transport.h
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#ifndef _TRANSPORT_H_
#define _TRANSPORT_H_
#include <linux/blkdev.h>
/* 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
#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 */
__u8 Filler[18];
};
#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
/* usb_stor_bulk_transfer_xxx() return codes, in order of severity */
#define USB_STOR_XFER_GOOD 0 /* good transfer */
#define USB_STOR_XFER_SHORT 1 /* transferred less than expected */
#define USB_STOR_XFER_STALLED 2 /* endpoint stalled */
#define USB_STOR_XFER_LONG 3 /* device tried to send too much */
#define USB_STOR_XFER_ERROR 4 /* transfer died in the middle */
/* Transport return codes */
#define USB_STOR_TRANSPORT_GOOD 0 /* Transport good, command good */
#define USB_STOR_TRANSPORT_FAILED 1 /* Transport good, command failed */
#define USB_STOR_TRANSPORT_NO_SENSE 2 /* Command failed, no auto-sense */
#define USB_STOR_TRANSPORT_ERROR 3 /* Transport bad (i.e. device dead) */
/*
* We used to have USB_STOR_XFER_ABORTED and USB_STOR_TRANSPORT_ABORTED
* return codes. But now the transport and low-level transfer routines
* treat an abort as just another error (-ENOENT for a cancelled URB).
* It is up to the invoke_transport() function to test for aborts and
* distinguish them from genuine communication errors.
*/
/* CBI accept device specific command */
#define US_CBI_ADSC 0
extern int usb_stor_Bulk_transport(struct scsi_cmnd *, struct us_data*);
extern int usb_stor_Bulk_max_lun(struct us_data *);
extern int usb_stor_Bulk_reset(struct us_data *);
extern void usb_stor_print_cmd(struct scsi_cmnd *);
extern void usb_stor_invoke_transport(struct scsi_cmnd *, struct us_data*);
extern void usb_stor_stop_transport(struct us_data *);
extern int usb_stor_control_msg(struct us_data *us, unsigned int pipe,
u8 request, u8 requesttype, u16 value, u16 index,
void *data, u16 size, int timeout);
extern int usb_stor_clear_halt(struct us_data *us, unsigned int pipe);
extern int usb_stor_bulk_transfer_buf(struct us_data *us, unsigned int pipe,
void *buf, unsigned int length, unsigned int *act_len);
extern int usb_stor_bulk_transfer_sg(struct us_data *us, unsigned int pipe,
void *buf, unsigned int length, int use_sg, int *residual);
extern int usb_stor_bulk_srb(struct us_data *us, unsigned int pipe,
struct scsi_cmnd *srb);
extern int usb_stor_port_reset(struct us_data *us);
/* Protocol handling routines */
enum xfer_buf_dir {TO_XFER_BUF, FROM_XFER_BUF};
extern unsigned int usb_stor_access_xfer_buf(struct us_data*,
unsigned char *buffer, unsigned int buflen, struct scsi_cmnd *srb,
struct scatterlist **, unsigned int *offset, enum xfer_buf_dir dir);
extern void usb_stor_set_xfer_buf(struct us_data*, unsigned char *buffer,
unsigned int buflen, struct scsi_cmnd *srb,
unsigned int dir);
/*
* ENE scsi function
*/
extern void ENE_stor_invoke_transport(struct scsi_cmnd *, struct us_data *);
extern int ENE_InitMedia(struct us_data *);
extern int ENE_SMInit(struct us_data *);
extern int ENE_SendScsiCmd(struct us_data*, BYTE, void*, int);
extern int ENE_LoadBinCode(struct us_data*, BYTE);
extern int ENE_Read_BYTE(struct us_data*, WORD index, void *buf);
extern int ENE_Read_Data(struct us_data*, void *buf, unsigned int length);
extern int ENE_Write_Data(struct us_data*, void *buf, unsigned int length);
extern void BuildSenseBuffer(struct scsi_cmnd *, int);
/*
* ENE scsi function
*/
extern int SM_SCSIIrp(struct us_data *us, struct scsi_cmnd *srb);
#endif