USB woes.

[Thorsten Greiner]

* Ian FREISLICH <if at hetzner.co.za> [2004-06-15 12:31]:
> Do any of the USB gurus have any ideas?

I hardly count as a guru, but you may want to try a little patch
derived from the NetBSD usb stack which turns on bus mastering. This
patch is needed on my little ASUS notebook to make USB work
properly. Maybe it works in your case too, since the symptoms are
similar.

The file to patch is /usr/src/sys/dev/usb/uhci_pci.c.

Cheers
        -Thorsten

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-------------- next part --------------
--- uhci_pci.c.orig	Wed Aug 28 22:24:49 2002
+++ uhci_pci.c	Wed Jan 15 00:49:13 2003
@@ -224,6 +224,7 @@
 	uhci_softc_t *sc = device_get_softc(self);
 	int rid;
 	int err;
+	u_int32_t csr;
 
 	rid = PCI_UHCI_BASE_REG;
 	sc->io_res = bus_alloc_resource(self, SYS_RES_IOPORT, &rid,
@@ -282,6 +283,11 @@
 		sc->sc_bus.usbrev = USBREV_UNKNOWN;
 		break;
 	}
+
+	/* Enable the device. */
+	csr = pci_read_config(self, PCIR_COMMAND, 4);
+	pci_write_config(self, PCIR_COMMAND, 
+		csr | PCIM_CMD_BUSMASTEREN, 4);
 
 	err = bus_setup_intr(self, sc->irq_res, INTR_TYPE_BIO,
 	    (driver_intr_t *) uhci_intr, sc, &sc->ih);
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