/*
* Driver for 8250/16550-type serial ports
*
* Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
*
* Copyright (C) 2001 Russell King.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* A note about mapbase / membase
*
* mapbase is the physical address of the IO port. Currently, we don't
* support this very well, and it may well be dropped from this driver
* in future. As such, mapbase should be NULL.
*
* membase is an 'ioremapped' cookie. This is compatible with the old
* serial.c driver, and is currently the preferred form.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/tty.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/console.h>
#include <linux/sysrq.h>
#include <linux/serial.h>
#include <linux/serialP.h>
#include <linux/delay.h>
#include <asm/serial.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mach-au1x00/au1000.h>
#if defined(CONFIG_SERIAL_AU1X00_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
#endif
#include <linux/serial_core.h>
#include "8250.h"
/*
* Debugging.
*/
#if 0
#define DEBUG_AUTOCONF(fmt...) printk(fmt)
#else
#define DEBUG_AUTOCONF(fmt...) do { } while (0)
#endif
#if 0
#define DEBUG_INTR(fmt...) printk(fmt)
#else
#define DEBUG_INTR(fmt...) do { } while (0)
#endif
#define PASS_LIMIT 256
/*
* We default to IRQ0 for the "no irq" hack. Some
* machine types want others as well - they're free
* to redefine this in their header file.
*/
#define is_real_interrupt(irq) ((irq) != 0)
static struct old_serial_port old_serial_port[] = {
{ .baud_base = 0,
.iomem_base = (u8 *)UART0_ADDR,
.irq = AU1000_UART0_INT,
.flags = STD_COM_FLAGS,
.iomem_reg_shift = 2,
}, {
.baud_base = 0,
.iomem_base = (u8 *)UART1_ADDR,
.irq = AU1000_UART1_INT,
.flags = STD_COM_FLAGS,
.iomem_reg_shift = 2
}, {
.baud_base = 0,
.iomem_base = (u8 *)UART2_ADDR,
.irq = AU1000_UART2_INT,
.flags = STD_COM_FLAGS,
.iomem_reg_shift = 2
}, {
.baud_base = 0,
.iomem_base = (u8 *)UART3_ADDR,
.irq = AU1000_UART3_INT,
.flags = STD_COM_FLAGS,
.iomem_reg_shift = 2
}
};
#define UART_NR ARRAY_SIZE(old_serial_port)
struct uart_8250_port {
struct uart_port port;
struct timer_list timer; /* "no irq" timer */
struct list_head list; /* ports on this IRQ */
unsigned short rev;
unsigned char acr;
unsigned char ier;
unsigned char lcr;
unsigned char mcr_mask; /* mask of user bits */
unsigned char mcr_force; /* mask of forced bits */
unsigned char 