drivers/scsi/qla4xxx/ql4_os.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2013 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7 #include <linux/moduleparam.h>
   8 #include <linux/slab.h>
   9 #include <linux/blkdev.h>
  10 #include <linux/iscsi_boot_sysfs.h>
  11 #include <linux/inet.h>
  12
  13 #include <scsi/scsi_tcq.h>
  14 #include <scsi/scsicam.h>
  15
  16 #include "ql4_def.h"
  17 #include "ql4_version.h"
  18 #include "ql4_glbl.h"
  19 #include "ql4_dbg.h"
  20 #include "ql4_inline.h"
  21 #include "ql4_83xx.h"
  22
  23 /*
  24  * Driver version
  25  */
  26 static char qla4xxx_version_str[40];
  27
  28 /*
  29  * SRB allocation cache
  30  */
  31 static struct kmem_cache *srb_cachep;
  32
  33 /*
  34  * Module parameter information and variables
  35  */
  36 static int ql4xdisablesysfsboot = 1;
  37 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
  38 MODULE_PARM_DESC(ql4xdisablesysfsboot,
  39                  " Set to disable exporting boot targets to sysfs.\n"
  40                  "\t\t  0 - Export boot targets\n"
  41                  "\t\t  1 - Do not export boot targets (Default)");
  42
  43 int ql4xdontresethba;
  44 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
  45 MODULE_PARM_DESC(ql4xdontresethba,
  46                  " Don't reset the HBA for driver recovery.\n"
  47                  "\t\t  0 - It will reset HBA (Default)\n"
  48                  "\t\t  1 - It will NOT reset HBA");
  49
  50 int ql4xextended_error_logging;
  51 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
  52 MODULE_PARM_DESC(ql4xextended_error_logging,
  53                  " Option to enable extended error logging.\n"
  54                  "\t\t  0 - no logging (Default)\n"
  55                  "\t\t  2 - debug logging");
  56
  57 int ql4xenablemsix = 1;
  58 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
  59 MODULE_PARM_DESC(ql4xenablemsix,
  60                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
  61                  "\t\t  0 = enable INTx interrupt mechanism.\n"
  62                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
  63                  "\t\t  2 = enable MSI interrupt mechanism.");
  64
  65 #define QL4_DEF_QDEPTH 32
  66 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
  67 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
  68 MODULE_PARM_DESC(ql4xmaxqdepth,
  69                  " Maximum queue depth to report for target devices.\n"
  70                  "\t\t  Default: 32.");
  71
  72 static int ql4xqfulltracking = 1;
  73 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
  74 MODULE_PARM_DESC(ql4xqfulltracking,
  75                  " Enable or disable dynamic tracking and adjustment of\n"
  76                  "\t\t scsi device queue depth.\n"
  77                  "\t\t  0 - Disable.\n"
  78                  "\t\t  1 - Enable. (Default)");
  79
  80 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
  81 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
  82 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
  83                 " Target Session Recovery Timeout.\n"
  84                 "\t\t  Default: 120 sec.");
  85
  86 int ql4xmdcapmask = 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 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
 153                                   int len);
 154
 155 /*
 156  * SCSI host template entry points
 157  */
 158 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 159 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 160 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 161 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 162 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 163 static int qla4xxx_slave_alloc(struct scsi_device *device);
 164 static int qla4xxx_slave_configure(struct scsi_device *device);
 165 static void qla4xxx_slave_destroy(struct scsi_device *sdev);
 166 static umode_t qla4_attr_is_visible(int param_type, int param);
 167 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 168 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
 169                                       int reason);
 170
 171 /*
 172  * iSCSI Flash DDB sysfs entry points
 173  */
 174 static int
 175 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
 176                             struct iscsi_bus_flash_conn *fnode_conn,
 177                             void *data, int len);
 178 static int
 179 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 180                             int param, char *buf);
 181 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 182                                  int len);
 183 static int
 184 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
 185 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
 186                                    struct iscsi_bus_flash_conn *fnode_conn);
 187 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 188                                     struct iscsi_bus_flash_conn *fnode_conn);
 189 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 190
 191 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 192     QLA82XX_LEGACY_INTR_CONFIG;
 193
 194 static struct scsi_host_template qla4xxx_driver_template = {
 195         .module                 = THIS_MODULE,
 196         .name                   = DRIVER_NAME,
 197         .proc_name              = DRIVER_NAME,
 198         .queuecommand           = qla4xxx_queuecommand,
 199
 200         .eh_abort_handler       = qla4xxx_eh_abort,
 201         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 202         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 203         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 204         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 205
 206         .slave_configure        = qla4xxx_slave_configure,
 207         .slave_alloc            = qla4xxx_slave_alloc,
 208         .slave_destroy          = qla4xxx_slave_destroy,
 209         .change_queue_depth     = qla4xxx_change_queue_depth,
 210
 211         .this_id                = -1,
 212         .cmd_per_lun            = 3,
 213         .use_clustering         = ENABLE_CLUSTERING,
 214         .sg_tablesize           = SG_ALL,
 215
 216         .max_sectors            = 0xFFFF,
 217         .shost_attrs            = qla4xxx_host_attrs,
 218         .host_reset             = qla4xxx_host_reset,
 219         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 220 };
 221
 222 static struct iscsi_transport qla4xxx_iscsi_transport = {
 223         .owner                  = THIS_MODULE,
 224         .name                   = DRIVER_NAME,
 225         .caps                   = CAP_TEXT_NEGO |
 226                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 227                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 228                                   CAP_MULTI_R2T,
 229         .attr_is_visible        = qla4_attr_is_visible,
 230         .create_session         = qla4xxx_session_create,
 231         .destroy_session        = qla4xxx_session_destroy,
 232         .start_conn             = qla4xxx_conn_start,
 233         .create_conn            = qla4xxx_conn_create,
 234         .bind_conn              = qla4xxx_conn_bind,
 235         .stop_conn              = iscsi_conn_stop,
 236         .destroy_conn           = qla4xxx_conn_destroy,
 237         .set_param              = iscsi_set_param,
 238         .get_conn_param         = qla4xxx_conn_get_param,
 239         .get_session_param      = qla4xxx_session_get_param,
 240         .get_ep_param           = qla4xxx_get_ep_param,
 241         .ep_connect             = qla4xxx_ep_connect,
 242         .ep_poll                = qla4xxx_ep_poll,
 243         .ep_disconnect          = qla4xxx_ep_disconnect,
 244         .get_stats              = qla4xxx_conn_get_stats,
 245         .send_pdu               = iscsi_conn_send_pdu,
 246         .xmit_task              = qla4xxx_task_xmit,
 247         .cleanup_task           = qla4xxx_task_cleanup,
 248         .alloc_pdu              = qla4xxx_alloc_pdu,
 249
 250         .get_host_param         = qla4xxx_host_get_param,
 251         .set_iface_param        = qla4xxx_iface_set_param,
 252         .get_iface_param        = qla4xxx_get_iface_param,
 253         .bsg_request            = qla4xxx_bsg_request,
 254         .send_ping              = qla4xxx_send_ping,
 255         .get_chap               = qla4xxx_get_chap_list,
 256         .delete_chap            = qla4xxx_delete_chap,
 257         .set_chap               = qla4xxx_set_chap_entry,
 258         .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
 259         .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
 260         .new_flashnode          = qla4xxx_sysfs_ddb_add,
 261         .del_flashnode          = qla4xxx_sysfs_ddb_delete,
 262         .login_flashnode        = qla4xxx_sysfs_ddb_login,
 263         .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
 264         .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
 265 };
 266
 267 static struct scsi_transport_template *qla4xxx_scsi_transport;
 268
 269 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 270                              uint32_t iface_type, uint32_t payload_size,
 271                              uint32_t pid, struct sockaddr *dst_addr)
 272 {
 273         struct scsi_qla_host *ha = to_qla_host(shost);
 274         struct sockaddr_in *addr;
 275         struct sockaddr_in6 *addr6;
 276         uint32_t options = 0;
 277         uint8_t ipaddr[IPv6_ADDR_LEN];
 278         int rval;
 279
 280         memset(ipaddr, 0, IPv6_ADDR_LEN);
 281         /* IPv4 to IPv4 */
 282         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 283             (dst_addr->sa_family == AF_INET)) {
 284                 addr = (struct sockaddr_in *)dst_addr;
 285                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 286                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 287                                   "dest: %pI4\n", __func__,
 288                                   &ha->ip_config.ip_address, ipaddr));
 289                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 290                                          ipaddr);
 291                 if (rval)
 292                         rval = -EINVAL;
 293         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 294                    (dst_addr->sa_family == AF_INET6)) {
 295                 /* IPv6 to IPv6 */
 296                 addr6 = (struct sockaddr_in6 *)dst_addr;
 297                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 298
 299                 options |= PING_IPV6_PROTOCOL_ENABLE;
 300
 301                 /* Ping using LinkLocal address */
 302                 if ((iface_num == 0) || (iface_num == 1)) {
 303                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 304                                           "src: %pI6 dest: %pI6\n", __func__,
 305                                           &ha->ip_config.ipv6_link_local_addr,
 306                                           ipaddr));
 307                         options |= PING_IPV6_LINKLOCAL_ADDR;
 308                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 309                                                  pid, ipaddr);
 310                 } else {
 311                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 312                                    "not supported\n", __func__, iface_num);
 313                         rval = -ENOSYS;
 314                         goto exit_send_ping;
 315                 }
 316
 317                 /*
 318                  * If ping using LinkLocal address fails, try ping using
 319                  * IPv6 address
 320                  */
 321                 if (rval != QLA_SUCCESS) {
 322                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 323                         if (iface_num == 0) {
 324                                 options |= PING_IPV6_ADDR0;
 325                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 326                                                   "Ping src: %pI6 "
 327                                                   "dest: %pI6\n", __func__,
 328                                                   &ha->ip_config.ipv6_addr0,
 329                                                   ipaddr));
 330                         } else if (iface_num == 1) {
 331                                 options |= PING_IPV6_ADDR1;
 332                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 333                                                   "Ping src: %pI6 "
 334                                                   "dest: %pI6\n", __func__,
 335                                                   &ha->ip_config.ipv6_addr1,
 336                                                   ipaddr));
 337                         }
 338                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 339                                                  pid, ipaddr);
 340                         if (rval)
 341                                 rval = -EINVAL;
 342                 }
 343         } else
 344                 rval = -ENOSYS;
 345 exit_send_ping:
 346         return rval;
 347 }
 348
 349 static umode_t qla4_attr_is_visible(int param_type, int param)
 350 {
 351         switch (param_type) {
 352         case ISCSI_HOST_PARAM:
 353                 switch (param) {
 354                 case ISCSI_HOST_PARAM_HWADDRESS:
 355                 case ISCSI_HOST_PARAM_IPADDRESS:
 356                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 357                 case ISCSI_HOST_PARAM_PORT_STATE:
 358                 case ISCSI_HOST_PARAM_PORT_SPEED:
 359                         return S_IRUGO;
 360                 default:
 361                         return 0;
 362                 }
 363         case ISCSI_PARAM:
 364                 switch (param) {
 365                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 366                 case ISCSI_PARAM_PERSISTENT_PORT:
 367                 case ISCSI_PARAM_CONN_ADDRESS:
 368                 case ISCSI_PARAM_CONN_PORT:
 369                 case ISCSI_PARAM_TARGET_NAME:
 370                 case ISCSI_PARAM_TPGT:
 371                 case ISCSI_PARAM_TARGET_ALIAS:
 372                 case ISCSI_PARAM_MAX_BURST:
 373                 case ISCSI_PARAM_MAX_R2T:
 374                 case ISCSI_PARAM_FIRST_BURST:
 375                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 376                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 377                 case ISCSI_PARAM_IFACE_NAME:
 378                 case ISCSI_PARAM_CHAP_OUT_IDX:
 379                 case ISCSI_PARAM_CHAP_IN_IDX:
 380                 case ISCSI_PARAM_USERNAME:
 381                 case ISCSI_PARAM_PASSWORD:
 382                 case ISCSI_PARAM_USERNAME_IN:
 383                 case ISCSI_PARAM_PASSWORD_IN:
 384                 case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
 385                 case ISCSI_PARAM_DISCOVERY_SESS:
 386                 case ISCSI_PARAM_PORTAL_TYPE:
 387                 case ISCSI_PARAM_CHAP_AUTH_EN:
 388                 case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
 389                 case ISCSI_PARAM_BIDI_CHAP_EN:
 390                 case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
 391                 case ISCSI_PARAM_DEF_TIME2WAIT:
 392                 case ISCSI_PARAM_DEF_TIME2RETAIN:
 393                 case ISCSI_PARAM_HDRDGST_EN:
 394                 case ISCSI_PARAM_DATADGST_EN:
 395                 case ISCSI_PARAM_INITIAL_R2T_EN:
 396                 case ISCSI_PARAM_IMM_DATA_EN:
 397                 case ISCSI_PARAM_PDU_INORDER_EN:
 398                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
 399                 case ISCSI_PARAM_MAX_SEGMENT_SIZE:
 400                 case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
 401                 case ISCSI_PARAM_TCP_WSF_DISABLE:
 402                 case ISCSI_PARAM_TCP_NAGLE_DISABLE:
 403                 case ISCSI_PARAM_TCP_TIMER_SCALE:
 404                 case ISCSI_PARAM_TCP_TIMESTAMP_EN:
 405                 case ISCSI_PARAM_TCP_XMIT_WSF:
 406                 case ISCSI_PARAM_TCP_RECV_WSF:
 407                 case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
 408                 case ISCSI_PARAM_IPV4_TOS:
 409                 case ISCSI_PARAM_IPV6_TC:
 410                 case ISCSI_PARAM_IPV6_FLOW_LABEL:
 411                 case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
 412                 case ISCSI_PARAM_KEEPALIVE_TMO:
 413                 case ISCSI_PARAM_LOCAL_PORT:
 414                 case ISCSI_PARAM_ISID:
 415                 case ISCSI_PARAM_TSID:
 416                 case ISCSI_PARAM_DEF_TASKMGMT_TMO:
 417                 case ISCSI_PARAM_ERL:
 418                 case ISCSI_PARAM_STATSN:
 419                 case ISCSI_PARAM_EXP_STATSN:
 420                 case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
 421                 case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
 422                         return S_IRUGO;
 423                 default:
 424                         return 0;
 425                 }
 426         case ISCSI_NET_PARAM:
 427                 switch (param) {
 428                 case ISCSI_NET_PARAM_IPV4_ADDR:
 429                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 430                 case ISCSI_NET_PARAM_IPV4_GW:
 431                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 432                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 433                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 434                 case ISCSI_NET_PARAM_IPV6_ADDR:
 435                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 436                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 437                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 438                 case ISCSI_NET_PARAM_VLAN_ID:
 439                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 440                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 441                 case ISCSI_NET_PARAM_MTU:
 442                 case ISCSI_NET_PARAM_PORT:
 443                         return S_IRUGO;
 444                 default:
 445                         return 0;
 446                 }
 447         case ISCSI_FLASHNODE_PARAM:
 448                 switch (param) {
 449                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
 450                 case ISCSI_FLASHNODE_PORTAL_TYPE:
 451                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
 452                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
 453                 case ISCSI_FLASHNODE_ENTRY_EN:
 454                 case ISCSI_FLASHNODE_HDR_DGST_EN:
 455                 case ISCSI_FLASHNODE_DATA_DGST_EN:
 456                 case ISCSI_FLASHNODE_IMM_DATA_EN:
 457                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
 458                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
 459                 case ISCSI_FLASHNODE_PDU_INORDER:
 460                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
 461                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
 462                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
 463                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
 464                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
 465                 case ISCSI_FLASHNODE_ERL:
 466                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
 467                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
 468                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
 469                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
 470                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
 471                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
 472                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
 473                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
 474                 case ISCSI_FLASHNODE_FIRST_BURST:
 475                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
 476                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
 477                 case ISCSI_FLASHNODE_MAX_R2T:
 478                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
 479                 case ISCSI_FLASHNODE_ISID:
 480                 case ISCSI_FLASHNODE_TSID:
 481                 case ISCSI_FLASHNODE_PORT:
 482                 case ISCSI_FLASHNODE_MAX_BURST:
 483                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
 484                 case ISCSI_FLASHNODE_IPADDR:
 485                 case ISCSI_FLASHNODE_ALIAS:
 486                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
 487                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
 488                 case ISCSI_FLASHNODE_LOCAL_PORT:
 489                 case ISCSI_FLASHNODE_IPV4_TOS:
 490                 case ISCSI_FLASHNODE_IPV6_TC:
 491                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
 492                 case ISCSI_FLASHNODE_NAME:
 493                 case ISCSI_FLASHNODE_TPGT:
 494                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
 495                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
 496                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
 497                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
 498                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
 499                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
 500                 case ISCSI_FLASHNODE_USERNAME:
 501                 case ISCSI_FLASHNODE_PASSWORD:
 502                 case ISCSI_FLASHNODE_STATSN:
 503                 case ISCSI_FLASHNODE_EXP_STATSN:
 504                 case ISCSI_FLASHNODE_IS_BOOT_TGT:
 505                         return S_IRUGO;
 506                 default:
 507                         return 0;
 508                 }
 509         }
 510
 511         return 0;
 512 }
 513
 514 static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
 515                                      int16_t chap_index,
 516                                      struct ql4_chap_table **chap_entry)
 517 {
 518         int rval = QLA_ERROR;
 519         int max_chap_entries;
 520
 521         if (!ha->chap_list) {
 522                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 523                 rval = QLA_ERROR;
 524                 goto exit_get_chap;
 525         }
 526
 527         if (is_qla80XX(ha))
 528                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 529                                    sizeof(struct ql4_chap_table);
 530         else
 531                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 532
 533         if (chap_index > max_chap_entries) {
 534                 ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
 535                 rval = QLA_ERROR;
 536                 goto exit_get_chap;
 537         }
 538
 539         *chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
 540         if ((*chap_entry)->cookie !=
 541              __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
 542                 rval = QLA_ERROR;
 543                 *chap_entry = NULL;
 544         } else {
 545                 rval = QLA_SUCCESS;
 546         }
 547
 548 exit_get_chap:
 549         return rval;
 550 }
 551
 552 /**
 553  * qla4xxx_find_free_chap_index - Find the first free chap index
 554  * @ha: pointer to adapter structure
 555  * @chap_index: CHAP index to be returned
 556  *
 557  * Find the first free chap index available in the chap table
 558  *
 559  * Note: Caller should acquire the chap lock before getting here.
 560  **/
 561 static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
 562                                         uint16_t *chap_index)
 563 {
 564         int i, rval;
 565         int free_index = -1;
 566         int max_chap_entries = 0;
 567         struct ql4_chap_table *chap_table;
 568
 569         if (is_qla80XX(ha))
 570                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 571                                                 sizeof(struct ql4_chap_table);
 572         else
 573                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 574
 575         if (!ha->chap_list) {
 576                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 577                 rval = QLA_ERROR;
 578                 goto exit_find_chap;
 579         }
 580
 581         for (i = 0; i < max_chap_entries; i++) {
 582                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 583
 584                 if ((chap_table->cookie !=
 585                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
 586                    (i > MAX_RESRV_CHAP_IDX)) {
 587                                 free_index = i;
 588                                 break;
 589                 }
 590         }
 591
 592         if (free_index != -1) {
 593                 *chap_index = free_index;
 594                 rval = QLA_SUCCESS;
 595         } else {
 596                 rval = QLA_ERROR;
 597         }
 598
 599 exit_find_chap:
 600         return rval;
 601 }
 602
 603 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 604                                   uint32_t *num_entries, char *buf)
 605 {
 606         struct scsi_qla_host *ha = to_qla_host(shost);
 607         struct ql4_chap_table *chap_table;
 608         struct iscsi_chap_rec *chap_rec;
 609         int max_chap_entries = 0;
 610         int valid_chap_entries = 0;
 611         int ret = 0, i;
 612
 613         if (is_qla80XX(ha))
 614                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 615                                         sizeof(struct ql4_chap_table);
 616         else
 617                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 618
 619         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 620                         __func__, *num_entries, chap_tbl_idx);
 621
 622         if (!buf) {
 623                 ret = -ENOMEM;
 624                 goto exit_get_chap_list;
 625         }
 626
 627         chap_rec = (struct iscsi_chap_rec *) buf;
 628         mutex_lock(&ha->chap_sem);
 629         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 630                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 631                 if (chap_table->cookie !=
 632                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 633                         continue;
 634
 635                 chap_rec->chap_tbl_idx = i;
 636                 strncpy(chap_rec->username, chap_table->name,
 637                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 638                 strncpy(chap_rec->password, chap_table->secret,
 639                         QL4_CHAP_MAX_SECRET_LEN);
 640                 chap_rec->password_length = chap_table->secret_len;
 641
 642                 if (chap_table->flags & BIT_7) /* local */
 643                         chap_rec->chap_type = CHAP_TYPE_OUT;
 644
 645                 if (chap_table->flags & BIT_6) /* peer */
 646                         chap_rec->chap_type = CHAP_TYPE_IN;
 647
 648                 chap_rec++;
 649
 650                 valid_chap_entries++;
 651                 if (valid_chap_entries == *num_entries)
 652                         break;
 653                 else
 654                         continue;
 655         }
 656         mutex_unlock(&ha->chap_sem);
 657
 658 exit_get_chap_list:
 659         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 660                         __func__,  valid_chap_entries);
 661         *num_entries = valid_chap_entries;
 662         return ret;
 663 }
 664
 665 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 666 {
 667         int ret = 0;
 668         uint16_t *chap_tbl_idx = (uint16_t *) data;
 669         struct iscsi_cls_session *cls_session;
 670         struct iscsi_session *sess;
 671         struct ddb_entry *ddb_entry;
 672
 673         if (!iscsi_is_session_dev(dev))
 674                 goto exit_is_chap_active;
 675
 676         cls_session = iscsi_dev_to_session(dev);
 677         sess = cls_session->dd_data;
 678         ddb_entry = sess->dd_data;
 679
 680         if (iscsi_session_chkready(cls_session))
 681                 goto exit_is_chap_active;
 682
 683         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 684                 ret = 1;
 685
 686 exit_is_chap_active:
 687         return ret;
 688 }
 689
 690 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 691                                   uint16_t chap_tbl_idx)
 692 {
 693         int ret = 0;
 694
 695         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 696                                     __qla4xxx_is_chap_active);
 697
 698         return ret;
 699 }
 700
 701 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 702 {
 703         struct scsi_qla_host *ha = to_qla_host(shost);
 704         struct ql4_chap_table *chap_table;
 705         dma_addr_t chap_dma;
 706         int max_chap_entries = 0;
 707         uint32_t offset = 0;
 708         uint32_t chap_size;
 709         int ret = 0;
 710
 711         chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 712         if (chap_table == NULL)
 713                 return -ENOMEM;
 714
 715         memset(chap_table, 0, sizeof(struct ql4_chap_table));
 716
 717         if (is_qla80XX(ha))
 718                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 719                                    sizeof(struct ql4_chap_table);
 720         else
 721                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 722
 723         if (chap_tbl_idx > max_chap_entries) {
 724                 ret = -EINVAL;
 725                 goto exit_delete_chap;
 726         }
 727
 728         /* Check if chap index is in use.
 729          * If chap is in use don't delet chap entry */
 730         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 731         if (ret) {
 732                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 733                            "delete from flash\n", chap_tbl_idx);
 734                 ret = -EBUSY;
 735                 goto exit_delete_chap;
 736         }
 737
 738         chap_size = sizeof(struct ql4_chap_table);
 739         if (is_qla40XX(ha))
 740                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 741         else {
 742                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 743                 /* flt_chap_size is CHAP table size for both ports
 744                  * so divide it by 2 to calculate the offset for second port
 745                  */
 746                 if (ha->port_num == 1)
 747                         offset += (ha->hw.flt_chap_size / 2);
 748                 offset += (chap_tbl_idx * chap_size);
 749         }
 750
 751         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 752         if (ret != QLA_SUCCESS) {
 753                 ret = -EINVAL;
 754                 goto exit_delete_chap;
 755         }
 756
 757         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 758                           __le16_to_cpu(chap_table->cookie)));
 759
 760         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 761                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 762                 goto exit_delete_chap;
 763         }
 764
 765         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 766
 767         offset = FLASH_CHAP_OFFSET |
 768                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 769         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 770                                 FLASH_OPT_RMW_COMMIT);
 771         if (ret == QLA_SUCCESS && ha->chap_list) {
 772                 mutex_lock(&ha->chap_sem);
 773                 /* Update ha chap_list cache */
 774                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 775                         chap_table, sizeof(struct ql4_chap_table));
 776                 mutex_unlock(&ha->chap_sem);
 777         }
 778         if (ret != QLA_SUCCESS)
 779                 ret =  -EINVAL;
 780
 781 exit_delete_chap:
 782         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 783         return ret;
 784 }
 785
 786 /**
 787  * qla4xxx_set_chap_entry - Make chap entry with given information
 788  * @shost: pointer to host
 789  * @data: chap info - credentials, index and type to make chap entry
 790  * @len: length of data
 791  *
 792  * Add or update chap entry with the given information
 793  **/
 794 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
 795 {
 796         struct scsi_qla_host *ha = to_qla_host(shost);
 797         struct iscsi_chap_rec chap_rec;
 798         struct ql4_chap_table *chap_entry = NULL;
 799         struct iscsi_param_info *param_info;
 800         struct nlattr *attr;
 801         int max_chap_entries = 0;
 802         int type;
 803         int rem = len;
 804         int rc = 0;
 805
 806         memset(&chap_rec, 0, sizeof(chap_rec));
 807
 808         nla_for_each_attr(attr, data, len, rem) {
 809                 param_info = nla_data(attr);
 810
 811                 switch (param_info->param) {
 812                 case ISCSI_CHAP_PARAM_INDEX:
 813                         chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
 814                         break;
 815                 case ISCSI_CHAP_PARAM_CHAP_TYPE:
 816                         chap_rec.chap_type = param_info->value[0];
 817                         break;
 818                 case ISCSI_CHAP_PARAM_USERNAME:
 819                         memcpy(chap_rec.username, param_info->value,
 820                                param_info->len);
 821                         break;
 822                 case ISCSI_CHAP_PARAM_PASSWORD:
 823                         memcpy(chap_rec.password, param_info->value,
 824                                param_info->len);
 825                         break;
 826                 case ISCSI_CHAP_PARAM_PASSWORD_LEN:
 827                         chap_rec.password_length = param_info->value[0];
 828                         break;
 829                 default:
 830                         ql4_printk(KERN_ERR, ha,
 831                                    "%s: No such sysfs attribute\n", __func__);
 832                         rc = -ENOSYS;
 833                         goto exit_set_chap;
 834                 };
 835         }
 836
 837         if (chap_rec.chap_type == CHAP_TYPE_IN)
 838                 type = BIDI_CHAP;
 839         else
 840                 type = LOCAL_CHAP;
 841
 842         if (is_qla80XX(ha))
 843                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 844                                    sizeof(struct ql4_chap_table);
 845         else
 846                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 847
 848         mutex_lock(&ha->chap_sem);
 849         if (chap_rec.chap_tbl_idx < max_chap_entries) {
 850                 rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
 851                                                &chap_entry);
 852                 if (!rc) {
 853                         if (!(type == qla4xxx_get_chap_type(chap_entry))) {
 854                                 ql4_printk(KERN_INFO, ha,
 855                                            "Type mismatch for CHAP entry %d\n",
 856                                            chap_rec.chap_tbl_idx);
 857                                 rc = -EINVAL;
 858                                 goto exit_unlock_chap;
 859                         }
 860
 861                         /* If chap index is in use then don't modify it */
 862                         rc = qla4xxx_is_chap_active(shost,
 863                                                     chap_rec.chap_tbl_idx);
 864                         if (rc) {
 865                                 ql4_printk(KERN_INFO, ha,
 866                                            "CHAP entry %d is in use\n",
 867                                            chap_rec.chap_tbl_idx);
 868                                 rc = -EBUSY;
 869                                 goto exit_unlock_chap;
 870                         }
 871                 }
 872         } else {
 873                 rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
 874                 if (rc) {
 875                         ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
 876                         rc = -EBUSY;
 877                         goto exit_unlock_chap;
 878                 }
 879         }
 880
 881         rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
 882                               chap_rec.chap_tbl_idx, type);
 883
 884 exit_unlock_chap:
 885         mutex_unlock(&ha->chap_sem);
 886
 887 exit_set_chap:
 888         return rc;
 889 }
 890
 891 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 892                                    enum iscsi_param_type param_type,
 893                                    int param, char *buf)
 894 {
 895         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 896         struct scsi_qla_host *ha = to_qla_host(shost);
 897         int len = -ENOSYS;
 898
 899         if (param_type != ISCSI_NET_PARAM)
 900                 return -ENOSYS;
 901
 902         switch (param) {
 903         case ISCSI_NET_PARAM_IPV4_ADDR:
 904                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
 905                 break;
 906         case ISCSI_NET_PARAM_IPV4_SUBNET:
 907                 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
 908                 break;
 909         case ISCSI_NET_PARAM_IPV4_GW:
 910                 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
 911                 break;
 912         case ISCSI_NET_PARAM_IFACE_ENABLE:
 913                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 914                         len = sprintf(buf, "%s\n",
 915                                       (ha->ip_config.ipv4_options &
 916                                        IPOPT_IPV4_PROTOCOL_ENABLE) ?
 917                                       "enabled" : "disabled");
 918                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 919                         len = sprintf(buf, "%s\n",
 920                                       (ha->ip_config.ipv6_options &
 921                                        IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
 922                                        "enabled" : "disabled");
 923                 break;
 924         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 925                 len = sprintf(buf, "%s\n",
 926                               (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
 927                               "dhcp" : "static");
 928                 break;
 929         case ISCSI_NET_PARAM_IPV6_ADDR:
 930                 if (iface->iface_num == 0)
 931                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
 932                 if (iface->iface_num == 1)
 933                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
 934                 break;
 935         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 936                 len = sprintf(buf, "%pI6\n",
 937                               &ha->ip_config.ipv6_link_local_addr);
 938                 break;
 939         case ISCSI_NET_PARAM_IPV6_ROUTER:
 940                 len = sprintf(buf, "%pI6\n",
 941                               &ha->ip_config.ipv6_default_router_addr);
 942                 break;
 943         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 944                 len = sprintf(buf, "%s\n",
 945                               (ha->ip_config.ipv6_addl_options &
 946                                IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
 947                                "nd" : "static");
 948                 break;
 949         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 950                 len = sprintf(buf, "%s\n",
 951                               (ha->ip_config.ipv6_addl_options &
 952                                IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
 953                                "auto" : "static");
 954                 break;
 955         case ISCSI_NET_PARAM_VLAN_ID:
 956                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 957                         len = sprintf(buf, "%d\n",
 958                                       (ha->ip_config.ipv4_vlan_tag &
 959                                        ISCSI_MAX_VLAN_ID));
 960                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 961                         len = sprintf(buf, "%d\n",
 962                                       (ha->ip_config.ipv6_vlan_tag &
 963                                        ISCSI_MAX_VLAN_ID));
 964                 break;
 965         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 966                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 967                         len = sprintf(buf, "%d\n",
 968                                       ((ha->ip_config.ipv4_vlan_tag >> 13) &
 969                                         ISCSI_MAX_VLAN_PRIORITY));
 970                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 971                         len = sprintf(buf, "%d\n",
 972                                       ((ha->ip_config.ipv6_vlan_tag >> 13) &
 973                                         ISCSI_MAX_VLAN_PRIORITY));
 974                 break;
 975         case ISCSI_NET_PARAM_VLAN_ENABLED:
 976                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 977                         len = sprintf(buf, "%s\n",
 978                                       (ha->ip_config.ipv4_options &
 979                                        IPOPT_VLAN_TAGGING_ENABLE) ?
 980                                        "enabled" : "disabled");
 981                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 982                         len = sprintf(buf, "%s\n",
 983                                       (ha->ip_config.ipv6_options &
 984                                        IPV6_OPT_VLAN_TAGGING_ENABLE) ?
 985                                        "enabled" : "disabled");
 986                 break;
 987         case ISCSI_NET_PARAM_MTU:
 988                 len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
 989                 break;
 990         case ISCSI_NET_PARAM_PORT:
 991                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 992                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
 993                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 994                         len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
 995                 break;
 996         default:
 997                 len = -ENOSYS;
 998         }
 999
1000         return len;
1001 }
1002
1003 static struct iscsi_endpoint *
1004 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1005                    int non_blocking)
1006 {
1007         int ret;
1008         struct iscsi_endpoint *ep;
1009         struct qla_endpoint *qla_ep;
1010         struct scsi_qla_host *ha;
1011         struct sockaddr_in *addr;
1012         struct sockaddr_in6 *addr6;
1013
1014         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1015         if (!shost) {
1016                 ret = -ENXIO;
1017                 printk(KERN_ERR "%s: shost is NULL\n",
1018                        __func__);
1019                 return ERR_PTR(ret);
1020         }
1021
1022         ha = iscsi_host_priv(shost);
1023
1024         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
1025         if (!ep) {
1026                 ret = -ENOMEM;
1027                 return ERR_PTR(ret);
1028         }
1029
1030         qla_ep = ep->dd_data;
1031         memset(qla_ep, 0, sizeof(struct qla_endpoint));
1032         if (dst_addr->sa_family == AF_INET) {
1033                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
1034                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
1035                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
1036                                   (char *)&addr->sin_addr));
1037         } else if (dst_addr->sa_family == AF_INET6) {
1038                 memcpy(&qla_ep->dst_addr, dst_addr,
1039                        sizeof(struct sockaddr_in6));
1040                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
1041                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
1042                                   (char *)&addr6->sin6_addr));
1043         }
1044
1045         qla_ep->host = shost;
1046
1047         return ep;
1048 }
1049
1050 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1051 {
1052         struct qla_endpoint *qla_ep;
1053         struct scsi_qla_host *ha;
1054         int ret = 0;
1055
1056         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1057         qla_ep = ep->dd_data;
1058         ha = to_qla_host(qla_ep->host);
1059
1060         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1061                 ret = 1;
1062
1063         return ret;
1064 }
1065
1066 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
1067 {
1068         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1069         iscsi_destroy_endpoint(ep);
1070 }
1071
1072 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
1073                                 enum iscsi_param param,
1074                                 char *buf)
1075 {
1076         struct qla_endpoint *qla_ep = ep->dd_data;
1077         struct sockaddr *dst_addr;
1078
1079         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1080
1081         switch (param) {
1082         case ISCSI_PARAM_CONN_PORT:
1083         case ISCSI_PARAM_CONN_ADDRESS:
1084                 if (!qla_ep)
1085                         return -ENOTCONN;
1086
1087                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1088                 if (!dst_addr)
1089                         return -ENOTCONN;
1090
1091                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1092                                                  &qla_ep->dst_addr, param, buf);
1093         default:
1094                 return -ENOSYS;
1095         }
1096 }
1097
1098 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1099                                    struct iscsi_stats *stats)
1100 {
1101         struct iscsi_session *sess;
1102         struct iscsi_cls_session *cls_sess;
1103         struct ddb_entry *ddb_entry;
1104         struct scsi_qla_host *ha;
1105         struct ql_iscsi_stats *ql_iscsi_stats;
1106         int stats_size;
1107         int ret;
1108         dma_addr_t iscsi_stats_dma;
1109
1110         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1111
1112         cls_sess = iscsi_conn_to_session(cls_conn);
1113         sess = cls_sess->dd_data;
1114         ddb_entry = sess->dd_data;
1115         ha = ddb_entry->ha;
1116
1117         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1118         /* Allocate memory */
1119         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1120                                             &iscsi_stats_dma, GFP_KERNEL);
1121         if (!ql_iscsi_stats) {
1122                 ql4_printk(KERN_ERR, ha,
1123                            "Unable to allocate memory for iscsi stats\n");
1124                 goto exit_get_stats;
1125         }
1126
1127         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
1128                                      iscsi_stats_dma);
1129         if (ret != QLA_SUCCESS) {
1130                 ql4_printk(KERN_ERR, ha,
1131                            "Unable to retrieve iscsi stats\n");
1132                 goto free_stats;
1133         }
1134
1135         /* octets */
1136         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
1137         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
1138         /* xmit pdus */
1139         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
1140         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
1141         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
1142         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
1143         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
1144         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
1145         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
1146         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
1147         /* recv pdus */
1148         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
1149         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
1150         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
1151         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
1152         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
1153         stats->logoutrsp_pdus =
1154                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
1155         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
1156         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
1157         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
1158
1159 free_stats:
1160         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
1161                           iscsi_stats_dma);
1162 exit_get_stats:
1163         return;
1164 }
1165
1166 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
1167 {
1168         struct iscsi_cls_session *session;
1169         struct iscsi_session *sess;
1170         unsigned long flags;
1171         enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
1172
1173         session = starget_to_session(scsi_target(sc->device));
1174         sess = session->dd_data;
1175
1176         spin_lock_irqsave(&session->lock, flags);
1177         if (session->state == ISCSI_SESSION_FAILED)
1178                 ret = BLK_EH_RESET_TIMER;
1179         spin_unlock_irqrestore(&session->lock, flags);
1180
1181         return ret;
1182 }
1183
1184 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
1185 {
1186         struct scsi_qla_host *ha = to_qla_host(shost);
1187         struct iscsi_cls_host *ihost = shost->shost_data;
1188         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
1189
1190         qla4xxx_get_firmware_state(ha);
1191
1192         switch (ha->addl_fw_state & 0x0F00) {
1193         case FW_ADDSTATE_LINK_SPEED_10MBPS:
1194                 speed = ISCSI_PORT_SPEED_10MBPS;
1195                 break;
1196         case FW_ADDSTATE_LINK_SPEED_100MBPS:
1197                 speed = ISCSI_PORT_SPEED_100MBPS;
1198                 break;
1199         case FW_ADDSTATE_LINK_SPEED_1GBPS:
1200                 speed = ISCSI_PORT_SPEED_1GBPS;
1201                 break;
1202         case FW_ADDSTATE_LINK_SPEED_10GBPS:
1203                 speed = ISCSI_PORT_SPEED_10GBPS;
1204                 break;
1205         }
1206         ihost->port_speed = speed;
1207 }
1208
1209 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1210 {
1211         struct scsi_qla_host *ha = to_qla_host(shost);
1212         struct iscsi_cls_host *ihost = shost->shost_data;
1213         uint32_t state = ISCSI_PORT_STATE_DOWN;
1214
1215         if (test_bit(AF_LINK_UP, &ha->flags))
1216                 state = ISCSI_PORT_STATE_UP;
1217
1218         ihost->port_state = state;
1219 }
1220
1221 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1222                                   enum iscsi_host_param param, char *buf)
1223 {
1224         struct scsi_qla_host *ha = to_qla_host(shost);
1225         int len;
1226
1227         switch (param) {
1228         case ISCSI_HOST_PARAM_HWADDRESS:
1229                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1230                 break;
1231         case ISCSI_HOST_PARAM_IPADDRESS:
1232                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1233                 break;
1234         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1235                 len = sprintf(buf, "%s\n", ha->name_string);
1236                 break;
1237         case ISCSI_HOST_PARAM_PORT_STATE:
1238                 qla4xxx_set_port_state(shost);
1239                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1240                 break;
1241         case ISCSI_HOST_PARAM_PORT_SPEED:
1242                 qla4xxx_set_port_speed(shost);
1243                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1244                 break;
1245         default:
1246                 return -ENOSYS;
1247         }
1248
1249         return len;
1250 }
1251
1252 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1253 {
1254         if (ha->iface_ipv4)
1255                 return;
1256
1257         /* IPv4 */
1258         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1259                                             &qla4xxx_iscsi_transport,
1260                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1261         if (!ha->iface_ipv4)
1262                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1263                            "iface0.\n");
1264 }
1265
1266 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1267 {
1268         if (!ha->iface_ipv6_0)
1269                 /* IPv6 iface-0 */
1270                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1271                                                       &qla4xxx_iscsi_transport,
1272                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1273                                                       0);
1274         if (!ha->iface_ipv6_0)
1275                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1276                            "iface0.\n");
1277
1278         if (!ha->iface_ipv6_1)
1279                 /* IPv6 iface-1 */
1280                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1281                                                       &qla4xxx_iscsi_transport,
1282                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1283                                                       0);
1284         if (!ha->iface_ipv6_1)
1285                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1286                            "iface1.\n");
1287 }
1288
1289 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1290 {
1291         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1292                 qla4xxx_create_ipv4_iface(ha);
1293
1294         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
1295                 qla4xxx_create_ipv6_iface(ha);
1296 }
1297
1298 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
1299 {
1300         if (ha->iface_ipv4) {
1301                 iscsi_destroy_iface(ha->iface_ipv4);
1302                 ha->iface_ipv4 = NULL;
1303         }
1304 }
1305
1306 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
1307 {
1308         if (ha->iface_ipv6_0) {
1309                 iscsi_destroy_iface(ha->iface_ipv6_0);
1310                 ha->iface_ipv6_0 = NULL;
1311         }
1312         if (ha->iface_ipv6_1) {
1313                 iscsi_destroy_iface(ha->iface_ipv6_1);
1314                 ha->iface_ipv6_1 = NULL;
1315         }
1316 }
1317
1318 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
1319 {
1320         qla4xxx_destroy_ipv4_iface(ha);
1321         qla4xxx_destroy_ipv6_iface(ha);
1322 }
1323
1324 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1325                              struct iscsi_iface_param_info *iface_param,
1326                              struct addr_ctrl_blk *init_fw_cb)
1327 {
1328         /*
1329          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1330          * iface_num 1 is valid only for IPv6 Addr.
1331          */
1332         switch (iface_param->param) {
1333         case ISCSI_NET_PARAM_IPV6_ADDR:
1334                 if (iface_param->iface_num & 0x1)
1335                         /* IPv6 Addr 1 */
1336                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
1337                                sizeof(init_fw_cb->ipv6_addr1));
1338                 else
1339                         /* IPv6 Addr 0 */
1340                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
1341                                sizeof(init_fw_cb->ipv6_addr0));
1342                 break;
1343         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1344                 if (iface_param->iface_num & 0x1)
1345                         break;
1346                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
1347                        sizeof(init_fw_cb->ipv6_if_id));
1348                 break;
1349         case ISCSI_NET_PARAM_IPV6_ROUTER:
1350                 if (iface_param->iface_num & 0x1)
1351                         break;
1352                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
1353                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1354                 break;
1355         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1356                 /* Autocfg applies to even interface */
1357                 if (iface_param->iface_num & 0x1)
1358                         break;
1359
1360                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
1361                         init_fw_cb->ipv6_addtl_opts &=
1362                                 cpu_to_le16(
1363                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1364                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
1365                         init_fw_cb->ipv6_addtl_opts |=
1366                                 cpu_to_le16(
1367                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1368                 else
1369                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1370                                    "IPv6 addr\n");
1371                 break;
1372         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1373                 /* Autocfg applies to even interface */
1374                 if (iface_param->iface_num & 0x1)
1375                         break;
1376
1377                 if (iface_param->value[0] ==
1378                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
1379                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
1380                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1381                 else if (iface_param->value[0] ==
1382                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
1383                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
1384                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1385                 else
1386                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1387                                    "IPv6 linklocal addr\n");
1388                 break;
1389         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
1390                 /* Autocfg applies to even interface */
1391                 if (iface_param->iface_num & 0x1)
1392                         break;
1393
1394                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
1395                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
1396                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1397                 break;
1398         case ISCSI_NET_PARAM_IFACE_ENABLE:
1399                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1400                         init_fw_cb->ipv6_opts |=
1401                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
1402                         qla4xxx_create_ipv6_iface(ha);
1403                 } else {
1404                         init_fw_cb->ipv6_opts &=
1405                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
1406                                             0xFFFF);
1407                         qla4xxx_destroy_ipv6_iface(ha);
1408                 }
1409                 break;
1410         case ISCSI_NET_PARAM_VLAN_TAG:
1411                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
1412                         break;
1413                 init_fw_cb->ipv6_vlan_tag =
1414                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1415                 break;
1416         case ISCSI_NET_PARAM_VLAN_ENABLED:
1417                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1418                         init_fw_cb->ipv6_opts |=
1419                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
1420                 else
1421                         init_fw_cb->ipv6_opts &=
1422                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
1423                 break;
1424         case ISCSI_NET_PARAM_MTU:
1425                 init_fw_cb->eth_mtu_size =
1426                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1427                 break;
1428         case ISCSI_NET_PARAM_PORT:
1429                 /* Autocfg applies to even interface */
1430                 if (iface_param->iface_num & 0x1)
1431                         break;
1432
1433                 init_fw_cb->ipv6_port =
1434                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1435                 break;
1436         default:
1437                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
1438                            iface_param->param);
1439                 break;
1440         }
1441 }
1442
1443 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
1444                              struct iscsi_iface_param_info *iface_param,
1445                              struct addr_ctrl_blk *init_fw_cb)
1446 {
1447         switch (iface_param->param) {
1448         case ISCSI_NET_PARAM_IPV4_ADDR:
1449                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
1450                        sizeof(init_fw_cb->ipv4_addr));
1451                 break;
1452         case ISCSI_NET_PARAM_IPV4_SUBNET:
1453                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
1454                        sizeof(init_fw_cb->ipv4_subnet));
1455                 break;
1456         case ISCSI_NET_PARAM_IPV4_GW:
1457                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
1458                        sizeof(init_fw_cb->ipv4_gw_addr));
1459                 break;
1460         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1461                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
1462                         init_fw_cb->ipv4_tcp_opts |=
1463                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
1464                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
1465                         init_fw_cb->ipv4_tcp_opts &=
1466                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
1467                 else
1468                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
1469                 break;
1470         case ISCSI_NET_PARAM_IFACE_ENABLE:
1471                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1472                         init_fw_cb->ipv4_ip_opts |=
1473                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
1474                         qla4xxx_create_ipv4_iface(ha);
1475                 } else {
1476                         init_fw_cb->ipv4_ip_opts &=
1477                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
1478                                             0xFFFF);
1479                         qla4xxx_destroy_ipv4_iface(ha);
1480                 }
1481                 break;
1482         case ISCSI_NET_PARAM_VLAN_TAG:
1483                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
1484                         break;
1485                 init_fw_cb->ipv4_vlan_tag =
1486                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1487                 break;
1488         case ISCSI_NET_PARAM_VLAN_ENABLED:
1489                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1490                         init_fw_cb->ipv4_ip_opts |=
1491                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
1492                 else
1493                         init_fw_cb->ipv4_ip_opts &=
1494                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
1495                 break;
1496         case ISCSI_NET_PARAM_MTU:
1497                 init_fw_cb->eth_mtu_size =
1498                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1499                 break;
1500         case ISCSI_NET_PARAM_PORT:
1501                 init_fw_cb->ipv4_port =
1502                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1503                 break;
1504         default:
1505                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
1506                            iface_param->param);
1507                 break;
1508         }
1509 }
1510
1511 static void
1512 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
1513 {
1514         struct addr_ctrl_blk_def *acb;
1515         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
1516         memset(acb->reserved1, 0, sizeof(acb->reserved1));
1517         memset(acb->reserved2, 0, sizeof(acb->reserved2));
1518         memset(acb->reserved3, 0, sizeof(acb->reserved3));
1519         memset(acb->reserved4, 0, sizeof(acb->reserved4));
1520         memset(acb->reserved5, 0, sizeof(acb->reserved5));
1521         memset(acb->reserved6, 0, sizeof(acb->reserved6));
1522         memset(acb->reserved7, 0, sizeof(acb->reserved7));
1523         memset(acb->reserved8, 0, sizeof(acb->reserved8));
1524         memset(acb->reserved9, 0, sizeof(acb->reserved9));
1525         memset(acb->reserved10, 0, sizeof(acb->reserved10));
1526         memset(acb->reserved11, 0, sizeof(acb->reserved11));
1527         memset(acb->reserved12, 0, sizeof(acb->reserved12));
1528         memset(acb->reserved13, 0, sizeof(acb->reserved13));
1529         memset(acb->reserved14, 0, sizeof(acb->reserved14));
1530         memset(acb->reserved15, 0, sizeof(acb->reserved15));
1531 }
1532
1533 static int
1534 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
1535 {
1536         struct scsi_qla_host *ha = to_qla_host(shost);
1537         int rval = 0;
1538         struct iscsi_iface_param_info *iface_param = NULL;
1539         struct addr_ctrl_blk *init_fw_cb = NULL;
1540         dma_addr_t init_fw_cb_dma;
1541         uint32_t mbox_cmd[MBOX_REG_COUNT];
1542         uint32_t mbox_sts[MBOX_REG_COUNT];
1543         uint32_t rem = len;
1544         struct nlattr *attr;
1545
1546         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
1547                                         sizeof(struct addr_ctrl_blk),
1548                                         &init_fw_cb_dma, GFP_KERNEL);
1549         if (!init_fw_cb) {
1550                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
1551                            __func__);
1552                 return -ENOMEM;
1553         }
1554
1555         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1556         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1557         memset(&mbox_sts, 0, sizeof(mbox_sts));
1558
1559         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
1560                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
1561                 rval = -EIO;
1562                 goto exit_init_fw_cb;
1563         }
1564
1565         nla_for_each_attr(attr, data, len, rem) {
1566                 iface_param = nla_data(attr);
1567
1568                 if (iface_param->param_type != ISCSI_NET_PARAM)
1569                         continue;
1570
1571                 switch (iface_param->iface_type) {
1572                 case ISCSI_IFACE_TYPE_IPV4:
1573                         switch (iface_param->iface_num) {
1574                         case 0:
1575                                 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
1576                                 break;
1577                         default:
1578                                 /* Cannot have more than one IPv4 interface */
1579                                 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
1580                                            "number = %d\n",
1581                                            iface_param->iface_num);
1582                                 break;
1583                         }
1584                         break;
1585                 case ISCSI_IFACE_TYPE_IPV6:
1586                         switch (iface_param->iface_num) {
1587                         case 0:
1588                         case 1:
1589                                 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
1590                                 break;
1591                         default:
1592                                 /* Cannot have more than two IPv6 interface */
1593                                 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
1594                                            "number = %d\n",
1595                                            iface_param->iface_num);
1596                                 break;
1597                         }
1598                         break;
1599                 default:
1600                         ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
1601                         break;
1602                 }
1603         }
1604
1605         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
1606
1607         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
1608                                  sizeof(struct addr_ctrl_blk),
1609                                  FLASH_OPT_RMW_COMMIT);
1610         if (rval != QLA_SUCCESS) {
1611                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
1612                            __func__);
1613                 rval = -EIO;
1614                 goto exit_init_fw_cb;
1615         }
1616
1617         rval = qla4xxx_disable_acb(ha);
1618         if (rval != QLA_SUCCESS) {
1619                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
1620                            __func__);
1621                 rval = -EIO;
1622                 goto exit_init_fw_cb;
1623         }
1624
1625         wait_for_completion_timeout(&ha->disable_acb_comp,
1626                                     DISABLE_ACB_TOV * HZ);
1627
1628         qla4xxx_initcb_to_acb(init_fw_cb);
1629
1630         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
1631         if (rval != QLA_SUCCESS) {
1632                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
1633                            __func__);
1634                 rval = -EIO;
1635                 goto exit_init_fw_cb;
1636         }
1637
1638         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1639         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
1640                                   init_fw_cb_dma);
1641
1642 exit_init_fw_cb:
1643         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
1644                           init_fw_cb, init_fw_cb_dma);
1645
1646         return rval;
1647 }
1648
1649 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
1650                                      enum iscsi_param param, char *buf)
1651 {
1652         struct iscsi_session *sess = cls_sess->dd_data;
1653         struct ddb_entry *ddb_entry = sess->dd_data;
1654         struct scsi_qla_host *ha = ddb_entry->ha;
1655         struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
1656         struct ql4_chap_table chap_tbl;
1657         int rval, len;
1658         uint16_t idx;
1659
1660         memset(&chap_tbl, 0, sizeof(chap_tbl));
1661         switch (param) {
1662         case ISCSI_PARAM_CHAP_IN_IDX:
1663                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
1664                                               sess->password_in, BIDI_CHAP,
1665                                               &idx);
1666                 if (rval)
1667                         len = sprintf(buf, "\n");
1668                 else
1669                         len = sprintf(buf, "%hu\n", idx);
1670                 break;
1671         case ISCSI_PARAM_CHAP_OUT_IDX:
1672                 if (ddb_entry->ddb_type == FLASH_DDB) {
1673                         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
1674                                 idx = ddb_entry->chap_tbl_idx;
1675                                 rval = QLA_SUCCESS;
1676                         } else {
1677                                 rval = QLA_ERROR;
1678                         }
1679                 } else {
1680                         rval = qla4xxx_get_chap_index(ha, sess->username,
1681                                                       sess->password,
1682                                                       LOCAL_CHAP, &idx);
1683                 }
1684                 if (rval)
1685                         len = sprintf(buf, "\n");
1686                 else
1687                         len = sprintf(buf, "%hu\n", idx);
1688                 break;
1689         case ISCSI_PARAM_USERNAME:
1690         case ISCSI_PARAM_PASSWORD:
1691                 /* First, populate session username and password for FLASH DDB,
1692                  * if not already done. This happens when session login fails
1693                  * for a FLASH DDB.
1694                  */
1695                 if (ddb_entry->ddb_type == FLASH_DDB &&
1696                     ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
1697                     !sess->username && !sess->password) {
1698                         idx = ddb_entry->chap_tbl_idx;
1699                         rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
1700                                                             chap_tbl.secret,
1701                                                             idx);
1702                         if (!rval) {
1703                                 iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
1704                                                 (char *)chap_tbl.name,
1705                                                 strlen((char *)chap_tbl.name));
1706                                 iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
1707                                                 (char *)chap_tbl.secret,
1708                                                 chap_tbl.secret_len);
1709                         }
1710                 }
1711                 /* allow fall-through */
1712         default:
1713                 return iscsi_session_get_param(cls_sess, param, buf);
1714         }
1715
1716         return len;
1717 }
1718
1719 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
1720                                   enum iscsi_param param, char *buf)
1721 {
1722         struct iscsi_conn *conn;
1723         struct qla_conn *qla_conn;
1724         struct sockaddr *dst_addr;
1725         int len = 0;
1726
1727         conn = cls_conn->dd_data;
1728         qla_conn = conn->dd_data;
1729         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
1730
1731         switch (param) {
1732         case ISCSI_PARAM_CONN_PORT:
1733         case ISCSI_PARAM_CONN_ADDRESS:
1734                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1735                                                  dst_addr, param, buf);
1736         default:
1737                 return iscsi_conn_get_param(cls_conn, param, buf);
1738         }
1739
1740         return len;
1741
1742 }
1743
1744 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
1745 {
1746         uint32_t mbx_sts = 0;
1747         uint16_t tmp_ddb_index;
1748         int ret;
1749
1750 get_ddb_index:
1751         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
1752
1753         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
1754                 DEBUG2(ql4_printk(KERN_INFO, ha,
1755                                   "Free DDB index not available\n"));
1756                 ret = QLA_ERROR;
1757                 goto exit_get_ddb_index;
1758         }
1759
1760         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1761                 goto get_ddb_index;
1762
1763         DEBUG2(ql4_printk(KERN_INFO, ha,
1764                           "Found a free DDB index at %d\n", tmp_ddb_index));
1765         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1766         if (ret == QLA_ERROR) {
1767                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1768                         ql4_printk(KERN_INFO, ha,
1769                                    "DDB index = %d not available trying next\n",
1770                                    tmp_ddb_index);
1771                         goto get_ddb_index;
1772                 }
1773                 DEBUG2(ql4_printk(KERN_INFO, ha,
1774                                   "Free FW DDB not available\n"));
1775         }
1776
1777         *ddb_index = tmp_ddb_index;
1778
1779 exit_get_ddb_index:
1780         return ret;
1781 }
1782
1783 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1784                                    struct ddb_entry *ddb_entry,
1785                                    char *existing_ipaddr,
1786                                    char *user_ipaddr)
1787 {
1788         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1789         char formatted_ipaddr[DDB_IPADDR_LEN];
1790         int status = QLA_SUCCESS, ret = 0;
1791
1792         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1793                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1794                                '\0', NULL);
1795                 if (ret == 0) {
1796                         status = QLA_ERROR;
1797                         goto out_match;
1798                 }
1799                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1800         } else {
1801                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1802                                '\0', NULL);
1803                 if (ret == 0) {
1804                         status = QLA_ERROR;
1805                         goto out_match;
1806                 }
1807                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1808         }
1809
1810         if (strcmp(existing_ipaddr, formatted_ipaddr))
1811                 status = QLA_ERROR;
1812
1813 out_match:
1814         return status;
1815 }
1816
1817 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1818                                       struct iscsi_cls_conn *cls_conn)
1819 {
1820         int idx = 0, max_ddbs, rval;
1821         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1822         struct iscsi_session *sess, *existing_sess;
1823         struct iscsi_conn *conn, *existing_conn;
1824         struct ddb_entry *ddb_entry;
1825
1826         sess = cls_sess->dd_data;
1827         conn = cls_conn->dd_data;
1828
1829         if (sess->targetname == NULL ||
1830             conn->persistent_address == NULL ||
1831             conn->persistent_port == 0)
1832                 return QLA_ERROR;
1833
1834         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1835                                      MAX_DEV_DB_ENTRIES;
1836
1837         for (idx = 0; idx < max_ddbs; idx++) {
1838                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1839                 if (ddb_entry == NULL)
1840                         continue;
1841
1842                 if (ddb_entry->ddb_type != FLASH_DDB)
1843                         continue;
1844
1845                 existing_sess = ddb_entry->sess->dd_data;
1846                 existing_conn = ddb_entry->conn->dd_data;
1847
1848                 if (existing_sess->targetname == NULL ||
1849                     existing_conn->persistent_address == NULL ||
1850                     existing_conn->persistent_port == 0)
1851                         continue;
1852
1853                 DEBUG2(ql4_printk(KERN_INFO, ha,
1854                                   "IQN = %s User IQN = %s\n",
1855                                   existing_sess->targetname,
1856                                   sess->targetname));
1857
1858                 DEBUG2(ql4_printk(KERN_INFO, ha,
1859                                   "IP = %s User IP = %s\n",
1860                                   existing_conn->persistent_address,
1861                                   conn->persistent_address));
1862
1863                 DEBUG2(ql4_printk(KERN_INFO, ha,
1864                                   "Port = %d User Port = %d\n",
1865                                   existing_conn->persistent_port,
1866                                   conn->persistent_port));
1867
1868                 if (strcmp(existing_sess->targetname, sess->targetname))
1869                         continue;
1870                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1871                                         existing_conn->persistent_address,
1872                                         conn->persistent_address);
1873                 if (rval == QLA_ERROR)
1874                         continue;
1875                 if (existing_conn->persistent_port != conn->persistent_port)
1876                         continue;
1877                 break;
1878         }
1879
1880         if (idx == max_ddbs)
1881                 return QLA_ERROR;
1882
1883         DEBUG2(ql4_printk(KERN_INFO, ha,
1884                           "Match found in fwdb sessions\n"));
1885         return QLA_SUCCESS;
1886 }
1887
1888 static struct iscsi_cls_session *
1889 qla4xxx_session_create(struct iscsi_endpoint *ep,
1890                         uint16_t cmds_max, uint16_t qdepth,
1891                         uint32_t initial_cmdsn)
1892 {
1893         struct iscsi_cls_session *cls_sess;
1894         struct scsi_qla_host *ha;
1895         struct qla_endpoint *qla_ep;
1896         struct ddb_entry *ddb_entry;
1897         uint16_t ddb_index;
1898         struct iscsi_session *sess;
1899         struct sockaddr *dst_addr;
1900         int ret;
1901
1902         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1903         if (!ep) {
1904                 printk(KERN_ERR "qla4xxx: missing ep.\n");
1905                 return NULL;
1906         }
1907
1908         qla_ep = ep->dd_data;
1909         dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1910         ha = to_qla_host(qla_ep->host);
1911
1912         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1913         if (ret == QLA_ERROR)
1914                 return NULL;
1915
1916         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1917                                        cmds_max, sizeof(struct ddb_entry),
1918                                        sizeof(struct ql4_task_data),
1919                                        initial_cmdsn, ddb_index);
1920         if (!cls_sess)
1921                 return NULL;
1922
1923         sess = cls_sess->dd_data;
1924         ddb_entry = sess->dd_data;
1925         ddb_entry->fw_ddb_index = ddb_index;
1926         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1927         ddb_entry->ha = ha;
1928         ddb_entry->sess = cls_sess;
1929         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1930         ddb_entry->ddb_change = qla4xxx_ddb_change;
1931         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1932         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1933         ha->tot_ddbs++;
1934
1935         return cls_sess;
1936 }
1937
1938 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1939 {
1940         struct iscsi_session *sess;
1941         struct ddb_entry *ddb_entry;
1942         struct scsi_qla_host *ha;
1943         unsigned long flags, wtime;
1944         struct dev_db_entry *fw_ddb_entry = NULL;
1945         dma_addr_t fw_ddb_entry_dma;
1946         uint32_t ddb_state;
1947         int ret;
1948
1949         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1950         sess = cls_sess->dd_data;
1951         ddb_entry = sess->dd_data;
1952         ha = ddb_entry->ha;
1953
1954         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1955                                           &fw_ddb_entry_dma, GFP_KERNEL);
1956         if (!fw_ddb_entry) {
1957                 ql4_printk(KERN_ERR, ha,
1958                            "%s: Unable to allocate dma buffer\n", __func__);
1959                 goto destroy_session;
1960         }
1961
1962         wtime = jiffies + (HZ * LOGOUT_TOV);
1963         do {
1964                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
1965                                               fw_ddb_entry, fw_ddb_entry_dma,
1966                                               NULL, NULL, &ddb_state, NULL,
1967                                               NULL, NULL);
1968                 if (ret == QLA_ERROR)
1969                         goto destroy_session;
1970
1971                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
1972                     (ddb_state == DDB_DS_SESSION_FAILED))
1973                         goto destroy_session;
1974
1975                 schedule_timeout_uninterruptible(HZ);
1976         } while ((time_after(wtime, jiffies)));
1977
1978 destroy_session:
1979         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1980
1981         spin_lock_irqsave(&ha->hardware_lock, flags);
1982         qla4xxx_free_ddb(ha, ddb_entry);
1983         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1984
1985         iscsi_session_teardown(cls_sess);
1986
1987         if (fw_ddb_entry)
1988                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1989                                   fw_ddb_entry, fw_ddb_entry_dma);
1990 }
1991
1992 static struct iscsi_cls_conn *
1993 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1994 {
1995         struct iscsi_cls_conn *cls_conn;
1996         struct iscsi_session *sess;
1997         struct ddb_entry *ddb_entry;
1998
1999         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
2000         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
2001                                     conn_idx);
2002         if (!cls_conn)
2003                 return NULL;
2004
2005         sess = cls_sess->dd_data;
2006         ddb_entry = sess->dd_data;
2007         ddb_entry->conn = cls_conn;
2008
2009         return cls_conn;
2010 }
2011
2012 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
2013                              struct iscsi_cls_conn *cls_conn,
2014                              uint64_t transport_fd, int is_leading)
2015 {
2016         struct iscsi_conn *conn;
2017         struct qla_conn *qla_conn;
2018         struct iscsi_endpoint *ep;
2019
2020         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
2021
2022         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
2023                 return -EINVAL;
2024         ep = iscsi_lookup_endpoint(transport_fd);
2025         conn = cls_conn->dd_data;
2026         qla_conn = conn->dd_data;
2027         qla_conn->qla_ep = ep->dd_data;
2028         return 0;
2029 }
2030
2031 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
2032 {
2033         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
2034         struct iscsi_session *sess;
2035         struct ddb_entry *ddb_entry;
2036         struct scsi_qla_host *ha;
2037         struct dev_db_entry *fw_ddb_entry = NULL;
2038         dma_addr_t fw_ddb_entry_dma;
2039         uint32_t mbx_sts = 0;
2040         int ret = 0;
2041         int status = QLA_SUCCESS;
2042
2043         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
2044         sess = cls_sess->dd_data;
2045         ddb_entry = sess->dd_data;
2046         ha = ddb_entry->ha;
2047
2048         /* Check if we have  matching FW DDB, if yes then do not
2049          * login to this target. This could cause target to logout previous
2050          * connection
2051          */
2052         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
2053         if (ret == QLA_SUCCESS) {
2054                 ql4_printk(KERN_INFO, ha,
2055                            "Session already exist in FW.\n");
2056                 ret = -EEXIST;
2057                 goto exit_conn_start;
2058         }
2059
2060         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2061                                           &fw_ddb_entry_dma, GFP_KERNEL);
2062         if (!fw_ddb_entry) {
2063                 ql4_printk(KERN_ERR, ha,
2064                            "%s: Unable to allocate dma buffer\n", __func__);
2065                 ret = -ENOMEM;
2066                 goto exit_conn_start;
2067         }
2068
2069         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
2070         if (ret) {
2071                 /* If iscsid is stopped and started then no need to do
2072                 * set param again since ddb state will be already
2073                 * active and FW does not allow set ddb to an
2074                 * active session.
2075                 */
2076                 if (mbx_sts)
2077                         if (ddb_entry->fw_ddb_device_state ==
2078                                                 DDB_DS_SESSION_ACTIVE) {
2079                                 ddb_entry->unblock_sess(ddb_entry->sess);
2080                                 goto exit_set_param;
2081                         }
2082
2083                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
2084                            __func__, ddb_entry->fw_ddb_index);
2085                 goto exit_conn_start;
2086         }
2087
2088         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
2089         if (status == QLA_ERROR) {
2090                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
2091                            sess->targetname);
2092                 ret = -EINVAL;
2093                 goto exit_conn_start;
2094         }
2095
2096         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
2097                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
2098
2099         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
2100                       ddb_entry->fw_ddb_device_state));
2101
2102 exit_set_param:
2103         ret = 0;
2104
2105 exit_conn_start:
2106         if (fw_ddb_entry)
2107                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2108                                   fw_ddb_entry, fw_ddb_entry_dma);
2109         return ret;
2110 }
2111
2112 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
2113 {
2114         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
2115         struct iscsi_session *sess;
2116         struct scsi_qla_host *ha;
2117         struct ddb_entry *ddb_entry;
2118         int options;
2119
2120         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
2121         sess = cls_sess->dd_data;
2122         ddb_entry = sess->dd_data;
2123         ha = ddb_entry->ha;
2124
2125         options = LOGOUT_OPTION_CLOSE_SESSION;
2126         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
2127                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
2128 }
2129
2130 static void qla4xxx_task_work(struct work_struct *wdata)
2131 {
2132         struct ql4_task_data *task_data;
2133         struct scsi_qla_host *ha;
2134         struct passthru_status *sts;
2135         struct iscsi_task *task;
2136         struct iscsi_hdr *hdr;
2137         uint8_t *data;
2138         uint32_t data_len;
2139         struct iscsi_conn *conn;
2140         int hdr_len;
2141         itt_t itt;
2142
2143         task_data = container_of(wdata, struct ql4_task_data, task_work);
2144         ha = task_data->ha;
2145         task = task_data->task;
2146         sts = &task_data->sts;
2147         hdr_len = sizeof(struct iscsi_hdr);
2148
2149         DEBUG3(printk(KERN_INFO "Status returned\n"));
2150         DEBUG3(qla4xxx_dump_buffer(sts, 64));
2151         DEBUG3(printk(KERN_INFO "Response buffer"));
2152         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
2153
2154         conn = task->conn;
2155
2156         switch (sts->completionStatus) {
2157         case PASSTHRU_STATUS_COMPLETE:
2158                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
2159                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
2160                 itt = sts->handle;
2161                 hdr->itt = itt;
2162                 data = task_data->resp_buffer + hdr_len;
2163                 data_len = task_data->resp_len - hdr_len;
2164                 iscsi_complete_pdu(conn, hdr, data, data_len);
2165                 break;
2166         default:
2167                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
2168                            sts->completionStatus);
2169                 break;
2170         }
2171         return;
2172 }
2173
2174 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
2175 {
2176         struct ql4_task_data *task_data;
2177         struct iscsi_session *sess;
2178         struct ddb_entry *ddb_entry;
2179         struct scsi_qla_host *ha;
2180         int hdr_len;
2181
2182         sess = task->conn->session;
2183         ddb_entry = sess->dd_data;
2184         ha = ddb_entry->ha;
2185         task_data = task->dd_data;
2186         memset(task_data, 0, sizeof(struct ql4_task_data));
2187
2188         if (task->sc) {
2189                 ql4_printk(KERN_INFO, ha,
2190                            "%s: SCSI Commands not implemented\n", __func__);
2191                 return -EINVAL;
2192         }
2193
2194         hdr_len = sizeof(struct iscsi_hdr);
2195         task_data->ha = ha;
2196         task_data->task = task;
2197
2198         if (task->data_count) {
2199                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
2200                                                      task->data_count,
2201                                                      PCI_DMA_TODEVICE);
2202         }
2203
2204         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
2205                       __func__, task->conn->max_recv_dlength, hdr_len));
2206
2207         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
2208         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
2209                                                     task_data->resp_len,
2210                                                     &task_data->resp_dma,
2211                                                     GFP_ATOMIC);
2212         if (!task_data->resp_buffer)
2213                 goto exit_alloc_pdu;
2214
2215         task_data->req_len = task->data_count + hdr_len;
2216         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
2217                                                    task_data->req_len,
2218                                                    &task_data->req_dma,
2219                                                    GFP_ATOMIC);
2220         if (!task_data->req_buffer)
2221                 goto exit_alloc_pdu;
2222
2223         task->hdr = task_data->req_buffer;
2224
2225         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
2226
2227         return 0;
2228
2229 exit_alloc_pdu:
2230         if (task_data->resp_buffer)
2231                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
2232                                   task_data->resp_buffer, task_data->resp_dma);
2233
2234         if (task_data->req_buffer)
2235                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
2236                                   task_data->req_buffer, task_data->req_dma);
2237         return -ENOMEM;
2238 }
2239
2240 static void qla4xxx_task_cleanup(struct iscsi_task *task)
2241 {
2242         struct ql4_task_data *task_data;
2243         struct iscsi_session *sess;
2244         struct ddb_entry *ddb_entry;
2245         struct scsi_qla_host *ha;
2246         int hdr_len;
2247
2248         hdr_len = sizeof(struct iscsi_hdr);
2249         sess = task->conn->session;
2250         ddb_entry = sess->dd_data;
2251         ha = ddb_entry->ha;
2252         task_data = task->dd_data;
2253
2254         if (task->data_count) {
2255                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
2256                                  task->data_count, PCI_DMA_TODEVICE);
2257         }
2258
2259         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
2260                       __func__, task->conn->max_recv_dlength, hdr_len));
2261
2262         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
2263                           task_data->resp_buffer, task_data->resp_dma);
2264         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
2265                           task_data->req_buffer, task_data->req_dma);
2266         return;
2267 }
2268
2269 static int qla4xxx_task_xmit(struct iscsi_task *task)
2270 {
2271         struct scsi_cmnd *sc = task->sc;
2272         struct iscsi_session *sess = task->conn->session;
2273         struct ddb_entry *ddb_entry = sess->dd_data;
2274         struct scsi_qla_host *ha = ddb_entry->ha;
2275
2276         if (!sc)
2277                 return qla4xxx_send_passthru0(task);
2278
2279         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
2280                    __func__);
2281         return -ENOSYS;
2282 }
2283
2284 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
2285                                          struct iscsi_bus_flash_conn *conn,
2286                                          struct dev_db_entry *fw_ddb_entry)
2287 {
2288         unsigned long options = 0;
2289         int rc = 0;
2290
2291         options = le16_to_cpu(fw_ddb_entry->options);
2292         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
2293         if (test_bit(OPT_IPV6_DEVICE, &options)) {
2294                 rc = iscsi_switch_str_param(&sess->portal_type,
2295                                             PORTAL_TYPE_IPV6);
2296                 if (rc)
2297                         goto exit_copy;
2298         } else {
2299                 rc = iscsi_switch_str_param(&sess->portal_type,
2300                                             PORTAL_TYPE_IPV4);
2301                 if (rc)
2302                         goto exit_copy;
2303         }
2304
2305         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
2306                                               &options);
2307         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
2308         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
2309
2310         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2311         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
2312         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
2313         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
2314         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
2315         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
2316                                             &options);
2317         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
2318         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
2319         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
2320         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
2321                                              &options);
2322         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
2323         sess->discovery_auth_optional =
2324                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
2325         if (test_bit(ISCSIOPT_ERL1, &options))
2326                 sess->erl |= BIT_1;
2327         if (test_bit(ISCSIOPT_ERL0, &options))
2328                 sess->erl |= BIT_0;
2329
2330         options = le16_to_cpu(fw_ddb_entry->tcp_options);
2331         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
2332         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
2333         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
2334         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
2335                 conn->tcp_timer_scale |= BIT_3;
2336         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
2337                 conn->tcp_timer_scale |= BIT_2;
2338         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
2339                 conn->tcp_timer_scale |= BIT_1;
2340
2341         conn->tcp_timer_scale >>= 1;
2342         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
2343
2344         options = le16_to_cpu(fw_ddb_entry->ip_options);
2345         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
2346
2347         conn->max_recv_dlength = BYTE_UNITS *
2348                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2349         conn->max_xmit_dlength = BYTE_UNITS *
2350                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2351         sess->first_burst = BYTE_UNITS *
2352                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2353         sess->max_burst = BYTE_UNITS *
2354                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2355         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2356         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2357         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2358         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2359         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
2360         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
2361         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
2362         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
2363         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
2364         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
2365         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
2366         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
2367         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
2368         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
2369         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2370         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
2371
2372         sess->default_taskmgmt_timeout =
2373                                 le16_to_cpu(fw_ddb_entry->def_timeout);
2374         conn->port = le16_to_cpu(fw_ddb_entry->port);
2375
2376         options = le16_to_cpu(fw_ddb_entry->options);
2377         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2378         if (!conn->ipaddress) {
2379                 rc = -ENOMEM;
2380                 goto exit_copy;
2381         }
2382
2383         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2384         if (!conn->redirect_ipaddr) {
2385                 rc = -ENOMEM;
2386                 goto exit_copy;
2387         }
2388
2389         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
2390         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
2391
2392         if (test_bit(OPT_IPV6_DEVICE, &options)) {
2393                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
2394
2395                 conn->link_local_ipv6_addr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2396                 if (!conn->link_local_ipv6_addr) {
2397                         rc = -ENOMEM;
2398                         goto exit_copy;
2399                 }
2400
2401                 memcpy(conn->link_local_ipv6_addr,
2402                        fw_ddb_entry->link_local_ipv6_addr, IPv6_ADDR_LEN);
2403         } else {
2404                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
2405         }
2406
2407         if (fw_ddb_entry->iscsi_name[0]) {
2408                 rc = iscsi_switch_str_param(&sess->targetname,
2409                                             (char *)fw_ddb_entry->iscsi_name);
2410                 if (rc)
2411                         goto exit_copy;
2412         }
2413
2414         if (fw_ddb_entry->iscsi_alias[0]) {
2415                 rc = iscsi_switch_str_param(&sess->targetalias,
2416                                             (char *)fw_ddb_entry->iscsi_alias);
2417                 if (rc)
2418                         goto exit_copy;
2419         }
2420
2421         COPY_ISID(sess->isid, fw_ddb_entry->isid);
2422
2423 exit_copy:
2424         return rc;
2425 }
2426
2427 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
2428                                        struct iscsi_bus_flash_conn *conn,
2429                                        struct dev_db_entry *fw_ddb_entry)
2430 {
2431         uint16_t options;
2432         int rc = 0;
2433
2434         options = le16_to_cpu(fw_ddb_entry->options);
2435         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
2436         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
2437                 options |= BIT_8;
2438         else
2439                 options &= ~BIT_8;
2440
2441         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
2442         SET_BITVAL(sess->discovery_sess, options, BIT_4);
2443         SET_BITVAL(sess->entry_state, options, BIT_3);
2444         fw_ddb_entry->options = cpu_to_le16(options);
2445
2446         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2447         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
2448         SET_BITVAL(conn->datadgst_en, options, BIT_12);
2449         SET_BITVAL(sess->imm_data_en, options, BIT_11);
2450         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
2451         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
2452         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
2453         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
2454         SET_BITVAL(conn->snack_req_en, options, BIT_6);
2455         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
2456         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
2457         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
2458         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
2459         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
2460         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
2461
2462         options = le16_to_cpu(fw_ddb_entry->tcp_options);
2463         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
2464         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
2465         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
2466         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
2467         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
2468         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
2469         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
2470         fw_ddb_entry->tcp_options = cpu_to_le16(options);
2471
2472         options = le16_to_cpu(fw_ddb_entry->ip_options);
2473         SET_BITVAL(conn->fragment_disable, options, BIT_4);
2474         fw_ddb_entry->ip_options = cpu_to_le16(options);
2475
2476         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
2477         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
2478                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
2479         fw_ddb_entry->iscsi_max_snd_data_seg_len =
2480                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
2481         fw_ddb_entry->iscsi_first_burst_len =
2482                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
2483         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
2484                                             BYTE_UNITS);
2485         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
2486         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
2487         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
2488         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
2489         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
2490         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
2491         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
2492         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
2493         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
2494         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
2495         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
2496         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
2497         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
2498         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
2499         fw_ddb_entry->port = cpu_to_le16(conn->port);
2500         fw_ddb_entry->def_timeout =
2501                                 cpu_to_le16(sess->default_taskmgmt_timeout);
2502
2503         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
2504                 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
2505         else
2506                 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
2507
2508         if (conn->ipaddress)
2509                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
2510                        sizeof(fw_ddb_entry->ip_addr));
2511
2512         if (conn->redirect_ipaddr)
2513                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
2514                        sizeof(fw_ddb_entry->tgt_addr));
2515
2516         if (conn->link_local_ipv6_addr)
2517                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
2518                        conn->link_local_ipv6_addr,
2519                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
2520
2521         if (sess->targetname)
2522                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
2523                        sizeof(fw_ddb_entry->iscsi_name));
2524
2525         if (sess->targetalias)
2526                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
2527                        sizeof(fw_ddb_entry->iscsi_alias));
2528
2529         COPY_ISID(fw_ddb_entry->isid, sess->isid);
2530
2531         return rc;
2532 }
2533
2534 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
2535                                              struct iscsi_session *sess,
2536                                              struct dev_db_entry *fw_ddb_entry)
2537 {
2538         unsigned long options = 0;
2539         uint16_t ddb_link;
2540         uint16_t disc_parent;
2541
2542         options = le16_to_cpu(fw_ddb_entry->options);
2543         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
2544         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
2545                                               &options);
2546         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
2547
2548         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2549         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
2550         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
2551         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
2552         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
2553         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
2554                                             &options);
2555         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
2556         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
2557         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
2558                                              &options);
2559         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
2560         sess->discovery_auth_optional =
2561                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
2562         if (test_bit(ISCSIOPT_ERL1, &options))
2563                 sess->erl |= BIT_1;
2564         if (test_bit(ISCSIOPT_ERL0, &options))
2565                 sess->erl |= BIT_0;
2566
2567         options = le16_to_cpu(fw_ddb_entry->tcp_options);
2568         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
2569         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
2570         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
2571         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
2572                 conn->tcp_timer_scale |= BIT_3;
2573         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
2574                 conn->tcp_timer_scale |= BIT_2;
2575         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
2576                 conn->tcp_timer_scale |= BIT_1;
2577
2578         conn->tcp_timer_scale >>= 1;
2579         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
2580
2581         options = le16_to_cpu(fw_ddb_entry->ip_options);
2582         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
2583
2584         conn->max_recv_dlength = BYTE_UNITS *
2585                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2586         conn->max_xmit_dlength = BYTE_UNITS *
2587                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2588         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2589         sess->first_burst = BYTE_UNITS *
2590                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2591         sess->max_burst = BYTE_UNITS *
2592                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2593         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2594         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2595         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2596         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
2597         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
2598         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
2599         conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
2600         conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
2601         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
2602         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
2603         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
2604         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
2605         COPY_ISID(sess->isid, fw_ddb_entry->isid);
2606
2607         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
2608         if (ddb_link == DDB_ISNS)
2609                 disc_parent = ISCSI_DISC_PARENT_ISNS;
2610         else if (ddb_link == DDB_NO_LINK)
2611                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
2612         else if (ddb_link < MAX_DDB_ENTRIES)
2613                 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
2614         else
2615                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
2616
2617         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
2618                         iscsi_get_discovery_parent_name(disc_parent), 0);
2619
2620         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2621                         (char *)fw_ddb_entry->iscsi_alias, 0);
2622 }
2623
2624 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
2625                                      struct dev_db_entry *fw_ddb_entry,
2626                                      struct iscsi_cls_session *cls_sess,
2627                                      struct iscsi_cls_conn *cls_conn)
2628 {
2629         int buflen = 0;
2630         struct iscsi_session *sess;
2631         struct ddb_entry *ddb_entry;
2632         struct ql4_chap_table chap_tbl;
2633         struct iscsi_conn *conn;
2634         char ip_addr[DDB_IPADDR_LEN];
2635         uint16_t options = 0;
2636
2637         sess = cls_sess->dd_data;
2638         ddb_entry = sess->dd_data;
2639         conn = cls_conn->dd_data;
2640         memset(&chap_tbl, 0, sizeof(chap_tbl));
2641
2642         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2643
2644         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
2645
2646         sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
2647         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
2648
2649         memset(ip_addr, 0, sizeof(ip_addr));
2650         options = le16_to_cpu(fw_ddb_entry->options);
2651         if (options & DDB_OPT_IPV6_DEVICE) {
2652                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
2653
2654                 memset(ip_addr, 0, sizeof(ip_addr));
2655                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
2656         } else {
2657                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
2658                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
2659         }
2660
2661         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
2662                         (char *)ip_addr, buflen);
2663         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
2664                         (char *)fw_ddb_entry->iscsi_name, buflen);
2665         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
2666                         (char *)ha->name_string, buflen);
2667
2668         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
2669                 if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
2670                                                    chap_tbl.secret,
2671                                                    ddb_entry->chap_tbl_idx)) {
2672                         iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
2673                                         (char *)chap_tbl.name,
2674                                         strlen((char *)chap_tbl.name));
2675                         iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
2676                                         (char *)chap_tbl.secret,
2677                                         chap_tbl.secret_len);
2678                 }
2679         }
2680 }
2681
2682 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
2683                                              struct ddb_entry *ddb_entry)
2684 {
2685         struct iscsi_cls_session *cls_sess;
2686         struct iscsi_cls_conn *cls_conn;
2687         uint32_t ddb_state;
2688         dma_addr_t fw_ddb_entry_dma;
2689         struct dev_db_entry *fw_ddb_entry;
2690
2691         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2692                                           &fw_ddb_entry_dma, GFP_KERNEL);
2693         if (!fw_ddb_entry) {
2694                 ql4_printk(KERN_ERR, ha,
2695                            "%s: Unable to allocate dma buffer\n", __func__);
2696                 goto exit_session_conn_fwddb_param;
2697         }
2698
2699         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2700                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2701                                     NULL, NULL, NULL) == QLA_ERROR) {
2702                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2703                                   "get_ddb_entry for fw_ddb_index %d\n",
2704                                   ha->host_no, __func__,
2705                                   ddb_entry->fw_ddb_index));
2706                 goto exit_session_conn_fwddb_param;
2707         }
2708
2709         cls_sess = ddb_entry->sess;
2710
2711         cls_conn = ddb_entry->conn;
2712
2713         /* Update params */
2714         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
2715
2716 exit_session_conn_fwddb_param:
2717         if (fw_ddb_entry)
2718                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2719                                   fw_ddb_entry, fw_ddb_entry_dma);
2720 }
2721
2722 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
2723                                        struct ddb_entry *ddb_entry)
2724 {
2725         struct iscsi_cls_session *cls_sess;
2726         struct iscsi_cls_conn *cls_conn;
2727         struct iscsi_session *sess;
2728         struct iscsi_conn *conn;
2729         uint32_t ddb_state;
2730         dma_addr_t fw_ddb_entry_dma;
2731         struct dev_db_entry *fw_ddb_entry;
2732
2733         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2734                                           &fw_ddb_entry_dma, GFP_KERNEL);
2735         if (!fw_ddb_entry) {
2736                 ql4_printk(KERN_ERR, ha,
2737                            "%s: Unable to allocate dma buffer\n", __func__);
2738                 goto exit_session_conn_param;
2739         }
2740
2741         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2742                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2743                                     NULL, NULL, NULL) == QLA_ERROR) {
2744                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2745                                   "get_ddb_entry for fw_ddb_index %d\n",
2746                                   ha->host_no, __func__,
2747                                   ddb_entry->fw_ddb_index));
2748                 goto exit_session_conn_param;
2749         }
2750
2751         cls_sess = ddb_entry->sess;
2752         sess = cls_sess->dd_data;
2753
2754         cls_conn = ddb_entry->conn;
2755         conn = cls_conn->dd_data;
2756
2757         /* Update timers after login */
2758         ddb_entry->default_relogin_timeout =
2759                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
2760                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
2761                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
2762         ddb_entry->default_time2wait =
2763                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2764
2765         /* Update params */
2766         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2767         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
2768
2769         memcpy(sess->initiatorname, ha->name_string,
2770                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
2771
2772 exit_session_conn_param:
2773         if (fw_ddb_entry)
2774                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2775                                   fw_ddb_entry, fw_ddb_entry_dma);
2776 }
2777
2778 /*
2779  * Timer routines
2780  */
2781
2782 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
2783                                 unsigned long interval)
2784 {
2785         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
2786                      __func__, ha->host->host_no));
2787         init_timer(&ha->timer);
2788         ha->timer.expires = jiffies + interval * HZ;
2789         ha->timer.data = (unsigned long)ha;
2790         ha->timer.function = (void (*)(unsigned long))func;
2791         add_timer(&ha->timer);
2792         ha->timer_active = 1;
2793 }
2794
2795 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
2796 {
2797         del_timer_sync(&ha->timer);
2798         ha->timer_active = 0;
2799 }
2800
2801 /***
2802  * qla4xxx_mark_device_missing - blocks the session
2803  * @cls_session: Pointer to the session to be blocked
2804  * @ddb_entry: Pointer to device database entry
2805  *
2806  * This routine marks a device missing and close connection.
2807  **/
2808 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
2809 {
2810         iscsi_block_session(cls_session);
2811 }
2812
2813 /**
2814  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
2815  * @ha: Pointer to host adapter structure.
2816  *
2817  * This routine marks a device missing and resets the relogin retry count.
2818  **/
2819 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
2820 {
2821         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
2822 }
2823
2824 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
2825                                        struct ddb_entry *ddb_entry,
2826                                        struct scsi_cmnd *cmd)
2827 {
2828         struct srb *srb;
2829
2830         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2831         if (!srb)
2832                 return srb;
2833
2834         kref_init(&srb->srb_ref);
2835         srb->ha = ha;
2836         srb->ddb = ddb_entry;
2837         srb->cmd = cmd;
2838         srb->flags = 0;
2839         CMD_SP(cmd) = (void *)srb;
2840
2841         return srb;
2842 }
2843
2844 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
2845 {
2846         struct scsi_cmnd *cmd = srb->cmd;
2847
2848         if (srb->flags & SRB_DMA_VALID) {
2849                 scsi_dma_unmap(cmd);
2850                 srb->flags &= ~SRB_DMA_VALID;
2851         }
2852         CMD_SP(cmd) = NULL;
2853 }
2854
2855 void qla4xxx_srb_compl(struct kref *ref)
2856 {
2857         struct srb *srb = container_of(ref, struct srb, srb_ref);
2858         struct scsi_cmnd *cmd = srb->cmd;
2859         struct scsi_qla_host *ha = srb->ha;
2860
2861         qla4xxx_srb_free_dma(ha, srb);
2862
2863         mempool_free(srb, ha->srb_mempool);
2864
2865         cmd->scsi_done(cmd);
2866 }
2867
2868 /**
2869  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
2870  * @host: scsi host
2871  * @cmd: Pointer to Linux's SCSI command structure
2872  *
2873  * Remarks:
2874  * This routine is invoked by Linux to send a SCSI command to the driver.
2875  * The mid-level driver tries to ensure that queuecommand never gets
2876  * invoked concurrently with itself or the interrupt handler (although
2877  * the interrupt handler may call this routine as part of request-
2878  * completion handling).   Unfortunely, it sometimes calls the scheduler
2879  * in interrupt context which is a big NO! NO!.
2880  **/
2881 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
2882 {
2883         struct scsi_qla_host *ha = to_qla_host(host);
2884         struct ddb_entry *ddb_entry = cmd->device->hostdata;
2885         struct iscsi_cls_session *sess = ddb_entry->sess;
2886         struct srb *srb;
2887         int rval;
2888
2889         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2890                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
2891                         cmd->result = DID_NO_CONNECT << 16;
2892                 else
2893                         cmd->result = DID_REQUEUE << 16;
2894                 goto qc_fail_command;
2895         }
2896
2897         if (!sess) {
2898                 cmd->result = DID_IMM_RETRY << 16;
2899                 goto qc_fail_command;
2900         }
2901
2902         rval = iscsi_session_chkready(sess);
2903         if (rval) {
2904                 cmd->result = rval;
2905                 goto qc_fail_command;
2906         }
2907
2908         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2909             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2910             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2911             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2912             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2913             !test_bit(AF_ONLINE, &ha->flags) ||
2914             !test_bit(AF_LINK_UP, &ha->flags) ||
2915             test_bit(AF_LOOPBACK, &ha->flags) ||
2916             test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
2917             test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
2918             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
2919                 goto qc_host_busy;
2920
2921         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
2922         if (!srb)
2923                 goto qc_host_busy;
2924
2925         rval = qla4xxx_send_command_to_isp(ha, srb);
2926         if (rval != QLA_SUCCESS)
2927                 goto qc_host_busy_free_sp;
2928
2929         return 0;
2930
2931 qc_host_busy_free_sp:
2932         qla4xxx_srb_free_dma(ha, srb);
2933         mempool_free(srb, ha->srb_mempool);
2934
2935 qc_host_busy:
2936         return SCSI_MLQUEUE_HOST_BUSY;
2937
2938 qc_fail_command:
2939         cmd->scsi_done(cmd);
2940
2941         return 0;
2942 }
2943
2944 /**
2945  * qla4xxx_mem_free - frees memory allocated to adapter
2946  * @ha: Pointer to host adapter structure.
2947  *
2948  * Frees memory previously allocated by qla4xxx_mem_alloc
2949  **/
2950 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
2951 {
2952         if (ha->queues)
2953                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
2954                                   ha->queues_dma);
2955
2956          if (ha->fw_dump)
2957                 vfree(ha->fw_dump);
2958
2959         ha->queues_len = 0;
2960         ha->queues = NULL;
2961         ha->queues_dma = 0;
2962         ha->request_ring = NULL;
2963         ha->request_dma = 0;
2964         ha->response_ring = NULL;
2965         ha->response_dma = 0;
2966         ha->shadow_regs = NULL;
2967         ha->shadow_regs_dma = 0;
2968         ha->fw_dump = NULL;
2969         ha->fw_dump_size = 0;
2970
2971         /* Free srb pool. */
2972         if (ha->srb_mempool)
2973                 mempool_destroy(ha->srb_mempool);
2974
2975         ha->srb_mempool = NULL;
2976
2977         if (ha->chap_dma_pool)
2978                 dma_pool_destroy(ha->chap_dma_pool);
2979
2980         if (ha->chap_list)
2981                 vfree(ha->chap_list);
2982         ha->chap_list = NULL;
2983
2984         if (ha->fw_ddb_dma_pool)
2985                 dma_pool_destroy(ha->fw_ddb_dma_pool);
2986
2987         /* release io space registers  */
2988         if (is_qla8022(ha)) {
2989                 if (ha->nx_pcibase)
2990                         iounmap(
2991                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
2992         } else if (is_qla8032(ha) || is_qla8042(ha)) {
2993                 if (ha->nx_pcibase)
2994                         iounmap(
2995                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
2996         } else if (ha->reg) {
2997                 iounmap(ha->reg);
2998         }
2999
3000         if (ha->reset_tmplt.buff)
3001                 vfree(ha->reset_tmplt.buff);
3002
3003         pci_release_regions(ha->pdev);
3004 }
3005
3006 /**
3007  * qla4xxx_mem_alloc - allocates memory for use by adapter.
3008  * @ha: Pointer to host adapter structure
3009  *
3010  * Allocates DMA memory for request and response queues. Also allocates memory
3011  * for srbs.
3012  **/
3013 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
3014 {
3015         unsigned long align;
3016
3017         /* Allocate contiguous block of DMA memory for queues. */
3018         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
3019                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
3020                           sizeof(struct shadow_regs) +
3021                           MEM_ALIGN_VALUE +
3022                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
3023         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
3024                                         &ha->queues_dma, GFP_KERNEL);
3025         if (ha->queues == NULL) {
3026                 ql4_printk(KERN_WARNING, ha,
3027                     "Memory Allocation failed - queues.\n");
3028
3029                 goto mem_alloc_error_exit;
3030         }
3031         memset(ha->queues, 0, ha->queues_len);
3032
3033         /*
3034          * As per RISC alignment requirements -- the bus-address must be a
3035          * multiple of the request-ring size (in bytes).
3036          */
3037         align = 0;
3038         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
3039                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
3040                                            (MEM_ALIGN_VALUE - 1));
3041
3042         /* Update request and response queue pointers. */
3043         ha->request_dma = ha->queues_dma + align;
3044         ha->request_ring = (struct queue_entry *) (ha->queues + align);
3045         ha->response_dma = ha->queues_dma + align +
3046                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
3047         ha->response_ring = (struct queue_entry *) (ha->queues + align +
3048                                                     (REQUEST_QUEUE_DEPTH *
3049                                                      QUEUE_SIZE));
3050         ha->shadow_regs_dma = ha->queues_dma + align +
3051                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
3052                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
3053         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
3054                                                   (REQUEST_QUEUE_DEPTH *
3055                                                    QUEUE_SIZE) +
3056                                                   (RESPONSE_QUEUE_DEPTH *
3057                                                    QUEUE_SIZE));
3058
3059         /* Allocate memory for srb pool. */
3060         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
3061                                          mempool_free_slab, srb_cachep);
3062         if (ha->srb_mempool == NULL) {
3063                 ql4_printk(KERN_WARNING, ha,
3064                     "Memory Allocation failed - SRB Pool.\n");
3065
3066                 goto mem_alloc_error_exit;
3067         }
3068
3069         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
3070                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
3071
3072         if (ha->chap_dma_pool == NULL) {
3073                 ql4_printk(KERN_WARNING, ha,
3074                     "%s: chap_dma_pool allocation failed..\n", __func__);
3075                 goto mem_alloc_error_exit;
3076         }
3077
3078         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
3079                                               DDB_DMA_BLOCK_SIZE, 8, 0);
3080
3081         if (ha->fw_ddb_dma_pool == NULL) {
3082                 ql4_printk(KERN_WARNING, ha,
3083                            "%s: fw_ddb_dma_pool allocation failed..\n",
3084                            __func__);
3085                 goto mem_alloc_error_exit;
3086         }
3087
3088         return QLA_SUCCESS;
3089
3090 mem_alloc_error_exit:
3091         qla4xxx_mem_free(ha);
3092         return QLA_ERROR;
3093 }
3094
3095 /**
3096  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
3097  * @ha: adapter block pointer.
3098  *
3099  * Note: The caller should not hold the idc lock.
3100  **/
3101 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
3102 {
3103         uint32_t temp, temp_state, temp_val;
3104         int status = QLA_SUCCESS;
3105
3106         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
3107
3108         temp_state = qla82xx_get_temp_state(temp);
3109         temp_val = qla82xx_get_temp_val(temp);
3110
3111         if (temp_state == QLA82XX_TEMP_PANIC) {
3112                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
3113                            " exceeds maximum allowed. Hardware has been shut"
3114                            " down.\n", temp_val);
3115                 status = QLA_ERROR;
3116         } else if (temp_state == QLA82XX_TEMP_WARN) {
3117                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
3118                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
3119                                    " degrees C exceeds operating range."
3120                                    " Immediate action needed.\n", temp_val);
3121         } else {
3122                 if (ha->temperature == QLA82XX_TEMP_WARN)
3123                         ql4_printk(KERN_INFO, ha, "Device temperature is"
3124                                    " now %d degrees C in normal range.\n",
3125                                    temp_val);
3126         }
3127         ha->temperature = temp_state;
3128         return status;
3129 }
3130
3131 /**
3132  * qla4_8xxx_check_fw_alive  - Check firmware health
3133  * @ha: Pointer to host adapter structure.
3134  *
3135  * Context: Interrupt
3136  **/
3137 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
3138 {
3139         uint32_t fw_heartbeat_counter;
3140         int status = QLA_SUCCESS;
3141
3142         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
3143                                                    QLA8XXX_PEG_ALIVE_COUNTER);
3144         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
3145         if (fw_heartbeat_counter == 0xffffffff) {
3146                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
3147                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
3148                     ha->host_no, __func__));
3149                 return status;
3150         }
3151
3152         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
3153                 ha->seconds_since_last_heartbeat++;
3154                 /* FW not alive after 2 seconds */
3155                 if (ha->seconds_since_last_heartbeat == 2) {
3156                         ha->seconds_since_last_heartbeat = 0;
3157                         qla4_8xxx_dump_peg_reg(ha);
3158                         status = QLA_ERROR;
3159                 }
3160         } else
3161                 ha->seconds_since_last_heartbeat = 0;
3162
3163         ha->fw_heartbeat_counter = fw_heartbeat_counter;
3164         return status;
3165 }
3166
3167 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
3168 {
3169         uint32_t halt_status;
3170         int halt_status_unrecoverable = 0;
3171
3172         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
3173
3174         if (is_qla8022(ha)) {
3175                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3176                            __func__);
3177                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
3178                                 CRB_NIU_XG_PAUSE_CTL_P0 |
3179                                 CRB_NIU_XG_PAUSE_CTL_P1);
3180
3181                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
3182                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
3183                                    __func__);
3184                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
3185                         halt_status_unrecoverable = 1;
3186         } else if (is_qla8032(ha) || is_qla8042(ha)) {
3187                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
3188                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
3189                                    __func__);
3190                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
3191                         halt_status_unrecoverable = 1;
3192         }
3193
3194         /*
3195          * Since we cannot change dev_state in interrupt context,
3196          * set appropriate DPC flag then wakeup DPC
3197          */
3198         if (halt_status_unrecoverable) {
3199                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
3200         } else {
3201                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
3202                            __func__);
3203                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
3204         }
3205         qla4xxx_mailbox_premature_completion(ha);
3206         qla4xxx_wake_dpc(ha);
3207 }
3208
3209 /**
3210  * qla4_8xxx_watchdog - Poll dev state
3211  * @ha: Pointer to host adapter structure.
3212  *
3213  * Context: Interrupt
3214  **/
3215 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
3216 {
3217         uint32_t dev_state;
3218         uint32_t idc_ctrl;
3219
3220         /* don't poll if reset is going on */
3221         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
3222             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3223             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
3224                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
3225
3226                 if (qla4_8xxx_check_temp(ha)) {
3227                         if (is_qla8022(ha)) {
3228                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
3229                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
3230                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
3231                                                 CRB_NIU_XG_PAUSE_CTL_P1);
3232                         }
3233                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
3234                         qla4xxx_wake_dpc(ha);
3235                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
3236                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
3237
3238                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
3239                                    __func__);
3240
3241                         if (is_qla8032(ha) || is_qla8042(ha)) {
3242                                 idc_ctrl = qla4_83xx_rd_reg(ha,
3243                                                         QLA83XX_IDC_DRV_CTRL);
3244                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
3245                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
3246                                                    __func__);
3247                                         qla4xxx_mailbox_premature_completion(
3248                                                                             ha);
3249                                 }
3250                         }
3251
3252                         if ((is_qla8032(ha) || is_qla8042(ha)) ||
3253                             (is_qla8022(ha) && !ql4xdontresethba)) {
3254                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
3255                                 qla4xxx_wake_dpc(ha);
3256                         }
3257                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
3258                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3259                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
3260                             __func__);
3261                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
3262                         qla4xxx_wake_dpc(ha);
3263                 } else  {
3264                         /* Check firmware health */
3265                         if (qla4_8xxx_check_fw_alive(ha))
3266                                 qla4_8xxx_process_fw_error(ha);
3267                 }
3268         }
3269 }
3270
3271 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3272 {
3273         struct iscsi_session *sess;
3274         struct ddb_entry *ddb_entry;
3275         struct scsi_qla_host *ha;
3276
3277         sess = cls_sess->dd_data;
3278         ddb_entry = sess->dd_data;
3279         ha = ddb_entry->ha;
3280
3281         if (!(ddb_entry->ddb_type == FLASH_DDB))
3282                 return;
3283
3284         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
3285             !iscsi_is_session_online(cls_sess)) {
3286                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
3287                     INVALID_ENTRY) {
3288                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
3289                                         0) {
3290                                 atomic_set(&ddb_entry->retry_relogin_timer,
3291                                            INVALID_ENTRY);
3292                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
3293                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
3294                                 DEBUG2(ql4_printk(KERN_INFO, ha,
3295                                        "%s: index [%d] login device\n",
3296                                         __func__, ddb_entry->fw_ddb_index));
3297                         } else
3298                                 atomic_dec(&ddb_entry->retry_relogin_timer);
3299                 }
3300         }
3301
3302         /* Wait for relogin to timeout */
3303         if (atomic_read(&ddb_entry->relogin_timer) &&
3304             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
3305                 /*
3306                  * If the relogin times out and the device is
3307                  * still NOT ONLINE then try and relogin again.
3308                  */
3309                 if (!iscsi_is_session_online(cls_sess)) {
3310                         /* Reset retry relogin timer */
3311                         atomic_inc(&ddb_entry->relogin_retry_count);
3312                         DEBUG2(ql4_printk(KERN_INFO, ha,
3313                                 "%s: index[%d] relogin timed out-retrying"
3314                                 " relogin (%d), retry (%d)\n", __func__,
3315                                 ddb_entry->fw_ddb_index,
3316                                 atomic_read(&ddb_entry->relogin_retry_count),
3317                                 ddb_entry->default_time2wait + 4));
3318                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
3319                         atomic_set(&ddb_entry->retry_relogin_timer,
3320                                    ddb_entry->default_time2wait + 4);
3321                 }
3322         }
3323 }
3324
3325 /**
3326  * qla4xxx_timer - checks every second for work to do.
3327  * @ha: Pointer to host adapter structure.
3328  **/
3329 static void qla4xxx_timer(struct scsi_qla_host *ha)
3330 {
3331         int start_dpc = 0;
3332         uint16_t w;
3333
3334         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
3335
3336         /* If we are in the middle of AER/EEH processing
3337          * skip any processing and reschedule the timer
3338          */
3339         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3340                 mod_timer(&ha->timer, jiffies + HZ);
3341                 return;
3342         }
3343
3344         /* Hardware read to trigger an EEH error during mailbox waits. */
3345         if (!pci_channel_offline(ha->pdev))
3346                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
3347
3348         if (is_qla80XX(ha))
3349                 qla4_8xxx_watchdog(ha);
3350
3351         if (is_qla40XX(ha)) {
3352                 /* Check for heartbeat interval. */
3353                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
3354                     ha->heartbeat_interval != 0) {
3355                         ha->seconds_since_last_heartbeat++;
3356                         if (ha->seconds_since_last_heartbeat >
3357                             ha->heartbeat_interval + 2)
3358                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
3359                 }
3360         }
3361
3362         /* Process any deferred work. */
3363         if (!list_empty(&ha->work_list))
3364                 start_dpc++;
3365
3366         /* Wakeup the dpc routine for this adapter, if needed. */
3367         if (start_dpc ||
3368              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3369              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
3370              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
3371              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3372              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3373              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
3374              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
3375              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
3376              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
3377              test_bit(DPC_AEN, &ha->dpc_flags)) {
3378                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
3379                               " - dpc flags = 0x%lx\n",
3380                               ha->host_no, __func__, ha->dpc_flags));
3381                 qla4xxx_wake_dpc(ha);
3382         }
3383
3384         /* Reschedule timer thread to call us back in one second */
3385         mod_timer(&ha->timer, jiffies + HZ);
3386
3387         DEBUG2(ha->seconds_since_last_intr++);
3388 }
3389
3390 /**
3391  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
3392  * @ha: Pointer to host adapter structure.
3393  *
3394  * This routine stalls the driver until all outstanding commands are returned.
3395  * Caller must release the Hardware Lock prior to calling this routine.
3396  **/
3397 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
3398 {
3399         uint32_t index = 0;
3400         unsigned long flags;
3401         struct scsi_cmnd *cmd;
3402
3403         unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
3404
3405         DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
3406             "complete\n", WAIT_CMD_TOV));
3407
3408         while (!time_after_eq(jiffies, wtime)) {
3409                 spin_lock_irqsave(&ha->hardware_lock, flags);
3410                 /* Find a command that hasn't completed. */
3411                 for (index = 0; index < ha->host->can_queue; index++) {
3412                         cmd = scsi_host_find_tag(ha->host, index);
3413                         /*
3414                          * We cannot just check if the index is valid,
3415                          * becase if we are run from the scsi eh, then
3416                          * the scsi/block layer is going to prevent
3417                          * the tag from being released.
3418                          */
3419                         if (cmd != NULL && CMD_SP(cmd))
3420                                 break;
3421                 }
3422                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3423
3424                 /* If No Commands are pending, wait is complete */
3425                 if (index == ha->host->can_queue)
3426                         return QLA_SUCCESS;
3427
3428                 msleep(1000);
3429         }
3430         /* If we timed out on waiting for commands to come back
3431          * return ERROR. */
3432         return QLA_ERROR;
3433 }
3434
3435 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
3436 {
3437         uint32_t ctrl_status;
3438         unsigned long flags = 0;
3439
3440         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
3441
3442         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
3443                 return QLA_ERROR;
3444
3445         spin_lock_irqsave(&ha->hardware_lock, flags);
3446
3447         /*
3448          * If the SCSI Reset Interrupt bit is set, clear it.
3449          * Otherwise, the Soft Reset won't work.
3450          */
3451         ctrl_status = readw(&ha->reg->ctrl_status);
3452         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
3453                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
3454
3455         /* Issue Soft Reset */
3456         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
3457         readl(&ha->reg->ctrl_status);
3458
3459         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3460         return QLA_SUCCESS;
3461 }
3462
3463 /**
3464  * qla4xxx_soft_reset - performs soft reset.
3465  * @ha: Pointer to host adapter structure.
3466  **/
3467 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
3468 {
3469         uint32_t max_wait_time;
3470         unsigned long flags = 0;
3471         int status;
3472         uint32_t ctrl_status;
3473
3474         status = qla4xxx_hw_reset(ha);
3475         if (status != QLA_SUCCESS)
3476                 return status;
3477
3478         status = QLA_ERROR;
3479         /* Wait until the Network Reset Intr bit is cleared */
3480         max_wait_time = RESET_INTR_TOV;
3481         do {
3482                 spin_lock_irqsave(&ha->hardware_lock, flags);
3483                 ctrl_status = readw(&ha->reg->ctrl_status);
3484                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3485
3486                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
3487                         break;
3488
3489                 msleep(1000);
3490         } while ((--max_wait_time));
3491
3492         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
3493                 DEBUG2(printk(KERN_WARNING
3494                               "scsi%ld: Network Reset Intr not cleared by "
3495                               "Network function, clearing it now!\n",
3496                               ha->host_no));
3497                 spin_lock_irqsave(&ha->hardware_lock, flags);
3498                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
3499                 readl(&ha->reg->ctrl_status);
3500                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3501         }
3502
3503         /* Wait until the firmware tells us the Soft Reset is done */
3504         max_wait_time = SOFT_RESET_TOV;
3505         do {
3506                 spin_lock_irqsave(&ha->hardware_lock, flags);
3507                 ctrl_status = readw(&ha->reg->ctrl_status);
3508                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3509
3510                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
3511                         status = QLA_SUCCESS;
3512                         break;
3513                 }
3514
3515                 msleep(1000);
3516         } while ((--max_wait_time));
3517
3518         /*
3519          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
3520          * after the soft reset has taken place.
3521          */
3522         spin_lock_irqsave(&ha->hardware_lock, flags);
3523         ctrl_status = readw(&ha->reg->ctrl_status);
3524         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
3525                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
3526                 readl(&ha->reg->ctrl_status);
3527         }
3528         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3529
3530         /* If soft reset fails then most probably the bios on other
3531          * function is also enabled.
3532          * Since the initialization is sequential the other fn
3533          * wont be able to acknowledge the soft reset.
3534          * Issue a force soft reset to workaround this scenario.
3535          */
3536         if (max_wait_time == 0) {
3537                 /* Issue Force Soft Reset */
3538                 spin_lock_irqsave(&ha->hardware_lock, flags);
3539                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
3540                 readl(&ha->reg->ctrl_status);
3541                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3542                 /* Wait until the firmware tells us the Soft Reset is done */
3543                 max_wait_time = SOFT_RESET_TOV;
3544                 do {
3545                         spin_lock_irqsave(&ha->hardware_lock, flags);
3546                         ctrl_status = readw(&ha->reg->ctrl_status);
3547                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3548
3549                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
3550                                 status = QLA_SUCCESS;
3551                                 break;
3552                         }
3553
3554                         msleep(1000);
3555                 } while ((--max_wait_time));
3556         }
3557
3558         return status;
3559 }
3560
3561 /**
3562  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
3563  * @ha: Pointer to host adapter structure.
3564  * @res: returned scsi status
3565  *
3566  * This routine is called just prior to a HARD RESET to return all
3567  * outstanding commands back to the Operating System.
3568  * Caller should make sure that the following locks are released
3569  * before this calling routine: Hardware lock, and io_request_lock.
3570  **/
3571 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
3572 {
3573         struct srb *srb;
3574         int i;
3575         unsigned long flags;
3576
3577         spin_lock_irqsave(&ha->hardware_lock, flags);
3578         for (i = 0; i < ha->host->can_queue; i++) {
3579                 srb = qla4xxx_del_from_active_array(ha, i);
3580                 if (srb != NULL) {
3581                         srb->cmd->result = res;
3582                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
3583                 }
3584         }
3585         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3586 }
3587
3588 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
3589 {
3590         clear_bit(AF_ONLINE, &ha->flags);
3591
3592         /* Disable the board */
3593         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
3594
3595         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3596         qla4xxx_mark_all_devices_missing(ha);
3597         clear_bit(AF_INIT_DONE, &ha->flags);
3598 }
3599
3600 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
3601 {
3602         struct iscsi_session *sess;
3603         struct ddb_entry *ddb_entry;
3604
3605         sess = cls_session->dd_data;
3606         ddb_entry = sess->dd_data;
3607         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
3608
3609         if (ddb_entry->ddb_type == FLASH_DDB)
3610                 iscsi_block_session(ddb_entry->sess);
3611         else
3612                 iscsi_session_failure(cls_session->dd_data,
3613                                       ISCSI_ERR_CONN_FAILED);
3614 }
3615
3616 /**
3617  * qla4xxx_recover_adapter - recovers adapter after a fatal error
3618  * @ha: Pointer to host adapter structure.
3619  **/
3620 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
3621 {
3622         int status = QLA_ERROR;
3623         uint8_t reset_chip = 0;
3624         uint32_t dev_state;
3625         unsigned long wait;
3626
3627         /* Stall incoming I/O until we are done */
3628         scsi_block_requests(ha->host);
3629         clear_bit(AF_ONLINE, &ha->flags);
3630         clear_bit(AF_LINK_UP, &ha->flags);
3631
3632         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
3633
3634         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3635
3636         if ((is_qla8032(ha) || is_qla8042(ha)) &&
3637             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
3638                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3639                            __func__);
3640                 /* disable pause frame for ISP83xx */
3641                 qla4_83xx_disable_pause(ha);
3642         }
3643
3644         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
3645
3646         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
3647                 reset_chip = 1;
3648
3649         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
3650          * do not reset adapter, jump to initialize_adapter */
3651         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3652                 status = QLA_SUCCESS;
3653                 goto recover_ha_init_adapter;
3654         }
3655
3656         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
3657          * from eh_host_reset or ioctl module */
3658         if (is_qla80XX(ha) && !reset_chip &&
3659             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
3660
3661                 DEBUG2(ql4_printk(KERN_INFO, ha,
3662                     "scsi%ld: %s - Performing stop_firmware...\n",
3663                     ha->host_no, __func__));
3664                 status = ha->isp_ops->reset_firmware(ha);
3665                 if (status == QLA_SUCCESS) {
3666                         if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3667                                 qla4xxx_cmd_wait(ha);
3668
3669                         ha->isp_ops->disable_intrs(ha);
3670                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3671                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3672                 } else {
3673                         /* If the stop_firmware fails then
3674                          * reset the entire chip */
3675                         reset_chip = 1;
3676                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3677                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
3678                 }
3679         }
3680
3681         /* Issue full chip reset if recovering from a catastrophic error,
3682          * or if stop_firmware fails for ISP-8xxx.
3683          * This is the default case for ISP-4xxx */
3684         if (is_qla40XX(ha) || reset_chip) {
3685                 if (is_qla40XX(ha))
3686                         goto chip_reset;
3687
3688                 /* Check if 8XXX firmware is alive or not
3689                  * We may have arrived here from NEED_RESET
3690                  * detection only */
3691                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
3692                         goto chip_reset;
3693
3694                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
3695                 while (time_before(jiffies, wait)) {
3696                         if (qla4_8xxx_check_fw_alive(ha)) {
3697                                 qla4xxx_mailbox_premature_completion(ha);
3698                                 break;
3699                         }
3700
3701                         set_current_state(TASK_UNINTERRUPTIBLE);
3702                         schedule_timeout(HZ);
3703                 }
3704 chip_reset:
3705                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3706                         qla4xxx_cmd_wait(ha);
3707
3708                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3709                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3710                 DEBUG2(ql4_printk(KERN_INFO, ha,
3711                     "scsi%ld: %s - Performing chip reset..\n",
3712                     ha->host_no, __func__));
3713                 status = ha->isp_ops->reset_chip(ha);
3714         }
3715
3716         /* Flush any pending ddb changed AENs */
3717         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3718
3719 recover_ha_init_adapter:
3720         /* Upon successful firmware/chip reset, re-initialize the adapter */
3721         if (status == QLA_SUCCESS) {
3722                 /* For ISP-4xxx, force function 1 to always initialize
3723                  * before function 3 to prevent both funcions from
3724                  * stepping on top of the other */
3725                 if (is_qla40XX(ha) && (ha->mac_index == 3))
3726                         ssleep(6);
3727
3728                 /* NOTE: AF_ONLINE flag set upon successful completion of
3729                  *       qla4xxx_initialize_adapter */
3730                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
3731         }
3732
3733         /* Retry failed adapter initialization, if necessary
3734          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
3735          * case to prevent ping-pong resets between functions */
3736         if (!test_bit(AF_ONLINE, &ha->flags) &&
3737             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3738                 /* Adapter initialization failed, see if we can retry
3739                  * resetting the ha.
3740                  * Since we don't want to block the DPC for too long
3741                  * with multiple resets in the same thread,
3742                  * utilize DPC to retry */
3743                 if (is_qla80XX(ha)) {
3744                         ha->isp_ops->idc_lock(ha);
3745                         dev_state = qla4_8xxx_rd_direct(ha,
3746                                                         QLA8XXX_CRB_DEV_STATE);
3747                         ha->isp_ops->idc_unlock(ha);
3748                         if (dev_state == QLA8XXX_DEV_FAILED) {
3749                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
3750                                            "recover adapter. H/W is in Failed "
3751                                            "state\n", __func__);
3752                                 qla4xxx_dead_adapter_cleanup(ha);
3753                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3754                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3755                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3756                                                 &ha->dpc_flags);
3757                                 status = QLA_ERROR;
3758
3759                                 goto exit_recover;
3760                         }
3761                 }
3762
3763                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
3764                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
3765                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
3766                                       "(%d) more times\n", ha->host_no,
3767                                       ha->retry_reset_ha_cnt));
3768                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3769                         status = QLA_ERROR;
3770                 } else {
3771                         if (ha->retry_reset_ha_cnt > 0) {
3772                                 /* Schedule another Reset HA--DPC will retry */
3773                                 ha->retry_reset_ha_cnt--;
3774                                 DEBUG2(printk("scsi%ld: recover adapter - "
3775                                               "retry remaining %d\n",
3776                                               ha->host_no,
3777                                               ha->retry_reset_ha_cnt));
3778                                 status = QLA_ERROR;
3779                         }
3780
3781                         if (ha->retry_reset_ha_cnt == 0) {
3782                                 /* Recover adapter retries have been exhausted.
3783                                  * Adapter DEAD */
3784                                 DEBUG2(printk("scsi%ld: recover adapter "
3785                                               "failed - board disabled\n",
3786                                               ha->host_no));
3787                                 qla4xxx_dead_adapter_cleanup(ha);
3788                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3789                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3790                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3791                                           &ha->dpc_flags);
3792                                 status = QLA_ERROR;
3793                         }
3794                 }
3795         } else {
3796                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3797                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3798                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3799         }
3800
3801 exit_recover:
3802         ha->adapter_error_count++;
3803
3804         if (test_bit(AF_ONLINE, &ha->flags))
3805                 ha->isp_ops->enable_intrs(ha);
3806
3807         scsi_unblock_requests(ha->host);
3808
3809         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3810         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
3811             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
3812
3813         return status;
3814 }
3815
3816 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
3817 {
3818         struct iscsi_session *sess;
3819         struct ddb_entry *ddb_entry;
3820         struct scsi_qla_host *ha;
3821
3822         sess = cls_session->dd_data;
3823         ddb_entry = sess->dd_data;
3824         ha = ddb_entry->ha;
3825         if (!iscsi_is_session_online(cls_session)) {
3826                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
3827                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3828                                    " unblock session\n", ha->host_no, __func__,
3829                                    ddb_entry->fw_ddb_index);
3830                         iscsi_unblock_session(ddb_entry->sess);
3831                 } else {
3832                         /* Trigger relogin */
3833                         if (ddb_entry->ddb_type == FLASH_DDB) {
3834                                 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
3835                                       test_bit(DF_DISABLE_RELOGIN,
3836                                                &ddb_entry->flags)))
3837                                         qla4xxx_arm_relogin_timer(ddb_entry);
3838                         } else
3839                                 iscsi_session_failure(cls_session->dd_data,
3840                                                       ISCSI_ERR_CONN_FAILED);
3841                 }
3842         }
3843 }
3844
3845 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
3846 {
3847         struct iscsi_session *sess;
3848         struct ddb_entry *ddb_entry;
3849         struct scsi_qla_host *ha;
3850
3851         sess = cls_session->dd_data;
3852         ddb_entry = sess->dd_data;
3853         ha = ddb_entry->ha;
3854         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3855                    " unblock session\n", ha->host_no, __func__,
3856                    ddb_entry->fw_ddb_index);
3857
3858         iscsi_unblock_session(ddb_entry->sess);
3859
3860         /* Start scan target */
3861         if (test_bit(AF_ONLINE, &ha->flags)) {
3862                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3863                            " start scan\n", ha->host_no, __func__,
3864                            ddb_entry->fw_ddb_index);
3865                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
3866         }
3867         return QLA_SUCCESS;
3868 }
3869
3870 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
3871 {
3872         struct iscsi_session *sess;
3873         struct ddb_entry *ddb_entry;
3874         struct scsi_qla_host *ha;
3875         int status = QLA_SUCCESS;
3876
3877         sess = cls_session->dd_data;
3878         ddb_entry = sess->dd_data;
3879         ha = ddb_entry->ha;
3880         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3881                    " unblock user space session\n", ha->host_no, __func__,
3882                    ddb_entry->fw_ddb_index);
3883
3884         if (!iscsi_is_session_online(cls_session)) {
3885                 iscsi_conn_start(ddb_entry->conn);
3886                 iscsi_conn_login_event(ddb_entry->conn,
3887                                        ISCSI_CONN_STATE_LOGGED_IN);
3888         } else {
3889                 ql4_printk(KERN_INFO, ha,
3890                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
3891                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
3892                            cls_session->sid);
3893                 status = QLA_ERROR;
3894         }
3895
3896         return status;
3897 }
3898
3899 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
3900 {
3901         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
3902 }
3903
3904 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3905 {
3906         uint16_t relogin_timer;
3907         struct iscsi_session *sess;
3908         struct ddb_entry *ddb_entry;
3909         struct scsi_qla_host *ha;
3910
3911         sess = cls_sess->dd_data;
3912         ddb_entry = sess->dd_data;
3913         ha = ddb_entry->ha;
3914
3915         relogin_timer = max(ddb_entry->default_relogin_timeout,
3916                             (uint16_t)RELOGIN_TOV);
3917         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
3918
3919         DEBUG2(ql4_printk(KERN_INFO, ha,
3920                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
3921                           ddb_entry->fw_ddb_index, relogin_timer));
3922
3923         qla4xxx_login_flash_ddb(cls_sess);
3924 }
3925
3926 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
3927 {
3928         struct iscsi_session *sess;
3929         struct ddb_entry *ddb_entry;
3930         struct scsi_qla_host *ha;
3931
3932         sess = cls_sess->dd_data;
3933         ddb_entry = sess->dd_data;
3934         ha = ddb_entry->ha;
3935
3936         if (!(ddb_entry->ddb_type == FLASH_DDB))
3937                 return;
3938
3939         if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
3940                 return;
3941
3942         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
3943             !iscsi_is_session_online(cls_sess)) {
3944                 DEBUG2(ql4_printk(KERN_INFO, ha,
3945                                   "relogin issued\n"));
3946                 qla4xxx_relogin_flash_ddb(cls_sess);
3947         }
3948 }
3949
3950 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
3951 {
3952         if (ha->dpc_thread)
3953                 queue_work(ha->dpc_thread, &ha->dpc_work);
3954 }
3955
3956 static struct qla4_work_evt *
3957 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
3958                    enum qla4_work_type type)
3959 {
3960         struct qla4_work_evt *e;
3961         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
3962
3963         e = kzalloc(size, GFP_ATOMIC);
3964         if (!e)
3965                 return NULL;
3966
3967         INIT_LIST_HEAD(&e->list);
3968         e->type = type;
3969         return e;
3970 }
3971
3972 static void qla4xxx_post_work(struct scsi_qla_host *ha,
3973                              struct qla4_work_evt *e)
3974 {
3975         unsigned long flags;
3976
3977         spin_lock_irqsave(&ha->work_lock, flags);
3978         list_add_tail(&e->list, &ha->work_list);
3979         spin_unlock_irqrestore(&ha->work_lock, flags);
3980         qla4xxx_wake_dpc(ha);
3981 }
3982
3983 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
3984                           enum iscsi_host_event_code aen_code,
3985                           uint32_t data_size, uint8_t *data)
3986 {
3987         struct qla4_work_evt *e;
3988
3989         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
3990         if (!e)
3991                 return QLA_ERROR;
3992
3993         e->u.aen.code = aen_code;
3994         e->u.aen.data_size = data_size;
3995         memcpy(e->u.aen.data, data, data_size);
3996
3997         qla4xxx_post_work(ha, e);
3998
3999         return QLA_SUCCESS;
4000 }
4001
4002 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
4003                                uint32_t status, uint32_t pid,
4004                                uint32_t data_size, uint8_t *data)
4005 {
4006         struct qla4_work_evt *e;
4007
4008         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
4009         if (!e)
4010                 return QLA_ERROR;
4011
4012         e->u.ping.status = status;
4013         e->u.ping.pid = pid;
4014         e->u.ping.data_size = data_size;
4015         memcpy(e->u.ping.data, data, data_size);
4016
4017         qla4xxx_post_work(ha, e);
4018
4019         return QLA_SUCCESS;
4020 }
4021
4022 static void qla4xxx_do_work(struct scsi_qla_host *ha)
4023 {
4024         struct qla4_work_evt *e, *tmp;
4025         unsigned long flags;
4026         LIST_HEAD(work);
4027
4028         spin_lock_irqsave(&ha->work_lock, flags);
4029         list_splice_init(&ha->work_list, &work);
4030         spin_unlock_irqrestore(&ha->work_lock, flags);
4031
4032         list_for_each_entry_safe(e, tmp, &work, list) {
4033                 list_del_init(&e->list);
4034
4035                 switch (e->type) {
4036                 case QLA4_EVENT_AEN:
4037                         iscsi_post_host_event(ha->host_no,
4038                                               &qla4xxx_iscsi_transport,
4039                                               e->u.aen.code,
4040                                               e->u.aen.data_size,
4041                                               e->u.aen.data);
4042                         break;
4043                 case QLA4_EVENT_PING_STATUS:
4044                         iscsi_ping_comp_event(ha->host_no,
4045                                               &qla4xxx_iscsi_transport,
4046                                               e->u.ping.status,
4047                                               e->u.ping.pid,
4048                                               e->u.ping.data_size,
4049                                               e->u.ping.data);
4050                         break;
4051                 default:
4052                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
4053                                    "supported", e->type);
4054                 }
4055                 kfree(e);
4056         }
4057 }
4058
4059 /**
4060  * qla4xxx_do_dpc - dpc routine
4061  * @data: in our case pointer to adapter structure
4062  *
4063  * This routine is a task that is schedule by the interrupt handler
4064  * to perform the background processing for interrupts.  We put it
4065  * on a task queue that is consumed whenever the scheduler runs; that's
4066  * so you can do anything (i.e. put the process to sleep etc).  In fact,
4067  * the mid-level tries to sleep when it reaches the driver threshold
4068  * "host->can_queue". This can cause a panic if we were in our interrupt code.
4069  **/
4070 static void qla4xxx_do_dpc(struct work_struct *work)
4071 {
4072         struct scsi_qla_host *ha =
4073                 container_of(work, struct scsi_qla_host, dpc_work);
4074         int status = QLA_ERROR;
4075
4076         DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
4077             "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
4078             ha->host_no, __func__, ha->flags, ha->dpc_flags))
4079
4080         /* Initialization not yet finished. Don't do anything yet. */
4081         if (!test_bit(AF_INIT_DONE, &ha->flags))
4082                 return;
4083
4084         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4085                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
4086                     ha->host_no, __func__, ha->flags));
4087                 return;
4088         }
4089
4090         /* post events to application */
4091         qla4xxx_do_work(ha);
4092
4093         if (is_qla80XX(ha)) {
4094                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
4095                         if (is_qla8032(ha) || is_qla8042(ha)) {
4096                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4097                                            __func__);
4098                                 /* disable pause frame for ISP83xx */
4099                                 qla4_83xx_disable_pause(ha);
4100                         }
4101
4102                         ha->isp_ops->idc_lock(ha);
4103                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
4104                                             QLA8XXX_DEV_FAILED);
4105                         ha->isp_ops->idc_unlock(ha);
4106                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
4107                         qla4_8xxx_device_state_handler(ha);
4108                 }
4109
4110                 if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
4111                         if (is_qla8042(ha)) {
4112                                 if (ha->idc_info.info2 &
4113                                     ENABLE_INTERNAL_LOOPBACK) {
4114                                         ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
4115                                                    __func__);
4116                                         status = qla4_84xx_config_acb(ha,
4117                                                             ACB_CONFIG_DISABLE);
4118                                         if (status != QLA_SUCCESS) {
4119                                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
4120                                                            __func__);
4121                                         }
4122                                 }
4123                         }
4124                         qla4_83xx_post_idc_ack(ha);
4125                         clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
4126                 }
4127
4128                 if (is_qla8042(ha) &&
4129                     test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
4130                         ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
4131                                    __func__);
4132                         if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
4133                             QLA_SUCCESS) {
4134                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
4135                                            __func__);
4136                         }
4137                         clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
4138                 }
4139
4140                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4141                         qla4_8xxx_need_qsnt_handler(ha);
4142                 }
4143         }
4144
4145         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
4146             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4147             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4148             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
4149                 if ((is_qla8022(ha) && ql4xdontresethba) ||
4150                     ((is_qla8032(ha) || is_qla8042(ha)) &&
4151                      qla4_83xx_idc_dontreset(ha))) {
4152                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
4153                             ha->host_no, __func__));
4154                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4155                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
4156                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4157                         goto dpc_post_reset_ha;
4158                 }
4159                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4160                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
4161                         qla4xxx_recover_adapter(ha);
4162
4163                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4164                         uint8_t wait_time = RESET_INTR_TOV;
4165
4166                         while ((readw(&ha->reg->ctrl_status) &
4167                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
4168                                 if (--wait_time == 0)
4169                                         break;
4170                                 msleep(1000);
4171                         }
4172                         if (wait_time == 0)
4173                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
4174                                               "bit not cleared-- resetting\n",
4175                                               ha->host_no, __func__));
4176                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4177                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
4178                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4179                                 status = qla4xxx_recover_adapter(ha);
4180                         }
4181                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
4182                         if (status == QLA_SUCCESS)
4183                                 ha->isp_ops->enable_intrs(ha);
4184                 }
4185         }
4186
4187 dpc_post_reset_ha:
4188         /* ---- process AEN? --- */
4189         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
4190                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
4191
4192         /* ---- Get DHCP IP Address? --- */
4193         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
4194                 qla4xxx_get_dhcp_ip_address(ha);
4195
4196         /* ---- relogin device? --- */
4197         if (adapter_up(ha) &&
4198             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
4199                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
4200         }
4201
4202         /* ---- link change? --- */
4203         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
4204             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
4205                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
4206                         /* ---- link down? --- */
4207                         qla4xxx_mark_all_devices_missing(ha);
4208                 } else {
4209                         /* ---- link up? --- *
4210                          * F/W will auto login to all devices ONLY ONCE after
4211                          * link up during driver initialization and runtime
4212                          * fatal error recovery.  Therefore, the driver must
4213                          * manually relogin to devices when recovering from
4214                          * connection failures, logouts, expired KATO, etc. */
4215                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
4216                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
4217                                 iscsi_host_for_each_session(ha->host,
4218                                                 qla4xxx_login_flash_ddb);
4219                         } else
4220                                 qla4xxx_relogin_all_devices(ha);
4221                 }
4222         }
4223 }
4224
4225 /**
4226  * qla4xxx_free_adapter - release the adapter
4227  * @ha: pointer to adapter structure
4228  **/
4229 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
4230 {
4231         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
4232
4233         /* Turn-off interrupts on the card. */
4234         ha->isp_ops->disable_intrs(ha);
4235
4236         if (is_qla40XX(ha)) {
4237                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
4238                        &ha->reg->ctrl_status);
4239                 readl(&ha->reg->ctrl_status);
4240         } else if (is_qla8022(ha)) {
4241                 writel(0, &ha->qla4_82xx_reg->host_int);
4242                 readl(&ha->qla4_82xx_reg->host_int);
4243         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4244                 writel(0, &ha->qla4_83xx_reg->risc_intr);
4245                 readl(&ha->qla4_83xx_reg->risc_intr);
4246         }
4247
4248         /* Remove timer thread, if present */
4249         if (ha->timer_active)
4250                 qla4xxx_stop_timer(ha);
4251
4252         /* Kill the kernel thread for this host */
4253         if (ha->dpc_thread)
4254                 destroy_workqueue(ha->dpc_thread);
4255
4256         /* Kill the kernel thread for this host */
4257         if (ha->task_wq)
4258                 destroy_workqueue(ha->task_wq);
4259
4260         /* Put firmware in known state */
4261         ha->isp_ops->reset_firmware(ha);
4262
4263         if (is_qla80XX(ha)) {
4264                 ha->isp_ops->idc_lock(ha);
4265                 qla4_8xxx_clear_drv_active(ha);
4266                 ha->isp_ops->idc_unlock(ha);
4267         }
4268
4269         /* Detach interrupts */
4270         qla4xxx_free_irqs(ha);
4271
4272         /* free extra memory */
4273         qla4xxx_mem_free(ha);
4274 }
4275
4276 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
4277 {
4278         int status = 0;
4279         unsigned long mem_base, mem_len, db_base, db_len;
4280         struct pci_dev *pdev = ha->pdev;
4281
4282         status = pci_request_regions(pdev, DRIVER_NAME);
4283         if (status) {
4284                 printk(KERN_WARNING
4285                     "scsi(%ld) Failed to reserve PIO regions (%s) "
4286                     "status=%d\n", ha->host_no, pci_name(pdev), status);
4287                 goto iospace_error_exit;
4288         }
4289
4290         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
4291             __func__, pdev->revision));
4292         ha->revision_id = pdev->revision;
4293
4294         /* remap phys address */
4295         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
4296         mem_len = pci_resource_len(pdev, 0);
4297         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
4298             __func__, mem_base, mem_len));
4299
4300         /* mapping of pcibase pointer */
4301         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
4302         if (!ha->nx_pcibase) {
4303                 printk(KERN_ERR
4304                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
4305                 pci_release_regions(ha->pdev);
4306                 goto iospace_error_exit;
4307         }
4308
4309         /* Mapping of IO base pointer, door bell read and write pointer */
4310
4311         /* mapping of IO base pointer */
4312         if (is_qla8022(ha)) {
4313                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
4314                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
4315                                      (ha->pdev->devfn << 11));
4316                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
4317                                     QLA82XX_CAM_RAM_DB2);
4318         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4319                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
4320                                     ((uint8_t *)ha->nx_pcibase);
4321         }
4322
4323         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
4324         db_len = pci_resource_len(pdev, 4);
4325
4326         return 0;
4327 iospace_error_exit:
4328         return -ENOMEM;
4329 }
4330
4331 /***
4332  * qla4xxx_iospace_config - maps registers
4333  * @ha: pointer to adapter structure
4334  *
4335  * This routines maps HBA's registers from the pci address space
4336  * into the kernel virtual address space for memory mapped i/o.
4337  **/
4338 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
4339 {
4340         unsigned long pio, pio_len, pio_flags;
4341         unsigned long mmio, mmio_len, mmio_flags;
4342
4343         pio = pci_resource_start(ha->pdev, 0);
4344         pio_len = pci_resource_len(ha->pdev, 0);
4345         pio_flags = pci_resource_flags(ha->pdev, 0);
4346         if (pio_flags & IORESOURCE_IO) {
4347                 if (pio_len < MIN_IOBASE_LEN) {
4348                         ql4_printk(KERN_WARNING, ha,
4349                                 "Invalid PCI I/O region size\n");
4350                         pio = 0;
4351                 }
4352         } else {
4353                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
4354                 pio = 0;
4355         }
4356
4357         /* Use MMIO operations for all accesses. */
4358         mmio = pci_resource_start(ha->pdev, 1);
4359         mmio_len = pci_resource_len(ha->pdev, 1);
4360         mmio_flags = pci_resource_flags(ha->pdev, 1);
4361
4362         if (!(mmio_flags & IORESOURCE_MEM)) {
4363                 ql4_printk(KERN_ERR, ha,
4364                     "region #0 not an MMIO resource, aborting\n");
4365
4366                 goto iospace_error_exit;
4367         }
4368
4369         if (mmio_len < MIN_IOBASE_LEN) {
4370                 ql4_printk(KERN_ERR, ha,
4371                     "Invalid PCI mem region size, aborting\n");
4372                 goto iospace_error_exit;
4373         }
4374
4375         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
4376                 ql4_printk(KERN_WARNING, ha,
4377                     "Failed to reserve PIO/MMIO regions\n");
4378
4379                 goto iospace_error_exit;
4380         }
4381
4382         ha->pio_address = pio;
4383         ha->pio_length = pio_len;
4384         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
4385         if (!ha->reg) {
4386                 ql4_printk(KERN_ERR, ha,
4387                     "cannot remap MMIO, aborting\n");
4388
4389                 goto iospace_error_exit;
4390         }
4391
4392         return 0;
4393
4394 iospace_error_exit:
4395         return -ENOMEM;
4396 }
4397
4398 static struct isp_operations qla4xxx_isp_ops = {
4399         .iospace_config         = qla4xxx_iospace_config,
4400         .pci_config             = qla4xxx_pci_config,
4401         .disable_intrs          = qla4xxx_disable_intrs,
4402         .enable_intrs           = qla4xxx_enable_intrs,
4403         .start_firmware         = qla4xxx_start_firmware,
4404         .intr_handler           = qla4xxx_intr_handler,
4405         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
4406         .reset_chip             = qla4xxx_soft_reset,
4407         .reset_firmware         = qla4xxx_hw_reset,
4408         .queue_iocb             = qla4xxx_queue_iocb,
4409         .complete_iocb          = qla4xxx_complete_iocb,
4410         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
4411         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
4412         .get_sys_info           = qla4xxx_get_sys_info,
4413         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
4414         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
4415 };
4416
4417 static struct isp_operations qla4_82xx_isp_ops = {
4418         .iospace_config         = qla4_8xxx_iospace_config,
4419         .pci_config             = qla4_8xxx_pci_config,
4420         .disable_intrs          = qla4_82xx_disable_intrs,
4421         .enable_intrs           = qla4_82xx_enable_intrs,
4422         .start_firmware         = qla4_8xxx_load_risc,
4423         .restart_firmware       = qla4_82xx_try_start_fw,
4424         .intr_handler           = qla4_82xx_intr_handler,
4425         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
4426         .need_reset             = qla4_8xxx_need_reset,
4427         .reset_chip             = qla4_82xx_isp_reset,
4428         .reset_firmware         = qla4_8xxx_stop_firmware,
4429         .queue_iocb             = qla4_82xx_queue_iocb,
4430         .complete_iocb          = qla4_82xx_complete_iocb,
4431         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
4432         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
4433         .get_sys_info           = qla4_8xxx_get_sys_info,
4434         .rd_reg_direct          = qla4_82xx_rd_32,
4435         .wr_reg_direct          = qla4_82xx_wr_32,
4436         .rd_reg_indirect        = qla4_82xx_md_rd_32,
4437         .wr_reg_indirect        = qla4_82xx_md_wr_32,
4438         .idc_lock               = qla4_82xx_idc_lock,
4439         .idc_unlock             = qla4_82xx_idc_unlock,
4440         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
4441         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
4442         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
4443 };
4444
4445 static struct isp_operations qla4_83xx_isp_ops = {
4446         .iospace_config         = qla4_8xxx_iospace_config,
4447         .pci_config             = qla4_8xxx_pci_config,
4448         .disable_intrs          = qla4_83xx_disable_intrs,
4449         .enable_intrs           = qla4_83xx_enable_intrs,
4450         .start_firmware         = qla4_8xxx_load_risc,
4451         .restart_firmware       = qla4_83xx_start_firmware,
4452         .intr_handler           = qla4_83xx_intr_handler,
4453         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
4454         .need_reset             = qla4_8xxx_need_reset,
4455         .reset_chip             = qla4_83xx_isp_reset,
4456         .reset_firmware         = qla4_8xxx_stop_firmware,
4457         .queue_iocb             = qla4_83xx_queue_iocb,
4458         .complete_iocb          = qla4_83xx_complete_iocb,
4459         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
4460         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
4461         .get_sys_info           = qla4_8xxx_get_sys_info,
4462         .rd_reg_direct          = qla4_83xx_rd_reg,
4463         .wr_reg_direct          = qla4_83xx_wr_reg,
4464         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
4465         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
4466         .idc_lock               = qla4_83xx_drv_lock,
4467         .idc_unlock             = qla4_83xx_drv_unlock,
4468         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
4469         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
4470         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
4471 };
4472
4473 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
4474 {
4475         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
4476 }
4477
4478 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
4479 {
4480         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
4481 }
4482
4483 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
4484 {
4485         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
4486 }
4487
4488 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
4489 {
4490         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
4491 }
4492
4493 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
4494 {
4495         struct scsi_qla_host *ha = data;
4496         char *str = buf;
4497         int rc;
4498
4499         switch (type) {
4500         case ISCSI_BOOT_ETH_FLAGS:
4501                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
4502                 break;
4503         case ISCSI_BOOT_ETH_INDEX:
4504                 rc = sprintf(str, "0\n");
4505                 break;
4506         case ISCSI_BOOT_ETH_MAC:
4507                 rc = sysfs_format_mac(str, ha->my_mac,
4508                                       MAC_ADDR_LEN);
4509                 break;
4510         default:
4511                 rc = -ENOSYS;
4512                 break;
4513         }
4514         return rc;
4515 }
4516
4517 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
4518 {
4519         int rc;
4520
4521         switch (type) {
4522         case ISCSI_BOOT_ETH_FLAGS:
4523         case ISCSI_BOOT_ETH_MAC:
4524         case ISCSI_BOOT_ETH_INDEX:
4525                 rc = S_IRUGO;
4526                 break;
4527         default:
4528                 rc = 0;
4529                 break;
4530         }
4531         return rc;
4532 }
4533
4534 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
4535 {
4536         struct scsi_qla_host *ha = data;
4537         char *str = buf;
4538         int rc;
4539
4540         switch (type) {
4541         case ISCSI_BOOT_INI_INITIATOR_NAME:
4542                 rc = sprintf(str, "%s\n", ha->name_string);
4543                 break;
4544         default:
4545                 rc = -ENOSYS;
4546                 break;
4547         }
4548         return rc;
4549 }
4550
4551 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
4552 {
4553         int rc;
4554
4555         switch (type) {
4556         case ISCSI_BOOT_INI_INITIATOR_NAME:
4557                 rc = S_IRUGO;
4558                 break;
4559         default:
4560                 rc = 0;
4561                 break;
4562         }
4563         return rc;
4564 }
4565
4566 static ssize_t
4567 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
4568                            char *buf)
4569 {
4570         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4571         char *str = buf;
4572         int rc;
4573
4574         switch (type) {
4575         case ISCSI_BOOT_TGT_NAME:
4576                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
4577                 break;
4578         case ISCSI_BOOT_TGT_IP_ADDR:
4579                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
4580                         rc = sprintf(buf, "%pI4\n",
4581                                      &boot_conn->dest_ipaddr.ip_address);
4582                 else
4583                         rc = sprintf(str, "%pI6\n",
4584                                      &boot_conn->dest_ipaddr.ip_address);
4585                 break;
4586         case ISCSI_BOOT_TGT_PORT:
4587                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
4588                 break;
4589         case ISCSI_BOOT_TGT_CHAP_NAME:
4590                 rc = sprintf(str,  "%.*s\n",
4591                              boot_conn->chap.target_chap_name_length,
4592                              (char *)&boot_conn->chap.target_chap_name);
4593                 break;
4594         case ISCSI_BOOT_TGT_CHAP_SECRET:
4595                 rc = sprintf(str,  "%.*s\n",
4596                              boot_conn->chap.target_secret_length,
4597                              (char *)&boot_conn->chap.target_secret);
4598                 break;
4599         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4600                 rc = sprintf(str,  "%.*s\n",
4601                              boot_conn->chap.intr_chap_name_length,
4602                              (char *)&boot_conn->chap.intr_chap_name);
4603                 break;
4604         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4605                 rc = sprintf(str,  "%.*s\n",
4606                              boot_conn->chap.intr_secret_length,
4607                              (char *)&boot_conn->chap.intr_secret);
4608                 break;
4609         case ISCSI_BOOT_TGT_FLAGS:
4610                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
4611                 break;
4612         case ISCSI_BOOT_TGT_NIC_ASSOC:
4613                 rc = sprintf(str, "0\n");
4614                 break;
4615         default:
4616                 rc = -ENOSYS;
4617                 break;
4618         }
4619         return rc;
4620 }
4621
4622 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
4623 {
4624         struct scsi_qla_host *ha = data;
4625         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
4626
4627         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
4628 }
4629
4630 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
4631 {
4632         struct scsi_qla_host *ha = data;
4633         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
4634
4635         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
4636 }
4637
4638 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
4639 {
4640         int rc;
4641
4642         switch (type) {
4643         case ISCSI_BOOT_TGT_NAME:
4644         case ISCSI_BOOT_TGT_IP_ADDR:
4645         case ISCSI_BOOT_TGT_PORT:
4646         case ISCSI_BOOT_TGT_CHAP_NAME:
4647         case ISCSI_BOOT_TGT_CHAP_SECRET:
4648         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4649         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4650         case ISCSI_BOOT_TGT_NIC_ASSOC:
4651         case ISCSI_BOOT_TGT_FLAGS:
4652                 rc = S_IRUGO;
4653                 break;
4654         default:
4655                 rc = 0;
4656                 break;
4657         }
4658         return rc;
4659 }
4660
4661 static void qla4xxx_boot_release(void *data)
4662 {
4663         struct scsi_qla_host *ha = data;
4664
4665         scsi_host_put(ha->host);
4666 }
4667
4668 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
4669 {
4670         dma_addr_t buf_dma;
4671         uint32_t addr, pri_addr, sec_addr;
4672         uint32_t offset;
4673         uint16_t func_num;
4674         uint8_t val;
4675         uint8_t *buf = NULL;
4676         size_t size = 13 * sizeof(uint8_t);
4677         int ret = QLA_SUCCESS;
4678
4679         func_num = PCI_FUNC(ha->pdev->devfn);
4680
4681         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
4682                    __func__, ha->pdev->device, func_num);
4683
4684         if (is_qla40XX(ha)) {
4685                 if (func_num == 1) {
4686                         addr = NVRAM_PORT0_BOOT_MODE;
4687                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
4688                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
4689                 } else if (func_num == 3) {
4690                         addr = NVRAM_PORT1_BOOT_MODE;
4691                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
4692                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
4693                 } else {
4694                         ret = QLA_ERROR;
4695                         goto exit_boot_info;
4696                 }
4697
4698                 /* Check Boot Mode */
4699                 val = rd_nvram_byte(ha, addr);
4700                 if (!(val & 0x07)) {
4701                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
4702                                           "options : 0x%x\n", __func__, val));
4703                         ret = QLA_ERROR;
4704                         goto exit_boot_info;
4705                 }
4706
4707                 /* get primary valid target index */
4708                 val = rd_nvram_byte(ha, pri_addr);
4709                 if (val & BIT_7)
4710                         ddb_index[0] = (val & 0x7f);
4711
4712                 /* get secondary valid target index */
4713                 val = rd_nvram_byte(ha, sec_addr);
4714                 if (val & BIT_7)
4715                         ddb_index[1] = (val & 0x7f);
4716
4717         } else if (is_qla80XX(ha)) {
4718                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
4719                                          &buf_dma, GFP_KERNEL);
4720                 if (!buf) {
4721                         DEBUG2(ql4_printk(KERN_ERR, ha,
4722                                           "%s: Unable to allocate dma buffer\n",
4723                                            __func__));
4724                         ret = QLA_ERROR;
4725                         goto exit_boot_info;
4726                 }
4727
4728                 if (ha->port_num == 0)
4729                         offset = BOOT_PARAM_OFFSET_PORT0;
4730                 else if (ha->port_num == 1)
4731                         offset = BOOT_PARAM_OFFSET_PORT1;
4732                 else {
4733                         ret = QLA_ERROR;
4734                         goto exit_boot_info_free;
4735                 }
4736                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
4737                        offset;
4738                 if (qla4xxx_get_flash(ha, buf_dma, addr,
4739                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
4740                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
4741                                           " failed\n", ha->host_no, __func__));
4742                         ret = QLA_ERROR;
4743                         goto exit_boot_info_free;
4744                 }
4745                 /* Check Boot Mode */
4746                 if (!(buf[1] & 0x07)) {
4747                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
4748                                           " : 0x%x\n", buf[1]));
4749                         ret = QLA_ERROR;
4750                         goto exit_boot_info_free;
4751                 }
4752
4753                 /* get primary valid target index */
4754                 if (buf[2] & BIT_7)
4755                         ddb_index[0] = buf[2] & 0x7f;
4756
4757                 /* get secondary valid target index */
4758                 if (buf[11] & BIT_7)
4759                         ddb_index[1] = buf[11] & 0x7f;
4760         } else {
4761                 ret = QLA_ERROR;
4762                 goto exit_boot_info;
4763         }
4764
4765         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
4766                           " target ID %d\n", __func__, ddb_index[0],
4767                           ddb_index[1]));
4768
4769 exit_boot_info_free:
4770         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
4771 exit_boot_info:
4772         ha->pri_ddb_idx = ddb_index[0];
4773         ha->sec_ddb_idx = ddb_index[1];
4774         return ret;
4775 }
4776
4777 /**
4778  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
4779  * @ha: pointer to adapter structure
4780  * @username: CHAP username to be returned
4781  * @password: CHAP password to be returned
4782  *
4783  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
4784  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
4785  * So from the CHAP cache find the first BIDI CHAP entry and set it
4786  * to the boot record in sysfs.
4787  **/
4788 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
4789                             char *password)
4790 {
4791         int i, ret = -EINVAL;
4792         int max_chap_entries = 0;
4793         struct ql4_chap_table *chap_table;
4794
4795         if (is_qla80XX(ha))
4796                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
4797                                                 sizeof(struct ql4_chap_table);
4798         else
4799                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
4800
4801         if (!ha->chap_list) {
4802                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
4803                 return ret;
4804         }
4805
4806         mutex_lock(&ha->chap_sem);
4807         for (i = 0; i < max_chap_entries; i++) {
4808                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
4809                 if (chap_table->cookie !=
4810                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
4811                         continue;
4812                 }
4813
4814                 if (chap_table->flags & BIT_7) /* local */
4815                         continue;
4816
4817                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
4818                         continue;
4819
4820                 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
4821                 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
4822                 ret = 0;
4823                 break;
4824         }
4825         mutex_unlock(&ha->chap_sem);
4826
4827         return ret;
4828 }
4829
4830
4831 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
4832                                    struct ql4_boot_session_info *boot_sess,
4833                                    uint16_t ddb_index)
4834 {
4835         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4836         struct dev_db_entry *fw_ddb_entry;
4837         dma_addr_t fw_ddb_entry_dma;
4838         uint16_t idx;
4839         uint16_t options;
4840         int ret = QLA_SUCCESS;
4841
4842         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4843                                           &fw_ddb_entry_dma, GFP_KERNEL);
4844         if (!fw_ddb_entry) {
4845                 DEBUG2(ql4_printk(KERN_ERR, ha,
4846                                   "%s: Unable to allocate dma buffer.\n",
4847                                   __func__));
4848                 ret = QLA_ERROR;
4849                 return ret;
4850         }
4851
4852         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
4853                                    fw_ddb_entry_dma, ddb_index)) {
4854                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
4855                                   "index [%d]\n", __func__, ddb_index));
4856                 ret = QLA_ERROR;
4857                 goto exit_boot_target;
4858         }
4859
4860         /* Update target name and IP from DDB */
4861         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
4862                min(sizeof(boot_sess->target_name),
4863                    sizeof(fw_ddb_entry->iscsi_name)));
4864
4865         options = le16_to_cpu(fw_ddb_entry->options);
4866         if (options & DDB_OPT_IPV6_DEVICE) {
4867                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4868                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
4869         } else {
4870                 boot_conn->dest_ipaddr.ip_type = 0x1;
4871                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4872                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
4873         }
4874
4875         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
4876
4877         /* update chap information */
4878         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4879
4880         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
4881
4882                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
4883
4884                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
4885                                        target_chap_name,
4886                                        (char *)&boot_conn->chap.target_secret,
4887                                        idx);
4888                 if (ret) {
4889                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
4890                         ret = QLA_ERROR;
4891                         goto exit_boot_target;
4892                 }
4893
4894                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4895                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4896         }
4897
4898         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4899
4900                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
4901
4902                 ret = qla4xxx_get_bidi_chap(ha,
4903                                     (char *)&boot_conn->chap.intr_chap_name,
4904                                     (char *)&boot_conn->chap.intr_secret);
4905
4906                 if (ret) {
4907                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
4908                         ret = QLA_ERROR;
4909                         goto exit_boot_target;
4910                 }
4911
4912                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4913                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4914         }
4915
4916 exit_boot_target:
4917         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4918                           fw_ddb_entry, fw_ddb_entry_dma);
4919         return ret;
4920 }
4921
4922 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
4923 {
4924         uint16_t ddb_index[2];
4925         int ret = QLA_ERROR;
4926         int rval;
4927
4928         memset(ddb_index, 0, sizeof(ddb_index));
4929         ddb_index[0] = 0xffff;
4930         ddb_index[1] = 0xffff;
4931         ret = get_fw_boot_info(ha, ddb_index);
4932         if (ret != QLA_SUCCESS) {
4933                 DEBUG2(ql4_printk(KERN_INFO, ha,
4934                                 "%s: No boot target configured.\n", __func__));
4935                 return ret;
4936         }
4937
4938         if (ql4xdisablesysfsboot)
4939                 return QLA_SUCCESS;
4940
4941         if (ddb_index[0] == 0xffff)
4942                 goto sec_target;
4943
4944         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
4945                                       ddb_index[0]);
4946         if (rval != QLA_SUCCESS) {
4947                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
4948                                   "configured\n", __func__));
4949         } else
4950                 ret = QLA_SUCCESS;
4951
4952 sec_target:
4953         if (ddb_index[1] == 0xffff)
4954                 goto exit_get_boot_info;
4955
4956         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
4957                                       ddb_index[1]);
4958         if (rval != QLA_SUCCESS) {
4959                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
4960                                   " configured\n", __func__));
4961         } else
4962                 ret = QLA_SUCCESS;
4963
4964 exit_get_boot_info:
4965         return ret;
4966 }
4967
4968 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
4969 {
4970         struct iscsi_boot_kobj *boot_kobj;
4971
4972         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
4973                 return QLA_ERROR;
4974
4975         if (ql4xdisablesysfsboot) {
4976                 ql4_printk(KERN_INFO, ha,
4977                            "%s: syfsboot disabled - driver will trigger login "
4978                            "and publish session for discovery .\n", __func__);
4979                 return QLA_SUCCESS;
4980         }
4981
4982
4983         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
4984         if (!ha->boot_kset)
4985                 goto kset_free;
4986
4987         if (!scsi_host_get(ha->host))
4988                 goto kset_free;
4989         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
4990                                              qla4xxx_show_boot_tgt_pri_info,
4991                                              qla4xxx_tgt_get_attr_visibility,
4992                                              qla4xxx_boot_release);
4993         if (!boot_kobj)
4994                 goto put_host;
4995
4996         if (!scsi_host_get(ha->host))
4997                 goto kset_free;
4998         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
4999                                              qla4xxx_show_boot_tgt_sec_info,
5000                                              qla4xxx_tgt_get_attr_visibility,
5001                                              qla4xxx_boot_release);
5002         if (!boot_kobj)
5003                 goto put_host;
5004
5005         if (!scsi_host_get(ha->host))
5006                 goto kset_free;
5007         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
5008                                                qla4xxx_show_boot_ini_info,
5009                                                qla4xxx_ini_get_attr_visibility,
5010                                                qla4xxx_boot_release);
5011         if (!boot_kobj)
5012                 goto put_host;
5013
5014         if (!scsi_host_get(ha->host))
5015                 goto kset_free;
5016         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
5017                                                qla4xxx_show_boot_eth_info,
5018                                                qla4xxx_eth_get_attr_visibility,
5019                                                qla4xxx_boot_release);
5020         if (!boot_kobj)
5021                 goto put_host;
5022
5023         return QLA_SUCCESS;
5024
5025 put_host:
5026         scsi_host_put(ha->host);
5027 kset_free:
5028         iscsi_boot_destroy_kset(ha->boot_kset);
5029         return -ENOMEM;
5030 }
5031
5032
5033 /**
5034  * qla4xxx_create chap_list - Create CHAP list from FLASH
5035  * @ha: pointer to adapter structure
5036  *
5037  * Read flash and make a list of CHAP entries, during login when a CHAP entry
5038  * is received, it will be checked in this list. If entry exist then the CHAP
5039  * entry index is set in the DDB. If CHAP entry does not exist in this list
5040  * then a new entry is added in FLASH in CHAP table and the index obtained is
5041  * used in the DDB.
5042  **/
5043 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
5044 {
5045         int rval = 0;
5046         uint8_t *chap_flash_data = NULL;
5047         uint32_t offset;
5048         dma_addr_t chap_dma;
5049         uint32_t chap_size = 0;
5050
5051         if (is_qla40XX(ha))
5052                 chap_size = MAX_CHAP_ENTRIES_40XX  *
5053                                         sizeof(struct ql4_chap_table);
5054         else    /* Single region contains CHAP info for both
5055                  * ports which is divided into half for each port.
5056                  */
5057                 chap_size = ha->hw.flt_chap_size / 2;
5058
5059         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
5060                                           &chap_dma, GFP_KERNEL);
5061         if (!chap_flash_data) {
5062                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
5063                 return;
5064         }
5065         if (is_qla40XX(ha))
5066                 offset = FLASH_CHAP_OFFSET;
5067         else {
5068                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
5069                 if (ha->port_num == 1)
5070                         offset += chap_size;
5071         }
5072
5073         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
5074         if (rval != QLA_SUCCESS)
5075                 goto exit_chap_list;
5076
5077         if (ha->chap_list == NULL)
5078                 ha->chap_list = vmalloc(chap_size);
5079         if (ha->chap_list == NULL) {
5080                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
5081                 goto exit_chap_list;
5082         }
5083
5084         memcpy(ha->chap_list, chap_flash_data, chap_size);
5085
5086 exit_chap_list:
5087         dma_free_coherent(&ha->pdev->dev, chap_size,
5088                         chap_flash_data, chap_dma);
5089 }
5090
5091 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
5092                                   struct ql4_tuple_ddb *tddb)
5093 {
5094         struct scsi_qla_host *ha;
5095         struct iscsi_cls_session *cls_sess;
5096         struct iscsi_cls_conn *cls_conn;
5097         struct iscsi_session *sess;
5098         struct iscsi_conn *conn;
5099
5100         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
5101         ha = ddb_entry->ha;
5102         cls_sess = ddb_entry->sess;
5103         sess = cls_sess->dd_data;
5104         cls_conn = ddb_entry->conn;
5105         conn = cls_conn->dd_data;
5106
5107         tddb->tpgt = sess->tpgt;
5108         tddb->port = conn->persistent_port;
5109         strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
5110         strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
5111 }
5112
5113 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
5114                                       struct ql4_tuple_ddb *tddb,
5115                                       uint8_t *flash_isid)
5116 {
5117         uint16_t options = 0;
5118
5119         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
5120         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
5121                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
5122
5123         options = le16_to_cpu(fw_ddb_entry->options);
5124         if (options & DDB_OPT_IPV6_DEVICE)
5125                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
5126         else
5127                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
5128
5129         tddb->port = le16_to_cpu(fw_ddb_entry->port);
5130
5131         if (flash_isid == NULL)
5132                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
5133                        sizeof(tddb->isid));
5134         else
5135                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
5136 }
5137
5138 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
5139                                      struct ql4_tuple_ddb *old_tddb,
5140                                      struct ql4_tuple_ddb *new_tddb,
5141                                      uint8_t is_isid_compare)
5142 {
5143         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
5144                 return QLA_ERROR;
5145
5146         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
5147                 return QLA_ERROR;
5148
5149         if (old_tddb->port != new_tddb->port)
5150                 return QLA_ERROR;
5151
5152         /* For multi sessions, driver generates the ISID, so do not compare
5153          * ISID in reset path since it would be a comparison between the
5154          * driver generated ISID and firmware generated ISID. This could
5155          * lead to adding duplicated DDBs in the list as driver generated
5156          * ISID would not match firmware generated ISID.
5157          */
5158         if (is_isid_compare) {
5159                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
5160                         "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
5161                         __func__, old_tddb->isid[5], old_tddb->isid[4],
5162                         old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
5163                         old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
5164                         new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
5165                         new_tddb->isid[0]));
5166
5167                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
5168                            sizeof(old_tddb->isid)))
5169                         return QLA_ERROR;
5170         }
5171
5172         DEBUG2(ql4_printk(KERN_INFO, ha,
5173                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
5174                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
5175                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
5176                           new_tddb->ip_addr, new_tddb->iscsi_name));
5177
5178         return QLA_SUCCESS;
5179 }
5180
5181 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
5182                                      struct dev_db_entry *fw_ddb_entry,
5183                                      uint32_t *index)
5184 {
5185         struct ddb_entry *ddb_entry;
5186         struct ql4_tuple_ddb *fw_tddb = NULL;
5187         struct ql4_tuple_ddb *tmp_tddb = NULL;
5188         int idx;
5189         int ret = QLA_ERROR;
5190
5191         fw_tddb = vzalloc(sizeof(*fw_tddb));
5192         if (!fw_tddb) {
5193                 DEBUG2(ql4_printk(KERN_WARNING, ha,
5194                                   "Memory Allocation failed.\n"));
5195                 ret = QLA_SUCCESS;
5196                 goto exit_check;
5197         }
5198
5199         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
5200         if (!tmp_tddb) {
5201                 DEBUG2(ql4_printk(KERN_WARNING, ha,
5202                                   "Memory Allocation failed.\n"));
5203                 ret = QLA_SUCCESS;
5204                 goto exit_check;
5205         }
5206
5207         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
5208
5209         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
5210                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
5211                 if (ddb_entry == NULL)
5212                         continue;
5213
5214                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
5215                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
5216                         ret = QLA_SUCCESS; /* found */
5217                         if (index != NULL)
5218                                 *index = idx;
5219                         goto exit_check;
5220                 }
5221         }
5222
5223 exit_check:
5224         if (fw_tddb)
5225                 vfree(fw_tddb);
5226         if (tmp_tddb)
5227                 vfree(tmp_tddb);
5228         return ret;
5229 }
5230
5231 /**
5232  * qla4xxx_check_existing_isid - check if target with same isid exist
5233  *                               in target list
5234  * @list_nt: list of target
5235  * @isid: isid to check
5236  *
5237  * This routine return QLA_SUCCESS if target with same isid exist
5238  **/
5239 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
5240 {
5241         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
5242         struct dev_db_entry *fw_ddb_entry;
5243
5244         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
5245                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
5246
5247                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
5248                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
5249                         return QLA_SUCCESS;
5250                 }
5251         }
5252         return QLA_ERROR;
5253 }
5254
5255 /**
5256  * qla4xxx_update_isid - compare ddbs and updated isid
5257  * @ha: Pointer to host adapter structure.
5258  * @list_nt: list of nt target
5259  * @fw_ddb_entry: firmware ddb entry
5260  *
5261  * This routine update isid if ddbs have same iqn, same isid and
5262  * different IP addr.
5263  * Return QLA_SUCCESS if isid is updated.
5264  **/
5265 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
5266                                struct list_head *list_nt,
5267                                struct dev_db_entry *fw_ddb_entry)
5268 {
5269         uint8_t base_value, i;
5270
5271         base_value = fw_ddb_entry->isid[1] & 0x1f;
5272         for (i = 0; i < 8; i++) {
5273                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
5274                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
5275                         break;
5276         }
5277
5278         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
5279                 return QLA_ERROR;
5280
5281         return QLA_SUCCESS;
5282 }
5283
5284 /**
5285  * qla4xxx_should_update_isid - check if isid need to update
5286  * @ha: Pointer to host adapter structure.
5287  * @old_tddb: ddb tuple
5288  * @new_tddb: ddb tuple
5289  *
5290  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
5291  * same isid
5292  **/
5293 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
5294                                       struct ql4_tuple_ddb *old_tddb,
5295                                       struct ql4_tuple_ddb *new_tddb)
5296 {
5297         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
5298                 /* Same ip */
5299                 if (old_tddb->port == new_tddb->port)
5300                         return QLA_ERROR;
5301         }
5302
5303         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
5304                 /* different iqn */
5305                 return QLA_ERROR;
5306
5307         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
5308                    sizeof(old_tddb->isid)))
5309                 /* different isid */
5310                 return QLA_ERROR;
5311
5312         return QLA_SUCCESS;
5313 }
5314
5315 /**
5316  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
5317  * @ha: Pointer to host adapter structure.
5318  * @list_nt: list of nt target.
5319  * @fw_ddb_entry: firmware ddb entry.
5320  *
5321  * This routine check if fw_ddb_entry already exists in list_nt to avoid
5322  * duplicate ddb in list_nt.
5323  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
5324  * Note: This function also update isid of DDB if required.
5325  **/
5326
5327 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
5328                                        struct list_head *list_nt,
5329                                        struct dev_db_entry *fw_ddb_entry)
5330 {
5331         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
5332         struct ql4_tuple_ddb *fw_tddb = NULL;
5333         struct ql4_tuple_ddb *tmp_tddb = NULL;
5334         int rval, ret = QLA_ERROR;
5335
5336         fw_tddb = vzalloc(sizeof(*fw_tddb));
5337         if (!fw_tddb) {
5338                 DEBUG2(ql4_printk(KERN_WARNING, ha,
5339                                   "Memory Allocation failed.\n"));
5340                 ret = QLA_SUCCESS;
5341                 goto exit_check;
5342         }
5343
5344         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
5345         if (!tmp_tddb) {
5346                 DEBUG2(ql4_printk(KERN_WARNING, ha,
5347                                   "Memory Allocation failed.\n"));
5348                 ret = QLA_SUCCESS;
5349                 goto exit_check;
5350         }
5351
5352         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
5353
5354         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
5355                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
5356                                           nt_ddb_idx->flash_isid);
5357                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
5358                 /* found duplicate ddb */
5359                 if (ret == QLA_SUCCESS)
5360                         goto exit_check;
5361         }
5362
5363         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
5364                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
5365
5366                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
5367                 if (ret == QLA_SUCCESS) {
5368                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
5369                         if (rval == QLA_SUCCESS)
5370                                 ret = QLA_ERROR;
5371                         else
5372                                 ret = QLA_SUCCESS;
5373
5374                         goto exit_check;
5375                 }
5376         }
5377
5378 exit_check:
5379         if (fw_tddb)
5380                 vfree(fw_tddb);
5381         if (tmp_tddb)
5382                 vfree(tmp_tddb);
5383         return ret;
5384 }
5385
5386 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
5387 {
5388         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
5389
5390         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
5391                 list_del_init(&ddb_idx->list);
5392                 vfree(ddb_idx);
5393         }
5394 }
5395
5396 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
5397                                         struct dev_db_entry *fw_ddb_entry)
5398 {
5399         struct iscsi_endpoint *ep;
5400         struct sockaddr_in *addr;
5401         struct sockaddr_in6 *addr6;
5402         struct sockaddr *t_addr;
5403         struct sockaddr_storage *dst_addr;
5404         char *ip;
5405
5406         /* TODO: need to destroy on unload iscsi_endpoint*/
5407         dst_addr = vmalloc(sizeof(*dst_addr));
5408         if (!dst_addr)
5409                 return NULL;
5410
5411         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
5412                 t_addr = (struct sockaddr *)dst_addr;
5413                 t_addr->sa_family = AF_INET6;
5414                 addr6 = (struct sockaddr_in6 *)dst_addr;
5415                 ip = (char *)&addr6->sin6_addr;
5416                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
5417                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
5418
5419         } else {
5420                 t_addr = (struct sockaddr *)dst_addr;
5421                 t_addr->sa_family = AF_INET;
5422                 addr = (struct sockaddr_in *)dst_addr;
5423                 ip = (char *)&addr->sin_addr;
5424                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
5425                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
5426         }
5427
5428         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
5429         vfree(dst_addr);
5430         return ep;
5431 }
5432
5433 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
5434 {
5435         if (ql4xdisablesysfsboot)
5436                 return QLA_SUCCESS;
5437         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
5438                 return QLA_ERROR;
5439         return QLA_SUCCESS;
5440 }
5441
5442 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
5443                                           struct ddb_entry *ddb_entry,
5444                                           uint16_t idx)
5445 {
5446         uint16_t def_timeout;
5447
5448         ddb_entry->ddb_type = FLASH_DDB;
5449         ddb_entry->fw_ddb_index = INVALID_ENTRY;
5450         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
5451         ddb_entry->ha = ha;
5452         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
5453         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
5454         ddb_entry->chap_tbl_idx = INVALID_ENTRY;
5455
5456         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
5457         atomic_set(&ddb_entry->relogin_timer, 0);
5458         atomic_set(&ddb_entry->relogin_retry_count, 0);
5459         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
5460         ddb_entry->default_relogin_timeout =
5461                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
5462                 def_timeout : LOGIN_TOV;
5463         ddb_entry->default_time2wait =
5464                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
5465
5466         if (ql4xdisablesysfsboot &&
5467             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
5468                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
5469 }
5470
5471 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
5472 {
5473         uint32_t idx = 0;
5474         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
5475         uint32_t sts[MBOX_REG_COUNT];
5476         uint32_t ip_state;
5477         unsigned long wtime;
5478         int ret;
5479
5480         wtime = jiffies + (HZ * IP_CONFIG_TOV);
5481         do {
5482                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
5483                         if (ip_idx[idx] == -1)
5484                                 continue;
5485
5486                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
5487
5488                         if (ret == QLA_ERROR) {
5489                                 ip_idx[idx] = -1;
5490                                 continue;
5491                         }
5492
5493                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
5494
5495                         DEBUG2(ql4_printk(KERN_INFO, ha,
5496                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
5497                                           ip_idx[idx], ip_state));
5498                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
5499                             ip_state == IP_ADDRSTATE_INVALID ||
5500                             ip_state == IP_ADDRSTATE_PREFERRED ||
5501                             ip_state == IP_ADDRSTATE_DEPRICATED ||
5502                             ip_state == IP_ADDRSTATE_DISABLING)
5503                                 ip_idx[idx] = -1;
5504                 }
5505
5506                 /* Break if all IP states checked */
5507                 if ((ip_idx[0] == -1) &&
5508                     (ip_idx[1] == -1) &&
5509                     (ip_idx[2] == -1) &&
5510                     (ip_idx[3] == -1))
5511                         break;
5512                 schedule_timeout_uninterruptible(HZ);
5513         } while (time_after(wtime, jiffies));
5514 }
5515
5516 static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
5517                                   struct dev_db_entry *flash_ddb_entry)
5518 {
5519         uint16_t options = 0;
5520         size_t ip_len = IP_ADDR_LEN;
5521
5522         options = le16_to_cpu(fw_ddb_entry->options);
5523         if (options & DDB_OPT_IPV6_DEVICE)
5524                 ip_len = IPv6_ADDR_LEN;
5525
5526         if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
5527                 return QLA_ERROR;
5528
5529         if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
5530                    sizeof(fw_ddb_entry->isid)))
5531                 return QLA_ERROR;
5532
5533         if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
5534                    sizeof(fw_ddb_entry->port)))
5535                 return QLA_ERROR;
5536
5537         return QLA_SUCCESS;
5538 }
5539
5540 static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
5541                                      struct dev_db_entry *fw_ddb_entry,
5542                                      uint32_t fw_idx, uint32_t *flash_index)
5543 {
5544         struct dev_db_entry *flash_ddb_entry;
5545         dma_addr_t flash_ddb_entry_dma;
5546         uint32_t idx = 0;
5547         int max_ddbs;
5548         int ret = QLA_ERROR, status;
5549
5550         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5551                                      MAX_DEV_DB_ENTRIES;
5552
5553         flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5554                                          &flash_ddb_entry_dma);
5555         if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
5556                 ql4_printk(KERN_ERR, ha, "Out of memory\n");
5557                 goto exit_find_st_idx;
5558         }
5559
5560         status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
5561                                           flash_ddb_entry_dma, fw_idx);
5562         if (status == QLA_SUCCESS) {
5563                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
5564                 if (status == QLA_SUCCESS) {
5565                         *flash_index = fw_idx;
5566                         ret = QLA_SUCCESS;
5567                         goto exit_find_st_idx;
5568                 }
5569         }
5570
5571         for (idx = 0; idx < max_ddbs; idx++) {
5572                 status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
5573                                                   flash_ddb_entry_dma, idx);
5574                 if (status == QLA_ERROR)
5575                         continue;
5576
5577                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
5578                 if (status == QLA_SUCCESS) {
5579                         *flash_index = idx;
5580                         ret = QLA_SUCCESS;
5581                         goto exit_find_st_idx;
5582                 }
5583         }
5584
5585         if (idx == max_ddbs)
5586                 ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
5587                            fw_idx);
5588
5589 exit_find_st_idx:
5590         if (flash_ddb_entry)
5591                 dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
5592                               flash_ddb_entry_dma);
5593
5594         return ret;
5595 }
5596
5597 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
5598                                   struct list_head *list_st)
5599 {
5600         struct qla_ddb_index  *st_ddb_idx;
5601         int max_ddbs;
5602         int fw_idx_size;
5603         struct dev_db_entry *fw_ddb_entry;
5604         dma_addr_t fw_ddb_dma;
5605         int ret;
5606         uint32_t idx = 0, next_idx = 0;
5607         uint32_t state = 0, conn_err = 0;
5608         uint32_t flash_index = -1;
5609         uint16_t conn_id = 0;
5610
5611         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5612                                       &fw_ddb_dma);
5613         if (fw_ddb_entry == NULL) {
5614                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5615                 goto exit_st_list;
5616         }
5617
5618         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5619                                      MAX_DEV_DB_ENTRIES;
5620         fw_idx_size = sizeof(struct qla_ddb_index);
5621
5622         for (idx = 0; idx < max_ddbs; idx = next_idx) {
5623                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5624                                               NULL, &next_idx, &state,
5625                                               &conn_err, NULL, &conn_id);
5626                 if (ret == QLA_ERROR)
5627                         break;
5628
5629                 /* Ignore DDB if invalid state (unassigned) */
5630                 if (state == DDB_DS_UNASSIGNED)
5631                         goto continue_next_st;
5632
5633                 /* Check if ST, add to the list_st */
5634                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
5635                         goto continue_next_st;
5636
5637                 st_ddb_idx = vzalloc(fw_idx_size);
5638                 if (!st_ddb_idx)
5639                         break;
5640
5641                 ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
5642                                                 &flash_index);
5643                 if (ret == QLA_ERROR) {
5644                         ql4_printk(KERN_ERR, ha,
5645                                    "No flash entry for ST at idx [%d]\n", idx);
5646                         st_ddb_idx->flash_ddb_idx = idx;
5647                 } else {
5648                         ql4_printk(KERN_INFO, ha,
5649                                    "ST at idx [%d] is stored at flash [%d]\n",
5650                                    idx, flash_index);
5651                         st_ddb_idx->flash_ddb_idx = flash_index;
5652                 }
5653
5654                 st_ddb_idx->fw_ddb_idx = idx;
5655
5656                 list_add_tail(&st_ddb_idx->list, list_st);
5657 continue_next_st:
5658                 if (next_idx == 0)
5659                         break;
5660         }
5661
5662 exit_st_list:
5663         if (fw_ddb_entry)
5664                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5665 }
5666
5667 /**
5668  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
5669  * @ha: pointer to adapter structure
5670  * @list_ddb: List from which failed ddb to be removed
5671  *
5672  * Iterate over the list of DDBs and find and remove DDBs that are either in
5673  * no connection active state or failed state
5674  **/
5675 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
5676                                       struct list_head *list_ddb)
5677 {
5678         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
5679         uint32_t next_idx = 0;
5680         uint32_t state = 0, conn_err = 0;
5681         int ret;
5682
5683         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
5684                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
5685                                               NULL, 0, NULL, &next_idx, &state,
5686                                               &conn_err, NULL, NULL);
5687                 if (ret == QLA_ERROR)
5688                         continue;
5689
5690                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
5691                     state == DDB_DS_SESSION_FAILED) {
5692                         list_del_init(&ddb_idx->list);
5693                         vfree(ddb_idx);
5694                 }
5695         }
5696 }
5697
5698 static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
5699                                          struct ddb_entry *ddb_entry,
5700                                          struct dev_db_entry *fw_ddb_entry)
5701 {
5702         struct iscsi_cls_session *cls_sess;
5703         struct iscsi_session *sess;
5704         uint32_t max_ddbs = 0;
5705         uint16_t ddb_link = -1;
5706
5707         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5708                                      MAX_DEV_DB_ENTRIES;
5709
5710         cls_sess = ddb_entry->sess;
5711         sess = cls_sess->dd_data;
5712
5713         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
5714         if (ddb_link < max_ddbs)
5715                 sess->discovery_parent_idx = ddb_link;
5716         else
5717                 sess->discovery_parent_idx = DDB_NO_LINK;
5718 }
5719
5720 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
5721                                    struct dev_db_entry *fw_ddb_entry,
5722                                    int is_reset, uint16_t idx)
5723 {
5724         struct iscsi_cls_session *cls_sess;
5725         struct iscsi_session *sess;
5726         struct iscsi_cls_conn *cls_conn;
5727         struct iscsi_endpoint *ep;
5728         uint16_t cmds_max = 32;
5729         uint16_t conn_id = 0;
5730         uint32_t initial_cmdsn = 0;
5731         int ret = QLA_SUCCESS;
5732
5733         struct ddb_entry *ddb_entry = NULL;
5734
5735         /* Create session object, with INVALID_ENTRY,
5736          * the targer_id would get set when we issue the login
5737          */
5738         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
5739                                        cmds_max, sizeof(struct ddb_entry),
5740                                        sizeof(struct ql4_task_data),
5741                                        initial_cmdsn, INVALID_ENTRY);
5742         if (!cls_sess) {
5743                 ret = QLA_ERROR;
5744                 goto exit_setup;
5745         }
5746
5747         /*
5748          * so calling module_put function to decrement the
5749          * reference count.
5750          **/
5751         module_put(qla4xxx_iscsi_transport.owner);
5752         sess = cls_sess->dd_data;
5753         ddb_entry = sess->dd_data;
5754         ddb_entry->sess = cls_sess;
5755
5756         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
5757         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
5758                sizeof(struct dev_db_entry));
5759
5760         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
5761
5762         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
5763
5764         if (!cls_conn) {
5765                 ret = QLA_ERROR;
5766                 goto exit_setup;
5767         }
5768
5769         ddb_entry->conn = cls_conn;
5770
5771         /* Setup ep, for displaying attributes in sysfs */
5772         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
5773         if (ep) {
5774                 ep->conn = cls_conn;
5775                 cls_conn->ep = ep;
5776         } else {
5777                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
5778                 ret = QLA_ERROR;
5779                 goto exit_setup;
5780         }
5781
5782         /* Update sess/conn params */
5783         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
5784         qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
5785
5786         if (is_reset == RESET_ADAPTER) {
5787                 iscsi_block_session(cls_sess);
5788                 /* Use the relogin path to discover new devices
5789                  *  by short-circuting the logic of setting
5790                  *  timer to relogin - instead set the flags
5791                  *  to initiate login right away.
5792                  */
5793                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
5794                 set_bit(DF_RELOGIN, &ddb_entry->flags);
5795         }
5796
5797 exit_setup:
5798         return ret;
5799 }
5800
5801 static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
5802                                        struct list_head *list_ddb,
5803                                        struct dev_db_entry *fw_ddb_entry)
5804 {
5805         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
5806         uint16_t ddb_link;
5807
5808         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
5809
5810         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
5811                 if (ddb_idx->fw_ddb_idx == ddb_link) {
5812                         DEBUG2(ql4_printk(KERN_INFO, ha,
5813                                           "Updating NT parent idx from [%d] to [%d]\n",
5814                                           ddb_link, ddb_idx->flash_ddb_idx));
5815                         fw_ddb_entry->ddb_link =
5816                                             cpu_to_le16(ddb_idx->flash_ddb_idx);
5817                         return;
5818                 }
5819         }
5820 }
5821
5822 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
5823                                   struct list_head *list_nt,
5824                                   struct list_head *list_st,
5825                                   int is_reset)
5826 {
5827         struct dev_db_entry *fw_ddb_entry;
5828         struct ddb_entry *ddb_entry = NULL;
5829         dma_addr_t fw_ddb_dma;
5830         int max_ddbs;
5831         int fw_idx_size;
5832         int ret;
5833         uint32_t idx = 0, next_idx = 0;
5834         uint32_t state = 0, conn_err = 0;
5835         uint32_t ddb_idx = -1;
5836         uint16_t conn_id = 0;
5837         uint16_t ddb_link = -1;
5838         struct qla_ddb_index  *nt_ddb_idx;
5839
5840         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5841                                       &fw_ddb_dma);
5842         if (fw_ddb_entry == NULL) {
5843                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5844                 goto exit_nt_list;
5845         }
5846         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5847                                      MAX_DEV_DB_ENTRIES;
5848         fw_idx_size = sizeof(struct qla_ddb_index);
5849
5850         for (idx = 0; idx < max_ddbs; idx = next_idx) {
5851                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5852                                               NULL, &next_idx, &state,
5853                                               &conn_err, NULL, &conn_id);
5854                 if (ret == QLA_ERROR)
5855                         break;
5856
5857                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
5858                         goto continue_next_nt;
5859
5860                 /* Check if NT, then add to list it */
5861                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
5862                         goto continue_next_nt;
5863
5864                 ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
5865                 if (ddb_link < max_ddbs)
5866                         qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);
5867
5868                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
5869                     state == DDB_DS_SESSION_FAILED) &&
5870                     (is_reset == INIT_ADAPTER))
5871                         goto continue_next_nt;
5872
5873                 DEBUG2(ql4_printk(KERN_INFO, ha,
5874                                   "Adding  DDB to session = 0x%x\n", idx));
5875
5876                 if (is_reset == INIT_ADAPTER) {
5877                         nt_ddb_idx = vmalloc(fw_idx_size);
5878                         if (!nt_ddb_idx)
5879                                 break;
5880
5881                         nt_ddb_idx->fw_ddb_idx = idx;
5882
5883                         /* Copy original isid as it may get updated in function
5884                          * qla4xxx_update_isid(). We need original isid in
5885                          * function qla4xxx_compare_tuple_ddb to find duplicate
5886                          * target */
5887                         memcpy(&nt_ddb_idx->flash_isid[0],
5888                                &fw_ddb_entry->isid[0],
5889                                sizeof(nt_ddb_idx->flash_isid));
5890
5891                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
5892                                                           fw_ddb_entry);
5893                         if (ret == QLA_SUCCESS) {
5894                                 /* free nt_ddb_idx and do not add to list_nt */
5895                                 vfree(nt_ddb_idx);
5896                                 goto continue_next_nt;
5897                         }
5898
5899                         /* Copy updated isid */
5900                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
5901                                sizeof(struct dev_db_entry));
5902
5903                         list_add_tail(&nt_ddb_idx->list, list_nt);
5904                 } else if (is_reset == RESET_ADAPTER) {
5905                         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
5906                                                         &ddb_idx);
5907                         if (ret == QLA_SUCCESS) {
5908                                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
5909                                                                        ddb_idx);
5910                                 if (ddb_entry != NULL)
5911                                         qla4xxx_update_sess_disc_idx(ha,
5912                                                                      ddb_entry,
5913                                                                   fw_ddb_entry);
5914                                 goto continue_next_nt;
5915                         }
5916                 }
5917
5918                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
5919                 if (ret == QLA_ERROR)
5920                         goto exit_nt_list;
5921
5922 continue_next_nt:
5923                 if (next_idx == 0)
5924                         break;
5925         }
5926
5927 exit_nt_list:
5928         if (fw_ddb_entry)
5929                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5930 }
5931
5932 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
5933                                       struct list_head *list_nt,
5934                                       uint16_t target_id)
5935 {
5936         struct dev_db_entry *fw_ddb_entry;
5937         dma_addr_t fw_ddb_dma;
5938         int max_ddbs;
5939         int fw_idx_size;
5940         int ret;
5941         uint32_t idx = 0, next_idx = 0;
5942         uint32_t state = 0, conn_err = 0;
5943         uint16_t conn_id = 0;
5944         struct qla_ddb_index  *nt_ddb_idx;
5945
5946         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5947                                       &fw_ddb_dma);
5948         if (fw_ddb_entry == NULL) {
5949                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5950                 goto exit_new_nt_list;
5951         }
5952         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5953                                      MAX_DEV_DB_ENTRIES;
5954         fw_idx_size = sizeof(struct qla_ddb_index);
5955
5956         for (idx = 0; idx < max_ddbs; idx = next_idx) {
5957                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5958                                               NULL, &next_idx, &state,
5959                                               &conn_err, NULL, &conn_id);
5960                 if (ret == QLA_ERROR)
5961                         break;
5962
5963                 /* Check if NT, then add it to list */
5964                 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
5965                         goto continue_next_new_nt;
5966
5967                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
5968                         goto continue_next_new_nt;
5969
5970                 DEBUG2(ql4_printk(KERN_INFO, ha,
5971                                   "Adding  DDB to session = 0x%x\n", idx));
5972
5973                 nt_ddb_idx = vmalloc(fw_idx_size);
5974                 if (!nt_ddb_idx)
5975                         break;
5976
5977                 nt_ddb_idx->fw_ddb_idx = idx;
5978
5979                 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
5980                 if (ret == QLA_SUCCESS) {
5981                         /* free nt_ddb_idx and do not add to list_nt */
5982                         vfree(nt_ddb_idx);
5983                         goto continue_next_new_nt;
5984                 }
5985
5986                 if (target_id < max_ddbs)
5987                         fw_ddb_entry->ddb_link = cpu_to_le16(target_id);
5988
5989                 list_add_tail(&nt_ddb_idx->list, list_nt);
5990
5991                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
5992                                               idx);
5993                 if (ret == QLA_ERROR)
5994                         goto exit_new_nt_list;
5995
5996 continue_next_new_nt:
5997                 if (next_idx == 0)
5998                         break;
5999         }
6000
6001 exit_new_nt_list:
6002         if (fw_ddb_entry)
6003                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6004 }
6005
6006 /**
6007  * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
6008  * @dev: dev associated with the sysfs entry
6009  * @data: pointer to flashnode session object
6010  *
6011  * Returns:
6012  *      1: if flashnode entry is non-persistent
6013  *      0: if flashnode entry is persistent
6014  **/
6015 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
6016 {
6017         struct iscsi_bus_flash_session *fnode_sess;
6018
6019         if (!iscsi_flashnode_bus_match(dev, NULL))
6020                 return 0;
6021
6022         fnode_sess = iscsi_dev_to_flash_session(dev);
6023
6024         return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
6025 }
6026
6027 /**
6028  * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
6029  * @ha: pointer to host
6030  * @fw_ddb_entry: flash ddb data
6031  * @idx: target index
6032  * @user: if set then this call is made from userland else from kernel
6033  *
6034  * Returns:
6035  * On sucess: QLA_SUCCESS
6036  * On failure: QLA_ERROR
6037  *
6038  * This create separate sysfs entries for session and connection attributes of
6039  * the given fw ddb entry.
6040  * If this is invoked as a result of a userspace call then the entry is marked
6041  * as nonpersistent using flash_state field.
6042  **/
6043 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
6044                                         struct dev_db_entry *fw_ddb_entry,
6045                                         uint16_t *idx, int user)
6046 {
6047         struct iscsi_bus_flash_session *fnode_sess = NULL;
6048         struct iscsi_bus_flash_conn *fnode_conn = NULL;
6049         int rc = QLA_ERROR;
6050
6051         fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
6052                                                  &qla4xxx_iscsi_transport, 0);
6053         if (!fnode_sess) {
6054                 ql4_printk(KERN_ERR, ha,
6055                            "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
6056                            __func__, *idx, ha->host_no);
6057                 goto exit_tgt_create;
6058         }
6059
6060         fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
6061                                                  &qla4xxx_iscsi_transport, 0);
6062         if (!fnode_conn) {
6063                 ql4_printk(KERN_ERR, ha,
6064                            "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
6065                            __func__, *idx, ha->host_no);
6066                 goto free_sess;
6067         }
6068
6069         if (user) {
6070                 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
6071         } else {
6072                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
6073
6074                 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
6075                         fnode_sess->is_boot_target = 1;
6076                 else
6077                         fnode_sess->is_boot_target = 0;
6078         }
6079
6080         rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
6081                                            fw_ddb_entry);
6082
6083         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
6084                    __func__, fnode_sess->dev.kobj.name);
6085
6086         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
6087                    __func__, fnode_conn->dev.kobj.name);
6088
6089         return QLA_SUCCESS;
6090
6091 free_sess:
6092         iscsi_destroy_flashnode_sess(fnode_sess);
6093
6094 exit_tgt_create:
6095         return QLA_ERROR;
6096 }
6097
6098 /**
6099  * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
6100  * @shost: pointer to host
6101  * @buf: type of ddb entry (ipv4/ipv6)
6102  * @len: length of buf
6103  *
6104  * This creates new ddb entry in the flash by finding first free index and
6105  * storing default ddb there. And then create sysfs entry for the new ddb entry.
6106  **/
6107 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
6108                                  int len)
6109 {
6110         struct scsi_qla_host *ha = to_qla_host(shost);
6111         struct dev_db_entry *fw_ddb_entry = NULL;
6112         dma_addr_t fw_ddb_entry_dma;
6113         struct device *dev;
6114         uint16_t idx = 0;
6115         uint16_t max_ddbs = 0;
6116         uint32_t options = 0;
6117         uint32_t rval = QLA_ERROR;
6118
6119         if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
6120             strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
6121                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
6122                                   __func__));
6123                 goto exit_ddb_add;
6124         }
6125
6126         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
6127                                      MAX_DEV_DB_ENTRIES;
6128
6129         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6130                                           &fw_ddb_entry_dma, GFP_KERNEL);
6131         if (!fw_ddb_entry) {
6132                 DEBUG2(ql4_printk(KERN_ERR, ha,
6133                                   "%s: Unable to allocate dma buffer\n",
6134                                   __func__));
6135                 goto exit_ddb_add;
6136         }
6137
6138         dev = iscsi_find_flashnode_sess(ha->host, NULL,
6139                                         qla4xxx_sysfs_ddb_is_non_persistent);
6140         if (dev) {
6141                 ql4_printk(KERN_ERR, ha,
6142                            "%s: A non-persistent entry %s found\n",
6143                            __func__, dev->kobj.name);
6144                 put_device(dev);
6145                 goto exit_ddb_add;
6146         }
6147
6148         /* Index 0 and 1 are reserved for boot target entries */
6149         for (idx = 2; idx < max_ddbs; idx++) {
6150                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
6151                                              fw_ddb_entry_dma, idx))
6152                         break;
6153         }
6154
6155         if (idx == max_ddbs)
6156                 goto exit_ddb_add;
6157
6158         if (!strncasecmp("ipv6", buf, 4))
6159                 options |= IPV6_DEFAULT_DDB_ENTRY;
6160
6161         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
6162         if (rval == QLA_ERROR)
6163                 goto exit_ddb_add;
6164
6165         rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
6166
6167 exit_ddb_add:
6168         if (fw_ddb_entry)
6169                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6170                                   fw_ddb_entry, fw_ddb_entry_dma);
6171         if (rval == QLA_SUCCESS)
6172                 return idx;
6173         else
6174                 return -EIO;
6175 }
6176
6177 /**
6178  * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
6179  * @fnode_sess: pointer to session attrs of flash ddb entry
6180  * @fnode_conn: pointer to connection attrs of flash ddb entry
6181  *
6182  * This writes the contents of target ddb buffer to Flash with a valid cookie
6183  * value in order to make the ddb entry persistent.
6184  **/
6185 static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
6186                                     struct iscsi_bus_flash_conn *fnode_conn)
6187 {
6188         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6189         struct scsi_qla_host *ha = to_qla_host(shost);
6190         uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
6191         struct dev_db_entry *fw_ddb_entry = NULL;
6192         dma_addr_t fw_ddb_entry_dma;
6193         uint32_t options = 0;
6194         int rval = 0;
6195
6196         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6197                                           &fw_ddb_entry_dma, GFP_KERNEL);
6198         if (!fw_ddb_entry) {
6199                 DEBUG2(ql4_printk(KERN_ERR, ha,
6200                                   "%s: Unable to allocate dma buffer\n",
6201                                   __func__));
6202                 rval = -ENOMEM;
6203                 goto exit_ddb_apply;
6204         }
6205
6206         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6207                 options |= IPV6_DEFAULT_DDB_ENTRY;
6208
6209         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
6210         if (rval == QLA_ERROR)
6211                 goto exit_ddb_apply;
6212
6213         dev_db_start_offset += (fnode_sess->target_id *
6214                                 sizeof(*fw_ddb_entry));
6215
6216         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
6217         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
6218
6219         rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
6220                                  sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
6221
6222         if (rval == QLA_SUCCESS) {
6223                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
6224                 ql4_printk(KERN_INFO, ha,
6225                            "%s: flash node %u of host %lu written to flash\n",
6226                            __func__, fnode_sess->target_id, ha->host_no);
6227         } else {
6228                 rval = -EIO;
6229                 ql4_printk(KERN_ERR, ha,
6230                            "%s: Error while writing flash node %u of host %lu to flash\n",
6231                            __func__, fnode_sess->target_id, ha->host_no);
6232         }
6233
6234 exit_ddb_apply:
6235         if (fw_ddb_entry)
6236                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6237                                   fw_ddb_entry, fw_ddb_entry_dma);
6238         return rval;
6239 }
6240
6241 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
6242                                            struct dev_db_entry *fw_ddb_entry,
6243                                            uint16_t idx)
6244 {
6245         struct dev_db_entry *ddb_entry = NULL;
6246         dma_addr_t ddb_entry_dma;
6247         unsigned long wtime;
6248         uint32_t mbx_sts = 0;
6249         uint32_t state = 0, conn_err = 0;
6250         uint16_t tmo = 0;
6251         int ret = 0;
6252
6253         ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
6254                                        &ddb_entry_dma, GFP_KERNEL);
6255         if (!ddb_entry) {
6256                 DEBUG2(ql4_printk(KERN_ERR, ha,
6257                                   "%s: Unable to allocate dma buffer\n",
6258                                   __func__));
6259                 return QLA_ERROR;
6260         }
6261
6262         memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
6263
6264         ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
6265         if (ret != QLA_SUCCESS) {
6266                 DEBUG2(ql4_printk(KERN_ERR, ha,
6267                                   "%s: Unable to set ddb entry for index %d\n",
6268                                   __func__, idx));
6269                 goto exit_ddb_conn_open;
6270         }
6271
6272         qla4xxx_conn_open(ha, idx);
6273
6274         /* To ensure that sendtargets is done, wait for at least 12 secs */
6275         tmo = ((ha->def_timeout > LOGIN_TOV) &&
6276                (ha->def_timeout < LOGIN_TOV * 10) ?
6277                ha->def_timeout : LOGIN_TOV);
6278
6279         DEBUG2(ql4_printk(KERN_INFO, ha,
6280                           "Default time to wait for login to ddb %d\n", tmo));
6281
6282         wtime = jiffies + (HZ * tmo);
6283         do {
6284                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
6285                                               NULL, &state, &conn_err, NULL,
6286                                               NULL);
6287                 if (ret == QLA_ERROR)
6288                         continue;
6289
6290                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
6291                     state == DDB_DS_SESSION_FAILED)
6292                         break;
6293
6294                 schedule_timeout_uninterruptible(HZ / 10);
6295         } while (time_after(wtime, jiffies));
6296
6297 exit_ddb_conn_open:
6298         if (ddb_entry)
6299                 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
6300                                   ddb_entry, ddb_entry_dma);
6301         return ret;
6302 }
6303
6304 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
6305                                 struct dev_db_entry *fw_ddb_entry,
6306                                 uint16_t target_id)
6307 {
6308         struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
6309         struct list_head list_nt;
6310         uint16_t ddb_index;
6311         int ret = 0;
6312
6313         if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
6314                 ql4_printk(KERN_WARNING, ha,
6315                            "%s: A discovery already in progress!\n", __func__);
6316                 return QLA_ERROR;
6317         }
6318
6319         INIT_LIST_HEAD(&list_nt);
6320
6321         set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
6322
6323         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
6324         if (ret == QLA_ERROR)
6325                 goto exit_login_st_clr_bit;
6326
6327         ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
6328         if (ret == QLA_ERROR)
6329                 goto exit_login_st;
6330
6331         qla4xxx_build_new_nt_list(ha, &list_nt, target_id);
6332
6333         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
6334                 list_del_init(&ddb_idx->list);
6335                 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
6336                 vfree(ddb_idx);
6337         }
6338
6339 exit_login_st:
6340         if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
6341                 ql4_printk(KERN_ERR, ha,
6342                            "Unable to clear DDB index = 0x%x\n", ddb_index);
6343         }
6344
6345         clear_bit(ddb_index, ha->ddb_idx_map);
6346
6347 exit_login_st_clr_bit:
6348         clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
6349         return ret;
6350 }
6351
6352 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
6353                                 struct dev_db_entry *fw_ddb_entry,
6354                                 uint16_t idx)
6355 {
6356         int ret = QLA_ERROR;
6357
6358         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
6359         if (ret != QLA_SUCCESS)
6360                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
6361                                               idx);
6362         else
6363                 ret = -EPERM;
6364
6365         return ret;
6366 }
6367
6368 /**
6369  * qla4xxx_sysfs_ddb_login - Login to the specified target
6370  * @fnode_sess: pointer to session attrs of flash ddb entry
6371  * @fnode_conn: pointer to connection attrs of flash ddb entry
6372  *
6373  * This logs in to the specified target
6374  **/
6375 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
6376                                    struct iscsi_bus_flash_conn *fnode_conn)
6377 {
6378         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6379         struct scsi_qla_host *ha = to_qla_host(shost);
6380         struct dev_db_entry *fw_ddb_entry = NULL;
6381         dma_addr_t fw_ddb_entry_dma;
6382         uint32_t options = 0;
6383         int ret = 0;
6384
6385         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
6386                 ql4_printk(KERN_ERR, ha,
6387                            "%s: Target info is not persistent\n", __func__);
6388                 ret = -EIO;
6389                 goto exit_ddb_login;
6390         }
6391
6392         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6393                                           &fw_ddb_entry_dma, GFP_KERNEL);
6394         if (!fw_ddb_entry) {
6395                 DEBUG2(ql4_printk(KERN_ERR, ha,
6396                                   "%s: Unable to allocate dma buffer\n",
6397                                   __func__));
6398                 ret = -ENOMEM;
6399                 goto exit_ddb_login;
6400         }
6401
6402         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6403                 options |= IPV6_DEFAULT_DDB_ENTRY;
6404
6405         ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
6406         if (ret == QLA_ERROR)
6407                 goto exit_ddb_login;
6408
6409         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
6410         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
6411
6412         if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
6413                 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
6414                                            fnode_sess->target_id);
6415         else
6416                 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
6417                                            fnode_sess->target_id);
6418
6419         if (ret > 0)
6420                 ret = -EIO;
6421
6422 exit_ddb_login:
6423         if (fw_ddb_entry)
6424                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6425                                   fw_ddb_entry, fw_ddb_entry_dma);
6426         return ret;
6427 }
6428
6429 /**
6430  * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
6431  * @cls_sess: pointer to session to be logged out
6432  *
6433  * This performs session log out from the specified target
6434  **/
6435 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
6436 {
6437         struct iscsi_session *sess;
6438         struct ddb_entry *ddb_entry = NULL;
6439         struct scsi_qla_host *ha;
6440         struct dev_db_entry *fw_ddb_entry = NULL;
6441         dma_addr_t fw_ddb_entry_dma;
6442         unsigned long flags;
6443         unsigned long wtime;
6444         uint32_t ddb_state;
6445         int options;
6446         int ret = 0;
6447
6448         sess = cls_sess->dd_data;
6449         ddb_entry = sess->dd_data;
6450         ha = ddb_entry->ha;
6451
6452         if (ddb_entry->ddb_type != FLASH_DDB) {
6453                 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
6454                            __func__);
6455                 ret = -ENXIO;
6456                 goto exit_ddb_logout;
6457         }
6458
6459         if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
6460                 ql4_printk(KERN_ERR, ha,
6461                            "%s: Logout from boot target entry is not permitted.\n",
6462                            __func__);
6463                 ret = -EPERM;
6464                 goto exit_ddb_logout;
6465         }
6466
6467         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6468                                           &fw_ddb_entry_dma, GFP_KERNEL);
6469         if (!fw_ddb_entry) {
6470                 ql4_printk(KERN_ERR, ha,
6471                            "%s: Unable to allocate dma buffer\n", __func__);
6472                 ret = -ENOMEM;
6473                 goto exit_ddb_logout;
6474         }
6475
6476         if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
6477                 goto ddb_logout_init;
6478
6479         ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
6480                                       fw_ddb_entry, fw_ddb_entry_dma,
6481                                       NULL, NULL, &ddb_state, NULL,
6482                                       NULL, NULL);
6483         if (ret == QLA_ERROR)
6484                 goto ddb_logout_init;
6485
6486         if (ddb_state == DDB_DS_SESSION_ACTIVE)
6487                 goto ddb_logout_init;
6488
6489         /* wait until next relogin is triggered using DF_RELOGIN and
6490          * clear DF_RELOGIN to avoid invocation of further relogin
6491          */
6492         wtime = jiffies + (HZ * RELOGIN_TOV);
6493         do {
6494                 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
6495                         goto ddb_logout_init;
6496
6497                 schedule_timeout_uninterruptible(HZ);
6498         } while ((time_after(wtime, jiffies)));
6499
6500 ddb_logout_init:
6501         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6502         atomic_set(&ddb_entry->relogin_timer, 0);
6503
6504         options = LOGOUT_OPTION_CLOSE_SESSION;
6505         qla4xxx_session_logout_ddb(ha, ddb_entry, options);
6506
6507         memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
6508         wtime = jiffies + (HZ * LOGOUT_TOV);
6509         do {
6510                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
6511                                               fw_ddb_entry, fw_ddb_entry_dma,
6512                                               NULL, NULL, &ddb_state, NULL,
6513                                               NULL, NULL);
6514                 if (ret == QLA_ERROR)
6515                         goto ddb_logout_clr_sess;
6516
6517                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
6518                     (ddb_state == DDB_DS_SESSION_FAILED))
6519                         goto ddb_logout_clr_sess;
6520
6521                 schedule_timeout_uninterruptible(HZ);
6522         } while ((time_after(wtime, jiffies)));
6523
6524 ddb_logout_clr_sess:
6525         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
6526         /*
6527          * we have decremented the reference count of the driver
6528          * when we setup the session to have the driver unload
6529          * to be seamless without actually destroying the
6530          * session
6531          **/
6532         try_module_get(qla4xxx_iscsi_transport.owner);
6533         iscsi_destroy_endpoint(ddb_entry->conn->ep);
6534
6535         spin_lock_irqsave(&ha->hardware_lock, flags);
6536         qla4xxx_free_ddb(ha, ddb_entry);
6537         clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
6538         spin_unlock_irqrestore(&ha->hardware_lock, flags);
6539
6540         iscsi_session_teardown(ddb_entry->sess);
6541
6542         clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
6543         ret = QLA_SUCCESS;
6544
6545 exit_ddb_logout:
6546         if (fw_ddb_entry)
6547                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6548                                   fw_ddb_entry, fw_ddb_entry_dma);
6549         return ret;
6550 }
6551
6552 /**
6553  * qla4xxx_sysfs_ddb_logout - Logout from the specified target
6554  * @fnode_sess: pointer to session attrs of flash ddb entry
6555  * @fnode_conn: pointer to connection attrs of flash ddb entry
6556  *
6557  * This performs log out from the specified target
6558  **/
6559 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
6560                                     struct iscsi_bus_flash_conn *fnode_conn)
6561 {
6562         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6563         struct scsi_qla_host *ha = to_qla_host(shost);
6564         struct ql4_tuple_ddb *flash_tddb = NULL;
6565         struct ql4_tuple_ddb *tmp_tddb = NULL;
6566         struct dev_db_entry *fw_ddb_entry = NULL;
6567         struct ddb_entry *ddb_entry = NULL;
6568         dma_addr_t fw_ddb_dma;
6569         uint32_t next_idx = 0;
6570         uint32_t state = 0, conn_err = 0;
6571         uint16_t conn_id = 0;
6572         int idx, index;
6573         int status, ret = 0;
6574
6575         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6576                                       &fw_ddb_dma);
6577         if (fw_ddb_entry == NULL) {
6578                 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
6579                 ret = -ENOMEM;
6580                 goto exit_ddb_logout;
6581         }
6582
6583         flash_tddb = vzalloc(sizeof(*flash_tddb));
6584         if (!flash_tddb) {
6585                 ql4_printk(KERN_WARNING, ha,
6586                            "%s:Memory Allocation failed.\n", __func__);
6587                 ret = -ENOMEM;
6588                 goto exit_ddb_logout;
6589         }
6590
6591         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6592         if (!tmp_tddb) {
6593                 ql4_printk(KERN_WARNING, ha,
6594                            "%s:Memory Allocation failed.\n", __func__);
6595                 ret = -ENOMEM;
6596                 goto exit_ddb_logout;
6597         }
6598
6599         if (!fnode_sess->targetname) {
6600                 ql4_printk(KERN_ERR, ha,
6601                            "%s:Cannot logout from SendTarget entry\n",
6602                            __func__);
6603                 ret = -EPERM;
6604                 goto exit_ddb_logout;
6605         }
6606
6607         if (fnode_sess->is_boot_target) {
6608                 ql4_printk(KERN_ERR, ha,
6609                            "%s: Logout from boot target entry is not permitted.\n",
6610                            __func__);
6611                 ret = -EPERM;
6612                 goto exit_ddb_logout;
6613         }
6614
6615         strncpy(flash_tddb->iscsi_name, fnode_sess->targetname,
6616                 ISCSI_NAME_SIZE);
6617
6618         if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6619                 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
6620         else
6621                 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
6622
6623         flash_tddb->tpgt = fnode_sess->tpgt;
6624         flash_tddb->port = fnode_conn->port;
6625
6626         COPY_ISID(flash_tddb->isid, fnode_sess->isid);
6627
6628         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6629                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6630                 if (ddb_entry == NULL)
6631                         continue;
6632
6633                 if (ddb_entry->ddb_type != FLASH_DDB)
6634                         continue;
6635
6636                 index = ddb_entry->sess->target_id;
6637                 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
6638                                                  fw_ddb_dma, NULL, &next_idx,
6639                                                  &state, &conn_err, NULL,
6640                                                  &conn_id);
6641                 if (status == QLA_ERROR) {
6642                         ret = -ENOMEM;
6643                         break;
6644                 }
6645
6646                 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
6647
6648                 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
6649                                                    true);
6650                 if (status == QLA_SUCCESS) {
6651                         ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
6652                         break;
6653                 }
6654         }
6655
6656         if (idx == MAX_DDB_ENTRIES)
6657                 ret = -ESRCH;
6658
6659 exit_ddb_logout:
6660         if (flash_tddb)
6661                 vfree(flash_tddb);
6662         if (tmp_tddb)
6663                 vfree(tmp_tddb);
6664         if (fw_ddb_entry)
6665                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6666
6667         return ret;
6668 }
6669
6670 static int
6671 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
6672                             int param, char *buf)
6673 {
6674         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6675         struct scsi_qla_host *ha = to_qla_host(shost);
6676         struct iscsi_bus_flash_conn *fnode_conn;
6677         struct ql4_chap_table chap_tbl;
6678         struct device *dev;
6679         int parent_type;
6680         int rc = 0;
6681
6682         dev = iscsi_find_flashnode_conn(fnode_sess);
6683         if (!dev)
6684                 return -EIO;
6685
6686         fnode_conn = iscsi_dev_to_flash_conn(dev);
6687
6688         switch (param) {
6689         case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
6690                 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
6691                 break;
6692         case ISCSI_FLASHNODE_PORTAL_TYPE:
6693                 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
6694                 break;
6695         case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
6696                 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
6697                 break;
6698         case ISCSI_FLASHNODE_DISCOVERY_SESS:
6699                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
6700                 break;
6701         case ISCSI_FLASHNODE_ENTRY_EN:
6702                 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
6703                 break;
6704         case ISCSI_FLASHNODE_HDR_DGST_EN:
6705                 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
6706                 break;
6707         case ISCSI_FLASHNODE_DATA_DGST_EN:
6708                 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
6709                 break;
6710         case ISCSI_FLASHNODE_IMM_DATA_EN:
6711                 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
6712                 break;
6713         case ISCSI_FLASHNODE_INITIAL_R2T_EN:
6714                 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
6715                 break;
6716         case ISCSI_FLASHNODE_DATASEQ_INORDER:
6717                 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
6718                 break;
6719         case ISCSI_FLASHNODE_PDU_INORDER:
6720                 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
6721                 break;
6722         case ISCSI_FLASHNODE_CHAP_AUTH_EN:
6723                 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
6724                 break;
6725         case ISCSI_FLASHNODE_SNACK_REQ_EN:
6726                 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
6727                 break;
6728         case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
6729                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
6730                 break;
6731         case ISCSI_FLASHNODE_BIDI_CHAP_EN:
6732                 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
6733                 break;
6734         case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
6735                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
6736                 break;
6737         case ISCSI_FLASHNODE_ERL:
6738                 rc = sprintf(buf, "%u\n", fnode_sess->erl);
6739                 break;
6740         case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
6741                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
6742                 break;
6743         case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
6744                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
6745                 break;
6746         case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
6747                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
6748                 break;
6749         case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
6750                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
6751                 break;
6752         case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
6753                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
6754                 break;
6755         case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
6756                 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
6757                 break;
6758         case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
6759                 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
6760                 break;
6761         case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
6762                 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
6763                 break;
6764         case ISCSI_FLASHNODE_FIRST_BURST:
6765                 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
6766                 break;
6767         case ISCSI_FLASHNODE_DEF_TIME2WAIT:
6768                 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
6769                 break;
6770         case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
6771                 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
6772                 break;
6773         case ISCSI_FLASHNODE_MAX_R2T:
6774                 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
6775                 break;
6776         case ISCSI_FLASHNODE_KEEPALIVE_TMO:
6777                 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
6778                 break;
6779         case ISCSI_FLASHNODE_ISID:
6780                 rc = sprintf(buf, "%02x%02x%02x%02x%02x%02x\n",
6781                              fnode_sess->isid[0], fnode_sess->isid[1],
6782                              fnode_sess->isid[2], fnode_sess->isid[3],
6783                              fnode_sess->isid[4], fnode_sess->isid[5]);
6784                 break;
6785         case ISCSI_FLASHNODE_TSID:
6786                 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
6787                 break;
6788         case ISCSI_FLASHNODE_PORT:
6789                 rc = sprintf(buf, "%d\n", fnode_conn->port);
6790                 break;
6791         case ISCSI_FLASHNODE_MAX_BURST:
6792                 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
6793                 break;
6794         case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
6795                 rc = sprintf(buf, "%u\n",
6796                              fnode_sess->default_taskmgmt_timeout);
6797                 break;
6798         case ISCSI_FLASHNODE_IPADDR:
6799                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6800                         rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
6801                 else
6802                         rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
6803                 break;
6804         case ISCSI_FLASHNODE_ALIAS:
6805                 if (fnode_sess->targetalias)
6806                         rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
6807                 else
6808                         rc = sprintf(buf, "\n");
6809                 break;
6810         case ISCSI_FLASHNODE_REDIRECT_IPADDR:
6811                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6812                         rc = sprintf(buf, "%pI6\n",
6813                                      fnode_conn->redirect_ipaddr);
6814                 else
6815                         rc = sprintf(buf, "%pI4\n",
6816                                      fnode_conn->redirect_ipaddr);
6817                 break;
6818         case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
6819                 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
6820                 break;
6821         case ISCSI_FLASHNODE_LOCAL_PORT:
6822                 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
6823                 break;
6824         case ISCSI_FLASHNODE_IPV4_TOS:
6825                 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
6826                 break;
6827         case ISCSI_FLASHNODE_IPV6_TC:
6828                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6829                         rc = sprintf(buf, "%u\n",
6830                                      fnode_conn->ipv6_traffic_class);
6831                 else
6832                         rc = sprintf(buf, "\n");
6833                 break;
6834         case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
6835                 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
6836                 break;
6837         case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
6838                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6839                         rc = sprintf(buf, "%pI6\n",
6840                                      fnode_conn->link_local_ipv6_addr);
6841                 else
6842                         rc = sprintf(buf, "\n");
6843                 break;
6844         case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
6845                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
6846                 break;
6847         case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
6848                 if (fnode_sess->discovery_parent_type == DDB_ISNS)
6849                         parent_type = ISCSI_DISC_PARENT_ISNS;
6850                 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
6851                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
6852                 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
6853                         parent_type = ISCSI_DISC_PARENT_SENDTGT;
6854                 else
6855                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
6856
6857                 rc = sprintf(buf, "%s\n",
6858                              iscsi_get_discovery_parent_name(parent_type));
6859                 break;
6860         case ISCSI_FLASHNODE_NAME:
6861                 if (fnode_sess->targetname)
6862                         rc = sprintf(buf, "%s\n", fnode_sess->targetname);
6863                 else
6864                         rc = sprintf(buf, "\n");
6865                 break;
6866         case ISCSI_FLASHNODE_TPGT:
6867                 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
6868                 break;
6869         case ISCSI_FLASHNODE_TCP_XMIT_WSF:
6870                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
6871                 break;
6872         case ISCSI_FLASHNODE_TCP_RECV_WSF:
6873                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
6874                 break;
6875         case ISCSI_FLASHNODE_CHAP_OUT_IDX:
6876                 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
6877                 break;
6878         case ISCSI_FLASHNODE_USERNAME:
6879                 if (fnode_sess->chap_auth_en) {
6880                         qla4xxx_get_uni_chap_at_index(ha,
6881                                                       chap_tbl.name,
6882                                                       chap_tbl.secret,
6883                                                       fnode_sess->chap_out_idx);
6884                         rc = sprintf(buf, "%s\n", chap_tbl.name);
6885                 } else {
6886                         rc = sprintf(buf, "\n");
6887                 }
6888                 break;
6889         case ISCSI_FLASHNODE_PASSWORD:
6890                 if (fnode_sess->chap_auth_en) {
6891                         qla4xxx_get_uni_chap_at_index(ha,
6892                                                       chap_tbl.name,
6893                                                       chap_tbl.secret,
6894                                                       fnode_sess->chap_out_idx);
6895                         rc = sprintf(buf, "%s\n", chap_tbl.secret);
6896                 } else {
6897                         rc = sprintf(buf, "\n");
6898                 }
6899                 break;
6900         case ISCSI_FLASHNODE_STATSN:
6901                 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
6902                 break;
6903         case ISCSI_FLASHNODE_EXP_STATSN:
6904                 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
6905                 break;
6906         case ISCSI_FLASHNODE_IS_BOOT_TGT:
6907                 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
6908                 break;
6909         default:
6910                 rc = -ENOSYS;
6911                 break;
6912         }
6913
6914         put_device(dev);
6915         return rc;
6916 }
6917
6918 /**
6919  * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
6920  * @fnode_sess: pointer to session attrs of flash ddb entry
6921  * @fnode_conn: pointer to connection attrs of flash ddb entry
6922  * @data: Parameters and their values to update
6923  * @len: len of data
6924  *
6925  * This sets the parameter of flash ddb entry and writes them to flash
6926  **/
6927 static int
6928 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
6929                             struct iscsi_bus_flash_conn *fnode_conn,
6930                             void *data, int len)
6931 {
6932         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6933         struct scsi_qla_host *ha = to_qla_host(shost);
6934         struct iscsi_flashnode_param_info *fnode_param;
6935         struct ql4_chap_table chap_tbl;
6936         struct nlattr *attr;
6937         uint16_t chap_out_idx = INVALID_ENTRY;
6938         int rc = QLA_ERROR;
6939         uint32_t rem = len;
6940
6941         memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
6942         nla_for_each_attr(attr, data, len, rem) {
6943                 fnode_param = nla_data(attr);
6944
6945                 switch (fnode_param->param) {
6946                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
6947                         fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
6948                         break;
6949                 case ISCSI_FLASHNODE_PORTAL_TYPE:
6950                         memcpy(fnode_sess->portal_type, fnode_param->value,
6951                                strlen(fnode_sess->portal_type));
6952                         break;
6953                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
6954                         fnode_sess->auto_snd_tgt_disable =
6955                                                         fnode_param->value[0];
6956                         break;
6957                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
6958                         fnode_sess->discovery_sess = fnode_param->value[0];
6959                         break;
6960                 case ISCSI_FLASHNODE_ENTRY_EN:
6961                         fnode_sess->entry_state = fnode_param->value[0];
6962                         break;
6963                 case ISCSI_FLASHNODE_HDR_DGST_EN:
6964                         fnode_conn->hdrdgst_en = fnode_param->value[0];
6965                         break;
6966                 case ISCSI_FLASHNODE_DATA_DGST_EN:
6967                         fnode_conn->datadgst_en = fnode_param->value[0];
6968                         break;
6969                 case ISCSI_FLASHNODE_IMM_DATA_EN:
6970                         fnode_sess->imm_data_en = fnode_param->value[0];
6971                         break;
6972                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
6973                         fnode_sess->initial_r2t_en = fnode_param->value[0];
6974                         break;
6975                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
6976                         fnode_sess->dataseq_inorder_en = fnode_param->value[0];
6977                         break;
6978                 case ISCSI_FLASHNODE_PDU_INORDER:
6979                         fnode_sess->pdu_inorder_en = fnode_param->value[0];
6980                         break;
6981                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
6982                         fnode_sess->chap_auth_en = fnode_param->value[0];
6983                         /* Invalidate chap index if chap auth is disabled */
6984                         if (!fnode_sess->chap_auth_en)
6985                                 fnode_sess->chap_out_idx = INVALID_ENTRY;
6986
6987                         break;
6988                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
6989                         fnode_conn->snack_req_en = fnode_param->value[0];
6990                         break;
6991                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
6992                         fnode_sess->discovery_logout_en = fnode_param->value[0];
6993                         break;
6994                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
6995                         fnode_sess->bidi_chap_en = fnode_param->value[0];
6996                         break;
6997                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
6998                         fnode_sess->discovery_auth_optional =
6999                                                         fnode_param->value[0];
7000                         break;
7001                 case ISCSI_FLASHNODE_ERL:
7002                         fnode_sess->erl = fnode_param->value[0];
7003                         break;
7004                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
7005                         fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
7006                         break;
7007                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
7008                         fnode_conn->tcp_nagle_disable = fnode_param->value[0];
7009                         break;
7010                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
7011                         fnode_conn->tcp_wsf_disable = fnode_param->value[0];
7012                         break;
7013                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
7014                         fnode_conn->tcp_timer_scale = fnode_param->value[0];
7015                         break;
7016                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
7017                         fnode_conn->tcp_timestamp_en = fnode_param->value[0];
7018                         break;
7019                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
7020                         fnode_conn->fragment_disable = fnode_param->value[0];
7021                         break;
7022                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
7023                         fnode_conn->max_recv_dlength =
7024                                         *(unsigned *)fnode_param->value;
7025                         break;
7026                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
7027                         fnode_conn->max_xmit_dlength =
7028                                         *(unsigned *)fnode_param->value;
7029                         break;
7030                 case ISCSI_FLASHNODE_FIRST_BURST:
7031                         fnode_sess->first_burst =
7032                                         *(unsigned *)fnode_param->value;
7033                         break;
7034                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
7035                         fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
7036                         break;
7037                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
7038                         fnode_sess->time2retain =
7039                                                 *(uint16_t *)fnode_param->value;
7040                         break;
7041                 case ISCSI_FLASHNODE_MAX_R2T:
7042                         fnode_sess->max_r2t =
7043                                         *(uint16_t *)fnode_param->value;
7044                         break;
7045                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
7046                         fnode_conn->keepalive_timeout =
7047                                 *(uint16_t *)fnode_param->value;
7048                         break;
7049                 case ISCSI_FLASHNODE_ISID:
7050                         memcpy(fnode_sess->isid, fnode_param->value,
7051                                sizeof(fnode_sess->isid));
7052                         break;
7053                 case ISCSI_FLASHNODE_TSID:
7054                         fnode_sess->tsid = *(uint16_t *)fnode_param->value;
7055                         break;
7056                 case ISCSI_FLASHNODE_PORT:
7057                         fnode_conn->port = *(uint16_t *)fnode_param->value;
7058                         break;
7059                 case ISCSI_FLASHNODE_MAX_BURST:
7060                         fnode_sess->max_burst = *(unsigned *)fnode_param->value;
7061                         break;
7062                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
7063                         fnode_sess->default_taskmgmt_timeout =
7064                                                 *(uint16_t *)fnode_param->value;
7065                         break;
7066                 case ISCSI_FLASHNODE_IPADDR:
7067                         memcpy(fnode_conn->ipaddress, fnode_param->value,
7068                                IPv6_ADDR_LEN);
7069                         break;
7070                 case ISCSI_FLASHNODE_ALIAS:
7071                         rc = iscsi_switch_str_param(&fnode_sess->targetalias,
7072                                                     (char *)fnode_param->value);
7073                         break;
7074                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
7075                         memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
7076                                IPv6_ADDR_LEN);
7077                         break;
7078                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
7079                         fnode_conn->max_segment_size =
7080                                         *(unsigned *)fnode_param->value;
7081                         break;
7082                 case ISCSI_FLASHNODE_LOCAL_PORT:
7083                         fnode_conn->local_port =
7084                                                 *(uint16_t *)fnode_param->value;
7085                         break;
7086                 case ISCSI_FLASHNODE_IPV4_TOS:
7087                         fnode_conn->ipv4_tos = fnode_param->value[0];
7088                         break;
7089                 case ISCSI_FLASHNODE_IPV6_TC:
7090                         fnode_conn->ipv6_traffic_class = fnode_param->value[0];
7091                         break;
7092                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
7093                         fnode_conn->ipv6_flow_label = fnode_param->value[0];
7094                         break;
7095                 case ISCSI_FLASHNODE_NAME:
7096                         rc = iscsi_switch_str_param(&fnode_sess->targetname,
7097                                                     (char *)fnode_param->value);
7098                         break;
7099                 case ISCSI_FLASHNODE_TPGT:
7100                         fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
7101                         break;
7102                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
7103                         memcpy(fnode_conn->link_local_ipv6_addr,
7104                                fnode_param->value, IPv6_ADDR_LEN);
7105                         break;
7106                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
7107                         fnode_sess->discovery_parent_idx =
7108                                                 *(uint16_t *)fnode_param->value;
7109                         break;
7110                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
7111                         fnode_conn->tcp_xmit_wsf =
7112                                                 *(uint8_t *)fnode_param->value;
7113                         break;
7114                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
7115                         fnode_conn->tcp_recv_wsf =
7116                                                 *(uint8_t *)fnode_param->value;
7117                         break;
7118                 case ISCSI_FLASHNODE_STATSN:
7119                         fnode_conn->statsn = *(uint32_t *)fnode_param->value;
7120                         break;
7121                 case ISCSI_FLASHNODE_EXP_STATSN:
7122                         fnode_conn->exp_statsn =
7123                                                 *(uint32_t *)fnode_param->value;
7124                         break;
7125                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
7126                         chap_out_idx = *(uint16_t *)fnode_param->value;
7127                         if (!qla4xxx_get_uni_chap_at_index(ha,
7128                                                            chap_tbl.name,
7129                                                            chap_tbl.secret,
7130                                                            chap_out_idx)) {
7131                                 fnode_sess->chap_out_idx = chap_out_idx;
7132                                 /* Enable chap auth if chap index is valid */
7133                                 fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
7134                         }
7135                         break;
7136                 default:
7137                         ql4_printk(KERN_ERR, ha,
7138                                    "%s: No such sysfs attribute\n", __func__);
7139                         rc = -ENOSYS;
7140                         goto exit_set_param;
7141                 }
7142         }
7143
7144         rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
7145
7146 exit_set_param:
7147         return rc;
7148 }
7149
7150 /**
7151  * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
7152  * @fnode_sess: pointer to session attrs of flash ddb entry
7153  *
7154  * This invalidates the flash ddb entry at the given index
7155  **/
7156 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
7157 {
7158         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7159         struct scsi_qla_host *ha = to_qla_host(shost);
7160         uint32_t dev_db_start_offset;
7161         uint32_t dev_db_end_offset;
7162         struct dev_db_entry *fw_ddb_entry = NULL;
7163         dma_addr_t fw_ddb_entry_dma;
7164         uint16_t *ddb_cookie = NULL;
7165         size_t ddb_size = 0;
7166         void *pddb = NULL;
7167         int target_id;
7168         int rc = 0;
7169
7170         if (fnode_sess->is_boot_target) {
7171                 rc = -EPERM;
7172                 DEBUG2(ql4_printk(KERN_ERR, ha,
7173                                   "%s: Deletion of boot target entry is not permitted.\n",
7174                                   __func__));
7175                 goto exit_ddb_del;
7176         }
7177
7178         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
7179                 goto sysfs_ddb_del;
7180
7181         if (is_qla40XX(ha)) {
7182                 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
7183                 dev_db_end_offset = FLASH_OFFSET_DB_END;
7184                 dev_db_start_offset += (fnode_sess->target_id *
7185                                        sizeof(*fw_ddb_entry));
7186                 ddb_size = sizeof(*fw_ddb_entry);
7187         } else {
7188                 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
7189                                       (ha->hw.flt_region_ddb << 2);
7190                 /* flt_ddb_size is DDB table size for both ports
7191                  * so divide it by 2 to calculate the offset for second port
7192                  */
7193                 if (ha->port_num == 1)
7194                         dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
7195
7196                 dev_db_end_offset = dev_db_start_offset +
7197                                     (ha->hw.flt_ddb_size / 2);
7198
7199                 dev_db_start_offset += (fnode_sess->target_id *
7200                                        sizeof(*fw_ddb_entry));
7201                 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
7202
7203                 ddb_size = sizeof(*ddb_cookie);
7204         }
7205
7206         DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
7207                           __func__, dev_db_start_offset, dev_db_end_offset));
7208
7209         if (dev_db_start_offset > dev_db_end_offset) {
7210                 rc = -EIO;
7211                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
7212                                   __func__, fnode_sess->target_id));
7213                 goto exit_ddb_del;
7214         }
7215
7216         pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
7217                                   &fw_ddb_entry_dma, GFP_KERNEL);
7218         if (!pddb) {
7219                 rc = -ENOMEM;
7220                 DEBUG2(ql4_printk(KERN_ERR, ha,
7221                                   "%s: Unable to allocate dma buffer\n",
7222                                   __func__));
7223                 goto exit_ddb_del;
7224         }
7225
7226         if (is_qla40XX(ha)) {
7227                 fw_ddb_entry = pddb;
7228                 memset(fw_ddb_entry, 0, ddb_size);
7229                 ddb_cookie = &fw_ddb_entry->cookie;
7230         } else {
7231                 ddb_cookie = pddb;
7232         }
7233
7234         /* invalidate the cookie */
7235         *ddb_cookie = 0xFFEE;
7236         qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
7237                           ddb_size, FLASH_OPT_RMW_COMMIT);
7238
7239 sysfs_ddb_del:
7240         target_id = fnode_sess->target_id;
7241         iscsi_destroy_flashnode_sess(fnode_sess);
7242         ql4_printk(KERN_INFO, ha,
7243                    "%s: session and conn entries for flashnode %u of host %lu deleted\n",
7244                    __func__, target_id, ha->host_no);
7245 exit_ddb_del:
7246         if (pddb)
7247                 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
7248                                   fw_ddb_entry_dma);
7249         return rc;
7250 }
7251
7252 /**
7253  * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
7254  * @ha: pointer to adapter structure
7255  *
7256  * Export the firmware DDB for all send targets and normal targets to sysfs.
7257  **/
7258 static int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
7259 {
7260         struct dev_db_entry *fw_ddb_entry = NULL;
7261         dma_addr_t fw_ddb_entry_dma;
7262         uint16_t max_ddbs;
7263         uint16_t idx = 0;
7264         int ret = QLA_SUCCESS;
7265
7266         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
7267                                           sizeof(*fw_ddb_entry),
7268                                           &fw_ddb_entry_dma, GFP_KERNEL);
7269         if (!fw_ddb_entry) {
7270                 DEBUG2(ql4_printk(KERN_ERR, ha,
7271                                   "%s: Unable to allocate dma buffer\n",
7272                                   __func__));
7273                 return -ENOMEM;
7274         }
7275
7276         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
7277                                      MAX_DEV_DB_ENTRIES;
7278
7279         for (idx = 0; idx < max_ddbs; idx++) {
7280                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
7281                                              idx))
7282                         continue;
7283
7284                 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
7285                 if (ret) {
7286                         ret = -EIO;
7287                         break;
7288                 }
7289         }
7290
7291         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
7292                           fw_ddb_entry_dma);
7293
7294         return ret;
7295 }
7296
7297 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
7298 {
7299         iscsi_destroy_all_flashnode(ha->host);
7300 }
7301
7302 /**
7303  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
7304  * @ha: pointer to adapter structure
7305  * @is_reset: Is this init path or reset path
7306  *
7307  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
7308  * using connection open, then create the list of normal targets (nt)
7309  * from firmware DDBs. Based on the list of nt setup session and connection
7310  * objects.
7311  **/
7312 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
7313 {
7314         uint16_t tmo = 0;
7315         struct list_head list_st, list_nt;
7316         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
7317         unsigned long wtime;
7318
7319         if (!test_bit(AF_LINK_UP, &ha->flags)) {
7320                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
7321                 ha->is_reset = is_reset;
7322                 return;
7323         }
7324
7325         INIT_LIST_HEAD(&list_st);
7326         INIT_LIST_HEAD(&list_nt);
7327
7328         qla4xxx_build_st_list(ha, &list_st);
7329
7330         /* Before issuing conn open mbox, ensure all IPs states are configured
7331          * Note, conn open fails if IPs are not configured
7332          */
7333         qla4xxx_wait_for_ip_configuration(ha);
7334
7335         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
7336         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
7337                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
7338         }
7339
7340         /* Wait to ensure all sendtargets are done for min 12 sec wait */
7341         tmo = ((ha->def_timeout > LOGIN_TOV) &&
7342                (ha->def_timeout < LOGIN_TOV * 10) ?
7343                ha->def_timeout : LOGIN_TOV);
7344
7345         DEBUG2(ql4_printk(KERN_INFO, ha,
7346                           "Default time to wait for build ddb %d\n", tmo));
7347
7348         wtime = jiffies + (HZ * tmo);
7349         do {
7350                 if (list_empty(&list_st))
7351                         break;
7352
7353                 qla4xxx_remove_failed_ddb(ha, &list_st);
7354                 schedule_timeout_uninterruptible(HZ / 10);
7355         } while (time_after(wtime, jiffies));
7356
7357
7358         qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);
7359
7360         qla4xxx_free_ddb_list(&list_st);
7361         qla4xxx_free_ddb_list(&list_nt);
7362
7363         qla4xxx_free_ddb_index(ha);
7364 }
7365
7366 /**
7367  * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
7368  * response.
7369  * @ha: pointer to adapter structure
7370  *
7371  * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
7372  * set in DDB and we will wait for login response of boot targets during
7373  * probe.
7374  **/
7375 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
7376 {
7377         struct ddb_entry *ddb_entry;
7378         struct dev_db_entry *fw_ddb_entry = NULL;
7379         dma_addr_t fw_ddb_entry_dma;
7380         unsigned long wtime;
7381         uint32_t ddb_state;
7382         int max_ddbs, idx, ret;
7383
7384         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7385                                      MAX_DEV_DB_ENTRIES;
7386
7387         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7388                                           &fw_ddb_entry_dma, GFP_KERNEL);
7389         if (!fw_ddb_entry) {
7390                 ql4_printk(KERN_ERR, ha,
7391                            "%s: Unable to allocate dma buffer\n", __func__);
7392                 goto exit_login_resp;
7393         }
7394
7395         wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
7396
7397         for (idx = 0; idx < max_ddbs; idx++) {
7398                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7399                 if (ddb_entry == NULL)
7400                         continue;
7401
7402                 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
7403                         DEBUG2(ql4_printk(KERN_INFO, ha,
7404                                           "%s: DDB index [%d]\n", __func__,
7405                                           ddb_entry->fw_ddb_index));
7406                         do {
7407                                 ret = qla4xxx_get_fwddb_entry(ha,
7408                                                 ddb_entry->fw_ddb_index,
7409                                                 fw_ddb_entry, fw_ddb_entry_dma,
7410                                                 NULL, NULL, &ddb_state, NULL,
7411                                                 NULL, NULL);
7412                                 if (ret == QLA_ERROR)
7413                                         goto exit_login_resp;
7414
7415                                 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
7416                                     (ddb_state == DDB_DS_SESSION_FAILED))
7417                                         break;
7418
7419                                 schedule_timeout_uninterruptible(HZ);
7420
7421                         } while ((time_after(wtime, jiffies)));
7422
7423                         if (!time_after(wtime, jiffies)) {
7424                                 DEBUG2(ql4_printk(KERN_INFO, ha,
7425                                                   "%s: Login response wait timer expired\n",
7426                                                   __func__));
7427                                  goto exit_login_resp;
7428                         }
7429                 }
7430         }
7431
7432 exit_login_resp:
7433         if (fw_ddb_entry)
7434                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7435                                   fw_ddb_entry, fw_ddb_entry_dma);
7436 }
7437
7438 /**
7439  * qla4xxx_probe_adapter - callback function to probe HBA
7440  * @pdev: pointer to pci_dev structure
7441  * @pci_device_id: pointer to pci_device entry
7442  *
7443  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
7444  * It returns zero if successful. It also initializes all data necessary for
7445  * the driver.
7446  **/
7447 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
7448                                  const struct pci_device_id *ent)
7449 {
7450         int ret = -ENODEV, status;
7451         struct Scsi_Host *host;
7452         struct scsi_qla_host *ha;
7453         uint8_t init_retry_count = 0;
7454         char buf[34];
7455         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
7456         uint32_t dev_state;
7457
7458         if (pci_enable_device(pdev))
7459                 return -1;
7460
7461         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
7462         if (host == NULL) {
7463                 printk(KERN_WARNING
7464                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
7465                 goto probe_disable_device;
7466         }
7467
7468         /* Clear our data area */
7469         ha = to_qla_host(host);
7470         memset(ha, 0, sizeof(*ha));
7471
7472         /* Save the information from PCI BIOS.  */
7473         ha->pdev = pdev;
7474         ha->host = host;
7475         ha->host_no = host->host_no;
7476         ha->func_num = PCI_FUNC(ha->pdev->devfn);
7477
7478         pci_enable_pcie_error_reporting(pdev);
7479
7480         /* Setup Runtime configurable options */
7481         if (is_qla8022(ha)) {
7482                 ha->isp_ops = &qla4_82xx_isp_ops;
7483                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
7484                 ha->qdr_sn_window = -1;
7485                 ha->ddr_mn_window = -1;
7486                 ha->curr_window = 255;
7487                 nx_legacy_intr = &legacy_intr[ha->func_num];
7488                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
7489                 ha->nx_legacy_intr.tgt_status_reg =
7490                         nx_legacy_intr->tgt_status_reg;
7491                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
7492                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
7493         } else if (is_qla8032(ha) || is_qla8042(ha)) {
7494                 ha->isp_ops = &qla4_83xx_isp_ops;
7495                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
7496         } else {
7497                 ha->isp_ops = &qla4xxx_isp_ops;
7498         }
7499
7500         if (is_qla80XX(ha)) {
7501                 rwlock_init(&ha->hw_lock);
7502                 ha->pf_bit = ha->func_num << 16;
7503                 /* Set EEH reset type to fundamental if required by hba */
7504                 pdev->needs_freset = 1;
7505         }
7506
7507         /* Configure PCI I/O space. */
7508         ret = ha->isp_ops->iospace_config(ha);
7509         if (ret)
7510                 goto probe_failed_ioconfig;
7511
7512         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
7513                    pdev->device, pdev->irq, ha->reg);
7514
7515         qla4xxx_config_dma_addressing(ha);
7516
7517         /* Initialize lists and spinlocks. */
7518         INIT_LIST_HEAD(&ha->free_srb_q);
7519
7520         mutex_init(&ha->mbox_sem);
7521         mutex_init(&ha->chap_sem);
7522         init_completion(&ha->mbx_intr_comp);
7523         init_completion(&ha->disable_acb_comp);
7524
7525         spin_lock_init(&ha->hardware_lock);
7526         spin_lock_init(&ha->work_lock);
7527
7528         /* Initialize work list */
7529         INIT_LIST_HEAD(&ha->work_list);
7530
7531         /* Allocate dma buffers */
7532         if (qla4xxx_mem_alloc(ha)) {
7533                 ql4_printk(KERN_WARNING, ha,
7534                     "[ERROR] Failed to allocate memory for adapter\n");
7535
7536                 ret = -ENOMEM;
7537                 goto probe_failed;
7538         }
7539
7540         host->cmd_per_lun = 3;
7541         host->max_channel = 0;
7542         host->max_lun = MAX_LUNS - 1;
7543         host->max_id = MAX_TARGETS;
7544         host->max_cmd_len = IOCB_MAX_CDB_LEN;
7545         host->can_queue = MAX_SRBS ;
7546         host->transportt = qla4xxx_scsi_transport;
7547
7548         ret = scsi_init_shared_tag_map(host, MAX_SRBS);
7549         if (ret) {
7550                 ql4_printk(KERN_WARNING, ha,
7551                            "%s: scsi_init_shared_tag_map failed\n", __func__);
7552                 goto probe_failed;
7553         }
7554
7555         pci_set_drvdata(pdev, ha);
7556
7557         ret = scsi_add_host(host, &pdev->dev);
7558         if (ret)
7559                 goto probe_failed;
7560
7561         if (is_qla80XX(ha))
7562                 qla4_8xxx_get_flash_info(ha);
7563
7564         if (is_qla8032(ha) || is_qla8042(ha)) {
7565                 qla4_83xx_read_reset_template(ha);
7566                 /*
7567                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
7568                  * If DONRESET_BIT0 is set, drivers should not set dev_state
7569                  * to NEED_RESET. But if NEED_RESET is set, drivers should
7570                  * should honor the reset.
7571                  */
7572                 if (ql4xdontresethba == 1)
7573                         qla4_83xx_set_idc_dontreset(ha);
7574         }
7575
7576         /*
7577          * Initialize the Host adapter request/response queues and
7578          * firmware
7579          * NOTE: interrupts enabled upon successful completion
7580          */
7581         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
7582
7583         /* Dont retry adapter initialization if IRQ allocation failed */
7584         if (is_qla80XX(ha) && !test_bit(AF_IRQ_ATTACHED, &ha->flags)) {
7585                 ql4_printk(KERN_WARNING, ha, "%s: Skipping retry of adapter initialization\n",
7586                            __func__);
7587                 goto skip_retry_init;
7588         }
7589
7590         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
7591             init_retry_count++ < MAX_INIT_RETRIES) {
7592
7593                 if (is_qla80XX(ha)) {
7594                         ha->isp_ops->idc_lock(ha);
7595                         dev_state = qla4_8xxx_rd_direct(ha,
7596                                                         QLA8XXX_CRB_DEV_STATE);
7597                         ha->isp_ops->idc_unlock(ha);
7598                         if (dev_state == QLA8XXX_DEV_FAILED) {
7599                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
7600                                     "initialize adapter. H/W is in failed state\n",
7601                                     __func__);
7602                                 break;
7603                         }
7604                 }
7605                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
7606                               "(%d)\n", __func__, init_retry_count));
7607
7608                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
7609                         continue;
7610
7611                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
7612         }
7613
7614 skip_retry_init:
7615         if (!test_bit(AF_ONLINE, &ha->flags)) {
7616                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
7617
7618                 if ((is_qla8022(ha) && ql4xdontresethba) ||
7619                     ((is_qla8032(ha) || is_qla8042(ha)) &&
7620                      qla4_83xx_idc_dontreset(ha))) {
7621                         /* Put the device in failed state. */
7622                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
7623                         ha->isp_ops->idc_lock(ha);
7624                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7625                                             QLA8XXX_DEV_FAILED);
7626                         ha->isp_ops->idc_unlock(ha);
7627                 }
7628                 ret = -ENODEV;
7629                 goto remove_host;
7630         }
7631
7632         /* Startup the kernel thread for this host adapter. */
7633         DEBUG2(printk("scsi: %s: Starting kernel thread for "
7634                       "qla4xxx_dpc\n", __func__));
7635         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
7636         ha->dpc_thread = create_singlethread_workqueue(buf);
7637         if (!ha->dpc_thread) {
7638                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
7639                 ret = -ENODEV;
7640                 goto remove_host;
7641         }
7642         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
7643
7644         ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
7645                                       ha->host_no);
7646         if (!ha->task_wq) {
7647                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
7648                 ret = -ENODEV;
7649                 goto remove_host;
7650         }
7651
7652         /*
7653          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
7654          * (which is called indirectly by qla4xxx_initialize_adapter),
7655          * so that irqs will be registered after crbinit but before
7656          * mbx_intr_enable.
7657          */
7658         if (is_qla40XX(ha)) {
7659                 ret = qla4xxx_request_irqs(ha);
7660                 if (ret) {
7661                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
7662                             "interrupt %d already in use.\n", pdev->irq);
7663                         goto remove_host;
7664                 }
7665         }
7666
7667         pci_save_state(ha->pdev);
7668         ha->isp_ops->enable_intrs(ha);
7669
7670         /* Start timer thread. */
7671         qla4xxx_start_timer(ha, qla4xxx_timer, 1);
7672
7673         set_bit(AF_INIT_DONE, &ha->flags);
7674
7675         qla4_8xxx_alloc_sysfs_attr(ha);
7676
7677         printk(KERN_INFO
7678                " QLogic iSCSI HBA Driver version: %s\n"
7679                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
7680                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
7681                ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
7682                ha->fw_info.fw_patch, ha->fw_info.fw_build);
7683
7684         /* Set the driver version */
7685         if (is_qla80XX(ha))
7686                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
7687
7688         if (qla4xxx_setup_boot_info(ha))
7689                 ql4_printk(KERN_ERR, ha,
7690                            "%s: No iSCSI boot target configured\n", __func__);
7691
7692         if (qla4xxx_sysfs_ddb_export(ha))
7693                 ql4_printk(KERN_ERR, ha,
7694                            "%s: Error exporting ddb to sysfs\n", __func__);
7695
7696                 /* Perform the build ddb list and login to each */
7697         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
7698         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
7699         qla4xxx_wait_login_resp_boot_tgt(ha);
7700
7701         qla4xxx_create_chap_list(ha);
7702
7703         qla4xxx_create_ifaces(ha);
7704         return 0;
7705
7706 remove_host:
7707         scsi_remove_host(ha->host);
7708
7709 probe_failed:
7710         qla4xxx_free_adapter(ha);
7711
7712 probe_failed_ioconfig:
7713         pci_disable_pcie_error_reporting(pdev);
7714         scsi_host_put(ha->host);
7715
7716 probe_disable_device:
7717         pci_disable_device(pdev);
7718
7719         return ret;
7720 }
7721
7722 /**
7723  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
7724  * @ha: pointer to adapter structure
7725  *
7726  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
7727  * so that the other port will not re-initialize while in the process of
7728  * removing the ha due to driver unload or hba hotplug.
7729  **/
7730 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
7731 {
7732         struct scsi_qla_host *other_ha = NULL;
7733         struct pci_dev *other_pdev = NULL;
7734         int fn = ISP4XXX_PCI_FN_2;
7735
7736         /*iscsi function numbers for ISP4xxx is 1 and 3*/
7737         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
7738                 fn = ISP4XXX_PCI_FN_1;
7739
7740         other_pdev =
7741                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
7742                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
7743                 fn));
7744
7745         /* Get other_ha if other_pdev is valid and state is enable*/
7746         if (other_pdev) {
7747                 if (atomic_read(&other_pdev->enable_cnt)) {
7748                         other_ha = pci_get_drvdata(other_pdev);
7749                         if (other_ha) {
7750                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
7751                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
7752                                     "Prevent %s reinit\n", __func__,
7753                                     dev_name(&other_ha->pdev->dev)));
7754                         }
7755                 }
7756                 pci_dev_put(other_pdev);
7757         }
7758 }
7759
7760 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
7761 {
7762         struct ddb_entry *ddb_entry;
7763         int options;
7764         int idx;
7765
7766         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7767
7768                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7769                 if ((ddb_entry != NULL) &&
7770                     (ddb_entry->ddb_type == FLASH_DDB)) {
7771
7772                         options = LOGOUT_OPTION_CLOSE_SESSION;
7773                         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
7774                             == QLA_ERROR)
7775                                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
7776                                            __func__);
7777
7778                         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7779                         /*
7780                          * we have decremented the reference count of the driver
7781                          * when we setup the session to have the driver unload
7782                          * to be seamless without actually destroying the
7783                          * session
7784                          **/
7785                         try_module_get(qla4xxx_iscsi_transport.owner);
7786                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
7787                         qla4xxx_free_ddb(ha, ddb_entry);
7788                         iscsi_session_teardown(ddb_entry->sess);
7789                 }
7790         }
7791 }
7792 /**
7793  * qla4xxx_remove_adapter - callback function to remove adapter.
7794  * @pci_dev: PCI device pointer
7795  **/
7796 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
7797 {
7798         struct scsi_qla_host *ha;
7799
7800         /*
7801          * If the PCI device is disabled then it means probe_adapter had
7802          * failed and resources already cleaned up on probe_adapter exit.
7803          */
7804         if (!pci_is_enabled(pdev))
7805                 return;
7806
7807         ha = pci_get_drvdata(pdev);
7808
7809         if (is_qla40XX(ha))
7810                 qla4xxx_prevent_other_port_reinit(ha);
7811
7812         /* destroy iface from sysfs */
7813         qla4xxx_destroy_ifaces(ha);
7814
7815         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
7816                 iscsi_boot_destroy_kset(ha->boot_kset);
7817
7818         qla4xxx_destroy_fw_ddb_session(ha);
7819         qla4_8xxx_free_sysfs_attr(ha);
7820
7821         qla4xxx_sysfs_ddb_remove(ha);
7822         scsi_remove_host(ha->host);
7823
7824         qla4xxx_free_adapter(ha);
7825
7826         scsi_host_put(ha->host);
7827
7828         pci_disable_pcie_error_reporting(pdev);
7829         pci_disable_device(pdev);
7830 }
7831
7832 /**
7833  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
7834  * @ha: HA context
7835  *
7836  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
7837  * supported addressing method.
7838  */
7839 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
7840 {
7841         int retval;
7842
7843         /* Update our PCI device dma_mask for full 64 bit mask */
7844         if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
7845                 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
7846                         dev_dbg(&ha->pdev->dev,
7847                                   "Failed to set 64 bit PCI consistent mask; "
7848                                    "using 32 bit.\n");
7849                         retval = pci_set_consistent_dma_mask(ha->pdev,
7850                                                              DMA_BIT_MASK(32));
7851                 }
7852         } else
7853                 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
7854 }
7855
7856 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
7857 {
7858         struct iscsi_cls_session *cls_sess;
7859         struct iscsi_session *sess;
7860         struct ddb_entry *ddb;
7861         int queue_depth = QL4_DEF_QDEPTH;
7862
7863         cls_sess = starget_to_session(sdev->sdev_target);
7864         sess = cls_sess->dd_data;
7865         ddb = sess->dd_data;
7866
7867         sdev->hostdata = ddb;
7868         sdev->tagged_supported = 1;
7869
7870         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
7871                 queue_depth = ql4xmaxqdepth;
7872
7873         scsi_activate_tcq(sdev, queue_depth);
7874         return 0;
7875 }
7876
7877 static int qla4xxx_slave_configure(struct scsi_device *sdev)
7878 {
7879         sdev->tagged_supported = 1;
7880         return 0;
7881 }
7882
7883 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
7884 {
7885         scsi_deactivate_tcq(sdev, 1);
7886 }
7887
7888 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
7889                                       int reason)
7890 {
7891         if (!ql4xqfulltracking)
7892                 return -EOPNOTSUPP;
7893
7894         return iscsi_change_queue_depth(sdev, qdepth, reason);
7895 }
7896
7897 /**
7898  * qla4xxx_del_from_active_array - returns an active srb
7899  * @ha: Pointer to host adapter structure.
7900  * @index: index into the active_array
7901  *
7902  * This routine removes and returns the srb at the specified index
7903  **/
7904 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
7905     uint32_t index)
7906 {
7907         struct srb *srb = NULL;
7908         struct scsi_cmnd *cmd = NULL;
7909
7910         cmd = scsi_host_find_tag(ha->host, index);
7911         if (!cmd)
7912                 return srb;
7913
7914         srb = (struct srb *)CMD_SP(cmd);
7915         if (!srb)
7916                 return srb;
7917
7918         /* update counters */
7919         if (srb->flags & SRB_DMA_VALID) {
7920                 ha->iocb_cnt -= srb->iocb_cnt;
7921                 if (srb->cmd)
7922                         srb->cmd->host_scribble =
7923                                 (unsigned char *)(unsigned long) MAX_SRBS;
7924         }
7925         return srb;
7926 }
7927
7928 /**
7929  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
7930  * @ha: Pointer to host adapter structure.
7931  * @cmd: Scsi Command to wait on.
7932  *
7933  * This routine waits for the command to be returned by the Firmware
7934  * for some max time.
7935  **/
7936 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
7937                                       struct scsi_cmnd *cmd)
7938 {
7939         int done = 0;
7940         struct srb *rp;
7941         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
7942         int ret = SUCCESS;
7943
7944         /* Dont wait on command if PCI error is being handled
7945          * by PCI AER driver
7946          */
7947         if (unlikely(pci_channel_offline(ha->pdev)) ||
7948             (test_bit(AF_EEH_BUSY, &ha->flags))) {
7949                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
7950                     ha->host_no, __func__);
7951                 return ret;
7952         }
7953
7954         do {
7955                 /* Checking to see if its returned to OS */
7956                 rp = (struct srb *) CMD_SP(cmd);
7957                 if (rp == NULL) {
7958                         done++;
7959                         break;
7960                 }
7961
7962                 msleep(2000);
7963         } while (max_wait_time--);
7964
7965         return done;
7966 }
7967
7968 /**
7969  * qla4xxx_wait_for_hba_online - waits for HBA to come online
7970  * @ha: Pointer to host adapter structure
7971  **/
7972 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
7973 {
7974         unsigned long wait_online;
7975
7976         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
7977         while (time_before(jiffies, wait_online)) {
7978
7979                 if (adapter_up(ha))
7980                         return QLA_SUCCESS;
7981
7982                 msleep(2000);
7983         }
7984
7985         return QLA_ERROR;
7986 }
7987
7988 /**
7989  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
7990  * @ha: pointer to HBA
7991  * @t: target id
7992  * @l: lun id
7993  *
7994  * This function waits for all outstanding commands to a lun to complete. It
7995  * returns 0 if all pending commands are returned and 1 otherwise.
7996  **/
7997 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
7998                                         struct scsi_target *stgt,
7999                                         struct scsi_device *sdev)
8000 {
8001         int cnt;
8002         int status = 0;
8003         struct scsi_cmnd *cmd;
8004
8005         /*
8006          * Waiting for all commands for the designated target or dev
8007          * in the active array
8008          */
8009         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
8010                 cmd = scsi_host_find_tag(ha->host, cnt);
8011                 if (cmd && stgt == scsi_target(cmd->device) &&
8012                     (!sdev || sdev == cmd->device)) {
8013                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
8014                                 status++;
8015                                 break;
8016                         }
8017                 }
8018         }
8019         return status;
8020 }
8021
8022 /**
8023  * qla4xxx_eh_abort - callback for abort task.
8024  * @cmd: Pointer to Linux's SCSI command structure
8025  *
8026  * This routine is called by the Linux OS to abort the specified
8027  * command.
8028  **/
8029 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
8030 {
8031         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
8032         unsigned int id = cmd->device->id;
8033         unsigned int lun = cmd->device->lun;
8034         unsigned long flags;
8035         struct srb *srb = NULL;
8036         int ret = SUCCESS;
8037         int wait = 0;
8038
8039         ql4_printk(KERN_INFO, ha,
8040             "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
8041             ha->host_no, id, lun, cmd);
8042
8043         spin_lock_irqsave(&ha->hardware_lock, flags);
8044         srb = (struct srb *) CMD_SP(cmd);
8045         if (!srb) {
8046                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
8047                 return SUCCESS;
8048         }
8049         kref_get(&srb->srb_ref);
8050         spin_unlock_irqrestore(&ha->hardware_lock, flags);
8051
8052         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
8053                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
8054                     ha->host_no, id, lun));
8055                 ret = FAILED;
8056         } else {
8057                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
8058                     ha->host_no, id, lun));
8059                 wait = 1;
8060         }
8061
8062         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
8063
8064         /* Wait for command to complete */
8065         if (wait) {
8066                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
8067                         DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
8068                             ha->host_no, id, lun));
8069                         ret = FAILED;
8070                 }
8071         }
8072
8073         ql4_printk(KERN_INFO, ha,
8074             "scsi%ld:%d:%d: Abort command - %s\n",
8075             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
8076
8077         return ret;
8078 }
8079
8080 /**
8081  * qla4xxx_eh_device_reset - callback for target reset.
8082  * @cmd: Pointer to Linux's SCSI command structure
8083  *
8084  * This routine is called by the Linux OS to reset all luns on the
8085  * specified target.
8086  **/
8087 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
8088 {
8089         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
8090         struct ddb_entry *ddb_entry = cmd->device->hostdata;
8091         int ret = FAILED, stat;
8092
8093         if (!ddb_entry)
8094                 return ret;
8095
8096         ret = iscsi_block_scsi_eh(cmd);
8097         if (ret)
8098                 return ret;
8099         ret = FAILED;
8100
8101         ql4_printk(KERN_INFO, ha,
8102                    "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
8103                    cmd->device->channel, cmd->device->id, cmd->device->lun);
8104
8105         DEBUG2(printk(KERN_INFO
8106                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
8107                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
8108                       cmd, jiffies, cmd->request->timeout / HZ,
8109                       ha->dpc_flags, cmd->result, cmd->allowed));
8110
8111         /* FIXME: wait for hba to go online */
8112         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
8113         if (stat != QLA_SUCCESS) {
8114                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
8115                 goto eh_dev_reset_done;
8116         }
8117
8118         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
8119                                          cmd->device)) {
8120                 ql4_printk(KERN_INFO, ha,
8121                            "DEVICE RESET FAILED - waiting for "
8122                            "commands.\n");
8123                 goto eh_dev_reset_done;
8124         }
8125
8126         /* Send marker. */
8127         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
8128                 MM_LUN_RESET) != QLA_SUCCESS)
8129                 goto eh_dev_reset_done;
8130
8131         ql4_printk(KERN_INFO, ha,
8132                    "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
8133                    ha->host_no, cmd->device->channel, cmd->device->id,
8134                    cmd->device->lun);
8135
8136         ret = SUCCESS;
8137
8138 eh_dev_reset_done:
8139
8140         return ret;
8141 }
8142
8143 /**
8144  * qla4xxx_eh_target_reset - callback for target reset.
8145  * @cmd: Pointer to Linux's SCSI command structure
8146  *
8147  * This routine is called by the Linux OS to reset the target.
8148  **/
8149 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
8150 {
8151         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
8152         struct ddb_entry *ddb_entry = cmd->device->hostdata;
8153         int stat, ret;
8154
8155         if (!ddb_entry)
8156                 return FAILED;
8157
8158         ret = iscsi_block_scsi_eh(cmd);
8159         if (ret)
8160                 return ret;
8161
8162         starget_printk(KERN_INFO, scsi_target(cmd->device),
8163                        "WARM TARGET RESET ISSUED.\n");
8164
8165         DEBUG2(printk(KERN_INFO
8166                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
8167                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
8168                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
8169                       ha->dpc_flags, cmd->result, cmd->allowed));
8170
8171         stat = qla4xxx_reset_target(ha, ddb_entry);
8172         if (stat != QLA_SUCCESS) {
8173                 starget_printk(KERN_INFO, scsi_target(cmd->device),
8174                                "WARM TARGET RESET FAILED.\n");
8175                 return FAILED;
8176         }
8177
8178         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
8179                                          NULL)) {
8180                 starget_printk(KERN_INFO, scsi_target(cmd->device),
8181                                "WARM TARGET DEVICE RESET FAILED - "
8182                                "waiting for commands.\n");
8183                 return FAILED;
8184         }
8185
8186         /* Send marker. */
8187         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
8188                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
8189                 starget_printk(KERN_INFO, scsi_target(cmd->device),
8190                                "WARM TARGET DEVICE RESET FAILED - "
8191                                "marker iocb failed.\n");
8192                 return FAILED;
8193         }
8194
8195         starget_printk(KERN_INFO, scsi_target(cmd->device),
8196                        "WARM TARGET RESET SUCCEEDED.\n");
8197         return SUCCESS;
8198 }
8199
8200 /**
8201  * qla4xxx_is_eh_active - check if error handler is running
8202  * @shost: Pointer to SCSI Host struct
8203  *
8204  * This routine finds that if reset host is called in EH
8205  * scenario or from some application like sg_reset
8206  **/
8207 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
8208 {
8209         if (shost->shost_state == SHOST_RECOVERY)
8210                 return 1;
8211         return 0;
8212 }
8213
8214 /**
8215  * qla4xxx_eh_host_reset - kernel callback
8216  * @cmd: Pointer to Linux's SCSI command structure
8217  *
8218  * This routine is invoked by the Linux kernel to perform fatal error
8219  * recovery on the specified adapter.
8220  **/
8221 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
8222 {
8223         int return_status = FAILED;
8224         struct scsi_qla_host *ha;
8225
8226         ha = to_qla_host(cmd->device->host);
8227
8228         if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
8229                 qla4_83xx_set_idc_dontreset(ha);
8230
8231         /*
8232          * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
8233          * protocol drivers, we should not set device_state to NEED_RESET
8234          */
8235         if (ql4xdontresethba ||
8236             ((is_qla8032(ha) || is_qla8042(ha)) &&
8237              qla4_83xx_idc_dontreset(ha))) {
8238                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
8239                      ha->host_no, __func__));
8240
8241                 /* Clear outstanding srb in queues */
8242                 if (qla4xxx_is_eh_active(cmd->device->host))
8243                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
8244
8245                 return FAILED;
8246         }
8247
8248         ql4_printk(KERN_INFO, ha,
8249                    "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
8250                    cmd->device->channel, cmd->device->id, cmd->device->lun);
8251
8252         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
8253                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
8254                               "DEAD.\n", ha->host_no, cmd->device->channel,
8255                               __func__));
8256
8257                 return FAILED;
8258         }
8259
8260         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
8261                 if (is_qla80XX(ha))
8262                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
8263                 else
8264                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
8265         }
8266
8267         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
8268                 return_status = SUCCESS;
8269
8270         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
8271                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
8272
8273         return return_status;
8274 }
8275
8276 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
8277 {
8278         uint32_t mbox_cmd[MBOX_REG_COUNT];
8279         uint32_t mbox_sts[MBOX_REG_COUNT];
8280         struct addr_ctrl_blk_def *acb = NULL;
8281         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
8282         int rval = QLA_SUCCESS;
8283         dma_addr_t acb_dma;
8284
8285         acb = dma_alloc_coherent(&ha->pdev->dev,
8286                                  sizeof(struct addr_ctrl_blk_def),
8287                                  &acb_dma, GFP_KERNEL);
8288         if (!acb) {
8289                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
8290                            __func__);
8291                 rval = -ENOMEM;
8292                 goto exit_port_reset;
8293         }
8294
8295         memset(acb, 0, acb_len);
8296
8297         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
8298         if (rval != QLA_SUCCESS) {
8299                 rval = -EIO;
8300                 goto exit_free_acb;
8301         }
8302
8303         rval = qla4xxx_disable_acb(ha);
8304         if (rval != QLA_SUCCESS) {
8305                 rval = -EIO;
8306                 goto exit_free_acb;
8307         }
8308
8309         wait_for_completion_timeout(&ha->disable_acb_comp,
8310                                     DISABLE_ACB_TOV * HZ);
8311
8312         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
8313         if (rval != QLA_SUCCESS) {
8314                 rval = -EIO;
8315                 goto exit_free_acb;
8316         }
8317
8318 exit_free_acb:
8319         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
8320                           acb, acb_dma);
8321 exit_port_reset:
8322         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
8323                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
8324         return rval;
8325 }
8326
8327 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
8328 {
8329         struct scsi_qla_host *ha = to_qla_host(shost);
8330         int rval = QLA_SUCCESS;
8331         uint32_t idc_ctrl;
8332
8333         if (ql4xdontresethba) {
8334                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
8335                                   __func__));
8336                 rval = -EPERM;
8337                 goto exit_host_reset;
8338         }
8339
8340         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
8341                 goto recover_adapter;
8342
8343         switch (reset_type) {
8344         case SCSI_ADAPTER_RESET:
8345                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
8346                 break;
8347         case SCSI_FIRMWARE_RESET:
8348                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
8349                         if (is_qla80XX(ha))
8350                                 /* set firmware context reset */
8351                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
8352                                         &ha->dpc_flags);
8353                         else {
8354                                 rval = qla4xxx_context_reset(ha);
8355                                 goto exit_host_reset;
8356                         }
8357                 }
8358                 break;
8359         }
8360
8361 recover_adapter:
8362         /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
8363          * reset is issued by application */
8364         if ((is_qla8032(ha) || is_qla8042(ha)) &&
8365             test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
8366                 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
8367                 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
8368                                  (idc_ctrl | GRACEFUL_RESET_BIT1));
8369         }
8370
8371         rval = qla4xxx_recover_adapter(ha);
8372         if (rval != QLA_SUCCESS) {
8373                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
8374                                   __func__));
8375                 rval = -EIO;
8376         }
8377
8378 exit_host_reset:
8379         return rval;
8380 }
8381
8382 /* PCI AER driver recovers from all correctable errors w/o
8383  * driver intervention. For uncorrectable errors PCI AER
8384  * driver calls the following device driver's callbacks
8385  *
8386  * - Fatal Errors - link_reset
8387  * - Non-Fatal Errors - driver's pci_error_detected() which
8388  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
8389  *
8390  * PCI AER driver calls
8391  * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
8392  *               returns RECOVERED or NEED_RESET if fw_hung
8393  * NEED_RESET - driver's slot_reset()
8394  * DISCONNECT - device is dead & cannot recover
8395  * RECOVERED - driver's pci_resume()
8396  */
8397 static pci_ers_result_t
8398 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
8399 {
8400         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
8401
8402         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
8403             ha->host_no, __func__, state);
8404
8405         if (!is_aer_supported(ha))
8406                 return PCI_ERS_RESULT_NONE;
8407
8408         switch (state) {
8409         case pci_channel_io_normal:
8410                 clear_bit(AF_EEH_BUSY, &ha->flags);
8411                 return PCI_ERS_RESULT_CAN_RECOVER;
8412         case pci_channel_io_frozen:
8413                 set_bit(AF_EEH_BUSY, &ha->flags);
8414                 qla4xxx_mailbox_premature_completion(ha);
8415                 qla4xxx_free_irqs(ha);
8416                 pci_disable_device(pdev);
8417                 /* Return back all IOs */
8418                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
8419                 return PCI_ERS_RESULT_NEED_RESET;
8420         case pci_channel_io_perm_failure:
8421                 set_bit(AF_EEH_BUSY, &ha->flags);
8422                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
8423                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
8424                 return PCI_ERS_RESULT_DISCONNECT;
8425         }
8426         return PCI_ERS_RESULT_NEED_RESET;
8427 }
8428
8429 /**
8430  * qla4xxx_pci_mmio_enabled() gets called if
8431  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
8432  * and read/write to the device still works.
8433  **/
8434 static pci_ers_result_t
8435 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
8436 {
8437         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
8438
8439         if (!is_aer_supported(ha))
8440                 return PCI_ERS_RESULT_NONE;
8441
8442         return PCI_ERS_RESULT_RECOVERED;
8443 }
8444
8445 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
8446 {
8447         uint32_t rval = QLA_ERROR;
8448         int fn;
8449         struct pci_dev *other_pdev = NULL;
8450
8451         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
8452
8453         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
8454
8455         if (test_bit(AF_ONLINE, &ha->flags)) {
8456                 clear_bit(AF_ONLINE, &ha->flags);
8457                 clear_bit(AF_LINK_UP, &ha->flags);
8458                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
8459                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
8460         }
8461
8462         fn = PCI_FUNC(ha->pdev->devfn);
8463         while (fn > 0) {
8464                 fn--;
8465                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
8466                     "func %x\n", ha->host_no, __func__, fn);
8467                 /* Get the pci device given the domain, bus,
8468                  * slot/function number */
8469                 other_pdev =
8470                     pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8471                     ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8472                     fn));
8473
8474                 if (!other_pdev)
8475                         continue;
8476
8477                 if (atomic_read(&other_pdev->enable_cnt)) {
8478                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
8479                             "func in enabled state%x\n", ha->host_no,
8480                             __func__, fn);
8481                         pci_dev_put(other_pdev);
8482                         break;
8483                 }
8484                 pci_dev_put(other_pdev);
8485         }
8486
8487         /* The first function on the card, the reset owner will
8488          * start & initialize the firmware. The other functions
8489          * on the card will reset the firmware context
8490          */
8491         if (!fn) {
8492                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
8493                     "0x%x is the owner\n", ha->host_no, __func__,
8494                     ha->pdev->devfn);
8495
8496                 ha->isp_ops->idc_lock(ha);
8497                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8498                                     QLA8XXX_DEV_COLD);
8499                 ha->isp_ops->idc_unlock(ha);
8500
8501                 rval = qla4_8xxx_update_idc_reg(ha);
8502                 if (rval == QLA_ERROR) {
8503                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
8504                                    ha->host_no, __func__);
8505                         ha->isp_ops->idc_lock(ha);
8506                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8507                                             QLA8XXX_DEV_FAILED);
8508                         ha->isp_ops->idc_unlock(ha);
8509                         goto exit_error_recovery;
8510                 }
8511
8512                 clear_bit(AF_FW_RECOVERY, &ha->flags);
8513                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
8514
8515                 if (rval != QLA_SUCCESS) {
8516                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
8517                             "FAILED\n", ha->host_no, __func__);
8518                         ha->isp_ops->idc_lock(ha);
8519                         qla4_8xxx_clear_drv_active(ha);
8520                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8521                                             QLA8XXX_DEV_FAILED);
8522                         ha->isp_ops->idc_unlock(ha);
8523                 } else {
8524                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
8525                             "READY\n", ha->host_no, __func__);
8526                         ha->isp_ops->idc_lock(ha);
8527                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8528                                             QLA8XXX_DEV_READY);
8529                         /* Clear driver state register */
8530                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
8531                         qla4_8xxx_set_drv_active(ha);
8532                         ha->isp_ops->idc_unlock(ha);
8533                         ha->isp_ops->enable_intrs(ha);
8534                 }
8535         } else {
8536                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
8537                     "the reset owner\n", ha->host_no, __func__,
8538                     ha->pdev->devfn);
8539                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
8540                      QLA8XXX_DEV_READY)) {
8541                         clear_bit(AF_FW_RECOVERY, &ha->flags);
8542                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
8543                         if (rval == QLA_SUCCESS)
8544                                 ha->isp_ops->enable_intrs(ha);
8545
8546                         ha->isp_ops->idc_lock(ha);
8547                         qla4_8xxx_set_drv_active(ha);
8548                         ha->isp_ops->idc_unlock(ha);
8549                 }
8550         }
8551 exit_error_recovery:
8552         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
8553         return rval;
8554 }
8555
8556 static pci_ers_result_t
8557 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
8558 {
8559         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
8560         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
8561         int rc;
8562
8563         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
8564             ha->host_no, __func__);
8565
8566         if (!is_aer_supported(ha))
8567                 return PCI_ERS_RESULT_NONE;
8568
8569         /* Restore the saved state of PCIe device -
8570          * BAR registers, PCI Config space, PCIX, MSI,
8571          * IOV states
8572          */
8573         pci_restore_state(pdev);
8574
8575         /* pci_restore_state() clears the saved_state flag of the device
8576          * save restored state which resets saved_state flag
8577          */
8578         pci_save_state(pdev);
8579
8580         /* Initialize device or resume if in suspended state */
8581         rc = pci_enable_device(pdev);
8582         if (rc) {
8583                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
8584                     "device after reset\n", ha->host_no, __func__);
8585                 goto exit_slot_reset;
8586         }
8587
8588         ha->isp_ops->disable_intrs(ha);
8589
8590         if (is_qla80XX(ha)) {
8591                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
8592                         ret = PCI_ERS_RESULT_RECOVERED;
8593                         goto exit_slot_reset;
8594                 } else
8595                         goto exit_slot_reset;
8596         }
8597
8598 exit_slot_reset:
8599         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
8600             "device after reset\n", ha->host_no, __func__, ret);
8601         return ret;
8602 }
8603
8604 static void
8605 qla4xxx_pci_resume(struct pci_dev *pdev)
8606 {
8607         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
8608         int ret;
8609
8610         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
8611             ha->host_no, __func__);
8612
8613         ret = qla4xxx_wait_for_hba_online(ha);
8614         if (ret != QLA_SUCCESS) {
8615                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
8616                     "resume I/O from slot/link_reset\n", ha->host_no,
8617                      __func__);
8618         }
8619
8620         pci_cleanup_aer_uncorrect_error_status(pdev);
8621         clear_bit(AF_EEH_BUSY, &ha->flags);
8622 }
8623
8624 static const struct pci_error_handlers qla4xxx_err_handler = {
8625         .error_detected = qla4xxx_pci_error_detected,
8626         .mmio_enabled = qla4xxx_pci_mmio_enabled,
8627         .slot_reset = qla4xxx_pci_slot_reset,
8628         .resume = qla4xxx_pci_resume,
8629 };
8630
8631 static struct pci_device_id qla4xxx_pci_tbl[] = {
8632         {
8633                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8634                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
8635                 .subvendor      = PCI_ANY_ID,
8636                 .subdevice      = PCI_ANY_ID,
8637         },
8638         {
8639                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8640                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
8641                 .subvendor      = PCI_ANY_ID,
8642                 .subdevice      = PCI_ANY_ID,
8643         },
8644         {
8645                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8646                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
8647                 .subvendor      = PCI_ANY_ID,
8648                 .subdevice      = PCI_ANY_ID,
8649         },
8650         {
8651                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8652                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
8653                 .subvendor      = PCI_ANY_ID,
8654                 .subdevice      = PCI_ANY_ID,
8655         },
8656         {
8657                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8658                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
8659                 .subvendor      = PCI_ANY_ID,
8660                 .subdevice      = PCI_ANY_ID,
8661         },
8662         {
8663                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8664                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8042,
8665                 .subvendor      = PCI_ANY_ID,
8666                 .subdevice      = PCI_ANY_ID,
8667         },
8668         {0, 0},
8669 };
8670 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
8671
8672 static struct pci_driver qla4xxx_pci_driver = {
8673         .name           = DRIVER_NAME,
8674         .id_table       = qla4xxx_pci_tbl,
8675         .probe          = qla4xxx_probe_adapter,
8676         .remove         = qla4xxx_remove_adapter,
8677         .err_handler = &qla4xxx_err_handler,
8678 };
8679
8680 static int __init qla4xxx_module_init(void)
8681 {
8682         int ret;
8683
8684         /* Allocate cache for SRBs. */
8685         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
8686                                        SLAB_HWCACHE_ALIGN, NULL);
8687         if (srb_cachep == NULL) {
8688                 printk(KERN_ERR
8689                        "%s: Unable to allocate SRB cache..."
8690                        "Failing load!\n", DRIVER_NAME);
8691                 ret = -ENOMEM;
8692                 goto no_srp_cache;
8693         }
8694
8695         /* Derive version string. */
8696         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
8697         if (ql4xextended_error_logging)
8698                 strcat(qla4xxx_version_str, "-debug");
8699
8700         qla4xxx_scsi_transport =
8701                 iscsi_register_transport(&qla4xxx_iscsi_transport);
8702         if (!qla4xxx_scsi_transport){
8703                 ret = -ENODEV;
8704                 goto release_srb_cache;
8705         }
8706
8707         ret = pci_register_driver(&qla4xxx_pci_driver);
8708         if (ret)
8709                 goto unregister_transport;
8710
8711         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
8712         return 0;
8713
8714 unregister_transport:
8715         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
8716 release_srb_cache:
8717         kmem_cache_destroy(srb_cachep);
8718 no_srp_cache:
8719         return ret;
8720 }
8721
8722 static void __exit qla4xxx_module_exit(void)
8723 {
8724         pci_unregister_driver(&qla4xxx_pci_driver);
8725         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
8726         kmem_cache_destroy(srb_cachep);
8727 }
8728
8729 module_init(qla4xxx_module_init);
8730 module_exit(qla4xxx_module_exit);
8731
8732 MODULE_AUTHOR("QLogic Corporation");
8733 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
8734 MODULE_LICENSE("GPL");
8735 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);