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6#ifndef __ASM_ARC_IO_H
7#define __ASM_ARC_IO_H
8
9#include <linux/types.h>
10#include <asm/byteorder.h>
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15
16#define __comp_b() asm volatile("" : : : "memory")
17
18#ifdef __ARCHS__
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35#define mb() asm volatile("dmb 3\n" : : : "memory")
36#define rmb() asm volatile("dmb 1\n" : : : "memory")
37#define wmb() asm volatile("dmb 2\n" : : : "memory")
38
39#else
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46
47#define mb() asm volatile("sync\n" : : : "memory")
48#endif
49
50#ifdef __ARCHS__
51#define __iormb() rmb()
52#define __iowmb() wmb()
53#else
54#define __iormb() __comp_b()
55#define __iowmb() __comp_b()
56#endif
57
58static inline void sync(void)
59{
60
61}
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69
70#define __arch_getb(a) ({ u8 __v; __comp_b(); __v = *(volatile u8 *)(a); __comp_b(); __v; })
71#define __arch_getw(a) ({ u16 __v; __comp_b(); __v = *(volatile u16 *)(a); __comp_b(); __v; })
72#define __arch_getl(a) ({ u32 __v; __comp_b(); __v = *(volatile u32 *)(a); __comp_b(); __v; })
73#define __arch_getq(a) ({ u64 __v; __comp_b(); __v = *(volatile u64 *)(a); __comp_b(); __v; })
74
75#define __arch_putb(v, a) ({ __comp_b(); *(volatile u8 *)(a) = (v); __comp_b(); })
76#define __arch_putw(v, a) ({ __comp_b(); *(volatile u16 *)(a) = (v); __comp_b(); })
77#define __arch_putl(v, a) ({ __comp_b(); *(volatile u32 *)(a) = (v); __comp_b(); })
78#define __arch_putq(v, a) ({ __comp_b(); *(volatile u64 *)(a) = (v); __comp_b(); })
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86#define __raw_writeb(v, c) ({ __iowmb(); __arch_putb(v, c); })
87#define __raw_writew(v, c) ({ __iowmb(); __arch_putw(v, c); })
88#define __raw_writel(v, c) ({ __iowmb(); __arch_putl(v, c); })
89#define __raw_writeq(v, c) ({ __iowmb(); __arch_putq(v, c); })
90
91#define __raw_readb(c) ({ u8 __v = __arch_getb(c); __iormb(); __v; })
92#define __raw_readw(c) ({ u16 __v = __arch_getw(c); __iormb(); __v; })
93#define __raw_readl(c) ({ u32 __v = __arch_getl(c); __iormb(); __v; })
94#define __raw_readq(c) ({ u64 __v = __arch_getq(c); __iormb(); __v; })
95
96
97static inline void __raw_writesb(unsigned long addr, const void *data,
98 int bytelen)
99{
100 u8 *buf = (uint8_t *)data;
101
102 __iowmb();
103
104 while (bytelen--)
105 __arch_putb(*buf++, addr);
106}
107
108static inline void __raw_writesw(unsigned long addr, const void *data,
109 int wordlen)
110{
111 u16 *buf = (uint16_t *)data;
112
113 __iowmb();
114
115 while (wordlen--)
116 __arch_putw(*buf++, addr);
117}
118
119static inline void __raw_writesl(unsigned long addr, const void *data,
120 int longlen)
121{
122 u32 *buf = (uint32_t *)data;
123
124 __iowmb();
125
126 while (longlen--)
127 __arch_putl(*buf++, addr);
128}
129
130static inline void __raw_readsb(unsigned long addr, void *data, int bytelen)
131{
132 u8 *buf = (uint8_t *)data;
133
134 while (bytelen--)
135 *buf++ = __arch_getb(addr);
136
137 __iormb();
138}
139
140static inline void __raw_readsw(unsigned long addr, void *data, int wordlen)
141{
142 u16 *buf = (uint16_t *)data;
143
144 while (wordlen--)
145 *buf++ = __arch_getw(addr);
146
147 __iormb();
148}
149
150static inline void __raw_readsl(unsigned long addr, void *data, int longlen)
151{
152 u32 *buf = (uint32_t *)data;
153
154 while (longlen--)
155 *buf++ = __arch_getl(addr);
156
157 __iormb();
158}
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164
165#define readb_relaxed(c) ({ u8 __r = __arch_getb(c); __r; })
166#define readw_relaxed(c) ({ u16 __r = le16_to_cpu((__force __le16)__arch_getw(c)); __r; })
167#define readl_relaxed(c) ({ u32 __r = le32_to_cpu((__force __le32)__arch_getl(c)); __r; })
168#define readq_relaxed(c) ({ u64 __r = le64_to_cpu((__force __le64)__arch_getq(c)); __r; })
169
170#define writeb_relaxed(v, c) ((void)__arch_putb((v), (c)))
171#define writew_relaxed(v, c) ((void)__arch_putw((__force u16)cpu_to_le16(v), (c)))
172#define writel_relaxed(v, c) ((void)__arch_putl((__force u32)cpu_to_le32(v), (c)))
173#define writeq_relaxed(v, c) ((void)__arch_putq((__force u64)cpu_to_le64(v), (c)))
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187#define readb(c) ({ u8 __v = readb_relaxed(c); __iormb(); __v; })
188#define readw(c) ({ u16 __v = readw_relaxed(c); __iormb(); __v; })
189#define readl(c) ({ u32 __v = readl_relaxed(c); __iormb(); __v; })
190#define readq(c) ({ u64 __v = readq_relaxed(c); __iormb(); __v; })
191
192#define writeb(v, c) ({ __iowmb(); writeb_relaxed(v, c); })
193#define writew(v, c) ({ __iowmb(); writew_relaxed(v, c); })
194#define writel(v, c) ({ __iowmb(); writel_relaxed(v, c); })
195#define writeq(v, c) ({ __iowmb(); writeq_relaxed(v, c); })
196
197#define out_arch(type, endian, a, v) __raw_write##type(cpu_to_##endian(v), a)
198#define in_arch(type, endian, a) endian##_to_cpu(__raw_read##type(a))
199
200#define out_le32(a, v) out_arch(l, le32, a, v)
201#define out_le16(a, v) out_arch(w, le16, a, v)
202
203#define in_le32(a) in_arch(l, le32, a)
204#define in_le16(a) in_arch(w, le16, a)
205
206#define out_be32(a, v) out_arch(l, be32, a, v)
207#define out_be16(a, v) out_arch(w, be16, a, v)
208
209#define in_be32(a) in_arch(l, be32, a)
210#define in_be16(a) in_arch(w, be16, a)
211
212#define out_8(a, v) __raw_writeb(v, a)
213#define in_8(a) __raw_readb(a)
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223#define clrbits(type, addr, clear) \
224 out_##type((addr), in_##type(addr) & ~(clear))
225
226#define setbits(type, addr, set) \
227 out_##type((addr), in_##type(addr) | (set))
228
229#define clrsetbits(type, addr, clear, set) \
230 out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
231
232#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
233#define setbits_be32(addr, set) setbits(be32, addr, set)
234#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
235
236#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
237#define setbits_le32(addr, set) setbits(le32, addr, set)
238#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
239
240#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
241#define setbits_be16(addr, set) setbits(be16, addr, set)
242#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
243
244#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
245#define setbits_le16(addr, set) setbits(le16, addr, set)
246#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
247
248#define clrbits_8(addr, clear) clrbits(8, addr, clear)
249#define setbits_8(addr, set) setbits(8, addr, set)
250#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
251
252#include <asm-generic/io.h>
253
254#endif
255