tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * 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
14
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
23static __inline__ int ide_default_irq(unsigned long base)
24{
25 switch (base) {
26 case 0x1f0: return 14;
27 case 0x170: return 15;
28 case 0x1e8: return 11;
29 case 0x168: return 10;
30 case 0x1e0: return 8;
31 case 0x160: return 12;
32 default:
33 return 0;
34 }
35}
36
37static __inline__ unsigned long ide_default_io_base(int index)
38{
39 /*
40 * If PCI is present then it is not safe to poke around
41 * the other legacy IDE ports. Only 0x1f0 and 0x170 are
42 * defined compatibility mode ports for PCI. A user can
43 * override this using ide= but we must default safe.
44 */
45 if (no_pci_devices()) {
46 switch(index) {
47 case 2: return 0x1e8;
48 case 3: return 0x168;
49 case 4: return 0x1e0;
50 case 5: return 0x160;
51 }
52 }
53 switch (index) {
54 case 0: return 0x1f0;
55 case 1: return 0x170;
56 default:
57 return 0;
58 }
59}
60
61#include <asm-generic/ide_iops.h>
62
63#endif /* __KERNEL__ */
64
65#endif /* __ASMi386_IDE_H */