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_EDPM_MODE = 1 << 0,
43 QEDR_ALLOC_UCTX_DB_REC = 1 << 1,
44 QEDR_SUPPORT_DPM_SIZES = 1 << 2,
45};
46
47struct 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
56enum 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
65struct 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
86struct qedr_alloc_pd_ureq {
87 __aligned_u64 rsvd1;
88};
89
90struct qedr_alloc_pd_uresp {
91 __u32 pd_id;
92 __u32 reserved;
93};
94
95struct qedr_create_cq_ureq {
96 __aligned_u64 addr;
97 __aligned_u64 len;
98};
99
100struct qedr_create_cq_uresp {
101 __u32 db_offset;
102 __u16 icid;
103 __u16 reserved;
104 __aligned_u64 db_rec_addr;
105};
106
107struct 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
126struct 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
149struct 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
160struct 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 */
170struct qedr_user_db_rec {
171 __aligned_u64 db_data; /* doorbell data */
172};
173
174#endif /* __QEDR_USER_H__ */
175

source code of linux/include/uapi/rdma/qedr-abi.h