drivers/{pcie,wifi}/generic: Update untrusted property name

In order to align with established standards for establishing DMA
boundaries[1] from ACPI, the UntrustedDevice property has been renamed
to DmaProperty, which follows Microsoft's implementation. After
discussions with Microsoft, they have agreed to make the `UID` property
optional, so it is left out here, and instead it can be applied to:

1) Internal PCI devices
2) PCIe root ports
3) Downstream PCI(e) devices

[1]: https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports

BUG=b:215424986

Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: Id70e916532e3d3d70305fc61473da28c702fc397
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62435
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>

src/drivers/pcie/generic/Kconfig

@@ -5,7 +5,6 @@ config DRIVERS_PCIE_GENERIC
 	help
 	  This driver allows attaching arbitrary ACPI properties to
 	  arbitrary PCI root ports or devices. Currently it supports one
-	  property, "UntrustedDevice". This property indicates to the
-	  operating system that the PCIe device may be considered
-	  untrusted, and appropriate policies, e.g. IOMMU isolation,
-	  should take place.
+	  property, "DmaProperty", which indicates to the operating system that
+	  the PCIe device may be considered untrusted, and appropriate policies,
+	  e.g. IOMMU isolation, should take place.

src/drivers/pcie/generic/generic.c

@@ -34,7 +34,7 @@ static void pcie_generic_fill_ssdt(const struct device *dev)
 	acpigen_write_ADR_pci_device(dev);
 
 	dsd = acpi_dp_new_table("_DSD");
-	acpi_dp_add_integer(dsd, "UntrustedDevice", 1);
+	acpi_dp_add_integer(dsd, "DmaProperty", 1);
 	acpi_dp_write(dsd);
 
 	acpigen_write_device_end();

src/drivers/wifi/generic/acpi.c

@@ -515,13 +515,13 @@ static void wifi_ssdt_write_properties(const struct device *dev, const char *sco
 		/* Wake capabilities */
 		acpigen_write_PRW(config->wake, ACPI_S3);
 
-		/* Add _DSD for UntrustedDevice property. */
+		/* Add _DSD for DmaProperty property. */
 		if (config->is_untrusted) {
 			struct acpi_dp *dsd, *pkg;
 
 			dsd = acpi_dp_new_table("_DSD");
 			pkg = acpi_dp_new_table(ACPI_DSD_UNTRUSTED_UUID);
-			acpi_dp_add_integer(pkg, "UntrustedDevice", 1);
+			acpi_dp_add_integer(pkg, "DmaProperty", 1);
 			acpi_dp_add_package(dsd, pkg);
 			acpi_dp_write(dsd);
 		}

src/drivers/wifi/generic/chip.h

@@ -10,7 +10,7 @@
 struct drivers_wifi_generic_config {
 	unsigned int wake;
 	/* When set to true, this will add a _DSD which contains a single
-	   property, `UntrustedDevice`, set to 1, to the ACPI Device. */
+	   property, `DmaProperty`, set to 1, under the ACPI Device. */
 	bool is_untrusted;
 };