From b000513741d330947bb832a5835378e35bdfb394 Mon Sep 17 00:00:00 2001 From: Lee Leahy Date: Tue, 12 May 2015 18:19:47 -0700 Subject: soc/intel/skylake: Use Broadwell as comparision base for Skylake SOC Use the Broadwell implementation as the comparison base for Skylake. BRANCH=none BUG=None TEST=None Change-Id: I22eb55ea89eb0d6883f98e4c72a6d243e819e6d8 Signed-off-by: Lee Leahy Reviewed-on: http://review.coreboot.org/10340 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/soc/intel/skylake/ehci.c | 103 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 src/soc/intel/skylake/ehci.c (limited to 'src/soc/intel/skylake/ehci.c') diff --git a/src/soc/intel/skylake/ehci.c b/src/soc/intel/skylake/ehci.c new file mode 100644 index 0000000000..3073a54a2e --- /dev/null +++ b/src/soc/intel/skylake/ehci.c @@ -0,0 +1,103 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * Copyright (C) 2014 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 +#include +#include +#include +#include +#include +#include +#include + +static void usb_ehci_set_subsystem(device_t dev, unsigned vendor, unsigned device) +{ + u8 access_cntl; + + access_cntl = pci_read_config8(dev, 0x80); + + /* Enable writes to protected registers. */ + pci_write_config8(dev, 0x80, access_cntl | 1); + + 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)); + } + + /* Restore protection. */ + pci_write_config8(dev, 0x80, access_cntl); +} + +static void usb_ehci_set_resources(struct device *dev) +{ +#if CONFIG_USBDEBUG + struct resource *res; + u32 base; + u32 usb_debug; + + usb_debug = get_ehci_debug(); + set_ehci_debug(0); +#endif + pci_dev_set_resources(dev); + +#if CONFIG_USBDEBUG + res = find_resource(dev, 0x10); + set_ehci_debug(usb_debug); + if (!res) return; + base = res->base; + set_ehci_base(base); + report_resource_stored(dev, res, ""); +#endif +} + +static void ehci_enable(struct device *dev) +{ + if (CONFIG_USBDEBUG) + dev->enabled = 1; + else + pch_disable_devfn(dev); +} + +static struct pci_operations ehci_ops_pci = { + .set_subsystem = &usb_ehci_set_subsystem, +}; + +static struct device_operations usb_ehci_ops = { + .read_resources = &pci_dev_read_resources, + .set_resources = &usb_ehci_set_resources, + .enable_resources = &pci_dev_enable_resources, + .ops_pci = &ehci_ops_pci, + .enable = &ehci_enable, +}; + +static const unsigned short pci_device_ids[] = { + 0x9c26, /* LynxPoint-LP */ + 0x9ca6, /* WildcatPoint */ + 0 +}; + +static const struct pci_driver pch_usb_ehci __pci_driver = { + .ops = &usb_ehci_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .devices = pci_device_ids, +}; -- cgit v1.2.3