diff options
Diffstat (limited to 'include/linux/usb/storage.h')
| -rw-r--r-- | include/linux/usb/storage.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/usb/storage.h b/include/linux/usb/storage.h index d7fc910f1dc4..cb33fff2ba0b 100644 --- a/include/linux/usb/storage.h +++ b/include/linux/usb/storage.h @@ -45,4 +45,42 @@ #define USB_PR_DEVICE 0xff /* Use device's value */ + /* + * Bulk only data structures + */ + +/* command block wrapper */ +struct bulk_cb_wrap { + __le32 Signature; /* contains 'USBC' */ + __u32 Tag; /* unique per command id */ + __le32 DataTransferLength; /* size of data */ + __u8 Flags; /* direction in bit 0 */ + __u8 Lun; /* LUN normally 0 */ + __u8 Length; /* of of the CDB */ + __u8 CDB[16]; /* max command */ +}; + +#define US_BULK_CB_WRAP_LEN 31 +#define US_BULK_CB_SIGN 0x43425355 /*spells out USBC */ +#define US_BULK_FLAG_IN (1 << 7) +#define US_BULK_FLAG_OUT 0 + +/* command status wrapper */ +struct bulk_cs_wrap { + __le32 Signature; /* should = 'USBS' */ + __u32 Tag; /* same as original command */ + __le32 Residue; /* amount not transferred */ + __u8 Status; /* see below */ +}; + +#define US_BULK_CS_WRAP_LEN 13 +#define US_BULK_CS_SIGN 0x53425355 /* spells out 'USBS' */ +#define US_BULK_STAT_OK 0 +#define US_BULK_STAT_FAIL 1 +#define US_BULK_STAT_PHASE 2 + +/* bulk-only class specific requests */ +#define US_BULK_RESET_REQUEST 0xff +#define US_BULK_GET_MAX_LUN 0xfe + #endif |