xref: /linux/include/uapi/rdma/qedr-abi.h (revision 4b4193256c8d3bc3a5397b5cd9494c2ad386317d)
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. */
41 enum 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 
47 struct 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 
56 enum 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 
65 struct 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 
86 struct qedr_alloc_pd_ureq {
87 	__aligned_u64 rsvd1;
88 };
89 
90 struct qedr_alloc_pd_uresp {
91 	__u32 pd_id;
92 	__u32 reserved;
93 };
94 
95 struct qedr_create_cq_ureq {
96 	__aligned_u64 addr;
97 	__aligned_u64 len;
98 };
99 
100 struct qedr_create_cq_uresp {
101 	__u32 db_offset;
102 	__u16 icid;
103 	__u16 reserved;
104 	__aligned_u64 db_rec_addr;
105 };
106 
107 struct 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 
126 struct 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 
149 struct 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 
160 struct 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  */
170 struct qedr_user_db_rec {
171 	__aligned_u64 db_data; /* doorbell data */
172 };
173 
174 #endif /* __QEDR_USER_H__ */
175