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
23 #define IDE_ARCH_OBSOLETE_DEFAULTS
24
25 static __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
39 static __inline__ unsigned long ide_default_io_base(int index)
40 {
41 /*
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 */
47 if (no_pci_devices()) {
48 switch(index) {
49 case 2: return 0x1e8;
50 case 3: return 0x168;
51 case 4: return 0x1e0;
52 case 5: return 0x160;
53 }
54 }
55 switch (index) {
56 case 0: return 0x1f0;
57 case 1: return 0x170;
58 default:
59 return 0;
60 }
61 }
62
63 #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 */
76
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