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/*
* linux/include/asm-arm/io.h
*
* Copyright (C) 1996 Russell King
*
* Modifications:
* 16-Sep-1996 RMK Inlined the inx/outx functions & optimised for both
* constant addresses and variable addresses.
* 04-Dec-1997 RMK Moved a lot of this stuff to the new architecture
* specific IO header files.
*/
#ifndef __ASM_ARM_IO_H
#define __ASM_ARM_IO_H
#include <asm/hardware.h>
#include <asm/arch/mmu.h>
#include <asm/arch/io.h>
/* unsigned long virt_to_phys(void *x) */
#define virt_to_phys(x) (__virt_to_phys((unsigned long)(x)))
/* void *phys_to_virt(unsigned long x) */
#define phys_to_virt(x) ((void *)(__phys_to_virt((unsigned long)(x))))
/*
* Virtual view <-> DMA view memory address translations
* virt_to_bus: Used to translate the virtual address to an
* address suitable to be passed to set_dma_addr
* bus_to_virt: Used to convert an address for DMA operations
* to an address that the kernel can use.
*/
#define virt_to_bus(x) (__virt_to_bus((unsigned long)(x)))
#define bus_to_virt(x) ((void *)(__bus_to_virt(x)))
/*
* These macros actually build the multi-value IO function prototypes
*/
#define __OUTS(s,i,x) extern void outs##s(unsigned int port, const void *from, int len);
#define __INS(s,i,x) extern void ins##s(unsigned int port, void *to, int len);
#define __IO(s,i,x) \
__OUTS(s,i,x) \
__INS(s,i,x)
__IO(b,"b",char)
__IO(w,"h",short)
__IO(l,"",long)
/*
* Note that due to the way __builtin_constant_t() works, you
* - can't use it inside an inline function (it will never be true)
* - you don't have to worry about side effects withing the __builtin..
*/
#ifdef __outbc
#define outb(val,port) \
(__builtin_constant_p((port)) ? __outbc((val),(port)) : __outb((val),(port)))
#else
#define outb(val,port) __outb((val),(port))
#endif
#ifdef __outwc
#define outw(val,port) \
(__builtin_constant_p((port)) ? __outwc((val),(port)) : __outw((val),(port)))
#else
#define outw(val,port) __outw((val),(port))
#endif
#ifdef __outlc
#define outl(val,port) \
(__builtin_constant_p((port)) ? __outlc((val),(port)) : __outl((val),(port)))
#else
#define outl(val,port) __outl((val),(port))
#endif
#ifdef __inbc
#define inb(port) \
(__builtin_constant_p((port)) ? __inbc((port)) : __inb((port)))
#else
#define inb(port) __inb((port))
#endif
#ifdef __inwc
#define inw(port) \
(__builtin_constant_p((port)) ? __inwc((port)) : __inw((port)))
#else
#define inw(port) __inw((port))
#endif
#ifdef __inlc
#define inl(port) \
(__builtin_constant_p((port)) ? __inlc((port)) : __inl((port)))
#else
#define inl(port) __inl((port))
#endif
/*
* This macro will give you the translated IO address for this particular
* architecture, which can be used with the out_t... functions.
*/
#define ioaddr(port) \
(__builtin_constant_p((port)) ? __ioaddrc((port)) : __ioaddr((port)))
#ifndef ARCH_IO_DELAY
/*
* This architecture does not require any delayed IO.
* It is handled in the hardware.
*/
#define outb_p(val,port) outb((val),(port))
#define outw_p(val,port) outw((val),(port))
#define outl_p(val,port) outl((val),(port))
#define inb_p(port) inb((port))
#define inw_p(port) inw((port))
#define inl_p(port) inl((port))
#define outsb_p(port,from,len) outsb(port,from,len)
#define outsw_p(port,from,len) outsw(port,from,len)
#define outsl_p(port,from,len) outsl(port,from,len)
#define insb_p(port,to,len) insb(port,to,len)
#define insw_p(port,to,len) insw(port,to,len)
#define insl_p(port,to,len) insl(port,to,len)
#else
/*
* We have to delay the IO...
*/
#ifdef __outbc_p
#define outb_p(val,port) \
(__builtin_constant_p((port)) ? __outbc_p((val),(port)) : __outb_p((val),(port)))
#else
#define outb_p(val,port) __outb_p((val),(port))
#endif
#ifdef __outwc_p
#define outw_p(val,port) \
(__builtin_constant_p((port)) ? __outwc_p((val),(port)) : __outw_p((val),(port)))
#else
#define outw_p(val,port) __outw_p((val),(port))
#endif
#ifdef __outlc_p
#define outl_p(val,port) \
(__builtin_constant_p((port)) ? __outlc_p((val),(port)) : __outl_p((val),(port)))
#else
#define outl_p(val,port) __outl_p((val),(port))
#endif
#ifdef __inbc_p
#define inb_p(port) \
(__builtin_constant_p((port)) ? __inbc_p((port)) : __inb_p((port)))
#else
#define inb_p(port) __inb_p((port))
#endif
#ifdef __inwc_p
#define inw_p(port) \
(__builtin_constant_p((port)) ? __inwc_p((port)) : __inw_p((port)))
#else
#define inw_p(port) __inw_p((port))
#endif
#ifdef __inlc_p
#define inl_p(port) \
(__builtin_constant_p((port)) ? __inlc_p((port)) : __inl_p((port)))
#else
#define inl_p(port) __inl_p((port))
#endif
#endif
#undef ARCH_IO_DELAY
#undef ARCH_IO_CONSTANT
/*
* Leftovers...
*/
#if 0
#define __outwc(value,port) \
({ \
if (port < 256) \
__asm__ __volatile__( \
"strh %0, [%1, %2]" \
: : "r" (value), "r" (PCIO_BASE), "J" (port << 2)); \
else if (__PORT_PCIO(port)) \
__asm__ __volatile__( \
"strh %0, [%1, %2]" \
: : "r" (value), "r" (PCIO_BASE), "r" (port << 2)); \
else \
__asm__ __volatile__( \
"strh %0, [%1, %2]" \
: : "r" (value), "r" (IO_BASE), "r" (port << 2)); \
})
#define __inwc(port) \
({ \
unsigned short result; \
if (port < 256) \
__asm__ __volatile__( \
"ldrh %0, [%1, %2]" \
: "=r" (result) : "r" (PCIO_BASE), "J" (port << 2)); \
else \
if (__PORT_PCIO(port)) \
__asm__ __volatile__( \
"ldrh %0, [%1, %2]" \
: "=r" (result) : "r" (PCIO_BASE), "r" (port << 2)); \
else \
__asm__ __volatile__( \
"ldrh %0, [%1, %2]" \
: "=r" (result) : "r" (IO_BASE), "r" (port << 2)); \
result; \
})
#endif
#endif
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