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