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Commit | Line | Data |
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3d6392cf JA |
1 | #ifndef BSG_H |
2 | #define BSG_H | |
3 | ||
15d10b61 FT |
4 | #define BSG_PROTOCOL_SCSI 0 |
5 | ||
6 | #define BSG_SUB_PROTOCOL_SCSI_CMD 0 | |
7 | #define BSG_SUB_PROTOCOL_SCSI_TMF 1 | |
8 | #define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2 | |
9 | ||
45977d0e | 10 | struct sg_io_v4 { |
3862153b FT |
11 | __s32 guard; /* [i] 'Q' to differentiate from v3 */ |
12 | __u32 protocol; /* [i] 0 -> SCSI , .... */ | |
13 | __u32 subprotocol; /* [i] 0 -> SCSI command, 1 -> SCSI task | |
45977d0e FT |
14 | management function, .... */ |
15 | ||
3862153b FT |
16 | __u32 request_len; /* [i] in bytes */ |
17 | __u64 request; /* [i], [*i] {SCSI: cdb} */ | |
0c6a89ba | 18 | __u64 request_tag; /* [i] {SCSI: task tag (only if flagged)} */ |
3862153b | 19 | __u32 request_attr; /* [i] {SCSI: task attribute} */ |
3862153b | 20 | __u32 request_priority; /* [i] {SCSI: task priority} */ |
0c6a89ba | 21 | __u32 request_extra; /* [i] {spare, for padding} */ |
3862153b FT |
22 | __u32 max_response_len; /* [i] in bytes */ |
23 | __u64 response; /* [i], [*o] {SCSI: (auto)sense data} */ | |
45977d0e | 24 | |
0c6a89ba FT |
25 | /* "dout_": data out (to device); "din_": data in (from device) */ |
26 | __u32 dout_iovec_count; /* [i] 0 -> "flat" dout transfer else | |
27 | dout_xfer points to array of iovec */ | |
3862153b | 28 | __u32 dout_xfer_len; /* [i] bytes to be transferred to device */ |
0c6a89ba | 29 | __u32 din_iovec_count; /* [i] 0 -> "flat" din transfer */ |
3862153b FT |
30 | __u32 din_xfer_len; /* [i] bytes to be transferred from device */ |
31 | __u64 dout_xferp; /* [i], [*i] */ | |
32 | __u64 din_xferp; /* [i], [*o] */ | |
45977d0e | 33 | |
3862153b FT |
34 | __u32 timeout; /* [i] units: millisecond */ |
35 | __u32 flags; /* [i] bit mask */ | |
36 | __u64 usr_ptr; /* [i->o] unused internally */ | |
37 | __u32 spare_in; /* [i] */ | |
45977d0e | 38 | |
3862153b FT |
39 | __u32 driver_status; /* [o] 0 -> ok */ |
40 | __u32 transport_status; /* [o] 0 -> ok */ | |
41 | __u32 device_status; /* [o] {SCSI: command completion status} */ | |
42 | __u32 retry_delay; /* [o] {SCSI: status auxiliary information} */ | |
43 | __u32 info; /* [o] additional information */ | |
44 | __u32 duration; /* [o] time to complete, in milliseconds */ | |
45 | __u32 response_len; /* [o] bytes of response actually written */ | |
0c6a89ba FT |
46 | __s32 din_resid; /* [o] din_xfer_len - actual_din_xfer_len */ |
47 | __s32 dout_resid; /* [o] dout_xfer_len - actual_dout_xfer_len */ | |
48 | __u64 generated_tag; /* [o] {SCSI: transport generated task tag} */ | |
3862153b | 49 | __u32 spare_out; /* [o] */ |
45977d0e | 50 | |
3862153b | 51 | __u32 padding; |
45977d0e FT |
52 | }; |
53 | ||
54 | #ifdef __KERNEL__ | |
55 | ||
3d6392cf JA |
56 | #if defined(CONFIG_BLK_DEV_BSG) |
57 | struct bsg_class_device { | |
ee959b00 | 58 | struct device *class_dev; |
97f46ae4 | 59 | struct device *parent; |
3d6392cf | 60 | int minor; |
d351af01 | 61 | struct request_queue *queue; |
97f46ae4 FT |
62 | struct kref ref; |
63 | void (*release)(struct device *); | |
3d6392cf JA |
64 | }; |
65 | ||
97f46ae4 FT |
66 | extern int bsg_register_queue(struct request_queue *q, |
67 | struct device *parent, const char *name, | |
68 | void (*release)(struct device *)); | |
d351af01 | 69 | extern void bsg_unregister_queue(struct request_queue *); |
3d6392cf | 70 | #else |
97f46ae4 FT |
71 | static inline int bsg_register_queue(struct request_queue *q, |
72 | struct device *parent, const char *name, | |
73 | void (*release)(struct device *)) | |
a4ee0df8 JB |
74 | { |
75 | return 0; | |
76 | } | |
97f46ae4 | 77 | static inline void bsg_unregister_queue(struct request_queue *q) |
a4ee0df8 JB |
78 | { |
79 | } | |
3d6392cf JA |
80 | #endif |
81 | ||
45977d0e FT |
82 | #endif /* __KERNEL__ */ |
83 | ||
3d6392cf | 84 | #endif |