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linux-4.9.59+gitAUTOINC+a75d8e9305-ga75d8e9305
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include
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uapi
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linux
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bsg.h

bsg.h 2.4 KB
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  1. #ifndef _UAPIBSG_H
    2. 

  2. #define _UAPIBSG_H
    3. 

  3. 

  4. #include <linux/types.h>
    5. 

  5. 

  6. #define BSG_PROTOCOL_SCSI		0
    7. 

  7. 

  8. #define BSG_SUB_PROTOCOL_SCSI_CMD	0
    9. 

  9. #define BSG_SUB_PROTOCOL_SCSI_TMF	1
    10. 

  10. #define BSG_SUB_PROTOCOL_SCSI_TRANSPORT	2
    11. 

  11. 

  12. /*
    13. 

  13.  * For flag constants below:
    14. 

  14.  * sg.h sg_io_hdr also has bits defined for it's flags member. These
    15. 

  15.  * two flag values (0x10 and 0x20) have the same meaning in sg.h . For
    16. 

  16.  * bsg the BSG_FLAG_Q_AT_HEAD flag is ignored since it is the deafult.
    17. 

  17.  */
    18. 

  18. #define BSG_FLAG_Q_AT_TAIL 0x10 /* default is Q_AT_HEAD */
    19. 

  19. #define BSG_FLAG_Q_AT_HEAD 0x20
    20. 

  20. 

  21. struct sg_io_v4 {
    22. 

  22. 	__s32 guard;		/* [i] 'Q' to differentiate from v3 */
    23. 

  23. 	__u32 protocol;		/* [i] 0 -> SCSI , .... */
    24. 

  24. 	__u32 subprotocol;	/* [i] 0 -> SCSI command, 1 -> SCSI task
    25. 

  25. 				   management function, .... */
    26. 

  26. 

  27. 	__u32 request_len;	/* [i] in bytes */
    28. 

  28. 	__u64 request;		/* [i], [*i] {SCSI: cdb} */
    29. 

  29. 	__u64 request_tag;	/* [i] {SCSI: task tag (only if flagged)} */
    30. 

  30. 	__u32 request_attr;	/* [i] {SCSI: task attribute} */
    31. 

  31. 	__u32 request_priority;	/* [i] {SCSI: task priority} */
    32. 

  32. 	__u32 request_extra;	/* [i] {spare, for padding} */
    33. 

  33. 	__u32 max_response_len;	/* [i] in bytes */
    34. 

  34. 	__u64 response;		/* [i], [*o] {SCSI: (auto)sense data} */
    35. 

  35. 

  36.         /* "dout_": data out (to device); "din_": data in (from device) */
    37. 

  37. 	__u32 dout_iovec_count;	/* [i] 0 -> "flat" dout transfer else
    38. 

  38. 				   dout_xfer points to array of iovec */
    39. 

  39. 	__u32 dout_xfer_len;	/* [i] bytes to be transferred to device */
    40. 

  40. 	__u32 din_iovec_count;	/* [i] 0 -> "flat" din transfer */
    41. 

  41. 	__u32 din_xfer_len;	/* [i] bytes to be transferred from device */
    42. 

  42. 	__u64 dout_xferp;	/* [i], [*i] */
    43. 

  43. 	__u64 din_xferp;	/* [i], [*o] */
    44. 

  44. 

  45. 	__u32 timeout;		/* [i] units: millisecond */
    46. 

  46. 	__u32 flags;		/* [i] bit mask */
    47. 

  47. 	__u64 usr_ptr;		/* [i->o] unused internally */
    48. 

  48. 	__u32 spare_in;		/* [i] */
    49. 

  49. 

  50. 	__u32 driver_status;	/* [o] 0 -> ok */
    51. 

  51. 	__u32 transport_status;	/* [o] 0 -> ok */
    52. 

  52. 	__u32 device_status;	/* [o] {SCSI: command completion status} */
    53. 

  53. 	__u32 retry_delay;	/* [o] {SCSI: status auxiliary information} */
    54. 

  54. 	__u32 info;		/* [o] additional information */
    55. 

  55. 	__u32 duration;		/* [o] time to complete, in milliseconds */
    56. 

  56. 	__u32 response_len;	/* [o] bytes of response actually written */
    57. 

  57. 	__s32 din_resid;	/* [o] din_xfer_len - actual_din_xfer_len */
    58. 

  58. 	__s32 dout_resid;	/* [o] dout_xfer_len - actual_dout_xfer_len */
    59. 

  59. 	__u64 generated_tag;	/* [o] {SCSI: transport generated task tag} */
    60. 

  60. 	__u32 spare_out;	/* [o] */
    61. 

  61. 

  62. 	__u32 padding;
    63. 

  63. };
    64. 

  64. 

  65. 

  66. #endif /* _UAPIBSG_H */
    67.