1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
2 /*
3  * Broadcom NetXtreme-E RoCE driver.
4  *
5  * Copyright (c) 2016 - 2017, Broadcom. All rights reserved.  The term
6  * Broadcom refers to Broadcom Limited and/or its subsidiaries.
7  *
8  * This software is available to you under a choice of one of two
9  * licenses.  You may choose to be licensed under the terms of the GNU
10  * General Public License (GPL) Version 2, available from the file
11  * COPYING in the main directory of this source tree, or the
12  * BSD license below:
13  *
14  * Redistribution and use in source and binary forms, with or without
15  * modification, are permitted provided that the following conditions
16  * are met:
17  *
18  * 1. Redistributions of source code must retain the above copyright
19  *    notice, this list of conditions and the following disclaimer.
20  * 2. Redistributions in binary form must reproduce the above copyright
21  *    notice, this list of conditions and the following disclaimer in
22  *    the documentation and/or other materials provided with the
23  *    distribution.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
26  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
27  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
33  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
34  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
35  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36  *
37  * Description: Uverbs ABI header file
38  */
39 
40 #ifndef __BNXT_RE_UVERBS_ABI_H__
41 #define __BNXT_RE_UVERBS_ABI_H__
42 
43 #include <linux/types.h>
44 #include <rdma/ib_user_ioctl_cmds.h>
45 
46 #define BNXT_RE_ABI_VERSION	1
47 
48 #define BNXT_RE_CHIP_ID0_CHIP_NUM_SFT		0x00
49 #define BNXT_RE_CHIP_ID0_CHIP_REV_SFT		0x10
50 #define BNXT_RE_CHIP_ID0_CHIP_MET_SFT		0x18
51 
52 enum {
53 	BNXT_RE_UCNTX_CMASK_HAVE_CCTX = 0x1ULL,
54 	BNXT_RE_UCNTX_CMASK_HAVE_MODE = 0x02ULL,
55 	BNXT_RE_UCNTX_CMASK_WC_DPI_ENABLED = 0x04ULL,
56 	BNXT_RE_UCNTX_CMASK_DBR_PACING_ENABLED = 0x08ULL,
57 };
58 
59 enum bnxt_re_wqe_mode {
60 	BNXT_QPLIB_WQE_MODE_STATIC	= 0x00,
61 	BNXT_QPLIB_WQE_MODE_VARIABLE	= 0x01,
62 	BNXT_QPLIB_WQE_MODE_INVALID	= 0x02,
63 };
64 
65 struct bnxt_re_uctx_resp {
66 	__u32 dev_id;
67 	__u32 max_qp;
68 	__u32 pg_size;
69 	__u32 cqe_sz;
70 	__u32 max_cqd;
71 	__u32 rsvd;
72 	__aligned_u64 comp_mask;
73 	__u32 chip_id0;
74 	__u32 chip_id1;
75 	__u32 mode;
76 	__u32 rsvd1; /* padding */
77 };
78 
79 /*
80  * This struct is placed after the ib_uverbs_alloc_pd_resp struct, which is
81  * not 8 byted aligned. To avoid undesired padding in various cases we have to
82  * set this struct to packed.
83  */
84 struct bnxt_re_pd_resp {
85 	__u32 pdid;
86 	__u32 dpi;
87 	__u64 dbr;
88 } __attribute__((packed, aligned(4)));
89 
90 struct bnxt_re_cq_req {
91 	__aligned_u64 cq_va;
92 	__aligned_u64 cq_handle;
93 };
94 
95 struct bnxt_re_cq_resp {
96 	__u32 cqid;
97 	__u32 tail;
98 	__u32 phase;
99 	__u32 rsvd;
100 };
101 
102 struct bnxt_re_resize_cq_req {
103 	__aligned_u64 cq_va;
104 };
105 
106 struct bnxt_re_qp_req {
107 	__aligned_u64 qpsva;
108 	__aligned_u64 qprva;
109 	__aligned_u64 qp_handle;
110 };
111 
112 struct bnxt_re_qp_resp {
113 	__u32 qpid;
114 	__u32 rsvd;
115 };
116 
117 struct bnxt_re_srq_req {
118 	__aligned_u64 srqva;
119 	__aligned_u64 srq_handle;
120 };
121 
122 struct bnxt_re_srq_resp {
123 	__u32 srqid;
124 };
125 
126 enum bnxt_re_shpg_offt {
127 	BNXT_RE_BEG_RESV_OFFT	= 0x00,
128 	BNXT_RE_AVID_OFFT	= 0x10,
129 	BNXT_RE_AVID_SIZE	= 0x04,
130 	BNXT_RE_END_RESV_OFFT	= 0xFF0
131 };
132 
133 enum bnxt_re_objects {
134 	BNXT_RE_OBJECT_ALLOC_PAGE = (1U << UVERBS_ID_NS_SHIFT),
135 	BNXT_RE_OBJECT_NOTIFY_DRV,
136 };
137 
138 enum bnxt_re_alloc_page_type {
139 	BNXT_RE_ALLOC_WC_PAGE = 0,
140 	BNXT_RE_ALLOC_DBR_BAR_PAGE,
141 	BNXT_RE_ALLOC_DBR_PAGE,
142 };
143 
144 enum bnxt_re_var_alloc_page_attrs {
145 	BNXT_RE_ALLOC_PAGE_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
146 	BNXT_RE_ALLOC_PAGE_TYPE,
147 	BNXT_RE_ALLOC_PAGE_DPI,
148 	BNXT_RE_ALLOC_PAGE_MMAP_OFFSET,
149 	BNXT_RE_ALLOC_PAGE_MMAP_LENGTH,
150 };
151 
152 enum bnxt_re_alloc_page_attrs {
153 	BNXT_RE_DESTROY_PAGE_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
154 };
155 
156 enum bnxt_re_alloc_page_methods {
157 	BNXT_RE_METHOD_ALLOC_PAGE = (1U << UVERBS_ID_NS_SHIFT),
158 	BNXT_RE_METHOD_DESTROY_PAGE,
159 };
160 
161 enum bnxt_re_notify_drv_methods {
162 	BNXT_RE_METHOD_NOTIFY_DRV = (1U << UVERBS_ID_NS_SHIFT),
163 };
164 #endif /* __BNXT_RE_UVERBS_ABI_H__*/
165