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 int             max_xfer_size = BFAD_MAX_SECTORS >> 1;
  60
  61 /* Firmware releated */
  62 u32     bfi_image_cb_size, bfi_image_ct_size, bfi_image_ct2_size;
  63 u32     *bfi_image_cb, *bfi_image_ct, *bfi_image_ct2;
  64
  65 #define BFAD_FW_FILE_CB         "/*(DEBLOBBED)*/"
  66 #define BFAD_FW_FILE_CT         "/*(DEBLOBBED)*/"
  67 #define BFAD_FW_FILE_CT2        "/*(DEBLOBBED)*/"
  68
  69 static u32 *bfad_load_fwimg(struct pci_dev *pdev);
  70 static void bfad_free_fwimg(void);
  71 static void bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
  72                 u32 *bfi_image_size, char *fw_name);
  73
  74 static const char *msix_name_ct[] = {
  75         "ctrl",
  76         "cpe0", "cpe1", "cpe2", "cpe3",
  77         "rme0", "rme1", "rme2", "rme3" };
  78
  79 static const char *msix_name_cb[] = {
  80         "cpe0", "cpe1", "cpe2", "cpe3",
  81         "rme0", "rme1", "rme2", "rme3",
  82         "eemc", "elpu0", "elpu1", "epss", "mlpu" };
  83
  84 /*(DEBLOBBED)*/
  85
  86 module_param(os_name, charp, S_IRUGO | S_IWUSR);
  87 MODULE_PARM_DESC(os_name, "OS name of the hba host machine");
  88 module_param(os_patch, charp, S_IRUGO | S_IWUSR);
  89 MODULE_PARM_DESC(os_patch, "OS patch level of the hba host machine");
  90 module_param(host_name, charp, S_IRUGO | S_IWUSR);
  91 MODULE_PARM_DESC(host_name, "Hostname of the hba host machine");
  92 module_param(num_rports, int, S_IRUGO | S_IWUSR);
  93 MODULE_PARM_DESC(num_rports, "Max number of rports supported per port "
  94                                 "(physical/logical), default=1024");
  95 module_param(num_ios, int, S_IRUGO | S_IWUSR);
  96 MODULE_PARM_DESC(num_ios, "Max number of ioim requests, default=2000");
  97 module_param(num_tms, int, S_IRUGO | S_IWUSR);
  98 MODULE_PARM_DESC(num_tms, "Max number of task im requests, default=128");
  99 module_param(num_fcxps, int, S_IRUGO | S_IWUSR);
 100 MODULE_PARM_DESC(num_fcxps, "Max number of fcxp requests, default=64");
 101 module_param(num_ufbufs, int, S_IRUGO | S_IWUSR);
 102 MODULE_PARM_DESC(num_ufbufs, "Max number of unsolicited frame "
 103                                 "buffers, default=64");
 104 module_param(reqq_size, int, S_IRUGO | S_IWUSR);
 105 MODULE_PARM_DESC(reqq_size, "Max number of request queue elements, "
 106                                 "default=256");
 107 module_param(rspq_size, int, S_IRUGO | S_IWUSR);
 108 MODULE_PARM_DESC(rspq_size, "Max number of response queue elements, "
 109                                 "default=64");
 110 module_param(num_sgpgs, int, S_IRUGO | S_IWUSR);
 111 MODULE_PARM_DESC(num_sgpgs, "Number of scatter/gather pages, default=2048");
 112 module_param(rport_del_timeout, int, S_IRUGO | S_IWUSR);
 113 MODULE_PARM_DESC(rport_del_timeout, "Rport delete timeout, default=90 secs, "
 114                                         "Range[>0]");
 115 module_param(bfa_lun_queue_depth, int, S_IRUGO | S_IWUSR);
 116 MODULE_PARM_DESC(bfa_lun_queue_depth, "Lun queue depth, default=32, Range[>0]");
 117 module_param(bfa_io_max_sge, int, S_IRUGO | S_IWUSR);
 118 MODULE_PARM_DESC(bfa_io_max_sge, "Max io scatter/gather elements, default=255");
 119 module_param(bfa_log_level, int, S_IRUGO | S_IWUSR);
 120 MODULE_PARM_DESC(bfa_log_level, "Driver log level, default=3, "
 121                                 "Range[Critical:1|Error:2|Warning:3|Info:4]");
 122 module_param(ioc_auto_recover, int, S_IRUGO | S_IWUSR);
 123 MODULE_PARM_DESC(ioc_auto_recover, "IOC auto recovery, default=1, "
 124                                 "Range[off:0|on:1]");
 125 module_param(bfa_linkup_delay, int, S_IRUGO | S_IWUSR);
 126 MODULE_PARM_DESC(bfa_linkup_delay, "Link up delay, default=30 secs for "
 127                         "boot port. Otherwise 10 secs in RHEL4 & 0 for "
 128                         "[RHEL5, SLES10, ESX40] Range[>0]");
 129 module_param(msix_disable_cb, int, S_IRUGO | S_IWUSR);
 130 MODULE_PARM_DESC(msix_disable_cb, "Disable Message Signaled Interrupts "
 131                         "for Brocade-415/425/815/825 cards, default=0, "
 132                         " Range[false:0|true:1]");
 133 module_param(msix_disable_ct, int, S_IRUGO | S_IWUSR);
 134 MODULE_PARM_DESC(msix_disable_ct, "Disable Message Signaled Interrupts "
 135                         "if possible for Brocade-1010/1020/804/1007/902/1741 "
 136                         "cards, default=0, Range[false:0|true:1]");
 137 module_param(fdmi_enable, int, S_IRUGO | S_IWUSR);
 138 MODULE_PARM_DESC(fdmi_enable, "Enables fdmi registration, default=1, "
 139                                 "Range[false:0|true:1]");
 140 module_param(pcie_max_read_reqsz, int, S_IRUGO | S_IWUSR);
 141 MODULE_PARM_DESC(pcie_max_read_reqsz, "PCIe max read request size, default=0 "
 142                 "(use system setting), Range[128|256|512|1024|2048|4096]");
 143 module_param(bfa_debugfs_enable, int, S_IRUGO | S_IWUSR);
 144 MODULE_PARM_DESC(bfa_debugfs_enable, "Enables debugfs feature, default=1,"
 145                 " Range[false:0|true:1]");
 146 module_param(max_xfer_size, int, S_IRUGO | S_IWUSR);
 147 MODULE_PARM_DESC(max_xfer_size, "default=32MB,"
 148                 " Range[64k|128k|256k|512k|1024k|2048k]");
 149
 150 static void
 151 bfad_sm_uninit(struct bfad_s *bfad, enum bfad_sm_event event);
 152 static void
 153 bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event);
 154 static void
 155 bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event);
 156 static void
 157 bfad_sm_operational(struct bfad_s *bfad, enum bfad_sm_event event);
 158 static void
 159 bfad_sm_stopping(struct bfad_s *bfad, enum bfad_sm_event event);
 160 static void
 161 bfad_sm_failed(struct bfad_s *bfad, enum bfad_sm_event event);
 162 static void
 163 bfad_sm_fcs_exit(struct bfad_s *bfad, enum bfad_sm_event event);
 164
 165 /*
 166  * Beginning state for the driver instance, awaiting the pci_probe event
 167  */
 168 static void
 169 bfad_sm_uninit(struct bfad_s *bfad, enum bfad_sm_event event)
 170 {
 171         bfa_trc(bfad, event);
 172
 173         switch (event) {
 174         case BFAD_E_CREATE:
 175                 bfa_sm_set_state(bfad, bfad_sm_created);
 176                 bfad->bfad_tsk = kthread_create(bfad_worker, (void *) bfad,
 177                                                 "%s", "bfad_worker");
 178                 if (IS_ERR(bfad->bfad_tsk)) {
 179                         printk(KERN_INFO "bfad[%d]: Kernel thread "
 180                                 "creation failed!\n", bfad->inst_no);
 181                         bfa_sm_send_event(bfad, BFAD_E_KTHREAD_CREATE_FAILED);
 182                 }
 183                 bfa_sm_send_event(bfad, BFAD_E_INIT);
 184                 break;
 185
 186         case BFAD_E_STOP:
 187                 /* Ignore stop; already in uninit */
 188                 break;
 189
 190         default:
 191                 bfa_sm_fault(bfad, event);
 192         }
 193 }
 194
 195 /*
 196  * Driver Instance is created, awaiting event INIT to initialize the bfad
 197  */
 198 static void
 199 bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event)
 200 {
 201         unsigned long flags;
 202
 203         bfa_trc(bfad, event);
 204
 205         switch (event) {
 206         case BFAD_E_INIT:
 207                 bfa_sm_set_state(bfad, bfad_sm_initializing);
 208
 209                 init_completion(&bfad->comp);
 210
 211                 /* Enable Interrupt and wait bfa_init completion */
 212                 if (bfad_setup_intr(bfad)) {
 213                         printk(KERN_WARNING "bfad%d: bfad_setup_intr failed\n",
 214                                         bfad->inst_no);
 215                         bfa_sm_send_event(bfad, BFAD_E_INTR_INIT_FAILED);
 216                         break;
 217                 }
 218
 219                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 220                 bfa_iocfc_init(&bfad->bfa);
 221                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 222
 223                 /* Set up interrupt handler for each vectors */
 224                 if ((bfad->bfad_flags & BFAD_MSIX_ON) &&
 225                         bfad_install_msix_handler(bfad)) {
 226                         printk(KERN_WARNING "%s: install_msix failed, bfad%d\n",
 227                                 __func__, bfad->inst_no);
 228                 }
 229
 230                 bfad_init_timer(bfad);
 231
 232                 wait_for_completion(&bfad->comp);
 233
 234                 if ((bfad->bfad_flags & BFAD_HAL_INIT_DONE)) {
 235                         bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
 236                 } else {
 237                         printk(KERN_WARNING
 238                                 "bfa %s: bfa init failed\n",
 239                                 bfad->pci_name);
 240                         bfad->bfad_flags |= BFAD_HAL_INIT_FAIL;
 241                         bfa_sm_send_event(bfad, BFAD_E_INIT_FAILED);
 242                 }
 243
 244                 break;
 245
 246         case BFAD_E_KTHREAD_CREATE_FAILED:
 247                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 248                 break;
 249
 250         default:
 251                 bfa_sm_fault(bfad, event);
 252         }
 253 }
 254
 255 static void
 256 bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event)
 257 {
 258         int     retval;
 259         unsigned long   flags;
 260
 261         bfa_trc(bfad, event);
 262
 263         switch (event) {
 264         case BFAD_E_INIT_SUCCESS:
 265                 kthread_stop(bfad->bfad_tsk);
 266                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 267                 bfad->bfad_tsk = NULL;
 268                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 269
 270                 retval = bfad_start_ops(bfad);
 271                 if (retval != BFA_STATUS_OK)
 272                         break;
 273                 bfa_sm_set_state(bfad, bfad_sm_operational);
 274                 break;
 275
 276         case BFAD_E_INTR_INIT_FAILED:
 277                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 278                 kthread_stop(bfad->bfad_tsk);
 279                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 280                 bfad->bfad_tsk = NULL;
 281                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 282                 break;
 283
 284         case BFAD_E_INIT_FAILED:
 285                 bfa_sm_set_state(bfad, bfad_sm_failed);
 286                 break;
 287         default:
 288                 bfa_sm_fault(bfad, event);
 289         }
 290 }
 291
 292 static void
 293 bfad_sm_failed(struct bfad_s *bfad, enum bfad_sm_event event)
 294 {
 295         int     retval;
 296
 297         bfa_trc(bfad, event);
 298
 299         switch (event) {
 300         case BFAD_E_INIT_SUCCESS:
 301                 retval = bfad_start_ops(bfad);
 302                 if (retval != BFA_STATUS_OK)
 303                         break;
 304                 bfa_sm_set_state(bfad, bfad_sm_operational);
 305                 break;
 306
 307         case BFAD_E_STOP:
 308                 if (bfad->bfad_flags & BFAD_CFG_PPORT_DONE)
 309                         bfad_uncfg_pport(bfad);
 310                 if (bfad->bfad_flags & BFAD_FC4_PROBE_DONE) {
 311                         bfad_im_probe_undo(bfad);
 312                         bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
 313                 }
 314                 bfad_stop(bfad);
 315                 break;
 316
 317         case BFAD_E_EXIT_COMP:
 318                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 319                 bfad_remove_intr(bfad);
 320                 del_timer_sync(&bfad->hal_tmo);
 321                 break;
 322
 323         default:
 324                 bfa_sm_fault(bfad, event);
 325         }
 326 }
 327
 328 static void
 329 bfad_sm_operational(struct bfad_s *bfad, enum bfad_sm_event event)
 330 {
 331         bfa_trc(bfad, event);
 332
 333         switch (event) {
 334         case BFAD_E_STOP:
 335                 bfa_sm_set_state(bfad, bfad_sm_fcs_exit);
 336                 bfad_fcs_stop(bfad);
 337                 break;
 338
 339         default:
 340                 bfa_sm_fault(bfad, event);
 341         }
 342 }
 343
 344 static void
 345 bfad_sm_fcs_exit(struct bfad_s *bfad, enum bfad_sm_event event)
 346 {
 347         bfa_trc(bfad, event);
 348
 349         switch (event) {
 350         case BFAD_E_FCS_EXIT_COMP:
 351                 bfa_sm_set_state(bfad, bfad_sm_stopping);
 352                 bfad_stop(bfad);
 353                 break;
 354
 355         default:
 356                 bfa_sm_fault(bfad, event);
 357         }
 358 }
 359
 360 static void
 361 bfad_sm_stopping(struct bfad_s *bfad, enum bfad_sm_event event)
 362 {
 363         bfa_trc(bfad, event);
 364
 365         switch (event) {
 366         case BFAD_E_EXIT_COMP:
 367                 bfa_sm_set_state(bfad, bfad_sm_uninit);
 368                 bfad_remove_intr(bfad);
 369                 del_timer_sync(&bfad->hal_tmo);
 370                 bfad_im_probe_undo(bfad);
 371                 bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
 372                 bfad_uncfg_pport(bfad);
 373                 break;
 374
 375         default:
 376                 bfa_sm_fault(bfad, event);
 377                 break;
 378         }
 379 }
 380
 381 /*
 382  *  BFA callbacks
 383  */
 384 void
 385 bfad_hcb_comp(void *arg, bfa_status_t status)
 386 {
 387         struct bfad_hal_comp *fcomp = (struct bfad_hal_comp *)arg;
 388
 389         fcomp->status = status;
 390         complete(&fcomp->comp);
 391 }
 392
 393 /*
 394  * bfa_init callback
 395  */
 396 void
 397 bfa_cb_init(void *drv, bfa_status_t init_status)
 398 {
 399         struct bfad_s         *bfad = drv;
 400
 401         if (init_status == BFA_STATUS_OK) {
 402                 bfad->bfad_flags |= BFAD_HAL_INIT_DONE;
 403
 404                 /*
 405                  * If BFAD_HAL_INIT_FAIL flag is set:
 406                  * Wake up the kernel thread to start
 407                  * the bfad operations after HAL init done
 408                  */
 409                 if ((bfad->bfad_flags & BFAD_HAL_INIT_FAIL)) {
 410                         bfad->bfad_flags &= ~BFAD_HAL_INIT_FAIL;
 411                         wake_up_process(bfad->bfad_tsk);
 412                 }
 413         }
 414
 415         complete(&bfad->comp);
 416 }
 417
 418 /*
 419  *  BFA_FCS callbacks
 420  */
 421 struct bfad_port_s *
 422 bfa_fcb_lport_new(struct bfad_s *bfad, struct bfa_fcs_lport_s *port,
 423                  enum bfa_lport_role roles, struct bfad_vf_s *vf_drv,
 424                  struct bfad_vport_s *vp_drv)
 425 {
 426         bfa_status_t    rc;
 427         struct bfad_port_s    *port_drv;
 428
 429         if (!vp_drv && !vf_drv) {
 430                 port_drv = &bfad->pport;
 431                 port_drv->pvb_type = BFAD_PORT_PHYS_BASE;
 432         } else if (!vp_drv && vf_drv) {
 433                 port_drv = &vf_drv->base_port;
 434                 port_drv->pvb_type = BFAD_PORT_VF_BASE;
 435         } else if (vp_drv && !vf_drv) {
 436                 port_drv = &vp_drv->drv_port;
 437                 port_drv->pvb_type = BFAD_PORT_PHYS_VPORT;
 438         } else {
 439                 port_drv = &vp_drv->drv_port;
 440                 port_drv->pvb_type = BFAD_PORT_VF_VPORT;
 441         }
 442
 443         port_drv->fcs_port = port;
 444         port_drv->roles = roles;
 445
 446         if (roles & BFA_LPORT_ROLE_FCP_IM) {
 447                 rc = bfad_im_port_new(bfad, port_drv);
 448                 if (rc != BFA_STATUS_OK) {
 449                         bfad_im_port_delete(bfad, port_drv);
 450                         port_drv = NULL;
 451                 }
 452         }
 453
 454         return port_drv;
 455 }
 456
 457 void
 458 bfa_fcb_lport_delete(struct bfad_s *bfad, enum bfa_lport_role roles,
 459                     struct bfad_vf_s *vf_drv, struct bfad_vport_s *vp_drv)
 460 {
 461         struct bfad_port_s    *port_drv;
 462
 463         /* this will be only called from rmmod context */
 464         if (vp_drv && !vp_drv->comp_del) {
 465                 port_drv = (vp_drv) ? (&(vp_drv)->drv_port) :
 466                                 ((vf_drv) ? (&(vf_drv)->base_port) :
 467                                 (&(bfad)->pport));
 468                 bfa_trc(bfad, roles);
 469                 if (roles & BFA_LPORT_ROLE_FCP_IM)
 470                         bfad_im_port_delete(bfad, port_drv);
 471         }
 472 }
 473
 474 /*
 475  * FCS RPORT alloc callback, after successful PLOGI by FCS
 476  */
 477 bfa_status_t
 478 bfa_fcb_rport_alloc(struct bfad_s *bfad, struct bfa_fcs_rport_s **rport,
 479                     struct bfad_rport_s **rport_drv)
 480 {
 481         bfa_status_t    rc = BFA_STATUS_OK;
 482
 483         *rport_drv = kzalloc(sizeof(struct bfad_rport_s), GFP_ATOMIC);
 484         if (*rport_drv == NULL) {
 485                 rc = BFA_STATUS_ENOMEM;
 486                 goto ext;
 487         }
 488
 489         *rport = &(*rport_drv)->fcs_rport;
 490
 491 ext:
 492         return rc;
 493 }
 494
 495 /*
 496  * FCS PBC VPORT Create
 497  */
 498 void
 499 bfa_fcb_pbc_vport_create(struct bfad_s *bfad, struct bfi_pbc_vport_s pbc_vport)
 500 {
 501
 502         struct bfa_lport_cfg_s port_cfg = {0};
 503         struct bfad_vport_s   *vport;
 504         int rc;
 505
 506         vport = kzalloc(sizeof(struct bfad_vport_s), GFP_KERNEL);
 507         if (!vport) {
 508                 bfa_trc(bfad, 0);
 509                 return;
 510         }
 511
 512         vport->drv_port.bfad = bfad;
 513         port_cfg.roles = BFA_LPORT_ROLE_FCP_IM;
 514         port_cfg.pwwn = pbc_vport.vp_pwwn;
 515         port_cfg.nwwn = pbc_vport.vp_nwwn;
 516         port_cfg.preboot_vp  = BFA_TRUE;
 517
 518         rc = bfa_fcs_pbc_vport_create(&vport->fcs_vport, &bfad->bfa_fcs, 0,
 519                                   &port_cfg, vport);
 520
 521         if (rc != BFA_STATUS_OK) {
 522                 bfa_trc(bfad, 0);
 523                 return;
 524         }
 525
 526         list_add_tail(&vport->list_entry, &bfad->pbc_vport_list);
 527 }
 528
 529 void
 530 bfad_hal_mem_release(struct bfad_s *bfad)
 531 {
 532         struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
 533         struct bfa_mem_dma_s *dma_info, *dma_elem;
 534         struct bfa_mem_kva_s *kva_info, *kva_elem;
 535         struct list_head *dm_qe, *km_qe;
 536
 537         dma_info = &hal_meminfo->dma_info;
 538         kva_info = &hal_meminfo->kva_info;
 539
 540         /* Iterate through the KVA meminfo queue */
 541         list_for_each(km_qe, &kva_info->qe) {
 542                 kva_elem = (struct bfa_mem_kva_s *) km_qe;
 543                 vfree(kva_elem->kva);
 544         }
 545
 546         /* Iterate through the DMA meminfo queue */
 547         list_for_each(dm_qe, &dma_info->qe) {
 548                 dma_elem = (struct bfa_mem_dma_s *) dm_qe;
 549                 dma_free_coherent(&bfad->pcidev->dev,
 550                                 dma_elem->mem_len, dma_elem->kva,
 551                                 (dma_addr_t) dma_elem->dma);
 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 && num_fcxps <= BFA_FCXP_MAX)
 567                 bfa_cfg->fwcfg.num_fcxp_reqs = num_fcxps;
 568         if (num_ufbufs > 0 && num_ufbufs <= BFA_UF_MAX)
 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 && num_sgpgs <= BFA_SGPG_MAX)
 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         struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
 595         struct bfa_mem_dma_s *dma_info, *dma_elem;
 596         struct bfa_mem_kva_s *kva_info, *kva_elem;
 597         struct list_head *dm_qe, *km_qe;
 598         bfa_status_t    rc = BFA_STATUS_OK;
 599         dma_addr_t      phys_addr;
 600
 601         bfa_cfg_get_default(&bfad->ioc_cfg);
 602         bfad_update_hal_cfg(&bfad->ioc_cfg);
 603         bfad->cfg_data.ioc_queue_depth = bfad->ioc_cfg.fwcfg.num_ioim_reqs;
 604         bfa_cfg_get_meminfo(&bfad->ioc_cfg, hal_meminfo, &bfad->bfa);
 605
 606         dma_info = &hal_meminfo->dma_info;
 607         kva_info = &hal_meminfo->kva_info;
 608
 609         /* Iterate through the KVA meminfo queue */
 610         list_for_each(km_qe, &kva_info->qe) {
 611                 kva_elem = (struct bfa_mem_kva_s *) km_qe;
 612                 kva_elem->kva = vmalloc(kva_elem->mem_len);
 613                 if (kva_elem->kva == NULL) {
 614                         bfad_hal_mem_release(bfad);
 615                         rc = BFA_STATUS_ENOMEM;
 616                         goto ext;
 617                 }
 618                 memset(kva_elem->kva, 0, kva_elem->mem_len);
 619         }
 620
 621         /* Iterate through the DMA meminfo queue */
 622         list_for_each(dm_qe, &dma_info->qe) {
 623                 dma_elem = (struct bfa_mem_dma_s *) dm_qe;
 624                 dma_elem->kva = dma_alloc_coherent(&bfad->pcidev->dev,
 625                                                 dma_elem->mem_len,
 626                                                 &phys_addr, GFP_KERNEL);
 627                 if (dma_elem->kva == NULL) {
 628                         bfad_hal_mem_release(bfad);
 629                         rc = BFA_STATUS_ENOMEM;
 630                         goto ext;
 631                 }
 632                 dma_elem->dma = phys_addr;
 633                 memset(dma_elem->kva, 0, dma_elem->mem_len);
 634         }
 635 ext:
 636         return rc;
 637 }
 638
 639 /*
 640  * Create a vport under a vf.
 641  */
 642 bfa_status_t
 643 bfad_vport_create(struct bfad_s *bfad, u16 vf_id,
 644                   struct bfa_lport_cfg_s *port_cfg, struct device *dev)
 645 {
 646         struct bfad_vport_s   *vport;
 647         int             rc = BFA_STATUS_OK;
 648         unsigned long   flags;
 649         struct completion fcomp;
 650
 651         vport = kzalloc(sizeof(struct bfad_vport_s), GFP_KERNEL);
 652         if (!vport) {
 653                 rc = BFA_STATUS_ENOMEM;
 654                 goto ext;
 655         }
 656
 657         vport->drv_port.bfad = bfad;
 658         spin_lock_irqsave(&bfad->bfad_lock, flags);
 659         rc = bfa_fcs_vport_create(&vport->fcs_vport, &bfad->bfa_fcs, vf_id,
 660                                   port_cfg, vport);
 661         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 662
 663         if (rc != BFA_STATUS_OK)
 664                 goto ext_free_vport;
 665
 666         if (port_cfg->roles & BFA_LPORT_ROLE_FCP_IM) {
 667                 rc = bfad_im_scsi_host_alloc(bfad, vport->drv_port.im_port,
 668                                                         dev);
 669                 if (rc != BFA_STATUS_OK)
 670                         goto ext_free_fcs_vport;
 671         }
 672
 673         spin_lock_irqsave(&bfad->bfad_lock, flags);
 674         bfa_fcs_vport_start(&vport->fcs_vport);
 675         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 676
 677         return BFA_STATUS_OK;
 678
 679 ext_free_fcs_vport:
 680         spin_lock_irqsave(&bfad->bfad_lock, flags);
 681         vport->comp_del = &fcomp;
 682         init_completion(vport->comp_del);
 683         bfa_fcs_vport_delete(&vport->fcs_vport);
 684         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 685         wait_for_completion(vport->comp_del);
 686 ext_free_vport:
 687         kfree(vport);
 688 ext:
 689         return rc;
 690 }
 691
 692 void
 693 bfad_bfa_tmo(unsigned long data)
 694 {
 695         struct bfad_s         *bfad = (struct bfad_s *) data;
 696         unsigned long   flags;
 697         struct list_head               doneq;
 698
 699         spin_lock_irqsave(&bfad->bfad_lock, flags);
 700
 701         bfa_timer_beat(&bfad->bfa.timer_mod);
 702
 703         bfa_comp_deq(&bfad->bfa, &doneq);
 704         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 705
 706         if (!list_empty(&doneq)) {
 707                 bfa_comp_process(&bfad->bfa, &doneq);
 708                 spin_lock_irqsave(&bfad->bfad_lock, flags);
 709                 bfa_comp_free(&bfad->bfa, &doneq);
 710                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 711         }
 712
 713         mod_timer(&bfad->hal_tmo,
 714                   jiffies + msecs_to_jiffies(BFA_TIMER_FREQ));
 715 }
 716
 717 void
 718 bfad_init_timer(struct bfad_s *bfad)
 719 {
 720         init_timer(&bfad->hal_tmo);
 721         bfad->hal_tmo.function = bfad_bfa_tmo;
 722         bfad->hal_tmo.data = (unsigned long)bfad;
 723
 724         mod_timer(&bfad->hal_tmo,
 725                   jiffies + msecs_to_jiffies(BFA_TIMER_FREQ));
 726 }
 727
 728 int
 729 bfad_pci_init(struct pci_dev *pdev, struct bfad_s *bfad)
 730 {
 731         int             rc = -ENODEV;
 732
 733         if (pci_enable_device(pdev)) {
 734                 printk(KERN_ERR "pci_enable_device fail %p\n", pdev);
 735                 goto out;
 736         }
 737
 738         if (pci_request_regions(pdev, BFAD_DRIVER_NAME))
 739                 goto out_disable_device;
 740
 741         pci_set_master(pdev);
 742
 743
 744         if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) ||
 745             (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0)) {
 746                 if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) ||
 747                    (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) {
 748                         printk(KERN_ERR "pci_set_dma_mask fail %p\n", pdev);
 749                         goto out_release_region;
 750                 }
 751         }
 752
 753         bfad->pci_bar0_kva = pci_iomap(pdev, 0, pci_resource_len(pdev, 0));
 754         bfad->pci_bar2_kva = pci_iomap(pdev, 2, pci_resource_len(pdev, 2));
 755
 756         if (bfad->pci_bar0_kva == NULL) {
 757                 printk(KERN_ERR "Fail to map bar0\n");
 758                 goto out_release_region;
 759         }
 760
 761         bfad->hal_pcidev.pci_slot = PCI_SLOT(pdev->devfn);
 762         bfad->hal_pcidev.pci_func = PCI_FUNC(pdev->devfn);
 763         bfad->hal_pcidev.pci_bar_kva = bfad->pci_bar0_kva;
 764         bfad->hal_pcidev.device_id = pdev->device;
 765         bfad->hal_pcidev.ssid = pdev->subsystem_device;
 766         bfad->pci_name = pci_name(pdev);
 767
 768         bfad->pci_attr.vendor_id = pdev->vendor;
 769         bfad->pci_attr.device_id = pdev->device;
 770         bfad->pci_attr.ssid = pdev->subsystem_device;
 771         bfad->pci_attr.ssvid = pdev->subsystem_vendor;
 772         bfad->pci_attr.pcifn = PCI_FUNC(pdev->devfn);
 773
 774         bfad->pcidev = pdev;
 775
 776         /* Adjust PCIe Maximum Read Request Size */
 777         if (pcie_max_read_reqsz > 0) {
 778                 int pcie_cap_reg;
 779                 u16 pcie_dev_ctl;
 780                 u16 mask = 0xffff;
 781
 782                 switch (pcie_max_read_reqsz) {
 783                 case 128:
 784                         mask = 0x0;
 785                         break;
 786                 case 256:
 787                         mask = 0x1000;
 788                         break;
 789                 case 512:
 790                         mask = 0x2000;
 791                         break;
 792                 case 1024:
 793                         mask = 0x3000;
 794                         break;
 795                 case 2048:
 796                         mask = 0x4000;
 797                         break;
 798                 case 4096:
 799                         mask = 0x5000;
 800                         break;
 801                 default:
 802                         break;
 803                 }
 804
 805                 pcie_cap_reg = pci_find_capability(pdev, PCI_CAP_ID_EXP);
 806                 if (mask != 0xffff && pcie_cap_reg) {
 807                         pcie_cap_reg += 0x08;
 808                         pci_read_config_word(pdev, pcie_cap_reg, &pcie_dev_ctl);
 809                         if ((pcie_dev_ctl & 0x7000) != mask) {
 810                                 printk(KERN_WARNING "BFA[%s]: "
 811                                 "pcie_max_read_request_size is %d, "
 812                                 "reset to %d\n", bfad->pci_name,
 813                                 (1 << ((pcie_dev_ctl & 0x7000) >> 12)) << 7,
 814                                 pcie_max_read_reqsz);
 815
 816                                 pcie_dev_ctl &= ~0x7000;
 817                                 pci_write_config_word(pdev, pcie_cap_reg,
 818                                                 pcie_dev_ctl | mask);
 819                         }
 820                 }
 821         }
 822
 823         return 0;
 824
 825 out_release_region:
 826         pci_release_regions(pdev);
 827 out_disable_device:
 828         pci_disable_device(pdev);
 829 out:
 830         return rc;
 831 }
 832
 833 void
 834 bfad_pci_uninit(struct pci_dev *pdev, struct bfad_s *bfad)
 835 {
 836         pci_iounmap(pdev, bfad->pci_bar0_kva);
 837         pci_iounmap(pdev, bfad->pci_bar2_kva);
 838         pci_release_regions(pdev);
 839         pci_disable_device(pdev);
 840         pci_set_drvdata(pdev, NULL);
 841 }
 842
 843 bfa_status_t
 844 bfad_drv_init(struct bfad_s *bfad)
 845 {
 846         bfa_status_t    rc;
 847         unsigned long   flags;
 848
 849         bfad->cfg_data.rport_del_timeout = rport_del_timeout;
 850         bfad->cfg_data.lun_queue_depth = bfa_lun_queue_depth;
 851         bfad->cfg_data.io_max_sge = bfa_io_max_sge;
 852         bfad->cfg_data.binding_method = FCP_PWWN_BINDING;
 853
 854         rc = bfad_hal_mem_alloc(bfad);
 855         if (rc != BFA_STATUS_OK) {
 856                 printk(KERN_WARNING "bfad%d bfad_hal_mem_alloc failure\n",
 857                        bfad->inst_no);
 858                 printk(KERN_WARNING
 859                         "Not enough memory to attach all Brocade HBA ports, %s",
 860                         "System may need more memory.\n");
 861                 goto out_hal_mem_alloc_failure;
 862         }
 863
 864         bfad->bfa.trcmod = bfad->trcmod;
 865         bfad->bfa.plog = &bfad->plog_buf;
 866         bfa_plog_init(&bfad->plog_buf);
 867         bfa_plog_str(&bfad->plog_buf, BFA_PL_MID_DRVR, BFA_PL_EID_DRIVER_START,
 868                      0, "Driver Attach");
 869
 870         bfa_attach(&bfad->bfa, bfad, &bfad->ioc_cfg, &bfad->meminfo,
 871                    &bfad->hal_pcidev);
 872
 873         /* FCS INIT */
 874         spin_lock_irqsave(&bfad->bfad_lock, flags);
 875         bfad->bfa_fcs.trcmod = bfad->trcmod;
 876         bfa_fcs_attach(&bfad->bfa_fcs, &bfad->bfa, bfad, BFA_FALSE);
 877         bfad->bfa_fcs.fdmi_enabled = fdmi_enable;
 878         bfa_fcs_init(&bfad->bfa_fcs);
 879         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 880
 881         bfad->bfad_flags |= BFAD_DRV_INIT_DONE;
 882
 883         /* configure base port */
 884         rc = bfad_cfg_pport(bfad, BFA_LPORT_ROLE_FCP_IM);
 885         if (rc != BFA_STATUS_OK)
 886                 goto out_cfg_pport_fail;
 887
 888         return BFA_STATUS_OK;
 889
 890 out_cfg_pport_fail:
 891         /* fcs exit - on cfg pport failure */
 892         spin_lock_irqsave(&bfad->bfad_lock, flags);
 893         init_completion(&bfad->comp);
 894         bfad->pport.flags |= BFAD_PORT_DELETE;
 895         bfa_fcs_exit(&bfad->bfa_fcs);
 896         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 897         wait_for_completion(&bfad->comp);
 898         /* bfa detach - free hal memory */
 899         bfa_detach(&bfad->bfa);
 900         bfad_hal_mem_release(bfad);
 901 out_hal_mem_alloc_failure:
 902         return BFA_STATUS_FAILED;
 903 }
 904
 905 void
 906 bfad_drv_uninit(struct bfad_s *bfad)
 907 {
 908         unsigned long   flags;
 909
 910         spin_lock_irqsave(&bfad->bfad_lock, flags);
 911         init_completion(&bfad->comp);
 912         bfa_iocfc_stop(&bfad->bfa);
 913         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 914         wait_for_completion(&bfad->comp);
 915
 916         del_timer_sync(&bfad->hal_tmo);
 917         bfa_isr_disable(&bfad->bfa);
 918         bfa_detach(&bfad->bfa);
 919         bfad_remove_intr(bfad);
 920         bfad_hal_mem_release(bfad);
 921
 922         bfad->bfad_flags &= ~BFAD_DRV_INIT_DONE;
 923 }
 924
 925 void
 926 bfad_drv_start(struct bfad_s *bfad)
 927 {
 928         unsigned long   flags;
 929
 930         spin_lock_irqsave(&bfad->bfad_lock, flags);
 931         bfa_iocfc_start(&bfad->bfa);
 932         bfa_fcs_pbc_vport_init(&bfad->bfa_fcs);
 933         bfa_fcs_fabric_modstart(&bfad->bfa_fcs);
 934         bfad->bfad_flags |= BFAD_HAL_START_DONE;
 935         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 936
 937         if (bfad->im)
 938                 flush_workqueue(bfad->im->drv_workq);
 939 }
 940
 941 void
 942 bfad_fcs_stop(struct bfad_s *bfad)
 943 {
 944         unsigned long   flags;
 945
 946         spin_lock_irqsave(&bfad->bfad_lock, flags);
 947         init_completion(&bfad->comp);
 948         bfad->pport.flags |= BFAD_PORT_DELETE;
 949         bfa_fcs_exit(&bfad->bfa_fcs);
 950         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 951         wait_for_completion(&bfad->comp);
 952
 953         bfa_sm_send_event(bfad, BFAD_E_FCS_EXIT_COMP);
 954 }
 955
 956 void
 957 bfad_stop(struct bfad_s *bfad)
 958 {
 959         unsigned long   flags;
 960
 961         spin_lock_irqsave(&bfad->bfad_lock, flags);
 962         init_completion(&bfad->comp);
 963         bfa_iocfc_stop(&bfad->bfa);
 964         bfad->bfad_flags &= ~BFAD_HAL_START_DONE;
 965         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 966         wait_for_completion(&bfad->comp);
 967
 968         bfa_sm_send_event(bfad, BFAD_E_EXIT_COMP);
 969 }
 970
 971 bfa_status_t
 972 bfad_cfg_pport(struct bfad_s *bfad, enum bfa_lport_role role)
 973 {
 974         int             rc = BFA_STATUS_OK;
 975
 976         /* Allocate scsi_host for the physical port */
 977         if ((supported_fc4s & BFA_LPORT_ROLE_FCP_IM) &&
 978             (role & BFA_LPORT_ROLE_FCP_IM)) {
 979                 if (bfad->pport.im_port == NULL) {
 980                         rc = BFA_STATUS_FAILED;
 981                         goto out;
 982                 }
 983
 984                 rc = bfad_im_scsi_host_alloc(bfad, bfad->pport.im_port,
 985                                                 &bfad->pcidev->dev);
 986                 if (rc != BFA_STATUS_OK)
 987                         goto out;
 988
 989                 bfad->pport.roles |= BFA_LPORT_ROLE_FCP_IM;
 990         }
 991
 992         bfad->bfad_flags |= BFAD_CFG_PPORT_DONE;
 993
 994 out:
 995         return rc;
 996 }
 997
 998 void
 999 bfad_uncfg_pport(struct bfad_s *bfad)
1000 {
1001         if ((supported_fc4s & BFA_LPORT_ROLE_FCP_IM) &&
1002             (bfad->pport.roles & BFA_LPORT_ROLE_FCP_IM)) {
1003                 bfad_im_scsi_host_free(bfad, bfad->pport.im_port);
1004                 bfad_im_port_clean(bfad->pport.im_port);
1005                 kfree(bfad->pport.im_port);
1006                 bfad->pport.roles &= ~BFA_LPORT_ROLE_FCP_IM;
1007         }
1008
1009         bfad->bfad_flags &= ~BFAD_CFG_PPORT_DONE;
1010 }
1011
1012 bfa_status_t
1013 bfad_start_ops(struct bfad_s *bfad) {
1014
1015         int     retval;
1016         unsigned long   flags;
1017         struct bfad_vport_s *vport, *vport_new;
1018         struct bfa_fcs_driver_info_s driver_info;
1019
1020         /* Limit min/max. xfer size to [64k-32MB] */
1021         if (max_xfer_size < BFAD_MIN_SECTORS >> 1)
1022                 max_xfer_size = BFAD_MIN_SECTORS >> 1;
1023         if (max_xfer_size > BFAD_MAX_SECTORS >> 1)
1024                 max_xfer_size = BFAD_MAX_SECTORS >> 1;
1025
1026         /* Fill the driver_info info to fcs*/
1027         memset(&driver_info, 0, sizeof(driver_info));
1028         strncpy(driver_info.version, BFAD_DRIVER_VERSION,
1029                 sizeof(driver_info.version) - 1);
1030         if (host_name)
1031                 strncpy(driver_info.host_machine_name, host_name,
1032                         sizeof(driver_info.host_machine_name) - 1);
1033         if (os_name)
1034                 strncpy(driver_info.host_os_name, os_name,
1035                         sizeof(driver_info.host_os_name) - 1);
1036         if (os_patch)
1037                 strncpy(driver_info.host_os_patch, os_patch,
1038                         sizeof(driver_info.host_os_patch) - 1);
1039
1040         strncpy(driver_info.os_device_name, bfad->pci_name,
1041                 sizeof(driver_info.os_device_name - 1));
1042
1043         /* FCS driver info init */
1044         spin_lock_irqsave(&bfad->bfad_lock, flags);
1045         bfa_fcs_driver_info_init(&bfad->bfa_fcs, &driver_info);
1046         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1047
1048         /*
1049          * FCS update cfg - reset the pwwn/nwwn of fabric base logical port
1050          * with values learned during bfa_init firmware GETATTR REQ.
1051          */
1052         bfa_fcs_update_cfg(&bfad->bfa_fcs);
1053
1054         /* Setup fc host fixed attribute if the lk supports */
1055         bfad_fc_host_init(bfad->pport.im_port);
1056
1057         /* BFAD level FC4 IM specific resource allocation */
1058         retval = bfad_im_probe(bfad);
1059         if (retval != BFA_STATUS_OK) {
1060                 printk(KERN_WARNING "bfad_im_probe failed\n");
1061                 if (bfa_sm_cmp_state(bfad, bfad_sm_initializing))
1062                         bfa_sm_set_state(bfad, bfad_sm_failed);
1063                 bfad_im_probe_undo(bfad);
1064                 bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
1065                 bfad_uncfg_pport(bfad);
1066                 bfad_stop(bfad);
1067                 return BFA_STATUS_FAILED;
1068         } else
1069                 bfad->bfad_flags |= BFAD_FC4_PROBE_DONE;
1070
1071         bfad_drv_start(bfad);
1072
1073         /* Complete pbc vport create */
1074         list_for_each_entry_safe(vport, vport_new, &bfad->pbc_vport_list,
1075                                 list_entry) {
1076                 struct fc_vport_identifiers vid;
1077                 struct fc_vport *fc_vport;
1078                 char pwwn_buf[BFA_STRING_32];
1079
1080                 memset(&vid, 0, sizeof(vid));
1081                 vid.roles = FC_PORT_ROLE_FCP_INITIATOR;
1082                 vid.vport_type = FC_PORTTYPE_NPIV;
1083                 vid.disable = false;
1084                 vid.node_name = wwn_to_u64((u8 *)
1085                                 (&((vport->fcs_vport).lport.port_cfg.nwwn)));
1086                 vid.port_name = wwn_to_u64((u8 *)
1087                                 (&((vport->fcs_vport).lport.port_cfg.pwwn)));
1088                 fc_vport = fc_vport_create(bfad->pport.im_port->shost, 0, &vid);
1089                 if (!fc_vport) {
1090                         wwn2str(pwwn_buf, vid.port_name);
1091                         printk(KERN_WARNING "bfad%d: failed to create pbc vport"
1092                                 " %s\n", bfad->inst_no, pwwn_buf);
1093                 }
1094                 list_del(&vport->list_entry);
1095                 kfree(vport);
1096         }
1097
1098         /*
1099          * If bfa_linkup_delay is set to -1 default; try to retrive the
1100          * value using the bfad_get_linkup_delay(); else use the
1101          * passed in module param value as the bfa_linkup_delay.
1102          */
1103         if (bfa_linkup_delay < 0) {
1104                 bfa_linkup_delay = bfad_get_linkup_delay(bfad);
1105                 bfad_rport_online_wait(bfad);
1106                 bfa_linkup_delay = -1;
1107         } else
1108                 bfad_rport_online_wait(bfad);
1109
1110         BFA_LOG(KERN_INFO, bfad, bfa_log_level, "bfa device claimed\n");
1111
1112         return BFA_STATUS_OK;
1113 }
1114
1115 int
1116 bfad_worker(void *ptr)
1117 {
1118         struct bfad_s *bfad;
1119         unsigned long   flags;
1120
1121         bfad = (struct bfad_s *)ptr;
1122
1123         while (!kthread_should_stop()) {
1124
1125                 /* Send event BFAD_E_INIT_SUCCESS */
1126                 bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
1127
1128                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1129                 bfad->bfad_tsk = NULL;
1130                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1131
1132                 break;
1133         }
1134
1135         return 0;
1136 }
1137
1138 /*
1139  *  BFA driver interrupt functions
1140  */
1141 irqreturn_t
1142 bfad_intx(int irq, void *dev_id)
1143 {
1144         struct bfad_s   *bfad = dev_id;
1145         struct list_head        doneq;
1146         unsigned long   flags;
1147         bfa_boolean_t rc;
1148
1149         spin_lock_irqsave(&bfad->bfad_lock, flags);
1150         rc = bfa_intx(&bfad->bfa);
1151         if (!rc) {
1152                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1153                 return IRQ_NONE;
1154         }
1155
1156         bfa_comp_deq(&bfad->bfa, &doneq);
1157         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1158
1159         if (!list_empty(&doneq)) {
1160                 bfa_comp_process(&bfad->bfa, &doneq);
1161
1162                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1163                 bfa_comp_free(&bfad->bfa, &doneq);
1164                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1165         }
1166
1167         return IRQ_HANDLED;
1168
1169 }
1170
1171 static irqreturn_t
1172 bfad_msix(int irq, void *dev_id)
1173 {
1174         struct bfad_msix_s *vec = dev_id;
1175         struct bfad_s *bfad = vec->bfad;
1176         struct list_head doneq;
1177         unsigned long   flags;
1178
1179         spin_lock_irqsave(&bfad->bfad_lock, flags);
1180
1181         bfa_msix(&bfad->bfa, vec->msix.entry);
1182         bfa_comp_deq(&bfad->bfa, &doneq);
1183         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1184
1185         if (!list_empty(&doneq)) {
1186                 bfa_comp_process(&bfad->bfa, &doneq);
1187
1188                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1189                 bfa_comp_free(&bfad->bfa, &doneq);
1190                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1191         }
1192
1193         return IRQ_HANDLED;
1194 }
1195
1196 /*
1197  * Initialize the MSIX entry table.
1198  */
1199 static void
1200 bfad_init_msix_entry(struct bfad_s *bfad, struct msix_entry *msix_entries,
1201                          int mask, int max_bit)
1202 {
1203         int     i;
1204         int     match = 0x00000001;
1205
1206         for (i = 0, bfad->nvec = 0; i < MAX_MSIX_ENTRY; i++) {
1207                 if (mask & match) {
1208                         bfad->msix_tab[bfad->nvec].msix.entry = i;
1209                         bfad->msix_tab[bfad->nvec].bfad = bfad;
1210                         msix_entries[bfad->nvec].entry = i;
1211                         bfad->nvec++;
1212                 }
1213
1214                 match <<= 1;
1215         }
1216
1217 }
1218
1219 int
1220 bfad_install_msix_handler(struct bfad_s *bfad)
1221 {
1222         int i, error = 0;
1223
1224         for (i = 0; i < bfad->nvec; i++) {
1225                 sprintf(bfad->msix_tab[i].name, "bfa-%s-%s",
1226                                 bfad->pci_name,
1227                                 ((bfa_asic_id_cb(bfad->hal_pcidev.device_id)) ?
1228                                 msix_name_cb[i] : msix_name_ct[i]));
1229
1230                 error = request_irq(bfad->msix_tab[i].msix.vector,
1231                                     (irq_handler_t) bfad_msix, 0,
1232                                     bfad->msix_tab[i].name, &bfad->msix_tab[i]);
1233                 bfa_trc(bfad, i);
1234                 bfa_trc(bfad, bfad->msix_tab[i].msix.vector);
1235                 if (error) {
1236                         int     j;
1237
1238                         for (j = 0; j < i; j++)
1239                                 free_irq(bfad->msix_tab[j].msix.vector,
1240                                                 &bfad->msix_tab[j]);
1241
1242                         bfad->bfad_flags &= ~BFAD_MSIX_ON;
1243                         pci_disable_msix(bfad->pcidev);
1244
1245                         return 1;
1246                 }
1247         }
1248
1249         return 0;
1250 }
1251
1252 /*
1253  * Setup MSIX based interrupt.
1254  */
1255 int
1256 bfad_setup_intr(struct bfad_s *bfad)
1257 {
1258         int error = 0;
1259         u32 mask = 0, i, num_bit = 0, max_bit = 0;
1260         struct msix_entry msix_entries[MAX_MSIX_ENTRY];
1261         struct pci_dev *pdev = bfad->pcidev;
1262         u16     reg;
1263
1264         /* Call BFA to get the msix map for this PCI function.  */
1265         bfa_msix_getvecs(&bfad->bfa, &mask, &num_bit, &max_bit);
1266
1267         /* Set up the msix entry table */
1268         bfad_init_msix_entry(bfad, msix_entries, mask, max_bit);
1269
1270         if ((bfa_asic_id_ctc(pdev->device) && !msix_disable_ct) ||
1271            (bfa_asic_id_cb(pdev->device) && !msix_disable_cb)) {
1272
1273                 error = pci_enable_msix(bfad->pcidev, msix_entries, bfad->nvec);
1274                 if (error) {
1275                         /*
1276                          * Only error number of vector is available.
1277                          * We don't have a mechanism to map multiple
1278                          * interrupts into one vector, so even if we
1279                          * can try to request less vectors, we don't
1280                          * know how to associate interrupt events to
1281                          *  vectors. Linux doesn't duplicate vectors
1282                          * in the MSIX table for this case.
1283                          */
1284
1285                         printk(KERN_WARNING "bfad%d: "
1286                                 "pci_enable_msix failed (%d),"
1287                                 " use line based.\n", bfad->inst_no, error);
1288
1289                         goto line_based;
1290                 }
1291
1292                 /* Disable INTX in MSI-X mode */
1293                 pci_read_config_word(pdev, PCI_COMMAND, &reg);
1294
1295                 if (!(reg & PCI_COMMAND_INTX_DISABLE))
1296                         pci_write_config_word(pdev, PCI_COMMAND,
1297                                 reg | PCI_COMMAND_INTX_DISABLE);
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         bfad->bfad_flags |= BFAD_INTX_ON;
1321
1322         return error;
1323 }
1324
1325 void
1326 bfad_remove_intr(struct bfad_s *bfad)
1327 {
1328         int     i;
1329
1330         if (bfad->bfad_flags & BFAD_MSIX_ON) {
1331                 for (i = 0; i < bfad->nvec; i++)
1332                         free_irq(bfad->msix_tab[i].msix.vector,
1333                                         &bfad->msix_tab[i]);
1334
1335                 pci_disable_msix(bfad->pcidev);
1336                 bfad->bfad_flags &= ~BFAD_MSIX_ON;
1337         } else if (bfad->bfad_flags & BFAD_INTX_ON) {
1338                 free_irq(bfad->pcidev->irq, bfad);
1339         }
1340 }
1341
1342 /*
1343  * PCI probe entry.
1344  */
1345 int
1346 bfad_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid)
1347 {
1348         struct bfad_s   *bfad;
1349         int             error = -ENODEV, retval, i;
1350
1351         /* For single port cards - only claim function 0 */
1352         if ((pdev->device == BFA_PCI_DEVICE_ID_FC_8G1P) &&
1353                 (PCI_FUNC(pdev->devfn) != 0))
1354                 return -ENODEV;
1355
1356         bfad = kzalloc(sizeof(struct bfad_s), GFP_KERNEL);
1357         if (!bfad) {
1358                 error = -ENOMEM;
1359                 goto out;
1360         }
1361
1362         bfad->trcmod = kzalloc(sizeof(struct bfa_trc_mod_s), GFP_KERNEL);
1363         if (!bfad->trcmod) {
1364                 printk(KERN_WARNING "Error alloc trace buffer!\n");
1365                 error = -ENOMEM;
1366                 goto out_alloc_trace_failure;
1367         }
1368
1369         /* TRACE INIT */
1370         bfa_trc_init(bfad->trcmod);
1371         bfa_trc(bfad, bfad_inst);
1372
1373         /* AEN INIT */
1374         INIT_LIST_HEAD(&bfad->free_aen_q);
1375         INIT_LIST_HEAD(&bfad->active_aen_q);
1376         for (i = 0; i < BFA_AEN_MAX_ENTRY; i++)
1377                 list_add_tail(&bfad->aen_list[i].qe, &bfad->free_aen_q);
1378
1379         if (!(bfad_load_fwimg(pdev))) {
1380                 kfree(bfad->trcmod);
1381                 goto out_alloc_trace_failure;
1382         }
1383
1384         retval = bfad_pci_init(pdev, bfad);
1385         if (retval) {
1386                 printk(KERN_WARNING "bfad_pci_init failure!\n");
1387                 error = retval;
1388                 goto out_pci_init_failure;
1389         }
1390
1391         mutex_lock(&bfad_mutex);
1392         bfad->inst_no = bfad_inst++;
1393         list_add_tail(&bfad->list_entry, &bfad_list);
1394         mutex_unlock(&bfad_mutex);
1395
1396         /* Initializing the state machine: State set to uninit */
1397         bfa_sm_set_state(bfad, bfad_sm_uninit);
1398
1399         spin_lock_init(&bfad->bfad_lock);
1400         pci_set_drvdata(pdev, bfad);
1401
1402         bfad->ref_count = 0;
1403         bfad->pport.bfad = bfad;
1404         INIT_LIST_HEAD(&bfad->pbc_vport_list);
1405
1406         /* Setup the debugfs node for this bfad */
1407         if (bfa_debugfs_enable)
1408                 bfad_debugfs_init(&bfad->pport);
1409
1410         retval = bfad_drv_init(bfad);
1411         if (retval != BFA_STATUS_OK)
1412                 goto out_drv_init_failure;
1413
1414         bfa_sm_send_event(bfad, BFAD_E_CREATE);
1415
1416         if (bfa_sm_cmp_state(bfad, bfad_sm_uninit))
1417                 goto out_bfad_sm_failure;
1418
1419         return 0;
1420
1421 out_bfad_sm_failure:
1422         bfa_detach(&bfad->bfa);
1423         bfad_hal_mem_release(bfad);
1424 out_drv_init_failure:
1425         /* Remove the debugfs node for this bfad */
1426         kfree(bfad->regdata);
1427         bfad_debugfs_exit(&bfad->pport);
1428         mutex_lock(&bfad_mutex);
1429         bfad_inst--;
1430         list_del(&bfad->list_entry);
1431         mutex_unlock(&bfad_mutex);
1432         bfad_pci_uninit(pdev, bfad);
1433 out_pci_init_failure:
1434         kfree(bfad->trcmod);
1435 out_alloc_trace_failure:
1436         kfree(bfad);
1437 out:
1438         return error;
1439 }
1440
1441 /*
1442  * PCI remove entry.
1443  */
1444 void
1445 bfad_pci_remove(struct pci_dev *pdev)
1446 {
1447         struct bfad_s         *bfad = pci_get_drvdata(pdev);
1448         unsigned long   flags;
1449
1450         bfa_trc(bfad, bfad->inst_no);
1451
1452         spin_lock_irqsave(&bfad->bfad_lock, flags);
1453         if (bfad->bfad_tsk != NULL) {
1454                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1455                 kthread_stop(bfad->bfad_tsk);
1456         } else {
1457                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1458         }
1459
1460         /* Send Event BFAD_E_STOP */
1461         bfa_sm_send_event(bfad, BFAD_E_STOP);
1462
1463         /* Driver detach and dealloc mem */
1464         spin_lock_irqsave(&bfad->bfad_lock, flags);
1465         bfa_detach(&bfad->bfa);
1466         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1467         bfad_hal_mem_release(bfad);
1468
1469         /* Remove the debugfs node for this bfad */
1470         kfree(bfad->regdata);
1471         bfad_debugfs_exit(&bfad->pport);
1472
1473         /* Cleaning the BFAD instance */
1474         mutex_lock(&bfad_mutex);
1475         bfad_inst--;
1476         list_del(&bfad->list_entry);
1477         mutex_unlock(&bfad_mutex);
1478         bfad_pci_uninit(pdev, bfad);
1479
1480         kfree(bfad->trcmod);
1481         kfree(bfad);
1482 }
1483
1484 struct pci_device_id bfad_id_table[] = {
1485         {
1486                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1487                 .device = BFA_PCI_DEVICE_ID_FC_8G2P,
1488                 .subvendor = PCI_ANY_ID,
1489                 .subdevice = PCI_ANY_ID,
1490         },
1491         {
1492                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1493                 .device = BFA_PCI_DEVICE_ID_FC_8G1P,
1494                 .subvendor = PCI_ANY_ID,
1495                 .subdevice = PCI_ANY_ID,
1496         },
1497         {
1498                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1499                 .device = BFA_PCI_DEVICE_ID_CT,
1500                 .subvendor = PCI_ANY_ID,
1501                 .subdevice = PCI_ANY_ID,
1502                 .class = (PCI_CLASS_SERIAL_FIBER << 8),
1503                 .class_mask = ~0,
1504         },
1505         {
1506                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1507                 .device = BFA_PCI_DEVICE_ID_CT_FC,
1508                 .subvendor = PCI_ANY_ID,
1509                 .subdevice = PCI_ANY_ID,
1510                 .class = (PCI_CLASS_SERIAL_FIBER << 8),
1511                 .class_mask = ~0,
1512         },
1513         {
1514                 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1515                 .device = BFA_PCI_DEVICE_ID_CT2,
1516                 .subvendor = PCI_ANY_ID,
1517                 .subdevice = PCI_ANY_ID,
1518                 .class = (PCI_CLASS_SERIAL_FIBER << 8),
1519                 .class_mask = ~0,
1520         },
1521
1522         {0, 0},
1523 };
1524
1525 MODULE_DEVICE_TABLE(pci, bfad_id_table);
1526
1527 static struct pci_driver bfad_pci_driver = {
1528         .name = BFAD_DRIVER_NAME,
1529         .id_table = bfad_id_table,
1530         .probe = bfad_pci_probe,
1531         .remove = __devexit_p(bfad_pci_remove),
1532 };
1533
1534 /*
1535  * Driver module init.
1536  */
1537 static int __init
1538 bfad_init(void)
1539 {
1540         int             error = 0;
1541
1542         printk(KERN_INFO "Brocade BFA FC/FCOE SCSI driver - version: %s\n",
1543                         BFAD_DRIVER_VERSION);
1544
1545         if (num_sgpgs > 0)
1546                 num_sgpgs_parm = num_sgpgs;
1547
1548         error = bfad_im_module_init();
1549         if (error) {
1550                 error = -ENOMEM;
1551                 printk(KERN_WARNING "bfad_im_module_init failure\n");
1552                 goto ext;
1553         }
1554
1555         if (strcmp(FCPI_NAME, " fcpim") == 0)
1556                 supported_fc4s |= BFA_LPORT_ROLE_FCP_IM;
1557
1558         bfa_auto_recover = ioc_auto_recover;
1559         bfa_fcs_rport_set_del_timeout(rport_del_timeout);
1560
1561         error = pci_register_driver(&bfad_pci_driver);
1562         if (error) {
1563                 printk(KERN_WARNING "pci_register_driver failure\n");
1564                 goto ext;
1565         }
1566
1567         return 0;
1568
1569 ext:
1570         bfad_im_module_exit();
1571         return error;
1572 }
1573
1574 /*
1575  * Driver module exit.
1576  */
1577 static void __exit
1578 bfad_exit(void)
1579 {
1580         pci_unregister_driver(&bfad_pci_driver);
1581         bfad_im_module_exit();
1582         bfad_free_fwimg();
1583 }
1584
1585 /* Firmware handling */
1586 static void
1587 bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
1588                 u32 *bfi_image_size, char *fw_name)
1589 {
1590         const struct firmware *fw;
1591
1592         if (reject_firmware(&fw, fw_name, &pdev->dev)) {
1593                 printk(KERN_ALERT "Can't locate firmware %s\n", fw_name);
1594                 *bfi_image = NULL;
1595                 goto out;
1596         }
1597
1598         *bfi_image = vmalloc(fw->size);
1599         if (NULL == *bfi_image) {
1600                 printk(KERN_ALERT "Fail to allocate buffer for fw image "
1601                         "size=%x!\n", (u32) fw->size);
1602                 goto out;
1603         }
1604
1605         memcpy(*bfi_image, fw->data, fw->size);
1606         *bfi_image_size = fw->size/sizeof(u32);
1607 out:
1608         release_firmware(fw);
1609 }
1610
1611 static u32 *
1612 bfad_load_fwimg(struct pci_dev *pdev)
1613 {
1614         if (bfa_asic_id_ct2(pdev->device)) {
1615                 if (bfi_image_ct2_size == 0)
1616                         bfad_read_firmware(pdev, &bfi_image_ct2,
1617                                 &bfi_image_ct2_size, BFAD_FW_FILE_CT2);
1618                 return bfi_image_ct2;
1619         } else if (bfa_asic_id_ct(pdev->device)) {
1620                 if (bfi_image_ct_size == 0)
1621                         bfad_read_firmware(pdev, &bfi_image_ct,
1622                                 &bfi_image_ct_size, BFAD_FW_FILE_CT);
1623                 return bfi_image_ct;
1624         } else if (bfa_asic_id_cb(pdev->device)) {
1625                 if (bfi_image_cb_size == 0)
1626                         bfad_read_firmware(pdev, &bfi_image_cb,
1627                                 &bfi_image_cb_size, BFAD_FW_FILE_CB);
1628                 return bfi_image_cb;
1629         }
1630
1631         return NULL;
1632 }
1633
1634 static void
1635 bfad_free_fwimg(void)
1636 {
1637         if (bfi_image_ct2_size && bfi_image_ct2)
1638                 vfree(bfi_image_ct2);
1639         if (bfi_image_ct_size && bfi_image_ct)
1640                 vfree(bfi_image_ct);
1641         if (bfi_image_cb_size && bfi_image_cb)
1642                 vfree(bfi_image_cb);
1643 }
1644
1645 module_init(bfad_init);
1646 module_exit(bfad_exit);
1647 MODULE_LICENSE("GPL");
1648 MODULE_DESCRIPTION("Brocade Fibre Channel HBA Driver" BFAD_PROTO_NAME);
1649 MODULE_AUTHOR("Brocade Communications Systems, Inc.");
1650 MODULE_VERSION(BFAD_DRIVER_VERSION);