| /* |
| * 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 <console/console.h> |
| #include <delay.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <arch/io.h> |
| #include <soc/ehci.h> |
| #include <soc/pch.h> |
| |
| 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, |
| }; |