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7#ifndef _ASM_IO_H
8#define _ASM_IO_H
9
10#include <linux/compiler.h>
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45#define IO_SPACE_LIMIT 0xffff
46
47#include <asm/types.h>
48
49
50#ifdef __KERNEL__
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59
60#define readb(addr) (*(volatile unsigned char *) (addr))
61#define readw(addr) (*(volatile unsigned short *) (addr))
62#define readl(addr) (*(volatile unsigned int *) (addr))
63#define readq(addr) (*(volatile unsigned long long *) (addr))
64#define __raw_readb readb
65#define __raw_readw readw
66#define __raw_readl readl
67#define __raw_readq readq
68
69#define writeb(b,addr) (*(volatile unsigned char *) (addr) = (b))
70#define writew(b,addr) (*(volatile unsigned short *) (addr) = (b))
71#define writel(b,addr) (*(volatile unsigned int *) (addr) = (b))
72#define writeq(b,addr) (*(volatile unsigned long long *) (addr) = (b))
73#define __raw_writeb writeb
74#define __raw_writew writew
75#define __raw_writel writel
76#define __raw_writeq writeq
77
78#define memset_io(a,b,c) memset((a),(b),(c))
79#define memcpy_fromio(a,b,c) memcpy((a),(b),(c))
80#define memcpy_toio(a,b,c) memcpy((a),(b),(c))
81
82#define out_arch(type, endian, a, v) __raw_write##type(cpu_to_##endian(v), a)
83#define in_arch(type, endian, a) endian##_to_cpu(__raw_read##type(a))
84
85#define out_le64(a, v) out_arch(q, le64, a, v)
86#define out_le32(a, v) out_arch(l, le32, a, v)
87#define out_le16(a, v) out_arch(w, le16, a, v)
88
89#define in_le64(a) in_arch(q, le64, a)
90#define in_le32(a) in_arch(l, le32, a)
91#define in_le16(a) in_arch(w, le16, a)
92
93#define out_be32(a, v) out_arch(l, be32, a, v)
94#define out_be16(a, v) out_arch(w, be16, a, v)
95
96#define in_be32(a) in_arch(l, be32, a)
97#define in_be16(a) in_arch(w, be16, a)
98
99#define out_8(a, v) __raw_writeb(v, a)
100#define in_8(a) __raw_readb(a)
101
102#define clrbits(type, addr, clear) \
103 out_##type((addr), in_##type(addr) & ~(clear))
104
105#define setbits(type, addr, set) \
106 out_##type((addr), in_##type(addr) | (set))
107
108#define clrsetbits(type, addr, clear, set) \
109 out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
110
111#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
112#define setbits_be32(addr, set) setbits(be32, addr, set)
113#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
114
115#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
116#define setbits_le32(addr, set) setbits(le32, addr, set)
117#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
118
119#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
120#define setbits_be16(addr, set) setbits(be16, addr, set)
121#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
122
123#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
124#define setbits_le16(addr, set) setbits(le16, addr, set)
125#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
126
127#define clrbits_8(addr, clear) clrbits(8, addr, clear)
128#define setbits_8(addr, set) setbits(8, addr, set)
129#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
130
131#endif
132
133#ifdef SLOW_IO_BY_JUMPING
134#define __SLOW_DOWN_IO "\njmp 1f\n1:\tjmp 1f\n1:"
135#else
136#define __SLOW_DOWN_IO "\noutb %%al,$0xed"
137#endif
138
139#ifdef REALLY_SLOW_IO
140#define __FULL_SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO
141#else
142#define __FULL_SLOW_DOWN_IO __SLOW_DOWN_IO
143#endif
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148
149#define __OUT1(s,x) \
150static inline void _out##s(unsigned x value, unsigned short port) {
151
152#define __OUT2(s,s1,s2) \
153__asm__ __volatile__ ("out" #s " %" s1 "0,%" s2 "1"
154
155
156#define __OUT(s,s1,x) \
157__OUT1(s,x) __OUT2(s,s1,"w") : : "a" (value), "Nd" (port)); } \
158__OUT1(s##_p,x) __OUT2(s,s1,"w") __FULL_SLOW_DOWN_IO : : "a" (value), "Nd" (port));}
159
160#define __IN1(s) \
161static inline RETURN_TYPE _in##s(unsigned short port) { RETURN_TYPE _v;
162
163#define __IN2(s,s1,s2) \
164__asm__ __volatile__ ("in" #s " %" s2 "1,%" s1 "0"
165
166#define __IN(s,s1,i...) \
167__IN1(s) __IN2(s,s1,"w") : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \
168__IN1(s##_p) __IN2(s,s1,"w") __FULL_SLOW_DOWN_IO : "=a" (_v) : "Nd" (port) ,##i ); return _v; }
169
170#define __INS(s) \
171static inline void ins##s(unsigned short port, void * addr, unsigned long count) \
172{ __asm__ __volatile__ ("rep ; ins" #s \
173: "=D" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); }
174
175#define __OUTS(s) \
176static inline void outs##s(unsigned short port, const void * addr, unsigned long count) \
177{ __asm__ __volatile__ ("rep ; outs" #s \
178: "=S" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); }
179
180#define RETURN_TYPE unsigned char
181__IN(b,"")
182#undef RETURN_TYPE
183#define RETURN_TYPE unsigned short
184__IN(w,"")
185#undef RETURN_TYPE
186#define RETURN_TYPE unsigned int
187__IN(l,"")
188#undef RETURN_TYPE
189
190#define inb(port) _inb((uintptr_t)(port))
191#define inw(port) _inw((uintptr_t)(port))
192#define inl(port) _inl((uintptr_t)(port))
193
194__OUT(b,"b",char)
195__OUT(w,"w",short)
196__OUT(l,,int)
197
198#define outb(val, port) _outb(val, (uintptr_t)(port))
199#define outw(val, port) _outw(val, (uintptr_t)(port))
200#define outl(val, port) _outl(val, (uintptr_t)(port))
201
202__INS(b)
203__INS(w)
204__INS(l)
205
206__OUTS(b)
207__OUTS(w)
208__OUTS(l)
209
210
211#define clrio(type, addr, clear) \
212 out##type(in##type(addr) & ~(clear), (addr))
213
214#define setio(type, addr, set) \
215 out##type(in##type(addr) | (set), (addr))
216
217#define clrsetio(type, addr, clear, set) \
218 out##type((in##type(addr) & ~(clear)) | (set), (addr))
219
220#define clrio_32(addr, clear) clrio(l, addr, clear)
221#define clrio_16(addr, clear) clrio(w, addr, clear)
222#define clrio_8(addr, clear) clrio(b, addr, clear)
223
224#define setio_32(addr, set) setio(l, addr, set)
225#define setio_16(addr, set) setio(w, addr, set)
226#define setio_8(addr, set) setio(b, addr, set)
227
228#define clrsetio_32(addr, clear, set) clrsetio(l, addr, clear, set)
229#define clrsetio_16(addr, clear, set) clrsetio(w, addr, clear, set)
230#define clrsetio_8(addr, clear, set) clrsetio(b, addr, clear, set)
231
232static inline void sync(void)
233{
234}
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240#define dmb() __asm__ __volatile__ ("" : : : "memory")
241#define __iormb() dmb()
242#define __iowmb() dmb()
243
244#include <asm-generic/io.h>
245
246#endif
247