util/uio_usbdebug/uio_usbdebug_intel.c

   1 /*
   2  * This file is part of uio_usbdebug
   3  *
   4  * Copyright (C) 2013 Nico Huber <nico.h@gmx.de>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <arch/io.h>
  17 #include <device/device.h>
  18 #include <device/pci_ehci.h>
  19 #include <console/usb.h>
  20
  21 extern void *ehci_bar;
  22
  23 pci_devfn_t pci_ehci_dbg_dev(unsigned hcd_idx)
  24 {
  25         u32 class;
  26         pci_devfn_t dev;
  27
  28 #if CONFIG_HAVE_USBDEBUG_OPTIONS
  29         if (hcd_idx==2)
  30                 dev = PCI_DEV(0, 0x1a, 0);
  31         else
  32                 dev = PCI_DEV(0, 0x1d, 0);
  33 #else
  34         dev = PCI_DEV(0, 0x1d, 7);
  35 #endif
  36
  37         class = pci_read_config32(dev, PCI_CLASS_REVISION) >> 8;
  38 #if CONFIG_HAVE_USBDEBUG_OPTIONS
  39         if (class != PCI_EHCI_CLASSCODE) {
  40                 /* If we enter here before RCBA programming, EHCI function may
  41                  * appear with the highest function number instead.
  42                  */
  43                 dev |= PCI_DEV(0, 0, 7);
  44                 class = pci_read_config32(dev, PCI_CLASS_REVISION) >> 8;
  45         }
  46 #endif
  47         if (class != PCI_EHCI_CLASSCODE)
  48                 return 0;
  49
  50         return dev;
  51 }
  52
  53 void pci_ehci_dbg_set_port(pci_devfn_t dev, unsigned int port)
  54 {
  55         /* claim usb debug port */
  56         const unsigned long dbgctl_addr =
  57                 ((unsigned long)ehci_bar) + CONFIG_EHCI_DEBUG_OFFSET;
  58         write32(dbgctl_addr, read32(dbgctl_addr) | (1 << 30));
  59 }
  60
  61 void pci_ehci_dbg_enable(pci_devfn_t dev, unsigned long base)
  62 {
  63 }