1  /* SPDX-License-Identifier: GPL-2.0 */
2  #ifndef _ASM_X86_SHARED_IO_H
3  #define _ASM_X86_SHARED_IO_H
4  
5  #include <linux/types.h>
6  
7  #define BUILDIO(bwl, bw, type)						\
8  static __always_inline void __out##bwl(type value, u16 port)		\
9  {									\
10  	asm volatile("out" #bwl " %" #bw "0, %w1"			\
11  		     : : "a"(value), "Nd"(port));			\
12  }									\
13  									\
14  static __always_inline type __in##bwl(u16 port)				\
15  {									\
16  	type value;							\
17  	asm volatile("in" #bwl " %w1, %" #bw "0"			\
18  		     : "=a"(value) : "Nd"(port));			\
19  	return value;							\
20  }
21  
22  BUILDIO(b, b, u8)
23  BUILDIO(w, w, u16)
24  BUILDIO(l,  , u32)
25  #undef BUILDIO
26  
27  #define inb __inb
28  #define inw __inw
29  #define inl __inl
30  #define outb __outb
31  #define outw __outw
32  #define outl __outl
33  
34  #endif
35