drivers/scsi/qla4xxx/ql4_os.c

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