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/* Driver for SCM Microsystems USB-ATAPI cable
* Header File
*
* Current development and maintainance by:
* (c) 2000 Robert Baruch (autophile@dol.net)
*
* See scm.c for more explanation
*
* 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 _USB_SCM_H
#define _USB_SCM_H
#define SCM_EPP_PORT 0x10
#define SCM_EPP_REGISTER 0x30
#define SCM_ATA 0x40
#define SCM_ISA 0x50
/* SCM User I/O Data registers */
#define SCM_UIO_EPAD 0x80 // Enable Peripheral Control Signals
#define SCM_UIO_CDT 0x40 // Card Detect (Read Only)
// CDT = ACKD & !UI1 & !UI0
#define SCM_UIO_1 0x20 // I/O 1
#define SCM_UIO_0 0x10 // I/O 0
#define SCM_UIO_EPP_ATA 0x08 // 1=EPP mode, 0=ATA mode
#define SCM_UIO_UI1 0x04 // Input 1
#define SCM_UIO_UI0 0x02 // Input 0
#define SCM_UIO_INTR_ACK 0x01 // Interrupt (ATA & ISA)/Acknowledge (EPP)
/* SCM User I/O Enable registers */
#define SCM_UIO_DRVRST 0x80 // Reset Peripheral
#define SCM_UIO_ACKD 0x40 // Enable Card Detect
#define SCM_UIO_OE1 0x20 // I/O 1 set=output/clr=input
// If ACKD=1, set OE1 to 1 also.
#define SCM_UIO_OE0 0x10 // I/O 0 set=output/clr=input
#define SCM_UIO_ADPRST 0x01 // Reset SCM chip
/* SCM-specific commands */
extern int scm_read(struct us_data *us, unsigned char access,
unsigned char reg, unsigned char *content);
extern int scm_write(struct us_data *us, unsigned char access,
unsigned char reg, unsigned char content);
extern int scm_read_block(struct us_data *us, unsigned char access,
unsigned char reg, unsigned char *content, unsigned short len,
int use_sg);
extern int scm_write_block(struct us_data *us, unsigned char access,
unsigned char reg, unsigned char *content, unsigned short len,
int use_sg);
extern int scm_multiple_write(struct us_data *us, unsigned char access,
unsigned char *registers, unsigned char *data_out,
unsigned short num_registers);
extern int scm_read_user_io(struct us_data *us, unsigned char *data_flags);
extern int scm_write_user_io(struct us_data *us,
unsigned char enable_flags, unsigned char data_flags);
/* HP 8200e stuff */
extern int hp8200e_transport(Scsi_Cmnd *srb, struct us_data *us);
#endif
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