xhci.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
/* TODO: Check if this is still correct */
 
#include <amdblocks/gpio.h>
#include <amdblocks/smi.h>
#include <bootstate.h>
#include <device/device.h>
#include <device/pci_ids.h>
#include <drivers/usb/pci_xhci/pci_xhci.h>
#include <soc/pci_devs.h>
#include <soc/smi.h>
 
static const struct sci_source xhci_sci_sources[] = {
        {
                .scimap = SMITYPE_XHC0_PME,
                .gpe = GEVENT_31,
                .direction = SMI_SCI_LVL_HIGH,
                .level = SMI_SCI_EDG
        },
        {
                .scimap = SMITYPE_XHC1_PME,
                .gpe = GEVENT_31,
                .direction = SMI_SCI_LVL_HIGH,
                .level = SMI_SCI_EDG
        },
        {
                .scimap = SMITYPE_XHC2_PME,
                .gpe = GEVENT_31,
                .direction = SMI_SCI_LVL_HIGH,
                .level = SMI_SCI_EDG
        }
};
 
enum cb_err pci_xhci_get_wake_gpe(const struct device *dev, int *gpe)
{
        if (dev->bus->dev->path.type != DEVICE_PATH_PCI)
                return CB_ERR_ARG;
 
        if (dev->path.type != DEVICE_PATH_PCI)
                return CB_ERR_ARG;
 
        if (dev->bus->dev->path.pci.devfn == PCIE_ABC_A_DEVFN) {
                if (dev->path.pci.devfn == XHCI0_DEVFN) {
                        *gpe = xhci_sci_sources[0].gpe;
                        return CB_SUCCESS;
                } else if (dev->path.pci.devfn == XHCI1_DEVFN) {
                        *gpe = xhci_sci_sources[1].gpe;
                        return CB_SUCCESS;
                }
        } else if (dev->bus->dev->path.pci.devfn == PCIE_GPP_C_DEVFN) {
                if (dev->path.pci.devfn == XHCI2_DEVFN
                    && dev->device == PCI_DID_AMD_FAM17H_MODELA0H_XHCI2) {
                        *gpe = xhci_sci_sources[2].gpe;
                        return CB_SUCCESS;
                }
        }
 
        return CB_ERR_ARG;
}
 
static void configure_xhci_sci(void *unused)
{
        const struct device *xhci_2 = DEV_PTR(xhci_2);
        if (xhci_2->device == PCI_DID_AMD_FAM17H_MODELA0H_XHCI2)
                gpe_configure_sci(xhci_sci_sources, ARRAY_SIZE(xhci_sci_sources));
        else
                gpe_configure_sci(xhci_sci_sources, ARRAY_SIZE(xhci_sci_sources) - 1);
}
 
BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_ENTRY, configure_xhci_sci, NULL);