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   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 };
  59
  60 enum mlx4_qp_state {
  61         MLX4_QP_STATE_RST                       = 0,
  62         MLX4_QP_STATE_INIT                      = 1,
  63         MLX4_QP_STATE_RTR                       = 2,
  64         MLX4_QP_STATE_RTS                       = 3,
  65         MLX4_QP_STATE_SQER                      = 4,
  66         MLX4_QP_STATE_SQD                       = 5,
  67         MLX4_QP_STATE_ERR                       = 6,
  68         MLX4_QP_STATE_SQ_DRAINING               = 7,
  69         MLX4_QP_NUM_STATE
  70 };
  71
  72 enum {
  73         MLX4_QP_ST_RC                           = 0x0,
  74         MLX4_QP_ST_UC                           = 0x1,
  75         MLX4_QP_ST_RD                           = 0x2,
  76         MLX4_QP_ST_UD                           = 0x3,
  77         MLX4_QP_ST_MLX                          = 0x7
  78 };
  79
  80 enum {
  81         MLX4_QP_PM_MIGRATED                     = 0x3,
  82         MLX4_QP_PM_ARMED                        = 0x0,
  83         MLX4_QP_PM_REARM                        = 0x1
  84 };
  85
  86 enum {
  87         /* params1 */
  88         MLX4_QP_BIT_SRE                         = 1 << 15,
  89         MLX4_QP_BIT_SWE                         = 1 << 14,
  90         MLX4_QP_BIT_SAE                         = 1 << 13,
  91         /* params2 */
  92         MLX4_QP_BIT_RRE                         = 1 << 15,
  93         MLX4_QP_BIT_RWE                         = 1 << 14,
  94         MLX4_QP_BIT_RAE                         = 1 << 13,
  95         MLX4_QP_BIT_RIC                         = 1 <<  4,
  96 };
  97
  98 struct mlx4_qp_path {
  99         u8                      fl;
 100         u8                      reserved1[2];
 101         u8                      pkey_index;
 102         u8                      reserved2;
 103         u8                      grh_mylmc;
 104         __be16                  rlid;
 105         u8                      ackto;
 106         u8                      mgid_index;
 107         u8                      static_rate;
 108         u8                      hop_limit;
 109         __be32                  tclass_flowlabel;
 110         u8                      rgid[16];
 111         u8                      sched_queue;
 112         u8                      snooper_flags;
 113         u8                      reserved3[2];
 114         u8                      counter_index;
 115         u8                      reserved4[7];
 116 };
 117
 118 struct mlx4_qp_context {
 119         __be32                  flags;
 120         __be32                  pd;
 121         u8                      mtu_msgmax;
 122         u8                      rq_size_stride;
 123         u8                      sq_size_stride;
 124         u8                      rlkey;
 125         __be32                  usr_page;
 126         __be32                  local_qpn;
 127         __be32                  remote_qpn;
 128         struct                  mlx4_qp_path pri_path;
 129         struct                  mlx4_qp_path alt_path;
 130         __be32                  params1;
 131         u32                     reserved1;
 132         __be32                  next_send_psn;
 133         __be32                  cqn_send;
 134         u32                     reserved2[2];
 135         __be32                  last_acked_psn;
 136         __be32                  ssn;
 137         __be32                  params2;
 138         __be32                  rnr_nextrecvpsn;
 139         __be32                  srcd;
 140         __be32                  cqn_recv;
 141         __be64                  db_rec_addr;
 142         __be32                  qkey;
 143         __be32                  srqn;
 144         __be32                  msn;
 145         __be16                  rq_wqe_counter;
 146         __be16                  sq_wqe_counter;
 147         u32                     reserved3[2];
 148         __be32                  param3;
 149         __be32                  nummmcpeers_basemkey;
 150         u8                      log_page_size;
 151         u8                      reserved4[2];
 152         u8                      mtt_base_addr_h;
 153         __be32                  mtt_base_addr_l;
 154         u32                     reserved5[10];
 155 };
 156
 157 /* Which firmware version adds support for NEC (NoErrorCompletion) bit */
 158 #define MLX4_FW_VER_WQE_CTRL_NEC mlx4_fw_ver(2, 2, 232)
 159
 160 enum {
 161         MLX4_WQE_CTRL_NEC               = 1 << 29,
 162         MLX4_WQE_CTRL_FENCE             = 1 << 6,
 163         MLX4_WQE_CTRL_CQ_UPDATE         = 3 << 2,
 164         MLX4_WQE_CTRL_SOLICITED         = 1 << 1,
 165         MLX4_WQE_CTRL_IP_CSUM           = 1 << 4,
 166         MLX4_WQE_CTRL_TCP_UDP_CSUM      = 1 << 5,
 167         MLX4_WQE_CTRL_INS_VLAN          = 1 << 6,
 168 };
 169
 170 struct mlx4_wqe_ctrl_seg {
 171         __be32                  owner_opcode;
 172         __be16                  vlan_tag;
 173         u8                      ins_vlan;
 174         u8                      fence_size;
 175         /*
 176          * High 24 bits are SRC remote buffer; low 8 bits are flags:
 177          * [7]   SO (strong ordering)
 178          * [5]   TCP/UDP checksum
 179          * [4]   IP checksum
 180          * [3:2] C (generate completion queue entry)
 181          * [1]   SE (solicited event)
 182          */
 183         __be32                  srcrb_flags;
 184         /*
 185          * imm is immediate data for send/RDMA write w/ immediate;
 186          * also invalidation key for send with invalidate; input
 187          * modifier for WQEs on CCQs.
 188          */
 189         __be32                  imm;
 190 };
 191
 192 enum {
 193         MLX4_WQE_MLX_VL15       = 1 << 17,
 194         MLX4_WQE_MLX_SLR        = 1 << 16
 195 };
 196
 197 struct mlx4_wqe_mlx_seg {
 198         u8                      owner;
 199         u8                      reserved1[2];
 200         u8                      opcode;
 201         u8                      reserved2[3];
 202         u8                      size;
 203         /*
 204          * [17]    VL15
 205          * [16]    SLR
 206          * [15:12] static rate
 207          * [11:8]  SL
 208          * [4]     ICRC
 209          * [3:2]   C
 210          * [0]     FL (force loopback)
 211          */
 212         __be32                  flags;
 213         __be16                  rlid;
 214         u16                     reserved3;
 215 };
 216
 217 struct mlx4_wqe_datagram_seg {
 218         __be32                  av[8];
 219         __be32                  dqpn;
 220         __be32                  qkey;
 221         __be32                  reservd[2];
 222 };
 223
 224 struct mlx4_wqe_lso_seg {
 225         __be32                  mss_hdr_size;
 226         __be32                  header[0];
 227 };
 228
 229 struct mlx4_wqe_bind_seg {
 230         __be32                  flags1;
 231         __be32                  flags2;
 232         __be32                  new_rkey;
 233         __be32                  lkey;
 234         __be64                  addr;
 235         __be64                  length;
 236 };
 237
 238 enum {
 239         MLX4_WQE_FMR_PERM_LOCAL_READ    = 1 << 27,
 240         MLX4_WQE_FMR_PERM_LOCAL_WRITE   = 1 << 28,
 241         MLX4_WQE_FMR_PERM_REMOTE_READ   = 1 << 29,
 242         MLX4_WQE_FMR_PERM_REMOTE_WRITE  = 1 << 30,
 243         MLX4_WQE_FMR_PERM_ATOMIC        = 1 << 31
 244 };
 245
 246 struct mlx4_wqe_fmr_seg {
 247         __be32                  flags;
 248         __be32                  mem_key;
 249         __be64                  buf_list;
 250         __be64                  start_addr;
 251         __be64                  reg_len;
 252         __be32                  offset;
 253         __be32                  page_size;
 254         u32                     reserved[2];
 255 };
 256
 257 struct mlx4_wqe_fmr_ext_seg {
 258         u8                      flags;
 259         u8                      reserved;
 260         __be16                  app_mask;
 261         __be16                  wire_app_tag;
 262         __be16                  mem_app_tag;
 263         __be32                  wire_ref_tag_base;
 264         __be32                  mem_ref_tag_base;
 265 };
 266
 267 struct mlx4_wqe_local_inval_seg {
 268         __be32                  flags;
 269         u32                     reserved1;
 270         __be32                  mem_key;
 271         u32                     reserved2[2];
 272         __be32                  guest_id;
 273         __be64                  pa;
 274 };
 275
 276 struct mlx4_wqe_raddr_seg {
 277         __be64                  raddr;
 278         __be32                  rkey;
 279         u32                     reserved;
 280 };
 281
 282 struct mlx4_wqe_atomic_seg {
 283         __be64                  swap_add;
 284         __be64                  compare;
 285 };
 286
 287 struct mlx4_wqe_data_seg {
 288         __be32                  byte_count;
 289         __be32                  lkey;
 290         __be64                  addr;
 291 };
 292
 293 enum {
 294         MLX4_INLINE_ALIGN       = 64,
 295 };
 296
 297 struct mlx4_wqe_inline_seg {
 298         __be32                  byte_count;
 299 };
 300
 301 int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
 302                    enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state,
 303                    struct mlx4_qp_context *context, enum mlx4_qp_optpar optpar,
 304                    int sqd_event, struct mlx4_qp *qp);
 305
 306 int mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp,
 307                   struct mlx4_qp_context *context);
 308
 309 int mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
 310                      struct mlx4_qp_context *context,
 311                      struct mlx4_qp *qp, enum mlx4_qp_state *qp_state);
 312
 313 static inline struct mlx4_qp *__mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn)
 314 {
 315         return radix_tree_lookup(&dev->qp_table_tree, qpn & (dev->caps.num_qps - 1));
 316 }
 317
 318 void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp);
 319
 320 #endif /* MLX4_QP_H */