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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm/arch-l7200/io.h
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 'include/asm-arm/arch-l7200/io.h')
-rw-r--r--include/asm-arm/arch-l7200/io.h76
1 files changed, 76 insertions, 0 deletions
diff --git a/include/asm-arm/arch-l7200/io.h b/include/asm-arm/arch-l7200/io.h
new file mode 100644
index 000000000000..fc012a39e2cb
--- /dev/null
+++ b/include/asm-arm/arch-l7200/io.h
@@ -0,0 +1,76 @@
1/*
2 * linux/include/asm-arm/arch-l7200/io.h
3 *
4 * Copyright (C) 2000 Steve Hill (sjhill@cotw.com)
5 *
6 * Changelog:
7 * 03-21-2000 SJH Created from linux/include/asm-arm/arch-nexuspci/io.h
8 * 08-31-2000 SJH Added in IO functions necessary for new drivers
9 */
10#ifndef __ASM_ARM_ARCH_IO_H
11#define __ASM_ARM_ARCH_IO_H
12
13#include <asm/arch/hardware.h>
14
15#define IO_SPACE_LIMIT 0xffffffff
16
17/*
18 * There are not real ISA nor PCI buses, so we fake it.
19 */
20#define __io_pci(a) ((void __iomem *)(PCIO_BASE + (a)))
21#define __mem_pci(a) (a)
22#define __mem_isa(a) (a)
23
24#define __ioaddr(p) __io_pci(p)
25
26/*
27 * Generic virtual read/write
28 */
29#define __arch_getb(a) (*(volatile unsigned char *)(a))
30#define __arch_getl(a) (*(volatile unsigned int *)(a))
31
32static inline unsigned int __arch_getw(unsigned long a)
33{
34 unsigned int value;
35 __asm__ __volatile__("ldr%?h %0, [%1, #0] @ getw"
36 : "=&r" (value)
37 : "r" (a));
38 return value;
39}
40
41#define __arch_putb(v,a) (*(volatile unsigned char *)(a) = (v))
42#define __arch_putl(v,a) (*(volatile unsigned int *)(a) = (v))
43
44static inline void __arch_putw(unsigned int value, unsigned long a)
45{
46 __asm__ __volatile__("str%?h %0, [%1, #0] @ putw"
47 : : "r" (value), "r" (a));
48}
49
50/*
51 * Translated address IO functions
52 *
53 * IO address has already been translated to a virtual address
54 */
55#define outb_t(v,p) (*(volatile unsigned char *)(p) = (v))
56#define inb_t(p) (*(volatile unsigned char *)(p))
57#define outw_t(v,p) (*(volatile unsigned int *)(p) = (v))
58#define inw_t(p) (*(volatile unsigned int *)(p))
59#define outl_t(v,p) (*(volatile unsigned long *)(p) = (v))
60#define inl_t(p) (*(volatile unsigned long *)(p))
61
62/*
63 * FIXME - These are to allow for linking. On all the other
64 * ARM platforms, the entire IO space is contiguous.
65 * The 7200 has three separate IO spaces. The below
66 * macros will eventually become more involved. Use
67 * with caution and don't be surprised by kernel oopses!!!
68 */
69#define inb(p) inb_t(p)
70#define inw(p) inw_t(p)
71#define inl(p) inl_t(p)
72#define outb(v,p) outb_t(v,p)
73#define outw(v,p) outw_t(v,p)
74#define outl(v,p) outl_t(v,p)
75
76#endif