1 /* This file is part of the Emulex RoCE Device Driver for 2 * RoCE (RDMA over Converged Ethernet) adapters. 3 * Copyright (C) 2012-2015 Emulex. All rights reserved. 4 * EMULEX and SLI are trademarks of Emulex. 5 * www.emulex.com 6 * 7 * This software is available to you under a choice of one of two licenses. 8 * You may choose to be licensed under the terms of the GNU General Public 9 * License (GPL) Version 2, available from the file COPYING in the main 10 * directory of this source tree, or the BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 16 * - Redistributions of source code must retain the above copyright notice, 17 * this list of conditions and the following disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in 21 * the documentation and/or other materials provided with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 31 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 32 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 * 35 * Contact Information: 36 * linux-drivers@emulex.com 37 * 38 * Emulex 39 * 3333 Susan Street 40 * Costa Mesa, CA 92626 41 */ 42 43 #ifndef __OCRDMA_H__ 44 #define __OCRDMA_H__ 45 46 #include <linux/mutex.h> 47 #include <linux/list.h> 48 #include <linux/spinlock.h> 49 #include <linux/pci.h> 50 51 #include <rdma/ib_verbs.h> 52 #include <rdma/ib_user_verbs.h> 53 #include <rdma/ib_addr.h> 54 55 #include <be_roce.h> 56 #include "ocrdma_sli.h" 57 58 #define OCRDMA_ROCE_DRV_VERSION "11.0.0.0" 59 60 #define OCRDMA_ROCE_DRV_DESC "Emulex OneConnect RoCE Driver" 61 #define OCRDMA_NODE_DESC "Emulex OneConnect RoCE HCA" 62 63 #define OC_NAME_SH OCRDMA_NODE_DESC "(Skyhawk)" 64 #define OC_NAME_UNKNOWN OCRDMA_NODE_DESC "(Unknown)" 65 66 #define OC_SKH_DEVICE_PF 0x720 67 #define OC_SKH_DEVICE_VF 0x728 68 #define OCRDMA_MAX_AH 512 69 70 #define OCRDMA_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME) 71 72 #define convert_to_64bit(lo, hi) ((u64)hi << 32 | (u64)lo) 73 #define EQ_INTR_PER_SEC_THRSH_HI 150000 74 #define EQ_INTR_PER_SEC_THRSH_LOW 100000 75 #define EQ_AIC_MAX_EQD 20 76 #define EQ_AIC_MIN_EQD 0 77 78 void ocrdma_eqd_set_task(struct work_struct *work); 79 80 struct ocrdma_dev_attr { 81 u8 fw_ver[32]; 82 u32 vendor_id; 83 u32 device_id; 84 u16 max_pd; 85 u16 max_dpp_pds; 86 u16 max_cq; 87 u16 max_cqe; 88 u16 max_qp; 89 u16 max_wqe; 90 u16 max_rqe; 91 u16 max_srq; 92 u32 max_inline_data; 93 int max_send_sge; 94 int max_recv_sge; 95 int max_srq_sge; 96 int max_rdma_sge; 97 int max_mr; 98 u64 max_mr_size; 99 u32 max_num_mr_pbl; 100 int max_mw; 101 int max_fmr; 102 int max_map_per_fmr; 103 int max_pages_per_frmr; 104 u16 max_ord_per_qp; 105 u16 max_ird_per_qp; 106 107 int device_cap_flags; 108 u8 cq_overflow_detect; 109 u8 srq_supported; 110 111 u32 wqe_size; 112 u32 rqe_size; 113 u32 ird_page_size; 114 u8 local_ca_ack_delay; 115 u8 ird; 116 u8 num_ird_pages; 117 u8 udp_encap; 118 }; 119 120 struct ocrdma_dma_mem { 121 void *va; 122 dma_addr_t pa; 123 u32 size; 124 }; 125 126 struct ocrdma_pbl { 127 void *va; 128 dma_addr_t pa; 129 }; 130 131 struct ocrdma_queue_info { 132 void *va; 133 dma_addr_t dma; 134 u32 size; 135 u16 len; 136 u16 entry_size; /* Size of an element in the queue */ 137 u16 id; /* qid, where to ring the doorbell. */ 138 u16 head, tail; 139 bool created; 140 }; 141 142 struct ocrdma_aic_obj { /* Adaptive interrupt coalescing (AIC) info */ 143 u32 prev_eqd; 144 u64 eq_intr_cnt; 145 u64 prev_eq_intr_cnt; 146 }; 147 148 struct ocrdma_eq { 149 struct ocrdma_queue_info q; 150 u32 vector; 151 int cq_cnt; 152 struct ocrdma_dev *dev; 153 char irq_name[32]; 154 struct ocrdma_aic_obj aic_obj; 155 }; 156 157 struct ocrdma_mq { 158 struct ocrdma_queue_info sq; 159 struct ocrdma_queue_info cq; 160 bool rearm_cq; 161 }; 162 163 struct mqe_ctx { 164 struct mutex lock; /* for serializing mailbox commands on MQ */ 165 wait_queue_head_t cmd_wait; 166 u32 tag; 167 u16 cqe_status; 168 u16 ext_status; 169 bool cmd_done; 170 bool fw_error_state; 171 }; 172 173 struct ocrdma_hw_mr { 174 u32 lkey; 175 u8 fr_mr; 176 u8 remote_atomic; 177 u8 remote_rd; 178 u8 remote_wr; 179 u8 local_rd; 180 u8 local_wr; 181 u8 mw_bind; 182 u8 rsvd; 183 u64 len; 184 struct ocrdma_pbl *pbl_table; 185 u32 num_pbls; 186 u32 num_pbes; 187 u32 pbl_size; 188 u32 pbe_size; 189 u64 fbo; 190 u64 va; 191 }; 192 193 struct ocrdma_mr { 194 struct ib_mr ibmr; 195 struct ib_umem *umem; 196 struct ocrdma_hw_mr hwmr; 197 u64 *pages; 198 u32 npages; 199 }; 200 201 struct ocrdma_stats { 202 u8 type; 203 struct ocrdma_dev *dev; 204 }; 205 206 struct ocrdma_pd_resource_mgr { 207 u32 pd_norm_start; 208 u16 pd_norm_count; 209 u16 pd_norm_thrsh; 210 u16 max_normal_pd; 211 u32 pd_dpp_start; 212 u16 pd_dpp_count; 213 u16 pd_dpp_thrsh; 214 u16 max_dpp_pd; 215 u16 dpp_page_index; 216 unsigned long *pd_norm_bitmap; 217 unsigned long *pd_dpp_bitmap; 218 bool pd_prealloc_valid; 219 }; 220 221 struct stats_mem { 222 struct ocrdma_mqe mqe; 223 void *va; 224 dma_addr_t pa; 225 u32 size; 226 char *debugfs_mem; 227 }; 228 229 struct phy_info { 230 u16 auto_speeds_supported; 231 u16 fixed_speeds_supported; 232 u16 phy_type; 233 u16 interface_type; 234 }; 235 236 enum ocrdma_flags { 237 OCRDMA_FLAGS_LINK_STATUS_INIT = 0x01 238 }; 239 240 struct ocrdma_dev { 241 struct ib_device ibdev; 242 struct ocrdma_dev_attr attr; 243 244 struct mutex dev_lock; /* provides syncronise access to device data */ 245 spinlock_t flush_q_lock ____cacheline_aligned; 246 247 struct ocrdma_cq **cq_tbl; 248 struct ocrdma_qp **qp_tbl; 249 250 struct ocrdma_eq *eq_tbl; 251 int eq_cnt; 252 struct delayed_work eqd_work; 253 u16 base_eqid; 254 u16 max_eq; 255 256 /* provided synchronization to sgid table for 257 * updating gid entries triggered by notifier. 258 */ 259 spinlock_t sgid_lock; 260 261 int gsi_qp_created; 262 struct ocrdma_cq *gsi_sqcq; 263 struct ocrdma_cq *gsi_rqcq; 264 265 struct { 266 struct ocrdma_av *va; 267 dma_addr_t pa; 268 u32 size; 269 u32 num_ah; 270 /* provide synchronization for av 271 * entry allocations. 272 */ 273 spinlock_t lock; 274 u32 ahid; 275 struct ocrdma_pbl pbl; 276 } av_tbl; 277 278 void *mbx_cmd; 279 struct ocrdma_mq mq; 280 struct mqe_ctx mqe_ctx; 281 282 struct be_dev_info nic_info; 283 struct phy_info phy; 284 char model_number[32]; 285 u32 hba_port_num; 286 287 struct list_head entry; 288 int id; 289 u64 *stag_arr; 290 u8 sl; /* service level */ 291 bool pfc_state; 292 atomic_t update_sl; 293 u16 pvid; 294 u32 asic_id; 295 u32 flags; 296 297 ulong last_stats_time; 298 struct mutex stats_lock; /* provide synch for debugfs operations */ 299 struct stats_mem stats_mem; 300 struct ocrdma_stats rsrc_stats; 301 struct ocrdma_stats rx_stats; 302 struct ocrdma_stats wqe_stats; 303 struct ocrdma_stats tx_stats; 304 struct ocrdma_stats db_err_stats; 305 struct ocrdma_stats tx_qp_err_stats; 306 struct ocrdma_stats rx_qp_err_stats; 307 struct ocrdma_stats tx_dbg_stats; 308 struct ocrdma_stats rx_dbg_stats; 309 struct ocrdma_stats driver_stats; 310 struct ocrdma_stats reset_stats; 311 struct dentry *dir; 312 atomic_t async_err_stats[OCRDMA_MAX_ASYNC_ERRORS]; 313 atomic_t cqe_err_stats[OCRDMA_MAX_CQE_ERR]; 314 struct ocrdma_pd_resource_mgr *pd_mgr; 315 }; 316 317 struct ocrdma_cq { 318 struct ib_cq ibcq; 319 struct ocrdma_cqe *va; 320 u32 phase; 321 u32 getp; /* pointer to pending wrs to 322 * return to stack, wrap arounds 323 * at max_hw_cqe 324 */ 325 u32 max_hw_cqe; 326 bool phase_change; 327 spinlock_t cq_lock ____cacheline_aligned; /* provide synchronization 328 * to cq polling 329 */ 330 /* syncronizes cq completion handler invoked from multiple context */ 331 spinlock_t comp_handler_lock ____cacheline_aligned; 332 u16 id; 333 u16 eqn; 334 335 struct ocrdma_ucontext *ucontext; 336 dma_addr_t pa; 337 u32 len; 338 u32 cqe_cnt; 339 340 /* head of all qp's sq and rq for which cqes need to be flushed 341 * by the software. 342 */ 343 struct list_head sq_head, rq_head; 344 }; 345 346 struct ocrdma_pd { 347 struct ib_pd ibpd; 348 struct ocrdma_ucontext *uctx; 349 u32 id; 350 int num_dpp_qp; 351 u32 dpp_page; 352 bool dpp_enabled; 353 }; 354 355 struct ocrdma_ah { 356 struct ib_ah ibah; 357 struct ocrdma_av *av; 358 u16 sgid_index; 359 u32 id; 360 u8 hdr_type; 361 }; 362 363 struct ocrdma_qp_hwq_info { 364 u8 *va; /* virtual address */ 365 u32 max_sges; 366 u32 head, tail; 367 u32 entry_size; 368 u32 max_cnt; 369 u32 max_wqe_idx; 370 u16 dbid; /* qid, where to ring the doorbell. */ 371 u32 len; 372 dma_addr_t pa; 373 }; 374 375 struct ocrdma_srq { 376 struct ib_srq ibsrq; 377 u8 __iomem *db; 378 struct ocrdma_qp_hwq_info rq; 379 u64 *rqe_wr_id_tbl; 380 u32 *idx_bit_fields; 381 u32 bit_fields_len; 382 383 /* provide synchronization to multiple context(s) posting rqe */ 384 spinlock_t q_lock ____cacheline_aligned; 385 386 struct ocrdma_pd *pd; 387 u32 id; 388 }; 389 390 struct ocrdma_qp { 391 struct ib_qp ibqp; 392 393 u8 __iomem *sq_db; 394 struct ocrdma_qp_hwq_info sq; 395 struct { 396 uint64_t wrid; 397 uint16_t dpp_wqe_idx; 398 uint16_t dpp_wqe; 399 uint8_t signaled; 400 uint8_t rsvd[3]; 401 } *wqe_wr_id_tbl; 402 u32 max_inline_data; 403 404 /* provide synchronization to multiple context(s) posting wqe, rqe */ 405 spinlock_t q_lock ____cacheline_aligned; 406 struct ocrdma_cq *sq_cq; 407 /* list maintained per CQ to flush SQ errors */ 408 struct list_head sq_entry; 409 410 u8 __iomem *rq_db; 411 struct ocrdma_qp_hwq_info rq; 412 u64 *rqe_wr_id_tbl; 413 struct ocrdma_cq *rq_cq; 414 struct ocrdma_srq *srq; 415 /* list maintained per CQ to flush RQ errors */ 416 struct list_head rq_entry; 417 418 enum ocrdma_qp_state state; /* QP state */ 419 int cap_flags; 420 u32 max_ord, max_ird; 421 422 u32 id; 423 struct ocrdma_pd *pd; 424 425 enum ib_qp_type qp_type; 426 427 int sgid_idx; 428 u32 qkey; 429 bool dpp_enabled; 430 u8 *ird_q_va; 431 bool signaled; 432 }; 433 434 struct ocrdma_ucontext { 435 struct ib_ucontext ibucontext; 436 437 struct list_head mm_head; 438 struct mutex mm_list_lock; /* protects list entries of mm type */ 439 struct ocrdma_pd *cntxt_pd; 440 int pd_in_use; 441 442 struct { 443 u32 *va; 444 dma_addr_t pa; 445 u32 len; 446 } ah_tbl; 447 }; 448 449 struct ocrdma_mm { 450 struct { 451 u64 phy_addr; 452 unsigned long len; 453 } key; 454 struct list_head entry; 455 }; 456 457 static inline struct ocrdma_dev *get_ocrdma_dev(struct ib_device *ibdev) 458 { 459 return container_of(ibdev, struct ocrdma_dev, ibdev); 460 } 461 462 static inline struct ocrdma_ucontext *get_ocrdma_ucontext(struct ib_ucontext 463 *ibucontext) 464 { 465 return container_of(ibucontext, struct ocrdma_ucontext, ibucontext); 466 } 467 468 static inline struct ocrdma_pd *get_ocrdma_pd(struct ib_pd *ibpd) 469 { 470 return container_of(ibpd, struct ocrdma_pd, ibpd); 471 } 472 473 static inline struct ocrdma_cq *get_ocrdma_cq(struct ib_cq *ibcq) 474 { 475 return container_of(ibcq, struct ocrdma_cq, ibcq); 476 } 477 478 static inline struct ocrdma_qp *get_ocrdma_qp(struct ib_qp *ibqp) 479 { 480 return container_of(ibqp, struct ocrdma_qp, ibqp); 481 } 482 483 static inline struct ocrdma_mr *get_ocrdma_mr(struct ib_mr *ibmr) 484 { 485 return container_of(ibmr, struct ocrdma_mr, ibmr); 486 } 487 488 static inline struct ocrdma_ah *get_ocrdma_ah(struct ib_ah *ibah) 489 { 490 return container_of(ibah, struct ocrdma_ah, ibah); 491 } 492 493 static inline struct ocrdma_srq *get_ocrdma_srq(struct ib_srq *ibsrq) 494 { 495 return container_of(ibsrq, struct ocrdma_srq, ibsrq); 496 } 497 498 static inline int is_cqe_valid(struct ocrdma_cq *cq, struct ocrdma_cqe *cqe) 499 { 500 int cqe_valid; 501 cqe_valid = le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_VALID; 502 return (cqe_valid == cq->phase); 503 } 504 505 static inline int is_cqe_for_sq(struct ocrdma_cqe *cqe) 506 { 507 return (le32_to_cpu(cqe->flags_status_srcqpn) & 508 OCRDMA_CQE_QTYPE) ? 0 : 1; 509 } 510 511 static inline int is_cqe_invalidated(struct ocrdma_cqe *cqe) 512 { 513 return (le32_to_cpu(cqe->flags_status_srcqpn) & 514 OCRDMA_CQE_INVALIDATE) ? 1 : 0; 515 } 516 517 static inline int is_cqe_imm(struct ocrdma_cqe *cqe) 518 { 519 return (le32_to_cpu(cqe->flags_status_srcqpn) & 520 OCRDMA_CQE_IMM) ? 1 : 0; 521 } 522 523 static inline int is_cqe_wr_imm(struct ocrdma_cqe *cqe) 524 { 525 return (le32_to_cpu(cqe->flags_status_srcqpn) & 526 OCRDMA_CQE_WRITE_IMM) ? 1 : 0; 527 } 528 529 static inline int ocrdma_resolve_dmac(struct ocrdma_dev *dev, 530 struct rdma_ah_attr *ah_attr, u8 *mac_addr) 531 { 532 struct in6_addr in6; 533 534 memcpy(&in6, rdma_ah_read_grh(ah_attr)->dgid.raw, sizeof(in6)); 535 if (rdma_is_multicast_addr(&in6)) 536 rdma_get_mcast_mac(&in6, mac_addr); 537 else if (rdma_link_local_addr(&in6)) 538 rdma_get_ll_mac(&in6, mac_addr); 539 else 540 memcpy(mac_addr, ah_attr->roce.dmac, ETH_ALEN); 541 return 0; 542 } 543 544 static inline char *hca_name(struct ocrdma_dev *dev) 545 { 546 switch (dev->nic_info.pdev->device) { 547 case OC_SKH_DEVICE_PF: 548 case OC_SKH_DEVICE_VF: 549 return OC_NAME_SH; 550 default: 551 return OC_NAME_UNKNOWN; 552 } 553 } 554 555 static inline int ocrdma_get_eq_table_index(struct ocrdma_dev *dev, 556 int eqid) 557 { 558 int indx; 559 560 for (indx = 0; indx < dev->eq_cnt; indx++) { 561 if (dev->eq_tbl[indx].q.id == eqid) 562 return indx; 563 } 564 565 return -EINVAL; 566 } 567 568 static inline u8 ocrdma_get_asic_type(struct ocrdma_dev *dev) 569 { 570 if (dev->nic_info.dev_family == 0xF && !dev->asic_id) { 571 pci_read_config_dword( 572 dev->nic_info.pdev, 573 OCRDMA_SLI_ASIC_ID_OFFSET, &dev->asic_id); 574 } 575 576 return (dev->asic_id & OCRDMA_SLI_ASIC_GEN_NUM_MASK) >> 577 OCRDMA_SLI_ASIC_GEN_NUM_SHIFT; 578 } 579 580 static inline u8 ocrdma_get_pfc_prio(u8 *pfc, u8 prio) 581 { 582 return *(pfc + prio); 583 } 584 585 static inline u8 ocrdma_get_app_prio(u8 *app_prio, u8 prio) 586 { 587 return *(app_prio + prio); 588 } 589 590 static inline u8 ocrdma_is_enabled_and_synced(u32 state) 591 { /* May also be used to interpret TC-state, QCN-state 592 * Appl-state and Logical-link-state in future. 593 */ 594 return (state & OCRDMA_STATE_FLAG_ENABLED) && 595 (state & OCRDMA_STATE_FLAG_SYNC); 596 } 597 598 static inline u8 ocrdma_get_ae_link_state(u32 ae_state) 599 { 600 return ((ae_state & OCRDMA_AE_LSC_LS_MASK) >> OCRDMA_AE_LSC_LS_SHIFT); 601 } 602 603 static inline bool ocrdma_is_udp_encap_supported(struct ocrdma_dev *dev) 604 { 605 return (dev->attr.udp_encap & OCRDMA_L3_TYPE_IPV4) || 606 (dev->attr.udp_encap & OCRDMA_L3_TYPE_IPV6); 607 } 608 609 #endif 610