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IntelSiliconPkg/Vtd: Add MapHandleInfo in VtdDxe.

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This information is to record which device requested which DMA buffer.
It can be used for DMA buffer analysis.

Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
(cherry picked from commit 6d2d2e6e5b)
This commit is contained in:
Jiewen Yao
2018-03-08 19:42:49 +08:00
committed by Star Zeng
parent b0898ad483
commit 8d8b9af9d8
2 changed files with 144 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

53
IntelSiliconPkg/Feature/VTd/IntelVTdDxe/IntelVTdDxe.c
View File

@@ -113,6 +113,24 @@ IoMmuFreeBuffer (
IN VOID *HostAddress
);
/**
This function fills DeviceHandle/IoMmuAccess to the MAP_HANDLE_INFO,
based upon the DeviceAddress.
@param[in] DeviceHandle The device who initiates the DMA access request.
@param[in] DeviceAddress The base of device memory address to be used as the DMA memory.
@param[in] Length The length of device memory address to be used as the DMA memory.
@param[in] IoMmuAccess The IOMMU access.
**/
VOID
SyncDeviceHandleToMapInfo (
IN EFI_HANDLE DeviceHandle,
IN EFI_PHYSICAL_ADDRESS DeviceAddress,
IN UINT64 Length,
IN UINT64 IoMmuAccess
);
/**
Convert the DeviceHandle to SourceId and Segment.
@@ -236,21 +254,30 @@ VTdSetAttribute (
// Record the entry to driver global variable.
// As such once VTd is activated, the setting can be adopted.
//
return RequestAccessAttribute (Segment, SourceId, DeviceAddress, Length, IoMmuAccess);
Status = RequestAccessAttribute (Segment, SourceId, DeviceAddress, Length, IoMmuAccess);
} else {
PERF_CODE (
AsciiSPrint (PerfToken, sizeof(PerfToken), "S%04xB%02xD%02xF%01x", Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function);
Identifier = (Segment << 16) | SourceId.Uint16;
PERF_START_EX (gImageHandle, PerfToken, "IntelVTD", 0, Identifier);
);
Status = SetAccessAttribute (Segment, SourceId, DeviceAddress, Length, IoMmuAccess);
PERF_CODE (
Identifier = (Segment << 16) | SourceId.Uint16;
PERF_END_EX (gImageHandle, PerfToken, "IntelVTD", 0, Identifier);
);
}
PERF_CODE (
AsciiSPrint (PerfToken, sizeof(PerfToken), "S%04xB%02xD%02xF%01x", Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function);
Identifier = (Segment << 16) | SourceId.Uint16;
PERF_START_EX (gImageHandle, PerfToken, "IntelVTD", 0, Identifier);
);
Status = SetAccessAttribute (Segment, SourceId, DeviceAddress, Length, IoMmuAccess);
PERF_CODE (
Identifier = (Segment << 16) | SourceId.Uint16;
PERF_END_EX (gImageHandle, PerfToken, "IntelVTD", 0, Identifier);
);
if (!EFI_ERROR(Status)) {
SyncDeviceHandleToMapInfo (
DeviceHandle,
DeviceAddress,
Length,
IoMmuAccess
);
}
return Status;
}