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1/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
2/*
3 * Copyright 2018-2020 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
55struct efa_ibv_create_cq {
56 __u32 comp_mask;
57 __u32 cq_entry_size;
58 __u16 num_sub_cqs;
59 __u8 reserved_50[6];
60};
61
62struct efa_ibv_create_cq_resp {
63 __u32 comp_mask;
64 __u8 reserved_20[4];
65 __aligned_u64 q_mmap_key;
66 __aligned_u64 q_mmap_size;
67 __u16 cq_idx;
68 __u8 reserved_d0[6];
69};
70
71enum {
72 EFA_QP_DRIVER_TYPE_SRD = 0,
73};
74
75struct efa_ibv_create_qp {
76 __u32 comp_mask;
77 __u32 rq_ring_size; /* bytes */
78 __u32 sq_ring_size; /* bytes */
79 __u32 driver_qp_type;
80};
81
82struct efa_ibv_create_qp_resp {
83 __u32 comp_mask;
84 /* the offset inside the page of the rq db */
85 __u32 rq_db_offset;
86 /* the offset inside the page of the sq db */
87 __u32 sq_db_offset;
88 /* the offset inside the page of descriptors buffer */
89 __u32 llq_desc_offset;
90 __aligned_u64 rq_mmap_key;
91 __aligned_u64 rq_mmap_size;
92 __aligned_u64 rq_db_mmap_key;
93 __aligned_u64 sq_db_mmap_key;
94 __aligned_u64 llq_desc_mmap_key;
95 __u16 send_sub_cq_idx;
96 __u16 recv_sub_cq_idx;
97 __u8 reserved_1e0[4];
98};
99
100struct efa_ibv_create_ah_resp {
101 __u32 comp_mask;
102 __u16 efa_address_handle;
103 __u8 reserved_30[2];
104};
105
106enum {
107 EFA_QUERY_DEVICE_CAPS_RDMA_READ = 1 << 0,
108};
109
110struct efa_ibv_ex_query_device_resp {
111 __u32 comp_mask;
112 __u32 max_sq_wr;
113 __u32 max_rq_wr;
114 __u16 max_sq_sge;
115 __u16 max_rq_sge;
116 __u32 max_rdma_size;
117 __u32 device_caps;
118};
119
120#endif /* EFA_ABI_USER_H */