* Update Intel IXP4xx support
- Add IXP4xx NPE ethernet MAC support
- Add support for Intel IXDPG425 board
- Add support for Prodrive PDNB3 board
- Add IRQ support
Patch by Stefan Roese, 23 May 2006
[This patch does not include cpu/ixp/npe/IxNpeMicrocode.c which still
sufferes from licensing issues. Blame Intel.]
diff --git a/cpu/ixp/npe/IxNpeMhReceive.c b/cpu/ixp/npe/IxNpeMhReceive.c
new file mode 100644
index 0000000..57c8be3
--- /dev/null
+++ b/cpu/ixp/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;
+}