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