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authorerictian <erictian@6f19259b-4bc3-4df7-8a09-765794883524>2010-03-19 06:54:35 +0000
committererictian <erictian@6f19259b-4bc3-4df7-8a09-765794883524>2010-03-19 06:54:35 +0000
commitaa91de055c5e15a716f3a0ce6bf5a1c28fda9e56 (patch)
tree33ac167e3bd420086aeb2fecabc0332733f4130d /MdeModulePkg
parent33f30f1ee3490739c6b84de1bbecc3f9a63a5591 (diff)
downloadedk2-platforms-aa91de055c5e15a716f3a0ce6bf5a1c28fda9e56.tar.xz
Fix a bug that usb keybarod can not work well when it is inserted at a usb 2.0 hub.
It's due to AsyncInterruptList does not update the corresponding QTDHw->Data with pci bus master address. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10286 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg')
-rw-r--r--MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c7
-rw-r--r--MdeModulePkg/Bus/Pci/UhciDxe/Uhci.c38
-rw-r--r--MdeModulePkg/Bus/Pci/UhciDxe/Uhci.h4
-rw-r--r--MdeModulePkg/Bus/Pci/UhciDxe/UhciQueue.c35
-rw-r--r--MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.c112
-rw-r--r--MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.h2
-rw-r--r--MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.c49
-rw-r--r--MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.h17
8 files changed, 122 insertions, 142 deletions
diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c b/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c
index 58d4a303dc..0b9d7608ac 100644
--- a/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c
+++ b/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c
@@ -904,7 +904,12 @@ EhcUpdateAsyncRequest (
QtdHw->ErrCnt = QTD_MAX_ERR;
QtdHw->CurPage = 0;
QtdHw->TotalBytes = (UINT32) Qtd->DataLen;
- QtdHw->Page[0] = EHC_LOW_32BIT (Qtd->Data);
+ //
+ // calculate physical address by offset.
+ //
+ PciAddr = (UINTN)Urb->DataPhy + ((UINTN)Qtd->Data - (UINTN)Urb->Data);
+ QtdHw->Page[0] = EHC_LOW_32BIT (PciAddr);
+ QtdHw->PageHigh[0]= EHC_HIGH_32BIT (PciAddr);
}
//
diff --git a/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.c b/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.c
index c2d560b48c..bc7cfb9c90 100644
--- a/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.c
+++ b/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.c
@@ -949,7 +949,6 @@ Uhci2AsyncInterruptTransfer (
EFI_STATUS Status;
UINT8 *DataPtr;
UINT8 *DataPhy;
- VOID *DataMap;
UINT8 PktId;
Uhc = UHC_FROM_USB2_HC_PROTO (This);
@@ -957,7 +956,6 @@ Uhci2AsyncInterruptTransfer (
IntTds = NULL;
DataPtr = NULL;
DataPhy = NULL;
- DataMap = NULL;
IsSlowDevice = (BOOLEAN) ((EFI_USB_SPEED_LOW == DeviceSpeed) ? TRUE : FALSE);
@@ -998,40 +996,30 @@ Uhci2AsyncInterruptTransfer (
return EFI_DEVICE_ERROR;
}
+ if ((EndPointAddress & 0x80) == 0) {
+ PktId = OUTPUT_PACKET_ID;
+ } else {
+ PktId = INPUT_PACKET_ID;
+ }
+
//
// Allocate and map source data buffer for bus master access.
//
- DataPtr = UsbHcAllocateMem (Uhc->MemPool, DataLength);
+ DataPtr = UsbHcAllocateMem (Uhc->MemPool, DataLength);
if (DataPtr == NULL) {
return EFI_OUT_OF_RESOURCES;
}
- OldTpl = gBS->RaiseTPL (UHCI_TPL);
-
- //
- // Map the user data then create a queue head and
- // list of TD for it.
- //
- Status = UhciMapUserData (
- Uhc,
- EfiUsbDataIn,
- DataPtr,
- &DataLength,
- &PktId,
- &DataPhy,
- &DataMap
- );
+ DataPhy = (UINT8 *)UsbHcGetPciAddressForHostMem (Uhc->MemPool, DataPtr, DataLength);
- if (EFI_ERROR (Status)) {
- goto FREE_DATA;
- }
+ OldTpl = gBS->RaiseTPL (UHCI_TPL);
Qh = UhciCreateQh (Uhc, PollingInterval);
if (Qh == NULL) {
Status = EFI_OUT_OF_RESOURCES;
- goto UNMAP_DATA;
+ goto FREE_DATA;
}
IntTds = UhciCreateBulkOrIntTds (
@@ -1066,7 +1054,6 @@ Uhci2AsyncInterruptTransfer (
EndPointAddress,
DataLength,
PollingInterval,
- DataMap,
DataPtr,
CallBackFunction,
Context,
@@ -1085,11 +1072,8 @@ Uhci2AsyncInterruptTransfer (
DESTORY_QH:
UsbHcFreeMem (Uhc->MemPool, Qh, sizeof (UHCI_QH_SW));
-UNMAP_DATA:
- Uhc->PciIo->Unmap (Uhc->PciIo, DataMap);
-
FREE_DATA:
- gBS->FreePool (DataPtr);
+ UsbHcFreeMem (Uhc->MemPool, DataPtr, DataLength);
Uhc->PciIo->Flush (Uhc->PciIo);
gBS->RestoreTPL (OldTpl);
diff --git a/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.h b/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.h
index c2377bf3a7..096af24802 100644
--- a/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.h
+++ b/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.h
@@ -117,8 +117,8 @@ struct _USB_HC_DEV {
//
// Schedule data structures
//
- UINT32 *FrameBase;
- UINT32 *FrameBasePciMemAddr;
+ UINT32 *FrameBase; // the buffer pointed by this pointer is used to store pci bus address of the QH descriptor.
+ UINT32 *FrameBaseHostAddr; // the buffer pointed by this pointer is used to store host memory address of the QH descriptor.
UHCI_QH_SW *SyncIntQh;
UHCI_QH_SW *CtrlQh;
UHCI_QH_SW *BulkQh;
diff --git a/MdeModulePkg/Bus/Pci/UhciDxe/UhciQueue.c b/MdeModulePkg/Bus/Pci/UhciDxe/UhciQueue.c
index a816956bbe..39dbe4ceb7 100644
--- a/MdeModulePkg/Bus/Pci/UhciDxe/UhciQueue.c
+++ b/MdeModulePkg/Bus/Pci/UhciDxe/UhciQueue.c
@@ -2,7 +2,7 @@
The UHCI register operation routines.
-Copyright (c) 2007 - 2008, Intel Corporation
+Copyright (c) 2007 - 2010, Intel Corporation
All rights reserved. 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
@@ -164,22 +164,11 @@ UhciLinkTdToQh (
IN UHCI_TD_SW *Td
)
{
- EFI_STATUS Status;
- UINTN Len;
EFI_PHYSICAL_ADDRESS PhyAddr;
- VOID* Map;
- Len = sizeof (UHCI_TD_HW);
- Status = Uhc->PciIo->Map (
- Uhc->PciIo,
- EfiPciIoOperationBusMasterRead,
- Td,
- &Len,
- &PhyAddr,
- &Map
- );
+ PhyAddr = UsbHcGetPciAddressForHostMem (Uhc->MemPool, Td, sizeof (UHCI_TD_HW));
- ASSERT (!EFI_ERROR (Status) && (Qh != NULL) && (Td != NULL));
+ ASSERT ((Qh != NULL) && (Td != NULL));
Qh->QhHw.VerticalLink = QH_VLINK (PhyAddr, FALSE);
Qh->TDs = (VOID *) Td;
@@ -221,22 +210,11 @@ UhciAppendTd (
IN UHCI_TD_SW *ThisTd
)
{
- EFI_STATUS Status;
- UINTN Len;
EFI_PHYSICAL_ADDRESS PhyAddr;
- VOID* Map;
- Len = sizeof (UHCI_TD_HW);
- Status = Uhc->PciIo->Map (
- Uhc->PciIo,
- EfiPciIoOperationBusMasterRead,
- ThisTd,
- &Len,
- &PhyAddr,
- &Map
- );
+ PhyAddr = UsbHcGetPciAddressForHostMem (Uhc->MemPool, ThisTd, sizeof (UHCI_TD_HW));
- ASSERT (!EFI_ERROR (Status) && (PrevTd != NULL) && (ThisTd != NULL));
+ ASSERT ((PrevTd != NULL) && (ThisTd != NULL));
PrevTd->TdHw.NextLink = TD_LINK (PhyAddr, TRUE, FALSE);
PrevTd->NextTd = (VOID *) ThisTd;
@@ -324,6 +302,7 @@ UhciCreateTd (
return NULL;
}
+ Td->TdHw.NextLink = TD_LINK (NULL, FALSE, TRUE);
Td->NextTd = NULL;
Td->Data = NULL;
Td->DataLen = 0;
@@ -428,7 +407,7 @@ UhciCreateDataTd (
Td->TdHw.ShortPacket = FALSE;
Td->TdHw.IsIsoch = FALSE;
Td->TdHw.IntOnCpl = FALSE;
- Td->TdHw.ErrorCount = 0X03;
+ Td->TdHw.ErrorCount = 0x03;
Td->TdHw.Status = USBTD_ACTIVE;
Td->TdHw.LowSpeed = IsLow ? 1 : 0;
Td->TdHw.DataToggle = Toggle & 0x01;
diff --git a/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.c b/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.c
index 759f7a05cb..4d6957d70a 100644
--- a/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.c
+++ b/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.c
@@ -2,7 +2,7 @@
The EHCI register operation routines.
-Copyright (c) 2007 - 2009, Intel Corporation
+Copyright (c) 2007 - 2010, Intel Corporation
All rights reserved. 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
@@ -38,7 +38,6 @@ UhciInitFrameList (
UINTN Pages;
UINTN Bytes;
UINTN Index;
- UINTN Len;
EFI_PHYSICAL_ADDRESS PhyAddr;
//
@@ -77,11 +76,16 @@ UhciInitFrameList (
goto ON_ERROR;
}
- Uhc->FrameBase = (UINT32 *) (UINTN) Buffer; // Cpu memory address
- Uhc->FrameBasePciMemAddr = (UINT32 *) (UINTN) MappedAddr; // Pci memory address
+ Uhc->FrameBase = (UINT32 *) (UINTN) Buffer;
Uhc->FrameMapping = Mapping;
//
+ // Tell the Host Controller where the Frame List lies,
+ // by set the Frame List Base Address Register.
+ //
+ UhciSetFrameListBaseAddr (Uhc->PciIo, (VOID *) MappedAddr);
+
+ //
// Allocate the QH used by sync interrupt/control/bulk transfer.
// FS ctrl/bulk queue head is set to loopback so additional BW
// can be reclaimed. Notice, LS don't support bulk transfer and
@@ -104,30 +108,11 @@ UhciInitFrameList (
// Each frame entry is linked to this sequence of QH. These QH
// will remain on the schedul, never got removed
//
- Len = sizeof (UHCI_QH_HW);
- Status = Uhc->PciIo->Map (
- Uhc->PciIo,
- EfiPciIoOperationBusMasterRead,
- Uhc->CtrlQh,
- &Len,
- &PhyAddr,
- &Mapping
- );
- ASSERT (!EFI_ERROR (Status));
-
+ PhyAddr = UsbHcGetPciAddressForHostMem (Uhc->MemPool, Uhc->CtrlQh, sizeof (UHCI_QH_HW));
Uhc->SyncIntQh->QhHw.HorizonLink = QH_HLINK (PhyAddr, FALSE);
Uhc->SyncIntQh->NextQh = Uhc->CtrlQh;
- Status = Uhc->PciIo->Map (
- Uhc->PciIo,
- EfiPciIoOperationBusMasterRead,
- Uhc->BulkQh,
- &Len,
- &PhyAddr,
- &Mapping
- );
- ASSERT (!EFI_ERROR (Status));
-
+ PhyAddr = UsbHcGetPciAddressForHostMem (Uhc->MemPool, Uhc->BulkQh, sizeof (UHCI_QH_HW));
Uhc->CtrlQh->QhHw.HorizonLink = QH_HLINK (PhyAddr, FALSE);
Uhc->CtrlQh->NextQh = Uhc->BulkQh;
@@ -140,27 +125,18 @@ UhciInitFrameList (
Uhc->BulkQh->NextQh = NULL;
- Len = sizeof (UHCI_QH_HW);
- Status = Uhc->PciIo->Map (
- Uhc->PciIo,
- EfiPciIoOperationBusMasterRead,
- Uhc->SyncIntQh,
- &Len,
- &PhyAddr,
- &Mapping
- );
- ASSERT (!EFI_ERROR (Status));
+ Uhc->FrameBaseHostAddr = AllocateZeroPool (4096);
+ if (Uhc->FrameBaseHostAddr == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto ON_ERROR;
+ }
+ PhyAddr = UsbHcGetPciAddressForHostMem (Uhc->MemPool, Uhc->SyncIntQh, sizeof (UHCI_QH_HW));
for (Index = 0; Index < UHCI_FRAME_NUM; Index++) {
- Uhc->FrameBase[Index] = QH_HLINK (Uhc->SyncIntQh, FALSE);
- Uhc->FrameBasePciMemAddr[Index] = QH_HLINK (PhyAddr, FALSE);
+ Uhc->FrameBase[Index] = QH_HLINK (PhyAddr, FALSE);
+ Uhc->FrameBaseHostAddr[Index] = (UINT32)(UINTN)Uhc->SyncIntQh;
}
- //
- // Tell the Host Controller where the Frame List lies,
- // by set the Frame List Base Address Register.
- //
- UhciSetFrameListBaseAddr (Uhc->PciIo, (VOID *) (Uhc->FrameBasePciMemAddr));
return EFI_SUCCESS;
ON_ERROR:
@@ -205,6 +181,10 @@ UhciDestoryFrameList (
(VOID *) Uhc->FrameBase
);
+ if (Uhc->FrameBaseHostAddr != NULL) {
+ FreePool (Uhc->FrameBaseHostAddr);
+ }
+
if (Uhc->SyncIntQh != NULL) {
UsbHcFreeMem (Uhc->MemPool, Uhc->SyncIntQh, sizeof (UHCI_QH_SW));
}
@@ -218,7 +198,7 @@ UhciDestoryFrameList (
}
Uhc->FrameBase = NULL;
- Uhc->FrameBasePciMemAddr = NULL;
+ Uhc->FrameBaseHostAddr = NULL;
Uhc->SyncIntQh = NULL;
Uhc->CtrlQh = NULL;
Uhc->BulkQh = NULL;
@@ -274,24 +254,12 @@ UhciLinkQhToFrameList (
UINTN Index;
UHCI_QH_SW *Prev;
UHCI_QH_SW *Next;
- UINTN Len;
EFI_PHYSICAL_ADDRESS PhyAddr;
EFI_PHYSICAL_ADDRESS QhPciAddr;
- VOID* Map;
- EFI_STATUS Status;
ASSERT ((Uhc->FrameBase != NULL) && (Qh != NULL));
- Len = sizeof (UHCI_QH_HW);
- Status = Uhc->PciIo->Map (
- Uhc->PciIo,
- EfiPciIoOperationBusMasterRead,
- Qh,
- &Len,
- &QhPciAddr,
- &Map
- );
- ASSERT (!EFI_ERROR (Status));
+ QhPciAddr = UsbHcGetPciAddressForHostMem (Uhc->MemPool, Qh, sizeof (UHCI_QH_HW));
for (Index = 0; Index < UHCI_FRAME_NUM; Index += Qh->Interval) {
//
@@ -299,7 +267,7 @@ UhciLinkQhToFrameList (
// heads on the frame list
//
ASSERT (!LINK_TERMINATED (Uhc->FrameBase[Index]));
- Next = UHCI_ADDR (Uhc->FrameBase[Index]);
+ Next = (UHCI_QH_SW*)(UINTN)Uhc->FrameBaseHostAddr[Index];
Prev = NULL;
//
@@ -362,24 +330,13 @@ UhciLinkQhToFrameList (
//
if (Qh->NextQh == NULL) {
Qh->NextQh = Next;
-
- Len = sizeof (UHCI_QH_HW);
- Status = Uhc->PciIo->Map (
- Uhc->PciIo,
- EfiPciIoOperationBusMasterRead,
- Next,
- &Len,
- &PhyAddr,
- &Map
- );
- ASSERT (!EFI_ERROR (Status));
-
+ PhyAddr = UsbHcGetPciAddressForHostMem (Uhc->MemPool, Next, sizeof (UHCI_QH_HW));
Qh->QhHw.HorizonLink = QH_HLINK (PhyAddr, FALSE);
}
if (Prev == NULL) {
- Uhc->FrameBase[Index] = QH_HLINK (Qh, FALSE);
- Uhc->FrameBasePciMemAddr[Index] = QH_HLINK (QhPciAddr, FALSE);
+ Uhc->FrameBase[Index] = QH_HLINK (QhPciAddr, FALSE);
+ Uhc->FrameBaseHostAddr[Index] = (UINT32)(UINTN)Qh;
} else {
Prev->NextQh = Qh;
Prev->QhHw.HorizonLink = QH_HLINK (QhPciAddr, FALSE);
@@ -415,7 +372,7 @@ UhciUnlinkQhFromFrameList (
// queue heads on the frame list
//
ASSERT (!LINK_TERMINATED (Uhc->FrameBase[Index]));
- This = UHCI_ADDR (Uhc->FrameBase[Index]);
+ This = (UHCI_QH_SW*)(UINTN)Uhc->FrameBaseHostAddr[Index];
Prev = NULL;
//
@@ -439,8 +396,8 @@ UhciUnlinkQhFromFrameList (
//
// Qh is the first entry in the frame
//
- Uhc->FrameBase[Index] = (UINT32)(UINTN)Qh->NextQh;
- Uhc->FrameBasePciMemAddr[Index] = Qh->QhHw.HorizonLink;
+ Uhc->FrameBase[Index] = Qh->QhHw.HorizonLink;
+ Uhc->FrameBaseHostAddr[Index] = (UINT32)(UINTN)Qh->NextQh;
} else {
Prev->NextQh = Qh->NextQh;
Prev->QhHw.HorizonLink = Qh->QhHw.HorizonLink;
@@ -712,7 +669,6 @@ UhciUpdateAsyncReq (
@param EndPoint EndPoint Address.
@param DataLen Data length.
@param Interval Polling Interval when inserted to frame list.
- @param Mapping Mapping value.
@param Data Data buffer, unmapped.
@param Callback Callback after interrupt transfeer.
@param Context Callback Context passed as function parameter.
@@ -732,7 +688,6 @@ UhciCreateAsyncReq (
IN UINT8 EndPoint,
IN UINTN DataLen,
IN UINTN Interval,
- IN VOID *Mapping,
IN UINT8 *Data,
IN EFI_ASYNC_USB_TRANSFER_CALLBACK Callback,
IN VOID *Context,
@@ -755,7 +710,6 @@ UhciCreateAsyncReq (
AsyncReq->EndPoint = EndPoint;
AsyncReq->DataLen = DataLen;
AsyncReq->Interval = UhciConvertPollRate(Interval);
- AsyncReq->Mapping = Mapping;
AsyncReq->Data = Data;
AsyncReq->Callback = Callback;
AsyncReq->Context = Context;
@@ -793,10 +747,6 @@ UhciFreeAsyncReq (
UhciDestoryTds (Uhc, AsyncReq->FirstTd);
UsbHcFreeMem (Uhc->MemPool, AsyncReq->QhSw, sizeof (UHCI_QH_SW));
- if (AsyncReq->Mapping != NULL) {
- Uhc->PciIo->Unmap (Uhc->PciIo, AsyncReq->Mapping);
- }
-
if (AsyncReq->Data != NULL) {
UsbHcFreeMem (Uhc->MemPool, AsyncReq->Data, AsyncReq->DataLen);
}
diff --git a/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.h b/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.h
index 310dfa0ab2..e46aa88bff 100644
--- a/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.h
+++ b/MdeModulePkg/Bus/Pci/UhciDxe/UhciSched.h
@@ -190,7 +190,6 @@ UhciExecuteTransfer (
@param EndPoint EndPoint Address.
@param DataLen Data length.
@param Interval Polling Interval when inserted to frame list.
- @param Mapping Mapping value.
@param Data Data buffer, unmapped.
@param Callback Callback after interrupt transfeer.
@param Context Callback Context passed as function parameter.
@@ -210,7 +209,6 @@ UhciCreateAsyncReq (
IN UINT8 EndPoint,
IN UINTN DataLen,
IN UINTN Interval,
- IN VOID *Mapping,
IN UINT8 *Data,
IN EFI_ASYNC_USB_TRANSFER_CALLBACK Callback,
IN VOID *Context,
diff --git a/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.c b/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.c
index ca7877da1d..074451d9b3 100644
--- a/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.c
+++ b/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.c
@@ -2,7 +2,7 @@
The routine procedure for uhci memory allocate/free.
-Copyright (c) 2007, Intel Corporation
+Copyright (c) 2007 - 2010, Intel Corporation
All rights reserved. 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
@@ -220,6 +220,53 @@ UsbHcAllocMemFromBlock (
return Block->Buf + (StartByte * 8 + StartBit) * USBHC_MEM_UNIT;
}
+/**
+ Calculate the corresponding pci bus address according to the Mem parameter.
+
+ @param Pool The memory pool of the host controller.
+ @param Mem The pointer to host memory.
+ @param Size The size of the memory region.
+
+ @return the pci memory address
+**/
+EFI_PHYSICAL_ADDRESS
+UsbHcGetPciAddressForHostMem (
+ IN USBHC_MEM_POOL *Pool,
+ IN VOID *Mem,
+ IN UINTN Size
+ )
+{
+ USBHC_MEM_BLOCK *Head;
+ USBHC_MEM_BLOCK *Block;
+ UINTN AllocSize;
+ EFI_PHYSICAL_ADDRESS PhyAddr;
+ UINTN Offset;
+
+ Head = Pool->Head;
+ AllocSize = USBHC_MEM_ROUND (Size);
+
+ if (Mem == NULL) {
+ return 0;
+ }
+
+ for (Block = Head; Block != NULL; Block = Block->Next) {
+ //
+ // scan the memory block list for the memory block that
+ // completely contains the allocated memory.
+ //
+ if ((Block->BufHost <= (UINT8 *) Mem) && (((UINT8 *) Mem + AllocSize) <= (Block->BufHost + Block->BufLen))) {
+ break;
+ }
+ }
+
+ ASSERT ((Block != NULL));
+ //
+ // calculate the pci memory address for host memory address.
+ //
+ Offset = (UINT8 *)Mem - Block->BufHost;
+ PhyAddr = (EFI_PHYSICAL_ADDRESS)(UINTN) (Block->Buf + Offset);
+ return PhyAddr;
+}
/**
Insert the memory block to the pool's list of the blocks.
diff --git a/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.h b/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.h
index 5ad9f97683..2d69a927d8 100644
--- a/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.h
+++ b/MdeModulePkg/Bus/Pci/UhciDxe/UsbHcMem.h
@@ -141,4 +141,21 @@ UsbHcFreeMem (
IN VOID *Mem,
IN UINTN Size
);
+
+/**
+ Calculate the corresponding pci bus address according to the Mem parameter.
+
+ @param Pool The memory pool of the host controller.
+ @param Mem The pointer to host memory.
+ @param Size The size of the memory region.
+
+ @return the pci memory address
+**/
+EFI_PHYSICAL_ADDRESS
+UsbHcGetPciAddressForHostMem (
+ IN USBHC_MEM_POOL *Pool,
+ IN VOID *Mem,
+ IN UINTN Size
+ );
+
#endif