include/uapi/rdma/vmw_pvrdma-abi.h

   1 /*
   2  * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of EITHER the GNU General Public License
   6  * version 2 as published by the Free Software Foundation or the BSD
   7  * 2-Clause License. This program is distributed in the hope that it
   8  * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
   9  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  10  * See the GNU General Public License version 2 for more details at
  11  * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program available in the file COPYING in the main
  15  * directory of this source tree.
  16  *
  17  * The BSD 2-Clause License
  18  *
  19  *     Redistribution and use in source and binary forms, with or
  20  *     without modification, are permitted provided that the following
  21  *     conditions are met:
  22  *
  23  *      - Redistributions of source code must retain the above
  24  *        copyright notice, this list of conditions and the following
  25  *        disclaimer.
  26  *
  27  *      - Redistributions in binary form must reproduce the above
  28  *        copyright notice, this list of conditions and the following
  29  *        disclaimer in the documentation and/or other materials
  30  *        provided with the distribution.
  31  *
  32  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  33  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  34  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  35  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  36  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  37  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  38  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  39  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  40  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  41  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  42  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  43  * OF THE POSSIBILITY OF SUCH DAMAGE.
  44  */
  45
  46 #ifndef __VMW_PVRDMA_ABI_H__
  47 #define __VMW_PVRDMA_ABI_H__
  48
  49 #include <linux/types.h>
  50
  51 #define PVRDMA_UVERBS_ABI_VERSION       3               /* ABI Version. */
  52 #define PVRDMA_UAR_HANDLE_MASK          0x00FFFFFF      /* Bottom 24 bits. */
  53 #define PVRDMA_UAR_QP_OFFSET            0               /* QP doorbell. */
  54 #define PVRDMA_UAR_QP_SEND              BIT(30)         /* Send bit. */
  55 #define PVRDMA_UAR_QP_RECV              BIT(31)         /* Recv bit. */
  56 #define PVRDMA_UAR_CQ_OFFSET            4               /* CQ doorbell. */
  57 #define PVRDMA_UAR_CQ_ARM_SOL           BIT(29)         /* Arm solicited bit. */
  58 #define PVRDMA_UAR_CQ_ARM               BIT(30)         /* Arm bit. */
  59 #define PVRDMA_UAR_CQ_POLL              BIT(31)         /* Poll bit. */
  60
  61 enum pvrdma_wr_opcode {
  62         PVRDMA_WR_RDMA_WRITE,
  63         PVRDMA_WR_RDMA_WRITE_WITH_IMM,
  64         PVRDMA_WR_SEND,
  65         PVRDMA_WR_SEND_WITH_IMM,
  66         PVRDMA_WR_RDMA_READ,
  67         PVRDMA_WR_ATOMIC_CMP_AND_SWP,
  68         PVRDMA_WR_ATOMIC_FETCH_AND_ADD,
  69         PVRDMA_WR_LSO,
  70         PVRDMA_WR_SEND_WITH_INV,
  71         PVRDMA_WR_RDMA_READ_WITH_INV,
  72         PVRDMA_WR_LOCAL_INV,
  73         PVRDMA_WR_FAST_REG_MR,
  74         PVRDMA_WR_MASKED_ATOMIC_CMP_AND_SWP,
  75         PVRDMA_WR_MASKED_ATOMIC_FETCH_AND_ADD,
  76         PVRDMA_WR_BIND_MW,
  77         PVRDMA_WR_REG_SIG_MR,
  78 };
  79
  80 enum pvrdma_wc_status {
  81         PVRDMA_WC_SUCCESS,
  82         PVRDMA_WC_LOC_LEN_ERR,
  83         PVRDMA_WC_LOC_QP_OP_ERR,
  84         PVRDMA_WC_LOC_EEC_OP_ERR,
  85         PVRDMA_WC_LOC_PROT_ERR,
  86         PVRDMA_WC_WR_FLUSH_ERR,
  87         PVRDMA_WC_MW_BIND_ERR,
  88         PVRDMA_WC_BAD_RESP_ERR,
  89         PVRDMA_WC_LOC_ACCESS_ERR,
  90         PVRDMA_WC_REM_INV_REQ_ERR,
  91         PVRDMA_WC_REM_ACCESS_ERR,
  92         PVRDMA_WC_REM_OP_ERR,
  93         PVRDMA_WC_RETRY_EXC_ERR,
  94         PVRDMA_WC_RNR_RETRY_EXC_ERR,
  95         PVRDMA_WC_LOC_RDD_VIOL_ERR,
  96         PVRDMA_WC_REM_INV_RD_REQ_ERR,
  97         PVRDMA_WC_REM_ABORT_ERR,
  98         PVRDMA_WC_INV_EECN_ERR,
  99         PVRDMA_WC_INV_EEC_STATE_ERR,
 100         PVRDMA_WC_FATAL_ERR,
 101         PVRDMA_WC_RESP_TIMEOUT_ERR,
 102         PVRDMA_WC_GENERAL_ERR,
 103 };
 104
 105 enum pvrdma_wc_opcode {
 106         PVRDMA_WC_SEND,
 107         PVRDMA_WC_RDMA_WRITE,
 108         PVRDMA_WC_RDMA_READ,
 109         PVRDMA_WC_COMP_SWAP,
 110         PVRDMA_WC_FETCH_ADD,
 111         PVRDMA_WC_BIND_MW,
 112         PVRDMA_WC_LSO,
 113         PVRDMA_WC_LOCAL_INV,
 114         PVRDMA_WC_FAST_REG_MR,
 115         PVRDMA_WC_MASKED_COMP_SWAP,
 116         PVRDMA_WC_MASKED_FETCH_ADD,
 117         PVRDMA_WC_RECV = 1 << 7,
 118         PVRDMA_WC_RECV_RDMA_WITH_IMM,
 119 };
 120
 121 enum pvrdma_wc_flags {
 122         PVRDMA_WC_GRH                   = 1 << 0,
 123         PVRDMA_WC_WITH_IMM              = 1 << 1,
 124         PVRDMA_WC_WITH_INVALIDATE       = 1 << 2,
 125         PVRDMA_WC_IP_CSUM_OK            = 1 << 3,
 126         PVRDMA_WC_WITH_SMAC             = 1 << 4,
 127         PVRDMA_WC_WITH_VLAN             = 1 << 5,
 128         PVRDMA_WC_FLAGS_MAX             = PVRDMA_WC_WITH_VLAN,
 129 };
 130
 131 struct pvrdma_alloc_ucontext_resp {
 132         __u32 qp_tab_size;
 133         __u32 reserved;
 134 };
 135
 136 struct pvrdma_alloc_pd_resp {
 137         __u32 pdn;
 138         __u32 reserved;
 139 };
 140
 141 struct pvrdma_create_cq {
 142         __u64 buf_addr;
 143         __u32 buf_size;
 144         __u32 reserved;
 145 };
 146
 147 struct pvrdma_create_cq_resp {
 148         __u32 cqn;
 149         __u32 reserved;
 150 };
 151
 152 struct pvrdma_resize_cq {
 153         __u64 buf_addr;
 154         __u32 buf_size;
 155         __u32 reserved;
 156 };
 157
 158 struct pvrdma_create_srq {
 159         __u64 buf_addr;
 160 };
 161
 162 struct pvrdma_create_srq_resp {
 163         __u32 srqn;
 164         __u32 reserved;
 165 };
 166
 167 struct pvrdma_create_qp {
 168         __u64 rbuf_addr;
 169         __u64 sbuf_addr;
 170         __u32 rbuf_size;
 171         __u32 sbuf_size;
 172         __u64 qp_addr;
 173 };
 174
 175 /* PVRDMA masked atomic compare and swap */
 176 struct pvrdma_ex_cmp_swap {
 177         __u64 swap_val;
 178         __u64 compare_val;
 179         __u64 swap_mask;
 180         __u64 compare_mask;
 181 };
 182
 183 /* PVRDMA masked atomic fetch and add */
 184 struct pvrdma_ex_fetch_add {
 185         __u64 add_val;
 186         __u64 field_boundary;
 187 };
 188
 189 /* PVRDMA address vector. */
 190 struct pvrdma_av {
 191         __u32 port_pd;
 192         __u32 sl_tclass_flowlabel;
 193         __u8 dgid[16];
 194         __u8 src_path_bits;
 195         __u8 gid_index;
 196         __u8 stat_rate;
 197         __u8 hop_limit;
 198         __u8 dmac[6];
 199         __u8 reserved[6];
 200 };
 201
 202 /* PVRDMA scatter/gather entry */
 203 struct pvrdma_sge {
 204         __u64   addr;
 205         __u32   length;
 206         __u32   lkey;
 207 };
 208
 209 /* PVRDMA receive queue work request */
 210 struct pvrdma_rq_wqe_hdr {
 211         __u64 wr_id;            /* wr id */
 212         __u32 num_sge;          /* size of s/g array */
 213         __u32 total_len;        /* reserved */
 214 };
 215 /* Use pvrdma_sge (ib_sge) for receive queue s/g array elements. */
 216
 217 /* PVRDMA send queue work request */
 218 struct pvrdma_sq_wqe_hdr {
 219         __u64 wr_id;            /* wr id */
 220         __u32 num_sge;          /* size of s/g array */
 221         __u32 total_len;        /* reserved */
 222         __u32 opcode;           /* operation type */
 223         __u32 send_flags;       /* wr flags */
 224         union {
 225                 __be32 imm_data;
 226                 __u32 invalidate_rkey;
 227         } ex;
 228         __u32 reserved;
 229         union {
 230                 struct {
 231                         __u64 remote_addr;
 232                         __u32 rkey;
 233                         __u8 reserved[4];
 234                 } rdma;
 235                 struct {
 236                         __u64 remote_addr;
 237                         __u64 compare_add;
 238                         __u64 swap;
 239                         __u32 rkey;
 240                         __u32 reserved;
 241                 } atomic;
 242                 struct {
 243                         __u64 remote_addr;
 244                         __u32 log_arg_sz;
 245                         __u32 rkey;
 246                         union {
 247                                 struct pvrdma_ex_cmp_swap  cmp_swap;
 248                                 struct pvrdma_ex_fetch_add fetch_add;
 249                         } wr_data;
 250                 } masked_atomics;
 251                 struct {
 252                         __u64 iova_start;
 253                         __u64 pl_pdir_dma;
 254                         __u32 page_shift;
 255                         __u32 page_list_len;
 256                         __u32 length;
 257                         __u32 access_flags;
 258                         __u32 rkey;
 259                 } fast_reg;
 260                 struct {
 261                         __u32 remote_qpn;
 262                         __u32 remote_qkey;
 263                         struct pvrdma_av av;
 264                 } ud;
 265         } wr;
 266 };
 267 /* Use pvrdma_sge (ib_sge) for send queue s/g array elements. */
 268
 269 /* Completion queue element. */
 270 struct pvrdma_cqe {
 271         __u64 wr_id;
 272         __u64 qp;
 273         __u32 opcode;
 274         __u32 status;
 275         __u32 byte_len;
 276         __be32 imm_data;
 277         __u32 src_qp;
 278         __u32 wc_flags;
 279         __u32 vendor_err;
 280         __u16 pkey_index;
 281         __u16 slid;
 282         __u8 sl;
 283         __u8 dlid_path_bits;
 284         __u8 port_num;
 285         __u8 smac[6];
 286         __u8 reserved2[7]; /* Pad to next power of 2 (64). */
 287 };
 288
 289 #endif /* __VMW_PVRDMA_ABI_H__ */