LXR uboot/include/linux/io.h

   1/*
   2 * SPDX-License-Identifier:     GPL-2.0+
   3 */
   4
   5#ifndef _LINUX_IO_H
   6#define _LINUX_IO_H
   7
   8#include <linux/compiler.h>
   9#include <linux/types.h>
  10#include <asm/io.h>
  11
  12static inline u8 ioread8(const volatile void __iomem *addr)
  13{
  14        return readb(addr);
  15}
  16
  17static inline u16 ioread16(const volatile void __iomem *addr)
  18{
  19        return readw(addr);
  20}
  21
  22static inline u32 ioread32(const volatile void __iomem *addr)
  23{
  24        return readl(addr);
  25}
  26
  27#ifdef CONFIG_64BIT
  28static inline u64 ioread64(const volatile void __iomem *addr)
  29{
  30        return readq(addr);
  31}
  32#endif /* CONFIG_64BIT */
  33
  34static inline void iowrite8(u8 value, volatile void __iomem *addr)
  35{
  36        writeb(value, addr);
  37}
  38
  39static inline void iowrite16(u16 value, volatile void __iomem *addr)
  40{
  41        writew(value, addr);
  42}
  43
  44static inline void iowrite32(u32 value, volatile void __iomem *addr)
  45{
  46        writel(value, addr);
  47}
  48
  49#ifdef CONFIG_64BIT
  50static inline void iowrite64(u64 value, volatile void __iomem *addr)
  51{
  52        writeq(value, addr);
  53}
  54#endif /* CONFIG_64BIT */
  55
  56#ifndef CONFIG_HAVE_ARCH_IOREMAP
  57static inline void __iomem *ioremap(resource_size_t offset,
  58                                    resource_size_t size)
  59{
  60        return (void __iomem *)(unsigned long)offset;
  61}
  62
  63static inline void iounmap(void __iomem *addr)
  64{
  65}
  66
  67#define devm_ioremap(dev, offset, size)         ioremap(offset, size)
  68#endif
  69
  70#endif /* _LINUX_IO_H */
  71