| 1 | /* SPDX-License-Identifier: GPL-2.0 */ | 
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| 2 | #ifndef _LINUX_IO_64_NONATOMIC_HI_LO_H_ | 
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| 3 | #define _LINUX_IO_64_NONATOMIC_HI_LO_H_ | 
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| 4 |  | 
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| 5 | #include <linux/io.h> | 
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| 6 | #include <asm-generic/int-ll64.h> | 
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| 7 |  | 
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| 8 | static inline __u64 hi_lo_readq(const volatile void __iomem *addr) | 
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| 9 | { | 
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| 10 | const volatile u32 __iomem *p = addr; | 
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| 11 | u32 low, high; | 
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| 12 |  | 
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| 13 | high = readl(addr: p + 1); | 
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| 14 | low = readl(addr: p); | 
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| 15 |  | 
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| 16 | return low + ((u64)high << 32); | 
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| 17 | } | 
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| 18 |  | 
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| 19 | static inline void hi_lo_writeq(__u64 val, volatile void __iomem *addr) | 
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| 20 | { | 
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| 21 | writel(val: val >> 32, addr: addr + 4); | 
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| 22 | writel(val, addr); | 
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| 23 | } | 
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| 24 |  | 
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| 25 | static inline __u64 hi_lo_readq_relaxed(const volatile void __iomem *addr) | 
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| 26 | { | 
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| 27 | const volatile u32 __iomem *p = addr; | 
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| 28 | u32 low, high; | 
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| 29 |  | 
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| 30 | high = readl_relaxed(p + 1); | 
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| 31 | low = readl_relaxed(p); | 
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| 32 |  | 
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| 33 | return low + ((u64)high << 32); | 
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| 34 | } | 
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| 35 |  | 
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| 36 | static inline void hi_lo_writeq_relaxed(__u64 val, volatile void __iomem *addr) | 
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| 37 | { | 
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| 38 | writel_relaxed(val >> 32, addr + 4); | 
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| 39 | writel_relaxed(val, addr); | 
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| 40 | } | 
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| 41 |  | 
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| 42 | #ifndef readq | 
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| 43 | #define readq hi_lo_readq | 
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| 44 | #endif | 
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| 45 |  | 
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| 46 | #ifndef writeq | 
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| 47 | #define writeq hi_lo_writeq | 
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| 48 | #endif | 
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| 49 |  | 
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| 50 | #ifndef readq_relaxed | 
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| 51 | #define readq_relaxed hi_lo_readq_relaxed | 
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| 52 | #endif | 
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| 53 |  | 
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| 54 | #ifndef writeq_relaxed | 
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| 55 | #define writeq_relaxed hi_lo_writeq_relaxed | 
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| 56 | #endif | 
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| 57 |  | 
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| 58 | #ifndef ioread64_hi_lo | 
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| 59 | #define ioread64_hi_lo ioread64_hi_lo | 
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| 60 | static inline u64 ioread64_hi_lo(const void __iomem *addr) | 
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| 61 | { | 
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| 62 | u32 low, high; | 
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| 63 |  | 
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| 64 | high = ioread32(addr + sizeof(u32)); | 
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| 65 | low = ioread32(addr); | 
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| 66 |  | 
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| 67 | return low + ((u64)high << 32); | 
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| 68 | } | 
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| 69 | #endif | 
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| 70 |  | 
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| 71 | #ifndef iowrite64_hi_lo | 
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| 72 | #define iowrite64_hi_lo iowrite64_hi_lo | 
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| 73 | static inline void iowrite64_hi_lo(u64 val, void __iomem *addr) | 
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| 74 | { | 
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| 75 | iowrite32(val >> 32, addr + sizeof(u32)); | 
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| 76 | iowrite32(val, addr); | 
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| 77 | } | 
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| 78 | #endif | 
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| 79 |  | 
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| 80 | #ifndef ioread64be_hi_lo | 
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| 81 | #define ioread64be_hi_lo ioread64be_hi_lo | 
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| 82 | static inline u64 ioread64be_hi_lo(const void __iomem *addr) | 
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| 83 | { | 
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| 84 | u32 low, high; | 
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| 85 |  | 
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| 86 | high = ioread32be(addr); | 
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| 87 | low = ioread32be(addr + sizeof(u32)); | 
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| 88 |  | 
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| 89 | return low + ((u64)high << 32); | 
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| 90 | } | 
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| 91 | #endif | 
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| 92 |  | 
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| 93 | #ifndef iowrite64be_hi_lo | 
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| 94 | #define iowrite64be_hi_lo iowrite64be_hi_lo | 
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| 95 | static inline void iowrite64be_hi_lo(u64 val, void __iomem *addr) | 
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| 96 | { | 
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| 97 | iowrite32be(val >> 32, addr); | 
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| 98 | iowrite32be(val, addr + sizeof(u32)); | 
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| 99 | } | 
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| 100 | #endif | 
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| 101 |  | 
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| 102 | #ifndef ioread64 | 
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| 103 | #define ioread64_is_nonatomic | 
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| 104 | #if defined(CONFIG_GENERIC_IOMAP) && defined(CONFIG_64BIT) | 
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| 105 | #define ioread64 __ioread64_hi_lo | 
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| 106 | #else | 
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| 107 | #define ioread64 ioread64_hi_lo | 
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| 108 | #endif | 
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| 109 | #endif | 
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| 110 |  | 
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| 111 | #ifndef iowrite64 | 
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| 112 | #define iowrite64_is_nonatomic | 
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| 113 | #if defined(CONFIG_GENERIC_IOMAP) && defined(CONFIG_64BIT) | 
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| 114 | #define iowrite64 __iowrite64_hi_lo | 
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| 115 | #else | 
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| 116 | #define iowrite64 iowrite64_hi_lo | 
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| 117 | #endif | 
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| 118 | #endif | 
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| 119 |  | 
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| 120 | #ifndef ioread64be | 
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| 121 | #define ioread64be_is_nonatomic | 
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| 122 | #if defined(CONFIG_GENERIC_IOMAP) && defined(CONFIG_64BIT) | 
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| 123 | #define ioread64be __ioread64be_hi_lo | 
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| 124 | #else | 
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| 125 | #define ioread64be ioread64be_hi_lo | 
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| 126 | #endif | 
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| 127 | #endif | 
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| 128 |  | 
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| 129 | #ifndef iowrite64be | 
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| 130 | #define iowrite64be_is_nonatomic | 
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| 131 | #if defined(CONFIG_GENERIC_IOMAP) && defined(CONFIG_64BIT) | 
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| 132 | #define iowrite64be __iowrite64be_hi_lo | 
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| 133 | #else | 
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| 134 | #define iowrite64be iowrite64be_hi_lo | 
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| 135 | #endif | 
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| 136 | #endif | 
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| 137 |  | 
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| 138 | #endif	/* _LINUX_IO_64_NONATOMIC_HI_LO_H_ */ | 
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| 139 |  | 
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