105 lines
2.0 KiB
C
105 lines
2.0 KiB
C
/* $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 <asm/se7206.h>
|
|
|
|
|
|
static inline void delay(void)
|
|
{
|
|
ctrl_inw(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++;
|
|
}
|