diff options
Diffstat (limited to 'drivers/net/npe/IxNpeMhReceive.c')
| -rw-r--r-- | drivers/net/npe/IxNpeMhReceive.c | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/drivers/net/npe/IxNpeMhReceive.c b/drivers/net/npe/IxNpeMhReceive.c new file mode 100644 index 0000000000..57c8be30e5 --- /dev/null +++ b/drivers/net/npe/IxNpeMhReceive.c @@ -0,0 +1,320 @@ +/** + * @file IxNpeMhReceive.c + * + * @author Intel Corporation + * @date 18 Jan 2002 + * + * @brief This file contains the implementation of the private API for the + * Receive module. + * + * + * @par + * IXP400 SW Release version 2.0 + * + * -- Copyright Notice -- + * + * @par + * Copyright 2001-2005, Intel Corporation. + * All rights reserved. + * + * @par + * 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 the Intel Corporation nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * @par + * 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 OWNER 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. + * + * @par + * -- End of Copyright Notice -- +*/ + +/* + * Put the system defined include files required. + */ + + +/* + * Put the user defined include files required. + */ +#include "IxOsal.h" +#include "IxNpeMhMacros_p.h" +#include "IxNpeMhConfig_p.h" +#include "IxNpeMhReceive_p.h" +#include "IxNpeMhSolicitedCbMgr_p.h" +#include "IxNpeMhUnsolicitedCbMgr_p.h" + +/* + * #defines and macros used in this file. + */ + +/* + * Typedefs whose scope is limited to this file. + */ + +/** + * @struct IxNpeMhReceiveStats + * + * @brief This structure is used to maintain statistics for the Receive + * module. + */ + +typedef struct +{ + UINT32 isrs; /**< receive ISR invocations */ + UINT32 receives; /**< receive messages invocations */ + UINT32 messages; /**< messages received */ + UINT32 solicited; /**< solicited messages received */ + UINT32 unsolicited; /**< unsolicited messages received */ + UINT32 callbacks; /**< callbacks invoked */ +} IxNpeMhReceiveStats; + +/* + * Variable declarations global to this file only. Externs are followed by + * static variables. + */ + +PRIVATE IxNpeMhReceiveStats ixNpeMhReceiveStats[IX_NPEMH_NUM_NPES]; + +/* + * Extern function prototypes. + */ + +/* + * Static function prototypes. + */ +PRIVATE +void ixNpeMhReceiveIsr (int npeId); + +PRIVATE +void ixNpeMhReceiveIsr (int npeId) +{ + int lockKey; + + IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Entering " + "ixNpeMhReceiveIsr\n"); + + lockKey = ixOsalIrqLock (); + + /* invoke the message receive routine to get messages from the NPE */ + ixNpeMhReceiveMessagesReceive (npeId); + + /* update statistical info */ + ixNpeMhReceiveStats[npeId].isrs++; + + ixOsalIrqUnlock (lockKey); + + IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Exiting " + "ixNpeMhReceiveIsr\n"); +} + +/* + * Function definition: ixNpeMhReceiveInitialize + */ + +void ixNpeMhReceiveInitialize (void) +{ + IxNpeMhNpeId npeId = 0; + + IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Entering " + "ixNpeMhReceiveInitialize\n"); + + /* for each NPE ... */ + for (npeId = 0; npeId < IX_NPEMH_NUM_NPES; npeId++) + { + /* register our internal ISR for the NPE to handle "outFIFO not */ + /* empty" interrupts */ + ixNpeMhConfigIsrRegister (npeId, ixNpeMhReceiveIsr); + } + + IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Exiting " + "ixNpeMhReceiveInitialize\n"); +} + +/* + * Function definition: ixNpeMhReceiveMessagesReceive + */ + +IX_STATUS ixNpeMhReceiveMessagesReceive ( + IxNpeMhNpeId npeId) +{ + IxNpeMhMessage message = { { 0, 0 } }; + IxNpeMhMessageId messageId = 0; + IxNpeMhCallback callback = NULL; + IX_STATUS status; + + IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Entering " + "ixNpeMhReceiveMessagesReceive\n"); + + /* update statistical info */ + ixNpeMhReceiveStats[npeId].receives++; + + /* while the NPE has messages in its outFIFO */ + while (!ixNpeMhConfigOutFifoIsEmpty (npeId)) + { + /* read a message from the NPE's outFIFO */ + status = ixNpeMhConfigOutFifoRead (npeId, &message); + + if (IX_SUCCESS != status) + { + return status; + } + + /* get the ID of the message */ + messageId = ixNpeMhConfigMessageIdGet (message); + + IX_NPEMH_TRACE2 (IX_NPEMH_DEBUG, + "Received message from NPE %d with ID 0x%02X\n", + npeId, messageId); + + /* update statistical info */ + ixNpeMhReceiveStats[npeId].messages++; + + /* try to find a matching unsolicited callback for this message. */ + + /* we assume the message is unsolicited. only if there is no */ + /* unsolicited callback for this message type do we assume the */ + /* message is solicited. it is much faster to check for an */ + /* unsolicited callback, so doing this check first should result */ + /* in better performance. */ + + ixNpeMhUnsolicitedCbMgrCallbackRetrieve ( + npeId, messageId, &callback); + + if (callback != NULL) + { + IX_NPEMH_TRACE0 (IX_NPEMH_DEBUG, + "Found matching unsolicited callback\n"); + + /* update statistical info */ + ixNpeMhReceiveStats[npeId].unsolicited++; + } + + /* if no unsolicited callback was found try to find a matching */ + /* solicited callback for this message */ + if (callback == NULL) + { + ixNpeMhSolicitedCbMgrCallbackRetrieve ( + npeId, messageId, &callback); + + if (callback != NULL) + { + IX_NPEMH_TRACE0 (IX_NPEMH_DEBUG, + "Found matching solicited callback\n"); + + /* update statistical info */ + ixNpeMhReceiveStats[npeId].solicited++; + } + } + + /* if a callback (either unsolicited or solicited) was found */ + if (callback != NULL) + { + /* invoke the callback to pass the message back to the client */ + callback (npeId, message); + + /* update statistical info */ + ixNpeMhReceiveStats[npeId].callbacks++; + } + else /* no callback (neither unsolicited nor solicited) was found */ + { + IX_NPEMH_TRACE2 (IX_NPEMH_WARNING, + "No matching callback for NPE %d" + " and ID 0x%02X, discarding message\n", + npeId, messageId); + + /* the message will be discarded. this is normal behaviour */ + /* if the client passes a NULL solicited callback when */ + /* sending a message. this indicates that the client is not */ + /* interested in receiving the response. alternatively a */ + /* NULL callback here may signify an unsolicited message */ + /* with no appropriate registered callback. */ + } + } + + IX_NPEMH_TRACE0 (IX_NPEMH_FN_ENTRY_EXIT, "Exiting " + "ixNpeMhReceiveMessagesReceive\n"); + + return IX_SUCCESS; +} + +/* + * Function definition: ixNpeMhReceiveShow + */ + +void ixNpeMhReceiveShow ( + IxNpeMhNpeId npeId) +{ + /* show the ISR invocation counter */ + IX_NPEMH_SHOW ("Receive ISR invocations", + ixNpeMhReceiveStats[npeId].isrs); + + /* show the receive message invocation counter */ + IX_NPEMH_SHOW ("Receive messages invocations", + ixNpeMhReceiveStats[npeId].receives); + + /* show the message received counter */ + IX_NPEMH_SHOW ("Messages received", + ixNpeMhReceiveStats[npeId].messages); + + /* show the solicited message counter */ + IX_NPEMH_SHOW ("Solicited messages received", + ixNpeMhReceiveStats[npeId].solicited); + + /* show the unsolicited message counter */ + IX_NPEMH_SHOW ("Unsolicited messages received", + ixNpeMhReceiveStats[npeId].unsolicited); + + /* show the callback invoked counter */ + IX_NPEMH_SHOW ("Callbacks invoked", + ixNpeMhReceiveStats[npeId].callbacks); + + /* show the message discarded counter */ + IX_NPEMH_SHOW ("Received messages discarded", + (ixNpeMhReceiveStats[npeId].messages - + ixNpeMhReceiveStats[npeId].callbacks)); +} + +/* + * Function definition: ixNpeMhReceiveShowReset + */ + +void ixNpeMhReceiveShowReset ( + IxNpeMhNpeId npeId) +{ + /* reset the ISR invocation counter */ + ixNpeMhReceiveStats[npeId].isrs = 0; + + /* reset the receive message invocation counter */ + ixNpeMhReceiveStats[npeId].receives = 0; + + /* reset the message received counter */ + ixNpeMhReceiveStats[npeId].messages = 0; + + /* reset the solicited message counter */ + ixNpeMhReceiveStats[npeId].solicited = 0; + + /* reset the unsolicited message counter */ + ixNpeMhReceiveStats[npeId].unsolicited = 0; + + /* reset the callback invoked counter */ + ixNpeMhReceiveStats[npeId].callbacks = 0; +} |