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