blob: cab8ad0adf09e3dcb60176b93aa1ef7c2ff7c720 [file] [log] [blame]
* linux/include/asm-arm/arch-l7200/io.h
* Copyright (C) 2000 Steve Hill (
* 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/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)