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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
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
 */
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>
4457 decky 52
#include <io/style.h>
53
#include <io/color.h>
4025 jermar 54
#include <sys/types.h>
1493 palkovsky 55
 
56
#include "ega.h"
1534 palkovsky 57
#include "../console/screenbuffer.h"
58
#include "main.h"
1493 palkovsky 59
 
1562 vana 60
#define MAX_SAVED_SCREENS 256
61
typedef struct saved_screen {
62
    short *data;
63
} saved_screen;
1551 vana 64
 
1562 vana 65
saved_screen saved_screens[MAX_SAVED_SCREENS];
66
 
4025 jermar 67
#define EGA_IO_BASE ((ioport8_t *) 0x3d4)
1551 vana 68
#define EGA_IO_SIZE 2
69
 
3767 svoboda 70
int ega_normal_color = 0x0f;
71
int ega_inverted_color = 0xf0;
1640 palkovsky 72
 
4457 decky 73
#define NORMAL_COLOR        ega_normal_color
3657 vana 74
#define INVERTED_COLOR      ega_inverted_color
75
 
1493 palkovsky 76
/* Allow only 1 connection */
77
static int client_connected = 0;
78
 
79
static unsigned int scr_width;
80
static unsigned int scr_height;
4167 svoboda 81
static uint8_t *scr_addr;
1493 palkovsky 82
 
3657 vana 83
static unsigned int style;
1534 palkovsky 84
 
3866 svoboda 85
static unsigned attr_to_ega_style(const attrs_t *a);
4235 svoboda 86
static uint8_t ega_glyph(wchar_t ch);
3866 svoboda 87
 
1493 palkovsky 88
static void clrscr(void)
89
{
90
    int i;
91
 
2619 jermar 92
    for (i = 0; i < scr_width * scr_height; i++) {
2025 jermar 93
        scr_addr[i * 2] = ' ';
94
        scr_addr[i * 2 + 1] = style;
1534 palkovsky 95
    }
1493 palkovsky 96
}
97
 
4457 decky 98
static void cursor_goto(unsigned int col, unsigned int row)
1551 vana 99
{
100
    int ega_cursor;
101
 
2025 jermar 102
    ega_cursor = col + scr_width * row;
1551 vana 103
 
4025 jermar 104
    pio_write_8(EGA_IO_BASE, 0xe);
105
    pio_write_8(EGA_IO_BASE + 1, (ega_cursor >> 8) & 0xff);
106
    pio_write_8(EGA_IO_BASE, 0xf);
107
    pio_write_8(EGA_IO_BASE + 1, ega_cursor & 0xff);
1551 vana 108
}
109
 
1562 vana 110
static void cursor_disable(void)
1551 vana 111
{
1694 palkovsky 112
    uint8_t stat;
113
 
4025 jermar 114
    pio_write_8(EGA_IO_BASE, 0xa);
115
    stat = pio_read_8(EGA_IO_BASE + 1);
116
    pio_write_8(EGA_IO_BASE, 0xa);
117
    pio_write_8(EGA_IO_BASE + 1, stat | (1 << 5));
1551 vana 118
}
119
 
1562 vana 120
static void cursor_enable(void)
1551 vana 121
{
1694 palkovsky 122
    uint8_t stat;
123
 
4025 jermar 124
    pio_write_8(EGA_IO_BASE, 0xa);
125
    stat = pio_read_8(EGA_IO_BASE + 1);
126
    pio_write_8(EGA_IO_BASE, 0xa);
127
    pio_write_8(EGA_IO_BASE + 1, stat & (~(1 << 5)));
1551 vana 128
}
129
 
1562 vana 130
static void scroll(int rows)
131
{
132
    int i;
133
    if (rows > 0) {
3755 svoboda 134
        memmove(scr_addr, ((char *) scr_addr) + rows * scr_width * 2,
2619 jermar 135
            scr_width * scr_height * 2 - rows * scr_width * 2);
2025 jermar 136
        for (i = 0; i < rows * scr_width; i++)
137
            (((short *) scr_addr) + scr_width * scr_height - rows *
2619 jermar 138
                scr_width)[i] = ((style << 8) + ' ');
1562 vana 139
    } else if (rows < 0) {
3755 svoboda 140
        memmove(((char *)scr_addr) - rows * scr_width * 2, scr_addr,
2619 jermar 141
            scr_width * scr_height * 2 + rows * scr_width * 2);
2025 jermar 142
        for (i = 0; i < -rows * scr_width; i++)
143
            ((short *)scr_addr)[i] = ((style << 8 ) + ' ');
1562 vana 144
    }
145
}
146
 
4457 decky 147
static void printchar(wchar_t c, unsigned int col, unsigned int row)
1493 palkovsky 148
{
4235 svoboda 149
    scr_addr[(row * scr_width + col) * 2] = ega_glyph(c);
2025 jermar 150
    scr_addr[(row * scr_width + col) * 2 + 1] = style;
1551 vana 151
 
4525 svoboda 152
    cursor_goto(col + 1, row);
1493 palkovsky 153
}
154
 
4167 svoboda 155
/** Draw text data to viewport.
156
 *
157
 * @param vport Viewport id
158
 * @param data  Text data.
159
 * @param x Leftmost column of the area.
160
 * @param y Topmost row of the area.
161
 * @param w Number of rows.
162
 * @param h Number of columns.
163
 */
164
static void draw_text_data(keyfield_t *data, unsigned int x,
165
    unsigned int y, unsigned int w, unsigned int h)
1534 palkovsky 166
{
4167 svoboda 167
    unsigned int i, j;
168
    keyfield_t *field;
169
    uint8_t *dp;
1534 palkovsky 170
 
4167 svoboda 171
    for (j = 0; j < h; j++) {
172
        for (i = 0; i < w; i++) {
173
            field = &data[j * w + i];
174
            dp = &scr_addr[2 * ((y + j) * scr_width + (x + i))];
175
 
4235 svoboda 176
            dp[0] = ega_glyph(field->character);
4167 svoboda 177
            dp[1] = attr_to_ega_style(&field->attrs);
178
        }
1534 palkovsky 179
    }
180
}
181
 
1562 vana 182
static int save_screen(void)
183
{
184
    int i;
1720 palkovsky 185
 
2619 jermar 186
    for (i = 0; (i < MAX_SAVED_SCREENS) && (saved_screens[i].data); i++)
1720 palkovsky 187
        ;
1565 vana 188
    if (i == MAX_SAVED_SCREENS)
1564 vana 189
        return EINVAL;
2025 jermar 190
    if (!(saved_screens[i].data = malloc(2 * scr_width * scr_height)))
1564 vana 191
        return ENOMEM;
1720 palkovsky 192
    memcpy(saved_screens[i].data, scr_addr, 2 * scr_width * scr_height);
193
 
1562 vana 194
    return i;
195
}
196
 
197
static int print_screen(int i)
198
{
1565 vana 199
    if (saved_screens[i].data)
2025 jermar 200
        memcpy(scr_addr, saved_screens[i].data, 2 * scr_width *
2619 jermar 201
            scr_height);
2025 jermar 202
    else
203
        return EINVAL;
1562 vana 204
    return i;
205
}
206
 
3866 svoboda 207
static int style_to_ega_style(int style)
208
{
209
    unsigned int ega_style;
1562 vana 210
 
3866 svoboda 211
    switch (style) {
212
    case STYLE_NORMAL:
213
        ega_style = INVERTED_COLOR;
214
        break;
215
    case STYLE_EMPHASIS:
216
        ega_style = INVERTED_COLOR | 4;
217
        break;
218
    default:
219
        return INVERTED_COLOR;
220
    }
221
 
222
    return ega_style;
223
}
224
 
225
static unsigned int color_to_ega_style(int fg_color, int bg_color, int attr)
226
{
227
    unsigned int style;
228
 
229
    style = (fg_color & 7) | ((bg_color & 7) << 4);
230
    if (attr & CATTR_BRIGHT)
231
        style = style | 0x08;
232
 
233
    return style;
234
}
235
 
236
static unsigned int rgb_to_ega_style(uint32_t fg, uint32_t bg)
237
{
238
    return (fg > bg) ? NORMAL_COLOR : INVERTED_COLOR;
239
}
240
 
241
static unsigned attr_to_ega_style(const attrs_t *a)
242
{
243
    switch (a->t) {
4457 decky 244
    case at_style:
245
        return style_to_ega_style(a->a.s.style);
246
    case at_rgb:
247
        return rgb_to_ega_style(a->a.r.fg_color, a->a.r.bg_color);
248
    case at_idx:
249
        return color_to_ega_style(a->a.i.fg_color,
250
            a->a.i.bg_color, a->a.i.flags);
251
    default:
252
        return INVERTED_COLOR;
3866 svoboda 253
    }
254
}
255
 
4235 svoboda 256
static uint8_t ega_glyph(wchar_t ch)
257
{
258
    if (ch >= 0 && ch < 128)
259
        return ch;
260
 
261
    return '?';
262
}
263
 
1493 palkovsky 264
static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
265
{
266
    int retval;
267
    ipc_callid_t callid;
268
    ipc_call_t call;
4235 svoboda 269
    wchar_t c;
4167 svoboda 270
    unsigned int row, col, w, h;
3866 svoboda 271
    int bg_color, fg_color, attr;
272
    uint32_t bg_rgb, fg_rgb;
1534 palkovsky 273
    keyfield_t *interbuf = NULL;
274
    size_t intersize = 0;
1562 vana 275
    int i;
1493 palkovsky 276
 
277
    if (client_connected) {
2619 jermar 278
        ipc_answer_0(iid, ELIMIT);
1493 palkovsky 279
        return;
280
    }
281
    client_connected = 1;
2619 jermar 282
    ipc_answer_0(iid, EOK); /* Accept connection */
1493 palkovsky 283
 
284
    while (1) {
285
        callid = async_get_call(&call);
286
        switch (IPC_GET_METHOD(call)) {
287
        case IPC_M_PHONE_HUNGUP:
288
            client_connected = 0;
2619 jermar 289
            ipc_answer_0(callid, EOK);
1493 palkovsky 290
            return; /* Exit thread */
2677 jermar 291
        case IPC_M_SHARE_OUT:
1534 palkovsky 292
            /* We accept one area for data interchange */
293
            intersize = IPC_GET_ARG2(call);
2025 jermar 294
            if (intersize >= scr_width * scr_height *
2619 jermar 295
                sizeof(*interbuf)) {
296
                receive_comm_area(callid, &call,
297
                    (void *) &interbuf);
1534 palkovsky 298
                continue;
299
            }
300
            retval = EINVAL;
301
            break;
302
        case FB_DRAW_TEXT_DATA:
4167 svoboda 303
            col = IPC_GET_ARG1(call);
304
            row = IPC_GET_ARG2(call);
305
            w = IPC_GET_ARG3(call);
306
            h = IPC_GET_ARG4(call);
1534 palkovsky 307
            if (!interbuf) {
308
                retval = EINVAL;
309
                break;
310
            }
4167 svoboda 311
            if (col + w > scr_width || row + h > scr_height) {
312
                retval = EINVAL;
313
                break;
314
            }
315
            draw_text_data(interbuf, col, row, w, h);
1534 palkovsky 316
            retval = 0;
317
            break;
1493 palkovsky 318
        case FB_GET_CSIZE:
4525 svoboda 319
            ipc_answer_2(callid, EOK, scr_width, scr_height);
1493 palkovsky 320
            continue;
321
        case FB_CLEAR:
322
            clrscr();
323
            retval = 0;
324
            break;
325
        case FB_PUTCHAR:
326
            c = IPC_GET_ARG1(call);
4457 decky 327
            col = IPC_GET_ARG2(call);
328
            row = IPC_GET_ARG3(call);
1534 palkovsky 329
            if (col >= scr_width || row >= scr_height) {
1493 palkovsky 330
                retval = EINVAL;
331
                break;
332
            }
4457 decky 333
            printchar(c, col, row);
1493 palkovsky 334
            retval = 0;
335
            break;
1551 vana 336
        case FB_CURSOR_GOTO:
4457 decky 337
            col = IPC_GET_ARG1(call);
338
            row = IPC_GET_ARG2(call);
1551 vana 339
            if (row >= scr_height || col >= scr_width) {
340
                retval = EINVAL;
341
                break;
342
            }
4457 decky 343
            cursor_goto(col, row);
1551 vana 344
            retval = 0;
345
            break;
1562 vana 346
        case FB_SCROLL:
347
            i = IPC_GET_ARG1(call);
2025 jermar 348
            if (i > scr_height || i < -((int) scr_height)) {
1562 vana 349
                retval = EINVAL;
350
                break;
351
            }
352
            scroll(i);
353
            retval = 0;
354
            break;
1551 vana 355
        case FB_CURSOR_VISIBILITY:
4006 decky 356
            if (IPC_GET_ARG1(call))
1551 vana 357
                cursor_enable();
358
            else
359
                cursor_disable();
360
            retval = 0;
361
            break;
1534 palkovsky 362
        case FB_SET_STYLE:
3866 svoboda 363
            style = style_to_ega_style(IPC_GET_ARG1(call));
3767 svoboda 364
            retval = 0;
365
            break;
366
        case FB_SET_COLOR:
3866 svoboda 367
            fg_color = IPC_GET_ARG1(call);
368
            bg_color = IPC_GET_ARG2(call);
369
            attr = IPC_GET_ARG3(call);
370
            style = color_to_ega_style(fg_color, bg_color, attr);
3767 svoboda 371
            retval = 0;
372
            break;
373
        case FB_SET_RGB_COLOR:
3866 svoboda 374
            fg_rgb = IPC_GET_ARG1(call);
375
            bg_rgb = IPC_GET_ARG2(call);
376
            style = rgb_to_ega_style(fg_rgb, bg_rgb);
1720 palkovsky 377
            retval = 0;
1577 cejka 378
            break;
1562 vana 379
        case FB_VP_DRAW_PIXMAP:
380
            i = IPC_GET_ARG2(call);
381
            retval = print_screen(i);
382
            break;
383
        case FB_VP2PIXMAP:
384
            retval = save_screen();
385
            break;
386
        case FB_DROP_PIXMAP:
387
            i = IPC_GET_ARG1(call);
388
            if (i >= MAX_SAVED_SCREENS) {
389
                retval = EINVAL;
390
                break;
391
            }
392
            if (saved_screens[i].data) {
393
                free(saved_screens[i].data);
394
                saved_screens[i].data = NULL;
395
            }
1720 palkovsky 396
            retval = 0;
1562 vana 397
            break;
4326 svoboda 398
        case FB_SCREEN_YIELD:
399
        case FB_SCREEN_RECLAIM:
4325 svoboda 400
            retval = EOK;
401
            break;
1493 palkovsky 402
        default:
4164 svoboda 403
            retval = EINVAL;
1493 palkovsky 404
        }
2619 jermar 405
        ipc_answer_0(callid, retval);
1493 palkovsky 406
    }
407
}
408
 
409
int ega_init(void)
410
{
411
    void *ega_ph_addr;
1501 palkovsky 412
    size_t sz;
1493 palkovsky 413
 
2025 jermar 414
    ega_ph_addr = (void *) sysinfo_value("fb.address.physical");
415
    scr_width = sysinfo_value("fb.width");
416
    scr_height = sysinfo_value("fb.height");
3866 svoboda 417
 
3908 decky 418
    if (sysinfo_value("fb.blinking")) {
3866 svoboda 419
        ega_normal_color &= 0x77;
420
        ega_inverted_color &= 0x77;
3657 vana 421
    }
3866 svoboda 422
 
3657 vana 423
    style = NORMAL_COLOR;
424
 
4025 jermar 425
    iospace_enable(task_get_id(), (void *) EGA_IO_BASE, 2);
1493 palkovsky 426
 
2015 jermar 427
    sz = scr_width * scr_height * 2;
2141 jermar 428
    scr_addr = as_get_mappable_page(sz);
1493 palkovsky 429
 
3908 decky 430
    if (physmem_map(ega_ph_addr, scr_addr, ALIGN_UP(sz, PAGE_SIZE) >>
431
        PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE) != 0)
432
        return -1;
1493 palkovsky 433
 
434
    async_set_client_connection(ega_client_connection);
435
 
436
    return 0;
437
}
1551 vana 438
 
1649 cejka 439
 
4006 decky 440
/**
1649 cejka 441
 * @}
442
 */