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
| | #ifndef _SCSI_SG_H
#define _SCSI_SG_H
#define SG_DXFER_NONE -1
#define SG_DXFER_TO_DEV -2
#define SG_DXFER_FROM_DEV -3
#define SG_DXFER_TO_FROM_DEV -4
#define SG_FLAG_DIRECT_IO 1
#define SG_FLAG_LUN_INHIBIT 2
#define SG_FLAG_NO_DXFER 0x10000
#define SG_INFO_OK_MASK 0x1
#define SG_INFO_OK 0x0
#define SG_INFO_CHECK 0x1
#define SG_INFO_DIRECT_IO_MASK 0x6
#define SG_INFO_INDIRECT_IO 0x0
#define SG_INFO_DIRECT_IO 0x2
#define SG_INFO_MIXED_IO 0x4
#define SG_EMULATED_HOST 0x2203
#define SG_SET_TRANSFORM 0x2204
#define SG_GET_TRANSFORM 0x2205
#define SG_SET_RESERVED_SIZE 0x2275
#define SG_GET_RESERVED_SIZE 0x2272
#define SG_GET_SCSI_ID 0x2276
#define SG_SET_FORCE_LOW_DMA 0x2279
#define SG_GET_LOW_DMA 0x227a
#define SG_SET_FORCE_PACK_ID 0x227b
#define SG_GET_PACK_ID 0x227c
#define SG_GET_NUM_WAITING 0x227d
#define SG_GET_SG_TABLESIZE 0x227F
#define SG_GET_VERSION_NUM 0x2282
#define SG_SCSI_RESET 0x2284
#define SG_SCSI_RESET_NOTHING 0
#define SG_SCSI_RESET_DEVICE 1
#define SG_SCSI_RESET_BUS 2
#define SG_SCSI_RESET_HOST 3
#define SG_IO 0x2285
#define SG_GET_REQUEST_TABLE 0x2286
#define SG_SET_KEEP_ORPHAN 0x2287
#define SG_GET_KEEP_ORPHAN 0x2288
#define SG_SCATTER_SZ (8 * 4096)
#define SG_DEFAULT_RETRIES 1
#define SG_DEF_FORCE_LOW_DMA 0
#define SG_DEF_FORCE_PACK_ID 0
#define SG_DEF_KEEP_ORPHAN 0
#define SG_DEF_RESERVED_SIZE SG_SCATTER_SZ
#define SG_MAX_QUEUE 16
#define SG_BIG_BUFF SG_DEF_RESERVED_SIZE
#define SG_MAX_SENSE 16
#define SG_SET_TIMEOUT 0x2201
#define SG_GET_TIMEOUT 0x2202
#define SG_GET_COMMAND_Q 0x2270
#define SG_SET_COMMAND_Q 0x2271
#define SG_SET_DEBUG 0x227e
#define SG_NEXT_CMD_LEN 0x2283
#define SG_DEFAULT_TIMEOUT (60*100) /* 60*HZ */
#define SG_DEF_COMMAND_Q 0
#define SG_DEF_UNDERRUN_FLAG 0
typedef struct sg_iovec {
void *iov_base;
unsigned long iov_len;
} sg_iovec_t;
typedef struct sg_io_hdr {
int interface_id;
int dxfer_direction;
unsigned char cmd_len;
unsigned char mx_sb_len;
unsigned short iovec_count;
unsigned dxfer_len;
void *dxferp;
unsigned char *cmdp;
unsigned char *sbp;
unsigned timeout;
unsigned flags;
int pack_id;
void *usr_ptr;
unsigned char status;
unsigned char masked_status;
unsigned char msg_status;
unsigned char sb_len_wr;
unsigned short host_status;
unsigned short driver_status;
int resid;
unsigned int duration;
unsigned int info;
} sg_io_hdr_t;
struct sg_scsi_id {
int host_no;
int channel;
int scsi_id;
int lun;
int scsi_type;
short h_cmd_per_lun;
short d_queue_depth;
int unused[2];
};
typedef struct sg_req_info {
char req_state;
char orphan;
char sg_io_owned;
char problem;
int pack_id;
void *usr_ptr;
unsigned duration;
int unused;
} sg_req_info_t;
typedef struct sg_io_hdr Sg_io_hdr;
typedef struct sg_io_vec Sg_io_vec;
typedef struct sg_scsi_id Sg_scsi_id;
typedef struct sg_req_info Sg_req_info;
struct sg_header {
int pack_len;
int reply_len;
int pack_id;
int result;
unsigned twelve_byte:1;
unsigned target_status:5;
unsigned host_status:8;
unsigned driver_status:8;
unsigned other_flags:10;
unsigned char sense_buffer[SG_MAX_SENSE];
};
#endif
|