| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2008-2009 coresystems GmbH |
| * |
| * 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_ehci_clock_gating(struct device *dev) |
| { |
| u32 reg32; |
| |
| /* IOBP 0xE5004001[7:6] = 11b */ |
| pch_iobp_update(0xe5004001, ~0, (1 << 7)|(1 << 6)); |
| |
| /* Dx:F0:DCh[5,2,1] = 111b |
| * Dx:F0:DCh[0] = 1b when EHCI controller is disabled */ |
| reg32 = pci_read_config32(dev, 0xdc); |
| reg32 |= (1 << 5) | (1 << 2) | (1 << 1); |
| pci_write_config32(dev, 0xdc, reg32); |
| |
| /* Dx:F0:78h[1:0] = 11b */ |
| reg32 = pci_read_config32(dev, 0x78); |
| reg32 |= (1 << 1) | (1 << 0); |
| pci_write_config32(dev, 0x78, reg32); |
| } |
| |
| static void usb_ehci_init(struct device *dev) |
| { |
| printk(BIOS_DEBUG, "EHCI: Setting up controller.. "); |
| |
| usb_ehci_clock_gating(dev); |
| |
| /* Disable Wake on Disconnect in RMH */ |
| RCBA32_OR(0x35b0, 0x00000022); |
| |
| printk(BIOS_DEBUG, "done.\n"); |
| } |
| |
| 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 struct pci_operations lops_pci = { |
| .set_subsystem = &usb_ehci_set_subsystem, |
| }; |
| |
| static struct device_operations usb_ehci_ops = { |
| .read_resources = pci_ehci_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .init = usb_ehci_init, |
| .scan_bus = 0, |
| .ops_pci = &lops_pci, |
| }; |
| |
| static const unsigned short pci_device_ids[] = { 0x9c26, 0x8c26, 0x8c2d, 0 }; |
| |
| static const struct pci_driver pch_usb_ehci __pci_driver = { |
| .ops = &usb_ehci_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .devices = pci_device_ids, |
| }; |