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  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc.
  18  */
  19
  20 #include <arch/io.h>
  21 #include <device/device.h>
  22 #include <device/pci_ehci.h>
  23 #include <console/usb.h>
  24
  25 extern void *ehci_bar;
  26
  27 pci_devfn_t pci_ehci_dbg_dev(unsigned hcd_idx)
  28 {
  29         u32 class;
  30         pci_devfn_t dev;
  31
  32 #if CONFIG_HAVE_USBDEBUG_OPTIONS
  33         if (hcd_idx==2)
  34                 dev = PCI_DEV(0, 0x1a, 0);
  35         else
  36                 dev = PCI_DEV(0, 0x1d, 0);
  37 #else
  38         dev = PCI_DEV(0, 0x1d, 7);
  39 #endif
  40
  41         class = pci_read_config32(dev, PCI_CLASS_REVISION) >> 8;
  42 #if CONFIG_HAVE_USBDEBUG_OPTIONS
  43         if (class != PCI_EHCI_CLASSCODE) {
  44                 /* If we enter here before RCBA programming, EHCI function may
  45                  * appear with the highest function number instead.
  46                  */
  47                 dev |= PCI_DEV(0, 0, 7);
  48                 class = pci_read_config32(dev, PCI_CLASS_REVISION) >> 8;
  49         }
  50 #endif
  51         if (class != PCI_EHCI_CLASSCODE)
  52                 return 0;
  53
  54         return dev;
  55 }
  56
  57 void pci_ehci_dbg_set_port(pci_devfn_t dev, unsigned int port)
  58 {
  59         /* claim usb debug port */
  60         const unsigned long dbgctl_addr =
  61                 ((unsigned long)ehci_bar) + CONFIG_EHCI_DEBUG_OFFSET;
  62         write32(dbgctl_addr, read32(dbgctl_addr) | (1 << 30));
  63 }
  64
  65 void pci_ehci_dbg_enable(pci_devfn_t dev, unsigned long base)
  66 {
  67 }