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8#ifndef _ASM_IO_H
9#define _ASM_IO_H
10
11#ifdef __KERNEL__
12
13#include <linux/types.h>
14#include <asm/iomap.h>
15#include <asm/page.h>
16#include <asm/cacheflush.h>
17
18
19
20
21
22#define IO_SPACE_LIMIT 0xffff
23#define _IO_BASE ((void __iomem *)0xfe000000)
24
25#define IOMEM(x) ((void __force __iomem *)(x))
26
27extern int remap_area_pages(unsigned long start, unsigned long phys_addr,
28 unsigned long end, unsigned long flags);
29
30extern void iounmap(const volatile void __iomem *addr);
31
32
33extern void __raw_readsw(const void __iomem *addr, void *data, int wordlen);
34extern void __raw_writesw(void __iomem *addr, const void *data, int wordlen);
35
36extern void __raw_readsl(const void __iomem *addr, void *data, int wordlen);
37extern void __raw_writesl(void __iomem *addr, const void *data, int wordlen);
38
39#define readsw(p, d, l) __raw_readsw(p, d, l)
40#define writesw(p, d, l) __raw_writesw(p, d, l)
41
42#define readsl(p, d, l) __raw_readsl(p, d, l)
43#define writesl(p, d, l) __raw_writesl(p, d, l)
44
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46
47
48
49static inline unsigned long virt_to_phys(volatile void *address)
50{
51 return __pa(address);
52}
53
54
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56
57
58static inline void *phys_to_virt(unsigned long address)
59{
60 return __va(address);
61}
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63
64
65
66
67#define xlate_dev_kmem_ptr(p) __va(p)
68#define xlate_dev_mem_ptr(p) __va(p)
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83
84static inline u8 readb(const volatile void __iomem *addr)
85{
86 u8 val;
87 asm volatile(
88 "%0 = memb(%1);"
89 : "=&r" (val)
90 : "r" (addr)
91 );
92 return val;
93}
94
95static inline u16 readw(const volatile void __iomem *addr)
96{
97 u16 val;
98 asm volatile(
99 "%0 = memh(%1);"
100 : "=&r" (val)
101 : "r" (addr)
102 );
103 return val;
104}
105
106static inline u32 readl(const volatile void __iomem *addr)
107{
108 u32 val;
109 asm volatile(
110 "%0 = memw(%1);"
111 : "=&r" (val)
112 : "r" (addr)
113 );
114 return val;
115}
116
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121
122
123static inline void writeb(u8 data, volatile void __iomem *addr)
124{
125 asm volatile(
126 "memb(%0) = %1;"
127 :
128 : "r" (addr), "r" (data)
129 : "memory"
130 );
131}
132
133static inline void writew(u16 data, volatile void __iomem *addr)
134{
135 asm volatile(
136 "memh(%0) = %1;"
137 :
138 : "r" (addr), "r" (data)
139 : "memory"
140 );
141
142}
143
144static inline void writel(u32 data, volatile void __iomem *addr)
145{
146 asm volatile(
147 "memw(%0) = %1;"
148 :
149 : "r" (addr), "r" (data)
150 : "memory"
151 );
152}
153
154#define __raw_writeb writeb
155#define __raw_writew writew
156#define __raw_writel writel
157
158#define __raw_readb readb
159#define __raw_readw readw
160#define __raw_readl readl
161
162
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164
165
166#define readb_relaxed __raw_readb
167#define readw_relaxed __raw_readw
168#define readl_relaxed __raw_readl
169
170#define writeb_relaxed __raw_writeb
171#define writew_relaxed __raw_writew
172#define writel_relaxed __raw_writel
173
174void __iomem *ioremap(unsigned long phys_addr, unsigned long size);
175#define ioremap_uc(X, Y) ioremap((X), (Y))
176
177
178#define __raw_writel writel
179
180static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
181 int count)
182{
183 memcpy(dst, (void *) src, count);
184}
185
186static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
187 int count)
188{
189 memcpy((void *) dst, src, count);
190}
191
192static inline void memset_io(volatile void __iomem *addr, int value,
193 size_t size)
194{
195 memset((void __force *)addr, value, size);
196}
197
198#define PCI_IO_ADDR (volatile void __iomem *)
199
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205
206static inline u8 inb(unsigned long port)
207{
208 return readb(_IO_BASE + (port & IO_SPACE_LIMIT));
209}
210
211static inline u16 inw(unsigned long port)
212{
213 return readw(_IO_BASE + (port & IO_SPACE_LIMIT));
214}
215
216static inline u32 inl(unsigned long port)
217{
218 return readl(_IO_BASE + (port & IO_SPACE_LIMIT));
219}
220
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224
225
226static inline void outb(u8 data, unsigned long port)
227{
228 writeb(data, _IO_BASE + (port & IO_SPACE_LIMIT));
229}
230
231static inline void outw(u16 data, unsigned long port)
232{
233 writew(data, _IO_BASE + (port & IO_SPACE_LIMIT));
234}
235
236static inline void outl(u32 data, unsigned long port)
237{
238 writel(data, _IO_BASE + (port & IO_SPACE_LIMIT));
239}
240
241#define outb_p outb
242#define outw_p outw
243#define outl_p outl
244
245#define inb_p inb
246#define inw_p inw
247#define inl_p inl
248
249static inline void insb(unsigned long port, void *buffer, int count)
250{
251 if (count) {
252 u8 *buf = buffer;
253 do {
254 u8 x = inb(port);
255 *buf++ = x;
256 } while (--count);
257 }
258}
259
260static inline void insw(unsigned long port, void *buffer, int count)
261{
262 if (count) {
263 u16 *buf = buffer;
264 do {
265 u16 x = inw(port);
266 *buf++ = x;
267 } while (--count);
268 }
269}
270
271static inline void insl(unsigned long port, void *buffer, int count)
272{
273 if (count) {
274 u32 *buf = buffer;
275 do {
276 u32 x = inw(port);
277 *buf++ = x;
278 } while (--count);
279 }
280}
281
282static inline void outsb(unsigned long port, const void *buffer, int count)
283{
284 if (count) {
285 const u8 *buf = buffer;
286 do {
287 outb(*buf++, port);
288 } while (--count);
289 }
290}
291
292static inline void outsw(unsigned long port, const void *buffer, int count)
293{
294 if (count) {
295 const u16 *buf = buffer;
296 do {
297 outw(*buf++, port);
298 } while (--count);
299 }
300}
301
302static inline void outsl(unsigned long port, const void *buffer, int count)
303{
304 if (count) {
305 const u32 *buf = buffer;
306 do {
307 outl(*buf++, port);
308 } while (--count);
309 }
310}
311
312#endif
313
314#endif
315