| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpi.h> |
| #include <acpi/acpigen.h> |
| #include <acpi/acpigen_pci.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include "chip.h" |
| |
| static const char *pcie_generic_acpi_name(const struct device *dev) |
| { |
| struct drivers_pcie_generic_config *config = dev->chip_info; |
| |
| if (config->companion_dev) |
| return acpi_device_name(config->companion_dev); |
| return "DEV0"; |
| } |
| |
| static void pcie_generic_fill_ssdt(const struct device *dev) |
| { |
| struct drivers_pcie_generic_config *config; |
| struct acpi_dp *dsd; |
| |
| if (!is_dev_enabled(dev)) |
| return; |
| |
| pci_rom_ssdt(dev); |
| |
| config = dev->chip_info; |
| if (!config || !config->is_untrusted || !dev->bus || !dev->bus->dev) |
| return; |
| |
| const char *scope; |
| const char *name; |
| |
| /* Code will be generated under companion device instead if present. */ |
| if (config->companion_dev) |
| scope = acpi_device_path(config->companion_dev); |
| else |
| scope = acpi_device_path(dev->bus->dev); |
| name = acpi_device_name(dev); |
| acpigen_write_scope(scope); |
| if (!config->companion_dev) { |
| acpigen_write_device(name); |
| acpigen_write_ADR_pci_device(dev); |
| } |
| dsd = acpi_dp_new_table("_DSD"); |
| acpi_dp_add_integer(dsd, "DmaProperty", 1); |
| acpi_dp_write(dsd); |
| if (!config->companion_dev) |
| acpigen_write_device_end(); |
| acpigen_write_scope_end(); |
| |
| printk(BIOS_INFO, "%s.%s: Enable ACPI properties for %s (%s)\n", scope, name, |
| dev_path(dev), dev->chip_ops->name); |
| } |
| |
| struct device_operations pcie_generic_ops = { |
| .read_resources = pci_dev_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .init = pci_dev_init, |
| .ops_pci = &pci_dev_ops_pci, |
| .acpi_name = pcie_generic_acpi_name, |
| .acpi_fill_ssdt = pcie_generic_fill_ssdt, |
| }; |
| |
| static void pcie_generic_enable(struct device *dev) |
| { |
| dev->ops = &pcie_generic_ops; |
| } |
| |
| struct chip_operations drivers_pcie_generic_ops = { |
| CHIP_NAME("PCIe Device") |
| .enable_dev = pcie_generic_enable |
| }; |