2001/0830/pc/mp.c (diff list | history)

2001/0527/sys/src/9/pc/mp.c:462,467 – 2001/0830/sys/src/9/pc/mp.c:462,469 (short | long | prev | next)
1997/0327		void mpinit(void) {
2001/0830		int ncpu; char *cp;
1997/0327		PCMP *pcmp; uchar *e, *p;
1997/0405		Apic *apic, *bpapic;
2001/0527/sys/src/9/pc/mp.c:562,572 – 2001/0830/sys/src/9/pc/mp.c:564,585
1997/0405		/* * Initialise the application processors. */
2001/0830		if(cp = getconf("*ncpu")){ ncpu = strtol(cp, 0, 0); if(ncpu < 1) ncpu = 1; } else ncpu = MaxAPICNO;
1997/0405		memmove((void*)APBOOTSTRAP, apbootstrap, sizeof(apbootstrap)); for(apic = mpapic; apic <= &mpapic[MaxAPICNO]; apic++){
2001/0830		if(ncpu <= 1) break;
1999/0402		if((apic->flags & (PcmpBP|PcmpEN)) == PcmpEN
2001/0527		&& apic->type == PcmpPROCESSOR)
2001/0830		&& apic->type == PcmpPROCESSOR){
1997/0405		mpstartap(apic);
2001/0830		ncpu--; }
1997/0327		} /*
2001/0527/sys/src/9/pc/mp.c:631,647 – 2001/0830/sys/src/9/pc/mp.c:644,674
1998/0910		continue; /*
1999/0402		* Check not already enabled. This is a bad thing as it implies * the same device is requesting the same interrupt to be * enabled multiple times. The RDT read here is safe for now * as currently interrupts are never disabled once enabled.
2001/0830		* Check if already enabled. Multifunction devices may share * INT[A-D]# so, if already enabled, check the polarity matches * and the trigger is level. * * Should check the devices differ only in the function number, * but that can wait for the planned enable/disable rewrite. * The RDT read here is safe for now as currently interrupts * are never disabled once enabled.
1998/0910		*/ apic = aintr->apic; ioapicrdtr(apic, aintr->intr->intin, 0, &lo); if(!(lo & ApicIMASK)){
1999/0402		print("mpintrenable: multiple enable irq%d, tbdf %uX\n", v->irq, tbdf);
1998/0910		return -1;
2001/0830		vno = lo & 0xFF; n = mpintrinit(bus, aintr->intr, vno, v->irq); n |= ApicLOGICAL; if(n != lo || !(n & ApicLEVEL)){ print("mpintrenable: multiple botch irq%d, tbdf %uX, lo %8.8uX, n %8.8uX\n", v->irq, tbdf, lo, n); return -1; } v->isr = lapicisr; v->eoi = lapiceoi; return vno;
1997/0327		}
1998/0910		/*