00001 /* 00002 * Copyright (C) 2005 Ondrej Palkovsky 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 00009 * - Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * - Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * - The name of the author may not be used to endorse or promote products 00015 * derived from this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 00018 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00019 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 00020 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 00021 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 00022 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00023 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00024 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00025 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 00026 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00027 */ 00028 00035 #ifndef __DRV_SERIAL_H__ 00036 #define __DRV_SERIAL_H__ 00037 00038 #include <console/chardev.h> 00039 00040 #define SERIAL_MAX 4 00041 #define SERIAL_COM1 0x3f8 00042 #define SERIAL_COM1_IRQ 4 00043 #define SERIAL_COM2 0x2f8 00044 #define SERIAL_COM2_IRQ 3 00045 00046 #define P_WRITEB(where,what) (*((volatile char *) (0xB8000000+where))=what) 00047 #define P_READB(where) (*((volatile char *)(0xB8000000+where))) 00048 00049 #define SERIAL_READ(x) P_READB(x) 00050 #define SERIAL_WRITE(x,c) P_WRITEB(x,c) 00051 /* Interrupt enable register */ 00052 #define SERIAL_READ_IER(x) (P_READB((x) + 1)) 00053 #define SERIAL_WRITE_IER(x,c) (P_WRITEB((x)+1,c)) 00054 /* Interrupt identification register */ 00055 #define SERIAL_READ_IIR(x) (P_READB((x) + 2)) 00056 /* Line status register */ 00057 #define SERIAL_READ_LSR(x) (P_READB((x) + 5)) 00058 #define TRANSMIT_EMPTY_BIT 5 00059 00060 typedef struct { 00061 int port; 00062 int irq; 00063 }serial_t; 00064 00065 void serial_console(void); 00066 int serial_init(void); 00067 00068 #endif 00069