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/*
* arch/arm/mach-s3c2410/include/mach/io.h
* from arch/arm/mach-rpc/include/mach/io.h
*
* Copyright (C) 1997 Russell King
* (C) 2003 Simtec Electronics
*/
#ifndef __ASM_ARM_ARCH_IO_H
#define __ASM_ARM_ARCH_IO_H
#include <mach/hardware.h>
#define IO_SPACE_LIMIT 0xffffffff
/*
* We use two different types of addressing - PC style addresses, and ARM
* addresses. PC style accesses the PC hardware with the normal PC IO
* addresses, eg 0x3f8 for serial#1. ARM addresses are above A28
* and are translated to the start of IO. Note that all addresses are
* not shifted left!
*/
#define __PORT_PCIO(x) ((x) < (1<<28))
#define PCIO_BASE (S3C24XX_VA_ISA_WORD)
#define PCIO_BASE_b (S3C24XX_VA_ISA_BYTE)
#define PCIO_BASE_w (S3C24XX_VA_ISA_WORD)
#define PCIO_BASE_l (S3C24XX_VA_ISA_WORD)
/*
* Dynamic IO functions - let the compiler
* optimize the expressions
*/
#define DECLARE_DYN_OUT(sz,fnsuffix,instr) \
static inline void __out##fnsuffix (unsigned int val, unsigned int port) \
{ \
unsigned long temp; \
__asm__ __volatile__( \
"cmp %2, #(1<<28)\n\t" \
"mov %0, %2\n\t" \
"addcc %0, %0, %3\n\t" \
"str" instr " %1, [%0, #0 ] @ out" #fnsuffix \
: "=&r" (temp) \
: "r" (val), "r" (port), "Ir" (PCIO_BASE_##fnsuffix) \
: "cc"); \
}
#define DECLARE_DYN_IN(sz,fnsuffix,instr) \
static inline unsigned sz __in##fnsuffix (unsigned int port) \
{ \
unsigned long temp, value; \
__asm__ __volatile__( \
"cmp %2, #(1<<28)\n\t" \
"mov %0, %2\n\t" \
"addcc %0, %0, %3\n\t" \
"ldr" instr " %1, [%0, #0 ] @ in" #fnsuffix \
: "=&r" (temp), "=r" (value) \
: "r" (port), "Ir" (PCIO_BASE_##fnsuffix) \
: "cc"); \
return (unsigned sz)value; \
}
static inline void __iomem *__ioaddr (unsigned long port)
{
return __PORT_PCIO(port) ? (PCIO_BASE + port) : (void __iomem *)port;
}
#define DECLARE_IO(sz,fnsuffix,instr) \
DECLARE_DYN_IN(sz,fnsuffix,instr) \
DECLARE_DYN_OUT(sz,fnsuffix,instr)
DECLARE_IO(char,b,"b")
DECLARE_IO(short,w,"h")
DECLARE_IO(int,l,"")
#define __mem_pci(x) (x)
#define __io(x) ((void __iomem *)(x))
#endif
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