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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;
81
static char *scr_addr;
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
 
1534 palkovsky 154
static void draw_text_data(keyfield_t *data)
155
{
156
    int i;
157
 
2025 jermar 158
    for (i = 0; i < scr_width * scr_height; i++) {
159
        scr_addr[i * 2] = data[i].character;
3866 svoboda 160
        scr_addr[i * 2 + 1] = attr_to_ega_style(&data[i].attrs);
1534 palkovsky 161
    }
162
}
163
 
1562 vana 164
static int save_screen(void)
165
{
166
    int i;
1720 palkovsky 167
 
2619 jermar 168
    for (i = 0; (i < MAX_SAVED_SCREENS) && (saved_screens[i].data); i++)
1720 palkovsky 169
        ;
1565 vana 170
    if (i == MAX_SAVED_SCREENS)
1564 vana 171
        return EINVAL;
2025 jermar 172
    if (!(saved_screens[i].data = malloc(2 * scr_width * scr_height)))
1564 vana 173
        return ENOMEM;
1720 palkovsky 174
    memcpy(saved_screens[i].data, scr_addr, 2 * scr_width * scr_height);
175
 
1562 vana 176
    return i;
177
}
178
 
179
static int print_screen(int i)
180
{
1565 vana 181
    if (saved_screens[i].data)
2025 jermar 182
        memcpy(scr_addr, saved_screens[i].data, 2 * scr_width *
2619 jermar 183
            scr_height);
2025 jermar 184
    else
185
        return EINVAL;
1562 vana 186
    return i;
187
}
188
 
3866 svoboda 189
static int style_to_ega_style(int style)
190
{
191
    unsigned int ega_style;
1562 vana 192
 
3866 svoboda 193
    switch (style) {
194
    case STYLE_NORMAL:
195
        ega_style = INVERTED_COLOR;
196
        break;
197
    case STYLE_EMPHASIS:
198
        ega_style = INVERTED_COLOR | 4;
199
        break;
200
    default:
201
        return INVERTED_COLOR;
202
    }
203
 
204
    return ega_style;
205
}
206
 
207
static unsigned int color_to_ega_style(int fg_color, int bg_color, int attr)
208
{
209
    unsigned int style;
210
 
211
    style = (fg_color & 7) | ((bg_color & 7) << 4);
212
    if (attr & CATTR_BRIGHT)
213
        style = style | 0x08;
214
 
215
    return style;
216
}
217
 
218
static unsigned int rgb_to_ega_style(uint32_t fg, uint32_t bg)
219
{
220
    return (fg > bg) ? NORMAL_COLOR : INVERTED_COLOR;
221
}
222
 
223
static unsigned attr_to_ega_style(const attrs_t *a)
224
{
225
    switch (a->t) {
226
    case at_style: return style_to_ega_style(a->a.s.style);
227
    case at_rgb: return rgb_to_ega_style(a->a.r.fg_color, a->a.r.bg_color);
228
    case at_idx: return color_to_ega_style(a->a.i.fg_color,
229
        a->a.i.bg_color, a->a.i.flags);
230
    default: return INVERTED_COLOR;
231
    }
232
}
233
 
1493 palkovsky 234
static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
235
{
236
    int retval;
237
    ipc_callid_t callid;
238
    ipc_call_t call;
239
    char c;
240
    unsigned int row, col;
3866 svoboda 241
    int bg_color, fg_color, attr;
242
    uint32_t bg_rgb, fg_rgb;
1534 palkovsky 243
    keyfield_t *interbuf = NULL;
244
    size_t intersize = 0;
1562 vana 245
    int i;
1493 palkovsky 246
 
247
    if (client_connected) {
2619 jermar 248
        ipc_answer_0(iid, ELIMIT);
1493 palkovsky 249
        return;
250
    }
251
    client_connected = 1;
2619 jermar 252
    ipc_answer_0(iid, EOK); /* Accept connection */
1493 palkovsky 253
 
254
    while (1) {
255
        callid = async_get_call(&call);
256
        switch (IPC_GET_METHOD(call)) {
257
        case IPC_M_PHONE_HUNGUP:
258
            client_connected = 0;
2619 jermar 259
            ipc_answer_0(callid, EOK);
1493 palkovsky 260
            return; /* Exit thread */
2677 jermar 261
        case IPC_M_SHARE_OUT:
1534 palkovsky 262
            /* We accept one area for data interchange */
263
            intersize = IPC_GET_ARG2(call);
2025 jermar 264
            if (intersize >= scr_width * scr_height *
2619 jermar 265
                sizeof(*interbuf)) {
266
                receive_comm_area(callid, &call,
267
                    (void *) &interbuf);
1534 palkovsky 268
                continue;
269
            }
270
            retval = EINVAL;
271
            break;
272
        case FB_DRAW_TEXT_DATA:
273
            if (!interbuf) {
274
                retval = EINVAL;
275
                break;
276
            }
277
            draw_text_data(interbuf);
278
            retval = 0;
279
            break;
1493 palkovsky 280
        case FB_GET_CSIZE:
2619 jermar 281
            ipc_answer_2(callid, EOK, scr_height, scr_width);
1493 palkovsky 282
            continue;
283
        case FB_CLEAR:
284
            clrscr();
285
            retval = 0;
286
            break;
287
        case FB_PUTCHAR:
288
            c = IPC_GET_ARG1(call);
289
            row = IPC_GET_ARG2(call);
290
            col = IPC_GET_ARG3(call);
1534 palkovsky 291
            if (col >= scr_width || row >= scr_height) {
1493 palkovsky 292
                retval = EINVAL;
293
                break;
294
            }
2025 jermar 295
            printchar(c, row, col);
1493 palkovsky 296
            retval = 0;
297
            break;
1551 vana 298
        case FB_CURSOR_GOTO:
299
            row = IPC_GET_ARG1(call);
300
            col = IPC_GET_ARG2(call);
301
            if (row >= scr_height || col >= scr_width) {
302
                retval = EINVAL;
303
                break;
304
            }
2025 jermar 305
            cursor_goto(row, col);
1551 vana 306
            retval = 0;
307
            break;
1562 vana 308
        case FB_SCROLL:
309
            i = IPC_GET_ARG1(call);
2025 jermar 310
            if (i > scr_height || i < -((int) scr_height)) {
1562 vana 311
                retval = EINVAL;
312
                break;
313
            }
314
            scroll(i);
315
            retval = 0;
316
            break;
1551 vana 317
        case FB_CURSOR_VISIBILITY:
4006 decky 318
            if (IPC_GET_ARG1(call))
1551 vana 319
                cursor_enable();
320
            else
321
                cursor_disable();
322
            retval = 0;
323
            break;
1534 palkovsky 324
        case FB_SET_STYLE:
3866 svoboda 325
            style = style_to_ega_style(IPC_GET_ARG1(call));
3767 svoboda 326
            retval = 0;
327
            break;
328
        case FB_SET_COLOR:
3866 svoboda 329
            fg_color = IPC_GET_ARG1(call);
330
            bg_color = IPC_GET_ARG2(call);
331
            attr = IPC_GET_ARG3(call);
332
            style = color_to_ega_style(fg_color, bg_color, attr);
3767 svoboda 333
            retval = 0;
334
            break;
335
        case FB_SET_RGB_COLOR:
3866 svoboda 336
            fg_rgb = IPC_GET_ARG1(call);
337
            bg_rgb = IPC_GET_ARG2(call);
338
            style = rgb_to_ega_style(fg_rgb, bg_rgb);
1720 palkovsky 339
            retval = 0;
1577 cejka 340
            break;
1562 vana 341
        case FB_VP_DRAW_PIXMAP:
342
            i = IPC_GET_ARG2(call);
343
            retval = print_screen(i);
344
            break;
345
        case FB_VP2PIXMAP:
346
            retval = save_screen();
347
            break;
348
        case FB_DROP_PIXMAP:
349
            i = IPC_GET_ARG1(call);
350
            if (i >= MAX_SAVED_SCREENS) {
351
                retval = EINVAL;
352
                break;
353
            }
354
            if (saved_screens[i].data) {
355
                free(saved_screens[i].data);
356
                saved_screens[i].data = NULL;
357
            }
1720 palkovsky 358
            retval = 0;
1562 vana 359
            break;
360
 
1493 palkovsky 361
        default:
362
            retval = ENOENT;
363
        }
2619 jermar 364
        ipc_answer_0(callid, retval);
1493 palkovsky 365
    }
366
}
367
 
368
int ega_init(void)
369
{
370
    void *ega_ph_addr;
1501 palkovsky 371
    size_t sz;
1493 palkovsky 372
 
2025 jermar 373
    ega_ph_addr = (void *) sysinfo_value("fb.address.physical");
374
    scr_width = sysinfo_value("fb.width");
375
    scr_height = sysinfo_value("fb.height");
3866 svoboda 376
 
3908 decky 377
    if (sysinfo_value("fb.blinking")) {
3866 svoboda 378
        ega_normal_color &= 0x77;
379
        ega_inverted_color &= 0x77;
3657 vana 380
    }
3866 svoboda 381
 
3657 vana 382
    style = NORMAL_COLOR;
383
 
4025 jermar 384
    iospace_enable(task_get_id(), (void *) EGA_IO_BASE, 2);
1493 palkovsky 385
 
2015 jermar 386
    sz = scr_width * scr_height * 2;
2141 jermar 387
    scr_addr = as_get_mappable_page(sz);
1493 palkovsky 388
 
3908 decky 389
    if (physmem_map(ega_ph_addr, scr_addr, ALIGN_UP(sz, PAGE_SIZE) >>
390
        PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE) != 0)
391
        return -1;
1493 palkovsky 392
 
393
    async_set_client_connection(ega_client_connection);
394
 
395
    return 0;
396
}
1551 vana 397
 
1649 cejka 398
 
4006 decky 399
/**
1649 cejka 400
 * @}
401
 */