Import the x86-specific overrides for <asm-generic/io.h> from the kernel headers into tools/include/.
Changes made when importing: - Replace CONFIG_X86_64 with __x86_64__.
Acked-by: Shuah Khan skhan@linuxfoundation.org Signed-off-by: David Matlack dmatlack@google.com --- tools/arch/x86/include/asm/io.h | 75 +++++++++++++++++++++++++++++++++ tools/include/asm/io.h | 4 ++ 2 files changed, 79 insertions(+) create mode 100644 tools/arch/x86/include/asm/io.h
diff --git a/tools/arch/x86/include/asm/io.h b/tools/arch/x86/include/asm/io.h new file mode 100644 index 000000000000..4c787a2363de --- /dev/null +++ b/tools/arch/x86/include/asm/io.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _TOOLS_ASM_X86_IO_H +#define _TOOLS_ASM_X86_IO_H + +#include <linux/compiler.h> +#include <linux/types.h> + +#define build_mmio_read(name, size, type, reg, barrier) \ +static inline type name(const volatile void __iomem *addr) \ +{ type ret; asm volatile("mov" size " %1,%0":reg (ret) \ +:"m" (*(volatile type __force *)addr) barrier); return ret; } + +#define build_mmio_write(name, size, type, reg, barrier) \ +static inline void name(type val, volatile void __iomem *addr) \ +{ asm volatile("mov" size " %0,%1": :reg (val), \ +"m" (*(volatile type __force *)addr) barrier); } + +build_mmio_read(readb, "b", unsigned char, "=q", :"memory") +build_mmio_read(readw, "w", unsigned short, "=r", :"memory") +build_mmio_read(readl, "l", unsigned int, "=r", :"memory") + +build_mmio_read(__readb, "b", unsigned char, "=q", ) +build_mmio_read(__readw, "w", unsigned short, "=r", ) +build_mmio_read(__readl, "l", unsigned int, "=r", ) + +build_mmio_write(writeb, "b", unsigned char, "q", :"memory") +build_mmio_write(writew, "w", unsigned short, "r", :"memory") +build_mmio_write(writel, "l", unsigned int, "r", :"memory") + +build_mmio_write(__writeb, "b", unsigned char, "q", ) +build_mmio_write(__writew, "w", unsigned short, "r", ) +build_mmio_write(__writel, "l", unsigned int, "r", ) + +#define readb readb +#define readw readw +#define readl readl +#define readb_relaxed(a) __readb(a) +#define readw_relaxed(a) __readw(a) +#define readl_relaxed(a) __readl(a) +#define __raw_readb __readb +#define __raw_readw __readw +#define __raw_readl __readl + +#define writeb writeb +#define writew writew +#define writel writel +#define writeb_relaxed(v, a) __writeb(v, a) +#define writew_relaxed(v, a) __writew(v, a) +#define writel_relaxed(v, a) __writel(v, a) +#define __raw_writeb __writeb +#define __raw_writew __writew +#define __raw_writel __writel + +#ifdef __x86_64__ + +build_mmio_read(readq, "q", u64, "=r", :"memory") +build_mmio_read(__readq, "q", u64, "=r", ) +build_mmio_write(writeq, "q", u64, "r", :"memory") +build_mmio_write(__writeq, "q", u64, "r", ) + +#define readq_relaxed(a) __readq(a) +#define writeq_relaxed(v, a) __writeq(v, a) + +#define __raw_readq __readq +#define __raw_writeq __writeq + +/* Let people know that we have them */ +#define readq readq +#define writeq writeq + +#endif /* __x86_64__ */ + +#include <asm-generic/io.h> + +#endif /* _TOOLS_ASM_X86_IO_H */ diff --git a/tools/include/asm/io.h b/tools/include/asm/io.h index 9ae219b12604..eed5066f25c4 100644 --- a/tools/include/asm/io.h +++ b/tools/include/asm/io.h @@ -2,6 +2,10 @@ #ifndef _TOOLS_ASM_IO_H #define _TOOLS_ASM_IO_H
+#if defined(__i386__) || defined(__x86_64__) +#include "../../arch/x86/include/asm/io.h" +#else #include <asm-generic/io.h> +#endif
#endif /* _TOOLS_ASM_IO_H */