arch/h8300/include/asm/io.h

   1 #ifndef _H8300_IO_H
   2 #define _H8300_IO_H
   3
   4 #ifdef __KERNEL__
   5
   6 #include <linux/types.h>
   7
   8 /* H8/300 internal I/O functions */
   9
  10 #define __raw_readb __raw_readb
  11 static inline u8 __raw_readb(const volatile void __iomem *addr)
  12 {
  13         return *(volatile u8 *)addr;
  14 }
  15
  16 #define __raw_readw __raw_readw
  17 static inline u16 __raw_readw(const volatile void __iomem *addr)
  18 {
  19         return *(volatile u16 *)addr;
  20 }
  21
  22 #define __raw_readl __raw_readl
  23 static inline u32  __raw_readl(const volatile void __iomem *addr)
  24 {
  25         return *(volatile u32 *)addr;
  26 }
  27
  28 #define __raw_writeb __raw_writeb
  29 static inline void __raw_writeb(u8 b, const volatile void __iomem *addr)
  30 {
  31         *(volatile u8 *)addr = b;
  32 }
  33
  34 #define __raw_writew __raw_writew
  35 static inline void __raw_writew(u16 b, const volatile void __iomem *addr)
  36 {
  37         *(volatile u16 *)addr = b;
  38 }
  39
  40 #define __raw_writel __raw_writel
  41 static inline void __raw_writel(u32 b, const volatile void __iomem *addr)
  42 {
  43         *(volatile u32 *)addr = b;
  44 }
  45
  46 static inline void ctrl_bclr(int b, void __iomem *addr)
  47 {
  48         if (__builtin_constant_p(b))
  49                 __asm__("bclr %1,%0" : "+WU"(*(u8 *)addr): "i"(b));
  50         else
  51                 __asm__("bclr %w1,%0" : "+WU"(*(u8 *)addr): "r"(b));
  52 }
  53
  54 static inline void ctrl_bset(int b, void __iomem *addr)
  55 {
  56         if (__builtin_constant_p(b))
  57                 __asm__("bset %1,%0" : "+WU"(*(u8 *)addr): "i"(b));
  58         else
  59                 __asm__("bset %w1,%0" : "+WU"(*(u8 *)addr): "r"(b));
  60 }
  61
  62 #include <asm-generic/io.h>
  63
  64 #endif /* __KERNEL__ */
  65
  66 #endif /* _H8300_IO_H */