| 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 | |