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1/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
2/*
3 * Copyright 2018-2021 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
11/*
12 * Increment this value if any changes that break userspace ABI
13 * compatibility are made.
14 */
15#define EFA_UVERBS_ABI_VERSION 1
16
17/*
18 * Keep structs aligned to 8 bytes.
19 * Keep reserved fields as arrays of __u8 named reserved_XXX where XXX is the
20 * hex bit offset of the field.
21 */
22
23enum {
24 EFA_ALLOC_UCONTEXT_CMD_COMP_TX_BATCH = 1 << 0,
25 EFA_ALLOC_UCONTEXT_CMD_COMP_MIN_SQ_WR = 1 << 1,
26};
27
28struct efa_ibv_alloc_ucontext_cmd {
29 __u32 comp_mask;
30 __u8 reserved_20[4];
31};
32
33enum efa_ibv_user_cmds_supp_udata {
34 EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE = 1 << 0,
35 EFA_USER_CMDS_SUPP_UDATA_CREATE_AH = 1 << 1,
36};
37
38struct efa_ibv_alloc_ucontext_resp {
39 __u32 comp_mask;
40 __u32 cmds_supp_udata_mask;
41 __u16 sub_cqs_per_cq;
42 __u16 inline_buf_size;
43 __u32 max_llq_size; /* bytes */
44 __u16 max_tx_batch; /* units of 64 bytes */
45 __u16 min_sq_wr;
46 __u8 reserved_a0[4];
47};
48
49struct efa_ibv_alloc_pd_resp {
50 __u32 comp_mask;
51 __u16 pdn;
52 __u8 reserved_30[2];
53};
54
55enum {
56 EFA_CREATE_CQ_WITH_COMPLETION_CHANNEL = 1 << 0,
57};
58
59struct efa_ibv_create_cq {
60 __u32 comp_mask;
61 __u32 cq_entry_size;
62 __u16 num_sub_cqs;
63 __u8 flags;
64 __u8 reserved_58[5];
65};
66
67enum {
68 EFA_CREATE_CQ_RESP_DB_OFF = 1 << 0,
69};
70
71struct efa_ibv_create_cq_resp {
72 __u32 comp_mask;
73 __u8 reserved_20[4];
74 __aligned_u64 q_mmap_key;
75 __aligned_u64 q_mmap_size;
76 __u16 cq_idx;
77 __u8 reserved_d0[2];
78 __u32 db_off;
79 __aligned_u64 db_mmap_key;
80};
81
82enum {
83 EFA_QP_DRIVER_TYPE_SRD = 0,
84};
85
86struct efa_ibv_create_qp {
87 __u32 comp_mask;
88 __u32 rq_ring_size; /* bytes */
89 __u32 sq_ring_size; /* bytes */
90 __u32 driver_qp_type;
91};
92
93struct efa_ibv_create_qp_resp {
94 __u32 comp_mask;
95 /* the offset inside the page of the rq db */
96 __u32 rq_db_offset;
97 /* the offset inside the page of the sq db */
98 __u32 sq_db_offset;
99 /* the offset inside the page of descriptors buffer */
100 __u32 llq_desc_offset;
101 __aligned_u64 rq_mmap_key;
102 __aligned_u64 rq_mmap_size;
103 __aligned_u64 rq_db_mmap_key;
104 __aligned_u64 sq_db_mmap_key;
105 __aligned_u64 llq_desc_mmap_key;
106 __u16 send_sub_cq_idx;
107 __u16 recv_sub_cq_idx;
108 __u8 reserved_1e0[4];
109};
110
111struct efa_ibv_create_ah_resp {
112 __u32 comp_mask;
113 __u16 efa_address_handle;
114 __u8 reserved_30[2];
115};
116
117enum {
118 EFA_QUERY_DEVICE_CAPS_RDMA_READ = 1 << 0,
119 EFA_QUERY_DEVICE_CAPS_RNR_RETRY = 1 << 1,
120 EFA_QUERY_DEVICE_CAPS_CQ_NOTIFICATIONS = 1 << 2,
121};
122
123struct efa_ibv_ex_query_device_resp {
124 __u32 comp_mask;
125 __u32 max_sq_wr;
126 __u32 max_rq_wr;
127 __u16 max_sq_sge;
128 __u16 max_rq_sge;
129 __u32 max_rdma_size;
130 __u32 device_caps;
131};
132
133#endif /* EFA_ABI_USER_H */