igbepci

static void
igbepci(void)
{
	int cls;
	Pcidev *p;
	Ctlr *ctlr;
	void *mem;

	p = nil;
	while(p = pcimatch(p, 0, 0)){
		if(p->ccrb != 0x02 || p->ccru != 0)
			continue;

		switch((p->did<<16)|p->vid){
		default:
			continue;
		case i82543gc:
		case i82544ei:
		case i82544eif:
		case i82544gc:
		case i82547ei:
		case i82540em:
		case i82540eplp:
		case i82541gi:
		case i82547gi:
		case i82541gi2:
		case i82541pi:
		case i82545em:
		case i82545gmc:
		case i82546gb:
		case i82546eb:
			break;
		}

		mem = vmap(p->mem[0].bar & ~0x0F, p->mem[0].size);
		if(mem == nil){
			print("igbe: can't map %8.8luX\n", p->mem[0].bar);
			continue;
		}
		cls = pcicfgr8(p, PciCLS);
		switch(cls){
			default:
				print("igbe: unexpected CLS - %d\n", cls*4);
				break;
			case 0x00:
			case 0xFF:
				print("igbe: unusable CLS - %d\n", cls*4);
/*
				continue;
 */
#define CACHELINESZ 32
				cls = CACHELINESZ / sizeof(long);
				pcicfgw8(p, PciCLS, cls);
				break;
			case 0x08:
			case 0x10:
				break;
		}
		ctlr = malloc(sizeof(Ctlr));
		ctlr->port = p->mem[0].bar & ~0x0F;
		ctlr->pcidev = p;
		ctlr->id = (p->did<<16)|p->vid;
		ctlr->cls = cls*4;
		ctlr->nic = mem;

		if(igbereset(ctlr)){
			free(ctlr);
			vunmap(mem, p->mem[0].size);
			continue;
		}
		pcisetbme(p);

		if(igbectlrhead != nil)
			igbectlrtail->next = ctlr;
		else
			igbectlrhead = ctlr;
		igbectlrtail = ctlr;
	}
}