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. */
  41 enum qedr_alloc_ucontext_flags {
  42         QEDR_ALLOC_UCTX_EDPM_MODE       = 1 << 0,
  43         QEDR_ALLOC_UCTX_DB_REC          = 1 << 1,
  44         QEDR_SUPPORT_DPM_SIZES          = 1 << 2,
  45 };
  46
  47 struct qedr_alloc_ucontext_req {
  48         __u32 context_flags;
  49         __u32 reserved;
  50 };
  51
  52 #define QEDR_LDPM_MAX_SIZE      (8192)
  53 #define QEDR_EDPM_TRANS_SIZE    (64)
  54 #define QEDR_EDPM_MAX_SIZE      (ROCE_REQ_MAX_INLINE_DATA_SIZE)
  55
  56 enum qedr_rdma_dpm_type {
  57         QEDR_DPM_TYPE_NONE              = 0,
  58         QEDR_DPM_TYPE_ROCE_ENHANCED     = 1 << 0,
  59         QEDR_DPM_TYPE_ROCE_LEGACY       = 1 << 1,
  60         QEDR_DPM_TYPE_IWARP_LEGACY      = 1 << 2,
  61         QEDR_DPM_TYPE_ROCE_EDPM_MODE    = 1 << 3,
  62         QEDR_DPM_SIZES_SET              = 1 << 4,
  63 };
  64
  65 struct qedr_alloc_ucontext_resp {
  66         __aligned_u64 db_pa;
  67         __u32 db_size;
  68
  69         __u32 max_send_wr;
  70         __u32 max_recv_wr;
  71         __u32 max_srq_wr;
  72         __u32 sges_per_send_wr;
  73         __u32 sges_per_recv_wr;
  74         __u32 sges_per_srq_wr;
  75         __u32 max_cqes;
  76         __u8 dpm_flags;
  77         __u8 wids_enabled;
  78         __u16 wid_count;
  79         __u16 ldpm_limit_size;
  80         __u8 edpm_trans_size;
  81         __u8 reserved;
  82         __u16 edpm_limit_size;
  83         __u8 padding[6];
  84 };
  85
  86 struct qedr_alloc_pd_ureq {
  87         __aligned_u64 rsvd1;
  88 };
  89
  90 struct qedr_alloc_pd_uresp {
  91         __u32 pd_id;
  92         __u32 reserved;
  93 };
  94
  95 struct qedr_create_cq_ureq {
  96         __aligned_u64 addr;
  97         __aligned_u64 len;
  98 };
  99
 100 struct qedr_create_cq_uresp {
 101         __u32 db_offset;
 102         __u16 icid;
 103         __u16 reserved;
 104         __aligned_u64 db_rec_addr;
 105 };
 106
 107 struct qedr_create_qp_ureq {
 108         __u32 qp_handle_hi;
 109         __u32 qp_handle_lo;
 110
 111         /* SQ */
 112         /* user space virtual address of SQ buffer */
 113         __aligned_u64 sq_addr;
 114
 115         /* length of SQ buffer */
 116         __aligned_u64 sq_len;
 117
 118         /* RQ */
 119         /* user space virtual address of RQ buffer */
 120         __aligned_u64 rq_addr;
 121
 122         /* length of RQ buffer */
 123         __aligned_u64 rq_len;
 124 };
 125
 126 struct qedr_create_qp_uresp {
 127         __u32 qp_id;
 128         __u32 atomic_supported;
 129
 130         /* SQ */
 131         __u32 sq_db_offset;
 132         __u16 sq_icid;
 133
 134         /* RQ */
 135         __u32 rq_db_offset;
 136         __u16 rq_icid;
 137
 138         __u32 rq_db2_offset;
 139         __u32 reserved;
 140
 141         /* address of SQ doorbell recovery user entry */
 142         __aligned_u64 sq_db_rec_addr;
 143
 144         /* address of RQ doorbell recovery user entry */
 145         __aligned_u64 rq_db_rec_addr;
 146
 147 };
 148
 149 struct qedr_create_srq_ureq {
 150         /* user space virtual address of producer pair */
 151         __aligned_u64 prod_pair_addr;
 152
 153         /* user space virtual address of SRQ buffer */
 154         __aligned_u64 srq_addr;
 155
 156         /* length of SRQ buffer */
 157         __aligned_u64 srq_len;
 158 };
 159
 160 struct qedr_create_srq_uresp {
 161         __u16 srq_id;
 162         __u16 reserved0;
 163         __u32 reserved1;
 164 };
 165
 166 /* doorbell recovery entry allocated and populated by userspace doorbelling
 167  * entities and mapped to kernel. Kernel uses this to register doorbell
 168  * information with doorbell drop recovery mechanism.
 169  */
 170 struct qedr_user_db_rec {
 171         __aligned_u64 db_data; /* doorbell data */
 172 };
 173
 174 #endif /* __QEDR_USER_H__ */