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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Copyright (C) 1994-1996 Linus Torvalds & authors
3 */
4
5/*
6 * This file contains the i386 architecture specific IDE code.
7 */
8
9#ifndef __ASMi386_IDE_H
10#define __ASMi386_IDE_H
11
12#ifdef __KERNEL__
13
Linus Torvalds1da177e2005-04-16 15:20:36 -070014
15#ifndef MAX_HWIFS
16# ifdef CONFIG_BLK_DEV_IDEPCI
17#define MAX_HWIFS 10
18# else
19#define MAX_HWIFS 6
20# endif
21#endif
22
23#define IDE_ARCH_OBSOLETE_DEFAULTS
24
25static __inline__ int ide_default_irq(unsigned long base)
26{
27 switch (base) {
28 case 0x1f0: return 14;
29 case 0x170: return 15;
30 case 0x1e8: return 11;
31 case 0x168: return 10;
32 case 0x1e0: return 8;
33 case 0x160: return 12;
34 default:
35 return 0;
36 }
37}
38
39static __inline__ unsigned long ide_default_io_base(int index)
40{
Alan Cox25000c2c2005-11-10 00:10:37 +010041 /*
42 * If PCI is present then it is not safe to poke around
43 * the other legacy IDE ports. Only 0x1f0 and 0x170 are
44 * defined compatibility mode ports for PCI. A user can
45 * override this using ide= but we must default safe.
46 */
Zhang, Yanmined4aaad2007-07-15 23:39:39 -070047 if (no_pci_devices()) {
Alan Coxc47abbb2005-06-27 15:24:31 -070048 switch(index) {
49 case 2: return 0x1e8;
50 case 3: return 0x168;
51 case 4: return 0x1e0;
52 case 5: return 0x160;
53 }
54 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070055 switch (index) {
56 case 0: return 0x1f0;
57 case 1: return 0x170;
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 default:
59 return 0;
60 }
61}
62
Linus Torvalds1da177e2005-04-16 15:20:36 -070063#define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */
64
65#ifdef CONFIG_BLK_DEV_IDEPCI
66#define ide_init_default_irq(base) (0)
67#else
68#define ide_init_default_irq(base) ide_default_irq(base)
69#endif
70
71#include <asm-generic/ide_iops.h>
72
73#endif /* __KERNEL__ */
74
75#endif /* __ASMi386_IDE_H */