source: mainline/uspace/fb/ega.c@ 6767c1d

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 6767c1d was 0166e99, checked in by jermar <jermar@…>, 17 years ago

Merge the uspace branch.
  • Property mode set to 100644
File size: 7.6 KB
RevLine 
[df688cd]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 */
[ce5bcb4]28
29/** @defgroup egafb EGA framebuffer
30 * @brief HelenOS EGA framebuffer.
31 * @ingroup fbs
32 * @{
33 */
34/** @file
35 */
36
37
[1160f8d]38#include <stdlib.h>
39#include <unistd.h>
[df688cd]40#include <align.h>
41#include <async.h>
42#include <ipc/ipc.h>
43#include <errno.h>
44#include <stdio.h>
45#include <ddi.h>
46#include <sysinfo.h>
47#include <as.h>
48#include <ipc/fb.h>
49#include <ipc/ipc.h>
50#include <ipc/ns.h>
51#include <ipc/services.h>
[15039b67]52#include <libarch/ddi.h>
[df688cd]53
54#include "ega.h"
[0bf84cc]55#include "../console/screenbuffer.h"
56#include "main.h"
[df688cd]57
[1160f8d]58#define MAX_SAVED_SCREENS 256
59typedef struct saved_screen {
60 short *data;
61} saved_screen;
62
63saved_screen saved_screens[MAX_SAVED_SCREENS];
64
[dc5a0fe1]65
66#define EGA_IO_ADDRESS 0x3d4
67#define EGA_IO_SIZE 2
68
[d3f2cad]69#define NORMAL_COLOR 0x0f
70#define INVERTED_COLOR 0xf0
71
72#define EGA_STYLE(fg,bg) ((fg) > (bg) ? NORMAL_COLOR : INVERTED_COLOR)
73
[df688cd]74/* Allow only 1 connection */
75static int client_connected = 0;
76
77static unsigned int scr_width;
78static unsigned int scr_height;
79static char *scr_addr;
80
[d3f2cad]81static unsigned int style = NORMAL_COLOR;
[0bf84cc]82
[df688cd]83static void clrscr(void)
84{
85 int i;
86
[0bf84cc]87 for (i=0; i < scr_width*scr_height; i++) {
[df688cd]88 scr_addr[i*2] = ' ';
[0bf84cc]89 scr_addr[i*2+1] = style;
90 }
[df688cd]91}
92
[1160f8d]93static void cursor_goto(unsigned int row, unsigned int col)
[dc5a0fe1]94{
95 int ega_cursor;
96
97 ega_cursor=col+scr_width*row;
98
99 outb(EGA_IO_ADDRESS , 0xe);
100 outb(EGA_IO_ADDRESS + 1, (ega_cursor >>8) & 0xff);
101 outb(EGA_IO_ADDRESS , 0xf);
102 outb(EGA_IO_ADDRESS + 1, ega_cursor & 0xff);
103}
104
[1160f8d]105static void cursor_disable(void)
[dc5a0fe1]106{
[15039b67]107 uint8_t stat;
108
[dc5a0fe1]109 outb(EGA_IO_ADDRESS , 0xa);
110 stat=inb(EGA_IO_ADDRESS + 1);
111 outb(EGA_IO_ADDRESS , 0xa);
112 outb(EGA_IO_ADDRESS +1 ,stat | (1<<5) );
113}
114
[1160f8d]115static void cursor_enable(void)
[dc5a0fe1]116{
[15039b67]117 uint8_t stat;
118
[dc5a0fe1]119 outb(EGA_IO_ADDRESS , 0xa);
120 stat=inb(EGA_IO_ADDRESS + 1);
121 outb(EGA_IO_ADDRESS , 0xa);
122 outb(EGA_IO_ADDRESS +1 ,stat & (~(1<<5)) );
123}
124
[1160f8d]125static void scroll(int rows)
126{
127 int i;
128 if (rows > 0) {
[1ed15cd]129 memcpy (scr_addr,((char *)scr_addr) + rows * scr_width * 2, scr_width * scr_height * 2 - rows * scr_width * 2);
130 for (i = 0; i < rows * scr_width ; i ++)
[759c376]131 (((short *)scr_addr) + scr_width * scr_height - rows * scr_width) [i] = ((style << 8) + ' ');
[1160f8d]132 } else if (rows < 0) {
133
[1ed15cd]134 memcpy (((char *)scr_addr) - rows * scr_width * 2 ,scr_addr ,scr_width * scr_height * 2 + rows * scr_width * 2);
135 for (i = 0; i < - rows * scr_width ; i++)
[759c376]136 ((short *)scr_addr) [i] = ((style << 8 ) + ' ');
[1160f8d]137 }
138}
139
[df688cd]140static void printchar(char c, unsigned int row, unsigned int col)
141{
142 scr_addr[(row*scr_width + col)*2] = c;
[0bf84cc]143 scr_addr[(row*scr_width + col)*2+1] = style;
[dc5a0fe1]144
145 cursor_goto(row,col+1);
[0bf84cc]146}
147
148static void draw_text_data(keyfield_t *data)
149{
150 int i;
151
152 for (i=0; i < scr_width*scr_height; i++) {
153 scr_addr[i*2] = data[i].character;
[d3f2cad]154 scr_addr[i*2+1] = EGA_STYLE(data[i].style.fg_color, data[i].style.bg_color);
[0bf84cc]155 }
[df688cd]156}
157
[1160f8d]158static int save_screen(void)
159{
160 int i;
[153a209]161
162 for (i=0; ( i < MAX_SAVED_SCREENS ) && (saved_screens[i].data); i++)
163 ;
[1ed15cd]164 if (i == MAX_SAVED_SCREENS)
[759c376]165 return EINVAL;
[1ed15cd]166 if (!(saved_screens[i].data=malloc( 2 * scr_width*scr_height )))
[759c376]167 return ENOMEM;
[153a209]168 memcpy(saved_screens[i].data, scr_addr, 2 * scr_width * scr_height);
169
[1160f8d]170 return i;
171}
172
173static int print_screen(int i)
174{
[1ed15cd]175 if (saved_screens[i].data)
[153a209]176 memcpy(scr_addr, saved_screens[i].data, 2 * scr_width * scr_height);
[1160f8d]177 else return EINVAL;
178 return i;
179}
180
181
[df688cd]182static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
183{
184 int retval;
185 ipc_callid_t callid;
186 ipc_call_t call;
187 char c;
188 unsigned int row, col;
[0bf84cc]189 int bgcolor,fgcolor;
190 keyfield_t *interbuf = NULL;
191 size_t intersize = 0;
[1160f8d]192 int i;
[df688cd]193
194 if (client_connected) {
195 ipc_answer_fast(iid, ELIMIT, 0,0);
196 return;
197 }
198 client_connected = 1;
199 ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
200
201 while (1) {
202 callid = async_get_call(&call);
203 switch (IPC_GET_METHOD(call)) {
204 case IPC_M_PHONE_HUNGUP:
205 client_connected = 0;
206 ipc_answer_fast(callid,0,0,0);
207 return; /* Exit thread */
[0bf84cc]208 case IPC_M_AS_AREA_SEND:
209 /* We accept one area for data interchange */
210 intersize = IPC_GET_ARG2(call);
211 if (intersize >= scr_width*scr_height*sizeof(*interbuf)) {
[153a209]212 receive_comm_area(callid,&call,(void *)&interbuf);
[0bf84cc]213 continue;
214 }
215 retval = EINVAL;
216 break;
217 case FB_DRAW_TEXT_DATA:
218 if (!interbuf) {
219 retval = EINVAL;
220 break;
221 }
222 draw_text_data(interbuf);
223 retval = 0;
224 break;
[df688cd]225 case FB_GET_CSIZE:
[53daee3]226 ipc_answer_fast(callid, 0, scr_height, scr_width);
[df688cd]227 continue;
228 case FB_CLEAR:
229 clrscr();
230 retval = 0;
231 break;
232 case FB_PUTCHAR:
233 c = IPC_GET_ARG1(call);
234 row = IPC_GET_ARG2(call);
235 col = IPC_GET_ARG3(call);
[0bf84cc]236 if (col >= scr_width || row >= scr_height) {
[df688cd]237 retval = EINVAL;
238 break;
239 }
240 printchar(c,row,col);
241 retval = 0;
242 break;
[dc5a0fe1]243 case FB_CURSOR_GOTO:
244 row = IPC_GET_ARG1(call);
245 col = IPC_GET_ARG2(call);
246 if (row >= scr_height || col >= scr_width) {
247 retval = EINVAL;
248 break;
249 }
250 cursor_goto(row,col);
251 retval = 0;
252 break;
[1160f8d]253 case FB_SCROLL:
254 i = IPC_GET_ARG1(call);
255 if (i > scr_height || i < (- (int)scr_height)) {
256 retval = EINVAL;
257 break;
258 }
259 scroll(i);
260 retval = 0;
261 break;
[dc5a0fe1]262 case FB_CURSOR_VISIBILITY:
263 if(IPC_GET_ARG1(call))
264 cursor_enable();
265 else
266 cursor_disable();
267 retval = 0;
268 break;
[0bf84cc]269 case FB_SET_STYLE:
270 fgcolor = IPC_GET_ARG1(call);
271 bgcolor = IPC_GET_ARG2(call);
[d3f2cad]272 style = EGA_STYLE(fgcolor, bgcolor);
[153a209]273 retval = 0;
[ec9623d]274 break;
[1160f8d]275 case FB_VP_DRAW_PIXMAP:
276 i = IPC_GET_ARG2(call);
277 retval = print_screen(i);
278 break;
279 case FB_VP2PIXMAP:
280 retval = save_screen();
281 break;
282 case FB_DROP_PIXMAP:
283 i = IPC_GET_ARG1(call);
284 if (i >= MAX_SAVED_SCREENS) {
285 retval = EINVAL;
286 break;
287 }
288 if (saved_screens[i].data) {
289 free(saved_screens[i].data);
290 saved_screens[i].data = NULL;
291 }
[153a209]292 retval = 0;
[1160f8d]293 break;
294
[df688cd]295 default:
296 retval = ENOENT;
297 }
298 ipc_answer_fast(callid,retval,0,0);
299 }
300}
301
302int ega_init(void)
303{
304 void *ega_ph_addr;
[bf9afa07]305 size_t sz;
[df688cd]306
307
308 ega_ph_addr=(void *)sysinfo_value("fb.address.physical");
309 scr_width=sysinfo_value("fb.width");
310 scr_height=sysinfo_value("fb.height");
[dc5a0fe1]311 iospace_enable(task_get_id(),(void *)EGA_IO_ADDRESS,2);
[df688cd]312
[bf9afa07]313 sz = scr_width*scr_height*2;
314 scr_addr = as_get_mappable_page(sz);
[df688cd]315
[bf9afa07]316 map_physmem(ega_ph_addr, scr_addr, ALIGN_UP(sz,PAGE_SIZE)>>PAGE_WIDTH,
[df688cd]317 AS_AREA_READ | AS_AREA_WRITE);
318
319 async_set_client_connection(ega_client_connection);
320
321 return 0;
322}
[dc5a0fe1]323
[ce5bcb4]324
325/**
326 * @}
327 */
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