util/uio_usbdebug/uio_usbdebug_intel.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <arch/io.h>
   4 #include <device/device.h>
   5 #include <device/pci_ehci.h>
   6 #include <console/usb.h>
   7
   8 extern void *ehci_bar;
   9
  10 pci_devfn_t pci_ehci_dbg_dev(unsigned hcd_idx)
  11 {
  12         u32 class;
  13         pci_devfn_t dev;
  14
  15 #if CONFIG_HAVE_USBDEBUG_OPTIONS
  16         if (hcd_idx==2)
  17                 dev = PCI_DEV(0, 0x1a, 0);
  18         else
  19                 dev = PCI_DEV(0, 0x1d, 0);
  20 #else
  21         dev = PCI_DEV(0, 0x1d, 7);
  22 #endif
  23
  24         class = pci_read_config32(dev, PCI_CLASS_REVISION) >> 8;
  25 #if CONFIG_HAVE_USBDEBUG_OPTIONS
  26         if (class != PCI_EHCI_CLASSCODE) {
  27                 /* If we enter here before RCBA programming, EHCI function may
  28                  * appear with the highest function number instead.
  29                  */
  30                 dev |= PCI_DEV(0, 0, 7);
  31                 class = pci_read_config32(dev, PCI_CLASS_REVISION) >> 8;
  32         }
  33 #endif
  34         if (class != PCI_EHCI_CLASSCODE)
  35                 return 0;
  36
  37         return dev;
  38 }
  39
  40 void pci_ehci_dbg_set_port(pci_devfn_t dev, unsigned int port)
  41 {
  42         /* claim USB debug port */
  43         const unsigned long dbgctl_addr =
  44                 ((unsigned long)ehci_bar) + CONFIG_EHCI_DEBUG_OFFSET;
  45         write32(dbgctl_addr, read32(dbgctl_addr) | (1 << 30));
  46 }
  47
  48 void pci_ehci_dbg_enable(pci_devfn_t dev, unsigned long base)
  49 {
  50 }