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