drivers/scsi/bfa/bfad.c

   1 /*
   2  * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
   3  * All rights reserved
   4  * www.brocade.com
   5  *
   6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License (GPL) Version 2 as
  10  * published by the Free Software Foundation
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  */
  17
  18 /*
  19  *  bfad.c Linux driver PCI interface module.
  20  */
  21 #include <linux/module.h>
  22 #include <linux/kthread.h>
  23 #include <linux/errno.h>
  24 #include <linux/sched.h>
  25 #include <linux/init.h>
  26 #include <linux/fs.h>
  27 #include <linux/pci.h>
  28 #include <linux/firmware.h>
  29 #include <asm/uaccess.h>
  30 #include <asm/fcntl.h>
  31
  32 #include "bfad_drv.h"
  33 #include "bfad_im.h"
  34 #include "bfa_fcs.h"
  35 #include "bfa_defs.h"
  36 #include "bfa.h"
  37
  38 BFA_TRC_FILE(LDRV, BFAD);
  39 DEFINE_MUTEX(bfad_mutex);
  40 LIST_HEAD(bfad_list);
  41
  42 static int      bfad_inst;
  43 static int      num_sgpgs_parm;
  44 int             supported_fc4s;
  45 char            *host_name, *os_name, *os_patch;
  46 int             num_rports, num_ios, num_tms;
  47 int             num_fcxps, num_ufbufs;
  48 int             reqq_size, rspq_size, num_sgpgs;
  49 int             rport_del_timeout = BFA_FCS_RPORT_DEF_DEL_TIMEOUT;
  50 int             bfa_lun_queue_depth = BFAD_LUN_QUEUE_DEPTH;
  51 int             bfa_io_max_sge = BFAD_IO_MAX_SGE;
  52 int             bfa_log_level = 3; /* WARNING log level */
  53 int             ioc_auto_recover = BFA_TRUE;
  54 int             bfa_linkup_delay = -1;
  55 int             fdmi_enable = BFA_TRUE;
  56 int             pcie_max_read_reqsz;
  57 int             bfa_debugfs_enable = 1;
  58 int             msix_disable_cb = 0, msix_disable_ct = 0;
  59
  60 /* Firmware releated */
  61 u32     bfi_image_ct_fc_size, bfi_image_ct_cna_size, bfi_image_cb_fc_size;
  62 u32     *bfi_image_ct_fc, *bfi_image_ct_cna, *bfi_image_cb_fc;
  63
  64 #define BFAD_FW_FILE_CT_FC      "ctfw_fc.bin"
  65 #define BFAD_FW_FILE_CT_CNA     "ctfw_cna.bin"
  66 #define BFAD_FW_FILE_CB_FC      "cbfw_fc.bin"
  67
  68 static u32 *bfad_load_fwimg(struct pci_dev *pdev);
  69 static void bfad_free_fwimg(void);
  70 static void bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
  71                 u32 *bfi_image_size, char *fw_name);
  72
  73 static const char *msix_name_ct[] = {
  74         "cpe0", "cpe1", "cpe2", "cpe3",
  75         "rme0", "rme1", "rme2", "rme3",
  76         "ctrl" };
  77
  78 static const char *msix_name_cb[] = {
  79         "cpe0", "cpe1", "cpe2", "cpe3",
  80         "rme0", "rme1", "rme2", "rme3",
  81         "eemc", "elpu0", "elpu1", "epss", "mlpu" };
  82
  83 MODULE_FIRMWARE(BFAD_FW_FILE_CT_FC);
  84 MODULE_FIRMWARE(BFAD_FW_FILE_CT_CNA);
  85 MODULE_FIRMWARE(BFAD_FW_FILE_CB_FC);
  86
  87 module_param(os_name, charp, S_IRUGO | S_IWUSR);
  88 MODULE_PARM_DESC(os_name, "OS name of the hba host machine");
  89 module_param(os_patch, charp, S_IRUGO | S_IWUSR);
  90 MODULE_PARM_DESC(os_patch, "OS patch level of the hba host machine");
  91 module_param(host_name, charp, S_IRUGO | S_IWUSR);
  92 MODULE_PARM_DESC(host_name, "Hostname of the hba host machine");
  93 module_param(num_rports, int, S_IRUGO | S_IWUSR);
  94 MODULE_PARM_DESC(num_rports, "Max number of rports supported per port "
  95                                 "(physical/logical), default=1024");
  96 module_param(num_ios, int, S_IRUGO | S_IWUSR);
  97 MODULE_PARM_DESC(num_ios, "Max number of ioim requests, default=2000");
  98 module_param(num_tms, int, S_IRUGO | S_IWUSR);
  99 MODULE_PARM_DESC(num_tms, "Max number of task im requests, default=128");
 100 module_param(num_fcxps, int, S_IRUGO | S_IWUSR);
 101 MODULE_PARM_DESC(num_fcxps, "Max number of fcxp requests, default=64");
 102 module_param(num_ufbufs, int, S_IRUGO | S_IWUSR);
 103 MODULE_PARM_DESC(num_ufbufs, "Max number of unsolicited frame "
 104                                 "buffers, default=64");
 105 module_param(reqq_size, int, S_IRUGO | S_IWUSR);
 106 MODULE_PARM_DESC(reqq_size, "Max number of request queue elements, "
 107                                 "default=256");
 108 module_param(rspq_size, int, S_IRUGO | S_IWUSR);
 109 MODULE_PARM_DESC(rspq_size, "Max number of response queue elements, "
 110                                 "default=64");
 111 module_param(num_sgpgs, int, S_IRUGO | S_IWUSR);
 112 MODULE_PARM_DESC(num_sgpgs, "Number of scatter/gather pages, default=2048");
 113 module_param(rport_del_timeout, int, S_IRUGO | S_IWUSR);
 114 MODULE_PARM_DESC(rport_del_timeout, "Rport delete timeout, default=90 secs, "
 115                                         "Range[>0]");
 116 module_param(bfa_lun_queue_depth, int, S_IRUGO | S_IWUSR);
 117 MODULE_PARM_DESC(bfa_lun_queue_depth, "Lun queue depth, default=32, Range[>0]");
 118 module_param(bfa_io_max_sge, int, S_IRUGO | S_IWUSR);
 119 MODULE_PARM_DESC(bfa_io_max_sge, "Max io scatter/gather elements, default=255");
 120 module_param(bfa_log_level, int, S_IRUGO | S_IWUSR);
 121 MODULE_PARM_DESC(bfa_log_level, "Driver log level, default=3, "
 122                                 "Range[Critical:1|Error:2|Warning:3|Info:4]");
 123 module_param(ioc_auto_recover, int, S_IRUGO | S_IWUSR);
 124 MODULE_PARM_DESC(ioc_auto_recover, "IOC auto recovery, default=1, "
 125                                 "Range[off:0|on:1]");
 126 module_param(bfa_linkup_delay, int, S_IRUGO | S_IWUSR);
 127 MODULE_PARM_DESC(bfa_linkup_delay, "Link up delay, default=30 secs for "
 128                         "boot port. Otherwise 10 secs in RHEL4 & 0 for "
 129                         "[RHEL5, SLES10, ESX40] Range[>0]");
 130 module_param(msix_disable_cb, int, S_IRUGO | S_IWUSR);
 131 MODULE_PARM_DESC(msix_disable_cb, "Disable Message Signaled Interrupts "
 132                         "for Brocade-415/425/815/825 cards, default=0, "
 133                         " Range[false:0|true:1]");
 134 module_param(msix_disable_ct, int, S_IRUGO | S_IWUSR);
 135 MODULE_PARM_DESC(msix_disable_ct, "Disable Message Signaled Interrupts "
 136                         "if possible for Brocade-1010/1020/804/1007/902/1741 "
 137                         "cards, default=0, Range[false:0|true:1]");
 138 module_param(fdmi_enable, int, S_IRUGO | S_IWUSR);
 139 MODULE_PARM_DESC(fdmi_enable, "Enables fdmi registration, default=1, "
 140                                 "Range[false:0|true:1]");
 141 module_param(pcie_max_read_reqsz, int, S_IRUGO | S_IWUSR);
 142 MODULE_PARM_DESC(pcie_max_read_reqsz, "PCIe max read request size, default=0 "
 143                 "(use system setting), Range[128|256|512|1024|2048|4096]");
 144 module_param(bfa_debugfs_enable, int, S_IRUGO | S_IWUSR);
 145 MODULE_PARM_DESC(bfa_debugfs_enable, "Enables debugfs feature, default=1,"
 146                 " Range[false:0|true:1]");
 147
 148 static void
 149 bfad_sm_uninit(struct bfad_s *bfad, enum bfad_sm_event event);
 150 static void
 151 bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event);
 152 static void
 153 bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event);
 154 static void
 155 bfad_sm_operational(struct bfad_s *bfad, enum bfad_sm_event event);
 156 static void
 157 bfad_sm_stopping(struct bfad_s *bfad, enum bfad_sm_event event);
 158 static void
 159 bfad_sm_failed(struct bfad_s *bfad, enum bfad_sm_event event);
 160 static void
 161 bfad_sm_fcs_exit(struct bfad_s *bfad, enum bfad_sm_event event);
 162
 163 /*
 164  * Beginning state for the driver instance, awaiting the pci_probe event
 165  */
 166 static void
 167 bfad_sm_uninit(struct bfad_s *bfad, enum bfad_sm_event event)
 168 {
 169         bfa_trc(bfad, event);
 170
 171         switch (event) {
 172         case BFAD_E_CREATE:
 173                 bfa_sm_set_state(bfad, bfad_sm_created);
 174                 bfad->bfad_tsk = kthread_create(bfad_worker, (void *) bfad,
 175                                                 "%s", "bfad_worker");
 176                 if (IS_ERR(bfad->bfad_tsk)) {
 177                         printk(KERN_INFO "bfad[%d]: Kernel thread "
 178                                 "creation failed!\n", bfad->inst_no);
 179                         bfa_sm_send_event(bfad, BFAD_E_KTHREAD_CREATE_FAILED);
 180                 }
 181                 bfa_sm_send_event(bfad, BFAD_E_INIT);
 182                 break;
 183
 184         case BFAD_E_STOP:
 185                 /* Ignore stop; already in uninit */
 186                 break;
 187
 188         default:
 189                 bfa_sm_fault(bfad, event);
 190         }
 191 }
 192
 193 /*
 194  * Driver Instance is created, awaiting event INIT to initialize the bfad
 195  */
 196 static void
 197 bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event)
 198 {
 199         unsigned long flags;
 200
 201         bfa_trc(bfad, event);
 202
 203         switch (event) {
 204         case BFAD_E_INIT:
 205                 bfa_sm_set_state(bfad, bfad_sm_initializing);
 206
 207                 init_completion(&bfad->comp);
 208
 209                 /* Enable Interrupt and wait bfa_init completion */
 210                 if (bfad_setup_intr(bfad)) {
 211                         printk(KERN_WARNING "bfad%d: bfad_setup_intr failed\n",
 212                                         bfad->inst_no);
 213                         bfa_sm_send_event(bfad, BFAD_E_INTR_INIT_FAILED);
 214                         break;
 215                 }
 216
 217                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 218                 bfa_iocfc_init(&bfad->bfa);
 219                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 220
 221                 /* Set up interrupt handler for each vectors */
 222                 if ((bfad->bfad_flags & BFAD_MSIX_ON) &&
 223                         bfad_install_msix_handler(bfad)) {
 224                         printk(KERN_WARNING "%s: install_msix failed, bfad%d\n",
 225                                 __func__, bfad->inst_no);
 226                 }
 227
 228                 bfad_init_timer(bfad);
 229
 230                 wait_for_completion(&bfad->comp);
 231
 232                 if ((bfad->bfad_flags & BFAD_HAL_INIT_DONE)) {
 233                         bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
 234                 } else {
 235                         printk(KERN_WARNING
 236                                 "bfa %s: bfa init failed\n",
 237                                 bfad->pci_name);
 238                         bfad->bfad_flags |= BFAD_HAL_INIT_FAIL;
 239                         bfa_sm_send_event(bfad, BFAD_E_INIT_FAILED);
 240                 }
 241
 242                 break;
 243
 244         case BFAD_E_KTHREAD_CREATE_FAILED:
 245                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 246                 break;
 247
 248         default:
 249                 bfa_sm_fault(bfad, event);
 250         }
 251 }
 252
 253 static void
 254 bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event)
 255 {
 256         int     retval;
 257         unsigned long   flags;
 258
 259         bfa_trc(bfad, event);
 260
 261         switch (event) {
 262         case BFAD_E_INIT_SUCCESS:
 263                 kthread_stop(bfad->bfad_tsk);
 264                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 265                 bfad->bfad_tsk = NULL;
 266                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 267
 268                 retval = bfad_start_ops(bfad);
 269                 if (retval != BFA_STATUS_OK)
 270                         break;
 271                 bfa_sm_set_state(bfad, bfad_sm_operational);
 272                 break;
 273
 274         case BFAD_E_INTR_INIT_FAILED:
 275                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 276                 kthread_stop(bfad->bfad_tsk);
 277                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 278                 bfad->bfad_tsk = NULL;
 279                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 280                 break;
 281
 282         case BFAD_E_INIT_FAILED:
 283                 bfa_sm_set_state(bfad, bfad_sm_failed);
 284                 break;
 285         default:
 286                 bfa_sm_fault(bfad, event);
 287         }
 288 }
 289
 290 static void
 291 bfad_sm_failed(struct bfad_s *bfad, enum bfad_sm_event event)
 292 {
 293         int     retval;
 294
 295         bfa_trc(bfad, event);
 296
 297         switch (event) {
 298         case BFAD_E_INIT_SUCCESS:
 299                 retval = bfad_start_ops(bfad);
 300                 if (retval != BFA_STATUS_OK)
 301                         break;
 302                 bfa_sm_set_state(bfad, bfad_sm_operational);
 303                 break;
 304
 305         case BFAD_E_STOP:
 306                 if (bfad->bfad_flags & BFAD_CFG_PPORT_DONE)
 307                         bfad_uncfg_pport(bfad);
 308                 if (bfad->bfad_flags & BFAD_FC4_PROBE_DONE) {
 309                         bfad_im_probe_undo(bfad);
 310                         bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
 311                 }
 312                 bfad_stop(bfad);
 313                 break;
 314
 315         case BFAD_E_EXIT_COMP:
 316                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 317                 bfad_remove_intr(bfad);
 318                 del_timer_sync(&bfad->hal_tmo);
 319                 break;
 320
 321         default:
 322                 bfa_sm_fault(bfad, event);
 323         }
 324 }
 325
 326 static void
 327 bfad_sm_operational(struct bfad_s *bfad, enum bfad_sm_event event)
 328 {
 329         bfa_trc(bfad, event);
 330
 331         switch (event) {
 332         case BFAD_E_STOP:
 333                 bfa_sm_set_state(bfad, bfad_sm_fcs_exit);
 334                 bfad_fcs_stop(bfad);
 335                 break;
 336
 337         default:
 338                 bfa_sm_fault(bfad, event);
 339         }
 340 }
 341
 342 static void
 343 bfad_sm_fcs_exit(struct bfad_s *bfad, enum bfad_sm_event event)
 344 {
 345         bfa_trc(bfad, event);
 346
 347         switch (event) {
 348         case BFAD_E_FCS_EXIT_COMP:
 349                 bfa_sm_set_state(bfad, bfad_sm_stopping);
 350                 bfad_stop(bfad);
 351                 break;
 352
 353         default:
 354                 bfa_sm_fault(bfad, event);
 355         }
 356 }
 357
 358 static void
 359 bfad_sm_stopping(struct bfad_s *bfad, enum bfad_sm_event event)
 360 {
 361         bfa_trc(bfad, event);
 362
 363         switch (event) {
 364         case BFAD_E_EXIT_COMP:
 365                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 366                 bfad_remove_intr(bfad);
 367                 del_timer_sync(&bfad->hal_tmo);
 368                 bfad_im_probe_undo(bfad);
 369                 bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
 370                 bfad_uncfg_pport(bfad);
 371                 break;
 372
 373         default:
 374                 bfa_sm_fault(bfad, event);
 375                 break;
 376         }
 377 }
 378
 379 /*
 380  *  BFA callbacks
 381  */
 382 void
 383 bfad_hcb_comp(void *arg, bfa_status_t status)
 384 {
 385         struct bfad_hal_comp *fcomp = (struct bfad_hal_comp *)arg;
 386
 387         fcomp->status = status;
 388         complete(&fcomp->comp);
 389 }
 390
 391 /*
 392  * bfa_init callback
 393  */
 394 void
 395 bfa_cb_init(void *drv, bfa_status_t init_status)
 396 {
 397         struct bfad_s         *bfad = drv;
 398
 399         if (init_status == BFA_STATUS_OK) {
 400                 bfad->bfad_flags |= BFAD_HAL_INIT_DONE;
 401
 402                 /*
 403                  * If BFAD_HAL_INIT_FAIL flag is set:
 404                  * Wake up the kernel thread to start
 405                  * the bfad operations after HAL init done
 406                  */
 407                 if ((bfad->bfad_flags & BFAD_HAL_INIT_FAIL)) {
 408                         bfad->bfad_flags &= ~BFAD_HAL_INIT_FAIL;
 409                         wake_up_process(bfad->bfad_tsk);
 410                 }
 411         }
 412
 413         complete(&bfad->comp);
 414 }
 415
 416 /*
 417  *  BFA_FCS callbacks
 418  */
 419 struct bfad_port_s *
 420 bfa_fcb_lport_new(struct bfad_s *bfad, struct bfa_fcs_lport_s *port,
 421                  enum bfa_lport_role roles, struct bfad_vf_s *vf_drv,
 422                  struct bfad_vport_s *vp_drv)
 423 {
 424         bfa_status_t    rc;
 425         struct bfad_port_s    *port_drv;
 426
 427         if (!vp_drv && !vf_drv) {
 428                 port_drv = &bfad->pport;
 429                 port_drv->pvb_type = BFAD_PORT_PHYS_BASE;
 430         } else if (!vp_drv && vf_drv) {
 431                 port_drv = &vf_drv->base_port;
 432                 port_drv->pvb_type = BFAD_PORT_VF_BASE;
 433         } else if (vp_drv && !vf_drv) {
 434                 port_drv = &vp_drv->drv_port;
 435                 port_drv->pvb_type = BFAD_PORT_PHYS_VPORT;
 436         } else {
 437                 port_drv = &vp_drv->drv_port;
 438                 port_drv->pvb_type = BFAD_PORT_VF_VPORT;
 439         }
 440
 441         port_drv->fcs_port = port;
 442         port_drv->roles = roles;
 443
 444         if (roles & BFA_LPORT_ROLE_FCP_IM) {
 445                 rc = bfad_im_port_new(bfad, port_drv);
 446                 if (rc != BFA_STATUS_OK) {
 447                         bfad_im_port_delete(bfad, port_drv);
 448                         port_drv = NULL;
 449                 }
 450         }
 451
 452         return port_drv;
 453 }
 454
 455 void
 456 bfa_fcb_lport_delete(struct bfad_s *bfad, enum bfa_lport_role roles,
 457                     struct bfad_vf_s *vf_drv, struct bfad_vport_s *vp_drv)
 458 {
 459         struct bfad_port_s    *port_drv;
 460
 461         /* this will be only called from rmmod context */
 462         if (vp_drv && !vp_drv->comp_del) {
 463                 port_drv = (vp_drv) ? (&(vp_drv)->drv_port) :
 464                                 ((vf_drv) ? (&(vf_drv)->base_port) :
 465                                 (&(bfad)->pport));
 466                 bfa_trc(bfad, roles);
 467                 if (roles & BFA_LPORT_ROLE_FCP_IM)
 468                         bfad_im_port_delete(bfad, port_drv);
 469         }
 470 }
 471
 472 /*
 473  * FCS RPORT alloc callback, after successful PLOGI by FCS
 474  */
 475 bfa_status_t
 476 bfa_fcb_rport_alloc(struct bfad_s *bfad, struct bfa_fcs_rport_s **rport,
 477                     struct bfad_rport_s **rport_drv)
 478 {
 479         bfa_status_t    rc = BFA_STATUS_OK;
 480
 481         *rport_drv = kzalloc(sizeof(struct bfad_rport_s), GFP_ATOMIC);
 482         if (*rport_drv == NULL) {
 483                 rc = BFA_STATUS_ENOMEM;
 484                 goto ext;
 485         }
 486
 487         *rport = &(*rport_drv)->fcs_rport;
 488
 489 ext:
 490         return rc;
 491 }
 492
 493 /*
 494  * FCS PBC VPORT Create
 495  */
 496 void
 497 bfa_fcb_pbc_vport_create(struct bfad_s *bfad, struct bfi_pbc_vport_s pbc_vport)
 498 {
 499
 500         struct bfa_lport_cfg_s port_cfg = {0};
 501         struct bfad_vport_s   *vport;
 502         int rc;
 503
 504         vport = kzalloc(sizeof(struct bfad_vport_s), GFP_KERNEL);
 505         if (!vport) {
 506                 bfa_trc(bfad, 0);
 507                 return;
 508         }
 509
 510         vport->drv_port.bfad = bfad;
 511         port_cfg.roles = BFA_LPORT_ROLE_FCP_IM;
 512         port_cfg.pwwn = pbc_vport.vp_pwwn;
 513         port_cfg.nwwn = pbc_vport.vp_nwwn;
 514         port_cfg.preboot_vp  = BFA_TRUE;
 515
 516         rc = bfa_fcs_pbc_vport_create(&vport->fcs_vport, &bfad->bfa_fcs, 0,
 517                                   &port_cfg, vport);
 518
 519         if (rc != BFA_STATUS_OK) {
 520                 bfa_trc(bfad, 0);
 521                 return;
 522         }
 523
 524         list_add_tail(&vport->list_entry, &bfad->pbc_vport_list);
 525 }
 526
 527 void
 528 bfad_hal_mem_release(struct bfad_s *bfad)
 529 {
 530         int             i;
 531         struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
 532         struct bfa_mem_elem_s *meminfo_elem;
 533
 534         for (i = 0; i < BFA_MEM_TYPE_MAX; i++) {
 535                 meminfo_elem = &hal_meminfo->meminfo[i];
 536                 if (meminfo_elem->kva != NULL) {
 537                         switch (meminfo_elem->mem_type) {
 538                         case BFA_MEM_TYPE_KVA:
 539                                 vfree(meminfo_elem->kva);
 540                                 break;
 541                         case BFA_MEM_TYPE_DMA:
 542                                 dma_free_coherent(&bfad->pcidev->dev,
 543                                         meminfo_elem->mem_len,
 544                                         meminfo_elem->kva,
 545                                         (dma_addr_t) meminfo_elem->dma);
 546                                 break;
 547                         default:
 548                                 WARN_ON(1);
 549                                 break;
 550                         }
 551                 }
 552         }
 553
 554         memset(hal_meminfo, 0, sizeof(struct bfa_meminfo_s));
 555 }
 556
 557 void
 558 bfad_update_hal_cfg(struct bfa_iocfc_cfg_s *bfa_cfg)
 559 {
 560         if (num_rports > 0)
 561                 bfa_cfg->fwcfg.num_rports = num_rports;
 562         if (num_ios > 0)
 563                 bfa_cfg->fwcfg.num_ioim_reqs = num_ios;
 564         if (num_tms > 0)
 565                 bfa_cfg->fwcfg.num_tskim_reqs = num_tms;
 566         if (num_fcxps > 0)
 567                 bfa_cfg->fwcfg.num_fcxp_reqs = num_fcxps;
 568         if (num_ufbufs > 0)
 569                 bfa_cfg->fwcfg.num_uf_bufs = num_ufbufs;
 570         if (reqq_size > 0)
 571                 bfa_cfg->drvcfg.num_reqq_elems = reqq_size;
 572         if (rspq_size > 0)
 573                 bfa_cfg->drvcfg.num_rspq_elems = rspq_size;
 574         if (num_sgpgs > 0)
 575                 bfa_cfg->drvcfg.num_sgpgs = num_sgpgs;
 576
 577         /*
 578          * populate the hal values back to the driver for sysfs use.
 579          * otherwise, the default values will be shown as 0 in sysfs
 580          */
 581         num_rports = bfa_cfg->fwcfg.num_rports;
 582         num_ios = bfa_cfg->fwcfg.num_ioim_reqs;
 583         num_tms = bfa_cfg->fwcfg.num_tskim_reqs;
 584         num_fcxps = bfa_cfg->fwcfg.num_fcxp_reqs;
 585         num_ufbufs = bfa_cfg->fwcfg.num_uf_bufs;
 586         reqq_size = bfa_cfg->drvcfg.num_reqq_elems;
 587         rspq_size = bfa_cfg->drvcfg.num_rspq_elems;
 588         num_sgpgs = bfa_cfg->drvcfg.num_sgpgs;
 589 }
 590
 591 bfa_status_t
 592 bfad_hal_mem_alloc(struct bfad_s *bfad)
 593 {
 594         int             i;
 595         struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
 596         struct bfa_mem_elem_s *meminfo_elem;
 597         dma_addr_t      phys_addr;
 598         void           *kva;
 599         bfa_status_t    rc = BFA_STATUS_OK;
 600         int retry_count = 0;
 601         int reset_value = 1;
 602         int min_num_sgpgs = 512;
 603
 604         bfa_cfg_get_default(&bfad->ioc_cfg);
 605
 606 retry:
 607         bfad_update_hal_cfg(&bfad->ioc_cfg);
 608         bfad->cfg_data.ioc_queue_depth = bfad->ioc_cfg.fwcfg.num_ioim_reqs;
 609         bfa_cfg_get_meminfo(&bfad->ioc_cfg, hal_meminfo);
 610
 611         for (i = 0; i < BFA_MEM_TYPE_MAX; i++) {
 612                 meminfo_elem = &hal_meminfo->meminfo[i];
 613                 switch (meminfo_elem->mem_type) {
 614                 case BFA_MEM_TYPE_KVA:
 615                         kva = vmalloc(meminfo_elem->mem_len);
 616                         if (kva == NULL) {
 617                                 bfad_hal_mem_release(bfad);
 618                                 rc = BFA_STATUS_ENOMEM;
 619                                 goto ext;
 620                         }
 621                         memset(kva, 0, meminfo_elem->mem_len);
 622                         meminfo_elem->kva = kva;
 623                         break;
 624                 case BFA_MEM_TYPE_DMA:
 625                         kva = dma_alloc_coherent(&bfad->pcidev->dev,
 626                                 meminfo_elem->mem_len, &phys_addr, GFP_KERNEL);
 627                         if (kva == NULL) {
 628                                 bfad_hal_mem_release(bfad);
 629                                 /*
 630                                  * If we cannot allocate with default
 631                                  * num_sgpages try with half the value.
 632                                  */
 633                                 if (num_sgpgs > min_num_sgpgs) {
 634                                         printk(KERN_INFO
 635                                         "bfad[%d]: memory allocation failed"
 636                                         " with num_sgpgs: %d\n",
 637                                                 bfad->inst_no, num_sgpgs);
 638                                         nextLowerInt(&num_sgpgs);
 639                                         printk(KERN_INFO
 640                                         "bfad[%d]: trying to allocate memory"
 641                                         " with num_sgpgs: %d\n",
 642                                                 bfad->inst_no, num_sgpgs);
 643                                         retry_count++;
 644                                         goto retry;
 645                                 } else {
 646                                         if (num_sgpgs_parm > 0)
 647                                                 num_sgpgs = num_sgpgs_parm;
 648                                         else {
 649                                                 reset_value =
 650                                                         (1 << retry_count);
 651                                                 num_sgpgs *= reset_value;
 652                                         }
 653                                         rc = BFA_STATUS_ENOMEM;
 654                                         goto ext;
 655                                 }
 656                         }
 657
 658                         if (num_sgpgs_parm > 0)
 659                                 num_sgpgs = num_sgpgs_parm;
 660                         else {
 661                                 reset_value = (1 << retry_count);
 662                                 num_sgpgs *= reset_value;
 663                         }
 664
 665                         memset(kva, 0, meminfo_elem->mem_len);
 666                         meminfo_elem->kva = kva;
 667                         meminfo_elem->dma = phys_addr;
 668                         break;
 669                 default:
 670                         break;
 671
 672                 }
 673         }
 674 ext:
 675         return rc;
 676 }
 677
 678 /*
 679  * Create a vport under a vf.
 680  */
 681 bfa_status_t
 682 bfad_vport_create(struct bfad_s *bfad, u16 vf_id,
 683                   struct bfa_lport_cfg_s *port_cfg, struct device *dev)
 684 {
 685         struct bfad_vport_s   *vport;
 686         int             rc = BFA_STATUS_OK;
 687         unsigned long   flags;
 688         struct completion fcomp;
 689
 690         vport = kzalloc(sizeof(struct bfad_vport_s), GFP_KERNEL);
 691         if (!vport) {
 692                 rc = BFA_STATUS_ENOMEM;
 693                 goto ext;
 694         }
 695
 696         vport->drv_port.bfad = bfad;
 697         spin_lock_irqsave(&bfad->bfad_lock, flags);
 698         rc = bfa_fcs_vport_create(&vport->fcs_vport, &bfad->bfa_fcs, vf_id,
 699                                   port_cfg, vport);
 700         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 701
 702         if (rc != BFA_STATUS_OK)
 703                 goto ext_free_vport;
 704
 705         if (port_cfg->roles & BFA_LPORT_ROLE_FCP_IM) {
 706                 rc = bfad_im_scsi_host_alloc(bfad, vport->drv_port.im_port,
 707                                                         dev);
 708                 if (rc != BFA_STATUS_OK)
 709                         goto ext_free_fcs_vport;
 710         }
 711
 712         spin_lock_irqsave(&bfad->bfad_lock, flags);
 713         bfa_fcs_vport_start(&vport->fcs_vport);
 714         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 715
 716         return BFA_STATUS_OK;
 717
 718 ext_free_fcs_vport:
 719         spin_lock_irqsave(&bfad->bfad_lock, flags);
 720         vport->comp_del = &fcomp;
 721         init_completion(vport->comp_del);
 722         bfa_fcs_vport_delete(&vport->fcs_vport);
 723         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 724         wait_for_completion(vport->comp_del);
 725 ext_free_vport:
 726         kfree(vport);
 727 ext:
 728         return rc;
 729 }
 730
 731 void
 732 bfad_bfa_tmo(unsigned long data)
 733 {
 734         struct bfad_s         *bfad = (struct bfad_s *) data;
 735         unsigned long   flags;
 736         struct list_head               doneq;
 737
 738         spin_lock_irqsave(&bfad->bfad_lock, flags);
 739
 740         bfa_timer_beat(&bfad->bfa.timer_mod);
 741
 742         bfa_comp_deq(&bfad->bfa, &doneq);
 743         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 744
 745         if (!list_empty(&doneq)) {
 746                 bfa_comp_process(&bfad->bfa, &doneq);
 747                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 748                 bfa_comp_free(&bfad->bfa, &doneq);
 749                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 750         }
 751
 752         mod_timer(&bfad->hal_tmo,
 753                   jiffies + msecs_to_jiffies(BFA_TIMER_FREQ));
 754 }
 755
 756 void
 757 bfad_init_timer(struct bfad_s *bfad)
 758 {
 759         init_timer(&bfad->hal_tmo);
 760         bfad->hal_tmo.function = bfad_bfa_tmo;
 761         bfad->hal_tmo.data = (unsigned long)bfad;
 762
 763         mod_timer(&bfad->hal_tmo,
 764                   jiffies + msecs_to_jiffies(BFA_TIMER_FREQ));
 765 }
 766
 767 int
 768 bfad_pci_init(struct pci_dev *pdev, struct bfad_s *bfad)
 769 {
 770         int             rc = -ENODEV;
 771
 772         if (pci_enable_device(pdev)) {
 773                 printk(KERN_ERR "pci_enable_device fail %p\n", pdev);
 774                 goto out;
 775         }
 776
 777         if (pci_request_regions(pdev, BFAD_DRIVER_NAME))
 778                 goto out_disable_device;
 779
 780         pci_set_master(pdev);
 781
 782
 783         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0)
 784                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
 785                         printk(KERN_ERR "pci_set_dma_mask fail %p\n", pdev);
 786                         goto out_release_region;
 787                 }
 788
 789         bfad->pci_bar0_kva = pci_iomap(pdev, 0, pci_resource_len(pdev, 0));
 790
 791         if (bfad->pci_bar0_kva == NULL) {
 792                 printk(KERN_ERR "Fail to map bar0\n");
 793                 goto out_release_region;
 794         }
 795
 796         bfad->hal_pcidev.pci_slot = PCI_SLOT(pdev->devfn);
 797         bfad->hal_pcidev.pci_func = PCI_FUNC(pdev->devfn);
 798         bfad->hal_pcidev.pci_bar_kva = bfad->pci_bar0_kva;
 799         bfad->hal_pcidev.device_id = pdev->device;
 800         bfad->pci_name = pci_name(pdev);
 801
 802         bfad->pci_attr.vendor_id = pdev->vendor;
 803         bfad->pci_attr.device_id = pdev->device;
 804         bfad->pci_attr.ssid = pdev->subsystem_device;
 805         bfad->pci_attr.ssvid = pdev->subsystem_vendor;
 806         bfad->pci_attr.pcifn = PCI_FUNC(pdev->devfn);
 807
 808         bfad->pcidev = pdev;
 809
 810         /* Adjust PCIe Maximum Read Request Size */
 811         if (pcie_max_read_reqsz > 0) {
 812                 int pcie_cap_reg;
 813                 u16 pcie_dev_ctl;
 814                 u16 mask = 0xffff;
 815
 816                 switch (pcie_max_read_reqsz) {
 817                 case 128:
 818                         mask = 0x0;
 819                         break;
 820                 case 256:
 821                         mask = 0x1000;
 822                         break;
 823                 case 512:
 824                         mask = 0x2000;
 825                         break;
 826                 case 1024:
 827                         mask = 0x3000;
 828                         break;
 829                 case 2048:
 830                         mask = 0x4000;
 831                         break;
 832                 case 4096:
 833                         mask = 0x5000;
 834                         break;
 835                 default:
 836                         break;
 837                 }
 838
 839                 pcie_cap_reg = pci_find_capability(pdev, PCI_CAP_ID_EXP);
 840                 if (mask != 0xffff && pcie_cap_reg) {
 841                         pcie_cap_reg += 0x08;
 842                         pci_read_config_word(pdev, pcie_cap_reg, &pcie_dev_ctl);
 843                         if ((pcie_dev_ctl & 0x7000) != mask) {
 844                                 printk(KERN_WARNING "BFA[%s]: "
 845                                 "pcie_max_read_request_size is %d, "
 846                                 "reset to %d\n", bfad->pci_name,
 847                                 (1 << ((pcie_dev_ctl & 0x7000) >> 12)) << 7,
 848                                 pcie_max_read_reqsz);
 849
 850                                 pcie_dev_ctl &= ~0x7000;
 851                                 pci_write_config_word(pdev, pcie_cap_reg,
 852                                                 pcie_dev_ctl | mask);
 853                         }
 854                 }
 855         }
 856
 857         return 0;
 858
 859 out_release_region:
 860         pci_release_regions(pdev);
 861 out_disable_device:
 862         pci_disable_device(pdev);
 863 out:
 864         return rc;
 865 }
 866
 867 void
 868 bfad_pci_uninit(struct pci_dev *pdev, struct bfad_s *bfad)
 869 {
 870         pci_iounmap(pdev, bfad->pci_bar0_kva);
 871         pci_release_regions(pdev);
 872         pci_disable_device(pdev);
 873         pci_set_drvdata(pdev, NULL);
 874 }
 875
 876 bfa_status_t
 877 bfad_drv_init(struct bfad_s *bfad)
 878 {
 879         bfa_status_t    rc;
 880         unsigned long   flags;
 881
 882         bfad->cfg_data.rport_del_timeout = rport_del_timeout;
 883         bfad->cfg_data.lun_queue_depth = bfa_lun_queue_depth;
 884         bfad->cfg_data.io_max_sge = bfa_io_max_sge;
 885         bfad->cfg_data.binding_method = FCP_PWWN_BINDING;
 886
 887         rc = bfad_hal_mem_alloc(bfad);
 888         if (rc != BFA_STATUS_OK) {
 889                 printk(KERN_WARNING "bfad%d bfad_hal_mem_alloc failure\n",
 890                        bfad->inst_no);
 891                 printk(KERN_WARNING
 892                         "Not enough memory to attach all Brocade HBA ports, %s",
 893                         "System may need more memory.\n");
 894                 goto out_hal_mem_alloc_failure;
 895         }
 896
 897         bfad->bfa.trcmod = bfad->trcmod;
 898         bfad->bfa.plog = &bfad->plog_buf;
 899         bfa_plog_init(&bfad->plog_buf);
 900         bfa_plog_str(&bfad->plog_buf, BFA_PL_MID_DRVR, BFA_PL_EID_DRIVER_START,
 901                      0, "Driver Attach");
 902
 903         bfa_attach(&bfad->bfa, bfad, &bfad->ioc_cfg, &bfad->meminfo,
 904                    &bfad->hal_pcidev);
 905
 906         /* FCS INIT */
 907         spin_lock_irqsave(&bfad->bfad_lock, flags);
 908         bfad->bfa_fcs.trcmod = bfad->trcmod;
 909         bfa_fcs_attach(&bfad->bfa_fcs, &bfad->bfa, bfad, BFA_FALSE);
 910         bfad->bfa_fcs.fdmi_enabled = fdmi_enable;
 911         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 912
 913         bfad->bfad_flags |= BFAD_DRV_INIT_DONE;
 914
 915         return BFA_STATUS_OK;
 916
 917 out_hal_mem_alloc_failure:
 918         return BFA_STATUS_FAILED;
 919 }
 920
 921 void
 922 bfad_drv_uninit(struct bfad_s *bfad)
 923 {
 924         unsigned long   flags;
 925
 926         spin_lock_irqsave(&bfad->bfad_lock, flags);
 927         init_completion(&bfad->comp);
 928         bfa_iocfc_stop(&bfad->bfa);
 929         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 930         wait_for_completion(&bfad->comp);
 931
 932         del_timer_sync(&bfad->hal_tmo);
 933         bfa_isr_disable(&bfad->bfa);
 934         bfa_detach(&bfad->bfa);
 935         bfad_remove_intr(bfad);
 936         bfad_hal_mem_release(bfad);
 937
 938         bfad->bfad_flags &= ~BFAD_DRV_INIT_DONE;
 939 }
 940
 941 void
 942 bfad_drv_start(struct bfad_s *bfad)
 943 {
 944         unsigned long   flags;
 945
 946         spin_lock_irqsave(&bfad->bfad_lock, flags);
 947         bfa_iocfc_start(&bfad->bfa);
 948         bfa_fcs_fabric_modstart(&bfad->bfa_fcs);
 949         bfad->bfad_flags |= BFAD_HAL_START_DONE;
 950         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 951
 952         if (bfad->im)
 953                 flush_workqueue(bfad->im->drv_workq);
 954 }
 955
 956 void
 957 bfad_fcs_stop(struct bfad_s *bfad)
 958 {
 959         unsigned long   flags;
 960
 961         spin_lock_irqsave(&bfad->bfad_lock, flags);
 962         init_completion(&bfad->comp);
 963         bfad->pport.flags |= BFAD_PORT_DELETE;
 964         bfa_fcs_exit(&bfad->bfa_fcs);
 965         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 966         wait_for_completion(&bfad->comp);
 967
 968         bfa_sm_send_event(bfad, BFAD_E_FCS_EXIT_COMP);
 969 }
 970
 971 void
 972 bfad_stop(struct bfad_s *bfad)
 973 {
 974         unsigned long   flags;
 975
 976         spin_lock_irqsave(&bfad->bfad_lock, flags);
 977         init_completion(&bfad->comp);
 978         bfa_iocfc_stop(&bfad->bfa);
 979         bfad->bfad_flags &= ~BFAD_HAL_START_DONE;
 980         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 981         wait_for_completion(&bfad->comp);
 982
 983         bfa_sm_send_event(bfad, BFAD_E_EXIT_COMP);
 984 }
 985
 986 bfa_status_t
 987 bfad_cfg_pport(struct bfad_s *bfad, enum bfa_lport_role role)
 988 {
 989         int             rc = BFA_STATUS_OK;
 990
 991         /* Allocate scsi_host for the physical port */
 992         if ((supported_fc4s & BFA_LPORT_ROLE_FCP_IM) &&
 993             (role & BFA_LPORT_ROLE_FCP_IM)) {
 994                 if (bfad->pport.im_port == NULL) {
 995                         rc = BFA_STATUS_FAILED;
 996                         goto out;
 997                 }
 998
 999                 rc = bfad_im_scsi_host_alloc(bfad, bfad->pport.im_port,
1000                                                 &bfad->pcidev->dev);
1001                 if (rc != BFA_STATUS_OK)
1002                         goto out;
1003
1004                 bfad->pport.roles |= BFA_LPORT_ROLE_FCP_IM;
1005         }
1006
1007         bfad->bfad_flags |= BFAD_CFG_PPORT_DONE;
1008
1009 out:
1010         return rc;
1011 }
1012
1013 void
1014 bfad_uncfg_pport(struct bfad_s *bfad)
1015 {
1016         if ((supported_fc4s & BFA_LPORT_ROLE_FCP_IM) &&
1017             (bfad->pport.roles & BFA_LPORT_ROLE_FCP_IM)) {
1018                 bfad_im_scsi_host_free(bfad, bfad->pport.im_port);
1019                 bfad_im_port_clean(bfad->pport.im_port);
1020                 kfree(bfad->pport.im_port);
1021                 bfad->pport.roles &= ~BFA_LPORT_ROLE_FCP_IM;
1022         }
1023
1024         bfad->bfad_flags &= ~BFAD_CFG_PPORT_DONE;
1025 }
1026
1027 bfa_status_t
1028 bfad_start_ops(struct bfad_s *bfad) {
1029
1030         int     retval;
1031         unsigned long   flags;
1032         struct bfad_vport_s *vport, *vport_new;
1033         struct bfa_fcs_driver_info_s driver_info;
1034
1035         /* Fill the driver_info info to fcs*/
1036         memset(&driver_info, 0, sizeof(driver_info));
1037         strncpy(driver_info.version, BFAD_DRIVER_VERSION,
1038                 sizeof(driver_info.version) - 1);
1039         if (host_name)
1040                 strncpy(driver_info.host_machine_name, host_name,
1041                         sizeof(driver_info.host_machine_name) - 1);
1042         if (os_name)
1043                 strncpy(driver_info.host_os_name, os_name,
1044                         sizeof(driver_info.host_os_name) - 1);
1045         if (os_patch)
1046                 strncpy(driver_info.host_os_patch, os_patch,
1047                         sizeof(driver_info.host_os_patch) - 1);
1048
1049         strncpy(driver_info.os_device_name, bfad->pci_name,
1050                 sizeof(driver_info.os_device_name - 1));
1051
1052         /* FCS INIT */
1053         spin_lock_irqsave(&bfad->bfad_lock, flags);
1054         bfa_fcs_driver_info_init(&bfad->bfa_fcs, &driver_info);
1055         bfa_fcs_init(&bfad->bfa_fcs);
1056         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1057
1058         retval = bfad_cfg_pport(bfad, BFA_LPORT_ROLE_FCP_IM);
1059         if (retval != BFA_STATUS_OK) {
1060                 if (bfa_sm_cmp_state(bfad, bfad_sm_initializing))
1061                         bfa_sm_set_state(bfad, bfad_sm_failed);
1062                 bfad_stop(bfad);
1063                 return BFA_STATUS_FAILED;
1064         }
1065
1066         /* BFAD level FC4 IM specific resource allocation */
1067         retval = bfad_im_probe(bfad);
1068         if (retval != BFA_STATUS_OK) {
1069                 printk(KERN_WARNING "bfad_im_probe failed\n");
1070                 if (bfa_sm_cmp_state(bfad, bfad_sm_initializing))
1071                         bfa_sm_set_state(bfad, bfad_sm_failed);
1072                 bfad_im_probe_undo(bfad);
1073                 bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
1074                 bfad_uncfg_pport(bfad);
1075                 bfad_stop(bfad);
1076                 return BFA_STATUS_FAILED;
1077         } else
1078                 bfad->bfad_flags |= BFAD_FC4_PROBE_DONE;
1079
1080         bfad_drv_start(bfad);
1081
1082         /* Complete pbc vport create */
1083         list_for_each_entry_safe(vport, vport_new, &bfad->pbc_vport_list,
1084                                 list_entry) {
1085                 struct fc_vport_identifiers vid;
1086                 struct fc_vport *fc_vport;
1087                 char pwwn_buf[BFA_STRING_32];
1088
1089                 memset(&vid, 0, sizeof(vid));
1090                 vid.roles = FC_PORT_ROLE_FCP_INITIATOR;
1091                 vid.vport_type = FC_PORTTYPE_NPIV;
1092                 vid.disable = false;
1093                 vid.node_name = wwn_to_u64((u8 *)
1094                                 (&((vport->fcs_vport).lport.port_cfg.nwwn)));
1095                 vid.port_name = wwn_to_u64((u8 *)
1096                                 (&((vport->fcs_vport).lport.port_cfg.pwwn)));
1097                 fc_vport = fc_vport_create(bfad->pport.im_port->shost, 0, &vid);
1098                 if (!fc_vport) {
1099                         wwn2str(pwwn_buf, vid.port_name);
1100                         printk(KERN_WARNING "bfad%d: failed to create pbc vport"
1101                                 " %s\n", bfad->inst_no, pwwn_buf);
1102                 }
1103                 list_del(&vport->list_entry);
1104                 kfree(vport);
1105         }
1106
1107         /*
1108          * If bfa_linkup_delay is set to -1 default; try to retrive the
1109          * value using the bfad_get_linkup_delay(); else use the
1110          * passed in module param value as the bfa_linkup_delay.
1111          */
1112         if (bfa_linkup_delay < 0) {
1113                 bfa_linkup_delay = bfad_get_linkup_delay(bfad);
1114                 bfad_rport_online_wait(bfad);
1115                 bfa_linkup_delay = -1;
1116         } else
1117                 bfad_rport_online_wait(bfad);
1118
1119         BFA_LOG(KERN_INFO, bfad, bfa_log_level, "bfa device claimed\n");
1120
1121         return BFA_STATUS_OK;
1122 }
1123
1124 int
1125 bfad_worker(void *ptr)
1126 {
1127         struct bfad_s *bfad;
1128         unsigned long   flags;
1129
1130         bfad = (struct bfad_s *)ptr;
1131
1132         while (!kthread_should_stop()) {
1133
1134                 /* Send event BFAD_E_INIT_SUCCESS */
1135                 bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
1136
1137                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1138                 bfad->bfad_tsk = NULL;
1139                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1140
1141                 break;
1142         }
1143
1144         return 0;
1145 }
1146
1147 /*
1148  *  BFA driver interrupt functions
1149  */
1150 irqreturn_t
1151 bfad_intx(int irq, void *dev_id)
1152 {
1153         struct bfad_s   *bfad = dev_id;
1154         struct list_head        doneq;
1155         unsigned long   flags;
1156         bfa_boolean_t rc;
1157
1158         spin_lock_irqsave(&bfad->bfad_lock, flags);
1159         rc = bfa_intx(&bfad->bfa);
1160         if (!rc) {
1161                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1162                 return IRQ_NONE;
1163         }
1164
1165         bfa_comp_deq(&bfad->bfa, &doneq);
1166         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1167
1168         if (!list_empty(&doneq)) {
1169                 bfa_comp_process(&bfad->bfa, &doneq);
1170
1171                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1172                 bfa_comp_free(&bfad->bfa, &doneq);
1173                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1174         }
1175
1176         return IRQ_HANDLED;
1177
1178 }
1179
1180 static irqreturn_t
1181 bfad_msix(int irq, void *dev_id)
1182 {
1183         struct bfad_msix_s *vec = dev_id;
1184         struct bfad_s *bfad = vec->bfad;
1185         struct list_head doneq;
1186         unsigned long   flags;
1187
1188         spin_lock_irqsave(&bfad->bfad_lock, flags);
1189
1190         bfa_msix(&bfad->bfa, vec->msix.entry);
1191         bfa_comp_deq(&bfad->bfa, &doneq);
1192         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1193
1194         if (!list_empty(&doneq)) {
1195                 bfa_comp_process(&bfad->bfa, &doneq);
1196
1197                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1198                 bfa_comp_free(&bfad->bfa, &doneq);
1199                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1200         }
1201
1202         return IRQ_HANDLED;
1203 }
1204
1205 /*
1206  * Initialize the MSIX entry table.
1207  */
1208 static void
1209 bfad_init_msix_entry(struct bfad_s *bfad, struct msix_entry *msix_entries,
1210                          int mask, int max_bit)
1211 {
1212         int     i;
1213         int     match = 0x00000001;
1214
1215         for (i = 0, bfad->nvec = 0; i < MAX_MSIX_ENTRY; i++) {
1216                 if (mask & match) {
1217                         bfad->msix_tab[bfad->nvec].msix.entry = i;
1218                         bfad->msix_tab[bfad->nvec].bfad = bfad;
1219                         msix_entries[bfad->nvec].entry = i;
1220                         bfad->nvec++;
1221                 }
1222
1223                 match <<= 1;
1224         }
1225
1226 }
1227
1228 int
1229 bfad_install_msix_handler(struct bfad_s *bfad)
1230 {
1231         int i, error = 0;
1232
1233         for (i = 0; i < bfad->nvec; i++) {
1234                 sprintf(bfad->msix_tab[i].name, "bfa-%s-%s",
1235                                 bfad->pci_name,
1236                                 ((bfa_asic_id_ct(bfad->hal_pcidev.device_id)) ?
1237                                 msix_name_ct[i] : msix_name_cb[i]));
1238
1239                 error = request_irq(bfad->msix_tab[i].msix.vector,
1240                                     (irq_handler_t) bfad_msix, 0,
1241                                     bfad->msix_tab[i].name, &bfad->msix_tab[i]);
1242                 bfa_trc(bfad, i);
1243                 bfa_trc(bfad, bfad->msix_tab[i].msix.vector);
1244                 if (error) {
1245                         int     j;
1246
1247                         for (j = 0; j < i; j++)
1248                                 free_irq(bfad->msix_tab[j].msix.vector,
1249                                                 &bfad->msix_tab[j]);
1250
1251                         return 1;
1252                 }
1253         }
1254
1255         return 0;
1256 }
1257
1258 /*
1259  * Setup MSIX based interrupt.
1260  */
1261 int
1262 bfad_setup_intr(struct bfad_s *bfad)
1263 {
1264         int error = 0;
1265         u32 mask = 0, i, num_bit = 0, max_bit = 0;
1266         struct msix_entry msix_entries[MAX_MSIX_ENTRY];
1267         struct pci_dev *pdev = bfad->pcidev;
1268
1269         /* Call BFA to get the msix map for this PCI function.  */
1270         bfa_msix_getvecs(&bfad->bfa, &mask, &num_bit, &max_bit);
1271
1272         /* Set up the msix entry table */
1273         bfad_init_msix_entry(bfad, msix_entries, mask, max_bit);
1274
1275         if ((bfa_asic_id_ct(pdev->device) && !msix_disable_ct) ||
1276             (!bfa_asic_id_ct(pdev->device) && !msix_disable_cb)) {
1277
1278                 error = pci_enable_msix(bfad->pcidev, msix_entries, bfad->nvec);
1279                 if (error) {
1280                         /*
1281                          * Only error number of vector is available.
1282                          * We don't have a mechanism to map multiple
1283                          * interrupts into one vector, so even if we
1284                          * can try to request less vectors, we don't
1285                          * know how to associate interrupt events to
1286                          *  vectors. Linux doesn't duplicate vectors
1287                          * in the MSIX table for this case.
1288                          */
1289
1290                         printk(KERN_WARNING "bfad%d: "
1291                                 "pci_enable_msix failed (%d),"
1292                                 " use line based.\n", bfad->inst_no, error);
1293
1294                         goto line_based;
1295                 }
1296
1297                 /* Save the vectors */
1298                 for (i = 0; i < bfad->nvec; i++) {
1299                         bfa_trc(bfad, msix_entries[i].vector);
1300                         bfad->msix_tab[i].msix.vector = msix_entries[i].vector;
1301                 }
1302
1303                 bfa_msix_init(&bfad->bfa, bfad->nvec);
1304
1305                 bfad->bfad_flags |= BFAD_MSIX_ON;
1306
1307                 return error;
1308         }
1309
1310 line_based:
1311         error = 0;
1312         if (request_irq
1313             (bfad->pcidev->irq, (irq_handler_t) bfad_intx, BFAD_IRQ_FLAGS,
1314              BFAD_DRIVER_NAME, bfad) != 0) {
1315                 /* Enable interrupt handler failed */
1316                 return 1;
1317         }
1318
1319         return error;
1320 }
1321
1322 void
1323 bfad_remove_intr(struct bfad_s *bfad)
1324 {
1325         int     i;
1326
1327         if (bfad->bfad_flags & BFAD_MSIX_ON) {
1328                 for (i = 0; i < bfad->nvec; i++)
1329                         free_irq(bfad->msix_tab[i].msix.vector,
1330                                         &bfad->msix_tab[i]);
1331
1332                 pci_disable_msix(bfad->pcidev);
1333                 bfad->bfad_flags &= ~BFAD_MSIX_ON;
1334         } else {
1335                 free_irq(bfad->pcidev->irq, bfad);
1336         }
1337 }
1338
1339 /*
1340  * PCI probe entry.
1341  */
1342 int
1343 bfad_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid)
1344 {
1345         struct bfad_s   *bfad;
1346         int             error = -ENODEV, retval;
1347
1348         /* For single port cards - only claim function 0 */
1349         if ((pdev->device == BFA_PCI_DEVICE_ID_FC_8G1P) &&
1350                 (PCI_FUNC(pdev->devfn) != 0))
1351                 return -ENODEV;
1352
1353         bfad = kzalloc(sizeof(struct bfad_s), GFP_KERNEL);
1354         if (!bfad) {
1355                 error = -ENOMEM;
1356                 goto out;
1357         }
1358
1359         bfad->trcmod = kzalloc(sizeof(struct bfa_trc_mod_s), GFP_KERNEL);
1360         if (!bfad->trcmod) {
1361                 printk(KERN_WARNING "Error alloc trace buffer!\n");
1362                 error = -ENOMEM;
1363                 goto out_alloc_trace_failure;
1364         }
1365
1366         /* TRACE INIT */
1367         bfa_trc_init(bfad->trcmod);
1368         bfa_trc(bfad, bfad_inst);
1369
1370         if (!(bfad_load_fwimg(pdev))) {
1371                 kfree(bfad->trcmod);
1372                 goto out_alloc_trace_failure;
1373         }
1374
1375         retval = bfad_pci_init(pdev, bfad);
1376         if (retval) {
1377                 printk(KERN_WARNING "bfad_pci_init failure!\n");
1378                 error = retval;
1379                 goto out_pci_init_failure;
1380         }
1381
1382         mutex_lock(&bfad_mutex);
1383         bfad->inst_no = bfad_inst++;
1384         list_add_tail(&bfad->list_entry, &bfad_list);
1385         mutex_unlock(&bfad_mutex);
1386
1387         /* Initializing the state machine: State set to uninit */
1388         bfa_sm_set_state(bfad, bfad_sm_uninit);
1389
1390         spin_lock_init(&bfad->bfad_lock);
1391         pci_set_drvdata(pdev, bfad);
1392
1393         bfad->ref_count = 0;
1394         bfad->pport.bfad = bfad;
1395         INIT_LIST_HEAD(&bfad->pbc_vport_list);
1396
1397         /* Setup the debugfs node for this bfad */
1398         if (bfa_debugfs_enable)
1399                 bfad_debugfs_init(&bfad->pport);
1400
1401         retval = bfad_drv_init(bfad);
1402         if (retval != BFA_STATUS_OK)
1403                 goto out_drv_init_failure;
1404
1405         bfa_sm_send_event(bfad, BFAD_E_CREATE);
1406
1407         if (bfa_sm_cmp_state(bfad, bfad_sm_uninit))
1408                 goto out_bfad_sm_failure;
1409
1410         return 0;
1411
1412 out_bfad_sm_failure:
1413         bfa_detach(&bfad->bfa);
1414         bfad_hal_mem_release(bfad);
1415 out_drv_init_failure:
1416         /* Remove the debugfs node for this bfad */
1417         kfree(bfad->regdata);
1418         bfad_debugfs_exit(&bfad->pport);
1419         mutex_lock(&bfad_mutex);
1420         bfad_inst--;
1421         list_del(&bfad->list_entry);
1422         mutex_unlock(&bfad_mutex);
1423         bfad_pci_uninit(pdev, bfad);
1424 out_pci_init_failure:
1425         kfree(bfad->trcmod);
1426 out_alloc_trace_failure:
1427         kfree(bfad);
1428 out:
1429         return error;
1430 }
1431
1432 /*
1433  * PCI remove entry.
1434  */
1435 void
1436 bfad_pci_remove(struct pci_dev *pdev)
1437 {
1438         struct bfad_s         *bfad = pci_get_drvdata(pdev);
1439         unsigned long   flags;
1440
1441         bfa_trc(bfad, bfad->inst_no);
1442
1443         spin_lock_irqsave(&bfad->bfad_lock, flags);
1444         if (bfad->bfad_tsk != NULL) {
1445                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1446                 kthread_stop(bfad->bfad_tsk);
1447         } else {
1448                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1449         }
1450
1451         /* Send Event BFAD_E_STOP */
1452         bfa_sm_send_event(bfad, BFAD_E_STOP);
1453
1454         /* Driver detach and dealloc mem */
1455         spin_lock_irqsave(&bfad->bfad_lock, flags);
1456         bfa_detach(&bfad->bfa);
1457         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1458         bfad_hal_mem_release(bfad);
1459
1460         /* Remove the debugfs node for this bfad */
1461         kfree(bfad->regdata);
1462         bfad_debugfs_exit(&bfad->pport);
1463
1464         /* Cleaning the BFAD instance */
1465         mutex_lock(&bfad_mutex);
1466         bfad_inst--;
1467         list_del(&bfad->list_entry);
1468         mutex_unlock(&bfad_mutex);
1469         bfad_pci_uninit(pdev, bfad);
1470
1471         kfree(bfad->trcmod);
1472         kfree(bfad);
1473 }
1474
1475 struct pci_device_id bfad_id_table[] = {
1476         {
1477                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1478                 .device = BFA_PCI_DEVICE_ID_FC_8G2P,
1479                 .subvendor = PCI_ANY_ID,
1480                 .subdevice = PCI_ANY_ID,
1481         },
1482         {
1483                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1484                 .device = BFA_PCI_DEVICE_ID_FC_8G1P,
1485                 .subvendor = PCI_ANY_ID,
1486                 .subdevice = PCI_ANY_ID,
1487         },
1488         {
1489                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1490                 .device = BFA_PCI_DEVICE_ID_CT,
1491                 .subvendor = PCI_ANY_ID,
1492                 .subdevice = PCI_ANY_ID,
1493                 .class = (PCI_CLASS_SERIAL_FIBER << 8),
1494                 .class_mask = ~0,
1495         },
1496         {
1497                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1498                 .device = BFA_PCI_DEVICE_ID_CT_FC,
1499                 .subvendor = PCI_ANY_ID,
1500                 .subdevice = PCI_ANY_ID,
1501                 .class = (PCI_CLASS_SERIAL_FIBER << 8),
1502                 .class_mask = ~0,
1503         },
1504
1505         {0, 0},
1506 };
1507
1508 MODULE_DEVICE_TABLE(pci, bfad_id_table);
1509
1510 static struct pci_driver bfad_pci_driver = {
1511         .name = BFAD_DRIVER_NAME,
1512         .id_table = bfad_id_table,
1513         .probe = bfad_pci_probe,
1514         .remove = __devexit_p(bfad_pci_remove),
1515 };
1516
1517 /*
1518  * Driver module init.
1519  */
1520 static int __init
1521 bfad_init(void)
1522 {
1523         int             error = 0;
1524
1525         printk(KERN_INFO "Brocade BFA FC/FCOE SCSI driver - version: %s\n",
1526                         BFAD_DRIVER_VERSION);
1527
1528         if (num_sgpgs > 0)
1529                 num_sgpgs_parm = num_sgpgs;
1530
1531         error = bfad_im_module_init();
1532         if (error) {
1533                 error = -ENOMEM;
1534                 printk(KERN_WARNING "bfad_im_module_init failure\n");
1535                 goto ext;
1536         }
1537
1538         if (strcmp(FCPI_NAME, " fcpim") == 0)
1539                 supported_fc4s |= BFA_LPORT_ROLE_FCP_IM;
1540
1541         bfa_auto_recover = ioc_auto_recover;
1542         bfa_fcs_rport_set_del_timeout(rport_del_timeout);
1543
1544         error = pci_register_driver(&bfad_pci_driver);
1545         if (error) {
1546                 printk(KERN_WARNING "pci_register_driver failure\n");
1547                 goto ext;
1548         }
1549
1550         return 0;
1551
1552 ext:
1553         bfad_im_module_exit();
1554         return error;
1555 }
1556
1557 /*
1558  * Driver module exit.
1559  */
1560 static void __exit
1561 bfad_exit(void)
1562 {
1563         pci_unregister_driver(&bfad_pci_driver);
1564         bfad_im_module_exit();
1565         bfad_free_fwimg();
1566 }
1567
1568 /* Firmware handling */
1569 static void
1570 bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
1571                 u32 *bfi_image_size, char *fw_name)
1572 {
1573         const struct firmware *fw;
1574
1575         if (request_firmware(&fw, fw_name, &pdev->dev)) {
1576                 printk(KERN_ALERT "Can't locate firmware %s\n", fw_name);
1577                 *bfi_image = NULL;
1578                 goto out;
1579         }
1580
1581         *bfi_image = vmalloc(fw->size);
1582         if (NULL == *bfi_image) {
1583                 printk(KERN_ALERT "Fail to allocate buffer for fw image "
1584                         "size=%x!\n", (u32) fw->size);
1585                 goto out;
1586         }
1587
1588         memcpy(*bfi_image, fw->data, fw->size);
1589         *bfi_image_size = fw->size/sizeof(u32);
1590 out:
1591         release_firmware(fw);
1592 }
1593
1594 static u32 *
1595 bfad_load_fwimg(struct pci_dev *pdev)
1596 {
1597         if (pdev->device == BFA_PCI_DEVICE_ID_CT_FC) {
1598                 if (bfi_image_ct_fc_size == 0)
1599                         bfad_read_firmware(pdev, &bfi_image_ct_fc,
1600                                 &bfi_image_ct_fc_size, BFAD_FW_FILE_CT_FC);
1601                 return bfi_image_ct_fc;
1602         } else if (pdev->device == BFA_PCI_DEVICE_ID_CT) {
1603                 if (bfi_image_ct_cna_size == 0)
1604                         bfad_read_firmware(pdev, &bfi_image_ct_cna,
1605                                 &bfi_image_ct_cna_size, BFAD_FW_FILE_CT_CNA);
1606                 return bfi_image_ct_cna;
1607         } else {
1608                 if (bfi_image_cb_fc_size == 0)
1609                         bfad_read_firmware(pdev, &bfi_image_cb_fc,
1610                                 &bfi_image_cb_fc_size, BFAD_FW_FILE_CB_FC);
1611                 return bfi_image_cb_fc;
1612         }
1613 }
1614
1615 static void
1616 bfad_free_fwimg(void)
1617 {
1618         if (bfi_image_ct_fc_size && bfi_image_ct_fc)
1619                 vfree(bfi_image_ct_fc);
1620         if (bfi_image_ct_cna_size && bfi_image_ct_cna)
1621                 vfree(bfi_image_ct_cna);
1622         if (bfi_image_cb_fc_size && bfi_image_cb_fc)
1623                 vfree(bfi_image_cb_fc);
1624 }
1625
1626 module_init(bfad_init);
1627 module_exit(bfad_exit);
1628 MODULE_LICENSE("GPL");
1629 MODULE_DESCRIPTION("Brocade Fibre Channel HBA Driver" BFAD_PROTO_NAME);
1630 MODULE_AUTHOR("Brocade Communications Systems, Inc.");
1631 MODULE_VERSION(BFAD_DRIVER_VERSION);