/[gxemul]/trunk/src/devices/dev_fb.c
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Contents of /trunk/src/devices/dev_fb.c

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Revision 12 - (show annotations)
Mon Oct 8 16:18:38 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 29442 byte(s) 
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.905 2005/08/16 09:16:24 debug Exp $
20050628	Continuing the work on the ARM translation engine. end_of_page
		works. Experimenting with load/store translation caches
		(virtual -> physical -> host).
20050629	More ARM stuff (memory access translation cache, mostly). This
		might break a lot of stuff elsewhere, probably some MIPS-
		related translation things.
20050630	Many load/stores are now automatically generated and included
		into cpu_arm_instr.c; 1024 functions in total (!).
		Fixes based on feedback from Alec Voropay: only print 8 hex
		digits instead of 16 in some cases when emulating 32-bit
		machines; similar 8 vs 16 digit fix for breakpoint addresses;
		4Kc has 16 TLB entries, not 48; the MIPS config select1
		register is now printed with "reg ,0".
		Also changing many other occurances of 16 vs 8 digit output.
		Adding cache associativity fields to mips_cpu_types.h; updating
		some other cache fields; making the output of
		mips_cpu_dumpinfo() look nicer.
		Generalizing the bintrans stuff for device accesses to also
		work with the new translation system. (This might also break
		some MIPS things.)
		Adding multi-load/store instructions to the ARM disassembler
		and the translator, and some optimizations of various kinds.
20050701	Adding a simple dev_disk (it can read/write sectors from
		disk images).
20050712	Adding dev_ether (a simple ethernet send/receive device).
		Debugger command "ninstrs" for toggling show_nr_of_instructions
		during runtime.
		Removing the framebuffer logo.
20050713	Continuing on dev_ether.
		Adding a dummy cpu_alpha (again).
20050714	More work on cpu_alpha.
20050715	More work on cpu_alpha. Many instructions work, enough to run
		a simple framebuffer fill test (similar to the ARM test).
20050716	More Alpha stuff.
20050717	Minor updates (Alpha stuff).
20050718	Minor updates (Alpha stuff).
20050719	Generalizing some Alpha instructions.
20050720	More Alpha-related updates.
20050721	Continuing on cpu_alpha. Importing rpb.h from NetBSD/alpha.
20050722	Alpha-related updates: userland stuff (Hello World using
		write() compiled statically for FreeBSD/Alpha runs fine), and
		more instructions are now implemented.
20050723	Fixing ldq_u and stq_u.
		Adding more instructions (conditional moves, masks, extracts,
		shifts).
20050724	More FreeBSD/Alpha userland stuff, and adding some more
		instructions (inserts).
20050725	Continuing on the Alpha stuff. (Adding dummy ldt/stt.)
		Adding a -A command line option to turn off alignment checks
		in some cases (for translated code).
		Trying to remove the old bintrans code which updated the pc
		and nr_of_executed_instructions for every instruction.
20050726	Making another attempt att removing the pc/nr of instructions
		code. This time it worked, huge performance increase for
		artificial test code, but performance loss for real-world
		code :-( so I'm scrapping that code for now.
		Tiny performance increase on Alpha (by using ret instead of
		jmp, to play nice with the Alpha's branch prediction) for the
		old MIPS bintrans backend.
20050727	Various minor fixes and cleanups.
20050728	Switching from a 2-level virtual to host/physical translation
		system for ARM emulation, to a 1-level translation.
		Trying to switch from 2-level to 1-level for the MIPS bintrans
		system as well (Alpha only, so far), but there is at least one
		problem: caches and/or how they work with device mappings.
20050730	Doing the 2-level to 1-level conversion for the i386 backend.
		The cache/device bug is still there for R2K/3K :(
		Various other minor updates (Malta etc).
		The mc146818 clock now updates the UIP bit in a way which works
		better with Linux for at least sgimips and Malta emulation.
		Beginning the work on refactoring the dyntrans system.
20050731	Continuing the dyntrans refactoring.
		Fixing a small but serious host alignment bug in memory_rw.
		Adding support for big-endian load/stores to the i386 bintrans
		backend.
		Another minor i386 bintrans backend update: stores from the
		zero register are now one (or two) loads shorter.
		The slt and sltu instructions were incorrectly implemented for
		the i386 backend; only using them for 32-bit mode for now.
20050801	Continuing the dyntrans refactoring.
		Cleanup of the ns16550 serial controller (removing unnecessary
		code).
		Bugfix (memory corruption bug) in dev_gt, and a patch/hack from
		Alec Voropay for Linux/Malta.
20050802	More cleanup/refactoring of the dyntrans subsystem: adding
		phys_page pointers to the lookup tables, for quick jumps
		between translated pages.
		Better fix for the ns16550 device (but still no real FIFO
		functionality).
		Converting cpu_ppc to the new dyntrans system. This means that
		I will have to start from scratch with implementing each
		instruction, and figure out how to implement dual 64/32-bit
		modes etc.
		Removing the URISC CPU family, because it was useless.
20050803	When selecting a machine type, the main type can now be omitted
		if the subtype name is unique. (I.e. -E can be omitted.)
		Fixing a dyntrans/device update bug. (Writes to offset 0 of
		a device could sometimes go unnoticed.)
		Adding an experimental "instruction combination" hack for
		ARM for memset-like byte fill loops.
20050804	Minor progress on cpu_alpha and related things.
		Finally fixing the MIPS dmult/dmultu bugs.
		Fixing some minor TODOs.
20050805	Generalizing the 8259 PIC. It now also works with Cobalt
		and evbmips emulation, in addition to the x86 hack.
		Finally converting the ns16550 device to use devinit.
		Continuing the work on the dyntrans system. Thinking about
		how to add breakpoints.
20050806	More dyntrans updates. Breakpoints seem to work now.
20050807	Minor updates: cpu_alpha and related things; removing
		dev_malta (as it isn't used any more).
		Dyntrans: working on general "show trace tree" support.
		The trace tree stuff now works with both the old MIPS code and
		with newer dyntrans modes. :)
		Continuing on Alpha-related stuff (trying to get *BSD to boot
		a bit further, adding more instructions, etc).
20050808	Adding a dummy IA64 cpu family, and continuing the refactoring
		of the dyntrans system.
		Removing the regression test stuff, because it was more or
		less useless.
		Adding loadlinked/storeconditional type instructions to the
		Alpha emulation. (Needed for Linux/alpha. Not very well tested
		yet.)
20050809	The function call trace tree now prints a per-function nr of
		arguments. (Semi-meaningless, since that data isn't read yet
		from the ELFs; some hardcoded symbols such as memcpy() and
		strlen() work fine, though.)
		More dyntrans refactoring; taking out more of the things that
		are common to all cpu families.
20050810	Working on adding support for "dual mode" for PPC dyntrans
		(i.e. both 64-bit and 32-bit modes).
		(Re)adding some simple PPC instructions.
20050811	Adding a dummy M68K cpu family. The dyntrans system isn't ready
		for variable-length ISAs yet, so it's completely bogus so far.
		Re-adding more PPC instructions.
		Adding a hack to src/file.c which allows OpenBSD/mac68k a.out
		kernels to be loaded.
		Beginning to add PPC loads/stores. So far they only work in
		32-bit mode.
20050812	The configure file option "add_remote" now accepts symbolic
		host names, in addition to numeric IPv4 addresses.
		Re-adding more PPC instructions.
20050814	Continuing to port back more PPC instructions.
		Found and fixed the cache/device write-update bug for 32-bit
		MIPS bintrans. :-)
		Triggered a really weird and annoying bug in Compaq's C
		compiler; ccc sometimes outputs code which loads from an
		address _before_ checking whether the pointer was NULL or not.
		(I'm not sure how to handle this problem.)
20050815	Removing all of the old x86 instruction execution code; adding
		a new (dummy) dyntrans module for x86.
		Taking the first steps to extend the dyntrans system to support
		variable-length instructions.
		Slowly preparing for the next release.
20050816	Adding a dummy SPARC cpu module.
		Minor updates (documentation etc) for the release.

==============  RELEASE 0.3.5  ==============
1 /*
2 * Copyright (C) 2003-2005 Anders Gavare. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *
28 * $Id: dev_fb.c,v 1.106 2005/08/14 11:14:38 debug Exp $
29 *
30 * Generic framebuffer device.
31 *
32 * DECstation VFB01 monochrome framebuffer, 1024x864
33 * DECstation VFB02 8-bit color framebuffer, 1024x864
34 * DECstation Maxine, 1024x768 8-bit color
35 * HPCmips framebuffer
36 * Playstation 2 (24-bit color)
37 * generic (any resolution, several bit depths possible)
38 *
39 *
40 * TODO: There is still a bug when redrawing the cursor. The underlying
41 * image is moved 1 pixel (?), or something like that.
42 *
43 * TODO: This should actually be independant of X11, but that
44 * might be too hard to do right now.
45 *
46 * TODO: playstation 2 pixels are stored in another format, actually
47 */
48
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52
53 #include "console.h"
54 #include "cpu.h"
55 #include "devices.h"
56 #include "machine.h"
57 #include "memory.h"
58 #include "misc.h"
59 #include "x11.h"
60
61 #ifdef WITH_X11
62 #include <X11/Xlib.h>
63 #include <X11/Xos.h>
64 #include <X11/Xutil.h>
65 #endif
66
67
68 #define FB_TICK_SHIFT 19
69
70
71 /* #define FB_DEBUG */
72
73 /*
74 * set_grayscale_palette():
75 *
76 * Fill d->rgb_palette with grayscale values. ncolors should
77 * be something like 2, 4, 16, or 256.
78 */
79 void set_grayscale_palette(struct vfb_data *d, int ncolors)
80 {
81 int i, gray;
82
83 for (i=0; i<256; i++) {
84 gray = 255*i/(ncolors-1);
85 d->rgb_palette[i*3 + 0] = gray;
86 d->rgb_palette[i*3 + 1] = gray;
87 d->rgb_palette[i*3 + 2] = gray;
88 }
89 }
90
91
92 /*
93 * set_blackwhite_palette():
94 *
95 * Set color 0 = black, all others to white.
96 */
97 void set_blackwhite_palette(struct vfb_data *d, int ncolors)
98 {
99 int i, gray;
100
101 for (i=0; i<256; i++) {
102 gray = i==0? 0 : 255;
103 d->rgb_palette[i*3 + 0] = gray;
104 d->rgb_palette[i*3 + 1] = gray;
105 d->rgb_palette[i*3 + 2] = gray;
106 }
107 }
108
109
110 /*
111 * dev_fb_resize():
112 *
113 * Resize a framebuffer window. (This functionality is probably a bit buggy,
114 * because I didn't think of including it from the start.)
115 */
116 void dev_fb_resize(struct vfb_data *d, int new_xsize, int new_ysize)
117 {
118 unsigned char *new_framebuffer;
119 int y, new_bytes_per_line;
120 size_t size;
121
122 if (d == NULL) {
123 fatal("dev_fb_resize(): d == NULL\n");
124 return;
125 }
126
127 new_bytes_per_line = new_xsize * d->bit_depth / 8;
128 size = new_ysize * new_bytes_per_line;
129
130 new_framebuffer = malloc(size);
131 if (new_framebuffer == NULL) {
132 fprintf(stderr, "dev_fb_resize(): out of memory\n");
133 exit(1);
134 }
135
136 /* Copy the old framebuffer to the new: */
137 if (d->framebuffer != NULL) {
138 for (y=0; y<new_ysize; y++) {
139 size_t fromofs = d->bytes_per_line * y;
140 size_t toofs = new_bytes_per_line * y;
141 size_t len_to_copy = d->bytes_per_line <
142 new_bytes_per_line? d->bytes_per_line
143 : new_bytes_per_line;
144 memset(new_framebuffer + toofs, 0, new_bytes_per_line);
145 if (y < d->x11_ysize)
146 memmove(new_framebuffer + toofs,
147 d->framebuffer + fromofs, len_to_copy);
148 }
149
150 free(d->framebuffer);
151 }
152
153 d->framebuffer = new_framebuffer;
154 d->framebuffer_size = size;
155
156 if (new_xsize > d->x11_xsize || new_ysize > d->x11_ysize) {
157 d->update_x1 = d->update_y1 = 0;
158 d->update_x2 = new_xsize - 1;
159 d->update_y2 = new_ysize - 1;
160 }
161
162 d->bytes_per_line = new_bytes_per_line;
163 d->x11_xsize = d->visible_xsize = new_xsize;
164 d->x11_ysize = d->visible_ysize = new_ysize;
165
166 #ifdef WITH_X11
167 if (d->fb_window != NULL)
168 x11_fb_resize(d->fb_window, new_xsize, new_ysize);
169 #endif
170 }
171
172
173 /*
174 * dev_fb_setcursor():
175 */
176 void dev_fb_setcursor(struct vfb_data *d, int cursor_x, int cursor_y, int on,
177 int cursor_xsize, int cursor_ysize)
178 {
179 if (cursor_x < 0)
180 cursor_x = 0;
181 if (cursor_y < 0)
182 cursor_y = 0;
183 if (cursor_x + cursor_xsize >= d->xsize)
184 cursor_x = d->xsize - cursor_xsize;
185 if (cursor_y + cursor_ysize >= d->ysize)
186 cursor_y = d->ysize - cursor_ysize;
187
188 #ifdef WITH_X11
189 if (d->fb_window != NULL) {
190 d->fb_window->cursor_x = cursor_x;
191 d->fb_window->cursor_y = cursor_y;
192 d->fb_window->cursor_on = on;
193 d->fb_window->cursor_xsize = cursor_xsize;
194 d->fb_window->cursor_ysize = cursor_ysize;
195 }
196 #endif
197
198 if (d->fb_window != NULL)
199 console_set_framebuffer_mouse(cursor_x, cursor_y,
200 d->fb_window->fb_number);
201
202 /* debug("dev_fb_setcursor(%i,%i, size %i,%i, on=%i)\n",
203 cursor_x, cursor_y, cursor_xsize, cursor_ysize, on); */
204 }
205
206
207 /*
208 * framebuffer_blockcopyfill():
209 *
210 * This function should be used by devices that are capable of doing
211 * block copy/fill.
212 *
213 * If fillflag is non-zero, then fill_[rgb] should contain the color
214 * with which to fill.
215 *
216 * If fillflag is zero, copy mode is used, and from_[xy] should contain
217 * the offset on the framebuffer where we should copy from.
218 *
219 * NOTE: Overlapping copies are undefined!
220 */
221 void framebuffer_blockcopyfill(struct vfb_data *d, int fillflag, int fill_r,
222 int fill_g, int fill_b, int x1, int y1, int x2, int y2,
223 int from_x, int from_y)
224 {
225 int y;
226 long from_ofs, dest_ofs, linelen;
227
228 if (fillflag)
229 debug("framebuffer_blockcopyfill(FILL, %i,%i, %i,%i, "
230 "color %i,%i,%i)\n", x1,y1, x2,y2, fill_r, fill_g, fill_b);
231 else
232 debug("framebuffer_blockcopyfill(COPY, %i,%i, %i,%i, from "
233 "%i,%i)\n", x1,y1, x2,y2, from_x,from_y);
234
235 /* Clip x: */
236 if (x1 < 0) x1 = 0;
237 if (x1 >= d->xsize) x1 = d->xsize-1;
238 if (x2 < 0) x2 = 0;
239 if (x2 >= d->xsize) x2 = d->xsize-1;
240
241 dest_ofs = d->bytes_per_line * y1 + (d->bit_depth/8) * x1;
242 linelen = (x2-x1 + 1) * (d->bit_depth/8);
243 /* NOTE: linelen is nr of bytes, not pixels */
244
245 if (fillflag) {
246 for (y=y1; y<=y2; y++) {
247 if (y>=0 && y<d->ysize) {
248 int x;
249 char buf[8192 * 3];
250 if (d->bit_depth == 24)
251 for (x=0; x<linelen; x+=3) {
252 buf[x] = fill_r;
253 buf[x+1] = fill_g;
254 buf[x+2] = fill_b;
255 }
256 else
257 printf("TODO: fill for non-24-bit"
258 " modes\n");
259
260 memmove(d->framebuffer + dest_ofs, buf,
261 linelen);
262 }
263
264 dest_ofs += d->bytes_per_line;
265 }
266 } else {
267 from_ofs = d->bytes_per_line * from_y +
268 (d->bit_depth/8) * from_x;
269
270 for (y=y1; y<=y2; y++) {
271 if (y>=0 && y<d->ysize)
272 memmove(d->framebuffer + dest_ofs,
273 d->framebuffer + from_ofs, linelen);
274
275 from_ofs += d->bytes_per_line;
276 dest_ofs += d->bytes_per_line;
277 }
278 }
279
280 if (x1 < d->update_x1 || d->update_x1 == -1) d->update_x1 = x1;
281 if (x1 > d->update_x2 || d->update_x2 == -1) d->update_x2 = x1;
282 if (x2 < d->update_x1 || d->update_x1 == -1) d->update_x1 = x2;
283 if (x2 > d->update_x2 || d->update_x2 == -1) d->update_x2 = x2;
284
285 if (y1 < d->update_y1 || d->update_y1 == -1) d->update_y1 = y1;
286 if (y1 > d->update_y2 || d->update_y2 == -1) d->update_y2 = y1;
287 if (y2 < d->update_y1 || d->update_y1 == -1) d->update_y1 = y2;
288 if (y2 > d->update_y2 || d->update_y2 == -1) d->update_y2 = y2;
289 }
290
291
292 #ifdef WITH_X11
293 #define macro_put_pixel() { \
294 /* Combine the color into an X11 long and display it: */ \
295 /* TODO: construct color in a more portable way: */ \
296 switch (d->fb_window->x11_screen_depth) { \
297 case 24: \
298 if (d->fb_window->fb_ximage->byte_order) \
299 color = (b << 16) + (g << 8) + r; \
300 else \
301 color = (r << 16) + (g << 8) + b; \
302 break; \
303 case 16: \
304 r >>= 3; g >>= 2; b >>= 3; \
305 if (d->fb_window->fb_ximage->byte_order) { \
306 /* Big endian 16-bit X server: */ \
307 static int first = 1; \
308 if (first) { \
309 fprintf(stderr, "\n*** Please report to the author whether 16-bit X11 colors are rendered correctly or not!\n\n"); \
310 first = 0; \
311 } \
312 color = (b << 11) + (g << 5) + r; \
313 } else { \
314 /* Little endian (eg PC) X servers: */ \
315 color = (r << 11) + (g << 5) + b; \
316 } \
317 break; \
318 case 15: \
319 r >>= 3; g >>= 3; b >>= 3; \
320 if (d->fb_window->fb_ximage->byte_order) { \
321 /* Big endian 15-bit X server: */ \
322 static int first = 1; \
323 if (first) { \
324 fprintf(stderr, "\n*** Please report to the author whether 15-bit X11 colors are rendered correctly or not!\n\n"); \
325 first = 0; \
326 } \
327 color = (b << 10) + (g << 5) + r; \
328 } else { \
329 /* Little endian (eg PC) X servers: */ \
330 color = (r << 10) + (g << 5) + b; \
331 } \
332 break; \
333 default: \
334 color = d->fb_window->x11_graycolor[15 * (r + g + b) / (255 * 3)].pixel; \
335 } \
336 if (x>=0 && x<d->x11_xsize && y>=0 && y<d->x11_ysize) \
337 XPutPixel(d->fb_window->fb_ximage, x, y, color); \
338 }
339 #else
340 /* If not WITH_X11: */
341 #define macro_put_pixel() { }
342 #endif
343
344
345 /*
346 * update_framebuffer():
347 *
348 * The framebuffer memory has been updated. This function tries to make
349 * sure that the XImage is also updated (1 or more pixels).
350 */
351 void update_framebuffer(struct vfb_data *d, int addr, int len)
352 {
353 int x, y, pixel, npixels;
354 long color_r, color_g, color_b;
355 #ifdef WITH_X11
356 long color;
357 #endif
358 int scaledown = d->vfb_scaledown;
359 int scaledownXscaledown = 1;
360
361 if (scaledown == 1) {
362 /* Which framebuffer pixel does addr correspond to? */
363 pixel = addr * 8 / d->bit_depth;
364 y = pixel / d->xsize;
365 x = pixel % d->xsize;
366
367 /* How many framebuffer pixels? */
368 npixels = len * 8 / d->bit_depth;
369 if (npixels == 0)
370 npixels = 1;
371
372 if (d->bit_depth < 8) {
373 for (pixel=0; pixel<npixels; pixel++) {
374 int fb_addr, c, r, g, b;
375 color_r = color_g = color_b = 0;
376
377 fb_addr = (y * d->xsize + x) * d->bit_depth;
378 /* fb_addr is now which _bit_ in
379 the framebuffer */
380
381 c = d->framebuffer[fb_addr >> 3];
382 fb_addr &= 7;
383
384 /* HPCmips is reverse: */
385 if (d->vfb_type == VFB_HPCMIPS)
386 fb_addr = 8 - d->bit_depth - fb_addr;
387
388 c = (c >> fb_addr) & ((1<<d->bit_depth) - 1);
389 /* c <<= (8 - d->bit_depth); */
390
391 r = d->rgb_palette[c*3 + 0];
392 g = d->rgb_palette[c*3 + 1];
393 b = d->rgb_palette[c*3 + 2];
394
395 macro_put_pixel();
396 x++;
397 }
398 } else if (d->bit_depth == 8) {
399 for (pixel=0; pixel<npixels; pixel++) {
400 int fb_addr, c, r, g, b;
401 color_r = color_g = color_b = 0;
402
403 fb_addr = y * d->xsize + x;
404 /* fb_addr is now which byte in framebuffer */
405 c = d->framebuffer[fb_addr];
406 r = d->rgb_palette[c*3 + 0];
407 g = d->rgb_palette[c*3 + 1];
408 b = d->rgb_palette[c*3 + 2];
409
410 macro_put_pixel();
411 x++;
412 }
413 } else { /* d->bit_depth > 8 */
414 for (pixel=0; pixel<npixels; pixel++) {
415 int fb_addr, r, g, b;
416 color_r = color_g = color_b = 0;
417
418 fb_addr = (y * d->xsize + x) * d->bit_depth;
419 /* fb_addr is now which byte in framebuffer */
420
421 /* > 8 bits color. */
422 fb_addr >>= 3;
423 switch (d->bit_depth) {
424 case 24:
425 r = d->framebuffer[fb_addr];
426 g = d->framebuffer[fb_addr + 1];
427 b = d->framebuffer[fb_addr + 2];
428 break;
429 /* TODO: copy to the scaledown code below */
430 case 16:
431 if (d->vfb_type == VFB_HPCMIPS) {
432 b = d->framebuffer[fb_addr] +
433 (d->framebuffer[fb_addr+1] << 8);
434
435 if (d->color32k) {
436 r = b >> 11;
437 g = b >> 5;
438 r = r & 31;
439 g = (g & 31) * 2;
440 b = b & 31;
441 } else if (d->psp_15bit) {
442 int tmp;
443 r = (b >> 10) & 0x1f;
444 g = (b >> 5) & 0x1f;
445 b = b & 0x1f;
446 g <<= 1;
447 tmp = r; r = b; b = tmp;
448 } else {
449 r = (b >> 11) & 0x1f;
450 g = (b >> 5) & 0x3f;
451 b = b & 0x1f;
452 }
453 } else {
454 r = d->framebuffer[fb_addr] >> 3;
455 g = (d->framebuffer[fb_addr] << 5) +
456 (d->framebuffer[fb_addr + 1] >> 5);
457 b = d->framebuffer[fb_addr + 1] & 0x1f;
458 }
459
460 r *= 8;
461 g *= 4;
462 b *= 8;
463 break;
464 default:
465 r = g = b = random() & 255;
466 }
467
468 macro_put_pixel();
469 x++;
470 }
471 }
472
473 return;
474 }
475
476 /* scaledown > 1: */
477
478 scaledown = d->vfb_scaledown;
479 scaledownXscaledown = scaledown * scaledown;
480
481 /* Which framebuffer pixel does addr correspond to? */
482 pixel = addr * 8 / d->bit_depth;
483 y = pixel / d->xsize;
484 x = pixel % d->xsize;
485
486 /* How many framebuffer pixels? */
487 npixels = len * 8 / d->bit_depth;
488
489 /* Which x11 pixel? */
490 x /= scaledown;
491 y /= scaledown;
492
493 /* How many x11 pixels: */
494 npixels /= scaledown;
495 if (npixels == 0)
496 npixels = 1;
497
498 if (d->bit_depth < 8) {
499 for (pixel=0; pixel<npixels; pixel++) {
500 int subx, suby, r, g, b;
501 color_r = color_g = color_b = 0;
502 for (suby=0; suby<scaledown; suby++)
503 for (subx=0; subx<scaledown; subx++) {
504 int fb_x, fb_y, fb_addr, c;
505
506 fb_x = x * scaledown + subx;
507 fb_y = y * scaledown + suby;
508 fb_addr = fb_y * d->xsize + fb_x;
509 fb_addr = fb_addr * d->bit_depth;
510 /* fb_addr is now which _bit_ in
511 the framebuffer */
512
513 c = d->framebuffer[fb_addr >> 3];
514 fb_addr &= 7;
515
516 /* HPCmips is reverse: */
517 if (d->vfb_type == VFB_HPCMIPS)
518 fb_addr = 8 - d->bit_depth - fb_addr;
519
520 c = (c >> fb_addr) & ((1<<d->bit_depth) - 1);
521 /* c <<= (8 - d->bit_depth); */
522
523 r = d->rgb_palette[c*3 + 0];
524 g = d->rgb_palette[c*3 + 1];
525 b = d->rgb_palette[c*3 + 2];
526
527 color_r += r;
528 color_g += g;
529 color_b += b;
530 }
531
532 r = color_r / scaledownXscaledown;
533 g = color_g / scaledownXscaledown;
534 b = color_b / scaledownXscaledown;
535 macro_put_pixel();
536 x++;
537 }
538 } else if (d->bit_depth == 8) {
539 for (pixel=0; pixel<npixels; pixel++) {
540 int subx, suby, r, g, b;
541 color_r = color_g = color_b = 0;
542 for (suby=0; suby<scaledown; suby++)
543 for (subx=0; subx<scaledown; subx++) {
544 int fb_x, fb_y, fb_addr, c;
545
546 fb_x = x * scaledown + subx;
547 fb_y = y * scaledown + suby;
548 fb_addr = fb_y * d->xsize + fb_x;
549 /* fb_addr is which _byte_ in framebuffer */
550 c = d->framebuffer[fb_addr] * 3;
551 r = d->rgb_palette[c + 0];
552 g = d->rgb_palette[c + 1];
553 b = d->rgb_palette[c + 2];
554 color_r += r;
555 color_g += g;
556 color_b += b;
557 }
558
559 r = color_r / scaledownXscaledown;
560 g = color_g / scaledownXscaledown;
561 b = color_b / scaledownXscaledown;
562 macro_put_pixel();
563 x++;
564 }
565 } else {
566 /* Generic > 8 bit bit-depth: */
567 for (pixel=0; pixel<npixels; pixel++) {
568 int subx, suby, r, g, b;
569 color_r = color_g = color_b = 0;
570 for (suby=0; suby<scaledown; suby++)
571 for (subx=0; subx<scaledown; subx++) {
572 int fb_x, fb_y, fb_addr;
573
574 fb_x = x * scaledown + subx;
575 fb_y = y * scaledown + suby;
576 fb_addr = fb_y * d->xsize + fb_x;
577 fb_addr = (fb_addr * d->bit_depth) >> 3;
578 /* fb_addr is which _byte_ in framebuffer */
579
580 /* > 8 bits color. */
581 switch (d->bit_depth) {
582 case 24:
583 r = d->framebuffer[fb_addr];
584 g = d->framebuffer[fb_addr + 1];
585 b = d->framebuffer[fb_addr + 2];
586 break;
587 default:
588 r = g = b = random() & 255;
589 }
590 color_r += r;
591 color_g += g;
592 color_b += b;
593 }
594 r = color_r / scaledownXscaledown;
595 g = color_g / scaledownXscaledown;
596 b = color_b / scaledownXscaledown;
597 macro_put_pixel();
598 x++;
599 }
600 }
601 }
602
603
604 /*
605 * dev_fb_tick():
606 *
607 */
608 void dev_fb_tick(struct cpu *cpu, void *extra)
609 {
610 struct vfb_data *d = extra;
611 #ifdef WITH_X11
612 int need_to_flush_x11 = 0;
613 int need_to_redraw_cursor = 0;
614 #endif
615
616 if (!cpu->machine->use_x11)
617 return;
618
619 do {
620 uint64_t high, low = (uint64_t)(int64_t) -1;
621 int x, y;
622
623 memory_device_dyntrans_access(cpu, cpu->mem,
624 extra, &low, &high);
625 if ((int64_t)low == -1)
626 break;
627
628 /* printf("low=%016llx high=%016llx\n",
629 (long long)low, (long long)high); */
630
631 x = (low % d->bytes_per_line) * 8 / d->bit_depth;
632 y = low / d->bytes_per_line;
633 if (x < d->update_x1 || d->update_x1 == -1)
634 d->update_x1 = x;
635 if (x > d->update_x2 || d->update_x2 == -1)
636 d->update_x2 = x;
637 if (y < d->update_y1 || d->update_y1 == -1)
638 d->update_y1 = y;
639 if (y > d->update_y2 || d->update_y2 == -1)
640 d->update_y2 = y;
641
642 x = ((low+7) % d->bytes_per_line) * 8 / d->bit_depth;
643 y = (low+7) / d->bytes_per_line;
644 if (x < d->update_x1 || d->update_x1 == -1)
645 d->update_x1 = x;
646 if (x > d->update_x2 || d->update_x2 == -1)
647 d->update_x2 = x;
648 if (y < d->update_y1 || d->update_y1 == -1)
649 d->update_y1 = y;
650 if (y > d->update_y2 || d->update_y2 == -1)
651 d->update_y2 = y;
652
653 x = (high % d->bytes_per_line) * 8 / d->bit_depth;
654 y = high / d->bytes_per_line;
655 if (x < d->update_x1 || d->update_x1 == -1)
656 d->update_x1 = x;
657 if (x > d->update_x2 || d->update_x2 == -1)
658 d->update_x2 = x;
659 if (y < d->update_y1 || d->update_y1 == -1)
660 d->update_y1 = y;
661 if (y > d->update_y2 || d->update_y2 == -1)
662 d->update_y2 = y;
663
664 x = ((high+7) % d->bytes_per_line) * 8 / d->bit_depth;
665 y = (high+7) / d->bytes_per_line;
666 if (x < d->update_x1 || d->update_x1 == -1)
667 d->update_x1 = x;
668 if (x > d->update_x2 || d->update_x2 == -1)
669 d->update_x2 = x;
670 if (y < d->update_y1 || d->update_y1 == -1)
671 d->update_y1 = y;
672 if (y > d->update_y2 || d->update_y2 == -1)
673 d->update_y2 = y;
674
675 /*
676 * An update covering more than one line will automatically
677 * force an update of all the affected lines:
678 */
679 if (d->update_y1 != d->update_y2) {
680 d->update_x1 = 0;
681 d->update_x2 = d->xsize-1;
682 }
683 } while (0);
684
685 #ifdef WITH_X11
686 /* Do we need to redraw the cursor? */
687 if (d->fb_window->cursor_on != d->fb_window->OLD_cursor_on ||
688 d->fb_window->cursor_x != d->fb_window->OLD_cursor_x ||
689 d->fb_window->cursor_y != d->fb_window->OLD_cursor_y ||
690 d->fb_window->cursor_xsize != d->fb_window->OLD_cursor_xsize ||
691 d->fb_window->cursor_ysize != d->fb_window->OLD_cursor_ysize)
692 need_to_redraw_cursor = 1;
693
694 if (d->update_x2 != -1) {
695 if ( (d->update_x1 >= d->fb_window->OLD_cursor_x &&
696 d->update_x1 < (d->fb_window->OLD_cursor_x + d->fb_window->OLD_cursor_xsize)) ||
697 (d->update_x2 >= d->fb_window->OLD_cursor_x &&
698 d->update_x2 < (d->fb_window->OLD_cursor_x + d->fb_window->OLD_cursor_xsize)) ||
699 (d->update_x1 < d->fb_window->OLD_cursor_x &&
700 d->update_x2 >= (d->fb_window->OLD_cursor_x + d->fb_window->OLD_cursor_xsize)) ) {
701 if ( (d->update_y1 >= d->fb_window->OLD_cursor_y &&
702 d->update_y1 < (d->fb_window->OLD_cursor_y + d->fb_window->OLD_cursor_ysize)) ||
703 (d->update_y2 >= d->fb_window->OLD_cursor_y &&
704 d->update_y2 < (d->fb_window->OLD_cursor_y + d->fb_window->OLD_cursor_ysize)) ||
705 (d->update_y1 < d->fb_window->OLD_cursor_y &&
706 d->update_y2 >= (d->fb_window->OLD_cursor_y + d->fb_window->OLD_cursor_ysize)) )
707 need_to_redraw_cursor = 1;
708 }
709 }
710
711 if (need_to_redraw_cursor) {
712 /* Remove old cursor, if any: */
713 if (d->fb_window->OLD_cursor_on) {
714 XPutImage(d->fb_window->x11_display,
715 d->fb_window->x11_fb_window,
716 d->fb_window->x11_fb_gc, d->fb_window->fb_ximage,
717 d->fb_window->OLD_cursor_x/d->vfb_scaledown,
718 d->fb_window->OLD_cursor_y/d->vfb_scaledown,
719 d->fb_window->OLD_cursor_x/d->vfb_scaledown,
720 d->fb_window->OLD_cursor_y/d->vfb_scaledown,
721 d->fb_window->OLD_cursor_xsize/d->vfb_scaledown + 1,
722 d->fb_window->OLD_cursor_ysize/d->vfb_scaledown + 1);
723 }
724 }
725 #endif
726
727 if (d->update_x2 != -1) {
728 int y, addr, addr2, q = d->vfb_scaledown;
729
730 if (d->update_x1 >= d->visible_xsize) d->update_x1 = d->visible_xsize - 1;
731 if (d->update_x2 >= d->visible_xsize) d->update_x2 = d->visible_xsize - 1;
732 if (d->update_y1 >= d->visible_ysize) d->update_y1 = d->visible_ysize - 1;
733 if (d->update_y2 >= d->visible_ysize) d->update_y2 = d->visible_ysize - 1;
734
735 /* Without these, we might miss the right most / bottom pixel: */
736 d->update_x2 += (q - 1);
737 d->update_y2 += (q - 1);
738
739 d->update_x1 = d->update_x1 / q * q;
740 d->update_x2 = d->update_x2 / q * q;
741 d->update_y1 = d->update_y1 / q * q;
742 d->update_y2 = d->update_y2 / q * q;
743
744 addr = d->update_y1 * d->bytes_per_line + d->update_x1 * d->bit_depth / 8;
745 addr2 = d->update_y1 * d->bytes_per_line + d->update_x2 * d->bit_depth / 8;
746
747 for (y=d->update_y1; y<=d->update_y2; y+=q) {
748 update_framebuffer(d, addr, addr2 - addr);
749 addr += d->bytes_per_line * q;
750 addr2 += d->bytes_per_line * q;
751 }
752
753 #ifdef WITH_X11
754 XPutImage(d->fb_window->x11_display, d->fb_window->x11_fb_window, d->fb_window->x11_fb_gc, d->fb_window->fb_ximage,
755 d->update_x1/d->vfb_scaledown, d->update_y1/d->vfb_scaledown,
756 d->update_x1/d->vfb_scaledown, d->update_y1/d->vfb_scaledown,
757 (d->update_x2 - d->update_x1)/d->vfb_scaledown + 1,
758 (d->update_y2 - d->update_y1)/d->vfb_scaledown + 1);
759
760 need_to_flush_x11 = 1;
761 #endif
762
763 d->update_x1 = d->update_y1 = 99999;
764 d->update_x2 = d->update_y2 = -1;
765 }
766
767 #ifdef WITH_X11
768 if (need_to_redraw_cursor) {
769 /* Paint new cursor: */
770 if (d->fb_window->cursor_on) {
771 x11_redraw_cursor(cpu->machine, d->fb_window->fb_number);
772 d->fb_window->OLD_cursor_on = d->fb_window->cursor_on;
773 d->fb_window->OLD_cursor_x = d->fb_window->cursor_x;
774 d->fb_window->OLD_cursor_y = d->fb_window->cursor_y;
775 d->fb_window->OLD_cursor_xsize = d->fb_window->cursor_xsize;
776 d->fb_window->OLD_cursor_ysize = d->fb_window->cursor_ysize;
777 }
778 }
779 #endif
780
781 #ifdef WITH_X11
782 if (need_to_flush_x11)
783 XFlush(d->fb_window->x11_display);
784 #endif
785 }
786
787
788 /*
789 * dev_fb_access():
790 */
791 int dev_fb_access(struct cpu *cpu, struct memory *mem,
792 uint64_t relative_addr, unsigned char *data, size_t len,
793 int writeflag, void *extra)
794 {
795 struct vfb_data *d = extra;
796 int i;
797
798 #ifdef FB_DEBUG
799 if (writeflag == MEM_WRITE) { if (data[0]) {
800 fatal("[ dev_fb: write to addr=%08lx, data = ",
801 (long)relative_addr);
802 for (i=0; i<len; i++)
803 fatal("%02x ", data[i]);
804 fatal("]\n");
805 } else {
806 fatal("[ dev_fb: read from addr=%08lx, data = ",
807 (long)relative_addr);
808 for (i=0; i<len; i++)
809 fatal("%02x ", d->framebuffer[relative_addr + i]);
810 fatal("]\n");
811 }
812 #endif
813
814 if (relative_addr >= d->framebuffer_size)
815 return 0;
816
817 /* See if a write actually modifies the framebuffer contents: */
818 if (writeflag == MEM_WRITE) {
819 for (i=0; i<len; i++) {
820 if (data[i] != d->framebuffer[relative_addr + i])
821 break;
822
823 /* If all bytes are equal to what is already stored
824 in the framebuffer, then simply return: */
825 if (i==len-1)
826 return 1;
827 }
828 }
829
830 /*
831 * If the framebuffer is modified, then we should keep a track
832 * of which area(s) we modify, so that the display isn't updated
833 * unnecessarily.
834 */
835 if (writeflag == MEM_WRITE && cpu->machine->use_x11) {
836 int x, y, x2,y2;
837
838 x = (relative_addr % d->bytes_per_line) * 8 / d->bit_depth;
839 y = relative_addr / d->bytes_per_line;
840 x2 = ((relative_addr + len) % d->bytes_per_line)
841 * 8 / d->bit_depth;
842 y2 = (relative_addr + len) / d->bytes_per_line;
843
844 if (x < d->update_x1 || d->update_x1 == -1)
845 d->update_x1 = x;
846 if (x > d->update_x2 || d->update_x2 == -1)
847 d->update_x2 = x;
848
849 if (y < d->update_y1 || d->update_y1 == -1)
850 d->update_y1 = y;
851 if (y > d->update_y2 || d->update_y2 == -1)
852 d->update_y2 = y;
853
854 if (x2 < d->update_x1 || d->update_x1 == -1)
855 d->update_x1 = x2;
856 if (x2 > d->update_x2 || d->update_x2 == -1)
857 d->update_x2 = x2;
858
859 if (y2 < d->update_y1 || d->update_y1 == -1)
860 d->update_y1 = y2;
861 if (y2 > d->update_y2 || d->update_y2 == -1)
862 d->update_y2 = y2;
863
864 /*
865 * An update covering more than one line will automatically
866 * force an update of all the affected lines:
867 */
868 if (y != y2) {
869 d->update_x1 = 0;
870 d->update_x2 = d->xsize-1;
871 }
872 }
873
874 /*
875 * Read from/write to the framebuffer:
876 * (TODO: take the color_plane_mask into account)
877 *
878 * Calling memcpy() is probably overkill, as it usually is just one
879 * or a few bytes that are read/written at a time.
880 */
881 if (writeflag == MEM_WRITE) {
882 if (len > 8)
883 memcpy(d->framebuffer + relative_addr, data, len);
884 else
885 for (i=0; i<len; i++)
886 d->framebuffer[relative_addr + i] = data[i];
887 } else {
888 if (len > 8)
889 memcpy(data, d->framebuffer + relative_addr, len);
890 else
891 for (i=0; i<len; i++)
892 data[i] = d->framebuffer[relative_addr + i];
893 }
894
895 return 1;
896 }
897
898
899 /*
900 * dev_fb_init():
901 *
902 * This function is big and ugly, but the point is to initialize a framebuffer
903 * device. :-)
904 *
905 * visible_xsize and visible_ysize are the sizes of the visible display area.
906 * xsize and ysize tell how much memory is actually allocated (for example
907 * visible_xsize could be 640, but xsize could be 1024, for better alignment).
908 *
909 * vfb_type is useful for selecting special features.
910 *
911 * type = VFB_GENERIC is the most useful type, especially when bit_depth = 24.
912 *
913 * VFB_DEC_VFB01, _VFB02, and VFB_DEC_MAXINE are DECstation specific.
914 *
915 * If type is VFB_HPCMIPS, then color encoding differs from the generic case.
916 *
917 * If bit_depth = -15 (note the minus sign), then a special hack is used for
918 * the Playstation Portable's 5-bit R, 5-bit G, 5-bit B.
919 */
920 struct vfb_data *dev_fb_init(struct machine *machine, struct memory *mem,
921 uint64_t baseaddr, int vfb_type, int visible_xsize, int visible_ysize,
922 int xsize, int ysize, int bit_depth, char *name)
923 {
924 struct vfb_data *d;
925 size_t size, nlen;
926 int flags;
927 char title[400];
928 char *name2;
929
930 d = malloc(sizeof(struct vfb_data));
931 if (d == NULL) {
932 fprintf(stderr, "out of memory\n");
933 exit(1);
934 }
935 memset(d, 0, sizeof(struct vfb_data));
936
937 d->vfb_type = vfb_type;
938
939 /* Defaults: */
940 d->xsize = xsize; d->visible_xsize = visible_xsize;
941 d->ysize = ysize; d->visible_ysize = visible_ysize;
942
943 d->bit_depth = bit_depth;
944
945 if (bit_depth == 15) {
946 d->color32k = 1;
947 bit_depth = d->bit_depth = 16;
948 } else if (bit_depth == -15) {
949 d->psp_15bit = 1;
950 bit_depth = d->bit_depth = 16;
951 }
952
953 /* Specific types: */
954 switch (vfb_type) {
955 case VFB_DEC_VFB01:
956 /* DECstation VFB01 (monochrome) */
957 d->xsize = 2048; d->visible_xsize = 1024;
958 d->ysize = 1024; d->visible_ysize = 864;
959 d->bit_depth = 1;
960 break;
961 case VFB_DEC_VFB02:
962 /* DECstation VFB02 (color) */
963 d->xsize = 1024; d->visible_xsize = 1024;
964 d->ysize = 1024; d->visible_ysize = 864;
965 d->bit_depth = 8;
966 break;
967 case VFB_DEC_MAXINE:
968 /* DECstation Maxine (1024x768x8) */
969 d->xsize = 1024; d->visible_xsize = d->xsize;
970 d->ysize = 768; d->visible_ysize = d->ysize;
971 d->bit_depth = 8;
972 break;
973 case VFB_PLAYSTATION2:
974 /* Playstation 2 */
975 d->xsize = xsize; d->visible_xsize = d->xsize;
976 d->ysize = ysize; d->visible_ysize = d->ysize;
977 d->bit_depth = 24;
978 break;
979 default:
980 ;
981 }
982
983 if (d->bit_depth == 2 || d->bit_depth == 4)
984 set_grayscale_palette(d, 1 << d->bit_depth);
985 else if (d->bit_depth == 8 || d->bit_depth == 1)
986 set_blackwhite_palette(d, 1 << d->bit_depth);
987
988 d->vfb_scaledown = machine->x11_scaledown;
989
990 d->bytes_per_line = d->xsize * d->bit_depth / 8;
991 size = d->ysize * d->bytes_per_line;
992
993 d->framebuffer = malloc(size);
994 if (d->framebuffer == NULL) {
995 fprintf(stderr, "out of memory\n");
996 exit(1);
997 }
998
999 /* Clear the framebuffer (all black pixels): */
1000 d->framebuffer_size = size;
1001 memset(d->framebuffer, 0, size);
1002
1003 d->x11_xsize = d->visible_xsize / d->vfb_scaledown;
1004 d->x11_ysize = d->visible_ysize / d->vfb_scaledown;
1005
1006 d->update_x1 = d->update_y1 = 99999;
1007 d->update_x2 = d->update_y2 = -1;
1008
1009
1010 /* Don't set the title to include the size of the framebuffer for
1011 VGA, since then the resolution might change during runtime. */
1012 if (strcmp(name, "VGA") == 0)
1013 snprintf(title, sizeof(title),"GXemul: %s framebuffer", name);
1014 else
1015 snprintf(title, sizeof(title),"GXemul: %ix%ix%i %s framebuffer",
1016 d->visible_xsize, d->visible_ysize, d->bit_depth, name);
1017 title[sizeof(title)-1] = '\0';
1018
1019 #ifdef WITH_X11
1020 if (machine->use_x11)
1021 d->fb_window = x11_fb_init(d->x11_xsize, d->x11_ysize,
1022 title, machine->x11_scaledown, machine);
1023 else
1024 #endif
1025 d->fb_window = NULL;
1026
1027 nlen = strlen(name) + 10;
1028 name2 = malloc(nlen);
1029 if (name2 == NULL) {
1030 fprintf(stderr, "out of memory in dev_fb_init()\n");
1031 exit(1);
1032 }
1033 snprintf(name2, nlen, "fb [%s]", name);
1034
1035 flags = MEM_DEFAULT;
1036 if ((baseaddr & 0xfff) == 0)
1037 flags = MEM_DYNTRANS_OK | MEM_DYNTRANS_WRITE_OK;
1038
1039 flags |= MEM_READING_HAS_NO_SIDE_EFFECTS;
1040
1041 memory_device_register(mem, name2, baseaddr, size, dev_fb_access,
1042 d, flags, d->framebuffer);
1043
1044 machine_add_tickfunction(machine, dev_fb_tick, d, FB_TICK_SHIFT);
1045 return d;
1046 }
1047
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