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         .use_clustering         = ENABLE_CLUSTERING,
 209         .sg_tablesize           = SG_ALL,
 210
 211         .max_sectors            = 0xFFFF,
 212         .shost_attrs            = qla4xxx_host_attrs,
 213         .host_reset             = qla4xxx_host_reset,
 214         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 215 };
 216
 217 static struct iscsi_transport qla4xxx_iscsi_transport = {
 218         .owner                  = THIS_MODULE,
 219         .name                   = DRIVER_NAME,
 220         .caps                   = CAP_TEXT_NEGO |
 221                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 222                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 223                                   CAP_MULTI_R2T,
 224         .attr_is_visible        = qla4_attr_is_visible,
 225         .create_session         = qla4xxx_session_create,
 226         .destroy_session        = qla4xxx_session_destroy,
 227         .start_conn             = qla4xxx_conn_start,
 228         .create_conn            = qla4xxx_conn_create,
 229         .bind_conn              = qla4xxx_conn_bind,
 230         .stop_conn              = iscsi_conn_stop,
 231         .destroy_conn           = qla4xxx_conn_destroy,
 232         .set_param              = iscsi_set_param,
 233         .get_conn_param         = qla4xxx_conn_get_param,
 234         .get_session_param      = qla4xxx_session_get_param,
 235         .get_ep_param           = qla4xxx_get_ep_param,
 236         .ep_connect             = qla4xxx_ep_connect,
 237         .ep_poll                = qla4xxx_ep_poll,
 238         .ep_disconnect          = qla4xxx_ep_disconnect,
 239         .get_stats              = qla4xxx_conn_get_stats,
 240         .send_pdu               = iscsi_conn_send_pdu,
 241         .xmit_task              = qla4xxx_task_xmit,
 242         .cleanup_task           = qla4xxx_task_cleanup,
 243         .alloc_pdu              = qla4xxx_alloc_pdu,
 244
 245         .get_host_param         = qla4xxx_host_get_param,
 246         .set_iface_param        = qla4xxx_iface_set_param,
 247         .get_iface_param        = qla4xxx_get_iface_param,
 248         .bsg_request            = qla4xxx_bsg_request,
 249         .send_ping              = qla4xxx_send_ping,
 250         .get_chap               = qla4xxx_get_chap_list,
 251         .delete_chap            = qla4xxx_delete_chap,
 252         .set_chap               = qla4xxx_set_chap_entry,
 253         .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
 254         .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
 255         .new_flashnode          = qla4xxx_sysfs_ddb_add,
 256         .del_flashnode          = qla4xxx_sysfs_ddb_delete,
 257         .login_flashnode        = qla4xxx_sysfs_ddb_login,
 258         .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
 259         .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
 260         .get_host_stats         = qla4xxx_get_host_stats,
 261 };
 262
 263 static struct scsi_transport_template *qla4xxx_scsi_transport;
 264
 265 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 266                              uint32_t iface_type, uint32_t payload_size,
 267                              uint32_t pid, struct sockaddr *dst_addr)
 268 {
 269         struct scsi_qla_host *ha = to_qla_host(shost);
 270         struct sockaddr_in *addr;
 271         struct sockaddr_in6 *addr6;
 272         uint32_t options = 0;
 273         uint8_t ipaddr[IPv6_ADDR_LEN];
 274         int rval;
 275
 276         memset(ipaddr, 0, IPv6_ADDR_LEN);
 277         /* IPv4 to IPv4 */
 278         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 279             (dst_addr->sa_family == AF_INET)) {
 280                 addr = (struct sockaddr_in *)dst_addr;
 281                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 282                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 283                                   "dest: %pI4\n", __func__,
 284                                   &ha->ip_config.ip_address, ipaddr));
 285                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 286                                          ipaddr);
 287                 if (rval)
 288                         rval = -EINVAL;
 289         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 290                    (dst_addr->sa_family == AF_INET6)) {
 291                 /* IPv6 to IPv6 */
 292                 addr6 = (struct sockaddr_in6 *)dst_addr;
 293                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 294
 295                 options |= PING_IPV6_PROTOCOL_ENABLE;
 296
 297                 /* Ping using LinkLocal address */
 298                 if ((iface_num == 0) || (iface_num == 1)) {
 299                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 300                                           "src: %pI6 dest: %pI6\n", __func__,
 301                                           &ha->ip_config.ipv6_link_local_addr,
 302                                           ipaddr));
 303                         options |= PING_IPV6_LINKLOCAL_ADDR;
 304                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 305                                                  pid, ipaddr);
 306                 } else {
 307                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 308                                    "not supported\n", __func__, iface_num);
 309                         rval = -ENOSYS;
 310                         goto exit_send_ping;
 311                 }
 312
 313                 /*
 314                  * If ping using LinkLocal address fails, try ping using
 315                  * IPv6 address
 316                  */
 317                 if (rval != QLA_SUCCESS) {
 318                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 319                         if (iface_num == 0) {
 320                                 options |= PING_IPV6_ADDR0;
 321                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 322                                                   "Ping src: %pI6 "
 323                                                   "dest: %pI6\n", __func__,
 324                                                   &ha->ip_config.ipv6_addr0,
 325                                                   ipaddr));
 326                         } else if (iface_num == 1) {
 327                                 options |= PING_IPV6_ADDR1;
 328                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 329                                                   "Ping src: %pI6 "
 330                                                   "dest: %pI6\n", __func__,
 331                                                   &ha->ip_config.ipv6_addr1,
 332                                                   ipaddr));
 333                         }
 334                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 335                                                  pid, ipaddr);
 336                         if (rval)
 337                                 rval = -EINVAL;
 338                 }
 339         } else
 340                 rval = -ENOSYS;
 341 exit_send_ping:
 342         return rval;
 343 }
 344
 345 static umode_t qla4_attr_is_visible(int param_type, int param)
 346 {
 347         switch (param_type) {
 348         case ISCSI_HOST_PARAM:
 349                 switch (param) {
 350                 case ISCSI_HOST_PARAM_HWADDRESS:
 351                 case ISCSI_HOST_PARAM_IPADDRESS:
 352                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 353                 case ISCSI_HOST_PARAM_PORT_STATE:
 354                 case ISCSI_HOST_PARAM_PORT_SPEED:
 355                         return S_IRUGO;
 356                 default:
 357                         return 0;
 358                 }
 359         case ISCSI_PARAM:
 360                 switch (param) {
 361                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 362                 case ISCSI_PARAM_PERSISTENT_PORT:
 363                 case ISCSI_PARAM_CONN_ADDRESS:
 364                 case ISCSI_PARAM_CONN_PORT:
 365                 case ISCSI_PARAM_TARGET_NAME:
 366                 case ISCSI_PARAM_TPGT:
 367                 case ISCSI_PARAM_TARGET_ALIAS:
 368                 case ISCSI_PARAM_MAX_BURST:
 369                 case ISCSI_PARAM_MAX_R2T:
 370                 case ISCSI_PARAM_FIRST_BURST:
 371                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 372                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 373                 case ISCSI_PARAM_IFACE_NAME:
 374                 case ISCSI_PARAM_CHAP_OUT_IDX:
 375                 case ISCSI_PARAM_CHAP_IN_IDX:
 376                 case ISCSI_PARAM_USERNAME:
 377                 case ISCSI_PARAM_PASSWORD:
 378                 case ISCSI_PARAM_USERNAME_IN:
 379                 case ISCSI_PARAM_PASSWORD_IN:
 380                 case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
 381                 case ISCSI_PARAM_DISCOVERY_SESS:
 382                 case ISCSI_PARAM_PORTAL_TYPE:
 383                 case ISCSI_PARAM_CHAP_AUTH_EN:
 384                 case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
 385                 case ISCSI_PARAM_BIDI_CHAP_EN:
 386                 case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
 387                 case ISCSI_PARAM_DEF_TIME2WAIT:
 388                 case ISCSI_PARAM_DEF_TIME2RETAIN:
 389                 case ISCSI_PARAM_HDRDGST_EN:
 390                 case ISCSI_PARAM_DATADGST_EN:
 391                 case ISCSI_PARAM_INITIAL_R2T_EN:
 392                 case ISCSI_PARAM_IMM_DATA_EN:
 393                 case ISCSI_PARAM_PDU_INORDER_EN:
 394                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
 395                 case ISCSI_PARAM_MAX_SEGMENT_SIZE:
 396                 case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
 397                 case ISCSI_PARAM_TCP_WSF_DISABLE:
 398                 case ISCSI_PARAM_TCP_NAGLE_DISABLE:
 399                 case ISCSI_PARAM_TCP_TIMER_SCALE:
 400                 case ISCSI_PARAM_TCP_TIMESTAMP_EN:
 401                 case ISCSI_PARAM_TCP_XMIT_WSF:
 402                 case ISCSI_PARAM_TCP_RECV_WSF:
 403                 case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
 404                 case ISCSI_PARAM_IPV4_TOS:
 405                 case ISCSI_PARAM_IPV6_TC:
 406                 case ISCSI_PARAM_IPV6_FLOW_LABEL:
 407                 case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
 408                 case ISCSI_PARAM_KEEPALIVE_TMO:
 409                 case ISCSI_PARAM_LOCAL_PORT:
 410                 case ISCSI_PARAM_ISID:
 411                 case ISCSI_PARAM_TSID:
 412                 case ISCSI_PARAM_DEF_TASKMGMT_TMO:
 413                 case ISCSI_PARAM_ERL:
 414                 case ISCSI_PARAM_STATSN:
 415                 case ISCSI_PARAM_EXP_STATSN:
 416                 case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
 417                 case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
 418                 case ISCSI_PARAM_LOCAL_IPADDR:
 419                         return S_IRUGO;
 420                 default:
 421                         return 0;
 422                 }
 423         case ISCSI_NET_PARAM:
 424                 switch (param) {
 425                 case ISCSI_NET_PARAM_IPV4_ADDR:
 426                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 427                 case ISCSI_NET_PARAM_IPV4_GW:
 428                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 429                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 430                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 431                 case ISCSI_NET_PARAM_IPV6_ADDR:
 432                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 433                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 434                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 435                 case ISCSI_NET_PARAM_VLAN_ID:
 436                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 437                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 438                 case ISCSI_NET_PARAM_MTU:
 439                 case ISCSI_NET_PARAM_PORT:
 440                 case ISCSI_NET_PARAM_IPADDR_STATE:
 441                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
 442                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
 443                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
 444                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
 445                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
 446                 case ISCSI_NET_PARAM_TCP_WSF:
 447                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
 448                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
 449                 case ISCSI_NET_PARAM_CACHE_ID:
 450                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
 451                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
 452                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
 453                 case ISCSI_NET_PARAM_IPV4_TOS:
 454                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
 455                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
 456                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
 457                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
 458                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
 459                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
 460                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
 461                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
 462                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
 463                 case ISCSI_NET_PARAM_REDIRECT_EN:
 464                 case ISCSI_NET_PARAM_IPV4_TTL:
 465                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
 466                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
 467                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
 468                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
 469                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
 470                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
 471                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
 472                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
 473                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
 474                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
 475                         return S_IRUGO;
 476                 default:
 477                         return 0;
 478                 }
 479         case ISCSI_IFACE_PARAM:
 480                 switch (param) {
 481                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
 482                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
 483                 case ISCSI_IFACE_PARAM_DATADGST_EN:
 484                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
 485                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
 486                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
 487                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
 488                 case ISCSI_IFACE_PARAM_ERL:
 489                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
 490                 case ISCSI_IFACE_PARAM_FIRST_BURST:
 491                 case ISCSI_IFACE_PARAM_MAX_R2T:
 492                 case ISCSI_IFACE_PARAM_MAX_BURST:
 493                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
 494                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
 495                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
 496                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
 497                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
 498                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
 499                         return S_IRUGO;
 500                 default:
 501                         return 0;
 502                 }
 503         case ISCSI_FLASHNODE_PARAM:
 504                 switch (param) {
 505                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
 506                 case ISCSI_FLASHNODE_PORTAL_TYPE:
 507                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
 508                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
 509                 case ISCSI_FLASHNODE_ENTRY_EN:
 510                 case ISCSI_FLASHNODE_HDR_DGST_EN:
 511                 case ISCSI_FLASHNODE_DATA_DGST_EN:
 512                 case ISCSI_FLASHNODE_IMM_DATA_EN:
 513                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
 514                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
 515                 case ISCSI_FLASHNODE_PDU_INORDER:
 516                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
 517                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
 518                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
 519                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
 520                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
 521                 case ISCSI_FLASHNODE_ERL:
 522                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
 523                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
 524                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
 525                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
 526                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
 527                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
 528                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
 529                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
 530                 case ISCSI_FLASHNODE_FIRST_BURST:
 531                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
 532                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
 533                 case ISCSI_FLASHNODE_MAX_R2T:
 534                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
 535                 case ISCSI_FLASHNODE_ISID:
 536                 case ISCSI_FLASHNODE_TSID:
 537                 case ISCSI_FLASHNODE_PORT:
 538                 case ISCSI_FLASHNODE_MAX_BURST:
 539                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
 540                 case ISCSI_FLASHNODE_IPADDR:
 541                 case ISCSI_FLASHNODE_ALIAS:
 542                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
 543                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
 544                 case ISCSI_FLASHNODE_LOCAL_PORT:
 545                 case ISCSI_FLASHNODE_IPV4_TOS:
 546                 case ISCSI_FLASHNODE_IPV6_TC:
 547                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
 548                 case ISCSI_FLASHNODE_NAME:
 549                 case ISCSI_FLASHNODE_TPGT:
 550                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
 551                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
 552                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
 553                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
 554                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
 555                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
 556                 case ISCSI_FLASHNODE_USERNAME:
 557                 case ISCSI_FLASHNODE_PASSWORD:
 558                 case ISCSI_FLASHNODE_STATSN:
 559                 case ISCSI_FLASHNODE_EXP_STATSN:
 560                 case ISCSI_FLASHNODE_IS_BOOT_TGT:
 561                         return S_IRUGO;
 562                 default:
 563                         return 0;
 564                 }
 565         }
 566
 567         return 0;
 568 }
 569
 570 /**
 571  * qla4xxx_create chap_list - Create CHAP list from FLASH
 572  * @ha: pointer to adapter structure
 573  *
 574  * Read flash and make a list of CHAP entries, during login when a CHAP entry
 575  * is received, it will be checked in this list. If entry exist then the CHAP
 576  * entry index is set in the DDB. If CHAP entry does not exist in this list
 577  * then a new entry is added in FLASH in CHAP table and the index obtained is
 578  * used in the DDB.
 579  **/
 580 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
 581 {
 582         int rval = 0;
 583         uint8_t *chap_flash_data = NULL;
 584         uint32_t offset;
 585         dma_addr_t chap_dma;
 586         uint32_t chap_size = 0;
 587
 588         if (is_qla40XX(ha))
 589                 chap_size = MAX_CHAP_ENTRIES_40XX *
 590                             sizeof(struct ql4_chap_table);
 591         else    /* Single region contains CHAP info for both
 592                  * ports which is divided into half for each port.
 593                  */
 594                 chap_size = ha->hw.flt_chap_size / 2;
 595
 596         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
 597                                              &chap_dma, GFP_KERNEL);
 598         if (!chap_flash_data) {
 599                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
 600                 return;
 601         }
 602
 603         if (is_qla40XX(ha)) {
 604                 offset = FLASH_CHAP_OFFSET;
 605         } else {
 606                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 607                 if (ha->port_num == 1)
 608                         offset += chap_size;
 609         }
 610
 611         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 612         if (rval != QLA_SUCCESS)
 613                 goto exit_chap_list;
 614
 615         if (ha->chap_list == NULL)
 616                 ha->chap_list = vmalloc(chap_size);
 617         if (ha->chap_list == NULL) {
 618                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
 619                 goto exit_chap_list;
 620         }
 621
 622         memset(ha->chap_list, 0, chap_size);
 623         memcpy(ha->chap_list, chap_flash_data, chap_size);
 624
 625 exit_chap_list:
 626         dma_free_coherent(&ha->pdev->dev, chap_size, chap_flash_data, chap_dma);
 627 }
 628
 629 static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
 630                                      int16_t chap_index,
 631                                      struct ql4_chap_table **chap_entry)
 632 {
 633         int rval = QLA_ERROR;
 634         int max_chap_entries;
 635
 636         if (!ha->chap_list) {
 637                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 638                 rval = QLA_ERROR;
 639                 goto exit_get_chap;
 640         }
 641
 642         if (is_qla80XX(ha))
 643                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 644                                    sizeof(struct ql4_chap_table);
 645         else
 646                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 647
 648         if (chap_index > max_chap_entries) {
 649                 ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
 650                 rval = QLA_ERROR;
 651                 goto exit_get_chap;
 652         }
 653
 654         *chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
 655         if ((*chap_entry)->cookie !=
 656              __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
 657                 rval = QLA_ERROR;
 658                 *chap_entry = NULL;
 659         } else {
 660                 rval = QLA_SUCCESS;
 661         }
 662
 663 exit_get_chap:
 664         return rval;
 665 }
 666
 667 /**
 668  * qla4xxx_find_free_chap_index - Find the first free chap index
 669  * @ha: pointer to adapter structure
 670  * @chap_index: CHAP index to be returned
 671  *
 672  * Find the first free chap index available in the chap table
 673  *
 674  * Note: Caller should acquire the chap lock before getting here.
 675  **/
 676 static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
 677                                         uint16_t *chap_index)
 678 {
 679         int i, rval;
 680         int free_index = -1;
 681         int max_chap_entries = 0;
 682         struct ql4_chap_table *chap_table;
 683
 684         if (is_qla80XX(ha))
 685                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 686                                                 sizeof(struct ql4_chap_table);
 687         else
 688                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 689
 690         if (!ha->chap_list) {
 691                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 692                 rval = QLA_ERROR;
 693                 goto exit_find_chap;
 694         }
 695
 696         for (i = 0; i < max_chap_entries; i++) {
 697                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 698
 699                 if ((chap_table->cookie !=
 700                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
 701                    (i > MAX_RESRV_CHAP_IDX)) {
 702                                 free_index = i;
 703                                 break;
 704                 }
 705         }
 706
 707         if (free_index != -1) {
 708                 *chap_index = free_index;
 709                 rval = QLA_SUCCESS;
 710         } else {
 711                 rval = QLA_ERROR;
 712         }
 713
 714 exit_find_chap:
 715         return rval;
 716 }
 717
 718 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 719                                   uint32_t *num_entries, char *buf)
 720 {
 721         struct scsi_qla_host *ha = to_qla_host(shost);
 722         struct ql4_chap_table *chap_table;
 723         struct iscsi_chap_rec *chap_rec;
 724         int max_chap_entries = 0;
 725         int valid_chap_entries = 0;
 726         int ret = 0, i;
 727
 728         if (is_qla80XX(ha))
 729                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 730                                         sizeof(struct ql4_chap_table);
 731         else
 732                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 733
 734         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 735                         __func__, *num_entries, chap_tbl_idx);
 736
 737         if (!buf) {
 738                 ret = -ENOMEM;
 739                 goto exit_get_chap_list;
 740         }
 741
 742         qla4xxx_create_chap_list(ha);
 743
 744         chap_rec = (struct iscsi_chap_rec *) buf;
 745         mutex_lock(&ha->chap_sem);
 746         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 747                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 748                 if (chap_table->cookie !=
 749                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 750                         continue;
 751
 752                 chap_rec->chap_tbl_idx = i;
 753                 strlcpy(chap_rec->username, chap_table->name,
 754                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 755                 strlcpy(chap_rec->password, chap_table->secret,
 756                         QL4_CHAP_MAX_SECRET_LEN);
 757                 chap_rec->password_length = chap_table->secret_len;
 758
 759                 if (chap_table->flags & BIT_7) /* local */
 760                         chap_rec->chap_type = CHAP_TYPE_OUT;
 761
 762                 if (chap_table->flags & BIT_6) /* peer */
 763                         chap_rec->chap_type = CHAP_TYPE_IN;
 764
 765                 chap_rec++;
 766
 767                 valid_chap_entries++;
 768                 if (valid_chap_entries == *num_entries)
 769                         break;
 770                 else
 771                         continue;
 772         }
 773         mutex_unlock(&ha->chap_sem);
 774
 775 exit_get_chap_list:
 776         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 777                         __func__,  valid_chap_entries);
 778         *num_entries = valid_chap_entries;
 779         return ret;
 780 }
 781
 782 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 783 {
 784         int ret = 0;
 785         uint16_t *chap_tbl_idx = (uint16_t *) data;
 786         struct iscsi_cls_session *cls_session;
 787         struct iscsi_session *sess;
 788         struct ddb_entry *ddb_entry;
 789
 790         if (!iscsi_is_session_dev(dev))
 791                 goto exit_is_chap_active;
 792
 793         cls_session = iscsi_dev_to_session(dev);
 794         sess = cls_session->dd_data;
 795         ddb_entry = sess->dd_data;
 796
 797         if (iscsi_session_chkready(cls_session))
 798                 goto exit_is_chap_active;
 799
 800         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 801                 ret = 1;
 802
 803 exit_is_chap_active:
 804         return ret;
 805 }
 806
 807 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 808                                   uint16_t chap_tbl_idx)
 809 {
 810         int ret = 0;
 811
 812         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 813                                     __qla4xxx_is_chap_active);
 814
 815         return ret;
 816 }
 817
 818 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 819 {
 820         struct scsi_qla_host *ha = to_qla_host(shost);
 821         struct ql4_chap_table *chap_table;
 822         dma_addr_t chap_dma;
 823         int max_chap_entries = 0;
 824         uint32_t offset = 0;
 825         uint32_t chap_size;
 826         int ret = 0;
 827
 828         chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 829         if (chap_table == NULL)
 830                 return -ENOMEM;
 831
 832         memset(chap_table, 0, sizeof(struct ql4_chap_table));
 833
 834         if (is_qla80XX(ha))
 835                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 836                                    sizeof(struct ql4_chap_table);
 837         else
 838                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 839
 840         if (chap_tbl_idx > max_chap_entries) {
 841                 ret = -EINVAL;
 842                 goto exit_delete_chap;
 843         }
 844
 845         /* Check if chap index is in use.
 846          * If chap is in use don't delet chap entry */
 847         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 848         if (ret) {
 849                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 850                            "delete from flash\n", chap_tbl_idx);
 851                 ret = -EBUSY;
 852                 goto exit_delete_chap;
 853         }
 854
 855         chap_size = sizeof(struct ql4_chap_table);
 856         if (is_qla40XX(ha))
 857                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 858         else {
 859                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 860                 /* flt_chap_size is CHAP table size for both ports
 861                  * so divide it by 2 to calculate the offset for second port
 862                  */
 863                 if (ha->port_num == 1)
 864                         offset += (ha->hw.flt_chap_size / 2);
 865                 offset += (chap_tbl_idx * chap_size);
 866         }
 867
 868         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 869         if (ret != QLA_SUCCESS) {
 870                 ret = -EINVAL;
 871                 goto exit_delete_chap;
 872         }
 873
 874         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 875                           __le16_to_cpu(chap_table->cookie)));
 876
 877         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 878                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 879                 goto exit_delete_chap;
 880         }
 881
 882         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 883
 884         offset = FLASH_CHAP_OFFSET |
 885                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 886         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 887                                 FLASH_OPT_RMW_COMMIT);
 888         if (ret == QLA_SUCCESS && ha->chap_list) {
 889                 mutex_lock(&ha->chap_sem);
 890                 /* Update ha chap_list cache */
 891                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 892                         chap_table, sizeof(struct ql4_chap_table));
 893                 mutex_unlock(&ha->chap_sem);
 894         }
 895         if (ret != QLA_SUCCESS)
 896                 ret =  -EINVAL;
 897
 898 exit_delete_chap:
 899         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 900         return ret;
 901 }
 902
 903 /**
 904  * qla4xxx_set_chap_entry - Make chap entry with given information
 905  * @shost: pointer to host
 906  * @data: chap info - credentials, index and type to make chap entry
 907  * @len: length of data
 908  *
 909  * Add or update chap entry with the given information
 910  **/
 911 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
 912 {
 913         struct scsi_qla_host *ha = to_qla_host(shost);
 914         struct iscsi_chap_rec chap_rec;
 915         struct ql4_chap_table *chap_entry = NULL;
 916         struct iscsi_param_info *param_info;
 917         struct nlattr *attr;
 918         int max_chap_entries = 0;
 919         int type;
 920         int rem = len;
 921         int rc = 0;
 922         int size;
 923
 924         memset(&chap_rec, 0, sizeof(chap_rec));
 925
 926         nla_for_each_attr(attr, data, len, rem) {
 927                 param_info = nla_data(attr);
 928
 929                 switch (param_info->param) {
 930                 case ISCSI_CHAP_PARAM_INDEX:
 931                         chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
 932                         break;
 933                 case ISCSI_CHAP_PARAM_CHAP_TYPE:
 934                         chap_rec.chap_type = param_info->value[0];
 935                         break;
 936                 case ISCSI_CHAP_PARAM_USERNAME:
 937                         size = min_t(size_t, sizeof(chap_rec.username),
 938                                      param_info->len);
 939                         memcpy(chap_rec.username, param_info->value, size);
 940                         break;
 941                 case ISCSI_CHAP_PARAM_PASSWORD:
 942                         size = min_t(size_t, sizeof(chap_rec.password),
 943                                      param_info->len);
 944                         memcpy(chap_rec.password, param_info->value, size);
 945                         break;
 946                 case ISCSI_CHAP_PARAM_PASSWORD_LEN:
 947                         chap_rec.password_length = param_info->value[0];
 948                         break;
 949                 default:
 950                         ql4_printk(KERN_ERR, ha,
 951                                    "%s: No such sysfs attribute\n", __func__);
 952                         rc = -ENOSYS;
 953                         goto exit_set_chap;
 954                 };
 955         }
 956
 957         if (chap_rec.chap_type == CHAP_TYPE_IN)
 958                 type = BIDI_CHAP;
 959         else
 960                 type = LOCAL_CHAP;
 961
 962         if (is_qla80XX(ha))
 963                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 964                                    sizeof(struct ql4_chap_table);
 965         else
 966                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 967
 968         mutex_lock(&ha->chap_sem);
 969         if (chap_rec.chap_tbl_idx < max_chap_entries) {
 970                 rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
 971                                                &chap_entry);
 972                 if (!rc) {
 973                         if (!(type == qla4xxx_get_chap_type(chap_entry))) {
 974                                 ql4_printk(KERN_INFO, ha,
 975                                            "Type mismatch for CHAP entry %d\n",
 976                                            chap_rec.chap_tbl_idx);
 977                                 rc = -EINVAL;
 978                                 goto exit_unlock_chap;
 979                         }
 980
 981                         /* If chap index is in use then don't modify it */
 982                         rc = qla4xxx_is_chap_active(shost,
 983                                                     chap_rec.chap_tbl_idx);
 984                         if (rc) {
 985                                 ql4_printk(KERN_INFO, ha,
 986                                            "CHAP entry %d is in use\n",
 987                                            chap_rec.chap_tbl_idx);
 988                                 rc = -EBUSY;
 989                                 goto exit_unlock_chap;
 990                         }
 991                 }
 992         } else {
 993                 rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
 994                 if (rc) {
 995                         ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
 996                         rc = -EBUSY;
 997                         goto exit_unlock_chap;
 998                 }
 999         }
1000
1001         rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
1002                               chap_rec.chap_tbl_idx, type);
1003
1004 exit_unlock_chap:
1005         mutex_unlock(&ha->chap_sem);
1006
1007 exit_set_chap:
1008         return rc;
1009 }
1010
1011
1012 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
1013 {
1014         struct scsi_qla_host *ha = to_qla_host(shost);
1015         struct iscsi_offload_host_stats *host_stats = NULL;
1016         int host_stats_size;
1017         int ret = 0;
1018         int ddb_idx = 0;
1019         struct ql_iscsi_stats *ql_iscsi_stats = NULL;
1020         int stats_size;
1021         dma_addr_t iscsi_stats_dma;
1022
1023         DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));
1024
1025         host_stats_size = sizeof(struct iscsi_offload_host_stats);
1026
1027         if (host_stats_size != len) {
1028                 ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
1029                            __func__, len, host_stats_size);
1030                 ret = -EINVAL;
1031                 goto exit_host_stats;
1032         }
1033         host_stats = (struct iscsi_offload_host_stats *)buf;
1034
1035         if (!buf) {
1036                 ret = -ENOMEM;
1037                 goto exit_host_stats;
1038         }
1039
1040         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1041
1042         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1043                                             &iscsi_stats_dma, GFP_KERNEL);
1044         if (!ql_iscsi_stats) {
1045                 ql4_printk(KERN_ERR, ha,
1046                            "Unable to allocate memory for iscsi stats\n");
1047                 ret = -ENOMEM;
1048                 goto exit_host_stats;
1049         }
1050
1051         ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
1052                                      iscsi_stats_dma);
1053         if (ret != QLA_SUCCESS) {
1054                 ql4_printk(KERN_ERR, ha,
1055                            "Unable to retrieve iscsi stats\n");
1056                 ret = -EIO;
1057                 goto exit_host_stats;
1058         }
1059         host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
1060         host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
1061         host_stats->mactx_multicast_frames =
1062                         le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
1063         host_stats->mactx_broadcast_frames =
1064                         le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
1065         host_stats->mactx_pause_frames =
1066                         le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
1067         host_stats->mactx_control_frames =
1068                         le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
1069         host_stats->mactx_deferral =
1070                         le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
1071         host_stats->mactx_excess_deferral =
1072                         le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
1073         host_stats->mactx_late_collision =
1074                         le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
1075         host_stats->mactx_abort = le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
1076         host_stats->mactx_single_collision =
1077                         le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
1078         host_stats->mactx_multiple_collision =
1079                         le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
1080         host_stats->mactx_collision =
1081                         le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
1082         host_stats->mactx_frames_dropped =
1083                         le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
1084         host_stats->mactx_jumbo_frames =
1085                         le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
1086         host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
1087         host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
1088         host_stats->macrx_unknown_control_frames =
1089                 le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
1090         host_stats->macrx_pause_frames =
1091                         le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
1092         host_stats->macrx_control_frames =
1093                         le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
1094         host_stats->macrx_dribble =
1095                         le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
1096         host_stats->macrx_frame_length_error =
1097                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
1098         host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
1099         host_stats->macrx_carrier_sense_error =
1100                 le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
1101         host_stats->macrx_frame_discarded =
1102                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
1103         host_stats->macrx_frames_dropped =
1104                         le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
1105         host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
1106         host_stats->mac_encoding_error =
1107                         le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
1108         host_stats->macrx_length_error_large =
1109                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
1110         host_stats->macrx_length_error_small =
1111                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
1112         host_stats->macrx_multicast_frames =
1113                         le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
1114         host_stats->macrx_broadcast_frames =
1115                         le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
1116         host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
1117         host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
1118         host_stats->iptx_fragments =
1119                         le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
1120         host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
1121         host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
1122         host_stats->iprx_fragments =
1123                         le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
1124         host_stats->ip_datagram_reassembly =
1125                         le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
1126         host_stats->ip_invalid_address_error =
1127                         le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
1128         host_stats->ip_error_packets =
1129                         le64_to_cpu(ql_iscsi_stats->ip_error_packets);
1130         host_stats->ip_fragrx_overlap =
1131                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
1132         host_stats->ip_fragrx_outoforder =
1133                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
1134         host_stats->ip_datagram_reassembly_timeout =
1135                 le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
1136         host_stats->ipv6tx_packets =
1137                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
1138         host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
1139         host_stats->ipv6tx_fragments =
1140                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
1141         host_stats->ipv6rx_packets =
1142                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
1143         host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
1144         host_stats->ipv6rx_fragments =
1145                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
1146         host_stats->ipv6_datagram_reassembly =
1147                         le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
1148         host_stats->ipv6_invalid_address_error =
1149                 le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
1150         host_stats->ipv6_error_packets =
1151                         le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
1152         host_stats->ipv6_fragrx_overlap =
1153                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
1154         host_stats->ipv6_fragrx_outoforder =
1155                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
1156         host_stats->ipv6_datagram_reassembly_timeout =
1157                 le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
1158         host_stats->tcptx_segments =
1159                         le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
1160         host_stats->tcptx_bytes = le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
1161         host_stats->tcprx_segments =
1162                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
1163         host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
1164         host_stats->tcp_duplicate_ack_retx =
1165                         le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
1166         host_stats->tcp_retx_timer_expired =
1167                         le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
1168         host_stats->tcprx_duplicate_ack =
1169                         le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
1170         host_stats->tcprx_pure_ackr =
1171                         le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
1172         host_stats->tcptx_delayed_ack =
1173                         le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
1174         host_stats->tcptx_pure_ack =
1175                         le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
1176         host_stats->tcprx_segment_error =
1177                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
1178         host_stats->tcprx_segment_outoforder =
1179                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
1180         host_stats->tcprx_window_probe =
1181                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
1182         host_stats->tcprx_window_update =
1183                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
1184         host_stats->tcptx_window_probe_persist =
1185                 le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
1186         host_stats->ecc_error_correction =
1187                         le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
1188         host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
1189         host_stats->iscsi_data_bytes_tx =
1190                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
1191         host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
1192         host_stats->iscsi_data_bytes_rx =
1193                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
1194         host_stats->iscsi_io_completed =
1195                         le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
1196         host_stats->iscsi_unexpected_io_rx =
1197                         le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
1198         host_stats->iscsi_format_error =
1199                         le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
1200         host_stats->iscsi_hdr_digest_error =
1201                         le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
1202         host_stats->iscsi_data_digest_error =
1203                         le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
1204         host_stats->iscsi_sequence_error =
1205                         le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
1206 exit_host_stats:
1207         if (ql_iscsi_stats)
1208                 dma_free_coherent(&ha->pdev->dev, host_stats_size,
1209                                   ql_iscsi_stats, iscsi_stats_dma);
1210
1211         ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
1212                    __func__);
1213         return ret;
1214 }
1215
1216 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
1217                                    enum iscsi_param_type param_type,
1218                                    int param, char *buf)
1219 {
1220         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
1221         struct scsi_qla_host *ha = to_qla_host(shost);
1222         int ival;
1223         char *pval = NULL;
1224         int len = -ENOSYS;
1225
1226         if (param_type == ISCSI_NET_PARAM) {
1227                 switch (param) {
1228                 case ISCSI_NET_PARAM_IPV4_ADDR:
1229                         len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1230                         break;
1231                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1232                         len = sprintf(buf, "%pI4\n",
1233                                       &ha->ip_config.subnet_mask);
1234                         break;
1235                 case ISCSI_NET_PARAM_IPV4_GW:
1236                         len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
1237                         break;
1238                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1239                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1240                                 OP_STATE(ha->ip_config.ipv4_options,
1241                                          IPOPT_IPV4_PROTOCOL_ENABLE, pval);
1242                         } else {
1243                                 OP_STATE(ha->ip_config.ipv6_options,
1244                                          IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
1245                         }
1246
1247                         len = sprintf(buf, "%s\n", pval);
1248                         break;
1249                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1250                         len = sprintf(buf, "%s\n",
1251                                       (ha->ip_config.tcp_options &
1252                                        TCPOPT_DHCP_ENABLE) ?
1253                                       "dhcp" : "static");
1254                         break;
1255                 case ISCSI_NET_PARAM_IPV6_ADDR:
1256                         if (iface->iface_num == 0)
1257                                 len = sprintf(buf, "%pI6\n",
1258                                               &ha->ip_config.ipv6_addr0);
1259                         if (iface->iface_num == 1)
1260                                 len = sprintf(buf, "%pI6\n",
1261                                               &ha->ip_config.ipv6_addr1);
1262                         break;
1263                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1264                         len = sprintf(buf, "%pI6\n",
1265                                       &ha->ip_config.ipv6_link_local_addr);
1266                         break;
1267                 case ISCSI_NET_PARAM_IPV6_ROUTER:
1268                         len = sprintf(buf, "%pI6\n",
1269                                       &ha->ip_config.ipv6_default_router_addr);
1270                         break;
1271                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1272                         pval = (ha->ip_config.ipv6_addl_options &
1273                                 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
1274                                 "nd" : "static";
1275
1276                         len = sprintf(buf, "%s\n", pval);
1277                         break;
1278                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1279                         pval = (ha->ip_config.ipv6_addl_options &
1280                                 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
1281                                 "auto" : "static";
1282
1283                         len = sprintf(buf, "%s\n", pval);
1284                         break;
1285                 case ISCSI_NET_PARAM_VLAN_ID:
1286                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1287                                 ival = ha->ip_config.ipv4_vlan_tag &
1288                                        ISCSI_MAX_VLAN_ID;
1289                         else
1290                                 ival = ha->ip_config.ipv6_vlan_tag &
1291                                        ISCSI_MAX_VLAN_ID;
1292
1293                         len = sprintf(buf, "%d\n", ival);
1294                         break;
1295                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1296                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1297                                 ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
1298                                        ISCSI_MAX_VLAN_PRIORITY;
1299                         else
1300                                 ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
1301                                        ISCSI_MAX_VLAN_PRIORITY;
1302
1303                         len = sprintf(buf, "%d\n", ival);
1304                         break;
1305                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1306                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1307                                 OP_STATE(ha->ip_config.ipv4_options,
1308                                          IPOPT_VLAN_TAGGING_ENABLE, pval);
1309                         } else {
1310                                 OP_STATE(ha->ip_config.ipv6_options,
1311                                          IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
1312                         }
1313                         len = sprintf(buf, "%s\n", pval);
1314                         break;
1315                 case ISCSI_NET_PARAM_MTU:
1316                         len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
1317                         break;
1318                 case ISCSI_NET_PARAM_PORT:
1319                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1320                                 len = sprintf(buf, "%d\n",
1321                                               ha->ip_config.ipv4_port);
1322                         else
1323                                 len = sprintf(buf, "%d\n",
1324                                               ha->ip_config.ipv6_port);
1325                         break;
1326                 case ISCSI_NET_PARAM_IPADDR_STATE:
1327                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1328                                 pval = iscsi_get_ipaddress_state_name(
1329                                                 ha->ip_config.ipv4_addr_state);
1330                         } else {
1331                                 if (iface->iface_num == 0)
1332                                         pval = iscsi_get_ipaddress_state_name(
1333                                                 ha->ip_config.ipv6_addr0_state);
1334                                 else if (iface->iface_num == 1)
1335                                         pval = iscsi_get_ipaddress_state_name(
1336                                                 ha->ip_config.ipv6_addr1_state);
1337                         }
1338
1339                         len = sprintf(buf, "%s\n", pval);
1340                         break;
1341                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
1342                         pval = iscsi_get_ipaddress_state_name(
1343                                         ha->ip_config.ipv6_link_local_state);
1344                         len = sprintf(buf, "%s\n", pval);
1345                         break;
1346                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
1347                         pval = iscsi_get_router_state_name(
1348                                       ha->ip_config.ipv6_default_router_state);
1349                         len = sprintf(buf, "%s\n", pval);
1350                         break;
1351                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
1352                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1353                                 OP_STATE(~ha->ip_config.tcp_options,
1354                                          TCPOPT_DELAYED_ACK_DISABLE, pval);
1355                         } else {
1356                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1357                                          IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
1358                         }
1359                         len = sprintf(buf, "%s\n", pval);
1360                         break;
1361                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
1362                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1363                                 OP_STATE(~ha->ip_config.tcp_options,
1364                                          TCPOPT_NAGLE_ALGO_DISABLE, pval);
1365                         } else {
1366                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1367                                          IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
1368                         }
1369                         len = sprintf(buf, "%s\n", pval);
1370                         break;
1371                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
1372                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1373                                 OP_STATE(~ha->ip_config.tcp_options,
1374                                          TCPOPT_WINDOW_SCALE_DISABLE, pval);
1375                         } else {
1376                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1377                                          IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
1378                                          pval);
1379                         }
1380                         len = sprintf(buf, "%s\n", pval);
1381                         break;
1382                 case ISCSI_NET_PARAM_TCP_WSF:
1383                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1384                                 len = sprintf(buf, "%d\n",
1385                                               ha->ip_config.tcp_wsf);
1386                         else
1387                                 len = sprintf(buf, "%d\n",
1388                                               ha->ip_config.ipv6_tcp_wsf);
1389                         break;
1390                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
1391                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1392                                 ival = (ha->ip_config.tcp_options &
1393                                         TCPOPT_TIMER_SCALE) >> 1;
1394                         else
1395                                 ival = (ha->ip_config.ipv6_tcp_options &
1396                                         IPV6_TCPOPT_TIMER_SCALE) >> 1;
1397
1398                         len = sprintf(buf, "%d\n", ival);
1399                         break;
1400                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
1401                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1402                                 OP_STATE(ha->ip_config.tcp_options,
1403                                          TCPOPT_TIMESTAMP_ENABLE, pval);
1404                         } else {
1405                                 OP_STATE(ha->ip_config.ipv6_tcp_options,
1406                                          IPV6_TCPOPT_TIMESTAMP_EN, pval);
1407                         }
1408                         len = sprintf(buf, "%s\n", pval);
1409                         break;
1410                 case ISCSI_NET_PARAM_CACHE_ID:
1411                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1412                                 len = sprintf(buf, "%d\n",
1413                                               ha->ip_config.ipv4_cache_id);
1414                         else
1415                                 len = sprintf(buf, "%d\n",
1416                                               ha->ip_config.ipv6_cache_id);
1417                         break;
1418                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
1419                         OP_STATE(ha->ip_config.tcp_options,
1420                                  TCPOPT_DNS_SERVER_IP_EN, pval);
1421
1422                         len = sprintf(buf, "%s\n", pval);
1423                         break;
1424                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
1425                         OP_STATE(ha->ip_config.tcp_options,
1426                                  TCPOPT_SLP_DA_INFO_EN, pval);
1427
1428                         len = sprintf(buf, "%s\n", pval);
1429                         break;
1430                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
1431                         OP_STATE(ha->ip_config.ipv4_options,
1432                                  IPOPT_IPV4_TOS_EN, pval);
1433
1434                         len = sprintf(buf, "%s\n", pval);
1435                         break;
1436                 case ISCSI_NET_PARAM_IPV4_TOS:
1437                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
1438                         break;
1439                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
1440                         OP_STATE(ha->ip_config.ipv4_options,
1441                                  IPOPT_GRAT_ARP_EN, pval);
1442
1443                         len = sprintf(buf, "%s\n", pval);
1444                         break;
1445                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
1446                         OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
1447                                  pval);
1448
1449                         len = sprintf(buf, "%s\n", pval);
1450                         break;
1451                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
1452                         pval = (ha->ip_config.ipv4_alt_cid_len) ?
1453                                (char *)ha->ip_config.ipv4_alt_cid : "";
1454
1455                         len = sprintf(buf, "%s\n", pval);
1456                         break;
1457                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
1458                         OP_STATE(ha->ip_config.ipv4_options,
1459                                  IPOPT_REQ_VID_EN, pval);
1460
1461                         len = sprintf(buf, "%s\n", pval);
1462                         break;
1463                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
1464                         OP_STATE(ha->ip_config.ipv4_options,
1465                                  IPOPT_USE_VID_EN, pval);
1466
1467                         len = sprintf(buf, "%s\n", pval);
1468                         break;
1469                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
1470                         pval = (ha->ip_config.ipv4_vid_len) ?
1471                                (char *)ha->ip_config.ipv4_vid : "";
1472
1473                         len = sprintf(buf, "%s\n", pval);
1474                         break;
1475                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
1476                         OP_STATE(ha->ip_config.ipv4_options,
1477                                  IPOPT_LEARN_IQN_EN, pval);
1478
1479                         len = sprintf(buf, "%s\n", pval);
1480                         break;
1481                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
1482                         OP_STATE(~ha->ip_config.ipv4_options,
1483                                  IPOPT_FRAGMENTATION_DISABLE, pval);
1484
1485                         len = sprintf(buf, "%s\n", pval);
1486                         break;
1487                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
1488                         OP_STATE(ha->ip_config.ipv4_options,
1489                                  IPOPT_IN_FORWARD_EN, pval);
1490
1491                         len = sprintf(buf, "%s\n", pval);
1492                         break;
1493                 case ISCSI_NET_PARAM_REDIRECT_EN:
1494                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1495                                 OP_STATE(ha->ip_config.ipv4_options,
1496                                          IPOPT_ARP_REDIRECT_EN, pval);
1497                         } else {
1498                                 OP_STATE(ha->ip_config.ipv6_options,
1499                                          IPV6_OPT_REDIRECT_EN, pval);
1500                         }
1501                         len = sprintf(buf, "%s\n", pval);
1502                         break;
1503                 case ISCSI_NET_PARAM_IPV4_TTL:
1504                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
1505                         break;
1506                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
1507                         OP_STATE(ha->ip_config.ipv6_options,
1508                                  IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);
1509
1510                         len = sprintf(buf, "%s\n", pval);
1511                         break;
1512                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
1513                         OP_STATE(ha->ip_config.ipv6_addl_options,
1514                                  IPV6_ADDOPT_MLD_EN, pval);
1515
1516                         len = sprintf(buf, "%s\n", pval);
1517                         break;
1518                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
1519                         len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
1520                         break;
1521                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
1522                         len = sprintf(buf, "%d\n",
1523                                       ha->ip_config.ipv6_traffic_class);
1524                         break;
1525                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
1526                         len = sprintf(buf, "%d\n",
1527                                       ha->ip_config.ipv6_hop_limit);
1528                         break;
1529                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
1530                         len = sprintf(buf, "%d\n",
1531                                       ha->ip_config.ipv6_nd_reach_time);
1532                         break;
1533                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
1534                         len = sprintf(buf, "%d\n",
1535                                       ha->ip_config.ipv6_nd_rexmit_timer);
1536                         break;
1537                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
1538                         len = sprintf(buf, "%d\n",
1539                                       ha->ip_config.ipv6_nd_stale_timeout);
1540                         break;
1541                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
1542                         len = sprintf(buf, "%d\n",
1543                                       ha->ip_config.ipv6_dup_addr_detect_count);
1544                         break;
1545                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
1546                         len = sprintf(buf, "%d\n",
1547                                       ha->ip_config.ipv6_gw_advrt_mtu);
1548                         break;
1549                 default:
1550                         len = -ENOSYS;
1551                 }
1552         } else if (param_type == ISCSI_IFACE_PARAM) {
1553                 switch (param) {
1554                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
1555                         len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
1556                         break;
1557                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
1558                         OP_STATE(ha->ip_config.iscsi_options,
1559                                  ISCSIOPTS_HEADER_DIGEST_EN, pval);
1560
1561                         len = sprintf(buf, "%s\n", pval);
1562                         break;
1563                 case ISCSI_IFACE_PARAM_DATADGST_EN:
1564                         OP_STATE(ha->ip_config.iscsi_options,
1565                                  ISCSIOPTS_DATA_DIGEST_EN, pval);
1566
1567                         len = sprintf(buf, "%s\n", pval);
1568                         break;
1569                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
1570                         OP_STATE(ha->ip_config.iscsi_options,
1571                                  ISCSIOPTS_IMMEDIATE_DATA_EN, pval);
1572
1573                         len = sprintf(buf, "%s\n", pval);
1574                         break;
1575                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
1576                         OP_STATE(ha->ip_config.iscsi_options,
1577                                  ISCSIOPTS_INITIAL_R2T_EN, pval);
1578
1579                         len = sprintf(buf, "%s\n", pval);
1580                         break;
1581                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
1582                         OP_STATE(ha->ip_config.iscsi_options,
1583                                  ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);
1584
1585                         len = sprintf(buf, "%s\n", pval);
1586                         break;
1587                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
1588                         OP_STATE(ha->ip_config.iscsi_options,
1589                                  ISCSIOPTS_DATA_PDU_INORDER_EN, pval);
1590
1591                         len = sprintf(buf, "%s\n", pval);
1592                         break;
1593                 case ISCSI_IFACE_PARAM_ERL:
1594                         len = sprintf(buf, "%d\n",
1595                                       (ha->ip_config.iscsi_options &
1596                                        ISCSIOPTS_ERL));
1597                         break;
1598                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
1599                         len = sprintf(buf, "%u\n",
1600                                       ha->ip_config.iscsi_max_pdu_size *
1601                                       BYTE_UNITS);
1602                         break;
1603                 case ISCSI_IFACE_PARAM_FIRST_BURST:
1604                         len = sprintf(buf, "%u\n",
1605                                       ha->ip_config.iscsi_first_burst_len *
1606                                       BYTE_UNITS);
1607                         break;
1608                 case ISCSI_IFACE_PARAM_MAX_R2T:
1609                         len = sprintf(buf, "%d\n",
1610                                       ha->ip_config.iscsi_max_outstnd_r2t);
1611                         break;
1612                 case ISCSI_IFACE_PARAM_MAX_BURST:
1613                         len = sprintf(buf, "%u\n",
1614                                       ha->ip_config.iscsi_max_burst_len *
1615                                       BYTE_UNITS);
1616                         break;
1617                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
1618                         OP_STATE(ha->ip_config.iscsi_options,
1619                                  ISCSIOPTS_CHAP_AUTH_EN, pval);
1620
1621                         len = sprintf(buf, "%s\n", pval);
1622                         break;
1623                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
1624                         OP_STATE(ha->ip_config.iscsi_options,
1625                                  ISCSIOPTS_BIDI_CHAP_EN, pval);
1626
1627                         len = sprintf(buf, "%s\n", pval);
1628                         break;
1629                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
1630                         OP_STATE(ha->ip_config.iscsi_options,
1631                                  ISCSIOPTS_DISCOVERY_AUTH_EN, pval);
1632
1633                         len = sprintf(buf, "%s\n", pval);
1634                         break;
1635                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
1636                         OP_STATE(ha->ip_config.iscsi_options,
1637                                  ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);
1638
1639                         len = sprintf(buf, "%s\n", pval);
1640                         break;
1641                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
1642                         OP_STATE(ha->ip_config.iscsi_options,
1643                                  ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);
1644
1645                         len = sprintf(buf, "%s\n", pval);
1646                         break;
1647                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
1648                         len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
1649                         break;
1650                 default:
1651                         len = -ENOSYS;
1652                 }
1653         }
1654
1655         return len;
1656 }
1657
1658 static struct iscsi_endpoint *
1659 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1660                    int non_blocking)
1661 {
1662         int ret;
1663         struct iscsi_endpoint *ep;
1664         struct qla_endpoint *qla_ep;
1665         struct scsi_qla_host *ha;
1666         struct sockaddr_in *addr;
1667         struct sockaddr_in6 *addr6;
1668
1669         if (!shost) {
1670                 ret = -ENXIO;
1671                 pr_err("%s: shost is NULL\n", __func__);
1672                 return ERR_PTR(ret);
1673         }
1674
1675         ha = iscsi_host_priv(shost);
1676         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
1677         if (!ep) {
1678                 ret = -ENOMEM;
1679                 return ERR_PTR(ret);
1680         }
1681
1682         qla_ep = ep->dd_data;
1683         memset(qla_ep, 0, sizeof(struct qla_endpoint));
1684         if (dst_addr->sa_family == AF_INET) {
1685                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
1686                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
1687                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
1688                                   (char *)&addr->sin_addr));
1689         } else if (dst_addr->sa_family == AF_INET6) {
1690                 memcpy(&qla_ep->dst_addr, dst_addr,
1691                        sizeof(struct sockaddr_in6));
1692                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
1693                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
1694                                   (char *)&addr6->sin6_addr));
1695         } else {
1696                 ql4_printk(KERN_WARNING, ha, "%s: Invalid endpoint\n",
1697                            __func__);
1698         }
1699
1700         qla_ep->host = shost;
1701
1702         return ep;
1703 }
1704
1705 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1706 {
1707         struct qla_endpoint *qla_ep;
1708         struct scsi_qla_host *ha;
1709         int ret = 0;
1710
1711         qla_ep = ep->dd_data;
1712         ha = to_qla_host(qla_ep->host);
1713         DEBUG2(pr_info_ratelimited("%s: host: %ld\n", __func__, ha->host_no));
1714
1715         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1716                 ret = 1;
1717
1718         return ret;
1719 }
1720
1721 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
1722 {
1723         struct qla_endpoint *qla_ep;
1724         struct scsi_qla_host *ha;
1725
1726         qla_ep = ep->dd_data;
1727         ha = to_qla_host(qla_ep->host);
1728         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1729                           ha->host_no));
1730         iscsi_destroy_endpoint(ep);
1731 }
1732
1733 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
1734                                 enum iscsi_param param,
1735                                 char *buf)
1736 {
1737         struct qla_endpoint *qla_ep = ep->dd_data;
1738         struct sockaddr *dst_addr;
1739         struct scsi_qla_host *ha;
1740
1741         if (!qla_ep)
1742                 return -ENOTCONN;
1743
1744         ha = to_qla_host(qla_ep->host);
1745         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1746                           ha->host_no));
1747
1748         switch (param) {
1749         case ISCSI_PARAM_CONN_PORT:
1750         case ISCSI_PARAM_CONN_ADDRESS:
1751                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1752                 if (!dst_addr)
1753                         return -ENOTCONN;
1754
1755                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1756                                                  &qla_ep->dst_addr, param, buf);
1757         default:
1758                 return -ENOSYS;
1759         }
1760 }
1761
1762 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1763                                    struct iscsi_stats *stats)
1764 {
1765         struct iscsi_session *sess;
1766         struct iscsi_cls_session *cls_sess;
1767         struct ddb_entry *ddb_entry;
1768         struct scsi_qla_host *ha;
1769         struct ql_iscsi_stats *ql_iscsi_stats;
1770         int stats_size;
1771         int ret;
1772         dma_addr_t iscsi_stats_dma;
1773
1774         cls_sess = iscsi_conn_to_session(cls_conn);
1775         sess = cls_sess->dd_data;
1776         ddb_entry = sess->dd_data;
1777         ha = ddb_entry->ha;
1778
1779         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1780                           ha->host_no));
1781         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1782         /* Allocate memory */
1783         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1784                                             &iscsi_stats_dma, GFP_KERNEL);
1785         if (!ql_iscsi_stats) {
1786                 ql4_printk(KERN_ERR, ha,
1787                            "Unable to allocate memory for iscsi stats\n");
1788                 goto exit_get_stats;
1789         }
1790
1791         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
1792                                      iscsi_stats_dma);
1793         if (ret != QLA_SUCCESS) {
1794                 ql4_printk(KERN_ERR, ha,
1795                            "Unable to retrieve iscsi stats\n");
1796                 goto free_stats;
1797         }
1798
1799         /* octets */
1800         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
1801         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
1802         /* xmit pdus */
1803         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
1804         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
1805         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
1806         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
1807         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
1808         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
1809         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
1810         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
1811         /* recv pdus */
1812         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
1813         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
1814         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
1815         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
1816         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
1817         stats->logoutrsp_pdus =
1818                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
1819         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
1820         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
1821         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
1822
1823 free_stats:
1824         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
1825                           iscsi_stats_dma);
1826 exit_get_stats:
1827         return;
1828 }
1829
1830 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
1831 {
1832         struct iscsi_cls_session *session;
1833         struct iscsi_session *sess;
1834         unsigned long flags;
1835         enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
1836
1837         session = starget_to_session(scsi_target(sc->device));
1838         sess = session->dd_data;
1839
1840         spin_lock_irqsave(&session->lock, flags);
1841         if (session->state == ISCSI_SESSION_FAILED)
1842                 ret = BLK_EH_RESET_TIMER;
1843         spin_unlock_irqrestore(&session->lock, flags);
1844
1845         return ret;
1846 }
1847
1848 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
1849 {
1850         struct scsi_qla_host *ha = to_qla_host(shost);
1851         struct iscsi_cls_host *ihost = shost->shost_data;
1852         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
1853
1854         qla4xxx_get_firmware_state(ha);
1855
1856         switch (ha->addl_fw_state & 0x0F00) {
1857         case FW_ADDSTATE_LINK_SPEED_10MBPS:
1858                 speed = ISCSI_PORT_SPEED_10MBPS;
1859                 break;
1860         case FW_ADDSTATE_LINK_SPEED_100MBPS:
1861                 speed = ISCSI_PORT_SPEED_100MBPS;
1862                 break;
1863         case FW_ADDSTATE_LINK_SPEED_1GBPS:
1864                 speed = ISCSI_PORT_SPEED_1GBPS;
1865                 break;
1866         case FW_ADDSTATE_LINK_SPEED_10GBPS:
1867                 speed = ISCSI_PORT_SPEED_10GBPS;
1868                 break;
1869         }
1870         ihost->port_speed = speed;
1871 }
1872
1873 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1874 {
1875         struct scsi_qla_host *ha = to_qla_host(shost);
1876         struct iscsi_cls_host *ihost = shost->shost_data;
1877         uint32_t state = ISCSI_PORT_STATE_DOWN;
1878
1879         if (test_bit(AF_LINK_UP, &ha->flags))
1880                 state = ISCSI_PORT_STATE_UP;
1881
1882         ihost->port_state = state;
1883 }
1884
1885 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1886                                   enum iscsi_host_param param, char *buf)
1887 {
1888         struct scsi_qla_host *ha = to_qla_host(shost);
1889         int len;
1890
1891         switch (param) {
1892         case ISCSI_HOST_PARAM_HWADDRESS:
1893                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1894                 break;
1895         case ISCSI_HOST_PARAM_IPADDRESS:
1896                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1897                 break;
1898         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1899                 len = sprintf(buf, "%s\n", ha->name_string);
1900                 break;
1901         case ISCSI_HOST_PARAM_PORT_STATE:
1902                 qla4xxx_set_port_state(shost);
1903                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1904                 break;
1905         case ISCSI_HOST_PARAM_PORT_SPEED:
1906                 qla4xxx_set_port_speed(shost);
1907                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1908                 break;
1909         default:
1910                 return -ENOSYS;
1911         }
1912
1913         return len;
1914 }
1915
1916 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1917 {
1918         if (ha->iface_ipv4)
1919                 return;
1920
1921         /* IPv4 */
1922         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1923                                             &qla4xxx_iscsi_transport,
1924                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1925         if (!ha->iface_ipv4)
1926                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1927                            "iface0.\n");
1928 }
1929
1930 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1931 {
1932         if (!ha->iface_ipv6_0)
1933                 /* IPv6 iface-0 */
1934                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1935                                                       &qla4xxx_iscsi_transport,
1936                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1937                                                       0);
1938         if (!ha->iface_ipv6_0)
1939                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1940                            "iface0.\n");
1941
1942         if (!ha->iface_ipv6_1)
1943                 /* IPv6 iface-1 */
1944                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1945                                                       &qla4xxx_iscsi_transport,
1946                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1947                                                       0);
1948         if (!ha->iface_ipv6_1)
1949                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1950                            "iface1.\n");
1951 }
1952
1953 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1954 {
1955         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1956                 qla4xxx_create_ipv4_iface(ha);
1957
1958         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
1959                 qla4xxx_create_ipv6_iface(ha);
1960 }
1961
1962 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
1963 {
1964         if (ha->iface_ipv4) {
1965                 iscsi_destroy_iface(ha->iface_ipv4);
1966                 ha->iface_ipv4 = NULL;
1967         }
1968 }
1969
1970 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
1971 {
1972         if (ha->iface_ipv6_0) {
1973                 iscsi_destroy_iface(ha->iface_ipv6_0);
1974                 ha->iface_ipv6_0 = NULL;
1975         }
1976         if (ha->iface_ipv6_1) {
1977                 iscsi_destroy_iface(ha->iface_ipv6_1);
1978                 ha->iface_ipv6_1 = NULL;
1979         }
1980 }
1981
1982 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
1983 {
1984         qla4xxx_destroy_ipv4_iface(ha);
1985         qla4xxx_destroy_ipv6_iface(ha);
1986 }
1987
1988 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1989                              struct iscsi_iface_param_info *iface_param,
1990                              struct addr_ctrl_blk *init_fw_cb)
1991 {
1992         /*
1993          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1994          * iface_num 1 is valid only for IPv6 Addr.
1995          */
1996         switch (iface_param->param) {
1997         case ISCSI_NET_PARAM_IPV6_ADDR:
1998                 if (iface_param->iface_num & 0x1)
1999                         /* IPv6 Addr 1 */
2000                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
2001                                sizeof(init_fw_cb->ipv6_addr1));
2002                 else
2003                         /* IPv6 Addr 0 */
2004                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
2005                                sizeof(init_fw_cb->ipv6_addr0));
2006                 break;
2007         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
2008                 if (iface_param->iface_num & 0x1)
2009                         break;
2010                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
2011                        sizeof(init_fw_cb->ipv6_if_id));
2012                 break;
2013         case ISCSI_NET_PARAM_IPV6_ROUTER:
2014                 if (iface_param->iface_num & 0x1)
2015                         break;
2016                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
2017                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2018                 break;
2019         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
2020                 /* Autocfg applies to even interface */
2021                 if (iface_param->iface_num & 0x1)
2022                         break;
2023
2024                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
2025                         init_fw_cb->ipv6_addtl_opts &=
2026                                 cpu_to_le16(
2027                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2028                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
2029                         init_fw_cb->ipv6_addtl_opts |=
2030                                 cpu_to_le16(
2031                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2032                 else
2033                         ql4_printk(KERN_ERR, ha,
2034                                    "Invalid autocfg setting for IPv6 addr\n");
2035                 break;
2036         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
2037                 /* Autocfg applies to even interface */
2038                 if (iface_param->iface_num & 0x1)
2039                         break;
2040
2041                 if (iface_param->value[0] ==
2042                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
2043                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
2044                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2045                 else if (iface_param->value[0] ==
2046                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
2047                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
2048                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2049                 else
2050                         ql4_printk(KERN_ERR, ha,
2051                                    "Invalid autocfg setting for IPv6 linklocal addr\n");
2052                 break;
2053         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
2054                 /* Autocfg applies to even interface */
2055                 if (iface_param->iface_num & 0x1)
2056                         break;
2057
2058                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
2059                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
2060                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2061                 break;
2062         case ISCSI_NET_PARAM_IFACE_ENABLE:
2063                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2064                         init_fw_cb->ipv6_opts |=
2065                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
2066                         qla4xxx_create_ipv6_iface(ha);
2067                 } else {
2068                         init_fw_cb->ipv6_opts &=
2069                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
2070                                             0xFFFF);
2071                         qla4xxx_destroy_ipv6_iface(ha);
2072                 }
2073                 break;
2074         case ISCSI_NET_PARAM_VLAN_TAG:
2075                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
2076                         break;
2077                 init_fw_cb->ipv6_vlan_tag =
2078                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2079                 break;
2080         case ISCSI_NET_PARAM_VLAN_ENABLED:
2081                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2082                         init_fw_cb->ipv6_opts |=
2083                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
2084                 else
2085                         init_fw_cb->ipv6_opts &=
2086                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
2087                 break;
2088         case ISCSI_NET_PARAM_MTU:
2089                 init_fw_cb->eth_mtu_size =
2090                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2091                 break;
2092         case ISCSI_NET_PARAM_PORT:
2093                 /* Autocfg applies to even interface */
2094                 if (iface_param->iface_num & 0x1)
2095                         break;
2096
2097                 init_fw_cb->ipv6_port =
2098                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2099                 break;
2100         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2101                 if (iface_param->iface_num & 0x1)
2102                         break;
2103                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2104                         init_fw_cb->ipv6_tcp_opts |=
2105                                 cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
2106                 else
2107                         init_fw_cb->ipv6_tcp_opts &=
2108                                 cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE &
2109                                             0xFFFF);
2110                 break;
2111         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2112                 if (iface_param->iface_num & 0x1)
2113                         break;
2114                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2115                         init_fw_cb->ipv6_tcp_opts |=
2116                                 cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2117                 else
2118                         init_fw_cb->ipv6_tcp_opts &=
2119                                 cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2120                 break;
2121         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2122                 if (iface_param->iface_num & 0x1)
2123                         break;
2124                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2125                         init_fw_cb->ipv6_tcp_opts |=
2126                                 cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2127                 else
2128                         init_fw_cb->ipv6_tcp_opts &=
2129                                 cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2130                 break;
2131         case ISCSI_NET_PARAM_TCP_WSF:
2132                 if (iface_param->iface_num & 0x1)
2133                         break;
2134                 init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
2135                 break;
2136         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2137                 if (iface_param->iface_num & 0x1)
2138                         break;
2139                 init_fw_cb->ipv6_tcp_opts &=
2140                                         cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
2141                 init_fw_cb->ipv6_tcp_opts |=
2142                                 cpu_to_le16((iface_param->value[0] << 1) &
2143                                             IPV6_TCPOPT_TIMER_SCALE);
2144                 break;
2145         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2146                 if (iface_param->iface_num & 0x1)
2147                         break;
2148                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2149                         init_fw_cb->ipv6_tcp_opts |=
2150                                 cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
2151                 else
2152                         init_fw_cb->ipv6_tcp_opts &=
2153                                 cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
2154                 break;
2155         case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
2156                 if (iface_param->iface_num & 0x1)
2157                         break;
2158                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2159                         init_fw_cb->ipv6_opts |=
2160                                 cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2161                 else
2162                         init_fw_cb->ipv6_opts &=
2163                                 cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2164                 break;
2165         case ISCSI_NET_PARAM_REDIRECT_EN:
2166                 if (iface_param->iface_num & 0x1)
2167                         break;
2168                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2169                         init_fw_cb->ipv6_opts |=
2170                                 cpu_to_le16(IPV6_OPT_REDIRECT_EN);
2171                 else
2172                         init_fw_cb->ipv6_opts &=
2173                                 cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
2174                 break;
2175         case ISCSI_NET_PARAM_IPV6_MLD_EN:
2176                 if (iface_param->iface_num & 0x1)
2177                         break;
2178                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2179                         init_fw_cb->ipv6_addtl_opts |=
2180                                 cpu_to_le16(IPV6_ADDOPT_MLD_EN);
2181                 else
2182                         init_fw_cb->ipv6_addtl_opts &=
2183                                 cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
2184                 break;
2185         case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
2186                 if (iface_param->iface_num & 0x1)
2187                         break;
2188                 init_fw_cb->ipv6_flow_lbl =
2189                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2190                 break;
2191         case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
2192                 if (iface_param->iface_num & 0x1)
2193                         break;
2194                 init_fw_cb->ipv6_traffic_class = iface_param->value[0];
2195                 break;
2196         case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
2197                 if (iface_param->iface_num & 0x1)
2198                         break;
2199                 init_fw_cb->ipv6_hop_limit = iface_param->value[0];
2200                 break;
2201         case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
2202                 if (iface_param->iface_num & 0x1)
2203                         break;
2204                 init_fw_cb->ipv6_nd_reach_time =
2205                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2206                 break;
2207         case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
2208                 if (iface_param->iface_num & 0x1)
2209                         break;
2210                 init_fw_cb->ipv6_nd_rexmit_timer =
2211                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2212                 break;
2213         case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
2214                 if (iface_param->iface_num & 0x1)
2215                         break;
2216                 init_fw_cb->ipv6_nd_stale_timeout =
2217                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2218                 break;
2219         case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
2220                 if (iface_param->iface_num & 0x1)
2221                         break;
2222                 init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
2223                 break;
2224         case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
2225                 if (iface_param->iface_num & 0x1)
2226                         break;
2227                 init_fw_cb->ipv6_gw_advrt_mtu =
2228                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2229                 break;
2230         default:
2231                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
2232                            iface_param->param);
2233                 break;
2234         }
2235 }
2236
2237 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
2238                              struct iscsi_iface_param_info *iface_param,
2239                              struct addr_ctrl_blk *init_fw_cb)
2240 {
2241         switch (iface_param->param) {
2242         case ISCSI_NET_PARAM_IPV4_ADDR:
2243                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
2244                        sizeof(init_fw_cb->ipv4_addr));
2245                 break;
2246         case ISCSI_NET_PARAM_IPV4_SUBNET:
2247                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
2248                        sizeof(init_fw_cb->ipv4_subnet));
2249                 break;
2250         case ISCSI_NET_PARAM_IPV4_GW:
2251                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
2252                        sizeof(init_fw_cb->ipv4_gw_addr));
2253                 break;
2254         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
2255                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
2256                         init_fw_cb->ipv4_tcp_opts |=
2257                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
2258                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
2259                         init_fw_cb->ipv4_tcp_opts &=
2260                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
2261                 else
2262                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
2263                 break;
2264         case ISCSI_NET_PARAM_IFACE_ENABLE:
2265                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2266                         init_fw_cb->ipv4_ip_opts |=
2267                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
2268                         qla4xxx_create_ipv4_iface(ha);
2269                 } else {
2270                         init_fw_cb->ipv4_ip_opts &=
2271                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
2272                                             0xFFFF);
2273                         qla4xxx_destroy_ipv4_iface(ha);
2274                 }
2275                 break;
2276         case ISCSI_NET_PARAM_VLAN_TAG:
2277                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
2278                         break;
2279                 init_fw_cb->ipv4_vlan_tag =
2280                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2281                 break;
2282         case ISCSI_NET_PARAM_VLAN_ENABLED:
2283                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2284                         init_fw_cb->ipv4_ip_opts |=
2285                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
2286                 else
2287                         init_fw_cb->ipv4_ip_opts &=
2288                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
2289                 break;
2290         case ISCSI_NET_PARAM_MTU:
2291                 init_fw_cb->eth_mtu_size =
2292                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2293                 break;
2294         case ISCSI_NET_PARAM_PORT:
2295                 init_fw_cb->ipv4_port =
2296                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2297                 break;
2298         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2299                 if (iface_param->iface_num & 0x1)
2300                         break;
2301                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2302                         init_fw_cb->ipv4_tcp_opts |=
2303                                 cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
2304                 else
2305                         init_fw_cb->ipv4_tcp_opts &=
2306                                 cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE &
2307                                             0xFFFF);
2308                 break;
2309         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2310                 if (iface_param->iface_num & 0x1)
2311                         break;
2312                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2313                         init_fw_cb->ipv4_tcp_opts |=
2314                                 cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
2315                 else
2316                         init_fw_cb->ipv4_tcp_opts &=
2317                                 cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
2318                 break;
2319         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2320                 if (iface_param->iface_num & 0x1)
2321                         break;
2322                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2323                         init_fw_cb->ipv4_tcp_opts |=
2324                                 cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
2325                 else
2326                         init_fw_cb->ipv4_tcp_opts &=
2327                                 cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
2328                 break;
2329         case ISCSI_NET_PARAM_TCP_WSF:
2330                 if (iface_param->iface_num & 0x1)
2331                         break;
2332                 init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
2333                 break;
2334         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2335                 if (iface_param->iface_num & 0x1)
2336                         break;
2337                 init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
2338                 init_fw_cb->ipv4_tcp_opts |=
2339                                 cpu_to_le16((iface_param->value[0] << 1) &
2340                                             TCPOPT_TIMER_SCALE);
2341                 break;
2342         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2343                 if (iface_param->iface_num & 0x1)
2344                         break;
2345                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2346                         init_fw_cb->ipv4_tcp_opts |=
2347                                 cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
2348                 else
2349                         init_fw_cb->ipv4_tcp_opts &=
2350                                 cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
2351                 break;
2352         case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
2353                 if (iface_param->iface_num & 0x1)
2354                         break;
2355                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2356                         init_fw_cb->ipv4_tcp_opts |=
2357                                 cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
2358                 else
2359                         init_fw_cb->ipv4_tcp_opts &=
2360                                 cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
2361                 break;
2362         case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
2363                 if (iface_param->iface_num & 0x1)
2364                         break;
2365                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2366                         init_fw_cb->ipv4_tcp_opts |=
2367                                 cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
2368                 else
2369                         init_fw_cb->ipv4_tcp_opts &=
2370                                 cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
2371                 break;
2372         case ISCSI_NET_PARAM_IPV4_TOS_EN:
2373                 if (iface_param->iface_num & 0x1)
2374                         break;
2375                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2376                         init_fw_cb->ipv4_ip_opts |=
2377                                 cpu_to_le16(IPOPT_IPV4_TOS_EN);
2378                 else
2379                         init_fw_cb->ipv4_ip_opts &=
2380                                 cpu_to_le16(~IPOPT_IPV4_TOS_EN);
2381                 break;
2382         case ISCSI_NET_PARAM_IPV4_TOS:
2383                 if (iface_param->iface_num & 0x1)
2384                         break;
2385                 init_fw_cb->ipv4_tos = iface_param->value[0];
2386                 break;
2387         case ISCSI_NET_PARAM_IPV4_GRAT_ARP_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_GRAT_ARP_EN);
2393                 else
2394                         init_fw_cb->ipv4_ip_opts &=
2395                                         cpu_to_le16(~IPOPT_GRAT_ARP_EN);
2396                 break;
2397         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
2398                 if (iface_param->iface_num & 0x1)
2399                         break;
2400                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2401                         init_fw_cb->ipv4_ip_opts |=
2402                                 cpu_to_le16(IPOPT_ALT_CID_EN);
2403                 else
2404                         init_fw_cb->ipv4_ip_opts &=
2405                                 cpu_to_le16(~IPOPT_ALT_CID_EN);
2406                 break;
2407         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
2408                 if (iface_param->iface_num & 0x1)
2409                         break;
2410                 memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
2411                        (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
2412                 init_fw_cb->ipv4_dhcp_alt_cid_len =
2413                                         strlen(init_fw_cb->ipv4_dhcp_alt_cid);
2414                 break;
2415         case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
2416                 if (iface_param->iface_num & 0x1)
2417                         break;
2418                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2419                         init_fw_cb->ipv4_ip_opts |=
2420                                         cpu_to_le16(IPOPT_REQ_VID_EN);
2421                 else
2422                         init_fw_cb->ipv4_ip_opts &=
2423                                         cpu_to_le16(~IPOPT_REQ_VID_EN);
2424                 break;
2425         case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
2426                 if (iface_param->iface_num & 0x1)
2427                         break;
2428                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2429                         init_fw_cb->ipv4_ip_opts |=
2430                                         cpu_to_le16(IPOPT_USE_VID_EN);
2431                 else
2432                         init_fw_cb->ipv4_ip_opts &=
2433                                         cpu_to_le16(~IPOPT_USE_VID_EN);
2434                 break;
2435         case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
2436                 if (iface_param->iface_num & 0x1)
2437                         break;
2438                 memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
2439                        (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
2440                 init_fw_cb->ipv4_dhcp_vid_len =
2441                                         strlen(init_fw_cb->ipv4_dhcp_vid);
2442                 break;
2443         case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
2444                 if (iface_param->iface_num & 0x1)
2445                         break;
2446                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2447                         init_fw_cb->ipv4_ip_opts |=
2448                                         cpu_to_le16(IPOPT_LEARN_IQN_EN);
2449                 else
2450                         init_fw_cb->ipv4_ip_opts &=
2451                                         cpu_to_le16(~IPOPT_LEARN_IQN_EN);
2452                 break;
2453         case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
2454                 if (iface_param->iface_num & 0x1)
2455                         break;
2456                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2457                         init_fw_cb->ipv4_ip_opts |=
2458                                 cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
2459                 else
2460                         init_fw_cb->ipv4_ip_opts &=
2461                                 cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
2462                 break;
2463         case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
2464                 if (iface_param->iface_num & 0x1)
2465                         break;
2466                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2467                         init_fw_cb->ipv4_ip_opts |=
2468                                 cpu_to_le16(IPOPT_IN_FORWARD_EN);
2469                 else
2470                         init_fw_cb->ipv4_ip_opts &=
2471                                 cpu_to_le16(~IPOPT_IN_FORWARD_EN);
2472                 break;
2473         case ISCSI_NET_PARAM_REDIRECT_EN:
2474                 if (iface_param->iface_num & 0x1)
2475                         break;
2476                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2477                         init_fw_cb->ipv4_ip_opts |=
2478                                 cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
2479                 else
2480                         init_fw_cb->ipv4_ip_opts &=
2481                                 cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
2482                 break;
2483         case ISCSI_NET_PARAM_IPV4_TTL:
2484                 if (iface_param->iface_num & 0x1)
2485                         break;
2486                 init_fw_cb->ipv4_ttl = iface_param->value[0];
2487                 break;
2488         default:
2489                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
2490                            iface_param->param);
2491                 break;
2492         }
2493 }
2494
2495 static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
2496                                     struct iscsi_iface_param_info *iface_param,
2497                                     struct addr_ctrl_blk *init_fw_cb)
2498 {
2499         switch (iface_param->param) {
2500         case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
2501                 if (iface_param->iface_num & 0x1)
2502                         break;
2503                 init_fw_cb->def_timeout =
2504                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2505                 break;
2506         case ISCSI_IFACE_PARAM_HDRDGST_EN:
2507                 if (iface_param->iface_num & 0x1)
2508                         break;
2509                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2510                         init_fw_cb->iscsi_opts |=
2511                                 cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
2512                 else
2513                         init_fw_cb->iscsi_opts &=
2514                                 cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
2515                 break;
2516         case ISCSI_IFACE_PARAM_DATADGST_EN:
2517                 if (iface_param->iface_num & 0x1)
2518                         break;
2519                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2520                         init_fw_cb->iscsi_opts |=
2521                                 cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
2522                 else
2523                         init_fw_cb->iscsi_opts &=
2524                                 cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
2525                 break;
2526         case ISCSI_IFACE_PARAM_IMM_DATA_EN:
2527                 if (iface_param->iface_num & 0x1)
2528                         break;
2529                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2530                         init_fw_cb->iscsi_opts |=
2531                                 cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
2532                 else
2533                         init_fw_cb->iscsi_opts &=
2534                                 cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
2535                 break;
2536         case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
2537                 if (iface_param->iface_num & 0x1)
2538                         break;
2539                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2540                         init_fw_cb->iscsi_opts |=
2541                                 cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
2542                 else
2543                         init_fw_cb->iscsi_opts &=
2544                                 cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
2545                 break;
2546         case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
2547                 if (iface_param->iface_num & 0x1)
2548                         break;
2549                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2550                         init_fw_cb->iscsi_opts |=
2551                                 cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
2552                 else
2553                         init_fw_cb->iscsi_opts &=
2554                                 cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
2555                 break;
2556         case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
2557                 if (iface_param->iface_num & 0x1)
2558                         break;
2559                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2560                         init_fw_cb->iscsi_opts |=
2561                                 cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
2562                 else
2563                         init_fw_cb->iscsi_opts &=
2564                                 cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
2565                 break;
2566         case ISCSI_IFACE_PARAM_ERL:
2567                 if (iface_param->iface_num & 0x1)
2568                         break;
2569                 init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
2570                 init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
2571                                                       ISCSIOPTS_ERL);
2572                 break;
2573         case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
2574                 if (iface_param->iface_num & 0x1)
2575                         break;
2576                 init_fw_cb->iscsi_max_pdu_size =
2577                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2578                                 BYTE_UNITS;
2579                 break;
2580         case ISCSI_IFACE_PARAM_FIRST_BURST:
2581                 if (iface_param->iface_num & 0x1)
2582                         break;
2583                 init_fw_cb->iscsi_fburst_len =
2584                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2585                                 BYTE_UNITS;
2586                 break;
2587         case ISCSI_IFACE_PARAM_MAX_R2T:
2588                 if (iface_param->iface_num & 0x1)
2589                         break;
2590                 init_fw_cb->iscsi_max_outstnd_r2t =
2591                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2592                 break;
2593         case ISCSI_IFACE_PARAM_MAX_BURST:
2594                 if (iface_param->iface_num & 0x1)
2595                         break;
2596                 init_fw_cb->iscsi_max_burst_len =
2597                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2598                                 BYTE_UNITS;
2599                 break;
2600         case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
2601                 if (iface_param->iface_num & 0x1)
2602                         break;
2603                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2604                         init_fw_cb->iscsi_opts |=
2605                                 cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
2606                 else
2607                         init_fw_cb->iscsi_opts &=
2608                                 cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
2609                 break;
2610         case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
2611                 if (iface_param->iface_num & 0x1)
2612                         break;
2613                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2614                         init_fw_cb->iscsi_opts |=
2615                                 cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
2616                 else
2617                         init_fw_cb->iscsi_opts &=
2618                                 cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
2619                 break;
2620         case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
2621                 if (iface_param->iface_num & 0x1)
2622                         break;
2623                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2624                         init_fw_cb->iscsi_opts |=
2625                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
2626                 else
2627                         init_fw_cb->iscsi_opts &=
2628                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
2629                 break;
2630         case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
2631                 if (iface_param->iface_num & 0x1)
2632                         break;
2633                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2634                         init_fw_cb->iscsi_opts |=
2635                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2636                 else
2637                         init_fw_cb->iscsi_opts &=
2638                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2639                 break;
2640         case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
2641                 if (iface_param->iface_num & 0x1)
2642                         break;
2643                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2644                         init_fw_cb->iscsi_opts |=
2645                                 cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2646                 else
2647                         init_fw_cb->iscsi_opts &=
2648                                 cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2649                 break;
2650         default:
2651                 ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
2652                            iface_param->param);
2653                 break;
2654         }
2655 }
2656
2657 static void
2658 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
2659 {
2660         struct addr_ctrl_blk_def *acb;
2661         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
2662         memset(acb->reserved1, 0, sizeof(acb->reserved1));
2663         memset(acb->reserved2, 0, sizeof(acb->reserved2));
2664         memset(acb->reserved3, 0, sizeof(acb->reserved3));
2665         memset(acb->reserved4, 0, sizeof(acb->reserved4));
2666         memset(acb->reserved5, 0, sizeof(acb->reserved5));
2667         memset(acb->reserved6, 0, sizeof(acb->reserved6));
2668         memset(acb->reserved7, 0, sizeof(acb->reserved7));
2669         memset(acb->reserved8, 0, sizeof(acb->reserved8));
2670         memset(acb->reserved9, 0, sizeof(acb->reserved9));
2671         memset(acb->reserved10, 0, sizeof(acb->reserved10));
2672         memset(acb->reserved11, 0, sizeof(acb->reserved11));
2673         memset(acb->reserved12, 0, sizeof(acb->reserved12));
2674         memset(acb->reserved13, 0, sizeof(acb->reserved13));
2675         memset(acb->reserved14, 0, sizeof(acb->reserved14));
2676         memset(acb->reserved15, 0, sizeof(acb->reserved15));
2677 }
2678
2679 static int
2680 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
2681 {
2682         struct scsi_qla_host *ha = to_qla_host(shost);
2683         int rval = 0;
2684         struct iscsi_iface_param_info *iface_param = NULL;
2685         struct addr_ctrl_blk *init_fw_cb = NULL;
2686         dma_addr_t init_fw_cb_dma;
2687         uint32_t mbox_cmd[MBOX_REG_COUNT];
2688         uint32_t mbox_sts[MBOX_REG_COUNT];
2689         uint32_t rem = len;
2690         struct nlattr *attr;
2691
2692         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
2693                                         sizeof(struct addr_ctrl_blk),
2694                                         &init_fw_cb_dma, GFP_KERNEL);
2695         if (!init_fw_cb) {
2696                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
2697                            __func__);
2698                 return -ENOMEM;
2699         }
2700
2701         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2702         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2703         memset(&mbox_sts, 0, sizeof(mbox_sts));
2704
2705         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
2706                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
2707                 rval = -EIO;
2708                 goto exit_init_fw_cb;
2709         }
2710
2711         nla_for_each_attr(attr, data, len, rem) {
2712                 iface_param = nla_data(attr);
2713
2714                 if (iface_param->param_type == ISCSI_NET_PARAM) {
2715                         switch (iface_param->iface_type) {
2716                         case ISCSI_IFACE_TYPE_IPV4:
2717                                 switch (iface_param->iface_num) {
2718                                 case 0:
2719                                         qla4xxx_set_ipv4(ha, iface_param,
2720                                                          init_fw_cb);
2721                                         break;
2722                                 default:
2723                                 /* Cannot have more than one IPv4 interface */
2724                                         ql4_printk(KERN_ERR, ha,
2725                                                    "Invalid IPv4 iface number = %d\n",
2726                                                    iface_param->iface_num);
2727                                         break;
2728                                 }
2729                                 break;
2730                         case ISCSI_IFACE_TYPE_IPV6:
2731                                 switch (iface_param->iface_num) {
2732                                 case 0:
2733                                 case 1:
2734                                         qla4xxx_set_ipv6(ha, iface_param,
2735                                                          init_fw_cb);
2736                                         break;
2737                                 default:
2738                                 /* Cannot have more than two IPv6 interface */
2739                                         ql4_printk(KERN_ERR, ha,
2740                                                    "Invalid IPv6 iface number = %d\n",
2741                                                    iface_param->iface_num);
2742                                         break;
2743                                 }
2744                                 break;
2745                         default:
2746                                 ql4_printk(KERN_ERR, ha,
2747                                            "Invalid iface type\n");
2748                                 break;
2749                         }
2750                 } else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
2751                                 qla4xxx_set_iscsi_param(ha, iface_param,
2752                                                         init_fw_cb);
2753                 } else {
2754                         continue;
2755                 }
2756         }
2757
2758         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
2759
2760         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
2761                                  sizeof(struct addr_ctrl_blk),
2762                                  FLASH_OPT_RMW_COMMIT);
2763         if (rval != QLA_SUCCESS) {
2764                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
2765                            __func__);
2766                 rval = -EIO;
2767                 goto exit_init_fw_cb;
2768         }
2769
2770         rval = qla4xxx_disable_acb(ha);
2771         if (rval != QLA_SUCCESS) {
2772                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
2773                            __func__);
2774                 rval = -EIO;
2775                 goto exit_init_fw_cb;
2776         }
2777
2778         wait_for_completion_timeout(&ha->disable_acb_comp,
2779                                     DISABLE_ACB_TOV * HZ);
2780
2781         qla4xxx_initcb_to_acb(init_fw_cb);
2782
2783         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
2784         if (rval != QLA_SUCCESS) {
2785                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
2786                            __func__);
2787                 rval = -EIO;
2788                 goto exit_init_fw_cb;
2789         }
2790
2791         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2792         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
2793                                   init_fw_cb_dma);
2794
2795 exit_init_fw_cb:
2796         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
2797                           init_fw_cb, init_fw_cb_dma);
2798
2799         return rval;
2800 }
2801
2802 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
2803                                      enum iscsi_param param, char *buf)
2804 {
2805         struct iscsi_session *sess = cls_sess->dd_data;
2806         struct ddb_entry *ddb_entry = sess->dd_data;
2807         struct scsi_qla_host *ha = ddb_entry->ha;
2808         struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
2809         struct ql4_chap_table chap_tbl;
2810         int rval, len;
2811         uint16_t idx;
2812
2813         memset(&chap_tbl, 0, sizeof(chap_tbl));
2814         switch (param) {
2815         case ISCSI_PARAM_CHAP_IN_IDX:
2816                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
2817                                               sess->password_in, BIDI_CHAP,
2818                                               &idx);
2819                 if (rval)
2820                         len = sprintf(buf, "\n");
2821                 else
2822                         len = sprintf(buf, "%hu\n", idx);
2823                 break;
2824         case ISCSI_PARAM_CHAP_OUT_IDX:
2825                 if (ddb_entry->ddb_type == FLASH_DDB) {
2826                         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
2827                                 idx = ddb_entry->chap_tbl_idx;
2828                                 rval = QLA_SUCCESS;
2829                         } else {
2830                                 rval = QLA_ERROR;
2831                         }
2832                 } else {
2833                         rval = qla4xxx_get_chap_index(ha, sess->username,
2834                                                       sess->password,
2835                                                       LOCAL_CHAP, &idx);
2836                 }
2837                 if (rval)
2838                         len = sprintf(buf, "\n");
2839                 else
2840                         len = sprintf(buf, "%hu\n", idx);
2841                 break;
2842         case ISCSI_PARAM_USERNAME:
2843         case ISCSI_PARAM_PASSWORD:
2844                 /* First, populate session username and password for FLASH DDB,
2845                  * if not already done. This happens when session login fails
2846                  * for a FLASH DDB.
2847                  */
2848                 if (ddb_entry->ddb_type == FLASH_DDB &&
2849                     ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
2850                     !sess->username && !sess->password) {
2851                         idx = ddb_entry->chap_tbl_idx;
2852                         rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
2853                                                             chap_tbl.secret,
2854                                                             idx);
2855                         if (!rval) {
2856                                 iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
2857                                                 (char *)chap_tbl.name,
2858                                                 strlen((char *)chap_tbl.name));
2859                                 iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
2860                                                 (char *)chap_tbl.secret,
2861                                                 chap_tbl.secret_len);
2862                         }
2863                 }
2864                 /* allow fall-through */
2865         default:
2866                 return iscsi_session_get_param(cls_sess, param, buf);
2867         }
2868
2869         return len;
2870 }
2871
2872 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
2873                                   enum iscsi_param param, char *buf)
2874 {
2875         struct iscsi_conn *conn;
2876         struct qla_conn *qla_conn;
2877         struct sockaddr *dst_addr;
2878
2879         conn = cls_conn->dd_data;
2880         qla_conn = conn->dd_data;
2881         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2882
2883         switch (param) {
2884         case ISCSI_PARAM_CONN_PORT:
2885         case ISCSI_PARAM_CONN_ADDRESS:
2886                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
2887                                                  dst_addr, param, buf);
2888         default:
2889                 return iscsi_conn_get_param(cls_conn, param, buf);
2890         }
2891 }
2892
2893 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
2894 {
2895         uint32_t mbx_sts = 0;
2896         uint16_t tmp_ddb_index;
2897         int ret;
2898
2899 get_ddb_index:
2900         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
2901
2902         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
2903                 DEBUG2(ql4_printk(KERN_INFO, ha,
2904                                   "Free DDB index not available\n"));
2905                 ret = QLA_ERROR;
2906                 goto exit_get_ddb_index;
2907         }
2908
2909         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
2910                 goto get_ddb_index;
2911
2912         DEBUG2(ql4_printk(KERN_INFO, ha,
2913                           "Found a free DDB index at %d\n", tmp_ddb_index));
2914         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
2915         if (ret == QLA_ERROR) {
2916                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
2917                         ql4_printk(KERN_INFO, ha,
2918                                    "DDB index = %d not available trying next\n",
2919                                    tmp_ddb_index);
2920                         goto get_ddb_index;
2921                 }
2922                 DEBUG2(ql4_printk(KERN_INFO, ha,
2923                                   "Free FW DDB not available\n"));
2924         }
2925
2926         *ddb_index = tmp_ddb_index;
2927
2928 exit_get_ddb_index:
2929         return ret;
2930 }
2931
2932 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
2933                                    struct ddb_entry *ddb_entry,
2934                                    char *existing_ipaddr,
2935                                    char *user_ipaddr)
2936 {
2937         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
2938         char formatted_ipaddr[DDB_IPADDR_LEN];
2939         int status = QLA_SUCCESS, ret = 0;
2940
2941         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
2942                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2943                                '\0', NULL);
2944                 if (ret == 0) {
2945                         status = QLA_ERROR;
2946                         goto out_match;
2947                 }
2948                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
2949         } else {
2950                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2951                                '\0', NULL);
2952                 if (ret == 0) {
2953                         status = QLA_ERROR;
2954                         goto out_match;
2955                 }
2956                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
2957         }
2958
2959         if (strcmp(existing_ipaddr, formatted_ipaddr))
2960                 status = QLA_ERROR;
2961
2962 out_match:
2963         return status;
2964 }
2965
2966 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
2967                                       struct iscsi_cls_conn *cls_conn)
2968 {
2969         int idx = 0, max_ddbs, rval;
2970         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
2971         struct iscsi_session *sess, *existing_sess;
2972         struct iscsi_conn *conn, *existing_conn;
2973         struct ddb_entry *ddb_entry;
2974
2975         sess = cls_sess->dd_data;
2976         conn = cls_conn->dd_data;
2977
2978         if (sess->targetname == NULL ||
2979             conn->persistent_address == NULL ||
2980             conn->persistent_port == 0)
2981                 return QLA_ERROR;
2982
2983         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
2984                                      MAX_DEV_DB_ENTRIES;
2985
2986         for (idx = 0; idx < max_ddbs; idx++) {
2987                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
2988                 if (ddb_entry == NULL)
2989                         continue;
2990
2991                 if (ddb_entry->ddb_type != FLASH_DDB)
2992                         continue;
2993
2994                 existing_sess = ddb_entry->sess->dd_data;
2995                 existing_conn = ddb_entry->conn->dd_data;
2996
2997                 if (existing_sess->targetname == NULL ||
2998                     existing_conn->persistent_address == NULL ||
2999                     existing_conn->persistent_port == 0)
3000                         continue;
3001
3002                 DEBUG2(ql4_printk(KERN_INFO, ha,
3003                                   "IQN = %s User IQN = %s\n",
3004                                   existing_sess->targetname,
3005                                   sess->targetname));
3006
3007                 DEBUG2(ql4_printk(KERN_INFO, ha,
3008                                   "IP = %s User IP = %s\n",
3009                                   existing_conn->persistent_address,
3010                                   conn->persistent_address));
3011
3012                 DEBUG2(ql4_printk(KERN_INFO, ha,
3013                                   "Port = %d User Port = %d\n",
3014                                   existing_conn->persistent_port,
3015                                   conn->persistent_port));
3016
3017                 if (strcmp(existing_sess->targetname, sess->targetname))
3018                         continue;
3019                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
3020                                         existing_conn->persistent_address,
3021                                         conn->persistent_address);
3022                 if (rval == QLA_ERROR)
3023                         continue;
3024                 if (existing_conn->persistent_port != conn->persistent_port)
3025                         continue;
3026                 break;
3027         }
3028
3029         if (idx == max_ddbs)
3030                 return QLA_ERROR;
3031
3032         DEBUG2(ql4_printk(KERN_INFO, ha,
3033                           "Match found in fwdb sessions\n"));
3034         return QLA_SUCCESS;
3035 }
3036
3037 static struct iscsi_cls_session *
3038 qla4xxx_session_create(struct iscsi_endpoint *ep,
3039                         uint16_t cmds_max, uint16_t qdepth,
3040                         uint32_t initial_cmdsn)
3041 {
3042         struct iscsi_cls_session *cls_sess;
3043         struct scsi_qla_host *ha;
3044         struct qla_endpoint *qla_ep;
3045         struct ddb_entry *ddb_entry;
3046         uint16_t ddb_index;
3047         struct iscsi_session *sess;
3048         struct sockaddr *dst_addr;
3049         int ret;
3050
3051         if (!ep) {
3052                 printk(KERN_ERR "qla4xxx: missing ep.\n");
3053                 return NULL;
3054         }
3055
3056         qla_ep = ep->dd_data;
3057         dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
3058         ha = to_qla_host(qla_ep->host);
3059         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3060                           ha->host_no));
3061
3062         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
3063         if (ret == QLA_ERROR)
3064                 return NULL;
3065
3066         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
3067                                        cmds_max, sizeof(struct ddb_entry),
3068                                        sizeof(struct ql4_task_data),
3069                                        initial_cmdsn, ddb_index);
3070         if (!cls_sess)
3071                 return NULL;
3072
3073         sess = cls_sess->dd_data;
3074         ddb_entry = sess->dd_data;
3075         ddb_entry->fw_ddb_index = ddb_index;
3076         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3077         ddb_entry->ha = ha;
3078         ddb_entry->sess = cls_sess;
3079         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
3080         ddb_entry->ddb_change = qla4xxx_ddb_change;
3081         clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
3082         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
3083         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
3084         ha->tot_ddbs++;
3085
3086         return cls_sess;
3087 }
3088
3089 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
3090 {
3091         struct iscsi_session *sess;
3092         struct ddb_entry *ddb_entry;
3093         struct scsi_qla_host *ha;
3094         unsigned long flags, wtime;
3095         struct dev_db_entry *fw_ddb_entry = NULL;
3096         dma_addr_t fw_ddb_entry_dma;
3097         uint32_t ddb_state;
3098         int ret;
3099
3100         sess = cls_sess->dd_data;
3101         ddb_entry = sess->dd_data;
3102         ha = ddb_entry->ha;
3103         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3104                           ha->host_no));
3105
3106         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3107                                           &fw_ddb_entry_dma, GFP_KERNEL);
3108         if (!fw_ddb_entry) {
3109                 ql4_printk(KERN_ERR, ha,
3110                            "%s: Unable to allocate dma buffer\n", __func__);
3111                 goto destroy_session;
3112         }
3113
3114         wtime = jiffies + (HZ * LOGOUT_TOV);
3115         do {
3116                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
3117                                               fw_ddb_entry, fw_ddb_entry_dma,
3118                                               NULL, NULL, &ddb_state, NULL,
3119                                               NULL, NULL);
3120                 if (ret == QLA_ERROR)
3121                         goto destroy_session;
3122
3123                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
3124                     (ddb_state == DDB_DS_SESSION_FAILED))
3125                         goto destroy_session;
3126
3127                 schedule_timeout_uninterruptible(HZ);
3128         } while ((time_after(wtime, jiffies)));
3129
3130 destroy_session:
3131         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
3132         if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
3133                 clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
3134         spin_lock_irqsave(&ha->hardware_lock, flags);
3135         qla4xxx_free_ddb(ha, ddb_entry);
3136         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3137
3138         iscsi_session_teardown(cls_sess);
3139
3140         if (fw_ddb_entry)
3141                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3142                                   fw_ddb_entry, fw_ddb_entry_dma);
3143 }
3144
3145 static struct iscsi_cls_conn *
3146 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
3147 {
3148         struct iscsi_cls_conn *cls_conn;
3149         struct iscsi_session *sess;
3150         struct ddb_entry *ddb_entry;
3151         struct scsi_qla_host *ha;
3152
3153         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
3154                                     conn_idx);
3155         if (!cls_conn) {
3156                 pr_info("%s: Can not create connection for conn_idx = %u\n",
3157                         __func__, conn_idx);
3158                 return NULL;
3159         }
3160
3161         sess = cls_sess->dd_data;
3162         ddb_entry = sess->dd_data;
3163         ddb_entry->conn = cls_conn;
3164
3165         ha = ddb_entry->ha;
3166         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: conn_idx = %u\n", __func__,
3167                           conn_idx));
3168         return cls_conn;
3169 }
3170
3171 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
3172                              struct iscsi_cls_conn *cls_conn,
3173                              uint64_t transport_fd, int is_leading)
3174 {
3175         struct iscsi_conn *conn;
3176         struct qla_conn *qla_conn;
3177         struct iscsi_endpoint *ep;
3178         struct ddb_entry *ddb_entry;
3179         struct scsi_qla_host *ha;
3180         struct iscsi_session *sess;
3181
3182         sess = cls_session->dd_data;
3183         ddb_entry = sess->dd_data;
3184         ha = ddb_entry->ha;
3185
3186         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3187                           cls_session->sid, cls_conn->cid));
3188
3189         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
3190                 return -EINVAL;
3191         ep = iscsi_lookup_endpoint(transport_fd);
3192         conn = cls_conn->dd_data;
3193         qla_conn = conn->dd_data;
3194         qla_conn->qla_ep = ep->dd_data;
3195         return 0;
3196 }
3197
3198 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
3199 {
3200         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3201         struct iscsi_session *sess;
3202         struct ddb_entry *ddb_entry;
3203         struct scsi_qla_host *ha;
3204         struct dev_db_entry *fw_ddb_entry = NULL;
3205         dma_addr_t fw_ddb_entry_dma;
3206         uint32_t mbx_sts = 0;
3207         int ret = 0;
3208         int status = QLA_SUCCESS;
3209
3210         sess = cls_sess->dd_data;
3211         ddb_entry = sess->dd_data;
3212         ha = ddb_entry->ha;
3213         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3214                           cls_sess->sid, cls_conn->cid));
3215
3216         /* Check if we have  matching FW DDB, if yes then do not
3217          * login to this target. This could cause target to logout previous
3218          * connection
3219          */
3220         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
3221         if (ret == QLA_SUCCESS) {
3222                 ql4_printk(KERN_INFO, ha,
3223                            "Session already exist in FW.\n");
3224                 ret = -EEXIST;
3225                 goto exit_conn_start;
3226         }
3227
3228         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3229                                           &fw_ddb_entry_dma, GFP_KERNEL);
3230         if (!fw_ddb_entry) {
3231                 ql4_printk(KERN_ERR, ha,
3232                            "%s: Unable to allocate dma buffer\n", __func__);
3233                 ret = -ENOMEM;
3234                 goto exit_conn_start;
3235         }
3236
3237         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
3238         if (ret) {
3239                 /* If iscsid is stopped and started then no need to do
3240                 * set param again since ddb state will be already
3241                 * active and FW does not allow set ddb to an
3242                 * active session.
3243                 */
3244                 if (mbx_sts)
3245                         if (ddb_entry->fw_ddb_device_state ==
3246                                                 DDB_DS_SESSION_ACTIVE) {
3247                                 ddb_entry->unblock_sess(ddb_entry->sess);
3248                                 goto exit_set_param;
3249                         }
3250
3251                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
3252                            __func__, ddb_entry->fw_ddb_index);
3253                 goto exit_conn_start;
3254         }
3255
3256         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
3257         if (status == QLA_ERROR) {
3258                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
3259                            sess->targetname);
3260                 ret = -EINVAL;
3261                 goto exit_conn_start;
3262         }
3263
3264         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
3265                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
3266
3267         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
3268                       ddb_entry->fw_ddb_device_state));
3269
3270 exit_set_param:
3271         ret = 0;
3272
3273 exit_conn_start:
3274         if (fw_ddb_entry)
3275                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3276                                   fw_ddb_entry, fw_ddb_entry_dma);
3277         return ret;
3278 }
3279
3280 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
3281 {
3282         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3283         struct iscsi_session *sess;
3284         struct scsi_qla_host *ha;
3285         struct ddb_entry *ddb_entry;
3286         int options;
3287
3288         sess = cls_sess->dd_data;
3289         ddb_entry = sess->dd_data;
3290         ha = ddb_entry->ha;
3291         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: cid = %d\n", __func__,
3292                           cls_conn->cid));
3293
3294         options = LOGOUT_OPTION_CLOSE_SESSION;
3295         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
3296                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
3297 }
3298
3299 static void qla4xxx_task_work(struct work_struct *wdata)
3300 {
3301         struct ql4_task_data *task_data;
3302         struct scsi_qla_host *ha;
3303         struct passthru_status *sts;
3304         struct iscsi_task *task;
3305         struct iscsi_hdr *hdr;
3306         uint8_t *data;
3307         uint32_t data_len;
3308         struct iscsi_conn *conn;
3309         int hdr_len;
3310         itt_t itt;
3311
3312         task_data = container_of(wdata, struct ql4_task_data, task_work);
3313         ha = task_data->ha;
3314         task = task_data->task;
3315         sts = &task_data->sts;
3316         hdr_len = sizeof(struct iscsi_hdr);
3317
3318         DEBUG3(printk(KERN_INFO "Status returned\n"));
3319         DEBUG3(qla4xxx_dump_buffer(sts, 64));
3320         DEBUG3(printk(KERN_INFO "Response buffer"));
3321         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
3322
3323         conn = task->conn;
3324
3325         switch (sts->completionStatus) {
3326         case PASSTHRU_STATUS_COMPLETE:
3327                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
3328                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
3329                 itt = sts->handle;
3330                 hdr->itt = itt;
3331                 data = task_data->resp_buffer + hdr_len;
3332                 data_len = task_data->resp_len - hdr_len;
3333                 iscsi_complete_pdu(conn, hdr, data, data_len);
3334                 break;
3335         default:
3336                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
3337                            sts->completionStatus);
3338                 break;
3339         }
3340         return;
3341 }
3342
3343 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3344 {
3345         struct ql4_task_data *task_data;
3346         struct iscsi_session *sess;
3347         struct ddb_entry *ddb_entry;
3348         struct scsi_qla_host *ha;
3349         int hdr_len;
3350
3351         sess = task->conn->session;
3352         ddb_entry = sess->dd_data;
3353         ha = ddb_entry->ha;
3354         task_data = task->dd_data;
3355         memset(task_data, 0, sizeof(struct ql4_task_data));
3356
3357         if (task->sc) {
3358                 ql4_printk(KERN_INFO, ha,
3359                            "%s: SCSI Commands not implemented\n", __func__);
3360                 return -EINVAL;
3361         }
3362
3363         hdr_len = sizeof(struct iscsi_hdr);
3364         task_data->ha = ha;
3365         task_data->task = task;
3366
3367         if (task->data_count) {
3368                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
3369                                                      task->data_count,
3370                                                      PCI_DMA_TODEVICE);
3371         }
3372
3373         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3374                       __func__, task->conn->max_recv_dlength, hdr_len));
3375
3376         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
3377         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
3378                                                     task_data->resp_len,
3379                                                     &task_data->resp_dma,
3380                                                     GFP_ATOMIC);
3381         if (!task_data->resp_buffer)
3382                 goto exit_alloc_pdu;
3383
3384         task_data->req_len = task->data_count + hdr_len;
3385         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
3386                                                    task_data->req_len,
3387                                                    &task_data->req_dma,
3388                                                    GFP_ATOMIC);
3389         if (!task_data->req_buffer)
3390                 goto exit_alloc_pdu;
3391
3392         task->hdr = task_data->req_buffer;
3393
3394         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
3395
3396         return 0;
3397
3398 exit_alloc_pdu:
3399         if (task_data->resp_buffer)
3400                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3401                                   task_data->resp_buffer, task_data->resp_dma);
3402
3403         if (task_data->req_buffer)
3404                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3405                                   task_data->req_buffer, task_data->req_dma);
3406         return -ENOMEM;
3407 }
3408
3409 static void qla4xxx_task_cleanup(struct iscsi_task *task)
3410 {
3411         struct ql4_task_data *task_data;
3412         struct iscsi_session *sess;
3413         struct ddb_entry *ddb_entry;
3414         struct scsi_qla_host *ha;
3415         int hdr_len;
3416
3417         hdr_len = sizeof(struct iscsi_hdr);
3418         sess = task->conn->session;
3419         ddb_entry = sess->dd_data;
3420         ha = ddb_entry->ha;
3421         task_data = task->dd_data;
3422
3423         if (task->data_count) {
3424                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
3425                                  task->data_count, PCI_DMA_TODEVICE);
3426         }
3427
3428         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3429                       __func__, task->conn->max_recv_dlength, hdr_len));
3430
3431         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3432                           task_data->resp_buffer, task_data->resp_dma);
3433         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3434                           task_data->req_buffer, task_data->req_dma);
3435         return;
3436 }
3437
3438 static int qla4xxx_task_xmit(struct iscsi_task *task)
3439 {
3440         struct scsi_cmnd *sc = task->sc;
3441         struct iscsi_session *sess = task->conn->session;
3442         struct ddb_entry *ddb_entry = sess->dd_data;
3443         struct scsi_qla_host *ha = ddb_entry->ha;
3444
3445         if (!sc)
3446                 return qla4xxx_send_passthru0(task);
3447
3448         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
3449                    __func__);
3450         return -ENOSYS;
3451 }
3452
3453 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
3454                                          struct iscsi_bus_flash_conn *conn,
3455                                          struct dev_db_entry *fw_ddb_entry)
3456 {
3457         unsigned long options = 0;
3458         int rc = 0;
3459
3460         options = le16_to_cpu(fw_ddb_entry->options);
3461         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3462         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3463                 rc = iscsi_switch_str_param(&sess->portal_type,
3464                                             PORTAL_TYPE_IPV6);
3465                 if (rc)
3466                         goto exit_copy;
3467         } else {
3468                 rc = iscsi_switch_str_param(&sess->portal_type,
3469                                             PORTAL_TYPE_IPV4);
3470                 if (rc)
3471                         goto exit_copy;
3472         }
3473
3474         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3475                                               &options);
3476         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3477         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
3478
3479         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3480         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3481         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3482         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3483         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3484         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3485                                             &options);
3486         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3487         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3488         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
3489         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3490                                              &options);
3491         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3492         sess->discovery_auth_optional =
3493                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3494         if (test_bit(ISCSIOPT_ERL1, &options))
3495                 sess->erl |= BIT_1;
3496         if (test_bit(ISCSIOPT_ERL0, &options))
3497                 sess->erl |= BIT_0;
3498
3499         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3500         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3501         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3502         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3503         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3504                 conn->tcp_timer_scale |= BIT_3;
3505         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3506                 conn->tcp_timer_scale |= BIT_2;
3507         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3508                 conn->tcp_timer_scale |= BIT_1;
3509
3510         conn->tcp_timer_scale >>= 1;
3511         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3512
3513         options = le16_to_cpu(fw_ddb_entry->ip_options);
3514         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3515
3516         conn->max_recv_dlength = BYTE_UNITS *
3517                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3518         conn->max_xmit_dlength = BYTE_UNITS *
3519                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3520         sess->first_burst = BYTE_UNITS *
3521                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3522         sess->max_burst = BYTE_UNITS *
3523                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3524         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3525         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3526         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3527         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3528         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3529         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3530         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3531         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
3532         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
3533         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3534         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3535         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3536         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
3537         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
3538         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3539         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3540
3541         sess->default_taskmgmt_timeout =
3542                                 le16_to_cpu(fw_ddb_entry->def_timeout);
3543         conn->port = le16_to_cpu(fw_ddb_entry->port);
3544
3545         options = le16_to_cpu(fw_ddb_entry->options);
3546         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3547         if (!conn->ipaddress) {
3548                 rc = -ENOMEM;
3549                 goto exit_copy;
3550         }
3551
3552         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3553         if (!conn->redirect_ipaddr) {
3554                 rc = -ENOMEM;
3555                 goto exit_copy;
3556         }
3557
3558         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3559         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
3560
3561         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3562                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
3563
3564                 conn->link_local_ipv6_addr = kmemdup(
3565                                         fw_ddb_entry->link_local_ipv6_addr,
3566                                         IPv6_ADDR_LEN, GFP_KERNEL);
3567                 if (!conn->link_local_ipv6_addr) {
3568                         rc = -ENOMEM;
3569                         goto exit_copy;
3570                 }
3571         } else {
3572                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3573         }
3574
3575         if (fw_ddb_entry->iscsi_name[0]) {
3576                 rc = iscsi_switch_str_param(&sess->targetname,
3577                                             (char *)fw_ddb_entry->iscsi_name);
3578                 if (rc)
3579                         goto exit_copy;
3580         }
3581
3582         if (fw_ddb_entry->iscsi_alias[0]) {
3583                 rc = iscsi_switch_str_param(&sess->targetalias,
3584                                             (char *)fw_ddb_entry->iscsi_alias);
3585                 if (rc)
3586                         goto exit_copy;
3587         }
3588
3589         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3590
3591 exit_copy:
3592         return rc;
3593 }
3594
3595 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
3596                                        struct iscsi_bus_flash_conn *conn,
3597                                        struct dev_db_entry *fw_ddb_entry)
3598 {
3599         uint16_t options;
3600         int rc = 0;
3601
3602         options = le16_to_cpu(fw_ddb_entry->options);
3603         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
3604         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3605                 options |= BIT_8;
3606         else
3607                 options &= ~BIT_8;
3608
3609         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
3610         SET_BITVAL(sess->discovery_sess, options, BIT_4);
3611         SET_BITVAL(sess->entry_state, options, BIT_3);
3612         fw_ddb_entry->options = cpu_to_le16(options);
3613
3614         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3615         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
3616         SET_BITVAL(conn->datadgst_en, options, BIT_12);
3617         SET_BITVAL(sess->imm_data_en, options, BIT_11);
3618         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
3619         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
3620         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
3621         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
3622         SET_BITVAL(conn->snack_req_en, options, BIT_6);
3623         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
3624         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
3625         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
3626         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
3627         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
3628         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
3629
3630         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3631         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
3632         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
3633         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
3634         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
3635         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
3636         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
3637         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
3638         fw_ddb_entry->tcp_options = cpu_to_le16(options);
3639
3640         options = le16_to_cpu(fw_ddb_entry->ip_options);
3641         SET_BITVAL(conn->fragment_disable, options, BIT_4);
3642         fw_ddb_entry->ip_options = cpu_to_le16(options);
3643
3644         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
3645         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
3646                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
3647         fw_ddb_entry->iscsi_max_snd_data_seg_len =
3648                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
3649         fw_ddb_entry->iscsi_first_burst_len =
3650                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
3651         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
3652                                             BYTE_UNITS);
3653         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
3654         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
3655         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
3656         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
3657         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
3658         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
3659         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
3660         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
3661         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
3662         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
3663         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
3664         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
3665         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
3666         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
3667         fw_ddb_entry->port = cpu_to_le16(conn->port);
3668         fw_ddb_entry->def_timeout =
3669                                 cpu_to_le16(sess->default_taskmgmt_timeout);
3670
3671         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3672                 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
3673         else
3674                 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
3675
3676         if (conn->ipaddress)
3677                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
3678                        sizeof(fw_ddb_entry->ip_addr));
3679
3680         if (conn->redirect_ipaddr)
3681                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
3682                        sizeof(fw_ddb_entry->tgt_addr));
3683
3684         if (conn->link_local_ipv6_addr)
3685                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
3686                        conn->link_local_ipv6_addr,
3687                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
3688
3689         if (sess->targetname)
3690                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
3691                        sizeof(fw_ddb_entry->iscsi_name));
3692
3693         if (sess->targetalias)
3694                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
3695                        sizeof(fw_ddb_entry->iscsi_alias));
3696
3697         COPY_ISID(fw_ddb_entry->isid, sess->isid);
3698
3699         return rc;
3700 }
3701
3702 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
3703                                              struct iscsi_session *sess,
3704                                              struct dev_db_entry *fw_ddb_entry)
3705 {
3706         unsigned long options = 0;
3707         uint16_t ddb_link;
3708         uint16_t disc_parent;
3709         char ip_addr[DDB_IPADDR_LEN];
3710
3711         options = le16_to_cpu(fw_ddb_entry->options);
3712         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3713         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3714                                               &options);
3715         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3716
3717         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3718         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3719         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3720         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3721         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3722         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3723                                             &options);
3724         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3725         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3726         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3727                                              &options);
3728         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3729         sess->discovery_auth_optional =
3730                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3731         if (test_bit(ISCSIOPT_ERL1, &options))
3732                 sess->erl |= BIT_1;
3733         if (test_bit(ISCSIOPT_ERL0, &options))
3734                 sess->erl |= BIT_0;
3735
3736         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3737         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3738         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3739         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3740         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3741                 conn->tcp_timer_scale |= BIT_3;
3742         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3743                 conn->tcp_timer_scale |= BIT_2;
3744         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3745                 conn->tcp_timer_scale |= BIT_1;
3746
3747         conn->tcp_timer_scale >>= 1;
3748         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3749
3750         options = le16_to_cpu(fw_ddb_entry->ip_options);
3751         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3752
3753         conn->max_recv_dlength = BYTE_UNITS *
3754                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3755         conn->max_xmit_dlength = BYTE_UNITS *
3756                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3757         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3758         sess->first_burst = BYTE_UNITS *
3759                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3760         sess->max_burst = BYTE_UNITS *
3761                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3762         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3763         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3764         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3765         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3766         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3767         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3768         conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3769         conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
3770         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3771         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3772         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3773         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3774         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3775
3776         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
3777         if (ddb_link == DDB_ISNS)
3778                 disc_parent = ISCSI_DISC_PARENT_ISNS;
3779         else if (ddb_link == DDB_NO_LINK)
3780                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3781         else if (ddb_link < MAX_DDB_ENTRIES)
3782                 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
3783         else
3784                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3785
3786         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
3787                         iscsi_get_discovery_parent_name(disc_parent), 0);
3788
3789         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
3790                         (char *)fw_ddb_entry->iscsi_alias, 0);
3791
3792         options = le16_to_cpu(fw_ddb_entry->options);
3793         if (options & DDB_OPT_IPV6_DEVICE) {
3794                 memset(ip_addr, 0, sizeof(ip_addr));
3795                 sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
3796                 iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
3797                                 (char *)ip_addr, 0);
3798         }
3799 }
3800
3801 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
3802                                      struct dev_db_entry *fw_ddb_entry,
3803                                      struct iscsi_cls_session *cls_sess,
3804                                      struct iscsi_cls_conn *cls_conn)
3805 {
3806         int buflen = 0;
3807         struct iscsi_session *sess;
3808         struct ddb_entry *ddb_entry;
3809         struct ql4_chap_table chap_tbl;
3810         struct iscsi_conn *conn;
3811         char ip_addr[DDB_IPADDR_LEN];
3812         uint16_t options = 0;
3813
3814         sess = cls_sess->dd_data;
3815         ddb_entry = sess->dd_data;
3816         conn = cls_conn->dd_data;
3817         memset(&chap_tbl, 0, sizeof(chap_tbl));
3818
3819         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3820
3821         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3822
3823         sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
3824         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
3825
3826         memset(ip_addr, 0, sizeof(ip_addr));
3827         options = le16_to_cpu(fw_ddb_entry->options);
3828         if (options & DDB_OPT_IPV6_DEVICE) {
3829                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
3830
3831                 memset(ip_addr, 0, sizeof(ip_addr));
3832                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3833         } else {
3834                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
3835                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3836         }
3837
3838         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
3839                         (char *)ip_addr, buflen);
3840         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
3841                         (char *)fw_ddb_entry->iscsi_name, buflen);
3842         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
3843                         (char *)ha->name_string, buflen);
3844
3845         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
3846                 if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
3847                                                    chap_tbl.secret,
3848                                                    ddb_entry->chap_tbl_idx)) {
3849                         iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
3850                                         (char *)chap_tbl.name,
3851                                         strlen((char *)chap_tbl.name));
3852                         iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
3853                                         (char *)chap_tbl.secret,
3854                                         chap_tbl.secret_len);
3855                 }
3856         }
3857 }
3858
3859 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
3860                                              struct ddb_entry *ddb_entry)
3861 {
3862         struct iscsi_cls_session *cls_sess;
3863         struct iscsi_cls_conn *cls_conn;
3864         uint32_t ddb_state;
3865         dma_addr_t fw_ddb_entry_dma;
3866         struct dev_db_entry *fw_ddb_entry;
3867
3868         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3869                                           &fw_ddb_entry_dma, GFP_KERNEL);
3870         if (!fw_ddb_entry) {
3871                 ql4_printk(KERN_ERR, ha,
3872                            "%s: Unable to allocate dma buffer\n", __func__);
3873                 goto exit_session_conn_fwddb_param;
3874         }
3875
3876         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3877                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3878                                     NULL, NULL, NULL) == QLA_ERROR) {
3879                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3880                                   "get_ddb_entry for fw_ddb_index %d\n",
3881                                   ha->host_no, __func__,
3882                                   ddb_entry->fw_ddb_index));
3883                 goto exit_session_conn_fwddb_param;
3884         }
3885
3886         cls_sess = ddb_entry->sess;
3887
3888         cls_conn = ddb_entry->conn;
3889
3890         /* Update params */
3891         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
3892
3893 exit_session_conn_fwddb_param:
3894         if (fw_ddb_entry)
3895                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3896                                   fw_ddb_entry, fw_ddb_entry_dma);
3897 }
3898
3899 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
3900                                        struct ddb_entry *ddb_entry)
3901 {
3902         struct iscsi_cls_session *cls_sess;
3903         struct iscsi_cls_conn *cls_conn;
3904         struct iscsi_session *sess;
3905         struct iscsi_conn *conn;
3906         uint32_t ddb_state;
3907         dma_addr_t fw_ddb_entry_dma;
3908         struct dev_db_entry *fw_ddb_entry;
3909
3910         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3911                                           &fw_ddb_entry_dma, GFP_KERNEL);
3912         if (!fw_ddb_entry) {
3913                 ql4_printk(KERN_ERR, ha,
3914                            "%s: Unable to allocate dma buffer\n", __func__);
3915                 goto exit_session_conn_param;
3916         }
3917
3918         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3919                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3920                                     NULL, NULL, NULL) == QLA_ERROR) {
3921                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3922                                   "get_ddb_entry for fw_ddb_index %d\n",
3923                                   ha->host_no, __func__,
3924                                   ddb_entry->fw_ddb_index));
3925                 goto exit_session_conn_param;
3926         }
3927
3928         cls_sess = ddb_entry->sess;
3929         sess = cls_sess->dd_data;
3930
3931         cls_conn = ddb_entry->conn;
3932         conn = cls_conn->dd_data;
3933
3934         /* Update timers after login */
3935         ddb_entry->default_relogin_timeout =
3936                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
3937                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
3938                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
3939         ddb_entry->default_time2wait =
3940                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3941
3942         /* Update params */
3943         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3944         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3945
3946         memcpy(sess->initiatorname, ha->name_string,
3947                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
3948
3949 exit_session_conn_param:
3950         if (fw_ddb_entry)
3951                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3952                                   fw_ddb_entry, fw_ddb_entry_dma);
3953 }
3954
3955 /*
3956  * Timer routines
3957  */
3958 static void qla4xxx_timer(struct timer_list *t);
3959
3960 static void qla4xxx_start_timer(struct scsi_qla_host *ha,
3961                                 unsigned long interval)
3962 {
3963         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
3964                      __func__, ha->host->host_no));
3965         timer_setup(&ha->timer, qla4xxx_timer, 0);
3966         ha->timer.expires = jiffies + interval * HZ;
3967         add_timer(&ha->timer);
3968         ha->timer_active = 1;
3969 }
3970
3971 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
3972 {
3973         del_timer_sync(&ha->timer);
3974         ha->timer_active = 0;
3975 }
3976
3977 /***
3978  * qla4xxx_mark_device_missing - blocks the session
3979  * @cls_session: Pointer to the session to be blocked
3980  * @ddb_entry: Pointer to device database entry
3981  *
3982  * This routine marks a device missing and close connection.
3983  **/
3984 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
3985 {
3986         iscsi_block_session(cls_session);
3987 }
3988
3989 /**
3990  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
3991  * @ha: Pointer to host adapter structure.
3992  *
3993  * This routine marks a device missing and resets the relogin retry count.
3994  **/
3995 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
3996 {
3997         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
3998 }
3999
4000 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
4001                                        struct ddb_entry *ddb_entry,
4002                                        struct scsi_cmnd *cmd)
4003 {
4004         struct srb *srb;
4005
4006         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
4007         if (!srb)
4008                 return srb;
4009
4010         kref_init(&srb->srb_ref);
4011         srb->ha = ha;
4012         srb->ddb = ddb_entry;
4013         srb->cmd = cmd;
4014         srb->flags = 0;
4015         CMD_SP(cmd) = (void *)srb;
4016
4017         return srb;
4018 }
4019
4020 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
4021 {
4022         struct scsi_cmnd *cmd = srb->cmd;
4023
4024         if (srb->flags & SRB_DMA_VALID) {
4025                 scsi_dma_unmap(cmd);
4026                 srb->flags &= ~SRB_DMA_VALID;
4027         }
4028         CMD_SP(cmd) = NULL;
4029 }
4030
4031 void qla4xxx_srb_compl(struct kref *ref)
4032 {
4033         struct srb *srb = container_of(ref, struct srb, srb_ref);
4034         struct scsi_cmnd *cmd = srb->cmd;
4035         struct scsi_qla_host *ha = srb->ha;
4036
4037         qla4xxx_srb_free_dma(ha, srb);
4038
4039         mempool_free(srb, ha->srb_mempool);
4040
4041         cmd->scsi_done(cmd);
4042 }
4043
4044 /**
4045  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
4046  * @host: scsi host
4047  * @cmd: Pointer to Linux's SCSI command structure
4048  *
4049  * Remarks:
4050  * This routine is invoked by Linux to send a SCSI command to the driver.
4051  * The mid-level driver tries to ensure that queuecommand never gets
4052  * invoked concurrently with itself or the interrupt handler (although
4053  * the interrupt handler may call this routine as part of request-
4054  * completion handling).   Unfortunely, it sometimes calls the scheduler
4055  * in interrupt context which is a big NO! NO!.
4056  **/
4057 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
4058 {
4059         struct scsi_qla_host *ha = to_qla_host(host);
4060         struct ddb_entry *ddb_entry = cmd->device->hostdata;
4061         struct iscsi_cls_session *sess = ddb_entry->sess;
4062         struct srb *srb;
4063         int rval;
4064
4065         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4066                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
4067                         cmd->result = DID_NO_CONNECT << 16;
4068                 else
4069                         cmd->result = DID_REQUEUE << 16;
4070                 goto qc_fail_command;
4071         }
4072
4073         if (!sess) {
4074                 cmd->result = DID_IMM_RETRY << 16;
4075                 goto qc_fail_command;
4076         }
4077
4078         rval = iscsi_session_chkready(sess);
4079         if (rval) {
4080                 cmd->result = rval;
4081                 goto qc_fail_command;
4082         }
4083
4084         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4085             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4086             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4087             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4088             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4089             !test_bit(AF_ONLINE, &ha->flags) ||
4090             !test_bit(AF_LINK_UP, &ha->flags) ||
4091             test_bit(AF_LOOPBACK, &ha->flags) ||
4092             test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
4093             test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
4094             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
4095                 goto qc_host_busy;
4096
4097         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
4098         if (!srb)
4099                 goto qc_host_busy;
4100
4101         rval = qla4xxx_send_command_to_isp(ha, srb);
4102         if (rval != QLA_SUCCESS)
4103                 goto qc_host_busy_free_sp;
4104
4105         return 0;
4106
4107 qc_host_busy_free_sp:
4108         qla4xxx_srb_free_dma(ha, srb);
4109         mempool_free(srb, ha->srb_mempool);
4110
4111 qc_host_busy:
4112         return SCSI_MLQUEUE_HOST_BUSY;
4113
4114 qc_fail_command:
4115         cmd->scsi_done(cmd);
4116
4117         return 0;
4118 }
4119
4120 /**
4121  * qla4xxx_mem_free - frees memory allocated to adapter
4122  * @ha: Pointer to host adapter structure.
4123  *
4124  * Frees memory previously allocated by qla4xxx_mem_alloc
4125  **/
4126 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
4127 {
4128         if (ha->queues)
4129                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
4130                                   ha->queues_dma);
4131
4132          if (ha->fw_dump)
4133                 vfree(ha->fw_dump);
4134
4135         ha->queues_len = 0;
4136         ha->queues = NULL;
4137         ha->queues_dma = 0;
4138         ha->request_ring = NULL;
4139         ha->request_dma = 0;
4140         ha->response_ring = NULL;
4141         ha->response_dma = 0;
4142         ha->shadow_regs = NULL;
4143         ha->shadow_regs_dma = 0;
4144         ha->fw_dump = NULL;
4145         ha->fw_dump_size = 0;
4146
4147         /* Free srb pool. */
4148         if (ha->srb_mempool)
4149                 mempool_destroy(ha->srb_mempool);
4150
4151         ha->srb_mempool = NULL;
4152
4153         if (ha->chap_dma_pool)
4154                 dma_pool_destroy(ha->chap_dma_pool);
4155
4156         if (ha->chap_list)
4157                 vfree(ha->chap_list);
4158         ha->chap_list = NULL;
4159
4160         if (ha->fw_ddb_dma_pool)
4161                 dma_pool_destroy(ha->fw_ddb_dma_pool);
4162
4163         /* release io space registers  */
4164         if (is_qla8022(ha)) {
4165                 if (ha->nx_pcibase)
4166                         iounmap(
4167                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
4168         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4169                 if (ha->nx_pcibase)
4170                         iounmap(
4171                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
4172         } else if (ha->reg) {
4173                 iounmap(ha->reg);
4174         }
4175
4176         if (ha->reset_tmplt.buff)
4177                 vfree(ha->reset_tmplt.buff);
4178
4179         pci_release_regions(ha->pdev);
4180 }
4181
4182 /**
4183  * qla4xxx_mem_alloc - allocates memory for use by adapter.
4184  * @ha: Pointer to host adapter structure
4185  *
4186  * Allocates DMA memory for request and response queues. Also allocates memory
4187  * for srbs.
4188  **/
4189 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
4190 {
4191         unsigned long align;
4192
4193         /* Allocate contiguous block of DMA memory for queues. */
4194         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4195                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
4196                           sizeof(struct shadow_regs) +
4197                           MEM_ALIGN_VALUE +
4198                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
4199         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
4200                                         &ha->queues_dma, GFP_KERNEL);
4201         if (ha->queues == NULL) {
4202                 ql4_printk(KERN_WARNING, ha,
4203                     "Memory Allocation failed - queues.\n");
4204
4205                 goto mem_alloc_error_exit;
4206         }
4207         memset(ha->queues, 0, ha->queues_len);
4208
4209         /*
4210          * As per RISC alignment requirements -- the bus-address must be a
4211          * multiple of the request-ring size (in bytes).
4212          */
4213         align = 0;
4214         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
4215                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
4216                                            (MEM_ALIGN_VALUE - 1));
4217
4218         /* Update request and response queue pointers. */
4219         ha->request_dma = ha->queues_dma + align;
4220         ha->request_ring = (struct queue_entry *) (ha->queues + align);
4221         ha->response_dma = ha->queues_dma + align +
4222                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
4223         ha->response_ring = (struct queue_entry *) (ha->queues + align +
4224                                                     (REQUEST_QUEUE_DEPTH *
4225                                                      QUEUE_SIZE));
4226         ha->shadow_regs_dma = ha->queues_dma + align +
4227                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4228                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
4229         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
4230                                                   (REQUEST_QUEUE_DEPTH *
4231                                                    QUEUE_SIZE) +
4232                                                   (RESPONSE_QUEUE_DEPTH *
4233                                                    QUEUE_SIZE));
4234
4235         /* Allocate memory for srb pool. */
4236         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
4237                                          mempool_free_slab, srb_cachep);
4238         if (ha->srb_mempool == NULL) {
4239                 ql4_printk(KERN_WARNING, ha,
4240                     "Memory Allocation failed - SRB Pool.\n");
4241
4242                 goto mem_alloc_error_exit;
4243         }
4244
4245         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
4246                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
4247
4248         if (ha->chap_dma_pool == NULL) {
4249                 ql4_printk(KERN_WARNING, ha,
4250                     "%s: chap_dma_pool allocation failed..\n", __func__);
4251                 goto mem_alloc_error_exit;
4252         }
4253
4254         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
4255                                               DDB_DMA_BLOCK_SIZE, 8, 0);
4256
4257         if (ha->fw_ddb_dma_pool == NULL) {
4258                 ql4_printk(KERN_WARNING, ha,
4259                            "%s: fw_ddb_dma_pool allocation failed..\n",
4260                            __func__);
4261                 goto mem_alloc_error_exit;
4262         }
4263
4264         return QLA_SUCCESS;
4265
4266 mem_alloc_error_exit:
4267         qla4xxx_mem_free(ha);
4268         return QLA_ERROR;
4269 }
4270
4271 /**
4272  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
4273  * @ha: adapter block pointer.
4274  *
4275  * Note: The caller should not hold the idc lock.
4276  **/
4277 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
4278 {
4279         uint32_t temp, temp_state, temp_val;
4280         int status = QLA_SUCCESS;
4281
4282         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
4283
4284         temp_state = qla82xx_get_temp_state(temp);
4285         temp_val = qla82xx_get_temp_val(temp);
4286
4287         if (temp_state == QLA82XX_TEMP_PANIC) {
4288                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
4289                            " exceeds maximum allowed. Hardware has been shut"
4290                            " down.\n", temp_val);
4291                 status = QLA_ERROR;
4292         } else if (temp_state == QLA82XX_TEMP_WARN) {
4293                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
4294                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
4295                                    " degrees C exceeds operating range."
4296                                    " Immediate action needed.\n", temp_val);
4297         } else {
4298                 if (ha->temperature == QLA82XX_TEMP_WARN)
4299                         ql4_printk(KERN_INFO, ha, "Device temperature is"
4300                                    " now %d degrees C in normal range.\n",
4301                                    temp_val);
4302         }
4303         ha->temperature = temp_state;
4304         return status;
4305 }
4306
4307 /**
4308  * qla4_8xxx_check_fw_alive  - Check firmware health
4309  * @ha: Pointer to host adapter structure.
4310  *
4311  * Context: Interrupt
4312  **/
4313 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
4314 {
4315         uint32_t fw_heartbeat_counter;
4316         int status = QLA_SUCCESS;
4317
4318         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
4319                                                    QLA8XXX_PEG_ALIVE_COUNTER);
4320         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
4321         if (fw_heartbeat_counter == 0xffffffff) {
4322                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
4323                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
4324                     ha->host_no, __func__));
4325                 return status;
4326         }
4327
4328         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
4329                 ha->seconds_since_last_heartbeat++;
4330                 /* FW not alive after 2 seconds */
4331                 if (ha->seconds_since_last_heartbeat == 2) {
4332                         ha->seconds_since_last_heartbeat = 0;
4333                         qla4_8xxx_dump_peg_reg(ha);
4334                         status = QLA_ERROR;
4335                 }
4336         } else
4337                 ha->seconds_since_last_heartbeat = 0;
4338
4339         ha->fw_heartbeat_counter = fw_heartbeat_counter;
4340         return status;
4341 }
4342
4343 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
4344 {
4345         uint32_t halt_status;
4346         int halt_status_unrecoverable = 0;
4347
4348         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
4349
4350         if (is_qla8022(ha)) {
4351                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4352                            __func__);
4353                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4354                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4355                                 CRB_NIU_XG_PAUSE_CTL_P1);
4356
4357                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
4358                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
4359                                    __func__);
4360                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
4361                         halt_status_unrecoverable = 1;
4362         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4363                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
4364                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
4365                                    __func__);
4366                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
4367                         halt_status_unrecoverable = 1;
4368         }
4369
4370         /*
4371          * Since we cannot change dev_state in interrupt context,
4372          * set appropriate DPC flag then wakeup DPC
4373          */
4374         if (halt_status_unrecoverable) {
4375                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4376         } else {
4377                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
4378                            __func__);
4379                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4380         }
4381         qla4xxx_mailbox_premature_completion(ha);
4382         qla4xxx_wake_dpc(ha);
4383 }
4384
4385 /**
4386  * qla4_8xxx_watchdog - Poll dev state
4387  * @ha: Pointer to host adapter structure.
4388  *
4389  * Context: Interrupt
4390  **/
4391 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
4392 {
4393         uint32_t dev_state;
4394         uint32_t idc_ctrl;
4395
4396         if (is_qla8032(ha) &&
4397             (qla4_83xx_is_detached(ha) == QLA_SUCCESS))
4398                 WARN_ONCE(1, "%s: iSCSI function %d marked invisible\n",
4399                           __func__, ha->func_num);
4400
4401         /* don't poll if reset is going on */
4402         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4403             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4404             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
4405                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
4406
4407                 if (qla4_8xxx_check_temp(ha)) {
4408                         if (is_qla8022(ha)) {
4409                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
4410                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4411                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4412                                                 CRB_NIU_XG_PAUSE_CTL_P1);
4413                         }
4414                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4415                         qla4xxx_wake_dpc(ha);
4416                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
4417                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4418
4419                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
4420                                    __func__);
4421
4422                         if (is_qla8032(ha) || is_qla8042(ha)) {
4423                                 idc_ctrl = qla4_83xx_rd_reg(ha,
4424                                                         QLA83XX_IDC_DRV_CTRL);
4425                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
4426                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
4427                                                    __func__);
4428                                         qla4xxx_mailbox_premature_completion(
4429                                                                             ha);
4430                                 }
4431                         }
4432
4433                         if ((is_qla8032(ha) || is_qla8042(ha)) ||
4434                             (is_qla8022(ha) && !ql4xdontresethba)) {
4435                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4436                                 qla4xxx_wake_dpc(ha);
4437                         }
4438                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
4439                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4440                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
4441                             __func__);
4442                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
4443                         qla4xxx_wake_dpc(ha);
4444                 } else  {
4445                         /* Check firmware health */
4446                         if (qla4_8xxx_check_fw_alive(ha))
4447                                 qla4_8xxx_process_fw_error(ha);
4448                 }
4449         }
4450 }
4451
4452 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
4453 {
4454         struct iscsi_session *sess;
4455         struct ddb_entry *ddb_entry;
4456         struct scsi_qla_host *ha;
4457
4458         sess = cls_sess->dd_data;
4459         ddb_entry = sess->dd_data;
4460         ha = ddb_entry->ha;
4461
4462         if (!(ddb_entry->ddb_type == FLASH_DDB))
4463                 return;
4464
4465         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
4466             !iscsi_is_session_online(cls_sess)) {
4467                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
4468                     INVALID_ENTRY) {
4469                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
4470                                         0) {
4471                                 atomic_set(&ddb_entry->retry_relogin_timer,
4472                                            INVALID_ENTRY);
4473                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4474                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4475                                 DEBUG2(ql4_printk(KERN_INFO, ha,
4476                                        "%s: index [%d] login device\n",
4477                                         __func__, ddb_entry->fw_ddb_index));
4478                         } else
4479                                 atomic_dec(&ddb_entry->retry_relogin_timer);
4480                 }
4481         }
4482
4483         /* Wait for relogin to timeout */
4484         if (atomic_read(&ddb_entry->relogin_timer) &&
4485             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
4486                 /*
4487                  * If the relogin times out and the device is
4488                  * still NOT ONLINE then try and relogin again.
4489                  */
4490                 if (!iscsi_is_session_online(cls_sess)) {
4491                         /* Reset retry relogin timer */
4492                         atomic_inc(&ddb_entry->relogin_retry_count);
4493                         DEBUG2(ql4_printk(KERN_INFO, ha,
4494                                 "%s: index[%d] relogin timed out-retrying"
4495                                 " relogin (%d), retry (%d)\n", __func__,
4496                                 ddb_entry->fw_ddb_index,
4497                                 atomic_read(&ddb_entry->relogin_retry_count),
4498                                 ddb_entry->default_time2wait + 4));
4499                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4500                         atomic_set(&ddb_entry->retry_relogin_timer,
4501                                    ddb_entry->default_time2wait + 4);
4502                 }
4503         }
4504 }
4505
4506 /**
4507  * qla4xxx_timer - checks every second for work to do.
4508  * @ha: Pointer to host adapter structure.
4509  **/
4510 static void qla4xxx_timer(struct timer_list *t)
4511 {
4512         struct scsi_qla_host *ha = from_timer(ha, t, timer);
4513         int start_dpc = 0;
4514         uint16_t w;
4515
4516         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
4517
4518         /* If we are in the middle of AER/EEH processing
4519          * skip any processing and reschedule the timer
4520          */
4521         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4522                 mod_timer(&ha->timer, jiffies + HZ);
4523                 return;
4524         }
4525
4526         /* Hardware read to trigger an EEH error during mailbox waits. */
4527         if (!pci_channel_offline(ha->pdev))
4528                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
4529
4530         if (is_qla80XX(ha))
4531                 qla4_8xxx_watchdog(ha);
4532
4533         if (is_qla40XX(ha)) {
4534                 /* Check for heartbeat interval. */
4535                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
4536                     ha->heartbeat_interval != 0) {
4537                         ha->seconds_since_last_heartbeat++;
4538                         if (ha->seconds_since_last_heartbeat >
4539                             ha->heartbeat_interval + 2)
4540                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4541                 }
4542         }
4543
4544         /* Process any deferred work. */
4545         if (!list_empty(&ha->work_list))
4546                 start_dpc++;
4547
4548         /* Wakeup the dpc routine for this adapter, if needed. */
4549         if (start_dpc ||
4550              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4551              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
4552              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
4553              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4554              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4555              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
4556              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
4557              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4558              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4559              test_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags) ||
4560              test_bit(DPC_AEN, &ha->dpc_flags)) {
4561                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
4562                               " - dpc flags = 0x%lx\n",
4563                               ha->host_no, __func__, ha->dpc_flags));
4564                 qla4xxx_wake_dpc(ha);
4565         }
4566
4567         /* Reschedule timer thread to call us back in one second */
4568         mod_timer(&ha->timer, jiffies + HZ);
4569
4570         DEBUG2(ha->seconds_since_last_intr++);
4571 }
4572
4573 /**
4574  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
4575  * @ha: Pointer to host adapter structure.
4576  *
4577  * This routine stalls the driver until all outstanding commands are returned.
4578  * Caller must release the Hardware Lock prior to calling this routine.
4579  **/
4580 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
4581 {
4582         uint32_t index = 0;
4583         unsigned long flags;
4584         struct scsi_cmnd *cmd;
4585         unsigned long wtime;
4586         uint32_t wtmo;
4587
4588         if (is_qla40XX(ha))
4589                 wtmo = WAIT_CMD_TOV;
4590         else
4591                 wtmo = ha->nx_reset_timeout / 2;
4592
4593         wtime = jiffies + (wtmo * HZ);
4594
4595         DEBUG2(ql4_printk(KERN_INFO, ha,
4596                           "Wait up to %u seconds for cmds to complete\n",
4597                           wtmo));
4598
4599         while (!time_after_eq(jiffies, wtime)) {
4600                 spin_lock_irqsave(&ha->hardware_lock, flags);
4601                 /* Find a command that hasn't completed. */
4602                 for (index = 0; index < ha->host->can_queue; index++) {
4603                         cmd = scsi_host_find_tag(ha->host, index);
4604                         /*
4605                          * We cannot just check if the index is valid,
4606                          * becase if we are run from the scsi eh, then
4607                          * the scsi/block layer is going to prevent
4608                          * the tag from being released.
4609                          */
4610                         if (cmd != NULL && CMD_SP(cmd))
4611                                 break;
4612                 }
4613                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4614
4615                 /* If No Commands are pending, wait is complete */
4616                 if (index == ha->host->can_queue)
4617                         return QLA_SUCCESS;
4618
4619                 msleep(1000);
4620         }
4621         /* If we timed out on waiting for commands to come back
4622          * return ERROR. */
4623         return QLA_ERROR;
4624 }
4625
4626 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
4627 {
4628         uint32_t ctrl_status;
4629         unsigned long flags = 0;
4630
4631         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
4632
4633         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
4634                 return QLA_ERROR;
4635
4636         spin_lock_irqsave(&ha->hardware_lock, flags);
4637
4638         /*
4639          * If the SCSI Reset Interrupt bit is set, clear it.
4640          * Otherwise, the Soft Reset won't work.
4641          */
4642         ctrl_status = readw(&ha->reg->ctrl_status);
4643         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
4644                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4645
4646         /* Issue Soft Reset */
4647         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
4648         readl(&ha->reg->ctrl_status);
4649
4650         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4651         return QLA_SUCCESS;
4652 }
4653
4654 /**
4655  * qla4xxx_soft_reset - performs soft reset.
4656  * @ha: Pointer to host adapter structure.
4657  **/
4658 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
4659 {
4660         uint32_t max_wait_time;
4661         unsigned long flags = 0;
4662         int status;
4663         uint32_t ctrl_status;
4664
4665         status = qla4xxx_hw_reset(ha);
4666         if (status != QLA_SUCCESS)
4667                 return status;
4668
4669         status = QLA_ERROR;
4670         /* Wait until the Network Reset Intr bit is cleared */
4671         max_wait_time = RESET_INTR_TOV;
4672         do {
4673                 spin_lock_irqsave(&ha->hardware_lock, flags);
4674                 ctrl_status = readw(&ha->reg->ctrl_status);
4675                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4676
4677                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
4678                         break;
4679
4680                 msleep(1000);
4681         } while ((--max_wait_time));
4682
4683         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
4684                 DEBUG2(printk(KERN_WARNING
4685                               "scsi%ld: Network Reset Intr not cleared by "
4686                               "Network function, clearing it now!\n",
4687                               ha->host_no));
4688                 spin_lock_irqsave(&ha->hardware_lock, flags);
4689                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
4690                 readl(&ha->reg->ctrl_status);
4691                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4692         }
4693
4694         /* Wait until the firmware tells us the Soft Reset is done */
4695         max_wait_time = SOFT_RESET_TOV;
4696         do {
4697                 spin_lock_irqsave(&ha->hardware_lock, flags);
4698                 ctrl_status = readw(&ha->reg->ctrl_status);
4699                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4700
4701                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
4702                         status = QLA_SUCCESS;
4703                         break;
4704                 }
4705
4706                 msleep(1000);
4707         } while ((--max_wait_time));
4708
4709         /*
4710          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
4711          * after the soft reset has taken place.
4712          */
4713         spin_lock_irqsave(&ha->hardware_lock, flags);
4714         ctrl_status = readw(&ha->reg->ctrl_status);
4715         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
4716                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4717                 readl(&ha->reg->ctrl_status);
4718         }
4719         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4720
4721         /* If soft reset fails then most probably the bios on other
4722          * function is also enabled.
4723          * Since the initialization is sequential the other fn
4724          * wont be able to acknowledge the soft reset.
4725          * Issue a force soft reset to workaround this scenario.
4726          */
4727         if (max_wait_time == 0) {
4728                 /* Issue Force Soft Reset */
4729                 spin_lock_irqsave(&ha->hardware_lock, flags);
4730                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
4731                 readl(&ha->reg->ctrl_status);
4732                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4733                 /* Wait until the firmware tells us the Soft Reset is done */
4734                 max_wait_time = SOFT_RESET_TOV;
4735                 do {
4736                         spin_lock_irqsave(&ha->hardware_lock, flags);
4737                         ctrl_status = readw(&ha->reg->ctrl_status);
4738                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4739
4740                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
4741                                 status = QLA_SUCCESS;
4742                                 break;
4743                         }
4744
4745                         msleep(1000);
4746                 } while ((--max_wait_time));
4747         }
4748
4749         return status;
4750 }
4751
4752 /**
4753  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
4754  * @ha: Pointer to host adapter structure.
4755  * @res: returned scsi status
4756  *
4757  * This routine is called just prior to a HARD RESET to return all
4758  * outstanding commands back to the Operating System.
4759  * Caller should make sure that the following locks are released
4760  * before this calling routine: Hardware lock, and io_request_lock.
4761  **/
4762 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
4763 {
4764         struct srb *srb;
4765         int i;
4766         unsigned long flags;
4767
4768         spin_lock_irqsave(&ha->hardware_lock, flags);
4769         for (i = 0; i < ha->host->can_queue; i++) {
4770                 srb = qla4xxx_del_from_active_array(ha, i);
4771                 if (srb != NULL) {
4772                         srb->cmd->result = res;
4773                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4774                 }
4775         }
4776         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4777 }
4778
4779 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
4780 {
4781         clear_bit(AF_ONLINE, &ha->flags);
4782
4783         /* Disable the board */
4784         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
4785
4786         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
4787         qla4xxx_mark_all_devices_missing(ha);
4788         clear_bit(AF_INIT_DONE, &ha->flags);
4789 }
4790
4791 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
4792 {
4793         struct iscsi_session *sess;
4794         struct ddb_entry *ddb_entry;
4795
4796         sess = cls_session->dd_data;
4797         ddb_entry = sess->dd_data;
4798         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
4799
4800         if (ddb_entry->ddb_type == FLASH_DDB)
4801                 iscsi_block_session(ddb_entry->sess);
4802         else
4803                 iscsi_session_failure(cls_session->dd_data,
4804                                       ISCSI_ERR_CONN_FAILED);
4805 }
4806
4807 /**
4808  * qla4xxx_recover_adapter - recovers adapter after a fatal error
4809  * @ha: Pointer to host adapter structure.
4810  **/
4811 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
4812 {
4813         int status = QLA_ERROR;
4814         uint8_t reset_chip = 0;
4815         uint32_t dev_state;
4816         unsigned long wait;
4817
4818         /* Stall incoming I/O until we are done */
4819         scsi_block_requests(ha->host);
4820         clear_bit(AF_ONLINE, &ha->flags);
4821         clear_bit(AF_LINK_UP, &ha->flags);
4822
4823         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
4824
4825         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4826
4827         if ((is_qla8032(ha) || is_qla8042(ha)) &&
4828             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4829                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4830                            __func__);
4831                 /* disable pause frame for ISP83xx */
4832                 qla4_83xx_disable_pause(ha);
4833         }
4834
4835         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
4836
4837         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
4838                 reset_chip = 1;
4839
4840         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
4841          * do not reset adapter, jump to initialize_adapter */
4842         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4843                 status = QLA_SUCCESS;
4844                 goto recover_ha_init_adapter;
4845         }
4846
4847         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
4848          * from eh_host_reset or ioctl module */
4849         if (is_qla80XX(ha) && !reset_chip &&
4850             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4851
4852                 DEBUG2(ql4_printk(KERN_INFO, ha,
4853                     "scsi%ld: %s - Performing stop_firmware...\n",
4854                     ha->host_no, __func__));
4855                 status = ha->isp_ops->reset_firmware(ha);
4856                 if (status == QLA_SUCCESS) {
4857                         ha->isp_ops->disable_intrs(ha);
4858                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4859                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4860                 } else {
4861                         /* If the stop_firmware fails then
4862                          * reset the entire chip */
4863                         reset_chip = 1;
4864                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4865                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
4866                 }
4867         }
4868
4869         /* Issue full chip reset if recovering from a catastrophic error,
4870          * or if stop_firmware fails for ISP-8xxx.
4871          * This is the default case for ISP-4xxx */
4872         if (is_qla40XX(ha) || reset_chip) {
4873                 if (is_qla40XX(ha))
4874                         goto chip_reset;
4875
4876                 /* Check if 8XXX firmware is alive or not
4877                  * We may have arrived here from NEED_RESET
4878                  * detection only */
4879                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
4880                         goto chip_reset;
4881
4882                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
4883                 while (time_before(jiffies, wait)) {
4884                         if (qla4_8xxx_check_fw_alive(ha)) {
4885                                 qla4xxx_mailbox_premature_completion(ha);
4886                                 break;
4887                         }
4888
4889                         set_current_state(TASK_UNINTERRUPTIBLE);
4890                         schedule_timeout(HZ);
4891                 }
4892 chip_reset:
4893                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
4894                         qla4xxx_cmd_wait(ha);
4895
4896                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4897                 DEBUG2(ql4_printk(KERN_INFO, ha,
4898                     "scsi%ld: %s - Performing chip reset..\n",
4899                     ha->host_no, __func__));
4900                 status = ha->isp_ops->reset_chip(ha);
4901                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4902         }
4903
4904         /* Flush any pending ddb changed AENs */
4905         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4906
4907 recover_ha_init_adapter:
4908         /* Upon successful firmware/chip reset, re-initialize the adapter */
4909         if (status == QLA_SUCCESS) {
4910                 /* For ISP-4xxx, force function 1 to always initialize
4911                  * before function 3 to prevent both funcions from
4912                  * stepping on top of the other */
4913                 if (is_qla40XX(ha) && (ha->mac_index == 3))
4914                         ssleep(6);
4915
4916                 /* NOTE: AF_ONLINE flag set upon successful completion of
4917                  * qla4xxx_initialize_adapter */
4918                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
4919                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
4920                         status = qla4_8xxx_check_init_adapter_retry(ha);
4921                         if (status == QLA_ERROR) {
4922                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Don't retry recover adapter\n",
4923                                            ha->host_no, __func__);
4924                                 qla4xxx_dead_adapter_cleanup(ha);
4925                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4926                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4927                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4928                                           &ha->dpc_flags);
4929                                 goto exit_recover;
4930                         }
4931                 }
4932         }
4933
4934         /* Retry failed adapter initialization, if necessary
4935          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
4936          * case to prevent ping-pong resets between functions */
4937         if (!test_bit(AF_ONLINE, &ha->flags) &&
4938             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4939                 /* Adapter initialization failed, see if we can retry
4940                  * resetting the ha.
4941                  * Since we don't want to block the DPC for too long
4942                  * with multiple resets in the same thread,
4943                  * utilize DPC to retry */
4944                 if (is_qla80XX(ha)) {
4945                         ha->isp_ops->idc_lock(ha);
4946                         dev_state = qla4_8xxx_rd_direct(ha,
4947                                                         QLA8XXX_CRB_DEV_STATE);
4948                         ha->isp_ops->idc_unlock(ha);
4949                         if (dev_state == QLA8XXX_DEV_FAILED) {
4950                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
4951                                            "recover adapter. H/W is in Failed "
4952                                            "state\n", __func__);
4953                                 qla4xxx_dead_adapter_cleanup(ha);
4954                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4955                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4956                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4957                                                 &ha->dpc_flags);
4958                                 status = QLA_ERROR;
4959
4960                                 goto exit_recover;
4961                         }
4962                 }
4963
4964                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
4965                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
4966                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
4967                                       "(%d) more times\n", ha->host_no,
4968                                       ha->retry_reset_ha_cnt));
4969                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4970                         status = QLA_ERROR;
4971                 } else {
4972                         if (ha->retry_reset_ha_cnt > 0) {
4973                                 /* Schedule another Reset HA--DPC will retry */
4974                                 ha->retry_reset_ha_cnt--;
4975                                 DEBUG2(printk("scsi%ld: recover adapter - "
4976                                               "retry remaining %d\n",
4977                                               ha->host_no,
4978                                               ha->retry_reset_ha_cnt));
4979                                 status = QLA_ERROR;
4980                         }
4981
4982                         if (ha->retry_reset_ha_cnt == 0) {
4983                                 /* Recover adapter retries have been exhausted.
4984                                  * Adapter DEAD */
4985                                 DEBUG2(printk("scsi%ld: recover adapter "
4986                                               "failed - board disabled\n",
4987                                               ha->host_no));
4988                                 qla4xxx_dead_adapter_cleanup(ha);
4989                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4990                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4991                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4992                                           &ha->dpc_flags);
4993                                 status = QLA_ERROR;
4994                         }
4995                 }
4996         } else {
4997                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4998                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4999                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5000         }
5001
5002 exit_recover:
5003         ha->adapter_error_count++;
5004
5005         if (test_bit(AF_ONLINE, &ha->flags))
5006                 ha->isp_ops->enable_intrs(ha);
5007
5008         scsi_unblock_requests(ha->host);
5009
5010         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5011         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
5012             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
5013
5014         return status;
5015 }
5016
5017 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
5018 {
5019         struct iscsi_session *sess;
5020         struct ddb_entry *ddb_entry;
5021         struct scsi_qla_host *ha;
5022
5023         sess = cls_session->dd_data;
5024         ddb_entry = sess->dd_data;
5025         ha = ddb_entry->ha;
5026         if (!iscsi_is_session_online(cls_session)) {
5027                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
5028                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5029                                    " unblock session\n", ha->host_no, __func__,
5030                                    ddb_entry->fw_ddb_index);
5031                         iscsi_unblock_session(ddb_entry->sess);
5032                 } else {
5033                         /* Trigger relogin */
5034                         if (ddb_entry->ddb_type == FLASH_DDB) {
5035                                 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
5036                                       test_bit(DF_DISABLE_RELOGIN,
5037                                                &ddb_entry->flags)))
5038                                         qla4xxx_arm_relogin_timer(ddb_entry);
5039                         } else
5040                                 iscsi_session_failure(cls_session->dd_data,
5041                                                       ISCSI_ERR_CONN_FAILED);
5042                 }
5043         }
5044 }
5045
5046 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
5047 {
5048         struct iscsi_session *sess;
5049         struct ddb_entry *ddb_entry;
5050         struct scsi_qla_host *ha;
5051
5052         sess = cls_session->dd_data;
5053         ddb_entry = sess->dd_data;
5054         ha = ddb_entry->ha;
5055         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5056                    " unblock session\n", ha->host_no, __func__,
5057                    ddb_entry->fw_ddb_index);
5058
5059         iscsi_unblock_session(ddb_entry->sess);
5060
5061         /* Start scan target */
5062         if (test_bit(AF_ONLINE, &ha->flags)) {
5063                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5064                            " start scan\n", ha->host_no, __func__,
5065                            ddb_entry->fw_ddb_index);
5066                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
5067         }
5068         return QLA_SUCCESS;
5069 }
5070
5071 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
5072 {
5073         struct iscsi_session *sess;
5074         struct ddb_entry *ddb_entry;
5075         struct scsi_qla_host *ha;
5076         int status = QLA_SUCCESS;
5077
5078         sess = cls_session->dd_data;
5079         ddb_entry = sess->dd_data;
5080         ha = ddb_entry->ha;
5081         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5082                    " unblock user space session\n", ha->host_no, __func__,
5083                    ddb_entry->fw_ddb_index);
5084
5085         if (!iscsi_is_session_online(cls_session)) {
5086                 iscsi_conn_start(ddb_entry->conn);
5087                 iscsi_conn_login_event(ddb_entry->conn,
5088                                        ISCSI_CONN_STATE_LOGGED_IN);
5089         } else {
5090                 ql4_printk(KERN_INFO, ha,
5091                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
5092                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
5093                            cls_session->sid);
5094                 status = QLA_ERROR;
5095         }
5096
5097         return status;
5098 }
5099
5100 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
5101 {
5102         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
5103 }
5104
5105 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
5106 {
5107         uint16_t relogin_timer;
5108         struct iscsi_session *sess;
5109         struct ddb_entry *ddb_entry;
5110         struct scsi_qla_host *ha;
5111
5112         sess = cls_sess->dd_data;
5113         ddb_entry = sess->dd_data;
5114         ha = ddb_entry->ha;
5115
5116         relogin_timer = max(ddb_entry->default_relogin_timeout,
5117                             (uint16_t)RELOGIN_TOV);
5118         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
5119
5120         DEBUG2(ql4_printk(KERN_INFO, ha,
5121                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
5122                           ddb_entry->fw_ddb_index, relogin_timer));
5123
5124         qla4xxx_login_flash_ddb(cls_sess);
5125 }
5126
5127 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
5128 {
5129         struct iscsi_session *sess;
5130         struct ddb_entry *ddb_entry;
5131         struct scsi_qla_host *ha;
5132
5133         sess = cls_sess->dd_data;
5134         ddb_entry = sess->dd_data;
5135         ha = ddb_entry->ha;
5136
5137         if (!(ddb_entry->ddb_type == FLASH_DDB))
5138                 return;
5139
5140         if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
5141                 return;
5142
5143         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
5144             !iscsi_is_session_online(cls_sess)) {
5145                 DEBUG2(ql4_printk(KERN_INFO, ha,
5146                                   "relogin issued\n"));
5147                 qla4xxx_relogin_flash_ddb(cls_sess);
5148         }
5149 }
5150
5151 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
5152 {
5153         if (ha->dpc_thread)
5154                 queue_work(ha->dpc_thread, &ha->dpc_work);
5155 }
5156
5157 static struct qla4_work_evt *
5158 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
5159                    enum qla4_work_type type)
5160 {
5161         struct qla4_work_evt *e;
5162         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
5163
5164         e = kzalloc(size, GFP_ATOMIC);
5165         if (!e)
5166                 return NULL;
5167
5168         INIT_LIST_HEAD(&e->list);
5169         e->type = type;
5170         return e;
5171 }
5172
5173 static void qla4xxx_post_work(struct scsi_qla_host *ha,
5174                              struct qla4_work_evt *e)
5175 {
5176         unsigned long flags;
5177
5178         spin_lock_irqsave(&ha->work_lock, flags);
5179         list_add_tail(&e->list, &ha->work_list);
5180         spin_unlock_irqrestore(&ha->work_lock, flags);
5181         qla4xxx_wake_dpc(ha);
5182 }
5183
5184 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
5185                           enum iscsi_host_event_code aen_code,
5186                           uint32_t data_size, uint8_t *data)
5187 {
5188         struct qla4_work_evt *e;
5189
5190         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
5191         if (!e)
5192                 return QLA_ERROR;
5193
5194         e->u.aen.code = aen_code;
5195         e->u.aen.data_size = data_size;
5196         memcpy(e->u.aen.data, data, data_size);
5197
5198         qla4xxx_post_work(ha, e);
5199
5200         return QLA_SUCCESS;
5201 }
5202
5203 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
5204                                uint32_t status, uint32_t pid,
5205                                uint32_t data_size, uint8_t *data)
5206 {
5207         struct qla4_work_evt *e;
5208
5209         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
5210         if (!e)
5211                 return QLA_ERROR;
5212
5213         e->u.ping.status = status;
5214         e->u.ping.pid = pid;
5215         e->u.ping.data_size = data_size;
5216         memcpy(e->u.ping.data, data, data_size);
5217
5218         qla4xxx_post_work(ha, e);
5219
5220         return QLA_SUCCESS;
5221 }
5222
5223 static void qla4xxx_do_work(struct scsi_qla_host *ha)
5224 {
5225         struct qla4_work_evt *e, *tmp;
5226         unsigned long flags;
5227         LIST_HEAD(work);
5228
5229         spin_lock_irqsave(&ha->work_lock, flags);
5230         list_splice_init(&ha->work_list, &work);
5231         spin_unlock_irqrestore(&ha->work_lock, flags);
5232
5233         list_for_each_entry_safe(e, tmp, &work, list) {
5234                 list_del_init(&e->list);
5235
5236                 switch (e->type) {
5237                 case QLA4_EVENT_AEN:
5238                         iscsi_post_host_event(ha->host_no,
5239                                               &qla4xxx_iscsi_transport,
5240                                               e->u.aen.code,
5241                                               e->u.aen.data_size,
5242                                               e->u.aen.data);
5243                         break;
5244                 case QLA4_EVENT_PING_STATUS:
5245                         iscsi_ping_comp_event(ha->host_no,
5246                                               &qla4xxx_iscsi_transport,
5247                                               e->u.ping.status,
5248                                               e->u.ping.pid,
5249                                               e->u.ping.data_size,
5250                                               e->u.ping.data);
5251                         break;
5252                 default:
5253                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
5254                                    "supported", e->type);
5255                 }
5256                 kfree(e);
5257         }
5258 }
5259
5260 /**
5261  * qla4xxx_do_dpc - dpc routine
5262  * @data: in our case pointer to adapter structure
5263  *
5264  * This routine is a task that is schedule by the interrupt handler
5265  * to perform the background processing for interrupts.  We put it
5266  * on a task queue that is consumed whenever the scheduler runs; that's
5267  * so you can do anything (i.e. put the process to sleep etc).  In fact,
5268  * the mid-level tries to sleep when it reaches the driver threshold
5269  * "host->can_queue". This can cause a panic if we were in our interrupt code.
5270  **/
5271 static void qla4xxx_do_dpc(struct work_struct *work)
5272 {
5273         struct scsi_qla_host *ha =
5274                 container_of(work, struct scsi_qla_host, dpc_work);
5275         int status = QLA_ERROR;
5276
5277         DEBUG2(ql4_printk(KERN_INFO, ha,
5278                           "scsi%ld: %s: DPC handler waking up. flags = 0x%08lx, dpc_flags = 0x%08lx\n",
5279                           ha->host_no, __func__, ha->flags, ha->dpc_flags));
5280
5281         /* Initialization not yet finished. Don't do anything yet. */
5282         if (!test_bit(AF_INIT_DONE, &ha->flags))
5283                 return;
5284
5285         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
5286                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
5287                     ha->host_no, __func__, ha->flags));
5288                 return;
5289         }
5290
5291         /* post events to application */
5292         qla4xxx_do_work(ha);
5293
5294         if (is_qla80XX(ha)) {
5295                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
5296                         if (is_qla8032(ha) || is_qla8042(ha)) {
5297                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
5298                                            __func__);
5299                                 /* disable pause frame for ISP83xx */
5300                                 qla4_83xx_disable_pause(ha);
5301                         }
5302
5303                         ha->isp_ops->idc_lock(ha);
5304                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5305                                             QLA8XXX_DEV_FAILED);
5306                         ha->isp_ops->idc_unlock(ha);
5307                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
5308                         qla4_8xxx_device_state_handler(ha);
5309                 }
5310
5311                 if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
5312                         if (is_qla8042(ha)) {
5313                                 if (ha->idc_info.info2 &
5314                                     ENABLE_INTERNAL_LOOPBACK) {
5315                                         ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
5316                                                    __func__);
5317                                         status = qla4_84xx_config_acb(ha,
5318                                                             ACB_CONFIG_DISABLE);
5319                                         if (status != QLA_SUCCESS) {
5320                                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
5321                                                            __func__);
5322                                         }
5323                                 }
5324                         }
5325                         qla4_83xx_post_idc_ack(ha);
5326                         clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
5327                 }
5328
5329                 if (is_qla8042(ha) &&
5330                     test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
5331                         ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
5332                                    __func__);
5333                         if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
5334                             QLA_SUCCESS) {
5335                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
5336                                            __func__);
5337                         }
5338                         clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
5339                 }
5340
5341                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
5342                         qla4_8xxx_need_qsnt_handler(ha);
5343                 }
5344         }
5345
5346         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
5347             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
5348             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
5349             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
5350                 if ((is_qla8022(ha) && ql4xdontresethba) ||
5351                     ((is_qla8032(ha) || is_qla8042(ha)) &&
5352                      qla4_83xx_idc_dontreset(ha))) {
5353                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5354                             ha->host_no, __func__));
5355                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5356                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5357                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5358                         goto dpc_post_reset_ha;
5359                 }
5360                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
5361                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
5362                         qla4xxx_recover_adapter(ha);
5363
5364                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
5365                         uint8_t wait_time = RESET_INTR_TOV;
5366
5367                         while ((readw(&ha->reg->ctrl_status) &
5368                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
5369                                 if (--wait_time == 0)
5370                                         break;
5371                                 msleep(1000);
5372                         }
5373                         if (wait_time == 0)
5374                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
5375                                               "bit not cleared-- resetting\n",
5376                                               ha->host_no, __func__));
5377                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5378                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
5379                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5380                                 status = qla4xxx_recover_adapter(ha);
5381                         }
5382                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5383                         if (status == QLA_SUCCESS)
5384                                 ha->isp_ops->enable_intrs(ha);
5385                 }
5386         }
5387
5388 dpc_post_reset_ha:
5389         /* ---- process AEN? --- */
5390         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
5391                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
5392
5393         /* ---- Get DHCP IP Address? --- */
5394         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
5395                 qla4xxx_get_dhcp_ip_address(ha);
5396
5397         /* ---- relogin device? --- */
5398         if (adapter_up(ha) &&
5399             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
5400                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
5401         }
5402
5403         /* ---- link change? --- */
5404         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
5405             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
5406                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
5407                         /* ---- link down? --- */
5408                         qla4xxx_mark_all_devices_missing(ha);
5409                 } else {
5410                         /* ---- link up? --- *
5411                          * F/W will auto login to all devices ONLY ONCE after
5412                          * link up during driver initialization and runtime
5413                          * fatal error recovery.  Therefore, the driver must
5414                          * manually relogin to devices when recovering from
5415                          * connection failures, logouts, expired KATO, etc. */
5416                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
5417                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
5418                                 iscsi_host_for_each_session(ha->host,
5419                                                 qla4xxx_login_flash_ddb);
5420                         } else
5421                                 qla4xxx_relogin_all_devices(ha);
5422                 }
5423         }
5424         if (test_and_clear_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags)) {
5425                 if (qla4xxx_sysfs_ddb_export(ha))
5426                         ql4_printk(KERN_ERR, ha, "%s: Error exporting ddb to sysfs\n",
5427                                    __func__);
5428         }
5429 }
5430
5431 /**
5432  * qla4xxx_free_adapter - release the adapter
5433  * @ha: pointer to adapter structure
5434  **/
5435 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
5436 {
5437         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5438
5439         /* Turn-off interrupts on the card. */
5440         ha->isp_ops->disable_intrs(ha);
5441
5442         if (is_qla40XX(ha)) {
5443                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
5444                        &ha->reg->ctrl_status);
5445                 readl(&ha->reg->ctrl_status);
5446         } else if (is_qla8022(ha)) {
5447                 writel(0, &ha->qla4_82xx_reg->host_int);
5448                 readl(&ha->qla4_82xx_reg->host_int);
5449         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5450                 writel(0, &ha->qla4_83xx_reg->risc_intr);
5451                 readl(&ha->qla4_83xx_reg->risc_intr);
5452         }
5453
5454         /* Remove timer thread, if present */
5455         if (ha->timer_active)
5456                 qla4xxx_stop_timer(ha);
5457
5458         /* Kill the kernel thread for this host */
5459         if (ha->dpc_thread)
5460                 destroy_workqueue(ha->dpc_thread);
5461
5462         /* Kill the kernel thread for this host */
5463         if (ha->task_wq)
5464                 destroy_workqueue(ha->task_wq);
5465
5466         /* Put firmware in known state */
5467         ha->isp_ops->reset_firmware(ha);
5468
5469         if (is_qla80XX(ha)) {
5470                 ha->isp_ops->idc_lock(ha);
5471                 qla4_8xxx_clear_drv_active(ha);
5472                 ha->isp_ops->idc_unlock(ha);
5473         }
5474
5475         /* Detach interrupts */
5476         qla4xxx_free_irqs(ha);
5477
5478         /* free extra memory */
5479         qla4xxx_mem_free(ha);
5480 }
5481
5482 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
5483 {
5484         int status = 0;
5485         unsigned long mem_base, mem_len, db_base, db_len;
5486         struct pci_dev *pdev = ha->pdev;
5487
5488         status = pci_request_regions(pdev, DRIVER_NAME);
5489         if (status) {
5490                 printk(KERN_WARNING
5491                     "scsi(%ld) Failed to reserve PIO regions (%s) "
5492                     "status=%d\n", ha->host_no, pci_name(pdev), status);
5493                 goto iospace_error_exit;
5494         }
5495
5496         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
5497             __func__, pdev->revision));
5498         ha->revision_id = pdev->revision;
5499
5500         /* remap phys address */
5501         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
5502         mem_len = pci_resource_len(pdev, 0);
5503         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
5504             __func__, mem_base, mem_len));
5505
5506         /* mapping of pcibase pointer */
5507         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
5508         if (!ha->nx_pcibase) {
5509                 printk(KERN_ERR
5510                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
5511                 pci_release_regions(ha->pdev);
5512                 goto iospace_error_exit;
5513         }
5514
5515         /* Mapping of IO base pointer, door bell read and write pointer */
5516
5517         /* mapping of IO base pointer */
5518         if (is_qla8022(ha)) {
5519                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
5520                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
5521                                      (ha->pdev->devfn << 11));
5522                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
5523                                     QLA82XX_CAM_RAM_DB2);
5524         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5525                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
5526                                     ((uint8_t *)ha->nx_pcibase);
5527         }
5528
5529         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
5530         db_len = pci_resource_len(pdev, 4);
5531
5532         return 0;
5533 iospace_error_exit:
5534         return -ENOMEM;
5535 }
5536
5537 /***
5538  * qla4xxx_iospace_config - maps registers
5539  * @ha: pointer to adapter structure
5540  *
5541  * This routines maps HBA's registers from the pci address space
5542  * into the kernel virtual address space for memory mapped i/o.
5543  **/
5544 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
5545 {
5546         unsigned long pio, pio_len, pio_flags;
5547         unsigned long mmio, mmio_len, mmio_flags;
5548
5549         pio = pci_resource_start(ha->pdev, 0);
5550         pio_len = pci_resource_len(ha->pdev, 0);
5551         pio_flags = pci_resource_flags(ha->pdev, 0);
5552         if (pio_flags & IORESOURCE_IO) {
5553                 if (pio_len < MIN_IOBASE_LEN) {
5554                         ql4_printk(KERN_WARNING, ha,
5555                                 "Invalid PCI I/O region size\n");
5556                         pio = 0;
5557                 }
5558         } else {
5559                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
5560                 pio = 0;
5561         }
5562
5563         /* Use MMIO operations for all accesses. */
5564         mmio = pci_resource_start(ha->pdev, 1);
5565         mmio_len = pci_resource_len(ha->pdev, 1);
5566         mmio_flags = pci_resource_flags(ha->pdev, 1);
5567
5568         if (!(mmio_flags & IORESOURCE_MEM)) {
5569                 ql4_printk(KERN_ERR, ha,
5570                     "region #0 not an MMIO resource, aborting\n");
5571
5572                 goto iospace_error_exit;
5573         }
5574
5575         if (mmio_len < MIN_IOBASE_LEN) {
5576                 ql4_printk(KERN_ERR, ha,
5577                     "Invalid PCI mem region size, aborting\n");
5578                 goto iospace_error_exit;
5579         }
5580
5581         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
5582                 ql4_printk(KERN_WARNING, ha,
5583                     "Failed to reserve PIO/MMIO regions\n");
5584
5585                 goto iospace_error_exit;
5586         }
5587
5588         ha->pio_address = pio;
5589         ha->pio_length = pio_len;
5590         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
5591         if (!ha->reg) {
5592                 ql4_printk(KERN_ERR, ha,
5593                     "cannot remap MMIO, aborting\n");
5594
5595                 goto iospace_error_exit;
5596         }
5597
5598         return 0;
5599
5600 iospace_error_exit:
5601         return -ENOMEM;
5602 }
5603
5604 static struct isp_operations qla4xxx_isp_ops = {
5605         .iospace_config         = qla4xxx_iospace_config,
5606         .pci_config             = qla4xxx_pci_config,
5607         .disable_intrs          = qla4xxx_disable_intrs,
5608         .enable_intrs           = qla4xxx_enable_intrs,
5609         .start_firmware         = qla4xxx_start_firmware,
5610         .intr_handler           = qla4xxx_intr_handler,
5611         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
5612         .reset_chip             = qla4xxx_soft_reset,
5613         .reset_firmware         = qla4xxx_hw_reset,
5614         .queue_iocb             = qla4xxx_queue_iocb,
5615         .complete_iocb          = qla4xxx_complete_iocb,
5616         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5617         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5618         .get_sys_info           = qla4xxx_get_sys_info,
5619         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
5620         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
5621 };
5622
5623 static struct isp_operations qla4_82xx_isp_ops = {
5624         .iospace_config         = qla4_8xxx_iospace_config,
5625         .pci_config             = qla4_8xxx_pci_config,
5626         .disable_intrs          = qla4_82xx_disable_intrs,
5627         .enable_intrs           = qla4_82xx_enable_intrs,
5628         .start_firmware         = qla4_8xxx_load_risc,
5629         .restart_firmware       = qla4_82xx_try_start_fw,
5630         .intr_handler           = qla4_82xx_intr_handler,
5631         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
5632         .need_reset             = qla4_8xxx_need_reset,
5633         .reset_chip             = qla4_82xx_isp_reset,
5634         .reset_firmware         = qla4_8xxx_stop_firmware,
5635         .queue_iocb             = qla4_82xx_queue_iocb,
5636         .complete_iocb          = qla4_82xx_complete_iocb,
5637         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
5638         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
5639         .get_sys_info           = qla4_8xxx_get_sys_info,
5640         .rd_reg_direct          = qla4_82xx_rd_32,
5641         .wr_reg_direct          = qla4_82xx_wr_32,
5642         .rd_reg_indirect        = qla4_82xx_md_rd_32,
5643         .wr_reg_indirect        = qla4_82xx_md_wr_32,
5644         .idc_lock               = qla4_82xx_idc_lock,
5645         .idc_unlock             = qla4_82xx_idc_unlock,
5646         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
5647         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
5648         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
5649 };
5650
5651 static struct isp_operations qla4_83xx_isp_ops = {
5652         .iospace_config         = qla4_8xxx_iospace_config,
5653         .pci_config             = qla4_8xxx_pci_config,
5654         .disable_intrs          = qla4_83xx_disable_intrs,
5655         .enable_intrs           = qla4_83xx_enable_intrs,
5656         .start_firmware         = qla4_8xxx_load_risc,
5657         .restart_firmware       = qla4_83xx_start_firmware,
5658         .intr_handler           = qla4_83xx_intr_handler,
5659         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
5660         .need_reset             = qla4_8xxx_need_reset,
5661         .reset_chip             = qla4_83xx_isp_reset,
5662         .reset_firmware         = qla4_8xxx_stop_firmware,
5663         .queue_iocb             = qla4_83xx_queue_iocb,
5664         .complete_iocb          = qla4_83xx_complete_iocb,
5665         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5666         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5667         .get_sys_info           = qla4_8xxx_get_sys_info,
5668         .rd_reg_direct          = qla4_83xx_rd_reg,
5669         .wr_reg_direct          = qla4_83xx_wr_reg,
5670         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
5671         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
5672         .idc_lock               = qla4_83xx_drv_lock,
5673         .idc_unlock             = qla4_83xx_drv_unlock,
5674         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
5675         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
5676         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
5677 };
5678
5679 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5680 {
5681         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
5682 }
5683
5684 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5685 {
5686         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
5687 }
5688
5689 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5690 {
5691         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
5692 }
5693
5694 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5695 {
5696         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
5697 }
5698
5699 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
5700 {
5701         struct scsi_qla_host *ha = data;
5702         char *str = buf;
5703         int rc;
5704
5705         switch (type) {
5706         case ISCSI_BOOT_ETH_FLAGS:
5707                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5708                 break;
5709         case ISCSI_BOOT_ETH_INDEX:
5710                 rc = sprintf(str, "0\n");
5711                 break;
5712         case ISCSI_BOOT_ETH_MAC:
5713                 rc = sysfs_format_mac(str, ha->my_mac,
5714                                       MAC_ADDR_LEN);
5715                 break;
5716         default:
5717                 rc = -ENOSYS;
5718                 break;
5719         }
5720         return rc;
5721 }
5722
5723 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
5724 {
5725         int rc;
5726
5727         switch (type) {
5728         case ISCSI_BOOT_ETH_FLAGS:
5729         case ISCSI_BOOT_ETH_MAC:
5730         case ISCSI_BOOT_ETH_INDEX:
5731                 rc = S_IRUGO;
5732                 break;
5733         default:
5734                 rc = 0;
5735                 break;
5736         }
5737         return rc;
5738 }
5739
5740 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
5741 {
5742         struct scsi_qla_host *ha = data;
5743         char *str = buf;
5744         int rc;
5745
5746         switch (type) {
5747         case ISCSI_BOOT_INI_INITIATOR_NAME:
5748                 rc = sprintf(str, "%s\n", ha->name_string);
5749                 break;
5750         default:
5751                 rc = -ENOSYS;
5752                 break;
5753         }
5754         return rc;
5755 }
5756
5757 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
5758 {
5759         int rc;
5760
5761         switch (type) {
5762         case ISCSI_BOOT_INI_INITIATOR_NAME:
5763                 rc = S_IRUGO;
5764                 break;
5765         default:
5766                 rc = 0;
5767                 break;
5768         }
5769         return rc;
5770 }
5771
5772 static ssize_t
5773 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
5774                            char *buf)
5775 {
5776         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
5777         char *str = buf;
5778         int rc;
5779
5780         switch (type) {
5781         case ISCSI_BOOT_TGT_NAME:
5782                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
5783                 break;
5784         case ISCSI_BOOT_TGT_IP_ADDR:
5785                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
5786                         rc = sprintf(buf, "%pI4\n",
5787                                      &boot_conn->dest_ipaddr.ip_address);
5788                 else
5789                         rc = sprintf(str, "%pI6\n",
5790                                      &boot_conn->dest_ipaddr.ip_address);
5791                 break;
5792         case ISCSI_BOOT_TGT_PORT:
5793                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
5794                 break;
5795         case ISCSI_BOOT_TGT_CHAP_NAME:
5796                 rc = sprintf(str,  "%.*s\n",
5797                              boot_conn->chap.target_chap_name_length,
5798                              (char *)&boot_conn->chap.target_chap_name);
5799                 break;
5800         case ISCSI_BOOT_TGT_CHAP_SECRET:
5801                 rc = sprintf(str,  "%.*s\n",
5802                              boot_conn->chap.target_secret_length,
5803                              (char *)&boot_conn->chap.target_secret);
5804                 break;
5805         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5806                 rc = sprintf(str,  "%.*s\n",
5807                              boot_conn->chap.intr_chap_name_length,
5808                              (char *)&boot_conn->chap.intr_chap_name);
5809                 break;
5810         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5811                 rc = sprintf(str,  "%.*s\n",
5812                              boot_conn->chap.intr_secret_length,
5813                              (char *)&boot_conn->chap.intr_secret);
5814                 break;
5815         case ISCSI_BOOT_TGT_FLAGS:
5816                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5817                 break;
5818         case ISCSI_BOOT_TGT_NIC_ASSOC:
5819                 rc = sprintf(str, "0\n");
5820                 break;
5821         default:
5822                 rc = -ENOSYS;
5823                 break;
5824         }
5825         return rc;
5826 }
5827
5828 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
5829 {
5830         struct scsi_qla_host *ha = data;
5831         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
5832
5833         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5834 }
5835
5836 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
5837 {
5838         struct scsi_qla_host *ha = data;
5839         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
5840
5841         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5842 }
5843
5844 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
5845 {
5846         int rc;
5847
5848         switch (type) {
5849         case ISCSI_BOOT_TGT_NAME:
5850         case ISCSI_BOOT_TGT_IP_ADDR:
5851         case ISCSI_BOOT_TGT_PORT:
5852         case ISCSI_BOOT_TGT_CHAP_NAME:
5853         case ISCSI_BOOT_TGT_CHAP_SECRET:
5854         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5855         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5856         case ISCSI_BOOT_TGT_NIC_ASSOC:
5857         case ISCSI_BOOT_TGT_FLAGS:
5858                 rc = S_IRUGO;
5859                 break;
5860         default:
5861                 rc = 0;
5862                 break;
5863         }
5864         return rc;
5865 }
5866
5867 static void qla4xxx_boot_release(void *data)
5868 {
5869         struct scsi_qla_host *ha = data;
5870
5871         scsi_host_put(ha->host);
5872 }
5873
5874 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
5875 {
5876         dma_addr_t buf_dma;
5877         uint32_t addr, pri_addr, sec_addr;
5878         uint32_t offset;
5879         uint16_t func_num;
5880         uint8_t val;
5881         uint8_t *buf = NULL;
5882         size_t size = 13 * sizeof(uint8_t);
5883         int ret = QLA_SUCCESS;
5884
5885         func_num = PCI_FUNC(ha->pdev->devfn);
5886
5887         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
5888                    __func__, ha->pdev->device, func_num);
5889
5890         if (is_qla40XX(ha)) {
5891                 if (func_num == 1) {
5892                         addr = NVRAM_PORT0_BOOT_MODE;
5893                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
5894                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
5895                 } else if (func_num == 3) {
5896                         addr = NVRAM_PORT1_BOOT_MODE;
5897                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
5898                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
5899                 } else {
5900                         ret = QLA_ERROR;
5901                         goto exit_boot_info;
5902                 }
5903
5904                 /* Check Boot Mode */
5905                 val = rd_nvram_byte(ha, addr);
5906                 if (!(val & 0x07)) {
5907                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
5908                                           "options : 0x%x\n", __func__, val));
5909                         ret = QLA_ERROR;
5910                         goto exit_boot_info;
5911                 }
5912
5913                 /* get primary valid target index */
5914                 val = rd_nvram_byte(ha, pri_addr);
5915                 if (val & BIT_7)
5916                         ddb_index[0] = (val & 0x7f);
5917
5918                 /* get secondary valid target index */
5919                 val = rd_nvram_byte(ha, sec_addr);
5920                 if (val & BIT_7)
5921                         ddb_index[1] = (val & 0x7f);
5922
5923         } else if (is_qla80XX(ha)) {
5924                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
5925                                          &buf_dma, GFP_KERNEL);
5926                 if (!buf) {
5927                         DEBUG2(ql4_printk(KERN_ERR, ha,
5928                                           "%s: Unable to allocate dma buffer\n",
5929                                            __func__));
5930                         ret = QLA_ERROR;
5931                         goto exit_boot_info;
5932                 }
5933
5934                 if (ha->port_num == 0)
5935                         offset = BOOT_PARAM_OFFSET_PORT0;
5936                 else if (ha->port_num == 1)
5937                         offset = BOOT_PARAM_OFFSET_PORT1;
5938                 else {
5939                         ret = QLA_ERROR;
5940                         goto exit_boot_info_free;
5941                 }
5942                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
5943                        offset;
5944                 if (qla4xxx_get_flash(ha, buf_dma, addr,
5945                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
5946                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
5947                                           " failed\n", ha->host_no, __func__));
5948                         ret = QLA_ERROR;
5949                         goto exit_boot_info_free;
5950                 }
5951                 /* Check Boot Mode */
5952                 if (!(buf[1] & 0x07)) {
5953                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
5954                                           " : 0x%x\n", buf[1]));
5955                         ret = QLA_ERROR;
5956                         goto exit_boot_info_free;
5957                 }
5958
5959                 /* get primary valid target index */
5960                 if (buf[2] & BIT_7)
5961                         ddb_index[0] = buf[2] & 0x7f;
5962
5963                 /* get secondary valid target index */
5964                 if (buf[11] & BIT_7)
5965                         ddb_index[1] = buf[11] & 0x7f;
5966         } else {
5967                 ret = QLA_ERROR;
5968                 goto exit_boot_info;
5969         }
5970
5971         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
5972                           " target ID %d\n", __func__, ddb_index[0],
5973                           ddb_index[1]));
5974
5975 exit_boot_info_free:
5976         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
5977 exit_boot_info:
5978         ha->pri_ddb_idx = ddb_index[0];
5979         ha->sec_ddb_idx = ddb_index[1];
5980         return ret;
5981 }
5982
5983 /**
5984  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
5985  * @ha: pointer to adapter structure
5986  * @username: CHAP username to be returned
5987  * @password: CHAP password to be returned
5988  *
5989  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
5990  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
5991  * So from the CHAP cache find the first BIDI CHAP entry and set it
5992  * to the boot record in sysfs.
5993  **/
5994 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
5995                             char *password)
5996 {
5997         int i, ret = -EINVAL;
5998         int max_chap_entries = 0;
5999         struct ql4_chap_table *chap_table;
6000
6001         if (is_qla80XX(ha))
6002                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
6003                                                 sizeof(struct ql4_chap_table);
6004         else
6005                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
6006
6007         if (!ha->chap_list) {
6008                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
6009                 return ret;
6010         }
6011
6012         mutex_lock(&ha->chap_sem);
6013         for (i = 0; i < max_chap_entries; i++) {
6014                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
6015                 if (chap_table->cookie !=
6016                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
6017                         continue;
6018                 }
6019
6020                 if (chap_table->flags & BIT_7) /* local */
6021                         continue;
6022
6023                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
6024                         continue;
6025
6026                 strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
6027                 strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
6028                 ret = 0;
6029                 break;
6030         }
6031         mutex_unlock(&ha->chap_sem);
6032
6033         return ret;
6034 }
6035
6036
6037 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
6038                                    struct ql4_boot_session_info *boot_sess,
6039                                    uint16_t ddb_index)
6040 {
6041         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
6042         struct dev_db_entry *fw_ddb_entry;
6043         dma_addr_t fw_ddb_entry_dma;
6044         uint16_t idx;
6045         uint16_t options;
6046         int ret = QLA_SUCCESS;
6047
6048         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6049                                           &fw_ddb_entry_dma, GFP_KERNEL);
6050         if (!fw_ddb_entry) {
6051                 DEBUG2(ql4_printk(KERN_ERR, ha,
6052                                   "%s: Unable to allocate dma buffer.\n",
6053                                   __func__));
6054                 ret = QLA_ERROR;
6055                 return ret;
6056         }
6057
6058         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
6059                                    fw_ddb_entry_dma, ddb_index)) {
6060                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
6061                                   "index [%d]\n", __func__, ddb_index));
6062                 ret = QLA_ERROR;
6063                 goto exit_boot_target;
6064         }
6065
6066         /* Update target name and IP from DDB */
6067         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
6068                min(sizeof(boot_sess->target_name),
6069                    sizeof(fw_ddb_entry->iscsi_name)));
6070
6071         options = le16_to_cpu(fw_ddb_entry->options);
6072         if (options & DDB_OPT_IPV6_DEVICE) {
6073                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6074                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
6075         } else {
6076                 boot_conn->dest_ipaddr.ip_type = 0x1;
6077                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6078                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
6079         }
6080
6081         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
6082
6083         /* update chap information */
6084         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
6085
6086         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
6087
6088                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
6089
6090                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
6091                                        target_chap_name,
6092                                        (char *)&boot_conn->chap.target_secret,
6093                                        idx);
6094                 if (ret) {
6095                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
6096                         ret = QLA_ERROR;
6097                         goto exit_boot_target;
6098                 }
6099
6100                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6101                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6102         }
6103
6104         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
6105
6106                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
6107
6108                 ret = qla4xxx_get_bidi_chap(ha,
6109                                     (char *)&boot_conn->chap.intr_chap_name,
6110                                     (char *)&boot_conn->chap.intr_secret);
6111
6112                 if (ret) {
6113                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
6114                         ret = QLA_ERROR;
6115                         goto exit_boot_target;
6116                 }
6117
6118                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6119                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6120         }
6121
6122 exit_boot_target:
6123         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6124                           fw_ddb_entry, fw_ddb_entry_dma);
6125         return ret;
6126 }
6127
6128 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
6129 {
6130         uint16_t ddb_index[2];
6131         int ret = QLA_ERROR;
6132         int rval;
6133
6134         memset(ddb_index, 0, sizeof(ddb_index));
6135         ddb_index[0] = 0xffff;
6136         ddb_index[1] = 0xffff;
6137         ret = get_fw_boot_info(ha, ddb_index);
6138         if (ret != QLA_SUCCESS) {
6139                 DEBUG2(ql4_printk(KERN_INFO, ha,
6140                                 "%s: No boot target configured.\n", __func__));
6141                 return ret;
6142         }
6143
6144         if (ql4xdisablesysfsboot)
6145                 return QLA_SUCCESS;
6146
6147         if (ddb_index[0] == 0xffff)
6148                 goto sec_target;
6149
6150         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
6151                                       ddb_index[0]);
6152         if (rval != QLA_SUCCESS) {
6153                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
6154                                   "configured\n", __func__));
6155         } else
6156                 ret = QLA_SUCCESS;
6157
6158 sec_target:
6159         if (ddb_index[1] == 0xffff)
6160                 goto exit_get_boot_info;
6161
6162         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
6163                                       ddb_index[1]);
6164         if (rval != QLA_SUCCESS) {
6165                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
6166                                   " configured\n", __func__));
6167         } else
6168                 ret = QLA_SUCCESS;
6169
6170 exit_get_boot_info:
6171         return ret;
6172 }
6173
6174 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
6175 {
6176         struct iscsi_boot_kobj *boot_kobj;
6177
6178         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
6179                 return QLA_ERROR;
6180
6181         if (ql4xdisablesysfsboot) {
6182                 ql4_printk(KERN_INFO, ha,
6183                            "%s: syfsboot disabled - driver will trigger login "
6184                            "and publish session for discovery .\n", __func__);
6185                 return QLA_SUCCESS;
6186         }
6187
6188
6189         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
6190         if (!ha->boot_kset)
6191                 goto kset_free;
6192
6193         if (!scsi_host_get(ha->host))
6194                 goto kset_free;
6195         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
6196                                              qla4xxx_show_boot_tgt_pri_info,
6197                                              qla4xxx_tgt_get_attr_visibility,
6198                                              qla4xxx_boot_release);
6199         if (!boot_kobj)
6200                 goto put_host;
6201
6202         if (!scsi_host_get(ha->host))
6203                 goto kset_free;
6204         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
6205                                              qla4xxx_show_boot_tgt_sec_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_initiator(ha->boot_kset, 0, ha,
6214                                                qla4xxx_show_boot_ini_info,
6215                                                qla4xxx_ini_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_ethernet(ha->boot_kset, 0, ha,
6223                                                qla4xxx_show_boot_eth_info,
6224                                                qla4xxx_eth_get_attr_visibility,
6225                                                qla4xxx_boot_release);
6226         if (!boot_kobj)
6227                 goto put_host;
6228
6229         return QLA_SUCCESS;
6230
6231 put_host:
6232         scsi_host_put(ha->host);
6233 kset_free:
6234         iscsi_boot_destroy_kset(ha->boot_kset);
6235         return -ENOMEM;
6236 }
6237
6238
6239 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
6240                                   struct ql4_tuple_ddb *tddb)
6241 {
6242         struct scsi_qla_host *ha;
6243         struct iscsi_cls_session *cls_sess;
6244         struct iscsi_cls_conn *cls_conn;
6245         struct iscsi_session *sess;
6246         struct iscsi_conn *conn;
6247
6248         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
6249         ha = ddb_entry->ha;
6250         cls_sess = ddb_entry->sess;
6251         sess = cls_sess->dd_data;
6252         cls_conn = ddb_entry->conn;
6253         conn = cls_conn->dd_data;
6254
6255         tddb->tpgt = sess->tpgt;
6256         tddb->port = conn->persistent_port;
6257         strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
6258         strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
6259 }
6260
6261 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
6262                                       struct ql4_tuple_ddb *tddb,
6263                                       uint8_t *flash_isid)
6264 {
6265         uint16_t options = 0;
6266
6267         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
6268         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
6269                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
6270
6271         options = le16_to_cpu(fw_ddb_entry->options);
6272         if (options & DDB_OPT_IPV6_DEVICE)
6273                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
6274         else
6275                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
6276
6277         tddb->port = le16_to_cpu(fw_ddb_entry->port);
6278
6279         if (flash_isid == NULL)
6280                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
6281                        sizeof(tddb->isid));
6282         else
6283                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
6284 }
6285
6286 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
6287                                      struct ql4_tuple_ddb *old_tddb,
6288                                      struct ql4_tuple_ddb *new_tddb,
6289                                      uint8_t is_isid_compare)
6290 {
6291         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6292                 return QLA_ERROR;
6293
6294         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
6295                 return QLA_ERROR;
6296
6297         if (old_tddb->port != new_tddb->port)
6298                 return QLA_ERROR;
6299
6300         /* For multi sessions, driver generates the ISID, so do not compare
6301          * ISID in reset path since it would be a comparison between the
6302          * driver generated ISID and firmware generated ISID. This could
6303          * lead to adding duplicated DDBs in the list as driver generated
6304          * ISID would not match firmware generated ISID.
6305          */
6306         if (is_isid_compare) {
6307                 DEBUG2(ql4_printk(KERN_INFO, ha,
6308                         "%s: old ISID [%pmR] New ISID [%pmR]\n",
6309                         __func__, old_tddb->isid, new_tddb->isid));
6310
6311                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6312                            sizeof(old_tddb->isid)))
6313                         return QLA_ERROR;
6314         }
6315
6316         DEBUG2(ql4_printk(KERN_INFO, ha,
6317                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
6318                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
6319                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
6320                           new_tddb->ip_addr, new_tddb->iscsi_name));
6321
6322         return QLA_SUCCESS;
6323 }
6324
6325 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
6326                                      struct dev_db_entry *fw_ddb_entry,
6327                                      uint32_t *index)
6328 {
6329         struct ddb_entry *ddb_entry;
6330         struct ql4_tuple_ddb *fw_tddb = NULL;
6331         struct ql4_tuple_ddb *tmp_tddb = NULL;
6332         int idx;
6333         int ret = QLA_ERROR;
6334
6335         fw_tddb = vzalloc(sizeof(*fw_tddb));
6336         if (!fw_tddb) {
6337                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6338                                   "Memory Allocation failed.\n"));
6339                 ret = QLA_SUCCESS;
6340                 goto exit_check;
6341         }
6342
6343         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6344         if (!tmp_tddb) {
6345                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6346                                   "Memory Allocation failed.\n"));
6347                 ret = QLA_SUCCESS;
6348                 goto exit_check;
6349         }
6350
6351         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6352
6353         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6354                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6355                 if (ddb_entry == NULL)
6356                         continue;
6357
6358                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
6359                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
6360                         ret = QLA_SUCCESS; /* found */
6361                         if (index != NULL)
6362                                 *index = idx;
6363                         goto exit_check;
6364                 }
6365         }
6366
6367 exit_check:
6368         if (fw_tddb)
6369                 vfree(fw_tddb);
6370         if (tmp_tddb)
6371                 vfree(tmp_tddb);
6372         return ret;
6373 }
6374
6375 /**
6376  * qla4xxx_check_existing_isid - check if target with same isid exist
6377  *                               in target list
6378  * @list_nt: list of target
6379  * @isid: isid to check
6380  *
6381  * This routine return QLA_SUCCESS if target with same isid exist
6382  **/
6383 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
6384 {
6385         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
6386         struct dev_db_entry *fw_ddb_entry;
6387
6388         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6389                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
6390
6391                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
6392                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
6393                         return QLA_SUCCESS;
6394                 }
6395         }
6396         return QLA_ERROR;
6397 }
6398
6399 /**
6400  * qla4xxx_update_isid - compare ddbs and updated isid
6401  * @ha: Pointer to host adapter structure.
6402  * @list_nt: list of nt target
6403  * @fw_ddb_entry: firmware ddb entry
6404  *
6405  * This routine update isid if ddbs have same iqn, same isid and
6406  * different IP addr.
6407  * Return QLA_SUCCESS if isid is updated.
6408  **/
6409 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
6410                                struct list_head *list_nt,
6411                                struct dev_db_entry *fw_ddb_entry)
6412 {
6413         uint8_t base_value, i;
6414
6415         base_value = fw_ddb_entry->isid[1] & 0x1f;
6416         for (i = 0; i < 8; i++) {
6417                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
6418                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6419                         break;
6420         }
6421
6422         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6423                 return QLA_ERROR;
6424
6425         return QLA_SUCCESS;
6426 }
6427
6428 /**
6429  * qla4xxx_should_update_isid - check if isid need to update
6430  * @ha: Pointer to host adapter structure.
6431  * @old_tddb: ddb tuple
6432  * @new_tddb: ddb tuple
6433  *
6434  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
6435  * same isid
6436  **/
6437 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
6438                                       struct ql4_tuple_ddb *old_tddb,
6439                                       struct ql4_tuple_ddb *new_tddb)
6440 {
6441         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
6442                 /* Same ip */
6443                 if (old_tddb->port == new_tddb->port)
6444                         return QLA_ERROR;
6445         }
6446
6447         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6448                 /* different iqn */
6449                 return QLA_ERROR;
6450
6451         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6452                    sizeof(old_tddb->isid)))
6453                 /* different isid */
6454                 return QLA_ERROR;
6455
6456         return QLA_SUCCESS;
6457 }
6458
6459 /**
6460  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
6461  * @ha: Pointer to host adapter structure.
6462  * @list_nt: list of nt target.
6463  * @fw_ddb_entry: firmware ddb entry.
6464  *
6465  * This routine check if fw_ddb_entry already exists in list_nt to avoid
6466  * duplicate ddb in list_nt.
6467  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
6468  * Note: This function also update isid of DDB if required.
6469  **/
6470
6471 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
6472                                        struct list_head *list_nt,
6473                                        struct dev_db_entry *fw_ddb_entry)
6474 {
6475         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
6476         struct ql4_tuple_ddb *fw_tddb = NULL;
6477         struct ql4_tuple_ddb *tmp_tddb = NULL;
6478         int rval, ret = QLA_ERROR;
6479
6480         fw_tddb = vzalloc(sizeof(*fw_tddb));
6481         if (!fw_tddb) {
6482                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6483                                   "Memory Allocation failed.\n"));
6484                 ret = QLA_SUCCESS;
6485                 goto exit_check;
6486         }
6487
6488         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6489         if (!tmp_tddb) {
6490                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6491                                   "Memory Allocation failed.\n"));
6492                 ret = QLA_SUCCESS;
6493                 goto exit_check;
6494         }
6495
6496         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6497
6498         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6499                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
6500                                           nt_ddb_idx->flash_isid);
6501                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
6502                 /* found duplicate ddb */
6503                 if (ret == QLA_SUCCESS)
6504                         goto exit_check;
6505         }
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, NULL);
6509
6510                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
6511                 if (ret == QLA_SUCCESS) {
6512                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
6513                         if (rval == QLA_SUCCESS)
6514                                 ret = QLA_ERROR;
6515                         else
6516                                 ret = QLA_SUCCESS;
6517
6518                         goto exit_check;
6519                 }
6520         }
6521
6522 exit_check:
6523         if (fw_tddb)
6524                 vfree(fw_tddb);
6525         if (tmp_tddb)
6526                 vfree(tmp_tddb);
6527         return ret;
6528 }
6529
6530 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
6531 {
6532         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6533
6534         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6535                 list_del_init(&ddb_idx->list);
6536                 vfree(ddb_idx);
6537         }
6538 }
6539
6540 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
6541                                         struct dev_db_entry *fw_ddb_entry)
6542 {
6543         struct iscsi_endpoint *ep;
6544         struct sockaddr_in *addr;
6545         struct sockaddr_in6 *addr6;
6546         struct sockaddr *t_addr;
6547         struct sockaddr_storage *dst_addr;
6548         char *ip;
6549
6550         /* TODO: need to destroy on unload iscsi_endpoint*/
6551         dst_addr = vmalloc(sizeof(*dst_addr));
6552         if (!dst_addr)
6553                 return NULL;
6554
6555         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
6556                 t_addr = (struct sockaddr *)dst_addr;
6557                 t_addr->sa_family = AF_INET6;
6558                 addr6 = (struct sockaddr_in6 *)dst_addr;
6559                 ip = (char *)&addr6->sin6_addr;
6560                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
6561                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
6562
6563         } else {
6564                 t_addr = (struct sockaddr *)dst_addr;
6565                 t_addr->sa_family = AF_INET;
6566                 addr = (struct sockaddr_in *)dst_addr;
6567                 ip = (char *)&addr->sin_addr;
6568                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
6569                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
6570         }
6571
6572         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
6573         vfree(dst_addr);
6574         return ep;
6575 }
6576
6577 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
6578 {
6579         if (ql4xdisablesysfsboot)
6580                 return QLA_SUCCESS;
6581         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
6582                 return QLA_ERROR;
6583         return QLA_SUCCESS;
6584 }
6585
6586 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
6587                                           struct ddb_entry *ddb_entry,
6588                                           uint16_t idx)
6589 {
6590         uint16_t def_timeout;
6591
6592         ddb_entry->ddb_type = FLASH_DDB;
6593         ddb_entry->fw_ddb_index = INVALID_ENTRY;
6594         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
6595         ddb_entry->ha = ha;
6596         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
6597         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
6598         ddb_entry->chap_tbl_idx = INVALID_ENTRY;
6599
6600         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6601         atomic_set(&ddb_entry->relogin_timer, 0);
6602         atomic_set(&ddb_entry->relogin_retry_count, 0);
6603         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
6604         ddb_entry->default_relogin_timeout =
6605                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
6606                 def_timeout : LOGIN_TOV;
6607         ddb_entry->default_time2wait =
6608                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
6609
6610         if (ql4xdisablesysfsboot &&
6611             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
6612                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
6613 }
6614
6615 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
6616 {
6617         uint32_t idx = 0;
6618         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
6619         uint32_t sts[MBOX_REG_COUNT];
6620         uint32_t ip_state;
6621         unsigned long wtime;
6622         int ret;
6623
6624         wtime = jiffies + (HZ * IP_CONFIG_TOV);
6625         do {
6626                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
6627                         if (ip_idx[idx] == -1)
6628                                 continue;
6629
6630                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
6631
6632                         if (ret == QLA_ERROR) {
6633                                 ip_idx[idx] = -1;
6634                                 continue;
6635                         }
6636
6637                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
6638
6639                         DEBUG2(ql4_printk(KERN_INFO, ha,
6640                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
6641                                           ip_idx[idx], ip_state));
6642                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
6643                             ip_state == IP_ADDRSTATE_INVALID ||
6644                             ip_state == IP_ADDRSTATE_PREFERRED ||
6645                             ip_state == IP_ADDRSTATE_DEPRICATED ||
6646                             ip_state == IP_ADDRSTATE_DISABLING)
6647                                 ip_idx[idx] = -1;
6648                 }
6649
6650                 /* Break if all IP states checked */
6651                 if ((ip_idx[0] == -1) &&
6652                     (ip_idx[1] == -1) &&
6653                     (ip_idx[2] == -1) &&
6654                     (ip_idx[3] == -1))
6655                         break;
6656                 schedule_timeout_uninterruptible(HZ);
6657         } while (time_after(wtime, jiffies));
6658 }
6659
6660 static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
6661                                   struct dev_db_entry *flash_ddb_entry)
6662 {
6663         uint16_t options = 0;
6664         size_t ip_len = IP_ADDR_LEN;
6665
6666         options = le16_to_cpu(fw_ddb_entry->options);
6667         if (options & DDB_OPT_IPV6_DEVICE)
6668                 ip_len = IPv6_ADDR_LEN;
6669
6670         if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
6671                 return QLA_ERROR;
6672
6673         if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
6674                    sizeof(fw_ddb_entry->isid)))
6675                 return QLA_ERROR;
6676
6677         if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
6678                    sizeof(fw_ddb_entry->port)))
6679                 return QLA_ERROR;
6680
6681         return QLA_SUCCESS;
6682 }
6683
6684 static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
6685                                      struct dev_db_entry *fw_ddb_entry,
6686                                      uint32_t fw_idx, uint32_t *flash_index)
6687 {
6688         struct dev_db_entry *flash_ddb_entry;
6689         dma_addr_t flash_ddb_entry_dma;
6690         uint32_t idx = 0;
6691         int max_ddbs;
6692         int ret = QLA_ERROR, status;
6693
6694         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6695                                      MAX_DEV_DB_ENTRIES;
6696
6697         flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6698                                          &flash_ddb_entry_dma);
6699         if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
6700                 ql4_printk(KERN_ERR, ha, "Out of memory\n");
6701                 goto exit_find_st_idx;
6702         }
6703
6704         status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6705                                           flash_ddb_entry_dma, fw_idx);
6706         if (status == QLA_SUCCESS) {
6707                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6708                 if (status == QLA_SUCCESS) {
6709                         *flash_index = fw_idx;
6710                         ret = QLA_SUCCESS;
6711                         goto exit_find_st_idx;
6712                 }
6713         }
6714
6715         for (idx = 0; idx < max_ddbs; idx++) {
6716                 status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6717                                                   flash_ddb_entry_dma, idx);
6718                 if (status == QLA_ERROR)
6719                         continue;
6720
6721                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6722                 if (status == QLA_SUCCESS) {
6723                         *flash_index = idx;
6724                         ret = QLA_SUCCESS;
6725                         goto exit_find_st_idx;
6726                 }
6727         }
6728
6729         if (idx == max_ddbs)
6730                 ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
6731                            fw_idx);
6732
6733 exit_find_st_idx:
6734         if (flash_ddb_entry)
6735                 dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
6736                               flash_ddb_entry_dma);
6737
6738         return ret;
6739 }
6740
6741 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
6742                                   struct list_head *list_st)
6743 {
6744         struct qla_ddb_index  *st_ddb_idx;
6745         int max_ddbs;
6746         int fw_idx_size;
6747         struct dev_db_entry *fw_ddb_entry;
6748         dma_addr_t fw_ddb_dma;
6749         int ret;
6750         uint32_t idx = 0, next_idx = 0;
6751         uint32_t state = 0, conn_err = 0;
6752         uint32_t flash_index = -1;
6753         uint16_t conn_id = 0;
6754
6755         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6756                                       &fw_ddb_dma);
6757         if (fw_ddb_entry == NULL) {
6758                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6759                 goto exit_st_list;
6760         }
6761
6762         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6763                                      MAX_DEV_DB_ENTRIES;
6764         fw_idx_size = sizeof(struct qla_ddb_index);
6765
6766         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6767                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6768                                               NULL, &next_idx, &state,
6769                                               &conn_err, NULL, &conn_id);
6770                 if (ret == QLA_ERROR)
6771                         break;
6772
6773                 /* Ignore DDB if invalid state (unassigned) */
6774                 if (state == DDB_DS_UNASSIGNED)
6775                         goto continue_next_st;
6776
6777                 /* Check if ST, add to the list_st */
6778                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
6779                         goto continue_next_st;
6780
6781                 st_ddb_idx = vzalloc(fw_idx_size);
6782                 if (!st_ddb_idx)
6783                         break;
6784
6785                 ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
6786                                                 &flash_index);
6787                 if (ret == QLA_ERROR) {
6788                         ql4_printk(KERN_ERR, ha,
6789                                    "No flash entry for ST at idx [%d]\n", idx);
6790                         st_ddb_idx->flash_ddb_idx = idx;
6791                 } else {
6792                         ql4_printk(KERN_INFO, ha,
6793                                    "ST at idx [%d] is stored at flash [%d]\n",
6794                                    idx, flash_index);
6795                         st_ddb_idx->flash_ddb_idx = flash_index;
6796                 }
6797
6798                 st_ddb_idx->fw_ddb_idx = idx;
6799
6800                 list_add_tail(&st_ddb_idx->list, list_st);
6801 continue_next_st:
6802                 if (next_idx == 0)
6803                         break;
6804         }
6805
6806 exit_st_list:
6807         if (fw_ddb_entry)
6808                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6809 }
6810
6811 /**
6812  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
6813  * @ha: pointer to adapter structure
6814  * @list_ddb: List from which failed ddb to be removed
6815  *
6816  * Iterate over the list of DDBs and find and remove DDBs that are either in
6817  * no connection active state or failed state
6818  **/
6819 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
6820                                       struct list_head *list_ddb)
6821 {
6822         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6823         uint32_t next_idx = 0;
6824         uint32_t state = 0, conn_err = 0;
6825         int ret;
6826
6827         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6828                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
6829                                               NULL, 0, NULL, &next_idx, &state,
6830                                               &conn_err, NULL, NULL);
6831                 if (ret == QLA_ERROR)
6832                         continue;
6833
6834                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
6835                     state == DDB_DS_SESSION_FAILED) {
6836                         list_del_init(&ddb_idx->list);
6837                         vfree(ddb_idx);
6838                 }
6839         }
6840 }
6841
6842 static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
6843                                          struct ddb_entry *ddb_entry,
6844                                          struct dev_db_entry *fw_ddb_entry)
6845 {
6846         struct iscsi_cls_session *cls_sess;
6847         struct iscsi_session *sess;
6848         uint32_t max_ddbs = 0;
6849         uint16_t ddb_link = -1;
6850
6851         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6852                                      MAX_DEV_DB_ENTRIES;
6853
6854         cls_sess = ddb_entry->sess;
6855         sess = cls_sess->dd_data;
6856
6857         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6858         if (ddb_link < max_ddbs)
6859                 sess->discovery_parent_idx = ddb_link;
6860         else
6861                 sess->discovery_parent_idx = DDB_NO_LINK;
6862 }
6863
6864 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
6865                                    struct dev_db_entry *fw_ddb_entry,
6866                                    int is_reset, uint16_t idx)
6867 {
6868         struct iscsi_cls_session *cls_sess;
6869         struct iscsi_session *sess;
6870         struct iscsi_cls_conn *cls_conn;
6871         struct iscsi_endpoint *ep;
6872         uint16_t cmds_max = 32;
6873         uint16_t conn_id = 0;
6874         uint32_t initial_cmdsn = 0;
6875         int ret = QLA_SUCCESS;
6876
6877         struct ddb_entry *ddb_entry = NULL;
6878
6879         /* Create session object, with INVALID_ENTRY,
6880          * the targer_id would get set when we issue the login
6881          */
6882         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
6883                                        cmds_max, sizeof(struct ddb_entry),
6884                                        sizeof(struct ql4_task_data),
6885                                        initial_cmdsn, INVALID_ENTRY);
6886         if (!cls_sess) {
6887                 ret = QLA_ERROR;
6888                 goto exit_setup;
6889         }
6890
6891         /*
6892          * so calling module_put function to decrement the
6893          * reference count.
6894          **/
6895         module_put(qla4xxx_iscsi_transport.owner);
6896         sess = cls_sess->dd_data;
6897         ddb_entry = sess->dd_data;
6898         ddb_entry->sess = cls_sess;
6899
6900         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
6901         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
6902                sizeof(struct dev_db_entry));
6903
6904         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
6905
6906         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
6907
6908         if (!cls_conn) {
6909                 ret = QLA_ERROR;
6910                 goto exit_setup;
6911         }
6912
6913         ddb_entry->conn = cls_conn;
6914
6915         /* Setup ep, for displaying attributes in sysfs */
6916         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
6917         if (ep) {
6918                 ep->conn = cls_conn;
6919                 cls_conn->ep = ep;
6920         } else {
6921                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
6922                 ret = QLA_ERROR;
6923                 goto exit_setup;
6924         }
6925
6926         /* Update sess/conn params */
6927         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
6928         qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
6929
6930         if (is_reset == RESET_ADAPTER) {
6931                 iscsi_block_session(cls_sess);
6932                 /* Use the relogin path to discover new devices
6933                  *  by short-circuting the logic of setting
6934                  *  timer to relogin - instead set the flags
6935                  *  to initiate login right away.
6936                  */
6937                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
6938                 set_bit(DF_RELOGIN, &ddb_entry->flags);
6939         }
6940
6941 exit_setup:
6942         return ret;
6943 }
6944
6945 static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
6946                                        struct list_head *list_ddb,
6947                                        struct dev_db_entry *fw_ddb_entry)
6948 {
6949         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6950         uint16_t ddb_link;
6951
6952         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6953
6954         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6955                 if (ddb_idx->fw_ddb_idx == ddb_link) {
6956                         DEBUG2(ql4_printk(KERN_INFO, ha,
6957                                           "Updating NT parent idx from [%d] to [%d]\n",
6958                                           ddb_link, ddb_idx->flash_ddb_idx));
6959                         fw_ddb_entry->ddb_link =
6960                                             cpu_to_le16(ddb_idx->flash_ddb_idx);
6961                         return;
6962                 }
6963         }
6964 }
6965
6966 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
6967                                   struct list_head *list_nt,
6968                                   struct list_head *list_st,
6969                                   int is_reset)
6970 {
6971         struct dev_db_entry *fw_ddb_entry;
6972         struct ddb_entry *ddb_entry = NULL;
6973         dma_addr_t fw_ddb_dma;
6974         int max_ddbs;
6975         int fw_idx_size;
6976         int ret;
6977         uint32_t idx = 0, next_idx = 0;
6978         uint32_t state = 0, conn_err = 0;
6979         uint32_t ddb_idx = -1;
6980         uint16_t conn_id = 0;
6981         uint16_t ddb_link = -1;
6982         struct qla_ddb_index  *nt_ddb_idx;
6983
6984         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6985                                       &fw_ddb_dma);
6986         if (fw_ddb_entry == NULL) {
6987                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6988                 goto exit_nt_list;
6989         }
6990         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6991                                      MAX_DEV_DB_ENTRIES;
6992         fw_idx_size = sizeof(struct qla_ddb_index);
6993
6994         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6995                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6996                                               NULL, &next_idx, &state,
6997                                               &conn_err, NULL, &conn_id);
6998                 if (ret == QLA_ERROR)
6999                         break;
7000
7001                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
7002                         goto continue_next_nt;
7003
7004                 /* Check if NT, then add to list it */
7005                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
7006                         goto continue_next_nt;
7007
7008                 ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
7009                 if (ddb_link < max_ddbs)
7010                         qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);
7011
7012                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
7013                     state == DDB_DS_SESSION_FAILED) &&
7014                     (is_reset == INIT_ADAPTER))
7015                         goto continue_next_nt;
7016
7017                 DEBUG2(ql4_printk(KERN_INFO, ha,
7018                                   "Adding  DDB to session = 0x%x\n", idx));
7019
7020                 if (is_reset == INIT_ADAPTER) {
7021                         nt_ddb_idx = vmalloc(fw_idx_size);
7022                         if (!nt_ddb_idx)
7023                                 break;
7024
7025                         nt_ddb_idx->fw_ddb_idx = idx;
7026
7027                         /* Copy original isid as it may get updated in function
7028                          * qla4xxx_update_isid(). We need original isid in
7029                          * function qla4xxx_compare_tuple_ddb to find duplicate
7030                          * target */
7031                         memcpy(&nt_ddb_idx->flash_isid[0],
7032                                &fw_ddb_entry->isid[0],
7033                                sizeof(nt_ddb_idx->flash_isid));
7034
7035                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
7036                                                           fw_ddb_entry);
7037                         if (ret == QLA_SUCCESS) {
7038                                 /* free nt_ddb_idx and do not add to list_nt */
7039                                 vfree(nt_ddb_idx);
7040                                 goto continue_next_nt;
7041                         }
7042
7043                         /* Copy updated isid */
7044                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
7045                                sizeof(struct dev_db_entry));
7046
7047                         list_add_tail(&nt_ddb_idx->list, list_nt);
7048                 } else if (is_reset == RESET_ADAPTER) {
7049                         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
7050                                                         &ddb_idx);
7051                         if (ret == QLA_SUCCESS) {
7052                                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
7053                                                                        ddb_idx);
7054                                 if (ddb_entry != NULL)
7055                                         qla4xxx_update_sess_disc_idx(ha,
7056                                                                      ddb_entry,
7057                                                                   fw_ddb_entry);
7058                                 goto continue_next_nt;
7059                         }
7060                 }
7061
7062                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
7063                 if (ret == QLA_ERROR)
7064                         goto exit_nt_list;
7065
7066 continue_next_nt:
7067                 if (next_idx == 0)
7068                         break;
7069         }
7070
7071 exit_nt_list:
7072         if (fw_ddb_entry)
7073                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7074 }
7075
7076 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
7077                                       struct list_head *list_nt,
7078                                       uint16_t target_id)
7079 {
7080         struct dev_db_entry *fw_ddb_entry;
7081         dma_addr_t fw_ddb_dma;
7082         int max_ddbs;
7083         int fw_idx_size;
7084         int ret;
7085         uint32_t idx = 0, next_idx = 0;
7086         uint32_t state = 0, conn_err = 0;
7087         uint16_t conn_id = 0;
7088         struct qla_ddb_index  *nt_ddb_idx;
7089
7090         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7091                                       &fw_ddb_dma);
7092         if (fw_ddb_entry == NULL) {
7093                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7094                 goto exit_new_nt_list;
7095         }
7096         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7097                                      MAX_DEV_DB_ENTRIES;
7098         fw_idx_size = sizeof(struct qla_ddb_index);
7099
7100         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7101                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7102                                               NULL, &next_idx, &state,
7103                                               &conn_err, NULL, &conn_id);
7104                 if (ret == QLA_ERROR)
7105                         break;
7106
7107                 /* Check if NT, then add it to list */
7108                 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7109                         goto continue_next_new_nt;
7110
7111                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
7112                         goto continue_next_new_nt;
7113
7114                 DEBUG2(ql4_printk(KERN_INFO, ha,
7115                                   "Adding  DDB to session = 0x%x\n", idx));
7116
7117                 nt_ddb_idx = vmalloc(fw_idx_size);
7118                 if (!nt_ddb_idx)
7119                         break;
7120
7121                 nt_ddb_idx->fw_ddb_idx = idx;
7122
7123                 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7124                 if (ret == QLA_SUCCESS) {
7125                         /* free nt_ddb_idx and do not add to list_nt */
7126                         vfree(nt_ddb_idx);
7127                         goto continue_next_new_nt;
7128                 }
7129
7130                 if (target_id < max_ddbs)
7131                         fw_ddb_entry->ddb_link = cpu_to_le16(target_id);
7132
7133                 list_add_tail(&nt_ddb_idx->list, list_nt);
7134
7135                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7136                                               idx);
7137                 if (ret == QLA_ERROR)
7138                         goto exit_new_nt_list;
7139
7140 continue_next_new_nt:
7141                 if (next_idx == 0)
7142                         break;
7143         }
7144
7145 exit_new_nt_list:
7146         if (fw_ddb_entry)
7147                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7148 }
7149
7150 /**
7151  * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
7152  * @dev: dev associated with the sysfs entry
7153  * @data: pointer to flashnode session object
7154  *
7155  * Returns:
7156  *      1: if flashnode entry is non-persistent
7157  *      0: if flashnode entry is persistent
7158  **/
7159 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
7160 {
7161         struct iscsi_bus_flash_session *fnode_sess;
7162
7163         if (!iscsi_flashnode_bus_match(dev, NULL))
7164                 return 0;
7165
7166         fnode_sess = iscsi_dev_to_flash_session(dev);
7167
7168         return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
7169 }
7170
7171 /**
7172  * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
7173  * @ha: pointer to host
7174  * @fw_ddb_entry: flash ddb data
7175  * @idx: target index
7176  * @user: if set then this call is made from userland else from kernel
7177  *
7178  * Returns:
7179  * On sucess: QLA_SUCCESS
7180  * On failure: QLA_ERROR
7181  *
7182  * This create separate sysfs entries for session and connection attributes of
7183  * the given fw ddb entry.
7184  * If this is invoked as a result of a userspace call then the entry is marked
7185  * as nonpersistent using flash_state field.
7186  **/
7187 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
7188                                         struct dev_db_entry *fw_ddb_entry,
7189                                         uint16_t *idx, int user)
7190 {
7191         struct iscsi_bus_flash_session *fnode_sess = NULL;
7192         struct iscsi_bus_flash_conn *fnode_conn = NULL;
7193         int rc = QLA_ERROR;
7194
7195         fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
7196                                                  &qla4xxx_iscsi_transport, 0);
7197         if (!fnode_sess) {
7198                 ql4_printk(KERN_ERR, ha,
7199                            "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
7200                            __func__, *idx, ha->host_no);
7201                 goto exit_tgt_create;
7202         }
7203
7204         fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
7205                                                  &qla4xxx_iscsi_transport, 0);
7206         if (!fnode_conn) {
7207                 ql4_printk(KERN_ERR, ha,
7208                            "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
7209                            __func__, *idx, ha->host_no);
7210                 goto free_sess;
7211         }
7212
7213         if (user) {
7214                 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
7215         } else {
7216                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7217
7218                 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
7219                         fnode_sess->is_boot_target = 1;
7220                 else
7221                         fnode_sess->is_boot_target = 0;
7222         }
7223
7224         rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
7225                                            fw_ddb_entry);
7226
7227         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7228                    __func__, fnode_sess->dev.kobj.name);
7229
7230         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7231                    __func__, fnode_conn->dev.kobj.name);
7232
7233         return QLA_SUCCESS;
7234
7235 free_sess:
7236         iscsi_destroy_flashnode_sess(fnode_sess);
7237
7238 exit_tgt_create:
7239         return QLA_ERROR;
7240 }
7241
7242 /**
7243  * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
7244  * @shost: pointer to host
7245  * @buf: type of ddb entry (ipv4/ipv6)
7246  * @len: length of buf
7247  *
7248  * This creates new ddb entry in the flash by finding first free index and
7249  * storing default ddb there. And then create sysfs entry for the new ddb entry.
7250  **/
7251 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
7252                                  int len)
7253 {
7254         struct scsi_qla_host *ha = to_qla_host(shost);
7255         struct dev_db_entry *fw_ddb_entry = NULL;
7256         dma_addr_t fw_ddb_entry_dma;
7257         struct device *dev;
7258         uint16_t idx = 0;
7259         uint16_t max_ddbs = 0;
7260         uint32_t options = 0;
7261         uint32_t rval = QLA_ERROR;
7262
7263         if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
7264             strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
7265                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
7266                                   __func__));
7267                 goto exit_ddb_add;
7268         }
7269
7270         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
7271                                      MAX_DEV_DB_ENTRIES;
7272
7273         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7274                                           &fw_ddb_entry_dma, GFP_KERNEL);
7275         if (!fw_ddb_entry) {
7276                 DEBUG2(ql4_printk(KERN_ERR, ha,
7277                                   "%s: Unable to allocate dma buffer\n",
7278                                   __func__));
7279                 goto exit_ddb_add;
7280         }
7281
7282         dev = iscsi_find_flashnode_sess(ha->host, NULL,
7283                                         qla4xxx_sysfs_ddb_is_non_persistent);
7284         if (dev) {
7285                 ql4_printk(KERN_ERR, ha,
7286                            "%s: A non-persistent entry %s found\n",
7287                            __func__, dev->kobj.name);
7288                 put_device(dev);
7289                 goto exit_ddb_add;
7290         }
7291
7292         /* Index 0 and 1 are reserved for boot target entries */
7293         for (idx = 2; idx < max_ddbs; idx++) {
7294                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
7295                                              fw_ddb_entry_dma, idx))
7296                         break;
7297         }
7298
7299         if (idx == max_ddbs)
7300                 goto exit_ddb_add;
7301
7302         if (!strncasecmp("ipv6", buf, 4))
7303                 options |= IPV6_DEFAULT_DDB_ENTRY;
7304
7305         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7306         if (rval == QLA_ERROR)
7307                 goto exit_ddb_add;
7308
7309         rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
7310
7311 exit_ddb_add:
7312         if (fw_ddb_entry)
7313                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7314                                   fw_ddb_entry, fw_ddb_entry_dma);
7315         if (rval == QLA_SUCCESS)
7316                 return idx;
7317         else
7318                 return -EIO;
7319 }
7320
7321 /**
7322  * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
7323  * @fnode_sess: pointer to session attrs of flash ddb entry
7324  * @fnode_conn: pointer to connection attrs of flash ddb entry
7325  *
7326  * This writes the contents of target ddb buffer to Flash with a valid cookie
7327  * value in order to make the ddb entry persistent.
7328  **/
7329 static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
7330                                     struct iscsi_bus_flash_conn *fnode_conn)
7331 {
7332         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7333         struct scsi_qla_host *ha = to_qla_host(shost);
7334         uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
7335         struct dev_db_entry *fw_ddb_entry = NULL;
7336         dma_addr_t fw_ddb_entry_dma;
7337         uint32_t options = 0;
7338         int rval = 0;
7339
7340         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7341                                           &fw_ddb_entry_dma, GFP_KERNEL);
7342         if (!fw_ddb_entry) {
7343                 DEBUG2(ql4_printk(KERN_ERR, ha,
7344                                   "%s: Unable to allocate dma buffer\n",
7345                                   __func__));
7346                 rval = -ENOMEM;
7347                 goto exit_ddb_apply;
7348         }
7349
7350         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7351                 options |= IPV6_DEFAULT_DDB_ENTRY;
7352
7353         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7354         if (rval == QLA_ERROR)
7355                 goto exit_ddb_apply;
7356
7357         dev_db_start_offset += (fnode_sess->target_id *
7358                                 sizeof(*fw_ddb_entry));
7359
7360         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7361         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7362
7363         rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
7364                                  sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
7365
7366         if (rval == QLA_SUCCESS) {
7367                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7368                 ql4_printk(KERN_INFO, ha,
7369                            "%s: flash node %u of host %lu written to flash\n",
7370                            __func__, fnode_sess->target_id, ha->host_no);
7371         } else {
7372                 rval = -EIO;
7373                 ql4_printk(KERN_ERR, ha,
7374                            "%s: Error while writing flash node %u of host %lu to flash\n",
7375                            __func__, fnode_sess->target_id, ha->host_no);
7376         }
7377
7378 exit_ddb_apply:
7379         if (fw_ddb_entry)
7380                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7381                                   fw_ddb_entry, fw_ddb_entry_dma);
7382         return rval;
7383 }
7384
7385 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
7386                                            struct dev_db_entry *fw_ddb_entry,
7387                                            uint16_t idx)
7388 {
7389         struct dev_db_entry *ddb_entry = NULL;
7390         dma_addr_t ddb_entry_dma;
7391         unsigned long wtime;
7392         uint32_t mbx_sts = 0;
7393         uint32_t state = 0, conn_err = 0;
7394         uint16_t tmo = 0;
7395         int ret = 0;
7396
7397         ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7398                                        &ddb_entry_dma, GFP_KERNEL);
7399         if (!ddb_entry) {
7400                 DEBUG2(ql4_printk(KERN_ERR, ha,
7401                                   "%s: Unable to allocate dma buffer\n",
7402                                   __func__));
7403                 return QLA_ERROR;
7404         }
7405
7406         memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
7407
7408         ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
7409         if (ret != QLA_SUCCESS) {
7410                 DEBUG2(ql4_printk(KERN_ERR, ha,
7411                                   "%s: Unable to set ddb entry for index %d\n",
7412                                   __func__, idx));
7413                 goto exit_ddb_conn_open;
7414         }
7415
7416         qla4xxx_conn_open(ha, idx);
7417
7418         /* To ensure that sendtargets is done, wait for at least 12 secs */
7419         tmo = ((ha->def_timeout > LOGIN_TOV) &&
7420                (ha->def_timeout < LOGIN_TOV * 10) ?
7421                ha->def_timeout : LOGIN_TOV);
7422
7423         DEBUG2(ql4_printk(KERN_INFO, ha,
7424                           "Default time to wait for login to ddb %d\n", tmo));
7425
7426         wtime = jiffies + (HZ * tmo);
7427         do {
7428                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
7429                                               NULL, &state, &conn_err, NULL,
7430                                               NULL);
7431                 if (ret == QLA_ERROR)
7432                         continue;
7433
7434                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
7435                     state == DDB_DS_SESSION_FAILED)
7436                         break;
7437
7438                 schedule_timeout_uninterruptible(HZ / 10);
7439         } while (time_after(wtime, jiffies));
7440
7441 exit_ddb_conn_open:
7442         if (ddb_entry)
7443                 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7444                                   ddb_entry, ddb_entry_dma);
7445         return ret;
7446 }
7447
7448 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
7449                                 struct dev_db_entry *fw_ddb_entry,
7450                                 uint16_t target_id)
7451 {
7452         struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
7453         struct list_head list_nt;
7454         uint16_t ddb_index;
7455         int ret = 0;
7456
7457         if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
7458                 ql4_printk(KERN_WARNING, ha,
7459                            "%s: A discovery already in progress!\n", __func__);
7460                 return QLA_ERROR;
7461         }
7462
7463         INIT_LIST_HEAD(&list_nt);
7464
7465         set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7466
7467         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
7468         if (ret == QLA_ERROR)
7469                 goto exit_login_st_clr_bit;
7470
7471         ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
7472         if (ret == QLA_ERROR)
7473                 goto exit_login_st;
7474
7475         qla4xxx_build_new_nt_list(ha, &list_nt, target_id);
7476
7477         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
7478                 list_del_init(&ddb_idx->list);
7479                 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
7480                 vfree(ddb_idx);
7481         }
7482
7483 exit_login_st:
7484         if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
7485                 ql4_printk(KERN_ERR, ha,
7486                            "Unable to clear DDB index = 0x%x\n", ddb_index);
7487         }
7488
7489         clear_bit(ddb_index, ha->ddb_idx_map);
7490
7491 exit_login_st_clr_bit:
7492         clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7493         return ret;
7494 }
7495
7496 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
7497                                 struct dev_db_entry *fw_ddb_entry,
7498                                 uint16_t idx)
7499 {
7500         int ret = QLA_ERROR;
7501
7502         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7503         if (ret != QLA_SUCCESS)
7504                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7505                                               idx);
7506         else
7507                 ret = -EPERM;
7508
7509         return ret;
7510 }
7511
7512 /**
7513  * qla4xxx_sysfs_ddb_login - Login to the specified target
7514  * @fnode_sess: pointer to session attrs of flash ddb entry
7515  * @fnode_conn: pointer to connection attrs of flash ddb entry
7516  *
7517  * This logs in to the specified target
7518  **/
7519 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
7520                                    struct iscsi_bus_flash_conn *fnode_conn)
7521 {
7522         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7523         struct scsi_qla_host *ha = to_qla_host(shost);
7524         struct dev_db_entry *fw_ddb_entry = NULL;
7525         dma_addr_t fw_ddb_entry_dma;
7526         uint32_t options = 0;
7527         int ret = 0;
7528
7529         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
7530                 ql4_printk(KERN_ERR, ha,
7531                            "%s: Target info is not persistent\n", __func__);
7532                 ret = -EIO;
7533                 goto exit_ddb_login;
7534         }
7535
7536         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7537                                           &fw_ddb_entry_dma, GFP_KERNEL);
7538         if (!fw_ddb_entry) {
7539                 DEBUG2(ql4_printk(KERN_ERR, ha,
7540                                   "%s: Unable to allocate dma buffer\n",
7541                                   __func__));
7542                 ret = -ENOMEM;
7543                 goto exit_ddb_login;
7544         }
7545
7546         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7547                 options |= IPV6_DEFAULT_DDB_ENTRY;
7548
7549         ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7550         if (ret == QLA_ERROR)
7551                 goto exit_ddb_login;
7552
7553         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7554         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7555
7556         if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7557                 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
7558                                            fnode_sess->target_id);
7559         else
7560                 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
7561                                            fnode_sess->target_id);
7562
7563         if (ret > 0)
7564                 ret = -EIO;
7565
7566 exit_ddb_login:
7567         if (fw_ddb_entry)
7568                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7569                                   fw_ddb_entry, fw_ddb_entry_dma);
7570         return ret;
7571 }
7572
7573 /**
7574  * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
7575  * @cls_sess: pointer to session to be logged out
7576  *
7577  * This performs session log out from the specified target
7578  **/
7579 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
7580 {
7581         struct iscsi_session *sess;
7582         struct ddb_entry *ddb_entry = NULL;
7583         struct scsi_qla_host *ha;
7584         struct dev_db_entry *fw_ddb_entry = NULL;
7585         dma_addr_t fw_ddb_entry_dma;
7586         unsigned long flags;
7587         unsigned long wtime;
7588         uint32_t ddb_state;
7589         int options;
7590         int ret = 0;
7591
7592         sess = cls_sess->dd_data;
7593         ddb_entry = sess->dd_data;
7594         ha = ddb_entry->ha;
7595
7596         if (ddb_entry->ddb_type != FLASH_DDB) {
7597                 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
7598                            __func__);
7599                 ret = -ENXIO;
7600                 goto exit_ddb_logout;
7601         }
7602
7603         if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
7604                 ql4_printk(KERN_ERR, ha,
7605                            "%s: Logout from boot target entry is not permitted.\n",
7606                            __func__);
7607                 ret = -EPERM;
7608                 goto exit_ddb_logout;
7609         }
7610
7611         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7612                                           &fw_ddb_entry_dma, GFP_KERNEL);
7613         if (!fw_ddb_entry) {
7614                 ql4_printk(KERN_ERR, ha,
7615                            "%s: Unable to allocate dma buffer\n", __func__);
7616                 ret = -ENOMEM;
7617                 goto exit_ddb_logout;
7618         }
7619
7620         if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
7621                 goto ddb_logout_init;
7622
7623         ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7624                                       fw_ddb_entry, fw_ddb_entry_dma,
7625                                       NULL, NULL, &ddb_state, NULL,
7626                                       NULL, NULL);
7627         if (ret == QLA_ERROR)
7628                 goto ddb_logout_init;
7629
7630         if (ddb_state == DDB_DS_SESSION_ACTIVE)
7631                 goto ddb_logout_init;
7632
7633         /* wait until next relogin is triggered using DF_RELOGIN and
7634          * clear DF_RELOGIN to avoid invocation of further relogin
7635          */
7636         wtime = jiffies + (HZ * RELOGIN_TOV);
7637         do {
7638                 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
7639                         goto ddb_logout_init;
7640
7641                 schedule_timeout_uninterruptible(HZ);
7642         } while ((time_after(wtime, jiffies)));
7643
7644 ddb_logout_init:
7645         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
7646         atomic_set(&ddb_entry->relogin_timer, 0);
7647
7648         options = LOGOUT_OPTION_CLOSE_SESSION;
7649         qla4xxx_session_logout_ddb(ha, ddb_entry, options);
7650
7651         memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
7652         wtime = jiffies + (HZ * LOGOUT_TOV);
7653         do {
7654                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7655                                               fw_ddb_entry, fw_ddb_entry_dma,
7656                                               NULL, NULL, &ddb_state, NULL,
7657                                               NULL, NULL);
7658                 if (ret == QLA_ERROR)
7659                         goto ddb_logout_clr_sess;
7660
7661                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
7662                     (ddb_state == DDB_DS_SESSION_FAILED))
7663                         goto ddb_logout_clr_sess;
7664
7665                 schedule_timeout_uninterruptible(HZ);
7666         } while ((time_after(wtime, jiffies)));
7667
7668 ddb_logout_clr_sess:
7669         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7670         /*
7671          * we have decremented the reference count of the driver
7672          * when we setup the session to have the driver unload
7673          * to be seamless without actually destroying the
7674          * session
7675          **/
7676         try_module_get(qla4xxx_iscsi_transport.owner);
7677         iscsi_destroy_endpoint(ddb_entry->conn->ep);
7678
7679         spin_lock_irqsave(&ha->hardware_lock, flags);
7680         qla4xxx_free_ddb(ha, ddb_entry);
7681         clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
7682         spin_unlock_irqrestore(&ha->hardware_lock, flags);
7683
7684         iscsi_session_teardown(ddb_entry->sess);
7685
7686         clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
7687         ret = QLA_SUCCESS;
7688
7689 exit_ddb_logout:
7690         if (fw_ddb_entry)
7691                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7692                                   fw_ddb_entry, fw_ddb_entry_dma);
7693         return ret;
7694 }
7695
7696 /**
7697  * qla4xxx_sysfs_ddb_logout - Logout from the specified target
7698  * @fnode_sess: pointer to session attrs of flash ddb entry
7699  * @fnode_conn: pointer to connection attrs of flash ddb entry
7700  *
7701  * This performs log out from the specified target
7702  **/
7703 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
7704                                     struct iscsi_bus_flash_conn *fnode_conn)
7705 {
7706         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7707         struct scsi_qla_host *ha = to_qla_host(shost);
7708         struct ql4_tuple_ddb *flash_tddb = NULL;
7709         struct ql4_tuple_ddb *tmp_tddb = NULL;
7710         struct dev_db_entry *fw_ddb_entry = NULL;
7711         struct ddb_entry *ddb_entry = NULL;
7712         dma_addr_t fw_ddb_dma;
7713         uint32_t next_idx = 0;
7714         uint32_t state = 0, conn_err = 0;
7715         uint16_t conn_id = 0;
7716         int idx, index;
7717         int status, ret = 0;
7718
7719         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7720                                       &fw_ddb_dma);
7721         if (fw_ddb_entry == NULL) {
7722                 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
7723                 ret = -ENOMEM;
7724                 goto exit_ddb_logout;
7725         }
7726
7727         flash_tddb = vzalloc(sizeof(*flash_tddb));
7728         if (!flash_tddb) {
7729                 ql4_printk(KERN_WARNING, ha,
7730                            "%s:Memory Allocation failed.\n", __func__);
7731                 ret = -ENOMEM;
7732                 goto exit_ddb_logout;
7733         }
7734
7735         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
7736         if (!tmp_tddb) {
7737                 ql4_printk(KERN_WARNING, ha,
7738                            "%s:Memory Allocation failed.\n", __func__);
7739                 ret = -ENOMEM;
7740                 goto exit_ddb_logout;
7741         }
7742
7743         if (!fnode_sess->targetname) {
7744                 ql4_printk(KERN_ERR, ha,
7745                            "%s:Cannot logout from SendTarget entry\n",
7746                            __func__);
7747                 ret = -EPERM;
7748                 goto exit_ddb_logout;
7749         }
7750
7751         if (fnode_sess->is_boot_target) {
7752                 ql4_printk(KERN_ERR, ha,
7753                            "%s: Logout from boot target entry is not permitted.\n",
7754                            __func__);
7755                 ret = -EPERM;
7756                 goto exit_ddb_logout;
7757         }
7758
7759         strlcpy(flash_tddb->iscsi_name, fnode_sess->targetname,
7760                 ISCSI_NAME_SIZE);
7761
7762         if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7763                 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
7764         else
7765                 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
7766
7767         flash_tddb->tpgt = fnode_sess->tpgt;
7768         flash_tddb->port = fnode_conn->port;
7769
7770         COPY_ISID(flash_tddb->isid, fnode_sess->isid);
7771
7772         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7773                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7774                 if (ddb_entry == NULL)
7775                         continue;
7776
7777                 if (ddb_entry->ddb_type != FLASH_DDB)
7778                         continue;
7779
7780                 index = ddb_entry->sess->target_id;
7781                 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
7782                                                  fw_ddb_dma, NULL, &next_idx,
7783                                                  &state, &conn_err, NULL,
7784                                                  &conn_id);
7785                 if (status == QLA_ERROR) {
7786                         ret = -ENOMEM;
7787                         break;
7788                 }
7789
7790                 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
7791
7792                 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
7793                                                    true);
7794                 if (status == QLA_SUCCESS) {
7795                         ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
7796                         break;
7797                 }
7798         }
7799
7800         if (idx == MAX_DDB_ENTRIES)
7801                 ret = -ESRCH;
7802
7803 exit_ddb_logout:
7804         if (flash_tddb)
7805                 vfree(flash_tddb);
7806         if (tmp_tddb)
7807                 vfree(tmp_tddb);
7808         if (fw_ddb_entry)
7809                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7810
7811         return ret;
7812 }
7813
7814 static int
7815 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
7816                             int param, char *buf)
7817 {
7818         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7819         struct scsi_qla_host *ha = to_qla_host(shost);
7820         struct iscsi_bus_flash_conn *fnode_conn;
7821         struct ql4_chap_table chap_tbl;
7822         struct device *dev;
7823         int parent_type;
7824         int rc = 0;
7825
7826         dev = iscsi_find_flashnode_conn(fnode_sess);
7827         if (!dev)
7828                 return -EIO;
7829
7830         fnode_conn = iscsi_dev_to_flash_conn(dev);
7831
7832         switch (param) {
7833         case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
7834                 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
7835                 break;
7836         case ISCSI_FLASHNODE_PORTAL_TYPE:
7837                 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
7838                 break;
7839         case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
7840                 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
7841                 break;
7842         case ISCSI_FLASHNODE_DISCOVERY_SESS:
7843                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
7844                 break;
7845         case ISCSI_FLASHNODE_ENTRY_EN:
7846                 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
7847                 break;
7848         case ISCSI_FLASHNODE_HDR_DGST_EN:
7849                 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
7850                 break;
7851         case ISCSI_FLASHNODE_DATA_DGST_EN:
7852                 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
7853                 break;
7854         case ISCSI_FLASHNODE_IMM_DATA_EN:
7855                 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
7856                 break;
7857         case ISCSI_FLASHNODE_INITIAL_R2T_EN:
7858                 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
7859                 break;
7860         case ISCSI_FLASHNODE_DATASEQ_INORDER:
7861                 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
7862                 break;
7863         case ISCSI_FLASHNODE_PDU_INORDER:
7864                 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
7865                 break;
7866         case ISCSI_FLASHNODE_CHAP_AUTH_EN:
7867                 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
7868                 break;
7869         case ISCSI_FLASHNODE_SNACK_REQ_EN:
7870                 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
7871                 break;
7872         case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
7873                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
7874                 break;
7875         case ISCSI_FLASHNODE_BIDI_CHAP_EN:
7876                 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
7877                 break;
7878         case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
7879                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
7880                 break;
7881         case ISCSI_FLASHNODE_ERL:
7882                 rc = sprintf(buf, "%u\n", fnode_sess->erl);
7883                 break;
7884         case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
7885                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
7886                 break;
7887         case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
7888                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
7889                 break;
7890         case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
7891                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
7892                 break;
7893         case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
7894                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
7895                 break;
7896         case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
7897                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
7898                 break;
7899         case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
7900                 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
7901                 break;
7902         case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
7903                 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
7904                 break;
7905         case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
7906                 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
7907                 break;
7908         case ISCSI_FLASHNODE_FIRST_BURST:
7909                 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
7910                 break;
7911         case ISCSI_FLASHNODE_DEF_TIME2WAIT:
7912                 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
7913                 break;
7914         case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
7915                 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
7916                 break;
7917         case ISCSI_FLASHNODE_MAX_R2T:
7918                 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
7919                 break;
7920         case ISCSI_FLASHNODE_KEEPALIVE_TMO:
7921                 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
7922                 break;
7923         case ISCSI_FLASHNODE_ISID:
7924                 rc = sprintf(buf, "%pm\n", fnode_sess->isid);
7925                 break;
7926         case ISCSI_FLASHNODE_TSID:
7927                 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
7928                 break;
7929         case ISCSI_FLASHNODE_PORT:
7930                 rc = sprintf(buf, "%d\n", fnode_conn->port);
7931                 break;
7932         case ISCSI_FLASHNODE_MAX_BURST:
7933                 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
7934                 break;
7935         case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
7936                 rc = sprintf(buf, "%u\n",
7937                              fnode_sess->default_taskmgmt_timeout);
7938                 break;
7939         case ISCSI_FLASHNODE_IPADDR:
7940                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7941                         rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
7942                 else
7943                         rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
7944                 break;
7945         case ISCSI_FLASHNODE_ALIAS:
7946                 if (fnode_sess->targetalias)
7947                         rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
7948                 else
7949                         rc = sprintf(buf, "\n");
7950                 break;
7951         case ISCSI_FLASHNODE_REDIRECT_IPADDR:
7952                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7953                         rc = sprintf(buf, "%pI6\n",
7954                                      fnode_conn->redirect_ipaddr);
7955                 else
7956                         rc = sprintf(buf, "%pI4\n",
7957                                      fnode_conn->redirect_ipaddr);
7958                 break;
7959         case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
7960                 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
7961                 break;
7962         case ISCSI_FLASHNODE_LOCAL_PORT:
7963                 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
7964                 break;
7965         case ISCSI_FLASHNODE_IPV4_TOS:
7966                 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
7967                 break;
7968         case ISCSI_FLASHNODE_IPV6_TC:
7969                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7970                         rc = sprintf(buf, "%u\n",
7971                                      fnode_conn->ipv6_traffic_class);
7972                 else
7973                         rc = sprintf(buf, "\n");
7974                 break;
7975         case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
7976                 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
7977                 break;
7978         case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
7979                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7980                         rc = sprintf(buf, "%pI6\n",
7981                                      fnode_conn->link_local_ipv6_addr);
7982                 else
7983                         rc = sprintf(buf, "\n");
7984                 break;
7985         case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
7986                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
7987                 break;
7988         case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
7989                 if (fnode_sess->discovery_parent_type == DDB_ISNS)
7990                         parent_type = ISCSI_DISC_PARENT_ISNS;
7991                 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
7992                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
7993                 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
7994                         parent_type = ISCSI_DISC_PARENT_SENDTGT;
7995                 else
7996                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
7997
7998                 rc = sprintf(buf, "%s\n",
7999                              iscsi_get_discovery_parent_name(parent_type));
8000                 break;
8001         case ISCSI_FLASHNODE_NAME:
8002                 if (fnode_sess->targetname)
8003                         rc = sprintf(buf, "%s\n", fnode_sess->targetname);
8004                 else
8005                         rc = sprintf(buf, "\n");
8006                 break;
8007         case ISCSI_FLASHNODE_TPGT:
8008                 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
8009                 break;
8010         case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8011                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
8012                 break;
8013         case ISCSI_FLASHNODE_TCP_RECV_WSF:
8014                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
8015                 break;
8016         case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8017                 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
8018                 break;
8019         case ISCSI_FLASHNODE_USERNAME:
8020                 if (fnode_sess->chap_auth_en) {
8021                         qla4xxx_get_uni_chap_at_index(ha,
8022                                                       chap_tbl.name,
8023                                                       chap_tbl.secret,
8024                                                       fnode_sess->chap_out_idx);
8025                         rc = sprintf(buf, "%s\n", chap_tbl.name);
8026                 } else {
8027                         rc = sprintf(buf, "\n");
8028                 }
8029                 break;
8030         case ISCSI_FLASHNODE_PASSWORD:
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.secret);
8037                 } else {
8038                         rc = sprintf(buf, "\n");
8039                 }
8040                 break;
8041         case ISCSI_FLASHNODE_STATSN:
8042                 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
8043                 break;
8044         case ISCSI_FLASHNODE_EXP_STATSN:
8045                 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
8046                 break;
8047         case ISCSI_FLASHNODE_IS_BOOT_TGT:
8048                 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
8049                 break;
8050         default:
8051                 rc = -ENOSYS;
8052                 break;
8053         }
8054
8055         put_device(dev);
8056         return rc;
8057 }
8058
8059 /**
8060  * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
8061  * @fnode_sess: pointer to session attrs of flash ddb entry
8062  * @fnode_conn: pointer to connection attrs of flash ddb entry
8063  * @data: Parameters and their values to update
8064  * @len: len of data
8065  *
8066  * This sets the parameter of flash ddb entry and writes them to flash
8067  **/
8068 static int
8069 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
8070                             struct iscsi_bus_flash_conn *fnode_conn,
8071                             void *data, int len)
8072 {
8073         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8074         struct scsi_qla_host *ha = to_qla_host(shost);
8075         struct iscsi_flashnode_param_info *fnode_param;
8076         struct ql4_chap_table chap_tbl;
8077         struct nlattr *attr;
8078         uint16_t chap_out_idx = INVALID_ENTRY;
8079         int rc = QLA_ERROR;
8080         uint32_t rem = len;
8081
8082         memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
8083         nla_for_each_attr(attr, data, len, rem) {
8084                 fnode_param = nla_data(attr);
8085
8086                 switch (fnode_param->param) {
8087                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
8088                         fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
8089                         break;
8090                 case ISCSI_FLASHNODE_PORTAL_TYPE:
8091                         memcpy(fnode_sess->portal_type, fnode_param->value,
8092                                strlen(fnode_sess->portal_type));
8093                         break;
8094                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
8095                         fnode_sess->auto_snd_tgt_disable =
8096                                                         fnode_param->value[0];
8097                         break;
8098                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
8099                         fnode_sess->discovery_sess = fnode_param->value[0];
8100                         break;
8101                 case ISCSI_FLASHNODE_ENTRY_EN:
8102                         fnode_sess->entry_state = fnode_param->value[0];
8103                         break;
8104                 case ISCSI_FLASHNODE_HDR_DGST_EN:
8105                         fnode_conn->hdrdgst_en = fnode_param->value[0];
8106                         break;
8107                 case ISCSI_FLASHNODE_DATA_DGST_EN:
8108                         fnode_conn->datadgst_en = fnode_param->value[0];
8109                         break;
8110                 case ISCSI_FLASHNODE_IMM_DATA_EN:
8111                         fnode_sess->imm_data_en = fnode_param->value[0];
8112                         break;
8113                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
8114                         fnode_sess->initial_r2t_en = fnode_param->value[0];
8115                         break;
8116                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
8117                         fnode_sess->dataseq_inorder_en = fnode_param->value[0];
8118                         break;
8119                 case ISCSI_FLASHNODE_PDU_INORDER:
8120                         fnode_sess->pdu_inorder_en = fnode_param->value[0];
8121                         break;
8122                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
8123                         fnode_sess->chap_auth_en = fnode_param->value[0];
8124                         /* Invalidate chap index if chap auth is disabled */
8125                         if (!fnode_sess->chap_auth_en)
8126                                 fnode_sess->chap_out_idx = INVALID_ENTRY;
8127
8128                         break;
8129                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
8130                         fnode_conn->snack_req_en = fnode_param->value[0];
8131                         break;
8132                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
8133                         fnode_sess->discovery_logout_en = fnode_param->value[0];
8134                         break;
8135                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
8136                         fnode_sess->bidi_chap_en = fnode_param->value[0];
8137                         break;
8138                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
8139                         fnode_sess->discovery_auth_optional =
8140                                                         fnode_param->value[0];
8141                         break;
8142                 case ISCSI_FLASHNODE_ERL:
8143                         fnode_sess->erl = fnode_param->value[0];
8144                         break;
8145                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
8146                         fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
8147                         break;
8148                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
8149                         fnode_conn->tcp_nagle_disable = fnode_param->value[0];
8150                         break;
8151                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
8152                         fnode_conn->tcp_wsf_disable = fnode_param->value[0];
8153                         break;
8154                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
8155                         fnode_conn->tcp_timer_scale = fnode_param->value[0];
8156                         break;
8157                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
8158                         fnode_conn->tcp_timestamp_en = fnode_param->value[0];
8159                         break;
8160                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
8161                         fnode_conn->fragment_disable = fnode_param->value[0];
8162                         break;
8163                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
8164                         fnode_conn->max_recv_dlength =
8165                                         *(unsigned *)fnode_param->value;
8166                         break;
8167                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
8168                         fnode_conn->max_xmit_dlength =
8169                                         *(unsigned *)fnode_param->value;
8170                         break;
8171                 case ISCSI_FLASHNODE_FIRST_BURST:
8172                         fnode_sess->first_burst =
8173                                         *(unsigned *)fnode_param->value;
8174                         break;
8175                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
8176                         fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
8177                         break;
8178                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
8179                         fnode_sess->time2retain =
8180                                                 *(uint16_t *)fnode_param->value;
8181                         break;
8182                 case ISCSI_FLASHNODE_MAX_R2T:
8183                         fnode_sess->max_r2t =
8184                                         *(uint16_t *)fnode_param->value;
8185                         break;
8186                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
8187                         fnode_conn->keepalive_timeout =
8188                                 *(uint16_t *)fnode_param->value;
8189                         break;
8190                 case ISCSI_FLASHNODE_ISID:
8191                         memcpy(fnode_sess->isid, fnode_param->value,
8192                                sizeof(fnode_sess->isid));
8193                         break;
8194                 case ISCSI_FLASHNODE_TSID:
8195                         fnode_sess->tsid = *(uint16_t *)fnode_param->value;
8196                         break;
8197                 case ISCSI_FLASHNODE_PORT:
8198                         fnode_conn->port = *(uint16_t *)fnode_param->value;
8199                         break;
8200                 case ISCSI_FLASHNODE_MAX_BURST:
8201                         fnode_sess->max_burst = *(unsigned *)fnode_param->value;
8202                         break;
8203                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
8204                         fnode_sess->default_taskmgmt_timeout =
8205                                                 *(uint16_t *)fnode_param->value;
8206                         break;
8207                 case ISCSI_FLASHNODE_IPADDR:
8208                         memcpy(fnode_conn->ipaddress, fnode_param->value,
8209                                IPv6_ADDR_LEN);
8210                         break;
8211                 case ISCSI_FLASHNODE_ALIAS:
8212                         rc = iscsi_switch_str_param(&fnode_sess->targetalias,
8213                                                     (char *)fnode_param->value);
8214                         break;
8215                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
8216                         memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
8217                                IPv6_ADDR_LEN);
8218                         break;
8219                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
8220                         fnode_conn->max_segment_size =
8221                                         *(unsigned *)fnode_param->value;
8222                         break;
8223                 case ISCSI_FLASHNODE_LOCAL_PORT:
8224                         fnode_conn->local_port =
8225                                                 *(uint16_t *)fnode_param->value;
8226                         break;
8227                 case ISCSI_FLASHNODE_IPV4_TOS:
8228                         fnode_conn->ipv4_tos = fnode_param->value[0];
8229                         break;
8230                 case ISCSI_FLASHNODE_IPV6_TC:
8231                         fnode_conn->ipv6_traffic_class = fnode_param->value[0];
8232                         break;
8233                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8234                         fnode_conn->ipv6_flow_label = fnode_param->value[0];
8235                         break;
8236                 case ISCSI_FLASHNODE_NAME:
8237                         rc = iscsi_switch_str_param(&fnode_sess->targetname,
8238                                                     (char *)fnode_param->value);
8239                         break;
8240                 case ISCSI_FLASHNODE_TPGT:
8241                         fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
8242                         break;
8243                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8244                         memcpy(fnode_conn->link_local_ipv6_addr,
8245                                fnode_param->value, IPv6_ADDR_LEN);
8246                         break;
8247                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8248                         fnode_sess->discovery_parent_idx =
8249                                                 *(uint16_t *)fnode_param->value;
8250                         break;
8251                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8252                         fnode_conn->tcp_xmit_wsf =
8253                                                 *(uint8_t *)fnode_param->value;
8254                         break;
8255                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
8256                         fnode_conn->tcp_recv_wsf =
8257                                                 *(uint8_t *)fnode_param->value;
8258                         break;
8259                 case ISCSI_FLASHNODE_STATSN:
8260                         fnode_conn->statsn = *(uint32_t *)fnode_param->value;
8261                         break;
8262                 case ISCSI_FLASHNODE_EXP_STATSN:
8263                         fnode_conn->exp_statsn =
8264                                                 *(uint32_t *)fnode_param->value;
8265                         break;
8266                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8267                         chap_out_idx = *(uint16_t *)fnode_param->value;
8268                         if (!qla4xxx_get_uni_chap_at_index(ha,
8269                                                            chap_tbl.name,
8270                                                            chap_tbl.secret,
8271                                                            chap_out_idx)) {
8272                                 fnode_sess->chap_out_idx = chap_out_idx;
8273                                 /* Enable chap auth if chap index is valid */
8274                                 fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
8275                         }
8276                         break;
8277                 default:
8278                         ql4_printk(KERN_ERR, ha,
8279                                    "%s: No such sysfs attribute\n", __func__);
8280                         rc = -ENOSYS;
8281                         goto exit_set_param;
8282                 }
8283         }
8284
8285         rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
8286
8287 exit_set_param:
8288         return rc;
8289 }
8290
8291 /**
8292  * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
8293  * @fnode_sess: pointer to session attrs of flash ddb entry
8294  *
8295  * This invalidates the flash ddb entry at the given index
8296  **/
8297 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
8298 {
8299         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8300         struct scsi_qla_host *ha = to_qla_host(shost);
8301         uint32_t dev_db_start_offset;
8302         uint32_t dev_db_end_offset;
8303         struct dev_db_entry *fw_ddb_entry = NULL;
8304         dma_addr_t fw_ddb_entry_dma;
8305         uint16_t *ddb_cookie = NULL;
8306         size_t ddb_size = 0;
8307         void *pddb = NULL;
8308         int target_id;
8309         int rc = 0;
8310
8311         if (fnode_sess->is_boot_target) {
8312                 rc = -EPERM;
8313                 DEBUG2(ql4_printk(KERN_ERR, ha,
8314                                   "%s: Deletion of boot target entry is not permitted.\n",
8315                                   __func__));
8316                 goto exit_ddb_del;
8317         }
8318
8319         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
8320                 goto sysfs_ddb_del;
8321
8322         if (is_qla40XX(ha)) {
8323                 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
8324                 dev_db_end_offset = FLASH_OFFSET_DB_END;
8325                 dev_db_start_offset += (fnode_sess->target_id *
8326                                        sizeof(*fw_ddb_entry));
8327                 ddb_size = sizeof(*fw_ddb_entry);
8328         } else {
8329                 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
8330                                       (ha->hw.flt_region_ddb << 2);
8331                 /* flt_ddb_size is DDB table size for both ports
8332                  * so divide it by 2 to calculate the offset for second port
8333                  */
8334                 if (ha->port_num == 1)
8335                         dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
8336
8337                 dev_db_end_offset = dev_db_start_offset +
8338                                     (ha->hw.flt_ddb_size / 2);
8339
8340                 dev_db_start_offset += (fnode_sess->target_id *
8341                                        sizeof(*fw_ddb_entry));
8342                 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
8343
8344                 ddb_size = sizeof(*ddb_cookie);
8345         }
8346
8347         DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
8348                           __func__, dev_db_start_offset, dev_db_end_offset));
8349
8350         if (dev_db_start_offset > dev_db_end_offset) {
8351                 rc = -EIO;
8352                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
8353                                   __func__, fnode_sess->target_id));
8354                 goto exit_ddb_del;
8355         }
8356
8357         pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
8358                                   &fw_ddb_entry_dma, GFP_KERNEL);
8359         if (!pddb) {
8360                 rc = -ENOMEM;
8361                 DEBUG2(ql4_printk(KERN_ERR, ha,
8362                                   "%s: Unable to allocate dma buffer\n",
8363                                   __func__));
8364                 goto exit_ddb_del;
8365         }
8366
8367         if (is_qla40XX(ha)) {
8368                 fw_ddb_entry = pddb;
8369                 memset(fw_ddb_entry, 0, ddb_size);
8370                 ddb_cookie = &fw_ddb_entry->cookie;
8371         } else {
8372                 ddb_cookie = pddb;
8373         }
8374
8375         /* invalidate the cookie */
8376         *ddb_cookie = 0xFFEE;
8377         qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
8378                           ddb_size, FLASH_OPT_RMW_COMMIT);
8379
8380 sysfs_ddb_del:
8381         target_id = fnode_sess->target_id;
8382         iscsi_destroy_flashnode_sess(fnode_sess);
8383         ql4_printk(KERN_INFO, ha,
8384                    "%s: session and conn entries for flashnode %u of host %lu deleted\n",
8385                    __func__, target_id, ha->host_no);
8386 exit_ddb_del:
8387         if (pddb)
8388                 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
8389                                   fw_ddb_entry_dma);
8390         return rc;
8391 }
8392
8393 /**
8394  * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
8395  * @ha: pointer to adapter structure
8396  *
8397  * Export the firmware DDB for all send targets and normal targets to sysfs.
8398  **/
8399 int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
8400 {
8401         struct dev_db_entry *fw_ddb_entry = NULL;
8402         dma_addr_t fw_ddb_entry_dma;
8403         uint16_t max_ddbs;
8404         uint16_t idx = 0;
8405         int ret = QLA_SUCCESS;
8406
8407         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
8408                                           sizeof(*fw_ddb_entry),
8409                                           &fw_ddb_entry_dma, GFP_KERNEL);
8410         if (!fw_ddb_entry) {
8411                 DEBUG2(ql4_printk(KERN_ERR, ha,
8412                                   "%s: Unable to allocate dma buffer\n",
8413                                   __func__));
8414                 return -ENOMEM;
8415         }
8416
8417         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
8418                                      MAX_DEV_DB_ENTRIES;
8419
8420         for (idx = 0; idx < max_ddbs; idx++) {
8421                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
8422                                              idx))
8423                         continue;
8424
8425                 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
8426                 if (ret) {
8427                         ret = -EIO;
8428                         break;
8429                 }
8430         }
8431
8432         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
8433                           fw_ddb_entry_dma);
8434
8435         return ret;
8436 }
8437
8438 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
8439 {
8440         iscsi_destroy_all_flashnode(ha->host);
8441 }
8442
8443 /**
8444  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
8445  * @ha: pointer to adapter structure
8446  * @is_reset: Is this init path or reset path
8447  *
8448  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
8449  * using connection open, then create the list of normal targets (nt)
8450  * from firmware DDBs. Based on the list of nt setup session and connection
8451  * objects.
8452  **/
8453 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
8454 {
8455         uint16_t tmo = 0;
8456         struct list_head list_st, list_nt;
8457         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
8458         unsigned long wtime;
8459
8460         if (!test_bit(AF_LINK_UP, &ha->flags)) {
8461                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
8462                 ha->is_reset = is_reset;
8463                 return;
8464         }
8465
8466         INIT_LIST_HEAD(&list_st);
8467         INIT_LIST_HEAD(&list_nt);
8468
8469         qla4xxx_build_st_list(ha, &list_st);
8470
8471         /* Before issuing conn open mbox, ensure all IPs states are configured
8472          * Note, conn open fails if IPs are not configured
8473          */
8474         qla4xxx_wait_for_ip_configuration(ha);
8475
8476         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
8477         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
8478                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
8479         }
8480
8481         /* Wait to ensure all sendtargets are done for min 12 sec wait */
8482         tmo = ((ha->def_timeout > LOGIN_TOV) &&
8483                (ha->def_timeout < LOGIN_TOV * 10) ?
8484                ha->def_timeout : LOGIN_TOV);
8485
8486         DEBUG2(ql4_printk(KERN_INFO, ha,
8487                           "Default time to wait for build ddb %d\n", tmo));
8488
8489         wtime = jiffies + (HZ * tmo);
8490         do {
8491                 if (list_empty(&list_st))
8492                         break;
8493
8494                 qla4xxx_remove_failed_ddb(ha, &list_st);
8495                 schedule_timeout_uninterruptible(HZ / 10);
8496         } while (time_after(wtime, jiffies));
8497
8498
8499         qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);
8500
8501         qla4xxx_free_ddb_list(&list_st);
8502         qla4xxx_free_ddb_list(&list_nt);
8503
8504         qla4xxx_free_ddb_index(ha);
8505 }
8506
8507 /**
8508  * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
8509  * response.
8510  * @ha: pointer to adapter structure
8511  *
8512  * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
8513  * set in DDB and we will wait for login response of boot targets during
8514  * probe.
8515  **/
8516 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
8517 {
8518         struct ddb_entry *ddb_entry;
8519         struct dev_db_entry *fw_ddb_entry = NULL;
8520         dma_addr_t fw_ddb_entry_dma;
8521         unsigned long wtime;
8522         uint32_t ddb_state;
8523         int max_ddbs, idx, ret;
8524
8525         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
8526                                      MAX_DEV_DB_ENTRIES;
8527
8528         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8529                                           &fw_ddb_entry_dma, GFP_KERNEL);
8530         if (!fw_ddb_entry) {
8531                 ql4_printk(KERN_ERR, ha,
8532                            "%s: Unable to allocate dma buffer\n", __func__);
8533                 goto exit_login_resp;
8534         }
8535
8536         wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
8537
8538         for (idx = 0; idx < max_ddbs; idx++) {
8539                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8540                 if (ddb_entry == NULL)
8541                         continue;
8542
8543                 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
8544                         DEBUG2(ql4_printk(KERN_INFO, ha,
8545                                           "%s: DDB index [%d]\n", __func__,
8546                                           ddb_entry->fw_ddb_index));
8547                         do {
8548                                 ret = qla4xxx_get_fwddb_entry(ha,
8549                                                 ddb_entry->fw_ddb_index,
8550                                                 fw_ddb_entry, fw_ddb_entry_dma,
8551                                                 NULL, NULL, &ddb_state, NULL,
8552                                                 NULL, NULL);
8553                                 if (ret == QLA_ERROR)
8554                                         goto exit_login_resp;
8555
8556                                 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
8557                                     (ddb_state == DDB_DS_SESSION_FAILED))
8558                                         break;
8559
8560                                 schedule_timeout_uninterruptible(HZ);
8561
8562                         } while ((time_after(wtime, jiffies)));
8563
8564                         if (!time_after(wtime, jiffies)) {
8565                                 DEBUG2(ql4_printk(KERN_INFO, ha,
8566                                                   "%s: Login response wait timer expired\n",
8567                                                   __func__));
8568                                  goto exit_login_resp;
8569                         }
8570                 }
8571         }
8572
8573 exit_login_resp:
8574         if (fw_ddb_entry)
8575                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8576                                   fw_ddb_entry, fw_ddb_entry_dma);
8577 }
8578
8579 /**
8580  * qla4xxx_probe_adapter - callback function to probe HBA
8581  * @pdev: pointer to pci_dev structure
8582  * @pci_device_id: pointer to pci_device entry
8583  *
8584  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
8585  * It returns zero if successful. It also initializes all data necessary for
8586  * the driver.
8587  **/
8588 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
8589                                  const struct pci_device_id *ent)
8590 {
8591         int ret = -ENODEV, status;
8592         struct Scsi_Host *host;
8593         struct scsi_qla_host *ha;
8594         uint8_t init_retry_count = 0;
8595         char buf[34];
8596         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
8597         uint32_t dev_state;
8598
8599         if (pci_enable_device(pdev))
8600                 return -1;
8601
8602         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
8603         if (host == NULL) {
8604                 printk(KERN_WARNING
8605                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
8606                 goto probe_disable_device;
8607         }
8608
8609         /* Clear our data area */
8610         ha = to_qla_host(host);
8611         memset(ha, 0, sizeof(*ha));
8612
8613         /* Save the information from PCI BIOS.  */
8614         ha->pdev = pdev;
8615         ha->host = host;
8616         ha->host_no = host->host_no;
8617         ha->func_num = PCI_FUNC(ha->pdev->devfn);
8618
8619         pci_enable_pcie_error_reporting(pdev);
8620
8621         /* Setup Runtime configurable options */
8622         if (is_qla8022(ha)) {
8623                 ha->isp_ops = &qla4_82xx_isp_ops;
8624                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
8625                 ha->qdr_sn_window = -1;
8626                 ha->ddr_mn_window = -1;
8627                 ha->curr_window = 255;
8628                 nx_legacy_intr = &legacy_intr[ha->func_num];
8629                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
8630                 ha->nx_legacy_intr.tgt_status_reg =
8631                         nx_legacy_intr->tgt_status_reg;
8632                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
8633                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
8634         } else if (is_qla8032(ha) || is_qla8042(ha)) {
8635                 ha->isp_ops = &qla4_83xx_isp_ops;
8636                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
8637         } else {
8638                 ha->isp_ops = &qla4xxx_isp_ops;
8639         }
8640
8641         if (is_qla80XX(ha)) {
8642                 rwlock_init(&ha->hw_lock);
8643                 ha->pf_bit = ha->func_num << 16;
8644                 /* Set EEH reset type to fundamental if required by hba */
8645                 pdev->needs_freset = 1;
8646         }
8647
8648         /* Configure PCI I/O space. */
8649         ret = ha->isp_ops->iospace_config(ha);
8650         if (ret)
8651                 goto probe_failed_ioconfig;
8652
8653         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
8654                    pdev->device, pdev->irq, ha->reg);
8655
8656         qla4xxx_config_dma_addressing(ha);
8657
8658         /* Initialize lists and spinlocks. */
8659         INIT_LIST_HEAD(&ha->free_srb_q);
8660
8661         mutex_init(&ha->mbox_sem);
8662         mutex_init(&ha->chap_sem);
8663         init_completion(&ha->mbx_intr_comp);
8664         init_completion(&ha->disable_acb_comp);
8665         init_completion(&ha->idc_comp);
8666         init_completion(&ha->link_up_comp);
8667
8668         spin_lock_init(&ha->hardware_lock);
8669         spin_lock_init(&ha->work_lock);
8670
8671         /* Initialize work list */
8672         INIT_LIST_HEAD(&ha->work_list);
8673
8674         /* Allocate dma buffers */
8675         if (qla4xxx_mem_alloc(ha)) {
8676                 ql4_printk(KERN_WARNING, ha,
8677                     "[ERROR] Failed to allocate memory for adapter\n");
8678
8679                 ret = -ENOMEM;
8680                 goto probe_failed;
8681         }
8682
8683         host->cmd_per_lun = 3;
8684         host->max_channel = 0;
8685         host->max_lun = MAX_LUNS - 1;
8686         host->max_id = MAX_TARGETS;
8687         host->max_cmd_len = IOCB_MAX_CDB_LEN;
8688         host->can_queue = MAX_SRBS ;
8689         host->transportt = qla4xxx_scsi_transport;
8690
8691         pci_set_drvdata(pdev, ha);
8692
8693         ret = scsi_add_host(host, &pdev->dev);
8694         if (ret)
8695                 goto probe_failed;
8696
8697         if (is_qla80XX(ha))
8698                 qla4_8xxx_get_flash_info(ha);
8699
8700         if (is_qla8032(ha) || is_qla8042(ha)) {
8701                 qla4_83xx_read_reset_template(ha);
8702                 /*
8703                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
8704                  * If DONRESET_BIT0 is set, drivers should not set dev_state
8705                  * to NEED_RESET. But if NEED_RESET is set, drivers should
8706                  * should honor the reset.
8707                  */
8708                 if (ql4xdontresethba == 1)
8709                         qla4_83xx_set_idc_dontreset(ha);
8710         }
8711
8712         /*
8713          * Initialize the Host adapter request/response queues and
8714          * firmware
8715          * NOTE: interrupts enabled upon successful completion
8716          */
8717         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8718
8719         /* Dont retry adapter initialization if IRQ allocation failed */
8720         if (is_qla80XX(ha) && (status == QLA_ERROR))
8721                 goto skip_retry_init;
8722
8723         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
8724             init_retry_count++ < MAX_INIT_RETRIES) {
8725
8726                 if (is_qla80XX(ha)) {
8727                         ha->isp_ops->idc_lock(ha);
8728                         dev_state = qla4_8xxx_rd_direct(ha,
8729                                                         QLA8XXX_CRB_DEV_STATE);
8730                         ha->isp_ops->idc_unlock(ha);
8731                         if (dev_state == QLA8XXX_DEV_FAILED) {
8732                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
8733                                     "initialize adapter. H/W is in failed state\n",
8734                                     __func__);
8735                                 break;
8736                         }
8737                 }
8738                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
8739                               "(%d)\n", __func__, init_retry_count));
8740
8741                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
8742                         continue;
8743
8744                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8745                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
8746                         if (qla4_8xxx_check_init_adapter_retry(ha) == QLA_ERROR)
8747                                 goto skip_retry_init;
8748                 }
8749         }
8750
8751 skip_retry_init:
8752         if (!test_bit(AF_ONLINE, &ha->flags)) {
8753                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
8754
8755                 if ((is_qla8022(ha) && ql4xdontresethba) ||
8756                     ((is_qla8032(ha) || is_qla8042(ha)) &&
8757                      qla4_83xx_idc_dontreset(ha))) {
8758                         /* Put the device in failed state. */
8759                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
8760                         ha->isp_ops->idc_lock(ha);
8761                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8762                                             QLA8XXX_DEV_FAILED);
8763                         ha->isp_ops->idc_unlock(ha);
8764                 }
8765                 ret = -ENODEV;
8766                 goto remove_host;
8767         }
8768
8769         /* Startup the kernel thread for this host adapter. */
8770         DEBUG2(printk("scsi: %s: Starting kernel thread for "
8771                       "qla4xxx_dpc\n", __func__));
8772         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
8773         ha->dpc_thread = create_singlethread_workqueue(buf);
8774         if (!ha->dpc_thread) {
8775                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
8776                 ret = -ENODEV;
8777                 goto remove_host;
8778         }
8779         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
8780
8781         ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
8782                                       ha->host_no);
8783         if (!ha->task_wq) {
8784                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
8785                 ret = -ENODEV;
8786                 goto remove_host;
8787         }
8788
8789         /*
8790          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
8791          * (which is called indirectly by qla4xxx_initialize_adapter),
8792          * so that irqs will be registered after crbinit but before
8793          * mbx_intr_enable.
8794          */
8795         if (is_qla40XX(ha)) {
8796                 ret = qla4xxx_request_irqs(ha);
8797                 if (ret) {
8798                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
8799                             "interrupt %d already in use.\n", pdev->irq);
8800                         goto remove_host;
8801                 }
8802         }
8803
8804         pci_save_state(ha->pdev);
8805         ha->isp_ops->enable_intrs(ha);
8806
8807         /* Start timer thread. */
8808         qla4xxx_start_timer(ha, 1);
8809
8810         set_bit(AF_INIT_DONE, &ha->flags);
8811
8812         qla4_8xxx_alloc_sysfs_attr(ha);
8813
8814         printk(KERN_INFO
8815                " QLogic iSCSI HBA Driver version: %s\n"
8816                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
8817                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
8818                ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
8819                ha->fw_info.fw_patch, ha->fw_info.fw_build);
8820
8821         /* Set the driver version */
8822         if (is_qla80XX(ha))
8823                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
8824
8825         if (qla4xxx_setup_boot_info(ha))
8826                 ql4_printk(KERN_ERR, ha,
8827                            "%s: No iSCSI boot target configured\n", __func__);
8828
8829         set_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags);
8830         /* Perform the build ddb list and login to each */
8831         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
8832         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
8833         qla4xxx_wait_login_resp_boot_tgt(ha);
8834
8835         qla4xxx_create_chap_list(ha);
8836
8837         qla4xxx_create_ifaces(ha);
8838         return 0;
8839
8840 remove_host:
8841         scsi_remove_host(ha->host);
8842
8843 probe_failed:
8844         qla4xxx_free_adapter(ha);
8845
8846 probe_failed_ioconfig:
8847         pci_disable_pcie_error_reporting(pdev);
8848         scsi_host_put(ha->host);
8849
8850 probe_disable_device:
8851         pci_disable_device(pdev);
8852
8853         return ret;
8854 }
8855
8856 /**
8857  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
8858  * @ha: pointer to adapter structure
8859  *
8860  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
8861  * so that the other port will not re-initialize while in the process of
8862  * removing the ha due to driver unload or hba hotplug.
8863  **/
8864 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
8865 {
8866         struct scsi_qla_host *other_ha = NULL;
8867         struct pci_dev *other_pdev = NULL;
8868         int fn = ISP4XXX_PCI_FN_2;
8869
8870         /*iscsi function numbers for ISP4xxx is 1 and 3*/
8871         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
8872                 fn = ISP4XXX_PCI_FN_1;
8873
8874         other_pdev =
8875                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8876                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8877                 fn));
8878
8879         /* Get other_ha if other_pdev is valid and state is enable*/
8880         if (other_pdev) {
8881                 if (atomic_read(&other_pdev->enable_cnt)) {
8882                         other_ha = pci_get_drvdata(other_pdev);
8883                         if (other_ha) {
8884                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
8885                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
8886                                     "Prevent %s reinit\n", __func__,
8887                                     dev_name(&other_ha->pdev->dev)));
8888                         }
8889                 }
8890                 pci_dev_put(other_pdev);
8891         }
8892 }
8893
8894 static void qla4xxx_destroy_ddb(struct scsi_qla_host *ha,
8895                 struct ddb_entry *ddb_entry)
8896 {
8897         struct dev_db_entry *fw_ddb_entry = NULL;
8898         dma_addr_t fw_ddb_entry_dma;
8899         unsigned long wtime;
8900         uint32_t ddb_state;
8901         int options;
8902         int status;
8903
8904         options = LOGOUT_OPTION_CLOSE_SESSION;
8905         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
8906                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
8907                 goto clear_ddb;
8908         }
8909
8910         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8911                                           &fw_ddb_entry_dma, GFP_KERNEL);
8912         if (!fw_ddb_entry) {
8913                 ql4_printk(KERN_ERR, ha,
8914                            "%s: Unable to allocate dma buffer\n", __func__);
8915                 goto clear_ddb;
8916         }
8917
8918         wtime = jiffies + (HZ * LOGOUT_TOV);
8919         do {
8920                 status = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
8921                                                  fw_ddb_entry, fw_ddb_entry_dma,
8922                                                  NULL, NULL, &ddb_state, NULL,
8923                                                  NULL, NULL);
8924                 if (status == QLA_ERROR)
8925                         goto free_ddb;
8926
8927                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
8928                     (ddb_state == DDB_DS_SESSION_FAILED))
8929                         goto free_ddb;
8930
8931                 schedule_timeout_uninterruptible(HZ);
8932         } while ((time_after(wtime, jiffies)));
8933
8934 free_ddb:
8935         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8936                           fw_ddb_entry, fw_ddb_entry_dma);
8937 clear_ddb:
8938         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
8939 }
8940
8941 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
8942 {
8943         struct ddb_entry *ddb_entry;
8944         int idx;
8945
8946         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
8947
8948                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8949                 if ((ddb_entry != NULL) &&
8950                     (ddb_entry->ddb_type == FLASH_DDB)) {
8951
8952                         qla4xxx_destroy_ddb(ha, ddb_entry);
8953                         /*
8954                          * we have decremented the reference count of the driver
8955                          * when we setup the session to have the driver unload
8956                          * to be seamless without actually destroying the
8957                          * session
8958                          **/
8959                         try_module_get(qla4xxx_iscsi_transport.owner);
8960                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
8961                         qla4xxx_free_ddb(ha, ddb_entry);
8962                         iscsi_session_teardown(ddb_entry->sess);
8963                 }
8964         }
8965 }
8966 /**
8967  * qla4xxx_remove_adapter - callback function to remove adapter.
8968  * @pci_dev: PCI device pointer
8969  **/
8970 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
8971 {
8972         struct scsi_qla_host *ha;
8973
8974         /*
8975          * If the PCI device is disabled then it means probe_adapter had
8976          * failed and resources already cleaned up on probe_adapter exit.
8977          */
8978         if (!pci_is_enabled(pdev))
8979                 return;
8980
8981         ha = pci_get_drvdata(pdev);
8982
8983         if (is_qla40XX(ha))
8984                 qla4xxx_prevent_other_port_reinit(ha);
8985
8986         /* destroy iface from sysfs */
8987         qla4xxx_destroy_ifaces(ha);
8988
8989         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
8990                 iscsi_boot_destroy_kset(ha->boot_kset);
8991
8992         qla4xxx_destroy_fw_ddb_session(ha);
8993         qla4_8xxx_free_sysfs_attr(ha);
8994
8995         qla4xxx_sysfs_ddb_remove(ha);
8996         scsi_remove_host(ha->host);
8997
8998         qla4xxx_free_adapter(ha);
8999
9000         scsi_host_put(ha->host);
9001
9002         pci_disable_pcie_error_reporting(pdev);
9003         pci_disable_device(pdev);
9004 }
9005
9006 /**
9007  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
9008  * @ha: HA context
9009  *
9010  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
9011  * supported addressing method.
9012  */
9013 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
9014 {
9015         int retval;
9016
9017         /* Update our PCI device dma_mask for full 64 bit mask */
9018         if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
9019                 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
9020                         dev_dbg(&ha->pdev->dev,
9021                                   "Failed to set 64 bit PCI consistent mask; "
9022                                    "using 32 bit.\n");
9023                         retval = pci_set_consistent_dma_mask(ha->pdev,
9024                                                              DMA_BIT_MASK(32));
9025                 }
9026         } else
9027                 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
9028 }
9029
9030 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
9031 {
9032         struct iscsi_cls_session *cls_sess;
9033         struct iscsi_session *sess;
9034         struct ddb_entry *ddb;
9035         int queue_depth = QL4_DEF_QDEPTH;
9036
9037         cls_sess = starget_to_session(sdev->sdev_target);
9038         sess = cls_sess->dd_data;
9039         ddb = sess->dd_data;
9040
9041         sdev->hostdata = ddb;
9042
9043         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
9044                 queue_depth = ql4xmaxqdepth;
9045
9046         scsi_change_queue_depth(sdev, queue_depth);
9047         return 0;
9048 }
9049
9050 /**
9051  * qla4xxx_del_from_active_array - returns an active srb
9052  * @ha: Pointer to host adapter structure.
9053  * @index: index into the active_array
9054  *
9055  * This routine removes and returns the srb at the specified index
9056  **/
9057 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
9058     uint32_t index)
9059 {
9060         struct srb *srb = NULL;
9061         struct scsi_cmnd *cmd = NULL;
9062
9063         cmd = scsi_host_find_tag(ha->host, index);
9064         if (!cmd)
9065                 return srb;
9066
9067         srb = (struct srb *)CMD_SP(cmd);
9068         if (!srb)
9069                 return srb;
9070
9071         /* update counters */
9072         if (srb->flags & SRB_DMA_VALID) {
9073                 ha->iocb_cnt -= srb->iocb_cnt;
9074                 if (srb->cmd)
9075                         srb->cmd->host_scribble =
9076                                 (unsigned char *)(unsigned long) MAX_SRBS;
9077         }
9078         return srb;
9079 }
9080
9081 /**
9082  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
9083  * @ha: Pointer to host adapter structure.
9084  * @cmd: Scsi Command to wait on.
9085  *
9086  * This routine waits for the command to be returned by the Firmware
9087  * for some max time.
9088  **/
9089 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
9090                                       struct scsi_cmnd *cmd)
9091 {
9092         int done = 0;
9093         struct srb *rp;
9094         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
9095         int ret = SUCCESS;
9096
9097         /* Dont wait on command if PCI error is being handled
9098          * by PCI AER driver
9099          */
9100         if (unlikely(pci_channel_offline(ha->pdev)) ||
9101             (test_bit(AF_EEH_BUSY, &ha->flags))) {
9102                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
9103                     ha->host_no, __func__);
9104                 return ret;
9105         }
9106
9107         do {
9108                 /* Checking to see if its returned to OS */
9109                 rp = (struct srb *) CMD_SP(cmd);
9110                 if (rp == NULL) {
9111                         done++;
9112                         break;
9113                 }
9114
9115                 msleep(2000);
9116         } while (max_wait_time--);
9117
9118         return done;
9119 }
9120
9121 /**
9122  * qla4xxx_wait_for_hba_online - waits for HBA to come online
9123  * @ha: Pointer to host adapter structure
9124  **/
9125 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
9126 {
9127         unsigned long wait_online;
9128
9129         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
9130         while (time_before(jiffies, wait_online)) {
9131
9132                 if (adapter_up(ha))
9133                         return QLA_SUCCESS;
9134
9135                 msleep(2000);
9136         }
9137
9138         return QLA_ERROR;
9139 }
9140
9141 /**
9142  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
9143  * @ha: pointer to HBA
9144  * @t: target id
9145  * @l: lun id
9146  *
9147  * This function waits for all outstanding commands to a lun to complete. It
9148  * returns 0 if all pending commands are returned and 1 otherwise.
9149  **/
9150 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
9151                                         struct scsi_target *stgt,
9152                                         struct scsi_device *sdev)
9153 {
9154         int cnt;
9155         int status = 0;
9156         struct scsi_cmnd *cmd;
9157
9158         /*
9159          * Waiting for all commands for the designated target or dev
9160          * in the active array
9161          */
9162         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
9163                 cmd = scsi_host_find_tag(ha->host, cnt);
9164                 if (cmd && stgt == scsi_target(cmd->device) &&
9165                     (!sdev || sdev == cmd->device)) {
9166                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9167                                 status++;
9168                                 break;
9169                         }
9170                 }
9171         }
9172         return status;
9173 }
9174
9175 /**
9176  * qla4xxx_eh_abort - callback for abort task.
9177  * @cmd: Pointer to Linux's SCSI command structure
9178  *
9179  * This routine is called by the Linux OS to abort the specified
9180  * command.
9181  **/
9182 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
9183 {
9184         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9185         unsigned int id = cmd->device->id;
9186         uint64_t lun = cmd->device->lun;
9187         unsigned long flags;
9188         struct srb *srb = NULL;
9189         int ret = SUCCESS;
9190         int wait = 0;
9191
9192         ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Abort command issued cmd=%p, cdb=0x%x\n",
9193                    ha->host_no, id, lun, cmd, cmd->cmnd[0]);
9194
9195         spin_lock_irqsave(&ha->hardware_lock, flags);
9196         srb = (struct srb *) CMD_SP(cmd);
9197         if (!srb) {
9198                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
9199                 ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Specified command has already completed.\n",
9200                            ha->host_no, id, lun);
9201                 return SUCCESS;
9202         }
9203         kref_get(&srb->srb_ref);
9204         spin_unlock_irqrestore(&ha->hardware_lock, flags);
9205
9206         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
9207                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx failed.\n",
9208                     ha->host_no, id, lun));
9209                 ret = FAILED;
9210         } else {
9211                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx success.\n",
9212                     ha->host_no, id, lun));
9213                 wait = 1;
9214         }
9215
9216         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
9217
9218         /* Wait for command to complete */
9219         if (wait) {
9220                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9221                         DEBUG2(printk("scsi%ld:%d:%llu: Abort handler timed out\n",
9222                             ha->host_no, id, lun));
9223                         ret = FAILED;
9224                 }
9225         }
9226
9227         ql4_printk(KERN_INFO, ha,
9228             "scsi%ld:%d:%llu: Abort command - %s\n",
9229             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
9230
9231         return ret;
9232 }
9233
9234 /**
9235  * qla4xxx_eh_device_reset - callback for target reset.
9236  * @cmd: Pointer to Linux's SCSI command structure
9237  *
9238  * This routine is called by the Linux OS to reset all luns on the
9239  * specified target.
9240  **/
9241 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
9242 {
9243         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9244         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9245         int ret = FAILED, stat;
9246
9247         if (!ddb_entry)
9248                 return ret;
9249
9250         ret = iscsi_block_scsi_eh(cmd);
9251         if (ret)
9252                 return ret;
9253         ret = FAILED;
9254
9255         ql4_printk(KERN_INFO, ha,
9256                    "scsi%ld:%d:%d:%llu: DEVICE RESET ISSUED.\n", ha->host_no,
9257                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9258
9259         DEBUG2(printk(KERN_INFO
9260                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
9261                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
9262                       cmd, jiffies, cmd->request->timeout / HZ,
9263                       ha->dpc_flags, cmd->result, cmd->allowed));
9264
9265         /* FIXME: wait for hba to go online */
9266         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
9267         if (stat != QLA_SUCCESS) {
9268                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
9269                 goto eh_dev_reset_done;
9270         }
9271
9272         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9273                                          cmd->device)) {
9274                 ql4_printk(KERN_INFO, ha,
9275                            "DEVICE RESET FAILED - waiting for "
9276                            "commands.\n");
9277                 goto eh_dev_reset_done;
9278         }
9279
9280         /* Send marker. */
9281         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9282                 MM_LUN_RESET) != QLA_SUCCESS)
9283                 goto eh_dev_reset_done;
9284
9285         ql4_printk(KERN_INFO, ha,
9286                    "scsi(%ld:%d:%d:%llu): DEVICE RESET SUCCEEDED.\n",
9287                    ha->host_no, cmd->device->channel, cmd->device->id,
9288                    cmd->device->lun);
9289
9290         ret = SUCCESS;
9291
9292 eh_dev_reset_done:
9293
9294         return ret;
9295 }
9296
9297 /**
9298  * qla4xxx_eh_target_reset - callback for target reset.
9299  * @cmd: Pointer to Linux's SCSI command structure
9300  *
9301  * This routine is called by the Linux OS to reset the target.
9302  **/
9303 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
9304 {
9305         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9306         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9307         int stat, ret;
9308
9309         if (!ddb_entry)
9310                 return FAILED;
9311
9312         ret = iscsi_block_scsi_eh(cmd);
9313         if (ret)
9314                 return ret;
9315
9316         starget_printk(KERN_INFO, scsi_target(cmd->device),
9317                        "WARM TARGET RESET ISSUED.\n");
9318
9319         DEBUG2(printk(KERN_INFO
9320                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
9321                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
9322                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
9323                       ha->dpc_flags, cmd->result, cmd->allowed));
9324
9325         stat = qla4xxx_reset_target(ha, ddb_entry);
9326         if (stat != QLA_SUCCESS) {
9327                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9328                                "WARM TARGET RESET FAILED.\n");
9329                 return FAILED;
9330         }
9331
9332         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9333                                          NULL)) {
9334                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9335                                "WARM TARGET DEVICE RESET FAILED - "
9336                                "waiting for commands.\n");
9337                 return FAILED;
9338         }
9339
9340         /* Send marker. */
9341         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9342                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
9343                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9344                                "WARM TARGET DEVICE RESET FAILED - "
9345                                "marker iocb failed.\n");
9346                 return FAILED;
9347         }
9348
9349         starget_printk(KERN_INFO, scsi_target(cmd->device),
9350                        "WARM TARGET RESET SUCCEEDED.\n");
9351         return SUCCESS;
9352 }
9353
9354 /**
9355  * qla4xxx_is_eh_active - check if error handler is running
9356  * @shost: Pointer to SCSI Host struct
9357  *
9358  * This routine finds that if reset host is called in EH
9359  * scenario or from some application like sg_reset
9360  **/
9361 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
9362 {
9363         if (shost->shost_state == SHOST_RECOVERY)
9364                 return 1;
9365         return 0;
9366 }
9367
9368 /**
9369  * qla4xxx_eh_host_reset - kernel callback
9370  * @cmd: Pointer to Linux's SCSI command structure
9371  *
9372  * This routine is invoked by the Linux kernel to perform fatal error
9373  * recovery on the specified adapter.
9374  **/
9375 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
9376 {
9377         int return_status = FAILED;
9378         struct scsi_qla_host *ha;
9379
9380         ha = to_qla_host(cmd->device->host);
9381
9382         if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
9383                 qla4_83xx_set_idc_dontreset(ha);
9384
9385         /*
9386          * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
9387          * protocol drivers, we should not set device_state to NEED_RESET
9388          */
9389         if (ql4xdontresethba ||
9390             ((is_qla8032(ha) || is_qla8042(ha)) &&
9391              qla4_83xx_idc_dontreset(ha))) {
9392                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
9393                      ha->host_no, __func__));
9394
9395                 /* Clear outstanding srb in queues */
9396                 if (qla4xxx_is_eh_active(cmd->device->host))
9397                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
9398
9399                 return FAILED;
9400         }
9401
9402         ql4_printk(KERN_INFO, ha,
9403                    "scsi(%ld:%d:%d:%llu): HOST RESET ISSUED.\n", ha->host_no,
9404                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9405
9406         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
9407                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
9408                               "DEAD.\n", ha->host_no, cmd->device->channel,
9409                               __func__));
9410
9411                 return FAILED;
9412         }
9413
9414         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9415                 if (is_qla80XX(ha))
9416                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
9417                 else
9418                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
9419         }
9420
9421         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
9422                 return_status = SUCCESS;
9423
9424         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
9425                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
9426
9427         return return_status;
9428 }
9429
9430 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
9431 {
9432         uint32_t mbox_cmd[MBOX_REG_COUNT];
9433         uint32_t mbox_sts[MBOX_REG_COUNT];
9434         struct addr_ctrl_blk_def *acb = NULL;
9435         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
9436         int rval = QLA_SUCCESS;
9437         dma_addr_t acb_dma;
9438
9439         acb = dma_alloc_coherent(&ha->pdev->dev,
9440                                  sizeof(struct addr_ctrl_blk_def),
9441                                  &acb_dma, GFP_KERNEL);
9442         if (!acb) {
9443                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
9444                            __func__);
9445                 rval = -ENOMEM;
9446                 goto exit_port_reset;
9447         }
9448
9449         memset(acb, 0, acb_len);
9450
9451         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
9452         if (rval != QLA_SUCCESS) {
9453                 rval = -EIO;
9454                 goto exit_free_acb;
9455         }
9456
9457         rval = qla4xxx_disable_acb(ha);
9458         if (rval != QLA_SUCCESS) {
9459                 rval = -EIO;
9460                 goto exit_free_acb;
9461         }
9462
9463         wait_for_completion_timeout(&ha->disable_acb_comp,
9464                                     DISABLE_ACB_TOV * HZ);
9465
9466         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
9467         if (rval != QLA_SUCCESS) {
9468                 rval = -EIO;
9469                 goto exit_free_acb;
9470         }
9471
9472 exit_free_acb:
9473         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
9474                           acb, acb_dma);
9475 exit_port_reset:
9476         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
9477                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
9478         return rval;
9479 }
9480
9481 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
9482 {
9483         struct scsi_qla_host *ha = to_qla_host(shost);
9484         int rval = QLA_SUCCESS;
9485         uint32_t idc_ctrl;
9486
9487         if (ql4xdontresethba) {
9488                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
9489                                   __func__));
9490                 rval = -EPERM;
9491                 goto exit_host_reset;
9492         }
9493
9494         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
9495                 goto recover_adapter;
9496
9497         switch (reset_type) {
9498         case SCSI_ADAPTER_RESET:
9499                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
9500                 break;
9501         case SCSI_FIRMWARE_RESET:
9502                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9503                         if (is_qla80XX(ha))
9504                                 /* set firmware context reset */
9505                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
9506                                         &ha->dpc_flags);
9507                         else {
9508                                 rval = qla4xxx_context_reset(ha);
9509                                 goto exit_host_reset;
9510                         }
9511                 }
9512                 break;
9513         }
9514
9515 recover_adapter:
9516         /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
9517          * reset is issued by application */
9518         if ((is_qla8032(ha) || is_qla8042(ha)) &&
9519             test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9520                 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
9521                 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
9522                                  (idc_ctrl | GRACEFUL_RESET_BIT1));
9523         }
9524
9525         rval = qla4xxx_recover_adapter(ha);
9526         if (rval != QLA_SUCCESS) {
9527                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
9528                                   __func__));
9529                 rval = -EIO;
9530         }
9531
9532 exit_host_reset:
9533         return rval;
9534 }
9535
9536 /* PCI AER driver recovers from all correctable errors w/o
9537  * driver intervention. For uncorrectable errors PCI AER
9538  * driver calls the following device driver's callbacks
9539  *
9540  * - Fatal Errors - link_reset
9541  * - Non-Fatal Errors - driver's error_detected() which
9542  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
9543  *
9544  * PCI AER driver calls
9545  * CAN_RECOVER - driver's mmio_enabled(), mmio_enabled()
9546  *               returns RECOVERED or NEED_RESET if fw_hung
9547  * NEED_RESET - driver's slot_reset()
9548  * DISCONNECT - device is dead & cannot recover
9549  * RECOVERED - driver's resume()
9550  */
9551 static pci_ers_result_t
9552 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9553 {
9554         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9555
9556         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
9557             ha->host_no, __func__, state);
9558
9559         if (!is_aer_supported(ha))
9560                 return PCI_ERS_RESULT_NONE;
9561
9562         switch (state) {
9563         case pci_channel_io_normal:
9564                 clear_bit(AF_EEH_BUSY, &ha->flags);
9565                 return PCI_ERS_RESULT_CAN_RECOVER;
9566         case pci_channel_io_frozen:
9567                 set_bit(AF_EEH_BUSY, &ha->flags);
9568                 qla4xxx_mailbox_premature_completion(ha);
9569                 qla4xxx_free_irqs(ha);
9570                 pci_disable_device(pdev);
9571                 /* Return back all IOs */
9572                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
9573                 return PCI_ERS_RESULT_NEED_RESET;
9574         case pci_channel_io_perm_failure:
9575                 set_bit(AF_EEH_BUSY, &ha->flags);
9576                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
9577                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
9578                 return PCI_ERS_RESULT_DISCONNECT;
9579         }
9580         return PCI_ERS_RESULT_NEED_RESET;
9581 }
9582
9583 /**
9584  * qla4xxx_pci_mmio_enabled() gets called if
9585  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
9586  * and read/write to the device still works.
9587  **/
9588 static pci_ers_result_t
9589 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
9590 {
9591         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9592
9593         if (!is_aer_supported(ha))
9594                 return PCI_ERS_RESULT_NONE;
9595
9596         return PCI_ERS_RESULT_RECOVERED;
9597 }
9598
9599 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
9600 {
9601         uint32_t rval = QLA_ERROR;
9602         int fn;
9603         struct pci_dev *other_pdev = NULL;
9604
9605         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
9606
9607         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9608
9609         if (test_bit(AF_ONLINE, &ha->flags)) {
9610                 clear_bit(AF_ONLINE, &ha->flags);
9611                 clear_bit(AF_LINK_UP, &ha->flags);
9612                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
9613                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
9614         }
9615
9616         fn = PCI_FUNC(ha->pdev->devfn);
9617         if (is_qla8022(ha)) {
9618                 while (fn > 0) {
9619                         fn--;
9620                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at func %x\n",
9621                                    ha->host_no, __func__, fn);
9622                         /* Get the pci device given the domain, bus,
9623                          * slot/function number */
9624                         other_pdev = pci_get_domain_bus_and_slot(
9625                                            pci_domain_nr(ha->pdev->bus),
9626                                            ha->pdev->bus->number,
9627                                            PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
9628                                            fn));
9629
9630                         if (!other_pdev)
9631                                 continue;
9632
9633                         if (atomic_read(&other_pdev->enable_cnt)) {
9634                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI func in enabled state%x\n",
9635                                            ha->host_no, __func__, fn);
9636                                 pci_dev_put(other_pdev);
9637                                 break;
9638                         }
9639                         pci_dev_put(other_pdev);
9640                 }
9641         } else {
9642                 /* this case is meant for ISP83xx/ISP84xx only */
9643                 if (qla4_83xx_can_perform_reset(ha)) {
9644                         /* reset fn as iSCSI is going to perform the reset */
9645                         fn = 0;
9646                 }
9647         }
9648
9649         /* The first function on the card, the reset owner will
9650          * start & initialize the firmware. The other functions
9651          * on the card will reset the firmware context
9652          */
9653         if (!fn) {
9654                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
9655                     "0x%x is the owner\n", ha->host_no, __func__,
9656                     ha->pdev->devfn);
9657
9658                 ha->isp_ops->idc_lock(ha);
9659                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9660                                     QLA8XXX_DEV_COLD);
9661                 ha->isp_ops->idc_unlock(ha);
9662
9663                 rval = qla4_8xxx_update_idc_reg(ha);
9664                 if (rval == QLA_ERROR) {
9665                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
9666                                    ha->host_no, __func__);
9667                         ha->isp_ops->idc_lock(ha);
9668                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9669                                             QLA8XXX_DEV_FAILED);
9670                         ha->isp_ops->idc_unlock(ha);
9671                         goto exit_error_recovery;
9672                 }
9673
9674                 clear_bit(AF_FW_RECOVERY, &ha->flags);
9675                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9676
9677                 if (rval != QLA_SUCCESS) {
9678                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9679                             "FAILED\n", ha->host_no, __func__);
9680                         qla4xxx_free_irqs(ha);
9681                         ha->isp_ops->idc_lock(ha);
9682                         qla4_8xxx_clear_drv_active(ha);
9683                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9684                                             QLA8XXX_DEV_FAILED);
9685                         ha->isp_ops->idc_unlock(ha);
9686                 } else {
9687                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9688                             "READY\n", ha->host_no, __func__);
9689                         ha->isp_ops->idc_lock(ha);
9690                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9691                                             QLA8XXX_DEV_READY);
9692                         /* Clear driver state register */
9693                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
9694                         qla4_8xxx_set_drv_active(ha);
9695                         ha->isp_ops->idc_unlock(ha);
9696                         ha->isp_ops->enable_intrs(ha);
9697                 }
9698         } else {
9699                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
9700                     "the reset owner\n", ha->host_no, __func__,
9701                     ha->pdev->devfn);
9702                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
9703                      QLA8XXX_DEV_READY)) {
9704                         clear_bit(AF_FW_RECOVERY, &ha->flags);
9705                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9706                         if (rval == QLA_SUCCESS)
9707                                 ha->isp_ops->enable_intrs(ha);
9708                         else
9709                                 qla4xxx_free_irqs(ha);
9710
9711                         ha->isp_ops->idc_lock(ha);
9712                         qla4_8xxx_set_drv_active(ha);
9713                         ha->isp_ops->idc_unlock(ha);
9714                 }
9715         }
9716 exit_error_recovery:
9717         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9718         return rval;
9719 }
9720
9721 static pci_ers_result_t
9722 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
9723 {
9724         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
9725         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9726         int rc;
9727
9728         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
9729             ha->host_no, __func__);
9730
9731         if (!is_aer_supported(ha))
9732                 return PCI_ERS_RESULT_NONE;
9733
9734         /* Restore the saved state of PCIe device -
9735          * BAR registers, PCI Config space, PCIX, MSI,
9736          * IOV states
9737          */
9738         pci_restore_state(pdev);
9739
9740         /* pci_restore_state() clears the saved_state flag of the device
9741          * save restored state which resets saved_state flag
9742          */
9743         pci_save_state(pdev);
9744
9745         /* Initialize device or resume if in suspended state */
9746         rc = pci_enable_device(pdev);
9747         if (rc) {
9748                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
9749                     "device after reset\n", ha->host_no, __func__);
9750                 goto exit_slot_reset;
9751         }
9752
9753         ha->isp_ops->disable_intrs(ha);
9754
9755         if (is_qla80XX(ha)) {
9756                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
9757                         ret = PCI_ERS_RESULT_RECOVERED;
9758                         goto exit_slot_reset;
9759                 } else
9760                         goto exit_slot_reset;
9761         }
9762
9763 exit_slot_reset:
9764         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
9765             "device after reset\n", ha->host_no, __func__, ret);
9766         return ret;
9767 }
9768
9769 static void
9770 qla4xxx_pci_resume(struct pci_dev *pdev)
9771 {
9772         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9773         int ret;
9774
9775         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
9776             ha->host_no, __func__);
9777
9778         ret = qla4xxx_wait_for_hba_online(ha);
9779         if (ret != QLA_SUCCESS) {
9780                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
9781                     "resume I/O from slot/link_reset\n", ha->host_no,
9782                      __func__);
9783         }
9784
9785         pci_cleanup_aer_uncorrect_error_status(pdev);
9786         clear_bit(AF_EEH_BUSY, &ha->flags);
9787 }
9788
9789 static const struct pci_error_handlers qla4xxx_err_handler = {
9790         .error_detected = qla4xxx_pci_error_detected,
9791         .mmio_enabled = qla4xxx_pci_mmio_enabled,
9792         .slot_reset = qla4xxx_pci_slot_reset,
9793         .resume = qla4xxx_pci_resume,
9794 };
9795
9796 static struct pci_device_id qla4xxx_pci_tbl[] = {
9797         {
9798                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9799                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
9800                 .subvendor      = PCI_ANY_ID,
9801                 .subdevice      = PCI_ANY_ID,
9802         },
9803         {
9804                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9805                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
9806                 .subvendor      = PCI_ANY_ID,
9807                 .subdevice      = PCI_ANY_ID,
9808         },
9809         {
9810                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9811                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
9812                 .subvendor      = PCI_ANY_ID,
9813                 .subdevice      = PCI_ANY_ID,
9814         },
9815         {
9816                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9817                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
9818                 .subvendor      = PCI_ANY_ID,
9819                 .subdevice      = PCI_ANY_ID,
9820         },
9821         {
9822                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9823                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
9824                 .subvendor      = PCI_ANY_ID,
9825                 .subdevice      = PCI_ANY_ID,
9826         },
9827         {
9828                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9829                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8042,
9830                 .subvendor      = PCI_ANY_ID,
9831                 .subdevice      = PCI_ANY_ID,
9832         },
9833         {0, 0},
9834 };
9835 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
9836
9837 static struct pci_driver qla4xxx_pci_driver = {
9838         .name           = DRIVER_NAME,
9839         .id_table       = qla4xxx_pci_tbl,
9840         .probe          = qla4xxx_probe_adapter,
9841         .remove         = qla4xxx_remove_adapter,
9842         .err_handler = &qla4xxx_err_handler,
9843 };
9844
9845 static int __init qla4xxx_module_init(void)
9846 {
9847         int ret;
9848
9849         if (ql4xqfulltracking)
9850                 qla4xxx_driver_template.track_queue_depth = 1;
9851
9852         /* Allocate cache for SRBs. */
9853         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
9854                                        SLAB_HWCACHE_ALIGN, NULL);
9855         if (srb_cachep == NULL) {
9856                 printk(KERN_ERR
9857                        "%s: Unable to allocate SRB cache..."
9858                        "Failing load!\n", DRIVER_NAME);
9859                 ret = -ENOMEM;
9860                 goto no_srp_cache;
9861         }
9862
9863         /* Derive version string. */
9864         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
9865         if (ql4xextended_error_logging)
9866                 strcat(qla4xxx_version_str, "-debug");
9867
9868         qla4xxx_scsi_transport =
9869                 iscsi_register_transport(&qla4xxx_iscsi_transport);
9870         if (!qla4xxx_scsi_transport){
9871                 ret = -ENODEV;
9872                 goto release_srb_cache;
9873         }
9874
9875         ret = pci_register_driver(&qla4xxx_pci_driver);
9876         if (ret)
9877                 goto unregister_transport;
9878
9879         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
9880         return 0;
9881
9882 unregister_transport:
9883         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9884 release_srb_cache:
9885         kmem_cache_destroy(srb_cachep);
9886 no_srp_cache:
9887         return ret;
9888 }
9889
9890 static void __exit qla4xxx_module_exit(void)
9891 {
9892         pci_unregister_driver(&qla4xxx_pci_driver);
9893         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9894         kmem_cache_destroy(srb_cachep);
9895 }
9896
9897 module_init(qla4xxx_module_init);
9898 module_exit(qla4xxx_module_exit);
9899
9900 MODULE_AUTHOR("QLogic Corporation");
9901 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
9902 MODULE_LICENSE("GPL");
9903 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);