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/*

 * 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)             (PCIO_BASE + (a))

#define __mem_pci(a)            ((unsigned long)(a))

#define __mem_isa(a)            ((unsigned long)(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)

#define __arch_ioremap          __ioremap

#endif