/** @file\r
BmDma related function\r
\r
- Copyright (c) 2017, 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
- http://opensource.org/licenses/bsd-license.php\r
-\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+ Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\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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