1 /******************************************************************* 2 * This file is part of the Emulex RoCE Device Driver for * 3 * RoCE (RDMA over Converged Ethernet) 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 #ifndef __OCRDMA_H__ 29 #define __OCRDMA_H__ 30 31 #include <linux/mutex.h> 32 #include <linux/list.h> 33 #include <linux/spinlock.h> 34 #include <linux/pci.h> 35 36 #include <rdma/ib_verbs.h> 37 #include <rdma/ib_user_verbs.h> 38 39 #include <be_roce.h> 40 #include "ocrdma_sli.h" 41 42 #define OCRDMA_ROCE_DEV_VERSION "1.0.0" 43 #define OCRDMA_NODE_DESC "Emulex OneConnect RoCE HCA" 44 45 #define ocrdma_err(format, arg...) printk(KERN_ERR format, ##arg) 46 47 #define OCRDMA_MAX_AH 512 48 49 #define OCRDMA_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME) 50 51 struct ocrdma_dev_attr { 52 u8 fw_ver[32]; 53 u32 vendor_id; 54 u32 device_id; 55 u16 max_pd; 56 u16 max_cq; 57 u16 max_cqe; 58 u16 max_qp; 59 u16 max_wqe; 60 u16 max_rqe; 61 u32 max_inline_data; 62 int max_send_sge; 63 int max_recv_sge; 64 int max_srq_sge; 65 int max_mr; 66 u64 max_mr_size; 67 u32 max_num_mr_pbl; 68 int max_fmr; 69 int max_map_per_fmr; 70 int max_pages_per_frmr; 71 u16 max_ord_per_qp; 72 u16 max_ird_per_qp; 73 74 int device_cap_flags; 75 u8 cq_overflow_detect; 76 u8 srq_supported; 77 78 u32 wqe_size; 79 u32 rqe_size; 80 u32 ird_page_size; 81 u8 local_ca_ack_delay; 82 u8 ird; 83 u8 num_ird_pages; 84 }; 85 86 struct ocrdma_pbl { 87 void *va; 88 dma_addr_t pa; 89 }; 90 91 struct ocrdma_queue_info { 92 void *va; 93 dma_addr_t dma; 94 u32 size; 95 u16 len; 96 u16 entry_size; /* Size of an element in the queue */ 97 u16 id; /* qid, where to ring the doorbell. */ 98 u16 head, tail; 99 bool created; 100 atomic_t used; /* Number of valid elements in the queue */ 101 }; 102 103 struct ocrdma_eq { 104 struct ocrdma_queue_info q; 105 u32 vector; 106 int cq_cnt; 107 struct ocrdma_dev *dev; 108 char irq_name[32]; 109 }; 110 111 struct ocrdma_mq { 112 struct ocrdma_queue_info sq; 113 struct ocrdma_queue_info cq; 114 bool rearm_cq; 115 }; 116 117 struct mqe_ctx { 118 struct mutex lock; /* for serializing mailbox commands on MQ */ 119 wait_queue_head_t cmd_wait; 120 u32 tag; 121 u16 cqe_status; 122 u16 ext_status; 123 bool cmd_done; 124 }; 125 126 struct ocrdma_dev { 127 struct ib_device ibdev; 128 struct ocrdma_dev_attr attr; 129 130 struct mutex dev_lock; /* provides syncronise access to device data */ 131 spinlock_t flush_q_lock ____cacheline_aligned; 132 133 struct ocrdma_cq **cq_tbl; 134 struct ocrdma_qp **qp_tbl; 135 136 struct ocrdma_eq meq; 137 struct ocrdma_eq *qp_eq_tbl; 138 int eq_cnt; 139 u16 base_eqid; 140 u16 max_eq; 141 142 union ib_gid *sgid_tbl; 143 /* provided synchronization to sgid table for 144 * updating gid entries triggered by notifier. 145 */ 146 spinlock_t sgid_lock; 147 148 int gsi_qp_created; 149 struct ocrdma_cq *gsi_sqcq; 150 struct ocrdma_cq *gsi_rqcq; 151 152 struct { 153 struct ocrdma_av *va; 154 dma_addr_t pa; 155 u32 size; 156 u32 num_ah; 157 /* provide synchronization for av 158 * entry allocations. 159 */ 160 spinlock_t lock; 161 u32 ahid; 162 struct ocrdma_pbl pbl; 163 } av_tbl; 164 165 void *mbx_cmd; 166 struct ocrdma_mq mq; 167 struct mqe_ctx mqe_ctx; 168 169 struct be_dev_info nic_info; 170 171 struct list_head entry; 172 struct rcu_head rcu; 173 int id; 174 }; 175 176 struct ocrdma_cq { 177 struct ib_cq ibcq; 178 struct ocrdma_dev *dev; 179 struct ocrdma_cqe *va; 180 u32 phase; 181 u32 getp; /* pointer to pending wrs to 182 * return to stack, wrap arounds 183 * at max_hw_cqe 184 */ 185 u32 max_hw_cqe; 186 bool phase_change; 187 bool armed, solicited; 188 bool arm_needed; 189 190 spinlock_t cq_lock ____cacheline_aligned; /* provide synchronization 191 * to cq polling 192 */ 193 /* syncronizes cq completion handler invoked from multiple context */ 194 spinlock_t comp_handler_lock ____cacheline_aligned; 195 u16 id; 196 u16 eqn; 197 198 struct ocrdma_ucontext *ucontext; 199 dma_addr_t pa; 200 u32 len; 201 atomic_t use_cnt; 202 203 /* head of all qp's sq and rq for which cqes need to be flushed 204 * by the software. 205 */ 206 struct list_head sq_head, rq_head; 207 }; 208 209 struct ocrdma_pd { 210 struct ib_pd ibpd; 211 struct ocrdma_dev *dev; 212 struct ocrdma_ucontext *uctx; 213 atomic_t use_cnt; 214 u32 id; 215 int num_dpp_qp; 216 u32 dpp_page; 217 bool dpp_enabled; 218 }; 219 220 struct ocrdma_ah { 221 struct ib_ah ibah; 222 struct ocrdma_dev *dev; 223 struct ocrdma_av *av; 224 u16 sgid_index; 225 u32 id; 226 }; 227 228 struct ocrdma_qp_hwq_info { 229 u8 *va; /* virtual address */ 230 u32 max_sges; 231 u32 head, tail; 232 u32 entry_size; 233 u32 max_cnt; 234 u32 max_wqe_idx; 235 u16 dbid; /* qid, where to ring the doorbell. */ 236 u32 len; 237 dma_addr_t pa; 238 }; 239 240 struct ocrdma_srq { 241 struct ib_srq ibsrq; 242 struct ocrdma_dev *dev; 243 u8 __iomem *db; 244 /* provide synchronization to multiple context(s) posting rqe */ 245 spinlock_t q_lock ____cacheline_aligned; 246 247 struct ocrdma_qp_hwq_info rq; 248 struct ocrdma_pd *pd; 249 atomic_t use_cnt; 250 u32 id; 251 u64 *rqe_wr_id_tbl; 252 u32 *idx_bit_fields; 253 u32 bit_fields_len; 254 }; 255 256 struct ocrdma_qp { 257 struct ib_qp ibqp; 258 struct ocrdma_dev *dev; 259 260 u8 __iomem *sq_db; 261 /* provide synchronization to multiple context(s) posting wqe, rqe */ 262 spinlock_t q_lock ____cacheline_aligned; 263 struct ocrdma_qp_hwq_info sq; 264 struct { 265 uint64_t wrid; 266 uint16_t dpp_wqe_idx; 267 uint16_t dpp_wqe; 268 uint8_t signaled; 269 uint8_t rsvd[3]; 270 } *wqe_wr_id_tbl; 271 u32 max_inline_data; 272 struct ocrdma_cq *sq_cq; 273 /* list maintained per CQ to flush SQ errors */ 274 struct list_head sq_entry; 275 276 u8 __iomem *rq_db; 277 struct ocrdma_qp_hwq_info rq; 278 u64 *rqe_wr_id_tbl; 279 struct ocrdma_cq *rq_cq; 280 struct ocrdma_srq *srq; 281 /* list maintained per CQ to flush RQ errors */ 282 struct list_head rq_entry; 283 284 enum ocrdma_qp_state state; /* QP state */ 285 int cap_flags; 286 u32 max_ord, max_ird; 287 288 u32 id; 289 struct ocrdma_pd *pd; 290 291 enum ib_qp_type qp_type; 292 293 int sgid_idx; 294 u32 qkey; 295 bool dpp_enabled; 296 u8 *ird_q_va; 297 }; 298 299 #define OCRDMA_GET_NUM_POSTED_SHIFT_VAL(qp) \ 300 (((qp->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) && \ 301 (qp->id < 64)) ? 24 : 16) 302 303 struct ocrdma_hw_mr { 304 struct ocrdma_dev *dev; 305 u32 lkey; 306 u8 fr_mr; 307 u8 remote_atomic; 308 u8 remote_rd; 309 u8 remote_wr; 310 u8 local_rd; 311 u8 local_wr; 312 u8 mw_bind; 313 u8 rsvd; 314 u64 len; 315 struct ocrdma_pbl *pbl_table; 316 u32 num_pbls; 317 u32 num_pbes; 318 u32 pbl_size; 319 u32 pbe_size; 320 u64 fbo; 321 u64 va; 322 }; 323 324 struct ocrdma_mr { 325 struct ib_mr ibmr; 326 struct ib_umem *umem; 327 struct ocrdma_hw_mr hwmr; 328 struct ocrdma_pd *pd; 329 }; 330 331 struct ocrdma_ucontext { 332 struct ib_ucontext ibucontext; 333 struct ocrdma_dev *dev; 334 335 struct list_head mm_head; 336 struct mutex mm_list_lock; /* protects list entries of mm type */ 337 struct { 338 u32 *va; 339 dma_addr_t pa; 340 u32 len; 341 } ah_tbl; 342 }; 343 344 struct ocrdma_mm { 345 struct { 346 u64 phy_addr; 347 unsigned long len; 348 } key; 349 struct list_head entry; 350 }; 351 352 static inline struct ocrdma_dev *get_ocrdma_dev(struct ib_device *ibdev) 353 { 354 return container_of(ibdev, struct ocrdma_dev, ibdev); 355 } 356 357 static inline struct ocrdma_ucontext *get_ocrdma_ucontext(struct ib_ucontext 358 *ibucontext) 359 { 360 return container_of(ibucontext, struct ocrdma_ucontext, ibucontext); 361 } 362 363 static inline struct ocrdma_pd *get_ocrdma_pd(struct ib_pd *ibpd) 364 { 365 return container_of(ibpd, struct ocrdma_pd, ibpd); 366 } 367 368 static inline struct ocrdma_cq *get_ocrdma_cq(struct ib_cq *ibcq) 369 { 370 return container_of(ibcq, struct ocrdma_cq, ibcq); 371 } 372 373 static inline struct ocrdma_qp *get_ocrdma_qp(struct ib_qp *ibqp) 374 { 375 return container_of(ibqp, struct ocrdma_qp, ibqp); 376 } 377 378 static inline struct ocrdma_mr *get_ocrdma_mr(struct ib_mr *ibmr) 379 { 380 return container_of(ibmr, struct ocrdma_mr, ibmr); 381 } 382 383 static inline struct ocrdma_ah *get_ocrdma_ah(struct ib_ah *ibah) 384 { 385 return container_of(ibah, struct ocrdma_ah, ibah); 386 } 387 388 static inline struct ocrdma_srq *get_ocrdma_srq(struct ib_srq *ibsrq) 389 { 390 return container_of(ibsrq, struct ocrdma_srq, ibsrq); 391 } 392 393 #endif 394