lxdream 0.9.1| filename | src/pvr2/pvr2.c |
| changeset | 975:007bf7eb944f |
| prev | 953:f4a156508ad1 |
| next | 1065:bc1cc0c54917 |
| author | nkeynes |
| date | Mon Jan 26 07:26:24 2009 +0000 (14 years ago) |
| permissions | -rw-r--r-- |
| last change | Add read_byte_for_write mem function for correct implementation of AND.B and friends with TLB enabled. Add read_byte and read_long MMIO stubs to do correct sign extension of IO reads |
| view | annotate | diff | log | raw |
1 /**
2 * $Id$
3 *
4 * PVR2 (Video) Core module implementation and MMIO registers.
5 *
6 * Copyright (c) 2005 Nathan Keynes.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18 #define MODULE pvr2_module
20 #include <assert.h>
21 #include "dream.h"
22 #include "eventq.h"
23 #include "display.h"
24 #include "mem.h"
25 #include "asic.h"
26 #include "clock.h"
27 #include "pvr2/pvr2.h"
28 #include "pvr2/pvr2mmio.h"
29 #include "pvr2/scene.h"
30 #include "sh4/sh4.h"
31 #define MMIO_IMPL
32 #include "pvr2/pvr2mmio.h"
34 #define MAX_RENDER_BUFFERS 4
36 #define HPOS_PER_FRAME 0
37 #define HPOS_PER_LINECOUNT 1
39 static void pvr2_init( void );
40 static void pvr2_reset( void );
41 static uint32_t pvr2_run_slice( uint32_t );
42 static void pvr2_save_state( FILE *f );
43 static int pvr2_load_state( FILE *f );
44 static void pvr2_update_raster_posn( uint32_t nanosecs );
45 static void pvr2_schedule_scanline_event( int eventid, int line, int minimum_lines, int line_time_ns );
46 static render_buffer_t pvr2_get_render_buffer( frame_buffer_t frame );
47 static render_buffer_t pvr2_next_render_buffer( );
48 static render_buffer_t pvr2_frame_buffer_to_render_buffer( frame_buffer_t frame );
49 uint32_t pvr2_get_sync_status();
51 void pvr2_display_frame( void );
53 static int output_colour_formats[] = { COLFMT_BGRA1555, COLFMT_RGB565, COLFMT_BGR888, COLFMT_BGRA8888 };
54 static int render_colour_formats[8] = {
55 COLFMT_BGRA1555, COLFMT_RGB565, COLFMT_BGRA4444, COLFMT_BGRA1555,
56 COLFMT_BGR888, COLFMT_BGRA8888, COLFMT_BGRA8888, COLFMT_BGRA4444 };
59 struct dreamcast_module pvr2_module = { "PVR2", pvr2_init, pvr2_reset, NULL,
60 pvr2_run_slice, NULL,
61 pvr2_save_state, pvr2_load_state };
64 display_driver_t display_driver = NULL;
66 struct pvr2_state {
67 uint32_t frame_count;
68 uint32_t line_count;
69 uint32_t line_remainder;
70 uint32_t cycles_run; /* Cycles already executed prior to main time slice */
71 uint32_t irq_hpos_line;
72 uint32_t irq_hpos_line_count;
73 uint32_t irq_hpos_mode;
74 uint32_t irq_hpos_time_ns; /* Time within the line */
75 uint32_t irq_vpos1;
76 uint32_t irq_vpos2;
77 uint32_t odd_even_field; /* 1 = odd, 0 = even */
78 int32_t palette_changed; /* TRUE if palette has changed since last render */
79 /* timing */
80 uint32_t dot_clock;
81 uint32_t total_lines;
82 uint32_t line_size;
83 uint32_t line_time_ns;
84 uint32_t vsync_lines;
85 uint32_t hsync_width_ns;
86 uint32_t front_porch_ns;
87 uint32_t back_porch_ns;
88 uint32_t retrace_start_line;
89 uint32_t retrace_end_line;
90 int32_t interlaced;
91 } pvr2_state;
93 static gchar *save_next_render_filename;
94 static render_buffer_t render_buffers[MAX_RENDER_BUFFERS];
95 static uint32_t render_buffer_count = 0;
96 static render_buffer_t displayed_render_buffer = NULL;
97 static uint32_t displayed_border_colour = 0;
99 /**
100 * Event handler for the hpos callback
101 */
102 static void pvr2_hpos_callback( int eventid ) {
103 asic_event( eventid );
104 pvr2_update_raster_posn(sh4r.slice_cycle);
105 if( pvr2_state.irq_hpos_mode == HPOS_PER_LINECOUNT ) {
106 pvr2_state.irq_hpos_line += pvr2_state.irq_hpos_line_count;
107 while( pvr2_state.irq_hpos_line > (pvr2_state.total_lines>>1) ) {
108 pvr2_state.irq_hpos_line -= (pvr2_state.total_lines>>1);
109 }
110 }
111 pvr2_schedule_scanline_event( eventid, pvr2_state.irq_hpos_line, 1,
112 pvr2_state.irq_hpos_time_ns );
113 }
115 /**
116 * Event handler for the scanline callbacks. Fires the corresponding
117 * ASIC event, and resets the timer for the next field.
118 */
119 static void pvr2_scanline_callback( int eventid )
120 {
121 asic_event( eventid );
122 pvr2_update_raster_posn(sh4r.slice_cycle);
123 if( eventid == EVENT_SCANLINE1 ) {
124 pvr2_schedule_scanline_event( eventid, pvr2_state.irq_vpos1, 1, 0 );
125 } else {
126 pvr2_schedule_scanline_event( eventid, pvr2_state.irq_vpos2, 1, 0 );
127 }
128 }
130 static void pvr2_gunpos_callback( int eventid )
131 {
132 pvr2_update_raster_posn(sh4r.slice_cycle);
133 int hpos = pvr2_state.line_remainder * pvr2_state.dot_clock / 1000000;
134 MMIO_WRITE( PVR2, GUNPOS, ((pvr2_state.line_count<<16)|(hpos&0x3FF)) );
135 asic_event( EVENT_MAPLE_DMA );
136 }
138 static void pvr2_init( void )
139 {
140 int i;
141 register_io_region( &mmio_region_PVR2 );
142 register_io_region( &mmio_region_PVR2PAL );
143 register_event_callback( EVENT_HPOS, pvr2_hpos_callback );
144 register_event_callback( EVENT_SCANLINE1, pvr2_scanline_callback );
145 register_event_callback( EVENT_SCANLINE2, pvr2_scanline_callback );
146 register_event_callback( EVENT_GUNPOS, pvr2_gunpos_callback );
147 texcache_init();
148 pvr2_reset();
149 pvr2_ta_reset();
150 save_next_render_filename = NULL;
151 for( i=0; i<MAX_RENDER_BUFFERS; i++ ) {
152 render_buffers[i] = NULL;
153 }
154 render_buffer_count = 0;
155 displayed_render_buffer = NULL;
156 displayed_border_colour = 0;
157 }
159 static void pvr2_reset( void )
160 {
161 int i;
162 pvr2_state.line_count = 0;
163 pvr2_state.line_remainder = 0;
164 pvr2_state.cycles_run = 0;
165 pvr2_state.irq_vpos1 = 0;
166 pvr2_state.irq_vpos2 = 0;
167 pvr2_state.dot_clock = PVR2_DOT_CLOCK;
168 pvr2_state.back_porch_ns = 4000;
169 pvr2_state.palette_changed = FALSE;
170 mmio_region_PVR2_write( DISP_TOTAL, 0x0270035F );
171 mmio_region_PVR2_write( DISP_SYNCTIME, 0x07D6A53F );
172 mmio_region_PVR2_write( YUV_ADDR, 0 );
173 mmio_region_PVR2_write( YUV_CFG, 0 );
175 pvr2_ta_init();
176 texcache_flush();
177 if( display_driver ) {
178 display_driver->display_blank(0);
179 for( i=0; i<render_buffer_count; i++ ) {
180 display_driver->destroy_render_buffer(render_buffers[i]);
181 render_buffers[i] = NULL;
182 }
183 render_buffer_count = 0;
184 }
185 }
187 void pvr2_save_render_buffer( FILE *f, render_buffer_t buffer )
188 {
189 struct frame_buffer fbuf;
191 fbuf.width = buffer->width;
192 fbuf.height = buffer->height;
193 fbuf.rowstride = fbuf.width*3;
194 fbuf.colour_format = COLFMT_BGR888;
195 fbuf.inverted = buffer->inverted;
196 fbuf.data = g_malloc0( buffer->width * buffer->height * 3 );
198 display_driver->read_render_buffer( fbuf.data, buffer, fbuf.rowstride, COLFMT_BGR888 );
199 write_png_to_stream( f, &fbuf );
200 g_free( fbuf.data );
202 fwrite( &buffer->rowstride, sizeof(buffer->rowstride), 1, f );
203 fwrite( &buffer->colour_format, sizeof(buffer->colour_format), 1, f );
204 fwrite( &buffer->address, sizeof(buffer->address), 1, f );
205 fwrite( &buffer->scale, sizeof(buffer->scale), 1, f );
206 int32_t flushed = (int32_t)buffer->flushed; // Force to 32-bits for save-file consistency
207 fwrite( &flushed, sizeof(flushed), 1, f );
209 }
211 render_buffer_t pvr2_load_render_buffer( FILE *f, gboolean *status )
212 {
213 frame_buffer_t frame = read_png_from_stream( f );
214 if( frame == NULL ) {
215 *status = FALSE;
216 return NULL;
217 }
218 *status = TRUE;
220 render_buffer_t buffer = pvr2_frame_buffer_to_render_buffer(frame);
221 if( buffer != NULL ) {
222 int32_t flushed;
223 fread( &buffer->rowstride, sizeof(buffer->rowstride), 1, f );
224 fread( &buffer->colour_format, sizeof(buffer->colour_format), 1, f );
225 fread( &buffer->address, sizeof(buffer->address), 1, f );
226 fread( &buffer->scale, sizeof(buffer->scale), 1, f );
227 fread( &flushed, sizeof(flushed), 1, f );
228 buffer->flushed = (gboolean)flushed;
229 } else {
230 fseek( f, sizeof(buffer->rowstride)+sizeof(buffer->colour_format)+
231 sizeof(buffer->address)+sizeof(buffer->scale)+
232 sizeof(int32_t), SEEK_CUR );
233 }
234 return buffer;
235 }
240 void pvr2_save_render_buffers( FILE *f )
241 {
242 int i;
243 uint32_t has_frontbuffer;
244 fwrite( &render_buffer_count, sizeof(render_buffer_count), 1, f );
245 if( displayed_render_buffer != NULL ) {
246 has_frontbuffer = 1;
247 fwrite( &has_frontbuffer, sizeof(has_frontbuffer), 1, f );
248 pvr2_save_render_buffer( f, displayed_render_buffer );
249 } else {
250 has_frontbuffer = 0;
251 fwrite( &has_frontbuffer, sizeof(has_frontbuffer), 1, f );
252 }
254 for( i=0; i<render_buffer_count; i++ ) {
255 if( render_buffers[i] != displayed_render_buffer && render_buffers[i] != NULL ) {
256 pvr2_save_render_buffer( f, render_buffers[i] );
257 }
258 }
259 }
261 gboolean pvr2_load_render_buffers( FILE *f )
262 {
263 uint32_t count, has_frontbuffer;
264 gboolean loadok;
265 int i;
267 fread( &count, sizeof(count), 1, f );
268 if( count > MAX_RENDER_BUFFERS ) {
269 return FALSE;
270 }
271 fread( &has_frontbuffer, sizeof(has_frontbuffer), 1, f );
272 for( i=0; i<render_buffer_count; i++ ) {
273 display_driver->destroy_render_buffer(render_buffers[i]);
274 render_buffers[i] = NULL;
275 }
276 render_buffer_count = 0;
278 if( has_frontbuffer ) {
279 displayed_render_buffer = pvr2_load_render_buffer(f, &loadok);
280 if( displayed_render_buffer != NULL )
281 display_driver->display_render_buffer( displayed_render_buffer );
282 else if( !loadok )
283 return FALSE;
284 count--;
285 }
287 for( i=0; i<count; i++ ) {
288 pvr2_load_render_buffer( f, &loadok );
289 if( !loadok )
290 return FALSE;
291 }
292 return TRUE;
293 }
296 static void pvr2_save_state( FILE *f )
297 {
298 pvr2_save_render_buffers( f );
299 fwrite( &pvr2_state, sizeof(pvr2_state), 1, f );
300 pvr2_ta_save_state( f );
301 pvr2_yuv_save_state( f );
302 }
304 static int pvr2_load_state( FILE *f )
305 {
306 if( !pvr2_load_render_buffers(f) )
307 return 1;
308 if( fread( &pvr2_state, sizeof(pvr2_state), 1, f ) != 1 )
309 return 1;
310 if( pvr2_ta_load_state(f) ) {
311 return 1;
312 }
313 return pvr2_yuv_load_state(f);
314 }
316 /**
317 * Update the current raster position to the given number of nanoseconds,
318 * relative to the last time slice. (ie the raster will be adjusted forward
319 * by nanosecs - nanosecs_already_run_this_timeslice)
320 */
321 static void pvr2_update_raster_posn( uint32_t nanosecs )
322 {
323 uint32_t old_line_count = pvr2_state.line_count;
324 if( pvr2_state.line_time_ns == 0 ) {
325 return; /* do nothing */
326 }
327 pvr2_state.line_remainder += (nanosecs - pvr2_state.cycles_run);
328 pvr2_state.cycles_run = nanosecs;
329 while( pvr2_state.line_remainder >= pvr2_state.line_time_ns ) {
330 pvr2_state.line_count ++;
331 pvr2_state.line_remainder -= pvr2_state.line_time_ns;
332 }
334 if( pvr2_state.line_count >= pvr2_state.total_lines ) {
335 pvr2_state.line_count -= pvr2_state.total_lines;
336 if( pvr2_state.interlaced ) {
337 pvr2_state.odd_even_field = !pvr2_state.odd_even_field;
338 }
339 }
340 if( pvr2_state.line_count >= pvr2_state.retrace_end_line &&
341 (old_line_count < pvr2_state.retrace_end_line ||
342 old_line_count > pvr2_state.line_count) ) {
343 pvr2_state.frame_count++;
344 pvr2_display_frame();
345 }
346 }
348 static uint32_t pvr2_run_slice( uint32_t nanosecs )
349 {
350 pvr2_update_raster_posn( nanosecs );
351 pvr2_state.cycles_run = 0;
352 return nanosecs;
353 }
355 int pvr2_get_frame_count()
356 {
357 return pvr2_state.frame_count;
358 }
360 void pvr2_redraw_display()
361 {
362 if( display_driver != NULL ) {
363 if( displayed_render_buffer == NULL ) {
364 display_driver->display_blank(displayed_border_colour);
365 } else {
366 display_driver->display_render_buffer(displayed_render_buffer);
367 }
368 }
369 }
371 gboolean pvr2_save_next_scene( const gchar *filename )
372 {
373 if( save_next_render_filename != NULL ) {
374 g_free( save_next_render_filename );
375 }
376 save_next_render_filename = g_strdup(filename);
377 return TRUE;
378 }
382 /**
383 * Display the next frame, copying the current contents of video ram to
384 * the window. If the video configuration has changed, first recompute the
385 * new frame size/depth.
386 */
387 void pvr2_display_frame( void )
388 {
389 int dispmode = MMIO_READ( PVR2, DISP_MODE );
390 int vidcfg = MMIO_READ( PVR2, DISP_SYNCCFG );
391 gboolean bEnabled = (dispmode & DISPMODE_ENABLE) && (vidcfg & DISPCFG_VO ) ? TRUE : FALSE;
393 if( display_driver == NULL ) {
394 return; /* can't really do anything much */
395 } else if( !bEnabled ) {
396 /* Output disabled == black */
397 displayed_render_buffer = NULL;
398 displayed_border_colour = 0;
399 display_driver->display_blank( 0 );
400 } else if( MMIO_READ( PVR2, DISP_CFG2 ) & 0x08 ) {
401 /* Enabled but blanked - border colour */
402 displayed_border_colour = MMIO_READ( PVR2, DISP_BORDER );
403 displayed_render_buffer = NULL;
404 display_driver->display_blank( displayed_border_colour );
405 } else {
406 /* Real output - determine dimensions etc */
407 struct frame_buffer fbuf;
408 uint32_t dispsize = MMIO_READ( PVR2, DISP_SIZE );
409 int vid_stride = (((dispsize & DISPSIZE_MODULO) >> 20) - 1);
410 int vid_ppl = ((dispsize & DISPSIZE_PPL)) + 1;
412 fbuf.colour_format = output_colour_formats[(dispmode & DISPMODE_COLFMT) >> 2];
413 fbuf.width = (vid_ppl << 2) / colour_formats[fbuf.colour_format].bpp;
414 fbuf.height = ((dispsize & DISPSIZE_LPF) >> 10) + 1;
415 fbuf.size = (vid_ppl << 2) * fbuf.height;
416 fbuf.rowstride = (vid_ppl + vid_stride) << 2;
418 /* Determine the field to display, and deinterlace if possible */
419 if( pvr2_state.interlaced ) {
420 if( vid_ppl == vid_stride ) { /* Magic deinterlace */
421 fbuf.height = fbuf.height << 1;
422 fbuf.rowstride = vid_ppl << 2;
423 fbuf.address = MMIO_READ( PVR2, DISP_ADDR1 );
424 } else {
425 /* Just display the field as is, folks. This is slightly tricky -
426 * we pick the field based on which frame is about to come through,
427 * which may not be the same as the odd_even_field.
428 */
429 gboolean oddfield = pvr2_state.odd_even_field;
430 if( pvr2_state.line_count >= pvr2_state.retrace_start_line ) {
431 oddfield = !oddfield;
432 }
433 if( oddfield ) {
434 fbuf.address = MMIO_READ( PVR2, DISP_ADDR1 );
435 } else {
436 fbuf.address = MMIO_READ( PVR2, DISP_ADDR2 );
437 }
438 }
439 } else {
440 fbuf.address = MMIO_READ( PVR2, DISP_ADDR1 );
441 }
442 fbuf.address = (fbuf.address & 0x00FFFFFF) + PVR2_RAM_BASE;
443 fbuf.inverted = FALSE;
444 fbuf.data = pvr2_main_ram + (fbuf.address&0x00FFFFFF);
446 render_buffer_t rbuf = pvr2_get_render_buffer( &fbuf );
447 if( rbuf == NULL ) {
448 rbuf = pvr2_frame_buffer_to_render_buffer( &fbuf );
449 }
450 displayed_render_buffer = rbuf;
451 if( rbuf != NULL ) {
452 display_driver->display_render_buffer( rbuf );
453 }
454 }
455 }
457 /**
458 * This has to handle every single register individually as they all get masked
459 * off differently (and its easier to do it at write time)
460 */
461 MMIO_REGION_WRITE_FN( PVR2, reg, val )
462 {
463 reg &= 0xFFF;
464 if( reg >= 0x200 && reg < 0x600 ) { /* Fog table */
465 MMIO_WRITE( PVR2, reg, val );
466 return;
467 }
469 switch(reg) {
470 case PVRID:
471 case PVRVER:
472 case GUNPOS: /* Read only registers */
473 break;
474 case PVRRESET:
475 val &= 0x00000007; /* Do stuff? */
476 MMIO_WRITE( PVR2, reg, val );
477 break;
478 case RENDER_START: /* Don't really care what value */
479 if( save_next_render_filename != NULL ) {
480 if( pvr2_render_save_scene(save_next_render_filename) == 0 ) {
481 INFO( "Saved scene to %s", save_next_render_filename);
482 }
483 g_free( save_next_render_filename );
484 save_next_render_filename = NULL;
485 }
486 pvr2_scene_read();
487 render_buffer_t buffer = pvr2_next_render_buffer();
488 if( buffer != NULL ) {
489 pvr2_scene_render( buffer );
490 if( buffer->address < PVR2_RAM_BASE ) {
491 // Flush immediately - optimize this later. Otherwise this gets
492 // complicated very quickly trying to second-guess how it's
493 // going to be used as a texture.
494 pvr2_finish_render_buffer( buffer );
495 pvr2_render_buffer_copy_to_sh4( buffer );
496 }
497 }
498 asic_event( EVENT_PVR_RENDER_DONE );
499 break;
500 case RENDER_POLYBASE:
501 MMIO_WRITE( PVR2, reg, val&0x00F00000 );
502 break;
503 case RENDER_TSPCFG:
504 MMIO_WRITE( PVR2, reg, val&0x00010101 );
505 break;
506 case DISP_BORDER:
507 MMIO_WRITE( PVR2, reg, val&0x01FFFFFF );
508 break;
509 case DISP_MODE:
510 MMIO_WRITE( PVR2, reg, val&0x00FFFF7F );
511 break;
512 case RENDER_MODE:
513 MMIO_WRITE( PVR2, reg, val&0x00FFFF0F );
514 break;
515 case RENDER_SIZE:
516 MMIO_WRITE( PVR2, reg, val&0x000001FF );
517 break;
518 case DISP_ADDR1:
519 val &= 0x00FFFFFC;
520 MMIO_WRITE( PVR2, reg, val );
521 pvr2_update_raster_posn(sh4r.slice_cycle);
522 break;
523 case DISP_ADDR2:
524 MMIO_WRITE( PVR2, reg, val&0x00FFFFFC );
525 pvr2_update_raster_posn(sh4r.slice_cycle);
526 break;
527 case DISP_SIZE:
528 MMIO_WRITE( PVR2, reg, val&0x3FFFFFFF );
529 break;
530 case RENDER_ADDR1:
531 case RENDER_ADDR2:
532 MMIO_WRITE( PVR2, reg, val&0x01FFFFFC );
533 break;
534 case RENDER_HCLIP:
535 MMIO_WRITE( PVR2, reg, val&0x07FF07FF );
536 break;
537 case RENDER_VCLIP:
538 MMIO_WRITE( PVR2, reg, val&0x03FF03FF );
539 break;
540 case DISP_HPOSIRQ:
541 MMIO_WRITE( PVR2, reg, val&0x03FF33FF );
542 pvr2_state.irq_hpos_line = val & 0x03FF;
543 pvr2_state.irq_hpos_time_ns = 2000000*((val>>16)&0x03FF)/pvr2_state.dot_clock;
544 pvr2_state.irq_hpos_mode = (val >> 12) & 0x03;
545 switch( pvr2_state.irq_hpos_mode ) {
546 case 3: /* Reserved - treat as 0 */
547 case 0: /* Once per frame at specified line */
548 pvr2_state.irq_hpos_mode = HPOS_PER_FRAME;
549 break;
550 case 2: /* Once per line - as per-line-count */
551 pvr2_state.irq_hpos_line = 1;
552 pvr2_state.irq_hpos_mode = 1;
553 case 1: /* Once per N lines */
554 pvr2_state.irq_hpos_line_count = pvr2_state.irq_hpos_line;
555 pvr2_state.irq_hpos_line = (pvr2_state.line_count >> 1) +
556 pvr2_state.irq_hpos_line_count;
557 while( pvr2_state.irq_hpos_line > (pvr2_state.total_lines>>1) ) {
558 pvr2_state.irq_hpos_line -= (pvr2_state.total_lines>>1);
559 }
560 pvr2_state.irq_hpos_mode = HPOS_PER_LINECOUNT;
561 }
562 pvr2_schedule_scanline_event( EVENT_HPOS, pvr2_state.irq_hpos_line, 0,
563 pvr2_state.irq_hpos_time_ns );
564 break;
565 case DISP_VPOSIRQ:
566 val = val & 0x03FF03FF;
567 pvr2_state.irq_vpos1 = (val >> 16);
568 pvr2_state.irq_vpos2 = val & 0x03FF;
569 pvr2_update_raster_posn(sh4r.slice_cycle);
570 pvr2_schedule_scanline_event( EVENT_SCANLINE1, pvr2_state.irq_vpos1, 0, 0 );
571 pvr2_schedule_scanline_event( EVENT_SCANLINE2, pvr2_state.irq_vpos2, 0, 0 );
572 MMIO_WRITE( PVR2, reg, val );
573 break;
574 case RENDER_NEARCLIP:
575 MMIO_WRITE( PVR2, reg, val & 0x7FFFFFFF );
576 break;
577 case RENDER_SHADOW:
578 MMIO_WRITE( PVR2, reg, val&0x000001FF );
579 break;
580 case RENDER_OBJCFG:
581 MMIO_WRITE( PVR2, reg, val&0x003FFFFF );
582 break;
583 case RENDER_TSPCLIP:
584 MMIO_WRITE( PVR2, reg, val&0x7FFFFFFF );
585 break;
586 case RENDER_FARCLIP:
587 MMIO_WRITE( PVR2, reg, val&0xFFFFFFF0 );
588 break;
589 case RENDER_BGPLANE:
590 MMIO_WRITE( PVR2, reg, val&0x1FFFFFFF );
591 break;
592 case RENDER_ISPCFG:
593 MMIO_WRITE( PVR2, reg, val&0x00FFFFF9 );
594 break;
595 case VRAM_CFG1:
596 MMIO_WRITE( PVR2, reg, val&0x000000FF );
597 break;
598 case VRAM_CFG2:
599 MMIO_WRITE( PVR2, reg, val&0x003FFFFF );
600 break;
601 case VRAM_CFG3:
602 MMIO_WRITE( PVR2, reg, val&0x1FFFFFFF );
603 break;
604 case RENDER_FOGTBLCOL:
605 case RENDER_FOGVRTCOL:
606 MMIO_WRITE( PVR2, reg, val&0x00FFFFFF );
607 break;
608 case RENDER_FOGCOEFF:
609 MMIO_WRITE( PVR2, reg, val&0x0000FFFF );
610 break;
611 case RENDER_CLAMPHI:
612 case RENDER_CLAMPLO:
613 MMIO_WRITE( PVR2, reg, val );
614 break;
615 case RENDER_TEXSIZE:
616 MMIO_WRITE( PVR2, reg, val&0x00031F1F );
617 break;
618 case RENDER_PALETTE:
619 MMIO_WRITE( PVR2, reg, val&0x00000003 );
620 break;
621 case RENDER_ALPHA_REF:
622 MMIO_WRITE( PVR2, reg, val&0x000000FF );
623 break;
624 /********** CRTC registers *************/
625 case DISP_HBORDER:
626 case DISP_VBORDER:
627 MMIO_WRITE( PVR2, reg, val&0x03FF03FF );
628 break;
629 case DISP_TOTAL:
630 val = val & 0x03FF03FF;
631 MMIO_WRITE( PVR2, reg, val );
632 pvr2_update_raster_posn(sh4r.slice_cycle);
633 pvr2_state.total_lines = (val >> 16) + 1;
634 pvr2_state.line_size = (val & 0x03FF) + 1;
635 pvr2_state.line_time_ns = 1000000 * pvr2_state.line_size / pvr2_state.dot_clock;
636 pvr2_state.retrace_end_line = 0x2A;
637 pvr2_state.retrace_start_line = pvr2_state.total_lines - 6;
638 pvr2_schedule_scanline_event( EVENT_SCANLINE1, pvr2_state.irq_vpos1, 0, 0 );
639 pvr2_schedule_scanline_event( EVENT_SCANLINE2, pvr2_state.irq_vpos2, 0, 0 );
640 pvr2_schedule_scanline_event( EVENT_HPOS, pvr2_state.irq_hpos_line, 0,
641 pvr2_state.irq_hpos_time_ns );
642 break;
643 case DISP_SYNCCFG:
644 MMIO_WRITE( PVR2, reg, val&0x000003FF );
645 pvr2_state.interlaced = (val & 0x0010) ? TRUE : FALSE;
646 break;
647 case DISP_SYNCTIME:
648 pvr2_state.vsync_lines = (val >> 8) & 0x0F;
649 pvr2_state.hsync_width_ns = ((val & 0x7F) + 1) * 2000000 / pvr2_state.dot_clock;
650 MMIO_WRITE( PVR2, reg, val&0xFFFFFF7F );
651 break;
652 case DISP_CFG2:
653 MMIO_WRITE( PVR2, reg, val&0x003F01FF );
654 break;
655 case DISP_HPOS:
656 val = val & 0x03FF;
657 pvr2_state.front_porch_ns = (val + 1) * 1000000 / pvr2_state.dot_clock;
658 MMIO_WRITE( PVR2, reg, val );
659 break;
660 case DISP_VPOS:
661 MMIO_WRITE( PVR2, reg, val&0x03FF03FF );
662 break;
664 /*********** Tile accelerator registers ***********/
665 case TA_POLYPOS:
666 case TA_LISTPOS:
667 /* Readonly registers */
668 break;
669 case TA_TILEBASE:
670 case TA_LISTEND:
671 case TA_LISTBASE:
672 MMIO_WRITE( PVR2, reg, val&0x00FFFFE0 );
673 break;
674 case RENDER_TILEBASE:
675 case TA_POLYBASE:
676 case TA_POLYEND:
677 MMIO_WRITE( PVR2, reg, val&0x00FFFFFC );
678 break;
679 case TA_TILESIZE:
680 MMIO_WRITE( PVR2, reg, val&0x000F003F );
681 break;
682 case TA_TILECFG:
683 MMIO_WRITE( PVR2, reg, val&0x00133333 );
684 break;
685 case TA_INIT:
686 if( val & 0x80000000 )
687 pvr2_ta_init();
688 break;
689 case TA_REINIT:
690 break;
691 /**************** Scaler registers? ****************/
692 case RENDER_SCALER:
693 MMIO_WRITE( PVR2, reg, val&0x0007FFFF );
694 break;
696 case YUV_ADDR:
697 val = val & 0x00FFFFF8;
698 MMIO_WRITE( PVR2, reg, val );
699 pvr2_yuv_init( val );
700 break;
701 case YUV_CFG:
702 MMIO_WRITE( PVR2, reg, val&0x01013F3F );
703 pvr2_yuv_set_config(val);
704 break;
706 /**************** Unknowns ***************/
707 case PVRUNK1:
708 MMIO_WRITE( PVR2, reg, val&0x000007FF );
709 break;
710 case PVRUNK2:
711 MMIO_WRITE( PVR2, reg, val&0x00000007 );
712 break;
713 case PVRUNK3:
714 MMIO_WRITE( PVR2, reg, val&0x000FFF3F );
715 break;
716 case PVRUNK5:
717 MMIO_WRITE( PVR2, reg, val&0x0000FFFF );
718 break;
719 case PVRUNK7:
720 MMIO_WRITE( PVR2, reg, val&0x00000001 );
721 break;
722 case PVRUNK8:
723 MMIO_WRITE( PVR2, reg, val&0x0300FFFF );
724 break;
725 }
726 }
728 /**
729 * Calculate the current read value of the syncstat register, using
730 * the current SH4 clock time as an offset from the last timeslice.
731 * The register reads (LSB to MSB) as:
732 * 0..9 Current scan line
733 * 10 Odd/even field (1 = odd, 0 = even)
734 * 11 Display active (including border and overscan)
735 * 12 Horizontal sync off
736 * 13 Vertical sync off
737 * Note this method is probably incorrect for anything other than straight
738 * interlaced PAL/NTSC, and needs further testing.
739 */
740 uint32_t pvr2_get_sync_status()
741 {
742 pvr2_update_raster_posn(sh4r.slice_cycle);
743 uint32_t result = pvr2_state.line_count;
745 if( pvr2_state.odd_even_field ) {
746 result |= 0x0400;
747 }
748 if( (pvr2_state.line_count & 0x01) == pvr2_state.odd_even_field ) {
749 if( pvr2_state.line_remainder > pvr2_state.hsync_width_ns ) {
750 result |= 0x1000; /* !HSYNC */
751 }
752 if( pvr2_state.line_count >= pvr2_state.vsync_lines ) {
753 if( pvr2_state.line_remainder > pvr2_state.front_porch_ns ) {
754 result |= 0x2800; /* Display active */
755 } else {
756 result |= 0x2000; /* Front porch */
757 }
758 }
759 } else {
760 if( pvr2_state.line_count >= pvr2_state.vsync_lines ) {
761 if( pvr2_state.line_remainder < (pvr2_state.line_time_ns - pvr2_state.back_porch_ns)) {
762 result |= 0x3800; /* Display active */
763 } else {
764 result |= 0x3000;
765 }
766 } else {
767 result |= 0x1000; /* Back porch */
768 }
769 }
770 return result;
771 }
773 /**
774 * Schedule a "scanline" event. This actually goes off at
775 * 2 * line in even fields and 2 * line + 1 in odd fields.
776 * Otherwise this behaves as per pvr2_schedule_line_event().
777 * The raster position should be updated before calling this
778 * method.
779 * @param eventid Event to fire at the specified time
780 * @param line Line on which to fire the event (this is 2n/2n+1 for interlaced
781 * displays).
782 * @param hpos_ns Nanoseconds into the line at which to fire.
783 */
784 static void pvr2_schedule_scanline_event( int eventid, int line, int minimum_lines, int hpos_ns )
785 {
786 uint32_t field = pvr2_state.odd_even_field;
787 if( line <= pvr2_state.line_count && pvr2_state.interlaced ) {
788 field = !field;
789 }
790 if( hpos_ns > pvr2_state.line_time_ns ) {
791 hpos_ns = pvr2_state.line_time_ns;
792 }
794 line <<= 1;
795 if( field ) {
796 line += 1;
797 }
799 if( line < pvr2_state.total_lines ) {
800 uint32_t lines;
801 uint32_t time;
802 if( line <= pvr2_state.line_count ) {
803 lines = (pvr2_state.total_lines - pvr2_state.line_count + line);
804 } else {
805 lines = (line - pvr2_state.line_count);
806 }
807 if( lines <= minimum_lines ) {
808 lines += pvr2_state.total_lines;
809 }
810 time = (lines * pvr2_state.line_time_ns) - pvr2_state.line_remainder + hpos_ns;
811 event_schedule( eventid, time );
812 } else {
813 event_cancel( eventid );
814 }
815 }
817 void pvr2_queue_gun_event( int xpos, int ypos )
818 {
819 pvr2_update_raster_posn(sh4r.slice_cycle);
820 pvr2_schedule_scanline_event( EVENT_GUNPOS, (ypos >> 1) + pvr2_state.vsync_lines, 0,
821 (1000000 * xpos / pvr2_state.dot_clock) + pvr2_state.hsync_width_ns );
822 }
824 MMIO_REGION_READ_FN( PVR2, reg )
825 {
826 reg &= 0xFFF;
827 switch( reg ) {
828 case DISP_SYNCSTAT:
829 return pvr2_get_sync_status();
830 default:
831 return MMIO_READ( PVR2, reg );
832 }
833 }
834 MMIO_REGION_READ_DEFSUBFNS(PVR2)
835 MMIO_REGION_READ_DEFSUBFNS(PVR2PAL)
837 MMIO_REGION_WRITE_FN( PVR2PAL, reg, val )
838 {
839 reg &= 0xFFF;
840 MMIO_WRITE( PVR2PAL, reg, val );
841 pvr2_state.palette_changed = TRUE;
842 }
844 void pvr2_check_palette_changed()
845 {
846 if( pvr2_state.palette_changed ) {
847 texcache_invalidate_palette();
848 pvr2_state.palette_changed = FALSE;
849 }
850 }
852 MMIO_REGION_READ_DEFFN( PVR2PAL );
854 void pvr2_set_base_address( uint32_t base )
855 {
856 mmio_region_PVR2_write( DISP_ADDR1, base );
857 }
859 render_buffer_t pvr2_create_render_buffer( sh4addr_t addr, int width, int height, GLuint tex_id )
860 {
861 if( display_driver != NULL && display_driver->create_render_buffer != NULL ) {
862 render_buffer_t buffer = display_driver->create_render_buffer(width,height,tex_id);
863 buffer->address = addr;
864 return buffer;
865 }
866 return NULL;
867 }
869 void pvr2_destroy_render_buffer( render_buffer_t buffer )
870 {
871 if( !buffer->flushed )
872 pvr2_render_buffer_copy_to_sh4( buffer );
873 display_driver->destroy_render_buffer( buffer );
874 }
876 void pvr2_finish_render_buffer( render_buffer_t buffer )
877 {
878 display_driver->finish_render( buffer );
879 }
881 /**
882 * Find the render buffer corresponding to the requested output frame
883 * (does not consider texture renders).
884 * @return the render_buffer if found, or null if no such buffer.
885 *
886 * Note: Currently does not consider "partial matches", ie partial
887 * frame overlap - it probably needs to do this.
888 */
889 render_buffer_t pvr2_get_render_buffer( frame_buffer_t frame )
890 {
891 int i;
892 for( i=0; i<render_buffer_count; i++ ) {
893 if( render_buffers[i] != NULL && render_buffers[i]->address == frame->address ) {
894 return render_buffers[i];
895 }
896 }
897 return NULL;
898 }
900 /**
901 * Allocate a render buffer with the requested parameters.
902 * The order of preference is:
903 * 1. An existing buffer with the same address. (not flushed unless the new
904 * size is smaller than the old one).
905 * 2. An existing buffer with the same size chosen by LRU order. Old buffer
906 * is flushed to vram.
907 * 3. A new buffer if one can be created.
908 * 4. The current display buff
909 * Note: The current display field(s) will never be overwritten except as a last
910 * resort.
911 */
912 render_buffer_t pvr2_alloc_render_buffer( sh4addr_t render_addr, int width, int height )
913 {
914 int i;
915 render_buffer_t result = NULL;
917 /* Check existing buffers for an available buffer */
918 for( i=0; i<render_buffer_count; i++ ) {
919 if( render_buffers[i]->width == width && render_buffers[i]->height == height ) {
920 /* needs to be the right dimensions */
921 if( render_buffers[i]->address == render_addr ) {
922 if( displayed_render_buffer == render_buffers[i] ) {
923 /* Same address, but we can't use it because the
924 * display has it. Mark it as unaddressed for later.
925 */
926 render_buffers[i]->address = -1;
927 } else {
928 /* perfect */
929 result = render_buffers[i];
930 break;
931 }
932 } else if( render_buffers[i]->address == -1 && result == NULL &&
933 displayed_render_buffer != render_buffers[i] ) {
934 result = render_buffers[i];
935 }
937 } else if( render_buffers[i]->address == render_addr ) {
938 /* right address, wrong size - if it's larger, flush it, otherwise
939 * nuke it quietly */
940 if( render_buffers[i]->width * render_buffers[i]->height >
941 width*height ) {
942 pvr2_render_buffer_copy_to_sh4( render_buffers[i] );
943 }
944 render_buffers[i]->address = -1;
945 }
946 }
948 /* Nothing available - make one */
949 if( result == NULL ) {
950 if( render_buffer_count == MAX_RENDER_BUFFERS ) {
951 /* maximum buffers reached - need to throw one away */
952 uint32_t field1_addr = MMIO_READ( PVR2, DISP_ADDR1 );
953 uint32_t field2_addr = MMIO_READ( PVR2, DISP_ADDR2 );
954 for( i=0; i<render_buffer_count; i++ ) {
955 if( render_buffers[i]->address != field1_addr &&
956 render_buffers[i]->address != field2_addr &&
957 render_buffers[i] != displayed_render_buffer ) {
958 /* Never throw away the current "front buffer(s)" */
959 result = render_buffers[i];
960 if( !result->flushed && result->address != -1 ) {
961 pvr2_render_buffer_copy_to_sh4( result );
962 }
963 if( result->width != width || result->height != height ) {
964 display_driver->destroy_render_buffer(render_buffers[i]);
965 result = display_driver->create_render_buffer(width,height,0);
966 render_buffers[i] = result;
967 }
968 break;
969 }
970 }
971 } else {
972 result = display_driver->create_render_buffer(width,height,0);
973 if( result != NULL ) {
974 render_buffers[render_buffer_count++] = result;
975 }
976 }
977 }
979 if( result != NULL ) {
980 result->address = render_addr;
981 }
982 return result;
983 }
985 /**
986 * Allocate a render buffer based on the current rendering settings
987 */
988 render_buffer_t pvr2_next_render_buffer()
989 {
990 render_buffer_t result = NULL;
991 uint32_t render_addr = MMIO_READ( PVR2, RENDER_ADDR1 );
992 uint32_t render_mode = MMIO_READ( PVR2, RENDER_MODE );
993 uint32_t render_scale = MMIO_READ( PVR2, RENDER_SCALER );
994 uint32_t render_stride = MMIO_READ( PVR2, RENDER_SIZE ) << 3;
996 int width = pvr2_scene_buffer_width();
997 int height = pvr2_scene_buffer_height();
998 int colour_format = render_colour_formats[render_mode&0x07];
1000 if( render_addr & 0x01000000 ) { /* vram64 */
1001 render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE_INT;
1002 } else { /* vram32 */
1003 render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE;
1004 }
1005 result = pvr2_alloc_render_buffer( render_addr, width, height );
1007 /* Setup the buffer */
1008 if( result != NULL ) {
1009 result->rowstride = render_stride;
1010 result->colour_format = colour_format;
1011 result->scale = render_scale;
1012 result->size = width * height * colour_formats[colour_format].bpp;
1013 result->flushed = FALSE;
1014 result->inverted = TRUE; // render buffers are inverted normally
1015 }
1016 return result;
1017 }
1019 static render_buffer_t pvr2_frame_buffer_to_render_buffer( frame_buffer_t frame )
1020 {
1021 render_buffer_t result = pvr2_alloc_render_buffer( frame->address, frame->width, frame->height );
1022 if( result != NULL ) {
1023 int bpp = colour_formats[frame->colour_format].bpp;
1024 result->rowstride = frame->rowstride;
1025 result->colour_format = frame->colour_format;
1026 result->scale = 0x400;
1027 result->size = frame->width * frame->height * bpp;
1028 result->flushed = TRUE;
1029 result->inverted = frame->inverted;
1030 display_driver->load_frame_buffer( frame, result );
1031 }
1032 return result;
1033 }
1036 /**
1037 * Invalidate any caching on the supplied address. Specifically, if it falls
1038 * within any of the render buffers, flush the buffer back to PVR2 ram.
1039 */
1040 gboolean pvr2_render_buffer_invalidate( sh4addr_t address, gboolean isWrite )
1041 {
1042 int i;
1043 address = address & 0x1FFFFFFF;
1044 for( i=0; i<render_buffer_count; i++ ) {
1045 uint32_t bufaddr = render_buffers[i]->address;
1046 if( bufaddr != -1 && bufaddr <= address &&
1047 (bufaddr + render_buffers[i]->size) > address ) {
1048 if( !render_buffers[i]->flushed ) {
1049 pvr2_render_buffer_copy_to_sh4( render_buffers[i] );
1050 }
1051 if( isWrite ) {
1052 render_buffers[i]->address = -1; /* Invalid */
1053 }
1054 return TRUE; /* should never have overlapping buffers */
1055 }
1056 }
1057 return FALSE;
1058 }
.