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IntelSiliconPkg/Vtd: Support CSM usage. 

Remove zero address check in IoMmuMap.
The reason is that a CSM legacy driver may use legacy memory for DMA.
As such, the legacyBios need allow below 1M to the legacy device.

This patch also fixed some typo.

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>
This commit is contained in:
Jiewen Yao 2017-09-04 16:43:35 +08:00
parent 7d8e8474f9
commit 94fb621d37
2 changed files with 5 additions and 5 deletions
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8
IntelSiliconPkg/IntelVTdDxe/BmDma.c
View File

@ -77,14 +77,14 @@ IoMmuMap (
EFI_PHYSICAL_ADDRESS DmaMemoryTop;
BOOLEAN NeedRemap;
DEBUG ((DEBUG_VERBOSE, "IoMmuMap: ==> 0x%08x - 0x%08x (%x)\n", HostAddress, NumberOfBytes, Operation));
if (HostAddress == NULL || NumberOfBytes == NULL || DeviceAddress == NULL ||
if (NumberOfBytes == NULL || DeviceAddress == NULL ||
Mapping == NULL) {
DEBUG ((DEBUG_ERROR, "IoMmuMap: %r\n", EFI_INVALID_PARAMETER));
return EFI_INVALID_PARAMETER;
}
DEBUG ((DEBUG_VERBOSE, "IoMmuMap: ==> 0x%08x - 0x%08x (%x)\n", HostAddress, *NumberOfBytes, Operation));
//
// Make sure that Operation is valid
//
@ -135,7 +135,7 @@ IoMmuMap (
if (NeedRemap) {
//
// Common Buffer operations can not be remapped. If the common buffer
// if above 4GB, then it is not possible to generate a mapping, so return
// is above 4GB, then it is not possible to generate a mapping, so return
// an error.
//
DEBUG ((DEBUG_ERROR, "IoMmuMap: %r\n", EFI_UNSUPPORTED));

2
IntelSiliconPkg/IntelVTdDxe/TranslationTable.c
View File

@ -891,7 +891,7 @@ SetAccessAttribute (
SecondLevelPagingEntry = NULL;
DEBUG ((DEBUG_INFO,"SetAccessAttribute (S%04x B%02x D%02x F%02x) (0x%016lx - 0x%08x, %x)\n", Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function, BaseAddress, (UINTN)Length, IoMmuAccess));
DEBUG ((DEBUG_VERBOSE,"SetAccessAttribute (S%04x B%02x D%02x F%02x) (0x%016lx - 0x%08x, %x)\n", Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function, BaseAddress, (UINTN)Length, IoMmuAccess));
VtdIndex = FindVtdIndexByPciDevice (Segment, SourceId, &ExtContextEntry, &ContextEntry);
if (VtdIndex == (UINTN)-1) {