lxdream 0.9.1| filename | src/pvr2/pvr2.c |
| changeset | 265:5daf59b7f31b |
| prev | 261:93fdb2a70e18 |
| next | 269:e41f9b1490d1 |
| author | nkeynes |
| date | Sat Jan 06 04:06:36 2007 +0000 (15 years ago) |
| permissions | -rw-r--r-- |
| last change | Implement event queue. Fix pvr2 timing (yes, again). |
| file | annotate | diff | log | raw |
1.1 --- a/src/pvr2/pvr2.c Wed Jan 03 09:01:51 2007 +00001.2 +++ b/src/pvr2/pvr2.c Sat Jan 06 04:06:36 2007 +00001.3 @@ -1,5 +1,5 @@1.4 /**1.5 - * $Id: pvr2.c,v 1.34 2007-01-03 09:01:51 nkeynes Exp $1.6 + * $Id: pvr2.c,v 1.35 2007-01-06 04:06:36 nkeynes Exp $1.7 *1.8 * PVR2 (Video) Core module implementation and MMIO registers.1.9 *1.10 @@ -18,6 +18,7 @@1.11 #define MODULE pvr2_module1.13 #include "dream.h"1.14 +#include "eventq.h"1.15 #include "display.h"1.16 #include "mem.h"1.17 #include "asic.h"1.18 @@ -34,6 +35,10 @@1.19 static uint32_t pvr2_run_slice( uint32_t );1.20 static void pvr2_save_state( FILE *f );1.21 static int pvr2_load_state( FILE *f );1.22 +static void pvr2_update_raster_posn( uint32_t nanosecs );1.23 +static void pvr2_schedule_line_event( int eventid, int line );1.24 +static void pvr2_schedule_scanline_event( int eventid, int line );1.25 +uint32_t pvr2_get_sync_status();1.27 void pvr2_display_frame( void );1.29 @@ -60,10 +65,10 @@1.30 uint32_t frame_count;1.31 uint32_t line_count;1.32 uint32_t line_remainder;1.33 + uint32_t cycles_run; /* Cycles already executed prior to main time slice */1.34 uint32_t irq_vpos1;1.35 uint32_t irq_vpos2;1.36 uint32_t odd_even_field; /* 1 = odd, 0 = even */1.37 - gboolean retrace;1.39 /* timing */1.40 uint32_t dot_clock;1.41 @@ -74,6 +79,8 @@1.42 uint32_t hsync_width_ns;1.43 uint32_t front_porch_ns;1.44 uint32_t back_porch_ns;1.45 + uint32_t retrace_start_line;1.46 + uint32_t retrace_end_line;1.47 gboolean interlaced;1.48 struct video_timing timing;1.49 } pvr2_state;1.50 @@ -81,20 +88,39 @@1.51 struct video_buffer video_buffer[2];1.52 int video_buffer_idx = 0;1.54 +/**1.55 + * Event handler for the retrace callback (fires on line 0 normally)1.56 + */1.57 +static void pvr2_retrace_callback( int eventid ) {1.58 + asic_event( eventid );1.59 + pvr2_update_raster_posn(sh4r.slice_cycle);1.60 + pvr2_schedule_line_event( EVENT_RETRACE, 0 );1.61 +}1.62 +1.63 +/**1.64 + * Event handler for the scanline callbacks. Fires the corresponding1.65 + * ASIC event, and resets the timer for the next field.1.66 + */1.67 +static void pvr2_scanline_callback( int eventid ) {1.68 + asic_event( eventid );1.69 + pvr2_update_raster_posn(sh4r.slice_cycle);1.70 + if( eventid == EVENT_SCANLINE1 ) {1.71 + pvr2_schedule_scanline_event( eventid, pvr2_state.irq_vpos1 );1.72 + } else {1.73 + pvr2_schedule_scanline_event( eventid, pvr2_state.irq_vpos2 );1.74 + }1.75 +}1.76 +1.77 static void pvr2_init( void )1.78 {1.79 register_io_region( &mmio_region_PVR2 );1.80 register_io_region( &mmio_region_PVR2PAL );1.81 register_io_region( &mmio_region_PVR2TA );1.82 + register_event_callback( EVENT_RETRACE, pvr2_retrace_callback );1.83 + register_event_callback( EVENT_SCANLINE1, pvr2_scanline_callback );1.84 + register_event_callback( EVENT_SCANLINE2, pvr2_scanline_callback );1.85 video_base = mem_get_region_by_name( MEM_REGION_VIDEO );1.86 texcache_init();1.87 - pvr2_state.dot_clock = 27069;1.88 - pvr2_state.total_lines = pal_timing.total_lines;1.89 - pvr2_state.line_time_ns = pal_timing.line_time_ns;1.90 - pvr2_state.front_porch_ns = 12000;1.91 - pvr2_state.back_porch_ns = 4000;1.92 - pvr2_state.hsync_width_ns = 4000;1.93 - pvr2_state.vsync_lines = 5;1.94 pvr2_reset();1.95 pvr2_ta_reset();1.96 }1.97 @@ -103,10 +129,14 @@1.98 {1.99 pvr2_state.line_count = 0;1.100 pvr2_state.line_remainder = 0;1.101 + pvr2_state.cycles_run = 0;1.102 pvr2_state.irq_vpos1 = 0;1.103 pvr2_state.irq_vpos2 = 0;1.104 - pvr2_state.retrace = FALSE;1.105 pvr2_state.timing = ntsc_timing;1.106 + pvr2_state.dot_clock = PVR2_DOT_CLOCK;1.107 + pvr2_state.back_porch_ns = 4000;1.108 + mmio_region_PVR2_write( DISP_TOTAL, 0x0270035F );1.109 + mmio_region_PVR2_write( DISP_SYNCTIME, 0x07D6A53F );1.110 video_buffer_idx = 0;1.112 pvr2_ta_init();1.113 @@ -127,33 +157,41 @@1.114 return pvr2_ta_load_state(f);1.115 }1.117 +/**1.118 + * Update the current raster position to the given number of nanoseconds,1.119 + * relative to the last time slice. (ie the raster will be adjusted forward1.120 + * by nanosecs - nanosecs_already_run_this_timeslice)1.121 + */1.122 +static void pvr2_update_raster_posn( uint32_t nanosecs )1.123 +{1.124 + uint32_t old_line_count = pvr2_state.line_count;1.125 + if( pvr2_state.line_time_ns == 0 ) {1.126 + return; /* do nothing */1.127 + }1.128 + pvr2_state.line_remainder += (nanosecs - pvr2_state.cycles_run);1.129 + pvr2_state.cycles_run = nanosecs;1.130 + while( pvr2_state.line_remainder >= pvr2_state.line_time_ns ) {1.131 + pvr2_state.line_count ++;1.132 + pvr2_state.line_remainder -= pvr2_state.line_time_ns;1.133 + }1.134 +1.135 + if( pvr2_state.line_count >= pvr2_state.total_lines ) {1.136 + pvr2_state.line_count -= pvr2_state.total_lines;1.137 + if( pvr2_state.interlaced ) {1.138 + pvr2_state.odd_even_field = !pvr2_state.odd_even_field;1.139 + }1.140 + }1.141 + if( pvr2_state.line_count >= pvr2_state.retrace_end_line &&1.142 + (old_line_count < pvr2_state.retrace_end_line ||1.143 + old_line_count > pvr2_state.line_count) ) {1.144 + pvr2_display_frame();1.145 + }1.146 +}1.147 +1.148 static uint32_t pvr2_run_slice( uint32_t nanosecs )1.149 {1.150 - pvr2_state.line_remainder += nanosecs;1.151 - while( pvr2_state.line_remainder >= pvr2_state.line_time_ns ) {1.152 - pvr2_state.line_remainder -= pvr2_state.line_time_ns;1.153 -1.154 - pvr2_state.line_count++;1.155 - if( pvr2_state.line_count == pvr2_state.total_lines ) {1.156 - asic_event( EVENT_RETRACE );1.157 - pvr2_state.line_count = 0;1.158 - pvr2_state.retrace = TRUE;1.159 - }1.160 -1.161 - if( pvr2_state.line_count == pvr2_state.irq_vpos1 ) {1.162 - asic_event( EVENT_SCANLINE1 );1.163 - }1.164 - if( pvr2_state.line_count == pvr2_state.irq_vpos2 ) {1.165 - asic_event( EVENT_SCANLINE2 );1.166 - }1.167 -1.168 - if( pvr2_state.line_count == pvr2_state.timing.retrace_lines ) {1.169 - if( pvr2_state.retrace ) {1.170 - pvr2_display_frame();1.171 - pvr2_state.retrace = FALSE;1.172 - }1.173 - }1.174 - }1.175 + pvr2_update_raster_posn( nanosecs );1.176 + pvr2_state.cycles_run = 0;1.177 return nanosecs;1.178 }1.180 @@ -273,9 +311,10 @@1.181 case DISP_ADDR1:1.182 val &= 0x00FFFFFC;1.183 MMIO_WRITE( PVR2, reg, val );1.184 - if( pvr2_state.retrace ) {1.185 + pvr2_update_raster_posn(sh4r.slice_cycle);1.186 + if( pvr2_state.line_count >= pvr2_state.retrace_start_line ||1.187 + pvr2_state.line_count < pvr2_state.retrace_end_line ) {1.188 pvr2_display_frame();1.189 - pvr2_state.retrace = FALSE;1.190 }1.191 break;1.192 case DISP_ADDR2:1.193 @@ -301,6 +340,9 @@1.194 val = val & 0x03FF03FF;1.195 pvr2_state.irq_vpos1 = (val >> 16);1.196 pvr2_state.irq_vpos2 = val & 0x03FF;1.197 + pvr2_update_raster_posn(sh4r.slice_cycle);1.198 + pvr2_schedule_scanline_event( EVENT_SCANLINE1, pvr2_state.irq_vpos1 );1.199 + pvr2_schedule_scanline_event( EVENT_SCANLINE2, pvr2_state.irq_vpos2 );1.200 MMIO_WRITE( PVR2, reg, val );1.201 break;1.202 case RENDER_NEARCLIP:1.203 @@ -359,9 +401,15 @@1.204 case DISP_TOTAL:1.205 val = val & 0x03FF03FF;1.206 MMIO_WRITE( PVR2, reg, val );1.207 + pvr2_update_raster_posn(sh4r.slice_cycle);1.208 pvr2_state.total_lines = (val >> 16) + 1;1.209 pvr2_state.line_size = (val & 0x03FF) + 1;1.210 pvr2_state.line_time_ns = 1000000 * pvr2_state.line_size / pvr2_state.dot_clock;1.211 + pvr2_state.retrace_end_line = 0x2A;1.212 + pvr2_state.retrace_start_line = pvr2_state.total_lines - 6;1.213 + pvr2_schedule_line_event( EVENT_RETRACE, 0 );1.214 + pvr2_schedule_scanline_event( EVENT_SCANLINE1, pvr2_state.irq_vpos1 );1.215 + pvr2_schedule_scanline_event( EVENT_SCANLINE2, pvr2_state.irq_vpos2 );1.216 break;1.217 case DISP_SYNCCFG:1.218 MMIO_WRITE( PVR2, reg, val&0x000003FF );1.219 @@ -456,50 +504,82 @@1.220 * 12 Horizontal sync off1.221 * 13 Vertical sync off1.222 * Note this method is probably incorrect for anything other than straight1.223 - * interlaced PAL, and needs further testing.1.224 + * interlaced PAL/NTSC, and needs further testing.1.225 */1.226 uint32_t pvr2_get_sync_status()1.227 {1.228 - uint32_t tmp = pvr2_state.line_remainder + sh4r.slice_cycle;1.229 - uint32_t line = pvr2_state.line_count + (tmp / pvr2_state.line_time_ns);1.230 - uint32_t remainder = tmp % pvr2_state.line_time_ns;1.231 - uint32_t field = pvr2_state.odd_even_field;1.232 - uint32_t result;1.233 + pvr2_update_raster_posn(sh4r.slice_cycle);1.234 + uint32_t result = pvr2_state.line_count;1.236 - if( line >= pvr2_state.total_lines ) {1.237 - line -= pvr2_state.total_lines;1.238 - if( pvr2_state.interlaced ) {1.239 - field == 1 ? 0 : 1;1.240 - }1.241 - }1.242 -1.243 - result = line;1.244 -1.245 - if( field ) {1.246 + if( pvr2_state.odd_even_field ) {1.247 result |= 0x0400;1.248 }1.249 - if( (line & 0x01) == field ) {1.250 - if( remainder > pvr2_state.hsync_width_ns ) {1.251 + if( (pvr2_state.line_count & 0x01) == pvr2_state.odd_even_field ) {1.252 + if( pvr2_state.line_remainder > pvr2_state.hsync_width_ns ) {1.253 result |= 0x1000; /* !HSYNC */1.254 }1.255 - if( line >= pvr2_state.vsync_lines ) {1.256 - if( remainder > pvr2_state.front_porch_ns ) {1.257 + if( pvr2_state.line_count >= pvr2_state.vsync_lines ) {1.258 + if( pvr2_state.line_remainder > pvr2_state.front_porch_ns ) {1.259 result |= 0x2800; /* Display active */1.260 } else {1.261 result |= 0x2000; /* Front porch */1.262 }1.263 }1.264 } else {1.265 - if( remainder < (pvr2_state.line_time_ns - pvr2_state.back_porch_ns) &&1.266 - line >= pvr2_state.vsync_lines ) {1.267 + if( pvr2_state.line_remainder < (pvr2_state.line_time_ns - pvr2_state.back_porch_ns) &&1.268 + pvr2_state.line_count >= pvr2_state.vsync_lines ) {1.269 result |= 0x3800; /* Display active */1.270 } else {1.271 result |= 0x1000; /* Back porch */1.272 }1.273 }1.274 +1.275 return result;1.276 }1.278 +/**1.279 + * Schedule an event for the start of the given line. If the line is actually1.280 + * the current line, schedules it for the next field.1.281 + * The raster position should be updated before calling this method.1.282 + */1.283 +static void pvr2_schedule_line_event( int eventid, int line )1.284 +{1.285 + uint32_t time;1.286 + if( line <= pvr2_state.line_count ) {1.287 + time = (pvr2_state.total_lines - pvr2_state.line_count + line) * pvr2_state.line_time_ns1.288 + - pvr2_state.line_remainder;1.289 + } else {1.290 + time = (line - pvr2_state.line_count) * pvr2_state.line_time_ns - pvr2_state.line_remainder;1.291 + }1.292 +1.293 + if( line < pvr2_state.total_lines ) {1.294 + event_schedule( eventid, time );1.295 + } else {1.296 + event_cancel( eventid );1.297 + }1.298 +}1.299 +1.300 +/**1.301 + * Schedule a "scanline" event. This actually goes off at1.302 + * 2 * line in even fields and 2 * line + 1 in odd fields.1.303 + * Otherwise this behaves as per pvr2_schedule_line_event().1.304 + * The raster position should be updated before calling this1.305 + * method.1.306 + */1.307 +static void pvr2_schedule_scanline_event( int eventid, int line )1.308 +{1.309 + uint32_t field = pvr2_state.odd_even_field;1.310 + if( line <= pvr2_state.line_count && pvr2_state.interlaced ) {1.311 + field = !field;1.312 + }1.313 +1.314 + line <<= 1;1.315 + if( field ) {1.316 + line += 1;1.317 + }1.318 + pvr2_schedule_line_event( eventid, line );1.319 +}1.320 +1.321 MMIO_REGION_READ_FN( PVR2, reg )1.322 {1.323 switch( reg ) {
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