diff options
author | Daniel Krueger <daniel.krueger@systec-electronic.com> | 2008-12-19 11:41:57 -0800 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-01-06 13:52:36 -0800 |
commit | 9d7164cfdb611c2f864d535ae5794f23db3d84f7 (patch) | |
tree | 046847f7d6432f1f3dc8236f62492503f4c9ebdc /drivers/staging/epl/EplPdou.c | |
parent | 37bcd24b845abbfd85c838ee9ce07c2b254d3a05 (diff) |
Staging: add epl stack
This is the openPOWERLINK network stack from systec electronic.
It's a bit messed up as there is a driver mixed into the
middle of it, lots of work needs to be done to unwind the
different portions to make it sane.
Cc: Daniel Krueger <daniel.krueger@systec-electronic.com>
Cc: Ronald Sieber <Ronald.Sieber@systec-electronic.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/epl/EplPdou.c')
-rw-r--r-- | drivers/staging/epl/EplPdou.c | 608 |
1 files changed, 608 insertions, 0 deletions
diff --git a/drivers/staging/epl/EplPdou.c b/drivers/staging/epl/EplPdou.c new file mode 100644 index 00000000000..289d25ed272 --- /dev/null +++ b/drivers/staging/epl/EplPdou.c @@ -0,0 +1,608 @@ +/**************************************************************************** + + (c) SYSTEC electronic GmbH, D-07973 Greiz, August-Bebel-Str. 29 + www.systec-electronic.com + + Project: openPOWERLINK + + Description: source file for user PDO module + Currently, this module just implements a OD callback function + to check if the PDO configuration is valid. + + License: + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + 3. Neither the name of SYSTEC electronic GmbH nor the names of its + contributors may be used to endorse or promote products derived + from this software without prior written permission. For written + permission, please contact info@systec-electronic.com. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + + Severability Clause: + + If a provision of this License is or becomes illegal, invalid or + unenforceable in any jurisdiction, that shall not affect: + 1. the validity or enforceability in that jurisdiction of any other + provision of this License; or + 2. the validity or enforceability in other jurisdictions of that or + any other provision of this License. + + ------------------------------------------------------------------------- + + $RCSfile: EplPdou.c,v $ + + $Author: D.Krueger $ + + $Revision: 1.5 $ $Date: 2008/10/17 15:32:32 $ + + $State: Exp $ + + Build Environment: + GCC V3.4 + + ------------------------------------------------------------------------- + + Revision History: + + 2006/05/22 d.k.: start of the implementation, version 1.00 + +****************************************************************************/ + +#include "EplInc.h" +//#include "user/EplPdouCal.h" +#include "user/EplObdu.h" +#include "user/EplPdou.h" +#include "EplSdoAc.h" + +#if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOU)) != 0) + +#if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_OBDU)) == 0) && (EPL_OBD_USE_KERNEL == FALSE) +#error "EPL PDOu module needs EPL module OBDU or OBDK!" +#endif + + +/***************************************************************************/ +/* */ +/* */ +/* G L O B A L D E F I N I T I O N S */ +/* */ +/* */ +/***************************************************************************/ + +//--------------------------------------------------------------------------- +// const defines +//--------------------------------------------------------------------------- + +#define EPL_PDOU_OBD_IDX_RX_COMM_PARAM 0x1400 +#define EPL_PDOU_OBD_IDX_RX_MAPP_PARAM 0x1600 +#define EPL_PDOU_OBD_IDX_TX_COMM_PARAM 0x1800 +#define EPL_PDOU_OBD_IDX_TX_MAPP_PARAM 0x1A00 +#define EPL_PDOU_OBD_IDX_MAPP_PARAM 0x0200 +#define EPL_PDOU_OBD_IDX_MASK 0xFF00 +#define EPL_PDOU_PDO_ID_MASK 0x00FF + + +//--------------------------------------------------------------------------- +// local types +//--------------------------------------------------------------------------- + +//--------------------------------------------------------------------------- +// modul globale vars +//--------------------------------------------------------------------------- + +//--------------------------------------------------------------------------- +// local function prototypes +//--------------------------------------------------------------------------- + + +/***************************************************************************/ +/* */ +/* */ +/* C L A S S EplPdou */ +/* */ +/* */ +/***************************************************************************/ +// +// Description: +// +// +/***************************************************************************/ + + +//=========================================================================// +// // +// P R I V A T E D E F I N I T I O N S // +// // +//=========================================================================// + +//--------------------------------------------------------------------------- +// const defines +//--------------------------------------------------------------------------- + +//--------------------------------------------------------------------------- +// local types +//--------------------------------------------------------------------------- + +//--------------------------------------------------------------------------- +// local vars +//--------------------------------------------------------------------------- + + +//--------------------------------------------------------------------------- +// local function prototypes +//--------------------------------------------------------------------------- + +static tEplKernel EplPdouCheckPdoValidity(tEplObdCbParam MEM* pParam_p, unsigned int uiIndex_p); + +static void EplPdouDecodeObjectMapping(QWORD qwObjectMapping_p, + unsigned int* puiIndex_p, + unsigned int* puiSubIndex_p, + unsigned int* puiBitOffset_p, + unsigned int* puiBitSize_p); + +static tEplKernel EplPdouCheckObjectMapping(QWORD qwObjectMapping_p, + tEplObdAccess AccessType_p, + DWORD* pdwAbortCode_p, + unsigned int* puiPdoSize_p); + + + +//=========================================================================// +// // +// P U B L I C F U N C T I O N S // +// // +//=========================================================================// + +//--------------------------------------------------------------------------- +// +// Function: EplPdouAddInstance() +// +// Description: add and initialize new instance of EPL stack +// +// Parameters: none +// +// Returns: tEplKernel = error code +// +// +// State: +// +//--------------------------------------------------------------------------- + +tEplKernel EplPdouAddInstance(void) +{ + + return kEplSuccessful; +} + + +//--------------------------------------------------------------------------- +// +// Function: EplPdouDelInstance() +// +// Description: deletes an instance of EPL stack +// +// Parameters: none +// +// Returns: tEplKernel = error code +// +// +// State: +// +//--------------------------------------------------------------------------- + +tEplKernel EplPdouDelInstance(void) +{ + + return kEplSuccessful; +} + + +//--------------------------------------------------------------------------- +// +// Function: EplPdouCbObdAccess +// +// Description: callback function for OD accesses +// +// Parameters: pParam_p = OBD parameter +// +// Returns: tEplKernel = error code +// +// +// State: +// +//--------------------------------------------------------------------------- + +tEplKernel PUBLIC EplPdouCbObdAccess(tEplObdCbParam MEM* pParam_p) +{ +tEplKernel Ret = kEplSuccessful; +unsigned int uiPdoId; +unsigned int uiIndexType; +tEplObdSize ObdSize; +BYTE bObjectCount; +QWORD qwObjectMapping; +tEplObdAccess AccessType; +BYTE bMappSubindex; +unsigned int uiCurPdoSize; +WORD wMaxPdoSize; +unsigned int uiSubIndex; + + // fetch PDO ID + uiPdoId = pParam_p->m_uiIndex & EPL_PDOU_PDO_ID_MASK; + + // fetch object index type + uiIndexType = pParam_p->m_uiIndex & EPL_PDOU_OBD_IDX_MASK; + + if (pParam_p->m_ObdEvent != kEplObdEvPreWrite) + { // read accesses, post write events etc. are OK + pParam_p->m_dwAbortCode = 0; + goto Exit; + } + + // check index type + switch (uiIndexType) + { + case EPL_PDOU_OBD_IDX_RX_COMM_PARAM: + // RPDO communication parameter accessed + case EPL_PDOU_OBD_IDX_TX_COMM_PARAM: + { // TPDO communication parameter accessed + Ret = EplPdouCheckPdoValidity(pParam_p, + (EPL_PDOU_OBD_IDX_MAPP_PARAM | pParam_p->m_uiIndex)); + if (Ret != kEplSuccessful) + { // PDO is valid or does not exist + goto Exit; + } + + goto Exit; + } + + case EPL_PDOU_OBD_IDX_RX_MAPP_PARAM: + { // RPDO mapping parameter accessed + + AccessType = kEplObdAccWrite; + break; + } + + case EPL_PDOU_OBD_IDX_TX_MAPP_PARAM: + { // TPDO mapping parameter accessed + + AccessType = kEplObdAccRead; + break; + } + + default: + { // this callback function is only for + // PDO mapping and communication parameters + pParam_p->m_dwAbortCode = EPL_SDOAC_GENERAL_ERROR; + goto Exit; + } + } + + // RPDO and TPDO mapping parameter accessed + + if (pParam_p->m_uiSubIndex == 0) + { // object mapping count accessed + + // PDO is enabled or disabled + bObjectCount = *((BYTE*) pParam_p->m_pArg); + + if (bObjectCount == 0) + { // PDO shall be disabled + + // that is always possible + goto Exit; + } + + // PDO shall be enabled + // it should have been disabled for this operation + Ret = EplPdouCheckPdoValidity(pParam_p, pParam_p->m_uiIndex); + if (Ret != kEplSuccessful) + { // PDO is valid or does not exist + goto Exit; + } + + if (AccessType == kEplObdAccWrite) + { + uiSubIndex = 0x04; // PReqActPayloadLimit_U16 + } + else + { + uiSubIndex = 0x05; // PResActPayloadLimit_U16 + } + + // fetch maximum PDO size from Object 1F98h: NMT_CycleTiming_REC + ObdSize = sizeof (wMaxPdoSize); + Ret = EplObduReadEntry(0x1F98, uiSubIndex, &wMaxPdoSize, &ObdSize); + if (Ret != kEplSuccessful) + { // other fatal error occured + pParam_p->m_dwAbortCode = EPL_SDOAC_GENERAL_ERROR; + goto Exit; + } + + // check all objectmappings + for (bMappSubindex = 1; bMappSubindex <= bObjectCount; bMappSubindex++) + { + // read object mapping from OD + ObdSize = sizeof (qwObjectMapping); // QWORD + Ret = EplObduReadEntry(pParam_p->m_uiIndex, + bMappSubindex, &qwObjectMapping, &ObdSize); + if (Ret != kEplSuccessful) + { // other fatal error occured + pParam_p->m_dwAbortCode = EPL_SDOAC_GENERAL_ERROR; + goto Exit; + } + + // check object mapping + Ret = EplPdouCheckObjectMapping(qwObjectMapping, + AccessType, + &pParam_p->m_dwAbortCode, + &uiCurPdoSize); + if (Ret != kEplSuccessful) + { // illegal object mapping + goto Exit; + } + + if (uiCurPdoSize > wMaxPdoSize) + { // mapping exceeds object size + pParam_p->m_dwAbortCode = EPL_SDOAC_GENERAL_ERROR; + Ret = kEplPdoVarNotFound; + } + + + } + + } + else + { // ObjectMapping + Ret = EplPdouCheckPdoValidity(pParam_p, pParam_p->m_uiIndex); + if (Ret != kEplSuccessful) + { // PDO is valid or does not exist + goto Exit; + } + + // check existence of object and validity of object length + + qwObjectMapping = *((QWORD*) pParam_p->m_pArg); + + Ret = EplPdouCheckObjectMapping(qwObjectMapping, + AccessType, + &pParam_p->m_dwAbortCode, + &uiCurPdoSize); + + } + +Exit: + return Ret; +} + + + +//=========================================================================// +// // +// P R I V A T E F U N C T I O N S // +// // +//=========================================================================// + +//--------------------------------------------------------------------------- +// +// Function: EplPdouCheckPdoValidity +// +// Description: check if PDO is valid +// +// Parameters: pParam_p = OBD parameter +// +// Returns: tEplKernel = error code +// +// +// State: +// +//--------------------------------------------------------------------------- + +static tEplKernel EplPdouCheckPdoValidity(tEplObdCbParam MEM* pParam_p, unsigned int uiIndex_p) +{ +tEplKernel Ret = kEplSuccessful; +tEplObdSize ObdSize; +BYTE bObjectCount; + + ObdSize = 1; + // read number of mapped objects from OD; this indicates if the PDO is valid + Ret = EplObduReadEntry(uiIndex_p, 0x00, &bObjectCount, &ObdSize); + if (Ret != kEplSuccessful) + { // other fatal error occured + pParam_p->m_dwAbortCode = EPL_SDOAC_GEN_INTERNAL_INCOMPATIBILITY; + goto Exit; + } + // entry read successfully + if (bObjectCount != 0) + { // PDO in OD is still valid + pParam_p->m_dwAbortCode = EPL_SDOAC_GEN_PARAM_INCOMPATIBILITY; + Ret = kEplPdoNotExist; + goto Exit; + } + +Exit: + return Ret; +} + + +//--------------------------------------------------------------------------- +// +// Function: EplPdouDecodeObjectMapping +// +// Description: decodes the given object mapping entry into index, subindex, +// bit offset and bit size. +// +// Parameters: qwObjectMapping_p = object mapping entry +// puiIndex_p = [OUT] pointer to object index +// puiSubIndex_p = [OUT] pointer to subindex +// puiBitOffset_p = [OUT] pointer to bit offset +// puiBitSize_p = [OUT] pointer to bit size +// +// Returns: (void) +// +// State: +// +//--------------------------------------------------------------------------- + +static void EplPdouDecodeObjectMapping(QWORD qwObjectMapping_p, + unsigned int* puiIndex_p, + unsigned int* puiSubIndex_p, + unsigned int* puiBitOffset_p, + unsigned int* puiBitSize_p) +{ + *puiIndex_p = (unsigned int) + (qwObjectMapping_p & 0x000000000000FFFFLL); + + *puiSubIndex_p = (unsigned int) + ((qwObjectMapping_p & 0x0000000000FF0000LL) >> 16); + + *puiBitOffset_p = (unsigned int) + ((qwObjectMapping_p & 0x0000FFFF00000000LL) >> 32); + + *puiBitSize_p = (unsigned int) + ((qwObjectMapping_p & 0xFFFF000000000000LL) >> 48); + +} + + +//--------------------------------------------------------------------------- +// +// Function: EplPdouCheckObjectMapping +// +// Description: checks the given object mapping entry. +// +// Parameters: qwObjectMapping_p = object mapping entry +// AccessType_p = access type to mapped object: +// write = RPDO and read = TPDO +// puiPdoSize_p = [OUT] pointer to covered PDO size +// (offset + size) in byte; +// 0 if mapping failed +// pdwAbortCode_p = [OUT] pointer to SDO abort code; +// 0 if mapping is possible +// +// Returns: tEplKernel = error code +// +// State: +// +//--------------------------------------------------------------------------- + +static tEplKernel EplPdouCheckObjectMapping(QWORD qwObjectMapping_p, + tEplObdAccess AccessType_p, + DWORD* pdwAbortCode_p, + unsigned int* puiPdoSize_p) +{ +tEplKernel Ret = kEplSuccessful; +tEplObdSize ObdSize; +unsigned int uiIndex; +unsigned int uiSubIndex; +unsigned int uiBitOffset; +unsigned int uiBitSize; +tEplObdAccess AccessType; +BOOL fNumerical; + + if (qwObjectMapping_p == 0) + { // discard zero value + *puiPdoSize_p = 0; + goto Exit; + } + + // decode object mapping + EplPdouDecodeObjectMapping(qwObjectMapping_p, + &uiIndex, + &uiSubIndex, + &uiBitOffset, + &uiBitSize); + + if ((uiBitOffset & 0x7) != 0x0) + { // bit mapping is not supported + *pdwAbortCode_p = EPL_SDOAC_GENERAL_ERROR; + Ret = kEplPdoGranularityMismatch; + goto Exit; + } + + if ((uiBitSize & 0x7) != 0x0) + { // bit mapping is not supported + *pdwAbortCode_p = EPL_SDOAC_GENERAL_ERROR; + Ret = kEplPdoGranularityMismatch; + goto Exit; + } + + // check access type + Ret = EplObduGetAccessType(uiIndex, uiSubIndex, &AccessType); + if (Ret != kEplSuccessful) + { // entry doesn't exist + *pdwAbortCode_p = EPL_SDOAC_OBJECT_NOT_EXIST; + goto Exit; + } + + if ((AccessType & kEplObdAccPdo) == 0) + { // object is not mappable + *pdwAbortCode_p = EPL_SDOAC_OBJECT_NOT_MAPPABLE; + Ret = kEplPdoVarNotFound; + goto Exit; + } + + if ((AccessType & AccessType_p) == 0) + { // object is not writeable (RPDO) or readable (TPDO) respectively + *pdwAbortCode_p = EPL_SDOAC_OBJECT_NOT_MAPPABLE; + Ret = kEplPdoVarNotFound; + goto Exit; + } + + ObdSize = EplObduGetDataSize(uiIndex, uiSubIndex); + if (ObdSize < (uiBitSize >> 3)) + { // object does not exist or has smaller size + *pdwAbortCode_p = EPL_SDOAC_GENERAL_ERROR; + Ret = kEplPdoVarNotFound; + } + + Ret = EplObduIsNumerical(uiIndex, uiSubIndex, &fNumerical); + if (Ret != kEplSuccessful) + { // entry doesn't exist + *pdwAbortCode_p = EPL_SDOAC_OBJECT_NOT_EXIST; + goto Exit; + } + + if ((fNumerical != FALSE) + && ((uiBitSize >> 3) != ObdSize)) + { + // object is numerical, + // therefor size has to fit, but it does not. + *pdwAbortCode_p = EPL_SDOAC_GENERAL_ERROR; + Ret = kEplPdoVarNotFound; + goto Exit; + } + + // calucaled needed PDO size + *puiPdoSize_p = (uiBitOffset >> 3) + (uiBitSize >> 3); + +Exit: + return Ret; +} + + +#endif // #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOU)) != 0) + +// EOF + |