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/arch/ia64/lib/io.c

https://bitbucket.org/evzijst/gittest
C | 165 lines | 128 code | 25 blank | 12 comment | 3 complexity | 06a189aed447ad496f776f9acefd9363 MD5 | raw file
  1#include <linux/config.h>
  2#include <linux/module.h>
  3#include <linux/types.h>
  4
  5#include <asm/io.h>
  6
  7/*
  8 * Copy data from IO memory space to "real" memory space.
  9 * This needs to be optimized.
 10 */
 11void memcpy_fromio(void *to, const volatile void __iomem *from, long count)
 12{
 13	char *dst = to;
 14
 15	while (count) {
 16		count--;
 17		*dst++ = readb(from++);
 18	}
 19}
 20EXPORT_SYMBOL(memcpy_fromio);
 21
 22/*
 23 * Copy data from "real" memory space to IO memory space.
 24 * This needs to be optimized.
 25 */
 26void memcpy_toio(volatile void __iomem *to, const void *from, long count)
 27{
 28	const char *src = from;
 29
 30	while (count) {
 31		count--;
 32		writeb(*src++, to++);
 33	}
 34}
 35EXPORT_SYMBOL(memcpy_toio);
 36
 37/*
 38 * "memset" on IO memory space.
 39 * This needs to be optimized.
 40 */
 41void memset_io(volatile void __iomem *dst, int c, long count)
 42{
 43	unsigned char ch = (char)(c & 0xff);
 44
 45	while (count) {
 46		count--;
 47		writeb(ch, dst);
 48		dst++;
 49	}
 50}
 51EXPORT_SYMBOL(memset_io);
 52
 53#ifdef CONFIG_IA64_GENERIC
 54
 55#undef __ia64_inb
 56#undef __ia64_inw
 57#undef __ia64_inl
 58#undef __ia64_outb
 59#undef __ia64_outw
 60#undef __ia64_outl
 61#undef __ia64_readb
 62#undef __ia64_readw
 63#undef __ia64_readl
 64#undef __ia64_readq
 65#undef __ia64_readb_relaxed
 66#undef __ia64_readw_relaxed
 67#undef __ia64_readl_relaxed
 68#undef __ia64_readq_relaxed
 69#undef __ia64_writeb
 70#undef __ia64_writew
 71#undef __ia64_writel
 72#undef __ia64_writeq
 73#undef __ia64_mmiowb
 74
 75unsigned int
 76__ia64_inb (unsigned long port)
 77{
 78	return ___ia64_inb(port);
 79}
 80
 81unsigned int
 82__ia64_inw (unsigned long port)
 83{
 84	return ___ia64_inw(port);
 85}
 86
 87unsigned int
 88__ia64_inl (unsigned long port)
 89{
 90	return ___ia64_inl(port);
 91}
 92
 93void
 94__ia64_outb (unsigned char val, unsigned long port)
 95{
 96	___ia64_outb(val, port);
 97}
 98
 99void
100__ia64_outw (unsigned short val, unsigned long port)
101{
102	___ia64_outw(val, port);
103}
104
105void
106__ia64_outl (unsigned int val, unsigned long port)
107{
108	___ia64_outl(val, port);
109}
110
111unsigned char
112__ia64_readb (void __iomem *addr)
113{
114	return ___ia64_readb (addr);
115}
116
117unsigned short
118__ia64_readw (void __iomem *addr)
119{
120	return ___ia64_readw (addr);
121}
122
123unsigned int
124__ia64_readl (void __iomem *addr)
125{
126	return ___ia64_readl (addr);
127}
128
129unsigned long
130__ia64_readq (void __iomem *addr)
131{
132	return ___ia64_readq (addr);
133}
134
135unsigned char
136__ia64_readb_relaxed (void __iomem *addr)
137{
138	return ___ia64_readb (addr);
139}
140
141unsigned short
142__ia64_readw_relaxed (void __iomem *addr)
143{
144	return ___ia64_readw (addr);
145}
146
147unsigned int
148__ia64_readl_relaxed (void __iomem *addr)
149{
150	return ___ia64_readl (addr);
151}
152
153unsigned long
154__ia64_readq_relaxed (void __iomem *addr)
155{
156	return ___ia64_readq (addr);
157}
158
159void
160__ia64_mmiowb(void)
161{
162	___ia64_mmiowb();
163}
164
165#endif /* CONFIG_IA64_GENERIC */