blob: 454440193eacd8913277df03e9593ed3d3169dbb [file] [log] [blame]
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
16#include <linux/config.h>
17
18#ifndef MAX_HWIFS
19# ifdef CONFIG_BLK_DEV_IDEPCI
20#define MAX_HWIFS 10
21# else
22#define MAX_HWIFS 6
23# endif
24#endif
25
26#define IDE_ARCH_OBSOLETE_DEFAULTS
27
28static __inline__ int ide_default_irq(unsigned long base)
29{
30 switch (base) {
31 case 0x1f0: return 14;
32 case 0x170: return 15;
33 case 0x1e8: return 11;
34 case 0x168: return 10;
35 case 0x1e0: return 8;
36 case 0x160: return 12;
37 default:
38 return 0;
39 }
40}
41
42static __inline__ unsigned long ide_default_io_base(int index)
43{
Alan Cox25000c22005-11-10 00:10:37 +010044 /*
45 * If PCI is present then it is not safe to poke around
46 * the other legacy IDE ports. Only 0x1f0 and 0x170 are
47 * defined compatibility mode ports for PCI. A user can
48 * override this using ide= but we must default safe.
49 */
Alan Coxc47abbb2005-06-27 15:24:31 -070050 if (pci_find_device(PCI_ANY_ID, PCI_ANY_ID, NULL) == NULL) {
51 switch(index) {
52 case 2: return 0x1e8;
53 case 3: return 0x168;
54 case 4: return 0x1e0;
55 case 5: return 0x160;
56 }
57 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 switch (index) {
59 case 0: return 0x1f0;
60 case 1: return 0x170;
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 default:
62 return 0;
63 }
64}
65
66#define IDE_ARCH_OBSOLETE_INIT
67#define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */
68
69#ifdef CONFIG_BLK_DEV_IDEPCI
70#define ide_init_default_irq(base) (0)
71#else
72#define ide_init_default_irq(base) ide_default_irq(base)
73#endif
74
75#include <asm-generic/ide_iops.h>
76
77#endif /* __KERNEL__ */
78
79#endif /* __ASMi386_IDE_H */