1 files changed, 60 insertions, 0 deletions
diff --git a/src/soc/amd/picasso/pcie_gpp.c b/src/soc/amd/picasso/pcie_gpp.c
new file mode 100644
index 0000000000..73de80365d
--- /dev/null
+++ b/src/soc/amd/picasso/pcie_gpp.c
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <acpi/acpigen.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <soc/pci_devs.h>
+#include <stdio.h>
+
+static const char *pcie_gpp_acpi_name(const struct device *dev)
+{
+	if (dev->path.type != DEVICE_PATH_PCI)
+		return NULL;
+
+	switch (dev->path.pci.devfn) {
+	case PCIE_GPP_0_DEVFN:
+		return "PBR0";
+	case PCIE_GPP_1_DEVFN:
+		return "PBR1";
+	case PCIE_GPP_2_DEVFN:
+		return "PBR2";
+	case PCIE_GPP_3_DEVFN:
+		return "PBR3";
+	case PCIE_GPP_4_DEVFN:
+		return "PBR4";
+	case PCIE_GPP_5_DEVFN:
+		return "PBR5";
+	case PCIE_GPP_6_DEVFN:
+		return "PBR6";
+	case PCIE_GPP_A_DEVFN:
+		return "PBRA";
+	case PCIE_GPP_B_DEVFN:
+		return "PBRB";
+	}
+
+	return NULL;
+}
+
+static struct device_operations pcie_gpp_ops = {
+	.read_resources		= pci_bus_read_resources,
+	.set_resources		= pci_dev_set_resources,
+	.enable_resources	= pci_bus_enable_resources,
+	.scan_bus		= pci_scan_bridge,
+	.reset_bus		= pci_bus_reset,
+	.acpi_name		= pcie_gpp_acpi_name,
+	.acpi_fill_ssdt		= acpi_device_write_pci_dev,
+};
+
+static const unsigned short pci_device_ids[] = {
+	PCI_DEVICE_ID_AMD_FAM17H_PCIE_GPP,
+	PCI_DEVICE_ID_AMD_FAM17H_PCIE_GPP_BUSA,
+	PCI_DEVICE_ID_AMD_FAM17H_PCIE_GPP_BUSB,
+	0
+};
+
+static const struct pci_driver pcie_gpp_driver __pci_driver = {
+	.ops			= &pcie_gpp_ops,
+	.vendor			= PCI_VENDOR_ID_AMD,
+	.devices		= pci_device_ids,
+};