/* $Id: io_generic.c,v 1.12 2000/11/14 16:45:11 sugioka Exp $ * * linux/arch/sh/kernel/io_generic.c * * Copyright (C) 2000  Niibe Yutaka * * Generic I/O routine. These can be used where a machine specific version * is not required. * * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. * */#include <asm/io.h>#include <asm/machvec.h>#include <linux/module.h>#if defined(__sh3__)/* I'm not sure SH7709 has this kind of bug */#define SH3_PCMCIA_BUG_WORKAROUND 1#define DUMMY_READ_AREA6	  0xba000000#endif#define PORT2ADDR(x) (sh_mv.mv_isa_port2addr(x))unsigned long generic_io_base;static inline void delay(void){	ctrl_inw(0xa0000000);}unsigned char generic_inb(unsigned long port){	return *(volatile unsigned char*)PORT2ADDR(port);}unsigned short generic_inw(unsigned long port){	return *(volatile unsigned short*)PORT2ADDR(port);}unsigned int generic_inl(unsigned long port){	return *(volatile unsigned long*)PORT2ADDR(port);}unsigned char generic_inb_p(unsigned long port){	unsigned long v = *(volatile unsigned char*)PORT2ADDR(port);	delay();	return v;}unsigned short generic_inw_p(unsigned long port){	unsigned long v = *(volatile unsigned short*)PORT2ADDR(port);	delay();	return v;}unsigned int generic_inl_p(unsigned long port){	unsigned long v = *(volatile unsigned long*)PORT2ADDR(port);	delay();	return v;}void generic_insb(unsigned long port, void *buffer, unsigned long count){	unsigned char *buf=buffer;	while(count--) *buf++=inb(port);}void generic_insw(unsigned long port, void *buffer, unsigned long count){	unsigned short *buf=buffer;	while(count--) *buf++=inw(port);#ifdef SH3_PCMCIA_BUG_WORKAROUND	ctrl_inb (DUMMY_READ_AREA6);#endif}void generic_insl(unsigned long port, void *buffer, unsigned long count){	unsigned long *buf=buffer;	while(count--) *buf++=inl(port);#ifdef SH3_PCMCIA_BUG_WORKAROUND	ctrl_inb (DUMMY_READ_AREA6);#endif}void generic_outb(unsigned char b, unsigned long port){	*(volatile unsigned char*)PORT2ADDR(port) = b;}void generic_outw(unsigned short b, unsigned long port){	*(volatile unsigned short*)PORT2ADDR(port) = b;}void generic_outl(unsigned int b, unsigned long port){        *(volatile unsigned long*)PORT2ADDR(port) = b;}void generic_outb_p(unsigned char b, unsigned long port){	*(volatile unsigned char*)PORT2ADDR(port) = b;	delay();}void generic_outw_p(unsigned short b, unsigned long port){	*(volatile unsigned short*)PORT2ADDR(port) = b;	delay();}void generic_outl_p(unsigned int b, unsigned long port){	*(volatile unsigned long*)PORT2ADDR(port) = b;	delay();}void generic_outsb(unsigned long port, const void *buffer, unsigned long count){	const unsigned char *buf=buffer;	while(count--) outb(*buf++, port);}void generic_outsw(unsigned long port, const void *buffer, unsigned long count){	const unsigned short *buf=buffer;	while(count--) outw(*buf++, port);#ifdef SH3_PCMCIA_BUG_WORKAROUND	ctrl_inb (DUMMY_READ_AREA6);#endif}void generic_outsl(unsigned long port, const void *buffer, unsigned long count){	const unsigned long *buf=buffer;	while(count--) outl(*buf++, port);#ifdef SH3_PCMCIA_BUG_WORKAROUND	ctrl_inb (DUMMY_READ_AREA6);#endif}unsigned char generic_readb(unsigned long addr){	return *(volatile unsigned char*)addr;}unsigned short generic_readw(unsigned long addr){	return *(volatile unsigned short*)addr;}unsigned int generic_readl(unsigned long addr){	return *(volatile unsigned long*)addr;}void generic_writeb(unsigned char b, unsigned long addr){	*(volatile unsigned char*)addr = b;}void generic_writew(unsigned short b, unsigned long addr){	*(volatile unsigned short*)addr = b;}void generic_writel(unsigned int b, unsigned long addr){        *(volatile unsigned long*)addr = b;}void * generic_ioremap(unsigned long offset, unsigned long size){	return (void *) P2SEGADDR(offset);}EXPORT_SYMBOL(generic_ioremap);void generic_iounmap(void *addr){}EXPORT_SYMBOL(generic_iounmap);unsigned long generic_isa_port2addr(unsigned long offset){	return offset + generic_io_base;}