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