1 /*
2 * Copyright (c) 2005 Cisco Systems. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33 #ifndef MTHCA_WQE_H
34 #define MTHCA_WQE_H
35
36 #include <linux/types.h>
37
38 enum {
39 MTHCA_NEXT_DBD = 1 << 7,
40 MTHCA_NEXT_FENCE = 1 << 6,
41 MTHCA_NEXT_CQ_UPDATE = 1 << 3,
42 MTHCA_NEXT_EVENT_GEN = 1 << 2,
43 MTHCA_NEXT_SOLICIT = 1 << 1,
44 MTHCA_NEXT_IP_CSUM = 1 << 4,
45 MTHCA_NEXT_TCP_UDP_CSUM = 1 << 5,
46
47 MTHCA_MLX_VL15 = 1 << 17,
48 MTHCA_MLX_SLR = 1 << 16
49 };
50
51 enum {
52 MTHCA_INVAL_LKEY = 0x100,
53 MTHCA_TAVOR_MAX_WQES_PER_RECV_DB = 256,
54 MTHCA_ARBEL_MAX_WQES_PER_SEND_DB = 255
55 };
56
57 struct mthca_next_seg {
58 __be32 nda_op; /* [31:6] next WQE [4:0] next opcode */
59 __be32 ee_nds; /* [31:8] next EE [7] DBD [6] F [5:0] next WQE size */
60 __be32 flags; /* [3] CQ [2] Event [1] Solicit */
61 __be32 imm; /* immediate data */
62 };
63
64 struct mthca_tavor_ud_seg {
65 u32 reserved1;
66 __be32 lkey;
67 __be64 av_addr;
68 u32 reserved2[4];
69 __be32 dqpn;
70 __be32 qkey;
71 u32 reserved3[2];
72 };
73
74 struct mthca_arbel_ud_seg {
75 __be32 av[8];
76 __be32 dqpn;
77 __be32 qkey;
78 u32 reserved[2];
79 };
80
81 struct mthca_bind_seg {
82 __be32 flags; /* [31] Atomic [30] rem write [29] rem read */
83 u32 reserved;
84 __be32 new_rkey;
85 __be32 lkey;
86 __be64 addr;
87 __be64 length;
88 };
89
90 struct mthca_raddr_seg {
91 __be64 raddr;
92 __be32 rkey;
93 u32 reserved;
94 };
95
96 struct mthca_atomic_seg {
97 __be64 swap_add;
98 __be64 compare;
99 };
100
101 struct mthca_data_seg {
102 __be32 byte_count;
103 __be32 lkey;
104 __be64 addr;
105 };
106
107 struct mthca_mlx_seg {
108 __be32 nda_op;
109 __be32 nds;
110 __be32 flags; /* [17] VL15 [16] SLR [14:12] static rate
111 [11:8] SL [3] C [2] E */
112 __be16 rlid;
113 __be16 vcrc;
114 };
115
116 static __always_inline void mthca_set_data_seg(struct mthca_data_seg *dseg,
117 struct ib_sge *sg)
118 {
119 dseg->byte_count = cpu_to_be32(sg->length);
120 dseg->lkey = cpu_to_be32(sg->lkey);
121 dseg->addr = cpu_to_be64(sg->addr);
122 }
123
124 static __always_inline void mthca_set_data_seg_inval(struct mthca_data_seg *dseg)
125 {
126 dseg->byte_count = 0;
127 dseg->lkey = cpu_to_be32(MTHCA_INVAL_LKEY);
128 dseg->addr = 0;
129 }
130
131 #endif /* MTHCA_WQE_H */