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1 | /* |
2 | * SCSI target kernel/user interface |
3 | * |
4 | * Copyright (C) 2005 FUJITA Tomonori <tomof@acm.org> |
5 | * Copyright (C) 2005 Mike Christie <michaelc@cs.wisc.edu> |
6 | * |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU General Public License as |
9 | * published by the Free Software Foundation; either version 2 of the |
10 | * License, or (at your option) any later version. |
11 | * |
12 | * This program is distributed in the hope that it will be useful, but |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | * General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program; if not, write to the Free Software |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
20 | * 02110-1301 USA |
21 | */ |
22 | #ifndef __SCSI_TARGET_IF_H |
23 | #define __SCSI_TARGET_IF_H |
24 | |
25 | /* user -> kernel */ |
26 | #define TGT_UEVENT_CMD_RSP 0x0001 |
27 | #define TGT_UEVENT_IT_NEXUS_RSP 0x0002 |
28 | #define TGT_UEVENT_TSK_MGMT_RSP 0x0003 |
29 | |
30 | /* kernel -> user */ |
31 | #define TGT_KEVENT_CMD_REQ 0x1001 |
32 | #define TGT_KEVENT_CMD_DONE 0x1002 |
33 | #define TGT_KEVENT_IT_NEXUS_REQ 0x1003 |
34 | #define TGT_KEVENT_TSK_MGMT_REQ 0x1004 |
35 | |
36 | struct tgt_event_hdr { |
37 | uint16_t version; |
38 | uint16_t status; |
39 | uint16_t type; |
40 | uint16_t len; |
41 | } __attribute__ ((aligned (sizeof(uint64_t)))); |
42 | |
43 | struct tgt_event { |
44 | struct tgt_event_hdr hdr; |
45 | |
46 | union { |
47 | /* user-> kernel */ |
48 | struct { |
49 | int host_no; |
50 | int result; |
51 | aligned_u64 itn_id; |
52 | aligned_u64 tag; |
53 | aligned_u64 uaddr; |
54 | aligned_u64 sense_uaddr; |
55 | uint32_t len; |
56 | uint32_t sense_len; |
57 | uint8_t rw; |
58 | } cmd_rsp; |
59 | struct { |
60 | int host_no; |
61 | int result; |
62 | aligned_u64 itn_id; |
63 | aligned_u64 mid; |
64 | } tsk_mgmt_rsp; |
65 | struct { |
66 | __s32 host_no; |
67 | __s32 result; |
68 | aligned_u64 itn_id; |
69 | __u32 function; |
70 | } it_nexus_rsp; |
71 | |
72 | /* kernel -> user */ |
73 | struct { |
74 | int host_no; |
75 | uint32_t data_len; |
76 | aligned_u64 itn_id; |
77 | uint8_t scb[16]; |
78 | uint8_t lun[8]; |
79 | int attribute; |
80 | aligned_u64 tag; |
81 | } cmd_req; |
82 | struct { |
83 | int host_no; |
84 | int result; |
85 | aligned_u64 itn_id; |
86 | aligned_u64 tag; |
87 | } cmd_done; |
88 | struct { |
89 | int host_no; |
90 | int function; |
91 | aligned_u64 itn_id; |
92 | aligned_u64 tag; |
93 | uint8_t lun[8]; |
94 | aligned_u64 mid; |
95 | } tsk_mgmt_req; |
96 | struct { |
97 | __s32 host_no; |
98 | __u32 function; |
99 | aligned_u64 itn_id; |
100 | __u32 max_cmds; |
101 | __u8 initiator_id[16]; |
102 | } it_nexus_req; |
103 | } p; |
104 | } __attribute__ ((aligned (sizeof(uint64_t)))); |
105 | |
106 | #define TGT_RING_SIZE (1UL << 16) |
107 | |
108 | #endif |
109 |
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