diff options
| author | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2022-02-23 10:17:21 -0700 |
|---|---|---|
| committer | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2022-03-03 20:46:13 +0000 |
| commit | afaee235fa0b35ac7272c3dab3a74d272bc1bd8c (patch) | |
| tree | c4f4ad1733ccebfb4d84b3bf3642e0c1a3a0a4db /src/drivers/pcie | |
| parent | 114d650fced9ef632aadde90bd7c8e7d1214426a (diff) | |
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>
Diffstat (limited to 'src/drivers/pcie')
| -rw-r--r-- | src/drivers/pcie/generic/Kconfig | 7 | ||||
| -rw-r--r-- | src/drivers/pcie/generic/generic.c | 2 |
2 files changed, 4 insertions, 5 deletions
diff --git a/src/drivers/pcie/generic/Kconfig b/src/drivers/pcie/generic/Kconfig index 2a68708f61..f41f37ddd7 100644 --- a/src/drivers/pcie/generic/Kconfig +++ b/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. diff --git a/src/drivers/pcie/generic/generic.c b/src/drivers/pcie/generic/generic.c index 2daebdae04..c14628f65b 100644 --- a/src/drivers/pcie/generic/generic.c +++ b/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(); |