Subversion Repositories HelenOS-historic

Rev

Rev 590 | Rev 607 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
575 palkovsky 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
#include <interrupt.h>
30
#include <console/chardev.h>
31
#include <arch/drivers/msim.h>
32
#include <arch/cp0.h>
606 palkovsky 33
#include <console/console.h>
575 palkovsky 34
 
35
static chardev_t console;
36
 
37
static void msim_write(chardev_t *dev, const char ch);
38
static void msim_enable(chardev_t *dev);
39
static void msim_disable(chardev_t *dev);
40
 
41
static chardev_operations_t msim_ops = {
42
	.resume = msim_enable,
43
	.suspend = msim_disable,
44
	.write = msim_write
45
};
46
 
47
/** Putchar that works with MSIM & gxemul */
48
void msim_write(chardev_t *dev, const char ch)
49
{
50
	*((char *) MSIM_VIDEORAM) = ch;
51
}
52
 
53
/* Called from getc(). */
54
void msim_enable(chardev_t *dev)
55
{
56
	cp0_unmask_int(MSIM_KBD_IRQ);
57
}
58
 
59
/* Called from getc(). */
60
void msim_disable(chardev_t *dev)
61
{
62
	cp0_mask_int(MSIM_KBD_IRQ);
63
}
64
 
588 palkovsky 65
#include <print.h>
575 palkovsky 66
/** Process keyboard interrupt. */
67
static void msim_interrupt(int n, void *stack)
68
{
69
	char ch;
70
 
71
	ch = *((char *) MSIM_KBD_ADDRESS);
72
	if (ch =='\r')
73
		ch = '\n';
588 palkovsky 74
	if (ch == 0x7f)
75
		ch = '\b';
575 palkovsky 76
	chardev_push_character(&console, ch);
77
}
78
 
79
 
80
/* Return console object representing msim console */
606 palkovsky 81
void msim_console(void)
575 palkovsky 82
{
83
	chardev_initialize("msim_console", &console, &msim_ops);
84
 
590 palkovsky 85
	int_register(MSIM_KBD_IRQ, "msim_kbd", msim_interrupt);
575 palkovsky 86
 
87
	cp0_unmask_int(MSIM_KBD_IRQ);
88
 
606 palkovsky 89
	stdin = &console;
90
	stdout = &console;
575 palkovsky 91
}