mirror of https://gitee.com/openkylin/linux.git
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2021 Intel Corporation
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* Author: johannes@sipsolutions.net
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*/
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#ifndef _LOGIC_IO_H
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#define _LOGIC_IO_H
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#include <linux/types.h>
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/* include this file into asm/io.h */
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#ifdef CONFIG_INDIRECT_IOMEM
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#ifdef CONFIG_INDIRECT_IOMEM_FALLBACK
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/*
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* If you want emulated IO memory to fall back to 'normal' IO memory
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* if a region wasn't registered as emulated, then you need to have
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* all of the real_* functions implemented.
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*/
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#if !defined(real_ioremap) || !defined(real_iounmap) || \
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!defined(real_raw_readb) || !defined(real_raw_writeb) || \
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!defined(real_raw_readw) || !defined(real_raw_writew) || \
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!defined(real_raw_readl) || !defined(real_raw_writel) || \
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(defined(CONFIG_64BIT) && \
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(!defined(real_raw_readq) || !defined(real_raw_writeq))) || \
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!defined(real_memset_io) || \
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!defined(real_memcpy_fromio) || \
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!defined(real_memcpy_toio)
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#error "Must provide fallbacks for real IO memory access"
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#endif /* defined ... */
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#endif /* CONFIG_INDIRECT_IOMEM_FALLBACK */
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#define ioremap ioremap
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void __iomem *ioremap(phys_addr_t offset, size_t size);
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#define iounmap iounmap
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void iounmap(void __iomem *addr);
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#define __raw_readb __raw_readb
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u8 __raw_readb(const volatile void __iomem *addr);
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#define __raw_readw __raw_readw
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u16 __raw_readw(const volatile void __iomem *addr);
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#define __raw_readl __raw_readl
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u32 __raw_readl(const volatile void __iomem *addr);
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#ifdef CONFIG_64BIT
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#define __raw_readq __raw_readq
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u64 __raw_readq(const volatile void __iomem *addr);
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#endif /* CONFIG_64BIT */
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#define __raw_writeb __raw_writeb
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void __raw_writeb(u8 value, volatile void __iomem *addr);
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#define __raw_writew __raw_writew
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void __raw_writew(u16 value, volatile void __iomem *addr);
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#define __raw_writel __raw_writel
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void __raw_writel(u32 value, volatile void __iomem *addr);
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#ifdef CONFIG_64BIT
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#define __raw_writeq __raw_writeq
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void __raw_writeq(u64 value, volatile void __iomem *addr);
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#endif /* CONFIG_64BIT */
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#define memset_io memset_io
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void memset_io(volatile void __iomem *addr, int value, size_t size);
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#define memcpy_fromio memcpy_fromio
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void memcpy_fromio(void *buffer, const volatile void __iomem *addr,
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size_t size);
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#define memcpy_toio memcpy_toio
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void memcpy_toio(volatile void __iomem *addr, const void *buffer, size_t size);
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#endif /* CONFIG_INDIRECT_IOMEM */
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#endif /* _LOGIC_IO_H */
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