src/soc/amd/stoneyridge/usb.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <console/console.h>
  16 #include <device/device.h>
  17 #include <device/pci.h>
  18 #include <device/pci_ids.h>
  19 #include <device/pci_ops.h>
  20 #include <device/pci_ehci.h>
  21 #include <soc/acpi.h>
  22 #include <soc/pci_devs.h>
  23 #include <soc/southbridge.h>
  24 #include <amdblocks/acpimmio.h>
  25
  26 static void set_usb_over_current(struct device *dev)
  27 {
  28         uint16_t map = USB_OC_DISABLE_ALL;
  29
  30         if (dev->path.pci.devfn == XHCI_DEVFN) {
  31                 if (mainboard_get_xhci_oc_map(&map) == 0) {
  32                         xhci_pm_write32(XHCI_PM_INDIRECT_INDEX,
  33                                                 XHCI_OVER_CURRENT_CONTROL);
  34                         xhci_pm_write16(XHCI_PM_INDIRECT_DATA, map);
  35                 }
  36         }
  37
  38         if (dev->path.pci.devfn == EHCI1_DEVFN) {
  39                 if (mainboard_get_ehci_oc_map(&map) == 0)
  40                         pci_write_config16(dev, EHCI_OVER_CURRENT_CONTROL, map);
  41         }
  42 }
  43
  44 int __weak mainboard_get_xhci_oc_map(uint16_t *map)
  45 {
  46         printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
  47         return -1;
  48 }
  49
  50 int __weak mainboard_get_ehci_oc_map(uint16_t *map)
  51 {
  52         printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
  53         return -1;
  54 }
  55
  56 static struct pci_operations lops_pci = {
  57         .set_subsystem = pci_dev_set_subsystem,
  58 };
  59
  60 static struct device_operations usb_ops = {
  61         .read_resources = pci_ehci_read_resources,
  62         .set_resources = pci_dev_set_resources,
  63         .enable_resources = pci_dev_enable_resources,
  64         .init = set_usb_over_current,
  65         .scan_bus = scan_static_bus,
  66         .acpi_name = soc_acpi_name,
  67         .ops_pci = &lops_pci,
  68 };
  69
  70 static const unsigned short pci_device_ids[] = {
  71         PCI_DEVICE_ID_AMD_SB900_USB_18_0,
  72         PCI_DEVICE_ID_AMD_SB900_USB_18_2,
  73         PCI_DEVICE_ID_AMD_SB900_USB_20_5,
  74         PCI_DEVICE_ID_AMD_CZ_USB_0,
  75         PCI_DEVICE_ID_AMD_CZ_USB_1,
  76         PCI_DEVICE_ID_AMD_CZ_USB3_0,
  77         0
  78 };
  79
  80 static const struct pci_driver usb_0_driver __pci_driver = {
  81         .ops = &usb_ops,
  82         .vendor = PCI_VENDOR_ID_AMD,
  83         .devices = pci_device_ids,
  84 };