/** @file\r
BmDma related function\r
\r
- Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
\r
**/\r
\r
-#include <PiDxe.h>\r
-\r
-#include <Protocol/IoMmu.h>\r
-\r
-#include <Library/BaseLib.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/BaseMemoryLib.h>\r
-#include <Library/MemoryAllocationLib.h>\r
-#include <Library/UefiBootServicesTableLib.h>\r
+#include "DmaProtection.h"\r
\r
// TBD: May make it a policy\r
#define DMA_MEMORY_TOP MAX_UINTN\r
//#define DMA_MEMORY_TOP 0x0000000001FFFFFFULL\r
\r
+#define MAP_HANDLE_INFO_SIGNATURE SIGNATURE_32 ('H', 'M', 'A', 'P')\r
+typedef struct {\r
+ UINT32 Signature;\r
+ LIST_ENTRY Link;\r
+ EFI_HANDLE DeviceHandle;\r
+ UINT64 IoMmuAccess;\r
+} MAP_HANDLE_INFO;\r
+#define MAP_HANDLE_INFO_FROM_LINK(a) CR (a, MAP_HANDLE_INFO, Link, MAP_HANDLE_INFO_SIGNATURE)\r
+\r
#define MAP_INFO_SIGNATURE SIGNATURE_32 ('D', 'M', 'A', 'P')\r
typedef struct {\r
UINT32 Signature;\r
UINTN NumberOfPages;\r
EFI_PHYSICAL_ADDRESS HostAddress;\r
EFI_PHYSICAL_ADDRESS DeviceAddress;\r
+ LIST_ENTRY HandleList;\r
} MAP_INFO;\r
#define MAP_INFO_FROM_LINK(a) CR (a, MAP_INFO, Link, MAP_INFO_SIGNATURE)\r
\r
LIST_ENTRY gMaps = INITIALIZE_LIST_HEAD_VARIABLE(gMaps);\r
\r
+/**\r
+ This function fills DeviceHandle/IoMmuAccess to the MAP_HANDLE_INFO,\r
+ based upon the DeviceAddress.\r
+\r
+ @param[in] DeviceHandle The device who initiates the DMA access request.\r
+ @param[in] DeviceAddress The base of device memory address to be used as the DMA memory.\r
+ @param[in] Length The length of device memory address to be used as the DMA memory.\r
+ @param[in] IoMmuAccess The IOMMU access.\r
+\r
+**/\r
+VOID\r
+SyncDeviceHandleToMapInfo (\r
+ IN EFI_HANDLE DeviceHandle,\r
+ IN EFI_PHYSICAL_ADDRESS DeviceAddress,\r
+ IN UINT64 Length,\r
+ IN UINT64 IoMmuAccess\r
+ )\r
+{\r
+ MAP_INFO *MapInfo;\r
+ MAP_HANDLE_INFO *MapHandleInfo;\r
+ LIST_ENTRY *Link;\r
+ EFI_TPL OriginalTpl;\r
+\r
+ //\r
+ // Find MapInfo according to DeviceAddress\r
+ //\r
+ OriginalTpl = gBS->RaiseTPL (VTD_TPL_LEVEL);\r
+ MapInfo = NULL;\r
+ for (Link = GetFirstNode (&gMaps)\r
+ ; !IsNull (&gMaps, Link)\r
+ ; Link = GetNextNode (&gMaps, Link)\r
+ ) {\r
+ MapInfo = MAP_INFO_FROM_LINK (Link);\r
+ if (MapInfo->DeviceAddress == DeviceAddress) {\r
+ break;\r
+ }\r
+ }\r
+ if ((MapInfo == NULL) || (MapInfo->DeviceAddress != DeviceAddress)) {\r
+ DEBUG ((DEBUG_ERROR, "SyncDeviceHandleToMapInfo: DeviceAddress(0x%lx) - not found\n", DeviceAddress));\r
+ gBS->RestoreTPL (OriginalTpl);\r
+ return ;\r
+ }\r
+\r
+ //\r
+ // Find MapHandleInfo according to DeviceHandle\r
+ //\r
+ MapHandleInfo = NULL;\r
+ for (Link = GetFirstNode (&MapInfo->HandleList)\r
+ ; !IsNull (&MapInfo->HandleList, Link)\r
+ ; Link = GetNextNode (&MapInfo->HandleList, Link)\r
+ ) {\r
+ MapHandleInfo = MAP_HANDLE_INFO_FROM_LINK (Link);\r
+ if (MapHandleInfo->DeviceHandle == DeviceHandle) {\r
+ break;\r
+ }\r
+ }\r
+ if ((MapHandleInfo != NULL) && (MapHandleInfo->DeviceHandle == DeviceHandle)) {\r
+ MapHandleInfo->IoMmuAccess = IoMmuAccess;\r
+ gBS->RestoreTPL (OriginalTpl);\r
+ return ;\r
+ }\r
+\r
+ //\r
+ // No DeviceHandle\r
+ // Initialize and insert the MAP_HANDLE_INFO structure\r
+ //\r
+ MapHandleInfo = AllocatePool (sizeof (MAP_HANDLE_INFO));\r
+ if (MapHandleInfo == NULL) {\r
+ DEBUG ((DEBUG_ERROR, "SyncDeviceHandleToMapInfo: %r\n", EFI_OUT_OF_RESOURCES));\r
+ gBS->RestoreTPL (OriginalTpl);\r
+ return ;\r
+ }\r
+\r
+ MapHandleInfo->Signature = MAP_HANDLE_INFO_SIGNATURE;\r
+ MapHandleInfo->DeviceHandle = DeviceHandle;\r
+ MapHandleInfo->IoMmuAccess = IoMmuAccess;\r
+\r
+ InsertTailList (&MapInfo->HandleList, &MapHandleInfo->Link);\r
+ gBS->RestoreTPL (OriginalTpl);\r
+\r
+ return ;\r
+}\r
+\r
/**\r
Provides the controller-specific addresses required to access system memory from a\r
DMA bus master.\r
MAP_INFO *MapInfo;\r
EFI_PHYSICAL_ADDRESS DmaMemoryTop;\r
BOOLEAN NeedRemap;\r
+ EFI_TPL OriginalTpl;\r
\r
if (NumberOfBytes == NULL || DeviceAddress == NULL ||\r
Mapping == NULL) {\r
MapInfo->NumberOfPages = EFI_SIZE_TO_PAGES (MapInfo->NumberOfBytes);\r
MapInfo->HostAddress = PhysicalAddress;\r
MapInfo->DeviceAddress = DmaMemoryTop;\r
+ InitializeListHead(&MapInfo->HandleList);\r
\r
//\r
// Allocate a buffer below 4GB to map the transfer to.\r
MapInfo->DeviceAddress = MapInfo->HostAddress;\r
}\r
\r
+ OriginalTpl = gBS->RaiseTPL (VTD_TPL_LEVEL);\r
InsertTailList (&gMaps, &MapInfo->Link);\r
+ gBS->RestoreTPL (OriginalTpl);\r
\r
//\r
// The DeviceAddress is the address of the maped buffer below 4GB\r
)\r
{\r
MAP_INFO *MapInfo;\r
+ MAP_HANDLE_INFO *MapHandleInfo;\r
LIST_ENTRY *Link;\r
+ EFI_TPL OriginalTpl;\r
\r
DEBUG ((DEBUG_VERBOSE, "IoMmuUnmap: 0x%08x\n", Mapping));\r
\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
+ OriginalTpl = gBS->RaiseTPL (VTD_TPL_LEVEL);\r
MapInfo = NULL;\r
for (Link = GetFirstNode (&gMaps)\r
; !IsNull (&gMaps, Link)\r
// Mapping is not a valid value returned by Map()\r
//\r
if (MapInfo != Mapping) {\r
+ gBS->RestoreTPL (OriginalTpl);\r
DEBUG ((DEBUG_ERROR, "IoMmuUnmap: %r\n", EFI_INVALID_PARAMETER));\r
return EFI_INVALID_PARAMETER;\r
}\r
RemoveEntryList (&MapInfo->Link);\r
+ gBS->RestoreTPL (OriginalTpl);\r
+\r
+ //\r
+ // remove all nodes in MapInfo->HandleList\r
+ //\r
+ while (!IsListEmpty (&MapInfo->HandleList)) {\r
+ MapHandleInfo = MAP_HANDLE_INFO_FROM_LINK (MapInfo->HandleList.ForwardLink);\r
+ RemoveEntryList (&MapHandleInfo->Link);\r
+ FreePool (MapHandleInfo);\r
+ }\r
\r
if (MapInfo->DeviceAddress != MapInfo->HostAddress) {\r
//\r
\r
@retval EFI_SUCCESS The requested memory pages were allocated.\r
@retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are\r
- MEMORY_WRITE_COMBINE and MEMORY_CACHED.\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
\r
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