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Diff for /funnyos/arch/testarm/dev/tartc.c between version 1.4 and 1.5

version 1.4, 2007/11/04 22:55:58 version 1.5, 2007/11/06 22:57:45
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 #include <sys/device.h>  #include <sys/device.h>
 #include <sys/bus.h>  #include <sys/bus.h>
   
   #include <sys/kern_time.h>
 #include <arch/testarm/dev/tartcvar.h>  #include <arch/testarm/dev/tartcvar.h>
 #include <arch/testarm/dev/tartcreg.h>  #include <arch/testarm/dev/tartcreg.h>
 #include <libkern/printf.h>  #include <libkern/printf.h>
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  */   */
 int     tartc_attach(struct device *, uint32_t loc, uint8_t flags);  int     tartc_attach(struct device *, uint32_t loc, uint8_t flags);
 void    tartc_interrupt(struct device *);  void    tartc_interrupt(struct device *);
   void    tartc_sethz(uint8_t hz);
   uint32_t tartc_getsec(void);
   uint32_t tartc_getusec(void);
   
   
   /* default tartc device to use; will bind to first tartc instance */
   struct tartc_dd *tartcdd = NULL;
   extern struct rtcops sysrtcops;
   
 struct driver tartc_dr = {  struct driver tartc_dr = {
         sizeof(struct tartc_dd),          sizeof(struct tartc_dd),
         tartc_attach,          tartc_attach,
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         printf("testarm Real Time Clock (%d seconds past Epoch)\n", seconds);          printf("testarm Real Time Clock (%d seconds past Epoch)\n", seconds);
   
         /* XXX set timer */          /* set default tartc */
         bus_write_1(ddp->td_bushandlep, ddp->td_ioaddr + TARTC_OFF_TMRINTRFREQ, 1);          tartcdd = ddp;
   
           /* fill-in rtcops to be used by kern_time */
           sysrtcops.ro_sethz = tartc_sethz;
           sysrtcops.ro_getsec = tartc_getsec;
           sysrtcops.ro_getusec = tartc_getusec;
   
         return(0);          return(0);
   
 }  }
   
   
 void  void
 tartc_interrupt(struct device *self)  tartc_sethz(uint8_t hz)
 {  {
         /* TODO */          /*
         struct tartc_dd *ddp = self->dv_devdata;           * Set timer frequency.
            */
           if (tartcdd == NULL)
                   panic("can't calibrate not configured timer\n");
   
         /* acknowledge one timer intr */          bus_write_1(tartcdd->td_bushandlep, tartcdd->td_ioaddr + TARTC_OFF_TMRINTRFREQ, hz);
         bus_write_1(ddp->td_bushandlep, ddp->td_ioaddr + TARTC_OFF_TMRINTRACK, 0xff);  }
   
   
   uint32_t
   tartc_getsec(void)
   {
         /*          /*
          * Update seconds and print it.           * Get seconds.
          */           */
         bus_write_1(ddp->td_bushandlep, ddp->td_ioaddr + TARTC_OFF_CLOCKUPDATE, 0xff);          if (tartcdd == NULL)
         printf("tartc intr: %d seconds past Epoch\n",                  panic("tartc_getsec: can't get seconds from rtc: default device not configured\n");
                 bus_read_4(ddp->td_bushandlep, ddp->td_ioaddr + TARTC_OFF_READSECONDS));  
   
         printf("tartc intr\n");          /* trigger clock update on host */
           bus_write_1(tartcdd->td_bushandlep, tartcdd->td_ioaddr + TARTC_OFF_CLOCKUPDATE, 1);
   
           return( bus_read_4(tartcdd->td_bushandlep, tartcdd->td_ioaddr + TARTC_OFF_READSECONDS) );
   }
   
   
   uint32_t
   tartc_getusec(void)
   {
           /*
            * Get microseconds.
            */
           if (tartcdd == NULL)
                   panic("tartc_getusec: can't get microseconds from rtc: default device not configured\n");
   
           /* trigger clock update on host */
           bus_write_1(tartcdd->td_bushandlep, tartcdd->td_ioaddr + TARTC_OFF_CLOCKUPDATE, 1);
   
           return( bus_read_4(tartcdd->td_bushandlep, tartcdd->td_ioaddr + TARTC_OFF_READUSECONDS) );
   }
   
   
   void
   tartc_interrupt(struct device *self)
   {
           struct tartc_dd *ddp = self->dv_devdata;
   
           /* process system tick */
           sysclock();
   
           /* acknowledge one timer intr */
           bus_write_1(ddp->td_bushandlep, ddp->td_ioaddr + TARTC_OFF_TMRINTRACK, 0xff);
 }  }
   
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  Added in v.1.5
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