pcmcia: CompactFlash driver for PA Semi Electra boards
[pv_ops_mirror.git] / drivers / scsi / ibmvscsi / viosrp.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 IBM RPA (RS/6000 */
24 /* platform architecture) implementation of the SRP (SCSI RDMA Protocol) */
25 /* standard. SRP is used on IBM iSeries and pSeries platforms to send SCSI */
26 /* commands between logical partitions. */
27 /* */
28 /* SRP Information Units (IUs) are sent on a "Command/Response Queue" (CRQ) */
29 /* between partitions. The definitions in this file are architected, */
30 /* and cannot be changed without breaking compatibility with other versions */
31 /* of Linux and other operating systems (AIX, OS/400) that talk this protocol*/
32 /* between logical partitions */
33 /*****************************************************************************/
34 #ifndef VIOSRP_H
35 #define VIOSRP_H
36 #include <scsi/srp.h>
38 #define SRP_VERSION "16.a"
39 #define SRP_MAX_IU_LEN 256
41 union srp_iu {
42 struct srp_login_req login_req;
43 struct srp_login_rsp login_rsp;
44 struct srp_login_rej login_rej;
45 struct srp_i_logout i_logout;
46 struct srp_t_logout t_logout;
47 struct srp_tsk_mgmt tsk_mgmt;
48 struct srp_cmd cmd;
49 struct srp_rsp rsp;
50 u8 reserved[SRP_MAX_IU_LEN];
53 enum viosrp_crq_formats {
54 VIOSRP_SRP_FORMAT = 0x01,
55 VIOSRP_MAD_FORMAT = 0x02,
56 VIOSRP_OS400_FORMAT = 0x03,
57 VIOSRP_AIX_FORMAT = 0x04,
58 VIOSRP_LINUX_FORMAT = 0x06,
59 VIOSRP_INLINE_FORMAT = 0x07
62 struct viosrp_crq {
63 u8 valid; /* used by RPA */
64 u8 format; /* SCSI vs out-of-band */
65 u8 reserved;
66 u8 status; /* non-scsi failure? (e.g. DMA failure) */
67 u16 timeout; /* in seconds */
68 u16 IU_length; /* in bytes */
69 u64 IU_data_ptr; /* the TCE for transferring data */
72 /* MADs are Management requests above and beyond the IUs defined in the SRP
73 * standard.
75 enum viosrp_mad_types {
76 VIOSRP_EMPTY_IU_TYPE = 0x01,
77 VIOSRP_ERROR_LOG_TYPE = 0x02,
78 VIOSRP_ADAPTER_INFO_TYPE = 0x03,
79 VIOSRP_HOST_CONFIG_TYPE = 0x04
82 /*
83 * Common MAD header
85 struct mad_common {
86 u32 type;
87 u16 status;
88 u16 length;
89 u64 tag;
93 * All SRP (and MAD) requests normally flow from the
94 * client to the server. There is no way for the server to send
95 * an asynchronous message back to the client. The Empty IU is used
96 * to hang out a meaningless request to the server so that it can respond
97 * asynchrouously with something like a SCSI AER
99 struct viosrp_empty_iu {
100 struct mad_common common;
101 u64 buffer;
102 u32 port;
105 struct viosrp_error_log {
106 struct mad_common common;
107 u64 buffer;
110 struct viosrp_adapter_info {
111 struct mad_common common;
112 u64 buffer;
115 struct viosrp_host_config {
116 struct mad_common common;
117 u64 buffer;
120 union mad_iu {
121 struct viosrp_empty_iu empty_iu;
122 struct viosrp_error_log error_log;
123 struct viosrp_adapter_info adapter_info;
124 struct viosrp_host_config host_config;
127 union viosrp_iu {
128 union srp_iu srp;
129 union mad_iu mad;
132 struct mad_adapter_info_data {
133 char srp_version[8];
134 char partition_name[96];
135 u32 partition_number;
136 u32 mad_version;
137 u32 os_type;
138 u32 port_max_txu[8]; /* per-port maximum transfer */
141 #endif