projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2f8e2c87 CH |
2 | #ifndef _LINUX_IO_64_NONATOMIC_HI_LO_H_ |
| 3 | #define _LINUX_IO_64_NONATOMIC_HI_LO_H_ | |
| 797a796a HM |
4 | |
| 5 | #include <linux/io.h> | |
| 6 | #include <asm-generic/int-ll64.h> | |
| 7 | ||
| 3a044178 | 8 | static inline __u64 hi_lo_readq(const volatile void __iomem *addr) |
| 797a796a HM |
9 | { |
| 10 | const volatile u32 __iomem *p = addr; | |
| 11 | u32 low, high; | |
| 12 | ||
| 13 | high = readl(p + 1); | |
| 14 | low = readl(p); | |
| 15 | ||
| 16 | return low + ((u64)high << 32); | |
| 17 | } | |
| 797a796a | 18 | |
| 3a044178 | 19 | static inline void hi_lo_writeq(__u64 val, volatile void __iomem *addr) |
| 797a796a HM |
20 | { |
| 21 | writel(val >> 32, addr + 4); | |
| 22 | writel(val, addr); | |
| 23 | } | |
| 3a044178 | 24 | |
| e511267b RM |
25 | static inline __u64 hi_lo_readq_relaxed(const volatile void __iomem *addr) |
| 26 | { | |
| 27 | const volatile u32 __iomem *p = addr; | |
| 28 | u32 low, high; | |
| 29 | ||
| 30 | high = readl_relaxed(p + 1); | |
| 31 | low = readl_relaxed(p); | |
| 32 | ||
| 33 | return low + ((u64)high << 32); | |
| 34 | } | |
| 35 | ||
| 36 | static inline void hi_lo_writeq_relaxed(__u64 val, volatile void __iomem *addr) | |
| 37 | { | |
| 38 | writel_relaxed(val >> 32, addr + 4); | |
| 39 | writel_relaxed(val, addr); | |
| 40 | } | |
| 41 | ||
| 3a044178 JB |
42 | #ifndef readq |
| 43 | #define readq hi_lo_readq | |
| 44 | #endif | |
| 45 | ||
| 46 | #ifndef writeq | |
| 47 | #define writeq hi_lo_writeq | |
| 797a796a HM |
48 | #endif |
| 49 | ||
| e511267b RM |
50 | #ifndef readq_relaxed |
| 51 | #define readq_relaxed hi_lo_readq_relaxed | |
| 52 | #endif | |
| 53 | ||
| 54 | #ifndef writeq_relaxed | |
| 55 | #define writeq_relaxed hi_lo_writeq_relaxed | |
| 56 | #endif | |
| 57 | ||
| c81d64d3 LG |
58 | #ifndef ioread64_hi_lo |
| 59 | #define ioread64_hi_lo ioread64_hi_lo | |
| 8f28ca6b | 60 | static inline u64 ioread64_hi_lo(const void __iomem *addr) |
| c81d64d3 LG |
61 | { |
| 62 | u32 low, high; | |
| 63 | ||
| 64 | high = ioread32(addr + sizeof(u32)); | |
| 65 | low = ioread32(addr); | |
| 66 | ||
| 67 | return low + ((u64)high << 32); | |
| 68 | } | |
| 69 | #endif | |
| 70 | ||
| 71 | #ifndef iowrite64_hi_lo | |
| 72 | #define iowrite64_hi_lo iowrite64_hi_lo | |
| 73 | static inline void iowrite64_hi_lo(u64 val, void __iomem *addr) | |
| 74 | { | |
| 75 | iowrite32(val >> 32, addr + sizeof(u32)); | |
| 76 | iowrite32(val, addr); | |
| 77 | } | |
| 78 | #endif | |
| 79 | ||
| 80 | #ifndef ioread64be_hi_lo | |
| 81 | #define ioread64be_hi_lo ioread64be_hi_lo | |
| 8f28ca6b | 82 | static inline u64 ioread64be_hi_lo(const void __iomem *addr) |
| c81d64d3 LG |
83 | { |
| 84 | u32 low, high; | |
| 85 | ||
| 86 | high = ioread32be(addr); | |
| 87 | low = ioread32be(addr + sizeof(u32)); | |
| 88 | ||
| 89 | return low + ((u64)high << 32); | |
| 90 | } | |
| 91 | #endif | |
| 92 | ||
| 93 | #ifndef iowrite64be_hi_lo | |
| 94 | #define iowrite64be_hi_lo iowrite64be_hi_lo | |
| 95 | static inline void iowrite64be_hi_lo(u64 val, void __iomem *addr) | |
| 96 | { | |
| 97 | iowrite32be(val >> 32, addr); | |
| 98 | iowrite32be(val, addr + sizeof(u32)); | |
| 99 | } | |
| 100 | #endif | |
| 101 | ||
| 102 | #ifndef ioread64 | |
| 103 | #define ioread64_is_nonatomic | |
| 104 | #define ioread64 ioread64_hi_lo | |
| 105 | #endif | |
| 106 | ||
| 107 | #ifndef iowrite64 | |
| 108 | #define iowrite64_is_nonatomic | |
| 109 | #define iowrite64 iowrite64_hi_lo | |
| 110 | #endif | |
| 111 | ||
| 112 | #ifndef ioread64be | |
| 113 | #define ioread64be_is_nonatomic | |
| 114 | #define ioread64be ioread64be_hi_lo | |
| 115 | #endif | |
| 116 | ||
| 117 | #ifndef iowrite64be | |
| 118 | #define iowrite64be_is_nonatomic | |
| 119 | #define iowrite64be iowrite64be_hi_lo | |
| 120 | #endif | |
| 121 | ||
| 2f8e2c87 | 122 | #endif /* _LINUX_IO_64_NONATOMIC_HI_LO_H_ */ |