mirror of https://gitee.com/openkylin/linux.git
29 lines
536 B
C
29 lines
536 B
C
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#ifndef _ASM_IO_64_NONATOMIC_HI_LO_H_
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#define _ASM_IO_64_NONATOMIC_HI_LO_H_
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#include <linux/io.h>
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#include <asm-generic/int-ll64.h>
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#ifndef readq
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static inline __u64 readq(const volatile void __iomem *addr)
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{
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const volatile u32 __iomem *p = addr;
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u32 low, high;
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high = readl(p + 1);
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low = readl(p);
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return low + ((u64)high << 32);
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}
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#endif
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#ifndef writeq
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static inline void writeq(__u64 val, volatile void __iomem *addr)
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{
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writel(val >> 32, addr + 4);
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writel(val, addr);
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}
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#endif
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#endif /* _ASM_IO_64_NONATOMIC_HI_LO_H_ */
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