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filename src/sh4/timer.c
changeset 736:a02d1475ccfd
prev619:0800a0137472
next859:b941c703ccd6
author nkeynes
date Sat Aug 09 07:39:47 2008 +0000 (15 years ago)
permissions -rw-r--r--
last change Fix ITLB lookup ASID behaviour (was somewhat back-to-front)
file annotate diff log raw 
     1.1 --- a/src/sh4/timer.c	Wed Jan 30 09:38:24 2008 +0000

     1.2 +++ b/src/sh4/timer.c	Sat Aug 09 07:39:47 2008 +0000

     1.3 @@ -55,23 +55,23 @@

     1.4      uint32_t div;

     1.5      switch( reg ) {

     1.6      case FRQCR: /* Frequency control */

     1.7 -	div = ifc_divider[(val >> 6) & 0x07];

     1.8 -	sh4_cpu_freq = sh4_input_freq / div;

     1.9 -	sh4_cpu_period = sh4_cpu_multiplier * div / sh4_input_freq;

    1.10 -	div = ifc_divider[(val >> 3) & 0x07];

    1.11 -	sh4_bus_freq = sh4_input_freq / div;

    1.12 -	sh4_bus_period = 1000 * div / sh4_input_freq;

    1.13 -	div = pfc_divider[val & 0x07];

    1.14 -	sh4_peripheral_freq = sh4_input_freq / div;

    1.15 -	sh4_peripheral_period = 1000 * div / sh4_input_freq;

    1.16 +        div = ifc_divider[(val >> 6) & 0x07];

    1.17 +        sh4_cpu_freq = sh4_input_freq / div;

    1.18 +        sh4_cpu_period = sh4_cpu_multiplier * div / sh4_input_freq;

    1.19 +        div = ifc_divider[(val >> 3) & 0x07];

    1.20 +        sh4_bus_freq = sh4_input_freq / div;

    1.21 +        sh4_bus_period = 1000 * div / sh4_input_freq;

    1.22 +        div = pfc_divider[val & 0x07];

    1.23 +        sh4_peripheral_freq = sh4_input_freq / div;

    1.24 +        sh4_peripheral_period = 1000 * div / sh4_input_freq;

    1.25  

    1.26 -	/* Update everything that depends on the peripheral frequency */

    1.27 -	SCIF_update_line_speed();

    1.28 -	break;

    1.29 +        /* Update everything that depends on the peripheral frequency */

    1.30 +        SCIF_update_line_speed();

    1.31 +        break;

    1.32      case WTCSR: /* Watchdog timer */

    1.33 -	break;

    1.34 +        break;

    1.35      }

    1.36 -	

    1.37 +

    1.38      MMIO_WRITE( CPG, reg, val );

    1.39  }

    1.40  

    1.41 @@ -136,14 +136,14 @@

    1.42  {

    1.43      switch( reg ) {

    1.44      case TCNT0:

    1.45 -	TMU_count( 0, sh4r.slice_cycle );

    1.46 -	break;

    1.47 +        TMU_count( 0, sh4r.slice_cycle );

    1.48 +        break;

    1.49      case TCNT1:

    1.50 -	TMU_count( 1, sh4r.slice_cycle );

    1.51 -	break;

    1.52 +        TMU_count( 1, sh4r.slice_cycle );

    1.53 +        break;

    1.54      case TCNT2:

    1.55 -	TMU_count( 2, sh4r.slice_cycle );

    1.56 -	break;

    1.57 +        TMU_count( 2, sh4r.slice_cycle );

    1.58 +        break;

    1.59      }

    1.60      return MMIO_READ( TMU, reg );

    1.61  }

    1.62 @@ -154,45 +154,45 @@

    1.63      uint32_t oldtcr = MMIO_READ( TMU, TCR0 + (12*timer) );

    1.64  

    1.65      if( (oldtcr & TCR_UNF) == 0 ) {

    1.66 -	tcr = tcr & (~TCR_UNF);

    1.67 +        tcr = tcr & (~TCR_UNF);

    1.68      } else {

    1.69 -	if( ((oldtcr & TCR_UNIE) == 0) && 

    1.70 -	    (tcr & TCR_IRQ_ACTIVE) == TCR_IRQ_ACTIVE ) {

    1.71 -	    intc_raise_interrupt( INT_TMU_TUNI0 + timer );

    1.72 -	} else if( (oldtcr & TCR_UNIE) != 0 && 

    1.73 -		   (tcr & TCR_IRQ_ACTIVE) != TCR_IRQ_ACTIVE ) {

    1.74 -	    intc_clear_interrupt( INT_TMU_TUNI0 + timer );

    1.75 -	}

    1.76 +        if( ((oldtcr & TCR_UNIE) == 0) && 

    1.77 +                (tcr & TCR_IRQ_ACTIVE) == TCR_IRQ_ACTIVE ) {

    1.78 +            intc_raise_interrupt( INT_TMU_TUNI0 + timer );

    1.79 +        } else if( (oldtcr & TCR_UNIE) != 0 && 

    1.80 +                (tcr & TCR_IRQ_ACTIVE) != TCR_IRQ_ACTIVE ) {

    1.81 +            intc_clear_interrupt( INT_TMU_TUNI0 + timer );

    1.82 +        }

    1.83      }

    1.84  

    1.85      switch( tcr & 0x07 ) {

    1.86      case 0:

    1.87 -	period = sh4_peripheral_period << 2 ;

    1.88 -	break;

    1.89 +        period = sh4_peripheral_period << 2 ;

    1.90 +        break;

    1.91      case 1: 

    1.92 -	period = sh4_peripheral_period << 4;

    1.93 -	break;

    1.94 +        period = sh4_peripheral_period << 4;

    1.95 +        break;

    1.96      case 2:

    1.97 -	period = sh4_peripheral_period << 6;

    1.98 -	break;

    1.99 +        period = sh4_peripheral_period << 6;

   1.100 +        break;

   1.101      case 3: 

   1.102 -	period = sh4_peripheral_period << 8;

   1.103 -	break;

   1.104 +        period = sh4_peripheral_period << 8;

   1.105 +        break;

   1.106      case 4:

   1.107 -	period = sh4_peripheral_period << 10;

   1.108 -	break;

   1.109 +        period = sh4_peripheral_period << 10;

   1.110 +        break;

   1.111      case 5:

   1.112 -	/* Illegal value. */

   1.113 -	ERROR( "TMU %d period set to illegal value (5)", timer );

   1.114 -	period = sh4_peripheral_period << 12; /* for something to do */

   1.115 -	break;

   1.116 +        /* Illegal value. */

   1.117 +        ERROR( "TMU %d period set to illegal value (5)", timer );

   1.118 +        period = sh4_peripheral_period << 12; /* for something to do */

   1.119 +        break;

   1.120      case 6:

   1.121 -	period = rtc_output_period;

   1.122 -	break;

   1.123 +        period = rtc_output_period;

   1.124 +        break;

   1.125      case 7:

   1.126 -	/* External clock... Hrm? */

   1.127 -	period = sh4_peripheral_period; /* I dunno... */

   1.128 -	break;

   1.129 +        /* External clock... Hrm? */

   1.130 +        period = sh4_peripheral_period; /* I dunno... */

   1.131 +        break;

   1.132      }

   1.133      TMU_timers[timer].timer_period = period;

   1.134  

   1.135 @@ -202,9 +202,9 @@

   1.136  void TMU_schedule_timer( int timer )

   1.137  {

   1.138      uint64_t duration = (uint64_t)((uint32_t)(MMIO_READ( TMU, TCNT0 + 12*timer )+1)) * 

   1.139 -	(uint64_t)TMU_timers[timer].timer_period - TMU_timers[timer].timer_remainder;

   1.140 +    (uint64_t)TMU_timers[timer].timer_period - TMU_timers[timer].timer_remainder;

   1.141      event_schedule_long( EVENT_TMU0+timer, (uint32_t)(duration / 1000000000), 

   1.142 -			 (uint32_t)(duration % 1000000000) );

   1.143 +                         (uint32_t)(duration % 1000000000) );

   1.144  }

   1.145  

   1.146  void TMU_start( int timer )

   1.147 @@ -229,26 +229,26 @@

   1.148  uint32_t TMU_count( int timer, uint32_t nanosecs ) 

   1.149  {

   1.150      uint32_t run_ns = nanosecs + TMU_timers[timer].timer_remainder -

   1.151 -	TMU_timers[timer].timer_run;

   1.152 +    TMU_timers[timer].timer_run;

   1.153      TMU_timers[timer].timer_remainder = 

   1.154 -	run_ns % TMU_timers[timer].timer_period;

   1.155 +        run_ns % TMU_timers[timer].timer_period;

   1.156      TMU_timers[timer].timer_run = nanosecs;

   1.157      uint32_t count = run_ns / TMU_timers[timer].timer_period;

   1.158      uint32_t value = MMIO_READ( TMU, TCNT0 + 12*timer );

   1.159      uint32_t reset = MMIO_READ( TMU, TCOR0 + 12*timer );

   1.160      if( count > value ) {

   1.161 -	uint32_t tcr = MMIO_READ( TMU, TCR0 + 12*timer );

   1.162 -	tcr |= TCR_UNF;

   1.163 -	count -= value;

   1.164 +        uint32_t tcr = MMIO_READ( TMU, TCR0 + 12*timer );

   1.165 +        tcr |= TCR_UNF;

   1.166 +        count -= value;

   1.167          value = reset - (count % reset) + 1;

   1.168 -	MMIO_WRITE( TMU, TCR0 + 12*timer, tcr );

   1.169 -	if( tcr & TCR_UNIE ) 

   1.170 -	    intc_raise_interrupt( INT_TMU_TUNI0 + timer );

   1.171 -	MMIO_WRITE( TMU, TCNT0 + 12*timer, value );

   1.172 -	TMU_schedule_timer(timer);

   1.173 +        MMIO_WRITE( TMU, TCR0 + 12*timer, tcr );

   1.174 +        if( tcr & TCR_UNIE ) 

   1.175 +            intc_raise_interrupt( INT_TMU_TUNI0 + timer );

   1.176 +        MMIO_WRITE( TMU, TCNT0 + 12*timer, value );

   1.177 +        TMU_schedule_timer(timer);

   1.178      } else {

   1.179 -	value -= count;

   1.180 -	MMIO_WRITE( TMU, TCNT0 + 12*timer, value );

   1.181 +        value -= count;

   1.182 +        MMIO_WRITE( TMU, TCNT0 + 12*timer, value );

   1.183      }

   1.184      return value;

   1.185  }

   1.186 @@ -259,45 +259,45 @@

   1.187      int i;

   1.188      switch( reg ) {

   1.189      case TSTR:

   1.190 -	oldval = MMIO_READ( TMU, TSTR );

   1.191 -	for( i=0; i<3; i++ ) {

   1.192 -	    uint32_t tmp = 1<<i;

   1.193 -	    if( (oldval & tmp) != 0 && (val&tmp) == 0  )

   1.194 -		TMU_stop(i);

   1.195 -	    else if( (oldval&tmp) == 0 && (val&tmp) != 0 )

   1.196 -		TMU_start(i);

   1.197 -	}

   1.198 -	break;

   1.199 +        oldval = MMIO_READ( TMU, TSTR );

   1.200 +        for( i=0; i<3; i++ ) {

   1.201 +            uint32_t tmp = 1<<i;

   1.202 +            if( (oldval & tmp) != 0 && (val&tmp) == 0  )

   1.203 +                TMU_stop(i);

   1.204 +            else if( (oldval&tmp) == 0 && (val&tmp) != 0 )

   1.205 +                TMU_start(i);

   1.206 +        }

   1.207 +        break;

   1.208      case TCR0:

   1.209 -	TMU_set_timer_control( 0, val );

   1.210 -	return;

   1.211 +        TMU_set_timer_control( 0, val );

   1.212 +        return;

   1.213      case TCR1:

   1.214 -	TMU_set_timer_control( 1, val );

   1.215 -	return;

   1.216 +        TMU_set_timer_control( 1, val );

   1.217 +        return;

   1.218      case TCR2:

   1.219 -	TMU_set_timer_control( 2, val );

   1.220 -	return;

   1.221 +        TMU_set_timer_control( 2, val );

   1.222 +        return;

   1.223      case TCNT0:

   1.224 -	MMIO_WRITE( TMU, reg, val );

   1.225 -	if( TMU_IS_RUNNING(0) ) { // reschedule

   1.226 -	    TMU_timers[0].timer_run = sh4r.slice_cycle;

   1.227 -	    TMU_schedule_timer( 0 );

   1.228 -	}

   1.229 -	return;

   1.230 +        MMIO_WRITE( TMU, reg, val );

   1.231 +        if( TMU_IS_RUNNING(0) ) { // reschedule

   1.232 +            TMU_timers[0].timer_run = sh4r.slice_cycle;

   1.233 +            TMU_schedule_timer( 0 );

   1.234 +        }

   1.235 +        return;

   1.236      case TCNT1:

   1.237 -	MMIO_WRITE( TMU, reg, val );

   1.238 -	if( TMU_IS_RUNNING(1) ) { // reschedule

   1.239 -	    TMU_timers[1].timer_run = sh4r.slice_cycle;

   1.240 -	    TMU_schedule_timer( 1 );

   1.241 -	}

   1.242 -	return;

   1.243 +        MMIO_WRITE( TMU, reg, val );

   1.244 +        if( TMU_IS_RUNNING(1) ) { // reschedule

   1.245 +            TMU_timers[1].timer_run = sh4r.slice_cycle;

   1.246 +            TMU_schedule_timer( 1 );

   1.247 +        }

   1.248 +        return;

   1.249      case TCNT2:

   1.250 -	MMIO_WRITE( TMU, reg, val );

   1.251 -	if( TMU_IS_RUNNING(2) ) { // reschedule

   1.252 -	    TMU_timers[2].timer_run = sh4r.slice_cycle;

   1.253 -	    TMU_schedule_timer( 2 );

   1.254 -	}

   1.255 -	return;

   1.256 +        MMIO_WRITE( TMU, reg, val );

   1.257 +        if( TMU_IS_RUNNING(2) ) { // reschedule

   1.258 +            TMU_timers[2].timer_run = sh4r.slice_cycle;

   1.259 +            TMU_schedule_timer( 2 );

   1.260 +        }

   1.261 +        return;

   1.262      }

   1.263      MMIO_WRITE( TMU, reg, val );

   1.264  }

   1.265 @@ -306,13 +306,13 @@

   1.266  {

   1.267      int tcr = MMIO_READ( TMU, TSTR );

   1.268      if( tcr & 0x01 ) {

   1.269 -	TMU_count( 0, nanosecs );

   1.270 +        TMU_count( 0, nanosecs );

   1.271      }

   1.272      if( tcr & 0x02 ) {

   1.273 -	TMU_count( 1, nanosecs );

   1.274 +        TMU_count( 1, nanosecs );

   1.275      }

   1.276      if( tcr & 0x04 ) {

   1.277 -	TMU_count( 2, nanosecs );

   1.278 +        TMU_count( 2, nanosecs );

   1.279      }

   1.280  }

   1.281
.