1 #ifndef BSG_H 2 #define BSG_H 3 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 10 struct sg_io_v4 { 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 14 management function, .... */ 15 16 __u32 request_len; /* [i] in bytes */ 17 __u64 request; /* [i], [*i] {SCSI: cdb} */ 18 __u32 request_attr; /* [i] {SCSI: task attribute} */ 19 __u32 request_tag; /* [i] {SCSI: task tag (only if flagged)} */ 20 __u32 request_priority; /* [i] {SCSI: task priority} */ 21 __u32 max_response_len; /* [i] in bytes */ 22 __u64 response; /* [i], [*o] {SCSI: (auto)sense data} */ 23 24 /* "din_" for data in (from device); "dout_" for data out (to device) */ 25 __u32 dout_xfer_len; /* [i] bytes to be transferred to device */ 26 __u32 din_xfer_len; /* [i] bytes to be transferred from device */ 27 __u64 dout_xferp; /* [i], [*i] */ 28 __u64 din_xferp; /* [i], [*o] */ 29 30 __u32 timeout; /* [i] units: millisecond */ 31 __u32 flags; /* [i] bit mask */ 32 __u64 usr_ptr; /* [i->o] unused internally */ 33 __u32 spare_in; /* [i] */ 34 35 __u32 driver_status; /* [o] 0 -> ok */ 36 __u32 transport_status; /* [o] 0 -> ok */ 37 __u32 device_status; /* [o] {SCSI: command completion status} */ 38 __u32 retry_delay; /* [o] {SCSI: status auxiliary information} */ 39 __u32 info; /* [o] additional information */ 40 __u32 duration; /* [o] time to complete, in milliseconds */ 41 __u32 response_len; /* [o] bytes of response actually written */ 42 __s32 din_resid; /* [o] actual_din_xfer_len - din_xfer_len */ 43 __u32 generated_tag; /* [o] {SCSI: task tag that transport chose} */ 44 __u32 spare_out; /* [o] */ 45 46 __u32 padding; 47 }; 48 49 #ifdef __KERNEL__ 50 51 #if defined(CONFIG_BLK_DEV_BSG) 52 struct bsg_class_device { 53 struct class_device *class_dev; 54 struct device *dev; 55 int minor; 56 struct request_queue *queue; 57 }; 58 59 extern int bsg_register_queue(struct request_queue *, struct device *, const char *); 60 extern void bsg_unregister_queue(struct request_queue *); 61 #else 62 static inline int bsg_register_queue(struct request_queue * rq, struct device *dev, const char *name) 63 { 64 return 0; 65 } 66 static inline void bsg_unregister_queue(struct request_queue *rq) 67 { 68 } 69 #endif 70 71 #endif /* __KERNEL__ */ 72 73 #endif 74