src/soc/amd/mendocino/xhci.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 /* TODO: Check if this is still correct */
   4
   5 #include <amdblocks/gpio.h>
   6 #include <amdblocks/smi.h>
   7 #include <amdblocks/xhci.h>
   8 #include <bootstate.h>
   9 #include <device/device.h>
  10 #include <device/pci_ids.h>
  11 #include <drivers/usb/pci_xhci/pci_xhci.h>
  12 #include <soc/pci_devs.h>
  13 #include <soc/smi.h>
  14 #include <static.h>
  15
  16 static const struct sci_source xhci_sci_sources[] = {
  17         {
  18                 .scimap = SMITYPE_XHC0_PME,
  19                 .gpe = XHCI_GEVENT,
  20                 .direction = SMI_SCI_LVL_HIGH,
  21                 .level = SMI_SCI_EDG
  22         },
  23         {
  24                 .scimap = SMITYPE_XHC1_PME,
  25                 .gpe = XHCI_GEVENT,
  26                 .direction = SMI_SCI_LVL_HIGH,
  27                 .level = SMI_SCI_EDG
  28         },
  29         {
  30                 .scimap = SMITYPE_XHC2_PME,
  31                 .gpe = XHCI_GEVENT,
  32                 .direction = SMI_SCI_LVL_HIGH,
  33                 .level = SMI_SCI_EDG
  34         }
  35 };
  36
  37 enum cb_err pci_xhci_get_wake_gpe(const struct device *dev, int *gpe)
  38 {
  39         if (dev->upstream->dev->path.type != DEVICE_PATH_PCI)
  40                 return CB_ERR_ARG;
  41
  42         if (dev->path.type != DEVICE_PATH_PCI)
  43                 return CB_ERR_ARG;
  44
  45         if (dev->upstream->dev->path.pci.devfn == PCIE_ABC_A_DEVFN) {
  46                 if (dev->path.pci.devfn == XHCI0_DEVFN) {
  47                         *gpe = xhci_sci_sources[0].gpe;
  48                         return CB_SUCCESS;
  49                 } else if (dev->path.pci.devfn == XHCI1_DEVFN) {
  50                         *gpe = xhci_sci_sources[1].gpe;
  51                         return CB_SUCCESS;
  52                 }
  53         } else if (dev->upstream->dev->path.pci.devfn == PCIE_ABC_C_DEVFN) {
  54                 if (dev->path.pci.devfn == XHCI2_DEVFN
  55                     && dev->device == PCI_DID_AMD_FAM17H_MODELA0H_XHCI2) {
  56                         *gpe = xhci_sci_sources[2].gpe;
  57                         return CB_SUCCESS;
  58                 }
  59         }
  60
  61         return CB_ERR_ARG;
  62 }
  63
  64 static void configure_xhci_sci(void *unused)
  65 {
  66         const struct device *xhci_2 = DEV_PTR(xhci_2);
  67         if (xhci_2->device == PCI_DID_AMD_FAM17H_MODELA0H_XHCI2)
  68                 gpe_configure_sci(xhci_sci_sources, ARRAY_SIZE(xhci_sci_sources));
  69         else
  70                 gpe_configure_sci(xhci_sci_sources, ARRAY_SIZE(xhci_sci_sources) - 1);
  71 }
  72
  73 BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_ENTRY, configure_xhci_sci, NULL);