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/* $Id: io.c,v 1.5 2004/02/22 23:08:43 kkojima Exp $
*
* linux/arch/sh/boards/se/7206/io.c
*
* Copyright (C) 2006 Yoshinori Sato
*
* I/O routine for Hitachi 7206 SolutionEngine.
*
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <asm/io.h>
#include <mach-se/mach/se7206.h>
static inline void delay(void)
{
__raw_readw(0x20000000); /* P2 ROM Area */
}
/* MS7750 requires special versions of in*, out* routines, since
PC-like io ports are located at upper half byte of 16-bit word which
can be accessed only with 16-bit wide. */
static inline volatile __u16 *
port2adr(unsigned int port)
{
if (port >= 0x2000 && port < 0x2020)
return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
else if (port >= 0x300 && port < 0x310)
return (volatile __u16 *) (PA_SMSC + (port - 0x300));
return (volatile __u16 *)port;
}
unsigned char se7206_inb(unsigned long port)
{
return (*port2adr(port)) & 0xff;
}
unsigned char se7206_inb_p(unsigned long port)
{
unsigned long v;
v = (*port2adr(port)) & 0xff;
delay();
return v;
}
unsigned short se7206_inw(unsigned long port)
{
return *port2adr(port);
}
void se7206_outb(unsigned char value, unsigned long port)
{
*(port2adr(port)) = value;
}
void se7206_outb_p(unsigned char value, unsigned long port)
{
*(port2adr(port)) = value;
delay();
}
void se7206_outw(unsigned short value, unsigned long port)
{
*port2adr(port) = value;
}
void se7206_insb(unsigned long port, void *addr, unsigned long count)
{
volatile __u16 *p = port2adr(port);
__u8 *ap = addr;
while (count--)
*ap++ = *p;
}
void se7206_insw(unsigned long port, void *addr, unsigned long count)
{
volatile __u16 *p = port2adr(port);
__u16 *ap = addr;
while (count--)
*ap++ = *p;
}
void se7206_outsb(unsigned long port, const void *addr, unsigned long count)
{
volatile __u16 *p = port2adr(port);
const __u8 *ap = addr;
while (count--)
*p = *ap++;
}
void se7206_outsw(unsigned long port, const void *addr, unsigned long count)
{
volatile __u16 *p = port2adr(port);
const __u16 *ap = addr;
while (count--)
*p = *ap++;
}
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