/** @file
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OHCI transfer scheduling routines.
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Copyright (c) 2013-2015 Intel Corporation.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "OhcPeim.h"
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/**
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Convert Error code from OHCI format to EFI format
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@Param ErrorCode ErrorCode in OHCI format
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@retval ErrorCode in EFI format
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**/
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UINT32
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ConvertErrorCode (
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IN UINT32 ErrorCode
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)
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{
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UINT32 TransferResult;
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switch (ErrorCode) {
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case TD_NO_ERROR:
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TransferResult = EFI_USB_NOERROR;
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break;
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case TD_TOBE_PROCESSED:
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case TD_TOBE_PROCESSED_2:
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TransferResult = EFI_USB_ERR_NOTEXECUTE;
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break;
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case TD_DEVICE_STALL:
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TransferResult = EFI_USB_ERR_STALL;
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break;
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case TD_BUFFER_OVERRUN:
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case TD_BUFFER_UNDERRUN:
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TransferResult = EFI_USB_ERR_BUFFER;
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break;
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case TD_CRC_ERROR:
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TransferResult = EFI_USB_ERR_CRC;
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break;
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case TD_NO_RESPONSE:
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TransferResult = EFI_USB_ERR_TIMEOUT;
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break;
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case TD_BITSTUFFING_ERROR:
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TransferResult = EFI_USB_ERR_BITSTUFF;
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break;
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default:
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TransferResult = EFI_USB_ERR_SYSTEM;
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}
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return TransferResult;
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}
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/**
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Check TDs Results
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@Param Ohc UHC private data
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@Param Td TD_DESCRIPTOR
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@Param Result Result to return
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@retval TRUE means OK
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@retval FLASE means Error or Short packet
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**/
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BOOLEAN
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OhciCheckTDsResults (
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IN USB_OHCI_HC_DEV *Ohc,
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IN TD_DESCRIPTOR *Td,
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OUT UINT32 *Result
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)
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{
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UINT32 TdCompletionCode;
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*Result = EFI_USB_NOERROR;
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while (Td) {
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TdCompletionCode = Td->Word0.ConditionCode;
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*Result |= ConvertErrorCode(TdCompletionCode);
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//
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// if any error encountered, stop processing the left TDs.
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//
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if (*Result) {
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return FALSE;
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}
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Td = Td->NextTDPointer;
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}
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return TRUE;
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}
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/**
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Check the task status on an ED
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@Param Ed Pointer to the ED task that TD hooked on
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@Param HeadTd TD header for current transaction
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@retval Task Status Code
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**/
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UINT32
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CheckEDStatus (
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IN ED_DESCRIPTOR *Ed,
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IN TD_DESCRIPTOR *HeadTd
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)
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{
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while(HeadTd != NULL) {
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if (HeadTd->Word0.ConditionCode != 0) {
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return HeadTd->Word0.ConditionCode;
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}
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HeadTd = HeadTd->NextTDPointer;
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}
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if (OhciGetEDField (Ed, ED_TDHEAD_PTR) != OhciGetEDField (Ed, ED_TDTAIL_PTR)) {
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return TD_TOBE_PROCESSED;
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}
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return TD_NO_ERROR;
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}
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/**
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Check the task status
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@Param Ohc UHC private data
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@Param ListType Pipe type
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@Param Ed Pointer to the ED task hooked on
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@Param HeadTd Head of TD corresponding to the task
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@Param ErrorCode return the ErrorCode
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@retval EFI_SUCCESS Task done
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@retval EFI_NOT_READY Task on processing
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@retval EFI_DEVICE_ERROR Some error occured
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**/
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EFI_STATUS
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CheckIfDone (
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IN USB_OHCI_HC_DEV *Ohc,
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IN DESCRIPTOR_LIST_TYPE ListType,
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IN ED_DESCRIPTOR *Ed,
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IN TD_DESCRIPTOR *HeadTd,
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OUT UINT32 *ErrorCode
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)
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{
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*ErrorCode = TD_TOBE_PROCESSED;
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switch (ListType) {
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case CONTROL_LIST:
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if (OhciGetHcCommandStatus (Ohc, CONTROL_LIST_FILLED) != 0) {
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return EFI_NOT_READY;
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}
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break;
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case BULK_LIST:
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if (OhciGetHcCommandStatus (Ohc, BULK_LIST_FILLED) != 0) {
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return EFI_NOT_READY;
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}
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break;
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default:
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break;
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}
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*ErrorCode = CheckEDStatus (Ed, HeadTd);
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if (*ErrorCode == TD_NO_ERROR) {
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return EFI_SUCCESS;
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} else if (*ErrorCode == TD_TOBE_PROCESSED) {
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return EFI_NOT_READY;
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} else {
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return EFI_DEVICE_ERROR;
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}
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}
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/**
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Convert TD condition code to Efi Status
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@Param ConditionCode Condition code to convert
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@retval EFI_SUCCESS No error occured
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@retval EFI_NOT_READY TD still on processing
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@retval EFI_DEVICE_ERROR Error occured in processing TD
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**/
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EFI_STATUS
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OhciTDConditionCodeToStatus (
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IN UINT32 ConditionCode
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)
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{
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if (ConditionCode == TD_NO_ERROR) {
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return EFI_SUCCESS;
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}
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if (ConditionCode == TD_TOBE_PROCESSED) {
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return EFI_NOT_READY;
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}
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return EFI_DEVICE_ERROR;
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}
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