return;\r
}\r
\r
-/**\r
- Link a queue head for interrupt transfer to the periodic\r
- schedule frame list. This code is very much the same as\r
- that in UHCI.\r
- \r
- @param Ehc The EHCI device.\r
- @param Qh The queue head to link.\r
-\r
-**/\r
-VOID\r
-EhcLinkQhToPeriod (\r
- IN PEI_USB2_HC_DEV *Ehc,\r
- IN PEI_EHC_QH *Qh\r
- )\r
-{\r
- UINT32 *Frames;\r
- UINTN Index;\r
- PEI_EHC_QH *Prev;\r
- PEI_EHC_QH *Next;\r
-\r
- Frames = Ehc->PeriodFrame;\r
-\r
- for (Index = 0; Index < EHC_FRAME_LEN; Index += Qh->Interval) {\r
- //\r
- // First QH can't be NULL because we always keep PeriodOne\r
- // heads on the frame list\r
- //\r
- ASSERT (!EHC_LINK_TERMINATED (Frames[Index]));\r
- Next = EHC_ADDR (Ehc->High32bitAddr, Frames[Index]);\r
- Prev = NULL;\r
-\r
- //\r
- // Now, insert the queue head (Qh) into this frame:\r
- // 1. Find a queue head with the same poll interval, just insert\r
- // Qh after this queue head, then we are done.\r
- //\r
- // 2. Find the position to insert the queue head into:\r
- // Previous head's interval is bigger than Qh's\r
- // Next head's interval is less than Qh's\r
- // Then, insert the Qh between then\r
- //\r
- while (Next->Interval > Qh->Interval) {\r
- Prev = Next;\r
- Next = Next->NextQh;\r
- }\r
-\r
- ASSERT (Next != NULL);\r
-\r
- //\r
- // The entry may have been linked into the frame by early insertation.\r
- // For example: if insert a Qh with Qh.Interval == 4, and there is a Qh\r
- // with Qh.Interval == 8 on the frame. If so, we are done with this frame.\r
- // It isn't necessary to compare all the QH with the same interval to\r
- // Qh. This is because if there is other QH with the same interval, Qh\r
- // should has been inserted after that at Frames[0] and at Frames[0] it is\r
- // impossible for (Next == Qh)\r
- //\r
- if (Next == Qh) {\r
- continue;\r
- }\r
-\r
- if (Next->Interval == Qh->Interval) {\r
- //\r
- // If there is a QH with the same interval, it locates at\r
- // Frames[0], and we can simply insert it after this QH. We\r
- // are all done.\r
- //\r
- ASSERT ((Index == 0) && (Qh->NextQh == NULL));\r
-\r
- Prev = Next;\r
- Next = Next->NextQh;\r
-\r
- Qh->NextQh = Next;\r
- Prev->NextQh = Qh;\r
-\r
- Qh->QhHw.HorizonLink = Prev->QhHw.HorizonLink;\r
- Prev->QhHw.HorizonLink = QH_LINK (Qh, EHC_TYPE_QH, FALSE);\r
- break;\r
- }\r
- \r
- //\r
- // OK, find the right position, insert it in. If Qh's next\r
- // link has already been set, it is in position. This is\r
- // guarranted by 2^n polling interval.\r
- //\r
- if (Qh->NextQh == NULL) {\r
- Qh->NextQh = Next;\r
- Qh->QhHw.HorizonLink = QH_LINK (Next, EHC_TYPE_QH, FALSE);\r
- }\r
-\r
- if (Prev == NULL) {\r
- Frames[Index] = QH_LINK (Qh, EHC_TYPE_QH, FALSE);\r
- } else {\r
- Prev->NextQh = Qh;\r
- Prev->QhHw.HorizonLink = QH_LINK (Qh, EHC_TYPE_QH, FALSE);\r
- }\r
- }\r
-}\r
-\r
-/**\r
- Unlink an interrupt queue head from the periodic \r
- schedule frame list.\r
- \r
- @param Ehc The EHCI device.\r
- @param Qh The queue head to unlink.\r
-\r
-**/\r
-VOID\r
-EhcUnlinkQhFromPeriod (\r
- IN PEI_USB2_HC_DEV *Ehc,\r
- IN PEI_EHC_QH *Qh\r
- )\r
-{\r
- UINT32 *Frames;\r
- UINTN Index;\r
- PEI_EHC_QH *Prev;\r
- PEI_EHC_QH *This;\r
-\r
- Frames = Ehc->PeriodFrame;\r
-\r
- for (Index = 0; Index < EHC_FRAME_LEN; Index += Qh->Interval) {\r
- //\r
- // Frame link can't be NULL because we always keep PeroidOne\r
- // on the frame list\r
- //\r
- ASSERT (!EHC_LINK_TERMINATED (Frames[Index]));\r
- This = EHC_ADDR (Ehc->High32bitAddr, Frames[Index]);\r
- Prev = NULL;\r
-\r
- //\r
- // Walk through the frame's QH list to find the\r
- // queue head to remove\r
- //\r
- while ((This != NULL) && (This != Qh)) {\r
- Prev = This;\r
- This = This->NextQh;\r
- }\r
- \r
- //\r
- // Qh may have already been unlinked from this frame\r
- // by early action. See the comments in EhcLinkQhToPeriod.\r
- //\r
- if (This == NULL) {\r
- continue;\r
- }\r
-\r
- if (Prev == NULL) {\r
- //\r
- // Qh is the first entry in the frame\r
- //\r
- Frames[Index] = Qh->QhHw.HorizonLink;\r
- } else {\r
- Prev->NextQh = Qh->NextQh;\r
- Prev->QhHw.HorizonLink = Qh->QhHw.HorizonLink;\r
- }\r
- }\r
-}\r
-\r
/**\r
Check the URB's execution result and update the URB's\r
result accordingly. \r
return Status;\r
}\r
\r
-/**\r
- Delete a single asynchronous interrupt transfer for\r
- the device and endpoint.\r
- \r
- @param Ehc The EHCI device.\r
- @param DevAddr The address of the target device.\r
- @param EpNum The endpoint of the target.\r
- @param DataToggle Return the next data toggle to use.\r
-\r
- @retval EFI_NOT_FOUND No transfer for the device is found.\r
- @retval EFI_SUCCESS An asynchronous transfer is removed.\r
-\r
-**/\r
-EFI_STATUS\r
-EhciDelAsyncIntTransfer (\r
- IN PEI_USB2_HC_DEV *Ehc,\r
- IN UINT8 DevAddr,\r
- IN UINT8 EpNum, \r
- OUT UINT8 *DataToggle\r
- )\r
-{\r
- EFI_LIST_ENTRY *Entry;\r
- EFI_LIST_ENTRY *Next;\r
- PEI_URB *Urb;\r
- EFI_USB_DATA_DIRECTION Direction;\r
-\r
- Direction = (((EpNum & 0x80) != 0) ? EfiUsbDataIn : EfiUsbDataOut);\r
- EpNum &= 0x0F;\r
-\r
- EFI_LIST_FOR_EACH_SAFE (Entry, Next, &Ehc->AsyncIntTransfers) {\r
- Urb = EFI_LIST_CONTAINER (Entry, PEI_URB, UrbList);\r
-\r
- if ((Urb->Ep.DevAddr == DevAddr) && (Urb->Ep.EpAddr == EpNum) && \r
- (Urb->Ep.Direction == Direction)) {\r
- //\r
- // Check the URB status to retrieve the next data toggle\r
- // from the associated queue head.\r
- //\r
- EhcCheckUrbResult (Ehc, Urb);\r
- *DataToggle = Urb->DataToggle;\r
-\r
- EhcUnlinkQhFromPeriod (Ehc, Urb->Qh);\r
- RemoveEntryList (&Urb->UrbList);\r
-\r
- EhcFreeUrb (Ehc, Urb);\r
- return EFI_SUCCESS;\r
- }\r
- }\r
-\r
- return EFI_NOT_FOUND;\r
-}\r
-\r
-/**\r
- Remove all the asynchronous interrutp transfers.\r
- \r
- @param Ehc The EHCI device.\r
-\r
-**/\r
-VOID\r
-EhciDelAllAsyncIntTransfers (\r
- IN PEI_USB2_HC_DEV *Ehc\r
- )\r
-{\r
- EFI_LIST_ENTRY *Entry;\r
- EFI_LIST_ENTRY *Next;\r
- PEI_URB *Urb;\r
-\r
- EFI_LIST_FOR_EACH_SAFE (Entry, Next, &Ehc->AsyncIntTransfers) {\r
- Urb = EFI_LIST_CONTAINER (Entry, PEI_URB, UrbList);\r
-\r
- EhcUnlinkQhFromPeriod (Ehc, Urb->Qh);\r
- RemoveEntryList (&Urb->UrbList);\r
-\r
- EhcFreeUrb (Ehc, Urb);\r
- }\r
-}\r
-\r
-/**\r
- Flush data from PCI controller specific address to mapped system \r
- memory address.\r
- \r
- @param Ehc The EHCI device.\r
- @param Urb The URB to unmap.\r
-\r
- @retval EFI_DEVICE_ERROR Fail to flush data to mapped system memory.\r
- @retval EFI_SUCCESS Success to flush data to mapped system memory.\r
-\r
-**/\r
-EFI_STATUS\r
-EhcFlushAsyncIntMap (\r
- IN PEI_USB2_HC_DEV *Ehc,\r
- IN PEI_URB *Urb\r
- )\r
-{\r
- EFI_PHYSICAL_ADDRESS PhyAddr;\r
-\r
- Urb->DataMap = NULL;\r
- PhyAddr = (EFI_PHYSICAL_ADDRESS) (UINTN) Urb->Data;\r
- Urb->DataPhy = (VOID *) ((UINTN) PhyAddr);\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Update the queue head for next round of asynchronous transfer.\r
-\r
- @param Urb The URB to update.\r
-\r
-**/\r
-VOID\r
-EhcUpdateAsyncRequest (\r
- IN PEI_URB *Urb\r
- )\r
-{\r
- EFI_LIST_ENTRY *Entry;\r
- PEI_EHC_QTD *FirstQtd;\r
- QH_HW *QhHw;\r
- PEI_EHC_QTD *Qtd;\r
- QTD_HW *QtdHw;\r
- UINTN Index;\r
-\r
- Qtd = NULL;\r
-\r
- if (Urb->Result == EFI_USB_NOERROR) {\r
- FirstQtd = NULL;\r
-\r
- EFI_LIST_FOR_EACH (Entry, &Urb->Qh->Qtds) {\r
- Qtd = EFI_LIST_CONTAINER (Entry, PEI_EHC_QTD, QtdList);\r
-\r
- if (FirstQtd == NULL) {\r
- FirstQtd = Qtd;\r
- }\r
- \r
- //\r
- // Update the QTD for next round of transfer. Host control\r
- // may change dt/Total Bytes to Transfer/C_Page/Cerr/Status/\r
- // Current Offset. These fields need to be updated. DT isn't\r
- // used by interrupt transfer. It uses DT in queue head.\r
- // Current Offset is in Page[0], only need to reset Page[0]\r
- // to initial data buffer.\r
- //\r
- QtdHw = &Qtd->QtdHw;\r
- QtdHw->Status = QTD_STAT_ACTIVE;\r
- QtdHw->ErrCnt = QTD_MAX_ERR;\r
- QtdHw->CurPage = 0;\r
- QtdHw->TotalBytes = (UINT32) Qtd->DataLen;\r
- QtdHw->Page[0] = EHC_LOW_32BIT (Qtd->Data);\r
- }\r
- \r
- //\r
- // Update QH for next round of transfer. Host control only\r
- // touch the fields in transfer overlay area. Only need to\r
- // zero out the overlay area and set NextQtd to the first\r
- // QTD. DateToggle bit is left untouched.\r
- //\r
- QhHw = &Urb->Qh->QhHw;\r
- QhHw->CurQtd = QTD_LINK (0, TRUE);\r
- QhHw->AltQtd = 0;\r
-\r
- QhHw->Status = 0;\r
- QhHw->Pid = 0;\r
- QhHw->ErrCnt = 0;\r
- QhHw->CurPage = 0;\r
- QhHw->Ioc = 0;\r
- QhHw->TotalBytes = 0;\r
-\r
- for (Index = 0; Index < 5; Index++) {\r
- QhHw->Page[Index] = 0;\r
- QhHw->PageHigh[Index] = 0;\r
- }\r
-\r
- QhHw->NextQtd = QTD_LINK (FirstQtd, FALSE);\r
- }\r
-\r
- return ;\r
-}\r
-\r
-/**\r
- Remove all the asynchronous interrutp transfers.\r
- \r
- @param Event Interrupt event.\r
- @param Context Pointer to PEI_USB2_HC_DEV.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-EhcMoniteAsyncRequests (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- )\r
-{\r
- PEI_USB2_HC_DEV *Ehc;\r
- EFI_LIST_ENTRY *Entry;\r
- EFI_LIST_ENTRY *Next;\r
- BOOLEAN Finished;\r
- UINT8 *ProcBuf;\r
- PEI_URB *Urb;\r
- UINTN PageNumber;\r
-\r
- Ehc = (PEI_USB2_HC_DEV *) Context;\r
-\r
- EFI_LIST_FOR_EACH_SAFE (Entry, Next, &Ehc->AsyncIntTransfers) {\r
- Urb = EFI_LIST_CONTAINER (Entry, PEI_URB, UrbList);\r
-\r
- //\r
- // Check the result of URB execution. If it is still\r
- // active, check the next one.\r
- //\r
- Finished = EhcCheckUrbResult (Ehc, Urb);\r
-\r
- if (!Finished) {\r
- continue;\r
- }\r
-\r
- //\r
- // Flush any PCI posted write transactions from a PCI host \r
- // bridge to system memory.\r
- //\r
- EhcFlushAsyncIntMap (Ehc, Urb);\r
- \r
- //\r
- // Allocate a buffer then copy the transferred data for user.\r
- // If failed to allocate the buffer, update the URB for next\r
- // round of transfer. Ignore the data of this round.\r
- //\r
- ProcBuf = NULL;\r
-\r
- if (Urb->Result == EFI_USB_NOERROR) {\r
- ASSERT (Urb->Completed <= Urb->DataLen);\r
- PageNumber = Urb->Completed/PAGESIZE +1;\r
- PeiServicesAllocatePages (\r
- EfiBootServicesCode,\r
- PageNumber,\r
- (EFI_PHYSICAL_ADDRESS *)ProcBuf\r
- );\r
- if (ProcBuf == NULL) {\r
- EhcUpdateAsyncRequest (Urb);\r
- continue;\r
- }\r
-\r
- CopyMem (ProcBuf, Urb->Data, Urb->Completed);\r
- }\r
-\r
- EhcUpdateAsyncRequest (Urb);\r
-\r
- //\r
- // Leave error recovery to its related device driver. A\r
- // common case of the error recovery is to re-submit the\r
- // interrupt transfer which is linked to the head of the\r
- // list. This function scans from head to tail. So the\r
- // re-submitted interrupt transfer's callback function\r
- // will not be called again in this round. Don't touch this\r
- // URB after the callback, it may have been removed by the\r
- // callback.\r
- //\r
- if (Urb->Callback != NULL) {\r
- (Urb->Callback) (ProcBuf, Urb->Completed, Urb->Context, Urb->Result);\r
- }\r
-\r
- if (ProcBuf != NULL) {\r
- }\r
- }\r
-}\r
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