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122 lines
2.4 KiB
122 lines
2.4 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_IO_64_NONATOMIC_HI_LO_H_ |
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#define _LINUX_IO_64_NONATOMIC_HI_LO_H_ |
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#include <linux/io.h> |
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#include <asm-generic/int-ll64.h> |
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static inline __u64 hi_lo_readq(const volatile void __iomem *addr) |
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{ |
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const volatile u32 __iomem *p = addr; |
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u32 low, high; |
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high = readl(p + 1); |
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low = readl(p); |
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return low + ((u64)high << 32); |
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} |
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static inline void hi_lo_writeq(__u64 val, volatile void __iomem *addr) |
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{ |
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writel(val >> 32, addr + 4); |
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writel(val, addr); |
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} |
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static inline __u64 hi_lo_readq_relaxed(const volatile void __iomem *addr) |
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{ |
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const volatile u32 __iomem *p = addr; |
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u32 low, high; |
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high = readl_relaxed(p + 1); |
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low = readl_relaxed(p); |
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return low + ((u64)high << 32); |
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} |
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static inline void hi_lo_writeq_relaxed(__u64 val, volatile void __iomem *addr) |
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{ |
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writel_relaxed(val >> 32, addr + 4); |
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writel_relaxed(val, addr); |
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} |
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#ifndef readq |
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#define readq hi_lo_readq |
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#endif |
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#ifndef writeq |
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#define writeq hi_lo_writeq |
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#endif |
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#ifndef readq_relaxed |
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#define readq_relaxed hi_lo_readq_relaxed |
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#endif |
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#ifndef writeq_relaxed |
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#define writeq_relaxed hi_lo_writeq_relaxed |
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#endif |
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#ifndef ioread64_hi_lo |
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#define ioread64_hi_lo ioread64_hi_lo |
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static inline u64 ioread64_hi_lo(const void __iomem *addr) |
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{ |
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u32 low, high; |
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high = ioread32(addr + sizeof(u32)); |
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low = ioread32(addr); |
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return low + ((u64)high << 32); |
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} |
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#endif |
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#ifndef iowrite64_hi_lo |
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#define iowrite64_hi_lo iowrite64_hi_lo |
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static inline void iowrite64_hi_lo(u64 val, void __iomem *addr) |
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{ |
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iowrite32(val >> 32, addr + sizeof(u32)); |
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iowrite32(val, addr); |
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} |
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#endif |
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#ifndef ioread64be_hi_lo |
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#define ioread64be_hi_lo ioread64be_hi_lo |
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static inline u64 ioread64be_hi_lo(const void __iomem *addr) |
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{ |
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u32 low, high; |
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high = ioread32be(addr); |
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low = ioread32be(addr + sizeof(u32)); |
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return low + ((u64)high << 32); |
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} |
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#endif |
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#ifndef iowrite64be_hi_lo |
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#define iowrite64be_hi_lo iowrite64be_hi_lo |
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static inline void iowrite64be_hi_lo(u64 val, void __iomem *addr) |
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{ |
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iowrite32be(val >> 32, addr); |
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iowrite32be(val, addr + sizeof(u32)); |
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} |
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#endif |
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#ifndef ioread64 |
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#define ioread64_is_nonatomic |
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#define ioread64 ioread64_hi_lo |
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#endif |
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#ifndef iowrite64 |
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#define iowrite64_is_nonatomic |
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#define iowrite64 iowrite64_hi_lo |
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#endif |
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#ifndef ioread64be |
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#define ioread64be_is_nonatomic |
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#define ioread64be ioread64be_hi_lo |
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#endif |
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#ifndef iowrite64be |
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#define iowrite64be_is_nonatomic |
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#define iowrite64be iowrite64be_hi_lo |
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#endif |
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#endif /* _LINUX_IO_64_NONATOMIC_HI_LO_H_ */
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