drivers/scsi/bfa/bfa_itnim.c

   1 /*
   2  * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
   3  * All rights reserved
   4  * www.brocade.com
   5  *
   6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License (GPL) Version 2 as
  10  * published by the Free Software Foundation
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  */
  17
  18 #include <bfa.h>
  19 #include <bfa_fcpim.h>
  20 #include "bfa_fcpim_priv.h"
  21
  22 BFA_TRC_FILE(HAL, ITNIM);
  23
  24 #define BFA_ITNIM_FROM_TAG(_fcpim, _tag)                                \
  25         ((_fcpim)->itnim_arr + ((_tag) & ((_fcpim)->num_itnims - 1)))
  26
  27 #define bfa_fcpim_additn(__itnim)                                       \
  28         list_add_tail(&(__itnim)->qe, &(__itnim)->fcpim->itnim_q)
  29 #define bfa_fcpim_delitn(__itnim)       do {                            \
  30         bfa_assert(bfa_q_is_on_q(&(__itnim)->fcpim->itnim_q, __itnim));      \
  31         list_del(&(__itnim)->qe);      \
  32         bfa_assert(list_empty(&(__itnim)->io_q));      \
  33         bfa_assert(list_empty(&(__itnim)->io_cleanup_q));      \
  34         bfa_assert(list_empty(&(__itnim)->pending_q));      \
  35 } while (0)
  36
  37 #define bfa_itnim_online_cb(__itnim) do {                               \
  38         if ((__itnim)->bfa->fcs)                                        \
  39                 bfa_cb_itnim_online((__itnim)->ditn);      \
  40         else {                                                          \
  41                 bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe,        \
  42                 __bfa_cb_itnim_online, (__itnim));      \
  43         }                                                               \
  44 } while (0)
  45
  46 #define bfa_itnim_offline_cb(__itnim) do {                              \
  47         if ((__itnim)->bfa->fcs)                                        \
  48                 bfa_cb_itnim_offline((__itnim)->ditn);      \
  49         else {                                                          \
  50                 bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe,        \
  51                 __bfa_cb_itnim_offline, (__itnim));      \
  52         }                                                               \
  53 } while (0)
  54
  55 #define bfa_itnim_sler_cb(__itnim) do {                                 \
  56         if ((__itnim)->bfa->fcs)                                        \
  57                 bfa_cb_itnim_sler((__itnim)->ditn);      \
  58         else {                                                          \
  59                 bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe,        \
  60                 __bfa_cb_itnim_sler, (__itnim));      \
  61         }                                                               \
  62 } while (0)
  63
  64 /*
  65  * forward declarations
  66  */
  67 static void     bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s *itnim);
  68 static bfa_boolean_t bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim);
  69 static bfa_boolean_t bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim);
  70 static void     bfa_itnim_cleanp_comp(void *itnim_cbarg);
  71 static void     bfa_itnim_cleanup(struct bfa_itnim_s *itnim);
  72 static void     __bfa_cb_itnim_online(void *cbarg, bfa_boolean_t complete);
  73 static void     __bfa_cb_itnim_offline(void *cbarg, bfa_boolean_t complete);
  74 static void     __bfa_cb_itnim_sler(void *cbarg, bfa_boolean_t complete);
  75 static void     bfa_itnim_iotov_online(struct bfa_itnim_s *itnim);
  76 static void     bfa_itnim_iotov_cleanup(struct bfa_itnim_s *itnim);
  77 static void     bfa_itnim_iotov(void *itnim_arg);
  78 static void     bfa_itnim_iotov_start(struct bfa_itnim_s *itnim);
  79 static void     bfa_itnim_iotov_stop(struct bfa_itnim_s *itnim);
  80 static void     bfa_itnim_iotov_delete(struct bfa_itnim_s *itnim);
  81
  82 /**
  83  *  bfa_itnim_sm BFA itnim state machine
  84  */
  85
  86
  87 enum bfa_itnim_event {
  88         BFA_ITNIM_SM_CREATE = 1,        /*  itnim is created */
  89         BFA_ITNIM_SM_ONLINE = 2,        /*  itnim is online */
  90         BFA_ITNIM_SM_OFFLINE = 3,       /*  itnim is offline */
  91         BFA_ITNIM_SM_FWRSP = 4,         /*  firmware response */
  92         BFA_ITNIM_SM_DELETE = 5,        /*  deleting an existing itnim */
  93         BFA_ITNIM_SM_CLEANUP = 6,       /*  IO cleanup completion */
  94         BFA_ITNIM_SM_SLER = 7,          /*  second level error recovery */
  95         BFA_ITNIM_SM_HWFAIL = 8,        /*  IOC h/w failure event */
  96         BFA_ITNIM_SM_QRESUME = 9,       /*  queue space available */
  97 };
  98
  99 static void     bfa_itnim_sm_uninit(struct bfa_itnim_s *itnim,
 100                                         enum bfa_itnim_event event);
 101 static void     bfa_itnim_sm_created(struct bfa_itnim_s *itnim,
 102                                          enum bfa_itnim_event event);
 103 static void     bfa_itnim_sm_fwcreate(struct bfa_itnim_s *itnim,
 104                                           enum bfa_itnim_event event);
 105 static void     bfa_itnim_sm_delete_pending(struct bfa_itnim_s *itnim,
 106                                 enum bfa_itnim_event event);
 107 static void     bfa_itnim_sm_online(struct bfa_itnim_s *itnim,
 108                                         enum bfa_itnim_event event);
 109 static void     bfa_itnim_sm_sler(struct bfa_itnim_s *itnim,
 110                                       enum bfa_itnim_event event);
 111 static void     bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s *itnim,
 112                                                  enum bfa_itnim_event event);
 113 static void     bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s *itnim,
 114                                                 enum bfa_itnim_event event);
 115 static void     bfa_itnim_sm_fwdelete(struct bfa_itnim_s *itnim,
 116                                           enum bfa_itnim_event event);
 117 static void     bfa_itnim_sm_offline(struct bfa_itnim_s *itnim,
 118                                          enum bfa_itnim_event event);
 119 static void     bfa_itnim_sm_iocdisable(struct bfa_itnim_s *itnim,
 120                                             enum bfa_itnim_event event);
 121 static void     bfa_itnim_sm_deleting(struct bfa_itnim_s *itnim,
 122                                           enum bfa_itnim_event event);
 123 static void     bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s *itnim,
 124                                           enum bfa_itnim_event event);
 125 static void     bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s *itnim,
 126                                           enum bfa_itnim_event event);
 127 static void     bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s *itnim,
 128                                           enum bfa_itnim_event event);
 129
 130 /**
 131  *              Beginning/unallocated state - no events expected.
 132  */
 133 static void
 134 bfa_itnim_sm_uninit(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
 135 {
 136         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 137         bfa_trc(itnim->bfa, event);
 138
 139         switch (event) {
 140         case BFA_ITNIM_SM_CREATE:
 141                 bfa_sm_set_state(itnim, bfa_itnim_sm_created);
 142                 itnim->is_online = BFA_FALSE;
 143                 bfa_fcpim_additn(itnim);
 144                 break;
 145
 146         default:
 147                 bfa_sm_fault(itnim->bfa, event);
 148         }
 149 }
 150
 151 /**
 152  *              Beginning state, only online event expected.
 153  */
 154 static void
 155 bfa_itnim_sm_created(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
 156 {
 157         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 158         bfa_trc(itnim->bfa, event);
 159
 160         switch (event) {
 161         case BFA_ITNIM_SM_ONLINE:
 162                 if (bfa_itnim_send_fwcreate(itnim))
 163                         bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
 164                 else
 165                         bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull);
 166                 break;
 167
 168         case BFA_ITNIM_SM_DELETE:
 169                 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
 170                 bfa_fcpim_delitn(itnim);
 171                 break;
 172
 173         case BFA_ITNIM_SM_HWFAIL:
 174                 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
 175                 break;
 176
 177         default:
 178                 bfa_sm_fault(itnim->bfa, event);
 179         }
 180 }
 181
 182 /**
 183  *              Waiting for itnim create response from firmware.
 184  */
 185 static void
 186 bfa_itnim_sm_fwcreate(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
 187 {
 188         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 189         bfa_trc(itnim->bfa, event);
 190
 191         switch (event) {
 192         case BFA_ITNIM_SM_FWRSP:
 193                 bfa_sm_set_state(itnim, bfa_itnim_sm_online);
 194                 itnim->is_online = BFA_TRUE;
 195                 bfa_itnim_iotov_online(itnim);
 196                 bfa_itnim_online_cb(itnim);
 197                 break;
 198
 199         case BFA_ITNIM_SM_DELETE:
 200                 bfa_sm_set_state(itnim, bfa_itnim_sm_delete_pending);
 201                 break;
 202
 203         case BFA_ITNIM_SM_OFFLINE:
 204                 if (bfa_itnim_send_fwdelete(itnim))
 205                         bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete);
 206                 else
 207                         bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete_qfull);
 208                 break;
 209
 210         case BFA_ITNIM_SM_HWFAIL:
 211                 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
 212                 break;
 213
 214         default:
 215                 bfa_sm_fault(itnim->bfa, event);
 216         }
 217 }
 218
 219 static void
 220 bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s *itnim,
 221                         enum bfa_itnim_event event)
 222 {
 223         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 224         bfa_trc(itnim->bfa, event);
 225
 226         switch (event) {
 227         case BFA_ITNIM_SM_QRESUME:
 228                 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
 229                 bfa_itnim_send_fwcreate(itnim);
 230                 break;
 231
 232         case BFA_ITNIM_SM_DELETE:
 233                 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
 234                 bfa_reqq_wcancel(&itnim->reqq_wait);
 235                 bfa_fcpim_delitn(itnim);
 236                 break;
 237
 238         case BFA_ITNIM_SM_OFFLINE:
 239                 bfa_sm_set_state(itnim, bfa_itnim_sm_offline);
 240                 bfa_reqq_wcancel(&itnim->reqq_wait);
 241                 bfa_itnim_offline_cb(itnim);
 242                 break;
 243
 244         case BFA_ITNIM_SM_HWFAIL:
 245                 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
 246                 bfa_reqq_wcancel(&itnim->reqq_wait);
 247                 break;
 248
 249         default:
 250                 bfa_sm_fault(itnim->bfa, event);
 251         }
 252 }
 253
 254 /**
 255  *      Waiting for itnim create response from firmware, a delete is pending.
 256  */
 257 static void
 258 bfa_itnim_sm_delete_pending(struct bfa_itnim_s *itnim,
 259                                 enum bfa_itnim_event event)
 260 {
 261         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 262         bfa_trc(itnim->bfa, event);
 263
 264         switch (event) {
 265         case BFA_ITNIM_SM_FWRSP:
 266                 if (bfa_itnim_send_fwdelete(itnim))
 267                         bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
 268                 else
 269                         bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull);
 270                 break;
 271
 272         case BFA_ITNIM_SM_HWFAIL:
 273                 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
 274                 bfa_fcpim_delitn(itnim);
 275                 break;
 276
 277         default:
 278                 bfa_sm_fault(itnim->bfa, event);
 279         }
 280 }
 281
 282 /**
 283  *              Online state - normal parking state.
 284  */
 285 static void
 286 bfa_itnim_sm_online(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
 287 {
 288         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 289         bfa_trc(itnim->bfa, event);
 290
 291         switch (event) {
 292         case BFA_ITNIM_SM_OFFLINE:
 293                 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_offline);
 294                 itnim->is_online = BFA_FALSE;
 295                 bfa_itnim_iotov_start(itnim);
 296                 bfa_itnim_cleanup(itnim);
 297                 break;
 298
 299         case BFA_ITNIM_SM_DELETE:
 300                 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete);
 301                 itnim->is_online = BFA_FALSE;
 302                 bfa_itnim_cleanup(itnim);
 303                 break;
 304
 305         case BFA_ITNIM_SM_SLER:
 306                 bfa_sm_set_state(itnim, bfa_itnim_sm_sler);
 307                 itnim->is_online = BFA_FALSE;
 308                 bfa_itnim_iotov_start(itnim);
 309                 bfa_itnim_sler_cb(itnim);
 310                 break;
 311
 312         case BFA_ITNIM_SM_HWFAIL:
 313                 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
 314                 itnim->is_online = BFA_FALSE;
 315                 bfa_itnim_iotov_start(itnim);
 316                 bfa_itnim_iocdisable_cleanup(itnim);
 317                 break;
 318
 319         default:
 320                 bfa_sm_fault(itnim->bfa, event);
 321         }
 322 }
 323
 324 /**
 325  *              Second level error recovery need.
 326  */
 327 static void
 328 bfa_itnim_sm_sler(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
 329 {
 330         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 331         bfa_trc(itnim->bfa, event);
 332
 333         switch (event) {
 334         case BFA_ITNIM_SM_OFFLINE:
 335                 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_offline);
 336                 bfa_itnim_cleanup(itnim);
 337                 break;
 338
 339         case BFA_ITNIM_SM_DELETE:
 340                 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete);
 341                 bfa_itnim_cleanup(itnim);
 342                 bfa_itnim_iotov_delete(itnim);
 343                 break;
 344
 345         case BFA_ITNIM_SM_HWFAIL:
 346                 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
 347                 bfa_itnim_iocdisable_cleanup(itnim);
 348                 break;
 349
 350         default:
 351                 bfa_sm_fault(itnim->bfa, event);
 352         }
 353 }
 354
 355 /**
 356  *              Going offline. Waiting for active IO cleanup.
 357  */
 358 static void
 359 bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s *itnim,
 360                                  enum bfa_itnim_event event)
 361 {
 362         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 363         bfa_trc(itnim->bfa, event);
 364
 365         switch (event) {
 366         case BFA_ITNIM_SM_CLEANUP:
 367                 if (bfa_itnim_send_fwdelete(itnim))
 368                         bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete);
 369                 else
 370                         bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete_qfull);
 371                 break;
 372
 373         case BFA_ITNIM_SM_DELETE:
 374                 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete);
 375                 bfa_itnim_iotov_delete(itnim);
 376                 break;
 377
 378         case BFA_ITNIM_SM_HWFAIL:
 379                 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
 380                 bfa_itnim_iocdisable_cleanup(itnim);
 381                 bfa_itnim_offline_cb(itnim);
 382                 break;
 383
 384         case BFA_ITNIM_SM_SLER:
 385                 break;
 386
 387         default:
 388                 bfa_sm_fault(itnim->bfa, event);
 389         }
 390 }
 391
 392 /**
 393  *              Deleting itnim. Waiting for active IO cleanup.
 394  */
 395 static void
 396 bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s *itnim,
 397                                 enum bfa_itnim_event event)
 398 {
 399         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 400         bfa_trc(itnim->bfa, event);
 401
 402         switch (event) {
 403         case BFA_ITNIM_SM_CLEANUP:
 404                 if (bfa_itnim_send_fwdelete(itnim))
 405                         bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
 406                 else
 407                         bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull);
 408                 break;
 409
 410         case BFA_ITNIM_SM_HWFAIL:
 411                 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
 412                 bfa_itnim_iocdisable_cleanup(itnim);
 413                 break;
 414
 415         default:
 416                 bfa_sm_fault(itnim->bfa, event);
 417         }
 418 }
 419
 420 /**
 421  * Rport offline. Fimrware itnim is being deleted - awaiting f/w response.
 422  */
 423 static void
 424 bfa_itnim_sm_fwdelete(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
 425 {
 426         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 427         bfa_trc(itnim->bfa, event);
 428
 429         switch (event) {
 430         case BFA_ITNIM_SM_FWRSP:
 431                 bfa_sm_set_state(itnim, bfa_itnim_sm_offline);
 432                 bfa_itnim_offline_cb(itnim);
 433                 break;
 434
 435         case BFA_ITNIM_SM_DELETE:
 436                 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
 437                 break;
 438
 439         case BFA_ITNIM_SM_HWFAIL:
 440                 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
 441                 bfa_itnim_offline_cb(itnim);
 442                 break;
 443
 444         default:
 445                 bfa_sm_fault(itnim->bfa, event);
 446         }
 447 }
 448
 449 static void
 450 bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s *itnim,
 451                         enum bfa_itnim_event event)
 452 {
 453         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 454         bfa_trc(itnim->bfa, event);
 455
 456         switch (event) {
 457         case BFA_ITNIM_SM_QRESUME:
 458                 bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete);
 459                 bfa_itnim_send_fwdelete(itnim);
 460                 break;
 461
 462         case BFA_ITNIM_SM_DELETE:
 463                 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull);
 464                 break;
 465
 466         case BFA_ITNIM_SM_HWFAIL:
 467                 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
 468                 bfa_reqq_wcancel(&itnim->reqq_wait);
 469                 bfa_itnim_offline_cb(itnim);
 470                 break;
 471
 472         default:
 473                 bfa_sm_fault(itnim->bfa, event);
 474         }
 475 }
 476
 477 /**
 478  *              Offline state.
 479  */
 480 static void
 481 bfa_itnim_sm_offline(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
 482 {
 483         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 484         bfa_trc(itnim->bfa, event);
 485
 486         switch (event) {
 487         case BFA_ITNIM_SM_DELETE:
 488                 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
 489                 bfa_itnim_iotov_delete(itnim);
 490                 bfa_fcpim_delitn(itnim);
 491                 break;
 492
 493         case BFA_ITNIM_SM_ONLINE:
 494                 if (bfa_itnim_send_fwcreate(itnim))
 495                         bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
 496                 else
 497                         bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull);
 498                 break;
 499
 500         case BFA_ITNIM_SM_HWFAIL:
 501                 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
 502                 break;
 503
 504         default:
 505                 bfa_sm_fault(itnim->bfa, event);
 506         }
 507 }
 508
 509 /**
 510  *              IOC h/w failed state.
 511  */
 512 static void
 513 bfa_itnim_sm_iocdisable(struct bfa_itnim_s *itnim,
 514                             enum bfa_itnim_event event)
 515 {
 516         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 517         bfa_trc(itnim->bfa, event);
 518
 519         switch (event) {
 520         case BFA_ITNIM_SM_DELETE:
 521                 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
 522                 bfa_itnim_iotov_delete(itnim);
 523                 bfa_fcpim_delitn(itnim);
 524                 break;
 525
 526         case BFA_ITNIM_SM_OFFLINE:
 527                 bfa_itnim_offline_cb(itnim);
 528                 break;
 529
 530         case BFA_ITNIM_SM_ONLINE:
 531                 if (bfa_itnim_send_fwcreate(itnim))
 532                         bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
 533                 else
 534                         bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull);
 535                 break;
 536
 537         case BFA_ITNIM_SM_HWFAIL:
 538                 break;
 539
 540         default:
 541                 bfa_sm_fault(itnim->bfa, event);
 542         }
 543 }
 544
 545 /**
 546  *              Itnim is deleted, waiting for firmware response to delete.
 547  */
 548 static void
 549 bfa_itnim_sm_deleting(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
 550 {
 551         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 552         bfa_trc(itnim->bfa, event);
 553
 554         switch (event) {
 555         case BFA_ITNIM_SM_FWRSP:
 556         case BFA_ITNIM_SM_HWFAIL:
 557                 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
 558                 bfa_fcpim_delitn(itnim);
 559                 break;
 560
 561         default:
 562                 bfa_sm_fault(itnim->bfa, event);
 563         }
 564 }
 565
 566 static void
 567 bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s *itnim,
 568                         enum bfa_itnim_event event)
 569 {
 570         bfa_trc(itnim->bfa, itnim->rport->rport_tag);
 571         bfa_trc(itnim->bfa, event);
 572
 573         switch (event) {
 574         case BFA_ITNIM_SM_QRESUME:
 575                 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
 576                 bfa_itnim_send_fwdelete(itnim);
 577                 break;
 578
 579         case BFA_ITNIM_SM_HWFAIL:
 580                 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
 581                 bfa_reqq_wcancel(&itnim->reqq_wait);
 582                 bfa_fcpim_delitn(itnim);
 583                 break;
 584
 585         default:
 586                 bfa_sm_fault(itnim->bfa, event);
 587         }
 588 }
 589
 590
 591
 592 /**
 593  *  bfa_itnim_private
 594  */
 595
 596 /**
 597  *              Initiate cleanup of all IOs on an IOC failure.
 598  */
 599 static void
 600 bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s *itnim)
 601 {
 602         struct bfa_tskim_s *tskim;
 603         struct bfa_ioim_s *ioim;
 604         struct list_head        *qe, *qen;
 605
 606         list_for_each_safe(qe, qen, &itnim->tsk_q) {
 607                 tskim = (struct bfa_tskim_s *) qe;
 608                 bfa_tskim_iocdisable(tskim);
 609         }
 610
 611         list_for_each_safe(qe, qen, &itnim->io_q) {
 612                 ioim = (struct bfa_ioim_s *) qe;
 613                 bfa_ioim_iocdisable(ioim);
 614         }
 615
 616         /**
 617          * For IO request in pending queue, we pretend an early timeout.
 618          */
 619         list_for_each_safe(qe, qen, &itnim->pending_q) {
 620                 ioim = (struct bfa_ioim_s *) qe;
 621                 bfa_ioim_tov(ioim);
 622         }
 623
 624         list_for_each_safe(qe, qen, &itnim->io_cleanup_q) {
 625                 ioim = (struct bfa_ioim_s *) qe;
 626                 bfa_ioim_iocdisable(ioim);
 627         }
 628 }
 629
 630 /**
 631  *              IO cleanup completion
 632  */
 633 static void
 634 bfa_itnim_cleanp_comp(void *itnim_cbarg)
 635 {
 636         struct bfa_itnim_s *itnim = itnim_cbarg;
 637
 638         bfa_stats(itnim, cleanup_comps);
 639         bfa_sm_send_event(itnim, BFA_ITNIM_SM_CLEANUP);
 640 }
 641
 642 /**
 643  *              Initiate cleanup of all IOs.
 644  */
 645 static void
 646 bfa_itnim_cleanup(struct bfa_itnim_s *itnim)
 647 {
 648         struct bfa_ioim_s  *ioim;
 649         struct bfa_tskim_s *tskim;
 650         struct list_head         *qe, *qen;
 651
 652         bfa_wc_init(&itnim->wc, bfa_itnim_cleanp_comp, itnim);
 653
 654         list_for_each_safe(qe, qen, &itnim->io_q) {
 655                 ioim = (struct bfa_ioim_s *) qe;
 656
 657                 /**
 658                  * Move IO to a cleanup queue from active queue so that a later
 659                  * TM will not pickup this IO.
 660                  */
 661                 list_del(&ioim->qe);
 662                 list_add_tail(&ioim->qe, &itnim->io_cleanup_q);
 663
 664                 bfa_wc_up(&itnim->wc);
 665                 bfa_ioim_cleanup(ioim);
 666         }
 667
 668         list_for_each_safe(qe, qen, &itnim->tsk_q) {
 669                 tskim = (struct bfa_tskim_s *) qe;
 670                 bfa_wc_up(&itnim->wc);
 671                 bfa_tskim_cleanup(tskim);
 672         }
 673
 674         bfa_wc_wait(&itnim->wc);
 675 }
 676
 677 static void
 678 __bfa_cb_itnim_online(void *cbarg, bfa_boolean_t complete)
 679 {
 680         struct bfa_itnim_s *itnim = cbarg;
 681
 682         if (complete)
 683                 bfa_cb_itnim_online(itnim->ditn);
 684 }
 685
 686 static void
 687 __bfa_cb_itnim_offline(void *cbarg, bfa_boolean_t complete)
 688 {
 689         struct bfa_itnim_s *itnim = cbarg;
 690
 691         if (complete)
 692                 bfa_cb_itnim_offline(itnim->ditn);
 693 }
 694
 695 static void
 696 __bfa_cb_itnim_sler(void *cbarg, bfa_boolean_t complete)
 697 {
 698         struct bfa_itnim_s *itnim = cbarg;
 699
 700         if (complete)
 701                 bfa_cb_itnim_sler(itnim->ditn);
 702 }
 703
 704 /**
 705  * Call to resume any I/O requests waiting for room in request queue.
 706  */
 707 static void
 708 bfa_itnim_qresume(void *cbarg)
 709 {
 710         struct bfa_itnim_s *itnim = cbarg;
 711
 712         bfa_sm_send_event(itnim, BFA_ITNIM_SM_QRESUME);
 713 }
 714
 715
 716
 717
 718 /**
 719  *  bfa_itnim_public
 720  */
 721
 722 void
 723 bfa_itnim_iodone(struct bfa_itnim_s *itnim)
 724 {
 725         bfa_wc_down(&itnim->wc);
 726 }
 727
 728 void
 729 bfa_itnim_tskdone(struct bfa_itnim_s *itnim)
 730 {
 731         bfa_wc_down(&itnim->wc);
 732 }
 733
 734 void
 735 bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
 736                 u32 *dm_len)
 737 {
 738         /**
 739          * ITN memory
 740          */
 741         *km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itnim_s);
 742 }
 743
 744 void
 745 bfa_itnim_attach(struct bfa_fcpim_mod_s *fcpim, struct bfa_meminfo_s *minfo)
 746 {
 747         struct bfa_s      *bfa = fcpim->bfa;
 748         struct bfa_itnim_s *itnim;
 749         int             i;
 750
 751         INIT_LIST_HEAD(&fcpim->itnim_q);
 752
 753         itnim = (struct bfa_itnim_s *) bfa_meminfo_kva(minfo);
 754         fcpim->itnim_arr = itnim;
 755
 756         for (i = 0; i < fcpim->num_itnims; i++, itnim++) {
 757                 bfa_os_memset(itnim, 0, sizeof(struct bfa_itnim_s));
 758                 itnim->bfa = bfa;
 759                 itnim->fcpim = fcpim;
 760                 itnim->reqq = BFA_REQQ_QOS_LO;
 761                 itnim->rport = BFA_RPORT_FROM_TAG(bfa, i);
 762                 itnim->iotov_active = BFA_FALSE;
 763                 bfa_reqq_winit(&itnim->reqq_wait, bfa_itnim_qresume, itnim);
 764
 765                 INIT_LIST_HEAD(&itnim->io_q);
 766                 INIT_LIST_HEAD(&itnim->io_cleanup_q);
 767                 INIT_LIST_HEAD(&itnim->pending_q);
 768                 INIT_LIST_HEAD(&itnim->tsk_q);
 769                 INIT_LIST_HEAD(&itnim->delay_comp_q);
 770                 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
 771         }
 772
 773         bfa_meminfo_kva(minfo) = (u8 *) itnim;
 774 }
 775
 776 void
 777 bfa_itnim_iocdisable(struct bfa_itnim_s *itnim)
 778 {
 779         bfa_stats(itnim, ioc_disabled);
 780         bfa_sm_send_event(itnim, BFA_ITNIM_SM_HWFAIL);
 781 }
 782
 783 static bfa_boolean_t
 784 bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim)
 785 {
 786         struct bfi_itnim_create_req_s *m;
 787
 788         itnim->msg_no++;
 789
 790         /**
 791          * check for room in queue to send request now
 792          */
 793         m = bfa_reqq_next(itnim->bfa, itnim->reqq);
 794         if (!m) {
 795                 bfa_reqq_wait(itnim->bfa, itnim->reqq, &itnim->reqq_wait);
 796                 return BFA_FALSE;
 797         }
 798
 799         bfi_h2i_set(m->mh, BFI_MC_ITNIM, BFI_ITNIM_H2I_CREATE_REQ,
 800                         bfa_lpuid(itnim->bfa));
 801         m->fw_handle = itnim->rport->fw_handle;
 802         m->class = FC_CLASS_3;
 803         m->seq_rec = itnim->seq_rec;
 804         m->msg_no = itnim->msg_no;
 805
 806         /**
 807          * queue I/O message to firmware
 808          */
 809         bfa_reqq_produce(itnim->bfa, itnim->reqq);
 810         return BFA_TRUE;
 811 }
 812
 813 static bfa_boolean_t
 814 bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim)
 815 {
 816         struct bfi_itnim_delete_req_s *m;
 817
 818         /**
 819          * check for room in queue to send request now
 820          */
 821         m = bfa_reqq_next(itnim->bfa, itnim->reqq);
 822         if (!m) {
 823                 bfa_reqq_wait(itnim->bfa, itnim->reqq, &itnim->reqq_wait);
 824                 return BFA_FALSE;
 825         }
 826
 827         bfi_h2i_set(m->mh, BFI_MC_ITNIM, BFI_ITNIM_H2I_DELETE_REQ,
 828                         bfa_lpuid(itnim->bfa));
 829         m->fw_handle = itnim->rport->fw_handle;
 830
 831         /**
 832          * queue I/O message to firmware
 833          */
 834         bfa_reqq_produce(itnim->bfa, itnim->reqq);
 835         return BFA_TRUE;
 836 }
 837
 838 /**
 839  * Cleanup all pending failed inflight requests.
 840  */
 841 static void
 842 bfa_itnim_delayed_comp(struct bfa_itnim_s *itnim, bfa_boolean_t iotov)
 843 {
 844         struct bfa_ioim_s *ioim;
 845         struct list_head *qe, *qen;
 846
 847         list_for_each_safe(qe, qen, &itnim->delay_comp_q) {
 848                 ioim = (struct bfa_ioim_s *)qe;
 849                 bfa_ioim_delayed_comp(ioim, iotov);
 850         }
 851 }
 852
 853 /**
 854  * Start all pending IO requests.
 855  */
 856 static void
 857 bfa_itnim_iotov_online(struct bfa_itnim_s *itnim)
 858 {
 859         struct bfa_ioim_s *ioim;
 860
 861         bfa_itnim_iotov_stop(itnim);
 862
 863         /**
 864          * Abort all inflight IO requests in the queue
 865          */
 866         bfa_itnim_delayed_comp(itnim, BFA_FALSE);
 867
 868         /**
 869          * Start all pending IO requests.
 870          */
 871         while (!list_empty(&itnim->pending_q)) {
 872                 bfa_q_deq(&itnim->pending_q, &ioim);
 873                 list_add_tail(&ioim->qe, &itnim->io_q);
 874                 bfa_ioim_start(ioim);
 875         }
 876 }
 877
 878 /**
 879  * Fail all pending IO requests
 880  */
 881 static void
 882 bfa_itnim_iotov_cleanup(struct bfa_itnim_s *itnim)
 883 {
 884         struct bfa_ioim_s *ioim;
 885
 886         /**
 887          * Fail all inflight IO requests in the queue
 888          */
 889         bfa_itnim_delayed_comp(itnim, BFA_TRUE);
 890
 891         /**
 892          * Fail any pending IO requests.
 893          */
 894         while (!list_empty(&itnim->pending_q)) {
 895                 bfa_q_deq(&itnim->pending_q, &ioim);
 896                 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
 897                 bfa_ioim_tov(ioim);
 898         }
 899 }
 900
 901 /**
 902  * IO TOV timer callback. Fail any pending IO requests.
 903  */
 904 static void
 905 bfa_itnim_iotov(void *itnim_arg)
 906 {
 907         struct bfa_itnim_s *itnim = itnim_arg;
 908
 909         itnim->iotov_active = BFA_FALSE;
 910
 911         bfa_cb_itnim_tov_begin(itnim->ditn);
 912         bfa_itnim_iotov_cleanup(itnim);
 913         bfa_cb_itnim_tov(itnim->ditn);
 914 }
 915
 916 /**
 917  * Start IO TOV timer for failing back pending IO requests in offline state.
 918  */
 919 static void
 920 bfa_itnim_iotov_start(struct bfa_itnim_s *itnim)
 921 {
 922         if (itnim->fcpim->path_tov > 0) {
 923
 924                 itnim->iotov_active = BFA_TRUE;
 925                 bfa_assert(bfa_itnim_hold_io(itnim));
 926                 bfa_timer_start(itnim->bfa, &itnim->timer,
 927                         bfa_itnim_iotov, itnim, itnim->fcpim->path_tov);
 928         }
 929 }
 930
 931 /**
 932  * Stop IO TOV timer.
 933  */
 934 static void
 935 bfa_itnim_iotov_stop(struct bfa_itnim_s *itnim)
 936 {
 937         if (itnim->iotov_active) {
 938                 itnim->iotov_active = BFA_FALSE;
 939                 bfa_timer_stop(&itnim->timer);
 940         }
 941 }
 942
 943 /**
 944  * Stop IO TOV timer.
 945  */
 946 static void
 947 bfa_itnim_iotov_delete(struct bfa_itnim_s *itnim)
 948 {
 949     bfa_boolean_t pathtov_active = BFA_FALSE;
 950
 951     if (itnim->iotov_active)
 952                 pathtov_active = BFA_TRUE;
 953
 954         bfa_itnim_iotov_stop(itnim);
 955         if (pathtov_active)
 956                 bfa_cb_itnim_tov_begin(itnim->ditn);
 957         bfa_itnim_iotov_cleanup(itnim);
 958         if (pathtov_active)
 959                 bfa_cb_itnim_tov(itnim->ditn);
 960 }
 961
 962
 963
 964 /**
 965  *  bfa_itnim_public
 966  */
 967
 968 /**
 969  *              Itnim interrupt processing.
 970  */
 971 void
 972 bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 973 {
 974         struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
 975         union bfi_itnim_i2h_msg_u msg;
 976         struct bfa_itnim_s *itnim;
 977
 978         bfa_trc(bfa, m->mhdr.msg_id);
 979
 980         msg.msg = m;
 981
 982         switch (m->mhdr.msg_id) {
 983         case BFI_ITNIM_I2H_CREATE_RSP:
 984                 itnim = BFA_ITNIM_FROM_TAG(fcpim,
 985                                                msg.create_rsp->bfa_handle);
 986                 bfa_assert(msg.create_rsp->status == BFA_STATUS_OK);
 987                 bfa_stats(itnim, create_comps);
 988                 bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP);
 989                 break;
 990
 991         case BFI_ITNIM_I2H_DELETE_RSP:
 992                 itnim = BFA_ITNIM_FROM_TAG(fcpim,
 993                                                msg.delete_rsp->bfa_handle);
 994                 bfa_assert(msg.delete_rsp->status == BFA_STATUS_OK);
 995                 bfa_stats(itnim, delete_comps);
 996                 bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP);
 997                 break;
 998
 999         case BFI_ITNIM_I2H_SLER_EVENT:
1000                 itnim = BFA_ITNIM_FROM_TAG(fcpim,
1001                                                msg.sler_event->bfa_handle);
1002                 bfa_stats(itnim, sler_events);
1003                 bfa_sm_send_event(itnim, BFA_ITNIM_SM_SLER);
1004                 break;
1005
1006         default:
1007                 bfa_trc(bfa, m->mhdr.msg_id);
1008                 bfa_assert(0);
1009         }
1010 }
1011
1012
1013
1014 /**
1015  *  bfa_itnim_api
1016  */
1017
1018 struct bfa_itnim_s *
1019 bfa_itnim_create(struct bfa_s *bfa, struct bfa_rport_s *rport, void *ditn)
1020 {
1021         struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
1022         struct bfa_itnim_s *itnim;
1023
1024         itnim = BFA_ITNIM_FROM_TAG(fcpim, rport->rport_tag);
1025         bfa_assert(itnim->rport == rport);
1026
1027         itnim->ditn = ditn;
1028
1029         bfa_stats(itnim, creates);
1030         bfa_sm_send_event(itnim, BFA_ITNIM_SM_CREATE);
1031
1032         return itnim;
1033 }
1034
1035 void
1036 bfa_itnim_delete(struct bfa_itnim_s *itnim)
1037 {
1038         bfa_stats(itnim, deletes);
1039         bfa_sm_send_event(itnim, BFA_ITNIM_SM_DELETE);
1040 }
1041
1042 void
1043 bfa_itnim_online(struct bfa_itnim_s *itnim, bfa_boolean_t seq_rec)
1044 {
1045         itnim->seq_rec = seq_rec;
1046         bfa_stats(itnim, onlines);
1047         bfa_sm_send_event(itnim, BFA_ITNIM_SM_ONLINE);
1048 }
1049
1050 void
1051 bfa_itnim_offline(struct bfa_itnim_s *itnim)
1052 {
1053         bfa_stats(itnim, offlines);
1054         bfa_sm_send_event(itnim, BFA_ITNIM_SM_OFFLINE);
1055 }
1056
1057 /**
1058  * Return true if itnim is considered offline for holding off IO request.
1059  * IO is not held if itnim is being deleted.
1060  */
1061 bfa_boolean_t
1062 bfa_itnim_hold_io(struct bfa_itnim_s *itnim)
1063 {
1064         return
1065                 itnim->fcpim->path_tov && itnim->iotov_active &&
1066                 (bfa_sm_cmp_state(itnim, bfa_itnim_sm_fwcreate) ||
1067                  bfa_sm_cmp_state(itnim, bfa_itnim_sm_sler) ||
1068                  bfa_sm_cmp_state(itnim, bfa_itnim_sm_cleanup_offline) ||
1069                  bfa_sm_cmp_state(itnim, bfa_itnim_sm_fwdelete) ||
1070                  bfa_sm_cmp_state(itnim, bfa_itnim_sm_offline) ||
1071                  bfa_sm_cmp_state(itnim, bfa_itnim_sm_iocdisable))
1072         ;
1073 }
1074
1075 void
1076 bfa_itnim_get_stats(struct bfa_itnim_s *itnim,
1077         struct bfa_itnim_hal_stats_s *stats)
1078 {
1079         *stats = itnim->stats;
1080 }
1081
1082 void
1083 bfa_itnim_clear_stats(struct bfa_itnim_s *itnim)
1084 {
1085         bfa_os_memset(&itnim->stats, 0, sizeof(itnim->stats));
1086 }
1087
1088