arch/h8300/include/asm/io.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _H8300_IO_H
   3 #define _H8300_IO_H
   4
   5 #ifdef __KERNEL__
   6
   7 #include <linux/types.h>
   8
   9 /* H8/300 internal I/O functions */
  10
  11 #define __raw_readb __raw_readb
  12 static inline u8 __raw_readb(const volatile void __iomem *addr)
  13 {
  14         return *(volatile u8 *)addr;
  15 }
  16
  17 #define __raw_readw __raw_readw
  18 static inline u16 __raw_readw(const volatile void __iomem *addr)
  19 {
  20         return *(volatile u16 *)addr;
  21 }
  22
  23 #define __raw_readl __raw_readl
  24 static inline u32  __raw_readl(const volatile void __iomem *addr)
  25 {
  26         return *(volatile u32 *)addr;
  27 }
  28
  29 #define __raw_writeb __raw_writeb
  30 static inline void __raw_writeb(u8 b, const volatile void __iomem *addr)
  31 {
  32         *(volatile u8 *)addr = b;
  33 }
  34
  35 #define __raw_writew __raw_writew
  36 static inline void __raw_writew(u16 b, const volatile void __iomem *addr)
  37 {
  38         *(volatile u16 *)addr = b;
  39 }
  40
  41 #define __raw_writel __raw_writel
  42 static inline void __raw_writel(u32 b, const volatile void __iomem *addr)
  43 {
  44         *(volatile u32 *)addr = b;
  45 }
  46
  47 static inline void ctrl_bclr(int b, void __iomem *addr)
  48 {
  49         if (__builtin_constant_p(b))
  50                 __asm__("bclr %1,%0" : "+WU"(*(u8 *)addr): "i"(b));
  51         else
  52                 __asm__("bclr %w1,%0" : "+WU"(*(u8 *)addr): "r"(b));
  53 }
  54
  55 static inline void ctrl_bset(int b, void __iomem *addr)
  56 {
  57         if (__builtin_constant_p(b))
  58                 __asm__("bset %1,%0" : "+WU"(*(u8 *)addr): "i"(b));
  59         else
  60                 __asm__("bset %w1,%0" : "+WU"(*(u8 *)addr): "r"(b));
  61 }
  62
  63 #include <asm-generic/io.h>
  64
  65 #endif /* __KERNEL__ */
  66
  67 #endif /* _H8300_IO_H */