LXR linux/include/uapi/rdma/qedr-abi.h

   1/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */
   2/* QLogic qedr NIC Driver
   3 * Copyright (c) 2015-2016  QLogic Corporation
   4 *
   5 * This software is available to you under a choice of one of two
   6 * licenses.  You may choose to be licensed under the terms of the GNU
   7 * General Public License (GPL) Version 2, available from the file
   8 * COPYING in the main directory of this source tree, or the
   9 * OpenIB.org BSD license below:
  10 *
  11 *     Redistribution and use in source and binary forms, with or
  12 *     without modification, are permitted provided that the following
  13 *     conditions are met:
  14 *
  15 *      - Redistributions of source code must retain the above
  16 *        copyright notice, this list of conditions and the following
  17 *        disclaimer.
  18 *
  19 *      - Redistributions in binary form must reproduce the above
  20 *        copyright notice, this list of conditions and the following
  21 *        disclaimer in the documentation and /or other materials
  22 *        provided with the distribution.
  23 *
  24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31 * SOFTWARE.
  32 */
  33#ifndef __QEDR_USER_H__
  34#define __QEDR_USER_H__
  35
  36#include <linux/types.h>
  37
  38#define QEDR_ABI_VERSION                (8)
  39
  40/* user kernel communication data structures. */
  41enum qedr_alloc_ucontext_flags {
  42        QEDR_ALLOC_UCTX_RESERVED        = 1 << 0,
  43        QEDR_ALLOC_UCTX_DB_REC          = 1 << 1
  44};
  45
  46struct qedr_alloc_ucontext_req {
  47        __u32 context_flags;
  48        __u32 reserved;
  49};
  50
  51#define QEDR_LDPM_MAX_SIZE      (8192)
  52#define QEDR_EDPM_TRANS_SIZE    (64)
  53
  54enum qedr_rdma_dpm_type {
  55        QEDR_DPM_TYPE_NONE              = 0,
  56        QEDR_DPM_TYPE_ROCE_ENHANCED     = 1 << 0,
  57        QEDR_DPM_TYPE_ROCE_LEGACY       = 1 << 1,
  58        QEDR_DPM_TYPE_IWARP_LEGACY      = 1 << 2,
  59        QEDR_DPM_TYPE_RESERVED          = 1 << 3,
  60        QEDR_DPM_SIZES_SET              = 1 << 4,
  61};
  62
  63struct qedr_alloc_ucontext_resp {
  64        __aligned_u64 db_pa;
  65        __u32 db_size;
  66
  67        __u32 max_send_wr;
  68        __u32 max_recv_wr;
  69        __u32 max_srq_wr;
  70        __u32 sges_per_send_wr;
  71        __u32 sges_per_recv_wr;
  72        __u32 sges_per_srq_wr;
  73        __u32 max_cqes;
  74        __u8 dpm_flags;
  75        __u8 wids_enabled;
  76        __u16 wid_count;
  77        __u16 ldpm_limit_size;
  78        __u8 edpm_trans_size;
  79        __u8 reserved;
  80};
  81
  82struct qedr_alloc_pd_ureq {
  83        __aligned_u64 rsvd1;
  84};
  85
  86struct qedr_alloc_pd_uresp {
  87        __u32 pd_id;
  88        __u32 reserved;
  89};
  90
  91struct qedr_create_cq_ureq {
  92        __aligned_u64 addr;
  93        __aligned_u64 len;
  94};
  95
  96struct qedr_create_cq_uresp {
  97        __u32 db_offset;
  98        __u16 icid;
  99        __u16 reserved;
 100        __aligned_u64 db_rec_addr;
 101};
 102
 103struct qedr_create_qp_ureq {
 104        __u32 qp_handle_hi;
 105        __u32 qp_handle_lo;
 106
 107        /* SQ */
 108        /* user space virtual address of SQ buffer */
 109        __aligned_u64 sq_addr;
 110
 111        /* length of SQ buffer */
 112        __aligned_u64 sq_len;
 113
 114        /* RQ */
 115        /* user space virtual address of RQ buffer */
 116        __aligned_u64 rq_addr;
 117
 118        /* length of RQ buffer */
 119        __aligned_u64 rq_len;
 120};
 121
 122struct qedr_create_qp_uresp {
 123        __u32 qp_id;
 124        __u32 atomic_supported;
 125
 126        /* SQ */
 127        __u32 sq_db_offset;
 128        __u16 sq_icid;
 129
 130        /* RQ */
 131        __u32 rq_db_offset;
 132        __u16 rq_icid;
 133
 134        __u32 rq_db2_offset;
 135        __u32 reserved;
 136
 137        /* address of SQ doorbell recovery user entry */
 138        __aligned_u64 sq_db_rec_addr;
 139
 140        /* address of RQ doorbell recovery user entry */
 141        __aligned_u64 rq_db_rec_addr;
 142
 143};
 144
 145struct qedr_create_srq_ureq {
 146        /* user space virtual address of producer pair */
 147        __aligned_u64 prod_pair_addr;
 148
 149        /* user space virtual address of SRQ buffer */
 150        __aligned_u64 srq_addr;
 151
 152        /* length of SRQ buffer */
 153        __aligned_u64 srq_len;
 154};
 155
 156struct qedr_create_srq_uresp {
 157        __u16 srq_id;
 158        __u16 reserved0;
 159        __u32 reserved1;
 160};
 161
 162/* doorbell recovery entry allocated and populated by userspace doorbelling
 163 * entities and mapped to kernel. Kernel uses this to register doorbell
 164 * information with doorbell drop recovery mechanism.
 165 */
 166struct qedr_user_db_rec {
 167        __aligned_u64 db_data; /* doorbell data */
 168};
 169
 170#endif /* __QEDR_USER_H__ */
 171