sbus.h

来自「this SRC packet is the headfiles that MI」· C头文件 代码 · 共 44 行

/*
 * some sbus structures and macros to make usage of sbus drivers possible
 */

#ifndef __M68K_SBUS_H
#define __M68K_SBUS_H

struct linux_sbus_device {
	struct {
		unsigned int which_io;
		unsigned int phys_addr;
	} reg_addrs[1];
};

extern void *sparc_alloc_io (u32, void *, int, char *, u32, int);
#define sparc_alloc_io(a,b,c,d,e,f)	(a)

#define ARCH_SUN4  0

/* sbus IO functions stolen from include/asm-sparc/io.h for the serial driver */
/* No SBUS on the Sun3, kludge -- sam */

extern inline void _sbus_writeb(unsigned char val, unsigned long addr)
{
	*(volatile unsigned char *)addr = val;
}

extern inline unsigned char _sbus_readb(unsigned long addr)
{
	return *(volatile unsigned char *)addr;
}

extern inline void _sbus_writel(unsigned long val, unsigned long addr)
{
	*(volatile unsigned long *)addr = val;

}

#define sbus_readb(a) _sbus_readb((unsigned long)a)
#define sbus_writeb(v, a) _sbus_writeb(v, (unsigned long)a)
#define sbus_writel(v, a) _sbus_writel(v, (unsigned long)a)

#endif