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#ifndef _ASM_X86_IO_H
#define _ASM_X86_IO_H
#ifdef SLOW_IO_BY_JUMPING
#define native_io_delay() __asm__ __volatile__("jmp 1f\n1:\tjmp 1f\n1:")
#else
#define native_io_delay() __asm__ __volatile__("outb %al,$0x80")
#endif
static inline void slow_down_io(void)
{
native_io_delay();
#ifdef REALLY_SLOW_IO
native_io_delay();
native_io_delay();
native_io_delay();
#endif
}
static inline void __outb(char value, int port) {
asm volatile("outb" " %b" "0, %w1"
: : "a"(value), "Nd"(port));
}
static inline unsigned char __inb(int port)
{
unsigned char value;
asm volatile("inb" " %w1, %b" "0"
: "=a"(value) : "Nd"(port));
return value;
}
static inline void __outw(short value, int port) {
asm volatile("outw" " %w" "0, %w1"
: : "a"(value), "Nd"(port));
}
static inline unsigned short __inw(int port)
{
unsigned short value;
asm volatile("inw" " %w1, %w" "0"
: "=a"(value) : "Nd"(port));
return value;
}
static inline void __outl(int value, int port) {
asm volatile("outl" " %" "0, %w1"
: : "a"(value), "Nd"(port));
}
static inline unsigned int __inl(int port)
{
unsigned int value;
asm volatile("inl" " %w1, %" "0"
: "=a"(value) : "Nd"(port));
return value;
}
#define outb __outb
#define outw __outw
#define outl __outl
#define inb __inb
#define inw __inw
#define inl __inl
#endif /* _ASM_X86_IO_H */
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