diff options
Diffstat (limited to 'drivers/net/npe/IxQMgrDispatcher.c')
| -rw-r--r-- | drivers/net/npe/IxQMgrDispatcher.c | 1320 |
1 files changed, 0 insertions, 1320 deletions
diff --git a/drivers/net/npe/IxQMgrDispatcher.c b/drivers/net/npe/IxQMgrDispatcher.c deleted file mode 100644 index 2baeaaf..0000000 --- a/drivers/net/npe/IxQMgrDispatcher.c +++ /dev/null @@ -1,1320 +0,0 @@ -/** - * @file IxQMgrDispatcher.c - * - * @author Intel Corporation - * @date 20-Dec-2001 - * - * @brief This file contains the implementation of the Dispatcher sub component - * - * - * @par - * IXP400 SW Release version 2.0 - * - * -- Copyright Notice -- - * - * @par - * Copyright 2001-2005, Intel Corporation. - * All rights reserved. - * - * @par - * SPDX-License-Identifier: BSD-3-Clause - * @par - * -- End of Copyright Notice -- -*/ - -/* - * User defined include files. - */ -#include "IxQMgr.h" -#include "IxQMgrAqmIf_p.h" -#include "IxQMgrQCfg_p.h" -#include "IxQMgrDispatcher_p.h" -#include "IxQMgrLog_p.h" -#include "IxQMgrDefines_p.h" -#include "IxFeatureCtrl.h" -#include "IxOsal.h" - - - -/* - * #defines and macros used in this file. - */ - - -/* - * This constant is used to indicate the number of priority levels supported - */ -#define IX_QMGR_NUM_PRIORITY_LEVELS 3 - -/* - * This constant is used to set the size of the array of status words - */ -#define MAX_Q_STATUS_WORDS 4 - -/* - * This macro is used to check if a given priority is valid - */ -#define IX_QMGR_DISPATCHER_PRIORITY_CHECK(priority) \ -(((priority) >= IX_QMGR_Q_PRIORITY_0) && ((priority) <= IX_QMGR_Q_PRIORITY_2)) - -/* - * This macto is used to check that a given interrupt source is valid - */ -#define IX_QMGR_DISPATCHER_SOURCE_ID_CHECK(srcSel) \ -(((srcSel) >= IX_QMGR_Q_SOURCE_ID_E) && ((srcSel) <= IX_QMGR_Q_SOURCE_ID_NOT_F)) - -/* - * Number of times a dummy callback is called before logging a trace - * message - */ -#define LOG_THROTTLE_COUNT 1000000 - -/* Priority tables limits */ -#define IX_QMGR_MIN_LOW_QUE_PRIORITY_TABLE_INDEX (0) -#define IX_QMGR_MID_LOW_QUE_PRIORITY_TABLE_INDEX (16) -#define IX_QMGR_MAX_LOW_QUE_PRIORITY_TABLE_INDEX (31) -#define IX_QMGR_MIN_UPP_QUE_PRIORITY_TABLE_INDEX (32) -#define IX_QMGR_MID_UPP_QUE_PRIORITY_TABLE_INDEX (48) -#define IX_QMGR_MAX_UPP_QUE_PRIORITY_TABLE_INDEX (63) - -/* - * This macro is used to check if a given callback type is valid - */ -#define IX_QMGR_DISPATCHER_CALLBACK_TYPE_CHECK(type) \ - (((type) >= IX_QMGR_TYPE_REALTIME_OTHER) && \ - ((type) <= IX_QMGR_TYPE_REALTIME_SPORADIC)) - -/* - * define max index in lower queue to use in loops - */ -#define IX_QMGR_MAX_LOW_QUE_TABLE_INDEX (31) - -/* - * Typedefs whose scope is limited to this file. - */ - -/* - * Information on a queue needed by the Dispatcher - */ -typedef struct -{ - IxQMgrCallback callback; /* Notification callback */ - IxQMgrCallbackId callbackId; /* Notification callback identifier */ - unsigned dummyCallbackCount; /* Number of times runs of dummy callback */ - IxQMgrPriority priority; /* Dispatch priority */ - unsigned int statusWordOffset; /* Offset to the status word to check */ - UINT32 statusMask; /* Status mask */ - UINT32 statusCheckValue; /* Status check value */ - UINT32 intRegCheckMask; /* Interrupt register check mask */ -} IxQMgrQInfo; - -/* - * Variable declarations global to this file. Externs are followed by - * statics. - */ - -/* - * Flag to keep record of what dispatcher set in featureCtrl when ixQMgrInit() - * is called. This is needed because it is possible that a client might - * change whether the live lock prevention dispatcher is used between - * calls to ixQMgrInit() and ixQMgrDispatcherLoopGet(). - */ -PRIVATE IX_STATUS ixQMgrOrigB0Dispatcher = IX_FEATURE_CTRL_COMPONENT_ENABLED; - -/* - * keep record of Q types - not in IxQMgrQInfo for performance as - * it is only used with ixQMgrDispatcherLoopRunB0LLP() - */ -PRIVATE IxQMgrType ixQMgrQTypes[IX_QMGR_MAX_NUM_QUEUES]; - -/* - * This array contains a list of queue identifiers ordered by priority. The table - * is split logically between queue identifiers 0-31 and 32-63. - */ -static IxQMgrQId priorityTable[IX_QMGR_MAX_NUM_QUEUES]; - -/* - * This flag indicates to the dispatcher that the priority table needs to be rebuilt. - */ -static BOOL rebuildTable = false; - -/* Dispatcher statistics */ -static IxQMgrDispatcherStats dispatcherStats; - -/* Table of queue information */ -static IxQMgrQInfo dispatchQInfo[IX_QMGR_MAX_NUM_QUEUES]; - -/* Masks use to identify the first queues in the priority tables -* when comparing with the interrupt register -*/ -static unsigned int lowPriorityTableFirstHalfMask; -static unsigned int uppPriorityTableFirstHalfMask; - -/* - * Static function prototypes - */ - -/* - * This function is the default callback for all queues - */ -PRIVATE void -dummyCallback (IxQMgrQId qId, - IxQMgrCallbackId cbId); - -PRIVATE void -ixQMgrDispatcherReBuildPriorityTable (void); - -/* - * Function definitions. - */ -void -ixQMgrDispatcherInit (void) -{ - int i; - IxFeatureCtrlProductId productId = 0; - IxFeatureCtrlDeviceId deviceId = 0; - BOOL stickyIntSilicon = true; - - /* Set default priorities */ - for (i=0; i< IX_QMGR_MAX_NUM_QUEUES; i++) - { - dispatchQInfo[i].callback = dummyCallback; - dispatchQInfo[i].callbackId = 0; - dispatchQInfo[i].dummyCallbackCount = 0; - dispatchQInfo[i].priority = IX_QMGR_Q_PRIORITY_2; - dispatchQInfo[i].statusWordOffset = 0; - dispatchQInfo[i].statusCheckValue = 0; - dispatchQInfo[i].statusMask = 0; - /* - * There are two interrupt registers, 32 bits each. One for the lower - * queues(0-31) and one for the upper queues(32-63). Therefore need to - * mod by 32 i.e the min upper queue identifier. - */ - dispatchQInfo[i].intRegCheckMask = (1<<(i%(IX_QMGR_MIN_QUEUPP_QID))); - - /* - * Set the Q types - will only be used with livelock - */ - ixQMgrQTypes[i] = IX_QMGR_TYPE_REALTIME_OTHER; - - /* Reset queue statistics */ - dispatcherStats.queueStats[i].callbackCnt = 0; - dispatcherStats.queueStats[i].priorityChangeCnt = 0; - dispatcherStats.queueStats[i].intNoCallbackCnt = 0; - dispatcherStats.queueStats[i].intLostCallbackCnt = 0; - dispatcherStats.queueStats[i].notificationEnabled = false; - dispatcherStats.queueStats[i].srcSel = 0; - - } - - /* Priority table. Order the table from queue 0 to 63 */ - ixQMgrDispatcherReBuildPriorityTable(); - - /* Reset statistics */ - dispatcherStats.loopRunCnt = 0; - - /* Get the device ID for the underlying silicon */ - deviceId = ixFeatureCtrlDeviceRead(); - - /* Get the product ID for the underlying silicon */ - productId = ixFeatureCtrlProductIdRead(); - - /* - * Check featureCtrl to see if Livelock prevention is required - */ - ixQMgrOrigB0Dispatcher = ixFeatureCtrlSwConfigurationCheck( - IX_FEATURECTRL_ORIGB0_DISPATCHER); - - /* - * Check if the silicon supports the sticky interrupt feature. - * IF (IXP42X AND A0) -> No sticky interrupt feature supported - */ - if ((IX_FEATURE_CTRL_DEVICE_TYPE_IXP42X == - (IX_FEATURE_CTRL_DEVICE_TYPE_MASK & deviceId)) && - (IX_FEATURE_CTRL_SILICON_TYPE_A0 == - (IX_FEATURE_CTRL_SILICON_STEPPING_MASK & productId))) - { - stickyIntSilicon = false; - } - - /* - * IF user wants livelock prev option AND silicon supports sticky interrupt - * feature -> enable the sticky interrupt bit - */ - if ((IX_FEATURE_CTRL_SWCONFIG_DISABLED == ixQMgrOrigB0Dispatcher) && - stickyIntSilicon) - { - ixQMgrStickyInterruptRegEnable(); - } -} - -IX_STATUS -ixQMgrDispatcherPrioritySet (IxQMgrQId qId, - IxQMgrPriority priority) -{ - int ixQMgrLockKey; - - if (!ixQMgrQIsConfigured(qId)) - { - return IX_QMGR_Q_NOT_CONFIGURED; - } - - if (!IX_QMGR_DISPATCHER_PRIORITY_CHECK(priority)) - { - return IX_QMGR_Q_INVALID_PRIORITY; - } - - ixQMgrLockKey = ixOsalIrqLock(); - - /* Change priority */ - dispatchQInfo[qId].priority = priority; - /* Set flag */ - rebuildTable = true; - - ixOsalIrqUnlock(ixQMgrLockKey); - -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.queueStats[qId].priorityChangeCnt++; -#endif - - return IX_SUCCESS; -} - -IX_STATUS -ixQMgrNotificationCallbackSet (IxQMgrQId qId, - IxQMgrCallback callback, - IxQMgrCallbackId callbackId) -{ - if (!ixQMgrQIsConfigured(qId)) - { - return IX_QMGR_Q_NOT_CONFIGURED; - } - - if (NULL == callback) - { - /* Reset to dummy callback */ - dispatchQInfo[qId].callback = dummyCallback; - dispatchQInfo[qId].dummyCallbackCount = 0; - dispatchQInfo[qId].callbackId = 0; - } - else - { - dispatchQInfo[qId].callback = callback; - dispatchQInfo[qId].callbackId = callbackId; - } - - return IX_SUCCESS; -} - -IX_STATUS -ixQMgrNotificationEnable (IxQMgrQId qId, - IxQMgrSourceId srcSel) -{ - IxQMgrQStatus qStatusOnEntry;/* The queue status on entry/exit */ - IxQMgrQStatus qStatusOnExit; /* to this function */ - int ixQMgrLockKey; - -#ifndef NDEBUG - if (!ixQMgrQIsConfigured (qId)) - { - return IX_QMGR_Q_NOT_CONFIGURED; - } - - if ((qId < IX_QMGR_MIN_QUEUPP_QID) && - !IX_QMGR_DISPATCHER_SOURCE_ID_CHECK(srcSel)) - { - /* QId 0-31 source id invalid */ - return IX_QMGR_INVALID_INT_SOURCE_ID; - } - - if ((IX_QMGR_Q_SOURCE_ID_NE != srcSel) && - (qId >= IX_QMGR_MIN_QUEUPP_QID)) - { - /* - * For queues 32-63 the interrupt source is fixed to the Nearly - * Empty status flag and therefore should have a srcSel of NE. - */ - return IX_QMGR_INVALID_INT_SOURCE_ID; - } -#endif - -#ifndef NDEBUG - dispatcherStats.queueStats[qId].notificationEnabled = true; - dispatcherStats.queueStats[qId].srcSel = srcSel; -#endif - - /* Get the current queue status */ - ixQMgrAqmIfQueStatRead (qId, &qStatusOnEntry); - - /* - * Enabling interrupts results in Read-Modify-Write - * so need critical section - */ - - ixQMgrLockKey = ixOsalIrqLock(); - - /* Calculate the checkMask and checkValue for this q */ - ixQMgrAqmIfQStatusCheckValsCalc (qId, - srcSel, - &dispatchQInfo[qId].statusWordOffset, - &dispatchQInfo[qId].statusCheckValue, - &dispatchQInfo[qId].statusMask); - - - /* Set the interrupt source is this queue is in the range 0-31 */ - if (qId < IX_QMGR_MIN_QUEUPP_QID) - { - ixQMgrAqmIfIntSrcSelWrite (qId, srcSel); - } - - /* Enable the interrupt */ - ixQMgrAqmIfQInterruptEnable (qId); - - ixOsalIrqUnlock(ixQMgrLockKey); - - /* Get the current queue status */ - ixQMgrAqmIfQueStatRead (qId, &qStatusOnExit); - - /* If the status has changed return a warning */ - if (qStatusOnEntry != qStatusOnExit) - { - return IX_QMGR_WARNING; - } - - return IX_SUCCESS; -} - - -IX_STATUS -ixQMgrNotificationDisable (IxQMgrQId qId) -{ - int ixQMgrLockKey; - -#ifndef NDEBUG - /* Validate parameters */ - if (!ixQMgrQIsConfigured (qId)) - { - return IX_QMGR_Q_NOT_CONFIGURED; - } -#endif - - /* - * Enabling interrupts results in Read-Modify-Write - * so need critical section - */ -#ifndef NDEBUG - dispatcherStats.queueStats[qId].notificationEnabled = false; -#endif - - ixQMgrLockKey = ixOsalIrqLock(); - - ixQMgrAqmIfQInterruptDisable (qId); - - ixOsalIrqUnlock(ixQMgrLockKey); - - return IX_SUCCESS; -} - -void -ixQMgrStickyInterruptRegEnable(void) -{ - /* Use Aqm If function to set Interrupt Register0 Bit-3 */ - ixQMgrAqmIfIntSrcSelReg0Bit3Set (); -} - -#if !defined __XSCALE__ || defined __linux - -/* Count the number of leading zero bits in a word, - * and return the same value than the CLZ instruction. - * - * word (in) return value (out) - * 0x80000000 0 - * 0x40000000 1 - * ,,, ,,, - * 0x00000002 30 - * 0x00000001 31 - * 0x00000000 32 - * - * The C version of this function is used as a replacement - * for system not providing the equivalent of the CLZ - * assembly language instruction. - * - * Note that this version is big-endian - */ -unsigned int -ixQMgrCountLeadingZeros(UINT32 word) -{ - unsigned int leadingZerosCount = 0; - - if (word == 0) - { - return 32; - } - /* search the first bit set by testing the MSB and shifting the input word */ - while ((word & 0x80000000) == 0) - { - word <<= 1; - leadingZerosCount++; - } - return leadingZerosCount; -} -#endif /* not __XSCALE__ or __linux */ - -void -ixQMgrDispatcherLoopGet (IxQMgrDispatcherFuncPtr *qDispatcherFuncPtr) -{ - IxFeatureCtrlProductId productId = 0; - IxFeatureCtrlDeviceId deviceId = 0; - - /* Get the device ID for the underlying silicon */ - deviceId = ixFeatureCtrlDeviceRead(); - - /* Get the product ID for the underlying silicon */ - productId = ixFeatureCtrlProductIdRead (); - - /* IF (IXP42X AND A0 silicon) -> use ixQMgrDispatcherLoopRunA0 */ - if ((IX_FEATURE_CTRL_DEVICE_TYPE_IXP42X == - (IX_FEATURE_CTRL_DEVICE_TYPE_MASK & deviceId)) && - (IX_FEATURE_CTRL_SILICON_TYPE_A0 == - (IX_FEATURE_CTRL_SILICON_STEPPING_MASK & productId))) - { - /*For IXP42X A0 silicon */ - *qDispatcherFuncPtr = &ixQMgrDispatcherLoopRunA0 ; - } - else /*For IXP42X B0 or IXP46X silicon*/ - { - if (IX_FEATURE_CTRL_SWCONFIG_ENABLED == ixQMgrOrigB0Dispatcher) - { - /* Default for IXP42X B0 and IXP46X silicon */ - *qDispatcherFuncPtr = &ixQMgrDispatcherLoopRunB0; - } - else - { - /* FeatureCtrl indicated that livelock dispatcher be used */ - *qDispatcherFuncPtr = &ixQMgrDispatcherLoopRunB0LLP; - } - } -} - -void -ixQMgrDispatcherLoopRunA0 (IxQMgrDispatchGroup group) -{ - UINT32 intRegVal; /* Interrupt reg val */ - UINT32 intRegValAfterWrite; /* Interrupt reg val after writing back */ - UINT32 intRegCheckMask; /* Mask for checking interrupt bits */ - UINT32 qStatusWordsB4Write[MAX_Q_STATUS_WORDS]; /* Status b4 interrupt write */ - UINT32 qStatusWordsAfterWrite[MAX_Q_STATUS_WORDS]; /* Status after interrupt write */ - IxQMgrQInfo *currDispatchQInfo; - BOOL statusChangeFlag; - - int priorityTableIndex;/* Priority table index */ - int qIndex; /* Current queue being processed */ - int endIndex; /* Index of last queue to process */ - -#ifndef NDEBUG - IX_OSAL_ASSERT((group == IX_QMGR_QUEUPP_GROUP) || - (group == IX_QMGR_QUELOW_GROUP)); -#endif - - /* Read Q status registers before interrupt status read/write */ - ixQMgrAqmIfQStatusRegsRead (group, qStatusWordsB4Write); - - /* Read the interrupt register */ - ixQMgrAqmIfQInterruptRegRead (group, &intRegVal); - - /* No bit set : nothing to process (the reaminder of the algorithm is - * based on the fact that the interrupt register value contains at - * least one bit set - */ - if (intRegVal == 0) - { -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.loopRunCnt++; -#endif - - /* Rebuild the priority table if needed */ - if (rebuildTable) - { - ixQMgrDispatcherReBuildPriorityTable (); - } - - return; - } - - /* Write it back to clear the interrupt */ - ixQMgrAqmIfQInterruptRegWrite (group, intRegVal); - - /* Read Q status registers after interrupt status read/write */ - ixQMgrAqmIfQStatusRegsRead (group, qStatusWordsAfterWrite); - - /* get the first queue Id from the interrupt register value */ - qIndex = (BITS_PER_WORD - 1) - ixQMgrCountLeadingZeros(intRegVal); - - /* check if any change occured during hw register modifications */ - if (IX_QMGR_QUELOW_GROUP == group) - { - statusChangeFlag = - (qStatusWordsB4Write[0] != qStatusWordsAfterWrite[0]) || - (qStatusWordsB4Write[1] != qStatusWordsAfterWrite[1]) || - (qStatusWordsB4Write[2] != qStatusWordsAfterWrite[2]) || - (qStatusWordsB4Write[3] != qStatusWordsAfterWrite[3]); - } - else - { - statusChangeFlag = - (qStatusWordsB4Write[0] != qStatusWordsAfterWrite[0]); - /* Set the queue range based on the queue group to proccess */ - qIndex += IX_QMGR_MIN_QUEUPP_QID; - } - - if (statusChangeFlag == false) - { - /* check if the interrupt register contains - * only 1 bit set (happy day scenario) - */ - currDispatchQInfo = &dispatchQInfo[qIndex]; - if (intRegVal == currDispatchQInfo->intRegCheckMask) - { - /* only 1 queue event triggered a notification * - * Call the callback function for this queue - */ - currDispatchQInfo->callback (qIndex, - currDispatchQInfo->callbackId); -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.queueStats[qIndex].callbackCnt++; -#endif - } - else - { - /* the event is triggered by more than 1 queue, - * the queue search will be starting from the beginning - * or the middle of the priority table - * - * the serach will end when all the bits of the interrupt - * register are cleared. There is no need to maintain - * a seperate value and test it at each iteration. - */ - if (IX_QMGR_QUELOW_GROUP == group) - { - /* check if any bit related to queues in the first - * half of the priority table is set - */ - if (intRegVal & lowPriorityTableFirstHalfMask) - { - priorityTableIndex = IX_QMGR_MIN_LOW_QUE_PRIORITY_TABLE_INDEX; - } - else - { - priorityTableIndex = IX_QMGR_MID_LOW_QUE_PRIORITY_TABLE_INDEX; - } - } - else - { - /* check if any bit related to queues in the first - * half of the priority table is set - */ - if (intRegVal & uppPriorityTableFirstHalfMask) - { - priorityTableIndex = IX_QMGR_MIN_UPP_QUE_PRIORITY_TABLE_INDEX; - } - else - { - priorityTableIndex = IX_QMGR_MID_UPP_QUE_PRIORITY_TABLE_INDEX; - } - } - - /* iterate following the priority table until all the bits - * of the interrupt register are cleared. - */ - do - { - qIndex = priorityTable[priorityTableIndex++]; - currDispatchQInfo = &dispatchQInfo[qIndex]; - intRegCheckMask = currDispatchQInfo->intRegCheckMask; - - /* If this queue caused this interrupt to be raised */ - if (intRegVal & intRegCheckMask) - { - /* Call the callback function for this queue */ - currDispatchQInfo->callback (qIndex, - currDispatchQInfo->callbackId); -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.queueStats[qIndex].callbackCnt++; -#endif - - /* Clear the interrupt register bit */ - intRegVal &= ~intRegCheckMask; - } - } - while(intRegVal); - } - } - else - { - /* A change in queue status occured during the hw interrupt - * register update. To maintain the interrupt consistency, it - * is necessary to iterate through all queues of the queue group. - */ - - /* Read interrupt status again */ - ixQMgrAqmIfQInterruptRegRead (group, &intRegValAfterWrite); - - if (IX_QMGR_QUELOW_GROUP == group) - { - priorityTableIndex = IX_QMGR_MIN_LOW_QUE_PRIORITY_TABLE_INDEX; - endIndex = IX_QMGR_MAX_LOW_QUE_PRIORITY_TABLE_INDEX; - } - else - { - priorityTableIndex = IX_QMGR_MIN_UPP_QUE_PRIORITY_TABLE_INDEX; - endIndex = IX_QMGR_MAX_UPP_QUE_PRIORITY_TABLE_INDEX; - } - - for ( ; priorityTableIndex<=endIndex; priorityTableIndex++) - { - qIndex = priorityTable[priorityTableIndex]; - currDispatchQInfo = &dispatchQInfo[qIndex]; - intRegCheckMask = currDispatchQInfo->intRegCheckMask; - - /* If this queue caused this interrupt to be raised */ - if (intRegVal & intRegCheckMask) - { - /* Call the callback function for this queue */ - currDispatchQInfo->callback (qIndex, - currDispatchQInfo->callbackId); -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.queueStats[qIndex].callbackCnt++; -#endif - - } /* if (intRegVal .. */ - - /* - * If interrupt bit is set in intRegValAfterWrite don't - * proceed as this will be caught in next interrupt - */ - else if ((intRegValAfterWrite & intRegCheckMask) == 0) - { - /* Check if an interrupt was lost for this Q */ - if (ixQMgrAqmIfQStatusCheck(qStatusWordsB4Write, - qStatusWordsAfterWrite, - currDispatchQInfo->statusWordOffset, - currDispatchQInfo->statusCheckValue, - currDispatchQInfo->statusMask)) - { - /* Call the callback function for this queue */ - currDispatchQInfo->callback (qIndex, - dispatchQInfo[qIndex].callbackId); -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.queueStats[qIndex].callbackCnt++; - dispatcherStats.queueStats[qIndex].intLostCallbackCnt++; -#endif - } /* if ixQMgrAqmIfQStatusCheck(.. */ - } /* else if ((intRegValAfterWrite ... */ - } /* for (priorityTableIndex=0 ... */ - } - - /* Rebuild the priority table if needed */ - if (rebuildTable) - { - ixQMgrDispatcherReBuildPriorityTable (); - } - -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.loopRunCnt++; -#endif -} - - - -void -ixQMgrDispatcherLoopRunB0 (IxQMgrDispatchGroup group) -{ - UINT32 intRegVal; /* Interrupt reg val */ - UINT32 intRegCheckMask; /* Mask for checking interrupt bits */ - IxQMgrQInfo *currDispatchQInfo; - - - int priorityTableIndex; /* Priority table index */ - int qIndex; /* Current queue being processed */ - -#ifndef NDEBUG - IX_OSAL_ASSERT((group == IX_QMGR_QUEUPP_GROUP) || - (group == IX_QMGR_QUELOW_GROUP)); - IX_OSAL_ASSERT((group == IX_QMGR_QUEUPP_GROUP) || - (group == IX_QMGR_QUELOW_GROUP)); -#endif - - /* Read the interrupt register */ - ixQMgrAqmIfQInterruptRegRead (group, &intRegVal); - - - /* No queue has interrupt register set */ - if (intRegVal != 0) - { - - /* Write it back to clear the interrupt */ - ixQMgrAqmIfQInterruptRegWrite (group, intRegVal); - - /* get the first queue Id from the interrupt register value */ - qIndex = (BITS_PER_WORD - 1) - ixQMgrCountLeadingZeros(intRegVal); - - if (IX_QMGR_QUEUPP_GROUP == group) - { - /* Set the queue range based on the queue group to proccess */ - qIndex += IX_QMGR_MIN_QUEUPP_QID; - } - - /* check if the interrupt register contains - * only 1 bit set - * For example: - * intRegVal = 0x0010 - * currDispatchQInfo->intRegCheckMask = 0x0010 - * intRegVal == currDispatchQInfo->intRegCheckMask is true. - */ - currDispatchQInfo = &dispatchQInfo[qIndex]; - if (intRegVal == currDispatchQInfo->intRegCheckMask) - { - /* only 1 queue event triggered a notification * - * Call the callback function for this queue - */ - currDispatchQInfo->callback (qIndex, - currDispatchQInfo->callbackId); -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.queueStats[qIndex].callbackCnt++; -#endif - } - else - { - /* the event is triggered by more than 1 queue, - * the queue search will be starting from the beginning - * or the middle of the priority table - * - * the serach will end when all the bits of the interrupt - * register are cleared. There is no need to maintain - * a seperate value and test it at each iteration. - */ - if (IX_QMGR_QUELOW_GROUP == group) - { - /* check if any bit related to queues in the first - * half of the priority table is set - */ - if (intRegVal & lowPriorityTableFirstHalfMask) - { - priorityTableIndex = IX_QMGR_MIN_LOW_QUE_PRIORITY_TABLE_INDEX; - } - else - { - priorityTableIndex = IX_QMGR_MID_LOW_QUE_PRIORITY_TABLE_INDEX; - } - } - else - { - /* check if any bit related to queues in the first - * half of the priority table is set - */ - if (intRegVal & uppPriorityTableFirstHalfMask) - { - priorityTableIndex = IX_QMGR_MIN_UPP_QUE_PRIORITY_TABLE_INDEX; - } - else - { - priorityTableIndex = IX_QMGR_MID_UPP_QUE_PRIORITY_TABLE_INDEX; - } - } - - /* iterate following the priority table until all the bits - * of the interrupt register are cleared. - */ - do - { - qIndex = priorityTable[priorityTableIndex++]; - currDispatchQInfo = &dispatchQInfo[qIndex]; - intRegCheckMask = currDispatchQInfo->intRegCheckMask; - - /* If this queue caused this interrupt to be raised */ - if (intRegVal & intRegCheckMask) - { - /* Call the callback function for this queue */ - currDispatchQInfo->callback (qIndex, - currDispatchQInfo->callbackId); -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.queueStats[qIndex].callbackCnt++; -#endif - - /* Clear the interrupt register bit */ - intRegVal &= ~intRegCheckMask; - } - } - while(intRegVal); - } /*End of intRegVal == currDispatchQInfo->intRegCheckMask */ - } /* End of intRegVal != 0 */ - -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.loopRunCnt++; -#endif - - /* Rebuild the priority table if needed */ - if (rebuildTable) - { - ixQMgrDispatcherReBuildPriorityTable (); - } -} - -void -ixQMgrDispatcherLoopRunB0LLP (IxQMgrDispatchGroup group) -{ - UINT32 intRegVal =0; /* Interrupt reg val */ - UINT32 intRegCheckMask; /* Mask for checking interrupt bits */ - IxQMgrQInfo *currDispatchQInfo; - - int priorityTableIndex; /* Priority table index */ - int qIndex; /* Current queue being processed */ - - UINT32 intRegValCopy = 0; - UINT32 intEnableRegVal = 0; - UINT8 i = 0; - -#ifndef NDEBUG - IX_OSAL_ASSERT((group == IX_QMGR_QUEUPP_GROUP) || - (group == IX_QMGR_QUELOW_GROUP)); -#endif - - /* Read the interrupt register */ - ixQMgrAqmIfQInterruptRegRead (group, &intRegVal); - - /* - * mask any interrupts that are not enabled - */ - ixQMgrAqmIfQInterruptEnableRegRead (group, &intEnableRegVal); - intRegVal &= intEnableRegVal; - - /* No queue has interrupt register set */ - if (intRegVal != 0) - { - if (IX_QMGR_QUELOW_GROUP == group) - { - /* - * As the sticky bit is set, the interrupt register will - * not clear if write back at this point because the condition - * has not been cleared. Take a copy and write back later after - * the condition has been cleared - */ - intRegValCopy = intRegVal; - } - else - { - /* no sticky for upper Q's, so write back now */ - ixQMgrAqmIfQInterruptRegWrite (group, intRegVal); - } - - /* get the first queue Id from the interrupt register value */ - qIndex = (BITS_PER_WORD - 1) - ixQMgrCountLeadingZeros(intRegVal); - - if (IX_QMGR_QUEUPP_GROUP == group) - { - /* Set the queue range based on the queue group to proccess */ - qIndex += IX_QMGR_MIN_QUEUPP_QID; - } - - /* check if the interrupt register contains - * only 1 bit set - * For example: - * intRegVal = 0x0010 - * currDispatchQInfo->intRegCheckMask = 0x0010 - * intRegVal == currDispatchQInfo->intRegCheckMask is true. - */ - currDispatchQInfo = &dispatchQInfo[qIndex]; - if (intRegVal == currDispatchQInfo->intRegCheckMask) - { - - /* - * check if Q type periodic - only lower queues can - * have there type set to periodic - */ - if (IX_QMGR_TYPE_REALTIME_PERIODIC == ixQMgrQTypes[qIndex]) - { - /* - * Disable the notifications on any sporadics - */ - for (i=0; i <= IX_QMGR_MAX_LOW_QUE_TABLE_INDEX; i++) - { - if (IX_QMGR_TYPE_REALTIME_SPORADIC == ixQMgrQTypes[i]) - { - ixQMgrNotificationDisable(i); -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.queueStats[i].disableCount++; -#endif - } - } - } - - currDispatchQInfo->callback (qIndex, - currDispatchQInfo->callbackId); -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.queueStats[qIndex].callbackCnt++; -#endif - } - else - { - /* the event is triggered by more than 1 queue, - * the queue search will be starting from the beginning - * or the middle of the priority table - * - * the serach will end when all the bits of the interrupt - * register are cleared. There is no need to maintain - * a seperate value and test it at each iteration. - */ - if (IX_QMGR_QUELOW_GROUP == group) - { - /* check if any bit related to queues in the first - * half of the priority table is set - */ - if (intRegVal & lowPriorityTableFirstHalfMask) - { - priorityTableIndex = - IX_QMGR_MIN_LOW_QUE_PRIORITY_TABLE_INDEX; - } - else - { - priorityTableIndex = - IX_QMGR_MID_LOW_QUE_PRIORITY_TABLE_INDEX; - } - } - else - { - /* check if any bit related to queues in the first - * half of the priority table is set - */ - if (intRegVal & uppPriorityTableFirstHalfMask) - { - priorityTableIndex = - IX_QMGR_MIN_UPP_QUE_PRIORITY_TABLE_INDEX; - } - else - { - priorityTableIndex = - IX_QMGR_MID_UPP_QUE_PRIORITY_TABLE_INDEX; - } - } - - /* iterate following the priority table until all the bits - * of the interrupt register are cleared. - */ - do - { - qIndex = priorityTable[priorityTableIndex++]; - currDispatchQInfo = &dispatchQInfo[qIndex]; - intRegCheckMask = currDispatchQInfo->intRegCheckMask; - - /* If this queue caused this interrupt to be raised */ - if (intRegVal & intRegCheckMask) - { - /* - * check if Q type periodic - only lower queues can - * have there type set to periodic. There can only be one - * periodic queue, so the sporadics are only disabled once. - */ - if (IX_QMGR_TYPE_REALTIME_PERIODIC == ixQMgrQTypes[qIndex]) - { - /* - * Disable the notifications on any sporadics - */ - for (i=0; i <= IX_QMGR_MAX_LOW_QUE_TABLE_INDEX; i++) - { - if (IX_QMGR_TYPE_REALTIME_SPORADIC == - ixQMgrQTypes[i]) - { - ixQMgrNotificationDisable(i); - /* - * remove from intRegVal as we don't want - * to service any sporadics now - */ - intRegVal &= ~dispatchQInfo[i].intRegCheckMask; -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.queueStats[i].disableCount++; -#endif - } - } - } - - currDispatchQInfo->callback (qIndex, - currDispatchQInfo->callbackId); -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.queueStats[qIndex].callbackCnt++; -#endif - /* Clear the interrupt register bit */ - intRegVal &= ~intRegCheckMask; - } - } - while(intRegVal); - } /*End of intRegVal == currDispatchQInfo->intRegCheckMask */ - } /* End of intRegVal != 0 */ - -#ifndef NDEBUG - /* Update statistics */ - dispatcherStats.loopRunCnt++; -#endif - - if ((intRegValCopy != 0) && (IX_QMGR_QUELOW_GROUP == group)) - { - /* - * lower groups (therefore sticky) AND at least one enabled interrupt - * Write back to clear the interrupt - */ - ixQMgrAqmIfQInterruptRegWrite (IX_QMGR_QUELOW_GROUP, intRegValCopy); - } - - /* Rebuild the priority table if needed */ - if (rebuildTable) - { - ixQMgrDispatcherReBuildPriorityTable (); - } -} - -PRIVATE void -ixQMgrDispatcherReBuildPriorityTable (void) -{ - UINT32 qIndex; - UINT32 priority; - int lowQuePriorityTableIndex = IX_QMGR_MIN_LOW_QUE_PRIORITY_TABLE_INDEX; - int uppQuePriorityTableIndex = IX_QMGR_MIN_UPP_QUE_PRIORITY_TABLE_INDEX; - - /* Reset the rebuild flag */ - rebuildTable = false; - - /* initialize the mak used to identify the queues in the first half - * of the priority table - */ - lowPriorityTableFirstHalfMask = 0; - uppPriorityTableFirstHalfMask = 0; - - /* For each priority level */ - for(priority=0; priority<IX_QMGR_NUM_PRIORITY_LEVELS; priority++) - { - /* Foreach low queue in this priority */ - for(qIndex=0; qIndex<IX_QMGR_MIN_QUEUPP_QID; qIndex++) - { - if (dispatchQInfo[qIndex].priority == priority) - { - /* build the priority table bitmask which match the - * queues of the first half of the priority table - */ - if (lowQuePriorityTableIndex < IX_QMGR_MID_LOW_QUE_PRIORITY_TABLE_INDEX) - { - lowPriorityTableFirstHalfMask |= dispatchQInfo[qIndex].intRegCheckMask; - } - /* build the priority table */ - priorityTable[lowQuePriorityTableIndex++] = qIndex; - } - } - /* Foreach upp queue */ - for(qIndex=IX_QMGR_MIN_QUEUPP_QID; qIndex<=IX_QMGR_MAX_QID; qIndex++) - { - if (dispatchQInfo[qIndex].priority == priority) - { - /* build the priority table bitmask which match the - * queues of the first half of the priority table - */ - if (uppQuePriorityTableIndex < IX_QMGR_MID_UPP_QUE_PRIORITY_TABLE_INDEX) - { - uppPriorityTableFirstHalfMask |= dispatchQInfo[qIndex].intRegCheckMask; - } - /* build the priority table */ - priorityTable[uppQuePriorityTableIndex++] = qIndex; - } - } - } -} - -IxQMgrDispatcherStats* -ixQMgrDispatcherStatsGet (void) -{ - return &dispatcherStats; -} - -PRIVATE void -dummyCallback (IxQMgrQId qId, - IxQMgrCallbackId cbId) -{ - /* Throttle the trace message */ - if ((dispatchQInfo[qId].dummyCallbackCount % LOG_THROTTLE_COUNT) == 0) - { - IX_QMGR_LOG_WARNING2("--> dummyCallback: qId (%d), callbackId (%d)\n",qId,cbId); - } - dispatchQInfo[qId].dummyCallbackCount++; - -#ifndef NDEBUG - /* Update statistcs */ - dispatcherStats.queueStats[qId].intNoCallbackCnt++; -#endif -} -void -ixQMgrLLPShow (int resetStats) -{ -#ifndef NDEBUG - UINT8 i = 0; - UINT32 intEnableRegVal = 0; - - printf ("Livelock statistics are printed on the fly.\n"); - printf ("qId Type EnableCnt DisableCnt IntEnableState Callbacks\n"); - printf ("=== ======== ========= ========== ============== =========\n"); - - for (i=0; i<= IX_QMGR_MAX_LOW_QUE_TABLE_INDEX; i++) - { - if (ixQMgrQTypes[i] != IX_QMGR_TYPE_REALTIME_OTHER) - { - printf (" %2d ", i); - - if (ixQMgrQTypes[i] == IX_QMGR_TYPE_REALTIME_SPORADIC) - { - printf ("Sporadic"); - } - else - { - printf ("Periodic"); - } - - - ixQMgrAqmIfQInterruptEnableRegRead (IX_QMGR_QUELOW_GROUP, - &intEnableRegVal); - - - intEnableRegVal &= dispatchQInfo[i].intRegCheckMask; - intEnableRegVal = intEnableRegVal >> i; - - printf (" %10d %10d %10d %10d\n", - dispatcherStats.queueStats[i].enableCount, - dispatcherStats.queueStats[i].disableCount, - intEnableRegVal, - dispatcherStats.queueStats[i].callbackCnt); - - if (resetStats) - { - dispatcherStats.queueStats[i].enableCount = - dispatcherStats.queueStats[i].disableCount = - dispatcherStats.queueStats[i].callbackCnt = 0; - } - } - } -#else - IX_QMGR_LOG0("Livelock Prevention statistics are only collected in debug mode\n"); -#endif -} - -void -ixQMgrPeriodicDone (void) -{ - UINT32 i = 0; - UINT32 ixQMgrLockKey = 0; - - /* - * for the lower queues - */ - for (i=0; i <= IX_QMGR_MAX_LOW_QUE_TABLE_INDEX; i++) - { - /* - * check for sporadics - */ - if (IX_QMGR_TYPE_REALTIME_SPORADIC == ixQMgrQTypes[i]) - { - /* - * enable any sporadics - */ - ixQMgrLockKey = ixOsalIrqLock(); - ixQMgrAqmIfQInterruptEnable(i); - ixOsalIrqUnlock(ixQMgrLockKey); -#ifndef NDEBUG - /* - * Update statistics - */ - dispatcherStats.queueStats[i].enableCount++; - dispatcherStats.queueStats[i].notificationEnabled = true; -#endif - } - } -} -IX_STATUS -ixQMgrCallbackTypeSet (IxQMgrQId qId, - IxQMgrType type) -{ - UINT32 ixQMgrLockKey = 0; - IxQMgrType ixQMgrOldType =0; - -#ifndef NDEBUG - if (!ixQMgrQIsConfigured(qId)) - { - return IX_QMGR_Q_NOT_CONFIGURED; - } - if (qId >= IX_QMGR_MIN_QUEUPP_QID) - { - return IX_QMGR_PARAMETER_ERROR; - } - if(!IX_QMGR_DISPATCHER_CALLBACK_TYPE_CHECK(type)) - { - return IX_QMGR_PARAMETER_ERROR; - } -#endif - - ixQMgrOldType = ixQMgrQTypes[qId]; - ixQMgrQTypes[qId] = type; - - /* - * check if Q has been changed from type SPORADIC - */ - if (IX_QMGR_TYPE_REALTIME_SPORADIC == ixQMgrOldType) - { - /* - * previously Q was a SPORADIC, this means that LLP - * might have had it disabled. enable it now. - */ - ixQMgrLockKey = ixOsalIrqLock(); - ixQMgrAqmIfQInterruptEnable(qId); - ixOsalIrqUnlock(ixQMgrLockKey); - -#ifndef NDEBUG - /* - * Update statistics - */ - dispatcherStats.queueStats[qId].enableCount++; -#endif - } - - return IX_SUCCESS; -} - -IX_STATUS -ixQMgrCallbackTypeGet (IxQMgrQId qId, - IxQMgrType *type) -{ -#ifndef NDEBUG - if (!ixQMgrQIsConfigured(qId)) - { - return IX_QMGR_Q_NOT_CONFIGURED; - } - if (qId >= IX_QMGR_MIN_QUEUPP_QID) - { - return IX_QMGR_PARAMETER_ERROR; - } - if(type == NULL) - { - return IX_QMGR_PARAMETER_ERROR; - } -#endif - - *type = ixQMgrQTypes[qId]; - return IX_SUCCESS; -} |