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575 palkovsky 1
/*
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 * Copyright (c) 2005 Ondrej Palkovsky
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup mips32 
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 * @{
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 */
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/** @file
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 */
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#ifndef KERN_mips32_SERIAL_H_
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#define KERN_mips32_SERIAL_H_
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#include <console/chardev.h>
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#define SERIAL_MAX        4
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#define SERIAL_COM1       0x3f8
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#define SERIAL_COM1_IRQ   4
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#define SERIAL_COM2       0x2f8
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#define SERIAL_COM2_IRQ   3
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#define P_WRITEB(where,what)     (*((volatile char *) (0xB8000000+where))=what)
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#define P_READB(where)           (*((volatile char *)(0xB8000000+where)))
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#define SERIAL_READ(x)           P_READB(x)
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#define SERIAL_WRITE(x,c)        P_WRITEB(x,c)
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/* Interrupt enable register */
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#define SERIAL_READ_IER(x)              (P_READB((x) + 1))
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#define SERIAL_WRITE_IER(x,c)           (P_WRITEB((x)+1,c))
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/* Interrupt identification register */
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#define SERIAL_READ_IIR(x)             (P_READB((x) + 2))
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/* Line status register */
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#define SERIAL_READ_LSR(x)             (P_READB((x) + 5))
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#define TRANSMIT_EMPTY_BIT      5          
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typedef struct {
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    int port;
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    int irq;
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}serial_t;
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extern void serial_console(devno_t devno);
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extern int serial_init(void);
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#endif
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/** @}
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 */