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-rw-r--r--OvmfPkg/Library/PlatformBdsLib/BdsPlatform.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/OvmfPkg/Library/PlatformBdsLib/BdsPlatform.c b/OvmfPkg/Library/PlatformBdsLib/BdsPlatform.c
index 1eb2a8b91e..fdae6b1cdc 100644
--- a/OvmfPkg/Library/PlatformBdsLib/BdsPlatform.c
+++ b/OvmfPkg/Library/PlatformBdsLib/BdsPlatform.c
@@ -749,6 +749,7 @@ SetPciIntLine (
)
{
EFI_DEVICE_PATH_PROTOCOL *DevPathNode;
+ EFI_DEVICE_PATH_PROTOCOL *DevPath;
UINTN RootSlot;
UINTN Idx;
UINT8 IrqLine;
@@ -760,6 +761,7 @@ SetPciIntLine (
DevPathNode = DevicePathFromHandle (Handle);
ASSERT (DevPathNode != NULL);
+ DevPath = DevPathNode;
//
// Compute index into PciHostIrqs[] table by walking
@@ -832,6 +834,29 @@ SetPciIntLine (
Idx %= ARRAY_SIZE (PciHostIrqs);
IrqLine = PciHostIrqs[Idx];
+ DEBUG_CODE_BEGIN ();
+ {
+ CHAR16 *DevPathString;
+ STATIC CHAR16 Fallback[] = L"<failed to convert>";
+ UINTN Segment, Bus, Device, Function;
+
+ DevPathString = ConvertDevicePathToText (DevPath, FALSE, FALSE);
+ if (DevPathString == NULL) {
+ DevPathString = Fallback;
+ }
+ Status = PciIo->GetLocation (PciIo, &Segment, &Bus, &Device, &Function);
+ ASSERT_EFI_ERROR (Status);
+
+ DEBUG ((EFI_D_VERBOSE, "%a: [%02x:%02x.%x] %s -> 0x%02x\n", __FUNCTION__,
+ (UINT32)Bus, (UINT32)Device, (UINT32)Function, DevPathString,
+ IrqLine));
+
+ if (DevPathString != Fallback) {
+ FreePool (DevPathString);
+ }
+ }
+ DEBUG_CODE_END ();
+
//
// Set PCI Interrupt Line register for this device to PciHostIrqs[Idx]
//