250 lines
6.2 KiB
C
250 lines
6.2 KiB
C
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/*
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* linux/arch/m32r/kernel/io_usrv.c
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*
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* Typical I/O routines for uServer board.
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*
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* Copyright (c) 2001 - 2003 Hiroyuki Kondo, Hirokazu Takata,
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* Hitoshi Yamamoto, Takeo Takahashi
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file "COPYING" in the main directory of this
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* archive for more details.
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*
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*/
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#include <linux/config.h>
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#include <asm/m32r.h>
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#include <asm/page.h>
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#include <asm/io.h>
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#include <linux/types.h>
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#include "../drivers/m32r_cfc.h"
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extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
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extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
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extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
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extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
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#define CFC_IOSTART CFC_IOPORT_BASE
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#define CFC_IOEND (CFC_IOSTART + (M32R_PCC_MAPSIZE * M32R_MAX_PCC) - 1)
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#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
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#define UART0_REGSTART 0x04c20000
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#define UART1_REGSTART 0x04c20100
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#define UART_IOMAP_SIZE 8
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#define UART0_IOSTART 0x3f8
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#define UART0_IOEND (UART0_IOSTART + UART_IOMAP_SIZE - 1)
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#define UART1_IOSTART 0x2f8
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#define UART1_IOEND (UART1_IOSTART + UART_IOMAP_SIZE - 1)
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#endif /* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */
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#define PORT2ADDR(port) _port2addr(port)
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static __inline__ void *_port2addr(unsigned long port)
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{
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#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
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if (port >= UART0_IOSTART && port <= UART0_IOEND)
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port = ((port - UART0_IOSTART) << 1) + UART0_REGSTART;
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else if (port >= UART1_IOSTART && port <= UART1_IOEND)
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port = ((port - UART1_IOSTART) << 1) + UART1_REGSTART;
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#endif /* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */
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return (void *)(port + NONCACHE_OFFSET);
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}
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static __inline__ void delay(void)
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{
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__asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
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}
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unsigned char _inb(unsigned long port)
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{
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if (port >= CFC_IOSTART && port <= CFC_IOEND) {
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unsigned char b;
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pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
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return b;
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} else
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return *(volatile unsigned char *)PORT2ADDR(port);
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}
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unsigned short _inw(unsigned long port)
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{
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if (port >= CFC_IOSTART && port <= CFC_IOEND) {
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unsigned short w;
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pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
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return w;
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} else
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return *(volatile unsigned short *)PORT2ADDR(port);
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}
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unsigned long _inl(unsigned long port)
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{
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if (port >= CFC_IOSTART && port <= CFC_IOEND) {
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unsigned long l;
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pcc_ioread_word(0, port, &l, sizeof(l), 1, 0);
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return l;
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} else
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return *(volatile unsigned long *)PORT2ADDR(port);
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}
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unsigned char _inb_p(unsigned long port)
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{
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unsigned char b;
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if (port >= CFC_IOSTART && port <= CFC_IOEND) {
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pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
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return b;
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} else {
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b = *(volatile unsigned char *)PORT2ADDR(port);
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delay();
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return b;
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}
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}
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unsigned short _inw_p(unsigned long port)
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{
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unsigned short w;
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if (port >= CFC_IOSTART && port <= CFC_IOEND) {
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pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
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return w;
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} else {
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w = *(volatile unsigned short *)PORT2ADDR(port);
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delay();
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return w;
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}
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}
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unsigned long _inl_p(unsigned long port)
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{
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unsigned long v;
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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 _outb(unsigned char b, unsigned long port)
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{
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if (port >= CFC_IOSTART && port <= CFC_IOEND)
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pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
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else
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*(volatile unsigned char *)PORT2ADDR(port) = b;
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}
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void _outw(unsigned short w, unsigned long port)
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{
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if (port >= CFC_IOSTART && port <= CFC_IOEND)
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pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
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else
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*(volatile unsigned short *)PORT2ADDR(port) = w;
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}
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void _outl(unsigned long l, unsigned long port)
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{
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if (port >= CFC_IOSTART && port <= CFC_IOEND)
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pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0);
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else
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*(volatile unsigned long *)PORT2ADDR(port) = l;
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}
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void _outb_p(unsigned char b, unsigned long port)
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{
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if (port >= CFC_IOSTART && port <= CFC_IOEND)
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pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
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else
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*(volatile unsigned char *)PORT2ADDR(port) = b;
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delay();
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}
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void _outw_p(unsigned short w, unsigned long port)
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{
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if (port >= CFC_IOSTART && port <= CFC_IOEND)
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pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
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else
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*(volatile unsigned short *)PORT2ADDR(port) = w;
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delay();
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}
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void _outl_p(unsigned long l, unsigned long port)
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{
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*(volatile unsigned long *)PORT2ADDR(port) = l;
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delay();
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}
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void _insb(unsigned int port, void * addr, unsigned long count)
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{
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if (port >= CFC_IOSTART && port <= CFC_IOEND)
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pcc_ioread_byte(0, port, addr, sizeof(unsigned char), count, 1);
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else {
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unsigned char *buf = addr;
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unsigned char *portp = PORT2ADDR(port);
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while (count--)
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*buf++ = *(volatile unsigned char *)portp;
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}
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}
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void _insw(unsigned int port, void * addr, unsigned long count)
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{
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unsigned short *buf = addr;
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unsigned short *portp;
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if (port >= CFC_IOSTART && port <= CFC_IOEND)
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pcc_ioread_word(0, port, addr, sizeof(unsigned short), count,
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1);
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else {
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portp = PORT2ADDR(port);
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while (count--)
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*buf++ = *(volatile unsigned short *)portp;
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}
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}
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void _insl(unsigned int port, void * addr, unsigned long count)
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{
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unsigned long *buf = addr;
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unsigned long *portp;
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portp = PORT2ADDR(port);
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while (count--)
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*buf++ = *(volatile unsigned long *)portp;
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}
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void _outsb(unsigned int port, const void * addr, unsigned long count)
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{
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const unsigned char *buf = addr;
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unsigned char *portp;
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if (port >= CFC_IOSTART && port <= CFC_IOEND)
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pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
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count, 1);
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else {
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portp = PORT2ADDR(port);
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while (count--)
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*(volatile unsigned char *)portp = *buf++;
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}
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}
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void _outsw(unsigned int port, const void * addr, unsigned long count)
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{
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const unsigned short *buf = addr;
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unsigned short *portp;
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if (port >= CFC_IOSTART && port <= CFC_IOEND)
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pcc_iowrite_word(0, port, (void *)addr, sizeof(unsigned short),
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count, 1);
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else {
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portp = PORT2ADDR(port);
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while (count--)
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*(volatile unsigned short *)portp = *buf++;
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}
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}
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void _outsl(unsigned int port, const void * addr, unsigned long count)
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{
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const unsigned long *buf = addr;
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unsigned char *portp;
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portp = PORT2ADDR(port);
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while (count--)
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*(volatile unsigned long *)portp = *buf++;
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}
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