diff options
author | Ingo Molnar <mingo@elte.hu> | 2012-02-28 10:26:07 +0100 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2012-02-28 10:27:36 +0100 |
commit | 458ce2910aa83d8a2cafb489d727f7da839e73c6 (patch) | |
tree | 28e088137eb068e5620f17eaf0ca19d1562006ed /include/asm-generic/io-64-nonatomic-hi-lo.h | |
parent | 69466466ce889cd2cbc8cda9ff1c6083f48cc7f9 (diff) | |
parent | 586c6e7013c8cbb8c91aaa6568ec349b1dc2c691 (diff) |
Merge branch 'linus' into x86/asm
Sync up the latest NMI fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-generic/io-64-nonatomic-hi-lo.h')
-rw-r--r-- | include/asm-generic/io-64-nonatomic-hi-lo.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/asm-generic/io-64-nonatomic-hi-lo.h b/include/asm-generic/io-64-nonatomic-hi-lo.h new file mode 100644 index 000000000000..a6806a94250d --- /dev/null +++ b/include/asm-generic/io-64-nonatomic-hi-lo.h @@ -0,0 +1,28 @@ +#ifndef _ASM_IO_64_NONATOMIC_HI_LO_H_ +#define _ASM_IO_64_NONATOMIC_HI_LO_H_ + +#include <linux/io.h> +#include <asm-generic/int-ll64.h> + +#ifndef readq +static inline __u64 readq(const volatile void __iomem *addr) +{ + const volatile u32 __iomem *p = addr; + u32 low, high; + + high = readl(p + 1); + low = readl(p); + + return low + ((u64)high << 32); +} +#endif + +#ifndef writeq +static inline void writeq(__u64 val, volatile void __iomem *addr) +{ + writel(val >> 32, addr + 4); + writel(val, addr); +} +#endif + +#endif /* _ASM_IO_64_NONATOMIC_HI_LO_H_ */ |