drivers/net/qede/base/ecore_spq.c

   1 /*
   2  * Copyright (c) 2016 QLogic Corporation.
   3  * All rights reserved.
   4  * www.qlogic.com
   5  *
   6  * See LICENSE.qede_pmd for copyright and licensing details.
   7  */
   8
   9 #include "bcm_osal.h"
  10 #include "reg_addr.h"
  11 #include "ecore_gtt_reg_addr.h"
  12 #include "ecore_hsi_common.h"
  13 #include "ecore.h"
  14 #include "ecore_sp_api.h"
  15 #include "ecore_spq.h"
  16 #include "ecore_iro.h"
  17 #include "ecore_init_fw_funcs.h"
  18 #include "ecore_cxt.h"
  19 #include "ecore_int.h"
  20 #include "ecore_dev_api.h"
  21 #include "ecore_mcp.h"
  22 #include "ecore_hw.h"
  23 #include "ecore_sriov.h"
  24
  25 /***************************************************************************
  26  * Structures & Definitions
  27  ***************************************************************************/
  28
  29 #define SPQ_HIGH_PRI_RESERVE_DEFAULT    (1)
  30
  31 #define SPQ_BLOCK_DELAY_MAX_ITER        (10)
  32 #define SPQ_BLOCK_DELAY_US              (10)
  33 #define SPQ_BLOCK_SLEEP_MAX_ITER        (200)
  34 #define SPQ_BLOCK_SLEEP_MS              (5)
  35
  36 /***************************************************************************
  37  * Blocking Imp. (BLOCK/EBLOCK mode)
  38  ***************************************************************************/
  39 static void ecore_spq_blocking_cb(struct ecore_hwfn *p_hwfn, void *cookie,
  40                                   union event_ring_data OSAL_UNUSED * data,
  41                                   u8 fw_return_code)
  42 {
  43         struct ecore_spq_comp_done *comp_done;
  44
  45         comp_done = (struct ecore_spq_comp_done *)cookie;
  46
  47         comp_done->done = 0x1;
  48         comp_done->fw_return_code = fw_return_code;
  49
  50         /* make update visible to waiting thread */
  51         OSAL_SMP_WMB(p_hwfn->p_dev);
  52 }
  53
  54 static enum _ecore_status_t __ecore_spq_block(struct ecore_hwfn *p_hwfn,
  55                                               struct ecore_spq_entry *p_ent,
  56                                               u8 *p_fw_ret,
  57                                               bool sleep_between_iter)
  58 {
  59         struct ecore_spq_comp_done *comp_done;
  60         u32 iter_cnt;
  61
  62         comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
  63         iter_cnt = sleep_between_iter ? p_hwfn->p_spq->block_sleep_max_iter
  64                                       : SPQ_BLOCK_DELAY_MAX_ITER;
  65 #ifndef ASIC_ONLY
  66         if (CHIP_REV_IS_EMUL(p_hwfn->p_dev) && sleep_between_iter)
  67                 iter_cnt *= 5;
  68 #endif
  69
  70         while (iter_cnt--) {
  71                 OSAL_POLL_MODE_DPC(p_hwfn);
  72                 OSAL_SMP_RMB(p_hwfn->p_dev);
  73                 if (comp_done->done == 1) {
  74                         if (p_fw_ret)
  75                                 *p_fw_ret = comp_done->fw_return_code;
  76                         return ECORE_SUCCESS;
  77                 }
  78
  79                 if (sleep_between_iter)
  80                         OSAL_MSLEEP(SPQ_BLOCK_SLEEP_MS);
  81                 else
  82                         OSAL_UDELAY(SPQ_BLOCK_DELAY_US);
  83         }
  84
  85         return ECORE_TIMEOUT;
  86 }
  87
  88 static enum _ecore_status_t ecore_spq_block(struct ecore_hwfn *p_hwfn,
  89                                             struct ecore_spq_entry *p_ent,
  90                                             u8 *p_fw_ret, bool skip_quick_poll)
  91 {
  92         struct ecore_spq_comp_done *comp_done;
  93         struct ecore_ptt *p_ptt;
  94         enum _ecore_status_t rc;
  95
  96         /* A relatively short polling period w/o sleeping, to allow the FW to
  97          * complete the ramrod and thus possibly to avoid the following sleeps.
  98          */
  99         if (!skip_quick_poll) {
 100                 rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, false);
 101                 if (rc == ECORE_SUCCESS)
 102                         return ECORE_SUCCESS;
 103         }
 104
 105         /* Move to polling with a sleeping period between iterations */
 106         rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
 107         if (rc == ECORE_SUCCESS)
 108                 return ECORE_SUCCESS;
 109
 110         p_ptt = ecore_ptt_acquire(p_hwfn);
 111         if (!p_ptt)
 112                 return ECORE_AGAIN;
 113
 114         DP_INFO(p_hwfn, "Ramrod is stuck, requesting MCP drain\n");
 115         rc = ecore_mcp_drain(p_hwfn, p_ptt);
 116         ecore_ptt_release(p_hwfn, p_ptt);
 117         if (rc != ECORE_SUCCESS) {
 118                 DP_NOTICE(p_hwfn, true, "MCP drain failed\n");
 119                 goto err;
 120         }
 121
 122         /* Retry after drain */
 123         rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
 124         if (rc == ECORE_SUCCESS)
 125                 return ECORE_SUCCESS;
 126
 127         comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
 128         if (comp_done->done == 1) {
 129                 if (p_fw_ret)
 130                         *p_fw_ret = comp_done->fw_return_code;
 131                 return ECORE_SUCCESS;
 132         }
 133 err:
 134         DP_NOTICE(p_hwfn, true,
 135                   "Ramrod is stuck [CID %08x cmd %02x proto %02x echo %04x]\n",
 136                   OSAL_LE32_TO_CPU(p_ent->elem.hdr.cid),
 137                   p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id,
 138                   OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
 139
 140         ecore_hw_err_notify(p_hwfn, ECORE_HW_ERR_RAMROD_FAIL);
 141
 142         return ECORE_BUSY;
 143 }
 144
 145 void ecore_set_spq_block_timeout(struct ecore_hwfn *p_hwfn,
 146                                  u32 spq_timeout_ms)
 147 {
 148         p_hwfn->p_spq->block_sleep_max_iter = spq_timeout_ms ?
 149                 spq_timeout_ms / SPQ_BLOCK_SLEEP_MS :
 150                 SPQ_BLOCK_SLEEP_MAX_ITER;
 151 }
 152
 153 /***************************************************************************
 154  * SPQ entries inner API
 155  ***************************************************************************/
 156 static enum _ecore_status_t
 157 ecore_spq_fill_entry(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry *p_ent)
 158 {
 159         p_ent->flags = 0;
 160
 161         switch (p_ent->comp_mode) {
 162         case ECORE_SPQ_MODE_EBLOCK:
 163         case ECORE_SPQ_MODE_BLOCK:
 164                 p_ent->comp_cb.function = ecore_spq_blocking_cb;
 165                 break;
 166         case ECORE_SPQ_MODE_CB:
 167                 break;
 168         default:
 169                 DP_NOTICE(p_hwfn, true, "Unknown SPQE completion mode %d\n",
 170                           p_ent->comp_mode);
 171                 return ECORE_INVAL;
 172         }
 173
 174         DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
 175                    "Ramrod header: [CID 0x%08x CMD 0x%02x protocol 0x%02x]"
 176                    " Data pointer: [%08x:%08x] Completion Mode: %s\n",
 177                    p_ent->elem.hdr.cid, p_ent->elem.hdr.cmd_id,
 178                    p_ent->elem.hdr.protocol_id,
 179                    p_ent->elem.data_ptr.hi, p_ent->elem.data_ptr.lo,
 180                    D_TRINE(p_ent->comp_mode, ECORE_SPQ_MODE_EBLOCK,
 181                            ECORE_SPQ_MODE_BLOCK, "MODE_EBLOCK", "MODE_BLOCK",
 182                            "MODE_CB"));
 183
 184         return ECORE_SUCCESS;
 185 }
 186
 187 /***************************************************************************
 188  * HSI access
 189  ***************************************************************************/
 190 static void ecore_spq_hw_initialize(struct ecore_hwfn *p_hwfn,
 191                                     struct ecore_spq *p_spq)
 192 {
 193         struct e4_core_conn_context *p_cxt;
 194         struct ecore_cxt_info cxt_info;
 195         u16 physical_q;
 196         enum _ecore_status_t rc;
 197
 198         cxt_info.iid = p_spq->cid;
 199
 200         rc = ecore_cxt_get_cid_info(p_hwfn, &cxt_info);
 201
 202         if (rc < 0) {
 203                 DP_NOTICE(p_hwfn, true, "Cannot find context info for cid=%d\n",
 204                           p_spq->cid);
 205                 return;
 206         }
 207
 208         p_cxt = cxt_info.p_cxt;
 209
 210         /* @@@TBD we zero the context until we have ilt_reset implemented. */
 211         OSAL_MEM_ZERO(p_cxt, sizeof(*p_cxt));
 212
 213         if (ECORE_IS_BB(p_hwfn->p_dev) || ECORE_IS_AH(p_hwfn->p_dev)) {
 214                 SET_FIELD(p_cxt->xstorm_ag_context.flags10,
 215                           E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_EN, 1);
 216                 SET_FIELD(p_cxt->xstorm_ag_context.flags1,
 217                           E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_ACTIVE, 1);
 218                 /* SET_FIELD(p_cxt->xstorm_ag_context.flags10,
 219                  *        E4_XSTORM_CORE_CONN_AG_CTX_SLOW_PATH_EN, 1);
 220                  */
 221                 SET_FIELD(p_cxt->xstorm_ag_context.flags9,
 222                           E4_XSTORM_CORE_CONN_AG_CTX_CONSOLID_PROD_CF_EN, 1);
 223         }
 224
 225         /* CDU validation - FIXME currently disabled */
 226
 227         /* QM physical queue */
 228         physical_q = ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB);
 229         p_cxt->xstorm_ag_context.physical_q0 = OSAL_CPU_TO_LE16(physical_q);
 230
 231         p_cxt->xstorm_st_context.spq_base_lo =
 232             DMA_LO_LE(p_spq->chain.p_phys_addr);
 233         p_cxt->xstorm_st_context.spq_base_hi =
 234             DMA_HI_LE(p_spq->chain.p_phys_addr);
 235
 236         DMA_REGPAIR_LE(p_cxt->xstorm_st_context.consolid_base_addr,
 237                        p_hwfn->p_consq->chain.p_phys_addr);
 238 }
 239
 240 static enum _ecore_status_t ecore_spq_hw_post(struct ecore_hwfn *p_hwfn,
 241                                               struct ecore_spq *p_spq,
 242                                               struct ecore_spq_entry *p_ent)
 243 {
 244         struct ecore_chain *p_chain = &p_hwfn->p_spq->chain;
 245         struct core_db_data *p_db_data = &p_spq->db_data;
 246         u16 echo = ecore_chain_get_prod_idx(p_chain);
 247         struct slow_path_element *elem;
 248
 249         p_ent->elem.hdr.echo = OSAL_CPU_TO_LE16(echo);
 250         elem = ecore_chain_produce(p_chain);
 251         if (!elem) {
 252                 DP_NOTICE(p_hwfn, true, "Failed to produce from SPQ chain\n");
 253                 return ECORE_INVAL;
 254         }
 255
 256         *elem = p_ent->elem;    /* Struct assignment */
 257
 258         p_db_data->spq_prod =
 259                 OSAL_CPU_TO_LE16(ecore_chain_get_prod_idx(p_chain));
 260
 261         /* Make sure the SPQE is updated before the doorbell */
 262         OSAL_WMB(p_hwfn->p_dev);
 263
 264         DOORBELL(p_hwfn, p_spq->db_addr_offset, *(u32 *)p_db_data);
 265
 266         /* Make sure doorbell is rang */
 267         OSAL_WMB(p_hwfn->p_dev);
 268
 269         DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
 270                    "Doorbelled [0x%08x, CID 0x%08x] with Flags: %02x"
 271                    " agg_params: %02x, prod: %04x\n",
 272                    p_spq->db_addr_offset, p_spq->cid, p_db_data->params,
 273                    p_db_data->agg_flags, ecore_chain_get_prod_idx(p_chain));
 274
 275         return ECORE_SUCCESS;
 276 }
 277
 278 /***************************************************************************
 279  * Asynchronous events
 280  ***************************************************************************/
 281
 282 static enum _ecore_status_t
 283 ecore_async_event_completion(struct ecore_hwfn *p_hwfn,
 284                              struct event_ring_entry *p_eqe)
 285 {
 286         ecore_spq_async_comp_cb cb;
 287
 288         if (!p_hwfn->p_spq || (p_eqe->protocol_id >= MAX_PROTOCOL_TYPE))
 289                 return ECORE_INVAL;
 290
 291         cb = p_hwfn->p_spq->async_comp_cb[p_eqe->protocol_id];
 292         if (cb) {
 293                 return cb(p_hwfn, p_eqe->opcode, p_eqe->echo,
 294                           &p_eqe->data, p_eqe->fw_return_code);
 295         } else {
 296                 DP_NOTICE(p_hwfn,
 297                           true, "Unknown Async completion for protocol: %d\n",
 298                           p_eqe->protocol_id);
 299                 return ECORE_INVAL;
 300         }
 301 }
 302
 303 enum _ecore_status_t
 304 ecore_spq_register_async_cb(struct ecore_hwfn *p_hwfn,
 305                             enum protocol_type protocol_id,
 306                             ecore_spq_async_comp_cb cb)
 307 {
 308         if (!p_hwfn->p_spq || (protocol_id >= MAX_PROTOCOL_TYPE))
 309                 return ECORE_INVAL;
 310
 311         p_hwfn->p_spq->async_comp_cb[protocol_id] = cb;
 312         return ECORE_SUCCESS;
 313 }
 314
 315 void
 316 ecore_spq_unregister_async_cb(struct ecore_hwfn *p_hwfn,
 317                               enum protocol_type protocol_id)
 318 {
 319         if (!p_hwfn->p_spq || (protocol_id >= MAX_PROTOCOL_TYPE))
 320                 return;
 321
 322         p_hwfn->p_spq->async_comp_cb[protocol_id] = OSAL_NULL;
 323 }
 324
 325 /***************************************************************************
 326  * EQ API
 327  ***************************************************************************/
 328 void ecore_eq_prod_update(struct ecore_hwfn *p_hwfn, u16 prod)
 329 {
 330         u32 addr = GTT_BAR0_MAP_REG_USDM_RAM +
 331             USTORM_EQE_CONS_OFFSET(p_hwfn->rel_pf_id);
 332
 333         REG_WR16(p_hwfn, addr, prod);
 334
 335         /* keep prod updates ordered */
 336         OSAL_MMIOWB(p_hwfn->p_dev);
 337 }
 338
 339 enum _ecore_status_t ecore_eq_completion(struct ecore_hwfn *p_hwfn,
 340                                          void *cookie)
 341 {
 342         struct ecore_eq *p_eq = cookie;
 343         struct ecore_chain *p_chain = &p_eq->chain;
 344         enum _ecore_status_t rc = 0;
 345
 346         /* take a snapshot of the FW consumer */
 347         u16 fw_cons_idx = OSAL_LE16_TO_CPU(*p_eq->p_fw_cons);
 348
 349         DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "fw_cons_idx %x\n", fw_cons_idx);
 350
 351         /* Need to guarantee the fw_cons index we use points to a usuable
 352          * element (to comply with our chain), so our macros would comply
 353          */
 354         if ((fw_cons_idx & ecore_chain_get_usable_per_page(p_chain)) ==
 355             ecore_chain_get_usable_per_page(p_chain)) {
 356                 fw_cons_idx += ecore_chain_get_unusable_per_page(p_chain);
 357         }
 358
 359         /* Complete current segment of eq entries */
 360         while (fw_cons_idx != ecore_chain_get_cons_idx(p_chain)) {
 361                 struct event_ring_entry *p_eqe = ecore_chain_consume(p_chain);
 362                 if (!p_eqe) {
 363                         rc = ECORE_INVAL;
 364                         break;
 365                 }
 366
 367                 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
 368                            "op %x prot %x res0 %x echo %x fwret %x flags %x\n",
 369                            p_eqe->opcode,            /* Event Opcode */
 370                            p_eqe->protocol_id,  /* Event Protocol ID */
 371                            p_eqe->reserved0,    /* Reserved */
 372                            /* Echo value from ramrod data on the host */
 373                            OSAL_LE16_TO_CPU(p_eqe->echo),
 374                            p_eqe->fw_return_code,    /* FW return code for SP
 375                                                       * ramrods
 376                                                       */
 377                            p_eqe->flags);
 378
 379                 if (GET_FIELD(p_eqe->flags, EVENT_RING_ENTRY_ASYNC)) {
 380                         if (ecore_async_event_completion(p_hwfn, p_eqe))
 381                                 rc = ECORE_INVAL;
 382                 } else if (ecore_spq_completion(p_hwfn,
 383                                                 p_eqe->echo,
 384                                                 p_eqe->fw_return_code,
 385                                                 &p_eqe->data)) {
 386                         rc = ECORE_INVAL;
 387                 }
 388
 389                 ecore_chain_recycle_consumed(p_chain);
 390         }
 391
 392         ecore_eq_prod_update(p_hwfn, ecore_chain_get_prod_idx(p_chain));
 393
 394         return rc;
 395 }
 396
 397 enum _ecore_status_t ecore_eq_alloc(struct ecore_hwfn *p_hwfn, u16 num_elem)
 398 {
 399         struct ecore_eq *p_eq;
 400
 401         /* Allocate EQ struct */
 402         p_eq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_eq));
 403         if (!p_eq) {
 404                 DP_NOTICE(p_hwfn, false,
 405                           "Failed to allocate `struct ecore_eq'\n");
 406                 return ECORE_NOMEM;
 407         }
 408
 409         /* Allocate and initialize EQ chain*/
 410         if (ecore_chain_alloc(p_hwfn->p_dev,
 411                               ECORE_CHAIN_USE_TO_PRODUCE,
 412                               ECORE_CHAIN_MODE_PBL,
 413                               ECORE_CHAIN_CNT_TYPE_U16,
 414                               num_elem,
 415                               sizeof(union event_ring_element),
 416                               &p_eq->chain, OSAL_NULL) != ECORE_SUCCESS) {
 417                 DP_NOTICE(p_hwfn, false, "Failed to allocate eq chain\n");
 418                 goto eq_allocate_fail;
 419         }
 420
 421         /* register EQ completion on the SP SB */
 422         ecore_int_register_cb(p_hwfn, ecore_eq_completion,
 423                               p_eq, &p_eq->eq_sb_index, &p_eq->p_fw_cons);
 424
 425         p_hwfn->p_eq = p_eq;
 426         return ECORE_SUCCESS;
 427
 428 eq_allocate_fail:
 429         OSAL_FREE(p_hwfn->p_dev, p_eq);
 430         return ECORE_NOMEM;
 431 }
 432
 433 void ecore_eq_setup(struct ecore_hwfn *p_hwfn)
 434 {
 435         ecore_chain_reset(&p_hwfn->p_eq->chain);
 436 }
 437
 438 void ecore_eq_free(struct ecore_hwfn *p_hwfn)
 439 {
 440         if (!p_hwfn->p_eq)
 441                 return;
 442
 443         ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_eq->chain);
 444
 445         OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_eq);
 446         p_hwfn->p_eq = OSAL_NULL;
 447 }
 448
 449 /***************************************************************************
 450 * CQE API - manipulate EQ functionality
 451 ***************************************************************************/
 452 static enum _ecore_status_t ecore_cqe_completion(struct ecore_hwfn *p_hwfn,
 453                                                  struct eth_slow_path_rx_cqe
 454                                                  *cqe,
 455                                                  enum protocol_type protocol)
 456 {
 457         if (IS_VF(p_hwfn->p_dev))
 458                 return OSAL_VF_CQE_COMPLETION(p_hwfn, cqe, protocol);
 459
 460         /* @@@tmp - it's possible we'll eventually want to handle some
 461          * actual commands that can arrive here, but for now this is only
 462          * used to complete the ramrod using the echo value on the cqe
 463          */
 464         return ecore_spq_completion(p_hwfn, cqe->echo, 0, OSAL_NULL);
 465 }
 466
 467 enum _ecore_status_t ecore_eth_cqe_completion(struct ecore_hwfn *p_hwfn,
 468                                               struct eth_slow_path_rx_cqe *cqe)
 469 {
 470         enum _ecore_status_t rc;
 471
 472         rc = ecore_cqe_completion(p_hwfn, cqe, PROTOCOLID_ETH);
 473         if (rc) {
 474                 DP_NOTICE(p_hwfn, true,
 475                           "Failed to handle RXQ CQE [cmd 0x%02x]\n",
 476                           cqe->ramrod_cmd_id);
 477         }
 478
 479         return rc;
 480 }
 481
 482 /***************************************************************************
 483  * Slow hwfn Queue (spq)
 484  ***************************************************************************/
 485 void ecore_spq_setup(struct ecore_hwfn *p_hwfn)
 486 {
 487         struct ecore_spq *p_spq = p_hwfn->p_spq;
 488         struct ecore_spq_entry *p_virt = OSAL_NULL;
 489         struct core_db_data *p_db_data;
 490         void OSAL_IOMEM *db_addr;
 491         dma_addr_t p_phys = 0;
 492         u32 i, capacity;
 493         enum _ecore_status_t rc;
 494
 495         OSAL_LIST_INIT(&p_spq->pending);
 496         OSAL_LIST_INIT(&p_spq->completion_pending);
 497         OSAL_LIST_INIT(&p_spq->free_pool);
 498         OSAL_LIST_INIT(&p_spq->unlimited_pending);
 499         OSAL_SPIN_LOCK_INIT(&p_spq->lock);
 500
 501         /* SPQ empty pool */
 502         p_phys = p_spq->p_phys + OFFSETOF(struct ecore_spq_entry, ramrod);
 503         p_virt = p_spq->p_virt;
 504
 505         capacity = ecore_chain_get_capacity(&p_spq->chain);
 506         for (i = 0; i < capacity; i++) {
 507                 DMA_REGPAIR_LE(p_virt->elem.data_ptr, p_phys);
 508
 509                 OSAL_LIST_PUSH_TAIL(&p_virt->list, &p_spq->free_pool);
 510
 511                 p_virt++;
 512                 p_phys += sizeof(struct ecore_spq_entry);
 513         }
 514
 515         /* Statistics */
 516         p_spq->normal_count = 0;
 517         p_spq->comp_count = 0;
 518         p_spq->comp_sent_count = 0;
 519         p_spq->unlimited_pending_count = 0;
 520
 521         OSAL_MEM_ZERO(p_spq->p_comp_bitmap,
 522                       SPQ_COMP_BMAP_SIZE * sizeof(unsigned long));
 523         p_spq->comp_bitmap_idx = 0;
 524
 525         /* SPQ cid, cannot fail */
 526         ecore_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_spq->cid);
 527         ecore_spq_hw_initialize(p_hwfn, p_spq);
 528
 529         /* reset the chain itself */
 530         ecore_chain_reset(&p_spq->chain);
 531
 532         /* Initialize the address/data of the SPQ doorbell */
 533         p_spq->db_addr_offset = DB_ADDR(p_spq->cid, DQ_DEMS_LEGACY);
 534         p_db_data = &p_spq->db_data;
 535         OSAL_MEM_ZERO(p_db_data, sizeof(*p_db_data));
 536         SET_FIELD(p_db_data->params, CORE_DB_DATA_DEST, DB_DEST_XCM);
 537         SET_FIELD(p_db_data->params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_MAX);
 538         SET_FIELD(p_db_data->params, CORE_DB_DATA_AGG_VAL_SEL,
 539                   DQ_XCM_CORE_SPQ_PROD_CMD);
 540         p_db_data->agg_flags = DQ_XCM_CORE_DQ_CF_CMD;
 541
 542         /* Register the SPQ doorbell with the doorbell recovery mechanism */
 543         db_addr = (void *)((u8 *)p_hwfn->doorbells + p_spq->db_addr_offset);
 544         rc = ecore_db_recovery_add(p_hwfn->p_dev, db_addr, &p_spq->db_data,
 545                                    DB_REC_WIDTH_32B, DB_REC_KERNEL);
 546         if (rc != ECORE_SUCCESS)
 547                 DP_INFO(p_hwfn,
 548                         "Failed to register the SPQ doorbell with the doorbell recovery mechanism\n");
 549 }
 550
 551 enum _ecore_status_t ecore_spq_alloc(struct ecore_hwfn *p_hwfn)
 552 {
 553         struct ecore_spq_entry *p_virt = OSAL_NULL;
 554         struct ecore_spq *p_spq = OSAL_NULL;
 555         dma_addr_t p_phys = 0;
 556         u32 capacity;
 557
 558         /* SPQ struct */
 559         p_spq =
 560             OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(struct ecore_spq));
 561         if (!p_spq) {
 562                 DP_NOTICE(p_hwfn, false, "Failed to allocate `struct ecore_spq'\n");
 563                 return ECORE_NOMEM;
 564         }
 565
 566         /* SPQ ring  */
 567         if (ecore_chain_alloc(p_hwfn->p_dev,
 568                               ECORE_CHAIN_USE_TO_PRODUCE,
 569                               ECORE_CHAIN_MODE_SINGLE,
 570                               ECORE_CHAIN_CNT_TYPE_U16,
 571                               0, /* N/A when the mode is SINGLE */
 572                               sizeof(struct slow_path_element),
 573                               &p_spq->chain, OSAL_NULL)) {
 574                 DP_NOTICE(p_hwfn, false, "Failed to allocate spq chain\n");
 575                 goto spq_allocate_fail;
 576         }
 577
 578         /* allocate and fill the SPQ elements (incl. ramrod data list) */
 579         capacity = ecore_chain_get_capacity(&p_spq->chain);
 580         p_virt = OSAL_DMA_ALLOC_COHERENT(p_hwfn->p_dev, &p_phys,
 581                                          capacity *
 582                                          sizeof(struct ecore_spq_entry));
 583         if (!p_virt)
 584                 goto spq_allocate_fail;
 585
 586         p_spq->p_virt = p_virt;
 587         p_spq->p_phys = p_phys;
 588
 589 #ifdef CONFIG_ECORE_LOCK_ALLOC
 590         if (OSAL_SPIN_LOCK_ALLOC(p_hwfn, &p_spq->lock))
 591                 goto spq_allocate_fail;
 592 #endif
 593
 594         p_hwfn->p_spq = p_spq;
 595         return ECORE_SUCCESS;
 596
 597 spq_allocate_fail:
 598         ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
 599         OSAL_FREE(p_hwfn->p_dev, p_spq);
 600         return ECORE_NOMEM;
 601 }
 602
 603 void ecore_spq_free(struct ecore_hwfn *p_hwfn)
 604 {
 605         struct ecore_spq *p_spq = p_hwfn->p_spq;
 606         void OSAL_IOMEM *db_addr;
 607         u32 capacity;
 608
 609         if (!p_spq)
 610                 return;
 611
 612         /* Delete the SPQ doorbell from the doorbell recovery mechanism */
 613         db_addr = (void *)((u8 *)p_hwfn->doorbells + p_spq->db_addr_offset);
 614         ecore_db_recovery_del(p_hwfn->p_dev, db_addr, &p_spq->db_data);
 615
 616         if (p_spq->p_virt) {
 617                 capacity = ecore_chain_get_capacity(&p_spq->chain);
 618                 OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev,
 619                                        p_spq->p_virt,
 620                                        p_spq->p_phys,
 621                                        capacity *
 622                                        sizeof(struct ecore_spq_entry));
 623         }
 624
 625         ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
 626 #ifdef CONFIG_ECORE_LOCK_ALLOC
 627         OSAL_SPIN_LOCK_DEALLOC(&p_spq->lock);
 628 #endif
 629
 630         OSAL_FREE(p_hwfn->p_dev, p_spq);
 631 }
 632
 633 enum _ecore_status_t
 634 ecore_spq_get_entry(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry **pp_ent)
 635 {
 636         struct ecore_spq *p_spq = p_hwfn->p_spq;
 637         struct ecore_spq_entry *p_ent = OSAL_NULL;
 638         enum _ecore_status_t rc = ECORE_SUCCESS;
 639
 640         OSAL_SPIN_LOCK(&p_spq->lock);
 641
 642         if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
 643                 p_ent = OSAL_ZALLOC(p_hwfn->p_dev, GFP_ATOMIC, sizeof(*p_ent));
 644                 if (!p_ent) {
 645                         DP_NOTICE(p_hwfn, false, "Failed to allocate an SPQ entry for a pending ramrod\n");
 646                         rc = ECORE_NOMEM;
 647                         goto out_unlock;
 648                 }
 649                 p_ent->queue = &p_spq->unlimited_pending;
 650         } else {
 651                 p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
 652                                               struct ecore_spq_entry, list);
 653                 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->free_pool);
 654                 p_ent->queue = &p_spq->pending;
 655         }
 656
 657         *pp_ent = p_ent;
 658
 659 out_unlock:
 660         OSAL_SPIN_UNLOCK(&p_spq->lock);
 661         return rc;
 662 }
 663
 664 /* Locked variant; Should be called while the SPQ lock is taken */
 665 static void __ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
 666                                      struct ecore_spq_entry *p_ent)
 667 {
 668         OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_hwfn->p_spq->free_pool);
 669 }
 670
 671 void ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
 672                             struct ecore_spq_entry *p_ent)
 673 {
 674         OSAL_SPIN_LOCK(&p_hwfn->p_spq->lock);
 675         __ecore_spq_return_entry(p_hwfn, p_ent);
 676         OSAL_SPIN_UNLOCK(&p_hwfn->p_spq->lock);
 677 }
 678
 679 /**
 680  * @brief ecore_spq_add_entry - adds a new entry to the pending
 681  *        list. Should be used while lock is being held.
 682  *
 683  * Addes an entry to the pending list is there is room (en empty
 684  * element is available in the free_pool), or else places the
 685  * entry in the unlimited_pending pool.
 686  *
 687  * @param p_hwfn
 688  * @param p_ent
 689  * @param priority
 690  *
 691  * @return enum _ecore_status_t
 692  */
 693 static enum _ecore_status_t
 694 ecore_spq_add_entry(struct ecore_hwfn *p_hwfn,
 695                     struct ecore_spq_entry *p_ent, enum spq_priority priority)
 696 {
 697         struct ecore_spq *p_spq = p_hwfn->p_spq;
 698
 699         if (p_ent->queue == &p_spq->unlimited_pending) {
 700                 if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
 701                         OSAL_LIST_PUSH_TAIL(&p_ent->list,
 702                                             &p_spq->unlimited_pending);
 703                         p_spq->unlimited_pending_count++;
 704
 705                         return ECORE_SUCCESS;
 706
 707                 } else {
 708                         struct ecore_spq_entry *p_en2;
 709
 710                         p_en2 = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
 711                                                      struct ecore_spq_entry,
 712                                                      list);
 713                         OSAL_LIST_REMOVE_ENTRY(&p_en2->list, &p_spq->free_pool);
 714
 715                         /* Copy the ring element physical pointer to the new
 716                          * entry, since we are about to override the entire ring
 717                          * entry and don't want to lose the pointer.
 718                          */
 719                         p_ent->elem.data_ptr = p_en2->elem.data_ptr;
 720
 721                         *p_en2 = *p_ent;
 722
 723                         /* EBLOCK responsible to free the allocated p_ent */
 724                         if (p_ent->comp_mode != ECORE_SPQ_MODE_EBLOCK)
 725                                 OSAL_FREE(p_hwfn->p_dev, p_ent);
 726
 727                         p_ent = p_en2;
 728                 }
 729         }
 730
 731         /* entry is to be placed in 'pending' queue */
 732         switch (priority) {
 733         case ECORE_SPQ_PRIORITY_NORMAL:
 734                 OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->pending);
 735                 p_spq->normal_count++;
 736                 break;
 737         case ECORE_SPQ_PRIORITY_HIGH:
 738                 OSAL_LIST_PUSH_HEAD(&p_ent->list, &p_spq->pending);
 739                 p_spq->high_count++;
 740                 break;
 741         default:
 742                 return ECORE_INVAL;
 743         }
 744
 745         return ECORE_SUCCESS;
 746 }
 747
 748 /***************************************************************************
 749  * Accessor
 750  ***************************************************************************/
 751
 752 u32 ecore_spq_get_cid(struct ecore_hwfn *p_hwfn)
 753 {
 754         if (!p_hwfn->p_spq)
 755                 return 0xffffffff;      /* illegal */
 756         return p_hwfn->p_spq->cid;
 757 }
 758
 759 /***************************************************************************
 760  * Posting new Ramrods
 761  ***************************************************************************/
 762
 763 static enum _ecore_status_t ecore_spq_post_list(struct ecore_hwfn *p_hwfn,
 764                                                 osal_list_t *head,
 765                                                 u32 keep_reserve)
 766 {
 767         struct ecore_spq *p_spq = p_hwfn->p_spq;
 768         enum _ecore_status_t rc;
 769
 770         /* TODO - implementation might be wasteful; will always keep room
 771          * for an additional high priority ramrod (even if one is already
 772          * pending FW)
 773          */
 774         while (ecore_chain_get_elem_left(&p_spq->chain) > keep_reserve &&
 775                !OSAL_LIST_IS_EMPTY(head)) {
 776                 struct ecore_spq_entry *p_ent =
 777                     OSAL_LIST_FIRST_ENTRY(head, struct ecore_spq_entry, list);
 778                 if (p_ent != OSAL_NULL) {
 779 #if defined(_NTDDK_)
 780 #pragma warning(suppress : 6011 28182)
 781 #endif
 782                         OSAL_LIST_REMOVE_ENTRY(&p_ent->list, head);
 783                         OSAL_LIST_PUSH_TAIL(&p_ent->list,
 784                                             &p_spq->completion_pending);
 785                         p_spq->comp_sent_count++;
 786
 787                         rc = ecore_spq_hw_post(p_hwfn, p_spq, p_ent);
 788                         if (rc) {
 789                                 OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
 790                                                     &p_spq->completion_pending);
 791                                 __ecore_spq_return_entry(p_hwfn, p_ent);
 792                                 return rc;
 793                         }
 794                 }
 795         }
 796
 797         return ECORE_SUCCESS;
 798 }
 799
 800 static enum _ecore_status_t ecore_spq_pend_post(struct ecore_hwfn *p_hwfn)
 801 {
 802         struct ecore_spq *p_spq = p_hwfn->p_spq;
 803         struct ecore_spq_entry *p_ent = OSAL_NULL;
 804
 805         while (!OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
 806                 if (OSAL_LIST_IS_EMPTY(&p_spq->unlimited_pending))
 807                         break;
 808
 809                 p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->unlimited_pending,
 810                                               struct ecore_spq_entry, list);
 811                 if (!p_ent)
 812                         return ECORE_INVAL;
 813
 814 #if defined(_NTDDK_)
 815 #pragma warning(suppress : 6011)
 816 #endif
 817                 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->unlimited_pending);
 818
 819                 ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
 820         }
 821
 822         return ecore_spq_post_list(p_hwfn,
 823                                  &p_spq->pending, SPQ_HIGH_PRI_RESERVE_DEFAULT);
 824 }
 825
 826 enum _ecore_status_t ecore_spq_post(struct ecore_hwfn *p_hwfn,
 827                                     struct ecore_spq_entry *p_ent,
 828                                     u8 *fw_return_code)
 829 {
 830         enum _ecore_status_t rc = ECORE_SUCCESS;
 831         struct ecore_spq *p_spq = p_hwfn ? p_hwfn->p_spq : OSAL_NULL;
 832         bool b_ret_ent = true;
 833
 834         if (!p_hwfn)
 835                 return ECORE_INVAL;
 836
 837         if (!p_ent) {
 838                 DP_NOTICE(p_hwfn, true, "Got a NULL pointer\n");
 839                 return ECORE_INVAL;
 840         }
 841
 842         if (p_hwfn->p_dev->recov_in_prog) {
 843                 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
 844                            "Recovery is in progress -> skip spq post"
 845                            " [cmd %02x protocol %02x]\n",
 846                            p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id);
 847                 /* Return success to let the flows to be completed successfully
 848                  * w/o any error handling.
 849                  */
 850                 return ECORE_SUCCESS;
 851         }
 852
 853         OSAL_SPIN_LOCK(&p_spq->lock);
 854
 855         /* Complete the entry */
 856         rc = ecore_spq_fill_entry(p_hwfn, p_ent);
 857
 858         /* Check return value after LOCK is taken for cleaner error flow */
 859         if (rc)
 860                 goto spq_post_fail;
 861
 862         /* Add the request to the pending queue */
 863         rc = ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
 864         if (rc)
 865                 goto spq_post_fail;
 866
 867         rc = ecore_spq_pend_post(p_hwfn);
 868         if (rc) {
 869                 /* Since it's possible that pending failed for a different
 870                  * entry [although unlikely], the failed entry was already
 871                  * dealt with; No need to return it here.
 872                  */
 873                 b_ret_ent = false;
 874                 goto spq_post_fail;
 875         }
 876
 877         OSAL_SPIN_UNLOCK(&p_spq->lock);
 878
 879         if (p_ent->comp_mode == ECORE_SPQ_MODE_EBLOCK) {
 880                 /* For entries in ECORE BLOCK mode, the completion code cannot
 881                  * perform the necessary cleanup - if it did, we couldn't
 882                  * access p_ent here to see whether it's successful or not.
 883                  * Thus, after gaining the answer perform the cleanup here.
 884                  */
 885                 rc = ecore_spq_block(p_hwfn, p_ent, fw_return_code,
 886                                      p_ent->queue == &p_spq->unlimited_pending);
 887
 888                 if (p_ent->queue == &p_spq->unlimited_pending) {
 889                         /* This is an allocated p_ent which does not need to
 890                          * return to pool.
 891                          */
 892                         OSAL_FREE(p_hwfn->p_dev, p_ent);
 893
 894                         /* TBD: handle error flow and remove p_ent from
 895                          * completion pending
 896                          */
 897                         return rc;
 898                 }
 899
 900                 if (rc)
 901                         goto spq_post_fail2;
 902
 903                 /* return to pool */
 904                 ecore_spq_return_entry(p_hwfn, p_ent);
 905         }
 906         return rc;
 907
 908 spq_post_fail2:
 909         OSAL_SPIN_LOCK(&p_spq->lock);
 910         OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->completion_pending);
 911         ecore_chain_return_produced(&p_spq->chain);
 912
 913 spq_post_fail:
 914         /* return to the free pool */
 915         if (b_ret_ent)
 916                 __ecore_spq_return_entry(p_hwfn, p_ent);
 917         OSAL_SPIN_UNLOCK(&p_spq->lock);
 918
 919         return rc;
 920 }
 921
 922 enum _ecore_status_t ecore_spq_completion(struct ecore_hwfn *p_hwfn,
 923                                           __le16 echo,
 924                                           u8 fw_return_code,
 925                                           union event_ring_data *p_data)
 926 {
 927         struct ecore_spq *p_spq;
 928         struct ecore_spq_entry *p_ent = OSAL_NULL;
 929         struct ecore_spq_entry *tmp;
 930         struct ecore_spq_entry *found = OSAL_NULL;
 931         enum _ecore_status_t rc;
 932
 933         if (!p_hwfn)
 934                 return ECORE_INVAL;
 935
 936         p_spq = p_hwfn->p_spq;
 937         if (!p_spq)
 938                 return ECORE_INVAL;
 939
 940         OSAL_SPIN_LOCK(&p_spq->lock);
 941         OSAL_LIST_FOR_EACH_ENTRY_SAFE(p_ent,
 942                                       tmp,
 943                                       &p_spq->completion_pending,
 944                                       list, struct ecore_spq_entry) {
 945                 if (p_ent->elem.hdr.echo == echo) {
 946                         OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
 947                                                &p_spq->completion_pending);
 948
 949                         /* Avoid overriding of SPQ entries when getting
 950                          * out-of-order completions, by marking the completions
 951                          * in a bitmap and increasing the chain consumer only
 952                          * for the first successive completed entries.
 953                          */
 954                         SPQ_COMP_BMAP_SET_BIT(p_spq, echo);
 955                         while (SPQ_COMP_BMAP_TEST_BIT(p_spq,
 956                                                       p_spq->comp_bitmap_idx)) {
 957                                 SPQ_COMP_BMAP_CLEAR_BIT(p_spq,
 958                                                         p_spq->comp_bitmap_idx);
 959                                 p_spq->comp_bitmap_idx++;
 960                                 ecore_chain_return_produced(&p_spq->chain);
 961                         }
 962
 963                         p_spq->comp_count++;
 964                         found = p_ent;
 965                         break;
 966                 }
 967
 968                 /* This is debug and should be relatively uncommon - depends
 969                  * on scenarios which have mutliple per-PF sent ramrods.
 970                  */
 971                 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
 972                            "Got completion for echo %04x - doesn't match"
 973                            " echo %04x in completion pending list\n",
 974                            OSAL_LE16_TO_CPU(echo),
 975                            OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
 976         }
 977
 978         /* Release lock before callback, as callback may post
 979          * an additional ramrod.
 980          */
 981         OSAL_SPIN_UNLOCK(&p_spq->lock);
 982
 983         if (!found) {
 984                 DP_NOTICE(p_hwfn, true,
 985                           "Failed to find an entry this"
 986                           " EQE [echo %04x] completes\n",
 987                           OSAL_LE16_TO_CPU(echo));
 988                 return ECORE_EXISTS;
 989         }
 990
 991         DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
 992                    "Complete EQE [echo %04x]: func %p cookie %p)\n",
 993                    OSAL_LE16_TO_CPU(echo),
 994                    p_ent->comp_cb.function, p_ent->comp_cb.cookie);
 995         if (found->comp_cb.function)
 996                 found->comp_cb.function(p_hwfn, found->comp_cb.cookie, p_data,
 997                                         fw_return_code);
 998         else
 999                 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
1000                            "Got a completion without a callback function\n");
1001
1002         if ((found->comp_mode != ECORE_SPQ_MODE_EBLOCK) ||
1003             (found->queue == &p_spq->unlimited_pending))
1004                 /* EBLOCK  is responsible for returning its own entry into the
1005                  * free list, unless it originally added the entry into the
1006                  * unlimited pending list.
1007                  */
1008                 ecore_spq_return_entry(p_hwfn, found);
1009
1010         /* Attempt to post pending requests */
1011         OSAL_SPIN_LOCK(&p_spq->lock);
1012         rc = ecore_spq_pend_post(p_hwfn);
1013         OSAL_SPIN_UNLOCK(&p_spq->lock);
1014
1015         return rc;
1016 }
1017
1018 enum _ecore_status_t ecore_consq_alloc(struct ecore_hwfn *p_hwfn)
1019 {
1020         struct ecore_consq *p_consq;
1021
1022         /* Allocate ConsQ struct */
1023         p_consq =
1024             OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_consq));
1025         if (!p_consq) {
1026                 DP_NOTICE(p_hwfn, false,
1027                           "Failed to allocate `struct ecore_consq'\n");
1028                 return ECORE_NOMEM;
1029         }
1030
1031         /* Allocate and initialize EQ chain */
1032         if (ecore_chain_alloc(p_hwfn->p_dev,
1033                               ECORE_CHAIN_USE_TO_PRODUCE,
1034                               ECORE_CHAIN_MODE_PBL,
1035                               ECORE_CHAIN_CNT_TYPE_U16,
1036                               ECORE_CHAIN_PAGE_SIZE / 0x80,
1037                               0x80,
1038                               &p_consq->chain, OSAL_NULL) != ECORE_SUCCESS) {
1039                 DP_NOTICE(p_hwfn, false, "Failed to allocate consq chain");
1040                 goto consq_allocate_fail;
1041         }
1042
1043         p_hwfn->p_consq = p_consq;
1044         return ECORE_SUCCESS;
1045
1046 consq_allocate_fail:
1047         OSAL_FREE(p_hwfn->p_dev, p_consq);
1048         return ECORE_NOMEM;
1049 }
1050
1051 void ecore_consq_setup(struct ecore_hwfn *p_hwfn)
1052 {
1053         ecore_chain_reset(&p_hwfn->p_consq->chain);
1054 }
1055
1056 void ecore_consq_free(struct ecore_hwfn *p_hwfn)
1057 {
1058         if (!p_hwfn->p_consq)
1059                 return;
1060
1061         ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_consq->chain);
1062         OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_consq);
1063 }