drivers/net/ethernet/brocade/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_reg.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_init(struct bfa_ioc *ioc);
  62 static void bfa_ioc_hw_sem_get(struct bfa_ioc *ioc);
  63 static void bfa_ioc_hw_sem_get_cancel(struct bfa_ioc *ioc);
  64 static void bfa_ioc_hwinit(struct bfa_ioc *ioc, bool force);
  65 static void bfa_ioc_send_enable(struct bfa_ioc *ioc);
  66 static void bfa_ioc_send_disable(struct bfa_ioc *ioc);
  67 static void bfa_ioc_send_getattr(struct bfa_ioc *ioc);
  68 static void bfa_ioc_hb_monitor(struct bfa_ioc *ioc);
  69 static void bfa_ioc_hb_stop(struct bfa_ioc *ioc);
  70 static void bfa_ioc_reset(struct bfa_ioc *ioc, bool force);
  71 static void bfa_ioc_mbox_poll(struct bfa_ioc *ioc);
  72 static void bfa_ioc_mbox_flush(struct bfa_ioc *ioc);
  73 static void bfa_ioc_recover(struct bfa_ioc *ioc);
  74 static void bfa_ioc_check_attr_wwns(struct bfa_ioc *ioc);
  75 static void bfa_ioc_event_notify(struct bfa_ioc *, enum bfa_ioc_event);
  76 static void bfa_ioc_disable_comp(struct bfa_ioc *ioc);
  77 static void bfa_ioc_lpu_stop(struct bfa_ioc *ioc);
  78 static void bfa_ioc_fail_notify(struct bfa_ioc *ioc);
  79 static void bfa_ioc_pf_enabled(struct bfa_ioc *ioc);
  80 static void bfa_ioc_pf_disabled(struct bfa_ioc *ioc);
  81 static void bfa_ioc_pf_initfailed(struct bfa_ioc *ioc);
  82 static void bfa_ioc_pf_failed(struct bfa_ioc *ioc);
  83 static void bfa_ioc_pf_fwmismatch(struct bfa_ioc *ioc);
  84 static void bfa_ioc_boot(struct bfa_ioc *ioc, u32 boot_type,
  85                          u32 boot_param);
  86 static u32 bfa_ioc_smem_pgnum(struct bfa_ioc *ioc, u32 fmaddr);
  87 static void bfa_ioc_get_adapter_serial_num(struct bfa_ioc *ioc,
  88                                                 char *serial_num);
  89 static void bfa_ioc_get_adapter_fw_ver(struct bfa_ioc *ioc,
  90                                                 char *fw_ver);
  91 static void bfa_ioc_get_pci_chip_rev(struct bfa_ioc *ioc,
  92                                                 char *chip_rev);
  93 static void bfa_ioc_get_adapter_optrom_ver(struct bfa_ioc *ioc,
  94                                                 char *optrom_ver);
  95 static void bfa_ioc_get_adapter_manufacturer(struct bfa_ioc *ioc,
  96                                                 char *manufacturer);
  97 static void bfa_ioc_get_adapter_model(struct bfa_ioc *ioc, char *model);
  98 static u64 bfa_ioc_get_pwwn(struct bfa_ioc *ioc);
  99
 100 /**
 101  * IOC state machine definitions/declarations
 102  */
 103 enum ioc_event {
 104         IOC_E_RESET             = 1,    /*!< IOC reset request          */
 105         IOC_E_ENABLE            = 2,    /*!< IOC enable request         */
 106         IOC_E_DISABLE           = 3,    /*!< IOC disable request        */
 107         IOC_E_DETACH            = 4,    /*!< driver detach cleanup      */
 108         IOC_E_ENABLED           = 5,    /*!< f/w enabled                */
 109         IOC_E_FWRSP_GETATTR     = 6,    /*!< IOC get attribute response */
 110         IOC_E_DISABLED          = 7,    /*!< f/w disabled               */
 111         IOC_E_INITFAILED        = 8,    /*!< failure notice by iocpf sm */
 112         IOC_E_PFFAILED          = 9,    /*!< failure notice by iocpf sm */
 113         IOC_E_HBFAIL            = 10,   /*!< heartbeat failure          */
 114         IOC_E_HWERROR           = 11,   /*!< hardware error interrupt   */
 115         IOC_E_TIMEOUT           = 12,   /*!< timeout                    */
 116 };
 117
 118 bfa_fsm_state_decl(bfa_ioc, uninit, struct bfa_ioc, enum ioc_event);
 119 bfa_fsm_state_decl(bfa_ioc, reset, struct bfa_ioc, enum ioc_event);
 120 bfa_fsm_state_decl(bfa_ioc, enabling, struct bfa_ioc, enum ioc_event);
 121 bfa_fsm_state_decl(bfa_ioc, getattr, struct bfa_ioc, enum ioc_event);
 122 bfa_fsm_state_decl(bfa_ioc, op, struct bfa_ioc, enum ioc_event);
 123 bfa_fsm_state_decl(bfa_ioc, fail_retry, struct bfa_ioc, enum ioc_event);
 124 bfa_fsm_state_decl(bfa_ioc, fail, struct bfa_ioc, enum ioc_event);
 125 bfa_fsm_state_decl(bfa_ioc, disabling, struct bfa_ioc, enum ioc_event);
 126 bfa_fsm_state_decl(bfa_ioc, disabled, struct bfa_ioc, enum ioc_event);
 127
 128 static struct bfa_sm_table ioc_sm_table[] = {
 129         {BFA_SM(bfa_ioc_sm_uninit), BFA_IOC_UNINIT},
 130         {BFA_SM(bfa_ioc_sm_reset), BFA_IOC_RESET},
 131         {BFA_SM(bfa_ioc_sm_enabling), BFA_IOC_ENABLING},
 132         {BFA_SM(bfa_ioc_sm_getattr), BFA_IOC_GETATTR},
 133         {BFA_SM(bfa_ioc_sm_op), BFA_IOC_OPERATIONAL},
 134         {BFA_SM(bfa_ioc_sm_fail_retry), BFA_IOC_INITFAIL},
 135         {BFA_SM(bfa_ioc_sm_fail), BFA_IOC_FAIL},
 136         {BFA_SM(bfa_ioc_sm_disabling), BFA_IOC_DISABLING},
 137         {BFA_SM(bfa_ioc_sm_disabled), BFA_IOC_DISABLED},
 138 };
 139
 140 /**
 141  * IOCPF state machine definitions/declarations
 142  */
 143
 144 /*
 145  * Forward declareations for iocpf state machine
 146  */
 147 static void bfa_iocpf_enable(struct bfa_ioc *ioc);
 148 static void bfa_iocpf_disable(struct bfa_ioc *ioc);
 149 static void bfa_iocpf_fail(struct bfa_ioc *ioc);
 150 static void bfa_iocpf_initfail(struct bfa_ioc *ioc);
 151 static void bfa_iocpf_getattrfail(struct bfa_ioc *ioc);
 152 static void bfa_iocpf_stop(struct bfa_ioc *ioc);
 153
 154 /**
 155  * IOCPF state machine events
 156  */
 157 enum iocpf_event {
 158         IOCPF_E_ENABLE          = 1,    /*!< IOCPF enable request       */
 159         IOCPF_E_DISABLE         = 2,    /*!< IOCPF disable request      */
 160         IOCPF_E_STOP            = 3,    /*!< stop on driver detach      */
 161         IOCPF_E_FWREADY         = 4,    /*!< f/w initialization done    */
 162         IOCPF_E_FWRSP_ENABLE    = 5,    /*!< enable f/w response        */
 163         IOCPF_E_FWRSP_DISABLE   = 6,    /*!< disable f/w response       */
 164         IOCPF_E_FAIL            = 7,    /*!< failure notice by ioc sm   */
 165         IOCPF_E_INITFAIL        = 8,    /*!< init fail notice by ioc sm */
 166         IOCPF_E_GETATTRFAIL     = 9,    /*!< init fail notice by ioc sm */
 167         IOCPF_E_SEMLOCKED       = 10,   /*!< h/w semaphore is locked    */
 168         IOCPF_E_TIMEOUT         = 11,   /*!< f/w response timeout       */
 169 };
 170
 171 /**
 172  * IOCPF states
 173  */
 174 enum bfa_iocpf_state {
 175         BFA_IOCPF_RESET         = 1,    /*!< IOC is in reset state */
 176         BFA_IOCPF_SEMWAIT       = 2,    /*!< Waiting for IOC h/w semaphore */
 177         BFA_IOCPF_HWINIT        = 3,    /*!< IOC h/w is being initialized */
 178         BFA_IOCPF_READY         = 4,    /*!< IOCPF is initialized */
 179         BFA_IOCPF_INITFAIL      = 5,    /*!< IOCPF failed */
 180         BFA_IOCPF_FAIL          = 6,    /*!< IOCPF failed */
 181         BFA_IOCPF_DISABLING     = 7,    /*!< IOCPF is being disabled */
 182         BFA_IOCPF_DISABLED      = 8,    /*!< IOCPF is disabled */
 183         BFA_IOCPF_FWMISMATCH    = 9,    /*!< IOC f/w different from drivers */
 184 };
 185
 186 bfa_fsm_state_decl(bfa_iocpf, reset, struct bfa_iocpf, enum iocpf_event);
 187 bfa_fsm_state_decl(bfa_iocpf, fwcheck, struct bfa_iocpf, enum iocpf_event);
 188 bfa_fsm_state_decl(bfa_iocpf, mismatch, struct bfa_iocpf, enum iocpf_event);
 189 bfa_fsm_state_decl(bfa_iocpf, semwait, struct bfa_iocpf, enum iocpf_event);
 190 bfa_fsm_state_decl(bfa_iocpf, hwinit, struct bfa_iocpf, enum iocpf_event);
 191 bfa_fsm_state_decl(bfa_iocpf, enabling, struct bfa_iocpf, enum iocpf_event);
 192 bfa_fsm_state_decl(bfa_iocpf, ready, struct bfa_iocpf, enum iocpf_event);
 193 bfa_fsm_state_decl(bfa_iocpf, initfail_sync, struct bfa_iocpf,
 194                                                 enum iocpf_event);
 195 bfa_fsm_state_decl(bfa_iocpf, initfail, struct bfa_iocpf, enum iocpf_event);
 196 bfa_fsm_state_decl(bfa_iocpf, fail_sync, struct bfa_iocpf, enum iocpf_event);
 197 bfa_fsm_state_decl(bfa_iocpf, fail, struct bfa_iocpf, enum iocpf_event);
 198 bfa_fsm_state_decl(bfa_iocpf, disabling, struct bfa_iocpf, enum iocpf_event);
 199 bfa_fsm_state_decl(bfa_iocpf, disabling_sync, struct bfa_iocpf,
 200                                                 enum iocpf_event);
 201 bfa_fsm_state_decl(bfa_iocpf, disabled, struct bfa_iocpf, enum iocpf_event);
 202
 203 static struct bfa_sm_table iocpf_sm_table[] = {
 204         {BFA_SM(bfa_iocpf_sm_reset), BFA_IOCPF_RESET},
 205         {BFA_SM(bfa_iocpf_sm_fwcheck), BFA_IOCPF_FWMISMATCH},
 206         {BFA_SM(bfa_iocpf_sm_mismatch), BFA_IOCPF_FWMISMATCH},
 207         {BFA_SM(bfa_iocpf_sm_semwait), BFA_IOCPF_SEMWAIT},
 208         {BFA_SM(bfa_iocpf_sm_hwinit), BFA_IOCPF_HWINIT},
 209         {BFA_SM(bfa_iocpf_sm_enabling), BFA_IOCPF_HWINIT},
 210         {BFA_SM(bfa_iocpf_sm_ready), BFA_IOCPF_READY},
 211         {BFA_SM(bfa_iocpf_sm_initfail_sync), BFA_IOCPF_INITFAIL},
 212         {BFA_SM(bfa_iocpf_sm_initfail), BFA_IOCPF_INITFAIL},
 213         {BFA_SM(bfa_iocpf_sm_fail_sync), BFA_IOCPF_FAIL},
 214         {BFA_SM(bfa_iocpf_sm_fail), BFA_IOCPF_FAIL},
 215         {BFA_SM(bfa_iocpf_sm_disabling), BFA_IOCPF_DISABLING},
 216         {BFA_SM(bfa_iocpf_sm_disabling_sync), BFA_IOCPF_DISABLING},
 217         {BFA_SM(bfa_iocpf_sm_disabled), BFA_IOCPF_DISABLED},
 218 };
 219
 220 /**
 221  * IOC State Machine
 222  */
 223
 224 /**
 225  * Beginning state. IOC uninit state.
 226  */
 227 static void
 228 bfa_ioc_sm_uninit_entry(struct bfa_ioc *ioc)
 229 {
 230 }
 231
 232 /**
 233  * IOC is in uninit state.
 234  */
 235 static void
 236 bfa_ioc_sm_uninit(struct bfa_ioc *ioc, enum ioc_event event)
 237 {
 238         switch (event) {
 239         case IOC_E_RESET:
 240                 bfa_fsm_set_state(ioc, bfa_ioc_sm_reset);
 241                 break;
 242
 243         default:
 244                 bfa_sm_fault(event);
 245         }
 246 }
 247
 248 /**
 249  * Reset entry actions -- initialize state machine
 250  */
 251 static void
 252 bfa_ioc_sm_reset_entry(struct bfa_ioc *ioc)
 253 {
 254         bfa_fsm_set_state(&ioc->iocpf, bfa_iocpf_sm_reset);
 255 }
 256
 257 /**
 258  * IOC is in reset state.
 259  */
 260 static void
 261 bfa_ioc_sm_reset(struct bfa_ioc *ioc, enum ioc_event event)
 262 {
 263         switch (event) {
 264         case IOC_E_ENABLE:
 265                 bfa_fsm_set_state(ioc, bfa_ioc_sm_enabling);
 266                 break;
 267
 268         case IOC_E_DISABLE:
 269                 bfa_ioc_disable_comp(ioc);
 270                 break;
 271
 272         case IOC_E_DETACH:
 273                 bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
 274                 break;
 275
 276         default:
 277                 bfa_sm_fault(event);
 278         }
 279 }
 280
 281 static void
 282 bfa_ioc_sm_enabling_entry(struct bfa_ioc *ioc)
 283 {
 284         bfa_iocpf_enable(ioc);
 285 }
 286
 287 /**
 288  * Host IOC function is being enabled, awaiting response from firmware.
 289  * Semaphore is acquired.
 290  */
 291 static void
 292 bfa_ioc_sm_enabling(struct bfa_ioc *ioc, enum ioc_event event)
 293 {
 294         switch (event) {
 295         case IOC_E_ENABLED:
 296                 bfa_fsm_set_state(ioc, bfa_ioc_sm_getattr);
 297                 break;
 298
 299         case IOC_E_PFFAILED:
 300                 /* !!! fall through !!! */
 301         case IOC_E_HWERROR:
 302                 ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
 303                 bfa_fsm_set_state(ioc, bfa_ioc_sm_fail_retry);
 304                 if (event != IOC_E_PFFAILED)
 305                         bfa_iocpf_initfail(ioc);
 306                 break;
 307
 308         case IOC_E_DISABLE:
 309                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
 310                 break;
 311
 312         case IOC_E_DETACH:
 313                 bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
 314                 bfa_iocpf_stop(ioc);
 315                 break;
 316
 317         case IOC_E_ENABLE:
 318                 break;
 319
 320         default:
 321                 bfa_sm_fault(event);
 322         }
 323 }
 324
 325 /**
 326  * Semaphore should be acquired for version check.
 327  */
 328 static void
 329 bfa_ioc_sm_getattr_entry(struct bfa_ioc *ioc)
 330 {
 331         mod_timer(&ioc->ioc_timer, jiffies +
 332                 msecs_to_jiffies(BFA_IOC_TOV));
 333         bfa_ioc_send_getattr(ioc);
 334 }
 335
 336 /**
 337  * IOC configuration in progress. Timer is active.
 338  */
 339 static void
 340 bfa_ioc_sm_getattr(struct bfa_ioc *ioc, enum ioc_event event)
 341 {
 342         switch (event) {
 343         case IOC_E_FWRSP_GETATTR:
 344                 del_timer(&ioc->ioc_timer);
 345                 bfa_ioc_check_attr_wwns(ioc);
 346                 bfa_fsm_set_state(ioc, bfa_ioc_sm_op);
 347                 break;
 348
 349         case IOC_E_PFFAILED:
 350         case IOC_E_HWERROR:
 351                 del_timer(&ioc->ioc_timer);
 352                 /* fall through */
 353         case IOC_E_TIMEOUT:
 354                 ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
 355                 bfa_fsm_set_state(ioc, bfa_ioc_sm_fail_retry);
 356                 if (event != IOC_E_PFFAILED)
 357                         bfa_iocpf_getattrfail(ioc);
 358                 break;
 359
 360         case IOC_E_DISABLE:
 361                 del_timer(&ioc->ioc_timer);
 362                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
 363                 break;
 364
 365         case IOC_E_ENABLE:
 366                 break;
 367
 368         default:
 369                 bfa_sm_fault(event);
 370         }
 371 }
 372
 373 static void
 374 bfa_ioc_sm_op_entry(struct bfa_ioc *ioc)
 375 {
 376         ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_OK);
 377         bfa_ioc_hb_monitor(ioc);
 378 }
 379
 380 static void
 381 bfa_ioc_sm_op(struct bfa_ioc *ioc, enum ioc_event event)
 382 {
 383         switch (event) {
 384         case IOC_E_ENABLE:
 385                 break;
 386
 387         case IOC_E_DISABLE:
 388                 bfa_ioc_hb_stop(ioc);
 389                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
 390                 break;
 391
 392         case IOC_E_PFFAILED:
 393         case IOC_E_HWERROR:
 394                 bfa_ioc_hb_stop(ioc);
 395                 /* !!! fall through !!! */
 396         case IOC_E_HBFAIL:
 397                 bfa_ioc_fail_notify(ioc);
 398                 if (ioc->iocpf.auto_recover)
 399                         bfa_fsm_set_state(ioc, bfa_ioc_sm_fail_retry);
 400                 else
 401                         bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);
 402
 403                 if (event != IOC_E_PFFAILED)
 404                         bfa_iocpf_fail(ioc);
 405                 break;
 406
 407         default:
 408                 bfa_sm_fault(event);
 409         }
 410 }
 411
 412 static void
 413 bfa_ioc_sm_disabling_entry(struct bfa_ioc *ioc)
 414 {
 415         bfa_iocpf_disable(ioc);
 416 }
 417
 418 /**
 419  * IOC is being desabled
 420  */
 421 static void
 422 bfa_ioc_sm_disabling(struct bfa_ioc *ioc, enum ioc_event event)
 423 {
 424         switch (event) {
 425         case IOC_E_DISABLED:
 426                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabled);
 427                 break;
 428
 429         case IOC_E_HWERROR:
 430                 /*
 431                  * No state change.  Will move to disabled state
 432                  * after iocpf sm completes failure processing and
 433                  * moves to disabled state.
 434                  */
 435                 bfa_iocpf_fail(ioc);
 436                 break;
 437
 438         default:
 439                 bfa_sm_fault(event);
 440         }
 441 }
 442
 443 /**
 444  * IOC desable completion entry.
 445  */
 446 static void
 447 bfa_ioc_sm_disabled_entry(struct bfa_ioc *ioc)
 448 {
 449         bfa_ioc_disable_comp(ioc);
 450 }
 451
 452 static void
 453 bfa_ioc_sm_disabled(struct bfa_ioc *ioc, enum ioc_event event)
 454 {
 455         switch (event) {
 456         case IOC_E_ENABLE:
 457                 bfa_fsm_set_state(ioc, bfa_ioc_sm_enabling);
 458                 break;
 459
 460         case IOC_E_DISABLE:
 461                 ioc->cbfn->disable_cbfn(ioc->bfa);
 462                 break;
 463
 464         case IOC_E_DETACH:
 465                 bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
 466                 bfa_iocpf_stop(ioc);
 467                 break;
 468
 469         default:
 470                 bfa_sm_fault(event);
 471         }
 472 }
 473
 474 static void
 475 bfa_ioc_sm_fail_retry_entry(struct bfa_ioc *ioc)
 476 {
 477 }
 478
 479 /**
 480  * Hardware initialization retry.
 481  */
 482 static void
 483 bfa_ioc_sm_fail_retry(struct bfa_ioc *ioc, enum ioc_event event)
 484 {
 485         switch (event) {
 486         case IOC_E_ENABLED:
 487                 bfa_fsm_set_state(ioc, bfa_ioc_sm_getattr);
 488                 break;
 489
 490         case IOC_E_PFFAILED:
 491         case IOC_E_HWERROR:
 492                 /**
 493                  * Initialization retry failed.
 494                  */
 495                 ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
 496                 if (event != IOC_E_PFFAILED)
 497                         bfa_iocpf_initfail(ioc);
 498                 break;
 499
 500         case IOC_E_INITFAILED:
 501                 bfa_fsm_set_state(ioc, bfa_ioc_sm_fail);
 502                 break;
 503
 504         case IOC_E_ENABLE:
 505                 break;
 506
 507         case IOC_E_DISABLE:
 508                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
 509                 break;
 510
 511         case IOC_E_DETACH:
 512                 bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
 513                 bfa_iocpf_stop(ioc);
 514                 break;
 515
 516         default:
 517                 bfa_sm_fault(event);
 518         }
 519 }
 520
 521 static void
 522 bfa_ioc_sm_fail_entry(struct bfa_ioc *ioc)
 523 {
 524 }
 525
 526 /**
 527  * IOC failure.
 528  */
 529 static void
 530 bfa_ioc_sm_fail(struct bfa_ioc *ioc, enum ioc_event event)
 531 {
 532         switch (event) {
 533         case IOC_E_ENABLE:
 534                 ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
 535                 break;
 536
 537         case IOC_E_DISABLE:
 538                 bfa_fsm_set_state(ioc, bfa_ioc_sm_disabling);
 539                 break;
 540
 541         case IOC_E_DETACH:
 542                 bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
 543                 bfa_iocpf_stop(ioc);
 544                 break;
 545
 546         case IOC_E_HWERROR:
 547                 /* HB failure notification, ignore. */
 548                 break;
 549
 550         default:
 551                 bfa_sm_fault(event);
 552         }
 553 }
 554
 555 /**
 556  * IOCPF State Machine
 557  */
 558
 559 /**
 560  * Reset entry actions -- initialize state machine
 561  */
 562 static void
 563 bfa_iocpf_sm_reset_entry(struct bfa_iocpf *iocpf)
 564 {
 565         iocpf->retry_count = 0;
 566         iocpf->auto_recover = bfa_nw_auto_recover;
 567 }
 568
 569 /**
 570  * Beginning state. IOC is in reset state.
 571  */
 572 static void
 573 bfa_iocpf_sm_reset(struct bfa_iocpf *iocpf, enum iocpf_event event)
 574 {
 575         switch (event) {
 576         case IOCPF_E_ENABLE:
 577                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fwcheck);
 578                 break;
 579
 580         case IOCPF_E_STOP:
 581                 break;
 582
 583         default:
 584                 bfa_sm_fault(event);
 585         }
 586 }
 587
 588 /**
 589  * Semaphore should be acquired for version check.
 590  */
 591 static void
 592 bfa_iocpf_sm_fwcheck_entry(struct bfa_iocpf *iocpf)
 593 {
 594         bfa_ioc_hw_sem_init(iocpf->ioc);
 595         bfa_ioc_hw_sem_get(iocpf->ioc);
 596 }
 597
 598 /**
 599  * Awaiting h/w semaphore to continue with version check.
 600  */
 601 static void
 602 bfa_iocpf_sm_fwcheck(struct bfa_iocpf *iocpf, enum iocpf_event event)
 603 {
 604         struct bfa_ioc *ioc = iocpf->ioc;
 605
 606         switch (event) {
 607         case IOCPF_E_SEMLOCKED:
 608                 if (bfa_ioc_firmware_lock(ioc)) {
 609                         if (bfa_ioc_sync_start(ioc)) {
 610                                 iocpf->retry_count = 0;
 611                                 bfa_ioc_sync_join(ioc);
 612                                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
 613                         } else {
 614                                 bfa_ioc_firmware_unlock(ioc);
 615                                 bfa_nw_ioc_hw_sem_release(ioc);
 616                                 mod_timer(&ioc->sem_timer, jiffies +
 617                                         msecs_to_jiffies(BFA_IOC_HWSEM_TOV));
 618                         }
 619                 } else {
 620                         bfa_nw_ioc_hw_sem_release(ioc);
 621                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_mismatch);
 622                 }
 623                 break;
 624
 625         case IOCPF_E_DISABLE:
 626                 bfa_ioc_hw_sem_get_cancel(ioc);
 627                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
 628                 bfa_ioc_pf_disabled(ioc);
 629                 break;
 630
 631         case IOCPF_E_STOP:
 632                 bfa_ioc_hw_sem_get_cancel(ioc);
 633                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
 634                 break;
 635
 636         default:
 637                 bfa_sm_fault(event);
 638         }
 639 }
 640
 641 /**
 642  * Notify enable completion callback
 643  */
 644 static void
 645 bfa_iocpf_sm_mismatch_entry(struct bfa_iocpf *iocpf)
 646 {
 647         /* Call only the first time sm enters fwmismatch state. */
 648         if (iocpf->retry_count == 0)
 649                 bfa_ioc_pf_fwmismatch(iocpf->ioc);
 650
 651         iocpf->retry_count++;
 652         mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
 653                 msecs_to_jiffies(BFA_IOC_TOV));
 654 }
 655
 656 /**
 657  * Awaiting firmware version match.
 658  */
 659 static void
 660 bfa_iocpf_sm_mismatch(struct bfa_iocpf *iocpf, enum iocpf_event event)
 661 {
 662         struct bfa_ioc *ioc = iocpf->ioc;
 663
 664         switch (event) {
 665         case IOCPF_E_TIMEOUT:
 666                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fwcheck);
 667                 break;
 668
 669         case IOCPF_E_DISABLE:
 670                 del_timer(&ioc->iocpf_timer);
 671                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
 672                 bfa_ioc_pf_disabled(ioc);
 673                 break;
 674
 675         case IOCPF_E_STOP:
 676                 del_timer(&ioc->iocpf_timer);
 677                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
 678                 break;
 679
 680         default:
 681                 bfa_sm_fault(event);
 682         }
 683 }
 684
 685 /**
 686  * Request for semaphore.
 687  */
 688 static void
 689 bfa_iocpf_sm_semwait_entry(struct bfa_iocpf *iocpf)
 690 {
 691         bfa_ioc_hw_sem_get(iocpf->ioc);
 692 }
 693
 694 /**
 695  * Awaiting semaphore for h/w initialzation.
 696  */
 697 static void
 698 bfa_iocpf_sm_semwait(struct bfa_iocpf *iocpf, enum iocpf_event event)
 699 {
 700         struct bfa_ioc *ioc = iocpf->ioc;
 701
 702         switch (event) {
 703         case IOCPF_E_SEMLOCKED:
 704                 if (bfa_ioc_sync_complete(ioc)) {
 705                         bfa_ioc_sync_join(ioc);
 706                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
 707                 } else {
 708                         bfa_nw_ioc_hw_sem_release(ioc);
 709                         mod_timer(&ioc->sem_timer, jiffies +
 710                                 msecs_to_jiffies(BFA_IOC_HWSEM_TOV));
 711                 }
 712                 break;
 713
 714         case IOCPF_E_DISABLE:
 715                 bfa_ioc_hw_sem_get_cancel(ioc);
 716                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
 717                 break;
 718
 719         default:
 720                 bfa_sm_fault(event);
 721         }
 722 }
 723
 724 static void
 725 bfa_iocpf_sm_hwinit_entry(struct bfa_iocpf *iocpf)
 726 {
 727         mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
 728                 msecs_to_jiffies(BFA_IOC_TOV));
 729         bfa_ioc_reset(iocpf->ioc, 0);
 730 }
 731
 732 /**
 733  * Hardware is being initialized. Interrupts are enabled.
 734  * Holding hardware semaphore lock.
 735  */
 736 static void
 737 bfa_iocpf_sm_hwinit(struct bfa_iocpf *iocpf, enum iocpf_event event)
 738 {
 739         struct bfa_ioc *ioc = iocpf->ioc;
 740
 741         switch (event) {
 742         case IOCPF_E_FWREADY:
 743                 del_timer(&ioc->iocpf_timer);
 744                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_enabling);
 745                 break;
 746
 747         case IOCPF_E_INITFAIL:
 748                 del_timer(&ioc->iocpf_timer);
 749                 /*
 750                  * !!! fall through !!!
 751                  */
 752
 753         case IOCPF_E_TIMEOUT:
 754                 bfa_nw_ioc_hw_sem_release(ioc);
 755                 if (event == IOCPF_E_TIMEOUT)
 756                         bfa_ioc_pf_failed(ioc);
 757                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
 758                 break;
 759
 760         case IOCPF_E_DISABLE:
 761                 del_timer(&ioc->iocpf_timer);
 762                 bfa_ioc_sync_leave(ioc);
 763                 bfa_nw_ioc_hw_sem_release(ioc);
 764                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
 765                 break;
 766
 767         default:
 768                 bfa_sm_fault(event);
 769         }
 770 }
 771
 772 static void
 773 bfa_iocpf_sm_enabling_entry(struct bfa_iocpf *iocpf)
 774 {
 775         mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
 776                 msecs_to_jiffies(BFA_IOC_TOV));
 777         bfa_ioc_send_enable(iocpf->ioc);
 778 }
 779
 780 /**
 781  * Host IOC function is being enabled, awaiting response from firmware.
 782  * Semaphore is acquired.
 783  */
 784 static void
 785 bfa_iocpf_sm_enabling(struct bfa_iocpf *iocpf, enum iocpf_event event)
 786 {
 787         struct bfa_ioc *ioc = iocpf->ioc;
 788
 789         switch (event) {
 790         case IOCPF_E_FWRSP_ENABLE:
 791                 del_timer(&ioc->iocpf_timer);
 792                 bfa_nw_ioc_hw_sem_release(ioc);
 793                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_ready);
 794                 break;
 795
 796         case IOCPF_E_INITFAIL:
 797                 del_timer(&ioc->iocpf_timer);
 798                 /*
 799                  * !!! fall through !!!
 800                  */
 801         case IOCPF_E_TIMEOUT:
 802                 bfa_nw_ioc_hw_sem_release(ioc);
 803                 if (event == IOCPF_E_TIMEOUT)
 804                         bfa_ioc_pf_failed(ioc);
 805                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
 806                 break;
 807
 808         case IOCPF_E_DISABLE:
 809                 del_timer(&ioc->iocpf_timer);
 810                 bfa_nw_ioc_hw_sem_release(ioc);
 811                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling);
 812                 break;
 813
 814         case IOCPF_E_FWREADY:
 815                 bfa_ioc_send_enable(ioc);
 816                 break;
 817
 818         default:
 819                 bfa_sm_fault(event);
 820         }
 821 }
 822
 823 static bool
 824 bfa_nw_ioc_is_operational(struct bfa_ioc *ioc)
 825 {
 826         return bfa_fsm_cmp_state(ioc, bfa_ioc_sm_op);
 827 }
 828
 829 static void
 830 bfa_iocpf_sm_ready_entry(struct bfa_iocpf *iocpf)
 831 {
 832         bfa_ioc_pf_enabled(iocpf->ioc);
 833 }
 834
 835 static void
 836 bfa_iocpf_sm_ready(struct bfa_iocpf *iocpf, enum iocpf_event event)
 837 {
 838         struct bfa_ioc *ioc = iocpf->ioc;
 839
 840         switch (event) {
 841         case IOCPF_E_DISABLE:
 842                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling);
 843                 break;
 844
 845         case IOCPF_E_GETATTRFAIL:
 846                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
 847                 break;
 848
 849         case IOCPF_E_FAIL:
 850                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail_sync);
 851                 break;
 852
 853         case IOCPF_E_FWREADY:
 854                 bfa_ioc_pf_failed(ioc);
 855                 if (bfa_nw_ioc_is_operational(ioc))
 856                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail_sync);
 857                 else
 858                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail_sync);
 859                 break;
 860
 861         default:
 862                 bfa_sm_fault(event);
 863         }
 864 }
 865
 866 static void
 867 bfa_iocpf_sm_disabling_entry(struct bfa_iocpf *iocpf)
 868 {
 869         mod_timer(&(iocpf->ioc)->iocpf_timer, jiffies +
 870                 msecs_to_jiffies(BFA_IOC_TOV));
 871         bfa_ioc_send_disable(iocpf->ioc);
 872 }
 873
 874 /**
 875  * IOC is being disabled
 876  */
 877 static void
 878 bfa_iocpf_sm_disabling(struct bfa_iocpf *iocpf, enum iocpf_event event)
 879 {
 880         struct bfa_ioc *ioc = iocpf->ioc;
 881
 882         switch (event) {
 883         case IOCPF_E_FWRSP_DISABLE:
 884         case IOCPF_E_FWREADY:
 885                 del_timer(&ioc->iocpf_timer);
 886                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
 887                 break;
 888
 889         case IOCPF_E_FAIL:
 890                 del_timer(&ioc->iocpf_timer);
 891                 /*
 892                  * !!! fall through !!!
 893                  */
 894
 895         case IOCPF_E_TIMEOUT:
 896                 writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
 897                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
 898                 break;
 899
 900         case IOCPF_E_FWRSP_ENABLE:
 901                 break;
 902
 903         default:
 904                 bfa_sm_fault(event);
 905         }
 906 }
 907
 908 static void
 909 bfa_iocpf_sm_disabling_sync_entry(struct bfa_iocpf *iocpf)
 910 {
 911         bfa_ioc_hw_sem_get(iocpf->ioc);
 912 }
 913
 914 /**
 915  * IOC hb ack request is being removed.
 916  */
 917 static void
 918 bfa_iocpf_sm_disabling_sync(struct bfa_iocpf *iocpf, enum iocpf_event event)
 919 {
 920         struct bfa_ioc *ioc = iocpf->ioc;
 921
 922         switch (event) {
 923         case IOCPF_E_SEMLOCKED:
 924                 bfa_ioc_sync_leave(ioc);
 925                 bfa_nw_ioc_hw_sem_release(ioc);
 926                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
 927                 break;
 928
 929         case IOCPF_E_FAIL:
 930                 break;
 931
 932         default:
 933                 bfa_sm_fault(event);
 934         }
 935 }
 936
 937 /**
 938  * IOC disable completion entry.
 939  */
 940 static void
 941 bfa_iocpf_sm_disabled_entry(struct bfa_iocpf *iocpf)
 942 {
 943         bfa_ioc_mbox_flush(iocpf->ioc);
 944         bfa_ioc_pf_disabled(iocpf->ioc);
 945 }
 946
 947 static void
 948 bfa_iocpf_sm_disabled(struct bfa_iocpf *iocpf, enum iocpf_event event)
 949 {
 950         struct bfa_ioc *ioc = iocpf->ioc;
 951
 952         switch (event) {
 953         case IOCPF_E_ENABLE:
 954                 iocpf->retry_count = 0;
 955                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_semwait);
 956                 break;
 957
 958         case IOCPF_E_STOP:
 959                 bfa_ioc_firmware_unlock(ioc);
 960                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
 961                 break;
 962
 963         default:
 964                 bfa_sm_fault(event);
 965         }
 966 }
 967
 968 static void
 969 bfa_iocpf_sm_initfail_sync_entry(struct bfa_iocpf *iocpf)
 970 {
 971         bfa_ioc_hw_sem_get(iocpf->ioc);
 972 }
 973
 974 /**
 975  * Hardware initialization failed.
 976  */
 977 static void
 978 bfa_iocpf_sm_initfail_sync(struct bfa_iocpf *iocpf, enum iocpf_event event)
 979 {
 980         struct bfa_ioc *ioc = iocpf->ioc;
 981
 982         switch (event) {
 983         case IOCPF_E_SEMLOCKED:
 984                 bfa_ioc_notify_fail(ioc);
 985                 bfa_ioc_sync_ack(ioc);
 986                 iocpf->retry_count++;
 987                 if (iocpf->retry_count >= BFA_IOC_HWINIT_MAX) {
 988                         bfa_ioc_sync_leave(ioc);
 989                         bfa_nw_ioc_hw_sem_release(ioc);
 990                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_initfail);
 991                 } else {
 992                         if (bfa_ioc_sync_complete(ioc))
 993                                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
 994                         else {
 995                                 bfa_nw_ioc_hw_sem_release(ioc);
 996                                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_semwait);
 997                         }
 998                 }
 999                 break;
1000
1001         case IOCPF_E_DISABLE:
1002                 bfa_ioc_hw_sem_get_cancel(ioc);
1003                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
1004                 break;
1005
1006         case IOCPF_E_STOP:
1007                 bfa_ioc_hw_sem_get_cancel(ioc);
1008                 bfa_ioc_firmware_unlock(ioc);
1009                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
1010                 break;
1011
1012         case IOCPF_E_FAIL:
1013                 break;
1014
1015         default:
1016                 bfa_sm_fault(event);
1017         }
1018 }
1019
1020 static void
1021 bfa_iocpf_sm_initfail_entry(struct bfa_iocpf *iocpf)
1022 {
1023         bfa_ioc_pf_initfailed(iocpf->ioc);
1024 }
1025
1026 /**
1027  * Hardware initialization failed.
1028  */
1029 static void
1030 bfa_iocpf_sm_initfail(struct bfa_iocpf *iocpf, enum iocpf_event event)
1031 {
1032         struct bfa_ioc *ioc = iocpf->ioc;
1033
1034         switch (event) {
1035         case IOCPF_E_DISABLE:
1036                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
1037                 break;
1038
1039         case IOCPF_E_STOP:
1040                 bfa_ioc_firmware_unlock(ioc);
1041                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_reset);
1042                 break;
1043
1044         default:
1045                 bfa_sm_fault(event);
1046         }
1047 }
1048
1049 static void
1050 bfa_iocpf_sm_fail_sync_entry(struct bfa_iocpf *iocpf)
1051 {
1052         /**
1053          * Mark IOC as failed in hardware and stop firmware.
1054          */
1055         bfa_ioc_lpu_stop(iocpf->ioc);
1056
1057         /**
1058          * Flush any queued up mailbox requests.
1059          */
1060         bfa_ioc_mbox_flush(iocpf->ioc);
1061         bfa_ioc_hw_sem_get(iocpf->ioc);
1062 }
1063
1064 /**
1065  * IOC is in failed state.
1066  */
1067 static void
1068 bfa_iocpf_sm_fail_sync(struct bfa_iocpf *iocpf, enum iocpf_event event)
1069 {
1070         struct bfa_ioc *ioc = iocpf->ioc;
1071
1072         switch (event) {
1073         case IOCPF_E_SEMLOCKED:
1074                 iocpf->retry_count = 0;
1075                 bfa_ioc_sync_ack(ioc);
1076                 bfa_ioc_notify_fail(ioc);
1077                 if (!iocpf->auto_recover) {
1078                         bfa_ioc_sync_leave(ioc);
1079                         bfa_nw_ioc_hw_sem_release(ioc);
1080                         bfa_fsm_set_state(iocpf, bfa_iocpf_sm_fail);
1081                 } else {
1082                         if (bfa_ioc_sync_complete(ioc))
1083                                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_hwinit);
1084                         else {
1085                                 bfa_nw_ioc_hw_sem_release(ioc);
1086                                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_semwait);
1087                         }
1088                 }
1089                 break;
1090
1091         case IOCPF_E_DISABLE:
1092                 bfa_ioc_hw_sem_get_cancel(ioc);
1093                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabling_sync);
1094                 break;
1095
1096         case IOCPF_E_FAIL:
1097                 break;
1098
1099         default:
1100                 bfa_sm_fault(event);
1101         }
1102 }
1103
1104 static void
1105 bfa_iocpf_sm_fail_entry(struct bfa_iocpf *iocpf)
1106 {
1107 }
1108
1109 /**
1110  * @brief
1111  * IOC is in failed state.
1112  */
1113 static void
1114 bfa_iocpf_sm_fail(struct bfa_iocpf *iocpf, enum iocpf_event event)
1115 {
1116         switch (event) {
1117         case IOCPF_E_DISABLE:
1118                 bfa_fsm_set_state(iocpf, bfa_iocpf_sm_disabled);
1119                 break;
1120
1121         default:
1122                 bfa_sm_fault(event);
1123         }
1124 }
1125
1126 /**
1127  * BFA IOC private functions
1128  */
1129
1130 /**
1131  * Notify common modules registered for notification.
1132  */
1133 static void
1134 bfa_ioc_event_notify(struct bfa_ioc *ioc, enum bfa_ioc_event event)
1135 {
1136         struct bfa_ioc_notify *notify;
1137         struct list_head                        *qe;
1138
1139         list_for_each(qe, &ioc->notify_q) {
1140                 notify = (struct bfa_ioc_notify *)qe;
1141                 notify->cbfn(notify->cbarg, event);
1142         }
1143 }
1144
1145 static void
1146 bfa_ioc_disable_comp(struct bfa_ioc *ioc)
1147 {
1148         ioc->cbfn->disable_cbfn(ioc->bfa);
1149         bfa_ioc_event_notify(ioc, BFA_IOC_E_DISABLED);
1150 }
1151
1152 bool
1153 bfa_nw_ioc_sem_get(void __iomem *sem_reg)
1154 {
1155         u32 r32;
1156         int cnt = 0;
1157 #define BFA_SEM_SPINCNT 3000
1158
1159         r32 = readl(sem_reg);
1160
1161         while (r32 && (cnt < BFA_SEM_SPINCNT)) {
1162                 cnt++;
1163                 udelay(2);
1164                 r32 = readl(sem_reg);
1165         }
1166
1167         if (r32 == 0)
1168                 return true;
1169
1170         BUG_ON(!(cnt < BFA_SEM_SPINCNT));
1171         return false;
1172 }
1173
1174 void
1175 bfa_nw_ioc_sem_release(void __iomem *sem_reg)
1176 {
1177         writel(1, sem_reg);
1178 }
1179
1180 static void
1181 bfa_ioc_hw_sem_init(struct bfa_ioc *ioc)
1182 {
1183         struct bfi_ioc_image_hdr fwhdr;
1184         u32 fwstate = readl(ioc->ioc_regs.ioc_fwstate);
1185
1186         if (fwstate == BFI_IOC_UNINIT)
1187                 return;
1188
1189         bfa_nw_ioc_fwver_get(ioc, &fwhdr);
1190
1191         if (swab32(fwhdr.exec) == BFI_FWBOOT_TYPE_NORMAL)
1192                 return;
1193
1194         writel(BFI_IOC_UNINIT, ioc->ioc_regs.ioc_fwstate);
1195
1196         /*
1197          * Try to lock and then unlock the semaphore.
1198          */
1199         readl(ioc->ioc_regs.ioc_sem_reg);
1200         writel(1, ioc->ioc_regs.ioc_sem_reg);
1201 }
1202
1203 static void
1204 bfa_ioc_hw_sem_get(struct bfa_ioc *ioc)
1205 {
1206         u32     r32;
1207
1208         /**
1209          * First read to the semaphore register will return 0, subsequent reads
1210          * will return 1. Semaphore is released by writing 1 to the register
1211          */
1212         r32 = readl(ioc->ioc_regs.ioc_sem_reg);
1213         if (r32 == 0) {
1214                 bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_SEMLOCKED);
1215                 return;
1216         }
1217
1218         mod_timer(&ioc->sem_timer, jiffies +
1219                 msecs_to_jiffies(BFA_IOC_HWSEM_TOV));
1220 }
1221
1222 void
1223 bfa_nw_ioc_hw_sem_release(struct bfa_ioc *ioc)
1224 {
1225         writel(1, ioc->ioc_regs.ioc_sem_reg);
1226 }
1227
1228 static void
1229 bfa_ioc_hw_sem_get_cancel(struct bfa_ioc *ioc)
1230 {
1231         del_timer(&ioc->sem_timer);
1232 }
1233
1234 /**
1235  * @brief
1236  * Initialize LPU local memory (aka secondary memory / SRAM)
1237  */
1238 static void
1239 bfa_ioc_lmem_init(struct bfa_ioc *ioc)
1240 {
1241         u32     pss_ctl;
1242         int             i;
1243 #define PSS_LMEM_INIT_TIME  10000
1244
1245         pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
1246         pss_ctl &= ~__PSS_LMEM_RESET;
1247         pss_ctl |= __PSS_LMEM_INIT_EN;
1248
1249         /*
1250          * i2c workaround 12.5khz clock
1251          */
1252         pss_ctl |= __PSS_I2C_CLK_DIV(3UL);
1253         writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);
1254
1255         /**
1256          * wait for memory initialization to be complete
1257          */
1258         i = 0;
1259         do {
1260                 pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
1261                 i++;
1262         } while (!(pss_ctl & __PSS_LMEM_INIT_DONE) && (i < PSS_LMEM_INIT_TIME));
1263
1264         /**
1265          * If memory initialization is not successful, IOC timeout will catch
1266          * such failures.
1267          */
1268         BUG_ON(!(pss_ctl & __PSS_LMEM_INIT_DONE));
1269
1270         pss_ctl &= ~(__PSS_LMEM_INIT_DONE | __PSS_LMEM_INIT_EN);
1271         writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);
1272 }
1273
1274 static void
1275 bfa_ioc_lpu_start(struct bfa_ioc *ioc)
1276 {
1277         u32     pss_ctl;
1278
1279         /**
1280          * Take processor out of reset.
1281          */
1282         pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
1283         pss_ctl &= ~__PSS_LPU0_RESET;
1284
1285         writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);
1286 }
1287
1288 static void
1289 bfa_ioc_lpu_stop(struct bfa_ioc *ioc)
1290 {
1291         u32     pss_ctl;
1292
1293         /**
1294          * Put processors in reset.
1295          */
1296         pss_ctl = readl(ioc->ioc_regs.pss_ctl_reg);
1297         pss_ctl |= (__PSS_LPU0_RESET | __PSS_LPU1_RESET);
1298
1299         writel(pss_ctl, ioc->ioc_regs.pss_ctl_reg);
1300 }
1301
1302 /**
1303  * Get driver and firmware versions.
1304  */
1305 void
1306 bfa_nw_ioc_fwver_get(struct bfa_ioc *ioc, struct bfi_ioc_image_hdr *fwhdr)
1307 {
1308         u32     pgnum;
1309         u32     loff = 0;
1310         int             i;
1311         u32     *fwsig = (u32 *) fwhdr;
1312
1313         pgnum = bfa_ioc_smem_pgnum(ioc, loff);
1314         writel(pgnum, ioc->ioc_regs.host_page_num_fn);
1315
1316         for (i = 0; i < (sizeof(struct bfi_ioc_image_hdr) / sizeof(u32));
1317              i++) {
1318                 fwsig[i] =
1319                         swab32(readl((loff) + (ioc->ioc_regs.smem_page_start)));
1320                 loff += sizeof(u32);
1321         }
1322 }
1323
1324 /**
1325  * Returns TRUE if same.
1326  */
1327 bool
1328 bfa_nw_ioc_fwver_cmp(struct bfa_ioc *ioc, struct bfi_ioc_image_hdr *fwhdr)
1329 {
1330         struct bfi_ioc_image_hdr *drv_fwhdr;
1331         int i;
1332
1333         drv_fwhdr = (struct bfi_ioc_image_hdr *)
1334                 bfa_cb_image_get_chunk(BFA_IOC_FWIMG_TYPE(ioc), 0);
1335
1336         for (i = 0; i < BFI_IOC_MD5SUM_SZ; i++) {
1337                 if (fwhdr->md5sum[i] != drv_fwhdr->md5sum[i])
1338                         return false;
1339         }
1340
1341         return true;
1342 }
1343
1344 /**
1345  * Return true if current running version is valid. Firmware signature and
1346  * execution context (driver/bios) must match.
1347  */
1348 static bool
1349 bfa_ioc_fwver_valid(struct bfa_ioc *ioc, u32 boot_env)
1350 {
1351         struct bfi_ioc_image_hdr fwhdr, *drv_fwhdr;
1352
1353         bfa_nw_ioc_fwver_get(ioc, &fwhdr);
1354         drv_fwhdr = (struct bfi_ioc_image_hdr *)
1355                 bfa_cb_image_get_chunk(BFA_IOC_FWIMG_TYPE(ioc), 0);
1356
1357         if (fwhdr.signature != drv_fwhdr->signature)
1358                 return false;
1359
1360         if (swab32(fwhdr.param) != boot_env)
1361                 return false;
1362
1363         return bfa_nw_ioc_fwver_cmp(ioc, &fwhdr);
1364 }
1365
1366 /**
1367  * Conditionally flush any pending message from firmware at start.
1368  */
1369 static void
1370 bfa_ioc_msgflush(struct bfa_ioc *ioc)
1371 {
1372         u32     r32;
1373
1374         r32 = readl(ioc->ioc_regs.lpu_mbox_cmd);
1375         if (r32)
1376                 writel(1, ioc->ioc_regs.lpu_mbox_cmd);
1377 }
1378
1379 /**
1380  * @img ioc_init_logic.jpg
1381  */
1382 static void
1383 bfa_ioc_hwinit(struct bfa_ioc *ioc, bool force)
1384 {
1385         enum bfi_ioc_state ioc_fwstate;
1386         bool fwvalid;
1387         u32 boot_env;
1388
1389         ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);
1390
1391         boot_env = BFI_BOOT_LOADER_OS;
1392
1393         if (force)
1394                 ioc_fwstate = BFI_IOC_UNINIT;
1395
1396         /**
1397          * check if firmware is valid
1398          */
1399         fwvalid = (ioc_fwstate == BFI_IOC_UNINIT) ?
1400                 false : bfa_ioc_fwver_valid(ioc, boot_env);
1401
1402         if (!fwvalid) {
1403                 bfa_ioc_boot(ioc, BFI_BOOT_TYPE_NORMAL, boot_env);
1404                 return;
1405         }
1406
1407         /**
1408          * If hardware initialization is in progress (initialized by other IOC),
1409          * just wait for an initialization completion interrupt.
1410          */
1411         if (ioc_fwstate == BFI_IOC_INITING) {
1412                 ioc->cbfn->reset_cbfn(ioc->bfa);
1413                 return;
1414         }
1415
1416         /**
1417          * If IOC function is disabled and firmware version is same,
1418          * just re-enable IOC.
1419          */
1420         if (ioc_fwstate == BFI_IOC_DISABLED || ioc_fwstate == BFI_IOC_OP) {
1421                 /**
1422                  * When using MSI-X any pending firmware ready event should
1423                  * be flushed. Otherwise MSI-X interrupts are not delivered.
1424                  */
1425                 bfa_ioc_msgflush(ioc);
1426                 ioc->cbfn->reset_cbfn(ioc->bfa);
1427                 bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FWREADY);
1428                 return;
1429         }
1430
1431         /**
1432          * Initialize the h/w for any other states.
1433          */
1434         bfa_ioc_boot(ioc, BFI_BOOT_TYPE_NORMAL, boot_env);
1435 }
1436
1437 void
1438 bfa_nw_ioc_timeout(void *ioc_arg)
1439 {
1440         struct bfa_ioc *ioc = (struct bfa_ioc *) ioc_arg;
1441
1442         bfa_fsm_send_event(ioc, IOC_E_TIMEOUT);
1443 }
1444
1445 static void
1446 bfa_ioc_mbox_send(struct bfa_ioc *ioc, void *ioc_msg, int len)
1447 {
1448         u32 *msgp = (u32 *) ioc_msg;
1449         u32 i;
1450
1451         BUG_ON(!(len <= BFI_IOC_MSGLEN_MAX));
1452
1453         /*
1454          * first write msg to mailbox registers
1455          */
1456         for (i = 0; i < len / sizeof(u32); i++)
1457                 writel(cpu_to_le32(msgp[i]),
1458                               ioc->ioc_regs.hfn_mbox + i * sizeof(u32));
1459
1460         for (; i < BFI_IOC_MSGLEN_MAX / sizeof(u32); i++)
1461                 writel(0, ioc->ioc_regs.hfn_mbox + i * sizeof(u32));
1462
1463         /*
1464          * write 1 to mailbox CMD to trigger LPU event
1465          */
1466         writel(1, ioc->ioc_regs.hfn_mbox_cmd);
1467         (void) readl(ioc->ioc_regs.hfn_mbox_cmd);
1468 }
1469
1470 static void
1471 bfa_ioc_send_enable(struct bfa_ioc *ioc)
1472 {
1473         struct bfi_ioc_ctrl_req enable_req;
1474         struct timeval tv;
1475
1476         bfi_h2i_set(enable_req.mh, BFI_MC_IOC, BFI_IOC_H2I_ENABLE_REQ,
1477                     bfa_ioc_portid(ioc));
1478         enable_req.ioc_class = ioc->ioc_mc;
1479         do_gettimeofday(&tv);
1480         enable_req.tv_sec = ntohl(tv.tv_sec);
1481         bfa_ioc_mbox_send(ioc, &enable_req, sizeof(struct bfi_ioc_ctrl_req));
1482 }
1483
1484 static void
1485 bfa_ioc_send_disable(struct bfa_ioc *ioc)
1486 {
1487         struct bfi_ioc_ctrl_req disable_req;
1488
1489         bfi_h2i_set(disable_req.mh, BFI_MC_IOC, BFI_IOC_H2I_DISABLE_REQ,
1490                     bfa_ioc_portid(ioc));
1491         bfa_ioc_mbox_send(ioc, &disable_req, sizeof(struct bfi_ioc_ctrl_req));
1492 }
1493
1494 static void
1495 bfa_ioc_send_getattr(struct bfa_ioc *ioc)
1496 {
1497         struct bfi_ioc_getattr_req attr_req;
1498
1499         bfi_h2i_set(attr_req.mh, BFI_MC_IOC, BFI_IOC_H2I_GETATTR_REQ,
1500                     bfa_ioc_portid(ioc));
1501         bfa_dma_be_addr_set(attr_req.attr_addr, ioc->attr_dma.pa);
1502         bfa_ioc_mbox_send(ioc, &attr_req, sizeof(attr_req));
1503 }
1504
1505 void
1506 bfa_nw_ioc_hb_check(void *cbarg)
1507 {
1508         struct bfa_ioc *ioc = cbarg;
1509         u32     hb_count;
1510
1511         hb_count = readl(ioc->ioc_regs.heartbeat);
1512         if (ioc->hb_count == hb_count) {
1513                 bfa_ioc_recover(ioc);
1514                 return;
1515         } else {
1516                 ioc->hb_count = hb_count;
1517         }
1518
1519         bfa_ioc_mbox_poll(ioc);
1520         mod_timer(&ioc->hb_timer, jiffies +
1521                 msecs_to_jiffies(BFA_IOC_HB_TOV));
1522 }
1523
1524 static void
1525 bfa_ioc_hb_monitor(struct bfa_ioc *ioc)
1526 {
1527         ioc->hb_count = readl(ioc->ioc_regs.heartbeat);
1528         mod_timer(&ioc->hb_timer, jiffies +
1529                 msecs_to_jiffies(BFA_IOC_HB_TOV));
1530 }
1531
1532 static void
1533 bfa_ioc_hb_stop(struct bfa_ioc *ioc)
1534 {
1535         del_timer(&ioc->hb_timer);
1536 }
1537
1538 /**
1539  * @brief
1540  *      Initiate a full firmware download.
1541  */
1542 static void
1543 bfa_ioc_download_fw(struct bfa_ioc *ioc, u32 boot_type,
1544                     u32 boot_env)
1545 {
1546         u32 *fwimg;
1547         u32 pgnum;
1548         u32 loff = 0;
1549         u32 chunkno = 0;
1550         u32 i;
1551
1552         /**
1553          * Initialize LMEM first before code download
1554          */
1555         bfa_ioc_lmem_init(ioc);
1556
1557         fwimg = bfa_cb_image_get_chunk(BFA_IOC_FWIMG_TYPE(ioc), chunkno);
1558
1559         pgnum = bfa_ioc_smem_pgnum(ioc, loff);
1560
1561         writel(pgnum, ioc->ioc_regs.host_page_num_fn);
1562
1563         for (i = 0; i < bfa_cb_image_get_size(BFA_IOC_FWIMG_TYPE(ioc)); i++) {
1564                 if (BFA_IOC_FLASH_CHUNK_NO(i) != chunkno) {
1565                         chunkno = BFA_IOC_FLASH_CHUNK_NO(i);
1566                         fwimg = bfa_cb_image_get_chunk(BFA_IOC_FWIMG_TYPE(ioc),
1567                                         BFA_IOC_FLASH_CHUNK_ADDR(chunkno));
1568                 }
1569
1570                 /**
1571                  * write smem
1572                  */
1573                 writel((swab32(fwimg[BFA_IOC_FLASH_OFFSET_IN_CHUNK(i)])),
1574                               ((ioc->ioc_regs.smem_page_start) + (loff)));
1575
1576                 loff += sizeof(u32);
1577
1578                 /**
1579                  * handle page offset wrap around
1580                  */
1581                 loff = PSS_SMEM_PGOFF(loff);
1582                 if (loff == 0) {
1583                         pgnum++;
1584                         writel(pgnum,
1585                                       ioc->ioc_regs.host_page_num_fn);
1586                 }
1587         }
1588
1589         writel(bfa_ioc_smem_pgnum(ioc, 0),
1590                       ioc->ioc_regs.host_page_num_fn);
1591
1592         /*
1593          * Set boot type and boot param at the end.
1594         */
1595         writel(boot_type, ((ioc->ioc_regs.smem_page_start)
1596                         + (BFI_BOOT_TYPE_OFF)));
1597         writel(boot_env, ((ioc->ioc_regs.smem_page_start)
1598                         + (BFI_BOOT_LOADER_OFF)));
1599 }
1600
1601 static void
1602 bfa_ioc_reset(struct bfa_ioc *ioc, bool force)
1603 {
1604         bfa_ioc_hwinit(ioc, force);
1605 }
1606
1607 /**
1608  * @brief
1609  * Update BFA configuration from firmware configuration.
1610  */
1611 static void
1612 bfa_ioc_getattr_reply(struct bfa_ioc *ioc)
1613 {
1614         struct bfi_ioc_attr *attr = ioc->attr;
1615
1616         attr->adapter_prop  = ntohl(attr->adapter_prop);
1617         attr->card_type     = ntohl(attr->card_type);
1618         attr->maxfrsize     = ntohs(attr->maxfrsize);
1619
1620         bfa_fsm_send_event(ioc, IOC_E_FWRSP_GETATTR);
1621 }
1622
1623 /**
1624  * Attach time initialization of mbox logic.
1625  */
1626 static void
1627 bfa_ioc_mbox_attach(struct bfa_ioc *ioc)
1628 {
1629         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
1630         int     mc;
1631
1632         INIT_LIST_HEAD(&mod->cmd_q);
1633         for (mc = 0; mc < BFI_MC_MAX; mc++) {
1634                 mod->mbhdlr[mc].cbfn = NULL;
1635                 mod->mbhdlr[mc].cbarg = ioc->bfa;
1636         }
1637 }
1638
1639 /**
1640  * Mbox poll timer -- restarts any pending mailbox requests.
1641  */
1642 static void
1643 bfa_ioc_mbox_poll(struct bfa_ioc *ioc)
1644 {
1645         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
1646         struct bfa_mbox_cmd *cmd;
1647         u32                     stat;
1648
1649         /**
1650          * If no command pending, do nothing
1651          */
1652         if (list_empty(&mod->cmd_q))
1653                 return;
1654
1655         /**
1656          * If previous command is not yet fetched by firmware, do nothing
1657          */
1658         stat = readl(ioc->ioc_regs.hfn_mbox_cmd);
1659         if (stat)
1660                 return;
1661
1662         /**
1663          * Enqueue command to firmware.
1664          */
1665         bfa_q_deq(&mod->cmd_q, &cmd);
1666         bfa_ioc_mbox_send(ioc, cmd->msg, sizeof(cmd->msg));
1667 }
1668
1669 /**
1670  * Cleanup any pending requests.
1671  */
1672 static void
1673 bfa_ioc_mbox_flush(struct bfa_ioc *ioc)
1674 {
1675         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
1676         struct bfa_mbox_cmd *cmd;
1677
1678         while (!list_empty(&mod->cmd_q))
1679                 bfa_q_deq(&mod->cmd_q, &cmd);
1680 }
1681
1682 static void
1683 bfa_ioc_fail_notify(struct bfa_ioc *ioc)
1684 {
1685         /**
1686          * Notify driver and common modules registered for notification.
1687          */
1688         ioc->cbfn->hbfail_cbfn(ioc->bfa);
1689         bfa_ioc_event_notify(ioc, BFA_IOC_E_FAILED);
1690 }
1691
1692 static void
1693 bfa_ioc_pf_enabled(struct bfa_ioc *ioc)
1694 {
1695         bfa_fsm_send_event(ioc, IOC_E_ENABLED);
1696 }
1697
1698 static void
1699 bfa_ioc_pf_disabled(struct bfa_ioc *ioc)
1700 {
1701         bfa_fsm_send_event(ioc, IOC_E_DISABLED);
1702 }
1703
1704 static void
1705 bfa_ioc_pf_initfailed(struct bfa_ioc *ioc)
1706 {
1707         bfa_fsm_send_event(ioc, IOC_E_INITFAILED);
1708 }
1709
1710 static void
1711 bfa_ioc_pf_failed(struct bfa_ioc *ioc)
1712 {
1713         bfa_fsm_send_event(ioc, IOC_E_PFFAILED);
1714 }
1715
1716 static void
1717 bfa_ioc_pf_fwmismatch(struct bfa_ioc *ioc)
1718 {
1719         /**
1720          * Provide enable completion callback and AEN notification.
1721          */
1722         ioc->cbfn->enable_cbfn(ioc->bfa, BFA_STATUS_IOC_FAILURE);
1723 }
1724
1725 /**
1726  * IOC public
1727  */
1728 static enum bfa_status
1729 bfa_ioc_pll_init(struct bfa_ioc *ioc)
1730 {
1731         /*
1732          *  Hold semaphore so that nobody can access the chip during init.
1733          */
1734         bfa_nw_ioc_sem_get(ioc->ioc_regs.ioc_init_sem_reg);
1735
1736         bfa_ioc_pll_init_asic(ioc);
1737
1738         ioc->pllinit = true;
1739         /*
1740          *  release semaphore.
1741          */
1742         bfa_nw_ioc_sem_release(ioc->ioc_regs.ioc_init_sem_reg);
1743
1744         return BFA_STATUS_OK;
1745 }
1746
1747 /**
1748  * Interface used by diag module to do firmware boot with memory test
1749  * as the entry vector.
1750  */
1751 static void
1752 bfa_ioc_boot(struct bfa_ioc *ioc, u32 boot_type, u32 boot_env)
1753 {
1754         void __iomem *rb;
1755
1756         bfa_ioc_stats(ioc, ioc_boots);
1757
1758         if (bfa_ioc_pll_init(ioc) != BFA_STATUS_OK)
1759                 return;
1760
1761         /**
1762          * Initialize IOC state of all functions on a chip reset.
1763          */
1764         rb = ioc->pcidev.pci_bar_kva;
1765         if (boot_type == BFI_BOOT_TYPE_MEMTEST) {
1766                 writel(BFI_IOC_MEMTEST, (rb + BFA_IOC0_STATE_REG));
1767                 writel(BFI_IOC_MEMTEST, (rb + BFA_IOC1_STATE_REG));
1768         } else {
1769                 writel(BFI_IOC_INITING, (rb + BFA_IOC0_STATE_REG));
1770                 writel(BFI_IOC_INITING, (rb + BFA_IOC1_STATE_REG));
1771         }
1772
1773         bfa_ioc_msgflush(ioc);
1774         bfa_ioc_download_fw(ioc, boot_type, boot_env);
1775
1776         /**
1777          * Enable interrupts just before starting LPU
1778          */
1779         ioc->cbfn->reset_cbfn(ioc->bfa);
1780         bfa_ioc_lpu_start(ioc);
1781 }
1782
1783 /**
1784  * Enable/disable IOC failure auto recovery.
1785  */
1786 void
1787 bfa_nw_ioc_auto_recover(bool auto_recover)
1788 {
1789         bfa_nw_auto_recover = auto_recover;
1790 }
1791
1792 static void
1793 bfa_ioc_msgget(struct bfa_ioc *ioc, void *mbmsg)
1794 {
1795         u32     *msgp = mbmsg;
1796         u32     r32;
1797         int             i;
1798
1799         /**
1800          * read the MBOX msg
1801          */
1802         for (i = 0; i < (sizeof(union bfi_ioc_i2h_msg_u) / sizeof(u32));
1803              i++) {
1804                 r32 = readl(ioc->ioc_regs.lpu_mbox +
1805                                    i * sizeof(u32));
1806                 msgp[i] = htonl(r32);
1807         }
1808
1809         /**
1810          * turn off mailbox interrupt by clearing mailbox status
1811          */
1812         writel(1, ioc->ioc_regs.lpu_mbox_cmd);
1813         readl(ioc->ioc_regs.lpu_mbox_cmd);
1814 }
1815
1816 static void
1817 bfa_ioc_isr(struct bfa_ioc *ioc, struct bfi_mbmsg *m)
1818 {
1819         union bfi_ioc_i2h_msg_u *msg;
1820         struct bfa_iocpf *iocpf = &ioc->iocpf;
1821
1822         msg = (union bfi_ioc_i2h_msg_u *) m;
1823
1824         bfa_ioc_stats(ioc, ioc_isrs);
1825
1826         switch (msg->mh.msg_id) {
1827         case BFI_IOC_I2H_HBEAT:
1828                 break;
1829
1830         case BFI_IOC_I2H_READY_EVENT:
1831                 bfa_fsm_send_event(iocpf, IOCPF_E_FWREADY);
1832                 break;
1833
1834         case BFI_IOC_I2H_ENABLE_REPLY:
1835                 bfa_fsm_send_event(iocpf, IOCPF_E_FWRSP_ENABLE);
1836                 break;
1837
1838         case BFI_IOC_I2H_DISABLE_REPLY:
1839                 bfa_fsm_send_event(iocpf, IOCPF_E_FWRSP_DISABLE);
1840                 break;
1841
1842         case BFI_IOC_I2H_GETATTR_REPLY:
1843                 bfa_ioc_getattr_reply(ioc);
1844                 break;
1845
1846         default:
1847                 BUG_ON(1);
1848         }
1849 }
1850
1851 /**
1852  * IOC attach time initialization and setup.
1853  *
1854  * @param[in]   ioc     memory for IOC
1855  * @param[in]   bfa     driver instance structure
1856  */
1857 void
1858 bfa_nw_ioc_attach(struct bfa_ioc *ioc, void *bfa, struct bfa_ioc_cbfn *cbfn)
1859 {
1860         ioc->bfa        = bfa;
1861         ioc->cbfn       = cbfn;
1862         ioc->fcmode     = false;
1863         ioc->pllinit    = false;
1864         ioc->dbg_fwsave_once = true;
1865         ioc->iocpf.ioc  = ioc;
1866
1867         bfa_ioc_mbox_attach(ioc);
1868         INIT_LIST_HEAD(&ioc->notify_q);
1869
1870         bfa_fsm_set_state(ioc, bfa_ioc_sm_uninit);
1871         bfa_fsm_send_event(ioc, IOC_E_RESET);
1872 }
1873
1874 /**
1875  * Driver detach time IOC cleanup.
1876  */
1877 void
1878 bfa_nw_ioc_detach(struct bfa_ioc *ioc)
1879 {
1880         bfa_fsm_send_event(ioc, IOC_E_DETACH);
1881 }
1882
1883 /**
1884  * Setup IOC PCI properties.
1885  *
1886  * @param[in]   pcidev  PCI device information for this IOC
1887  */
1888 void
1889 bfa_nw_ioc_pci_init(struct bfa_ioc *ioc, struct bfa_pcidev *pcidev,
1890                  enum bfi_mclass mc)
1891 {
1892         ioc->ioc_mc     = mc;
1893         ioc->pcidev     = *pcidev;
1894         ioc->ctdev      = bfa_asic_id_ct(ioc->pcidev.device_id);
1895         ioc->cna        = ioc->ctdev && !ioc->fcmode;
1896
1897         bfa_nw_ioc_set_ct_hwif(ioc);
1898
1899         bfa_ioc_map_port(ioc);
1900         bfa_ioc_reg_init(ioc);
1901 }
1902
1903 /**
1904  * Initialize IOC dma memory
1905  *
1906  * @param[in]   dm_kva  kernel virtual address of IOC dma memory
1907  * @param[in]   dm_pa   physical address of IOC dma memory
1908  */
1909 void
1910 bfa_nw_ioc_mem_claim(struct bfa_ioc *ioc,  u8 *dm_kva, u64 dm_pa)
1911 {
1912         /**
1913          * dma memory for firmware attribute
1914          */
1915         ioc->attr_dma.kva = dm_kva;
1916         ioc->attr_dma.pa = dm_pa;
1917         ioc->attr = (struct bfi_ioc_attr *) dm_kva;
1918 }
1919
1920 /**
1921  * Return size of dma memory required.
1922  */
1923 u32
1924 bfa_nw_ioc_meminfo(void)
1925 {
1926         return roundup(sizeof(struct bfi_ioc_attr), BFA_DMA_ALIGN_SZ);
1927 }
1928
1929 void
1930 bfa_nw_ioc_enable(struct bfa_ioc *ioc)
1931 {
1932         bfa_ioc_stats(ioc, ioc_enables);
1933         ioc->dbg_fwsave_once = true;
1934
1935         bfa_fsm_send_event(ioc, IOC_E_ENABLE);
1936 }
1937
1938 void
1939 bfa_nw_ioc_disable(struct bfa_ioc *ioc)
1940 {
1941         bfa_ioc_stats(ioc, ioc_disables);
1942         bfa_fsm_send_event(ioc, IOC_E_DISABLE);
1943 }
1944
1945 static u32
1946 bfa_ioc_smem_pgnum(struct bfa_ioc *ioc, u32 fmaddr)
1947 {
1948         return PSS_SMEM_PGNUM(ioc->ioc_regs.smem_pg0, fmaddr);
1949 }
1950
1951 /**
1952  * Register mailbox message handler function, to be called by common modules
1953  */
1954 void
1955 bfa_nw_ioc_mbox_regisr(struct bfa_ioc *ioc, enum bfi_mclass mc,
1956                     bfa_ioc_mbox_mcfunc_t cbfn, void *cbarg)
1957 {
1958         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
1959
1960         mod->mbhdlr[mc].cbfn    = cbfn;
1961         mod->mbhdlr[mc].cbarg = cbarg;
1962 }
1963
1964 /**
1965  * Queue a mailbox command request to firmware. Waits if mailbox is busy.
1966  * Responsibility of caller to serialize
1967  *
1968  * @param[in]   ioc     IOC instance
1969  * @param[i]    cmd     Mailbox command
1970  */
1971 void
1972 bfa_nw_ioc_mbox_queue(struct bfa_ioc *ioc, struct bfa_mbox_cmd *cmd)
1973 {
1974         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
1975         u32                     stat;
1976
1977         /**
1978          * If a previous command is pending, queue new command
1979          */
1980         if (!list_empty(&mod->cmd_q)) {
1981                 list_add_tail(&cmd->qe, &mod->cmd_q);
1982                 return;
1983         }
1984
1985         /**
1986          * If mailbox is busy, queue command for poll timer
1987          */
1988         stat = readl(ioc->ioc_regs.hfn_mbox_cmd);
1989         if (stat) {
1990                 list_add_tail(&cmd->qe, &mod->cmd_q);
1991                 return;
1992         }
1993
1994         /**
1995          * mailbox is free -- queue command to firmware
1996          */
1997         bfa_ioc_mbox_send(ioc, cmd->msg, sizeof(cmd->msg));
1998
1999         return;
2000 }
2001
2002 /**
2003  * Handle mailbox interrupts
2004  */
2005 void
2006 bfa_nw_ioc_mbox_isr(struct bfa_ioc *ioc)
2007 {
2008         struct bfa_ioc_mbox_mod *mod = &ioc->mbox_mod;
2009         struct bfi_mbmsg m;
2010         int                             mc;
2011
2012         bfa_ioc_msgget(ioc, &m);
2013
2014         /**
2015          * Treat IOC message class as special.
2016          */
2017         mc = m.mh.msg_class;
2018         if (mc == BFI_MC_IOC) {
2019                 bfa_ioc_isr(ioc, &m);
2020                 return;
2021         }
2022
2023         if ((mc >= BFI_MC_MAX) || (mod->mbhdlr[mc].cbfn == NULL))
2024                 return;
2025
2026         mod->mbhdlr[mc].cbfn(mod->mbhdlr[mc].cbarg, &m);
2027 }
2028
2029 void
2030 bfa_nw_ioc_error_isr(struct bfa_ioc *ioc)
2031 {
2032         bfa_ioc_stats(ioc, ioc_hbfails);
2033         bfa_ioc_stats_hb_count(ioc, ioc->hb_count);
2034         bfa_fsm_send_event(ioc, IOC_E_HWERROR);
2035 }
2036
2037 /**
2038  * return true if IOC is disabled
2039  */
2040 bool
2041 bfa_nw_ioc_is_disabled(struct bfa_ioc *ioc)
2042 {
2043         return bfa_fsm_cmp_state(ioc, bfa_ioc_sm_disabling) ||
2044                 bfa_fsm_cmp_state(ioc, bfa_ioc_sm_disabled);
2045 }
2046
2047 /**
2048  * Add to IOC heartbeat failure notification queue. To be used by common
2049  * modules such as cee, port, diag.
2050  */
2051 void
2052 bfa_nw_ioc_notify_register(struct bfa_ioc *ioc,
2053                         struct bfa_ioc_notify *notify)
2054 {
2055         list_add_tail(&notify->qe, &ioc->notify_q);
2056 }
2057
2058 #define BFA_MFG_NAME "Brocade"
2059 static void
2060 bfa_ioc_get_adapter_attr(struct bfa_ioc *ioc,
2061                          struct bfa_adapter_attr *ad_attr)
2062 {
2063         struct bfi_ioc_attr *ioc_attr;
2064
2065         ioc_attr = ioc->attr;
2066
2067         bfa_ioc_get_adapter_serial_num(ioc, ad_attr->serial_num);
2068         bfa_ioc_get_adapter_fw_ver(ioc, ad_attr->fw_ver);
2069         bfa_ioc_get_adapter_optrom_ver(ioc, ad_attr->optrom_ver);
2070         bfa_ioc_get_adapter_manufacturer(ioc, ad_attr->manufacturer);
2071         memcpy(&ad_attr->vpd, &ioc_attr->vpd,
2072                       sizeof(struct bfa_mfg_vpd));
2073
2074         ad_attr->nports = bfa_ioc_get_nports(ioc);
2075         ad_attr->max_speed = bfa_ioc_speed_sup(ioc);
2076
2077         bfa_ioc_get_adapter_model(ioc, ad_attr->model);
2078         /* For now, model descr uses same model string */
2079         bfa_ioc_get_adapter_model(ioc, ad_attr->model_descr);
2080
2081         ad_attr->card_type = ioc_attr->card_type;
2082         ad_attr->is_mezz = bfa_mfg_is_mezz(ioc_attr->card_type);
2083
2084         if (BFI_ADAPTER_IS_SPECIAL(ioc_attr->adapter_prop))
2085                 ad_attr->prototype = 1;
2086         else
2087                 ad_attr->prototype = 0;
2088
2089         ad_attr->pwwn = bfa_ioc_get_pwwn(ioc);
2090         ad_attr->mac  = bfa_nw_ioc_get_mac(ioc);
2091
2092         ad_attr->pcie_gen = ioc_attr->pcie_gen;
2093         ad_attr->pcie_lanes = ioc_attr->pcie_lanes;
2094         ad_attr->pcie_lanes_orig = ioc_attr->pcie_lanes_orig;
2095         ad_attr->asic_rev = ioc_attr->asic_rev;
2096
2097         bfa_ioc_get_pci_chip_rev(ioc, ad_attr->hw_ver);
2098
2099         ad_attr->cna_capable = ioc->cna;
2100         ad_attr->trunk_capable = (ad_attr->nports > 1) && !ioc->cna;
2101 }
2102
2103 static enum bfa_ioc_type
2104 bfa_ioc_get_type(struct bfa_ioc *ioc)
2105 {
2106         if (!ioc->ctdev || ioc->fcmode)
2107                 return BFA_IOC_TYPE_FC;
2108         else if (ioc->ioc_mc == BFI_MC_IOCFC)
2109                 return BFA_IOC_TYPE_FCoE;
2110         else if (ioc->ioc_mc == BFI_MC_LL)
2111                 return BFA_IOC_TYPE_LL;
2112         else {
2113                 BUG_ON(!(ioc->ioc_mc == BFI_MC_LL));
2114                 return BFA_IOC_TYPE_LL;
2115         }
2116 }
2117
2118 static void
2119 bfa_ioc_get_adapter_serial_num(struct bfa_ioc *ioc, char *serial_num)
2120 {
2121         memset(serial_num, 0, BFA_ADAPTER_SERIAL_NUM_LEN);
2122         memcpy(serial_num,
2123                         (void *)ioc->attr->brcd_serialnum,
2124                         BFA_ADAPTER_SERIAL_NUM_LEN);
2125 }
2126
2127 static void
2128 bfa_ioc_get_adapter_fw_ver(struct bfa_ioc *ioc, char *fw_ver)
2129 {
2130         memset(fw_ver, 0, BFA_VERSION_LEN);
2131         memcpy(fw_ver, ioc->attr->fw_version, BFA_VERSION_LEN);
2132 }
2133
2134 static void
2135 bfa_ioc_get_pci_chip_rev(struct bfa_ioc *ioc, char *chip_rev)
2136 {
2137         BUG_ON(!(chip_rev));
2138
2139         memset(chip_rev, 0, BFA_IOC_CHIP_REV_LEN);
2140
2141         chip_rev[0] = 'R';
2142         chip_rev[1] = 'e';
2143         chip_rev[2] = 'v';
2144         chip_rev[3] = '-';
2145         chip_rev[4] = ioc->attr->asic_rev;
2146         chip_rev[5] = '\0';
2147 }
2148
2149 static void
2150 bfa_ioc_get_adapter_optrom_ver(struct bfa_ioc *ioc, char *optrom_ver)
2151 {
2152         memset(optrom_ver, 0, BFA_VERSION_LEN);
2153         memcpy(optrom_ver, ioc->attr->optrom_version,
2154                       BFA_VERSION_LEN);
2155 }
2156
2157 static void
2158 bfa_ioc_get_adapter_manufacturer(struct bfa_ioc *ioc, char *manufacturer)
2159 {
2160         memset(manufacturer, 0, BFA_ADAPTER_MFG_NAME_LEN);
2161         memcpy(manufacturer, BFA_MFG_NAME, BFA_ADAPTER_MFG_NAME_LEN);
2162 }
2163
2164 static void
2165 bfa_ioc_get_adapter_model(struct bfa_ioc *ioc, char *model)
2166 {
2167         struct bfi_ioc_attr *ioc_attr;
2168
2169         BUG_ON(!(model));
2170         memset(model, 0, BFA_ADAPTER_MODEL_NAME_LEN);
2171
2172         ioc_attr = ioc->attr;
2173
2174         /**
2175          * model name
2176          */
2177         snprintf(model, BFA_ADAPTER_MODEL_NAME_LEN, "%s-%u",
2178                 BFA_MFG_NAME, ioc_attr->card_type);
2179 }
2180
2181 static enum bfa_ioc_state
2182 bfa_ioc_get_state(struct bfa_ioc *ioc)
2183 {
2184         enum bfa_iocpf_state iocpf_st;
2185         enum bfa_ioc_state ioc_st = bfa_sm_to_state(ioc_sm_table, ioc->fsm);
2186
2187         if (ioc_st == BFA_IOC_ENABLING ||
2188                 ioc_st == BFA_IOC_FAIL || ioc_st == BFA_IOC_INITFAIL) {
2189
2190                 iocpf_st = bfa_sm_to_state(iocpf_sm_table, ioc->iocpf.fsm);
2191
2192                 switch (iocpf_st) {
2193                 case BFA_IOCPF_SEMWAIT:
2194                         ioc_st = BFA_IOC_SEMWAIT;
2195                         break;
2196
2197                 case BFA_IOCPF_HWINIT:
2198                         ioc_st = BFA_IOC_HWINIT;
2199                         break;
2200
2201                 case BFA_IOCPF_FWMISMATCH:
2202                         ioc_st = BFA_IOC_FWMISMATCH;
2203                         break;
2204
2205                 case BFA_IOCPF_FAIL:
2206                         ioc_st = BFA_IOC_FAIL;
2207                         break;
2208
2209                 case BFA_IOCPF_INITFAIL:
2210                         ioc_st = BFA_IOC_INITFAIL;
2211                         break;
2212
2213                 default:
2214                         break;
2215                 }
2216         }
2217         return ioc_st;
2218 }
2219
2220 void
2221 bfa_nw_ioc_get_attr(struct bfa_ioc *ioc, struct bfa_ioc_attr *ioc_attr)
2222 {
2223         memset((void *)ioc_attr, 0, sizeof(struct bfa_ioc_attr));
2224
2225         ioc_attr->state = bfa_ioc_get_state(ioc);
2226         ioc_attr->port_id = ioc->port_id;
2227
2228         ioc_attr->ioc_type = bfa_ioc_get_type(ioc);
2229
2230         bfa_ioc_get_adapter_attr(ioc, &ioc_attr->adapter_attr);
2231
2232         ioc_attr->pci_attr.device_id = ioc->pcidev.device_id;
2233         ioc_attr->pci_attr.pcifn = ioc->pcidev.pci_func;
2234         bfa_ioc_get_pci_chip_rev(ioc, ioc_attr->pci_attr.chip_rev);
2235 }
2236
2237 /**
2238  * WWN public
2239  */
2240 static u64
2241 bfa_ioc_get_pwwn(struct bfa_ioc *ioc)
2242 {
2243         return ioc->attr->pwwn;
2244 }
2245
2246 mac_t
2247 bfa_nw_ioc_get_mac(struct bfa_ioc *ioc)
2248 {
2249         return ioc->attr->mac;
2250 }
2251
2252 /**
2253  * Firmware failure detected. Start recovery actions.
2254  */
2255 static void
2256 bfa_ioc_recover(struct bfa_ioc *ioc)
2257 {
2258         pr_crit("Heart Beat of IOC has failed\n");
2259         bfa_ioc_stats(ioc, ioc_hbfails);
2260         bfa_ioc_stats_hb_count(ioc, ioc->hb_count);
2261         bfa_fsm_send_event(ioc, IOC_E_HBFAIL);
2262 }
2263
2264 static void
2265 bfa_ioc_check_attr_wwns(struct bfa_ioc *ioc)
2266 {
2267         if (bfa_ioc_get_type(ioc) == BFA_IOC_TYPE_LL)
2268                 return;
2269 }
2270
2271 /**
2272  * @dg hal_iocpf_pvt BFA IOC PF private functions
2273  * @{
2274  */
2275
2276 static void
2277 bfa_iocpf_enable(struct bfa_ioc *ioc)
2278 {
2279         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_ENABLE);
2280 }
2281
2282 static void
2283 bfa_iocpf_disable(struct bfa_ioc *ioc)
2284 {
2285         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_DISABLE);
2286 }
2287
2288 static void
2289 bfa_iocpf_fail(struct bfa_ioc *ioc)
2290 {
2291         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_FAIL);
2292 }
2293
2294 static void
2295 bfa_iocpf_initfail(struct bfa_ioc *ioc)
2296 {
2297         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_INITFAIL);
2298 }
2299
2300 static void
2301 bfa_iocpf_getattrfail(struct bfa_ioc *ioc)
2302 {
2303         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_GETATTRFAIL);
2304 }
2305
2306 static void
2307 bfa_iocpf_stop(struct bfa_ioc *ioc)
2308 {
2309         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_STOP);
2310 }
2311
2312 void
2313 bfa_nw_iocpf_timeout(void *ioc_arg)
2314 {
2315         struct bfa_ioc  *ioc = (struct bfa_ioc *) ioc_arg;
2316
2317         bfa_fsm_send_event(&ioc->iocpf, IOCPF_E_TIMEOUT);
2318 }
2319
2320 void
2321 bfa_nw_iocpf_sem_timeout(void *ioc_arg)
2322 {
2323         struct bfa_ioc  *ioc = (struct bfa_ioc *) ioc_arg;
2324
2325         bfa_ioc_hw_sem_get(ioc);
2326 }