[mirror_ubuntu-bionic-kernel.git] / include / asm-generic / io-64-nonatomic-lo-hi.h

#ifndef _ASM_IO_64_NONATOMIC_LO_HI_H_
#define _ASM_IO_64_NONATOMIC_LO_HI_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;

	low = readl(p);
	high = readl(p + 1);

	return low + ((u64)high << 32);
}
#endif

#ifndef writeq
static inline void writeq(__u64 val, volatile void __iomem *addr)
{
	writel(val, addr);
	writel(val >> 32, addr + 4);
}
#endif

#endif	/* _ASM_IO_64_NONATOMIC_LO_HI_H_ */
Commit	Line	Data
797a796a HM	1	#ifndef _ASM_IO_64_NONATOMIC_LO_HI_H_
	2	#define _ASM_IO_64_NONATOMIC_LO_HI_H_
	3
	4	#include <linux/io.h>
	5	#include <asm-generic/int-ll64.h>
	6
	7	#ifndef readq
	8	static inline __u64 readq(const volatile void __iomem *addr)
	9	{
	10	const volatile u32 __iomem *p = addr;
	11	u32 low, high;
	12
	13	low = readl(p);
	14	high = readl(p + 1);
	15
	16	return low + ((u64)high << 32);
	17	}
	18	#endif
	19
	20	#ifndef writeq
	21	static inline void writeq(__u64 val, volatile void __iomem *addr)
	22	{
	23	writel(val, addr);
	24	writel(val >> 32, addr + 4);
	25	}
	26	#endif
	27
	28	#endif /* _ASM_IO_64_NONATOMIC_LO_HI_H_ */