include/uapi/rdma/vmw_pvrdma-abi.h

   1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
   2 /*
   3  * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of EITHER the GNU General Public License
   7  * version 2 as published by the Free Software Foundation or the BSD
   8  * 2-Clause License. This program is distributed in the hope that it
   9  * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
  10  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  11  * See the GNU General Public License version 2 for more details at
  12  * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program available in the file COPYING in the main
  16  * directory of this source tree.
  17  *
  18  * The BSD 2-Clause License
  19  *
  20  *     Redistribution and use in source and binary forms, with or
  21  *     without modification, are permitted provided that the following
  22  *     conditions are met:
  23  *
  24  *      - Redistributions of source code must retain the above
  25  *        copyright notice, this list of conditions and the following
  26  *        disclaimer.
  27  *
  28  *      - Redistributions in binary form must reproduce the above
  29  *        copyright notice, this list of conditions and the following
  30  *        disclaimer in the documentation and/or other materials
  31  *        provided with the distribution.
  32  *
  33  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  34  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  35  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  36  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  37  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  38  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  39  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  40  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  41  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  42  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  43  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  44  * OF THE POSSIBILITY OF SUCH DAMAGE.
  45  */
  46
  47 #ifndef __VMW_PVRDMA_ABI_H__
  48 #define __VMW_PVRDMA_ABI_H__
  49
  50 #include <linux/types.h>
  51
  52 #define PVRDMA_UVERBS_ABI_VERSION       3               /* ABI Version. */
  53 #define PVRDMA_UAR_HANDLE_MASK          0x00FFFFFF      /* Bottom 24 bits. */
  54 #define PVRDMA_UAR_QP_OFFSET            0               /* QP doorbell. */
  55 #define PVRDMA_UAR_QP_SEND              (1 << 30)       /* Send bit. */
  56 #define PVRDMA_UAR_QP_RECV              (1 << 31)       /* Recv bit. */
  57 #define PVRDMA_UAR_CQ_OFFSET            4               /* CQ doorbell. */
  58 #define PVRDMA_UAR_CQ_ARM_SOL           (1 << 29)       /* Arm solicited bit. */
  59 #define PVRDMA_UAR_CQ_ARM               (1 << 30)       /* Arm bit. */
  60 #define PVRDMA_UAR_CQ_POLL              (1 << 31)       /* Poll bit. */
  61 #define PVRDMA_UAR_SRQ_OFFSET           8               /* SRQ doorbell. */
  62 #define PVRDMA_UAR_SRQ_RECV             (1 << 30)       /* Recv bit. */
  63
  64 enum pvrdma_wr_opcode {
  65         PVRDMA_WR_RDMA_WRITE,
  66         PVRDMA_WR_RDMA_WRITE_WITH_IMM,
  67         PVRDMA_WR_SEND,
  68         PVRDMA_WR_SEND_WITH_IMM,
  69         PVRDMA_WR_RDMA_READ,
  70         PVRDMA_WR_ATOMIC_CMP_AND_SWP,
  71         PVRDMA_WR_ATOMIC_FETCH_AND_ADD,
  72         PVRDMA_WR_LSO,
  73         PVRDMA_WR_SEND_WITH_INV,
  74         PVRDMA_WR_RDMA_READ_WITH_INV,
  75         PVRDMA_WR_LOCAL_INV,
  76         PVRDMA_WR_FAST_REG_MR,
  77         PVRDMA_WR_MASKED_ATOMIC_CMP_AND_SWP,
  78         PVRDMA_WR_MASKED_ATOMIC_FETCH_AND_ADD,
  79         PVRDMA_WR_BIND_MW,
  80         PVRDMA_WR_REG_SIG_MR,
  81         PVRDMA_WR_ERROR,
  82 };
  83
  84 enum pvrdma_wc_status {
  85         PVRDMA_WC_SUCCESS,
  86         PVRDMA_WC_LOC_LEN_ERR,
  87         PVRDMA_WC_LOC_QP_OP_ERR,
  88         PVRDMA_WC_LOC_EEC_OP_ERR,
  89         PVRDMA_WC_LOC_PROT_ERR,
  90         PVRDMA_WC_WR_FLUSH_ERR,
  91         PVRDMA_WC_MW_BIND_ERR,
  92         PVRDMA_WC_BAD_RESP_ERR,
  93         PVRDMA_WC_LOC_ACCESS_ERR,
  94         PVRDMA_WC_REM_INV_REQ_ERR,
  95         PVRDMA_WC_REM_ACCESS_ERR,
  96         PVRDMA_WC_REM_OP_ERR,
  97         PVRDMA_WC_RETRY_EXC_ERR,
  98         PVRDMA_WC_RNR_RETRY_EXC_ERR,
  99         PVRDMA_WC_LOC_RDD_VIOL_ERR,
 100         PVRDMA_WC_REM_INV_RD_REQ_ERR,
 101         PVRDMA_WC_REM_ABORT_ERR,
 102         PVRDMA_WC_INV_EECN_ERR,
 103         PVRDMA_WC_INV_EEC_STATE_ERR,
 104         PVRDMA_WC_FATAL_ERR,
 105         PVRDMA_WC_RESP_TIMEOUT_ERR,
 106         PVRDMA_WC_GENERAL_ERR,
 107 };
 108
 109 enum pvrdma_wc_opcode {
 110         PVRDMA_WC_SEND,
 111         PVRDMA_WC_RDMA_WRITE,
 112         PVRDMA_WC_RDMA_READ,
 113         PVRDMA_WC_COMP_SWAP,
 114         PVRDMA_WC_FETCH_ADD,
 115         PVRDMA_WC_BIND_MW,
 116         PVRDMA_WC_LSO,
 117         PVRDMA_WC_LOCAL_INV,
 118         PVRDMA_WC_FAST_REG_MR,
 119         PVRDMA_WC_MASKED_COMP_SWAP,
 120         PVRDMA_WC_MASKED_FETCH_ADD,
 121         PVRDMA_WC_RECV = 1 << 7,
 122         PVRDMA_WC_RECV_RDMA_WITH_IMM,
 123 };
 124
 125 enum pvrdma_wc_flags {
 126         PVRDMA_WC_GRH                   = 1 << 0,
 127         PVRDMA_WC_WITH_IMM              = 1 << 1,
 128         PVRDMA_WC_WITH_INVALIDATE       = 1 << 2,
 129         PVRDMA_WC_IP_CSUM_OK            = 1 << 3,
 130         PVRDMA_WC_WITH_SMAC             = 1 << 4,
 131         PVRDMA_WC_WITH_VLAN             = 1 << 5,
 132         PVRDMA_WC_WITH_NETWORK_HDR_TYPE = 1 << 6,
 133         PVRDMA_WC_FLAGS_MAX             = PVRDMA_WC_WITH_NETWORK_HDR_TYPE,
 134 };
 135
 136 struct pvrdma_alloc_ucontext_resp {
 137         __u32 qp_tab_size;
 138         __u32 reserved;
 139 };
 140
 141 struct pvrdma_alloc_pd_resp {
 142         __u32 pdn;
 143         __u32 reserved;
 144 };
 145
 146 struct pvrdma_create_cq {
 147         __aligned_u64 buf_addr;
 148         __u32 buf_size;
 149         __u32 reserved;
 150 };
 151
 152 struct pvrdma_create_cq_resp {
 153         __u32 cqn;
 154         __u32 reserved;
 155 };
 156
 157 struct pvrdma_resize_cq {
 158         __aligned_u64 buf_addr;
 159         __u32 buf_size;
 160         __u32 reserved;
 161 };
 162
 163 struct pvrdma_create_srq {
 164         __aligned_u64 buf_addr;
 165         __u32 buf_size;
 166         __u32 reserved;
 167 };
 168
 169 struct pvrdma_create_srq_resp {
 170         __u32 srqn;
 171         __u32 reserved;
 172 };
 173
 174 struct pvrdma_create_qp {
 175         __aligned_u64 rbuf_addr;
 176         __aligned_u64 sbuf_addr;
 177         __u32 rbuf_size;
 178         __u32 sbuf_size;
 179         __aligned_u64 qp_addr;
 180 };
 181
 182 /* PVRDMA masked atomic compare and swap */
 183 struct pvrdma_ex_cmp_swap {
 184         __aligned_u64 swap_val;
 185         __aligned_u64 compare_val;
 186         __aligned_u64 swap_mask;
 187         __aligned_u64 compare_mask;
 188 };
 189
 190 /* PVRDMA masked atomic fetch and add */
 191 struct pvrdma_ex_fetch_add {
 192         __aligned_u64 add_val;
 193         __aligned_u64 field_boundary;
 194 };
 195
 196 /* PVRDMA address vector. */
 197 struct pvrdma_av {
 198         __u32 port_pd;
 199         __u32 sl_tclass_flowlabel;
 200         __u8 dgid[16];
 201         __u8 src_path_bits;
 202         __u8 gid_index;
 203         __u8 stat_rate;
 204         __u8 hop_limit;
 205         __u8 dmac[6];
 206         __u8 reserved[6];
 207 };
 208
 209 /* PVRDMA scatter/gather entry */
 210 struct pvrdma_sge {
 211         __aligned_u64 addr;
 212         __u32   length;
 213         __u32   lkey;
 214 };
 215
 216 /* PVRDMA receive queue work request */
 217 struct pvrdma_rq_wqe_hdr {
 218         __aligned_u64 wr_id;            /* wr id */
 219         __u32 num_sge;          /* size of s/g array */
 220         __u32 total_len;        /* reserved */
 221 };
 222 /* Use pvrdma_sge (ib_sge) for receive queue s/g array elements. */
 223
 224 /* PVRDMA send queue work request */
 225 struct pvrdma_sq_wqe_hdr {
 226         __aligned_u64 wr_id;            /* wr id */
 227         __u32 num_sge;          /* size of s/g array */
 228         __u32 total_len;        /* reserved */
 229         __u32 opcode;           /* operation type */
 230         __u32 send_flags;       /* wr flags */
 231         union {
 232                 __be32 imm_data;
 233                 __u32 invalidate_rkey;
 234         } ex;
 235         __u32 reserved;
 236         union {
 237                 struct {
 238                         __aligned_u64 remote_addr;
 239                         __u32 rkey;
 240                         __u8 reserved[4];
 241                 } rdma;
 242                 struct {
 243                         __aligned_u64 remote_addr;
 244                         __aligned_u64 compare_add;
 245                         __aligned_u64 swap;
 246                         __u32 rkey;
 247                         __u32 reserved;
 248                 } atomic;
 249                 struct {
 250                         __aligned_u64 remote_addr;
 251                         __u32 log_arg_sz;
 252                         __u32 rkey;
 253                         union {
 254                                 struct pvrdma_ex_cmp_swap  cmp_swap;
 255                                 struct pvrdma_ex_fetch_add fetch_add;
 256                         } wr_data;
 257                 } masked_atomics;
 258                 struct {
 259                         __aligned_u64 iova_start;
 260                         __aligned_u64 pl_pdir_dma;
 261                         __u32 page_shift;
 262                         __u32 page_list_len;
 263                         __u32 length;
 264                         __u32 access_flags;
 265                         __u32 rkey;
 266                         __u32 reserved;
 267                 } fast_reg;
 268                 struct {
 269                         __u32 remote_qpn;
 270                         __u32 remote_qkey;
 271                         struct pvrdma_av av;
 272                 } ud;
 273         } wr;
 274 };
 275 /* Use pvrdma_sge (ib_sge) for send queue s/g array elements. */
 276
 277 /* Completion queue element. */
 278 struct pvrdma_cqe {
 279         __aligned_u64 wr_id;
 280         __aligned_u64 qp;
 281         __u32 opcode;
 282         __u32 status;
 283         __u32 byte_len;
 284         __be32 imm_data;
 285         __u32 src_qp;
 286         __u32 wc_flags;
 287         __u32 vendor_err;
 288         __u16 pkey_index;
 289         __u16 slid;
 290         __u8 sl;
 291         __u8 dlid_path_bits;
 292         __u8 port_num;
 293         __u8 smac[6];
 294         __u8 network_hdr_type;
 295         __u8 reserved2[6]; /* Pad to next power of 2 (64). */
 296 };
 297
 298 #endif /* __VMW_PVRDMA_ABI_H__ */