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author | H. Peter Anvin <hpa@zytor.com> | 2008-09-04 19:08:42 +0400 |
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committer | H. Peter Anvin <hpa@zytor.com> | 2008-09-04 19:08:42 +0400 |
commit | 7203781c98ad9147564d327de6f6513ad8fc0f4e (patch) | |
tree | 5c29a2a04a626bf08a0d56fd8a0068b3c92ad284 /arch/alpha/include/asm/io_trivial.h | |
parent | 671eef85a3e885dff4ce210d8774ad50a91d5967 (diff) | |
parent | af2e1f276ff08f17192411ea3b71c13a758dfe12 (diff) | |
download | linux-7203781c98ad9147564d327de6f6513ad8fc0f4e.tar.xz |
Merge branch 'x86/cpu' into x86/core
Conflicts:
arch/x86/kernel/cpu/feature_names.c
include/asm-x86/cpufeature.h
Diffstat (limited to 'arch/alpha/include/asm/io_trivial.h')
-rw-r--r-- | arch/alpha/include/asm/io_trivial.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/io_trivial.h b/arch/alpha/include/asm/io_trivial.h new file mode 100644 index 000000000000..1c77f10b4b36 --- /dev/null +++ b/arch/alpha/include/asm/io_trivial.h @@ -0,0 +1,131 @@ +/* Trivial implementations of basic i/o routines. Assumes that all + of the hard work has been done by ioremap and ioportmap, and that + access to i/o space is linear. */ + +/* This file may be included multiple times. */ + +#if IO_CONCAT(__IO_PREFIX,trivial_io_bw) +__EXTERN_INLINE unsigned int +IO_CONCAT(__IO_PREFIX,ioread8)(void __iomem *a) +{ + return __kernel_ldbu(*(volatile u8 __force *)a); +} + +__EXTERN_INLINE unsigned int +IO_CONCAT(__IO_PREFIX,ioread16)(void __iomem *a) +{ + return __kernel_ldwu(*(volatile u16 __force *)a); +} + +__EXTERN_INLINE void +IO_CONCAT(__IO_PREFIX,iowrite8)(u8 b, void __iomem *a) +{ + __kernel_stb(b, *(volatile u8 __force *)a); +} + +__EXTERN_INLINE void +IO_CONCAT(__IO_PREFIX,iowrite16)(u16 b, void __iomem *a) +{ + __kernel_stw(b, *(volatile u16 __force *)a); +} +#endif + +#if IO_CONCAT(__IO_PREFIX,trivial_io_lq) +__EXTERN_INLINE unsigned int +IO_CONCAT(__IO_PREFIX,ioread32)(void __iomem *a) +{ + return *(volatile u32 __force *)a; +} + +__EXTERN_INLINE void +IO_CONCAT(__IO_PREFIX,iowrite32)(u32 b, void __iomem *a) +{ + *(volatile u32 __force *)a = b; +} +#endif + +#if IO_CONCAT(__IO_PREFIX,trivial_rw_bw) == 1 +__EXTERN_INLINE u8 +IO_CONCAT(__IO_PREFIX,readb)(const volatile void __iomem *a) +{ + return __kernel_ldbu(*(const volatile u8 __force *)a); +} + +__EXTERN_INLINE u16 +IO_CONCAT(__IO_PREFIX,readw)(const volatile void __iomem *a) +{ + return __kernel_ldwu(*(const volatile u16 __force *)a); +} + +__EXTERN_INLINE void +IO_CONCAT(__IO_PREFIX,writeb)(u8 b, volatile void __iomem *a) +{ + __kernel_stb(b, *(volatile u8 __force *)a); +} + +__EXTERN_INLINE void +IO_CONCAT(__IO_PREFIX,writew)(u16 b, volatile void __iomem *a) +{ + __kernel_stw(b, *(volatile u16 __force *)a); +} +#elif IO_CONCAT(__IO_PREFIX,trivial_rw_bw) == 2 +__EXTERN_INLINE u8 +IO_CONCAT(__IO_PREFIX,readb)(const volatile void __iomem *a) +{ + void __iomem *addr = (void __iomem *)a; + return IO_CONCAT(__IO_PREFIX,ioread8)(addr); +} + +__EXTERN_INLINE u16 +IO_CONCAT(__IO_PREFIX,readw)(const volatile void __iomem *a) +{ + void __iomem *addr = (void __iomem *)a; + return IO_CONCAT(__IO_PREFIX,ioread16)(addr); +} + +__EXTERN_INLINE void +IO_CONCAT(__IO_PREFIX,writeb)(u8 b, volatile void __iomem *a) +{ + void __iomem *addr = (void __iomem *)a; + IO_CONCAT(__IO_PREFIX,iowrite8)(b, addr); +} + +__EXTERN_INLINE void +IO_CONCAT(__IO_PREFIX,writew)(u16 b, volatile void __iomem *a) +{ + void __iomem *addr = (void __iomem *)a; + IO_CONCAT(__IO_PREFIX,iowrite16)(b, addr); +} +#endif + +#if IO_CONCAT(__IO_PREFIX,trivial_rw_lq) == 1 +__EXTERN_INLINE u32 +IO_CONCAT(__IO_PREFIX,readl)(const volatile void __iomem *a) +{ + return *(const volatile u32 __force *)a; +} + +__EXTERN_INLINE u64 +IO_CONCAT(__IO_PREFIX,readq)(const volatile void __iomem *a) +{ + return *(const volatile u64 __force *)a; +} + +__EXTERN_INLINE void +IO_CONCAT(__IO_PREFIX,writel)(u32 b, volatile void __iomem *a) +{ + *(volatile u32 __force *)a = b; +} + +__EXTERN_INLINE void +IO_CONCAT(__IO_PREFIX,writeq)(u64 b, volatile void __iomem *a) +{ + *(volatile u64 __force *)a = b; +} +#endif + +#if IO_CONCAT(__IO_PREFIX,trivial_iounmap) +__EXTERN_INLINE void IO_CONCAT(__IO_PREFIX,iounmap)(volatile void __iomem *a) +{ +} +#endif |