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#ifndef _OR32_IO_H
#define _OR32_IO_H
 
/*
 * readX/writeX() are used to access memory mapped devices. On some
 * architectures the memory mapped IO stuff needs to be accessed
 * differently. On the m68k architecture, we just read/write the
 * memory location directly.
 */
/* ++roman: The assignments to temp. vars avoid that gcc sometimes generates
 * two accesses to memory, which may be undesireable for some devices.
 */
#define readb(addr) \
    ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
#define readw(addr) \
    ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
#define readl(addr) \
    ({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; })
 
#define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b))
#define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b))
#define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b))
 
/* There is no difference between I/O and memory on 68k, these are the same */
#define inb(addr) \
    ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
#define inw(addr) \
    ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
#define inl(addr) \
    ({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; })
 
#define outb(b,addr) ((*(volatile unsigned char *) (addr)) = (b))
#define outw(b,addr) ((*(volatile unsigned short *) (addr)) = (b))
#define outl(b,addr) ((*(volatile unsigned int *) (addr)) = (b))
 
#define	inb_p	inb
#define	inw_p	inw
#define	outb_p	outb
#define	outw_p	outw
 
#define REG8(addr)  (*(volatile unsigned char *) (addr))
#define REG16(addr) (*(volatile unsigned short *) (addr))
#define REG32(addr) (*(volatile unsigned int *) (addr))
 
 
static inline void outsb(void *addr, void *buf, int len)
{
	volatile unsigned char *ap = (volatile unsigned char *) addr;
	unsigned char *bp = (unsigned char *) buf;
	while (len--)
		*ap = *bp++;
}
 
static inline void outsw(void *addr, void *buf, int len)
{
	volatile unsigned short *ap = (volatile unsigned short *) addr;
	unsigned short *bp = (unsigned short *) buf;
	while (len--)
		*ap = *bp++;
}
 
static inline void outsl(void *addr, void *buf, int len)
{
	volatile unsigned int *ap = (volatile unsigned int *) addr;
	unsigned int *bp = (unsigned int *) buf;
	while (len--)
		*ap = *bp++;
}
 
static inline void insb(void *addr, void *buf, int len)
{
	volatile unsigned char *ap = (volatile unsigned char *) addr;
	unsigned char *bp = (unsigned char *) buf;
	while (len--)
		*bp++ = *ap;
}
 
static inline void insw(void *addr, void *buf, int len)
{
	volatile unsigned short *ap = (volatile unsigned short *) addr;
	unsigned short *bp = (unsigned short *) buf;
	while (len--)
		*bp++ = *ap;
}
 
static inline void insl(void *addr, void *buf, int len)
{
	volatile unsigned int *ap = (volatile unsigned int *) addr;
	unsigned int *bp = (unsigned int *) buf;
	while (len--)
		*bp++ = *ap;
}
 
/*
 * Change virtual addresses to physical addresses and vv.
 * These are trivial on the 1:1 Linux/i386 mapping (but if we ever
 * make the kernel segment mapped at 0, we need to do translation
 * on the i386 as well)
 */
extern unsigned long mm_vtop(unsigned long addr);
extern unsigned long mm_ptov(unsigned long addr);
 
extern inline unsigned long virt_to_phys(volatile void * address)
{
	return (unsigned long) mm_vtop((unsigned long)address);
}
 
extern inline void * phys_to_virt(unsigned long address)
{
	return (void *) mm_ptov(address);
}
 
/*
 * IO bus memory addresses are also 1:1 with the physical address
 */
#define virt_to_bus virt_to_phys
#define bus_to_virt phys_to_virt
 
 
#endif /* _OR32_IO_H */