/*
 *  linux/include/asm-arm/arch-arc/ide.h
 *
 *  Copyright (C) 1997,1998 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  IDE definitions for the Acorn Archimedes/A5000
 *  architecture
 *
 *  Modifications:
 *   04-04-1998	PJB	Merged `arc' and `a5k' versions
 *   01-07-1998	RMK	Added new ide_ioregspec_t
 *   29-07-1998	RMK	Major re-work of IDE architecture specific code
 */
#include <asm/irq.h>
#include <asm/mach-types.h>

/*
 * Set up a hw structure for a specified data port, control port and IRQ.
 * This should follow whatever the default interface uses.
 */
static __inline__ void
ide_init_hwif_ports(hw_regs_t *hw, int data_port, int ctrl_port, int *irq)
{
	ide_ioreg_t reg = (ide_ioreg_t) data_port;
	int i;

	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
		hw->io_ports[i] = reg;
		reg += 1;
	}
	hw->io_ports[IDE_CONTROL_OFFSET] = (ide_ioreg_t) ctrl_port;
	if (irq)
		*irq = 0;
}

/*
 * This registers the standard ports for this architecture with the IDE
 * driver.
 */
static __inline__ void ide_init_default_hwifs(void)
{
	if (machine_is_a5k()) {
		hw_regs_t hw;

	        memset(&hw, 0, sizeof(hw));

		ide_init_hwif_ports(&hw, 0x1f0, 0x3f6, NULL);
		hw.irq = IRQ_HARDDISK;
		ide_register_hw(&hw, NULL);
	}
}