| 1 | /*
|
|---|
| 2 | * Copyright (c) 2005 Ondrej Palkovsky
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup mips32
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /** @file
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #ifndef KERN_mips32_SERIAL_H_
|
|---|
| 36 | #define KERN_mips32_SERIAL_H_
|
|---|
| 37 |
|
|---|
| 38 | #include <console/chardev.h>
|
|---|
| 39 |
|
|---|
| 40 | #define SERIAL_ADDRESS 0x98000000
|
|---|
| 41 |
|
|---|
| 42 | #define SERIAL_MAX 4
|
|---|
| 43 | #define SERIAL_COM1 0x3f8
|
|---|
| 44 | #define SERIAL_COM1_IRQ 4
|
|---|
| 45 | #define SERIAL_COM2 0x2f8
|
|---|
| 46 | #define SERIAL_COM2_IRQ 3
|
|---|
| 47 |
|
|---|
| 48 | #define P_WRITEB(where, what) (*((volatile char *) (SERIAL_ADDRESS + where)) = what)
|
|---|
| 49 | #define P_READB(where) (*((volatile char *) (SERIAL_ADDRESS + where)))
|
|---|
| 50 |
|
|---|
| 51 | #define SERIAL_READ(x) P_READB(x)
|
|---|
| 52 | #define SERIAL_WRITE(x, c) P_WRITEB(x, c)
|
|---|
| 53 |
|
|---|
| 54 | /* Interrupt enable register */
|
|---|
| 55 | #define SERIAL_READ_IER(x) (P_READB((x) + 1))
|
|---|
| 56 | #define SERIAL_WRITE_IER(x,c) (P_WRITEB((x) + 1, c))
|
|---|
| 57 |
|
|---|
| 58 | /* Interrupt identification register */
|
|---|
| 59 | #define SERIAL_READ_IIR(x) (P_READB((x) + 2))
|
|---|
| 60 |
|
|---|
| 61 | /* Line status register */
|
|---|
| 62 | #define SERIAL_READ_LSR(x) (P_READB((x) + 5))
|
|---|
| 63 | #define TRANSMIT_EMPTY_BIT 5
|
|---|
| 64 |
|
|---|
| 65 | typedef struct {
|
|---|
| 66 | int port;
|
|---|
| 67 | int irq;
|
|---|
| 68 | }serial_t;
|
|---|
| 69 |
|
|---|
| 70 | extern void serial_console(devno_t devno);
|
|---|
| 71 | extern int serial_init(void);
|
|---|
| 72 |
|
|---|
| 73 | #endif
|
|---|
| 74 |
|
|---|
| 75 | /** @}
|
|---|
| 76 | */
|
|---|
