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 "" \
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
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