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/* $Id: io.c,v 1.7 2006/02/05 21:55:29 lethal Exp $
*
* linux/arch/sh/kernel/io_se.c
*
* Copyright (C) 2000 Kazumoto Kojima
*
* I/O routine for Hitachi SolutionEngine.
*
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <asm/io.h>
#include <asm/se.h>
/* SH pcmcia io window base, start and end. */
int sh_pcic_io_wbase = 0xb8400000;
int sh_pcic_io_start;
int sh_pcic_io_stop;
int sh_pcic_io_type;
int sh_pcic_io_dummy;
/* 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 & 0xff000000)
return ( volatile __u16 *) port;
if (port >= 0x2000)
return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
else if (port >= 0x1000)
return (volatile __u16 *) (PA_83902 + (port << 1));
else if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop)
return (volatile __u16 *) (sh_pcic_io_wbase + (port &~ 1));
else
return (volatile __u16 *) (PA_SUPERIO + (port << 1));
}
static inline int
shifted_port(unsigned long port)
{
/* For IDE registers, value is not shifted */
if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6)
return 0;
else
return 1;
}
unsigned char se_inb(unsigned long port)
{
if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop)
return *(__u8 *) (sh_pcic_io_wbase + 0x40000 + port);
else if (shifted_port(port))
return (*port2adr(port) >> 8);
else
return (*port2adr(port))&0xff;
}
unsigned char se_inb_p(unsigned long port)
{
unsigned long v;
if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop)
v = *(__u8 *) (sh_pcic_io_wbase + 0x40000 + port);
else if (shifted_port(port))
v = (*port2adr(port) >> 8);
else
v = (*port2adr(port))&0xff;
ctrl_delay();
return v;
}
unsigned short se_inw(unsigned long port)
{
if (port >= 0x2000 ||
(sh_pcic_io_start <= port && port <= sh_pcic_io_stop))
return *port2adr(port);
else
maybebadio(port);
return 0;
}
unsigned int se_inl(unsigned long port)
{
maybebadio(port);
return 0;
}
void se_outb(unsigned char value, unsigned long port)
{
if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop)
*(__u8 *)(sh_pcic_io_wbase + port) = value;
else if (shifted_port(port))
*(port2adr(port)) = value << 8;
else
*(port2adr(port)) = value;
}
void se_outb_p(unsigned char value, unsigned long port)
{
if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop)
*(__u8 *)(sh_pcic_io_wbase + port) = value;
else if (shifted_port(port))
*(port2adr(port)) = value << 8;
else
*(port2adr(port)) = value;
ctrl_delay();
}
void se_outw(unsigned short value, unsigned long port)
{
if (port >= 0x2000 ||
(sh_pcic_io_start <= port && port <= sh_pcic_io_stop))
*port2adr(port) = value;
else
maybebadio(port);
}
void se_outl(unsigned int value, unsigned long port)
{
maybebadio(port);
}
void se_insb(unsigned long port, void *addr, unsigned long count)
{
volatile __u16 *p = port2adr(port);
__u8 *ap = addr;
if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop) {
volatile __u8 *bp = (__u8 *) (sh_pcic_io_wbase + 0x40000 + port);
while (count--)
*ap++ = *bp;
} else if (shifted_port(port)) {
while (count--)
*ap++ = *p >> 8;
} else {
while (count--)
*ap++ = *p;
}
}
void se_insw(unsigned long port, void *addr, unsigned long count)
{
volatile __u16 *p = port2adr(port);
__u16 *ap = addr;
while (count--)
*ap++ = *p;
}
void se_insl(unsigned long port, void *addr, unsigned long count)
{
maybebadio(port);
}
void se_outsb(unsigned long port, const void *addr, unsigned long count)
{
volatile __u16 *p = port2adr(port);
const __u8 *ap = addr;
if (sh_pcic_io_start <= port && port <= sh_pcic_io_stop) {
volatile __u8 *bp = (__u8 *) (sh_pcic_io_wbase + port);
while (count--)
*bp = *ap++;
} else if (shifted_port(port)) {
while (count--)
*p = *ap++ << 8;
} else {
while (count--)
*p = *ap++;
}
}
void se_outsw(unsigned long port, const void *addr, unsigned long count)
{
volatile __u16 *p = port2adr(port);
const __u16 *ap = addr;
while (count--)
*p = *ap++;
}
void se_outsl(unsigned long port, const void *addr, unsigned long count)
{
maybebadio(port);
}
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