Subversion Repositories HelenOS-historic

Rev

Rev 1498 | Rev 1534 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1493 palkovsky 1
/*
2
 * Copyright (C) 2006 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 <align.h>
30
#include <async.h>
31
#include <ipc/ipc.h>
32
#include <errno.h>
33
#include <stdio.h>
34
#include <ddi.h>
35
#include <sysinfo.h>
36
#include <as.h>
37
#include <ipc/fb.h>
38
#include <ipc/ipc.h>
39
#include <ipc/ns.h>
40
#include <ipc/services.h>
41
 
42
#include "ega.h"
43
 
44
/* Allow only 1 connection */
45
static int client_connected = 0;
46
 
47
static unsigned int scr_width;
48
static unsigned int scr_height;
49
static char *scr_addr;
50
 
51
static void clrscr(void)
52
{
53
    int i;
54
 
55
    for (i=0; i < scr_width*scr_height; i++)
56
        scr_addr[i*2] = ' ';
57
}
58
 
59
static void printchar(char c, unsigned int row, unsigned int col)
60
{
61
    scr_addr[(row*scr_width + col)*2] = c;
62
}
63
 
64
static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
65
{
66
    int retval;
67
    ipc_callid_t callid;
68
    ipc_call_t call;
69
    char c;
70
    unsigned int row, col;
71
 
72
    if (client_connected) {
73
        ipc_answer_fast(iid, ELIMIT, 0,0);
74
        return;
75
    }
76
    client_connected = 1;
77
    ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
78
 
79
    while (1) {
80
        callid = async_get_call(&call);
81
        switch (IPC_GET_METHOD(call)) {
82
        case IPC_M_PHONE_HUNGUP:
83
            client_connected = 0;
84
            ipc_answer_fast(callid,0,0,0);
85
            return; /* Exit thread */
86
        case FB_GET_CSIZE:
87
            ipc_answer_fast(callid, 0, scr_width, scr_height);
88
            continue;
89
        case FB_CLEAR:
90
            clrscr();
91
            retval = 0;
92
            break;
93
        case FB_PUTCHAR:
94
            c = IPC_GET_ARG1(call);
95
            row = IPC_GET_ARG2(call);
96
            col = IPC_GET_ARG3(call);
97
            if (row >= scr_width || col >= scr_height) {
98
                retval = EINVAL;
99
                break;
100
            }
101
            printchar(c,row,col);
102
            retval = 0;
103
            break;
104
        default:
105
            retval = ENOENT;
106
        }
107
        ipc_answer_fast(callid,retval,0,0);
108
    }
109
}
110
 
111
int ega_init(void)
112
{
113
    void *ega_ph_addr;
1501 palkovsky 114
    size_t sz;
1493 palkovsky 115
 
116
 
117
    ega_ph_addr=(void *)sysinfo_value("fb.address.physical");
118
    scr_width=sysinfo_value("fb.width");
119
    scr_height=sysinfo_value("fb.height");
120
 
1501 palkovsky 121
    sz = scr_width*scr_height*2;
122
    scr_addr = as_get_mappable_page(sz);
1493 palkovsky 123
 
1501 palkovsky 124
    map_physmem(ega_ph_addr, scr_addr, ALIGN_UP(sz,PAGE_SIZE)>>PAGE_WIDTH,
1493 palkovsky 125
            AS_AREA_READ | AS_AREA_WRITE);
126
 
127
    async_set_client_connection(ega_client_connection);
128
 
129
    clrscr();
130
 
131
    return 0;
132
}