Viewing file:  io.h (1.18 KB) -rw-r--r--
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#ifndef _H8300_IO_H
#define _H8300_IO_H
#ifdef __KERNEL__
#include <asm-generic/io.h>
/* H8/300 internal I/O functions */
static inline unsigned char ctrl_inb(unsigned long addr)
{
return *(volatile unsigned char *)addr;
}
static inline unsigned short ctrl_inw(unsigned long addr)
{
return *(volatile unsigned short *)addr;
}
static inline unsigned long ctrl_inl(unsigned long addr)
{
return *(volatile unsigned long *)addr;
}
static inline void ctrl_outb(unsigned char b, unsigned long addr)
{
*(volatile unsigned char *)addr = b;
}
static inline void ctrl_outw(unsigned short b, unsigned long addr)
{
*(volatile unsigned short *)addr = b;
}
static inline void ctrl_outl(unsigned long b, unsigned long addr)
{
*(volatile unsigned long *)addr = b;
}
static inline void ctrl_bclr(int b, unsigned char *addr)
{
if (__builtin_constant_p(b))
__asm__("bclr %1,%0" : "+WU"(*addr): "i"(b));
else
__asm__("bclr %w1,%0" : "+WU"(*addr): "r"(b));
}
static inline void ctrl_bset(int b, unsigned char *addr)
{
if (__builtin_constant_p(b))
__asm__("bset %1,%0" : "+WU"(*addr): "i"(b));
else
__asm__("bset %w1,%0" : "+WU"(*addr): "r"(b));
}
#endif /* __KERNEL__ */
#endif /* _H8300_IO_H */
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