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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/include/asm-i386/ide.h
3 *
4 * Copyright (C) 1994-1996 Linus Torvalds & authors
5 */
6
7/*
8 * This file contains the i386 architecture specific IDE code.
9 */
10
11#ifndef __ASMi386_IDE_H
12#define __ASMi386_IDE_H
13
14#ifdef __KERNEL__
15
Linus Torvalds1da177e2005-04-16 15:20:36 -070016
17#ifndef MAX_HWIFS
18# ifdef CONFIG_BLK_DEV_IDEPCI
19#define MAX_HWIFS 10
20# else
21#define MAX_HWIFS 6
22# endif
23#endif
24
25#define IDE_ARCH_OBSOLETE_DEFAULTS
26
27static __inline__ int ide_default_irq(unsigned long base)
28{
29 switch (base) {
30 case 0x1f0: return 14;
31 case 0x170: return 15;
32 case 0x1e8: return 11;
33 case 0x168: return 10;
34 case 0x1e0: return 8;
35 case 0x160: return 12;
36 default:
37 return 0;
38 }
39}
40
41static __inline__ unsigned long ide_default_io_base(int index)
42{
Alan Cox25000c2c2005-11-10 00:10:37 +010043 /*
44 * If PCI is present then it is not safe to poke around
45 * the other legacy IDE ports. Only 0x1f0 and 0x170 are
46 * defined compatibility mode ports for PCI. A user can
47 * override this using ide= but we must default safe.
48 */
Zhang, Yanmined4aaad2007-07-15 23:39:39 -070049 if (no_pci_devices()) {
Alan Coxc47abbb2005-06-27 15:24:31 -070050 switch(index) {
51 case 2: return 0x1e8;
52 case 3: return 0x168;
53 case 4: return 0x1e0;
54 case 5: return 0x160;
55 }
56 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 switch (index) {
58 case 0: return 0x1f0;
59 case 1: return 0x170;
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 default:
61 return 0;
62 }
63}
64
65#define IDE_ARCH_OBSOLETE_INIT
66#define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */
67
68#ifdef CONFIG_BLK_DEV_IDEPCI
69#define ide_init_default_irq(base) (0)
70#else
71#define ide_init_default_irq(base) ide_default_irq(base)
72#endif
73
74#include <asm-generic/ide_iops.h>
75
76#endif /* __KERNEL__ */
77
78#endif /* __ASMi386_IDE_H */