drivers/scsi/bfa/bfad.c

   1 /*
   2  * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
   3  * All rights reserved
   4  * www.brocade.com
   5  *
   6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License (GPL) Version 2 as
  10  * published by the Free Software Foundation
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  */
  17
  18 /*
  19  *  bfad.c Linux driver PCI interface module.
  20  */
  21 #include <linux/module.h>
  22 #include <linux/kthread.h>
  23 #include <linux/errno.h>
  24 #include <linux/sched.h>
  25 #include <linux/init.h>
  26 #include <linux/fs.h>
  27 #include <linux/pci.h>
  28 #include <linux/firmware.h>
  29 #include <asm/uaccess.h>
  30 #include <asm/fcntl.h>
  31
  32 #include "bfad_drv.h"
  33 #include "bfad_im.h"
  34 #include "bfa_fcs.h"
  35 #include "bfa_defs.h"
  36 #include "bfa.h"
  37
  38 BFA_TRC_FILE(LDRV, BFAD);
  39 DEFINE_MUTEX(bfad_mutex);
  40 LIST_HEAD(bfad_list);
  41
  42 static int      bfad_inst;
  43 static int      num_sgpgs_parm;
  44 int             supported_fc4s;
  45 char            *host_name, *os_name, *os_patch;
  46 int             num_rports, num_ios, num_tms;
  47 int             num_fcxps, num_ufbufs;
  48 int             reqq_size, rspq_size, num_sgpgs;
  49 int             rport_del_timeout = BFA_FCS_RPORT_DEF_DEL_TIMEOUT;
  50 int             bfa_lun_queue_depth = BFAD_LUN_QUEUE_DEPTH;
  51 int             bfa_io_max_sge = BFAD_IO_MAX_SGE;
  52 int             bfa_log_level = 3; /* WARNING log level */
  53 int             ioc_auto_recover = BFA_TRUE;
  54 int             bfa_linkup_delay = -1;
  55 int             fdmi_enable = BFA_TRUE;
  56 int             pcie_max_read_reqsz;
  57 int             bfa_debugfs_enable = 1;
  58 int             msix_disable_cb = 0, msix_disable_ct = 0;
  59
  60 /* Firmware releated */
  61 u32     bfi_image_cb_size, bfi_image_ct_size, bfi_image_ct2_size;
  62 u32     *bfi_image_cb, *bfi_image_ct, *bfi_image_ct2;
  63
  64 #define BFAD_FW_FILE_CB         "cbfw.bin"
  65 #define BFAD_FW_FILE_CT         "ctfw.bin"
  66 #define BFAD_FW_FILE_CT2        "ct2fw.bin"
  67
  68 static u32 *bfad_load_fwimg(struct pci_dev *pdev);
  69 static void bfad_free_fwimg(void);
  70 static void bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
  71                 u32 *bfi_image_size, char *fw_name);
  72
  73 static const char *msix_name_ct[] = {
  74         "ctrl",
  75         "cpe0", "cpe1", "cpe2", "cpe3",
  76         "rme0", "rme1", "rme2", "rme3" };
  77
  78 static const char *msix_name_cb[] = {
  79         "cpe0", "cpe1", "cpe2", "cpe3",
  80         "rme0", "rme1", "rme2", "rme3",
  81         "eemc", "elpu0", "elpu1", "epss", "mlpu" };
  82
  83 MODULE_FIRMWARE(BFAD_FW_FILE_CB);
  84 MODULE_FIRMWARE(BFAD_FW_FILE_CT);
  85 MODULE_FIRMWARE(BFAD_FW_FILE_CT2);
  86
  87 module_param(os_name, charp, S_IRUGO | S_IWUSR);
  88 MODULE_PARM_DESC(os_name, "OS name of the hba host machine");
  89 module_param(os_patch, charp, S_IRUGO | S_IWUSR);
  90 MODULE_PARM_DESC(os_patch, "OS patch level of the hba host machine");
  91 module_param(host_name, charp, S_IRUGO | S_IWUSR);
  92 MODULE_PARM_DESC(host_name, "Hostname of the hba host machine");
  93 module_param(num_rports, int, S_IRUGO | S_IWUSR);
  94 MODULE_PARM_DESC(num_rports, "Max number of rports supported per port "
  95                                 "(physical/logical), default=1024");
  96 module_param(num_ios, int, S_IRUGO | S_IWUSR);
  97 MODULE_PARM_DESC(num_ios, "Max number of ioim requests, default=2000");
  98 module_param(num_tms, int, S_IRUGO | S_IWUSR);
  99 MODULE_PARM_DESC(num_tms, "Max number of task im requests, default=128");
 100 module_param(num_fcxps, int, S_IRUGO | S_IWUSR);
 101 MODULE_PARM_DESC(num_fcxps, "Max number of fcxp requests, default=64");
 102 module_param(num_ufbufs, int, S_IRUGO | S_IWUSR);
 103 MODULE_PARM_DESC(num_ufbufs, "Max number of unsolicited frame "
 104                                 "buffers, default=64");
 105 module_param(reqq_size, int, S_IRUGO | S_IWUSR);
 106 MODULE_PARM_DESC(reqq_size, "Max number of request queue elements, "
 107                                 "default=256");
 108 module_param(rspq_size, int, S_IRUGO | S_IWUSR);
 109 MODULE_PARM_DESC(rspq_size, "Max number of response queue elements, "
 110                                 "default=64");
 111 module_param(num_sgpgs, int, S_IRUGO | S_IWUSR);
 112 MODULE_PARM_DESC(num_sgpgs, "Number of scatter/gather pages, default=2048");
 113 module_param(rport_del_timeout, int, S_IRUGO | S_IWUSR);
 114 MODULE_PARM_DESC(rport_del_timeout, "Rport delete timeout, default=90 secs, "
 115                                         "Range[>0]");
 116 module_param(bfa_lun_queue_depth, int, S_IRUGO | S_IWUSR);
 117 MODULE_PARM_DESC(bfa_lun_queue_depth, "Lun queue depth, default=32, Range[>0]");
 118 module_param(bfa_io_max_sge, int, S_IRUGO | S_IWUSR);
 119 MODULE_PARM_DESC(bfa_io_max_sge, "Max io scatter/gather elements, default=255");
 120 module_param(bfa_log_level, int, S_IRUGO | S_IWUSR);
 121 MODULE_PARM_DESC(bfa_log_level, "Driver log level, default=3, "
 122                                 "Range[Critical:1|Error:2|Warning:3|Info:4]");
 123 module_param(ioc_auto_recover, int, S_IRUGO | S_IWUSR);
 124 MODULE_PARM_DESC(ioc_auto_recover, "IOC auto recovery, default=1, "
 125                                 "Range[off:0|on:1]");
 126 module_param(bfa_linkup_delay, int, S_IRUGO | S_IWUSR);
 127 MODULE_PARM_DESC(bfa_linkup_delay, "Link up delay, default=30 secs for "
 128                         "boot port. Otherwise 10 secs in RHEL4 & 0 for "
 129                         "[RHEL5, SLES10, ESX40] Range[>0]");
 130 module_param(msix_disable_cb, int, S_IRUGO | S_IWUSR);
 131 MODULE_PARM_DESC(msix_disable_cb, "Disable Message Signaled Interrupts "
 132                         "for Brocade-415/425/815/825 cards, default=0, "
 133                         " Range[false:0|true:1]");
 134 module_param(msix_disable_ct, int, S_IRUGO | S_IWUSR);
 135 MODULE_PARM_DESC(msix_disable_ct, "Disable Message Signaled Interrupts "
 136                         "if possible for Brocade-1010/1020/804/1007/902/1741 "
 137                         "cards, default=0, Range[false:0|true:1]");
 138 module_param(fdmi_enable, int, S_IRUGO | S_IWUSR);
 139 MODULE_PARM_DESC(fdmi_enable, "Enables fdmi registration, default=1, "
 140                                 "Range[false:0|true:1]");
 141 module_param(pcie_max_read_reqsz, int, S_IRUGO | S_IWUSR);
 142 MODULE_PARM_DESC(pcie_max_read_reqsz, "PCIe max read request size, default=0 "
 143                 "(use system setting), Range[128|256|512|1024|2048|4096]");
 144 module_param(bfa_debugfs_enable, int, S_IRUGO | S_IWUSR);
 145 MODULE_PARM_DESC(bfa_debugfs_enable, "Enables debugfs feature, default=1,"
 146                 " Range[false:0|true:1]");
 147
 148 static void
 149 bfad_sm_uninit(struct bfad_s *bfad, enum bfad_sm_event event);
 150 static void
 151 bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event);
 152 static void
 153 bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event);
 154 static void
 155 bfad_sm_operational(struct bfad_s *bfad, enum bfad_sm_event event);
 156 static void
 157 bfad_sm_stopping(struct bfad_s *bfad, enum bfad_sm_event event);
 158 static void
 159 bfad_sm_failed(struct bfad_s *bfad, enum bfad_sm_event event);
 160 static void
 161 bfad_sm_fcs_exit(struct bfad_s *bfad, enum bfad_sm_event event);
 162
 163 /*
 164  * Beginning state for the driver instance, awaiting the pci_probe event
 165  */
 166 static void
 167 bfad_sm_uninit(struct bfad_s *bfad, enum bfad_sm_event event)
 168 {
 169         bfa_trc(bfad, event);
 170
 171         switch (event) {
 172         case BFAD_E_CREATE:
 173                 bfa_sm_set_state(bfad, bfad_sm_created);
 174                 bfad->bfad_tsk = kthread_create(bfad_worker, (void *) bfad,
 175                                                 "%s", "bfad_worker");
 176                 if (IS_ERR(bfad->bfad_tsk)) {
 177                         printk(KERN_INFO "bfad[%d]: Kernel thread "
 178                                 "creation failed!\n", bfad->inst_no);
 179                         bfa_sm_send_event(bfad, BFAD_E_KTHREAD_CREATE_FAILED);
 180                 }
 181                 bfa_sm_send_event(bfad, BFAD_E_INIT);
 182                 break;
 183
 184         case BFAD_E_STOP:
 185                 /* Ignore stop; already in uninit */
 186                 break;
 187
 188         default:
 189                 bfa_sm_fault(bfad, event);
 190         }
 191 }
 192
 193 /*
 194  * Driver Instance is created, awaiting event INIT to initialize the bfad
 195  */
 196 static void
 197 bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event)
 198 {
 199         unsigned long flags;
 200
 201         bfa_trc(bfad, event);
 202
 203         switch (event) {
 204         case BFAD_E_INIT:
 205                 bfa_sm_set_state(bfad, bfad_sm_initializing);
 206
 207                 init_completion(&bfad->comp);
 208
 209                 /* Enable Interrupt and wait bfa_init completion */
 210                 if (bfad_setup_intr(bfad)) {
 211                         printk(KERN_WARNING "bfad%d: bfad_setup_intr failed\n",
 212                                         bfad->inst_no);
 213                         bfa_sm_send_event(bfad, BFAD_E_INTR_INIT_FAILED);
 214                         break;
 215                 }
 216
 217                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 218                 bfa_iocfc_init(&bfad->bfa);
 219                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 220
 221                 /* Set up interrupt handler for each vectors */
 222                 if ((bfad->bfad_flags & BFAD_MSIX_ON) &&
 223                         bfad_install_msix_handler(bfad)) {
 224                         printk(KERN_WARNING "%s: install_msix failed, bfad%d\n",
 225                                 __func__, bfad->inst_no);
 226                 }
 227
 228                 bfad_init_timer(bfad);
 229
 230                 wait_for_completion(&bfad->comp);
 231
 232                 if ((bfad->bfad_flags & BFAD_HAL_INIT_DONE)) {
 233                         bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
 234                 } else {
 235                         printk(KERN_WARNING
 236                                 "bfa %s: bfa init failed\n",
 237                                 bfad->pci_name);
 238                         bfad->bfad_flags |= BFAD_HAL_INIT_FAIL;
 239                         bfa_sm_send_event(bfad, BFAD_E_INIT_FAILED);
 240                 }
 241
 242                 break;
 243
 244         case BFAD_E_KTHREAD_CREATE_FAILED:
 245                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 246                 break;
 247
 248         default:
 249                 bfa_sm_fault(bfad, event);
 250         }
 251 }
 252
 253 static void
 254 bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event)
 255 {
 256         int     retval;
 257         unsigned long   flags;
 258
 259         bfa_trc(bfad, event);
 260
 261         switch (event) {
 262         case BFAD_E_INIT_SUCCESS:
 263                 kthread_stop(bfad->bfad_tsk);
 264                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 265                 bfad->bfad_tsk = NULL;
 266                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 267
 268                 retval = bfad_start_ops(bfad);
 269                 if (retval != BFA_STATUS_OK)
 270                         break;
 271                 bfa_sm_set_state(bfad, bfad_sm_operational);
 272                 break;
 273
 274         case BFAD_E_INTR_INIT_FAILED:
 275                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 276                 kthread_stop(bfad->bfad_tsk);
 277                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 278                 bfad->bfad_tsk = NULL;
 279                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 280                 break;
 281
 282         case BFAD_E_INIT_FAILED:
 283                 bfa_sm_set_state(bfad, bfad_sm_failed);
 284                 break;
 285         default:
 286                 bfa_sm_fault(bfad, event);
 287         }
 288 }
 289
 290 static void
 291 bfad_sm_failed(struct bfad_s *bfad, enum bfad_sm_event event)
 292 {
 293         int     retval;
 294
 295         bfa_trc(bfad, event);
 296
 297         switch (event) {
 298         case BFAD_E_INIT_SUCCESS:
 299                 retval = bfad_start_ops(bfad);
 300                 if (retval != BFA_STATUS_OK)
 301                         break;
 302                 bfa_sm_set_state(bfad, bfad_sm_operational);
 303                 break;
 304
 305         case BFAD_E_STOP:
 306                 if (bfad->bfad_flags & BFAD_CFG_PPORT_DONE)
 307                         bfad_uncfg_pport(bfad);
 308                 if (bfad->bfad_flags & BFAD_FC4_PROBE_DONE) {
 309                         bfad_im_probe_undo(bfad);
 310                         bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
 311                 }
 312                 bfad_stop(bfad);
 313                 break;
 314
 315         case BFAD_E_EXIT_COMP:
 316                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 317                 bfad_remove_intr(bfad);
 318                 del_timer_sync(&bfad->hal_tmo);
 319                 break;
 320
 321         default:
 322                 bfa_sm_fault(bfad, event);
 323         }
 324 }
 325
 326 static void
 327 bfad_sm_operational(struct bfad_s *bfad, enum bfad_sm_event event)
 328 {
 329         bfa_trc(bfad, event);
 330
 331         switch (event) {
 332         case BFAD_E_STOP:
 333                 bfa_sm_set_state(bfad, bfad_sm_fcs_exit);
 334                 bfad_fcs_stop(bfad);
 335                 break;
 336
 337         default:
 338                 bfa_sm_fault(bfad, event);
 339         }
 340 }
 341
 342 static void
 343 bfad_sm_fcs_exit(struct bfad_s *bfad, enum bfad_sm_event event)
 344 {
 345         bfa_trc(bfad, event);
 346
 347         switch (event) {
 348         case BFAD_E_FCS_EXIT_COMP:
 349                 bfa_sm_set_state(bfad, bfad_sm_stopping);
 350                 bfad_stop(bfad);
 351                 break;
 352
 353         default:
 354                 bfa_sm_fault(bfad, event);
 355         }
 356 }
 357
 358 static void
 359 bfad_sm_stopping(struct bfad_s *bfad, enum bfad_sm_event event)
 360 {
 361         bfa_trc(bfad, event);
 362
 363         switch (event) {
 364         case BFAD_E_EXIT_COMP:
 365                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 366                 bfad_remove_intr(bfad);
 367                 del_timer_sync(&bfad->hal_tmo);
 368                 bfad_im_probe_undo(bfad);
 369                 bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
 370                 bfad_uncfg_pport(bfad);
 371                 break;
 372
 373         default:
 374                 bfa_sm_fault(bfad, event);
 375                 break;
 376         }
 377 }
 378
 379 /*
 380  *  BFA callbacks
 381  */
 382 void
 383 bfad_hcb_comp(void *arg, bfa_status_t status)
 384 {
 385         struct bfad_hal_comp *fcomp = (struct bfad_hal_comp *)arg;
 386
 387         fcomp->status = status;
 388         complete(&fcomp->comp);
 389 }
 390
 391 /*
 392  * bfa_init callback
 393  */
 394 void
 395 bfa_cb_init(void *drv, bfa_status_t init_status)
 396 {
 397         struct bfad_s         *bfad = drv;
 398
 399         if (init_status == BFA_STATUS_OK) {
 400                 bfad->bfad_flags |= BFAD_HAL_INIT_DONE;
 401
 402                 /*
 403                  * If BFAD_HAL_INIT_FAIL flag is set:
 404                  * Wake up the kernel thread to start
 405                  * the bfad operations after HAL init done
 406                  */
 407                 if ((bfad->bfad_flags & BFAD_HAL_INIT_FAIL)) {
 408                         bfad->bfad_flags &= ~BFAD_HAL_INIT_FAIL;
 409                         wake_up_process(bfad->bfad_tsk);
 410                 }
 411         }
 412
 413         complete(&bfad->comp);
 414 }
 415
 416 /*
 417  *  BFA_FCS callbacks
 418  */
 419 struct bfad_port_s *
 420 bfa_fcb_lport_new(struct bfad_s *bfad, struct bfa_fcs_lport_s *port,
 421                  enum bfa_lport_role roles, struct bfad_vf_s *vf_drv,
 422                  struct bfad_vport_s *vp_drv)
 423 {
 424         bfa_status_t    rc;
 425         struct bfad_port_s    *port_drv;
 426
 427         if (!vp_drv && !vf_drv) {
 428                 port_drv = &bfad->pport;
 429                 port_drv->pvb_type = BFAD_PORT_PHYS_BASE;
 430         } else if (!vp_drv && vf_drv) {
 431                 port_drv = &vf_drv->base_port;
 432                 port_drv->pvb_type = BFAD_PORT_VF_BASE;
 433         } else if (vp_drv && !vf_drv) {
 434                 port_drv = &vp_drv->drv_port;
 435                 port_drv->pvb_type = BFAD_PORT_PHYS_VPORT;
 436         } else {
 437                 port_drv = &vp_drv->drv_port;
 438                 port_drv->pvb_type = BFAD_PORT_VF_VPORT;
 439         }
 440
 441         port_drv->fcs_port = port;
 442         port_drv->roles = roles;
 443
 444         if (roles & BFA_LPORT_ROLE_FCP_IM) {
 445                 rc = bfad_im_port_new(bfad, port_drv);
 446                 if (rc != BFA_STATUS_OK) {
 447                         bfad_im_port_delete(bfad, port_drv);
 448                         port_drv = NULL;
 449                 }
 450         }
 451
 452         return port_drv;
 453 }
 454
 455 void
 456 bfa_fcb_lport_delete(struct bfad_s *bfad, enum bfa_lport_role roles,
 457                     struct bfad_vf_s *vf_drv, struct bfad_vport_s *vp_drv)
 458 {
 459         struct bfad_port_s    *port_drv;
 460
 461         /* this will be only called from rmmod context */
 462         if (vp_drv && !vp_drv->comp_del) {
 463                 port_drv = (vp_drv) ? (&(vp_drv)->drv_port) :
 464                                 ((vf_drv) ? (&(vf_drv)->base_port) :
 465                                 (&(bfad)->pport));
 466                 bfa_trc(bfad, roles);
 467                 if (roles & BFA_LPORT_ROLE_FCP_IM)
 468                         bfad_im_port_delete(bfad, port_drv);
 469         }
 470 }
 471
 472 /*
 473  * FCS RPORT alloc callback, after successful PLOGI by FCS
 474  */
 475 bfa_status_t
 476 bfa_fcb_rport_alloc(struct bfad_s *bfad, struct bfa_fcs_rport_s **rport,
 477                     struct bfad_rport_s **rport_drv)
 478 {
 479         bfa_status_t    rc = BFA_STATUS_OK;
 480
 481         *rport_drv = kzalloc(sizeof(struct bfad_rport_s), GFP_ATOMIC);
 482         if (*rport_drv == NULL) {
 483                 rc = BFA_STATUS_ENOMEM;
 484                 goto ext;
 485         }
 486
 487         *rport = &(*rport_drv)->fcs_rport;
 488
 489 ext:
 490         return rc;
 491 }
 492
 493 /*
 494  * FCS PBC VPORT Create
 495  */
 496 void
 497 bfa_fcb_pbc_vport_create(struct bfad_s *bfad, struct bfi_pbc_vport_s pbc_vport)
 498 {
 499
 500         struct bfa_lport_cfg_s port_cfg = {0};
 501         struct bfad_vport_s   *vport;
 502         int rc;
 503
 504         vport = kzalloc(sizeof(struct bfad_vport_s), GFP_KERNEL);
 505         if (!vport) {
 506                 bfa_trc(bfad, 0);
 507                 return;
 508         }
 509
 510         vport->drv_port.bfad = bfad;
 511         port_cfg.roles = BFA_LPORT_ROLE_FCP_IM;
 512         port_cfg.pwwn = pbc_vport.vp_pwwn;
 513         port_cfg.nwwn = pbc_vport.vp_nwwn;
 514         port_cfg.preboot_vp  = BFA_TRUE;
 515
 516         rc = bfa_fcs_pbc_vport_create(&vport->fcs_vport, &bfad->bfa_fcs, 0,
 517                                   &port_cfg, vport);
 518
 519         if (rc != BFA_STATUS_OK) {
 520                 bfa_trc(bfad, 0);
 521                 return;
 522         }
 523
 524         list_add_tail(&vport->list_entry, &bfad->pbc_vport_list);
 525 }
 526
 527 void
 528 bfad_hal_mem_release(struct bfad_s *bfad)
 529 {
 530         int             i;
 531         struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
 532         struct bfa_mem_elem_s *meminfo_elem;
 533
 534         for (i = 0; i < BFA_MEM_TYPE_MAX; i++) {
 535                 meminfo_elem = &hal_meminfo->meminfo[i];
 536                 if (meminfo_elem->kva != NULL) {
 537                         switch (meminfo_elem->mem_type) {
 538                         case BFA_MEM_TYPE_KVA:
 539                                 vfree(meminfo_elem->kva);
 540                                 break;
 541                         case BFA_MEM_TYPE_DMA:
 542                                 dma_free_coherent(&bfad->pcidev->dev,
 543                                         meminfo_elem->mem_len,
 544                                         meminfo_elem->kva,
 545                                         (dma_addr_t) meminfo_elem->dma);
 546                                 break;
 547                         default:
 548                                 WARN_ON(1);
 549                                 break;
 550                         }
 551                 }
 552         }
 553
 554         memset(hal_meminfo, 0, sizeof(struct bfa_meminfo_s));
 555 }
 556
 557 void
 558 bfad_update_hal_cfg(struct bfa_iocfc_cfg_s *bfa_cfg)
 559 {
 560         if (num_rports > 0)
 561                 bfa_cfg->fwcfg.num_rports = num_rports;
 562         if (num_ios > 0)
 563                 bfa_cfg->fwcfg.num_ioim_reqs = num_ios;
 564         if (num_tms > 0)
 565                 bfa_cfg->fwcfg.num_tskim_reqs = num_tms;
 566         if (num_fcxps > 0)
 567                 bfa_cfg->fwcfg.num_fcxp_reqs = num_fcxps;
 568         if (num_ufbufs > 0)
 569                 bfa_cfg->fwcfg.num_uf_bufs = num_ufbufs;
 570         if (reqq_size > 0)
 571                 bfa_cfg->drvcfg.num_reqq_elems = reqq_size;
 572         if (rspq_size > 0)
 573                 bfa_cfg->drvcfg.num_rspq_elems = rspq_size;
 574         if (num_sgpgs > 0)
 575                 bfa_cfg->drvcfg.num_sgpgs = num_sgpgs;
 576
 577         /*
 578          * populate the hal values back to the driver for sysfs use.
 579          * otherwise, the default values will be shown as 0 in sysfs
 580          */
 581         num_rports = bfa_cfg->fwcfg.num_rports;
 582         num_ios = bfa_cfg->fwcfg.num_ioim_reqs;
 583         num_tms = bfa_cfg->fwcfg.num_tskim_reqs;
 584         num_fcxps = bfa_cfg->fwcfg.num_fcxp_reqs;
 585         num_ufbufs = bfa_cfg->fwcfg.num_uf_bufs;
 586         reqq_size = bfa_cfg->drvcfg.num_reqq_elems;
 587         rspq_size = bfa_cfg->drvcfg.num_rspq_elems;
 588         num_sgpgs = bfa_cfg->drvcfg.num_sgpgs;
 589 }
 590
 591 bfa_status_t
 592 bfad_hal_mem_alloc(struct bfad_s *bfad)
 593 {
 594         int             i;
 595         struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
 596         struct bfa_mem_elem_s *meminfo_elem;
 597         dma_addr_t      phys_addr;
 598         void           *kva;
 599         bfa_status_t    rc = BFA_STATUS_OK;
 600         int retry_count = 0;
 601         int reset_value = 1;
 602         int min_num_sgpgs = 512;
 603
 604         bfa_cfg_get_default(&bfad->ioc_cfg);
 605
 606 retry:
 607         bfad_update_hal_cfg(&bfad->ioc_cfg);
 608         bfad->cfg_data.ioc_queue_depth = bfad->ioc_cfg.fwcfg.num_ioim_reqs;
 609         bfa_cfg_get_meminfo(&bfad->ioc_cfg, hal_meminfo);
 610
 611         for (i = 0; i < BFA_MEM_TYPE_MAX; i++) {
 612                 meminfo_elem = &hal_meminfo->meminfo[i];
 613                 switch (meminfo_elem->mem_type) {
 614                 case BFA_MEM_TYPE_KVA:
 615                         kva = vmalloc(meminfo_elem->mem_len);
 616                         if (kva == NULL) {
 617                                 bfad_hal_mem_release(bfad);
 618                                 rc = BFA_STATUS_ENOMEM;
 619                                 goto ext;
 620                         }
 621                         memset(kva, 0, meminfo_elem->mem_len);
 622                         meminfo_elem->kva = kva;
 623                         break;
 624                 case BFA_MEM_TYPE_DMA:
 625                         kva = dma_alloc_coherent(&bfad->pcidev->dev,
 626                                 meminfo_elem->mem_len, &phys_addr, GFP_KERNEL);
 627                         if (kva == NULL) {
 628                                 bfad_hal_mem_release(bfad);
 629                                 /*
 630                                  * If we cannot allocate with default
 631                                  * num_sgpages try with half the value.
 632                                  */
 633                                 if (num_sgpgs > min_num_sgpgs) {
 634                                         printk(KERN_INFO
 635                                         "bfad[%d]: memory allocation failed"
 636                                         " with num_sgpgs: %d\n",
 637                                                 bfad->inst_no, num_sgpgs);
 638                                         nextLowerInt(&num_sgpgs);
 639                                         printk(KERN_INFO
 640                                         "bfad[%d]: trying to allocate memory"
 641                                         " with num_sgpgs: %d\n",
 642                                                 bfad->inst_no, num_sgpgs);
 643                                         retry_count++;
 644                                         goto retry;
 645                                 } else {
 646                                         if (num_sgpgs_parm > 0)
 647                                                 num_sgpgs = num_sgpgs_parm;
 648                                         else {
 649                                                 reset_value =
 650                                                         (1 << retry_count);
 651                                                 num_sgpgs *= reset_value;
 652                                         }
 653                                         rc = BFA_STATUS_ENOMEM;
 654                                         goto ext;
 655                                 }
 656                         }
 657
 658                         if (num_sgpgs_parm > 0)
 659                                 num_sgpgs = num_sgpgs_parm;
 660                         else {
 661                                 reset_value = (1 << retry_count);
 662                                 num_sgpgs *= reset_value;
 663                         }
 664
 665                         memset(kva, 0, meminfo_elem->mem_len);
 666                         meminfo_elem->kva = kva;
 667                         meminfo_elem->dma = phys_addr;
 668                         break;
 669                 default:
 670                         break;
 671
 672                 }
 673         }
 674 ext:
 675         return rc;
 676 }
 677
 678 /*
 679  * Create a vport under a vf.
 680  */
 681 bfa_status_t
 682 bfad_vport_create(struct bfad_s *bfad, u16 vf_id,
 683                   struct bfa_lport_cfg_s *port_cfg, struct device *dev)
 684 {
 685         struct bfad_vport_s   *vport;
 686         int             rc = BFA_STATUS_OK;
 687         unsigned long   flags;
 688         struct completion fcomp;
 689
 690         vport = kzalloc(sizeof(struct bfad_vport_s), GFP_KERNEL);
 691         if (!vport) {
 692                 rc = BFA_STATUS_ENOMEM;
 693                 goto ext;
 694         }
 695
 696         vport->drv_port.bfad = bfad;
 697         spin_lock_irqsave(&bfad->bfad_lock, flags);
 698         rc = bfa_fcs_vport_create(&vport->fcs_vport, &bfad->bfa_fcs, vf_id,
 699                                   port_cfg, vport);
 700         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 701
 702         if (rc != BFA_STATUS_OK)
 703                 goto ext_free_vport;
 704
 705         if (port_cfg->roles & BFA_LPORT_ROLE_FCP_IM) {
 706                 rc = bfad_im_scsi_host_alloc(bfad, vport->drv_port.im_port,
 707                                                         dev);
 708                 if (rc != BFA_STATUS_OK)
 709                         goto ext_free_fcs_vport;
 710         }
 711
 712         spin_lock_irqsave(&bfad->bfad_lock, flags);
 713         bfa_fcs_vport_start(&vport->fcs_vport);
 714         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 715
 716         return BFA_STATUS_OK;
 717
 718 ext_free_fcs_vport:
 719         spin_lock_irqsave(&bfad->bfad_lock, flags);
 720         vport->comp_del = &fcomp;
 721         init_completion(vport->comp_del);
 722         bfa_fcs_vport_delete(&vport->fcs_vport);
 723         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 724         wait_for_completion(vport->comp_del);
 725 ext_free_vport:
 726         kfree(vport);
 727 ext:
 728         return rc;
 729 }
 730
 731 void
 732 bfad_bfa_tmo(unsigned long data)
 733 {
 734         struct bfad_s         *bfad = (struct bfad_s *) data;
 735         unsigned long   flags;
 736         struct list_head               doneq;
 737
 738         spin_lock_irqsave(&bfad->bfad_lock, flags);
 739
 740         bfa_timer_beat(&bfad->bfa.timer_mod);
 741
 742         bfa_comp_deq(&bfad->bfa, &doneq);
 743         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 744
 745         if (!list_empty(&doneq)) {
 746                 bfa_comp_process(&bfad->bfa, &doneq);
 747                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 748                 bfa_comp_free(&bfad->bfa, &doneq);
 749                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 750         }
 751
 752         mod_timer(&bfad->hal_tmo,
 753                   jiffies + msecs_to_jiffies(BFA_TIMER_FREQ));
 754 }
 755
 756 void
 757 bfad_init_timer(struct bfad_s *bfad)
 758 {
 759         init_timer(&bfad->hal_tmo);
 760         bfad->hal_tmo.function = bfad_bfa_tmo;
 761         bfad->hal_tmo.data = (unsigned long)bfad;
 762
 763         mod_timer(&bfad->hal_tmo,
 764                   jiffies + msecs_to_jiffies(BFA_TIMER_FREQ));
 765 }
 766
 767 int
 768 bfad_pci_init(struct pci_dev *pdev, struct bfad_s *bfad)
 769 {
 770         int             rc = -ENODEV;
 771
 772         if (pci_enable_device(pdev)) {
 773                 printk(KERN_ERR "pci_enable_device fail %p\n", pdev);
 774                 goto out;
 775         }
 776
 777         if (pci_request_regions(pdev, BFAD_DRIVER_NAME))
 778                 goto out_disable_device;
 779
 780         pci_set_master(pdev);
 781
 782
 783         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0)
 784                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
 785                         printk(KERN_ERR "pci_set_dma_mask fail %p\n", pdev);
 786                         goto out_release_region;
 787                 }
 788
 789         bfad->pci_bar0_kva = pci_iomap(pdev, 0, pci_resource_len(pdev, 0));
 790         bfad->pci_bar2_kva = pci_iomap(pdev, 2, pci_resource_len(pdev, 2));
 791
 792         if (bfad->pci_bar0_kva == NULL) {
 793                 printk(KERN_ERR "Fail to map bar0\n");
 794                 goto out_release_region;
 795         }
 796
 797         bfad->hal_pcidev.pci_slot = PCI_SLOT(pdev->devfn);
 798         bfad->hal_pcidev.pci_func = PCI_FUNC(pdev->devfn);
 799         bfad->hal_pcidev.pci_bar_kva = bfad->pci_bar0_kva;
 800         bfad->hal_pcidev.device_id = pdev->device;
 801         bfad->pci_name = pci_name(pdev);
 802
 803         bfad->pci_attr.vendor_id = pdev->vendor;
 804         bfad->pci_attr.device_id = pdev->device;
 805         bfad->pci_attr.ssid = pdev->subsystem_device;
 806         bfad->pci_attr.ssvid = pdev->subsystem_vendor;
 807         bfad->pci_attr.pcifn = PCI_FUNC(pdev->devfn);
 808
 809         bfad->pcidev = pdev;
 810
 811         /* Adjust PCIe Maximum Read Request Size */
 812         if (pcie_max_read_reqsz > 0) {
 813                 int pcie_cap_reg;
 814                 u16 pcie_dev_ctl;
 815                 u16 mask = 0xffff;
 816
 817                 switch (pcie_max_read_reqsz) {
 818                 case 128:
 819                         mask = 0x0;
 820                         break;
 821                 case 256:
 822                         mask = 0x1000;
 823                         break;
 824                 case 512:
 825                         mask = 0x2000;
 826                         break;
 827                 case 1024:
 828                         mask = 0x3000;
 829                         break;
 830                 case 2048:
 831                         mask = 0x4000;
 832                         break;
 833                 case 4096:
 834                         mask = 0x5000;
 835                         break;
 836                 default:
 837                         break;
 838                 }
 839
 840                 pcie_cap_reg = pci_find_capability(pdev, PCI_CAP_ID_EXP);
 841                 if (mask != 0xffff && pcie_cap_reg) {
 842                         pcie_cap_reg += 0x08;
 843                         pci_read_config_word(pdev, pcie_cap_reg, &pcie_dev_ctl);
 844                         if ((pcie_dev_ctl & 0x7000) != mask) {
 845                                 printk(KERN_WARNING "BFA[%s]: "
 846                                 "pcie_max_read_request_size is %d, "
 847                                 "reset to %d\n", bfad->pci_name,
 848                                 (1 << ((pcie_dev_ctl & 0x7000) >> 12)) << 7,
 849                                 pcie_max_read_reqsz);
 850
 851                                 pcie_dev_ctl &= ~0x7000;
 852                                 pci_write_config_word(pdev, pcie_cap_reg,
 853                                                 pcie_dev_ctl | mask);
 854                         }
 855                 }
 856         }
 857
 858         return 0;
 859
 860 out_release_region:
 861         pci_release_regions(pdev);
 862 out_disable_device:
 863         pci_disable_device(pdev);
 864 out:
 865         return rc;
 866 }
 867
 868 void
 869 bfad_pci_uninit(struct pci_dev *pdev, struct bfad_s *bfad)
 870 {
 871         pci_iounmap(pdev, bfad->pci_bar0_kva);
 872         pci_iounmap(pdev, bfad->pci_bar2_kva);
 873         pci_release_regions(pdev);
 874         pci_disable_device(pdev);
 875         pci_set_drvdata(pdev, NULL);
 876 }
 877
 878 bfa_status_t
 879 bfad_drv_init(struct bfad_s *bfad)
 880 {
 881         bfa_status_t    rc;
 882         unsigned long   flags;
 883
 884         bfad->cfg_data.rport_del_timeout = rport_del_timeout;
 885         bfad->cfg_data.lun_queue_depth = bfa_lun_queue_depth;
 886         bfad->cfg_data.io_max_sge = bfa_io_max_sge;
 887         bfad->cfg_data.binding_method = FCP_PWWN_BINDING;
 888
 889         rc = bfad_hal_mem_alloc(bfad);
 890         if (rc != BFA_STATUS_OK) {
 891                 printk(KERN_WARNING "bfad%d bfad_hal_mem_alloc failure\n",
 892                        bfad->inst_no);
 893                 printk(KERN_WARNING
 894                         "Not enough memory to attach all Brocade HBA ports, %s",
 895                         "System may need more memory.\n");
 896                 goto out_hal_mem_alloc_failure;
 897         }
 898
 899         bfad->bfa.trcmod = bfad->trcmod;
 900         bfad->bfa.plog = &bfad->plog_buf;
 901         bfa_plog_init(&bfad->plog_buf);
 902         bfa_plog_str(&bfad->plog_buf, BFA_PL_MID_DRVR, BFA_PL_EID_DRIVER_START,
 903                      0, "Driver Attach");
 904
 905         bfa_attach(&bfad->bfa, bfad, &bfad->ioc_cfg, &bfad->meminfo,
 906                    &bfad->hal_pcidev);
 907
 908         /* FCS INIT */
 909         spin_lock_irqsave(&bfad->bfad_lock, flags);
 910         bfad->bfa_fcs.trcmod = bfad->trcmod;
 911         bfa_fcs_attach(&bfad->bfa_fcs, &bfad->bfa, bfad, BFA_FALSE);
 912         bfad->bfa_fcs.fdmi_enabled = fdmi_enable;
 913         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 914
 915         bfad->bfad_flags |= BFAD_DRV_INIT_DONE;
 916
 917         return BFA_STATUS_OK;
 918
 919 out_hal_mem_alloc_failure:
 920         return BFA_STATUS_FAILED;
 921 }
 922
 923 void
 924 bfad_drv_uninit(struct bfad_s *bfad)
 925 {
 926         unsigned long   flags;
 927
 928         spin_lock_irqsave(&bfad->bfad_lock, flags);
 929         init_completion(&bfad->comp);
 930         bfa_iocfc_stop(&bfad->bfa);
 931         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 932         wait_for_completion(&bfad->comp);
 933
 934         del_timer_sync(&bfad->hal_tmo);
 935         bfa_isr_disable(&bfad->bfa);
 936         bfa_detach(&bfad->bfa);
 937         bfad_remove_intr(bfad);
 938         bfad_hal_mem_release(bfad);
 939
 940         bfad->bfad_flags &= ~BFAD_DRV_INIT_DONE;
 941 }
 942
 943 void
 944 bfad_drv_start(struct bfad_s *bfad)
 945 {
 946         unsigned long   flags;
 947
 948         spin_lock_irqsave(&bfad->bfad_lock, flags);
 949         bfa_iocfc_start(&bfad->bfa);
 950         bfa_fcs_fabric_modstart(&bfad->bfa_fcs);
 951         bfad->bfad_flags |= BFAD_HAL_START_DONE;
 952         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 953
 954         if (bfad->im)
 955                 flush_workqueue(bfad->im->drv_workq);
 956 }
 957
 958 void
 959 bfad_fcs_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         bfad->pport.flags |= BFAD_PORT_DELETE;
 966         bfa_fcs_exit(&bfad->bfa_fcs);
 967         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 968         wait_for_completion(&bfad->comp);
 969
 970         bfa_sm_send_event(bfad, BFAD_E_FCS_EXIT_COMP);
 971 }
 972
 973 void
 974 bfad_stop(struct bfad_s *bfad)
 975 {
 976         unsigned long   flags;
 977
 978         spin_lock_irqsave(&bfad->bfad_lock, flags);
 979         init_completion(&bfad->comp);
 980         bfa_iocfc_stop(&bfad->bfa);
 981         bfad->bfad_flags &= ~BFAD_HAL_START_DONE;
 982         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 983         wait_for_completion(&bfad->comp);
 984
 985         bfa_sm_send_event(bfad, BFAD_E_EXIT_COMP);
 986 }
 987
 988 bfa_status_t
 989 bfad_cfg_pport(struct bfad_s *bfad, enum bfa_lport_role role)
 990 {
 991         int             rc = BFA_STATUS_OK;
 992
 993         /* Allocate scsi_host for the physical port */
 994         if ((supported_fc4s & BFA_LPORT_ROLE_FCP_IM) &&
 995             (role & BFA_LPORT_ROLE_FCP_IM)) {
 996                 if (bfad->pport.im_port == NULL) {
 997                         rc = BFA_STATUS_FAILED;
 998                         goto out;
 999                 }
1000
1001                 rc = bfad_im_scsi_host_alloc(bfad, bfad->pport.im_port,
1002                                                 &bfad->pcidev->dev);
1003                 if (rc != BFA_STATUS_OK)
1004                         goto out;
1005
1006                 bfad->pport.roles |= BFA_LPORT_ROLE_FCP_IM;
1007         }
1008
1009         bfad->bfad_flags |= BFAD_CFG_PPORT_DONE;
1010
1011 out:
1012         return rc;
1013 }
1014
1015 void
1016 bfad_uncfg_pport(struct bfad_s *bfad)
1017 {
1018         if ((supported_fc4s & BFA_LPORT_ROLE_FCP_IM) &&
1019             (bfad->pport.roles & BFA_LPORT_ROLE_FCP_IM)) {
1020                 bfad_im_scsi_host_free(bfad, bfad->pport.im_port);
1021                 bfad_im_port_clean(bfad->pport.im_port);
1022                 kfree(bfad->pport.im_port);
1023                 bfad->pport.roles &= ~BFA_LPORT_ROLE_FCP_IM;
1024         }
1025
1026         bfad->bfad_flags &= ~BFAD_CFG_PPORT_DONE;
1027 }
1028
1029 bfa_status_t
1030 bfad_start_ops(struct bfad_s *bfad) {
1031
1032         int     retval;
1033         unsigned long   flags;
1034         struct bfad_vport_s *vport, *vport_new;
1035         struct bfa_fcs_driver_info_s driver_info;
1036
1037         /* Fill the driver_info info to fcs*/
1038         memset(&driver_info, 0, sizeof(driver_info));
1039         strncpy(driver_info.version, BFAD_DRIVER_VERSION,
1040                 sizeof(driver_info.version) - 1);
1041         if (host_name)
1042                 strncpy(driver_info.host_machine_name, host_name,
1043                         sizeof(driver_info.host_machine_name) - 1);
1044         if (os_name)
1045                 strncpy(driver_info.host_os_name, os_name,
1046                         sizeof(driver_info.host_os_name) - 1);
1047         if (os_patch)
1048                 strncpy(driver_info.host_os_patch, os_patch,
1049                         sizeof(driver_info.host_os_patch) - 1);
1050
1051         strncpy(driver_info.os_device_name, bfad->pci_name,
1052                 sizeof(driver_info.os_device_name - 1));
1053
1054         /* FCS INIT */
1055         spin_lock_irqsave(&bfad->bfad_lock, flags);
1056         bfa_fcs_driver_info_init(&bfad->bfa_fcs, &driver_info);
1057         bfa_fcs_init(&bfad->bfa_fcs);
1058         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1059
1060         retval = bfad_cfg_pport(bfad, BFA_LPORT_ROLE_FCP_IM);
1061         if (retval != BFA_STATUS_OK) {
1062                 if (bfa_sm_cmp_state(bfad, bfad_sm_initializing))
1063                         bfa_sm_set_state(bfad, bfad_sm_failed);
1064                 bfad_stop(bfad);
1065                 return BFA_STATUS_FAILED;
1066         }
1067
1068         /* BFAD level FC4 IM specific resource allocation */
1069         retval = bfad_im_probe(bfad);
1070         if (retval != BFA_STATUS_OK) {
1071                 printk(KERN_WARNING "bfad_im_probe failed\n");
1072                 if (bfa_sm_cmp_state(bfad, bfad_sm_initializing))
1073                         bfa_sm_set_state(bfad, bfad_sm_failed);
1074                 bfad_im_probe_undo(bfad);
1075                 bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
1076                 bfad_uncfg_pport(bfad);
1077                 bfad_stop(bfad);
1078                 return BFA_STATUS_FAILED;
1079         } else
1080                 bfad->bfad_flags |= BFAD_FC4_PROBE_DONE;
1081
1082         bfad_drv_start(bfad);
1083
1084         /* Complete pbc vport create */
1085         list_for_each_entry_safe(vport, vport_new, &bfad->pbc_vport_list,
1086                                 list_entry) {
1087                 struct fc_vport_identifiers vid;
1088                 struct fc_vport *fc_vport;
1089                 char pwwn_buf[BFA_STRING_32];
1090
1091                 memset(&vid, 0, sizeof(vid));
1092                 vid.roles = FC_PORT_ROLE_FCP_INITIATOR;
1093                 vid.vport_type = FC_PORTTYPE_NPIV;
1094                 vid.disable = false;
1095                 vid.node_name = wwn_to_u64((u8 *)
1096                                 (&((vport->fcs_vport).lport.port_cfg.nwwn)));
1097                 vid.port_name = wwn_to_u64((u8 *)
1098                                 (&((vport->fcs_vport).lport.port_cfg.pwwn)));
1099                 fc_vport = fc_vport_create(bfad->pport.im_port->shost, 0, &vid);
1100                 if (!fc_vport) {
1101                         wwn2str(pwwn_buf, vid.port_name);
1102                         printk(KERN_WARNING "bfad%d: failed to create pbc vport"
1103                                 " %s\n", bfad->inst_no, pwwn_buf);
1104                 }
1105                 list_del(&vport->list_entry);
1106                 kfree(vport);
1107         }
1108
1109         /*
1110          * If bfa_linkup_delay is set to -1 default; try to retrive the
1111          * value using the bfad_get_linkup_delay(); else use the
1112          * passed in module param value as the bfa_linkup_delay.
1113          */
1114         if (bfa_linkup_delay < 0) {
1115                 bfa_linkup_delay = bfad_get_linkup_delay(bfad);
1116                 bfad_rport_online_wait(bfad);
1117                 bfa_linkup_delay = -1;
1118         } else
1119                 bfad_rport_online_wait(bfad);
1120
1121         BFA_LOG(KERN_INFO, bfad, bfa_log_level, "bfa device claimed\n");
1122
1123         return BFA_STATUS_OK;
1124 }
1125
1126 int
1127 bfad_worker(void *ptr)
1128 {
1129         struct bfad_s *bfad;
1130         unsigned long   flags;
1131
1132         bfad = (struct bfad_s *)ptr;
1133
1134         while (!kthread_should_stop()) {
1135
1136                 /* Send event BFAD_E_INIT_SUCCESS */
1137                 bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
1138
1139                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1140                 bfad->bfad_tsk = NULL;
1141                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1142
1143                 break;
1144         }
1145
1146         return 0;
1147 }
1148
1149 /*
1150  *  BFA driver interrupt functions
1151  */
1152 irqreturn_t
1153 bfad_intx(int irq, void *dev_id)
1154 {
1155         struct bfad_s   *bfad = dev_id;
1156         struct list_head        doneq;
1157         unsigned long   flags;
1158         bfa_boolean_t rc;
1159
1160         spin_lock_irqsave(&bfad->bfad_lock, flags);
1161         rc = bfa_intx(&bfad->bfa);
1162         if (!rc) {
1163                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1164                 return IRQ_NONE;
1165         }
1166
1167         bfa_comp_deq(&bfad->bfa, &doneq);
1168         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1169
1170         if (!list_empty(&doneq)) {
1171                 bfa_comp_process(&bfad->bfa, &doneq);
1172
1173                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1174                 bfa_comp_free(&bfad->bfa, &doneq);
1175                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1176         }
1177
1178         return IRQ_HANDLED;
1179
1180 }
1181
1182 static irqreturn_t
1183 bfad_msix(int irq, void *dev_id)
1184 {
1185         struct bfad_msix_s *vec = dev_id;
1186         struct bfad_s *bfad = vec->bfad;
1187         struct list_head doneq;
1188         unsigned long   flags;
1189
1190         spin_lock_irqsave(&bfad->bfad_lock, flags);
1191
1192         bfa_msix(&bfad->bfa, vec->msix.entry);
1193         bfa_comp_deq(&bfad->bfa, &doneq);
1194         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1195
1196         if (!list_empty(&doneq)) {
1197                 bfa_comp_process(&bfad->bfa, &doneq);
1198
1199                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1200                 bfa_comp_free(&bfad->bfa, &doneq);
1201                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1202         }
1203
1204         return IRQ_HANDLED;
1205 }
1206
1207 /*
1208  * Initialize the MSIX entry table.
1209  */
1210 static void
1211 bfad_init_msix_entry(struct bfad_s *bfad, struct msix_entry *msix_entries,
1212                          int mask, int max_bit)
1213 {
1214         int     i;
1215         int     match = 0x00000001;
1216
1217         for (i = 0, bfad->nvec = 0; i < MAX_MSIX_ENTRY; i++) {
1218                 if (mask & match) {
1219                         bfad->msix_tab[bfad->nvec].msix.entry = i;
1220                         bfad->msix_tab[bfad->nvec].bfad = bfad;
1221                         msix_entries[bfad->nvec].entry = i;
1222                         bfad->nvec++;
1223                 }
1224
1225                 match <<= 1;
1226         }
1227
1228 }
1229
1230 int
1231 bfad_install_msix_handler(struct bfad_s *bfad)
1232 {
1233         int i, error = 0;
1234
1235         for (i = 0; i < bfad->nvec; i++) {
1236                 sprintf(bfad->msix_tab[i].name, "bfa-%s-%s",
1237                                 bfad->pci_name,
1238                                 ((bfa_asic_id_cb(bfad->hal_pcidev.device_id)) ?
1239                                 msix_name_cb[i] : msix_name_ct[i]));
1240
1241                 error = request_irq(bfad->msix_tab[i].msix.vector,
1242                                     (irq_handler_t) bfad_msix, 0,
1243                                     bfad->msix_tab[i].name, &bfad->msix_tab[i]);
1244                 bfa_trc(bfad, i);
1245                 bfa_trc(bfad, bfad->msix_tab[i].msix.vector);
1246                 if (error) {
1247                         int     j;
1248
1249                         for (j = 0; j < i; j++)
1250                                 free_irq(bfad->msix_tab[j].msix.vector,
1251                                                 &bfad->msix_tab[j]);
1252
1253                         return 1;
1254                 }
1255         }
1256
1257         return 0;
1258 }
1259
1260 /*
1261  * Setup MSIX based interrupt.
1262  */
1263 int
1264 bfad_setup_intr(struct bfad_s *bfad)
1265 {
1266         int error = 0;
1267         u32 mask = 0, i, num_bit = 0, max_bit = 0;
1268         struct msix_entry msix_entries[MAX_MSIX_ENTRY];
1269         struct pci_dev *pdev = bfad->pcidev;
1270
1271         /* Call BFA to get the msix map for this PCI function.  */
1272         bfa_msix_getvecs(&bfad->bfa, &mask, &num_bit, &max_bit);
1273
1274         /* Set up the msix entry table */
1275         bfad_init_msix_entry(bfad, msix_entries, mask, max_bit);
1276
1277         if ((bfa_asic_id_ctc(pdev->device) && !msix_disable_ct) ||
1278            (bfa_asic_id_cb(pdev->device) && !msix_disable_cb)) {
1279
1280                 error = pci_enable_msix(bfad->pcidev, msix_entries, bfad->nvec);
1281                 if (error) {
1282                         /*
1283                          * Only error number of vector is available.
1284                          * We don't have a mechanism to map multiple
1285                          * interrupts into one vector, so even if we
1286                          * can try to request less vectors, we don't
1287                          * know how to associate interrupt events to
1288                          *  vectors. Linux doesn't duplicate vectors
1289                          * in the MSIX table for this case.
1290                          */
1291
1292                         printk(KERN_WARNING "bfad%d: "
1293                                 "pci_enable_msix failed (%d),"
1294                                 " use line based.\n", bfad->inst_no, error);
1295
1296                         goto line_based;
1297                 }
1298
1299                 /* Save the vectors */
1300                 for (i = 0; i < bfad->nvec; i++) {
1301                         bfa_trc(bfad, msix_entries[i].vector);
1302                         bfad->msix_tab[i].msix.vector = msix_entries[i].vector;
1303                 }
1304
1305                 bfa_msix_init(&bfad->bfa, bfad->nvec);
1306
1307                 bfad->bfad_flags |= BFAD_MSIX_ON;
1308
1309                 return error;
1310         }
1311
1312 line_based:
1313         error = 0;
1314         if (request_irq
1315             (bfad->pcidev->irq, (irq_handler_t) bfad_intx, BFAD_IRQ_FLAGS,
1316              BFAD_DRIVER_NAME, bfad) != 0) {
1317                 /* Enable interrupt handler failed */
1318                 return 1;
1319         }
1320
1321         return error;
1322 }
1323
1324 void
1325 bfad_remove_intr(struct bfad_s *bfad)
1326 {
1327         int     i;
1328
1329         if (bfad->bfad_flags & BFAD_MSIX_ON) {
1330                 for (i = 0; i < bfad->nvec; i++)
1331                         free_irq(bfad->msix_tab[i].msix.vector,
1332                                         &bfad->msix_tab[i]);
1333
1334                 pci_disable_msix(bfad->pcidev);
1335                 bfad->bfad_flags &= ~BFAD_MSIX_ON;
1336         } else {
1337                 free_irq(bfad->pcidev->irq, bfad);
1338         }
1339 }
1340
1341 /*
1342  * PCI probe entry.
1343  */
1344 int
1345 bfad_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid)
1346 {
1347         struct bfad_s   *bfad;
1348         int             error = -ENODEV, retval;
1349
1350         /* For single port cards - only claim function 0 */
1351         if ((pdev->device == BFA_PCI_DEVICE_ID_FC_8G1P) &&
1352                 (PCI_FUNC(pdev->devfn) != 0))
1353                 return -ENODEV;
1354
1355         bfad = kzalloc(sizeof(struct bfad_s), GFP_KERNEL);
1356         if (!bfad) {
1357                 error = -ENOMEM;
1358                 goto out;
1359         }
1360
1361         bfad->trcmod = kzalloc(sizeof(struct bfa_trc_mod_s), GFP_KERNEL);
1362         if (!bfad->trcmod) {
1363                 printk(KERN_WARNING "Error alloc trace buffer!\n");
1364                 error = -ENOMEM;
1365                 goto out_alloc_trace_failure;
1366         }
1367
1368         /* TRACE INIT */
1369         bfa_trc_init(bfad->trcmod);
1370         bfa_trc(bfad, bfad_inst);
1371
1372         if (!(bfad_load_fwimg(pdev))) {
1373                 kfree(bfad->trcmod);
1374                 goto out_alloc_trace_failure;
1375         }
1376
1377         retval = bfad_pci_init(pdev, bfad);
1378         if (retval) {
1379                 printk(KERN_WARNING "bfad_pci_init failure!\n");
1380                 error = retval;
1381                 goto out_pci_init_failure;
1382         }
1383
1384         mutex_lock(&bfad_mutex);
1385         bfad->inst_no = bfad_inst++;
1386         list_add_tail(&bfad->list_entry, &bfad_list);
1387         mutex_unlock(&bfad_mutex);
1388
1389         /* Initializing the state machine: State set to uninit */
1390         bfa_sm_set_state(bfad, bfad_sm_uninit);
1391
1392         spin_lock_init(&bfad->bfad_lock);
1393         pci_set_drvdata(pdev, bfad);
1394
1395         bfad->ref_count = 0;
1396         bfad->pport.bfad = bfad;
1397         INIT_LIST_HEAD(&bfad->pbc_vport_list);
1398
1399         /* Setup the debugfs node for this bfad */
1400         if (bfa_debugfs_enable)
1401                 bfad_debugfs_init(&bfad->pport);
1402
1403         retval = bfad_drv_init(bfad);
1404         if (retval != BFA_STATUS_OK)
1405                 goto out_drv_init_failure;
1406
1407         bfa_sm_send_event(bfad, BFAD_E_CREATE);
1408
1409         if (bfa_sm_cmp_state(bfad, bfad_sm_uninit))
1410                 goto out_bfad_sm_failure;
1411
1412         return 0;
1413
1414 out_bfad_sm_failure:
1415         bfa_detach(&bfad->bfa);
1416         bfad_hal_mem_release(bfad);
1417 out_drv_init_failure:
1418         /* Remove the debugfs node for this bfad */
1419         kfree(bfad->regdata);
1420         bfad_debugfs_exit(&bfad->pport);
1421         mutex_lock(&bfad_mutex);
1422         bfad_inst--;
1423         list_del(&bfad->list_entry);
1424         mutex_unlock(&bfad_mutex);
1425         bfad_pci_uninit(pdev, bfad);
1426 out_pci_init_failure:
1427         kfree(bfad->trcmod);
1428 out_alloc_trace_failure:
1429         kfree(bfad);
1430 out:
1431         return error;
1432 }
1433
1434 /*
1435  * PCI remove entry.
1436  */
1437 void
1438 bfad_pci_remove(struct pci_dev *pdev)
1439 {
1440         struct bfad_s         *bfad = pci_get_drvdata(pdev);
1441         unsigned long   flags;
1442
1443         bfa_trc(bfad, bfad->inst_no);
1444
1445         spin_lock_irqsave(&bfad->bfad_lock, flags);
1446         if (bfad->bfad_tsk != NULL) {
1447                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1448                 kthread_stop(bfad->bfad_tsk);
1449         } else {
1450                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1451         }
1452
1453         /* Send Event BFAD_E_STOP */
1454         bfa_sm_send_event(bfad, BFAD_E_STOP);
1455
1456         /* Driver detach and dealloc mem */
1457         spin_lock_irqsave(&bfad->bfad_lock, flags);
1458         bfa_detach(&bfad->bfa);
1459         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1460         bfad_hal_mem_release(bfad);
1461
1462         /* Remove the debugfs node for this bfad */
1463         kfree(bfad->regdata);
1464         bfad_debugfs_exit(&bfad->pport);
1465
1466         /* Cleaning the BFAD instance */
1467         mutex_lock(&bfad_mutex);
1468         bfad_inst--;
1469         list_del(&bfad->list_entry);
1470         mutex_unlock(&bfad_mutex);
1471         bfad_pci_uninit(pdev, bfad);
1472
1473         kfree(bfad->trcmod);
1474         kfree(bfad);
1475 }
1476
1477 struct pci_device_id bfad_id_table[] = {
1478         {
1479                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1480                 .device = BFA_PCI_DEVICE_ID_FC_8G2P,
1481                 .subvendor = PCI_ANY_ID,
1482                 .subdevice = PCI_ANY_ID,
1483         },
1484         {
1485                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1486                 .device = BFA_PCI_DEVICE_ID_FC_8G1P,
1487                 .subvendor = PCI_ANY_ID,
1488                 .subdevice = PCI_ANY_ID,
1489         },
1490         {
1491                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1492                 .device = BFA_PCI_DEVICE_ID_CT,
1493                 .subvendor = PCI_ANY_ID,
1494                 .subdevice = PCI_ANY_ID,
1495                 .class = (PCI_CLASS_SERIAL_FIBER << 8),
1496                 .class_mask = ~0,
1497         },
1498         {
1499                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1500                 .device = BFA_PCI_DEVICE_ID_CT_FC,
1501                 .subvendor = PCI_ANY_ID,
1502                 .subdevice = PCI_ANY_ID,
1503                 .class = (PCI_CLASS_SERIAL_FIBER << 8),
1504                 .class_mask = ~0,
1505         },
1506         {
1507                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1508                 .device = BFA_PCI_DEVICE_ID_CT2,
1509                 .subvendor = PCI_ANY_ID,
1510                 .subdevice = PCI_ANY_ID,
1511                 .class = (PCI_CLASS_SERIAL_FIBER << 8),
1512                 .class_mask = ~0,
1513         },
1514
1515         {0, 0},
1516 };
1517
1518 MODULE_DEVICE_TABLE(pci, bfad_id_table);
1519
1520 static struct pci_driver bfad_pci_driver = {
1521         .name = BFAD_DRIVER_NAME,
1522         .id_table = bfad_id_table,
1523         .probe = bfad_pci_probe,
1524         .remove = __devexit_p(bfad_pci_remove),
1525 };
1526
1527 /*
1528  * Driver module init.
1529  */
1530 static int __init
1531 bfad_init(void)
1532 {
1533         int             error = 0;
1534
1535         printk(KERN_INFO "Brocade BFA FC/FCOE SCSI driver - version: %s\n",
1536                         BFAD_DRIVER_VERSION);
1537
1538         if (num_sgpgs > 0)
1539                 num_sgpgs_parm = num_sgpgs;
1540
1541         error = bfad_im_module_init();
1542         if (error) {
1543                 error = -ENOMEM;
1544                 printk(KERN_WARNING "bfad_im_module_init failure\n");
1545                 goto ext;
1546         }
1547
1548         if (strcmp(FCPI_NAME, " fcpim") == 0)
1549                 supported_fc4s |= BFA_LPORT_ROLE_FCP_IM;
1550
1551         bfa_auto_recover = ioc_auto_recover;
1552         bfa_fcs_rport_set_del_timeout(rport_del_timeout);
1553
1554         error = pci_register_driver(&bfad_pci_driver);
1555         if (error) {
1556                 printk(KERN_WARNING "pci_register_driver failure\n");
1557                 goto ext;
1558         }
1559
1560         return 0;
1561
1562 ext:
1563         bfad_im_module_exit();
1564         return error;
1565 }
1566
1567 /*
1568  * Driver module exit.
1569  */
1570 static void __exit
1571 bfad_exit(void)
1572 {
1573         pci_unregister_driver(&bfad_pci_driver);
1574         bfad_im_module_exit();
1575         bfad_free_fwimg();
1576 }
1577
1578 /* Firmware handling */
1579 static void
1580 bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
1581                 u32 *bfi_image_size, char *fw_name)
1582 {
1583         const struct firmware *fw;
1584
1585         if (request_firmware(&fw, fw_name, &pdev->dev)) {
1586                 printk(KERN_ALERT "Can't locate firmware %s\n", fw_name);
1587                 *bfi_image = NULL;
1588                 goto out;
1589         }
1590
1591         *bfi_image = vmalloc(fw->size);
1592         if (NULL == *bfi_image) {
1593                 printk(KERN_ALERT "Fail to allocate buffer for fw image "
1594                         "size=%x!\n", (u32) fw->size);
1595                 goto out;
1596         }
1597
1598         memcpy(*bfi_image, fw->data, fw->size);
1599         *bfi_image_size = fw->size/sizeof(u32);
1600 out:
1601         release_firmware(fw);
1602 }
1603
1604 static u32 *
1605 bfad_load_fwimg(struct pci_dev *pdev)
1606 {
1607         if (pdev->device == BFA_PCI_DEVICE_ID_CT2) {
1608                 if (bfi_image_ct2_size == 0)
1609                         bfad_read_firmware(pdev, &bfi_image_ct2,
1610                                 &bfi_image_ct2_size, BFAD_FW_FILE_CT2);
1611                 return bfi_image_ct2;
1612         } else if (bfa_asic_id_ct(pdev->device)) {
1613                 if (bfi_image_ct_size == 0)
1614                         bfad_read_firmware(pdev, &bfi_image_ct,
1615                                 &bfi_image_ct_size, BFAD_FW_FILE_CT);
1616                 return bfi_image_ct;
1617         } else {
1618                 if (bfi_image_cb_size == 0)
1619                         bfad_read_firmware(pdev, &bfi_image_cb,
1620                                 &bfi_image_cb_size, BFAD_FW_FILE_CB);
1621                 return bfi_image_cb;
1622         }
1623 }
1624
1625 static void
1626 bfad_free_fwimg(void)
1627 {
1628         if (bfi_image_ct2_size && bfi_image_ct2)
1629                 vfree(bfi_image_ct2);
1630         if (bfi_image_ct_size && bfi_image_ct)
1631                 vfree(bfi_image_ct);
1632         if (bfi_image_cb_size && bfi_image_cb)
1633                 vfree(bfi_image_cb);
1634 }
1635
1636 module_init(bfad_init);
1637 module_exit(bfad_exit);
1638 MODULE_LICENSE("GPL");
1639 MODULE_DESCRIPTION("Brocade Fibre Channel HBA Driver" BFAD_PROTO_NAME);
1640 MODULE_AUTHOR("Brocade Communications Systems, Inc.");
1641 MODULE_VERSION(BFAD_DRIVER_VERSION);