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307 lines
8.6 KiB
C
307 lines
8.6 KiB
C
/**
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* @file IxNpeMhSend.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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* Send 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 "IxNpeMhMacros_p.h"
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#include "IxNpeMhConfig_p.h"
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#include "IxNpeMhSend_p.h"
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#include "IxNpeMhSolicitedCbMgr_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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* @def IX_NPEMH_INFIFO_RETRY_DELAY_US
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*
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* @brief Amount of time (uSecs) to delay between retries
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* while inFIFO is Full when attempting to send a message
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*/
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#define IX_NPEMH_INFIFO_RETRY_DELAY_US (1)
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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 IxNpeMhSendStats
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*
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* @brief This structure is used to maintain statistics for the Send
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* module.
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*/
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typedef struct
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{
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UINT32 sends; /**< send invocations */
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UINT32 sendWithResponses; /**< send with response invocations */
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UINT32 queueFulls; /**< fifo queue full occurrences */
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UINT32 queueFullRetries; /**< fifo queue full retry occurrences */
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UINT32 maxQueueFullRetries; /**< max fifo queue full retries */
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UINT32 callbackFulls; /**< callback list full occurrences */
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} IxNpeMhSendStats;
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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 IxNpeMhSendStats ixNpeMhSendStats[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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BOOL ixNpeMhSendInFifoIsFull(
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IxNpeMhNpeId npeId,
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UINT32 maxSendRetries);
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/*
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* Function definition: ixNpeMhSendInFifoIsFull
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*/
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PRIVATE
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BOOL ixNpeMhSendInFifoIsFull(
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IxNpeMhNpeId npeId,
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UINT32 maxSendRetries)
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{
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BOOL isFull = FALSE;
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UINT32 numRetries = 0;
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/* check the NPE's inFIFO */
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isFull = ixNpeMhConfigInFifoIsFull (npeId);
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/* we retry a few times, just to give the NPE a chance to read from */
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/* the FIFO if the FIFO is currently full */
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while (isFull && (numRetries++ < maxSendRetries))
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{
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if (numRetries >= IX_NPEMH_SEND_RETRIES_DEFAULT)
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{
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/* Delay here for as short a time as possible (1 us). */
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/* Adding a delay here should ensure we are not hogging */
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/* the AHB bus while we are retrying */
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ixOsalBusySleep (IX_NPEMH_INFIFO_RETRY_DELAY_US);
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}
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/* re-check the NPE's inFIFO */
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isFull = ixNpeMhConfigInFifoIsFull (npeId);
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/* update statistical info */
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ixNpeMhSendStats[npeId].queueFullRetries++;
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}
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/* record the highest number of retries that occurred */
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if (ixNpeMhSendStats[npeId].maxQueueFullRetries < numRetries)
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{
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ixNpeMhSendStats[npeId].maxQueueFullRetries = numRetries;
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}
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if (isFull)
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{
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/* update statistical info */
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ixNpeMhSendStats[npeId].queueFulls++;
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}
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return isFull;
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}
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/*
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* Function definition: ixNpeMhSendMessageSend
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*/
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IX_STATUS ixNpeMhSendMessageSend (
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IxNpeMhNpeId npeId,
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IxNpeMhMessage message,
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UINT32 maxSendRetries)
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{
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IX_STATUS status;
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IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Entering "
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"ixNpeMhSendMessageSend\n");
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/* update statistical info */
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ixNpeMhSendStats[npeId].sends++;
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/* check if the NPE's inFIFO is full - if so return an error */
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if (ixNpeMhSendInFifoIsFull (npeId, maxSendRetries))
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{
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IX_NPEMH_TRACE0 (IX_NPEMH_WARNING, "NPE's inFIFO is full\n");
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return IX_FAIL;
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}
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/* write the message to the NPE's inFIFO */
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status = ixNpeMhConfigInFifoWrite (npeId, message);
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IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Exiting "
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"ixNpeMhSendMessageSend\n");
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return status;
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}
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/*
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* Function definition: ixNpeMhSendMessageWithResponseSend
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*/
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IX_STATUS ixNpeMhSendMessageWithResponseSend (
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IxNpeMhNpeId npeId,
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IxNpeMhMessage message,
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IxNpeMhMessageId solicitedMessageId,
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IxNpeMhCallback solicitedCallback,
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UINT32 maxSendRetries)
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{
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IX_STATUS status = IX_SUCCESS;
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IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Entering "
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"ixNpeMhSendMessageWithResponseSend\n");
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/* update statistical info */
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ixNpeMhSendStats[npeId].sendWithResponses++;
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/* sr: this sleep will call the receive routine (no interrupts used!!!) */
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ixOsalSleep (IX_NPEMH_INFIFO_RETRY_DELAY_US);
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/* check if the NPE's inFIFO is full - if so return an error */
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if (ixNpeMhSendInFifoIsFull (npeId, maxSendRetries))
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{
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IX_NPEMH_TRACE0 (IX_NPEMH_WARNING, "NPE's inFIFO is full\n");
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return IX_FAIL;
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}
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/* save the solicited callback */
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status = ixNpeMhSolicitedCbMgrCallbackSave (
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npeId, solicitedMessageId, solicitedCallback);
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if (status != IX_SUCCESS)
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{
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IX_NPEMH_ERROR_REPORT ("Failed to save solicited callback\n");
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/* update statistical info */
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ixNpeMhSendStats[npeId].callbackFulls++;
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return status;
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}
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/* write the message to the NPE's inFIFO */
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status = ixNpeMhConfigInFifoWrite (npeId, message);
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IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Exiting "
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"ixNpeMhSendMessageWithResponseSend\n");
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return status;
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}
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/*
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* Function definition: ixNpeMhSendShow
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*/
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void ixNpeMhSendShow (
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IxNpeMhNpeId npeId)
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{
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/* show the message send invocation counter */
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IX_NPEMH_SHOW ("Send invocations",
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ixNpeMhSendStats[npeId].sends);
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/* show the message send with response invocation counter */
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IX_NPEMH_SHOW ("Send with response invocations",
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ixNpeMhSendStats[npeId].sendWithResponses);
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/* show the fifo queue full occurrence counter */
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IX_NPEMH_SHOW ("Fifo queue full occurrences",
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ixNpeMhSendStats[npeId].queueFulls);
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/* show the fifo queue full retry occurrence counter */
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IX_NPEMH_SHOW ("Fifo queue full retry occurrences",
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ixNpeMhSendStats[npeId].queueFullRetries);
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/* show the fifo queue full maximum retries counter */
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IX_NPEMH_SHOW ("Maximum fifo queue full retries",
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ixNpeMhSendStats[npeId].maxQueueFullRetries);
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/* show the callback list full occurrence counter */
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IX_NPEMH_SHOW ("Solicited callback list full occurrences",
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ixNpeMhSendStats[npeId].callbackFulls);
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}
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/*
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* Function definition: ixNpeMhSendShowReset
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*/
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void ixNpeMhSendShowReset (
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IxNpeMhNpeId npeId)
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{
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/* reset the message send invocation counter */
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ixNpeMhSendStats[npeId].sends = 0;
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/* reset the message send with response invocation counter */
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ixNpeMhSendStats[npeId].sendWithResponses = 0;
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/* reset the fifo queue full occurrence counter */
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ixNpeMhSendStats[npeId].queueFulls = 0;
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/* reset the fifo queue full retry occurrence counter */
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ixNpeMhSendStats[npeId].queueFullRetries = 0;
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/* reset the max fifo queue full retries counter */
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ixNpeMhSendStats[npeId].maxQueueFullRetries = 0;
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/* reset the callback list full occurrence counter */
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ixNpeMhSendStats[npeId].callbackFulls = 0;
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}
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