Author: hselasky
Date: Tue Mar 3 10:21:54 2015
New Revision: 279563
URL: https://svnweb.freebsd.org/changeset/base/279563
Log:
Add quirk for USB 3.0 controllers which don't support 64-bit DMA.
MFC after: 3 days
Submitted by: Gary Jennejohn <gljennj...@gmail.com>
Modified:
head/sys/dev/usb/controller/xhci_pci.c
Modified: head/sys/dev/usb/controller/xhci_pci.c
==============================================================================
--- head/sys/dev/usb/controller/xhci_pci.c Tue Mar 3 10:11:58 2015
(r279562)
+++ head/sys/dev/usb/controller/xhci_pci.c Tue Mar 3 10:21:54 2015
(r279563)
@@ -180,6 +180,7 @@ xhci_pci_attach(device_t self)
{
struct xhci_softc *sc = device_get_softc(self);
int count, err, rid;
+ uint8_t usedma32;
rid = PCI_XHCI_CBMEM;
sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
@@ -192,7 +193,17 @@ xhci_pci_attach(device_t self)
sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
sc->sc_io_size = rman_get_size(sc->sc_io_res);
- if (xhci_init(sc, self, 0)) {
+ /* check for USB 3.0 controllers which don't support 64-bit DMA */
+ switch (pci_get_devid(self)) {
+ case 0x01941033: /* NEC uPD720200 USB 3.0 controller */
+ usedma32 = 1;
+ break;
+ default:
+ usedma32 = 0;
+ break;
+ }
+
+ if (xhci_init(sc, self, usedma32)) {
device_printf(self, "Could not initialize softc\n");
bus_release_resource(self, SYS_RES_MEMORY, PCI_XHCI_CBMEM,
sc->sc_io_res);
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