source: mainline/uspace/srv/hid/fb/ega.c@ e583fd4

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since e583fd4 was ffa2c8ef, checked in by Martin Decky <martin@…>, 15 years ago

do not intermix low-level IPC methods with async framework methods
  • Property mode set to 100644
File size: 10.5 KB
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[df688cd]1/*
[df4ed85]2 * Copyright (c) 2006 Ondrej Palkovsky
[df688cd]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 */
[ce5bcb4]28
29/** @defgroup egafb EGA framebuffer
[9f1362d4]30 * @brief HelenOS EGA framebuffer.
[ce5bcb4]31 * @ingroup fbs
32 * @{
[9f1362d4]33 */
[ce5bcb4]34/** @file
35 */
36
[1160f8d]37#include <stdlib.h>
38#include <unistd.h>
[df688cd]39#include <align.h>
40#include <async.h>
41#include <errno.h>
42#include <stdio.h>
43#include <ddi.h>
44#include <sysinfo.h>
45#include <as.h>
46#include <ipc/fb.h>
47#include <ipc/ns.h>
48#include <ipc/services.h>
[15039b67]49#include <libarch/ddi.h>
[8dc12ac]50#include <io/style.h>
51#include <io/color.h>
[369a5f8]52#include <io/screenbuffer.h>
[9cd98796]53#include <sys/types.h>
[df688cd]54
55#include "ega.h"
[0bf84cc]56#include "main.h"
[df688cd]57
[9f1362d4]58#define MAX_SAVED_SCREENS 256
59
[1160f8d]60typedef struct saved_screen {
61 short *data;
62} saved_screen;
63
64saved_screen saved_screens[MAX_SAVED_SCREENS];
65
[9f1362d4]66#define EGA_IO_BASE ((ioport8_t *) 0x3d4)
67#define EGA_IO_SIZE 2
[d3f2cad]68
[df688cd]69/* Allow only 1 connection */
70static int client_connected = 0;
71
[9f1362d4]72static sysarg_t scr_width;
73static sysarg_t scr_height;
[dc033a1]74static uint8_t *scr_addr;
[df688cd]75
[9f1362d4]76static uint8_t style_normal = 0xf0;
77static uint8_t style_inverted = 0x0f;
78static uint8_t style;
79
80static uint8_t style_to_ega_style(uint8_t style)
81{
82 switch (style) {
83 case STYLE_EMPHASIS:
84 return (style_normal | 0x04);
85 case STYLE_SELECTED:
86 return (style_inverted | 0x40);
87 case STYLE_INVERTED:
88 return style_inverted;
89 }
90
91 return style_normal;
92}
93
94static uint8_t color_to_ega_style(uint8_t fg_color, uint8_t bg_color,
95 uint8_t attr)
96{
97 uint8_t style = (fg_color & 7) | ((bg_color & 7) << 4);
98
99 if (attr & CATTR_BRIGHT)
100 style |= 0x08;
101
102 return style;
103}
104
105static uint8_t rgb_to_ega_style(uint32_t fg, uint32_t bg)
106{
107 return (fg > bg) ? style_inverted : style_normal;
108}
109
110static uint8_t attr_to_ega_style(const attrs_t *attr)
111{
112 switch (attr->t) {
113 case at_style:
114 return style_to_ega_style(attr->a.s.style);
115 case at_idx:
116 return color_to_ega_style(attr->a.i.fg_color,
117 attr->a.i.bg_color, attr->a.i.flags);
118 case at_rgb:
119 return rgb_to_ega_style(attr->a.r.fg_color, attr->a.r.bg_color);
120 default:
121 return style_normal;
122 }
123}
[0bf84cc]124
[9f1362d4]125static uint8_t ega_glyph(wchar_t ch)
126{
127 if (ch >= 0 && ch < 128)
128 return ch;
129
130 return '?';
131}
[198a9ef]132
[df688cd]133static void clrscr(void)
134{
[0471786]135 unsigned i;
[df688cd]136
[b74959bd]137 for (i = 0; i < scr_width * scr_height; i++) {
[00bb6965]138 scr_addr[i * 2] = ' ';
139 scr_addr[i * 2 + 1] = style;
[0bf84cc]140 }
[df688cd]141}
142
[9f1362d4]143static void cursor_goto(sysarg_t col, sysarg_t row)
[dc5a0fe1]144{
[9f1362d4]145 sysarg_t cursor = col + scr_width * row;
[dc5a0fe1]146
[9cd98796]147 pio_write_8(EGA_IO_BASE, 0xe);
[9f1362d4]148 pio_write_8(EGA_IO_BASE + 1, (cursor >> 8) & 0xff);
[9cd98796]149 pio_write_8(EGA_IO_BASE, 0xf);
[9f1362d4]150 pio_write_8(EGA_IO_BASE + 1, cursor & 0xff);
[dc5a0fe1]151}
152
[1160f8d]153static void cursor_disable(void)
[dc5a0fe1]154{
[9cd98796]155 pio_write_8(EGA_IO_BASE, 0xa);
[9f1362d4]156
157 uint8_t stat = pio_read_8(EGA_IO_BASE + 1);
158
[9cd98796]159 pio_write_8(EGA_IO_BASE, 0xa);
160 pio_write_8(EGA_IO_BASE + 1, stat | (1 << 5));
[dc5a0fe1]161}
162
[1160f8d]163static void cursor_enable(void)
[dc5a0fe1]164{
[9cd98796]165 pio_write_8(EGA_IO_BASE, 0xa);
[9f1362d4]166
167 uint8_t stat = pio_read_8(EGA_IO_BASE + 1);
168
[9cd98796]169 pio_write_8(EGA_IO_BASE, 0xa);
170 pio_write_8(EGA_IO_BASE + 1, stat & (~(1 << 5)));
[dc5a0fe1]171}
172
[9f1362d4]173static void scroll(ssize_t rows)
[1160f8d]174{
[9f1362d4]175 size_t i;
176
[1160f8d]177 if (rows > 0) {
[8b74af07]178 memmove(scr_addr, ((char *) scr_addr) + rows * scr_width * 2,
[b74959bd]179 scr_width * scr_height * 2 - rows * scr_width * 2);
[00bb6965]180 for (i = 0; i < rows * scr_width; i++)
181 (((short *) scr_addr) + scr_width * scr_height - rows *
[b74959bd]182 scr_width)[i] = ((style << 8) + ' ');
[1160f8d]183 } else if (rows < 0) {
[8b74af07]184 memmove(((char *)scr_addr) - rows * scr_width * 2, scr_addr,
[b74959bd]185 scr_width * scr_height * 2 + rows * scr_width * 2);
[00bb6965]186 for (i = 0; i < -rows * scr_width; i++)
[9f1362d4]187 ((short *) scr_addr)[i] = ((style << 8 ) + ' ');
[1160f8d]188 }
189}
190
[9f1362d4]191static void printchar(wchar_t c, sysarg_t col, sysarg_t row)
[df688cd]192{
[b27eb71]193 scr_addr[(row * scr_width + col) * 2] = ega_glyph(c);
[00bb6965]194 scr_addr[(row * scr_width + col) * 2 + 1] = style;
[dc5a0fe1]195
[ba2a055]196 cursor_goto(col + 1, row);
[0bf84cc]197}
198
[dc033a1]199/** Draw text data to viewport.
200 *
201 * @param vport Viewport id
202 * @param data Text data.
[9f1362d4]203 * @param x Leftmost column of the area.
204 * @param y Topmost row of the area.
205 * @param w Number of rows.
206 * @param h Number of columns.
207 *
[dc033a1]208 */
[9f1362d4]209static void draw_text_data(keyfield_t *data, sysarg_t x, sysarg_t y,
210 sysarg_t w, sysarg_t h)
[0bf84cc]211{
[9f1362d4]212 sysarg_t i;
213 sysarg_t j;
[dc033a1]214 keyfield_t *field;
215 uint8_t *dp;
[9f1362d4]216
[dc033a1]217 for (j = 0; j < h; j++) {
218 for (i = 0; i < w; i++) {
219 field = &data[j * w + i];
220 dp = &scr_addr[2 * ((y + j) * scr_width + (x + i))];
[9f1362d4]221
[b27eb71]222 dp[0] = ega_glyph(field->character);
[dc033a1]223 dp[1] = attr_to_ega_style(&field->attrs);
224 }
[0bf84cc]225 }
[df688cd]226}
227
[1160f8d]228static int save_screen(void)
229{
[96b02eb9]230 sysarg_t i;
[9f1362d4]231
232 /* Find empty screen */
233 for (i = 0; (i < MAX_SAVED_SCREENS) && (saved_screens[i].data); i++);
234
235 if (i == MAX_SAVED_SCREENS)
[759c376]236 return EINVAL;
[9f1362d4]237
238 if (!(saved_screens[i].data = malloc(2 * scr_width * scr_height)))
[759c376]239 return ENOMEM;
[9f1362d4]240
[153a209]241 memcpy(saved_screens[i].data, scr_addr, 2 * scr_width * scr_height);
[9f1362d4]242 return (int) i;
[1160f8d]243}
244
[96b02eb9]245static int print_screen(sysarg_t i)
[1160f8d]246{
[9f1362d4]247 if ((i >= MAX_SAVED_SCREENS) || (saved_screens[i].data))
[00bb6965]248 memcpy(scr_addr, saved_screens[i].data, 2 * scr_width *
[b74959bd]249 scr_height);
[00bb6965]250 else
251 return EINVAL;
[9f1362d4]252
253 return (int) i;
[b27eb71]254}
255
[df688cd]256static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
257{
[0bf84cc]258 size_t intersize = 0;
[9f1362d4]259 keyfield_t *interbuf = NULL;
[369a5f8]260
[df688cd]261 if (client_connected) {
[ffa2c8ef]262 async_answer_0(iid, ELIMIT);
[df688cd]263 return;
264 }
[9f1362d4]265
266 /* Accept connection */
[df688cd]267 client_connected = 1;
[ffa2c8ef]268 async_answer_0(iid, EOK);
[9f1362d4]269
270 while (true) {
271 ipc_call_t call;
272 ipc_callid_t callid = async_get_call(&call);
273
274 wchar_t c;
275
[96b02eb9]276 sysarg_t col;
277 sysarg_t row;
278 sysarg_t w;
279 sysarg_t h;
[9f1362d4]280
281 ssize_t rows;
282
283 uint8_t bg_color;
284 uint8_t fg_color;
285 uint8_t attr;
286
287 uint32_t fg_rgb;
288 uint32_t bg_rgb;
289
[96b02eb9]290 sysarg_t scr;
[9f1362d4]291 int retval;
292
[228e490]293 switch (IPC_GET_IMETHOD(call)) {
[df688cd]294 case IPC_M_PHONE_HUNGUP:
295 client_connected = 0;
[ffa2c8ef]296 async_answer_0(callid, EOK);
[9f1362d4]297
298 /* Exit thread */
299 return;
[27d293a]300 case IPC_M_SHARE_OUT:
[0bf84cc]301 /* We accept one area for data interchange */
302 intersize = IPC_GET_ARG2(call);
[00bb6965]303 if (intersize >= scr_width * scr_height *
[b74959bd]304 sizeof(*interbuf)) {
305 receive_comm_area(callid, &call,
306 (void *) &interbuf);
[0bf84cc]307 continue;
308 }
[9f1362d4]309
[0bf84cc]310 retval = EINVAL;
311 break;
312 case FB_DRAW_TEXT_DATA:
313 if (!interbuf) {
314 retval = EINVAL;
315 break;
316 }
[9f1362d4]317
318 col = IPC_GET_ARG1(call);
319 row = IPC_GET_ARG2(call);
320 w = IPC_GET_ARG3(call);
321 h = IPC_GET_ARG4(call);
322
323 if ((col + w > scr_width) || (row + h > scr_height)) {
[dc033a1]324 retval = EINVAL;
325 break;
326 }
[9f1362d4]327
[dc033a1]328 draw_text_data(interbuf, col, row, w, h);
[0bf84cc]329 retval = 0;
330 break;
[df688cd]331 case FB_GET_CSIZE:
[ffa2c8ef]332 async_answer_2(callid, EOK, scr_width, scr_height);
[df688cd]333 continue;
[50cfa6c]334 case FB_GET_COLOR_CAP:
[ffa2c8ef]335 async_answer_1(callid, EOK, FB_CCAP_INDEXED);
[50cfa6c]336 continue;
[df688cd]337 case FB_CLEAR:
338 clrscr();
339 retval = 0;
340 break;
341 case FB_PUTCHAR:
342 c = IPC_GET_ARG1(call);
[8dc12ac]343 col = IPC_GET_ARG2(call);
344 row = IPC_GET_ARG3(call);
[9f1362d4]345
346 if ((col >= scr_width) || (row >= scr_height)) {
[df688cd]347 retval = EINVAL;
348 break;
349 }
[9f1362d4]350
[8dc12ac]351 printchar(c, col, row);
[df688cd]352 retval = 0;
353 break;
[9f1362d4]354 case FB_CURSOR_GOTO:
355 col = IPC_GET_ARG1(call);
[8dc12ac]356 row = IPC_GET_ARG2(call);
[9f1362d4]357
358 if ((row >= scr_height) || (col >= scr_width)) {
[dc5a0fe1]359 retval = EINVAL;
360 break;
361 }
[9f1362d4]362
[8dc12ac]363 cursor_goto(col, row);
[9f1362d4]364 retval = 0;
365 break;
[1160f8d]366 case FB_SCROLL:
[9f1362d4]367 rows = IPC_GET_ARG1(call);
368
369 if (rows >= 0) {
[96b02eb9]370 if ((sysarg_t) rows > scr_height) {
[9f1362d4]371 retval = EINVAL;
372 break;
373 }
374 } else {
[96b02eb9]375 if ((sysarg_t) (-rows) > scr_height) {
[9f1362d4]376 retval = EINVAL;
377 break;
378 }
[1160f8d]379 }
[9f1362d4]380
381 scroll(rows);
[1160f8d]382 retval = 0;
383 break;
[dc5a0fe1]384 case FB_CURSOR_VISIBILITY:
[13ec8055]385 if (IPC_GET_ARG1(call))
[dc5a0fe1]386 cursor_enable();
387 else
388 cursor_disable();
[9f1362d4]389
[dc5a0fe1]390 retval = 0;
391 break;
[0bf84cc]392 case FB_SET_STYLE:
[198a9ef]393 style = style_to_ega_style(IPC_GET_ARG1(call));
[9805cde]394 retval = 0;
395 break;
396 case FB_SET_COLOR:
[198a9ef]397 fg_color = IPC_GET_ARG1(call);
398 bg_color = IPC_GET_ARG2(call);
399 attr = IPC_GET_ARG3(call);
[9f1362d4]400
[198a9ef]401 style = color_to_ega_style(fg_color, bg_color, attr);
[9805cde]402 retval = 0;
403 break;
404 case FB_SET_RGB_COLOR:
[198a9ef]405 fg_rgb = IPC_GET_ARG1(call);
406 bg_rgb = IPC_GET_ARG2(call);
[9f1362d4]407
[198a9ef]408 style = rgb_to_ega_style(fg_rgb, bg_rgb);
[153a209]409 retval = 0;
[ec9623d]410 break;
[1160f8d]411 case FB_VP_DRAW_PIXMAP:
[9f1362d4]412 scr = IPC_GET_ARG2(call);
413 retval = print_screen(scr);
[1160f8d]414 break;
415 case FB_VP2PIXMAP:
416 retval = save_screen();
417 break;
418 case FB_DROP_PIXMAP:
[9f1362d4]419 scr = IPC_GET_ARG1(call);
420
421 if (scr >= MAX_SAVED_SCREENS) {
[1160f8d]422 retval = EINVAL;
423 break;
424 }
[9f1362d4]425
426 if (saved_screens[scr].data) {
427 free(saved_screens[scr].data);
428 saved_screens[scr].data = NULL;
[1160f8d]429 }
[9f1362d4]430
[153a209]431 retval = 0;
[1160f8d]432 break;
[ebfabf6]433 case FB_SCREEN_YIELD:
434 case FB_SCREEN_RECLAIM:
[10270a8]435 retval = EOK;
436 break;
[df688cd]437 default:
[d2cc7e1]438 retval = EINVAL;
[df688cd]439 }
[ffa2c8ef]440 async_answer_0(callid, retval);
[df688cd]441 }
442}
443
444int ega_init(void)
445{
[d9fae235]446 sysarg_t paddr;
447 if (sysinfo_get_value("fb.address.physical", &paddr) != EOK)
448 return -1;
449
[9f1362d4]450 if (sysinfo_get_value("fb.width", &scr_width) != EOK)
[d9fae235]451 return -1;
452
[9f1362d4]453 if (sysinfo_get_value("fb.height", &scr_height) != EOK)
[d9fae235]454 return -1;
455
456 sysarg_t blinking;
457 if (sysinfo_get_value("fb.blinking", &blinking) != EOK)
458 blinking = false;
459
[9f1362d4]460 void *ega_ph_addr = (void *) paddr;
[d9fae235]461 if (blinking) {
[9f1362d4]462 style_normal &= 0x77;
463 style_inverted &= 0x77;
[323a5aaf]464 }
[d9fae235]465
[9f1362d4]466 style = style_normal;
[d9fae235]467
[9cd98796]468 iospace_enable(task_get_id(), (void *) EGA_IO_BASE, 2);
[d9fae235]469
[9f1362d4]470 size_t sz = scr_width * scr_height * 2;
[2057572]471 scr_addr = as_get_mappable_page(sz);
[d9fae235]472
[ae318d3]473 if (physmem_map(ega_ph_addr, scr_addr, ALIGN_UP(sz, PAGE_SIZE) >>
474 PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE) != 0)
475 return -1;
[9f1362d4]476
[df688cd]477 async_set_client_connection(ega_client_connection);
[9f1362d4]478
[df688cd]479 return 0;
480}
[dc5a0fe1]481
[13ec8055]482/**
[ce5bcb4]483 * @}
484 */
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