source: mainline/uspace/srv/fb/ega.c@ bda24ee7

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since bda24ee7 was 9805cde, checked in by Jiri Svoboda <jirik.svoboda@…>, 17 years ago

Console color support overhaul. Create C library console interface.
  • Property mode set to 100644
File size: 8.4 KB
Line 
1/*
2 * Copyright (c) 2006 Ondrej 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 */
28
29/** @defgroup egafb EGA framebuffer
30 * @brief HelenOS EGA framebuffer.
31 * @ingroup fbs
32 * @{
33 */
34/** @file
35 */
36
37#include <stdlib.h>
38#include <unistd.h>
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>
51#include <libarch/ddi.h>
52#include <console/style.h>
53#include <console/color.h>
54
55#include "ega.h"
56#include "../console/screenbuffer.h"
57#include "main.h"
58
59#define MAX_SAVED_SCREENS 256
60typedef struct saved_screen {
61 short *data;
62} saved_screen;
63
64saved_screen saved_screens[MAX_SAVED_SCREENS];
65
66#define EGA_IO_ADDRESS 0x3d4
67#define EGA_IO_SIZE 2
68
69int ega_normal_color = 0x0f;
70int ega_inverted_color = 0xf0;
71
72#define NORMAL_COLOR ega_normal_color
73#define INVERTED_COLOR ega_inverted_color
74
75#define EGA_STYLE(fg,bg) ((fg) > (bg) ? NORMAL_COLOR : INVERTED_COLOR)
76
77/* Allow only 1 connection */
78static int client_connected = 0;
79
80static unsigned int scr_width;
81static unsigned int scr_height;
82static char *scr_addr;
83
84static unsigned int style;
85
86static void clrscr(void)
87{
88 int i;
89
90 for (i = 0; i < scr_width * scr_height; i++) {
91 scr_addr[i * 2] = ' ';
92 scr_addr[i * 2 + 1] = style;
93 }
94}
95
96static void cursor_goto(unsigned int row, unsigned int col)
97{
98 int ega_cursor;
99
100 ega_cursor = col + scr_width * row;
101
102 outb(EGA_IO_ADDRESS, 0xe);
103 outb(EGA_IO_ADDRESS + 1, (ega_cursor >> 8) & 0xff);
104 outb(EGA_IO_ADDRESS, 0xf);
105 outb(EGA_IO_ADDRESS + 1, ega_cursor & 0xff);
106}
107
108static void cursor_disable(void)
109{
110 uint8_t stat;
111
112 outb(EGA_IO_ADDRESS, 0xa);
113 stat=inb(EGA_IO_ADDRESS + 1);
114 outb(EGA_IO_ADDRESS, 0xa);
115 outb(EGA_IO_ADDRESS + 1, stat | (1 << 5));
116}
117
118static void cursor_enable(void)
119{
120 uint8_t stat;
121
122 outb(EGA_IO_ADDRESS, 0xa);
123 stat=inb(EGA_IO_ADDRESS + 1);
124 outb(EGA_IO_ADDRESS, 0xa);
125 outb(EGA_IO_ADDRESS + 1, stat & (~(1 << 5)));
126}
127
128static void scroll(int rows)
129{
130 int i;
131 if (rows > 0) {
132 memmove(scr_addr, ((char *) scr_addr) + rows * scr_width * 2,
133 scr_width * scr_height * 2 - rows * scr_width * 2);
134 for (i = 0; i < rows * scr_width; i++)
135 (((short *) scr_addr) + scr_width * scr_height - rows *
136 scr_width)[i] = ((style << 8) + ' ');
137 } else if (rows < 0) {
138 memmove(((char *)scr_addr) - rows * scr_width * 2, scr_addr,
139 scr_width * scr_height * 2 + rows * scr_width * 2);
140 for (i = 0; i < -rows * scr_width; i++)
141 ((short *)scr_addr)[i] = ((style << 8 ) + ' ');
142 }
143}
144
145static void printchar(char c, unsigned int row, unsigned int col)
146{
147 scr_addr[(row * scr_width + col) * 2] = c;
148 scr_addr[(row * scr_width + col) * 2 + 1] = style;
149
150 cursor_goto(row, col + 1);
151}
152
153static void draw_text_data(keyfield_t *data)
154{
155 int i;
156
157 for (i = 0; i < scr_width * scr_height; i++) {
158 scr_addr[i * 2] = data[i].character;
159 /* FIXME
160 scr_addr[i * 2 + 1] = EGA_STYLE(data[i].style.fg_color,
161 data[i].style.bg_color);
162 */
163 }
164}
165
166static int save_screen(void)
167{
168 int i;
169
170 for (i = 0; (i < MAX_SAVED_SCREENS) && (saved_screens[i].data); i++)
171 ;
172 if (i == MAX_SAVED_SCREENS)
173 return EINVAL;
174 if (!(saved_screens[i].data = malloc(2 * scr_width * scr_height)))
175 return ENOMEM;
176 memcpy(saved_screens[i].data, scr_addr, 2 * scr_width * scr_height);
177
178 return i;
179}
180
181static int print_screen(int i)
182{
183 if (saved_screens[i].data)
184 memcpy(scr_addr, saved_screens[i].data, 2 * scr_width *
185 scr_height);
186 else
187 return EINVAL;
188 return i;
189}
190
191
192static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
193{
194 int retval;
195 ipc_callid_t callid;
196 ipc_call_t call;
197 char c;
198 unsigned int row, col;
199 int bgcolor,fgcolor;
200 keyfield_t *interbuf = NULL;
201 size_t intersize = 0;
202 int i;
203
204 if (client_connected) {
205 ipc_answer_0(iid, ELIMIT);
206 return;
207 }
208 client_connected = 1;
209 ipc_answer_0(iid, EOK); /* Accept connection */
210
211 while (1) {
212 callid = async_get_call(&call);
213 switch (IPC_GET_METHOD(call)) {
214 case IPC_M_PHONE_HUNGUP:
215 client_connected = 0;
216 ipc_answer_0(callid, EOK);
217 return; /* Exit thread */
218 case IPC_M_SHARE_OUT:
219 /* We accept one area for data interchange */
220 intersize = IPC_GET_ARG2(call);
221 if (intersize >= scr_width * scr_height *
222 sizeof(*interbuf)) {
223 receive_comm_area(callid, &call,
224 (void *) &interbuf);
225 continue;
226 }
227 retval = EINVAL;
228 break;
229 case FB_DRAW_TEXT_DATA:
230 if (!interbuf) {
231 retval = EINVAL;
232 break;
233 }
234 draw_text_data(interbuf);
235 retval = 0;
236 break;
237 case FB_GET_CSIZE:
238 ipc_answer_2(callid, EOK, scr_height, scr_width);
239 continue;
240 case FB_CLEAR:
241 clrscr();
242 retval = 0;
243 break;
244 case FB_PUTCHAR:
245 c = IPC_GET_ARG1(call);
246 row = IPC_GET_ARG2(call);
247 col = IPC_GET_ARG3(call);
248 if (col >= scr_width || row >= scr_height) {
249 retval = EINVAL;
250 break;
251 }
252 printchar(c, row, col);
253 retval = 0;
254 break;
255 case FB_CURSOR_GOTO:
256 row = IPC_GET_ARG1(call);
257 col = IPC_GET_ARG2(call);
258 if (row >= scr_height || col >= scr_width) {
259 retval = EINVAL;
260 break;
261 }
262 cursor_goto(row, col);
263 retval = 0;
264 break;
265 case FB_SCROLL:
266 i = IPC_GET_ARG1(call);
267 if (i > scr_height || i < -((int) scr_height)) {
268 retval = EINVAL;
269 break;
270 }
271 scroll(i);
272 retval = 0;
273 break;
274 case FB_CURSOR_VISIBILITY:
275 if(IPC_GET_ARG1(call))
276 cursor_enable();
277 else
278 cursor_disable();
279 retval = 0;
280 break;
281 case FB_SET_STYLE:
282 retval = 0;
283 switch (IPC_GET_ARG1(call)) {
284 case STYLE_NORMAL: style = INVERTED_COLOR; break;
285 case STYLE_EMPHASIS: style = INVERTED_COLOR | 4; break;
286 default: retval = EINVAL;
287 }
288 break;
289 case FB_SET_COLOR:
290 fgcolor = IPC_GET_ARG1(call);
291 bgcolor = IPC_GET_ARG2(call);
292 style = (fgcolor & 7) | ((bgcolor & 7) << 4);
293 if (IPC_GET_ARG3(call) & CATTR_BRIGHT)
294 style = style | 0x08;
295 retval = 0;
296 break;
297 case FB_SET_RGB_COLOR:
298 fgcolor = IPC_GET_ARG1(call);
299 bgcolor = IPC_GET_ARG2(call);
300 style = EGA_STYLE(fgcolor, bgcolor);
301 retval = 0;
302 break;
303 case FB_VP_DRAW_PIXMAP:
304 i = IPC_GET_ARG2(call);
305 retval = print_screen(i);
306 break;
307 case FB_VP2PIXMAP:
308 retval = save_screen();
309 break;
310 case FB_DROP_PIXMAP:
311 i = IPC_GET_ARG1(call);
312 if (i >= MAX_SAVED_SCREENS) {
313 retval = EINVAL;
314 break;
315 }
316 if (saved_screens[i].data) {
317 free(saved_screens[i].data);
318 saved_screens[i].data = NULL;
319 }
320 retval = 0;
321 break;
322
323 default:
324 retval = ENOENT;
325 }
326 ipc_answer_0(callid, retval);
327 }
328}
329
330int ega_init(void)
331{
332 void *ega_ph_addr;
333 size_t sz;
334
335 ega_ph_addr = (void *) sysinfo_value("fb.address.physical");
336 scr_width = sysinfo_value("fb.width");
337 scr_height = sysinfo_value("fb.height");
338 if(sysinfo_value("fb.blinking"))
339 {
340 ega_normal_color &= 0x77;
341 ega_inverted_color &= 0x77;
342 }
343 style = NORMAL_COLOR;
344
345 iospace_enable(task_get_id(), (void *) EGA_IO_ADDRESS, 2);
346
347 sz = scr_width * scr_height * 2;
348 scr_addr = as_get_mappable_page(sz);
349
350 physmem_map(ega_ph_addr, scr_addr, ALIGN_UP(sz, PAGE_SIZE) >>
351 PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE);
352
353 async_set_client_connection(ega_client_connection);
354
355 return 0;
356}
357
358
359/**
360 * @}
361 */
Note: See TracBrowser for help on using the repository browser.