include/asm-m68k/sbus.h

   1 /*
   2  * some sbus structures and macros to make usage of sbus drivers possible
   3  */
   4
   5 #ifndef __M68K_SBUS_H
   6 #define __M68K_SBUS_H
   7
   8 struct sbus_dev {
   9         struct {
  10                 unsigned int which_io;
  11                 unsigned int phys_addr;
  12         } reg_addrs[1];
  13 };
  14
  15 extern void *sparc_alloc_io (u32, void *, int, char *, u32, int);
  16 #define sparc_alloc_io(a,b,c,d,e,f)     (a)
  17
  18 #define ARCH_SUN4  0
  19
  20 /* sbus IO functions stolen from include/asm-sparc/io.h for the serial driver */
  21 /* No SBUS on the Sun3, kludge -- sam */
  22
  23 static inline void _sbus_writeb(unsigned char val, unsigned long addr)
  24 {
  25         *(volatile unsigned char *)addr = val;
  26 }
  27
  28 static inline unsigned char _sbus_readb(unsigned long addr)
  29 {
  30         return *(volatile unsigned char *)addr;
  31 }
  32
  33 static inline void _sbus_writel(unsigned long val, unsigned long addr)
  34 {
  35         *(volatile unsigned long *)addr = val;
  36
  37 }
  38
  39 extern inline unsigned long _sbus_readl(unsigned long addr)
  40 {
  41         return *(volatile unsigned long *)addr;
  42 }
  43
  44
  45 #define sbus_readb(a) _sbus_readb((unsigned long)a)
  46 #define sbus_writeb(v, a) _sbus_writeb(v, (unsigned long)a)
  47 #define sbus_readl(a) _sbus_readl((unsigned long)a)
  48 #define sbus_writel(v, a) _sbus_writel(v, (unsigned long)a)
  49
  50 #endif