linux-stable/include/linux/usb/uas.h
Hans de Goede d24354bbf7 uas: Pack iu struct definitions
The iu struct definitions are usb packet definitions, so no alignment should
happen. Notice that assuming 32 bit alignment this does not make any
difference at all.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2014-03-04 15:38:11 -08:00

109 lines
2 KiB
C

#ifndef __USB_UAS_H__
#define __USB_UAS_H__
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
/* Common header for all IUs */
struct iu {
__u8 iu_id;
__u8 rsvd1;
__be16 tag;
} __attribute__((__packed__));
enum {
IU_ID_COMMAND = 0x01,
IU_ID_STATUS = 0x03,
IU_ID_RESPONSE = 0x04,
IU_ID_TASK_MGMT = 0x05,
IU_ID_READ_READY = 0x06,
IU_ID_WRITE_READY = 0x07,
};
enum {
TMF_ABORT_TASK = 0x01,
TMF_ABORT_TASK_SET = 0x02,
TMF_CLEAR_TASK_SET = 0x04,
TMF_LOGICAL_UNIT_RESET = 0x08,
TMF_I_T_NEXUS_RESET = 0x10,
TMF_CLEAR_ACA = 0x40,
TMF_QUERY_TASK = 0x80,
TMF_QUERY_TASK_SET = 0x81,
TMF_QUERY_ASYNC_EVENT = 0x82,
};
enum {
RC_TMF_COMPLETE = 0x00,
RC_INVALID_INFO_UNIT = 0x02,
RC_TMF_NOT_SUPPORTED = 0x04,
RC_TMF_FAILED = 0x05,
RC_TMF_SUCCEEDED = 0x08,
RC_INCORRECT_LUN = 0x09,
RC_OVERLAPPED_TAG = 0x0a,
};
struct command_iu {
__u8 iu_id;
__u8 rsvd1;
__be16 tag;
__u8 prio_attr;
__u8 rsvd5;
__u8 len;
__u8 rsvd7;
struct scsi_lun lun;
__u8 cdb[16]; /* XXX: Overflow-checking tools may misunderstand */
} __attribute__((__packed__));
struct task_mgmt_iu {
__u8 iu_id;
__u8 rsvd1;
__be16 tag;
__u8 function;
__u8 rsvd2;
__be16 task_tag;
struct scsi_lun lun;
} __attribute__((__packed__));
/*
* Also used for the Read Ready and Write Ready IUs since they have the
* same first four bytes
*/
struct sense_iu {
__u8 iu_id;
__u8 rsvd1;
__be16 tag;
__be16 status_qual;
__u8 status;
__u8 rsvd7[7];
__be16 len;
__u8 sense[SCSI_SENSE_BUFFERSIZE];
} __attribute__((__packed__));
struct response_iu {
__u8 iu_id;
__u8 rsvd1;
__be16 tag;
__u8 add_response_info[3];
__u8 response_code;
} __attribute__((__packed__));
struct usb_pipe_usage_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bPipeID;
__u8 Reserved;
} __attribute__((__packed__));
enum {
CMD_PIPE_ID = 1,
STATUS_PIPE_ID = 2,
DATA_IN_PIPE_ID = 3,
DATA_OUT_PIPE_ID = 4,
UAS_SIMPLE_TAG = 0,
UAS_HEAD_TAG = 1,
UAS_ORDERED_TAG = 2,
UAS_ACA = 4,
};
#endif