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/*
* linux/include/asm-arm/arch-tbox/io.h
*
* Copyright (C) 1996-1999 Russell King
* Copyright (C) 1998, 1999 Philip Blundell
*
*/
#ifndef __ASM_ARM_ARCH_IO_H
#define __ASM_ARM_ARCH_IO_H
#define IO_SPACE_LIMIT 0xffffffff
#define __io(_x) ((_x) << 2)
/*
* Generic virtual read/write
*/
extern __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;
}
extern __inline__ void __arch_putw(unsigned int value, unsigned long a)
{
__asm__ __volatile__("str%?h %0, [%1, #0] @ putw"
: : "r" (value), "r" (a));
}
/* Idem, for devices on the upper byte lanes */
#define inb_u(p) __arch_getb(__io_pc(p) + 2)
#define inw_u(p) __arch_getw(__io_pc(p) + 2)
#define outb_u(v,p) __arch_putb(v,__io_pc(p) + 2)
#define outw_u(v,p) __arch_putw(v,__io_pc(p) + 2)
#endif
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