1 /******************************************************************* 2 * This file is part of the Emulex RoCE Device Driver for * 3 * RoCE (RDMA over Converged Ethernet) CNA Adapters. * 4 * Copyright (C) 2008-2012 Emulex. All rights reserved. * 5 * EMULEX and SLI are trademarks of Emulex. * 6 * www.emulex.com * 7 * * 8 * This program is free software; you can redistribute it and/or * 9 * modify it under the terms of version 2 of the GNU General * 10 * Public License as published by the Free Software Foundation. * 11 * This program is distributed in the hope that it will be useful. * 12 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 13 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 14 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 15 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 16 * TO BE LEGALLY INVALID. See the GNU General Public License for * 17 * more details, a copy of which can be found in the file COPYING * 18 * included with this package. * 19 * 20 * Contact Information: 21 * linux-drivers@emulex.com 22 * 23 * Emulex 24 * 3333 Susan Street 25 * Costa Mesa, CA 92626 26 *******************************************************************/ 27 28 #include <linux/sched.h> 29 #include <linux/interrupt.h> 30 #include <linux/log2.h> 31 #include <linux/dma-mapping.h> 32 33 #include <rdma/ib_verbs.h> 34 #include <rdma/ib_user_verbs.h> 35 36 #include "ocrdma.h" 37 #include "ocrdma_hw.h" 38 #include "ocrdma_verbs.h" 39 #include "ocrdma_ah.h" 40 41 enum mbx_status { 42 OCRDMA_MBX_STATUS_FAILED = 1, 43 OCRDMA_MBX_STATUS_ILLEGAL_FIELD = 3, 44 OCRDMA_MBX_STATUS_OOR = 100, 45 OCRDMA_MBX_STATUS_INVALID_PD = 101, 46 OCRDMA_MBX_STATUS_PD_INUSE = 102, 47 OCRDMA_MBX_STATUS_INVALID_CQ = 103, 48 OCRDMA_MBX_STATUS_INVALID_QP = 104, 49 OCRDMA_MBX_STATUS_INVALID_LKEY = 105, 50 OCRDMA_MBX_STATUS_ORD_EXCEEDS = 106, 51 OCRDMA_MBX_STATUS_IRD_EXCEEDS = 107, 52 OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS = 108, 53 OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS = 109, 54 OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS = 110, 55 OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS = 111, 56 OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS = 112, 57 OCRDMA_MBX_STATUS_INVALID_STATE_CHANGE = 113, 58 OCRDMA_MBX_STATUS_MW_BOUND = 114, 59 OCRDMA_MBX_STATUS_INVALID_VA = 115, 60 OCRDMA_MBX_STATUS_INVALID_LENGTH = 116, 61 OCRDMA_MBX_STATUS_INVALID_FBO = 117, 62 OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS = 118, 63 OCRDMA_MBX_STATUS_INVALID_PBE_SIZE = 119, 64 OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY = 120, 65 OCRDMA_MBX_STATUS_INVALID_PBL_SHIFT = 121, 66 OCRDMA_MBX_STATUS_INVALID_SRQ_ID = 129, 67 OCRDMA_MBX_STATUS_SRQ_ERROR = 133, 68 OCRDMA_MBX_STATUS_RQE_EXCEEDS = 134, 69 OCRDMA_MBX_STATUS_MTU_EXCEEDS = 135, 70 OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS = 136, 71 OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS = 137, 72 OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS = 138, 73 OCRDMA_MBX_STATUS_QP_BOUND = 130, 74 OCRDMA_MBX_STATUS_INVALID_CHANGE = 139, 75 OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP = 140, 76 OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER = 141, 77 OCRDMA_MBX_STATUS_MW_STILL_BOUND = 142, 78 OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID = 143, 79 OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS = 144 80 }; 81 82 enum additional_status { 83 OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES = 22 84 }; 85 86 enum cqe_status { 87 OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES = 1, 88 OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER = 2, 89 OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES = 3, 90 OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING = 4, 91 OCRDMA_MBX_CQE_STATUS_DMA_FAILED = 5 92 }; 93 94 static inline void *ocrdma_get_eqe(struct ocrdma_eq *eq) 95 { 96 return eq->q.va + (eq->q.tail * sizeof(struct ocrdma_eqe)); 97 } 98 99 static inline void ocrdma_eq_inc_tail(struct ocrdma_eq *eq) 100 { 101 eq->q.tail = (eq->q.tail + 1) & (OCRDMA_EQ_LEN - 1); 102 } 103 104 static inline void *ocrdma_get_mcqe(struct ocrdma_dev *dev) 105 { 106 struct ocrdma_mcqe *cqe = (struct ocrdma_mcqe *) 107 (dev->mq.cq.va + (dev->mq.cq.tail * sizeof(struct ocrdma_mcqe))); 108 109 if (!(le32_to_cpu(cqe->valid_ae_cmpl_cons) & OCRDMA_MCQE_VALID_MASK)) 110 return NULL; 111 return cqe; 112 } 113 114 static inline void ocrdma_mcq_inc_tail(struct ocrdma_dev *dev) 115 { 116 dev->mq.cq.tail = (dev->mq.cq.tail + 1) & (OCRDMA_MQ_CQ_LEN - 1); 117 } 118 119 static inline struct ocrdma_mqe *ocrdma_get_mqe(struct ocrdma_dev *dev) 120 { 121 return dev->mq.sq.va + (dev->mq.sq.head * sizeof(struct ocrdma_mqe)); 122 } 123 124 static inline void ocrdma_mq_inc_head(struct ocrdma_dev *dev) 125 { 126 dev->mq.sq.head = (dev->mq.sq.head + 1) & (OCRDMA_MQ_LEN - 1); 127 } 128 129 static inline void *ocrdma_get_mqe_rsp(struct ocrdma_dev *dev) 130 { 131 return dev->mq.sq.va + (dev->mqe_ctx.tag * sizeof(struct ocrdma_mqe)); 132 } 133 134 enum ib_qp_state get_ibqp_state(enum ocrdma_qp_state qps) 135 { 136 switch (qps) { 137 case OCRDMA_QPS_RST: 138 return IB_QPS_RESET; 139 case OCRDMA_QPS_INIT: 140 return IB_QPS_INIT; 141 case OCRDMA_QPS_RTR: 142 return IB_QPS_RTR; 143 case OCRDMA_QPS_RTS: 144 return IB_QPS_RTS; 145 case OCRDMA_QPS_SQD: 146 case OCRDMA_QPS_SQ_DRAINING: 147 return IB_QPS_SQD; 148 case OCRDMA_QPS_SQE: 149 return IB_QPS_SQE; 150 case OCRDMA_QPS_ERR: 151 return IB_QPS_ERR; 152 } 153 return IB_QPS_ERR; 154 } 155 156 static enum ocrdma_qp_state get_ocrdma_qp_state(enum ib_qp_state qps) 157 { 158 switch (qps) { 159 case IB_QPS_RESET: 160 return OCRDMA_QPS_RST; 161 case IB_QPS_INIT: 162 return OCRDMA_QPS_INIT; 163 case IB_QPS_RTR: 164 return OCRDMA_QPS_RTR; 165 case IB_QPS_RTS: 166 return OCRDMA_QPS_RTS; 167 case IB_QPS_SQD: 168 return OCRDMA_QPS_SQD; 169 case IB_QPS_SQE: 170 return OCRDMA_QPS_SQE; 171 case IB_QPS_ERR: 172 return OCRDMA_QPS_ERR; 173 } 174 return OCRDMA_QPS_ERR; 175 } 176 177 static int ocrdma_get_mbx_errno(u32 status) 178 { 179 int err_num; 180 u8 mbox_status = (status & OCRDMA_MBX_RSP_STATUS_MASK) >> 181 OCRDMA_MBX_RSP_STATUS_SHIFT; 182 u8 add_status = (status & OCRDMA_MBX_RSP_ASTATUS_MASK) >> 183 OCRDMA_MBX_RSP_ASTATUS_SHIFT; 184 185 switch (mbox_status) { 186 case OCRDMA_MBX_STATUS_OOR: 187 case OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS: 188 err_num = -EAGAIN; 189 break; 190 191 case OCRDMA_MBX_STATUS_INVALID_PD: 192 case OCRDMA_MBX_STATUS_INVALID_CQ: 193 case OCRDMA_MBX_STATUS_INVALID_SRQ_ID: 194 case OCRDMA_MBX_STATUS_INVALID_QP: 195 case OCRDMA_MBX_STATUS_INVALID_CHANGE: 196 case OCRDMA_MBX_STATUS_MTU_EXCEEDS: 197 case OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER: 198 case OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID: 199 case OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS: 200 case OCRDMA_MBX_STATUS_ILLEGAL_FIELD: 201 case OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY: 202 case OCRDMA_MBX_STATUS_INVALID_LKEY: 203 case OCRDMA_MBX_STATUS_INVALID_VA: 204 case OCRDMA_MBX_STATUS_INVALID_LENGTH: 205 case OCRDMA_MBX_STATUS_INVALID_FBO: 206 case OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS: 207 case OCRDMA_MBX_STATUS_INVALID_PBE_SIZE: 208 case OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP: 209 case OCRDMA_MBX_STATUS_SRQ_ERROR: 210 case OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS: 211 err_num = -EINVAL; 212 break; 213 214 case OCRDMA_MBX_STATUS_PD_INUSE: 215 case OCRDMA_MBX_STATUS_QP_BOUND: 216 case OCRDMA_MBX_STATUS_MW_STILL_BOUND: 217 case OCRDMA_MBX_STATUS_MW_BOUND: 218 err_num = -EBUSY; 219 break; 220 221 case OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS: 222 case OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS: 223 case OCRDMA_MBX_STATUS_RQE_EXCEEDS: 224 case OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS: 225 case OCRDMA_MBX_STATUS_ORD_EXCEEDS: 226 case OCRDMA_MBX_STATUS_IRD_EXCEEDS: 227 case OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS: 228 case OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS: 229 case OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS: 230 err_num = -ENOBUFS; 231 break; 232 233 case OCRDMA_MBX_STATUS_FAILED: 234 switch (add_status) { 235 case OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES: 236 err_num = -EAGAIN; 237 break; 238 } 239 default: 240 err_num = -EFAULT; 241 } 242 return err_num; 243 } 244 245 char *port_speed_string(struct ocrdma_dev *dev) 246 { 247 char *str = ""; 248 u16 speeds_supported; 249 250 speeds_supported = dev->phy.fixed_speeds_supported | 251 dev->phy.auto_speeds_supported; 252 if (speeds_supported & OCRDMA_PHY_SPEED_40GBPS) 253 str = "40Gbps "; 254 else if (speeds_supported & OCRDMA_PHY_SPEED_10GBPS) 255 str = "10Gbps "; 256 else if (speeds_supported & OCRDMA_PHY_SPEED_1GBPS) 257 str = "1Gbps "; 258 259 return str; 260 } 261 262 static int ocrdma_get_mbx_cqe_errno(u16 cqe_status) 263 { 264 int err_num = -EINVAL; 265 266 switch (cqe_status) { 267 case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES: 268 err_num = -EPERM; 269 break; 270 case OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER: 271 err_num = -EINVAL; 272 break; 273 case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES: 274 case OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING: 275 err_num = -EINVAL; 276 break; 277 case OCRDMA_MBX_CQE_STATUS_DMA_FAILED: 278 default: 279 err_num = -EINVAL; 280 break; 281 } 282 return err_num; 283 } 284 285 void ocrdma_ring_cq_db(struct ocrdma_dev *dev, u16 cq_id, bool armed, 286 bool solicited, u16 cqe_popped) 287 { 288 u32 val = cq_id & OCRDMA_DB_CQ_RING_ID_MASK; 289 290 val |= ((cq_id & OCRDMA_DB_CQ_RING_ID_EXT_MASK) << 291 OCRDMA_DB_CQ_RING_ID_EXT_MASK_SHIFT); 292 293 if (armed) 294 val |= (1 << OCRDMA_DB_CQ_REARM_SHIFT); 295 if (solicited) 296 val |= (1 << OCRDMA_DB_CQ_SOLICIT_SHIFT); 297 val |= (cqe_popped << OCRDMA_DB_CQ_NUM_POPPED_SHIFT); 298 iowrite32(val, dev->nic_info.db + OCRDMA_DB_CQ_OFFSET); 299 } 300 301 static void ocrdma_ring_mq_db(struct ocrdma_dev *dev) 302 { 303 u32 val = 0; 304 305 val |= dev->mq.sq.id & OCRDMA_MQ_ID_MASK; 306 val |= 1 << OCRDMA_MQ_NUM_MQE_SHIFT; 307 iowrite32(val, dev->nic_info.db + OCRDMA_DB_MQ_OFFSET); 308 } 309 310 static void ocrdma_ring_eq_db(struct ocrdma_dev *dev, u16 eq_id, 311 bool arm, bool clear_int, u16 num_eqe) 312 { 313 u32 val = 0; 314 315 val |= eq_id & OCRDMA_EQ_ID_MASK; 316 val |= ((eq_id & OCRDMA_EQ_ID_EXT_MASK) << OCRDMA_EQ_ID_EXT_MASK_SHIFT); 317 if (arm) 318 val |= (1 << OCRDMA_REARM_SHIFT); 319 if (clear_int) 320 val |= (1 << OCRDMA_EQ_CLR_SHIFT); 321 val |= (1 << OCRDMA_EQ_TYPE_SHIFT); 322 val |= (num_eqe << OCRDMA_NUM_EQE_SHIFT); 323 iowrite32(val, dev->nic_info.db + OCRDMA_DB_EQ_OFFSET); 324 } 325 326 static void ocrdma_init_mch(struct ocrdma_mbx_hdr *cmd_hdr, 327 u8 opcode, u8 subsys, u32 cmd_len) 328 { 329 cmd_hdr->subsys_op = (opcode | (subsys << OCRDMA_MCH_SUBSYS_SHIFT)); 330 cmd_hdr->timeout = 20; /* seconds */ 331 cmd_hdr->cmd_len = cmd_len - sizeof(struct ocrdma_mbx_hdr); 332 } 333 334 static void *ocrdma_init_emb_mqe(u8 opcode, u32 cmd_len) 335 { 336 struct ocrdma_mqe *mqe; 337 338 mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL); 339 if (!mqe) 340 return NULL; 341 mqe->hdr.spcl_sge_cnt_emb |= 342 (OCRDMA_MQE_EMBEDDED << OCRDMA_MQE_HDR_EMB_SHIFT) & 343 OCRDMA_MQE_HDR_EMB_MASK; 344 mqe->hdr.pyld_len = cmd_len - sizeof(struct ocrdma_mqe_hdr); 345 346 ocrdma_init_mch(&mqe->u.emb_req.mch, opcode, OCRDMA_SUBSYS_ROCE, 347 mqe->hdr.pyld_len); 348 return mqe; 349 } 350 351 static void ocrdma_free_q(struct ocrdma_dev *dev, struct ocrdma_queue_info *q) 352 { 353 dma_free_coherent(&dev->nic_info.pdev->dev, q->size, q->va, q->dma); 354 } 355 356 static int ocrdma_alloc_q(struct ocrdma_dev *dev, 357 struct ocrdma_queue_info *q, u16 len, u16 entry_size) 358 { 359 memset(q, 0, sizeof(*q)); 360 q->len = len; 361 q->entry_size = entry_size; 362 q->size = len * entry_size; 363 q->va = dma_alloc_coherent(&dev->nic_info.pdev->dev, q->size, 364 &q->dma, GFP_KERNEL); 365 if (!q->va) 366 return -ENOMEM; 367 memset(q->va, 0, q->size); 368 return 0; 369 } 370 371 static void ocrdma_build_q_pages(struct ocrdma_pa *q_pa, int cnt, 372 dma_addr_t host_pa, int hw_page_size) 373 { 374 int i; 375 376 for (i = 0; i < cnt; i++) { 377 q_pa[i].lo = (u32) (host_pa & 0xffffffff); 378 q_pa[i].hi = (u32) upper_32_bits(host_pa); 379 host_pa += hw_page_size; 380 } 381 } 382 383 static int ocrdma_mbx_delete_q(struct ocrdma_dev *dev, 384 struct ocrdma_queue_info *q, int queue_type) 385 { 386 u8 opcode = 0; 387 int status; 388 struct ocrdma_delete_q_req *cmd = dev->mbx_cmd; 389 390 switch (queue_type) { 391 case QTYPE_MCCQ: 392 opcode = OCRDMA_CMD_DELETE_MQ; 393 break; 394 case QTYPE_CQ: 395 opcode = OCRDMA_CMD_DELETE_CQ; 396 break; 397 case QTYPE_EQ: 398 opcode = OCRDMA_CMD_DELETE_EQ; 399 break; 400 default: 401 BUG(); 402 } 403 memset(cmd, 0, sizeof(*cmd)); 404 ocrdma_init_mch(&cmd->req, opcode, OCRDMA_SUBSYS_COMMON, sizeof(*cmd)); 405 cmd->id = q->id; 406 407 status = be_roce_mcc_cmd(dev->nic_info.netdev, 408 cmd, sizeof(*cmd), NULL, NULL); 409 if (!status) 410 q->created = false; 411 return status; 412 } 413 414 static int ocrdma_mbx_create_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq) 415 { 416 int status; 417 struct ocrdma_create_eq_req *cmd = dev->mbx_cmd; 418 struct ocrdma_create_eq_rsp *rsp = dev->mbx_cmd; 419 420 memset(cmd, 0, sizeof(*cmd)); 421 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_EQ, OCRDMA_SUBSYS_COMMON, 422 sizeof(*cmd)); 423 424 cmd->req.rsvd_version = 2; 425 cmd->num_pages = 4; 426 cmd->valid = OCRDMA_CREATE_EQ_VALID; 427 cmd->cnt = 4 << OCRDMA_CREATE_EQ_CNT_SHIFT; 428 429 ocrdma_build_q_pages(&cmd->pa[0], cmd->num_pages, eq->q.dma, 430 PAGE_SIZE_4K); 431 status = be_roce_mcc_cmd(dev->nic_info.netdev, cmd, sizeof(*cmd), NULL, 432 NULL); 433 if (!status) { 434 eq->q.id = rsp->vector_eqid & 0xffff; 435 eq->vector = (rsp->vector_eqid >> 16) & 0xffff; 436 eq->q.created = true; 437 } 438 return status; 439 } 440 441 static int ocrdma_create_eq(struct ocrdma_dev *dev, 442 struct ocrdma_eq *eq, u16 q_len) 443 { 444 int status; 445 446 status = ocrdma_alloc_q(dev, &eq->q, OCRDMA_EQ_LEN, 447 sizeof(struct ocrdma_eqe)); 448 if (status) 449 return status; 450 451 status = ocrdma_mbx_create_eq(dev, eq); 452 if (status) 453 goto mbx_err; 454 eq->dev = dev; 455 ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0); 456 457 return 0; 458 mbx_err: 459 ocrdma_free_q(dev, &eq->q); 460 return status; 461 } 462 463 int ocrdma_get_irq(struct ocrdma_dev *dev, struct ocrdma_eq *eq) 464 { 465 int irq; 466 467 if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX) 468 irq = dev->nic_info.pdev->irq; 469 else 470 irq = dev->nic_info.msix.vector_list[eq->vector]; 471 return irq; 472 } 473 474 static void _ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq) 475 { 476 if (eq->q.created) { 477 ocrdma_mbx_delete_q(dev, &eq->q, QTYPE_EQ); 478 ocrdma_free_q(dev, &eq->q); 479 } 480 } 481 482 static void ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq) 483 { 484 int irq; 485 486 /* disarm EQ so that interrupts are not generated 487 * during freeing and EQ delete is in progress. 488 */ 489 ocrdma_ring_eq_db(dev, eq->q.id, false, false, 0); 490 491 irq = ocrdma_get_irq(dev, eq); 492 free_irq(irq, eq); 493 _ocrdma_destroy_eq(dev, eq); 494 } 495 496 static void ocrdma_destroy_eqs(struct ocrdma_dev *dev) 497 { 498 int i; 499 500 for (i = 0; i < dev->eq_cnt; i++) 501 ocrdma_destroy_eq(dev, &dev->eq_tbl[i]); 502 } 503 504 static int ocrdma_mbx_mq_cq_create(struct ocrdma_dev *dev, 505 struct ocrdma_queue_info *cq, 506 struct ocrdma_queue_info *eq) 507 { 508 struct ocrdma_create_cq_cmd *cmd = dev->mbx_cmd; 509 struct ocrdma_create_cq_cmd_rsp *rsp = dev->mbx_cmd; 510 int status; 511 512 memset(cmd, 0, sizeof(*cmd)); 513 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_CQ, 514 OCRDMA_SUBSYS_COMMON, sizeof(*cmd)); 515 516 cmd->req.rsvd_version = OCRDMA_CREATE_CQ_VER2; 517 cmd->pgsz_pgcnt = (cq->size / OCRDMA_MIN_Q_PAGE_SIZE) << 518 OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT; 519 cmd->pgsz_pgcnt |= PAGES_4K_SPANNED(cq->va, cq->size); 520 521 cmd->ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS; 522 cmd->eqn = eq->id; 523 cmd->pdid_cqecnt = cq->size / sizeof(struct ocrdma_mcqe); 524 525 ocrdma_build_q_pages(&cmd->pa[0], cq->size / OCRDMA_MIN_Q_PAGE_SIZE, 526 cq->dma, PAGE_SIZE_4K); 527 status = be_roce_mcc_cmd(dev->nic_info.netdev, 528 cmd, sizeof(*cmd), NULL, NULL); 529 if (!status) { 530 cq->id = (u16) (rsp->cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK); 531 cq->created = true; 532 } 533 return status; 534 } 535 536 static u32 ocrdma_encoded_q_len(int q_len) 537 { 538 u32 len_encoded = fls(q_len); /* log2(len) + 1 */ 539 540 if (len_encoded == 16) 541 len_encoded = 0; 542 return len_encoded; 543 } 544 545 static int ocrdma_mbx_create_mq(struct ocrdma_dev *dev, 546 struct ocrdma_queue_info *mq, 547 struct ocrdma_queue_info *cq) 548 { 549 int num_pages, status; 550 struct ocrdma_create_mq_req *cmd = dev->mbx_cmd; 551 struct ocrdma_create_mq_rsp *rsp = dev->mbx_cmd; 552 struct ocrdma_pa *pa; 553 554 memset(cmd, 0, sizeof(*cmd)); 555 num_pages = PAGES_4K_SPANNED(mq->va, mq->size); 556 557 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ_EXT, 558 OCRDMA_SUBSYS_COMMON, sizeof(*cmd)); 559 cmd->req.rsvd_version = 1; 560 cmd->cqid_pages = num_pages; 561 cmd->cqid_pages |= (cq->id << OCRDMA_CREATE_MQ_CQ_ID_SHIFT); 562 cmd->async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID; 563 564 cmd->async_event_bitmap = BIT(OCRDMA_ASYNC_GRP5_EVE_CODE); 565 cmd->async_event_bitmap |= BIT(OCRDMA_ASYNC_RDMA_EVE_CODE); 566 567 cmd->async_cqid_ringsize = cq->id; 568 cmd->async_cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) << 569 OCRDMA_CREATE_MQ_RING_SIZE_SHIFT); 570 cmd->valid = OCRDMA_CREATE_MQ_VALID; 571 pa = &cmd->pa[0]; 572 573 ocrdma_build_q_pages(pa, num_pages, mq->dma, PAGE_SIZE_4K); 574 status = be_roce_mcc_cmd(dev->nic_info.netdev, 575 cmd, sizeof(*cmd), NULL, NULL); 576 if (!status) { 577 mq->id = rsp->id; 578 mq->created = true; 579 } 580 return status; 581 } 582 583 static int ocrdma_create_mq(struct ocrdma_dev *dev) 584 { 585 int status; 586 587 /* Alloc completion queue for Mailbox queue */ 588 status = ocrdma_alloc_q(dev, &dev->mq.cq, OCRDMA_MQ_CQ_LEN, 589 sizeof(struct ocrdma_mcqe)); 590 if (status) 591 goto alloc_err; 592 593 dev->eq_tbl[0].cq_cnt++; 594 status = ocrdma_mbx_mq_cq_create(dev, &dev->mq.cq, &dev->eq_tbl[0].q); 595 if (status) 596 goto mbx_cq_free; 597 598 memset(&dev->mqe_ctx, 0, sizeof(dev->mqe_ctx)); 599 init_waitqueue_head(&dev->mqe_ctx.cmd_wait); 600 mutex_init(&dev->mqe_ctx.lock); 601 602 /* Alloc Mailbox queue */ 603 status = ocrdma_alloc_q(dev, &dev->mq.sq, OCRDMA_MQ_LEN, 604 sizeof(struct ocrdma_mqe)); 605 if (status) 606 goto mbx_cq_destroy; 607 status = ocrdma_mbx_create_mq(dev, &dev->mq.sq, &dev->mq.cq); 608 if (status) 609 goto mbx_q_free; 610 ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, 0); 611 return 0; 612 613 mbx_q_free: 614 ocrdma_free_q(dev, &dev->mq.sq); 615 mbx_cq_destroy: 616 ocrdma_mbx_delete_q(dev, &dev->mq.cq, QTYPE_CQ); 617 mbx_cq_free: 618 ocrdma_free_q(dev, &dev->mq.cq); 619 alloc_err: 620 return status; 621 } 622 623 static void ocrdma_destroy_mq(struct ocrdma_dev *dev) 624 { 625 struct ocrdma_queue_info *mbxq, *cq; 626 627 /* mqe_ctx lock synchronizes with any other pending cmds. */ 628 mutex_lock(&dev->mqe_ctx.lock); 629 mbxq = &dev->mq.sq; 630 if (mbxq->created) { 631 ocrdma_mbx_delete_q(dev, mbxq, QTYPE_MCCQ); 632 ocrdma_free_q(dev, mbxq); 633 } 634 mutex_unlock(&dev->mqe_ctx.lock); 635 636 cq = &dev->mq.cq; 637 if (cq->created) { 638 ocrdma_mbx_delete_q(dev, cq, QTYPE_CQ); 639 ocrdma_free_q(dev, cq); 640 } 641 } 642 643 static void ocrdma_process_qpcat_error(struct ocrdma_dev *dev, 644 struct ocrdma_qp *qp) 645 { 646 enum ib_qp_state new_ib_qps = IB_QPS_ERR; 647 enum ib_qp_state old_ib_qps; 648 649 if (qp == NULL) 650 BUG(); 651 ocrdma_qp_state_change(qp, new_ib_qps, &old_ib_qps); 652 } 653 654 static void ocrdma_dispatch_ibevent(struct ocrdma_dev *dev, 655 struct ocrdma_ae_mcqe *cqe) 656 { 657 struct ocrdma_qp *qp = NULL; 658 struct ocrdma_cq *cq = NULL; 659 struct ib_event ib_evt; 660 int cq_event = 0; 661 int qp_event = 1; 662 int srq_event = 0; 663 int dev_event = 0; 664 int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >> 665 OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT; 666 667 if (cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPVALID) 668 qp = dev->qp_tbl[cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPID_MASK]; 669 if (cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQVALID) 670 cq = dev->cq_tbl[cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQID_MASK]; 671 672 memset(&ib_evt, 0, sizeof(ib_evt)); 673 674 ib_evt.device = &dev->ibdev; 675 676 switch (type) { 677 case OCRDMA_CQ_ERROR: 678 ib_evt.element.cq = &cq->ibcq; 679 ib_evt.event = IB_EVENT_CQ_ERR; 680 cq_event = 1; 681 qp_event = 0; 682 break; 683 case OCRDMA_CQ_OVERRUN_ERROR: 684 ib_evt.element.cq = &cq->ibcq; 685 ib_evt.event = IB_EVENT_CQ_ERR; 686 cq_event = 1; 687 qp_event = 0; 688 break; 689 case OCRDMA_CQ_QPCAT_ERROR: 690 ib_evt.element.qp = &qp->ibqp; 691 ib_evt.event = IB_EVENT_QP_FATAL; 692 ocrdma_process_qpcat_error(dev, qp); 693 break; 694 case OCRDMA_QP_ACCESS_ERROR: 695 ib_evt.element.qp = &qp->ibqp; 696 ib_evt.event = IB_EVENT_QP_ACCESS_ERR; 697 break; 698 case OCRDMA_QP_COMM_EST_EVENT: 699 ib_evt.element.qp = &qp->ibqp; 700 ib_evt.event = IB_EVENT_COMM_EST; 701 break; 702 case OCRDMA_SQ_DRAINED_EVENT: 703 ib_evt.element.qp = &qp->ibqp; 704 ib_evt.event = IB_EVENT_SQ_DRAINED; 705 break; 706 case OCRDMA_DEVICE_FATAL_EVENT: 707 ib_evt.element.port_num = 1; 708 ib_evt.event = IB_EVENT_DEVICE_FATAL; 709 qp_event = 0; 710 dev_event = 1; 711 break; 712 case OCRDMA_SRQCAT_ERROR: 713 ib_evt.element.srq = &qp->srq->ibsrq; 714 ib_evt.event = IB_EVENT_SRQ_ERR; 715 srq_event = 1; 716 qp_event = 0; 717 break; 718 case OCRDMA_SRQ_LIMIT_EVENT: 719 ib_evt.element.srq = &qp->srq->ibsrq; 720 ib_evt.event = IB_EVENT_SRQ_LIMIT_REACHED; 721 srq_event = 1; 722 qp_event = 0; 723 break; 724 case OCRDMA_QP_LAST_WQE_EVENT: 725 ib_evt.element.qp = &qp->ibqp; 726 ib_evt.event = IB_EVENT_QP_LAST_WQE_REACHED; 727 break; 728 default: 729 cq_event = 0; 730 qp_event = 0; 731 srq_event = 0; 732 dev_event = 0; 733 pr_err("%s() unknown type=0x%x\n", __func__, type); 734 break; 735 } 736 737 if (qp_event) { 738 if (qp->ibqp.event_handler) 739 qp->ibqp.event_handler(&ib_evt, qp->ibqp.qp_context); 740 } else if (cq_event) { 741 if (cq->ibcq.event_handler) 742 cq->ibcq.event_handler(&ib_evt, cq->ibcq.cq_context); 743 } else if (srq_event) { 744 if (qp->srq->ibsrq.event_handler) 745 qp->srq->ibsrq.event_handler(&ib_evt, 746 qp->srq->ibsrq. 747 srq_context); 748 } else if (dev_event) { 749 pr_err("%s: Fatal event received\n", dev->ibdev.name); 750 ib_dispatch_event(&ib_evt); 751 } 752 753 } 754 755 static void ocrdma_process_grp5_aync(struct ocrdma_dev *dev, 756 struct ocrdma_ae_mcqe *cqe) 757 { 758 struct ocrdma_ae_pvid_mcqe *evt; 759 int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >> 760 OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT; 761 762 switch (type) { 763 case OCRDMA_ASYNC_EVENT_PVID_STATE: 764 evt = (struct ocrdma_ae_pvid_mcqe *)cqe; 765 if ((evt->tag_enabled & OCRDMA_AE_PVID_MCQE_ENABLED_MASK) >> 766 OCRDMA_AE_PVID_MCQE_ENABLED_SHIFT) 767 dev->pvid = ((evt->tag_enabled & 768 OCRDMA_AE_PVID_MCQE_TAG_MASK) >> 769 OCRDMA_AE_PVID_MCQE_TAG_SHIFT); 770 break; 771 772 case OCRDMA_ASYNC_EVENT_COS_VALUE: 773 atomic_set(&dev->update_sl, 1); 774 break; 775 default: 776 /* Not interested evts. */ 777 break; 778 } 779 } 780 781 static void ocrdma_process_acqe(struct ocrdma_dev *dev, void *ae_cqe) 782 { 783 /* async CQE processing */ 784 struct ocrdma_ae_mcqe *cqe = ae_cqe; 785 u32 evt_code = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_CODE_MASK) >> 786 OCRDMA_AE_MCQE_EVENT_CODE_SHIFT; 787 788 if (evt_code == OCRDMA_ASYNC_RDMA_EVE_CODE) 789 ocrdma_dispatch_ibevent(dev, cqe); 790 else if (evt_code == OCRDMA_ASYNC_GRP5_EVE_CODE) 791 ocrdma_process_grp5_aync(dev, cqe); 792 else 793 pr_err("%s(%d) invalid evt code=0x%x\n", __func__, 794 dev->id, evt_code); 795 } 796 797 static void ocrdma_process_mcqe(struct ocrdma_dev *dev, struct ocrdma_mcqe *cqe) 798 { 799 if (dev->mqe_ctx.tag == cqe->tag_lo && dev->mqe_ctx.cmd_done == false) { 800 dev->mqe_ctx.cqe_status = (cqe->status & 801 OCRDMA_MCQE_STATUS_MASK) >> OCRDMA_MCQE_STATUS_SHIFT; 802 dev->mqe_ctx.ext_status = 803 (cqe->status & OCRDMA_MCQE_ESTATUS_MASK) 804 >> OCRDMA_MCQE_ESTATUS_SHIFT; 805 dev->mqe_ctx.cmd_done = true; 806 wake_up(&dev->mqe_ctx.cmd_wait); 807 } else 808 pr_err("%s() cqe for invalid tag0x%x.expected=0x%x\n", 809 __func__, cqe->tag_lo, dev->mqe_ctx.tag); 810 } 811 812 static int ocrdma_mq_cq_handler(struct ocrdma_dev *dev, u16 cq_id) 813 { 814 u16 cqe_popped = 0; 815 struct ocrdma_mcqe *cqe; 816 817 while (1) { 818 cqe = ocrdma_get_mcqe(dev); 819 if (cqe == NULL) 820 break; 821 ocrdma_le32_to_cpu(cqe, sizeof(*cqe)); 822 cqe_popped += 1; 823 if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_AE_MASK) 824 ocrdma_process_acqe(dev, cqe); 825 else if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_CMPL_MASK) 826 ocrdma_process_mcqe(dev, cqe); 827 memset(cqe, 0, sizeof(struct ocrdma_mcqe)); 828 ocrdma_mcq_inc_tail(dev); 829 } 830 ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, cqe_popped); 831 return 0; 832 } 833 834 static void ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev, 835 struct ocrdma_cq *cq) 836 { 837 unsigned long flags; 838 struct ocrdma_qp *qp; 839 bool buddy_cq_found = false; 840 /* Go through list of QPs in error state which are using this CQ 841 * and invoke its callback handler to trigger CQE processing for 842 * error/flushed CQE. It is rare to find more than few entries in 843 * this list as most consumers stops after getting error CQE. 844 * List is traversed only once when a matching buddy cq found for a QP. 845 */ 846 spin_lock_irqsave(&dev->flush_q_lock, flags); 847 list_for_each_entry(qp, &cq->sq_head, sq_entry) { 848 if (qp->srq) 849 continue; 850 /* if wq and rq share the same cq, than comp_handler 851 * is already invoked. 852 */ 853 if (qp->sq_cq == qp->rq_cq) 854 continue; 855 /* if completion came on sq, rq's cq is buddy cq. 856 * if completion came on rq, sq's cq is buddy cq. 857 */ 858 if (qp->sq_cq == cq) 859 cq = qp->rq_cq; 860 else 861 cq = qp->sq_cq; 862 buddy_cq_found = true; 863 break; 864 } 865 spin_unlock_irqrestore(&dev->flush_q_lock, flags); 866 if (buddy_cq_found == false) 867 return; 868 if (cq->ibcq.comp_handler) { 869 spin_lock_irqsave(&cq->comp_handler_lock, flags); 870 (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context); 871 spin_unlock_irqrestore(&cq->comp_handler_lock, flags); 872 } 873 } 874 875 static void ocrdma_qp_cq_handler(struct ocrdma_dev *dev, u16 cq_idx) 876 { 877 unsigned long flags; 878 struct ocrdma_cq *cq; 879 880 if (cq_idx >= OCRDMA_MAX_CQ) 881 BUG(); 882 883 cq = dev->cq_tbl[cq_idx]; 884 if (cq == NULL) 885 return; 886 887 if (cq->ibcq.comp_handler) { 888 spin_lock_irqsave(&cq->comp_handler_lock, flags); 889 (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context); 890 spin_unlock_irqrestore(&cq->comp_handler_lock, flags); 891 } 892 ocrdma_qp_buddy_cq_handler(dev, cq); 893 } 894 895 static void ocrdma_cq_handler(struct ocrdma_dev *dev, u16 cq_id) 896 { 897 /* process the MQ-CQE. */ 898 if (cq_id == dev->mq.cq.id) 899 ocrdma_mq_cq_handler(dev, cq_id); 900 else 901 ocrdma_qp_cq_handler(dev, cq_id); 902 } 903 904 static irqreturn_t ocrdma_irq_handler(int irq, void *handle) 905 { 906 struct ocrdma_eq *eq = handle; 907 struct ocrdma_dev *dev = eq->dev; 908 struct ocrdma_eqe eqe; 909 struct ocrdma_eqe *ptr; 910 u16 cq_id; 911 int budget = eq->cq_cnt; 912 913 do { 914 ptr = ocrdma_get_eqe(eq); 915 eqe = *ptr; 916 ocrdma_le32_to_cpu(&eqe, sizeof(eqe)); 917 if ((eqe.id_valid & OCRDMA_EQE_VALID_MASK) == 0) 918 break; 919 920 ptr->id_valid = 0; 921 /* ring eq doorbell as soon as its consumed. */ 922 ocrdma_ring_eq_db(dev, eq->q.id, false, true, 1); 923 /* check whether its CQE or not. */ 924 if ((eqe.id_valid & OCRDMA_EQE_FOR_CQE_MASK) == 0) { 925 cq_id = eqe.id_valid >> OCRDMA_EQE_RESOURCE_ID_SHIFT; 926 ocrdma_cq_handler(dev, cq_id); 927 } 928 ocrdma_eq_inc_tail(eq); 929 930 /* There can be a stale EQE after the last bound CQ is 931 * destroyed. EQE valid and budget == 0 implies this. 932 */ 933 if (budget) 934 budget--; 935 936 } while (budget); 937 938 ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0); 939 return IRQ_HANDLED; 940 } 941 942 static void ocrdma_post_mqe(struct ocrdma_dev *dev, struct ocrdma_mqe *cmd) 943 { 944 struct ocrdma_mqe *mqe; 945 946 dev->mqe_ctx.tag = dev->mq.sq.head; 947 dev->mqe_ctx.cmd_done = false; 948 mqe = ocrdma_get_mqe(dev); 949 cmd->hdr.tag_lo = dev->mq.sq.head; 950 ocrdma_copy_cpu_to_le32(mqe, cmd, sizeof(*mqe)); 951 /* make sure descriptor is written before ringing doorbell */ 952 wmb(); 953 ocrdma_mq_inc_head(dev); 954 ocrdma_ring_mq_db(dev); 955 } 956 957 static int ocrdma_wait_mqe_cmpl(struct ocrdma_dev *dev) 958 { 959 long status; 960 /* 30 sec timeout */ 961 status = wait_event_timeout(dev->mqe_ctx.cmd_wait, 962 (dev->mqe_ctx.cmd_done != false), 963 msecs_to_jiffies(30000)); 964 if (status) 965 return 0; 966 else { 967 dev->mqe_ctx.fw_error_state = true; 968 pr_err("%s(%d) mailbox timeout: fw not responding\n", 969 __func__, dev->id); 970 return -1; 971 } 972 } 973 974 /* issue a mailbox command on the MQ */ 975 static int ocrdma_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe) 976 { 977 int status = 0; 978 u16 cqe_status, ext_status; 979 struct ocrdma_mqe *rsp_mqe; 980 struct ocrdma_mbx_rsp *rsp = NULL; 981 982 mutex_lock(&dev->mqe_ctx.lock); 983 if (dev->mqe_ctx.fw_error_state) 984 goto mbx_err; 985 ocrdma_post_mqe(dev, mqe); 986 status = ocrdma_wait_mqe_cmpl(dev); 987 if (status) 988 goto mbx_err; 989 cqe_status = dev->mqe_ctx.cqe_status; 990 ext_status = dev->mqe_ctx.ext_status; 991 rsp_mqe = ocrdma_get_mqe_rsp(dev); 992 ocrdma_copy_le32_to_cpu(mqe, rsp_mqe, (sizeof(*mqe))); 993 if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >> 994 OCRDMA_MQE_HDR_EMB_SHIFT) 995 rsp = &mqe->u.rsp; 996 997 if (cqe_status || ext_status) { 998 pr_err("%s() cqe_status=0x%x, ext_status=0x%x,", 999 __func__, cqe_status, ext_status); 1000 if (rsp) { 1001 /* This is for embedded cmds. */ 1002 pr_err("opcode=0x%x, subsystem=0x%x\n", 1003 (rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >> 1004 OCRDMA_MBX_RSP_OPCODE_SHIFT, 1005 (rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >> 1006 OCRDMA_MBX_RSP_SUBSYS_SHIFT); 1007 } 1008 status = ocrdma_get_mbx_cqe_errno(cqe_status); 1009 goto mbx_err; 1010 } 1011 /* For non embedded, rsp errors are handled in ocrdma_nonemb_mbx_cmd */ 1012 if (rsp && (mqe->u.rsp.status & OCRDMA_MBX_RSP_STATUS_MASK)) 1013 status = ocrdma_get_mbx_errno(mqe->u.rsp.status); 1014 mbx_err: 1015 mutex_unlock(&dev->mqe_ctx.lock); 1016 return status; 1017 } 1018 1019 static int ocrdma_nonemb_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe, 1020 void *payload_va) 1021 { 1022 int status = 0; 1023 struct ocrdma_mbx_rsp *rsp = payload_va; 1024 1025 if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >> 1026 OCRDMA_MQE_HDR_EMB_SHIFT) 1027 BUG(); 1028 1029 status = ocrdma_mbx_cmd(dev, mqe); 1030 if (!status) 1031 /* For non embedded, only CQE failures are handled in 1032 * ocrdma_mbx_cmd. We need to check for RSP errors. 1033 */ 1034 if (rsp->status & OCRDMA_MBX_RSP_STATUS_MASK) 1035 status = ocrdma_get_mbx_errno(rsp->status); 1036 1037 if (status) 1038 pr_err("opcode=0x%x, subsystem=0x%x\n", 1039 (rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >> 1040 OCRDMA_MBX_RSP_OPCODE_SHIFT, 1041 (rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >> 1042 OCRDMA_MBX_RSP_SUBSYS_SHIFT); 1043 return status; 1044 } 1045 1046 static void ocrdma_get_attr(struct ocrdma_dev *dev, 1047 struct ocrdma_dev_attr *attr, 1048 struct ocrdma_mbx_query_config *rsp) 1049 { 1050 attr->max_pd = 1051 (rsp->max_pd_ca_ack_delay & OCRDMA_MBX_QUERY_CFG_MAX_PD_MASK) >> 1052 OCRDMA_MBX_QUERY_CFG_MAX_PD_SHIFT; 1053 attr->max_qp = 1054 (rsp->qp_srq_cq_ird_ord & OCRDMA_MBX_QUERY_CFG_MAX_QP_MASK) >> 1055 OCRDMA_MBX_QUERY_CFG_MAX_QP_SHIFT; 1056 attr->max_srq = 1057 (rsp->max_srq_rpir_qps & OCRDMA_MBX_QUERY_CFG_MAX_SRQ_MASK) >> 1058 OCRDMA_MBX_QUERY_CFG_MAX_SRQ_OFFSET; 1059 attr->max_send_sge = ((rsp->max_write_send_sge & 1060 OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >> 1061 OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT); 1062 attr->max_recv_sge = (rsp->max_write_send_sge & 1063 OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >> 1064 OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT; 1065 attr->max_srq_sge = (rsp->max_srq_rqe_sge & 1066 OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_MASK) >> 1067 OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_OFFSET; 1068 attr->max_rdma_sge = (rsp->max_write_send_sge & 1069 OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_MASK) >> 1070 OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_SHIFT; 1071 attr->max_ord_per_qp = (rsp->max_ird_ord_per_qp & 1072 OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK) >> 1073 OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT; 1074 attr->max_ird_per_qp = (rsp->max_ird_ord_per_qp & 1075 OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_MASK) >> 1076 OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_SHIFT; 1077 attr->cq_overflow_detect = (rsp->qp_srq_cq_ird_ord & 1078 OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_MASK) >> 1079 OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_SHIFT; 1080 attr->srq_supported = (rsp->qp_srq_cq_ird_ord & 1081 OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_MASK) >> 1082 OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_SHIFT; 1083 attr->local_ca_ack_delay = (rsp->max_pd_ca_ack_delay & 1084 OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_MASK) >> 1085 OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_SHIFT; 1086 attr->max_mw = rsp->max_mw; 1087 attr->max_mr = rsp->max_mr; 1088 attr->max_mr_size = ((u64)rsp->max_mr_size_hi << 32) | 1089 rsp->max_mr_size_lo; 1090 attr->max_fmr = 0; 1091 attr->max_pages_per_frmr = rsp->max_pages_per_frmr; 1092 attr->max_num_mr_pbl = rsp->max_num_mr_pbl; 1093 attr->max_cqe = rsp->max_cq_cqes_per_cq & 1094 OCRDMA_MBX_QUERY_CFG_MAX_CQES_PER_CQ_MASK; 1095 attr->max_cq = (rsp->max_cq_cqes_per_cq & 1096 OCRDMA_MBX_QUERY_CFG_MAX_CQ_MASK) >> 1097 OCRDMA_MBX_QUERY_CFG_MAX_CQ_OFFSET; 1098 attr->wqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs & 1099 OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_MASK) >> 1100 OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_OFFSET) * 1101 OCRDMA_WQE_STRIDE; 1102 attr->rqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs & 1103 OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_MASK) >> 1104 OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_OFFSET) * 1105 OCRDMA_WQE_STRIDE; 1106 attr->max_inline_data = 1107 attr->wqe_size - (sizeof(struct ocrdma_hdr_wqe) + 1108 sizeof(struct ocrdma_sge)); 1109 if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) { 1110 attr->ird = 1; 1111 attr->ird_page_size = OCRDMA_MIN_Q_PAGE_SIZE; 1112 attr->num_ird_pages = MAX_OCRDMA_IRD_PAGES; 1113 } 1114 dev->attr.max_wqe = rsp->max_wqes_rqes_per_q >> 1115 OCRDMA_MBX_QUERY_CFG_MAX_WQES_PER_WQ_OFFSET; 1116 dev->attr.max_rqe = rsp->max_wqes_rqes_per_q & 1117 OCRDMA_MBX_QUERY_CFG_MAX_RQES_PER_RQ_MASK; 1118 } 1119 1120 static int ocrdma_check_fw_config(struct ocrdma_dev *dev, 1121 struct ocrdma_fw_conf_rsp *conf) 1122 { 1123 u32 fn_mode; 1124 1125 fn_mode = conf->fn_mode & OCRDMA_FN_MODE_RDMA; 1126 if (fn_mode != OCRDMA_FN_MODE_RDMA) 1127 return -EINVAL; 1128 dev->base_eqid = conf->base_eqid; 1129 dev->max_eq = conf->max_eq; 1130 return 0; 1131 } 1132 1133 /* can be issued only during init time. */ 1134 static int ocrdma_mbx_query_fw_ver(struct ocrdma_dev *dev) 1135 { 1136 int status = -ENOMEM; 1137 struct ocrdma_mqe *cmd; 1138 struct ocrdma_fw_ver_rsp *rsp; 1139 1140 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_VER, sizeof(*cmd)); 1141 if (!cmd) 1142 return -ENOMEM; 1143 ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0], 1144 OCRDMA_CMD_GET_FW_VER, 1145 OCRDMA_SUBSYS_COMMON, sizeof(*cmd)); 1146 1147 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1148 if (status) 1149 goto mbx_err; 1150 rsp = (struct ocrdma_fw_ver_rsp *)cmd; 1151 memset(&dev->attr.fw_ver[0], 0, sizeof(dev->attr.fw_ver)); 1152 memcpy(&dev->attr.fw_ver[0], &rsp->running_ver[0], 1153 sizeof(rsp->running_ver)); 1154 ocrdma_le32_to_cpu(dev->attr.fw_ver, sizeof(rsp->running_ver)); 1155 mbx_err: 1156 kfree(cmd); 1157 return status; 1158 } 1159 1160 /* can be issued only during init time. */ 1161 static int ocrdma_mbx_query_fw_config(struct ocrdma_dev *dev) 1162 { 1163 int status = -ENOMEM; 1164 struct ocrdma_mqe *cmd; 1165 struct ocrdma_fw_conf_rsp *rsp; 1166 1167 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_CONFIG, sizeof(*cmd)); 1168 if (!cmd) 1169 return -ENOMEM; 1170 ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0], 1171 OCRDMA_CMD_GET_FW_CONFIG, 1172 OCRDMA_SUBSYS_COMMON, sizeof(*cmd)); 1173 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1174 if (status) 1175 goto mbx_err; 1176 rsp = (struct ocrdma_fw_conf_rsp *)cmd; 1177 status = ocrdma_check_fw_config(dev, rsp); 1178 mbx_err: 1179 kfree(cmd); 1180 return status; 1181 } 1182 1183 int ocrdma_mbx_rdma_stats(struct ocrdma_dev *dev, bool reset) 1184 { 1185 struct ocrdma_rdma_stats_req *req = dev->stats_mem.va; 1186 struct ocrdma_mqe *mqe = &dev->stats_mem.mqe; 1187 struct ocrdma_rdma_stats_resp *old_stats; 1188 int status; 1189 1190 old_stats = kmalloc(sizeof(*old_stats), GFP_KERNEL); 1191 if (old_stats == NULL) 1192 return -ENOMEM; 1193 1194 memset(mqe, 0, sizeof(*mqe)); 1195 mqe->hdr.pyld_len = dev->stats_mem.size; 1196 mqe->hdr.spcl_sge_cnt_emb |= 1197 (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) & 1198 OCRDMA_MQE_HDR_SGE_CNT_MASK; 1199 mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dev->stats_mem.pa & 0xffffffff); 1200 mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dev->stats_mem.pa); 1201 mqe->u.nonemb_req.sge[0].len = dev->stats_mem.size; 1202 1203 /* Cache the old stats */ 1204 memcpy(old_stats, req, sizeof(struct ocrdma_rdma_stats_resp)); 1205 memset(req, 0, dev->stats_mem.size); 1206 1207 ocrdma_init_mch((struct ocrdma_mbx_hdr *)req, 1208 OCRDMA_CMD_GET_RDMA_STATS, 1209 OCRDMA_SUBSYS_ROCE, 1210 dev->stats_mem.size); 1211 if (reset) 1212 req->reset_stats = reset; 1213 1214 status = ocrdma_nonemb_mbx_cmd(dev, mqe, dev->stats_mem.va); 1215 if (status) 1216 /* Copy from cache, if mbox fails */ 1217 memcpy(req, old_stats, sizeof(struct ocrdma_rdma_stats_resp)); 1218 else 1219 ocrdma_le32_to_cpu(req, dev->stats_mem.size); 1220 1221 kfree(old_stats); 1222 return status; 1223 } 1224 1225 static int ocrdma_mbx_get_ctrl_attribs(struct ocrdma_dev *dev) 1226 { 1227 int status = -ENOMEM; 1228 struct ocrdma_dma_mem dma; 1229 struct ocrdma_mqe *mqe; 1230 struct ocrdma_get_ctrl_attribs_rsp *ctrl_attr_rsp; 1231 struct mgmt_hba_attribs *hba_attribs; 1232 1233 mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL); 1234 if (!mqe) 1235 return status; 1236 1237 dma.size = sizeof(struct ocrdma_get_ctrl_attribs_rsp); 1238 dma.va = dma_alloc_coherent(&dev->nic_info.pdev->dev, 1239 dma.size, &dma.pa, GFP_KERNEL); 1240 if (!dma.va) 1241 goto free_mqe; 1242 1243 mqe->hdr.pyld_len = dma.size; 1244 mqe->hdr.spcl_sge_cnt_emb |= 1245 (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) & 1246 OCRDMA_MQE_HDR_SGE_CNT_MASK; 1247 mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dma.pa & 0xffffffff); 1248 mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dma.pa); 1249 mqe->u.nonemb_req.sge[0].len = dma.size; 1250 1251 memset(dma.va, 0, dma.size); 1252 ocrdma_init_mch((struct ocrdma_mbx_hdr *)dma.va, 1253 OCRDMA_CMD_GET_CTRL_ATTRIBUTES, 1254 OCRDMA_SUBSYS_COMMON, 1255 dma.size); 1256 1257 status = ocrdma_nonemb_mbx_cmd(dev, mqe, dma.va); 1258 if (!status) { 1259 ctrl_attr_rsp = (struct ocrdma_get_ctrl_attribs_rsp *)dma.va; 1260 hba_attribs = &ctrl_attr_rsp->ctrl_attribs.hba_attribs; 1261 1262 dev->hba_port_num = (hba_attribs->ptpnum_maxdoms_hbast_cv & 1263 OCRDMA_HBA_ATTRB_PTNUM_MASK) 1264 >> OCRDMA_HBA_ATTRB_PTNUM_SHIFT; 1265 strncpy(dev->model_number, 1266 hba_attribs->controller_model_number, 31); 1267 } 1268 dma_free_coherent(&dev->nic_info.pdev->dev, dma.size, dma.va, dma.pa); 1269 free_mqe: 1270 kfree(mqe); 1271 return status; 1272 } 1273 1274 static int ocrdma_mbx_query_dev(struct ocrdma_dev *dev) 1275 { 1276 int status = -ENOMEM; 1277 struct ocrdma_mbx_query_config *rsp; 1278 struct ocrdma_mqe *cmd; 1279 1280 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_CONFIG, sizeof(*cmd)); 1281 if (!cmd) 1282 return status; 1283 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1284 if (status) 1285 goto mbx_err; 1286 rsp = (struct ocrdma_mbx_query_config *)cmd; 1287 ocrdma_get_attr(dev, &dev->attr, rsp); 1288 mbx_err: 1289 kfree(cmd); 1290 return status; 1291 } 1292 1293 int ocrdma_mbx_get_link_speed(struct ocrdma_dev *dev, u8 *lnk_speed) 1294 { 1295 int status = -ENOMEM; 1296 struct ocrdma_get_link_speed_rsp *rsp; 1297 struct ocrdma_mqe *cmd; 1298 1299 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1, 1300 sizeof(*cmd)); 1301 if (!cmd) 1302 return status; 1303 ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0], 1304 OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1, 1305 OCRDMA_SUBSYS_COMMON, sizeof(*cmd)); 1306 1307 ((struct ocrdma_mbx_hdr *)cmd->u.cmd)->rsvd_version = 0x1; 1308 1309 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1310 if (status) 1311 goto mbx_err; 1312 1313 rsp = (struct ocrdma_get_link_speed_rsp *)cmd; 1314 *lnk_speed = (rsp->pflt_pps_ld_pnum & OCRDMA_PHY_PS_MASK) 1315 >> OCRDMA_PHY_PS_SHIFT; 1316 1317 mbx_err: 1318 kfree(cmd); 1319 return status; 1320 } 1321 1322 static int ocrdma_mbx_get_phy_info(struct ocrdma_dev *dev) 1323 { 1324 int status = -ENOMEM; 1325 struct ocrdma_mqe *cmd; 1326 struct ocrdma_get_phy_info_rsp *rsp; 1327 1328 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_PHY_DETAILS, sizeof(*cmd)); 1329 if (!cmd) 1330 return status; 1331 1332 ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0], 1333 OCRDMA_CMD_PHY_DETAILS, OCRDMA_SUBSYS_COMMON, 1334 sizeof(*cmd)); 1335 1336 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1337 if (status) 1338 goto mbx_err; 1339 1340 rsp = (struct ocrdma_get_phy_info_rsp *)cmd; 1341 dev->phy.phy_type = 1342 (rsp->ityp_ptyp & OCRDMA_PHY_TYPE_MASK); 1343 dev->phy.interface_type = 1344 (rsp->ityp_ptyp & OCRDMA_IF_TYPE_MASK) 1345 >> OCRDMA_IF_TYPE_SHIFT; 1346 dev->phy.auto_speeds_supported = 1347 (rsp->fspeed_aspeed & OCRDMA_ASPEED_SUPP_MASK); 1348 dev->phy.fixed_speeds_supported = 1349 (rsp->fspeed_aspeed & OCRDMA_FSPEED_SUPP_MASK) 1350 >> OCRDMA_FSPEED_SUPP_SHIFT; 1351 mbx_err: 1352 kfree(cmd); 1353 return status; 1354 } 1355 1356 int ocrdma_mbx_alloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd) 1357 { 1358 int status = -ENOMEM; 1359 struct ocrdma_alloc_pd *cmd; 1360 struct ocrdma_alloc_pd_rsp *rsp; 1361 1362 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD, sizeof(*cmd)); 1363 if (!cmd) 1364 return status; 1365 if (pd->dpp_enabled) 1366 cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP; 1367 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1368 if (status) 1369 goto mbx_err; 1370 rsp = (struct ocrdma_alloc_pd_rsp *)cmd; 1371 pd->id = rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_PDID_MASK; 1372 if (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) { 1373 pd->dpp_enabled = true; 1374 pd->dpp_page = rsp->dpp_page_pdid >> 1375 OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT; 1376 } else { 1377 pd->dpp_enabled = false; 1378 pd->num_dpp_qp = 0; 1379 } 1380 mbx_err: 1381 kfree(cmd); 1382 return status; 1383 } 1384 1385 int ocrdma_mbx_dealloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd) 1386 { 1387 int status = -ENOMEM; 1388 struct ocrdma_dealloc_pd *cmd; 1389 1390 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD, sizeof(*cmd)); 1391 if (!cmd) 1392 return status; 1393 cmd->id = pd->id; 1394 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1395 kfree(cmd); 1396 return status; 1397 } 1398 1399 static int ocrdma_build_q_conf(u32 *num_entries, int entry_size, 1400 int *num_pages, int *page_size) 1401 { 1402 int i; 1403 int mem_size; 1404 1405 *num_entries = roundup_pow_of_two(*num_entries); 1406 mem_size = *num_entries * entry_size; 1407 /* find the possible lowest possible multiplier */ 1408 for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) { 1409 if (mem_size <= (OCRDMA_Q_PAGE_BASE_SIZE << i)) 1410 break; 1411 } 1412 if (i >= OCRDMA_MAX_Q_PAGE_SIZE_CNT) 1413 return -EINVAL; 1414 mem_size = roundup(mem_size, 1415 ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES)); 1416 *num_pages = 1417 mem_size / ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES); 1418 *page_size = ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES); 1419 *num_entries = mem_size / entry_size; 1420 return 0; 1421 } 1422 1423 static int ocrdma_mbx_create_ah_tbl(struct ocrdma_dev *dev) 1424 { 1425 int i; 1426 int status = 0; 1427 int max_ah; 1428 struct ocrdma_create_ah_tbl *cmd; 1429 struct ocrdma_create_ah_tbl_rsp *rsp; 1430 struct pci_dev *pdev = dev->nic_info.pdev; 1431 dma_addr_t pa; 1432 struct ocrdma_pbe *pbes; 1433 1434 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_AH_TBL, sizeof(*cmd)); 1435 if (!cmd) 1436 return status; 1437 1438 max_ah = OCRDMA_MAX_AH; 1439 dev->av_tbl.size = sizeof(struct ocrdma_av) * max_ah; 1440 1441 /* number of PBEs in PBL */ 1442 cmd->ah_conf = (OCRDMA_AH_TBL_PAGES << 1443 OCRDMA_CREATE_AH_NUM_PAGES_SHIFT) & 1444 OCRDMA_CREATE_AH_NUM_PAGES_MASK; 1445 1446 /* page size */ 1447 for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) { 1448 if (PAGE_SIZE == (OCRDMA_MIN_Q_PAGE_SIZE << i)) 1449 break; 1450 } 1451 cmd->ah_conf |= (i << OCRDMA_CREATE_AH_PAGE_SIZE_SHIFT) & 1452 OCRDMA_CREATE_AH_PAGE_SIZE_MASK; 1453 1454 /* ah_entry size */ 1455 cmd->ah_conf |= (sizeof(struct ocrdma_av) << 1456 OCRDMA_CREATE_AH_ENTRY_SIZE_SHIFT) & 1457 OCRDMA_CREATE_AH_ENTRY_SIZE_MASK; 1458 1459 dev->av_tbl.pbl.va = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, 1460 &dev->av_tbl.pbl.pa, 1461 GFP_KERNEL); 1462 if (dev->av_tbl.pbl.va == NULL) 1463 goto mem_err; 1464 1465 dev->av_tbl.va = dma_alloc_coherent(&pdev->dev, dev->av_tbl.size, 1466 &pa, GFP_KERNEL); 1467 if (dev->av_tbl.va == NULL) 1468 goto mem_err_ah; 1469 dev->av_tbl.pa = pa; 1470 dev->av_tbl.num_ah = max_ah; 1471 memset(dev->av_tbl.va, 0, dev->av_tbl.size); 1472 1473 pbes = (struct ocrdma_pbe *)dev->av_tbl.pbl.va; 1474 for (i = 0; i < dev->av_tbl.size / OCRDMA_MIN_Q_PAGE_SIZE; i++) { 1475 pbes[i].pa_lo = (u32)cpu_to_le32(pa & 0xffffffff); 1476 pbes[i].pa_hi = (u32)cpu_to_le32(upper_32_bits(pa)); 1477 pa += PAGE_SIZE; 1478 } 1479 cmd->tbl_addr[0].lo = (u32)(dev->av_tbl.pbl.pa & 0xFFFFFFFF); 1480 cmd->tbl_addr[0].hi = (u32)upper_32_bits(dev->av_tbl.pbl.pa); 1481 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1482 if (status) 1483 goto mbx_err; 1484 rsp = (struct ocrdma_create_ah_tbl_rsp *)cmd; 1485 dev->av_tbl.ahid = rsp->ahid & 0xFFFF; 1486 kfree(cmd); 1487 return 0; 1488 1489 mbx_err: 1490 dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va, 1491 dev->av_tbl.pa); 1492 dev->av_tbl.va = NULL; 1493 mem_err_ah: 1494 dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va, 1495 dev->av_tbl.pbl.pa); 1496 dev->av_tbl.pbl.va = NULL; 1497 dev->av_tbl.size = 0; 1498 mem_err: 1499 kfree(cmd); 1500 return status; 1501 } 1502 1503 static void ocrdma_mbx_delete_ah_tbl(struct ocrdma_dev *dev) 1504 { 1505 struct ocrdma_delete_ah_tbl *cmd; 1506 struct pci_dev *pdev = dev->nic_info.pdev; 1507 1508 if (dev->av_tbl.va == NULL) 1509 return; 1510 1511 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_AH_TBL, sizeof(*cmd)); 1512 if (!cmd) 1513 return; 1514 cmd->ahid = dev->av_tbl.ahid; 1515 1516 ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1517 dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va, 1518 dev->av_tbl.pa); 1519 dev->av_tbl.va = NULL; 1520 dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va, 1521 dev->av_tbl.pbl.pa); 1522 kfree(cmd); 1523 } 1524 1525 /* Multiple CQs uses the EQ. This routine returns least used 1526 * EQ to associate with CQ. This will distributes the interrupt 1527 * processing and CPU load to associated EQ, vector and so to that CPU. 1528 */ 1529 static u16 ocrdma_bind_eq(struct ocrdma_dev *dev) 1530 { 1531 int i, selected_eq = 0, cq_cnt = 0; 1532 u16 eq_id; 1533 1534 mutex_lock(&dev->dev_lock); 1535 cq_cnt = dev->eq_tbl[0].cq_cnt; 1536 eq_id = dev->eq_tbl[0].q.id; 1537 /* find the EQ which is has the least number of 1538 * CQs associated with it. 1539 */ 1540 for (i = 0; i < dev->eq_cnt; i++) { 1541 if (dev->eq_tbl[i].cq_cnt < cq_cnt) { 1542 cq_cnt = dev->eq_tbl[i].cq_cnt; 1543 eq_id = dev->eq_tbl[i].q.id; 1544 selected_eq = i; 1545 } 1546 } 1547 dev->eq_tbl[selected_eq].cq_cnt += 1; 1548 mutex_unlock(&dev->dev_lock); 1549 return eq_id; 1550 } 1551 1552 static void ocrdma_unbind_eq(struct ocrdma_dev *dev, u16 eq_id) 1553 { 1554 int i; 1555 1556 mutex_lock(&dev->dev_lock); 1557 i = ocrdma_get_eq_table_index(dev, eq_id); 1558 if (i == -EINVAL) 1559 BUG(); 1560 dev->eq_tbl[i].cq_cnt -= 1; 1561 mutex_unlock(&dev->dev_lock); 1562 } 1563 1564 int ocrdma_mbx_create_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq, 1565 int entries, int dpp_cq, u16 pd_id) 1566 { 1567 int status = -ENOMEM; int max_hw_cqe; 1568 struct pci_dev *pdev = dev->nic_info.pdev; 1569 struct ocrdma_create_cq *cmd; 1570 struct ocrdma_create_cq_rsp *rsp; 1571 u32 hw_pages, cqe_size, page_size, cqe_count; 1572 1573 if (entries > dev->attr.max_cqe) { 1574 pr_err("%s(%d) max_cqe=0x%x, requester_cqe=0x%x\n", 1575 __func__, dev->id, dev->attr.max_cqe, entries); 1576 return -EINVAL; 1577 } 1578 if (dpp_cq && (ocrdma_get_asic_type(dev) != OCRDMA_ASIC_GEN_SKH_R)) 1579 return -EINVAL; 1580 1581 if (dpp_cq) { 1582 cq->max_hw_cqe = 1; 1583 max_hw_cqe = 1; 1584 cqe_size = OCRDMA_DPP_CQE_SIZE; 1585 hw_pages = 1; 1586 } else { 1587 cq->max_hw_cqe = dev->attr.max_cqe; 1588 max_hw_cqe = dev->attr.max_cqe; 1589 cqe_size = sizeof(struct ocrdma_cqe); 1590 hw_pages = OCRDMA_CREATE_CQ_MAX_PAGES; 1591 } 1592 1593 cq->len = roundup(max_hw_cqe * cqe_size, OCRDMA_MIN_Q_PAGE_SIZE); 1594 1595 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_CQ, sizeof(*cmd)); 1596 if (!cmd) 1597 return -ENOMEM; 1598 ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_CREATE_CQ, 1599 OCRDMA_SUBSYS_COMMON, sizeof(*cmd)); 1600 cq->va = dma_alloc_coherent(&pdev->dev, cq->len, &cq->pa, GFP_KERNEL); 1601 if (!cq->va) { 1602 status = -ENOMEM; 1603 goto mem_err; 1604 } 1605 memset(cq->va, 0, cq->len); 1606 page_size = cq->len / hw_pages; 1607 cmd->cmd.pgsz_pgcnt = (page_size / OCRDMA_MIN_Q_PAGE_SIZE) << 1608 OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT; 1609 cmd->cmd.pgsz_pgcnt |= hw_pages; 1610 cmd->cmd.ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS; 1611 1612 cq->eqn = ocrdma_bind_eq(dev); 1613 cmd->cmd.req.rsvd_version = OCRDMA_CREATE_CQ_VER3; 1614 cqe_count = cq->len / cqe_size; 1615 cq->cqe_cnt = cqe_count; 1616 if (cqe_count > 1024) { 1617 /* Set cnt to 3 to indicate more than 1024 cq entries */ 1618 cmd->cmd.ev_cnt_flags |= (0x3 << OCRDMA_CREATE_CQ_CNT_SHIFT); 1619 } else { 1620 u8 count = 0; 1621 switch (cqe_count) { 1622 case 256: 1623 count = 0; 1624 break; 1625 case 512: 1626 count = 1; 1627 break; 1628 case 1024: 1629 count = 2; 1630 break; 1631 default: 1632 goto mbx_err; 1633 } 1634 cmd->cmd.ev_cnt_flags |= (count << OCRDMA_CREATE_CQ_CNT_SHIFT); 1635 } 1636 /* shared eq between all the consumer cqs. */ 1637 cmd->cmd.eqn = cq->eqn; 1638 if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) { 1639 if (dpp_cq) 1640 cmd->cmd.pgsz_pgcnt |= OCRDMA_CREATE_CQ_DPP << 1641 OCRDMA_CREATE_CQ_TYPE_SHIFT; 1642 cq->phase_change = false; 1643 cmd->cmd.pdid_cqecnt = (cq->len / cqe_size); 1644 } else { 1645 cmd->cmd.pdid_cqecnt = (cq->len / cqe_size) - 1; 1646 cmd->cmd.ev_cnt_flags |= OCRDMA_CREATE_CQ_FLAGS_AUTO_VALID; 1647 cq->phase_change = true; 1648 } 1649 1650 /* pd_id valid only for v3 */ 1651 cmd->cmd.pdid_cqecnt |= (pd_id << 1652 OCRDMA_CREATE_CQ_CMD_PDID_SHIFT); 1653 ocrdma_build_q_pages(&cmd->cmd.pa[0], hw_pages, cq->pa, page_size); 1654 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1655 if (status) 1656 goto mbx_err; 1657 1658 rsp = (struct ocrdma_create_cq_rsp *)cmd; 1659 cq->id = (u16) (rsp->rsp.cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK); 1660 kfree(cmd); 1661 return 0; 1662 mbx_err: 1663 ocrdma_unbind_eq(dev, cq->eqn); 1664 dma_free_coherent(&pdev->dev, cq->len, cq->va, cq->pa); 1665 mem_err: 1666 kfree(cmd); 1667 return status; 1668 } 1669 1670 int ocrdma_mbx_destroy_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq) 1671 { 1672 int status = -ENOMEM; 1673 struct ocrdma_destroy_cq *cmd; 1674 1675 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_CQ, sizeof(*cmd)); 1676 if (!cmd) 1677 return status; 1678 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_DELETE_CQ, 1679 OCRDMA_SUBSYS_COMMON, sizeof(*cmd)); 1680 1681 cmd->bypass_flush_qid |= 1682 (cq->id << OCRDMA_DESTROY_CQ_QID_SHIFT) & 1683 OCRDMA_DESTROY_CQ_QID_MASK; 1684 1685 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1686 ocrdma_unbind_eq(dev, cq->eqn); 1687 dma_free_coherent(&dev->nic_info.pdev->dev, cq->len, cq->va, cq->pa); 1688 kfree(cmd); 1689 return status; 1690 } 1691 1692 int ocrdma_mbx_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr, 1693 u32 pdid, int addr_check) 1694 { 1695 int status = -ENOMEM; 1696 struct ocrdma_alloc_lkey *cmd; 1697 struct ocrdma_alloc_lkey_rsp *rsp; 1698 1699 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_LKEY, sizeof(*cmd)); 1700 if (!cmd) 1701 return status; 1702 cmd->pdid = pdid; 1703 cmd->pbl_sz_flags |= addr_check; 1704 cmd->pbl_sz_flags |= (hwmr->fr_mr << OCRDMA_ALLOC_LKEY_FMR_SHIFT); 1705 cmd->pbl_sz_flags |= 1706 (hwmr->remote_wr << OCRDMA_ALLOC_LKEY_REMOTE_WR_SHIFT); 1707 cmd->pbl_sz_flags |= 1708 (hwmr->remote_rd << OCRDMA_ALLOC_LKEY_REMOTE_RD_SHIFT); 1709 cmd->pbl_sz_flags |= 1710 (hwmr->local_wr << OCRDMA_ALLOC_LKEY_LOCAL_WR_SHIFT); 1711 cmd->pbl_sz_flags |= 1712 (hwmr->remote_atomic << OCRDMA_ALLOC_LKEY_REMOTE_ATOMIC_SHIFT); 1713 cmd->pbl_sz_flags |= 1714 (hwmr->num_pbls << OCRDMA_ALLOC_LKEY_PBL_SIZE_SHIFT); 1715 1716 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1717 if (status) 1718 goto mbx_err; 1719 rsp = (struct ocrdma_alloc_lkey_rsp *)cmd; 1720 hwmr->lkey = rsp->lrkey; 1721 mbx_err: 1722 kfree(cmd); 1723 return status; 1724 } 1725 1726 int ocrdma_mbx_dealloc_lkey(struct ocrdma_dev *dev, int fr_mr, u32 lkey) 1727 { 1728 int status = -ENOMEM; 1729 struct ocrdma_dealloc_lkey *cmd; 1730 1731 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_LKEY, sizeof(*cmd)); 1732 if (!cmd) 1733 return -ENOMEM; 1734 cmd->lkey = lkey; 1735 cmd->rsvd_frmr = fr_mr ? 1 : 0; 1736 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1737 if (status) 1738 goto mbx_err; 1739 mbx_err: 1740 kfree(cmd); 1741 return status; 1742 } 1743 1744 static int ocrdma_mbx_reg_mr(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr, 1745 u32 pdid, u32 pbl_cnt, u32 pbe_size, u32 last) 1746 { 1747 int status = -ENOMEM; 1748 int i; 1749 struct ocrdma_reg_nsmr *cmd; 1750 struct ocrdma_reg_nsmr_rsp *rsp; 1751 1752 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR, sizeof(*cmd)); 1753 if (!cmd) 1754 return -ENOMEM; 1755 cmd->num_pbl_pdid = 1756 pdid | (hwmr->num_pbls << OCRDMA_REG_NSMR_NUM_PBL_SHIFT); 1757 cmd->fr_mr = hwmr->fr_mr; 1758 1759 cmd->flags_hpage_pbe_sz |= (hwmr->remote_wr << 1760 OCRDMA_REG_NSMR_REMOTE_WR_SHIFT); 1761 cmd->flags_hpage_pbe_sz |= (hwmr->remote_rd << 1762 OCRDMA_REG_NSMR_REMOTE_RD_SHIFT); 1763 cmd->flags_hpage_pbe_sz |= (hwmr->local_wr << 1764 OCRDMA_REG_NSMR_LOCAL_WR_SHIFT); 1765 cmd->flags_hpage_pbe_sz |= (hwmr->remote_atomic << 1766 OCRDMA_REG_NSMR_REMOTE_ATOMIC_SHIFT); 1767 cmd->flags_hpage_pbe_sz |= (hwmr->mw_bind << 1768 OCRDMA_REG_NSMR_BIND_MEMWIN_SHIFT); 1769 cmd->flags_hpage_pbe_sz |= (last << OCRDMA_REG_NSMR_LAST_SHIFT); 1770 1771 cmd->flags_hpage_pbe_sz |= (hwmr->pbe_size / OCRDMA_MIN_HPAGE_SIZE); 1772 cmd->flags_hpage_pbe_sz |= (hwmr->pbl_size / OCRDMA_MIN_HPAGE_SIZE) << 1773 OCRDMA_REG_NSMR_HPAGE_SIZE_SHIFT; 1774 cmd->totlen_low = hwmr->len; 1775 cmd->totlen_high = upper_32_bits(hwmr->len); 1776 cmd->fbo_low = (u32) (hwmr->fbo & 0xffffffff); 1777 cmd->fbo_high = (u32) upper_32_bits(hwmr->fbo); 1778 cmd->va_loaddr = (u32) hwmr->va; 1779 cmd->va_hiaddr = (u32) upper_32_bits(hwmr->va); 1780 1781 for (i = 0; i < pbl_cnt; i++) { 1782 cmd->pbl[i].lo = (u32) (hwmr->pbl_table[i].pa & 0xffffffff); 1783 cmd->pbl[i].hi = upper_32_bits(hwmr->pbl_table[i].pa); 1784 } 1785 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1786 if (status) 1787 goto mbx_err; 1788 rsp = (struct ocrdma_reg_nsmr_rsp *)cmd; 1789 hwmr->lkey = rsp->lrkey; 1790 mbx_err: 1791 kfree(cmd); 1792 return status; 1793 } 1794 1795 static int ocrdma_mbx_reg_mr_cont(struct ocrdma_dev *dev, 1796 struct ocrdma_hw_mr *hwmr, u32 pbl_cnt, 1797 u32 pbl_offset, u32 last) 1798 { 1799 int status = -ENOMEM; 1800 int i; 1801 struct ocrdma_reg_nsmr_cont *cmd; 1802 1803 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR_CONT, sizeof(*cmd)); 1804 if (!cmd) 1805 return -ENOMEM; 1806 cmd->lrkey = hwmr->lkey; 1807 cmd->num_pbl_offset = (pbl_cnt << OCRDMA_REG_NSMR_CONT_NUM_PBL_SHIFT) | 1808 (pbl_offset & OCRDMA_REG_NSMR_CONT_PBL_SHIFT_MASK); 1809 cmd->last = last << OCRDMA_REG_NSMR_CONT_LAST_SHIFT; 1810 1811 for (i = 0; i < pbl_cnt; i++) { 1812 cmd->pbl[i].lo = 1813 (u32) (hwmr->pbl_table[i + pbl_offset].pa & 0xffffffff); 1814 cmd->pbl[i].hi = 1815 upper_32_bits(hwmr->pbl_table[i + pbl_offset].pa); 1816 } 1817 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 1818 if (status) 1819 goto mbx_err; 1820 mbx_err: 1821 kfree(cmd); 1822 return status; 1823 } 1824 1825 int ocrdma_reg_mr(struct ocrdma_dev *dev, 1826 struct ocrdma_hw_mr *hwmr, u32 pdid, int acc) 1827 { 1828 int status; 1829 u32 last = 0; 1830 u32 cur_pbl_cnt, pbl_offset; 1831 u32 pending_pbl_cnt = hwmr->num_pbls; 1832 1833 pbl_offset = 0; 1834 cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL); 1835 if (cur_pbl_cnt == pending_pbl_cnt) 1836 last = 1; 1837 1838 status = ocrdma_mbx_reg_mr(dev, hwmr, pdid, 1839 cur_pbl_cnt, hwmr->pbe_size, last); 1840 if (status) { 1841 pr_err("%s() status=%d\n", __func__, status); 1842 return status; 1843 } 1844 /* if there is no more pbls to register then exit. */ 1845 if (last) 1846 return 0; 1847 1848 while (!last) { 1849 pbl_offset += cur_pbl_cnt; 1850 pending_pbl_cnt -= cur_pbl_cnt; 1851 cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL); 1852 /* if we reach the end of the pbls, then need to set the last 1853 * bit, indicating no more pbls to register for this memory key. 1854 */ 1855 if (cur_pbl_cnt == pending_pbl_cnt) 1856 last = 1; 1857 1858 status = ocrdma_mbx_reg_mr_cont(dev, hwmr, cur_pbl_cnt, 1859 pbl_offset, last); 1860 if (status) 1861 break; 1862 } 1863 if (status) 1864 pr_err("%s() err. status=%d\n", __func__, status); 1865 1866 return status; 1867 } 1868 1869 bool ocrdma_is_qp_in_sq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp) 1870 { 1871 struct ocrdma_qp *tmp; 1872 bool found = false; 1873 list_for_each_entry(tmp, &cq->sq_head, sq_entry) { 1874 if (qp == tmp) { 1875 found = true; 1876 break; 1877 } 1878 } 1879 return found; 1880 } 1881 1882 bool ocrdma_is_qp_in_rq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp) 1883 { 1884 struct ocrdma_qp *tmp; 1885 bool found = false; 1886 list_for_each_entry(tmp, &cq->rq_head, rq_entry) { 1887 if (qp == tmp) { 1888 found = true; 1889 break; 1890 } 1891 } 1892 return found; 1893 } 1894 1895 void ocrdma_flush_qp(struct ocrdma_qp *qp) 1896 { 1897 bool found; 1898 unsigned long flags; 1899 1900 spin_lock_irqsave(&qp->dev->flush_q_lock, flags); 1901 found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp); 1902 if (!found) 1903 list_add_tail(&qp->sq_entry, &qp->sq_cq->sq_head); 1904 if (!qp->srq) { 1905 found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp); 1906 if (!found) 1907 list_add_tail(&qp->rq_entry, &qp->rq_cq->rq_head); 1908 } 1909 spin_unlock_irqrestore(&qp->dev->flush_q_lock, flags); 1910 } 1911 1912 static void ocrdma_init_hwq_ptr(struct ocrdma_qp *qp) 1913 { 1914 qp->sq.head = 0; 1915 qp->sq.tail = 0; 1916 qp->rq.head = 0; 1917 qp->rq.tail = 0; 1918 } 1919 1920 int ocrdma_qp_state_change(struct ocrdma_qp *qp, enum ib_qp_state new_ib_state, 1921 enum ib_qp_state *old_ib_state) 1922 { 1923 unsigned long flags; 1924 int status = 0; 1925 enum ocrdma_qp_state new_state; 1926 new_state = get_ocrdma_qp_state(new_ib_state); 1927 1928 /* sync with wqe and rqe posting */ 1929 spin_lock_irqsave(&qp->q_lock, flags); 1930 1931 if (old_ib_state) 1932 *old_ib_state = get_ibqp_state(qp->state); 1933 if (new_state == qp->state) { 1934 spin_unlock_irqrestore(&qp->q_lock, flags); 1935 return 1; 1936 } 1937 1938 1939 if (new_state == OCRDMA_QPS_INIT) { 1940 ocrdma_init_hwq_ptr(qp); 1941 ocrdma_del_flush_qp(qp); 1942 } else if (new_state == OCRDMA_QPS_ERR) { 1943 ocrdma_flush_qp(qp); 1944 } 1945 1946 qp->state = new_state; 1947 1948 spin_unlock_irqrestore(&qp->q_lock, flags); 1949 return status; 1950 } 1951 1952 static u32 ocrdma_set_create_qp_mbx_access_flags(struct ocrdma_qp *qp) 1953 { 1954 u32 flags = 0; 1955 if (qp->cap_flags & OCRDMA_QP_INB_RD) 1956 flags |= OCRDMA_CREATE_QP_REQ_INB_RDEN_MASK; 1957 if (qp->cap_flags & OCRDMA_QP_INB_WR) 1958 flags |= OCRDMA_CREATE_QP_REQ_INB_WREN_MASK; 1959 if (qp->cap_flags & OCRDMA_QP_MW_BIND) 1960 flags |= OCRDMA_CREATE_QP_REQ_BIND_MEMWIN_MASK; 1961 if (qp->cap_flags & OCRDMA_QP_LKEY0) 1962 flags |= OCRDMA_CREATE_QP_REQ_ZERO_LKEYEN_MASK; 1963 if (qp->cap_flags & OCRDMA_QP_FAST_REG) 1964 flags |= OCRDMA_CREATE_QP_REQ_FMR_EN_MASK; 1965 return flags; 1966 } 1967 1968 static int ocrdma_set_create_qp_sq_cmd(struct ocrdma_create_qp_req *cmd, 1969 struct ib_qp_init_attr *attrs, 1970 struct ocrdma_qp *qp) 1971 { 1972 int status; 1973 u32 len, hw_pages, hw_page_size; 1974 dma_addr_t pa; 1975 struct ocrdma_dev *dev = qp->dev; 1976 struct pci_dev *pdev = dev->nic_info.pdev; 1977 u32 max_wqe_allocated; 1978 u32 max_sges = attrs->cap.max_send_sge; 1979 1980 /* QP1 may exceed 127 */ 1981 max_wqe_allocated = min_t(u32, attrs->cap.max_send_wr + 1, 1982 dev->attr.max_wqe); 1983 1984 status = ocrdma_build_q_conf(&max_wqe_allocated, 1985 dev->attr.wqe_size, &hw_pages, &hw_page_size); 1986 if (status) { 1987 pr_err("%s() req. max_send_wr=0x%x\n", __func__, 1988 max_wqe_allocated); 1989 return -EINVAL; 1990 } 1991 qp->sq.max_cnt = max_wqe_allocated; 1992 len = (hw_pages * hw_page_size); 1993 1994 qp->sq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL); 1995 if (!qp->sq.va) 1996 return -EINVAL; 1997 memset(qp->sq.va, 0, len); 1998 qp->sq.len = len; 1999 qp->sq.pa = pa; 2000 qp->sq.entry_size = dev->attr.wqe_size; 2001 ocrdma_build_q_pages(&cmd->wq_addr[0], hw_pages, pa, hw_page_size); 2002 2003 cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE) 2004 << OCRDMA_CREATE_QP_REQ_SQ_PAGE_SIZE_SHIFT); 2005 cmd->num_wq_rq_pages |= (hw_pages << 2006 OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_SHIFT) & 2007 OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_MASK; 2008 cmd->max_sge_send_write |= (max_sges << 2009 OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_SHIFT) & 2010 OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_MASK; 2011 cmd->max_sge_send_write |= (max_sges << 2012 OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_SHIFT) & 2013 OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_MASK; 2014 cmd->max_wqe_rqe |= (ilog2(qp->sq.max_cnt) << 2015 OCRDMA_CREATE_QP_REQ_MAX_WQE_SHIFT) & 2016 OCRDMA_CREATE_QP_REQ_MAX_WQE_MASK; 2017 cmd->wqe_rqe_size |= (dev->attr.wqe_size << 2018 OCRDMA_CREATE_QP_REQ_WQE_SIZE_SHIFT) & 2019 OCRDMA_CREATE_QP_REQ_WQE_SIZE_MASK; 2020 return 0; 2021 } 2022 2023 static int ocrdma_set_create_qp_rq_cmd(struct ocrdma_create_qp_req *cmd, 2024 struct ib_qp_init_attr *attrs, 2025 struct ocrdma_qp *qp) 2026 { 2027 int status; 2028 u32 len, hw_pages, hw_page_size; 2029 dma_addr_t pa = 0; 2030 struct ocrdma_dev *dev = qp->dev; 2031 struct pci_dev *pdev = dev->nic_info.pdev; 2032 u32 max_rqe_allocated = attrs->cap.max_recv_wr + 1; 2033 2034 status = ocrdma_build_q_conf(&max_rqe_allocated, dev->attr.rqe_size, 2035 &hw_pages, &hw_page_size); 2036 if (status) { 2037 pr_err("%s() req. max_recv_wr=0x%x\n", __func__, 2038 attrs->cap.max_recv_wr + 1); 2039 return status; 2040 } 2041 qp->rq.max_cnt = max_rqe_allocated; 2042 len = (hw_pages * hw_page_size); 2043 2044 qp->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL); 2045 if (!qp->rq.va) 2046 return -ENOMEM; 2047 memset(qp->rq.va, 0, len); 2048 qp->rq.pa = pa; 2049 qp->rq.len = len; 2050 qp->rq.entry_size = dev->attr.rqe_size; 2051 2052 ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size); 2053 cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE) << 2054 OCRDMA_CREATE_QP_REQ_RQ_PAGE_SIZE_SHIFT); 2055 cmd->num_wq_rq_pages |= 2056 (hw_pages << OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_SHIFT) & 2057 OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_MASK; 2058 cmd->max_sge_recv_flags |= (attrs->cap.max_recv_sge << 2059 OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_SHIFT) & 2060 OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_MASK; 2061 cmd->max_wqe_rqe |= (ilog2(qp->rq.max_cnt) << 2062 OCRDMA_CREATE_QP_REQ_MAX_RQE_SHIFT) & 2063 OCRDMA_CREATE_QP_REQ_MAX_RQE_MASK; 2064 cmd->wqe_rqe_size |= (dev->attr.rqe_size << 2065 OCRDMA_CREATE_QP_REQ_RQE_SIZE_SHIFT) & 2066 OCRDMA_CREATE_QP_REQ_RQE_SIZE_MASK; 2067 return 0; 2068 } 2069 2070 static void ocrdma_set_create_qp_dpp_cmd(struct ocrdma_create_qp_req *cmd, 2071 struct ocrdma_pd *pd, 2072 struct ocrdma_qp *qp, 2073 u8 enable_dpp_cq, u16 dpp_cq_id) 2074 { 2075 pd->num_dpp_qp--; 2076 qp->dpp_enabled = true; 2077 cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK; 2078 if (!enable_dpp_cq) 2079 return; 2080 cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK; 2081 cmd->dpp_credits_cqid = dpp_cq_id; 2082 cmd->dpp_credits_cqid |= OCRDMA_CREATE_QP_REQ_DPP_CREDIT_LIMIT << 2083 OCRDMA_CREATE_QP_REQ_DPP_CREDIT_SHIFT; 2084 } 2085 2086 static int ocrdma_set_create_qp_ird_cmd(struct ocrdma_create_qp_req *cmd, 2087 struct ocrdma_qp *qp) 2088 { 2089 struct ocrdma_dev *dev = qp->dev; 2090 struct pci_dev *pdev = dev->nic_info.pdev; 2091 dma_addr_t pa = 0; 2092 int ird_page_size = dev->attr.ird_page_size; 2093 int ird_q_len = dev->attr.num_ird_pages * ird_page_size; 2094 struct ocrdma_hdr_wqe *rqe; 2095 int i = 0; 2096 2097 if (dev->attr.ird == 0) 2098 return 0; 2099 2100 qp->ird_q_va = dma_alloc_coherent(&pdev->dev, ird_q_len, 2101 &pa, GFP_KERNEL); 2102 if (!qp->ird_q_va) 2103 return -ENOMEM; 2104 memset(qp->ird_q_va, 0, ird_q_len); 2105 ocrdma_build_q_pages(&cmd->ird_addr[0], dev->attr.num_ird_pages, 2106 pa, ird_page_size); 2107 for (; i < ird_q_len / dev->attr.rqe_size; i++) { 2108 rqe = (struct ocrdma_hdr_wqe *)(qp->ird_q_va + 2109 (i * dev->attr.rqe_size)); 2110 rqe->cw = 0; 2111 rqe->cw |= 2; 2112 rqe->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT); 2113 rqe->cw |= (8 << OCRDMA_WQE_SIZE_SHIFT); 2114 rqe->cw |= (8 << OCRDMA_WQE_NXT_WQE_SIZE_SHIFT); 2115 } 2116 return 0; 2117 } 2118 2119 static void ocrdma_get_create_qp_rsp(struct ocrdma_create_qp_rsp *rsp, 2120 struct ocrdma_qp *qp, 2121 struct ib_qp_init_attr *attrs, 2122 u16 *dpp_offset, u16 *dpp_credit_lmt) 2123 { 2124 u32 max_wqe_allocated, max_rqe_allocated; 2125 qp->id = rsp->qp_id & OCRDMA_CREATE_QP_RSP_QP_ID_MASK; 2126 qp->rq.dbid = rsp->sq_rq_id & OCRDMA_CREATE_QP_RSP_RQ_ID_MASK; 2127 qp->sq.dbid = rsp->sq_rq_id >> OCRDMA_CREATE_QP_RSP_SQ_ID_SHIFT; 2128 qp->max_ird = rsp->max_ord_ird & OCRDMA_CREATE_QP_RSP_MAX_IRD_MASK; 2129 qp->max_ord = (rsp->max_ord_ird >> OCRDMA_CREATE_QP_RSP_MAX_ORD_SHIFT); 2130 qp->dpp_enabled = false; 2131 if (rsp->dpp_response & OCRDMA_CREATE_QP_RSP_DPP_ENABLED_MASK) { 2132 qp->dpp_enabled = true; 2133 *dpp_credit_lmt = (rsp->dpp_response & 2134 OCRDMA_CREATE_QP_RSP_DPP_CREDITS_MASK) >> 2135 OCRDMA_CREATE_QP_RSP_DPP_CREDITS_SHIFT; 2136 *dpp_offset = (rsp->dpp_response & 2137 OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_MASK) >> 2138 OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_SHIFT; 2139 } 2140 max_wqe_allocated = 2141 rsp->max_wqe_rqe >> OCRDMA_CREATE_QP_RSP_MAX_WQE_SHIFT; 2142 max_wqe_allocated = 1 << max_wqe_allocated; 2143 max_rqe_allocated = 1 << ((u16)rsp->max_wqe_rqe); 2144 2145 qp->sq.max_cnt = max_wqe_allocated; 2146 qp->sq.max_wqe_idx = max_wqe_allocated - 1; 2147 2148 if (!attrs->srq) { 2149 qp->rq.max_cnt = max_rqe_allocated; 2150 qp->rq.max_wqe_idx = max_rqe_allocated - 1; 2151 } 2152 } 2153 2154 int ocrdma_mbx_create_qp(struct ocrdma_qp *qp, struct ib_qp_init_attr *attrs, 2155 u8 enable_dpp_cq, u16 dpp_cq_id, u16 *dpp_offset, 2156 u16 *dpp_credit_lmt) 2157 { 2158 int status = -ENOMEM; 2159 u32 flags = 0; 2160 struct ocrdma_dev *dev = qp->dev; 2161 struct ocrdma_pd *pd = qp->pd; 2162 struct pci_dev *pdev = dev->nic_info.pdev; 2163 struct ocrdma_cq *cq; 2164 struct ocrdma_create_qp_req *cmd; 2165 struct ocrdma_create_qp_rsp *rsp; 2166 int qptype; 2167 2168 switch (attrs->qp_type) { 2169 case IB_QPT_GSI: 2170 qptype = OCRDMA_QPT_GSI; 2171 break; 2172 case IB_QPT_RC: 2173 qptype = OCRDMA_QPT_RC; 2174 break; 2175 case IB_QPT_UD: 2176 qptype = OCRDMA_QPT_UD; 2177 break; 2178 default: 2179 return -EINVAL; 2180 } 2181 2182 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_QP, sizeof(*cmd)); 2183 if (!cmd) 2184 return status; 2185 cmd->type_pgsz_pdn |= (qptype << OCRDMA_CREATE_QP_REQ_QPT_SHIFT) & 2186 OCRDMA_CREATE_QP_REQ_QPT_MASK; 2187 status = ocrdma_set_create_qp_sq_cmd(cmd, attrs, qp); 2188 if (status) 2189 goto sq_err; 2190 2191 if (attrs->srq) { 2192 struct ocrdma_srq *srq = get_ocrdma_srq(attrs->srq); 2193 cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_USE_SRQ_MASK; 2194 cmd->rq_addr[0].lo = srq->id; 2195 qp->srq = srq; 2196 } else { 2197 status = ocrdma_set_create_qp_rq_cmd(cmd, attrs, qp); 2198 if (status) 2199 goto rq_err; 2200 } 2201 2202 status = ocrdma_set_create_qp_ird_cmd(cmd, qp); 2203 if (status) 2204 goto mbx_err; 2205 2206 cmd->type_pgsz_pdn |= (pd->id << OCRDMA_CREATE_QP_REQ_PD_ID_SHIFT) & 2207 OCRDMA_CREATE_QP_REQ_PD_ID_MASK; 2208 2209 flags = ocrdma_set_create_qp_mbx_access_flags(qp); 2210 2211 cmd->max_sge_recv_flags |= flags; 2212 cmd->max_ord_ird |= (dev->attr.max_ord_per_qp << 2213 OCRDMA_CREATE_QP_REQ_MAX_ORD_SHIFT) & 2214 OCRDMA_CREATE_QP_REQ_MAX_ORD_MASK; 2215 cmd->max_ord_ird |= (dev->attr.max_ird_per_qp << 2216 OCRDMA_CREATE_QP_REQ_MAX_IRD_SHIFT) & 2217 OCRDMA_CREATE_QP_REQ_MAX_IRD_MASK; 2218 cq = get_ocrdma_cq(attrs->send_cq); 2219 cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_WQ_CQID_SHIFT) & 2220 OCRDMA_CREATE_QP_REQ_WQ_CQID_MASK; 2221 qp->sq_cq = cq; 2222 cq = get_ocrdma_cq(attrs->recv_cq); 2223 cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_RQ_CQID_SHIFT) & 2224 OCRDMA_CREATE_QP_REQ_RQ_CQID_MASK; 2225 qp->rq_cq = cq; 2226 2227 if (pd->dpp_enabled && attrs->cap.max_inline_data && pd->num_dpp_qp && 2228 (attrs->cap.max_inline_data <= dev->attr.max_inline_data)) { 2229 ocrdma_set_create_qp_dpp_cmd(cmd, pd, qp, enable_dpp_cq, 2230 dpp_cq_id); 2231 } 2232 2233 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 2234 if (status) 2235 goto mbx_err; 2236 rsp = (struct ocrdma_create_qp_rsp *)cmd; 2237 ocrdma_get_create_qp_rsp(rsp, qp, attrs, dpp_offset, dpp_credit_lmt); 2238 qp->state = OCRDMA_QPS_RST; 2239 kfree(cmd); 2240 return 0; 2241 mbx_err: 2242 if (qp->rq.va) 2243 dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa); 2244 rq_err: 2245 pr_err("%s(%d) rq_err\n", __func__, dev->id); 2246 dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa); 2247 sq_err: 2248 pr_err("%s(%d) sq_err\n", __func__, dev->id); 2249 kfree(cmd); 2250 return status; 2251 } 2252 2253 int ocrdma_mbx_query_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp, 2254 struct ocrdma_qp_params *param) 2255 { 2256 int status = -ENOMEM; 2257 struct ocrdma_query_qp *cmd; 2258 struct ocrdma_query_qp_rsp *rsp; 2259 2260 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_QP, sizeof(*cmd)); 2261 if (!cmd) 2262 return status; 2263 cmd->qp_id = qp->id; 2264 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 2265 if (status) 2266 goto mbx_err; 2267 rsp = (struct ocrdma_query_qp_rsp *)cmd; 2268 memcpy(param, &rsp->params, sizeof(struct ocrdma_qp_params)); 2269 mbx_err: 2270 kfree(cmd); 2271 return status; 2272 } 2273 2274 static int ocrdma_set_av_params(struct ocrdma_qp *qp, 2275 struct ocrdma_modify_qp *cmd, 2276 struct ib_qp_attr *attrs, 2277 int attr_mask) 2278 { 2279 int status; 2280 struct ib_ah_attr *ah_attr = &attrs->ah_attr; 2281 union ib_gid sgid, zgid; 2282 u32 vlan_id; 2283 u8 mac_addr[6]; 2284 2285 if ((ah_attr->ah_flags & IB_AH_GRH) == 0) 2286 return -EINVAL; 2287 if (atomic_cmpxchg(&qp->dev->update_sl, 1, 0)) 2288 ocrdma_init_service_level(qp->dev); 2289 cmd->params.tclass_sq_psn |= 2290 (ah_attr->grh.traffic_class << OCRDMA_QP_PARAMS_TCLASS_SHIFT); 2291 cmd->params.rnt_rc_sl_fl |= 2292 (ah_attr->grh.flow_label & OCRDMA_QP_PARAMS_FLOW_LABEL_MASK); 2293 cmd->params.rnt_rc_sl_fl |= (ah_attr->sl << OCRDMA_QP_PARAMS_SL_SHIFT); 2294 cmd->params.hop_lmt_rq_psn |= 2295 (ah_attr->grh.hop_limit << OCRDMA_QP_PARAMS_HOP_LMT_SHIFT); 2296 cmd->flags |= OCRDMA_QP_PARA_FLOW_LBL_VALID; 2297 memcpy(&cmd->params.dgid[0], &ah_attr->grh.dgid.raw[0], 2298 sizeof(cmd->params.dgid)); 2299 status = ocrdma_query_gid(&qp->dev->ibdev, 1, 2300 ah_attr->grh.sgid_index, &sgid); 2301 if (status) 2302 return status; 2303 2304 memset(&zgid, 0, sizeof(zgid)); 2305 if (!memcmp(&sgid, &zgid, sizeof(zgid))) 2306 return -EINVAL; 2307 2308 qp->sgid_idx = ah_attr->grh.sgid_index; 2309 memcpy(&cmd->params.sgid[0], &sgid.raw[0], sizeof(cmd->params.sgid)); 2310 ocrdma_resolve_dmac(qp->dev, ah_attr, &mac_addr[0]); 2311 cmd->params.dmac_b0_to_b3 = mac_addr[0] | (mac_addr[1] << 8) | 2312 (mac_addr[2] << 16) | (mac_addr[3] << 24); 2313 /* convert them to LE format. */ 2314 ocrdma_cpu_to_le32(&cmd->params.dgid[0], sizeof(cmd->params.dgid)); 2315 ocrdma_cpu_to_le32(&cmd->params.sgid[0], sizeof(cmd->params.sgid)); 2316 cmd->params.vlan_dmac_b4_to_b5 = mac_addr[4] | (mac_addr[5] << 8); 2317 if (attr_mask & IB_QP_VID) { 2318 vlan_id = attrs->vlan_id; 2319 cmd->params.vlan_dmac_b4_to_b5 |= 2320 vlan_id << OCRDMA_QP_PARAMS_VLAN_SHIFT; 2321 cmd->flags |= OCRDMA_QP_PARA_VLAN_EN_VALID; 2322 cmd->params.rnt_rc_sl_fl |= 2323 (qp->dev->sl & 0x07) << OCRDMA_QP_PARAMS_SL_SHIFT; 2324 } 2325 return 0; 2326 } 2327 2328 static int ocrdma_set_qp_params(struct ocrdma_qp *qp, 2329 struct ocrdma_modify_qp *cmd, 2330 struct ib_qp_attr *attrs, int attr_mask) 2331 { 2332 int status = 0; 2333 2334 if (attr_mask & IB_QP_PKEY_INDEX) { 2335 cmd->params.path_mtu_pkey_indx |= (attrs->pkey_index & 2336 OCRDMA_QP_PARAMS_PKEY_INDEX_MASK); 2337 cmd->flags |= OCRDMA_QP_PARA_PKEY_VALID; 2338 } 2339 if (attr_mask & IB_QP_QKEY) { 2340 qp->qkey = attrs->qkey; 2341 cmd->params.qkey = attrs->qkey; 2342 cmd->flags |= OCRDMA_QP_PARA_QKEY_VALID; 2343 } 2344 if (attr_mask & IB_QP_AV) { 2345 status = ocrdma_set_av_params(qp, cmd, attrs, attr_mask); 2346 if (status) 2347 return status; 2348 } else if (qp->qp_type == IB_QPT_GSI || qp->qp_type == IB_QPT_UD) { 2349 /* set the default mac address for UD, GSI QPs */ 2350 cmd->params.dmac_b0_to_b3 = qp->dev->nic_info.mac_addr[0] | 2351 (qp->dev->nic_info.mac_addr[1] << 8) | 2352 (qp->dev->nic_info.mac_addr[2] << 16) | 2353 (qp->dev->nic_info.mac_addr[3] << 24); 2354 cmd->params.vlan_dmac_b4_to_b5 = qp->dev->nic_info.mac_addr[4] | 2355 (qp->dev->nic_info.mac_addr[5] << 8); 2356 } 2357 if ((attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) && 2358 attrs->en_sqd_async_notify) { 2359 cmd->params.max_sge_recv_flags |= 2360 OCRDMA_QP_PARAMS_FLAGS_SQD_ASYNC; 2361 cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID; 2362 } 2363 if (attr_mask & IB_QP_DEST_QPN) { 2364 cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->dest_qp_num & 2365 OCRDMA_QP_PARAMS_DEST_QPN_MASK); 2366 cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID; 2367 } 2368 if (attr_mask & IB_QP_PATH_MTU) { 2369 if (attrs->path_mtu < IB_MTU_256 || 2370 attrs->path_mtu > IB_MTU_4096) { 2371 status = -EINVAL; 2372 goto pmtu_err; 2373 } 2374 cmd->params.path_mtu_pkey_indx |= 2375 (ib_mtu_enum_to_int(attrs->path_mtu) << 2376 OCRDMA_QP_PARAMS_PATH_MTU_SHIFT) & 2377 OCRDMA_QP_PARAMS_PATH_MTU_MASK; 2378 cmd->flags |= OCRDMA_QP_PARA_PMTU_VALID; 2379 } 2380 if (attr_mask & IB_QP_TIMEOUT) { 2381 cmd->params.ack_to_rnr_rtc_dest_qpn |= attrs->timeout << 2382 OCRDMA_QP_PARAMS_ACK_TIMEOUT_SHIFT; 2383 cmd->flags |= OCRDMA_QP_PARA_ACK_TO_VALID; 2384 } 2385 if (attr_mask & IB_QP_RETRY_CNT) { 2386 cmd->params.rnt_rc_sl_fl |= (attrs->retry_cnt << 2387 OCRDMA_QP_PARAMS_RETRY_CNT_SHIFT) & 2388 OCRDMA_QP_PARAMS_RETRY_CNT_MASK; 2389 cmd->flags |= OCRDMA_QP_PARA_RETRY_CNT_VALID; 2390 } 2391 if (attr_mask & IB_QP_MIN_RNR_TIMER) { 2392 cmd->params.rnt_rc_sl_fl |= (attrs->min_rnr_timer << 2393 OCRDMA_QP_PARAMS_RNR_NAK_TIMER_SHIFT) & 2394 OCRDMA_QP_PARAMS_RNR_NAK_TIMER_MASK; 2395 cmd->flags |= OCRDMA_QP_PARA_RNT_VALID; 2396 } 2397 if (attr_mask & IB_QP_RNR_RETRY) { 2398 cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->rnr_retry << 2399 OCRDMA_QP_PARAMS_RNR_RETRY_CNT_SHIFT) 2400 & OCRDMA_QP_PARAMS_RNR_RETRY_CNT_MASK; 2401 cmd->flags |= OCRDMA_QP_PARA_RRC_VALID; 2402 } 2403 if (attr_mask & IB_QP_SQ_PSN) { 2404 cmd->params.tclass_sq_psn |= (attrs->sq_psn & 0x00ffffff); 2405 cmd->flags |= OCRDMA_QP_PARA_SQPSN_VALID; 2406 } 2407 if (attr_mask & IB_QP_RQ_PSN) { 2408 cmd->params.hop_lmt_rq_psn |= (attrs->rq_psn & 0x00ffffff); 2409 cmd->flags |= OCRDMA_QP_PARA_RQPSN_VALID; 2410 } 2411 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { 2412 if (attrs->max_rd_atomic > qp->dev->attr.max_ord_per_qp) { 2413 status = -EINVAL; 2414 goto pmtu_err; 2415 } 2416 qp->max_ord = attrs->max_rd_atomic; 2417 cmd->flags |= OCRDMA_QP_PARA_MAX_ORD_VALID; 2418 } 2419 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { 2420 if (attrs->max_dest_rd_atomic > qp->dev->attr.max_ird_per_qp) { 2421 status = -EINVAL; 2422 goto pmtu_err; 2423 } 2424 qp->max_ird = attrs->max_dest_rd_atomic; 2425 cmd->flags |= OCRDMA_QP_PARA_MAX_IRD_VALID; 2426 } 2427 cmd->params.max_ord_ird = (qp->max_ord << 2428 OCRDMA_QP_PARAMS_MAX_ORD_SHIFT) | 2429 (qp->max_ird & OCRDMA_QP_PARAMS_MAX_IRD_MASK); 2430 pmtu_err: 2431 return status; 2432 } 2433 2434 int ocrdma_mbx_modify_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp, 2435 struct ib_qp_attr *attrs, int attr_mask) 2436 { 2437 int status = -ENOMEM; 2438 struct ocrdma_modify_qp *cmd; 2439 2440 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_QP, sizeof(*cmd)); 2441 if (!cmd) 2442 return status; 2443 2444 cmd->params.id = qp->id; 2445 cmd->flags = 0; 2446 if (attr_mask & IB_QP_STATE) { 2447 cmd->params.max_sge_recv_flags |= 2448 (get_ocrdma_qp_state(attrs->qp_state) << 2449 OCRDMA_QP_PARAMS_STATE_SHIFT) & 2450 OCRDMA_QP_PARAMS_STATE_MASK; 2451 cmd->flags |= OCRDMA_QP_PARA_QPS_VALID; 2452 } else { 2453 cmd->params.max_sge_recv_flags |= 2454 (qp->state << OCRDMA_QP_PARAMS_STATE_SHIFT) & 2455 OCRDMA_QP_PARAMS_STATE_MASK; 2456 } 2457 2458 status = ocrdma_set_qp_params(qp, cmd, attrs, attr_mask); 2459 if (status) 2460 goto mbx_err; 2461 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 2462 if (status) 2463 goto mbx_err; 2464 2465 mbx_err: 2466 kfree(cmd); 2467 return status; 2468 } 2469 2470 int ocrdma_mbx_destroy_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp) 2471 { 2472 int status = -ENOMEM; 2473 struct ocrdma_destroy_qp *cmd; 2474 struct pci_dev *pdev = dev->nic_info.pdev; 2475 2476 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_QP, sizeof(*cmd)); 2477 if (!cmd) 2478 return status; 2479 cmd->qp_id = qp->id; 2480 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 2481 if (status) 2482 goto mbx_err; 2483 2484 mbx_err: 2485 kfree(cmd); 2486 if (qp->sq.va) 2487 dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa); 2488 if (!qp->srq && qp->rq.va) 2489 dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa); 2490 if (qp->dpp_enabled) 2491 qp->pd->num_dpp_qp++; 2492 return status; 2493 } 2494 2495 int ocrdma_mbx_create_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq, 2496 struct ib_srq_init_attr *srq_attr, 2497 struct ocrdma_pd *pd) 2498 { 2499 int status = -ENOMEM; 2500 int hw_pages, hw_page_size; 2501 int len; 2502 struct ocrdma_create_srq_rsp *rsp; 2503 struct ocrdma_create_srq *cmd; 2504 dma_addr_t pa; 2505 struct pci_dev *pdev = dev->nic_info.pdev; 2506 u32 max_rqe_allocated; 2507 2508 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_SRQ, sizeof(*cmd)); 2509 if (!cmd) 2510 return status; 2511 2512 cmd->pgsz_pdid = pd->id & OCRDMA_CREATE_SRQ_PD_ID_MASK; 2513 max_rqe_allocated = srq_attr->attr.max_wr + 1; 2514 status = ocrdma_build_q_conf(&max_rqe_allocated, 2515 dev->attr.rqe_size, 2516 &hw_pages, &hw_page_size); 2517 if (status) { 2518 pr_err("%s() req. max_wr=0x%x\n", __func__, 2519 srq_attr->attr.max_wr); 2520 status = -EINVAL; 2521 goto ret; 2522 } 2523 len = hw_pages * hw_page_size; 2524 srq->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL); 2525 if (!srq->rq.va) { 2526 status = -ENOMEM; 2527 goto ret; 2528 } 2529 ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size); 2530 2531 srq->rq.entry_size = dev->attr.rqe_size; 2532 srq->rq.pa = pa; 2533 srq->rq.len = len; 2534 srq->rq.max_cnt = max_rqe_allocated; 2535 2536 cmd->max_sge_rqe = ilog2(max_rqe_allocated); 2537 cmd->max_sge_rqe |= srq_attr->attr.max_sge << 2538 OCRDMA_CREATE_SRQ_MAX_SGE_RECV_SHIFT; 2539 2540 cmd->pgsz_pdid |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE) 2541 << OCRDMA_CREATE_SRQ_PG_SZ_SHIFT); 2542 cmd->pages_rqe_sz |= (dev->attr.rqe_size 2543 << OCRDMA_CREATE_SRQ_RQE_SIZE_SHIFT) 2544 & OCRDMA_CREATE_SRQ_RQE_SIZE_MASK; 2545 cmd->pages_rqe_sz |= hw_pages << OCRDMA_CREATE_SRQ_NUM_RQ_PAGES_SHIFT; 2546 2547 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 2548 if (status) 2549 goto mbx_err; 2550 rsp = (struct ocrdma_create_srq_rsp *)cmd; 2551 srq->id = rsp->id; 2552 srq->rq.dbid = rsp->id; 2553 max_rqe_allocated = ((rsp->max_sge_rqe_allocated & 2554 OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_MASK) >> 2555 OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_SHIFT); 2556 max_rqe_allocated = (1 << max_rqe_allocated); 2557 srq->rq.max_cnt = max_rqe_allocated; 2558 srq->rq.max_wqe_idx = max_rqe_allocated - 1; 2559 srq->rq.max_sges = (rsp->max_sge_rqe_allocated & 2560 OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_MASK) >> 2561 OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_SHIFT; 2562 goto ret; 2563 mbx_err: 2564 dma_free_coherent(&pdev->dev, srq->rq.len, srq->rq.va, pa); 2565 ret: 2566 kfree(cmd); 2567 return status; 2568 } 2569 2570 int ocrdma_mbx_modify_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr) 2571 { 2572 int status = -ENOMEM; 2573 struct ocrdma_modify_srq *cmd; 2574 struct ocrdma_pd *pd = srq->pd; 2575 struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device); 2576 2577 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_SRQ, sizeof(*cmd)); 2578 if (!cmd) 2579 return status; 2580 cmd->id = srq->id; 2581 cmd->limit_max_rqe |= srq_attr->srq_limit << 2582 OCRDMA_MODIFY_SRQ_LIMIT_SHIFT; 2583 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 2584 kfree(cmd); 2585 return status; 2586 } 2587 2588 int ocrdma_mbx_query_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr) 2589 { 2590 int status = -ENOMEM; 2591 struct ocrdma_query_srq *cmd; 2592 struct ocrdma_dev *dev = get_ocrdma_dev(srq->ibsrq.device); 2593 2594 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_SRQ, sizeof(*cmd)); 2595 if (!cmd) 2596 return status; 2597 cmd->id = srq->rq.dbid; 2598 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 2599 if (status == 0) { 2600 struct ocrdma_query_srq_rsp *rsp = 2601 (struct ocrdma_query_srq_rsp *)cmd; 2602 srq_attr->max_sge = 2603 rsp->srq_lmt_max_sge & 2604 OCRDMA_QUERY_SRQ_RSP_MAX_SGE_RECV_MASK; 2605 srq_attr->max_wr = 2606 rsp->max_rqe_pdid >> OCRDMA_QUERY_SRQ_RSP_MAX_RQE_SHIFT; 2607 srq_attr->srq_limit = rsp->srq_lmt_max_sge >> 2608 OCRDMA_QUERY_SRQ_RSP_SRQ_LIMIT_SHIFT; 2609 } 2610 kfree(cmd); 2611 return status; 2612 } 2613 2614 int ocrdma_mbx_destroy_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq) 2615 { 2616 int status = -ENOMEM; 2617 struct ocrdma_destroy_srq *cmd; 2618 struct pci_dev *pdev = dev->nic_info.pdev; 2619 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_SRQ, sizeof(*cmd)); 2620 if (!cmd) 2621 return status; 2622 cmd->id = srq->id; 2623 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd); 2624 if (srq->rq.va) 2625 dma_free_coherent(&pdev->dev, srq->rq.len, 2626 srq->rq.va, srq->rq.pa); 2627 kfree(cmd); 2628 return status; 2629 } 2630 2631 static int ocrdma_mbx_get_dcbx_config(struct ocrdma_dev *dev, u32 ptype, 2632 struct ocrdma_dcbx_cfg *dcbxcfg) 2633 { 2634 int status = 0; 2635 dma_addr_t pa; 2636 struct ocrdma_mqe cmd; 2637 2638 struct ocrdma_get_dcbx_cfg_req *req = NULL; 2639 struct ocrdma_get_dcbx_cfg_rsp *rsp = NULL; 2640 struct pci_dev *pdev = dev->nic_info.pdev; 2641 struct ocrdma_mqe_sge *mqe_sge = cmd.u.nonemb_req.sge; 2642 2643 memset(&cmd, 0, sizeof(struct ocrdma_mqe)); 2644 cmd.hdr.pyld_len = max_t (u32, sizeof(struct ocrdma_get_dcbx_cfg_rsp), 2645 sizeof(struct ocrdma_get_dcbx_cfg_req)); 2646 req = dma_alloc_coherent(&pdev->dev, cmd.hdr.pyld_len, &pa, GFP_KERNEL); 2647 if (!req) { 2648 status = -ENOMEM; 2649 goto mem_err; 2650 } 2651 2652 cmd.hdr.spcl_sge_cnt_emb |= (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) & 2653 OCRDMA_MQE_HDR_SGE_CNT_MASK; 2654 mqe_sge->pa_lo = (u32) (pa & 0xFFFFFFFFUL); 2655 mqe_sge->pa_hi = (u32) upper_32_bits(pa); 2656 mqe_sge->len = cmd.hdr.pyld_len; 2657 2658 memset(req, 0, sizeof(struct ocrdma_get_dcbx_cfg_req)); 2659 ocrdma_init_mch(&req->hdr, OCRDMA_CMD_GET_DCBX_CONFIG, 2660 OCRDMA_SUBSYS_DCBX, cmd.hdr.pyld_len); 2661 req->param_type = ptype; 2662 2663 status = ocrdma_mbx_cmd(dev, &cmd); 2664 if (status) 2665 goto mbx_err; 2666 2667 rsp = (struct ocrdma_get_dcbx_cfg_rsp *)req; 2668 ocrdma_le32_to_cpu(rsp, sizeof(struct ocrdma_get_dcbx_cfg_rsp)); 2669 memcpy(dcbxcfg, &rsp->cfg, sizeof(struct ocrdma_dcbx_cfg)); 2670 2671 mbx_err: 2672 dma_free_coherent(&pdev->dev, cmd.hdr.pyld_len, req, pa); 2673 mem_err: 2674 return status; 2675 } 2676 2677 #define OCRDMA_MAX_SERVICE_LEVEL_INDEX 0x08 2678 #define OCRDMA_DEFAULT_SERVICE_LEVEL 0x05 2679 2680 static int ocrdma_parse_dcbxcfg_rsp(struct ocrdma_dev *dev, int ptype, 2681 struct ocrdma_dcbx_cfg *dcbxcfg, 2682 u8 *srvc_lvl) 2683 { 2684 int status = -EINVAL, indx, slindx; 2685 int ventry_cnt; 2686 struct ocrdma_app_parameter *app_param; 2687 u8 valid, proto_sel; 2688 u8 app_prio, pfc_prio; 2689 u16 proto; 2690 2691 if (!(dcbxcfg->tcv_aev_opv_st & OCRDMA_DCBX_STATE_MASK)) { 2692 pr_info("%s ocrdma%d DCBX is disabled\n", 2693 dev_name(&dev->nic_info.pdev->dev), dev->id); 2694 goto out; 2695 } 2696 2697 if (!ocrdma_is_enabled_and_synced(dcbxcfg->pfc_state)) { 2698 pr_info("%s ocrdma%d priority flow control(%s) is %s%s\n", 2699 dev_name(&dev->nic_info.pdev->dev), dev->id, 2700 (ptype > 0 ? "operational" : "admin"), 2701 (dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_ENABLED) ? 2702 "enabled" : "disabled", 2703 (dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_SYNC) ? 2704 "" : ", not sync'ed"); 2705 goto out; 2706 } else { 2707 pr_info("%s ocrdma%d priority flow control is enabled and sync'ed\n", 2708 dev_name(&dev->nic_info.pdev->dev), dev->id); 2709 } 2710 2711 ventry_cnt = (dcbxcfg->tcv_aev_opv_st >> 2712 OCRDMA_DCBX_APP_ENTRY_SHIFT) 2713 & OCRDMA_DCBX_STATE_MASK; 2714 2715 for (indx = 0; indx < ventry_cnt; indx++) { 2716 app_param = &dcbxcfg->app_param[indx]; 2717 valid = (app_param->valid_proto_app >> 2718 OCRDMA_APP_PARAM_VALID_SHIFT) 2719 & OCRDMA_APP_PARAM_VALID_MASK; 2720 proto_sel = (app_param->valid_proto_app 2721 >> OCRDMA_APP_PARAM_PROTO_SEL_SHIFT) 2722 & OCRDMA_APP_PARAM_PROTO_SEL_MASK; 2723 proto = app_param->valid_proto_app & 2724 OCRDMA_APP_PARAM_APP_PROTO_MASK; 2725 2726 if ( 2727 valid && proto == OCRDMA_APP_PROTO_ROCE && 2728 proto_sel == OCRDMA_PROTO_SELECT_L2) { 2729 for (slindx = 0; slindx < 2730 OCRDMA_MAX_SERVICE_LEVEL_INDEX; slindx++) { 2731 app_prio = ocrdma_get_app_prio( 2732 (u8 *)app_param->app_prio, 2733 slindx); 2734 pfc_prio = ocrdma_get_pfc_prio( 2735 (u8 *)dcbxcfg->pfc_prio, 2736 slindx); 2737 2738 if (app_prio && pfc_prio) { 2739 *srvc_lvl = slindx; 2740 status = 0; 2741 goto out; 2742 } 2743 } 2744 if (slindx == OCRDMA_MAX_SERVICE_LEVEL_INDEX) { 2745 pr_info("%s ocrdma%d application priority not set for 0x%x protocol\n", 2746 dev_name(&dev->nic_info.pdev->dev), 2747 dev->id, proto); 2748 } 2749 } 2750 } 2751 2752 out: 2753 return status; 2754 } 2755 2756 void ocrdma_init_service_level(struct ocrdma_dev *dev) 2757 { 2758 int status = 0, indx; 2759 struct ocrdma_dcbx_cfg dcbxcfg; 2760 u8 srvc_lvl = OCRDMA_DEFAULT_SERVICE_LEVEL; 2761 int ptype = OCRDMA_PARAMETER_TYPE_OPER; 2762 2763 for (indx = 0; indx < 2; indx++) { 2764 status = ocrdma_mbx_get_dcbx_config(dev, ptype, &dcbxcfg); 2765 if (status) { 2766 pr_err("%s(): status=%d\n", __func__, status); 2767 ptype = OCRDMA_PARAMETER_TYPE_ADMIN; 2768 continue; 2769 } 2770 2771 status = ocrdma_parse_dcbxcfg_rsp(dev, ptype, 2772 &dcbxcfg, &srvc_lvl); 2773 if (status) { 2774 ptype = OCRDMA_PARAMETER_TYPE_ADMIN; 2775 continue; 2776 } 2777 2778 break; 2779 } 2780 2781 if (status) 2782 pr_info("%s ocrdma%d service level default\n", 2783 dev_name(&dev->nic_info.pdev->dev), dev->id); 2784 else 2785 pr_info("%s ocrdma%d service level %d\n", 2786 dev_name(&dev->nic_info.pdev->dev), dev->id, 2787 srvc_lvl); 2788 2789 dev->pfc_state = ocrdma_is_enabled_and_synced(dcbxcfg.pfc_state); 2790 dev->sl = srvc_lvl; 2791 } 2792 2793 int ocrdma_alloc_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah) 2794 { 2795 int i; 2796 int status = -EINVAL; 2797 struct ocrdma_av *av; 2798 unsigned long flags; 2799 2800 av = dev->av_tbl.va; 2801 spin_lock_irqsave(&dev->av_tbl.lock, flags); 2802 for (i = 0; i < dev->av_tbl.num_ah; i++) { 2803 if (av->valid == 0) { 2804 av->valid = OCRDMA_AV_VALID; 2805 ah->av = av; 2806 ah->id = i; 2807 status = 0; 2808 break; 2809 } 2810 av++; 2811 } 2812 if (i == dev->av_tbl.num_ah) 2813 status = -EAGAIN; 2814 spin_unlock_irqrestore(&dev->av_tbl.lock, flags); 2815 return status; 2816 } 2817 2818 int ocrdma_free_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah) 2819 { 2820 unsigned long flags; 2821 spin_lock_irqsave(&dev->av_tbl.lock, flags); 2822 ah->av->valid = 0; 2823 spin_unlock_irqrestore(&dev->av_tbl.lock, flags); 2824 return 0; 2825 } 2826 2827 static int ocrdma_create_eqs(struct ocrdma_dev *dev) 2828 { 2829 int num_eq, i, status = 0; 2830 int irq; 2831 unsigned long flags = 0; 2832 2833 num_eq = dev->nic_info.msix.num_vectors - 2834 dev->nic_info.msix.start_vector; 2835 if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX) { 2836 num_eq = 1; 2837 flags = IRQF_SHARED; 2838 } else { 2839 num_eq = min_t(u32, num_eq, num_online_cpus()); 2840 } 2841 2842 if (!num_eq) 2843 return -EINVAL; 2844 2845 dev->eq_tbl = kzalloc(sizeof(struct ocrdma_eq) * num_eq, GFP_KERNEL); 2846 if (!dev->eq_tbl) 2847 return -ENOMEM; 2848 2849 for (i = 0; i < num_eq; i++) { 2850 status = ocrdma_create_eq(dev, &dev->eq_tbl[i], 2851 OCRDMA_EQ_LEN); 2852 if (status) { 2853 status = -EINVAL; 2854 break; 2855 } 2856 sprintf(dev->eq_tbl[i].irq_name, "ocrdma%d-%d", 2857 dev->id, i); 2858 irq = ocrdma_get_irq(dev, &dev->eq_tbl[i]); 2859 status = request_irq(irq, ocrdma_irq_handler, flags, 2860 dev->eq_tbl[i].irq_name, 2861 &dev->eq_tbl[i]); 2862 if (status) 2863 goto done; 2864 dev->eq_cnt += 1; 2865 } 2866 /* one eq is sufficient for data path to work */ 2867 return 0; 2868 done: 2869 ocrdma_destroy_eqs(dev); 2870 return status; 2871 } 2872 2873 int ocrdma_init_hw(struct ocrdma_dev *dev) 2874 { 2875 int status; 2876 2877 /* create the eqs */ 2878 status = ocrdma_create_eqs(dev); 2879 if (status) 2880 goto qpeq_err; 2881 status = ocrdma_create_mq(dev); 2882 if (status) 2883 goto mq_err; 2884 status = ocrdma_mbx_query_fw_config(dev); 2885 if (status) 2886 goto conf_err; 2887 status = ocrdma_mbx_query_dev(dev); 2888 if (status) 2889 goto conf_err; 2890 status = ocrdma_mbx_query_fw_ver(dev); 2891 if (status) 2892 goto conf_err; 2893 status = ocrdma_mbx_create_ah_tbl(dev); 2894 if (status) 2895 goto conf_err; 2896 status = ocrdma_mbx_get_phy_info(dev); 2897 if (status) 2898 goto info_attrb_err; 2899 status = ocrdma_mbx_get_ctrl_attribs(dev); 2900 if (status) 2901 goto info_attrb_err; 2902 2903 return 0; 2904 2905 info_attrb_err: 2906 ocrdma_mbx_delete_ah_tbl(dev); 2907 conf_err: 2908 ocrdma_destroy_mq(dev); 2909 mq_err: 2910 ocrdma_destroy_eqs(dev); 2911 qpeq_err: 2912 pr_err("%s() status=%d\n", __func__, status); 2913 return status; 2914 } 2915 2916 void ocrdma_cleanup_hw(struct ocrdma_dev *dev) 2917 { 2918 ocrdma_mbx_delete_ah_tbl(dev); 2919 2920 /* cleanup the eqs */ 2921 ocrdma_destroy_eqs(dev); 2922 2923 /* cleanup the control path */ 2924 ocrdma_destroy_mq(dev); 2925 } 2926