91 lines
3.2 KiB
C
91 lines
3.2 KiB
C
/* K_ChGRpl.c */
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/*
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* Copyright (c) 1997-2015 Wind River Systems, Inc.
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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 are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <microkernel/k_struct.h>
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#include <minik.h>
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#include <kchan.h>
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#include <toolchain.h>
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#include <sections.h>
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#include <misc/__assert.h>
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/*****************************************************************************/
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void K_ChRecvRpl(struct k_args *ReqProc)
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{
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__ASSERT_NO_MSG(0 == ReqProc->Args.ChProc.iNbrPendXfers /* no pending Xfers */
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&&
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NULL == ReqProc->Time.timer /* no pending timer */
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&&
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NULL == ReqProc->Head); /* not in list */
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/* orig packet must be sent back, not ReqProc:
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*/
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{
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struct k_args *ReqOrig = ReqProc->Ctxt.args;
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CHREQ_STATUS ChReqStatus;
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ReqOrig->Comm = CHDEQ_ACK;
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/* determine return value:
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*/
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ChReqStatus = ChReqGetStatus(&(ReqProc->Args.ChProc));
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if (TERM_TMO == ChReqStatus) {
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ReqOrig->Time.rcode = RC_TIME;
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} else if ((TERM_XXX | XFER_IDLE) & ChReqStatus) {
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K_PIPE_OPTION Option = ChxxxGetChOpt(&(ReqProc->Args));
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if (likely(0 == ChReqSizeLeft(&(ReqProc->Args.ChProc)))) {
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/* All data has been transferred */
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ReqOrig->Time.rcode = RC_OK;
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} else if (ChReqSizeXferred(&(ReqProc->Args.ChProc))) {
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/* Some but not all data has been transferred */
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ReqOrig->Time.rcode = (Option == _ALL_N) ?
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RC_INCOMPLETE : RC_OK;
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} else {
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/* No data has been transferred */
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ReqOrig->Time.rcode = (Option == _0_TO_N) ?
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RC_OK : RC_FAIL;
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}
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} else
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/* { unknown (invalid) status } */
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{
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__ASSERT_NO_MSG(1 == 0); /* should not come here */
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}
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ReqOrig->Args.ChAck.iSizeXferred =
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ReqProc->Args.ChProc.iSizeXferred;
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SENDARGS(ReqOrig);
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}
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FREEARGS(ReqProc);
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}
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/*****************************************************************************/
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