void
cwinit(Device *dev)
{
	Cw *cw;
	Cache *h;
	Iobuf *cb, *p;
	long l, m;

	cwinit1(dev);

	cw = dev->private;
	l = devsize(cw->wdev);
	cb = getbuf(cw->cdev, CACHE_ADDR, Bread|Bmod|Bres);
	if(!cb || checktag(cb, Tcache, QPSUPER))		/* AFEB */
		panic("cwinit: checktag c bucket");	/* AFEB */
	h = (Cache*)cb->iobuf;
	h->toytime = toytime() + SECOND(30);
	h->time = time();
	m = h->wsize;
	if(l != m) {
		print("wdev changed size %ld to %ld\n", m, l);
		h->wsize = l;
		cb->flags |= Bmod;
	}

	for(m=0; m<h->msize; m++) {
		print("cwinit reading/checking %ld of %ld <r", m, h->msize); /* AFEB DEBUG*/
		p = getbuf(cw->cdev, h->maddr + m/BKPERBLK, Bread);
		print("><c");
		if(!p || checktag(p, Tbuck, h->maddr + m/BKPERBLK))
			panic("cwinit: checktag c bucket");
		print("><w");
		putbuf(p);
		print(">\n");
	}
	putbuf(cb);
}