tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1994-1996 Linus Torvalds & authors
7 *
8 * Copied from i386; many of the especially older MIPS or ISA-based platforms
9 * are basically identical. Using this file probably implies i8259 PIC
10 * support in a system but the very least interrupt numbers 0 - 15 need to
11 * be put aside for legacy devices.
12 */
13#ifndef __ASM_MACH_GENERIC_IDE_H
14#define __ASM_MACH_GENERIC_IDE_H
15
16#ifdef __KERNEL__
17
18#include <linux/config.h>
19#include <linux/pci.h>
20#include <linux/stddef.h>
21#include <asm/processor.h>
22
23#ifndef MAX_HWIFS
24# ifdef CONFIG_BLK_DEV_IDEPCI
25#define MAX_HWIFS 10
26# else
27#define MAX_HWIFS 6
28# endif
29#endif
30
31#define IDE_ARCH_OBSOLETE_DEFAULTS
32
33static __inline__ int ide_probe_legacy(void)
34{
35#ifdef CONFIG_PCI
36 struct pci_dev *dev;
37 if ((dev = pci_get_class(PCI_CLASS_BRIDGE_EISA << 8, NULL)) != NULL ||
38 (dev = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL)) != NULL) {
39 pci_dev_put(dev);
40
41 return 1;
42 }
43 return 0;
44#elif defined(CONFIG_EISA) || defined(CONFIG_ISA)
45 return 1;
46#else
47 return 0;
48#endif
49}
50
51static __inline__ int ide_default_irq(unsigned long base)
52{
53 if (ide_probe_legacy())
54 switch (base) {
55 case 0x1f0:
56 return 14;
57 case 0x170:
58 return 15;
59 case 0x1e8:
60 return 11;
61 case 0x168:
62 return 10;
63 case 0x1e0:
64 return 8;
65 case 0x160:
66 return 12;
67 default:
68 return 0;
69 }
70 else
71 return 0;
72}
73
74static __inline__ unsigned long ide_default_io_base(int index)
75{
76 if (ide_probe_legacy())
77 switch (index) {
78 case 0:
79 return 0x1f0;
80 case 1:
81 return 0x170;
82 case 2:
83 return 0x1e8;
84 case 3:
85 return 0x168;
86 case 4:
87 return 0x1e0;
88 case 5:
89 return 0x160;
90 default:
91 return 0;
92 }
93 else
94 return 0;
95}
96
97#define IDE_ARCH_OBSOLETE_INIT
98#define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */
99
100#ifdef CONFIG_BLK_DEV_IDEPCI
101#define ide_init_default_irq(base) (0)
102#else
103#define ide_init_default_irq(base) ide_default_irq(base)
104#endif
105
106/* MIPS port and memory-mapped I/O string operations. */
107
108static inline void __ide_flush_dcache_range(unsigned long addr, unsigned long size)
109{
110 if (cpu_has_dc_aliases) {
111 unsigned long end = addr + size;
112 for (; addr < end; addr += PAGE_SIZE)
113 flush_dcache_page(virt_to_page(addr));
114 }
115}
116
117static inline void __ide_insw(unsigned long port, void *addr,
118 unsigned int count)
119{
120 insw(port, addr, count);
121 __ide_flush_dcache_range((unsigned long)addr, count * 2);
122}
123
124static inline void __ide_insl(unsigned long port, void *addr, unsigned int count)
125{
126 insl(port, addr, count);
127 __ide_flush_dcache_range((unsigned long)addr, count * 4);
128}
129
130static inline void __ide_outsw(unsigned long port, const void *addr,
131 unsigned long count)
132{
133 outsw(port, addr, count);
134 __ide_flush_dcache_range((unsigned long)addr, count * 2);
135}
136
137static inline void __ide_outsl(unsigned long port, const void *addr,
138 unsigned long count)
139{
140 outsl(port, addr, count);
141 __ide_flush_dcache_range((unsigned long)addr, count * 4);
142}
143
144static inline void __ide_mm_insw(void __iomem *port, void *addr, u32 count)
145{
146 readsw(port, addr, count);
147 __ide_flush_dcache_range((unsigned long)addr, count * 2);
148}
149
150static inline void __ide_mm_insl(void __iomem *port, void *addr, u32 count)
151{
152 readsl(port, addr, count);
153 __ide_flush_dcache_range((unsigned long)addr, count * 4);
154}
155
156static inline void __ide_mm_outsw(void __iomem *port, void *addr, u32 count)
157{
158 writesw(port, addr, count);
159 __ide_flush_dcache_range((unsigned long)addr, count * 2);
160}
161
162static inline void __ide_mm_outsl(void __iomem * port, void *addr, u32 count)
163{
164 writesl(port, addr, count);
165 __ide_flush_dcache_range((unsigned long)addr, count * 4);
166}
167
168/* ide_insw calls insw, not __ide_insw. Why? */
169#undef insw
170#undef insl
171#undef outsw
172#undef outsl
173#define insw(port, addr, count) __ide_insw(port, addr, count)
174#define insl(port, addr, count) __ide_insl(port, addr, count)
175#define outsw(port, addr, count) __ide_outsw(port, addr, count)
176#define outsl(port, addr, count) __ide_outsl(port, addr, count)
177
178#endif /* __KERNEL__ */
179
180#endif /* __ASM_MACH_GENERIC_IDE_H */