diff options
Diffstat (limited to 'drivers/scsi/ibmvscsi/viosrp.h')
-rw-r--r-- | drivers/scsi/ibmvscsi/viosrp.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/scsi/ibmvscsi/viosrp.h b/drivers/scsi/ibmvscsi/viosrp.h new file mode 100644 index 000000000000..6a6bba8a2f34 --- /dev/null +++ b/drivers/scsi/ibmvscsi/viosrp.h | |||
@@ -0,0 +1,126 @@ | |||
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 "srp.h" | ||
37 | |||
38 | enum viosrp_crq_formats { | ||
39 | VIOSRP_SRP_FORMAT = 0x01, | ||
40 | VIOSRP_MAD_FORMAT = 0x02, | ||
41 | VIOSRP_OS400_FORMAT = 0x03, | ||
42 | VIOSRP_AIX_FORMAT = 0x04, | ||
43 | VIOSRP_LINUX_FORMAT = 0x06, | ||
44 | VIOSRP_INLINE_FORMAT = 0x07 | ||
45 | }; | ||
46 | |||
47 | struct viosrp_crq { | ||
48 | u8 valid; /* used by RPA */ | ||
49 | u8 format; /* SCSI vs out-of-band */ | ||
50 | u8 reserved; | ||
51 | u8 status; /* non-scsi failure? (e.g. DMA failure) */ | ||
52 | u16 timeout; /* in seconds */ | ||
53 | u16 IU_length; /* in bytes */ | ||
54 | u64 IU_data_ptr; /* the TCE for transferring data */ | ||
55 | }; | ||
56 | |||
57 | /* MADs are Management requests above and beyond the IUs defined in the SRP | ||
58 | * standard. | ||
59 | */ | ||
60 | enum viosrp_mad_types { | ||
61 | VIOSRP_EMPTY_IU_TYPE = 0x01, | ||
62 | VIOSRP_ERROR_LOG_TYPE = 0x02, | ||
63 | VIOSRP_ADAPTER_INFO_TYPE = 0x03, | ||
64 | VIOSRP_HOST_CONFIG_TYPE = 0x04 | ||
65 | }; | ||
66 | |||
67 | /* | ||
68 | * Common MAD header | ||
69 | */ | ||
70 | struct mad_common { | ||
71 | u32 type; | ||
72 | u16 status; | ||
73 | u16 length; | ||
74 | u64 tag; | ||
75 | }; | ||
76 | |||
77 | /* | ||
78 | * All SRP (and MAD) requests normally flow from the | ||
79 | * client to the server. There is no way for the server to send | ||
80 | * an asynchronous message back to the client. The Empty IU is used | ||
81 | * to hang out a meaningless request to the server so that it can respond | ||
82 | * asynchrouously with something like a SCSI AER | ||
83 | */ | ||
84 | struct viosrp_empty_iu { | ||
85 | struct mad_common common; | ||
86 | u64 buffer; | ||
87 | u32 port; | ||
88 | }; | ||
89 | |||
90 | struct viosrp_error_log { | ||
91 | struct mad_common common; | ||
92 | u64 buffer; | ||
93 | }; | ||
94 | |||
95 | struct viosrp_adapter_info { | ||
96 | struct mad_common common; | ||
97 | u64 buffer; | ||
98 | }; | ||
99 | |||
100 | struct viosrp_host_config { | ||
101 | struct mad_common common; | ||
102 | u64 buffer; | ||
103 | }; | ||
104 | |||
105 | union mad_iu { | ||
106 | struct viosrp_empty_iu empty_iu; | ||
107 | struct viosrp_error_log error_log; | ||
108 | struct viosrp_adapter_info adapter_info; | ||
109 | struct viosrp_host_config host_config; | ||
110 | }; | ||
111 | |||
112 | union viosrp_iu { | ||
113 | union srp_iu srp; | ||
114 | union mad_iu mad; | ||
115 | }; | ||
116 | |||
117 | struct mad_adapter_info_data { | ||
118 | char srp_version[8]; | ||
119 | char partition_name[96]; | ||
120 | u32 partition_number; | ||
121 | u32 mad_version; | ||
122 | u32 os_type; | ||
123 | u32 port_max_txu[8]; /* per-port maximum transfer */ | ||
124 | }; | ||
125 | |||
126 | #endif | ||