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/*
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* SdioBusDrv.c
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*
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* Copyright(c) 1998 - 2010 Texas Instruments. All rights reserved.
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* All rights reserved.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Public License v1.0 or BSD License which accompanies
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* this distribution. The Eclipse Public License is available at
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* http://www.eclipse.org/legal/epl-v10.html and the BSD License is as below.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Texas Instruments nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/** \file SdioBusDrv.c
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* \brief The SDIO bus driver upper layer. Platform independent.
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* Uses the SdioAdapter API.
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* Introduces a generic bus-independent API upwards.
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*
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* \see BusDrv.h, SdioAdapter.h, SdioAdapter.c
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*/
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#define __FILE_ID__ FILE_ID_122
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#include "tidef.h"
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#include "report.h"
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#include "osApi.h"
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#include "TxnDefs.h"
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#include "SdioAdapter.h"
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#include "BusDrv.h"
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/************************************************************************
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* Defines
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************************************************************************/
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#undef USE_BLOCK_MODE /* Don't use SDIO block mode */
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#define MAX_TXN_PARTS MAX_XFER_BUFS * 2 /* Max number of txn parts derived from one TxnStruct */
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/************************************************************************
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* Types
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************************************************************************/
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/* A single SDIO bus transaction which is a part of a complete transaction (TTxnStruct) */
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typedef struct
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{
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TI_BOOL bBlkMode; /* If TRUE this is a block-mode SDIO transaction */
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TI_UINT32 uLength; /* Length in byte */
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TI_UINT32 uHwAddr; /* The device address to write to or read from */
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void * pHostAddr; /* The host buffer address to write from or read into */
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TI_BOOL bMore; /* If TRUE, indicates the lower driver to keep awake for more transactions */
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} TTxnPart;
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/* The busDrv module Object */
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typedef struct _TBusDrvObj
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{
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TI_HANDLE hOs;
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TI_HANDLE hReport;
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TBusDrvTxnDoneCb fTxnDoneCb; /* The callback to call upon full transaction completion. */
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TI_HANDLE hCbHandle; /* The callback handle */
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TTxnStruct * pCurrTxn; /* The transaction currently being processed */
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ETxnStatus eCurrTxnStatus; /* COMPLETE, PENDING or ERROR */
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TTxnPart aTxnParts[MAX_TXN_PARTS]; /* The actual bus transactions of current transaction */
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TI_UINT32 uCurrTxnPartsNum; /* Number of transaction parts composing the current transaction */
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TI_UINT32 uCurrTxnPartsCount; /* Number of transaction parts already executed */
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TI_UINT32 uBlkSizeShift; /* In block-mode: uBlkSize = (1 << uBlkSizeShift) = 512 bytes */
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TI_UINT32 uBlkSize; /* In block-mode: uBlkSize = (1 << uBlkSizeShift) = 512 bytes */
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TI_UINT32 uBlkSizeMask; /* In block-mode: uBlkSizeMask = uBlkSize - 1 = 0x1FF*/
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TI_HANDLE hWsdio;
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} TBusDrvObj;
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/************************************************************************
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* Internal functions prototypes
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************************************************************************/
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static void busDrv_PrepareTxnParts (TBusDrvObj *pBusDrv, TTxnStruct *pTxn);
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static void busDrv_SendTxnParts (TBusDrvObj *pBusDrv);
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static void busDrv_TxnDoneCb (TI_HANDLE hBusDrv, TI_INT32 status);
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/************************************************************************
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*
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* Module functions implementation
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*
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************************************************************************/
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/**
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* \fn busDrv_Create
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* \brief Create the module
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*
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* Create and clear the bus driver's object, and the SDIO-adapter.
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*
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* \note
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* \param hOs - Handle to Os Abstraction Layer
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* \return Handle of the allocated object, NULL if allocation failed
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* \sa busDrv_Destroy
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*/
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TI_HANDLE busDrv_Create (TI_HANDLE hOs)
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{
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TI_HANDLE hBusDrv;
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TBusDrvObj *pBusDrv;
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hBusDrv = os_memoryAlloc(hOs, sizeof(TBusDrvObj),MemoryNormal);
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if (hBusDrv == NULL)
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{
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WLAN_OS_REPORT(("SdioBusDrv.c - os_memoryAlloc - ERROR"));
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return NULL;
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}
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pBusDrv = (TBusDrvObj *)hBusDrv;
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os_memoryZero(hOs, hBusDrv, sizeof(TBusDrvObj));
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pBusDrv->hOs = hOs;
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pBusDrv->hWsdio = wsdioAdapt_Open(pBusDrv->hOs);
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return pBusDrv;
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}
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TI_HANDLE busDrv_Cfg (TI_HANDLE hOs)
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{
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TI_HANDLE hBusDrvCfg;
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TBusDrvCfg *pBusDrvCfg;
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//WLAN_OS_REPORT(("SdioBusDrv.c - busDrv_Create - BEGIN"));
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hBusDrvCfg = os_memoryAlloc(hOs, sizeof(TBusDrvCfg),MemoryNormal);
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if (hBusDrvCfg == NULL)
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{
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WLAN_OS_REPORT(("SdioBusDrv.c - os_memoryAlloc - ERROR"));
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return NULL;
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}
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pBusDrvCfg = (TBusDrvCfg *)hBusDrvCfg;
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return pBusDrvCfg;
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}
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/**
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* \fn busDrv_Destroy
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* \brief Destroy the module.
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*
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* Close SDIO lower bus driver and free the module's object.
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*
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* \note
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* \param The module's object
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* \return TI_OK on success or TI_NOK on failure
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* \sa busDrv_Create
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*/
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TI_STATUS busDrv_Destroy (TI_HANDLE hBusDrv)
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{
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TBusDrvObj *pBusDrv = (TBusDrvObj*)hBusDrv;
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if (pBusDrv)
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{
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wSdioAdapt_Close(pBusDrv->hWsdio);
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os_memoryFree (pBusDrv->hOs, pBusDrv, sizeof(TBusDrvObj));
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}
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return TI_OK;
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}
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/**
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* \fn busDrv_Init
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* \brief Init bus driver
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*
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* Init module parameters.
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* \note
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* \param hBusDrv - The module's handle
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* \param hReport - report module handle
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* \return void
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* \sa
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*/
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void busDrv_Init (TI_HANDLE hBusDrv, TI_HANDLE hReport)
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{
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TBusDrvObj *pBusDrv = (TBusDrvObj*) hBusDrv;
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pBusDrv->hReport = hReport;
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}
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/**
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* \fn busDrv_ConnectBus
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* \brief Configure bus driver
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*
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* Called by TxnQ.
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* Configure the bus driver with its connection configuration (such as baud-rate, bus width etc)
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* and establish the physical connection.
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* Done once upon init (and not per functional driver startup).
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*
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* \note
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* \param hBusDrv - The module's object
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* \param pBusDrvCfg - A union used for per-bus specific configuration.
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* \param fCbFunc - CB function for Async transaction completion (after all txn parts are completed).
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* \param hCbArg - The CB function handle
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* \return TI_OK / TI_NOK
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* \sa
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*/
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TI_STATUS busDrv_ConnectBus (TI_HANDLE hBusDrv,
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TBusDrvCfg *pBusDrvCfg,
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TBusDrvTxnDoneCb fCbFunc,
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TI_HANDLE hCbArg,
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TBusDrvTxnDoneCb fConnectCbFunc)
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{
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TBusDrvObj *pBusDrv = (TBusDrvObj*)hBusDrv;
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int iStatus;
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/* Save the parameters (TxnQ callback for TxnDone events, and block-size) */
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pBusDrv->fTxnDoneCb = fCbFunc;
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pBusDrv->hCbHandle = hCbArg;
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pBusDrv->uBlkSizeShift = pBusDrvCfg->tSdioCfg.uBlkSizeShift;
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pBusDrv->uBlkSize = 1 << pBusDrv->uBlkSizeShift;
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pBusDrv->uBlkSizeMask = pBusDrv->uBlkSize - 1;
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/* This should cover stop send Txn parts in recovery */
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pBusDrv->uCurrTxnPartsCount = 0;
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pBusDrv->uCurrTxnPartsNum = 0;
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iStatus = wsdioAdapt_ConnectBus (pBusDrv->hWsdio,
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/*pBusDrv->hWsdiobusDrv_TxnDoneCb,*/
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(TAny*)busDrv_TxnDoneCb,
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hBusDrv,
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pBusDrv->uBlkSizeShift,
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0);
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/* Configure the SDIO driver parameters and handle SDIO enumeration */
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// iStatus = sdioAdapt_ConnectBus (busDrv_TxnDoneCb, hBusDrv, pBusDrv->uBlkSizeShift);
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if (iStatus == 0)
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{
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return TI_OK;
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}
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else
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{
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TRACE2(pBusDrv->hReport, REPORT_SEVERITY_ERROR, ": Status = 0x%x, BlkSize = %d\n", iStatus, pBusDrv->uBlkSize);
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return TI_NOK;
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}
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}
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/**
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* \fn busDrv_DisconnectBus
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* \brief Disconnect SDIO driver
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*
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* Called by TxnQ. Disconnect the SDIO driver.
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*
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* \note
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* \param hBusDrv - The module's object
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* \return TI_OK / TI_NOK
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* \sa
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*/
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TI_STATUS busDrv_DisconnectBus (TI_HANDLE hBusDrv)
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{
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TBusDrvObj *pBusDrv = (TBusDrvObj*)hBusDrv;
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TRACE0(pBusDrv->hReport, REPORT_SEVERITY_INFORMATION, "\n");
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/* Disconnect SDIO driver */
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return wsdioAdapt_DisconnectBus (pBusDrv->hWsdio);
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}
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/**
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* \fn busDrv_Transact
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* \brief Process transaction
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*
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* Called by the TxnQ module to initiate a new transaction.
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* Prepare the transaction parts (lower layer single transactions),
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* and send them one by one to the lower layer.
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*
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* \note It's assumed that this function is called only when idle (i.e. previous Txn is done).
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* \param hBusDrv - The module's object
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* \param pTxn - The transaction object
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* \return COMPLETE if Txn completed in this context, PENDING if not, ERROR if failed
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* \sa busDrv_PrepareTxnParts, busDrv_SendTxnParts
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*/
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ETxnStatus busDrv_Transact (TI_HANDLE hBusDrv, TTxnStruct *pTxn)
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{
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TBusDrvObj *pBusDrv = (TBusDrvObj*)hBusDrv;
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pBusDrv->pCurrTxn = pTxn;
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pBusDrv->uCurrTxnPartsCount = 0;
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pBusDrv->eCurrTxnStatus = TXN_STATUS_COMPLETE; /* The Txn is Sync as long as it continues in this context */
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/* Prepare the transaction parts in a table. */
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busDrv_PrepareTxnParts (pBusDrv, pTxn);
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/* Send the prepared transaction parts. */
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busDrv_SendTxnParts (pBusDrv);
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TRACE1(pBusDrv->hReport, REPORT_SEVERITY_INFORMATION, ": Status = %d\n", pBusDrv->eCurrTxnStatus);
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/* return transaction status - COMPLETE, PENDING or ERROR */
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return pBusDrv->eCurrTxnStatus;
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}
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/**
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* \fn busDrv_PrepareTxnParts
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* \brief Prepare write or read transaction parts
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*
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* Called by busDrv_Transact().
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* Prepares the actual sequence of SDIO bus transactions in a table.
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*
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* \note
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* \param pBusDrv - The module's object
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* \param pTxn - The transaction object
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* \return void
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* \sa busDrv_Transact, busDrv_SendTxnParts,
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*/
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static void busDrv_PrepareTxnParts (TBusDrvObj *pBusDrv, TTxnStruct *pTxn)
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{
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TI_UINT32 uBufNum;
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TI_UINT32 uPartNum = 0;
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TI_UINT32 uRemainderLen;
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TI_UINT32 uCurrHwAddr = pTxn->uHwAddr;
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TI_BOOL bFixedHwAddr = TXN_PARAM_GET_FIXED_ADDR(pTxn);
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#ifndef USE_BLOCK_MODE
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TI_UINT32 uLen;
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#endif
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/* For all occupied buffers in current transaction do */
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for (uBufNum = 0; uBufNum < MAX_XFER_BUFS; uBufNum++)
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{
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/* If no more buffers, exit the for loop */
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if (pTxn->aLen[uBufNum] == 0)
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{
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break;
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}
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/* If current buffer has a remainder, prepare its transaction part */
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uRemainderLen = pTxn->aLen[uBufNum] & pBusDrv->uBlkSizeMask;
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if (uRemainderLen > 0)
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{
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pBusDrv->aTxnParts[uPartNum].bBlkMode = TI_FALSE;
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pBusDrv->aTxnParts[uPartNum].uLength = uRemainderLen;
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pBusDrv->aTxnParts[uPartNum].uHwAddr = uCurrHwAddr;
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pBusDrv->aTxnParts[uPartNum].pHostAddr = (void *)(pTxn->aBuf[uBufNum]);
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pBusDrv->aTxnParts[uPartNum].bMore = TI_TRUE;
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/* If not fixed HW address, increment it by this part's size */
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if (!bFixedHwAddr)
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{
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uCurrHwAddr += uRemainderLen;
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}
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uPartNum++;
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}
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#ifdef USE_BLOCK_MODE /* Block Mode */
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/* If current buffer has full SDIO blocks, prepare a block-mode transaction part */
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if (pTxn->aLen[uBufNum] >= pBusDrv->uBlkSize)
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{
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pBusDrv->aTxnParts[uPartNum].bBlkMode = TI_TRUE;
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pBusDrv->aTxnParts[uPartNum].uLength = pTxn->aLen[uBufNum] - uRemainderLen;
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pBusDrv->aTxnParts[uPartNum].uHwAddr = uCurrHwAddr;
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pBusDrv->aTxnParts[uPartNum].pHostAddr = (void *)(pTxn->aBuf[uBufNum] + uRemainderLen);
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387 |
pBusDrv->aTxnParts[uPartNum].bMore = TI_TRUE;
|
|
388 |
|
|
389 |
/* If not fixed HW address, increment it by this part's size */
|
|
390 |
if (!bFixedHwAddr)
|
|
391 |
{
|
|
392 |
uCurrHwAddr += pTxn->aLen[uBufNum] - uRemainderLen;
|
|
393 |
}
|
|
394 |
|
|
395 |
uPartNum++;
|
|
396 |
}
|
|
397 |
|
|
398 |
#else
|
|
399 |
|
|
400 |
/* Split to blocks of block mode size only (512 bytes) */
|
|
401 |
for (uLen = uRemainderLen; uLen < pTxn->aLen[uBufNum]; uLen += pBusDrv->uBlkSize)
|
|
402 |
{
|
|
403 |
pBusDrv->aTxnParts[uPartNum].bBlkMode = TI_FALSE;
|
|
404 |
pBusDrv->aTxnParts[uPartNum].uLength = pBusDrv->uBlkSize;
|
|
405 |
pBusDrv->aTxnParts[uPartNum].uHwAddr = uCurrHwAddr;
|
|
406 |
pBusDrv->aTxnParts[uPartNum].pHostAddr = (void *)(pTxn->aBuf[uBufNum] + uLen);
|
|
407 |
pBusDrv->aTxnParts[uPartNum].bMore = TI_TRUE;
|
|
408 |
|
|
409 |
/* If not fixed HW address, increment it by this part's size */
|
|
410 |
if (!bFixedHwAddr)
|
|
411 |
{
|
|
412 |
uCurrHwAddr += pBusDrv->uBlkSize;
|
|
413 |
}
|
|
414 |
|
|
415 |
uPartNum++;
|
|
416 |
}
|
|
417 |
|
|
418 |
#endif
|
|
419 |
|
|
420 |
}
|
|
421 |
|
|
422 |
/* Set last More flag as specified for the whole Txn */
|
|
423 |
pBusDrv->aTxnParts[uPartNum - 1].bMore = TXN_PARAM_GET_MORE(pTxn);
|
|
424 |
pBusDrv->uCurrTxnPartsNum = uPartNum;
|
|
425 |
}
|
|
426 |
|
|
427 |
|
|
428 |
/**
|
|
429 |
* \fn busDrv_SendTxnParts
|
|
430 |
* \brief Send prepared transaction parts
|
|
431 |
*
|
|
432 |
* Called first by busDrv_Transact(), and also from TxnDone CB after Async completion.
|
|
433 |
* Sends the prepared transaction parts in a loop.
|
|
434 |
* If a transaction part is Async, the loop continues later in the TxnDone ISR context.
|
|
435 |
* When all parts are done, the upper layer TxnDone CB is called.
|
|
436 |
*
|
|
437 |
* \note
|
|
438 |
* \param pBusDrv - The module's object
|
|
439 |
* \return void
|
|
440 |
* \sa busDrv_Transact, busDrv_PrepareTxnParts
|
|
441 |
*/
|
|
442 |
static void busDrv_SendTxnParts (TBusDrvObj *pBusDrv)
|
|
443 |
{
|
|
444 |
ETxnStatus eStatus;
|
|
445 |
TTxnPart *pTxnPart;
|
|
446 |
|
|
447 |
/* While there are transaction parts to send */
|
|
448 |
while (pBusDrv->uCurrTxnPartsCount < pBusDrv->uCurrTxnPartsNum)
|
|
449 |
{
|
|
450 |
pTxnPart = &(pBusDrv->aTxnParts[pBusDrv->uCurrTxnPartsCount]);
|
|
451 |
|
|
452 |
/* If single step, send ELP byte */
|
|
453 |
if (TXN_PARAM_GET_SINGLE_STEP(pBusDrv->pCurrTxn))
|
|
454 |
{
|
|
455 |
/* Overwrite the function id with function 0 - for ELP register !!!! */
|
|
456 |
eStatus = wsdioAdapt_TransactBytes (pBusDrv->hWsdio,
|
|
457 |
TXN_FUNC_ID_CTRL,
|
|
458 |
pTxnPart->uHwAddr,
|
|
459 |
pTxnPart->pHostAddr,
|
|
460 |
pTxnPart->uLength,
|
|
461 |
TXN_PARAM_GET_DIRECTION(pBusDrv->pCurrTxn),
|
|
462 |
pTxnPart->bMore);
|
|
463 |
}
|
|
464 |
else
|
|
465 |
{
|
|
466 |
eStatus = wsdioAdapt_Transact (pBusDrv->hWsdio,
|
|
467 |
TXN_PARAM_GET_FUNC_ID(pBusDrv->pCurrTxn),
|
|
468 |
pTxnPart->uHwAddr,
|
|
469 |
pTxnPart->pHostAddr,
|
|
470 |
pTxnPart->uLength,
|
|
471 |
TXN_PARAM_GET_DIRECTION(pBusDrv->pCurrTxn),
|
|
472 |
pTxnPart->bBlkMode,
|
|
473 |
((TXN_PARAM_GET_FIXED_ADDR(pBusDrv->pCurrTxn)==1)?0:1),
|
|
474 |
pTxnPart->bMore);
|
|
475 |
}
|
|
476 |
|
|
477 |
TRACE7(pBusDrv->hReport, REPORT_SEVERITY_INFORMATION, ": PartNum = %d, SingleStep = %d, Direction = %d, HwAddr = 0x%x, HostAddr = 0x%x, Length = %d, BlkMode = %d\n", pBusDrv->uCurrTxnPartsCount, TXN_PARAM_GET_SINGLE_STEP(pBusDrv->pCurrTxn), TXN_PARAM_GET_DIRECTION(pBusDrv->pCurrTxn), pTxnPart->uHwAddr, pTxnPart->pHostAddr, pTxnPart->uLength, pTxnPart->bBlkMode);
|
|
478 |
|
|
479 |
/* Increment transaction parts counter */
|
|
480 |
pBusDrv->uCurrTxnPartsCount++;
|
|
481 |
|
|
482 |
/* If transaction is not fully Sync, continue it in next TxnDone interrupt */
|
|
483 |
if (eStatus == TXN_STATUS_PENDING)
|
|
484 |
{
|
|
485 |
pBusDrv->eCurrTxnStatus = TXN_STATUS_PENDING;
|
|
486 |
return;
|
|
487 |
}
|
|
488 |
|
|
489 |
/* If error, set error in Txn struct, call TxnDone CB if not fully sync, and exit */
|
|
490 |
if (eStatus == TXN_STATUS_ERROR)
|
|
491 |
{
|
|
492 |
TXN_PARAM_SET_STATUS(pBusDrv->pCurrTxn, TXN_PARAM_STATUS_ERROR);
|
|
493 |
if (pBusDrv->eCurrTxnStatus == TXN_STATUS_PENDING)
|
|
494 |
{
|
|
495 |
pBusDrv->fTxnDoneCb (pBusDrv->hCbHandle, pBusDrv->pCurrTxn);
|
|
496 |
}
|
|
497 |
return;
|
|
498 |
}
|
|
499 |
}
|
|
500 |
|
|
501 |
/* If we got here we sent all buffers and we don't pend transaction end */
|
|
502 |
TRACE1(pBusDrv->hReport, REPORT_SEVERITY_INFORMATION, ": Txn finished successfully, Status = %d\n", pBusDrv->eCurrTxnStatus);
|
|
503 |
|
|
504 |
/* Set status OK in Txn struct, and call TxnDone CB if not fully sync */
|
|
505 |
TXN_PARAM_SET_STATUS(pBusDrv->pCurrTxn, TXN_PARAM_STATUS_OK);
|
|
506 |
if (pBusDrv->eCurrTxnStatus == TXN_STATUS_PENDING)
|
|
507 |
{
|
|
508 |
pBusDrv->fTxnDoneCb (pBusDrv->hCbHandle, pBusDrv->pCurrTxn);
|
|
509 |
}
|
|
510 |
}
|
|
511 |
|
|
512 |
|
|
513 |
/**
|
|
514 |
* \fn busDrv_TxnDoneCb
|
|
515 |
* \brief Continue async transaction processing (CB)
|
|
516 |
*
|
|
517 |
* Called back by the lower (BSP) bus-driver upon Async transaction completion (TxnDone ISR).
|
|
518 |
* Call busDrv_SendTxnParts to continue sending the remained transaction parts.
|
|
519 |
*
|
|
520 |
* \note
|
|
521 |
* \param hBusDrv - The module's object
|
|
522 |
* \param status - The last transaction result - 0 = OK, else Error
|
|
523 |
* \return void
|
|
524 |
* \sa busDrv_SendTxnParts
|
|
525 |
*/
|
|
526 |
static void busDrv_TxnDoneCb (TI_HANDLE hBusDrv, int iStatus)
|
|
527 |
{
|
|
528 |
TBusDrvObj *pBusDrv = (TBusDrvObj*)hBusDrv;
|
|
529 |
|
|
530 |
/* If last transaction part failed, set error in Txn struct, call TxnDone CB and exit. */
|
|
531 |
if (iStatus != 0)
|
|
532 |
{
|
|
533 |
TRACE1(pBusDrv->hReport, REPORT_SEVERITY_ERROR, ": Status = 0x%x\n", iStatus);
|
|
534 |
|
|
535 |
TXN_PARAM_SET_STATUS(pBusDrv->pCurrTxn, TXN_PARAM_STATUS_ERROR);
|
|
536 |
pBusDrv->fTxnDoneCb (pBusDrv->hCbHandle, pBusDrv->pCurrTxn);
|
|
537 |
return;
|
|
538 |
}
|
|
539 |
|
|
540 |
TRACE0(pBusDrv->hReport, REPORT_SEVERITY_INFORMATION, "\n");
|
|
541 |
|
|
542 |
/* Continue sending the remained transaction parts. */
|
|
543 |
busDrv_SendTxnParts (pBusDrv);
|
|
544 |
}
|
|
545 |
|
|
546 |
|
|
547 |
|