1/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
2/*
3 * Copyright 2018-2023 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	EFA_CREATE_CQ_WITH_SGID               = 1 << 1,
58};
59
60struct efa_ibv_create_cq {
61	__u32 comp_mask;
62	__u32 cq_entry_size;
63	__u16 num_sub_cqs;
64	__u8 flags;
65	__u8 reserved_58[5];
66};
67
68enum {
69	EFA_CREATE_CQ_RESP_DB_OFF = 1 << 0,
70};
71
72struct efa_ibv_create_cq_resp {
73	__u32 comp_mask;
74	__u8 reserved_20[4];
75	__aligned_u64 q_mmap_key;
76	__aligned_u64 q_mmap_size;
77	__u16 cq_idx;
78	__u8 reserved_d0[2];
79	__u32 db_off;
80	__aligned_u64 db_mmap_key;
81};
82
83enum {
84	EFA_QP_DRIVER_TYPE_SRD = 0,
85};
86
87struct efa_ibv_create_qp {
88	__u32 comp_mask;
89	__u32 rq_ring_size; /* bytes */
90	__u32 sq_ring_size; /* bytes */
91	__u32 driver_qp_type;
92};
93
94struct efa_ibv_create_qp_resp {
95	__u32 comp_mask;
96	/* the offset inside the page of the rq db */
97	__u32 rq_db_offset;
98	/* the offset inside the page of the sq db */
99	__u32 sq_db_offset;
100	/* the offset inside the page of descriptors buffer */
101	__u32 llq_desc_offset;
102	__aligned_u64 rq_mmap_key;
103	__aligned_u64 rq_mmap_size;
104	__aligned_u64 rq_db_mmap_key;
105	__aligned_u64 sq_db_mmap_key;
106	__aligned_u64 llq_desc_mmap_key;
107	__u16 send_sub_cq_idx;
108	__u16 recv_sub_cq_idx;
109	__u8 reserved_1e0[4];
110};
111
112struct efa_ibv_create_ah_resp {
113	__u32 comp_mask;
114	__u16 efa_address_handle;
115	__u8 reserved_30[2];
116};
117
118enum {
119	EFA_QUERY_DEVICE_CAPS_RDMA_READ = 1 << 0,
120	EFA_QUERY_DEVICE_CAPS_RNR_RETRY = 1 << 1,
121	EFA_QUERY_DEVICE_CAPS_CQ_NOTIFICATIONS = 1 << 2,
122	EFA_QUERY_DEVICE_CAPS_CQ_WITH_SGID     = 1 << 3,
123	EFA_QUERY_DEVICE_CAPS_DATA_POLLING_128 = 1 << 4,
124	EFA_QUERY_DEVICE_CAPS_RDMA_WRITE = 1 << 5,
125};
126
127struct efa_ibv_ex_query_device_resp {
128	__u32 comp_mask;
129	__u32 max_sq_wr;
130	__u32 max_rq_wr;
131	__u16 max_sq_sge;
132	__u16 max_rq_sge;
133	__u32 max_rdma_size;
134	__u32 device_caps;
135};
136
137#endif /* EFA_ABI_USER_H */
138