drivers/infiniband/hw/ocrdma/ocrdma.h

   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