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_RESERVED        = 1 << 0,
  43         QEDR_ALLOC_UCTX_DB_REC          = 1 << 1
  44 };
  45
  46 struct 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
  54 enum 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
  63 struct 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
  82 struct qedr_alloc_pd_ureq {
  83         __aligned_u64 rsvd1;
  84 };
  85
  86 struct qedr_alloc_pd_uresp {
  87         __u32 pd_id;
  88         __u32 reserved;
  89 };
  90
  91 struct qedr_create_cq_ureq {
  92         __aligned_u64 addr;
  93         __aligned_u64 len;
  94 };
  95
  96 struct qedr_create_cq_uresp {
  97         __u32 db_offset;
  98         __u16 icid;
  99         __u16 reserved;
 100         __aligned_u64 db_rec_addr;
 101 };
 102
 103 struct 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
 122 struct 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
 145 struct 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
 156 struct 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  */
 166 struct qedr_user_db_rec {
 167         __aligned_u64 db_data; /* doorbell data */
 168 };
 169
 170 #endif /* __QEDR_USER_H__ */