1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _TOOLS_ASM_X86_IO_H 3 #define _TOOLS_ASM_X86_IO_H 4 5 #include <linux/compiler.h> 6 #include <linux/types.h> 7 8 #define build_mmio_read(name, size, type, reg, barrier) \ 9 static inline type name(const volatile void __iomem *addr) \ 10 { type ret; asm volatile("mov" size " %1,%0":reg (ret) \ 11 :"m" (*(volatile type __force *)addr) barrier); return ret; } 12 13 #define build_mmio_write(name, size, type, reg, barrier) \ 14 static inline void name(type val, volatile void __iomem *addr) \ 15 { asm volatile("mov" size " %0,%1": :reg (val), \ 16 "m" (*(volatile type __force *)addr) barrier); } 17 18 build_mmio_read(readb, "b", unsigned char, "=q", :"memory") 19 build_mmio_read(readw, "w", unsigned short, "=r", :"memory") 20 build_mmio_read(readl, "l", unsigned int, "=r", :"memory") 21 22 build_mmio_read(__readb, "b", unsigned char, "=q", ) 23 build_mmio_read(__readw, "w", unsigned short, "=r", ) 24 build_mmio_read(__readl, "l", unsigned int, "=r", ) 25 26 build_mmio_write(writeb, "b", unsigned char, "q", :"memory") 27 build_mmio_write(writew, "w", unsigned short, "r", :"memory") 28 build_mmio_write(writel, "l", unsigned int, "r", :"memory") 29 30 build_mmio_write(__writeb, "b", unsigned char, "q", ) 31 build_mmio_write(__writew, "w", unsigned short, "r", ) 32 build_mmio_write(__writel, "l", unsigned int, "r", ) 33 34 #define readb readb 35 #define readw readw 36 #define readl readl 37 #define readb_relaxed(a) __readb(a) 38 #define readw_relaxed(a) __readw(a) 39 #define readl_relaxed(a) __readl(a) 40 #define __raw_readb __readb 41 #define __raw_readw __readw 42 #define __raw_readl __readl 43 44 #define writeb writeb 45 #define writew writew 46 #define writel writel 47 #define writeb_relaxed(v, a) __writeb(v, a) 48 #define writew_relaxed(v, a) __writew(v, a) 49 #define writel_relaxed(v, a) __writel(v, a) 50 #define __raw_writeb __writeb 51 #define __raw_writew __writew 52 #define __raw_writel __writel 53 54 #ifdef __x86_64__ 55 56 build_mmio_read(readq, "q", u64, "=r", :"memory") 57 build_mmio_read(__readq, "q", u64, "=r", ) 58 build_mmio_write(writeq, "q", u64, "r", :"memory") 59 build_mmio_write(__writeq, "q", u64, "r", ) 60 61 #define readq_relaxed(a) __readq(a) 62 #define writeq_relaxed(v, a) __writeq(v, a) 63 64 #define __raw_readq __readq 65 #define __raw_writeq __writeq 66 67 /* Let people know that we have them */ 68 #define readq readq 69 #define writeq writeq 70 71 #endif /* __x86_64__ */ 72 73 #include <asm-generic/io.h> 74 75 #endif /* _TOOLS_ASM_X86_IO_H */ 76