src/southbridge/intel/bd82x6x/usb_ehci.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2008-2009 coresystems GmbH
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; version 2 of
   9  * the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include <console/console.h>
  22 #include <device/device.h>
  23 #include <device/pci.h>
  24 #include <device/pci_ids.h>
  25 #include "pch.h"
  26 #include <usbdebug.h>
  27 #include <arch/io.h>
  28
  29 static void usb_ehci_init(struct device *dev)
  30 {
  31         u32 reg32;
  32
  33         /* Disable Wake on Disconnect in RMH */
  34         reg32 = RCBA32(0x35b0);
  35         reg32 |= 0x22;
  36         RCBA32(0x35b0) = reg32;
  37
  38         printk(BIOS_DEBUG, "EHCI: Setting up controller.. ");
  39         reg32 = pci_read_config32(dev, PCI_COMMAND);
  40         reg32 |= PCI_COMMAND_MASTER;
  41         //reg32 |= PCI_COMMAND_SERR;
  42         pci_write_config32(dev, PCI_COMMAND, reg32);
  43
  44         printk(BIOS_DEBUG, "done.\n");
  45 }
  46
  47 static void usb_ehci_set_subsystem(device_t dev, unsigned vendor, unsigned device)
  48 {
  49         u8 access_cntl;
  50
  51         access_cntl = pci_read_config8(dev, 0x80);
  52
  53         /* Enable writes to protected registers. */
  54         pci_write_config8(dev, 0x80, access_cntl | 1);
  55
  56         if (!vendor || !device) {
  57                 pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
  58                                 pci_read_config32(dev, PCI_VENDOR_ID));
  59         } else {
  60                 pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
  61                                 ((device & 0xffff) << 16) | (vendor & 0xffff));
  62         }
  63
  64         /* Restore protection. */
  65         pci_write_config8(dev, 0x80, access_cntl);
  66 }
  67
  68 static void usb_ehci_set_resources(struct device *dev)
  69 {
  70 #if CONFIG_USBDEBUG
  71         struct resource *res;
  72         u32 base;
  73         u32 usb_debug;
  74
  75         usb_debug = get_ehci_debug();
  76         set_ehci_debug(0);
  77 #endif
  78         pci_dev_set_resources(dev);
  79
  80 #if CONFIG_USBDEBUG
  81         res = find_resource(dev, 0x10);
  82         set_ehci_debug(usb_debug);
  83         if (!res) return;
  84         base = res->base;
  85         set_ehci_base(base);
  86         report_resource_stored(dev, res, "");
  87 #endif
  88 }
  89
  90
  91
  92 static struct pci_operations lops_pci = {
  93         .set_subsystem  = &usb_ehci_set_subsystem,
  94 };
  95
  96 static struct device_operations usb_ehci_ops = {
  97         .read_resources         = pci_dev_read_resources,
  98         .set_resources          = usb_ehci_set_resources,
  99         .enable_resources       = pci_dev_enable_resources,
 100         .init                   = usb_ehci_init,
 101         .scan_bus               = 0,
 102         .ops_pci                = &lops_pci,
 103 };
 104
 105 static const struct pci_driver pch_usb_ehci1 __pci_driver = {
 106         .ops    = &usb_ehci_ops,
 107         .vendor = PCI_VENDOR_ID_INTEL,
 108         .device = 0x1c26,
 109 };
 110 static const struct pci_driver pch_usb_ehci2 __pci_driver = {
 111         .ops    = &usb_ehci_ops,
 112         .vendor = PCI_VENDOR_ID_INTEL,
 113         .device = 0x1c2d,
 114 };
 115 static const struct pci_driver pch_usb_ehci3 __pci_driver = {
 116         .ops    = &usb_ehci_ops,
 117         .vendor = PCI_VENDOR_ID_INTEL,
 118         .device = 0x1e26,
 119 };
 120 static const struct pci_driver pch_usb_ehci4 __pci_driver = {
 121         .ops    = &usb_ehci_ops,
 122         .vendor = PCI_VENDOR_ID_INTEL,
 123         .device = 0x1e2d,
 124 };