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