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1/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
2/*
3 * Copyright 2018-2026 Amazon.com, Inc. or its affiliates. All rights reserved.
4 */
5
6#ifndef EFA_ABI_USER_H
7#define EFA_ABI_USER_H
8
9#include <linux/types.h>
10#include <rdma/ib_user_ioctl_cmds.h>
11
12/*
13 * Increment this value if any changes that break userspace ABI
14 * compatibility are made.
15 */
16#define EFA_UVERBS_ABI_VERSION 1
17
18/*
19 * Keep structs aligned to 8 bytes.
20 * Keep reserved fields as arrays of __u8 named reserved_XXX where XXX is the
21 * hex bit offset of the field.
22 */
23
24enum {
25 EFA_ALLOC_UCONTEXT_CMD_SUPP_CAPS_TX_BATCH = 1 << 0,
26 EFA_ALLOC_UCONTEXT_CMD_SUPP_CAPS_MIN_SQ_WR = 1 << 1,
27};
28
29struct efa_ibv_alloc_ucontext_cmd {
30 __u32 supported_caps;
31 __u8 reserved_20[4];
32};
33
34enum efa_ibv_user_cmds_supp_udata {
35 EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE = 1 << 0,
36 EFA_USER_CMDS_SUPP_UDATA_CREATE_AH = 1 << 1,
37};
38
39struct efa_ibv_alloc_ucontext_resp {
40 __u32 comp_mask;
41 __u32 cmds_supp_udata_mask;
42 __u16 sub_cqs_per_cq;
43 __u16 inline_buf_size;
44 __u32 max_llq_size; /* bytes */
45 __u16 max_tx_batch; /* units of 64 bytes */
46 __u16 min_sq_wr;
47 __u16 inline_buf_size_ex;
48 __u8 reserved_b0[2];
49};
50
51struct efa_ibv_alloc_pd_resp {
52 __u32 comp_mask;
53 __u16 pdn;
54 __u8 reserved_30[2];
55};
56
57enum {
58 EFA_CREATE_CQ_WITH_COMPLETION_CHANNEL = 1 << 0,
59 EFA_CREATE_CQ_WITH_SGID = 1 << 1,
60 EFA_CREATE_CQ_WITH_SQ_COMP_64_BIT_REQ_ID = 1 << 2,
61};
62
63struct efa_ibv_create_cq {
64 __u32 comp_mask;
65 __u32 cq_entry_size;
66 __u16 num_sub_cqs;
67 __u8 flags;
68 __u8 reserved_58[5];
69};
70
71enum {
72 EFA_CREATE_CQ_RESP_DB_OFF = 1 << 0,
73};
74
75struct efa_ibv_create_cq_resp {
76 __u32 comp_mask;
77 __u8 reserved_20[4];
78 __aligned_u64 q_mmap_key;
79 __aligned_u64 q_mmap_size;
80 __u16 cq_idx;
81 __u8 reserved_d0[2];
82 __u32 db_off;
83 __aligned_u64 db_mmap_key;
84};
85
86enum {
87 EFA_QP_DRIVER_TYPE_SRD = 0,
88};
89
90enum {
91 EFA_CREATE_QP_WITH_UNSOLICITED_WRITE_RECV = 1 << 0,
92 EFA_CREATE_QP_WITH_SQ_64_BIT_REQ_ID = 1 << 1,
93};
94
95struct efa_ibv_create_qp {
96 __u32 comp_mask;
97 __u32 rq_ring_size; /* bytes */
98 __u32 sq_ring_size; /* bytes */
99 __u32 driver_qp_type;
100 __u16 flags;
101 __u8 sl;
102 __u8 reserved_98[5];
103};
104
105struct efa_ibv_create_qp_resp {
106 __u32 comp_mask;
107 /* the offset inside the page of the rq db */
108 __u32 rq_db_offset;
109 /* the offset inside the page of the sq db */
110 __u32 sq_db_offset;
111 /* the offset inside the page of descriptors buffer */
112 __u32 llq_desc_offset;
113 __aligned_u64 rq_mmap_key;
114 __aligned_u64 rq_mmap_size;
115 __aligned_u64 rq_db_mmap_key;
116 __aligned_u64 sq_db_mmap_key;
117 __aligned_u64 llq_desc_mmap_key;
118 __u16 send_sub_cq_idx;
119 __u16 recv_sub_cq_idx;
120 __u8 reserved_1e0[4];
121};
122
123struct efa_ibv_create_ah_resp {
124 __u32 comp_mask;
125 __u16 efa_address_handle;
126 __u8 reserved_30[2];
127};
128
129enum {
130 EFA_QUERY_DEVICE_CAPS_RDMA_READ = 1 << 0,
131 EFA_QUERY_DEVICE_CAPS_RNR_RETRY = 1 << 1,
132 EFA_QUERY_DEVICE_CAPS_CQ_NOTIFICATIONS = 1 << 2,
133 EFA_QUERY_DEVICE_CAPS_CQ_WITH_SGID = 1 << 3,
134 EFA_QUERY_DEVICE_CAPS_DATA_POLLING_128 = 1 << 4,
135 EFA_QUERY_DEVICE_CAPS_RDMA_WRITE = 1 << 5,
136 EFA_QUERY_DEVICE_CAPS_UNSOLICITED_WRITE_RECV = 1 << 6,
137 EFA_QUERY_DEVICE_CAPS_CQ_WITH_EXT_MEM = 1 << 7,
138 EFA_QUERY_DEVICE_CAPS_COMP_CNTR = 1 << 8,
139 EFA_QUERY_DEVICE_CAPS_SQ_64_BIT_REQ_ID = 1 << 9,
140};
141
142struct efa_ibv_ex_query_device_resp {
143 __u32 comp_mask;
144 __u32 max_sq_wr;
145 __u32 max_rq_wr;
146 __u16 max_sq_sge;
147 __u16 max_rq_sge;
148 __u32 max_rdma_size;
149 __u32 device_caps;
150};
151
152enum {
153 EFA_QUERY_MR_VALIDITY_RECV_IC_ID = 1 << 0,
154 EFA_QUERY_MR_VALIDITY_RDMA_READ_IC_ID = 1 << 1,
155 EFA_QUERY_MR_VALIDITY_RDMA_RECV_IC_ID = 1 << 2,
156};
157
158enum efa_query_mr_attrs {
159 EFA_IB_ATTR_QUERY_MR_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
160 EFA_IB_ATTR_QUERY_MR_RESP_IC_ID_VALIDITY,
161 EFA_IB_ATTR_QUERY_MR_RESP_RECV_IC_ID,
162 EFA_IB_ATTR_QUERY_MR_RESP_RDMA_READ_IC_ID,
163 EFA_IB_ATTR_QUERY_MR_RESP_RDMA_RECV_IC_ID,
164};
165
166enum efa_mr_methods {
167 EFA_IB_METHOD_MR_QUERY = (1U << UVERBS_ID_NS_SHIFT),
168};
169
170enum efa_comp_cntr_create_attrs {
171 EFA_IB_ATTR_CREATE_COMP_CNTR_COMP_BUFFER = (1U << UVERBS_ID_NS_SHIFT),
172 EFA_IB_ATTR_CREATE_COMP_CNTR_ERR_BUFFER,
173};
174
175#endif /* EFA_ABI_USER_H */