| /* 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 */ |