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 | |