drivers/net/bna/bfa_ioc.c

   1 /*
   2  * Linux network driver for Brocade Converged Network Adapter.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License (GPL) Version 2 as
   6  * published by the Free Software Foundation
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  */
  13 /*
  14  * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
  15  * All rights reserved
  16  * www.brocade.com
  17  */
  18
  19 #include "bfa_ioc.h"
  20 #include "cna.h"
  21 #include "bfi.h"
  22 #include "bfi_ctreg.h"
  23 #include "bfa_defs.h"
  24
  25 /**
  26  * IOC local definitions
  27  */
  28
  29 /**
  30  * Asic specific macros : see bfa_hw_cb.c and bfa_hw_ct.c for details.
  31  */
  32
  33 #define bfa_ioc_firmware_lock(__ioc)                    \
  34                         ((__ioc)->ioc_hwif->ioc_firmware_lock(__ioc))
  35 #define bfa_ioc_firmware_unlock(__ioc)                  \
  36                         ((__ioc)->ioc_hwif->ioc_firmware_unlock(__ioc))
  37 #define bfa_ioc_reg_init(__ioc) ((__ioc)->ioc_hwif->ioc_reg_init(__ioc))
  38 #define bfa_ioc_map_port(__ioc) ((__ioc)->ioc_hwif->ioc_map_port(__ioc))
  39 #define bfa_ioc_notify_fail(__ioc)                      \
  40                         ((__ioc)->ioc_hwif->ioc_notify_fail(__ioc))
  41 #define bfa_ioc_sync_start(__ioc)               \
  42                         ((__ioc)->ioc_hwif->ioc_sync_start(__ioc))
  43 #define bfa_ioc_sync_join(__ioc)                        \
  44                         ((__ioc)->ioc_hwif->ioc_sync_join(__ioc))
  45 #define bfa_ioc_sync_leave(__ioc)                       \
  46                         ((__ioc)->ioc_hwif->ioc_sync_leave(__ioc))
  47 #define bfa_ioc_sync_ack(__ioc)                         \
  48                         ((__ioc)->ioc_hwif->ioc_sync_ack(__ioc))
  49 #define bfa_ioc_sync_complete(__ioc)                    \
  50                         ((__ioc)->ioc_hwif->ioc_sync_complete(__ioc))
  51
  52 #define bfa_ioc_mbox_cmd_pending(__ioc)         \
  53                         (!list_empty(&((__ioc)->mbox_mod.cmd_q)) || \
  54                         readl((__ioc)->ioc_regs.hfn_mbox_cmd))
  55
  56 static bool bfa_nw_auto_recover = true;
  57
  58 /*
  59  * forward declarations
  60  */
  61 static void bfa_ioc_hw_sem_get(struct bfa_ioc *ioc);
  62 static void bfa_ioc_hw_sem_get_cancel(struct bfa_ioc *ioc);
  63 static void bfa_ioc_hwinit(struct bfa_ioc *ioc, bool force);
  64 static void bfa_ioc_send_enable(struct bfa_ioc *ioc);
  65 static void bfa_ioc_send_disable(struct bfa_ioc *ioc);
  66 static void bfa_ioc_send_getattr(struct bfa_ioc *ioc);
  67 static void bfa_ioc_hb_monitor(struct bfa_ioc *ioc);
  68 static void bfa_ioc_hb_stop(struct bfa_ioc *ioc);
  69 static void bfa_ioc_reset(struct bfa_ioc *ioc, bool force);
  70 static void bfa_ioc_mbox_poll(struct bfa_ioc *ioc);
  71 static void bfa_ioc_mbox_hbfail(struct bfa_ioc *ioc);
  72 static void bfa_ioc_recover(struct bfa_ioc *ioc);
  73 static void bfa_ioc_check_attr_wwns(struct bfa_ioc *ioc);
  74 static void bfa_ioc_disable_comp(struct bfa_ioc *ioc);
  75 static void bfa_ioc_lpu_stop(struct bfa_ioc *ioc);
  76 static void bfa_ioc_fail_notify(struct bfa_ioc *ioc);
  77 static void bfa_ioc_pf_enabled(struct bfa_ioc *ioc);
  78 static void bfa_ioc_pf_disabled(struct bfa_ioc *ioc);
  79 static void bfa_ioc_pf_initfailed(struct bfa_ioc *ioc);
  80 static void bfa_ioc_pf_failed(struct bfa_ioc *ioc);
  81 static void bfa_ioc_pf_fwmismatch(struct bfa_ioc *ioc);
  82 static void bfa_ioc_boot(struct bfa_ioc *ioc, u32 boot_type,
  83                          u32 boot_param);
  84 static u32 bfa_ioc_smem_pgnum(struct bfa_ioc *ioc, u32 fmaddr);
  85 static u32 bfa_ioc_smem_pgoff(struct bfa_ioc *ioc, u32 fmaddr);
  86 static void bfa_ioc_get_adapter_serial_num(struct bfa_ioc *ioc,
  87                                                 char *serial_num);
  88 static void bfa_ioc_get_adapter_fw_ver(struct bfa_ioc *ioc,
  89                                                 char *fw_ver);
  90 static void bfa_ioc_get_pci_chip_rev(struct bfa_ioc *ioc,
  91                                                 char *chip_rev);
  92 static void bfa_ioc_get_adapter_optrom_ver(struct bfa_ioc *ioc,
  93                                                 char *optrom_ver);
  94 static void bfa_ioc_get_adapter_manufacturer(struct bfa_ioc *ioc,
  95                                                 char *manufacturer);
  96 static void bfa_ioc_get_adapter_model(struct bfa_ioc *ioc, char *model);
  97 static u64 bfa_ioc_get_pwwn(struct bfa_ioc *ioc);
  98
  99 /**
 100  * IOC state machine definitions/declarations
 101  */
 102 enum ioc_event {
 103         IOC_E_RESET             = 1,    /*!< IOC reset request          */
 104         IOC_E_ENABLE            = 2,    /*!< IOC enable request         */
 105         IOC_E_DISABLE           = 3,    /*!< IOC disable request        */
 106         IOC_E_DETACH            = 4,    /*!< driver detach cleanup      */
 107         IOC_E_ENABLED           = 5,    /*!< f/w enabled                */
 108         IOC_E_FWRSP_GETATTR     = 6,    /*!< IOC get attribute response */
 109         IOC_E_DISABLED          = 7,    /*!< f/w disabled               */
 110         IOC_E_INITFAILED        = 8,    /*!< failure notice by iocpf sm */
 111         IOC_E_PFAILED           = 9,    /*!< failure notice by iocpf sm */
 112         IOC_E_HBFAIL            = 10,   /*!< heartbeat failure          */
 113         IOC_E_HWERROR           = 11,   /*!< hardware error interrupt   */
 114         IOC_E_TIMEOUT           = 12,   /*!< timeout                    */
 115 };
 116
 117 bfa_fsm_state_decl(bfa_ioc, uninit, struct bfa_ioc, enum ioc_event);
 118 bfa_fsm_state_decl(bfa_ioc, reset, struct bfa_ioc, enum ioc_event);
 119 bfa_fsm_state_decl(bfa_ioc, enabling, struct bfa_ioc, enum ioc_event);
 120 bfa_fsm_state_decl(bfa_ioc, getattr, struct bfa_ioc, enum ioc_event);
 121 bfa_fsm_state_decl(bfa_ioc, op, struct bfa_ioc, enum ioc_event);
 122 bfa_fsm_state_decl(bfa_ioc, fail_retry, struct bfa_ioc, enum ioc_event);
 123 bfa_fsm_state_decl(bfa_ioc, fail, struct bfa_ioc, enum ioc_event);
 124 bfa_fsm_state_decl(bfa_ioc, disabling, struct bfa_ioc, enum ioc_event);
 125 bfa_fsm_state_decl(bfa_ioc, disabled, struct bfa_ioc, enum ioc_event);
 126
 127 static struct bfa_sm_table ioc_sm_table[] = {
 128         {BFA_SM(bfa_ioc_sm_uninit), BFA_IOC_UNINIT},
 129         {BFA_SM(bfa_ioc_sm_reset), BFA_IOC_RESET},
 130         {BFA_SM(bfa_ioc_sm_enabling), BFA_IOC_ENABLING},
 131         {BFA_SM(bfa_ioc_sm_getattr), BFA_IOC_GETATTR},
 132         {BFA_SM(bfa_ioc_sm_op), BFA_IOC_OPERATIONAL},
 133         {BFA_SM(bfa_ioc_sm_fail_retry), BFA_IOC_INITFAIL},
 134         {BFA_SM(bfa_ioc_sm_fail), BFA_IOC_FAIL},
 135         {BFA_SM(bfa_ioc_sm_disabling), BFA_IOC_DISABLING},
 136         {BFA_SM(bfa_ioc_sm_disabled), BFA_IOC_DISABLED},
 137 };
 138
 139 /**
 140  * IOCPF state machine definitions/declarations
 141  */
 142
 143 /*
 144  * Forward declareations for iocpf state machine
 145  */
 146 static void bfa_iocpf_enable(struct bfa_ioc *ioc);
 147 static void bfa_iocpf_disable(struct bfa_ioc *ioc);
 148 static void bfa_iocpf_fail(struct bfa_ioc *ioc);
 149 static void bfa_iocpf_initfail(struct bfa_ioc *ioc);
 150 static void bfa_iocpf_getattrfail(struct bfa_ioc *ioc);
 151 static void bfa_iocpf_stop(struct bfa_ioc *ioc);
 152
 153 /**
 154  * IOCPF state machine events
 155  */
 156 enum iocpf_event {
 157         IOCPF_E_ENABLE          = 1,    /*!< IOCPF enable request       */
 158         IOCPF_E_DISABLE         = 2,    /*!< IOCPF disable request      */
 159         IOCPF_E_STOP            = 3,    /*!< stop on driver detach      */
 160         IOCPF_E_FWREADY         = 4,    /*!< f/w initialization done    */
 161         IOCPF_E_FWRSP_ENABLE    = 5,    /*!< enable f/w response        */
 162         IOCPF_E_FWRSP_DISABLE   = 6,    /*!< disable f/w response       */
 163         IOCPF_E_FAIL            = 7,    /*!< failure notice by ioc sm   */
 164         IOCPF_E_INITFAIL        = 8,    /*!< init fail notice by ioc sm */
 165         IOCPF_E_GETATTRFAIL     = 9,    /*!< init fail notice by ioc sm */
 166         IOCPF_E_SEMLOCKED       = 10,   /*!< h/w semaphore is locked    */
 167         IOCPF_E_TIMEOUT         = 11,   /*!< f/w response timeout       */
 168 };
 169
 170 /**
 171  * IOCPF states
 172  */
 173 enum bfa_iocpf_state {
 174         BFA_IOCPF_RESET         = 1,    /*!< IOC is in reset state */
 175         BFA_IOCPF_SEMWAIT       = 2,    /*!< Waiting for IOC h/w semaphore */
 176         BFA_IOCPF_HWINIT        = 3,    /*!< IOC h/w is being initialized */
 177         BFA_IOCPF_READY         = 4,    /*!< IOCPF is initialized */
 178         BFA_IOCPF_INITFAIL      = 5,    /*!< IOCPF failed */
 179         BFA_IOCPF_FAIL          = 6,    /*!< IOCPF failed */
 180         BFA_IOCPF_DISABLING     = 7,    /*!< IOCPF is being disabled */
 181         BFA_IOCPF_DISABLED      = 8,    /*!< IOCPF is disabled */
 182         BFA_IOCPF_FWMISMATCH    = 9,    /*!< IOC f/w different from drivers */
 183 };
 184
 185 bfa_fsm_state_decl(bfa_iocpf, reset, struct bfa_iocpf, enum iocpf_event);
 186 bfa_fsm_state_decl(bfa_iocpf, fwcheck, struct bfa_iocpf, enum iocpf_event);
 187 bfa_fsm_state_decl(bfa_iocpf, mismatch, struct bfa_iocpf, enum iocpf_event);
 188 bfa_fsm_state_decl(bfa_iocpf, semwait, struct bfa_iocpf, enum iocpf_event);
 189 bfa_fsm_state_decl(bfa_iocpf, hwinit, struct bfa_iocpf, enum iocpf_event);
 190 bfa_fsm_state_decl(bfa_iocpf, enabling, struct bfa_iocpf, enum iocpf_event);
 191 bfa_fsm_state_decl(bfa_iocpf, ready, struct bfa_iocpf, enum iocpf_event);
 192 bfa_fsm_state_decl(bfa_iocpf, initfail_sync, struct bfa_iocpf,
 193                                                 enum iocpf_event);
 194 bfa_fsm_state_decl(bfa_iocpf, initfail, struct bfa_iocpf, enum iocpf_event);
 195 bfa_fsm_state_decl(bfa_iocpf, fail_sync, struct bfa_iocpf, enum iocpf_event);
 196 bfa_fsm_state_decl(bfa_iocpf, fail, struct bfa_iocpf, enum iocpf_event);
 197 bfa_fsm_state_decl(bfa_iocpf, disabling, struct bfa_iocpf, enum iocpf_event);
 198 bfa_fsm_state_decl(bfa_iocpf, disabling_sync, struct bfa_iocpf,
 199                                                 enum iocpf_event);
 200 bfa_fsm_state_decl(bfa_iocpf, disabled, struct bfa_iocpf, enum iocpf_event);
 201
 202 static struct bfa_sm_table iocpf_sm_table[] = {
 203         {BFA_SM(bfa_iocpf_sm_reset), BFA_IOCPF_RESET},
 204         {BFA_SM(bfa_iocpf_sm_fwcheck), BFA_IOCPF_FWMISMATCH},
 205         {BFA_SM(bfa_iocpf_sm_mismatch), BFA_IOCPF_FWMISMATCH},
 206         {BFA_SM(bfa_iocpf_sm_semwait), BFA_IOCPF_SEMWAIT},
 207         {BFA_SM(bfa_iocpf_sm_hwinit), BFA_IOCPF_HWINIT},
 208         {BFA_SM(bfa_iocpf_sm_enabling), BFA_IOCPF_HWINIT},
 209         {BFA_SM(bfa_iocpf_sm_ready), BFA_IOCPF_READY},
 210         {BFA_SM(bfa_iocpf_sm_initfail_sync), BFA_IOCPF_INITFAIL},
 211         {BFA_SM(bfa_iocpf_sm_initfail), BFA_IOCPF_INITFAIL},
 212         {BFA_SM(bfa_iocpf_sm_fail_sync), BFA_IOCPF_FAIL},
 213         {BFA_SM(bfa_iocpf_sm_fail), BFA_IOCPF_FAIL},
 214         {BFA_SM(bfa_iocpf_sm_disabling), BFA_IOCPF_DISABLING},
 215         {BFA_SM(bfa_iocpf_sm_disabling_sync), BFA_IOCPF_DISABLING},
 216         {BFA_SM(bfa_iocpf_sm_disabled), BFA_IOCPF_DISABLED},
 217 };
 218
 219 /**
 220  * IOC State Machine
 221  */
 222
 223 /**
 224  * Beginning state. IOC uninit state.
 225  */
 226 static void
 227 bfa_ioc_sm_uninit_entry(struct bfa_ioc *ioc)
 228 {
 229 }
 230
 231 /**
 232  * IOC is in uninit state.
 233  */
 234 static void
 235 bfa_ioc_sm_uninit(struct bfa_ioc *ioc, enum ioc_event event)
 236 {
 237         switch (event) {
 238         case IOC_E_RESET:
 239                 bfa_fsm_set_state(ioc, bfa_ioc_sm_reset);
 240                 break;
 241
 242         default:
 243                 bfa_sm_fault(ioc, event);
 244         }
 245 }
 246
 247 /**
 248  * Reset entry actions -- initialize state machine
 249  */
 250 static void
 251 bfa_ioc_sm_reset_entry(struct bfa_ioc *ioc)
 252 {
 253         bfa_fsm_set_state(&ioc->iocpf, bfa_iocpf_sm_reset);
 254 }
 255
 256 /**
 257  * IOC is in reset state.
 258  */
 259 static void
 260 bfa_ioc_sm_reset(struct bfa_ioc *ioc, enum ioc_event event)
 261 {
 262         switch (event) {
 263         case IOC_E_ENABLE:
 264                 bfa_fsm_set_state(ioc, bfa_ioc_sm_enabling);
 265                 break;
 266
 267         case IOC_E_DISABLE:
 268                 bfa_ioc_disable_comp(ioc);
 269                 break;
 270
 271         case IOC_E_DETACH:
 272                 bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
 273                 break;
 274
 275         default:
 276                 bfa_sm_fault(ioc, event);
 277         }
 278 }
 279
 280 static void
 281 bfa_ioc_sm_enabling_entry(struct bfa_ioc *ioc)
 282 {
 283         bfa_iocpf_enable(ioc);
 284 }
 285
 286 /**
 287  * Host IOC function is being enabled, awaiting response from firmware.
 288  * Semaphore is acquired.
 289  */
 290 static void
 291 bfa_ioc_sm_enabling(struct bfa_ioc *ioc, enum ioc_event event)
 292 {
 293         switch (event) {
 294         case IOC_E_ENABLED:
 295                 bfa_fsm_set_state(ioc, bfa_ioc_sm_getattr);
 296                 break;
 297
 298         case IOC_E_PFAILED:
 299                 /* !!! fall through !!! */
 300         case IOC_E_HWERROR:
 301                 ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
 302                 bfa_fsm_set_state(ioc, bfa_ioc_sm_fail_retry);
 303                 if (event != IOC_E_PFAILED)
 304                         bfa_iocpf_initfail(ioc);
 305                 break;
 306
 307         case IOC_E_DISABLE:
 308                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
 309                 break;
 310
 311         case IOC_E_DETACH:
 312                 bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
 313                 bfa_iocpf_stop(ioc);
 314                 break;
 315
 316         case IOC_E_ENABLE:
 317                 break;
 318
 319         default:
 320                 bfa_sm_fault(ioc, event);
 321         }
 322 }
 323
 324 /**
 325  * Semaphore should be acquired for version check.
 326  */
 327 static void
 328 bfa_ioc_sm_getattr_entry(struct bfa_ioc *ioc)
 329 {
 330         mod_timer(&ioc->ioc_timer, jiffies +
 331                 msecs_to_jiffies(BFA_IOC_TOV));
 332         bfa_ioc_send_getattr(ioc);
 333 }
 334
 335 /**
 336  * IOC configuration in progress. Timer is active.
 337  */
 338 static void
 339 bfa_ioc_sm_getattr(struct bfa_ioc *ioc, enum ioc_event event)
 340 {
 341         switch (event) {
 342         case IOC_E_FWRSP_GETATTR:
 343                 del_timer(&ioc->ioc_timer);
 344                 bfa_ioc_check_attr_wwns(ioc);
 345                 bfa_fsm_set_state(ioc, bfa_ioc_sm_op);
 346                 break;
 347
 348         case IOC_E_PFAILED:
 349         case IOC_E_HWERROR:
 350                 del_timer(&ioc->ioc_timer);
 351                 /* fall through */
 352         case IOC_E_TIMEOUT:
 353                 ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
 354                 bfa_fsm_set_state(ioc, bfa_ioc_sm_fail_retry);
 355                 if (event != IOC_E_PFAILED)
 356                         bfa_iocpf_getattrfail(ioc);
 357                 break;
 358
 359         case IOC_E_DISABLE:
 360                 del_timer(&ioc->ioc_timer);
 361                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
 362                 break;
 363
 364         case IOC_E_ENABLE:
 365                 break;
 366
 367         default:
 368                 bfa_sm_fault(ioc, event);
 369         }
 370 }
 371
 372 static void
 373 bfa_ioc_sm_op_entry(struct bfa_ioc *ioc)
 374 {
 375         ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_OK);
 376         bfa_ioc_hb_monitor(ioc);
 377 }
 378
 379 static void
 380 bfa_ioc_sm_op(struct bfa_ioc *ioc, enum ioc_event event)
 381 {
 382         switch (event) {
 383         case IOC_E_ENABLE:
 384                 break;
 385
 386         case IOC_E_DISABLE:
 387                 bfa_ioc_hb_stop(ioc);
 388                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
 389                 break;
 390
 391         case IOC_E_PFAILED:
 392         case IOC_E_HWERROR:
 393                 bfa_ioc_hb_stop(ioc);
 394                 /* !!! fall through !!! */
 395         case IOC_E_HBFAIL:
 396                 bfa_ioc_fail_notify(ioc);
 397                 if (ioc->iocpf.auto_recover)
 398                         bfa_fsm_set_state(ioc, bfa_ioc_sm_fail_retry);
 399                 else
 400                         bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);
 401
 402                 if (event != IOC_E_PFAILED)
 403                         bfa_iocpf_fail(ioc);
 404                 break;
 405
 406         default:
 407                 bfa_sm_fault(ioc, event);
 408         }
 409 }
 410
 411 static void
 412 bfa_ioc_sm_disabling_entry(struct bfa_ioc *ioc)
 413 {
 414         bfa_iocpf_disable(ioc);
 415 }
 416
 417 /**
 418  * IOC is being desabled
 419  */
 420 static void
 421 bfa_ioc_sm_disabling(struct bfa_ioc *ioc, enum ioc_event event)
 422 {
 423         switch (event) {
 424         case IOC_E_DISABLED:
 425                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabled);
 426                 break;
 427
 428         case IOC_E_HWERROR:
 429                 /*
 430                  * No state change.  Will move to disabled state
 431                  * after iocpf sm completes failure processing and
 432                  * moves to disabled state.
 433                  */
 434                 bfa_iocpf_fail(ioc);
 435                 break;
 436
 437         default:
 438                 bfa_sm_fault(ioc, event);
 439         }
 440 }
 441
 442 /**
 443  * IOC desable completion entry.
 444  */
 445 static void
 446 bfa_ioc_sm_disabled_entry(struct bfa_ioc *ioc)
 447 {
 448         bfa_ioc_disable_comp(ioc);
 449 }
 450
 451 static void
 452 bfa_ioc_sm_disabled(struct bfa_ioc *ioc, enum ioc_event event)
 453 {
 454         switch (event) {
 455         case IOC_E_ENABLE:
 456                 bfa_fsm_set_state(ioc, bfa_ioc_sm_enabling);
 457                 break;
 458
 459         case IOC_E_DISABLE:
 460                 ioc->cbfn->disable_cbfn(ioc->bfa);
 461                 break;
 462
 463         case IOC_E_DETACH:
 464                 bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
 465                 bfa_iocpf_stop(ioc);
 466                 break;
 467
 468         default:
 469                 bfa_sm_fault(ioc, event);
 470         }
 471 }
 472
 473 static void
 474 bfa_ioc_sm_fail_retry_entry(struct bfa_ioc *ioc)
 475 {
 476 }
 477
 478 /**
 479  * Hardware initialization retry.
 480  */
 481 static void
 482 bfa_ioc_sm_fail_retry(struct bfa_ioc *ioc, enum ioc_event event)
 483 {
 484         switch (event) {
 485         case IOC_E_ENABLED:
 486                 bfa_fsm_set_state(ioc, bfa_ioc_sm_getattr);
 487                 break;
 488
 489         case IOC_E_PFAILED:
 490         case IOC_E_HWERROR:
 491                 /**
 492                  * Initialization retry failed.
 493                  */
 494                 ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
 495                 if (event != IOC_E_PFAILED)
 496                         bfa_iocpf_initfail(ioc);
 497                 break;
 498
 499         case IOC_E_INITFAILED:
 500                 bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);
 501                 break;
 502
 503         case IOC_E_ENABLE:
 504                 break;
 505
 506         case IOC_E_DISABLE:
 507                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
 508                 break;
 509
 510         case IOC_E_DETACH:
 511                 bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
 512                 bfa_iocpf_stop(ioc);
 513                 break;
 514
 515         default:
 516                 bfa_sm_fault(ioc, event);
 517         }
 518 }
 519
 520 static void
 521 bfa_ioc_sm_fail_entry(struct bfa_ioc *ioc)
 522 {
 523 }
 524
 525 /**
 526  * IOC failure.
 527  */
 528 static void
 529 bfa_ioc_sm_fail(struct bfa_ioc *ioc, enum ioc_event event)
 530 {
 531         switch (event) {
 532         case IOC_E_ENABLE:
 533                 ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
 534                 break;
 535
 536         case IOC_E_DISABLE:
 537                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
 538                 break;
 539
 540         case IOC_E_DETACH:
 541                 bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
 542                 bfa_iocpf_stop(ioc);
 543                 break;
 544
 545         case IOC_E_HWERROR:
 546                 /* HB failure notification, ignore. */
 547                 break;
 548
 549         default:
 550                 bfa_sm_fault(ioc, event);
 551         }
 552 }
 553
 554 /**
 555  * IOCPF State Machine
 556  */
 557
 558 /**
 559  * Reset entry actions -- initialize state machine
 560  */
 561 static void
 562 bfa_iocpf_sm_reset_entry(struct bfa_iocpf *iocpf)
 563 {
 564         iocpf->retry_count = 0;
 565         iocpf->auto_recover = bfa_nw_auto_recover;
 566 }
 567
 568 /**
 569  * Beginning state. IOC is in reset state.
 570  */
 571 static void
 572 bfa_iocpf_sm_reset(struct bfa_iocpf *iocpf, enum iocpf_event event)
 573 {
 574         switch (event) {
 575         case IOCPF_E_ENABLE:
 576                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fwcheck);
 577                 break;
 578
 579         case IOCPF_E_STOP:
 580                 break;
 581
 582         default:
 583                 bfa_sm_fault(iocpf->ioc, event);
 584         }
 585 }
 586
 587 /**
 588  * Semaphore should be acquired for version check.
 589  */
 590 static void
 591 bfa_iocpf_sm_fwcheck_entry(struct bfa_iocpf *iocpf)
 592 {
 593         bfa_ioc_hw_sem_get(iocpf->ioc);
 594 }
 595
 596 /**
 597  * Awaiting h/w semaphore to continue with version check.
 598  */
 599 static void
 600 bfa_iocpf_sm_fwcheck(struct bfa_iocpf *iocpf, enum iocpf_event event)
 601 {
 602         struct bfa_ioc *ioc = iocpf->ioc;
 603
 604         switch (event) {
 605         case IOCPF_E_SEMLOCKED:
 606                 if (bfa_ioc_firmware_lock(ioc)) {
 607                         if (bfa_ioc_sync_start(ioc)) {
 608                                 iocpf->retry_count = 0;
 609                                 bfa_ioc_sync_join(ioc);
 610                                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
 611                         } else {
 612                                 bfa_ioc_firmware_unlock(ioc);
 613                                 bfa_nw_ioc_hw_sem_release(ioc);
 614                                 mod_timer(&ioc->sem_timer, jiffies +
 615                                         msecs_to_jiffies(BFA_IOC_HWSEM_TOV));
 616                         }
 617                 } else {
 618                         bfa_nw_ioc_hw_sem_release(ioc);
 619                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_mismatch);
 620                 }
 621                 break;
 622
 623         case IOCPF_E_DISABLE:
 624                 bfa_ioc_hw_sem_get_cancel(ioc);
 625                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
 626                 bfa_ioc_pf_disabled(ioc);
 627                 break;
 628
 629         case IOCPF_E_STOP:
 630                 bfa_ioc_hw_sem_get_cancel(ioc);
 631                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
 632                 break;
 633
 634         default:
 635                 bfa_sm_fault(ioc, event);
 636         }
 637 }
 638
 639 /**
 640  * Notify enable completion callback
 641  */
 642 static void
 643 bfa_iocpf_sm_mismatch_entry(struct bfa_iocpf *iocpf)
 644 {
 645         /* Call only the first time sm enters fwmismatch state. */
 646         if (iocpf->retry_count == 0)
 647                 bfa_ioc_pf_fwmismatch(iocpf->ioc);
 648
 649         iocpf->retry_count++;
 650         mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
 651                 msecs_to_jiffies(BFA_IOC_TOV));
 652 }
 653
 654 /**
 655  * Awaiting firmware version match.
 656  */
 657 static void
 658 bfa_iocpf_sm_mismatch(struct bfa_iocpf *iocpf, enum iocpf_event event)
 659 {
 660         struct bfa_ioc *ioc = iocpf->ioc;
 661
 662         switch (event) {
 663         case IOCPF_E_TIMEOUT:
 664                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fwcheck);
 665                 break;
 666
 667         case IOCPF_E_DISABLE:
 668                 del_timer(&ioc->iocpf_timer);
 669                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
 670                 bfa_ioc_pf_disabled(ioc);
 671                 break;
 672
 673         case IOCPF_E_STOP:
 674                 del_timer(&ioc->iocpf_timer);
 675                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
 676                 break;
 677
 678         default:
 679                 bfa_sm_fault(ioc, event);
 680         }
 681 }
 682
 683 /**
 684  * Request for semaphore.
 685  */
 686 static void
 687 bfa_iocpf_sm_semwait_entry(struct bfa_iocpf *iocpf)
 688 {
 689         bfa_ioc_hw_sem_get(iocpf->ioc);
 690 }
 691
 692 /**
 693  * Awaiting semaphore for h/w initialzation.
 694  */
 695 static void
 696 bfa_iocpf_sm_semwait(struct bfa_iocpf *iocpf, enum iocpf_event event)
 697 {
 698         struct bfa_ioc *ioc = iocpf->ioc;
 699
 700         switch (event) {
 701         case IOCPF_E_SEMLOCKED:
 702                 if (bfa_ioc_sync_complete(ioc)) {
 703                         bfa_ioc_sync_join(ioc);
 704                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
 705                 } else {
 706                         bfa_nw_ioc_hw_sem_release(ioc);
 707                         mod_timer(&ioc->sem_timer, jiffies +
 708                                 msecs_to_jiffies(BFA_IOC_HWSEM_TOV));
 709                 }
 710                 break;
 711
 712         case IOCPF_E_DISABLE:
 713                 bfa_ioc_hw_sem_get_cancel(ioc);
 714                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
 715                 break;
 716
 717         default:
 718                 bfa_sm_fault(ioc, event);
 719         }
 720 }
 721
 722 static void
 723 bfa_iocpf_sm_hwinit_entry(struct bfa_iocpf *iocpf)
 724 {
 725         mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
 726                 msecs_to_jiffies(BFA_IOC_TOV));
 727         bfa_ioc_reset(iocpf->ioc, 0);
 728 }
 729
 730 /**
 731  * Hardware is being initialized. Interrupts are enabled.
 732  * Holding hardware semaphore lock.
 733  */
 734 static void
 735 bfa_iocpf_sm_hwinit(struct bfa_iocpf *iocpf, enum iocpf_event event)
 736 {
 737         struct bfa_ioc *ioc = iocpf->ioc;
 738
 739         switch (event) {
 740         case IOCPF_E_FWREADY:
 741                 del_timer(&ioc->iocpf_timer);
 742                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_enabling);
 743                 break;
 744
 745         case IOCPF_E_INITFAIL:
 746                 del_timer(&ioc->iocpf_timer);
 747                 /*
 748                  * !!! fall through !!!
 749                  */
 750
 751         case IOCPF_E_TIMEOUT:
 752                 bfa_nw_ioc_hw_sem_release(ioc);
 753                 if (event == IOCPF_E_TIMEOUT)
 754                         bfa_ioc_pf_failed(ioc);
 755                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
 756                 break;
 757
 758         case IOCPF_E_DISABLE:
 759                 del_timer(&ioc->iocpf_timer);
 760                 bfa_ioc_sync_leave(ioc);
 761                 bfa_nw_ioc_hw_sem_release(ioc);
 762                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
 763                 break;
 764
 765         default:
 766                 bfa_sm_fault(ioc, event);
 767         }
 768 }
 769
 770 static void
 771 bfa_iocpf_sm_enabling_entry(struct bfa_iocpf *iocpf)
 772 {
 773         mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
 774                 msecs_to_jiffies(BFA_IOC_TOV));
 775         bfa_ioc_send_enable(iocpf->ioc);
 776 }
 777
 778 /**
 779  * Host IOC function is being enabled, awaiting response from firmware.
 780  * Semaphore is acquired.
 781  */
 782 static void
 783 bfa_iocpf_sm_enabling(struct bfa_iocpf *iocpf, enum iocpf_event event)
 784 {
 785         struct bfa_ioc *ioc = iocpf->ioc;
 786
 787         switch (event) {
 788         case IOCPF_E_FWRSP_ENABLE:
 789                 del_timer(&ioc->iocpf_timer);
 790                 bfa_nw_ioc_hw_sem_release(ioc);
 791                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_ready);
 792                 break;
 793
 794         case IOCPF_E_INITFAIL:
 795                 del_timer(&ioc->iocpf_timer);
 796                 /*
 797                  * !!! fall through !!!
 798                  */
 799         case IOCPF_E_TIMEOUT:
 800                 bfa_nw_ioc_hw_sem_release(ioc);
 801                 if (event == IOCPF_E_TIMEOUT)
 802                         bfa_ioc_pf_failed(ioc);
 803                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
 804                 break;
 805
 806         case IOCPF_E_DISABLE:
 807                 del_timer(&ioc->iocpf_timer);
 808                 bfa_nw_ioc_hw_sem_release(ioc);
 809                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling);
 810                 break;
 811
 812         case IOCPF_E_FWREADY:
 813                 bfa_ioc_send_enable(ioc);
 814                 break;
 815
 816         default:
 817                 bfa_sm_fault(ioc, event);
 818         }
 819 }
 820
 821 static bool
 822 bfa_nw_ioc_is_operational(struct bfa_ioc *ioc)
 823 {
 824         return bfa_fsm_cmp_state(ioc, bfa_ioc_sm_op);
 825 }
 826
 827 static void
 828 bfa_iocpf_sm_ready_entry(struct bfa_iocpf *iocpf)
 829 {
 830         bfa_ioc_pf_enabled(iocpf->ioc);
 831 }
 832
 833 static void
 834 bfa_iocpf_sm_ready(struct bfa_iocpf *iocpf, enum iocpf_event event)
 835 {
 836         struct bfa_ioc *ioc = iocpf->ioc;
 837
 838         switch (event) {
 839         case IOCPF_E_DISABLE:
 840                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling);
 841                 break;
 842
 843         case IOCPF_E_GETATTRFAIL:
 844                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
 845                 break;
 846
 847         case IOCPF_E_FAIL:
 848                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail_sync);
 849                 break;
 850
 851         case IOCPF_E_FWREADY:
 852                 bfa_ioc_pf_failed(ioc);
 853                 if (bfa_nw_ioc_is_operational(ioc))
 854                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail_sync);
 855                 else
 856                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
 857                 break;
 858
 859         default:
 860                 bfa_sm_fault(ioc, event);
 861         }
 862 }
 863
 864 static void
 865 bfa_iocpf_sm_disabling_entry(struct bfa_iocpf *iocpf)
 866 {
 867         mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
 868                 msecs_to_jiffies(BFA_IOC_TOV));
 869         bfa_ioc_send_disable(iocpf->ioc);
 870 }
 871
 872 /**
 873  * IOC is being disabled
 874  */
 875 static void
 876 bfa_iocpf_sm_disabling(struct bfa_iocpf *iocpf, enum iocpf_event event)
 877 {
 878         struct bfa_ioc *ioc = iocpf->ioc;
 879
 880         switch (event) {
 881         case IOCPF_E_FWRSP_DISABLE:
 882         case IOCPF_E_FWREADY:
 883                 del_timer(&ioc->iocpf_timer);
 884                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
 885                 break;
 886
 887         case IOCPF_E_FAIL:
 888                 del_timer(&ioc->iocpf_timer);
 889                 /*
 890                  * !!! fall through !!!
 891                  */
 892
 893         case IOCPF_E_TIMEOUT:
 894                 writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
 895                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
 896                 break;
 897
 898         case IOCPF_E_FWRSP_ENABLE:
 899                 break;
 900
 901         default:
 902                 bfa_sm_fault(ioc, event);
 903         }
 904 }
 905
 906 static void
 907 bfa_iocpf_sm_disabling_sync_entry(struct bfa_iocpf *iocpf)
 908 {
 909         bfa_ioc_hw_sem_get(iocpf->ioc);
 910 }
 911
 912 /**
 913  * IOC hb ack request is being removed.
 914  */
 915 static void
 916 bfa_iocpf_sm_disabling_sync(struct bfa_iocpf *iocpf, enum iocpf_event event)
 917 {
 918         struct bfa_ioc *ioc = iocpf->ioc;
 919
 920         switch (event) {
 921         case IOCPF_E_SEMLOCKED:
 922                 bfa_ioc_sync_leave(ioc);
 923                 bfa_nw_ioc_hw_sem_release(ioc);
 924                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
 925                 break;
 926
 927         case IOCPF_E_FAIL:
 928                 break;
 929
 930         default:
 931                 bfa_sm_fault(ioc, event);
 932         }
 933 }
 934
 935 /**
 936  * IOC disable completion entry.
 937  */
 938 static void
 939 bfa_iocpf_sm_disabled_entry(struct bfa_iocpf *iocpf)
 940 {
 941         bfa_ioc_pf_disabled(iocpf->ioc);
 942 }
 943
 944 static void
 945 bfa_iocpf_sm_disabled(struct bfa_iocpf *iocpf, enum iocpf_event event)
 946 {
 947         struct bfa_ioc *ioc = iocpf->ioc;
 948
 949         switch (event) {
 950         case IOCPF_E_ENABLE:
 951                 iocpf->retry_count = 0;
 952                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_semwait);
 953                 break;
 954
 955         case IOCPF_E_STOP:
 956                 bfa_ioc_firmware_unlock(ioc);
 957                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
 958                 break;
 959
 960         default:
 961                 bfa_sm_fault(ioc, event);
 962         }
 963 }
 964
 965 static void
 966 bfa_iocpf_sm_initfail_sync_entry(struct bfa_iocpf *iocpf)
 967 {
 968         bfa_ioc_hw_sem_get(iocpf->ioc);
 969 }
 970
 971 /**
 972  * Hardware initialization failed.
 973  */
 974 static void
 975 bfa_iocpf_sm_initfail_sync(struct bfa_iocpf *iocpf, enum iocpf_event event)
 976 {
 977         struct bfa_ioc *ioc = iocpf->ioc;
 978
 979         switch (event) {
 980         case IOCPF_E_SEMLOCKED:
 981                 bfa_ioc_notify_fail(ioc);
 982                 bfa_ioc_sync_ack(ioc);
 983                 iocpf->retry_count++;
 984                 if (iocpf->retry_count >= BFA_IOC_HWINIT_MAX) {
 985                         bfa_ioc_sync_leave(ioc);
 986                         bfa_nw_ioc_hw_sem_release(ioc);
 987                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail);
 988                 } else {
 989                         if (bfa_ioc_sync_complete(ioc))
 990                                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
 991                         else {
 992                                 bfa_nw_ioc_hw_sem_release(ioc);
 993                                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_semwait);
 994                         }
 995                 }
 996                 break;
 997
 998         case IOCPF_E_DISABLE:
 999                 bfa_ioc_hw_sem_get_cancel(ioc);
1000                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
1001                 break;
1002
1003         case IOCPF_E_STOP:
1004                 bfa_ioc_hw_sem_get_cancel(ioc);
1005                 bfa_ioc_firmware_unlock(ioc);
1006                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
1007                 break;
1008
1009         case IOCPF_E_FAIL:
1010                 break;
1011
1012         default:
1013                 bfa_sm_fault(ioc, event);
1014         }
1015 }
1016
1017 static void
1018 bfa_iocpf_sm_initfail_entry(struct bfa_iocpf *iocpf)
1019 {
1020         bfa_ioc_pf_initfailed(iocpf->ioc);
1021 }
1022
1023 /**
1024  * Hardware initialization failed.
1025  */
1026 static void
1027 bfa_iocpf_sm_initfail(struct bfa_iocpf *iocpf, enum iocpf_event event)
1028 {
1029         struct bfa_ioc *ioc = iocpf->ioc;
1030
1031         switch (event) {
1032         case IOCPF_E_DISABLE:
1033                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
1034                 break;
1035
1036         case IOCPF_E_STOP:
1037                 bfa_ioc_firmware_unlock(ioc);
1038                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
1039                 break;
1040
1041         default:
1042                 bfa_sm_fault(ioc, event);
1043         }
1044 }
1045
1046 static void
1047 bfa_iocpf_sm_fail_sync_entry(struct bfa_iocpf *iocpf)
1048 {
1049         /**
1050          * Mark IOC as failed in hardware and stop firmware.
1051          */
1052         bfa_ioc_lpu_stop(iocpf->ioc);
1053
1054         /**
1055          * Flush any queued up mailbox requests.
1056          */
1057         bfa_ioc_mbox_hbfail(iocpf->ioc);
1058         bfa_ioc_hw_sem_get(iocpf->ioc);
1059 }
1060
1061 /**
1062  * IOC is in failed state.
1063  */
1064 static void
1065 bfa_iocpf_sm_fail_sync(struct bfa_iocpf *iocpf, enum iocpf_event event)
1066 {
1067         struct bfa_ioc *ioc = iocpf->ioc;
1068
1069         switch (event) {
1070         case IOCPF_E_SEMLOCKED:
1071                 iocpf->retry_count = 0;
1072                 bfa_ioc_sync_ack(ioc);
1073                 bfa_ioc_notify_fail(ioc);
1074                 if (!iocpf->auto_recover) {
1075                         bfa_ioc_sync_leave(ioc);
1076                         bfa_nw_ioc_hw_sem_release(ioc);
1077                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
1078                 } else {
1079                         if (bfa_ioc_sync_complete(ioc))
1080                                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
1081                         else {
1082                                 bfa_nw_ioc_hw_sem_release(ioc);
1083                                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_semwait);
1084                         }
1085                 }
1086                 break;
1087
1088         case IOCPF_E_DISABLE:
1089                 bfa_ioc_hw_sem_get_cancel(ioc);
1090                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
1091                 break;
1092
1093         case IOCPF_E_FAIL:
1094                 break;
1095
1096         default:
1097                 bfa_sm_fault(ioc, event);
1098         }
1099 }
1100
1101 static void
1102 bfa_iocpf_sm_fail_entry(struct bfa_iocpf *iocpf)
1103 {
1104 }
1105
1106 /**
1107  * @brief
1108  * IOC is in failed state.
1109  */
1110 static void
1111 bfa_iocpf_sm_fail(struct bfa_iocpf *iocpf, enum iocpf_event event)
1112 {
1113         switch (event) {
1114         case IOCPF_E_DISABLE:
1115                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
1116                 break;
1117
1118         default:
1119                 bfa_sm_fault(iocpf->ioc, event);
1120         }
1121 }
1122
1123 /**
1124  * BFA IOC private functions
1125  */
1126
1127 static void
1128 bfa_ioc_disable_comp(struct bfa_ioc *ioc)
1129 {
1130         struct list_head                        *qe;
1131         struct bfa_ioc_hbfail_notify *notify;
1132
1133         ioc->cbfn->disable_cbfn(ioc->bfa);
1134
1135         /**
1136          * Notify common modules registered for notification.
1137          */
1138         list_for_each(qe, &ioc->hb_notify_q) {
1139                 notify = (struct bfa_ioc_hbfail_notify *) qe;
1140                 notify->cbfn(notify->cbarg);
1141         }
1142 }
1143
1144 bool
1145 bfa_nw_ioc_sem_get(void __iomem *sem_reg)
1146 {
1147         u32 r32;
1148         int cnt = 0;
1149 #define BFA_SEM_SPINCNT 3000
1150
1151         r32 = readl(sem_reg);
1152
1153         while (r32 && (cnt < BFA_SEM_SPINCNT)) {
1154                 cnt++;
1155                 udelay(2);
1156                 r32 = readl(sem_reg);
1157         }
1158
1159         if (r32 == 0)
1160                 return true;
1161
1162         BUG_ON(!(cnt < BFA_SEM_SPINCNT));
1163         return false;
1164 }
1165
1166 void
1167 bfa_nw_ioc_sem_release(void __iomem *sem_reg)
1168 {
1169         writel(1, sem_reg);
1170 }
1171
1172 static void
1173 bfa_ioc_hw_sem_get(struct bfa_ioc *ioc)
1174 {
1175         u32     r32;
1176
1177         /**
1178          * First read to the semaphore register will return 0, subsequent reads
1179          * will return 1. Semaphore is released by writing 1 to the register
1180          */
1181         r32 = readl(ioc->ioc_regs.ioc_sem_reg);
1182         if (r32 == 0) {
1183                 bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_SEMLOCKED);
1184                 return;
1185         }
1186
1187         mod_timer(&ioc->sem_timer, jiffies +
1188                 msecs_to_jiffies(BFA_IOC_HWSEM_TOV));
1189 }
1190
1191 void
1192 bfa_nw_ioc_hw_sem_release(struct bfa_ioc *ioc)
1193 {
1194         writel(1, ioc->ioc_regs.ioc_sem_reg);
1195 }
1196
1197 static void
1198 bfa_ioc_hw_sem_get_cancel(struct bfa_ioc *ioc)
1199 {
1200         del_timer(&ioc->sem_timer);
1201 }
1202
1203 /**
1204  * @brief
1205  * Initialize LPU local memory (aka secondary memory / SRAM)
1206  */
1207 static void
1208 bfa_ioc_lmem_init(struct bfa_ioc *ioc)
1209 {
1210         u32     pss_ctl;
1211         int             i;
1212 #define PSS_LMEM_INIT_TIME  10000
1213
1214         pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
1215         pss_ctl &= ~__PSS_LMEM_RESET;
1216         pss_ctl |= __PSS_LMEM_INIT_EN;
1217
1218         /*
1219          * i2c workaround 12.5khz clock
1220          */
1221         pss_ctl |= __PSS_I2C_CLK_DIV(3UL);
1222         writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);
1223
1224         /**
1225          * wait for memory initialization to be complete
1226          */
1227         i = 0;
1228         do {
1229                 pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
1230                 i++;
1231         } while (!(pss_ctl & __PSS_LMEM_INIT_DONE) && (i < PSS_LMEM_INIT_TIME));
1232
1233         /**
1234          * If memory initialization is not successful, IOC timeout will catch
1235          * such failures.
1236          */
1237         BUG_ON(!(pss_ctl & __PSS_LMEM_INIT_DONE));
1238
1239         pss_ctl &= ~(__PSS_LMEM_INIT_DONE | __PSS_LMEM_INIT_EN);
1240         writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);
1241 }
1242
1243 static void
1244 bfa_ioc_lpu_start(struct bfa_ioc *ioc)
1245 {
1246         u32     pss_ctl;
1247
1248         /**
1249          * Take processor out of reset.
1250          */
1251         pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
1252         pss_ctl &= ~__PSS_LPU0_RESET;
1253
1254         writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);
1255 }
1256
1257 static void
1258 bfa_ioc_lpu_stop(struct bfa_ioc *ioc)
1259 {
1260         u32     pss_ctl;
1261
1262         /**
1263          * Put processors in reset.
1264          */
1265         pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
1266         pss_ctl |= (__PSS_LPU0_RESET | __PSS_LPU1_RESET);
1267
1268         writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);
1269 }
1270
1271 /**
1272  * Get driver and firmware versions.
1273  */
1274 void
1275 bfa_nw_ioc_fwver_get(struct bfa_ioc *ioc, struct bfi_ioc_image_hdr *fwhdr)
1276 {
1277         u32     pgnum, pgoff;
1278         u32     loff = 0;
1279         int             i;
1280         u32     *fwsig = (u32 *) fwhdr;
1281
1282         pgnum = bfa_ioc_smem_pgnum(ioc, loff);
1283         pgoff = bfa_ioc_smem_pgoff(ioc, loff);
1284         writel(pgnum, ioc->ioc_regs.host_page_num_fn);
1285
1286         for (i = 0; i < (sizeof(struct bfi_ioc_image_hdr) / sizeof(u32));
1287              i++) {
1288                 fwsig[i] =
1289                         swab32(readl((loff) + (ioc->ioc_regs.smem_page_start)));
1290                 loff += sizeof(u32);
1291         }
1292 }
1293
1294 /**
1295  * Returns TRUE if same.
1296  */
1297 bool
1298 bfa_nw_ioc_fwver_cmp(struct bfa_ioc *ioc, struct bfi_ioc_image_hdr *fwhdr)
1299 {
1300         struct bfi_ioc_image_hdr *drv_fwhdr;
1301         int i;
1302
1303         drv_fwhdr = (struct bfi_ioc_image_hdr *)
1304                 bfa_cb_image_get_chunk(BFA_IOC_FWIMG_TYPE(ioc), 0);
1305
1306         for (i = 0; i < BFI_IOC_MD5SUM_SZ; i++) {
1307                 if (fwhdr->md5sum[i] != drv_fwhdr->md5sum[i])
1308                         return false;
1309         }
1310
1311         return true;
1312 }
1313
1314 /**
1315  * Return true if current running version is valid. Firmware signature and
1316  * execution context (driver/bios) must match.
1317  */
1318 static bool
1319 bfa_ioc_fwver_valid(struct bfa_ioc *ioc, u32 boot_env)
1320 {
1321         struct bfi_ioc_image_hdr fwhdr, *drv_fwhdr;
1322
1323         bfa_nw_ioc_fwver_get(ioc, &fwhdr);
1324         drv_fwhdr = (struct bfi_ioc_image_hdr *)
1325                 bfa_cb_image_get_chunk(BFA_IOC_FWIMG_TYPE(ioc), 0);
1326
1327         if (fwhdr.signature != drv_fwhdr->signature)
1328                 return false;
1329
1330         if (swab32(fwhdr.param) != boot_env)
1331                 return false;
1332
1333         return bfa_nw_ioc_fwver_cmp(ioc, &fwhdr);
1334 }
1335
1336 /**
1337  * Conditionally flush any pending message from firmware at start.
1338  */
1339 static void
1340 bfa_ioc_msgflush(struct bfa_ioc *ioc)
1341 {
1342         u32     r32;
1343
1344         r32 = readl(ioc->ioc_regs.lpu_mbox_cmd);
1345         if (r32)
1346                 writel(1, ioc->ioc_regs.lpu_mbox_cmd);
1347 }
1348
1349 /**
1350  * @img ioc_init_logic.jpg
1351  */
1352 static void
1353 bfa_ioc_hwinit(struct bfa_ioc *ioc, bool force)
1354 {
1355         enum bfi_ioc_state ioc_fwstate;
1356         bool fwvalid;
1357         u32 boot_env;
1358
1359         ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);
1360
1361         boot_env = BFI_BOOT_LOADER_OS;
1362
1363         if (force)
1364                 ioc_fwstate = BFI_IOC_UNINIT;
1365
1366         /**
1367          * check if firmware is valid
1368          */
1369         fwvalid = (ioc_fwstate == BFI_IOC_UNINIT) ?
1370                 false : bfa_ioc_fwver_valid(ioc, boot_env);
1371
1372         if (!fwvalid) {
1373                 bfa_ioc_boot(ioc, BFI_BOOT_TYPE_NORMAL, boot_env);
1374                 return;
1375         }
1376
1377         /**
1378          * If hardware initialization is in progress (initialized by other IOC),
1379          * just wait for an initialization completion interrupt.
1380          */
1381         if (ioc_fwstate == BFI_IOC_INITING) {
1382                 ioc->cbfn->reset_cbfn(ioc->bfa);
1383                 return;
1384         }
1385
1386         /**
1387          * If IOC function is disabled and firmware version is same,
1388          * just re-enable IOC.
1389          */
1390         if (ioc_fwstate == BFI_IOC_DISABLED || ioc_fwstate == BFI_IOC_OP) {
1391                 /**
1392                  * When using MSI-X any pending firmware ready event should
1393                  * be flushed. Otherwise MSI-X interrupts are not delivered.
1394                  */
1395                 bfa_ioc_msgflush(ioc);
1396                 ioc->cbfn->reset_cbfn(ioc->bfa);
1397                 bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FWREADY);
1398                 return;
1399         }
1400
1401         /**
1402          * Initialize the h/w for any other states.
1403          */
1404         bfa_ioc_boot(ioc, BFI_BOOT_TYPE_NORMAL, boot_env);
1405 }
1406
1407 void
1408 bfa_nw_ioc_timeout(void *ioc_arg)
1409 {
1410         struct bfa_ioc *ioc = (struct bfa_ioc *) ioc_arg;
1411
1412         bfa_fsm_send_event(ioc, IOC_E_TIMEOUT);
1413 }
1414
1415 static void
1416 bfa_ioc_mbox_send(struct bfa_ioc *ioc, void *ioc_msg, int len)
1417 {
1418         u32 *msgp = (u32 *) ioc_msg;
1419         u32 i;
1420
1421         BUG_ON(!(len <= BFI_IOC_MSGLEN_MAX));
1422
1423         /*
1424          * first write msg to mailbox registers
1425          */
1426         for (i = 0; i < len / sizeof(u32); i++)
1427                 writel(cpu_to_le32(msgp[i]),
1428                               ioc->ioc_regs.hfn_mbox + i * sizeof(u32));
1429
1430         for (; i < BFI_IOC_MSGLEN_MAX / sizeof(u32); i++)
1431                 writel(0, ioc->ioc_regs.hfn_mbox + i * sizeof(u32));
1432
1433         /*
1434          * write 1 to mailbox CMD to trigger LPU event
1435          */
1436         writel(1, ioc->ioc_regs.hfn_mbox_cmd);
1437         (void) readl(ioc->ioc_regs.hfn_mbox_cmd);
1438 }
1439
1440 static void
1441 bfa_ioc_send_enable(struct bfa_ioc *ioc)
1442 {
1443         struct bfi_ioc_ctrl_req enable_req;
1444         struct timeval tv;
1445
1446         bfi_h2i_set(enable_req.mh, BFI_MC_IOC, BFI_IOC_H2I_ENABLE_REQ,
1447                     bfa_ioc_portid(ioc));
1448         enable_req.ioc_class = ioc->ioc_mc;
1449         do_gettimeofday(&tv);
1450         enable_req.tv_sec = ntohl(tv.tv_sec);
1451         bfa_ioc_mbox_send(ioc, &enable_req, sizeof(struct bfi_ioc_ctrl_req));
1452 }
1453
1454 static void
1455 bfa_ioc_send_disable(struct bfa_ioc *ioc)
1456 {
1457         struct bfi_ioc_ctrl_req disable_req;
1458
1459         bfi_h2i_set(disable_req.mh, BFI_MC_IOC, BFI_IOC_H2I_DISABLE_REQ,
1460                     bfa_ioc_portid(ioc));
1461         bfa_ioc_mbox_send(ioc, &disable_req, sizeof(struct bfi_ioc_ctrl_req));
1462 }
1463
1464 static void
1465 bfa_ioc_send_getattr(struct bfa_ioc *ioc)
1466 {
1467         struct bfi_ioc_getattr_req attr_req;
1468
1469         bfi_h2i_set(attr_req.mh, BFI_MC_IOC, BFI_IOC_H2I_GETATTR_REQ,
1470                     bfa_ioc_portid(ioc));
1471         bfa_dma_be_addr_set(attr_req.attr_addr, ioc->attr_dma.pa);
1472         bfa_ioc_mbox_send(ioc, &attr_req, sizeof(attr_req));
1473 }
1474
1475 void
1476 bfa_nw_ioc_hb_check(void *cbarg)
1477 {
1478         struct bfa_ioc *ioc = cbarg;
1479         u32     hb_count;
1480
1481         hb_count = readl(ioc->ioc_regs.heartbeat);
1482         if (ioc->hb_count == hb_count) {
1483                 bfa_ioc_recover(ioc);
1484                 return;
1485         } else {
1486                 ioc->hb_count = hb_count;
1487         }
1488
1489         bfa_ioc_mbox_poll(ioc);
1490         mod_timer(&ioc->hb_timer, jiffies +
1491                 msecs_to_jiffies(BFA_IOC_HB_TOV));
1492 }
1493
1494 static void
1495 bfa_ioc_hb_monitor(struct bfa_ioc *ioc)
1496 {
1497         ioc->hb_count = readl(ioc->ioc_regs.heartbeat);
1498         mod_timer(&ioc->hb_timer, jiffies +
1499                 msecs_to_jiffies(BFA_IOC_HB_TOV));
1500 }
1501
1502 static void
1503 bfa_ioc_hb_stop(struct bfa_ioc *ioc)
1504 {
1505         del_timer(&ioc->hb_timer);
1506 }
1507
1508 /**
1509  * @brief
1510  *      Initiate a full firmware download.
1511  */
1512 static void
1513 bfa_ioc_download_fw(struct bfa_ioc *ioc, u32 boot_type,
1514                     u32 boot_env)
1515 {
1516         u32 *fwimg;
1517         u32 pgnum, pgoff;
1518         u32 loff = 0;
1519         u32 chunkno = 0;
1520         u32 i;
1521
1522         /**
1523          * Initialize LMEM first before code download
1524          */
1525         bfa_ioc_lmem_init(ioc);
1526
1527         fwimg = bfa_cb_image_get_chunk(BFA_IOC_FWIMG_TYPE(ioc), chunkno);
1528
1529         pgnum = bfa_ioc_smem_pgnum(ioc, loff);
1530         pgoff = bfa_ioc_smem_pgoff(ioc, loff);
1531
1532         writel(pgnum, ioc->ioc_regs.host_page_num_fn);
1533
1534         for (i = 0; i < bfa_cb_image_get_size(BFA_IOC_FWIMG_TYPE(ioc)); i++) {
1535                 if (BFA_IOC_FLASH_CHUNK_NO(i) != chunkno) {
1536                         chunkno = BFA_IOC_FLASH_CHUNK_NO(i);
1537                         fwimg = bfa_cb_image_get_chunk(BFA_IOC_FWIMG_TYPE(ioc),
1538                                         BFA_IOC_FLASH_CHUNK_ADDR(chunkno));
1539                 }
1540
1541                 /**
1542                  * write smem
1543                  */
1544                 writel((swab32(fwimg[BFA_IOC_FLASH_OFFSET_IN_CHUNK(i)])),
1545                               ((ioc->ioc_regs.smem_page_start) + (loff)));
1546
1547                 loff += sizeof(u32);
1548
1549                 /**
1550                  * handle page offset wrap around
1551                  */
1552                 loff = PSS_SMEM_PGOFF(loff);
1553                 if (loff == 0) {
1554                         pgnum++;
1555                         writel(pgnum,
1556                                       ioc->ioc_regs.host_page_num_fn);
1557                 }
1558         }
1559
1560         writel(bfa_ioc_smem_pgnum(ioc, 0),
1561                       ioc->ioc_regs.host_page_num_fn);
1562
1563         /*
1564          * Set boot type and boot param at the end.
1565         */
1566         writel(boot_type, ((ioc->ioc_regs.smem_page_start)
1567                         + (BFI_BOOT_TYPE_OFF)));
1568         writel(boot_env, ((ioc->ioc_regs.smem_page_start)
1569                         + (BFI_BOOT_LOADER_OFF)));
1570 }
1571
1572 static void
1573 bfa_ioc_reset(struct bfa_ioc *ioc, bool force)
1574 {
1575         bfa_ioc_hwinit(ioc, force);
1576 }
1577
1578 /**
1579  * @brief
1580  * Update BFA configuration from firmware configuration.
1581  */
1582 static void
1583 bfa_ioc_getattr_reply(struct bfa_ioc *ioc)
1584 {
1585         struct bfi_ioc_attr *attr = ioc->attr;
1586
1587         attr->adapter_prop  = ntohl(attr->adapter_prop);
1588         attr->card_type     = ntohl(attr->card_type);
1589         attr->maxfrsize     = ntohs(attr->maxfrsize);
1590
1591         bfa_fsm_send_event(ioc, IOC_E_FWRSP_GETATTR);
1592 }
1593
1594 /**
1595  * Attach time initialization of mbox logic.
1596  */
1597 static void
1598 bfa_ioc_mbox_attach(struct bfa_ioc *ioc)
1599 {
1600         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
1601         int     mc;
1602
1603         INIT_LIST_HEAD(&mod->cmd_q);
1604         for (mc = 0; mc < BFI_MC_MAX; mc++) {
1605                 mod->mbhdlr[mc].cbfn = NULL;
1606                 mod->mbhdlr[mc].cbarg = ioc->bfa;
1607         }
1608 }
1609
1610 /**
1611  * Mbox poll timer -- restarts any pending mailbox requests.
1612  */
1613 static void
1614 bfa_ioc_mbox_poll(struct bfa_ioc *ioc)
1615 {
1616         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
1617         struct bfa_mbox_cmd *cmd;
1618         u32                     stat;
1619
1620         /**
1621          * If no command pending, do nothing
1622          */
1623         if (list_empty(&mod->cmd_q))
1624                 return;
1625
1626         /**
1627          * If previous command is not yet fetched by firmware, do nothing
1628          */
1629         stat = readl(ioc->ioc_regs.hfn_mbox_cmd);
1630         if (stat)
1631                 return;
1632
1633         /**
1634          * Enqueue command to firmware.
1635          */
1636         bfa_q_deq(&mod->cmd_q, &cmd);
1637         bfa_ioc_mbox_send(ioc, cmd->msg, sizeof(cmd->msg));
1638 }
1639
1640 /**
1641  * Cleanup any pending requests.
1642  */
1643 static void
1644 bfa_ioc_mbox_hbfail(struct bfa_ioc *ioc)
1645 {
1646         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
1647         struct bfa_mbox_cmd *cmd;
1648
1649         while (!list_empty(&mod->cmd_q))
1650                 bfa_q_deq(&mod->cmd_q, &cmd);
1651 }
1652
1653 static void
1654 bfa_ioc_fail_notify(struct bfa_ioc *ioc)
1655 {
1656         struct list_head                *qe;
1657         struct bfa_ioc_hbfail_notify    *notify;
1658
1659         /**
1660          * Notify driver and common modules registered for notification.
1661          */
1662         ioc->cbfn->hbfail_cbfn(ioc->bfa);
1663         list_for_each(qe, &ioc->hb_notify_q) {
1664                 notify = (struct bfa_ioc_hbfail_notify *) qe;
1665                 notify->cbfn(notify->cbarg);
1666         }
1667 }
1668
1669 static void
1670 bfa_ioc_pf_enabled(struct bfa_ioc *ioc)
1671 {
1672         bfa_fsm_send_event(ioc, IOC_E_ENABLED);
1673 }
1674
1675 static void
1676 bfa_ioc_pf_disabled(struct bfa_ioc *ioc)
1677 {
1678         bfa_fsm_send_event(ioc, IOC_E_DISABLED);
1679 }
1680
1681 static void
1682 bfa_ioc_pf_initfailed(struct bfa_ioc *ioc)
1683 {
1684         bfa_fsm_send_event(ioc, IOC_E_INITFAILED);
1685 }
1686
1687 static void
1688 bfa_ioc_pf_failed(struct bfa_ioc *ioc)
1689 {
1690         bfa_fsm_send_event(ioc, IOC_E_PFAILED);
1691 }
1692
1693 static void
1694 bfa_ioc_pf_fwmismatch(struct bfa_ioc *ioc)
1695 {
1696         /**
1697          * Provide enable completion callback and AEN notification.
1698          */
1699         ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
1700 }
1701
1702 /**
1703  * IOC public
1704  */
1705 static enum bfa_status
1706 bfa_ioc_pll_init(struct bfa_ioc *ioc)
1707 {
1708         /*
1709          *  Hold semaphore so that nobody can access the chip during init.
1710          */
1711         bfa_nw_ioc_sem_get(ioc->ioc_regs.ioc_init_sem_reg);
1712
1713         bfa_ioc_pll_init_asic(ioc);
1714
1715         ioc->pllinit = true;
1716         /*
1717          *  release semaphore.
1718          */
1719         bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_init_sem_reg);
1720
1721         return BFA_STATUS_OK;
1722 }
1723
1724 /**
1725  * Interface used by diag module to do firmware boot with memory test
1726  * as the entry vector.
1727  */
1728 static void
1729 bfa_ioc_boot(struct bfa_ioc *ioc, u32 boot_type, u32 boot_env)
1730 {
1731         void __iomem *rb;
1732
1733         bfa_ioc_stats(ioc, ioc_boots);
1734
1735         if (bfa_ioc_pll_init(ioc) != BFA_STATUS_OK)
1736                 return;
1737
1738         /**
1739          * Initialize IOC state of all functions on a chip reset.
1740          */
1741         rb = ioc->pcidev.pci_bar_kva;
1742         if (boot_type == BFI_BOOT_TYPE_MEMTEST) {
1743                 writel(BFI_IOC_MEMTEST, (rb + BFA_IOC0_STATE_REG));
1744                 writel(BFI_IOC_MEMTEST, (rb + BFA_IOC1_STATE_REG));
1745         } else {
1746                 writel(BFI_IOC_INITING, (rb + BFA_IOC0_STATE_REG));
1747                 writel(BFI_IOC_INITING, (rb + BFA_IOC1_STATE_REG));
1748         }
1749
1750         bfa_ioc_msgflush(ioc);
1751         bfa_ioc_download_fw(ioc, boot_type, boot_env);
1752
1753         /**
1754          * Enable interrupts just before starting LPU
1755          */
1756         ioc->cbfn->reset_cbfn(ioc->bfa);
1757         bfa_ioc_lpu_start(ioc);
1758 }
1759
1760 /**
1761  * Enable/disable IOC failure auto recovery.
1762  */
1763 void
1764 bfa_nw_ioc_auto_recover(bool auto_recover)
1765 {
1766         bfa_nw_auto_recover = auto_recover;
1767 }
1768
1769 static void
1770 bfa_ioc_msgget(struct bfa_ioc *ioc, void *mbmsg)
1771 {
1772         u32     *msgp = mbmsg;
1773         u32     r32;
1774         int             i;
1775
1776         /**
1777          * read the MBOX msg
1778          */
1779         for (i = 0; i < (sizeof(union bfi_ioc_i2h_msg_u) / sizeof(u32));
1780              i++) {
1781                 r32 = readl(ioc->ioc_regs.lpu_mbox +
1782                                    i * sizeof(u32));
1783                 msgp[i] = htonl(r32);
1784         }
1785
1786         /**
1787          * turn off mailbox interrupt by clearing mailbox status
1788          */
1789         writel(1, ioc->ioc_regs.lpu_mbox_cmd);
1790         readl(ioc->ioc_regs.lpu_mbox_cmd);
1791 }
1792
1793 static void
1794 bfa_ioc_isr(struct bfa_ioc *ioc, struct bfi_mbmsg *m)
1795 {
1796         union bfi_ioc_i2h_msg_u *msg;
1797         struct bfa_iocpf *iocpf = &ioc->iocpf;
1798
1799         msg = (union bfi_ioc_i2h_msg_u *) m;
1800
1801         bfa_ioc_stats(ioc, ioc_isrs);
1802
1803         switch (msg->mh.msg_id) {
1804         case BFI_IOC_I2H_HBEAT:
1805                 break;
1806
1807         case BFI_IOC_I2H_READY_EVENT:
1808                 bfa_fsm_send_event(iocpf, IOCPF_E_FWREADY);
1809                 break;
1810
1811         case BFI_IOC_I2H_ENABLE_REPLY:
1812                 bfa_fsm_send_event(iocpf, IOCPF_E_FWRSP_ENABLE);
1813                 break;
1814
1815         case BFI_IOC_I2H_DISABLE_REPLY:
1816                 bfa_fsm_send_event(iocpf, IOCPF_E_FWRSP_DISABLE);
1817                 break;
1818
1819         case BFI_IOC_I2H_GETATTR_REPLY:
1820                 bfa_ioc_getattr_reply(ioc);
1821                 break;
1822
1823         default:
1824                 BUG_ON(1);
1825         }
1826 }
1827
1828 /**
1829  * IOC attach time initialization and setup.
1830  *
1831  * @param[in]   ioc     memory for IOC
1832  * @param[in]   bfa     driver instance structure
1833  */
1834 void
1835 bfa_nw_ioc_attach(struct bfa_ioc *ioc, void *bfa, struct bfa_ioc_cbfn *cbfn)
1836 {
1837         ioc->bfa        = bfa;
1838         ioc->cbfn       = cbfn;
1839         ioc->fcmode     = false;
1840         ioc->pllinit    = false;
1841         ioc->dbg_fwsave_once = true;
1842         ioc->iocpf.ioc  = ioc;
1843
1844         bfa_ioc_mbox_attach(ioc);
1845         INIT_LIST_HEAD(&ioc->hb_notify_q);
1846
1847         bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
1848         bfa_fsm_send_event(ioc, IOC_E_RESET);
1849 }
1850
1851 /**
1852  * Driver detach time IOC cleanup.
1853  */
1854 void
1855 bfa_nw_ioc_detach(struct bfa_ioc *ioc)
1856 {
1857         bfa_fsm_send_event(ioc, IOC_E_DETACH);
1858 }
1859
1860 /**
1861  * Setup IOC PCI properties.
1862  *
1863  * @param[in]   pcidev  PCI device information for this IOC
1864  */
1865 void
1866 bfa_nw_ioc_pci_init(struct bfa_ioc *ioc, struct bfa_pcidev *pcidev,
1867                  enum bfi_mclass mc)
1868 {
1869         ioc->ioc_mc     = mc;
1870         ioc->pcidev     = *pcidev;
1871         ioc->ctdev      = bfa_asic_id_ct(ioc->pcidev.device_id);
1872         ioc->cna        = ioc->ctdev && !ioc->fcmode;
1873
1874         bfa_nw_ioc_set_ct_hwif(ioc);
1875
1876         bfa_ioc_map_port(ioc);
1877         bfa_ioc_reg_init(ioc);
1878 }
1879
1880 /**
1881  * Initialize IOC dma memory
1882  *
1883  * @param[in]   dm_kva  kernel virtual address of IOC dma memory
1884  * @param[in]   dm_pa   physical address of IOC dma memory
1885  */
1886 void
1887 bfa_nw_ioc_mem_claim(struct bfa_ioc *ioc,  u8 *dm_kva, u64 dm_pa)
1888 {
1889         /**
1890          * dma memory for firmware attribute
1891          */
1892         ioc->attr_dma.kva = dm_kva;
1893         ioc->attr_dma.pa = dm_pa;
1894         ioc->attr = (struct bfi_ioc_attr *) dm_kva;
1895 }
1896
1897 /**
1898  * Return size of dma memory required.
1899  */
1900 u32
1901 bfa_nw_ioc_meminfo(void)
1902 {
1903         return roundup(sizeof(struct bfi_ioc_attr), BFA_DMA_ALIGN_SZ);
1904 }
1905
1906 void
1907 bfa_nw_ioc_enable(struct bfa_ioc *ioc)
1908 {
1909         bfa_ioc_stats(ioc, ioc_enables);
1910         ioc->dbg_fwsave_once = true;
1911
1912         bfa_fsm_send_event(ioc, IOC_E_ENABLE);
1913 }
1914
1915 void
1916 bfa_nw_ioc_disable(struct bfa_ioc *ioc)
1917 {
1918         bfa_ioc_stats(ioc, ioc_disables);
1919         bfa_fsm_send_event(ioc, IOC_E_DISABLE);
1920 }
1921
1922 static u32
1923 bfa_ioc_smem_pgnum(struct bfa_ioc *ioc, u32 fmaddr)
1924 {
1925         return PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, fmaddr);
1926 }
1927
1928 static u32
1929 bfa_ioc_smem_pgoff(struct bfa_ioc *ioc, u32 fmaddr)
1930 {
1931         return PSS_SMEM_PGOFF(fmaddr);
1932 }
1933
1934 /**
1935  * Register mailbox message handler function, to be called by common modules
1936  */
1937 void
1938 bfa_nw_ioc_mbox_regisr(struct bfa_ioc *ioc, enum bfi_mclass mc,
1939                     bfa_ioc_mbox_mcfunc_t cbfn, void *cbarg)
1940 {
1941         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
1942
1943         mod->mbhdlr[mc].cbfn    = cbfn;
1944         mod->mbhdlr[mc].cbarg = cbarg;
1945 }
1946
1947 /**
1948  * Queue a mailbox command request to firmware. Waits if mailbox is busy.
1949  * Responsibility of caller to serialize
1950  *
1951  * @param[in]   ioc     IOC instance
1952  * @param[i]    cmd     Mailbox command
1953  */
1954 void
1955 bfa_nw_ioc_mbox_queue(struct bfa_ioc *ioc, struct bfa_mbox_cmd *cmd)
1956 {
1957         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
1958         u32                     stat;
1959
1960         /**
1961          * If a previous command is pending, queue new command
1962          */
1963         if (!list_empty(&mod->cmd_q)) {
1964                 list_add_tail(&cmd->qe, &mod->cmd_q);
1965                 return;
1966         }
1967
1968         /**
1969          * If mailbox is busy, queue command for poll timer
1970          */
1971         stat = readl(ioc->ioc_regs.hfn_mbox_cmd);
1972         if (stat) {
1973                 list_add_tail(&cmd->qe, &mod->cmd_q);
1974                 return;
1975         }
1976
1977         /**
1978          * mailbox is free -- queue command to firmware
1979          */
1980         bfa_ioc_mbox_send(ioc, cmd->msg, sizeof(cmd->msg));
1981 }
1982
1983 /**
1984  * Handle mailbox interrupts
1985  */
1986 void
1987 bfa_nw_ioc_mbox_isr(struct bfa_ioc *ioc)
1988 {
1989         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
1990         struct bfi_mbmsg m;
1991         int                             mc;
1992
1993         bfa_ioc_msgget(ioc, &m);
1994
1995         /**
1996          * Treat IOC message class as special.
1997          */
1998         mc = m.mh.msg_class;
1999         if (mc == BFI_MC_IOC) {
2000                 bfa_ioc_isr(ioc, &m);
2001                 return;
2002         }
2003
2004         if ((mc >= BFI_MC_MAX) || (mod->mbhdlr[mc].cbfn == NULL))
2005                 return;
2006
2007         mod->mbhdlr[mc].cbfn(mod->mbhdlr[mc].cbarg, &m);
2008 }
2009
2010 void
2011 bfa_nw_ioc_error_isr(struct bfa_ioc *ioc)
2012 {
2013         bfa_fsm_send_event(ioc, IOC_E_HWERROR);
2014 }
2015
2016 /**
2017  * Add to IOC heartbeat failure notification queue. To be used by common
2018  * modules such as cee, port, diag.
2019  */
2020 void
2021 bfa_nw_ioc_hbfail_register(struct bfa_ioc *ioc,
2022                         struct bfa_ioc_hbfail_notify *notify)
2023 {
2024         list_add_tail(&notify->qe, &ioc->hb_notify_q);
2025 }
2026
2027 #define BFA_MFG_NAME "Brocade"
2028 static void
2029 bfa_ioc_get_adapter_attr(struct bfa_ioc *ioc,
2030                          struct bfa_adapter_attr *ad_attr)
2031 {
2032         struct bfi_ioc_attr *ioc_attr;
2033
2034         ioc_attr = ioc->attr;
2035
2036         bfa_ioc_get_adapter_serial_num(ioc, ad_attr->serial_num);
2037         bfa_ioc_get_adapter_fw_ver(ioc, ad_attr->fw_ver);
2038         bfa_ioc_get_adapter_optrom_ver(ioc, ad_attr->optrom_ver);
2039         bfa_ioc_get_adapter_manufacturer(ioc, ad_attr->manufacturer);
2040         memcpy(&ad_attr->vpd, &ioc_attr->vpd,
2041                       sizeof(struct bfa_mfg_vpd));
2042
2043         ad_attr->nports = bfa_ioc_get_nports(ioc);
2044         ad_attr->max_speed = bfa_ioc_speed_sup(ioc);
2045
2046         bfa_ioc_get_adapter_model(ioc, ad_attr->model);
2047         /* For now, model descr uses same model string */
2048         bfa_ioc_get_adapter_model(ioc, ad_attr->model_descr);
2049
2050         ad_attr->card_type = ioc_attr->card_type;
2051         ad_attr->is_mezz = bfa_mfg_is_mezz(ioc_attr->card_type);
2052
2053         if (BFI_ADAPTER_IS_SPECIAL(ioc_attr->adapter_prop))
2054                 ad_attr->prototype = 1;
2055         else
2056                 ad_attr->prototype = 0;
2057
2058         ad_attr->pwwn = bfa_ioc_get_pwwn(ioc);
2059         ad_attr->mac  = bfa_nw_ioc_get_mac(ioc);
2060
2061         ad_attr->pcie_gen = ioc_attr->pcie_gen;
2062         ad_attr->pcie_lanes = ioc_attr->pcie_lanes;
2063         ad_attr->pcie_lanes_orig = ioc_attr->pcie_lanes_orig;
2064         ad_attr->asic_rev = ioc_attr->asic_rev;
2065
2066         bfa_ioc_get_pci_chip_rev(ioc, ad_attr->hw_ver);
2067
2068         ad_attr->cna_capable = ioc->cna;
2069         ad_attr->trunk_capable = (ad_attr->nports > 1) && !ioc->cna;
2070 }
2071
2072 static enum bfa_ioc_type
2073 bfa_ioc_get_type(struct bfa_ioc *ioc)
2074 {
2075         if (!ioc->ctdev || ioc->fcmode)
2076                 return BFA_IOC_TYPE_FC;
2077         else if (ioc->ioc_mc == BFI_MC_IOCFC)
2078                 return BFA_IOC_TYPE_FCoE;
2079         else if (ioc->ioc_mc == BFI_MC_LL)
2080                 return BFA_IOC_TYPE_LL;
2081         else {
2082                 BUG_ON(!(ioc->ioc_mc == BFI_MC_LL));
2083                 return BFA_IOC_TYPE_LL;
2084         }
2085 }
2086
2087 static void
2088 bfa_ioc_get_adapter_serial_num(struct bfa_ioc *ioc, char *serial_num)
2089 {
2090         memset(serial_num, 0, BFA_ADAPTER_SERIAL_NUM_LEN);
2091         memcpy(serial_num,
2092                         (void *)ioc->attr->brcd_serialnum,
2093                         BFA_ADAPTER_SERIAL_NUM_LEN);
2094 }
2095
2096 static void
2097 bfa_ioc_get_adapter_fw_ver(struct bfa_ioc *ioc, char *fw_ver)
2098 {
2099         memset(fw_ver, 0, BFA_VERSION_LEN);
2100         memcpy(fw_ver, ioc->attr->fw_version, BFA_VERSION_LEN);
2101 }
2102
2103 static void
2104 bfa_ioc_get_pci_chip_rev(struct bfa_ioc *ioc, char *chip_rev)
2105 {
2106         BUG_ON(!(chip_rev));
2107
2108         memset(chip_rev, 0, BFA_IOC_CHIP_REV_LEN);
2109
2110         chip_rev[0] = 'R';
2111         chip_rev[1] = 'e';
2112         chip_rev[2] = 'v';
2113         chip_rev[3] = '-';
2114         chip_rev[4] = ioc->attr->asic_rev;
2115         chip_rev[5] = '\0';
2116 }
2117
2118 static void
2119 bfa_ioc_get_adapter_optrom_ver(struct bfa_ioc *ioc, char *optrom_ver)
2120 {
2121         memset(optrom_ver, 0, BFA_VERSION_LEN);
2122         memcpy(optrom_ver, ioc->attr->optrom_version,
2123                       BFA_VERSION_LEN);
2124 }
2125
2126 static void
2127 bfa_ioc_get_adapter_manufacturer(struct bfa_ioc *ioc, char *manufacturer)
2128 {
2129         memset(manufacturer, 0, BFA_ADAPTER_MFG_NAME_LEN);
2130         memcpy(manufacturer, BFA_MFG_NAME, BFA_ADAPTER_MFG_NAME_LEN);
2131 }
2132
2133 static void
2134 bfa_ioc_get_adapter_model(struct bfa_ioc *ioc, char *model)
2135 {
2136         struct bfi_ioc_attr *ioc_attr;
2137
2138         BUG_ON(!(model));
2139         memset(model, 0, BFA_ADAPTER_MODEL_NAME_LEN);
2140
2141         ioc_attr = ioc->attr;
2142
2143         /**
2144          * model name
2145          */
2146         snprintf(model, BFA_ADAPTER_MODEL_NAME_LEN, "%s-%u",
2147                 BFA_MFG_NAME, ioc_attr->card_type);
2148 }
2149
2150 static enum bfa_ioc_state
2151 bfa_ioc_get_state(struct bfa_ioc *ioc)
2152 {
2153         enum bfa_iocpf_state iocpf_st;
2154         enum bfa_ioc_state ioc_st = bfa_sm_to_state(ioc_sm_table, ioc->fsm);
2155
2156         if (ioc_st == BFA_IOC_ENABLING ||
2157                 ioc_st == BFA_IOC_FAIL || ioc_st == BFA_IOC_INITFAIL) {
2158
2159                 iocpf_st = bfa_sm_to_state(iocpf_sm_table, ioc->iocpf.fsm);
2160
2161                 switch (iocpf_st) {
2162                 case BFA_IOCPF_SEMWAIT:
2163                         ioc_st = BFA_IOC_SEMWAIT;
2164                         break;
2165
2166                 case BFA_IOCPF_HWINIT:
2167                         ioc_st = BFA_IOC_HWINIT;
2168                         break;
2169
2170                 case BFA_IOCPF_FWMISMATCH:
2171                         ioc_st = BFA_IOC_FWMISMATCH;
2172                         break;
2173
2174                 case BFA_IOCPF_FAIL:
2175                         ioc_st = BFA_IOC_FAIL;
2176                         break;
2177
2178                 case BFA_IOCPF_INITFAIL:
2179                         ioc_st = BFA_IOC_INITFAIL;
2180                         break;
2181
2182                 default:
2183                         break;
2184                 }
2185         }
2186         return ioc_st;
2187 }
2188
2189 void
2190 bfa_nw_ioc_get_attr(struct bfa_ioc *ioc, struct bfa_ioc_attr *ioc_attr)
2191 {
2192         memset((void *)ioc_attr, 0, sizeof(struct bfa_ioc_attr));
2193
2194         ioc_attr->state = bfa_ioc_get_state(ioc);
2195         ioc_attr->port_id = ioc->port_id;
2196
2197         ioc_attr->ioc_type = bfa_ioc_get_type(ioc);
2198
2199         bfa_ioc_get_adapter_attr(ioc, &ioc_attr->adapter_attr);
2200
2201         ioc_attr->pci_attr.device_id = ioc->pcidev.device_id;
2202         ioc_attr->pci_attr.pcifn = ioc->pcidev.pci_func;
2203         bfa_ioc_get_pci_chip_rev(ioc, ioc_attr->pci_attr.chip_rev);
2204 }
2205
2206 /**
2207  * WWN public
2208  */
2209 static u64
2210 bfa_ioc_get_pwwn(struct bfa_ioc *ioc)
2211 {
2212         return ioc->attr->pwwn;
2213 }
2214
2215 mac_t
2216 bfa_nw_ioc_get_mac(struct bfa_ioc *ioc)
2217 {
2218         return ioc->attr->mac;
2219 }
2220
2221 /**
2222  * Firmware failure detected. Start recovery actions.
2223  */
2224 static void
2225 bfa_ioc_recover(struct bfa_ioc *ioc)
2226 {
2227         pr_crit("Heart Beat of IOC has failed\n");
2228         bfa_ioc_stats(ioc, ioc_hbfails);
2229         bfa_fsm_send_event(ioc, IOC_E_HBFAIL);
2230 }
2231
2232 static void
2233 bfa_ioc_check_attr_wwns(struct bfa_ioc *ioc)
2234 {
2235         if (bfa_ioc_get_type(ioc) == BFA_IOC_TYPE_LL)
2236                 return;
2237 }
2238
2239 /**
2240  * @dg hal_iocpf_pvt BFA IOC PF private functions
2241  * @{
2242  */
2243
2244 static void
2245 bfa_iocpf_enable(struct bfa_ioc *ioc)
2246 {
2247         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_ENABLE);
2248 }
2249
2250 static void
2251 bfa_iocpf_disable(struct bfa_ioc *ioc)
2252 {
2253         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_DISABLE);
2254 }
2255
2256 static void
2257 bfa_iocpf_fail(struct bfa_ioc *ioc)
2258 {
2259         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FAIL);
2260 }
2261
2262 static void
2263 bfa_iocpf_initfail(struct bfa_ioc *ioc)
2264 {
2265         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_INITFAIL);
2266 }
2267
2268 static void
2269 bfa_iocpf_getattrfail(struct bfa_ioc *ioc)
2270 {
2271         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_GETATTRFAIL);
2272 }
2273
2274 static void
2275 bfa_iocpf_stop(struct bfa_ioc *ioc)
2276 {
2277         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_STOP);
2278 }
2279
2280 void
2281 bfa_nw_iocpf_timeout(void *ioc_arg)
2282 {
2283         struct bfa_ioc  *ioc = (struct bfa_ioc *) ioc_arg;
2284
2285         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_TIMEOUT);
2286 }
2287
2288 void
2289 bfa_nw_iocpf_sem_timeout(void *ioc_arg)
2290 {
2291         struct bfa_ioc  *ioc = (struct bfa_ioc *) ioc_arg;
2292
2293         bfa_ioc_hw_sem_get(ioc);
2294 }