Commit | Line | Data |
---|---|---|
2f8e2c87 CH |
1 | #ifndef _LINUX_IO_64_NONATOMIC_LO_HI_H_ |
2 | #define _LINUX_IO_64_NONATOMIC_LO_HI_H_ | |
797a796a HM |
3 | |
4 | #include <linux/io.h> | |
5 | #include <asm-generic/int-ll64.h> | |
6 | ||
3a044178 | 7 | static inline __u64 lo_hi_readq(const volatile void __iomem *addr) |
797a796a HM |
8 | { |
9 | const volatile u32 __iomem *p = addr; | |
10 | u32 low, high; | |
11 | ||
12 | low = readl(p); | |
13 | high = readl(p + 1); | |
14 | ||
15 | return low + ((u64)high << 32); | |
16 | } | |
797a796a | 17 | |
3a044178 | 18 | static inline void lo_hi_writeq(__u64 val, volatile void __iomem *addr) |
797a796a HM |
19 | { |
20 | writel(val, addr); | |
21 | writel(val >> 32, addr + 4); | |
22 | } | |
3a044178 | 23 | |
e511267b RM |
24 | static inline __u64 lo_hi_readq_relaxed(const volatile void __iomem *addr) |
25 | { | |
26 | const volatile u32 __iomem *p = addr; | |
27 | u32 low, high; | |
28 | ||
29 | low = readl_relaxed(p); | |
30 | high = readl_relaxed(p + 1); | |
31 | ||
32 | return low + ((u64)high << 32); | |
33 | } | |
34 | ||
35 | static inline void lo_hi_writeq_relaxed(__u64 val, volatile void __iomem *addr) | |
36 | { | |
37 | writel_relaxed(val, addr); | |
38 | writel_relaxed(val >> 32, addr + 4); | |
39 | } | |
40 | ||
3a044178 JB |
41 | #ifndef readq |
42 | #define readq lo_hi_readq | |
43 | #endif | |
44 | ||
45 | #ifndef writeq | |
46 | #define writeq lo_hi_writeq | |
797a796a HM |
47 | #endif |
48 | ||
e511267b RM |
49 | #ifndef readq_relaxed |
50 | #define readq_relaxed lo_hi_readq_relaxed | |
51 | #endif | |
52 | ||
53 | #ifndef writeq_relaxed | |
54 | #define writeq_relaxed lo_hi_writeq_relaxed | |
55 | #endif | |
56 | ||
2f8e2c87 | 57 | #endif /* _LINUX_IO_64_NONATOMIC_LO_HI_H_ */ |