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 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 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