Change in coreboot[master]: drivers/{pcie,wifi}/generic: Update untrusted property name

[Tim Wawrzynczak (Code Review)]

Tim Wawrzynczak has submitted this change. ( https://review.coreboot.org/c/coreboot/+/62435 )

Change subject: drivers/{pcie,wifi}/generic: Update untrusted property name
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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-r...

BUG=b:215424986

Signed-off-by: Tim Wawrzynczak 
Change-Id: Id70e916532e3d3d70305fc61473da28c702fc397
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62435
Tested-by: build bot (Jenkins) 
Reviewed-by: EricR Lai 
---
M src/drivers/pcie/generic/Kconfig
M src/drivers/pcie/generic/generic.c
M src/drivers/wifi/generic/acpi.c
M src/drivers/wifi/generic/chip.h
4 files changed, 7 insertions(+), 8 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  EricR Lai: Looks good to me, approved

diff --git a/src/drivers/pcie/generic/Kconfig b/src/drivers/pcie/generic/Kconfig
index 2a68708..f41f37d 100644
--- a/src/drivers/pcie/generic/Kconfig
+++ b/src/drivers/pcie/generic/Kconfig
@@ -5,7 +5,6 @@
    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.
diff --git a/src/drivers/pcie/generic/generic.c b/src/drivers/pcie/generic/generic.c
index 2daebda..c14628f 100644
--- a/src/drivers/pcie/generic/generic.c
+++ b/src/drivers/pcie/generic/generic.c
@@ -34,7 +34,7 @@
    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();
diff --git a/src/drivers/wifi/generic/acpi.c b/src/drivers/wifi/generic/acpi.c
index 7c606f9..16c1839 100644
--- a/src/drivers/wifi/generic/acpi.c
+++ b/src/drivers/wifi/generic/acpi.c
@@ -515,13 +515,13 @@
    	/* 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);
    	}
diff --git a/src/drivers/wifi/generic/chip.h b/src/drivers/wifi/generic/chip.h
index 35726f2..907b260 100644
--- a/src/drivers/wifi/generic/chip.h
+++ b/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;
 };