The translation value in ACPI should be the difference between the CPU and PCIe address.
Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>
---
.../Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
index a34018151f..d4c5f47b07 100644
--- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
+++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
@@ -540,6 +540,7 @@ GeneratePciCrs (
UINT32 RefCount;
CM_ARM_PCI_ADDRESS_MAP_INFO *AddrMapInfo;
AML_OBJECT_NODE_HANDLE CrsNode;
+ BOOLEAN IsPosDecode;
ASSERT (Generator != NULL);
ASSERT (CfgMgrProtocol != NULL);
@@ -609,6 +610,11 @@ GeneratePciCrs (
}
Translation = (AddrMapInfo->CpuAddress != AddrMapInfo->PciAddress);
+ if (AddrMapInfo->CpuAddress >= AddrMapInfo->PciAddress) {
+ IsPosDecode = TRUE;
+ } else {
+ IsPosDecode = FALSE;
+ }
switch (AddrMapInfo->SpaceCode) {
case PCI_SS_IO:
@@ -616,12 +622,12 @@ GeneratePciCrs (
FALSE,
TRUE,
TRUE,
- TRUE,
+ IsPosDecode,
3,
0,
AddrMapInfo->PciAddress,
AddrMapInfo->PciAddress + AddrMapInfo->AddressSize - 1,
- Translation ? AddrMapInfo->CpuAddress : 0,
+ Translation ? AddrMapInfo->CpuAddress - AddrMapInfo->PciAddress : 0,
AddrMapInfo->AddressSize,
0,
NULL,
@@ -635,7 +641,7 @@ GeneratePciCrs (
case PCI_SS_M32:
Status = AmlCodeGenRdDWordMemory (
FALSE,
- TRUE,
+ IsPosDecode,
TRUE,
TRUE,
TRUE,
@@ -643,7 +649,7 @@ GeneratePciCrs (
0,
AddrMapInfo->PciAddress,
AddrMapInfo->PciAddress + AddrMapInfo->AddressSize - 1,
- Translation ? AddrMapInfo->CpuAddress : 0,
+ Translation ? AddrMapInfo->CpuAddress - AddrMapInfo->PciAddress : 0,
AddrMapInfo->AddressSize,
0,
NULL,
@@ -657,7 +663,7 @@ GeneratePciCrs (
case PCI_SS_M64:
Status = AmlCodeGenRdQWordMemory (
FALSE,
- TRUE,
+ IsPosDecode,
TRUE,
TRUE,
TRUE,
@@ -665,7 +671,7 @@ GeneratePciCrs (
0,
AddrMapInfo->PciAddress,
AddrMapInfo->PciAddress + AddrMapInfo->AddressSize - 1,
- Translation ? AddrMapInfo->CpuAddress : 0,
+ Translation ? AddrMapInfo->CpuAddress - AddrMapInfo->PciAddress : 0,
AddrMapInfo->AddressSize,
0,
NULL,
--
2.25.1
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#91192): https://edk2.groups.io/g/devel/message/91192
Mute This Topic: https://groups.io/mt/92260870/1787277
Group Owner: devel+owner@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org]
-=-=-=-=-=-=-=-=-=-=-=-Hi Jeff, Thank you for this fix. This patch looks good to me. Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Regards, Sami Mujawar -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#91536): https://edk2.groups.io/g/devel/message/91536 Mute This Topic: https://groups.io/mt/92260870/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=-=-=-=-=-=-=-=-=-=-=-
© 2016 - 2026 Red Hat, Inc.