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1493 palkovsky 1
/*
2071 jermar 2
 * Copyright (c) 2006 Ondrej Palkovsky
1493 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
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 * are met:
8
 *
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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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 *
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
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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
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
 */
1649 cejka 28
 
29
/** @defgroup egafb EGA framebuffer
30
 * @brief   HelenOS EGA framebuffer.
31
 * @ingroup fbs
32
 * @{
33
 */
34
/** @file
35
 */
36
 
1562 vana 37
#include <stdlib.h>
38
#include <unistd.h>
1493 palkovsky 39
#include <align.h>
40
#include <async.h>
41
#include <ipc/ipc.h>
42
#include <errno.h>
43
#include <stdio.h>
44
#include <ddi.h>
45
#include <sysinfo.h>
46
#include <as.h>
47
#include <ipc/fb.h>
48
#include <ipc/ipc.h>
49
#include <ipc/ns.h>
50
#include <ipc/services.h>
1694 palkovsky 51
#include <libarch/ddi.h>
1493 palkovsky 52
 
53
#include "ega.h"
1534 palkovsky 54
#include "../console/screenbuffer.h"
55
#include "main.h"
1493 palkovsky 56
 
1562 vana 57
#define MAX_SAVED_SCREENS 256
58
typedef struct saved_screen {
59
    short *data;
60
} saved_screen;
1551 vana 61
 
1562 vana 62
saved_screen saved_screens[MAX_SAVED_SCREENS];
63
 
1551 vana 64
#define EGA_IO_ADDRESS 0x3d4
65
#define EGA_IO_SIZE 2
66
 
1640 palkovsky 67
#define NORMAL_COLOR       0x0f
68
#define INVERTED_COLOR     0xf0
69
 
70
#define EGA_STYLE(fg,bg) ((fg) > (bg) ? NORMAL_COLOR : INVERTED_COLOR)
71
 
1493 palkovsky 72
/* Allow only 1 connection */
73
static int client_connected = 0;
74
 
75
static unsigned int scr_width;
76
static unsigned int scr_height;
77
static char *scr_addr;
78
 
1640 palkovsky 79
static unsigned int style = NORMAL_COLOR;
1534 palkovsky 80
 
1493 palkovsky 81
static void clrscr(void)
82
{
83
    int i;
84
 
2025 jermar 85
    for (i = 0; i < scr_width*scr_height; i++) {
86
        scr_addr[i * 2] = ' ';
87
        scr_addr[i * 2 + 1] = style;
1534 palkovsky 88
    }
1493 palkovsky 89
}
90
 
1562 vana 91
static void cursor_goto(unsigned int row, unsigned int col)
1551 vana 92
{
93
    int ega_cursor;
94
 
2025 jermar 95
    ega_cursor = col + scr_width * row;
1551 vana 96
 
2025 jermar 97
    outb(EGA_IO_ADDRESS, 0xe);
98
    outb(EGA_IO_ADDRESS + 1, (ega_cursor >> 8) & 0xff);
99
    outb(EGA_IO_ADDRESS, 0xf);
1551 vana 100
    outb(EGA_IO_ADDRESS + 1, ega_cursor & 0xff);
101
}
102
 
1562 vana 103
static void cursor_disable(void)
1551 vana 104
{
1694 palkovsky 105
    uint8_t stat;
106
 
2025 jermar 107
    outb(EGA_IO_ADDRESS, 0xa);
1551 vana 108
    stat=inb(EGA_IO_ADDRESS + 1);
2025 jermar 109
    outb(EGA_IO_ADDRESS, 0xa);
110
    outb(EGA_IO_ADDRESS + 1, stat | (1 << 5));
1551 vana 111
}
112
 
1562 vana 113
static void cursor_enable(void)
1551 vana 114
{
1694 palkovsky 115
    uint8_t stat;
116
 
2025 jermar 117
    outb(EGA_IO_ADDRESS, 0xa);
1551 vana 118
    stat=inb(EGA_IO_ADDRESS + 1);
2025 jermar 119
    outb(EGA_IO_ADDRESS, 0xa);
120
    outb(EGA_IO_ADDRESS + 1, stat & (~(1 << 5)));
1551 vana 121
}
122
 
1562 vana 123
static void scroll(int rows)
124
{
125
    int i;
126
    if (rows > 0) {
2025 jermar 127
        memcpy(scr_addr, ((char *) scr_addr) + rows * scr_width * 2,
2015 jermar 128
            scr_width * scr_height * 2 - rows * scr_width * 2);
2025 jermar 129
        for (i = 0; i < rows * scr_width; i++)
130
            (((short *) scr_addr) + scr_width * scr_height - rows *
131
                scr_width)[i] = ((style << 8) + ' ');
1562 vana 132
    } else if (rows < 0) {
2025 jermar 133
        memcpy(((char *)scr_addr) - rows * scr_width * 2, scr_addr,
2015 jermar 134
            scr_width * scr_height * 2 + rows * scr_width * 2);
2025 jermar 135
        for (i = 0; i < -rows * scr_width; i++)
136
            ((short *)scr_addr)[i] = ((style << 8 ) + ' ');
1562 vana 137
    }
138
}
139
 
1493 palkovsky 140
static void printchar(char c, unsigned int row, unsigned int col)
141
{
2025 jermar 142
    scr_addr[(row * scr_width + col) * 2] = c;
143
    scr_addr[(row * scr_width + col) * 2 + 1] = style;
1551 vana 144
 
2025 jermar 145
    cursor_goto(row, col + 1);
1493 palkovsky 146
}
147
 
1534 palkovsky 148
static void draw_text_data(keyfield_t *data)
149
{
150
    int i;
151
 
2025 jermar 152
    for (i = 0; i < scr_width * scr_height; i++) {
153
        scr_addr[i * 2] = data[i].character;
154
        scr_addr[i * 2 + 1] = EGA_STYLE(data[i].style.fg_color,
155
            data[i].style.bg_color);
1534 palkovsky 156
    }
157
}
158
 
1562 vana 159
static int save_screen(void)
160
{
161
    int i;
1720 palkovsky 162
 
2025 jermar 163
    for (i=0; (i < MAX_SAVED_SCREENS) && (saved_screens[i].data); i++)
1720 palkovsky 164
        ;
1565 vana 165
    if (i == MAX_SAVED_SCREENS)
1564 vana 166
        return EINVAL;
2025 jermar 167
    if (!(saved_screens[i].data = malloc(2 * scr_width * scr_height)))
1564 vana 168
        return ENOMEM;
1720 palkovsky 169
    memcpy(saved_screens[i].data, scr_addr, 2 * scr_width * scr_height);
170
 
1562 vana 171
    return i;
172
}
173
 
174
static int print_screen(int i)
175
{
1565 vana 176
    if (saved_screens[i].data)
2025 jermar 177
        memcpy(scr_addr, saved_screens[i].data, 2 * scr_width *
178
            scr_height);
179
    else
180
        return EINVAL;
1562 vana 181
    return i;
182
}
183
 
184
 
1493 palkovsky 185
static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
186
{
187
    int retval;
188
    ipc_callid_t callid;
189
    ipc_call_t call;
190
    char c;
191
    unsigned int row, col;
1534 palkovsky 192
    int bgcolor,fgcolor;
193
    keyfield_t *interbuf = NULL;
194
    size_t intersize = 0;
1562 vana 195
    int i;
1493 palkovsky 196
 
197
    if (client_connected) {
198
        ipc_answer_fast(iid, ELIMIT, 0,0);
199
        return;
200
    }
201
    client_connected = 1;
202
    ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
203
 
204
    while (1) {
205
        callid = async_get_call(&call);
206
        switch (IPC_GET_METHOD(call)) {
207
        case IPC_M_PHONE_HUNGUP:
208
            client_connected = 0;
2025 jermar 209
            ipc_answer_fast(callid, 0, 0, 0);
1493 palkovsky 210
            return; /* Exit thread */
1534 palkovsky 211
        case IPC_M_AS_AREA_SEND:
212
            /* We accept one area for data interchange */
213
            intersize = IPC_GET_ARG2(call);
2025 jermar 214
            if (intersize >= scr_width * scr_height *
215
                sizeof(*interbuf)) {
216
                receive_comm_area(callid, &call, (void *)
217
                    &interbuf);
1534 palkovsky 218
                continue;
219
            }
220
            retval = EINVAL;
221
            break;
222
        case FB_DRAW_TEXT_DATA:
223
            if (!interbuf) {
224
                retval = EINVAL;
225
                break;
226
            }
227
            draw_text_data(interbuf);
228
            retval = 0;
229
            break;
1493 palkovsky 230
        case FB_GET_CSIZE:
1530 palkovsky 231
            ipc_answer_fast(callid, 0, scr_height, scr_width);
1493 palkovsky 232
            continue;
233
        case FB_CLEAR:
234
            clrscr();
235
            retval = 0;
236
            break;
237
        case FB_PUTCHAR:
238
            c = IPC_GET_ARG1(call);
239
            row = IPC_GET_ARG2(call);
240
            col = IPC_GET_ARG3(call);
1534 palkovsky 241
            if (col >= scr_width || row >= scr_height) {
1493 palkovsky 242
                retval = EINVAL;
243
                break;
244
            }
2025 jermar 245
            printchar(c, row, col);
1493 palkovsky 246
            retval = 0;
247
            break;
1551 vana 248
        case FB_CURSOR_GOTO:
249
            row = IPC_GET_ARG1(call);
250
            col = IPC_GET_ARG2(call);
251
            if (row >= scr_height || col >= scr_width) {
252
                retval = EINVAL;
253
                break;
254
            }
2025 jermar 255
            cursor_goto(row, col);
1551 vana 256
            retval = 0;
257
            break;
1562 vana 258
        case FB_SCROLL:
259
            i = IPC_GET_ARG1(call);
2025 jermar 260
            if (i > scr_height || i < -((int) scr_height)) {
1562 vana 261
                retval = EINVAL;
262
                break;
263
            }
264
            scroll(i);
265
            retval = 0;
266
            break;
1551 vana 267
        case FB_CURSOR_VISIBILITY:
268
            if(IPC_GET_ARG1(call))
269
                cursor_enable();
270
            else
271
                cursor_disable();
272
            retval = 0;
273
            break;
1534 palkovsky 274
        case FB_SET_STYLE:
275
            fgcolor = IPC_GET_ARG1(call);
276
            bgcolor = IPC_GET_ARG2(call);
1640 palkovsky 277
            style = EGA_STYLE(fgcolor, bgcolor);
1720 palkovsky 278
            retval = 0;
1577 cejka 279
            break;
1562 vana 280
        case FB_VP_DRAW_PIXMAP:
281
            i = IPC_GET_ARG2(call);
282
            retval = print_screen(i);
283
            break;
284
        case FB_VP2PIXMAP:
285
            retval = save_screen();
286
            break;
287
        case FB_DROP_PIXMAP:
288
            i = IPC_GET_ARG1(call);
289
            if (i >= MAX_SAVED_SCREENS) {
290
                retval = EINVAL;
291
                break;
292
            }
293
            if (saved_screens[i].data) {
294
                free(saved_screens[i].data);
295
                saved_screens[i].data = NULL;
296
            }
1720 palkovsky 297
            retval = 0;
1562 vana 298
            break;
299
 
1493 palkovsky 300
        default:
301
            retval = ENOENT;
302
        }
2025 jermar 303
        ipc_answer_fast(callid, retval, 0, 0);
1493 palkovsky 304
    }
305
}
306
 
307
int ega_init(void)
308
{
309
    void *ega_ph_addr;
1501 palkovsky 310
    size_t sz;
1493 palkovsky 311
 
2025 jermar 312
    ega_ph_addr = (void *) sysinfo_value("fb.address.physical");
313
    scr_width = sysinfo_value("fb.width");
314
    scr_height = sysinfo_value("fb.height");
2015 jermar 315
    iospace_enable(task_get_id(), (void *) EGA_IO_ADDRESS, 2);
1493 palkovsky 316
 
2015 jermar 317
    sz = scr_width * scr_height * 2;
2292 hudecek 318
    scr_addr = as_get_mappable_page(sz);
1493 palkovsky 319
 
2015 jermar 320
    physmem_map(ega_ph_addr, scr_addr, ALIGN_UP(sz, PAGE_SIZE) >>
321
        PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE);
1493 palkovsky 322
 
323
    async_set_client_connection(ega_client_connection);
324
 
325
    return 0;
326
}
1551 vana 327
 
1649 cejka 328
 
329
/**
330
 * @}
331
 */