1/*
2 *  linux/include/asm-arm/arch-arc/ide.h
3 *
4 *  Copyright (C) 1997,1998 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 *  IDE definitions for the Acorn Archimedes/A5000
11 *  architecture
12 *
13 *  Modifications:
14 *   04-04-1998	PJB	Merged `arc' and `a5k' versions
15 *   01-07-1998	RMK	Added new ide_ioregspec_t
16 *   29-07-1998	RMK	Major re-work of IDE architecture specific code
17 */
18#include <asm/irq.h>
19#include <asm/mach-types.h>
20
21/*
22 * Set up a hw structure for a specified data port, control port and IRQ.
23 * This should follow whatever the default interface uses.
24 */
25static __inline__ void
26ide_init_hwif_ports(hw_regs_t *hw, int data_port, int ctrl_port, int *irq)
27{
28	ide_ioreg_t reg = (ide_ioreg_t) data_port;
29	int i;
30
31	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
32		hw->io_ports[i] = reg;
33		reg += 1;
34	}
35	hw->io_ports[IDE_CONTROL_OFFSET] = (ide_ioreg_t) ctrl_port;
36	if (irq)
37		*irq = 0;
38}
39
40/*
41 * This registers the standard ports for this architecture with the IDE
42 * driver.
43 */
44static __inline__ void ide_init_default_hwifs(void)
45{
46	if (machine_is_a5k()) {
47		hw_regs_t hw;
48
49	        memset(&hw, 0, sizeof(hw));
50
51		ide_init_hwif_ports(&hw, 0x1f0, 0x3f6, NULL);
52		hw.irq = IRQ_HARDDISK;
53		ide_register_hw(&hw, NULL);
54	}
55}
56