1/*
2 *  linux/include/asm-cris/ide.h
3 *
4 *  Copyright (C) 2000-2004  Axis Communications AB
5 *
6 *  Authors:    Bjorn Wesen, Mikael Starvik
7 *
8 */
9
10/*
11 *  This file contains the ETRAX FS specific IDE code.
12 */
13
14#ifndef __ASMCRIS_IDE_H
15#define __ASMCRIS_IDE_H
16
17#ifdef __KERNEL__
18
19#include <asm/arch/hwregs/intr_vect.h>
20#include <asm/arch/hwregs/ata_defs.h>
21#include <asm/io.h>
22#include <asm-generic/ide_iops.h>
23
24
25/* ETRAX FS can support 4 IDE busses on the same pins (serialized) */
26
27#define MAX_HWIFS	4
28
29static inline int ide_default_irq(unsigned long base)
30{
31	/* all IDE busses share the same IRQ,
32	 * this has the side-effect that ide-probe.c will cluster our 4 interfaces
33	 * together in a hwgroup, and will serialize accesses. this is good, because
34	 * we can't access more than one interface at the same time on ETRAX100.
35	 */
36	return ATA_INTR_VECT;
37}
38
39static inline unsigned long ide_default_io_base(int index)
40{
41	reg_ata_rw_ctrl2 ctrl2 = {.sel = index};
42	/* we have no real I/O base address per interface, since all go through the
43	 * same register. but in a bitfield in that register, we have the i/f number.
44	 * so we can use the io_base to remember that bitfield.
45	 */
46        ctrl2.sel = index;
47
48	return REG_TYPE_CONV(unsigned long, reg_ata_rw_ctrl2, ctrl2);
49}
50
51/* some configuration options we don't need */
52
53#undef SUPPORT_VLB_SYNC
54#define SUPPORT_VLB_SYNC 0
55
56#define IDE_ARCH_ACK_INTR
57#define ide_ack_intr(hwif)	(hwif)->hw.ack_intr(hwif)
58
59#endif /* __KERNEL__ */
60
61#endif /* __ASMCRIS_IDE_H */
62