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 retrieve 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         if (is_qla8032(ha) &&
2950             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
2951                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
2952                            __func__);
2953                 /* disable pause frame for ISP83xx */
2954                 qla4_83xx_disable_pause(ha);
2955         }
2956
2957         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
2958
2959         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
2960                 reset_chip = 1;
2961
2962         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
2963          * do not reset adapter, jump to initialize_adapter */
2964         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
2965                 status = QLA_SUCCESS;
2966                 goto recover_ha_init_adapter;
2967         }
2968
2969         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
2970          * from eh_host_reset or ioctl module */
2971         if (is_qla80XX(ha) && !reset_chip &&
2972             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
2973
2974                 DEBUG2(ql4_printk(KERN_INFO, ha,
2975                     "scsi%ld: %s - Performing stop_firmware...\n",
2976                     ha->host_no, __func__));
2977                 status = ha->isp_ops->reset_firmware(ha);
2978                 if (status == QLA_SUCCESS) {
2979                         if (!test_bit(AF_FW_RECOVERY, &ha->flags))
2980                                 qla4xxx_cmd_wait(ha);
2981                         ha->isp_ops->disable_intrs(ha);
2982                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2983                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2984                 } else {
2985                         /* If the stop_firmware fails then
2986                          * reset the entire chip */
2987                         reset_chip = 1;
2988                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2989                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
2990                 }
2991         }
2992
2993         /* Issue full chip reset if recovering from a catastrophic error,
2994          * or if stop_firmware fails for ISP-8xxx.
2995          * This is the default case for ISP-4xxx */
2996         if (is_qla40XX(ha) || reset_chip) {
2997                 if (is_qla40XX(ha))
2998                         goto chip_reset;
2999
3000                 /* Check if 8XXX firmware is alive or not
3001                  * We may have arrived here from NEED_RESET
3002                  * detection only */
3003                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
3004                         goto chip_reset;
3005
3006                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
3007                 while (time_before(jiffies, wait)) {
3008                         if (qla4_8xxx_check_fw_alive(ha)) {
3009                                 qla4xxx_mailbox_premature_completion(ha);
3010                                 break;
3011                         }
3012
3013                         set_current_state(TASK_UNINTERRUPTIBLE);
3014                         schedule_timeout(HZ);
3015                 }
3016 chip_reset:
3017                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3018                         qla4xxx_cmd_wait(ha);
3019
3020                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3021                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3022                 DEBUG2(ql4_printk(KERN_INFO, ha,
3023                     "scsi%ld: %s - Performing chip reset..\n",
3024                     ha->host_no, __func__));
3025                 status = ha->isp_ops->reset_chip(ha);
3026         }
3027
3028         /* Flush any pending ddb changed AENs */
3029         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3030
3031 recover_ha_init_adapter:
3032         /* Upon successful firmware/chip reset, re-initialize the adapter */
3033         if (status == QLA_SUCCESS) {
3034                 /* For ISP-4xxx, force function 1 to always initialize
3035                  * before function 3 to prevent both funcions from
3036                  * stepping on top of the other */
3037                 if (is_qla40XX(ha) && (ha->mac_index == 3))
3038                         ssleep(6);
3039
3040                 /* NOTE: AF_ONLINE flag set upon successful completion of
3041                  *       qla4xxx_initialize_adapter */
3042                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
3043         }
3044
3045         /* Retry failed adapter initialization, if necessary
3046          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
3047          * case to prevent ping-pong resets between functions */
3048         if (!test_bit(AF_ONLINE, &ha->flags) &&
3049             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3050                 /* Adapter initialization failed, see if we can retry
3051                  * resetting the ha.
3052                  * Since we don't want to block the DPC for too long
3053                  * with multiple resets in the same thread,
3054                  * utilize DPC to retry */
3055                 if (is_qla80XX(ha)) {
3056                         ha->isp_ops->idc_lock(ha);
3057                         dev_state = qla4_8xxx_rd_direct(ha,
3058                                                         QLA8XXX_CRB_DEV_STATE);
3059                         ha->isp_ops->idc_unlock(ha);
3060                         if (dev_state == QLA8XXX_DEV_FAILED) {
3061                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
3062                                            "recover adapter. H/W is in Failed "
3063                                            "state\n", __func__);
3064                                 qla4xxx_dead_adapter_cleanup(ha);
3065                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3066                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3067                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3068                                                 &ha->dpc_flags);
3069                                 status = QLA_ERROR;
3070
3071                                 goto exit_recover;
3072                         }
3073                 }
3074
3075                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
3076                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
3077                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
3078                                       "(%d) more times\n", ha->host_no,
3079                                       ha->retry_reset_ha_cnt));
3080                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3081                         status = QLA_ERROR;
3082                 } else {
3083                         if (ha->retry_reset_ha_cnt > 0) {
3084                                 /* Schedule another Reset HA--DPC will retry */
3085                                 ha->retry_reset_ha_cnt--;
3086                                 DEBUG2(printk("scsi%ld: recover adapter - "
3087                                               "retry remaining %d\n",
3088                                               ha->host_no,
3089                                               ha->retry_reset_ha_cnt));
3090                                 status = QLA_ERROR;
3091                         }
3092
3093                         if (ha->retry_reset_ha_cnt == 0) {
3094                                 /* Recover adapter retries have been exhausted.
3095                                  * Adapter DEAD */
3096                                 DEBUG2(printk("scsi%ld: recover adapter "
3097                                               "failed - board disabled\n",
3098                                               ha->host_no));
3099                                 qla4xxx_dead_adapter_cleanup(ha);
3100                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3101                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3102                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3103                                           &ha->dpc_flags);
3104                                 status = QLA_ERROR;
3105                         }
3106                 }
3107         } else {
3108                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3109                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3110                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3111         }
3112
3113 exit_recover:
3114         ha->adapter_error_count++;
3115
3116         if (test_bit(AF_ONLINE, &ha->flags))
3117                 ha->isp_ops->enable_intrs(ha);
3118
3119         scsi_unblock_requests(ha->host);
3120
3121         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3122         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
3123             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
3124
3125         return status;
3126 }
3127
3128 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
3129 {
3130         struct iscsi_session *sess;
3131         struct ddb_entry *ddb_entry;
3132         struct scsi_qla_host *ha;
3133
3134         sess = cls_session->dd_data;
3135         ddb_entry = sess->dd_data;
3136         ha = ddb_entry->ha;
3137         if (!iscsi_is_session_online(cls_session)) {
3138                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
3139                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3140                                    " unblock session\n", ha->host_no, __func__,
3141                                    ddb_entry->fw_ddb_index);
3142                         iscsi_unblock_session(ddb_entry->sess);
3143                 } else {
3144                         /* Trigger relogin */
3145                         if (ddb_entry->ddb_type == FLASH_DDB) {
3146                                 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
3147                                         qla4xxx_arm_relogin_timer(ddb_entry);
3148                         } else
3149                                 iscsi_session_failure(cls_session->dd_data,
3150                                                       ISCSI_ERR_CONN_FAILED);
3151                 }
3152         }
3153 }
3154
3155 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
3156 {
3157         struct iscsi_session *sess;
3158         struct ddb_entry *ddb_entry;
3159         struct scsi_qla_host *ha;
3160
3161         sess = cls_session->dd_data;
3162         ddb_entry = sess->dd_data;
3163         ha = ddb_entry->ha;
3164         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3165                    " unblock session\n", ha->host_no, __func__,
3166                    ddb_entry->fw_ddb_index);
3167
3168         iscsi_unblock_session(ddb_entry->sess);
3169
3170         /* Start scan target */
3171         if (test_bit(AF_ONLINE, &ha->flags)) {
3172                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3173                            " start scan\n", ha->host_no, __func__,
3174                            ddb_entry->fw_ddb_index);
3175                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
3176         }
3177         return QLA_SUCCESS;
3178 }
3179
3180 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
3181 {
3182         struct iscsi_session *sess;
3183         struct ddb_entry *ddb_entry;
3184         struct scsi_qla_host *ha;
3185         int status = QLA_SUCCESS;
3186
3187         sess = cls_session->dd_data;
3188         ddb_entry = sess->dd_data;
3189         ha = ddb_entry->ha;
3190         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3191                    " unblock user space session\n", ha->host_no, __func__,
3192                    ddb_entry->fw_ddb_index);
3193
3194         if (!iscsi_is_session_online(cls_session)) {
3195                 iscsi_conn_start(ddb_entry->conn);
3196                 iscsi_conn_login_event(ddb_entry->conn,
3197                                        ISCSI_CONN_STATE_LOGGED_IN);
3198         } else {
3199                 ql4_printk(KERN_INFO, ha,
3200                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
3201                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
3202                            cls_session->sid);
3203                 status = QLA_ERROR;
3204         }
3205
3206         return status;
3207 }
3208
3209 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
3210 {
3211         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
3212 }
3213
3214 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3215 {
3216         uint16_t relogin_timer;
3217         struct iscsi_session *sess;
3218         struct ddb_entry *ddb_entry;
3219         struct scsi_qla_host *ha;
3220
3221         sess = cls_sess->dd_data;
3222         ddb_entry = sess->dd_data;
3223         ha = ddb_entry->ha;
3224
3225         relogin_timer = max(ddb_entry->default_relogin_timeout,
3226                             (uint16_t)RELOGIN_TOV);
3227         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
3228
3229         DEBUG2(ql4_printk(KERN_INFO, ha,
3230                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
3231                           ddb_entry->fw_ddb_index, relogin_timer));
3232
3233         qla4xxx_login_flash_ddb(cls_sess);
3234 }
3235
3236 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
3237 {
3238         struct iscsi_session *sess;
3239         struct ddb_entry *ddb_entry;
3240         struct scsi_qla_host *ha;
3241
3242         sess = cls_sess->dd_data;
3243         ddb_entry = sess->dd_data;
3244         ha = ddb_entry->ha;
3245
3246         if (!(ddb_entry->ddb_type == FLASH_DDB))
3247                 return;
3248
3249         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
3250             !iscsi_is_session_online(cls_sess)) {
3251                 DEBUG2(ql4_printk(KERN_INFO, ha,
3252                                   "relogin issued\n"));
3253                 qla4xxx_relogin_flash_ddb(cls_sess);
3254         }
3255 }
3256
3257 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
3258 {
3259         if (ha->dpc_thread)
3260                 queue_work(ha->dpc_thread, &ha->dpc_work);
3261 }
3262
3263 static struct qla4_work_evt *
3264 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
3265                    enum qla4_work_type type)
3266 {
3267         struct qla4_work_evt *e;
3268         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
3269
3270         e = kzalloc(size, GFP_ATOMIC);
3271         if (!e)
3272                 return NULL;
3273
3274         INIT_LIST_HEAD(&e->list);
3275         e->type = type;
3276         return e;
3277 }
3278
3279 static void qla4xxx_post_work(struct scsi_qla_host *ha,
3280                              struct qla4_work_evt *e)
3281 {
3282         unsigned long flags;
3283
3284         spin_lock_irqsave(&ha->work_lock, flags);
3285         list_add_tail(&e->list, &ha->work_list);
3286         spin_unlock_irqrestore(&ha->work_lock, flags);
3287         qla4xxx_wake_dpc(ha);
3288 }
3289
3290 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
3291                           enum iscsi_host_event_code aen_code,
3292                           uint32_t data_size, uint8_t *data)
3293 {
3294         struct qla4_work_evt *e;
3295
3296         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
3297         if (!e)
3298                 return QLA_ERROR;
3299
3300         e->u.aen.code = aen_code;
3301         e->u.aen.data_size = data_size;
3302         memcpy(e->u.aen.data, data, data_size);
3303
3304         qla4xxx_post_work(ha, e);
3305
3306         return QLA_SUCCESS;
3307 }
3308
3309 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
3310                                uint32_t status, uint32_t pid,
3311                                uint32_t data_size, uint8_t *data)
3312 {
3313         struct qla4_work_evt *e;
3314
3315         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
3316         if (!e)
3317                 return QLA_ERROR;
3318
3319         e->u.ping.status = status;
3320         e->u.ping.pid = pid;
3321         e->u.ping.data_size = data_size;
3322         memcpy(e->u.ping.data, data, data_size);
3323
3324         qla4xxx_post_work(ha, e);
3325
3326         return QLA_SUCCESS;
3327 }
3328
3329 static void qla4xxx_do_work(struct scsi_qla_host *ha)
3330 {
3331         struct qla4_work_evt *e, *tmp;
3332         unsigned long flags;
3333         LIST_HEAD(work);
3334
3335         spin_lock_irqsave(&ha->work_lock, flags);
3336         list_splice_init(&ha->work_list, &work);
3337         spin_unlock_irqrestore(&ha->work_lock, flags);
3338
3339         list_for_each_entry_safe(e, tmp, &work, list) {
3340                 list_del_init(&e->list);
3341
3342                 switch (e->type) {
3343                 case QLA4_EVENT_AEN:
3344                         iscsi_post_host_event(ha->host_no,
3345                                               &qla4xxx_iscsi_transport,
3346                                               e->u.aen.code,
3347                                               e->u.aen.data_size,
3348                                               e->u.aen.data);
3349                         break;
3350                 case QLA4_EVENT_PING_STATUS:
3351                         iscsi_ping_comp_event(ha->host_no,
3352                                               &qla4xxx_iscsi_transport,
3353                                               e->u.ping.status,
3354                                               e->u.ping.pid,
3355                                               e->u.ping.data_size,
3356                                               e->u.ping.data);
3357                         break;
3358                 default:
3359                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
3360                                    "supported", e->type);
3361                 }
3362                 kfree(e);
3363         }
3364 }
3365
3366 /**
3367  * qla4xxx_do_dpc - dpc routine
3368  * @data: in our case pointer to adapter structure
3369  *
3370  * This routine is a task that is schedule by the interrupt handler
3371  * to perform the background processing for interrupts.  We put it
3372  * on a task queue that is consumed whenever the scheduler runs; that's
3373  * so you can do anything (i.e. put the process to sleep etc).  In fact,
3374  * the mid-level tries to sleep when it reaches the driver threshold
3375  * "host->can_queue". This can cause a panic if we were in our interrupt code.
3376  **/
3377 static void qla4xxx_do_dpc(struct work_struct *work)
3378 {
3379         struct scsi_qla_host *ha =
3380                 container_of(work, struct scsi_qla_host, dpc_work);
3381         int status = QLA_ERROR;
3382
3383         DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
3384             "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
3385             ha->host_no, __func__, ha->flags, ha->dpc_flags))
3386
3387         /* Initialization not yet finished. Don't do anything yet. */
3388         if (!test_bit(AF_INIT_DONE, &ha->flags))
3389                 return;
3390
3391         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3392                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
3393                     ha->host_no, __func__, ha->flags));
3394                 return;
3395         }
3396
3397         /* post events to application */
3398         qla4xxx_do_work(ha);
3399
3400         if (is_qla80XX(ha)) {
3401                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
3402                         if (is_qla8032(ha)) {
3403                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3404                                            __func__);
3405                                 /* disable pause frame for ISP83xx */
3406                                 qla4_83xx_disable_pause(ha);
3407                         }
3408
3409                         ha->isp_ops->idc_lock(ha);
3410                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
3411                                             QLA8XXX_DEV_FAILED);
3412                         ha->isp_ops->idc_unlock(ha);
3413                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
3414                         qla4_8xxx_device_state_handler(ha);
3415                 }
3416
3417                 if (test_and_clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags))
3418                         qla4_83xx_post_idc_ack(ha);
3419
3420                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3421                         qla4_8xxx_need_qsnt_handler(ha);
3422                 }
3423         }
3424
3425         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
3426             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3427             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3428             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
3429                 if ((is_qla8022(ha) && ql4xdontresethba) ||
3430                     (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
3431                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
3432                             ha->host_no, __func__));
3433                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3434                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3435                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3436                         goto dpc_post_reset_ha;
3437                 }
3438                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3439                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
3440                         qla4xxx_recover_adapter(ha);
3441
3442                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3443                         uint8_t wait_time = RESET_INTR_TOV;
3444
3445                         while ((readw(&ha->reg->ctrl_status) &
3446                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
3447                                 if (--wait_time == 0)
3448                                         break;
3449                                 msleep(1000);
3450                         }
3451                         if (wait_time == 0)
3452                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
3453                                               "bit not cleared-- resetting\n",
3454                                               ha->host_no, __func__));
3455                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3456                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
3457                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3458                                 status = qla4xxx_recover_adapter(ha);
3459                         }
3460                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3461                         if (status == QLA_SUCCESS)
3462                                 ha->isp_ops->enable_intrs(ha);
3463                 }
3464         }
3465
3466 dpc_post_reset_ha:
3467         /* ---- process AEN? --- */
3468         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
3469                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
3470
3471         /* ---- Get DHCP IP Address? --- */
3472         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
3473                 qla4xxx_get_dhcp_ip_address(ha);
3474
3475         /* ---- relogin device? --- */
3476         if (adapter_up(ha) &&
3477             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
3478                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
3479         }
3480
3481         /* ---- link change? --- */
3482         if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
3483                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
3484                         /* ---- link down? --- */
3485                         qla4xxx_mark_all_devices_missing(ha);
3486                 } else {
3487                         /* ---- link up? --- *
3488                          * F/W will auto login to all devices ONLY ONCE after
3489                          * link up during driver initialization and runtime
3490                          * fatal error recovery.  Therefore, the driver must
3491                          * manually relogin to devices when recovering from
3492                          * connection failures, logouts, expired KATO, etc. */
3493                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
3494                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
3495                                 iscsi_host_for_each_session(ha->host,
3496                                                 qla4xxx_login_flash_ddb);
3497                         } else
3498                                 qla4xxx_relogin_all_devices(ha);
3499                 }
3500         }
3501 }
3502
3503 /**
3504  * qla4xxx_free_adapter - release the adapter
3505  * @ha: pointer to adapter structure
3506  **/
3507 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
3508 {
3509         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3510
3511         if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
3512                 /* Turn-off interrupts on the card. */
3513                 ha->isp_ops->disable_intrs(ha);
3514         }
3515
3516         if (is_qla40XX(ha)) {
3517                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
3518                        &ha->reg->ctrl_status);
3519                 readl(&ha->reg->ctrl_status);
3520         } else if (is_qla8022(ha)) {
3521                 writel(0, &ha->qla4_82xx_reg->host_int);
3522                 readl(&ha->qla4_82xx_reg->host_int);
3523         } else if (is_qla8032(ha)) {
3524                 writel(0, &ha->qla4_83xx_reg->risc_intr);
3525                 readl(&ha->qla4_83xx_reg->risc_intr);
3526         }
3527
3528         /* Remove timer thread, if present */
3529         if (ha->timer_active)
3530                 qla4xxx_stop_timer(ha);
3531
3532         /* Kill the kernel thread for this host */
3533         if (ha->dpc_thread)
3534                 destroy_workqueue(ha->dpc_thread);
3535
3536         /* Kill the kernel thread for this host */
3537         if (ha->task_wq)
3538                 destroy_workqueue(ha->task_wq);
3539
3540         /* Put firmware in known state */
3541         ha->isp_ops->reset_firmware(ha);
3542
3543         if (is_qla80XX(ha)) {
3544                 ha->isp_ops->idc_lock(ha);
3545                 qla4_8xxx_clear_drv_active(ha);
3546                 ha->isp_ops->idc_unlock(ha);
3547         }
3548
3549         /* Detach interrupts */
3550         if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
3551                 qla4xxx_free_irqs(ha);
3552
3553         /* free extra memory */
3554         qla4xxx_mem_free(ha);
3555 }
3556
3557 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
3558 {
3559         int status = 0;
3560         unsigned long mem_base, mem_len, db_base, db_len;
3561         struct pci_dev *pdev = ha->pdev;
3562
3563         status = pci_request_regions(pdev, DRIVER_NAME);
3564         if (status) {
3565                 printk(KERN_WARNING
3566                     "scsi(%ld) Failed to reserve PIO regions (%s) "
3567                     "status=%d\n", ha->host_no, pci_name(pdev), status);
3568                 goto iospace_error_exit;
3569         }
3570
3571         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
3572             __func__, pdev->revision));
3573         ha->revision_id = pdev->revision;
3574
3575         /* remap phys address */
3576         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
3577         mem_len = pci_resource_len(pdev, 0);
3578         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
3579             __func__, mem_base, mem_len));
3580
3581         /* mapping of pcibase pointer */
3582         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
3583         if (!ha->nx_pcibase) {
3584                 printk(KERN_ERR
3585                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
3586                 pci_release_regions(ha->pdev);
3587                 goto iospace_error_exit;
3588         }
3589
3590         /* Mapping of IO base pointer, door bell read and write pointer */
3591
3592         /* mapping of IO base pointer */
3593         if (is_qla8022(ha)) {
3594                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
3595                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
3596                                      (ha->pdev->devfn << 11));
3597                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
3598                                     QLA82XX_CAM_RAM_DB2);
3599         } else if (is_qla8032(ha)) {
3600                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
3601                                     ((uint8_t *)ha->nx_pcibase);
3602         }
3603
3604         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
3605         db_len = pci_resource_len(pdev, 4);
3606
3607         return 0;
3608 iospace_error_exit:
3609         return -ENOMEM;
3610 }
3611
3612 /***
3613  * qla4xxx_iospace_config - maps registers
3614  * @ha: pointer to adapter structure
3615  *
3616  * This routines maps HBA's registers from the pci address space
3617  * into the kernel virtual address space for memory mapped i/o.
3618  **/
3619 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
3620 {
3621         unsigned long pio, pio_len, pio_flags;
3622         unsigned long mmio, mmio_len, mmio_flags;
3623
3624         pio = pci_resource_start(ha->pdev, 0);
3625         pio_len = pci_resource_len(ha->pdev, 0);
3626         pio_flags = pci_resource_flags(ha->pdev, 0);
3627         if (pio_flags & IORESOURCE_IO) {
3628                 if (pio_len < MIN_IOBASE_LEN) {
3629                         ql4_printk(KERN_WARNING, ha,
3630                                 "Invalid PCI I/O region size\n");
3631                         pio = 0;
3632                 }
3633         } else {
3634                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
3635                 pio = 0;
3636         }
3637
3638         /* Use MMIO operations for all accesses. */
3639         mmio = pci_resource_start(ha->pdev, 1);
3640         mmio_len = pci_resource_len(ha->pdev, 1);
3641         mmio_flags = pci_resource_flags(ha->pdev, 1);
3642
3643         if (!(mmio_flags & IORESOURCE_MEM)) {
3644                 ql4_printk(KERN_ERR, ha,
3645                     "region #0 not an MMIO resource, aborting\n");
3646
3647                 goto iospace_error_exit;
3648         }
3649
3650         if (mmio_len < MIN_IOBASE_LEN) {
3651                 ql4_printk(KERN_ERR, ha,
3652                     "Invalid PCI mem region size, aborting\n");
3653                 goto iospace_error_exit;
3654         }
3655
3656         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
3657                 ql4_printk(KERN_WARNING, ha,
3658                     "Failed to reserve PIO/MMIO regions\n");
3659
3660                 goto iospace_error_exit;
3661         }
3662
3663         ha->pio_address = pio;
3664         ha->pio_length = pio_len;
3665         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
3666         if (!ha->reg) {
3667                 ql4_printk(KERN_ERR, ha,
3668                     "cannot remap MMIO, aborting\n");
3669
3670                 goto iospace_error_exit;
3671         }
3672
3673         return 0;
3674
3675 iospace_error_exit:
3676         return -ENOMEM;
3677 }
3678
3679 static struct isp_operations qla4xxx_isp_ops = {
3680         .iospace_config         = qla4xxx_iospace_config,
3681         .pci_config             = qla4xxx_pci_config,
3682         .disable_intrs          = qla4xxx_disable_intrs,
3683         .enable_intrs           = qla4xxx_enable_intrs,
3684         .start_firmware         = qla4xxx_start_firmware,
3685         .intr_handler           = qla4xxx_intr_handler,
3686         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
3687         .reset_chip             = qla4xxx_soft_reset,
3688         .reset_firmware         = qla4xxx_hw_reset,
3689         .queue_iocb             = qla4xxx_queue_iocb,
3690         .complete_iocb          = qla4xxx_complete_iocb,
3691         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
3692         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
3693         .get_sys_info           = qla4xxx_get_sys_info,
3694         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
3695         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
3696 };
3697
3698 static struct isp_operations qla4_82xx_isp_ops = {
3699         .iospace_config         = qla4_8xxx_iospace_config,
3700         .pci_config             = qla4_8xxx_pci_config,
3701         .disable_intrs          = qla4_82xx_disable_intrs,
3702         .enable_intrs           = qla4_82xx_enable_intrs,
3703         .start_firmware         = qla4_8xxx_load_risc,
3704         .restart_firmware       = qla4_82xx_try_start_fw,
3705         .intr_handler           = qla4_82xx_intr_handler,
3706         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
3707         .need_reset             = qla4_8xxx_need_reset,
3708         .reset_chip             = qla4_82xx_isp_reset,
3709         .reset_firmware         = qla4_8xxx_stop_firmware,
3710         .queue_iocb             = qla4_82xx_queue_iocb,
3711         .complete_iocb          = qla4_82xx_complete_iocb,
3712         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
3713         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
3714         .get_sys_info           = qla4_8xxx_get_sys_info,
3715         .rd_reg_direct          = qla4_82xx_rd_32,
3716         .wr_reg_direct          = qla4_82xx_wr_32,
3717         .rd_reg_indirect        = qla4_82xx_md_rd_32,
3718         .wr_reg_indirect        = qla4_82xx_md_wr_32,
3719         .idc_lock               = qla4_82xx_idc_lock,
3720         .idc_unlock             = qla4_82xx_idc_unlock,
3721         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
3722         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
3723         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
3724 };
3725
3726 static struct isp_operations qla4_83xx_isp_ops = {
3727         .iospace_config         = qla4_8xxx_iospace_config,
3728         .pci_config             = qla4_8xxx_pci_config,
3729         .disable_intrs          = qla4_83xx_disable_intrs,
3730         .enable_intrs           = qla4_83xx_enable_intrs,
3731         .start_firmware         = qla4_8xxx_load_risc,
3732         .restart_firmware       = qla4_83xx_start_firmware,
3733         .intr_handler           = qla4_83xx_intr_handler,
3734         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
3735         .need_reset             = qla4_8xxx_need_reset,
3736         .reset_chip             = qla4_83xx_isp_reset,
3737         .reset_firmware         = qla4_8xxx_stop_firmware,
3738         .queue_iocb             = qla4_83xx_queue_iocb,
3739         .complete_iocb          = qla4_83xx_complete_iocb,
3740         .rd_shdw_req_q_out      = qla4_83xx_rd_shdw_req_q_out,
3741         .rd_shdw_rsp_q_in       = qla4_83xx_rd_shdw_rsp_q_in,
3742         .get_sys_info           = qla4_8xxx_get_sys_info,
3743         .rd_reg_direct          = qla4_83xx_rd_reg,
3744         .wr_reg_direct          = qla4_83xx_wr_reg,
3745         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
3746         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
3747         .idc_lock               = qla4_83xx_drv_lock,
3748         .idc_unlock             = qla4_83xx_drv_unlock,
3749         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
3750         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
3751         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
3752 };
3753
3754 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3755 {
3756         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
3757 }
3758
3759 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3760 {
3761         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
3762 }
3763
3764 uint16_t qla4_83xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3765 {
3766         return (uint16_t)le32_to_cpu(readl(&ha->qla4_83xx_reg->req_q_out));
3767 }
3768
3769 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3770 {
3771         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
3772 }
3773
3774 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3775 {
3776         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
3777 }
3778
3779 uint16_t qla4_83xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3780 {
3781         return (uint16_t)le32_to_cpu(readl(&ha->qla4_83xx_reg->rsp_q_in));
3782 }
3783
3784 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
3785 {
3786         struct scsi_qla_host *ha = data;
3787         char *str = buf;
3788         int rc;
3789
3790         switch (type) {
3791         case ISCSI_BOOT_ETH_FLAGS:
3792                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3793                 break;
3794         case ISCSI_BOOT_ETH_INDEX:
3795                 rc = sprintf(str, "0\n");
3796                 break;
3797         case ISCSI_BOOT_ETH_MAC:
3798                 rc = sysfs_format_mac(str, ha->my_mac,
3799                                       MAC_ADDR_LEN);
3800                 break;
3801         default:
3802                 rc = -ENOSYS;
3803                 break;
3804         }
3805         return rc;
3806 }
3807
3808 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
3809 {
3810         int rc;
3811
3812         switch (type) {
3813         case ISCSI_BOOT_ETH_FLAGS:
3814         case ISCSI_BOOT_ETH_MAC:
3815         case ISCSI_BOOT_ETH_INDEX:
3816                 rc = S_IRUGO;
3817                 break;
3818         default:
3819                 rc = 0;
3820                 break;
3821         }
3822         return rc;
3823 }
3824
3825 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
3826 {
3827         struct scsi_qla_host *ha = data;
3828         char *str = buf;
3829         int rc;
3830
3831         switch (type) {
3832         case ISCSI_BOOT_INI_INITIATOR_NAME:
3833                 rc = sprintf(str, "%s\n", ha->name_string);
3834                 break;
3835         default:
3836                 rc = -ENOSYS;
3837                 break;
3838         }
3839         return rc;
3840 }
3841
3842 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
3843 {
3844         int rc;
3845
3846         switch (type) {
3847         case ISCSI_BOOT_INI_INITIATOR_NAME:
3848                 rc = S_IRUGO;
3849                 break;
3850         default:
3851                 rc = 0;
3852                 break;
3853         }
3854         return rc;
3855 }
3856
3857 static ssize_t
3858 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
3859                            char *buf)
3860 {
3861         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
3862         char *str = buf;
3863         int rc;
3864
3865         switch (type) {
3866         case ISCSI_BOOT_TGT_NAME:
3867                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
3868                 break;
3869         case ISCSI_BOOT_TGT_IP_ADDR:
3870                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
3871                         rc = sprintf(buf, "%pI4\n",
3872                                      &boot_conn->dest_ipaddr.ip_address);
3873                 else
3874                         rc = sprintf(str, "%pI6\n",
3875                                      &boot_conn->dest_ipaddr.ip_address);
3876                 break;
3877         case ISCSI_BOOT_TGT_PORT:
3878                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
3879                 break;
3880         case ISCSI_BOOT_TGT_CHAP_NAME:
3881                 rc = sprintf(str,  "%.*s\n",
3882                              boot_conn->chap.target_chap_name_length,
3883                              (char *)&boot_conn->chap.target_chap_name);
3884                 break;
3885         case ISCSI_BOOT_TGT_CHAP_SECRET:
3886                 rc = sprintf(str,  "%.*s\n",
3887                              boot_conn->chap.target_secret_length,
3888                              (char *)&boot_conn->chap.target_secret);
3889                 break;
3890         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3891                 rc = sprintf(str,  "%.*s\n",
3892                              boot_conn->chap.intr_chap_name_length,
3893                              (char *)&boot_conn->chap.intr_chap_name);
3894                 break;
3895         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3896                 rc = sprintf(str,  "%.*s\n",
3897                              boot_conn->chap.intr_secret_length,
3898                              (char *)&boot_conn->chap.intr_secret);
3899                 break;
3900         case ISCSI_BOOT_TGT_FLAGS:
3901                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3902                 break;
3903         case ISCSI_BOOT_TGT_NIC_ASSOC:
3904                 rc = sprintf(str, "0\n");
3905                 break;
3906         default:
3907                 rc = -ENOSYS;
3908                 break;
3909         }
3910         return rc;
3911 }
3912
3913 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
3914 {
3915         struct scsi_qla_host *ha = data;
3916         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
3917
3918         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3919 }
3920
3921 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
3922 {
3923         struct scsi_qla_host *ha = data;
3924         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
3925
3926         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3927 }
3928
3929 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
3930 {
3931         int rc;
3932
3933         switch (type) {
3934         case ISCSI_BOOT_TGT_NAME:
3935         case ISCSI_BOOT_TGT_IP_ADDR:
3936         case ISCSI_BOOT_TGT_PORT:
3937         case ISCSI_BOOT_TGT_CHAP_NAME:
3938         case ISCSI_BOOT_TGT_CHAP_SECRET:
3939         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3940         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3941         case ISCSI_BOOT_TGT_NIC_ASSOC:
3942         case ISCSI_BOOT_TGT_FLAGS:
3943                 rc = S_IRUGO;
3944                 break;
3945         default:
3946                 rc = 0;
3947                 break;
3948         }
3949         return rc;
3950 }
3951
3952 static void qla4xxx_boot_release(void *data)
3953 {
3954         struct scsi_qla_host *ha = data;
3955
3956         scsi_host_put(ha->host);
3957 }
3958
3959 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
3960 {
3961         dma_addr_t buf_dma;
3962         uint32_t addr, pri_addr, sec_addr;
3963         uint32_t offset;
3964         uint16_t func_num;
3965         uint8_t val;
3966         uint8_t *buf = NULL;
3967         size_t size = 13 * sizeof(uint8_t);
3968         int ret = QLA_SUCCESS;
3969
3970         func_num = PCI_FUNC(ha->pdev->devfn);
3971
3972         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
3973                    __func__, ha->pdev->device, func_num);
3974
3975         if (is_qla40XX(ha)) {
3976                 if (func_num == 1) {
3977                         addr = NVRAM_PORT0_BOOT_MODE;
3978                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
3979                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
3980                 } else if (func_num == 3) {
3981                         addr = NVRAM_PORT1_BOOT_MODE;
3982                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
3983                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
3984                 } else {
3985                         ret = QLA_ERROR;
3986                         goto exit_boot_info;
3987                 }
3988
3989                 /* Check Boot Mode */
3990                 val = rd_nvram_byte(ha, addr);
3991                 if (!(val & 0x07)) {
3992                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
3993                                           "options : 0x%x\n", __func__, val));
3994                         ret = QLA_ERROR;
3995                         goto exit_boot_info;
3996                 }
3997
3998                 /* get primary valid target index */
3999                 val = rd_nvram_byte(ha, pri_addr);
4000                 if (val & BIT_7)
4001                         ddb_index[0] = (val & 0x7f);
4002
4003                 /* get secondary valid target index */
4004                 val = rd_nvram_byte(ha, sec_addr);
4005                 if (val & BIT_7)
4006                         ddb_index[1] = (val & 0x7f);
4007
4008         } else if (is_qla8022(ha)) {
4009                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
4010                                          &buf_dma, GFP_KERNEL);
4011                 if (!buf) {
4012                         DEBUG2(ql4_printk(KERN_ERR, ha,
4013                                           "%s: Unable to allocate dma buffer\n",
4014                                            __func__));
4015                         ret = QLA_ERROR;
4016                         goto exit_boot_info;
4017                 }
4018
4019                 if (ha->port_num == 0)
4020                         offset = BOOT_PARAM_OFFSET_PORT0;
4021                 else if (ha->port_num == 1)
4022                         offset = BOOT_PARAM_OFFSET_PORT1;
4023                 else {
4024                         ret = QLA_ERROR;
4025                         goto exit_boot_info_free;
4026                 }
4027                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
4028                        offset;
4029                 if (qla4xxx_get_flash(ha, buf_dma, addr,
4030                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
4031                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
4032                                           " failed\n", ha->host_no, __func__));
4033                         ret = QLA_ERROR;
4034                         goto exit_boot_info_free;
4035                 }
4036                 /* Check Boot Mode */
4037                 if (!(buf[1] & 0x07)) {
4038                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
4039                                           " : 0x%x\n", buf[1]));
4040                         ret = QLA_ERROR;
4041                         goto exit_boot_info_free;
4042                 }
4043
4044                 /* get primary valid target index */
4045                 if (buf[2] & BIT_7)
4046                         ddb_index[0] = buf[2] & 0x7f;
4047
4048                 /* get secondary valid target index */
4049                 if (buf[11] & BIT_7)
4050                         ddb_index[1] = buf[11] & 0x7f;
4051         } else {
4052                 ret = QLA_ERROR;
4053                 goto exit_boot_info;
4054         }
4055
4056         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
4057                           " target ID %d\n", __func__, ddb_index[0],
4058                           ddb_index[1]));
4059
4060 exit_boot_info_free:
4061         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
4062 exit_boot_info:
4063         ha->pri_ddb_idx = ddb_index[0];
4064         ha->sec_ddb_idx = ddb_index[1];
4065         return ret;
4066 }
4067
4068 /**
4069  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
4070  * @ha: pointer to adapter structure
4071  * @username: CHAP username to be returned
4072  * @password: CHAP password to be returned
4073  *
4074  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
4075  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
4076  * So from the CHAP cache find the first BIDI CHAP entry and set it
4077  * to the boot record in sysfs.
4078  **/
4079 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
4080                             char *password)
4081 {
4082         int i, ret = -EINVAL;
4083         int max_chap_entries = 0;
4084         struct ql4_chap_table *chap_table;
4085
4086         if (is_qla8022(ha))
4087                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
4088                                                 sizeof(struct ql4_chap_table);
4089         else
4090                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
4091
4092         if (!ha->chap_list) {
4093                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
4094                 return ret;
4095         }
4096
4097         mutex_lock(&ha->chap_sem);
4098         for (i = 0; i < max_chap_entries; i++) {
4099                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
4100                 if (chap_table->cookie !=
4101                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
4102                         continue;
4103                 }
4104
4105                 if (chap_table->flags & BIT_7) /* local */
4106                         continue;
4107
4108                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
4109                         continue;
4110
4111                 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
4112                 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
4113                 ret = 0;
4114                 break;
4115         }
4116         mutex_unlock(&ha->chap_sem);
4117
4118         return ret;
4119 }
4120
4121
4122 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
4123                                    struct ql4_boot_session_info *boot_sess,
4124                                    uint16_t ddb_index)
4125 {
4126         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4127         struct dev_db_entry *fw_ddb_entry;
4128         dma_addr_t fw_ddb_entry_dma;
4129         uint16_t idx;
4130         uint16_t options;
4131         int ret = QLA_SUCCESS;
4132
4133         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4134                                           &fw_ddb_entry_dma, GFP_KERNEL);
4135         if (!fw_ddb_entry) {
4136                 DEBUG2(ql4_printk(KERN_ERR, ha,
4137                                   "%s: Unable to allocate dma buffer.\n",
4138                                   __func__));
4139                 ret = QLA_ERROR;
4140                 return ret;
4141         }
4142
4143         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
4144                                    fw_ddb_entry_dma, ddb_index)) {
4145                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
4146                                   "index [%d]\n", __func__, ddb_index));
4147                 ret = QLA_ERROR;
4148                 goto exit_boot_target;
4149         }
4150
4151         /* Update target name and IP from DDB */
4152         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
4153                min(sizeof(boot_sess->target_name),
4154                    sizeof(fw_ddb_entry->iscsi_name)));
4155
4156         options = le16_to_cpu(fw_ddb_entry->options);
4157         if (options & DDB_OPT_IPV6_DEVICE) {
4158                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4159                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
4160         } else {
4161                 boot_conn->dest_ipaddr.ip_type = 0x1;
4162                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4163                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
4164         }
4165
4166         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
4167
4168         /* update chap information */
4169         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4170
4171         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
4172
4173                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
4174
4175                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
4176                                        target_chap_name,
4177                                        (char *)&boot_conn->chap.target_secret,
4178                                        idx);
4179                 if (ret) {
4180                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
4181                         ret = QLA_ERROR;
4182                         goto exit_boot_target;
4183                 }
4184
4185                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4186                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4187         }
4188
4189         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4190
4191                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
4192
4193                 ret = qla4xxx_get_bidi_chap(ha,
4194                                     (char *)&boot_conn->chap.intr_chap_name,
4195                                     (char *)&boot_conn->chap.intr_secret);
4196
4197                 if (ret) {
4198                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
4199                         ret = QLA_ERROR;
4200                         goto exit_boot_target;
4201                 }
4202
4203                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4204                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4205         }
4206
4207 exit_boot_target:
4208         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4209                           fw_ddb_entry, fw_ddb_entry_dma);
4210         return ret;
4211 }
4212
4213 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
4214 {
4215         uint16_t ddb_index[2];
4216         int ret = QLA_ERROR;
4217         int rval;
4218
4219         memset(ddb_index, 0, sizeof(ddb_index));
4220         ddb_index[0] = 0xffff;
4221         ddb_index[1] = 0xffff;
4222         ret = get_fw_boot_info(ha, ddb_index);
4223         if (ret != QLA_SUCCESS) {
4224                 DEBUG2(ql4_printk(KERN_INFO, ha,
4225                                 "%s: No boot target configured.\n", __func__));
4226                 return ret;
4227         }
4228
4229         if (ql4xdisablesysfsboot)
4230                 return QLA_SUCCESS;
4231
4232         if (ddb_index[0] == 0xffff)
4233                 goto sec_target;
4234
4235         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
4236                                       ddb_index[0]);
4237         if (rval != QLA_SUCCESS) {
4238                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
4239                                   "configured\n", __func__));
4240         } else
4241                 ret = QLA_SUCCESS;
4242
4243 sec_target:
4244         if (ddb_index[1] == 0xffff)
4245                 goto exit_get_boot_info;
4246
4247         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
4248                                       ddb_index[1]);
4249         if (rval != QLA_SUCCESS) {
4250                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
4251                                   " configured\n", __func__));
4252         } else
4253                 ret = QLA_SUCCESS;
4254
4255 exit_get_boot_info:
4256         return ret;
4257 }
4258
4259 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
4260 {
4261         struct iscsi_boot_kobj *boot_kobj;
4262
4263         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
4264                 return QLA_ERROR;
4265
4266         if (ql4xdisablesysfsboot) {
4267                 ql4_printk(KERN_INFO, ha,
4268                            "%s: syfsboot disabled - driver will trigger login "
4269                            "and publish session for discovery .\n", __func__);
4270                 return QLA_SUCCESS;
4271         }
4272
4273
4274         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
4275         if (!ha->boot_kset)
4276                 goto kset_free;
4277
4278         if (!scsi_host_get(ha->host))
4279                 goto kset_free;
4280         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
4281                                              qla4xxx_show_boot_tgt_pri_info,
4282                                              qla4xxx_tgt_get_attr_visibility,
4283                                              qla4xxx_boot_release);
4284         if (!boot_kobj)
4285                 goto put_host;
4286
4287         if (!scsi_host_get(ha->host))
4288                 goto kset_free;
4289         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
4290                                              qla4xxx_show_boot_tgt_sec_info,
4291                                              qla4xxx_tgt_get_attr_visibility,
4292                                              qla4xxx_boot_release);
4293         if (!boot_kobj)
4294                 goto put_host;
4295
4296         if (!scsi_host_get(ha->host))
4297                 goto kset_free;
4298         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
4299                                                qla4xxx_show_boot_ini_info,
4300                                                qla4xxx_ini_get_attr_visibility,
4301                                                qla4xxx_boot_release);
4302         if (!boot_kobj)
4303                 goto put_host;
4304
4305         if (!scsi_host_get(ha->host))
4306                 goto kset_free;
4307         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
4308                                                qla4xxx_show_boot_eth_info,
4309                                                qla4xxx_eth_get_attr_visibility,
4310                                                qla4xxx_boot_release);
4311         if (!boot_kobj)
4312                 goto put_host;
4313
4314         return QLA_SUCCESS;
4315
4316 put_host:
4317         scsi_host_put(ha->host);
4318 kset_free:
4319         iscsi_boot_destroy_kset(ha->boot_kset);
4320         return -ENOMEM;
4321 }
4322
4323
4324 /**
4325  * qla4xxx_create chap_list - Create CHAP list from FLASH
4326  * @ha: pointer to adapter structure
4327  *
4328  * Read flash and make a list of CHAP entries, during login when a CHAP entry
4329  * is received, it will be checked in this list. If entry exist then the CHAP
4330  * entry index is set in the DDB. If CHAP entry does not exist in this list
4331  * then a new entry is added in FLASH in CHAP table and the index obtained is
4332  * used in the DDB.
4333  **/
4334 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
4335 {
4336         int rval = 0;
4337         uint8_t *chap_flash_data = NULL;
4338         uint32_t offset;
4339         dma_addr_t chap_dma;
4340         uint32_t chap_size = 0;
4341
4342         if (is_qla40XX(ha))
4343                 chap_size = MAX_CHAP_ENTRIES_40XX  *
4344                                         sizeof(struct ql4_chap_table);
4345         else    /* Single region contains CHAP info for both
4346                  * ports which is divided into half for each port.
4347                  */
4348                 chap_size = ha->hw.flt_chap_size / 2;
4349
4350         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
4351                                           &chap_dma, GFP_KERNEL);
4352         if (!chap_flash_data) {
4353                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
4354                 return;
4355         }
4356         if (is_qla40XX(ha))
4357                 offset = FLASH_CHAP_OFFSET;
4358         else {
4359                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
4360                 if (ha->port_num == 1)
4361                         offset += chap_size;
4362         }
4363
4364         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
4365         if (rval != QLA_SUCCESS)
4366                 goto exit_chap_list;
4367
4368         if (ha->chap_list == NULL)
4369                 ha->chap_list = vmalloc(chap_size);
4370         if (ha->chap_list == NULL) {
4371                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
4372                 goto exit_chap_list;
4373         }
4374
4375         memcpy(ha->chap_list, chap_flash_data, chap_size);
4376
4377 exit_chap_list:
4378         dma_free_coherent(&ha->pdev->dev, chap_size,
4379                         chap_flash_data, chap_dma);
4380 }
4381
4382 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
4383                                   struct ql4_tuple_ddb *tddb)
4384 {
4385         struct scsi_qla_host *ha;
4386         struct iscsi_cls_session *cls_sess;
4387         struct iscsi_cls_conn *cls_conn;
4388         struct iscsi_session *sess;
4389         struct iscsi_conn *conn;
4390
4391         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
4392         ha = ddb_entry->ha;
4393         cls_sess = ddb_entry->sess;
4394         sess = cls_sess->dd_data;
4395         cls_conn = ddb_entry->conn;
4396         conn = cls_conn->dd_data;
4397
4398         tddb->tpgt = sess->tpgt;
4399         tddb->port = conn->persistent_port;
4400         strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
4401         strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
4402 }
4403
4404 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
4405                                       struct ql4_tuple_ddb *tddb,
4406                                       uint8_t *flash_isid)
4407 {
4408         uint16_t options = 0;
4409
4410         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
4411         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
4412                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
4413
4414         options = le16_to_cpu(fw_ddb_entry->options);
4415         if (options & DDB_OPT_IPV6_DEVICE)
4416                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
4417         else
4418                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
4419
4420         tddb->port = le16_to_cpu(fw_ddb_entry->port);
4421
4422         if (flash_isid == NULL)
4423                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
4424                        sizeof(tddb->isid));
4425         else
4426                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
4427 }
4428
4429 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
4430                                      struct ql4_tuple_ddb *old_tddb,
4431                                      struct ql4_tuple_ddb *new_tddb,
4432                                      uint8_t is_isid_compare)
4433 {
4434         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4435                 return QLA_ERROR;
4436
4437         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
4438                 return QLA_ERROR;
4439
4440         if (old_tddb->port != new_tddb->port)
4441                 return QLA_ERROR;
4442
4443         /* For multi sessions, driver generates the ISID, so do not compare
4444          * ISID in reset path since it would be a comparison between the
4445          * driver generated ISID and firmware generated ISID. This could
4446          * lead to adding duplicated DDBs in the list as driver generated
4447          * ISID would not match firmware generated ISID.
4448          */
4449         if (is_isid_compare) {
4450                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
4451                         "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
4452                         __func__, old_tddb->isid[5], old_tddb->isid[4],
4453                         old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
4454                         old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
4455                         new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
4456                         new_tddb->isid[0]));
4457
4458                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4459                            sizeof(old_tddb->isid)))
4460                         return QLA_ERROR;
4461         }
4462
4463         DEBUG2(ql4_printk(KERN_INFO, ha,
4464                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
4465                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
4466                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
4467                           new_tddb->ip_addr, new_tddb->iscsi_name));
4468
4469         return QLA_SUCCESS;
4470 }
4471
4472 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
4473                                      struct dev_db_entry *fw_ddb_entry)
4474 {
4475         struct ddb_entry *ddb_entry;
4476         struct ql4_tuple_ddb *fw_tddb = NULL;
4477         struct ql4_tuple_ddb *tmp_tddb = NULL;
4478         int idx;
4479         int ret = QLA_ERROR;
4480
4481         fw_tddb = vzalloc(sizeof(*fw_tddb));
4482         if (!fw_tddb) {
4483                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4484                                   "Memory Allocation failed.\n"));
4485                 ret = QLA_SUCCESS;
4486                 goto exit_check;
4487         }
4488
4489         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4490         if (!tmp_tddb) {
4491                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4492                                   "Memory Allocation failed.\n"));
4493                 ret = QLA_SUCCESS;
4494                 goto exit_check;
4495         }
4496
4497         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4498
4499         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4500                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4501                 if (ddb_entry == NULL)
4502                         continue;
4503
4504                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
4505                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
4506                         ret = QLA_SUCCESS; /* found */
4507                         goto exit_check;
4508                 }
4509         }
4510
4511 exit_check:
4512         if (fw_tddb)
4513                 vfree(fw_tddb);
4514         if (tmp_tddb)
4515                 vfree(tmp_tddb);
4516         return ret;
4517 }
4518
4519 /**
4520  * qla4xxx_check_existing_isid - check if target with same isid exist
4521  *                               in target list
4522  * @list_nt: list of target
4523  * @isid: isid to check
4524  *
4525  * This routine return QLA_SUCCESS if target with same isid exist
4526  **/
4527 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
4528 {
4529         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4530         struct dev_db_entry *fw_ddb_entry;
4531
4532         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4533                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
4534
4535                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
4536                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
4537                         return QLA_SUCCESS;
4538                 }
4539         }
4540         return QLA_ERROR;
4541 }
4542
4543 /**
4544  * qla4xxx_update_isid - compare ddbs and updated isid
4545  * @ha: Pointer to host adapter structure.
4546  * @list_nt: list of nt target
4547  * @fw_ddb_entry: firmware ddb entry
4548  *
4549  * This routine update isid if ddbs have same iqn, same isid and
4550  * different IP addr.
4551  * Return QLA_SUCCESS if isid is updated.
4552  **/
4553 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
4554                                struct list_head *list_nt,
4555                                struct dev_db_entry *fw_ddb_entry)
4556 {
4557         uint8_t base_value, i;
4558
4559         base_value = fw_ddb_entry->isid[1] & 0x1f;
4560         for (i = 0; i < 8; i++) {
4561                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
4562                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4563                         break;
4564         }
4565
4566         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4567                 return QLA_ERROR;
4568
4569         return QLA_SUCCESS;
4570 }
4571
4572 /**
4573  * qla4xxx_should_update_isid - check if isid need to update
4574  * @ha: Pointer to host adapter structure.
4575  * @old_tddb: ddb tuple
4576  * @new_tddb: ddb tuple
4577  *
4578  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
4579  * same isid
4580  **/
4581 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
4582                                       struct ql4_tuple_ddb *old_tddb,
4583                                       struct ql4_tuple_ddb *new_tddb)
4584 {
4585         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
4586                 /* Same ip */
4587                 if (old_tddb->port == new_tddb->port)
4588                         return QLA_ERROR;
4589         }
4590
4591         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4592                 /* different iqn */
4593                 return QLA_ERROR;
4594
4595         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4596                    sizeof(old_tddb->isid)))
4597                 /* different isid */
4598                 return QLA_ERROR;
4599
4600         return QLA_SUCCESS;
4601 }
4602
4603 /**
4604  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
4605  * @ha: Pointer to host adapter structure.
4606  * @list_nt: list of nt target.
4607  * @fw_ddb_entry: firmware ddb entry.
4608  *
4609  * This routine check if fw_ddb_entry already exists in list_nt to avoid
4610  * duplicate ddb in list_nt.
4611  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
4612  * Note: This function also update isid of DDB if required.
4613  **/
4614
4615 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
4616                                        struct list_head *list_nt,
4617                                        struct dev_db_entry *fw_ddb_entry)
4618 {
4619         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
4620         struct ql4_tuple_ddb *fw_tddb = NULL;
4621         struct ql4_tuple_ddb *tmp_tddb = NULL;
4622         int rval, ret = QLA_ERROR;
4623
4624         fw_tddb = vzalloc(sizeof(*fw_tddb));
4625         if (!fw_tddb) {
4626                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4627                                   "Memory Allocation failed.\n"));
4628                 ret = QLA_SUCCESS;
4629                 goto exit_check;
4630         }
4631
4632         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4633         if (!tmp_tddb) {
4634                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4635                                   "Memory Allocation failed.\n"));
4636                 ret = QLA_SUCCESS;
4637                 goto exit_check;
4638         }
4639
4640         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4641
4642         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4643                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
4644                                           nt_ddb_idx->flash_isid);
4645                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
4646                 /* found duplicate ddb */
4647                 if (ret == QLA_SUCCESS)
4648                         goto exit_check;
4649         }
4650
4651         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4652                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
4653
4654                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
4655                 if (ret == QLA_SUCCESS) {
4656                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
4657                         if (rval == QLA_SUCCESS)
4658                                 ret = QLA_ERROR;
4659                         else
4660                                 ret = QLA_SUCCESS;
4661
4662                         goto exit_check;
4663                 }
4664         }
4665
4666 exit_check:
4667         if (fw_tddb)
4668                 vfree(fw_tddb);
4669         if (tmp_tddb)
4670                 vfree(tmp_tddb);
4671         return ret;
4672 }
4673
4674 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
4675 {
4676         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
4677
4678         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4679                 list_del_init(&ddb_idx->list);
4680                 vfree(ddb_idx);
4681         }
4682 }
4683
4684 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
4685                                         struct dev_db_entry *fw_ddb_entry)
4686 {
4687         struct iscsi_endpoint *ep;
4688         struct sockaddr_in *addr;
4689         struct sockaddr_in6 *addr6;
4690         struct sockaddr *dst_addr;
4691         char *ip;
4692
4693         /* TODO: need to destroy on unload iscsi_endpoint*/
4694         dst_addr = vmalloc(sizeof(*dst_addr));
4695         if (!dst_addr)
4696                 return NULL;
4697
4698         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
4699                 dst_addr->sa_family = AF_INET6;
4700                 addr6 = (struct sockaddr_in6 *)dst_addr;
4701                 ip = (char *)&addr6->sin6_addr;
4702                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
4703                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
4704
4705         } else {
4706                 dst_addr->sa_family = AF_INET;
4707                 addr = (struct sockaddr_in *)dst_addr;
4708                 ip = (char *)&addr->sin_addr;
4709                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
4710                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
4711         }
4712
4713         ep = qla4xxx_ep_connect(ha->host, dst_addr, 0);
4714         vfree(dst_addr);
4715         return ep;
4716 }
4717
4718 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
4719 {
4720         if (ql4xdisablesysfsboot)
4721                 return QLA_SUCCESS;
4722         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
4723                 return QLA_ERROR;
4724         return QLA_SUCCESS;
4725 }
4726
4727 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
4728                                           struct ddb_entry *ddb_entry)
4729 {
4730         uint16_t def_timeout;
4731
4732         ddb_entry->ddb_type = FLASH_DDB;
4733         ddb_entry->fw_ddb_index = INVALID_ENTRY;
4734         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
4735         ddb_entry->ha = ha;
4736         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
4737         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
4738
4739         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
4740         atomic_set(&ddb_entry->relogin_timer, 0);
4741         atomic_set(&ddb_entry->relogin_retry_count, 0);
4742         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
4743         ddb_entry->default_relogin_timeout =
4744                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
4745                 def_timeout : LOGIN_TOV;
4746         ddb_entry->default_time2wait =
4747                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
4748 }
4749
4750 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
4751 {
4752         uint32_t idx = 0;
4753         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
4754         uint32_t sts[MBOX_REG_COUNT];
4755         uint32_t ip_state;
4756         unsigned long wtime;
4757         int ret;
4758
4759         wtime = jiffies + (HZ * IP_CONFIG_TOV);
4760         do {
4761                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
4762                         if (ip_idx[idx] == -1)
4763                                 continue;
4764
4765                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
4766
4767                         if (ret == QLA_ERROR) {
4768                                 ip_idx[idx] = -1;
4769                                 continue;
4770                         }
4771
4772                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
4773
4774                         DEBUG2(ql4_printk(KERN_INFO, ha,
4775                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
4776                                           ip_idx[idx], ip_state));
4777                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
4778                             ip_state == IP_ADDRSTATE_INVALID ||
4779                             ip_state == IP_ADDRSTATE_PREFERRED ||
4780                             ip_state == IP_ADDRSTATE_DEPRICATED ||
4781                             ip_state == IP_ADDRSTATE_DISABLING)
4782                                 ip_idx[idx] = -1;
4783                 }
4784
4785                 /* Break if all IP states checked */
4786                 if ((ip_idx[0] == -1) &&
4787                     (ip_idx[1] == -1) &&
4788                     (ip_idx[2] == -1) &&
4789                     (ip_idx[3] == -1))
4790                         break;
4791                 schedule_timeout_uninterruptible(HZ);
4792         } while (time_after(wtime, jiffies));
4793 }
4794
4795 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
4796                                   struct list_head *list_st)
4797 {
4798         struct qla_ddb_index  *st_ddb_idx;
4799         int max_ddbs;
4800         int fw_idx_size;
4801         struct dev_db_entry *fw_ddb_entry;
4802         dma_addr_t fw_ddb_dma;
4803         int ret;
4804         uint32_t idx = 0, next_idx = 0;
4805         uint32_t state = 0, conn_err = 0;
4806         uint16_t conn_id = 0;
4807
4808         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4809                                       &fw_ddb_dma);
4810         if (fw_ddb_entry == NULL) {
4811                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4812                 goto exit_st_list;
4813         }
4814
4815         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4816                                      MAX_DEV_DB_ENTRIES;
4817         fw_idx_size = sizeof(struct qla_ddb_index);
4818
4819         for (idx = 0; idx < max_ddbs; idx = next_idx) {
4820                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4821                                               NULL, &next_idx, &state,
4822                                               &conn_err, NULL, &conn_id);
4823                 if (ret == QLA_ERROR)
4824                         break;
4825
4826                 /* Ignore DDB if invalid state (unassigned) */
4827                 if (state == DDB_DS_UNASSIGNED)
4828                         goto continue_next_st;
4829
4830                 /* Check if ST, add to the list_st */
4831                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
4832                         goto continue_next_st;
4833
4834                 st_ddb_idx = vzalloc(fw_idx_size);
4835                 if (!st_ddb_idx)
4836                         break;
4837
4838                 st_ddb_idx->fw_ddb_idx = idx;
4839
4840                 list_add_tail(&st_ddb_idx->list, list_st);
4841 continue_next_st:
4842                 if (next_idx == 0)
4843                         break;
4844         }
4845
4846 exit_st_list:
4847         if (fw_ddb_entry)
4848                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
4849 }
4850
4851 /**
4852  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
4853  * @ha: pointer to adapter structure
4854  * @list_ddb: List from which failed ddb to be removed
4855  *
4856  * Iterate over the list of DDBs and find and remove DDBs that are either in
4857  * no connection active state or failed state
4858  **/
4859 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
4860                                       struct list_head *list_ddb)
4861 {
4862         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
4863         uint32_t next_idx = 0;
4864         uint32_t state = 0, conn_err = 0;
4865         int ret;
4866
4867         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4868                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
4869                                               NULL, 0, NULL, &next_idx, &state,
4870                                               &conn_err, NULL, NULL);
4871                 if (ret == QLA_ERROR)
4872                         continue;
4873
4874                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
4875                     state == DDB_DS_SESSION_FAILED) {
4876                         list_del_init(&ddb_idx->list);
4877                         vfree(ddb_idx);
4878                 }
4879         }
4880 }
4881
4882 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
4883                                    struct dev_db_entry *fw_ddb_entry,
4884                                    int is_reset)
4885 {
4886         struct iscsi_cls_session *cls_sess;
4887         struct iscsi_session *sess;
4888         struct iscsi_cls_conn *cls_conn;
4889         struct iscsi_endpoint *ep;
4890         uint16_t cmds_max = 32;
4891         uint16_t conn_id = 0;
4892         uint32_t initial_cmdsn = 0;
4893         int ret = QLA_SUCCESS;
4894
4895         struct ddb_entry *ddb_entry = NULL;
4896
4897         /* Create session object, with INVALID_ENTRY,
4898          * the targer_id would get set when we issue the login
4899          */
4900         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
4901                                        cmds_max, sizeof(struct ddb_entry),
4902                                        sizeof(struct ql4_task_data),
4903                                        initial_cmdsn, INVALID_ENTRY);
4904         if (!cls_sess) {
4905                 ret = QLA_ERROR;
4906                 goto exit_setup;
4907         }
4908
4909         /*
4910          * so calling module_put function to decrement the
4911          * reference count.
4912          **/
4913         module_put(qla4xxx_iscsi_transport.owner);
4914         sess = cls_sess->dd_data;
4915         ddb_entry = sess->dd_data;
4916         ddb_entry->sess = cls_sess;
4917
4918         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
4919         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
4920                sizeof(struct dev_db_entry));
4921
4922         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry);
4923
4924         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
4925
4926         if (!cls_conn) {
4927                 ret = QLA_ERROR;
4928                 goto exit_setup;
4929         }
4930
4931         ddb_entry->conn = cls_conn;
4932
4933         /* Setup ep, for displaying attributes in sysfs */
4934         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
4935         if (ep) {
4936                 ep->conn = cls_conn;
4937                 cls_conn->ep = ep;
4938         } else {
4939                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
4940                 ret = QLA_ERROR;
4941                 goto exit_setup;
4942         }
4943
4944         /* Update sess/conn params */
4945         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
4946
4947         if (is_reset == RESET_ADAPTER) {
4948                 iscsi_block_session(cls_sess);
4949                 /* Use the relogin path to discover new devices
4950                  *  by short-circuting the logic of setting
4951                  *  timer to relogin - instead set the flags
4952                  *  to initiate login right away.
4953                  */
4954                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4955                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4956         }
4957
4958 exit_setup:
4959         return ret;
4960 }
4961
4962 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
4963                                   struct list_head *list_nt, int is_reset)
4964 {
4965         struct dev_db_entry *fw_ddb_entry;
4966         dma_addr_t fw_ddb_dma;
4967         int max_ddbs;
4968         int fw_idx_size;
4969         int ret;
4970         uint32_t idx = 0, next_idx = 0;
4971         uint32_t state = 0, conn_err = 0;
4972         uint16_t conn_id = 0;
4973         struct qla_ddb_index  *nt_ddb_idx;
4974
4975         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4976                                       &fw_ddb_dma);
4977         if (fw_ddb_entry == NULL) {
4978                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4979                 goto exit_nt_list;
4980         }
4981         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4982                                      MAX_DEV_DB_ENTRIES;
4983         fw_idx_size = sizeof(struct qla_ddb_index);
4984
4985         for (idx = 0; idx < max_ddbs; idx = next_idx) {
4986                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4987                                               NULL, &next_idx, &state,
4988                                               &conn_err, NULL, &conn_id);
4989                 if (ret == QLA_ERROR)
4990                         break;
4991
4992                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
4993                         goto continue_next_nt;
4994
4995                 /* Check if NT, then add to list it */
4996                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
4997                         goto continue_next_nt;
4998
4999                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
5000                     state == DDB_DS_SESSION_FAILED))
5001                         goto continue_next_nt;
5002
5003                 DEBUG2(ql4_printk(KERN_INFO, ha,
5004                                   "Adding  DDB to session = 0x%x\n", idx));
5005                 if (is_reset == INIT_ADAPTER) {
5006                         nt_ddb_idx = vmalloc(fw_idx_size);
5007                         if (!nt_ddb_idx)
5008                                 break;
5009
5010                         nt_ddb_idx->fw_ddb_idx = idx;
5011
5012                         /* Copy original isid as it may get updated in function
5013                          * qla4xxx_update_isid(). We need original isid in
5014                          * function qla4xxx_compare_tuple_ddb to find duplicate
5015                          * target */
5016                         memcpy(&nt_ddb_idx->flash_isid[0],
5017                                &fw_ddb_entry->isid[0],
5018                                sizeof(nt_ddb_idx->flash_isid));
5019
5020                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
5021                                                           fw_ddb_entry);
5022                         if (ret == QLA_SUCCESS) {
5023                                 /* free nt_ddb_idx and do not add to list_nt */
5024                                 vfree(nt_ddb_idx);
5025                                 goto continue_next_nt;
5026                         }
5027
5028                         /* Copy updated isid */
5029                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
5030                                sizeof(struct dev_db_entry));
5031
5032                         list_add_tail(&nt_ddb_idx->list, list_nt);
5033                 } else if (is_reset == RESET_ADAPTER) {
5034                         if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
5035                                                                 QLA_SUCCESS)
5036                                 goto continue_next_nt;
5037                 }
5038
5039                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset);
5040                 if (ret == QLA_ERROR)
5041                         goto exit_nt_list;
5042
5043 continue_next_nt:
5044                 if (next_idx == 0)
5045                         break;
5046         }
5047
5048 exit_nt_list:
5049         if (fw_ddb_entry)
5050                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5051 }
5052
5053 /**
5054  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
5055  * @ha: pointer to adapter structure
5056  * @is_reset: Is this init path or reset path
5057  *
5058  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
5059  * using connection open, then create the list of normal targets (nt)
5060  * from firmware DDBs. Based on the list of nt setup session and connection
5061  * objects.
5062  **/
5063 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
5064 {
5065         uint16_t tmo = 0;
5066         struct list_head list_st, list_nt;
5067         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
5068         unsigned long wtime;
5069
5070         if (!test_bit(AF_LINK_UP, &ha->flags)) {
5071                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
5072                 ha->is_reset = is_reset;
5073                 return;
5074         }
5075
5076         INIT_LIST_HEAD(&list_st);
5077         INIT_LIST_HEAD(&list_nt);
5078
5079         qla4xxx_build_st_list(ha, &list_st);
5080
5081         /* Before issuing conn open mbox, ensure all IPs states are configured
5082          * Note, conn open fails if IPs are not configured
5083          */
5084         qla4xxx_wait_for_ip_configuration(ha);
5085
5086         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
5087         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
5088                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
5089         }
5090
5091         /* Wait to ensure all sendtargets are done for min 12 sec wait */
5092         tmo = ((ha->def_timeout > LOGIN_TOV) &&
5093                (ha->def_timeout < LOGIN_TOV * 10) ?
5094                ha->def_timeout : LOGIN_TOV);
5095
5096         DEBUG2(ql4_printk(KERN_INFO, ha,
5097                           "Default time to wait for build ddb %d\n", tmo));
5098
5099         wtime = jiffies + (HZ * tmo);
5100         do {
5101                 if (list_empty(&list_st))
5102                         break;
5103
5104                 qla4xxx_remove_failed_ddb(ha, &list_st);
5105                 schedule_timeout_uninterruptible(HZ / 10);
5106         } while (time_after(wtime, jiffies));
5107
5108         /* Free up the sendtargets list */
5109         qla4xxx_free_ddb_list(&list_st);
5110
5111         qla4xxx_build_nt_list(ha, &list_nt, is_reset);
5112
5113         qla4xxx_free_ddb_list(&list_nt);
5114
5115         qla4xxx_free_ddb_index(ha);
5116 }
5117
5118 /**
5119  * qla4xxx_probe_adapter - callback function to probe HBA
5120  * @pdev: pointer to pci_dev structure
5121  * @pci_device_id: pointer to pci_device entry
5122  *
5123  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
5124  * It returns zero if successful. It also initializes all data necessary for
5125  * the driver.
5126  **/
5127 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
5128                                  const struct pci_device_id *ent)
5129 {
5130         int ret = -ENODEV, status;
5131         struct Scsi_Host *host;
5132         struct scsi_qla_host *ha;
5133         uint8_t init_retry_count = 0;
5134         char buf[34];
5135         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
5136         uint32_t dev_state;
5137
5138         if (pci_enable_device(pdev))
5139                 return -1;
5140
5141         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
5142         if (host == NULL) {
5143                 printk(KERN_WARNING
5144                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
5145                 goto probe_disable_device;
5146         }
5147
5148         /* Clear our data area */
5149         ha = to_qla_host(host);
5150         memset(ha, 0, sizeof(*ha));
5151
5152         /* Save the information from PCI BIOS.  */
5153         ha->pdev = pdev;
5154         ha->host = host;
5155         ha->host_no = host->host_no;
5156         ha->func_num = PCI_FUNC(ha->pdev->devfn);
5157
5158         pci_enable_pcie_error_reporting(pdev);
5159
5160         /* Setup Runtime configurable options */
5161         if (is_qla8022(ha)) {
5162                 ha->isp_ops = &qla4_82xx_isp_ops;
5163                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
5164                 ha->qdr_sn_window = -1;
5165                 ha->ddr_mn_window = -1;
5166                 ha->curr_window = 255;
5167                 nx_legacy_intr = &legacy_intr[ha->func_num];
5168                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
5169                 ha->nx_legacy_intr.tgt_status_reg =
5170                         nx_legacy_intr->tgt_status_reg;
5171                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
5172                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
5173         } else if (is_qla8032(ha)) {
5174                 ha->isp_ops = &qla4_83xx_isp_ops;
5175                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
5176         } else {
5177                 ha->isp_ops = &qla4xxx_isp_ops;
5178         }
5179
5180         if (is_qla80XX(ha)) {
5181                 rwlock_init(&ha->hw_lock);
5182                 ha->pf_bit = ha->func_num << 16;
5183                 /* Set EEH reset type to fundamental if required by hba */
5184                 pdev->needs_freset = 1;
5185         }
5186
5187         /* Configure PCI I/O space. */
5188         ret = ha->isp_ops->iospace_config(ha);
5189         if (ret)
5190                 goto probe_failed_ioconfig;
5191
5192         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
5193                    pdev->device, pdev->irq, ha->reg);
5194
5195         qla4xxx_config_dma_addressing(ha);
5196
5197         /* Initialize lists and spinlocks. */
5198         INIT_LIST_HEAD(&ha->free_srb_q);
5199
5200         mutex_init(&ha->mbox_sem);
5201         mutex_init(&ha->chap_sem);
5202         init_completion(&ha->mbx_intr_comp);
5203         init_completion(&ha->disable_acb_comp);
5204
5205         spin_lock_init(&ha->hardware_lock);
5206         spin_lock_init(&ha->work_lock);
5207
5208         /* Initialize work list */
5209         INIT_LIST_HEAD(&ha->work_list);
5210
5211         /* Allocate dma buffers */
5212         if (qla4xxx_mem_alloc(ha)) {
5213                 ql4_printk(KERN_WARNING, ha,
5214                     "[ERROR] Failed to allocate memory for adapter\n");
5215
5216                 ret = -ENOMEM;
5217                 goto probe_failed;
5218         }
5219
5220         host->cmd_per_lun = 3;
5221         host->max_channel = 0;
5222         host->max_lun = MAX_LUNS - 1;
5223         host->max_id = MAX_TARGETS;
5224         host->max_cmd_len = IOCB_MAX_CDB_LEN;
5225         host->can_queue = MAX_SRBS ;
5226         host->transportt = qla4xxx_scsi_transport;
5227
5228         ret = scsi_init_shared_tag_map(host, MAX_SRBS);
5229         if (ret) {
5230                 ql4_printk(KERN_WARNING, ha,
5231                            "%s: scsi_init_shared_tag_map failed\n", __func__);
5232                 goto probe_failed;
5233         }
5234
5235         pci_set_drvdata(pdev, ha);
5236
5237         ret = scsi_add_host(host, &pdev->dev);
5238         if (ret)
5239                 goto probe_failed;
5240
5241         if (is_qla80XX(ha))
5242                 qla4_8xxx_get_flash_info(ha);
5243
5244         if (is_qla8032(ha)) {
5245                 qla4_83xx_read_reset_template(ha);
5246                 /*
5247                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
5248                  * If DONRESET_BIT0 is set, drivers should not set dev_state
5249                  * to NEED_RESET. But if NEED_RESET is set, drivers should
5250                  * should honor the reset.
5251                  */
5252                 if (ql4xdontresethba == 1)
5253                         qla4_83xx_set_idc_dontreset(ha);
5254         }
5255
5256         /*
5257          * Initialize the Host adapter request/response queues and
5258          * firmware
5259          * NOTE: interrupts enabled upon successful completion
5260          */
5261         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5262
5263         /* Dont retry adapter initialization if IRQ allocation failed */
5264         if (!test_bit(AF_IRQ_ATTACHED, &ha->flags))
5265                 goto skip_retry_init;
5266
5267         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
5268             init_retry_count++ < MAX_INIT_RETRIES) {
5269
5270                 if (is_qla80XX(ha)) {
5271                         ha->isp_ops->idc_lock(ha);
5272                         dev_state = qla4_8xxx_rd_direct(ha,
5273                                                         QLA82XX_CRB_DEV_STATE);
5274                         ha->isp_ops->idc_unlock(ha);
5275                         if (dev_state == QLA8XXX_DEV_FAILED) {
5276                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
5277                                     "initialize adapter. H/W is in failed state\n",
5278                                     __func__);
5279                                 break;
5280                         }
5281                 }
5282                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
5283                               "(%d)\n", __func__, init_retry_count));
5284
5285                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
5286                         continue;
5287
5288                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5289         }
5290
5291 skip_retry_init:
5292         if (!test_bit(AF_ONLINE, &ha->flags)) {
5293                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
5294
5295                 if ((is_qla8022(ha) && ql4xdontresethba) ||
5296                     (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
5297                         /* Put the device in failed state. */
5298                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
5299                         ha->isp_ops->idc_lock(ha);
5300                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5301                                             QLA8XXX_DEV_FAILED);
5302                         ha->isp_ops->idc_unlock(ha);
5303                 }
5304                 ret = -ENODEV;
5305                 goto remove_host;
5306         }
5307
5308         /* Startup the kernel thread for this host adapter. */
5309         DEBUG2(printk("scsi: %s: Starting kernel thread for "
5310                       "qla4xxx_dpc\n", __func__));
5311         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
5312         ha->dpc_thread = create_singlethread_workqueue(buf);
5313         if (!ha->dpc_thread) {
5314                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
5315                 ret = -ENODEV;
5316                 goto remove_host;
5317         }
5318         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
5319
5320         sprintf(buf, "qla4xxx_%lu_task", ha->host_no);
5321         ha->task_wq = alloc_workqueue(buf, WQ_MEM_RECLAIM, 1);
5322         if (!ha->task_wq) {
5323                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
5324                 ret = -ENODEV;
5325                 goto remove_host;
5326         }
5327
5328         /*
5329          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
5330          * (which is called indirectly by qla4xxx_initialize_adapter),
5331          * so that irqs will be registered after crbinit but before
5332          * mbx_intr_enable.
5333          */
5334         if (is_qla40XX(ha)) {
5335                 ret = qla4xxx_request_irqs(ha);
5336                 if (ret) {
5337                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
5338                             "interrupt %d already in use.\n", pdev->irq);
5339                         goto remove_host;
5340                 }
5341         }
5342
5343         pci_save_state(ha->pdev);
5344         ha->isp_ops->enable_intrs(ha);
5345
5346         /* Start timer thread. */
5347         qla4xxx_start_timer(ha, qla4xxx_timer, 1);
5348
5349         set_bit(AF_INIT_DONE, &ha->flags);
5350
5351         qla4_8xxx_alloc_sysfs_attr(ha);
5352
5353         printk(KERN_INFO
5354                " QLogic iSCSI HBA Driver version: %s\n"
5355                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
5356                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
5357                ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
5358                ha->patch_number, ha->build_number);
5359
5360         /* Set the driver version */
5361         if (is_qla80XX(ha))
5362                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
5363
5364         if (qla4xxx_setup_boot_info(ha))
5365                 ql4_printk(KERN_ERR, ha,
5366                            "%s: No iSCSI boot target configured\n", __func__);
5367
5368                 /* Perform the build ddb list and login to each */
5369         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
5370         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
5371
5372         qla4xxx_create_chap_list(ha);
5373
5374         qla4xxx_create_ifaces(ha);
5375         return 0;
5376
5377 remove_host:
5378         scsi_remove_host(ha->host);
5379
5380 probe_failed:
5381         qla4xxx_free_adapter(ha);
5382
5383 probe_failed_ioconfig:
5384         pci_disable_pcie_error_reporting(pdev);
5385         scsi_host_put(ha->host);
5386
5387 probe_disable_device:
5388         pci_disable_device(pdev);
5389
5390         return ret;
5391 }
5392
5393 /**
5394  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
5395  * @ha: pointer to adapter structure
5396  *
5397  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
5398  * so that the other port will not re-initialize while in the process of
5399  * removing the ha due to driver unload or hba hotplug.
5400  **/
5401 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
5402 {
5403         struct scsi_qla_host *other_ha = NULL;
5404         struct pci_dev *other_pdev = NULL;
5405         int fn = ISP4XXX_PCI_FN_2;
5406
5407         /*iscsi function numbers for ISP4xxx is 1 and 3*/
5408         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
5409                 fn = ISP4XXX_PCI_FN_1;
5410
5411         other_pdev =
5412                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
5413                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
5414                 fn));
5415
5416         /* Get other_ha if other_pdev is valid and state is enable*/
5417         if (other_pdev) {
5418                 if (atomic_read(&other_pdev->enable_cnt)) {
5419                         other_ha = pci_get_drvdata(other_pdev);
5420                         if (other_ha) {
5421                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
5422                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
5423                                     "Prevent %s reinit\n", __func__,
5424                                     dev_name(&other_ha->pdev->dev)));
5425                         }
5426                 }
5427                 pci_dev_put(other_pdev);
5428         }
5429 }
5430
5431 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
5432 {
5433         struct ddb_entry *ddb_entry;
5434         int options;
5435         int idx;
5436
5437         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
5438
5439                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
5440                 if ((ddb_entry != NULL) &&
5441                     (ddb_entry->ddb_type == FLASH_DDB)) {
5442
5443                         options = LOGOUT_OPTION_CLOSE_SESSION;
5444                         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
5445                             == QLA_ERROR)
5446                                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
5447                                            __func__);
5448
5449                         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
5450                         /*
5451                          * we have decremented the reference count of the driver
5452                          * when we setup the session to have the driver unload
5453                          * to be seamless without actually destroying the
5454                          * session
5455                          **/
5456                         try_module_get(qla4xxx_iscsi_transport.owner);
5457                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
5458                         qla4xxx_free_ddb(ha, ddb_entry);
5459                         iscsi_session_teardown(ddb_entry->sess);
5460                 }
5461         }
5462 }
5463 /**
5464  * qla4xxx_remove_adapter - callback function to remove adapter.
5465  * @pci_dev: PCI device pointer
5466  **/
5467 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
5468 {
5469         struct scsi_qla_host *ha;
5470
5471         /*
5472          * If the PCI device is disabled then it means probe_adapter had
5473          * failed and resources already cleaned up on probe_adapter exit.
5474          */
5475         if (!pci_is_enabled(pdev))
5476                 return;
5477
5478         ha = pci_get_drvdata(pdev);
5479
5480         if (is_qla40XX(ha))
5481                 qla4xxx_prevent_other_port_reinit(ha);
5482
5483         /* destroy iface from sysfs */
5484         qla4xxx_destroy_ifaces(ha);
5485
5486         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
5487                 iscsi_boot_destroy_kset(ha->boot_kset);
5488
5489         qla4xxx_destroy_fw_ddb_session(ha);
5490         qla4_8xxx_free_sysfs_attr(ha);
5491
5492         scsi_remove_host(ha->host);
5493
5494         qla4xxx_free_adapter(ha);
5495
5496         scsi_host_put(ha->host);
5497
5498         pci_disable_pcie_error_reporting(pdev);
5499         pci_disable_device(pdev);
5500         pci_set_drvdata(pdev, NULL);
5501 }
5502
5503 /**
5504  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
5505  * @ha: HA context
5506  *
5507  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
5508  * supported addressing method.
5509  */
5510 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
5511 {
5512         int retval;
5513
5514         /* Update our PCI device dma_mask for full 64 bit mask */
5515         if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
5516                 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
5517                         dev_dbg(&ha->pdev->dev,
5518                                   "Failed to set 64 bit PCI consistent mask; "
5519                                    "using 32 bit.\n");
5520                         retval = pci_set_consistent_dma_mask(ha->pdev,
5521                                                              DMA_BIT_MASK(32));
5522                 }
5523         } else
5524                 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
5525 }
5526
5527 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
5528 {
5529         struct iscsi_cls_session *cls_sess;
5530         struct iscsi_session *sess;
5531         struct ddb_entry *ddb;
5532         int queue_depth = QL4_DEF_QDEPTH;
5533
5534         cls_sess = starget_to_session(sdev->sdev_target);
5535         sess = cls_sess->dd_data;
5536         ddb = sess->dd_data;
5537
5538         sdev->hostdata = ddb;
5539         sdev->tagged_supported = 1;
5540
5541         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
5542                 queue_depth = ql4xmaxqdepth;
5543
5544         scsi_activate_tcq(sdev, queue_depth);
5545         return 0;
5546 }
5547
5548 static int qla4xxx_slave_configure(struct scsi_device *sdev)
5549 {
5550         sdev->tagged_supported = 1;
5551         return 0;
5552 }
5553
5554 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
5555 {
5556         scsi_deactivate_tcq(sdev, 1);
5557 }
5558
5559 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
5560                                       int reason)
5561 {
5562         if (!ql4xqfulltracking)
5563                 return -EOPNOTSUPP;
5564
5565         return iscsi_change_queue_depth(sdev, qdepth, reason);
5566 }
5567
5568 /**
5569  * qla4xxx_del_from_active_array - returns an active srb
5570  * @ha: Pointer to host adapter structure.
5571  * @index: index into the active_array
5572  *
5573  * This routine removes and returns the srb at the specified index
5574  **/
5575 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
5576     uint32_t index)
5577 {
5578         struct srb *srb = NULL;
5579         struct scsi_cmnd *cmd = NULL;
5580
5581         cmd = scsi_host_find_tag(ha->host, index);
5582         if (!cmd)
5583                 return srb;
5584
5585         srb = (struct srb *)CMD_SP(cmd);
5586         if (!srb)
5587                 return srb;
5588
5589         /* update counters */
5590         if (srb->flags & SRB_DMA_VALID) {
5591                 ha->req_q_count += srb->iocb_cnt;
5592                 ha->iocb_cnt -= srb->iocb_cnt;
5593                 if (srb->cmd)
5594                         srb->cmd->host_scribble =
5595                                 (unsigned char *)(unsigned long) MAX_SRBS;
5596         }
5597         return srb;
5598 }
5599
5600 /**
5601  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
5602  * @ha: Pointer to host adapter structure.
5603  * @cmd: Scsi Command to wait on.
5604  *
5605  * This routine waits for the command to be returned by the Firmware
5606  * for some max time.
5607  **/
5608 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
5609                                       struct scsi_cmnd *cmd)
5610 {
5611         int done = 0;
5612         struct srb *rp;
5613         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
5614         int ret = SUCCESS;
5615
5616         /* Dont wait on command if PCI error is being handled
5617          * by PCI AER driver
5618          */
5619         if (unlikely(pci_channel_offline(ha->pdev)) ||
5620             (test_bit(AF_EEH_BUSY, &ha->flags))) {
5621                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
5622                     ha->host_no, __func__);
5623                 return ret;
5624         }
5625
5626         do {
5627                 /* Checking to see if its returned to OS */
5628                 rp = (struct srb *) CMD_SP(cmd);
5629                 if (rp == NULL) {
5630                         done++;
5631                         break;
5632                 }
5633
5634                 msleep(2000);
5635         } while (max_wait_time--);
5636
5637         return done;
5638 }
5639
5640 /**
5641  * qla4xxx_wait_for_hba_online - waits for HBA to come online
5642  * @ha: Pointer to host adapter structure
5643  **/
5644 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
5645 {
5646         unsigned long wait_online;
5647
5648         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
5649         while (time_before(jiffies, wait_online)) {
5650
5651                 if (adapter_up(ha))
5652                         return QLA_SUCCESS;
5653
5654                 msleep(2000);
5655         }
5656
5657         return QLA_ERROR;
5658 }
5659
5660 /**
5661  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
5662  * @ha: pointer to HBA
5663  * @t: target id
5664  * @l: lun id
5665  *
5666  * This function waits for all outstanding commands to a lun to complete. It
5667  * returns 0 if all pending commands are returned and 1 otherwise.
5668  **/
5669 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
5670                                         struct scsi_target *stgt,
5671                                         struct scsi_device *sdev)
5672 {
5673         int cnt;
5674         int status = 0;
5675         struct scsi_cmnd *cmd;
5676
5677         /*
5678          * Waiting for all commands for the designated target or dev
5679          * in the active array
5680          */
5681         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
5682                 cmd = scsi_host_find_tag(ha->host, cnt);
5683                 if (cmd && stgt == scsi_target(cmd->device) &&
5684                     (!sdev || sdev == cmd->device)) {
5685                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5686                                 status++;
5687                                 break;
5688                         }
5689                 }
5690         }
5691         return status;
5692 }
5693
5694 /**
5695  * qla4xxx_eh_abort - callback for abort task.
5696  * @cmd: Pointer to Linux's SCSI command structure
5697  *
5698  * This routine is called by the Linux OS to abort the specified
5699  * command.
5700  **/
5701 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
5702 {
5703         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5704         unsigned int id = cmd->device->id;
5705         unsigned int lun = cmd->device->lun;
5706         unsigned long flags;
5707         struct srb *srb = NULL;
5708         int ret = SUCCESS;
5709         int wait = 0;
5710
5711         ql4_printk(KERN_INFO, ha,
5712             "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
5713             ha->host_no, id, lun, cmd);
5714
5715         spin_lock_irqsave(&ha->hardware_lock, flags);
5716         srb = (struct srb *) CMD_SP(cmd);
5717         if (!srb) {
5718                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5719                 return SUCCESS;
5720         }
5721         kref_get(&srb->srb_ref);
5722         spin_unlock_irqrestore(&ha->hardware_lock, flags);
5723
5724         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
5725                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
5726                     ha->host_no, id, lun));
5727                 ret = FAILED;
5728         } else {
5729                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
5730                     ha->host_no, id, lun));
5731                 wait = 1;
5732         }
5733
5734         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
5735
5736         /* Wait for command to complete */
5737         if (wait) {
5738                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5739                         DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
5740                             ha->host_no, id, lun));
5741                         ret = FAILED;
5742                 }
5743         }
5744
5745         ql4_printk(KERN_INFO, ha,
5746             "scsi%ld:%d:%d: Abort command - %s\n",
5747             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
5748
5749         return ret;
5750 }
5751
5752 /**
5753  * qla4xxx_eh_device_reset - callback for target reset.
5754  * @cmd: Pointer to Linux's SCSI command structure
5755  *
5756  * This routine is called by the Linux OS to reset all luns on the
5757  * specified target.
5758  **/
5759 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
5760 {
5761         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5762         struct ddb_entry *ddb_entry = cmd->device->hostdata;
5763         int ret = FAILED, stat;
5764
5765         if (!ddb_entry)
5766                 return ret;
5767
5768         ret = iscsi_block_scsi_eh(cmd);
5769         if (ret)
5770                 return ret;
5771         ret = FAILED;
5772
5773         ql4_printk(KERN_INFO, ha,
5774                    "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
5775                    cmd->device->channel, cmd->device->id, cmd->device->lun);
5776
5777         DEBUG2(printk(KERN_INFO
5778                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
5779                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
5780                       cmd, jiffies, cmd->request->timeout / HZ,
5781                       ha->dpc_flags, cmd->result, cmd->allowed));
5782
5783         /* FIXME: wait for hba to go online */
5784         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
5785         if (stat != QLA_SUCCESS) {
5786                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
5787                 goto eh_dev_reset_done;
5788         }
5789
5790         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5791                                          cmd->device)) {
5792                 ql4_printk(KERN_INFO, ha,
5793                            "DEVICE RESET FAILED - waiting for "
5794                            "commands.\n");
5795                 goto eh_dev_reset_done;
5796         }
5797
5798         /* Send marker. */
5799         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5800                 MM_LUN_RESET) != QLA_SUCCESS)
5801                 goto eh_dev_reset_done;
5802
5803         ql4_printk(KERN_INFO, ha,
5804                    "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
5805                    ha->host_no, cmd->device->channel, cmd->device->id,
5806                    cmd->device->lun);
5807
5808         ret = SUCCESS;
5809
5810 eh_dev_reset_done:
5811
5812         return ret;
5813 }
5814
5815 /**
5816  * qla4xxx_eh_target_reset - callback for target reset.
5817  * @cmd: Pointer to Linux's SCSI command structure
5818  *
5819  * This routine is called by the Linux OS to reset the target.
5820  **/
5821 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
5822 {
5823         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5824         struct ddb_entry *ddb_entry = cmd->device->hostdata;
5825         int stat, ret;
5826
5827         if (!ddb_entry)
5828                 return FAILED;
5829
5830         ret = iscsi_block_scsi_eh(cmd);
5831         if (ret)
5832                 return ret;
5833
5834         starget_printk(KERN_INFO, scsi_target(cmd->device),
5835                        "WARM TARGET RESET ISSUED.\n");
5836
5837         DEBUG2(printk(KERN_INFO
5838                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
5839                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
5840                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
5841                       ha->dpc_flags, cmd->result, cmd->allowed));
5842
5843         stat = qla4xxx_reset_target(ha, ddb_entry);
5844         if (stat != QLA_SUCCESS) {
5845                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5846                                "WARM TARGET RESET FAILED.\n");
5847                 return FAILED;
5848         }
5849
5850         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5851                                          NULL)) {
5852                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5853                                "WARM TARGET DEVICE RESET FAILED - "
5854                                "waiting for commands.\n");
5855                 return FAILED;
5856         }
5857
5858         /* Send marker. */
5859         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5860                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
5861                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5862                                "WARM TARGET DEVICE RESET FAILED - "
5863                                "marker iocb failed.\n");
5864                 return FAILED;
5865         }
5866
5867         starget_printk(KERN_INFO, scsi_target(cmd->device),
5868                        "WARM TARGET RESET SUCCEEDED.\n");
5869         return SUCCESS;
5870 }
5871
5872 /**
5873  * qla4xxx_is_eh_active - check if error handler is running
5874  * @shost: Pointer to SCSI Host struct
5875  *
5876  * This routine finds that if reset host is called in EH
5877  * scenario or from some application like sg_reset
5878  **/
5879 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
5880 {
5881         if (shost->shost_state == SHOST_RECOVERY)
5882                 return 1;
5883         return 0;
5884 }
5885
5886 /**
5887  * qla4xxx_eh_host_reset - kernel callback
5888  * @cmd: Pointer to Linux's SCSI command structure
5889  *
5890  * This routine is invoked by the Linux kernel to perform fatal error
5891  * recovery on the specified adapter.
5892  **/
5893 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
5894 {
5895         int return_status = FAILED;
5896         struct scsi_qla_host *ha;
5897
5898         ha = to_qla_host(cmd->device->host);
5899
5900         if (is_qla8032(ha) && ql4xdontresethba)
5901                 qla4_83xx_set_idc_dontreset(ha);
5902
5903         /*
5904          * For ISP8324, if IDC_CTRL DONTRESET_BIT0 is set by other
5905          * protocol drivers, we should not set device_state to
5906          * NEED_RESET
5907          */
5908         if (ql4xdontresethba ||
5909             (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
5910                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5911                      ha->host_no, __func__));
5912
5913                 /* Clear outstanding srb in queues */
5914                 if (qla4xxx_is_eh_active(cmd->device->host))
5915                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
5916
5917                 return FAILED;
5918         }
5919
5920         ql4_printk(KERN_INFO, ha,
5921                    "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
5922                    cmd->device->channel, cmd->device->id, cmd->device->lun);
5923
5924         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
5925                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
5926                               "DEAD.\n", ha->host_no, cmd->device->channel,
5927                               __func__));
5928
5929                 return FAILED;
5930         }
5931
5932         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
5933                 if (is_qla80XX(ha))
5934                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5935                 else
5936                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
5937         }
5938
5939         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
5940                 return_status = SUCCESS;
5941
5942         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
5943                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
5944
5945         return return_status;
5946 }
5947
5948 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
5949 {
5950         uint32_t mbox_cmd[MBOX_REG_COUNT];
5951         uint32_t mbox_sts[MBOX_REG_COUNT];
5952         struct addr_ctrl_blk_def *acb = NULL;
5953         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
5954         int rval = QLA_SUCCESS;
5955         dma_addr_t acb_dma;
5956
5957         acb = dma_alloc_coherent(&ha->pdev->dev,
5958                                  sizeof(struct addr_ctrl_blk_def),
5959                                  &acb_dma, GFP_KERNEL);
5960         if (!acb) {
5961                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
5962                            __func__);
5963                 rval = -ENOMEM;
5964                 goto exit_port_reset;
5965         }
5966
5967         memset(acb, 0, acb_len);
5968
5969         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
5970         if (rval != QLA_SUCCESS) {
5971                 rval = -EIO;
5972                 goto exit_free_acb;
5973         }
5974
5975         rval = qla4xxx_disable_acb(ha);
5976         if (rval != QLA_SUCCESS) {
5977                 rval = -EIO;
5978                 goto exit_free_acb;
5979         }
5980
5981         wait_for_completion_timeout(&ha->disable_acb_comp,
5982                                     DISABLE_ACB_TOV * HZ);
5983
5984         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
5985         if (rval != QLA_SUCCESS) {
5986                 rval = -EIO;
5987                 goto exit_free_acb;
5988         }
5989
5990 exit_free_acb:
5991         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
5992                           acb, acb_dma);
5993 exit_port_reset:
5994         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
5995                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
5996         return rval;
5997 }
5998
5999 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
6000 {
6001         struct scsi_qla_host *ha = to_qla_host(shost);
6002         int rval = QLA_SUCCESS;
6003
6004         if (ql4xdontresethba) {
6005                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
6006                                   __func__));
6007                 rval = -EPERM;
6008                 goto exit_host_reset;
6009         }
6010
6011         rval = qla4xxx_wait_for_hba_online(ha);
6012         if (rval != QLA_SUCCESS) {
6013                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unable to reset host "
6014                                   "adapter\n", __func__));
6015                 rval = -EIO;
6016                 goto exit_host_reset;
6017         }
6018
6019         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
6020                 goto recover_adapter;
6021
6022         switch (reset_type) {
6023         case SCSI_ADAPTER_RESET:
6024                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
6025                 break;
6026         case SCSI_FIRMWARE_RESET:
6027                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
6028                         if (is_qla80XX(ha))
6029                                 /* set firmware context reset */
6030                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
6031                                         &ha->dpc_flags);
6032                         else {
6033                                 rval = qla4xxx_context_reset(ha);
6034                                 goto exit_host_reset;
6035                         }
6036                 }
6037                 break;
6038         }
6039
6040 recover_adapter:
6041         rval = qla4xxx_recover_adapter(ha);
6042         if (rval != QLA_SUCCESS) {
6043                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
6044                                   __func__));
6045                 rval = -EIO;
6046         }
6047
6048 exit_host_reset:
6049         return rval;
6050 }
6051
6052 /* PCI AER driver recovers from all correctable errors w/o
6053  * driver intervention. For uncorrectable errors PCI AER
6054  * driver calls the following device driver's callbacks
6055  *
6056  * - Fatal Errors - link_reset
6057  * - Non-Fatal Errors - driver's pci_error_detected() which
6058  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
6059  *
6060  * PCI AER driver calls
6061  * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
6062  *               returns RECOVERED or NEED_RESET if fw_hung
6063  * NEED_RESET - driver's slot_reset()
6064  * DISCONNECT - device is dead & cannot recover
6065  * RECOVERED - driver's pci_resume()
6066  */
6067 static pci_ers_result_t
6068 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
6069 {
6070         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6071
6072         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
6073             ha->host_no, __func__, state);
6074
6075         if (!is_aer_supported(ha))
6076                 return PCI_ERS_RESULT_NONE;
6077
6078         switch (state) {
6079         case pci_channel_io_normal:
6080                 clear_bit(AF_EEH_BUSY, &ha->flags);
6081                 return PCI_ERS_RESULT_CAN_RECOVER;
6082         case pci_channel_io_frozen:
6083                 set_bit(AF_EEH_BUSY, &ha->flags);
6084                 qla4xxx_mailbox_premature_completion(ha);
6085                 qla4xxx_free_irqs(ha);
6086                 pci_disable_device(pdev);
6087                 /* Return back all IOs */
6088                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
6089                 return PCI_ERS_RESULT_NEED_RESET;
6090         case pci_channel_io_perm_failure:
6091                 set_bit(AF_EEH_BUSY, &ha->flags);
6092                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
6093                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
6094                 return PCI_ERS_RESULT_DISCONNECT;
6095         }
6096         return PCI_ERS_RESULT_NEED_RESET;
6097 }
6098
6099 /**
6100  * qla4xxx_pci_mmio_enabled() gets called if
6101  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
6102  * and read/write to the device still works.
6103  **/
6104 static pci_ers_result_t
6105 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
6106 {
6107         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6108
6109         if (!is_aer_supported(ha))
6110                 return PCI_ERS_RESULT_NONE;
6111
6112         return PCI_ERS_RESULT_RECOVERED;
6113 }
6114
6115 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
6116 {
6117         uint32_t rval = QLA_ERROR;
6118         uint32_t ret = 0;
6119         int fn;
6120         struct pci_dev *other_pdev = NULL;
6121
6122         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
6123
6124         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
6125
6126         if (test_bit(AF_ONLINE, &ha->flags)) {
6127                 clear_bit(AF_ONLINE, &ha->flags);
6128                 clear_bit(AF_LINK_UP, &ha->flags);
6129                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
6130                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
6131         }
6132
6133         fn = PCI_FUNC(ha->pdev->devfn);
6134         while (fn > 0) {
6135                 fn--;
6136                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
6137                     "func %x\n", ha->host_no, __func__, fn);
6138                 /* Get the pci device given the domain, bus,
6139                  * slot/function number */
6140                 other_pdev =
6141                     pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
6142                     ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
6143                     fn));
6144
6145                 if (!other_pdev)
6146                         continue;
6147
6148                 if (atomic_read(&other_pdev->enable_cnt)) {
6149                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
6150                             "func in enabled state%x\n", ha->host_no,
6151                             __func__, fn);
6152                         pci_dev_put(other_pdev);
6153                         break;
6154                 }
6155                 pci_dev_put(other_pdev);
6156         }
6157
6158         /* The first function on the card, the reset owner will
6159          * start & initialize the firmware. The other functions
6160          * on the card will reset the firmware context
6161          */
6162         if (!fn) {
6163                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
6164                     "0x%x is the owner\n", ha->host_no, __func__,
6165                     ha->pdev->devfn);
6166
6167                 ha->isp_ops->idc_lock(ha);
6168                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6169                                     QLA8XXX_DEV_COLD);
6170                 ha->isp_ops->idc_unlock(ha);
6171
6172                 rval = qla4_8xxx_update_idc_reg(ha);
6173                 if (rval == QLA_ERROR) {
6174                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
6175                                    ha->host_no, __func__);
6176                         ha->isp_ops->idc_lock(ha);
6177                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6178                                             QLA8XXX_DEV_FAILED);
6179                         ha->isp_ops->idc_unlock(ha);
6180                         goto exit_error_recovery;
6181                 }
6182
6183                 clear_bit(AF_FW_RECOVERY, &ha->flags);
6184                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
6185
6186                 if (rval != QLA_SUCCESS) {
6187                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
6188                             "FAILED\n", ha->host_no, __func__);
6189                         ha->isp_ops->idc_lock(ha);
6190                         qla4_8xxx_clear_drv_active(ha);
6191                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6192                                             QLA8XXX_DEV_FAILED);
6193                         ha->isp_ops->idc_unlock(ha);
6194                 } else {
6195                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
6196                             "READY\n", ha->host_no, __func__);
6197                         ha->isp_ops->idc_lock(ha);
6198                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6199                                             QLA8XXX_DEV_READY);
6200                         /* Clear driver state register */
6201                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
6202                         qla4_8xxx_set_drv_active(ha);
6203                         ha->isp_ops->idc_unlock(ha);
6204                         ret = qla4xxx_request_irqs(ha);
6205                         if (ret) {
6206                                 ql4_printk(KERN_WARNING, ha, "Failed to "
6207                                     "reserve interrupt %d already in use.\n",
6208                                     ha->pdev->irq);
6209                                 rval = QLA_ERROR;
6210                         } else {
6211                                 ha->isp_ops->enable_intrs(ha);
6212                                 rval = QLA_SUCCESS;
6213                         }
6214                 }
6215         } else {
6216                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
6217                     "the reset owner\n", ha->host_no, __func__,
6218                     ha->pdev->devfn);
6219                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
6220                      QLA8XXX_DEV_READY)) {
6221                         clear_bit(AF_FW_RECOVERY, &ha->flags);
6222                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
6223                         if (rval == QLA_SUCCESS) {
6224                                 ret = qla4xxx_request_irqs(ha);
6225                                 if (ret) {
6226                                         ql4_printk(KERN_WARNING, ha, "Failed to"
6227                                             " reserve interrupt %d already in"
6228                                             " use.\n", ha->pdev->irq);
6229                                         rval = QLA_ERROR;
6230                                 } else {
6231                                         ha->isp_ops->enable_intrs(ha);
6232                                         rval = QLA_SUCCESS;
6233                                 }
6234                         }
6235                         ha->isp_ops->idc_lock(ha);
6236                         qla4_8xxx_set_drv_active(ha);
6237                         ha->isp_ops->idc_unlock(ha);
6238                 }
6239         }
6240 exit_error_recovery:
6241         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
6242         return rval;
6243 }
6244
6245 static pci_ers_result_t
6246 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
6247 {
6248         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
6249         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6250         int rc;
6251
6252         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
6253             ha->host_no, __func__);
6254
6255         if (!is_aer_supported(ha))
6256                 return PCI_ERS_RESULT_NONE;
6257
6258         /* Restore the saved state of PCIe device -
6259          * BAR registers, PCI Config space, PCIX, MSI,
6260          * IOV states
6261          */
6262         pci_restore_state(pdev);
6263
6264         /* pci_restore_state() clears the saved_state flag of the device
6265          * save restored state which resets saved_state flag
6266          */
6267         pci_save_state(pdev);
6268
6269         /* Initialize device or resume if in suspended state */
6270         rc = pci_enable_device(pdev);
6271         if (rc) {
6272                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
6273                     "device after reset\n", ha->host_no, __func__);
6274                 goto exit_slot_reset;
6275         }
6276
6277         ha->isp_ops->disable_intrs(ha);
6278
6279         if (is_qla80XX(ha)) {
6280                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
6281                         ret = PCI_ERS_RESULT_RECOVERED;
6282                         goto exit_slot_reset;
6283                 } else
6284                         goto exit_slot_reset;
6285         }
6286
6287 exit_slot_reset:
6288         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
6289             "device after reset\n", ha->host_no, __func__, ret);
6290         return ret;
6291 }
6292
6293 static void
6294 qla4xxx_pci_resume(struct pci_dev *pdev)
6295 {
6296         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6297         int ret;
6298
6299         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
6300             ha->host_no, __func__);
6301
6302         ret = qla4xxx_wait_for_hba_online(ha);
6303         if (ret != QLA_SUCCESS) {
6304                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
6305                     "resume I/O from slot/link_reset\n", ha->host_no,
6306                      __func__);
6307         }
6308
6309         pci_cleanup_aer_uncorrect_error_status(pdev);
6310         clear_bit(AF_EEH_BUSY, &ha->flags);
6311 }
6312
6313 static const struct pci_error_handlers qla4xxx_err_handler = {
6314         .error_detected = qla4xxx_pci_error_detected,
6315         .mmio_enabled = qla4xxx_pci_mmio_enabled,
6316         .slot_reset = qla4xxx_pci_slot_reset,
6317         .resume = qla4xxx_pci_resume,
6318 };
6319
6320 static struct pci_device_id qla4xxx_pci_tbl[] = {
6321         {
6322                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6323                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
6324                 .subvendor      = PCI_ANY_ID,
6325                 .subdevice      = PCI_ANY_ID,
6326         },
6327         {
6328                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6329                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
6330                 .subvendor      = PCI_ANY_ID,
6331                 .subdevice      = PCI_ANY_ID,
6332         },
6333         {
6334                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6335                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
6336                 .subvendor      = PCI_ANY_ID,
6337                 .subdevice      = PCI_ANY_ID,
6338         },
6339         {
6340                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6341                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
6342                 .subvendor      = PCI_ANY_ID,
6343                 .subdevice      = PCI_ANY_ID,
6344         },
6345         {
6346                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6347                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
6348                 .subvendor      = PCI_ANY_ID,
6349                 .subdevice      = PCI_ANY_ID,
6350         },
6351         {0, 0},
6352 };
6353 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
6354
6355 static struct pci_driver qla4xxx_pci_driver = {
6356         .name           = DRIVER_NAME,
6357         .id_table       = qla4xxx_pci_tbl,
6358         .probe          = qla4xxx_probe_adapter,
6359         .remove         = qla4xxx_remove_adapter,
6360         .err_handler = &qla4xxx_err_handler,
6361 };
6362
6363 static int __init qla4xxx_module_init(void)
6364 {
6365         int ret;
6366
6367         /* Allocate cache for SRBs. */
6368         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
6369                                        SLAB_HWCACHE_ALIGN, NULL);
6370         if (srb_cachep == NULL) {
6371                 printk(KERN_ERR
6372                        "%s: Unable to allocate SRB cache..."
6373                        "Failing load!\n", DRIVER_NAME);
6374                 ret = -ENOMEM;
6375                 goto no_srp_cache;
6376         }
6377
6378         /* Derive version string. */
6379         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
6380         if (ql4xextended_error_logging)
6381                 strcat(qla4xxx_version_str, "-debug");
6382
6383         qla4xxx_scsi_transport =
6384                 iscsi_register_transport(&qla4xxx_iscsi_transport);
6385         if (!qla4xxx_scsi_transport){
6386                 ret = -ENODEV;
6387                 goto release_srb_cache;
6388         }
6389
6390         ret = pci_register_driver(&qla4xxx_pci_driver);
6391         if (ret)
6392                 goto unregister_transport;
6393
6394         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
6395         return 0;
6396
6397 unregister_transport:
6398         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
6399 release_srb_cache:
6400         kmem_cache_destroy(srb_cachep);
6401 no_srp_cache:
6402         return ret;
6403 }
6404
6405 static void __exit qla4xxx_module_exit(void)
6406 {
6407         pci_unregister_driver(&qla4xxx_pci_driver);
6408         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
6409         kmem_cache_destroy(srb_cachep);
6410 }
6411
6412 module_init(qla4xxx_module_init);
6413 module_exit(qla4xxx_module_exit);
6414
6415 MODULE_AUTHOR("QLogic Corporation");
6416 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
6417 MODULE_LICENSE("GPL");
6418 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);