1 #ifndef _LINUX_IO_64_NONATOMIC_HI_LO_H_
2 #define _LINUX_IO_64_NONATOMIC_HI_LO_H_
3 
4 #include <linux/io.h>
5 #include <asm-generic/int-ll64.h>
6 
hi_lo_readq(const volatile void __iomem * addr)7 static inline __u64 hi_lo_readq(const volatile void __iomem *addr)
8 {
9 	const volatile u32 __iomem *p = addr;
10 	u32 low, high;
11 
12 	high = readl(p + 1);
13 	low = readl(p);
14 
15 	return low + ((u64)high << 32);
16 }
17 
hi_lo_writeq(__u64 val,volatile void __iomem * addr)18 static inline void hi_lo_writeq(__u64 val, volatile void __iomem *addr)
19 {
20 	writel(val >> 32, addr + 4);
21 	writel(val, addr);
22 }
23 
24 #ifndef readq
25 #define readq hi_lo_readq
26 #endif
27 
28 #ifndef writeq
29 #define writeq hi_lo_writeq
30 #endif
31 
32 #endif	/* _LINUX_IO_64_NONATOMIC_HI_LO_H_ */
33