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-rw-r--r--drivers/scsi/ibmvscsi/srp.h225
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diff --git a/drivers/scsi/ibmvscsi/srp.h b/drivers/scsi/ibmvscsi/srp.h
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1/*****************************************************************************/
2/* srp.h -- SCSI RDMA Protocol definitions */
3/* */
4/* Written By: Colin Devilbis, IBM Corporation */
5/* */
6/* Copyright (C) 2003 IBM Corporation */
7/* */
8/* This program is free software; you can redistribute it and/or modify */
9/* it under the terms of the GNU General Public License as published by */
10/* the Free Software Foundation; either version 2 of the License, or */
11/* (at your option) any later version. */
12/* */
13/* This program is distributed in the hope that it will be useful, */
14/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
15/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
16/* GNU General Public License for more details. */
17/* */
18/* You should have received a copy of the GNU General Public License */
19/* along with this program; if not, write to the Free Software */
20/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
21/* */
22/* */
23/* This file contains structures and definitions for the SCSI RDMA Protocol */
24/* (SRP) as defined in the T10 standard available at www.t10.org. This */
25/* file was based on the 16a version of the standard */
26/* */
27/*****************************************************************************/
28#ifndef SRP_H
29#define SRP_H
30
31#define PACKED __attribute__((packed))
32
33enum srp_types {
34 SRP_LOGIN_REQ_TYPE = 0x00,
35 SRP_LOGIN_RSP_TYPE = 0xC0,
36 SRP_LOGIN_REJ_TYPE = 0x80,
37 SRP_I_LOGOUT_TYPE = 0x03,
38 SRP_T_LOGOUT_TYPE = 0x80,
39 SRP_TSK_MGMT_TYPE = 0x01,
40 SRP_CMD_TYPE = 0x02,
41 SRP_RSP_TYPE = 0xC1,
42 SRP_CRED_REQ_TYPE = 0x81,
43 SRP_CRED_RSP_TYPE = 0x41,
44 SRP_AER_REQ_TYPE = 0x82,
45 SRP_AER_RSP_TYPE = 0x42
46};
47
48enum srp_descriptor_formats {
49 SRP_NO_BUFFER = 0x00,
50 SRP_DIRECT_BUFFER = 0x01,
51 SRP_INDIRECT_BUFFER = 0x02
52};
53
54struct memory_descriptor {
55 u64 virtual_address;
56 u32 memory_handle;
57 u32 length;
58};
59
60struct indirect_descriptor {
61 struct memory_descriptor head;
62 u32 total_length;
63 struct memory_descriptor list[1] PACKED;
64};
65
66struct srp_generic {
67 u8 type;
68 u8 reserved1[7];
69 u64 tag;
70};
71
72struct srp_login_req {
73 u8 type;
74 u8 reserved1[7];
75 u64 tag;
76 u32 max_requested_initiator_to_target_iulen;
77 u32 reserved2;
78 u16 required_buffer_formats;
79 u8 reserved3:6;
80 u8 multi_channel_action:2;
81 u8 reserved4;
82 u32 reserved5;
83 u8 initiator_port_identifier[16];
84 u8 target_port_identifier[16];
85};
86
87struct srp_login_rsp {
88 u8 type;
89 u8 reserved1[3];
90 u32 request_limit_delta;
91 u64 tag;
92 u32 max_initiator_to_target_iulen;
93 u32 max_target_to_initiator_iulen;
94 u16 supported_buffer_formats;
95 u8 reserved2:6;
96 u8 multi_channel_result:2;
97 u8 reserved3;
98 u8 reserved4[24];
99};
100
101struct srp_login_rej {
102 u8 type;
103 u8 reserved1[3];
104 u32 reason;
105 u64 tag;
106 u64 reserved2;
107 u16 supported_buffer_formats;
108 u8 reserved3[6];
109};
110
111struct srp_i_logout {
112 u8 type;
113 u8 reserved1[7];
114 u64 tag;
115};
116
117struct srp_t_logout {
118 u8 type;
119 u8 reserved1[3];
120 u32 reason;
121 u64 tag;
122};
123
124struct srp_tsk_mgmt {
125 u8 type;
126 u8 reserved1[7];
127 u64 tag;
128 u32 reserved2;
129 u64 lun PACKED;
130 u8 reserved3;
131 u8 reserved4;
132 u8 task_mgmt_flags;
133 u8 reserved5;
134 u64 managed_task_tag;
135 u64 reserved6;
136};
137
138struct srp_cmd {
139 u8 type;
140 u32 reserved1 PACKED;
141 u8 data_out_format:4;
142 u8 data_in_format:4;
143 u8 data_out_count;
144 u8 data_in_count;
145 u64 tag;
146 u32 reserved2;
147 u64 lun PACKED;
148 u8 reserved3;
149 u8 reserved4:5;
150 u8 task_attribute:3;
151 u8 reserved5;
152 u8 additional_cdb_len;
153 u8 cdb[16];
154 u8 additional_data[0x100 - 0x30];
155};
156
157struct srp_rsp {
158 u8 type;
159 u8 reserved1[3];
160 u32 request_limit_delta;
161 u64 tag;
162 u16 reserved2;
163 u8 reserved3:2;
164 u8 diunder:1;
165 u8 diover:1;
166 u8 dounder:1;
167 u8 doover:1;
168 u8 snsvalid:1;
169 u8 rspvalid:1;
170 u8 status;
171 u32 data_in_residual_count;
172 u32 data_out_residual_count;
173 u32 sense_data_list_length;
174 u32 response_data_list_length;
175 u8 sense_and_response_data[18];
176};
177
178struct srp_cred_req {
179 u8 type;
180 u8 reserved1[3];
181 u32 request_limit_delta;
182 u64 tag;
183};
184
185struct srp_cred_rsp {
186 u8 type;
187 u8 reserved1[7];
188 u64 tag;
189};
190
191struct srp_aer_req {
192 u8 type;
193 u8 reserved1[3];
194 u32 request_limit_delta;
195 u64 tag;
196 u32 reserved2;
197 u64 lun;
198 u32 sense_data_list_length;
199 u32 reserved3;
200 u8 sense_data[20];
201};
202
203struct srp_aer_rsp {
204 u8 type;
205 u8 reserved1[7];
206 u64 tag;
207};
208
209union srp_iu {
210 struct srp_generic generic;
211 struct srp_login_req login_req;
212 struct srp_login_rsp login_rsp;
213 struct srp_login_rej login_rej;
214 struct srp_i_logout i_logout;
215 struct srp_t_logout t_logout;
216 struct srp_tsk_mgmt tsk_mgmt;
217 struct srp_cmd cmd;
218 struct srp_rsp rsp;
219 struct srp_cred_req cred_req;
220 struct srp_cred_rsp cred_rsp;
221 struct srp_aer_req aer_req;
222 struct srp_aer_rsp aer_rsp;
223};
224
225#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 20:42:04 -0500