include/linux/mlx4/qp.h

   1 /*
   2  * Copyright (c) 2007 Cisco Systems, Inc.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #ifndef MLX4_QP_H
  34 #define MLX4_QP_H
  35
  36 #include <linux/types.h>
  37
  38 #include <linux/mlx4/device.h>
  39
  40 #define MLX4_INVALID_LKEY       0x100
  41
  42 enum mlx4_qp_optpar {
  43         MLX4_QP_OPTPAR_ALT_ADDR_PATH            = 1 << 0,
  44         MLX4_QP_OPTPAR_RRE                      = 1 << 1,
  45         MLX4_QP_OPTPAR_RAE                      = 1 << 2,
  46         MLX4_QP_OPTPAR_RWE                      = 1 << 3,
  47         MLX4_QP_OPTPAR_PKEY_INDEX               = 1 << 4,
  48         MLX4_QP_OPTPAR_Q_KEY                    = 1 << 5,
  49         MLX4_QP_OPTPAR_RNR_TIMEOUT              = 1 << 6,
  50         MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH        = 1 << 7,
  51         MLX4_QP_OPTPAR_SRA_MAX                  = 1 << 8,
  52         MLX4_QP_OPTPAR_RRA_MAX                  = 1 << 9,
  53         MLX4_QP_OPTPAR_PM_STATE                 = 1 << 10,
  54         MLX4_QP_OPTPAR_RETRY_COUNT              = 1 << 12,
  55         MLX4_QP_OPTPAR_RNR_RETRY                = 1 << 13,
  56         MLX4_QP_OPTPAR_ACK_TIMEOUT              = 1 << 14,
  57         MLX4_QP_OPTPAR_SCHED_QUEUE              = 1 << 16,
  58         MLX4_QP_OPTPAR_COUNTER_INDEX            = 1 << 20
  59 };
  60
  61 enum mlx4_qp_state {
  62         MLX4_QP_STATE_RST                       = 0,
  63         MLX4_QP_STATE_INIT                      = 1,
  64         MLX4_QP_STATE_RTR                       = 2,
  65         MLX4_QP_STATE_RTS                       = 3,
  66         MLX4_QP_STATE_SQER                      = 4,
  67         MLX4_QP_STATE_SQD                       = 5,
  68         MLX4_QP_STATE_ERR                       = 6,
  69         MLX4_QP_STATE_SQ_DRAINING               = 7,
  70         MLX4_QP_NUM_STATE
  71 };
  72
  73 enum {
  74         MLX4_QP_ST_RC                           = 0x0,
  75         MLX4_QP_ST_UC                           = 0x1,
  76         MLX4_QP_ST_RD                           = 0x2,
  77         MLX4_QP_ST_UD                           = 0x3,
  78         MLX4_QP_ST_XRC                          = 0x6,
  79         MLX4_QP_ST_MLX                          = 0x7
  80 };
  81
  82 enum {
  83         MLX4_QP_PM_MIGRATED                     = 0x3,
  84         MLX4_QP_PM_ARMED                        = 0x0,
  85         MLX4_QP_PM_REARM                        = 0x1
  86 };
  87
  88 enum {
  89         /* params1 */
  90         MLX4_QP_BIT_SRE                         = 1 << 15,
  91         MLX4_QP_BIT_SWE                         = 1 << 14,
  92         MLX4_QP_BIT_SAE                         = 1 << 13,
  93         /* params2 */
  94         MLX4_QP_BIT_RRE                         = 1 << 15,
  95         MLX4_QP_BIT_RWE                         = 1 << 14,
  96         MLX4_QP_BIT_RAE                         = 1 << 13,
  97         MLX4_QP_BIT_RIC                         = 1 <<  4,
  98 };
  99
 100 enum {
 101         MLX4_RSS_HASH_XOR                       = 0,
 102         MLX4_RSS_HASH_TOP                       = 1,
 103
 104         MLX4_RSS_UDP_IPV6                       = 1 << 0,
 105         MLX4_RSS_UDP_IPV4                       = 1 << 1,
 106         MLX4_RSS_TCP_IPV6                       = 1 << 2,
 107         MLX4_RSS_IPV6                           = 1 << 3,
 108         MLX4_RSS_TCP_IPV4                       = 1 << 4,
 109         MLX4_RSS_IPV4                           = 1 << 5,
 110
 111         /* offset of mlx4_rss_context within mlx4_qp_context.pri_path */
 112         MLX4_RSS_OFFSET_IN_QPC_PRI_PATH         = 0x24,
 113         /* offset of being RSS indirection QP within mlx4_qp_context.flags */
 114         MLX4_RSS_QPC_FLAG_OFFSET                = 13,
 115 };
 116
 117 struct mlx4_rss_context {
 118         __be32                  base_qpn;
 119         __be32                  default_qpn;
 120         u16                     reserved;
 121         u8                      hash_fn;
 122         u8                      flags;
 123         __be32                  rss_key[10];
 124         __be32                  base_qpn_udp;
 125 };
 126
 127 struct mlx4_qp_path {
 128         u8                      fl;
 129         u8                      reserved1[2];
 130         u8                      pkey_index;
 131         u8                      counter_index;
 132         u8                      grh_mylmc;
 133         __be16                  rlid;
 134         u8                      ackto;
 135         u8                      mgid_index;
 136         u8                      static_rate;
 137         u8                      hop_limit;
 138         __be32                  tclass_flowlabel;
 139         u8                      rgid[16];
 140         u8                      sched_queue;
 141         u8                      vlan_index;
 142         u8                      reserved3[2];
 143         u8                      reserved4[2];
 144         u8                      dmac[6];
 145 };
 146
 147 struct mlx4_qp_context {
 148         __be32                  flags;
 149         __be32                  pd;
 150         u8                      mtu_msgmax;
 151         u8                      rq_size_stride;
 152         u8                      sq_size_stride;
 153         u8                      rlkey;
 154         __be32                  usr_page;
 155         __be32                  local_qpn;
 156         __be32                  remote_qpn;
 157         struct                  mlx4_qp_path pri_path;
 158         struct                  mlx4_qp_path alt_path;
 159         __be32                  params1;
 160         u32                     reserved1;
 161         __be32                  next_send_psn;
 162         __be32                  cqn_send;
 163         u32                     reserved2[2];
 164         __be32                  last_acked_psn;
 165         __be32                  ssn;
 166         __be32                  params2;
 167         __be32                  rnr_nextrecvpsn;
 168         __be32                  xrcd;
 169         __be32                  cqn_recv;
 170         __be64                  db_rec_addr;
 171         __be32                  qkey;
 172         __be32                  srqn;
 173         __be32                  msn;
 174         __be16                  rq_wqe_counter;
 175         __be16                  sq_wqe_counter;
 176         u32                     reserved3[2];
 177         __be32                  param3;
 178         __be32                  nummmcpeers_basemkey;
 179         u8                      log_page_size;
 180         u8                      reserved4[2];
 181         u8                      mtt_base_addr_h;
 182         __be32                  mtt_base_addr_l;
 183         u32                     reserved5[10];
 184 };
 185
 186 /* Which firmware version adds support for NEC (NoErrorCompletion) bit */
 187 #define MLX4_FW_VER_WQE_CTRL_NEC mlx4_fw_ver(2, 2, 232)
 188
 189 enum {
 190         MLX4_WQE_CTRL_NEC               = 1 << 29,
 191         MLX4_WQE_CTRL_FENCE             = 1 << 6,
 192         MLX4_WQE_CTRL_CQ_UPDATE         = 3 << 2,
 193         MLX4_WQE_CTRL_SOLICITED         = 1 << 1,
 194         MLX4_WQE_CTRL_IP_CSUM           = 1 << 4,
 195         MLX4_WQE_CTRL_TCP_UDP_CSUM      = 1 << 5,
 196         MLX4_WQE_CTRL_INS_VLAN          = 1 << 6,
 197         MLX4_WQE_CTRL_STRONG_ORDER      = 1 << 7,
 198         MLX4_WQE_CTRL_FORCE_LOOPBACK    = 1 << 0,
 199 };
 200
 201 struct mlx4_wqe_ctrl_seg {
 202         __be32                  owner_opcode;
 203         __be16                  vlan_tag;
 204         u8                      ins_vlan;
 205         u8                      fence_size;
 206         /*
 207          * High 24 bits are SRC remote buffer; low 8 bits are flags:
 208          * [7]   SO (strong ordering)
 209          * [5]   TCP/UDP checksum
 210          * [4]   IP checksum
 211          * [3:2] C (generate completion queue entry)
 212          * [1]   SE (solicited event)
 213          * [0]   FL (force loopback)
 214          */
 215         union {
 216                 __be32                  srcrb_flags;
 217                 __be16                  srcrb_flags16[2];
 218         };
 219         /*
 220          * imm is immediate data for send/RDMA write w/ immediate;
 221          * also invalidation key for send with invalidate; input
 222          * modifier for WQEs on CCQs.
 223          */
 224         __be32                  imm;
 225 };
 226
 227 enum {
 228         MLX4_WQE_MLX_VL15       = 1 << 17,
 229         MLX4_WQE_MLX_SLR        = 1 << 16
 230 };
 231
 232 struct mlx4_wqe_mlx_seg {
 233         u8                      owner;
 234         u8                      reserved1[2];
 235         u8                      opcode;
 236         __be16                  sched_prio;
 237         u8                      reserved2;
 238         u8                      size;
 239         /*
 240          * [17]    VL15
 241          * [16]    SLR
 242          * [15:12] static rate
 243          * [11:8]  SL
 244          * [4]     ICRC
 245          * [3:2]   C
 246          * [0]     FL (force loopback)
 247          */
 248         __be32                  flags;
 249         __be16                  rlid;
 250         u16                     reserved3;
 251 };
 252
 253 struct mlx4_wqe_datagram_seg {
 254         __be32                  av[8];
 255         __be32                  dqpn;
 256         __be32                  qkey;
 257         __be16                  vlan;
 258         u8                      mac[6];
 259 };
 260
 261 struct mlx4_wqe_lso_seg {
 262         __be32                  mss_hdr_size;
 263         __be32                  header[0];
 264 };
 265
 266 struct mlx4_wqe_bind_seg {
 267         __be32                  flags1;
 268         __be32                  flags2;
 269         __be32                  new_rkey;
 270         __be32                  lkey;
 271         __be64                  addr;
 272         __be64                  length;
 273 };
 274
 275 enum {
 276         MLX4_WQE_FMR_PERM_LOCAL_READ    = 1 << 27,
 277         MLX4_WQE_FMR_PERM_LOCAL_WRITE   = 1 << 28,
 278         MLX4_WQE_FMR_PERM_REMOTE_READ   = 1 << 29,
 279         MLX4_WQE_FMR_PERM_REMOTE_WRITE  = 1 << 30,
 280         MLX4_WQE_FMR_PERM_ATOMIC        = 1 << 31
 281 };
 282
 283 struct mlx4_wqe_fmr_seg {
 284         __be32                  flags;
 285         __be32                  mem_key;
 286         __be64                  buf_list;
 287         __be64                  start_addr;
 288         __be64                  reg_len;
 289         __be32                  offset;
 290         __be32                  page_size;
 291         u32                     reserved[2];
 292 };
 293
 294 struct mlx4_wqe_fmr_ext_seg {
 295         u8                      flags;
 296         u8                      reserved;
 297         __be16                  app_mask;
 298         __be16                  wire_app_tag;
 299         __be16                  mem_app_tag;
 300         __be32                  wire_ref_tag_base;
 301         __be32                  mem_ref_tag_base;
 302 };
 303
 304 struct mlx4_wqe_local_inval_seg {
 305         __be32                  flags;
 306         u32                     reserved1;
 307         __be32                  mem_key;
 308         u32                     reserved2[2];
 309         __be32                  guest_id;
 310         __be64                  pa;
 311 };
 312
 313 struct mlx4_wqe_raddr_seg {
 314         __be64                  raddr;
 315         __be32                  rkey;
 316         u32                     reserved;
 317 };
 318
 319 struct mlx4_wqe_atomic_seg {
 320         __be64                  swap_add;
 321         __be64                  compare;
 322 };
 323
 324 struct mlx4_wqe_masked_atomic_seg {
 325         __be64                  swap_add;
 326         __be64                  compare;
 327         __be64                  swap_add_mask;
 328         __be64                  compare_mask;
 329 };
 330
 331 struct mlx4_wqe_data_seg {
 332         __be32                  byte_count;
 333         __be32                  lkey;
 334         __be64                  addr;
 335 };
 336
 337 enum {
 338         MLX4_INLINE_ALIGN       = 64,
 339         MLX4_INLINE_SEG         = 1 << 31,
 340 };
 341
 342 struct mlx4_wqe_inline_seg {
 343         __be32                  byte_count;
 344 };
 345
 346 int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
 347                    enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state,
 348                    struct mlx4_qp_context *context, enum mlx4_qp_optpar optpar,
 349                    int sqd_event, struct mlx4_qp *qp);
 350
 351 int mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp,
 352                   struct mlx4_qp_context *context);
 353
 354 int mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
 355                      struct mlx4_qp_context *context,
 356                      struct mlx4_qp *qp, enum mlx4_qp_state *qp_state);
 357
 358 static inline struct mlx4_qp *__mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn)
 359 {
 360         return radix_tree_lookup(&dev->qp_table_tree, qpn & (dev->caps.num_qps - 1));
 361 }
 362
 363 void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp);
 364
 365 #endif /* MLX4_QP_H */