include/standard-headers/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 "standard-headers/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         uint32_t qp_tab_size;
 138         uint32_t reserved;
 139 };
 140
 141 struct pvrdma_alloc_pd_resp {
 142         uint32_t pdn;
 143         uint32_t reserved;
 144 };
 145
 146 struct pvrdma_create_cq {
 147         uint64_t __attribute__((aligned(8))) buf_addr;
 148         uint32_t buf_size;
 149         uint32_t reserved;
 150 };
 151
 152 struct pvrdma_create_cq_resp {
 153         uint32_t cqn;
 154         uint32_t reserved;
 155 };
 156
 157 struct pvrdma_resize_cq {
 158         uint64_t __attribute__((aligned(8))) buf_addr;
 159         uint32_t buf_size;
 160         uint32_t reserved;
 161 };
 162
 163 struct pvrdma_create_srq {
 164         uint64_t __attribute__((aligned(8))) buf_addr;
 165         uint32_t buf_size;
 166         uint32_t reserved;
 167 };
 168
 169 struct pvrdma_create_srq_resp {
 170         uint32_t srqn;
 171         uint32_t reserved;
 172 };
 173
 174 struct pvrdma_create_qp {
 175         uint64_t __attribute__((aligned(8))) rbuf_addr;
 176         uint64_t __attribute__((aligned(8))) sbuf_addr;
 177         uint32_t rbuf_size;
 178         uint32_t sbuf_size;
 179         uint64_t __attribute__((aligned(8))) qp_addr;
 180 };
 181
 182 struct pvrdma_create_qp_resp {
 183         uint32_t qpn;
 184         uint32_t qp_handle;
 185 };
 186
 187 /* PVRDMA masked atomic compare and swap */
 188 struct pvrdma_ex_cmp_swap {
 189         uint64_t __attribute__((aligned(8))) swap_val;
 190         uint64_t __attribute__((aligned(8))) compare_val;
 191         uint64_t __attribute__((aligned(8))) swap_mask;
 192         uint64_t __attribute__((aligned(8))) compare_mask;
 193 };
 194
 195 /* PVRDMA masked atomic fetch and add */
 196 struct pvrdma_ex_fetch_add {
 197         uint64_t __attribute__((aligned(8))) add_val;
 198         uint64_t __attribute__((aligned(8))) field_boundary;
 199 };
 200
 201 /* PVRDMA address vector. */
 202 struct pvrdma_av {
 203         uint32_t port_pd;
 204         uint32_t sl_tclass_flowlabel;
 205         uint8_t dgid[16];
 206         uint8_t src_path_bits;
 207         uint8_t gid_index;
 208         uint8_t stat_rate;
 209         uint8_t hop_limit;
 210         uint8_t dmac[6];
 211         uint8_t reserved[6];
 212 };
 213
 214 /* PVRDMA scatter/gather entry */
 215 struct pvrdma_sge {
 216         uint64_t __attribute__((aligned(8))) addr;
 217         uint32_t   length;
 218         uint32_t   lkey;
 219 };
 220
 221 /* PVRDMA receive queue work request */
 222 struct pvrdma_rq_wqe_hdr {
 223         uint64_t __attribute__((aligned(8))) wr_id;             /* wr id */
 224         uint32_t num_sge;               /* size of s/g array */
 225         uint32_t total_len;     /* reserved */
 226 };
 227 /* Use pvrdma_sge (ib_sge) for receive queue s/g array elements. */
 228
 229 /* PVRDMA send queue work request */
 230 struct pvrdma_sq_wqe_hdr {
 231         uint64_t __attribute__((aligned(8))) wr_id;             /* wr id */
 232         uint32_t num_sge;               /* size of s/g array */
 233         uint32_t total_len;     /* reserved */
 234         uint32_t opcode;                /* operation type */
 235         uint32_t send_flags;    /* wr flags */
 236         union {
 237                 uint32_t imm_data;
 238                 uint32_t invalidate_rkey;
 239         } ex;
 240         uint32_t reserved;
 241         union {
 242                 struct {
 243                         uint64_t __attribute__((aligned(8))) remote_addr;
 244                         uint32_t rkey;
 245                         uint8_t reserved[4];
 246                 } rdma;
 247                 struct {
 248                         uint64_t __attribute__((aligned(8))) remote_addr;
 249                         uint64_t __attribute__((aligned(8))) compare_add;
 250                         uint64_t __attribute__((aligned(8))) swap;
 251                         uint32_t rkey;
 252                         uint32_t reserved;
 253                 } atomic;
 254                 struct {
 255                         uint64_t __attribute__((aligned(8))) remote_addr;
 256                         uint32_t log_arg_sz;
 257                         uint32_t rkey;
 258                         union {
 259                                 struct pvrdma_ex_cmp_swap  cmp_swap;
 260                                 struct pvrdma_ex_fetch_add fetch_add;
 261                         } wr_data;
 262                 } masked_atomics;
 263                 struct {
 264                         uint64_t __attribute__((aligned(8))) iova_start;
 265                         uint64_t __attribute__((aligned(8))) pl_pdir_dma;
 266                         uint32_t page_shift;
 267                         uint32_t page_list_len;
 268                         uint32_t length;
 269                         uint32_t access_flags;
 270                         uint32_t rkey;
 271                         uint32_t reserved;
 272                 } fast_reg;
 273                 struct {
 274                         uint32_t remote_qpn;
 275                         uint32_t remote_qkey;
 276                         struct pvrdma_av av;
 277                 } ud;
 278         } wr;
 279 };
 280 /* Use pvrdma_sge (ib_sge) for send queue s/g array elements. */
 281
 282 /* Completion queue element. */
 283 struct pvrdma_cqe {
 284         uint64_t __attribute__((aligned(8))) wr_id;
 285         uint64_t __attribute__((aligned(8))) qp;
 286         uint32_t opcode;
 287         uint32_t status;
 288         uint32_t byte_len;
 289         uint32_t imm_data;
 290         uint32_t src_qp;
 291         uint32_t wc_flags;
 292         uint32_t vendor_err;
 293         uint16_t pkey_index;
 294         uint16_t slid;
 295         uint8_t sl;
 296         uint8_t dlid_path_bits;
 297         uint8_t port_num;
 298         uint8_t smac[6];
 299         uint8_t network_hdr_type;
 300         uint8_t reserved2[6]; /* Pad to next power of 2 (64). */
 301 };
 302
 303 #endif /* __VMW_PVRDMA_ABI_H__ */