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1da177e4 LT |
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 | ||
24558a0f | 63 | static inline void __iomem *ioremap(unsigned long offset, unsigned long size) |
1da177e4 LT |
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 | ||
1da177e4 LT |
169 | static inline void |
170 | memset_io(volatile void __iomem *addr, unsigned char val, int count) | |
171 | { | |
172 | memset((void __force *) addr, val, count); | |
173 | } | |
174 | ||
175 | static inline void | |
176 | memcpy_fromio(void *dst, volatile void __iomem *src, int count) | |
177 | { | |
178 | memcpy(dst, (void __force *) src, count); | |
179 | } | |
180 | ||
181 | static inline void | |
182 | memcpy_toio(volatile void __iomem *dst, const void *src, int count) | |
183 | { | |
184 | memcpy((void __force *) dst, src, count); | |
185 | } | |
186 | ||
187 | /* | |
188 | * Convert a physical pointer to a virtual kernel pointer for /dev/mem | |
189 | * access | |
190 | */ | |
191 | #define xlate_dev_mem_ptr(p) __va(p) | |
192 | ||
193 | /* | |
194 | * Convert a virtual cached pointer to an uncached pointer | |
195 | */ | |
196 | #define xlate_dev_kmem_ptr(p) p | |
197 | ||
198 | #endif /* __KERNEL__ */ | |
199 | ||
200 | #endif /* _ASM_M32R_IO_H */ |