drivers/scsi/qla4xxx/ql4_os.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2012 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 = 0x1F;
  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 0x1F.\n"
  91                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F");
  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
 153 /*
 154  * SCSI host template entry points
 155  */
 156 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 157 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 158 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 159 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 160 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 161 static int qla4xxx_slave_alloc(struct scsi_device *device);
 162 static int qla4xxx_slave_configure(struct scsi_device *device);
 163 static void qla4xxx_slave_destroy(struct scsi_device *sdev);
 164 static umode_t qla4_attr_is_visible(int param_type, int param);
 165 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 166 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
 167                                       int reason);
 168
 169 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 170     QLA82XX_LEGACY_INTR_CONFIG;
 171
 172 static struct scsi_host_template qla4xxx_driver_template = {
 173         .module                 = THIS_MODULE,
 174         .name                   = DRIVER_NAME,
 175         .proc_name              = DRIVER_NAME,
 176         .queuecommand           = qla4xxx_queuecommand,
 177
 178         .eh_abort_handler       = qla4xxx_eh_abort,
 179         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 180         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 181         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 182         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 183
 184         .slave_configure        = qla4xxx_slave_configure,
 185         .slave_alloc            = qla4xxx_slave_alloc,
 186         .slave_destroy          = qla4xxx_slave_destroy,
 187         .change_queue_depth     = qla4xxx_change_queue_depth,
 188
 189         .this_id                = -1,
 190         .cmd_per_lun            = 3,
 191         .use_clustering         = ENABLE_CLUSTERING,
 192         .sg_tablesize           = SG_ALL,
 193
 194         .max_sectors            = 0xFFFF,
 195         .shost_attrs            = qla4xxx_host_attrs,
 196         .host_reset             = qla4xxx_host_reset,
 197         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 198 };
 199
 200 static struct iscsi_transport qla4xxx_iscsi_transport = {
 201         .owner                  = THIS_MODULE,
 202         .name                   = DRIVER_NAME,
 203         .caps                   = CAP_TEXT_NEGO |
 204                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 205                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 206                                   CAP_MULTI_R2T,
 207         .attr_is_visible        = qla4_attr_is_visible,
 208         .create_session         = qla4xxx_session_create,
 209         .destroy_session        = qla4xxx_session_destroy,
 210         .start_conn             = qla4xxx_conn_start,
 211         .create_conn            = qla4xxx_conn_create,
 212         .bind_conn              = qla4xxx_conn_bind,
 213         .stop_conn              = iscsi_conn_stop,
 214         .destroy_conn           = qla4xxx_conn_destroy,
 215         .set_param              = iscsi_set_param,
 216         .get_conn_param         = qla4xxx_conn_get_param,
 217         .get_session_param      = qla4xxx_session_get_param,
 218         .get_ep_param           = qla4xxx_get_ep_param,
 219         .ep_connect             = qla4xxx_ep_connect,
 220         .ep_poll                = qla4xxx_ep_poll,
 221         .ep_disconnect          = qla4xxx_ep_disconnect,
 222         .get_stats              = qla4xxx_conn_get_stats,
 223         .send_pdu               = iscsi_conn_send_pdu,
 224         .xmit_task              = qla4xxx_task_xmit,
 225         .cleanup_task           = qla4xxx_task_cleanup,
 226         .alloc_pdu              = qla4xxx_alloc_pdu,
 227
 228         .get_host_param         = qla4xxx_host_get_param,
 229         .set_iface_param        = qla4xxx_iface_set_param,
 230         .get_iface_param        = qla4xxx_get_iface_param,
 231         .bsg_request            = qla4xxx_bsg_request,
 232         .send_ping              = qla4xxx_send_ping,
 233         .get_chap               = qla4xxx_get_chap_list,
 234         .delete_chap            = qla4xxx_delete_chap,
 235 };
 236
 237 static struct scsi_transport_template *qla4xxx_scsi_transport;
 238
 239 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 240                              uint32_t iface_type, uint32_t payload_size,
 241                              uint32_t pid, struct sockaddr *dst_addr)
 242 {
 243         struct scsi_qla_host *ha = to_qla_host(shost);
 244         struct sockaddr_in *addr;
 245         struct sockaddr_in6 *addr6;
 246         uint32_t options = 0;
 247         uint8_t ipaddr[IPv6_ADDR_LEN];
 248         int rval;
 249
 250         memset(ipaddr, 0, IPv6_ADDR_LEN);
 251         /* IPv4 to IPv4 */
 252         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 253             (dst_addr->sa_family == AF_INET)) {
 254                 addr = (struct sockaddr_in *)dst_addr;
 255                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 256                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 257                                   "dest: %pI4\n", __func__,
 258                                   &ha->ip_config.ip_address, ipaddr));
 259                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 260                                          ipaddr);
 261                 if (rval)
 262                         rval = -EINVAL;
 263         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 264                    (dst_addr->sa_family == AF_INET6)) {
 265                 /* IPv6 to IPv6 */
 266                 addr6 = (struct sockaddr_in6 *)dst_addr;
 267                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 268
 269                 options |= PING_IPV6_PROTOCOL_ENABLE;
 270
 271                 /* Ping using LinkLocal address */
 272                 if ((iface_num == 0) || (iface_num == 1)) {
 273                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 274                                           "src: %pI6 dest: %pI6\n", __func__,
 275                                           &ha->ip_config.ipv6_link_local_addr,
 276                                           ipaddr));
 277                         options |= PING_IPV6_LINKLOCAL_ADDR;
 278                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 279                                                  pid, ipaddr);
 280                 } else {
 281                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 282                                    "not supported\n", __func__, iface_num);
 283                         rval = -ENOSYS;
 284                         goto exit_send_ping;
 285                 }
 286
 287                 /*
 288                  * If ping using LinkLocal address fails, try ping using
 289                  * IPv6 address
 290                  */
 291                 if (rval != QLA_SUCCESS) {
 292                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 293                         if (iface_num == 0) {
 294                                 options |= PING_IPV6_ADDR0;
 295                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 296                                                   "Ping src: %pI6 "
 297                                                   "dest: %pI6\n", __func__,
 298                                                   &ha->ip_config.ipv6_addr0,
 299                                                   ipaddr));
 300                         } else if (iface_num == 1) {
 301                                 options |= PING_IPV6_ADDR1;
 302                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 303                                                   "Ping src: %pI6 "
 304                                                   "dest: %pI6\n", __func__,
 305                                                   &ha->ip_config.ipv6_addr1,
 306                                                   ipaddr));
 307                         }
 308                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 309                                                  pid, ipaddr);
 310                         if (rval)
 311                                 rval = -EINVAL;
 312                 }
 313         } else
 314                 rval = -ENOSYS;
 315 exit_send_ping:
 316         return rval;
 317 }
 318
 319 static umode_t qla4_attr_is_visible(int param_type, int param)
 320 {
 321         switch (param_type) {
 322         case ISCSI_HOST_PARAM:
 323                 switch (param) {
 324                 case ISCSI_HOST_PARAM_HWADDRESS:
 325                 case ISCSI_HOST_PARAM_IPADDRESS:
 326                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 327                 case ISCSI_HOST_PARAM_PORT_STATE:
 328                 case ISCSI_HOST_PARAM_PORT_SPEED:
 329                         return S_IRUGO;
 330                 default:
 331                         return 0;
 332                 }
 333         case ISCSI_PARAM:
 334                 switch (param) {
 335                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 336                 case ISCSI_PARAM_PERSISTENT_PORT:
 337                 case ISCSI_PARAM_CONN_ADDRESS:
 338                 case ISCSI_PARAM_CONN_PORT:
 339                 case ISCSI_PARAM_TARGET_NAME:
 340                 case ISCSI_PARAM_TPGT:
 341                 case ISCSI_PARAM_TARGET_ALIAS:
 342                 case ISCSI_PARAM_MAX_BURST:
 343                 case ISCSI_PARAM_MAX_R2T:
 344                 case ISCSI_PARAM_FIRST_BURST:
 345                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 346                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 347                 case ISCSI_PARAM_IFACE_NAME:
 348                 case ISCSI_PARAM_CHAP_OUT_IDX:
 349                 case ISCSI_PARAM_CHAP_IN_IDX:
 350                 case ISCSI_PARAM_USERNAME:
 351                 case ISCSI_PARAM_PASSWORD:
 352                 case ISCSI_PARAM_USERNAME_IN:
 353                 case ISCSI_PARAM_PASSWORD_IN:
 354                         return S_IRUGO;
 355                 default:
 356                         return 0;
 357                 }
 358         case ISCSI_NET_PARAM:
 359                 switch (param) {
 360                 case ISCSI_NET_PARAM_IPV4_ADDR:
 361                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 362                 case ISCSI_NET_PARAM_IPV4_GW:
 363                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 364                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 365                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 366                 case ISCSI_NET_PARAM_IPV6_ADDR:
 367                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 368                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 369                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 370                 case ISCSI_NET_PARAM_VLAN_ID:
 371                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 372                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 373                 case ISCSI_NET_PARAM_MTU:
 374                 case ISCSI_NET_PARAM_PORT:
 375                         return S_IRUGO;
 376                 default:
 377                         return 0;
 378                 }
 379         }
 380
 381         return 0;
 382 }
 383
 384 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 385                                   uint32_t *num_entries, char *buf)
 386 {
 387         struct scsi_qla_host *ha = to_qla_host(shost);
 388         struct ql4_chap_table *chap_table;
 389         struct iscsi_chap_rec *chap_rec;
 390         int max_chap_entries = 0;
 391         int valid_chap_entries = 0;
 392         int ret = 0, i;
 393
 394         if (is_qla8022(ha))
 395                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 396                                         sizeof(struct ql4_chap_table);
 397         else
 398                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 399
 400         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 401                         __func__, *num_entries, chap_tbl_idx);
 402
 403         if (!buf) {
 404                 ret = -ENOMEM;
 405                 goto exit_get_chap_list;
 406         }
 407
 408         chap_rec = (struct iscsi_chap_rec *) buf;
 409         mutex_lock(&ha->chap_sem);
 410         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 411                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 412                 if (chap_table->cookie !=
 413                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 414                         continue;
 415
 416                 chap_rec->chap_tbl_idx = i;
 417                 strncpy(chap_rec->username, chap_table->name,
 418                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 419                 strncpy(chap_rec->password, chap_table->secret,
 420                         QL4_CHAP_MAX_SECRET_LEN);
 421                 chap_rec->password_length = chap_table->secret_len;
 422
 423                 if (chap_table->flags & BIT_7) /* local */
 424                         chap_rec->chap_type = CHAP_TYPE_OUT;
 425
 426                 if (chap_table->flags & BIT_6) /* peer */
 427                         chap_rec->chap_type = CHAP_TYPE_IN;
 428
 429                 chap_rec++;
 430
 431                 valid_chap_entries++;
 432                 if (valid_chap_entries == *num_entries)
 433                         break;
 434                 else
 435                         continue;
 436         }
 437         mutex_unlock(&ha->chap_sem);
 438
 439 exit_get_chap_list:
 440         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 441                         __func__,  valid_chap_entries);
 442         *num_entries = valid_chap_entries;
 443         return ret;
 444 }
 445
 446 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 447 {
 448         int ret = 0;
 449         uint16_t *chap_tbl_idx = (uint16_t *) data;
 450         struct iscsi_cls_session *cls_session;
 451         struct iscsi_session *sess;
 452         struct ddb_entry *ddb_entry;
 453
 454         if (!iscsi_is_session_dev(dev))
 455                 goto exit_is_chap_active;
 456
 457         cls_session = iscsi_dev_to_session(dev);
 458         sess = cls_session->dd_data;
 459         ddb_entry = sess->dd_data;
 460
 461         if (iscsi_session_chkready(cls_session))
 462                 goto exit_is_chap_active;
 463
 464         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 465                 ret = 1;
 466
 467 exit_is_chap_active:
 468         return ret;
 469 }
 470
 471 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 472                                   uint16_t chap_tbl_idx)
 473 {
 474         int ret = 0;
 475
 476         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 477                                     __qla4xxx_is_chap_active);
 478
 479         return ret;
 480 }
 481
 482 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 483 {
 484         struct scsi_qla_host *ha = to_qla_host(shost);
 485         struct ql4_chap_table *chap_table;
 486         dma_addr_t chap_dma;
 487         int max_chap_entries = 0;
 488         uint32_t offset = 0;
 489         uint32_t chap_size;
 490         int ret = 0;
 491
 492         chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 493         if (chap_table == NULL)
 494                 return -ENOMEM;
 495
 496         memset(chap_table, 0, sizeof(struct ql4_chap_table));
 497
 498         if (is_qla8022(ha))
 499                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 500                                    sizeof(struct ql4_chap_table);
 501         else
 502                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 503
 504         if (chap_tbl_idx > max_chap_entries) {
 505                 ret = -EINVAL;
 506                 goto exit_delete_chap;
 507         }
 508
 509         /* Check if chap index is in use.
 510          * If chap is in use don't delet chap entry */
 511         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 512         if (ret) {
 513                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 514                            "delete from flash\n", chap_tbl_idx);
 515                 ret = -EBUSY;
 516                 goto exit_delete_chap;
 517         }
 518
 519         chap_size = sizeof(struct ql4_chap_table);
 520         if (is_qla40XX(ha))
 521                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 522         else {
 523                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 524                 /* flt_chap_size is CHAP table size for both ports
 525                  * so divide it by 2 to calculate the offset for second port
 526                  */
 527                 if (ha->port_num == 1)
 528                         offset += (ha->hw.flt_chap_size / 2);
 529                 offset += (chap_tbl_idx * chap_size);
 530         }
 531
 532         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 533         if (ret != QLA_SUCCESS) {
 534                 ret = -EINVAL;
 535                 goto exit_delete_chap;
 536         }
 537
 538         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 539                           __le16_to_cpu(chap_table->cookie)));
 540
 541         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 542                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 543                 goto exit_delete_chap;
 544         }
 545
 546         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 547
 548         offset = FLASH_CHAP_OFFSET |
 549                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 550         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 551                                 FLASH_OPT_RMW_COMMIT);
 552         if (ret == QLA_SUCCESS && ha->chap_list) {
 553                 mutex_lock(&ha->chap_sem);
 554                 /* Update ha chap_list cache */
 555                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 556                         chap_table, sizeof(struct ql4_chap_table));
 557                 mutex_unlock(&ha->chap_sem);
 558         }
 559         if (ret != QLA_SUCCESS)
 560                 ret =  -EINVAL;
 561
 562 exit_delete_chap:
 563         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 564         return ret;
 565 }
 566
 567 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 568                                    enum iscsi_param_type param_type,
 569                                    int param, char *buf)
 570 {
 571         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 572         struct scsi_qla_host *ha = to_qla_host(shost);
 573         int len = -ENOSYS;
 574
 575         if (param_type != ISCSI_NET_PARAM)
 576                 return -ENOSYS;
 577
 578         switch (param) {
 579         case ISCSI_NET_PARAM_IPV4_ADDR:
 580                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
 581                 break;
 582         case ISCSI_NET_PARAM_IPV4_SUBNET:
 583                 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
 584                 break;
 585         case ISCSI_NET_PARAM_IPV4_GW:
 586                 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
 587                 break;
 588         case ISCSI_NET_PARAM_IFACE_ENABLE:
 589                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 590                         len = sprintf(buf, "%s\n",
 591                                       (ha->ip_config.ipv4_options &
 592                                        IPOPT_IPV4_PROTOCOL_ENABLE) ?
 593                                       "enabled" : "disabled");
 594                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 595                         len = sprintf(buf, "%s\n",
 596                                       (ha->ip_config.ipv6_options &
 597                                        IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
 598                                        "enabled" : "disabled");
 599                 break;
 600         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 601                 len = sprintf(buf, "%s\n",
 602                               (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
 603                               "dhcp" : "static");
 604                 break;
 605         case ISCSI_NET_PARAM_IPV6_ADDR:
 606                 if (iface->iface_num == 0)
 607                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
 608                 if (iface->iface_num == 1)
 609                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
 610                 break;
 611         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 612                 len = sprintf(buf, "%pI6\n",
 613                               &ha->ip_config.ipv6_link_local_addr);
 614                 break;
 615         case ISCSI_NET_PARAM_IPV6_ROUTER:
 616                 len = sprintf(buf, "%pI6\n",
 617                               &ha->ip_config.ipv6_default_router_addr);
 618                 break;
 619         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 620                 len = sprintf(buf, "%s\n",
 621                               (ha->ip_config.ipv6_addl_options &
 622                                IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
 623                                "nd" : "static");
 624                 break;
 625         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 626                 len = sprintf(buf, "%s\n",
 627                               (ha->ip_config.ipv6_addl_options &
 628                                IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
 629                                "auto" : "static");
 630                 break;
 631         case ISCSI_NET_PARAM_VLAN_ID:
 632                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 633                         len = sprintf(buf, "%d\n",
 634                                       (ha->ip_config.ipv4_vlan_tag &
 635                                        ISCSI_MAX_VLAN_ID));
 636                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 637                         len = sprintf(buf, "%d\n",
 638                                       (ha->ip_config.ipv6_vlan_tag &
 639                                        ISCSI_MAX_VLAN_ID));
 640                 break;
 641         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 642                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 643                         len = sprintf(buf, "%d\n",
 644                                       ((ha->ip_config.ipv4_vlan_tag >> 13) &
 645                                         ISCSI_MAX_VLAN_PRIORITY));
 646                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 647                         len = sprintf(buf, "%d\n",
 648                                       ((ha->ip_config.ipv6_vlan_tag >> 13) &
 649                                         ISCSI_MAX_VLAN_PRIORITY));
 650                 break;
 651         case ISCSI_NET_PARAM_VLAN_ENABLED:
 652                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 653                         len = sprintf(buf, "%s\n",
 654                                       (ha->ip_config.ipv4_options &
 655                                        IPOPT_VLAN_TAGGING_ENABLE) ?
 656                                        "enabled" : "disabled");
 657                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 658                         len = sprintf(buf, "%s\n",
 659                                       (ha->ip_config.ipv6_options &
 660                                        IPV6_OPT_VLAN_TAGGING_ENABLE) ?
 661                                        "enabled" : "disabled");
 662                 break;
 663         case ISCSI_NET_PARAM_MTU:
 664                 len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
 665                 break;
 666         case ISCSI_NET_PARAM_PORT:
 667                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 668                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
 669                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 670                         len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
 671                 break;
 672         default:
 673                 len = -ENOSYS;
 674         }
 675
 676         return len;
 677 }
 678
 679 static struct iscsi_endpoint *
 680 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
 681                    int non_blocking)
 682 {
 683         int ret;
 684         struct iscsi_endpoint *ep;
 685         struct qla_endpoint *qla_ep;
 686         struct scsi_qla_host *ha;
 687         struct sockaddr_in *addr;
 688         struct sockaddr_in6 *addr6;
 689
 690         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 691         if (!shost) {
 692                 ret = -ENXIO;
 693                 printk(KERN_ERR "%s: shost is NULL\n",
 694                        __func__);
 695                 return ERR_PTR(ret);
 696         }
 697
 698         ha = iscsi_host_priv(shost);
 699
 700         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
 701         if (!ep) {
 702                 ret = -ENOMEM;
 703                 return ERR_PTR(ret);
 704         }
 705
 706         qla_ep = ep->dd_data;
 707         memset(qla_ep, 0, sizeof(struct qla_endpoint));
 708         if (dst_addr->sa_family == AF_INET) {
 709                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
 710                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
 711                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
 712                                   (char *)&addr->sin_addr));
 713         } else if (dst_addr->sa_family == AF_INET6) {
 714                 memcpy(&qla_ep->dst_addr, dst_addr,
 715                        sizeof(struct sockaddr_in6));
 716                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
 717                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
 718                                   (char *)&addr6->sin6_addr));
 719         }
 720
 721         qla_ep->host = shost;
 722
 723         return ep;
 724 }
 725
 726 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
 727 {
 728         struct qla_endpoint *qla_ep;
 729         struct scsi_qla_host *ha;
 730         int ret = 0;
 731
 732         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 733         qla_ep = ep->dd_data;
 734         ha = to_qla_host(qla_ep->host);
 735
 736         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
 737                 ret = 1;
 738
 739         return ret;
 740 }
 741
 742 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
 743 {
 744         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 745         iscsi_destroy_endpoint(ep);
 746 }
 747
 748 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 749                                 enum iscsi_param param,
 750                                 char *buf)
 751 {
 752         struct qla_endpoint *qla_ep = ep->dd_data;
 753         struct sockaddr *dst_addr;
 754
 755         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 756
 757         switch (param) {
 758         case ISCSI_PARAM_CONN_PORT:
 759         case ISCSI_PARAM_CONN_ADDRESS:
 760                 if (!qla_ep)
 761                         return -ENOTCONN;
 762
 763                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
 764                 if (!dst_addr)
 765                         return -ENOTCONN;
 766
 767                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
 768                                                  &qla_ep->dst_addr, param, buf);
 769         default:
 770                 return -ENOSYS;
 771         }
 772 }
 773
 774 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 775                                    struct iscsi_stats *stats)
 776 {
 777         struct iscsi_session *sess;
 778         struct iscsi_cls_session *cls_sess;
 779         struct ddb_entry *ddb_entry;
 780         struct scsi_qla_host *ha;
 781         struct ql_iscsi_stats *ql_iscsi_stats;
 782         int stats_size;
 783         int ret;
 784         dma_addr_t iscsi_stats_dma;
 785
 786         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 787
 788         cls_sess = iscsi_conn_to_session(cls_conn);
 789         sess = cls_sess->dd_data;
 790         ddb_entry = sess->dd_data;
 791         ha = ddb_entry->ha;
 792
 793         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
 794         /* Allocate memory */
 795         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
 796                                             &iscsi_stats_dma, GFP_KERNEL);
 797         if (!ql_iscsi_stats) {
 798                 ql4_printk(KERN_ERR, ha,
 799                            "Unable to allocate memory for iscsi stats\n");
 800                 goto exit_get_stats;
 801         }
 802
 803         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
 804                                      iscsi_stats_dma);
 805         if (ret != QLA_SUCCESS) {
 806                 ql4_printk(KERN_ERR, ha,
 807                            "Unable to retreive iscsi stats\n");
 808                 goto free_stats;
 809         }
 810
 811         /* octets */
 812         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
 813         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
 814         /* xmit pdus */
 815         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
 816         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
 817         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
 818         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
 819         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
 820         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
 821         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
 822         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
 823         /* recv pdus */
 824         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
 825         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
 826         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
 827         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
 828         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
 829         stats->logoutrsp_pdus =
 830                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
 831         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
 832         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
 833         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
 834
 835 free_stats:
 836         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
 837                           iscsi_stats_dma);
 838 exit_get_stats:
 839         return;
 840 }
 841
 842 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
 843 {
 844         struct iscsi_cls_session *session;
 845         struct iscsi_session *sess;
 846         unsigned long flags;
 847         enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
 848
 849         session = starget_to_session(scsi_target(sc->device));
 850         sess = session->dd_data;
 851
 852         spin_lock_irqsave(&session->lock, flags);
 853         if (session->state == ISCSI_SESSION_FAILED)
 854                 ret = BLK_EH_RESET_TIMER;
 855         spin_unlock_irqrestore(&session->lock, flags);
 856
 857         return ret;
 858 }
 859
 860 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
 861 {
 862         struct scsi_qla_host *ha = to_qla_host(shost);
 863         struct iscsi_cls_host *ihost = shost->shost_data;
 864         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
 865
 866         qla4xxx_get_firmware_state(ha);
 867
 868         switch (ha->addl_fw_state & 0x0F00) {
 869         case FW_ADDSTATE_LINK_SPEED_10MBPS:
 870                 speed = ISCSI_PORT_SPEED_10MBPS;
 871                 break;
 872         case FW_ADDSTATE_LINK_SPEED_100MBPS:
 873                 speed = ISCSI_PORT_SPEED_100MBPS;
 874                 break;
 875         case FW_ADDSTATE_LINK_SPEED_1GBPS:
 876                 speed = ISCSI_PORT_SPEED_1GBPS;
 877                 break;
 878         case FW_ADDSTATE_LINK_SPEED_10GBPS:
 879                 speed = ISCSI_PORT_SPEED_10GBPS;
 880                 break;
 881         }
 882         ihost->port_speed = speed;
 883 }
 884
 885 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
 886 {
 887         struct scsi_qla_host *ha = to_qla_host(shost);
 888         struct iscsi_cls_host *ihost = shost->shost_data;
 889         uint32_t state = ISCSI_PORT_STATE_DOWN;
 890
 891         if (test_bit(AF_LINK_UP, &ha->flags))
 892                 state = ISCSI_PORT_STATE_UP;
 893
 894         ihost->port_state = state;
 895 }
 896
 897 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 898                                   enum iscsi_host_param param, char *buf)
 899 {
 900         struct scsi_qla_host *ha = to_qla_host(shost);
 901         int len;
 902
 903         switch (param) {
 904         case ISCSI_HOST_PARAM_HWADDRESS:
 905                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
 906                 break;
 907         case ISCSI_HOST_PARAM_IPADDRESS:
 908                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
 909                 break;
 910         case ISCSI_HOST_PARAM_INITIATOR_NAME:
 911                 len = sprintf(buf, "%s\n", ha->name_string);
 912                 break;
 913         case ISCSI_HOST_PARAM_PORT_STATE:
 914                 qla4xxx_set_port_state(shost);
 915                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
 916                 break;
 917         case ISCSI_HOST_PARAM_PORT_SPEED:
 918                 qla4xxx_set_port_speed(shost);
 919                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
 920                 break;
 921         default:
 922                 return -ENOSYS;
 923         }
 924
 925         return len;
 926 }
 927
 928 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
 929 {
 930         if (ha->iface_ipv4)
 931                 return;
 932
 933         /* IPv4 */
 934         ha->iface_ipv4 = iscsi_create_iface(ha->host,
 935                                             &qla4xxx_iscsi_transport,
 936                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
 937         if (!ha->iface_ipv4)
 938                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
 939                            "iface0.\n");
 940 }
 941
 942 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
 943 {
 944         if (!ha->iface_ipv6_0)
 945                 /* IPv6 iface-0 */
 946                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
 947                                                       &qla4xxx_iscsi_transport,
 948                                                       ISCSI_IFACE_TYPE_IPV6, 0,
 949                                                       0);
 950         if (!ha->iface_ipv6_0)
 951                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
 952                            "iface0.\n");
 953
 954         if (!ha->iface_ipv6_1)
 955                 /* IPv6 iface-1 */
 956                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
 957                                                       &qla4xxx_iscsi_transport,
 958                                                       ISCSI_IFACE_TYPE_IPV6, 1,
 959                                                       0);
 960         if (!ha->iface_ipv6_1)
 961                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
 962                            "iface1.\n");
 963 }
 964
 965 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
 966 {
 967         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
 968                 qla4xxx_create_ipv4_iface(ha);
 969
 970         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
 971                 qla4xxx_create_ipv6_iface(ha);
 972 }
 973
 974 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
 975 {
 976         if (ha->iface_ipv4) {
 977                 iscsi_destroy_iface(ha->iface_ipv4);
 978                 ha->iface_ipv4 = NULL;
 979         }
 980 }
 981
 982 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
 983 {
 984         if (ha->iface_ipv6_0) {
 985                 iscsi_destroy_iface(ha->iface_ipv6_0);
 986                 ha->iface_ipv6_0 = NULL;
 987         }
 988         if (ha->iface_ipv6_1) {
 989                 iscsi_destroy_iface(ha->iface_ipv6_1);
 990                 ha->iface_ipv6_1 = NULL;
 991         }
 992 }
 993
 994 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
 995 {
 996         qla4xxx_destroy_ipv4_iface(ha);
 997         qla4xxx_destroy_ipv6_iface(ha);
 998 }
 999
1000 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1001                              struct iscsi_iface_param_info *iface_param,
1002                              struct addr_ctrl_blk *init_fw_cb)
1003 {
1004         /*
1005          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1006          * iface_num 1 is valid only for IPv6 Addr.
1007          */
1008         switch (iface_param->param) {
1009         case ISCSI_NET_PARAM_IPV6_ADDR:
1010                 if (iface_param->iface_num & 0x1)
1011                         /* IPv6 Addr 1 */
1012                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
1013                                sizeof(init_fw_cb->ipv6_addr1));
1014                 else
1015                         /* IPv6 Addr 0 */
1016                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
1017                                sizeof(init_fw_cb->ipv6_addr0));
1018                 break;
1019         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1020                 if (iface_param->iface_num & 0x1)
1021                         break;
1022                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
1023                        sizeof(init_fw_cb->ipv6_if_id));
1024                 break;
1025         case ISCSI_NET_PARAM_IPV6_ROUTER:
1026                 if (iface_param->iface_num & 0x1)
1027                         break;
1028                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
1029                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1030                 break;
1031         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1032                 /* Autocfg applies to even interface */
1033                 if (iface_param->iface_num & 0x1)
1034                         break;
1035
1036                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
1037                         init_fw_cb->ipv6_addtl_opts &=
1038                                 cpu_to_le16(
1039                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1040                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
1041                         init_fw_cb->ipv6_addtl_opts |=
1042                                 cpu_to_le16(
1043                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1044                 else
1045                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1046                                    "IPv6 addr\n");
1047                 break;
1048         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1049                 /* Autocfg applies to even interface */
1050                 if (iface_param->iface_num & 0x1)
1051                         break;
1052
1053                 if (iface_param->value[0] ==
1054                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
1055                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
1056                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1057                 else if (iface_param->value[0] ==
1058                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
1059                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
1060                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1061                 else
1062                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1063                                    "IPv6 linklocal addr\n");
1064                 break;
1065         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
1066                 /* Autocfg applies to even interface */
1067                 if (iface_param->iface_num & 0x1)
1068                         break;
1069
1070                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
1071                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
1072                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1073                 break;
1074         case ISCSI_NET_PARAM_IFACE_ENABLE:
1075                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1076                         init_fw_cb->ipv6_opts |=
1077                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
1078                         qla4xxx_create_ipv6_iface(ha);
1079                 } else {
1080                         init_fw_cb->ipv6_opts &=
1081                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
1082                                             0xFFFF);
1083                         qla4xxx_destroy_ipv6_iface(ha);
1084                 }
1085                 break;
1086         case ISCSI_NET_PARAM_VLAN_TAG:
1087                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
1088                         break;
1089                 init_fw_cb->ipv6_vlan_tag =
1090                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1091                 break;
1092         case ISCSI_NET_PARAM_VLAN_ENABLED:
1093                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1094                         init_fw_cb->ipv6_opts |=
1095                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
1096                 else
1097                         init_fw_cb->ipv6_opts &=
1098                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
1099                 break;
1100         case ISCSI_NET_PARAM_MTU:
1101                 init_fw_cb->eth_mtu_size =
1102                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1103                 break;
1104         case ISCSI_NET_PARAM_PORT:
1105                 /* Autocfg applies to even interface */
1106                 if (iface_param->iface_num & 0x1)
1107                         break;
1108
1109                 init_fw_cb->ipv6_port =
1110                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1111                 break;
1112         default:
1113                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
1114                            iface_param->param);
1115                 break;
1116         }
1117 }
1118
1119 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
1120                              struct iscsi_iface_param_info *iface_param,
1121                              struct addr_ctrl_blk *init_fw_cb)
1122 {
1123         switch (iface_param->param) {
1124         case ISCSI_NET_PARAM_IPV4_ADDR:
1125                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
1126                        sizeof(init_fw_cb->ipv4_addr));
1127                 break;
1128         case ISCSI_NET_PARAM_IPV4_SUBNET:
1129                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
1130                        sizeof(init_fw_cb->ipv4_subnet));
1131                 break;
1132         case ISCSI_NET_PARAM_IPV4_GW:
1133                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
1134                        sizeof(init_fw_cb->ipv4_gw_addr));
1135                 break;
1136         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1137                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
1138                         init_fw_cb->ipv4_tcp_opts |=
1139                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
1140                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
1141                         init_fw_cb->ipv4_tcp_opts &=
1142                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
1143                 else
1144                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
1145                 break;
1146         case ISCSI_NET_PARAM_IFACE_ENABLE:
1147                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1148                         init_fw_cb->ipv4_ip_opts |=
1149                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
1150                         qla4xxx_create_ipv4_iface(ha);
1151                 } else {
1152                         init_fw_cb->ipv4_ip_opts &=
1153                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
1154                                             0xFFFF);
1155                         qla4xxx_destroy_ipv4_iface(ha);
1156                 }
1157                 break;
1158         case ISCSI_NET_PARAM_VLAN_TAG:
1159                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
1160                         break;
1161                 init_fw_cb->ipv4_vlan_tag =
1162                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1163                 break;
1164         case ISCSI_NET_PARAM_VLAN_ENABLED:
1165                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1166                         init_fw_cb->ipv4_ip_opts |=
1167                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
1168                 else
1169                         init_fw_cb->ipv4_ip_opts &=
1170                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
1171                 break;
1172         case ISCSI_NET_PARAM_MTU:
1173                 init_fw_cb->eth_mtu_size =
1174                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1175                 break;
1176         case ISCSI_NET_PARAM_PORT:
1177                 init_fw_cb->ipv4_port =
1178                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1179                 break;
1180         default:
1181                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
1182                            iface_param->param);
1183                 break;
1184         }
1185 }
1186
1187 static void
1188 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
1189 {
1190         struct addr_ctrl_blk_def *acb;
1191         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
1192         memset(acb->reserved1, 0, sizeof(acb->reserved1));
1193         memset(acb->reserved2, 0, sizeof(acb->reserved2));
1194         memset(acb->reserved3, 0, sizeof(acb->reserved3));
1195         memset(acb->reserved4, 0, sizeof(acb->reserved4));
1196         memset(acb->reserved5, 0, sizeof(acb->reserved5));
1197         memset(acb->reserved6, 0, sizeof(acb->reserved6));
1198         memset(acb->reserved7, 0, sizeof(acb->reserved7));
1199         memset(acb->reserved8, 0, sizeof(acb->reserved8));
1200         memset(acb->reserved9, 0, sizeof(acb->reserved9));
1201         memset(acb->reserved10, 0, sizeof(acb->reserved10));
1202         memset(acb->reserved11, 0, sizeof(acb->reserved11));
1203         memset(acb->reserved12, 0, sizeof(acb->reserved12));
1204         memset(acb->reserved13, 0, sizeof(acb->reserved13));
1205         memset(acb->reserved14, 0, sizeof(acb->reserved14));
1206         memset(acb->reserved15, 0, sizeof(acb->reserved15));
1207 }
1208
1209 static int
1210 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
1211 {
1212         struct scsi_qla_host *ha = to_qla_host(shost);
1213         int rval = 0;
1214         struct iscsi_iface_param_info *iface_param = NULL;
1215         struct addr_ctrl_blk *init_fw_cb = NULL;
1216         dma_addr_t init_fw_cb_dma;
1217         uint32_t mbox_cmd[MBOX_REG_COUNT];
1218         uint32_t mbox_sts[MBOX_REG_COUNT];
1219         uint32_t rem = len;
1220         struct nlattr *attr;
1221
1222         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
1223                                         sizeof(struct addr_ctrl_blk),
1224                                         &init_fw_cb_dma, GFP_KERNEL);
1225         if (!init_fw_cb) {
1226                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
1227                            __func__);
1228                 return -ENOMEM;
1229         }
1230
1231         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1232         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1233         memset(&mbox_sts, 0, sizeof(mbox_sts));
1234
1235         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
1236                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
1237                 rval = -EIO;
1238                 goto exit_init_fw_cb;
1239         }
1240
1241         nla_for_each_attr(attr, data, len, rem) {
1242                 iface_param = nla_data(attr);
1243
1244                 if (iface_param->param_type != ISCSI_NET_PARAM)
1245                         continue;
1246
1247                 switch (iface_param->iface_type) {
1248                 case ISCSI_IFACE_TYPE_IPV4:
1249                         switch (iface_param->iface_num) {
1250                         case 0:
1251                                 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
1252                                 break;
1253                         default:
1254                                 /* Cannot have more than one IPv4 interface */
1255                                 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
1256                                            "number = %d\n",
1257                                            iface_param->iface_num);
1258                                 break;
1259                         }
1260                         break;
1261                 case ISCSI_IFACE_TYPE_IPV6:
1262                         switch (iface_param->iface_num) {
1263                         case 0:
1264                         case 1:
1265                                 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
1266                                 break;
1267                         default:
1268                                 /* Cannot have more than two IPv6 interface */
1269                                 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
1270                                            "number = %d\n",
1271                                            iface_param->iface_num);
1272                                 break;
1273                         }
1274                         break;
1275                 default:
1276                         ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
1277                         break;
1278                 }
1279         }
1280
1281         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
1282
1283         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
1284                                  sizeof(struct addr_ctrl_blk),
1285                                  FLASH_OPT_RMW_COMMIT);
1286         if (rval != QLA_SUCCESS) {
1287                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
1288                            __func__);
1289                 rval = -EIO;
1290                 goto exit_init_fw_cb;
1291         }
1292
1293         rval = qla4xxx_disable_acb(ha);
1294         if (rval != QLA_SUCCESS) {
1295                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
1296                            __func__);
1297                 rval = -EIO;
1298                 goto exit_init_fw_cb;
1299         }
1300
1301         wait_for_completion_timeout(&ha->disable_acb_comp,
1302                                     DISABLE_ACB_TOV * HZ);
1303
1304         qla4xxx_initcb_to_acb(init_fw_cb);
1305
1306         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
1307         if (rval != QLA_SUCCESS) {
1308                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
1309                            __func__);
1310                 rval = -EIO;
1311                 goto exit_init_fw_cb;
1312         }
1313
1314         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1315         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
1316                                   init_fw_cb_dma);
1317
1318 exit_init_fw_cb:
1319         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
1320                           init_fw_cb, init_fw_cb_dma);
1321
1322         return rval;
1323 }
1324
1325 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
1326                                      enum iscsi_param param, char *buf)
1327 {
1328         struct iscsi_session *sess = cls_sess->dd_data;
1329         struct ddb_entry *ddb_entry = sess->dd_data;
1330         struct scsi_qla_host *ha = ddb_entry->ha;
1331         int rval, len;
1332         uint16_t idx;
1333
1334         switch (param) {
1335         case ISCSI_PARAM_CHAP_IN_IDX:
1336                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
1337                                               sess->password_in, BIDI_CHAP,
1338                                               &idx);
1339                 if (rval)
1340                         return -EINVAL;
1341
1342                 len = sprintf(buf, "%hu\n", idx);
1343                 break;
1344         case ISCSI_PARAM_CHAP_OUT_IDX:
1345                 rval = qla4xxx_get_chap_index(ha, sess->username,
1346                                               sess->password, LOCAL_CHAP,
1347                                               &idx);
1348                 if (rval)
1349                         return -EINVAL;
1350
1351                 len = sprintf(buf, "%hu\n", idx);
1352                 break;
1353         default:
1354                 return iscsi_session_get_param(cls_sess, param, buf);
1355         }
1356
1357         return len;
1358 }
1359
1360 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
1361                                   enum iscsi_param param, char *buf)
1362 {
1363         struct iscsi_conn *conn;
1364         struct qla_conn *qla_conn;
1365         struct sockaddr *dst_addr;
1366         int len = 0;
1367
1368         conn = cls_conn->dd_data;
1369         qla_conn = conn->dd_data;
1370         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
1371
1372         switch (param) {
1373         case ISCSI_PARAM_CONN_PORT:
1374         case ISCSI_PARAM_CONN_ADDRESS:
1375                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1376                                                  dst_addr, param, buf);
1377         default:
1378                 return iscsi_conn_get_param(cls_conn, param, buf);
1379         }
1380
1381         return len;
1382
1383 }
1384
1385 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
1386 {
1387         uint32_t mbx_sts = 0;
1388         uint16_t tmp_ddb_index;
1389         int ret;
1390
1391 get_ddb_index:
1392         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
1393
1394         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
1395                 DEBUG2(ql4_printk(KERN_INFO, ha,
1396                                   "Free DDB index not available\n"));
1397                 ret = QLA_ERROR;
1398                 goto exit_get_ddb_index;
1399         }
1400
1401         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1402                 goto get_ddb_index;
1403
1404         DEBUG2(ql4_printk(KERN_INFO, ha,
1405                           "Found a free DDB index at %d\n", tmp_ddb_index));
1406         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1407         if (ret == QLA_ERROR) {
1408                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1409                         ql4_printk(KERN_INFO, ha,
1410                                    "DDB index = %d not available trying next\n",
1411                                    tmp_ddb_index);
1412                         goto get_ddb_index;
1413                 }
1414                 DEBUG2(ql4_printk(KERN_INFO, ha,
1415                                   "Free FW DDB not available\n"));
1416         }
1417
1418         *ddb_index = tmp_ddb_index;
1419
1420 exit_get_ddb_index:
1421         return ret;
1422 }
1423
1424 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1425                                    struct ddb_entry *ddb_entry,
1426                                    char *existing_ipaddr,
1427                                    char *user_ipaddr)
1428 {
1429         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1430         char formatted_ipaddr[DDB_IPADDR_LEN];
1431         int status = QLA_SUCCESS, ret = 0;
1432
1433         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1434                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1435                                '\0', NULL);
1436                 if (ret == 0) {
1437                         status = QLA_ERROR;
1438                         goto out_match;
1439                 }
1440                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1441         } else {
1442                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1443                                '\0', NULL);
1444                 if (ret == 0) {
1445                         status = QLA_ERROR;
1446                         goto out_match;
1447                 }
1448                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1449         }
1450
1451         if (strcmp(existing_ipaddr, formatted_ipaddr))
1452                 status = QLA_ERROR;
1453
1454 out_match:
1455         return status;
1456 }
1457
1458 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1459                                       struct iscsi_cls_conn *cls_conn)
1460 {
1461         int idx = 0, max_ddbs, rval;
1462         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1463         struct iscsi_session *sess, *existing_sess;
1464         struct iscsi_conn *conn, *existing_conn;
1465         struct ddb_entry *ddb_entry;
1466
1467         sess = cls_sess->dd_data;
1468         conn = cls_conn->dd_data;
1469
1470         if (sess->targetname == NULL ||
1471             conn->persistent_address == NULL ||
1472             conn->persistent_port == 0)
1473                 return QLA_ERROR;
1474
1475         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1476                                      MAX_DEV_DB_ENTRIES;
1477
1478         for (idx = 0; idx < max_ddbs; idx++) {
1479                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1480                 if (ddb_entry == NULL)
1481                         continue;
1482
1483                 if (ddb_entry->ddb_type != FLASH_DDB)
1484                         continue;
1485
1486                 existing_sess = ddb_entry->sess->dd_data;
1487                 existing_conn = ddb_entry->conn->dd_data;
1488
1489                 if (existing_sess->targetname == NULL ||
1490                     existing_conn->persistent_address == NULL ||
1491                     existing_conn->persistent_port == 0)
1492                         continue;
1493
1494                 DEBUG2(ql4_printk(KERN_INFO, ha,
1495                                   "IQN = %s User IQN = %s\n",
1496                                   existing_sess->targetname,
1497                                   sess->targetname));
1498
1499                 DEBUG2(ql4_printk(KERN_INFO, ha,
1500                                   "IP = %s User IP = %s\n",
1501                                   existing_conn->persistent_address,
1502                                   conn->persistent_address));
1503
1504                 DEBUG2(ql4_printk(KERN_INFO, ha,
1505                                   "Port = %d User Port = %d\n",
1506                                   existing_conn->persistent_port,
1507                                   conn->persistent_port));
1508
1509                 if (strcmp(existing_sess->targetname, sess->targetname))
1510                         continue;
1511                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1512                                         existing_conn->persistent_address,
1513                                         conn->persistent_address);
1514                 if (rval == QLA_ERROR)
1515                         continue;
1516                 if (existing_conn->persistent_port != conn->persistent_port)
1517                         continue;
1518                 break;
1519         }
1520
1521         if (idx == max_ddbs)
1522                 return QLA_ERROR;
1523
1524         DEBUG2(ql4_printk(KERN_INFO, ha,
1525                           "Match found in fwdb sessions\n"));
1526         return QLA_SUCCESS;
1527 }
1528
1529 static struct iscsi_cls_session *
1530 qla4xxx_session_create(struct iscsi_endpoint *ep,
1531                         uint16_t cmds_max, uint16_t qdepth,
1532                         uint32_t initial_cmdsn)
1533 {
1534         struct iscsi_cls_session *cls_sess;
1535         struct scsi_qla_host *ha;
1536         struct qla_endpoint *qla_ep;
1537         struct ddb_entry *ddb_entry;
1538         uint16_t ddb_index;
1539         struct iscsi_session *sess;
1540         struct sockaddr *dst_addr;
1541         int ret;
1542
1543         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1544         if (!ep) {
1545                 printk(KERN_ERR "qla4xxx: missing ep.\n");
1546                 return NULL;
1547         }
1548
1549         qla_ep = ep->dd_data;
1550         dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1551         ha = to_qla_host(qla_ep->host);
1552
1553         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1554         if (ret == QLA_ERROR)
1555                 return NULL;
1556
1557         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1558                                        cmds_max, sizeof(struct ddb_entry),
1559                                        sizeof(struct ql4_task_data),
1560                                        initial_cmdsn, ddb_index);
1561         if (!cls_sess)
1562                 return NULL;
1563
1564         sess = cls_sess->dd_data;
1565         ddb_entry = sess->dd_data;
1566         ddb_entry->fw_ddb_index = ddb_index;
1567         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1568         ddb_entry->ha = ha;
1569         ddb_entry->sess = cls_sess;
1570         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1571         ddb_entry->ddb_change = qla4xxx_ddb_change;
1572         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1573         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1574         ha->tot_ddbs++;
1575
1576         return cls_sess;
1577 }
1578
1579 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1580 {
1581         struct iscsi_session *sess;
1582         struct ddb_entry *ddb_entry;
1583         struct scsi_qla_host *ha;
1584         unsigned long flags, wtime;
1585         struct dev_db_entry *fw_ddb_entry = NULL;
1586         dma_addr_t fw_ddb_entry_dma;
1587         uint32_t ddb_state;
1588         int ret;
1589
1590         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1591         sess = cls_sess->dd_data;
1592         ddb_entry = sess->dd_data;
1593         ha = ddb_entry->ha;
1594
1595         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1596                                           &fw_ddb_entry_dma, GFP_KERNEL);
1597         if (!fw_ddb_entry) {
1598                 ql4_printk(KERN_ERR, ha,
1599                            "%s: Unable to allocate dma buffer\n", __func__);
1600                 goto destroy_session;
1601         }
1602
1603         wtime = jiffies + (HZ * LOGOUT_TOV);
1604         do {
1605                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
1606                                               fw_ddb_entry, fw_ddb_entry_dma,
1607                                               NULL, NULL, &ddb_state, NULL,
1608                                               NULL, NULL);
1609                 if (ret == QLA_ERROR)
1610                         goto destroy_session;
1611
1612                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
1613                     (ddb_state == DDB_DS_SESSION_FAILED))
1614                         goto destroy_session;
1615
1616                 schedule_timeout_uninterruptible(HZ);
1617         } while ((time_after(wtime, jiffies)));
1618
1619 destroy_session:
1620         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1621
1622         spin_lock_irqsave(&ha->hardware_lock, flags);
1623         qla4xxx_free_ddb(ha, ddb_entry);
1624         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1625
1626         iscsi_session_teardown(cls_sess);
1627
1628         if (fw_ddb_entry)
1629                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1630                                   fw_ddb_entry, fw_ddb_entry_dma);
1631 }
1632
1633 static struct iscsi_cls_conn *
1634 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1635 {
1636         struct iscsi_cls_conn *cls_conn;
1637         struct iscsi_session *sess;
1638         struct ddb_entry *ddb_entry;
1639
1640         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1641         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
1642                                     conn_idx);
1643         if (!cls_conn)
1644                 return NULL;
1645
1646         sess = cls_sess->dd_data;
1647         ddb_entry = sess->dd_data;
1648         ddb_entry->conn = cls_conn;
1649
1650         return cls_conn;
1651 }
1652
1653 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
1654                              struct iscsi_cls_conn *cls_conn,
1655                              uint64_t transport_fd, int is_leading)
1656 {
1657         struct iscsi_conn *conn;
1658         struct qla_conn *qla_conn;
1659         struct iscsi_endpoint *ep;
1660
1661         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1662
1663         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1664                 return -EINVAL;
1665         ep = iscsi_lookup_endpoint(transport_fd);
1666         conn = cls_conn->dd_data;
1667         qla_conn = conn->dd_data;
1668         qla_conn->qla_ep = ep->dd_data;
1669         return 0;
1670 }
1671
1672 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
1673 {
1674         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1675         struct iscsi_session *sess;
1676         struct ddb_entry *ddb_entry;
1677         struct scsi_qla_host *ha;
1678         struct dev_db_entry *fw_ddb_entry = NULL;
1679         dma_addr_t fw_ddb_entry_dma;
1680         uint32_t mbx_sts = 0;
1681         int ret = 0;
1682         int status = QLA_SUCCESS;
1683
1684         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1685         sess = cls_sess->dd_data;
1686         ddb_entry = sess->dd_data;
1687         ha = ddb_entry->ha;
1688
1689         /* Check if we have  matching FW DDB, if yes then do not
1690          * login to this target. This could cause target to logout previous
1691          * connection
1692          */
1693         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
1694         if (ret == QLA_SUCCESS) {
1695                 ql4_printk(KERN_INFO, ha,
1696                            "Session already exist in FW.\n");
1697                 ret = -EEXIST;
1698                 goto exit_conn_start;
1699         }
1700
1701         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1702                                           &fw_ddb_entry_dma, GFP_KERNEL);
1703         if (!fw_ddb_entry) {
1704                 ql4_printk(KERN_ERR, ha,
1705                            "%s: Unable to allocate dma buffer\n", __func__);
1706                 ret = -ENOMEM;
1707                 goto exit_conn_start;
1708         }
1709
1710         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
1711         if (ret) {
1712                 /* If iscsid is stopped and started then no need to do
1713                 * set param again since ddb state will be already
1714                 * active and FW does not allow set ddb to an
1715                 * active session.
1716                 */
1717                 if (mbx_sts)
1718                         if (ddb_entry->fw_ddb_device_state ==
1719                                                 DDB_DS_SESSION_ACTIVE) {
1720                                 ddb_entry->unblock_sess(ddb_entry->sess);
1721                                 goto exit_set_param;
1722                         }
1723
1724                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
1725                            __func__, ddb_entry->fw_ddb_index);
1726                 goto exit_conn_start;
1727         }
1728
1729         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1730         if (status == QLA_ERROR) {
1731                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1732                            sess->targetname);
1733                 ret = -EINVAL;
1734                 goto exit_conn_start;
1735         }
1736
1737         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
1738                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1739
1740         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
1741                       ddb_entry->fw_ddb_device_state));
1742
1743 exit_set_param:
1744         ret = 0;
1745
1746 exit_conn_start:
1747         if (fw_ddb_entry)
1748                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1749                                   fw_ddb_entry, fw_ddb_entry_dma);
1750         return ret;
1751 }
1752
1753 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
1754 {
1755         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1756         struct iscsi_session *sess;
1757         struct scsi_qla_host *ha;
1758         struct ddb_entry *ddb_entry;
1759         int options;
1760
1761         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1762         sess = cls_sess->dd_data;
1763         ddb_entry = sess->dd_data;
1764         ha = ddb_entry->ha;
1765
1766         options = LOGOUT_OPTION_CLOSE_SESSION;
1767         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
1768                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
1769 }
1770
1771 static void qla4xxx_task_work(struct work_struct *wdata)
1772 {
1773         struct ql4_task_data *task_data;
1774         struct scsi_qla_host *ha;
1775         struct passthru_status *sts;
1776         struct iscsi_task *task;
1777         struct iscsi_hdr *hdr;
1778         uint8_t *data;
1779         uint32_t data_len;
1780         struct iscsi_conn *conn;
1781         int hdr_len;
1782         itt_t itt;
1783
1784         task_data = container_of(wdata, struct ql4_task_data, task_work);
1785         ha = task_data->ha;
1786         task = task_data->task;
1787         sts = &task_data->sts;
1788         hdr_len = sizeof(struct iscsi_hdr);
1789
1790         DEBUG3(printk(KERN_INFO "Status returned\n"));
1791         DEBUG3(qla4xxx_dump_buffer(sts, 64));
1792         DEBUG3(printk(KERN_INFO "Response buffer"));
1793         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
1794
1795         conn = task->conn;
1796
1797         switch (sts->completionStatus) {
1798         case PASSTHRU_STATUS_COMPLETE:
1799                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
1800                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
1801                 itt = sts->handle;
1802                 hdr->itt = itt;
1803                 data = task_data->resp_buffer + hdr_len;
1804                 data_len = task_data->resp_len - hdr_len;
1805                 iscsi_complete_pdu(conn, hdr, data, data_len);
1806                 break;
1807         default:
1808                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
1809                            sts->completionStatus);
1810                 break;
1811         }
1812         return;
1813 }
1814
1815 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
1816 {
1817         struct ql4_task_data *task_data;
1818         struct iscsi_session *sess;
1819         struct ddb_entry *ddb_entry;
1820         struct scsi_qla_host *ha;
1821         int hdr_len;
1822
1823         sess = task->conn->session;
1824         ddb_entry = sess->dd_data;
1825         ha = ddb_entry->ha;
1826         task_data = task->dd_data;
1827         memset(task_data, 0, sizeof(struct ql4_task_data));
1828
1829         if (task->sc) {
1830                 ql4_printk(KERN_INFO, ha,
1831                            "%s: SCSI Commands not implemented\n", __func__);
1832                 return -EINVAL;
1833         }
1834
1835         hdr_len = sizeof(struct iscsi_hdr);
1836         task_data->ha = ha;
1837         task_data->task = task;
1838
1839         if (task->data_count) {
1840                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
1841                                                      task->data_count,
1842                                                      PCI_DMA_TODEVICE);
1843         }
1844
1845         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1846                       __func__, task->conn->max_recv_dlength, hdr_len));
1847
1848         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
1849         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
1850                                                     task_data->resp_len,
1851                                                     &task_data->resp_dma,
1852                                                     GFP_ATOMIC);
1853         if (!task_data->resp_buffer)
1854                 goto exit_alloc_pdu;
1855
1856         task_data->req_len = task->data_count + hdr_len;
1857         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
1858                                                    task_data->req_len,
1859                                                    &task_data->req_dma,
1860                                                    GFP_ATOMIC);
1861         if (!task_data->req_buffer)
1862                 goto exit_alloc_pdu;
1863
1864         task->hdr = task_data->req_buffer;
1865
1866         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
1867
1868         return 0;
1869
1870 exit_alloc_pdu:
1871         if (task_data->resp_buffer)
1872                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1873                                   task_data->resp_buffer, task_data->resp_dma);
1874
1875         if (task_data->req_buffer)
1876                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1877                                   task_data->req_buffer, task_data->req_dma);
1878         return -ENOMEM;
1879 }
1880
1881 static void qla4xxx_task_cleanup(struct iscsi_task *task)
1882 {
1883         struct ql4_task_data *task_data;
1884         struct iscsi_session *sess;
1885         struct ddb_entry *ddb_entry;
1886         struct scsi_qla_host *ha;
1887         int hdr_len;
1888
1889         hdr_len = sizeof(struct iscsi_hdr);
1890         sess = task->conn->session;
1891         ddb_entry = sess->dd_data;
1892         ha = ddb_entry->ha;
1893         task_data = task->dd_data;
1894
1895         if (task->data_count) {
1896                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
1897                                  task->data_count, PCI_DMA_TODEVICE);
1898         }
1899
1900         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1901                       __func__, task->conn->max_recv_dlength, hdr_len));
1902
1903         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1904                           task_data->resp_buffer, task_data->resp_dma);
1905         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1906                           task_data->req_buffer, task_data->req_dma);
1907         return;
1908 }
1909
1910 static int qla4xxx_task_xmit(struct iscsi_task *task)
1911 {
1912         struct scsi_cmnd *sc = task->sc;
1913         struct iscsi_session *sess = task->conn->session;
1914         struct ddb_entry *ddb_entry = sess->dd_data;
1915         struct scsi_qla_host *ha = ddb_entry->ha;
1916
1917         if (!sc)
1918                 return qla4xxx_send_passthru0(task);
1919
1920         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
1921                    __func__);
1922         return -ENOSYS;
1923 }
1924
1925 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
1926                                      struct dev_db_entry *fw_ddb_entry,
1927                                      struct iscsi_cls_session *cls_sess,
1928                                      struct iscsi_cls_conn *cls_conn)
1929 {
1930         int buflen = 0;
1931         struct iscsi_session *sess;
1932         struct ddb_entry *ddb_entry;
1933         struct iscsi_conn *conn;
1934         char ip_addr[DDB_IPADDR_LEN];
1935         uint16_t options = 0;
1936
1937         sess = cls_sess->dd_data;
1938         ddb_entry = sess->dd_data;
1939         conn = cls_conn->dd_data;
1940
1941         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
1942
1943         conn->max_recv_dlength = BYTE_UNITS *
1944                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
1945
1946         conn->max_xmit_dlength = BYTE_UNITS *
1947                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
1948
1949         sess->initial_r2t_en =
1950                             (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1951
1952         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
1953
1954         sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1955
1956         sess->first_burst = BYTE_UNITS *
1957                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
1958
1959         sess->max_burst = BYTE_UNITS *
1960                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
1961
1962         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
1963
1964         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
1965
1966         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
1967
1968         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
1969
1970         options = le16_to_cpu(fw_ddb_entry->options);
1971         if (options & DDB_OPT_IPV6_DEVICE)
1972                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
1973         else
1974                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
1975
1976         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
1977                         (char *)fw_ddb_entry->iscsi_name, buflen);
1978         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
1979                         (char *)ha->name_string, buflen);
1980         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
1981                         (char *)ip_addr, buflen);
1982         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
1983                         (char *)fw_ddb_entry->iscsi_alias, buflen);
1984 }
1985
1986 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
1987                                              struct ddb_entry *ddb_entry)
1988 {
1989         struct iscsi_cls_session *cls_sess;
1990         struct iscsi_cls_conn *cls_conn;
1991         uint32_t ddb_state;
1992         dma_addr_t fw_ddb_entry_dma;
1993         struct dev_db_entry *fw_ddb_entry;
1994
1995         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1996                                           &fw_ddb_entry_dma, GFP_KERNEL);
1997         if (!fw_ddb_entry) {
1998                 ql4_printk(KERN_ERR, ha,
1999                            "%s: Unable to allocate dma buffer\n", __func__);
2000                 goto exit_session_conn_fwddb_param;
2001         }
2002
2003         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2004                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2005                                     NULL, NULL, NULL) == QLA_ERROR) {
2006                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2007                                   "get_ddb_entry for fw_ddb_index %d\n",
2008                                   ha->host_no, __func__,
2009                                   ddb_entry->fw_ddb_index));
2010                 goto exit_session_conn_fwddb_param;
2011         }
2012
2013         cls_sess = ddb_entry->sess;
2014
2015         cls_conn = ddb_entry->conn;
2016
2017         /* Update params */
2018         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
2019
2020 exit_session_conn_fwddb_param:
2021         if (fw_ddb_entry)
2022                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2023                                   fw_ddb_entry, fw_ddb_entry_dma);
2024 }
2025
2026 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
2027                                        struct ddb_entry *ddb_entry)
2028 {
2029         struct iscsi_cls_session *cls_sess;
2030         struct iscsi_cls_conn *cls_conn;
2031         struct iscsi_session *sess;
2032         struct iscsi_conn *conn;
2033         uint32_t ddb_state;
2034         dma_addr_t fw_ddb_entry_dma;
2035         struct dev_db_entry *fw_ddb_entry;
2036
2037         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2038                                           &fw_ddb_entry_dma, GFP_KERNEL);
2039         if (!fw_ddb_entry) {
2040                 ql4_printk(KERN_ERR, ha,
2041                            "%s: Unable to allocate dma buffer\n", __func__);
2042                 goto exit_session_conn_param;
2043         }
2044
2045         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2046                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2047                                     NULL, NULL, NULL) == QLA_ERROR) {
2048                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2049                                   "get_ddb_entry for fw_ddb_index %d\n",
2050                                   ha->host_no, __func__,
2051                                   ddb_entry->fw_ddb_index));
2052                 goto exit_session_conn_param;
2053         }
2054
2055         cls_sess = ddb_entry->sess;
2056         sess = cls_sess->dd_data;
2057
2058         cls_conn = ddb_entry->conn;
2059         conn = cls_conn->dd_data;
2060
2061         /* Update timers after login */
2062         ddb_entry->default_relogin_timeout =
2063                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
2064                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
2065                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
2066         ddb_entry->default_time2wait =
2067                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2068
2069         /* Update params */
2070         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2071         conn->max_recv_dlength = BYTE_UNITS *
2072                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2073
2074         conn->max_xmit_dlength = BYTE_UNITS *
2075                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2076
2077         sess->initial_r2t_en =
2078                             (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2079
2080         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2081
2082         sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2083
2084         sess->first_burst = BYTE_UNITS *
2085                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2086
2087         sess->max_burst = BYTE_UNITS *
2088                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2089
2090         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2091
2092         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2093
2094         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2095
2096         memcpy(sess->initiatorname, ha->name_string,
2097                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
2098
2099         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2100                         (char *)fw_ddb_entry->iscsi_alias, 0);
2101
2102 exit_session_conn_param:
2103         if (fw_ddb_entry)
2104                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2105                                   fw_ddb_entry, fw_ddb_entry_dma);
2106 }
2107
2108 /*
2109  * Timer routines
2110  */
2111
2112 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
2113                                 unsigned long interval)
2114 {
2115         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
2116                      __func__, ha->host->host_no));
2117         init_timer(&ha->timer);
2118         ha->timer.expires = jiffies + interval * HZ;
2119         ha->timer.data = (unsigned long)ha;
2120         ha->timer.function = (void (*)(unsigned long))func;
2121         add_timer(&ha->timer);
2122         ha->timer_active = 1;
2123 }
2124
2125 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
2126 {
2127         del_timer_sync(&ha->timer);
2128         ha->timer_active = 0;
2129 }
2130
2131 /***
2132  * qla4xxx_mark_device_missing - blocks the session
2133  * @cls_session: Pointer to the session to be blocked
2134  * @ddb_entry: Pointer to device database entry
2135  *
2136  * This routine marks a device missing and close connection.
2137  **/
2138 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
2139 {
2140         iscsi_block_session(cls_session);
2141 }
2142
2143 /**
2144  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
2145  * @ha: Pointer to host adapter structure.
2146  *
2147  * This routine marks a device missing and resets the relogin retry count.
2148  **/
2149 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
2150 {
2151         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
2152 }
2153
2154 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
2155                                        struct ddb_entry *ddb_entry,
2156                                        struct scsi_cmnd *cmd)
2157 {
2158         struct srb *srb;
2159
2160         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2161         if (!srb)
2162                 return srb;
2163
2164         kref_init(&srb->srb_ref);
2165         srb->ha = ha;
2166         srb->ddb = ddb_entry;
2167         srb->cmd = cmd;
2168         srb->flags = 0;
2169         CMD_SP(cmd) = (void *)srb;
2170
2171         return srb;
2172 }
2173
2174 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
2175 {
2176         struct scsi_cmnd *cmd = srb->cmd;
2177
2178         if (srb->flags & SRB_DMA_VALID) {
2179                 scsi_dma_unmap(cmd);
2180                 srb->flags &= ~SRB_DMA_VALID;
2181         }
2182         CMD_SP(cmd) = NULL;
2183 }
2184
2185 void qla4xxx_srb_compl(struct kref *ref)
2186 {
2187         struct srb *srb = container_of(ref, struct srb, srb_ref);
2188         struct scsi_cmnd *cmd = srb->cmd;
2189         struct scsi_qla_host *ha = srb->ha;
2190
2191         qla4xxx_srb_free_dma(ha, srb);
2192
2193         mempool_free(srb, ha->srb_mempool);
2194
2195         cmd->scsi_done(cmd);
2196 }
2197
2198 /**
2199  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
2200  * @host: scsi host
2201  * @cmd: Pointer to Linux's SCSI command structure
2202  *
2203  * Remarks:
2204  * This routine is invoked by Linux to send a SCSI command to the driver.
2205  * The mid-level driver tries to ensure that queuecommand never gets
2206  * invoked concurrently with itself or the interrupt handler (although
2207  * the interrupt handler may call this routine as part of request-
2208  * completion handling).   Unfortunely, it sometimes calls the scheduler
2209  * in interrupt context which is a big NO! NO!.
2210  **/
2211 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
2212 {
2213         struct scsi_qla_host *ha = to_qla_host(host);
2214         struct ddb_entry *ddb_entry = cmd->device->hostdata;
2215         struct iscsi_cls_session *sess = ddb_entry->sess;
2216         struct srb *srb;
2217         int rval;
2218
2219         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2220                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
2221                         cmd->result = DID_NO_CONNECT << 16;
2222                 else
2223                         cmd->result = DID_REQUEUE << 16;
2224                 goto qc_fail_command;
2225         }
2226
2227         if (!sess) {
2228                 cmd->result = DID_IMM_RETRY << 16;
2229                 goto qc_fail_command;
2230         }
2231
2232         rval = iscsi_session_chkready(sess);
2233         if (rval) {
2234                 cmd->result = rval;
2235                 goto qc_fail_command;
2236         }
2237
2238         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2239             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2240             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2241             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2242             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2243             !test_bit(AF_ONLINE, &ha->flags) ||
2244             !test_bit(AF_LINK_UP, &ha->flags) ||
2245             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
2246                 goto qc_host_busy;
2247
2248         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
2249         if (!srb)
2250                 goto qc_host_busy;
2251
2252         rval = qla4xxx_send_command_to_isp(ha, srb);
2253         if (rval != QLA_SUCCESS)
2254                 goto qc_host_busy_free_sp;
2255
2256         return 0;
2257
2258 qc_host_busy_free_sp:
2259         qla4xxx_srb_free_dma(ha, srb);
2260         mempool_free(srb, ha->srb_mempool);
2261
2262 qc_host_busy:
2263         return SCSI_MLQUEUE_HOST_BUSY;
2264
2265 qc_fail_command:
2266         cmd->scsi_done(cmd);
2267
2268         return 0;
2269 }
2270
2271 /**
2272  * qla4xxx_mem_free - frees memory allocated to adapter
2273  * @ha: Pointer to host adapter structure.
2274  *
2275  * Frees memory previously allocated by qla4xxx_mem_alloc
2276  **/
2277 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
2278 {
2279         if (ha->queues)
2280                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
2281                                   ha->queues_dma);
2282
2283          if (ha->fw_dump)
2284                 vfree(ha->fw_dump);
2285
2286         ha->queues_len = 0;
2287         ha->queues = NULL;
2288         ha->queues_dma = 0;
2289         ha->request_ring = NULL;
2290         ha->request_dma = 0;
2291         ha->response_ring = NULL;
2292         ha->response_dma = 0;
2293         ha->shadow_regs = NULL;
2294         ha->shadow_regs_dma = 0;
2295         ha->fw_dump = NULL;
2296         ha->fw_dump_size = 0;
2297
2298         /* Free srb pool. */
2299         if (ha->srb_mempool)
2300                 mempool_destroy(ha->srb_mempool);
2301
2302         ha->srb_mempool = NULL;
2303
2304         if (ha->chap_dma_pool)
2305                 dma_pool_destroy(ha->chap_dma_pool);
2306
2307         if (ha->chap_list)
2308                 vfree(ha->chap_list);
2309         ha->chap_list = NULL;
2310
2311         if (ha->fw_ddb_dma_pool)
2312                 dma_pool_destroy(ha->fw_ddb_dma_pool);
2313
2314         /* release io space registers  */
2315         if (is_qla8022(ha)) {
2316                 if (ha->nx_pcibase)
2317                         iounmap(
2318                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
2319         } else if (is_qla8032(ha)) {
2320                 if (ha->nx_pcibase)
2321                         iounmap(
2322                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
2323         } else if (ha->reg) {
2324                 iounmap(ha->reg);
2325         }
2326
2327         if (ha->reset_tmplt.buff)
2328                 vfree(ha->reset_tmplt.buff);
2329
2330         pci_release_regions(ha->pdev);
2331 }
2332
2333 /**
2334  * qla4xxx_mem_alloc - allocates memory for use by adapter.
2335  * @ha: Pointer to host adapter structure
2336  *
2337  * Allocates DMA memory for request and response queues. Also allocates memory
2338  * for srbs.
2339  **/
2340 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
2341 {
2342         unsigned long align;
2343
2344         /* Allocate contiguous block of DMA memory for queues. */
2345         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2346                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
2347                           sizeof(struct shadow_regs) +
2348                           MEM_ALIGN_VALUE +
2349                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
2350         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
2351                                         &ha->queues_dma, GFP_KERNEL);
2352         if (ha->queues == NULL) {
2353                 ql4_printk(KERN_WARNING, ha,
2354                     "Memory Allocation failed - queues.\n");
2355
2356                 goto mem_alloc_error_exit;
2357         }
2358         memset(ha->queues, 0, ha->queues_len);
2359
2360         /*
2361          * As per RISC alignment requirements -- the bus-address must be a
2362          * multiple of the request-ring size (in bytes).
2363          */
2364         align = 0;
2365         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
2366                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
2367                                            (MEM_ALIGN_VALUE - 1));
2368
2369         /* Update request and response queue pointers. */
2370         ha->request_dma = ha->queues_dma + align;
2371         ha->request_ring = (struct queue_entry *) (ha->queues + align);
2372         ha->response_dma = ha->queues_dma + align +
2373                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
2374         ha->response_ring = (struct queue_entry *) (ha->queues + align +
2375                                                     (REQUEST_QUEUE_DEPTH *
2376                                                      QUEUE_SIZE));
2377         ha->shadow_regs_dma = ha->queues_dma + align +
2378                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2379                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
2380         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
2381                                                   (REQUEST_QUEUE_DEPTH *
2382                                                    QUEUE_SIZE) +
2383                                                   (RESPONSE_QUEUE_DEPTH *
2384                                                    QUEUE_SIZE));
2385
2386         /* Allocate memory for srb pool. */
2387         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2388                                          mempool_free_slab, srb_cachep);
2389         if (ha->srb_mempool == NULL) {
2390                 ql4_printk(KERN_WARNING, ha,
2391                     "Memory Allocation failed - SRB Pool.\n");
2392
2393                 goto mem_alloc_error_exit;
2394         }
2395
2396         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
2397                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
2398
2399         if (ha->chap_dma_pool == NULL) {
2400                 ql4_printk(KERN_WARNING, ha,
2401                     "%s: chap_dma_pool allocation failed..\n", __func__);
2402                 goto mem_alloc_error_exit;
2403         }
2404
2405         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
2406                                               DDB_DMA_BLOCK_SIZE, 8, 0);
2407
2408         if (ha->fw_ddb_dma_pool == NULL) {
2409                 ql4_printk(KERN_WARNING, ha,
2410                            "%s: fw_ddb_dma_pool allocation failed..\n",
2411                            __func__);
2412                 goto mem_alloc_error_exit;
2413         }
2414
2415         return QLA_SUCCESS;
2416
2417 mem_alloc_error_exit:
2418         qla4xxx_mem_free(ha);
2419         return QLA_ERROR;
2420 }
2421
2422 /**
2423  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
2424  * @ha: adapter block pointer.
2425  *
2426  * Note: The caller should not hold the idc lock.
2427  **/
2428 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
2429 {
2430         uint32_t temp, temp_state, temp_val;
2431         int status = QLA_SUCCESS;
2432
2433         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
2434
2435         temp_state = qla82xx_get_temp_state(temp);
2436         temp_val = qla82xx_get_temp_val(temp);
2437
2438         if (temp_state == QLA82XX_TEMP_PANIC) {
2439                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
2440                            " exceeds maximum allowed. Hardware has been shut"
2441                            " down.\n", temp_val);
2442                 status = QLA_ERROR;
2443         } else if (temp_state == QLA82XX_TEMP_WARN) {
2444                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
2445                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
2446                                    " degrees C exceeds operating range."
2447                                    " Immediate action needed.\n", temp_val);
2448         } else {
2449                 if (ha->temperature == QLA82XX_TEMP_WARN)
2450                         ql4_printk(KERN_INFO, ha, "Device temperature is"
2451                                    " now %d degrees C in normal range.\n",
2452                                    temp_val);
2453         }
2454         ha->temperature = temp_state;
2455         return status;
2456 }
2457
2458 /**
2459  * qla4_8xxx_check_fw_alive  - Check firmware health
2460  * @ha: Pointer to host adapter structure.
2461  *
2462  * Context: Interrupt
2463  **/
2464 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
2465 {
2466         uint32_t fw_heartbeat_counter;
2467         int status = QLA_SUCCESS;
2468
2469         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
2470                                                    QLA8XXX_PEG_ALIVE_COUNTER);
2471         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
2472         if (fw_heartbeat_counter == 0xffffffff) {
2473                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
2474                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
2475                     ha->host_no, __func__));
2476                 return status;
2477         }
2478
2479         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
2480                 ha->seconds_since_last_heartbeat++;
2481                 /* FW not alive after 2 seconds */
2482                 if (ha->seconds_since_last_heartbeat == 2) {
2483                         ha->seconds_since_last_heartbeat = 0;
2484                         qla4_8xxx_dump_peg_reg(ha);
2485                         status = QLA_ERROR;
2486                 }
2487         } else
2488                 ha->seconds_since_last_heartbeat = 0;
2489
2490         ha->fw_heartbeat_counter = fw_heartbeat_counter;
2491         return status;
2492 }
2493
2494 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
2495 {
2496         uint32_t halt_status;
2497         int halt_status_unrecoverable = 0;
2498
2499         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
2500
2501         if (is_qla8022(ha)) {
2502                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
2503                            __func__);
2504                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2505                                 CRB_NIU_XG_PAUSE_CTL_P0 |
2506                                 CRB_NIU_XG_PAUSE_CTL_P1);
2507
2508                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
2509                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
2510                                    __func__);
2511                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
2512                         halt_status_unrecoverable = 1;
2513         } else if (is_qla8032(ha)) {
2514                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
2515                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
2516                                    __func__);
2517                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
2518                         halt_status_unrecoverable = 1;
2519         }
2520
2521         /*
2522          * Since we cannot change dev_state in interrupt context,
2523          * set appropriate DPC flag then wakeup DPC
2524          */
2525         if (halt_status_unrecoverable) {
2526                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2527         } else {
2528                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
2529                            __func__);
2530                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2531         }
2532         qla4xxx_mailbox_premature_completion(ha);
2533         qla4xxx_wake_dpc(ha);
2534 }
2535
2536 /**
2537  * qla4_8xxx_watchdog - Poll dev state
2538  * @ha: Pointer to host adapter structure.
2539  *
2540  * Context: Interrupt
2541  **/
2542 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
2543 {
2544         uint32_t dev_state;
2545
2546         /* don't poll if reset is going on */
2547         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2548             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2549             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
2550                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
2551
2552                 if (qla4_8xxx_check_temp(ha)) {
2553                         if (is_qla8022(ha)) {
2554                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
2555                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2556                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
2557                                                 CRB_NIU_XG_PAUSE_CTL_P1);
2558                         }
2559                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2560                         qla4xxx_wake_dpc(ha);
2561                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
2562                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2563                         if (is_qla8032(ha) ||
2564                             (is_qla8022(ha) && !ql4xdontresethba)) {
2565                                 ql4_printk(KERN_INFO, ha, "%s: HW State: "
2566                                     "NEED RESET!\n", __func__);
2567                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2568                                 qla4xxx_wake_dpc(ha);
2569                         }
2570                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
2571                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
2572                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
2573                             __func__);
2574                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
2575                         qla4xxx_wake_dpc(ha);
2576                 } else  {
2577                         /* Check firmware health */
2578                         if (qla4_8xxx_check_fw_alive(ha))
2579                                 qla4_8xxx_process_fw_error(ha);
2580                 }
2581         }
2582 }
2583
2584 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
2585 {
2586         struct iscsi_session *sess;
2587         struct ddb_entry *ddb_entry;
2588         struct scsi_qla_host *ha;
2589
2590         sess = cls_sess->dd_data;
2591         ddb_entry = sess->dd_data;
2592         ha = ddb_entry->ha;
2593
2594         if (!(ddb_entry->ddb_type == FLASH_DDB))
2595                 return;
2596
2597         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
2598             !iscsi_is_session_online(cls_sess)) {
2599                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
2600                     INVALID_ENTRY) {
2601                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
2602                                         0) {
2603                                 atomic_set(&ddb_entry->retry_relogin_timer,
2604                                            INVALID_ENTRY);
2605                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2606                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
2607                                 DEBUG2(ql4_printk(KERN_INFO, ha,
2608                                        "%s: index [%d] login device\n",
2609                                         __func__, ddb_entry->fw_ddb_index));
2610                         } else
2611                                 atomic_dec(&ddb_entry->retry_relogin_timer);
2612                 }
2613         }
2614
2615         /* Wait for relogin to timeout */
2616         if (atomic_read(&ddb_entry->relogin_timer) &&
2617             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
2618                 /*
2619                  * If the relogin times out and the device is
2620                  * still NOT ONLINE then try and relogin again.
2621                  */
2622                 if (!iscsi_is_session_online(cls_sess)) {
2623                         /* Reset retry relogin timer */
2624                         atomic_inc(&ddb_entry->relogin_retry_count);
2625                         DEBUG2(ql4_printk(KERN_INFO, ha,
2626                                 "%s: index[%d] relogin timed out-retrying"
2627                                 " relogin (%d), retry (%d)\n", __func__,
2628                                 ddb_entry->fw_ddb_index,
2629                                 atomic_read(&ddb_entry->relogin_retry_count),
2630                                 ddb_entry->default_time2wait + 4));
2631                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2632                         atomic_set(&ddb_entry->retry_relogin_timer,
2633                                    ddb_entry->default_time2wait + 4);
2634                 }
2635         }
2636 }
2637
2638 /**
2639  * qla4xxx_timer - checks every second for work to do.
2640  * @ha: Pointer to host adapter structure.
2641  **/
2642 static void qla4xxx_timer(struct scsi_qla_host *ha)
2643 {
2644         int start_dpc = 0;
2645         uint16_t w;
2646
2647         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
2648
2649         /* If we are in the middle of AER/EEH processing
2650          * skip any processing and reschedule the timer
2651          */
2652         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2653                 mod_timer(&ha->timer, jiffies + HZ);
2654                 return;
2655         }
2656
2657         /* Hardware read to trigger an EEH error during mailbox waits. */
2658         if (!pci_channel_offline(ha->pdev))
2659                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
2660
2661         if (is_qla80XX(ha))
2662                 qla4_8xxx_watchdog(ha);
2663
2664         if (is_qla40XX(ha)) {
2665                 /* Check for heartbeat interval. */
2666                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
2667                     ha->heartbeat_interval != 0) {
2668                         ha->seconds_since_last_heartbeat++;
2669                         if (ha->seconds_since_last_heartbeat >
2670                             ha->heartbeat_interval + 2)
2671                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2672                 }
2673         }
2674
2675         /* Process any deferred work. */
2676         if (!list_empty(&ha->work_list))
2677                 start_dpc++;
2678
2679         /* Wakeup the dpc routine for this adapter, if needed. */
2680         if (start_dpc ||
2681              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2682              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
2683              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
2684              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
2685              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2686              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
2687              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
2688              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2689              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2690              test_bit(DPC_AEN, &ha->dpc_flags)) {
2691                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
2692                               " - dpc flags = 0x%lx\n",
2693                               ha->host_no, __func__, ha->dpc_flags));
2694                 qla4xxx_wake_dpc(ha);
2695         }
2696
2697         /* Reschedule timer thread to call us back in one second */
2698         mod_timer(&ha->timer, jiffies + HZ);
2699
2700         DEBUG2(ha->seconds_since_last_intr++);
2701 }
2702
2703 /**
2704  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
2705  * @ha: Pointer to host adapter structure.
2706  *
2707  * This routine stalls the driver until all outstanding commands are returned.
2708  * Caller must release the Hardware Lock prior to calling this routine.
2709  **/
2710 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
2711 {
2712         uint32_t index = 0;
2713         unsigned long flags;
2714         struct scsi_cmnd *cmd;
2715
2716         unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
2717
2718         DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
2719             "complete\n", WAIT_CMD_TOV));
2720
2721         while (!time_after_eq(jiffies, wtime)) {
2722                 spin_lock_irqsave(&ha->hardware_lock, flags);
2723                 /* Find a command that hasn't completed. */
2724                 for (index = 0; index < ha->host->can_queue; index++) {
2725                         cmd = scsi_host_find_tag(ha->host, index);
2726                         /*
2727                          * We cannot just check if the index is valid,
2728                          * becase if we are run from the scsi eh, then
2729                          * the scsi/block layer is going to prevent
2730                          * the tag from being released.
2731                          */
2732                         if (cmd != NULL && CMD_SP(cmd))
2733                                 break;
2734                 }
2735                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2736
2737                 /* If No Commands are pending, wait is complete */
2738                 if (index == ha->host->can_queue)
2739                         return QLA_SUCCESS;
2740
2741                 msleep(1000);
2742         }
2743         /* If we timed out on waiting for commands to come back
2744          * return ERROR. */
2745         return QLA_ERROR;
2746 }
2747
2748 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
2749 {
2750         uint32_t ctrl_status;
2751         unsigned long flags = 0;
2752
2753         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
2754
2755         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
2756                 return QLA_ERROR;
2757
2758         spin_lock_irqsave(&ha->hardware_lock, flags);
2759
2760         /*
2761          * If the SCSI Reset Interrupt bit is set, clear it.
2762          * Otherwise, the Soft Reset won't work.
2763          */
2764         ctrl_status = readw(&ha->reg->ctrl_status);
2765         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
2766                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2767
2768         /* Issue Soft Reset */
2769         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
2770         readl(&ha->reg->ctrl_status);
2771
2772         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2773         return QLA_SUCCESS;
2774 }
2775
2776 /**
2777  * qla4xxx_soft_reset - performs soft reset.
2778  * @ha: Pointer to host adapter structure.
2779  **/
2780 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
2781 {
2782         uint32_t max_wait_time;
2783         unsigned long flags = 0;
2784         int status;
2785         uint32_t ctrl_status;
2786
2787         status = qla4xxx_hw_reset(ha);
2788         if (status != QLA_SUCCESS)
2789                 return status;
2790
2791         status = QLA_ERROR;
2792         /* Wait until the Network Reset Intr bit is cleared */
2793         max_wait_time = RESET_INTR_TOV;
2794         do {
2795                 spin_lock_irqsave(&ha->hardware_lock, flags);
2796                 ctrl_status = readw(&ha->reg->ctrl_status);
2797                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2798
2799                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
2800                         break;
2801
2802                 msleep(1000);
2803         } while ((--max_wait_time));
2804
2805         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
2806                 DEBUG2(printk(KERN_WARNING
2807                               "scsi%ld: Network Reset Intr not cleared by "
2808                               "Network function, clearing it now!\n",
2809                               ha->host_no));
2810                 spin_lock_irqsave(&ha->hardware_lock, flags);
2811                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
2812                 readl(&ha->reg->ctrl_status);
2813                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2814         }
2815
2816         /* Wait until the firmware tells us the Soft Reset is done */
2817         max_wait_time = SOFT_RESET_TOV;
2818         do {
2819                 spin_lock_irqsave(&ha->hardware_lock, flags);
2820                 ctrl_status = readw(&ha->reg->ctrl_status);
2821                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2822
2823                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
2824                         status = QLA_SUCCESS;
2825                         break;
2826                 }
2827
2828                 msleep(1000);
2829         } while ((--max_wait_time));
2830
2831         /*
2832          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
2833          * after the soft reset has taken place.
2834          */
2835         spin_lock_irqsave(&ha->hardware_lock, flags);
2836         ctrl_status = readw(&ha->reg->ctrl_status);
2837         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
2838                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2839                 readl(&ha->reg->ctrl_status);
2840         }
2841         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2842
2843         /* If soft reset fails then most probably the bios on other
2844          * function is also enabled.
2845          * Since the initialization is sequential the other fn
2846          * wont be able to acknowledge the soft reset.
2847          * Issue a force soft reset to workaround this scenario.
2848          */
2849         if (max_wait_time == 0) {
2850                 /* Issue Force Soft Reset */
2851                 spin_lock_irqsave(&ha->hardware_lock, flags);
2852                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
2853                 readl(&ha->reg->ctrl_status);
2854                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2855                 /* Wait until the firmware tells us the Soft Reset is done */
2856                 max_wait_time = SOFT_RESET_TOV;
2857                 do {
2858                         spin_lock_irqsave(&ha->hardware_lock, flags);
2859                         ctrl_status = readw(&ha->reg->ctrl_status);
2860                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2861
2862                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
2863                                 status = QLA_SUCCESS;
2864                                 break;
2865                         }
2866
2867                         msleep(1000);
2868                 } while ((--max_wait_time));
2869         }
2870
2871         return status;
2872 }
2873
2874 /**
2875  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
2876  * @ha: Pointer to host adapter structure.
2877  * @res: returned scsi status
2878  *
2879  * This routine is called just prior to a HARD RESET to return all
2880  * outstanding commands back to the Operating System.
2881  * Caller should make sure that the following locks are released
2882  * before this calling routine: Hardware lock, and io_request_lock.
2883  **/
2884 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
2885 {
2886         struct srb *srb;
2887         int i;
2888         unsigned long flags;
2889
2890         spin_lock_irqsave(&ha->hardware_lock, flags);
2891         for (i = 0; i < ha->host->can_queue; i++) {
2892                 srb = qla4xxx_del_from_active_array(ha, i);
2893                 if (srb != NULL) {
2894                         srb->cmd->result = res;
2895                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
2896                 }
2897         }
2898         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2899 }
2900
2901 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
2902 {
2903         clear_bit(AF_ONLINE, &ha->flags);
2904
2905         /* Disable the board */
2906         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
2907
2908         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
2909         qla4xxx_mark_all_devices_missing(ha);
2910         clear_bit(AF_INIT_DONE, &ha->flags);
2911 }
2912
2913 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
2914 {
2915         struct iscsi_session *sess;
2916         struct ddb_entry *ddb_entry;
2917
2918         sess = cls_session->dd_data;
2919         ddb_entry = sess->dd_data;
2920         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
2921
2922         if (ddb_entry->ddb_type == FLASH_DDB)
2923                 iscsi_block_session(ddb_entry->sess);
2924         else
2925                 iscsi_session_failure(cls_session->dd_data,
2926                                       ISCSI_ERR_CONN_FAILED);
2927 }
2928
2929 /**
2930  * qla4xxx_recover_adapter - recovers adapter after a fatal error
2931  * @ha: Pointer to host adapter structure.
2932  **/
2933 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
2934 {
2935         int status = QLA_ERROR;
2936         uint8_t reset_chip = 0;
2937         uint32_t dev_state;
2938         unsigned long wait;
2939
2940         /* Stall incoming I/O until we are done */
2941         scsi_block_requests(ha->host);
2942         clear_bit(AF_ONLINE, &ha->flags);
2943         clear_bit(AF_LINK_UP, &ha->flags);
2944
2945         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
2946
2947         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2948
2949         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
2950
2951         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
2952                 reset_chip = 1;
2953
2954         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
2955          * do not reset adapter, jump to initialize_adapter */
2956         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
2957                 status = QLA_SUCCESS;
2958                 goto recover_ha_init_adapter;
2959         }
2960
2961         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
2962          * from eh_host_reset or ioctl module */
2963         if (is_qla80XX(ha) && !reset_chip &&
2964             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
2965
2966                 DEBUG2(ql4_printk(KERN_INFO, ha,
2967                     "scsi%ld: %s - Performing stop_firmware...\n",
2968                     ha->host_no, __func__));
2969                 status = ha->isp_ops->reset_firmware(ha);
2970                 if (status == QLA_SUCCESS) {
2971                         if (!test_bit(AF_FW_RECOVERY, &ha->flags))
2972                                 qla4xxx_cmd_wait(ha);
2973                         ha->isp_ops->disable_intrs(ha);
2974                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2975                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2976                 } else {
2977                         /* If the stop_firmware fails then
2978                          * reset the entire chip */
2979                         reset_chip = 1;
2980                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2981                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
2982                 }
2983         }
2984
2985         /* Issue full chip reset if recovering from a catastrophic error,
2986          * or if stop_firmware fails for ISP-8xxx.
2987          * This is the default case for ISP-4xxx */
2988         if (is_qla40XX(ha) || reset_chip) {
2989                 if (is_qla40XX(ha))
2990                         goto chip_reset;
2991
2992                 /* Check if 8XXX firmware is alive or not
2993                  * We may have arrived here from NEED_RESET
2994                  * detection only */
2995                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
2996                         goto chip_reset;
2997
2998                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
2999                 while (time_before(jiffies, wait)) {
3000                         if (qla4_8xxx_check_fw_alive(ha)) {
3001                                 qla4xxx_mailbox_premature_completion(ha);
3002                                 break;
3003                         }
3004
3005                         set_current_state(TASK_UNINTERRUPTIBLE);
3006                         schedule_timeout(HZ);
3007                 }
3008 chip_reset:
3009                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3010                         qla4xxx_cmd_wait(ha);
3011
3012                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3013                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3014                 DEBUG2(ql4_printk(KERN_INFO, ha,
3015                     "scsi%ld: %s - Performing chip reset..\n",
3016                     ha->host_no, __func__));
3017                 status = ha->isp_ops->reset_chip(ha);
3018         }
3019
3020         /* Flush any pending ddb changed AENs */
3021         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3022
3023 recover_ha_init_adapter:
3024         /* Upon successful firmware/chip reset, re-initialize the adapter */
3025         if (status == QLA_SUCCESS) {
3026                 /* For ISP-4xxx, force function 1 to always initialize
3027                  * before function 3 to prevent both funcions from
3028                  * stepping on top of the other */
3029                 if (is_qla40XX(ha) && (ha->mac_index == 3))
3030                         ssleep(6);
3031
3032                 /* NOTE: AF_ONLINE flag set upon successful completion of
3033                  *       qla4xxx_initialize_adapter */
3034                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
3035         }
3036
3037         /* Retry failed adapter initialization, if necessary
3038          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
3039          * case to prevent ping-pong resets between functions */
3040         if (!test_bit(AF_ONLINE, &ha->flags) &&
3041             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3042                 /* Adapter initialization failed, see if we can retry
3043                  * resetting the ha.
3044                  * Since we don't want to block the DPC for too long
3045                  * with multiple resets in the same thread,
3046                  * utilize DPC to retry */
3047                 if (is_qla80XX(ha)) {
3048                         ha->isp_ops->idc_lock(ha);
3049                         dev_state = qla4_8xxx_rd_direct(ha,
3050                                                         QLA8XXX_CRB_DEV_STATE);
3051                         ha->isp_ops->idc_unlock(ha);
3052                         if (dev_state == QLA8XXX_DEV_FAILED) {
3053                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
3054                                            "recover adapter. H/W is in Failed "
3055                                            "state\n", __func__);
3056                                 qla4xxx_dead_adapter_cleanup(ha);
3057                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3058                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3059                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3060                                                 &ha->dpc_flags);
3061                                 status = QLA_ERROR;
3062
3063                                 goto exit_recover;
3064                         }
3065                 }
3066
3067                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
3068                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
3069                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
3070                                       "(%d) more times\n", ha->host_no,
3071                                       ha->retry_reset_ha_cnt));
3072                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3073                         status = QLA_ERROR;
3074                 } else {
3075                         if (ha->retry_reset_ha_cnt > 0) {
3076                                 /* Schedule another Reset HA--DPC will retry */
3077                                 ha->retry_reset_ha_cnt--;
3078                                 DEBUG2(printk("scsi%ld: recover adapter - "
3079                                               "retry remaining %d\n",
3080                                               ha->host_no,
3081                                               ha->retry_reset_ha_cnt));
3082                                 status = QLA_ERROR;
3083                         }
3084
3085                         if (ha->retry_reset_ha_cnt == 0) {
3086                                 /* Recover adapter retries have been exhausted.
3087                                  * Adapter DEAD */
3088                                 DEBUG2(printk("scsi%ld: recover adapter "
3089                                               "failed - board disabled\n",
3090                                               ha->host_no));
3091                                 qla4xxx_dead_adapter_cleanup(ha);
3092                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3093                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3094                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3095                                           &ha->dpc_flags);
3096                                 status = QLA_ERROR;
3097                         }
3098                 }
3099         } else {
3100                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3101                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3102                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3103         }
3104
3105 exit_recover:
3106         ha->adapter_error_count++;
3107
3108         if (test_bit(AF_ONLINE, &ha->flags))
3109                 ha->isp_ops->enable_intrs(ha);
3110
3111         scsi_unblock_requests(ha->host);
3112
3113         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3114         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
3115             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
3116
3117         return status;
3118 }
3119
3120 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
3121 {
3122         struct iscsi_session *sess;
3123         struct ddb_entry *ddb_entry;
3124         struct scsi_qla_host *ha;
3125
3126         sess = cls_session->dd_data;
3127         ddb_entry = sess->dd_data;
3128         ha = ddb_entry->ha;
3129         if (!iscsi_is_session_online(cls_session)) {
3130                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
3131                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3132                                    " unblock session\n", ha->host_no, __func__,
3133                                    ddb_entry->fw_ddb_index);
3134                         iscsi_unblock_session(ddb_entry->sess);
3135                 } else {
3136                         /* Trigger relogin */
3137                         if (ddb_entry->ddb_type == FLASH_DDB) {
3138                                 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
3139                                         qla4xxx_arm_relogin_timer(ddb_entry);
3140                         } else
3141                                 iscsi_session_failure(cls_session->dd_data,
3142                                                       ISCSI_ERR_CONN_FAILED);
3143                 }
3144         }
3145 }
3146
3147 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
3148 {
3149         struct iscsi_session *sess;
3150         struct ddb_entry *ddb_entry;
3151         struct scsi_qla_host *ha;
3152
3153         sess = cls_session->dd_data;
3154         ddb_entry = sess->dd_data;
3155         ha = ddb_entry->ha;
3156         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3157                    " unblock session\n", ha->host_no, __func__,
3158                    ddb_entry->fw_ddb_index);
3159
3160         iscsi_unblock_session(ddb_entry->sess);
3161
3162         /* Start scan target */
3163         if (test_bit(AF_ONLINE, &ha->flags)) {
3164                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3165                            " start scan\n", ha->host_no, __func__,
3166                            ddb_entry->fw_ddb_index);
3167                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
3168         }
3169         return QLA_SUCCESS;
3170 }
3171
3172 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
3173 {
3174         struct iscsi_session *sess;
3175         struct ddb_entry *ddb_entry;
3176         struct scsi_qla_host *ha;
3177         int status = QLA_SUCCESS;
3178
3179         sess = cls_session->dd_data;
3180         ddb_entry = sess->dd_data;
3181         ha = ddb_entry->ha;
3182         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3183                    " unblock user space session\n", ha->host_no, __func__,
3184                    ddb_entry->fw_ddb_index);
3185
3186         if (!iscsi_is_session_online(cls_session)) {
3187                 iscsi_conn_start(ddb_entry->conn);
3188                 iscsi_conn_login_event(ddb_entry->conn,
3189                                        ISCSI_CONN_STATE_LOGGED_IN);
3190         } else {
3191                 ql4_printk(KERN_INFO, ha,
3192                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
3193                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
3194                            cls_session->sid);
3195                 status = QLA_ERROR;
3196         }
3197
3198         return status;
3199 }
3200
3201 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
3202 {
3203         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
3204 }
3205
3206 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3207 {
3208         uint16_t relogin_timer;
3209         struct iscsi_session *sess;
3210         struct ddb_entry *ddb_entry;
3211         struct scsi_qla_host *ha;
3212
3213         sess = cls_sess->dd_data;
3214         ddb_entry = sess->dd_data;
3215         ha = ddb_entry->ha;
3216
3217         relogin_timer = max(ddb_entry->default_relogin_timeout,
3218                             (uint16_t)RELOGIN_TOV);
3219         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
3220
3221         DEBUG2(ql4_printk(KERN_INFO, ha,
3222                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
3223                           ddb_entry->fw_ddb_index, relogin_timer));
3224
3225         qla4xxx_login_flash_ddb(cls_sess);
3226 }
3227
3228 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
3229 {
3230         struct iscsi_session *sess;
3231         struct ddb_entry *ddb_entry;
3232         struct scsi_qla_host *ha;
3233
3234         sess = cls_sess->dd_data;
3235         ddb_entry = sess->dd_data;
3236         ha = ddb_entry->ha;
3237
3238         if (!(ddb_entry->ddb_type == FLASH_DDB))
3239                 return;
3240
3241         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
3242             !iscsi_is_session_online(cls_sess)) {
3243                 DEBUG2(ql4_printk(KERN_INFO, ha,
3244                                   "relogin issued\n"));
3245                 qla4xxx_relogin_flash_ddb(cls_sess);
3246         }
3247 }
3248
3249 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
3250 {
3251         if (ha->dpc_thread)
3252                 queue_work(ha->dpc_thread, &ha->dpc_work);
3253 }
3254
3255 static struct qla4_work_evt *
3256 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
3257                    enum qla4_work_type type)
3258 {
3259         struct qla4_work_evt *e;
3260         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
3261
3262         e = kzalloc(size, GFP_ATOMIC);
3263         if (!e)
3264                 return NULL;
3265
3266         INIT_LIST_HEAD(&e->list);
3267         e->type = type;
3268         return e;
3269 }
3270
3271 static void qla4xxx_post_work(struct scsi_qla_host *ha,
3272                              struct qla4_work_evt *e)
3273 {
3274         unsigned long flags;
3275
3276         spin_lock_irqsave(&ha->work_lock, flags);
3277         list_add_tail(&e->list, &ha->work_list);
3278         spin_unlock_irqrestore(&ha->work_lock, flags);
3279         qla4xxx_wake_dpc(ha);
3280 }
3281
3282 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
3283                           enum iscsi_host_event_code aen_code,
3284                           uint32_t data_size, uint8_t *data)
3285 {
3286         struct qla4_work_evt *e;
3287
3288         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
3289         if (!e)
3290                 return QLA_ERROR;
3291
3292         e->u.aen.code = aen_code;
3293         e->u.aen.data_size = data_size;
3294         memcpy(e->u.aen.data, data, data_size);
3295
3296         qla4xxx_post_work(ha, e);
3297
3298         return QLA_SUCCESS;
3299 }
3300
3301 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
3302                                uint32_t status, uint32_t pid,
3303                                uint32_t data_size, uint8_t *data)
3304 {
3305         struct qla4_work_evt *e;
3306
3307         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
3308         if (!e)
3309                 return QLA_ERROR;
3310
3311         e->u.ping.status = status;
3312         e->u.ping.pid = pid;
3313         e->u.ping.data_size = data_size;
3314         memcpy(e->u.ping.data, data, data_size);
3315
3316         qla4xxx_post_work(ha, e);
3317
3318         return QLA_SUCCESS;
3319 }
3320
3321 static void qla4xxx_do_work(struct scsi_qla_host *ha)
3322 {
3323         struct qla4_work_evt *e, *tmp;
3324         unsigned long flags;
3325         LIST_HEAD(work);
3326
3327         spin_lock_irqsave(&ha->work_lock, flags);
3328         list_splice_init(&ha->work_list, &work);
3329         spin_unlock_irqrestore(&ha->work_lock, flags);
3330
3331         list_for_each_entry_safe(e, tmp, &work, list) {
3332                 list_del_init(&e->list);
3333
3334                 switch (e->type) {
3335                 case QLA4_EVENT_AEN:
3336                         iscsi_post_host_event(ha->host_no,
3337                                               &qla4xxx_iscsi_transport,
3338                                               e->u.aen.code,
3339                                               e->u.aen.data_size,
3340                                               e->u.aen.data);
3341                         break;
3342                 case QLA4_EVENT_PING_STATUS:
3343                         iscsi_ping_comp_event(ha->host_no,
3344                                               &qla4xxx_iscsi_transport,
3345                                               e->u.ping.status,
3346                                               e->u.ping.pid,
3347                                               e->u.ping.data_size,
3348                                               e->u.ping.data);
3349                         break;
3350                 default:
3351                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
3352                                    "supported", e->type);
3353                 }
3354                 kfree(e);
3355         }
3356 }
3357
3358 /**
3359  * qla4xxx_do_dpc - dpc routine
3360  * @data: in our case pointer to adapter structure
3361  *
3362  * This routine is a task that is schedule by the interrupt handler
3363  * to perform the background processing for interrupts.  We put it
3364  * on a task queue that is consumed whenever the scheduler runs; that's
3365  * so you can do anything (i.e. put the process to sleep etc).  In fact,
3366  * the mid-level tries to sleep when it reaches the driver threshold
3367  * "host->can_queue". This can cause a panic if we were in our interrupt code.
3368  **/
3369 static void qla4xxx_do_dpc(struct work_struct *work)
3370 {
3371         struct scsi_qla_host *ha =
3372                 container_of(work, struct scsi_qla_host, dpc_work);
3373         int status = QLA_ERROR;
3374
3375         DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
3376             "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
3377             ha->host_no, __func__, ha->flags, ha->dpc_flags))
3378
3379         /* Initialization not yet finished. Don't do anything yet. */
3380         if (!test_bit(AF_INIT_DONE, &ha->flags))
3381                 return;
3382
3383         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3384                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
3385                     ha->host_no, __func__, ha->flags));
3386                 return;
3387         }
3388
3389         /* post events to application */
3390         qla4xxx_do_work(ha);
3391
3392         if (is_qla80XX(ha)) {
3393                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
3394                         ha->isp_ops->idc_lock(ha);
3395                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
3396                                             QLA8XXX_DEV_FAILED);
3397                         ha->isp_ops->idc_unlock(ha);
3398                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
3399                         qla4_8xxx_device_state_handler(ha);
3400                 }
3401                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3402                         qla4_8xxx_need_qsnt_handler(ha);
3403                 }
3404         }
3405
3406         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
3407             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3408             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3409             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
3410                 if ((is_qla8022(ha) && ql4xdontresethba) ||
3411                     (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
3412                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
3413                             ha->host_no, __func__));
3414                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3415                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3416                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3417                         goto dpc_post_reset_ha;
3418                 }
3419                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3420                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
3421                         qla4xxx_recover_adapter(ha);
3422
3423                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3424                         uint8_t wait_time = RESET_INTR_TOV;
3425
3426                         while ((readw(&ha->reg->ctrl_status) &
3427                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
3428                                 if (--wait_time == 0)
3429                                         break;
3430                                 msleep(1000);
3431                         }
3432                         if (wait_time == 0)
3433                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
3434                                               "bit not cleared-- resetting\n",
3435                                               ha->host_no, __func__));
3436                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3437                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
3438                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3439                                 status = qla4xxx_recover_adapter(ha);
3440                         }
3441                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3442                         if (status == QLA_SUCCESS)
3443                                 ha->isp_ops->enable_intrs(ha);
3444                 }
3445         }
3446
3447 dpc_post_reset_ha:
3448         /* ---- process AEN? --- */
3449         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
3450                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
3451
3452         /* ---- Get DHCP IP Address? --- */
3453         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
3454                 qla4xxx_get_dhcp_ip_address(ha);
3455
3456         /* ---- relogin device? --- */
3457         if (adapter_up(ha) &&
3458             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
3459                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
3460         }
3461
3462         /* ---- link change? --- */
3463         if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
3464                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
3465                         /* ---- link down? --- */
3466                         qla4xxx_mark_all_devices_missing(ha);
3467                 } else {
3468                         /* ---- link up? --- *
3469                          * F/W will auto login to all devices ONLY ONCE after
3470                          * link up during driver initialization and runtime
3471                          * fatal error recovery.  Therefore, the driver must
3472                          * manually relogin to devices when recovering from
3473                          * connection failures, logouts, expired KATO, etc. */
3474                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
3475                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
3476                                 iscsi_host_for_each_session(ha->host,
3477                                                 qla4xxx_login_flash_ddb);
3478                         } else
3479                                 qla4xxx_relogin_all_devices(ha);
3480                 }
3481         }
3482 }
3483
3484 /**
3485  * qla4xxx_free_adapter - release the adapter
3486  * @ha: pointer to adapter structure
3487  **/
3488 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
3489 {
3490         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3491
3492         if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
3493                 /* Turn-off interrupts on the card. */
3494                 ha->isp_ops->disable_intrs(ha);
3495         }
3496
3497         if (is_qla40XX(ha)) {
3498                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
3499                        &ha->reg->ctrl_status);
3500                 readl(&ha->reg->ctrl_status);
3501         } else if (is_qla8022(ha)) {
3502                 writel(0, &ha->qla4_82xx_reg->host_int);
3503                 readl(&ha->qla4_82xx_reg->host_int);
3504         } else if (is_qla8032(ha)) {
3505                 writel(0, &ha->qla4_83xx_reg->risc_intr);
3506                 readl(&ha->qla4_83xx_reg->risc_intr);
3507         }
3508
3509         /* Remove timer thread, if present */
3510         if (ha->timer_active)
3511                 qla4xxx_stop_timer(ha);
3512
3513         /* Kill the kernel thread for this host */
3514         if (ha->dpc_thread)
3515                 destroy_workqueue(ha->dpc_thread);
3516
3517         /* Kill the kernel thread for this host */
3518         if (ha->task_wq)
3519                 destroy_workqueue(ha->task_wq);
3520
3521         /* Put firmware in known state */
3522         ha->isp_ops->reset_firmware(ha);
3523
3524         if (is_qla80XX(ha)) {
3525                 ha->isp_ops->idc_lock(ha);
3526                 qla4_8xxx_clear_drv_active(ha);
3527                 ha->isp_ops->idc_unlock(ha);
3528         }
3529
3530         /* Detach interrupts */
3531         if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
3532                 qla4xxx_free_irqs(ha);
3533
3534         /* free extra memory */
3535         qla4xxx_mem_free(ha);
3536 }
3537
3538 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
3539 {
3540         int status = 0;
3541         unsigned long mem_base, mem_len, db_base, db_len;
3542         struct pci_dev *pdev = ha->pdev;
3543
3544         status = pci_request_regions(pdev, DRIVER_NAME);
3545         if (status) {
3546                 printk(KERN_WARNING
3547                     "scsi(%ld) Failed to reserve PIO regions (%s) "
3548                     "status=%d\n", ha->host_no, pci_name(pdev), status);
3549                 goto iospace_error_exit;
3550         }
3551
3552         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
3553             __func__, pdev->revision));
3554         ha->revision_id = pdev->revision;
3555
3556         /* remap phys address */
3557         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
3558         mem_len = pci_resource_len(pdev, 0);
3559         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
3560             __func__, mem_base, mem_len));
3561
3562         /* mapping of pcibase pointer */
3563         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
3564         if (!ha->nx_pcibase) {
3565                 printk(KERN_ERR
3566                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
3567                 pci_release_regions(ha->pdev);
3568                 goto iospace_error_exit;
3569         }
3570
3571         /* Mapping of IO base pointer, door bell read and write pointer */
3572
3573         /* mapping of IO base pointer */
3574         if (is_qla8022(ha)) {
3575                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
3576                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
3577                                      (ha->pdev->devfn << 11));
3578                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
3579                                     QLA82XX_CAM_RAM_DB2);
3580         } else if (is_qla8032(ha)) {
3581                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
3582                                     ((uint8_t *)ha->nx_pcibase);
3583         }
3584
3585         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
3586         db_len = pci_resource_len(pdev, 4);
3587
3588         return 0;
3589 iospace_error_exit:
3590         return -ENOMEM;
3591 }
3592
3593 /***
3594  * qla4xxx_iospace_config - maps registers
3595  * @ha: pointer to adapter structure
3596  *
3597  * This routines maps HBA's registers from the pci address space
3598  * into the kernel virtual address space for memory mapped i/o.
3599  **/
3600 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
3601 {
3602         unsigned long pio, pio_len, pio_flags;
3603         unsigned long mmio, mmio_len, mmio_flags;
3604
3605         pio = pci_resource_start(ha->pdev, 0);
3606         pio_len = pci_resource_len(ha->pdev, 0);
3607         pio_flags = pci_resource_flags(ha->pdev, 0);
3608         if (pio_flags & IORESOURCE_IO) {
3609                 if (pio_len < MIN_IOBASE_LEN) {
3610                         ql4_printk(KERN_WARNING, ha,
3611                                 "Invalid PCI I/O region size\n");
3612                         pio = 0;
3613                 }
3614         } else {
3615                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
3616                 pio = 0;
3617         }
3618
3619         /* Use MMIO operations for all accesses. */
3620         mmio = pci_resource_start(ha->pdev, 1);
3621         mmio_len = pci_resource_len(ha->pdev, 1);
3622         mmio_flags = pci_resource_flags(ha->pdev, 1);
3623
3624         if (!(mmio_flags & IORESOURCE_MEM)) {
3625                 ql4_printk(KERN_ERR, ha,
3626                     "region #0 not an MMIO resource, aborting\n");
3627
3628                 goto iospace_error_exit;
3629         }
3630
3631         if (mmio_len < MIN_IOBASE_LEN) {
3632                 ql4_printk(KERN_ERR, ha,
3633                     "Invalid PCI mem region size, aborting\n");
3634                 goto iospace_error_exit;
3635         }
3636
3637         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
3638                 ql4_printk(KERN_WARNING, ha,
3639                     "Failed to reserve PIO/MMIO regions\n");
3640
3641                 goto iospace_error_exit;
3642         }
3643
3644         ha->pio_address = pio;
3645         ha->pio_length = pio_len;
3646         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
3647         if (!ha->reg) {
3648                 ql4_printk(KERN_ERR, ha,
3649                     "cannot remap MMIO, aborting\n");
3650
3651                 goto iospace_error_exit;
3652         }
3653
3654         return 0;
3655
3656 iospace_error_exit:
3657         return -ENOMEM;
3658 }
3659
3660 static struct isp_operations qla4xxx_isp_ops = {
3661         .iospace_config         = qla4xxx_iospace_config,
3662         .pci_config             = qla4xxx_pci_config,
3663         .disable_intrs          = qla4xxx_disable_intrs,
3664         .enable_intrs           = qla4xxx_enable_intrs,
3665         .start_firmware         = qla4xxx_start_firmware,
3666         .intr_handler           = qla4xxx_intr_handler,
3667         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
3668         .reset_chip             = qla4xxx_soft_reset,
3669         .reset_firmware         = qla4xxx_hw_reset,
3670         .queue_iocb             = qla4xxx_queue_iocb,
3671         .complete_iocb          = qla4xxx_complete_iocb,
3672         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
3673         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
3674         .get_sys_info           = qla4xxx_get_sys_info,
3675         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
3676         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
3677 };
3678
3679 static struct isp_operations qla4_82xx_isp_ops = {
3680         .iospace_config         = qla4_8xxx_iospace_config,
3681         .pci_config             = qla4_8xxx_pci_config,
3682         .disable_intrs          = qla4_82xx_disable_intrs,
3683         .enable_intrs           = qla4_82xx_enable_intrs,
3684         .start_firmware         = qla4_8xxx_load_risc,
3685         .restart_firmware       = qla4_82xx_try_start_fw,
3686         .intr_handler           = qla4_82xx_intr_handler,
3687         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
3688         .need_reset             = qla4_8xxx_need_reset,
3689         .reset_chip             = qla4_82xx_isp_reset,
3690         .reset_firmware         = qla4_8xxx_stop_firmware,
3691         .queue_iocb             = qla4_82xx_queue_iocb,
3692         .complete_iocb          = qla4_82xx_complete_iocb,
3693         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
3694         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
3695         .get_sys_info           = qla4_8xxx_get_sys_info,
3696         .rd_reg_direct          = qla4_82xx_rd_32,
3697         .wr_reg_direct          = qla4_82xx_wr_32,
3698         .rd_reg_indirect        = qla4_82xx_md_rd_32,
3699         .wr_reg_indirect        = qla4_82xx_md_wr_32,
3700         .idc_lock               = qla4_82xx_idc_lock,
3701         .idc_unlock             = qla4_82xx_idc_unlock,
3702         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
3703         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
3704         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
3705 };
3706
3707 static struct isp_operations qla4_83xx_isp_ops = {
3708         .iospace_config         = qla4_8xxx_iospace_config,
3709         .pci_config             = qla4_8xxx_pci_config,
3710         .disable_intrs          = qla4_83xx_disable_intrs,
3711         .enable_intrs           = qla4_83xx_enable_intrs,
3712         .start_firmware         = qla4_8xxx_load_risc,
3713         .restart_firmware       = qla4_83xx_start_firmware,
3714         .intr_handler           = qla4_83xx_intr_handler,
3715         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
3716         .need_reset             = qla4_8xxx_need_reset,
3717         .reset_chip             = qla4_83xx_isp_reset,
3718         .reset_firmware         = qla4_8xxx_stop_firmware,
3719         .queue_iocb             = qla4_83xx_queue_iocb,
3720         .complete_iocb          = qla4_83xx_complete_iocb,
3721         .rd_shdw_req_q_out      = qla4_83xx_rd_shdw_req_q_out,
3722         .rd_shdw_rsp_q_in       = qla4_83xx_rd_shdw_rsp_q_in,
3723         .get_sys_info           = qla4_8xxx_get_sys_info,
3724         .rd_reg_direct          = qla4_83xx_rd_reg,
3725         .wr_reg_direct          = qla4_83xx_wr_reg,
3726         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
3727         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
3728         .idc_lock               = qla4_83xx_drv_lock,
3729         .idc_unlock             = qla4_83xx_drv_unlock,
3730         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
3731         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
3732         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
3733 };
3734
3735 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3736 {
3737         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
3738 }
3739
3740 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3741 {
3742         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
3743 }
3744
3745 uint16_t qla4_83xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3746 {
3747         return (uint16_t)le32_to_cpu(readl(&ha->qla4_83xx_reg->req_q_out));
3748 }
3749
3750 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3751 {
3752         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
3753 }
3754
3755 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3756 {
3757         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
3758 }
3759
3760 uint16_t qla4_83xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3761 {
3762         return (uint16_t)le32_to_cpu(readl(&ha->qla4_83xx_reg->rsp_q_in));
3763 }
3764
3765 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
3766 {
3767         struct scsi_qla_host *ha = data;
3768         char *str = buf;
3769         int rc;
3770
3771         switch (type) {
3772         case ISCSI_BOOT_ETH_FLAGS:
3773                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3774                 break;
3775         case ISCSI_BOOT_ETH_INDEX:
3776                 rc = sprintf(str, "0\n");
3777                 break;
3778         case ISCSI_BOOT_ETH_MAC:
3779                 rc = sysfs_format_mac(str, ha->my_mac,
3780                                       MAC_ADDR_LEN);
3781                 break;
3782         default:
3783                 rc = -ENOSYS;
3784                 break;
3785         }
3786         return rc;
3787 }
3788
3789 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
3790 {
3791         int rc;
3792
3793         switch (type) {
3794         case ISCSI_BOOT_ETH_FLAGS:
3795         case ISCSI_BOOT_ETH_MAC:
3796         case ISCSI_BOOT_ETH_INDEX:
3797                 rc = S_IRUGO;
3798                 break;
3799         default:
3800                 rc = 0;
3801                 break;
3802         }
3803         return rc;
3804 }
3805
3806 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
3807 {
3808         struct scsi_qla_host *ha = data;
3809         char *str = buf;
3810         int rc;
3811
3812         switch (type) {
3813         case ISCSI_BOOT_INI_INITIATOR_NAME:
3814                 rc = sprintf(str, "%s\n", ha->name_string);
3815                 break;
3816         default:
3817                 rc = -ENOSYS;
3818                 break;
3819         }
3820         return rc;
3821 }
3822
3823 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
3824 {
3825         int rc;
3826
3827         switch (type) {
3828         case ISCSI_BOOT_INI_INITIATOR_NAME:
3829                 rc = S_IRUGO;
3830                 break;
3831         default:
3832                 rc = 0;
3833                 break;
3834         }
3835         return rc;
3836 }
3837
3838 static ssize_t
3839 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
3840                            char *buf)
3841 {
3842         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
3843         char *str = buf;
3844         int rc;
3845
3846         switch (type) {
3847         case ISCSI_BOOT_TGT_NAME:
3848                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
3849                 break;
3850         case ISCSI_BOOT_TGT_IP_ADDR:
3851                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
3852                         rc = sprintf(buf, "%pI4\n",
3853                                      &boot_conn->dest_ipaddr.ip_address);
3854                 else
3855                         rc = sprintf(str, "%pI6\n",
3856                                      &boot_conn->dest_ipaddr.ip_address);
3857                 break;
3858         case ISCSI_BOOT_TGT_PORT:
3859                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
3860                 break;
3861         case ISCSI_BOOT_TGT_CHAP_NAME:
3862                 rc = sprintf(str,  "%.*s\n",
3863                              boot_conn->chap.target_chap_name_length,
3864                              (char *)&boot_conn->chap.target_chap_name);
3865                 break;
3866         case ISCSI_BOOT_TGT_CHAP_SECRET:
3867                 rc = sprintf(str,  "%.*s\n",
3868                              boot_conn->chap.target_secret_length,
3869                              (char *)&boot_conn->chap.target_secret);
3870                 break;
3871         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3872                 rc = sprintf(str,  "%.*s\n",
3873                              boot_conn->chap.intr_chap_name_length,
3874                              (char *)&boot_conn->chap.intr_chap_name);
3875                 break;
3876         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3877                 rc = sprintf(str,  "%.*s\n",
3878                              boot_conn->chap.intr_secret_length,
3879                              (char *)&boot_conn->chap.intr_secret);
3880                 break;
3881         case ISCSI_BOOT_TGT_FLAGS:
3882                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3883                 break;
3884         case ISCSI_BOOT_TGT_NIC_ASSOC:
3885                 rc = sprintf(str, "0\n");
3886                 break;
3887         default:
3888                 rc = -ENOSYS;
3889                 break;
3890         }
3891         return rc;
3892 }
3893
3894 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
3895 {
3896         struct scsi_qla_host *ha = data;
3897         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
3898
3899         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3900 }
3901
3902 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
3903 {
3904         struct scsi_qla_host *ha = data;
3905         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
3906
3907         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3908 }
3909
3910 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
3911 {
3912         int rc;
3913
3914         switch (type) {
3915         case ISCSI_BOOT_TGT_NAME:
3916         case ISCSI_BOOT_TGT_IP_ADDR:
3917         case ISCSI_BOOT_TGT_PORT:
3918         case ISCSI_BOOT_TGT_CHAP_NAME:
3919         case ISCSI_BOOT_TGT_CHAP_SECRET:
3920         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3921         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3922         case ISCSI_BOOT_TGT_NIC_ASSOC:
3923         case ISCSI_BOOT_TGT_FLAGS:
3924                 rc = S_IRUGO;
3925                 break;
3926         default:
3927                 rc = 0;
3928                 break;
3929         }
3930         return rc;
3931 }
3932
3933 static void qla4xxx_boot_release(void *data)
3934 {
3935         struct scsi_qla_host *ha = data;
3936
3937         scsi_host_put(ha->host);
3938 }
3939
3940 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
3941 {
3942         dma_addr_t buf_dma;
3943         uint32_t addr, pri_addr, sec_addr;
3944         uint32_t offset;
3945         uint16_t func_num;
3946         uint8_t val;
3947         uint8_t *buf = NULL;
3948         size_t size = 13 * sizeof(uint8_t);
3949         int ret = QLA_SUCCESS;
3950
3951         func_num = PCI_FUNC(ha->pdev->devfn);
3952
3953         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
3954                    __func__, ha->pdev->device, func_num);
3955
3956         if (is_qla40XX(ha)) {
3957                 if (func_num == 1) {
3958                         addr = NVRAM_PORT0_BOOT_MODE;
3959                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
3960                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
3961                 } else if (func_num == 3) {
3962                         addr = NVRAM_PORT1_BOOT_MODE;
3963                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
3964                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
3965                 } else {
3966                         ret = QLA_ERROR;
3967                         goto exit_boot_info;
3968                 }
3969
3970                 /* Check Boot Mode */
3971                 val = rd_nvram_byte(ha, addr);
3972                 if (!(val & 0x07)) {
3973                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
3974                                           "options : 0x%x\n", __func__, val));
3975                         ret = QLA_ERROR;
3976                         goto exit_boot_info;
3977                 }
3978
3979                 /* get primary valid target index */
3980                 val = rd_nvram_byte(ha, pri_addr);
3981                 if (val & BIT_7)
3982                         ddb_index[0] = (val & 0x7f);
3983
3984                 /* get secondary valid target index */
3985                 val = rd_nvram_byte(ha, sec_addr);
3986                 if (val & BIT_7)
3987                         ddb_index[1] = (val & 0x7f);
3988
3989         } else if (is_qla8022(ha)) {
3990                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
3991                                          &buf_dma, GFP_KERNEL);
3992                 if (!buf) {
3993                         DEBUG2(ql4_printk(KERN_ERR, ha,
3994                                           "%s: Unable to allocate dma buffer\n",
3995                                            __func__));
3996                         ret = QLA_ERROR;
3997                         goto exit_boot_info;
3998                 }
3999
4000                 if (ha->port_num == 0)
4001                         offset = BOOT_PARAM_OFFSET_PORT0;
4002                 else if (ha->port_num == 1)
4003                         offset = BOOT_PARAM_OFFSET_PORT1;
4004                 else {
4005                         ret = QLA_ERROR;
4006                         goto exit_boot_info_free;
4007                 }
4008                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
4009                        offset;
4010                 if (qla4xxx_get_flash(ha, buf_dma, addr,
4011                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
4012                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
4013                                           " failed\n", ha->host_no, __func__));
4014                         ret = QLA_ERROR;
4015                         goto exit_boot_info_free;
4016                 }
4017                 /* Check Boot Mode */
4018                 if (!(buf[1] & 0x07)) {
4019                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
4020                                           " : 0x%x\n", buf[1]));
4021                         ret = QLA_ERROR;
4022                         goto exit_boot_info_free;
4023                 }
4024
4025                 /* get primary valid target index */
4026                 if (buf[2] & BIT_7)
4027                         ddb_index[0] = buf[2] & 0x7f;
4028
4029                 /* get secondary valid target index */
4030                 if (buf[11] & BIT_7)
4031                         ddb_index[1] = buf[11] & 0x7f;
4032         } else {
4033                 ret = QLA_ERROR;
4034                 goto exit_boot_info;
4035         }
4036
4037         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
4038                           " target ID %d\n", __func__, ddb_index[0],
4039                           ddb_index[1]));
4040
4041 exit_boot_info_free:
4042         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
4043 exit_boot_info:
4044         ha->pri_ddb_idx = ddb_index[0];
4045         ha->sec_ddb_idx = ddb_index[1];
4046         return ret;
4047 }
4048
4049 /**
4050  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
4051  * @ha: pointer to adapter structure
4052  * @username: CHAP username to be returned
4053  * @password: CHAP password to be returned
4054  *
4055  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
4056  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
4057  * So from the CHAP cache find the first BIDI CHAP entry and set it
4058  * to the boot record in sysfs.
4059  **/
4060 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
4061                             char *password)
4062 {
4063         int i, ret = -EINVAL;
4064         int max_chap_entries = 0;
4065         struct ql4_chap_table *chap_table;
4066
4067         if (is_qla8022(ha))
4068                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
4069                                                 sizeof(struct ql4_chap_table);
4070         else
4071                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
4072
4073         if (!ha->chap_list) {
4074                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
4075                 return ret;
4076         }
4077
4078         mutex_lock(&ha->chap_sem);
4079         for (i = 0; i < max_chap_entries; i++) {
4080                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
4081                 if (chap_table->cookie !=
4082                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
4083                         continue;
4084                 }
4085
4086                 if (chap_table->flags & BIT_7) /* local */
4087                         continue;
4088
4089                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
4090                         continue;
4091
4092                 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
4093                 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
4094                 ret = 0;
4095                 break;
4096         }
4097         mutex_unlock(&ha->chap_sem);
4098
4099         return ret;
4100 }
4101
4102
4103 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
4104                                    struct ql4_boot_session_info *boot_sess,
4105                                    uint16_t ddb_index)
4106 {
4107         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4108         struct dev_db_entry *fw_ddb_entry;
4109         dma_addr_t fw_ddb_entry_dma;
4110         uint16_t idx;
4111         uint16_t options;
4112         int ret = QLA_SUCCESS;
4113
4114         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4115                                           &fw_ddb_entry_dma, GFP_KERNEL);
4116         if (!fw_ddb_entry) {
4117                 DEBUG2(ql4_printk(KERN_ERR, ha,
4118                                   "%s: Unable to allocate dma buffer.\n",
4119                                   __func__));
4120                 ret = QLA_ERROR;
4121                 return ret;
4122         }
4123
4124         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
4125                                    fw_ddb_entry_dma, ddb_index)) {
4126                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
4127                                   "index [%d]\n", __func__, ddb_index));
4128                 ret = QLA_ERROR;
4129                 goto exit_boot_target;
4130         }
4131
4132         /* Update target name and IP from DDB */
4133         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
4134                min(sizeof(boot_sess->target_name),
4135                    sizeof(fw_ddb_entry->iscsi_name)));
4136
4137         options = le16_to_cpu(fw_ddb_entry->options);
4138         if (options & DDB_OPT_IPV6_DEVICE) {
4139                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4140                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
4141         } else {
4142                 boot_conn->dest_ipaddr.ip_type = 0x1;
4143                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4144                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
4145         }
4146
4147         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
4148
4149         /* update chap information */
4150         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4151
4152         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
4153
4154                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
4155
4156                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
4157                                        target_chap_name,
4158                                        (char *)&boot_conn->chap.target_secret,
4159                                        idx);
4160                 if (ret) {
4161                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
4162                         ret = QLA_ERROR;
4163                         goto exit_boot_target;
4164                 }
4165
4166                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4167                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4168         }
4169
4170         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4171
4172                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
4173
4174                 ret = qla4xxx_get_bidi_chap(ha,
4175                                     (char *)&boot_conn->chap.intr_chap_name,
4176                                     (char *)&boot_conn->chap.intr_secret);
4177
4178                 if (ret) {
4179                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
4180                         ret = QLA_ERROR;
4181                         goto exit_boot_target;
4182                 }
4183
4184                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4185                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4186         }
4187
4188 exit_boot_target:
4189         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4190                           fw_ddb_entry, fw_ddb_entry_dma);
4191         return ret;
4192 }
4193
4194 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
4195 {
4196         uint16_t ddb_index[2];
4197         int ret = QLA_ERROR;
4198         int rval;
4199
4200         memset(ddb_index, 0, sizeof(ddb_index));
4201         ddb_index[0] = 0xffff;
4202         ddb_index[1] = 0xffff;
4203         ret = get_fw_boot_info(ha, ddb_index);
4204         if (ret != QLA_SUCCESS) {
4205                 DEBUG2(ql4_printk(KERN_INFO, ha,
4206                                 "%s: No boot target configured.\n", __func__));
4207                 return ret;
4208         }
4209
4210         if (ql4xdisablesysfsboot)
4211                 return QLA_SUCCESS;
4212
4213         if (ddb_index[0] == 0xffff)
4214                 goto sec_target;
4215
4216         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
4217                                       ddb_index[0]);
4218         if (rval != QLA_SUCCESS) {
4219                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
4220                                   "configured\n", __func__));
4221         } else
4222                 ret = QLA_SUCCESS;
4223
4224 sec_target:
4225         if (ddb_index[1] == 0xffff)
4226                 goto exit_get_boot_info;
4227
4228         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
4229                                       ddb_index[1]);
4230         if (rval != QLA_SUCCESS) {
4231                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
4232                                   " configured\n", __func__));
4233         } else
4234                 ret = QLA_SUCCESS;
4235
4236 exit_get_boot_info:
4237         return ret;
4238 }
4239
4240 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
4241 {
4242         struct iscsi_boot_kobj *boot_kobj;
4243
4244         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
4245                 return QLA_ERROR;
4246
4247         if (ql4xdisablesysfsboot) {
4248                 ql4_printk(KERN_INFO, ha,
4249                            "%s: syfsboot disabled - driver will trigger login "
4250                            "and publish session for discovery .\n", __func__);
4251                 return QLA_SUCCESS;
4252         }
4253
4254
4255         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
4256         if (!ha->boot_kset)
4257                 goto kset_free;
4258
4259         if (!scsi_host_get(ha->host))
4260                 goto kset_free;
4261         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
4262                                              qla4xxx_show_boot_tgt_pri_info,
4263                                              qla4xxx_tgt_get_attr_visibility,
4264                                              qla4xxx_boot_release);
4265         if (!boot_kobj)
4266                 goto put_host;
4267
4268         if (!scsi_host_get(ha->host))
4269                 goto kset_free;
4270         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
4271                                              qla4xxx_show_boot_tgt_sec_info,
4272                                              qla4xxx_tgt_get_attr_visibility,
4273                                              qla4xxx_boot_release);
4274         if (!boot_kobj)
4275                 goto put_host;
4276
4277         if (!scsi_host_get(ha->host))
4278                 goto kset_free;
4279         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
4280                                                qla4xxx_show_boot_ini_info,
4281                                                qla4xxx_ini_get_attr_visibility,
4282                                                qla4xxx_boot_release);
4283         if (!boot_kobj)
4284                 goto put_host;
4285
4286         if (!scsi_host_get(ha->host))
4287                 goto kset_free;
4288         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
4289                                                qla4xxx_show_boot_eth_info,
4290                                                qla4xxx_eth_get_attr_visibility,
4291                                                qla4xxx_boot_release);
4292         if (!boot_kobj)
4293                 goto put_host;
4294
4295         return QLA_SUCCESS;
4296
4297 put_host:
4298         scsi_host_put(ha->host);
4299 kset_free:
4300         iscsi_boot_destroy_kset(ha->boot_kset);
4301         return -ENOMEM;
4302 }
4303
4304
4305 /**
4306  * qla4xxx_create chap_list - Create CHAP list from FLASH
4307  * @ha: pointer to adapter structure
4308  *
4309  * Read flash and make a list of CHAP entries, during login when a CHAP entry
4310  * is received, it will be checked in this list. If entry exist then the CHAP
4311  * entry index is set in the DDB. If CHAP entry does not exist in this list
4312  * then a new entry is added in FLASH in CHAP table and the index obtained is
4313  * used in the DDB.
4314  **/
4315 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
4316 {
4317         int rval = 0;
4318         uint8_t *chap_flash_data = NULL;
4319         uint32_t offset;
4320         dma_addr_t chap_dma;
4321         uint32_t chap_size = 0;
4322
4323         if (is_qla40XX(ha))
4324                 chap_size = MAX_CHAP_ENTRIES_40XX  *
4325                                         sizeof(struct ql4_chap_table);
4326         else    /* Single region contains CHAP info for both
4327                  * ports which is divided into half for each port.
4328                  */
4329                 chap_size = ha->hw.flt_chap_size / 2;
4330
4331         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
4332                                           &chap_dma, GFP_KERNEL);
4333         if (!chap_flash_data) {
4334                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
4335                 return;
4336         }
4337         if (is_qla40XX(ha))
4338                 offset = FLASH_CHAP_OFFSET;
4339         else {
4340                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
4341                 if (ha->port_num == 1)
4342                         offset += chap_size;
4343         }
4344
4345         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
4346         if (rval != QLA_SUCCESS)
4347                 goto exit_chap_list;
4348
4349         if (ha->chap_list == NULL)
4350                 ha->chap_list = vmalloc(chap_size);
4351         if (ha->chap_list == NULL) {
4352                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
4353                 goto exit_chap_list;
4354         }
4355
4356         memcpy(ha->chap_list, chap_flash_data, chap_size);
4357
4358 exit_chap_list:
4359         dma_free_coherent(&ha->pdev->dev, chap_size,
4360                         chap_flash_data, chap_dma);
4361 }
4362
4363 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
4364                                   struct ql4_tuple_ddb *tddb)
4365 {
4366         struct scsi_qla_host *ha;
4367         struct iscsi_cls_session *cls_sess;
4368         struct iscsi_cls_conn *cls_conn;
4369         struct iscsi_session *sess;
4370         struct iscsi_conn *conn;
4371
4372         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
4373         ha = ddb_entry->ha;
4374         cls_sess = ddb_entry->sess;
4375         sess = cls_sess->dd_data;
4376         cls_conn = ddb_entry->conn;
4377         conn = cls_conn->dd_data;
4378
4379         tddb->tpgt = sess->tpgt;
4380         tddb->port = conn->persistent_port;
4381         strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
4382         strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
4383 }
4384
4385 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
4386                                       struct ql4_tuple_ddb *tddb,
4387                                       uint8_t *flash_isid)
4388 {
4389         uint16_t options = 0;
4390
4391         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
4392         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
4393                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
4394
4395         options = le16_to_cpu(fw_ddb_entry->options);
4396         if (options & DDB_OPT_IPV6_DEVICE)
4397                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
4398         else
4399                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
4400
4401         tddb->port = le16_to_cpu(fw_ddb_entry->port);
4402
4403         if (flash_isid == NULL)
4404                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
4405                        sizeof(tddb->isid));
4406         else
4407                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
4408 }
4409
4410 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
4411                                      struct ql4_tuple_ddb *old_tddb,
4412                                      struct ql4_tuple_ddb *new_tddb,
4413                                      uint8_t is_isid_compare)
4414 {
4415         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4416                 return QLA_ERROR;
4417
4418         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
4419                 return QLA_ERROR;
4420
4421         if (old_tddb->port != new_tddb->port)
4422                 return QLA_ERROR;
4423
4424         /* For multi sessions, driver generates the ISID, so do not compare
4425          * ISID in reset path since it would be a comparision between the
4426          * driver generated ISID and firmware generated ISID. This could
4427          * lead to adding duplicated DDBs in the list as driver generated
4428          * ISID would not match firmware generated ISID.
4429          */
4430         if (is_isid_compare) {
4431                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
4432                         "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
4433                         __func__, old_tddb->isid[5], old_tddb->isid[4],
4434                         old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
4435                         old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
4436                         new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
4437                         new_tddb->isid[0]));
4438
4439                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4440                            sizeof(old_tddb->isid)))
4441                         return QLA_ERROR;
4442         }
4443
4444         DEBUG2(ql4_printk(KERN_INFO, ha,
4445                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
4446                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
4447                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
4448                           new_tddb->ip_addr, new_tddb->iscsi_name));
4449
4450         return QLA_SUCCESS;
4451 }
4452
4453 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
4454                                      struct dev_db_entry *fw_ddb_entry)
4455 {
4456         struct ddb_entry *ddb_entry;
4457         struct ql4_tuple_ddb *fw_tddb = NULL;
4458         struct ql4_tuple_ddb *tmp_tddb = NULL;
4459         int idx;
4460         int ret = QLA_ERROR;
4461
4462         fw_tddb = vzalloc(sizeof(*fw_tddb));
4463         if (!fw_tddb) {
4464                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4465                                   "Memory Allocation failed.\n"));
4466                 ret = QLA_SUCCESS;
4467                 goto exit_check;
4468         }
4469
4470         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4471         if (!tmp_tddb) {
4472                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4473                                   "Memory Allocation failed.\n"));
4474                 ret = QLA_SUCCESS;
4475                 goto exit_check;
4476         }
4477
4478         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4479
4480         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4481                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4482                 if (ddb_entry == NULL)
4483                         continue;
4484
4485                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
4486                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
4487                         ret = QLA_SUCCESS; /* found */
4488                         goto exit_check;
4489                 }
4490         }
4491
4492 exit_check:
4493         if (fw_tddb)
4494                 vfree(fw_tddb);
4495         if (tmp_tddb)
4496                 vfree(tmp_tddb);
4497         return ret;
4498 }
4499
4500 /**
4501  * qla4xxx_check_existing_isid - check if target with same isid exist
4502  *                               in target list
4503  * @list_nt: list of target
4504  * @isid: isid to check
4505  *
4506  * This routine return QLA_SUCCESS if target with same isid exist
4507  **/
4508 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
4509 {
4510         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4511         struct dev_db_entry *fw_ddb_entry;
4512
4513         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4514                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
4515
4516                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
4517                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
4518                         return QLA_SUCCESS;
4519                 }
4520         }
4521         return QLA_ERROR;
4522 }
4523
4524 /**
4525  * qla4xxx_update_isid - compare ddbs and updated isid
4526  * @ha: Pointer to host adapter structure.
4527  * @list_nt: list of nt target
4528  * @fw_ddb_entry: firmware ddb entry
4529  *
4530  * This routine update isid if ddbs have same iqn, same isid and
4531  * different IP addr.
4532  * Return QLA_SUCCESS if isid is updated.
4533  **/
4534 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
4535                                struct list_head *list_nt,
4536                                struct dev_db_entry *fw_ddb_entry)
4537 {
4538         uint8_t base_value, i;
4539
4540         base_value = fw_ddb_entry->isid[1] & 0x1f;
4541         for (i = 0; i < 8; i++) {
4542                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
4543                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4544                         break;
4545         }
4546
4547         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4548                 return QLA_ERROR;
4549
4550         return QLA_SUCCESS;
4551 }
4552
4553 /**
4554  * qla4xxx_should_update_isid - check if isid need to update
4555  * @ha: Pointer to host adapter structure.
4556  * @old_tddb: ddb tuple
4557  * @new_tddb: ddb tuple
4558  *
4559  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
4560  * same isid
4561  **/
4562 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
4563                                       struct ql4_tuple_ddb *old_tddb,
4564                                       struct ql4_tuple_ddb *new_tddb)
4565 {
4566         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
4567                 /* Same ip */
4568                 if (old_tddb->port == new_tddb->port)
4569                         return QLA_ERROR;
4570         }
4571
4572         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4573                 /* different iqn */
4574                 return QLA_ERROR;
4575
4576         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4577                    sizeof(old_tddb->isid)))
4578                 /* different isid */
4579                 return QLA_ERROR;
4580
4581         return QLA_SUCCESS;
4582 }
4583
4584 /**
4585  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
4586  * @ha: Pointer to host adapter structure.
4587  * @list_nt: list of nt target.
4588  * @fw_ddb_entry: firmware ddb entry.
4589  *
4590  * This routine check if fw_ddb_entry already exists in list_nt to avoid
4591  * duplicate ddb in list_nt.
4592  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
4593  * Note: This function also update isid of DDB if required.
4594  **/
4595
4596 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
4597                                        struct list_head *list_nt,
4598                                        struct dev_db_entry *fw_ddb_entry)
4599 {
4600         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
4601         struct ql4_tuple_ddb *fw_tddb = NULL;
4602         struct ql4_tuple_ddb *tmp_tddb = NULL;
4603         int rval, ret = QLA_ERROR;
4604
4605         fw_tddb = vzalloc(sizeof(*fw_tddb));
4606         if (!fw_tddb) {
4607                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4608                                   "Memory Allocation failed.\n"));
4609                 ret = QLA_SUCCESS;
4610                 goto exit_check;
4611         }
4612
4613         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4614         if (!tmp_tddb) {
4615                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4616                                   "Memory Allocation failed.\n"));
4617                 ret = QLA_SUCCESS;
4618                 goto exit_check;
4619         }
4620
4621         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4622
4623         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4624                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
4625                                           nt_ddb_idx->flash_isid);
4626                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
4627                 /* found duplicate ddb */
4628                 if (ret == QLA_SUCCESS)
4629                         goto exit_check;
4630         }
4631
4632         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4633                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
4634
4635                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
4636                 if (ret == QLA_SUCCESS) {
4637                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
4638                         if (rval == QLA_SUCCESS)
4639                                 ret = QLA_ERROR;
4640                         else
4641                                 ret = QLA_SUCCESS;
4642
4643                         goto exit_check;
4644                 }
4645         }
4646
4647 exit_check:
4648         if (fw_tddb)
4649                 vfree(fw_tddb);
4650         if (tmp_tddb)
4651                 vfree(tmp_tddb);
4652         return ret;
4653 }
4654
4655 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
4656 {
4657         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
4658
4659         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4660                 list_del_init(&ddb_idx->list);
4661                 vfree(ddb_idx);
4662         }
4663 }
4664
4665 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
4666                                         struct dev_db_entry *fw_ddb_entry)
4667 {
4668         struct iscsi_endpoint *ep;
4669         struct sockaddr_in *addr;
4670         struct sockaddr_in6 *addr6;
4671         struct sockaddr *dst_addr;
4672         char *ip;
4673
4674         /* TODO: need to destroy on unload iscsi_endpoint*/
4675         dst_addr = vmalloc(sizeof(*dst_addr));
4676         if (!dst_addr)
4677                 return NULL;
4678
4679         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
4680                 dst_addr->sa_family = AF_INET6;
4681                 addr6 = (struct sockaddr_in6 *)dst_addr;
4682                 ip = (char *)&addr6->sin6_addr;
4683                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
4684                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
4685
4686         } else {
4687                 dst_addr->sa_family = AF_INET;
4688                 addr = (struct sockaddr_in *)dst_addr;
4689                 ip = (char *)&addr->sin_addr;
4690                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
4691                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
4692         }
4693
4694         ep = qla4xxx_ep_connect(ha->host, dst_addr, 0);
4695         vfree(dst_addr);
4696         return ep;
4697 }
4698
4699 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
4700 {
4701         if (ql4xdisablesysfsboot)
4702                 return QLA_SUCCESS;
4703         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
4704                 return QLA_ERROR;
4705         return QLA_SUCCESS;
4706 }
4707
4708 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
4709                                           struct ddb_entry *ddb_entry)
4710 {
4711         uint16_t def_timeout;
4712
4713         ddb_entry->ddb_type = FLASH_DDB;
4714         ddb_entry->fw_ddb_index = INVALID_ENTRY;
4715         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
4716         ddb_entry->ha = ha;
4717         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
4718         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
4719
4720         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
4721         atomic_set(&ddb_entry->relogin_timer, 0);
4722         atomic_set(&ddb_entry->relogin_retry_count, 0);
4723         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
4724         ddb_entry->default_relogin_timeout =
4725                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
4726                 def_timeout : LOGIN_TOV;
4727         ddb_entry->default_time2wait =
4728                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
4729 }
4730
4731 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
4732 {
4733         uint32_t idx = 0;
4734         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
4735         uint32_t sts[MBOX_REG_COUNT];
4736         uint32_t ip_state;
4737         unsigned long wtime;
4738         int ret;
4739
4740         wtime = jiffies + (HZ * IP_CONFIG_TOV);
4741         do {
4742                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
4743                         if (ip_idx[idx] == -1)
4744                                 continue;
4745
4746                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
4747
4748                         if (ret == QLA_ERROR) {
4749                                 ip_idx[idx] = -1;
4750                                 continue;
4751                         }
4752
4753                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
4754
4755                         DEBUG2(ql4_printk(KERN_INFO, ha,
4756                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
4757                                           ip_idx[idx], ip_state));
4758                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
4759                             ip_state == IP_ADDRSTATE_INVALID ||
4760                             ip_state == IP_ADDRSTATE_PREFERRED ||
4761                             ip_state == IP_ADDRSTATE_DEPRICATED ||
4762                             ip_state == IP_ADDRSTATE_DISABLING)
4763                                 ip_idx[idx] = -1;
4764                 }
4765
4766                 /* Break if all IP states checked */
4767                 if ((ip_idx[0] == -1) &&
4768                     (ip_idx[1] == -1) &&
4769                     (ip_idx[2] == -1) &&
4770                     (ip_idx[3] == -1))
4771                         break;
4772                 schedule_timeout_uninterruptible(HZ);
4773         } while (time_after(wtime, jiffies));
4774 }
4775
4776 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
4777                                   struct list_head *list_st)
4778 {
4779         struct qla_ddb_index  *st_ddb_idx;
4780         int max_ddbs;
4781         int fw_idx_size;
4782         struct dev_db_entry *fw_ddb_entry;
4783         dma_addr_t fw_ddb_dma;
4784         int ret;
4785         uint32_t idx = 0, next_idx = 0;
4786         uint32_t state = 0, conn_err = 0;
4787         uint16_t conn_id = 0;
4788
4789         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4790                                       &fw_ddb_dma);
4791         if (fw_ddb_entry == NULL) {
4792                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4793                 goto exit_st_list;
4794         }
4795
4796         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4797                                      MAX_DEV_DB_ENTRIES;
4798         fw_idx_size = sizeof(struct qla_ddb_index);
4799
4800         for (idx = 0; idx < max_ddbs; idx = next_idx) {
4801                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4802                                               NULL, &next_idx, &state,
4803                                               &conn_err, NULL, &conn_id);
4804                 if (ret == QLA_ERROR)
4805                         break;
4806
4807                 /* Ignore DDB if invalid state (unassigned) */
4808                 if (state == DDB_DS_UNASSIGNED)
4809                         goto continue_next_st;
4810
4811                 /* Check if ST, add to the list_st */
4812                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
4813                         goto continue_next_st;
4814
4815                 st_ddb_idx = vzalloc(fw_idx_size);
4816                 if (!st_ddb_idx)
4817                         break;
4818
4819                 st_ddb_idx->fw_ddb_idx = idx;
4820
4821                 list_add_tail(&st_ddb_idx->list, list_st);
4822 continue_next_st:
4823                 if (next_idx == 0)
4824                         break;
4825         }
4826
4827 exit_st_list:
4828         if (fw_ddb_entry)
4829                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
4830 }
4831
4832 /**
4833  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
4834  * @ha: pointer to adapter structure
4835  * @list_ddb: List from which failed ddb to be removed
4836  *
4837  * Iterate over the list of DDBs and find and remove DDBs that are either in
4838  * no connection active state or failed state
4839  **/
4840 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
4841                                       struct list_head *list_ddb)
4842 {
4843         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
4844         uint32_t next_idx = 0;
4845         uint32_t state = 0, conn_err = 0;
4846         int ret;
4847
4848         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4849                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
4850                                               NULL, 0, NULL, &next_idx, &state,
4851                                               &conn_err, NULL, NULL);
4852                 if (ret == QLA_ERROR)
4853                         continue;
4854
4855                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
4856                     state == DDB_DS_SESSION_FAILED) {
4857                         list_del_init(&ddb_idx->list);
4858                         vfree(ddb_idx);
4859                 }
4860         }
4861 }
4862
4863 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
4864                                    struct dev_db_entry *fw_ddb_entry,
4865                                    int is_reset)
4866 {
4867         struct iscsi_cls_session *cls_sess;
4868         struct iscsi_session *sess;
4869         struct iscsi_cls_conn *cls_conn;
4870         struct iscsi_endpoint *ep;
4871         uint16_t cmds_max = 32;
4872         uint16_t conn_id = 0;
4873         uint32_t initial_cmdsn = 0;
4874         int ret = QLA_SUCCESS;
4875
4876         struct ddb_entry *ddb_entry = NULL;
4877
4878         /* Create session object, with INVALID_ENTRY,
4879          * the targer_id would get set when we issue the login
4880          */
4881         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
4882                                        cmds_max, sizeof(struct ddb_entry),
4883                                        sizeof(struct ql4_task_data),
4884                                        initial_cmdsn, INVALID_ENTRY);
4885         if (!cls_sess) {
4886                 ret = QLA_ERROR;
4887                 goto exit_setup;
4888         }
4889
4890         /*
4891          * so calling module_put function to decrement the
4892          * reference count.
4893          **/
4894         module_put(qla4xxx_iscsi_transport.owner);
4895         sess = cls_sess->dd_data;
4896         ddb_entry = sess->dd_data;
4897         ddb_entry->sess = cls_sess;
4898
4899         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
4900         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
4901                sizeof(struct dev_db_entry));
4902
4903         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry);
4904
4905         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
4906
4907         if (!cls_conn) {
4908                 ret = QLA_ERROR;
4909                 goto exit_setup;
4910         }
4911
4912         ddb_entry->conn = cls_conn;
4913
4914         /* Setup ep, for displaying attributes in sysfs */
4915         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
4916         if (ep) {
4917                 ep->conn = cls_conn;
4918                 cls_conn->ep = ep;
4919         } else {
4920                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
4921                 ret = QLA_ERROR;
4922                 goto exit_setup;
4923         }
4924
4925         /* Update sess/conn params */
4926         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
4927
4928         if (is_reset == RESET_ADAPTER) {
4929                 iscsi_block_session(cls_sess);
4930                 /* Use the relogin path to discover new devices
4931                  *  by short-circuting the logic of setting
4932                  *  timer to relogin - instead set the flags
4933                  *  to initiate login right away.
4934                  */
4935                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4936                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4937         }
4938
4939 exit_setup:
4940         return ret;
4941 }
4942
4943 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
4944                                   struct list_head *list_nt, int is_reset)
4945 {
4946         struct dev_db_entry *fw_ddb_entry;
4947         dma_addr_t fw_ddb_dma;
4948         int max_ddbs;
4949         int fw_idx_size;
4950         int ret;
4951         uint32_t idx = 0, next_idx = 0;
4952         uint32_t state = 0, conn_err = 0;
4953         uint16_t conn_id = 0;
4954         struct qla_ddb_index  *nt_ddb_idx;
4955
4956         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4957                                       &fw_ddb_dma);
4958         if (fw_ddb_entry == NULL) {
4959                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4960                 goto exit_nt_list;
4961         }
4962         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4963                                      MAX_DEV_DB_ENTRIES;
4964         fw_idx_size = sizeof(struct qla_ddb_index);
4965
4966         for (idx = 0; idx < max_ddbs; idx = next_idx) {
4967                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4968                                               NULL, &next_idx, &state,
4969                                               &conn_err, NULL, &conn_id);
4970                 if (ret == QLA_ERROR)
4971                         break;
4972
4973                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
4974                         goto continue_next_nt;
4975
4976                 /* Check if NT, then add to list it */
4977                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
4978                         goto continue_next_nt;
4979
4980                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
4981                     state == DDB_DS_SESSION_FAILED))
4982                         goto continue_next_nt;
4983
4984                 DEBUG2(ql4_printk(KERN_INFO, ha,
4985                                   "Adding  DDB to session = 0x%x\n", idx));
4986                 if (is_reset == INIT_ADAPTER) {
4987                         nt_ddb_idx = vmalloc(fw_idx_size);
4988                         if (!nt_ddb_idx)
4989                                 break;
4990
4991                         nt_ddb_idx->fw_ddb_idx = idx;
4992
4993                         /* Copy original isid as it may get updated in function
4994                          * qla4xxx_update_isid(). We need original isid in
4995                          * function qla4xxx_compare_tuple_ddb to find duplicate
4996                          * target */
4997                         memcpy(&nt_ddb_idx->flash_isid[0],
4998                                &fw_ddb_entry->isid[0],
4999                                sizeof(nt_ddb_idx->flash_isid));
5000
5001                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
5002                                                           fw_ddb_entry);
5003                         if (ret == QLA_SUCCESS) {
5004                                 /* free nt_ddb_idx and do not add to list_nt */
5005                                 vfree(nt_ddb_idx);
5006                                 goto continue_next_nt;
5007                         }
5008
5009                         /* Copy updated isid */
5010                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
5011                                sizeof(struct dev_db_entry));
5012
5013                         list_add_tail(&nt_ddb_idx->list, list_nt);
5014                 } else if (is_reset == RESET_ADAPTER) {
5015                         if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
5016                                                                 QLA_SUCCESS)
5017                                 goto continue_next_nt;
5018                 }
5019
5020                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset);
5021                 if (ret == QLA_ERROR)
5022                         goto exit_nt_list;
5023
5024 continue_next_nt:
5025                 if (next_idx == 0)
5026                         break;
5027         }
5028
5029 exit_nt_list:
5030         if (fw_ddb_entry)
5031                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5032 }
5033
5034 /**
5035  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
5036  * @ha: pointer to adapter structure
5037  * @is_reset: Is this init path or reset path
5038  *
5039  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
5040  * using connection open, then create the list of normal targets (nt)
5041  * from firmware DDBs. Based on the list of nt setup session and connection
5042  * objects.
5043  **/
5044 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
5045 {
5046         uint16_t tmo = 0;
5047         struct list_head list_st, list_nt;
5048         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
5049         unsigned long wtime;
5050
5051         if (!test_bit(AF_LINK_UP, &ha->flags)) {
5052                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
5053                 ha->is_reset = is_reset;
5054                 return;
5055         }
5056
5057         INIT_LIST_HEAD(&list_st);
5058         INIT_LIST_HEAD(&list_nt);
5059
5060         qla4xxx_build_st_list(ha, &list_st);
5061
5062         /* Before issuing conn open mbox, ensure all IPs states are configured
5063          * Note, conn open fails if IPs are not configured
5064          */
5065         qla4xxx_wait_for_ip_configuration(ha);
5066
5067         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
5068         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
5069                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
5070         }
5071
5072         /* Wait to ensure all sendtargets are done for min 12 sec wait */
5073         tmo = ((ha->def_timeout > LOGIN_TOV) &&
5074                (ha->def_timeout < LOGIN_TOV * 10) ?
5075                ha->def_timeout : LOGIN_TOV);
5076
5077         DEBUG2(ql4_printk(KERN_INFO, ha,
5078                           "Default time to wait for build ddb %d\n", tmo));
5079
5080         wtime = jiffies + (HZ * tmo);
5081         do {
5082                 if (list_empty(&list_st))
5083                         break;
5084
5085                 qla4xxx_remove_failed_ddb(ha, &list_st);
5086                 schedule_timeout_uninterruptible(HZ / 10);
5087         } while (time_after(wtime, jiffies));
5088
5089         /* Free up the sendtargets list */
5090         qla4xxx_free_ddb_list(&list_st);
5091
5092         qla4xxx_build_nt_list(ha, &list_nt, is_reset);
5093
5094         qla4xxx_free_ddb_list(&list_nt);
5095
5096         qla4xxx_free_ddb_index(ha);
5097 }
5098
5099 /**
5100  * qla4xxx_probe_adapter - callback function to probe HBA
5101  * @pdev: pointer to pci_dev structure
5102  * @pci_device_id: pointer to pci_device entry
5103  *
5104  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
5105  * It returns zero if successful. It also initializes all data necessary for
5106  * the driver.
5107  **/
5108 static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
5109                                            const struct pci_device_id *ent)
5110 {
5111         int ret = -ENODEV, status;
5112         struct Scsi_Host *host;
5113         struct scsi_qla_host *ha;
5114         uint8_t init_retry_count = 0;
5115         char buf[34];
5116         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
5117         uint32_t dev_state;
5118
5119         if (pci_enable_device(pdev))
5120                 return -1;
5121
5122         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
5123         if (host == NULL) {
5124                 printk(KERN_WARNING
5125                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
5126                 goto probe_disable_device;
5127         }
5128
5129         /* Clear our data area */
5130         ha = to_qla_host(host);
5131         memset(ha, 0, sizeof(*ha));
5132
5133         /* Save the information from PCI BIOS.  */
5134         ha->pdev = pdev;
5135         ha->host = host;
5136         ha->host_no = host->host_no;
5137         ha->func_num = PCI_FUNC(ha->pdev->devfn);
5138
5139         pci_enable_pcie_error_reporting(pdev);
5140
5141         /* Setup Runtime configurable options */
5142         if (is_qla8022(ha)) {
5143                 ha->isp_ops = &qla4_82xx_isp_ops;
5144                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
5145                 ha->qdr_sn_window = -1;
5146                 ha->ddr_mn_window = -1;
5147                 ha->curr_window = 255;
5148                 nx_legacy_intr = &legacy_intr[ha->func_num];
5149                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
5150                 ha->nx_legacy_intr.tgt_status_reg =
5151                         nx_legacy_intr->tgt_status_reg;
5152                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
5153                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
5154         } else if (is_qla8032(ha)) {
5155                 ha->isp_ops = &qla4_83xx_isp_ops;
5156                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
5157         } else {
5158                 ha->isp_ops = &qla4xxx_isp_ops;
5159         }
5160
5161         if (is_qla80XX(ha)) {
5162                 rwlock_init(&ha->hw_lock);
5163                 ha->pf_bit = ha->func_num << 16;
5164                 /* Set EEH reset type to fundamental if required by hba */
5165                 pdev->needs_freset = 1;
5166         }
5167
5168         /* Configure PCI I/O space. */
5169         ret = ha->isp_ops->iospace_config(ha);
5170         if (ret)
5171                 goto probe_failed_ioconfig;
5172
5173         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
5174                    pdev->device, pdev->irq, ha->reg);
5175
5176         qla4xxx_config_dma_addressing(ha);
5177
5178         /* Initialize lists and spinlocks. */
5179         INIT_LIST_HEAD(&ha->free_srb_q);
5180
5181         mutex_init(&ha->mbox_sem);
5182         mutex_init(&ha->chap_sem);
5183         init_completion(&ha->mbx_intr_comp);
5184         init_completion(&ha->disable_acb_comp);
5185
5186         spin_lock_init(&ha->hardware_lock);
5187         spin_lock_init(&ha->work_lock);
5188
5189         /* Initialize work list */
5190         INIT_LIST_HEAD(&ha->work_list);
5191
5192         /* Allocate dma buffers */
5193         if (qla4xxx_mem_alloc(ha)) {
5194                 ql4_printk(KERN_WARNING, ha,
5195                     "[ERROR] Failed to allocate memory for adapter\n");
5196
5197                 ret = -ENOMEM;
5198                 goto probe_failed;
5199         }
5200
5201         host->cmd_per_lun = 3;
5202         host->max_channel = 0;
5203         host->max_lun = MAX_LUNS - 1;
5204         host->max_id = MAX_TARGETS;
5205         host->max_cmd_len = IOCB_MAX_CDB_LEN;
5206         host->can_queue = MAX_SRBS ;
5207         host->transportt = qla4xxx_scsi_transport;
5208
5209         ret = scsi_init_shared_tag_map(host, MAX_SRBS);
5210         if (ret) {
5211                 ql4_printk(KERN_WARNING, ha,
5212                            "%s: scsi_init_shared_tag_map failed\n", __func__);
5213                 goto probe_failed;
5214         }
5215
5216         pci_set_drvdata(pdev, ha);
5217
5218         ret = scsi_add_host(host, &pdev->dev);
5219         if (ret)
5220                 goto probe_failed;
5221
5222         if (is_qla80XX(ha))
5223                 qla4_8xxx_get_flash_info(ha);
5224
5225         if (is_qla8032(ha)) {
5226                 qla4_83xx_read_reset_template(ha);
5227                 /*
5228                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
5229                  * If DONRESET_BIT0 is set, drivers should not set dev_state
5230                  * to NEED_RESET. But if NEED_RESET is set, drivers should
5231                  * should honor the reset.
5232                  */
5233                 if (ql4xdontresethba == 1)
5234                         qla4_83xx_set_idc_dontreset(ha);
5235         }
5236
5237         /*
5238          * Initialize the Host adapter request/response queues and
5239          * firmware
5240          * NOTE: interrupts enabled upon successful completion
5241          */
5242         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5243
5244         /* Dont retry adapter initialization if IRQ allocation failed */
5245         if (!test_bit(AF_IRQ_ATTACHED, &ha->flags))
5246                 goto skip_retry_init;
5247
5248         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
5249             init_retry_count++ < MAX_INIT_RETRIES) {
5250
5251                 if (is_qla80XX(ha)) {
5252                         ha->isp_ops->idc_lock(ha);
5253                         dev_state = qla4_8xxx_rd_direct(ha,
5254                                                         QLA82XX_CRB_DEV_STATE);
5255                         ha->isp_ops->idc_unlock(ha);
5256                         if (dev_state == QLA8XXX_DEV_FAILED) {
5257                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
5258                                     "initialize adapter. H/W is in failed state\n",
5259                                     __func__);
5260                                 break;
5261                         }
5262                 }
5263                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
5264                               "(%d)\n", __func__, init_retry_count));
5265
5266                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
5267                         continue;
5268
5269                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5270         }
5271
5272 skip_retry_init:
5273         if (!test_bit(AF_ONLINE, &ha->flags)) {
5274                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
5275
5276                 if ((is_qla8022(ha) && ql4xdontresethba) ||
5277                     (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
5278                         /* Put the device in failed state. */
5279                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
5280                         ha->isp_ops->idc_lock(ha);
5281                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5282                                             QLA8XXX_DEV_FAILED);
5283                         ha->isp_ops->idc_unlock(ha);
5284                 }
5285                 ret = -ENODEV;
5286                 goto remove_host;
5287         }
5288
5289         /* Startup the kernel thread for this host adapter. */
5290         DEBUG2(printk("scsi: %s: Starting kernel thread for "
5291                       "qla4xxx_dpc\n", __func__));
5292         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
5293         ha->dpc_thread = create_singlethread_workqueue(buf);
5294         if (!ha->dpc_thread) {
5295                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
5296                 ret = -ENODEV;
5297                 goto remove_host;
5298         }
5299         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
5300
5301         sprintf(buf, "qla4xxx_%lu_task", ha->host_no);
5302         ha->task_wq = alloc_workqueue(buf, WQ_MEM_RECLAIM, 1);
5303         if (!ha->task_wq) {
5304                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
5305                 ret = -ENODEV;
5306                 goto remove_host;
5307         }
5308
5309         /*
5310          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
5311          * (which is called indirectly by qla4xxx_initialize_adapter),
5312          * so that irqs will be registered after crbinit but before
5313          * mbx_intr_enable.
5314          */
5315         if (is_qla40XX(ha)) {
5316                 ret = qla4xxx_request_irqs(ha);
5317                 if (ret) {
5318                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
5319                             "interrupt %d already in use.\n", pdev->irq);
5320                         goto remove_host;
5321                 }
5322         }
5323
5324         pci_save_state(ha->pdev);
5325         ha->isp_ops->enable_intrs(ha);
5326
5327         /* Start timer thread. */
5328         qla4xxx_start_timer(ha, qla4xxx_timer, 1);
5329
5330         set_bit(AF_INIT_DONE, &ha->flags);
5331
5332         qla4_8xxx_alloc_sysfs_attr(ha);
5333
5334         printk(KERN_INFO
5335                " QLogic iSCSI HBA Driver version: %s\n"
5336                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
5337                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
5338                ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
5339                ha->patch_number, ha->build_number);
5340
5341         /* Set the driver version */
5342         if (is_qla80XX(ha))
5343                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
5344
5345         if (qla4xxx_setup_boot_info(ha))
5346                 ql4_printk(KERN_ERR, ha,
5347                            "%s: No iSCSI boot target configured\n", __func__);
5348
5349                 /* Perform the build ddb list and login to each */
5350         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
5351         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
5352
5353         qla4xxx_create_chap_list(ha);
5354
5355         qla4xxx_create_ifaces(ha);
5356         return 0;
5357
5358 remove_host:
5359         scsi_remove_host(ha->host);
5360
5361 probe_failed:
5362         qla4xxx_free_adapter(ha);
5363
5364 probe_failed_ioconfig:
5365         pci_disable_pcie_error_reporting(pdev);
5366         scsi_host_put(ha->host);
5367
5368 probe_disable_device:
5369         pci_disable_device(pdev);
5370
5371         return ret;
5372 }
5373
5374 /**
5375  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
5376  * @ha: pointer to adapter structure
5377  *
5378  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
5379  * so that the other port will not re-initialize while in the process of
5380  * removing the ha due to driver unload or hba hotplug.
5381  **/
5382 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
5383 {
5384         struct scsi_qla_host *other_ha = NULL;
5385         struct pci_dev *other_pdev = NULL;
5386         int fn = ISP4XXX_PCI_FN_2;
5387
5388         /*iscsi function numbers for ISP4xxx is 1 and 3*/
5389         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
5390                 fn = ISP4XXX_PCI_FN_1;
5391
5392         other_pdev =
5393                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
5394                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
5395                 fn));
5396
5397         /* Get other_ha if other_pdev is valid and state is enable*/
5398         if (other_pdev) {
5399                 if (atomic_read(&other_pdev->enable_cnt)) {
5400                         other_ha = pci_get_drvdata(other_pdev);
5401                         if (other_ha) {
5402                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
5403                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
5404                                     "Prevent %s reinit\n", __func__,
5405                                     dev_name(&other_ha->pdev->dev)));
5406                         }
5407                 }
5408                 pci_dev_put(other_pdev);
5409         }
5410 }
5411
5412 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
5413 {
5414         struct ddb_entry *ddb_entry;
5415         int options;
5416         int idx;
5417
5418         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
5419
5420                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
5421                 if ((ddb_entry != NULL) &&
5422                     (ddb_entry->ddb_type == FLASH_DDB)) {
5423
5424                         options = LOGOUT_OPTION_CLOSE_SESSION;
5425                         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
5426                             == QLA_ERROR)
5427                                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
5428                                            __func__);
5429
5430                         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
5431                         /*
5432                          * we have decremented the reference count of the driver
5433                          * when we setup the session to have the driver unload
5434                          * to be seamless without actually destroying the
5435                          * session
5436                          **/
5437                         try_module_get(qla4xxx_iscsi_transport.owner);
5438                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
5439                         qla4xxx_free_ddb(ha, ddb_entry);
5440                         iscsi_session_teardown(ddb_entry->sess);
5441                 }
5442         }
5443 }
5444 /**
5445  * qla4xxx_remove_adapter - calback function to remove adapter.
5446  * @pci_dev: PCI device pointer
5447  **/
5448 static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
5449 {
5450         struct scsi_qla_host *ha;
5451
5452         ha = pci_get_drvdata(pdev);
5453
5454         if (is_qla40XX(ha))
5455                 qla4xxx_prevent_other_port_reinit(ha);
5456
5457         /* destroy iface from sysfs */
5458         qla4xxx_destroy_ifaces(ha);
5459
5460         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
5461                 iscsi_boot_destroy_kset(ha->boot_kset);
5462
5463         qla4xxx_destroy_fw_ddb_session(ha);
5464         qla4_8xxx_free_sysfs_attr(ha);
5465
5466         scsi_remove_host(ha->host);
5467
5468         qla4xxx_free_adapter(ha);
5469
5470         scsi_host_put(ha->host);
5471
5472         pci_disable_pcie_error_reporting(pdev);
5473         pci_disable_device(pdev);
5474         pci_set_drvdata(pdev, NULL);
5475 }
5476
5477 /**
5478  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
5479  * @ha: HA context
5480  *
5481  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
5482  * supported addressing method.
5483  */
5484 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
5485 {
5486         int retval;
5487
5488         /* Update our PCI device dma_mask for full 64 bit mask */
5489         if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
5490                 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
5491                         dev_dbg(&ha->pdev->dev,
5492                                   "Failed to set 64 bit PCI consistent mask; "
5493                                    "using 32 bit.\n");
5494                         retval = pci_set_consistent_dma_mask(ha->pdev,
5495                                                              DMA_BIT_MASK(32));
5496                 }
5497         } else
5498                 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
5499 }
5500
5501 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
5502 {
5503         struct iscsi_cls_session *cls_sess;
5504         struct iscsi_session *sess;
5505         struct ddb_entry *ddb;
5506         int queue_depth = QL4_DEF_QDEPTH;
5507
5508         cls_sess = starget_to_session(sdev->sdev_target);
5509         sess = cls_sess->dd_data;
5510         ddb = sess->dd_data;
5511
5512         sdev->hostdata = ddb;
5513         sdev->tagged_supported = 1;
5514
5515         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
5516                 queue_depth = ql4xmaxqdepth;
5517
5518         scsi_activate_tcq(sdev, queue_depth);
5519         return 0;
5520 }
5521
5522 static int qla4xxx_slave_configure(struct scsi_device *sdev)
5523 {
5524         sdev->tagged_supported = 1;
5525         return 0;
5526 }
5527
5528 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
5529 {
5530         scsi_deactivate_tcq(sdev, 1);
5531 }
5532
5533 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
5534                                       int reason)
5535 {
5536         if (!ql4xqfulltracking)
5537                 return -EOPNOTSUPP;
5538
5539         return iscsi_change_queue_depth(sdev, qdepth, reason);
5540 }
5541
5542 /**
5543  * qla4xxx_del_from_active_array - returns an active srb
5544  * @ha: Pointer to host adapter structure.
5545  * @index: index into the active_array
5546  *
5547  * This routine removes and returns the srb at the specified index
5548  **/
5549 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
5550     uint32_t index)
5551 {
5552         struct srb *srb = NULL;
5553         struct scsi_cmnd *cmd = NULL;
5554
5555         cmd = scsi_host_find_tag(ha->host, index);
5556         if (!cmd)
5557                 return srb;
5558
5559         srb = (struct srb *)CMD_SP(cmd);
5560         if (!srb)
5561                 return srb;
5562
5563         /* update counters */
5564         if (srb->flags & SRB_DMA_VALID) {
5565                 ha->req_q_count += srb->iocb_cnt;
5566                 ha->iocb_cnt -= srb->iocb_cnt;
5567                 if (srb->cmd)
5568                         srb->cmd->host_scribble =
5569                                 (unsigned char *)(unsigned long) MAX_SRBS;
5570         }
5571         return srb;
5572 }
5573
5574 /**
5575  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
5576  * @ha: Pointer to host adapter structure.
5577  * @cmd: Scsi Command to wait on.
5578  *
5579  * This routine waits for the command to be returned by the Firmware
5580  * for some max time.
5581  **/
5582 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
5583                                       struct scsi_cmnd *cmd)
5584 {
5585         int done = 0;
5586         struct srb *rp;
5587         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
5588         int ret = SUCCESS;
5589
5590         /* Dont wait on command if PCI error is being handled
5591          * by PCI AER driver
5592          */
5593         if (unlikely(pci_channel_offline(ha->pdev)) ||
5594             (test_bit(AF_EEH_BUSY, &ha->flags))) {
5595                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
5596                     ha->host_no, __func__);
5597                 return ret;
5598         }
5599
5600         do {
5601                 /* Checking to see if its returned to OS */
5602                 rp = (struct srb *) CMD_SP(cmd);
5603                 if (rp == NULL) {
5604                         done++;
5605                         break;
5606                 }
5607
5608                 msleep(2000);
5609         } while (max_wait_time--);
5610
5611         return done;
5612 }
5613
5614 /**
5615  * qla4xxx_wait_for_hba_online - waits for HBA to come online
5616  * @ha: Pointer to host adapter structure
5617  **/
5618 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
5619 {
5620         unsigned long wait_online;
5621
5622         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
5623         while (time_before(jiffies, wait_online)) {
5624
5625                 if (adapter_up(ha))
5626                         return QLA_SUCCESS;
5627
5628                 msleep(2000);
5629         }
5630
5631         return QLA_ERROR;
5632 }
5633
5634 /**
5635  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
5636  * @ha: pointer to HBA
5637  * @t: target id
5638  * @l: lun id
5639  *
5640  * This function waits for all outstanding commands to a lun to complete. It
5641  * returns 0 if all pending commands are returned and 1 otherwise.
5642  **/
5643 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
5644                                         struct scsi_target *stgt,
5645                                         struct scsi_device *sdev)
5646 {
5647         int cnt;
5648         int status = 0;
5649         struct scsi_cmnd *cmd;
5650
5651         /*
5652          * Waiting for all commands for the designated target or dev
5653          * in the active array
5654          */
5655         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
5656                 cmd = scsi_host_find_tag(ha->host, cnt);
5657                 if (cmd && stgt == scsi_target(cmd->device) &&
5658                     (!sdev || sdev == cmd->device)) {
5659                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5660                                 status++;
5661                                 break;
5662                         }
5663                 }
5664         }
5665         return status;
5666 }
5667
5668 /**
5669  * qla4xxx_eh_abort - callback for abort task.
5670  * @cmd: Pointer to Linux's SCSI command structure
5671  *
5672  * This routine is called by the Linux OS to abort the specified
5673  * command.
5674  **/
5675 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
5676 {
5677         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5678         unsigned int id = cmd->device->id;
5679         unsigned int lun = cmd->device->lun;
5680         unsigned long flags;
5681         struct srb *srb = NULL;
5682         int ret = SUCCESS;
5683         int wait = 0;
5684
5685         ql4_printk(KERN_INFO, ha,
5686             "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
5687             ha->host_no, id, lun, cmd);
5688
5689         spin_lock_irqsave(&ha->hardware_lock, flags);
5690         srb = (struct srb *) CMD_SP(cmd);
5691         if (!srb) {
5692                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5693                 return SUCCESS;
5694         }
5695         kref_get(&srb->srb_ref);
5696         spin_unlock_irqrestore(&ha->hardware_lock, flags);
5697
5698         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
5699                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
5700                     ha->host_no, id, lun));
5701                 ret = FAILED;
5702         } else {
5703                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
5704                     ha->host_no, id, lun));
5705                 wait = 1;
5706         }
5707
5708         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
5709
5710         /* Wait for command to complete */
5711         if (wait) {
5712                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5713                         DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
5714                             ha->host_no, id, lun));
5715                         ret = FAILED;
5716                 }
5717         }
5718
5719         ql4_printk(KERN_INFO, ha,
5720             "scsi%ld:%d:%d: Abort command - %s\n",
5721             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
5722
5723         return ret;
5724 }
5725
5726 /**
5727  * qla4xxx_eh_device_reset - callback for target reset.
5728  * @cmd: Pointer to Linux's SCSI command structure
5729  *
5730  * This routine is called by the Linux OS to reset all luns on the
5731  * specified target.
5732  **/
5733 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
5734 {
5735         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5736         struct ddb_entry *ddb_entry = cmd->device->hostdata;
5737         int ret = FAILED, stat;
5738
5739         if (!ddb_entry)
5740                 return ret;
5741
5742         ret = iscsi_block_scsi_eh(cmd);
5743         if (ret)
5744                 return ret;
5745         ret = FAILED;
5746
5747         ql4_printk(KERN_INFO, ha,
5748                    "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
5749                    cmd->device->channel, cmd->device->id, cmd->device->lun);
5750
5751         DEBUG2(printk(KERN_INFO
5752                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
5753                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
5754                       cmd, jiffies, cmd->request->timeout / HZ,
5755                       ha->dpc_flags, cmd->result, cmd->allowed));
5756
5757         /* FIXME: wait for hba to go online */
5758         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
5759         if (stat != QLA_SUCCESS) {
5760                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
5761                 goto eh_dev_reset_done;
5762         }
5763
5764         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5765                                          cmd->device)) {
5766                 ql4_printk(KERN_INFO, ha,
5767                            "DEVICE RESET FAILED - waiting for "
5768                            "commands.\n");
5769                 goto eh_dev_reset_done;
5770         }
5771
5772         /* Send marker. */
5773         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5774                 MM_LUN_RESET) != QLA_SUCCESS)
5775                 goto eh_dev_reset_done;
5776
5777         ql4_printk(KERN_INFO, ha,
5778                    "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
5779                    ha->host_no, cmd->device->channel, cmd->device->id,
5780                    cmd->device->lun);
5781
5782         ret = SUCCESS;
5783
5784 eh_dev_reset_done:
5785
5786         return ret;
5787 }
5788
5789 /**
5790  * qla4xxx_eh_target_reset - callback for target reset.
5791  * @cmd: Pointer to Linux's SCSI command structure
5792  *
5793  * This routine is called by the Linux OS to reset the target.
5794  **/
5795 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
5796 {
5797         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5798         struct ddb_entry *ddb_entry = cmd->device->hostdata;
5799         int stat, ret;
5800
5801         if (!ddb_entry)
5802                 return FAILED;
5803
5804         ret = iscsi_block_scsi_eh(cmd);
5805         if (ret)
5806                 return ret;
5807
5808         starget_printk(KERN_INFO, scsi_target(cmd->device),
5809                        "WARM TARGET RESET ISSUED.\n");
5810
5811         DEBUG2(printk(KERN_INFO
5812                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
5813                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
5814                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
5815                       ha->dpc_flags, cmd->result, cmd->allowed));
5816
5817         stat = qla4xxx_reset_target(ha, ddb_entry);
5818         if (stat != QLA_SUCCESS) {
5819                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5820                                "WARM TARGET RESET FAILED.\n");
5821                 return FAILED;
5822         }
5823
5824         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5825                                          NULL)) {
5826                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5827                                "WARM TARGET DEVICE RESET FAILED - "
5828                                "waiting for commands.\n");
5829                 return FAILED;
5830         }
5831
5832         /* Send marker. */
5833         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5834                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
5835                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5836                                "WARM TARGET DEVICE RESET FAILED - "
5837                                "marker iocb failed.\n");
5838                 return FAILED;
5839         }
5840
5841         starget_printk(KERN_INFO, scsi_target(cmd->device),
5842                        "WARM TARGET RESET SUCCEEDED.\n");
5843         return SUCCESS;
5844 }
5845
5846 /**
5847  * qla4xxx_is_eh_active - check if error handler is running
5848  * @shost: Pointer to SCSI Host struct
5849  *
5850  * This routine finds that if reset host is called in EH
5851  * scenario or from some application like sg_reset
5852  **/
5853 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
5854 {
5855         if (shost->shost_state == SHOST_RECOVERY)
5856                 return 1;
5857         return 0;
5858 }
5859
5860 /**
5861  * qla4xxx_eh_host_reset - kernel callback
5862  * @cmd: Pointer to Linux's SCSI command structure
5863  *
5864  * This routine is invoked by the Linux kernel to perform fatal error
5865  * recovery on the specified adapter.
5866  **/
5867 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
5868 {
5869         int return_status = FAILED;
5870         struct scsi_qla_host *ha;
5871
5872         ha = to_qla_host(cmd->device->host);
5873
5874         if (is_qla8032(ha) && ql4xdontresethba)
5875                 qla4_83xx_set_idc_dontreset(ha);
5876
5877         /*
5878          * For ISP8324, if IDC_CTRL DONTRESET_BIT0 is set by other
5879          * protocol drivers, we should not set device_state to
5880          * NEED_RESET
5881          */
5882         if (ql4xdontresethba ||
5883             (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
5884                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5885                      ha->host_no, __func__));
5886
5887                 /* Clear outstanding srb in queues */
5888                 if (qla4xxx_is_eh_active(cmd->device->host))
5889                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
5890
5891                 return FAILED;
5892         }
5893
5894         ql4_printk(KERN_INFO, ha,
5895                    "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
5896                    cmd->device->channel, cmd->device->id, cmd->device->lun);
5897
5898         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
5899                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
5900                               "DEAD.\n", ha->host_no, cmd->device->channel,
5901                               __func__));
5902
5903                 return FAILED;
5904         }
5905
5906         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
5907                 if (is_qla80XX(ha))
5908                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5909                 else
5910                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
5911         }
5912
5913         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
5914                 return_status = SUCCESS;
5915
5916         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
5917                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
5918
5919         return return_status;
5920 }
5921
5922 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
5923 {
5924         uint32_t mbox_cmd[MBOX_REG_COUNT];
5925         uint32_t mbox_sts[MBOX_REG_COUNT];
5926         struct addr_ctrl_blk_def *acb = NULL;
5927         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
5928         int rval = QLA_SUCCESS;
5929         dma_addr_t acb_dma;
5930
5931         acb = dma_alloc_coherent(&ha->pdev->dev,
5932                                  sizeof(struct addr_ctrl_blk_def),
5933                                  &acb_dma, GFP_KERNEL);
5934         if (!acb) {
5935                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
5936                            __func__);
5937                 rval = -ENOMEM;
5938                 goto exit_port_reset;
5939         }
5940
5941         memset(acb, 0, acb_len);
5942
5943         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
5944         if (rval != QLA_SUCCESS) {
5945                 rval = -EIO;
5946                 goto exit_free_acb;
5947         }
5948
5949         rval = qla4xxx_disable_acb(ha);
5950         if (rval != QLA_SUCCESS) {
5951                 rval = -EIO;
5952                 goto exit_free_acb;
5953         }
5954
5955         wait_for_completion_timeout(&ha->disable_acb_comp,
5956                                     DISABLE_ACB_TOV * HZ);
5957
5958         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
5959         if (rval != QLA_SUCCESS) {
5960                 rval = -EIO;
5961                 goto exit_free_acb;
5962         }
5963
5964 exit_free_acb:
5965         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
5966                           acb, acb_dma);
5967 exit_port_reset:
5968         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
5969                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
5970         return rval;
5971 }
5972
5973 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
5974 {
5975         struct scsi_qla_host *ha = to_qla_host(shost);
5976         int rval = QLA_SUCCESS;
5977
5978         if (ql4xdontresethba) {
5979                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
5980                                   __func__));
5981                 rval = -EPERM;
5982                 goto exit_host_reset;
5983         }
5984
5985         rval = qla4xxx_wait_for_hba_online(ha);
5986         if (rval != QLA_SUCCESS) {
5987                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unable to reset host "
5988                                   "adapter\n", __func__));
5989                 rval = -EIO;
5990                 goto exit_host_reset;
5991         }
5992
5993         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
5994                 goto recover_adapter;
5995
5996         switch (reset_type) {
5997         case SCSI_ADAPTER_RESET:
5998                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
5999                 break;
6000         case SCSI_FIRMWARE_RESET:
6001                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
6002                         if (is_qla80XX(ha))
6003                                 /* set firmware context reset */
6004                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
6005                                         &ha->dpc_flags);
6006                         else {
6007                                 rval = qla4xxx_context_reset(ha);
6008                                 goto exit_host_reset;
6009                         }
6010                 }
6011                 break;
6012         }
6013
6014 recover_adapter:
6015         rval = qla4xxx_recover_adapter(ha);
6016         if (rval != QLA_SUCCESS) {
6017                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
6018                                   __func__));
6019                 rval = -EIO;
6020         }
6021
6022 exit_host_reset:
6023         return rval;
6024 }
6025
6026 /* PCI AER driver recovers from all correctable errors w/o
6027  * driver intervention. For uncorrectable errors PCI AER
6028  * driver calls the following device driver's callbacks
6029  *
6030  * - Fatal Errors - link_reset
6031  * - Non-Fatal Errors - driver's pci_error_detected() which
6032  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
6033  *
6034  * PCI AER driver calls
6035  * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
6036  *               returns RECOVERED or NEED_RESET if fw_hung
6037  * NEED_RESET - driver's slot_reset()
6038  * DISCONNECT - device is dead & cannot recover
6039  * RECOVERED - driver's pci_resume()
6040  */
6041 static pci_ers_result_t
6042 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
6043 {
6044         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6045
6046         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
6047             ha->host_no, __func__, state);
6048
6049         if (!is_aer_supported(ha))
6050                 return PCI_ERS_RESULT_NONE;
6051
6052         switch (state) {
6053         case pci_channel_io_normal:
6054                 clear_bit(AF_EEH_BUSY, &ha->flags);
6055                 return PCI_ERS_RESULT_CAN_RECOVER;
6056         case pci_channel_io_frozen:
6057                 set_bit(AF_EEH_BUSY, &ha->flags);
6058                 qla4xxx_mailbox_premature_completion(ha);
6059                 qla4xxx_free_irqs(ha);
6060                 pci_disable_device(pdev);
6061                 /* Return back all IOs */
6062                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
6063                 return PCI_ERS_RESULT_NEED_RESET;
6064         case pci_channel_io_perm_failure:
6065                 set_bit(AF_EEH_BUSY, &ha->flags);
6066                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
6067                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
6068                 return PCI_ERS_RESULT_DISCONNECT;
6069         }
6070         return PCI_ERS_RESULT_NEED_RESET;
6071 }
6072
6073 /**
6074  * qla4xxx_pci_mmio_enabled() gets called if
6075  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
6076  * and read/write to the device still works.
6077  **/
6078 static pci_ers_result_t
6079 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
6080 {
6081         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6082
6083         if (!is_aer_supported(ha))
6084                 return PCI_ERS_RESULT_NONE;
6085
6086         return PCI_ERS_RESULT_RECOVERED;
6087 }
6088
6089 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
6090 {
6091         uint32_t rval = QLA_ERROR;
6092         uint32_t ret = 0;
6093         int fn;
6094         struct pci_dev *other_pdev = NULL;
6095
6096         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
6097
6098         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
6099
6100         if (test_bit(AF_ONLINE, &ha->flags)) {
6101                 clear_bit(AF_ONLINE, &ha->flags);
6102                 clear_bit(AF_LINK_UP, &ha->flags);
6103                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
6104                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
6105         }
6106
6107         fn = PCI_FUNC(ha->pdev->devfn);
6108         while (fn > 0) {
6109                 fn--;
6110                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
6111                     "func %x\n", ha->host_no, __func__, fn);
6112                 /* Get the pci device given the domain, bus,
6113                  * slot/function number */
6114                 other_pdev =
6115                     pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
6116                     ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
6117                     fn));
6118
6119                 if (!other_pdev)
6120                         continue;
6121
6122                 if (atomic_read(&other_pdev->enable_cnt)) {
6123                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
6124                             "func in enabled state%x\n", ha->host_no,
6125                             __func__, fn);
6126                         pci_dev_put(other_pdev);
6127                         break;
6128                 }
6129                 pci_dev_put(other_pdev);
6130         }
6131
6132         /* The first function on the card, the reset owner will
6133          * start & initialize the firmware. The other functions
6134          * on the card will reset the firmware context
6135          */
6136         if (!fn) {
6137                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
6138                     "0x%x is the owner\n", ha->host_no, __func__,
6139                     ha->pdev->devfn);
6140
6141                 ha->isp_ops->idc_lock(ha);
6142                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6143                                     QLA8XXX_DEV_COLD);
6144                 ha->isp_ops->idc_unlock(ha);
6145
6146                 rval = qla4_8xxx_update_idc_reg(ha);
6147                 if (rval == QLA_ERROR) {
6148                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
6149                                    ha->host_no, __func__);
6150                         ha->isp_ops->idc_lock(ha);
6151                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6152                                             QLA8XXX_DEV_FAILED);
6153                         ha->isp_ops->idc_unlock(ha);
6154                         goto exit_error_recovery;
6155                 }
6156
6157                 clear_bit(AF_FW_RECOVERY, &ha->flags);
6158                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
6159
6160                 if (rval != QLA_SUCCESS) {
6161                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
6162                             "FAILED\n", ha->host_no, __func__);
6163                         ha->isp_ops->idc_lock(ha);
6164                         qla4_8xxx_clear_drv_active(ha);
6165                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6166                                             QLA8XXX_DEV_FAILED);
6167                         ha->isp_ops->idc_unlock(ha);
6168                 } else {
6169                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
6170                             "READY\n", ha->host_no, __func__);
6171                         ha->isp_ops->idc_lock(ha);
6172                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6173                                             QLA8XXX_DEV_READY);
6174                         /* Clear driver state register */
6175                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
6176                         qla4_8xxx_set_drv_active(ha);
6177                         ha->isp_ops->idc_unlock(ha);
6178                         ret = qla4xxx_request_irqs(ha);
6179                         if (ret) {
6180                                 ql4_printk(KERN_WARNING, ha, "Failed to "
6181                                     "reserve interrupt %d already in use.\n",
6182                                     ha->pdev->irq);
6183                                 rval = QLA_ERROR;
6184                         } else {
6185                                 ha->isp_ops->enable_intrs(ha);
6186                                 rval = QLA_SUCCESS;
6187                         }
6188                 }
6189         } else {
6190                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
6191                     "the reset owner\n", ha->host_no, __func__,
6192                     ha->pdev->devfn);
6193                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
6194                      QLA8XXX_DEV_READY)) {
6195                         clear_bit(AF_FW_RECOVERY, &ha->flags);
6196                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
6197                         if (rval == QLA_SUCCESS) {
6198                                 ret = qla4xxx_request_irqs(ha);
6199                                 if (ret) {
6200                                         ql4_printk(KERN_WARNING, ha, "Failed to"
6201                                             " reserve interrupt %d already in"
6202                                             " use.\n", ha->pdev->irq);
6203                                         rval = QLA_ERROR;
6204                                 } else {
6205                                         ha->isp_ops->enable_intrs(ha);
6206                                         rval = QLA_SUCCESS;
6207                                 }
6208                         }
6209                         ha->isp_ops->idc_lock(ha);
6210                         qla4_8xxx_set_drv_active(ha);
6211                         ha->isp_ops->idc_unlock(ha);
6212                 }
6213         }
6214 exit_error_recovery:
6215         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
6216         return rval;
6217 }
6218
6219 static pci_ers_result_t
6220 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
6221 {
6222         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
6223         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6224         int rc;
6225
6226         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
6227             ha->host_no, __func__);
6228
6229         if (!is_aer_supported(ha))
6230                 return PCI_ERS_RESULT_NONE;
6231
6232         /* Restore the saved state of PCIe device -
6233          * BAR registers, PCI Config space, PCIX, MSI,
6234          * IOV states
6235          */
6236         pci_restore_state(pdev);
6237
6238         /* pci_restore_state() clears the saved_state flag of the device
6239          * save restored state which resets saved_state flag
6240          */
6241         pci_save_state(pdev);
6242
6243         /* Initialize device or resume if in suspended state */
6244         rc = pci_enable_device(pdev);
6245         if (rc) {
6246                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
6247                     "device after reset\n", ha->host_no, __func__);
6248                 goto exit_slot_reset;
6249         }
6250
6251         ha->isp_ops->disable_intrs(ha);
6252
6253         if (is_qla80XX(ha)) {
6254                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
6255                         ret = PCI_ERS_RESULT_RECOVERED;
6256                         goto exit_slot_reset;
6257                 } else
6258                         goto exit_slot_reset;
6259         }
6260
6261 exit_slot_reset:
6262         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
6263             "device after reset\n", ha->host_no, __func__, ret);
6264         return ret;
6265 }
6266
6267 static void
6268 qla4xxx_pci_resume(struct pci_dev *pdev)
6269 {
6270         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6271         int ret;
6272
6273         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
6274             ha->host_no, __func__);
6275
6276         ret = qla4xxx_wait_for_hba_online(ha);
6277         if (ret != QLA_SUCCESS) {
6278                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
6279                     "resume I/O from slot/link_reset\n", ha->host_no,
6280                      __func__);
6281         }
6282
6283         pci_cleanup_aer_uncorrect_error_status(pdev);
6284         clear_bit(AF_EEH_BUSY, &ha->flags);
6285 }
6286
6287 static struct pci_error_handlers qla4xxx_err_handler = {
6288         .error_detected = qla4xxx_pci_error_detected,
6289         .mmio_enabled = qla4xxx_pci_mmio_enabled,
6290         .slot_reset = qla4xxx_pci_slot_reset,
6291         .resume = qla4xxx_pci_resume,
6292 };
6293
6294 static struct pci_device_id qla4xxx_pci_tbl[] = {
6295         {
6296                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6297                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
6298                 .subvendor      = PCI_ANY_ID,
6299                 .subdevice      = PCI_ANY_ID,
6300         },
6301         {
6302                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6303                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
6304                 .subvendor      = PCI_ANY_ID,
6305                 .subdevice      = PCI_ANY_ID,
6306         },
6307         {
6308                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6309                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
6310                 .subvendor      = PCI_ANY_ID,
6311                 .subdevice      = PCI_ANY_ID,
6312         },
6313         {
6314                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6315                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
6316                 .subvendor      = PCI_ANY_ID,
6317                 .subdevice      = PCI_ANY_ID,
6318         },
6319         {
6320                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6321                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
6322                 .subvendor      = PCI_ANY_ID,
6323                 .subdevice      = PCI_ANY_ID,
6324         },
6325         {0, 0},
6326 };
6327 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
6328
6329 static struct pci_driver qla4xxx_pci_driver = {
6330         .name           = DRIVER_NAME,
6331         .id_table       = qla4xxx_pci_tbl,
6332         .probe          = qla4xxx_probe_adapter,
6333         .remove         = qla4xxx_remove_adapter,
6334         .err_handler = &qla4xxx_err_handler,
6335 };
6336
6337 static int __init qla4xxx_module_init(void)
6338 {
6339         int ret;
6340
6341         /* Allocate cache for SRBs. */
6342         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
6343                                        SLAB_HWCACHE_ALIGN, NULL);
6344         if (srb_cachep == NULL) {
6345                 printk(KERN_ERR
6346                        "%s: Unable to allocate SRB cache..."
6347                        "Failing load!\n", DRIVER_NAME);
6348                 ret = -ENOMEM;
6349                 goto no_srp_cache;
6350         }
6351
6352         /* Derive version string. */
6353         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
6354         if (ql4xextended_error_logging)
6355                 strcat(qla4xxx_version_str, "-debug");
6356
6357         qla4xxx_scsi_transport =
6358                 iscsi_register_transport(&qla4xxx_iscsi_transport);
6359         if (!qla4xxx_scsi_transport){
6360                 ret = -ENODEV;
6361                 goto release_srb_cache;
6362         }
6363
6364         ret = pci_register_driver(&qla4xxx_pci_driver);
6365         if (ret)
6366                 goto unregister_transport;
6367
6368         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
6369         return 0;
6370
6371 unregister_transport:
6372         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
6373 release_srb_cache:
6374         kmem_cache_destroy(srb_cachep);
6375 no_srp_cache:
6376         return ret;
6377 }
6378
6379 static void __exit qla4xxx_module_exit(void)
6380 {
6381         pci_unregister_driver(&qla4xxx_pci_driver);
6382         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
6383         kmem_cache_destroy(srb_cachep);
6384 }
6385
6386 module_init(qla4xxx_module_init);
6387 module_exit(qla4xxx_module_exit);
6388
6389 MODULE_AUTHOR("QLogic Corporation");
6390 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
6391 MODULE_LICENSE("GPL");
6392 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);