Stefan Reinauer (stefan.reinauer@coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2761
-gerrit
commit a390d707216d317176b6b10b0a0a0e17194c86af Author: Duncan Laurie dlaurie@chromium.org Date: Tue Feb 12 14:00:47 2013 -0800
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 --- src/southbridge/intel/bd82x6x/Makefile.inc | 1 + src/southbridge/intel/bd82x6x/usb_xhci.c | 81 ++++++++++++++++++++++++++++++ 2 files changed, 82 insertions(+)
diff --git a/src/southbridge/intel/bd82x6x/Makefile.inc b/src/southbridge/intel/bd82x6x/Makefile.inc index 0b0385b..e921bc1 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 0000000..2b8ae28 --- /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, +};