\r
#include "IntelVTdPmrPei.h"\r
\r
-#define TOTAL_DMA_BUFFER_SIZE SIZE_4MB\r
-#define TOTAL_DMA_BUFFER_SIZE_S3 SIZE_1MB\r
-\r
EFI_GUID mVTdInfoGuid = {\r
0x222f5e30, 0x5cd, 0x49c6, { 0x8a, 0xc, 0x36, 0xd6, 0x58, 0x41, 0xe0, 0x82 }\r
};\r
@retval EFI_UNSUPPORTED The IOMMU does not support the memory range specified by Mapping.\r
@retval EFI_OUT_OF_RESOURCES There are not enough resources available to modify the IOMMU access.\r
@retval EFI_DEVICE_ERROR The IOMMU device reported an error while attempting the operation.\r
+ @retval EFI_NOT_AVAILABLE_YET DMA protection has been enabled, but DMA buffer are\r
+ not available to be allocated yet.\r
\r
**/\r
EFI_STATUS\r
IN UINT64 IoMmuAccess\r
)\r
{\r
+ VOID *Hob;\r
+ DMA_BUFFER_INFO *DmaBufferInfo;\r
+\r
+ Hob = GetFirstGuidHob (&mDmaBufferInfoGuid);\r
+ DmaBufferInfo = GET_GUID_HOB_DATA(Hob);\r
+\r
+ if (DmaBufferInfo->DmaBufferCurrentTop == 0) {\r
+ return EFI_NOT_AVAILABLE_YET;\r
+ }\r
+\r
return EFI_SUCCESS;\r
}\r
\r
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
@retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r
+ @retval EFI_NOT_AVAILABLE_YET DMA protection has been enabled, but DMA buffer are\r
+ not available to be allocated yet.\r
\r
**/\r
EFI_STATUS\r
Hob = GetFirstGuidHob (&mDmaBufferInfoGuid);\r
DmaBufferInfo = GET_GUID_HOB_DATA(Hob);\r
\r
+ DEBUG ((DEBUG_VERBOSE, "PeiIoMmuMap - HostAddress - 0x%x, NumberOfBytes - %x\n", HostAddress, *NumberOfBytes));\r
+ DEBUG ((DEBUG_VERBOSE, " DmaBufferCurrentTop - %x\n", DmaBufferInfo->DmaBufferCurrentTop));\r
+ DEBUG ((DEBUG_VERBOSE, " DmaBufferCurrentBottom - %x\n", DmaBufferInfo->DmaBufferCurrentBottom));\r
+\r
+ if (DmaBufferInfo->DmaBufferCurrentTop == 0) {\r
+ return EFI_NOT_AVAILABLE_YET;\r
+ }\r
+\r
if (Operation == EdkiiIoMmuOperationBusMasterCommonBuffer ||\r
Operation == EdkiiIoMmuOperationBusMasterCommonBuffer64) {\r
*DeviceAddress = (UINTN)HostAddress;\r
- *Mapping = 0;\r
+ *Mapping = NULL;\r
return EFI_SUCCESS;\r
}\r
\r
- DEBUG ((DEBUG_VERBOSE, "PeiIoMmuMap - HostAddress - 0x%x, NumberOfBytes - %x\n", HostAddress, *NumberOfBytes));\r
- DEBUG ((DEBUG_VERBOSE, " DmaBufferCurrentTop - %x\n", DmaBufferInfo->DmaBufferCurrentTop));\r
- DEBUG ((DEBUG_VERBOSE, " DmaBufferCurrentBottom - %x\n", DmaBufferInfo->DmaBufferCurrentBottom));\r
-\r
Length = *NumberOfBytes + sizeof(MAP_INFO);\r
if (Length > DmaBufferInfo->DmaBufferCurrentTop - DmaBufferInfo->DmaBufferCurrentBottom) {\r
DEBUG ((DEBUG_ERROR, "PeiIoMmuMap - OUT_OF_RESOURCE\n"));\r
@retval EFI_SUCCESS The range was unmapped.\r
@retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by Map().\r
@retval EFI_DEVICE_ERROR The data was not committed to the target system memory.\r
+ @retval EFI_NOT_AVAILABLE_YET DMA protection has been enabled, but DMA buffer are\r
+ not available to be allocated yet.\r
+\r
**/\r
EFI_STATUS\r
EFIAPI\r
Hob = GetFirstGuidHob (&mDmaBufferInfoGuid);\r
DmaBufferInfo = GET_GUID_HOB_DATA(Hob);\r
\r
- if (Mapping == NULL) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
DEBUG ((DEBUG_VERBOSE, "PeiIoMmuUnmap - Mapping - %x\n", Mapping));\r
DEBUG ((DEBUG_VERBOSE, " DmaBufferCurrentTop - %x\n", DmaBufferInfo->DmaBufferCurrentTop));\r
DEBUG ((DEBUG_VERBOSE, " DmaBufferCurrentBottom - %x\n", DmaBufferInfo->DmaBufferCurrentBottom));\r
\r
+ if (DmaBufferInfo->DmaBufferCurrentTop == 0) {\r
+ return EFI_NOT_AVAILABLE_YET;\r
+ }\r
+\r
+ if (Mapping == NULL) {\r
+ return EFI_SUCCESS;\r
+ }\r
+\r
MapInfo = Mapping;\r
ASSERT (MapInfo->Signature == MAP_INFO_SIGNATURE);\r
DEBUG ((DEBUG_VERBOSE, " Op(%x):DeviceAddress - %x, NumberOfBytes - %x\n", MapInfo->Operation, (UINTN)MapInfo->DeviceAddress, MapInfo->NumberOfBytes));\r
MEMORY_WRITE_COMBINE, MEMORY_CACHED and DUAL_ADDRESS_CYCLE.\r
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r
@retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r
+ @retval EFI_NOT_AVAILABLE_YET DMA protection has been enabled, but DMA buffer are\r
+ not available to be allocated yet.\r
\r
**/\r
EFI_STATUS\r
DEBUG ((DEBUG_VERBOSE, " DmaBufferCurrentTop - %x\n", DmaBufferInfo->DmaBufferCurrentTop));\r
DEBUG ((DEBUG_VERBOSE, " DmaBufferCurrentBottom - %x\n", DmaBufferInfo->DmaBufferCurrentBottom));\r
\r
+ if (DmaBufferInfo->DmaBufferCurrentTop == 0) {\r
+ return EFI_NOT_AVAILABLE_YET;\r
+ }\r
+\r
Length = EFI_PAGES_TO_SIZE(Pages);\r
if (Length > DmaBufferInfo->DmaBufferCurrentTop - DmaBufferInfo->DmaBufferCurrentBottom) {\r
DEBUG ((DEBUG_ERROR, "PeiIoMmuAllocateBuffer - OUT_OF_RESOURCE\n"));\r
@retval EFI_SUCCESS The requested memory pages were freed.\r
@retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages\r
was not allocated with AllocateBuffer().\r
+ @retval EFI_NOT_AVAILABLE_YET DMA protection has been enabled, but DMA buffer are\r
+ not available to be allocated yet.\r
\r
**/\r
EFI_STATUS\r
DEBUG ((DEBUG_VERBOSE, " DmaBufferCurrentTop - %x\n", DmaBufferInfo->DmaBufferCurrentTop));\r
DEBUG ((DEBUG_VERBOSE, " DmaBufferCurrentBottom - %x\n", DmaBufferInfo->DmaBufferCurrentBottom));\r
\r
+ if (DmaBufferInfo->DmaBufferCurrentTop == 0) {\r
+ return EFI_NOT_AVAILABLE_YET;\r
+ }\r
+\r
Length = EFI_PAGES_TO_SIZE(Pages);\r
if ((UINTN)HostAddress == DmaBufferInfo->DmaBufferCurrentTop) {\r
DmaBufferInfo->DmaBufferCurrentTop += Length;\r
Initialize DMA protection.\r
\r
@param VTdInfo The VTd engine context information.\r
- @param DmaBufferSize the DMA buffer size\r
- @param DmaBufferBase the DMA buffer base\r
\r
@retval EFI_SUCCESS the DMA protection is initialized.\r
@retval EFI_OUT_OF_RESOURCES no enough resource to initialize DMA protection.\r
**/\r
EFI_STATUS\r
InitDmaProtection (\r
- IN VTD_INFO *VTdInfo,\r
- IN UINTN DmaBufferSize,\r
- OUT UINTN *DmaBufferBase\r
+ IN VTD_INFO *VTdInfo\r
)\r
{\r
EFI_STATUS Status;\r
UINTN LowTop;\r
UINTN HighBottom;\r
UINT64 HighTop;\r
+ DMA_BUFFER_INFO *DmaBufferInfo;\r
+ VOID *Hob;\r
+ EFI_PEI_PPI_DESCRIPTOR *OldDescriptor;\r
+ EDKII_IOMMU_PPI *OldIoMmuPpi;\r
+\r
+ Hob = GetFirstGuidHob (&mDmaBufferInfoGuid);\r
+ DmaBufferInfo = GET_GUID_HOB_DATA(Hob);\r
+\r
+ DEBUG ((DEBUG_INFO, " DmaBufferSize : 0x%x\n", DmaBufferInfo->DmaBufferSize));\r
\r
LowMemoryAlignment = GetLowMemoryAlignment (VTdInfo, VTdInfo->EngineMask);\r
HighMemoryAlignment = GetHighMemoryAlignment (VTdInfo, VTdInfo->EngineMask);\r
} else {\r
MemoryAlignment = LowMemoryAlignment;\r
}\r
- ASSERT (DmaBufferSize == ALIGN_VALUE(DmaBufferSize, MemoryAlignment));\r
- *DmaBufferBase = (UINTN)AllocateAlignedPages (EFI_SIZE_TO_PAGES(DmaBufferSize), MemoryAlignment);\r
- ASSERT (*DmaBufferBase != 0);\r
- if (*DmaBufferBase == 0) {\r
+ ASSERT (DmaBufferInfo->DmaBufferSize == ALIGN_VALUE(DmaBufferInfo->DmaBufferSize, MemoryAlignment));\r
+ DmaBufferInfo->DmaBufferBase = (UINTN)AllocateAlignedPages (EFI_SIZE_TO_PAGES(DmaBufferInfo->DmaBufferSize), MemoryAlignment);\r
+ ASSERT (DmaBufferInfo->DmaBufferBase != 0);\r
+ if (DmaBufferInfo->DmaBufferBase == 0) {\r
DEBUG ((DEBUG_INFO, " InitDmaProtection : OutOfResource\n"));\r
return EFI_OUT_OF_RESOURCES;\r
}\r
\r
+ DEBUG ((DEBUG_INFO, " DmaBufferBase : 0x%x\n", DmaBufferInfo->DmaBufferBase));\r
+\r
+ DmaBufferInfo->DmaBufferCurrentTop = DmaBufferInfo->DmaBufferBase + DmaBufferInfo->DmaBufferSize;\r
+ DmaBufferInfo->DmaBufferCurrentBottom = DmaBufferInfo->DmaBufferBase;\r
+\r
+ //\r
+ // (Re)Install PPI.\r
+ //\r
+ Status = PeiServicesLocatePpi (\r
+ &gEdkiiIoMmuPpiGuid,\r
+ 0,\r
+ &OldDescriptor,\r
+ (VOID **) &OldIoMmuPpi\r
+ );\r
+ if (!EFI_ERROR (Status)) {\r
+ Status = PeiServicesReInstallPpi (OldDescriptor, &mIoMmuPpiList);\r
+ } else {\r
+ Status = PeiServicesInstallPpi (&mIoMmuPpiList);\r
+ }\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
LowBottom = 0;\r
- LowTop = *DmaBufferBase;\r
- HighBottom = *DmaBufferBase + DmaBufferSize;\r
+ LowTop = DmaBufferInfo->DmaBufferBase;\r
+ HighBottom = DmaBufferInfo->DmaBufferBase + DmaBufferInfo->DmaBufferSize;\r
HighTop = LShiftU64 (1, VTdInfo->HostAddressWidth + 1);\r
\r
Status = SetDmaProtectedRange (\r
);\r
\r
if (EFI_ERROR(Status)) {\r
- FreePages ((VOID *)*DmaBufferBase, EFI_SIZE_TO_PAGES(DmaBufferSize));\r
+ FreePages ((VOID *)DmaBufferInfo->DmaBufferBase, EFI_SIZE_TO_PAGES(DmaBufferInfo->DmaBufferSize));\r
}\r
\r
return Status;\r
EFI_STATUS Status;\r
VOID *Hob;\r
VTD_INFO *VTdInfo;\r
- DMA_BUFFER_INFO *DmaBufferInfo;\r
\r
Hob = GetFirstGuidHob (&mVTdInfoGuid);\r
VTdInfo = GET_GUID_HOB_DATA(Hob);\r
//\r
ParseDmarAcpiTableRmrr (VTdInfo);\r
\r
- Hob = GetFirstGuidHob (&mDmaBufferInfoGuid);\r
- DmaBufferInfo = GET_GUID_HOB_DATA(Hob);\r
-\r
- DEBUG ((DEBUG_INFO, " DmaBufferSize : 0x%x\n", DmaBufferInfo->DmaBufferSize));\r
- //\r
- // Find a pre-memory in resource hob as DMA buffer\r
- // Mark PEI memory to be DMA protected.\r
- //\r
- Status = InitDmaProtection (VTdInfo, DmaBufferInfo->DmaBufferSize, &DmaBufferInfo->DmaBufferBase);\r
- if (EFI_ERROR(Status)) {\r
- return Status;\r
- }\r
-\r
- DEBUG ((DEBUG_INFO, " DmaBufferBase : 0x%x\n", DmaBufferInfo->DmaBufferBase));\r
-\r
- DmaBufferInfo->DmaBufferCurrentTop = DmaBufferInfo->DmaBufferBase + DmaBufferInfo->DmaBufferSize;\r
- DmaBufferInfo->DmaBufferCurrentBottom = DmaBufferInfo->DmaBufferBase;\r
-\r
//\r
- // Install PPI.\r
+ // Allocate a range in PEI memory as DMA buffer\r
+ // Mark others to be DMA protected.\r
//\r
- Status = PeiServicesInstallPpi (&mIoMmuPpiList);\r
- ASSERT_EFI_ERROR(Status);\r
+ Status = InitDmaProtection (VTdInfo);\r
\r
return Status;\r
}\r
//\r
InitVTdInfo ();\r
InitVTdPmrForAll ();\r
+\r
+ //\r
+ // Install PPI.\r
+ //\r
+ Status = PeiServicesInstallPpi (&mIoMmuPpiList);\r
+ ASSERT_EFI_ERROR(Status);\r
} else {\r
//\r
// If the memory is initialized,\r
PeiServicesGetBootMode (&BootMode);\r
\r
if (BootMode == BOOT_ON_S3_RESUME) {\r
- DmaBufferInfo->DmaBufferSize = TOTAL_DMA_BUFFER_SIZE_S3;\r
+ DmaBufferInfo->DmaBufferSize = PcdGet32 (PcdVTdPeiDmaBufferSizeS3);\r
} else {\r
- DmaBufferInfo->DmaBufferSize = TOTAL_DMA_BUFFER_SIZE;\r
+ DmaBufferInfo->DmaBufferSize = PcdGet32 (PcdVTdPeiDmaBufferSize);\r
}\r
\r
Status = PeiServicesNotifyPpi (&mVTdInfoNotifyDesc);\r
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