Home | History | Annotate | Line # | Download | only in netboot 
      1 /*	$NetBSD: getsecs.c,v 1.11 2013/11/03 01:02:37 christos Exp $	*/
      2 
      3 #include <sys/param.h>
      4 
      5 #include <machine/cpu.h>
      6 #include <netinet/in.h>
      7 #include <netinet/in_systm.h>
      8 
      9 #include <lib/libsa/stand.h>
     10 #include <lib/libsa/net.h>
     11 
     12 #include "include/prom.h"
     13 #include "include/rpb.h"
     14 
     15 satime_t
     16 getsecs(void)
     17 {
     18 	static uint64_t tnsec;
     19 	static uint64_t lastpcc;
     20 	uint64_t curpcc;
     21 
     22 	if (tnsec == 0) {
     23 		tnsec = 1;
     24 		lastpcc = alpha_rpcc() & 0xffffffff;
     25 
     26 #if 0
     27 		uint64_t wrapsecs = (0xffffffff /
     28 		    ((struct rpb *)HWRPB_ADDR)->rpb_cc_freq) + 1;
     29 		printf("getsecs: cc freq = %lu, time to wrap = %lu\n",
     30 		    ((struct rpb *)HWRPB_ADDR)->rpb_cc_freq, wrapsecs);
     31 #endif
     32 	}
     33 
     34 	curpcc = alpha_rpcc() & 0xffffffff;
     35 	if (curpcc < lastpcc)
     36 		curpcc += 0x100000000;
     37 
     38 	tnsec += ((curpcc - lastpcc) * 1000000000) / ((struct rpb *)HWRPB_ADDR)->rpb_cc_freq;
     39 	lastpcc = curpcc;
     40 
     41 	return (tnsec / 1000000000);
     42 }
     43