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