mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-11 19:56:49 +07:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
75 lines
2.9 KiB
C
75 lines
2.9 KiB
C
/* Driver for USB Mass Storage compliant devices
|
|
* Protocol Functions Header File
|
|
*
|
|
* $Id: protocol.h,v 1.4 2001/02/13 07:10:03 mdharm Exp $
|
|
*
|
|
* Current development and maintenance by:
|
|
* (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
|
|
*
|
|
* This driver is based on the 'USB Mass Storage Class' document. This
|
|
* describes in detail the protocol used to communicate with such
|
|
* devices. Clearly, the designers had SCSI and ATAPI commands in
|
|
* mind when they created this document. The commands are all very
|
|
* similar to commands in the SCSI-II and ATAPI specifications.
|
|
*
|
|
* It is important to note that in a number of cases this class
|
|
* exhibits class-specific exemptions from the USB specification.
|
|
* Notably the usage of NAK, STALL and ACK differs from the norm, in
|
|
* that they are used to communicate wait, failed and OK on commands.
|
|
*
|
|
* Also, for certain devices, the interrupt endpoint is used to convey
|
|
* status of a command.
|
|
*
|
|
* Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more
|
|
* information about this driver.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2, or (at your option) any
|
|
* later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef _PROTOCOL_H_
|
|
#define _PROTOCOL_H_
|
|
|
|
/* Sub Classes */
|
|
|
|
#define US_SC_RBC 0x01 /* Typically, flash devices */
|
|
#define US_SC_8020 0x02 /* CD-ROM */
|
|
#define US_SC_QIC 0x03 /* QIC-157 Tapes */
|
|
#define US_SC_UFI 0x04 /* Floppy */
|
|
#define US_SC_8070 0x05 /* Removable media */
|
|
#define US_SC_SCSI 0x06 /* Transparent */
|
|
#define US_SC_ISD200 0x07 /* ISD200 ATA */
|
|
#define US_SC_MIN US_SC_RBC
|
|
#define US_SC_MAX US_SC_ISD200
|
|
|
|
#define US_SC_DEVICE 0xff /* Use device's value */
|
|
|
|
/* Protocol handling routines */
|
|
extern void usb_stor_ATAPI_command(struct scsi_cmnd*, struct us_data*);
|
|
extern void usb_stor_qic157_command(struct scsi_cmnd*, struct us_data*);
|
|
extern void usb_stor_ufi_command(struct scsi_cmnd*, struct us_data*);
|
|
extern void usb_stor_transparent_scsi_command(struct scsi_cmnd*,
|
|
struct us_data*);
|
|
|
|
/* struct scsi_cmnd transfer buffer access utilities */
|
|
enum xfer_buf_dir {TO_XFER_BUF, FROM_XFER_BUF};
|
|
|
|
extern unsigned int usb_stor_access_xfer_buf(unsigned char *buffer,
|
|
unsigned int buflen, struct scsi_cmnd *srb, unsigned int *index,
|
|
unsigned int *offset, enum xfer_buf_dir dir);
|
|
|
|
extern void usb_stor_set_xfer_buf(unsigned char *buffer,
|
|
unsigned int buflen, struct scsi_cmnd *srb);
|
|
#endif
|