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/*
* linux/arch/m32r/kernel/io_usrv.c
*
* Typical I/O routines for uServer board.
*
* Copyright (c) 2001-2005 Hiroyuki Kondo, Hirokazu Takata,
* Hitoshi Yamamoto, Takeo Takahashi
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file "COPYING" in the main directory of this
* archive for more details.
*
*/
#include <asm/m32r.h>
#include <asm/page.h>
#include <asm/io.h>
#include <linux/types.h>
#include "../drivers/m32r_cfc.h"
extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
#define CFC_IOSTART CFC_IOPORT_BASE
#define CFC_IOEND (CFC_IOSTART + (M32R_PCC_MAPSIZE * M32R_MAX_PCC) - 1)
#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
#define UART0_REGSTART 0x04c20000
#define UART1_REGSTART 0x04c20100
#define UART_IOMAP_SIZE 8
#define UART0_IOSTART 0x3f8
#define UART0_IOEND (UART0_IOSTART + UART_IOMAP_SIZE - 1)
#define UART1_IOSTART 0x2f8
#define UART1_IOEND (UART1_IOSTART + UART_IOMAP_SIZE - 1)
#endif /* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */
#define PORT2ADDR(port) _port2addr(port)
static inline void *_port2addr(unsigned long port)
{
#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
if (port >= UART0_IOSTART && port <= UART0_IOEND)
port = ((port - UART0_IOSTART) << 1) + UART0_REGSTART;
else if (port >= UART1_IOSTART && port <= UART1_IOEND)
port = ((port - UART1_IOSTART) << 1) + UART1_REGSTART;
#endif /* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */
return (void *)(port | (NONCACHE_OFFSET));
}
static inline void delay(void)
{
__asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
}
unsigned char _inb(unsigned long port)
{
if (port >= CFC_IOSTART && port <= CFC_IOEND) {
unsigned char b;
pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
return b;
} else
return *(volatile unsigned char *)PORT2ADDR(port);
}
unsigned short _inw(unsigned long port)
{
if (port >= CFC_IOSTART && port <= CFC_IOEND) {
unsigned short w;
pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
return w;
} else
return *(volatile unsigned short *)PORT2ADDR(port);
}
unsigned long _inl(unsigned long port)
{
if (port >= CFC_IOSTART && port <= CFC_IOEND) {
unsigned long l;
pcc_ioread_word(0, port, &l, sizeof(l), 1, 0);
return l;
} else
return *(volatile unsigned long *)PORT2ADDR(port);
}
unsigned char _inb_p(unsigned long port)
{
unsigned char v = _inb(port);
delay();
return v;
}
unsigned short _inw_p(unsigned long port)
{
unsigned short v = _inw(port);
delay();
return v;
}
unsigned long _inl_p(unsigned long port)
{
unsigned long v = _inl(port);
delay();
return v;
}
void _outb(unsigned char b, unsigned long port)
{
if (port >= CFC_IOSTART && port <= CFC_IOEND)
pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
else
*(volatile unsigned char *)PORT2ADDR(port) = b;
}
void _outw(unsigned short w, unsigned long port)
{
if (port >= CFC_IOSTART && port <= CFC_IOEND)
pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
else
*(volatile unsigned short *)PORT2ADDR(port) = w;
}
void _outl(unsigned long l, unsigned long port)
{
if (port >= CFC_IOSTART && port <= CFC_IOEND)
pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0);
else
*(volatile unsigned long *)PORT2ADDR(port) = l;
}
void _outb_p(unsigned char b, unsigned long port)
{
_outb(b, port);
delay();
}
void _outw_p(unsigned short w, unsigned long port)
{
_outw(w, port);
delay();
}
void _outl_p(unsigned long l, unsigned long port)
{
_outl(l, port);
delay();
}
void _insb(unsigned int port, void * addr, unsigned long count)
{
if (port >= CFC_IOSTART && port <= CFC_IOEND)
pcc_ioread_byte(0, port, addr, sizeof(unsigned char), count, 1);
else {
unsigned char *buf = addr;
unsigned char *portp = PORT2ADDR(port);
while (count--)
*buf++ = *(volatile unsigned char *)portp;
}
}
void _insw(unsigned int port, void * addr, unsigned long count)
{
unsigned short *buf = addr;
unsigned short *portp;
if (port >= CFC_IOSTART && port <= CFC_IOEND)
pcc_ioread_word(0, port, addr, sizeof(unsigned short), count,
1);
else {
portp = PORT2ADDR(port);
while (count--)
*buf++ = *(volatile unsigned short *)portp;
}
}
void _insl(unsigned int port, void * addr, unsigned long count)
{
unsigned long *buf = addr;
unsigned long *portp;
portp = PORT2ADDR(port);
while (count--)
*buf++ = *(volatile unsigned long *)portp;
}
void _outsb(unsigned int port, const void * addr, unsigned long count)
{
const unsigned char *buf = addr;
unsigned char *portp;
if (port >= CFC_IOSTART && port <= CFC_IOEND)
pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
count, 1);
else {
portp = PORT2ADDR(port);
while (count--)
*(volatile unsigned char *)portp = *buf++;
}
}
void _outsw(unsigned int port, const void * addr, unsigned long count)
{
const unsigned short *buf = addr;
unsigned short *portp;
if (port >= CFC_IOSTART && port <= CFC_IOEND)
pcc_iowrite_word(0, port, (void *)addr, sizeof(unsigned short),
count, 1);
else {
portp = PORT2ADDR(port);
while (count--)
*(volatile unsigned short *)portp = *buf++;
}
}
void _outsl(unsigned int port, const void * addr, unsigned long count)
{
const unsigned long *buf = addr;
unsigned char *portp;
portp = PORT2ADDR(port);
while (count--)
*(volatile unsigned long *)portp = *buf++;
}
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