| Hitoshi Mitake | 797a796 | 2012-02-07 11:45:33 +0900 | [diff] [blame] | 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_ */ |