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