io.h
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/*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _LINUX_IO_H
#define _LINUX_IO_H
#include <linux/compiler.h>
#include <linux/types.h>
#include <asm/io.h>
static inline u8 ioread8(const volatile void __iomem *addr)
{
return readb(addr);
}
static inline u16 ioread16(const volatile void __iomem *addr)
{
return readw(addr);
}
static inline u32 ioread32(const volatile void __iomem *addr)
{
return readl(addr);
}
#ifdef CONFIG_64BIT
static inline u64 ioread64(const volatile void __iomem *addr)
{
return readq(addr);
}
#endif /* CONFIG_64BIT */
static inline void iowrite8(u8 value, volatile void __iomem *addr)
{
writeb(value, addr);
}
static inline void iowrite16(u16 value, volatile void __iomem *addr)
{
writew(value, addr);
}
static inline void iowrite32(u32 value, volatile void __iomem *addr)
{
writel(value, addr);
}
#ifdef CONFIG_64BIT
static inline void iowrite64(u64 value, volatile void __iomem *addr)
{
writeq(value, addr);
}
#endif /* CONFIG_64BIT */
#ifndef CONFIG_HAVE_ARCH_IOREMAP
static inline void __iomem *ioremap(resource_size_t offset,
resource_size_t size)
{
return (void __iomem *)(unsigned long)offset;
}
static inline void iounmap(void __iomem *addr)
{
}
#define devm_ioremap(dev, offset, size) ioremap(offset, size)
#endif
#endif /* _LINUX_IO_H */