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/*
* linux/include/asm-i386/ide.h
*
* Copyright (C) 1994-1996 Linus Torvalds & authors
*/
/*
* This file contains the i386 architecture specific IDE code.
*/
#ifndef __ASMi386_IDE_H
#define __ASMi386_IDE_H
#ifdef __KERNEL__
#include <linux/config.h>
#ifndef MAX_HWIFS
# ifdef CONFIG_BLK_DEV_IDEPCI
#define MAX_HWIFS 10
# else
#define MAX_HWIFS 6
# endif
#endif
static __inline__ int ide_default_irq(unsigned long base)
{
switch (base) {
#ifdef CONFIG_X86_PC9800
case 0x640: return 9;
#endif
case 0x1f0: return 14;
case 0x170: return 15;
case 0x1e8: return 11;
case 0x168: return 10;
case 0x1e0: return 8;
case 0x160: return 12;
default:
return 0;
}
}
static __inline__ unsigned long ide_default_io_base(int index)
{
switch (index) {
#ifdef CONFIG_X86_PC9800
case 0:
case 1: return 0x640;
#else
case 0: return 0x1f0;
case 1: return 0x170;
case 2: return 0x1e8;
case 3: return 0x168;
case 4: return 0x1e0;
case 5: return 0x160;
#endif
default:
return 0;
}
}
static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
unsigned long ctrl_port, int *irq)
{
unsigned long reg = data_port;
int i;
#ifdef CONFIG_X86_PC9800
unsigned long increment = data_port == 0x640 ? 2 : 1;
#endif
for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
hw->io_ports[i] = reg;
#ifdef CONFIG_X86_PC9800
reg += increment;
#else
reg += 1;
#endif
}
if (ctrl_port) {
hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
#ifdef CONFIG_X86_PC9800
} else if (data_port == 0x640) {
hw->io_ports[IDE_CONTROL_OFFSET] = 0x74c;
#endif
} else {
hw->io_ports[IDE_CONTROL_OFFSET] = hw->io_ports[IDE_DATA_OFFSET] + 0x206;
}
if (irq != NULL)
*irq = 0;
hw->io_ports[IDE_IRQ_OFFSET] = 0;
}
static __inline__ void ide_init_default_hwifs(void)
{
#ifndef CONFIG_BLK_DEV_IDEPCI
hw_regs_t hw;
int index;
for(index = 0; index < MAX_HWIFS; index++) {
memset(&hw, 0, sizeof hw);
ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL);
hw.irq = ide_default_irq(ide_default_io_base(index));
ide_register_hw(&hw, NULL);
}
#endif /* CONFIG_BLK_DEV_IDEPCI */
}
#include <asm-generic/ide_iops.h>
#endif /* __KERNEL__ */
#endif /* __ASMi386_IDE_H */