79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
/*
|
|
* linux/drivers/ide/legacy/falconide.c -- Atari Falcon IDE Driver
|
|
*
|
|
* Created 12 Jul 1997 by Geert Uytterhoeven
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive for
|
|
* more details.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/hdreg.h>
|
|
#include <linux/ide.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/setup.h>
|
|
#include <asm/atarihw.h>
|
|
#include <asm/atariints.h>
|
|
#include <asm/atari_stdma.h>
|
|
|
|
|
|
/*
|
|
* Base of the IDE interface
|
|
*/
|
|
|
|
#define ATA_HD_BASE 0xfff00000
|
|
|
|
/*
|
|
* Offsets from the above base
|
|
*/
|
|
|
|
#define ATA_HD_DATA 0x00
|
|
#define ATA_HD_ERROR 0x05 /* see err-bits */
|
|
#define ATA_HD_NSECTOR 0x09 /* nr of sectors to read/write */
|
|
#define ATA_HD_SECTOR 0x0d /* starting sector */
|
|
#define ATA_HD_LCYL 0x11 /* starting cylinder */
|
|
#define ATA_HD_HCYL 0x15 /* high byte of starting cyl */
|
|
#define ATA_HD_SELECT 0x19 /* 101dhhhh , d=drive, hhhh=head */
|
|
#define ATA_HD_STATUS 0x1d /* see status-bits */
|
|
#define ATA_HD_CONTROL 0x39
|
|
|
|
static int falconide_offsets[IDE_NR_PORTS] __initdata = {
|
|
ATA_HD_DATA, ATA_HD_ERROR, ATA_HD_NSECTOR, ATA_HD_SECTOR, ATA_HD_LCYL,
|
|
ATA_HD_HCYL, ATA_HD_SELECT, ATA_HD_STATUS, ATA_HD_CONTROL, -1
|
|
};
|
|
|
|
|
|
/*
|
|
* falconide_intr_lock is used to obtain access to the IDE interrupt,
|
|
* which is shared between several drivers.
|
|
*/
|
|
|
|
int falconide_intr_lock;
|
|
|
|
|
|
/*
|
|
* Probe for a Falcon IDE interface
|
|
*/
|
|
|
|
void __init falconide_init(void)
|
|
{
|
|
if (MACH_IS_ATARI && ATARIHW_PRESENT(IDE)) {
|
|
hw_regs_t hw;
|
|
int index;
|
|
|
|
ide_setup_ports(&hw, ATA_HD_BASE, falconide_offsets,
|
|
0, 0, NULL,
|
|
// falconide_iops,
|
|
IRQ_MFP_IDE);
|
|
index = ide_register_hw(&hw, NULL);
|
|
|
|
if (index != -1)
|
|
printk("ide%d: Falcon IDE interface\n", index);
|
|
}
|
|
}
|