diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /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.h | 76 |
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 00000000000..fc012a39e2c --- /dev/null +++ b/include/asm-arm/arch-l7200/io.h @@ -0,0 +1,76 @@ +/* + * linux/include/asm-arm/arch-l7200/io.h + * + * Copyright (C) 2000 Steve Hill (sjhill@cotw.com) + * + * Changelog: + * 03-21-2000 SJH Created from linux/include/asm-arm/arch-nexuspci/io.h + * 08-31-2000 SJH Added in IO functions necessary for new drivers + */ +#ifndef __ASM_ARM_ARCH_IO_H +#define __ASM_ARM_ARCH_IO_H + +#include <asm/arch/hardware.h> + +#define IO_SPACE_LIMIT 0xffffffff + +/* + * There are not real ISA nor PCI buses, so we fake it. + */ +#define __io_pci(a) ((void __iomem *)(PCIO_BASE + (a))) +#define __mem_pci(a) (a) +#define __mem_isa(a) (a) + +#define __ioaddr(p) __io_pci(p) + +/* + * Generic virtual read/write + */ +#define __arch_getb(a) (*(volatile unsigned char *)(a)) +#define __arch_getl(a) (*(volatile unsigned int *)(a)) + +static inline unsigned int __arch_getw(unsigned long a) +{ + unsigned int value; + __asm__ __volatile__("ldr%?h %0, [%1, #0] @ getw" + : "=&r" (value) + : "r" (a)); + return value; +} + +#define __arch_putb(v,a) (*(volatile unsigned char *)(a) = (v)) +#define __arch_putl(v,a) (*(volatile unsigned int *)(a) = (v)) + +static inline void __arch_putw(unsigned int value, unsigned long a) +{ + __asm__ __volatile__("str%?h %0, [%1, #0] @ putw" + : : "r" (value), "r" (a)); +} + +/* + * Translated address IO functions + * + * IO address has already been translated to a virtual address + */ +#define outb_t(v,p) (*(volatile unsigned char *)(p) = (v)) +#define inb_t(p) (*(volatile unsigned char *)(p)) +#define outw_t(v,p) (*(volatile unsigned int *)(p) = (v)) +#define inw_t(p) (*(volatile unsigned int *)(p)) +#define outl_t(v,p) (*(volatile unsigned long *)(p) = (v)) +#define inl_t(p) (*(volatile unsigned long *)(p)) + +/* + * FIXME - These are to allow for linking. On all the other + * ARM platforms, the entire IO space is contiguous. + * The 7200 has three separate IO spaces. The below + * macros will eventually become more involved. Use + * with caution and don't be surprised by kernel oopses!!! + */ +#define inb(p) inb_t(p) +#define inw(p) inw_t(p) +#define inl(p) inl_t(p) +#define outb(v,p) outb_t(v,p) +#define outw(v,p) outw_t(v,p) +#define outl(v,p) outl_t(v,p) + +#endif |