diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-m32r/io.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-m32r/io.h')
-rw-r--r-- | include/asm-m32r/io.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/include/asm-m32r/io.h b/include/asm-m32r/io.h new file mode 100644 index 000000000000..8e9e481e6996 --- /dev/null +++ b/include/asm-m32r/io.h | |||
@@ -0,0 +1,232 @@ | |||
1 | #ifndef _ASM_M32R_IO_H | ||
2 | #define _ASM_M32R_IO_H | ||
3 | |||
4 | #include <linux/string.h> | ||
5 | #include <linux/compiler.h> | ||
6 | #include <asm/page.h> /* __va */ | ||
7 | |||
8 | #ifdef __KERNEL__ | ||
9 | |||
10 | #define IO_SPACE_LIMIT 0xFFFFFFFF | ||
11 | |||
12 | /** | ||
13 | * virt_to_phys - map virtual addresses to physical | ||
14 | * @address: address to remap | ||
15 | * | ||
16 | * The returned physical address is the physical (CPU) mapping for | ||
17 | * the memory address given. It is only valid to use this function on | ||
18 | * addresses directly mapped or allocated via kmalloc. | ||
19 | * | ||
20 | * This function does not give bus mappings for DMA transfers. In | ||
21 | * almost all conceivable cases a device driver should not be using | ||
22 | * this function | ||
23 | */ | ||
24 | |||
25 | static inline unsigned long virt_to_phys(volatile void * address) | ||
26 | { | ||
27 | return __pa(address); | ||
28 | } | ||
29 | |||
30 | /** | ||
31 | * phys_to_virt - map physical address to virtual | ||
32 | * @address: address to remap | ||
33 | * | ||
34 | * The returned virtual address is a current CPU mapping for | ||
35 | * the memory address given. It is only valid to use this function on | ||
36 | * addresses that have a kernel mapping | ||
37 | * | ||
38 | * This function does not handle bus mappings for DMA transfers. In | ||
39 | * almost all conceivable cases a device driver should not be using | ||
40 | * this function | ||
41 | */ | ||
42 | |||
43 | static inline void *phys_to_virt(unsigned long address) | ||
44 | { | ||
45 | return __va(address); | ||
46 | } | ||
47 | |||
48 | extern void __iomem * | ||
49 | __ioremap(unsigned long offset, unsigned long size, unsigned long flags); | ||
50 | |||
51 | /** | ||
52 | * ioremap - map bus memory into CPU space | ||
53 | * @offset: bus address of the memory | ||
54 | * @size: size of the resource to map | ||
55 | * | ||
56 | * ioremap performs a platform specific sequence of operations to | ||
57 | * make bus memory CPU accessible via the readb/readw/readl/writeb/ | ||
58 | * writew/writel functions and the other mmio helpers. The returned | ||
59 | * address is not guaranteed to be usable directly as a virtual | ||
60 | * address. | ||
61 | */ | ||
62 | |||
63 | static inline void * ioremap(unsigned long offset, unsigned long size) | ||
64 | { | ||
65 | return __ioremap(offset, size, 0); | ||
66 | } | ||
67 | |||
68 | extern void iounmap(volatile void __iomem *addr); | ||
69 | #define ioremap_nocache(off,size) ioremap(off,size) | ||
70 | |||
71 | /* | ||
72 | * IO bus memory addresses are also 1:1 with the physical address | ||
73 | */ | ||
74 | #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) | ||
75 | #define page_to_bus page_to_phys | ||
76 | #define virt_to_bus virt_to_phys | ||
77 | |||
78 | extern unsigned char _inb(unsigned long); | ||
79 | extern unsigned short _inw(unsigned long); | ||
80 | extern unsigned long _inl(unsigned long); | ||
81 | extern unsigned char _inb_p(unsigned long); | ||
82 | extern unsigned short _inw_p(unsigned long); | ||
83 | extern unsigned long _inl_p(unsigned long); | ||
84 | extern void _outb(unsigned char, unsigned long); | ||
85 | extern void _outw(unsigned short, unsigned long); | ||
86 | extern void _outl(unsigned long, unsigned long); | ||
87 | extern void _outb_p(unsigned char, unsigned long); | ||
88 | extern void _outw_p(unsigned short, unsigned long); | ||
89 | extern void _outl_p(unsigned long, unsigned long); | ||
90 | extern void _insb(unsigned int, void *, unsigned long); | ||
91 | extern void _insw(unsigned int, void *, unsigned long); | ||
92 | extern void _insl(unsigned int, void *, unsigned long); | ||
93 | extern void _outsb(unsigned int, const void *, unsigned long); | ||
94 | extern void _outsw(unsigned int, const void *, unsigned long); | ||
95 | extern void _outsl(unsigned int, const void *, unsigned long); | ||
96 | |||
97 | static inline unsigned char _readb(unsigned long addr) | ||
98 | { | ||
99 | return *(volatile unsigned char __force *)addr; | ||
100 | } | ||
101 | |||
102 | static inline unsigned short _readw(unsigned long addr) | ||
103 | { | ||
104 | return *(volatile unsigned short __force *)addr; | ||
105 | } | ||
106 | |||
107 | static inline unsigned long _readl(unsigned long addr) | ||
108 | { | ||
109 | return *(volatile unsigned long __force *)addr; | ||
110 | } | ||
111 | |||
112 | static inline void _writeb(unsigned char b, unsigned long addr) | ||
113 | { | ||
114 | *(volatile unsigned char __force *)addr = b; | ||
115 | } | ||
116 | |||
117 | static inline void _writew(unsigned short w, unsigned long addr) | ||
118 | { | ||
119 | *(volatile unsigned short __force *)addr = w; | ||
120 | } | ||
121 | |||
122 | static inline void _writel(unsigned long l, unsigned long addr) | ||
123 | { | ||
124 | *(volatile unsigned long __force *)addr = l; | ||
125 | } | ||
126 | |||
127 | #define inb _inb | ||
128 | #define inw _inw | ||
129 | #define inl _inl | ||
130 | #define outb _outb | ||
131 | #define outw _outw | ||
132 | #define outl _outl | ||
133 | |||
134 | #define inb_p _inb_p | ||
135 | #define inw_p _inw_p | ||
136 | #define inl_p _inl_p | ||
137 | #define outb_p _outb_p | ||
138 | #define outw_p _outw_p | ||
139 | #define outl_p _outl_p | ||
140 | |||
141 | #define insb _insb | ||
142 | #define insw _insw | ||
143 | #define insl _insl | ||
144 | #define outsb _outsb | ||
145 | #define outsw _outsw | ||
146 | #define outsl _outsl | ||
147 | |||
148 | #define readb(addr) _readb((unsigned long)(addr)) | ||
149 | #define readw(addr) _readw((unsigned long)(addr)) | ||
150 | #define readl(addr) _readl((unsigned long)(addr)) | ||
151 | #define __raw_readb readb | ||
152 | #define __raw_readw readw | ||
153 | #define __raw_readl readl | ||
154 | #define readb_relaxed readb | ||
155 | #define readw_relaxed readw | ||
156 | #define readl_relaxed readl | ||
157 | |||
158 | #define writeb(val, addr) _writeb((val), (unsigned long)(addr)) | ||
159 | #define writew(val, addr) _writew((val), (unsigned long)(addr)) | ||
160 | #define writel(val, addr) _writel((val), (unsigned long)(addr)) | ||
161 | #define __raw_writeb writeb | ||
162 | #define __raw_writew writew | ||
163 | #define __raw_writel writel | ||
164 | |||
165 | #define mmiowb() | ||
166 | |||
167 | #define flush_write_buffers() do { } while (0) /* M32R_FIXME */ | ||
168 | |||
169 | /** | ||
170 | * check_signature - find BIOS signatures | ||
171 | * @io_addr: mmio address to check | ||
172 | * @signature: signature block | ||
173 | * @length: length of signature | ||
174 | * | ||
175 | * Perform a signature comparison with the ISA mmio address io_addr. | ||
176 | * Returns 1 on a match. | ||
177 | * | ||
178 | * This function is deprecated. New drivers should use ioremap and | ||
179 | * check_signature. | ||
180 | */ | ||
181 | |||
182 | static inline int check_signature(void __iomem *io_addr, | ||
183 | const unsigned char *signature, int length) | ||
184 | { | ||
185 | int retval = 0; | ||
186 | #if 0 | ||
187 | printk("check_signature\n"); | ||
188 | do { | ||
189 | if (readb(io_addr) != *signature) | ||
190 | goto out; | ||
191 | io_addr++; | ||
192 | signature++; | ||
193 | length--; | ||
194 | } while (length); | ||
195 | retval = 1; | ||
196 | out: | ||
197 | #endif | ||
198 | return retval; | ||
199 | } | ||
200 | |||
201 | static inline void | ||
202 | memset_io(volatile void __iomem *addr, unsigned char val, int count) | ||
203 | { | ||
204 | memset((void __force *) addr, val, count); | ||
205 | } | ||
206 | |||
207 | static inline void | ||
208 | memcpy_fromio(void *dst, volatile void __iomem *src, int count) | ||
209 | { | ||
210 | memcpy(dst, (void __force *) src, count); | ||
211 | } | ||
212 | |||
213 | static inline void | ||
214 | memcpy_toio(volatile void __iomem *dst, const void *src, int count) | ||
215 | { | ||
216 | memcpy((void __force *) dst, src, count); | ||
217 | } | ||
218 | |||
219 | /* | ||
220 | * Convert a physical pointer to a virtual kernel pointer for /dev/mem | ||
221 | * access | ||
222 | */ | ||
223 | #define xlate_dev_mem_ptr(p) __va(p) | ||
224 | |||
225 | /* | ||
226 | * Convert a virtual cached pointer to an uncached pointer | ||
227 | */ | ||
228 | #define xlate_dev_kmem_ptr(p) p | ||
229 | |||
230 | #endif /* __KERNEL__ */ | ||
231 | |||
232 | #endif /* _ASM_M32R_IO_H */ | ||