/*  * Copyright (C) 2000 David J. Mckay (david.mckay@st.com) * * May be copied or modified under the terms of the GNU General Public * License.  See linux/COPYING for more information.                             * * This file contains the I/O routines for use on the overdrive board * */#include <linux/config.h>#include <linux/types.h>#include <linux/delay.h>#include <asm/processor.h>#include <asm/io.h>#include <asm/addrspace.h>#include <asm/overdrive/overdrive.h>/* * readX/writeX() are used to access memory mapped devices. On some * architectures the memory mapped IO stuff needs to be accessed * differently. On the SuperH architecture, we just read/write the * memory location directly. */#define dprintk(x...)/* Translates an IO address to where it is mapped in memory */#define io_addr(x) (((unsigned)(x))|PCI_GTIO_BASE)unsigned char od_inb(unsigned long port){dprintk("od_inb(%x)\n", port);	return readb(io_addr(port)) & 0xff;}unsigned short od_inw(unsigned long port){dprintk("od_inw(%x)\n", port);	return readw(io_addr(port)) & 0xffff;}unsigned int od_inl(unsigned long port){dprintk("od_inl(%x)\n", port);	return readl(io_addr(port));}void od_outb(unsigned char value, unsigned long port){dprintk("od_outb(%x, %x)\n", value, port);	writeb(value, io_addr(port));}void od_outw(unsigned short value, unsigned long port){dprintk("od_outw(%x, %x)\n", value, port);	writew(value, io_addr(port));}void od_outl(unsigned int value, unsigned long port){dprintk("od_outl(%x, %x)\n", value, port);	writel(value, io_addr(port));}/* This is horrible at the moment - needs more work to do something sensible */#define IO_DELAY() udelay(10)#define OUT_DELAY(x,type) \void od_out##x##_p(unsigned type value,unsigned long port){out##x(value,port);IO_DELAY();}#define IN_DELAY(x,type) \unsigned type od_in##x##_p(unsigned long port) {unsigned type tmp=in##x(port);IO_DELAY();return tmp;}OUT_DELAY(b,char)OUT_DELAY(w,short)OUT_DELAY(l,int)IN_DELAY(b,char)IN_DELAY(w,short)IN_DELAY(l,int)/*  Now for the string version of these functions */void od_outsb(unsigned long port, const void *addr, unsigned long count){	int i;	unsigned char *p = (unsigned char *) addr;	for (i = 0; i < count; i++, p++) {		outb(*p, port);	}}void od_insb(unsigned long port, void *addr, unsigned long count){	int i;	unsigned char *p = (unsigned char *) addr;	for (i = 0; i < count; i++, p++) {		*p = inb(port);	}}/* For the 16 and 32 bit string functions, we have to worry about alignment. * The SH does not do unaligned accesses, so we have to read as bytes and * then write as a word or dword.  * This can be optimised a lot more, especially in the case where the data * is aligned */void od_outsw(unsigned long port, const void *addr, unsigned long count){	int i;	unsigned short tmp;	unsigned char *p = (unsigned char *) addr;	for (i = 0; i < count; i++, p += 2) {		tmp = (*p) | ((*(p + 1)) << 8);		outw(tmp, port);	}}void od_insw(unsigned long port, void *addr, unsigned long count){	int i;	unsigned short tmp;	unsigned char *p = (unsigned char *) addr;	for (i = 0; i < count; i++, p += 2) {		tmp = inw(port);		p[0] = tmp & 0xff;		p[1] = (tmp >> 8) & 0xff;	}}void od_outsl(unsigned long port, const void *addr, unsigned long count){	int i;	unsigned tmp;	unsigned char *p = (unsigned char *) addr;	for (i = 0; i < count; i++, p += 4) {		tmp = (*p) | ((*(p + 1)) << 8) | ((*(p + 2)) << 16) |		      ((*(p + 3)) << 24);		outl(tmp, port);	}}void od_insl(unsigned long port, void *addr, unsigned long count){	int i;	unsigned tmp;	unsigned char *p = (unsigned char *) addr;	for (i = 0; i < count; i++, p += 4) {		tmp = inl(port);		p[0] = tmp & 0xff;		p[1] = (tmp >> 8) & 0xff;		p[2] = (tmp >> 16) & 0xff;		p[3] = (tmp >> 24) & 0xff;	}}