1/*
2 * Structures and definitions for SCSI commands to the SG passthrough device.
3 */
4
5#ifndef _SCSI_SG_H
6#define _SCSI_SG_H
7
8#define SGIOC '"'
9#define SG_SET_TIMEOUT _IOW(SGIOC, 0x01, u_int)
10#define SG_GET_TIMEOUT _IO(SGIOC, 0x02)
11#define SG_EMULATED_HOST _IOR(SGIOC, 0x03, int)
12#define SG_SET_TRANSFORM _IO(SGIOC, 0x04)
13#define SG_GET_TRANSFORM _IO(SGIOC, 0x05)
14#define SG_GET_COMMAND_Q _IOW(SGIOC, 0x70, int)
15#define SG_SET_COMMAND_Q _IOR(SGIOC, 0x71, int)
16#define SG_GET_RESERVED_SIZE _IOR(SGIOC, 0x72, int)
17#define SG_SET_RESERVED_SIZE _IOW(SGIOC, 0x75, int)
18#define SG_GET_SCSI_ID _IOR(SGIOC, 0x76, struct sg_scsi_id)
19#define SG_SET_FORCE_LOW_DMA _IOW(SGIOC, 0x79, int)
20#define SG_GET_LOW_DMA _IOR(SGIOC, 0x7a, int)
21#define SG_SET_FORCE_PACK_ID _IOW(SGIOC, 0x7b, int)
22#define SG_GET_PACK_ID _IOR(SGIOC, 0x7c, int)
23#define SG_GET_NUM_WAITING _IOR(SGIOC, 0x7d, int)
24#define SG_SET_DEBUG _IOW(SGIOC, 0x7e, int)
25#define SG_GET_SG_TABLESIZE _IOR(SGIOC, 0x7f, int)
26#define SG_GET_VERSION_NUM _IOR(SGIOC, 0x82, int)
27#define SG_NEXT_CMD_LEN _IOW(SGIOC, 0x83, int)
28#define SG_SCSI_RESET _IOW(SGIOC, 0x84, int)
29#define SG_IO _IOWR(SGIOC, 0x85, struct sg_io_hdr)
30#define SG_GET_REQUEST_TABLE _IO(SGIOC, 0x86)
31#define SG_SET_KEEP_ORPHAN _IOW(SGIOC, 0x87, int)
32#define SG_GET_KEEP_ORPHAN _IOR(SGIOC, 0x88, int)
33#define SG_GET_ACCESS_COUNT _IOR(SGIOC, 0x89, int)
34
35struct sg_io_hdr {
36 int interface_id;
37 int dxfer_direction;
38 u_char cmd_len;
39 u_char mx_sb_len;
40 u_short iovec_count;
41 u_int dxfer_len;
42 void *dxferp;
43 u_char *cmdp;
44 u_char *sbp;
45 u_int timeout;
46 u_int flags;
47 int pack_id;
48 void *usr_ptr;
49 u_char status;
50 u_char masked_status;
51 u_char msg_status;
52 u_char sb_len_wr;
53 u_short host_status;
54 u_short driver_status;
55 int resid;
56 u_int duration;
57 u_int info;
58};
59
60struct sg_io_hdr32 {
61 int interface_id;
62 int dxfer_direction;
63 u_char cmd_len;
64 u_char mx_sb_len;
65 u_short iovec_count;
66 u_int dxfer_len;
67 uint32_t dxferp;
68 uint32_t cmdp;
69 uint32_t sbp;
70 u_int timeout;
71 u_int flags;
72 int pack_id;
73 uint32_t usr_ptr;
74 u_char status;
75 u_char masked_status;
76 u_char msg_status;
77 u_char sb_len_wr;
78 u_short host_status;
79 u_short driver_status;
80 int resid;
81 u_int duration;
82 u_int info;
83};
84
85#define SG_DXFER_NONE -1
86#define SG_DXFER_TO_DEV -2
87#define SG_DXFER_FROM_DEV -3
88#define SG_DXFER_TO_FROM_DEV -4
89#define SG_DXFER_UNKNOWN -5
90
91#define SG_MAX_SENSE 16
92struct sg_header {
93 int pack_len;
94 int reply_len;
95 int pack_id;
96 int result;
97 u_int twelve_byte:1;
98 u_int target_status:5;
99 u_int host_status:8;
100 u_int driver_status:8;
101 u_int other_flags:10;
102 u_char sense_buffer[SG_MAX_SENSE];
103};
104
105struct sg_scsi_id {
106 int host_no;
107 int channel;
108 int scsi_id;
109 int lun;
110 int scsi_type;
111 short h_cmd_per_lun;
112 short d_queue_depth;
113 int unused[2];
114};
115
116struct scsi_idlun {
117 uint32_t dev_id;
118 uint32_t host_unique_id;
119};
120
121/*
122 * Host codes
123 */
124#define DID_OK 0x00 /* OK */
125#define DID_NO_CONNECT 0x01 /* timeout during connect */
126#define DID_BUS_BUSY 0x02 /* timeout during command */
127#define DID_TIME_OUT 0x03 /* other timeout */
128#define DID_BAD_TARGET 0x04 /* bad target */
129#define DID_ABORT 0x05 /* abort */
130#define DID_PARITY 0x06 /* parity error */
131#define DID_ERROR 0x07 /* internal error */
132#define DID_RESET 0x08 /* reset by somebody */
133#define DID_BAD_INTR 0x09 /* unexpected interrupt */
134#define DID_PASSTHROUGH 0x0a /* passthrough */
135#define DID_SOFT_ERROR 0x0b /* low driver wants retry */
136#define DID_IMM_RETRY 0x0c /* retry without decreasing retrycnt */
137
138/*
139 * Driver codes
140 */
141#define DRIVER_OK 0x00
142#define DRIVER_BUSY 0x01
143#define DRIVER_SOFT 0x02
144#define DRIVER_MEDIA 0x03
145#define DRIVER_ERROR 0x04
146
147#define DRIVER_INVALID 0x05
148#define DRIVER_TIMEOUT 0x06
149#define DRIVER_HARD 0x07
150#define DRIVER_SENSE 0x08
151
152#define SUGGEST_RETRY 0x10
153#define SUGGEST_ABORT 0x20
154#define SUGGEST_REMAP 0x30
155#define SUGGEST_DIE 0x40
156#define SUGGEST_SENSE 0x80
157#define SUGGEST_IS_OK 0xff
158
159#define DRIVER_MASK 0x0f
160#define SUGGEST_MASK 0xf0
161
162/* Other definitions */
163/* HZ isn't always available, so simulate it */
164#define SG_DEFAULT_HZ 1000
165#define SG_DEFAULT_TIMEOUT (60*SG_DEFAULT_HZ)
166
167#endif /* !_SCSI_SG_H */