diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sh/kernel/io.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/sh/kernel/io.c')
-rw-r--r-- | arch/sh/kernel/io.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/sh/kernel/io.c b/arch/sh/kernel/io.c new file mode 100644 index 000000000000..d9932f25993b --- /dev/null +++ b/arch/sh/kernel/io.c | |||
@@ -0,0 +1,59 @@ | |||
1 | /* | ||
2 | * linux/arch/sh/kernel/io.c | ||
3 | * | ||
4 | * Copyright (C) 2000 Stuart Menefy | ||
5 | * | ||
6 | * Provide real functions which expand to whatever the header file defined. | ||
7 | * Also definitions of machine independent IO functions. | ||
8 | */ | ||
9 | |||
10 | #include <asm/io.h> | ||
11 | #include <linux/module.h> | ||
12 | |||
13 | /* | ||
14 | * Copy data from IO memory space to "real" memory space. | ||
15 | * This needs to be optimized. | ||
16 | */ | ||
17 | void memcpy_fromio(void * to, unsigned long from, unsigned long count) | ||
18 | { | ||
19 | char *p = to; | ||
20 | while (count) { | ||
21 | count--; | ||
22 | *p = readb(from); | ||
23 | p++; | ||
24 | from++; | ||
25 | } | ||
26 | } | ||
27 | |||
28 | /* | ||
29 | * Copy data from "real" memory space to IO memory space. | ||
30 | * This needs to be optimized. | ||
31 | */ | ||
32 | void memcpy_toio(unsigned long to, const void * from, unsigned long count) | ||
33 | { | ||
34 | const char *p = from; | ||
35 | while (count) { | ||
36 | count--; | ||
37 | writeb(*p, to); | ||
38 | p++; | ||
39 | to++; | ||
40 | } | ||
41 | } | ||
42 | |||
43 | /* | ||
44 | * "memset" on IO memory space. | ||
45 | * This needs to be optimized. | ||
46 | */ | ||
47 | void memset_io(unsigned long dst, int c, unsigned long count) | ||
48 | { | ||
49 | while (count) { | ||
50 | count--; | ||
51 | writeb(c, dst); | ||
52 | dst++; | ||
53 | } | ||
54 | } | ||
55 | |||
56 | EXPORT_SYMBOL(memcpy_fromio); | ||
57 | EXPORT_SYMBOL(memcpy_toio); | ||
58 | EXPORT_SYMBOL(memset_io); | ||
59 | |||