diff options
author | David Howells <dhowells@redhat.com> | 2006-12-05 12:01:28 -0500 |
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committer | David Howells <dhowells@warthog.cambridge.redhat.com> | 2006-12-05 12:01:28 -0500 |
commit | 9db73724453a9350e1c22dbe732d427e2939a5c9 (patch) | |
tree | 15e3ead6413ae97398a54292acc199bee0864d42 /arch/powerpc/boot/io.h | |
parent | 4c1ac1b49122b805adfa4efc620592f68dccf5db (diff) | |
parent | e62438630ca37539c8cc1553710bbfaa3cf960a7 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
drivers/ata/libata-scsi.c
include/linux/libata.h
Futher merge of Linus's head and compilation fixups.
Signed-Off-By: David Howells <dhowells@redhat.com>
Diffstat (limited to 'arch/powerpc/boot/io.h')
-rw-r--r-- | arch/powerpc/boot/io.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/powerpc/boot/io.h b/arch/powerpc/boot/io.h new file mode 100644 index 000000000000..32974ed49e02 --- /dev/null +++ b/arch/powerpc/boot/io.h | |||
@@ -0,0 +1,53 @@ | |||
1 | #ifndef _IO_H | ||
2 | #define __IO_H | ||
3 | /* | ||
4 | * Low-level I/O routines. | ||
5 | * | ||
6 | * Copied from <file:include/asm-powerpc/io.h> (which has no copyright) | ||
7 | */ | ||
8 | static inline int in_8(const volatile unsigned char *addr) | ||
9 | { | ||
10 | int ret; | ||
11 | |||
12 | __asm__ __volatile__("lbz%U1%X1 %0,%1; twi 0,%0,0; isync" | ||
13 | : "=r" (ret) : "m" (*addr)); | ||
14 | return ret; | ||
15 | } | ||
16 | |||
17 | static inline void out_8(volatile unsigned char *addr, int val) | ||
18 | { | ||
19 | __asm__ __volatile__("stb%U0%X0 %1,%0; sync" | ||
20 | : "=m" (*addr) : "r" (val)); | ||
21 | } | ||
22 | |||
23 | static inline unsigned in_le32(const volatile unsigned *addr) | ||
24 | { | ||
25 | unsigned ret; | ||
26 | |||
27 | __asm__ __volatile__("lwbrx %0,0,%1; twi 0,%0,0; isync" | ||
28 | : "=r" (ret) : "r" (addr), "m" (*addr)); | ||
29 | return ret; | ||
30 | } | ||
31 | |||
32 | static inline unsigned in_be32(const volatile unsigned *addr) | ||
33 | { | ||
34 | unsigned ret; | ||
35 | |||
36 | __asm__ __volatile__("lwz%U1%X1 %0,%1; twi 0,%0,0; isync" | ||
37 | : "=r" (ret) : "m" (*addr)); | ||
38 | return ret; | ||
39 | } | ||
40 | |||
41 | static inline void out_le32(volatile unsigned *addr, int val) | ||
42 | { | ||
43 | __asm__ __volatile__("stwbrx %1,0,%2; sync" : "=m" (*addr) | ||
44 | : "r" (val), "r" (addr)); | ||
45 | } | ||
46 | |||
47 | static inline void out_be32(volatile unsigned *addr, int val) | ||
48 | { | ||
49 | __asm__ __volatile__("stw%U0%X0 %1,%0; sync" | ||
50 | : "=m" (*addr) : "r" (val)); | ||
51 | } | ||
52 | |||
53 | #endif /* _IO_H */ | ||