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/* 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
};
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