projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 2f8e2c87 CH |
1 | #ifndef _LINUX_IO_64_NONATOMIC_HI_LO_H_ |
| 2 | #define _LINUX_IO_64_NONATOMIC_HI_LO_H_ | |
| 797a796a HM |
3 | |
| 4 | #include <linux/io.h> | |
| 5 | #include <asm-generic/int-ll64.h> | |
| 6 | ||
| 3a044178 | 7 | static inline __u64 hi_lo_readq(const volatile void __iomem *addr) |
| 797a796a HM |
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 | } | |
| 797a796a | 17 | |
| 3a044178 | 18 | static inline void hi_lo_writeq(__u64 val, volatile void __iomem *addr) |
| 797a796a HM |
19 | { |
| 20 | writel(val >> 32, addr + 4); | |
| 21 | writel(val, addr); | |
| 22 | } | |
| 3a044178 | 23 | |
| e511267b RM |
24 | static inline __u64 hi_lo_readq_relaxed(const volatile void __iomem *addr) |
| 25 | { | |
| 26 | const volatile u32 __iomem *p = addr; | |
| 27 | u32 low, high; | |
| 28 | ||
| 29 | high = readl_relaxed(p + 1); | |
| 30 | low = readl_relaxed(p); | |
| 31 | ||
| 32 | return low + ((u64)high << 32); | |
| 33 | } | |
| 34 | ||
| 35 | static inline void hi_lo_writeq_relaxed(__u64 val, volatile void __iomem *addr) | |
| 36 | { | |
| 37 | writel_relaxed(val >> 32, addr + 4); | |
| 38 | writel_relaxed(val, addr); | |
| 39 | } | |
| 40 | ||
| 3a044178 JB |
41 | #ifndef readq |
| 42 | #define readq hi_lo_readq | |
| 43 | #endif | |
| 44 | ||
| 45 | #ifndef writeq | |
| 46 | #define writeq hi_lo_writeq | |
| 797a796a HM |
47 | #endif |
| 48 | ||
| e511267b RM |
49 | #ifndef readq_relaxed |
| 50 | #define readq_relaxed hi_lo_readq_relaxed | |
| 51 | #endif | |
| 52 | ||
| 53 | #ifndef writeq_relaxed | |
| 54 | #define writeq_relaxed hi_lo_writeq_relaxed | |
| 55 | #endif | |
| 56 | ||
| 2f8e2c87 | 57 | #endif /* _LINUX_IO_64_NONATOMIC_HI_LO_H_ */ |