sys/dev/qlnx/qlnxe/ecore_spq.c

   1 /*
   2  * Copyright (c) 2017-2018 Cavium, Inc.
   3  * All rights reserved.
   4  *
   5  *  Redistribution and use in source and binary forms, with or without
   6  *  modification, are permitted provided that the following conditions
   7  *  are met:
   8  *
   9  *  1. Redistributions of source code must retain the above copyright
  10  *     notice, this list of conditions and the following disclaimer.
  11  *  2. Redistributions in binary form must reproduce the above copyright
  12  *     notice, this list of conditions and the following disclaimer in the
  13  *     documentation and/or other materials provided with the distribution.
  14  *
  15  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  16  *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  19  *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  20  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  21  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  22  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  23  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  24  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  25  *  POSSIBILITY OF SUCH DAMAGE.
  26  */
  27 /*
  28  * File : ecore_spq.c
  29  */
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33
  34 #include "bcm_osal.h"
  35 #include "reg_addr.h"
  36 #include "ecore_gtt_reg_addr.h"
  37 #include "ecore_hsi_common.h"
  38 #include "ecore.h"
  39 #include "ecore_sp_api.h"
  40 #include "ecore_spq.h"
  41 #include "ecore_iro.h"
  42 #include "ecore_init_fw_funcs.h"
  43 #include "ecore_cxt.h"
  44 #include "ecore_int.h"
  45 #include "ecore_dev_api.h"
  46 #include "ecore_mcp.h"
  47 #ifdef CONFIG_ECORE_ROCE
  48 #include "ecore_roce.h"
  49 #endif
  50 #include "ecore_hw.h"
  51 #include "ecore_sriov.h"
  52 #ifdef CONFIG_ECORE_ISCSI
  53 #include "ecore_iscsi.h"
  54 #include "ecore_ooo.h"
  55 #endif
  56
  57 /***************************************************************************
  58  * Structures & Definitions
  59  ***************************************************************************/
  60
  61 #define SPQ_HIGH_PRI_RESERVE_DEFAULT    (1)
  62
  63 #define SPQ_BLOCK_DELAY_MAX_ITER        (10)
  64 #define SPQ_BLOCK_DELAY_US              (10)
  65 #define SPQ_BLOCK_SLEEP_MAX_ITER        (1000)
  66 #define SPQ_BLOCK_SLEEP_MS              (5)
  67
  68 #ifndef REMOVE_DBG
  69 /***************************************************************************
  70  * Debug [iSCSI] tool
  71  ***************************************************************************/
  72 static void ecore_iscsi_eq_dump(struct ecore_hwfn *p_hwfn,
  73                                 struct event_ring_entry *p_eqe)
  74 {
  75         if (p_eqe->opcode >= MAX_ISCSI_EQE_OPCODE) {
  76                 DP_NOTICE(p_hwfn, false, "Unknown iSCSI EQ: %x\n",
  77                           p_eqe->opcode);
  78         }
  79
  80         switch (p_eqe->opcode) {
  81         case ISCSI_EVENT_TYPE_INIT_FUNC:
  82         case ISCSI_EVENT_TYPE_DESTROY_FUNC:
  83                 /* NOPE */
  84                 break;
  85         case ISCSI_EVENT_TYPE_OFFLOAD_CONN:
  86         case ISCSI_EVENT_TYPE_TERMINATE_CONN:
  87                 DP_VERBOSE(p_hwfn, ECORE_MSG_STORAGE,
  88                            "iSCSI EQE: Port %x, Op %x, echo %x, FWret %x, CID %x, ConnID %x, ERR %x\n",
  89                            p_hwfn->port_id, p_eqe->opcode,
  90                            OSAL_LE16_TO_CPU(p_eqe->echo),
  91                            p_eqe->fw_return_code,
  92                            OSAL_LE32_TO_CPU(p_eqe->data.iscsi_info.cid),
  93                            OSAL_LE16_TO_CPU(p_eqe->data.iscsi_info.conn_id),
  94                            p_eqe->data.iscsi_info.error_code);
  95                 break;
  96         case ISCSI_EVENT_TYPE_UPDATE_CONN:
  97         case ISCSI_EVENT_TYPE_CLEAR_SQ:
  98         case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
  99         case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
 100         case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
 101         case ISCSI_EVENT_TYPE_ASYN_CLOSE_RCVD:
 102         case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
 103         case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
 104         case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
 105         case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
 106         case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
 107         case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
 108         case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
 109         default:
 110                 /* NOPE */
 111                 break;
 112         }
 113 }
 114 #endif
 115
 116 /***************************************************************************
 117  * Blocking Imp. (BLOCK/EBLOCK mode)
 118  ***************************************************************************/
 119 static void ecore_spq_blocking_cb(struct ecore_hwfn *p_hwfn, void *cookie,
 120                                   union event_ring_data OSAL_UNUSED *data,
 121                                   u8 fw_return_code)
 122 {
 123         struct ecore_spq_comp_done *comp_done;
 124
 125         comp_done = (struct ecore_spq_comp_done *)cookie;
 126
 127         comp_done->done = 0x1;
 128         comp_done->fw_return_code = fw_return_code;
 129
 130         /* make update visible to waiting thread */
 131         OSAL_SMP_WMB(p_hwfn->p_dev);
 132 }
 133
 134 static enum _ecore_status_t __ecore_spq_block(struct ecore_hwfn *p_hwfn,
 135                                               struct ecore_spq_entry *p_ent,
 136                                               u8 *p_fw_ret,
 137                                               bool sleep_between_iter)
 138 {
 139         struct ecore_spq_comp_done *comp_done;
 140         u32 iter_cnt;
 141
 142         comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
 143         iter_cnt = sleep_between_iter ? SPQ_BLOCK_SLEEP_MAX_ITER
 144                                       : SPQ_BLOCK_DELAY_MAX_ITER;
 145
 146         while (iter_cnt--) {
 147                 OSAL_POLL_MODE_DPC(p_hwfn);
 148                 OSAL_SMP_RMB(p_hwfn->p_dev);
 149                 if (comp_done->done == 1) {
 150                         if (p_fw_ret)
 151                                 *p_fw_ret = comp_done->fw_return_code;
 152                         return ECORE_SUCCESS;
 153                 }
 154
 155                 if (sleep_between_iter) {
 156                         OSAL_MSLEEP(SPQ_BLOCK_SLEEP_MS);
 157                 } else {
 158                         OSAL_UDELAY(SPQ_BLOCK_DELAY_US);
 159                 }
 160         }
 161
 162         return ECORE_TIMEOUT;
 163 }
 164
 165 static enum _ecore_status_t ecore_spq_block(struct ecore_hwfn *p_hwfn,
 166                                             struct ecore_spq_entry *p_ent,
 167                                             u8 *p_fw_ret, bool skip_quick_poll)
 168 {
 169         struct ecore_spq_comp_done *comp_done;
 170         struct ecore_ptt *p_ptt;
 171         enum _ecore_status_t rc;
 172
 173         /* A relatively short polling period w/o sleeping, to allow the FW to
 174          * complete the ramrod and thus possibly to avoid the following sleeps.
 175          */
 176         if (!skip_quick_poll) {
 177                 rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, false);
 178                 if (rc == ECORE_SUCCESS)
 179                         return ECORE_SUCCESS;
 180         }
 181
 182         /* Move to polling with a sleeping period between iterations */
 183         rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
 184         if (rc == ECORE_SUCCESS)
 185                 return ECORE_SUCCESS;
 186
 187         p_ptt = ecore_ptt_acquire(p_hwfn);
 188         if (!p_ptt) {
 189                 DP_NOTICE(p_hwfn, true, "ptt, failed to acquire\n");
 190                 return ECORE_AGAIN;
 191         }
 192
 193         DP_INFO(p_hwfn, "Ramrod is stuck, requesting MCP drain\n");
 194         rc = ecore_mcp_drain(p_hwfn, p_ptt);
 195         if (rc != ECORE_SUCCESS) {
 196                 DP_NOTICE(p_hwfn, true, "MCP drain failed\n");
 197                 goto err;
 198         }
 199
 200         /* Retry after drain */
 201         rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
 202         if (rc == ECORE_SUCCESS)
 203                 goto out;
 204
 205         comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
 206         if (comp_done->done == 1) {
 207                 if (p_fw_ret)
 208                         *p_fw_ret = comp_done->fw_return_code;
 209         }
 210 out:
 211         ecore_ptt_release(p_hwfn, p_ptt);
 212
 213         return ECORE_SUCCESS;
 214
 215 err:
 216         ecore_ptt_release(p_hwfn, p_ptt);
 217         DP_NOTICE(p_hwfn, true,
 218                   "Ramrod is stuck [CID %08x cmd %02x protocol %02x echo %04x]\n",
 219                   OSAL_LE32_TO_CPU(p_ent->elem.hdr.cid),
 220                   p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id,
 221                   OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
 222
 223         ecore_hw_err_notify(p_hwfn, ECORE_HW_ERR_RAMROD_FAIL);
 224
 225         return ECORE_BUSY;
 226 }
 227
 228 /***************************************************************************
 229  * SPQ entries inner API
 230  ***************************************************************************/
 231 static enum _ecore_status_t ecore_spq_fill_entry(struct ecore_hwfn *p_hwfn,
 232                                                  struct ecore_spq_entry *p_ent)
 233 {
 234         p_ent->flags = 0;
 235
 236         switch (p_ent->comp_mode) {
 237         case ECORE_SPQ_MODE_EBLOCK:
 238         case ECORE_SPQ_MODE_BLOCK:
 239                 p_ent->comp_cb.function = ecore_spq_blocking_cb;
 240                 break;
 241         case ECORE_SPQ_MODE_CB:
 242                 break;
 243         default:
 244                 DP_NOTICE(p_hwfn, true, "Unknown SPQE completion mode %d\n",
 245                           p_ent->comp_mode);
 246                 return ECORE_INVAL;
 247         }
 248
 249         DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
 250                    "Ramrod header: [CID 0x%08x CMD 0x%02x protocol 0x%02x] Data pointer: [%08x:%08x] Completion Mode: %s\n",
 251                    p_ent->elem.hdr.cid, p_ent->elem.hdr.cmd_id,
 252                    p_ent->elem.hdr.protocol_id,
 253                    p_ent->elem.data_ptr.hi, p_ent->elem.data_ptr.lo,
 254                    D_TRINE(p_ent->comp_mode, ECORE_SPQ_MODE_EBLOCK,
 255                            ECORE_SPQ_MODE_BLOCK, "MODE_EBLOCK", "MODE_BLOCK",
 256                            "MODE_CB"));
 257
 258         return ECORE_SUCCESS;
 259 }
 260
 261 /***************************************************************************
 262  * HSI access
 263  ***************************************************************************/
 264 static void ecore_spq_hw_initialize(struct ecore_hwfn *p_hwfn,
 265                                     struct ecore_spq  *p_spq)
 266 {
 267         struct e4_core_conn_context *p_cxt;
 268         struct ecore_cxt_info cxt_info;
 269         u16 physical_q;
 270         enum _ecore_status_t rc;
 271
 272         cxt_info.iid = p_spq->cid;
 273
 274         rc = ecore_cxt_get_cid_info(p_hwfn, &cxt_info);
 275
 276         if (rc < 0) {
 277                 DP_NOTICE(p_hwfn, true, "Cannot find context info for cid=%d\n",
 278                           p_spq->cid);
 279                 return;
 280         }
 281
 282         p_cxt = cxt_info.p_cxt;
 283
 284         /* @@@TBD we zero the context until we have ilt_reset implemented. */
 285         OSAL_MEM_ZERO(p_cxt, sizeof(*p_cxt));
 286
 287         if (ECORE_IS_BB(p_hwfn->p_dev) || ECORE_IS_AH(p_hwfn->p_dev)) {
 288                 SET_FIELD(p_cxt->xstorm_ag_context.flags10,
 289                           E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_EN, 1);
 290                 SET_FIELD(p_cxt->xstorm_ag_context.flags1,
 291                           E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_ACTIVE, 1);
 292                 /*SET_FIELD(p_cxt->xstorm_ag_context.flags10,
 293                           E4_XSTORM_CORE_CONN_AG_CTX_SLOW_PATH_EN, 1);*/
 294                 SET_FIELD(p_cxt->xstorm_ag_context.flags9,
 295                           E4_XSTORM_CORE_CONN_AG_CTX_CONSOLID_PROD_CF_EN, 1);
 296         } else { /* E5 */
 297                 ECORE_E5_MISSING_CODE;
 298         }
 299
 300         /* CDU validation - FIXME currently disabled */
 301
 302         /* QM physical queue */
 303         physical_q = ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB);
 304         p_cxt->xstorm_ag_context.physical_q0 = OSAL_CPU_TO_LE16(physical_q);
 305
 306         p_cxt->xstorm_st_context.spq_base_lo =
 307                 DMA_LO_LE(p_spq->chain.p_phys_addr);
 308         p_cxt->xstorm_st_context.spq_base_hi =
 309                 DMA_HI_LE(p_spq->chain.p_phys_addr);
 310
 311         DMA_REGPAIR_LE(p_cxt->xstorm_st_context.consolid_base_addr,
 312                        p_hwfn->p_consq->chain.p_phys_addr);
 313 }
 314
 315 static enum _ecore_status_t ecore_spq_hw_post(struct ecore_hwfn         *p_hwfn,
 316                                               struct ecore_spq          *p_spq,
 317                                               struct ecore_spq_entry    *p_ent)
 318 {
 319         struct ecore_chain *p_chain = &p_hwfn->p_spq->chain;
 320         u16 echo = ecore_chain_get_prod_idx(p_chain);
 321         struct slow_path_element *elem;
 322         struct core_db_data db;
 323
 324         p_ent->elem.hdr.echo = OSAL_CPU_TO_LE16(echo);
 325         elem = ecore_chain_produce(p_chain);
 326         if (!elem) {
 327                 DP_NOTICE(p_hwfn, true, "Failed to produce from SPQ chain\n");
 328                 return ECORE_INVAL;
 329         }
 330
 331         *elem = p_ent->elem; /* struct assignment */
 332
 333         /* send a doorbell on the slow hwfn session */
 334         OSAL_MEMSET(&db, 0, sizeof(db));
 335         SET_FIELD(db.params, CORE_DB_DATA_DEST, DB_DEST_XCM);
 336         SET_FIELD(db.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
 337         SET_FIELD(db.params, CORE_DB_DATA_AGG_VAL_SEL, DQ_XCM_CORE_SPQ_PROD_CMD);
 338         db.agg_flags = DQ_XCM_CORE_DQ_CF_CMD;
 339         db.spq_prod = OSAL_CPU_TO_LE16(ecore_chain_get_prod_idx(p_chain));
 340
 341         /* make sure the SPQE is updated before the doorbell */
 342         OSAL_WMB(p_hwfn->p_dev);
 343
 344         DOORBELL(p_hwfn, DB_ADDR(p_spq->cid, DQ_DEMS_LEGACY), *(u32 *)&db);
 345
 346         /* make sure doorbell is rang */
 347         OSAL_WMB(p_hwfn->p_dev);
 348
 349         DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
 350                    "Doorbelled [0x%08x, CID 0x%08x] with Flags: %02x agg_params: %02x, prod: %04x\n",
 351                    DB_ADDR(p_spq->cid, DQ_DEMS_LEGACY), p_spq->cid, db.params,
 352                    db.agg_flags, ecore_chain_get_prod_idx(p_chain));
 353
 354         return ECORE_SUCCESS;
 355 }
 356
 357 /***************************************************************************
 358  * Asynchronous events
 359  ***************************************************************************/
 360
 361 static enum _ecore_status_t
 362 ecore_async_event_completion(struct ecore_hwfn *p_hwfn,
 363                              struct event_ring_entry *p_eqe)
 364 {
 365         switch (p_eqe->protocol_id) {
 366 #ifdef CONFIG_ECORE_ROCE
 367         case PROTOCOLID_ROCE:
 368         {
 369                 ecore_roce_async_event(p_hwfn,
 370                                        p_eqe->opcode,
 371                                        &p_eqe->data.rdma_data);
 372                 return ECORE_SUCCESS;
 373         }
 374 #ifdef CONFIG_ECORE_IWARP
 375         case PROTOCOLID_IWARP:
 376         {
 377                 ecore_iwarp_async_event(p_hwfn,
 378                                         p_eqe->opcode,
 379                                         &p_eqe->data.rdma_data.async_handle,
 380                                         p_eqe->fw_return_code);
 381                 return ECORE_SUCCESS;
 382         }
 383 #endif
 384 #endif
 385         case PROTOCOLID_COMMON:
 386                 return ecore_sriov_eqe_event(p_hwfn,
 387                                              p_eqe->opcode,
 388                                              p_eqe->echo,
 389                                              &p_eqe->data);
 390 #ifdef CONFIG_ECORE_ISCSI
 391         case PROTOCOLID_ISCSI:
 392                 if (p_hwfn->p_iscsi_info->event_cb != OSAL_NULL) {
 393                         struct ecore_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
 394
 395                         return p_iscsi->event_cb(p_iscsi->event_context,
 396                                                  p_eqe->opcode, &p_eqe->data);
 397                 } else {
 398                         DP_NOTICE(p_hwfn,
 399                                  false, "iSCSI async completion is not set\n");
 400                         return ECORE_NOTIMPL;
 401                 }
 402 #endif
 403         default:
 404                 DP_NOTICE(p_hwfn,
 405                          true, "Unknown Async completion for protocol: %d\n",
 406                          p_eqe->protocol_id);
 407                 return ECORE_INVAL;
 408         }
 409 }
 410
 411 /***************************************************************************
 412  * EQ API
 413  ***************************************************************************/
 414 void ecore_eq_prod_update(struct ecore_hwfn     *p_hwfn,
 415                           u16                   prod)
 416 {
 417         u32 addr = GTT_BAR0_MAP_REG_USDM_RAM +
 418                 USTORM_EQE_CONS_OFFSET(p_hwfn->rel_pf_id);
 419
 420         REG_WR16(p_hwfn, addr, prod);
 421
 422         /* keep prod updates ordered */
 423         OSAL_MMIOWB(p_hwfn->p_dev);
 424 }
 425
 426 enum _ecore_status_t ecore_eq_completion(struct ecore_hwfn      *p_hwfn,
 427                                          void                   *cookie)
 428
 429 {
 430         struct ecore_eq    *p_eq    = cookie;
 431         struct ecore_chain *p_chain = &p_eq->chain;
 432         enum _ecore_status_t rc = 0;
 433
 434         /* take a snapshot of the FW consumer */
 435         u16 fw_cons_idx = OSAL_LE16_TO_CPU(*p_eq->p_fw_cons);
 436
 437         DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "fw_cons_idx %x\n", fw_cons_idx);
 438
 439         /* Need to guarantee the fw_cons index we use points to a usuable
 440          * element (to comply with our chain), so our macros would comply
 441          */
 442         if ((fw_cons_idx & ecore_chain_get_usable_per_page(p_chain)) ==
 443             ecore_chain_get_usable_per_page(p_chain)) {
 444                 fw_cons_idx += ecore_chain_get_unusable_per_page(p_chain);
 445         }
 446
 447         /* Complete current segment of eq entries */
 448         while (fw_cons_idx != ecore_chain_get_cons_idx(p_chain)) {
 449                 struct event_ring_entry *p_eqe = ecore_chain_consume(p_chain);
 450                 if (!p_eqe) {
 451                         rc = ECORE_INVAL;
 452                         break;
 453                 }
 454
 455                 DP_VERBOSE(p_hwfn,
 456                            ECORE_MSG_SPQ,
 457                            "op %x prot %x res0 %x echo %x fwret %x flags %x\n",
 458                            p_eqe->opcode,            /* Event Opcode */
 459                            p_eqe->protocol_id,       /* Event Protocol ID */
 460                            p_eqe->reserved0,         /* Reserved */
 461                            OSAL_LE16_TO_CPU(p_eqe->echo),/* Echo value from
 462                                                         ramrod data on the host
 463                                                       */
 464                            p_eqe->fw_return_code,    /* FW return code for SP
 465                                                         ramrods
 466                                                       */
 467                            p_eqe->flags);
 468 #ifndef REMOVE_DBG
 469                 if (p_eqe->protocol_id == PROTOCOLID_ISCSI)
 470                         ecore_iscsi_eq_dump(p_hwfn, p_eqe);
 471 #endif
 472
 473                 if (GET_FIELD(p_eqe->flags, EVENT_RING_ENTRY_ASYNC)) {
 474                         if (ecore_async_event_completion(p_hwfn, p_eqe))
 475                                 rc = ECORE_INVAL;
 476                 } else if (ecore_spq_completion(p_hwfn,
 477                                                 p_eqe->echo,
 478                                                 p_eqe->fw_return_code,
 479                                                 &p_eqe->data)) {
 480                         rc = ECORE_INVAL;
 481                 }
 482
 483                 ecore_chain_recycle_consumed(p_chain);
 484         }
 485
 486         ecore_eq_prod_update(p_hwfn, ecore_chain_get_prod_idx(p_chain));
 487
 488         return rc;
 489 }
 490
 491 enum _ecore_status_t ecore_eq_alloc(struct ecore_hwfn *p_hwfn, u16 num_elem)
 492 {
 493         struct ecore_eq *p_eq;
 494
 495         /* Allocate EQ struct */
 496         p_eq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_eq));
 497         if (!p_eq) {
 498                 DP_NOTICE(p_hwfn, true,
 499                           "Failed to allocate `struct ecore_eq'\n");
 500                 return ECORE_NOMEM;
 501         }
 502
 503         /* Allocate and initialize EQ chain*/
 504         if (ecore_chain_alloc(p_hwfn->p_dev,
 505                               ECORE_CHAIN_USE_TO_PRODUCE,
 506                               ECORE_CHAIN_MODE_PBL,
 507                               ECORE_CHAIN_CNT_TYPE_U16,
 508                               num_elem,
 509                               sizeof(union event_ring_element),
 510                               &p_eq->chain, OSAL_NULL) != ECORE_SUCCESS) {
 511                 DP_NOTICE(p_hwfn, true, "Failed to allocate eq chain\n");
 512                 goto eq_allocate_fail;
 513         }
 514
 515         /* register EQ completion on the SP SB */
 516         ecore_int_register_cb(p_hwfn, ecore_eq_completion,
 517                               p_eq, &p_eq->eq_sb_index, &p_eq->p_fw_cons);
 518
 519         p_hwfn->p_eq = p_eq;
 520         return ECORE_SUCCESS;
 521
 522 eq_allocate_fail:
 523         OSAL_FREE(p_hwfn->p_dev, p_eq);
 524         return ECORE_NOMEM;
 525 }
 526
 527 void ecore_eq_setup(struct ecore_hwfn *p_hwfn)
 528 {
 529         ecore_chain_reset(&p_hwfn->p_eq->chain);
 530 }
 531
 532 void ecore_eq_free(struct ecore_hwfn *p_hwfn)
 533 {
 534         if (!p_hwfn->p_eq)
 535                 return;
 536
 537         ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_eq->chain);
 538
 539         OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_eq);
 540         p_hwfn->p_eq = OSAL_NULL;
 541 }
 542
 543 /***************************************************************************
 544 * CQE API - manipulate EQ functionallity
 545 ***************************************************************************/
 546 static enum _ecore_status_t ecore_cqe_completion(struct ecore_hwfn *p_hwfn,
 547                                                  struct eth_slow_path_rx_cqe *cqe,
 548                                                  enum protocol_type protocol)
 549 {
 550         if (IS_VF(p_hwfn->p_dev))
 551                 return OSAL_VF_CQE_COMPLETION(p_hwfn, cqe, protocol);
 552
 553         /* @@@tmp - it's possible we'll eventually want to handle some
 554          * actual commands that can arrive here, but for now this is only
 555          * used to complete the ramrod using the echo value on the cqe
 556          */
 557         return ecore_spq_completion(p_hwfn, cqe->echo, 0, OSAL_NULL);
 558 }
 559
 560 enum _ecore_status_t ecore_eth_cqe_completion(struct ecore_hwfn *p_hwfn,
 561                                               struct eth_slow_path_rx_cqe *cqe)
 562 {
 563         enum _ecore_status_t rc;
 564
 565         rc = ecore_cqe_completion(p_hwfn, cqe, PROTOCOLID_ETH);
 566         if (rc) {
 567                 DP_NOTICE(p_hwfn, true,
 568                           "Failed to handle RXQ CQE [cmd 0x%02x]\n",
 569                           cqe->ramrod_cmd_id);
 570         }
 571
 572         return rc;
 573 }
 574
 575 /***************************************************************************
 576  * Slow hwfn Queue (spq)
 577  ***************************************************************************/
 578 void ecore_spq_setup(struct ecore_hwfn *p_hwfn)
 579 {
 580         struct ecore_spq *p_spq = p_hwfn->p_spq;
 581         struct ecore_spq_entry *p_virt = OSAL_NULL;
 582         dma_addr_t p_phys = 0;
 583         u32 i, capacity;
 584
 585         OSAL_LIST_INIT(&p_spq->pending);
 586         OSAL_LIST_INIT(&p_spq->completion_pending);
 587         OSAL_LIST_INIT(&p_spq->free_pool);
 588         OSAL_LIST_INIT(&p_spq->unlimited_pending);
 589         OSAL_SPIN_LOCK_INIT(&p_spq->lock);
 590
 591         /* SPQ empty pool */
 592         p_phys = p_spq->p_phys + OFFSETOF(struct ecore_spq_entry, ramrod);
 593         p_virt = p_spq->p_virt;
 594
 595         capacity = ecore_chain_get_capacity(&p_spq->chain);
 596         for (i = 0; i < capacity; i++) {
 597                 DMA_REGPAIR_LE(p_virt->elem.data_ptr, p_phys);
 598
 599                 OSAL_LIST_PUSH_TAIL(&p_virt->list, &p_spq->free_pool);
 600
 601                 p_virt++;
 602                 p_phys += sizeof(struct ecore_spq_entry);
 603         }
 604
 605         /* Statistics */
 606         p_spq->normal_count             = 0;
 607         p_spq->comp_count               = 0;
 608         p_spq->comp_sent_count          = 0;
 609         p_spq->unlimited_pending_count  = 0;
 610
 611         OSAL_MEM_ZERO(p_spq->p_comp_bitmap,
 612                       SPQ_COMP_BMAP_SIZE * sizeof(unsigned long));
 613         p_spq->comp_bitmap_idx = 0;
 614
 615         /* SPQ cid, cannot fail */
 616         ecore_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_spq->cid);
 617         ecore_spq_hw_initialize(p_hwfn, p_spq);
 618
 619         /* reset the chain itself */
 620         ecore_chain_reset(&p_spq->chain);
 621 }
 622
 623 enum _ecore_status_t ecore_spq_alloc(struct ecore_hwfn *p_hwfn)
 624 {
 625         struct ecore_spq_entry *p_virt = OSAL_NULL;
 626         struct ecore_spq *p_spq = OSAL_NULL;
 627         dma_addr_t p_phys = 0;
 628         u32 capacity;
 629
 630         /* SPQ struct */
 631         p_spq =
 632             OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(struct ecore_spq));
 633         if (!p_spq) {
 634                 DP_NOTICE(p_hwfn, true, "Failed to allocate `struct ecore_spq'\n");
 635                 return ECORE_NOMEM;
 636         }
 637
 638         /* SPQ ring  */
 639         if (ecore_chain_alloc(p_hwfn->p_dev,
 640                               ECORE_CHAIN_USE_TO_PRODUCE,
 641                               ECORE_CHAIN_MODE_SINGLE,
 642                               ECORE_CHAIN_CNT_TYPE_U16,
 643                               0, /* N/A when the mode is SINGLE */
 644                               sizeof(struct slow_path_element),
 645                               &p_spq->chain, OSAL_NULL)) {
 646                 DP_NOTICE(p_hwfn, true, "Failed to allocate spq chain\n");
 647                 goto spq_allocate_fail;
 648         }
 649
 650         /* allocate and fill the SPQ elements (incl. ramrod data list) */
 651         capacity = ecore_chain_get_capacity(&p_spq->chain);
 652         p_virt = OSAL_DMA_ALLOC_COHERENT(p_hwfn->p_dev, &p_phys,
 653                                          capacity *
 654                                          sizeof(struct ecore_spq_entry));
 655         if (!p_virt) {
 656                 goto spq_allocate_fail;
 657         }
 658
 659         p_spq->p_virt = p_virt;
 660         p_spq->p_phys = p_phys;
 661
 662 #ifdef CONFIG_ECORE_LOCK_ALLOC
 663         OSAL_SPIN_LOCK_ALLOC(p_hwfn, &p_spq->lock);
 664 #endif
 665
 666         p_hwfn->p_spq = p_spq;
 667         return ECORE_SUCCESS;
 668
 669 spq_allocate_fail:
 670         ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
 671         OSAL_FREE(p_hwfn->p_dev, p_spq);
 672         return ECORE_NOMEM;
 673 }
 674
 675 void ecore_spq_free(struct ecore_hwfn *p_hwfn)
 676 {
 677         struct ecore_spq *p_spq = p_hwfn->p_spq;
 678         u32 capacity;
 679
 680         if (!p_spq)
 681                 return;
 682
 683         if (p_spq->p_virt) {
 684                 capacity = ecore_chain_get_capacity(&p_spq->chain);
 685                 OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev,
 686                                        p_spq->p_virt,
 687                                        p_spq->p_phys,
 688                                        capacity *
 689                                        sizeof(struct ecore_spq_entry));
 690         }
 691
 692         ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
 693 #ifdef CONFIG_ECORE_LOCK_ALLOC
 694         OSAL_SPIN_LOCK_DEALLOC(&p_spq->lock);
 695 #endif
 696
 697         OSAL_FREE(p_hwfn->p_dev, p_spq);
 698         p_hwfn->p_spq = OSAL_NULL;
 699 }
 700
 701 enum _ecore_status_t ecore_spq_get_entry(struct ecore_hwfn *p_hwfn,
 702                                          struct ecore_spq_entry **pp_ent)
 703 {
 704         struct ecore_spq *p_spq = p_hwfn->p_spq;
 705         struct ecore_spq_entry *p_ent = OSAL_NULL;
 706         enum _ecore_status_t rc = ECORE_SUCCESS;
 707
 708         OSAL_SPIN_LOCK(&p_spq->lock);
 709
 710         if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
 711
 712                 p_ent = OSAL_ZALLOC(p_hwfn->p_dev, GFP_ATOMIC, sizeof(*p_ent));
 713                 if (!p_ent) {
 714                         DP_NOTICE(p_hwfn, true, "Failed to allocate an SPQ entry for a pending ramrod\n");
 715                         rc = ECORE_NOMEM;
 716                         goto out_unlock;
 717                 }
 718                 p_ent->queue = &p_spq->unlimited_pending;
 719         } else {
 720                 p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
 721                                               struct ecore_spq_entry,
 722                                               list);
 723                 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->free_pool);
 724                 p_ent->queue = &p_spq->pending;
 725         }
 726
 727         *pp_ent = p_ent;
 728
 729 out_unlock:
 730         OSAL_SPIN_UNLOCK(&p_spq->lock);
 731         return rc;
 732 }
 733
 734 /* Locked variant; Should be called while the SPQ lock is taken */
 735 static void __ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
 736                               struct ecore_spq_entry *p_ent)
 737 {
 738         OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_hwfn->p_spq->free_pool);
 739 }
 740
 741 void ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
 742                             struct ecore_spq_entry *p_ent)
 743 {
 744         OSAL_SPIN_LOCK(&p_hwfn->p_spq->lock);
 745         __ecore_spq_return_entry(p_hwfn, p_ent);
 746         OSAL_SPIN_UNLOCK(&p_hwfn->p_spq->lock);
 747 }
 748
 749 /**
 750  * @brief ecore_spq_add_entry - adds a new entry to the pending
 751  *        list. Should be used while lock is being held.
 752  *
 753  * Addes an entry to the pending list is there is room (en empty
 754  * element is avaliable in the free_pool), or else places the
 755  * entry in the unlimited_pending pool.
 756  *
 757  * @param p_hwfn
 758  * @param p_ent
 759  * @param priority
 760  *
 761  * @return enum _ecore_status_t
 762  */
 763 static enum _ecore_status_t ecore_spq_add_entry(struct ecore_hwfn *p_hwfn,
 764                                                 struct ecore_spq_entry *p_ent,
 765                                                 enum spq_priority priority)
 766 {
 767         struct ecore_spq        *p_spq  = p_hwfn->p_spq;
 768
 769         if (p_ent->queue == &p_spq->unlimited_pending) {
 770                 if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
 771
 772                         OSAL_LIST_PUSH_TAIL(&p_ent->list,
 773                                             &p_spq->unlimited_pending);
 774                         p_spq->unlimited_pending_count++;
 775
 776                         return ECORE_SUCCESS;
 777
 778                 } else {
 779                         struct ecore_spq_entry *p_en2;
 780
 781                         p_en2 = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
 782                                                      struct ecore_spq_entry,
 783                                                      list);
 784                         OSAL_LIST_REMOVE_ENTRY(&p_en2->list, &p_spq->free_pool);
 785
 786                         /* Copy the ring element physical pointer to the new
 787                          * entry, since we are about to override the entire ring
 788                          * entry and don't want to lose the pointer.
 789                          */
 790                         p_ent->elem.data_ptr = p_en2->elem.data_ptr;
 791
 792                         *p_en2 = *p_ent;
 793
 794                         /* EBLOCK responsible to free the allocated p_ent */
 795                         if (p_ent->comp_mode != ECORE_SPQ_MODE_EBLOCK)
 796                                 OSAL_FREE(p_hwfn->p_dev, p_ent);
 797
 798                         p_ent = p_en2;
 799                 }
 800         }
 801
 802         /* entry is to be placed in 'pending' queue */
 803         switch (priority) {
 804         case ECORE_SPQ_PRIORITY_NORMAL:
 805                 OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->pending);
 806                 p_spq->normal_count++;
 807                 break;
 808         case ECORE_SPQ_PRIORITY_HIGH:
 809                 OSAL_LIST_PUSH_HEAD(&p_ent->list, &p_spq->pending);
 810                 p_spq->high_count++;
 811                 break;
 812         default:
 813                 return ECORE_INVAL;
 814         }
 815
 816         return ECORE_SUCCESS;
 817 }
 818
 819 /***************************************************************************
 820  * Accessor
 821  ***************************************************************************/
 822
 823 u32 ecore_spq_get_cid(struct ecore_hwfn *p_hwfn)
 824 {
 825         if (!p_hwfn->p_spq) {
 826                 return 0xffffffff;      /* illegal */
 827         }
 828         return p_hwfn->p_spq->cid;
 829 }
 830
 831 /***************************************************************************
 832  * Posting new Ramrods
 833  ***************************************************************************/
 834
 835 static enum _ecore_status_t ecore_spq_post_list(struct ecore_hwfn *p_hwfn,
 836                                                 osal_list_t       *head,
 837                                                 u32               keep_reserve)
 838 {
 839         struct ecore_spq        *p_spq = p_hwfn->p_spq;
 840         enum _ecore_status_t    rc;
 841
 842         /* TODO - implementation might be wasteful; will always keep room
 843          * for an additional high priority ramrod (even if one is already
 844          * pending FW)
 845          */
 846         while (ecore_chain_get_elem_left(&p_spq->chain) > keep_reserve &&
 847                !OSAL_LIST_IS_EMPTY(head)) {
 848                 struct ecore_spq_entry  *p_ent =
 849                     OSAL_LIST_FIRST_ENTRY(head, struct ecore_spq_entry, list);
 850                 if (p_ent != OSAL_NULL) {
 851 #if defined(_NTDDK_)
 852 #pragma warning(suppress : 6011 28182)
 853 #endif
 854                         OSAL_LIST_REMOVE_ENTRY(&p_ent->list, head);
 855                         OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->completion_pending);
 856                         p_spq->comp_sent_count++;
 857
 858                         rc = ecore_spq_hw_post(p_hwfn, p_spq, p_ent);
 859                         if (rc) {
 860                                 OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
 861                                                                         &p_spq->completion_pending);
 862                                 __ecore_spq_return_entry(p_hwfn, p_ent);
 863                                 return rc;
 864                         }
 865                 }
 866         }
 867
 868         return ECORE_SUCCESS;
 869 }
 870
 871 static enum _ecore_status_t ecore_spq_pend_post(struct ecore_hwfn *p_hwfn)
 872 {
 873         struct ecore_spq *p_spq = p_hwfn->p_spq;
 874         struct ecore_spq_entry *p_ent = OSAL_NULL;
 875
 876         while (!OSAL_LIST_IS_EMPTY(&p_spq->free_pool))
 877         {
 878                 if (OSAL_LIST_IS_EMPTY(&p_spq->unlimited_pending))
 879                         break;
 880
 881                 p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->unlimited_pending,
 882                                               struct ecore_spq_entry,
 883                                               list);
 884                 if (!p_ent)
 885                         return ECORE_INVAL;
 886
 887 #if defined(_NTDDK_)
 888 #pragma warning(suppress : 6011)
 889 #endif
 890                 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->unlimited_pending);
 891
 892                 ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
 893         }
 894
 895         return ecore_spq_post_list(p_hwfn, &p_spq->pending,
 896                                    SPQ_HIGH_PRI_RESERVE_DEFAULT);
 897 }
 898
 899 enum _ecore_status_t ecore_spq_post(struct ecore_hwfn           *p_hwfn,
 900                                     struct ecore_spq_entry      *p_ent,
 901                                     u8                          *fw_return_code)
 902 {
 903         enum _ecore_status_t    rc = ECORE_SUCCESS;
 904         struct ecore_spq        *p_spq = p_hwfn ? p_hwfn->p_spq : OSAL_NULL;
 905         bool                    b_ret_ent = true;
 906
 907         if (!p_hwfn)
 908                 return ECORE_INVAL;
 909
 910         if (!p_ent) {
 911                 DP_NOTICE(p_hwfn, true, "Got a NULL pointer\n");
 912                 return ECORE_INVAL;
 913         }
 914
 915         if (p_hwfn->p_dev->recov_in_prog) {
 916                 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
 917                            "Recovery is in progress -> skip spq post [cmd %02x protocol %02x]\n",
 918                            p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id);
 919                 /* Return success to let the flows to be completed successfully
 920                  * w/o any error handling.
 921                  */
 922                 return ECORE_SUCCESS;
 923         }
 924
 925         OSAL_SPIN_LOCK(&p_spq->lock);
 926
 927         /* Complete the entry */
 928         rc = ecore_spq_fill_entry(p_hwfn, p_ent);
 929
 930         /* Check return value after LOCK is taken for cleaner error flow */
 931         if (rc)
 932                 goto spq_post_fail;
 933
 934         /* Add the request to the pending queue */
 935         rc = ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
 936         if (rc)
 937                 goto spq_post_fail;
 938
 939         rc = ecore_spq_pend_post(p_hwfn);
 940         if (rc) {
 941                 /* Since it's possible that pending failed for a different
 942                  * entry [although unlikely], the failed entry was already
 943                  * dealt with; No need to return it here.
 944                  */
 945                 b_ret_ent = false;
 946                 goto spq_post_fail;
 947         }
 948
 949         OSAL_SPIN_UNLOCK(&p_spq->lock);
 950
 951         if (p_ent->comp_mode == ECORE_SPQ_MODE_EBLOCK) {
 952                 /* For entries in ECORE BLOCK mode, the completion code cannot
 953                  * perform the necessary cleanup - if it did, we couldn't
 954                  * access p_ent here to see whether it's successful or not.
 955                  * Thus, after gaining the answer perform the cleanup here.
 956                  */
 957                 rc = ecore_spq_block(p_hwfn, p_ent, fw_return_code,
 958                                      p_ent->queue == &p_spq->unlimited_pending);
 959
 960                 if (p_ent->queue == &p_spq->unlimited_pending) {
 961                         /* This is an allocated p_ent which does not need to
 962                          * return to pool.
 963                          */
 964                         OSAL_FREE(p_hwfn->p_dev, p_ent);
 965
 966                         /* TBD: handle error flow and remove p_ent from
 967                          * completion pending
 968                          */
 969                         return rc;
 970                 }
 971
 972                 if (rc)
 973                         goto spq_post_fail2;
 974
 975                 /* return to pool */
 976                 ecore_spq_return_entry(p_hwfn, p_ent);
 977         }
 978         return rc;
 979
 980 spq_post_fail2:
 981         OSAL_SPIN_LOCK(&p_spq->lock);
 982         OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->completion_pending);
 983         ecore_chain_return_produced(&p_spq->chain);
 984
 985 spq_post_fail:
 986         /* return to the free pool */
 987         if (b_ret_ent)
 988                 __ecore_spq_return_entry(p_hwfn, p_ent);
 989         OSAL_SPIN_UNLOCK(&p_spq->lock);
 990
 991         return rc;
 992 }
 993
 994 enum _ecore_status_t ecore_spq_completion(struct ecore_hwfn *p_hwfn,
 995                                           __le16 echo,
 996                                           u8 fw_return_code,
 997                                           union event_ring_data *p_data)
 998 {
 999         struct ecore_spq        *p_spq;
1000         struct ecore_spq_entry  *p_ent = OSAL_NULL;
1001         struct ecore_spq_entry  *tmp;
1002         struct ecore_spq_entry  *found = OSAL_NULL;
1003         enum _ecore_status_t    rc;
1004
1005         if (!p_hwfn) {
1006                 return ECORE_INVAL;
1007         }
1008
1009         p_spq = p_hwfn->p_spq;
1010         if (!p_spq) {
1011                 return ECORE_INVAL;
1012         }
1013
1014         OSAL_SPIN_LOCK(&p_spq->lock);
1015         OSAL_LIST_FOR_EACH_ENTRY_SAFE(p_ent,
1016                                       tmp,
1017                                       &p_spq->completion_pending,
1018                                       list,
1019                                       struct ecore_spq_entry) {
1020
1021                 if (p_ent->elem.hdr.echo == echo) {
1022                         OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
1023                                                &p_spq->completion_pending);
1024
1025                         /* Avoid overriding of SPQ entries when getting
1026                          * out-of-order completions, by marking the completions
1027                          * in a bitmap and increasing the chain consumer only
1028                          * for the first successive completed entries.
1029                          */
1030                         SPQ_COMP_BMAP_SET_BIT(p_spq, echo);
1031                         while (SPQ_COMP_BMAP_TEST_BIT(p_spq,
1032                                                       p_spq->comp_bitmap_idx)) {
1033                                 SPQ_COMP_BMAP_CLEAR_BIT(p_spq,
1034                                                         p_spq->comp_bitmap_idx);
1035                                 p_spq->comp_bitmap_idx++;
1036                                 ecore_chain_return_produced(&p_spq->chain);
1037                         }
1038
1039                         p_spq->comp_count++;
1040                         found = p_ent;
1041                         break;
1042                 }
1043
1044                 /* This is debug and should be relatively uncommon - depends
1045                  * on scenarios which have mutliple per-PF sent ramrods.
1046                  */
1047                 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
1048                            "Got completion for echo %04x - doesn't match echo %04x in completion pending list\n",
1049                            OSAL_LE16_TO_CPU(echo),
1050                            OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
1051         }
1052
1053         /* Release lock before callback, as callback may post
1054          * an additional ramrod.
1055          */
1056         OSAL_SPIN_UNLOCK(&p_spq->lock);
1057
1058         if (!found) {
1059                 DP_NOTICE(p_hwfn, true,
1060                           "Failed to find an entry this EQE [echo %04x] completes\n",
1061                           OSAL_LE16_TO_CPU(echo));
1062                 return ECORE_EXISTS;
1063         }
1064
1065         DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
1066                    "Complete EQE [echo %04x]: func %p cookie %p)\n",
1067                    OSAL_LE16_TO_CPU(echo),
1068                    p_ent->comp_cb.function, p_ent->comp_cb.cookie);
1069         if (found->comp_cb.function)
1070                 found->comp_cb.function(p_hwfn, found->comp_cb.cookie, p_data,
1071                                         fw_return_code);
1072         else
1073                 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "Got a completion without a callback function\n");
1074
1075         if ((found->comp_mode != ECORE_SPQ_MODE_EBLOCK) ||
1076             (found->queue == &p_spq->unlimited_pending))
1077                 /* EBLOCK  is responsible for returning its own entry into the
1078                  * free list, unless it originally added the entry into the
1079                  * unlimited pending list.
1080                  */
1081                 ecore_spq_return_entry(p_hwfn, found);
1082
1083         /* Attempt to post pending requests */
1084         OSAL_SPIN_LOCK(&p_spq->lock);
1085         rc = ecore_spq_pend_post(p_hwfn);
1086         OSAL_SPIN_UNLOCK(&p_spq->lock);
1087
1088         return rc;
1089 }
1090
1091 enum _ecore_status_t ecore_consq_alloc(struct ecore_hwfn *p_hwfn)
1092 {
1093         struct ecore_consq *p_consq;
1094
1095         /* Allocate ConsQ struct */
1096         p_consq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_consq));
1097         if (!p_consq) {
1098                 DP_NOTICE(p_hwfn, true,
1099                           "Failed to allocate `struct ecore_consq'\n");
1100                 return ECORE_NOMEM;
1101         }
1102
1103         /* Allocate and initialize EQ chain*/
1104         if (ecore_chain_alloc(p_hwfn->p_dev,
1105                               ECORE_CHAIN_USE_TO_PRODUCE,
1106                               ECORE_CHAIN_MODE_PBL,
1107                               ECORE_CHAIN_CNT_TYPE_U16,
1108                               ECORE_CHAIN_PAGE_SIZE/0x80,
1109                               0x80,
1110                               &p_consq->chain, OSAL_NULL) != ECORE_SUCCESS) {
1111                 DP_NOTICE(p_hwfn, true, "Failed to allocate consq chain");
1112                 goto consq_allocate_fail;
1113         }
1114
1115         p_hwfn->p_consq = p_consq;
1116         return ECORE_SUCCESS;
1117
1118 consq_allocate_fail:
1119         OSAL_FREE(p_hwfn->p_dev, p_consq);
1120         return ECORE_NOMEM;
1121 }
1122
1123 void ecore_consq_setup(struct ecore_hwfn *p_hwfn)
1124 {
1125         ecore_chain_reset(&p_hwfn->p_consq->chain);
1126 }
1127
1128 void ecore_consq_free(struct ecore_hwfn *p_hwfn)
1129 {
1130         if (!p_hwfn->p_consq)
1131                 return;
1132
1133         ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_consq->chain);
1134
1135         OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_consq);
1136         p_hwfn->p_consq = OSAL_NULL;
1137 }