1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*****************************************************************************/
/* srp.h -- SCSI RDMA Protocol definitions */
/* */
/* Written By: Colin Devilbis, IBM Corporation */
/* */
/* Copyright (C) 2003 IBM Corporation */
/* */
/* This program is free software; you can redistribute it and/or modify */
/* it under the terms of the GNU General Public License as published by */
/* the Free Software Foundation; either version 2 of the License, or */
/* (at your option) any later version. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with this program; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* */
/* */
/* This file contains structures and definitions for IBM RPA (RS/6000 */
/* platform architecture) implementation of the SRP (SCSI RDMA Protocol) */
/* standard. SRP is used on IBM iSeries and pSeries platforms to send SCSI */
/* commands between logical partitions. */
/* */
/* SRP Information Units (IUs) are sent on a "Command/Response Queue" (CRQ) */
/* between partitions. The definitions in this file are architected, */
/* and cannot be changed without breaking compatibility with other versions */
/* of Linux and other operating systems (AIX, OS/400) that talk this protocol*/
/* between logical partitions */
/*****************************************************************************/
#ifndef VIOSRP_H
#define VIOSRP_H
#include <scsi/srp.h>
#define SRP_VERSION "16.a"
#define SRP_MAX_IU_LEN 256
union srp_iu {
struct srp_login_req login_req;
struct srp_login_rsp login_rsp;
struct srp_login_rej login_rej;
struct srp_i_logout i_logout;
struct srp_t_logout t_logout;
struct srp_tsk_mgmt tsk_mgmt;
struct srp_cmd cmd;
struct srp_rsp rsp;
u8 reserved[SRP_MAX_IU_LEN];
};
enum viosrp_crq_formats {
VIOSRP_SRP_FORMAT = 0x01,
VIOSRP_MAD_FORMAT = 0x02,
VIOSRP_OS400_FORMAT = 0x03,
VIOSRP_AIX_FORMAT = 0x04,
VIOSRP_LINUX_FORMAT = 0x06,
VIOSRP_INLINE_FORMAT = 0x07
};
enum viosrp_crq_status {
VIOSRP_OK = 0x0,
VIOSRP_NONRECOVERABLE_ERR = 0x1,
VIOSRP_VIOLATES_MAX_XFER = 0x2,
VIOSRP_PARTNER_PANIC = 0x3,
VIOSRP_DEVICE_BUSY = 0x8,
VIOSRP_ADAPTER_FAIL = 0x10,
VIOSRP_OK2 = 0x99,
};
struct viosrp_crq {
u8 valid; /* used by RPA */
u8 format; /* SCSI vs out-of-band */
u8 reserved;
u8 status; /* non-scsi failure? (e.g. DMA failure) */
u16 timeout; /* in seconds */
u16 IU_length; /* in bytes */
u64 IU_data_ptr; /* the TCE for transferring data */
};
/* MADs are Management requests above and beyond the IUs defined in the SRP
* standard.
*/
enum viosrp_mad_types {
VIOSRP_EMPTY_IU_TYPE = 0x01,
VIOSRP_ERROR_LOG_TYPE = 0x02,
VIOSRP_ADAPTER_INFO_TYPE = 0x03,
VIOSRP_HOST_CONFIG_TYPE = 0x04
};
/*
* Common MAD header
*/
struct mad_common {
u32 type;
u16 status;
u16 length;
u64 tag;
};
/*
* All SRP (and MAD) requests normally flow from the
* client to the server. There is no way for the server to send
* an asynchronous message back to the client. The Empty IU is used
* to hang out a meaningless request to the server so that it can respond
* asynchrouously with something like a SCSI AER
*/
struct viosrp_empty_iu {
struct mad_common common;
u64 buffer;
u32 port;
};
struct viosrp_error_log {
struct mad_common common;
u64 buffer;
};
struct viosrp_adapter_info {
struct mad_common common;
u64 buffer;
};
struct viosrp_host_config {
struct mad_common common;
u64 buffer;
};
union mad_iu {
struct viosrp_empty_iu empty_iu;
struct viosrp_error_log error_log;
struct viosrp_adapter_info adapter_info;
struct viosrp_host_config host_config;
};
union viosrp_iu {
union srp_iu srp;
union mad_iu mad;
};
struct mad_adapter_info_data {
char srp_version[8];
char partition_name[96];
u32 partition_number;
u32 mad_version;
u32 os_type;
u32 port_max_txu[8]; /* per-port maximum transfer */
};
#endif
|
