drivers/scsi/qla4xxx/ql4_os.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * QLogic iSCSI HBA Driver
   4  * Copyright (c)  2003-2013 QLogic Corporation
   5  */
   6 #include <linux/moduleparam.h>
   7 #include <linux/slab.h>
   8 #include <linux/blkdev.h>
   9 #include <linux/iscsi_boot_sysfs.h>
  10 #include <linux/inet.h>
  11
  12 #include <scsi/scsi_tcq.h>
  13 #include <scsi/scsicam.h>
  14
  15 #include "ql4_def.h"
  16 #include "ql4_version.h"
  17 #include "ql4_glbl.h"
  18 #include "ql4_dbg.h"
  19 #include "ql4_inline.h"
  20 #include "ql4_83xx.h"
  21
  22 /*
  23  * Driver version
  24  */
  25 static char qla4xxx_version_str[40];
  26
  27 /*
  28  * SRB allocation cache
  29  */
  30 static struct kmem_cache *srb_cachep;
  31
  32 /*
  33  * Module parameter information and variables
  34  */
  35 static int ql4xdisablesysfsboot = 1;
  36 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
  37 MODULE_PARM_DESC(ql4xdisablesysfsboot,
  38                  " Set to disable exporting boot targets to sysfs.\n"
  39                  "\t\t  0 - Export boot targets\n"
  40                  "\t\t  1 - Do not export boot targets (Default)");
  41
  42 int ql4xdontresethba;
  43 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
  44 MODULE_PARM_DESC(ql4xdontresethba,
  45                  " Don't reset the HBA for driver recovery.\n"
  46                  "\t\t  0 - It will reset HBA (Default)\n"
  47                  "\t\t  1 - It will NOT reset HBA");
  48
  49 int ql4xextended_error_logging;
  50 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
  51 MODULE_PARM_DESC(ql4xextended_error_logging,
  52                  " Option to enable extended error logging.\n"
  53                  "\t\t  0 - no logging (Default)\n"
  54                  "\t\t  2 - debug logging");
  55
  56 int ql4xenablemsix = 1;
  57 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
  58 MODULE_PARM_DESC(ql4xenablemsix,
  59                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
  60                  "\t\t  0 = enable INTx interrupt mechanism.\n"
  61                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
  62                  "\t\t  2 = enable MSI interrupt mechanism.");
  63
  64 #define QL4_DEF_QDEPTH 32
  65 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
  66 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
  67 MODULE_PARM_DESC(ql4xmaxqdepth,
  68                  " Maximum queue depth to report for target devices.\n"
  69                  "\t\t  Default: 32.");
  70
  71 static int ql4xqfulltracking = 1;
  72 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
  73 MODULE_PARM_DESC(ql4xqfulltracking,
  74                  " Enable or disable dynamic tracking and adjustment of\n"
  75                  "\t\t scsi device queue depth.\n"
  76                  "\t\t  0 - Disable.\n"
  77                  "\t\t  1 - Enable. (Default)");
  78
  79 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
  80 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
  81 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
  82                 " Target Session Recovery Timeout.\n"
  83                 "\t\t  Default: 120 sec.");
  84
  85 int ql4xmdcapmask = 0;
  86 module_param(ql4xmdcapmask, int, S_IRUGO);
  87 MODULE_PARM_DESC(ql4xmdcapmask,
  88                  " Set the Minidump driver capture mask level.\n"
  89                  "\t\t  Default is 0 (firmware default capture mask)\n"
  90                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF");
  91
  92 int ql4xenablemd = 1;
  93 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
  94 MODULE_PARM_DESC(ql4xenablemd,
  95                  " Set to enable minidump.\n"
  96                  "\t\t  0 - disable minidump\n"
  97                  "\t\t  1 - enable minidump (Default)");
  98
  99 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
 100 /*
 101  * SCSI host template entry points
 102  */
 103 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
 104
 105 /*
 106  * iSCSI template entry points
 107  */
 108 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
 109                                      enum iscsi_param param, char *buf);
 110 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
 111                                   enum iscsi_param param, char *buf);
 112 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 113                                   enum iscsi_host_param param, char *buf);
 114 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
 115                                    uint32_t len);
 116 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 117                                    enum iscsi_param_type param_type,
 118                                    int param, char *buf);
 119 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
 120 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
 121                                                  struct sockaddr *dst_addr,
 122                                                  int non_blocking);
 123 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
 124 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
 125 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 126                                 enum iscsi_param param, char *buf);
 127 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
 128 static struct iscsi_cls_conn *
 129 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
 130 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 131                              struct iscsi_cls_conn *cls_conn,
 132                              uint64_t transport_fd, int is_leading);
 133 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
 134 static struct iscsi_cls_session *
 135 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 136                         uint16_t qdepth, uint32_t initial_cmdsn);
 137 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
 138 static void qla4xxx_task_work(struct work_struct *wdata);
 139 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
 140 static int qla4xxx_task_xmit(struct iscsi_task *);
 141 static void qla4xxx_task_cleanup(struct iscsi_task *);
 142 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
 143 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 144                                    struct iscsi_stats *stats);
 145 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 146                              uint32_t iface_type, uint32_t payload_size,
 147                              uint32_t pid, struct sockaddr *dst_addr);
 148 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 149                                  uint32_t *num_entries, char *buf);
 150 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
 151 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
 152                                   int len);
 153 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);
 154
 155 /*
 156  * SCSI host template entry points
 157  */
 158 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 159 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 160 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 161 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 162 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 163 static int qla4xxx_slave_alloc(struct scsi_device *device);
 164 static umode_t qla4_attr_is_visible(int param_type, int param);
 165 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 166
 167 /*
 168  * iSCSI Flash DDB sysfs entry points
 169  */
 170 static int
 171 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
 172                             struct iscsi_bus_flash_conn *fnode_conn,
 173                             void *data, int len);
 174 static int
 175 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 176                             int param, char *buf);
 177 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 178                                  int len);
 179 static int
 180 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
 181 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
 182                                    struct iscsi_bus_flash_conn *fnode_conn);
 183 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 184                                     struct iscsi_bus_flash_conn *fnode_conn);
 185 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 186
 187 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 188     QLA82XX_LEGACY_INTR_CONFIG;
 189
 190 static const uint32_t qla4_82xx_reg_tbl[] = {
 191         QLA82XX_PEG_HALT_STATUS1,
 192         QLA82XX_PEG_HALT_STATUS2,
 193         QLA82XX_PEG_ALIVE_COUNTER,
 194         QLA82XX_CRB_DRV_ACTIVE,
 195         QLA82XX_CRB_DEV_STATE,
 196         QLA82XX_CRB_DRV_STATE,
 197         QLA82XX_CRB_DRV_SCRATCH,
 198         QLA82XX_CRB_DEV_PART_INFO,
 199         QLA82XX_CRB_DRV_IDC_VERSION,
 200         QLA82XX_FW_VERSION_MAJOR,
 201         QLA82XX_FW_VERSION_MINOR,
 202         QLA82XX_FW_VERSION_SUB,
 203         CRB_CMDPEG_STATE,
 204         CRB_TEMP_STATE,
 205 };
 206
 207 static const uint32_t qla4_83xx_reg_tbl[] = {
 208         QLA83XX_PEG_HALT_STATUS1,
 209         QLA83XX_PEG_HALT_STATUS2,
 210         QLA83XX_PEG_ALIVE_COUNTER,
 211         QLA83XX_CRB_DRV_ACTIVE,
 212         QLA83XX_CRB_DEV_STATE,
 213         QLA83XX_CRB_DRV_STATE,
 214         QLA83XX_CRB_DRV_SCRATCH,
 215         QLA83XX_CRB_DEV_PART_INFO1,
 216         QLA83XX_CRB_IDC_VER_MAJOR,
 217         QLA83XX_FW_VER_MAJOR,
 218         QLA83XX_FW_VER_MINOR,
 219         QLA83XX_FW_VER_SUB,
 220         QLA83XX_CMDPEG_STATE,
 221         QLA83XX_ASIC_TEMP,
 222 };
 223
 224 static struct scsi_host_template qla4xxx_driver_template = {
 225         .module                 = THIS_MODULE,
 226         .name                   = DRIVER_NAME,
 227         .proc_name              = DRIVER_NAME,
 228         .queuecommand           = qla4xxx_queuecommand,
 229
 230         .eh_abort_handler       = qla4xxx_eh_abort,
 231         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 232         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 233         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 234         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 235
 236         .slave_alloc            = qla4xxx_slave_alloc,
 237         .change_queue_depth     = scsi_change_queue_depth,
 238
 239         .this_id                = -1,
 240         .cmd_per_lun            = 3,
 241         .sg_tablesize           = SG_ALL,
 242
 243         .max_sectors            = 0xFFFF,
 244         .shost_attrs            = qla4xxx_host_attrs,
 245         .host_reset             = qla4xxx_host_reset,
 246         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 247 };
 248
 249 static struct iscsi_transport qla4xxx_iscsi_transport = {
 250         .owner                  = THIS_MODULE,
 251         .name                   = DRIVER_NAME,
 252         .caps                   = CAP_TEXT_NEGO |
 253                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 254                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 255                                   CAP_MULTI_R2T,
 256         .attr_is_visible        = qla4_attr_is_visible,
 257         .create_session         = qla4xxx_session_create,
 258         .destroy_session        = qla4xxx_session_destroy,
 259         .start_conn             = qla4xxx_conn_start,
 260         .create_conn            = qla4xxx_conn_create,
 261         .bind_conn              = qla4xxx_conn_bind,
 262         .stop_conn              = iscsi_conn_stop,
 263         .destroy_conn           = qla4xxx_conn_destroy,
 264         .set_param              = iscsi_set_param,
 265         .get_conn_param         = qla4xxx_conn_get_param,
 266         .get_session_param      = qla4xxx_session_get_param,
 267         .get_ep_param           = qla4xxx_get_ep_param,
 268         .ep_connect             = qla4xxx_ep_connect,
 269         .ep_poll                = qla4xxx_ep_poll,
 270         .ep_disconnect          = qla4xxx_ep_disconnect,
 271         .get_stats              = qla4xxx_conn_get_stats,
 272         .send_pdu               = iscsi_conn_send_pdu,
 273         .xmit_task              = qla4xxx_task_xmit,
 274         .cleanup_task           = qla4xxx_task_cleanup,
 275         .alloc_pdu              = qla4xxx_alloc_pdu,
 276
 277         .get_host_param         = qla4xxx_host_get_param,
 278         .set_iface_param        = qla4xxx_iface_set_param,
 279         .get_iface_param        = qla4xxx_get_iface_param,
 280         .bsg_request            = qla4xxx_bsg_request,
 281         .send_ping              = qla4xxx_send_ping,
 282         .get_chap               = qla4xxx_get_chap_list,
 283         .delete_chap            = qla4xxx_delete_chap,
 284         .set_chap               = qla4xxx_set_chap_entry,
 285         .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
 286         .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
 287         .new_flashnode          = qla4xxx_sysfs_ddb_add,
 288         .del_flashnode          = qla4xxx_sysfs_ddb_delete,
 289         .login_flashnode        = qla4xxx_sysfs_ddb_login,
 290         .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
 291         .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
 292         .get_host_stats         = qla4xxx_get_host_stats,
 293 };
 294
 295 static struct scsi_transport_template *qla4xxx_scsi_transport;
 296
 297 static int qla4xxx_isp_check_reg(struct scsi_qla_host *ha)
 298 {
 299         u32 reg_val = 0;
 300         int rval = QLA_SUCCESS;
 301
 302         if (is_qla8022(ha))
 303                 reg_val = readl(&ha->qla4_82xx_reg->host_status);
 304         else if (is_qla8032(ha) || is_qla8042(ha))
 305                 reg_val = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_ALIVE_COUNTER);
 306         else
 307                 reg_val = readw(&ha->reg->ctrl_status);
 308
 309         if (reg_val == QL4_ISP_REG_DISCONNECT)
 310                 rval = QLA_ERROR;
 311
 312         return rval;
 313 }
 314
 315 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 316                              uint32_t iface_type, uint32_t payload_size,
 317                              uint32_t pid, struct sockaddr *dst_addr)
 318 {
 319         struct scsi_qla_host *ha = to_qla_host(shost);
 320         struct sockaddr_in *addr;
 321         struct sockaddr_in6 *addr6;
 322         uint32_t options = 0;
 323         uint8_t ipaddr[IPv6_ADDR_LEN];
 324         int rval;
 325
 326         memset(ipaddr, 0, IPv6_ADDR_LEN);
 327         /* IPv4 to IPv4 */
 328         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 329             (dst_addr->sa_family == AF_INET)) {
 330                 addr = (struct sockaddr_in *)dst_addr;
 331                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 332                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 333                                   "dest: %pI4\n", __func__,
 334                                   &ha->ip_config.ip_address, ipaddr));
 335                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 336                                          ipaddr);
 337                 if (rval)
 338                         rval = -EINVAL;
 339         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 340                    (dst_addr->sa_family == AF_INET6)) {
 341                 /* IPv6 to IPv6 */
 342                 addr6 = (struct sockaddr_in6 *)dst_addr;
 343                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 344
 345                 options |= PING_IPV6_PROTOCOL_ENABLE;
 346
 347                 /* Ping using LinkLocal address */
 348                 if ((iface_num == 0) || (iface_num == 1)) {
 349                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 350                                           "src: %pI6 dest: %pI6\n", __func__,
 351                                           &ha->ip_config.ipv6_link_local_addr,
 352                                           ipaddr));
 353                         options |= PING_IPV6_LINKLOCAL_ADDR;
 354                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 355                                                  pid, ipaddr);
 356                 } else {
 357                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 358                                    "not supported\n", __func__, iface_num);
 359                         rval = -ENOSYS;
 360                         goto exit_send_ping;
 361                 }
 362
 363                 /*
 364                  * If ping using LinkLocal address fails, try ping using
 365                  * IPv6 address
 366                  */
 367                 if (rval != QLA_SUCCESS) {
 368                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 369                         if (iface_num == 0) {
 370                                 options |= PING_IPV6_ADDR0;
 371                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 372                                                   "Ping src: %pI6 "
 373                                                   "dest: %pI6\n", __func__,
 374                                                   &ha->ip_config.ipv6_addr0,
 375                                                   ipaddr));
 376                         } else if (iface_num == 1) {
 377                                 options |= PING_IPV6_ADDR1;
 378                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 379                                                   "Ping src: %pI6 "
 380                                                   "dest: %pI6\n", __func__,
 381                                                   &ha->ip_config.ipv6_addr1,
 382                                                   ipaddr));
 383                         }
 384                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 385                                                  pid, ipaddr);
 386                         if (rval)
 387                                 rval = -EINVAL;
 388                 }
 389         } else
 390                 rval = -ENOSYS;
 391 exit_send_ping:
 392         return rval;
 393 }
 394
 395 static umode_t qla4_attr_is_visible(int param_type, int param)
 396 {
 397         switch (param_type) {
 398         case ISCSI_HOST_PARAM:
 399                 switch (param) {
 400                 case ISCSI_HOST_PARAM_HWADDRESS:
 401                 case ISCSI_HOST_PARAM_IPADDRESS:
 402                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 403                 case ISCSI_HOST_PARAM_PORT_STATE:
 404                 case ISCSI_HOST_PARAM_PORT_SPEED:
 405                         return S_IRUGO;
 406                 default:
 407                         return 0;
 408                 }
 409         case ISCSI_PARAM:
 410                 switch (param) {
 411                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 412                 case ISCSI_PARAM_PERSISTENT_PORT:
 413                 case ISCSI_PARAM_CONN_ADDRESS:
 414                 case ISCSI_PARAM_CONN_PORT:
 415                 case ISCSI_PARAM_TARGET_NAME:
 416                 case ISCSI_PARAM_TPGT:
 417                 case ISCSI_PARAM_TARGET_ALIAS:
 418                 case ISCSI_PARAM_MAX_BURST:
 419                 case ISCSI_PARAM_MAX_R2T:
 420                 case ISCSI_PARAM_FIRST_BURST:
 421                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 422                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 423                 case ISCSI_PARAM_IFACE_NAME:
 424                 case ISCSI_PARAM_CHAP_OUT_IDX:
 425                 case ISCSI_PARAM_CHAP_IN_IDX:
 426                 case ISCSI_PARAM_USERNAME:
 427                 case ISCSI_PARAM_PASSWORD:
 428                 case ISCSI_PARAM_USERNAME_IN:
 429                 case ISCSI_PARAM_PASSWORD_IN:
 430                 case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
 431                 case ISCSI_PARAM_DISCOVERY_SESS:
 432                 case ISCSI_PARAM_PORTAL_TYPE:
 433                 case ISCSI_PARAM_CHAP_AUTH_EN:
 434                 case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
 435                 case ISCSI_PARAM_BIDI_CHAP_EN:
 436                 case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
 437                 case ISCSI_PARAM_DEF_TIME2WAIT:
 438                 case ISCSI_PARAM_DEF_TIME2RETAIN:
 439                 case ISCSI_PARAM_HDRDGST_EN:
 440                 case ISCSI_PARAM_DATADGST_EN:
 441                 case ISCSI_PARAM_INITIAL_R2T_EN:
 442                 case ISCSI_PARAM_IMM_DATA_EN:
 443                 case ISCSI_PARAM_PDU_INORDER_EN:
 444                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
 445                 case ISCSI_PARAM_MAX_SEGMENT_SIZE:
 446                 case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
 447                 case ISCSI_PARAM_TCP_WSF_DISABLE:
 448                 case ISCSI_PARAM_TCP_NAGLE_DISABLE:
 449                 case ISCSI_PARAM_TCP_TIMER_SCALE:
 450                 case ISCSI_PARAM_TCP_TIMESTAMP_EN:
 451                 case ISCSI_PARAM_TCP_XMIT_WSF:
 452                 case ISCSI_PARAM_TCP_RECV_WSF:
 453                 case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
 454                 case ISCSI_PARAM_IPV4_TOS:
 455                 case ISCSI_PARAM_IPV6_TC:
 456                 case ISCSI_PARAM_IPV6_FLOW_LABEL:
 457                 case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
 458                 case ISCSI_PARAM_KEEPALIVE_TMO:
 459                 case ISCSI_PARAM_LOCAL_PORT:
 460                 case ISCSI_PARAM_ISID:
 461                 case ISCSI_PARAM_TSID:
 462                 case ISCSI_PARAM_DEF_TASKMGMT_TMO:
 463                 case ISCSI_PARAM_ERL:
 464                 case ISCSI_PARAM_STATSN:
 465                 case ISCSI_PARAM_EXP_STATSN:
 466                 case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
 467                 case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
 468                 case ISCSI_PARAM_LOCAL_IPADDR:
 469                         return S_IRUGO;
 470                 default:
 471                         return 0;
 472                 }
 473         case ISCSI_NET_PARAM:
 474                 switch (param) {
 475                 case ISCSI_NET_PARAM_IPV4_ADDR:
 476                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 477                 case ISCSI_NET_PARAM_IPV4_GW:
 478                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 479                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 480                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 481                 case ISCSI_NET_PARAM_IPV6_ADDR:
 482                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 483                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 484                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 485                 case ISCSI_NET_PARAM_VLAN_ID:
 486                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 487                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 488                 case ISCSI_NET_PARAM_MTU:
 489                 case ISCSI_NET_PARAM_PORT:
 490                 case ISCSI_NET_PARAM_IPADDR_STATE:
 491                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
 492                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
 493                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
 494                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
 495                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
 496                 case ISCSI_NET_PARAM_TCP_WSF:
 497                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
 498                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
 499                 case ISCSI_NET_PARAM_CACHE_ID:
 500                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
 501                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
 502                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
 503                 case ISCSI_NET_PARAM_IPV4_TOS:
 504                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
 505                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
 506                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
 507                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
 508                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
 509                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
 510                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
 511                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
 512                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
 513                 case ISCSI_NET_PARAM_REDIRECT_EN:
 514                 case ISCSI_NET_PARAM_IPV4_TTL:
 515                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
 516                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
 517                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
 518                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
 519                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
 520                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
 521                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
 522                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
 523                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
 524                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
 525                         return S_IRUGO;
 526                 default:
 527                         return 0;
 528                 }
 529         case ISCSI_IFACE_PARAM:
 530                 switch (param) {
 531                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
 532                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
 533                 case ISCSI_IFACE_PARAM_DATADGST_EN:
 534                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
 535                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
 536                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
 537                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
 538                 case ISCSI_IFACE_PARAM_ERL:
 539                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
 540                 case ISCSI_IFACE_PARAM_FIRST_BURST:
 541                 case ISCSI_IFACE_PARAM_MAX_R2T:
 542                 case ISCSI_IFACE_PARAM_MAX_BURST:
 543                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
 544                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
 545                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
 546                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
 547                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
 548                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
 549                         return S_IRUGO;
 550                 default:
 551                         return 0;
 552                 }
 553         case ISCSI_FLASHNODE_PARAM:
 554                 switch (param) {
 555                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
 556                 case ISCSI_FLASHNODE_PORTAL_TYPE:
 557                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
 558                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
 559                 case ISCSI_FLASHNODE_ENTRY_EN:
 560                 case ISCSI_FLASHNODE_HDR_DGST_EN:
 561                 case ISCSI_FLASHNODE_DATA_DGST_EN:
 562                 case ISCSI_FLASHNODE_IMM_DATA_EN:
 563                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
 564                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
 565                 case ISCSI_FLASHNODE_PDU_INORDER:
 566                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
 567                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
 568                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
 569                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
 570                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
 571                 case ISCSI_FLASHNODE_ERL:
 572                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
 573                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
 574                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
 575                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
 576                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
 577                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
 578                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
 579                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
 580                 case ISCSI_FLASHNODE_FIRST_BURST:
 581                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
 582                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
 583                 case ISCSI_FLASHNODE_MAX_R2T:
 584                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
 585                 case ISCSI_FLASHNODE_ISID:
 586                 case ISCSI_FLASHNODE_TSID:
 587                 case ISCSI_FLASHNODE_PORT:
 588                 case ISCSI_FLASHNODE_MAX_BURST:
 589                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
 590                 case ISCSI_FLASHNODE_IPADDR:
 591                 case ISCSI_FLASHNODE_ALIAS:
 592                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
 593                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
 594                 case ISCSI_FLASHNODE_LOCAL_PORT:
 595                 case ISCSI_FLASHNODE_IPV4_TOS:
 596                 case ISCSI_FLASHNODE_IPV6_TC:
 597                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
 598                 case ISCSI_FLASHNODE_NAME:
 599                 case ISCSI_FLASHNODE_TPGT:
 600                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
 601                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
 602                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
 603                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
 604                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
 605                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
 606                 case ISCSI_FLASHNODE_USERNAME:
 607                 case ISCSI_FLASHNODE_PASSWORD:
 608                 case ISCSI_FLASHNODE_STATSN:
 609                 case ISCSI_FLASHNODE_EXP_STATSN:
 610                 case ISCSI_FLASHNODE_IS_BOOT_TGT:
 611                         return S_IRUGO;
 612                 default:
 613                         return 0;
 614                 }
 615         }
 616
 617         return 0;
 618 }
 619
 620 /**
 621  * qla4xxx_create chap_list - Create CHAP list from FLASH
 622  * @ha: pointer to adapter structure
 623  *
 624  * Read flash and make a list of CHAP entries, during login when a CHAP entry
 625  * is received, it will be checked in this list. If entry exist then the CHAP
 626  * entry index is set in the DDB. If CHAP entry does not exist in this list
 627  * then a new entry is added in FLASH in CHAP table and the index obtained is
 628  * used in the DDB.
 629  **/
 630 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
 631 {
 632         int rval = 0;
 633         uint8_t *chap_flash_data = NULL;
 634         uint32_t offset;
 635         dma_addr_t chap_dma;
 636         uint32_t chap_size = 0;
 637
 638         if (is_qla40XX(ha))
 639                 chap_size = MAX_CHAP_ENTRIES_40XX *
 640                             sizeof(struct ql4_chap_table);
 641         else    /* Single region contains CHAP info for both
 642                  * ports which is divided into half for each port.
 643                  */
 644                 chap_size = ha->hw.flt_chap_size / 2;
 645
 646         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
 647                                              &chap_dma, GFP_KERNEL);
 648         if (!chap_flash_data) {
 649                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
 650                 return;
 651         }
 652
 653         if (is_qla40XX(ha)) {
 654                 offset = FLASH_CHAP_OFFSET;
 655         } else {
 656                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 657                 if (ha->port_num == 1)
 658                         offset += chap_size;
 659         }
 660
 661         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 662         if (rval != QLA_SUCCESS)
 663                 goto exit_chap_list;
 664
 665         if (ha->chap_list == NULL)
 666                 ha->chap_list = vmalloc(chap_size);
 667         if (ha->chap_list == NULL) {
 668                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
 669                 goto exit_chap_list;
 670         }
 671
 672         memset(ha->chap_list, 0, chap_size);
 673         memcpy(ha->chap_list, chap_flash_data, chap_size);
 674
 675 exit_chap_list:
 676         dma_free_coherent(&ha->pdev->dev, chap_size, chap_flash_data, chap_dma);
 677 }
 678
 679 static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
 680                                      int16_t chap_index,
 681                                      struct ql4_chap_table **chap_entry)
 682 {
 683         int rval = QLA_ERROR;
 684         int max_chap_entries;
 685
 686         if (!ha->chap_list) {
 687                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 688                 rval = QLA_ERROR;
 689                 goto exit_get_chap;
 690         }
 691
 692         if (is_qla80XX(ha))
 693                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 694                                    sizeof(struct ql4_chap_table);
 695         else
 696                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 697
 698         if (chap_index > max_chap_entries) {
 699                 ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
 700                 rval = QLA_ERROR;
 701                 goto exit_get_chap;
 702         }
 703
 704         *chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
 705         if ((*chap_entry)->cookie !=
 706              __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
 707                 rval = QLA_ERROR;
 708                 *chap_entry = NULL;
 709         } else {
 710                 rval = QLA_SUCCESS;
 711         }
 712
 713 exit_get_chap:
 714         return rval;
 715 }
 716
 717 /**
 718  * qla4xxx_find_free_chap_index - Find the first free chap index
 719  * @ha: pointer to adapter structure
 720  * @chap_index: CHAP index to be returned
 721  *
 722  * Find the first free chap index available in the chap table
 723  *
 724  * Note: Caller should acquire the chap lock before getting here.
 725  **/
 726 static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
 727                                         uint16_t *chap_index)
 728 {
 729         int i, rval;
 730         int free_index = -1;
 731         int max_chap_entries = 0;
 732         struct ql4_chap_table *chap_table;
 733
 734         if (is_qla80XX(ha))
 735                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 736                                                 sizeof(struct ql4_chap_table);
 737         else
 738                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 739
 740         if (!ha->chap_list) {
 741                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 742                 rval = QLA_ERROR;
 743                 goto exit_find_chap;
 744         }
 745
 746         for (i = 0; i < max_chap_entries; i++) {
 747                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 748
 749                 if ((chap_table->cookie !=
 750                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
 751                    (i > MAX_RESRV_CHAP_IDX)) {
 752                                 free_index = i;
 753                                 break;
 754                 }
 755         }
 756
 757         if (free_index != -1) {
 758                 *chap_index = free_index;
 759                 rval = QLA_SUCCESS;
 760         } else {
 761                 rval = QLA_ERROR;
 762         }
 763
 764 exit_find_chap:
 765         return rval;
 766 }
 767
 768 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 769                                   uint32_t *num_entries, char *buf)
 770 {
 771         struct scsi_qla_host *ha = to_qla_host(shost);
 772         struct ql4_chap_table *chap_table;
 773         struct iscsi_chap_rec *chap_rec;
 774         int max_chap_entries = 0;
 775         int valid_chap_entries = 0;
 776         int ret = 0, i;
 777
 778         if (is_qla80XX(ha))
 779                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 780                                         sizeof(struct ql4_chap_table);
 781         else
 782                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 783
 784         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 785                         __func__, *num_entries, chap_tbl_idx);
 786
 787         if (!buf) {
 788                 ret = -ENOMEM;
 789                 goto exit_get_chap_list;
 790         }
 791
 792         qla4xxx_create_chap_list(ha);
 793
 794         chap_rec = (struct iscsi_chap_rec *) buf;
 795         mutex_lock(&ha->chap_sem);
 796         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 797                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 798                 if (chap_table->cookie !=
 799                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 800                         continue;
 801
 802                 chap_rec->chap_tbl_idx = i;
 803                 strlcpy(chap_rec->username, chap_table->name,
 804                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 805                 strlcpy(chap_rec->password, chap_table->secret,
 806                         QL4_CHAP_MAX_SECRET_LEN);
 807                 chap_rec->password_length = chap_table->secret_len;
 808
 809                 if (chap_table->flags & BIT_7) /* local */
 810                         chap_rec->chap_type = CHAP_TYPE_OUT;
 811
 812                 if (chap_table->flags & BIT_6) /* peer */
 813                         chap_rec->chap_type = CHAP_TYPE_IN;
 814
 815                 chap_rec++;
 816
 817                 valid_chap_entries++;
 818                 if (valid_chap_entries == *num_entries)
 819                         break;
 820                 else
 821                         continue;
 822         }
 823         mutex_unlock(&ha->chap_sem);
 824
 825 exit_get_chap_list:
 826         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 827                         __func__,  valid_chap_entries);
 828         *num_entries = valid_chap_entries;
 829         return ret;
 830 }
 831
 832 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 833 {
 834         int ret = 0;
 835         uint16_t *chap_tbl_idx = (uint16_t *) data;
 836         struct iscsi_cls_session *cls_session;
 837         struct iscsi_session *sess;
 838         struct ddb_entry *ddb_entry;
 839
 840         if (!iscsi_is_session_dev(dev))
 841                 goto exit_is_chap_active;
 842
 843         cls_session = iscsi_dev_to_session(dev);
 844         sess = cls_session->dd_data;
 845         ddb_entry = sess->dd_data;
 846
 847         if (iscsi_session_chkready(cls_session))
 848                 goto exit_is_chap_active;
 849
 850         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 851                 ret = 1;
 852
 853 exit_is_chap_active:
 854         return ret;
 855 }
 856
 857 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 858                                   uint16_t chap_tbl_idx)
 859 {
 860         int ret = 0;
 861
 862         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 863                                     __qla4xxx_is_chap_active);
 864
 865         return ret;
 866 }
 867
 868 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 869 {
 870         struct scsi_qla_host *ha = to_qla_host(shost);
 871         struct ql4_chap_table *chap_table;
 872         dma_addr_t chap_dma;
 873         int max_chap_entries = 0;
 874         uint32_t offset = 0;
 875         uint32_t chap_size;
 876         int ret = 0;
 877
 878         chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 879         if (chap_table == NULL)
 880                 return -ENOMEM;
 881
 882         if (is_qla80XX(ha))
 883                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 884                                    sizeof(struct ql4_chap_table);
 885         else
 886                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 887
 888         if (chap_tbl_idx > max_chap_entries) {
 889                 ret = -EINVAL;
 890                 goto exit_delete_chap;
 891         }
 892
 893         /* Check if chap index is in use.
 894          * If chap is in use don't delet chap entry */
 895         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 896         if (ret) {
 897                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 898                            "delete from flash\n", chap_tbl_idx);
 899                 ret = -EBUSY;
 900                 goto exit_delete_chap;
 901         }
 902
 903         chap_size = sizeof(struct ql4_chap_table);
 904         if (is_qla40XX(ha))
 905                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 906         else {
 907                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 908                 /* flt_chap_size is CHAP table size for both ports
 909                  * so divide it by 2 to calculate the offset for second port
 910                  */
 911                 if (ha->port_num == 1)
 912                         offset += (ha->hw.flt_chap_size / 2);
 913                 offset += (chap_tbl_idx * chap_size);
 914         }
 915
 916         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 917         if (ret != QLA_SUCCESS) {
 918                 ret = -EINVAL;
 919                 goto exit_delete_chap;
 920         }
 921
 922         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 923                           __le16_to_cpu(chap_table->cookie)));
 924
 925         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 926                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 927                 goto exit_delete_chap;
 928         }
 929
 930         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 931
 932         offset = FLASH_CHAP_OFFSET |
 933                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 934         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 935                                 FLASH_OPT_RMW_COMMIT);
 936         if (ret == QLA_SUCCESS && ha->chap_list) {
 937                 mutex_lock(&ha->chap_sem);
 938                 /* Update ha chap_list cache */
 939                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 940                         chap_table, sizeof(struct ql4_chap_table));
 941                 mutex_unlock(&ha->chap_sem);
 942         }
 943         if (ret != QLA_SUCCESS)
 944                 ret =  -EINVAL;
 945
 946 exit_delete_chap:
 947         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 948         return ret;
 949 }
 950
 951 /**
 952  * qla4xxx_set_chap_entry - Make chap entry with given information
 953  * @shost: pointer to host
 954  * @data: chap info - credentials, index and type to make chap entry
 955  * @len: length of data
 956  *
 957  * Add or update chap entry with the given information
 958  **/
 959 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
 960 {
 961         struct scsi_qla_host *ha = to_qla_host(shost);
 962         struct iscsi_chap_rec chap_rec;
 963         struct ql4_chap_table *chap_entry = NULL;
 964         struct iscsi_param_info *param_info;
 965         struct nlattr *attr;
 966         int max_chap_entries = 0;
 967         int type;
 968         int rem = len;
 969         int rc = 0;
 970         int size;
 971
 972         memset(&chap_rec, 0, sizeof(chap_rec));
 973
 974         nla_for_each_attr(attr, data, len, rem) {
 975                 param_info = nla_data(attr);
 976
 977                 switch (param_info->param) {
 978                 case ISCSI_CHAP_PARAM_INDEX:
 979                         chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
 980                         break;
 981                 case ISCSI_CHAP_PARAM_CHAP_TYPE:
 982                         chap_rec.chap_type = param_info->value[0];
 983                         break;
 984                 case ISCSI_CHAP_PARAM_USERNAME:
 985                         size = min_t(size_t, sizeof(chap_rec.username),
 986                                      param_info->len);
 987                         memcpy(chap_rec.username, param_info->value, size);
 988                         break;
 989                 case ISCSI_CHAP_PARAM_PASSWORD:
 990                         size = min_t(size_t, sizeof(chap_rec.password),
 991                                      param_info->len);
 992                         memcpy(chap_rec.password, param_info->value, size);
 993                         break;
 994                 case ISCSI_CHAP_PARAM_PASSWORD_LEN:
 995                         chap_rec.password_length = param_info->value[0];
 996                         break;
 997                 default:
 998                         ql4_printk(KERN_ERR, ha,
 999                                    "%s: No such sysfs attribute\n", __func__);
1000                         rc = -ENOSYS;
1001                         goto exit_set_chap;
1002                 }
1003         }
1004
1005         if (chap_rec.chap_type == CHAP_TYPE_IN)
1006                 type = BIDI_CHAP;
1007         else
1008                 type = LOCAL_CHAP;
1009
1010         if (is_qla80XX(ha))
1011                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
1012                                    sizeof(struct ql4_chap_table);
1013         else
1014                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1015
1016         mutex_lock(&ha->chap_sem);
1017         if (chap_rec.chap_tbl_idx < max_chap_entries) {
1018                 rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
1019                                                &chap_entry);
1020                 if (!rc) {
1021                         if (!(type == qla4xxx_get_chap_type(chap_entry))) {
1022                                 ql4_printk(KERN_INFO, ha,
1023                                            "Type mismatch for CHAP entry %d\n",
1024                                            chap_rec.chap_tbl_idx);
1025                                 rc = -EINVAL;
1026                                 goto exit_unlock_chap;
1027                         }
1028
1029                         /* If chap index is in use then don't modify it */
1030                         rc = qla4xxx_is_chap_active(shost,
1031                                                     chap_rec.chap_tbl_idx);
1032                         if (rc) {
1033                                 ql4_printk(KERN_INFO, ha,
1034                                            "CHAP entry %d is in use\n",
1035                                            chap_rec.chap_tbl_idx);
1036                                 rc = -EBUSY;
1037                                 goto exit_unlock_chap;
1038                         }
1039                 }
1040         } else {
1041                 rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
1042                 if (rc) {
1043                         ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
1044                         rc = -EBUSY;
1045                         goto exit_unlock_chap;
1046                 }
1047         }
1048
1049         rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
1050                               chap_rec.chap_tbl_idx, type);
1051
1052 exit_unlock_chap:
1053         mutex_unlock(&ha->chap_sem);
1054
1055 exit_set_chap:
1056         return rc;
1057 }
1058
1059
1060 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
1061 {
1062         struct scsi_qla_host *ha = to_qla_host(shost);
1063         struct iscsi_offload_host_stats *host_stats = NULL;
1064         int host_stats_size;
1065         int ret = 0;
1066         int ddb_idx = 0;
1067         struct ql_iscsi_stats *ql_iscsi_stats = NULL;
1068         int stats_size;
1069         dma_addr_t iscsi_stats_dma;
1070
1071         DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));
1072
1073         host_stats_size = sizeof(struct iscsi_offload_host_stats);
1074
1075         if (host_stats_size != len) {
1076                 ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
1077                            __func__, len, host_stats_size);
1078                 ret = -EINVAL;
1079                 goto exit_host_stats;
1080         }
1081         host_stats = (struct iscsi_offload_host_stats *)buf;
1082
1083         if (!buf) {
1084                 ret = -ENOMEM;
1085                 goto exit_host_stats;
1086         }
1087
1088         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1089
1090         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1091                                             &iscsi_stats_dma, GFP_KERNEL);
1092         if (!ql_iscsi_stats) {
1093                 ql4_printk(KERN_ERR, ha,
1094                            "Unable to allocate memory for iscsi stats\n");
1095                 ret = -ENOMEM;
1096                 goto exit_host_stats;
1097         }
1098
1099         ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
1100                                      iscsi_stats_dma);
1101         if (ret != QLA_SUCCESS) {
1102                 ql4_printk(KERN_ERR, ha,
1103                            "Unable to retrieve iscsi stats\n");
1104                 ret = -EIO;
1105                 goto exit_host_stats;
1106         }
1107         host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
1108         host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
1109         host_stats->mactx_multicast_frames =
1110                         le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
1111         host_stats->mactx_broadcast_frames =
1112                         le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
1113         host_stats->mactx_pause_frames =
1114                         le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
1115         host_stats->mactx_control_frames =
1116                         le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
1117         host_stats->mactx_deferral =
1118                         le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
1119         host_stats->mactx_excess_deferral =
1120                         le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
1121         host_stats->mactx_late_collision =
1122                         le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
1123         host_stats->mactx_abort = le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
1124         host_stats->mactx_single_collision =
1125                         le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
1126         host_stats->mactx_multiple_collision =
1127                         le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
1128         host_stats->mactx_collision =
1129                         le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
1130         host_stats->mactx_frames_dropped =
1131                         le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
1132         host_stats->mactx_jumbo_frames =
1133                         le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
1134         host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
1135         host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
1136         host_stats->macrx_unknown_control_frames =
1137                 le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
1138         host_stats->macrx_pause_frames =
1139                         le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
1140         host_stats->macrx_control_frames =
1141                         le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
1142         host_stats->macrx_dribble =
1143                         le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
1144         host_stats->macrx_frame_length_error =
1145                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
1146         host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
1147         host_stats->macrx_carrier_sense_error =
1148                 le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
1149         host_stats->macrx_frame_discarded =
1150                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
1151         host_stats->macrx_frames_dropped =
1152                         le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
1153         host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
1154         host_stats->mac_encoding_error =
1155                         le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
1156         host_stats->macrx_length_error_large =
1157                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
1158         host_stats->macrx_length_error_small =
1159                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
1160         host_stats->macrx_multicast_frames =
1161                         le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
1162         host_stats->macrx_broadcast_frames =
1163                         le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
1164         host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
1165         host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
1166         host_stats->iptx_fragments =
1167                         le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
1168         host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
1169         host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
1170         host_stats->iprx_fragments =
1171                         le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
1172         host_stats->ip_datagram_reassembly =
1173                         le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
1174         host_stats->ip_invalid_address_error =
1175                         le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
1176         host_stats->ip_error_packets =
1177                         le64_to_cpu(ql_iscsi_stats->ip_error_packets);
1178         host_stats->ip_fragrx_overlap =
1179                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
1180         host_stats->ip_fragrx_outoforder =
1181                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
1182         host_stats->ip_datagram_reassembly_timeout =
1183                 le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
1184         host_stats->ipv6tx_packets =
1185                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
1186         host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
1187         host_stats->ipv6tx_fragments =
1188                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
1189         host_stats->ipv6rx_packets =
1190                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
1191         host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
1192         host_stats->ipv6rx_fragments =
1193                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
1194         host_stats->ipv6_datagram_reassembly =
1195                         le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
1196         host_stats->ipv6_invalid_address_error =
1197                 le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
1198         host_stats->ipv6_error_packets =
1199                         le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
1200         host_stats->ipv6_fragrx_overlap =
1201                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
1202         host_stats->ipv6_fragrx_outoforder =
1203                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
1204         host_stats->ipv6_datagram_reassembly_timeout =
1205                 le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
1206         host_stats->tcptx_segments =
1207                         le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
1208         host_stats->tcptx_bytes = le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
1209         host_stats->tcprx_segments =
1210                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
1211         host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
1212         host_stats->tcp_duplicate_ack_retx =
1213                         le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
1214         host_stats->tcp_retx_timer_expired =
1215                         le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
1216         host_stats->tcprx_duplicate_ack =
1217                         le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
1218         host_stats->tcprx_pure_ackr =
1219                         le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
1220         host_stats->tcptx_delayed_ack =
1221                         le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
1222         host_stats->tcptx_pure_ack =
1223                         le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
1224         host_stats->tcprx_segment_error =
1225                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
1226         host_stats->tcprx_segment_outoforder =
1227                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
1228         host_stats->tcprx_window_probe =
1229                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
1230         host_stats->tcprx_window_update =
1231                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
1232         host_stats->tcptx_window_probe_persist =
1233                 le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
1234         host_stats->ecc_error_correction =
1235                         le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
1236         host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
1237         host_stats->iscsi_data_bytes_tx =
1238                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
1239         host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
1240         host_stats->iscsi_data_bytes_rx =
1241                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
1242         host_stats->iscsi_io_completed =
1243                         le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
1244         host_stats->iscsi_unexpected_io_rx =
1245                         le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
1246         host_stats->iscsi_format_error =
1247                         le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
1248         host_stats->iscsi_hdr_digest_error =
1249                         le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
1250         host_stats->iscsi_data_digest_error =
1251                         le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
1252         host_stats->iscsi_sequence_error =
1253                         le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
1254 exit_host_stats:
1255         if (ql_iscsi_stats)
1256                 dma_free_coherent(&ha->pdev->dev, host_stats_size,
1257                                   ql_iscsi_stats, iscsi_stats_dma);
1258
1259         ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
1260                    __func__);
1261         return ret;
1262 }
1263
1264 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
1265                                    enum iscsi_param_type param_type,
1266                                    int param, char *buf)
1267 {
1268         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
1269         struct scsi_qla_host *ha = to_qla_host(shost);
1270         int ival;
1271         char *pval = NULL;
1272         int len = -ENOSYS;
1273
1274         if (param_type == ISCSI_NET_PARAM) {
1275                 switch (param) {
1276                 case ISCSI_NET_PARAM_IPV4_ADDR:
1277                         len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1278                         break;
1279                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1280                         len = sprintf(buf, "%pI4\n",
1281                                       &ha->ip_config.subnet_mask);
1282                         break;
1283                 case ISCSI_NET_PARAM_IPV4_GW:
1284                         len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
1285                         break;
1286                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1287                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1288                                 OP_STATE(ha->ip_config.ipv4_options,
1289                                          IPOPT_IPV4_PROTOCOL_ENABLE, pval);
1290                         } else {
1291                                 OP_STATE(ha->ip_config.ipv6_options,
1292                                          IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
1293                         }
1294
1295                         len = sprintf(buf, "%s\n", pval);
1296                         break;
1297                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1298                         len = sprintf(buf, "%s\n",
1299                                       (ha->ip_config.tcp_options &
1300                                        TCPOPT_DHCP_ENABLE) ?
1301                                       "dhcp" : "static");
1302                         break;
1303                 case ISCSI_NET_PARAM_IPV6_ADDR:
1304                         if (iface->iface_num == 0)
1305                                 len = sprintf(buf, "%pI6\n",
1306                                               &ha->ip_config.ipv6_addr0);
1307                         if (iface->iface_num == 1)
1308                                 len = sprintf(buf, "%pI6\n",
1309                                               &ha->ip_config.ipv6_addr1);
1310                         break;
1311                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1312                         len = sprintf(buf, "%pI6\n",
1313                                       &ha->ip_config.ipv6_link_local_addr);
1314                         break;
1315                 case ISCSI_NET_PARAM_IPV6_ROUTER:
1316                         len = sprintf(buf, "%pI6\n",
1317                                       &ha->ip_config.ipv6_default_router_addr);
1318                         break;
1319                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1320                         pval = (ha->ip_config.ipv6_addl_options &
1321                                 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
1322                                 "nd" : "static";
1323
1324                         len = sprintf(buf, "%s\n", pval);
1325                         break;
1326                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1327                         pval = (ha->ip_config.ipv6_addl_options &
1328                                 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
1329                                 "auto" : "static";
1330
1331                         len = sprintf(buf, "%s\n", pval);
1332                         break;
1333                 case ISCSI_NET_PARAM_VLAN_ID:
1334                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1335                                 ival = ha->ip_config.ipv4_vlan_tag &
1336                                        ISCSI_MAX_VLAN_ID;
1337                         else
1338                                 ival = ha->ip_config.ipv6_vlan_tag &
1339                                        ISCSI_MAX_VLAN_ID;
1340
1341                         len = sprintf(buf, "%d\n", ival);
1342                         break;
1343                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1344                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1345                                 ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
1346                                        ISCSI_MAX_VLAN_PRIORITY;
1347                         else
1348                                 ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
1349                                        ISCSI_MAX_VLAN_PRIORITY;
1350
1351                         len = sprintf(buf, "%d\n", ival);
1352                         break;
1353                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1354                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1355                                 OP_STATE(ha->ip_config.ipv4_options,
1356                                          IPOPT_VLAN_TAGGING_ENABLE, pval);
1357                         } else {
1358                                 OP_STATE(ha->ip_config.ipv6_options,
1359                                          IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
1360                         }
1361                         len = sprintf(buf, "%s\n", pval);
1362                         break;
1363                 case ISCSI_NET_PARAM_MTU:
1364                         len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
1365                         break;
1366                 case ISCSI_NET_PARAM_PORT:
1367                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1368                                 len = sprintf(buf, "%d\n",
1369                                               ha->ip_config.ipv4_port);
1370                         else
1371                                 len = sprintf(buf, "%d\n",
1372                                               ha->ip_config.ipv6_port);
1373                         break;
1374                 case ISCSI_NET_PARAM_IPADDR_STATE:
1375                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1376                                 pval = iscsi_get_ipaddress_state_name(
1377                                                 ha->ip_config.ipv4_addr_state);
1378                         } else {
1379                                 if (iface->iface_num == 0)
1380                                         pval = iscsi_get_ipaddress_state_name(
1381                                                 ha->ip_config.ipv6_addr0_state);
1382                                 else if (iface->iface_num == 1)
1383                                         pval = iscsi_get_ipaddress_state_name(
1384                                                 ha->ip_config.ipv6_addr1_state);
1385                         }
1386
1387                         len = sprintf(buf, "%s\n", pval);
1388                         break;
1389                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
1390                         pval = iscsi_get_ipaddress_state_name(
1391                                         ha->ip_config.ipv6_link_local_state);
1392                         len = sprintf(buf, "%s\n", pval);
1393                         break;
1394                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
1395                         pval = iscsi_get_router_state_name(
1396                                       ha->ip_config.ipv6_default_router_state);
1397                         len = sprintf(buf, "%s\n", pval);
1398                         break;
1399                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
1400                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1401                                 OP_STATE(~ha->ip_config.tcp_options,
1402                                          TCPOPT_DELAYED_ACK_DISABLE, pval);
1403                         } else {
1404                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1405                                          IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
1406                         }
1407                         len = sprintf(buf, "%s\n", pval);
1408                         break;
1409                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
1410                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1411                                 OP_STATE(~ha->ip_config.tcp_options,
1412                                          TCPOPT_NAGLE_ALGO_DISABLE, pval);
1413                         } else {
1414                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1415                                          IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
1416                         }
1417                         len = sprintf(buf, "%s\n", pval);
1418                         break;
1419                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
1420                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1421                                 OP_STATE(~ha->ip_config.tcp_options,
1422                                          TCPOPT_WINDOW_SCALE_DISABLE, pval);
1423                         } else {
1424                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1425                                          IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
1426                                          pval);
1427                         }
1428                         len = sprintf(buf, "%s\n", pval);
1429                         break;
1430                 case ISCSI_NET_PARAM_TCP_WSF:
1431                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1432                                 len = sprintf(buf, "%d\n",
1433                                               ha->ip_config.tcp_wsf);
1434                         else
1435                                 len = sprintf(buf, "%d\n",
1436                                               ha->ip_config.ipv6_tcp_wsf);
1437                         break;
1438                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
1439                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1440                                 ival = (ha->ip_config.tcp_options &
1441                                         TCPOPT_TIMER_SCALE) >> 1;
1442                         else
1443                                 ival = (ha->ip_config.ipv6_tcp_options &
1444                                         IPV6_TCPOPT_TIMER_SCALE) >> 1;
1445
1446                         len = sprintf(buf, "%d\n", ival);
1447                         break;
1448                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
1449                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1450                                 OP_STATE(ha->ip_config.tcp_options,
1451                                          TCPOPT_TIMESTAMP_ENABLE, pval);
1452                         } else {
1453                                 OP_STATE(ha->ip_config.ipv6_tcp_options,
1454                                          IPV6_TCPOPT_TIMESTAMP_EN, pval);
1455                         }
1456                         len = sprintf(buf, "%s\n", pval);
1457                         break;
1458                 case ISCSI_NET_PARAM_CACHE_ID:
1459                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1460                                 len = sprintf(buf, "%d\n",
1461                                               ha->ip_config.ipv4_cache_id);
1462                         else
1463                                 len = sprintf(buf, "%d\n",
1464                                               ha->ip_config.ipv6_cache_id);
1465                         break;
1466                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
1467                         OP_STATE(ha->ip_config.tcp_options,
1468                                  TCPOPT_DNS_SERVER_IP_EN, pval);
1469
1470                         len = sprintf(buf, "%s\n", pval);
1471                         break;
1472                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
1473                         OP_STATE(ha->ip_config.tcp_options,
1474                                  TCPOPT_SLP_DA_INFO_EN, pval);
1475
1476                         len = sprintf(buf, "%s\n", pval);
1477                         break;
1478                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
1479                         OP_STATE(ha->ip_config.ipv4_options,
1480                                  IPOPT_IPV4_TOS_EN, pval);
1481
1482                         len = sprintf(buf, "%s\n", pval);
1483                         break;
1484                 case ISCSI_NET_PARAM_IPV4_TOS:
1485                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
1486                         break;
1487                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
1488                         OP_STATE(ha->ip_config.ipv4_options,
1489                                  IPOPT_GRAT_ARP_EN, pval);
1490
1491                         len = sprintf(buf, "%s\n", pval);
1492                         break;
1493                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
1494                         OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
1495                                  pval);
1496
1497                         len = sprintf(buf, "%s\n", pval);
1498                         break;
1499                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
1500                         pval = (ha->ip_config.ipv4_alt_cid_len) ?
1501                                (char *)ha->ip_config.ipv4_alt_cid : "";
1502
1503                         len = sprintf(buf, "%s\n", pval);
1504                         break;
1505                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
1506                         OP_STATE(ha->ip_config.ipv4_options,
1507                                  IPOPT_REQ_VID_EN, pval);
1508
1509                         len = sprintf(buf, "%s\n", pval);
1510                         break;
1511                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
1512                         OP_STATE(ha->ip_config.ipv4_options,
1513                                  IPOPT_USE_VID_EN, pval);
1514
1515                         len = sprintf(buf, "%s\n", pval);
1516                         break;
1517                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
1518                         pval = (ha->ip_config.ipv4_vid_len) ?
1519                                (char *)ha->ip_config.ipv4_vid : "";
1520
1521                         len = sprintf(buf, "%s\n", pval);
1522                         break;
1523                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
1524                         OP_STATE(ha->ip_config.ipv4_options,
1525                                  IPOPT_LEARN_IQN_EN, pval);
1526
1527                         len = sprintf(buf, "%s\n", pval);
1528                         break;
1529                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
1530                         OP_STATE(~ha->ip_config.ipv4_options,
1531                                  IPOPT_FRAGMENTATION_DISABLE, pval);
1532
1533                         len = sprintf(buf, "%s\n", pval);
1534                         break;
1535                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
1536                         OP_STATE(ha->ip_config.ipv4_options,
1537                                  IPOPT_IN_FORWARD_EN, pval);
1538
1539                         len = sprintf(buf, "%s\n", pval);
1540                         break;
1541                 case ISCSI_NET_PARAM_REDIRECT_EN:
1542                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1543                                 OP_STATE(ha->ip_config.ipv4_options,
1544                                          IPOPT_ARP_REDIRECT_EN, pval);
1545                         } else {
1546                                 OP_STATE(ha->ip_config.ipv6_options,
1547                                          IPV6_OPT_REDIRECT_EN, pval);
1548                         }
1549                         len = sprintf(buf, "%s\n", pval);
1550                         break;
1551                 case ISCSI_NET_PARAM_IPV4_TTL:
1552                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
1553                         break;
1554                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
1555                         OP_STATE(ha->ip_config.ipv6_options,
1556                                  IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);
1557
1558                         len = sprintf(buf, "%s\n", pval);
1559                         break;
1560                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
1561                         OP_STATE(ha->ip_config.ipv6_addl_options,
1562                                  IPV6_ADDOPT_MLD_EN, pval);
1563
1564                         len = sprintf(buf, "%s\n", pval);
1565                         break;
1566                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
1567                         len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
1568                         break;
1569                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
1570                         len = sprintf(buf, "%d\n",
1571                                       ha->ip_config.ipv6_traffic_class);
1572                         break;
1573                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
1574                         len = sprintf(buf, "%d\n",
1575                                       ha->ip_config.ipv6_hop_limit);
1576                         break;
1577                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
1578                         len = sprintf(buf, "%d\n",
1579                                       ha->ip_config.ipv6_nd_reach_time);
1580                         break;
1581                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
1582                         len = sprintf(buf, "%d\n",
1583                                       ha->ip_config.ipv6_nd_rexmit_timer);
1584                         break;
1585                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
1586                         len = sprintf(buf, "%d\n",
1587                                       ha->ip_config.ipv6_nd_stale_timeout);
1588                         break;
1589                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
1590                         len = sprintf(buf, "%d\n",
1591                                       ha->ip_config.ipv6_dup_addr_detect_count);
1592                         break;
1593                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
1594                         len = sprintf(buf, "%d\n",
1595                                       ha->ip_config.ipv6_gw_advrt_mtu);
1596                         break;
1597                 default:
1598                         len = -ENOSYS;
1599                 }
1600         } else if (param_type == ISCSI_IFACE_PARAM) {
1601                 switch (param) {
1602                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
1603                         len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
1604                         break;
1605                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
1606                         OP_STATE(ha->ip_config.iscsi_options,
1607                                  ISCSIOPTS_HEADER_DIGEST_EN, pval);
1608
1609                         len = sprintf(buf, "%s\n", pval);
1610                         break;
1611                 case ISCSI_IFACE_PARAM_DATADGST_EN:
1612                         OP_STATE(ha->ip_config.iscsi_options,
1613                                  ISCSIOPTS_DATA_DIGEST_EN, pval);
1614
1615                         len = sprintf(buf, "%s\n", pval);
1616                         break;
1617                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
1618                         OP_STATE(ha->ip_config.iscsi_options,
1619                                  ISCSIOPTS_IMMEDIATE_DATA_EN, pval);
1620
1621                         len = sprintf(buf, "%s\n", pval);
1622                         break;
1623                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
1624                         OP_STATE(ha->ip_config.iscsi_options,
1625                                  ISCSIOPTS_INITIAL_R2T_EN, pval);
1626
1627                         len = sprintf(buf, "%s\n", pval);
1628                         break;
1629                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
1630                         OP_STATE(ha->ip_config.iscsi_options,
1631                                  ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);
1632
1633                         len = sprintf(buf, "%s\n", pval);
1634                         break;
1635                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
1636                         OP_STATE(ha->ip_config.iscsi_options,
1637                                  ISCSIOPTS_DATA_PDU_INORDER_EN, pval);
1638
1639                         len = sprintf(buf, "%s\n", pval);
1640                         break;
1641                 case ISCSI_IFACE_PARAM_ERL:
1642                         len = sprintf(buf, "%d\n",
1643                                       (ha->ip_config.iscsi_options &
1644                                        ISCSIOPTS_ERL));
1645                         break;
1646                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
1647                         len = sprintf(buf, "%u\n",
1648                                       ha->ip_config.iscsi_max_pdu_size *
1649                                       BYTE_UNITS);
1650                         break;
1651                 case ISCSI_IFACE_PARAM_FIRST_BURST:
1652                         len = sprintf(buf, "%u\n",
1653                                       ha->ip_config.iscsi_first_burst_len *
1654                                       BYTE_UNITS);
1655                         break;
1656                 case ISCSI_IFACE_PARAM_MAX_R2T:
1657                         len = sprintf(buf, "%d\n",
1658                                       ha->ip_config.iscsi_max_outstnd_r2t);
1659                         break;
1660                 case ISCSI_IFACE_PARAM_MAX_BURST:
1661                         len = sprintf(buf, "%u\n",
1662                                       ha->ip_config.iscsi_max_burst_len *
1663                                       BYTE_UNITS);
1664                         break;
1665                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
1666                         OP_STATE(ha->ip_config.iscsi_options,
1667                                  ISCSIOPTS_CHAP_AUTH_EN, pval);
1668
1669                         len = sprintf(buf, "%s\n", pval);
1670                         break;
1671                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
1672                         OP_STATE(ha->ip_config.iscsi_options,
1673                                  ISCSIOPTS_BIDI_CHAP_EN, pval);
1674
1675                         len = sprintf(buf, "%s\n", pval);
1676                         break;
1677                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
1678                         OP_STATE(ha->ip_config.iscsi_options,
1679                                  ISCSIOPTS_DISCOVERY_AUTH_EN, pval);
1680
1681                         len = sprintf(buf, "%s\n", pval);
1682                         break;
1683                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
1684                         OP_STATE(ha->ip_config.iscsi_options,
1685                                  ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);
1686
1687                         len = sprintf(buf, "%s\n", pval);
1688                         break;
1689                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
1690                         OP_STATE(ha->ip_config.iscsi_options,
1691                                  ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);
1692
1693                         len = sprintf(buf, "%s\n", pval);
1694                         break;
1695                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
1696                         len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
1697                         break;
1698                 default:
1699                         len = -ENOSYS;
1700                 }
1701         }
1702
1703         return len;
1704 }
1705
1706 static struct iscsi_endpoint *
1707 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1708                    int non_blocking)
1709 {
1710         int ret;
1711         struct iscsi_endpoint *ep;
1712         struct qla_endpoint *qla_ep;
1713         struct scsi_qla_host *ha;
1714         struct sockaddr_in *addr;
1715         struct sockaddr_in6 *addr6;
1716
1717         if (!shost) {
1718                 ret = -ENXIO;
1719                 pr_err("%s: shost is NULL\n", __func__);
1720                 return ERR_PTR(ret);
1721         }
1722
1723         ha = iscsi_host_priv(shost);
1724         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
1725         if (!ep) {
1726                 ret = -ENOMEM;
1727                 return ERR_PTR(ret);
1728         }
1729
1730         qla_ep = ep->dd_data;
1731         memset(qla_ep, 0, sizeof(struct qla_endpoint));
1732         if (dst_addr->sa_family == AF_INET) {
1733                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
1734                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
1735                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
1736                                   (char *)&addr->sin_addr));
1737         } else if (dst_addr->sa_family == AF_INET6) {
1738                 memcpy(&qla_ep->dst_addr, dst_addr,
1739                        sizeof(struct sockaddr_in6));
1740                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
1741                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
1742                                   (char *)&addr6->sin6_addr));
1743         } else {
1744                 ql4_printk(KERN_WARNING, ha, "%s: Invalid endpoint\n",
1745                            __func__);
1746         }
1747
1748         qla_ep->host = shost;
1749
1750         return ep;
1751 }
1752
1753 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1754 {
1755         struct qla_endpoint *qla_ep;
1756         struct scsi_qla_host *ha;
1757         int ret = 0;
1758
1759         qla_ep = ep->dd_data;
1760         ha = to_qla_host(qla_ep->host);
1761         DEBUG2(pr_info_ratelimited("%s: host: %ld\n", __func__, ha->host_no));
1762
1763         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1764                 ret = 1;
1765
1766         return ret;
1767 }
1768
1769 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
1770 {
1771         struct qla_endpoint *qla_ep;
1772         struct scsi_qla_host *ha;
1773
1774         qla_ep = ep->dd_data;
1775         ha = to_qla_host(qla_ep->host);
1776         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1777                           ha->host_no));
1778         iscsi_destroy_endpoint(ep);
1779 }
1780
1781 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
1782                                 enum iscsi_param param,
1783                                 char *buf)
1784 {
1785         struct qla_endpoint *qla_ep = ep->dd_data;
1786         struct sockaddr *dst_addr;
1787         struct scsi_qla_host *ha;
1788
1789         if (!qla_ep)
1790                 return -ENOTCONN;
1791
1792         ha = to_qla_host(qla_ep->host);
1793         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1794                           ha->host_no));
1795
1796         switch (param) {
1797         case ISCSI_PARAM_CONN_PORT:
1798         case ISCSI_PARAM_CONN_ADDRESS:
1799                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1800                 if (!dst_addr)
1801                         return -ENOTCONN;
1802
1803                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1804                                                  &qla_ep->dst_addr, param, buf);
1805         default:
1806                 return -ENOSYS;
1807         }
1808 }
1809
1810 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1811                                    struct iscsi_stats *stats)
1812 {
1813         struct iscsi_session *sess;
1814         struct iscsi_cls_session *cls_sess;
1815         struct ddb_entry *ddb_entry;
1816         struct scsi_qla_host *ha;
1817         struct ql_iscsi_stats *ql_iscsi_stats;
1818         int stats_size;
1819         int ret;
1820         dma_addr_t iscsi_stats_dma;
1821
1822         cls_sess = iscsi_conn_to_session(cls_conn);
1823         sess = cls_sess->dd_data;
1824         ddb_entry = sess->dd_data;
1825         ha = ddb_entry->ha;
1826
1827         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1828                           ha->host_no));
1829         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1830         /* Allocate memory */
1831         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1832                                             &iscsi_stats_dma, GFP_KERNEL);
1833         if (!ql_iscsi_stats) {
1834                 ql4_printk(KERN_ERR, ha,
1835                            "Unable to allocate memory for iscsi stats\n");
1836                 goto exit_get_stats;
1837         }
1838
1839         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
1840                                      iscsi_stats_dma);
1841         if (ret != QLA_SUCCESS) {
1842                 ql4_printk(KERN_ERR, ha,
1843                            "Unable to retrieve iscsi stats\n");
1844                 goto free_stats;
1845         }
1846
1847         /* octets */
1848         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
1849         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
1850         /* xmit pdus */
1851         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
1852         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
1853         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
1854         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
1855         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
1856         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
1857         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
1858         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
1859         /* recv pdus */
1860         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
1861         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
1862         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
1863         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
1864         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
1865         stats->logoutrsp_pdus =
1866                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
1867         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
1868         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
1869         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
1870
1871 free_stats:
1872         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
1873                           iscsi_stats_dma);
1874 exit_get_stats:
1875         return;
1876 }
1877
1878 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
1879 {
1880         struct iscsi_cls_session *session;
1881         unsigned long flags;
1882         enum blk_eh_timer_return ret = BLK_EH_DONE;
1883
1884         session = starget_to_session(scsi_target(sc->device));
1885
1886         spin_lock_irqsave(&session->lock, flags);
1887         if (session->state == ISCSI_SESSION_FAILED)
1888                 ret = BLK_EH_RESET_TIMER;
1889         spin_unlock_irqrestore(&session->lock, flags);
1890
1891         return ret;
1892 }
1893
1894 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
1895 {
1896         struct scsi_qla_host *ha = to_qla_host(shost);
1897         struct iscsi_cls_host *ihost = shost->shost_data;
1898         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
1899
1900         qla4xxx_get_firmware_state(ha);
1901
1902         switch (ha->addl_fw_state & 0x0F00) {
1903         case FW_ADDSTATE_LINK_SPEED_10MBPS:
1904                 speed = ISCSI_PORT_SPEED_10MBPS;
1905                 break;
1906         case FW_ADDSTATE_LINK_SPEED_100MBPS:
1907                 speed = ISCSI_PORT_SPEED_100MBPS;
1908                 break;
1909         case FW_ADDSTATE_LINK_SPEED_1GBPS:
1910                 speed = ISCSI_PORT_SPEED_1GBPS;
1911                 break;
1912         case FW_ADDSTATE_LINK_SPEED_10GBPS:
1913                 speed = ISCSI_PORT_SPEED_10GBPS;
1914                 break;
1915         }
1916         ihost->port_speed = speed;
1917 }
1918
1919 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1920 {
1921         struct scsi_qla_host *ha = to_qla_host(shost);
1922         struct iscsi_cls_host *ihost = shost->shost_data;
1923         uint32_t state = ISCSI_PORT_STATE_DOWN;
1924
1925         if (test_bit(AF_LINK_UP, &ha->flags))
1926                 state = ISCSI_PORT_STATE_UP;
1927
1928         ihost->port_state = state;
1929 }
1930
1931 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1932                                   enum iscsi_host_param param, char *buf)
1933 {
1934         struct scsi_qla_host *ha = to_qla_host(shost);
1935         int len;
1936
1937         switch (param) {
1938         case ISCSI_HOST_PARAM_HWADDRESS:
1939                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1940                 break;
1941         case ISCSI_HOST_PARAM_IPADDRESS:
1942                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1943                 break;
1944         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1945                 len = sprintf(buf, "%s\n", ha->name_string);
1946                 break;
1947         case ISCSI_HOST_PARAM_PORT_STATE:
1948                 qla4xxx_set_port_state(shost);
1949                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1950                 break;
1951         case ISCSI_HOST_PARAM_PORT_SPEED:
1952                 qla4xxx_set_port_speed(shost);
1953                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1954                 break;
1955         default:
1956                 return -ENOSYS;
1957         }
1958
1959         return len;
1960 }
1961
1962 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1963 {
1964         if (ha->iface_ipv4)
1965                 return;
1966
1967         /* IPv4 */
1968         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1969                                             &qla4xxx_iscsi_transport,
1970                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1971         if (!ha->iface_ipv4)
1972                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1973                            "iface0.\n");
1974 }
1975
1976 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1977 {
1978         if (!ha->iface_ipv6_0)
1979                 /* IPv6 iface-0 */
1980                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1981                                                       &qla4xxx_iscsi_transport,
1982                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1983                                                       0);
1984         if (!ha->iface_ipv6_0)
1985                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1986                            "iface0.\n");
1987
1988         if (!ha->iface_ipv6_1)
1989                 /* IPv6 iface-1 */
1990                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1991                                                       &qla4xxx_iscsi_transport,
1992                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1993                                                       0);
1994         if (!ha->iface_ipv6_1)
1995                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1996                            "iface1.\n");
1997 }
1998
1999 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
2000 {
2001         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
2002                 qla4xxx_create_ipv4_iface(ha);
2003
2004         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
2005                 qla4xxx_create_ipv6_iface(ha);
2006 }
2007
2008 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
2009 {
2010         if (ha->iface_ipv4) {
2011                 iscsi_destroy_iface(ha->iface_ipv4);
2012                 ha->iface_ipv4 = NULL;
2013         }
2014 }
2015
2016 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
2017 {
2018         if (ha->iface_ipv6_0) {
2019                 iscsi_destroy_iface(ha->iface_ipv6_0);
2020                 ha->iface_ipv6_0 = NULL;
2021         }
2022         if (ha->iface_ipv6_1) {
2023                 iscsi_destroy_iface(ha->iface_ipv6_1);
2024                 ha->iface_ipv6_1 = NULL;
2025         }
2026 }
2027
2028 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
2029 {
2030         qla4xxx_destroy_ipv4_iface(ha);
2031         qla4xxx_destroy_ipv6_iface(ha);
2032 }
2033
2034 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
2035                              struct iscsi_iface_param_info *iface_param,
2036                              struct addr_ctrl_blk *init_fw_cb)
2037 {
2038         /*
2039          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
2040          * iface_num 1 is valid only for IPv6 Addr.
2041          */
2042         switch (iface_param->param) {
2043         case ISCSI_NET_PARAM_IPV6_ADDR:
2044                 if (iface_param->iface_num & 0x1)
2045                         /* IPv6 Addr 1 */
2046                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
2047                                sizeof(init_fw_cb->ipv6_addr1));
2048                 else
2049                         /* IPv6 Addr 0 */
2050                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
2051                                sizeof(init_fw_cb->ipv6_addr0));
2052                 break;
2053         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
2054                 if (iface_param->iface_num & 0x1)
2055                         break;
2056                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
2057                        sizeof(init_fw_cb->ipv6_if_id));
2058                 break;
2059         case ISCSI_NET_PARAM_IPV6_ROUTER:
2060                 if (iface_param->iface_num & 0x1)
2061                         break;
2062                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
2063                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2064                 break;
2065         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
2066                 /* Autocfg applies to even interface */
2067                 if (iface_param->iface_num & 0x1)
2068                         break;
2069
2070                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
2071                         init_fw_cb->ipv6_addtl_opts &=
2072                                 cpu_to_le16(
2073                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2074                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
2075                         init_fw_cb->ipv6_addtl_opts |=
2076                                 cpu_to_le16(
2077                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2078                 else
2079                         ql4_printk(KERN_ERR, ha,
2080                                    "Invalid autocfg setting for IPv6 addr\n");
2081                 break;
2082         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
2083                 /* Autocfg applies to even interface */
2084                 if (iface_param->iface_num & 0x1)
2085                         break;
2086
2087                 if (iface_param->value[0] ==
2088                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
2089                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
2090                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2091                 else if (iface_param->value[0] ==
2092                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
2093                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
2094                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2095                 else
2096                         ql4_printk(KERN_ERR, ha,
2097                                    "Invalid autocfg setting for IPv6 linklocal addr\n");
2098                 break;
2099         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
2100                 /* Autocfg applies to even interface */
2101                 if (iface_param->iface_num & 0x1)
2102                         break;
2103
2104                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
2105                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
2106                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2107                 break;
2108         case ISCSI_NET_PARAM_IFACE_ENABLE:
2109                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2110                         init_fw_cb->ipv6_opts |=
2111                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
2112                         qla4xxx_create_ipv6_iface(ha);
2113                 } else {
2114                         init_fw_cb->ipv6_opts &=
2115                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
2116                                             0xFFFF);
2117                         qla4xxx_destroy_ipv6_iface(ha);
2118                 }
2119                 break;
2120         case ISCSI_NET_PARAM_VLAN_TAG:
2121                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
2122                         break;
2123                 init_fw_cb->ipv6_vlan_tag =
2124                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2125                 break;
2126         case ISCSI_NET_PARAM_VLAN_ENABLED:
2127                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2128                         init_fw_cb->ipv6_opts |=
2129                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
2130                 else
2131                         init_fw_cb->ipv6_opts &=
2132                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
2133                 break;
2134         case ISCSI_NET_PARAM_MTU:
2135                 init_fw_cb->eth_mtu_size =
2136                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2137                 break;
2138         case ISCSI_NET_PARAM_PORT:
2139                 /* Autocfg applies to even interface */
2140                 if (iface_param->iface_num & 0x1)
2141                         break;
2142
2143                 init_fw_cb->ipv6_port =
2144                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2145                 break;
2146         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2147                 if (iface_param->iface_num & 0x1)
2148                         break;
2149                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2150                         init_fw_cb->ipv6_tcp_opts |=
2151                                 cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
2152                 else
2153                         init_fw_cb->ipv6_tcp_opts &=
2154                                 cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE &
2155                                             0xFFFF);
2156                 break;
2157         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2158                 if (iface_param->iface_num & 0x1)
2159                         break;
2160                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2161                         init_fw_cb->ipv6_tcp_opts |=
2162                                 cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2163                 else
2164                         init_fw_cb->ipv6_tcp_opts &=
2165                                 cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2166                 break;
2167         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2168                 if (iface_param->iface_num & 0x1)
2169                         break;
2170                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2171                         init_fw_cb->ipv6_tcp_opts |=
2172                                 cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2173                 else
2174                         init_fw_cb->ipv6_tcp_opts &=
2175                                 cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2176                 break;
2177         case ISCSI_NET_PARAM_TCP_WSF:
2178                 if (iface_param->iface_num & 0x1)
2179                         break;
2180                 init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
2181                 break;
2182         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2183                 if (iface_param->iface_num & 0x1)
2184                         break;
2185                 init_fw_cb->ipv6_tcp_opts &=
2186                                         cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
2187                 init_fw_cb->ipv6_tcp_opts |=
2188                                 cpu_to_le16((iface_param->value[0] << 1) &
2189                                             IPV6_TCPOPT_TIMER_SCALE);
2190                 break;
2191         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2192                 if (iface_param->iface_num & 0x1)
2193                         break;
2194                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2195                         init_fw_cb->ipv6_tcp_opts |=
2196                                 cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
2197                 else
2198                         init_fw_cb->ipv6_tcp_opts &=
2199                                 cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
2200                 break;
2201         case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
2202                 if (iface_param->iface_num & 0x1)
2203                         break;
2204                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2205                         init_fw_cb->ipv6_opts |=
2206                                 cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2207                 else
2208                         init_fw_cb->ipv6_opts &=
2209                                 cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2210                 break;
2211         case ISCSI_NET_PARAM_REDIRECT_EN:
2212                 if (iface_param->iface_num & 0x1)
2213                         break;
2214                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2215                         init_fw_cb->ipv6_opts |=
2216                                 cpu_to_le16(IPV6_OPT_REDIRECT_EN);
2217                 else
2218                         init_fw_cb->ipv6_opts &=
2219                                 cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
2220                 break;
2221         case ISCSI_NET_PARAM_IPV6_MLD_EN:
2222                 if (iface_param->iface_num & 0x1)
2223                         break;
2224                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2225                         init_fw_cb->ipv6_addtl_opts |=
2226                                 cpu_to_le16(IPV6_ADDOPT_MLD_EN);
2227                 else
2228                         init_fw_cb->ipv6_addtl_opts &=
2229                                 cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
2230                 break;
2231         case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
2232                 if (iface_param->iface_num & 0x1)
2233                         break;
2234                 init_fw_cb->ipv6_flow_lbl =
2235                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2236                 break;
2237         case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
2238                 if (iface_param->iface_num & 0x1)
2239                         break;
2240                 init_fw_cb->ipv6_traffic_class = iface_param->value[0];
2241                 break;
2242         case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
2243                 if (iface_param->iface_num & 0x1)
2244                         break;
2245                 init_fw_cb->ipv6_hop_limit = iface_param->value[0];
2246                 break;
2247         case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
2248                 if (iface_param->iface_num & 0x1)
2249                         break;
2250                 init_fw_cb->ipv6_nd_reach_time =
2251                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2252                 break;
2253         case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
2254                 if (iface_param->iface_num & 0x1)
2255                         break;
2256                 init_fw_cb->ipv6_nd_rexmit_timer =
2257                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2258                 break;
2259         case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
2260                 if (iface_param->iface_num & 0x1)
2261                         break;
2262                 init_fw_cb->ipv6_nd_stale_timeout =
2263                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2264                 break;
2265         case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
2266                 if (iface_param->iface_num & 0x1)
2267                         break;
2268                 init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
2269                 break;
2270         case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
2271                 if (iface_param->iface_num & 0x1)
2272                         break;
2273                 init_fw_cb->ipv6_gw_advrt_mtu =
2274                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2275                 break;
2276         default:
2277                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
2278                            iface_param->param);
2279                 break;
2280         }
2281 }
2282
2283 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
2284                              struct iscsi_iface_param_info *iface_param,
2285                              struct addr_ctrl_blk *init_fw_cb)
2286 {
2287         switch (iface_param->param) {
2288         case ISCSI_NET_PARAM_IPV4_ADDR:
2289                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
2290                        sizeof(init_fw_cb->ipv4_addr));
2291                 break;
2292         case ISCSI_NET_PARAM_IPV4_SUBNET:
2293                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
2294                        sizeof(init_fw_cb->ipv4_subnet));
2295                 break;
2296         case ISCSI_NET_PARAM_IPV4_GW:
2297                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
2298                        sizeof(init_fw_cb->ipv4_gw_addr));
2299                 break;
2300         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
2301                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
2302                         init_fw_cb->ipv4_tcp_opts |=
2303                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
2304                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
2305                         init_fw_cb->ipv4_tcp_opts &=
2306                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
2307                 else
2308                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
2309                 break;
2310         case ISCSI_NET_PARAM_IFACE_ENABLE:
2311                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2312                         init_fw_cb->ipv4_ip_opts |=
2313                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
2314                         qla4xxx_create_ipv4_iface(ha);
2315                 } else {
2316                         init_fw_cb->ipv4_ip_opts &=
2317                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
2318                                             0xFFFF);
2319                         qla4xxx_destroy_ipv4_iface(ha);
2320                 }
2321                 break;
2322         case ISCSI_NET_PARAM_VLAN_TAG:
2323                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
2324                         break;
2325                 init_fw_cb->ipv4_vlan_tag =
2326                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2327                 break;
2328         case ISCSI_NET_PARAM_VLAN_ENABLED:
2329                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2330                         init_fw_cb->ipv4_ip_opts |=
2331                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
2332                 else
2333                         init_fw_cb->ipv4_ip_opts &=
2334                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
2335                 break;
2336         case ISCSI_NET_PARAM_MTU:
2337                 init_fw_cb->eth_mtu_size =
2338                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2339                 break;
2340         case ISCSI_NET_PARAM_PORT:
2341                 init_fw_cb->ipv4_port =
2342                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2343                 break;
2344         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2345                 if (iface_param->iface_num & 0x1)
2346                         break;
2347                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2348                         init_fw_cb->ipv4_tcp_opts |=
2349                                 cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
2350                 else
2351                         init_fw_cb->ipv4_tcp_opts &=
2352                                 cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE &
2353                                             0xFFFF);
2354                 break;
2355         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2356                 if (iface_param->iface_num & 0x1)
2357                         break;
2358                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2359                         init_fw_cb->ipv4_tcp_opts |=
2360                                 cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
2361                 else
2362                         init_fw_cb->ipv4_tcp_opts &=
2363                                 cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
2364                 break;
2365         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2366                 if (iface_param->iface_num & 0x1)
2367                         break;
2368                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2369                         init_fw_cb->ipv4_tcp_opts |=
2370                                 cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
2371                 else
2372                         init_fw_cb->ipv4_tcp_opts &=
2373                                 cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
2374                 break;
2375         case ISCSI_NET_PARAM_TCP_WSF:
2376                 if (iface_param->iface_num & 0x1)
2377                         break;
2378                 init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
2379                 break;
2380         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2381                 if (iface_param->iface_num & 0x1)
2382                         break;
2383                 init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
2384                 init_fw_cb->ipv4_tcp_opts |=
2385                                 cpu_to_le16((iface_param->value[0] << 1) &
2386                                             TCPOPT_TIMER_SCALE);
2387                 break;
2388         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2389                 if (iface_param->iface_num & 0x1)
2390                         break;
2391                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2392                         init_fw_cb->ipv4_tcp_opts |=
2393                                 cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
2394                 else
2395                         init_fw_cb->ipv4_tcp_opts &=
2396                                 cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
2397                 break;
2398         case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
2399                 if (iface_param->iface_num & 0x1)
2400                         break;
2401                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2402                         init_fw_cb->ipv4_tcp_opts |=
2403                                 cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
2404                 else
2405                         init_fw_cb->ipv4_tcp_opts &=
2406                                 cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
2407                 break;
2408         case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
2409                 if (iface_param->iface_num & 0x1)
2410                         break;
2411                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2412                         init_fw_cb->ipv4_tcp_opts |=
2413                                 cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
2414                 else
2415                         init_fw_cb->ipv4_tcp_opts &=
2416                                 cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
2417                 break;
2418         case ISCSI_NET_PARAM_IPV4_TOS_EN:
2419                 if (iface_param->iface_num & 0x1)
2420                         break;
2421                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2422                         init_fw_cb->ipv4_ip_opts |=
2423                                 cpu_to_le16(IPOPT_IPV4_TOS_EN);
2424                 else
2425                         init_fw_cb->ipv4_ip_opts &=
2426                                 cpu_to_le16(~IPOPT_IPV4_TOS_EN);
2427                 break;
2428         case ISCSI_NET_PARAM_IPV4_TOS:
2429                 if (iface_param->iface_num & 0x1)
2430                         break;
2431                 init_fw_cb->ipv4_tos = iface_param->value[0];
2432                 break;
2433         case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
2434                 if (iface_param->iface_num & 0x1)
2435                         break;
2436                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2437                         init_fw_cb->ipv4_ip_opts |=
2438                                         cpu_to_le16(IPOPT_GRAT_ARP_EN);
2439                 else
2440                         init_fw_cb->ipv4_ip_opts &=
2441                                         cpu_to_le16(~IPOPT_GRAT_ARP_EN);
2442                 break;
2443         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
2444                 if (iface_param->iface_num & 0x1)
2445                         break;
2446                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2447                         init_fw_cb->ipv4_ip_opts |=
2448                                 cpu_to_le16(IPOPT_ALT_CID_EN);
2449                 else
2450                         init_fw_cb->ipv4_ip_opts &=
2451                                 cpu_to_le16(~IPOPT_ALT_CID_EN);
2452                 break;
2453         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
2454                 if (iface_param->iface_num & 0x1)
2455                         break;
2456                 memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
2457                        (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
2458                 init_fw_cb->ipv4_dhcp_alt_cid_len =
2459                                         strlen(init_fw_cb->ipv4_dhcp_alt_cid);
2460                 break;
2461         case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
2462                 if (iface_param->iface_num & 0x1)
2463                         break;
2464                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2465                         init_fw_cb->ipv4_ip_opts |=
2466                                         cpu_to_le16(IPOPT_REQ_VID_EN);
2467                 else
2468                         init_fw_cb->ipv4_ip_opts &=
2469                                         cpu_to_le16(~IPOPT_REQ_VID_EN);
2470                 break;
2471         case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
2472                 if (iface_param->iface_num & 0x1)
2473                         break;
2474                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2475                         init_fw_cb->ipv4_ip_opts |=
2476                                         cpu_to_le16(IPOPT_USE_VID_EN);
2477                 else
2478                         init_fw_cb->ipv4_ip_opts &=
2479                                         cpu_to_le16(~IPOPT_USE_VID_EN);
2480                 break;
2481         case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
2482                 if (iface_param->iface_num & 0x1)
2483                         break;
2484                 memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
2485                        (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
2486                 init_fw_cb->ipv4_dhcp_vid_len =
2487                                         strlen(init_fw_cb->ipv4_dhcp_vid);
2488                 break;
2489         case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
2490                 if (iface_param->iface_num & 0x1)
2491                         break;
2492                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2493                         init_fw_cb->ipv4_ip_opts |=
2494                                         cpu_to_le16(IPOPT_LEARN_IQN_EN);
2495                 else
2496                         init_fw_cb->ipv4_ip_opts &=
2497                                         cpu_to_le16(~IPOPT_LEARN_IQN_EN);
2498                 break;
2499         case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
2500                 if (iface_param->iface_num & 0x1)
2501                         break;
2502                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2503                         init_fw_cb->ipv4_ip_opts |=
2504                                 cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
2505                 else
2506                         init_fw_cb->ipv4_ip_opts &=
2507                                 cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
2508                 break;
2509         case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
2510                 if (iface_param->iface_num & 0x1)
2511                         break;
2512                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2513                         init_fw_cb->ipv4_ip_opts |=
2514                                 cpu_to_le16(IPOPT_IN_FORWARD_EN);
2515                 else
2516                         init_fw_cb->ipv4_ip_opts &=
2517                                 cpu_to_le16(~IPOPT_IN_FORWARD_EN);
2518                 break;
2519         case ISCSI_NET_PARAM_REDIRECT_EN:
2520                 if (iface_param->iface_num & 0x1)
2521                         break;
2522                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2523                         init_fw_cb->ipv4_ip_opts |=
2524                                 cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
2525                 else
2526                         init_fw_cb->ipv4_ip_opts &=
2527                                 cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
2528                 break;
2529         case ISCSI_NET_PARAM_IPV4_TTL:
2530                 if (iface_param->iface_num & 0x1)
2531                         break;
2532                 init_fw_cb->ipv4_ttl = iface_param->value[0];
2533                 break;
2534         default:
2535                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
2536                            iface_param->param);
2537                 break;
2538         }
2539 }
2540
2541 static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
2542                                     struct iscsi_iface_param_info *iface_param,
2543                                     struct addr_ctrl_blk *init_fw_cb)
2544 {
2545         switch (iface_param->param) {
2546         case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
2547                 if (iface_param->iface_num & 0x1)
2548                         break;
2549                 init_fw_cb->def_timeout =
2550                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2551                 break;
2552         case ISCSI_IFACE_PARAM_HDRDGST_EN:
2553                 if (iface_param->iface_num & 0x1)
2554                         break;
2555                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2556                         init_fw_cb->iscsi_opts |=
2557                                 cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
2558                 else
2559                         init_fw_cb->iscsi_opts &=
2560                                 cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
2561                 break;
2562         case ISCSI_IFACE_PARAM_DATADGST_EN:
2563                 if (iface_param->iface_num & 0x1)
2564                         break;
2565                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2566                         init_fw_cb->iscsi_opts |=
2567                                 cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
2568                 else
2569                         init_fw_cb->iscsi_opts &=
2570                                 cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
2571                 break;
2572         case ISCSI_IFACE_PARAM_IMM_DATA_EN:
2573                 if (iface_param->iface_num & 0x1)
2574                         break;
2575                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2576                         init_fw_cb->iscsi_opts |=
2577                                 cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
2578                 else
2579                         init_fw_cb->iscsi_opts &=
2580                                 cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
2581                 break;
2582         case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
2583                 if (iface_param->iface_num & 0x1)
2584                         break;
2585                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2586                         init_fw_cb->iscsi_opts |=
2587                                 cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
2588                 else
2589                         init_fw_cb->iscsi_opts &=
2590                                 cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
2591                 break;
2592         case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
2593                 if (iface_param->iface_num & 0x1)
2594                         break;
2595                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2596                         init_fw_cb->iscsi_opts |=
2597                                 cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
2598                 else
2599                         init_fw_cb->iscsi_opts &=
2600                                 cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
2601                 break;
2602         case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
2603                 if (iface_param->iface_num & 0x1)
2604                         break;
2605                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2606                         init_fw_cb->iscsi_opts |=
2607                                 cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
2608                 else
2609                         init_fw_cb->iscsi_opts &=
2610                                 cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
2611                 break;
2612         case ISCSI_IFACE_PARAM_ERL:
2613                 if (iface_param->iface_num & 0x1)
2614                         break;
2615                 init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
2616                 init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
2617                                                       ISCSIOPTS_ERL);
2618                 break;
2619         case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
2620                 if (iface_param->iface_num & 0x1)
2621                         break;
2622                 init_fw_cb->iscsi_max_pdu_size =
2623                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2624                                 BYTE_UNITS;
2625                 break;
2626         case ISCSI_IFACE_PARAM_FIRST_BURST:
2627                 if (iface_param->iface_num & 0x1)
2628                         break;
2629                 init_fw_cb->iscsi_fburst_len =
2630                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2631                                 BYTE_UNITS;
2632                 break;
2633         case ISCSI_IFACE_PARAM_MAX_R2T:
2634                 if (iface_param->iface_num & 0x1)
2635                         break;
2636                 init_fw_cb->iscsi_max_outstnd_r2t =
2637                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2638                 break;
2639         case ISCSI_IFACE_PARAM_MAX_BURST:
2640                 if (iface_param->iface_num & 0x1)
2641                         break;
2642                 init_fw_cb->iscsi_max_burst_len =
2643                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2644                                 BYTE_UNITS;
2645                 break;
2646         case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
2647                 if (iface_param->iface_num & 0x1)
2648                         break;
2649                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2650                         init_fw_cb->iscsi_opts |=
2651                                 cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
2652                 else
2653                         init_fw_cb->iscsi_opts &=
2654                                 cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
2655                 break;
2656         case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
2657                 if (iface_param->iface_num & 0x1)
2658                         break;
2659                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2660                         init_fw_cb->iscsi_opts |=
2661                                 cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
2662                 else
2663                         init_fw_cb->iscsi_opts &=
2664                                 cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
2665                 break;
2666         case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
2667                 if (iface_param->iface_num & 0x1)
2668                         break;
2669                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2670                         init_fw_cb->iscsi_opts |=
2671                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
2672                 else
2673                         init_fw_cb->iscsi_opts &=
2674                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
2675                 break;
2676         case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
2677                 if (iface_param->iface_num & 0x1)
2678                         break;
2679                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2680                         init_fw_cb->iscsi_opts |=
2681                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2682                 else
2683                         init_fw_cb->iscsi_opts &=
2684                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2685                 break;
2686         case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
2687                 if (iface_param->iface_num & 0x1)
2688                         break;
2689                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2690                         init_fw_cb->iscsi_opts |=
2691                                 cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2692                 else
2693                         init_fw_cb->iscsi_opts &=
2694                                 cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2695                 break;
2696         default:
2697                 ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
2698                            iface_param->param);
2699                 break;
2700         }
2701 }
2702
2703 static void
2704 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
2705 {
2706         struct addr_ctrl_blk_def *acb;
2707         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
2708         memset(acb->reserved1, 0, sizeof(acb->reserved1));
2709         memset(acb->reserved2, 0, sizeof(acb->reserved2));
2710         memset(acb->reserved3, 0, sizeof(acb->reserved3));
2711         memset(acb->reserved4, 0, sizeof(acb->reserved4));
2712         memset(acb->reserved5, 0, sizeof(acb->reserved5));
2713         memset(acb->reserved6, 0, sizeof(acb->reserved6));
2714         memset(acb->reserved7, 0, sizeof(acb->reserved7));
2715         memset(acb->reserved8, 0, sizeof(acb->reserved8));
2716         memset(acb->reserved9, 0, sizeof(acb->reserved9));
2717         memset(acb->reserved10, 0, sizeof(acb->reserved10));
2718         memset(acb->reserved11, 0, sizeof(acb->reserved11));
2719         memset(acb->reserved12, 0, sizeof(acb->reserved12));
2720         memset(acb->reserved13, 0, sizeof(acb->reserved13));
2721         memset(acb->reserved14, 0, sizeof(acb->reserved14));
2722         memset(acb->reserved15, 0, sizeof(acb->reserved15));
2723 }
2724
2725 static int
2726 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
2727 {
2728         struct scsi_qla_host *ha = to_qla_host(shost);
2729         int rval = 0;
2730         struct iscsi_iface_param_info *iface_param = NULL;
2731         struct addr_ctrl_blk *init_fw_cb = NULL;
2732         dma_addr_t init_fw_cb_dma;
2733         uint32_t mbox_cmd[MBOX_REG_COUNT];
2734         uint32_t mbox_sts[MBOX_REG_COUNT];
2735         uint32_t rem = len;
2736         struct nlattr *attr;
2737
2738         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
2739                                         sizeof(struct addr_ctrl_blk),
2740                                         &init_fw_cb_dma, GFP_KERNEL);
2741         if (!init_fw_cb) {
2742                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
2743                            __func__);
2744                 return -ENOMEM;
2745         }
2746
2747         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2748         memset(&mbox_sts, 0, sizeof(mbox_sts));
2749
2750         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
2751                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
2752                 rval = -EIO;
2753                 goto exit_init_fw_cb;
2754         }
2755
2756         nla_for_each_attr(attr, data, len, rem) {
2757                 iface_param = nla_data(attr);
2758
2759                 if (iface_param->param_type == ISCSI_NET_PARAM) {
2760                         switch (iface_param->iface_type) {
2761                         case ISCSI_IFACE_TYPE_IPV4:
2762                                 switch (iface_param->iface_num) {
2763                                 case 0:
2764                                         qla4xxx_set_ipv4(ha, iface_param,
2765                                                          init_fw_cb);
2766                                         break;
2767                                 default:
2768                                 /* Cannot have more than one IPv4 interface */
2769                                         ql4_printk(KERN_ERR, ha,
2770                                                    "Invalid IPv4 iface number = %d\n",
2771                                                    iface_param->iface_num);
2772                                         break;
2773                                 }
2774                                 break;
2775                         case ISCSI_IFACE_TYPE_IPV6:
2776                                 switch (iface_param->iface_num) {
2777                                 case 0:
2778                                 case 1:
2779                                         qla4xxx_set_ipv6(ha, iface_param,
2780                                                          init_fw_cb);
2781                                         break;
2782                                 default:
2783                                 /* Cannot have more than two IPv6 interface */
2784                                         ql4_printk(KERN_ERR, ha,
2785                                                    "Invalid IPv6 iface number = %d\n",
2786                                                    iface_param->iface_num);
2787                                         break;
2788                                 }
2789                                 break;
2790                         default:
2791                                 ql4_printk(KERN_ERR, ha,
2792                                            "Invalid iface type\n");
2793                                 break;
2794                         }
2795                 } else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
2796                                 qla4xxx_set_iscsi_param(ha, iface_param,
2797                                                         init_fw_cb);
2798                 } else {
2799                         continue;
2800                 }
2801         }
2802
2803         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
2804
2805         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
2806                                  sizeof(struct addr_ctrl_blk),
2807                                  FLASH_OPT_RMW_COMMIT);
2808         if (rval != QLA_SUCCESS) {
2809                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
2810                            __func__);
2811                 rval = -EIO;
2812                 goto exit_init_fw_cb;
2813         }
2814
2815         rval = qla4xxx_disable_acb(ha);
2816         if (rval != QLA_SUCCESS) {
2817                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
2818                            __func__);
2819                 rval = -EIO;
2820                 goto exit_init_fw_cb;
2821         }
2822
2823         wait_for_completion_timeout(&ha->disable_acb_comp,
2824                                     DISABLE_ACB_TOV * HZ);
2825
2826         qla4xxx_initcb_to_acb(init_fw_cb);
2827
2828         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
2829         if (rval != QLA_SUCCESS) {
2830                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
2831                            __func__);
2832                 rval = -EIO;
2833                 goto exit_init_fw_cb;
2834         }
2835
2836         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2837         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
2838                                   init_fw_cb_dma);
2839
2840 exit_init_fw_cb:
2841         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
2842                           init_fw_cb, init_fw_cb_dma);
2843
2844         return rval;
2845 }
2846
2847 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
2848                                      enum iscsi_param param, char *buf)
2849 {
2850         struct iscsi_session *sess = cls_sess->dd_data;
2851         struct ddb_entry *ddb_entry = sess->dd_data;
2852         struct scsi_qla_host *ha = ddb_entry->ha;
2853         struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
2854         struct ql4_chap_table chap_tbl;
2855         int rval, len;
2856         uint16_t idx;
2857
2858         memset(&chap_tbl, 0, sizeof(chap_tbl));
2859         switch (param) {
2860         case ISCSI_PARAM_CHAP_IN_IDX:
2861                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
2862                                               sess->password_in, BIDI_CHAP,
2863                                               &idx);
2864                 if (rval)
2865                         len = sprintf(buf, "\n");
2866                 else
2867                         len = sprintf(buf, "%hu\n", idx);
2868                 break;
2869         case ISCSI_PARAM_CHAP_OUT_IDX:
2870                 if (ddb_entry->ddb_type == FLASH_DDB) {
2871                         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
2872                                 idx = ddb_entry->chap_tbl_idx;
2873                                 rval = QLA_SUCCESS;
2874                         } else {
2875                                 rval = QLA_ERROR;
2876                         }
2877                 } else {
2878                         rval = qla4xxx_get_chap_index(ha, sess->username,
2879                                                       sess->password,
2880                                                       LOCAL_CHAP, &idx);
2881                 }
2882                 if (rval)
2883                         len = sprintf(buf, "\n");
2884                 else
2885                         len = sprintf(buf, "%hu\n", idx);
2886                 break;
2887         case ISCSI_PARAM_USERNAME:
2888         case ISCSI_PARAM_PASSWORD:
2889                 /* First, populate session username and password for FLASH DDB,
2890                  * if not already done. This happens when session login fails
2891                  * for a FLASH DDB.
2892                  */
2893                 if (ddb_entry->ddb_type == FLASH_DDB &&
2894                     ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
2895                     !sess->username && !sess->password) {
2896                         idx = ddb_entry->chap_tbl_idx;
2897                         rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
2898                                                             chap_tbl.secret,
2899                                                             idx);
2900                         if (!rval) {
2901                                 iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
2902                                                 (char *)chap_tbl.name,
2903                                                 strlen((char *)chap_tbl.name));
2904                                 iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
2905                                                 (char *)chap_tbl.secret,
2906                                                 chap_tbl.secret_len);
2907                         }
2908                 }
2909                 fallthrough;
2910         default:
2911                 return iscsi_session_get_param(cls_sess, param, buf);
2912         }
2913
2914         return len;
2915 }
2916
2917 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
2918                                   enum iscsi_param param, char *buf)
2919 {
2920         struct iscsi_conn *conn;
2921         struct qla_conn *qla_conn;
2922         struct sockaddr *dst_addr;
2923
2924         conn = cls_conn->dd_data;
2925         qla_conn = conn->dd_data;
2926         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2927
2928         switch (param) {
2929         case ISCSI_PARAM_CONN_PORT:
2930         case ISCSI_PARAM_CONN_ADDRESS:
2931                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
2932                                                  dst_addr, param, buf);
2933         default:
2934                 return iscsi_conn_get_param(cls_conn, param, buf);
2935         }
2936 }
2937
2938 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
2939 {
2940         uint32_t mbx_sts = 0;
2941         uint16_t tmp_ddb_index;
2942         int ret;
2943
2944 get_ddb_index:
2945         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
2946
2947         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
2948                 DEBUG2(ql4_printk(KERN_INFO, ha,
2949                                   "Free DDB index not available\n"));
2950                 ret = QLA_ERROR;
2951                 goto exit_get_ddb_index;
2952         }
2953
2954         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
2955                 goto get_ddb_index;
2956
2957         DEBUG2(ql4_printk(KERN_INFO, ha,
2958                           "Found a free DDB index at %d\n", tmp_ddb_index));
2959         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
2960         if (ret == QLA_ERROR) {
2961                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
2962                         ql4_printk(KERN_INFO, ha,
2963                                    "DDB index = %d not available trying next\n",
2964                                    tmp_ddb_index);
2965                         goto get_ddb_index;
2966                 }
2967                 DEBUG2(ql4_printk(KERN_INFO, ha,
2968                                   "Free FW DDB not available\n"));
2969         }
2970
2971         *ddb_index = tmp_ddb_index;
2972
2973 exit_get_ddb_index:
2974         return ret;
2975 }
2976
2977 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
2978                                    struct ddb_entry *ddb_entry,
2979                                    char *existing_ipaddr,
2980                                    char *user_ipaddr)
2981 {
2982         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
2983         char formatted_ipaddr[DDB_IPADDR_LEN];
2984         int status = QLA_SUCCESS, ret = 0;
2985
2986         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
2987                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2988                                '\0', NULL);
2989                 if (ret == 0) {
2990                         status = QLA_ERROR;
2991                         goto out_match;
2992                 }
2993                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
2994         } else {
2995                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2996                                '\0', NULL);
2997                 if (ret == 0) {
2998                         status = QLA_ERROR;
2999                         goto out_match;
3000                 }
3001                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
3002         }
3003
3004         if (strcmp(existing_ipaddr, formatted_ipaddr))
3005                 status = QLA_ERROR;
3006
3007 out_match:
3008         return status;
3009 }
3010
3011 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
3012                                       struct iscsi_cls_conn *cls_conn)
3013 {
3014         int idx = 0, max_ddbs, rval;
3015         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3016         struct iscsi_session *sess, *existing_sess;
3017         struct iscsi_conn *conn, *existing_conn;
3018         struct ddb_entry *ddb_entry;
3019
3020         sess = cls_sess->dd_data;
3021         conn = cls_conn->dd_data;
3022
3023         if (sess->targetname == NULL ||
3024             conn->persistent_address == NULL ||
3025             conn->persistent_port == 0)
3026                 return QLA_ERROR;
3027
3028         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
3029                                      MAX_DEV_DB_ENTRIES;
3030
3031         for (idx = 0; idx < max_ddbs; idx++) {
3032                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
3033                 if (ddb_entry == NULL)
3034                         continue;
3035
3036                 if (ddb_entry->ddb_type != FLASH_DDB)
3037                         continue;
3038
3039                 existing_sess = ddb_entry->sess->dd_data;
3040                 existing_conn = ddb_entry->conn->dd_data;
3041
3042                 if (existing_sess->targetname == NULL ||
3043                     existing_conn->persistent_address == NULL ||
3044                     existing_conn->persistent_port == 0)
3045                         continue;
3046
3047                 DEBUG2(ql4_printk(KERN_INFO, ha,
3048                                   "IQN = %s User IQN = %s\n",
3049                                   existing_sess->targetname,
3050                                   sess->targetname));
3051
3052                 DEBUG2(ql4_printk(KERN_INFO, ha,
3053                                   "IP = %s User IP = %s\n",
3054                                   existing_conn->persistent_address,
3055                                   conn->persistent_address));
3056
3057                 DEBUG2(ql4_printk(KERN_INFO, ha,
3058                                   "Port = %d User Port = %d\n",
3059                                   existing_conn->persistent_port,
3060                                   conn->persistent_port));
3061
3062                 if (strcmp(existing_sess->targetname, sess->targetname))
3063                         continue;
3064                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
3065                                         existing_conn->persistent_address,
3066                                         conn->persistent_address);
3067                 if (rval == QLA_ERROR)
3068                         continue;
3069                 if (existing_conn->persistent_port != conn->persistent_port)
3070                         continue;
3071                 break;
3072         }
3073
3074         if (idx == max_ddbs)
3075                 return QLA_ERROR;
3076
3077         DEBUG2(ql4_printk(KERN_INFO, ha,
3078                           "Match found in fwdb sessions\n"));
3079         return QLA_SUCCESS;
3080 }
3081
3082 static struct iscsi_cls_session *
3083 qla4xxx_session_create(struct iscsi_endpoint *ep,
3084                         uint16_t cmds_max, uint16_t qdepth,
3085                         uint32_t initial_cmdsn)
3086 {
3087         struct iscsi_cls_session *cls_sess;
3088         struct scsi_qla_host *ha;
3089         struct qla_endpoint *qla_ep;
3090         struct ddb_entry *ddb_entry;
3091         uint16_t ddb_index;
3092         struct iscsi_session *sess;
3093         int ret;
3094
3095         if (!ep) {
3096                 printk(KERN_ERR "qla4xxx: missing ep.\n");
3097                 return NULL;
3098         }
3099
3100         qla_ep = ep->dd_data;
3101         ha = to_qla_host(qla_ep->host);
3102         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3103                           ha->host_no));
3104
3105         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
3106         if (ret == QLA_ERROR)
3107                 return NULL;
3108
3109         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
3110                                        cmds_max, sizeof(struct ddb_entry),
3111                                        sizeof(struct ql4_task_data),
3112                                        initial_cmdsn, ddb_index);
3113         if (!cls_sess)
3114                 return NULL;
3115
3116         sess = cls_sess->dd_data;
3117         ddb_entry = sess->dd_data;
3118         ddb_entry->fw_ddb_index = ddb_index;
3119         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3120         ddb_entry->ha = ha;
3121         ddb_entry->sess = cls_sess;
3122         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
3123         ddb_entry->ddb_change = qla4xxx_ddb_change;
3124         clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
3125         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
3126         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
3127         ha->tot_ddbs++;
3128
3129         return cls_sess;
3130 }
3131
3132 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
3133 {
3134         struct iscsi_session *sess;
3135         struct ddb_entry *ddb_entry;
3136         struct scsi_qla_host *ha;
3137         unsigned long flags, wtime;
3138         struct dev_db_entry *fw_ddb_entry = NULL;
3139         dma_addr_t fw_ddb_entry_dma;
3140         uint32_t ddb_state;
3141         int ret;
3142
3143         sess = cls_sess->dd_data;
3144         ddb_entry = sess->dd_data;
3145         ha = ddb_entry->ha;
3146         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3147                           ha->host_no));
3148
3149         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3150                                           &fw_ddb_entry_dma, GFP_KERNEL);
3151         if (!fw_ddb_entry) {
3152                 ql4_printk(KERN_ERR, ha,
3153                            "%s: Unable to allocate dma buffer\n", __func__);
3154                 goto destroy_session;
3155         }
3156
3157         wtime = jiffies + (HZ * LOGOUT_TOV);
3158         do {
3159                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
3160                                               fw_ddb_entry, fw_ddb_entry_dma,
3161                                               NULL, NULL, &ddb_state, NULL,
3162                                               NULL, NULL);
3163                 if (ret == QLA_ERROR)
3164                         goto destroy_session;
3165
3166                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
3167                     (ddb_state == DDB_DS_SESSION_FAILED))
3168                         goto destroy_session;
3169
3170                 schedule_timeout_uninterruptible(HZ);
3171         } while ((time_after(wtime, jiffies)));
3172
3173 destroy_session:
3174         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
3175         if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
3176                 clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
3177         spin_lock_irqsave(&ha->hardware_lock, flags);
3178         qla4xxx_free_ddb(ha, ddb_entry);
3179         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3180
3181         iscsi_session_teardown(cls_sess);
3182
3183         if (fw_ddb_entry)
3184                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3185                                   fw_ddb_entry, fw_ddb_entry_dma);
3186 }
3187
3188 static struct iscsi_cls_conn *
3189 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
3190 {
3191         struct iscsi_cls_conn *cls_conn;
3192         struct iscsi_session *sess;
3193         struct ddb_entry *ddb_entry;
3194         struct scsi_qla_host *ha;
3195
3196         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
3197                                     conn_idx);
3198         if (!cls_conn) {
3199                 pr_info("%s: Can not create connection for conn_idx = %u\n",
3200                         __func__, conn_idx);
3201                 return NULL;
3202         }
3203
3204         sess = cls_sess->dd_data;
3205         ddb_entry = sess->dd_data;
3206         ddb_entry->conn = cls_conn;
3207
3208         ha = ddb_entry->ha;
3209         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: conn_idx = %u\n", __func__,
3210                           conn_idx));
3211         return cls_conn;
3212 }
3213
3214 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
3215                              struct iscsi_cls_conn *cls_conn,
3216                              uint64_t transport_fd, int is_leading)
3217 {
3218         struct iscsi_conn *conn;
3219         struct qla_conn *qla_conn;
3220         struct iscsi_endpoint *ep;
3221         struct ddb_entry *ddb_entry;
3222         struct scsi_qla_host *ha;
3223         struct iscsi_session *sess;
3224
3225         sess = cls_session->dd_data;
3226         ddb_entry = sess->dd_data;
3227         ha = ddb_entry->ha;
3228
3229         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3230                           cls_session->sid, cls_conn->cid));
3231
3232         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
3233                 return -EINVAL;
3234         ep = iscsi_lookup_endpoint(transport_fd);
3235         if (!ep)
3236                 return -EINVAL;
3237         conn = cls_conn->dd_data;
3238         qla_conn = conn->dd_data;
3239         qla_conn->qla_ep = ep->dd_data;
3240         return 0;
3241 }
3242
3243 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
3244 {
3245         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3246         struct iscsi_session *sess;
3247         struct ddb_entry *ddb_entry;
3248         struct scsi_qla_host *ha;
3249         struct dev_db_entry *fw_ddb_entry = NULL;
3250         dma_addr_t fw_ddb_entry_dma;
3251         uint32_t mbx_sts = 0;
3252         int ret = 0;
3253         int status = QLA_SUCCESS;
3254
3255         sess = cls_sess->dd_data;
3256         ddb_entry = sess->dd_data;
3257         ha = ddb_entry->ha;
3258         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3259                           cls_sess->sid, cls_conn->cid));
3260
3261         /* Check if we have  matching FW DDB, if yes then do not
3262          * login to this target. This could cause target to logout previous
3263          * connection
3264          */
3265         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
3266         if (ret == QLA_SUCCESS) {
3267                 ql4_printk(KERN_INFO, ha,
3268                            "Session already exist in FW.\n");
3269                 ret = -EEXIST;
3270                 goto exit_conn_start;
3271         }
3272
3273         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3274                                           &fw_ddb_entry_dma, GFP_KERNEL);
3275         if (!fw_ddb_entry) {
3276                 ql4_printk(KERN_ERR, ha,
3277                            "%s: Unable to allocate dma buffer\n", __func__);
3278                 ret = -ENOMEM;
3279                 goto exit_conn_start;
3280         }
3281
3282         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
3283         if (ret) {
3284                 /* If iscsid is stopped and started then no need to do
3285                 * set param again since ddb state will be already
3286                 * active and FW does not allow set ddb to an
3287                 * active session.
3288                 */
3289                 if (mbx_sts)
3290                         if (ddb_entry->fw_ddb_device_state ==
3291                                                 DDB_DS_SESSION_ACTIVE) {
3292                                 ddb_entry->unblock_sess(ddb_entry->sess);
3293                                 goto exit_set_param;
3294                         }
3295
3296                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
3297                            __func__, ddb_entry->fw_ddb_index);
3298                 goto exit_conn_start;
3299         }
3300
3301         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
3302         if (status == QLA_ERROR) {
3303                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
3304                            sess->targetname);
3305                 ret = -EINVAL;
3306                 goto exit_conn_start;
3307         }
3308
3309         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
3310                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
3311
3312         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
3313                       ddb_entry->fw_ddb_device_state));
3314
3315 exit_set_param:
3316         ret = 0;
3317
3318 exit_conn_start:
3319         if (fw_ddb_entry)
3320                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3321                                   fw_ddb_entry, fw_ddb_entry_dma);
3322         return ret;
3323 }
3324
3325 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
3326 {
3327         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3328         struct iscsi_session *sess;
3329         struct scsi_qla_host *ha;
3330         struct ddb_entry *ddb_entry;
3331         int options;
3332
3333         sess = cls_sess->dd_data;
3334         ddb_entry = sess->dd_data;
3335         ha = ddb_entry->ha;
3336         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: cid = %d\n", __func__,
3337                           cls_conn->cid));
3338
3339         options = LOGOUT_OPTION_CLOSE_SESSION;
3340         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
3341                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
3342 }
3343
3344 static void qla4xxx_task_work(struct work_struct *wdata)
3345 {
3346         struct ql4_task_data *task_data;
3347         struct scsi_qla_host *ha;
3348         struct passthru_status *sts;
3349         struct iscsi_task *task;
3350         struct iscsi_hdr *hdr;
3351         uint8_t *data;
3352         uint32_t data_len;
3353         struct iscsi_conn *conn;
3354         int hdr_len;
3355         itt_t itt;
3356
3357         task_data = container_of(wdata, struct ql4_task_data, task_work);
3358         ha = task_data->ha;
3359         task = task_data->task;
3360         sts = &task_data->sts;
3361         hdr_len = sizeof(struct iscsi_hdr);
3362
3363         DEBUG3(printk(KERN_INFO "Status returned\n"));
3364         DEBUG3(qla4xxx_dump_buffer(sts, 64));
3365         DEBUG3(printk(KERN_INFO "Response buffer"));
3366         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
3367
3368         conn = task->conn;
3369
3370         switch (sts->completionStatus) {
3371         case PASSTHRU_STATUS_COMPLETE:
3372                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
3373                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
3374                 itt = sts->handle;
3375                 hdr->itt = itt;
3376                 data = task_data->resp_buffer + hdr_len;
3377                 data_len = task_data->resp_len - hdr_len;
3378                 iscsi_complete_pdu(conn, hdr, data, data_len);
3379                 break;
3380         default:
3381                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
3382                            sts->completionStatus);
3383                 break;
3384         }
3385         return;
3386 }
3387
3388 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3389 {
3390         struct ql4_task_data *task_data;
3391         struct iscsi_session *sess;
3392         struct ddb_entry *ddb_entry;
3393         struct scsi_qla_host *ha;
3394         int hdr_len;
3395
3396         sess = task->conn->session;
3397         ddb_entry = sess->dd_data;
3398         ha = ddb_entry->ha;
3399         task_data = task->dd_data;
3400         memset(task_data, 0, sizeof(struct ql4_task_data));
3401
3402         if (task->sc) {
3403                 ql4_printk(KERN_INFO, ha,
3404                            "%s: SCSI Commands not implemented\n", __func__);
3405                 return -EINVAL;
3406         }
3407
3408         hdr_len = sizeof(struct iscsi_hdr);
3409         task_data->ha = ha;
3410         task_data->task = task;
3411
3412         if (task->data_count) {
3413                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
3414                                                      task->data_count,
3415                                                      DMA_TO_DEVICE);
3416         }
3417
3418         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3419                       __func__, task->conn->max_recv_dlength, hdr_len));
3420
3421         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
3422         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
3423                                                     task_data->resp_len,
3424                                                     &task_data->resp_dma,
3425                                                     GFP_ATOMIC);
3426         if (!task_data->resp_buffer)
3427                 goto exit_alloc_pdu;
3428
3429         task_data->req_len = task->data_count + hdr_len;
3430         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
3431                                                    task_data->req_len,
3432                                                    &task_data->req_dma,
3433                                                    GFP_ATOMIC);
3434         if (!task_data->req_buffer)
3435                 goto exit_alloc_pdu;
3436
3437         task->hdr = task_data->req_buffer;
3438
3439         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
3440
3441         return 0;
3442
3443 exit_alloc_pdu:
3444         if (task_data->resp_buffer)
3445                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3446                                   task_data->resp_buffer, task_data->resp_dma);
3447
3448         if (task_data->req_buffer)
3449                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3450                                   task_data->req_buffer, task_data->req_dma);
3451         return -ENOMEM;
3452 }
3453
3454 static void qla4xxx_task_cleanup(struct iscsi_task *task)
3455 {
3456         struct ql4_task_data *task_data;
3457         struct iscsi_session *sess;
3458         struct ddb_entry *ddb_entry;
3459         struct scsi_qla_host *ha;
3460         int hdr_len;
3461
3462         hdr_len = sizeof(struct iscsi_hdr);
3463         sess = task->conn->session;
3464         ddb_entry = sess->dd_data;
3465         ha = ddb_entry->ha;
3466         task_data = task->dd_data;
3467
3468         if (task->data_count) {
3469                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
3470                                  task->data_count, DMA_TO_DEVICE);
3471         }
3472
3473         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3474                       __func__, task->conn->max_recv_dlength, hdr_len));
3475
3476         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3477                           task_data->resp_buffer, task_data->resp_dma);
3478         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3479                           task_data->req_buffer, task_data->req_dma);
3480         return;
3481 }
3482
3483 static int qla4xxx_task_xmit(struct iscsi_task *task)
3484 {
3485         struct scsi_cmnd *sc = task->sc;
3486         struct iscsi_session *sess = task->conn->session;
3487         struct ddb_entry *ddb_entry = sess->dd_data;
3488         struct scsi_qla_host *ha = ddb_entry->ha;
3489
3490         if (!sc)
3491                 return qla4xxx_send_passthru0(task);
3492
3493         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
3494                    __func__);
3495         return -ENOSYS;
3496 }
3497
3498 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
3499                                          struct iscsi_bus_flash_conn *conn,
3500                                          struct dev_db_entry *fw_ddb_entry)
3501 {
3502         unsigned long options = 0;
3503         int rc = 0;
3504
3505         options = le16_to_cpu(fw_ddb_entry->options);
3506         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3507         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3508                 rc = iscsi_switch_str_param(&sess->portal_type,
3509                                             PORTAL_TYPE_IPV6);
3510                 if (rc)
3511                         goto exit_copy;
3512         } else {
3513                 rc = iscsi_switch_str_param(&sess->portal_type,
3514                                             PORTAL_TYPE_IPV4);
3515                 if (rc)
3516                         goto exit_copy;
3517         }
3518
3519         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3520                                               &options);
3521         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3522         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
3523
3524         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3525         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3526         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3527         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3528         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3529         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3530                                             &options);
3531         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3532         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3533         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
3534         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3535                                              &options);
3536         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3537         sess->discovery_auth_optional =
3538                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3539         if (test_bit(ISCSIOPT_ERL1, &options))
3540                 sess->erl |= BIT_1;
3541         if (test_bit(ISCSIOPT_ERL0, &options))
3542                 sess->erl |= BIT_0;
3543
3544         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3545         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3546         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3547         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3548         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3549                 conn->tcp_timer_scale |= BIT_3;
3550         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3551                 conn->tcp_timer_scale |= BIT_2;
3552         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3553                 conn->tcp_timer_scale |= BIT_1;
3554
3555         conn->tcp_timer_scale >>= 1;
3556         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3557
3558         options = le16_to_cpu(fw_ddb_entry->ip_options);
3559         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3560
3561         conn->max_recv_dlength = BYTE_UNITS *
3562                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3563         conn->max_xmit_dlength = BYTE_UNITS *
3564                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3565         sess->first_burst = BYTE_UNITS *
3566                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3567         sess->max_burst = BYTE_UNITS *
3568                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3569         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3570         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3571         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3572         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3573         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3574         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3575         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3576         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
3577         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
3578         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3579         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3580         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3581         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
3582         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
3583         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3584         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3585
3586         sess->default_taskmgmt_timeout =
3587                                 le16_to_cpu(fw_ddb_entry->def_timeout);
3588         conn->port = le16_to_cpu(fw_ddb_entry->port);
3589
3590         options = le16_to_cpu(fw_ddb_entry->options);
3591         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3592         if (!conn->ipaddress) {
3593                 rc = -ENOMEM;
3594                 goto exit_copy;
3595         }
3596
3597         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3598         if (!conn->redirect_ipaddr) {
3599                 rc = -ENOMEM;
3600                 goto exit_copy;
3601         }
3602
3603         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3604         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
3605
3606         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3607                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
3608
3609                 conn->link_local_ipv6_addr = kmemdup(
3610                                         fw_ddb_entry->link_local_ipv6_addr,
3611                                         IPv6_ADDR_LEN, GFP_KERNEL);
3612                 if (!conn->link_local_ipv6_addr) {
3613                         rc = -ENOMEM;
3614                         goto exit_copy;
3615                 }
3616         } else {
3617                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3618         }
3619
3620         if (fw_ddb_entry->iscsi_name[0]) {
3621                 rc = iscsi_switch_str_param(&sess->targetname,
3622                                             (char *)fw_ddb_entry->iscsi_name);
3623                 if (rc)
3624                         goto exit_copy;
3625         }
3626
3627         if (fw_ddb_entry->iscsi_alias[0]) {
3628                 rc = iscsi_switch_str_param(&sess->targetalias,
3629                                             (char *)fw_ddb_entry->iscsi_alias);
3630                 if (rc)
3631                         goto exit_copy;
3632         }
3633
3634         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3635
3636 exit_copy:
3637         return rc;
3638 }
3639
3640 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
3641                                        struct iscsi_bus_flash_conn *conn,
3642                                        struct dev_db_entry *fw_ddb_entry)
3643 {
3644         uint16_t options;
3645         int rc = 0;
3646
3647         options = le16_to_cpu(fw_ddb_entry->options);
3648         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
3649         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3650                 options |= BIT_8;
3651         else
3652                 options &= ~BIT_8;
3653
3654         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
3655         SET_BITVAL(sess->discovery_sess, options, BIT_4);
3656         SET_BITVAL(sess->entry_state, options, BIT_3);
3657         fw_ddb_entry->options = cpu_to_le16(options);
3658
3659         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3660         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
3661         SET_BITVAL(conn->datadgst_en, options, BIT_12);
3662         SET_BITVAL(sess->imm_data_en, options, BIT_11);
3663         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
3664         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
3665         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
3666         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
3667         SET_BITVAL(conn->snack_req_en, options, BIT_6);
3668         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
3669         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
3670         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
3671         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
3672         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
3673         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
3674
3675         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3676         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
3677         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
3678         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
3679         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
3680         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
3681         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
3682         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
3683         fw_ddb_entry->tcp_options = cpu_to_le16(options);
3684
3685         options = le16_to_cpu(fw_ddb_entry->ip_options);
3686         SET_BITVAL(conn->fragment_disable, options, BIT_4);
3687         fw_ddb_entry->ip_options = cpu_to_le16(options);
3688
3689         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
3690         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
3691                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
3692         fw_ddb_entry->iscsi_max_snd_data_seg_len =
3693                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
3694         fw_ddb_entry->iscsi_first_burst_len =
3695                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
3696         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
3697                                             BYTE_UNITS);
3698         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
3699         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
3700         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
3701         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
3702         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
3703         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
3704         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
3705         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
3706         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
3707         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
3708         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
3709         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
3710         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
3711         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
3712         fw_ddb_entry->port = cpu_to_le16(conn->port);
3713         fw_ddb_entry->def_timeout =
3714                                 cpu_to_le16(sess->default_taskmgmt_timeout);
3715
3716         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3717                 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
3718         else
3719                 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
3720
3721         if (conn->ipaddress)
3722                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
3723                        sizeof(fw_ddb_entry->ip_addr));
3724
3725         if (conn->redirect_ipaddr)
3726                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
3727                        sizeof(fw_ddb_entry->tgt_addr));
3728
3729         if (conn->link_local_ipv6_addr)
3730                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
3731                        conn->link_local_ipv6_addr,
3732                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
3733
3734         if (sess->targetname)
3735                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
3736                        sizeof(fw_ddb_entry->iscsi_name));
3737
3738         if (sess->targetalias)
3739                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
3740                        sizeof(fw_ddb_entry->iscsi_alias));
3741
3742         COPY_ISID(fw_ddb_entry->isid, sess->isid);
3743
3744         return rc;
3745 }
3746
3747 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
3748                                              struct iscsi_session *sess,
3749                                              struct dev_db_entry *fw_ddb_entry)
3750 {
3751         unsigned long options = 0;
3752         uint16_t ddb_link;
3753         uint16_t disc_parent;
3754         char ip_addr[DDB_IPADDR_LEN];
3755
3756         options = le16_to_cpu(fw_ddb_entry->options);
3757         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3758         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3759                                               &options);
3760         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3761
3762         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3763         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3764         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3765         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3766         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3767         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3768                                             &options);
3769         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3770         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3771         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3772                                              &options);
3773         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3774         sess->discovery_auth_optional =
3775                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3776         if (test_bit(ISCSIOPT_ERL1, &options))
3777                 sess->erl |= BIT_1;
3778         if (test_bit(ISCSIOPT_ERL0, &options))
3779                 sess->erl |= BIT_0;
3780
3781         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3782         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3783         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3784         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3785         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3786                 conn->tcp_timer_scale |= BIT_3;
3787         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3788                 conn->tcp_timer_scale |= BIT_2;
3789         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3790                 conn->tcp_timer_scale |= BIT_1;
3791
3792         conn->tcp_timer_scale >>= 1;
3793         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3794
3795         options = le16_to_cpu(fw_ddb_entry->ip_options);
3796         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3797
3798         conn->max_recv_dlength = BYTE_UNITS *
3799                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3800         conn->max_xmit_dlength = BYTE_UNITS *
3801                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3802         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3803         sess->first_burst = BYTE_UNITS *
3804                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3805         sess->max_burst = BYTE_UNITS *
3806                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3807         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3808         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3809         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3810         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3811         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3812         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3813         conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3814         conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
3815         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3816         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3817         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3818         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3819         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3820
3821         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
3822         if (ddb_link == DDB_ISNS)
3823                 disc_parent = ISCSI_DISC_PARENT_ISNS;
3824         else if (ddb_link == DDB_NO_LINK)
3825                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3826         else if (ddb_link < MAX_DDB_ENTRIES)
3827                 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
3828         else
3829                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3830
3831         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
3832                         iscsi_get_discovery_parent_name(disc_parent), 0);
3833
3834         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
3835                         (char *)fw_ddb_entry->iscsi_alias, 0);
3836
3837         options = le16_to_cpu(fw_ddb_entry->options);
3838         if (options & DDB_OPT_IPV6_DEVICE) {
3839                 memset(ip_addr, 0, sizeof(ip_addr));
3840                 sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
3841                 iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
3842                                 (char *)ip_addr, 0);
3843         }
3844 }
3845
3846 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
3847                                      struct dev_db_entry *fw_ddb_entry,
3848                                      struct iscsi_cls_session *cls_sess,
3849                                      struct iscsi_cls_conn *cls_conn)
3850 {
3851         int buflen = 0;
3852         struct iscsi_session *sess;
3853         struct ddb_entry *ddb_entry;
3854         struct ql4_chap_table chap_tbl;
3855         struct iscsi_conn *conn;
3856         char ip_addr[DDB_IPADDR_LEN];
3857         uint16_t options = 0;
3858
3859         sess = cls_sess->dd_data;
3860         ddb_entry = sess->dd_data;
3861         conn = cls_conn->dd_data;
3862         memset(&chap_tbl, 0, sizeof(chap_tbl));
3863
3864         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3865
3866         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3867
3868         sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
3869         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
3870
3871         memset(ip_addr, 0, sizeof(ip_addr));
3872         options = le16_to_cpu(fw_ddb_entry->options);
3873         if (options & DDB_OPT_IPV6_DEVICE) {
3874                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
3875
3876                 memset(ip_addr, 0, sizeof(ip_addr));
3877                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3878         } else {
3879                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
3880                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3881         }
3882
3883         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
3884                         (char *)ip_addr, buflen);
3885         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
3886                         (char *)fw_ddb_entry->iscsi_name, buflen);
3887         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
3888                         (char *)ha->name_string, buflen);
3889
3890         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
3891                 if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
3892                                                    chap_tbl.secret,
3893                                                    ddb_entry->chap_tbl_idx)) {
3894                         iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
3895                                         (char *)chap_tbl.name,
3896                                         strlen((char *)chap_tbl.name));
3897                         iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
3898                                         (char *)chap_tbl.secret,
3899                                         chap_tbl.secret_len);
3900                 }
3901         }
3902 }
3903
3904 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
3905                                              struct ddb_entry *ddb_entry)
3906 {
3907         struct iscsi_cls_session *cls_sess;
3908         struct iscsi_cls_conn *cls_conn;
3909         uint32_t ddb_state;
3910         dma_addr_t fw_ddb_entry_dma;
3911         struct dev_db_entry *fw_ddb_entry;
3912
3913         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3914                                           &fw_ddb_entry_dma, GFP_KERNEL);
3915         if (!fw_ddb_entry) {
3916                 ql4_printk(KERN_ERR, ha,
3917                            "%s: Unable to allocate dma buffer\n", __func__);
3918                 goto exit_session_conn_fwddb_param;
3919         }
3920
3921         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3922                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3923                                     NULL, NULL, NULL) == QLA_ERROR) {
3924                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3925                                   "get_ddb_entry for fw_ddb_index %d\n",
3926                                   ha->host_no, __func__,
3927                                   ddb_entry->fw_ddb_index));
3928                 goto exit_session_conn_fwddb_param;
3929         }
3930
3931         cls_sess = ddb_entry->sess;
3932
3933         cls_conn = ddb_entry->conn;
3934
3935         /* Update params */
3936         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
3937
3938 exit_session_conn_fwddb_param:
3939         if (fw_ddb_entry)
3940                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3941                                   fw_ddb_entry, fw_ddb_entry_dma);
3942 }
3943
3944 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
3945                                        struct ddb_entry *ddb_entry)
3946 {
3947         struct iscsi_cls_session *cls_sess;
3948         struct iscsi_cls_conn *cls_conn;
3949         struct iscsi_session *sess;
3950         struct iscsi_conn *conn;
3951         uint32_t ddb_state;
3952         dma_addr_t fw_ddb_entry_dma;
3953         struct dev_db_entry *fw_ddb_entry;
3954
3955         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3956                                           &fw_ddb_entry_dma, GFP_KERNEL);
3957         if (!fw_ddb_entry) {
3958                 ql4_printk(KERN_ERR, ha,
3959                            "%s: Unable to allocate dma buffer\n", __func__);
3960                 goto exit_session_conn_param;
3961         }
3962
3963         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3964                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3965                                     NULL, NULL, NULL) == QLA_ERROR) {
3966                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3967                                   "get_ddb_entry for fw_ddb_index %d\n",
3968                                   ha->host_no, __func__,
3969                                   ddb_entry->fw_ddb_index));
3970                 goto exit_session_conn_param;
3971         }
3972
3973         cls_sess = ddb_entry->sess;
3974         sess = cls_sess->dd_data;
3975
3976         cls_conn = ddb_entry->conn;
3977         conn = cls_conn->dd_data;
3978
3979         /* Update timers after login */
3980         ddb_entry->default_relogin_timeout =
3981                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
3982                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
3983                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
3984         ddb_entry->default_time2wait =
3985                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3986
3987         /* Update params */
3988         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3989         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3990
3991         memcpy(sess->initiatorname, ha->name_string,
3992                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
3993
3994 exit_session_conn_param:
3995         if (fw_ddb_entry)
3996                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3997                                   fw_ddb_entry, fw_ddb_entry_dma);
3998 }
3999
4000 /*
4001  * Timer routines
4002  */
4003 static void qla4xxx_timer(struct timer_list *t);
4004
4005 static void qla4xxx_start_timer(struct scsi_qla_host *ha,
4006                                 unsigned long interval)
4007 {
4008         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
4009                      __func__, ha->host->host_no));
4010         timer_setup(&ha->timer, qla4xxx_timer, 0);
4011         ha->timer.expires = jiffies + interval * HZ;
4012         add_timer(&ha->timer);
4013         ha->timer_active = 1;
4014 }
4015
4016 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
4017 {
4018         del_timer_sync(&ha->timer);
4019         ha->timer_active = 0;
4020 }
4021
4022 /***
4023  * qla4xxx_mark_device_missing - blocks the session
4024  * @cls_session: Pointer to the session to be blocked
4025  * @ddb_entry: Pointer to device database entry
4026  *
4027  * This routine marks a device missing and close connection.
4028  **/
4029 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
4030 {
4031         iscsi_block_session(cls_session);
4032 }
4033
4034 /**
4035  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
4036  * @ha: Pointer to host adapter structure.
4037  *
4038  * This routine marks a device missing and resets the relogin retry count.
4039  **/
4040 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
4041 {
4042         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
4043 }
4044
4045 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
4046                                        struct ddb_entry *ddb_entry,
4047                                        struct scsi_cmnd *cmd)
4048 {
4049         struct srb *srb;
4050
4051         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
4052         if (!srb)
4053                 return srb;
4054
4055         kref_init(&srb->srb_ref);
4056         srb->ha = ha;
4057         srb->ddb = ddb_entry;
4058         srb->cmd = cmd;
4059         srb->flags = 0;
4060         CMD_SP(cmd) = (void *)srb;
4061
4062         return srb;
4063 }
4064
4065 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
4066 {
4067         struct scsi_cmnd *cmd = srb->cmd;
4068
4069         if (srb->flags & SRB_DMA_VALID) {
4070                 scsi_dma_unmap(cmd);
4071                 srb->flags &= ~SRB_DMA_VALID;
4072         }
4073         CMD_SP(cmd) = NULL;
4074 }
4075
4076 void qla4xxx_srb_compl(struct kref *ref)
4077 {
4078         struct srb *srb = container_of(ref, struct srb, srb_ref);
4079         struct scsi_cmnd *cmd = srb->cmd;
4080         struct scsi_qla_host *ha = srb->ha;
4081
4082         qla4xxx_srb_free_dma(ha, srb);
4083
4084         mempool_free(srb, ha->srb_mempool);
4085
4086         cmd->scsi_done(cmd);
4087 }
4088
4089 /**
4090  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
4091  * @host: scsi host
4092  * @cmd: Pointer to Linux's SCSI command structure
4093  *
4094  * Remarks:
4095  * This routine is invoked by Linux to send a SCSI command to the driver.
4096  * The mid-level driver tries to ensure that queuecommand never gets
4097  * invoked concurrently with itself or the interrupt handler (although
4098  * the interrupt handler may call this routine as part of request-
4099  * completion handling).   Unfortunely, it sometimes calls the scheduler
4100  * in interrupt context which is a big NO! NO!.
4101  **/
4102 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
4103 {
4104         struct scsi_qla_host *ha = to_qla_host(host);
4105         struct ddb_entry *ddb_entry = cmd->device->hostdata;
4106         struct iscsi_cls_session *sess = ddb_entry->sess;
4107         struct srb *srb;
4108         int rval;
4109
4110         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4111                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
4112                         cmd->result = DID_NO_CONNECT << 16;
4113                 else
4114                         cmd->result = DID_REQUEUE << 16;
4115                 goto qc_fail_command;
4116         }
4117
4118         if (!sess) {
4119                 cmd->result = DID_IMM_RETRY << 16;
4120                 goto qc_fail_command;
4121         }
4122
4123         rval = iscsi_session_chkready(sess);
4124         if (rval) {
4125                 cmd->result = rval;
4126                 goto qc_fail_command;
4127         }
4128
4129         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4130             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4131             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4132             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4133             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4134             !test_bit(AF_ONLINE, &ha->flags) ||
4135             !test_bit(AF_LINK_UP, &ha->flags) ||
4136             test_bit(AF_LOOPBACK, &ha->flags) ||
4137             test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
4138             test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
4139             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
4140                 goto qc_host_busy;
4141
4142         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
4143         if (!srb)
4144                 goto qc_host_busy;
4145
4146         rval = qla4xxx_send_command_to_isp(ha, srb);
4147         if (rval != QLA_SUCCESS)
4148                 goto qc_host_busy_free_sp;
4149
4150         return 0;
4151
4152 qc_host_busy_free_sp:
4153         qla4xxx_srb_free_dma(ha, srb);
4154         mempool_free(srb, ha->srb_mempool);
4155
4156 qc_host_busy:
4157         return SCSI_MLQUEUE_HOST_BUSY;
4158
4159 qc_fail_command:
4160         cmd->scsi_done(cmd);
4161
4162         return 0;
4163 }
4164
4165 /**
4166  * qla4xxx_mem_free - frees memory allocated to adapter
4167  * @ha: Pointer to host adapter structure.
4168  *
4169  * Frees memory previously allocated by qla4xxx_mem_alloc
4170  **/
4171 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
4172 {
4173         if (ha->queues)
4174                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
4175                                   ha->queues_dma);
4176
4177         if (ha->fw_dump)
4178                 vfree(ha->fw_dump);
4179
4180         ha->queues_len = 0;
4181         ha->queues = NULL;
4182         ha->queues_dma = 0;
4183         ha->request_ring = NULL;
4184         ha->request_dma = 0;
4185         ha->response_ring = NULL;
4186         ha->response_dma = 0;
4187         ha->shadow_regs = NULL;
4188         ha->shadow_regs_dma = 0;
4189         ha->fw_dump = NULL;
4190         ha->fw_dump_size = 0;
4191
4192         /* Free srb pool. */
4193         mempool_destroy(ha->srb_mempool);
4194         ha->srb_mempool = NULL;
4195
4196         dma_pool_destroy(ha->chap_dma_pool);
4197
4198         if (ha->chap_list)
4199                 vfree(ha->chap_list);
4200         ha->chap_list = NULL;
4201
4202         dma_pool_destroy(ha->fw_ddb_dma_pool);
4203
4204         /* release io space registers  */
4205         if (is_qla8022(ha)) {
4206                 if (ha->nx_pcibase)
4207                         iounmap(
4208                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
4209         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4210                 if (ha->nx_pcibase)
4211                         iounmap(
4212                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
4213         } else if (ha->reg) {
4214                 iounmap(ha->reg);
4215         }
4216
4217         if (ha->reset_tmplt.buff)
4218                 vfree(ha->reset_tmplt.buff);
4219
4220         pci_release_regions(ha->pdev);
4221 }
4222
4223 /**
4224  * qla4xxx_mem_alloc - allocates memory for use by adapter.
4225  * @ha: Pointer to host adapter structure
4226  *
4227  * Allocates DMA memory for request and response queues. Also allocates memory
4228  * for srbs.
4229  **/
4230 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
4231 {
4232         unsigned long align;
4233
4234         /* Allocate contiguous block of DMA memory for queues. */
4235         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4236                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
4237                           sizeof(struct shadow_regs) +
4238                           MEM_ALIGN_VALUE +
4239                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
4240         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
4241                                         &ha->queues_dma, GFP_KERNEL);
4242         if (ha->queues == NULL) {
4243                 ql4_printk(KERN_WARNING, ha,
4244                     "Memory Allocation failed - queues.\n");
4245
4246                 goto mem_alloc_error_exit;
4247         }
4248
4249         /*
4250          * As per RISC alignment requirements -- the bus-address must be a
4251          * multiple of the request-ring size (in bytes).
4252          */
4253         align = 0;
4254         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
4255                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
4256                                            (MEM_ALIGN_VALUE - 1));
4257
4258         /* Update request and response queue pointers. */
4259         ha->request_dma = ha->queues_dma + align;
4260         ha->request_ring = (struct queue_entry *) (ha->queues + align);
4261         ha->response_dma = ha->queues_dma + align +
4262                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
4263         ha->response_ring = (struct queue_entry *) (ha->queues + align +
4264                                                     (REQUEST_QUEUE_DEPTH *
4265                                                      QUEUE_SIZE));
4266         ha->shadow_regs_dma = ha->queues_dma + align +
4267                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4268                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
4269         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
4270                                                   (REQUEST_QUEUE_DEPTH *
4271                                                    QUEUE_SIZE) +
4272                                                   (RESPONSE_QUEUE_DEPTH *
4273                                                    QUEUE_SIZE));
4274
4275         /* Allocate memory for srb pool. */
4276         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
4277                                          mempool_free_slab, srb_cachep);
4278         if (ha->srb_mempool == NULL) {
4279                 ql4_printk(KERN_WARNING, ha,
4280                     "Memory Allocation failed - SRB Pool.\n");
4281
4282                 goto mem_alloc_error_exit;
4283         }
4284
4285         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
4286                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
4287
4288         if (ha->chap_dma_pool == NULL) {
4289                 ql4_printk(KERN_WARNING, ha,
4290                     "%s: chap_dma_pool allocation failed..\n", __func__);
4291                 goto mem_alloc_error_exit;
4292         }
4293
4294         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
4295                                               DDB_DMA_BLOCK_SIZE, 8, 0);
4296
4297         if (ha->fw_ddb_dma_pool == NULL) {
4298                 ql4_printk(KERN_WARNING, ha,
4299                            "%s: fw_ddb_dma_pool allocation failed..\n",
4300                            __func__);
4301                 goto mem_alloc_error_exit;
4302         }
4303
4304         return QLA_SUCCESS;
4305
4306 mem_alloc_error_exit:
4307         return QLA_ERROR;
4308 }
4309
4310 /**
4311  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
4312  * @ha: adapter block pointer.
4313  *
4314  * Note: The caller should not hold the idc lock.
4315  **/
4316 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
4317 {
4318         uint32_t temp, temp_state, temp_val;
4319         int status = QLA_SUCCESS;
4320
4321         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
4322
4323         temp_state = qla82xx_get_temp_state(temp);
4324         temp_val = qla82xx_get_temp_val(temp);
4325
4326         if (temp_state == QLA82XX_TEMP_PANIC) {
4327                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
4328                            " exceeds maximum allowed. Hardware has been shut"
4329                            " down.\n", temp_val);
4330                 status = QLA_ERROR;
4331         } else if (temp_state == QLA82XX_TEMP_WARN) {
4332                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
4333                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
4334                                    " degrees C exceeds operating range."
4335                                    " Immediate action needed.\n", temp_val);
4336         } else {
4337                 if (ha->temperature == QLA82XX_TEMP_WARN)
4338                         ql4_printk(KERN_INFO, ha, "Device temperature is"
4339                                    " now %d degrees C in normal range.\n",
4340                                    temp_val);
4341         }
4342         ha->temperature = temp_state;
4343         return status;
4344 }
4345
4346 /**
4347  * qla4_8xxx_check_fw_alive  - Check firmware health
4348  * @ha: Pointer to host adapter structure.
4349  *
4350  * Context: Interrupt
4351  **/
4352 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
4353 {
4354         uint32_t fw_heartbeat_counter;
4355         int status = QLA_SUCCESS;
4356
4357         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
4358                                                    QLA8XXX_PEG_ALIVE_COUNTER);
4359         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
4360         if (fw_heartbeat_counter == 0xffffffff) {
4361                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
4362                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
4363                     ha->host_no, __func__));
4364                 return status;
4365         }
4366
4367         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
4368                 ha->seconds_since_last_heartbeat++;
4369                 /* FW not alive after 2 seconds */
4370                 if (ha->seconds_since_last_heartbeat == 2) {
4371                         ha->seconds_since_last_heartbeat = 0;
4372                         qla4_8xxx_dump_peg_reg(ha);
4373                         status = QLA_ERROR;
4374                 }
4375         } else
4376                 ha->seconds_since_last_heartbeat = 0;
4377
4378         ha->fw_heartbeat_counter = fw_heartbeat_counter;
4379         return status;
4380 }
4381
4382 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
4383 {
4384         uint32_t halt_status;
4385         int halt_status_unrecoverable = 0;
4386
4387         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
4388
4389         if (is_qla8022(ha)) {
4390                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4391                            __func__);
4392                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4393                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4394                                 CRB_NIU_XG_PAUSE_CTL_P1);
4395
4396                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
4397                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
4398                                    __func__);
4399                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
4400                         halt_status_unrecoverable = 1;
4401         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4402                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
4403                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
4404                                    __func__);
4405                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
4406                         halt_status_unrecoverable = 1;
4407         }
4408
4409         /*
4410          * Since we cannot change dev_state in interrupt context,
4411          * set appropriate DPC flag then wakeup DPC
4412          */
4413         if (halt_status_unrecoverable) {
4414                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4415         } else {
4416                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
4417                            __func__);
4418                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4419         }
4420         qla4xxx_mailbox_premature_completion(ha);
4421         qla4xxx_wake_dpc(ha);
4422 }
4423
4424 /**
4425  * qla4_8xxx_watchdog - Poll dev state
4426  * @ha: Pointer to host adapter structure.
4427  *
4428  * Context: Interrupt
4429  **/
4430 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
4431 {
4432         uint32_t dev_state;
4433         uint32_t idc_ctrl;
4434
4435         if (is_qla8032(ha) &&
4436             (qla4_83xx_is_detached(ha) == QLA_SUCCESS))
4437                 WARN_ONCE(1, "%s: iSCSI function %d marked invisible\n",
4438                           __func__, ha->func_num);
4439
4440         /* don't poll if reset is going on */
4441         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4442             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4443             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
4444                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
4445
4446                 if (qla4_8xxx_check_temp(ha)) {
4447                         if (is_qla8022(ha)) {
4448                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
4449                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4450                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4451                                                 CRB_NIU_XG_PAUSE_CTL_P1);
4452                         }
4453                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4454                         qla4xxx_wake_dpc(ha);
4455                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
4456                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4457
4458                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
4459                                    __func__);
4460
4461                         if (is_qla8032(ha) || is_qla8042(ha)) {
4462                                 idc_ctrl = qla4_83xx_rd_reg(ha,
4463                                                         QLA83XX_IDC_DRV_CTRL);
4464                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
4465                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
4466                                                    __func__);
4467                                         qla4xxx_mailbox_premature_completion(
4468                                                                             ha);
4469                                 }
4470                         }
4471
4472                         if ((is_qla8032(ha) || is_qla8042(ha)) ||
4473                             (is_qla8022(ha) && !ql4xdontresethba)) {
4474                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4475                                 qla4xxx_wake_dpc(ha);
4476                         }
4477                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
4478                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4479                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
4480                             __func__);
4481                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
4482                         qla4xxx_wake_dpc(ha);
4483                 } else  {
4484                         /* Check firmware health */
4485                         if (qla4_8xxx_check_fw_alive(ha))
4486                                 qla4_8xxx_process_fw_error(ha);
4487                 }
4488         }
4489 }
4490
4491 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
4492 {
4493         struct iscsi_session *sess;
4494         struct ddb_entry *ddb_entry;
4495         struct scsi_qla_host *ha;
4496
4497         sess = cls_sess->dd_data;
4498         ddb_entry = sess->dd_data;
4499         ha = ddb_entry->ha;
4500
4501         if (!(ddb_entry->ddb_type == FLASH_DDB))
4502                 return;
4503
4504         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
4505             !iscsi_is_session_online(cls_sess)) {
4506                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
4507                     INVALID_ENTRY) {
4508                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
4509                                         0) {
4510                                 atomic_set(&ddb_entry->retry_relogin_timer,
4511                                            INVALID_ENTRY);
4512                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4513                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4514                                 DEBUG2(ql4_printk(KERN_INFO, ha,
4515                                        "%s: index [%d] login device\n",
4516                                         __func__, ddb_entry->fw_ddb_index));
4517                         } else
4518                                 atomic_dec(&ddb_entry->retry_relogin_timer);
4519                 }
4520         }
4521
4522         /* Wait for relogin to timeout */
4523         if (atomic_read(&ddb_entry->relogin_timer) &&
4524             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
4525                 /*
4526                  * If the relogin times out and the device is
4527                  * still NOT ONLINE then try and relogin again.
4528                  */
4529                 if (!iscsi_is_session_online(cls_sess)) {
4530                         /* Reset retry relogin timer */
4531                         atomic_inc(&ddb_entry->relogin_retry_count);
4532                         DEBUG2(ql4_printk(KERN_INFO, ha,
4533                                 "%s: index[%d] relogin timed out-retrying"
4534                                 " relogin (%d), retry (%d)\n", __func__,
4535                                 ddb_entry->fw_ddb_index,
4536                                 atomic_read(&ddb_entry->relogin_retry_count),
4537                                 ddb_entry->default_time2wait + 4));
4538                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4539                         atomic_set(&ddb_entry->retry_relogin_timer,
4540                                    ddb_entry->default_time2wait + 4);
4541                 }
4542         }
4543 }
4544
4545 /**
4546  * qla4xxx_timer - checks every second for work to do.
4547  * @t: Context to obtain pointer to host adapter structure.
4548  **/
4549 static void qla4xxx_timer(struct timer_list *t)
4550 {
4551         struct scsi_qla_host *ha = from_timer(ha, t, timer);
4552         int start_dpc = 0;
4553         uint16_t w;
4554
4555         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
4556
4557         /* If we are in the middle of AER/EEH processing
4558          * skip any processing and reschedule the timer
4559          */
4560         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4561                 mod_timer(&ha->timer, jiffies + HZ);
4562                 return;
4563         }
4564
4565         /* Hardware read to trigger an EEH error during mailbox waits. */
4566         if (!pci_channel_offline(ha->pdev))
4567                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
4568
4569         if (is_qla80XX(ha))
4570                 qla4_8xxx_watchdog(ha);
4571
4572         if (is_qla40XX(ha)) {
4573                 /* Check for heartbeat interval. */
4574                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
4575                     ha->heartbeat_interval != 0) {
4576                         ha->seconds_since_last_heartbeat++;
4577                         if (ha->seconds_since_last_heartbeat >
4578                             ha->heartbeat_interval + 2)
4579                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4580                 }
4581         }
4582
4583         /* Process any deferred work. */
4584         if (!list_empty(&ha->work_list))
4585                 start_dpc++;
4586
4587         /* Wakeup the dpc routine for this adapter, if needed. */
4588         if (start_dpc ||
4589              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4590              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
4591              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
4592              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4593              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4594              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
4595              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
4596              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4597              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4598              test_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags) ||
4599              test_bit(DPC_AEN, &ha->dpc_flags)) {
4600                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
4601                               " - dpc flags = 0x%lx\n",
4602                               ha->host_no, __func__, ha->dpc_flags));
4603                 qla4xxx_wake_dpc(ha);
4604         }
4605
4606         /* Reschedule timer thread to call us back in one second */
4607         mod_timer(&ha->timer, jiffies + HZ);
4608
4609         DEBUG2(ha->seconds_since_last_intr++);
4610 }
4611
4612 /**
4613  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
4614  * @ha: Pointer to host adapter structure.
4615  *
4616  * This routine stalls the driver until all outstanding commands are returned.
4617  * Caller must release the Hardware Lock prior to calling this routine.
4618  **/
4619 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
4620 {
4621         uint32_t index = 0;
4622         unsigned long flags;
4623         struct scsi_cmnd *cmd;
4624         unsigned long wtime;
4625         uint32_t wtmo;
4626
4627         if (is_qla40XX(ha))
4628                 wtmo = WAIT_CMD_TOV;
4629         else
4630                 wtmo = ha->nx_reset_timeout / 2;
4631
4632         wtime = jiffies + (wtmo * HZ);
4633
4634         DEBUG2(ql4_printk(KERN_INFO, ha,
4635                           "Wait up to %u seconds for cmds to complete\n",
4636                           wtmo));
4637
4638         while (!time_after_eq(jiffies, wtime)) {
4639                 spin_lock_irqsave(&ha->hardware_lock, flags);
4640                 /* Find a command that hasn't completed. */
4641                 for (index = 0; index < ha->host->can_queue; index++) {
4642                         cmd = scsi_host_find_tag(ha->host, index);
4643                         /*
4644                          * We cannot just check if the index is valid,
4645                          * becase if we are run from the scsi eh, then
4646                          * the scsi/block layer is going to prevent
4647                          * the tag from being released.
4648                          */
4649                         if (cmd != NULL && CMD_SP(cmd))
4650                                 break;
4651                 }
4652                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4653
4654                 /* If No Commands are pending, wait is complete */
4655                 if (index == ha->host->can_queue)
4656                         return QLA_SUCCESS;
4657
4658                 msleep(1000);
4659         }
4660         /* If we timed out on waiting for commands to come back
4661          * return ERROR. */
4662         return QLA_ERROR;
4663 }
4664
4665 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
4666 {
4667         uint32_t ctrl_status;
4668         unsigned long flags = 0;
4669
4670         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
4671
4672         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
4673                 return QLA_ERROR;
4674
4675         spin_lock_irqsave(&ha->hardware_lock, flags);
4676
4677         /*
4678          * If the SCSI Reset Interrupt bit is set, clear it.
4679          * Otherwise, the Soft Reset won't work.
4680          */
4681         ctrl_status = readw(&ha->reg->ctrl_status);
4682         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
4683                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4684
4685         /* Issue Soft Reset */
4686         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
4687         readl(&ha->reg->ctrl_status);
4688
4689         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4690         return QLA_SUCCESS;
4691 }
4692
4693 /**
4694  * qla4xxx_soft_reset - performs soft reset.
4695  * @ha: Pointer to host adapter structure.
4696  **/
4697 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
4698 {
4699         uint32_t max_wait_time;
4700         unsigned long flags = 0;
4701         int status;
4702         uint32_t ctrl_status;
4703
4704         status = qla4xxx_hw_reset(ha);
4705         if (status != QLA_SUCCESS)
4706                 return status;
4707
4708         status = QLA_ERROR;
4709         /* Wait until the Network Reset Intr bit is cleared */
4710         max_wait_time = RESET_INTR_TOV;
4711         do {
4712                 spin_lock_irqsave(&ha->hardware_lock, flags);
4713                 ctrl_status = readw(&ha->reg->ctrl_status);
4714                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4715
4716                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
4717                         break;
4718
4719                 msleep(1000);
4720         } while ((--max_wait_time));
4721
4722         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
4723                 DEBUG2(printk(KERN_WARNING
4724                               "scsi%ld: Network Reset Intr not cleared by "
4725                               "Network function, clearing it now!\n",
4726                               ha->host_no));
4727                 spin_lock_irqsave(&ha->hardware_lock, flags);
4728                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
4729                 readl(&ha->reg->ctrl_status);
4730                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4731         }
4732
4733         /* Wait until the firmware tells us the Soft Reset is done */
4734         max_wait_time = SOFT_RESET_TOV;
4735         do {
4736                 spin_lock_irqsave(&ha->hardware_lock, flags);
4737                 ctrl_status = readw(&ha->reg->ctrl_status);
4738                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4739
4740                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
4741                         status = QLA_SUCCESS;
4742                         break;
4743                 }
4744
4745                 msleep(1000);
4746         } while ((--max_wait_time));
4747
4748         /*
4749          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
4750          * after the soft reset has taken place.
4751          */
4752         spin_lock_irqsave(&ha->hardware_lock, flags);
4753         ctrl_status = readw(&ha->reg->ctrl_status);
4754         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
4755                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4756                 readl(&ha->reg->ctrl_status);
4757         }
4758         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4759
4760         /* If soft reset fails then most probably the bios on other
4761          * function is also enabled.
4762          * Since the initialization is sequential the other fn
4763          * wont be able to acknowledge the soft reset.
4764          * Issue a force soft reset to workaround this scenario.
4765          */
4766         if (max_wait_time == 0) {
4767                 /* Issue Force Soft Reset */
4768                 spin_lock_irqsave(&ha->hardware_lock, flags);
4769                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
4770                 readl(&ha->reg->ctrl_status);
4771                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4772                 /* Wait until the firmware tells us the Soft Reset is done */
4773                 max_wait_time = SOFT_RESET_TOV;
4774                 do {
4775                         spin_lock_irqsave(&ha->hardware_lock, flags);
4776                         ctrl_status = readw(&ha->reg->ctrl_status);
4777                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4778
4779                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
4780                                 status = QLA_SUCCESS;
4781                                 break;
4782                         }
4783
4784                         msleep(1000);
4785                 } while ((--max_wait_time));
4786         }
4787
4788         return status;
4789 }
4790
4791 /**
4792  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
4793  * @ha: Pointer to host adapter structure.
4794  * @res: returned scsi status
4795  *
4796  * This routine is called just prior to a HARD RESET to return all
4797  * outstanding commands back to the Operating System.
4798  * Caller should make sure that the following locks are released
4799  * before this calling routine: Hardware lock, and io_request_lock.
4800  **/
4801 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
4802 {
4803         struct srb *srb;
4804         int i;
4805         unsigned long flags;
4806
4807         spin_lock_irqsave(&ha->hardware_lock, flags);
4808         for (i = 0; i < ha->host->can_queue; i++) {
4809                 srb = qla4xxx_del_from_active_array(ha, i);
4810                 if (srb != NULL) {
4811                         srb->cmd->result = res;
4812                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4813                 }
4814         }
4815         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4816 }
4817
4818 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
4819 {
4820         clear_bit(AF_ONLINE, &ha->flags);
4821
4822         /* Disable the board */
4823         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
4824
4825         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
4826         qla4xxx_mark_all_devices_missing(ha);
4827         clear_bit(AF_INIT_DONE, &ha->flags);
4828 }
4829
4830 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
4831 {
4832         struct iscsi_session *sess;
4833         struct ddb_entry *ddb_entry;
4834
4835         sess = cls_session->dd_data;
4836         ddb_entry = sess->dd_data;
4837         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
4838
4839         if (ddb_entry->ddb_type == FLASH_DDB)
4840                 iscsi_block_session(ddb_entry->sess);
4841         else
4842                 iscsi_session_failure(cls_session->dd_data,
4843                                       ISCSI_ERR_CONN_FAILED);
4844 }
4845
4846 /**
4847  * qla4xxx_recover_adapter - recovers adapter after a fatal error
4848  * @ha: Pointer to host adapter structure.
4849  **/
4850 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
4851 {
4852         int status = QLA_ERROR;
4853         uint8_t reset_chip = 0;
4854         uint32_t dev_state;
4855         unsigned long wait;
4856
4857         /* Stall incoming I/O until we are done */
4858         scsi_block_requests(ha->host);
4859         clear_bit(AF_ONLINE, &ha->flags);
4860         clear_bit(AF_LINK_UP, &ha->flags);
4861
4862         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
4863
4864         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4865
4866         if ((is_qla8032(ha) || is_qla8042(ha)) &&
4867             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4868                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4869                            __func__);
4870                 /* disable pause frame for ISP83xx */
4871                 qla4_83xx_disable_pause(ha);
4872         }
4873
4874         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
4875
4876         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
4877                 reset_chip = 1;
4878
4879         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
4880          * do not reset adapter, jump to initialize_adapter */
4881         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4882                 status = QLA_SUCCESS;
4883                 goto recover_ha_init_adapter;
4884         }
4885
4886         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
4887          * from eh_host_reset or ioctl module */
4888         if (is_qla80XX(ha) && !reset_chip &&
4889             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4890
4891                 DEBUG2(ql4_printk(KERN_INFO, ha,
4892                     "scsi%ld: %s - Performing stop_firmware...\n",
4893                     ha->host_no, __func__));
4894                 status = ha->isp_ops->reset_firmware(ha);
4895                 if (status == QLA_SUCCESS) {
4896                         ha->isp_ops->disable_intrs(ha);
4897                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4898                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4899                 } else {
4900                         /* If the stop_firmware fails then
4901                          * reset the entire chip */
4902                         reset_chip = 1;
4903                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4904                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
4905                 }
4906         }
4907
4908         /* Issue full chip reset if recovering from a catastrophic error,
4909          * or if stop_firmware fails for ISP-8xxx.
4910          * This is the default case for ISP-4xxx */
4911         if (is_qla40XX(ha) || reset_chip) {
4912                 if (is_qla40XX(ha))
4913                         goto chip_reset;
4914
4915                 /* Check if 8XXX firmware is alive or not
4916                  * We may have arrived here from NEED_RESET
4917                  * detection only */
4918                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
4919                         goto chip_reset;
4920
4921                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
4922                 while (time_before(jiffies, wait)) {
4923                         if (qla4_8xxx_check_fw_alive(ha)) {
4924                                 qla4xxx_mailbox_premature_completion(ha);
4925                                 break;
4926                         }
4927
4928                         set_current_state(TASK_UNINTERRUPTIBLE);
4929                         schedule_timeout(HZ);
4930                 }
4931 chip_reset:
4932                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
4933                         qla4xxx_cmd_wait(ha);
4934
4935                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4936                 DEBUG2(ql4_printk(KERN_INFO, ha,
4937                     "scsi%ld: %s - Performing chip reset..\n",
4938                     ha->host_no, __func__));
4939                 status = ha->isp_ops->reset_chip(ha);
4940                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4941         }
4942
4943         /* Flush any pending ddb changed AENs */
4944         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4945
4946 recover_ha_init_adapter:
4947         /* Upon successful firmware/chip reset, re-initialize the adapter */
4948         if (status == QLA_SUCCESS) {
4949                 /* For ISP-4xxx, force function 1 to always initialize
4950                  * before function 3 to prevent both funcions from
4951                  * stepping on top of the other */
4952                 if (is_qla40XX(ha) && (ha->mac_index == 3))
4953                         ssleep(6);
4954
4955                 /* NOTE: AF_ONLINE flag set upon successful completion of
4956                  * qla4xxx_initialize_adapter */
4957                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
4958                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
4959                         status = qla4_8xxx_check_init_adapter_retry(ha);
4960                         if (status == QLA_ERROR) {
4961                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Don't retry recover adapter\n",
4962                                            ha->host_no, __func__);
4963                                 qla4xxx_dead_adapter_cleanup(ha);
4964                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4965                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4966                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4967                                           &ha->dpc_flags);
4968                                 goto exit_recover;
4969                         }
4970                 }
4971         }
4972
4973         /* Retry failed adapter initialization, if necessary
4974          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
4975          * case to prevent ping-pong resets between functions */
4976         if (!test_bit(AF_ONLINE, &ha->flags) &&
4977             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4978                 /* Adapter initialization failed, see if we can retry
4979                  * resetting the ha.
4980                  * Since we don't want to block the DPC for too long
4981                  * with multiple resets in the same thread,
4982                  * utilize DPC to retry */
4983                 if (is_qla80XX(ha)) {
4984                         ha->isp_ops->idc_lock(ha);
4985                         dev_state = qla4_8xxx_rd_direct(ha,
4986                                                         QLA8XXX_CRB_DEV_STATE);
4987                         ha->isp_ops->idc_unlock(ha);
4988                         if (dev_state == QLA8XXX_DEV_FAILED) {
4989                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
4990                                            "recover adapter. H/W is in Failed "
4991                                            "state\n", __func__);
4992                                 qla4xxx_dead_adapter_cleanup(ha);
4993                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4994                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4995                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4996                                                 &ha->dpc_flags);
4997                                 status = QLA_ERROR;
4998
4999                                 goto exit_recover;
5000                         }
5001                 }
5002
5003                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
5004                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
5005                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
5006                                       "(%d) more times\n", ha->host_no,
5007                                       ha->retry_reset_ha_cnt));
5008                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5009                         status = QLA_ERROR;
5010                 } else {
5011                         if (ha->retry_reset_ha_cnt > 0) {
5012                                 /* Schedule another Reset HA--DPC will retry */
5013                                 ha->retry_reset_ha_cnt--;
5014                                 DEBUG2(printk("scsi%ld: recover adapter - "
5015                                               "retry remaining %d\n",
5016                                               ha->host_no,
5017                                               ha->retry_reset_ha_cnt));
5018                                 status = QLA_ERROR;
5019                         }
5020
5021                         if (ha->retry_reset_ha_cnt == 0) {
5022                                 /* Recover adapter retries have been exhausted.
5023                                  * Adapter DEAD */
5024                                 DEBUG2(printk("scsi%ld: recover adapter "
5025                                               "failed - board disabled\n",
5026                                               ha->host_no));
5027                                 qla4xxx_dead_adapter_cleanup(ha);
5028                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5029                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5030                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
5031                                           &ha->dpc_flags);
5032                                 status = QLA_ERROR;
5033                         }
5034                 }
5035         } else {
5036                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5037                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5038                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5039         }
5040
5041 exit_recover:
5042         ha->adapter_error_count++;
5043
5044         if (test_bit(AF_ONLINE, &ha->flags))
5045                 ha->isp_ops->enable_intrs(ha);
5046
5047         scsi_unblock_requests(ha->host);
5048
5049         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5050         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
5051             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
5052
5053         return status;
5054 }
5055
5056 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
5057 {
5058         struct iscsi_session *sess;
5059         struct ddb_entry *ddb_entry;
5060         struct scsi_qla_host *ha;
5061
5062         sess = cls_session->dd_data;
5063         ddb_entry = sess->dd_data;
5064         ha = ddb_entry->ha;
5065         if (!iscsi_is_session_online(cls_session)) {
5066                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
5067                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5068                                    " unblock session\n", ha->host_no, __func__,
5069                                    ddb_entry->fw_ddb_index);
5070                         iscsi_unblock_session(ddb_entry->sess);
5071                 } else {
5072                         /* Trigger relogin */
5073                         if (ddb_entry->ddb_type == FLASH_DDB) {
5074                                 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
5075                                       test_bit(DF_DISABLE_RELOGIN,
5076                                                &ddb_entry->flags)))
5077                                         qla4xxx_arm_relogin_timer(ddb_entry);
5078                         } else
5079                                 iscsi_session_failure(cls_session->dd_data,
5080                                                       ISCSI_ERR_CONN_FAILED);
5081                 }
5082         }
5083 }
5084
5085 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
5086 {
5087         struct iscsi_session *sess;
5088         struct ddb_entry *ddb_entry;
5089         struct scsi_qla_host *ha;
5090
5091         sess = cls_session->dd_data;
5092         ddb_entry = sess->dd_data;
5093         ha = ddb_entry->ha;
5094         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5095                    " unblock session\n", ha->host_no, __func__,
5096                    ddb_entry->fw_ddb_index);
5097
5098         iscsi_unblock_session(ddb_entry->sess);
5099
5100         /* Start scan target */
5101         if (test_bit(AF_ONLINE, &ha->flags)) {
5102                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5103                            " start scan\n", ha->host_no, __func__,
5104                            ddb_entry->fw_ddb_index);
5105                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
5106         }
5107         return QLA_SUCCESS;
5108 }
5109
5110 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
5111 {
5112         struct iscsi_session *sess;
5113         struct ddb_entry *ddb_entry;
5114         struct scsi_qla_host *ha;
5115         int status = QLA_SUCCESS;
5116
5117         sess = cls_session->dd_data;
5118         ddb_entry = sess->dd_data;
5119         ha = ddb_entry->ha;
5120         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5121                    " unblock user space session\n", ha->host_no, __func__,
5122                    ddb_entry->fw_ddb_index);
5123
5124         if (!iscsi_is_session_online(cls_session)) {
5125                 iscsi_conn_start(ddb_entry->conn);
5126                 iscsi_conn_login_event(ddb_entry->conn,
5127                                        ISCSI_CONN_STATE_LOGGED_IN);
5128         } else {
5129                 ql4_printk(KERN_INFO, ha,
5130                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
5131                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
5132                            cls_session->sid);
5133                 status = QLA_ERROR;
5134         }
5135
5136         return status;
5137 }
5138
5139 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
5140 {
5141         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
5142 }
5143
5144 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
5145 {
5146         uint16_t relogin_timer;
5147         struct iscsi_session *sess;
5148         struct ddb_entry *ddb_entry;
5149         struct scsi_qla_host *ha;
5150
5151         sess = cls_sess->dd_data;
5152         ddb_entry = sess->dd_data;
5153         ha = ddb_entry->ha;
5154
5155         relogin_timer = max(ddb_entry->default_relogin_timeout,
5156                             (uint16_t)RELOGIN_TOV);
5157         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
5158
5159         DEBUG2(ql4_printk(KERN_INFO, ha,
5160                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
5161                           ddb_entry->fw_ddb_index, relogin_timer));
5162
5163         qla4xxx_login_flash_ddb(cls_sess);
5164 }
5165
5166 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
5167 {
5168         struct iscsi_session *sess;
5169         struct ddb_entry *ddb_entry;
5170         struct scsi_qla_host *ha;
5171
5172         sess = cls_sess->dd_data;
5173         ddb_entry = sess->dd_data;
5174         ha = ddb_entry->ha;
5175
5176         if (!(ddb_entry->ddb_type == FLASH_DDB))
5177                 return;
5178
5179         if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
5180                 return;
5181
5182         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
5183             !iscsi_is_session_online(cls_sess)) {
5184                 DEBUG2(ql4_printk(KERN_INFO, ha,
5185                                   "relogin issued\n"));
5186                 qla4xxx_relogin_flash_ddb(cls_sess);
5187         }
5188 }
5189
5190 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
5191 {
5192         if (ha->dpc_thread)
5193                 queue_work(ha->dpc_thread, &ha->dpc_work);
5194 }
5195
5196 static struct qla4_work_evt *
5197 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
5198                    enum qla4_work_type type)
5199 {
5200         struct qla4_work_evt *e;
5201         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
5202
5203         e = kzalloc(size, GFP_ATOMIC);
5204         if (!e)
5205                 return NULL;
5206
5207         INIT_LIST_HEAD(&e->list);
5208         e->type = type;
5209         return e;
5210 }
5211
5212 static void qla4xxx_post_work(struct scsi_qla_host *ha,
5213                              struct qla4_work_evt *e)
5214 {
5215         unsigned long flags;
5216
5217         spin_lock_irqsave(&ha->work_lock, flags);
5218         list_add_tail(&e->list, &ha->work_list);
5219         spin_unlock_irqrestore(&ha->work_lock, flags);
5220         qla4xxx_wake_dpc(ha);
5221 }
5222
5223 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
5224                           enum iscsi_host_event_code aen_code,
5225                           uint32_t data_size, uint8_t *data)
5226 {
5227         struct qla4_work_evt *e;
5228
5229         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
5230         if (!e)
5231                 return QLA_ERROR;
5232
5233         e->u.aen.code = aen_code;
5234         e->u.aen.data_size = data_size;
5235         memcpy(e->u.aen.data, data, data_size);
5236
5237         qla4xxx_post_work(ha, e);
5238
5239         return QLA_SUCCESS;
5240 }
5241
5242 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
5243                                uint32_t status, uint32_t pid,
5244                                uint32_t data_size, uint8_t *data)
5245 {
5246         struct qla4_work_evt *e;
5247
5248         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
5249         if (!e)
5250                 return QLA_ERROR;
5251
5252         e->u.ping.status = status;
5253         e->u.ping.pid = pid;
5254         e->u.ping.data_size = data_size;
5255         memcpy(e->u.ping.data, data, data_size);
5256
5257         qla4xxx_post_work(ha, e);
5258
5259         return QLA_SUCCESS;
5260 }
5261
5262 static void qla4xxx_do_work(struct scsi_qla_host *ha)
5263 {
5264         struct qla4_work_evt *e, *tmp;
5265         unsigned long flags;
5266         LIST_HEAD(work);
5267
5268         spin_lock_irqsave(&ha->work_lock, flags);
5269         list_splice_init(&ha->work_list, &work);
5270         spin_unlock_irqrestore(&ha->work_lock, flags);
5271
5272         list_for_each_entry_safe(e, tmp, &work, list) {
5273                 list_del_init(&e->list);
5274
5275                 switch (e->type) {
5276                 case QLA4_EVENT_AEN:
5277                         iscsi_post_host_event(ha->host_no,
5278                                               &qla4xxx_iscsi_transport,
5279                                               e->u.aen.code,
5280                                               e->u.aen.data_size,
5281                                               e->u.aen.data);
5282                         break;
5283                 case QLA4_EVENT_PING_STATUS:
5284                         iscsi_ping_comp_event(ha->host_no,
5285                                               &qla4xxx_iscsi_transport,
5286                                               e->u.ping.status,
5287                                               e->u.ping.pid,
5288                                               e->u.ping.data_size,
5289                                               e->u.ping.data);
5290                         break;
5291                 default:
5292                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
5293                                    "supported", e->type);
5294                 }
5295                 kfree(e);
5296         }
5297 }
5298
5299 /**
5300  * qla4xxx_do_dpc - dpc routine
5301  * @work: Context to obtain pointer to host adapter structure.
5302  *
5303  * This routine is a task that is schedule by the interrupt handler
5304  * to perform the background processing for interrupts.  We put it
5305  * on a task queue that is consumed whenever the scheduler runs; that's
5306  * so you can do anything (i.e. put the process to sleep etc).  In fact,
5307  * the mid-level tries to sleep when it reaches the driver threshold
5308  * "host->can_queue". This can cause a panic if we were in our interrupt code.
5309  **/
5310 static void qla4xxx_do_dpc(struct work_struct *work)
5311 {
5312         struct scsi_qla_host *ha =
5313                 container_of(work, struct scsi_qla_host, dpc_work);
5314         int status = QLA_ERROR;
5315
5316         DEBUG2(ql4_printk(KERN_INFO, ha,
5317                           "scsi%ld: %s: DPC handler waking up. flags = 0x%08lx, dpc_flags = 0x%08lx\n",
5318                           ha->host_no, __func__, ha->flags, ha->dpc_flags));
5319
5320         /* Initialization not yet finished. Don't do anything yet. */
5321         if (!test_bit(AF_INIT_DONE, &ha->flags))
5322                 return;
5323
5324         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
5325                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
5326                     ha->host_no, __func__, ha->flags));
5327                 return;
5328         }
5329
5330         /* post events to application */
5331         qla4xxx_do_work(ha);
5332
5333         if (is_qla80XX(ha)) {
5334                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
5335                         if (is_qla8032(ha) || is_qla8042(ha)) {
5336                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
5337                                            __func__);
5338                                 /* disable pause frame for ISP83xx */
5339                                 qla4_83xx_disable_pause(ha);
5340                         }
5341
5342                         ha->isp_ops->idc_lock(ha);
5343                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5344                                             QLA8XXX_DEV_FAILED);
5345                         ha->isp_ops->idc_unlock(ha);
5346                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
5347                         qla4_8xxx_device_state_handler(ha);
5348                 }
5349
5350                 if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
5351                         if (is_qla8042(ha)) {
5352                                 if (ha->idc_info.info2 &
5353                                     ENABLE_INTERNAL_LOOPBACK) {
5354                                         ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
5355                                                    __func__);
5356                                         status = qla4_84xx_config_acb(ha,
5357                                                             ACB_CONFIG_DISABLE);
5358                                         if (status != QLA_SUCCESS) {
5359                                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
5360                                                            __func__);
5361                                         }
5362                                 }
5363                         }
5364                         qla4_83xx_post_idc_ack(ha);
5365                         clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
5366                 }
5367
5368                 if (is_qla8042(ha) &&
5369                     test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
5370                         ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
5371                                    __func__);
5372                         if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
5373                             QLA_SUCCESS) {
5374                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
5375                                            __func__);
5376                         }
5377                         clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
5378                 }
5379
5380                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
5381                         qla4_8xxx_need_qsnt_handler(ha);
5382                 }
5383         }
5384
5385         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
5386             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
5387             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
5388             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
5389                 if ((is_qla8022(ha) && ql4xdontresethba) ||
5390                     ((is_qla8032(ha) || is_qla8042(ha)) &&
5391                      qla4_83xx_idc_dontreset(ha))) {
5392                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5393                             ha->host_no, __func__));
5394                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5395                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5396                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5397                         goto dpc_post_reset_ha;
5398                 }
5399                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
5400                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
5401                         qla4xxx_recover_adapter(ha);
5402
5403                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
5404                         uint8_t wait_time = RESET_INTR_TOV;
5405
5406                         while ((readw(&ha->reg->ctrl_status) &
5407                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
5408                                 if (--wait_time == 0)
5409                                         break;
5410                                 msleep(1000);
5411                         }
5412                         if (wait_time == 0)
5413                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
5414                                               "bit not cleared-- resetting\n",
5415                                               ha->host_no, __func__));
5416                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5417                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
5418                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5419                                 status = qla4xxx_recover_adapter(ha);
5420                         }
5421                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5422                         if (status == QLA_SUCCESS)
5423                                 ha->isp_ops->enable_intrs(ha);
5424                 }
5425         }
5426
5427 dpc_post_reset_ha:
5428         /* ---- process AEN? --- */
5429         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
5430                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
5431
5432         /* ---- Get DHCP IP Address? --- */
5433         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
5434                 qla4xxx_get_dhcp_ip_address(ha);
5435
5436         /* ---- relogin device? --- */
5437         if (adapter_up(ha) &&
5438             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
5439                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
5440         }
5441
5442         /* ---- link change? --- */
5443         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
5444             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
5445                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
5446                         /* ---- link down? --- */
5447                         qla4xxx_mark_all_devices_missing(ha);
5448                 } else {
5449                         /* ---- link up? --- *
5450                          * F/W will auto login to all devices ONLY ONCE after
5451                          * link up during driver initialization and runtime
5452                          * fatal error recovery.  Therefore, the driver must
5453                          * manually relogin to devices when recovering from
5454                          * connection failures, logouts, expired KATO, etc. */
5455                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
5456                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
5457                                 iscsi_host_for_each_session(ha->host,
5458                                                 qla4xxx_login_flash_ddb);
5459                         } else
5460                                 qla4xxx_relogin_all_devices(ha);
5461                 }
5462         }
5463         if (test_and_clear_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags)) {
5464                 if (qla4xxx_sysfs_ddb_export(ha))
5465                         ql4_printk(KERN_ERR, ha, "%s: Error exporting ddb to sysfs\n",
5466                                    __func__);
5467         }
5468 }
5469
5470 /**
5471  * qla4xxx_free_adapter - release the adapter
5472  * @ha: pointer to adapter structure
5473  **/
5474 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
5475 {
5476         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5477
5478         /* Turn-off interrupts on the card. */
5479         ha->isp_ops->disable_intrs(ha);
5480
5481         if (is_qla40XX(ha)) {
5482                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
5483                        &ha->reg->ctrl_status);
5484                 readl(&ha->reg->ctrl_status);
5485         } else if (is_qla8022(ha)) {
5486                 writel(0, &ha->qla4_82xx_reg->host_int);
5487                 readl(&ha->qla4_82xx_reg->host_int);
5488         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5489                 writel(0, &ha->qla4_83xx_reg->risc_intr);
5490                 readl(&ha->qla4_83xx_reg->risc_intr);
5491         }
5492
5493         /* Remove timer thread, if present */
5494         if (ha->timer_active)
5495                 qla4xxx_stop_timer(ha);
5496
5497         /* Kill the kernel thread for this host */
5498         if (ha->dpc_thread)
5499                 destroy_workqueue(ha->dpc_thread);
5500
5501         /* Kill the kernel thread for this host */
5502         if (ha->task_wq)
5503                 destroy_workqueue(ha->task_wq);
5504
5505         /* Put firmware in known state */
5506         ha->isp_ops->reset_firmware(ha);
5507
5508         if (is_qla80XX(ha)) {
5509                 ha->isp_ops->idc_lock(ha);
5510                 qla4_8xxx_clear_drv_active(ha);
5511                 ha->isp_ops->idc_unlock(ha);
5512         }
5513
5514         /* Detach interrupts */
5515         qla4xxx_free_irqs(ha);
5516
5517         /* free extra memory */
5518         qla4xxx_mem_free(ha);
5519 }
5520
5521 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
5522 {
5523         int status = 0;
5524         unsigned long mem_base, mem_len;
5525         struct pci_dev *pdev = ha->pdev;
5526
5527         status = pci_request_regions(pdev, DRIVER_NAME);
5528         if (status) {
5529                 printk(KERN_WARNING
5530                     "scsi(%ld) Failed to reserve PIO regions (%s) "
5531                     "status=%d\n", ha->host_no, pci_name(pdev), status);
5532                 goto iospace_error_exit;
5533         }
5534
5535         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
5536             __func__, pdev->revision));
5537         ha->revision_id = pdev->revision;
5538
5539         /* remap phys address */
5540         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
5541         mem_len = pci_resource_len(pdev, 0);
5542         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
5543             __func__, mem_base, mem_len));
5544
5545         /* mapping of pcibase pointer */
5546         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
5547         if (!ha->nx_pcibase) {
5548                 printk(KERN_ERR
5549                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
5550                 pci_release_regions(ha->pdev);
5551                 goto iospace_error_exit;
5552         }
5553
5554         /* Mapping of IO base pointer, door bell read and write pointer */
5555
5556         /* mapping of IO base pointer */
5557         if (is_qla8022(ha)) {
5558                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
5559                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
5560                                      (ha->pdev->devfn << 11));
5561                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
5562                                     QLA82XX_CAM_RAM_DB2);
5563         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5564                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
5565                                     ((uint8_t *)ha->nx_pcibase);
5566         }
5567
5568         return 0;
5569 iospace_error_exit:
5570         return -ENOMEM;
5571 }
5572
5573 /***
5574  * qla4xxx_iospace_config - maps registers
5575  * @ha: pointer to adapter structure
5576  *
5577  * This routines maps HBA's registers from the pci address space
5578  * into the kernel virtual address space for memory mapped i/o.
5579  **/
5580 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
5581 {
5582         unsigned long pio, pio_len, pio_flags;
5583         unsigned long mmio, mmio_len, mmio_flags;
5584
5585         pio = pci_resource_start(ha->pdev, 0);
5586         pio_len = pci_resource_len(ha->pdev, 0);
5587         pio_flags = pci_resource_flags(ha->pdev, 0);
5588         if (pio_flags & IORESOURCE_IO) {
5589                 if (pio_len < MIN_IOBASE_LEN) {
5590                         ql4_printk(KERN_WARNING, ha,
5591                                 "Invalid PCI I/O region size\n");
5592                         pio = 0;
5593                 }
5594         } else {
5595                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
5596                 pio = 0;
5597         }
5598
5599         /* Use MMIO operations for all accesses. */
5600         mmio = pci_resource_start(ha->pdev, 1);
5601         mmio_len = pci_resource_len(ha->pdev, 1);
5602         mmio_flags = pci_resource_flags(ha->pdev, 1);
5603
5604         if (!(mmio_flags & IORESOURCE_MEM)) {
5605                 ql4_printk(KERN_ERR, ha,
5606                     "region #0 not an MMIO resource, aborting\n");
5607
5608                 goto iospace_error_exit;
5609         }
5610
5611         if (mmio_len < MIN_IOBASE_LEN) {
5612                 ql4_printk(KERN_ERR, ha,
5613                     "Invalid PCI mem region size, aborting\n");
5614                 goto iospace_error_exit;
5615         }
5616
5617         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
5618                 ql4_printk(KERN_WARNING, ha,
5619                     "Failed to reserve PIO/MMIO regions\n");
5620
5621                 goto iospace_error_exit;
5622         }
5623
5624         ha->pio_address = pio;
5625         ha->pio_length = pio_len;
5626         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
5627         if (!ha->reg) {
5628                 ql4_printk(KERN_ERR, ha,
5629                     "cannot remap MMIO, aborting\n");
5630
5631                 goto iospace_error_exit;
5632         }
5633
5634         return 0;
5635
5636 iospace_error_exit:
5637         return -ENOMEM;
5638 }
5639
5640 static struct isp_operations qla4xxx_isp_ops = {
5641         .iospace_config         = qla4xxx_iospace_config,
5642         .pci_config             = qla4xxx_pci_config,
5643         .disable_intrs          = qla4xxx_disable_intrs,
5644         .enable_intrs           = qla4xxx_enable_intrs,
5645         .start_firmware         = qla4xxx_start_firmware,
5646         .intr_handler           = qla4xxx_intr_handler,
5647         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
5648         .reset_chip             = qla4xxx_soft_reset,
5649         .reset_firmware         = qla4xxx_hw_reset,
5650         .queue_iocb             = qla4xxx_queue_iocb,
5651         .complete_iocb          = qla4xxx_complete_iocb,
5652         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5653         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5654         .get_sys_info           = qla4xxx_get_sys_info,
5655         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
5656         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
5657 };
5658
5659 static struct isp_operations qla4_82xx_isp_ops = {
5660         .iospace_config         = qla4_8xxx_iospace_config,
5661         .pci_config             = qla4_8xxx_pci_config,
5662         .disable_intrs          = qla4_82xx_disable_intrs,
5663         .enable_intrs           = qla4_82xx_enable_intrs,
5664         .start_firmware         = qla4_8xxx_load_risc,
5665         .restart_firmware       = qla4_82xx_try_start_fw,
5666         .intr_handler           = qla4_82xx_intr_handler,
5667         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
5668         .need_reset             = qla4_8xxx_need_reset,
5669         .reset_chip             = qla4_82xx_isp_reset,
5670         .reset_firmware         = qla4_8xxx_stop_firmware,
5671         .queue_iocb             = qla4_82xx_queue_iocb,
5672         .complete_iocb          = qla4_82xx_complete_iocb,
5673         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
5674         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
5675         .get_sys_info           = qla4_8xxx_get_sys_info,
5676         .rd_reg_direct          = qla4_82xx_rd_32,
5677         .wr_reg_direct          = qla4_82xx_wr_32,
5678         .rd_reg_indirect        = qla4_82xx_md_rd_32,
5679         .wr_reg_indirect        = qla4_82xx_md_wr_32,
5680         .idc_lock               = qla4_82xx_idc_lock,
5681         .idc_unlock             = qla4_82xx_idc_unlock,
5682         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
5683         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
5684         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
5685 };
5686
5687 static struct isp_operations qla4_83xx_isp_ops = {
5688         .iospace_config         = qla4_8xxx_iospace_config,
5689         .pci_config             = qla4_8xxx_pci_config,
5690         .disable_intrs          = qla4_83xx_disable_intrs,
5691         .enable_intrs           = qla4_83xx_enable_intrs,
5692         .start_firmware         = qla4_8xxx_load_risc,
5693         .restart_firmware       = qla4_83xx_start_firmware,
5694         .intr_handler           = qla4_83xx_intr_handler,
5695         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
5696         .need_reset             = qla4_8xxx_need_reset,
5697         .reset_chip             = qla4_83xx_isp_reset,
5698         .reset_firmware         = qla4_8xxx_stop_firmware,
5699         .queue_iocb             = qla4_83xx_queue_iocb,
5700         .complete_iocb          = qla4_83xx_complete_iocb,
5701         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5702         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5703         .get_sys_info           = qla4_8xxx_get_sys_info,
5704         .rd_reg_direct          = qla4_83xx_rd_reg,
5705         .wr_reg_direct          = qla4_83xx_wr_reg,
5706         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
5707         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
5708         .idc_lock               = qla4_83xx_drv_lock,
5709         .idc_unlock             = qla4_83xx_drv_unlock,
5710         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
5711         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
5712         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
5713 };
5714
5715 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5716 {
5717         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
5718 }
5719
5720 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5721 {
5722         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
5723 }
5724
5725 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5726 {
5727         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
5728 }
5729
5730 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5731 {
5732         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
5733 }
5734
5735 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
5736 {
5737         struct scsi_qla_host *ha = data;
5738         char *str = buf;
5739         int rc;
5740
5741         switch (type) {
5742         case ISCSI_BOOT_ETH_FLAGS:
5743                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5744                 break;
5745         case ISCSI_BOOT_ETH_INDEX:
5746                 rc = sprintf(str, "0\n");
5747                 break;
5748         case ISCSI_BOOT_ETH_MAC:
5749                 rc = sysfs_format_mac(str, ha->my_mac,
5750                                       MAC_ADDR_LEN);
5751                 break;
5752         default:
5753                 rc = -ENOSYS;
5754                 break;
5755         }
5756         return rc;
5757 }
5758
5759 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
5760 {
5761         int rc;
5762
5763         switch (type) {
5764         case ISCSI_BOOT_ETH_FLAGS:
5765         case ISCSI_BOOT_ETH_MAC:
5766         case ISCSI_BOOT_ETH_INDEX:
5767                 rc = S_IRUGO;
5768                 break;
5769         default:
5770                 rc = 0;
5771                 break;
5772         }
5773         return rc;
5774 }
5775
5776 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
5777 {
5778         struct scsi_qla_host *ha = data;
5779         char *str = buf;
5780         int rc;
5781
5782         switch (type) {
5783         case ISCSI_BOOT_INI_INITIATOR_NAME:
5784                 rc = sprintf(str, "%s\n", ha->name_string);
5785                 break;
5786         default:
5787                 rc = -ENOSYS;
5788                 break;
5789         }
5790         return rc;
5791 }
5792
5793 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
5794 {
5795         int rc;
5796
5797         switch (type) {
5798         case ISCSI_BOOT_INI_INITIATOR_NAME:
5799                 rc = S_IRUGO;
5800                 break;
5801         default:
5802                 rc = 0;
5803                 break;
5804         }
5805         return rc;
5806 }
5807
5808 static ssize_t
5809 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
5810                            char *buf)
5811 {
5812         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
5813         char *str = buf;
5814         int rc;
5815
5816         switch (type) {
5817         case ISCSI_BOOT_TGT_NAME:
5818                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
5819                 break;
5820         case ISCSI_BOOT_TGT_IP_ADDR:
5821                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
5822                         rc = sprintf(buf, "%pI4\n",
5823                                      &boot_conn->dest_ipaddr.ip_address);
5824                 else
5825                         rc = sprintf(str, "%pI6\n",
5826                                      &boot_conn->dest_ipaddr.ip_address);
5827                 break;
5828         case ISCSI_BOOT_TGT_PORT:
5829                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
5830                 break;
5831         case ISCSI_BOOT_TGT_CHAP_NAME:
5832                 rc = sprintf(str,  "%.*s\n",
5833                              boot_conn->chap.target_chap_name_length,
5834                              (char *)&boot_conn->chap.target_chap_name);
5835                 break;
5836         case ISCSI_BOOT_TGT_CHAP_SECRET:
5837                 rc = sprintf(str,  "%.*s\n",
5838                              boot_conn->chap.target_secret_length,
5839                              (char *)&boot_conn->chap.target_secret);
5840                 break;
5841         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5842                 rc = sprintf(str,  "%.*s\n",
5843                              boot_conn->chap.intr_chap_name_length,
5844                              (char *)&boot_conn->chap.intr_chap_name);
5845                 break;
5846         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5847                 rc = sprintf(str,  "%.*s\n",
5848                              boot_conn->chap.intr_secret_length,
5849                              (char *)&boot_conn->chap.intr_secret);
5850                 break;
5851         case ISCSI_BOOT_TGT_FLAGS:
5852                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5853                 break;
5854         case ISCSI_BOOT_TGT_NIC_ASSOC:
5855                 rc = sprintf(str, "0\n");
5856                 break;
5857         default:
5858                 rc = -ENOSYS;
5859                 break;
5860         }
5861         return rc;
5862 }
5863
5864 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
5865 {
5866         struct scsi_qla_host *ha = data;
5867         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
5868
5869         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5870 }
5871
5872 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
5873 {
5874         struct scsi_qla_host *ha = data;
5875         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
5876
5877         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5878 }
5879
5880 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
5881 {
5882         int rc;
5883
5884         switch (type) {
5885         case ISCSI_BOOT_TGT_NAME:
5886         case ISCSI_BOOT_TGT_IP_ADDR:
5887         case ISCSI_BOOT_TGT_PORT:
5888         case ISCSI_BOOT_TGT_CHAP_NAME:
5889         case ISCSI_BOOT_TGT_CHAP_SECRET:
5890         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5891         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5892         case ISCSI_BOOT_TGT_NIC_ASSOC:
5893         case ISCSI_BOOT_TGT_FLAGS:
5894                 rc = S_IRUGO;
5895                 break;
5896         default:
5897                 rc = 0;
5898                 break;
5899         }
5900         return rc;
5901 }
5902
5903 static void qla4xxx_boot_release(void *data)
5904 {
5905         struct scsi_qla_host *ha = data;
5906
5907         scsi_host_put(ha->host);
5908 }
5909
5910 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
5911 {
5912         dma_addr_t buf_dma;
5913         uint32_t addr, pri_addr, sec_addr;
5914         uint32_t offset;
5915         uint16_t func_num;
5916         uint8_t val;
5917         uint8_t *buf = NULL;
5918         size_t size = 13 * sizeof(uint8_t);
5919         int ret = QLA_SUCCESS;
5920
5921         func_num = PCI_FUNC(ha->pdev->devfn);
5922
5923         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
5924                    __func__, ha->pdev->device, func_num);
5925
5926         if (is_qla40XX(ha)) {
5927                 if (func_num == 1) {
5928                         addr = NVRAM_PORT0_BOOT_MODE;
5929                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
5930                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
5931                 } else if (func_num == 3) {
5932                         addr = NVRAM_PORT1_BOOT_MODE;
5933                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
5934                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
5935                 } else {
5936                         ret = QLA_ERROR;
5937                         goto exit_boot_info;
5938                 }
5939
5940                 /* Check Boot Mode */
5941                 val = rd_nvram_byte(ha, addr);
5942                 if (!(val & 0x07)) {
5943                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
5944                                           "options : 0x%x\n", __func__, val));
5945                         ret = QLA_ERROR;
5946                         goto exit_boot_info;
5947                 }
5948
5949                 /* get primary valid target index */
5950                 val = rd_nvram_byte(ha, pri_addr);
5951                 if (val & BIT_7)
5952                         ddb_index[0] = (val & 0x7f);
5953
5954                 /* get secondary valid target index */
5955                 val = rd_nvram_byte(ha, sec_addr);
5956                 if (val & BIT_7)
5957                         ddb_index[1] = (val & 0x7f);
5958                 goto exit_boot_info;
5959         } else if (is_qla80XX(ha)) {
5960                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
5961                                          &buf_dma, GFP_KERNEL);
5962                 if (!buf) {
5963                         DEBUG2(ql4_printk(KERN_ERR, ha,
5964                                           "%s: Unable to allocate dma buffer\n",
5965                                            __func__));
5966                         ret = QLA_ERROR;
5967                         goto exit_boot_info;
5968                 }
5969
5970                 if (ha->port_num == 0)
5971                         offset = BOOT_PARAM_OFFSET_PORT0;
5972                 else if (ha->port_num == 1)
5973                         offset = BOOT_PARAM_OFFSET_PORT1;
5974                 else {
5975                         ret = QLA_ERROR;
5976                         goto exit_boot_info_free;
5977                 }
5978                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
5979                        offset;
5980                 if (qla4xxx_get_flash(ha, buf_dma, addr,
5981                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
5982                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
5983                                           " failed\n", ha->host_no, __func__));
5984                         ret = QLA_ERROR;
5985                         goto exit_boot_info_free;
5986                 }
5987                 /* Check Boot Mode */
5988                 if (!(buf[1] & 0x07)) {
5989                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
5990                                           " : 0x%x\n", buf[1]));
5991                         ret = QLA_ERROR;
5992                         goto exit_boot_info_free;
5993                 }
5994
5995                 /* get primary valid target index */
5996                 if (buf[2] & BIT_7)
5997                         ddb_index[0] = buf[2] & 0x7f;
5998
5999                 /* get secondary valid target index */
6000                 if (buf[11] & BIT_7)
6001                         ddb_index[1] = buf[11] & 0x7f;
6002         } else {
6003                 ret = QLA_ERROR;
6004                 goto exit_boot_info;
6005         }
6006
6007         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
6008                           " target ID %d\n", __func__, ddb_index[0],
6009                           ddb_index[1]));
6010
6011 exit_boot_info_free:
6012         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
6013 exit_boot_info:
6014         ha->pri_ddb_idx = ddb_index[0];
6015         ha->sec_ddb_idx = ddb_index[1];
6016         return ret;
6017 }
6018
6019 /**
6020  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
6021  * @ha: pointer to adapter structure
6022  * @username: CHAP username to be returned
6023  * @password: CHAP password to be returned
6024  *
6025  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
6026  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
6027  * So from the CHAP cache find the first BIDI CHAP entry and set it
6028  * to the boot record in sysfs.
6029  **/
6030 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
6031                             char *password)
6032 {
6033         int i, ret = -EINVAL;
6034         int max_chap_entries = 0;
6035         struct ql4_chap_table *chap_table;
6036
6037         if (is_qla80XX(ha))
6038                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
6039                                                 sizeof(struct ql4_chap_table);
6040         else
6041                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
6042
6043         if (!ha->chap_list) {
6044                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
6045                 return ret;
6046         }
6047
6048         mutex_lock(&ha->chap_sem);
6049         for (i = 0; i < max_chap_entries; i++) {
6050                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
6051                 if (chap_table->cookie !=
6052                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
6053                         continue;
6054                 }
6055
6056                 if (chap_table->flags & BIT_7) /* local */
6057                         continue;
6058
6059                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
6060                         continue;
6061
6062                 strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
6063                 strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
6064                 ret = 0;
6065                 break;
6066         }
6067         mutex_unlock(&ha->chap_sem);
6068
6069         return ret;
6070 }
6071
6072
6073 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
6074                                    struct ql4_boot_session_info *boot_sess,
6075                                    uint16_t ddb_index)
6076 {
6077         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
6078         struct dev_db_entry *fw_ddb_entry;
6079         dma_addr_t fw_ddb_entry_dma;
6080         uint16_t idx;
6081         uint16_t options;
6082         int ret = QLA_SUCCESS;
6083
6084         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6085                                           &fw_ddb_entry_dma, GFP_KERNEL);
6086         if (!fw_ddb_entry) {
6087                 DEBUG2(ql4_printk(KERN_ERR, ha,
6088                                   "%s: Unable to allocate dma buffer.\n",
6089                                   __func__));
6090                 ret = QLA_ERROR;
6091                 return ret;
6092         }
6093
6094         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
6095                                    fw_ddb_entry_dma, ddb_index)) {
6096                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
6097                                   "index [%d]\n", __func__, ddb_index));
6098                 ret = QLA_ERROR;
6099                 goto exit_boot_target;
6100         }
6101
6102         /* Update target name and IP from DDB */
6103         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
6104                min(sizeof(boot_sess->target_name),
6105                    sizeof(fw_ddb_entry->iscsi_name)));
6106
6107         options = le16_to_cpu(fw_ddb_entry->options);
6108         if (options & DDB_OPT_IPV6_DEVICE) {
6109                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6110                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
6111         } else {
6112                 boot_conn->dest_ipaddr.ip_type = 0x1;
6113                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6114                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
6115         }
6116
6117         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
6118
6119         /* update chap information */
6120         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
6121
6122         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
6123
6124                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
6125
6126                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
6127                                        target_chap_name,
6128                                        (char *)&boot_conn->chap.target_secret,
6129                                        idx);
6130                 if (ret) {
6131                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
6132                         ret = QLA_ERROR;
6133                         goto exit_boot_target;
6134                 }
6135
6136                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6137                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6138         }
6139
6140         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
6141
6142                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
6143
6144                 ret = qla4xxx_get_bidi_chap(ha,
6145                                     (char *)&boot_conn->chap.intr_chap_name,
6146                                     (char *)&boot_conn->chap.intr_secret);
6147
6148                 if (ret) {
6149                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
6150                         ret = QLA_ERROR;
6151                         goto exit_boot_target;
6152                 }
6153
6154                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6155                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6156         }
6157
6158 exit_boot_target:
6159         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6160                           fw_ddb_entry, fw_ddb_entry_dma);
6161         return ret;
6162 }
6163
6164 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
6165 {
6166         uint16_t ddb_index[2];
6167         int ret = QLA_ERROR;
6168         int rval;
6169
6170         memset(ddb_index, 0, sizeof(ddb_index));
6171         ddb_index[0] = 0xffff;
6172         ddb_index[1] = 0xffff;
6173         ret = get_fw_boot_info(ha, ddb_index);
6174         if (ret != QLA_SUCCESS) {
6175                 DEBUG2(ql4_printk(KERN_INFO, ha,
6176                                 "%s: No boot target configured.\n", __func__));
6177                 return ret;
6178         }
6179
6180         if (ql4xdisablesysfsboot)
6181                 return QLA_SUCCESS;
6182
6183         if (ddb_index[0] == 0xffff)
6184                 goto sec_target;
6185
6186         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
6187                                       ddb_index[0]);
6188         if (rval != QLA_SUCCESS) {
6189                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
6190                                   "configured\n", __func__));
6191         } else
6192                 ret = QLA_SUCCESS;
6193
6194 sec_target:
6195         if (ddb_index[1] == 0xffff)
6196                 goto exit_get_boot_info;
6197
6198         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
6199                                       ddb_index[1]);
6200         if (rval != QLA_SUCCESS) {
6201                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
6202                                   " configured\n", __func__));
6203         } else
6204                 ret = QLA_SUCCESS;
6205
6206 exit_get_boot_info:
6207         return ret;
6208 }
6209
6210 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
6211 {
6212         struct iscsi_boot_kobj *boot_kobj;
6213
6214         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
6215                 return QLA_ERROR;
6216
6217         if (ql4xdisablesysfsboot) {
6218                 ql4_printk(KERN_INFO, ha,
6219                            "%s: syfsboot disabled - driver will trigger login "
6220                            "and publish session for discovery .\n", __func__);
6221                 return QLA_SUCCESS;
6222         }
6223
6224
6225         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
6226         if (!ha->boot_kset)
6227                 goto kset_free;
6228
6229         if (!scsi_host_get(ha->host))
6230                 goto kset_free;
6231         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
6232                                              qla4xxx_show_boot_tgt_pri_info,
6233                                              qla4xxx_tgt_get_attr_visibility,
6234                                              qla4xxx_boot_release);
6235         if (!boot_kobj)
6236                 goto put_host;
6237
6238         if (!scsi_host_get(ha->host))
6239                 goto kset_free;
6240         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
6241                                              qla4xxx_show_boot_tgt_sec_info,
6242                                              qla4xxx_tgt_get_attr_visibility,
6243                                              qla4xxx_boot_release);
6244         if (!boot_kobj)
6245                 goto put_host;
6246
6247         if (!scsi_host_get(ha->host))
6248                 goto kset_free;
6249         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
6250                                                qla4xxx_show_boot_ini_info,
6251                                                qla4xxx_ini_get_attr_visibility,
6252                                                qla4xxx_boot_release);
6253         if (!boot_kobj)
6254                 goto put_host;
6255
6256         if (!scsi_host_get(ha->host))
6257                 goto kset_free;
6258         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
6259                                                qla4xxx_show_boot_eth_info,
6260                                                qla4xxx_eth_get_attr_visibility,
6261                                                qla4xxx_boot_release);
6262         if (!boot_kobj)
6263                 goto put_host;
6264
6265         return QLA_SUCCESS;
6266
6267 put_host:
6268         scsi_host_put(ha->host);
6269 kset_free:
6270         iscsi_boot_destroy_kset(ha->boot_kset);
6271         return -ENOMEM;
6272 }
6273
6274
6275 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
6276                                   struct ql4_tuple_ddb *tddb)
6277 {
6278         struct iscsi_cls_session *cls_sess;
6279         struct iscsi_cls_conn *cls_conn;
6280         struct iscsi_session *sess;
6281         struct iscsi_conn *conn;
6282
6283         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
6284         cls_sess = ddb_entry->sess;
6285         sess = cls_sess->dd_data;
6286         cls_conn = ddb_entry->conn;
6287         conn = cls_conn->dd_data;
6288
6289         tddb->tpgt = sess->tpgt;
6290         tddb->port = conn->persistent_port;
6291         strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
6292         strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
6293 }
6294
6295 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
6296                                       struct ql4_tuple_ddb *tddb,
6297                                       uint8_t *flash_isid)
6298 {
6299         uint16_t options = 0;
6300
6301         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
6302         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
6303                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
6304
6305         options = le16_to_cpu(fw_ddb_entry->options);
6306         if (options & DDB_OPT_IPV6_DEVICE)
6307                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
6308         else
6309                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
6310
6311         tddb->port = le16_to_cpu(fw_ddb_entry->port);
6312
6313         if (flash_isid == NULL)
6314                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
6315                        sizeof(tddb->isid));
6316         else
6317                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
6318 }
6319
6320 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
6321                                      struct ql4_tuple_ddb *old_tddb,
6322                                      struct ql4_tuple_ddb *new_tddb,
6323                                      uint8_t is_isid_compare)
6324 {
6325         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6326                 return QLA_ERROR;
6327
6328         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
6329                 return QLA_ERROR;
6330
6331         if (old_tddb->port != new_tddb->port)
6332                 return QLA_ERROR;
6333
6334         /* For multi sessions, driver generates the ISID, so do not compare
6335          * ISID in reset path since it would be a comparison between the
6336          * driver generated ISID and firmware generated ISID. This could
6337          * lead to adding duplicated DDBs in the list as driver generated
6338          * ISID would not match firmware generated ISID.
6339          */
6340         if (is_isid_compare) {
6341                 DEBUG2(ql4_printk(KERN_INFO, ha,
6342                         "%s: old ISID [%pmR] New ISID [%pmR]\n",
6343                         __func__, old_tddb->isid, new_tddb->isid));
6344
6345                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6346                            sizeof(old_tddb->isid)))
6347                         return QLA_ERROR;
6348         }
6349
6350         DEBUG2(ql4_printk(KERN_INFO, ha,
6351                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
6352                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
6353                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
6354                           new_tddb->ip_addr, new_tddb->iscsi_name));
6355
6356         return QLA_SUCCESS;
6357 }
6358
6359 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
6360                                      struct dev_db_entry *fw_ddb_entry,
6361                                      uint32_t *index)
6362 {
6363         struct ddb_entry *ddb_entry;
6364         struct ql4_tuple_ddb *fw_tddb = NULL;
6365         struct ql4_tuple_ddb *tmp_tddb = NULL;
6366         int idx;
6367         int ret = QLA_ERROR;
6368
6369         fw_tddb = vzalloc(sizeof(*fw_tddb));
6370         if (!fw_tddb) {
6371                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6372                                   "Memory Allocation failed.\n"));
6373                 ret = QLA_SUCCESS;
6374                 goto exit_check;
6375         }
6376
6377         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6378         if (!tmp_tddb) {
6379                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6380                                   "Memory Allocation failed.\n"));
6381                 ret = QLA_SUCCESS;
6382                 goto exit_check;
6383         }
6384
6385         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6386
6387         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6388                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6389                 if (ddb_entry == NULL)
6390                         continue;
6391
6392                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
6393                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
6394                         ret = QLA_SUCCESS; /* found */
6395                         if (index != NULL)
6396                                 *index = idx;
6397                         goto exit_check;
6398                 }
6399         }
6400
6401 exit_check:
6402         if (fw_tddb)
6403                 vfree(fw_tddb);
6404         if (tmp_tddb)
6405                 vfree(tmp_tddb);
6406         return ret;
6407 }
6408
6409 /**
6410  * qla4xxx_check_existing_isid - check if target with same isid exist
6411  *                               in target list
6412  * @list_nt: list of target
6413  * @isid: isid to check
6414  *
6415  * This routine return QLA_SUCCESS if target with same isid exist
6416  **/
6417 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
6418 {
6419         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
6420         struct dev_db_entry *fw_ddb_entry;
6421
6422         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6423                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
6424
6425                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
6426                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
6427                         return QLA_SUCCESS;
6428                 }
6429         }
6430         return QLA_ERROR;
6431 }
6432
6433 /**
6434  * qla4xxx_update_isid - compare ddbs and updated isid
6435  * @ha: Pointer to host adapter structure.
6436  * @list_nt: list of nt target
6437  * @fw_ddb_entry: firmware ddb entry
6438  *
6439  * This routine update isid if ddbs have same iqn, same isid and
6440  * different IP addr.
6441  * Return QLA_SUCCESS if isid is updated.
6442  **/
6443 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
6444                                struct list_head *list_nt,
6445                                struct dev_db_entry *fw_ddb_entry)
6446 {
6447         uint8_t base_value, i;
6448
6449         base_value = fw_ddb_entry->isid[1] & 0x1f;
6450         for (i = 0; i < 8; i++) {
6451                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
6452                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6453                         break;
6454         }
6455
6456         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6457                 return QLA_ERROR;
6458
6459         return QLA_SUCCESS;
6460 }
6461
6462 /**
6463  * qla4xxx_should_update_isid - check if isid need to update
6464  * @ha: Pointer to host adapter structure.
6465  * @old_tddb: ddb tuple
6466  * @new_tddb: ddb tuple
6467  *
6468  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
6469  * same isid
6470  **/
6471 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
6472                                       struct ql4_tuple_ddb *old_tddb,
6473                                       struct ql4_tuple_ddb *new_tddb)
6474 {
6475         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
6476                 /* Same ip */
6477                 if (old_tddb->port == new_tddb->port)
6478                         return QLA_ERROR;
6479         }
6480
6481         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6482                 /* different iqn */
6483                 return QLA_ERROR;
6484
6485         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6486                    sizeof(old_tddb->isid)))
6487                 /* different isid */
6488                 return QLA_ERROR;
6489
6490         return QLA_SUCCESS;
6491 }
6492
6493 /**
6494  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
6495  * @ha: Pointer to host adapter structure.
6496  * @list_nt: list of nt target.
6497  * @fw_ddb_entry: firmware ddb entry.
6498  *
6499  * This routine check if fw_ddb_entry already exists in list_nt to avoid
6500  * duplicate ddb in list_nt.
6501  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
6502  * Note: This function also update isid of DDB if required.
6503  **/
6504
6505 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
6506                                        struct list_head *list_nt,
6507                                        struct dev_db_entry *fw_ddb_entry)
6508 {
6509         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
6510         struct ql4_tuple_ddb *fw_tddb = NULL;
6511         struct ql4_tuple_ddb *tmp_tddb = NULL;
6512         int rval, ret = QLA_ERROR;
6513
6514         fw_tddb = vzalloc(sizeof(*fw_tddb));
6515         if (!fw_tddb) {
6516                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6517                                   "Memory Allocation failed.\n"));
6518                 ret = QLA_SUCCESS;
6519                 goto exit_check;
6520         }
6521
6522         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6523         if (!tmp_tddb) {
6524                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6525                                   "Memory Allocation failed.\n"));
6526                 ret = QLA_SUCCESS;
6527                 goto exit_check;
6528         }
6529
6530         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6531
6532         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6533                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
6534                                           nt_ddb_idx->flash_isid);
6535                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
6536                 /* found duplicate ddb */
6537                 if (ret == QLA_SUCCESS)
6538                         goto exit_check;
6539         }
6540
6541         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6542                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
6543
6544                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
6545                 if (ret == QLA_SUCCESS) {
6546                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
6547                         if (rval == QLA_SUCCESS)
6548                                 ret = QLA_ERROR;
6549                         else
6550                                 ret = QLA_SUCCESS;
6551
6552                         goto exit_check;
6553                 }
6554         }
6555
6556 exit_check:
6557         if (fw_tddb)
6558                 vfree(fw_tddb);
6559         if (tmp_tddb)
6560                 vfree(tmp_tddb);
6561         return ret;
6562 }
6563
6564 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
6565 {
6566         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6567
6568         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6569                 list_del_init(&ddb_idx->list);
6570                 vfree(ddb_idx);
6571         }
6572 }
6573
6574 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
6575                                         struct dev_db_entry *fw_ddb_entry)
6576 {
6577         struct iscsi_endpoint *ep;
6578         struct sockaddr_in *addr;
6579         struct sockaddr_in6 *addr6;
6580         struct sockaddr *t_addr;
6581         struct sockaddr_storage *dst_addr;
6582         char *ip;
6583
6584         /* TODO: need to destroy on unload iscsi_endpoint*/
6585         dst_addr = vmalloc(sizeof(*dst_addr));
6586         if (!dst_addr)
6587                 return NULL;
6588
6589         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
6590                 t_addr = (struct sockaddr *)dst_addr;
6591                 t_addr->sa_family = AF_INET6;
6592                 addr6 = (struct sockaddr_in6 *)dst_addr;
6593                 ip = (char *)&addr6->sin6_addr;
6594                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
6595                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
6596
6597         } else {
6598                 t_addr = (struct sockaddr *)dst_addr;
6599                 t_addr->sa_family = AF_INET;
6600                 addr = (struct sockaddr_in *)dst_addr;
6601                 ip = (char *)&addr->sin_addr;
6602                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
6603                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
6604         }
6605
6606         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
6607         vfree(dst_addr);
6608         return ep;
6609 }
6610
6611 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
6612 {
6613         if (ql4xdisablesysfsboot)
6614                 return QLA_SUCCESS;
6615         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
6616                 return QLA_ERROR;
6617         return QLA_SUCCESS;
6618 }
6619
6620 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
6621                                           struct ddb_entry *ddb_entry,
6622                                           uint16_t idx)
6623 {
6624         uint16_t def_timeout;
6625
6626         ddb_entry->ddb_type = FLASH_DDB;
6627         ddb_entry->fw_ddb_index = INVALID_ENTRY;
6628         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
6629         ddb_entry->ha = ha;
6630         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
6631         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
6632         ddb_entry->chap_tbl_idx = INVALID_ENTRY;
6633
6634         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6635         atomic_set(&ddb_entry->relogin_timer, 0);
6636         atomic_set(&ddb_entry->relogin_retry_count, 0);
6637         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
6638         ddb_entry->default_relogin_timeout =
6639                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
6640                 def_timeout : LOGIN_TOV;
6641         ddb_entry->default_time2wait =
6642                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
6643
6644         if (ql4xdisablesysfsboot &&
6645             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
6646                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
6647 }
6648
6649 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
6650 {
6651         uint32_t idx = 0;
6652         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
6653         uint32_t sts[MBOX_REG_COUNT];
6654         uint32_t ip_state;
6655         unsigned long wtime;
6656         int ret;
6657
6658         wtime = jiffies + (HZ * IP_CONFIG_TOV);
6659         do {
6660                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
6661                         if (ip_idx[idx] == -1)
6662                                 continue;
6663
6664                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
6665
6666                         if (ret == QLA_ERROR) {
6667                                 ip_idx[idx] = -1;
6668                                 continue;
6669                         }
6670
6671                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
6672
6673                         DEBUG2(ql4_printk(KERN_INFO, ha,
6674                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
6675                                           ip_idx[idx], ip_state));
6676                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
6677                             ip_state == IP_ADDRSTATE_INVALID ||
6678                             ip_state == IP_ADDRSTATE_PREFERRED ||
6679                             ip_state == IP_ADDRSTATE_DEPRICATED ||
6680                             ip_state == IP_ADDRSTATE_DISABLING)
6681                                 ip_idx[idx] = -1;
6682                 }
6683
6684                 /* Break if all IP states checked */
6685                 if ((ip_idx[0] == -1) &&
6686                     (ip_idx[1] == -1) &&
6687                     (ip_idx[2] == -1) &&
6688                     (ip_idx[3] == -1))
6689                         break;
6690                 schedule_timeout_uninterruptible(HZ);
6691         } while (time_after(wtime, jiffies));
6692 }
6693
6694 static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
6695                                   struct dev_db_entry *flash_ddb_entry)
6696 {
6697         uint16_t options = 0;
6698         size_t ip_len = IP_ADDR_LEN;
6699
6700         options = le16_to_cpu(fw_ddb_entry->options);
6701         if (options & DDB_OPT_IPV6_DEVICE)
6702                 ip_len = IPv6_ADDR_LEN;
6703
6704         if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
6705                 return QLA_ERROR;
6706
6707         if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
6708                    sizeof(fw_ddb_entry->isid)))
6709                 return QLA_ERROR;
6710
6711         if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
6712                    sizeof(fw_ddb_entry->port)))
6713                 return QLA_ERROR;
6714
6715         return QLA_SUCCESS;
6716 }
6717
6718 static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
6719                                      struct dev_db_entry *fw_ddb_entry,
6720                                      uint32_t fw_idx, uint32_t *flash_index)
6721 {
6722         struct dev_db_entry *flash_ddb_entry;
6723         dma_addr_t flash_ddb_entry_dma;
6724         uint32_t idx = 0;
6725         int max_ddbs;
6726         int ret = QLA_ERROR, status;
6727
6728         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6729                                      MAX_DEV_DB_ENTRIES;
6730
6731         flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6732                                          &flash_ddb_entry_dma);
6733         if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
6734                 ql4_printk(KERN_ERR, ha, "Out of memory\n");
6735                 goto exit_find_st_idx;
6736         }
6737
6738         status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6739                                           flash_ddb_entry_dma, fw_idx);
6740         if (status == QLA_SUCCESS) {
6741                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6742                 if (status == QLA_SUCCESS) {
6743                         *flash_index = fw_idx;
6744                         ret = QLA_SUCCESS;
6745                         goto exit_find_st_idx;
6746                 }
6747         }
6748
6749         for (idx = 0; idx < max_ddbs; idx++) {
6750                 status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6751                                                   flash_ddb_entry_dma, idx);
6752                 if (status == QLA_ERROR)
6753                         continue;
6754
6755                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6756                 if (status == QLA_SUCCESS) {
6757                         *flash_index = idx;
6758                         ret = QLA_SUCCESS;
6759                         goto exit_find_st_idx;
6760                 }
6761         }
6762
6763         if (idx == max_ddbs)
6764                 ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
6765                            fw_idx);
6766
6767 exit_find_st_idx:
6768         if (flash_ddb_entry)
6769                 dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
6770                               flash_ddb_entry_dma);
6771
6772         return ret;
6773 }
6774
6775 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
6776                                   struct list_head *list_st)
6777 {
6778         struct qla_ddb_index  *st_ddb_idx;
6779         int max_ddbs;
6780         int fw_idx_size;
6781         struct dev_db_entry *fw_ddb_entry;
6782         dma_addr_t fw_ddb_dma;
6783         int ret;
6784         uint32_t idx = 0, next_idx = 0;
6785         uint32_t state = 0, conn_err = 0;
6786         uint32_t flash_index = -1;
6787         uint16_t conn_id = 0;
6788
6789         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6790                                       &fw_ddb_dma);
6791         if (fw_ddb_entry == NULL) {
6792                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6793                 goto exit_st_list;
6794         }
6795
6796         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6797                                      MAX_DEV_DB_ENTRIES;
6798         fw_idx_size = sizeof(struct qla_ddb_index);
6799
6800         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6801                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6802                                               NULL, &next_idx, &state,
6803                                               &conn_err, NULL, &conn_id);
6804                 if (ret == QLA_ERROR)
6805                         break;
6806
6807                 /* Ignore DDB if invalid state (unassigned) */
6808                 if (state == DDB_DS_UNASSIGNED)
6809                         goto continue_next_st;
6810
6811                 /* Check if ST, add to the list_st */
6812                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
6813                         goto continue_next_st;
6814
6815                 st_ddb_idx = vzalloc(fw_idx_size);
6816                 if (!st_ddb_idx)
6817                         break;
6818
6819                 ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
6820                                                 &flash_index);
6821                 if (ret == QLA_ERROR) {
6822                         ql4_printk(KERN_ERR, ha,
6823                                    "No flash entry for ST at idx [%d]\n", idx);
6824                         st_ddb_idx->flash_ddb_idx = idx;
6825                 } else {
6826                         ql4_printk(KERN_INFO, ha,
6827                                    "ST at idx [%d] is stored at flash [%d]\n",
6828                                    idx, flash_index);
6829                         st_ddb_idx->flash_ddb_idx = flash_index;
6830                 }
6831
6832                 st_ddb_idx->fw_ddb_idx = idx;
6833
6834                 list_add_tail(&st_ddb_idx->list, list_st);
6835 continue_next_st:
6836                 if (next_idx == 0)
6837                         break;
6838         }
6839
6840 exit_st_list:
6841         if (fw_ddb_entry)
6842                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6843 }
6844
6845 /**
6846  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
6847  * @ha: pointer to adapter structure
6848  * @list_ddb: List from which failed ddb to be removed
6849  *
6850  * Iterate over the list of DDBs and find and remove DDBs that are either in
6851  * no connection active state or failed state
6852  **/
6853 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
6854                                       struct list_head *list_ddb)
6855 {
6856         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6857         uint32_t next_idx = 0;
6858         uint32_t state = 0, conn_err = 0;
6859         int ret;
6860
6861         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6862                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
6863                                               NULL, 0, NULL, &next_idx, &state,
6864                                               &conn_err, NULL, NULL);
6865                 if (ret == QLA_ERROR)
6866                         continue;
6867
6868                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
6869                     state == DDB_DS_SESSION_FAILED) {
6870                         list_del_init(&ddb_idx->list);
6871                         vfree(ddb_idx);
6872                 }
6873         }
6874 }
6875
6876 static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
6877                                          struct ddb_entry *ddb_entry,
6878                                          struct dev_db_entry *fw_ddb_entry)
6879 {
6880         struct iscsi_cls_session *cls_sess;
6881         struct iscsi_session *sess;
6882         uint32_t max_ddbs = 0;
6883         uint16_t ddb_link = -1;
6884
6885         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6886                                      MAX_DEV_DB_ENTRIES;
6887
6888         cls_sess = ddb_entry->sess;
6889         sess = cls_sess->dd_data;
6890
6891         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6892         if (ddb_link < max_ddbs)
6893                 sess->discovery_parent_idx = ddb_link;
6894         else
6895                 sess->discovery_parent_idx = DDB_NO_LINK;
6896 }
6897
6898 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
6899                                    struct dev_db_entry *fw_ddb_entry,
6900                                    int is_reset, uint16_t idx)
6901 {
6902         struct iscsi_cls_session *cls_sess;
6903         struct iscsi_session *sess;
6904         struct iscsi_cls_conn *cls_conn;
6905         struct iscsi_endpoint *ep;
6906         uint16_t cmds_max = 32;
6907         uint16_t conn_id = 0;
6908         uint32_t initial_cmdsn = 0;
6909         int ret = QLA_SUCCESS;
6910
6911         struct ddb_entry *ddb_entry = NULL;
6912
6913         /* Create session object, with INVALID_ENTRY,
6914          * the targer_id would get set when we issue the login
6915          */
6916         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
6917                                        cmds_max, sizeof(struct ddb_entry),
6918                                        sizeof(struct ql4_task_data),
6919                                        initial_cmdsn, INVALID_ENTRY);
6920         if (!cls_sess) {
6921                 ret = QLA_ERROR;
6922                 goto exit_setup;
6923         }
6924
6925         /*
6926          * so calling module_put function to decrement the
6927          * reference count.
6928          **/
6929         module_put(qla4xxx_iscsi_transport.owner);
6930         sess = cls_sess->dd_data;
6931         ddb_entry = sess->dd_data;
6932         ddb_entry->sess = cls_sess;
6933
6934         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
6935         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
6936                sizeof(struct dev_db_entry));
6937
6938         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
6939
6940         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
6941
6942         if (!cls_conn) {
6943                 ret = QLA_ERROR;
6944                 goto exit_setup;
6945         }
6946
6947         ddb_entry->conn = cls_conn;
6948
6949         /* Setup ep, for displaying attributes in sysfs */
6950         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
6951         if (ep) {
6952                 ep->conn = cls_conn;
6953                 cls_conn->ep = ep;
6954         } else {
6955                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
6956                 ret = QLA_ERROR;
6957                 goto exit_setup;
6958         }
6959
6960         /* Update sess/conn params */
6961         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
6962         qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
6963
6964         if (is_reset == RESET_ADAPTER) {
6965                 iscsi_block_session(cls_sess);
6966                 /* Use the relogin path to discover new devices
6967                  *  by short-circuting the logic of setting
6968                  *  timer to relogin - instead set the flags
6969                  *  to initiate login right away.
6970                  */
6971                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
6972                 set_bit(DF_RELOGIN, &ddb_entry->flags);
6973         }
6974
6975 exit_setup:
6976         return ret;
6977 }
6978
6979 static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
6980                                        struct list_head *list_ddb,
6981                                        struct dev_db_entry *fw_ddb_entry)
6982 {
6983         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6984         uint16_t ddb_link;
6985
6986         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6987
6988         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6989                 if (ddb_idx->fw_ddb_idx == ddb_link) {
6990                         DEBUG2(ql4_printk(KERN_INFO, ha,
6991                                           "Updating NT parent idx from [%d] to [%d]\n",
6992                                           ddb_link, ddb_idx->flash_ddb_idx));
6993                         fw_ddb_entry->ddb_link =
6994                                             cpu_to_le16(ddb_idx->flash_ddb_idx);
6995                         return;
6996                 }
6997         }
6998 }
6999
7000 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
7001                                   struct list_head *list_nt,
7002                                   struct list_head *list_st,
7003                                   int is_reset)
7004 {
7005         struct dev_db_entry *fw_ddb_entry;
7006         struct ddb_entry *ddb_entry = NULL;
7007         dma_addr_t fw_ddb_dma;
7008         int max_ddbs;
7009         int fw_idx_size;
7010         int ret;
7011         uint32_t idx = 0, next_idx = 0;
7012         uint32_t state = 0, conn_err = 0;
7013         uint32_t ddb_idx = -1;
7014         uint16_t conn_id = 0;
7015         uint16_t ddb_link = -1;
7016         struct qla_ddb_index  *nt_ddb_idx;
7017
7018         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7019                                       &fw_ddb_dma);
7020         if (fw_ddb_entry == NULL) {
7021                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7022                 goto exit_nt_list;
7023         }
7024         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7025                                      MAX_DEV_DB_ENTRIES;
7026         fw_idx_size = sizeof(struct qla_ddb_index);
7027
7028         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7029                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7030                                               NULL, &next_idx, &state,
7031                                               &conn_err, NULL, &conn_id);
7032                 if (ret == QLA_ERROR)
7033                         break;
7034
7035                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
7036                         goto continue_next_nt;
7037
7038                 /* Check if NT, then add to list it */
7039                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
7040                         goto continue_next_nt;
7041
7042                 ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
7043                 if (ddb_link < max_ddbs)
7044                         qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);
7045
7046                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
7047                     state == DDB_DS_SESSION_FAILED) &&
7048                     (is_reset == INIT_ADAPTER))
7049                         goto continue_next_nt;
7050
7051                 DEBUG2(ql4_printk(KERN_INFO, ha,
7052                                   "Adding  DDB to session = 0x%x\n", idx));
7053
7054                 if (is_reset == INIT_ADAPTER) {
7055                         nt_ddb_idx = vmalloc(fw_idx_size);
7056                         if (!nt_ddb_idx)
7057                                 break;
7058
7059                         nt_ddb_idx->fw_ddb_idx = idx;
7060
7061                         /* Copy original isid as it may get updated in function
7062                          * qla4xxx_update_isid(). We need original isid in
7063                          * function qla4xxx_compare_tuple_ddb to find duplicate
7064                          * target */
7065                         memcpy(&nt_ddb_idx->flash_isid[0],
7066                                &fw_ddb_entry->isid[0],
7067                                sizeof(nt_ddb_idx->flash_isid));
7068
7069                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
7070                                                           fw_ddb_entry);
7071                         if (ret == QLA_SUCCESS) {
7072                                 /* free nt_ddb_idx and do not add to list_nt */
7073                                 vfree(nt_ddb_idx);
7074                                 goto continue_next_nt;
7075                         }
7076
7077                         /* Copy updated isid */
7078                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
7079                                sizeof(struct dev_db_entry));
7080
7081                         list_add_tail(&nt_ddb_idx->list, list_nt);
7082                 } else if (is_reset == RESET_ADAPTER) {
7083                         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
7084                                                         &ddb_idx);
7085                         if (ret == QLA_SUCCESS) {
7086                                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
7087                                                                        ddb_idx);
7088                                 if (ddb_entry != NULL)
7089                                         qla4xxx_update_sess_disc_idx(ha,
7090                                                                      ddb_entry,
7091                                                                   fw_ddb_entry);
7092                                 goto continue_next_nt;
7093                         }
7094                 }
7095
7096                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
7097                 if (ret == QLA_ERROR)
7098                         goto exit_nt_list;
7099
7100 continue_next_nt:
7101                 if (next_idx == 0)
7102                         break;
7103         }
7104
7105 exit_nt_list:
7106         if (fw_ddb_entry)
7107                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7108 }
7109
7110 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
7111                                       struct list_head *list_nt,
7112                                       uint16_t target_id)
7113 {
7114         struct dev_db_entry *fw_ddb_entry;
7115         dma_addr_t fw_ddb_dma;
7116         int max_ddbs;
7117         int fw_idx_size;
7118         int ret;
7119         uint32_t idx = 0, next_idx = 0;
7120         uint32_t state = 0, conn_err = 0;
7121         uint16_t conn_id = 0;
7122         struct qla_ddb_index  *nt_ddb_idx;
7123
7124         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7125                                       &fw_ddb_dma);
7126         if (fw_ddb_entry == NULL) {
7127                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7128                 goto exit_new_nt_list;
7129         }
7130         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7131                                      MAX_DEV_DB_ENTRIES;
7132         fw_idx_size = sizeof(struct qla_ddb_index);
7133
7134         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7135                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7136                                               NULL, &next_idx, &state,
7137                                               &conn_err, NULL, &conn_id);
7138                 if (ret == QLA_ERROR)
7139                         break;
7140
7141                 /* Check if NT, then add it to list */
7142                 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7143                         goto continue_next_new_nt;
7144
7145                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
7146                         goto continue_next_new_nt;
7147
7148                 DEBUG2(ql4_printk(KERN_INFO, ha,
7149                                   "Adding  DDB to session = 0x%x\n", idx));
7150
7151                 nt_ddb_idx = vmalloc(fw_idx_size);
7152                 if (!nt_ddb_idx)
7153                         break;
7154
7155                 nt_ddb_idx->fw_ddb_idx = idx;
7156
7157                 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7158                 if (ret == QLA_SUCCESS) {
7159                         /* free nt_ddb_idx and do not add to list_nt */
7160                         vfree(nt_ddb_idx);
7161                         goto continue_next_new_nt;
7162                 }
7163
7164                 if (target_id < max_ddbs)
7165                         fw_ddb_entry->ddb_link = cpu_to_le16(target_id);
7166
7167                 list_add_tail(&nt_ddb_idx->list, list_nt);
7168
7169                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7170                                               idx);
7171                 if (ret == QLA_ERROR)
7172                         goto exit_new_nt_list;
7173
7174 continue_next_new_nt:
7175                 if (next_idx == 0)
7176                         break;
7177         }
7178
7179 exit_new_nt_list:
7180         if (fw_ddb_entry)
7181                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7182 }
7183
7184 /**
7185  * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
7186  * @dev: dev associated with the sysfs entry
7187  * @data: pointer to flashnode session object
7188  *
7189  * Returns:
7190  *      1: if flashnode entry is non-persistent
7191  *      0: if flashnode entry is persistent
7192  **/
7193 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
7194 {
7195         struct iscsi_bus_flash_session *fnode_sess;
7196
7197         if (!iscsi_flashnode_bus_match(dev, NULL))
7198                 return 0;
7199
7200         fnode_sess = iscsi_dev_to_flash_session(dev);
7201
7202         return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
7203 }
7204
7205 /**
7206  * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
7207  * @ha: pointer to host
7208  * @fw_ddb_entry: flash ddb data
7209  * @idx: target index
7210  * @user: if set then this call is made from userland else from kernel
7211  *
7212  * Returns:
7213  * On sucess: QLA_SUCCESS
7214  * On failure: QLA_ERROR
7215  *
7216  * This create separate sysfs entries for session and connection attributes of
7217  * the given fw ddb entry.
7218  * If this is invoked as a result of a userspace call then the entry is marked
7219  * as nonpersistent using flash_state field.
7220  **/
7221 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
7222                                         struct dev_db_entry *fw_ddb_entry,
7223                                         uint16_t *idx, int user)
7224 {
7225         struct iscsi_bus_flash_session *fnode_sess = NULL;
7226         struct iscsi_bus_flash_conn *fnode_conn = NULL;
7227         int rc = QLA_ERROR;
7228
7229         fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
7230                                                  &qla4xxx_iscsi_transport, 0);
7231         if (!fnode_sess) {
7232                 ql4_printk(KERN_ERR, ha,
7233                            "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
7234                            __func__, *idx, ha->host_no);
7235                 goto exit_tgt_create;
7236         }
7237
7238         fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
7239                                                  &qla4xxx_iscsi_transport, 0);
7240         if (!fnode_conn) {
7241                 ql4_printk(KERN_ERR, ha,
7242                            "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
7243                            __func__, *idx, ha->host_no);
7244                 goto free_sess;
7245         }
7246
7247         if (user) {
7248                 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
7249         } else {
7250                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7251
7252                 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
7253                         fnode_sess->is_boot_target = 1;
7254                 else
7255                         fnode_sess->is_boot_target = 0;
7256         }
7257
7258         rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
7259                                            fw_ddb_entry);
7260         if (rc)
7261                 goto free_sess;
7262
7263         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7264                    __func__, fnode_sess->dev.kobj.name);
7265
7266         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7267                    __func__, fnode_conn->dev.kobj.name);
7268
7269         return QLA_SUCCESS;
7270
7271 free_sess:
7272         iscsi_destroy_flashnode_sess(fnode_sess);
7273
7274 exit_tgt_create:
7275         return QLA_ERROR;
7276 }
7277
7278 /**
7279  * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
7280  * @shost: pointer to host
7281  * @buf: type of ddb entry (ipv4/ipv6)
7282  * @len: length of buf
7283  *
7284  * This creates new ddb entry in the flash by finding first free index and
7285  * storing default ddb there. And then create sysfs entry for the new ddb entry.
7286  **/
7287 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
7288                                  int len)
7289 {
7290         struct scsi_qla_host *ha = to_qla_host(shost);
7291         struct dev_db_entry *fw_ddb_entry = NULL;
7292         dma_addr_t fw_ddb_entry_dma;
7293         struct device *dev;
7294         uint16_t idx = 0;
7295         uint16_t max_ddbs = 0;
7296         uint32_t options = 0;
7297         uint32_t rval = QLA_ERROR;
7298
7299         if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
7300             strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
7301                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
7302                                   __func__));
7303                 goto exit_ddb_add;
7304         }
7305
7306         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
7307                                      MAX_DEV_DB_ENTRIES;
7308
7309         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7310                                           &fw_ddb_entry_dma, GFP_KERNEL);
7311         if (!fw_ddb_entry) {
7312                 DEBUG2(ql4_printk(KERN_ERR, ha,
7313                                   "%s: Unable to allocate dma buffer\n",
7314                                   __func__));
7315                 goto exit_ddb_add;
7316         }
7317
7318         dev = iscsi_find_flashnode_sess(ha->host, NULL,
7319                                         qla4xxx_sysfs_ddb_is_non_persistent);
7320         if (dev) {
7321                 ql4_printk(KERN_ERR, ha,
7322                            "%s: A non-persistent entry %s found\n",
7323                            __func__, dev->kobj.name);
7324                 put_device(dev);
7325                 goto exit_ddb_add;
7326         }
7327
7328         /* Index 0 and 1 are reserved for boot target entries */
7329         for (idx = 2; idx < max_ddbs; idx++) {
7330                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
7331                                              fw_ddb_entry_dma, idx))
7332                         break;
7333         }
7334
7335         if (idx == max_ddbs)
7336                 goto exit_ddb_add;
7337
7338         if (!strncasecmp("ipv6", buf, 4))
7339                 options |= IPV6_DEFAULT_DDB_ENTRY;
7340
7341         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7342         if (rval == QLA_ERROR)
7343                 goto exit_ddb_add;
7344
7345         rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
7346
7347 exit_ddb_add:
7348         if (fw_ddb_entry)
7349                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7350                                   fw_ddb_entry, fw_ddb_entry_dma);
7351         if (rval == QLA_SUCCESS)
7352                 return idx;
7353         else
7354                 return -EIO;
7355 }
7356
7357 /**
7358  * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
7359  * @fnode_sess: pointer to session attrs of flash ddb entry
7360  * @fnode_conn: pointer to connection attrs of flash ddb entry
7361  *
7362  * This writes the contents of target ddb buffer to Flash with a valid cookie
7363  * value in order to make the ddb entry persistent.
7364  **/
7365 static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
7366                                     struct iscsi_bus_flash_conn *fnode_conn)
7367 {
7368         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7369         struct scsi_qla_host *ha = to_qla_host(shost);
7370         uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
7371         struct dev_db_entry *fw_ddb_entry = NULL;
7372         dma_addr_t fw_ddb_entry_dma;
7373         uint32_t options = 0;
7374         int rval = 0;
7375
7376         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7377                                           &fw_ddb_entry_dma, GFP_KERNEL);
7378         if (!fw_ddb_entry) {
7379                 DEBUG2(ql4_printk(KERN_ERR, ha,
7380                                   "%s: Unable to allocate dma buffer\n",
7381                                   __func__));
7382                 rval = -ENOMEM;
7383                 goto exit_ddb_apply;
7384         }
7385
7386         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7387                 options |= IPV6_DEFAULT_DDB_ENTRY;
7388
7389         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7390         if (rval == QLA_ERROR)
7391                 goto exit_ddb_apply;
7392
7393         dev_db_start_offset += (fnode_sess->target_id *
7394                                 sizeof(*fw_ddb_entry));
7395
7396         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7397         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7398
7399         rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
7400                                  sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
7401
7402         if (rval == QLA_SUCCESS) {
7403                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7404                 ql4_printk(KERN_INFO, ha,
7405                            "%s: flash node %u of host %lu written to flash\n",
7406                            __func__, fnode_sess->target_id, ha->host_no);
7407         } else {
7408                 rval = -EIO;
7409                 ql4_printk(KERN_ERR, ha,
7410                            "%s: Error while writing flash node %u of host %lu to flash\n",
7411                            __func__, fnode_sess->target_id, ha->host_no);
7412         }
7413
7414 exit_ddb_apply:
7415         if (fw_ddb_entry)
7416                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7417                                   fw_ddb_entry, fw_ddb_entry_dma);
7418         return rval;
7419 }
7420
7421 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
7422                                            struct dev_db_entry *fw_ddb_entry,
7423                                            uint16_t idx)
7424 {
7425         struct dev_db_entry *ddb_entry = NULL;
7426         dma_addr_t ddb_entry_dma;
7427         unsigned long wtime;
7428         uint32_t mbx_sts = 0;
7429         uint32_t state = 0, conn_err = 0;
7430         uint16_t tmo = 0;
7431         int ret = 0;
7432
7433         ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7434                                        &ddb_entry_dma, GFP_KERNEL);
7435         if (!ddb_entry) {
7436                 DEBUG2(ql4_printk(KERN_ERR, ha,
7437                                   "%s: Unable to allocate dma buffer\n",
7438                                   __func__));
7439                 return QLA_ERROR;
7440         }
7441
7442         memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
7443
7444         ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
7445         if (ret != QLA_SUCCESS) {
7446                 DEBUG2(ql4_printk(KERN_ERR, ha,
7447                                   "%s: Unable to set ddb entry for index %d\n",
7448                                   __func__, idx));
7449                 goto exit_ddb_conn_open;
7450         }
7451
7452         qla4xxx_conn_open(ha, idx);
7453
7454         /* To ensure that sendtargets is done, wait for at least 12 secs */
7455         tmo = ((ha->def_timeout > LOGIN_TOV) &&
7456                (ha->def_timeout < LOGIN_TOV * 10) ?
7457                ha->def_timeout : LOGIN_TOV);
7458
7459         DEBUG2(ql4_printk(KERN_INFO, ha,
7460                           "Default time to wait for login to ddb %d\n", tmo));
7461
7462         wtime = jiffies + (HZ * tmo);
7463         do {
7464                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
7465                                               NULL, &state, &conn_err, NULL,
7466                                               NULL);
7467                 if (ret == QLA_ERROR)
7468                         continue;
7469
7470                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
7471                     state == DDB_DS_SESSION_FAILED)
7472                         break;
7473
7474                 schedule_timeout_uninterruptible(HZ / 10);
7475         } while (time_after(wtime, jiffies));
7476
7477 exit_ddb_conn_open:
7478         if (ddb_entry)
7479                 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7480                                   ddb_entry, ddb_entry_dma);
7481         return ret;
7482 }
7483
7484 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
7485                                 struct dev_db_entry *fw_ddb_entry,
7486                                 uint16_t target_id)
7487 {
7488         struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
7489         struct list_head list_nt;
7490         uint16_t ddb_index;
7491         int ret = 0;
7492
7493         if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
7494                 ql4_printk(KERN_WARNING, ha,
7495                            "%s: A discovery already in progress!\n", __func__);
7496                 return QLA_ERROR;
7497         }
7498
7499         INIT_LIST_HEAD(&list_nt);
7500
7501         set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7502
7503         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
7504         if (ret == QLA_ERROR)
7505                 goto exit_login_st_clr_bit;
7506
7507         ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
7508         if (ret == QLA_ERROR)
7509                 goto exit_login_st;
7510
7511         qla4xxx_build_new_nt_list(ha, &list_nt, target_id);
7512
7513         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
7514                 list_del_init(&ddb_idx->list);
7515                 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
7516                 vfree(ddb_idx);
7517         }
7518
7519 exit_login_st:
7520         if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
7521                 ql4_printk(KERN_ERR, ha,
7522                            "Unable to clear DDB index = 0x%x\n", ddb_index);
7523         }
7524
7525         clear_bit(ddb_index, ha->ddb_idx_map);
7526
7527 exit_login_st_clr_bit:
7528         clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7529         return ret;
7530 }
7531
7532 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
7533                                 struct dev_db_entry *fw_ddb_entry,
7534                                 uint16_t idx)
7535 {
7536         int ret = QLA_ERROR;
7537
7538         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7539         if (ret != QLA_SUCCESS)
7540                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7541                                               idx);
7542         else
7543                 ret = -EPERM;
7544
7545         return ret;
7546 }
7547
7548 /**
7549  * qla4xxx_sysfs_ddb_login - Login to the specified target
7550  * @fnode_sess: pointer to session attrs of flash ddb entry
7551  * @fnode_conn: pointer to connection attrs of flash ddb entry
7552  *
7553  * This logs in to the specified target
7554  **/
7555 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
7556                                    struct iscsi_bus_flash_conn *fnode_conn)
7557 {
7558         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7559         struct scsi_qla_host *ha = to_qla_host(shost);
7560         struct dev_db_entry *fw_ddb_entry = NULL;
7561         dma_addr_t fw_ddb_entry_dma;
7562         uint32_t options = 0;
7563         int ret = 0;
7564
7565         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
7566                 ql4_printk(KERN_ERR, ha,
7567                            "%s: Target info is not persistent\n", __func__);
7568                 ret = -EIO;
7569                 goto exit_ddb_login;
7570         }
7571
7572         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7573                                           &fw_ddb_entry_dma, GFP_KERNEL);
7574         if (!fw_ddb_entry) {
7575                 DEBUG2(ql4_printk(KERN_ERR, ha,
7576                                   "%s: Unable to allocate dma buffer\n",
7577                                   __func__));
7578                 ret = -ENOMEM;
7579                 goto exit_ddb_login;
7580         }
7581
7582         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7583                 options |= IPV6_DEFAULT_DDB_ENTRY;
7584
7585         ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7586         if (ret == QLA_ERROR)
7587                 goto exit_ddb_login;
7588
7589         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7590         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7591
7592         if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7593                 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
7594                                            fnode_sess->target_id);
7595         else
7596                 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
7597                                            fnode_sess->target_id);
7598
7599         if (ret > 0)
7600                 ret = -EIO;
7601
7602 exit_ddb_login:
7603         if (fw_ddb_entry)
7604                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7605                                   fw_ddb_entry, fw_ddb_entry_dma);
7606         return ret;
7607 }
7608
7609 /**
7610  * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
7611  * @cls_sess: pointer to session to be logged out
7612  *
7613  * This performs session log out from the specified target
7614  **/
7615 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
7616 {
7617         struct iscsi_session *sess;
7618         struct ddb_entry *ddb_entry = NULL;
7619         struct scsi_qla_host *ha;
7620         struct dev_db_entry *fw_ddb_entry = NULL;
7621         dma_addr_t fw_ddb_entry_dma;
7622         unsigned long flags;
7623         unsigned long wtime;
7624         uint32_t ddb_state;
7625         int options;
7626         int ret = 0;
7627
7628         sess = cls_sess->dd_data;
7629         ddb_entry = sess->dd_data;
7630         ha = ddb_entry->ha;
7631
7632         if (ddb_entry->ddb_type != FLASH_DDB) {
7633                 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
7634                            __func__);
7635                 ret = -ENXIO;
7636                 goto exit_ddb_logout;
7637         }
7638
7639         if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
7640                 ql4_printk(KERN_ERR, ha,
7641                            "%s: Logout from boot target entry is not permitted.\n",
7642                            __func__);
7643                 ret = -EPERM;
7644                 goto exit_ddb_logout;
7645         }
7646
7647         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7648                                           &fw_ddb_entry_dma, GFP_KERNEL);
7649         if (!fw_ddb_entry) {
7650                 ql4_printk(KERN_ERR, ha,
7651                            "%s: Unable to allocate dma buffer\n", __func__);
7652                 ret = -ENOMEM;
7653                 goto exit_ddb_logout;
7654         }
7655
7656         if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
7657                 goto ddb_logout_init;
7658
7659         ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7660                                       fw_ddb_entry, fw_ddb_entry_dma,
7661                                       NULL, NULL, &ddb_state, NULL,
7662                                       NULL, NULL);
7663         if (ret == QLA_ERROR)
7664                 goto ddb_logout_init;
7665
7666         if (ddb_state == DDB_DS_SESSION_ACTIVE)
7667                 goto ddb_logout_init;
7668
7669         /* wait until next relogin is triggered using DF_RELOGIN and
7670          * clear DF_RELOGIN to avoid invocation of further relogin
7671          */
7672         wtime = jiffies + (HZ * RELOGIN_TOV);
7673         do {
7674                 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
7675                         goto ddb_logout_init;
7676
7677                 schedule_timeout_uninterruptible(HZ);
7678         } while ((time_after(wtime, jiffies)));
7679
7680 ddb_logout_init:
7681         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
7682         atomic_set(&ddb_entry->relogin_timer, 0);
7683
7684         options = LOGOUT_OPTION_CLOSE_SESSION;
7685         qla4xxx_session_logout_ddb(ha, ddb_entry, options);
7686
7687         memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
7688         wtime = jiffies + (HZ * LOGOUT_TOV);
7689         do {
7690                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7691                                               fw_ddb_entry, fw_ddb_entry_dma,
7692                                               NULL, NULL, &ddb_state, NULL,
7693                                               NULL, NULL);
7694                 if (ret == QLA_ERROR)
7695                         goto ddb_logout_clr_sess;
7696
7697                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
7698                     (ddb_state == DDB_DS_SESSION_FAILED))
7699                         goto ddb_logout_clr_sess;
7700
7701                 schedule_timeout_uninterruptible(HZ);
7702         } while ((time_after(wtime, jiffies)));
7703
7704 ddb_logout_clr_sess:
7705         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7706         /*
7707          * we have decremented the reference count of the driver
7708          * when we setup the session to have the driver unload
7709          * to be seamless without actually destroying the
7710          * session
7711          **/
7712         try_module_get(qla4xxx_iscsi_transport.owner);
7713         iscsi_destroy_endpoint(ddb_entry->conn->ep);
7714
7715         spin_lock_irqsave(&ha->hardware_lock, flags);
7716         qla4xxx_free_ddb(ha, ddb_entry);
7717         clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
7718         spin_unlock_irqrestore(&ha->hardware_lock, flags);
7719
7720         iscsi_session_teardown(ddb_entry->sess);
7721
7722         clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
7723         ret = QLA_SUCCESS;
7724
7725 exit_ddb_logout:
7726         if (fw_ddb_entry)
7727                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7728                                   fw_ddb_entry, fw_ddb_entry_dma);
7729         return ret;
7730 }
7731
7732 /**
7733  * qla4xxx_sysfs_ddb_logout - Logout from the specified target
7734  * @fnode_sess: pointer to session attrs of flash ddb entry
7735  * @fnode_conn: pointer to connection attrs of flash ddb entry
7736  *
7737  * This performs log out from the specified target
7738  **/
7739 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
7740                                     struct iscsi_bus_flash_conn *fnode_conn)
7741 {
7742         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7743         struct scsi_qla_host *ha = to_qla_host(shost);
7744         struct ql4_tuple_ddb *flash_tddb = NULL;
7745         struct ql4_tuple_ddb *tmp_tddb = NULL;
7746         struct dev_db_entry *fw_ddb_entry = NULL;
7747         struct ddb_entry *ddb_entry = NULL;
7748         dma_addr_t fw_ddb_dma;
7749         uint32_t next_idx = 0;
7750         uint32_t state = 0, conn_err = 0;
7751         uint16_t conn_id = 0;
7752         int idx, index;
7753         int status, ret = 0;
7754
7755         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7756                                       &fw_ddb_dma);
7757         if (fw_ddb_entry == NULL) {
7758                 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
7759                 ret = -ENOMEM;
7760                 goto exit_ddb_logout;
7761         }
7762
7763         flash_tddb = vzalloc(sizeof(*flash_tddb));
7764         if (!flash_tddb) {
7765                 ql4_printk(KERN_WARNING, ha,
7766                            "%s:Memory Allocation failed.\n", __func__);
7767                 ret = -ENOMEM;
7768                 goto exit_ddb_logout;
7769         }
7770
7771         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
7772         if (!tmp_tddb) {
7773                 ql4_printk(KERN_WARNING, ha,
7774                            "%s:Memory Allocation failed.\n", __func__);
7775                 ret = -ENOMEM;
7776                 goto exit_ddb_logout;
7777         }
7778
7779         if (!fnode_sess->targetname) {
7780                 ql4_printk(KERN_ERR, ha,
7781                            "%s:Cannot logout from SendTarget entry\n",
7782                            __func__);
7783                 ret = -EPERM;
7784                 goto exit_ddb_logout;
7785         }
7786
7787         if (fnode_sess->is_boot_target) {
7788                 ql4_printk(KERN_ERR, ha,
7789                            "%s: Logout from boot target entry is not permitted.\n",
7790                            __func__);
7791                 ret = -EPERM;
7792                 goto exit_ddb_logout;
7793         }
7794
7795         strlcpy(flash_tddb->iscsi_name, fnode_sess->targetname,
7796                 ISCSI_NAME_SIZE);
7797
7798         if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7799                 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
7800         else
7801                 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
7802
7803         flash_tddb->tpgt = fnode_sess->tpgt;
7804         flash_tddb->port = fnode_conn->port;
7805
7806         COPY_ISID(flash_tddb->isid, fnode_sess->isid);
7807
7808         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7809                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7810                 if (ddb_entry == NULL)
7811                         continue;
7812
7813                 if (ddb_entry->ddb_type != FLASH_DDB)
7814                         continue;
7815
7816                 index = ddb_entry->sess->target_id;
7817                 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
7818                                                  fw_ddb_dma, NULL, &next_idx,
7819                                                  &state, &conn_err, NULL,
7820                                                  &conn_id);
7821                 if (status == QLA_ERROR) {
7822                         ret = -ENOMEM;
7823                         break;
7824                 }
7825
7826                 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
7827
7828                 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
7829                                                    true);
7830                 if (status == QLA_SUCCESS) {
7831                         ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
7832                         break;
7833                 }
7834         }
7835
7836         if (idx == MAX_DDB_ENTRIES)
7837                 ret = -ESRCH;
7838
7839 exit_ddb_logout:
7840         if (flash_tddb)
7841                 vfree(flash_tddb);
7842         if (tmp_tddb)
7843                 vfree(tmp_tddb);
7844         if (fw_ddb_entry)
7845                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7846
7847         return ret;
7848 }
7849
7850 static int
7851 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
7852                             int param, char *buf)
7853 {
7854         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7855         struct scsi_qla_host *ha = to_qla_host(shost);
7856         struct iscsi_bus_flash_conn *fnode_conn;
7857         struct ql4_chap_table chap_tbl;
7858         struct device *dev;
7859         int parent_type;
7860         int rc = 0;
7861
7862         dev = iscsi_find_flashnode_conn(fnode_sess);
7863         if (!dev)
7864                 return -EIO;
7865
7866         fnode_conn = iscsi_dev_to_flash_conn(dev);
7867
7868         switch (param) {
7869         case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
7870                 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
7871                 break;
7872         case ISCSI_FLASHNODE_PORTAL_TYPE:
7873                 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
7874                 break;
7875         case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
7876                 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
7877                 break;
7878         case ISCSI_FLASHNODE_DISCOVERY_SESS:
7879                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
7880                 break;
7881         case ISCSI_FLASHNODE_ENTRY_EN:
7882                 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
7883                 break;
7884         case ISCSI_FLASHNODE_HDR_DGST_EN:
7885                 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
7886                 break;
7887         case ISCSI_FLASHNODE_DATA_DGST_EN:
7888                 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
7889                 break;
7890         case ISCSI_FLASHNODE_IMM_DATA_EN:
7891                 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
7892                 break;
7893         case ISCSI_FLASHNODE_INITIAL_R2T_EN:
7894                 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
7895                 break;
7896         case ISCSI_FLASHNODE_DATASEQ_INORDER:
7897                 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
7898                 break;
7899         case ISCSI_FLASHNODE_PDU_INORDER:
7900                 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
7901                 break;
7902         case ISCSI_FLASHNODE_CHAP_AUTH_EN:
7903                 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
7904                 break;
7905         case ISCSI_FLASHNODE_SNACK_REQ_EN:
7906                 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
7907                 break;
7908         case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
7909                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
7910                 break;
7911         case ISCSI_FLASHNODE_BIDI_CHAP_EN:
7912                 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
7913                 break;
7914         case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
7915                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
7916                 break;
7917         case ISCSI_FLASHNODE_ERL:
7918                 rc = sprintf(buf, "%u\n", fnode_sess->erl);
7919                 break;
7920         case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
7921                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
7922                 break;
7923         case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
7924                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
7925                 break;
7926         case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
7927                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
7928                 break;
7929         case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
7930                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
7931                 break;
7932         case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
7933                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
7934                 break;
7935         case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
7936                 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
7937                 break;
7938         case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
7939                 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
7940                 break;
7941         case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
7942                 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
7943                 break;
7944         case ISCSI_FLASHNODE_FIRST_BURST:
7945                 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
7946                 break;
7947         case ISCSI_FLASHNODE_DEF_TIME2WAIT:
7948                 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
7949                 break;
7950         case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
7951                 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
7952                 break;
7953         case ISCSI_FLASHNODE_MAX_R2T:
7954                 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
7955                 break;
7956         case ISCSI_FLASHNODE_KEEPALIVE_TMO:
7957                 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
7958                 break;
7959         case ISCSI_FLASHNODE_ISID:
7960                 rc = sprintf(buf, "%pm\n", fnode_sess->isid);
7961                 break;
7962         case ISCSI_FLASHNODE_TSID:
7963                 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
7964                 break;
7965         case ISCSI_FLASHNODE_PORT:
7966                 rc = sprintf(buf, "%d\n", fnode_conn->port);
7967                 break;
7968         case ISCSI_FLASHNODE_MAX_BURST:
7969                 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
7970                 break;
7971         case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
7972                 rc = sprintf(buf, "%u\n",
7973                              fnode_sess->default_taskmgmt_timeout);
7974                 break;
7975         case ISCSI_FLASHNODE_IPADDR:
7976                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7977                         rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
7978                 else
7979                         rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
7980                 break;
7981         case ISCSI_FLASHNODE_ALIAS:
7982                 if (fnode_sess->targetalias)
7983                         rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
7984                 else
7985                         rc = sprintf(buf, "\n");
7986                 break;
7987         case ISCSI_FLASHNODE_REDIRECT_IPADDR:
7988                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7989                         rc = sprintf(buf, "%pI6\n",
7990                                      fnode_conn->redirect_ipaddr);
7991                 else
7992                         rc = sprintf(buf, "%pI4\n",
7993                                      fnode_conn->redirect_ipaddr);
7994                 break;
7995         case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
7996                 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
7997                 break;
7998         case ISCSI_FLASHNODE_LOCAL_PORT:
7999                 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
8000                 break;
8001         case ISCSI_FLASHNODE_IPV4_TOS:
8002                 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
8003                 break;
8004         case ISCSI_FLASHNODE_IPV6_TC:
8005                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
8006                         rc = sprintf(buf, "%u\n",
8007                                      fnode_conn->ipv6_traffic_class);
8008                 else
8009                         rc = sprintf(buf, "\n");
8010                 break;
8011         case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8012                 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
8013                 break;
8014         case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8015                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
8016                         rc = sprintf(buf, "%pI6\n",
8017                                      fnode_conn->link_local_ipv6_addr);
8018                 else
8019                         rc = sprintf(buf, "\n");
8020                 break;
8021         case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8022                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
8023                 break;
8024         case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
8025                 if (fnode_sess->discovery_parent_type == DDB_ISNS)
8026                         parent_type = ISCSI_DISC_PARENT_ISNS;
8027                 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
8028                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8029                 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
8030                         parent_type = ISCSI_DISC_PARENT_SENDTGT;
8031                 else
8032                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8033
8034                 rc = sprintf(buf, "%s\n",
8035                              iscsi_get_discovery_parent_name(parent_type));
8036                 break;
8037         case ISCSI_FLASHNODE_NAME:
8038                 if (fnode_sess->targetname)
8039                         rc = sprintf(buf, "%s\n", fnode_sess->targetname);
8040                 else
8041                         rc = sprintf(buf, "\n");
8042                 break;
8043         case ISCSI_FLASHNODE_TPGT:
8044                 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
8045                 break;
8046         case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8047                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
8048                 break;
8049         case ISCSI_FLASHNODE_TCP_RECV_WSF:
8050                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
8051                 break;
8052         case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8053                 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
8054                 break;
8055         case ISCSI_FLASHNODE_USERNAME:
8056                 if (fnode_sess->chap_auth_en) {
8057                         qla4xxx_get_uni_chap_at_index(ha,
8058                                                       chap_tbl.name,
8059                                                       chap_tbl.secret,
8060                                                       fnode_sess->chap_out_idx);
8061                         rc = sprintf(buf, "%s\n", chap_tbl.name);
8062                 } else {
8063                         rc = sprintf(buf, "\n");
8064                 }
8065                 break;
8066         case ISCSI_FLASHNODE_PASSWORD:
8067                 if (fnode_sess->chap_auth_en) {
8068                         qla4xxx_get_uni_chap_at_index(ha,
8069                                                       chap_tbl.name,
8070                                                       chap_tbl.secret,
8071                                                       fnode_sess->chap_out_idx);
8072                         rc = sprintf(buf, "%s\n", chap_tbl.secret);
8073                 } else {
8074                         rc = sprintf(buf, "\n");
8075                 }
8076                 break;
8077         case ISCSI_FLASHNODE_STATSN:
8078                 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
8079                 break;
8080         case ISCSI_FLASHNODE_EXP_STATSN:
8081                 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
8082                 break;
8083         case ISCSI_FLASHNODE_IS_BOOT_TGT:
8084                 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
8085                 break;
8086         default:
8087                 rc = -ENOSYS;
8088                 break;
8089         }
8090
8091         put_device(dev);
8092         return rc;
8093 }
8094
8095 /**
8096  * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
8097  * @fnode_sess: pointer to session attrs of flash ddb entry
8098  * @fnode_conn: pointer to connection attrs of flash ddb entry
8099  * @data: Parameters and their values to update
8100  * @len: len of data
8101  *
8102  * This sets the parameter of flash ddb entry and writes them to flash
8103  **/
8104 static int
8105 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
8106                             struct iscsi_bus_flash_conn *fnode_conn,
8107                             void *data, int len)
8108 {
8109         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8110         struct scsi_qla_host *ha = to_qla_host(shost);
8111         struct iscsi_flashnode_param_info *fnode_param;
8112         struct ql4_chap_table chap_tbl;
8113         struct nlattr *attr;
8114         uint16_t chap_out_idx = INVALID_ENTRY;
8115         int rc = QLA_ERROR;
8116         uint32_t rem = len;
8117
8118         memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
8119         nla_for_each_attr(attr, data, len, rem) {
8120                 fnode_param = nla_data(attr);
8121
8122                 switch (fnode_param->param) {
8123                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
8124                         fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
8125                         break;
8126                 case ISCSI_FLASHNODE_PORTAL_TYPE:
8127                         memcpy(fnode_sess->portal_type, fnode_param->value,
8128                                strlen(fnode_sess->portal_type));
8129                         break;
8130                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
8131                         fnode_sess->auto_snd_tgt_disable =
8132                                                         fnode_param->value[0];
8133                         break;
8134                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
8135                         fnode_sess->discovery_sess = fnode_param->value[0];
8136                         break;
8137                 case ISCSI_FLASHNODE_ENTRY_EN:
8138                         fnode_sess->entry_state = fnode_param->value[0];
8139                         break;
8140                 case ISCSI_FLASHNODE_HDR_DGST_EN:
8141                         fnode_conn->hdrdgst_en = fnode_param->value[0];
8142                         break;
8143                 case ISCSI_FLASHNODE_DATA_DGST_EN:
8144                         fnode_conn->datadgst_en = fnode_param->value[0];
8145                         break;
8146                 case ISCSI_FLASHNODE_IMM_DATA_EN:
8147                         fnode_sess->imm_data_en = fnode_param->value[0];
8148                         break;
8149                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
8150                         fnode_sess->initial_r2t_en = fnode_param->value[0];
8151                         break;
8152                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
8153                         fnode_sess->dataseq_inorder_en = fnode_param->value[0];
8154                         break;
8155                 case ISCSI_FLASHNODE_PDU_INORDER:
8156                         fnode_sess->pdu_inorder_en = fnode_param->value[0];
8157                         break;
8158                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
8159                         fnode_sess->chap_auth_en = fnode_param->value[0];
8160                         /* Invalidate chap index if chap auth is disabled */
8161                         if (!fnode_sess->chap_auth_en)
8162                                 fnode_sess->chap_out_idx = INVALID_ENTRY;
8163
8164                         break;
8165                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
8166                         fnode_conn->snack_req_en = fnode_param->value[0];
8167                         break;
8168                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
8169                         fnode_sess->discovery_logout_en = fnode_param->value[0];
8170                         break;
8171                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
8172                         fnode_sess->bidi_chap_en = fnode_param->value[0];
8173                         break;
8174                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
8175                         fnode_sess->discovery_auth_optional =
8176                                                         fnode_param->value[0];
8177                         break;
8178                 case ISCSI_FLASHNODE_ERL:
8179                         fnode_sess->erl = fnode_param->value[0];
8180                         break;
8181                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
8182                         fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
8183                         break;
8184                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
8185                         fnode_conn->tcp_nagle_disable = fnode_param->value[0];
8186                         break;
8187                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
8188                         fnode_conn->tcp_wsf_disable = fnode_param->value[0];
8189                         break;
8190                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
8191                         fnode_conn->tcp_timer_scale = fnode_param->value[0];
8192                         break;
8193                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
8194                         fnode_conn->tcp_timestamp_en = fnode_param->value[0];
8195                         break;
8196                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
8197                         fnode_conn->fragment_disable = fnode_param->value[0];
8198                         break;
8199                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
8200                         fnode_conn->max_recv_dlength =
8201                                         *(unsigned *)fnode_param->value;
8202                         break;
8203                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
8204                         fnode_conn->max_xmit_dlength =
8205                                         *(unsigned *)fnode_param->value;
8206                         break;
8207                 case ISCSI_FLASHNODE_FIRST_BURST:
8208                         fnode_sess->first_burst =
8209                                         *(unsigned *)fnode_param->value;
8210                         break;
8211                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
8212                         fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
8213                         break;
8214                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
8215                         fnode_sess->time2retain =
8216                                                 *(uint16_t *)fnode_param->value;
8217                         break;
8218                 case ISCSI_FLASHNODE_MAX_R2T:
8219                         fnode_sess->max_r2t =
8220                                         *(uint16_t *)fnode_param->value;
8221                         break;
8222                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
8223                         fnode_conn->keepalive_timeout =
8224                                 *(uint16_t *)fnode_param->value;
8225                         break;
8226                 case ISCSI_FLASHNODE_ISID:
8227                         memcpy(fnode_sess->isid, fnode_param->value,
8228                                sizeof(fnode_sess->isid));
8229                         break;
8230                 case ISCSI_FLASHNODE_TSID:
8231                         fnode_sess->tsid = *(uint16_t *)fnode_param->value;
8232                         break;
8233                 case ISCSI_FLASHNODE_PORT:
8234                         fnode_conn->port = *(uint16_t *)fnode_param->value;
8235                         break;
8236                 case ISCSI_FLASHNODE_MAX_BURST:
8237                         fnode_sess->max_burst = *(unsigned *)fnode_param->value;
8238                         break;
8239                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
8240                         fnode_sess->default_taskmgmt_timeout =
8241                                                 *(uint16_t *)fnode_param->value;
8242                         break;
8243                 case ISCSI_FLASHNODE_IPADDR:
8244                         memcpy(fnode_conn->ipaddress, fnode_param->value,
8245                                IPv6_ADDR_LEN);
8246                         break;
8247                 case ISCSI_FLASHNODE_ALIAS:
8248                         rc = iscsi_switch_str_param(&fnode_sess->targetalias,
8249                                                     (char *)fnode_param->value);
8250                         break;
8251                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
8252                         memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
8253                                IPv6_ADDR_LEN);
8254                         break;
8255                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
8256                         fnode_conn->max_segment_size =
8257                                         *(unsigned *)fnode_param->value;
8258                         break;
8259                 case ISCSI_FLASHNODE_LOCAL_PORT:
8260                         fnode_conn->local_port =
8261                                                 *(uint16_t *)fnode_param->value;
8262                         break;
8263                 case ISCSI_FLASHNODE_IPV4_TOS:
8264                         fnode_conn->ipv4_tos = fnode_param->value[0];
8265                         break;
8266                 case ISCSI_FLASHNODE_IPV6_TC:
8267                         fnode_conn->ipv6_traffic_class = fnode_param->value[0];
8268                         break;
8269                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8270                         fnode_conn->ipv6_flow_label = fnode_param->value[0];
8271                         break;
8272                 case ISCSI_FLASHNODE_NAME:
8273                         rc = iscsi_switch_str_param(&fnode_sess->targetname,
8274                                                     (char *)fnode_param->value);
8275                         break;
8276                 case ISCSI_FLASHNODE_TPGT:
8277                         fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
8278                         break;
8279                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8280                         memcpy(fnode_conn->link_local_ipv6_addr,
8281                                fnode_param->value, IPv6_ADDR_LEN);
8282                         break;
8283                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8284                         fnode_sess->discovery_parent_idx =
8285                                                 *(uint16_t *)fnode_param->value;
8286                         break;
8287                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8288                         fnode_conn->tcp_xmit_wsf =
8289                                                 *(uint8_t *)fnode_param->value;
8290                         break;
8291                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
8292                         fnode_conn->tcp_recv_wsf =
8293                                                 *(uint8_t *)fnode_param->value;
8294                         break;
8295                 case ISCSI_FLASHNODE_STATSN:
8296                         fnode_conn->statsn = *(uint32_t *)fnode_param->value;
8297                         break;
8298                 case ISCSI_FLASHNODE_EXP_STATSN:
8299                         fnode_conn->exp_statsn =
8300                                                 *(uint32_t *)fnode_param->value;
8301                         break;
8302                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8303                         chap_out_idx = *(uint16_t *)fnode_param->value;
8304                         if (!qla4xxx_get_uni_chap_at_index(ha,
8305                                                            chap_tbl.name,
8306                                                            chap_tbl.secret,
8307                                                            chap_out_idx)) {
8308                                 fnode_sess->chap_out_idx = chap_out_idx;
8309                                 /* Enable chap auth if chap index is valid */
8310                                 fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
8311                         }
8312                         break;
8313                 default:
8314                         ql4_printk(KERN_ERR, ha,
8315                                    "%s: No such sysfs attribute\n", __func__);
8316                         rc = -ENOSYS;
8317                         goto exit_set_param;
8318                 }
8319         }
8320
8321         rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
8322
8323 exit_set_param:
8324         return rc;
8325 }
8326
8327 /**
8328  * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
8329  * @fnode_sess: pointer to session attrs of flash ddb entry
8330  *
8331  * This invalidates the flash ddb entry at the given index
8332  **/
8333 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
8334 {
8335         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8336         struct scsi_qla_host *ha = to_qla_host(shost);
8337         uint32_t dev_db_start_offset;
8338         uint32_t dev_db_end_offset;
8339         struct dev_db_entry *fw_ddb_entry = NULL;
8340         dma_addr_t fw_ddb_entry_dma;
8341         uint16_t *ddb_cookie = NULL;
8342         size_t ddb_size = 0;
8343         void *pddb = NULL;
8344         int target_id;
8345         int rc = 0;
8346
8347         if (fnode_sess->is_boot_target) {
8348                 rc = -EPERM;
8349                 DEBUG2(ql4_printk(KERN_ERR, ha,
8350                                   "%s: Deletion of boot target entry is not permitted.\n",
8351                                   __func__));
8352                 goto exit_ddb_del;
8353         }
8354
8355         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
8356                 goto sysfs_ddb_del;
8357
8358         if (is_qla40XX(ha)) {
8359                 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
8360                 dev_db_end_offset = FLASH_OFFSET_DB_END;
8361                 dev_db_start_offset += (fnode_sess->target_id *
8362                                        sizeof(*fw_ddb_entry));
8363                 ddb_size = sizeof(*fw_ddb_entry);
8364         } else {
8365                 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
8366                                       (ha->hw.flt_region_ddb << 2);
8367                 /* flt_ddb_size is DDB table size for both ports
8368                  * so divide it by 2 to calculate the offset for second port
8369                  */
8370                 if (ha->port_num == 1)
8371                         dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
8372
8373                 dev_db_end_offset = dev_db_start_offset +
8374                                     (ha->hw.flt_ddb_size / 2);
8375
8376                 dev_db_start_offset += (fnode_sess->target_id *
8377                                        sizeof(*fw_ddb_entry));
8378                 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
8379
8380                 ddb_size = sizeof(*ddb_cookie);
8381         }
8382
8383         DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
8384                           __func__, dev_db_start_offset, dev_db_end_offset));
8385
8386         if (dev_db_start_offset > dev_db_end_offset) {
8387                 rc = -EIO;
8388                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
8389                                   __func__, fnode_sess->target_id));
8390                 goto exit_ddb_del;
8391         }
8392
8393         pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
8394                                   &fw_ddb_entry_dma, GFP_KERNEL);
8395         if (!pddb) {
8396                 rc = -ENOMEM;
8397                 DEBUG2(ql4_printk(KERN_ERR, ha,
8398                                   "%s: Unable to allocate dma buffer\n",
8399                                   __func__));
8400                 goto exit_ddb_del;
8401         }
8402
8403         if (is_qla40XX(ha)) {
8404                 fw_ddb_entry = pddb;
8405                 memset(fw_ddb_entry, 0, ddb_size);
8406                 ddb_cookie = &fw_ddb_entry->cookie;
8407         } else {
8408                 ddb_cookie = pddb;
8409         }
8410
8411         /* invalidate the cookie */
8412         *ddb_cookie = 0xFFEE;
8413         qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
8414                           ddb_size, FLASH_OPT_RMW_COMMIT);
8415
8416 sysfs_ddb_del:
8417         target_id = fnode_sess->target_id;
8418         iscsi_destroy_flashnode_sess(fnode_sess);
8419         ql4_printk(KERN_INFO, ha,
8420                    "%s: session and conn entries for flashnode %u of host %lu deleted\n",
8421                    __func__, target_id, ha->host_no);
8422 exit_ddb_del:
8423         if (pddb)
8424                 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
8425                                   fw_ddb_entry_dma);
8426         return rc;
8427 }
8428
8429 /**
8430  * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
8431  * @ha: pointer to adapter structure
8432  *
8433  * Export the firmware DDB for all send targets and normal targets to sysfs.
8434  **/
8435 int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
8436 {
8437         struct dev_db_entry *fw_ddb_entry = NULL;
8438         dma_addr_t fw_ddb_entry_dma;
8439         uint16_t max_ddbs;
8440         uint16_t idx = 0;
8441         int ret = QLA_SUCCESS;
8442
8443         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
8444                                           sizeof(*fw_ddb_entry),
8445                                           &fw_ddb_entry_dma, GFP_KERNEL);
8446         if (!fw_ddb_entry) {
8447                 DEBUG2(ql4_printk(KERN_ERR, ha,
8448                                   "%s: Unable to allocate dma buffer\n",
8449                                   __func__));
8450                 return -ENOMEM;
8451         }
8452
8453         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
8454                                      MAX_DEV_DB_ENTRIES;
8455
8456         for (idx = 0; idx < max_ddbs; idx++) {
8457                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
8458                                              idx))
8459                         continue;
8460
8461                 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
8462                 if (ret) {
8463                         ret = -EIO;
8464                         break;
8465                 }
8466         }
8467
8468         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
8469                           fw_ddb_entry_dma);
8470
8471         return ret;
8472 }
8473
8474 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
8475 {
8476         iscsi_destroy_all_flashnode(ha->host);
8477 }
8478
8479 /**
8480  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
8481  * @ha: pointer to adapter structure
8482  * @is_reset: Is this init path or reset path
8483  *
8484  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
8485  * using connection open, then create the list of normal targets (nt)
8486  * from firmware DDBs. Based on the list of nt setup session and connection
8487  * objects.
8488  **/
8489 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
8490 {
8491         uint16_t tmo = 0;
8492         struct list_head list_st, list_nt;
8493         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
8494         unsigned long wtime;
8495
8496         if (!test_bit(AF_LINK_UP, &ha->flags)) {
8497                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
8498                 ha->is_reset = is_reset;
8499                 return;
8500         }
8501
8502         INIT_LIST_HEAD(&list_st);
8503         INIT_LIST_HEAD(&list_nt);
8504
8505         qla4xxx_build_st_list(ha, &list_st);
8506
8507         /* Before issuing conn open mbox, ensure all IPs states are configured
8508          * Note, conn open fails if IPs are not configured
8509          */
8510         qla4xxx_wait_for_ip_configuration(ha);
8511
8512         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
8513         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
8514                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
8515         }
8516
8517         /* Wait to ensure all sendtargets are done for min 12 sec wait */
8518         tmo = ((ha->def_timeout > LOGIN_TOV) &&
8519                (ha->def_timeout < LOGIN_TOV * 10) ?
8520                ha->def_timeout : LOGIN_TOV);
8521
8522         DEBUG2(ql4_printk(KERN_INFO, ha,
8523                           "Default time to wait for build ddb %d\n", tmo));
8524
8525         wtime = jiffies + (HZ * tmo);
8526         do {
8527                 if (list_empty(&list_st))
8528                         break;
8529
8530                 qla4xxx_remove_failed_ddb(ha, &list_st);
8531                 schedule_timeout_uninterruptible(HZ / 10);
8532         } while (time_after(wtime, jiffies));
8533
8534
8535         qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);
8536
8537         qla4xxx_free_ddb_list(&list_st);
8538         qla4xxx_free_ddb_list(&list_nt);
8539
8540         qla4xxx_free_ddb_index(ha);
8541 }
8542
8543 /**
8544  * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
8545  * response.
8546  * @ha: pointer to adapter structure
8547  *
8548  * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
8549  * set in DDB and we will wait for login response of boot targets during
8550  * probe.
8551  **/
8552 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
8553 {
8554         struct ddb_entry *ddb_entry;
8555         struct dev_db_entry *fw_ddb_entry = NULL;
8556         dma_addr_t fw_ddb_entry_dma;
8557         unsigned long wtime;
8558         uint32_t ddb_state;
8559         int max_ddbs, idx, ret;
8560
8561         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
8562                                      MAX_DEV_DB_ENTRIES;
8563
8564         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8565                                           &fw_ddb_entry_dma, GFP_KERNEL);
8566         if (!fw_ddb_entry) {
8567                 ql4_printk(KERN_ERR, ha,
8568                            "%s: Unable to allocate dma buffer\n", __func__);
8569                 goto exit_login_resp;
8570         }
8571
8572         wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
8573
8574         for (idx = 0; idx < max_ddbs; idx++) {
8575                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8576                 if (ddb_entry == NULL)
8577                         continue;
8578
8579                 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
8580                         DEBUG2(ql4_printk(KERN_INFO, ha,
8581                                           "%s: DDB index [%d]\n", __func__,
8582                                           ddb_entry->fw_ddb_index));
8583                         do {
8584                                 ret = qla4xxx_get_fwddb_entry(ha,
8585                                                 ddb_entry->fw_ddb_index,
8586                                                 fw_ddb_entry, fw_ddb_entry_dma,
8587                                                 NULL, NULL, &ddb_state, NULL,
8588                                                 NULL, NULL);
8589                                 if (ret == QLA_ERROR)
8590                                         goto exit_login_resp;
8591
8592                                 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
8593                                     (ddb_state == DDB_DS_SESSION_FAILED))
8594                                         break;
8595
8596                                 schedule_timeout_uninterruptible(HZ);
8597
8598                         } while ((time_after(wtime, jiffies)));
8599
8600                         if (!time_after(wtime, jiffies)) {
8601                                 DEBUG2(ql4_printk(KERN_INFO, ha,
8602                                                   "%s: Login response wait timer expired\n",
8603                                                   __func__));
8604                                  goto exit_login_resp;
8605                         }
8606                 }
8607         }
8608
8609 exit_login_resp:
8610         if (fw_ddb_entry)
8611                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8612                                   fw_ddb_entry, fw_ddb_entry_dma);
8613 }
8614
8615 /**
8616  * qla4xxx_probe_adapter - callback function to probe HBA
8617  * @pdev: pointer to pci_dev structure
8618  * @ent: pointer to pci_device entry
8619  *
8620  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
8621  * It returns zero if successful. It also initializes all data necessary for
8622  * the driver.
8623  **/
8624 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
8625                                  const struct pci_device_id *ent)
8626 {
8627         int ret = -ENODEV, status;
8628         struct Scsi_Host *host;
8629         struct scsi_qla_host *ha;
8630         uint8_t init_retry_count = 0;
8631         char buf[34];
8632         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
8633         uint32_t dev_state;
8634
8635         if (pci_enable_device(pdev))
8636                 return -1;
8637
8638         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
8639         if (host == NULL) {
8640                 printk(KERN_WARNING
8641                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
8642                 goto probe_disable_device;
8643         }
8644
8645         /* Clear our data area */
8646         ha = to_qla_host(host);
8647         memset(ha, 0, sizeof(*ha));
8648
8649         /* Save the information from PCI BIOS.  */
8650         ha->pdev = pdev;
8651         ha->host = host;
8652         ha->host_no = host->host_no;
8653         ha->func_num = PCI_FUNC(ha->pdev->devfn);
8654
8655         pci_enable_pcie_error_reporting(pdev);
8656
8657         /* Setup Runtime configurable options */
8658         if (is_qla8022(ha)) {
8659                 ha->isp_ops = &qla4_82xx_isp_ops;
8660                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
8661                 ha->qdr_sn_window = -1;
8662                 ha->ddr_mn_window = -1;
8663                 ha->curr_window = 255;
8664                 nx_legacy_intr = &legacy_intr[ha->func_num];
8665                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
8666                 ha->nx_legacy_intr.tgt_status_reg =
8667                         nx_legacy_intr->tgt_status_reg;
8668                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
8669                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
8670         } else if (is_qla8032(ha) || is_qla8042(ha)) {
8671                 ha->isp_ops = &qla4_83xx_isp_ops;
8672                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
8673         } else {
8674                 ha->isp_ops = &qla4xxx_isp_ops;
8675         }
8676
8677         if (is_qla80XX(ha)) {
8678                 rwlock_init(&ha->hw_lock);
8679                 ha->pf_bit = ha->func_num << 16;
8680                 /* Set EEH reset type to fundamental if required by hba */
8681                 pdev->needs_freset = 1;
8682         }
8683
8684         /* Configure PCI I/O space. */
8685         ret = ha->isp_ops->iospace_config(ha);
8686         if (ret)
8687                 goto probe_failed_ioconfig;
8688
8689         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
8690                    pdev->device, pdev->irq, ha->reg);
8691
8692         qla4xxx_config_dma_addressing(ha);
8693
8694         /* Initialize lists and spinlocks. */
8695         INIT_LIST_HEAD(&ha->free_srb_q);
8696
8697         mutex_init(&ha->mbox_sem);
8698         mutex_init(&ha->chap_sem);
8699         init_completion(&ha->mbx_intr_comp);
8700         init_completion(&ha->disable_acb_comp);
8701         init_completion(&ha->idc_comp);
8702         init_completion(&ha->link_up_comp);
8703
8704         spin_lock_init(&ha->hardware_lock);
8705         spin_lock_init(&ha->work_lock);
8706
8707         /* Initialize work list */
8708         INIT_LIST_HEAD(&ha->work_list);
8709
8710         /* Allocate dma buffers */
8711         if (qla4xxx_mem_alloc(ha)) {
8712                 ql4_printk(KERN_WARNING, ha,
8713                     "[ERROR] Failed to allocate memory for adapter\n");
8714
8715                 ret = -ENOMEM;
8716                 goto probe_failed;
8717         }
8718
8719         host->cmd_per_lun = 3;
8720         host->max_channel = 0;
8721         host->max_lun = MAX_LUNS - 1;
8722         host->max_id = MAX_TARGETS;
8723         host->max_cmd_len = IOCB_MAX_CDB_LEN;
8724         host->can_queue = MAX_SRBS ;
8725         host->transportt = qla4xxx_scsi_transport;
8726
8727         pci_set_drvdata(pdev, ha);
8728
8729         ret = scsi_add_host(host, &pdev->dev);
8730         if (ret)
8731                 goto probe_failed;
8732
8733         if (is_qla80XX(ha))
8734                 qla4_8xxx_get_flash_info(ha);
8735
8736         if (is_qla8032(ha) || is_qla8042(ha)) {
8737                 qla4_83xx_read_reset_template(ha);
8738                 /*
8739                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
8740                  * If DONRESET_BIT0 is set, drivers should not set dev_state
8741                  * to NEED_RESET. But if NEED_RESET is set, drivers should
8742                  * should honor the reset.
8743                  */
8744                 if (ql4xdontresethba == 1)
8745                         qla4_83xx_set_idc_dontreset(ha);
8746         }
8747
8748         /*
8749          * Initialize the Host adapter request/response queues and
8750          * firmware
8751          * NOTE: interrupts enabled upon successful completion
8752          */
8753         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8754
8755         /* Dont retry adapter initialization if IRQ allocation failed */
8756         if (is_qla80XX(ha) && (status == QLA_ERROR))
8757                 goto skip_retry_init;
8758
8759         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
8760             init_retry_count++ < MAX_INIT_RETRIES) {
8761
8762                 if (is_qla80XX(ha)) {
8763                         ha->isp_ops->idc_lock(ha);
8764                         dev_state = qla4_8xxx_rd_direct(ha,
8765                                                         QLA8XXX_CRB_DEV_STATE);
8766                         ha->isp_ops->idc_unlock(ha);
8767                         if (dev_state == QLA8XXX_DEV_FAILED) {
8768                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
8769                                     "initialize adapter. H/W is in failed state\n",
8770                                     __func__);
8771                                 break;
8772                         }
8773                 }
8774                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
8775                               "(%d)\n", __func__, init_retry_count));
8776
8777                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
8778                         continue;
8779
8780                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8781                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
8782                         if (qla4_8xxx_check_init_adapter_retry(ha) == QLA_ERROR)
8783                                 goto skip_retry_init;
8784                 }
8785         }
8786
8787 skip_retry_init:
8788         if (!test_bit(AF_ONLINE, &ha->flags)) {
8789                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
8790
8791                 if ((is_qla8022(ha) && ql4xdontresethba) ||
8792                     ((is_qla8032(ha) || is_qla8042(ha)) &&
8793                      qla4_83xx_idc_dontreset(ha))) {
8794                         /* Put the device in failed state. */
8795                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
8796                         ha->isp_ops->idc_lock(ha);
8797                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8798                                             QLA8XXX_DEV_FAILED);
8799                         ha->isp_ops->idc_unlock(ha);
8800                 }
8801                 ret = -ENODEV;
8802                 goto remove_host;
8803         }
8804
8805         /* Startup the kernel thread for this host adapter. */
8806         DEBUG2(printk("scsi: %s: Starting kernel thread for "
8807                       "qla4xxx_dpc\n", __func__));
8808         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
8809         ha->dpc_thread = create_singlethread_workqueue(buf);
8810         if (!ha->dpc_thread) {
8811                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
8812                 ret = -ENODEV;
8813                 goto remove_host;
8814         }
8815         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
8816
8817         ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
8818                                       ha->host_no);
8819         if (!ha->task_wq) {
8820                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
8821                 ret = -ENODEV;
8822                 goto remove_host;
8823         }
8824
8825         /*
8826          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
8827          * (which is called indirectly by qla4xxx_initialize_adapter),
8828          * so that irqs will be registered after crbinit but before
8829          * mbx_intr_enable.
8830          */
8831         if (is_qla40XX(ha)) {
8832                 ret = qla4xxx_request_irqs(ha);
8833                 if (ret) {
8834                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
8835                             "interrupt %d already in use.\n", pdev->irq);
8836                         goto remove_host;
8837                 }
8838         }
8839
8840         pci_save_state(ha->pdev);
8841         ha->isp_ops->enable_intrs(ha);
8842
8843         /* Start timer thread. */
8844         qla4xxx_start_timer(ha, 1);
8845
8846         set_bit(AF_INIT_DONE, &ha->flags);
8847
8848         qla4_8xxx_alloc_sysfs_attr(ha);
8849
8850         printk(KERN_INFO
8851                " QLogic iSCSI HBA Driver version: %s\n"
8852                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
8853                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
8854                ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
8855                ha->fw_info.fw_patch, ha->fw_info.fw_build);
8856
8857         /* Set the driver version */
8858         if (is_qla80XX(ha))
8859                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
8860
8861         if (qla4xxx_setup_boot_info(ha))
8862                 ql4_printk(KERN_ERR, ha,
8863                            "%s: No iSCSI boot target configured\n", __func__);
8864
8865         set_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags);
8866         /* Perform the build ddb list and login to each */
8867         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
8868         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
8869         qla4xxx_wait_login_resp_boot_tgt(ha);
8870
8871         qla4xxx_create_chap_list(ha);
8872
8873         qla4xxx_create_ifaces(ha);
8874         return 0;
8875
8876 remove_host:
8877         scsi_remove_host(ha->host);
8878
8879 probe_failed:
8880         qla4xxx_free_adapter(ha);
8881
8882 probe_failed_ioconfig:
8883         pci_disable_pcie_error_reporting(pdev);
8884         scsi_host_put(ha->host);
8885
8886 probe_disable_device:
8887         pci_disable_device(pdev);
8888
8889         return ret;
8890 }
8891
8892 /**
8893  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
8894  * @ha: pointer to adapter structure
8895  *
8896  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
8897  * so that the other port will not re-initialize while in the process of
8898  * removing the ha due to driver unload or hba hotplug.
8899  **/
8900 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
8901 {
8902         struct scsi_qla_host *other_ha = NULL;
8903         struct pci_dev *other_pdev = NULL;
8904         int fn = ISP4XXX_PCI_FN_2;
8905
8906         /*iscsi function numbers for ISP4xxx is 1 and 3*/
8907         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
8908                 fn = ISP4XXX_PCI_FN_1;
8909
8910         other_pdev =
8911                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8912                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8913                 fn));
8914
8915         /* Get other_ha if other_pdev is valid and state is enable*/
8916         if (other_pdev) {
8917                 if (atomic_read(&other_pdev->enable_cnt)) {
8918                         other_ha = pci_get_drvdata(other_pdev);
8919                         if (other_ha) {
8920                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
8921                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
8922                                     "Prevent %s reinit\n", __func__,
8923                                     dev_name(&other_ha->pdev->dev)));
8924                         }
8925                 }
8926                 pci_dev_put(other_pdev);
8927         }
8928 }
8929
8930 static void qla4xxx_destroy_ddb(struct scsi_qla_host *ha,
8931                 struct ddb_entry *ddb_entry)
8932 {
8933         struct dev_db_entry *fw_ddb_entry = NULL;
8934         dma_addr_t fw_ddb_entry_dma;
8935         unsigned long wtime;
8936         uint32_t ddb_state;
8937         int options;
8938         int status;
8939
8940         options = LOGOUT_OPTION_CLOSE_SESSION;
8941         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
8942                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
8943                 goto clear_ddb;
8944         }
8945
8946         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8947                                           &fw_ddb_entry_dma, GFP_KERNEL);
8948         if (!fw_ddb_entry) {
8949                 ql4_printk(KERN_ERR, ha,
8950                            "%s: Unable to allocate dma buffer\n", __func__);
8951                 goto clear_ddb;
8952         }
8953
8954         wtime = jiffies + (HZ * LOGOUT_TOV);
8955         do {
8956                 status = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
8957                                                  fw_ddb_entry, fw_ddb_entry_dma,
8958                                                  NULL, NULL, &ddb_state, NULL,
8959                                                  NULL, NULL);
8960                 if (status == QLA_ERROR)
8961                         goto free_ddb;
8962
8963                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
8964                     (ddb_state == DDB_DS_SESSION_FAILED))
8965                         goto free_ddb;
8966
8967                 schedule_timeout_uninterruptible(HZ);
8968         } while ((time_after(wtime, jiffies)));
8969
8970 free_ddb:
8971         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8972                           fw_ddb_entry, fw_ddb_entry_dma);
8973 clear_ddb:
8974         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
8975 }
8976
8977 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
8978 {
8979         struct ddb_entry *ddb_entry;
8980         int idx;
8981
8982         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
8983
8984                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8985                 if ((ddb_entry != NULL) &&
8986                     (ddb_entry->ddb_type == FLASH_DDB)) {
8987
8988                         qla4xxx_destroy_ddb(ha, ddb_entry);
8989                         /*
8990                          * we have decremented the reference count of the driver
8991                          * when we setup the session to have the driver unload
8992                          * to be seamless without actually destroying the
8993                          * session
8994                          **/
8995                         try_module_get(qla4xxx_iscsi_transport.owner);
8996                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
8997                         qla4xxx_free_ddb(ha, ddb_entry);
8998                         iscsi_session_teardown(ddb_entry->sess);
8999                 }
9000         }
9001 }
9002 /**
9003  * qla4xxx_remove_adapter - callback function to remove adapter.
9004  * @pdev: PCI device pointer
9005  **/
9006 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
9007 {
9008         struct scsi_qla_host *ha;
9009
9010         /*
9011          * If the PCI device is disabled then it means probe_adapter had
9012          * failed and resources already cleaned up on probe_adapter exit.
9013          */
9014         if (!pci_is_enabled(pdev))
9015                 return;
9016
9017         ha = pci_get_drvdata(pdev);
9018
9019         if (is_qla40XX(ha))
9020                 qla4xxx_prevent_other_port_reinit(ha);
9021
9022         /* destroy iface from sysfs */
9023         qla4xxx_destroy_ifaces(ha);
9024
9025         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
9026                 iscsi_boot_destroy_kset(ha->boot_kset);
9027
9028         qla4xxx_destroy_fw_ddb_session(ha);
9029         qla4_8xxx_free_sysfs_attr(ha);
9030
9031         qla4xxx_sysfs_ddb_remove(ha);
9032         scsi_remove_host(ha->host);
9033
9034         qla4xxx_free_adapter(ha);
9035
9036         scsi_host_put(ha->host);
9037
9038         pci_disable_pcie_error_reporting(pdev);
9039         pci_disable_device(pdev);
9040 }
9041
9042 /**
9043  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
9044  * @ha: HA context
9045  */
9046 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
9047 {
9048         /* Update our PCI device dma_mask for full 64 bit mask */
9049         if (dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(64))) {
9050                 dev_dbg(&ha->pdev->dev,
9051                           "Failed to set 64 bit PCI consistent mask; "
9052                            "using 32 bit.\n");
9053                 dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(32));
9054         }
9055 }
9056
9057 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
9058 {
9059         struct iscsi_cls_session *cls_sess;
9060         struct iscsi_session *sess;
9061         struct ddb_entry *ddb;
9062         int queue_depth = QL4_DEF_QDEPTH;
9063
9064         cls_sess = starget_to_session(sdev->sdev_target);
9065         sess = cls_sess->dd_data;
9066         ddb = sess->dd_data;
9067
9068         sdev->hostdata = ddb;
9069
9070         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
9071                 queue_depth = ql4xmaxqdepth;
9072
9073         scsi_change_queue_depth(sdev, queue_depth);
9074         return 0;
9075 }
9076
9077 /**
9078  * qla4xxx_del_from_active_array - returns an active srb
9079  * @ha: Pointer to host adapter structure.
9080  * @index: index into the active_array
9081  *
9082  * This routine removes and returns the srb at the specified index
9083  **/
9084 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
9085     uint32_t index)
9086 {
9087         struct srb *srb = NULL;
9088         struct scsi_cmnd *cmd = NULL;
9089
9090         cmd = scsi_host_find_tag(ha->host, index);
9091         if (!cmd)
9092                 return srb;
9093
9094         srb = (struct srb *)CMD_SP(cmd);
9095         if (!srb)
9096                 return srb;
9097
9098         /* update counters */
9099         if (srb->flags & SRB_DMA_VALID) {
9100                 ha->iocb_cnt -= srb->iocb_cnt;
9101                 if (srb->cmd)
9102                         srb->cmd->host_scribble =
9103                                 (unsigned char *)(unsigned long) MAX_SRBS;
9104         }
9105         return srb;
9106 }
9107
9108 /**
9109  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
9110  * @ha: Pointer to host adapter structure.
9111  * @cmd: Scsi Command to wait on.
9112  *
9113  * This routine waits for the command to be returned by the Firmware
9114  * for some max time.
9115  **/
9116 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
9117                                       struct scsi_cmnd *cmd)
9118 {
9119         int done = 0;
9120         struct srb *rp;
9121         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
9122         int ret = SUCCESS;
9123
9124         /* Dont wait on command if PCI error is being handled
9125          * by PCI AER driver
9126          */
9127         if (unlikely(pci_channel_offline(ha->pdev)) ||
9128             (test_bit(AF_EEH_BUSY, &ha->flags))) {
9129                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
9130                     ha->host_no, __func__);
9131                 return ret;
9132         }
9133
9134         do {
9135                 /* Checking to see if its returned to OS */
9136                 rp = (struct srb *) CMD_SP(cmd);
9137                 if (rp == NULL) {
9138                         done++;
9139                         break;
9140                 }
9141
9142                 msleep(2000);
9143         } while (max_wait_time--);
9144
9145         return done;
9146 }
9147
9148 /**
9149  * qla4xxx_wait_for_hba_online - waits for HBA to come online
9150  * @ha: Pointer to host adapter structure
9151  **/
9152 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
9153 {
9154         unsigned long wait_online;
9155
9156         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
9157         while (time_before(jiffies, wait_online)) {
9158
9159                 if (adapter_up(ha))
9160                         return QLA_SUCCESS;
9161
9162                 msleep(2000);
9163         }
9164
9165         return QLA_ERROR;
9166 }
9167
9168 /**
9169  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
9170  * @ha: pointer to HBA
9171  * @stgt: pointer to SCSI target
9172  * @sdev: pointer to SCSI device
9173  *
9174  * This function waits for all outstanding commands to a lun to complete. It
9175  * returns 0 if all pending commands are returned and 1 otherwise.
9176  **/
9177 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
9178                                         struct scsi_target *stgt,
9179                                         struct scsi_device *sdev)
9180 {
9181         int cnt;
9182         int status = 0;
9183         struct scsi_cmnd *cmd;
9184
9185         /*
9186          * Waiting for all commands for the designated target or dev
9187          * in the active array
9188          */
9189         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
9190                 cmd = scsi_host_find_tag(ha->host, cnt);
9191                 if (cmd && stgt == scsi_target(cmd->device) &&
9192                     (!sdev || sdev == cmd->device)) {
9193                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9194                                 status++;
9195                                 break;
9196                         }
9197                 }
9198         }
9199         return status;
9200 }
9201
9202 /**
9203  * qla4xxx_eh_abort - callback for abort task.
9204  * @cmd: Pointer to Linux's SCSI command structure
9205  *
9206  * This routine is called by the Linux OS to abort the specified
9207  * command.
9208  **/
9209 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
9210 {
9211         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9212         unsigned int id = cmd->device->id;
9213         uint64_t lun = cmd->device->lun;
9214         unsigned long flags;
9215         struct srb *srb = NULL;
9216         int ret = SUCCESS;
9217         int wait = 0;
9218         int rval;
9219
9220         ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Abort command issued cmd=%p, cdb=0x%x\n",
9221                    ha->host_no, id, lun, cmd, cmd->cmnd[0]);
9222
9223         rval = qla4xxx_isp_check_reg(ha);
9224         if (rval != QLA_SUCCESS) {
9225                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9226                 return FAILED;
9227         }
9228
9229         spin_lock_irqsave(&ha->hardware_lock, flags);
9230         srb = (struct srb *) CMD_SP(cmd);
9231         if (!srb) {
9232                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
9233                 ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Specified command has already completed.\n",
9234                            ha->host_no, id, lun);
9235                 return SUCCESS;
9236         }
9237         kref_get(&srb->srb_ref);
9238         spin_unlock_irqrestore(&ha->hardware_lock, flags);
9239
9240         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
9241                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx failed.\n",
9242                     ha->host_no, id, lun));
9243                 ret = FAILED;
9244         } else {
9245                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx success.\n",
9246                     ha->host_no, id, lun));
9247                 wait = 1;
9248         }
9249
9250         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
9251
9252         /* Wait for command to complete */
9253         if (wait) {
9254                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9255                         DEBUG2(printk("scsi%ld:%d:%llu: Abort handler timed out\n",
9256                             ha->host_no, id, lun));
9257                         ret = FAILED;
9258                 }
9259         }
9260
9261         ql4_printk(KERN_INFO, ha,
9262             "scsi%ld:%d:%llu: Abort command - %s\n",
9263             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
9264
9265         return ret;
9266 }
9267
9268 /**
9269  * qla4xxx_eh_device_reset - callback for target reset.
9270  * @cmd: Pointer to Linux's SCSI command structure
9271  *
9272  * This routine is called by the Linux OS to reset all luns on the
9273  * specified target.
9274  **/
9275 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
9276 {
9277         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9278         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9279         int ret = FAILED, stat;
9280         int rval;
9281
9282         if (!ddb_entry)
9283                 return ret;
9284
9285         ret = iscsi_block_scsi_eh(cmd);
9286         if (ret)
9287                 return ret;
9288         ret = FAILED;
9289
9290         ql4_printk(KERN_INFO, ha,
9291                    "scsi%ld:%d:%d:%llu: DEVICE RESET ISSUED.\n", ha->host_no,
9292                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9293
9294         DEBUG2(printk(KERN_INFO
9295                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
9296                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
9297                       cmd, jiffies, cmd->request->timeout / HZ,
9298                       ha->dpc_flags, cmd->result, cmd->allowed));
9299
9300         rval = qla4xxx_isp_check_reg(ha);
9301         if (rval != QLA_SUCCESS) {
9302                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9303                 return FAILED;
9304         }
9305
9306         /* FIXME: wait for hba to go online */
9307         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
9308         if (stat != QLA_SUCCESS) {
9309                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
9310                 goto eh_dev_reset_done;
9311         }
9312
9313         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9314                                          cmd->device)) {
9315                 ql4_printk(KERN_INFO, ha,
9316                            "DEVICE RESET FAILED - waiting for "
9317                            "commands.\n");
9318                 goto eh_dev_reset_done;
9319         }
9320
9321         /* Send marker. */
9322         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9323                 MM_LUN_RESET) != QLA_SUCCESS)
9324                 goto eh_dev_reset_done;
9325
9326         ql4_printk(KERN_INFO, ha,
9327                    "scsi(%ld:%d:%d:%llu): DEVICE RESET SUCCEEDED.\n",
9328                    ha->host_no, cmd->device->channel, cmd->device->id,
9329                    cmd->device->lun);
9330
9331         ret = SUCCESS;
9332
9333 eh_dev_reset_done:
9334
9335         return ret;
9336 }
9337
9338 /**
9339  * qla4xxx_eh_target_reset - callback for target reset.
9340  * @cmd: Pointer to Linux's SCSI command structure
9341  *
9342  * This routine is called by the Linux OS to reset the target.
9343  **/
9344 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
9345 {
9346         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9347         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9348         int stat, ret;
9349         int rval;
9350
9351         if (!ddb_entry)
9352                 return FAILED;
9353
9354         ret = iscsi_block_scsi_eh(cmd);
9355         if (ret)
9356                 return ret;
9357
9358         starget_printk(KERN_INFO, scsi_target(cmd->device),
9359                        "WARM TARGET RESET ISSUED.\n");
9360
9361         DEBUG2(printk(KERN_INFO
9362                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
9363                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
9364                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
9365                       ha->dpc_flags, cmd->result, cmd->allowed));
9366
9367         rval = qla4xxx_isp_check_reg(ha);
9368         if (rval != QLA_SUCCESS) {
9369                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9370                 return FAILED;
9371         }
9372
9373         stat = qla4xxx_reset_target(ha, ddb_entry);
9374         if (stat != QLA_SUCCESS) {
9375                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9376                                "WARM TARGET RESET FAILED.\n");
9377                 return FAILED;
9378         }
9379
9380         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9381                                          NULL)) {
9382                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9383                                "WARM TARGET DEVICE RESET FAILED - "
9384                                "waiting for commands.\n");
9385                 return FAILED;
9386         }
9387
9388         /* Send marker. */
9389         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9390                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
9391                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9392                                "WARM TARGET DEVICE RESET FAILED - "
9393                                "marker iocb failed.\n");
9394                 return FAILED;
9395         }
9396
9397         starget_printk(KERN_INFO, scsi_target(cmd->device),
9398                        "WARM TARGET RESET SUCCEEDED.\n");
9399         return SUCCESS;
9400 }
9401
9402 /**
9403  * qla4xxx_is_eh_active - check if error handler is running
9404  * @shost: Pointer to SCSI Host struct
9405  *
9406  * This routine finds that if reset host is called in EH
9407  * scenario or from some application like sg_reset
9408  **/
9409 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
9410 {
9411         if (shost->shost_state == SHOST_RECOVERY)
9412                 return 1;
9413         return 0;
9414 }
9415
9416 /**
9417  * qla4xxx_eh_host_reset - kernel callback
9418  * @cmd: Pointer to Linux's SCSI command structure
9419  *
9420  * This routine is invoked by the Linux kernel to perform fatal error
9421  * recovery on the specified adapter.
9422  **/
9423 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
9424 {
9425         int return_status = FAILED;
9426         struct scsi_qla_host *ha;
9427         int rval;
9428
9429         ha = to_qla_host(cmd->device->host);
9430
9431         rval = qla4xxx_isp_check_reg(ha);
9432         if (rval != QLA_SUCCESS) {
9433                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9434                 return FAILED;
9435         }
9436
9437         if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
9438                 qla4_83xx_set_idc_dontreset(ha);
9439
9440         /*
9441          * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
9442          * protocol drivers, we should not set device_state to NEED_RESET
9443          */
9444         if (ql4xdontresethba ||
9445             ((is_qla8032(ha) || is_qla8042(ha)) &&
9446              qla4_83xx_idc_dontreset(ha))) {
9447                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
9448                      ha->host_no, __func__));
9449
9450                 /* Clear outstanding srb in queues */
9451                 if (qla4xxx_is_eh_active(cmd->device->host))
9452                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
9453
9454                 return FAILED;
9455         }
9456
9457         ql4_printk(KERN_INFO, ha,
9458                    "scsi(%ld:%d:%d:%llu): HOST RESET ISSUED.\n", ha->host_no,
9459                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9460
9461         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
9462                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
9463                               "DEAD.\n", ha->host_no, cmd->device->channel,
9464                               __func__));
9465
9466                 return FAILED;
9467         }
9468
9469         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9470                 if (is_qla80XX(ha))
9471                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
9472                 else
9473                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
9474         }
9475
9476         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
9477                 return_status = SUCCESS;
9478
9479         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
9480                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
9481
9482         return return_status;
9483 }
9484
9485 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
9486 {
9487         uint32_t mbox_cmd[MBOX_REG_COUNT];
9488         uint32_t mbox_sts[MBOX_REG_COUNT];
9489         struct addr_ctrl_blk_def *acb = NULL;
9490         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
9491         int rval = QLA_SUCCESS;
9492         dma_addr_t acb_dma;
9493
9494         acb = dma_alloc_coherent(&ha->pdev->dev,
9495                                  sizeof(struct addr_ctrl_blk_def),
9496                                  &acb_dma, GFP_KERNEL);
9497         if (!acb) {
9498                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
9499                            __func__);
9500                 rval = -ENOMEM;
9501                 goto exit_port_reset;
9502         }
9503
9504         memset(acb, 0, acb_len);
9505
9506         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
9507         if (rval != QLA_SUCCESS) {
9508                 rval = -EIO;
9509                 goto exit_free_acb;
9510         }
9511
9512         rval = qla4xxx_disable_acb(ha);
9513         if (rval != QLA_SUCCESS) {
9514                 rval = -EIO;
9515                 goto exit_free_acb;
9516         }
9517
9518         wait_for_completion_timeout(&ha->disable_acb_comp,
9519                                     DISABLE_ACB_TOV * HZ);
9520
9521         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
9522         if (rval != QLA_SUCCESS) {
9523                 rval = -EIO;
9524                 goto exit_free_acb;
9525         }
9526
9527 exit_free_acb:
9528         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
9529                           acb, acb_dma);
9530 exit_port_reset:
9531         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
9532                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
9533         return rval;
9534 }
9535
9536 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
9537 {
9538         struct scsi_qla_host *ha = to_qla_host(shost);
9539         int rval = QLA_SUCCESS;
9540         uint32_t idc_ctrl;
9541
9542         if (ql4xdontresethba) {
9543                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
9544                                   __func__));
9545                 rval = -EPERM;
9546                 goto exit_host_reset;
9547         }
9548
9549         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
9550                 goto recover_adapter;
9551
9552         switch (reset_type) {
9553         case SCSI_ADAPTER_RESET:
9554                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
9555                 break;
9556         case SCSI_FIRMWARE_RESET:
9557                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9558                         if (is_qla80XX(ha))
9559                                 /* set firmware context reset */
9560                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
9561                                         &ha->dpc_flags);
9562                         else {
9563                                 rval = qla4xxx_context_reset(ha);
9564                                 goto exit_host_reset;
9565                         }
9566                 }
9567                 break;
9568         }
9569
9570 recover_adapter:
9571         /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
9572          * reset is issued by application */
9573         if ((is_qla8032(ha) || is_qla8042(ha)) &&
9574             test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9575                 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
9576                 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
9577                                  (idc_ctrl | GRACEFUL_RESET_BIT1));
9578         }
9579
9580         rval = qla4xxx_recover_adapter(ha);
9581         if (rval != QLA_SUCCESS) {
9582                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
9583                                   __func__));
9584                 rval = -EIO;
9585         }
9586
9587 exit_host_reset:
9588         return rval;
9589 }
9590
9591 /* PCI AER driver recovers from all correctable errors w/o
9592  * driver intervention. For uncorrectable errors PCI AER
9593  * driver calls the following device driver's callbacks
9594  *
9595  * - Fatal Errors - link_reset
9596  * - Non-Fatal Errors - driver's error_detected() which
9597  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
9598  *
9599  * PCI AER driver calls
9600  * CAN_RECOVER - driver's mmio_enabled(), mmio_enabled()
9601  *               returns RECOVERED or NEED_RESET if fw_hung
9602  * NEED_RESET - driver's slot_reset()
9603  * DISCONNECT - device is dead & cannot recover
9604  * RECOVERED - driver's resume()
9605  */
9606 static pci_ers_result_t
9607 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9608 {
9609         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9610
9611         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
9612             ha->host_no, __func__, state);
9613
9614         if (!is_aer_supported(ha))
9615                 return PCI_ERS_RESULT_NONE;
9616
9617         switch (state) {
9618         case pci_channel_io_normal:
9619                 clear_bit(AF_EEH_BUSY, &ha->flags);
9620                 return PCI_ERS_RESULT_CAN_RECOVER;
9621         case pci_channel_io_frozen:
9622                 set_bit(AF_EEH_BUSY, &ha->flags);
9623                 qla4xxx_mailbox_premature_completion(ha);
9624                 qla4xxx_free_irqs(ha);
9625                 pci_disable_device(pdev);
9626                 /* Return back all IOs */
9627                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
9628                 return PCI_ERS_RESULT_NEED_RESET;
9629         case pci_channel_io_perm_failure:
9630                 set_bit(AF_EEH_BUSY, &ha->flags);
9631                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
9632                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
9633                 return PCI_ERS_RESULT_DISCONNECT;
9634         }
9635         return PCI_ERS_RESULT_NEED_RESET;
9636 }
9637
9638 /**
9639  * qla4xxx_pci_mmio_enabled() gets called if
9640  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
9641  * and read/write to the device still works.
9642  * @pdev: PCI device pointer
9643  **/
9644 static pci_ers_result_t
9645 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
9646 {
9647         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9648
9649         if (!is_aer_supported(ha))
9650                 return PCI_ERS_RESULT_NONE;
9651
9652         return PCI_ERS_RESULT_RECOVERED;
9653 }
9654
9655 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
9656 {
9657         uint32_t rval = QLA_ERROR;
9658         int fn;
9659         struct pci_dev *other_pdev = NULL;
9660
9661         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
9662
9663         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9664
9665         if (test_bit(AF_ONLINE, &ha->flags)) {
9666                 clear_bit(AF_ONLINE, &ha->flags);
9667                 clear_bit(AF_LINK_UP, &ha->flags);
9668                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
9669                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
9670         }
9671
9672         fn = PCI_FUNC(ha->pdev->devfn);
9673         if (is_qla8022(ha)) {
9674                 while (fn > 0) {
9675                         fn--;
9676                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at func %x\n",
9677                                    ha->host_no, __func__, fn);
9678                         /* Get the pci device given the domain, bus,
9679                          * slot/function number */
9680                         other_pdev = pci_get_domain_bus_and_slot(
9681                                            pci_domain_nr(ha->pdev->bus),
9682                                            ha->pdev->bus->number,
9683                                            PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
9684                                            fn));
9685
9686                         if (!other_pdev)
9687                                 continue;
9688
9689                         if (atomic_read(&other_pdev->enable_cnt)) {
9690                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI func in enabled state%x\n",
9691                                            ha->host_no, __func__, fn);
9692                                 pci_dev_put(other_pdev);
9693                                 break;
9694                         }
9695                         pci_dev_put(other_pdev);
9696                 }
9697         } else {
9698                 /* this case is meant for ISP83xx/ISP84xx only */
9699                 if (qla4_83xx_can_perform_reset(ha)) {
9700                         /* reset fn as iSCSI is going to perform the reset */
9701                         fn = 0;
9702                 }
9703         }
9704
9705         /* The first function on the card, the reset owner will
9706          * start & initialize the firmware. The other functions
9707          * on the card will reset the firmware context
9708          */
9709         if (!fn) {
9710                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
9711                     "0x%x is the owner\n", ha->host_no, __func__,
9712                     ha->pdev->devfn);
9713
9714                 ha->isp_ops->idc_lock(ha);
9715                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9716                                     QLA8XXX_DEV_COLD);
9717                 ha->isp_ops->idc_unlock(ha);
9718
9719                 rval = qla4_8xxx_update_idc_reg(ha);
9720                 if (rval == QLA_ERROR) {
9721                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
9722                                    ha->host_no, __func__);
9723                         ha->isp_ops->idc_lock(ha);
9724                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9725                                             QLA8XXX_DEV_FAILED);
9726                         ha->isp_ops->idc_unlock(ha);
9727                         goto exit_error_recovery;
9728                 }
9729
9730                 clear_bit(AF_FW_RECOVERY, &ha->flags);
9731                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9732
9733                 if (rval != QLA_SUCCESS) {
9734                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9735                             "FAILED\n", ha->host_no, __func__);
9736                         qla4xxx_free_irqs(ha);
9737                         ha->isp_ops->idc_lock(ha);
9738                         qla4_8xxx_clear_drv_active(ha);
9739                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9740                                             QLA8XXX_DEV_FAILED);
9741                         ha->isp_ops->idc_unlock(ha);
9742                 } else {
9743                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9744                             "READY\n", ha->host_no, __func__);
9745                         ha->isp_ops->idc_lock(ha);
9746                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9747                                             QLA8XXX_DEV_READY);
9748                         /* Clear driver state register */
9749                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
9750                         qla4_8xxx_set_drv_active(ha);
9751                         ha->isp_ops->idc_unlock(ha);
9752                         ha->isp_ops->enable_intrs(ha);
9753                 }
9754         } else {
9755                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
9756                     "the reset owner\n", ha->host_no, __func__,
9757                     ha->pdev->devfn);
9758                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
9759                      QLA8XXX_DEV_READY)) {
9760                         clear_bit(AF_FW_RECOVERY, &ha->flags);
9761                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9762                         if (rval == QLA_SUCCESS)
9763                                 ha->isp_ops->enable_intrs(ha);
9764                         else
9765                                 qla4xxx_free_irqs(ha);
9766
9767                         ha->isp_ops->idc_lock(ha);
9768                         qla4_8xxx_set_drv_active(ha);
9769                         ha->isp_ops->idc_unlock(ha);
9770                 }
9771         }
9772 exit_error_recovery:
9773         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9774         return rval;
9775 }
9776
9777 static pci_ers_result_t
9778 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
9779 {
9780         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
9781         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9782         int rc;
9783
9784         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
9785             ha->host_no, __func__);
9786
9787         if (!is_aer_supported(ha))
9788                 return PCI_ERS_RESULT_NONE;
9789
9790         /* Restore the saved state of PCIe device -
9791          * BAR registers, PCI Config space, PCIX, MSI,
9792          * IOV states
9793          */
9794         pci_restore_state(pdev);
9795
9796         /* pci_restore_state() clears the saved_state flag of the device
9797          * save restored state which resets saved_state flag
9798          */
9799         pci_save_state(pdev);
9800
9801         /* Initialize device or resume if in suspended state */
9802         rc = pci_enable_device(pdev);
9803         if (rc) {
9804                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
9805                     "device after reset\n", ha->host_no, __func__);
9806                 goto exit_slot_reset;
9807         }
9808
9809         ha->isp_ops->disable_intrs(ha);
9810
9811         if (is_qla80XX(ha)) {
9812                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
9813                         ret = PCI_ERS_RESULT_RECOVERED;
9814                         goto exit_slot_reset;
9815                 } else
9816                         goto exit_slot_reset;
9817         }
9818
9819 exit_slot_reset:
9820         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
9821             "device after reset\n", ha->host_no, __func__, ret);
9822         return ret;
9823 }
9824
9825 static void
9826 qla4xxx_pci_resume(struct pci_dev *pdev)
9827 {
9828         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9829         int ret;
9830
9831         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
9832             ha->host_no, __func__);
9833
9834         ret = qla4xxx_wait_for_hba_online(ha);
9835         if (ret != QLA_SUCCESS) {
9836                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
9837                     "resume I/O from slot/link_reset\n", ha->host_no,
9838                      __func__);
9839         }
9840
9841         clear_bit(AF_EEH_BUSY, &ha->flags);
9842 }
9843
9844 static const struct pci_error_handlers qla4xxx_err_handler = {
9845         .error_detected = qla4xxx_pci_error_detected,
9846         .mmio_enabled = qla4xxx_pci_mmio_enabled,
9847         .slot_reset = qla4xxx_pci_slot_reset,
9848         .resume = qla4xxx_pci_resume,
9849 };
9850
9851 static struct pci_device_id qla4xxx_pci_tbl[] = {
9852         {
9853                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9854                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
9855                 .subvendor      = PCI_ANY_ID,
9856                 .subdevice      = PCI_ANY_ID,
9857         },
9858         {
9859                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9860                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
9861                 .subvendor      = PCI_ANY_ID,
9862                 .subdevice      = PCI_ANY_ID,
9863         },
9864         {
9865                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9866                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
9867                 .subvendor      = PCI_ANY_ID,
9868                 .subdevice      = PCI_ANY_ID,
9869         },
9870         {
9871                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9872                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
9873                 .subvendor      = PCI_ANY_ID,
9874                 .subdevice      = PCI_ANY_ID,
9875         },
9876         {
9877                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9878                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
9879                 .subvendor      = PCI_ANY_ID,
9880                 .subdevice      = PCI_ANY_ID,
9881         },
9882         {
9883                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9884                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8042,
9885                 .subvendor      = PCI_ANY_ID,
9886                 .subdevice      = PCI_ANY_ID,
9887         },
9888         {0, 0},
9889 };
9890 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
9891
9892 static struct pci_driver qla4xxx_pci_driver = {
9893         .name           = DRIVER_NAME,
9894         .id_table       = qla4xxx_pci_tbl,
9895         .probe          = qla4xxx_probe_adapter,
9896         .remove         = qla4xxx_remove_adapter,
9897         .err_handler = &qla4xxx_err_handler,
9898 };
9899
9900 static int __init qla4xxx_module_init(void)
9901 {
9902         int ret;
9903
9904         if (ql4xqfulltracking)
9905                 qla4xxx_driver_template.track_queue_depth = 1;
9906
9907         /* Allocate cache for SRBs. */
9908         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
9909                                        SLAB_HWCACHE_ALIGN, NULL);
9910         if (srb_cachep == NULL) {
9911                 printk(KERN_ERR
9912                        "%s: Unable to allocate SRB cache..."
9913                        "Failing load!\n", DRIVER_NAME);
9914                 ret = -ENOMEM;
9915                 goto no_srp_cache;
9916         }
9917
9918         /* Derive version string. */
9919         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
9920         if (ql4xextended_error_logging)
9921                 strcat(qla4xxx_version_str, "-debug");
9922
9923         qla4xxx_scsi_transport =
9924                 iscsi_register_transport(&qla4xxx_iscsi_transport);
9925         if (!qla4xxx_scsi_transport){
9926                 ret = -ENODEV;
9927                 goto release_srb_cache;
9928         }
9929
9930         ret = pci_register_driver(&qla4xxx_pci_driver);
9931         if (ret)
9932                 goto unregister_transport;
9933
9934         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
9935         return 0;
9936
9937 unregister_transport:
9938         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9939 release_srb_cache:
9940         kmem_cache_destroy(srb_cachep);
9941 no_srp_cache:
9942         return ret;
9943 }
9944
9945 static void __exit qla4xxx_module_exit(void)
9946 {
9947         pci_unregister_driver(&qla4xxx_pci_driver);
9948         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9949         kmem_cache_destroy(srb_cachep);
9950 }
9951
9952 module_init(qla4xxx_module_init);
9953 module_exit(qla4xxx_module_exit);
9954
9955 MODULE_AUTHOR("QLogic Corporation");
9956 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
9957 MODULE_LICENSE("GPL");
9958 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);