drivers/scsi/be2iscsi/be_main.c

   1 /**
   2  * Copyright (C) 2005 - 2015 Emulex
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Written by: Jayamohan Kallickal (jayamohan.kallickal@avagotech.com)
  11  *
  12  * Contact Information:
  13  * linux-drivers@avagotech.com
  14  *
  15  * Emulex
  16  * 3333 Susan Street
  17  * Costa Mesa, CA 92626
  18  */
  19
  20 #include <linux/reboot.h>
  21 #include <linux/delay.h>
  22 #include <linux/slab.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/blkdev.h>
  25 #include <linux/pci.h>
  26 #include <linux/string.h>
  27 #include <linux/kernel.h>
  28 #include <linux/semaphore.h>
  29 #include <linux/iscsi_boot_sysfs.h>
  30 #include <linux/module.h>
  31 #include <linux/bsg-lib.h>
  32 #include <linux/irq_poll.h>
  33
  34 #include <scsi/libiscsi.h>
  35 #include <scsi/scsi_bsg_iscsi.h>
  36 #include <scsi/scsi_netlink.h>
  37 #include <scsi/scsi_transport_iscsi.h>
  38 #include <scsi/scsi_transport.h>
  39 #include <scsi/scsi_cmnd.h>
  40 #include <scsi/scsi_device.h>
  41 #include <scsi/scsi_host.h>
  42 #include <scsi/scsi.h>
  43 #include "be_main.h"
  44 #include "be_iscsi.h"
  45 #include "be_mgmt.h"
  46 #include "be_cmds.h"
  47
  48 static unsigned int be_iopoll_budget = 10;
  49 static unsigned int be_max_phys_size = 64;
  50 static unsigned int enable_msix = 1;
  51
  52 MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR);
  53 MODULE_VERSION(BUILD_STR);
  54 MODULE_AUTHOR("Emulex Corporation");
  55 MODULE_LICENSE("GPL");
  56 module_param(be_iopoll_budget, int, 0);
  57 module_param(enable_msix, int, 0);
  58 module_param(be_max_phys_size, uint, S_IRUGO);
  59 MODULE_PARM_DESC(be_max_phys_size,
  60                 "Maximum Size (In Kilobytes) of physically contiguous "
  61                 "memory that can be allocated. Range is 16 - 128");
  62
  63 #define beiscsi_disp_param(_name)\
  64 ssize_t \
  65 beiscsi_##_name##_disp(struct device *dev,\
  66                         struct device_attribute *attrib, char *buf)     \
  67 {       \
  68         struct Scsi_Host *shost = class_to_shost(dev);\
  69         struct beiscsi_hba *phba = iscsi_host_priv(shost); \
  70         uint32_t param_val = 0; \
  71         param_val = phba->attr_##_name;\
  72         return snprintf(buf, PAGE_SIZE, "%d\n",\
  73                         phba->attr_##_name);\
  74 }
  75
  76 #define beiscsi_change_param(_name, _minval, _maxval, _defaval)\
  77 int \
  78 beiscsi_##_name##_change(struct beiscsi_hba *phba, uint32_t val)\
  79 {\
  80         if (val >= _minval && val <= _maxval) {\
  81                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\
  82                             "BA_%d : beiscsi_"#_name" updated "\
  83                             "from 0x%x ==> 0x%x\n",\
  84                             phba->attr_##_name, val); \
  85                 phba->attr_##_name = val;\
  86                 return 0;\
  87         } \
  88         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, \
  89                     "BA_%d beiscsi_"#_name" attribute "\
  90                     "cannot be updated to 0x%x, "\
  91                     "range allowed is ["#_minval" - "#_maxval"]\n", val);\
  92                 return -EINVAL;\
  93 }
  94
  95 #define beiscsi_store_param(_name)  \
  96 ssize_t \
  97 beiscsi_##_name##_store(struct device *dev,\
  98                          struct device_attribute *attr, const char *buf,\
  99                          size_t count) \
 100 { \
 101         struct Scsi_Host  *shost = class_to_shost(dev);\
 102         struct beiscsi_hba *phba = iscsi_host_priv(shost);\
 103         uint32_t param_val = 0;\
 104         if (!isdigit(buf[0]))\
 105                 return -EINVAL;\
 106         if (sscanf(buf, "%i", &param_val) != 1)\
 107                 return -EINVAL;\
 108         if (beiscsi_##_name##_change(phba, param_val) == 0) \
 109                 return strlen(buf);\
 110         else \
 111                 return -EINVAL;\
 112 }
 113
 114 #define beiscsi_init_param(_name, _minval, _maxval, _defval) \
 115 int \
 116 beiscsi_##_name##_init(struct beiscsi_hba *phba, uint32_t val) \
 117 { \
 118         if (val >= _minval && val <= _maxval) {\
 119                 phba->attr_##_name = val;\
 120                 return 0;\
 121         } \
 122         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,\
 123                     "BA_%d beiscsi_"#_name" attribute " \
 124                     "cannot be updated to 0x%x, "\
 125                     "range allowed is ["#_minval" - "#_maxval"]\n", val);\
 126         phba->attr_##_name = _defval;\
 127         return -EINVAL;\
 128 }
 129
 130 #define BEISCSI_RW_ATTR(_name, _minval, _maxval, _defval, _descp) \
 131 static uint beiscsi_##_name = _defval;\
 132 module_param(beiscsi_##_name, uint, S_IRUGO);\
 133 MODULE_PARM_DESC(beiscsi_##_name, _descp);\
 134 beiscsi_disp_param(_name)\
 135 beiscsi_change_param(_name, _minval, _maxval, _defval)\
 136 beiscsi_store_param(_name)\
 137 beiscsi_init_param(_name, _minval, _maxval, _defval)\
 138 DEVICE_ATTR(beiscsi_##_name, S_IRUGO | S_IWUSR,\
 139               beiscsi_##_name##_disp, beiscsi_##_name##_store)
 140
 141 /*
 142  * When new log level added update the
 143  * the MAX allowed value for log_enable
 144  */
 145 BEISCSI_RW_ATTR(log_enable, 0x00,
 146                 0xFF, 0x00, "Enable logging Bit Mask\n"
 147                 "\t\t\t\tInitialization Events  : 0x01\n"
 148                 "\t\t\t\tMailbox Events         : 0x02\n"
 149                 "\t\t\t\tMiscellaneous Events   : 0x04\n"
 150                 "\t\t\t\tError Handling         : 0x08\n"
 151                 "\t\t\t\tIO Path Events         : 0x10\n"
 152                 "\t\t\t\tConfiguration Path     : 0x20\n"
 153                 "\t\t\t\tiSCSI Protocol         : 0x40\n");
 154
 155 DEVICE_ATTR(beiscsi_drvr_ver, S_IRUGO, beiscsi_drvr_ver_disp, NULL);
 156 DEVICE_ATTR(beiscsi_adapter_family, S_IRUGO, beiscsi_adap_family_disp, NULL);
 157 DEVICE_ATTR(beiscsi_fw_ver, S_IRUGO, beiscsi_fw_ver_disp, NULL);
 158 DEVICE_ATTR(beiscsi_phys_port, S_IRUGO, beiscsi_phys_port_disp, NULL);
 159 DEVICE_ATTR(beiscsi_active_session_count, S_IRUGO,
 160              beiscsi_active_session_disp, NULL);
 161 DEVICE_ATTR(beiscsi_free_session_count, S_IRUGO,
 162              beiscsi_free_session_disp, NULL);
 163 struct device_attribute *beiscsi_attrs[] = {
 164         &dev_attr_beiscsi_log_enable,
 165         &dev_attr_beiscsi_drvr_ver,
 166         &dev_attr_beiscsi_adapter_family,
 167         &dev_attr_beiscsi_fw_ver,
 168         &dev_attr_beiscsi_active_session_count,
 169         &dev_attr_beiscsi_free_session_count,
 170         &dev_attr_beiscsi_phys_port,
 171         NULL,
 172 };
 173
 174 static char const *cqe_desc[] = {
 175         "RESERVED_DESC",
 176         "SOL_CMD_COMPLETE",
 177         "SOL_CMD_KILLED_DATA_DIGEST_ERR",
 178         "CXN_KILLED_PDU_SIZE_EXCEEDS_DSL",
 179         "CXN_KILLED_BURST_LEN_MISMATCH",
 180         "CXN_KILLED_AHS_RCVD",
 181         "CXN_KILLED_HDR_DIGEST_ERR",
 182         "CXN_KILLED_UNKNOWN_HDR",
 183         "CXN_KILLED_STALE_ITT_TTT_RCVD",
 184         "CXN_KILLED_INVALID_ITT_TTT_RCVD",
 185         "CXN_KILLED_RST_RCVD",
 186         "CXN_KILLED_TIMED_OUT",
 187         "CXN_KILLED_RST_SENT",
 188         "CXN_KILLED_FIN_RCVD",
 189         "CXN_KILLED_BAD_UNSOL_PDU_RCVD",
 190         "CXN_KILLED_BAD_WRB_INDEX_ERROR",
 191         "CXN_KILLED_OVER_RUN_RESIDUAL",
 192         "CXN_KILLED_UNDER_RUN_RESIDUAL",
 193         "CMD_KILLED_INVALID_STATSN_RCVD",
 194         "CMD_KILLED_INVALID_R2T_RCVD",
 195         "CMD_CXN_KILLED_LUN_INVALID",
 196         "CMD_CXN_KILLED_ICD_INVALID",
 197         "CMD_CXN_KILLED_ITT_INVALID",
 198         "CMD_CXN_KILLED_SEQ_OUTOFORDER",
 199         "CMD_CXN_KILLED_INVALID_DATASN_RCVD",
 200         "CXN_INVALIDATE_NOTIFY",
 201         "CXN_INVALIDATE_INDEX_NOTIFY",
 202         "CMD_INVALIDATED_NOTIFY",
 203         "UNSOL_HDR_NOTIFY",
 204         "UNSOL_DATA_NOTIFY",
 205         "UNSOL_DATA_DIGEST_ERROR_NOTIFY",
 206         "DRIVERMSG_NOTIFY",
 207         "CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN",
 208         "SOL_CMD_KILLED_DIF_ERR",
 209         "CXN_KILLED_SYN_RCVD",
 210         "CXN_KILLED_IMM_DATA_RCVD"
 211 };
 212
 213 static int beiscsi_slave_configure(struct scsi_device *sdev)
 214 {
 215         blk_queue_max_segment_size(sdev->request_queue, 65536);
 216         return 0;
 217 }
 218
 219 static int beiscsi_eh_abort(struct scsi_cmnd *sc)
 220 {
 221         struct iscsi_cls_session *cls_session;
 222         struct iscsi_task *aborted_task = (struct iscsi_task *)sc->SCp.ptr;
 223         struct beiscsi_io_task *aborted_io_task;
 224         struct iscsi_conn *conn;
 225         struct beiscsi_conn *beiscsi_conn;
 226         struct beiscsi_hba *phba;
 227         struct iscsi_session *session;
 228         struct invalidate_command_table *inv_tbl;
 229         struct be_dma_mem nonemb_cmd;
 230         unsigned int cid, tag, num_invalidate;
 231         int rc;
 232
 233         cls_session = starget_to_session(scsi_target(sc->device));
 234         session = cls_session->dd_data;
 235
 236         spin_lock_bh(&session->frwd_lock);
 237         if (!aborted_task || !aborted_task->sc) {
 238                 /* we raced */
 239                 spin_unlock_bh(&session->frwd_lock);
 240                 return SUCCESS;
 241         }
 242
 243         aborted_io_task = aborted_task->dd_data;
 244         if (!aborted_io_task->scsi_cmnd) {
 245                 /* raced or invalid command */
 246                 spin_unlock_bh(&session->frwd_lock);
 247                 return SUCCESS;
 248         }
 249         spin_unlock_bh(&session->frwd_lock);
 250         /* Invalidate WRB Posted for this Task */
 251         AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
 252                       aborted_io_task->pwrb_handle->pwrb,
 253                       1);
 254
 255         conn = aborted_task->conn;
 256         beiscsi_conn = conn->dd_data;
 257         phba = beiscsi_conn->phba;
 258
 259         /* invalidate iocb */
 260         cid = beiscsi_conn->beiscsi_conn_cid;
 261         inv_tbl = phba->inv_tbl;
 262         memset(inv_tbl, 0x0, sizeof(*inv_tbl));
 263         inv_tbl->cid = cid;
 264         inv_tbl->icd = aborted_io_task->psgl_handle->sgl_index;
 265         num_invalidate = 1;
 266         nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
 267                                 sizeof(struct invalidate_commands_params_in),
 268                                 &nonemb_cmd.dma);
 269         if (nonemb_cmd.va == NULL) {
 270                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
 271                             "BM_%d : Failed to allocate memory for"
 272                             "mgmt_invalidate_icds\n");
 273                 return FAILED;
 274         }
 275         nonemb_cmd.size = sizeof(struct invalidate_commands_params_in);
 276
 277         tag = mgmt_invalidate_icds(phba, inv_tbl, num_invalidate,
 278                                    cid, &nonemb_cmd);
 279         if (!tag) {
 280                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
 281                             "BM_%d : mgmt_invalidate_icds could not be"
 282                             "submitted\n");
 283                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
 284                                     nonemb_cmd.va, nonemb_cmd.dma);
 285
 286                 return FAILED;
 287         }
 288
 289         rc = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd);
 290         if (rc != -EBUSY)
 291                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
 292                                     nonemb_cmd.va, nonemb_cmd.dma);
 293
 294         return iscsi_eh_abort(sc);
 295 }
 296
 297 static int beiscsi_eh_device_reset(struct scsi_cmnd *sc)
 298 {
 299         struct iscsi_task *abrt_task;
 300         struct beiscsi_io_task *abrt_io_task;
 301         struct iscsi_conn *conn;
 302         struct beiscsi_conn *beiscsi_conn;
 303         struct beiscsi_hba *phba;
 304         struct iscsi_session *session;
 305         struct iscsi_cls_session *cls_session;
 306         struct invalidate_command_table *inv_tbl;
 307         struct be_dma_mem nonemb_cmd;
 308         unsigned int cid, tag, i, num_invalidate;
 309         int rc;
 310
 311         /* invalidate iocbs */
 312         cls_session = starget_to_session(scsi_target(sc->device));
 313         session = cls_session->dd_data;
 314         spin_lock_bh(&session->frwd_lock);
 315         if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN) {
 316                 spin_unlock_bh(&session->frwd_lock);
 317                 return FAILED;
 318         }
 319         conn = session->leadconn;
 320         beiscsi_conn = conn->dd_data;
 321         phba = beiscsi_conn->phba;
 322         cid = beiscsi_conn->beiscsi_conn_cid;
 323         inv_tbl = phba->inv_tbl;
 324         memset(inv_tbl, 0x0, sizeof(*inv_tbl) * BE2_CMDS_PER_CXN);
 325         num_invalidate = 0;
 326         for (i = 0; i < conn->session->cmds_max; i++) {
 327                 abrt_task = conn->session->cmds[i];
 328                 abrt_io_task = abrt_task->dd_data;
 329                 if (!abrt_task->sc || abrt_task->state == ISCSI_TASK_FREE)
 330                         continue;
 331
 332                 if (sc->device->lun != abrt_task->sc->device->lun)
 333                         continue;
 334
 335                 /* Invalidate WRB Posted for this Task */
 336                 AMAP_SET_BITS(struct amap_iscsi_wrb, invld,
 337                               abrt_io_task->pwrb_handle->pwrb,
 338                               1);
 339
 340                 inv_tbl->cid = cid;
 341                 inv_tbl->icd = abrt_io_task->psgl_handle->sgl_index;
 342                 num_invalidate++;
 343                 inv_tbl++;
 344         }
 345         spin_unlock_bh(&session->frwd_lock);
 346         inv_tbl = phba->inv_tbl;
 347
 348         nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
 349                                 sizeof(struct invalidate_commands_params_in),
 350                                 &nonemb_cmd.dma);
 351         if (nonemb_cmd.va == NULL) {
 352                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_EH,
 353                             "BM_%d : Failed to allocate memory for"
 354                             "mgmt_invalidate_icds\n");
 355                 return FAILED;
 356         }
 357         nonemb_cmd.size = sizeof(struct invalidate_commands_params_in);
 358         memset(nonemb_cmd.va, 0, nonemb_cmd.size);
 359         tag = mgmt_invalidate_icds(phba, inv_tbl, num_invalidate,
 360                                    cid, &nonemb_cmd);
 361         if (!tag) {
 362                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_EH,
 363                             "BM_%d : mgmt_invalidate_icds could not be"
 364                             " submitted\n");
 365                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
 366                                     nonemb_cmd.va, nonemb_cmd.dma);
 367                 return FAILED;
 368         }
 369
 370         rc = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd);
 371         if (rc != -EBUSY)
 372                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
 373                                     nonemb_cmd.va, nonemb_cmd.dma);
 374         return iscsi_eh_device_reset(sc);
 375 }
 376
 377 static ssize_t beiscsi_show_boot_tgt_info(void *data, int type, char *buf)
 378 {
 379         struct beiscsi_hba *phba = data;
 380         struct mgmt_session_info *boot_sess = &phba->boot_sess;
 381         struct mgmt_conn_info *boot_conn = &boot_sess->conn_list[0];
 382         char *str = buf;
 383         int rc;
 384
 385         switch (type) {
 386         case ISCSI_BOOT_TGT_NAME:
 387                 rc = sprintf(buf, "%.*s\n",
 388                             (int)strlen(boot_sess->target_name),
 389                             (char *)&boot_sess->target_name);
 390                 break;
 391         case ISCSI_BOOT_TGT_IP_ADDR:
 392                 if (boot_conn->dest_ipaddr.ip_type == 0x1)
 393                         rc = sprintf(buf, "%pI4\n",
 394                                 (char *)&boot_conn->dest_ipaddr.addr);
 395                 else
 396                         rc = sprintf(str, "%pI6\n",
 397                                 (char *)&boot_conn->dest_ipaddr.addr);
 398                 break;
 399         case ISCSI_BOOT_TGT_PORT:
 400                 rc = sprintf(str, "%d\n", boot_conn->dest_port);
 401                 break;
 402
 403         case ISCSI_BOOT_TGT_CHAP_NAME:
 404                 rc = sprintf(str,  "%.*s\n",
 405                              boot_conn->negotiated_login_options.auth_data.chap.
 406                              target_chap_name_length,
 407                              (char *)&boot_conn->negotiated_login_options.
 408                              auth_data.chap.target_chap_name);
 409                 break;
 410         case ISCSI_BOOT_TGT_CHAP_SECRET:
 411                 rc = sprintf(str,  "%.*s\n",
 412                              boot_conn->negotiated_login_options.auth_data.chap.
 413                              target_secret_length,
 414                              (char *)&boot_conn->negotiated_login_options.
 415                              auth_data.chap.target_secret);
 416                 break;
 417         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
 418                 rc = sprintf(str,  "%.*s\n",
 419                              boot_conn->negotiated_login_options.auth_data.chap.
 420                              intr_chap_name_length,
 421                              (char *)&boot_conn->negotiated_login_options.
 422                              auth_data.chap.intr_chap_name);
 423                 break;
 424         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
 425                 rc = sprintf(str,  "%.*s\n",
 426                              boot_conn->negotiated_login_options.auth_data.chap.
 427                              intr_secret_length,
 428                              (char *)&boot_conn->negotiated_login_options.
 429                              auth_data.chap.intr_secret);
 430                 break;
 431         case ISCSI_BOOT_TGT_FLAGS:
 432                 rc = sprintf(str, "2\n");
 433                 break;
 434         case ISCSI_BOOT_TGT_NIC_ASSOC:
 435                 rc = sprintf(str, "0\n");
 436                 break;
 437         default:
 438                 rc = -ENOSYS;
 439                 break;
 440         }
 441         return rc;
 442 }
 443
 444 static ssize_t beiscsi_show_boot_ini_info(void *data, int type, char *buf)
 445 {
 446         struct beiscsi_hba *phba = data;
 447         char *str = buf;
 448         int rc;
 449
 450         switch (type) {
 451         case ISCSI_BOOT_INI_INITIATOR_NAME:
 452                 rc = sprintf(str, "%s\n", phba->boot_sess.initiator_iscsiname);
 453                 break;
 454         default:
 455                 rc = -ENOSYS;
 456                 break;
 457         }
 458         return rc;
 459 }
 460
 461 static ssize_t beiscsi_show_boot_eth_info(void *data, int type, char *buf)
 462 {
 463         struct beiscsi_hba *phba = data;
 464         char *str = buf;
 465         int rc;
 466
 467         switch (type) {
 468         case ISCSI_BOOT_ETH_FLAGS:
 469                 rc = sprintf(str, "2\n");
 470                 break;
 471         case ISCSI_BOOT_ETH_INDEX:
 472                 rc = sprintf(str, "0\n");
 473                 break;
 474         case ISCSI_BOOT_ETH_MAC:
 475                 rc  = beiscsi_get_macaddr(str, phba);
 476                 break;
 477         default:
 478                 rc = -ENOSYS;
 479                 break;
 480         }
 481         return rc;
 482 }
 483
 484
 485 static umode_t beiscsi_tgt_get_attr_visibility(void *data, int type)
 486 {
 487         umode_t rc;
 488
 489         switch (type) {
 490         case ISCSI_BOOT_TGT_NAME:
 491         case ISCSI_BOOT_TGT_IP_ADDR:
 492         case ISCSI_BOOT_TGT_PORT:
 493         case ISCSI_BOOT_TGT_CHAP_NAME:
 494         case ISCSI_BOOT_TGT_CHAP_SECRET:
 495         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
 496         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
 497         case ISCSI_BOOT_TGT_NIC_ASSOC:
 498         case ISCSI_BOOT_TGT_FLAGS:
 499                 rc = S_IRUGO;
 500                 break;
 501         default:
 502                 rc = 0;
 503                 break;
 504         }
 505         return rc;
 506 }
 507
 508 static umode_t beiscsi_ini_get_attr_visibility(void *data, int type)
 509 {
 510         umode_t rc;
 511
 512         switch (type) {
 513         case ISCSI_BOOT_INI_INITIATOR_NAME:
 514                 rc = S_IRUGO;
 515                 break;
 516         default:
 517                 rc = 0;
 518                 break;
 519         }
 520         return rc;
 521 }
 522
 523
 524 static umode_t beiscsi_eth_get_attr_visibility(void *data, int type)
 525 {
 526         umode_t rc;
 527
 528         switch (type) {
 529         case ISCSI_BOOT_ETH_FLAGS:
 530         case ISCSI_BOOT_ETH_MAC:
 531         case ISCSI_BOOT_ETH_INDEX:
 532                 rc = S_IRUGO;
 533                 break;
 534         default:
 535                 rc = 0;
 536                 break;
 537         }
 538         return rc;
 539 }
 540
 541 /*------------------- PCI Driver operations and data ----------------- */
 542 static const struct pci_device_id beiscsi_pci_id_table[] = {
 543         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
 544         { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
 545         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
 546         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
 547         { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
 548         { PCI_DEVICE(ELX_VENDOR_ID, OC_SKH_ID1) },
 549         { 0 }
 550 };
 551 MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
 552
 553
 554 static struct scsi_host_template beiscsi_sht = {
 555         .module = THIS_MODULE,
 556         .name = "Emulex 10Gbe open-iscsi Initiator Driver",
 557         .proc_name = DRV_NAME,
 558         .queuecommand = iscsi_queuecommand,
 559         .change_queue_depth = scsi_change_queue_depth,
 560         .slave_configure = beiscsi_slave_configure,
 561         .target_alloc = iscsi_target_alloc,
 562         .eh_abort_handler = beiscsi_eh_abort,
 563         .eh_device_reset_handler = beiscsi_eh_device_reset,
 564         .eh_target_reset_handler = iscsi_eh_session_reset,
 565         .shost_attrs = beiscsi_attrs,
 566         .sg_tablesize = BEISCSI_SGLIST_ELEMENTS,
 567         .can_queue = BE2_IO_DEPTH,
 568         .this_id = -1,
 569         .max_sectors = BEISCSI_MAX_SECTORS,
 570         .cmd_per_lun = BEISCSI_CMD_PER_LUN,
 571         .use_clustering = ENABLE_CLUSTERING,
 572         .vendor_id = SCSI_NL_VID_TYPE_PCI | BE_VENDOR_ID,
 573         .track_queue_depth = 1,
 574 };
 575
 576 static struct scsi_transport_template *beiscsi_scsi_transport;
 577
 578 static struct beiscsi_hba *beiscsi_hba_alloc(struct pci_dev *pcidev)
 579 {
 580         struct beiscsi_hba *phba;
 581         struct Scsi_Host *shost;
 582
 583         shost = iscsi_host_alloc(&beiscsi_sht, sizeof(*phba), 0);
 584         if (!shost) {
 585                 dev_err(&pcidev->dev,
 586                         "beiscsi_hba_alloc - iscsi_host_alloc failed\n");
 587                 return NULL;
 588         }
 589         shost->max_id = BE2_MAX_SESSIONS;
 590         shost->max_channel = 0;
 591         shost->max_cmd_len = BEISCSI_MAX_CMD_LEN;
 592         shost->max_lun = BEISCSI_NUM_MAX_LUN;
 593         shost->transportt = beiscsi_scsi_transport;
 594         phba = iscsi_host_priv(shost);
 595         memset(phba, 0, sizeof(*phba));
 596         phba->shost = shost;
 597         phba->pcidev = pci_dev_get(pcidev);
 598         pci_set_drvdata(pcidev, phba);
 599         phba->interface_handle = 0xFFFFFFFF;
 600
 601         return phba;
 602 }
 603
 604 static void beiscsi_unmap_pci_function(struct beiscsi_hba *phba)
 605 {
 606         if (phba->csr_va) {
 607                 iounmap(phba->csr_va);
 608                 phba->csr_va = NULL;
 609         }
 610         if (phba->db_va) {
 611                 iounmap(phba->db_va);
 612                 phba->db_va = NULL;
 613         }
 614         if (phba->pci_va) {
 615                 iounmap(phba->pci_va);
 616                 phba->pci_va = NULL;
 617         }
 618 }
 619
 620 static int beiscsi_map_pci_bars(struct beiscsi_hba *phba,
 621                                 struct pci_dev *pcidev)
 622 {
 623         u8 __iomem *addr;
 624         int pcicfg_reg;
 625
 626         addr = ioremap_nocache(pci_resource_start(pcidev, 2),
 627                                pci_resource_len(pcidev, 2));
 628         if (addr == NULL)
 629                 return -ENOMEM;
 630         phba->ctrl.csr = addr;
 631         phba->csr_va = addr;
 632         phba->csr_pa.u.a64.address = pci_resource_start(pcidev, 2);
 633
 634         addr = ioremap_nocache(pci_resource_start(pcidev, 4), 128 * 1024);
 635         if (addr == NULL)
 636                 goto pci_map_err;
 637         phba->ctrl.db = addr;
 638         phba->db_va = addr;
 639         phba->db_pa.u.a64.address =  pci_resource_start(pcidev, 4);
 640
 641         if (phba->generation == BE_GEN2)
 642                 pcicfg_reg = 1;
 643         else
 644                 pcicfg_reg = 0;
 645
 646         addr = ioremap_nocache(pci_resource_start(pcidev, pcicfg_reg),
 647                                pci_resource_len(pcidev, pcicfg_reg));
 648
 649         if (addr == NULL)
 650                 goto pci_map_err;
 651         phba->ctrl.pcicfg = addr;
 652         phba->pci_va = addr;
 653         phba->pci_pa.u.a64.address = pci_resource_start(pcidev, pcicfg_reg);
 654         return 0;
 655
 656 pci_map_err:
 657         beiscsi_unmap_pci_function(phba);
 658         return -ENOMEM;
 659 }
 660
 661 static int beiscsi_enable_pci(struct pci_dev *pcidev)
 662 {
 663         int ret;
 664
 665         ret = pci_enable_device(pcidev);
 666         if (ret) {
 667                 dev_err(&pcidev->dev,
 668                         "beiscsi_enable_pci - enable device failed\n");
 669                 return ret;
 670         }
 671
 672         ret = pci_request_regions(pcidev, DRV_NAME);
 673         if (ret) {
 674                 dev_err(&pcidev->dev,
 675                                 "beiscsi_enable_pci - request region failed\n");
 676                 goto pci_dev_disable;
 677         }
 678
 679         pci_set_master(pcidev);
 680         ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64));
 681         if (ret) {
 682                 ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
 683                 if (ret) {
 684                         dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");
 685                         goto pci_region_release;
 686                 } else {
 687                         ret = pci_set_consistent_dma_mask(pcidev,
 688                                                           DMA_BIT_MASK(32));
 689                 }
 690         } else {
 691                 ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64));
 692                 if (ret) {
 693                         dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n");
 694                         goto pci_region_release;
 695                 }
 696         }
 697         return 0;
 698
 699 pci_region_release:
 700         pci_release_regions(pcidev);
 701 pci_dev_disable:
 702         pci_disable_device(pcidev);
 703
 704         return ret;
 705 }
 706
 707 static int be_ctrl_init(struct beiscsi_hba *phba, struct pci_dev *pdev)
 708 {
 709         struct be_ctrl_info *ctrl = &phba->ctrl;
 710         struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
 711         struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
 712         int status = 0;
 713
 714         ctrl->pdev = pdev;
 715         status = beiscsi_map_pci_bars(phba, pdev);
 716         if (status)
 717                 return status;
 718         mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
 719         mbox_mem_alloc->va = pci_alloc_consistent(pdev,
 720                                                   mbox_mem_alloc->size,
 721                                                   &mbox_mem_alloc->dma);
 722         if (!mbox_mem_alloc->va) {
 723                 beiscsi_unmap_pci_function(phba);
 724                 return -ENOMEM;
 725         }
 726
 727         mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
 728         mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
 729         mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
 730         memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
 731         mutex_init(&ctrl->mbox_lock);
 732         spin_lock_init(&phba->ctrl.mcc_lock);
 733
 734         return status;
 735 }
 736
 737 /**
 738  * beiscsi_get_params()- Set the config paramters
 739  * @phba: ptr  device priv structure
 740  **/
 741 static void beiscsi_get_params(struct beiscsi_hba *phba)
 742 {
 743         uint32_t total_cid_count = 0;
 744         uint32_t total_icd_count = 0;
 745         uint8_t ulp_num = 0;
 746
 747         total_cid_count = BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP0) +
 748                           BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP1);
 749
 750         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
 751                 uint32_t align_mask = 0;
 752                 uint32_t icd_post_per_page = 0;
 753                 uint32_t icd_count_unavailable = 0;
 754                 uint32_t icd_start = 0, icd_count = 0;
 755                 uint32_t icd_start_align = 0, icd_count_align = 0;
 756
 757                 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
 758                         icd_start = phba->fw_config.iscsi_icd_start[ulp_num];
 759                         icd_count = phba->fw_config.iscsi_icd_count[ulp_num];
 760
 761                         /* Get ICD count that can be posted on each page */
 762                         icd_post_per_page = (PAGE_SIZE / (BE2_SGE *
 763                                              sizeof(struct iscsi_sge)));
 764                         align_mask = (icd_post_per_page - 1);
 765
 766                         /* Check if icd_start is aligned ICD per page posting */
 767                         if (icd_start % icd_post_per_page) {
 768                                 icd_start_align = ((icd_start +
 769                                                     icd_post_per_page) &
 770                                                     ~(align_mask));
 771                                 phba->fw_config.
 772                                         iscsi_icd_start[ulp_num] =
 773                                         icd_start_align;
 774                         }
 775
 776                         icd_count_align = (icd_count & ~align_mask);
 777
 778                         /* ICD discarded in the process of alignment */
 779                         if (icd_start_align)
 780                                 icd_count_unavailable = ((icd_start_align -
 781                                                           icd_start) +
 782                                                          (icd_count -
 783                                                           icd_count_align));
 784
 785                         /* Updated ICD count available */
 786                         phba->fw_config.iscsi_icd_count[ulp_num] = (icd_count -
 787                                         icd_count_unavailable);
 788
 789                         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
 790                                         "BM_%d : Aligned ICD values\n"
 791                                         "\t ICD Start : %d\n"
 792                                         "\t ICD Count : %d\n"
 793                                         "\t ICD Discarded : %d\n",
 794                                         phba->fw_config.
 795                                         iscsi_icd_start[ulp_num],
 796                                         phba->fw_config.
 797                                         iscsi_icd_count[ulp_num],
 798                                         icd_count_unavailable);
 799                         break;
 800                 }
 801         }
 802
 803         total_icd_count = phba->fw_config.iscsi_icd_count[ulp_num];
 804         phba->params.ios_per_ctrl = (total_icd_count -
 805                                     (total_cid_count +
 806                                      BE2_TMFS + BE2_NOPOUT_REQ));
 807         phba->params.cxns_per_ctrl = total_cid_count;
 808         phba->params.asyncpdus_per_ctrl = total_cid_count;
 809         phba->params.icds_per_ctrl = total_icd_count;
 810         phba->params.num_sge_per_io = BE2_SGE;
 811         phba->params.defpdu_hdr_sz = BE2_DEFPDU_HDR_SZ;
 812         phba->params.defpdu_data_sz = BE2_DEFPDU_DATA_SZ;
 813         phba->params.eq_timer = 64;
 814         phba->params.num_eq_entries = 1024;
 815         phba->params.num_cq_entries = 1024;
 816         phba->params.wrbs_per_cxn = 256;
 817 }
 818
 819 static void hwi_ring_eq_db(struct beiscsi_hba *phba,
 820                            unsigned int id, unsigned int clr_interrupt,
 821                            unsigned int num_processed,
 822                            unsigned char rearm, unsigned char event)
 823 {
 824         u32 val = 0;
 825
 826         if (rearm)
 827                 val |= 1 << DB_EQ_REARM_SHIFT;
 828         if (clr_interrupt)
 829                 val |= 1 << DB_EQ_CLR_SHIFT;
 830         if (event)
 831                 val |= 1 << DB_EQ_EVNT_SHIFT;
 832
 833         val |= num_processed << DB_EQ_NUM_POPPED_SHIFT;
 834         /* Setting lower order EQ_ID Bits */
 835         val |= (id & DB_EQ_RING_ID_LOW_MASK);
 836
 837         /* Setting Higher order EQ_ID Bits */
 838         val |= (((id >> DB_EQ_HIGH_FEILD_SHIFT) &
 839                   DB_EQ_RING_ID_HIGH_MASK)
 840                   << DB_EQ_HIGH_SET_SHIFT);
 841
 842         iowrite32(val, phba->db_va + DB_EQ_OFFSET);
 843 }
 844
 845 /**
 846  * be_isr_mcc - The isr routine of the driver.
 847  * @irq: Not used
 848  * @dev_id: Pointer to host adapter structure
 849  */
 850 static irqreturn_t be_isr_mcc(int irq, void *dev_id)
 851 {
 852         struct beiscsi_hba *phba;
 853         struct be_eq_entry *eqe = NULL;
 854         struct be_queue_info *eq;
 855         struct be_queue_info *mcc;
 856         unsigned int num_eq_processed;
 857         struct be_eq_obj *pbe_eq;
 858         unsigned long flags;
 859
 860         pbe_eq = dev_id;
 861         eq = &pbe_eq->q;
 862         phba =  pbe_eq->phba;
 863         mcc = &phba->ctrl.mcc_obj.cq;
 864         eqe = queue_tail_node(eq);
 865
 866         num_eq_processed = 0;
 867
 868         while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
 869                                 & EQE_VALID_MASK) {
 870                 if (((eqe->dw[offsetof(struct amap_eq_entry,
 871                      resource_id) / 32] &
 872                      EQE_RESID_MASK) >> 16) == mcc->id) {
 873                         spin_lock_irqsave(&phba->isr_lock, flags);
 874                         pbe_eq->todo_mcc_cq = true;
 875                         spin_unlock_irqrestore(&phba->isr_lock, flags);
 876                 }
 877                 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
 878                 queue_tail_inc(eq);
 879                 eqe = queue_tail_node(eq);
 880                 num_eq_processed++;
 881         }
 882         if (pbe_eq->todo_mcc_cq)
 883                 queue_work(phba->wq, &pbe_eq->work_cqs);
 884         if (num_eq_processed)
 885                 hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 1, 1);
 886
 887         return IRQ_HANDLED;
 888 }
 889
 890 /**
 891  * be_isr_msix - The isr routine of the driver.
 892  * @irq: Not used
 893  * @dev_id: Pointer to host adapter structure
 894  */
 895 static irqreturn_t be_isr_msix(int irq, void *dev_id)
 896 {
 897         struct beiscsi_hba *phba;
 898         struct be_queue_info *eq;
 899         struct be_eq_obj *pbe_eq;
 900
 901         pbe_eq = dev_id;
 902         eq = &pbe_eq->q;
 903
 904         phba = pbe_eq->phba;
 905
 906         /* disable interrupt till iopoll completes */
 907         hwi_ring_eq_db(phba, eq->id, 1, 0, 0, 1);
 908         irq_poll_sched(&pbe_eq->iopoll);
 909
 910         return IRQ_HANDLED;
 911 }
 912
 913 /**
 914  * be_isr - The isr routine of the driver.
 915  * @irq: Not used
 916  * @dev_id: Pointer to host adapter structure
 917  */
 918 static irqreturn_t be_isr(int irq, void *dev_id)
 919 {
 920         struct beiscsi_hba *phba;
 921         struct hwi_controller *phwi_ctrlr;
 922         struct hwi_context_memory *phwi_context;
 923         struct be_eq_entry *eqe = NULL;
 924         struct be_queue_info *eq;
 925         struct be_queue_info *mcc;
 926         unsigned long flags, index;
 927         unsigned int num_mcceq_processed, num_ioeq_processed;
 928         struct be_ctrl_info *ctrl;
 929         struct be_eq_obj *pbe_eq;
 930         int isr;
 931
 932         phba = dev_id;
 933         ctrl = &phba->ctrl;
 934         isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET +
 935                        (PCI_FUNC(ctrl->pdev->devfn) * CEV_ISR_SIZE));
 936         if (!isr)
 937                 return IRQ_NONE;
 938
 939         phwi_ctrlr = phba->phwi_ctrlr;
 940         phwi_context = phwi_ctrlr->phwi_ctxt;
 941         pbe_eq = &phwi_context->be_eq[0];
 942
 943         eq = &phwi_context->be_eq[0].q;
 944         mcc = &phba->ctrl.mcc_obj.cq;
 945         index = 0;
 946         eqe = queue_tail_node(eq);
 947
 948         num_ioeq_processed = 0;
 949         num_mcceq_processed = 0;
 950         while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
 951                                 & EQE_VALID_MASK) {
 952                 if (((eqe->dw[offsetof(struct amap_eq_entry,
 953                      resource_id) / 32] &
 954                      EQE_RESID_MASK) >> 16) == mcc->id) {
 955                         spin_lock_irqsave(&phba->isr_lock, flags);
 956                         pbe_eq->todo_mcc_cq = true;
 957                         spin_unlock_irqrestore(&phba->isr_lock, flags);
 958                         num_mcceq_processed++;
 959                 } else {
 960                         irq_poll_sched(&pbe_eq->iopoll);
 961                         num_ioeq_processed++;
 962                 }
 963                 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
 964                 queue_tail_inc(eq);
 965                 eqe = queue_tail_node(eq);
 966         }
 967         if (num_ioeq_processed || num_mcceq_processed) {
 968                 if (pbe_eq->todo_mcc_cq)
 969                         queue_work(phba->wq, &pbe_eq->work_cqs);
 970
 971                 if ((num_mcceq_processed) && (!num_ioeq_processed))
 972                         hwi_ring_eq_db(phba, eq->id, 0,
 973                                       (num_ioeq_processed +
 974                                        num_mcceq_processed) , 1, 1);
 975                 else
 976                         hwi_ring_eq_db(phba, eq->id, 0,
 977                                        (num_ioeq_processed +
 978                                         num_mcceq_processed), 0, 1);
 979
 980                 return IRQ_HANDLED;
 981         } else
 982                 return IRQ_NONE;
 983 }
 984
 985
 986 static int beiscsi_init_irqs(struct beiscsi_hba *phba)
 987 {
 988         struct pci_dev *pcidev = phba->pcidev;
 989         struct hwi_controller *phwi_ctrlr;
 990         struct hwi_context_memory *phwi_context;
 991         int ret, msix_vec, i, j;
 992
 993         phwi_ctrlr = phba->phwi_ctrlr;
 994         phwi_context = phwi_ctrlr->phwi_ctxt;
 995
 996         if (phba->msix_enabled) {
 997                 for (i = 0; i < phba->num_cpus; i++) {
 998                         phba->msi_name[i] = kzalloc(BEISCSI_MSI_NAME,
 999                                                     GFP_KERNEL);
1000                         if (!phba->msi_name[i]) {
1001                                 ret = -ENOMEM;
1002                                 goto free_msix_irqs;
1003                         }
1004
1005                         sprintf(phba->msi_name[i], "beiscsi_%02x_%02x",
1006                                 phba->shost->host_no, i);
1007                         msix_vec = phba->msix_entries[i].vector;
1008                         ret = request_irq(msix_vec, be_isr_msix, 0,
1009                                           phba->msi_name[i],
1010                                           &phwi_context->be_eq[i]);
1011                         if (ret) {
1012                                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1013                                             "BM_%d : beiscsi_init_irqs-Failed to"
1014                                             "register msix for i = %d\n",
1015                                             i);
1016                                 kfree(phba->msi_name[i]);
1017                                 goto free_msix_irqs;
1018                         }
1019                 }
1020                 phba->msi_name[i] = kzalloc(BEISCSI_MSI_NAME, GFP_KERNEL);
1021                 if (!phba->msi_name[i]) {
1022                         ret = -ENOMEM;
1023                         goto free_msix_irqs;
1024                 }
1025                 sprintf(phba->msi_name[i], "beiscsi_mcc_%02x",
1026                         phba->shost->host_no);
1027                 msix_vec = phba->msix_entries[i].vector;
1028                 ret = request_irq(msix_vec, be_isr_mcc, 0, phba->msi_name[i],
1029                                   &phwi_context->be_eq[i]);
1030                 if (ret) {
1031                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT ,
1032                                     "BM_%d : beiscsi_init_irqs-"
1033                                     "Failed to register beiscsi_msix_mcc\n");
1034                         kfree(phba->msi_name[i]);
1035                         goto free_msix_irqs;
1036                 }
1037
1038         } else {
1039                 ret = request_irq(pcidev->irq, be_isr, IRQF_SHARED,
1040                                   "beiscsi", phba);
1041                 if (ret) {
1042                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1043                                     "BM_%d : beiscsi_init_irqs-"
1044                                     "Failed to register irq\\n");
1045                         return ret;
1046                 }
1047         }
1048         return 0;
1049 free_msix_irqs:
1050         for (j = i - 1; j >= 0; j--) {
1051                 kfree(phba->msi_name[j]);
1052                 msix_vec = phba->msix_entries[j].vector;
1053                 free_irq(msix_vec, &phwi_context->be_eq[j]);
1054         }
1055         return ret;
1056 }
1057
1058 void hwi_ring_cq_db(struct beiscsi_hba *phba,
1059                            unsigned int id, unsigned int num_processed,
1060                            unsigned char rearm)
1061 {
1062         u32 val = 0;
1063
1064         if (rearm)
1065                 val |= 1 << DB_CQ_REARM_SHIFT;
1066
1067         val |= num_processed << DB_CQ_NUM_POPPED_SHIFT;
1068
1069         /* Setting lower order CQ_ID Bits */
1070         val |= (id & DB_CQ_RING_ID_LOW_MASK);
1071
1072         /* Setting Higher order CQ_ID Bits */
1073         val |= (((id >> DB_CQ_HIGH_FEILD_SHIFT) &
1074                   DB_CQ_RING_ID_HIGH_MASK)
1075                   << DB_CQ_HIGH_SET_SHIFT);
1076
1077         iowrite32(val, phba->db_va + DB_CQ_OFFSET);
1078 }
1079
1080 static unsigned int
1081 beiscsi_process_async_pdu(struct beiscsi_conn *beiscsi_conn,
1082                           struct beiscsi_hba *phba,
1083                           struct pdu_base *ppdu,
1084                           unsigned long pdu_len,
1085                           void *pbuffer, unsigned long buf_len)
1086 {
1087         struct iscsi_conn *conn = beiscsi_conn->conn;
1088         struct iscsi_session *session = conn->session;
1089         struct iscsi_task *task;
1090         struct beiscsi_io_task *io_task;
1091         struct iscsi_hdr *login_hdr;
1092
1093         switch (ppdu->dw[offsetof(struct amap_pdu_base, opcode) / 32] &
1094                                                 PDUBASE_OPCODE_MASK) {
1095         case ISCSI_OP_NOOP_IN:
1096                 pbuffer = NULL;
1097                 buf_len = 0;
1098                 break;
1099         case ISCSI_OP_ASYNC_EVENT:
1100                 break;
1101         case ISCSI_OP_REJECT:
1102                 WARN_ON(!pbuffer);
1103                 WARN_ON(!(buf_len == 48));
1104                 beiscsi_log(phba, KERN_ERR,
1105                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1106                             "BM_%d : In ISCSI_OP_REJECT\n");
1107                 break;
1108         case ISCSI_OP_LOGIN_RSP:
1109         case ISCSI_OP_TEXT_RSP:
1110                 task = conn->login_task;
1111                 io_task = task->dd_data;
1112                 login_hdr = (struct iscsi_hdr *)ppdu;
1113                 login_hdr->itt = io_task->libiscsi_itt;
1114                 break;
1115         default:
1116                 beiscsi_log(phba, KERN_WARNING,
1117                             BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1118                             "BM_%d : Unrecognized opcode 0x%x in async msg\n",
1119                             (ppdu->
1120                              dw[offsetof(struct amap_pdu_base, opcode) / 32]
1121                              & PDUBASE_OPCODE_MASK));
1122                 return 1;
1123         }
1124
1125         spin_lock_bh(&session->back_lock);
1126         __iscsi_complete_pdu(conn, (struct iscsi_hdr *)ppdu, pbuffer, buf_len);
1127         spin_unlock_bh(&session->back_lock);
1128         return 0;
1129 }
1130
1131 static struct sgl_handle *alloc_io_sgl_handle(struct beiscsi_hba *phba)
1132 {
1133         struct sgl_handle *psgl_handle;
1134
1135         spin_lock_bh(&phba->io_sgl_lock);
1136         if (phba->io_sgl_hndl_avbl) {
1137                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
1138                             "BM_%d : In alloc_io_sgl_handle,"
1139                             " io_sgl_alloc_index=%d\n",
1140                             phba->io_sgl_alloc_index);
1141
1142                 psgl_handle = phba->io_sgl_hndl_base[phba->
1143                                                 io_sgl_alloc_index];
1144                 phba->io_sgl_hndl_base[phba->io_sgl_alloc_index] = NULL;
1145                 phba->io_sgl_hndl_avbl--;
1146                 if (phba->io_sgl_alloc_index == (phba->params.
1147                                                  ios_per_ctrl - 1))
1148                         phba->io_sgl_alloc_index = 0;
1149                 else
1150                         phba->io_sgl_alloc_index++;
1151         } else
1152                 psgl_handle = NULL;
1153         spin_unlock_bh(&phba->io_sgl_lock);
1154         return psgl_handle;
1155 }
1156
1157 static void
1158 free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
1159 {
1160         spin_lock_bh(&phba->io_sgl_lock);
1161         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
1162                     "BM_%d : In free_,io_sgl_free_index=%d\n",
1163                     phba->io_sgl_free_index);
1164
1165         if (phba->io_sgl_hndl_base[phba->io_sgl_free_index]) {
1166                 /*
1167                  * this can happen if clean_task is called on a task that
1168                  * failed in xmit_task or alloc_pdu.
1169                  */
1170                  beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
1171                              "BM_%d : Double Free in IO SGL io_sgl_free_index=%d,"
1172                              "value there=%p\n", phba->io_sgl_free_index,
1173                              phba->io_sgl_hndl_base
1174                              [phba->io_sgl_free_index]);
1175                  spin_unlock_bh(&phba->io_sgl_lock);
1176                 return;
1177         }
1178         phba->io_sgl_hndl_base[phba->io_sgl_free_index] = psgl_handle;
1179         phba->io_sgl_hndl_avbl++;
1180         if (phba->io_sgl_free_index == (phba->params.ios_per_ctrl - 1))
1181                 phba->io_sgl_free_index = 0;
1182         else
1183                 phba->io_sgl_free_index++;
1184         spin_unlock_bh(&phba->io_sgl_lock);
1185 }
1186
1187 static inline struct wrb_handle *
1188 beiscsi_get_wrb_handle(struct hwi_wrb_context *pwrb_context,
1189                        unsigned int wrbs_per_cxn)
1190 {
1191         struct wrb_handle *pwrb_handle;
1192
1193         spin_lock_bh(&pwrb_context->wrb_lock);
1194         pwrb_handle = pwrb_context->pwrb_handle_base[pwrb_context->alloc_index];
1195         pwrb_context->wrb_handles_available--;
1196         if (pwrb_context->alloc_index == (wrbs_per_cxn - 1))
1197                 pwrb_context->alloc_index = 0;
1198         else
1199                 pwrb_context->alloc_index++;
1200         spin_unlock_bh(&pwrb_context->wrb_lock);
1201
1202         return pwrb_handle;
1203 }
1204
1205 /**
1206  * alloc_wrb_handle - To allocate a wrb handle
1207  * @phba: The hba pointer
1208  * @cid: The cid to use for allocation
1209  * @pwrb_context: ptr to ptr to wrb context
1210  *
1211  * This happens under session_lock until submission to chip
1212  */
1213 struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,
1214                                     struct hwi_wrb_context **pcontext)
1215 {
1216         struct hwi_wrb_context *pwrb_context;
1217         struct hwi_controller *phwi_ctrlr;
1218         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1219
1220         phwi_ctrlr = phba->phwi_ctrlr;
1221         pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1222         /* return the context address */
1223         *pcontext = pwrb_context;
1224         return beiscsi_get_wrb_handle(pwrb_context, phba->params.wrbs_per_cxn);
1225 }
1226
1227 static inline void
1228 beiscsi_put_wrb_handle(struct hwi_wrb_context *pwrb_context,
1229                        struct wrb_handle *pwrb_handle,
1230                        unsigned int wrbs_per_cxn)
1231 {
1232         spin_lock_bh(&pwrb_context->wrb_lock);
1233         pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle;
1234         pwrb_context->wrb_handles_available++;
1235         if (pwrb_context->free_index == (wrbs_per_cxn - 1))
1236                 pwrb_context->free_index = 0;
1237         else
1238                 pwrb_context->free_index++;
1239         spin_unlock_bh(&pwrb_context->wrb_lock);
1240 }
1241
1242 /**
1243  * free_wrb_handle - To free the wrb handle back to pool
1244  * @phba: The hba pointer
1245  * @pwrb_context: The context to free from
1246  * @pwrb_handle: The wrb_handle to free
1247  *
1248  * This happens under session_lock until submission to chip
1249  */
1250 static void
1251 free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context,
1252                 struct wrb_handle *pwrb_handle)
1253 {
1254         beiscsi_put_wrb_handle(pwrb_context,
1255                                pwrb_handle,
1256                                phba->params.wrbs_per_cxn);
1257         beiscsi_log(phba, KERN_INFO,
1258                     BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1259                     "BM_%d : FREE WRB: pwrb_handle=%p free_index=0x%x"
1260                     "wrb_handles_available=%d\n",
1261                     pwrb_handle, pwrb_context->free_index,
1262                     pwrb_context->wrb_handles_available);
1263 }
1264
1265 static struct sgl_handle *alloc_mgmt_sgl_handle(struct beiscsi_hba *phba)
1266 {
1267         struct sgl_handle *psgl_handle;
1268
1269         spin_lock_bh(&phba->mgmt_sgl_lock);
1270         if (phba->eh_sgl_hndl_avbl) {
1271                 psgl_handle = phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index];
1272                 phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index] = NULL;
1273                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1274                             "BM_%d : mgmt_sgl_alloc_index=%d=0x%x\n",
1275                             phba->eh_sgl_alloc_index,
1276                             phba->eh_sgl_alloc_index);
1277
1278                 phba->eh_sgl_hndl_avbl--;
1279                 if (phba->eh_sgl_alloc_index ==
1280                     (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl -
1281                      1))
1282                         phba->eh_sgl_alloc_index = 0;
1283                 else
1284                         phba->eh_sgl_alloc_index++;
1285         } else
1286                 psgl_handle = NULL;
1287         spin_unlock_bh(&phba->mgmt_sgl_lock);
1288         return psgl_handle;
1289 }
1290
1291 void
1292 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
1293 {
1294         spin_lock_bh(&phba->mgmt_sgl_lock);
1295         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1296                     "BM_%d : In  free_mgmt_sgl_handle,"
1297                     "eh_sgl_free_index=%d\n",
1298                     phba->eh_sgl_free_index);
1299
1300         if (phba->eh_sgl_hndl_base[phba->eh_sgl_free_index]) {
1301                 /*
1302                  * this can happen if clean_task is called on a task that
1303                  * failed in xmit_task or alloc_pdu.
1304                  */
1305                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1306                             "BM_%d : Double Free in eh SGL ,"
1307                             "eh_sgl_free_index=%d\n",
1308                             phba->eh_sgl_free_index);
1309                 spin_unlock_bh(&phba->mgmt_sgl_lock);
1310                 return;
1311         }
1312         phba->eh_sgl_hndl_base[phba->eh_sgl_free_index] = psgl_handle;
1313         phba->eh_sgl_hndl_avbl++;
1314         if (phba->eh_sgl_free_index ==
1315             (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - 1))
1316                 phba->eh_sgl_free_index = 0;
1317         else
1318                 phba->eh_sgl_free_index++;
1319         spin_unlock_bh(&phba->mgmt_sgl_lock);
1320 }
1321
1322 static void
1323 be_complete_io(struct beiscsi_conn *beiscsi_conn,
1324                 struct iscsi_task *task,
1325                 struct common_sol_cqe *csol_cqe)
1326 {
1327         struct beiscsi_io_task *io_task = task->dd_data;
1328         struct be_status_bhs *sts_bhs =
1329                                 (struct be_status_bhs *)io_task->cmd_bhs;
1330         struct iscsi_conn *conn = beiscsi_conn->conn;
1331         unsigned char *sense;
1332         u32 resid = 0, exp_cmdsn, max_cmdsn;
1333         u8 rsp, status, flags;
1334
1335         exp_cmdsn = csol_cqe->exp_cmdsn;
1336         max_cmdsn = (csol_cqe->exp_cmdsn +
1337                      csol_cqe->cmd_wnd - 1);
1338         rsp = csol_cqe->i_resp;
1339         status = csol_cqe->i_sts;
1340         flags = csol_cqe->i_flags;
1341         resid = csol_cqe->res_cnt;
1342
1343         if (!task->sc) {
1344                 if (io_task->scsi_cmnd) {
1345                         scsi_dma_unmap(io_task->scsi_cmnd);
1346                         io_task->scsi_cmnd = NULL;
1347                 }
1348
1349                 return;
1350         }
1351         task->sc->result = (DID_OK << 16) | status;
1352         if (rsp != ISCSI_STATUS_CMD_COMPLETED) {
1353                 task->sc->result = DID_ERROR << 16;
1354                 goto unmap;
1355         }
1356
1357         /* bidi not initially supported */
1358         if (flags & (ISCSI_FLAG_CMD_UNDERFLOW | ISCSI_FLAG_CMD_OVERFLOW)) {
1359                 if (!status && (flags & ISCSI_FLAG_CMD_OVERFLOW))
1360                         task->sc->result = DID_ERROR << 16;
1361
1362                 if (flags & ISCSI_FLAG_CMD_UNDERFLOW) {
1363                         scsi_set_resid(task->sc, resid);
1364                         if (!status && (scsi_bufflen(task->sc) - resid <
1365                             task->sc->underflow))
1366                                 task->sc->result = DID_ERROR << 16;
1367                 }
1368         }
1369
1370         if (status == SAM_STAT_CHECK_CONDITION) {
1371                 u16 sense_len;
1372                 unsigned short *slen = (unsigned short *)sts_bhs->sense_info;
1373
1374                 sense = sts_bhs->sense_info + sizeof(unsigned short);
1375                 sense_len = be16_to_cpu(*slen);
1376                 memcpy(task->sc->sense_buffer, sense,
1377                        min_t(u16, sense_len, SCSI_SENSE_BUFFERSIZE));
1378         }
1379
1380         if (io_task->cmd_bhs->iscsi_hdr.flags & ISCSI_FLAG_CMD_READ)
1381                 conn->rxdata_octets += resid;
1382 unmap:
1383         if (io_task->scsi_cmnd) {
1384                 scsi_dma_unmap(io_task->scsi_cmnd);
1385                 io_task->scsi_cmnd = NULL;
1386         }
1387         iscsi_complete_scsi_task(task, exp_cmdsn, max_cmdsn);
1388 }
1389
1390 static void
1391 be_complete_logout(struct beiscsi_conn *beiscsi_conn,
1392                     struct iscsi_task *task,
1393                     struct common_sol_cqe *csol_cqe)
1394 {
1395         struct iscsi_logout_rsp *hdr;
1396         struct beiscsi_io_task *io_task = task->dd_data;
1397         struct iscsi_conn *conn = beiscsi_conn->conn;
1398
1399         hdr = (struct iscsi_logout_rsp *)task->hdr;
1400         hdr->opcode = ISCSI_OP_LOGOUT_RSP;
1401         hdr->t2wait = 5;
1402         hdr->t2retain = 0;
1403         hdr->flags = csol_cqe->i_flags;
1404         hdr->response = csol_cqe->i_resp;
1405         hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1406         hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1407                                      csol_cqe->cmd_wnd - 1);
1408
1409         hdr->dlength[0] = 0;
1410         hdr->dlength[1] = 0;
1411         hdr->dlength[2] = 0;
1412         hdr->hlength = 0;
1413         hdr->itt = io_task->libiscsi_itt;
1414         __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1415 }
1416
1417 static void
1418 be_complete_tmf(struct beiscsi_conn *beiscsi_conn,
1419                  struct iscsi_task *task,
1420                  struct common_sol_cqe *csol_cqe)
1421 {
1422         struct iscsi_tm_rsp *hdr;
1423         struct iscsi_conn *conn = beiscsi_conn->conn;
1424         struct beiscsi_io_task *io_task = task->dd_data;
1425
1426         hdr = (struct iscsi_tm_rsp *)task->hdr;
1427         hdr->opcode = ISCSI_OP_SCSI_TMFUNC_RSP;
1428         hdr->flags = csol_cqe->i_flags;
1429         hdr->response = csol_cqe->i_resp;
1430         hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1431         hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1432                                      csol_cqe->cmd_wnd - 1);
1433
1434         hdr->itt = io_task->libiscsi_itt;
1435         __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1436 }
1437
1438 static void
1439 hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
1440                        struct beiscsi_hba *phba, struct sol_cqe *psol)
1441 {
1442         struct hwi_wrb_context *pwrb_context;
1443         struct wrb_handle *pwrb_handle = NULL;
1444         struct hwi_controller *phwi_ctrlr;
1445         struct iscsi_task *task;
1446         struct beiscsi_io_task *io_task;
1447         uint16_t wrb_index, cid, cri_index;
1448
1449         phwi_ctrlr = phba->phwi_ctrlr;
1450         if (is_chip_be2_be3r(phba)) {
1451                 wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe,
1452                                           wrb_idx, psol);
1453                 cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe,
1454                                     cid, psol);
1455         } else {
1456                 wrb_index = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,
1457                                           wrb_idx, psol);
1458                 cid = AMAP_GET_BITS(struct amap_it_dmsg_cqe_v2,
1459                                     cid, psol);
1460         }
1461
1462         cri_index = BE_GET_CRI_FROM_CID(cid);
1463         pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1464         pwrb_handle = pwrb_context->pwrb_handle_basestd[wrb_index];
1465         task = pwrb_handle->pio_handle;
1466
1467         io_task = task->dd_data;
1468         memset(io_task->pwrb_handle->pwrb, 0, sizeof(struct iscsi_wrb));
1469         iscsi_put_task(task);
1470 }
1471
1472 static void
1473 be_complete_nopin_resp(struct beiscsi_conn *beiscsi_conn,
1474                         struct iscsi_task *task,
1475                         struct common_sol_cqe *csol_cqe)
1476 {
1477         struct iscsi_nopin *hdr;
1478         struct iscsi_conn *conn = beiscsi_conn->conn;
1479         struct beiscsi_io_task *io_task = task->dd_data;
1480
1481         hdr = (struct iscsi_nopin *)task->hdr;
1482         hdr->flags = csol_cqe->i_flags;
1483         hdr->exp_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn);
1484         hdr->max_cmdsn = cpu_to_be32(csol_cqe->exp_cmdsn +
1485                                      csol_cqe->cmd_wnd - 1);
1486
1487         hdr->opcode = ISCSI_OP_NOOP_IN;
1488         hdr->itt = io_task->libiscsi_itt;
1489         __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0);
1490 }
1491
1492 static void adapter_get_sol_cqe(struct beiscsi_hba *phba,
1493                 struct sol_cqe *psol,
1494                 struct common_sol_cqe *csol_cqe)
1495 {
1496         if (is_chip_be2_be3r(phba)) {
1497                 csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe,
1498                                                     i_exp_cmd_sn, psol);
1499                 csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe,
1500                                                   i_res_cnt, psol);
1501                 csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe,
1502                                                   i_cmd_wnd, psol);
1503                 csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe,
1504                                                     wrb_index, psol);
1505                 csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe,
1506                                               cid, psol);
1507                 csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe,
1508                                                  hw_sts, psol);
1509                 csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe,
1510                                                  i_resp, psol);
1511                 csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe,
1512                                                 i_sts, psol);
1513                 csol_cqe->i_flags = AMAP_GET_BITS(struct amap_sol_cqe,
1514                                                   i_flags, psol);
1515         } else {
1516                 csol_cqe->exp_cmdsn = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1517                                                     i_exp_cmd_sn, psol);
1518                 csol_cqe->res_cnt = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1519                                                   i_res_cnt, psol);
1520                 csol_cqe->wrb_index = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1521                                                     wrb_index, psol);
1522                 csol_cqe->cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1523                                               cid, psol);
1524                 csol_cqe->hw_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1525                                                  hw_sts, psol);
1526                 csol_cqe->cmd_wnd = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1527                                                   i_cmd_wnd, psol);
1528                 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1529                                   cmd_cmpl, psol))
1530                         csol_cqe->i_sts = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1531                                                         i_sts, psol);
1532                 else
1533                         csol_cqe->i_resp = AMAP_GET_BITS(struct amap_sol_cqe_v2,
1534                                                          i_sts, psol);
1535                 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1536                                   u, psol))
1537                         csol_cqe->i_flags = ISCSI_FLAG_CMD_UNDERFLOW;
1538
1539                 if (AMAP_GET_BITS(struct amap_sol_cqe_v2,
1540                                   o, psol))
1541                         csol_cqe->i_flags |= ISCSI_FLAG_CMD_OVERFLOW;
1542         }
1543 }
1544
1545
1546 static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn,
1547                              struct beiscsi_hba *phba, struct sol_cqe *psol)
1548 {
1549         struct hwi_wrb_context *pwrb_context;
1550         struct wrb_handle *pwrb_handle;
1551         struct iscsi_wrb *pwrb = NULL;
1552         struct hwi_controller *phwi_ctrlr;
1553         struct iscsi_task *task;
1554         unsigned int type;
1555         struct iscsi_conn *conn = beiscsi_conn->conn;
1556         struct iscsi_session *session = conn->session;
1557         struct common_sol_cqe csol_cqe = {0};
1558         uint16_t cri_index = 0;
1559
1560         phwi_ctrlr = phba->phwi_ctrlr;
1561
1562         /* Copy the elements to a common structure */
1563         adapter_get_sol_cqe(phba, psol, &csol_cqe);
1564
1565         cri_index = BE_GET_CRI_FROM_CID(csol_cqe.cid);
1566         pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1567
1568         pwrb_handle = pwrb_context->pwrb_handle_basestd[
1569                       csol_cqe.wrb_index];
1570
1571         task = pwrb_handle->pio_handle;
1572         pwrb = pwrb_handle->pwrb;
1573         type = ((struct beiscsi_io_task *)task->dd_data)->wrb_type;
1574
1575         spin_lock_bh(&session->back_lock);
1576         switch (type) {
1577         case HWH_TYPE_IO:
1578         case HWH_TYPE_IO_RD:
1579                 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) ==
1580                      ISCSI_OP_NOOP_OUT)
1581                         be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);
1582                 else
1583                         be_complete_io(beiscsi_conn, task, &csol_cqe);
1584                 break;
1585
1586         case HWH_TYPE_LOGOUT:
1587                 if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGOUT)
1588                         be_complete_logout(beiscsi_conn, task, &csol_cqe);
1589                 else
1590                         be_complete_tmf(beiscsi_conn, task, &csol_cqe);
1591                 break;
1592
1593         case HWH_TYPE_LOGIN:
1594                 beiscsi_log(phba, KERN_ERR,
1595                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1596                             "BM_%d :\t\t No HWH_TYPE_LOGIN Expected in"
1597                             " hwi_complete_cmd- Solicited path\n");
1598                 break;
1599
1600         case HWH_TYPE_NOP:
1601                 be_complete_nopin_resp(beiscsi_conn, task, &csol_cqe);
1602                 break;
1603
1604         default:
1605                 beiscsi_log(phba, KERN_WARNING,
1606                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1607                             "BM_%d : In hwi_complete_cmd, unknown type = %d"
1608                             "wrb_index 0x%x CID 0x%x\n", type,
1609                             csol_cqe.wrb_index,
1610                             csol_cqe.cid);
1611                 break;
1612         }
1613
1614         spin_unlock_bh(&session->back_lock);
1615 }
1616
1617 static struct list_head *hwi_get_async_busy_list(struct hwi_async_pdu_context
1618                                           *pasync_ctx, unsigned int is_header,
1619                                           unsigned int host_write_ptr)
1620 {
1621         if (is_header)
1622                 return &pasync_ctx->async_entry[host_write_ptr].
1623                     header_busy_list;
1624         else
1625                 return &pasync_ctx->async_entry[host_write_ptr].data_busy_list;
1626 }
1627
1628 static struct async_pdu_handle *
1629 hwi_get_async_handle(struct beiscsi_hba *phba,
1630                      struct beiscsi_conn *beiscsi_conn,
1631                      struct hwi_async_pdu_context *pasync_ctx,
1632                      struct i_t_dpdu_cqe *pdpdu_cqe, unsigned int *pcq_index)
1633 {
1634         struct be_bus_address phys_addr;
1635         struct list_head *pbusy_list;
1636         struct async_pdu_handle *pasync_handle = NULL;
1637         unsigned char is_header = 0;
1638         unsigned int index, dpl;
1639
1640         if (is_chip_be2_be3r(phba)) {
1641                 dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1642                                     dpl, pdpdu_cqe);
1643                 index = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe,
1644                                       index, pdpdu_cqe);
1645         } else {
1646                 dpl = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1647                                     dpl, pdpdu_cqe);
1648                 index = AMAP_GET_BITS(struct amap_i_t_dpdu_cqe_v2,
1649                                       index, pdpdu_cqe);
1650         }
1651
1652         phys_addr.u.a32.address_lo =
1653                 (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1654                                         db_addr_lo) / 32] - dpl);
1655         phys_addr.u.a32.address_hi =
1656                 pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1657                                        db_addr_hi) / 32];
1658
1659         phys_addr.u.a64.address =
1660                         *((unsigned long long *)(&phys_addr.u.a64.address));
1661
1662         switch (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, code) / 32]
1663                         & PDUCQE_CODE_MASK) {
1664         case UNSOL_HDR_NOTIFY:
1665                 is_header = 1;
1666
1667                  pbusy_list = hwi_get_async_busy_list(pasync_ctx,
1668                                                       is_header, index);
1669                 break;
1670         case UNSOL_DATA_NOTIFY:
1671                  pbusy_list = hwi_get_async_busy_list(pasync_ctx,
1672                                                       is_header, index);
1673                 break;
1674         default:
1675                 pbusy_list = NULL;
1676                 beiscsi_log(phba, KERN_WARNING,
1677                             BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
1678                             "BM_%d : Unexpected code=%d\n",
1679                             pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe,
1680                             code) / 32] & PDUCQE_CODE_MASK);
1681                 return NULL;
1682         }
1683
1684         WARN_ON(list_empty(pbusy_list));
1685         list_for_each_entry(pasync_handle, pbusy_list, link) {
1686                 if (pasync_handle->pa.u.a64.address == phys_addr.u.a64.address)
1687                         break;
1688         }
1689
1690         WARN_ON(!pasync_handle);
1691
1692         pasync_handle->cri = BE_GET_ASYNC_CRI_FROM_CID(
1693                              beiscsi_conn->beiscsi_conn_cid);
1694         pasync_handle->is_header = is_header;
1695         pasync_handle->buffer_len = dpl;
1696         *pcq_index = index;
1697
1698         return pasync_handle;
1699 }
1700
1701 static unsigned int
1702 hwi_update_async_writables(struct beiscsi_hba *phba,
1703                             struct hwi_async_pdu_context *pasync_ctx,
1704                             unsigned int is_header, unsigned int cq_index)
1705 {
1706         struct list_head *pbusy_list;
1707         struct async_pdu_handle *pasync_handle;
1708         unsigned int num_entries, writables = 0;
1709         unsigned int *pep_read_ptr, *pwritables;
1710
1711         num_entries = pasync_ctx->num_entries;
1712         if (is_header) {
1713                 pep_read_ptr = &pasync_ctx->async_header.ep_read_ptr;
1714                 pwritables = &pasync_ctx->async_header.writables;
1715         } else {
1716                 pep_read_ptr = &pasync_ctx->async_data.ep_read_ptr;
1717                 pwritables = &pasync_ctx->async_data.writables;
1718         }
1719
1720         while ((*pep_read_ptr) != cq_index) {
1721                 (*pep_read_ptr)++;
1722                 *pep_read_ptr = (*pep_read_ptr) % num_entries;
1723
1724                 pbusy_list = hwi_get_async_busy_list(pasync_ctx, is_header,
1725                                                      *pep_read_ptr);
1726                 if (writables == 0)
1727                         WARN_ON(list_empty(pbusy_list));
1728
1729                 if (!list_empty(pbusy_list)) {
1730                         pasync_handle = list_entry(pbusy_list->next,
1731                                                    struct async_pdu_handle,
1732                                                    link);
1733                         WARN_ON(!pasync_handle);
1734                         pasync_handle->consumed = 1;
1735                 }
1736
1737                 writables++;
1738         }
1739
1740         if (!writables) {
1741                 beiscsi_log(phba, KERN_ERR,
1742                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
1743                             "BM_%d : Duplicate notification received - index 0x%x!!\n",
1744                             cq_index);
1745                 WARN_ON(1);
1746         }
1747
1748         *pwritables = *pwritables + writables;
1749         return 0;
1750 }
1751
1752 static void hwi_free_async_msg(struct beiscsi_hba *phba,
1753                                struct hwi_async_pdu_context *pasync_ctx,
1754                                unsigned int cri)
1755 {
1756         struct async_pdu_handle *pasync_handle, *tmp_handle;
1757         struct list_head *plist;
1758
1759         plist  = &pasync_ctx->async_entry[cri].wait_queue.list;
1760         list_for_each_entry_safe(pasync_handle, tmp_handle, plist, link) {
1761                 list_del(&pasync_handle->link);
1762
1763                 if (pasync_handle->is_header) {
1764                         list_add_tail(&pasync_handle->link,
1765                                       &pasync_ctx->async_header.free_list);
1766                         pasync_ctx->async_header.free_entries++;
1767                 } else {
1768                         list_add_tail(&pasync_handle->link,
1769                                       &pasync_ctx->async_data.free_list);
1770                         pasync_ctx->async_data.free_entries++;
1771                 }
1772         }
1773
1774         INIT_LIST_HEAD(&pasync_ctx->async_entry[cri].wait_queue.list);
1775         pasync_ctx->async_entry[cri].wait_queue.hdr_received = 0;
1776         pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0;
1777 }
1778
1779 static struct phys_addr *
1780 hwi_get_ring_address(struct hwi_async_pdu_context *pasync_ctx,
1781                      unsigned int is_header, unsigned int host_write_ptr)
1782 {
1783         struct phys_addr *pasync_sge = NULL;
1784
1785         if (is_header)
1786                 pasync_sge = pasync_ctx->async_header.ring_base;
1787         else
1788                 pasync_sge = pasync_ctx->async_data.ring_base;
1789
1790         return pasync_sge + host_write_ptr;
1791 }
1792
1793 static void hwi_post_async_buffers(struct beiscsi_hba *phba,
1794                                     unsigned int is_header, uint8_t ulp_num)
1795 {
1796         struct hwi_controller *phwi_ctrlr;
1797         struct hwi_async_pdu_context *pasync_ctx;
1798         struct async_pdu_handle *pasync_handle;
1799         struct list_head *pfree_link, *pbusy_list;
1800         struct phys_addr *pasync_sge;
1801         unsigned int ring_id, num_entries;
1802         unsigned int host_write_num, doorbell_offset;
1803         unsigned int writables;
1804         unsigned int i = 0;
1805         u32 doorbell = 0;
1806
1807         phwi_ctrlr = phba->phwi_ctrlr;
1808         pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr, ulp_num);
1809         num_entries = pasync_ctx->num_entries;
1810
1811         if (is_header) {
1812                 writables = min(pasync_ctx->async_header.writables,
1813                                 pasync_ctx->async_header.free_entries);
1814                 pfree_link = pasync_ctx->async_header.free_list.next;
1815                 host_write_num = pasync_ctx->async_header.host_write_ptr;
1816                 ring_id = phwi_ctrlr->default_pdu_hdr[ulp_num].id;
1817                 doorbell_offset = phwi_ctrlr->default_pdu_hdr[ulp_num].
1818                                   doorbell_offset;
1819         } else {
1820                 writables = min(pasync_ctx->async_data.writables,
1821                                 pasync_ctx->async_data.free_entries);
1822                 pfree_link = pasync_ctx->async_data.free_list.next;
1823                 host_write_num = pasync_ctx->async_data.host_write_ptr;
1824                 ring_id = phwi_ctrlr->default_pdu_data[ulp_num].id;
1825                 doorbell_offset = phwi_ctrlr->default_pdu_data[ulp_num].
1826                                   doorbell_offset;
1827         }
1828
1829         writables = (writables / 8) * 8;
1830         if (writables) {
1831                 for (i = 0; i < writables; i++) {
1832                         pbusy_list =
1833                             hwi_get_async_busy_list(pasync_ctx, is_header,
1834                                                     host_write_num);
1835                         pasync_handle =
1836                             list_entry(pfree_link, struct async_pdu_handle,
1837                                                                 link);
1838                         WARN_ON(!pasync_handle);
1839                         pasync_handle->consumed = 0;
1840
1841                         pfree_link = pfree_link->next;
1842
1843                         pasync_sge = hwi_get_ring_address(pasync_ctx,
1844                                                 is_header, host_write_num);
1845
1846                         pasync_sge->hi = pasync_handle->pa.u.a32.address_lo;
1847                         pasync_sge->lo = pasync_handle->pa.u.a32.address_hi;
1848
1849                         list_move(&pasync_handle->link, pbusy_list);
1850
1851                         host_write_num++;
1852                         host_write_num = host_write_num % num_entries;
1853                 }
1854
1855                 if (is_header) {
1856                         pasync_ctx->async_header.host_write_ptr =
1857                                                         host_write_num;
1858                         pasync_ctx->async_header.free_entries -= writables;
1859                         pasync_ctx->async_header.writables -= writables;
1860                         pasync_ctx->async_header.busy_entries += writables;
1861                 } else {
1862                         pasync_ctx->async_data.host_write_ptr = host_write_num;
1863                         pasync_ctx->async_data.free_entries -= writables;
1864                         pasync_ctx->async_data.writables -= writables;
1865                         pasync_ctx->async_data.busy_entries += writables;
1866                 }
1867
1868                 doorbell |= ring_id & DB_DEF_PDU_RING_ID_MASK;
1869                 doorbell |= 1 << DB_DEF_PDU_REARM_SHIFT;
1870                 doorbell |= 0 << DB_DEF_PDU_EVENT_SHIFT;
1871                 doorbell |= (writables & DB_DEF_PDU_CQPROC_MASK)
1872                                         << DB_DEF_PDU_CQPROC_SHIFT;
1873
1874                 iowrite32(doorbell, phba->db_va + doorbell_offset);
1875         }
1876 }
1877
1878 static void hwi_flush_default_pdu_buffer(struct beiscsi_hba *phba,
1879                                          struct beiscsi_conn *beiscsi_conn,
1880                                          struct i_t_dpdu_cqe *pdpdu_cqe)
1881 {
1882         struct hwi_controller *phwi_ctrlr;
1883         struct hwi_async_pdu_context *pasync_ctx;
1884         struct async_pdu_handle *pasync_handle = NULL;
1885         unsigned int cq_index = -1;
1886         uint16_t cri_index = BE_GET_CRI_FROM_CID(
1887                              beiscsi_conn->beiscsi_conn_cid);
1888
1889         phwi_ctrlr = phba->phwi_ctrlr;
1890         pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr,
1891                      BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr,
1892                      cri_index));
1893
1894         pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx,
1895                                              pdpdu_cqe, &cq_index);
1896         BUG_ON(pasync_handle->is_header != 0);
1897         if (pasync_handle->consumed == 0)
1898                 hwi_update_async_writables(phba, pasync_ctx,
1899                                            pasync_handle->is_header, cq_index);
1900
1901         hwi_free_async_msg(phba, pasync_ctx, pasync_handle->cri);
1902         hwi_post_async_buffers(phba, pasync_handle->is_header,
1903                                BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr,
1904                                cri_index));
1905 }
1906
1907 static unsigned int
1908 hwi_fwd_async_msg(struct beiscsi_conn *beiscsi_conn,
1909                   struct beiscsi_hba *phba,
1910                   struct hwi_async_pdu_context *pasync_ctx, unsigned short cri)
1911 {
1912         struct list_head *plist;
1913         struct async_pdu_handle *pasync_handle;
1914         void *phdr = NULL;
1915         unsigned int hdr_len = 0, buf_len = 0;
1916         unsigned int status, index = 0, offset = 0;
1917         void *pfirst_buffer = NULL;
1918         unsigned int num_buf = 0;
1919
1920         plist = &pasync_ctx->async_entry[cri].wait_queue.list;
1921
1922         list_for_each_entry(pasync_handle, plist, link) {
1923                 if (index == 0) {
1924                         phdr = pasync_handle->pbuffer;
1925                         hdr_len = pasync_handle->buffer_len;
1926                 } else {
1927                         buf_len = pasync_handle->buffer_len;
1928                         if (!num_buf) {
1929                                 pfirst_buffer = pasync_handle->pbuffer;
1930                                 num_buf++;
1931                         }
1932                         memcpy(pfirst_buffer + offset,
1933                                pasync_handle->pbuffer, buf_len);
1934                         offset += buf_len;
1935                 }
1936                 index++;
1937         }
1938
1939         status = beiscsi_process_async_pdu(beiscsi_conn, phba,
1940                                             phdr, hdr_len, pfirst_buffer,
1941                                             offset);
1942
1943         hwi_free_async_msg(phba, pasync_ctx, cri);
1944         return 0;
1945 }
1946
1947 static unsigned int
1948 hwi_gather_async_pdu(struct beiscsi_conn *beiscsi_conn,
1949                      struct beiscsi_hba *phba,
1950                      struct async_pdu_handle *pasync_handle)
1951 {
1952         struct hwi_async_pdu_context *pasync_ctx;
1953         struct hwi_controller *phwi_ctrlr;
1954         unsigned int bytes_needed = 0, status = 0;
1955         unsigned short cri = pasync_handle->cri;
1956         struct pdu_base *ppdu;
1957
1958         phwi_ctrlr = phba->phwi_ctrlr;
1959         pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr,
1960                      BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr,
1961                      BE_GET_CRI_FROM_CID(beiscsi_conn->
1962                                  beiscsi_conn_cid)));
1963
1964         list_del(&pasync_handle->link);
1965         if (pasync_handle->is_header) {
1966                 pasync_ctx->async_header.busy_entries--;
1967                 if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) {
1968                         hwi_free_async_msg(phba, pasync_ctx, cri);
1969                         BUG();
1970                 }
1971
1972                 pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0;
1973                 pasync_ctx->async_entry[cri].wait_queue.hdr_received = 1;
1974                 pasync_ctx->async_entry[cri].wait_queue.hdr_len =
1975                                 (unsigned short)pasync_handle->buffer_len;
1976                 list_add_tail(&pasync_handle->link,
1977                               &pasync_ctx->async_entry[cri].wait_queue.list);
1978
1979                 ppdu = pasync_handle->pbuffer;
1980                 bytes_needed = ((((ppdu->dw[offsetof(struct amap_pdu_base,
1981                         data_len_hi) / 32] & PDUBASE_DATALENHI_MASK) << 8) &
1982                         0xFFFF0000) | ((be16_to_cpu((ppdu->
1983                         dw[offsetof(struct amap_pdu_base, data_len_lo) / 32]
1984                         & PDUBASE_DATALENLO_MASK) >> 16)) & 0x0000FFFF));
1985
1986                 if (status == 0) {
1987                         pasync_ctx->async_entry[cri].wait_queue.bytes_needed =
1988                             bytes_needed;
1989
1990                         if (bytes_needed == 0)
1991                                 status = hwi_fwd_async_msg(beiscsi_conn, phba,
1992                                                            pasync_ctx, cri);
1993                 }
1994         } else {
1995                 pasync_ctx->async_data.busy_entries--;
1996                 if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) {
1997                         list_add_tail(&pasync_handle->link,
1998                                       &pasync_ctx->async_entry[cri].wait_queue.
1999                                       list);
2000                         pasync_ctx->async_entry[cri].wait_queue.
2001                                 bytes_received +=
2002                                 (unsigned short)pasync_handle->buffer_len;
2003
2004                         if (pasync_ctx->async_entry[cri].wait_queue.
2005                             bytes_received >=
2006                             pasync_ctx->async_entry[cri].wait_queue.
2007                             bytes_needed)
2008                                 status = hwi_fwd_async_msg(beiscsi_conn, phba,
2009                                                            pasync_ctx, cri);
2010                 }
2011         }
2012         return status;
2013 }
2014
2015 static void hwi_process_default_pdu_ring(struct beiscsi_conn *beiscsi_conn,
2016                                          struct beiscsi_hba *phba,
2017                                          struct i_t_dpdu_cqe *pdpdu_cqe)
2018 {
2019         struct hwi_controller *phwi_ctrlr;
2020         struct hwi_async_pdu_context *pasync_ctx;
2021         struct async_pdu_handle *pasync_handle = NULL;
2022         unsigned int cq_index = -1;
2023         uint16_t cri_index = BE_GET_CRI_FROM_CID(
2024                              beiscsi_conn->beiscsi_conn_cid);
2025
2026         phwi_ctrlr = phba->phwi_ctrlr;
2027         pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr,
2028                      BEISCSI_GET_ULP_FROM_CRI(phwi_ctrlr,
2029                      cri_index));
2030
2031         pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx,
2032                                              pdpdu_cqe, &cq_index);
2033
2034         if (pasync_handle->consumed == 0)
2035                 hwi_update_async_writables(phba, pasync_ctx,
2036                                            pasync_handle->is_header, cq_index);
2037
2038         hwi_gather_async_pdu(beiscsi_conn, phba, pasync_handle);
2039         hwi_post_async_buffers(phba, pasync_handle->is_header,
2040                                BEISCSI_GET_ULP_FROM_CRI(
2041                                phwi_ctrlr, cri_index));
2042 }
2043
2044 void beiscsi_process_mcc_cq(struct beiscsi_hba *phba)
2045 {
2046         struct be_queue_info *mcc_cq;
2047         struct  be_mcc_compl *mcc_compl;
2048         unsigned int num_processed = 0;
2049
2050         mcc_cq = &phba->ctrl.mcc_obj.cq;
2051         mcc_compl = queue_tail_node(mcc_cq);
2052         mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
2053         while (mcc_compl->flags & CQE_FLAGS_VALID_MASK) {
2054                 if (num_processed >= 32) {
2055                         hwi_ring_cq_db(phba, mcc_cq->id,
2056                                         num_processed, 0);
2057                         num_processed = 0;
2058                 }
2059                 if (mcc_compl->flags & CQE_FLAGS_ASYNC_MASK) {
2060                         beiscsi_process_async_event(phba, mcc_compl);
2061                 } else if (mcc_compl->flags & CQE_FLAGS_COMPLETED_MASK) {
2062                         beiscsi_process_mcc_compl(&phba->ctrl, mcc_compl);
2063                 }
2064
2065                 mcc_compl->flags = 0;
2066                 queue_tail_inc(mcc_cq);
2067                 mcc_compl = queue_tail_node(mcc_cq);
2068                 mcc_compl->flags = le32_to_cpu(mcc_compl->flags);
2069                 num_processed++;
2070         }
2071
2072         if (num_processed > 0)
2073                 hwi_ring_cq_db(phba, mcc_cq->id, num_processed, 1);
2074 }
2075
2076 /**
2077  * beiscsi_process_cq()- Process the Completion Queue
2078  * @pbe_eq: Event Q on which the Completion has come
2079  * @budget: Max number of events to processed
2080  *
2081  * return
2082  *     Number of Completion Entries processed.
2083  **/
2084 unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq, int budget)
2085 {
2086         struct be_queue_info *cq;
2087         struct sol_cqe *sol;
2088         struct dmsg_cqe *dmsg;
2089         unsigned int total = 0;
2090         unsigned int num_processed = 0;
2091         unsigned short code = 0, cid = 0;
2092         uint16_t cri_index = 0;
2093         struct beiscsi_conn *beiscsi_conn;
2094         struct beiscsi_endpoint *beiscsi_ep;
2095         struct iscsi_endpoint *ep;
2096         struct beiscsi_hba *phba;
2097
2098         cq = pbe_eq->cq;
2099         sol = queue_tail_node(cq);
2100         phba = pbe_eq->phba;
2101
2102         while (sol->dw[offsetof(struct amap_sol_cqe, valid) / 32] &
2103                CQE_VALID_MASK) {
2104                 be_dws_le_to_cpu(sol, sizeof(struct sol_cqe));
2105
2106                  code = (sol->dw[offsetof(struct amap_sol_cqe, code) /
2107                          32] & CQE_CODE_MASK);
2108
2109                  /* Get the CID */
2110                 if (is_chip_be2_be3r(phba)) {
2111                         cid = AMAP_GET_BITS(struct amap_sol_cqe, cid, sol);
2112                 } else {
2113                         if ((code == DRIVERMSG_NOTIFY) ||
2114                             (code == UNSOL_HDR_NOTIFY) ||
2115                             (code == UNSOL_DATA_NOTIFY))
2116                                 cid = AMAP_GET_BITS(
2117                                                     struct amap_i_t_dpdu_cqe_v2,
2118                                                     cid, sol);
2119                          else
2120                                  cid = AMAP_GET_BITS(struct amap_sol_cqe_v2,
2121                                                      cid, sol);
2122                 }
2123
2124                 cri_index = BE_GET_CRI_FROM_CID(cid);
2125                 ep = phba->ep_array[cri_index];
2126
2127                 if (ep == NULL) {
2128                         /* connection has already been freed
2129                          * just move on to next one
2130                          */
2131                         beiscsi_log(phba, KERN_WARNING,
2132                                     BEISCSI_LOG_INIT,
2133                                     "BM_%d : proc cqe of disconn ep: cid %d\n",
2134                                     cid);
2135                         goto proc_next_cqe;
2136                 }
2137
2138                 beiscsi_ep = ep->dd_data;
2139                 beiscsi_conn = beiscsi_ep->conn;
2140
2141                 /* replenish cq */
2142                 if (num_processed == 32) {
2143                         hwi_ring_cq_db(phba, cq->id, 32, 0);
2144                         num_processed = 0;
2145                 }
2146                 total++;
2147
2148                 switch (code) {
2149                 case SOL_CMD_COMPLETE:
2150                         hwi_complete_cmd(beiscsi_conn, phba, sol);
2151                         break;
2152                 case DRIVERMSG_NOTIFY:
2153                         beiscsi_log(phba, KERN_INFO,
2154                                     BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2155                                     "BM_%d : Received %s[%d] on CID : %d\n",
2156                                     cqe_desc[code], code, cid);
2157
2158                         dmsg = (struct dmsg_cqe *)sol;
2159                         hwi_complete_drvr_msgs(beiscsi_conn, phba, sol);
2160                         break;
2161                 case UNSOL_HDR_NOTIFY:
2162                         beiscsi_log(phba, KERN_INFO,
2163                                     BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2164                                     "BM_%d : Received %s[%d] on CID : %d\n",
2165                                     cqe_desc[code], code, cid);
2166
2167                         spin_lock_bh(&phba->async_pdu_lock);
2168                         hwi_process_default_pdu_ring(beiscsi_conn, phba,
2169                                              (struct i_t_dpdu_cqe *)sol);
2170                         spin_unlock_bh(&phba->async_pdu_lock);
2171                         break;
2172                 case UNSOL_DATA_NOTIFY:
2173                         beiscsi_log(phba, KERN_INFO,
2174                                     BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
2175                                     "BM_%d : Received %s[%d] on CID : %d\n",
2176                                     cqe_desc[code], code, cid);
2177
2178                         spin_lock_bh(&phba->async_pdu_lock);
2179                         hwi_process_default_pdu_ring(beiscsi_conn, phba,
2180                                              (struct i_t_dpdu_cqe *)sol);
2181                         spin_unlock_bh(&phba->async_pdu_lock);
2182                         break;
2183                 case CXN_INVALIDATE_INDEX_NOTIFY:
2184                 case CMD_INVALIDATED_NOTIFY:
2185                 case CXN_INVALIDATE_NOTIFY:
2186                         beiscsi_log(phba, KERN_ERR,
2187                                     BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2188                                     "BM_%d : Ignoring %s[%d] on CID : %d\n",
2189                                     cqe_desc[code], code, cid);
2190                         break;
2191                 case CXN_KILLED_HDR_DIGEST_ERR:
2192                 case SOL_CMD_KILLED_DATA_DIGEST_ERR:
2193                         beiscsi_log(phba, KERN_ERR,
2194                                     BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
2195                                     "BM_%d : Cmd Notification %s[%d] on CID : %d\n",
2196                                     cqe_desc[code], code,  cid);
2197                         break;
2198                 case CMD_KILLED_INVALID_STATSN_RCVD:
2199                 case CMD_KILLED_INVALID_R2T_RCVD:
2200                 case CMD_CXN_KILLED_LUN_INVALID:
2201                 case CMD_CXN_KILLED_ICD_INVALID:
2202                 case CMD_CXN_KILLED_ITT_INVALID:
2203                 case CMD_CXN_KILLED_SEQ_OUTOFORDER:
2204                 case CMD_CXN_KILLED_INVALID_DATASN_RCVD:
2205                         beiscsi_log(phba, KERN_ERR,
2206                                     BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
2207                                     "BM_%d : Cmd Notification %s[%d] on CID : %d\n",
2208                                     cqe_desc[code], code,  cid);
2209                         break;
2210                 case UNSOL_DATA_DIGEST_ERROR_NOTIFY:
2211                         beiscsi_log(phba, KERN_ERR,
2212                                     BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2213                                     "BM_%d :  Dropping %s[%d] on DPDU ring on CID : %d\n",
2214                                     cqe_desc[code], code, cid);
2215                         spin_lock_bh(&phba->async_pdu_lock);
2216                         hwi_flush_default_pdu_buffer(phba, beiscsi_conn,
2217                                              (struct i_t_dpdu_cqe *) sol);
2218                         spin_unlock_bh(&phba->async_pdu_lock);
2219                         break;
2220                 case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL:
2221                 case CXN_KILLED_BURST_LEN_MISMATCH:
2222                 case CXN_KILLED_AHS_RCVD:
2223                 case CXN_KILLED_UNKNOWN_HDR:
2224                 case CXN_KILLED_STALE_ITT_TTT_RCVD:
2225                 case CXN_KILLED_INVALID_ITT_TTT_RCVD:
2226                 case CXN_KILLED_TIMED_OUT:
2227                 case CXN_KILLED_FIN_RCVD:
2228                 case CXN_KILLED_RST_SENT:
2229                 case CXN_KILLED_RST_RCVD:
2230                 case CXN_KILLED_BAD_UNSOL_PDU_RCVD:
2231                 case CXN_KILLED_BAD_WRB_INDEX_ERROR:
2232                 case CXN_KILLED_OVER_RUN_RESIDUAL:
2233                 case CXN_KILLED_UNDER_RUN_RESIDUAL:
2234                 case CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN:
2235                         beiscsi_log(phba, KERN_ERR,
2236                                     BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2237                                     "BM_%d : Event %s[%d] received on CID : %d\n",
2238                                     cqe_desc[code], code, cid);
2239                         if (beiscsi_conn)
2240                                 iscsi_conn_failure(beiscsi_conn->conn,
2241                                                    ISCSI_ERR_CONN_FAILED);
2242                         break;
2243                 default:
2244                         beiscsi_log(phba, KERN_ERR,
2245                                     BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
2246                                     "BM_%d : Invalid CQE Event Received Code : %d"
2247                                     "CID 0x%x...\n",
2248                                     code, cid);
2249                         break;
2250                 }
2251
2252 proc_next_cqe:
2253                 AMAP_SET_BITS(struct amap_sol_cqe, valid, sol, 0);
2254                 queue_tail_inc(cq);
2255                 sol = queue_tail_node(cq);
2256                 num_processed++;
2257                 if (total == budget)
2258                         break;
2259         }
2260
2261         hwi_ring_cq_db(phba, cq->id, num_processed, 1);
2262         return total;
2263 }
2264
2265 void beiscsi_process_all_cqs(struct work_struct *work)
2266 {
2267         unsigned long flags;
2268         struct hwi_controller *phwi_ctrlr;
2269         struct hwi_context_memory *phwi_context;
2270         struct beiscsi_hba *phba;
2271         struct be_eq_obj *pbe_eq =
2272             container_of(work, struct be_eq_obj, work_cqs);
2273
2274         phba = pbe_eq->phba;
2275         phwi_ctrlr = phba->phwi_ctrlr;
2276         phwi_context = phwi_ctrlr->phwi_ctxt;
2277
2278         if (pbe_eq->todo_mcc_cq) {
2279                 spin_lock_irqsave(&phba->isr_lock, flags);
2280                 pbe_eq->todo_mcc_cq = false;
2281                 spin_unlock_irqrestore(&phba->isr_lock, flags);
2282                 beiscsi_process_mcc_cq(phba);
2283         }
2284
2285         if (pbe_eq->todo_cq) {
2286                 spin_lock_irqsave(&phba->isr_lock, flags);
2287                 pbe_eq->todo_cq = false;
2288                 spin_unlock_irqrestore(&phba->isr_lock, flags);
2289                 beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC);
2290         }
2291
2292         /* rearm EQ for further interrupts */
2293         hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
2294 }
2295
2296 static int be_iopoll(struct irq_poll *iop, int budget)
2297 {
2298         unsigned int ret, num_eq_processed;
2299         struct beiscsi_hba *phba;
2300         struct be_eq_obj *pbe_eq;
2301         struct be_eq_entry *eqe = NULL;
2302         struct be_queue_info *eq;
2303
2304         num_eq_processed = 0;
2305         pbe_eq = container_of(iop, struct be_eq_obj, iopoll);
2306         phba = pbe_eq->phba;
2307         eq = &pbe_eq->q;
2308         eqe = queue_tail_node(eq);
2309
2310         while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] &
2311                         EQE_VALID_MASK) {
2312                 AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
2313                 queue_tail_inc(eq);
2314                 eqe = queue_tail_node(eq);
2315                 num_eq_processed++;
2316         }
2317
2318         hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 0, 1);
2319
2320         ret = beiscsi_process_cq(pbe_eq, budget);
2321         pbe_eq->cq_count += ret;
2322         if (ret < budget) {
2323                 irq_poll_complete(iop);
2324                 beiscsi_log(phba, KERN_INFO,
2325                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_IO,
2326                             "BM_%d : rearm pbe_eq->q.id =%d ret %d\n",
2327                             pbe_eq->q.id, ret);
2328                 hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1);
2329         }
2330         return ret;
2331 }
2332
2333 static void
2334 hwi_write_sgl_v2(struct iscsi_wrb *pwrb, struct scatterlist *sg,
2335                   unsigned int num_sg, struct beiscsi_io_task *io_task)
2336 {
2337         struct iscsi_sge *psgl;
2338         unsigned int sg_len, index;
2339         unsigned int sge_len = 0;
2340         unsigned long long addr;
2341         struct scatterlist *l_sg;
2342         unsigned int offset;
2343
2344         AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_lo, pwrb,
2345                       io_task->bhs_pa.u.a32.address_lo);
2346         AMAP_SET_BITS(struct amap_iscsi_wrb_v2, iscsi_bhs_addr_hi, pwrb,
2347                       io_task->bhs_pa.u.a32.address_hi);
2348
2349         l_sg = sg;
2350         for (index = 0; (index < num_sg) && (index < 2); index++,
2351                         sg = sg_next(sg)) {
2352                 if (index == 0) {
2353                         sg_len = sg_dma_len(sg);
2354                         addr = (u64) sg_dma_address(sg);
2355                         AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2356                                       sge0_addr_lo, pwrb,
2357                                       lower_32_bits(addr));
2358                         AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2359                                       sge0_addr_hi, pwrb,
2360                                       upper_32_bits(addr));
2361                         AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2362                                       sge0_len, pwrb,
2363                                       sg_len);
2364                         sge_len = sg_len;
2365                 } else {
2366                         AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_r2t_offset,
2367                                       pwrb, sge_len);
2368                         sg_len = sg_dma_len(sg);
2369                         addr = (u64) sg_dma_address(sg);
2370                         AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2371                                       sge1_addr_lo, pwrb,
2372                                       lower_32_bits(addr));
2373                         AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2374                                       sge1_addr_hi, pwrb,
2375                                       upper_32_bits(addr));
2376                         AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
2377                                       sge1_len, pwrb,
2378                                       sg_len);
2379                 }
2380         }
2381         psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2382         memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
2383
2384         AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
2385
2386         AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2387                       io_task->bhs_pa.u.a32.address_hi);
2388         AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2389                       io_task->bhs_pa.u.a32.address_lo);
2390
2391         if (num_sg == 1) {
2392                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2393                               1);
2394                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2395                               0);
2396         } else if (num_sg == 2) {
2397                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2398                               0);
2399                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2400                               1);
2401         } else {
2402                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge0_last, pwrb,
2403                               0);
2404                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sge1_last, pwrb,
2405                               0);
2406         }
2407
2408         sg = l_sg;
2409         psgl++;
2410         psgl++;
2411         offset = 0;
2412         for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
2413                 sg_len = sg_dma_len(sg);
2414                 addr = (u64) sg_dma_address(sg);
2415                 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2416                               lower_32_bits(addr));
2417                 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2418                               upper_32_bits(addr));
2419                 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
2420                 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
2421                 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2422                 offset += sg_len;
2423         }
2424         psgl--;
2425         AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2426 }
2427
2428 static void
2429 hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg,
2430               unsigned int num_sg, struct beiscsi_io_task *io_task)
2431 {
2432         struct iscsi_sge *psgl;
2433         unsigned int sg_len, index;
2434         unsigned int sge_len = 0;
2435         unsigned long long addr;
2436         struct scatterlist *l_sg;
2437         unsigned int offset;
2438
2439         AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2440                                       io_task->bhs_pa.u.a32.address_lo);
2441         AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2442                                       io_task->bhs_pa.u.a32.address_hi);
2443
2444         l_sg = sg;
2445         for (index = 0; (index < num_sg) && (index < 2); index++,
2446                                                          sg = sg_next(sg)) {
2447                 if (index == 0) {
2448                         sg_len = sg_dma_len(sg);
2449                         addr = (u64) sg_dma_address(sg);
2450                         AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2451                                                 ((u32)(addr & 0xFFFFFFFF)));
2452                         AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2453                                                         ((u32)(addr >> 32)));
2454                         AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2455                                                         sg_len);
2456                         sge_len = sg_len;
2457                 } else {
2458                         AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_r2t_offset,
2459                                                         pwrb, sge_len);
2460                         sg_len = sg_dma_len(sg);
2461                         addr = (u64) sg_dma_address(sg);
2462                         AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_lo, pwrb,
2463                                                 ((u32)(addr & 0xFFFFFFFF)));
2464                         AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_hi, pwrb,
2465                                                         ((u32)(addr >> 32)));
2466                         AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_len, pwrb,
2467                                                         sg_len);
2468                 }
2469         }
2470         psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2471         memset(psgl, 0, sizeof(*psgl) * BE2_SGE);
2472
2473         AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2);
2474
2475         AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2476                         io_task->bhs_pa.u.a32.address_hi);
2477         AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2478                         io_task->bhs_pa.u.a32.address_lo);
2479
2480         if (num_sg == 1) {
2481                 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2482                                                                 1);
2483                 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2484                                                                 0);
2485         } else if (num_sg == 2) {
2486                 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2487                                                                 0);
2488                 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2489                                                                 1);
2490         } else {
2491                 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb,
2492                                                                 0);
2493                 AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb,
2494                                                                 0);
2495         }
2496         sg = l_sg;
2497         psgl++;
2498         psgl++;
2499         offset = 0;
2500         for (index = 0; index < num_sg; index++, sg = sg_next(sg), psgl++) {
2501                 sg_len = sg_dma_len(sg);
2502                 addr = (u64) sg_dma_address(sg);
2503                 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2504                                                 (addr & 0xFFFFFFFF));
2505                 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2506                                                 (addr >> 32));
2507                 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len);
2508                 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset);
2509                 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2510                 offset += sg_len;
2511         }
2512         psgl--;
2513         AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2514 }
2515
2516 /**
2517  * hwi_write_buffer()- Populate the WRB with task info
2518  * @pwrb: ptr to the WRB entry
2519  * @task: iscsi task which is to be executed
2520  **/
2521 static int hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task)
2522 {
2523         struct iscsi_sge *psgl;
2524         struct beiscsi_io_task *io_task = task->dd_data;
2525         struct beiscsi_conn *beiscsi_conn = io_task->conn;
2526         struct beiscsi_hba *phba = beiscsi_conn->phba;
2527         uint8_t dsp_value = 0;
2528
2529         io_task->bhs_len = sizeof(struct be_nonio_bhs) - 2;
2530         AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb,
2531                                 io_task->bhs_pa.u.a32.address_lo);
2532         AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb,
2533                                 io_task->bhs_pa.u.a32.address_hi);
2534
2535         if (task->data) {
2536
2537                 /* Check for the data_count */
2538                 dsp_value = (task->data_count) ? 1 : 0;
2539
2540                 if (is_chip_be2_be3r(phba))
2541                         AMAP_SET_BITS(struct amap_iscsi_wrb, dsp,
2542                                       pwrb, dsp_value);
2543                 else
2544                         AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp,
2545                                       pwrb, dsp_value);
2546
2547                 /* Map addr only if there is data_count */
2548                 if (dsp_value) {
2549                         io_task->mtask_addr = pci_map_single(phba->pcidev,
2550                                                              task->data,
2551                                                              task->data_count,
2552                                                              PCI_DMA_TODEVICE);
2553                         if (pci_dma_mapping_error(phba->pcidev,
2554                                                   io_task->mtask_addr))
2555                                 return -ENOMEM;
2556                         io_task->mtask_data_count = task->data_count;
2557                 } else
2558                         io_task->mtask_addr = 0;
2559
2560                 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb,
2561                               lower_32_bits(io_task->mtask_addr));
2562                 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb,
2563                               upper_32_bits(io_task->mtask_addr));
2564                 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb,
2565                                                 task->data_count);
2566
2567                 AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, 1);
2568         } else {
2569                 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
2570                 io_task->mtask_addr = 0;
2571         }
2572
2573         psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag;
2574
2575         AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len);
2576
2577         AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2578                       io_task->bhs_pa.u.a32.address_hi);
2579         AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2580                       io_task->bhs_pa.u.a32.address_lo);
2581         if (task->data) {
2582                 psgl++;
2583                 AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, 0);
2584                 AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, 0);
2585                 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0);
2586                 AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, 0);
2587                 AMAP_SET_BITS(struct amap_iscsi_sge, rsvd0, psgl, 0);
2588                 AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0);
2589
2590                 psgl++;
2591                 if (task->data) {
2592                         AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl,
2593                                       lower_32_bits(io_task->mtask_addr));
2594                         AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl,
2595                                       upper_32_bits(io_task->mtask_addr));
2596                 }
2597                 AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0x106);
2598         }
2599         AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1);
2600         return 0;
2601 }
2602
2603 /**
2604  * beiscsi_find_mem_req()- Find mem needed
2605  * @phba: ptr to HBA struct
2606  **/
2607 static void beiscsi_find_mem_req(struct beiscsi_hba *phba)
2608 {
2609         uint8_t mem_descr_index, ulp_num;
2610         unsigned int num_cq_pages, num_async_pdu_buf_pages;
2611         unsigned int num_async_pdu_data_pages, wrb_sz_per_cxn;
2612         unsigned int num_async_pdu_buf_sgl_pages, num_async_pdu_data_sgl_pages;
2613
2614         num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \
2615                                       sizeof(struct sol_cqe));
2616
2617         phba->params.hwi_ws_sz = sizeof(struct hwi_controller);
2618
2619         phba->mem_req[ISCSI_MEM_GLOBAL_HEADER] = 2 *
2620                                                  BE_ISCSI_PDU_HEADER_SIZE;
2621         phba->mem_req[HWI_MEM_ADDN_CONTEXT] =
2622                                             sizeof(struct hwi_context_memory);
2623
2624
2625         phba->mem_req[HWI_MEM_WRB] = sizeof(struct iscsi_wrb)
2626             * (phba->params.wrbs_per_cxn)
2627             * phba->params.cxns_per_ctrl;
2628         wrb_sz_per_cxn =  sizeof(struct wrb_handle) *
2629                                  (phba->params.wrbs_per_cxn);
2630         phba->mem_req[HWI_MEM_WRBH] = roundup_pow_of_two((wrb_sz_per_cxn) *
2631                                 phba->params.cxns_per_ctrl);
2632
2633         phba->mem_req[HWI_MEM_SGLH] = sizeof(struct sgl_handle) *
2634                 phba->params.icds_per_ctrl;
2635         phba->mem_req[HWI_MEM_SGE] = sizeof(struct iscsi_sge) *
2636                 phba->params.num_sge_per_io * phba->params.icds_per_ctrl;
2637         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
2638                 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
2639
2640                         num_async_pdu_buf_sgl_pages =
2641                                 PAGES_REQUIRED(BEISCSI_GET_CID_COUNT(
2642                                                phba, ulp_num) *
2643                                                sizeof(struct phys_addr));
2644
2645                         num_async_pdu_buf_pages =
2646                                 PAGES_REQUIRED(BEISCSI_GET_CID_COUNT(
2647                                                phba, ulp_num) *
2648                                                phba->params.defpdu_hdr_sz);
2649
2650                         num_async_pdu_data_pages =
2651                                 PAGES_REQUIRED(BEISCSI_GET_CID_COUNT(
2652                                                phba, ulp_num) *
2653                                                phba->params.defpdu_data_sz);
2654
2655                         num_async_pdu_data_sgl_pages =
2656                                 PAGES_REQUIRED(BEISCSI_GET_CID_COUNT(
2657                                                phba, ulp_num) *
2658                                                sizeof(struct phys_addr));
2659
2660                         mem_descr_index = (HWI_MEM_TEMPLATE_HDR_ULP0 +
2661                                           (ulp_num * MEM_DESCR_OFFSET));
2662                         phba->mem_req[mem_descr_index] =
2663                                         BEISCSI_GET_CID_COUNT(phba, ulp_num) *
2664                                         BEISCSI_TEMPLATE_HDR_PER_CXN_SIZE;
2665
2666                         mem_descr_index = (HWI_MEM_ASYNC_HEADER_BUF_ULP0 +
2667                                           (ulp_num * MEM_DESCR_OFFSET));
2668                         phba->mem_req[mem_descr_index] =
2669                                           num_async_pdu_buf_pages *
2670                                           PAGE_SIZE;
2671
2672                         mem_descr_index = (HWI_MEM_ASYNC_DATA_BUF_ULP0 +
2673                                           (ulp_num * MEM_DESCR_OFFSET));
2674                         phba->mem_req[mem_descr_index] =
2675                                           num_async_pdu_data_pages *
2676                                           PAGE_SIZE;
2677
2678                         mem_descr_index = (HWI_MEM_ASYNC_HEADER_RING_ULP0 +
2679                                           (ulp_num * MEM_DESCR_OFFSET));
2680                         phba->mem_req[mem_descr_index] =
2681                                           num_async_pdu_buf_sgl_pages *
2682                                           PAGE_SIZE;
2683
2684                         mem_descr_index = (HWI_MEM_ASYNC_DATA_RING_ULP0 +
2685                                           (ulp_num * MEM_DESCR_OFFSET));
2686                         phba->mem_req[mem_descr_index] =
2687                                           num_async_pdu_data_sgl_pages *
2688                                           PAGE_SIZE;
2689
2690                         mem_descr_index = (HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +
2691                                           (ulp_num * MEM_DESCR_OFFSET));
2692                         phba->mem_req[mem_descr_index] =
2693                                           BEISCSI_GET_CID_COUNT(phba, ulp_num) *
2694                                           sizeof(struct async_pdu_handle);
2695
2696                         mem_descr_index = (HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +
2697                                           (ulp_num * MEM_DESCR_OFFSET));
2698                         phba->mem_req[mem_descr_index] =
2699                                           BEISCSI_GET_CID_COUNT(phba, ulp_num) *
2700                                           sizeof(struct async_pdu_handle);
2701
2702                         mem_descr_index = (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +
2703                                           (ulp_num * MEM_DESCR_OFFSET));
2704                         phba->mem_req[mem_descr_index] =
2705                                           sizeof(struct hwi_async_pdu_context) +
2706                                          (BEISCSI_GET_CID_COUNT(phba, ulp_num) *
2707                                           sizeof(struct hwi_async_entry));
2708                 }
2709         }
2710 }
2711
2712 static int beiscsi_alloc_mem(struct beiscsi_hba *phba)
2713 {
2714         dma_addr_t bus_add;
2715         struct hwi_controller *phwi_ctrlr;
2716         struct be_mem_descriptor *mem_descr;
2717         struct mem_array *mem_arr, *mem_arr_orig;
2718         unsigned int i, j, alloc_size, curr_alloc_size;
2719
2720         phba->phwi_ctrlr = kzalloc(phba->params.hwi_ws_sz, GFP_KERNEL);
2721         if (!phba->phwi_ctrlr)
2722                 return -ENOMEM;
2723
2724         /* Allocate memory for wrb_context */
2725         phwi_ctrlr = phba->phwi_ctrlr;
2726         phwi_ctrlr->wrb_context = kzalloc(sizeof(struct hwi_wrb_context) *
2727                                           phba->params.cxns_per_ctrl,
2728                                           GFP_KERNEL);
2729         if (!phwi_ctrlr->wrb_context) {
2730                 kfree(phba->phwi_ctrlr);
2731                 return -ENOMEM;
2732         }
2733
2734         phba->init_mem = kcalloc(SE_MEM_MAX, sizeof(*mem_descr),
2735                                  GFP_KERNEL);
2736         if (!phba->init_mem) {
2737                 kfree(phwi_ctrlr->wrb_context);
2738                 kfree(phba->phwi_ctrlr);
2739                 return -ENOMEM;
2740         }
2741
2742         mem_arr_orig = kmalloc(sizeof(*mem_arr_orig) * BEISCSI_MAX_FRAGS_INIT,
2743                                GFP_KERNEL);
2744         if (!mem_arr_orig) {
2745                 kfree(phba->init_mem);
2746                 kfree(phwi_ctrlr->wrb_context);
2747                 kfree(phba->phwi_ctrlr);
2748                 return -ENOMEM;
2749         }
2750
2751         mem_descr = phba->init_mem;
2752         for (i = 0; i < SE_MEM_MAX; i++) {
2753                 if (!phba->mem_req[i]) {
2754                         mem_descr->mem_array = NULL;
2755                         mem_descr++;
2756                         continue;
2757                 }
2758
2759                 j = 0;
2760                 mem_arr = mem_arr_orig;
2761                 alloc_size = phba->mem_req[i];
2762                 memset(mem_arr, 0, sizeof(struct mem_array) *
2763                        BEISCSI_MAX_FRAGS_INIT);
2764                 curr_alloc_size = min(be_max_phys_size * 1024, alloc_size);
2765                 do {
2766                         mem_arr->virtual_address = pci_alloc_consistent(
2767                                                         phba->pcidev,
2768                                                         curr_alloc_size,
2769                                                         &bus_add);
2770                         if (!mem_arr->virtual_address) {
2771                                 if (curr_alloc_size <= BE_MIN_MEM_SIZE)
2772                                         goto free_mem;
2773                                 if (curr_alloc_size -
2774                                         rounddown_pow_of_two(curr_alloc_size))
2775                                         curr_alloc_size = rounddown_pow_of_two
2776                                                              (curr_alloc_size);
2777                                 else
2778                                         curr_alloc_size = curr_alloc_size / 2;
2779                         } else {
2780                                 mem_arr->bus_address.u.
2781                                     a64.address = (__u64) bus_add;
2782                                 mem_arr->size = curr_alloc_size;
2783                                 alloc_size -= curr_alloc_size;
2784                                 curr_alloc_size = min(be_max_phys_size *
2785                                                       1024, alloc_size);
2786                                 j++;
2787                                 mem_arr++;
2788                         }
2789                 } while (alloc_size);
2790                 mem_descr->num_elements = j;
2791                 mem_descr->size_in_bytes = phba->mem_req[i];
2792                 mem_descr->mem_array = kmalloc(sizeof(*mem_arr) * j,
2793                                                GFP_KERNEL);
2794                 if (!mem_descr->mem_array)
2795                         goto free_mem;
2796
2797                 memcpy(mem_descr->mem_array, mem_arr_orig,
2798                        sizeof(struct mem_array) * j);
2799                 mem_descr++;
2800         }
2801         kfree(mem_arr_orig);
2802         return 0;
2803 free_mem:
2804         mem_descr->num_elements = j;
2805         while ((i) || (j)) {
2806                 for (j = mem_descr->num_elements; j > 0; j--) {
2807                         pci_free_consistent(phba->pcidev,
2808                                             mem_descr->mem_array[j - 1].size,
2809                                             mem_descr->mem_array[j - 1].
2810                                             virtual_address,
2811                                             (unsigned long)mem_descr->
2812                                             mem_array[j - 1].
2813                                             bus_address.u.a64.address);
2814                 }
2815                 if (i) {
2816                         i--;
2817                         kfree(mem_descr->mem_array);
2818                         mem_descr--;
2819                 }
2820         }
2821         kfree(mem_arr_orig);
2822         kfree(phba->init_mem);
2823         kfree(phba->phwi_ctrlr->wrb_context);
2824         kfree(phba->phwi_ctrlr);
2825         return -ENOMEM;
2826 }
2827
2828 static int beiscsi_get_memory(struct beiscsi_hba *phba)
2829 {
2830         beiscsi_find_mem_req(phba);
2831         return beiscsi_alloc_mem(phba);
2832 }
2833
2834 static void iscsi_init_global_templates(struct beiscsi_hba *phba)
2835 {
2836         struct pdu_data_out *pdata_out;
2837         struct pdu_nop_out *pnop_out;
2838         struct be_mem_descriptor *mem_descr;
2839
2840         mem_descr = phba->init_mem;
2841         mem_descr += ISCSI_MEM_GLOBAL_HEADER;
2842         pdata_out =
2843             (struct pdu_data_out *)mem_descr->mem_array[0].virtual_address;
2844         memset(pdata_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2845
2846         AMAP_SET_BITS(struct amap_pdu_data_out, opcode, pdata_out,
2847                       IIOC_SCSI_DATA);
2848
2849         pnop_out =
2850             (struct pdu_nop_out *)((unsigned char *)mem_descr->mem_array[0].
2851                                    virtual_address + BE_ISCSI_PDU_HEADER_SIZE);
2852
2853         memset(pnop_out, 0, BE_ISCSI_PDU_HEADER_SIZE);
2854         AMAP_SET_BITS(struct amap_pdu_nop_out, ttt, pnop_out, 0xFFFFFFFF);
2855         AMAP_SET_BITS(struct amap_pdu_nop_out, f_bit, pnop_out, 1);
2856         AMAP_SET_BITS(struct amap_pdu_nop_out, i_bit, pnop_out, 0);
2857 }
2858
2859 static int beiscsi_init_wrb_handle(struct beiscsi_hba *phba)
2860 {
2861         struct be_mem_descriptor *mem_descr_wrbh, *mem_descr_wrb;
2862         struct hwi_context_memory *phwi_ctxt;
2863         struct wrb_handle *pwrb_handle = NULL;
2864         struct hwi_controller *phwi_ctrlr;
2865         struct hwi_wrb_context *pwrb_context;
2866         struct iscsi_wrb *pwrb = NULL;
2867         unsigned int num_cxn_wrbh = 0;
2868         unsigned int num_cxn_wrb = 0, j, idx = 0, index;
2869
2870         mem_descr_wrbh = phba->init_mem;
2871         mem_descr_wrbh += HWI_MEM_WRBH;
2872
2873         mem_descr_wrb = phba->init_mem;
2874         mem_descr_wrb += HWI_MEM_WRB;
2875         phwi_ctrlr = phba->phwi_ctrlr;
2876
2877         /* Allocate memory for WRBQ */
2878         phwi_ctxt = phwi_ctrlr->phwi_ctxt;
2879         phwi_ctxt->be_wrbq = kzalloc(sizeof(struct be_queue_info) *
2880                                      phba->params.cxns_per_ctrl,
2881                                      GFP_KERNEL);
2882         if (!phwi_ctxt->be_wrbq) {
2883                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2884                             "BM_%d : WRBQ Mem Alloc Failed\n");
2885                 return -ENOMEM;
2886         }
2887
2888         for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
2889                 pwrb_context = &phwi_ctrlr->wrb_context[index];
2890                 pwrb_context->pwrb_handle_base =
2891                                 kzalloc(sizeof(struct wrb_handle *) *
2892                                         phba->params.wrbs_per_cxn, GFP_KERNEL);
2893                 if (!pwrb_context->pwrb_handle_base) {
2894                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2895                                     "BM_%d : Mem Alloc Failed. Failing to load\n");
2896                         goto init_wrb_hndl_failed;
2897                 }
2898                 pwrb_context->pwrb_handle_basestd =
2899                                 kzalloc(sizeof(struct wrb_handle *) *
2900                                         phba->params.wrbs_per_cxn, GFP_KERNEL);
2901                 if (!pwrb_context->pwrb_handle_basestd) {
2902                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
2903                                     "BM_%d : Mem Alloc Failed. Failing to load\n");
2904                         goto init_wrb_hndl_failed;
2905                 }
2906                 if (!num_cxn_wrbh) {
2907                         pwrb_handle =
2908                                 mem_descr_wrbh->mem_array[idx].virtual_address;
2909                         num_cxn_wrbh = ((mem_descr_wrbh->mem_array[idx].size) /
2910                                         ((sizeof(struct wrb_handle)) *
2911                                          phba->params.wrbs_per_cxn));
2912                         idx++;
2913                 }
2914                 pwrb_context->alloc_index = 0;
2915                 pwrb_context->wrb_handles_available = 0;
2916                 pwrb_context->free_index = 0;
2917
2918                 if (num_cxn_wrbh) {
2919                         for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2920                                 pwrb_context->pwrb_handle_base[j] = pwrb_handle;
2921                                 pwrb_context->pwrb_handle_basestd[j] =
2922                                                                 pwrb_handle;
2923                                 pwrb_context->wrb_handles_available++;
2924                                 pwrb_handle->wrb_index = j;
2925                                 pwrb_handle++;
2926                         }
2927                         num_cxn_wrbh--;
2928                 }
2929                 spin_lock_init(&pwrb_context->wrb_lock);
2930         }
2931         idx = 0;
2932         for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
2933                 pwrb_context = &phwi_ctrlr->wrb_context[index];
2934                 if (!num_cxn_wrb) {
2935                         pwrb = mem_descr_wrb->mem_array[idx].virtual_address;
2936                         num_cxn_wrb = (mem_descr_wrb->mem_array[idx].size) /
2937                                 ((sizeof(struct iscsi_wrb) *
2938                                   phba->params.wrbs_per_cxn));
2939                         idx++;
2940                 }
2941
2942                 if (num_cxn_wrb) {
2943                         for (j = 0; j < phba->params.wrbs_per_cxn; j++) {
2944                                 pwrb_handle = pwrb_context->pwrb_handle_base[j];
2945                                 pwrb_handle->pwrb = pwrb;
2946                                 pwrb++;
2947                         }
2948                         num_cxn_wrb--;
2949                 }
2950         }
2951         return 0;
2952 init_wrb_hndl_failed:
2953         for (j = index; j > 0; j--) {
2954                 pwrb_context = &phwi_ctrlr->wrb_context[j];
2955                 kfree(pwrb_context->pwrb_handle_base);
2956                 kfree(pwrb_context->pwrb_handle_basestd);
2957         }
2958         return -ENOMEM;
2959 }
2960
2961 static int hwi_init_async_pdu_ctx(struct beiscsi_hba *phba)
2962 {
2963         uint8_t ulp_num;
2964         struct hwi_controller *phwi_ctrlr;
2965         struct hba_parameters *p = &phba->params;
2966         struct hwi_async_pdu_context *pasync_ctx;
2967         struct async_pdu_handle *pasync_header_h, *pasync_data_h;
2968         unsigned int index, idx, num_per_mem, num_async_data;
2969         struct be_mem_descriptor *mem_descr;
2970
2971         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
2972                 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
2973
2974                         mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2975                         mem_descr += (HWI_MEM_ASYNC_PDU_CONTEXT_ULP0 +
2976                                      (ulp_num * MEM_DESCR_OFFSET));
2977
2978                         phwi_ctrlr = phba->phwi_ctrlr;
2979                         phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num] =
2980                                 (struct hwi_async_pdu_context *)
2981                                  mem_descr->mem_array[0].virtual_address;
2982
2983                         pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num];
2984                         memset(pasync_ctx, 0, sizeof(*pasync_ctx));
2985
2986                         pasync_ctx->async_entry =
2987                                         (struct hwi_async_entry *)
2988                                         ((long unsigned int)pasync_ctx +
2989                                         sizeof(struct hwi_async_pdu_context));
2990
2991                         pasync_ctx->num_entries = BEISCSI_GET_CID_COUNT(phba,
2992                                                   ulp_num);
2993                         pasync_ctx->buffer_size = p->defpdu_hdr_sz;
2994
2995                         mem_descr = (struct be_mem_descriptor *)phba->init_mem;
2996                         mem_descr += HWI_MEM_ASYNC_HEADER_BUF_ULP0 +
2997                                 (ulp_num * MEM_DESCR_OFFSET);
2998                         if (mem_descr->mem_array[0].virtual_address) {
2999                                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3000                                             "BM_%d : hwi_init_async_pdu_ctx"
3001                                             " HWI_MEM_ASYNC_HEADER_BUF_ULP%d va=%p\n",
3002                                             ulp_num,
3003                                             mem_descr->mem_array[0].
3004                                             virtual_address);
3005                         } else
3006                                 beiscsi_log(phba, KERN_WARNING,
3007                                             BEISCSI_LOG_INIT,
3008                                             "BM_%d : No Virtual address for ULP : %d\n",
3009                                             ulp_num);
3010
3011                         pasync_ctx->async_header.va_base =
3012                                 mem_descr->mem_array[0].virtual_address;
3013
3014                         pasync_ctx->async_header.pa_base.u.a64.address =
3015                                 mem_descr->mem_array[0].
3016                                 bus_address.u.a64.address;
3017
3018                         mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3019                         mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +
3020                                      (ulp_num * MEM_DESCR_OFFSET);
3021                         if (mem_descr->mem_array[0].virtual_address) {
3022                                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3023                                             "BM_%d : hwi_init_async_pdu_ctx"
3024                                             " HWI_MEM_ASYNC_HEADER_RING_ULP%d va=%p\n",
3025                                             ulp_num,
3026                                             mem_descr->mem_array[0].
3027                                             virtual_address);
3028                         } else
3029                                 beiscsi_log(phba, KERN_WARNING,
3030                                             BEISCSI_LOG_INIT,
3031                                             "BM_%d : No Virtual address for ULP : %d\n",
3032                                             ulp_num);
3033
3034                         pasync_ctx->async_header.ring_base =
3035                                 mem_descr->mem_array[0].virtual_address;
3036
3037                         mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3038                         mem_descr += HWI_MEM_ASYNC_HEADER_HANDLE_ULP0 +
3039                                      (ulp_num * MEM_DESCR_OFFSET);
3040                         if (mem_descr->mem_array[0].virtual_address) {
3041                                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3042                                             "BM_%d : hwi_init_async_pdu_ctx"
3043                                             " HWI_MEM_ASYNC_HEADER_HANDLE_ULP%d va=%p\n",
3044                                             ulp_num,
3045                                             mem_descr->mem_array[0].
3046                                             virtual_address);
3047                         } else
3048                                 beiscsi_log(phba, KERN_WARNING,
3049                                             BEISCSI_LOG_INIT,
3050                                             "BM_%d : No Virtual address for ULP : %d\n",
3051                                             ulp_num);
3052
3053                         pasync_ctx->async_header.handle_base =
3054                                 mem_descr->mem_array[0].virtual_address;
3055                         pasync_ctx->async_header.writables = 0;
3056                         INIT_LIST_HEAD(&pasync_ctx->async_header.free_list);
3057
3058                         mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3059                         mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +
3060                                      (ulp_num * MEM_DESCR_OFFSET);
3061                         if (mem_descr->mem_array[0].virtual_address) {
3062                                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3063                                             "BM_%d : hwi_init_async_pdu_ctx"
3064                                             " HWI_MEM_ASYNC_DATA_RING_ULP%d va=%p\n",
3065                                             ulp_num,
3066                                             mem_descr->mem_array[0].
3067                                             virtual_address);
3068                         } else
3069                                 beiscsi_log(phba, KERN_WARNING,
3070                                             BEISCSI_LOG_INIT,
3071                                             "BM_%d : No Virtual address for ULP : %d\n",
3072                                             ulp_num);
3073
3074                         pasync_ctx->async_data.ring_base =
3075                                 mem_descr->mem_array[0].virtual_address;
3076
3077                         mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3078                         mem_descr += HWI_MEM_ASYNC_DATA_HANDLE_ULP0 +
3079                                      (ulp_num * MEM_DESCR_OFFSET);
3080                         if (!mem_descr->mem_array[0].virtual_address)
3081                                 beiscsi_log(phba, KERN_WARNING,
3082                                             BEISCSI_LOG_INIT,
3083                                             "BM_%d : No Virtual address for ULP : %d\n",
3084                                             ulp_num);
3085
3086                         pasync_ctx->async_data.handle_base =
3087                                 mem_descr->mem_array[0].virtual_address;
3088                         pasync_ctx->async_data.writables = 0;
3089                         INIT_LIST_HEAD(&pasync_ctx->async_data.free_list);
3090
3091                         pasync_header_h =
3092                                 (struct async_pdu_handle *)
3093                                 pasync_ctx->async_header.handle_base;
3094                         pasync_data_h =
3095                                 (struct async_pdu_handle *)
3096                                 pasync_ctx->async_data.handle_base;
3097
3098                         mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3099                         mem_descr += HWI_MEM_ASYNC_DATA_BUF_ULP0 +
3100                                      (ulp_num * MEM_DESCR_OFFSET);
3101                         if (mem_descr->mem_array[0].virtual_address) {
3102                                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3103                                             "BM_%d : hwi_init_async_pdu_ctx"
3104                                             " HWI_MEM_ASYNC_DATA_BUF_ULP%d va=%p\n",
3105                                             ulp_num,
3106                                             mem_descr->mem_array[0].
3107                                             virtual_address);
3108                         } else
3109                                 beiscsi_log(phba, KERN_WARNING,
3110                                             BEISCSI_LOG_INIT,
3111                                             "BM_%d : No Virtual address for ULP : %d\n",
3112                                             ulp_num);
3113
3114                         idx = 0;
3115                         pasync_ctx->async_data.va_base =
3116                                 mem_descr->mem_array[idx].virtual_address;
3117                         pasync_ctx->async_data.pa_base.u.a64.address =
3118                                 mem_descr->mem_array[idx].
3119                                 bus_address.u.a64.address;
3120
3121                         num_async_data = ((mem_descr->mem_array[idx].size) /
3122                                         phba->params.defpdu_data_sz);
3123                         num_per_mem = 0;
3124
3125                         for (index = 0; index < BEISCSI_GET_CID_COUNT
3126                                         (phba, ulp_num); index++) {
3127                                 pasync_header_h->cri = -1;
3128                                 pasync_header_h->index = (char)index;
3129                                 INIT_LIST_HEAD(&pasync_header_h->link);
3130                                 pasync_header_h->pbuffer =
3131                                         (void *)((unsigned long)
3132                                                  (pasync_ctx->
3133                                                   async_header.va_base) +
3134                                                  (p->defpdu_hdr_sz * index));
3135
3136                                 pasync_header_h->pa.u.a64.address =
3137                                         pasync_ctx->async_header.pa_base.u.a64.
3138                                         address + (p->defpdu_hdr_sz * index);
3139
3140                                 list_add_tail(&pasync_header_h->link,
3141                                               &pasync_ctx->async_header.
3142                                               free_list);
3143                                 pasync_header_h++;
3144                                 pasync_ctx->async_header.free_entries++;
3145                                 pasync_ctx->async_header.writables++;
3146
3147                                 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].
3148                                                wait_queue.list);
3149                                 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].
3150                                                header_busy_list);
3151                                 pasync_data_h->cri = -1;
3152                                 pasync_data_h->index = (char)index;
3153                                 INIT_LIST_HEAD(&pasync_data_h->link);
3154
3155                                 if (!num_async_data) {
3156                                         num_per_mem = 0;
3157                                         idx++;
3158                                         pasync_ctx->async_data.va_base =
3159                                                 mem_descr->mem_array[idx].
3160                                                 virtual_address;
3161                                         pasync_ctx->async_data.pa_base.u.
3162                                                 a64.address =
3163                                                 mem_descr->mem_array[idx].
3164                                                 bus_address.u.a64.address;
3165                                         num_async_data =
3166                                                 ((mem_descr->mem_array[idx].
3167                                                   size) /
3168                                                  phba->params.defpdu_data_sz);
3169                                 }
3170                                 pasync_data_h->pbuffer =
3171                                         (void *)((unsigned long)
3172                                         (pasync_ctx->async_data.va_base) +
3173                                         (p->defpdu_data_sz * num_per_mem));
3174
3175                                 pasync_data_h->pa.u.a64.address =
3176                                         pasync_ctx->async_data.pa_base.u.a64.
3177                                         address + (p->defpdu_data_sz *
3178                                         num_per_mem);
3179                                 num_per_mem++;
3180                                 num_async_data--;
3181
3182                                 list_add_tail(&pasync_data_h->link,
3183                                               &pasync_ctx->async_data.
3184                                               free_list);
3185                                 pasync_data_h++;
3186                                 pasync_ctx->async_data.free_entries++;
3187                                 pasync_ctx->async_data.writables++;
3188
3189                                 INIT_LIST_HEAD(&pasync_ctx->async_entry[index].
3190                                                data_busy_list);
3191                         }
3192
3193                         pasync_ctx->async_header.host_write_ptr = 0;
3194                         pasync_ctx->async_header.ep_read_ptr = -1;
3195                         pasync_ctx->async_data.host_write_ptr = 0;
3196                         pasync_ctx->async_data.ep_read_ptr = -1;
3197                 }
3198         }
3199
3200         return 0;
3201 }
3202
3203 static int
3204 be_sgl_create_contiguous(void *virtual_address,
3205                          u64 physical_address, u32 length,
3206                          struct be_dma_mem *sgl)
3207 {
3208         WARN_ON(!virtual_address);
3209         WARN_ON(!physical_address);
3210         WARN_ON(!length);
3211         WARN_ON(!sgl);
3212
3213         sgl->va = virtual_address;
3214         sgl->dma = (unsigned long)physical_address;
3215         sgl->size = length;
3216
3217         return 0;
3218 }
3219
3220 static void be_sgl_destroy_contiguous(struct be_dma_mem *sgl)
3221 {
3222         memset(sgl, 0, sizeof(*sgl));
3223 }
3224
3225 static void
3226 hwi_build_be_sgl_arr(struct beiscsi_hba *phba,
3227                      struct mem_array *pmem, struct be_dma_mem *sgl)
3228 {
3229         if (sgl->va)
3230                 be_sgl_destroy_contiguous(sgl);
3231
3232         be_sgl_create_contiguous(pmem->virtual_address,
3233                                  pmem->bus_address.u.a64.address,
3234                                  pmem->size, sgl);
3235 }
3236
3237 static void
3238 hwi_build_be_sgl_by_offset(struct beiscsi_hba *phba,
3239                            struct mem_array *pmem, struct be_dma_mem *sgl)
3240 {
3241         if (sgl->va)
3242                 be_sgl_destroy_contiguous(sgl);
3243
3244         be_sgl_create_contiguous((unsigned char *)pmem->virtual_address,
3245                                  pmem->bus_address.u.a64.address,
3246                                  pmem->size, sgl);
3247 }
3248
3249 static int be_fill_queue(struct be_queue_info *q,
3250                 u16 len, u16 entry_size, void *vaddress)
3251 {
3252         struct be_dma_mem *mem = &q->dma_mem;
3253
3254         memset(q, 0, sizeof(*q));
3255         q->len = len;
3256         q->entry_size = entry_size;
3257         mem->size = len * entry_size;
3258         mem->va = vaddress;
3259         if (!mem->va)
3260                 return -ENOMEM;
3261         memset(mem->va, 0, mem->size);
3262         return 0;
3263 }
3264
3265 static int beiscsi_create_eqs(struct beiscsi_hba *phba,
3266                              struct hwi_context_memory *phwi_context)
3267 {
3268         unsigned int i, num_eq_pages;
3269         int ret = 0, eq_for_mcc;
3270         struct be_queue_info *eq;
3271         struct be_dma_mem *mem;
3272         void *eq_vaddress;
3273         dma_addr_t paddr;
3274
3275         num_eq_pages = PAGES_REQUIRED(phba->params.num_eq_entries * \
3276                                       sizeof(struct be_eq_entry));
3277
3278         if (phba->msix_enabled)
3279                 eq_for_mcc = 1;
3280         else
3281                 eq_for_mcc = 0;
3282         for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3283                 eq = &phwi_context->be_eq[i].q;
3284                 mem = &eq->dma_mem;
3285                 phwi_context->be_eq[i].phba = phba;
3286                 eq_vaddress = pci_alloc_consistent(phba->pcidev,
3287                                                      num_eq_pages * PAGE_SIZE,
3288                                                      &paddr);
3289                 if (!eq_vaddress)
3290                         goto create_eq_error;
3291
3292                 mem->va = eq_vaddress;
3293                 ret = be_fill_queue(eq, phba->params.num_eq_entries,
3294                                     sizeof(struct be_eq_entry), eq_vaddress);
3295                 if (ret) {
3296                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3297                                     "BM_%d : be_fill_queue Failed for EQ\n");
3298                         goto create_eq_error;
3299                 }
3300
3301                 mem->dma = paddr;
3302                 ret = beiscsi_cmd_eq_create(&phba->ctrl, eq,
3303                                             phwi_context->cur_eqd);
3304                 if (ret) {
3305                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3306                                     "BM_%d : beiscsi_cmd_eq_create"
3307                                     "Failed for EQ\n");
3308                         goto create_eq_error;
3309                 }
3310
3311                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3312                             "BM_%d : eqid = %d\n",
3313                             phwi_context->be_eq[i].q.id);
3314         }
3315         return 0;
3316 create_eq_error:
3317         for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3318                 eq = &phwi_context->be_eq[i].q;
3319                 mem = &eq->dma_mem;
3320                 if (mem->va)
3321                         pci_free_consistent(phba->pcidev, num_eq_pages
3322                                             * PAGE_SIZE,
3323                                             mem->va, mem->dma);
3324         }
3325         return ret;
3326 }
3327
3328 static int beiscsi_create_cqs(struct beiscsi_hba *phba,
3329                              struct hwi_context_memory *phwi_context)
3330 {
3331         unsigned int i, num_cq_pages;
3332         int ret = 0;
3333         struct be_queue_info *cq, *eq;
3334         struct be_dma_mem *mem;
3335         struct be_eq_obj *pbe_eq;
3336         void *cq_vaddress;
3337         dma_addr_t paddr;
3338
3339         num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \
3340                                       sizeof(struct sol_cqe));
3341
3342         for (i = 0; i < phba->num_cpus; i++) {
3343                 cq = &phwi_context->be_cq[i];
3344                 eq = &phwi_context->be_eq[i].q;
3345                 pbe_eq = &phwi_context->be_eq[i];
3346                 pbe_eq->cq = cq;
3347                 pbe_eq->phba = phba;
3348                 mem = &cq->dma_mem;
3349                 cq_vaddress = pci_alloc_consistent(phba->pcidev,
3350                                                      num_cq_pages * PAGE_SIZE,
3351                                                      &paddr);
3352                 if (!cq_vaddress)
3353                         goto create_cq_error;
3354                 ret = be_fill_queue(cq, phba->params.num_cq_entries,
3355                                     sizeof(struct sol_cqe), cq_vaddress);
3356                 if (ret) {
3357                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3358                                     "BM_%d : be_fill_queue Failed "
3359                                     "for ISCSI CQ\n");
3360                         goto create_cq_error;
3361                 }
3362
3363                 mem->dma = paddr;
3364                 ret = beiscsi_cmd_cq_create(&phba->ctrl, cq, eq, false,
3365                                             false, 0);
3366                 if (ret) {
3367                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3368                                     "BM_%d : beiscsi_cmd_eq_create"
3369                                     "Failed for ISCSI CQ\n");
3370                         goto create_cq_error;
3371                 }
3372                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3373                             "BM_%d : iscsi cq_id is %d for eq_id %d\n"
3374                             "iSCSI CQ CREATED\n", cq->id, eq->id);
3375         }
3376         return 0;
3377
3378 create_cq_error:
3379         for (i = 0; i < phba->num_cpus; i++) {
3380                 cq = &phwi_context->be_cq[i];
3381                 mem = &cq->dma_mem;
3382                 if (mem->va)
3383                         pci_free_consistent(phba->pcidev, num_cq_pages
3384                                             * PAGE_SIZE,
3385                                             mem->va, mem->dma);
3386         }
3387         return ret;
3388
3389 }
3390
3391 static int
3392 beiscsi_create_def_hdr(struct beiscsi_hba *phba,
3393                        struct hwi_context_memory *phwi_context,
3394                        struct hwi_controller *phwi_ctrlr,
3395                        unsigned int def_pdu_ring_sz, uint8_t ulp_num)
3396 {
3397         unsigned int idx;
3398         int ret;
3399         struct be_queue_info *dq, *cq;
3400         struct be_dma_mem *mem;
3401         struct be_mem_descriptor *mem_descr;
3402         void *dq_vaddress;
3403
3404         idx = 0;
3405         dq = &phwi_context->be_def_hdrq[ulp_num];
3406         cq = &phwi_context->be_cq[0];
3407         mem = &dq->dma_mem;
3408         mem_descr = phba->init_mem;
3409         mem_descr += HWI_MEM_ASYNC_HEADER_RING_ULP0 +
3410                     (ulp_num * MEM_DESCR_OFFSET);
3411         dq_vaddress = mem_descr->mem_array[idx].virtual_address;
3412         ret = be_fill_queue(dq, mem_descr->mem_array[0].size /
3413                             sizeof(struct phys_addr),
3414                             sizeof(struct phys_addr), dq_vaddress);
3415         if (ret) {
3416                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3417                             "BM_%d : be_fill_queue Failed for DEF PDU HDR on ULP : %d\n",
3418                             ulp_num);
3419
3420                 return ret;
3421         }
3422         mem->dma = (unsigned long)mem_descr->mem_array[idx].
3423                                   bus_address.u.a64.address;
3424         ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dq,
3425                                               def_pdu_ring_sz,
3426                                               phba->params.defpdu_hdr_sz,
3427                                               BEISCSI_DEFQ_HDR, ulp_num);
3428         if (ret) {
3429                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3430                             "BM_%d : be_cmd_create_default_pdu_queue Failed DEFHDR on ULP : %d\n",
3431                             ulp_num);
3432
3433                 return ret;
3434         }
3435
3436         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3437                     "BM_%d : iscsi hdr def pdu id for ULP : %d is %d\n",
3438                     ulp_num,
3439                     phwi_context->be_def_hdrq[ulp_num].id);
3440         hwi_post_async_buffers(phba, BEISCSI_DEFQ_HDR, ulp_num);
3441         return 0;
3442 }
3443
3444 static int
3445 beiscsi_create_def_data(struct beiscsi_hba *phba,
3446                         struct hwi_context_memory *phwi_context,
3447                         struct hwi_controller *phwi_ctrlr,
3448                         unsigned int def_pdu_ring_sz, uint8_t ulp_num)
3449 {
3450         unsigned int idx;
3451         int ret;
3452         struct be_queue_info *dataq, *cq;
3453         struct be_dma_mem *mem;
3454         struct be_mem_descriptor *mem_descr;
3455         void *dq_vaddress;
3456
3457         idx = 0;
3458         dataq = &phwi_context->be_def_dataq[ulp_num];
3459         cq = &phwi_context->be_cq[0];
3460         mem = &dataq->dma_mem;
3461         mem_descr = phba->init_mem;
3462         mem_descr += HWI_MEM_ASYNC_DATA_RING_ULP0 +
3463                     (ulp_num * MEM_DESCR_OFFSET);
3464         dq_vaddress = mem_descr->mem_array[idx].virtual_address;
3465         ret = be_fill_queue(dataq, mem_descr->mem_array[0].size /
3466                             sizeof(struct phys_addr),
3467                             sizeof(struct phys_addr), dq_vaddress);
3468         if (ret) {
3469                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3470                             "BM_%d : be_fill_queue Failed for DEF PDU "
3471                             "DATA on ULP : %d\n",
3472                             ulp_num);
3473
3474                 return ret;
3475         }
3476         mem->dma = (unsigned long)mem_descr->mem_array[idx].
3477                                   bus_address.u.a64.address;
3478         ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dataq,
3479                                               def_pdu_ring_sz,
3480                                               phba->params.defpdu_data_sz,
3481                                               BEISCSI_DEFQ_DATA, ulp_num);
3482         if (ret) {
3483                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3484                             "BM_%d be_cmd_create_default_pdu_queue"
3485                             " Failed for DEF PDU DATA on ULP : %d\n",
3486                             ulp_num);
3487                 return ret;
3488         }
3489
3490         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3491                     "BM_%d : iscsi def data id on ULP : %d is  %d\n",
3492                     ulp_num,
3493                     phwi_context->be_def_dataq[ulp_num].id);
3494
3495         hwi_post_async_buffers(phba, BEISCSI_DEFQ_DATA, ulp_num);
3496         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3497                     "BM_%d : DEFAULT PDU DATA RING CREATED"
3498                     "on ULP : %d\n", ulp_num);
3499
3500         return 0;
3501 }
3502
3503
3504 static int
3505 beiscsi_post_template_hdr(struct beiscsi_hba *phba)
3506 {
3507         struct be_mem_descriptor *mem_descr;
3508         struct mem_array *pm_arr;
3509         struct be_dma_mem sgl;
3510         int status, ulp_num;
3511
3512         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3513                 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3514                         mem_descr = (struct be_mem_descriptor *)phba->init_mem;
3515                         mem_descr += HWI_MEM_TEMPLATE_HDR_ULP0 +
3516                                     (ulp_num * MEM_DESCR_OFFSET);
3517                         pm_arr = mem_descr->mem_array;
3518
3519                         hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
3520                         status = be_cmd_iscsi_post_template_hdr(
3521                                  &phba->ctrl, &sgl);
3522
3523                         if (status != 0) {
3524                                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3525                                             "BM_%d : Post Template HDR Failed for"
3526                                             "ULP_%d\n", ulp_num);
3527                                 return status;
3528                         }
3529
3530                         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3531                                     "BM_%d : Template HDR Pages Posted for"
3532                                     "ULP_%d\n", ulp_num);
3533                 }
3534         }
3535         return 0;
3536 }
3537
3538 static int
3539 beiscsi_post_pages(struct beiscsi_hba *phba)
3540 {
3541         struct be_mem_descriptor *mem_descr;
3542         struct mem_array *pm_arr;
3543         unsigned int page_offset, i;
3544         struct be_dma_mem sgl;
3545         int status, ulp_num = 0;
3546
3547         mem_descr = phba->init_mem;
3548         mem_descr += HWI_MEM_SGE;
3549         pm_arr = mem_descr->mem_array;
3550
3551         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3552                 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
3553                         break;
3554
3555         page_offset = (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io *
3556                         phba->fw_config.iscsi_icd_start[ulp_num]) / PAGE_SIZE;
3557         for (i = 0; i < mem_descr->num_elements; i++) {
3558                 hwi_build_be_sgl_arr(phba, pm_arr, &sgl);
3559                 status = be_cmd_iscsi_post_sgl_pages(&phba->ctrl, &sgl,
3560                                                 page_offset,
3561                                                 (pm_arr->size / PAGE_SIZE));
3562                 page_offset += pm_arr->size / PAGE_SIZE;
3563                 if (status != 0) {
3564                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3565                                     "BM_%d : post sgl failed.\n");
3566                         return status;
3567                 }
3568                 pm_arr++;
3569         }
3570         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3571                     "BM_%d : POSTED PAGES\n");
3572         return 0;
3573 }
3574
3575 static void be_queue_free(struct beiscsi_hba *phba, struct be_queue_info *q)
3576 {
3577         struct be_dma_mem *mem = &q->dma_mem;
3578         if (mem->va) {
3579                 pci_free_consistent(phba->pcidev, mem->size,
3580                         mem->va, mem->dma);
3581                 mem->va = NULL;
3582         }
3583 }
3584
3585 static int be_queue_alloc(struct beiscsi_hba *phba, struct be_queue_info *q,
3586                 u16 len, u16 entry_size)
3587 {
3588         struct be_dma_mem *mem = &q->dma_mem;
3589
3590         memset(q, 0, sizeof(*q));
3591         q->len = len;
3592         q->entry_size = entry_size;
3593         mem->size = len * entry_size;
3594         mem->va = pci_zalloc_consistent(phba->pcidev, mem->size, &mem->dma);
3595         if (!mem->va)
3596                 return -ENOMEM;
3597         return 0;
3598 }
3599
3600 static int
3601 beiscsi_create_wrb_rings(struct beiscsi_hba *phba,
3602                          struct hwi_context_memory *phwi_context,
3603                          struct hwi_controller *phwi_ctrlr)
3604 {
3605         unsigned int wrb_mem_index, offset, size, num_wrb_rings;
3606         u64 pa_addr_lo;
3607         unsigned int idx, num, i, ulp_num;
3608         struct mem_array *pwrb_arr;
3609         void *wrb_vaddr;
3610         struct be_dma_mem sgl;
3611         struct be_mem_descriptor *mem_descr;
3612         struct hwi_wrb_context *pwrb_context;
3613         int status;
3614         uint8_t ulp_count = 0, ulp_base_num = 0;
3615         uint16_t cid_count_ulp[BEISCSI_ULP_COUNT] = { 0 };
3616
3617         idx = 0;
3618         mem_descr = phba->init_mem;
3619         mem_descr += HWI_MEM_WRB;
3620         pwrb_arr = kmalloc(sizeof(*pwrb_arr) * phba->params.cxns_per_ctrl,
3621                            GFP_KERNEL);
3622         if (!pwrb_arr) {
3623                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3624                             "BM_%d : Memory alloc failed in create wrb ring.\n");
3625                 return -ENOMEM;
3626         }
3627         wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
3628         pa_addr_lo = mem_descr->mem_array[idx].bus_address.u.a64.address;
3629         num_wrb_rings = mem_descr->mem_array[idx].size /
3630                 (phba->params.wrbs_per_cxn * sizeof(struct iscsi_wrb));
3631
3632         for (num = 0; num < phba->params.cxns_per_ctrl; num++) {
3633                 if (num_wrb_rings) {
3634                         pwrb_arr[num].virtual_address = wrb_vaddr;
3635                         pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo;
3636                         pwrb_arr[num].size = phba->params.wrbs_per_cxn *
3637                                             sizeof(struct iscsi_wrb);
3638                         wrb_vaddr += pwrb_arr[num].size;
3639                         pa_addr_lo += pwrb_arr[num].size;
3640                         num_wrb_rings--;
3641                 } else {
3642                         idx++;
3643                         wrb_vaddr = mem_descr->mem_array[idx].virtual_address;
3644                         pa_addr_lo = mem_descr->mem_array[idx].\
3645                                         bus_address.u.a64.address;
3646                         num_wrb_rings = mem_descr->mem_array[idx].size /
3647                                         (phba->params.wrbs_per_cxn *
3648                                         sizeof(struct iscsi_wrb));
3649                         pwrb_arr[num].virtual_address = wrb_vaddr;
3650                         pwrb_arr[num].bus_address.u.a64.address\
3651                                                 = pa_addr_lo;
3652                         pwrb_arr[num].size = phba->params.wrbs_per_cxn *
3653                                                  sizeof(struct iscsi_wrb);
3654                         wrb_vaddr += pwrb_arr[num].size;
3655                         pa_addr_lo   += pwrb_arr[num].size;
3656                         num_wrb_rings--;
3657                 }
3658         }
3659
3660         /* Get the ULP Count */
3661         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
3662                 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3663                         ulp_count++;
3664                         ulp_base_num = ulp_num;
3665                         cid_count_ulp[ulp_num] =
3666                                 BEISCSI_GET_CID_COUNT(phba, ulp_num);
3667                 }
3668
3669         for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3670                 wrb_mem_index = 0;
3671                 offset = 0;
3672                 size = 0;
3673
3674                 if (ulp_count > 1) {
3675                         ulp_base_num = (ulp_base_num + 1) % BEISCSI_ULP_COUNT;
3676
3677                         if (!cid_count_ulp[ulp_base_num])
3678                                 ulp_base_num = (ulp_base_num + 1) %
3679                                                 BEISCSI_ULP_COUNT;
3680
3681                         cid_count_ulp[ulp_base_num]--;
3682                 }
3683
3684
3685                 hwi_build_be_sgl_by_offset(phba, &pwrb_arr[i], &sgl);
3686                 status = be_cmd_wrbq_create(&phba->ctrl, &sgl,
3687                                             &phwi_context->be_wrbq[i],
3688                                             &phwi_ctrlr->wrb_context[i],
3689                                             ulp_base_num);
3690                 if (status != 0) {
3691                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3692                                     "BM_%d : wrbq create failed.");
3693                         kfree(pwrb_arr);
3694                         return status;
3695                 }
3696                 pwrb_context = &phwi_ctrlr->wrb_context[i];
3697                 BE_SET_CID_TO_CRI(i, pwrb_context->cid);
3698         }
3699         kfree(pwrb_arr);
3700         return 0;
3701 }
3702
3703 static void free_wrb_handles(struct beiscsi_hba *phba)
3704 {
3705         unsigned int index;
3706         struct hwi_controller *phwi_ctrlr;
3707         struct hwi_wrb_context *pwrb_context;
3708
3709         phwi_ctrlr = phba->phwi_ctrlr;
3710         for (index = 0; index < phba->params.cxns_per_ctrl; index++) {
3711                 pwrb_context = &phwi_ctrlr->wrb_context[index];
3712                 kfree(pwrb_context->pwrb_handle_base);
3713                 kfree(pwrb_context->pwrb_handle_basestd);
3714         }
3715 }
3716
3717 static void be_mcc_queues_destroy(struct beiscsi_hba *phba)
3718 {
3719         struct be_queue_info *q;
3720         struct be_ctrl_info *ctrl = &phba->ctrl;
3721
3722         q = &phba->ctrl.mcc_obj.q;
3723         if (q->created) {
3724                 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_MCCQ);
3725                 be_queue_free(phba, q);
3726         }
3727
3728         q = &phba->ctrl.mcc_obj.cq;
3729         if (q->created) {
3730                 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3731                 be_queue_free(phba, q);
3732         }
3733 }
3734
3735 static void hwi_cleanup(struct beiscsi_hba *phba)
3736 {
3737         struct be_queue_info *q;
3738         struct be_ctrl_info *ctrl = &phba->ctrl;
3739         struct hwi_controller *phwi_ctrlr;
3740         struct hwi_context_memory *phwi_context;
3741         struct hwi_async_pdu_context *pasync_ctx;
3742         int i, eq_for_mcc, ulp_num;
3743
3744         phwi_ctrlr = phba->phwi_ctrlr;
3745         phwi_context = phwi_ctrlr->phwi_ctxt;
3746
3747         be_cmd_iscsi_remove_template_hdr(ctrl);
3748
3749         for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
3750                 q = &phwi_context->be_wrbq[i];
3751                 if (q->created)
3752                         beiscsi_cmd_q_destroy(ctrl, q, QTYPE_WRBQ);
3753         }
3754         kfree(phwi_context->be_wrbq);
3755         free_wrb_handles(phba);
3756
3757         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3758                 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3759
3760                         q = &phwi_context->be_def_hdrq[ulp_num];
3761                         if (q->created)
3762                                 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3763
3764                         q = &phwi_context->be_def_dataq[ulp_num];
3765                         if (q->created)
3766                                 beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ);
3767
3768                         pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx[ulp_num];
3769                 }
3770         }
3771
3772         beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);
3773
3774         for (i = 0; i < (phba->num_cpus); i++) {
3775                 q = &phwi_context->be_cq[i];
3776                 if (q->created) {
3777                         be_queue_free(phba, q);
3778                         beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ);
3779                 }
3780         }
3781
3782         be_mcc_queues_destroy(phba);
3783         if (phba->msix_enabled)
3784                 eq_for_mcc = 1;
3785         else
3786                 eq_for_mcc = 0;
3787         for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) {
3788                 q = &phwi_context->be_eq[i].q;
3789                 if (q->created) {
3790                         be_queue_free(phba, q);
3791                         beiscsi_cmd_q_destroy(ctrl, q, QTYPE_EQ);
3792                 }
3793         }
3794         be_cmd_fw_uninit(ctrl);
3795 }
3796
3797 static int be_mcc_queues_create(struct beiscsi_hba *phba,
3798                                 struct hwi_context_memory *phwi_context)
3799 {
3800         struct be_queue_info *q, *cq;
3801         struct be_ctrl_info *ctrl = &phba->ctrl;
3802
3803         /* Alloc MCC compl queue */
3804         cq = &phba->ctrl.mcc_obj.cq;
3805         if (be_queue_alloc(phba, cq, MCC_CQ_LEN,
3806                         sizeof(struct be_mcc_compl)))
3807                 goto err;
3808         /* Ask BE to create MCC compl queue; */
3809         if (phba->msix_enabled) {
3810                 if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq
3811                                          [phba->num_cpus].q, false, true, 0))
3812                 goto mcc_cq_free;
3813         } else {
3814                 if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq[0].q,
3815                                           false, true, 0))
3816                 goto mcc_cq_free;
3817         }
3818
3819         /* Alloc MCC queue */
3820         q = &phba->ctrl.mcc_obj.q;
3821         if (be_queue_alloc(phba, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
3822                 goto mcc_cq_destroy;
3823
3824         /* Ask BE to create MCC queue */
3825         if (beiscsi_cmd_mccq_create(phba, q, cq))
3826                 goto mcc_q_free;
3827
3828         return 0;
3829
3830 mcc_q_free:
3831         be_queue_free(phba, q);
3832 mcc_cq_destroy:
3833         beiscsi_cmd_q_destroy(ctrl, cq, QTYPE_CQ);
3834 mcc_cq_free:
3835         be_queue_free(phba, cq);
3836 err:
3837         return -ENOMEM;
3838 }
3839
3840 /**
3841  * find_num_cpus()- Get the CPU online count
3842  * @phba: ptr to priv structure
3843  *
3844  * CPU count is used for creating EQ.
3845  **/
3846 static void find_num_cpus(struct beiscsi_hba *phba)
3847 {
3848         int  num_cpus = 0;
3849
3850         num_cpus = num_online_cpus();
3851
3852         switch (phba->generation) {
3853         case BE_GEN2:
3854         case BE_GEN3:
3855                 phba->num_cpus = (num_cpus > BEISCSI_MAX_NUM_CPUS) ?
3856                                   BEISCSI_MAX_NUM_CPUS : num_cpus;
3857                 break;
3858         case BE_GEN4:
3859                 /*
3860                  * If eqid_count == 1 fall back to
3861                  * INTX mechanism
3862                  **/
3863                 if (phba->fw_config.eqid_count == 1) {
3864                         enable_msix = 0;
3865                         phba->num_cpus = 1;
3866                         return;
3867                 }
3868
3869                 phba->num_cpus =
3870                         (num_cpus > (phba->fw_config.eqid_count - 1)) ?
3871                         (phba->fw_config.eqid_count - 1) : num_cpus;
3872                 break;
3873         default:
3874                 phba->num_cpus = 1;
3875         }
3876 }
3877
3878 static int hwi_init_port(struct beiscsi_hba *phba)
3879 {
3880         struct hwi_controller *phwi_ctrlr;
3881         struct hwi_context_memory *phwi_context;
3882         unsigned int def_pdu_ring_sz;
3883         struct be_ctrl_info *ctrl = &phba->ctrl;
3884         int status, ulp_num;
3885
3886         phwi_ctrlr = phba->phwi_ctrlr;
3887         phwi_context = phwi_ctrlr->phwi_ctxt;
3888         phwi_context->max_eqd = 128;
3889         phwi_context->min_eqd = 0;
3890         phwi_context->cur_eqd = 0;
3891         be_cmd_fw_initialize(&phba->ctrl);
3892         /* set optic state to unknown */
3893         phba->optic_state = 0xff;
3894
3895         status = beiscsi_create_eqs(phba, phwi_context);
3896         if (status != 0) {
3897                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3898                             "BM_%d : EQ not created\n");
3899                 goto error;
3900         }
3901
3902         status = be_mcc_queues_create(phba, phwi_context);
3903         if (status != 0)
3904                 goto error;
3905
3906         status = mgmt_check_supported_fw(ctrl, phba);
3907         if (status != 0) {
3908                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3909                             "BM_%d : Unsupported fw version\n");
3910                 goto error;
3911         }
3912
3913         status = beiscsi_create_cqs(phba, phwi_context);
3914         if (status != 0) {
3915                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3916                             "BM_%d : CQ not created\n");
3917                 goto error;
3918         }
3919
3920         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3921                 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3922
3923                         def_pdu_ring_sz =
3924                                 BEISCSI_GET_CID_COUNT(phba, ulp_num) *
3925                                 sizeof(struct phys_addr);
3926
3927                         status = beiscsi_create_def_hdr(phba, phwi_context,
3928                                                         phwi_ctrlr,
3929                                                         def_pdu_ring_sz,
3930                                                         ulp_num);
3931                         if (status != 0) {
3932                                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3933                                             "BM_%d : Default Header not created for ULP : %d\n",
3934                                             ulp_num);
3935                                 goto error;
3936                         }
3937
3938                         status = beiscsi_create_def_data(phba, phwi_context,
3939                                                          phwi_ctrlr,
3940                                                          def_pdu_ring_sz,
3941                                                          ulp_num);
3942                         if (status != 0) {
3943                                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3944                                             "BM_%d : Default Data not created for ULP : %d\n",
3945                                             ulp_num);
3946                                 goto error;
3947                         }
3948                 }
3949         }
3950
3951         status = beiscsi_post_pages(phba);
3952         if (status != 0) {
3953                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3954                             "BM_%d : Post SGL Pages Failed\n");
3955                 goto error;
3956         }
3957
3958         status = beiscsi_post_template_hdr(phba);
3959         if (status != 0) {
3960                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3961                             "BM_%d : Template HDR Posting for CXN Failed\n");
3962         }
3963
3964         status = beiscsi_create_wrb_rings(phba, phwi_context, phwi_ctrlr);
3965         if (status != 0) {
3966                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3967                             "BM_%d : WRB Rings not created\n");
3968                 goto error;
3969         }
3970
3971         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
3972                 uint16_t async_arr_idx = 0;
3973
3974                 if (test_bit(ulp_num, &phba->fw_config.ulp_supported)) {
3975                         uint16_t cri = 0;
3976                         struct hwi_async_pdu_context *pasync_ctx;
3977
3978                         pasync_ctx = HWI_GET_ASYNC_PDU_CTX(
3979                                      phwi_ctrlr, ulp_num);
3980                         for (cri = 0; cri <
3981                              phba->params.cxns_per_ctrl; cri++) {
3982                                 if (ulp_num == BEISCSI_GET_ULP_FROM_CRI
3983                                                (phwi_ctrlr, cri))
3984                                         pasync_ctx->cid_to_async_cri_map[
3985                                         phwi_ctrlr->wrb_context[cri].cid] =
3986                                         async_arr_idx++;
3987                         }
3988                 }
3989         }
3990
3991         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
3992                     "BM_%d : hwi_init_port success\n");
3993         return 0;
3994
3995 error:
3996         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
3997                     "BM_%d : hwi_init_port failed");
3998         hwi_cleanup(phba);
3999         return status;
4000 }
4001
4002 static int hwi_init_controller(struct beiscsi_hba *phba)
4003 {
4004         struct hwi_controller *phwi_ctrlr;
4005
4006         phwi_ctrlr = phba->phwi_ctrlr;
4007         if (1 == phba->init_mem[HWI_MEM_ADDN_CONTEXT].num_elements) {
4008                 phwi_ctrlr->phwi_ctxt = (struct hwi_context_memory *)phba->
4009                     init_mem[HWI_MEM_ADDN_CONTEXT].mem_array[0].virtual_address;
4010                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4011                             "BM_%d :  phwi_ctrlr->phwi_ctxt=%p\n",
4012                             phwi_ctrlr->phwi_ctxt);
4013         } else {
4014                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4015                             "BM_%d : HWI_MEM_ADDN_CONTEXT is more "
4016                             "than one element.Failing to load\n");
4017                 return -ENOMEM;
4018         }
4019
4020         iscsi_init_global_templates(phba);
4021         if (beiscsi_init_wrb_handle(phba))
4022                 return -ENOMEM;
4023
4024         if (hwi_init_async_pdu_ctx(phba)) {
4025                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4026                             "BM_%d : hwi_init_async_pdu_ctx failed\n");
4027                 return -ENOMEM;
4028         }
4029
4030         if (hwi_init_port(phba) != 0) {
4031                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4032                             "BM_%d : hwi_init_controller failed\n");
4033
4034                 return -ENOMEM;
4035         }
4036         return 0;
4037 }
4038
4039 static void beiscsi_free_mem(struct beiscsi_hba *phba)
4040 {
4041         struct be_mem_descriptor *mem_descr;
4042         int i, j;
4043
4044         mem_descr = phba->init_mem;
4045         i = 0;
4046         j = 0;
4047         for (i = 0; i < SE_MEM_MAX; i++) {
4048                 for (j = mem_descr->num_elements; j > 0; j--) {
4049                         pci_free_consistent(phba->pcidev,
4050                           mem_descr->mem_array[j - 1].size,
4051                           mem_descr->mem_array[j - 1].virtual_address,
4052                           (unsigned long)mem_descr->mem_array[j - 1].
4053                           bus_address.u.a64.address);
4054                 }
4055
4056                 kfree(mem_descr->mem_array);
4057                 mem_descr++;
4058         }
4059         kfree(phba->init_mem);
4060         kfree(phba->phwi_ctrlr->wrb_context);
4061         kfree(phba->phwi_ctrlr);
4062 }
4063
4064 static int beiscsi_init_controller(struct beiscsi_hba *phba)
4065 {
4066         int ret = -ENOMEM;
4067
4068         ret = beiscsi_get_memory(phba);
4069         if (ret < 0) {
4070                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4071                             "BM_%d : beiscsi_dev_probe -"
4072                             "Failed in beiscsi_alloc_memory\n");
4073                 return ret;
4074         }
4075
4076         ret = hwi_init_controller(phba);
4077         if (ret)
4078                 goto free_init;
4079         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4080                     "BM_%d : Return success from beiscsi_init_controller");
4081
4082         return 0;
4083
4084 free_init:
4085         beiscsi_free_mem(phba);
4086         return ret;
4087 }
4088
4089 static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba)
4090 {
4091         struct be_mem_descriptor *mem_descr_sglh, *mem_descr_sg;
4092         struct sgl_handle *psgl_handle;
4093         struct iscsi_sge *pfrag;
4094         unsigned int arr_index, i, idx;
4095         unsigned int ulp_icd_start, ulp_num = 0;
4096
4097         phba->io_sgl_hndl_avbl = 0;
4098         phba->eh_sgl_hndl_avbl = 0;
4099
4100         mem_descr_sglh = phba->init_mem;
4101         mem_descr_sglh += HWI_MEM_SGLH;
4102         if (1 == mem_descr_sglh->num_elements) {
4103                 phba->io_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) *
4104                                                  phba->params.ios_per_ctrl,
4105                                                  GFP_KERNEL);
4106                 if (!phba->io_sgl_hndl_base) {
4107                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4108                                     "BM_%d : Mem Alloc Failed. Failing to load\n");
4109                         return -ENOMEM;
4110                 }
4111                 phba->eh_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) *
4112                                                  (phba->params.icds_per_ctrl -
4113                                                  phba->params.ios_per_ctrl),
4114                                                  GFP_KERNEL);
4115                 if (!phba->eh_sgl_hndl_base) {
4116                         kfree(phba->io_sgl_hndl_base);
4117                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4118                                     "BM_%d : Mem Alloc Failed. Failing to load\n");
4119                         return -ENOMEM;
4120                 }
4121         } else {
4122                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4123                             "BM_%d : HWI_MEM_SGLH is more than one element."
4124                             "Failing to load\n");
4125                 return -ENOMEM;
4126         }
4127
4128         arr_index = 0;
4129         idx = 0;
4130         while (idx < mem_descr_sglh->num_elements) {
4131                 psgl_handle = mem_descr_sglh->mem_array[idx].virtual_address;
4132
4133                 for (i = 0; i < (mem_descr_sglh->mem_array[idx].size /
4134                       sizeof(struct sgl_handle)); i++) {
4135                         if (arr_index < phba->params.ios_per_ctrl) {
4136                                 phba->io_sgl_hndl_base[arr_index] = psgl_handle;
4137                                 phba->io_sgl_hndl_avbl++;
4138                                 arr_index++;
4139                         } else {
4140                                 phba->eh_sgl_hndl_base[arr_index -
4141                                         phba->params.ios_per_ctrl] =
4142                                                                 psgl_handle;
4143                                 arr_index++;
4144                                 phba->eh_sgl_hndl_avbl++;
4145                         }
4146                         psgl_handle++;
4147                 }
4148                 idx++;
4149         }
4150         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4151                     "BM_%d : phba->io_sgl_hndl_avbl=%d"
4152                     "phba->eh_sgl_hndl_avbl=%d\n",
4153                     phba->io_sgl_hndl_avbl,
4154                     phba->eh_sgl_hndl_avbl);
4155
4156         mem_descr_sg = phba->init_mem;
4157         mem_descr_sg += HWI_MEM_SGE;
4158         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4159                     "\n BM_%d : mem_descr_sg->num_elements=%d\n",
4160                     mem_descr_sg->num_elements);
4161
4162         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
4163                 if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
4164                         break;
4165
4166         ulp_icd_start = phba->fw_config.iscsi_icd_start[ulp_num];
4167
4168         arr_index = 0;
4169         idx = 0;
4170         while (idx < mem_descr_sg->num_elements) {
4171                 pfrag = mem_descr_sg->mem_array[idx].virtual_address;
4172
4173                 for (i = 0;
4174                      i < (mem_descr_sg->mem_array[idx].size) /
4175                      (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io);
4176                      i++) {
4177                         if (arr_index < phba->params.ios_per_ctrl)
4178                                 psgl_handle = phba->io_sgl_hndl_base[arr_index];
4179                         else
4180                                 psgl_handle = phba->eh_sgl_hndl_base[arr_index -
4181                                                 phba->params.ios_per_ctrl];
4182                         psgl_handle->pfrag = pfrag;
4183                         AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, pfrag, 0);
4184                         AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, pfrag, 0);
4185                         pfrag += phba->params.num_sge_per_io;
4186                         psgl_handle->sgl_index = ulp_icd_start + arr_index++;
4187                 }
4188                 idx++;
4189         }
4190         phba->io_sgl_free_index = 0;
4191         phba->io_sgl_alloc_index = 0;
4192         phba->eh_sgl_free_index = 0;
4193         phba->eh_sgl_alloc_index = 0;
4194         return 0;
4195 }
4196
4197 static int hba_setup_cid_tbls(struct beiscsi_hba *phba)
4198 {
4199         int ret;
4200         uint16_t i, ulp_num;
4201         struct ulp_cid_info *ptr_cid_info = NULL;
4202
4203         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4204                 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4205                         ptr_cid_info = kzalloc(sizeof(struct ulp_cid_info),
4206                                                GFP_KERNEL);
4207
4208                         if (!ptr_cid_info) {
4209                                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4210                                             "BM_%d : Failed to allocate memory"
4211                                             "for ULP_CID_INFO for ULP : %d\n",
4212                                             ulp_num);
4213                                 ret = -ENOMEM;
4214                                 goto free_memory;
4215
4216                         }
4217
4218                         /* Allocate memory for CID array */
4219                         ptr_cid_info->cid_array = kzalloc(sizeof(void *) *
4220                                                   BEISCSI_GET_CID_COUNT(phba,
4221                                                   ulp_num), GFP_KERNEL);
4222                         if (!ptr_cid_info->cid_array) {
4223                                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4224                                             "BM_%d : Failed to allocate memory"
4225                                             "for CID_ARRAY for ULP : %d\n",
4226                                             ulp_num);
4227                                 kfree(ptr_cid_info);
4228                                 ptr_cid_info = NULL;
4229                                 ret = -ENOMEM;
4230
4231                                 goto free_memory;
4232                         }
4233                         ptr_cid_info->avlbl_cids = BEISCSI_GET_CID_COUNT(
4234                                                    phba, ulp_num);
4235
4236                         /* Save the cid_info_array ptr */
4237                         phba->cid_array_info[ulp_num] = ptr_cid_info;
4238                 }
4239         }
4240         phba->ep_array = kzalloc(sizeof(struct iscsi_endpoint *) *
4241                                  phba->params.cxns_per_ctrl, GFP_KERNEL);
4242         if (!phba->ep_array) {
4243                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4244                             "BM_%d : Failed to allocate memory in "
4245                             "hba_setup_cid_tbls\n");
4246                 ret = -ENOMEM;
4247
4248                 goto free_memory;
4249         }
4250
4251         phba->conn_table = kzalloc(sizeof(struct beiscsi_conn *) *
4252                                    phba->params.cxns_per_ctrl, GFP_KERNEL);
4253         if (!phba->conn_table) {
4254                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4255                             "BM_%d : Failed to allocate memory in"
4256                             "hba_setup_cid_tbls\n");
4257
4258                 kfree(phba->ep_array);
4259                 phba->ep_array = NULL;
4260                 ret = -ENOMEM;
4261
4262                 goto free_memory;
4263         }
4264
4265         for (i = 0; i < phba->params.cxns_per_ctrl; i++) {
4266                 ulp_num = phba->phwi_ctrlr->wrb_context[i].ulp_num;
4267
4268                 ptr_cid_info = phba->cid_array_info[ulp_num];
4269                 ptr_cid_info->cid_array[ptr_cid_info->cid_alloc++] =
4270                         phba->phwi_ctrlr->wrb_context[i].cid;
4271
4272         }
4273
4274         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4275                 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4276                         ptr_cid_info = phba->cid_array_info[ulp_num];
4277
4278                         ptr_cid_info->cid_alloc = 0;
4279                         ptr_cid_info->cid_free = 0;
4280                 }
4281         }
4282         return 0;
4283
4284 free_memory:
4285         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4286                 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4287                         ptr_cid_info = phba->cid_array_info[ulp_num];
4288
4289                         if (ptr_cid_info) {
4290                                 kfree(ptr_cid_info->cid_array);
4291                                 kfree(ptr_cid_info);
4292                                 phba->cid_array_info[ulp_num] = NULL;
4293                         }
4294                 }
4295         }
4296
4297         return ret;
4298 }
4299
4300 static void hwi_enable_intr(struct beiscsi_hba *phba)
4301 {
4302         struct be_ctrl_info *ctrl = &phba->ctrl;
4303         struct hwi_controller *phwi_ctrlr;
4304         struct hwi_context_memory *phwi_context;
4305         struct be_queue_info *eq;
4306         u8 __iomem *addr;
4307         u32 reg, i;
4308         u32 enabled;
4309
4310         phwi_ctrlr = phba->phwi_ctrlr;
4311         phwi_context = phwi_ctrlr->phwi_ctxt;
4312
4313         addr = (u8 __iomem *) ((u8 __iomem *) ctrl->pcicfg +
4314                         PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
4315         reg = ioread32(addr);
4316
4317         enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4318         if (!enabled) {
4319                 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4320                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4321                             "BM_%d : reg =x%08x addr=%p\n", reg, addr);
4322                 iowrite32(reg, addr);
4323         }
4324
4325         if (!phba->msix_enabled) {
4326                 eq = &phwi_context->be_eq[0].q;
4327                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4328                             "BM_%d : eq->id=%d\n", eq->id);
4329
4330                 hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
4331         } else {
4332                 for (i = 0; i <= phba->num_cpus; i++) {
4333                         eq = &phwi_context->be_eq[i].q;
4334                         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
4335                                     "BM_%d : eq->id=%d\n", eq->id);
4336                         hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1);
4337                 }
4338         }
4339 }
4340
4341 static void hwi_disable_intr(struct beiscsi_hba *phba)
4342 {
4343         struct be_ctrl_info *ctrl = &phba->ctrl;
4344
4345         u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
4346         u32 reg = ioread32(addr);
4347
4348         u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4349         if (enabled) {
4350                 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
4351                 iowrite32(reg, addr);
4352         } else
4353                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
4354                             "BM_%d : In hwi_disable_intr, Already Disabled\n");
4355 }
4356
4357 /**
4358  * beiscsi_get_boot_info()- Get the boot session info
4359  * @phba: The device priv structure instance
4360  *
4361  * Get the boot target info and store in driver priv structure
4362  *
4363  * return values
4364  *      Success: 0
4365  *      Failure: Non-Zero Value
4366  **/
4367 static int beiscsi_get_boot_info(struct beiscsi_hba *phba)
4368 {
4369         struct be_cmd_get_session_resp *session_resp;
4370         struct be_dma_mem nonemb_cmd;
4371         unsigned int tag;
4372         unsigned int s_handle;
4373         int ret = -ENOMEM;
4374
4375         /* Get the session handle of the boot target */
4376         ret = be_mgmt_get_boot_shandle(phba, &s_handle);
4377         if (ret) {
4378                 beiscsi_log(phba, KERN_ERR,
4379                             BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
4380                             "BM_%d : No boot session\n");
4381
4382                 if (ret == -ENXIO)
4383                         phba->get_boot = 0;
4384
4385
4386                 return ret;
4387         }
4388         phba->get_boot = 0;
4389         nonemb_cmd.va = pci_zalloc_consistent(phba->ctrl.pdev,
4390                                               sizeof(*session_resp),
4391                                               &nonemb_cmd.dma);
4392         if (nonemb_cmd.va == NULL) {
4393                 beiscsi_log(phba, KERN_ERR,
4394                             BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
4395                             "BM_%d : Failed to allocate memory for"
4396                             "beiscsi_get_session_info\n");
4397
4398                 return -ENOMEM;
4399         }
4400
4401         tag = mgmt_get_session_info(phba, s_handle,
4402                                     &nonemb_cmd);
4403         if (!tag) {
4404                 beiscsi_log(phba, KERN_ERR,
4405                             BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
4406                             "BM_%d : beiscsi_get_session_info"
4407                             " Failed\n");
4408
4409                 goto boot_freemem;
4410         }
4411
4412         ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd);
4413         if (ret) {
4414                 beiscsi_log(phba, KERN_ERR,
4415                             BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
4416                             "BM_%d : beiscsi_get_session_info Failed");
4417
4418                 if (ret != -EBUSY)
4419                         goto boot_freemem;
4420                 else
4421                         return ret;
4422         }
4423
4424         session_resp = nonemb_cmd.va ;
4425
4426         memcpy(&phba->boot_sess, &session_resp->session_info,
4427                sizeof(struct mgmt_session_info));
4428
4429          beiscsi_logout_fw_sess(phba,
4430                                 phba->boot_sess.session_handle);
4431         ret = 0;
4432
4433 boot_freemem:
4434         pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
4435                     nonemb_cmd.va, nonemb_cmd.dma);
4436         return ret;
4437 }
4438
4439 static void beiscsi_boot_release(void *data)
4440 {
4441         struct beiscsi_hba *phba = data;
4442
4443         scsi_host_put(phba->shost);
4444 }
4445
4446 static int beiscsi_setup_boot_info(struct beiscsi_hba *phba)
4447 {
4448         struct iscsi_boot_kobj *boot_kobj;
4449
4450         /* it has been created previously */
4451         if (phba->boot_kset)
4452                 return 0;
4453
4454         /* get boot info using mgmt cmd */
4455         if (beiscsi_get_boot_info(phba))
4456                 /* Try to see if we can carry on without this */
4457                 return 0;
4458
4459         phba->boot_kset = iscsi_boot_create_host_kset(phba->shost->host_no);
4460         if (!phba->boot_kset)
4461                 return -ENOMEM;
4462
4463         /* get a ref because the show function will ref the phba */
4464         if (!scsi_host_get(phba->shost))
4465                 goto free_kset;
4466         boot_kobj = iscsi_boot_create_target(phba->boot_kset, 0, phba,
4467                                              beiscsi_show_boot_tgt_info,
4468                                              beiscsi_tgt_get_attr_visibility,
4469                                              beiscsi_boot_release);
4470         if (!boot_kobj)
4471                 goto put_shost;
4472
4473         if (!scsi_host_get(phba->shost))
4474                 goto free_kset;
4475         boot_kobj = iscsi_boot_create_initiator(phba->boot_kset, 0, phba,
4476                                                 beiscsi_show_boot_ini_info,
4477                                                 beiscsi_ini_get_attr_visibility,
4478                                                 beiscsi_boot_release);
4479         if (!boot_kobj)
4480                 goto put_shost;
4481
4482         if (!scsi_host_get(phba->shost))
4483                 goto free_kset;
4484         boot_kobj = iscsi_boot_create_ethernet(phba->boot_kset, 0, phba,
4485                                                beiscsi_show_boot_eth_info,
4486                                                beiscsi_eth_get_attr_visibility,
4487                                                beiscsi_boot_release);
4488         if (!boot_kobj)
4489                 goto put_shost;
4490         return 0;
4491
4492 put_shost:
4493         scsi_host_put(phba->shost);
4494 free_kset:
4495         iscsi_boot_destroy_kset(phba->boot_kset);
4496         phba->boot_kset = NULL;
4497         return -ENOMEM;
4498 }
4499
4500 static int beiscsi_init_port(struct beiscsi_hba *phba)
4501 {
4502         int ret;
4503
4504         ret = beiscsi_init_controller(phba);
4505         if (ret < 0) {
4506                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4507                             "BM_%d : beiscsi_dev_probe - Failed in"
4508                             "beiscsi_init_controller\n");
4509                 return ret;
4510         }
4511         ret = beiscsi_init_sgl_handle(phba);
4512         if (ret < 0) {
4513                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4514                             "BM_%d : beiscsi_dev_probe - Failed in"
4515                             "beiscsi_init_sgl_handle\n");
4516                 goto do_cleanup_ctrlr;
4517         }
4518
4519         if (hba_setup_cid_tbls(phba)) {
4520                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
4521                             "BM_%d : Failed in hba_setup_cid_tbls\n");
4522                 kfree(phba->io_sgl_hndl_base);
4523                 kfree(phba->eh_sgl_hndl_base);
4524                 goto do_cleanup_ctrlr;
4525         }
4526
4527         return ret;
4528
4529 do_cleanup_ctrlr:
4530         hwi_cleanup(phba);
4531         return ret;
4532 }
4533
4534 static void hwi_purge_eq(struct beiscsi_hba *phba)
4535 {
4536         struct hwi_controller *phwi_ctrlr;
4537         struct hwi_context_memory *phwi_context;
4538         struct be_queue_info *eq;
4539         struct be_eq_entry *eqe = NULL;
4540         int i, eq_msix;
4541         unsigned int num_processed;
4542
4543         phwi_ctrlr = phba->phwi_ctrlr;
4544         phwi_context = phwi_ctrlr->phwi_ctxt;
4545         if (phba->msix_enabled)
4546                 eq_msix = 1;
4547         else
4548                 eq_msix = 0;
4549
4550         for (i = 0; i < (phba->num_cpus + eq_msix); i++) {
4551                 eq = &phwi_context->be_eq[i].q;
4552                 eqe = queue_tail_node(eq);
4553                 num_processed = 0;
4554                 while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32]
4555                                         & EQE_VALID_MASK) {
4556                         AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0);
4557                         queue_tail_inc(eq);
4558                         eqe = queue_tail_node(eq);
4559                         num_processed++;
4560                 }
4561
4562                 if (num_processed)
4563                         hwi_ring_eq_db(phba, eq->id, 1, num_processed, 1, 1);
4564         }
4565 }
4566
4567 static void beiscsi_clean_port(struct beiscsi_hba *phba)
4568 {
4569         int mgmt_status, ulp_num;
4570         struct ulp_cid_info *ptr_cid_info = NULL;
4571
4572         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4573                 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4574                         mgmt_status = mgmt_epfw_cleanup(phba, ulp_num);
4575                         if (mgmt_status)
4576                                 beiscsi_log(phba, KERN_WARNING,
4577                                             BEISCSI_LOG_INIT,
4578                                             "BM_%d : mgmt_epfw_cleanup FAILED"
4579                                             " for ULP_%d\n", ulp_num);
4580                 }
4581         }
4582
4583         hwi_purge_eq(phba);
4584         hwi_cleanup(phba);
4585         kfree(phba->io_sgl_hndl_base);
4586         kfree(phba->eh_sgl_hndl_base);
4587         kfree(phba->ep_array);
4588         kfree(phba->conn_table);
4589
4590         for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
4591                 if (test_bit(ulp_num, (void *)&phba->fw_config.ulp_supported)) {
4592                         ptr_cid_info = phba->cid_array_info[ulp_num];
4593
4594                         if (ptr_cid_info) {
4595                                 kfree(ptr_cid_info->cid_array);
4596                                 kfree(ptr_cid_info);
4597                                 phba->cid_array_info[ulp_num] = NULL;
4598                         }
4599                 }
4600         }
4601
4602 }
4603
4604 /**
4605  * beiscsi_free_mgmt_task_handles()- Free driver CXN resources
4606  * @beiscsi_conn: ptr to the conn to be cleaned up
4607  * @task: ptr to iscsi_task resource to be freed.
4608  *
4609  * Free driver mgmt resources binded to CXN.
4610  **/
4611 void
4612 beiscsi_free_mgmt_task_handles(struct beiscsi_conn *beiscsi_conn,
4613                                 struct iscsi_task *task)
4614 {
4615         struct beiscsi_io_task *io_task;
4616         struct beiscsi_hba *phba = beiscsi_conn->phba;
4617         struct hwi_wrb_context *pwrb_context;
4618         struct hwi_controller *phwi_ctrlr;
4619         uint16_t cri_index = BE_GET_CRI_FROM_CID(
4620                                 beiscsi_conn->beiscsi_conn_cid);
4621
4622         phwi_ctrlr = phba->phwi_ctrlr;
4623         pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4624
4625         io_task = task->dd_data;
4626
4627         if (io_task->pwrb_handle) {
4628                 memset(io_task->pwrb_handle->pwrb, 0,
4629                        sizeof(struct iscsi_wrb));
4630                 free_wrb_handle(phba, pwrb_context,
4631                                 io_task->pwrb_handle);
4632                 io_task->pwrb_handle = NULL;
4633         }
4634
4635         if (io_task->psgl_handle) {
4636                 free_mgmt_sgl_handle(phba,
4637                                      io_task->psgl_handle);
4638                 io_task->psgl_handle = NULL;
4639         }
4640
4641         if (io_task->mtask_addr) {
4642                 pci_unmap_single(phba->pcidev,
4643                                  io_task->mtask_addr,
4644                                  io_task->mtask_data_count,
4645                                  PCI_DMA_TODEVICE);
4646                 io_task->mtask_addr = 0;
4647         }
4648 }
4649
4650 /**
4651  * beiscsi_cleanup_task()- Free driver resources of the task
4652  * @task: ptr to the iscsi task
4653  *
4654  **/
4655 static void beiscsi_cleanup_task(struct iscsi_task *task)
4656 {
4657         struct beiscsi_io_task *io_task = task->dd_data;
4658         struct iscsi_conn *conn = task->conn;
4659         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4660         struct beiscsi_hba *phba = beiscsi_conn->phba;
4661         struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
4662         struct hwi_wrb_context *pwrb_context;
4663         struct hwi_controller *phwi_ctrlr;
4664         uint16_t cri_index = BE_GET_CRI_FROM_CID(
4665                              beiscsi_conn->beiscsi_conn_cid);
4666
4667         phwi_ctrlr = phba->phwi_ctrlr;
4668         pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4669
4670         if (io_task->cmd_bhs) {
4671                 pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
4672                               io_task->bhs_pa.u.a64.address);
4673                 io_task->cmd_bhs = NULL;
4674         }
4675
4676         if (task->sc) {
4677                 if (io_task->pwrb_handle) {
4678                         free_wrb_handle(phba, pwrb_context,
4679                                         io_task->pwrb_handle);
4680                         io_task->pwrb_handle = NULL;
4681                 }
4682
4683                 if (io_task->psgl_handle) {
4684                         free_io_sgl_handle(phba, io_task->psgl_handle);
4685                         io_task->psgl_handle = NULL;
4686                 }
4687
4688                 if (io_task->scsi_cmnd) {
4689                         scsi_dma_unmap(io_task->scsi_cmnd);
4690                         io_task->scsi_cmnd = NULL;
4691                 }
4692         } else {
4693                 if (!beiscsi_conn->login_in_progress)
4694                         beiscsi_free_mgmt_task_handles(beiscsi_conn, task);
4695         }
4696 }
4697
4698 void
4699 beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn,
4700                            struct beiscsi_offload_params *params)
4701 {
4702         struct wrb_handle *pwrb_handle;
4703         struct hwi_wrb_context *pwrb_context = NULL;
4704         struct beiscsi_hba *phba = beiscsi_conn->phba;
4705         struct iscsi_task *task = beiscsi_conn->task;
4706         struct iscsi_session *session = task->conn->session;
4707         u32 doorbell = 0;
4708
4709         /*
4710          * We can always use 0 here because it is reserved by libiscsi for
4711          * login/startup related tasks.
4712          */
4713         beiscsi_conn->login_in_progress = 0;
4714         spin_lock_bh(&session->back_lock);
4715         beiscsi_cleanup_task(task);
4716         spin_unlock_bh(&session->back_lock);
4717
4718         pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid,
4719                                        &pwrb_context);
4720
4721         /* Check for the adapter family */
4722         if (is_chip_be2_be3r(phba))
4723                 beiscsi_offload_cxn_v0(params, pwrb_handle,
4724                                        phba->init_mem,
4725                                        pwrb_context);
4726         else
4727                 beiscsi_offload_cxn_v2(params, pwrb_handle,
4728                                        pwrb_context);
4729
4730         be_dws_le_to_cpu(pwrb_handle->pwrb,
4731                          sizeof(struct iscsi_target_context_update_wrb));
4732
4733         doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4734         doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK)
4735                              << DB_DEF_PDU_WRB_INDEX_SHIFT;
4736         doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4737         iowrite32(doorbell, phba->db_va +
4738                   beiscsi_conn->doorbell_offset);
4739
4740         /*
4741          * There is no completion for CONTEXT_UPDATE. The completion of next
4742          * WRB posted guarantees FW's processing and DMA'ing of it.
4743          * Use beiscsi_put_wrb_handle to put it back in the pool which makes
4744          * sure zero'ing or reuse of the WRB only after wrbs_per_cxn.
4745          */
4746         beiscsi_put_wrb_handle(pwrb_context, pwrb_handle,
4747                                phba->params.wrbs_per_cxn);
4748         beiscsi_log(phba, KERN_INFO,
4749                     BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4750                     "BM_%d : put CONTEXT_UPDATE pwrb_handle=%p free_index=0x%x wrb_handles_available=%d\n",
4751                     pwrb_handle, pwrb_context->free_index,
4752                     pwrb_context->wrb_handles_available);
4753 }
4754
4755 static void beiscsi_parse_pdu(struct iscsi_conn *conn, itt_t itt,
4756                               int *index, int *age)
4757 {
4758         *index = (int)itt;
4759         if (age)
4760                 *age = conn->session->age;
4761 }
4762
4763 /**
4764  * beiscsi_alloc_pdu - allocates pdu and related resources
4765  * @task: libiscsi task
4766  * @opcode: opcode of pdu for task
4767  *
4768  * This is called with the session lock held. It will allocate
4769  * the wrb and sgl if needed for the command. And it will prep
4770  * the pdu's itt. beiscsi_parse_pdu will later translate
4771  * the pdu itt to the libiscsi task itt.
4772  */
4773 static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
4774 {
4775         struct beiscsi_io_task *io_task = task->dd_data;
4776         struct iscsi_conn *conn = task->conn;
4777         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4778         struct beiscsi_hba *phba = beiscsi_conn->phba;
4779         struct hwi_wrb_context *pwrb_context;
4780         struct hwi_controller *phwi_ctrlr;
4781         itt_t itt;
4782         uint16_t cri_index = 0;
4783         struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess;
4784         dma_addr_t paddr;
4785
4786         io_task->cmd_bhs = pci_pool_alloc(beiscsi_sess->bhs_pool,
4787                                           GFP_ATOMIC, &paddr);
4788         if (!io_task->cmd_bhs)
4789                 return -ENOMEM;
4790         io_task->bhs_pa.u.a64.address = paddr;
4791         io_task->libiscsi_itt = (itt_t)task->itt;
4792         io_task->conn = beiscsi_conn;
4793
4794         task->hdr = (struct iscsi_hdr *)&io_task->cmd_bhs->iscsi_hdr;
4795         task->hdr_max = sizeof(struct be_cmd_bhs);
4796         io_task->psgl_handle = NULL;
4797         io_task->pwrb_handle = NULL;
4798
4799         if (task->sc) {
4800                 io_task->psgl_handle = alloc_io_sgl_handle(phba);
4801                 if (!io_task->psgl_handle) {
4802                         beiscsi_log(phba, KERN_ERR,
4803                                     BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4804                                     "BM_%d : Alloc of IO_SGL_ICD Failed"
4805                                     "for the CID : %d\n",
4806                                     beiscsi_conn->beiscsi_conn_cid);
4807                         goto free_hndls;
4808                 }
4809                 io_task->pwrb_handle = alloc_wrb_handle(phba,
4810                                         beiscsi_conn->beiscsi_conn_cid,
4811                                         &io_task->pwrb_context);
4812                 if (!io_task->pwrb_handle) {
4813                         beiscsi_log(phba, KERN_ERR,
4814                                     BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4815                                     "BM_%d : Alloc of WRB_HANDLE Failed"
4816                                     "for the CID : %d\n",
4817                                     beiscsi_conn->beiscsi_conn_cid);
4818                         goto free_io_hndls;
4819                 }
4820         } else {
4821                 io_task->scsi_cmnd = NULL;
4822                 if ((opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) {
4823                         beiscsi_conn->task = task;
4824                         if (!beiscsi_conn->login_in_progress) {
4825                                 io_task->psgl_handle = (struct sgl_handle *)
4826                                                 alloc_mgmt_sgl_handle(phba);
4827                                 if (!io_task->psgl_handle) {
4828                                         beiscsi_log(phba, KERN_ERR,
4829                                                     BEISCSI_LOG_IO |
4830                                                     BEISCSI_LOG_CONFIG,
4831                                                     "BM_%d : Alloc of MGMT_SGL_ICD Failed"
4832                                                     "for the CID : %d\n",
4833                                                     beiscsi_conn->
4834                                                     beiscsi_conn_cid);
4835                                         goto free_hndls;
4836                                 }
4837
4838                                 beiscsi_conn->login_in_progress = 1;
4839                                 beiscsi_conn->plogin_sgl_handle =
4840                                                         io_task->psgl_handle;
4841                                 io_task->pwrb_handle =
4842                                         alloc_wrb_handle(phba,
4843                                         beiscsi_conn->beiscsi_conn_cid,
4844                                         &io_task->pwrb_context);
4845                                 if (!io_task->pwrb_handle) {
4846                                         beiscsi_log(phba, KERN_ERR,
4847                                                     BEISCSI_LOG_IO |
4848                                                     BEISCSI_LOG_CONFIG,
4849                                                     "BM_%d : Alloc of WRB_HANDLE Failed"
4850                                                     "for the CID : %d\n",
4851                                                     beiscsi_conn->
4852                                                     beiscsi_conn_cid);
4853                                         goto free_mgmt_hndls;
4854                                 }
4855                                 beiscsi_conn->plogin_wrb_handle =
4856                                                         io_task->pwrb_handle;
4857
4858                         } else {
4859                                 io_task->psgl_handle =
4860                                                 beiscsi_conn->plogin_sgl_handle;
4861                                 io_task->pwrb_handle =
4862                                                 beiscsi_conn->plogin_wrb_handle;
4863                         }
4864                 } else {
4865                         io_task->psgl_handle = alloc_mgmt_sgl_handle(phba);
4866                         if (!io_task->psgl_handle) {
4867                                 beiscsi_log(phba, KERN_ERR,
4868                                             BEISCSI_LOG_IO |
4869                                             BEISCSI_LOG_CONFIG,
4870                                             "BM_%d : Alloc of MGMT_SGL_ICD Failed"
4871                                             "for the CID : %d\n",
4872                                             beiscsi_conn->
4873                                             beiscsi_conn_cid);
4874                                 goto free_hndls;
4875                         }
4876                         io_task->pwrb_handle =
4877                                         alloc_wrb_handle(phba,
4878                                         beiscsi_conn->beiscsi_conn_cid,
4879                                         &io_task->pwrb_context);
4880                         if (!io_task->pwrb_handle) {
4881                                 beiscsi_log(phba, KERN_ERR,
4882                                             BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG,
4883                                             "BM_%d : Alloc of WRB_HANDLE Failed"
4884                                             "for the CID : %d\n",
4885                                             beiscsi_conn->beiscsi_conn_cid);
4886                                 goto free_mgmt_hndls;
4887                         }
4888
4889                 }
4890         }
4891         itt = (itt_t) cpu_to_be32(((unsigned int)io_task->pwrb_handle->
4892                                  wrb_index << 16) | (unsigned int)
4893                                 (io_task->psgl_handle->sgl_index));
4894         io_task->pwrb_handle->pio_handle = task;
4895
4896         io_task->cmd_bhs->iscsi_hdr.itt = itt;
4897         return 0;
4898
4899 free_io_hndls:
4900         free_io_sgl_handle(phba, io_task->psgl_handle);
4901         goto free_hndls;
4902 free_mgmt_hndls:
4903         free_mgmt_sgl_handle(phba, io_task->psgl_handle);
4904         io_task->psgl_handle = NULL;
4905 free_hndls:
4906         phwi_ctrlr = phba->phwi_ctrlr;
4907         cri_index = BE_GET_CRI_FROM_CID(
4908         beiscsi_conn->beiscsi_conn_cid);
4909         pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
4910         if (io_task->pwrb_handle)
4911                 free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle);
4912         io_task->pwrb_handle = NULL;
4913         pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs,
4914                       io_task->bhs_pa.u.a64.address);
4915         io_task->cmd_bhs = NULL;
4916         return -ENOMEM;
4917 }
4918 int beiscsi_iotask_v2(struct iscsi_task *task, struct scatterlist *sg,
4919                        unsigned int num_sg, unsigned int xferlen,
4920                        unsigned int writedir)
4921 {
4922
4923         struct beiscsi_io_task *io_task = task->dd_data;
4924         struct iscsi_conn *conn = task->conn;
4925         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4926         struct beiscsi_hba *phba = beiscsi_conn->phba;
4927         struct iscsi_wrb *pwrb = NULL;
4928         unsigned int doorbell = 0;
4929
4930         pwrb = io_task->pwrb_handle->pwrb;
4931
4932         io_task->bhs_len = sizeof(struct be_cmd_bhs);
4933
4934         if (writedir) {
4935                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,
4936                               INI_WR_CMD);
4937                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 1);
4938         } else {
4939                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, type, pwrb,
4940                               INI_RD_CMD);
4941                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, dsp, pwrb, 0);
4942         }
4943
4944         io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb_v2,
4945                                           type, pwrb);
4946
4947         AMAP_SET_BITS(struct amap_iscsi_wrb_v2, lun, pwrb,
4948                       cpu_to_be16(*(unsigned short *)
4949                       &io_task->cmd_bhs->iscsi_hdr.lun));
4950         AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb, xferlen);
4951         AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,
4952                       io_task->pwrb_handle->wrb_index);
4953         AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
4954                       be32_to_cpu(task->cmdsn));
4955         AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,
4956                       io_task->psgl_handle->sgl_index);
4957
4958         hwi_write_sgl_v2(pwrb, sg, num_sg, io_task);
4959         AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
4960                       io_task->pwrb_handle->wrb_index);
4961         if (io_task->pwrb_context->plast_wrb)
4962                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
4963                               io_task->pwrb_context->plast_wrb,
4964                               io_task->pwrb_handle->wrb_index);
4965         io_task->pwrb_context->plast_wrb = pwrb;
4966
4967         be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
4968
4969         doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
4970         doorbell |= (io_task->pwrb_handle->wrb_index &
4971                      DB_DEF_PDU_WRB_INDEX_MASK) <<
4972                      DB_DEF_PDU_WRB_INDEX_SHIFT;
4973         doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
4974         iowrite32(doorbell, phba->db_va +
4975                   beiscsi_conn->doorbell_offset);
4976         return 0;
4977 }
4978
4979 static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg,
4980                           unsigned int num_sg, unsigned int xferlen,
4981                           unsigned int writedir)
4982 {
4983
4984         struct beiscsi_io_task *io_task = task->dd_data;
4985         struct iscsi_conn *conn = task->conn;
4986         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
4987         struct beiscsi_hba *phba = beiscsi_conn->phba;
4988         struct iscsi_wrb *pwrb = NULL;
4989         unsigned int doorbell = 0;
4990
4991         pwrb = io_task->pwrb_handle->pwrb;
4992         io_task->bhs_len = sizeof(struct be_cmd_bhs);
4993
4994         if (writedir) {
4995                 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
4996                               INI_WR_CMD);
4997                 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1);
4998         } else {
4999                 AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb,
5000                               INI_RD_CMD);
5001                 AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0);
5002         }
5003
5004         io_task->wrb_type = AMAP_GET_BITS(struct amap_iscsi_wrb,
5005                                           type, pwrb);
5006
5007         AMAP_SET_BITS(struct amap_iscsi_wrb, lun, pwrb,
5008                       cpu_to_be16(*(unsigned short *)
5009                                   &io_task->cmd_bhs->iscsi_hdr.lun));
5010         AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, xferlen);
5011         AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
5012                       io_task->pwrb_handle->wrb_index);
5013         AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
5014                       be32_to_cpu(task->cmdsn));
5015         AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
5016                       io_task->psgl_handle->sgl_index);
5017
5018         hwi_write_sgl(pwrb, sg, num_sg, io_task);
5019
5020         AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
5021                       io_task->pwrb_handle->wrb_index);
5022         if (io_task->pwrb_context->plast_wrb)
5023                 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
5024                               io_task->pwrb_context->plast_wrb,
5025                               io_task->pwrb_handle->wrb_index);
5026         io_task->pwrb_context->plast_wrb = pwrb;
5027
5028         be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb));
5029
5030         doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK;
5031         doorbell |= (io_task->pwrb_handle->wrb_index &
5032                      DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
5033         doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
5034
5035         iowrite32(doorbell, phba->db_va +
5036                   beiscsi_conn->doorbell_offset);
5037         return 0;
5038 }
5039
5040 static int beiscsi_mtask(struct iscsi_task *task)
5041 {
5042         struct beiscsi_io_task *io_task = task->dd_data;
5043         struct iscsi_conn *conn = task->conn;
5044         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
5045         struct beiscsi_hba *phba = beiscsi_conn->phba;
5046         struct iscsi_wrb *pwrb = NULL;
5047         unsigned int doorbell = 0;
5048         unsigned int cid;
5049         unsigned int pwrb_typeoffset = 0;
5050         int ret = 0;
5051
5052         cid = beiscsi_conn->beiscsi_conn_cid;
5053         pwrb = io_task->pwrb_handle->pwrb;
5054         memset(pwrb, 0, sizeof(*pwrb));
5055
5056         if (is_chip_be2_be3r(phba)) {
5057                 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb,
5058                               be32_to_cpu(task->cmdsn));
5059                 AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb,
5060                               io_task->pwrb_handle->wrb_index);
5061                 AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb,
5062                               io_task->psgl_handle->sgl_index);
5063                 AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb,
5064                               task->data_count);
5065                 AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb,
5066                               io_task->pwrb_handle->wrb_index);
5067                 if (io_task->pwrb_context->plast_wrb)
5068                         AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb,
5069                                       io_task->pwrb_context->plast_wrb,
5070                                       io_task->pwrb_handle->wrb_index);
5071                 io_task->pwrb_context->plast_wrb = pwrb;
5072
5073                 pwrb_typeoffset = BE_WRB_TYPE_OFFSET;
5074         } else {
5075                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, cmdsn_itt, pwrb,
5076                               be32_to_cpu(task->cmdsn));
5077                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, wrb_idx, pwrb,
5078                               io_task->pwrb_handle->wrb_index);
5079                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, sgl_idx, pwrb,
5080                               io_task->psgl_handle->sgl_index);
5081                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, r2t_exp_dtl, pwrb,
5082                               task->data_count);
5083                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb, pwrb,
5084                               io_task->pwrb_handle->wrb_index);
5085                 if (io_task->pwrb_context->plast_wrb)
5086                         AMAP_SET_BITS(struct amap_iscsi_wrb_v2, ptr2nextwrb,
5087                                       io_task->pwrb_context->plast_wrb,
5088                                       io_task->pwrb_handle->wrb_index);
5089                 io_task->pwrb_context->plast_wrb = pwrb;
5090
5091                 pwrb_typeoffset = SKH_WRB_TYPE_OFFSET;
5092         }
5093
5094
5095         switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
5096         case ISCSI_OP_LOGIN:
5097                 AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1);
5098                 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
5099                 ret = hwi_write_buffer(pwrb, task);
5100                 break;
5101         case ISCSI_OP_NOOP_OUT:
5102                 if (task->hdr->ttt != ISCSI_RESERVED_TAG) {
5103                         ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
5104                         if (is_chip_be2_be3r(phba))
5105                                 AMAP_SET_BITS(struct amap_iscsi_wrb,
5106                                               dmsg, pwrb, 1);
5107                         else
5108                                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
5109                                               dmsg, pwrb, 1);
5110                 } else {
5111                         ADAPTER_SET_WRB_TYPE(pwrb, INI_RD_CMD, pwrb_typeoffset);
5112                         if (is_chip_be2_be3r(phba))
5113                                 AMAP_SET_BITS(struct amap_iscsi_wrb,
5114                                               dmsg, pwrb, 0);
5115                         else
5116                                 AMAP_SET_BITS(struct amap_iscsi_wrb_v2,
5117                                               dmsg, pwrb, 0);
5118                 }
5119                 ret = hwi_write_buffer(pwrb, task);
5120                 break;
5121         case ISCSI_OP_TEXT:
5122                 ADAPTER_SET_WRB_TYPE(pwrb, TGT_DM_CMD, pwrb_typeoffset);
5123                 ret = hwi_write_buffer(pwrb, task);
5124                 break;
5125         case ISCSI_OP_SCSI_TMFUNC:
5126                 ADAPTER_SET_WRB_TYPE(pwrb, INI_TMF_CMD, pwrb_typeoffset);
5127                 ret = hwi_write_buffer(pwrb, task);
5128                 break;
5129         case ISCSI_OP_LOGOUT:
5130                 ADAPTER_SET_WRB_TYPE(pwrb, HWH_TYPE_LOGOUT, pwrb_typeoffset);
5131                 ret = hwi_write_buffer(pwrb, task);
5132                 break;
5133
5134         default:
5135                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
5136                             "BM_%d : opcode =%d Not supported\n",
5137                             task->hdr->opcode & ISCSI_OPCODE_MASK);
5138
5139                 return -EINVAL;
5140         }
5141
5142         if (ret)
5143                 return ret;
5144
5145         /* Set the task type */
5146         io_task->wrb_type = (is_chip_be2_be3r(phba)) ?
5147                 AMAP_GET_BITS(struct amap_iscsi_wrb, type, pwrb) :
5148                 AMAP_GET_BITS(struct amap_iscsi_wrb_v2, type, pwrb);
5149
5150         doorbell |= cid & DB_WRB_POST_CID_MASK;
5151         doorbell |= (io_task->pwrb_handle->wrb_index &
5152                      DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT;
5153         doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT;
5154         iowrite32(doorbell, phba->db_va +
5155                   beiscsi_conn->doorbell_offset);
5156         return 0;
5157 }
5158
5159 static int beiscsi_task_xmit(struct iscsi_task *task)
5160 {
5161         struct beiscsi_io_task *io_task = task->dd_data;
5162         struct scsi_cmnd *sc = task->sc;
5163         struct beiscsi_hba *phba;
5164         struct scatterlist *sg;
5165         int num_sg;
5166         unsigned int  writedir = 0, xferlen = 0;
5167
5168         if (!io_task->conn->login_in_progress)
5169                 task->hdr->exp_statsn = 0;
5170
5171         if (!sc)
5172                 return beiscsi_mtask(task);
5173
5174         io_task->scsi_cmnd = sc;
5175         num_sg = scsi_dma_map(sc);
5176         phba = io_task->conn->phba;
5177         if (num_sg < 0) {
5178                 beiscsi_log(phba, KERN_ERR,
5179                             BEISCSI_LOG_IO | BEISCSI_LOG_ISCSI,
5180                             "BM_%d : scsi_dma_map Failed "
5181                             "Driver_ITT : 0x%x ITT : 0x%x Xferlen : 0x%x\n",
5182                             be32_to_cpu(io_task->cmd_bhs->iscsi_hdr.itt),
5183                             io_task->libiscsi_itt, scsi_bufflen(sc));
5184
5185                 return num_sg;
5186         }
5187         xferlen = scsi_bufflen(sc);
5188         sg = scsi_sglist(sc);
5189         if (sc->sc_data_direction == DMA_TO_DEVICE)
5190                 writedir = 1;
5191          else
5192                 writedir = 0;
5193
5194          return phba->iotask_fn(task, sg, num_sg, xferlen, writedir);
5195 }
5196
5197 /**
5198  * beiscsi_bsg_request - handle bsg request from ISCSI transport
5199  * @job: job to handle
5200  */
5201 static int beiscsi_bsg_request(struct bsg_job *job)
5202 {
5203         struct Scsi_Host *shost;
5204         struct beiscsi_hba *phba;
5205         struct iscsi_bsg_request *bsg_req = job->request;
5206         int rc = -EINVAL;
5207         unsigned int tag;
5208         struct be_dma_mem nonemb_cmd;
5209         struct be_cmd_resp_hdr *resp;
5210         struct iscsi_bsg_reply *bsg_reply = job->reply;
5211         unsigned short status, extd_status;
5212
5213         shost = iscsi_job_to_shost(job);
5214         phba = iscsi_host_priv(shost);
5215
5216         switch (bsg_req->msgcode) {
5217         case ISCSI_BSG_HST_VENDOR:
5218                 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
5219                                         job->request_payload.payload_len,
5220                                         &nonemb_cmd.dma);
5221                 if (nonemb_cmd.va == NULL) {
5222                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
5223                                     "BM_%d : Failed to allocate memory for "
5224                                     "beiscsi_bsg_request\n");
5225                         return -ENOMEM;
5226                 }
5227                 tag = mgmt_vendor_specific_fw_cmd(&phba->ctrl, phba, job,
5228                                                   &nonemb_cmd);
5229                 if (!tag) {
5230                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
5231                                     "BM_%d : MBX Tag Allocation Failed\n");
5232
5233                         pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
5234                                             nonemb_cmd.va, nonemb_cmd.dma);
5235                         return -EAGAIN;
5236                 }
5237
5238                 rc = wait_event_interruptible_timeout(
5239                                         phba->ctrl.mcc_wait[tag],
5240                                         phba->ctrl.mcc_tag_status[tag],
5241                                         msecs_to_jiffies(
5242                                         BEISCSI_HOST_MBX_TIMEOUT));
5243                 extd_status = (phba->ctrl.mcc_tag_status[tag] &
5244                                CQE_STATUS_ADDL_MASK) >> CQE_STATUS_ADDL_SHIFT;
5245                 status = phba->ctrl.mcc_tag_status[tag] & CQE_STATUS_MASK;
5246                 free_mcc_wrb(&phba->ctrl, tag);
5247                 resp = (struct be_cmd_resp_hdr *)nonemb_cmd.va;
5248                 sg_copy_from_buffer(job->reply_payload.sg_list,
5249                                     job->reply_payload.sg_cnt,
5250                                     nonemb_cmd.va, (resp->response_length
5251                                     + sizeof(*resp)));
5252                 bsg_reply->reply_payload_rcv_len = resp->response_length;
5253                 bsg_reply->result = status;
5254                 bsg_job_done(job, bsg_reply->result,
5255                              bsg_reply->reply_payload_rcv_len);
5256                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
5257                                     nonemb_cmd.va, nonemb_cmd.dma);
5258                 if (status || extd_status) {
5259                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
5260                                     "BM_%d : MBX Cmd Failed"
5261                                     " status = %d extd_status = %d\n",
5262                                     status, extd_status);
5263
5264                         return -EIO;
5265                 } else {
5266                         rc = 0;
5267                 }
5268                 break;
5269
5270         default:
5271                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
5272                                 "BM_%d : Unsupported bsg command: 0x%x\n",
5273                                 bsg_req->msgcode);
5274                 break;
5275         }
5276
5277         return rc;
5278 }
5279
5280 void beiscsi_hba_attrs_init(struct beiscsi_hba *phba)
5281 {
5282         /* Set the logging parameter */
5283         beiscsi_log_enable_init(phba, beiscsi_log_enable);
5284 }
5285
5286 /*
5287  * beiscsi_quiesce()- Cleanup Driver resources
5288  * @phba: Instance Priv structure
5289  * @unload_state:i Clean or EEH unload state
5290  *
5291  * Free the OS and HW resources held by the driver
5292  **/
5293 static void beiscsi_quiesce(struct beiscsi_hba *phba,
5294                 uint32_t unload_state)
5295 {
5296         struct hwi_controller *phwi_ctrlr;
5297         struct hwi_context_memory *phwi_context;
5298         struct be_eq_obj *pbe_eq;
5299         unsigned int i, msix_vec;
5300
5301         phwi_ctrlr = phba->phwi_ctrlr;
5302         phwi_context = phwi_ctrlr->phwi_ctxt;
5303         hwi_disable_intr(phba);
5304         if (phba->msix_enabled) {
5305                 for (i = 0; i <= phba->num_cpus; i++) {
5306                         msix_vec = phba->msix_entries[i].vector;
5307                         free_irq(msix_vec, &phwi_context->be_eq[i]);
5308                         kfree(phba->msi_name[i]);
5309                 }
5310         } else
5311                 if (phba->pcidev->irq)
5312                         free_irq(phba->pcidev->irq, phba);
5313         pci_disable_msix(phba->pcidev);
5314         cancel_delayed_work_sync(&phba->beiscsi_hw_check_task);
5315
5316         for (i = 0; i < phba->num_cpus; i++) {
5317                 pbe_eq = &phwi_context->be_eq[i];
5318                 irq_poll_disable(&pbe_eq->iopoll);
5319         }
5320
5321         if (unload_state == BEISCSI_CLEAN_UNLOAD) {
5322                 destroy_workqueue(phba->wq);
5323                 beiscsi_clean_port(phba);
5324                 beiscsi_free_mem(phba);
5325
5326                 beiscsi_unmap_pci_function(phba);
5327                 pci_free_consistent(phba->pcidev,
5328                                     phba->ctrl.mbox_mem_alloced.size,
5329                                     phba->ctrl.mbox_mem_alloced.va,
5330                                     phba->ctrl.mbox_mem_alloced.dma);
5331         } else {
5332                 hwi_purge_eq(phba);
5333                 hwi_cleanup(phba);
5334         }
5335
5336 }
5337
5338 static void beiscsi_remove(struct pci_dev *pcidev)
5339 {
5340         struct beiscsi_hba *phba = NULL;
5341
5342         phba = pci_get_drvdata(pcidev);
5343         if (!phba) {
5344                 dev_err(&pcidev->dev, "beiscsi_remove called with no phba\n");
5345                 return;
5346         }
5347
5348         beiscsi_destroy_def_ifaces(phba);
5349         iscsi_boot_destroy_kset(phba->boot_kset);
5350         iscsi_host_remove(phba->shost);
5351         beiscsi_quiesce(phba, BEISCSI_CLEAN_UNLOAD);
5352         pci_dev_put(phba->pcidev);
5353         iscsi_host_free(phba->shost);
5354         pci_disable_pcie_error_reporting(pcidev);
5355         pci_set_drvdata(pcidev, NULL);
5356         pci_release_regions(pcidev);
5357         pci_disable_device(pcidev);
5358 }
5359
5360 static void beiscsi_msix_enable(struct beiscsi_hba *phba)
5361 {
5362         int i, status;
5363
5364         for (i = 0; i <= phba->num_cpus; i++)
5365                 phba->msix_entries[i].entry = i;
5366
5367         status = pci_enable_msix_range(phba->pcidev, phba->msix_entries,
5368                                        phba->num_cpus + 1, phba->num_cpus + 1);
5369         if (status > 0)
5370                 phba->msix_enabled = true;
5371
5372         return;
5373 }
5374
5375 static void be_eqd_update(struct beiscsi_hba *phba)
5376 {
5377         struct be_set_eqd set_eqd[MAX_CPUS];
5378         struct be_aic_obj *aic;
5379         struct be_eq_obj *pbe_eq;
5380         struct hwi_controller *phwi_ctrlr;
5381         struct hwi_context_memory *phwi_context;
5382         int eqd, i, num = 0;
5383         ulong now;
5384         u32 pps, delta;
5385         unsigned int tag;
5386
5387         phwi_ctrlr = phba->phwi_ctrlr;
5388         phwi_context = phwi_ctrlr->phwi_ctxt;
5389
5390         for (i = 0; i <= phba->num_cpus; i++) {
5391                 aic = &phba->aic_obj[i];
5392                 pbe_eq = &phwi_context->be_eq[i];
5393                 now = jiffies;
5394                 if (!aic->jiffs || time_before(now, aic->jiffs) ||
5395                     pbe_eq->cq_count < aic->eq_prev) {
5396                         aic->jiffs = now;
5397                         aic->eq_prev = pbe_eq->cq_count;
5398                         continue;
5399                 }
5400                 delta = jiffies_to_msecs(now - aic->jiffs);
5401                 pps = (((u32)(pbe_eq->cq_count - aic->eq_prev) * 1000) / delta);
5402                 eqd = (pps / 1500) << 2;
5403
5404                 if (eqd < 8)
5405                         eqd = 0;
5406                 eqd = min_t(u32, eqd, phwi_context->max_eqd);
5407                 eqd = max_t(u32, eqd, phwi_context->min_eqd);
5408
5409                 aic->jiffs = now;
5410                 aic->eq_prev = pbe_eq->cq_count;
5411
5412                 if (eqd != aic->prev_eqd) {
5413                         set_eqd[num].delay_multiplier = (eqd * 65)/100;
5414                         set_eqd[num].eq_id = pbe_eq->q.id;
5415                         aic->prev_eqd = eqd;
5416                         num++;
5417                 }
5418         }
5419         if (num) {
5420                 tag = be_cmd_modify_eq_delay(phba, set_eqd, num);
5421                 if (tag)
5422                         beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
5423         }
5424 }
5425
5426 static void be_check_boot_session(struct beiscsi_hba *phba)
5427 {
5428         if (beiscsi_setup_boot_info(phba))
5429                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5430                             "BM_%d : Could not set up "
5431                             "iSCSI boot info on async event.\n");
5432 }
5433
5434 /*
5435  * beiscsi_hw_health_check()- Check adapter health
5436  * @work: work item to check HW health
5437  *
5438  * Check if adapter in an unrecoverable state or not.
5439  **/
5440 static void
5441 beiscsi_hw_health_check(struct work_struct *work)
5442 {
5443         struct beiscsi_hba *phba =
5444                 container_of(work, struct beiscsi_hba,
5445                              beiscsi_hw_check_task.work);
5446
5447         be_eqd_update(phba);
5448
5449         if (phba->state & BE_ADAPTER_CHECK_BOOT) {
5450                 if ((phba->get_boot > 0) && (!phba->boot_kset)) {
5451                         phba->get_boot--;
5452                         if (!(phba->get_boot % BE_GET_BOOT_TO))
5453                                 be_check_boot_session(phba);
5454                 } else {
5455                         phba->state &= ~BE_ADAPTER_CHECK_BOOT;
5456                         phba->get_boot = 0;
5457                 }
5458         }
5459
5460         beiscsi_ue_detect(phba);
5461
5462         schedule_delayed_work(&phba->beiscsi_hw_check_task,
5463                               msecs_to_jiffies(1000));
5464 }
5465
5466
5467 static pci_ers_result_t beiscsi_eeh_err_detected(struct pci_dev *pdev,
5468                 pci_channel_state_t state)
5469 {
5470         struct beiscsi_hba *phba = NULL;
5471
5472         phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5473         phba->state |= BE_ADAPTER_PCI_ERR;
5474
5475         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5476                     "BM_%d : EEH error detected\n");
5477
5478         beiscsi_quiesce(phba, BEISCSI_EEH_UNLOAD);
5479
5480         if (state == pci_channel_io_perm_failure) {
5481                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5482                             "BM_%d : EEH : State PERM Failure");
5483                 return PCI_ERS_RESULT_DISCONNECT;
5484         }
5485
5486         pci_disable_device(pdev);
5487
5488         /* The error could cause the FW to trigger a flash debug dump.
5489          * Resetting the card while flash dump is in progress
5490          * can cause it not to recover; wait for it to finish.
5491          * Wait only for first function as it is needed only once per
5492          * adapter.
5493          **/
5494         if (pdev->devfn == 0)
5495                 ssleep(30);
5496
5497         return PCI_ERS_RESULT_NEED_RESET;
5498 }
5499
5500 static pci_ers_result_t beiscsi_eeh_reset(struct pci_dev *pdev)
5501 {
5502         struct beiscsi_hba *phba = NULL;
5503         int status = 0;
5504
5505         phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5506
5507         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5508                     "BM_%d : EEH Reset\n");
5509
5510         status = pci_enable_device(pdev);
5511         if (status)
5512                 return PCI_ERS_RESULT_DISCONNECT;
5513
5514         pci_set_master(pdev);
5515         pci_set_power_state(pdev, PCI_D0);
5516         pci_restore_state(pdev);
5517
5518         /* Wait for the CHIP Reset to complete */
5519         status = be_chk_reset_complete(phba);
5520         if (!status) {
5521                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5522                             "BM_%d : EEH Reset Completed\n");
5523         } else {
5524                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5525                             "BM_%d : EEH Reset Completion Failure\n");
5526                 return PCI_ERS_RESULT_DISCONNECT;
5527         }
5528
5529         pci_cleanup_aer_uncorrect_error_status(pdev);
5530         return PCI_ERS_RESULT_RECOVERED;
5531 }
5532
5533 static void beiscsi_eeh_resume(struct pci_dev *pdev)
5534 {
5535         int ret = 0, i;
5536         struct be_eq_obj *pbe_eq;
5537         struct beiscsi_hba *phba = NULL;
5538         struct hwi_controller *phwi_ctrlr;
5539         struct hwi_context_memory *phwi_context;
5540
5541         phba = (struct beiscsi_hba *)pci_get_drvdata(pdev);
5542         pci_save_state(pdev);
5543
5544         if (enable_msix)
5545                 find_num_cpus(phba);
5546         else
5547                 phba->num_cpus = 1;
5548
5549         if (enable_msix) {
5550                 beiscsi_msix_enable(phba);
5551                 if (!phba->msix_enabled)
5552                         phba->num_cpus = 1;
5553         }
5554
5555         ret = beiscsi_cmd_reset_function(phba);
5556         if (ret) {
5557                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5558                             "BM_%d : Reset Failed\n");
5559                 goto ret_err;
5560         }
5561
5562         ret = be_chk_reset_complete(phba);
5563         if (ret) {
5564                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5565                             "BM_%d : Failed to get out of reset.\n");
5566                 goto ret_err;
5567         }
5568
5569         beiscsi_get_params(phba);
5570         phba->shost->max_id = phba->params.cxns_per_ctrl;
5571         phba->shost->can_queue = phba->params.ios_per_ctrl;
5572         ret = hwi_init_controller(phba);
5573         if (ret) {
5574                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5575                             "BM_%d : beiscsi_eeh_resume -"
5576                              "Failed to initialize beiscsi_hba.\n");
5577                 goto ret_err;
5578         }
5579
5580         for (i = 0; i < MAX_MCC_CMD; i++) {
5581                 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
5582                 phba->ctrl.mcc_tag[i] = i + 1;
5583                 phba->ctrl.mcc_tag_status[i + 1] = 0;
5584                 phba->ctrl.mcc_tag_available++;
5585         }
5586
5587         phwi_ctrlr = phba->phwi_ctrlr;
5588         phwi_context = phwi_ctrlr->phwi_ctxt;
5589
5590         for (i = 0; i < phba->num_cpus; i++) {
5591                 pbe_eq = &phwi_context->be_eq[i];
5592                 irq_poll_init(&pbe_eq->iopoll, be_iopoll_budget,
5593                                 be_iopoll);
5594         }
5595
5596         i = (phba->msix_enabled) ? i : 0;
5597         /* Work item for MCC handling */
5598         pbe_eq = &phwi_context->be_eq[i];
5599         INIT_WORK(&pbe_eq->work_cqs, beiscsi_process_all_cqs);
5600
5601         ret = beiscsi_init_irqs(phba);
5602         if (ret < 0) {
5603                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5604                             "BM_%d : beiscsi_eeh_resume - "
5605                             "Failed to beiscsi_init_irqs\n");
5606                 goto ret_err;
5607         }
5608
5609         hwi_enable_intr(phba);
5610         phba->state &= ~BE_ADAPTER_PCI_ERR;
5611
5612         return;
5613 ret_err:
5614         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5615                     "BM_%d : AER EEH Resume Failed\n");
5616 }
5617
5618 static int beiscsi_dev_probe(struct pci_dev *pcidev,
5619                              const struct pci_device_id *id)
5620 {
5621         struct beiscsi_hba *phba = NULL;
5622         struct hwi_controller *phwi_ctrlr;
5623         struct hwi_context_memory *phwi_context;
5624         struct be_eq_obj *pbe_eq;
5625         int ret = 0, i;
5626
5627         ret = beiscsi_enable_pci(pcidev);
5628         if (ret < 0) {
5629                 dev_err(&pcidev->dev,
5630                         "beiscsi_dev_probe - Failed to enable pci device\n");
5631                 return ret;
5632         }
5633
5634         phba = beiscsi_hba_alloc(pcidev);
5635         if (!phba) {
5636                 dev_err(&pcidev->dev,
5637                         "beiscsi_dev_probe - Failed in beiscsi_hba_alloc\n");
5638                 goto disable_pci;
5639         }
5640
5641         /* Enable EEH reporting */
5642         ret = pci_enable_pcie_error_reporting(pcidev);
5643         if (ret)
5644                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
5645                             "BM_%d : PCIe Error Reporting "
5646                             "Enabling Failed\n");
5647
5648         pci_save_state(pcidev);
5649
5650         /* Initialize Driver configuration Paramters */
5651         beiscsi_hba_attrs_init(phba);
5652
5653         phba->fw_timeout = false;
5654         phba->mac_addr_set = false;
5655
5656
5657         switch (pcidev->device) {
5658         case BE_DEVICE_ID1:
5659         case OC_DEVICE_ID1:
5660         case OC_DEVICE_ID2:
5661                 phba->generation = BE_GEN2;
5662                 phba->iotask_fn = beiscsi_iotask;
5663                 break;
5664         case BE_DEVICE_ID2:
5665         case OC_DEVICE_ID3:
5666                 phba->generation = BE_GEN3;
5667                 phba->iotask_fn = beiscsi_iotask;
5668                 break;
5669         case OC_SKH_ID1:
5670                 phba->generation = BE_GEN4;
5671                 phba->iotask_fn = beiscsi_iotask_v2;
5672                 break;
5673         default:
5674                 phba->generation = 0;
5675         }
5676
5677         ret = be_ctrl_init(phba, pcidev);
5678         if (ret) {
5679                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5680                             "BM_%d : beiscsi_dev_probe-"
5681                             "Failed in be_ctrl_init\n");
5682                 goto hba_free;
5683         }
5684
5685         /*
5686          * FUNCTION_RESET should clean up any stale info in FW for this fn
5687          */
5688         ret = beiscsi_cmd_reset_function(phba);
5689         if (ret) {
5690                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5691                             "BM_%d : Reset Failed\n");
5692                 goto hba_free;
5693         }
5694         ret = be_chk_reset_complete(phba);
5695         if (ret) {
5696                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5697                             "BM_%d : Failed to get out of reset.\n");
5698                 goto hba_free;
5699         }
5700
5701         spin_lock_init(&phba->io_sgl_lock);
5702         spin_lock_init(&phba->mgmt_sgl_lock);
5703         spin_lock_init(&phba->isr_lock);
5704         spin_lock_init(&phba->async_pdu_lock);
5705         ret = mgmt_get_fw_config(&phba->ctrl, phba);
5706         if (ret != 0) {
5707                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5708                             "BM_%d : Error getting fw config\n");
5709                 goto free_port;
5710         }
5711         mgmt_get_port_name(&phba->ctrl, phba);
5712         beiscsi_get_params(phba);
5713
5714         if (enable_msix)
5715                 find_num_cpus(phba);
5716         else
5717                 phba->num_cpus = 1;
5718
5719         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
5720                     "BM_%d : num_cpus = %d\n",
5721                     phba->num_cpus);
5722
5723         if (enable_msix) {
5724                 beiscsi_msix_enable(phba);
5725                 if (!phba->msix_enabled)
5726                         phba->num_cpus = 1;
5727         }
5728
5729         phba->shost->max_id = phba->params.cxns_per_ctrl;
5730         phba->shost->can_queue = phba->params.ios_per_ctrl;
5731         ret = beiscsi_init_port(phba);
5732         if (ret < 0) {
5733                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5734                             "BM_%d : beiscsi_dev_probe-"
5735                             "Failed in beiscsi_init_port\n");
5736                 goto free_port;
5737         }
5738
5739         for (i = 0; i < MAX_MCC_CMD; i++) {
5740                 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]);
5741                 phba->ctrl.mcc_tag[i] = i + 1;
5742                 phba->ctrl.mcc_tag_status[i + 1] = 0;
5743                 phba->ctrl.mcc_tag_available++;
5744                 memset(&phba->ctrl.ptag_state[i].tag_mem_state, 0,
5745                        sizeof(struct be_dma_mem));
5746         }
5747
5748         phba->ctrl.mcc_alloc_index = phba->ctrl.mcc_free_index = 0;
5749
5750         snprintf(phba->wq_name, sizeof(phba->wq_name), "beiscsi_%02x_wq",
5751                  phba->shost->host_no);
5752         phba->wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 1, phba->wq_name);
5753         if (!phba->wq) {
5754                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5755                             "BM_%d : beiscsi_dev_probe-"
5756                             "Failed to allocate work queue\n");
5757                 goto free_twq;
5758         }
5759
5760         INIT_DELAYED_WORK(&phba->beiscsi_hw_check_task,
5761                           beiscsi_hw_health_check);
5762
5763         phwi_ctrlr = phba->phwi_ctrlr;
5764         phwi_context = phwi_ctrlr->phwi_ctxt;
5765
5766         for (i = 0; i < phba->num_cpus; i++) {
5767                 pbe_eq = &phwi_context->be_eq[i];
5768                 irq_poll_init(&pbe_eq->iopoll, be_iopoll_budget,
5769                                 be_iopoll);
5770         }
5771
5772         i = (phba->msix_enabled) ? i : 0;
5773         /* Work item for MCC handling */
5774         pbe_eq = &phwi_context->be_eq[i];
5775         INIT_WORK(&pbe_eq->work_cqs, beiscsi_process_all_cqs);
5776
5777         ret = beiscsi_init_irqs(phba);
5778         if (ret < 0) {
5779                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5780                             "BM_%d : beiscsi_dev_probe-"
5781                             "Failed to beiscsi_init_irqs\n");
5782                 goto free_blkenbld;
5783         }
5784         hwi_enable_intr(phba);
5785
5786         if (iscsi_host_add(phba->shost, &phba->pcidev->dev))
5787                 goto free_blkenbld;
5788
5789         if (beiscsi_setup_boot_info(phba))
5790                 /*
5791                  * log error but continue, because we may not be using
5792                  * iscsi boot.
5793                  */
5794                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
5795                             "BM_%d : Could not set up "
5796                             "iSCSI boot info.\n");
5797
5798         beiscsi_create_def_ifaces(phba);
5799         schedule_delayed_work(&phba->beiscsi_hw_check_task,
5800                               msecs_to_jiffies(1000));
5801
5802         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
5803                     "\n\n\n BM_%d : SUCCESS - DRIVER LOADED\n\n\n");
5804         return 0;
5805
5806 free_blkenbld:
5807         destroy_workqueue(phba->wq);
5808         for (i = 0; i < phba->num_cpus; i++) {
5809                 pbe_eq = &phwi_context->be_eq[i];
5810                 irq_poll_disable(&pbe_eq->iopoll);
5811         }
5812 free_twq:
5813         beiscsi_clean_port(phba);
5814         beiscsi_free_mem(phba);
5815 free_port:
5816         pci_free_consistent(phba->pcidev,
5817                             phba->ctrl.mbox_mem_alloced.size,
5818                             phba->ctrl.mbox_mem_alloced.va,
5819                            phba->ctrl.mbox_mem_alloced.dma);
5820         beiscsi_unmap_pci_function(phba);
5821 hba_free:
5822         if (phba->msix_enabled)
5823                 pci_disable_msix(phba->pcidev);
5824         pci_dev_put(phba->pcidev);
5825         iscsi_host_free(phba->shost);
5826         pci_set_drvdata(pcidev, NULL);
5827 disable_pci:
5828         pci_release_regions(pcidev);
5829         pci_disable_device(pcidev);
5830         return ret;
5831 }
5832
5833 static struct pci_error_handlers beiscsi_eeh_handlers = {
5834         .error_detected = beiscsi_eeh_err_detected,
5835         .slot_reset = beiscsi_eeh_reset,
5836         .resume = beiscsi_eeh_resume,
5837 };
5838
5839 struct iscsi_transport beiscsi_iscsi_transport = {
5840         .owner = THIS_MODULE,
5841         .name = DRV_NAME,
5842         .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_TEXT_NEGO |
5843                 CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD,
5844         .create_session = beiscsi_session_create,
5845         .destroy_session = beiscsi_session_destroy,
5846         .create_conn = beiscsi_conn_create,
5847         .bind_conn = beiscsi_conn_bind,
5848         .destroy_conn = iscsi_conn_teardown,
5849         .attr_is_visible = be2iscsi_attr_is_visible,
5850         .set_iface_param = be2iscsi_iface_set_param,
5851         .get_iface_param = be2iscsi_iface_get_param,
5852         .set_param = beiscsi_set_param,
5853         .get_conn_param = iscsi_conn_get_param,
5854         .get_session_param = iscsi_session_get_param,
5855         .get_host_param = beiscsi_get_host_param,
5856         .start_conn = beiscsi_conn_start,
5857         .stop_conn = iscsi_conn_stop,
5858         .send_pdu = iscsi_conn_send_pdu,
5859         .xmit_task = beiscsi_task_xmit,
5860         .cleanup_task = beiscsi_cleanup_task,
5861         .alloc_pdu = beiscsi_alloc_pdu,
5862         .parse_pdu_itt = beiscsi_parse_pdu,
5863         .get_stats = beiscsi_conn_get_stats,
5864         .get_ep_param = beiscsi_ep_get_param,
5865         .ep_connect = beiscsi_ep_connect,
5866         .ep_poll = beiscsi_ep_poll,
5867         .ep_disconnect = beiscsi_ep_disconnect,
5868         .session_recovery_timedout = iscsi_session_recovery_timedout,
5869         .bsg_request = beiscsi_bsg_request,
5870 };
5871
5872 static struct pci_driver beiscsi_pci_driver = {
5873         .name = DRV_NAME,
5874         .probe = beiscsi_dev_probe,
5875         .remove = beiscsi_remove,
5876         .id_table = beiscsi_pci_id_table,
5877         .err_handler = &beiscsi_eeh_handlers
5878 };
5879
5880
5881 static int __init beiscsi_module_init(void)
5882 {
5883         int ret;
5884
5885         beiscsi_scsi_transport =
5886                         iscsi_register_transport(&beiscsi_iscsi_transport);
5887         if (!beiscsi_scsi_transport) {
5888                 printk(KERN_ERR
5889                        "beiscsi_module_init - Unable to  register beiscsi transport.\n");
5890                 return -ENOMEM;
5891         }
5892         printk(KERN_INFO "In beiscsi_module_init, tt=%p\n",
5893                &beiscsi_iscsi_transport);
5894
5895         ret = pci_register_driver(&beiscsi_pci_driver);
5896         if (ret) {
5897                 printk(KERN_ERR
5898                        "beiscsi_module_init - Unable to  register beiscsi pci driver.\n");
5899                 goto unregister_iscsi_transport;
5900         }
5901         return 0;
5902
5903 unregister_iscsi_transport:
5904         iscsi_unregister_transport(&beiscsi_iscsi_transport);
5905         return ret;
5906 }
5907
5908 static void __exit beiscsi_module_exit(void)
5909 {
5910         pci_unregister_driver(&beiscsi_pci_driver);
5911         iscsi_unregister_transport(&beiscsi_iscsi_transport);
5912 }
5913
5914 module_init(beiscsi_module_init);
5915 module_exit(beiscsi_module_exit);