Enable PCI dual-address cycle attribute to signal device supports 64-bit DMA addresses.
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2567 Reviewed-by: Nikita Leshenko <nikita.leshche...@oracle.com> Signed-off-by: Liran Alon <liran.a...@oracle.com> --- OvmfPkg/PvScsiDxe/PvScsi.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/OvmfPkg/PvScsiDxe/PvScsi.c b/OvmfPkg/PvScsiDxe/PvScsi.c index 33167c177b42..e673ed8ba6a0 100644 --- a/OvmfPkg/PvScsiDxe/PvScsi.c +++ b/OvmfPkg/PvScsiDxe/PvScsi.c @@ -814,6 +814,27 @@ PvScsiSetPCIAttributes ( return Status; } + // + // Signal device supports 64-bit DMA addresses + // + Status = Dev->PciIo->Attributes ( + Dev->PciIo, + EfiPciIoAttributeOperationEnable, + EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE, + NULL + ); + if (EFI_ERROR (Status)) { + // + // Warn user device will only be using 32-bit DMA addresses. + // + // Note that this does not prevent device/driver from working + // and therefore we only warn and continue as usual. + // + DEBUG ((DEBUG_WARN, + "%a: failed to enable 64-bit DMA addresses\n", + __FUNCTION__)); + } + return EFI_SUCCESS; } -- 2.20.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#55872): https://edk2.groups.io/g/devel/message/55872 Mute This Topic: https://groups.io/mt/72001274/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
