xref: /openbmc/linux/include/rdma/tid_rdma_defs.h (revision c098bbb0)
1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
2 /*
3  * Copyright(c) 2018 Intel Corporation.
4  *
5  */
6 
7 #ifndef TID_RDMA_DEFS_H
8 #define TID_RDMA_DEFS_H
9 
10 #include <rdma/ib_pack.h>
11 
12 struct tid_rdma_read_req {
13 	__le32 kdeth0;
14 	__le32 kdeth1;
15 	struct ib_reth reth;
16 	__be32 tid_flow_psn;
17 	__be32 tid_flow_qp;
18 	__be32 verbs_qp;
19 };
20 
21 struct tid_rdma_read_resp {
22 	__le32 kdeth0;
23 	__le32 kdeth1;
24 	__be32 aeth;
25 	__be32 reserved[4];
26 	__be32 verbs_psn;
27 	__be32 verbs_qp;
28 };
29 
30 struct tid_rdma_write_req {
31 	__le32 kdeth0;
32 	__le32 kdeth1;
33 	struct ib_reth reth;
34 	__be32 reserved[2];
35 	__be32 verbs_qp;
36 };
37 
38 struct tid_rdma_write_resp {
39 	__le32 kdeth0;
40 	__le32 kdeth1;
41 	__be32 aeth;
42 	__be32 reserved[3];
43 	__be32 tid_flow_psn;
44 	__be32 tid_flow_qp;
45 	__be32 verbs_qp;
46 };
47 
48 struct tid_rdma_write_data {
49 	__le32 kdeth0;
50 	__le32 kdeth1;
51 	__be32 reserved[6];
52 	__be32 verbs_qp;
53 };
54 
55 struct tid_rdma_resync {
56 	__le32 kdeth0;
57 	__le32 kdeth1;
58 	__be32 reserved[6];
59 	__be32 verbs_qp;
60 };
61 
62 struct tid_rdma_ack {
63 	__le32 kdeth0;
64 	__le32 kdeth1;
65 	__be32 aeth;
66 	__be32 reserved[2];
67 	__be32 tid_flow_psn;
68 	__be32 verbs_psn;
69 	__be32 tid_flow_qp;
70 	__be32 verbs_qp;
71 };
72 
73 /*
74  * TID RDMA Opcodes
75  */
76 #define IB_OPCODE_TID_RDMA 0xe0
77 enum {
78 	IB_OPCODE_WRITE_REQ       = 0x0,
79 	IB_OPCODE_WRITE_RESP      = 0x1,
80 	IB_OPCODE_WRITE_DATA      = 0x2,
81 	IB_OPCODE_WRITE_DATA_LAST = 0x3,
82 	IB_OPCODE_READ_REQ        = 0x4,
83 	IB_OPCODE_READ_RESP       = 0x5,
84 	IB_OPCODE_RESYNC          = 0x6,
85 	IB_OPCODE_ACK             = 0x7,
86 
87 	IB_OPCODE(TID_RDMA, WRITE_REQ),
88 	IB_OPCODE(TID_RDMA, WRITE_RESP),
89 	IB_OPCODE(TID_RDMA, WRITE_DATA),
90 	IB_OPCODE(TID_RDMA, WRITE_DATA_LAST),
91 	IB_OPCODE(TID_RDMA, READ_REQ),
92 	IB_OPCODE(TID_RDMA, READ_RESP),
93 	IB_OPCODE(TID_RDMA, RESYNC),
94 	IB_OPCODE(TID_RDMA, ACK),
95 };
96 
97 #define TID_OP(x) IB_OPCODE_TID_RDMA_##x
98 
99 /*
100  * Define TID RDMA specific WR opcodes. The ib_wr_opcode
101  * enum already provides some reserved values for use by
102  * low level drivers. Two of those are used but renamed
103  * to be more descriptive.
104  */
105 #define IB_WR_TID_RDMA_WRITE IB_WR_RESERVED1
106 #define IB_WR_TID_RDMA_READ  IB_WR_RESERVED2
107 
108 #endif /* TID_RDMA_DEFS_H */
109