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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [sh/] [kernel/] [io_generic.c] - Blame information for rev 1765

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1 1275 phoenix 
/* $Id: io_generic.c,v 1.1.1.1 2004-04-15 01:17:26 phoenix Exp $
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 *
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 * linux/arch/sh/kernel/io_generic.c
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 *
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 * Copyright (C) 2000  Niibe Yutaka
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 *
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 * Generic I/O routine. These can be used where a machine specific version
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 * is not required.
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 *
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 * This file is subject to the terms and conditions of the GNU General Public
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 * License.  See the file "COPYING" in the main directory of this archive
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 * for more details.
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 *
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 */
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#include <asm/io.h>
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#include <asm/machvec.h>
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#include <linux/module.h>
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#if defined(__sh3__)
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/* I'm not sure SH7709 has this kind of bug */
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#define SH3_PCMCIA_BUG_WORKAROUND 1
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#define DUMMY_READ_AREA6          0xba000000
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#endif
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#define PORT2ADDR(x) (sh_mv.mv_isa_port2addr(x))
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unsigned long generic_io_base;
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static inline void delay(void)
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{
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        ctrl_inw(0xa0000000);
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}
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unsigned char generic_inb(unsigned long port)
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{
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        return *(volatile unsigned char*)PORT2ADDR(port);
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}
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unsigned short generic_inw(unsigned long port)
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{
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        return *(volatile unsigned short*)PORT2ADDR(port);
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}
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unsigned int generic_inl(unsigned long port)
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{
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        return *(volatile unsigned long*)PORT2ADDR(port);
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}
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unsigned char generic_inb_p(unsigned long port)
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{
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        unsigned long v = *(volatile unsigned char*)PORT2ADDR(port);
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        delay();
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        return v;
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}
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unsigned short generic_inw_p(unsigned long port)
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{
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        unsigned long v = *(volatile unsigned short*)PORT2ADDR(port);
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        delay();
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        return v;
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}
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unsigned int generic_inl_p(unsigned long port)
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{
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        unsigned long v = *(volatile unsigned long*)PORT2ADDR(port);
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        delay();
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        return v;
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}
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void generic_insb(unsigned long port, void *buffer, unsigned long count)
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{
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        unsigned char *buf=buffer;
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        while(count--) *buf++=inb(port);
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}
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void generic_insw(unsigned long port, void *buffer, unsigned long count)
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{
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        unsigned short *buf=buffer;
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        while(count--) *buf++=inw(port);
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#ifdef SH3_PCMCIA_BUG_WORKAROUND
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        ctrl_inb (DUMMY_READ_AREA6);
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#endif
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}
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void generic_insl(unsigned long port, void *buffer, unsigned long count)
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{
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        unsigned long *buf=buffer;
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        while(count--) *buf++=inl(port);
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#ifdef SH3_PCMCIA_BUG_WORKAROUND
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        ctrl_inb (DUMMY_READ_AREA6);
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#endif
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}
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void generic_outb(unsigned char b, unsigned long port)
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{
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        *(volatile unsigned char*)PORT2ADDR(port) = b;
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}
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void generic_outw(unsigned short b, unsigned long port)
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{
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        *(volatile unsigned short*)PORT2ADDR(port) = b;
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}
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void generic_outl(unsigned int b, unsigned long port)
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{
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        *(volatile unsigned long*)PORT2ADDR(port) = b;
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}
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void generic_outb_p(unsigned char b, unsigned long port)
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{
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        *(volatile unsigned char*)PORT2ADDR(port) = b;
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        delay();
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}
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void generic_outw_p(unsigned short b, unsigned long port)
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{
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        *(volatile unsigned short*)PORT2ADDR(port) = b;
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        delay();
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}
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void generic_outl_p(unsigned int b, unsigned long port)
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{
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        *(volatile unsigned long*)PORT2ADDR(port) = b;
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        delay();
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}
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void generic_outsb(unsigned long port, const void *buffer, unsigned long count)
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{
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        const unsigned char *buf=buffer;
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        while(count--) outb(*buf++, port);
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}
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void generic_outsw(unsigned long port, const void *buffer, unsigned long count)
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{
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        const unsigned short *buf=buffer;
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        while(count--) outw(*buf++, port);
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#ifdef SH3_PCMCIA_BUG_WORKAROUND
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        ctrl_inb (DUMMY_READ_AREA6);
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#endif
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}
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void generic_outsl(unsigned long port, const void *buffer, unsigned long count)
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{
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        const unsigned long *buf=buffer;
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        while(count--) outl(*buf++, port);
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#ifdef SH3_PCMCIA_BUG_WORKAROUND
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        ctrl_inb (DUMMY_READ_AREA6);
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#endif
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}
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unsigned char generic_readb(unsigned long addr)
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{
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        return *(volatile unsigned char*)addr;
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}
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unsigned short generic_readw(unsigned long addr)
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{
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        return *(volatile unsigned short*)addr;
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}
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unsigned int generic_readl(unsigned long addr)
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{
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        return *(volatile unsigned long*)addr;
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}
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void generic_writeb(unsigned char b, unsigned long addr)
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{
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        *(volatile unsigned char*)addr = b;
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}
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void generic_writew(unsigned short b, unsigned long addr)
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{
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        *(volatile unsigned short*)addr = b;
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}
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void generic_writel(unsigned int b, unsigned long addr)
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{
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        *(volatile unsigned long*)addr = b;
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}
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void * generic_ioremap(unsigned long offset, unsigned long size)
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{
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        return (void *) P2SEGADDR(offset);
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}
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EXPORT_SYMBOL(generic_ioremap);
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void generic_iounmap(void *addr)
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{
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}
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EXPORT_SYMBOL(generic_iounmap);
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unsigned long generic_isa_port2addr(unsigned long offset)
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{
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        return offset + generic_io_base;
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}

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