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[/] [openrisc/] [trunk/] [or1ksim/] [peripheral/] [fb.c] - Blame information for rev 37

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1 19 jeremybenn 
/* fb.c -- Simple frame buffer
2 
 
3 
   Copyright (C) 2001 Marko Mlinar, markom@opencores.org
4 
   Copyright (C) 2008 Embecosm Limited
5 
 
6 
   Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
7 
 
8 
   This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator.
9 
 
10 
   This program is free software; you can redistribute it and/or modify it
11 
   under the terms of the GNU General Public License as published by the Free
12 
   Software Foundation; either version 3 of the License, or (at your option)
13 
   any later version.
14 
 
15 
   This program is distributed in the hope that it will be useful, but WITHOUT
16 
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 
   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
18 
   more details.
19 
 
20 
   You should have received a copy of the GNU General Public License along
21 
   with this program.  If not, see <http://www.gnu.org/licenses/>.  */
22 
 
23 
/* This program is commented throughout in a fashion suitable for processing
24 
   with Doxygen. */
25 
 
26 
 
27 
/* Autoconf and/or portability configuration */
28 
#include "config.h"
29 
#include "port.h"
30 
 
31 
/* System includes */
32 
#include <stdlib.h>
33 
#include <stdio.h>
34 
 
35 
/* Package includes */
36 
#include "arch.h"
37 
#include "sim-config.h"
38 
#include "abstract.h"
39 
#include "sched.h"
40 
#include "toplevel-support.h"
41 
 
42 
 
43 
#define FB_SIZEX           640
44 
#define FB_SIZEY           480
45 
 
46 
#define CAM_SIZEX          352
47 
#define CAM_SIZEY          288
48 
 
49 
/*! Relative amount of time spent in refresh */
50 
#define REFRESH_DIVIDER     20
51 
 
52 
#define FB_CTRL            0x0000
53 
#define FB_BUFADDR         0x0004
54 
#define FB_CAMBUFADDR      0x0008
55 
#define FB_CAMPOSADDR      0x000c
56 
#define FB_PAL             0x0400
57 
 
58 
#define FB_WRAP (512*1024)
59 
 
60 
struct fb_state
61 
{
62 
  int enabled;
63 
  unsigned long pal[256];
64 
  int ctrl;
65 
  int pic;
66 
  int in_refresh;
67 
  int refresh_count;
68 
  oraddr_t addr;
69 
  oraddr_t cam_addr;
70 
  int camerax;
71 
  int cameray;
72 
  int camera_pos;
73 
  oraddr_t baseaddr;
74 
  int refresh;
75 
  int refresh_rate;
76 
  char *filename;
77 
};
78 
 
79 
static void
80 
change_buf_addr (struct fb_state *fb, oraddr_t addr)
81 
{
82 
  fb->addr = addr;
83 
}
84 
 
85 
/* Write a register */
86 
static void
87 
fb_write32 (oraddr_t addr, uint32_t value, void *dat)
88 
{
89 
  struct fb_state *fb = dat;
90 
 
91 
  switch (addr)
92 
    {
93 
    case FB_CTRL:
94 
      fb->ctrl = value;
95 
      break;
96 
    case FB_BUFADDR:
97 
      change_buf_addr (fb, value);
98 
      break;
99 
    case FB_CAMBUFADDR:
100 
      fb->cam_addr = value;
101 
      break;
102 
    case FB_CAMPOSADDR:
103 
      fb->camera_pos = value;
104 
      fb->camerax = value % FB_SIZEX;
105 
      fb->cameray = value / FB_SIZEX;
106 
      break;
107 
    default:
108 
      addr -= FB_PAL;
109 
      addr /= 4;
110 
      if (addr < 0 || addr >= 256)
111 
        {
112 
          fprintf (stderr, "Write out of palette buffer (0x%" PRIxADDR ")!\n",
113 
                   addr);
114 
        }
115 
      else
116 
        fb->pal[addr] = value;
117 
      break;
118 
    }
119 
}
120 
 
121 
/* Read a register */
122 
static oraddr_t
123 
fb_read32 (oraddr_t addr, void *dat)
124 
{
125 
  struct fb_state *fb = dat;
126 
 
127 
  switch (addr)
128 
    {
129 
    case FB_CTRL:
130 
      return (fb->ctrl & ~0xff000000) | (fb->
131 
                                         in_refresh ? 0x80000000 : 0) |
132 
        ((unsigned long) (fb->refresh_count & 0x7f) << 24);
133 
      break;
134 
    case FB_BUFADDR:
135 
      return fb->addr;
136 
      break;
137 
    case FB_CAMBUFADDR:
138 
      return fb->cam_addr;
139 
      break;
140 
    case FB_CAMPOSADDR:
141 
      return fb->camera_pos;
142 
      break;
143 
    default:
144 
      addr -= FB_PAL;
145 
      addr /= 4;
146 
      if (addr < 0 || addr >= 256)
147 
        {
148 
          fprintf (stderr, "Read out of palette buffer (0x%" PRIxADDR ")!\n",
149 
                   addr);
150 
          return 0;
151 
        }
152 
      else
153 
        return fb->pal[addr];
154 
    }
155 
}
156 
 
157 
/* define these also for big endian */
158 
#if __BIG_ENDIAN__
159 
#define CNV32(x) (\
160 
     ((((x) >> 24) & 0xff) << 0)\
161 
   | ((((x) >> 16) & 0xff) << 8)\
162 
   | ((((x) >> 8) & 0xff) << 16)\
163 
   | ((((x) >> 0) & 0xff) << 24))
164 
#define CNV16(x) (\
165 
     ((((x) >> 8) & 0xff) << 0)\
166 
   | ((((x) >> 0) & 0xff) << 8))
167 
#else
168 
#define CNV16(x) (x)
169 
#define CNV32(x) (x)
170 
#endif
171 
 
172 
/* Dumps a bmp file, based on current image */
173 
static int
174 
fb_dump_image8 (struct fb_state *fb, char *filename)
175 
{
176 
  int sx = FB_SIZEX;
177 
  int sy = FB_SIZEY;
178 
  int i, x = 0, y = 0;
179 
  FILE *fo;
180 
 
181 
  unsigned short int u16;
182 
  unsigned long int u32;
183 
 
184 
  if (config.sim.verbose)
185 
    PRINTF ("Creating %s...", filename);
186 
  fo = fopen (filename, "wb+");
187 
  u16 = CNV16 (19778);          /* BM */
188 
  if (!fwrite (&u16, 2, 1, fo))
189 
    return 1;
190 
  u32 = CNV32 (14 + 40 + sx * sy + 1024);       /* size */
191 
  if (!fwrite (&u32, 4, 1, fo))
192 
    return 1;
193 
  u32 = CNV32 (0);               /* reserved */
194 
  if (!fwrite (&u32, 4, 1, fo))
195 
    return 1;
196 
  u32 = 14 + 40 + 1024;         /* offset */
197 
  if (!fwrite (&u32, 4, 1, fo))
198 
    return 1;
199 
 
200 
  u32 = CNV32 (40);             /* header size */
201 
  if (!fwrite (&u32, 4, 1, fo))
202 
    return 1;
203 
  u32 = CNV32 (sx);             /* width */
204 
  if (!fwrite (&u32, 4, 1, fo))
205 
    return 1;
206 
  u32 = CNV32 (sy);             /* height */
207 
  if (!fwrite (&u32, 4, 1, fo))
208 
    return 1;
209 
  u16 = CNV16 (1);              /* planes */
210 
  if (!fwrite (&u16, 2, 1, fo))
211 
    return 1;
212 
  u16 = CNV16 (8);              /* bits */
213 
  if (!fwrite (&u16, 2, 1, fo))
214 
    return 1;
215 
  u32 = CNV32 (0);               /* compression */
216 
  if (!fwrite (&u32, 4, 1, fo))
217 
    return 1;
218 
  u32 = CNV32 (x * y);          /* image size */
219 
  if (!fwrite (&u32, 4, 1, fo))
220 
    return 1;
221 
  u32 = CNV32 (2835);           /* x resolution */
222 
  if (!fwrite (&u32, 4, 1, fo))
223 
    return 1;
224 
  u32 = CNV32 (2835);           /* y resolution */
225 
  if (!fwrite (&u32, 4, 1, fo))
226 
    return 1;
227 
  u32 = CNV32 (0);               /* ncolours = 0; should be generated */
228 
  if (!fwrite (&u32, 4, 1, fo))
229 
    return 1;
230 
  u32 = CNV32 (0);               /* important colours; all are important */
231 
  if (!fwrite (&u32, 4, 1, fo))
232 
    return 1;
233 
 
234 
  for (i = 0; i < 256; i++)
235 
    {
236 
      unsigned long val, d;
237 
      d = fb->pal[i];
238 
#if 1
239 
      val = ((d >> 0) & 0x1f) << 3;      /* Blue */
240 
      val |= ((d >> 5) & 0x3f) << 10;   /* Green */
241 
      val |= ((d >> 11) & 0x1f) << 19;  /* Red */
242 
#else
243 
      val = CNV32 (pal[i]);
244 
#endif
245 
      if (!fwrite (&val, 4, 1, fo))
246 
        return 1;
247 
    }
248 
 
249 
  if (config.sim.verbose)
250 
    PRINTF ("(%i,%i)", sx, sy);
251 
  /* Data is stored upside down */
252 
  for (y = sy - 1; y >= 0; y--)
253 
    {
254 
      int align = (4 - sx) % 4;
255 
      int zero = CNV32 (0);
256 
      int add;
257 
      while (align < 0)
258 
        align += 4;
259 
      for (x = 0; x < sx; x++)
260 
        {
261 
          add =
262 
            (fb->
263 
             addr & ~(FB_WRAP - 1)) | ((fb->addr + y * sx + x) & (FB_WRAP -
264 
                                                                  1));
265 
          fputc (eval_direct8 (add, 0, 0), fo);
266 
        }
267 
      if (align && !fwrite (&zero, align, 1, fo))
268 
        return 1;
269 
    }
270 
 
271 
  if (config.sim.verbose)
272 
    PRINTF ("DONE\n");
273 
  fclose (fo);
274 
  return 0;
275 
}
276 
 
277 
/* Dumps a bmp file, based on current image */
278 
static int
279 
fb_dump_image24 (struct fb_state *fb, char *filename)
280 
{
281 
  int sx = FB_SIZEX;
282 
  int sy = FB_SIZEY;
283 
  int x = 0, y = 0;
284 
  FILE *fo;
285 
 
286 
  unsigned short int u16;
287 
  unsigned long int u32;
288 
 
289 
  if (config.sim.verbose)
290 
    PRINTF ("Creating %s...", filename);
291 
  fo = fopen (filename, "wb+");
292 
  u16 = CNV16 (19778);          /* BM */
293 
  if (!fwrite (&u16, 2, 1, fo))
294 
    return 1;
295 
  u32 = CNV32 (14 + 40 + sx * sy * 3);  /* size */
296 
  if (!fwrite (&u32, 4, 1, fo))
297 
    return 1;
298 
  u32 = CNV32 (0);               /* reserved */
299 
  if (!fwrite (&u32, 4, 1, fo))
300 
    return 1;
301 
  u32 = 14 + 40;                /* offset */
302 
  if (!fwrite (&u32, 4, 1, fo))
303 
    return 1;
304 
 
305 
  u32 = CNV32 (40);             /* header size */
306 
  if (!fwrite (&u32, 4, 1, fo))
307 
    return 1;
308 
  u32 = CNV32 (sx);             /* width */
309 
  if (!fwrite (&u32, 4, 1, fo))
310 
    return 1;
311 
  u32 = CNV32 (sy);             /* height */
312 
  if (!fwrite (&u32, 4, 1, fo))
313 
    return 1;
314 
  u16 = CNV16 (1);              /* planes */
315 
  if (!fwrite (&u16, 2, 1, fo))
316 
    return 1;
317 
  u16 = CNV16 (24);             /* bits */
318 
  if (!fwrite (&u16, 2, 1, fo))
319 
    return 1;
320 
  u32 = CNV32 (0);               /* compression */
321 
  if (!fwrite (&u32, 4, 1, fo))
322 
    return 1;
323 
  u32 = CNV32 (x * y * 3);      /* image size */
324 
  if (!fwrite (&u32, 4, 1, fo))
325 
    return 1;
326 
  u32 = CNV32 (2835);           /* x resolution */
327 
  if (!fwrite (&u32, 4, 1, fo))
328 
    return 1;
329 
  u32 = CNV32 (2835);           /* y resolution */
330 
  if (!fwrite (&u32, 4, 1, fo))
331 
    return 1;
332 
  u32 = CNV32 (0);               /* ncolours = 0; should be generated */
333 
  if (!fwrite (&u32, 4, 1, fo))
334 
    return 1;
335 
  u32 = CNV32 (0);               /* important colours; all are important */
336 
  if (!fwrite (&u32, 4, 1, fo))
337 
    return 1;
338 
 
339 
  if (config.sim.verbose)
340 
    PRINTF ("(%i,%i)", sx, sy);
341 
  /* Data is stored upside down */
342 
  for (y = sy - 1; y >= 0; y--)
343 
    {
344 
      unsigned char line[FB_SIZEX][3];
345 
      for (x = 0; x < sx; x++)
346 
        if (y >= fb->cameray && x >= fb->camerax
347 
            && y < fb->cameray + CAM_SIZEY && x < fb->camerax + CAM_SIZEX)
348 
          {
349 
            int add =
350 
              (fb->cam_addr +
351 
               (x - fb->camerax + (y - fb->cameray) * CAM_SIZEX) * 2) ^ 2;
352 
            unsigned short d = eval_direct16 (add, 0, 0);
353 
            line[x][0] = ((d >> 0) & 0x1f) << 3;  /* Blue */
354 
            line[x][1] = ((d >> 5) & 0x3f) << 2;        /* Green */
355 
            line[x][2] = ((d >> 11) & 0x1f) << 3;       /* Red */
356 
          }
357 
        else
358 
          {
359 
            int add =
360 
              (fb->
361 
               addr & ~(FB_WRAP - 1)) | ((fb->addr + y * sx + x) & (FB_WRAP -
362 
                                                                    1));
363 
            unsigned short d = fb->pal[eval_direct8 (add, 0, 0)];
364 
            line[x][0] = ((d >> 0) & 0x1f) << 3;  /* Blue */
365 
            line[x][1] = ((d >> 5) & 0x3f) << 2;        /* Green */
366 
            line[x][2] = ((d >> 11) & 0x1f) << 3;       /* Red */
367 
          }
368 
      if (!fwrite (line, sizeof (line), 1, fo))
369 
        return 1;
370 
    }
371 
 
372 
  if (config.sim.verbose)
373 
    PRINTF ("DONE\n");
374 
  fclose (fo);
375 
  return 0;
376 
}
377 
 
378 
static void
379 
fb_job (void *dat)
380 
{
381 
  struct fb_state *fb = dat;
382 
 
383 
  if (fb->refresh)
384 
    {
385 
      /* dump the image? */
386 
      if (fb->ctrl & 1)
387 
        {
388 
          char temp[STR_SIZE];
389 
          sprintf (temp, "%s%04i.bmp", fb->filename, fb->pic);
390 
          if (fb->ctrl & 2)
391 
            fb_dump_image24 (fb, temp);
392 
          else
393 
            fb_dump_image8 (fb, temp);
394 
          fb->pic++;
395 
        }
396 
      SCHED_ADD (fb_job, dat, fb->refresh_rate / REFRESH_DIVIDER);
397 
      fb->in_refresh = 0;
398 
      fb->refresh = 0;
399 
    }
400 
  else
401 
    {
402 
      fb->refresh_count++;
403 
      fb->refresh = 1;
404 
      SCHED_ADD (fb_job, dat, fb->refresh_rate / REFRESH_DIVIDER);
405 
    }
406 
}
407 
 
408 
/* Reset all FBs */
409 
static void
410 
fb_reset (void *dat)
411 
{
412 
  struct fb_state *fb = dat;
413 
  int i;
414 
 
415 
  fb->pic = 0;
416 
  fb->addr = 0;
417 
  fb->ctrl = 0;
418 
 
419 
  for (i = 0; i < 256; i++)
420 
    fb->pal[i] = (i << 16) | (i << 8) | (i << 0);
421 
 
422 
  SCHED_ADD (fb_job, dat, fb->refresh_rate);
423 
  fb->refresh = 0;
424 
}
425 
 
426 
/*-----------------------------------------------------[ FB configuration ]---*/
427 
static void
428 
fb_enabled (union param_val val, void *dat)
429 
{
430 
  struct fb_state *fb = dat;
431 
  fb->enabled = val.int_val;
432 
}
433 
 
434 
 
435 
static void
436 
fb_baseaddr (union param_val val, void *dat)
437 
{
438 
  struct fb_state *fb = dat;
439 
  fb->baseaddr = val.addr_val;
440 
}
441 
 
442 
 
443 
static void
444 
fb_refresh_rate (union param_val val, void *dat)
445 
{
446 
  struct fb_state *fb = dat;
447 
  fb->refresh_rate = val.int_val;
448 
}
449 
 
450 
 
451 
/*---------------------------------------------------------------------------*/
452 
/*!Set the frame buffer output file
453 
 
454 
   Free any previously allocated value.
455 
 
456 
   @param[in] val  The value to use
457 
   @param[in] dat  The config data structure                                 */
458 
/*---------------------------------------------------------------------------*/
459 
static void
460 
fb_filename (union param_val  val,
461 
             void            *dat)
462 
{
463 
  struct fb_state *fb = dat;
464 
 
465 
  if (NULL != fb->filename)
466 
    {
467 
      free (fb->filename);
468 
      fb->filename = NULL;
469 
    }
470 
 
471 
  if (!(fb->filename = strdup (val.str_val)))
472 
    {
473 
      fprintf (stderr, "Peripheral FB: Run out of memory\n");
474 
      exit (-1);
475 
    }
476 
}       /* fb_filename() */
477 
 
478 
 
479 
/*---------------------------------------------------------------------------*/
480 
/*!Initialize a new frame buffer configuration
481 
 
482 
   ALL parameters are set explicitly to default values.                      */
483 
/*---------------------------------------------------------------------------*/
484 
static void *
485 
fb_sec_start ()
486 
{
487 
  struct fb_state *new = malloc (sizeof (struct fb_state));
488 
 
489 
  if (!new)
490 
    {
491 
      fprintf (stderr, "Peripheral FB: Run out of memory\n");
492 
      exit (-1);
493 
    }
494 
 
495 
  new->enabled       = 1;
496 
  new->baseaddr      = 0;
497 
  new->refresh_rate  = 1000000000000ULL / 50ULL / config.sim.clkcycle_ps;
498 
  new->filename      = strdup ("fb_out");
499 
 
500 
  new->ctrl          = 0;
501 
  new->pic           = 0;
502 
  new->in_refresh    = 1;
503 
  new->refresh_count = 0;
504 
  new->addr          = 0;
505 
  new->cam_addr      = 0;
506 
  new->camerax       = 0;
507 
  new->cameray       = 0;
508 
  new->camera_pos    = 0;
509 
 
510 
  return new;
511 
 
512 
}       /* fb_sec_start() */
513 
 
514 
 
515 
static void
516 
fb_sec_end (void *dat)
517 
{
518 
  struct fb_state *fb = dat;
519 
  struct mem_ops ops;
520 
 
521 
  if (!fb->enabled)
522 
    {
523 
      free (fb->filename);
524 
      free (fb);
525 
      return;
526 
    }
527 
 
528 
  memset (&ops, 0, sizeof (struct mem_ops));
529 
 
530 
  ops.readfunc32 = fb_read32;
531 
  ops.writefunc32 = fb_write32;
532 
  ops.write_dat32 = dat;
533 
  ops.read_dat32 = dat;
534 
 
535 
  /* FIXME: Correct delay? */
536 
  ops.delayr = 2;
537 
  ops.delayw = 2;
538 
 
539 
  reg_mem_area (fb->baseaddr, FB_PAL + 256 * 4, 0, &ops);
540 
 
541 
  reg_sim_reset (fb_reset, dat);
542 
}
543 
 
544 
void
545 
reg_fb_sec ()
546 
{
547 
  struct config_section *sec =
548 
    reg_config_sec ("fb", fb_sec_start, fb_sec_end);
549 
 
550 
  reg_config_param (sec, "baseaddr", paramt_addr, fb_baseaddr);
551 
  reg_config_param (sec, "enabled", paramt_int, fb_enabled);
552 
  reg_config_param (sec, "refresh_rate", paramt_int, fb_refresh_rate);
553 
  reg_config_param (sec, "txfile", paramt_str, fb_filename);
554 
  reg_config_param (sec, "filename", paramt_str, fb_filename);
555 
}

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