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 /*
 170  * iSCSI Flash DDB sysfs entry points
 171  */
 172 static int
 173 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
 174                             struct iscsi_bus_flash_conn *fnode_conn,
 175                             void *data, int len);
 176 static int
 177 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 178                             int param, char *buf);
 179 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 180                                  int len);
 181 static int
 182 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
 183 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
 184                                    struct iscsi_bus_flash_conn *fnode_conn);
 185 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 186                                     struct iscsi_bus_flash_conn *fnode_conn);
 187 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 188
 189 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 190     QLA82XX_LEGACY_INTR_CONFIG;
 191
 192 static struct scsi_host_template qla4xxx_driver_template = {
 193         .module                 = THIS_MODULE,
 194         .name                   = DRIVER_NAME,
 195         .proc_name              = DRIVER_NAME,
 196         .queuecommand           = qla4xxx_queuecommand,
 197
 198         .eh_abort_handler       = qla4xxx_eh_abort,
 199         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 200         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 201         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 202         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 203
 204         .slave_configure        = qla4xxx_slave_configure,
 205         .slave_alloc            = qla4xxx_slave_alloc,
 206         .slave_destroy          = qla4xxx_slave_destroy,
 207         .change_queue_depth     = qla4xxx_change_queue_depth,
 208
 209         .this_id                = -1,
 210         .cmd_per_lun            = 3,
 211         .use_clustering         = ENABLE_CLUSTERING,
 212         .sg_tablesize           = SG_ALL,
 213
 214         .max_sectors            = 0xFFFF,
 215         .shost_attrs            = qla4xxx_host_attrs,
 216         .host_reset             = qla4xxx_host_reset,
 217         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 218 };
 219
 220 static struct iscsi_transport qla4xxx_iscsi_transport = {
 221         .owner                  = THIS_MODULE,
 222         .name                   = DRIVER_NAME,
 223         .caps                   = CAP_TEXT_NEGO |
 224                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 225                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 226                                   CAP_MULTI_R2T,
 227         .attr_is_visible        = qla4_attr_is_visible,
 228         .create_session         = qla4xxx_session_create,
 229         .destroy_session        = qla4xxx_session_destroy,
 230         .start_conn             = qla4xxx_conn_start,
 231         .create_conn            = qla4xxx_conn_create,
 232         .bind_conn              = qla4xxx_conn_bind,
 233         .stop_conn              = iscsi_conn_stop,
 234         .destroy_conn           = qla4xxx_conn_destroy,
 235         .set_param              = iscsi_set_param,
 236         .get_conn_param         = qla4xxx_conn_get_param,
 237         .get_session_param      = qla4xxx_session_get_param,
 238         .get_ep_param           = qla4xxx_get_ep_param,
 239         .ep_connect             = qla4xxx_ep_connect,
 240         .ep_poll                = qla4xxx_ep_poll,
 241         .ep_disconnect          = qla4xxx_ep_disconnect,
 242         .get_stats              = qla4xxx_conn_get_stats,
 243         .send_pdu               = iscsi_conn_send_pdu,
 244         .xmit_task              = qla4xxx_task_xmit,
 245         .cleanup_task           = qla4xxx_task_cleanup,
 246         .alloc_pdu              = qla4xxx_alloc_pdu,
 247
 248         .get_host_param         = qla4xxx_host_get_param,
 249         .set_iface_param        = qla4xxx_iface_set_param,
 250         .get_iface_param        = qla4xxx_get_iface_param,
 251         .bsg_request            = qla4xxx_bsg_request,
 252         .send_ping              = qla4xxx_send_ping,
 253         .get_chap               = qla4xxx_get_chap_list,
 254         .delete_chap            = qla4xxx_delete_chap,
 255         .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
 256         .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
 257         .new_flashnode          = qla4xxx_sysfs_ddb_add,
 258         .del_flashnode          = qla4xxx_sysfs_ddb_delete,
 259         .login_flashnode        = qla4xxx_sysfs_ddb_login,
 260         .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
 261         .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
 262 };
 263
 264 static struct scsi_transport_template *qla4xxx_scsi_transport;
 265
 266 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 267                              uint32_t iface_type, uint32_t payload_size,
 268                              uint32_t pid, struct sockaddr *dst_addr)
 269 {
 270         struct scsi_qla_host *ha = to_qla_host(shost);
 271         struct sockaddr_in *addr;
 272         struct sockaddr_in6 *addr6;
 273         uint32_t options = 0;
 274         uint8_t ipaddr[IPv6_ADDR_LEN];
 275         int rval;
 276
 277         memset(ipaddr, 0, IPv6_ADDR_LEN);
 278         /* IPv4 to IPv4 */
 279         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 280             (dst_addr->sa_family == AF_INET)) {
 281                 addr = (struct sockaddr_in *)dst_addr;
 282                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 283                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 284                                   "dest: %pI4\n", __func__,
 285                                   &ha->ip_config.ip_address, ipaddr));
 286                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 287                                          ipaddr);
 288                 if (rval)
 289                         rval = -EINVAL;
 290         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 291                    (dst_addr->sa_family == AF_INET6)) {
 292                 /* IPv6 to IPv6 */
 293                 addr6 = (struct sockaddr_in6 *)dst_addr;
 294                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 295
 296                 options |= PING_IPV6_PROTOCOL_ENABLE;
 297
 298                 /* Ping using LinkLocal address */
 299                 if ((iface_num == 0) || (iface_num == 1)) {
 300                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 301                                           "src: %pI6 dest: %pI6\n", __func__,
 302                                           &ha->ip_config.ipv6_link_local_addr,
 303                                           ipaddr));
 304                         options |= PING_IPV6_LINKLOCAL_ADDR;
 305                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 306                                                  pid, ipaddr);
 307                 } else {
 308                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 309                                    "not supported\n", __func__, iface_num);
 310                         rval = -ENOSYS;
 311                         goto exit_send_ping;
 312                 }
 313
 314                 /*
 315                  * If ping using LinkLocal address fails, try ping using
 316                  * IPv6 address
 317                  */
 318                 if (rval != QLA_SUCCESS) {
 319                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 320                         if (iface_num == 0) {
 321                                 options |= PING_IPV6_ADDR0;
 322                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 323                                                   "Ping src: %pI6 "
 324                                                   "dest: %pI6\n", __func__,
 325                                                   &ha->ip_config.ipv6_addr0,
 326                                                   ipaddr));
 327                         } else if (iface_num == 1) {
 328                                 options |= PING_IPV6_ADDR1;
 329                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 330                                                   "Ping src: %pI6 "
 331                                                   "dest: %pI6\n", __func__,
 332                                                   &ha->ip_config.ipv6_addr1,
 333                                                   ipaddr));
 334                         }
 335                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 336                                                  pid, ipaddr);
 337                         if (rval)
 338                                 rval = -EINVAL;
 339                 }
 340         } else
 341                 rval = -ENOSYS;
 342 exit_send_ping:
 343         return rval;
 344 }
 345
 346 static umode_t qla4_attr_is_visible(int param_type, int param)
 347 {
 348         switch (param_type) {
 349         case ISCSI_HOST_PARAM:
 350                 switch (param) {
 351                 case ISCSI_HOST_PARAM_HWADDRESS:
 352                 case ISCSI_HOST_PARAM_IPADDRESS:
 353                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 354                 case ISCSI_HOST_PARAM_PORT_STATE:
 355                 case ISCSI_HOST_PARAM_PORT_SPEED:
 356                         return S_IRUGO;
 357                 default:
 358                         return 0;
 359                 }
 360         case ISCSI_PARAM:
 361                 switch (param) {
 362                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 363                 case ISCSI_PARAM_PERSISTENT_PORT:
 364                 case ISCSI_PARAM_CONN_ADDRESS:
 365                 case ISCSI_PARAM_CONN_PORT:
 366                 case ISCSI_PARAM_TARGET_NAME:
 367                 case ISCSI_PARAM_TPGT:
 368                 case ISCSI_PARAM_TARGET_ALIAS:
 369                 case ISCSI_PARAM_MAX_BURST:
 370                 case ISCSI_PARAM_MAX_R2T:
 371                 case ISCSI_PARAM_FIRST_BURST:
 372                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 373                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 374                 case ISCSI_PARAM_IFACE_NAME:
 375                 case ISCSI_PARAM_CHAP_OUT_IDX:
 376                 case ISCSI_PARAM_CHAP_IN_IDX:
 377                 case ISCSI_PARAM_USERNAME:
 378                 case ISCSI_PARAM_PASSWORD:
 379                 case ISCSI_PARAM_USERNAME_IN:
 380                 case ISCSI_PARAM_PASSWORD_IN:
 381                 case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
 382                 case ISCSI_PARAM_DISCOVERY_SESS:
 383                 case ISCSI_PARAM_PORTAL_TYPE:
 384                 case ISCSI_PARAM_CHAP_AUTH_EN:
 385                 case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
 386                 case ISCSI_PARAM_BIDI_CHAP_EN:
 387                 case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
 388                 case ISCSI_PARAM_DEF_TIME2WAIT:
 389                 case ISCSI_PARAM_DEF_TIME2RETAIN:
 390                 case ISCSI_PARAM_HDRDGST_EN:
 391                 case ISCSI_PARAM_DATADGST_EN:
 392                 case ISCSI_PARAM_INITIAL_R2T_EN:
 393                 case ISCSI_PARAM_IMM_DATA_EN:
 394                 case ISCSI_PARAM_PDU_INORDER_EN:
 395                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
 396                 case ISCSI_PARAM_MAX_SEGMENT_SIZE:
 397                 case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
 398                 case ISCSI_PARAM_TCP_WSF_DISABLE:
 399                 case ISCSI_PARAM_TCP_NAGLE_DISABLE:
 400                 case ISCSI_PARAM_TCP_TIMER_SCALE:
 401                 case ISCSI_PARAM_TCP_TIMESTAMP_EN:
 402                 case ISCSI_PARAM_TCP_XMIT_WSF:
 403                 case ISCSI_PARAM_TCP_RECV_WSF:
 404                 case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
 405                 case ISCSI_PARAM_IPV4_TOS:
 406                 case ISCSI_PARAM_IPV6_TC:
 407                 case ISCSI_PARAM_IPV6_FLOW_LABEL:
 408                 case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
 409                 case ISCSI_PARAM_KEEPALIVE_TMO:
 410                 case ISCSI_PARAM_LOCAL_PORT:
 411                 case ISCSI_PARAM_ISID:
 412                 case ISCSI_PARAM_TSID:
 413                 case ISCSI_PARAM_DEF_TASKMGMT_TMO:
 414                 case ISCSI_PARAM_ERL:
 415                 case ISCSI_PARAM_STATSN:
 416                 case ISCSI_PARAM_EXP_STATSN:
 417                 case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
 418                 case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
 419                         return S_IRUGO;
 420                 default:
 421                         return 0;
 422                 }
 423         case ISCSI_NET_PARAM:
 424                 switch (param) {
 425                 case ISCSI_NET_PARAM_IPV4_ADDR:
 426                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 427                 case ISCSI_NET_PARAM_IPV4_GW:
 428                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 429                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 430                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 431                 case ISCSI_NET_PARAM_IPV6_ADDR:
 432                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 433                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 434                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 435                 case ISCSI_NET_PARAM_VLAN_ID:
 436                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 437                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 438                 case ISCSI_NET_PARAM_MTU:
 439                 case ISCSI_NET_PARAM_PORT:
 440                         return S_IRUGO;
 441                 default:
 442                         return 0;
 443                 }
 444         case ISCSI_FLASHNODE_PARAM:
 445                 switch (param) {
 446                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
 447                 case ISCSI_FLASHNODE_PORTAL_TYPE:
 448                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
 449                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
 450                 case ISCSI_FLASHNODE_ENTRY_EN:
 451                 case ISCSI_FLASHNODE_HDR_DGST_EN:
 452                 case ISCSI_FLASHNODE_DATA_DGST_EN:
 453                 case ISCSI_FLASHNODE_IMM_DATA_EN:
 454                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
 455                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
 456                 case ISCSI_FLASHNODE_PDU_INORDER:
 457                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
 458                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
 459                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
 460                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
 461                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
 462                 case ISCSI_FLASHNODE_ERL:
 463                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
 464                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
 465                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
 466                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
 467                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
 468                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
 469                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
 470                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
 471                 case ISCSI_FLASHNODE_FIRST_BURST:
 472                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
 473                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
 474                 case ISCSI_FLASHNODE_MAX_R2T:
 475                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
 476                 case ISCSI_FLASHNODE_ISID:
 477                 case ISCSI_FLASHNODE_TSID:
 478                 case ISCSI_FLASHNODE_PORT:
 479                 case ISCSI_FLASHNODE_MAX_BURST:
 480                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
 481                 case ISCSI_FLASHNODE_IPADDR:
 482                 case ISCSI_FLASHNODE_ALIAS:
 483                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
 484                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
 485                 case ISCSI_FLASHNODE_LOCAL_PORT:
 486                 case ISCSI_FLASHNODE_IPV4_TOS:
 487                 case ISCSI_FLASHNODE_IPV6_TC:
 488                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
 489                 case ISCSI_FLASHNODE_NAME:
 490                 case ISCSI_FLASHNODE_TPGT:
 491                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
 492                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
 493                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
 494                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
 495                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
 496                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
 497                 case ISCSI_FLASHNODE_USERNAME:
 498                 case ISCSI_FLASHNODE_PASSWORD:
 499                 case ISCSI_FLASHNODE_STATSN:
 500                 case ISCSI_FLASHNODE_EXP_STATSN:
 501                 case ISCSI_FLASHNODE_IS_BOOT_TGT:
 502                         return S_IRUGO;
 503                 default:
 504                         return 0;
 505                 }
 506         }
 507
 508         return 0;
 509 }
 510
 511 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 512                                   uint32_t *num_entries, char *buf)
 513 {
 514         struct scsi_qla_host *ha = to_qla_host(shost);
 515         struct ql4_chap_table *chap_table;
 516         struct iscsi_chap_rec *chap_rec;
 517         int max_chap_entries = 0;
 518         int valid_chap_entries = 0;
 519         int ret = 0, i;
 520
 521         if (is_qla80XX(ha))
 522                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 523                                         sizeof(struct ql4_chap_table);
 524         else
 525                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 526
 527         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 528                         __func__, *num_entries, chap_tbl_idx);
 529
 530         if (!buf) {
 531                 ret = -ENOMEM;
 532                 goto exit_get_chap_list;
 533         }
 534
 535         chap_rec = (struct iscsi_chap_rec *) buf;
 536         mutex_lock(&ha->chap_sem);
 537         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 538                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 539                 if (chap_table->cookie !=
 540                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 541                         continue;
 542
 543                 chap_rec->chap_tbl_idx = i;
 544                 strncpy(chap_rec->username, chap_table->name,
 545                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 546                 strncpy(chap_rec->password, chap_table->secret,
 547                         QL4_CHAP_MAX_SECRET_LEN);
 548                 chap_rec->password_length = chap_table->secret_len;
 549
 550                 if (chap_table->flags & BIT_7) /* local */
 551                         chap_rec->chap_type = CHAP_TYPE_OUT;
 552
 553                 if (chap_table->flags & BIT_6) /* peer */
 554                         chap_rec->chap_type = CHAP_TYPE_IN;
 555
 556                 chap_rec++;
 557
 558                 valid_chap_entries++;
 559                 if (valid_chap_entries == *num_entries)
 560                         break;
 561                 else
 562                         continue;
 563         }
 564         mutex_unlock(&ha->chap_sem);
 565
 566 exit_get_chap_list:
 567         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 568                         __func__,  valid_chap_entries);
 569         *num_entries = valid_chap_entries;
 570         return ret;
 571 }
 572
 573 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 574 {
 575         int ret = 0;
 576         uint16_t *chap_tbl_idx = (uint16_t *) data;
 577         struct iscsi_cls_session *cls_session;
 578         struct iscsi_session *sess;
 579         struct ddb_entry *ddb_entry;
 580
 581         if (!iscsi_is_session_dev(dev))
 582                 goto exit_is_chap_active;
 583
 584         cls_session = iscsi_dev_to_session(dev);
 585         sess = cls_session->dd_data;
 586         ddb_entry = sess->dd_data;
 587
 588         if (iscsi_session_chkready(cls_session))
 589                 goto exit_is_chap_active;
 590
 591         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 592                 ret = 1;
 593
 594 exit_is_chap_active:
 595         return ret;
 596 }
 597
 598 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 599                                   uint16_t chap_tbl_idx)
 600 {
 601         int ret = 0;
 602
 603         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 604                                     __qla4xxx_is_chap_active);
 605
 606         return ret;
 607 }
 608
 609 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 610 {
 611         struct scsi_qla_host *ha = to_qla_host(shost);
 612         struct ql4_chap_table *chap_table;
 613         dma_addr_t chap_dma;
 614         int max_chap_entries = 0;
 615         uint32_t offset = 0;
 616         uint32_t chap_size;
 617         int ret = 0;
 618
 619         chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 620         if (chap_table == NULL)
 621                 return -ENOMEM;
 622
 623         memset(chap_table, 0, sizeof(struct ql4_chap_table));
 624
 625         if (is_qla80XX(ha))
 626                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 627                                    sizeof(struct ql4_chap_table);
 628         else
 629                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 630
 631         if (chap_tbl_idx > max_chap_entries) {
 632                 ret = -EINVAL;
 633                 goto exit_delete_chap;
 634         }
 635
 636         /* Check if chap index is in use.
 637          * If chap is in use don't delet chap entry */
 638         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 639         if (ret) {
 640                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 641                            "delete from flash\n", chap_tbl_idx);
 642                 ret = -EBUSY;
 643                 goto exit_delete_chap;
 644         }
 645
 646         chap_size = sizeof(struct ql4_chap_table);
 647         if (is_qla40XX(ha))
 648                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 649         else {
 650                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 651                 /* flt_chap_size is CHAP table size for both ports
 652                  * so divide it by 2 to calculate the offset for second port
 653                  */
 654                 if (ha->port_num == 1)
 655                         offset += (ha->hw.flt_chap_size / 2);
 656                 offset += (chap_tbl_idx * chap_size);
 657         }
 658
 659         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 660         if (ret != QLA_SUCCESS) {
 661                 ret = -EINVAL;
 662                 goto exit_delete_chap;
 663         }
 664
 665         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 666                           __le16_to_cpu(chap_table->cookie)));
 667
 668         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 669                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 670                 goto exit_delete_chap;
 671         }
 672
 673         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 674
 675         offset = FLASH_CHAP_OFFSET |
 676                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 677         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 678                                 FLASH_OPT_RMW_COMMIT);
 679         if (ret == QLA_SUCCESS && ha->chap_list) {
 680                 mutex_lock(&ha->chap_sem);
 681                 /* Update ha chap_list cache */
 682                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 683                         chap_table, sizeof(struct ql4_chap_table));
 684                 mutex_unlock(&ha->chap_sem);
 685         }
 686         if (ret != QLA_SUCCESS)
 687                 ret =  -EINVAL;
 688
 689 exit_delete_chap:
 690         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 691         return ret;
 692 }
 693
 694 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 695                                    enum iscsi_param_type param_type,
 696                                    int param, char *buf)
 697 {
 698         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 699         struct scsi_qla_host *ha = to_qla_host(shost);
 700         int len = -ENOSYS;
 701
 702         if (param_type != ISCSI_NET_PARAM)
 703                 return -ENOSYS;
 704
 705         switch (param) {
 706         case ISCSI_NET_PARAM_IPV4_ADDR:
 707                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
 708                 break;
 709         case ISCSI_NET_PARAM_IPV4_SUBNET:
 710                 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
 711                 break;
 712         case ISCSI_NET_PARAM_IPV4_GW:
 713                 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
 714                 break;
 715         case ISCSI_NET_PARAM_IFACE_ENABLE:
 716                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 717                         len = sprintf(buf, "%s\n",
 718                                       (ha->ip_config.ipv4_options &
 719                                        IPOPT_IPV4_PROTOCOL_ENABLE) ?
 720                                       "enabled" : "disabled");
 721                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 722                         len = sprintf(buf, "%s\n",
 723                                       (ha->ip_config.ipv6_options &
 724                                        IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
 725                                        "enabled" : "disabled");
 726                 break;
 727         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 728                 len = sprintf(buf, "%s\n",
 729                               (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
 730                               "dhcp" : "static");
 731                 break;
 732         case ISCSI_NET_PARAM_IPV6_ADDR:
 733                 if (iface->iface_num == 0)
 734                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
 735                 if (iface->iface_num == 1)
 736                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
 737                 break;
 738         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 739                 len = sprintf(buf, "%pI6\n",
 740                               &ha->ip_config.ipv6_link_local_addr);
 741                 break;
 742         case ISCSI_NET_PARAM_IPV6_ROUTER:
 743                 len = sprintf(buf, "%pI6\n",
 744                               &ha->ip_config.ipv6_default_router_addr);
 745                 break;
 746         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 747                 len = sprintf(buf, "%s\n",
 748                               (ha->ip_config.ipv6_addl_options &
 749                                IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
 750                                "nd" : "static");
 751                 break;
 752         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 753                 len = sprintf(buf, "%s\n",
 754                               (ha->ip_config.ipv6_addl_options &
 755                                IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
 756                                "auto" : "static");
 757                 break;
 758         case ISCSI_NET_PARAM_VLAN_ID:
 759                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 760                         len = sprintf(buf, "%d\n",
 761                                       (ha->ip_config.ipv4_vlan_tag &
 762                                        ISCSI_MAX_VLAN_ID));
 763                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 764                         len = sprintf(buf, "%d\n",
 765                                       (ha->ip_config.ipv6_vlan_tag &
 766                                        ISCSI_MAX_VLAN_ID));
 767                 break;
 768         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 769                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 770                         len = sprintf(buf, "%d\n",
 771                                       ((ha->ip_config.ipv4_vlan_tag >> 13) &
 772                                         ISCSI_MAX_VLAN_PRIORITY));
 773                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 774                         len = sprintf(buf, "%d\n",
 775                                       ((ha->ip_config.ipv6_vlan_tag >> 13) &
 776                                         ISCSI_MAX_VLAN_PRIORITY));
 777                 break;
 778         case ISCSI_NET_PARAM_VLAN_ENABLED:
 779                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 780                         len = sprintf(buf, "%s\n",
 781                                       (ha->ip_config.ipv4_options &
 782                                        IPOPT_VLAN_TAGGING_ENABLE) ?
 783                                        "enabled" : "disabled");
 784                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 785                         len = sprintf(buf, "%s\n",
 786                                       (ha->ip_config.ipv6_options &
 787                                        IPV6_OPT_VLAN_TAGGING_ENABLE) ?
 788                                        "enabled" : "disabled");
 789                 break;
 790         case ISCSI_NET_PARAM_MTU:
 791                 len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
 792                 break;
 793         case ISCSI_NET_PARAM_PORT:
 794                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 795                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
 796                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 797                         len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
 798                 break;
 799         default:
 800                 len = -ENOSYS;
 801         }
 802
 803         return len;
 804 }
 805
 806 static struct iscsi_endpoint *
 807 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
 808                    int non_blocking)
 809 {
 810         int ret;
 811         struct iscsi_endpoint *ep;
 812         struct qla_endpoint *qla_ep;
 813         struct scsi_qla_host *ha;
 814         struct sockaddr_in *addr;
 815         struct sockaddr_in6 *addr6;
 816
 817         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 818         if (!shost) {
 819                 ret = -ENXIO;
 820                 printk(KERN_ERR "%s: shost is NULL\n",
 821                        __func__);
 822                 return ERR_PTR(ret);
 823         }
 824
 825         ha = iscsi_host_priv(shost);
 826
 827         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
 828         if (!ep) {
 829                 ret = -ENOMEM;
 830                 return ERR_PTR(ret);
 831         }
 832
 833         qla_ep = ep->dd_data;
 834         memset(qla_ep, 0, sizeof(struct qla_endpoint));
 835         if (dst_addr->sa_family == AF_INET) {
 836                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
 837                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
 838                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
 839                                   (char *)&addr->sin_addr));
 840         } else if (dst_addr->sa_family == AF_INET6) {
 841                 memcpy(&qla_ep->dst_addr, dst_addr,
 842                        sizeof(struct sockaddr_in6));
 843                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
 844                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
 845                                   (char *)&addr6->sin6_addr));
 846         }
 847
 848         qla_ep->host = shost;
 849
 850         return ep;
 851 }
 852
 853 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
 854 {
 855         struct qla_endpoint *qla_ep;
 856         struct scsi_qla_host *ha;
 857         int ret = 0;
 858
 859         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 860         qla_ep = ep->dd_data;
 861         ha = to_qla_host(qla_ep->host);
 862
 863         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
 864                 ret = 1;
 865
 866         return ret;
 867 }
 868
 869 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
 870 {
 871         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 872         iscsi_destroy_endpoint(ep);
 873 }
 874
 875 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 876                                 enum iscsi_param param,
 877                                 char *buf)
 878 {
 879         struct qla_endpoint *qla_ep = ep->dd_data;
 880         struct sockaddr *dst_addr;
 881
 882         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 883
 884         switch (param) {
 885         case ISCSI_PARAM_CONN_PORT:
 886         case ISCSI_PARAM_CONN_ADDRESS:
 887                 if (!qla_ep)
 888                         return -ENOTCONN;
 889
 890                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
 891                 if (!dst_addr)
 892                         return -ENOTCONN;
 893
 894                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
 895                                                  &qla_ep->dst_addr, param, buf);
 896         default:
 897                 return -ENOSYS;
 898         }
 899 }
 900
 901 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 902                                    struct iscsi_stats *stats)
 903 {
 904         struct iscsi_session *sess;
 905         struct iscsi_cls_session *cls_sess;
 906         struct ddb_entry *ddb_entry;
 907         struct scsi_qla_host *ha;
 908         struct ql_iscsi_stats *ql_iscsi_stats;
 909         int stats_size;
 910         int ret;
 911         dma_addr_t iscsi_stats_dma;
 912
 913         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 914
 915         cls_sess = iscsi_conn_to_session(cls_conn);
 916         sess = cls_sess->dd_data;
 917         ddb_entry = sess->dd_data;
 918         ha = ddb_entry->ha;
 919
 920         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
 921         /* Allocate memory */
 922         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
 923                                             &iscsi_stats_dma, GFP_KERNEL);
 924         if (!ql_iscsi_stats) {
 925                 ql4_printk(KERN_ERR, ha,
 926                            "Unable to allocate memory for iscsi stats\n");
 927                 goto exit_get_stats;
 928         }
 929
 930         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
 931                                      iscsi_stats_dma);
 932         if (ret != QLA_SUCCESS) {
 933                 ql4_printk(KERN_ERR, ha,
 934                            "Unable to retrieve iscsi stats\n");
 935                 goto free_stats;
 936         }
 937
 938         /* octets */
 939         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
 940         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
 941         /* xmit pdus */
 942         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
 943         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
 944         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
 945         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
 946         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
 947         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
 948         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
 949         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
 950         /* recv pdus */
 951         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
 952         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
 953         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
 954         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
 955         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
 956         stats->logoutrsp_pdus =
 957                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
 958         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
 959         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
 960         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
 961
 962 free_stats:
 963         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
 964                           iscsi_stats_dma);
 965 exit_get_stats:
 966         return;
 967 }
 968
 969 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
 970 {
 971         struct iscsi_cls_session *session;
 972         struct iscsi_session *sess;
 973         unsigned long flags;
 974         enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
 975
 976         session = starget_to_session(scsi_target(sc->device));
 977         sess = session->dd_data;
 978
 979         spin_lock_irqsave(&session->lock, flags);
 980         if (session->state == ISCSI_SESSION_FAILED)
 981                 ret = BLK_EH_RESET_TIMER;
 982         spin_unlock_irqrestore(&session->lock, flags);
 983
 984         return ret;
 985 }
 986
 987 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
 988 {
 989         struct scsi_qla_host *ha = to_qla_host(shost);
 990         struct iscsi_cls_host *ihost = shost->shost_data;
 991         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
 992
 993         qla4xxx_get_firmware_state(ha);
 994
 995         switch (ha->addl_fw_state & 0x0F00) {
 996         case FW_ADDSTATE_LINK_SPEED_10MBPS:
 997                 speed = ISCSI_PORT_SPEED_10MBPS;
 998                 break;
 999         case FW_ADDSTATE_LINK_SPEED_100MBPS:
1000                 speed = ISCSI_PORT_SPEED_100MBPS;
1001                 break;
1002         case FW_ADDSTATE_LINK_SPEED_1GBPS:
1003                 speed = ISCSI_PORT_SPEED_1GBPS;
1004                 break;
1005         case FW_ADDSTATE_LINK_SPEED_10GBPS:
1006                 speed = ISCSI_PORT_SPEED_10GBPS;
1007                 break;
1008         }
1009         ihost->port_speed = speed;
1010 }
1011
1012 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1013 {
1014         struct scsi_qla_host *ha = to_qla_host(shost);
1015         struct iscsi_cls_host *ihost = shost->shost_data;
1016         uint32_t state = ISCSI_PORT_STATE_DOWN;
1017
1018         if (test_bit(AF_LINK_UP, &ha->flags))
1019                 state = ISCSI_PORT_STATE_UP;
1020
1021         ihost->port_state = state;
1022 }
1023
1024 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1025                                   enum iscsi_host_param param, char *buf)
1026 {
1027         struct scsi_qla_host *ha = to_qla_host(shost);
1028         int len;
1029
1030         switch (param) {
1031         case ISCSI_HOST_PARAM_HWADDRESS:
1032                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1033                 break;
1034         case ISCSI_HOST_PARAM_IPADDRESS:
1035                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1036                 break;
1037         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1038                 len = sprintf(buf, "%s\n", ha->name_string);
1039                 break;
1040         case ISCSI_HOST_PARAM_PORT_STATE:
1041                 qla4xxx_set_port_state(shost);
1042                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1043                 break;
1044         case ISCSI_HOST_PARAM_PORT_SPEED:
1045                 qla4xxx_set_port_speed(shost);
1046                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1047                 break;
1048         default:
1049                 return -ENOSYS;
1050         }
1051
1052         return len;
1053 }
1054
1055 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1056 {
1057         if (ha->iface_ipv4)
1058                 return;
1059
1060         /* IPv4 */
1061         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1062                                             &qla4xxx_iscsi_transport,
1063                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1064         if (!ha->iface_ipv4)
1065                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1066                            "iface0.\n");
1067 }
1068
1069 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1070 {
1071         if (!ha->iface_ipv6_0)
1072                 /* IPv6 iface-0 */
1073                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1074                                                       &qla4xxx_iscsi_transport,
1075                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1076                                                       0);
1077         if (!ha->iface_ipv6_0)
1078                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1079                            "iface0.\n");
1080
1081         if (!ha->iface_ipv6_1)
1082                 /* IPv6 iface-1 */
1083                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1084                                                       &qla4xxx_iscsi_transport,
1085                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1086                                                       0);
1087         if (!ha->iface_ipv6_1)
1088                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1089                            "iface1.\n");
1090 }
1091
1092 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1093 {
1094         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1095                 qla4xxx_create_ipv4_iface(ha);
1096
1097         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
1098                 qla4xxx_create_ipv6_iface(ha);
1099 }
1100
1101 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
1102 {
1103         if (ha->iface_ipv4) {
1104                 iscsi_destroy_iface(ha->iface_ipv4);
1105                 ha->iface_ipv4 = NULL;
1106         }
1107 }
1108
1109 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
1110 {
1111         if (ha->iface_ipv6_0) {
1112                 iscsi_destroy_iface(ha->iface_ipv6_0);
1113                 ha->iface_ipv6_0 = NULL;
1114         }
1115         if (ha->iface_ipv6_1) {
1116                 iscsi_destroy_iface(ha->iface_ipv6_1);
1117                 ha->iface_ipv6_1 = NULL;
1118         }
1119 }
1120
1121 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
1122 {
1123         qla4xxx_destroy_ipv4_iface(ha);
1124         qla4xxx_destroy_ipv6_iface(ha);
1125 }
1126
1127 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1128                              struct iscsi_iface_param_info *iface_param,
1129                              struct addr_ctrl_blk *init_fw_cb)
1130 {
1131         /*
1132          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1133          * iface_num 1 is valid only for IPv6 Addr.
1134          */
1135         switch (iface_param->param) {
1136         case ISCSI_NET_PARAM_IPV6_ADDR:
1137                 if (iface_param->iface_num & 0x1)
1138                         /* IPv6 Addr 1 */
1139                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
1140                                sizeof(init_fw_cb->ipv6_addr1));
1141                 else
1142                         /* IPv6 Addr 0 */
1143                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
1144                                sizeof(init_fw_cb->ipv6_addr0));
1145                 break;
1146         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1147                 if (iface_param->iface_num & 0x1)
1148                         break;
1149                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
1150                        sizeof(init_fw_cb->ipv6_if_id));
1151                 break;
1152         case ISCSI_NET_PARAM_IPV6_ROUTER:
1153                 if (iface_param->iface_num & 0x1)
1154                         break;
1155                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
1156                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1157                 break;
1158         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1159                 /* Autocfg applies to even interface */
1160                 if (iface_param->iface_num & 0x1)
1161                         break;
1162
1163                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
1164                         init_fw_cb->ipv6_addtl_opts &=
1165                                 cpu_to_le16(
1166                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1167                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
1168                         init_fw_cb->ipv6_addtl_opts |=
1169                                 cpu_to_le16(
1170                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1171                 else
1172                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1173                                    "IPv6 addr\n");
1174                 break;
1175         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1176                 /* Autocfg applies to even interface */
1177                 if (iface_param->iface_num & 0x1)
1178                         break;
1179
1180                 if (iface_param->value[0] ==
1181                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
1182                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
1183                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1184                 else if (iface_param->value[0] ==
1185                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
1186                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
1187                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1188                 else
1189                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1190                                    "IPv6 linklocal addr\n");
1191                 break;
1192         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
1193                 /* Autocfg applies to even interface */
1194                 if (iface_param->iface_num & 0x1)
1195                         break;
1196
1197                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
1198                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
1199                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1200                 break;
1201         case ISCSI_NET_PARAM_IFACE_ENABLE:
1202                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1203                         init_fw_cb->ipv6_opts |=
1204                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
1205                         qla4xxx_create_ipv6_iface(ha);
1206                 } else {
1207                         init_fw_cb->ipv6_opts &=
1208                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
1209                                             0xFFFF);
1210                         qla4xxx_destroy_ipv6_iface(ha);
1211                 }
1212                 break;
1213         case ISCSI_NET_PARAM_VLAN_TAG:
1214                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
1215                         break;
1216                 init_fw_cb->ipv6_vlan_tag =
1217                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1218                 break;
1219         case ISCSI_NET_PARAM_VLAN_ENABLED:
1220                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1221                         init_fw_cb->ipv6_opts |=
1222                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
1223                 else
1224                         init_fw_cb->ipv6_opts &=
1225                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
1226                 break;
1227         case ISCSI_NET_PARAM_MTU:
1228                 init_fw_cb->eth_mtu_size =
1229                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1230                 break;
1231         case ISCSI_NET_PARAM_PORT:
1232                 /* Autocfg applies to even interface */
1233                 if (iface_param->iface_num & 0x1)
1234                         break;
1235
1236                 init_fw_cb->ipv6_port =
1237                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1238                 break;
1239         default:
1240                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
1241                            iface_param->param);
1242                 break;
1243         }
1244 }
1245
1246 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
1247                              struct iscsi_iface_param_info *iface_param,
1248                              struct addr_ctrl_blk *init_fw_cb)
1249 {
1250         switch (iface_param->param) {
1251         case ISCSI_NET_PARAM_IPV4_ADDR:
1252                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
1253                        sizeof(init_fw_cb->ipv4_addr));
1254                 break;
1255         case ISCSI_NET_PARAM_IPV4_SUBNET:
1256                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
1257                        sizeof(init_fw_cb->ipv4_subnet));
1258                 break;
1259         case ISCSI_NET_PARAM_IPV4_GW:
1260                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
1261                        sizeof(init_fw_cb->ipv4_gw_addr));
1262                 break;
1263         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1264                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
1265                         init_fw_cb->ipv4_tcp_opts |=
1266                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
1267                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
1268                         init_fw_cb->ipv4_tcp_opts &=
1269                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
1270                 else
1271                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
1272                 break;
1273         case ISCSI_NET_PARAM_IFACE_ENABLE:
1274                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1275                         init_fw_cb->ipv4_ip_opts |=
1276                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
1277                         qla4xxx_create_ipv4_iface(ha);
1278                 } else {
1279                         init_fw_cb->ipv4_ip_opts &=
1280                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
1281                                             0xFFFF);
1282                         qla4xxx_destroy_ipv4_iface(ha);
1283                 }
1284                 break;
1285         case ISCSI_NET_PARAM_VLAN_TAG:
1286                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
1287                         break;
1288                 init_fw_cb->ipv4_vlan_tag =
1289                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1290                 break;
1291         case ISCSI_NET_PARAM_VLAN_ENABLED:
1292                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1293                         init_fw_cb->ipv4_ip_opts |=
1294                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
1295                 else
1296                         init_fw_cb->ipv4_ip_opts &=
1297                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
1298                 break;
1299         case ISCSI_NET_PARAM_MTU:
1300                 init_fw_cb->eth_mtu_size =
1301                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1302                 break;
1303         case ISCSI_NET_PARAM_PORT:
1304                 init_fw_cb->ipv4_port =
1305                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1306                 break;
1307         default:
1308                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
1309                            iface_param->param);
1310                 break;
1311         }
1312 }
1313
1314 static void
1315 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
1316 {
1317         struct addr_ctrl_blk_def *acb;
1318         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
1319         memset(acb->reserved1, 0, sizeof(acb->reserved1));
1320         memset(acb->reserved2, 0, sizeof(acb->reserved2));
1321         memset(acb->reserved3, 0, sizeof(acb->reserved3));
1322         memset(acb->reserved4, 0, sizeof(acb->reserved4));
1323         memset(acb->reserved5, 0, sizeof(acb->reserved5));
1324         memset(acb->reserved6, 0, sizeof(acb->reserved6));
1325         memset(acb->reserved7, 0, sizeof(acb->reserved7));
1326         memset(acb->reserved8, 0, sizeof(acb->reserved8));
1327         memset(acb->reserved9, 0, sizeof(acb->reserved9));
1328         memset(acb->reserved10, 0, sizeof(acb->reserved10));
1329         memset(acb->reserved11, 0, sizeof(acb->reserved11));
1330         memset(acb->reserved12, 0, sizeof(acb->reserved12));
1331         memset(acb->reserved13, 0, sizeof(acb->reserved13));
1332         memset(acb->reserved14, 0, sizeof(acb->reserved14));
1333         memset(acb->reserved15, 0, sizeof(acb->reserved15));
1334 }
1335
1336 static int
1337 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
1338 {
1339         struct scsi_qla_host *ha = to_qla_host(shost);
1340         int rval = 0;
1341         struct iscsi_iface_param_info *iface_param = NULL;
1342         struct addr_ctrl_blk *init_fw_cb = NULL;
1343         dma_addr_t init_fw_cb_dma;
1344         uint32_t mbox_cmd[MBOX_REG_COUNT];
1345         uint32_t mbox_sts[MBOX_REG_COUNT];
1346         uint32_t rem = len;
1347         struct nlattr *attr;
1348
1349         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
1350                                         sizeof(struct addr_ctrl_blk),
1351                                         &init_fw_cb_dma, GFP_KERNEL);
1352         if (!init_fw_cb) {
1353                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
1354                            __func__);
1355                 return -ENOMEM;
1356         }
1357
1358         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1359         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1360         memset(&mbox_sts, 0, sizeof(mbox_sts));
1361
1362         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
1363                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
1364                 rval = -EIO;
1365                 goto exit_init_fw_cb;
1366         }
1367
1368         nla_for_each_attr(attr, data, len, rem) {
1369                 iface_param = nla_data(attr);
1370
1371                 if (iface_param->param_type != ISCSI_NET_PARAM)
1372                         continue;
1373
1374                 switch (iface_param->iface_type) {
1375                 case ISCSI_IFACE_TYPE_IPV4:
1376                         switch (iface_param->iface_num) {
1377                         case 0:
1378                                 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
1379                                 break;
1380                         default:
1381                                 /* Cannot have more than one IPv4 interface */
1382                                 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
1383                                            "number = %d\n",
1384                                            iface_param->iface_num);
1385                                 break;
1386                         }
1387                         break;
1388                 case ISCSI_IFACE_TYPE_IPV6:
1389                         switch (iface_param->iface_num) {
1390                         case 0:
1391                         case 1:
1392                                 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
1393                                 break;
1394                         default:
1395                                 /* Cannot have more than two IPv6 interface */
1396                                 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
1397                                            "number = %d\n",
1398                                            iface_param->iface_num);
1399                                 break;
1400                         }
1401                         break;
1402                 default:
1403                         ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
1404                         break;
1405                 }
1406         }
1407
1408         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
1409
1410         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
1411                                  sizeof(struct addr_ctrl_blk),
1412                                  FLASH_OPT_RMW_COMMIT);
1413         if (rval != QLA_SUCCESS) {
1414                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
1415                            __func__);
1416                 rval = -EIO;
1417                 goto exit_init_fw_cb;
1418         }
1419
1420         rval = qla4xxx_disable_acb(ha);
1421         if (rval != QLA_SUCCESS) {
1422                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
1423                            __func__);
1424                 rval = -EIO;
1425                 goto exit_init_fw_cb;
1426         }
1427
1428         wait_for_completion_timeout(&ha->disable_acb_comp,
1429                                     DISABLE_ACB_TOV * HZ);
1430
1431         qla4xxx_initcb_to_acb(init_fw_cb);
1432
1433         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
1434         if (rval != QLA_SUCCESS) {
1435                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
1436                            __func__);
1437                 rval = -EIO;
1438                 goto exit_init_fw_cb;
1439         }
1440
1441         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1442         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
1443                                   init_fw_cb_dma);
1444
1445 exit_init_fw_cb:
1446         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
1447                           init_fw_cb, init_fw_cb_dma);
1448
1449         return rval;
1450 }
1451
1452 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
1453                                      enum iscsi_param param, char *buf)
1454 {
1455         struct iscsi_session *sess = cls_sess->dd_data;
1456         struct ddb_entry *ddb_entry = sess->dd_data;
1457         struct scsi_qla_host *ha = ddb_entry->ha;
1458         int rval, len;
1459         uint16_t idx;
1460
1461         switch (param) {
1462         case ISCSI_PARAM_CHAP_IN_IDX:
1463                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
1464                                               sess->password_in, BIDI_CHAP,
1465                                               &idx);
1466                 if (rval)
1467                         len = sprintf(buf, "\n");
1468                 else
1469                         len = sprintf(buf, "%hu\n", idx);
1470                 break;
1471         case ISCSI_PARAM_CHAP_OUT_IDX:
1472                 rval = qla4xxx_get_chap_index(ha, sess->username,
1473                                               sess->password, LOCAL_CHAP,
1474                                               &idx);
1475                 if (rval)
1476                         len = sprintf(buf, "\n");
1477                 else
1478                         len = sprintf(buf, "%hu\n", idx);
1479                 break;
1480         default:
1481                 return iscsi_session_get_param(cls_sess, param, buf);
1482         }
1483
1484         return len;
1485 }
1486
1487 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
1488                                   enum iscsi_param param, char *buf)
1489 {
1490         struct iscsi_conn *conn;
1491         struct qla_conn *qla_conn;
1492         struct sockaddr *dst_addr;
1493         int len = 0;
1494
1495         conn = cls_conn->dd_data;
1496         qla_conn = conn->dd_data;
1497         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
1498
1499         switch (param) {
1500         case ISCSI_PARAM_CONN_PORT:
1501         case ISCSI_PARAM_CONN_ADDRESS:
1502                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1503                                                  dst_addr, param, buf);
1504         default:
1505                 return iscsi_conn_get_param(cls_conn, param, buf);
1506         }
1507
1508         return len;
1509
1510 }
1511
1512 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
1513 {
1514         uint32_t mbx_sts = 0;
1515         uint16_t tmp_ddb_index;
1516         int ret;
1517
1518 get_ddb_index:
1519         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
1520
1521         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
1522                 DEBUG2(ql4_printk(KERN_INFO, ha,
1523                                   "Free DDB index not available\n"));
1524                 ret = QLA_ERROR;
1525                 goto exit_get_ddb_index;
1526         }
1527
1528         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1529                 goto get_ddb_index;
1530
1531         DEBUG2(ql4_printk(KERN_INFO, ha,
1532                           "Found a free DDB index at %d\n", tmp_ddb_index));
1533         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1534         if (ret == QLA_ERROR) {
1535                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1536                         ql4_printk(KERN_INFO, ha,
1537                                    "DDB index = %d not available trying next\n",
1538                                    tmp_ddb_index);
1539                         goto get_ddb_index;
1540                 }
1541                 DEBUG2(ql4_printk(KERN_INFO, ha,
1542                                   "Free FW DDB not available\n"));
1543         }
1544
1545         *ddb_index = tmp_ddb_index;
1546
1547 exit_get_ddb_index:
1548         return ret;
1549 }
1550
1551 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1552                                    struct ddb_entry *ddb_entry,
1553                                    char *existing_ipaddr,
1554                                    char *user_ipaddr)
1555 {
1556         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1557         char formatted_ipaddr[DDB_IPADDR_LEN];
1558         int status = QLA_SUCCESS, ret = 0;
1559
1560         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1561                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1562                                '\0', NULL);
1563                 if (ret == 0) {
1564                         status = QLA_ERROR;
1565                         goto out_match;
1566                 }
1567                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1568         } else {
1569                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1570                                '\0', NULL);
1571                 if (ret == 0) {
1572                         status = QLA_ERROR;
1573                         goto out_match;
1574                 }
1575                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1576         }
1577
1578         if (strcmp(existing_ipaddr, formatted_ipaddr))
1579                 status = QLA_ERROR;
1580
1581 out_match:
1582         return status;
1583 }
1584
1585 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1586                                       struct iscsi_cls_conn *cls_conn)
1587 {
1588         int idx = 0, max_ddbs, rval;
1589         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1590         struct iscsi_session *sess, *existing_sess;
1591         struct iscsi_conn *conn, *existing_conn;
1592         struct ddb_entry *ddb_entry;
1593
1594         sess = cls_sess->dd_data;
1595         conn = cls_conn->dd_data;
1596
1597         if (sess->targetname == NULL ||
1598             conn->persistent_address == NULL ||
1599             conn->persistent_port == 0)
1600                 return QLA_ERROR;
1601
1602         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1603                                      MAX_DEV_DB_ENTRIES;
1604
1605         for (idx = 0; idx < max_ddbs; idx++) {
1606                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1607                 if (ddb_entry == NULL)
1608                         continue;
1609
1610                 if (ddb_entry->ddb_type != FLASH_DDB)
1611                         continue;
1612
1613                 existing_sess = ddb_entry->sess->dd_data;
1614                 existing_conn = ddb_entry->conn->dd_data;
1615
1616                 if (existing_sess->targetname == NULL ||
1617                     existing_conn->persistent_address == NULL ||
1618                     existing_conn->persistent_port == 0)
1619                         continue;
1620
1621                 DEBUG2(ql4_printk(KERN_INFO, ha,
1622                                   "IQN = %s User IQN = %s\n",
1623                                   existing_sess->targetname,
1624                                   sess->targetname));
1625
1626                 DEBUG2(ql4_printk(KERN_INFO, ha,
1627                                   "IP = %s User IP = %s\n",
1628                                   existing_conn->persistent_address,
1629                                   conn->persistent_address));
1630
1631                 DEBUG2(ql4_printk(KERN_INFO, ha,
1632                                   "Port = %d User Port = %d\n",
1633                                   existing_conn->persistent_port,
1634                                   conn->persistent_port));
1635
1636                 if (strcmp(existing_sess->targetname, sess->targetname))
1637                         continue;
1638                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1639                                         existing_conn->persistent_address,
1640                                         conn->persistent_address);
1641                 if (rval == QLA_ERROR)
1642                         continue;
1643                 if (existing_conn->persistent_port != conn->persistent_port)
1644                         continue;
1645                 break;
1646         }
1647
1648         if (idx == max_ddbs)
1649                 return QLA_ERROR;
1650
1651         DEBUG2(ql4_printk(KERN_INFO, ha,
1652                           "Match found in fwdb sessions\n"));
1653         return QLA_SUCCESS;
1654 }
1655
1656 static struct iscsi_cls_session *
1657 qla4xxx_session_create(struct iscsi_endpoint *ep,
1658                         uint16_t cmds_max, uint16_t qdepth,
1659                         uint32_t initial_cmdsn)
1660 {
1661         struct iscsi_cls_session *cls_sess;
1662         struct scsi_qla_host *ha;
1663         struct qla_endpoint *qla_ep;
1664         struct ddb_entry *ddb_entry;
1665         uint16_t ddb_index;
1666         struct iscsi_session *sess;
1667         struct sockaddr *dst_addr;
1668         int ret;
1669
1670         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1671         if (!ep) {
1672                 printk(KERN_ERR "qla4xxx: missing ep.\n");
1673                 return NULL;
1674         }
1675
1676         qla_ep = ep->dd_data;
1677         dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1678         ha = to_qla_host(qla_ep->host);
1679
1680         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1681         if (ret == QLA_ERROR)
1682                 return NULL;
1683
1684         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1685                                        cmds_max, sizeof(struct ddb_entry),
1686                                        sizeof(struct ql4_task_data),
1687                                        initial_cmdsn, ddb_index);
1688         if (!cls_sess)
1689                 return NULL;
1690
1691         sess = cls_sess->dd_data;
1692         ddb_entry = sess->dd_data;
1693         ddb_entry->fw_ddb_index = ddb_index;
1694         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1695         ddb_entry->ha = ha;
1696         ddb_entry->sess = cls_sess;
1697         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1698         ddb_entry->ddb_change = qla4xxx_ddb_change;
1699         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1700         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1701         ha->tot_ddbs++;
1702
1703         return cls_sess;
1704 }
1705
1706 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1707 {
1708         struct iscsi_session *sess;
1709         struct ddb_entry *ddb_entry;
1710         struct scsi_qla_host *ha;
1711         unsigned long flags, wtime;
1712         struct dev_db_entry *fw_ddb_entry = NULL;
1713         dma_addr_t fw_ddb_entry_dma;
1714         uint32_t ddb_state;
1715         int ret;
1716
1717         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1718         sess = cls_sess->dd_data;
1719         ddb_entry = sess->dd_data;
1720         ha = ddb_entry->ha;
1721
1722         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1723                                           &fw_ddb_entry_dma, GFP_KERNEL);
1724         if (!fw_ddb_entry) {
1725                 ql4_printk(KERN_ERR, ha,
1726                            "%s: Unable to allocate dma buffer\n", __func__);
1727                 goto destroy_session;
1728         }
1729
1730         wtime = jiffies + (HZ * LOGOUT_TOV);
1731         do {
1732                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
1733                                               fw_ddb_entry, fw_ddb_entry_dma,
1734                                               NULL, NULL, &ddb_state, NULL,
1735                                               NULL, NULL);
1736                 if (ret == QLA_ERROR)
1737                         goto destroy_session;
1738
1739                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
1740                     (ddb_state == DDB_DS_SESSION_FAILED))
1741                         goto destroy_session;
1742
1743                 schedule_timeout_uninterruptible(HZ);
1744         } while ((time_after(wtime, jiffies)));
1745
1746 destroy_session:
1747         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1748
1749         spin_lock_irqsave(&ha->hardware_lock, flags);
1750         qla4xxx_free_ddb(ha, ddb_entry);
1751         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1752
1753         iscsi_session_teardown(cls_sess);
1754
1755         if (fw_ddb_entry)
1756                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1757                                   fw_ddb_entry, fw_ddb_entry_dma);
1758 }
1759
1760 static struct iscsi_cls_conn *
1761 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1762 {
1763         struct iscsi_cls_conn *cls_conn;
1764         struct iscsi_session *sess;
1765         struct ddb_entry *ddb_entry;
1766
1767         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1768         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
1769                                     conn_idx);
1770         if (!cls_conn)
1771                 return NULL;
1772
1773         sess = cls_sess->dd_data;
1774         ddb_entry = sess->dd_data;
1775         ddb_entry->conn = cls_conn;
1776
1777         return cls_conn;
1778 }
1779
1780 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
1781                              struct iscsi_cls_conn *cls_conn,
1782                              uint64_t transport_fd, int is_leading)
1783 {
1784         struct iscsi_conn *conn;
1785         struct qla_conn *qla_conn;
1786         struct iscsi_endpoint *ep;
1787
1788         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1789
1790         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1791                 return -EINVAL;
1792         ep = iscsi_lookup_endpoint(transport_fd);
1793         conn = cls_conn->dd_data;
1794         qla_conn = conn->dd_data;
1795         qla_conn->qla_ep = ep->dd_data;
1796         return 0;
1797 }
1798
1799 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
1800 {
1801         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1802         struct iscsi_session *sess;
1803         struct ddb_entry *ddb_entry;
1804         struct scsi_qla_host *ha;
1805         struct dev_db_entry *fw_ddb_entry = NULL;
1806         dma_addr_t fw_ddb_entry_dma;
1807         uint32_t mbx_sts = 0;
1808         int ret = 0;
1809         int status = QLA_SUCCESS;
1810
1811         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1812         sess = cls_sess->dd_data;
1813         ddb_entry = sess->dd_data;
1814         ha = ddb_entry->ha;
1815
1816         /* Check if we have  matching FW DDB, if yes then do not
1817          * login to this target. This could cause target to logout previous
1818          * connection
1819          */
1820         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
1821         if (ret == QLA_SUCCESS) {
1822                 ql4_printk(KERN_INFO, ha,
1823                            "Session already exist in FW.\n");
1824                 ret = -EEXIST;
1825                 goto exit_conn_start;
1826         }
1827
1828         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1829                                           &fw_ddb_entry_dma, GFP_KERNEL);
1830         if (!fw_ddb_entry) {
1831                 ql4_printk(KERN_ERR, ha,
1832                            "%s: Unable to allocate dma buffer\n", __func__);
1833                 ret = -ENOMEM;
1834                 goto exit_conn_start;
1835         }
1836
1837         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
1838         if (ret) {
1839                 /* If iscsid is stopped and started then no need to do
1840                 * set param again since ddb state will be already
1841                 * active and FW does not allow set ddb to an
1842                 * active session.
1843                 */
1844                 if (mbx_sts)
1845                         if (ddb_entry->fw_ddb_device_state ==
1846                                                 DDB_DS_SESSION_ACTIVE) {
1847                                 ddb_entry->unblock_sess(ddb_entry->sess);
1848                                 goto exit_set_param;
1849                         }
1850
1851                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
1852                            __func__, ddb_entry->fw_ddb_index);
1853                 goto exit_conn_start;
1854         }
1855
1856         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1857         if (status == QLA_ERROR) {
1858                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1859                            sess->targetname);
1860                 ret = -EINVAL;
1861                 goto exit_conn_start;
1862         }
1863
1864         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
1865                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1866
1867         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
1868                       ddb_entry->fw_ddb_device_state));
1869
1870 exit_set_param:
1871         ret = 0;
1872
1873 exit_conn_start:
1874         if (fw_ddb_entry)
1875                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1876                                   fw_ddb_entry, fw_ddb_entry_dma);
1877         return ret;
1878 }
1879
1880 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
1881 {
1882         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1883         struct iscsi_session *sess;
1884         struct scsi_qla_host *ha;
1885         struct ddb_entry *ddb_entry;
1886         int options;
1887
1888         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1889         sess = cls_sess->dd_data;
1890         ddb_entry = sess->dd_data;
1891         ha = ddb_entry->ha;
1892
1893         options = LOGOUT_OPTION_CLOSE_SESSION;
1894         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
1895                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
1896 }
1897
1898 static void qla4xxx_task_work(struct work_struct *wdata)
1899 {
1900         struct ql4_task_data *task_data;
1901         struct scsi_qla_host *ha;
1902         struct passthru_status *sts;
1903         struct iscsi_task *task;
1904         struct iscsi_hdr *hdr;
1905         uint8_t *data;
1906         uint32_t data_len;
1907         struct iscsi_conn *conn;
1908         int hdr_len;
1909         itt_t itt;
1910
1911         task_data = container_of(wdata, struct ql4_task_data, task_work);
1912         ha = task_data->ha;
1913         task = task_data->task;
1914         sts = &task_data->sts;
1915         hdr_len = sizeof(struct iscsi_hdr);
1916
1917         DEBUG3(printk(KERN_INFO "Status returned\n"));
1918         DEBUG3(qla4xxx_dump_buffer(sts, 64));
1919         DEBUG3(printk(KERN_INFO "Response buffer"));
1920         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
1921
1922         conn = task->conn;
1923
1924         switch (sts->completionStatus) {
1925         case PASSTHRU_STATUS_COMPLETE:
1926                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
1927                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
1928                 itt = sts->handle;
1929                 hdr->itt = itt;
1930                 data = task_data->resp_buffer + hdr_len;
1931                 data_len = task_data->resp_len - hdr_len;
1932                 iscsi_complete_pdu(conn, hdr, data, data_len);
1933                 break;
1934         default:
1935                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
1936                            sts->completionStatus);
1937                 break;
1938         }
1939         return;
1940 }
1941
1942 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
1943 {
1944         struct ql4_task_data *task_data;
1945         struct iscsi_session *sess;
1946         struct ddb_entry *ddb_entry;
1947         struct scsi_qla_host *ha;
1948         int hdr_len;
1949
1950         sess = task->conn->session;
1951         ddb_entry = sess->dd_data;
1952         ha = ddb_entry->ha;
1953         task_data = task->dd_data;
1954         memset(task_data, 0, sizeof(struct ql4_task_data));
1955
1956         if (task->sc) {
1957                 ql4_printk(KERN_INFO, ha,
1958                            "%s: SCSI Commands not implemented\n", __func__);
1959                 return -EINVAL;
1960         }
1961
1962         hdr_len = sizeof(struct iscsi_hdr);
1963         task_data->ha = ha;
1964         task_data->task = task;
1965
1966         if (task->data_count) {
1967                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
1968                                                      task->data_count,
1969                                                      PCI_DMA_TODEVICE);
1970         }
1971
1972         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1973                       __func__, task->conn->max_recv_dlength, hdr_len));
1974
1975         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
1976         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
1977                                                     task_data->resp_len,
1978                                                     &task_data->resp_dma,
1979                                                     GFP_ATOMIC);
1980         if (!task_data->resp_buffer)
1981                 goto exit_alloc_pdu;
1982
1983         task_data->req_len = task->data_count + hdr_len;
1984         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
1985                                                    task_data->req_len,
1986                                                    &task_data->req_dma,
1987                                                    GFP_ATOMIC);
1988         if (!task_data->req_buffer)
1989                 goto exit_alloc_pdu;
1990
1991         task->hdr = task_data->req_buffer;
1992
1993         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
1994
1995         return 0;
1996
1997 exit_alloc_pdu:
1998         if (task_data->resp_buffer)
1999                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
2000                                   task_data->resp_buffer, task_data->resp_dma);
2001
2002         if (task_data->req_buffer)
2003                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
2004                                   task_data->req_buffer, task_data->req_dma);
2005         return -ENOMEM;
2006 }
2007
2008 static void qla4xxx_task_cleanup(struct iscsi_task *task)
2009 {
2010         struct ql4_task_data *task_data;
2011         struct iscsi_session *sess;
2012         struct ddb_entry *ddb_entry;
2013         struct scsi_qla_host *ha;
2014         int hdr_len;
2015
2016         hdr_len = sizeof(struct iscsi_hdr);
2017         sess = task->conn->session;
2018         ddb_entry = sess->dd_data;
2019         ha = ddb_entry->ha;
2020         task_data = task->dd_data;
2021
2022         if (task->data_count) {
2023                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
2024                                  task->data_count, PCI_DMA_TODEVICE);
2025         }
2026
2027         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
2028                       __func__, task->conn->max_recv_dlength, hdr_len));
2029
2030         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
2031                           task_data->resp_buffer, task_data->resp_dma);
2032         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
2033                           task_data->req_buffer, task_data->req_dma);
2034         return;
2035 }
2036
2037 static int qla4xxx_task_xmit(struct iscsi_task *task)
2038 {
2039         struct scsi_cmnd *sc = task->sc;
2040         struct iscsi_session *sess = task->conn->session;
2041         struct ddb_entry *ddb_entry = sess->dd_data;
2042         struct scsi_qla_host *ha = ddb_entry->ha;
2043
2044         if (!sc)
2045                 return qla4xxx_send_passthru0(task);
2046
2047         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
2048                    __func__);
2049         return -ENOSYS;
2050 }
2051
2052 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
2053                                          struct iscsi_bus_flash_conn *conn,
2054                                          struct dev_db_entry *fw_ddb_entry)
2055 {
2056         unsigned long options = 0;
2057         int rc = 0;
2058
2059         options = le16_to_cpu(fw_ddb_entry->options);
2060         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
2061         if (test_bit(OPT_IPV6_DEVICE, &options)) {
2062                 rc = iscsi_switch_str_param(&sess->portal_type,
2063                                             PORTAL_TYPE_IPV6);
2064                 if (rc)
2065                         goto exit_copy;
2066         } else {
2067                 rc = iscsi_switch_str_param(&sess->portal_type,
2068                                             PORTAL_TYPE_IPV4);
2069                 if (rc)
2070                         goto exit_copy;
2071         }
2072
2073         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
2074                                               &options);
2075         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
2076         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
2077
2078         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2079         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
2080         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
2081         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
2082         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
2083         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
2084                                             &options);
2085         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
2086         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
2087         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
2088         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
2089                                              &options);
2090         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
2091         sess->discovery_auth_optional =
2092                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
2093         if (test_bit(ISCSIOPT_ERL1, &options))
2094                 sess->erl |= BIT_1;
2095         if (test_bit(ISCSIOPT_ERL0, &options))
2096                 sess->erl |= BIT_0;
2097
2098         options = le16_to_cpu(fw_ddb_entry->tcp_options);
2099         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
2100         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
2101         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
2102         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
2103                 conn->tcp_timer_scale |= BIT_3;
2104         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
2105                 conn->tcp_timer_scale |= BIT_2;
2106         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
2107                 conn->tcp_timer_scale |= BIT_1;
2108
2109         conn->tcp_timer_scale >>= 1;
2110         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
2111
2112         options = le16_to_cpu(fw_ddb_entry->ip_options);
2113         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
2114
2115         conn->max_recv_dlength = BYTE_UNITS *
2116                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2117         conn->max_xmit_dlength = BYTE_UNITS *
2118                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2119         sess->first_burst = BYTE_UNITS *
2120                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2121         sess->max_burst = BYTE_UNITS *
2122                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2123         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2124         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2125         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2126         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2127         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
2128         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
2129         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
2130         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
2131         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
2132         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
2133         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
2134         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
2135         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
2136         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
2137         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2138         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
2139
2140         sess->default_taskmgmt_timeout =
2141                                 le16_to_cpu(fw_ddb_entry->def_timeout);
2142         conn->port = le16_to_cpu(fw_ddb_entry->port);
2143
2144         options = le16_to_cpu(fw_ddb_entry->options);
2145         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2146         if (!conn->ipaddress) {
2147                 rc = -ENOMEM;
2148                 goto exit_copy;
2149         }
2150
2151         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2152         if (!conn->redirect_ipaddr) {
2153                 rc = -ENOMEM;
2154                 goto exit_copy;
2155         }
2156
2157         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
2158         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
2159
2160         if (test_bit(OPT_IPV6_DEVICE, &options)) {
2161                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
2162
2163                 conn->link_local_ipv6_addr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2164                 if (!conn->link_local_ipv6_addr) {
2165                         rc = -ENOMEM;
2166                         goto exit_copy;
2167                 }
2168
2169                 memcpy(conn->link_local_ipv6_addr,
2170                        fw_ddb_entry->link_local_ipv6_addr, IPv6_ADDR_LEN);
2171         } else {
2172                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
2173         }
2174
2175         if (fw_ddb_entry->iscsi_name[0]) {
2176                 rc = iscsi_switch_str_param(&sess->targetname,
2177                                             (char *)fw_ddb_entry->iscsi_name);
2178                 if (rc)
2179                         goto exit_copy;
2180         }
2181
2182         if (fw_ddb_entry->iscsi_alias[0]) {
2183                 rc = iscsi_switch_str_param(&sess->targetalias,
2184                                             (char *)fw_ddb_entry->iscsi_alias);
2185                 if (rc)
2186                         goto exit_copy;
2187         }
2188
2189         COPY_ISID(sess->isid, fw_ddb_entry->isid);
2190
2191 exit_copy:
2192         return rc;
2193 }
2194
2195 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
2196                                        struct iscsi_bus_flash_conn *conn,
2197                                        struct dev_db_entry *fw_ddb_entry)
2198 {
2199         uint16_t options;
2200         int rc = 0;
2201
2202         options = le16_to_cpu(fw_ddb_entry->options);
2203         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
2204         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
2205                 options |= BIT_8;
2206         else
2207                 options &= ~BIT_8;
2208
2209         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
2210         SET_BITVAL(sess->discovery_sess, options, BIT_4);
2211         SET_BITVAL(sess->entry_state, options, BIT_3);
2212         fw_ddb_entry->options = cpu_to_le16(options);
2213
2214         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2215         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
2216         SET_BITVAL(conn->datadgst_en, options, BIT_12);
2217         SET_BITVAL(sess->imm_data_en, options, BIT_11);
2218         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
2219         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
2220         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
2221         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
2222         SET_BITVAL(conn->snack_req_en, options, BIT_6);
2223         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
2224         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
2225         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
2226         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
2227         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
2228         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
2229
2230         options = le16_to_cpu(fw_ddb_entry->tcp_options);
2231         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
2232         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
2233         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
2234         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
2235         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
2236         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
2237         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
2238         fw_ddb_entry->tcp_options = cpu_to_le16(options);
2239
2240         options = le16_to_cpu(fw_ddb_entry->ip_options);
2241         SET_BITVAL(conn->fragment_disable, options, BIT_4);
2242         fw_ddb_entry->ip_options = cpu_to_le16(options);
2243
2244         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
2245         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
2246                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
2247         fw_ddb_entry->iscsi_max_snd_data_seg_len =
2248                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
2249         fw_ddb_entry->iscsi_first_burst_len =
2250                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
2251         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
2252                                             BYTE_UNITS);
2253         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
2254         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
2255         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
2256         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
2257         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
2258         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
2259         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
2260         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
2261         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
2262         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
2263         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
2264         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
2265         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
2266         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
2267         fw_ddb_entry->port = cpu_to_le16(conn->port);
2268         fw_ddb_entry->def_timeout =
2269                                 cpu_to_le16(sess->default_taskmgmt_timeout);
2270
2271         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
2272                 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
2273         else
2274                 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
2275
2276         if (conn->ipaddress)
2277                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
2278                        sizeof(fw_ddb_entry->ip_addr));
2279
2280         if (conn->redirect_ipaddr)
2281                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
2282                        sizeof(fw_ddb_entry->tgt_addr));
2283
2284         if (conn->link_local_ipv6_addr)
2285                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
2286                        conn->link_local_ipv6_addr,
2287                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
2288
2289         if (sess->targetname)
2290                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
2291                        sizeof(fw_ddb_entry->iscsi_name));
2292
2293         if (sess->targetalias)
2294                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
2295                        sizeof(fw_ddb_entry->iscsi_alias));
2296
2297         COPY_ISID(fw_ddb_entry->isid, sess->isid);
2298
2299         return rc;
2300 }
2301
2302 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
2303                                              struct iscsi_session *sess,
2304                                              struct dev_db_entry *fw_ddb_entry)
2305 {
2306         unsigned long options = 0;
2307         uint16_t ddb_link;
2308         uint16_t disc_parent;
2309
2310         options = le16_to_cpu(fw_ddb_entry->options);
2311         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
2312         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
2313                                               &options);
2314         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
2315
2316         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2317         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
2318         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
2319         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
2320         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
2321         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
2322                                             &options);
2323         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
2324         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
2325         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
2326                                              &options);
2327         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
2328         sess->discovery_auth_optional =
2329                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
2330         if (test_bit(ISCSIOPT_ERL1, &options))
2331                 sess->erl |= BIT_1;
2332         if (test_bit(ISCSIOPT_ERL0, &options))
2333                 sess->erl |= BIT_0;
2334
2335         options = le16_to_cpu(fw_ddb_entry->tcp_options);
2336         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
2337         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
2338         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
2339         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
2340                 conn->tcp_timer_scale |= BIT_3;
2341         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
2342                 conn->tcp_timer_scale |= BIT_2;
2343         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
2344                 conn->tcp_timer_scale |= BIT_1;
2345
2346         conn->tcp_timer_scale >>= 1;
2347         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
2348
2349         options = le16_to_cpu(fw_ddb_entry->ip_options);
2350         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
2351
2352         conn->max_recv_dlength = BYTE_UNITS *
2353                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2354         conn->max_xmit_dlength = BYTE_UNITS *
2355                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2356         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2357         sess->first_burst = BYTE_UNITS *
2358                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2359         sess->max_burst = BYTE_UNITS *
2360                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2361         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2362         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2363         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2364         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
2365         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
2366         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
2367         conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
2368         conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
2369         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
2370         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
2371         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
2372         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
2373         COPY_ISID(sess->isid, fw_ddb_entry->isid);
2374
2375         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
2376         if (ddb_link < MAX_DDB_ENTRIES)
2377                 sess->discovery_parent_idx = ddb_link;
2378         else
2379                 sess->discovery_parent_idx = DDB_NO_LINK;
2380
2381         if (ddb_link == DDB_ISNS)
2382                 disc_parent = ISCSI_DISC_PARENT_ISNS;
2383         else if (ddb_link == DDB_NO_LINK)
2384                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
2385         else if (ddb_link < MAX_DDB_ENTRIES)
2386                 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
2387         else
2388                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
2389
2390         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
2391                         iscsi_get_discovery_parent_name(disc_parent), 0);
2392
2393         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2394                         (char *)fw_ddb_entry->iscsi_alias, 0);
2395 }
2396
2397 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
2398                                      struct dev_db_entry *fw_ddb_entry,
2399                                      struct iscsi_cls_session *cls_sess,
2400                                      struct iscsi_cls_conn *cls_conn)
2401 {
2402         int buflen = 0;
2403         struct iscsi_session *sess;
2404         struct ddb_entry *ddb_entry;
2405         struct iscsi_conn *conn;
2406         char ip_addr[DDB_IPADDR_LEN];
2407         uint16_t options = 0;
2408
2409         sess = cls_sess->dd_data;
2410         ddb_entry = sess->dd_data;
2411         conn = cls_conn->dd_data;
2412
2413         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2414
2415         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
2416
2417         sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
2418         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
2419
2420         memset(ip_addr, 0, sizeof(ip_addr));
2421         options = le16_to_cpu(fw_ddb_entry->options);
2422         if (options & DDB_OPT_IPV6_DEVICE) {
2423                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
2424
2425                 memset(ip_addr, 0, sizeof(ip_addr));
2426                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
2427         } else {
2428                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
2429                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
2430         }
2431
2432         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
2433                         (char *)ip_addr, buflen);
2434         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
2435                         (char *)fw_ddb_entry->iscsi_name, buflen);
2436         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
2437                         (char *)ha->name_string, buflen);
2438 }
2439
2440 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
2441                                              struct ddb_entry *ddb_entry)
2442 {
2443         struct iscsi_cls_session *cls_sess;
2444         struct iscsi_cls_conn *cls_conn;
2445         uint32_t ddb_state;
2446         dma_addr_t fw_ddb_entry_dma;
2447         struct dev_db_entry *fw_ddb_entry;
2448
2449         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2450                                           &fw_ddb_entry_dma, GFP_KERNEL);
2451         if (!fw_ddb_entry) {
2452                 ql4_printk(KERN_ERR, ha,
2453                            "%s: Unable to allocate dma buffer\n", __func__);
2454                 goto exit_session_conn_fwddb_param;
2455         }
2456
2457         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2458                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2459                                     NULL, NULL, NULL) == QLA_ERROR) {
2460                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2461                                   "get_ddb_entry for fw_ddb_index %d\n",
2462                                   ha->host_no, __func__,
2463                                   ddb_entry->fw_ddb_index));
2464                 goto exit_session_conn_fwddb_param;
2465         }
2466
2467         cls_sess = ddb_entry->sess;
2468
2469         cls_conn = ddb_entry->conn;
2470
2471         /* Update params */
2472         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
2473
2474 exit_session_conn_fwddb_param:
2475         if (fw_ddb_entry)
2476                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2477                                   fw_ddb_entry, fw_ddb_entry_dma);
2478 }
2479
2480 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
2481                                        struct ddb_entry *ddb_entry)
2482 {
2483         struct iscsi_cls_session *cls_sess;
2484         struct iscsi_cls_conn *cls_conn;
2485         struct iscsi_session *sess;
2486         struct iscsi_conn *conn;
2487         uint32_t ddb_state;
2488         dma_addr_t fw_ddb_entry_dma;
2489         struct dev_db_entry *fw_ddb_entry;
2490
2491         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2492                                           &fw_ddb_entry_dma, GFP_KERNEL);
2493         if (!fw_ddb_entry) {
2494                 ql4_printk(KERN_ERR, ha,
2495                            "%s: Unable to allocate dma buffer\n", __func__);
2496                 goto exit_session_conn_param;
2497         }
2498
2499         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2500                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2501                                     NULL, NULL, NULL) == QLA_ERROR) {
2502                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2503                                   "get_ddb_entry for fw_ddb_index %d\n",
2504                                   ha->host_no, __func__,
2505                                   ddb_entry->fw_ddb_index));
2506                 goto exit_session_conn_param;
2507         }
2508
2509         cls_sess = ddb_entry->sess;
2510         sess = cls_sess->dd_data;
2511
2512         cls_conn = ddb_entry->conn;
2513         conn = cls_conn->dd_data;
2514
2515         /* Update timers after login */
2516         ddb_entry->default_relogin_timeout =
2517                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
2518                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
2519                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
2520         ddb_entry->default_time2wait =
2521                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2522
2523         /* Update params */
2524         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2525         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
2526
2527         memcpy(sess->initiatorname, ha->name_string,
2528                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
2529
2530 exit_session_conn_param:
2531         if (fw_ddb_entry)
2532                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2533                                   fw_ddb_entry, fw_ddb_entry_dma);
2534 }
2535
2536 /*
2537  * Timer routines
2538  */
2539
2540 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
2541                                 unsigned long interval)
2542 {
2543         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
2544                      __func__, ha->host->host_no));
2545         init_timer(&ha->timer);
2546         ha->timer.expires = jiffies + interval * HZ;
2547         ha->timer.data = (unsigned long)ha;
2548         ha->timer.function = (void (*)(unsigned long))func;
2549         add_timer(&ha->timer);
2550         ha->timer_active = 1;
2551 }
2552
2553 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
2554 {
2555         del_timer_sync(&ha->timer);
2556         ha->timer_active = 0;
2557 }
2558
2559 /***
2560  * qla4xxx_mark_device_missing - blocks the session
2561  * @cls_session: Pointer to the session to be blocked
2562  * @ddb_entry: Pointer to device database entry
2563  *
2564  * This routine marks a device missing and close connection.
2565  **/
2566 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
2567 {
2568         iscsi_block_session(cls_session);
2569 }
2570
2571 /**
2572  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
2573  * @ha: Pointer to host adapter structure.
2574  *
2575  * This routine marks a device missing and resets the relogin retry count.
2576  **/
2577 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
2578 {
2579         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
2580 }
2581
2582 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
2583                                        struct ddb_entry *ddb_entry,
2584                                        struct scsi_cmnd *cmd)
2585 {
2586         struct srb *srb;
2587
2588         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2589         if (!srb)
2590                 return srb;
2591
2592         kref_init(&srb->srb_ref);
2593         srb->ha = ha;
2594         srb->ddb = ddb_entry;
2595         srb->cmd = cmd;
2596         srb->flags = 0;
2597         CMD_SP(cmd) = (void *)srb;
2598
2599         return srb;
2600 }
2601
2602 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
2603 {
2604         struct scsi_cmnd *cmd = srb->cmd;
2605
2606         if (srb->flags & SRB_DMA_VALID) {
2607                 scsi_dma_unmap(cmd);
2608                 srb->flags &= ~SRB_DMA_VALID;
2609         }
2610         CMD_SP(cmd) = NULL;
2611 }
2612
2613 void qla4xxx_srb_compl(struct kref *ref)
2614 {
2615         struct srb *srb = container_of(ref, struct srb, srb_ref);
2616         struct scsi_cmnd *cmd = srb->cmd;
2617         struct scsi_qla_host *ha = srb->ha;
2618
2619         qla4xxx_srb_free_dma(ha, srb);
2620
2621         mempool_free(srb, ha->srb_mempool);
2622
2623         cmd->scsi_done(cmd);
2624 }
2625
2626 /**
2627  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
2628  * @host: scsi host
2629  * @cmd: Pointer to Linux's SCSI command structure
2630  *
2631  * Remarks:
2632  * This routine is invoked by Linux to send a SCSI command to the driver.
2633  * The mid-level driver tries to ensure that queuecommand never gets
2634  * invoked concurrently with itself or the interrupt handler (although
2635  * the interrupt handler may call this routine as part of request-
2636  * completion handling).   Unfortunely, it sometimes calls the scheduler
2637  * in interrupt context which is a big NO! NO!.
2638  **/
2639 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
2640 {
2641         struct scsi_qla_host *ha = to_qla_host(host);
2642         struct ddb_entry *ddb_entry = cmd->device->hostdata;
2643         struct iscsi_cls_session *sess = ddb_entry->sess;
2644         struct srb *srb;
2645         int rval;
2646
2647         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2648                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
2649                         cmd->result = DID_NO_CONNECT << 16;
2650                 else
2651                         cmd->result = DID_REQUEUE << 16;
2652                 goto qc_fail_command;
2653         }
2654
2655         if (!sess) {
2656                 cmd->result = DID_IMM_RETRY << 16;
2657                 goto qc_fail_command;
2658         }
2659
2660         rval = iscsi_session_chkready(sess);
2661         if (rval) {
2662                 cmd->result = rval;
2663                 goto qc_fail_command;
2664         }
2665
2666         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2667             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2668             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2669             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2670             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2671             !test_bit(AF_ONLINE, &ha->flags) ||
2672             !test_bit(AF_LINK_UP, &ha->flags) ||
2673             test_bit(AF_LOOPBACK, &ha->flags) ||
2674             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
2675                 goto qc_host_busy;
2676
2677         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
2678         if (!srb)
2679                 goto qc_host_busy;
2680
2681         rval = qla4xxx_send_command_to_isp(ha, srb);
2682         if (rval != QLA_SUCCESS)
2683                 goto qc_host_busy_free_sp;
2684
2685         return 0;
2686
2687 qc_host_busy_free_sp:
2688         qla4xxx_srb_free_dma(ha, srb);
2689         mempool_free(srb, ha->srb_mempool);
2690
2691 qc_host_busy:
2692         return SCSI_MLQUEUE_HOST_BUSY;
2693
2694 qc_fail_command:
2695         cmd->scsi_done(cmd);
2696
2697         return 0;
2698 }
2699
2700 /**
2701  * qla4xxx_mem_free - frees memory allocated to adapter
2702  * @ha: Pointer to host adapter structure.
2703  *
2704  * Frees memory previously allocated by qla4xxx_mem_alloc
2705  **/
2706 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
2707 {
2708         if (ha->queues)
2709                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
2710                                   ha->queues_dma);
2711
2712          if (ha->fw_dump)
2713                 vfree(ha->fw_dump);
2714
2715         ha->queues_len = 0;
2716         ha->queues = NULL;
2717         ha->queues_dma = 0;
2718         ha->request_ring = NULL;
2719         ha->request_dma = 0;
2720         ha->response_ring = NULL;
2721         ha->response_dma = 0;
2722         ha->shadow_regs = NULL;
2723         ha->shadow_regs_dma = 0;
2724         ha->fw_dump = NULL;
2725         ha->fw_dump_size = 0;
2726
2727         /* Free srb pool. */
2728         if (ha->srb_mempool)
2729                 mempool_destroy(ha->srb_mempool);
2730
2731         ha->srb_mempool = NULL;
2732
2733         if (ha->chap_dma_pool)
2734                 dma_pool_destroy(ha->chap_dma_pool);
2735
2736         if (ha->chap_list)
2737                 vfree(ha->chap_list);
2738         ha->chap_list = NULL;
2739
2740         if (ha->fw_ddb_dma_pool)
2741                 dma_pool_destroy(ha->fw_ddb_dma_pool);
2742
2743         /* release io space registers  */
2744         if (is_qla8022(ha)) {
2745                 if (ha->nx_pcibase)
2746                         iounmap(
2747                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
2748         } else if (is_qla8032(ha) || is_qla8042(ha)) {
2749                 if (ha->nx_pcibase)
2750                         iounmap(
2751                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
2752         } else if (ha->reg) {
2753                 iounmap(ha->reg);
2754         }
2755
2756         if (ha->reset_tmplt.buff)
2757                 vfree(ha->reset_tmplt.buff);
2758
2759         pci_release_regions(ha->pdev);
2760 }
2761
2762 /**
2763  * qla4xxx_mem_alloc - allocates memory for use by adapter.
2764  * @ha: Pointer to host adapter structure
2765  *
2766  * Allocates DMA memory for request and response queues. Also allocates memory
2767  * for srbs.
2768  **/
2769 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
2770 {
2771         unsigned long align;
2772
2773         /* Allocate contiguous block of DMA memory for queues. */
2774         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2775                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
2776                           sizeof(struct shadow_regs) +
2777                           MEM_ALIGN_VALUE +
2778                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
2779         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
2780                                         &ha->queues_dma, GFP_KERNEL);
2781         if (ha->queues == NULL) {
2782                 ql4_printk(KERN_WARNING, ha,
2783                     "Memory Allocation failed - queues.\n");
2784
2785                 goto mem_alloc_error_exit;
2786         }
2787         memset(ha->queues, 0, ha->queues_len);
2788
2789         /*
2790          * As per RISC alignment requirements -- the bus-address must be a
2791          * multiple of the request-ring size (in bytes).
2792          */
2793         align = 0;
2794         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
2795                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
2796                                            (MEM_ALIGN_VALUE - 1));
2797
2798         /* Update request and response queue pointers. */
2799         ha->request_dma = ha->queues_dma + align;
2800         ha->request_ring = (struct queue_entry *) (ha->queues + align);
2801         ha->response_dma = ha->queues_dma + align +
2802                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
2803         ha->response_ring = (struct queue_entry *) (ha->queues + align +
2804                                                     (REQUEST_QUEUE_DEPTH *
2805                                                      QUEUE_SIZE));
2806         ha->shadow_regs_dma = ha->queues_dma + align +
2807                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2808                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
2809         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
2810                                                   (REQUEST_QUEUE_DEPTH *
2811                                                    QUEUE_SIZE) +
2812                                                   (RESPONSE_QUEUE_DEPTH *
2813                                                    QUEUE_SIZE));
2814
2815         /* Allocate memory for srb pool. */
2816         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2817                                          mempool_free_slab, srb_cachep);
2818         if (ha->srb_mempool == NULL) {
2819                 ql4_printk(KERN_WARNING, ha,
2820                     "Memory Allocation failed - SRB Pool.\n");
2821
2822                 goto mem_alloc_error_exit;
2823         }
2824
2825         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
2826                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
2827
2828         if (ha->chap_dma_pool == NULL) {
2829                 ql4_printk(KERN_WARNING, ha,
2830                     "%s: chap_dma_pool allocation failed..\n", __func__);
2831                 goto mem_alloc_error_exit;
2832         }
2833
2834         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
2835                                               DDB_DMA_BLOCK_SIZE, 8, 0);
2836
2837         if (ha->fw_ddb_dma_pool == NULL) {
2838                 ql4_printk(KERN_WARNING, ha,
2839                            "%s: fw_ddb_dma_pool allocation failed..\n",
2840                            __func__);
2841                 goto mem_alloc_error_exit;
2842         }
2843
2844         return QLA_SUCCESS;
2845
2846 mem_alloc_error_exit:
2847         qla4xxx_mem_free(ha);
2848         return QLA_ERROR;
2849 }
2850
2851 /**
2852  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
2853  * @ha: adapter block pointer.
2854  *
2855  * Note: The caller should not hold the idc lock.
2856  **/
2857 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
2858 {
2859         uint32_t temp, temp_state, temp_val;
2860         int status = QLA_SUCCESS;
2861
2862         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
2863
2864         temp_state = qla82xx_get_temp_state(temp);
2865         temp_val = qla82xx_get_temp_val(temp);
2866
2867         if (temp_state == QLA82XX_TEMP_PANIC) {
2868                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
2869                            " exceeds maximum allowed. Hardware has been shut"
2870                            " down.\n", temp_val);
2871                 status = QLA_ERROR;
2872         } else if (temp_state == QLA82XX_TEMP_WARN) {
2873                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
2874                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
2875                                    " degrees C exceeds operating range."
2876                                    " Immediate action needed.\n", temp_val);
2877         } else {
2878                 if (ha->temperature == QLA82XX_TEMP_WARN)
2879                         ql4_printk(KERN_INFO, ha, "Device temperature is"
2880                                    " now %d degrees C in normal range.\n",
2881                                    temp_val);
2882         }
2883         ha->temperature = temp_state;
2884         return status;
2885 }
2886
2887 /**
2888  * qla4_8xxx_check_fw_alive  - Check firmware health
2889  * @ha: Pointer to host adapter structure.
2890  *
2891  * Context: Interrupt
2892  **/
2893 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
2894 {
2895         uint32_t fw_heartbeat_counter;
2896         int status = QLA_SUCCESS;
2897
2898         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
2899                                                    QLA8XXX_PEG_ALIVE_COUNTER);
2900         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
2901         if (fw_heartbeat_counter == 0xffffffff) {
2902                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
2903                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
2904                     ha->host_no, __func__));
2905                 return status;
2906         }
2907
2908         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
2909                 ha->seconds_since_last_heartbeat++;
2910                 /* FW not alive after 2 seconds */
2911                 if (ha->seconds_since_last_heartbeat == 2) {
2912                         ha->seconds_since_last_heartbeat = 0;
2913                         qla4_8xxx_dump_peg_reg(ha);
2914                         status = QLA_ERROR;
2915                 }
2916         } else
2917                 ha->seconds_since_last_heartbeat = 0;
2918
2919         ha->fw_heartbeat_counter = fw_heartbeat_counter;
2920         return status;
2921 }
2922
2923 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
2924 {
2925         uint32_t halt_status;
2926         int halt_status_unrecoverable = 0;
2927
2928         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
2929
2930         if (is_qla8022(ha)) {
2931                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
2932                            __func__);
2933                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2934                                 CRB_NIU_XG_PAUSE_CTL_P0 |
2935                                 CRB_NIU_XG_PAUSE_CTL_P1);
2936
2937                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
2938                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
2939                                    __func__);
2940                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
2941                         halt_status_unrecoverable = 1;
2942         } else if (is_qla8032(ha) || is_qla8042(ha)) {
2943                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
2944                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
2945                                    __func__);
2946                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
2947                         halt_status_unrecoverable = 1;
2948         }
2949
2950         /*
2951          * Since we cannot change dev_state in interrupt context,
2952          * set appropriate DPC flag then wakeup DPC
2953          */
2954         if (halt_status_unrecoverable) {
2955                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2956         } else {
2957                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
2958                            __func__);
2959                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2960         }
2961         qla4xxx_mailbox_premature_completion(ha);
2962         qla4xxx_wake_dpc(ha);
2963 }
2964
2965 /**
2966  * qla4_8xxx_watchdog - Poll dev state
2967  * @ha: Pointer to host adapter structure.
2968  *
2969  * Context: Interrupt
2970  **/
2971 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
2972 {
2973         uint32_t dev_state;
2974         uint32_t idc_ctrl;
2975
2976         /* don't poll if reset is going on */
2977         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2978             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2979             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
2980                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
2981
2982                 if (qla4_8xxx_check_temp(ha)) {
2983                         if (is_qla8022(ha)) {
2984                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
2985                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2986                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
2987                                                 CRB_NIU_XG_PAUSE_CTL_P1);
2988                         }
2989                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2990                         qla4xxx_wake_dpc(ha);
2991                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
2992                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2993
2994                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
2995                                    __func__);
2996
2997                         if (is_qla8032(ha) || is_qla8042(ha)) {
2998                                 idc_ctrl = qla4_83xx_rd_reg(ha,
2999                                                         QLA83XX_IDC_DRV_CTRL);
3000                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
3001                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
3002                                                    __func__);
3003                                         qla4xxx_mailbox_premature_completion(
3004                                                                             ha);
3005                                 }
3006                         }
3007
3008                         if ((is_qla8032(ha) || is_qla8042(ha)) ||
3009                             (is_qla8022(ha) && !ql4xdontresethba)) {
3010                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
3011                                 qla4xxx_wake_dpc(ha);
3012                         }
3013                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
3014                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3015                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
3016                             __func__);
3017                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
3018                         qla4xxx_wake_dpc(ha);
3019                 } else  {
3020                         /* Check firmware health */
3021                         if (qla4_8xxx_check_fw_alive(ha))
3022                                 qla4_8xxx_process_fw_error(ha);
3023                 }
3024         }
3025 }
3026
3027 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3028 {
3029         struct iscsi_session *sess;
3030         struct ddb_entry *ddb_entry;
3031         struct scsi_qla_host *ha;
3032
3033         sess = cls_sess->dd_data;
3034         ddb_entry = sess->dd_data;
3035         ha = ddb_entry->ha;
3036
3037         if (!(ddb_entry->ddb_type == FLASH_DDB))
3038                 return;
3039
3040         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
3041             !iscsi_is_session_online(cls_sess)) {
3042                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
3043                     INVALID_ENTRY) {
3044                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
3045                                         0) {
3046                                 atomic_set(&ddb_entry->retry_relogin_timer,
3047                                            INVALID_ENTRY);
3048                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
3049                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
3050                                 DEBUG2(ql4_printk(KERN_INFO, ha,
3051                                        "%s: index [%d] login device\n",
3052                                         __func__, ddb_entry->fw_ddb_index));
3053                         } else
3054                                 atomic_dec(&ddb_entry->retry_relogin_timer);
3055                 }
3056         }
3057
3058         /* Wait for relogin to timeout */
3059         if (atomic_read(&ddb_entry->relogin_timer) &&
3060             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
3061                 /*
3062                  * If the relogin times out and the device is
3063                  * still NOT ONLINE then try and relogin again.
3064                  */
3065                 if (!iscsi_is_session_online(cls_sess)) {
3066                         /* Reset retry relogin timer */
3067                         atomic_inc(&ddb_entry->relogin_retry_count);
3068                         DEBUG2(ql4_printk(KERN_INFO, ha,
3069                                 "%s: index[%d] relogin timed out-retrying"
3070                                 " relogin (%d), retry (%d)\n", __func__,
3071                                 ddb_entry->fw_ddb_index,
3072                                 atomic_read(&ddb_entry->relogin_retry_count),
3073                                 ddb_entry->default_time2wait + 4));
3074                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
3075                         atomic_set(&ddb_entry->retry_relogin_timer,
3076                                    ddb_entry->default_time2wait + 4);
3077                 }
3078         }
3079 }
3080
3081 /**
3082  * qla4xxx_timer - checks every second for work to do.
3083  * @ha: Pointer to host adapter structure.
3084  **/
3085 static void qla4xxx_timer(struct scsi_qla_host *ha)
3086 {
3087         int start_dpc = 0;
3088         uint16_t w;
3089
3090         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
3091
3092         /* If we are in the middle of AER/EEH processing
3093          * skip any processing and reschedule the timer
3094          */
3095         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3096                 mod_timer(&ha->timer, jiffies + HZ);
3097                 return;
3098         }
3099
3100         /* Hardware read to trigger an EEH error during mailbox waits. */
3101         if (!pci_channel_offline(ha->pdev))
3102                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
3103
3104         if (is_qla80XX(ha))
3105                 qla4_8xxx_watchdog(ha);
3106
3107         if (is_qla40XX(ha)) {
3108                 /* Check for heartbeat interval. */
3109                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
3110                     ha->heartbeat_interval != 0) {
3111                         ha->seconds_since_last_heartbeat++;
3112                         if (ha->seconds_since_last_heartbeat >
3113                             ha->heartbeat_interval + 2)
3114                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
3115                 }
3116         }
3117
3118         /* Process any deferred work. */
3119         if (!list_empty(&ha->work_list))
3120                 start_dpc++;
3121
3122         /* Wakeup the dpc routine for this adapter, if needed. */
3123         if (start_dpc ||
3124              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3125              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
3126              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
3127              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3128              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3129              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
3130              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
3131              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
3132              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
3133              test_bit(DPC_AEN, &ha->dpc_flags)) {
3134                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
3135                               " - dpc flags = 0x%lx\n",
3136                               ha->host_no, __func__, ha->dpc_flags));
3137                 qla4xxx_wake_dpc(ha);
3138         }
3139
3140         /* Reschedule timer thread to call us back in one second */
3141         mod_timer(&ha->timer, jiffies + HZ);
3142
3143         DEBUG2(ha->seconds_since_last_intr++);
3144 }
3145
3146 /**
3147  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
3148  * @ha: Pointer to host adapter structure.
3149  *
3150  * This routine stalls the driver until all outstanding commands are returned.
3151  * Caller must release the Hardware Lock prior to calling this routine.
3152  **/
3153 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
3154 {
3155         uint32_t index = 0;
3156         unsigned long flags;
3157         struct scsi_cmnd *cmd;
3158
3159         unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
3160
3161         DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
3162             "complete\n", WAIT_CMD_TOV));
3163
3164         while (!time_after_eq(jiffies, wtime)) {
3165                 spin_lock_irqsave(&ha->hardware_lock, flags);
3166                 /* Find a command that hasn't completed. */
3167                 for (index = 0; index < ha->host->can_queue; index++) {
3168                         cmd = scsi_host_find_tag(ha->host, index);
3169                         /*
3170                          * We cannot just check if the index is valid,
3171                          * becase if we are run from the scsi eh, then
3172                          * the scsi/block layer is going to prevent
3173                          * the tag from being released.
3174                          */
3175                         if (cmd != NULL && CMD_SP(cmd))
3176                                 break;
3177                 }
3178                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3179
3180                 /* If No Commands are pending, wait is complete */
3181                 if (index == ha->host->can_queue)
3182                         return QLA_SUCCESS;
3183
3184                 msleep(1000);
3185         }
3186         /* If we timed out on waiting for commands to come back
3187          * return ERROR. */
3188         return QLA_ERROR;
3189 }
3190
3191 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
3192 {
3193         uint32_t ctrl_status;
3194         unsigned long flags = 0;
3195
3196         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
3197
3198         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
3199                 return QLA_ERROR;
3200
3201         spin_lock_irqsave(&ha->hardware_lock, flags);
3202
3203         /*
3204          * If the SCSI Reset Interrupt bit is set, clear it.
3205          * Otherwise, the Soft Reset won't work.
3206          */
3207         ctrl_status = readw(&ha->reg->ctrl_status);
3208         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
3209                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
3210
3211         /* Issue Soft Reset */
3212         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
3213         readl(&ha->reg->ctrl_status);
3214
3215         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3216         return QLA_SUCCESS;
3217 }
3218
3219 /**
3220  * qla4xxx_soft_reset - performs soft reset.
3221  * @ha: Pointer to host adapter structure.
3222  **/
3223 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
3224 {
3225         uint32_t max_wait_time;
3226         unsigned long flags = 0;
3227         int status;
3228         uint32_t ctrl_status;
3229
3230         status = qla4xxx_hw_reset(ha);
3231         if (status != QLA_SUCCESS)
3232                 return status;
3233
3234         status = QLA_ERROR;
3235         /* Wait until the Network Reset Intr bit is cleared */
3236         max_wait_time = RESET_INTR_TOV;
3237         do {
3238                 spin_lock_irqsave(&ha->hardware_lock, flags);
3239                 ctrl_status = readw(&ha->reg->ctrl_status);
3240                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3241
3242                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
3243                         break;
3244
3245                 msleep(1000);
3246         } while ((--max_wait_time));
3247
3248         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
3249                 DEBUG2(printk(KERN_WARNING
3250                               "scsi%ld: Network Reset Intr not cleared by "
3251                               "Network function, clearing it now!\n",
3252                               ha->host_no));
3253                 spin_lock_irqsave(&ha->hardware_lock, flags);
3254                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
3255                 readl(&ha->reg->ctrl_status);
3256                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3257         }
3258
3259         /* Wait until the firmware tells us the Soft Reset is done */
3260         max_wait_time = SOFT_RESET_TOV;
3261         do {
3262                 spin_lock_irqsave(&ha->hardware_lock, flags);
3263                 ctrl_status = readw(&ha->reg->ctrl_status);
3264                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3265
3266                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
3267                         status = QLA_SUCCESS;
3268                         break;
3269                 }
3270
3271                 msleep(1000);
3272         } while ((--max_wait_time));
3273
3274         /*
3275          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
3276          * after the soft reset has taken place.
3277          */
3278         spin_lock_irqsave(&ha->hardware_lock, flags);
3279         ctrl_status = readw(&ha->reg->ctrl_status);
3280         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
3281                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
3282                 readl(&ha->reg->ctrl_status);
3283         }
3284         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3285
3286         /* If soft reset fails then most probably the bios on other
3287          * function is also enabled.
3288          * Since the initialization is sequential the other fn
3289          * wont be able to acknowledge the soft reset.
3290          * Issue a force soft reset to workaround this scenario.
3291          */
3292         if (max_wait_time == 0) {
3293                 /* Issue Force Soft Reset */
3294                 spin_lock_irqsave(&ha->hardware_lock, flags);
3295                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
3296                 readl(&ha->reg->ctrl_status);
3297                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3298                 /* Wait until the firmware tells us the Soft Reset is done */
3299                 max_wait_time = SOFT_RESET_TOV;
3300                 do {
3301                         spin_lock_irqsave(&ha->hardware_lock, flags);
3302                         ctrl_status = readw(&ha->reg->ctrl_status);
3303                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3304
3305                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
3306                                 status = QLA_SUCCESS;
3307                                 break;
3308                         }
3309
3310                         msleep(1000);
3311                 } while ((--max_wait_time));
3312         }
3313
3314         return status;
3315 }
3316
3317 /**
3318  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
3319  * @ha: Pointer to host adapter structure.
3320  * @res: returned scsi status
3321  *
3322  * This routine is called just prior to a HARD RESET to return all
3323  * outstanding commands back to the Operating System.
3324  * Caller should make sure that the following locks are released
3325  * before this calling routine: Hardware lock, and io_request_lock.
3326  **/
3327 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
3328 {
3329         struct srb *srb;
3330         int i;
3331         unsigned long flags;
3332
3333         spin_lock_irqsave(&ha->hardware_lock, flags);
3334         for (i = 0; i < ha->host->can_queue; i++) {
3335                 srb = qla4xxx_del_from_active_array(ha, i);
3336                 if (srb != NULL) {
3337                         srb->cmd->result = res;
3338                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
3339                 }
3340         }
3341         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3342 }
3343
3344 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
3345 {
3346         clear_bit(AF_ONLINE, &ha->flags);
3347
3348         /* Disable the board */
3349         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
3350
3351         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3352         qla4xxx_mark_all_devices_missing(ha);
3353         clear_bit(AF_INIT_DONE, &ha->flags);
3354 }
3355
3356 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
3357 {
3358         struct iscsi_session *sess;
3359         struct ddb_entry *ddb_entry;
3360
3361         sess = cls_session->dd_data;
3362         ddb_entry = sess->dd_data;
3363         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
3364
3365         if (ddb_entry->ddb_type == FLASH_DDB)
3366                 iscsi_block_session(ddb_entry->sess);
3367         else
3368                 iscsi_session_failure(cls_session->dd_data,
3369                                       ISCSI_ERR_CONN_FAILED);
3370 }
3371
3372 /**
3373  * qla4xxx_recover_adapter - recovers adapter after a fatal error
3374  * @ha: Pointer to host adapter structure.
3375  **/
3376 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
3377 {
3378         int status = QLA_ERROR;
3379         uint8_t reset_chip = 0;
3380         uint32_t dev_state;
3381         unsigned long wait;
3382
3383         /* Stall incoming I/O until we are done */
3384         scsi_block_requests(ha->host);
3385         clear_bit(AF_ONLINE, &ha->flags);
3386         clear_bit(AF_LINK_UP, &ha->flags);
3387
3388         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
3389
3390         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3391
3392         if ((is_qla8032(ha) || is_qla8042(ha)) &&
3393             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
3394                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3395                            __func__);
3396                 /* disable pause frame for ISP83xx */
3397                 qla4_83xx_disable_pause(ha);
3398         }
3399
3400         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
3401
3402         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
3403                 reset_chip = 1;
3404
3405         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
3406          * do not reset adapter, jump to initialize_adapter */
3407         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3408                 status = QLA_SUCCESS;
3409                 goto recover_ha_init_adapter;
3410         }
3411
3412         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
3413          * from eh_host_reset or ioctl module */
3414         if (is_qla80XX(ha) && !reset_chip &&
3415             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
3416
3417                 DEBUG2(ql4_printk(KERN_INFO, ha,
3418                     "scsi%ld: %s - Performing stop_firmware...\n",
3419                     ha->host_no, __func__));
3420                 status = ha->isp_ops->reset_firmware(ha);
3421                 if (status == QLA_SUCCESS) {
3422                         if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3423                                 qla4xxx_cmd_wait(ha);
3424
3425                         ha->isp_ops->disable_intrs(ha);
3426                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3427                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3428                 } else {
3429                         /* If the stop_firmware fails then
3430                          * reset the entire chip */
3431                         reset_chip = 1;
3432                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3433                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
3434                 }
3435         }
3436
3437         /* Issue full chip reset if recovering from a catastrophic error,
3438          * or if stop_firmware fails for ISP-8xxx.
3439          * This is the default case for ISP-4xxx */
3440         if (is_qla40XX(ha) || reset_chip) {
3441                 if (is_qla40XX(ha))
3442                         goto chip_reset;
3443
3444                 /* Check if 8XXX firmware is alive or not
3445                  * We may have arrived here from NEED_RESET
3446                  * detection only */
3447                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
3448                         goto chip_reset;
3449
3450                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
3451                 while (time_before(jiffies, wait)) {
3452                         if (qla4_8xxx_check_fw_alive(ha)) {
3453                                 qla4xxx_mailbox_premature_completion(ha);
3454                                 break;
3455                         }
3456
3457                         set_current_state(TASK_UNINTERRUPTIBLE);
3458                         schedule_timeout(HZ);
3459                 }
3460 chip_reset:
3461                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3462                         qla4xxx_cmd_wait(ha);
3463
3464                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3465                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3466                 DEBUG2(ql4_printk(KERN_INFO, ha,
3467                     "scsi%ld: %s - Performing chip reset..\n",
3468                     ha->host_no, __func__));
3469                 status = ha->isp_ops->reset_chip(ha);
3470         }
3471
3472         /* Flush any pending ddb changed AENs */
3473         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3474
3475 recover_ha_init_adapter:
3476         /* Upon successful firmware/chip reset, re-initialize the adapter */
3477         if (status == QLA_SUCCESS) {
3478                 /* For ISP-4xxx, force function 1 to always initialize
3479                  * before function 3 to prevent both funcions from
3480                  * stepping on top of the other */
3481                 if (is_qla40XX(ha) && (ha->mac_index == 3))
3482                         ssleep(6);
3483
3484                 /* NOTE: AF_ONLINE flag set upon successful completion of
3485                  *       qla4xxx_initialize_adapter */
3486                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
3487         }
3488
3489         /* Retry failed adapter initialization, if necessary
3490          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
3491          * case to prevent ping-pong resets between functions */
3492         if (!test_bit(AF_ONLINE, &ha->flags) &&
3493             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3494                 /* Adapter initialization failed, see if we can retry
3495                  * resetting the ha.
3496                  * Since we don't want to block the DPC for too long
3497                  * with multiple resets in the same thread,
3498                  * utilize DPC to retry */
3499                 if (is_qla80XX(ha)) {
3500                         ha->isp_ops->idc_lock(ha);
3501                         dev_state = qla4_8xxx_rd_direct(ha,
3502                                                         QLA8XXX_CRB_DEV_STATE);
3503                         ha->isp_ops->idc_unlock(ha);
3504                         if (dev_state == QLA8XXX_DEV_FAILED) {
3505                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
3506                                            "recover adapter. H/W is in Failed "
3507                                            "state\n", __func__);
3508                                 qla4xxx_dead_adapter_cleanup(ha);
3509                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3510                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3511                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3512                                                 &ha->dpc_flags);
3513                                 status = QLA_ERROR;
3514
3515                                 goto exit_recover;
3516                         }
3517                 }
3518
3519                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
3520                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
3521                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
3522                                       "(%d) more times\n", ha->host_no,
3523                                       ha->retry_reset_ha_cnt));
3524                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3525                         status = QLA_ERROR;
3526                 } else {
3527                         if (ha->retry_reset_ha_cnt > 0) {
3528                                 /* Schedule another Reset HA--DPC will retry */
3529                                 ha->retry_reset_ha_cnt--;
3530                                 DEBUG2(printk("scsi%ld: recover adapter - "
3531                                               "retry remaining %d\n",
3532                                               ha->host_no,
3533                                               ha->retry_reset_ha_cnt));
3534                                 status = QLA_ERROR;
3535                         }
3536
3537                         if (ha->retry_reset_ha_cnt == 0) {
3538                                 /* Recover adapter retries have been exhausted.
3539                                  * Adapter DEAD */
3540                                 DEBUG2(printk("scsi%ld: recover adapter "
3541                                               "failed - board disabled\n",
3542                                               ha->host_no));
3543                                 qla4xxx_dead_adapter_cleanup(ha);
3544                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3545                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3546                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3547                                           &ha->dpc_flags);
3548                                 status = QLA_ERROR;
3549                         }
3550                 }
3551         } else {
3552                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3553                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3554                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3555         }
3556
3557 exit_recover:
3558         ha->adapter_error_count++;
3559
3560         if (test_bit(AF_ONLINE, &ha->flags))
3561                 ha->isp_ops->enable_intrs(ha);
3562
3563         scsi_unblock_requests(ha->host);
3564
3565         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3566         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
3567             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
3568
3569         return status;
3570 }
3571
3572 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
3573 {
3574         struct iscsi_session *sess;
3575         struct ddb_entry *ddb_entry;
3576         struct scsi_qla_host *ha;
3577
3578         sess = cls_session->dd_data;
3579         ddb_entry = sess->dd_data;
3580         ha = ddb_entry->ha;
3581         if (!iscsi_is_session_online(cls_session)) {
3582                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
3583                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3584                                    " unblock session\n", ha->host_no, __func__,
3585                                    ddb_entry->fw_ddb_index);
3586                         iscsi_unblock_session(ddb_entry->sess);
3587                 } else {
3588                         /* Trigger relogin */
3589                         if (ddb_entry->ddb_type == FLASH_DDB) {
3590                                 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
3591                                       test_bit(DF_DISABLE_RELOGIN,
3592                                                &ddb_entry->flags)))
3593                                         qla4xxx_arm_relogin_timer(ddb_entry);
3594                         } else
3595                                 iscsi_session_failure(cls_session->dd_data,
3596                                                       ISCSI_ERR_CONN_FAILED);
3597                 }
3598         }
3599 }
3600
3601 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
3602 {
3603         struct iscsi_session *sess;
3604         struct ddb_entry *ddb_entry;
3605         struct scsi_qla_host *ha;
3606
3607         sess = cls_session->dd_data;
3608         ddb_entry = sess->dd_data;
3609         ha = ddb_entry->ha;
3610         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3611                    " unblock session\n", ha->host_no, __func__,
3612                    ddb_entry->fw_ddb_index);
3613
3614         iscsi_unblock_session(ddb_entry->sess);
3615
3616         /* Start scan target */
3617         if (test_bit(AF_ONLINE, &ha->flags)) {
3618                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3619                            " start scan\n", ha->host_no, __func__,
3620                            ddb_entry->fw_ddb_index);
3621                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
3622         }
3623         return QLA_SUCCESS;
3624 }
3625
3626 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
3627 {
3628         struct iscsi_session *sess;
3629         struct ddb_entry *ddb_entry;
3630         struct scsi_qla_host *ha;
3631         int status = QLA_SUCCESS;
3632
3633         sess = cls_session->dd_data;
3634         ddb_entry = sess->dd_data;
3635         ha = ddb_entry->ha;
3636         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3637                    " unblock user space session\n", ha->host_no, __func__,
3638                    ddb_entry->fw_ddb_index);
3639
3640         if (!iscsi_is_session_online(cls_session)) {
3641                 iscsi_conn_start(ddb_entry->conn);
3642                 iscsi_conn_login_event(ddb_entry->conn,
3643                                        ISCSI_CONN_STATE_LOGGED_IN);
3644         } else {
3645                 ql4_printk(KERN_INFO, ha,
3646                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
3647                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
3648                            cls_session->sid);
3649                 status = QLA_ERROR;
3650         }
3651
3652         return status;
3653 }
3654
3655 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
3656 {
3657         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
3658 }
3659
3660 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3661 {
3662         uint16_t relogin_timer;
3663         struct iscsi_session *sess;
3664         struct ddb_entry *ddb_entry;
3665         struct scsi_qla_host *ha;
3666
3667         sess = cls_sess->dd_data;
3668         ddb_entry = sess->dd_data;
3669         ha = ddb_entry->ha;
3670
3671         relogin_timer = max(ddb_entry->default_relogin_timeout,
3672                             (uint16_t)RELOGIN_TOV);
3673         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
3674
3675         DEBUG2(ql4_printk(KERN_INFO, ha,
3676                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
3677                           ddb_entry->fw_ddb_index, relogin_timer));
3678
3679         qla4xxx_login_flash_ddb(cls_sess);
3680 }
3681
3682 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
3683 {
3684         struct iscsi_session *sess;
3685         struct ddb_entry *ddb_entry;
3686         struct scsi_qla_host *ha;
3687
3688         sess = cls_sess->dd_data;
3689         ddb_entry = sess->dd_data;
3690         ha = ddb_entry->ha;
3691
3692         if (!(ddb_entry->ddb_type == FLASH_DDB))
3693                 return;
3694
3695         if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
3696                 return;
3697
3698         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
3699             !iscsi_is_session_online(cls_sess)) {
3700                 DEBUG2(ql4_printk(KERN_INFO, ha,
3701                                   "relogin issued\n"));
3702                 qla4xxx_relogin_flash_ddb(cls_sess);
3703         }
3704 }
3705
3706 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
3707 {
3708         if (ha->dpc_thread)
3709                 queue_work(ha->dpc_thread, &ha->dpc_work);
3710 }
3711
3712 static struct qla4_work_evt *
3713 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
3714                    enum qla4_work_type type)
3715 {
3716         struct qla4_work_evt *e;
3717         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
3718
3719         e = kzalloc(size, GFP_ATOMIC);
3720         if (!e)
3721                 return NULL;
3722
3723         INIT_LIST_HEAD(&e->list);
3724         e->type = type;
3725         return e;
3726 }
3727
3728 static void qla4xxx_post_work(struct scsi_qla_host *ha,
3729                              struct qla4_work_evt *e)
3730 {
3731         unsigned long flags;
3732
3733         spin_lock_irqsave(&ha->work_lock, flags);
3734         list_add_tail(&e->list, &ha->work_list);
3735         spin_unlock_irqrestore(&ha->work_lock, flags);
3736         qla4xxx_wake_dpc(ha);
3737 }
3738
3739 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
3740                           enum iscsi_host_event_code aen_code,
3741                           uint32_t data_size, uint8_t *data)
3742 {
3743         struct qla4_work_evt *e;
3744
3745         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
3746         if (!e)
3747                 return QLA_ERROR;
3748
3749         e->u.aen.code = aen_code;
3750         e->u.aen.data_size = data_size;
3751         memcpy(e->u.aen.data, data, data_size);
3752
3753         qla4xxx_post_work(ha, e);
3754
3755         return QLA_SUCCESS;
3756 }
3757
3758 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
3759                                uint32_t status, uint32_t pid,
3760                                uint32_t data_size, uint8_t *data)
3761 {
3762         struct qla4_work_evt *e;
3763
3764         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
3765         if (!e)
3766                 return QLA_ERROR;
3767
3768         e->u.ping.status = status;
3769         e->u.ping.pid = pid;
3770         e->u.ping.data_size = data_size;
3771         memcpy(e->u.ping.data, data, data_size);
3772
3773         qla4xxx_post_work(ha, e);
3774
3775         return QLA_SUCCESS;
3776 }
3777
3778 static void qla4xxx_do_work(struct scsi_qla_host *ha)
3779 {
3780         struct qla4_work_evt *e, *tmp;
3781         unsigned long flags;
3782         LIST_HEAD(work);
3783
3784         spin_lock_irqsave(&ha->work_lock, flags);
3785         list_splice_init(&ha->work_list, &work);
3786         spin_unlock_irqrestore(&ha->work_lock, flags);
3787
3788         list_for_each_entry_safe(e, tmp, &work, list) {
3789                 list_del_init(&e->list);
3790
3791                 switch (e->type) {
3792                 case QLA4_EVENT_AEN:
3793                         iscsi_post_host_event(ha->host_no,
3794                                               &qla4xxx_iscsi_transport,
3795                                               e->u.aen.code,
3796                                               e->u.aen.data_size,
3797                                               e->u.aen.data);
3798                         break;
3799                 case QLA4_EVENT_PING_STATUS:
3800                         iscsi_ping_comp_event(ha->host_no,
3801                                               &qla4xxx_iscsi_transport,
3802                                               e->u.ping.status,
3803                                               e->u.ping.pid,
3804                                               e->u.ping.data_size,
3805                                               e->u.ping.data);
3806                         break;
3807                 default:
3808                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
3809                                    "supported", e->type);
3810                 }
3811                 kfree(e);
3812         }
3813 }
3814
3815 /**
3816  * qla4xxx_do_dpc - dpc routine
3817  * @data: in our case pointer to adapter structure
3818  *
3819  * This routine is a task that is schedule by the interrupt handler
3820  * to perform the background processing for interrupts.  We put it
3821  * on a task queue that is consumed whenever the scheduler runs; that's
3822  * so you can do anything (i.e. put the process to sleep etc).  In fact,
3823  * the mid-level tries to sleep when it reaches the driver threshold
3824  * "host->can_queue". This can cause a panic if we were in our interrupt code.
3825  **/
3826 static void qla4xxx_do_dpc(struct work_struct *work)
3827 {
3828         struct scsi_qla_host *ha =
3829                 container_of(work, struct scsi_qla_host, dpc_work);
3830         int status = QLA_ERROR;
3831
3832         DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
3833             "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
3834             ha->host_no, __func__, ha->flags, ha->dpc_flags))
3835
3836         /* Initialization not yet finished. Don't do anything yet. */
3837         if (!test_bit(AF_INIT_DONE, &ha->flags))
3838                 return;
3839
3840         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3841                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
3842                     ha->host_no, __func__, ha->flags));
3843                 return;
3844         }
3845
3846         /* post events to application */
3847         qla4xxx_do_work(ha);
3848
3849         if (is_qla80XX(ha)) {
3850                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
3851                         if (is_qla8032(ha) || is_qla8042(ha)) {
3852                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3853                                            __func__);
3854                                 /* disable pause frame for ISP83xx */
3855                                 qla4_83xx_disable_pause(ha);
3856                         }
3857
3858                         ha->isp_ops->idc_lock(ha);
3859                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
3860                                             QLA8XXX_DEV_FAILED);
3861                         ha->isp_ops->idc_unlock(ha);
3862                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
3863                         qla4_8xxx_device_state_handler(ha);
3864                 }
3865
3866                 if (test_and_clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags))
3867                         qla4_83xx_post_idc_ack(ha);
3868
3869                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3870                         qla4_8xxx_need_qsnt_handler(ha);
3871                 }
3872         }
3873
3874         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
3875             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3876             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3877             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
3878                 if ((is_qla8022(ha) && ql4xdontresethba) ||
3879                     ((is_qla8032(ha) || is_qla8042(ha)) &&
3880                      qla4_83xx_idc_dontreset(ha))) {
3881                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
3882                             ha->host_no, __func__));
3883                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3884                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3885                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3886                         goto dpc_post_reset_ha;
3887                 }
3888                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3889                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
3890                         qla4xxx_recover_adapter(ha);
3891
3892                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3893                         uint8_t wait_time = RESET_INTR_TOV;
3894
3895                         while ((readw(&ha->reg->ctrl_status) &
3896                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
3897                                 if (--wait_time == 0)
3898                                         break;
3899                                 msleep(1000);
3900                         }
3901                         if (wait_time == 0)
3902                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
3903                                               "bit not cleared-- resetting\n",
3904                                               ha->host_no, __func__));
3905                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3906                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
3907                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3908                                 status = qla4xxx_recover_adapter(ha);
3909                         }
3910                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3911                         if (status == QLA_SUCCESS)
3912                                 ha->isp_ops->enable_intrs(ha);
3913                 }
3914         }
3915
3916 dpc_post_reset_ha:
3917         /* ---- process AEN? --- */
3918         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
3919                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
3920
3921         /* ---- Get DHCP IP Address? --- */
3922         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
3923                 qla4xxx_get_dhcp_ip_address(ha);
3924
3925         /* ---- relogin device? --- */
3926         if (adapter_up(ha) &&
3927             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
3928                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
3929         }
3930
3931         /* ---- link change? --- */
3932         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
3933             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
3934                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
3935                         /* ---- link down? --- */
3936                         qla4xxx_mark_all_devices_missing(ha);
3937                 } else {
3938                         /* ---- link up? --- *
3939                          * F/W will auto login to all devices ONLY ONCE after
3940                          * link up during driver initialization and runtime
3941                          * fatal error recovery.  Therefore, the driver must
3942                          * manually relogin to devices when recovering from
3943                          * connection failures, logouts, expired KATO, etc. */
3944                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
3945                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
3946                                 iscsi_host_for_each_session(ha->host,
3947                                                 qla4xxx_login_flash_ddb);
3948                         } else
3949                                 qla4xxx_relogin_all_devices(ha);
3950                 }
3951         }
3952 }
3953
3954 /**
3955  * qla4xxx_free_adapter - release the adapter
3956  * @ha: pointer to adapter structure
3957  **/
3958 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
3959 {
3960         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3961
3962         /* Turn-off interrupts on the card. */
3963         ha->isp_ops->disable_intrs(ha);
3964
3965         if (is_qla40XX(ha)) {
3966                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
3967                        &ha->reg->ctrl_status);
3968                 readl(&ha->reg->ctrl_status);
3969         } else if (is_qla8022(ha)) {
3970                 writel(0, &ha->qla4_82xx_reg->host_int);
3971                 readl(&ha->qla4_82xx_reg->host_int);
3972         } else if (is_qla8032(ha) || is_qla8042(ha)) {
3973                 writel(0, &ha->qla4_83xx_reg->risc_intr);
3974                 readl(&ha->qla4_83xx_reg->risc_intr);
3975         }
3976
3977         /* Remove timer thread, if present */
3978         if (ha->timer_active)
3979                 qla4xxx_stop_timer(ha);
3980
3981         /* Kill the kernel thread for this host */
3982         if (ha->dpc_thread)
3983                 destroy_workqueue(ha->dpc_thread);
3984
3985         /* Kill the kernel thread for this host */
3986         if (ha->task_wq)
3987                 destroy_workqueue(ha->task_wq);
3988
3989         /* Put firmware in known state */
3990         ha->isp_ops->reset_firmware(ha);
3991
3992         if (is_qla80XX(ha)) {
3993                 ha->isp_ops->idc_lock(ha);
3994                 qla4_8xxx_clear_drv_active(ha);
3995                 ha->isp_ops->idc_unlock(ha);
3996         }
3997
3998         /* Detach interrupts */
3999         qla4xxx_free_irqs(ha);
4000
4001         /* free extra memory */
4002         qla4xxx_mem_free(ha);
4003 }
4004
4005 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
4006 {
4007         int status = 0;
4008         unsigned long mem_base, mem_len, db_base, db_len;
4009         struct pci_dev *pdev = ha->pdev;
4010
4011         status = pci_request_regions(pdev, DRIVER_NAME);
4012         if (status) {
4013                 printk(KERN_WARNING
4014                     "scsi(%ld) Failed to reserve PIO regions (%s) "
4015                     "status=%d\n", ha->host_no, pci_name(pdev), status);
4016                 goto iospace_error_exit;
4017         }
4018
4019         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
4020             __func__, pdev->revision));
4021         ha->revision_id = pdev->revision;
4022
4023         /* remap phys address */
4024         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
4025         mem_len = pci_resource_len(pdev, 0);
4026         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
4027             __func__, mem_base, mem_len));
4028
4029         /* mapping of pcibase pointer */
4030         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
4031         if (!ha->nx_pcibase) {
4032                 printk(KERN_ERR
4033                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
4034                 pci_release_regions(ha->pdev);
4035                 goto iospace_error_exit;
4036         }
4037
4038         /* Mapping of IO base pointer, door bell read and write pointer */
4039
4040         /* mapping of IO base pointer */
4041         if (is_qla8022(ha)) {
4042                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
4043                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
4044                                      (ha->pdev->devfn << 11));
4045                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
4046                                     QLA82XX_CAM_RAM_DB2);
4047         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4048                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
4049                                     ((uint8_t *)ha->nx_pcibase);
4050         }
4051
4052         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
4053         db_len = pci_resource_len(pdev, 4);
4054
4055         return 0;
4056 iospace_error_exit:
4057         return -ENOMEM;
4058 }
4059
4060 /***
4061  * qla4xxx_iospace_config - maps registers
4062  * @ha: pointer to adapter structure
4063  *
4064  * This routines maps HBA's registers from the pci address space
4065  * into the kernel virtual address space for memory mapped i/o.
4066  **/
4067 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
4068 {
4069         unsigned long pio, pio_len, pio_flags;
4070         unsigned long mmio, mmio_len, mmio_flags;
4071
4072         pio = pci_resource_start(ha->pdev, 0);
4073         pio_len = pci_resource_len(ha->pdev, 0);
4074         pio_flags = pci_resource_flags(ha->pdev, 0);
4075         if (pio_flags & IORESOURCE_IO) {
4076                 if (pio_len < MIN_IOBASE_LEN) {
4077                         ql4_printk(KERN_WARNING, ha,
4078                                 "Invalid PCI I/O region size\n");
4079                         pio = 0;
4080                 }
4081         } else {
4082                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
4083                 pio = 0;
4084         }
4085
4086         /* Use MMIO operations for all accesses. */
4087         mmio = pci_resource_start(ha->pdev, 1);
4088         mmio_len = pci_resource_len(ha->pdev, 1);
4089         mmio_flags = pci_resource_flags(ha->pdev, 1);
4090
4091         if (!(mmio_flags & IORESOURCE_MEM)) {
4092                 ql4_printk(KERN_ERR, ha,
4093                     "region #0 not an MMIO resource, aborting\n");
4094
4095                 goto iospace_error_exit;
4096         }
4097
4098         if (mmio_len < MIN_IOBASE_LEN) {
4099                 ql4_printk(KERN_ERR, ha,
4100                     "Invalid PCI mem region size, aborting\n");
4101                 goto iospace_error_exit;
4102         }
4103
4104         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
4105                 ql4_printk(KERN_WARNING, ha,
4106                     "Failed to reserve PIO/MMIO regions\n");
4107
4108                 goto iospace_error_exit;
4109         }
4110
4111         ha->pio_address = pio;
4112         ha->pio_length = pio_len;
4113         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
4114         if (!ha->reg) {
4115                 ql4_printk(KERN_ERR, ha,
4116                     "cannot remap MMIO, aborting\n");
4117
4118                 goto iospace_error_exit;
4119         }
4120
4121         return 0;
4122
4123 iospace_error_exit:
4124         return -ENOMEM;
4125 }
4126
4127 static struct isp_operations qla4xxx_isp_ops = {
4128         .iospace_config         = qla4xxx_iospace_config,
4129         .pci_config             = qla4xxx_pci_config,
4130         .disable_intrs          = qla4xxx_disable_intrs,
4131         .enable_intrs           = qla4xxx_enable_intrs,
4132         .start_firmware         = qla4xxx_start_firmware,
4133         .intr_handler           = qla4xxx_intr_handler,
4134         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
4135         .reset_chip             = qla4xxx_soft_reset,
4136         .reset_firmware         = qla4xxx_hw_reset,
4137         .queue_iocb             = qla4xxx_queue_iocb,
4138         .complete_iocb          = qla4xxx_complete_iocb,
4139         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
4140         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
4141         .get_sys_info           = qla4xxx_get_sys_info,
4142         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
4143         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
4144 };
4145
4146 static struct isp_operations qla4_82xx_isp_ops = {
4147         .iospace_config         = qla4_8xxx_iospace_config,
4148         .pci_config             = qla4_8xxx_pci_config,
4149         .disable_intrs          = qla4_82xx_disable_intrs,
4150         .enable_intrs           = qla4_82xx_enable_intrs,
4151         .start_firmware         = qla4_8xxx_load_risc,
4152         .restart_firmware       = qla4_82xx_try_start_fw,
4153         .intr_handler           = qla4_82xx_intr_handler,
4154         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
4155         .need_reset             = qla4_8xxx_need_reset,
4156         .reset_chip             = qla4_82xx_isp_reset,
4157         .reset_firmware         = qla4_8xxx_stop_firmware,
4158         .queue_iocb             = qla4_82xx_queue_iocb,
4159         .complete_iocb          = qla4_82xx_complete_iocb,
4160         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
4161         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
4162         .get_sys_info           = qla4_8xxx_get_sys_info,
4163         .rd_reg_direct          = qla4_82xx_rd_32,
4164         .wr_reg_direct          = qla4_82xx_wr_32,
4165         .rd_reg_indirect        = qla4_82xx_md_rd_32,
4166         .wr_reg_indirect        = qla4_82xx_md_wr_32,
4167         .idc_lock               = qla4_82xx_idc_lock,
4168         .idc_unlock             = qla4_82xx_idc_unlock,
4169         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
4170         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
4171         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
4172 };
4173
4174 static struct isp_operations qla4_83xx_isp_ops = {
4175         .iospace_config         = qla4_8xxx_iospace_config,
4176         .pci_config             = qla4_8xxx_pci_config,
4177         .disable_intrs          = qla4_83xx_disable_intrs,
4178         .enable_intrs           = qla4_83xx_enable_intrs,
4179         .start_firmware         = qla4_8xxx_load_risc,
4180         .restart_firmware       = qla4_83xx_start_firmware,
4181         .intr_handler           = qla4_83xx_intr_handler,
4182         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
4183         .need_reset             = qla4_8xxx_need_reset,
4184         .reset_chip             = qla4_83xx_isp_reset,
4185         .reset_firmware         = qla4_8xxx_stop_firmware,
4186         .queue_iocb             = qla4_83xx_queue_iocb,
4187         .complete_iocb          = qla4_83xx_complete_iocb,
4188         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
4189         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
4190         .get_sys_info           = qla4_8xxx_get_sys_info,
4191         .rd_reg_direct          = qla4_83xx_rd_reg,
4192         .wr_reg_direct          = qla4_83xx_wr_reg,
4193         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
4194         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
4195         .idc_lock               = qla4_83xx_drv_lock,
4196         .idc_unlock             = qla4_83xx_drv_unlock,
4197         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
4198         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
4199         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
4200 };
4201
4202 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
4203 {
4204         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
4205 }
4206
4207 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
4208 {
4209         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
4210 }
4211
4212 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
4213 {
4214         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
4215 }
4216
4217 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
4218 {
4219         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
4220 }
4221
4222 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
4223 {
4224         struct scsi_qla_host *ha = data;
4225         char *str = buf;
4226         int rc;
4227
4228         switch (type) {
4229         case ISCSI_BOOT_ETH_FLAGS:
4230                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
4231                 break;
4232         case ISCSI_BOOT_ETH_INDEX:
4233                 rc = sprintf(str, "0\n");
4234                 break;
4235         case ISCSI_BOOT_ETH_MAC:
4236                 rc = sysfs_format_mac(str, ha->my_mac,
4237                                       MAC_ADDR_LEN);
4238                 break;
4239         default:
4240                 rc = -ENOSYS;
4241                 break;
4242         }
4243         return rc;
4244 }
4245
4246 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
4247 {
4248         int rc;
4249
4250         switch (type) {
4251         case ISCSI_BOOT_ETH_FLAGS:
4252         case ISCSI_BOOT_ETH_MAC:
4253         case ISCSI_BOOT_ETH_INDEX:
4254                 rc = S_IRUGO;
4255                 break;
4256         default:
4257                 rc = 0;
4258                 break;
4259         }
4260         return rc;
4261 }
4262
4263 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
4264 {
4265         struct scsi_qla_host *ha = data;
4266         char *str = buf;
4267         int rc;
4268
4269         switch (type) {
4270         case ISCSI_BOOT_INI_INITIATOR_NAME:
4271                 rc = sprintf(str, "%s\n", ha->name_string);
4272                 break;
4273         default:
4274                 rc = -ENOSYS;
4275                 break;
4276         }
4277         return rc;
4278 }
4279
4280 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
4281 {
4282         int rc;
4283
4284         switch (type) {
4285         case ISCSI_BOOT_INI_INITIATOR_NAME:
4286                 rc = S_IRUGO;
4287                 break;
4288         default:
4289                 rc = 0;
4290                 break;
4291         }
4292         return rc;
4293 }
4294
4295 static ssize_t
4296 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
4297                            char *buf)
4298 {
4299         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4300         char *str = buf;
4301         int rc;
4302
4303         switch (type) {
4304         case ISCSI_BOOT_TGT_NAME:
4305                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
4306                 break;
4307         case ISCSI_BOOT_TGT_IP_ADDR:
4308                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
4309                         rc = sprintf(buf, "%pI4\n",
4310                                      &boot_conn->dest_ipaddr.ip_address);
4311                 else
4312                         rc = sprintf(str, "%pI6\n",
4313                                      &boot_conn->dest_ipaddr.ip_address);
4314                 break;
4315         case ISCSI_BOOT_TGT_PORT:
4316                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
4317                 break;
4318         case ISCSI_BOOT_TGT_CHAP_NAME:
4319                 rc = sprintf(str,  "%.*s\n",
4320                              boot_conn->chap.target_chap_name_length,
4321                              (char *)&boot_conn->chap.target_chap_name);
4322                 break;
4323         case ISCSI_BOOT_TGT_CHAP_SECRET:
4324                 rc = sprintf(str,  "%.*s\n",
4325                              boot_conn->chap.target_secret_length,
4326                              (char *)&boot_conn->chap.target_secret);
4327                 break;
4328         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4329                 rc = sprintf(str,  "%.*s\n",
4330                              boot_conn->chap.intr_chap_name_length,
4331                              (char *)&boot_conn->chap.intr_chap_name);
4332                 break;
4333         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4334                 rc = sprintf(str,  "%.*s\n",
4335                              boot_conn->chap.intr_secret_length,
4336                              (char *)&boot_conn->chap.intr_secret);
4337                 break;
4338         case ISCSI_BOOT_TGT_FLAGS:
4339                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
4340                 break;
4341         case ISCSI_BOOT_TGT_NIC_ASSOC:
4342                 rc = sprintf(str, "0\n");
4343                 break;
4344         default:
4345                 rc = -ENOSYS;
4346                 break;
4347         }
4348         return rc;
4349 }
4350
4351 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
4352 {
4353         struct scsi_qla_host *ha = data;
4354         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
4355
4356         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
4357 }
4358
4359 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
4360 {
4361         struct scsi_qla_host *ha = data;
4362         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
4363
4364         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
4365 }
4366
4367 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
4368 {
4369         int rc;
4370
4371         switch (type) {
4372         case ISCSI_BOOT_TGT_NAME:
4373         case ISCSI_BOOT_TGT_IP_ADDR:
4374         case ISCSI_BOOT_TGT_PORT:
4375         case ISCSI_BOOT_TGT_CHAP_NAME:
4376         case ISCSI_BOOT_TGT_CHAP_SECRET:
4377         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4378         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4379         case ISCSI_BOOT_TGT_NIC_ASSOC:
4380         case ISCSI_BOOT_TGT_FLAGS:
4381                 rc = S_IRUGO;
4382                 break;
4383         default:
4384                 rc = 0;
4385                 break;
4386         }
4387         return rc;
4388 }
4389
4390 static void qla4xxx_boot_release(void *data)
4391 {
4392         struct scsi_qla_host *ha = data;
4393
4394         scsi_host_put(ha->host);
4395 }
4396
4397 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
4398 {
4399         dma_addr_t buf_dma;
4400         uint32_t addr, pri_addr, sec_addr;
4401         uint32_t offset;
4402         uint16_t func_num;
4403         uint8_t val;
4404         uint8_t *buf = NULL;
4405         size_t size = 13 * sizeof(uint8_t);
4406         int ret = QLA_SUCCESS;
4407
4408         func_num = PCI_FUNC(ha->pdev->devfn);
4409
4410         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
4411                    __func__, ha->pdev->device, func_num);
4412
4413         if (is_qla40XX(ha)) {
4414                 if (func_num == 1) {
4415                         addr = NVRAM_PORT0_BOOT_MODE;
4416                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
4417                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
4418                 } else if (func_num == 3) {
4419                         addr = NVRAM_PORT1_BOOT_MODE;
4420                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
4421                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
4422                 } else {
4423                         ret = QLA_ERROR;
4424                         goto exit_boot_info;
4425                 }
4426
4427                 /* Check Boot Mode */
4428                 val = rd_nvram_byte(ha, addr);
4429                 if (!(val & 0x07)) {
4430                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
4431                                           "options : 0x%x\n", __func__, val));
4432                         ret = QLA_ERROR;
4433                         goto exit_boot_info;
4434                 }
4435
4436                 /* get primary valid target index */
4437                 val = rd_nvram_byte(ha, pri_addr);
4438                 if (val & BIT_7)
4439                         ddb_index[0] = (val & 0x7f);
4440
4441                 /* get secondary valid target index */
4442                 val = rd_nvram_byte(ha, sec_addr);
4443                 if (val & BIT_7)
4444                         ddb_index[1] = (val & 0x7f);
4445
4446         } else if (is_qla80XX(ha)) {
4447                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
4448                                          &buf_dma, GFP_KERNEL);
4449                 if (!buf) {
4450                         DEBUG2(ql4_printk(KERN_ERR, ha,
4451                                           "%s: Unable to allocate dma buffer\n",
4452                                            __func__));
4453                         ret = QLA_ERROR;
4454                         goto exit_boot_info;
4455                 }
4456
4457                 if (ha->port_num == 0)
4458                         offset = BOOT_PARAM_OFFSET_PORT0;
4459                 else if (ha->port_num == 1)
4460                         offset = BOOT_PARAM_OFFSET_PORT1;
4461                 else {
4462                         ret = QLA_ERROR;
4463                         goto exit_boot_info_free;
4464                 }
4465                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
4466                        offset;
4467                 if (qla4xxx_get_flash(ha, buf_dma, addr,
4468                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
4469                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
4470                                           " failed\n", ha->host_no, __func__));
4471                         ret = QLA_ERROR;
4472                         goto exit_boot_info_free;
4473                 }
4474                 /* Check Boot Mode */
4475                 if (!(buf[1] & 0x07)) {
4476                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
4477                                           " : 0x%x\n", buf[1]));
4478                         ret = QLA_ERROR;
4479                         goto exit_boot_info_free;
4480                 }
4481
4482                 /* get primary valid target index */
4483                 if (buf[2] & BIT_7)
4484                         ddb_index[0] = buf[2] & 0x7f;
4485
4486                 /* get secondary valid target index */
4487                 if (buf[11] & BIT_7)
4488                         ddb_index[1] = buf[11] & 0x7f;
4489         } else {
4490                 ret = QLA_ERROR;
4491                 goto exit_boot_info;
4492         }
4493
4494         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
4495                           " target ID %d\n", __func__, ddb_index[0],
4496                           ddb_index[1]));
4497
4498 exit_boot_info_free:
4499         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
4500 exit_boot_info:
4501         ha->pri_ddb_idx = ddb_index[0];
4502         ha->sec_ddb_idx = ddb_index[1];
4503         return ret;
4504 }
4505
4506 /**
4507  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
4508  * @ha: pointer to adapter structure
4509  * @username: CHAP username to be returned
4510  * @password: CHAP password to be returned
4511  *
4512  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
4513  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
4514  * So from the CHAP cache find the first BIDI CHAP entry and set it
4515  * to the boot record in sysfs.
4516  **/
4517 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
4518                             char *password)
4519 {
4520         int i, ret = -EINVAL;
4521         int max_chap_entries = 0;
4522         struct ql4_chap_table *chap_table;
4523
4524         if (is_qla80XX(ha))
4525                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
4526                                                 sizeof(struct ql4_chap_table);
4527         else
4528                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
4529
4530         if (!ha->chap_list) {
4531                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
4532                 return ret;
4533         }
4534
4535         mutex_lock(&ha->chap_sem);
4536         for (i = 0; i < max_chap_entries; i++) {
4537                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
4538                 if (chap_table->cookie !=
4539                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
4540                         continue;
4541                 }
4542
4543                 if (chap_table->flags & BIT_7) /* local */
4544                         continue;
4545
4546                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
4547                         continue;
4548
4549                 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
4550                 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
4551                 ret = 0;
4552                 break;
4553         }
4554         mutex_unlock(&ha->chap_sem);
4555
4556         return ret;
4557 }
4558
4559
4560 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
4561                                    struct ql4_boot_session_info *boot_sess,
4562                                    uint16_t ddb_index)
4563 {
4564         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4565         struct dev_db_entry *fw_ddb_entry;
4566         dma_addr_t fw_ddb_entry_dma;
4567         uint16_t idx;
4568         uint16_t options;
4569         int ret = QLA_SUCCESS;
4570
4571         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4572                                           &fw_ddb_entry_dma, GFP_KERNEL);
4573         if (!fw_ddb_entry) {
4574                 DEBUG2(ql4_printk(KERN_ERR, ha,
4575                                   "%s: Unable to allocate dma buffer.\n",
4576                                   __func__));
4577                 ret = QLA_ERROR;
4578                 return ret;
4579         }
4580
4581         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
4582                                    fw_ddb_entry_dma, ddb_index)) {
4583                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
4584                                   "index [%d]\n", __func__, ddb_index));
4585                 ret = QLA_ERROR;
4586                 goto exit_boot_target;
4587         }
4588
4589         /* Update target name and IP from DDB */
4590         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
4591                min(sizeof(boot_sess->target_name),
4592                    sizeof(fw_ddb_entry->iscsi_name)));
4593
4594         options = le16_to_cpu(fw_ddb_entry->options);
4595         if (options & DDB_OPT_IPV6_DEVICE) {
4596                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4597                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
4598         } else {
4599                 boot_conn->dest_ipaddr.ip_type = 0x1;
4600                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4601                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
4602         }
4603
4604         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
4605
4606         /* update chap information */
4607         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4608
4609         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
4610
4611                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
4612
4613                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
4614                                        target_chap_name,
4615                                        (char *)&boot_conn->chap.target_secret,
4616                                        idx);
4617                 if (ret) {
4618                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
4619                         ret = QLA_ERROR;
4620                         goto exit_boot_target;
4621                 }
4622
4623                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4624                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4625         }
4626
4627         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4628
4629                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
4630
4631                 ret = qla4xxx_get_bidi_chap(ha,
4632                                     (char *)&boot_conn->chap.intr_chap_name,
4633                                     (char *)&boot_conn->chap.intr_secret);
4634
4635                 if (ret) {
4636                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
4637                         ret = QLA_ERROR;
4638                         goto exit_boot_target;
4639                 }
4640
4641                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4642                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4643         }
4644
4645 exit_boot_target:
4646         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4647                           fw_ddb_entry, fw_ddb_entry_dma);
4648         return ret;
4649 }
4650
4651 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
4652 {
4653         uint16_t ddb_index[2];
4654         int ret = QLA_ERROR;
4655         int rval;
4656
4657         memset(ddb_index, 0, sizeof(ddb_index));
4658         ddb_index[0] = 0xffff;
4659         ddb_index[1] = 0xffff;
4660         ret = get_fw_boot_info(ha, ddb_index);
4661         if (ret != QLA_SUCCESS) {
4662                 DEBUG2(ql4_printk(KERN_INFO, ha,
4663                                 "%s: No boot target configured.\n", __func__));
4664                 return ret;
4665         }
4666
4667         if (ql4xdisablesysfsboot)
4668                 return QLA_SUCCESS;
4669
4670         if (ddb_index[0] == 0xffff)
4671                 goto sec_target;
4672
4673         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
4674                                       ddb_index[0]);
4675         if (rval != QLA_SUCCESS) {
4676                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
4677                                   "configured\n", __func__));
4678         } else
4679                 ret = QLA_SUCCESS;
4680
4681 sec_target:
4682         if (ddb_index[1] == 0xffff)
4683                 goto exit_get_boot_info;
4684
4685         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
4686                                       ddb_index[1]);
4687         if (rval != QLA_SUCCESS) {
4688                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
4689                                   " configured\n", __func__));
4690         } else
4691                 ret = QLA_SUCCESS;
4692
4693 exit_get_boot_info:
4694         return ret;
4695 }
4696
4697 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
4698 {
4699         struct iscsi_boot_kobj *boot_kobj;
4700
4701         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
4702                 return QLA_ERROR;
4703
4704         if (ql4xdisablesysfsboot) {
4705                 ql4_printk(KERN_INFO, ha,
4706                            "%s: syfsboot disabled - driver will trigger login "
4707                            "and publish session for discovery .\n", __func__);
4708                 return QLA_SUCCESS;
4709         }
4710
4711
4712         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
4713         if (!ha->boot_kset)
4714                 goto kset_free;
4715
4716         if (!scsi_host_get(ha->host))
4717                 goto kset_free;
4718         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
4719                                              qla4xxx_show_boot_tgt_pri_info,
4720                                              qla4xxx_tgt_get_attr_visibility,
4721                                              qla4xxx_boot_release);
4722         if (!boot_kobj)
4723                 goto put_host;
4724
4725         if (!scsi_host_get(ha->host))
4726                 goto kset_free;
4727         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
4728                                              qla4xxx_show_boot_tgt_sec_info,
4729                                              qla4xxx_tgt_get_attr_visibility,
4730                                              qla4xxx_boot_release);
4731         if (!boot_kobj)
4732                 goto put_host;
4733
4734         if (!scsi_host_get(ha->host))
4735                 goto kset_free;
4736         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
4737                                                qla4xxx_show_boot_ini_info,
4738                                                qla4xxx_ini_get_attr_visibility,
4739                                                qla4xxx_boot_release);
4740         if (!boot_kobj)
4741                 goto put_host;
4742
4743         if (!scsi_host_get(ha->host))
4744                 goto kset_free;
4745         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
4746                                                qla4xxx_show_boot_eth_info,
4747                                                qla4xxx_eth_get_attr_visibility,
4748                                                qla4xxx_boot_release);
4749         if (!boot_kobj)
4750                 goto put_host;
4751
4752         return QLA_SUCCESS;
4753
4754 put_host:
4755         scsi_host_put(ha->host);
4756 kset_free:
4757         iscsi_boot_destroy_kset(ha->boot_kset);
4758         return -ENOMEM;
4759 }
4760
4761
4762 /**
4763  * qla4xxx_create chap_list - Create CHAP list from FLASH
4764  * @ha: pointer to adapter structure
4765  *
4766  * Read flash and make a list of CHAP entries, during login when a CHAP entry
4767  * is received, it will be checked in this list. If entry exist then the CHAP
4768  * entry index is set in the DDB. If CHAP entry does not exist in this list
4769  * then a new entry is added in FLASH in CHAP table and the index obtained is
4770  * used in the DDB.
4771  **/
4772 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
4773 {
4774         int rval = 0;
4775         uint8_t *chap_flash_data = NULL;
4776         uint32_t offset;
4777         dma_addr_t chap_dma;
4778         uint32_t chap_size = 0;
4779
4780         if (is_qla40XX(ha))
4781                 chap_size = MAX_CHAP_ENTRIES_40XX  *
4782                                         sizeof(struct ql4_chap_table);
4783         else    /* Single region contains CHAP info for both
4784                  * ports which is divided into half for each port.
4785                  */
4786                 chap_size = ha->hw.flt_chap_size / 2;
4787
4788         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
4789                                           &chap_dma, GFP_KERNEL);
4790         if (!chap_flash_data) {
4791                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
4792                 return;
4793         }
4794         if (is_qla40XX(ha))
4795                 offset = FLASH_CHAP_OFFSET;
4796         else {
4797                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
4798                 if (ha->port_num == 1)
4799                         offset += chap_size;
4800         }
4801
4802         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
4803         if (rval != QLA_SUCCESS)
4804                 goto exit_chap_list;
4805
4806         if (ha->chap_list == NULL)
4807                 ha->chap_list = vmalloc(chap_size);
4808         if (ha->chap_list == NULL) {
4809                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
4810                 goto exit_chap_list;
4811         }
4812
4813         memcpy(ha->chap_list, chap_flash_data, chap_size);
4814
4815 exit_chap_list:
4816         dma_free_coherent(&ha->pdev->dev, chap_size,
4817                         chap_flash_data, chap_dma);
4818 }
4819
4820 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
4821                                   struct ql4_tuple_ddb *tddb)
4822 {
4823         struct scsi_qla_host *ha;
4824         struct iscsi_cls_session *cls_sess;
4825         struct iscsi_cls_conn *cls_conn;
4826         struct iscsi_session *sess;
4827         struct iscsi_conn *conn;
4828
4829         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
4830         ha = ddb_entry->ha;
4831         cls_sess = ddb_entry->sess;
4832         sess = cls_sess->dd_data;
4833         cls_conn = ddb_entry->conn;
4834         conn = cls_conn->dd_data;
4835
4836         tddb->tpgt = sess->tpgt;
4837         tddb->port = conn->persistent_port;
4838         strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
4839         strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
4840 }
4841
4842 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
4843                                       struct ql4_tuple_ddb *tddb,
4844                                       uint8_t *flash_isid)
4845 {
4846         uint16_t options = 0;
4847
4848         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
4849         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
4850                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
4851
4852         options = le16_to_cpu(fw_ddb_entry->options);
4853         if (options & DDB_OPT_IPV6_DEVICE)
4854                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
4855         else
4856                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
4857
4858         tddb->port = le16_to_cpu(fw_ddb_entry->port);
4859
4860         if (flash_isid == NULL)
4861                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
4862                        sizeof(tddb->isid));
4863         else
4864                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
4865 }
4866
4867 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
4868                                      struct ql4_tuple_ddb *old_tddb,
4869                                      struct ql4_tuple_ddb *new_tddb,
4870                                      uint8_t is_isid_compare)
4871 {
4872         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4873                 return QLA_ERROR;
4874
4875         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
4876                 return QLA_ERROR;
4877
4878         if (old_tddb->port != new_tddb->port)
4879                 return QLA_ERROR;
4880
4881         /* For multi sessions, driver generates the ISID, so do not compare
4882          * ISID in reset path since it would be a comparison between the
4883          * driver generated ISID and firmware generated ISID. This could
4884          * lead to adding duplicated DDBs in the list as driver generated
4885          * ISID would not match firmware generated ISID.
4886          */
4887         if (is_isid_compare) {
4888                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
4889                         "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
4890                         __func__, old_tddb->isid[5], old_tddb->isid[4],
4891                         old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
4892                         old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
4893                         new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
4894                         new_tddb->isid[0]));
4895
4896                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4897                            sizeof(old_tddb->isid)))
4898                         return QLA_ERROR;
4899         }
4900
4901         DEBUG2(ql4_printk(KERN_INFO, ha,
4902                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
4903                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
4904                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
4905                           new_tddb->ip_addr, new_tddb->iscsi_name));
4906
4907         return QLA_SUCCESS;
4908 }
4909
4910 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
4911                                      struct dev_db_entry *fw_ddb_entry)
4912 {
4913         struct ddb_entry *ddb_entry;
4914         struct ql4_tuple_ddb *fw_tddb = NULL;
4915         struct ql4_tuple_ddb *tmp_tddb = NULL;
4916         int idx;
4917         int ret = QLA_ERROR;
4918
4919         fw_tddb = vzalloc(sizeof(*fw_tddb));
4920         if (!fw_tddb) {
4921                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4922                                   "Memory Allocation failed.\n"));
4923                 ret = QLA_SUCCESS;
4924                 goto exit_check;
4925         }
4926
4927         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4928         if (!tmp_tddb) {
4929                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4930                                   "Memory Allocation failed.\n"));
4931                 ret = QLA_SUCCESS;
4932                 goto exit_check;
4933         }
4934
4935         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4936
4937         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4938                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4939                 if (ddb_entry == NULL)
4940                         continue;
4941
4942                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
4943                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
4944                         ret = QLA_SUCCESS; /* found */
4945                         goto exit_check;
4946                 }
4947         }
4948
4949 exit_check:
4950         if (fw_tddb)
4951                 vfree(fw_tddb);
4952         if (tmp_tddb)
4953                 vfree(tmp_tddb);
4954         return ret;
4955 }
4956
4957 /**
4958  * qla4xxx_check_existing_isid - check if target with same isid exist
4959  *                               in target list
4960  * @list_nt: list of target
4961  * @isid: isid to check
4962  *
4963  * This routine return QLA_SUCCESS if target with same isid exist
4964  **/
4965 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
4966 {
4967         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4968         struct dev_db_entry *fw_ddb_entry;
4969
4970         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4971                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
4972
4973                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
4974                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
4975                         return QLA_SUCCESS;
4976                 }
4977         }
4978         return QLA_ERROR;
4979 }
4980
4981 /**
4982  * qla4xxx_update_isid - compare ddbs and updated isid
4983  * @ha: Pointer to host adapter structure.
4984  * @list_nt: list of nt target
4985  * @fw_ddb_entry: firmware ddb entry
4986  *
4987  * This routine update isid if ddbs have same iqn, same isid and
4988  * different IP addr.
4989  * Return QLA_SUCCESS if isid is updated.
4990  **/
4991 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
4992                                struct list_head *list_nt,
4993                                struct dev_db_entry *fw_ddb_entry)
4994 {
4995         uint8_t base_value, i;
4996
4997         base_value = fw_ddb_entry->isid[1] & 0x1f;
4998         for (i = 0; i < 8; i++) {
4999                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
5000                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
5001                         break;
5002         }
5003
5004         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
5005                 return QLA_ERROR;
5006
5007         return QLA_SUCCESS;
5008 }
5009
5010 /**
5011  * qla4xxx_should_update_isid - check if isid need to update
5012  * @ha: Pointer to host adapter structure.
5013  * @old_tddb: ddb tuple
5014  * @new_tddb: ddb tuple
5015  *
5016  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
5017  * same isid
5018  **/
5019 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
5020                                       struct ql4_tuple_ddb *old_tddb,
5021                                       struct ql4_tuple_ddb *new_tddb)
5022 {
5023         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
5024                 /* Same ip */
5025                 if (old_tddb->port == new_tddb->port)
5026                         return QLA_ERROR;
5027         }
5028
5029         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
5030                 /* different iqn */
5031                 return QLA_ERROR;
5032
5033         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
5034                    sizeof(old_tddb->isid)))
5035                 /* different isid */
5036                 return QLA_ERROR;
5037
5038         return QLA_SUCCESS;
5039 }
5040
5041 /**
5042  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
5043  * @ha: Pointer to host adapter structure.
5044  * @list_nt: list of nt target.
5045  * @fw_ddb_entry: firmware ddb entry.
5046  *
5047  * This routine check if fw_ddb_entry already exists in list_nt to avoid
5048  * duplicate ddb in list_nt.
5049  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
5050  * Note: This function also update isid of DDB if required.
5051  **/
5052
5053 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
5054                                        struct list_head *list_nt,
5055                                        struct dev_db_entry *fw_ddb_entry)
5056 {
5057         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
5058         struct ql4_tuple_ddb *fw_tddb = NULL;
5059         struct ql4_tuple_ddb *tmp_tddb = NULL;
5060         int rval, ret = QLA_ERROR;
5061
5062         fw_tddb = vzalloc(sizeof(*fw_tddb));
5063         if (!fw_tddb) {
5064                 DEBUG2(ql4_printk(KERN_WARNING, ha,
5065                                   "Memory Allocation failed.\n"));
5066                 ret = QLA_SUCCESS;
5067                 goto exit_check;
5068         }
5069
5070         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
5071         if (!tmp_tddb) {
5072                 DEBUG2(ql4_printk(KERN_WARNING, ha,
5073                                   "Memory Allocation failed.\n"));
5074                 ret = QLA_SUCCESS;
5075                 goto exit_check;
5076         }
5077
5078         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
5079
5080         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
5081                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
5082                                           nt_ddb_idx->flash_isid);
5083                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
5084                 /* found duplicate ddb */
5085                 if (ret == QLA_SUCCESS)
5086                         goto exit_check;
5087         }
5088
5089         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
5090                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
5091
5092                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
5093                 if (ret == QLA_SUCCESS) {
5094                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
5095                         if (rval == QLA_SUCCESS)
5096                                 ret = QLA_ERROR;
5097                         else
5098                                 ret = QLA_SUCCESS;
5099
5100                         goto exit_check;
5101                 }
5102         }
5103
5104 exit_check:
5105         if (fw_tddb)
5106                 vfree(fw_tddb);
5107         if (tmp_tddb)
5108                 vfree(tmp_tddb);
5109         return ret;
5110 }
5111
5112 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
5113 {
5114         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
5115
5116         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
5117                 list_del_init(&ddb_idx->list);
5118                 vfree(ddb_idx);
5119         }
5120 }
5121
5122 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
5123                                         struct dev_db_entry *fw_ddb_entry)
5124 {
5125         struct iscsi_endpoint *ep;
5126         struct sockaddr_in *addr;
5127         struct sockaddr_in6 *addr6;
5128         struct sockaddr *t_addr;
5129         struct sockaddr_storage *dst_addr;
5130         char *ip;
5131
5132         /* TODO: need to destroy on unload iscsi_endpoint*/
5133         dst_addr = vmalloc(sizeof(*dst_addr));
5134         if (!dst_addr)
5135                 return NULL;
5136
5137         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
5138                 t_addr = (struct sockaddr *)dst_addr;
5139                 t_addr->sa_family = AF_INET6;
5140                 addr6 = (struct sockaddr_in6 *)dst_addr;
5141                 ip = (char *)&addr6->sin6_addr;
5142                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
5143                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
5144
5145         } else {
5146                 t_addr = (struct sockaddr *)dst_addr;
5147                 t_addr->sa_family = AF_INET;
5148                 addr = (struct sockaddr_in *)dst_addr;
5149                 ip = (char *)&addr->sin_addr;
5150                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
5151                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
5152         }
5153
5154         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
5155         vfree(dst_addr);
5156         return ep;
5157 }
5158
5159 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
5160 {
5161         if (ql4xdisablesysfsboot)
5162                 return QLA_SUCCESS;
5163         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
5164                 return QLA_ERROR;
5165         return QLA_SUCCESS;
5166 }
5167
5168 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
5169                                           struct ddb_entry *ddb_entry,
5170                                           uint16_t idx)
5171 {
5172         uint16_t def_timeout;
5173
5174         ddb_entry->ddb_type = FLASH_DDB;
5175         ddb_entry->fw_ddb_index = INVALID_ENTRY;
5176         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
5177         ddb_entry->ha = ha;
5178         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
5179         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
5180
5181         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
5182         atomic_set(&ddb_entry->relogin_timer, 0);
5183         atomic_set(&ddb_entry->relogin_retry_count, 0);
5184         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
5185         ddb_entry->default_relogin_timeout =
5186                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
5187                 def_timeout : LOGIN_TOV;
5188         ddb_entry->default_time2wait =
5189                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
5190
5191         if (ql4xdisablesysfsboot &&
5192             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
5193                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
5194 }
5195
5196 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
5197 {
5198         uint32_t idx = 0;
5199         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
5200         uint32_t sts[MBOX_REG_COUNT];
5201         uint32_t ip_state;
5202         unsigned long wtime;
5203         int ret;
5204
5205         wtime = jiffies + (HZ * IP_CONFIG_TOV);
5206         do {
5207                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
5208                         if (ip_idx[idx] == -1)
5209                                 continue;
5210
5211                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
5212
5213                         if (ret == QLA_ERROR) {
5214                                 ip_idx[idx] = -1;
5215                                 continue;
5216                         }
5217
5218                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
5219
5220                         DEBUG2(ql4_printk(KERN_INFO, ha,
5221                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
5222                                           ip_idx[idx], ip_state));
5223                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
5224                             ip_state == IP_ADDRSTATE_INVALID ||
5225                             ip_state == IP_ADDRSTATE_PREFERRED ||
5226                             ip_state == IP_ADDRSTATE_DEPRICATED ||
5227                             ip_state == IP_ADDRSTATE_DISABLING)
5228                                 ip_idx[idx] = -1;
5229                 }
5230
5231                 /* Break if all IP states checked */
5232                 if ((ip_idx[0] == -1) &&
5233                     (ip_idx[1] == -1) &&
5234                     (ip_idx[2] == -1) &&
5235                     (ip_idx[3] == -1))
5236                         break;
5237                 schedule_timeout_uninterruptible(HZ);
5238         } while (time_after(wtime, jiffies));
5239 }
5240
5241 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
5242                                   struct list_head *list_st)
5243 {
5244         struct qla_ddb_index  *st_ddb_idx;
5245         int max_ddbs;
5246         int fw_idx_size;
5247         struct dev_db_entry *fw_ddb_entry;
5248         dma_addr_t fw_ddb_dma;
5249         int ret;
5250         uint32_t idx = 0, next_idx = 0;
5251         uint32_t state = 0, conn_err = 0;
5252         uint16_t conn_id = 0;
5253
5254         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5255                                       &fw_ddb_dma);
5256         if (fw_ddb_entry == NULL) {
5257                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5258                 goto exit_st_list;
5259         }
5260
5261         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5262                                      MAX_DEV_DB_ENTRIES;
5263         fw_idx_size = sizeof(struct qla_ddb_index);
5264
5265         for (idx = 0; idx < max_ddbs; idx = next_idx) {
5266                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5267                                               NULL, &next_idx, &state,
5268                                               &conn_err, NULL, &conn_id);
5269                 if (ret == QLA_ERROR)
5270                         break;
5271
5272                 /* Ignore DDB if invalid state (unassigned) */
5273                 if (state == DDB_DS_UNASSIGNED)
5274                         goto continue_next_st;
5275
5276                 /* Check if ST, add to the list_st */
5277                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
5278                         goto continue_next_st;
5279
5280                 st_ddb_idx = vzalloc(fw_idx_size);
5281                 if (!st_ddb_idx)
5282                         break;
5283
5284                 st_ddb_idx->fw_ddb_idx = idx;
5285
5286                 list_add_tail(&st_ddb_idx->list, list_st);
5287 continue_next_st:
5288                 if (next_idx == 0)
5289                         break;
5290         }
5291
5292 exit_st_list:
5293         if (fw_ddb_entry)
5294                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5295 }
5296
5297 /**
5298  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
5299  * @ha: pointer to adapter structure
5300  * @list_ddb: List from which failed ddb to be removed
5301  *
5302  * Iterate over the list of DDBs and find and remove DDBs that are either in
5303  * no connection active state or failed state
5304  **/
5305 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
5306                                       struct list_head *list_ddb)
5307 {
5308         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
5309         uint32_t next_idx = 0;
5310         uint32_t state = 0, conn_err = 0;
5311         int ret;
5312
5313         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
5314                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
5315                                               NULL, 0, NULL, &next_idx, &state,
5316                                               &conn_err, NULL, NULL);
5317                 if (ret == QLA_ERROR)
5318                         continue;
5319
5320                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
5321                     state == DDB_DS_SESSION_FAILED) {
5322                         list_del_init(&ddb_idx->list);
5323                         vfree(ddb_idx);
5324                 }
5325         }
5326 }
5327
5328 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
5329                                    struct dev_db_entry *fw_ddb_entry,
5330                                    int is_reset, uint16_t idx)
5331 {
5332         struct iscsi_cls_session *cls_sess;
5333         struct iscsi_session *sess;
5334         struct iscsi_cls_conn *cls_conn;
5335         struct iscsi_endpoint *ep;
5336         uint16_t cmds_max = 32;
5337         uint16_t conn_id = 0;
5338         uint32_t initial_cmdsn = 0;
5339         int ret = QLA_SUCCESS;
5340
5341         struct ddb_entry *ddb_entry = NULL;
5342
5343         /* Create session object, with INVALID_ENTRY,
5344          * the targer_id would get set when we issue the login
5345          */
5346         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
5347                                        cmds_max, sizeof(struct ddb_entry),
5348                                        sizeof(struct ql4_task_data),
5349                                        initial_cmdsn, INVALID_ENTRY);
5350         if (!cls_sess) {
5351                 ret = QLA_ERROR;
5352                 goto exit_setup;
5353         }
5354
5355         /*
5356          * so calling module_put function to decrement the
5357          * reference count.
5358          **/
5359         module_put(qla4xxx_iscsi_transport.owner);
5360         sess = cls_sess->dd_data;
5361         ddb_entry = sess->dd_data;
5362         ddb_entry->sess = cls_sess;
5363
5364         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
5365         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
5366                sizeof(struct dev_db_entry));
5367
5368         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
5369
5370         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
5371
5372         if (!cls_conn) {
5373                 ret = QLA_ERROR;
5374                 goto exit_setup;
5375         }
5376
5377         ddb_entry->conn = cls_conn;
5378
5379         /* Setup ep, for displaying attributes in sysfs */
5380         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
5381         if (ep) {
5382                 ep->conn = cls_conn;
5383                 cls_conn->ep = ep;
5384         } else {
5385                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
5386                 ret = QLA_ERROR;
5387                 goto exit_setup;
5388         }
5389
5390         /* Update sess/conn params */
5391         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
5392
5393         if (is_reset == RESET_ADAPTER) {
5394                 iscsi_block_session(cls_sess);
5395                 /* Use the relogin path to discover new devices
5396                  *  by short-circuting the logic of setting
5397                  *  timer to relogin - instead set the flags
5398                  *  to initiate login right away.
5399                  */
5400                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
5401                 set_bit(DF_RELOGIN, &ddb_entry->flags);
5402         }
5403
5404 exit_setup:
5405         return ret;
5406 }
5407
5408 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
5409                                   struct list_head *list_nt, int is_reset)
5410 {
5411         struct dev_db_entry *fw_ddb_entry;
5412         dma_addr_t fw_ddb_dma;
5413         int max_ddbs;
5414         int fw_idx_size;
5415         int ret;
5416         uint32_t idx = 0, next_idx = 0;
5417         uint32_t state = 0, conn_err = 0;
5418         uint16_t conn_id = 0;
5419         struct qla_ddb_index  *nt_ddb_idx;
5420
5421         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5422                                       &fw_ddb_dma);
5423         if (fw_ddb_entry == NULL) {
5424                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5425                 goto exit_nt_list;
5426         }
5427         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5428                                      MAX_DEV_DB_ENTRIES;
5429         fw_idx_size = sizeof(struct qla_ddb_index);
5430
5431         for (idx = 0; idx < max_ddbs; idx = next_idx) {
5432                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5433                                               NULL, &next_idx, &state,
5434                                               &conn_err, NULL, &conn_id);
5435                 if (ret == QLA_ERROR)
5436                         break;
5437
5438                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
5439                         goto continue_next_nt;
5440
5441                 /* Check if NT, then add to list it */
5442                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
5443                         goto continue_next_nt;
5444
5445                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
5446                     state == DDB_DS_SESSION_FAILED))
5447                         goto continue_next_nt;
5448
5449                 DEBUG2(ql4_printk(KERN_INFO, ha,
5450                                   "Adding  DDB to session = 0x%x\n", idx));
5451                 if (is_reset == INIT_ADAPTER) {
5452                         nt_ddb_idx = vmalloc(fw_idx_size);
5453                         if (!nt_ddb_idx)
5454                                 break;
5455
5456                         nt_ddb_idx->fw_ddb_idx = idx;
5457
5458                         /* Copy original isid as it may get updated in function
5459                          * qla4xxx_update_isid(). We need original isid in
5460                          * function qla4xxx_compare_tuple_ddb to find duplicate
5461                          * target */
5462                         memcpy(&nt_ddb_idx->flash_isid[0],
5463                                &fw_ddb_entry->isid[0],
5464                                sizeof(nt_ddb_idx->flash_isid));
5465
5466                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
5467                                                           fw_ddb_entry);
5468                         if (ret == QLA_SUCCESS) {
5469                                 /* free nt_ddb_idx and do not add to list_nt */
5470                                 vfree(nt_ddb_idx);
5471                                 goto continue_next_nt;
5472                         }
5473
5474                         /* Copy updated isid */
5475                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
5476                                sizeof(struct dev_db_entry));
5477
5478                         list_add_tail(&nt_ddb_idx->list, list_nt);
5479                 } else if (is_reset == RESET_ADAPTER) {
5480                         if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
5481                                                                 QLA_SUCCESS)
5482                                 goto continue_next_nt;
5483                 }
5484
5485                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
5486                 if (ret == QLA_ERROR)
5487                         goto exit_nt_list;
5488
5489 continue_next_nt:
5490                 if (next_idx == 0)
5491                         break;
5492         }
5493
5494 exit_nt_list:
5495         if (fw_ddb_entry)
5496                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5497 }
5498
5499 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
5500                                       struct list_head *list_nt)
5501 {
5502         struct dev_db_entry *fw_ddb_entry;
5503         dma_addr_t fw_ddb_dma;
5504         int max_ddbs;
5505         int fw_idx_size;
5506         int ret;
5507         uint32_t idx = 0, next_idx = 0;
5508         uint32_t state = 0, conn_err = 0;
5509         uint16_t conn_id = 0;
5510         struct qla_ddb_index  *nt_ddb_idx;
5511
5512         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5513                                       &fw_ddb_dma);
5514         if (fw_ddb_entry == NULL) {
5515                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5516                 goto exit_new_nt_list;
5517         }
5518         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5519                                      MAX_DEV_DB_ENTRIES;
5520         fw_idx_size = sizeof(struct qla_ddb_index);
5521
5522         for (idx = 0; idx < max_ddbs; idx = next_idx) {
5523                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5524                                               NULL, &next_idx, &state,
5525                                               &conn_err, NULL, &conn_id);
5526                 if (ret == QLA_ERROR)
5527                         break;
5528
5529                 /* Check if NT, then add it to list */
5530                 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
5531                         goto continue_next_new_nt;
5532
5533                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
5534                         goto continue_next_new_nt;
5535
5536                 DEBUG2(ql4_printk(KERN_INFO, ha,
5537                                   "Adding  DDB to session = 0x%x\n", idx));
5538
5539                 nt_ddb_idx = vmalloc(fw_idx_size);
5540                 if (!nt_ddb_idx)
5541                         break;
5542
5543                 nt_ddb_idx->fw_ddb_idx = idx;
5544
5545                 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry);
5546                 if (ret == QLA_SUCCESS) {
5547                         /* free nt_ddb_idx and do not add to list_nt */
5548                         vfree(nt_ddb_idx);
5549                         goto continue_next_new_nt;
5550                 }
5551
5552                 list_add_tail(&nt_ddb_idx->list, list_nt);
5553
5554                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
5555                                               idx);
5556                 if (ret == QLA_ERROR)
5557                         goto exit_new_nt_list;
5558
5559 continue_next_new_nt:
5560                 if (next_idx == 0)
5561                         break;
5562         }
5563
5564 exit_new_nt_list:
5565         if (fw_ddb_entry)
5566                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5567 }
5568
5569 /**
5570  * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
5571  * @dev: dev associated with the sysfs entry
5572  * @data: pointer to flashnode session object
5573  *
5574  * Returns:
5575  *      1: if flashnode entry is non-persistent
5576  *      0: if flashnode entry is persistent
5577  **/
5578 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
5579 {
5580         struct iscsi_bus_flash_session *fnode_sess;
5581
5582         if (!iscsi_flashnode_bus_match(dev, NULL))
5583                 return 0;
5584
5585         fnode_sess = iscsi_dev_to_flash_session(dev);
5586
5587         return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
5588 }
5589
5590 /**
5591  * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
5592  * @ha: pointer to host
5593  * @fw_ddb_entry: flash ddb data
5594  * @idx: target index
5595  * @user: if set then this call is made from userland else from kernel
5596  *
5597  * Returns:
5598  * On sucess: QLA_SUCCESS
5599  * On failure: QLA_ERROR
5600  *
5601  * This create separate sysfs entries for session and connection attributes of
5602  * the given fw ddb entry.
5603  * If this is invoked as a result of a userspace call then the entry is marked
5604  * as nonpersistent using flash_state field.
5605  **/
5606 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
5607                                         struct dev_db_entry *fw_ddb_entry,
5608                                         uint16_t *idx, int user)
5609 {
5610         struct iscsi_bus_flash_session *fnode_sess = NULL;
5611         struct iscsi_bus_flash_conn *fnode_conn = NULL;
5612         int rc = QLA_ERROR;
5613
5614         fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
5615                                                  &qla4xxx_iscsi_transport, 0);
5616         if (!fnode_sess) {
5617                 ql4_printk(KERN_ERR, ha,
5618                            "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
5619                            __func__, *idx, ha->host_no);
5620                 goto exit_tgt_create;
5621         }
5622
5623         fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
5624                                                  &qla4xxx_iscsi_transport, 0);
5625         if (!fnode_conn) {
5626                 ql4_printk(KERN_ERR, ha,
5627                            "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
5628                            __func__, *idx, ha->host_no);
5629                 goto free_sess;
5630         }
5631
5632         if (user) {
5633                 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
5634         } else {
5635                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
5636
5637                 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
5638                         fnode_sess->is_boot_target = 1;
5639                 else
5640                         fnode_sess->is_boot_target = 0;
5641         }
5642
5643         rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
5644                                            fw_ddb_entry);
5645
5646         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
5647                    __func__, fnode_sess->dev.kobj.name);
5648
5649         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
5650                    __func__, fnode_conn->dev.kobj.name);
5651
5652         return QLA_SUCCESS;
5653
5654 free_sess:
5655         iscsi_destroy_flashnode_sess(fnode_sess);
5656
5657 exit_tgt_create:
5658         return QLA_ERROR;
5659 }
5660
5661 /**
5662  * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
5663  * @shost: pointer to host
5664  * @buf: type of ddb entry (ipv4/ipv6)
5665  * @len: length of buf
5666  *
5667  * This creates new ddb entry in the flash by finding first free index and
5668  * storing default ddb there. And then create sysfs entry for the new ddb entry.
5669  **/
5670 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
5671                                  int len)
5672 {
5673         struct scsi_qla_host *ha = to_qla_host(shost);
5674         struct dev_db_entry *fw_ddb_entry = NULL;
5675         dma_addr_t fw_ddb_entry_dma;
5676         struct device *dev;
5677         uint16_t idx = 0;
5678         uint16_t max_ddbs = 0;
5679         uint32_t options = 0;
5680         uint32_t rval = QLA_ERROR;
5681
5682         if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
5683             strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
5684                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
5685                                   __func__));
5686                 goto exit_ddb_add;
5687         }
5688
5689         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
5690                                      MAX_DEV_DB_ENTRIES;
5691
5692         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5693                                           &fw_ddb_entry_dma, GFP_KERNEL);
5694         if (!fw_ddb_entry) {
5695                 DEBUG2(ql4_printk(KERN_ERR, ha,
5696                                   "%s: Unable to allocate dma buffer\n",
5697                                   __func__));
5698                 goto exit_ddb_add;
5699         }
5700
5701         dev = iscsi_find_flashnode_sess(ha->host, NULL,
5702                                         qla4xxx_sysfs_ddb_is_non_persistent);
5703         if (dev) {
5704                 ql4_printk(KERN_ERR, ha,
5705                            "%s: A non-persistent entry %s found\n",
5706                            __func__, dev->kobj.name);
5707                 put_device(dev);
5708                 goto exit_ddb_add;
5709         }
5710
5711         /* Index 0 and 1 are reserved for boot target entries */
5712         for (idx = 2; idx < max_ddbs; idx++) {
5713                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
5714                                              fw_ddb_entry_dma, idx))
5715                         break;
5716         }
5717
5718         if (idx == max_ddbs)
5719                 goto exit_ddb_add;
5720
5721         if (!strncasecmp("ipv6", buf, 4))
5722                 options |= IPV6_DEFAULT_DDB_ENTRY;
5723
5724         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5725         if (rval == QLA_ERROR)
5726                 goto exit_ddb_add;
5727
5728         rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
5729
5730 exit_ddb_add:
5731         if (fw_ddb_entry)
5732                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5733                                   fw_ddb_entry, fw_ddb_entry_dma);
5734         if (rval == QLA_SUCCESS)
5735                 return idx;
5736         else
5737                 return -EIO;
5738 }
5739
5740 /**
5741  * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
5742  * @fnode_sess: pointer to session attrs of flash ddb entry
5743  * @fnode_conn: pointer to connection attrs of flash ddb entry
5744  *
5745  * This writes the contents of target ddb buffer to Flash with a valid cookie
5746  * value in order to make the ddb entry persistent.
5747  **/
5748 static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
5749                                     struct iscsi_bus_flash_conn *fnode_conn)
5750 {
5751         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
5752         struct scsi_qla_host *ha = to_qla_host(shost);
5753         uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
5754         struct dev_db_entry *fw_ddb_entry = NULL;
5755         dma_addr_t fw_ddb_entry_dma;
5756         uint32_t options = 0;
5757         int rval = 0;
5758
5759         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5760                                           &fw_ddb_entry_dma, GFP_KERNEL);
5761         if (!fw_ddb_entry) {
5762                 DEBUG2(ql4_printk(KERN_ERR, ha,
5763                                   "%s: Unable to allocate dma buffer\n",
5764                                   __func__));
5765                 rval = -ENOMEM;
5766                 goto exit_ddb_apply;
5767         }
5768
5769         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
5770                 options |= IPV6_DEFAULT_DDB_ENTRY;
5771
5772         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5773         if (rval == QLA_ERROR)
5774                 goto exit_ddb_apply;
5775
5776         dev_db_start_offset += (fnode_sess->target_id *
5777                                 sizeof(*fw_ddb_entry));
5778
5779         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
5780         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
5781
5782         rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
5783                                  sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
5784
5785         if (rval == QLA_SUCCESS) {
5786                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
5787                 ql4_printk(KERN_INFO, ha,
5788                            "%s: flash node %u of host %lu written to flash\n",
5789                            __func__, fnode_sess->target_id, ha->host_no);
5790         } else {
5791                 rval = -EIO;
5792                 ql4_printk(KERN_ERR, ha,
5793                            "%s: Error while writing flash node %u of host %lu to flash\n",
5794                            __func__, fnode_sess->target_id, ha->host_no);
5795         }
5796
5797 exit_ddb_apply:
5798         if (fw_ddb_entry)
5799                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5800                                   fw_ddb_entry, fw_ddb_entry_dma);
5801         return rval;
5802 }
5803
5804 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
5805                                            struct dev_db_entry *fw_ddb_entry,
5806                                            uint16_t idx)
5807 {
5808         struct dev_db_entry *ddb_entry = NULL;
5809         dma_addr_t ddb_entry_dma;
5810         unsigned long wtime;
5811         uint32_t mbx_sts = 0;
5812         uint32_t state = 0, conn_err = 0;
5813         uint16_t tmo = 0;
5814         int ret = 0;
5815
5816         ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
5817                                        &ddb_entry_dma, GFP_KERNEL);
5818         if (!ddb_entry) {
5819                 DEBUG2(ql4_printk(KERN_ERR, ha,
5820                                   "%s: Unable to allocate dma buffer\n",
5821                                   __func__));
5822                 return QLA_ERROR;
5823         }
5824
5825         memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
5826
5827         ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
5828         if (ret != QLA_SUCCESS) {
5829                 DEBUG2(ql4_printk(KERN_ERR, ha,
5830                                   "%s: Unable to set ddb entry for index %d\n",
5831                                   __func__, idx));
5832                 goto exit_ddb_conn_open;
5833         }
5834
5835         qla4xxx_conn_open(ha, idx);
5836
5837         /* To ensure that sendtargets is done, wait for at least 12 secs */
5838         tmo = ((ha->def_timeout > LOGIN_TOV) &&
5839                (ha->def_timeout < LOGIN_TOV * 10) ?
5840                ha->def_timeout : LOGIN_TOV);
5841
5842         DEBUG2(ql4_printk(KERN_INFO, ha,
5843                           "Default time to wait for login to ddb %d\n", tmo));
5844
5845         wtime = jiffies + (HZ * tmo);
5846         do {
5847                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
5848                                               NULL, &state, &conn_err, NULL,
5849                                               NULL);
5850                 if (ret == QLA_ERROR)
5851                         continue;
5852
5853                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
5854                     state == DDB_DS_SESSION_FAILED)
5855                         break;
5856
5857                 schedule_timeout_uninterruptible(HZ / 10);
5858         } while (time_after(wtime, jiffies));
5859
5860 exit_ddb_conn_open:
5861         if (ddb_entry)
5862                 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
5863                                   ddb_entry, ddb_entry_dma);
5864         return ret;
5865 }
5866
5867 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
5868                                 struct dev_db_entry *fw_ddb_entry)
5869 {
5870         struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
5871         struct list_head list_nt;
5872         uint16_t ddb_index;
5873         int ret = 0;
5874
5875         if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
5876                 ql4_printk(KERN_WARNING, ha,
5877                            "%s: A discovery already in progress!\n", __func__);
5878                 return QLA_ERROR;
5879         }
5880
5881         INIT_LIST_HEAD(&list_nt);
5882
5883         set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
5884
5885         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
5886         if (ret == QLA_ERROR)
5887                 goto exit_login_st_clr_bit;
5888
5889         ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
5890         if (ret == QLA_ERROR)
5891                 goto exit_login_st;
5892
5893         qla4xxx_build_new_nt_list(ha, &list_nt);
5894
5895         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
5896                 list_del_init(&ddb_idx->list);
5897                 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
5898                 vfree(ddb_idx);
5899         }
5900
5901 exit_login_st:
5902         if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
5903                 ql4_printk(KERN_ERR, ha,
5904                            "Unable to clear DDB index = 0x%x\n", ddb_index);
5905         }
5906
5907         clear_bit(ddb_index, ha->ddb_idx_map);
5908
5909 exit_login_st_clr_bit:
5910         clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
5911         return ret;
5912 }
5913
5914 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
5915                                 struct dev_db_entry *fw_ddb_entry,
5916                                 uint16_t idx)
5917 {
5918         int ret = QLA_ERROR;
5919
5920         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry);
5921         if (ret != QLA_SUCCESS)
5922                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
5923                                               idx);
5924         else
5925                 ret = -EPERM;
5926
5927         return ret;
5928 }
5929
5930 /**
5931  * qla4xxx_sysfs_ddb_login - Login to the specified target
5932  * @fnode_sess: pointer to session attrs of flash ddb entry
5933  * @fnode_conn: pointer to connection attrs of flash ddb entry
5934  *
5935  * This logs in to the specified target
5936  **/
5937 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
5938                                    struct iscsi_bus_flash_conn *fnode_conn)
5939 {
5940         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
5941         struct scsi_qla_host *ha = to_qla_host(shost);
5942         struct dev_db_entry *fw_ddb_entry = NULL;
5943         dma_addr_t fw_ddb_entry_dma;
5944         uint32_t options = 0;
5945         int ret = 0;
5946
5947         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
5948                 ql4_printk(KERN_ERR, ha,
5949                            "%s: Target info is not persistent\n", __func__);
5950                 ret = -EIO;
5951                 goto exit_ddb_login;
5952         }
5953
5954         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5955                                           &fw_ddb_entry_dma, GFP_KERNEL);
5956         if (!fw_ddb_entry) {
5957                 DEBUG2(ql4_printk(KERN_ERR, ha,
5958                                   "%s: Unable to allocate dma buffer\n",
5959                                   __func__));
5960                 ret = -ENOMEM;
5961                 goto exit_ddb_login;
5962         }
5963
5964         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
5965                 options |= IPV6_DEFAULT_DDB_ENTRY;
5966
5967         ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5968         if (ret == QLA_ERROR)
5969                 goto exit_ddb_login;
5970
5971         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
5972         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
5973
5974         if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
5975                 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry);
5976         else
5977                 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
5978                                            fnode_sess->target_id);
5979
5980         if (ret > 0)
5981                 ret = -EIO;
5982
5983 exit_ddb_login:
5984         if (fw_ddb_entry)
5985                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5986                                   fw_ddb_entry, fw_ddb_entry_dma);
5987         return ret;
5988 }
5989
5990 /**
5991  * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
5992  * @cls_sess: pointer to session to be logged out
5993  *
5994  * This performs session log out from the specified target
5995  **/
5996 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
5997 {
5998         struct iscsi_session *sess;
5999         struct ddb_entry *ddb_entry = NULL;
6000         struct scsi_qla_host *ha;
6001         struct dev_db_entry *fw_ddb_entry = NULL;
6002         dma_addr_t fw_ddb_entry_dma;
6003         unsigned long flags;
6004         unsigned long wtime;
6005         uint32_t ddb_state;
6006         int options;
6007         int ret = 0;
6008
6009         sess = cls_sess->dd_data;
6010         ddb_entry = sess->dd_data;
6011         ha = ddb_entry->ha;
6012
6013         if (ddb_entry->ddb_type != FLASH_DDB) {
6014                 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
6015                            __func__);
6016                 ret = -ENXIO;
6017                 goto exit_ddb_logout;
6018         }
6019
6020         if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
6021                 ql4_printk(KERN_ERR, ha,
6022                            "%s: Logout from boot target entry is not permitted.\n",
6023                            __func__);
6024                 ret = -EPERM;
6025                 goto exit_ddb_logout;
6026         }
6027
6028         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6029                                           &fw_ddb_entry_dma, GFP_KERNEL);
6030         if (!fw_ddb_entry) {
6031                 ql4_printk(KERN_ERR, ha,
6032                            "%s: Unable to allocate dma buffer\n", __func__);
6033                 ret = -ENOMEM;
6034                 goto exit_ddb_logout;
6035         }
6036
6037         if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
6038                 goto ddb_logout_init;
6039
6040         ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
6041                                       fw_ddb_entry, fw_ddb_entry_dma,
6042                                       NULL, NULL, &ddb_state, NULL,
6043                                       NULL, NULL);
6044         if (ret == QLA_ERROR)
6045                 goto ddb_logout_init;
6046
6047         if (ddb_state == DDB_DS_SESSION_ACTIVE)
6048                 goto ddb_logout_init;
6049
6050         /* wait until next relogin is triggered using DF_RELOGIN and
6051          * clear DF_RELOGIN to avoid invocation of further relogin
6052          */
6053         wtime = jiffies + (HZ * RELOGIN_TOV);
6054         do {
6055                 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
6056                         goto ddb_logout_init;
6057
6058                 schedule_timeout_uninterruptible(HZ);
6059         } while ((time_after(wtime, jiffies)));
6060
6061 ddb_logout_init:
6062         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6063         atomic_set(&ddb_entry->relogin_timer, 0);
6064
6065         options = LOGOUT_OPTION_CLOSE_SESSION;
6066         qla4xxx_session_logout_ddb(ha, ddb_entry, options);
6067
6068         memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
6069         wtime = jiffies + (HZ * LOGOUT_TOV);
6070         do {
6071                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
6072                                               fw_ddb_entry, fw_ddb_entry_dma,
6073                                               NULL, NULL, &ddb_state, NULL,
6074                                               NULL, NULL);
6075                 if (ret == QLA_ERROR)
6076                         goto ddb_logout_clr_sess;
6077
6078                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
6079                     (ddb_state == DDB_DS_SESSION_FAILED))
6080                         goto ddb_logout_clr_sess;
6081
6082                 schedule_timeout_uninterruptible(HZ);
6083         } while ((time_after(wtime, jiffies)));
6084
6085 ddb_logout_clr_sess:
6086         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
6087         /*
6088          * we have decremented the reference count of the driver
6089          * when we setup the session to have the driver unload
6090          * to be seamless without actually destroying the
6091          * session
6092          **/
6093         try_module_get(qla4xxx_iscsi_transport.owner);
6094         iscsi_destroy_endpoint(ddb_entry->conn->ep);
6095
6096         spin_lock_irqsave(&ha->hardware_lock, flags);
6097         qla4xxx_free_ddb(ha, ddb_entry);
6098         clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
6099         spin_unlock_irqrestore(&ha->hardware_lock, flags);
6100
6101         iscsi_session_teardown(ddb_entry->sess);
6102
6103         clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
6104         ret = QLA_SUCCESS;
6105
6106 exit_ddb_logout:
6107         if (fw_ddb_entry)
6108                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6109                                   fw_ddb_entry, fw_ddb_entry_dma);
6110         return ret;
6111 }
6112
6113 /**
6114  * qla4xxx_sysfs_ddb_logout - Logout from the specified target
6115  * @fnode_sess: pointer to session attrs of flash ddb entry
6116  * @fnode_conn: pointer to connection attrs of flash ddb entry
6117  *
6118  * This performs log out from the specified target
6119  **/
6120 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
6121                                     struct iscsi_bus_flash_conn *fnode_conn)
6122 {
6123         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6124         struct scsi_qla_host *ha = to_qla_host(shost);
6125         struct ql4_tuple_ddb *flash_tddb = NULL;
6126         struct ql4_tuple_ddb *tmp_tddb = NULL;
6127         struct dev_db_entry *fw_ddb_entry = NULL;
6128         struct ddb_entry *ddb_entry = NULL;
6129         dma_addr_t fw_ddb_dma;
6130         uint32_t next_idx = 0;
6131         uint32_t state = 0, conn_err = 0;
6132         uint16_t conn_id = 0;
6133         int idx, index;
6134         int status, ret = 0;
6135
6136         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6137                                       &fw_ddb_dma);
6138         if (fw_ddb_entry == NULL) {
6139                 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
6140                 ret = -ENOMEM;
6141                 goto exit_ddb_logout;
6142         }
6143
6144         flash_tddb = vzalloc(sizeof(*flash_tddb));
6145         if (!flash_tddb) {
6146                 ql4_printk(KERN_WARNING, ha,
6147                            "%s:Memory Allocation failed.\n", __func__);
6148                 ret = -ENOMEM;
6149                 goto exit_ddb_logout;
6150         }
6151
6152         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6153         if (!tmp_tddb) {
6154                 ql4_printk(KERN_WARNING, ha,
6155                            "%s:Memory Allocation failed.\n", __func__);
6156                 ret = -ENOMEM;
6157                 goto exit_ddb_logout;
6158         }
6159
6160         if (!fnode_sess->targetname) {
6161                 ql4_printk(KERN_ERR, ha,
6162                            "%s:Cannot logout from SendTarget entry\n",
6163                            __func__);
6164                 ret = -EPERM;
6165                 goto exit_ddb_logout;
6166         }
6167
6168         if (fnode_sess->is_boot_target) {
6169                 ql4_printk(KERN_ERR, ha,
6170                            "%s: Logout from boot target entry is not permitted.\n",
6171                            __func__);
6172                 ret = -EPERM;
6173                 goto exit_ddb_logout;
6174         }
6175
6176         strncpy(flash_tddb->iscsi_name, fnode_sess->targetname,
6177                 ISCSI_NAME_SIZE);
6178
6179         if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6180                 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
6181         else
6182                 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
6183
6184         flash_tddb->tpgt = fnode_sess->tpgt;
6185         flash_tddb->port = fnode_conn->port;
6186
6187         COPY_ISID(flash_tddb->isid, fnode_sess->isid);
6188
6189         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6190                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6191                 if (ddb_entry == NULL)
6192                         continue;
6193
6194                 if (ddb_entry->ddb_type != FLASH_DDB)
6195                         continue;
6196
6197                 index = ddb_entry->sess->target_id;
6198                 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
6199                                                  fw_ddb_dma, NULL, &next_idx,
6200                                                  &state, &conn_err, NULL,
6201                                                  &conn_id);
6202                 if (status == QLA_ERROR) {
6203                         ret = -ENOMEM;
6204                         break;
6205                 }
6206
6207                 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
6208
6209                 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
6210                                                    true);
6211                 if (status == QLA_SUCCESS) {
6212                         ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
6213                         break;
6214                 }
6215         }
6216
6217         if (idx == MAX_DDB_ENTRIES)
6218                 ret = -ESRCH;
6219
6220 exit_ddb_logout:
6221         if (flash_tddb)
6222                 vfree(flash_tddb);
6223         if (tmp_tddb)
6224                 vfree(tmp_tddb);
6225         if (fw_ddb_entry)
6226                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6227
6228         return ret;
6229 }
6230
6231 static int
6232 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
6233                             int param, char *buf)
6234 {
6235         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6236         struct scsi_qla_host *ha = to_qla_host(shost);
6237         struct iscsi_bus_flash_conn *fnode_conn;
6238         struct ql4_chap_table chap_tbl;
6239         struct device *dev;
6240         int parent_type;
6241         int rc = 0;
6242
6243         dev = iscsi_find_flashnode_conn(fnode_sess);
6244         if (!dev)
6245                 return -EIO;
6246
6247         fnode_conn = iscsi_dev_to_flash_conn(dev);
6248
6249         switch (param) {
6250         case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
6251                 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
6252                 break;
6253         case ISCSI_FLASHNODE_PORTAL_TYPE:
6254                 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
6255                 break;
6256         case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
6257                 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
6258                 break;
6259         case ISCSI_FLASHNODE_DISCOVERY_SESS:
6260                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
6261                 break;
6262         case ISCSI_FLASHNODE_ENTRY_EN:
6263                 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
6264                 break;
6265         case ISCSI_FLASHNODE_HDR_DGST_EN:
6266                 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
6267                 break;
6268         case ISCSI_FLASHNODE_DATA_DGST_EN:
6269                 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
6270                 break;
6271         case ISCSI_FLASHNODE_IMM_DATA_EN:
6272                 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
6273                 break;
6274         case ISCSI_FLASHNODE_INITIAL_R2T_EN:
6275                 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
6276                 break;
6277         case ISCSI_FLASHNODE_DATASEQ_INORDER:
6278                 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
6279                 break;
6280         case ISCSI_FLASHNODE_PDU_INORDER:
6281                 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
6282                 break;
6283         case ISCSI_FLASHNODE_CHAP_AUTH_EN:
6284                 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
6285                 break;
6286         case ISCSI_FLASHNODE_SNACK_REQ_EN:
6287                 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
6288                 break;
6289         case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
6290                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
6291                 break;
6292         case ISCSI_FLASHNODE_BIDI_CHAP_EN:
6293                 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
6294                 break;
6295         case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
6296                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
6297                 break;
6298         case ISCSI_FLASHNODE_ERL:
6299                 rc = sprintf(buf, "%u\n", fnode_sess->erl);
6300                 break;
6301         case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
6302                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
6303                 break;
6304         case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
6305                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
6306                 break;
6307         case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
6308                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
6309                 break;
6310         case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
6311                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
6312                 break;
6313         case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
6314                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
6315                 break;
6316         case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
6317                 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
6318                 break;
6319         case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
6320                 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
6321                 break;
6322         case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
6323                 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
6324                 break;
6325         case ISCSI_FLASHNODE_FIRST_BURST:
6326                 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
6327                 break;
6328         case ISCSI_FLASHNODE_DEF_TIME2WAIT:
6329                 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
6330                 break;
6331         case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
6332                 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
6333                 break;
6334         case ISCSI_FLASHNODE_MAX_R2T:
6335                 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
6336                 break;
6337         case ISCSI_FLASHNODE_KEEPALIVE_TMO:
6338                 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
6339                 break;
6340         case ISCSI_FLASHNODE_ISID:
6341                 rc = sprintf(buf, "%02x%02x%02x%02x%02x%02x\n",
6342                              fnode_sess->isid[0], fnode_sess->isid[1],
6343                              fnode_sess->isid[2], fnode_sess->isid[3],
6344                              fnode_sess->isid[4], fnode_sess->isid[5]);
6345                 break;
6346         case ISCSI_FLASHNODE_TSID:
6347                 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
6348                 break;
6349         case ISCSI_FLASHNODE_PORT:
6350                 rc = sprintf(buf, "%d\n", fnode_conn->port);
6351                 break;
6352         case ISCSI_FLASHNODE_MAX_BURST:
6353                 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
6354                 break;
6355         case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
6356                 rc = sprintf(buf, "%u\n",
6357                              fnode_sess->default_taskmgmt_timeout);
6358                 break;
6359         case ISCSI_FLASHNODE_IPADDR:
6360                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6361                         rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
6362                 else
6363                         rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
6364                 break;
6365         case ISCSI_FLASHNODE_ALIAS:
6366                 if (fnode_sess->targetalias)
6367                         rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
6368                 else
6369                         rc = sprintf(buf, "\n");
6370                 break;
6371         case ISCSI_FLASHNODE_REDIRECT_IPADDR:
6372                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6373                         rc = sprintf(buf, "%pI6\n",
6374                                      fnode_conn->redirect_ipaddr);
6375                 else
6376                         rc = sprintf(buf, "%pI4\n",
6377                                      fnode_conn->redirect_ipaddr);
6378                 break;
6379         case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
6380                 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
6381                 break;
6382         case ISCSI_FLASHNODE_LOCAL_PORT:
6383                 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
6384                 break;
6385         case ISCSI_FLASHNODE_IPV4_TOS:
6386                 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
6387                 break;
6388         case ISCSI_FLASHNODE_IPV6_TC:
6389                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6390                         rc = sprintf(buf, "%u\n",
6391                                      fnode_conn->ipv6_traffic_class);
6392                 else
6393                         rc = sprintf(buf, "\n");
6394                 break;
6395         case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
6396                 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
6397                 break;
6398         case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
6399                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6400                         rc = sprintf(buf, "%pI6\n",
6401                                      fnode_conn->link_local_ipv6_addr);
6402                 else
6403                         rc = sprintf(buf, "\n");
6404                 break;
6405         case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
6406                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
6407                 break;
6408         case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
6409                 if (fnode_sess->discovery_parent_type == DDB_ISNS)
6410                         parent_type = ISCSI_DISC_PARENT_ISNS;
6411                 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
6412                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
6413                 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
6414                         parent_type = ISCSI_DISC_PARENT_SENDTGT;
6415                 else
6416                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
6417
6418                 rc = sprintf(buf, "%s\n",
6419                              iscsi_get_discovery_parent_name(parent_type));
6420                 break;
6421         case ISCSI_FLASHNODE_NAME:
6422                 if (fnode_sess->targetname)
6423                         rc = sprintf(buf, "%s\n", fnode_sess->targetname);
6424                 else
6425                         rc = sprintf(buf, "\n");
6426                 break;
6427         case ISCSI_FLASHNODE_TPGT:
6428                 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
6429                 break;
6430         case ISCSI_FLASHNODE_TCP_XMIT_WSF:
6431                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
6432                 break;
6433         case ISCSI_FLASHNODE_TCP_RECV_WSF:
6434                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
6435                 break;
6436         case ISCSI_FLASHNODE_CHAP_OUT_IDX:
6437                 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
6438                 break;
6439         case ISCSI_FLASHNODE_USERNAME:
6440                 if (fnode_sess->chap_auth_en) {
6441                         qla4xxx_get_uni_chap_at_index(ha,
6442                                                       chap_tbl.name,
6443                                                       chap_tbl.secret,
6444                                                       fnode_sess->chap_out_idx);
6445                         rc = sprintf(buf, "%s\n", chap_tbl.name);
6446                 } else {
6447                         rc = sprintf(buf, "\n");
6448                 }
6449                 break;
6450         case ISCSI_FLASHNODE_PASSWORD:
6451                 if (fnode_sess->chap_auth_en) {
6452                         qla4xxx_get_uni_chap_at_index(ha,
6453                                                       chap_tbl.name,
6454                                                       chap_tbl.secret,
6455                                                       fnode_sess->chap_out_idx);
6456                         rc = sprintf(buf, "%s\n", chap_tbl.secret);
6457                 } else {
6458                         rc = sprintf(buf, "\n");
6459                 }
6460                 break;
6461         case ISCSI_FLASHNODE_STATSN:
6462                 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
6463                 break;
6464         case ISCSI_FLASHNODE_EXP_STATSN:
6465                 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
6466                 break;
6467         case ISCSI_FLASHNODE_IS_BOOT_TGT:
6468                 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
6469                 break;
6470         default:
6471                 rc = -ENOSYS;
6472                 break;
6473         }
6474
6475         put_device(dev);
6476         return rc;
6477 }
6478
6479 /**
6480  * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
6481  * @fnode_sess: pointer to session attrs of flash ddb entry
6482  * @fnode_conn: pointer to connection attrs of flash ddb entry
6483  * @data: Parameters and their values to update
6484  * @len: len of data
6485  *
6486  * This sets the parameter of flash ddb entry and writes them to flash
6487  **/
6488 static int
6489 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
6490                             struct iscsi_bus_flash_conn *fnode_conn,
6491                             void *data, int len)
6492 {
6493         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6494         struct scsi_qla_host *ha = to_qla_host(shost);
6495         struct iscsi_flashnode_param_info *fnode_param;
6496         struct nlattr *attr;
6497         int rc = QLA_ERROR;
6498         uint32_t rem = len;
6499
6500         nla_for_each_attr(attr, data, len, rem) {
6501                 fnode_param = nla_data(attr);
6502
6503                 switch (fnode_param->param) {
6504                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
6505                         fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
6506                         break;
6507                 case ISCSI_FLASHNODE_PORTAL_TYPE:
6508                         memcpy(fnode_sess->portal_type, fnode_param->value,
6509                                strlen(fnode_sess->portal_type));
6510                         break;
6511                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
6512                         fnode_sess->auto_snd_tgt_disable =
6513                                                         fnode_param->value[0];
6514                         break;
6515                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
6516                         fnode_sess->discovery_sess = fnode_param->value[0];
6517                         break;
6518                 case ISCSI_FLASHNODE_ENTRY_EN:
6519                         fnode_sess->entry_state = fnode_param->value[0];
6520                         break;
6521                 case ISCSI_FLASHNODE_HDR_DGST_EN:
6522                         fnode_conn->hdrdgst_en = fnode_param->value[0];
6523                         break;
6524                 case ISCSI_FLASHNODE_DATA_DGST_EN:
6525                         fnode_conn->datadgst_en = fnode_param->value[0];
6526                         break;
6527                 case ISCSI_FLASHNODE_IMM_DATA_EN:
6528                         fnode_sess->imm_data_en = fnode_param->value[0];
6529                         break;
6530                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
6531                         fnode_sess->initial_r2t_en = fnode_param->value[0];
6532                         break;
6533                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
6534                         fnode_sess->dataseq_inorder_en = fnode_param->value[0];
6535                         break;
6536                 case ISCSI_FLASHNODE_PDU_INORDER:
6537                         fnode_sess->pdu_inorder_en = fnode_param->value[0];
6538                         break;
6539                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
6540                         fnode_sess->chap_auth_en = fnode_param->value[0];
6541                         break;
6542                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
6543                         fnode_conn->snack_req_en = fnode_param->value[0];
6544                         break;
6545                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
6546                         fnode_sess->discovery_logout_en = fnode_param->value[0];
6547                         break;
6548                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
6549                         fnode_sess->bidi_chap_en = fnode_param->value[0];
6550                         break;
6551                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
6552                         fnode_sess->discovery_auth_optional =
6553                                                         fnode_param->value[0];
6554                         break;
6555                 case ISCSI_FLASHNODE_ERL:
6556                         fnode_sess->erl = fnode_param->value[0];
6557                         break;
6558                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
6559                         fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
6560                         break;
6561                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
6562                         fnode_conn->tcp_nagle_disable = fnode_param->value[0];
6563                         break;
6564                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
6565                         fnode_conn->tcp_wsf_disable = fnode_param->value[0];
6566                         break;
6567                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
6568                         fnode_conn->tcp_timer_scale = fnode_param->value[0];
6569                         break;
6570                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
6571                         fnode_conn->tcp_timestamp_en = fnode_param->value[0];
6572                         break;
6573                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
6574                         fnode_conn->fragment_disable = fnode_param->value[0];
6575                         break;
6576                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
6577                         fnode_conn->max_recv_dlength =
6578                                         *(unsigned *)fnode_param->value;
6579                         break;
6580                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
6581                         fnode_conn->max_xmit_dlength =
6582                                         *(unsigned *)fnode_param->value;
6583                         break;
6584                 case ISCSI_FLASHNODE_FIRST_BURST:
6585                         fnode_sess->first_burst =
6586                                         *(unsigned *)fnode_param->value;
6587                         break;
6588                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
6589                         fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
6590                         break;
6591                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
6592                         fnode_sess->time2retain =
6593                                                 *(uint16_t *)fnode_param->value;
6594                         break;
6595                 case ISCSI_FLASHNODE_MAX_R2T:
6596                         fnode_sess->max_r2t =
6597                                         *(uint16_t *)fnode_param->value;
6598                         break;
6599                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
6600                         fnode_conn->keepalive_timeout =
6601                                 *(uint16_t *)fnode_param->value;
6602                         break;
6603                 case ISCSI_FLASHNODE_ISID:
6604                         memcpy(fnode_sess->isid, fnode_param->value,
6605                                sizeof(fnode_sess->isid));
6606                         break;
6607                 case ISCSI_FLASHNODE_TSID:
6608                         fnode_sess->tsid = *(uint16_t *)fnode_param->value;
6609                         break;
6610                 case ISCSI_FLASHNODE_PORT:
6611                         fnode_conn->port = *(uint16_t *)fnode_param->value;
6612                         break;
6613                 case ISCSI_FLASHNODE_MAX_BURST:
6614                         fnode_sess->max_burst = *(unsigned *)fnode_param->value;
6615                         break;
6616                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
6617                         fnode_sess->default_taskmgmt_timeout =
6618                                                 *(uint16_t *)fnode_param->value;
6619                         break;
6620                 case ISCSI_FLASHNODE_IPADDR:
6621                         memcpy(fnode_conn->ipaddress, fnode_param->value,
6622                                IPv6_ADDR_LEN);
6623                         break;
6624                 case ISCSI_FLASHNODE_ALIAS:
6625                         rc = iscsi_switch_str_param(&fnode_sess->targetalias,
6626                                                     (char *)fnode_param->value);
6627                         break;
6628                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
6629                         memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
6630                                IPv6_ADDR_LEN);
6631                         break;
6632                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
6633                         fnode_conn->max_segment_size =
6634                                         *(unsigned *)fnode_param->value;
6635                         break;
6636                 case ISCSI_FLASHNODE_LOCAL_PORT:
6637                         fnode_conn->local_port =
6638                                                 *(uint16_t *)fnode_param->value;
6639                         break;
6640                 case ISCSI_FLASHNODE_IPV4_TOS:
6641                         fnode_conn->ipv4_tos = fnode_param->value[0];
6642                         break;
6643                 case ISCSI_FLASHNODE_IPV6_TC:
6644                         fnode_conn->ipv6_traffic_class = fnode_param->value[0];
6645                         break;
6646                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
6647                         fnode_conn->ipv6_flow_label = fnode_param->value[0];
6648                         break;
6649                 case ISCSI_FLASHNODE_NAME:
6650                         rc = iscsi_switch_str_param(&fnode_sess->targetname,
6651                                                     (char *)fnode_param->value);
6652                         break;
6653                 case ISCSI_FLASHNODE_TPGT:
6654                         fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
6655                         break;
6656                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
6657                         memcpy(fnode_conn->link_local_ipv6_addr,
6658                                fnode_param->value, IPv6_ADDR_LEN);
6659                         break;
6660                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
6661                         fnode_sess->discovery_parent_idx =
6662                                                 *(uint16_t *)fnode_param->value;
6663                         break;
6664                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
6665                         fnode_conn->tcp_xmit_wsf =
6666                                                 *(uint8_t *)fnode_param->value;
6667                         break;
6668                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
6669                         fnode_conn->tcp_recv_wsf =
6670                                                 *(uint8_t *)fnode_param->value;
6671                         break;
6672                 case ISCSI_FLASHNODE_STATSN:
6673                         fnode_conn->statsn = *(uint32_t *)fnode_param->value;
6674                         break;
6675                 case ISCSI_FLASHNODE_EXP_STATSN:
6676                         fnode_conn->exp_statsn =
6677                                                 *(uint32_t *)fnode_param->value;
6678                         break;
6679                 default:
6680                         ql4_printk(KERN_ERR, ha,
6681                                    "%s: No such sysfs attribute\n", __func__);
6682                         rc = -ENOSYS;
6683                         goto exit_set_param;
6684                 }
6685         }
6686
6687         rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
6688
6689 exit_set_param:
6690         return rc;
6691 }
6692
6693 /**
6694  * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
6695  * @fnode_sess: pointer to session attrs of flash ddb entry
6696  *
6697  * This invalidates the flash ddb entry at the given index
6698  **/
6699 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
6700 {
6701         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6702         struct scsi_qla_host *ha = to_qla_host(shost);
6703         uint32_t dev_db_start_offset;
6704         uint32_t dev_db_end_offset;
6705         struct dev_db_entry *fw_ddb_entry = NULL;
6706         dma_addr_t fw_ddb_entry_dma;
6707         uint16_t *ddb_cookie = NULL;
6708         size_t ddb_size = 0;
6709         void *pddb = NULL;
6710         int target_id;
6711         int rc = 0;
6712
6713         if (fnode_sess->is_boot_target) {
6714                 rc = -EPERM;
6715                 DEBUG2(ql4_printk(KERN_ERR, ha,
6716                                   "%s: Deletion of boot target entry is not permitted.\n",
6717                                   __func__));
6718                 goto exit_ddb_del;
6719         }
6720
6721         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
6722                 goto sysfs_ddb_del;
6723
6724         if (is_qla40XX(ha)) {
6725                 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
6726                 dev_db_end_offset = FLASH_OFFSET_DB_END;
6727                 dev_db_start_offset += (fnode_sess->target_id *
6728                                        sizeof(*fw_ddb_entry));
6729                 ddb_size = sizeof(*fw_ddb_entry);
6730         } else {
6731                 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
6732                                       (ha->hw.flt_region_ddb << 2);
6733                 /* flt_ddb_size is DDB table size for both ports
6734                  * so divide it by 2 to calculate the offset for second port
6735                  */
6736                 if (ha->port_num == 1)
6737                         dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
6738
6739                 dev_db_end_offset = dev_db_start_offset +
6740                                     (ha->hw.flt_ddb_size / 2);
6741
6742                 dev_db_start_offset += (fnode_sess->target_id *
6743                                        sizeof(*fw_ddb_entry));
6744                 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
6745
6746                 ddb_size = sizeof(*ddb_cookie);
6747         }
6748
6749         DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
6750                           __func__, dev_db_start_offset, dev_db_end_offset));
6751
6752         if (dev_db_start_offset > dev_db_end_offset) {
6753                 rc = -EIO;
6754                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
6755                                   __func__, fnode_sess->target_id));
6756                 goto exit_ddb_del;
6757         }
6758
6759         pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
6760                                   &fw_ddb_entry_dma, GFP_KERNEL);
6761         if (!pddb) {
6762                 rc = -ENOMEM;
6763                 DEBUG2(ql4_printk(KERN_ERR, ha,
6764                                   "%s: Unable to allocate dma buffer\n",
6765                                   __func__));
6766                 goto exit_ddb_del;
6767         }
6768
6769         if (is_qla40XX(ha)) {
6770                 fw_ddb_entry = pddb;
6771                 memset(fw_ddb_entry, 0, ddb_size);
6772                 ddb_cookie = &fw_ddb_entry->cookie;
6773         } else {
6774                 ddb_cookie = pddb;
6775         }
6776
6777         /* invalidate the cookie */
6778         *ddb_cookie = 0xFFEE;
6779         qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
6780                           ddb_size, FLASH_OPT_RMW_COMMIT);
6781
6782 sysfs_ddb_del:
6783         target_id = fnode_sess->target_id;
6784         iscsi_destroy_flashnode_sess(fnode_sess);
6785         ql4_printk(KERN_INFO, ha,
6786                    "%s: session and conn entries for flashnode %u of host %lu deleted\n",
6787                    __func__, target_id, ha->host_no);
6788 exit_ddb_del:
6789         if (pddb)
6790                 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
6791                                   fw_ddb_entry_dma);
6792         return rc;
6793 }
6794
6795 /**
6796  * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
6797  * @ha: pointer to adapter structure
6798  *
6799  * Export the firmware DDB for all send targets and normal targets to sysfs.
6800  **/
6801 static int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
6802 {
6803         struct dev_db_entry *fw_ddb_entry = NULL;
6804         dma_addr_t fw_ddb_entry_dma;
6805         uint16_t max_ddbs;
6806         uint16_t idx = 0;
6807         int ret = QLA_SUCCESS;
6808
6809         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
6810                                           sizeof(*fw_ddb_entry),
6811                                           &fw_ddb_entry_dma, GFP_KERNEL);
6812         if (!fw_ddb_entry) {
6813                 DEBUG2(ql4_printk(KERN_ERR, ha,
6814                                   "%s: Unable to allocate dma buffer\n",
6815                                   __func__));
6816                 return -ENOMEM;
6817         }
6818
6819         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
6820                                      MAX_DEV_DB_ENTRIES;
6821
6822         for (idx = 0; idx < max_ddbs; idx++) {
6823                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
6824                                              idx))
6825                         continue;
6826
6827                 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
6828                 if (ret) {
6829                         ret = -EIO;
6830                         break;
6831                 }
6832         }
6833
6834         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
6835                           fw_ddb_entry_dma);
6836
6837         return ret;
6838 }
6839
6840 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
6841 {
6842         iscsi_destroy_all_flashnode(ha->host);
6843 }
6844
6845 /**
6846  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
6847  * @ha: pointer to adapter structure
6848  * @is_reset: Is this init path or reset path
6849  *
6850  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
6851  * using connection open, then create the list of normal targets (nt)
6852  * from firmware DDBs. Based on the list of nt setup session and connection
6853  * objects.
6854  **/
6855 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
6856 {
6857         uint16_t tmo = 0;
6858         struct list_head list_st, list_nt;
6859         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
6860         unsigned long wtime;
6861
6862         if (!test_bit(AF_LINK_UP, &ha->flags)) {
6863                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
6864                 ha->is_reset = is_reset;
6865                 return;
6866         }
6867
6868         INIT_LIST_HEAD(&list_st);
6869         INIT_LIST_HEAD(&list_nt);
6870
6871         qla4xxx_build_st_list(ha, &list_st);
6872
6873         /* Before issuing conn open mbox, ensure all IPs states are configured
6874          * Note, conn open fails if IPs are not configured
6875          */
6876         qla4xxx_wait_for_ip_configuration(ha);
6877
6878         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
6879         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
6880                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
6881         }
6882
6883         /* Wait to ensure all sendtargets are done for min 12 sec wait */
6884         tmo = ((ha->def_timeout > LOGIN_TOV) &&
6885                (ha->def_timeout < LOGIN_TOV * 10) ?
6886                ha->def_timeout : LOGIN_TOV);
6887
6888         DEBUG2(ql4_printk(KERN_INFO, ha,
6889                           "Default time to wait for build ddb %d\n", tmo));
6890
6891         wtime = jiffies + (HZ * tmo);
6892         do {
6893                 if (list_empty(&list_st))
6894                         break;
6895
6896                 qla4xxx_remove_failed_ddb(ha, &list_st);
6897                 schedule_timeout_uninterruptible(HZ / 10);
6898         } while (time_after(wtime, jiffies));
6899
6900         /* Free up the sendtargets list */
6901         qla4xxx_free_ddb_list(&list_st);
6902
6903         qla4xxx_build_nt_list(ha, &list_nt, is_reset);
6904
6905         qla4xxx_free_ddb_list(&list_nt);
6906
6907         qla4xxx_free_ddb_index(ha);
6908 }
6909
6910 /**
6911  * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
6912  * response.
6913  * @ha: pointer to adapter structure
6914  *
6915  * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
6916  * set in DDB and we will wait for login response of boot targets during
6917  * probe.
6918  **/
6919 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
6920 {
6921         struct ddb_entry *ddb_entry;
6922         struct dev_db_entry *fw_ddb_entry = NULL;
6923         dma_addr_t fw_ddb_entry_dma;
6924         unsigned long wtime;
6925         uint32_t ddb_state;
6926         int max_ddbs, idx, ret;
6927
6928         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6929                                      MAX_DEV_DB_ENTRIES;
6930
6931         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6932                                           &fw_ddb_entry_dma, GFP_KERNEL);
6933         if (!fw_ddb_entry) {
6934                 ql4_printk(KERN_ERR, ha,
6935                            "%s: Unable to allocate dma buffer\n", __func__);
6936                 goto exit_login_resp;
6937         }
6938
6939         wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
6940
6941         for (idx = 0; idx < max_ddbs; idx++) {
6942                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6943                 if (ddb_entry == NULL)
6944                         continue;
6945
6946                 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
6947                         DEBUG2(ql4_printk(KERN_INFO, ha,
6948                                           "%s: DDB index [%d]\n", __func__,
6949                                           ddb_entry->fw_ddb_index));
6950                         do {
6951                                 ret = qla4xxx_get_fwddb_entry(ha,
6952                                                 ddb_entry->fw_ddb_index,
6953                                                 fw_ddb_entry, fw_ddb_entry_dma,
6954                                                 NULL, NULL, &ddb_state, NULL,
6955                                                 NULL, NULL);
6956                                 if (ret == QLA_ERROR)
6957                                         goto exit_login_resp;
6958
6959                                 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
6960                                     (ddb_state == DDB_DS_SESSION_FAILED))
6961                                         break;
6962
6963                                 schedule_timeout_uninterruptible(HZ);
6964
6965                         } while ((time_after(wtime, jiffies)));
6966
6967                         if (!time_after(wtime, jiffies)) {
6968                                 DEBUG2(ql4_printk(KERN_INFO, ha,
6969                                                   "%s: Login response wait timer expired\n",
6970                                                   __func__));
6971                                  goto exit_login_resp;
6972                         }
6973                 }
6974         }
6975
6976 exit_login_resp:
6977         if (fw_ddb_entry)
6978                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6979                                   fw_ddb_entry, fw_ddb_entry_dma);
6980 }
6981
6982 /**
6983  * qla4xxx_probe_adapter - callback function to probe HBA
6984  * @pdev: pointer to pci_dev structure
6985  * @pci_device_id: pointer to pci_device entry
6986  *
6987  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
6988  * It returns zero if successful. It also initializes all data necessary for
6989  * the driver.
6990  **/
6991 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
6992                                  const struct pci_device_id *ent)
6993 {
6994         int ret = -ENODEV, status;
6995         struct Scsi_Host *host;
6996         struct scsi_qla_host *ha;
6997         uint8_t init_retry_count = 0;
6998         char buf[34];
6999         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
7000         uint32_t dev_state;
7001
7002         if (pci_enable_device(pdev))
7003                 return -1;
7004
7005         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
7006         if (host == NULL) {
7007                 printk(KERN_WARNING
7008                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
7009                 goto probe_disable_device;
7010         }
7011
7012         /* Clear our data area */
7013         ha = to_qla_host(host);
7014         memset(ha, 0, sizeof(*ha));
7015
7016         /* Save the information from PCI BIOS.  */
7017         ha->pdev = pdev;
7018         ha->host = host;
7019         ha->host_no = host->host_no;
7020         ha->func_num = PCI_FUNC(ha->pdev->devfn);
7021
7022         pci_enable_pcie_error_reporting(pdev);
7023
7024         /* Setup Runtime configurable options */
7025         if (is_qla8022(ha)) {
7026                 ha->isp_ops = &qla4_82xx_isp_ops;
7027                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
7028                 ha->qdr_sn_window = -1;
7029                 ha->ddr_mn_window = -1;
7030                 ha->curr_window = 255;
7031                 nx_legacy_intr = &legacy_intr[ha->func_num];
7032                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
7033                 ha->nx_legacy_intr.tgt_status_reg =
7034                         nx_legacy_intr->tgt_status_reg;
7035                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
7036                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
7037         } else if (is_qla8032(ha) || is_qla8042(ha)) {
7038                 ha->isp_ops = &qla4_83xx_isp_ops;
7039                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
7040         } else {
7041                 ha->isp_ops = &qla4xxx_isp_ops;
7042         }
7043
7044         if (is_qla80XX(ha)) {
7045                 rwlock_init(&ha->hw_lock);
7046                 ha->pf_bit = ha->func_num << 16;
7047                 /* Set EEH reset type to fundamental if required by hba */
7048                 pdev->needs_freset = 1;
7049         }
7050
7051         /* Configure PCI I/O space. */
7052         ret = ha->isp_ops->iospace_config(ha);
7053         if (ret)
7054                 goto probe_failed_ioconfig;
7055
7056         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
7057                    pdev->device, pdev->irq, ha->reg);
7058
7059         qla4xxx_config_dma_addressing(ha);
7060
7061         /* Initialize lists and spinlocks. */
7062         INIT_LIST_HEAD(&ha->free_srb_q);
7063
7064         mutex_init(&ha->mbox_sem);
7065         mutex_init(&ha->chap_sem);
7066         init_completion(&ha->mbx_intr_comp);
7067         init_completion(&ha->disable_acb_comp);
7068
7069         spin_lock_init(&ha->hardware_lock);
7070         spin_lock_init(&ha->work_lock);
7071
7072         /* Initialize work list */
7073         INIT_LIST_HEAD(&ha->work_list);
7074
7075         /* Allocate dma buffers */
7076         if (qla4xxx_mem_alloc(ha)) {
7077                 ql4_printk(KERN_WARNING, ha,
7078                     "[ERROR] Failed to allocate memory for adapter\n");
7079
7080                 ret = -ENOMEM;
7081                 goto probe_failed;
7082         }
7083
7084         host->cmd_per_lun = 3;
7085         host->max_channel = 0;
7086         host->max_lun = MAX_LUNS - 1;
7087         host->max_id = MAX_TARGETS;
7088         host->max_cmd_len = IOCB_MAX_CDB_LEN;
7089         host->can_queue = MAX_SRBS ;
7090         host->transportt = qla4xxx_scsi_transport;
7091
7092         ret = scsi_init_shared_tag_map(host, MAX_SRBS);
7093         if (ret) {
7094                 ql4_printk(KERN_WARNING, ha,
7095                            "%s: scsi_init_shared_tag_map failed\n", __func__);
7096                 goto probe_failed;
7097         }
7098
7099         pci_set_drvdata(pdev, ha);
7100
7101         ret = scsi_add_host(host, &pdev->dev);
7102         if (ret)
7103                 goto probe_failed;
7104
7105         if (is_qla80XX(ha))
7106                 qla4_8xxx_get_flash_info(ha);
7107
7108         if (is_qla8032(ha) || is_qla8042(ha)) {
7109                 qla4_83xx_read_reset_template(ha);
7110                 /*
7111                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
7112                  * If DONRESET_BIT0 is set, drivers should not set dev_state
7113                  * to NEED_RESET. But if NEED_RESET is set, drivers should
7114                  * should honor the reset.
7115                  */
7116                 if (ql4xdontresethba == 1)
7117                         qla4_83xx_set_idc_dontreset(ha);
7118         }
7119
7120         /*
7121          * Initialize the Host adapter request/response queues and
7122          * firmware
7123          * NOTE: interrupts enabled upon successful completion
7124          */
7125         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
7126
7127         /* Dont retry adapter initialization if IRQ allocation failed */
7128         if (is_qla80XX(ha) && !test_bit(AF_IRQ_ATTACHED, &ha->flags)) {
7129                 ql4_printk(KERN_WARNING, ha, "%s: Skipping retry of adapter initialization\n",
7130                            __func__);
7131                 goto skip_retry_init;
7132         }
7133
7134         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
7135             init_retry_count++ < MAX_INIT_RETRIES) {
7136
7137                 if (is_qla80XX(ha)) {
7138                         ha->isp_ops->idc_lock(ha);
7139                         dev_state = qla4_8xxx_rd_direct(ha,
7140                                                         QLA8XXX_CRB_DEV_STATE);
7141                         ha->isp_ops->idc_unlock(ha);
7142                         if (dev_state == QLA8XXX_DEV_FAILED) {
7143                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
7144                                     "initialize adapter. H/W is in failed state\n",
7145                                     __func__);
7146                                 break;
7147                         }
7148                 }
7149                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
7150                               "(%d)\n", __func__, init_retry_count));
7151
7152                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
7153                         continue;
7154
7155                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
7156         }
7157
7158 skip_retry_init:
7159         if (!test_bit(AF_ONLINE, &ha->flags)) {
7160                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
7161
7162                 if ((is_qla8022(ha) && ql4xdontresethba) ||
7163                     ((is_qla8032(ha) || is_qla8042(ha)) &&
7164                      qla4_83xx_idc_dontreset(ha))) {
7165                         /* Put the device in failed state. */
7166                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
7167                         ha->isp_ops->idc_lock(ha);
7168                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7169                                             QLA8XXX_DEV_FAILED);
7170                         ha->isp_ops->idc_unlock(ha);
7171                 }
7172                 ret = -ENODEV;
7173                 goto remove_host;
7174         }
7175
7176         /* Startup the kernel thread for this host adapter. */
7177         DEBUG2(printk("scsi: %s: Starting kernel thread for "
7178                       "qla4xxx_dpc\n", __func__));
7179         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
7180         ha->dpc_thread = create_singlethread_workqueue(buf);
7181         if (!ha->dpc_thread) {
7182                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
7183                 ret = -ENODEV;
7184                 goto remove_host;
7185         }
7186         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
7187
7188         ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
7189                                       ha->host_no);
7190         if (!ha->task_wq) {
7191                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
7192                 ret = -ENODEV;
7193                 goto remove_host;
7194         }
7195
7196         /*
7197          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
7198          * (which is called indirectly by qla4xxx_initialize_adapter),
7199          * so that irqs will be registered after crbinit but before
7200          * mbx_intr_enable.
7201          */
7202         if (is_qla40XX(ha)) {
7203                 ret = qla4xxx_request_irqs(ha);
7204                 if (ret) {
7205                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
7206                             "interrupt %d already in use.\n", pdev->irq);
7207                         goto remove_host;
7208                 }
7209         }
7210
7211         pci_save_state(ha->pdev);
7212         ha->isp_ops->enable_intrs(ha);
7213
7214         /* Start timer thread. */
7215         qla4xxx_start_timer(ha, qla4xxx_timer, 1);
7216
7217         set_bit(AF_INIT_DONE, &ha->flags);
7218
7219         qla4_8xxx_alloc_sysfs_attr(ha);
7220
7221         printk(KERN_INFO
7222                " QLogic iSCSI HBA Driver version: %s\n"
7223                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
7224                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
7225                ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
7226                ha->fw_info.fw_patch, ha->fw_info.fw_build);
7227
7228         /* Set the driver version */
7229         if (is_qla80XX(ha))
7230                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
7231
7232         if (qla4xxx_setup_boot_info(ha))
7233                 ql4_printk(KERN_ERR, ha,
7234                            "%s: No iSCSI boot target configured\n", __func__);
7235
7236         if (qla4xxx_sysfs_ddb_export(ha))
7237                 ql4_printk(KERN_ERR, ha,
7238                            "%s: Error exporting ddb to sysfs\n", __func__);
7239
7240                 /* Perform the build ddb list and login to each */
7241         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
7242         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
7243         qla4xxx_wait_login_resp_boot_tgt(ha);
7244
7245         qla4xxx_create_chap_list(ha);
7246
7247         qla4xxx_create_ifaces(ha);
7248         return 0;
7249
7250 remove_host:
7251         scsi_remove_host(ha->host);
7252
7253 probe_failed:
7254         qla4xxx_free_adapter(ha);
7255
7256 probe_failed_ioconfig:
7257         pci_disable_pcie_error_reporting(pdev);
7258         scsi_host_put(ha->host);
7259
7260 probe_disable_device:
7261         pci_disable_device(pdev);
7262
7263         return ret;
7264 }
7265
7266 /**
7267  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
7268  * @ha: pointer to adapter structure
7269  *
7270  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
7271  * so that the other port will not re-initialize while in the process of
7272  * removing the ha due to driver unload or hba hotplug.
7273  **/
7274 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
7275 {
7276         struct scsi_qla_host *other_ha = NULL;
7277         struct pci_dev *other_pdev = NULL;
7278         int fn = ISP4XXX_PCI_FN_2;
7279
7280         /*iscsi function numbers for ISP4xxx is 1 and 3*/
7281         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
7282                 fn = ISP4XXX_PCI_FN_1;
7283
7284         other_pdev =
7285                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
7286                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
7287                 fn));
7288
7289         /* Get other_ha if other_pdev is valid and state is enable*/
7290         if (other_pdev) {
7291                 if (atomic_read(&other_pdev->enable_cnt)) {
7292                         other_ha = pci_get_drvdata(other_pdev);
7293                         if (other_ha) {
7294                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
7295                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
7296                                     "Prevent %s reinit\n", __func__,
7297                                     dev_name(&other_ha->pdev->dev)));
7298                         }
7299                 }
7300                 pci_dev_put(other_pdev);
7301         }
7302 }
7303
7304 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
7305 {
7306         struct ddb_entry *ddb_entry;
7307         int options;
7308         int idx;
7309
7310         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7311
7312                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7313                 if ((ddb_entry != NULL) &&
7314                     (ddb_entry->ddb_type == FLASH_DDB)) {
7315
7316                         options = LOGOUT_OPTION_CLOSE_SESSION;
7317                         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
7318                             == QLA_ERROR)
7319                                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
7320                                            __func__);
7321
7322                         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7323                         /*
7324                          * we have decremented the reference count of the driver
7325                          * when we setup the session to have the driver unload
7326                          * to be seamless without actually destroying the
7327                          * session
7328                          **/
7329                         try_module_get(qla4xxx_iscsi_transport.owner);
7330                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
7331                         qla4xxx_free_ddb(ha, ddb_entry);
7332                         iscsi_session_teardown(ddb_entry->sess);
7333                 }
7334         }
7335 }
7336 /**
7337  * qla4xxx_remove_adapter - callback function to remove adapter.
7338  * @pci_dev: PCI device pointer
7339  **/
7340 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
7341 {
7342         struct scsi_qla_host *ha;
7343
7344         /*
7345          * If the PCI device is disabled then it means probe_adapter had
7346          * failed and resources already cleaned up on probe_adapter exit.
7347          */
7348         if (!pci_is_enabled(pdev))
7349                 return;
7350
7351         ha = pci_get_drvdata(pdev);
7352
7353         if (is_qla40XX(ha))
7354                 qla4xxx_prevent_other_port_reinit(ha);
7355
7356         /* destroy iface from sysfs */
7357         qla4xxx_destroy_ifaces(ha);
7358
7359         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
7360                 iscsi_boot_destroy_kset(ha->boot_kset);
7361
7362         qla4xxx_destroy_fw_ddb_session(ha);
7363         qla4_8xxx_free_sysfs_attr(ha);
7364
7365         qla4xxx_sysfs_ddb_remove(ha);
7366         scsi_remove_host(ha->host);
7367
7368         qla4xxx_free_adapter(ha);
7369
7370         scsi_host_put(ha->host);
7371
7372         pci_disable_pcie_error_reporting(pdev);
7373         pci_disable_device(pdev);
7374         pci_set_drvdata(pdev, NULL);
7375 }
7376
7377 /**
7378  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
7379  * @ha: HA context
7380  *
7381  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
7382  * supported addressing method.
7383  */
7384 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
7385 {
7386         int retval;
7387
7388         /* Update our PCI device dma_mask for full 64 bit mask */
7389         if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
7390                 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
7391                         dev_dbg(&ha->pdev->dev,
7392                                   "Failed to set 64 bit PCI consistent mask; "
7393                                    "using 32 bit.\n");
7394                         retval = pci_set_consistent_dma_mask(ha->pdev,
7395                                                              DMA_BIT_MASK(32));
7396                 }
7397         } else
7398                 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
7399 }
7400
7401 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
7402 {
7403         struct iscsi_cls_session *cls_sess;
7404         struct iscsi_session *sess;
7405         struct ddb_entry *ddb;
7406         int queue_depth = QL4_DEF_QDEPTH;
7407
7408         cls_sess = starget_to_session(sdev->sdev_target);
7409         sess = cls_sess->dd_data;
7410         ddb = sess->dd_data;
7411
7412         sdev->hostdata = ddb;
7413         sdev->tagged_supported = 1;
7414
7415         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
7416                 queue_depth = ql4xmaxqdepth;
7417
7418         scsi_activate_tcq(sdev, queue_depth);
7419         return 0;
7420 }
7421
7422 static int qla4xxx_slave_configure(struct scsi_device *sdev)
7423 {
7424         sdev->tagged_supported = 1;
7425         return 0;
7426 }
7427
7428 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
7429 {
7430         scsi_deactivate_tcq(sdev, 1);
7431 }
7432
7433 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
7434                                       int reason)
7435 {
7436         if (!ql4xqfulltracking)
7437                 return -EOPNOTSUPP;
7438
7439         return iscsi_change_queue_depth(sdev, qdepth, reason);
7440 }
7441
7442 /**
7443  * qla4xxx_del_from_active_array - returns an active srb
7444  * @ha: Pointer to host adapter structure.
7445  * @index: index into the active_array
7446  *
7447  * This routine removes and returns the srb at the specified index
7448  **/
7449 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
7450     uint32_t index)
7451 {
7452         struct srb *srb = NULL;
7453         struct scsi_cmnd *cmd = NULL;
7454
7455         cmd = scsi_host_find_tag(ha->host, index);
7456         if (!cmd)
7457                 return srb;
7458
7459         srb = (struct srb *)CMD_SP(cmd);
7460         if (!srb)
7461                 return srb;
7462
7463         /* update counters */
7464         if (srb->flags & SRB_DMA_VALID) {
7465                 ha->iocb_cnt -= srb->iocb_cnt;
7466                 if (srb->cmd)
7467                         srb->cmd->host_scribble =
7468                                 (unsigned char *)(unsigned long) MAX_SRBS;
7469         }
7470         return srb;
7471 }
7472
7473 /**
7474  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
7475  * @ha: Pointer to host adapter structure.
7476  * @cmd: Scsi Command to wait on.
7477  *
7478  * This routine waits for the command to be returned by the Firmware
7479  * for some max time.
7480  **/
7481 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
7482                                       struct scsi_cmnd *cmd)
7483 {
7484         int done = 0;
7485         struct srb *rp;
7486         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
7487         int ret = SUCCESS;
7488
7489         /* Dont wait on command if PCI error is being handled
7490          * by PCI AER driver
7491          */
7492         if (unlikely(pci_channel_offline(ha->pdev)) ||
7493             (test_bit(AF_EEH_BUSY, &ha->flags))) {
7494                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
7495                     ha->host_no, __func__);
7496                 return ret;
7497         }
7498
7499         do {
7500                 /* Checking to see if its returned to OS */
7501                 rp = (struct srb *) CMD_SP(cmd);
7502                 if (rp == NULL) {
7503                         done++;
7504                         break;
7505                 }
7506
7507                 msleep(2000);
7508         } while (max_wait_time--);
7509
7510         return done;
7511 }
7512
7513 /**
7514  * qla4xxx_wait_for_hba_online - waits for HBA to come online
7515  * @ha: Pointer to host adapter structure
7516  **/
7517 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
7518 {
7519         unsigned long wait_online;
7520
7521         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
7522         while (time_before(jiffies, wait_online)) {
7523
7524                 if (adapter_up(ha))
7525                         return QLA_SUCCESS;
7526
7527                 msleep(2000);
7528         }
7529
7530         return QLA_ERROR;
7531 }
7532
7533 /**
7534  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
7535  * @ha: pointer to HBA
7536  * @t: target id
7537  * @l: lun id
7538  *
7539  * This function waits for all outstanding commands to a lun to complete. It
7540  * returns 0 if all pending commands are returned and 1 otherwise.
7541  **/
7542 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
7543                                         struct scsi_target *stgt,
7544                                         struct scsi_device *sdev)
7545 {
7546         int cnt;
7547         int status = 0;
7548         struct scsi_cmnd *cmd;
7549
7550         /*
7551          * Waiting for all commands for the designated target or dev
7552          * in the active array
7553          */
7554         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
7555                 cmd = scsi_host_find_tag(ha->host, cnt);
7556                 if (cmd && stgt == scsi_target(cmd->device) &&
7557                     (!sdev || sdev == cmd->device)) {
7558                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
7559                                 status++;
7560                                 break;
7561                         }
7562                 }
7563         }
7564         return status;
7565 }
7566
7567 /**
7568  * qla4xxx_eh_abort - callback for abort task.
7569  * @cmd: Pointer to Linux's SCSI command structure
7570  *
7571  * This routine is called by the Linux OS to abort the specified
7572  * command.
7573  **/
7574 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
7575 {
7576         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7577         unsigned int id = cmd->device->id;
7578         unsigned int lun = cmd->device->lun;
7579         unsigned long flags;
7580         struct srb *srb = NULL;
7581         int ret = SUCCESS;
7582         int wait = 0;
7583
7584         ql4_printk(KERN_INFO, ha,
7585             "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
7586             ha->host_no, id, lun, cmd);
7587
7588         spin_lock_irqsave(&ha->hardware_lock, flags);
7589         srb = (struct srb *) CMD_SP(cmd);
7590         if (!srb) {
7591                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7592                 return SUCCESS;
7593         }
7594         kref_get(&srb->srb_ref);
7595         spin_unlock_irqrestore(&ha->hardware_lock, flags);
7596
7597         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
7598                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
7599                     ha->host_no, id, lun));
7600                 ret = FAILED;
7601         } else {
7602                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
7603                     ha->host_no, id, lun));
7604                 wait = 1;
7605         }
7606
7607         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
7608
7609         /* Wait for command to complete */
7610         if (wait) {
7611                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
7612                         DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
7613                             ha->host_no, id, lun));
7614                         ret = FAILED;
7615                 }
7616         }
7617
7618         ql4_printk(KERN_INFO, ha,
7619             "scsi%ld:%d:%d: Abort command - %s\n",
7620             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
7621
7622         return ret;
7623 }
7624
7625 /**
7626  * qla4xxx_eh_device_reset - callback for target reset.
7627  * @cmd: Pointer to Linux's SCSI command structure
7628  *
7629  * This routine is called by the Linux OS to reset all luns on the
7630  * specified target.
7631  **/
7632 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
7633 {
7634         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7635         struct ddb_entry *ddb_entry = cmd->device->hostdata;
7636         int ret = FAILED, stat;
7637
7638         if (!ddb_entry)
7639                 return ret;
7640
7641         ret = iscsi_block_scsi_eh(cmd);
7642         if (ret)
7643                 return ret;
7644         ret = FAILED;
7645
7646         ql4_printk(KERN_INFO, ha,
7647                    "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
7648                    cmd->device->channel, cmd->device->id, cmd->device->lun);
7649
7650         DEBUG2(printk(KERN_INFO
7651                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
7652                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
7653                       cmd, jiffies, cmd->request->timeout / HZ,
7654                       ha->dpc_flags, cmd->result, cmd->allowed));
7655
7656         /* FIXME: wait for hba to go online */
7657         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
7658         if (stat != QLA_SUCCESS) {
7659                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
7660                 goto eh_dev_reset_done;
7661         }
7662
7663         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
7664                                          cmd->device)) {
7665                 ql4_printk(KERN_INFO, ha,
7666                            "DEVICE RESET FAILED - waiting for "
7667                            "commands.\n");
7668                 goto eh_dev_reset_done;
7669         }
7670
7671         /* Send marker. */
7672         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
7673                 MM_LUN_RESET) != QLA_SUCCESS)
7674                 goto eh_dev_reset_done;
7675
7676         ql4_printk(KERN_INFO, ha,
7677                    "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
7678                    ha->host_no, cmd->device->channel, cmd->device->id,
7679                    cmd->device->lun);
7680
7681         ret = SUCCESS;
7682
7683 eh_dev_reset_done:
7684
7685         return ret;
7686 }
7687
7688 /**
7689  * qla4xxx_eh_target_reset - callback for target reset.
7690  * @cmd: Pointer to Linux's SCSI command structure
7691  *
7692  * This routine is called by the Linux OS to reset the target.
7693  **/
7694 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
7695 {
7696         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7697         struct ddb_entry *ddb_entry = cmd->device->hostdata;
7698         int stat, ret;
7699
7700         if (!ddb_entry)
7701                 return FAILED;
7702
7703         ret = iscsi_block_scsi_eh(cmd);
7704         if (ret)
7705                 return ret;
7706
7707         starget_printk(KERN_INFO, scsi_target(cmd->device),
7708                        "WARM TARGET RESET ISSUED.\n");
7709
7710         DEBUG2(printk(KERN_INFO
7711                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
7712                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
7713                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
7714                       ha->dpc_flags, cmd->result, cmd->allowed));
7715
7716         stat = qla4xxx_reset_target(ha, ddb_entry);
7717         if (stat != QLA_SUCCESS) {
7718                 starget_printk(KERN_INFO, scsi_target(cmd->device),
7719                                "WARM TARGET RESET FAILED.\n");
7720                 return FAILED;
7721         }
7722
7723         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
7724                                          NULL)) {
7725                 starget_printk(KERN_INFO, scsi_target(cmd->device),
7726                                "WARM TARGET DEVICE RESET FAILED - "
7727                                "waiting for commands.\n");
7728                 return FAILED;
7729         }
7730
7731         /* Send marker. */
7732         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
7733                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
7734                 starget_printk(KERN_INFO, scsi_target(cmd->device),
7735                                "WARM TARGET DEVICE RESET FAILED - "
7736                                "marker iocb failed.\n");
7737                 return FAILED;
7738         }
7739
7740         starget_printk(KERN_INFO, scsi_target(cmd->device),
7741                        "WARM TARGET RESET SUCCEEDED.\n");
7742         return SUCCESS;
7743 }
7744
7745 /**
7746  * qla4xxx_is_eh_active - check if error handler is running
7747  * @shost: Pointer to SCSI Host struct
7748  *
7749  * This routine finds that if reset host is called in EH
7750  * scenario or from some application like sg_reset
7751  **/
7752 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
7753 {
7754         if (shost->shost_state == SHOST_RECOVERY)
7755                 return 1;
7756         return 0;
7757 }
7758
7759 /**
7760  * qla4xxx_eh_host_reset - kernel callback
7761  * @cmd: Pointer to Linux's SCSI command structure
7762  *
7763  * This routine is invoked by the Linux kernel to perform fatal error
7764  * recovery on the specified adapter.
7765  **/
7766 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
7767 {
7768         int return_status = FAILED;
7769         struct scsi_qla_host *ha;
7770
7771         ha = to_qla_host(cmd->device->host);
7772
7773         if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
7774                 qla4_83xx_set_idc_dontreset(ha);
7775
7776         /*
7777          * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
7778          * protocol drivers, we should not set device_state to NEED_RESET
7779          */
7780         if (ql4xdontresethba ||
7781             ((is_qla8032(ha) || is_qla8042(ha)) &&
7782              qla4_83xx_idc_dontreset(ha))) {
7783                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
7784                      ha->host_no, __func__));
7785
7786                 /* Clear outstanding srb in queues */
7787                 if (qla4xxx_is_eh_active(cmd->device->host))
7788                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
7789
7790                 return FAILED;
7791         }
7792
7793         ql4_printk(KERN_INFO, ha,
7794                    "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
7795                    cmd->device->channel, cmd->device->id, cmd->device->lun);
7796
7797         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
7798                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
7799                               "DEAD.\n", ha->host_no, cmd->device->channel,
7800                               __func__));
7801
7802                 return FAILED;
7803         }
7804
7805         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7806                 if (is_qla80XX(ha))
7807                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
7808                 else
7809                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
7810         }
7811
7812         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
7813                 return_status = SUCCESS;
7814
7815         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
7816                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
7817
7818         return return_status;
7819 }
7820
7821 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
7822 {
7823         uint32_t mbox_cmd[MBOX_REG_COUNT];
7824         uint32_t mbox_sts[MBOX_REG_COUNT];
7825         struct addr_ctrl_blk_def *acb = NULL;
7826         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
7827         int rval = QLA_SUCCESS;
7828         dma_addr_t acb_dma;
7829
7830         acb = dma_alloc_coherent(&ha->pdev->dev,
7831                                  sizeof(struct addr_ctrl_blk_def),
7832                                  &acb_dma, GFP_KERNEL);
7833         if (!acb) {
7834                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
7835                            __func__);
7836                 rval = -ENOMEM;
7837                 goto exit_port_reset;
7838         }
7839
7840         memset(acb, 0, acb_len);
7841
7842         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
7843         if (rval != QLA_SUCCESS) {
7844                 rval = -EIO;
7845                 goto exit_free_acb;
7846         }
7847
7848         rval = qla4xxx_disable_acb(ha);
7849         if (rval != QLA_SUCCESS) {
7850                 rval = -EIO;
7851                 goto exit_free_acb;
7852         }
7853
7854         wait_for_completion_timeout(&ha->disable_acb_comp,
7855                                     DISABLE_ACB_TOV * HZ);
7856
7857         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
7858         if (rval != QLA_SUCCESS) {
7859                 rval = -EIO;
7860                 goto exit_free_acb;
7861         }
7862
7863 exit_free_acb:
7864         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
7865                           acb, acb_dma);
7866 exit_port_reset:
7867         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
7868                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
7869         return rval;
7870 }
7871
7872 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
7873 {
7874         struct scsi_qla_host *ha = to_qla_host(shost);
7875         int rval = QLA_SUCCESS;
7876         uint32_t idc_ctrl;
7877
7878         if (ql4xdontresethba) {
7879                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
7880                                   __func__));
7881                 rval = -EPERM;
7882                 goto exit_host_reset;
7883         }
7884
7885         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
7886                 goto recover_adapter;
7887
7888         switch (reset_type) {
7889         case SCSI_ADAPTER_RESET:
7890                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
7891                 break;
7892         case SCSI_FIRMWARE_RESET:
7893                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7894                         if (is_qla80XX(ha))
7895                                 /* set firmware context reset */
7896                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
7897                                         &ha->dpc_flags);
7898                         else {
7899                                 rval = qla4xxx_context_reset(ha);
7900                                 goto exit_host_reset;
7901                         }
7902                 }
7903                 break;
7904         }
7905
7906 recover_adapter:
7907         /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
7908          * reset is issued by application */
7909         if ((is_qla8032(ha) || is_qla8042(ha)) &&
7910             test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7911                 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
7912                 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
7913                                  (idc_ctrl | GRACEFUL_RESET_BIT1));
7914         }
7915
7916         rval = qla4xxx_recover_adapter(ha);
7917         if (rval != QLA_SUCCESS) {
7918                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
7919                                   __func__));
7920                 rval = -EIO;
7921         }
7922
7923 exit_host_reset:
7924         return rval;
7925 }
7926
7927 /* PCI AER driver recovers from all correctable errors w/o
7928  * driver intervention. For uncorrectable errors PCI AER
7929  * driver calls the following device driver's callbacks
7930  *
7931  * - Fatal Errors - link_reset
7932  * - Non-Fatal Errors - driver's pci_error_detected() which
7933  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
7934  *
7935  * PCI AER driver calls
7936  * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
7937  *               returns RECOVERED or NEED_RESET if fw_hung
7938  * NEED_RESET - driver's slot_reset()
7939  * DISCONNECT - device is dead & cannot recover
7940  * RECOVERED - driver's pci_resume()
7941  */
7942 static pci_ers_result_t
7943 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
7944 {
7945         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
7946
7947         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
7948             ha->host_no, __func__, state);
7949
7950         if (!is_aer_supported(ha))
7951                 return PCI_ERS_RESULT_NONE;
7952
7953         switch (state) {
7954         case pci_channel_io_normal:
7955                 clear_bit(AF_EEH_BUSY, &ha->flags);
7956                 return PCI_ERS_RESULT_CAN_RECOVER;
7957         case pci_channel_io_frozen:
7958                 set_bit(AF_EEH_BUSY, &ha->flags);
7959                 qla4xxx_mailbox_premature_completion(ha);
7960                 qla4xxx_free_irqs(ha);
7961                 pci_disable_device(pdev);
7962                 /* Return back all IOs */
7963                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
7964                 return PCI_ERS_RESULT_NEED_RESET;
7965         case pci_channel_io_perm_failure:
7966                 set_bit(AF_EEH_BUSY, &ha->flags);
7967                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
7968                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
7969                 return PCI_ERS_RESULT_DISCONNECT;
7970         }
7971         return PCI_ERS_RESULT_NEED_RESET;
7972 }
7973
7974 /**
7975  * qla4xxx_pci_mmio_enabled() gets called if
7976  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
7977  * and read/write to the device still works.
7978  **/
7979 static pci_ers_result_t
7980 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
7981 {
7982         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
7983
7984         if (!is_aer_supported(ha))
7985                 return PCI_ERS_RESULT_NONE;
7986
7987         return PCI_ERS_RESULT_RECOVERED;
7988 }
7989
7990 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
7991 {
7992         uint32_t rval = QLA_ERROR;
7993         int fn;
7994         struct pci_dev *other_pdev = NULL;
7995
7996         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
7997
7998         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
7999
8000         if (test_bit(AF_ONLINE, &ha->flags)) {
8001                 clear_bit(AF_ONLINE, &ha->flags);
8002                 clear_bit(AF_LINK_UP, &ha->flags);
8003                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
8004                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
8005         }
8006
8007         fn = PCI_FUNC(ha->pdev->devfn);
8008         while (fn > 0) {
8009                 fn--;
8010                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
8011                     "func %x\n", ha->host_no, __func__, fn);
8012                 /* Get the pci device given the domain, bus,
8013                  * slot/function number */
8014                 other_pdev =
8015                     pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8016                     ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8017                     fn));
8018
8019                 if (!other_pdev)
8020                         continue;
8021
8022                 if (atomic_read(&other_pdev->enable_cnt)) {
8023                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
8024                             "func in enabled state%x\n", ha->host_no,
8025                             __func__, fn);
8026                         pci_dev_put(other_pdev);
8027                         break;
8028                 }
8029                 pci_dev_put(other_pdev);
8030         }
8031
8032         /* The first function on the card, the reset owner will
8033          * start & initialize the firmware. The other functions
8034          * on the card will reset the firmware context
8035          */
8036         if (!fn) {
8037                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
8038                     "0x%x is the owner\n", ha->host_no, __func__,
8039                     ha->pdev->devfn);
8040
8041                 ha->isp_ops->idc_lock(ha);
8042                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8043                                     QLA8XXX_DEV_COLD);
8044                 ha->isp_ops->idc_unlock(ha);
8045
8046                 rval = qla4_8xxx_update_idc_reg(ha);
8047                 if (rval == QLA_ERROR) {
8048                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
8049                                    ha->host_no, __func__);
8050                         ha->isp_ops->idc_lock(ha);
8051                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8052                                             QLA8XXX_DEV_FAILED);
8053                         ha->isp_ops->idc_unlock(ha);
8054                         goto exit_error_recovery;
8055                 }
8056
8057                 clear_bit(AF_FW_RECOVERY, &ha->flags);
8058                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
8059
8060                 if (rval != QLA_SUCCESS) {
8061                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
8062                             "FAILED\n", ha->host_no, __func__);
8063                         ha->isp_ops->idc_lock(ha);
8064                         qla4_8xxx_clear_drv_active(ha);
8065                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8066                                             QLA8XXX_DEV_FAILED);
8067                         ha->isp_ops->idc_unlock(ha);
8068                 } else {
8069                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
8070                             "READY\n", ha->host_no, __func__);
8071                         ha->isp_ops->idc_lock(ha);
8072                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8073                                             QLA8XXX_DEV_READY);
8074                         /* Clear driver state register */
8075                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
8076                         qla4_8xxx_set_drv_active(ha);
8077                         ha->isp_ops->idc_unlock(ha);
8078                         ha->isp_ops->enable_intrs(ha);
8079                 }
8080         } else {
8081                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
8082                     "the reset owner\n", ha->host_no, __func__,
8083                     ha->pdev->devfn);
8084                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
8085                      QLA8XXX_DEV_READY)) {
8086                         clear_bit(AF_FW_RECOVERY, &ha->flags);
8087                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
8088                         if (rval == QLA_SUCCESS)
8089                                 ha->isp_ops->enable_intrs(ha);
8090
8091                         ha->isp_ops->idc_lock(ha);
8092                         qla4_8xxx_set_drv_active(ha);
8093                         ha->isp_ops->idc_unlock(ha);
8094                 }
8095         }
8096 exit_error_recovery:
8097         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
8098         return rval;
8099 }
8100
8101 static pci_ers_result_t
8102 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
8103 {
8104         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
8105         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
8106         int rc;
8107
8108         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
8109             ha->host_no, __func__);
8110
8111         if (!is_aer_supported(ha))
8112                 return PCI_ERS_RESULT_NONE;
8113
8114         /* Restore the saved state of PCIe device -
8115          * BAR registers, PCI Config space, PCIX, MSI,
8116          * IOV states
8117          */
8118         pci_restore_state(pdev);
8119
8120         /* pci_restore_state() clears the saved_state flag of the device
8121          * save restored state which resets saved_state flag
8122          */
8123         pci_save_state(pdev);
8124
8125         /* Initialize device or resume if in suspended state */
8126         rc = pci_enable_device(pdev);
8127         if (rc) {
8128                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
8129                     "device after reset\n", ha->host_no, __func__);
8130                 goto exit_slot_reset;
8131         }
8132
8133         ha->isp_ops->disable_intrs(ha);
8134
8135         if (is_qla80XX(ha)) {
8136                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
8137                         ret = PCI_ERS_RESULT_RECOVERED;
8138                         goto exit_slot_reset;
8139                 } else
8140                         goto exit_slot_reset;
8141         }
8142
8143 exit_slot_reset:
8144         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
8145             "device after reset\n", ha->host_no, __func__, ret);
8146         return ret;
8147 }
8148
8149 static void
8150 qla4xxx_pci_resume(struct pci_dev *pdev)
8151 {
8152         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
8153         int ret;
8154
8155         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
8156             ha->host_no, __func__);
8157
8158         ret = qla4xxx_wait_for_hba_online(ha);
8159         if (ret != QLA_SUCCESS) {
8160                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
8161                     "resume I/O from slot/link_reset\n", ha->host_no,
8162                      __func__);
8163         }
8164
8165         pci_cleanup_aer_uncorrect_error_status(pdev);
8166         clear_bit(AF_EEH_BUSY, &ha->flags);
8167 }
8168
8169 static const struct pci_error_handlers qla4xxx_err_handler = {
8170         .error_detected = qla4xxx_pci_error_detected,
8171         .mmio_enabled = qla4xxx_pci_mmio_enabled,
8172         .slot_reset = qla4xxx_pci_slot_reset,
8173         .resume = qla4xxx_pci_resume,
8174 };
8175
8176 static struct pci_device_id qla4xxx_pci_tbl[] = {
8177         {
8178                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8179                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
8180                 .subvendor      = PCI_ANY_ID,
8181                 .subdevice      = PCI_ANY_ID,
8182         },
8183         {
8184                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8185                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
8186                 .subvendor      = PCI_ANY_ID,
8187                 .subdevice      = PCI_ANY_ID,
8188         },
8189         {
8190                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8191                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
8192                 .subvendor      = PCI_ANY_ID,
8193                 .subdevice      = PCI_ANY_ID,
8194         },
8195         {
8196                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8197                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
8198                 .subvendor      = PCI_ANY_ID,
8199                 .subdevice      = PCI_ANY_ID,
8200         },
8201         {
8202                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8203                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
8204                 .subvendor      = PCI_ANY_ID,
8205                 .subdevice      = PCI_ANY_ID,
8206         },
8207         {
8208                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8209                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8042,
8210                 .subvendor      = PCI_ANY_ID,
8211                 .subdevice      = PCI_ANY_ID,
8212         },
8213         {0, 0},
8214 };
8215 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
8216
8217 static struct pci_driver qla4xxx_pci_driver = {
8218         .name           = DRIVER_NAME,
8219         .id_table       = qla4xxx_pci_tbl,
8220         .probe          = qla4xxx_probe_adapter,
8221         .remove         = qla4xxx_remove_adapter,
8222         .err_handler = &qla4xxx_err_handler,
8223 };
8224
8225 static int __init qla4xxx_module_init(void)
8226 {
8227         int ret;
8228
8229         /* Allocate cache for SRBs. */
8230         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
8231                                        SLAB_HWCACHE_ALIGN, NULL);
8232         if (srb_cachep == NULL) {
8233                 printk(KERN_ERR
8234                        "%s: Unable to allocate SRB cache..."
8235                        "Failing load!\n", DRIVER_NAME);
8236                 ret = -ENOMEM;
8237                 goto no_srp_cache;
8238         }
8239
8240         /* Derive version string. */
8241         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
8242         if (ql4xextended_error_logging)
8243                 strcat(qla4xxx_version_str, "-debug");
8244
8245         qla4xxx_scsi_transport =
8246                 iscsi_register_transport(&qla4xxx_iscsi_transport);
8247         if (!qla4xxx_scsi_transport){
8248                 ret = -ENODEV;
8249                 goto release_srb_cache;
8250         }
8251
8252         ret = pci_register_driver(&qla4xxx_pci_driver);
8253         if (ret)
8254                 goto unregister_transport;
8255
8256         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
8257         return 0;
8258
8259 unregister_transport:
8260         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
8261 release_srb_cache:
8262         kmem_cache_destroy(srb_cachep);
8263 no_srp_cache:
8264         return ret;
8265 }
8266
8267 static void __exit qla4xxx_module_exit(void)
8268 {
8269         pci_unregister_driver(&qla4xxx_pci_driver);
8270         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
8271         kmem_cache_destroy(srb_cachep);
8272 }
8273
8274 module_init(qla4xxx_module_init);
8275 module_exit(qla4xxx_module_exit);
8276
8277 MODULE_AUTHOR("QLogic Corporation");
8278 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
8279 MODULE_LICENSE("GPL");
8280 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);