source: mainline/fb/fb.c@ 83b1d61

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 83b1d61 was 83b1d61, checked in by Ondrej Palkovsky <ondrap@…>, 19 years ago

Added mmap, munmap calls.
Added possibility to access framebuffer using shared memory.
  • Property mode set to 100644
File size: 17.4 KB
Line 
1/*
2 * Copyright (C) 2006 Jakub Vana
3 * Copyright (C) 2006 Ondrej Palkovsky
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * - Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * - The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ddi.h>
34#include <sysinfo.h>
35#include <align.h>
36#include <as.h>
37#include <ipc/fb.h>
38#include <ipc/ipc.h>
39#include <ipc/ns.h>
40#include <ipc/services.h>
41#include <kernel/errno.h>
42#include <async.h>
43
44#include "font-8x16.h"
45#include "helenos.xbm"
46#include "fb.h"
47#include "main.h"
48#include "../console/screenbuffer.h"
49
50#define DEFAULT_BGCOLOR 0x000080
51#define DEFAULT_FGCOLOR 0xffff00
52
53/***************************************************************/
54/* Pixel specific fuctions */
55
56typedef void (*putpixel_fn_t)(unsigned int x, unsigned int y, int color);
57typedef int (*getpixel_fn_t)(unsigned int x, unsigned int y);
58
59struct {
60 __u8 *fbaddress ;
61
62 unsigned int xres ;
63 unsigned int yres ;
64 unsigned int scanline ;
65 unsigned int pixelbytes ;
66
67 putpixel_fn_t putpixel;
68 getpixel_fn_t getpixel;
69} screen;
70
71typedef struct {
72 int initialized;
73 unsigned int x, y;
74 unsigned int width, height;
75
76 /* Text support in window */
77 unsigned int rows, cols;
78 /* Style for text printing */
79 int bgcolor, fgcolor;
80 /* Auto-cursor position */
81 int cursor_active, cur_col, cur_row;
82 int cursor_shown;
83} viewport_t;
84
85#define MAX_VIEWPORTS 128
86static viewport_t viewports[128];
87
88/* Allow only 1 connection */
89static int client_connected = 0;
90
91#define RED(x, bits) ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))
92#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
93#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
94
95#define COL_WIDTH 8
96#define ROW_BYTES (screen.scanline * FONT_SCANLINES)
97
98#define POINTPOS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)
99
100/** Put pixel - 24-bit depth, 1 free byte */
101static void putpixel_4byte(unsigned int x, unsigned int y, int color)
102{
103 *((__u32 *)(screen.fbaddress + POINTPOS(x, y))) = color;
104}
105
106/** Return pixel color - 24-bit depth, 1 free byte */
107static int getpixel_4byte(unsigned int x, unsigned int y)
108{
109 return *((__u32 *)(screen.fbaddress + POINTPOS(x, y))) & 0xffffff;
110}
111
112/** Put pixel - 24-bit depth */
113static void putpixel_3byte(unsigned int x, unsigned int y, int color)
114{
115 unsigned int startbyte = POINTPOS(x, y);
116
117#if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
118 screen.fbaddress[startbyte] = RED(color, 8);
119 screen.fbaddress[startbyte + 1] = GREEN(color, 8);
120 screen.fbaddress[startbyte + 2] = BLUE(color, 8);
121#else
122 screen.fbaddress[startbyte + 2] = RED(color, 8);
123 screen.fbaddress[startbyte + 1] = GREEN(color, 8);
124 screen.fbaddress[startbyte + 0] = BLUE(color, 8);
125#endif
126
127}
128
129/** Return pixel color - 24-bit depth */
130static int getpixel_3byte(unsigned int x, unsigned int y)
131{
132 unsigned int startbyte = POINTPOS(x, y);
133
134
135
136#if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
137 return screen.fbaddress[startbyte] << 16 | screen.fbaddress[startbyte + 1] << 8 | screen.fbaddress[startbyte + 2];
138#else
139 return screen.fbaddress[startbyte + 2] << 16 | screen.fbaddress[startbyte + 1] << 8 | screen.fbaddress[startbyte + 0];
140#endif
141
142
143}
144
145/** Put pixel - 16-bit depth (5:6:5) */
146static void putpixel_2byte(unsigned int x, unsigned int y, int color)
147{
148 /* 5-bit, 6-bits, 5-bits */
149 *((__u16 *)(screen.fbaddress + POINTPOS(x, y))) = RED(color, 5) << 11 | GREEN(color, 6) << 5 | BLUE(color, 5);
150}
151
152/** Return pixel color - 16-bit depth (5:6:5) */
153static int getpixel_2byte(unsigned int x, unsigned int y)
154{
155 int color = *((__u16 *)(screen.fbaddress + POINTPOS(x, y)));
156 return (((color >> 11) & 0x1f) << (16 + 3)) | (((color >> 5) & 0x3f) << (8 + 2)) | ((color & 0x1f) << 3);
157}
158
159/** Put pixel - 8-bit depth (3:2:3) */
160static void putpixel_1byte(unsigned int x, unsigned int y, int color)
161{
162 screen.fbaddress[POINTPOS(x, y)] = RED(color, 3) << 5 | GREEN(color, 2) << 3 | BLUE(color, 3);
163}
164
165/** Return pixel color - 8-bit depth (3:2:3) */
166static int getpixel_1byte(unsigned int x, unsigned int y)
167{
168 int color = screen.fbaddress[POINTPOS(x, y)];
169 return (((color >> 5) & 0x7) << (16 + 5)) | (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
170}
171
172/** Put pixel into viewport
173 *
174 * @param vp Viewport identification
175 * @param x X coord relative to viewport
176 * @param y Y coord relative to viewport
177 * @param color RGB color
178 */
179static void putpixel(int vp, unsigned int x, unsigned int y, int color)
180{
181 screen.putpixel(viewports[vp].x + x, viewports[vp].y + y, color);
182}
183/** Get pixel from viewport */
184static int getpixel(int vp, unsigned int x, unsigned int y)
185{
186 return screen.getpixel(viewports[vp].x + x, viewports[vp].y + y);
187}
188
189/** Fill line with color BGCOLOR */
190static void clear_line(int vp, unsigned int y)
191{
192 unsigned int x;
193 for (x = 0; x < viewports[vp].width; x++)
194 putpixel(vp, x, y, viewports[vp].bgcolor);
195}
196
197/** Fill viewport with background color */
198static void clear_port(int vp)
199{
200 unsigned int y;
201
202 clear_line(vp, 0);
203 for (y = viewports[vp].y+1; y < viewports[vp].y+viewports[vp].height; y++) {
204 memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
205 &screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y)],
206 screen.pixelbytes * viewports[vp].width);
207 }
208}
209
210/** Scroll port up/down
211 *
212 * @param vp Viewport to scroll
213 * @param rows Positive number - scroll up, negative - scroll down
214 */
215static void scroll_port(int vp, int rows)
216{
217 int y;
218 int startline;
219 int endline;
220
221 if (rows > 0) {
222 for (y=viewports[vp].y; y < viewports[vp].y+viewports[vp].height - rows*FONT_SCANLINES; y++)
223 memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
224 &screen.fbaddress[POINTPOS(viewports[vp].x,y + rows*FONT_SCANLINES)],
225 screen.pixelbytes * viewports[vp].width);
226 /* Clear last row */
227 startline = viewports[vp].y+FONT_SCANLINES*(viewports[vp].rows-1);
228 endline = viewports[vp].y + viewports[vp].height;
229 clear_line(vp, startline);
230 for (y=startline+1;y < endline; y++)
231 memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
232 &screen.fbaddress[POINTPOS(viewports[vp].x,startline)],
233 screen.pixelbytes * viewports[vp].width);
234
235 } else if (rows < 0) {
236 rows = -rows;
237 for (y=viewports[vp].y + viewports[vp].height-1; y >= viewports[vp].y + rows*FONT_SCANLINES; y--)
238 memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
239 &screen.fbaddress[POINTPOS(viewports[vp].x,y - rows*FONT_SCANLINES)],
240 screen.pixelbytes * viewports[vp].width);
241 /* Clear first row */
242 clear_line(0, viewports[vp].bgcolor);
243 for (y=1;y < rows*FONT_SCANLINES; y++)
244 memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y+y)],
245 &screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y)],
246 screen.pixelbytes * viewports[vp].width);
247 }
248}
249
250static void invert_pixel(int vp,unsigned int x, unsigned int y)
251{
252 putpixel(vp, x, y, ~getpixel(vp, x, y));
253}
254
255
256/** Draw one line of glyph at a given position */
257static void draw_glyph_line(int vp,unsigned int glline, unsigned int x, unsigned int y)
258{
259 unsigned int i;
260
261 for (i = 0; i < 8; i++)
262 if (glline & (1 << (7 - i))) {
263 putpixel(vp, x + i, y, viewports[vp].fgcolor);
264 } else
265 putpixel(vp, x + i, y, viewports[vp].bgcolor);
266}
267
268/***************************************************************/
269/* Character-console functions */
270
271/** Draw character at given position */
272static void draw_glyph(int vp,__u8 glyph, unsigned int sx, unsigned int sy)
273{
274 unsigned int y;
275
276 for (y = 0; y < FONT_SCANLINES; y++)
277 draw_glyph_line(vp ,fb_font[glyph * FONT_SCANLINES + y], sx, sy + y);
278}
279
280/** Invert character at given position */
281static void invert_char(int vp,unsigned int row, unsigned int col)
282{
283 unsigned int x;
284 unsigned int y;
285
286 for (x = 0; x < COL_WIDTH; x++)
287 for (y = 0; y < FONT_SCANLINES; y++)
288 invert_pixel(vp, col * COL_WIDTH + x, row * FONT_SCANLINES + y);
289}
290
291static void draw_logo(int vp,unsigned int startx, unsigned int starty)
292{
293 unsigned int x;
294 unsigned int y;
295 unsigned int byte;
296 unsigned int rowbytes;
297
298 rowbytes = (helenos_width - 1) / 8 + 1;
299
300 for (y = 0; y < helenos_height; y++)
301 for (x = 0; x < helenos_width; x++) {
302 byte = helenos_bits[rowbytes * y + x / 8];
303 byte >>= x % 8;
304 if (byte & 1)
305 putpixel(vp ,startx + x, starty + y, viewports[vp].fgcolor);
306 }
307}
308
309/***************************************************************/
310/* Stdout specific functions */
311
312
313/** Create new viewport
314 *
315 * @return New viewport number
316 */
317static int viewport_create(unsigned int x, unsigned int y,unsigned int width,
318 unsigned int height)
319{
320 int i;
321
322for (i=0; i < MAX_VIEWPORTS; i++) {
323 if (!viewports[i].initialized)
324 break;
325 }
326 if (i == MAX_VIEWPORTS)
327 return ELIMIT;
328
329 if (width ==0 || height == 0 ||
330 x+width > screen.xres || y+height > screen.yres)
331 return EINVAL;
332 if (width < FONT_SCANLINES || height < COL_WIDTH)
333 return EINVAL;
334
335 viewports[i].x = x;
336 viewports[i].y = y;
337 viewports[i].width = width;
338 viewports[i].height = height;
339
340 viewports[i].rows = height / FONT_SCANLINES;
341 viewports[i].cols = width / COL_WIDTH;
342
343 viewports[i].bgcolor = DEFAULT_BGCOLOR;
344 viewports[i].fgcolor = DEFAULT_FGCOLOR;
345
346 viewports[i].cur_col = 0;
347 viewports[i].cur_row = 0;
348 viewports[i].cursor_active = 0;
349
350 viewports[i].initialized = 1;
351
352 return i;
353}
354
355
356/** Initialize framebuffer as a chardev output device
357 *
358 * @param addr Address of theframebuffer
359 * @param x Screen width in pixels
360 * @param y Screen height in pixels
361 * @param bpp Bits per pixel (8, 16, 24, 32)
362 * @param scan Bytes per one scanline
363 *
364 */
365static void screen_init(void *addr, unsigned int xres, unsigned int yres, unsigned int bpp, unsigned int scan)
366{
367 switch (bpp) {
368 case 8:
369 screen.putpixel = putpixel_1byte;
370 screen.getpixel = getpixel_1byte;
371 screen.pixelbytes = 1;
372 break;
373 case 16:
374 screen.putpixel = putpixel_2byte;
375 screen.getpixel = getpixel_2byte;
376 screen.pixelbytes = 2;
377 break;
378 case 24:
379 screen.putpixel = putpixel_3byte;
380 screen.getpixel = getpixel_3byte;
381 screen.pixelbytes = 3;
382 break;
383 case 32:
384 screen.putpixel = putpixel_4byte;
385 screen.getpixel = getpixel_4byte;
386 screen.pixelbytes = 4;
387 break;
388 }
389
390
391 screen.fbaddress = (unsigned char *) addr;
392 screen.xres = xres;
393 screen.yres = yres;
394 screen.scanline = scan;
395
396 /* Create first viewport */
397 viewport_create(0,0,xres,yres);
398
399 clear_port(0);
400}
401
402static void cursor_hide(int vp)
403{
404 viewport_t *vport = &viewports[vp];
405
406 if (vport->cursor_active && vport->cursor_shown) {
407 invert_char(vp, vport->cur_row, vport->cur_col);
408 vport->cursor_shown = 0;
409 }
410}
411
412static void cursor_print(int vp)
413{
414 viewport_t *vport = &viewports[vp];
415
416 /* Do not check for cursor_shown */
417 if (vport->cursor_active) {
418 invert_char(vp, vport->cur_row, vport->cur_col);
419 vport->cursor_shown = 1;
420 }
421}
422
423static void cursor_blink(int vp)
424{
425 viewport_t *vport = &viewports[vp];
426
427 if (vport->cursor_shown)
428 cursor_hide(vp);
429 else
430 cursor_print(vp);
431}
432
433/** Draw character at given position relative to viewport
434 *
435 * @param vp Viewport identification
436 * @param c Character to print
437 * @param row Screen position relative to viewport
438 * @param col Screen position relative to viewport
439 */
440static void draw_char(int vp, char c, unsigned int row, unsigned int col)
441{
442 viewport_t *vport = &viewports[vp];
443
444 /* Optimize - do not hide cursor if we are going to overwrite it */
445 if (vport->cursor_active && vport->cursor_shown &&
446 (vport->cur_col != col || vport->cur_row != row))
447 invert_char(vp, vport->cur_row, vport->cur_col);
448
449 draw_glyph(vp, c, col * COL_WIDTH, row * FONT_SCANLINES);
450
451 vport->cur_col = col;
452 vport->cur_row = row;
453
454 vport->cur_col++;
455 if (vport->cur_col>= vport->cols) {
456 vport->cur_col = 0;
457 vport->cur_row++;
458 if (vport->cur_row >= vport->rows)
459 vport->cur_row--;
460 }
461 cursor_print(vp);
462}
463
464static void draw_text_data(int vp, keyfield_t *data)
465{
466 viewport_t *vport = &viewports[vp];
467 int i;
468 char c;
469
470 clear_port(vp);
471 for (i=0; i < vport->cols * vport->rows; i++) {
472 if (data[i].character == ' ') /* TODO: && data[i].style==vport->style */
473 continue;
474 draw_char(vp, data[i].character, i/vport->rows, i % vport->cols);
475 }
476 cursor_print(vp);
477}
478
479
480/** Function for handling connections to FB
481 *
482 */
483static void fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
484{
485 ipc_callid_t callid;
486 ipc_call_t call;
487 int retval;
488 int i;
489 unsigned int row,col;
490 char c;
491 keyfield_t *interbuffer = NULL;
492 size_t intersize = 0;
493
494 int vp = 0;
495 viewport_t *vport = &viewports[0];
496
497 if (client_connected) {
498 ipc_answer_fast(iid, ELIMIT, 0,0);
499 return;
500 }
501 client_connected = 1;
502 ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
503
504 while (1) {
505 callid = async_get_call_timeout(&call,250000);
506 if (!callid) {
507 cursor_blink(vp);
508 continue;
509 }
510 switch (IPC_GET_METHOD(call)) {
511 case IPC_M_PHONE_HUNGUP:
512 client_connected = 0;
513 /* cleanup other viewports */
514 for (i=1; i < MAX_VIEWPORTS; i++)
515 vport->initialized = 0;
516 ipc_answer_fast(callid,0,0,0);
517 return; /* Exit thread */
518 case IPC_M_AS_AREA_SEND:
519 /* We accept one area for data interchange */
520 intersize = IPC_GET_ARG2(call);
521 receive_comm_area(callid,&call,(void **)&interbuffer,
522 sizeof(*interbuffer)*viewports[0].cols*viewports[0].rows);
523 continue;
524
525 case FB_DRAW_TEXT_DATA:
526 if (!interbuffer) {
527 retval = EINVAL;
528 break;
529 }
530 if (intersize < vport->cols*vport->rows*sizeof(*interbuffer)) {
531 retval = EINVAL;
532 break;
533 }
534 draw_text_data(vp, interbuffer);
535 retval = 0;
536 break;
537 case FB_PUTCHAR:
538 c = IPC_GET_ARG1(call);
539 row = IPC_GET_ARG2(call);
540 col = IPC_GET_ARG3(call);
541 if (row >= vport->rows || col >= vport->cols) {
542 retval = EINVAL;
543 break;
544 }
545 ipc_answer_fast(callid,0,0,0);
546
547 draw_char(vp, c, row, col);
548 continue; /* msg already answered */
549 case FB_CLEAR:
550 clear_port(vp);
551 cursor_print(vp);
552 retval = 0;
553 break;
554 case FB_CURSOR_GOTO:
555 row = IPC_GET_ARG1(call);
556 col = IPC_GET_ARG2(call);
557 if (row >= vport->rows || col >= vport->cols) {
558 retval = EINVAL;
559 break;
560 }
561 retval = 0;
562 cursor_hide(vp);
563 vport->cur_col = col;
564 vport->cur_row = row;
565 cursor_print(vp);
566 break;
567 case FB_CURSOR_VISIBILITY:
568 cursor_hide(vp);
569 vport->cursor_active = IPC_GET_ARG1(call);
570 cursor_print(vp);
571 retval = 0;
572 break;
573 case FB_GET_CSIZE:
574 ipc_answer_fast(callid, 0, vport->rows, vport->cols);
575 continue;
576 case FB_SCROLL:
577 i = IPC_GET_ARG1(call);
578 if (i > vport->rows || i < (- (int)vport->rows)) {
579 retval = EINVAL;
580 break;
581 }
582 cursor_hide(vp);
583 scroll_port(vp, i);
584 cursor_print(vp);
585 retval = 0;
586 break;
587 case FB_VIEWPORT_SWITCH:
588 i = IPC_GET_ARG1(call);
589 if (i < 0 || i >= MAX_VIEWPORTS) {
590 retval = EINVAL;
591 break;
592 }
593 if (! viewports[i].initialized ) {
594 retval = EADDRNOTAVAIL;
595 break;
596 }
597 cursor_hide(vp);
598 vp = i;
599 vport = &viewports[vp];
600 cursor_print(vp);
601 retval = 0;
602 break;
603 case FB_VIEWPORT_CREATE:
604 retval = viewport_create(IPC_GET_ARG1(call) >> 16,
605 IPC_GET_ARG1(call) & 0xffff,
606 IPC_GET_ARG2(call) >> 16,
607 IPC_GET_ARG2(call) & 0xffff);
608 break;
609 case FB_VIEWPORT_DELETE:
610 i = IPC_GET_ARG1(call);
611 if (i < 0 || i >= MAX_VIEWPORTS) {
612 retval = EINVAL;
613 break;
614 }
615 if (! viewports[i].initialized ) {
616 retval = EADDRNOTAVAIL;
617 break;
618 }
619 viewports[i].initialized = 0;
620 retval = 0;
621 break;
622 case FB_SET_STYLE:
623 vport->fgcolor = IPC_GET_ARG1(call);
624 vport->bgcolor = IPC_GET_ARG2(call);
625 retval = 0;
626 break;
627 case FB_GET_RESOLUTION:
628 ipc_answer_fast(callid, 0, screen.xres,screen.yres);
629 continue;
630 default:
631 retval = ENOENT;
632 }
633 ipc_answer_fast(callid,retval,0,0);
634 }
635}
636
637/** Initialization of framebuffer */
638int fb_init(void)
639{
640 void *fb_ph_addr;
641 unsigned int fb_width;
642 unsigned int fb_height;
643 unsigned int fb_bpp;
644 unsigned int fb_scanline;
645 void *fb_addr;
646 size_t asz;
647
648 async_set_client_connection(fb_client_connection);
649
650 fb_ph_addr=(void *)sysinfo_value("fb.address.physical");
651 fb_width=sysinfo_value("fb.width");
652 fb_height=sysinfo_value("fb.height");
653 fb_bpp=sysinfo_value("fb.bpp");
654 fb_scanline=sysinfo_value("fb.scanline");
655
656 asz = fb_scanline*fb_height;
657 fb_addr = as_get_mappable_page(asz);
658
659 map_physmem(fb_ph_addr, fb_addr, ALIGN_UP(asz,PAGE_SIZE) >>PAGE_WIDTH,
660 AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE);
661
662 screen_init(fb_addr, fb_width, fb_height, fb_bpp, fb_scanline);
663
664 return 0;
665}
666
Note: See TracBrowser for help on using the repository browser.