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320 lines
9.4 KiB
C
320 lines
9.4 KiB
C
/**
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* @file IxNpeMhReceive.c
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*
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* @author Intel Corporation
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* @date 18 Jan 2002
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*
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* @brief This file contains the implementation of the private API for the
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* Receive module.
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*
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*
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* @par
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* IXP400 SW Release version 2.0
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*
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* -- Copyright Notice --
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*
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* @par
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* Copyright 2001-2005, Intel Corporation.
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* All rights reserved.
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*
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* @par
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* @par
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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 OWNER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @par
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* -- End of Copyright Notice --
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*/
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/*
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* Put the system defined include files required.
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*/
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/*
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* Put the user defined include files required.
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*/
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#include "IxOsal.h"
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#include "IxNpeMhMacros_p.h"
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#include "IxNpeMhConfig_p.h"
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#include "IxNpeMhReceive_p.h"
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#include "IxNpeMhSolicitedCbMgr_p.h"
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#include "IxNpeMhUnsolicitedCbMgr_p.h"
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/*
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* #defines and macros used in this file.
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*/
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/*
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* Typedefs whose scope is limited to this file.
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*/
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/**
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* @struct IxNpeMhReceiveStats
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*
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* @brief This structure is used to maintain statistics for the Receive
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* module.
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*/
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typedef struct
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{
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UINT32 isrs; /**< receive ISR invocations */
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UINT32 receives; /**< receive messages invocations */
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UINT32 messages; /**< messages received */
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UINT32 solicited; /**< solicited messages received */
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UINT32 unsolicited; /**< unsolicited messages received */
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UINT32 callbacks; /**< callbacks invoked */
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} IxNpeMhReceiveStats;
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/*
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* Variable declarations global to this file only. Externs are followed by
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* static variables.
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*/
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PRIVATE IxNpeMhReceiveStats ixNpeMhReceiveStats[IX_NPEMH_NUM_NPES];
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/*
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* Extern function prototypes.
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*/
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/*
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* Static function prototypes.
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*/
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PRIVATE
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void ixNpeMhReceiveIsr (int npeId);
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PRIVATE
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void ixNpeMhReceiveIsr (int npeId)
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{
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int lockKey;
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IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Entering "
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"ixNpeMhReceiveIsr\n");
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lockKey = ixOsalIrqLock ();
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/* invoke the message receive routine to get messages from the NPE */
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ixNpeMhReceiveMessagesReceive (npeId);
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/* update statistical info */
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ixNpeMhReceiveStats[npeId].isrs++;
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ixOsalIrqUnlock (lockKey);
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IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Exiting "
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"ixNpeMhReceiveIsr\n");
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}
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/*
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* Function definition: ixNpeMhReceiveInitialize
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*/
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void ixNpeMhReceiveInitialize (void)
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{
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IxNpeMhNpeId npeId = 0;
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IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Entering "
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"ixNpeMhReceiveInitialize\n");
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/* for each NPE ... */
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for (npeId = 0; npeId < IX_NPEMH_NUM_NPES; npeId++)
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{
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/* register our internal ISR for the NPE to handle "outFIFO not */
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/* empty" interrupts */
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ixNpeMhConfigIsrRegister (npeId, ixNpeMhReceiveIsr);
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}
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IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Exiting "
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"ixNpeMhReceiveInitialize\n");
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}
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/*
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* Function definition: ixNpeMhReceiveMessagesReceive
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*/
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IX_STATUS ixNpeMhReceiveMessagesReceive (
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IxNpeMhNpeId npeId)
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{
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IxNpeMhMessage message = { { 0, 0 } };
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IxNpeMhMessageId messageId = 0;
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IxNpeMhCallback callback = NULL;
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IX_STATUS status;
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IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Entering "
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"ixNpeMhReceiveMessagesReceive\n");
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/* update statistical info */
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ixNpeMhReceiveStats[npeId].receives++;
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/* while the NPE has messages in its outFIFO */
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while (!ixNpeMhConfigOutFifoIsEmpty (npeId))
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{
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/* read a message from the NPE's outFIFO */
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status = ixNpeMhConfigOutFifoRead (npeId, &message);
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if (IX_SUCCESS != status)
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{
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return status;
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}
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/* get the ID of the message */
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messageId = ixNpeMhConfigMessageIdGet (message);
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IX_NPEMH_TRACE2 (IX_NPEMH_DEBUG,
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"Received message from NPE %d with ID 0x%02X\n",
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npeId, messageId);
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/* update statistical info */
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ixNpeMhReceiveStats[npeId].messages++;
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/* try to find a matching unsolicited callback for this message. */
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/* we assume the message is unsolicited. only if there is no */
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/* unsolicited callback for this message type do we assume the */
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/* message is solicited. it is much faster to check for an */
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/* unsolicited callback, so doing this check first should result */
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/* in better performance. */
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ixNpeMhUnsolicitedCbMgrCallbackRetrieve (
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npeId, messageId, &callback);
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if (callback != NULL)
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{
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IX_NPEMH_TRACE0 (IX_NPEMH_DEBUG,
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"Found matching unsolicited callback\n");
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/* update statistical info */
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ixNpeMhReceiveStats[npeId].unsolicited++;
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}
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/* if no unsolicited callback was found try to find a matching */
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/* solicited callback for this message */
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if (callback == NULL)
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{
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ixNpeMhSolicitedCbMgrCallbackRetrieve (
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npeId, messageId, &callback);
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if (callback != NULL)
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{
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IX_NPEMH_TRACE0 (IX_NPEMH_DEBUG,
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"Found matching solicited callback\n");
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/* update statistical info */
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ixNpeMhReceiveStats[npeId].solicited++;
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}
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}
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/* if a callback (either unsolicited or solicited) was found */
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if (callback != NULL)
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{
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/* invoke the callback to pass the message back to the client */
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callback (npeId, message);
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/* update statistical info */
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ixNpeMhReceiveStats[npeId].callbacks++;
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}
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else /* no callback (neither unsolicited nor solicited) was found */
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{
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IX_NPEMH_TRACE2 (IX_NPEMH_WARNING,
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"No matching callback for NPE %d"
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" and ID 0x%02X, discarding message\n",
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npeId, messageId);
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/* the message will be discarded. this is normal behaviour */
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/* if the client passes a NULL solicited callback when */
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/* sending a message. this indicates that the client is not */
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/* interested in receiving the response. alternatively a */
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/* NULL callback here may signify an unsolicited message */
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/* with no appropriate registered callback. */
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}
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}
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IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Exiting "
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"ixNpeMhReceiveMessagesReceive\n");
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return IX_SUCCESS;
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}
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/*
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* Function definition: ixNpeMhReceiveShow
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*/
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void ixNpeMhReceiveShow (
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IxNpeMhNpeId npeId)
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{
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/* show the ISR invocation counter */
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IX_NPEMH_SHOW ("Receive ISR invocations",
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ixNpeMhReceiveStats[npeId].isrs);
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/* show the receive message invocation counter */
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IX_NPEMH_SHOW ("Receive messages invocations",
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ixNpeMhReceiveStats[npeId].receives);
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/* show the message received counter */
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IX_NPEMH_SHOW ("Messages received",
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ixNpeMhReceiveStats[npeId].messages);
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/* show the solicited message counter */
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IX_NPEMH_SHOW ("Solicited messages received",
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ixNpeMhReceiveStats[npeId].solicited);
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/* show the unsolicited message counter */
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IX_NPEMH_SHOW ("Unsolicited messages received",
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ixNpeMhReceiveStats[npeId].unsolicited);
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/* show the callback invoked counter */
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IX_NPEMH_SHOW ("Callbacks invoked",
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ixNpeMhReceiveStats[npeId].callbacks);
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/* show the message discarded counter */
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IX_NPEMH_SHOW ("Received messages discarded",
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(ixNpeMhReceiveStats[npeId].messages -
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ixNpeMhReceiveStats[npeId].callbacks));
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}
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/*
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* Function definition: ixNpeMhReceiveShowReset
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*/
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void ixNpeMhReceiveShowReset (
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IxNpeMhNpeId npeId)
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{
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/* reset the ISR invocation counter */
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ixNpeMhReceiveStats[npeId].isrs = 0;
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/* reset the receive message invocation counter */
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ixNpeMhReceiveStats[npeId].receives = 0;
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/* reset the message received counter */
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ixNpeMhReceiveStats[npeId].messages = 0;
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/* reset the solicited message counter */
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ixNpeMhReceiveStats[npeId].solicited = 0;
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/* reset the unsolicited message counter */
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ixNpeMhReceiveStats[npeId].unsolicited = 0;
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/* reset the callback invoked counter */
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ixNpeMhReceiveStats[npeId].callbacks = 0;
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}
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