tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 */