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IntelSiliconPkg IntelVTdDxe: Support early SetAttributes()

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Support early SetAttributes() before DMAR table is installed.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
(cherry picked from commit 0bc94c748b)
This commit is contained in:
Star Zeng
2018-01-03 15:08:18 +08:00
parent 48008d5f59
commit af1b85332b
4 changed files with 202 additions and 3 deletions
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10
IntelSiliconPkg/Feature/VTd/IntelVTdDxe/IntelVTdDxe.c
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@@ -1,7 +1,7 @@
/** @file
Intel VTd driver.
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -231,6 +231,14 @@ VTdSetAttribute (
DEBUG ((DEBUG_VERBOSE, "PCI(S%x.B%x.D%x.F%x) ", Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));
DEBUG ((DEBUG_VERBOSE, "(0x%lx~0x%lx) - %lx\n", DeviceAddress, Length, IoMmuAccess));
if (mAcpiDmarTable == NULL) {
//
// 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);
}
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;