"Steven M. Bellovin" <smb@research.att.com> writes:

> How do I assign it the necessary I/O space?

I'm sure someone will point out why this untested code will not
work. :-)

/Johan

--- viaenv.c	2002/10/02 16:51:59	1.9
+++ viaenv.c	2002/11/15 10:56:41
@@ -280,13 +280,27 @@
 
 	iobase = pci_conf_read(va->va_pc, va->va_tag, va->va_offset);
 	control = pci_conf_read(va->va_pc, va->va_tag, va->va_offset + 4);
-	if ((iobase & 0xff80) == 0 || (control & 1) == 0) {
-		printf(": disabled\n");
+	sc->sc_iot = va->va_iot;
+	if ((iobase & 0xff80) == 0) {
+		bus_addr_t addr;
+		if(bus_space_alloc(sc->sc_iot, 0, 0xffff, 128, 128, 0, 0,
+				   &addr, &sc->sc_ioh) != 0) {
+			printf(": failed to allocate memory region\n");
 		return;
 	}
-	sc->sc_iot = va->va_iot;
-	if (bus_space_map(sc->sc_iot, iobase & 0xff80, 128, 0, &sc->sc_ioh)) {
+		DPRINTF((": I/O address is %x\n", iobase));
+		DPRINTF(("%s", sc->sc_dev.dv_xname));
+		pci_conf_write(va->va_pc, va->va_tag, va->va_offset, addr);
+	} else {
+		if (bus_space_map(sc->sc_iot, iobase & 0xff80, 128, 0, 
+				  &sc->sc_ioh)) {
 		printf(": failed to map i/o\n");
+			return;
+		}
+	}
+	if ((control & 1) == 0) {
+		pci_conf_write(va->va_pc, va->va_tag, va->va_offset + 4, 
+			       control | 1);
 		return;
 	}
 	printf("\n");