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authorDuncan Laurie <dlaurie@chromium.org>2013-02-12 14:00:47 -0800
committerRonald G. Minnich <rminnich@gmail.com>2013-03-17 22:51:05 +0100
commit645b376ec82c5343bd197f04fa9e7bb53ee23d69 (patch)
tree6a6234b0a67f57ec240c093410d289f63a345fbc /src
parent8aa210bbf0343b1da1ab4e164c22da13c985a796 (diff)
downloadcoreboot-645b376ec82c5343bd197f04fa9e7bb53ee23d69.tar.xz
Pantherpoint: Add XHCI device init
This enables power management and clock gating on XHCI. Change-Id: I124ea6c5aca034b7ec4b5286d971c2adfce25c88 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: http://review.coreboot.org/2761 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src')
-rw-r--r--src/southbridge/intel/bd82x6x/Makefile.inc1
-rw-r--r--src/southbridge/intel/bd82x6x/usb_xhci.c81
2 files changed, 82 insertions, 0 deletions
diff --git a/src/southbridge/intel/bd82x6x/Makefile.inc b/src/southbridge/intel/bd82x6x/Makefile.inc
index 0b0385b46f..e921bc1d72 100644
--- a/src/southbridge/intel/bd82x6x/Makefile.inc
+++ b/src/southbridge/intel/bd82x6x/Makefile.inc
@@ -29,6 +29,7 @@ ramstage-y += pci.c
ramstage-y += pcie.c
ramstage-y += sata.c
ramstage-y += usb_ehci.c
+ramstage-y += usb_xhci.c
ramstage-y += me.c
ramstage-y += me_8.x.c
ramstage-y += smbus.c
diff --git a/src/southbridge/intel/bd82x6x/usb_xhci.c b/src/southbridge/intel/bd82x6x/usb_xhci.c
new file mode 100644
index 0000000000..2b8ae28b46
--- /dev/null
+++ b/src/southbridge/intel/bd82x6x/usb_xhci.c
@@ -0,0 +1,81 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include "pch.h"
+#include <usbdebug.h>
+#include <arch/io.h>
+
+static void usb_xhci_init(struct device *dev)
+{
+ u32 reg32;
+
+ printk(BIOS_DEBUG, "XHCI: Setting up controller.. ");
+
+ /* lock overcurrent map */
+ reg32 = pci_read_config32(dev, 0x44);
+ reg32 |= 1;
+ pci_write_config32(dev, 0x44, reg32);
+
+ /* Enable clock gating */
+ reg32 = pci_read_config32(dev, 0x40);
+ reg32 &= ~((1 << 20) | (1 << 21));
+ reg32 |= (1 << 19) | (1 << 18) | (1 << 17);
+ reg32 |= (1 << 10) | (1 << 9) | (1 << 8);
+ reg32 |= (1 << 31); /* lock */
+ pci_write_config32(dev, 0x40, reg32);
+
+ printk(BIOS_DEBUG, "done.\n");
+}
+
+static void xhci_set_subsystem(device_t dev, unsigned vendor, unsigned device)
+{
+ if (!vendor || !device) {
+ pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
+ pci_read_config32(dev, PCI_VENDOR_ID));
+ } else {
+ pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
+ ((device & 0xffff) << 16) | (vendor & 0xffff));
+ }
+}
+
+static struct pci_operations xhci_pci_ops = {
+ .set_subsystem = xhci_set_subsystem,
+};
+
+static struct device_operations usb_xhci_ops = {
+ .read_resources = pci_dev_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .init = usb_xhci_init,
+ .scan_bus = 0,
+ .ops_pci = &xhci_pci_ops,
+};
+
+static const unsigned short pci_device_ids[] = { 0x1e31, 0 };
+
+static const struct pci_driver pch_usb_xhci __pci_driver = {
+ .ops = &usb_xhci_ops,
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .devices = pci_device_ids,
+};