diff options
Diffstat (limited to 'arch/arm/cpu/ixp/npe/IxEthAccDataPlane.c')
| -rw-r--r-- | arch/arm/cpu/ixp/npe/IxEthAccDataPlane.c | 2483 |
1 files changed, 2483 insertions, 0 deletions
diff --git a/arch/arm/cpu/ixp/npe/IxEthAccDataPlane.c b/arch/arm/cpu/ixp/npe/IxEthAccDataPlane.c new file mode 100644 index 0000000000..b62f0d016e --- /dev/null +++ b/arch/arm/cpu/ixp/npe/IxEthAccDataPlane.c @@ -0,0 +1,2483 @@ +/** + * @file IxEthDataPlane.c + * + * @author Intel Corporation + * @date 12-Feb-2002 + * + * @brief This file contains the implementation of the IXPxxx + * Ethernet Access Data plane component + * + * Design Notes: + * + * @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 -- + */ + +#include "IxNpeMh.h" +#include "IxEthAcc.h" +#include "IxEthDB.h" +#include "IxOsal.h" +#include "IxEthDBPortDefs.h" +#include "IxFeatureCtrl.h" +#include "IxEthAcc_p.h" +#include "IxEthAccQueueAssign_p.h" + +extern PUBLIC IxEthAccMacState ixEthAccMacState[]; +extern PUBLIC UINT32 ixEthAccNewSrcMask; + +/** + * private functions prototype + */ +PRIVATE IX_OSAL_MBUF * +ixEthAccEntryFromQConvert(UINT32 qEntry, UINT32 mask); + +PRIVATE UINT32 +ixEthAccMbufRxQPrepare(IX_OSAL_MBUF *mbuf); + +PRIVATE UINT32 +ixEthAccMbufTxQPrepare(IX_OSAL_MBUF *mbuf); + +PRIVATE IxEthAccStatus +ixEthAccTxSwQHighestPriorityGet(IxEthAccPortId portId, + IxEthAccTxPriority *priorityPtr); + +PRIVATE IxEthAccStatus +ixEthAccTxFromSwQ(IxEthAccPortId portId, + IxEthAccTxPriority priority); + +PRIVATE IxEthAccStatus +ixEthAccRxFreeFromSwQ(IxEthAccPortId portId); + +PRIVATE void +ixEthAccMbufFromTxQ(IX_OSAL_MBUF *mbuf); + +PRIVATE void +ixEthAccMbufFromRxQ(IX_OSAL_MBUF *mbuf); + +PRIVATE IX_STATUS +ixEthAccQmgrLockTxWrite(IxEthAccPortId portId, + UINT32 qBuffer); + +PRIVATE IX_STATUS +ixEthAccQmgrLockRxWrite(IxEthAccPortId portId, + UINT32 qBuffer); + +PRIVATE IX_STATUS +ixEthAccQmgrTxWrite(IxEthAccPortId portId, + UINT32 qBuffer, + UINT32 priority); + +/** + * @addtogroup IxEthAccPri + *@{ + */ + +/* increment a counter only when stats are enabled */ +#define TX_STATS_INC(port,field) \ + IX_ETH_ACC_STATS_INC(ixEthAccPortData[port].ixEthAccTxData.stats.field) +#define RX_STATS_INC(port,field) \ + IX_ETH_ACC_STATS_INC(ixEthAccPortData[port].ixEthAccRxData.stats.field) + +/* always increment the counter (mainly used for unexpected errors) */ +#define TX_INC(port,field) \ + ixEthAccPortData[port].ixEthAccTxData.stats.field++ +#define RX_INC(port,field) \ + ixEthAccPortData[port].ixEthAccRxData.stats.field++ + +PRIVATE IxEthAccDataPlaneStats ixEthAccDataStats; + +extern IxEthAccPortDataInfo ixEthAccPortData[]; +extern IxEthAccInfo ixEthAccDataInfo; + +PRIVATE IxOsalFastMutex txWriteMutex[IX_ETH_ACC_NUMBER_OF_PORTS]; +PRIVATE IxOsalFastMutex rxWriteMutex[IX_ETH_ACC_NUMBER_OF_PORTS]; + +/** + * + * @brief Mbuf header conversion macros : they implement the + * different conversions using a temporary value. They also double-check + * that the parameters can be converted to/from NPE format. + * + */ +#if defined(__wince) && !defined(IN_KERNEL) +#define PTR_VIRT2NPE(ptrSrc,dst) \ + do { UINT32 temp; \ + IX_OSAL_ENSURE(sizeof(ptrSrc) == sizeof(UINT32), "Wrong parameter type"); \ + IX_OSAL_ENSURE(sizeof(dst) == sizeof(UINT32), "Wrong parameter type"); \ + temp = (UINT32)IX_OSAL_MBUF_MBUF_VIRTUAL_TO_PHYSICAL_TRANSLATION((IX_OSAL_MBUF*)ptrSrc); \ + (dst) = IX_OSAL_SWAP_BE_SHARED_LONG(temp); } \ + while(0) + +#define PTR_NPE2VIRT(type,src,ptrDst) \ + do { void *temp; \ + IX_OSAL_ENSURE(sizeof(type) == sizeof(UINT32), "Wrong parameter type"); \ + IX_OSAL_ENSURE(sizeof(src) == sizeof(UINT32), "Wrong parameter type"); \ + IX_OSAL_ENSURE(sizeof(ptrDst) == sizeof(UINT32), "Wrong parameter type"); \ + temp = (void *)IX_OSAL_SWAP_BE_SHARED_LONG(src); \ + (ptrDst) = (type)IX_OSAL_MBUF_MBUF_PHYSICAL_TO_VIRTUAL_TRANSLATION(temp); } \ + while(0) +#else +#define PTR_VIRT2NPE(ptrSrc,dst) \ + do { UINT32 temp; \ + IX_OSAL_ENSURE(sizeof(ptrSrc) == sizeof(UINT32), "Wrong parameter type"); \ + IX_OSAL_ENSURE(sizeof(dst) == sizeof(UINT32), "Wrong parameter type"); \ + temp = (UINT32)IX_OSAL_MMU_VIRT_TO_PHYS(ptrSrc); \ + (dst) = IX_OSAL_SWAP_BE_SHARED_LONG(temp); } \ + while(0) + +#define PTR_NPE2VIRT(type,src,ptrDst) \ + do { void *temp; \ + IX_OSAL_ENSURE(sizeof(type) == sizeof(UINT32), "Wrong parameter type"); \ + IX_OSAL_ENSURE(sizeof(src) == sizeof(UINT32), "Wrong parameter type"); \ + IX_OSAL_ENSURE(sizeof(ptrDst) == sizeof(UINT32), "Wrong parameter type"); \ + temp = (void *)IX_OSAL_SWAP_BE_SHARED_LONG(src); \ + (ptrDst) = (type)IX_OSAL_MMU_PHYS_TO_VIRT(temp); } \ + while(0) +#endif + +/** + * + * @brief Mbuf payload pointer conversion macros : Wince has its own + * method to convert the buffer pointers + */ +#if defined(__wince) && !defined(IN_KERNEL) +#define DATAPTR_VIRT2NPE(ptrSrc,dst) \ + do { UINT32 temp; \ + temp = (UINT32)IX_OSAL_MBUF_DATA_VIRTUAL_TO_PHYSICAL_TRANSLATION(ptrSrc); \ + (dst) = IX_OSAL_SWAP_BE_SHARED_LONG(temp); } \ + while(0) + +#else +#define DATAPTR_VIRT2NPE(ptrSrc,dst) PTR_VIRT2NPE(IX_OSAL_MBUF_MDATA(ptrSrc),dst) +#endif + + +/* Flush the shared part of the mbuf header */ +#define IX_ETHACC_NE_CACHE_FLUSH(mbufPtr) \ + do { \ + IX_OSAL_CACHE_FLUSH(IX_ETHACC_NE_SHARED(mbufPtr), \ + sizeof(IxEthAccNe)); \ + } \ + while(0) + +/* Invalidate the shared part of the mbuf header */ +#define IX_ETHACC_NE_CACHE_INVALIDATE(mbufPtr) \ + do { \ + IX_OSAL_CACHE_INVALIDATE(IX_ETHACC_NE_SHARED(mbufPtr), \ + sizeof(IxEthAccNe)); \ + } \ + while(0) + +/* Preload one cache line (shared mbuf headers are aligned + * and their size is 1 cache line) + * + * IX_OSAL_CACHED is defined when the mbuf headers are + * allocated from cached memory. + * + * Other processor on emulation environment may not implement + * preload function + */ +#ifdef IX_OSAL_CACHED + #if (CPU!=SIMSPARCSOLARIS) && !defined (__wince) + #define IX_ACC_DATA_CACHE_PRELOAD(ptr) \ + do { /* preload a cache line (Xscale Processor) */ \ + __asm__ (" pld [%0]\n": : "r" (ptr)); \ + } \ + while(0) + #else + /* preload not implemented on different processor */ + #define IX_ACC_DATA_CACHE_PRELOAD(mbufPtr) \ + do { /* nothing */ } while (0) + #endif +#else + /* preload not needed if cache is not enabled */ + #define IX_ACC_DATA_CACHE_PRELOAD(mbufPtr) \ + do { /* nothing */ } while (0) +#endif + +/** + * + * @brief function to retrieve the correct pointer from + * a queue entry posted by the NPE + * + * @param qEntry : entry from qmgr queue + * mask : applicable mask for this queue + * (4 most significant bits are used for additional informations) + * + * @return IX_OSAL_MBUF * pointer to mbuf header + * + * @internal + */ +PRIVATE IX_OSAL_MBUF * +ixEthAccEntryFromQConvert(UINT32 qEntry, UINT32 mask) +{ + IX_OSAL_MBUF *mbufPtr; + + if (qEntry != 0) + { + /* mask NPE bits (e.g. priority, port ...) */ + qEntry &= mask; + +#if IX_ACC_DRAM_PHYS_OFFSET != 0 + /* restore the original address pointer (if PHYS_OFFSET is not 0) */ + qEntry |= (IX_ACC_DRAM_PHYS_OFFSET & ~IX_ETHNPE_QM_Q_RXENET_ADDR_MASK); +#endif + /* get the mbuf pointer address from the npe-shared address */ + qEntry -= offsetof(IX_OSAL_MBUF,ix_ne); + + /* phys2virt mbuf */ + mbufPtr = (IX_OSAL_MBUF *)IX_OSAL_MMU_PHYS_TO_VIRT(qEntry); + + /* preload the cacheline shared with NPE */ + IX_ACC_DATA_CACHE_PRELOAD(IX_ETHACC_NE_SHARED(mbufPtr)); + + /* preload the cacheline used by xscale */ + IX_ACC_DATA_CACHE_PRELOAD(mbufPtr); + } + else + { + mbufPtr = NULL; + } + + return mbufPtr; +} + +/* Convert the mbuf header for NPE transmission */ +PRIVATE UINT32 +ixEthAccMbufTxQPrepare(IX_OSAL_MBUF *mbuf) +{ + UINT32 qbuf; + UINT32 len; + + /* endianess swap for tci and flags + note: this is done only once, even for chained buffers */ + IX_ETHACC_NE_FLAGS(mbuf) = IX_OSAL_SWAP_BE_SHARED_SHORT(IX_ETHACC_NE_FLAGS(mbuf)); + IX_ETHACC_NE_VLANTCI(mbuf) = IX_OSAL_SWAP_BE_SHARED_SHORT(IX_ETHACC_NE_VLANTCI(mbuf)); + + /* test for unchained mbufs */ + if (IX_OSAL_MBUF_NEXT_BUFFER_IN_PKT_PTR(mbuf) == NULL) + { + /* "best case" scenario : unchained mbufs */ + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.unchainedTxMBufs); + + /* payload pointer conversion */ + DATAPTR_VIRT2NPE(mbuf, IX_ETHACC_NE_DATA(mbuf)); + + /* unchained mbufs : the frame length is the mbuf length + * and the 2 identical lengths are stored in the same + * word. + */ + len = IX_OSAL_MBUF_MLEN(mbuf); + + /* set the length in both length and pktLen 16-bits fields */ + len |= (len << IX_ETHNPE_ACC_LENGTH_OFFSET); + IX_ETHACC_NE_LEN(mbuf) = IX_OSAL_SWAP_BE_SHARED_LONG(len); + + /* unchained mbufs : next contains 0 */ + IX_ETHACC_NE_NEXT(mbuf) = 0; + + /* flush shared header after all address conversions */ + IX_ETHACC_NE_CACHE_FLUSH(mbuf); + } + else + { + /* chained mbufs */ + IX_OSAL_MBUF *ptr = mbuf; + IX_OSAL_MBUF *nextPtr; + UINT32 frmLen; + + /* get the frame length from the header of the first buffer */ + frmLen = IX_OSAL_MBUF_PKT_LEN(mbuf); + + do + { + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.chainedTxMBufs); + + /* payload pointer */ + DATAPTR_VIRT2NPE(ptr,IX_ETHACC_NE_DATA(ptr)); + /* Buffer length and frame length are stored in the same word */ + len = IX_OSAL_MBUF_MLEN(ptr); + len = frmLen | (len << IX_ETHNPE_ACC_LENGTH_OFFSET); + IX_ETHACC_NE_LEN(ptr) = IX_OSAL_SWAP_BE_SHARED_LONG(len); + + /* get the virtual next chain pointer */ + nextPtr = IX_OSAL_MBUF_NEXT_BUFFER_IN_PKT_PTR(ptr); + if (nextPtr != NULL) + { + /* shared pointer of the next buffer is chained */ + PTR_VIRT2NPE(IX_ETHACC_NE_SHARED(nextPtr), + IX_ETHACC_NE_NEXT(ptr)); + } + else + { + IX_ETHACC_NE_NEXT(ptr) = 0; + } + + /* flush shared header after all address conversions */ + IX_ETHACC_NE_CACHE_FLUSH(ptr); + + /* move to next buffer */ + ptr = nextPtr; + + /* the frame length field is set only in the first buffer + * and is zeroed in the next buffers + */ + frmLen = 0; + } + while(ptr != NULL); + + } + + /* virt2phys mbuf itself */ + qbuf = (UINT32)IX_OSAL_MMU_VIRT_TO_PHYS( + IX_ETHACC_NE_SHARED(mbuf)); + + /* Ensure the bits which are reserved to exchange information with + * the NPE are cleared + * + * If the mbuf address is not correctly aligned, or from an + * incompatible memory range, there is no point to continue + */ + IX_OSAL_ENSURE(((qbuf & ~IX_ETHNPE_QM_Q_TXENET_ADDR_MASK) == 0), + "Invalid address range"); + + return qbuf; +} + +/* Convert the mbuf header for NPE reception */ +PRIVATE UINT32 +ixEthAccMbufRxQPrepare(IX_OSAL_MBUF *mbuf) +{ + UINT32 len; + UINT32 qbuf; + + if (IX_OSAL_MBUF_NEXT_BUFFER_IN_PKT_PTR(mbuf) == NULL) + { + /* "best case" scenario : unchained mbufs */ + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.unchainedRxFreeMBufs); + + /* unchained mbufs : payload pointer */ + DATAPTR_VIRT2NPE(mbuf, IX_ETHACC_NE_DATA(mbuf)); + + /* unchained mbufs : set the buffer length + * and the frame length field is zeroed + */ + len = (IX_OSAL_MBUF_MLEN(mbuf) << IX_ETHNPE_ACC_LENGTH_OFFSET); + IX_ETHACC_NE_LEN(mbuf) = IX_OSAL_SWAP_BE_SHARED_LONG(len); + + /* unchained mbufs : next pointer is null */ + IX_ETHACC_NE_NEXT(mbuf) = 0; + + /* flush shared header after all address conversions */ + IX_ETHACC_NE_CACHE_FLUSH(mbuf); + + /* remove shared header cache line */ + IX_ETHACC_NE_CACHE_INVALIDATE(mbuf); + } + else + { + /* chained mbufs */ + IX_OSAL_MBUF *ptr = mbuf; + IX_OSAL_MBUF *nextPtr; + + do + { + /* chained mbufs */ + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.chainedRxFreeMBufs); + + /* we must save virtual next chain pointer */ + nextPtr = IX_OSAL_MBUF_NEXT_BUFFER_IN_PKT_PTR(ptr); + + if (nextPtr != NULL) + { + /* chaining pointer for NPE */ + PTR_VIRT2NPE(IX_ETHACC_NE_SHARED(nextPtr), + IX_ETHACC_NE_NEXT(ptr)); + } + else + { + IX_ETHACC_NE_NEXT(ptr) = 0; + } + + /* payload pointer */ + DATAPTR_VIRT2NPE(ptr,IX_ETHACC_NE_DATA(ptr)); + + /* buffer length */ + len = (IX_OSAL_MBUF_MLEN(ptr) << IX_ETHNPE_ACC_LENGTH_OFFSET); + IX_ETHACC_NE_LEN(ptr) = IX_OSAL_SWAP_BE_SHARED_LONG(len); + + /* flush shared header after all address conversions */ + IX_ETHACC_NE_CACHE_FLUSH(ptr); + + /* remove shared header cache line */ + IX_ETHACC_NE_CACHE_INVALIDATE(ptr); + + /* next mbuf in the chain */ + ptr = nextPtr; + } + while(ptr != NULL); + } + + /* virt2phys mbuf itself */ + qbuf = (UINT32)IX_OSAL_MMU_VIRT_TO_PHYS( + IX_ETHACC_NE_SHARED(mbuf)); + + /* Ensure the bits which are reserved to exchange information with + * the NPE are cleared + * + * If the mbuf address is not correctly aligned, or from an + * incompatible memory range, there is no point to continue + */ + IX_OSAL_ENSURE(((qbuf & ~IX_ETHNPE_QM_Q_RXENET_ADDR_MASK) == 0), + "Invalid address range"); + + return qbuf; +} + +/* Convert the mbuf header after NPE transmission + * Since there is nothing changed by the NPE, there is no need + * to process anything but the update of internal stats + * when they are enabled +*/ +PRIVATE void +ixEthAccMbufFromTxQ(IX_OSAL_MBUF *mbuf) +{ +#ifndef NDEBUG + /* test for unchained mbufs */ + if (IX_ETHACC_NE_NEXT(mbuf) == 0) + { + /* unchained mbufs : update the stats */ + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.unchainedTxDoneMBufs); + } + else + { + /* chained mbufs : walk the chain and update the stats */ + IX_OSAL_MBUF *ptr = mbuf; + + do + { + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.chainedTxDoneMBufs); + ptr = IX_OSAL_MBUF_NEXT_BUFFER_IN_PKT_PTR(ptr); + } + while (ptr != NULL); + } +#endif +} + +/* Convert the mbuf header after NPE reception */ +PRIVATE void +ixEthAccMbufFromRxQ(IX_OSAL_MBUF *mbuf) +{ + UINT32 len; + + /* endianess swap for tci and flags + note: this is done only once, even for chained buffers */ + IX_ETHACC_NE_FLAGS(mbuf) = IX_OSAL_SWAP_BE_SHARED_SHORT(IX_ETHACC_NE_FLAGS(mbuf)); + IX_ETHACC_NE_VLANTCI(mbuf) = IX_OSAL_SWAP_BE_SHARED_SHORT(IX_ETHACC_NE_VLANTCI(mbuf)); + + /* test for unchained mbufs */ + if (IX_ETHACC_NE_NEXT(mbuf) == 0) + { + /* unchained mbufs */ + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.unchainedRxMBufs); + + /* get the frame length. it is the same than the buffer length */ + len = IX_OSAL_SWAP_BE_SHARED_LONG(IX_ETHACC_NE_LEN(mbuf)); + len &= IX_ETHNPE_ACC_PKTLENGTH_MASK; + IX_OSAL_MBUF_PKT_LEN(mbuf) = IX_OSAL_MBUF_MLEN(mbuf) = len; + + /* clears the next packet field */ + IX_OSAL_MBUF_NEXT_BUFFER_IN_PKT_PTR(mbuf) = NULL; + } + else + { + IX_OSAL_MBUF *ptr = mbuf; + IX_OSAL_MBUF *nextPtr; + UINT32 frmLen; + + /* convert the frame length */ + frmLen = IX_OSAL_SWAP_BE_SHARED_LONG(IX_ETHACC_NE_LEN(mbuf)); + IX_OSAL_MBUF_PKT_LEN(mbuf) = (frmLen & IX_ETHNPE_ACC_PKTLENGTH_MASK); + + /* chained mbufs */ + do + { + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.chainedRxMBufs); + + /* convert the length */ + len = IX_OSAL_SWAP_BE_SHARED_LONG(IX_ETHACC_NE_LEN(ptr)); + IX_OSAL_MBUF_MLEN(ptr) = (len >> IX_ETHNPE_ACC_LENGTH_OFFSET); + + /* get the next pointer */ + PTR_NPE2VIRT(IX_OSAL_MBUF *,IX_ETHACC_NE_NEXT(ptr), nextPtr); + if (nextPtr != NULL) + { + nextPtr = (IX_OSAL_MBUF *)((UINT8 *)nextPtr - offsetof(IX_OSAL_MBUF,ix_ne)); + } + /* set the next pointer */ + IX_OSAL_MBUF_NEXT_BUFFER_IN_PKT_PTR(ptr) = nextPtr; + + /* move to the next buffer */ + ptr = nextPtr; + } + while (ptr != NULL); + } +} + +/* write to qmgr if possible and report an overflow if not possible + * Use a fast lock to protect the queue write. + * This way, the tx feature is reentrant. + */ +PRIVATE IX_STATUS +ixEthAccQmgrLockTxWrite(IxEthAccPortId portId, UINT32 qBuffer) +{ + IX_STATUS qStatus; + if (ixOsalFastMutexTryLock(&txWriteMutex[portId]) == IX_SUCCESS) + { + qStatus = ixQMgrQWrite( + IX_ETH_ACC_PORT_TO_TX_Q_ID(portId), + &qBuffer); +#ifndef NDEBUG + if (qStatus != IX_SUCCESS) + { + TX_STATS_INC(portId, txOverflow); + } +#endif + ixOsalFastMutexUnlock(&txWriteMutex[portId]); + } + else + { + TX_STATS_INC(portId, txLock); + qStatus = IX_QMGR_Q_OVERFLOW; + } + return qStatus; +} + +/* write to qmgr if possible and report an overflow if not possible + * Use a fast lock to protect the queue write. + * This way, the Rx feature is reentrant. + */ +PRIVATE IX_STATUS +ixEthAccQmgrLockRxWrite(IxEthAccPortId portId, UINT32 qBuffer) +{ + IX_STATUS qStatus; + if (ixOsalFastMutexTryLock(&rxWriteMutex[portId]) == IX_SUCCESS) + { + qStatus = ixQMgrQWrite( + IX_ETH_ACC_PORT_TO_RX_FREE_Q_ID(portId), + &qBuffer); +#ifndef NDEBUG + if (qStatus != IX_SUCCESS) + { + RX_STATS_INC(portId, rxFreeOverflow); + } +#endif + ixOsalFastMutexUnlock(&rxWriteMutex[portId]); + } + else + { + RX_STATS_INC(portId, rxFreeLock); + qStatus = IX_QMGR_Q_OVERFLOW; + } + return qStatus; +} + +/* + * Set the priority and write to a qmgr queue. + */ +PRIVATE IX_STATUS +ixEthAccQmgrTxWrite(IxEthAccPortId portId, UINT32 qBuffer, UINT32 priority) +{ + /* fill the priority field */ + qBuffer |= (priority << IX_ETHNPE_QM_Q_FIELD_PRIOR_R); + + return ixEthAccQmgrLockTxWrite(portId, qBuffer); +} + +/** + * + * @brief This function will discover the highest priority S/W Tx Q that + * has entries in it + * + * @param portId - (in) the id of the port whose S/W Tx queues are to be searched + * priorityPtr - (out) the priority of the highest priority occupied q will be written + * here + * + * @return IX_ETH_ACC_SUCCESS if an occupied Q is found + * IX_ETH_ACC_FAIL if no Q has entries + * + * @internal + */ +PRIVATE IxEthAccStatus +ixEthAccTxSwQHighestPriorityGet(IxEthAccPortId portId, + IxEthAccTxPriority *priorityPtr) +{ + if (ixEthAccPortData[portId].ixEthAccTxData.schDiscipline + == FIFO_NO_PRIORITY) + { + if(IX_ETH_ACC_DATAPLANE_IS_Q_EMPTY(ixEthAccPortData[portId]. + ixEthAccTxData.txQ[IX_ETH_ACC_TX_DEFAULT_PRIORITY])) + { + return IX_ETH_ACC_FAIL; + } + else + { + *priorityPtr = IX_ETH_ACC_TX_DEFAULT_PRIORITY; + TX_STATS_INC(portId,txPriority[*priorityPtr]); + return IX_ETH_ACC_SUCCESS; + } + } + else + { + IxEthAccTxPriority highestPriority = IX_ETH_ACC_TX_PRIORITY_7; + while(1) + { + if(!IX_ETH_ACC_DATAPLANE_IS_Q_EMPTY(ixEthAccPortData[portId]. + ixEthAccTxData.txQ[highestPriority])) + { + + *priorityPtr = highestPriority; + TX_STATS_INC(portId,txPriority[highestPriority]); + return IX_ETH_ACC_SUCCESS; + + } + if (highestPriority == IX_ETH_ACC_TX_PRIORITY_0) + { + return IX_ETH_ACC_FAIL; + } + highestPriority--; + } + } +} + +/** + * + * @brief This function will take a buffer from a TX S/W Q and attempt + * to add it to the relevant TX H/W Q + * + * @param portId - the port whose TX queue is to be written to + * priority - identifies the queue from which the entry is to be read + * + * @internal + */ +PRIVATE IxEthAccStatus +ixEthAccTxFromSwQ(IxEthAccPortId portId, + IxEthAccTxPriority priority) +{ + IX_OSAL_MBUF *mbuf; + IX_STATUS qStatus; + + IX_OSAL_ENSURE((UINT32)priority <= (UINT32)7, "Invalid priority"); + + IX_ETH_ACC_DATAPLANE_REMOVE_MBUF_FROM_Q_HEAD( + ixEthAccPortData[portId].ixEthAccTxData.txQ[priority], + mbuf); + + if (mbuf != NULL) + { + /* + * Add the Tx buffer to the H/W Tx Q + * We do not need to flush here as it is already done + * in TxFrameSubmit(). + */ + qStatus = ixEthAccQmgrTxWrite( + portId, + IX_OSAL_MMU_VIRT_TO_PHYS((UINT32)IX_ETHACC_NE_SHARED(mbuf)), + priority); + + if (qStatus == IX_SUCCESS) + { + TX_STATS_INC(portId,txFromSwQOK); + return IX_SUCCESS; + } + else if (qStatus == IX_QMGR_Q_OVERFLOW) + { + /* + * H/W Q overflow, need to save the buffer + * back on the s/w Q. + * we must put it back on the head of the q to avoid + * reordering packet tx + */ + TX_STATS_INC(portId,txFromSwQDelayed); + IX_ETH_ACC_DATAPLANE_ADD_MBUF_TO_Q_HEAD( + ixEthAccPortData[portId].ixEthAccTxData.txQ[priority], + mbuf); + + /*enable Q notification*/ + qStatus = ixQMgrNotificationEnable( + IX_ETH_ACC_PORT_TO_TX_Q_ID(portId), + IX_ETH_ACC_PORT_TO_TX_Q_SOURCE(portId)); + + if (qStatus != IX_SUCCESS && qStatus != IX_QMGR_WARNING) + { + TX_INC(portId,txUnexpectedError); + IX_ETH_ACC_FATAL_LOG( + "ixEthAccTxFromSwQ:Unexpected Error: %u\n", + qStatus, 0, 0, 0, 0, 0); + } + } + else + { + TX_INC(portId,txUnexpectedError); + + /* recovery attempt */ + IX_ETH_ACC_DATAPLANE_ADD_MBUF_TO_Q_HEAD( + ixEthAccPortData[portId].ixEthAccTxData.txQ[priority], + mbuf); + + IX_ETH_ACC_FATAL_LOG( + "ixEthAccTxFromSwQ:Error: unexpected QM status 0x%08X\n", + qStatus, 0, 0, 0, 0, 0); + } + } + else + { + /* sw queue is empty */ + } + return IX_ETH_ACC_FAIL; +} + +/** + * + * @brief This function will take a buffer from a RXfree S/W Q and attempt + * to add it to the relevant RxFree H/W Q + * + * @param portId - the port whose RXFree queue is to be written to + * + * @internal + */ +PRIVATE IxEthAccStatus +ixEthAccRxFreeFromSwQ(IxEthAccPortId portId) +{ + IX_OSAL_MBUF *mbuf; + IX_STATUS qStatus = IX_SUCCESS; + + IX_ETH_ACC_DATAPLANE_REMOVE_MBUF_FROM_Q_HEAD( + ixEthAccPortData[portId].ixEthAccRxData.freeBufferList, + mbuf); + if (mbuf != NULL) + { + /* + * Add The Rx Buffer to the H/W Free buffer Q if possible + */ + qStatus = ixEthAccQmgrLockRxWrite(portId, + IX_OSAL_MMU_VIRT_TO_PHYS( + (UINT32)IX_ETHACC_NE_SHARED(mbuf))); + + if (qStatus == IX_SUCCESS) + { + RX_STATS_INC(portId,rxFreeRepFromSwQOK); + /* + * Buffer added to h/w Q. + */ + return IX_SUCCESS; + } + else if (qStatus == IX_QMGR_Q_OVERFLOW) + { + /* + * H/W Q overflow, need to save the buffer back on the s/w Q. + */ + RX_STATS_INC(portId,rxFreeRepFromSwQDelayed); + + IX_ETH_ACC_DATAPLANE_ADD_MBUF_TO_Q_HEAD( + ixEthAccPortData[portId].ixEthAccRxData.freeBufferList, + mbuf); + } + else + { + /* unexpected qmgr error */ + RX_INC(portId,rxUnexpectedError); + + IX_ETH_ACC_DATAPLANE_ADD_MBUF_TO_Q_HEAD( + ixEthAccPortData[portId].ixEthAccRxData.freeBufferList, + mbuf); + + IX_ETH_ACC_FATAL_LOG("IxEthAccRxFreeFromSwQ:Error: unexpected QM status 0x%08X\n", + qStatus, 0, 0, 0, 0, 0); + } + } + else + { + /* sw queue is empty */ + } + return IX_ETH_ACC_FAIL; +} + + +IX_ETH_ACC_PUBLIC +IxEthAccStatus ixEthAccInitDataPlane() +{ + UINT32 portId; + + /* + * Initialize the service and register callback to other services. + */ + + IX_ETH_ACC_MEMSET(&ixEthAccDataStats, + 0, + sizeof(ixEthAccDataStats)); + + for(portId=0; portId < IX_ETH_ACC_NUMBER_OF_PORTS; portId++) + { + ixOsalFastMutexInit(&txWriteMutex[portId]); + ixOsalFastMutexInit(&rxWriteMutex[portId]); + + IX_ETH_ACC_MEMSET(&ixEthAccPortData[portId], + 0, + sizeof(ixEthAccPortData[portId])); + + ixEthAccPortData[portId].ixEthAccTxData.schDiscipline = FIFO_NO_PRIORITY; + } + + return (IX_ETH_ACC_SUCCESS); +} + + +IX_ETH_ACC_PUBLIC +IxEthAccStatus ixEthAccPortTxDoneCallbackRegister(IxEthAccPortId portId, + IxEthAccPortTxDoneCallback + txCallbackFn, + UINT32 callbackTag) +{ + if (!IX_ETH_ACC_IS_SERVICE_INITIALIZED()) + { + return (IX_ETH_ACC_FAIL); + } + if (!IX_ETH_ACC_IS_PORT_VALID(portId)) + { + return (IX_ETH_ACC_INVALID_PORT); + } + +/* HACK: removing this code to enable NPE-A preliminary testing + * if (IX_ETH_ACC_SUCCESS != ixEthAccSingleEthNpeCheck(portId)) + * { + * IX_ETH_ACC_WARNING_LOG("ixEthAccPortTxDoneCallbackRegister: Unavailable Eth %d: Cannot register TxDone Callback.\n",(INT32)portId,0,0,0,0,0); + * return IX_ETH_ACC_SUCCESS ; + * } + */ + + if (!IX_ETH_IS_PORT_INITIALIZED(portId)) + { + return (IX_ETH_ACC_PORT_UNINITIALIZED); + } + if (txCallbackFn == 0) + /* Check for null function pointer here. */ + { + return (IX_ETH_ACC_INVALID_ARG); + } + ixEthAccPortData[portId].ixEthAccTxData.txBufferDoneCallbackFn = txCallbackFn; + ixEthAccPortData[portId].ixEthAccTxData.txCallbackTag = callbackTag; + return (IX_ETH_ACC_SUCCESS); +} + + +IX_ETH_ACC_PUBLIC +IxEthAccStatus ixEthAccPortRxCallbackRegister(IxEthAccPortId portId, + IxEthAccPortRxCallback + rxCallbackFn, + UINT32 callbackTag) +{ + IxEthAccPortId port; + + if (!IX_ETH_ACC_IS_SERVICE_INITIALIZED()) + { + return (IX_ETH_ACC_FAIL); + } + if (!IX_ETH_ACC_IS_PORT_VALID(portId)) + { + return (IX_ETH_ACC_INVALID_PORT); + } + + if (IX_ETH_ACC_SUCCESS != ixEthAccSingleEthNpeCheck(portId)) + { + IX_ETH_ACC_WARNING_LOG("ixEthAccPortRxCallbackRegister: Unavailable Eth %d: Cannot register Rx Callback.\n",(INT32)portId,0,0,0,0,0); + return IX_ETH_ACC_SUCCESS ; + } + + if (!IX_ETH_IS_PORT_INITIALIZED(portId)) + { + return (IX_ETH_ACC_PORT_UNINITIALIZED); + } + + /* Check for null function pointer here. */ + if (rxCallbackFn == NULL) + { + return (IX_ETH_ACC_INVALID_ARG); + } + + /* Check the user is not changing the callback type + * when the port is enabled. + */ + if (ixEthAccMacState[portId].portDisableState == ACTIVE) + { + for (port = 0; port < IX_ETH_ACC_NUMBER_OF_PORTS; port++) + { + if ((ixEthAccMacState[port].portDisableState == ACTIVE) + && (ixEthAccPortData[port].ixEthAccRxData.rxMultiBufferCallbackInUse == TRUE)) + { + /* one of the active ports has a different rx callback type. + * Changing the callback type when the port is enabled + * is not safe + */ + return (IX_ETH_ACC_INVALID_ARG); + } + } + } + + /* update the callback pointer : this is done before + * registering the new qmgr callback + */ + ixEthAccPortData[portId].ixEthAccRxData.rxCallbackFn = rxCallbackFn; + ixEthAccPortData[portId].ixEthAccRxData.rxCallbackTag = callbackTag; + + /* update the qmgr callback for rx queues */ + if (ixEthAccQMgrRxCallbacksRegister(ixEthRxFrameQMCallback) + != IX_ETH_ACC_SUCCESS) + { + /* unexpected qmgr error */ + IX_ETH_ACC_FATAL_LOG("ixEthAccPortRxCallbackRegister: unexpected QMgr error, " \ + "could not register Rx single-buffer callback\n", 0, 0, 0, 0, 0, 0); + + RX_INC(portId,rxUnexpectedError); + return (IX_ETH_ACC_INVALID_ARG); + } + + ixEthAccPortData[portId].ixEthAccRxData.rxMultiBufferCallbackInUse = FALSE; + + return (IX_ETH_ACC_SUCCESS); +} + +IX_ETH_ACC_PUBLIC +IxEthAccStatus ixEthAccPortMultiBufferRxCallbackRegister( + IxEthAccPortId portId, + IxEthAccPortMultiBufferRxCallback + rxCallbackFn, + UINT32 callbackTag) +{ + IxEthAccPortId port; + + if (!IX_ETH_ACC_IS_SERVICE_INITIALIZED()) + { + return (IX_ETH_ACC_FAIL); + } + if (!IX_ETH_ACC_IS_PORT_VALID(portId)) + { + return (IX_ETH_ACC_INVALID_PORT); + } + + if (IX_ETH_ACC_SUCCESS != ixEthAccSingleEthNpeCheck(portId)) + { + IX_ETH_ACC_WARNING_LOG("ixEthAccPortMultiBufferRxCallbackRegister: Unavailable Eth %d: Cannot register Rx Callback.\n",(INT32)portId,0,0,0,0,0); + return IX_ETH_ACC_SUCCESS ; + } + + if (!IX_ETH_IS_PORT_INITIALIZED(portId)) + { + return (IX_ETH_ACC_PORT_UNINITIALIZED); + } + + /* Check for null function pointer here. */ + if (rxCallbackFn == NULL) + { + return (IX_ETH_ACC_INVALID_ARG); + } + + /* Check the user is not changing the callback type + * when the port is enabled. + */ + if (ixEthAccMacState[portId].portDisableState == ACTIVE) + { + for (port = 0; port < IX_ETH_ACC_NUMBER_OF_PORTS; port++) + { + if ((ixEthAccMacState[port].portDisableState == ACTIVE) + && (ixEthAccPortData[port].ixEthAccRxData.rxMultiBufferCallbackInUse == FALSE)) + { + /* one of the active ports has a different rx callback type. + * Changing the callback type when the port is enabled + * is not safe + */ + return (IX_ETH_ACC_INVALID_ARG); + } + } + } + + /* update the callback pointer : this is done before + * registering the new qmgr callback + */ + ixEthAccPortData[portId].ixEthAccRxData.rxMultiBufferCallbackFn = rxCallbackFn; + ixEthAccPortData[portId].ixEthAccRxData.rxMultiBufferCallbackTag = callbackTag; + + /* update the qmgr callback for rx queues */ + if (ixEthAccQMgrRxCallbacksRegister(ixEthRxMultiBufferQMCallback) + != IX_ETH_ACC_SUCCESS) + { + /* unexpected qmgr error */ + RX_INC(portId,rxUnexpectedError); + + IX_ETH_ACC_FATAL_LOG("ixEthAccPortMultiBufferRxCallbackRegister: unexpected QMgr error, " \ + "could not register Rx multi-buffer callback\n", 0, 0, 0, 0, 0, 0); + + return (IX_ETH_ACC_INVALID_ARG); + } + + ixEthAccPortData[portId].ixEthAccRxData.rxMultiBufferCallbackInUse = TRUE; + + return (IX_ETH_ACC_SUCCESS); +} + +IX_ETH_ACC_PUBLIC +IxEthAccStatus ixEthAccPortTxFrameSubmit(IxEthAccPortId portId, + IX_OSAL_MBUF *buffer, + IxEthAccTxPriority priority) +{ + IX_STATUS qStatus = IX_SUCCESS; + UINT32 qBuffer; + IxEthAccTxPriority highestPriority; + IxQMgrQStatus txQStatus; + +#ifndef NDEBUG + if (buffer == NULL) + { + return (IX_ETH_ACC_FAIL); + } + if (!IX_ETH_ACC_IS_SERVICE_INITIALIZED()) + { + return (IX_ETH_ACC_FAIL); + } + if (!IX_ETH_ACC_IS_PORT_VALID(portId)) + { + return (IX_ETH_ACC_INVALID_PORT); + } + + if (IX_ETH_ACC_SUCCESS != ixEthAccSingleEthNpeCheck(portId)) + { + IX_ETH_ACC_FATAL_LOG("ixEthAccPortTxFrameSubmit: Unavailable Eth %d: Cannot submit Tx Frame.\n", + (INT32)portId,0,0,0,0,0); + return IX_ETH_ACC_PORT_UNINITIALIZED ; + } + + if (!IX_ETH_IS_PORT_INITIALIZED(portId)) + { + return (IX_ETH_ACC_PORT_UNINITIALIZED); + } + if ((UINT32)priority > (UINT32)IX_ETH_ACC_TX_PRIORITY_7) + { + return (IX_ETH_ACC_INVALID_ARG); + } +#endif + + /* + * Need to Flush the MBUF and its contents (data) as it may be + * read from the NPE. Convert virtual addresses to physical addresses also. + */ + qBuffer = ixEthAccMbufTxQPrepare(buffer); + + /* + * If no fifo priority set on Xscale ... + */ + if (ixEthAccPortData[portId].ixEthAccTxData.schDiscipline == + FIFO_NO_PRIORITY) + { + /* + * Add The Tx Buffer to the H/W Tx Q if possible + * (the priority is passed to the NPE, because + * the NPE is able to reorder the frames + * before transmission to the underlying hardware) + */ + qStatus = ixEthAccQmgrTxWrite(portId, + qBuffer, + IX_ETH_ACC_TX_DEFAULT_PRIORITY); + + if (qStatus == IX_SUCCESS) + { + TX_STATS_INC(portId,txQOK); + + /* + * "best case" scenario : Buffer added to h/w Q. + */ + return (IX_SUCCESS); + } + else if (qStatus == IX_QMGR_Q_OVERFLOW) + { + /* + * We were unable to write the buffer to the + * appropriate H/W Q, Save it in the sw Q. + * (use the default priority queue regardless of + * input parameter) + */ + priority = IX_ETH_ACC_TX_DEFAULT_PRIORITY; + } + else + { + /* unexpected qmgr error */ + TX_INC(portId,txUnexpectedError); + IX_ETH_ACC_FATAL_LOG( + "ixEthAccPortTxFrameSubmit:Error: qStatus = %u\n", + (UINT32)qStatus, 0, 0, 0, 0, 0); + return (IX_ETH_ACC_FAIL); + } + } + else if (ixEthAccPortData[portId].ixEthAccTxData.schDiscipline == + FIFO_PRIORITY) + { + + /* + * For priority transmission, put the frame directly on the H/W queue + * if the H/W queue is empty, otherwise, put it in a S/W Q + */ + ixQMgrQStatusGet(IX_ETH_ACC_PORT_TO_TX_Q_ID(portId), &txQStatus); + if((txQStatus & IX_QMGR_Q_STATUS_E_BIT_MASK) != 0) + { + /*The tx queue is empty, check whether there are buffers on the s/w queues*/ + if(ixEthAccTxSwQHighestPriorityGet(portId, &highestPriority) + !=IX_ETH_ACC_FAIL) + { + /*there are buffers on the s/w queues, submit them*/ + ixEthAccTxFromSwQ(portId, highestPriority); + + /* the queue was empty, 1 buffer is already supplied + * but is likely to be immediately transmitted and the + * hw queue is likely to be empty again, so submit + * more from the sw queues + */ + if(ixEthAccTxSwQHighestPriorityGet(portId, &highestPriority) + !=IX_ETH_ACC_FAIL) + { + ixEthAccTxFromSwQ(portId, highestPriority); + /* + * and force the buffer supplied to be placed + * on a priority queue + */ + qStatus = IX_QMGR_Q_OVERFLOW; + } + else + { + /*there are no buffers in the s/w queues, submit directly*/ + qStatus = ixEthAccQmgrTxWrite(portId, qBuffer, priority); + } + } + else + { + /*there are no buffers in the s/w queues, submit directly*/ + qStatus = ixEthAccQmgrTxWrite(portId, qBuffer, priority); + } + } + else + { + qStatus = IX_QMGR_Q_OVERFLOW; + } + } + else + { + TX_INC(portId,txUnexpectedError); + IX_ETH_ACC_FATAL_LOG( + "ixEthAccPortTxFrameSubmit:Error: wrong schedule discipline setup\n", + 0, 0, 0, 0, 0, 0); + return (IX_ETH_ACC_FAIL); + } + + if(qStatus == IX_SUCCESS ) + { + TX_STATS_INC(portId,txQOK); + return IX_ETH_ACC_SUCCESS; + } + else if(qStatus == IX_QMGR_Q_OVERFLOW) + { + TX_STATS_INC(portId,txQDelayed); + /* + * We were unable to write the buffer to the + * appropriate H/W Q, Save it in a s/w Q. + */ + IX_ETH_ACC_DATAPLANE_ADD_MBUF_TO_Q_TAIL( + ixEthAccPortData[portId]. + ixEthAccTxData.txQ[priority], + buffer); + + qStatus = ixQMgrNotificationEnable( + IX_ETH_ACC_PORT_TO_TX_Q_ID(portId), + IX_ETH_ACC_PORT_TO_TX_Q_SOURCE(portId)); + + if (qStatus != IX_SUCCESS) + { + if (qStatus == IX_QMGR_WARNING) + { + /* notification is enabled for a queue + * which is already empty (the condition is already met) + * and there will be no more queue event to drain the sw queue + */ + TX_STATS_INC(portId,txLateNotificationEnabled); + + /* pull a buffer from the sw queue */ + if(ixEthAccTxSwQHighestPriorityGet(portId, &highestPriority) + !=IX_ETH_ACC_FAIL) + { + /*there are buffers on the s/w queues, submit from them*/ + ixEthAccTxFromSwQ(portId, highestPriority); + } + } + else + { + TX_INC(portId,txUnexpectedError); + IX_ETH_ACC_FATAL_LOG( + "ixEthAccPortTxFrameSubmit: unexpected Error: %u\n", + qStatus, 0, 0, 0, 0, 0); + } + } + } + else + { + TX_INC(portId,txUnexpectedError); + IX_ETH_ACC_FATAL_LOG( + "ixEthAccPortTxFrameSubmit: unexpected Error: %u\n", + qStatus, 0, 0, 0, 0, 0); + return (IX_ETH_ACC_FAIL); + } + + return (IX_ETH_ACC_SUCCESS); +} + + +/** + * + * @brief replenish: convert a chain of mbufs to the format + * expected by the NPE + * + */ + +IX_ETH_ACC_PUBLIC +IxEthAccStatus ixEthAccPortRxFreeReplenish(IxEthAccPortId portId, + IX_OSAL_MBUF *buffer) +{ + IX_STATUS qStatus = IX_SUCCESS; + UINT32 qBuffer; + + /* + * Check buffer is valid. + */ + +#ifndef NDEBUG + /* check parameter value */ + if (buffer == 0) + { + return (IX_ETH_ACC_FAIL); + } + if (!IX_ETH_ACC_IS_SERVICE_INITIALIZED()) + { + return (IX_ETH_ACC_FAIL); + } + if (!IX_ETH_ACC_IS_PORT_VALID(portId)) + { + return (IX_ETH_ACC_INVALID_PORT); + } + + /* check initialisation is done */ + if (IX_ETH_ACC_SUCCESS != ixEthAccSingleEthNpeCheck(portId)) + { + IX_ETH_ACC_FATAL_LOG(" ixEthAccPortRxFreeReplenish: Unavailable Eth %d: Cannot replenish Rx Free Q.\n",(INT32)portId,0,0,0,0,0); + return IX_ETH_ACC_PORT_UNINITIALIZED ; + } + + if (!IX_ETH_IS_PORT_INITIALIZED(portId)) + { + return (IX_ETH_ACC_PORT_UNINITIALIZED); + } + /* check boundaries and constraints */ + if (IX_OSAL_MBUF_MLEN(buffer) < IX_ETHNPE_ACC_RXFREE_BUFFER_LENGTH_MIN) + { + return (IX_ETH_ACC_FAIL); + } +#endif + + qBuffer = ixEthAccMbufRxQPrepare(buffer); + + /* + * Add The Rx Buffer to the H/W Free buffer Q if possible + */ + qStatus = ixEthAccQmgrLockRxWrite(portId, qBuffer); + + if (qStatus == IX_SUCCESS) + { + RX_STATS_INC(portId,rxFreeRepOK); + /* + * Buffer added to h/w Q. + */ + return (IX_SUCCESS); + } + else if (qStatus == IX_QMGR_Q_OVERFLOW) + { + RX_STATS_INC(portId,rxFreeRepDelayed); + /* + * We were unable to write the buffer to the approprate H/W Q, + * Save it in a s/w Q. + */ + IX_ETH_ACC_DATAPLANE_ADD_MBUF_TO_Q_TAIL( + ixEthAccPortData[portId].ixEthAccRxData.freeBufferList, + buffer); + + qStatus = ixQMgrNotificationEnable( + IX_ETH_ACC_PORT_TO_RX_FREE_Q_ID(portId), + IX_ETH_ACC_PORT_TO_RX_FREE_Q_SOURCE(portId)); + + if (qStatus != IX_SUCCESS) + { + if (qStatus == IX_QMGR_WARNING) + { + /* notification is enabled for a queue + * which is already empty (the condition is already met) + * and there will be no more queue event to drain the sw queue + * move an entry from the sw queue to the hw queue */ + RX_STATS_INC(portId,rxFreeLateNotificationEnabled); + ixEthAccRxFreeFromSwQ(portId); + } + else + { + RX_INC(portId,rxUnexpectedError); + IX_ETH_ACC_FATAL_LOG( + "ixEthAccRxPortFreeReplenish:Error: %u\n", + qStatus, 0, 0, 0, 0, 0); + } + } + } + else + { + RX_INC(portId,rxUnexpectedError); + IX_ETH_ACC_FATAL_LOG( + "ixEthAccRxPortFreeReplenish:Error: qStatus = %u\n", + (UINT32)qStatus, 0, 0, 0, 0, 0); + return(IX_ETH_ACC_FAIL); + } + return (IX_ETH_ACC_SUCCESS); +} + + +IX_ETH_ACC_PUBLIC +IxEthAccStatus ixEthAccTxSchedulingDisciplineSetPriv(IxEthAccPortId portId, + IxEthAccSchedulerDiscipline + sched) +{ + if (!IX_ETH_ACC_IS_PORT_VALID(portId)) + { + return (IX_ETH_ACC_INVALID_PORT); + } + + if (IX_ETH_ACC_SUCCESS != ixEthAccSingleEthNpeCheck(portId)) + { + IX_ETH_ACC_WARNING_LOG("ixEthAccTxSchedulingDisciplineSet: Unavailable Eth %d: Cannot set Tx Scheduling Discipline.\n",(INT32)portId,0,0,0,0,0); + return IX_ETH_ACC_SUCCESS ; + } + + if (!IX_ETH_IS_PORT_INITIALIZED(portId)) + { + return (IX_ETH_ACC_PORT_UNINITIALIZED); + } + + if (sched != FIFO_PRIORITY && sched != FIFO_NO_PRIORITY) + { + return (IX_ETH_ACC_INVALID_ARG); + } + + ixEthAccPortData[portId].ixEthAccTxData.schDiscipline = sched; + return (IX_ETH_ACC_SUCCESS); +} + +IX_ETH_ACC_PUBLIC +IxEthAccStatus ixEthAccRxSchedulingDisciplineSetPriv(IxEthAccSchedulerDiscipline + sched) +{ + if (sched != FIFO_PRIORITY && sched != FIFO_NO_PRIORITY) + { + return (IX_ETH_ACC_INVALID_ARG); + } + + ixEthAccDataInfo.schDiscipline = sched; + + return (IX_ETH_ACC_SUCCESS); +} + + +/** + * @fn ixEthRxFrameProcess(IxEthAccPortId portId, IX_OSAL_MBUF *mbufPtr) + * + * @brief process incoming frame : + * + * @param @ref IxQMgrCallback IxQMgrMultiBufferCallback + * + * @return none + * + * @internal + * + */ +IX_ETH_ACC_PRIVATE BOOL +ixEthRxFrameProcess(IxEthAccPortId portId, IX_OSAL_MBUF *mbufPtr) +{ + UINT32 flags; + IxEthDBStatus result; + +#ifndef NDEBUG + /* Prudent to at least check the port is within range */ + if (portId >= IX_ETH_ACC_NUMBER_OF_PORTS) + { + ixEthAccDataStats.unexpectedError++; + IX_ETH_ACC_FATAL_LOG( + "ixEthRxFrameProcess: Illegal port: %u\n", + (UINT32)portId, 0, 0, 0, 0, 0); + return FALSE; + } +#endif + + /* convert fields from mbuf header */ + ixEthAccMbufFromRxQ(mbufPtr); + + /* check about any special processing for this frame */ + flags = IX_ETHACC_NE_FLAGS(mbufPtr); + if ((flags & (IX_ETHACC_NE_FILTERMASK | IX_ETHACC_NE_NEWSRCMASK)) == 0) + { + /* "best case" scenario : nothing special to do for this frame */ + return TRUE; + } + +#ifdef CONFIG_IXP425_COMPONENT_ETHDB + /* if a new source MAC address is detected by the NPE, + * update IxEthDB with the portId and the MAC address. + */ + if ((flags & IX_ETHACC_NE_NEWSRCMASK & ixEthAccNewSrcMask) != 0) + { + result = ixEthDBFilteringDynamicEntryProvision(portId, + (IxEthDBMacAddr *) IX_ETHACC_NE_SOURCEMAC(mbufPtr)); + + if (result != IX_ETH_DB_SUCCESS && result != IX_ETH_DB_FEATURE_UNAVAILABLE) + { + if ((ixEthAccMacState[portId].portDisableState == ACTIVE) && (result != IX_ETH_DB_BUSY)) + { + RX_STATS_INC(portId, rxUnexpectedError); + IX_ETH_ACC_FATAL_LOG("ixEthRxFrameProcess: Failed to add source MAC \ + to the Learning/Filtering database\n", 0, 0, 0, 0, 0, 0); + } + else + { + /* we expect this to fail during PortDisable, as EthDB is disabled for + * that port and will refuse to learn new addresses + */ + } + } + else + { + RX_STATS_INC(portId, rxUnlearnedMacAddress); + } + } +#endif + + /* check if this frame should have been filtered + * by the NPE and take the appropriate action + */ + if (((flags & IX_ETHACC_NE_FILTERMASK) != 0) + && (ixEthAccMacState[portId].portDisableState == ACTIVE)) + { + /* If the mbuf was allocated with a small data size, or the current data pointer is not + * within the allocated data area, then the buffer is non-standard and has to be + * replenished with the minimum size only + */ + if( (IX_OSAL_MBUF_ALLOCATED_BUFF_LEN(mbufPtr) < IX_ETHNPE_ACC_RXFREE_BUFFER_LENGTH_MIN) + || ((UINT8 *)IX_OSAL_MBUF_ALLOCATED_BUFF_DATA(mbufPtr) > IX_OSAL_MBUF_MDATA(mbufPtr)) + || ((UINT8 *)(IX_OSAL_MBUF_ALLOCATED_BUFF_DATA(mbufPtr) + + IX_OSAL_MBUF_ALLOCATED_BUFF_LEN(mbufPtr)) + < IX_OSAL_MBUF_MDATA(mbufPtr)) ) + { + /* set to minimum length */ + IX_OSAL_MBUF_MLEN(mbufPtr) = IX_OSAL_MBUF_PKT_LEN(mbufPtr) = + IX_ETHNPE_ACC_RXFREE_BUFFER_LENGTH_MIN; + } + else + { + /* restore original length */ + IX_OSAL_MBUF_MLEN(mbufPtr) = IX_OSAL_MBUF_PKT_LEN(mbufPtr) = + ( IX_OSAL_MBUF_ALLOCATED_BUFF_LEN(mbufPtr) - + (IX_OSAL_MBUF_MDATA(mbufPtr) - (UINT8 *)IX_OSAL_MBUF_ALLOCATED_BUFF_DATA(mbufPtr)) ); + } + + /* replenish from here */ + if (ixEthAccPortRxFreeReplenish(portId, mbufPtr) != IX_ETH_ACC_SUCCESS) + { + IX_ETH_ACC_FATAL_LOG("ixEthRxFrameProcess: Failed to replenish with filtered frame\ + on port %d\n", portId, 0, 0, 0, 0, 0); + } + + RX_STATS_INC(portId, rxFiltered); + + /* indicate that frame should not be subjected to further processing */ + return FALSE; + } + + return TRUE; +} + + +/** + * @fn ixEthRxFrameQMCallback + * + * @brief receive callback for Frame receive Q from NPE + * + * Frames are passed one-at-a-time to the user + * + * @param @ref IxQMgrCallback + * + * @return none + * + * @internal + * + * Design note : while processing the entry X, entry X+1 is preloaded + * into memory to reduce the number of stall cycles + * + */ +void ixEthRxFrameQMCallback(IxQMgrQId qId, IxQMgrCallbackId callbackId) +{ + IX_OSAL_MBUF *mbufPtr; + IX_OSAL_MBUF *nextMbufPtr; + UINT32 qEntry; + UINT32 nextQEntry; + UINT32 *qEntryPtr; + UINT32 portId; + UINT32 destPortId; + UINT32 npeId; + UINT32 rxQReadStatus; + + /* + * Design note : entries are read in a buffer, This buffer contains + * an extra zeroed entry so the loop will + * always terminate on a null entry, whatever the result of Burst read is. + */ + UINT32 rxQEntry[IX_ETH_ACC_MAX_RX_FRAME_CONSUME_PER_CALLBACK + 1]; + + /* + * Indication of the number of times the callback is used. + */ + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.rxCallbackCounter); + + do + { + /* + * Indication of the number of times the queue is drained + */ + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.rxCallbackBurstRead); + + /* ensure the last entry of the array contains a zeroed value */ + qEntryPtr = rxQEntry; + qEntryPtr[IX_ETH_ACC_MAX_RX_FRAME_CONSUME_PER_CALLBACK] = 0; + + rxQReadStatus = ixQMgrQBurstRead(qId, + IX_ETH_ACC_MAX_RX_FRAME_CONSUME_PER_CALLBACK, + qEntryPtr); + +#ifndef NDEBUG + if ((rxQReadStatus != IX_QMGR_Q_UNDERFLOW) + && (rxQReadStatus != IX_SUCCESS)) + { + ixEthAccDataStats.unexpectedError++; + /*major error*/ + IX_ETH_ACC_FATAL_LOG( + "ixEthRxFrameQMCallback:Error: %u\n", + (UINT32)rxQReadStatus, 0, 0, 0, 0, 0); + return; + } +#endif + + /* convert and preload the next entry + * (the conversion function takes care about null pointers which + * are used to mark the end of the loop) + */ + nextQEntry = *qEntryPtr; + nextMbufPtr = ixEthAccEntryFromQConvert(nextQEntry, + IX_ETHNPE_QM_Q_RXENET_ADDR_MASK); + + while(nextQEntry != 0) + { + /* get the next entry */ + qEntry = nextQEntry; + mbufPtr = nextMbufPtr; + +#ifndef NDEBUG + if (mbufPtr == NULL) + { + ixEthAccDataStats.unexpectedError++; + IX_ETH_ACC_FATAL_LOG( + "ixEthRxFrameQMCallback: Null Mbuf Ptr\n", + 0, 0, 0, 0, 0, 0); + return; + } +#endif + + /* convert the next entry + * (the conversion function takes care about null pointers which + * are used to mark the end of the loop) + */ + nextQEntry = *(++qEntryPtr); + nextMbufPtr = ixEthAccEntryFromQConvert(nextQEntry, + IX_ETHNPE_QM_Q_RXENET_ADDR_MASK); + + /* + * Get Port and Npe ID from message. + */ + npeId = ((IX_ETHNPE_QM_Q_RXENET_NPEID_MASK & + qEntry) >> IX_ETHNPE_QM_Q_FIELD_NPEID_R); + portId = IX_ETH_ACC_NPE_TO_PORT_ID(npeId); + + /* process frame, check the return code and skip the remaining of + * the loop if the frame is to be filtered out + */ + if (ixEthRxFrameProcess(portId, mbufPtr)) + { + /* destination portId for this packet */ + destPortId = IX_ETHACC_NE_DESTPORTID(mbufPtr); + + if (destPortId != IX_ETH_DB_UNKNOWN_PORT) + { + destPortId = IX_ETH_DB_NPE_LOGICAL_ID_TO_PORT_ID(destPortId); + } + + /* test if QoS is enabled in ethAcc + */ + if (ixEthAccDataInfo.schDiscipline == FIFO_PRIORITY) + { + /* check if there is a higher priority queue + * which may require processing and then process it. + */ + if (ixEthAccDataInfo.higherPriorityQueue[qId] < IX_QMGR_MAX_NUM_QUEUES) + { + ixEthRxFrameQMCallback(ixEthAccDataInfo.higherPriorityQueue[qId], + callbackId); + } + } + + /* + * increment priority stats + */ + RX_STATS_INC(portId,rxPriority[IX_ETHACC_NE_QOS(mbufPtr)]); + + /* + * increment callback count stats + */ + RX_STATS_INC(portId,rxFrameClientCallback); + + /* + * Call user level callback. + */ + ixEthAccPortData[portId].ixEthAccRxData.rxCallbackFn( + ixEthAccPortData[portId].ixEthAccRxData.rxCallbackTag, + mbufPtr, + destPortId); + } + } + } while (rxQReadStatus == IX_SUCCESS); +} + +/** + * @fn ixEthRxMultiBufferQMCallback + * + * @brief receive callback for Frame receive Q from NPE + * + * Frames are passed as an array to the user + * + * @param @ref IxQMgrCallback + * + * @return none + * + * @internal + * + * Design note : while processing the entry X, entry X+1 is preloaded + * into memory to reduce the number of stall cycles + * + */ +void ixEthRxMultiBufferQMCallback(IxQMgrQId qId, IxQMgrCallbackId callbackId) +{ + IX_OSAL_MBUF *mbufPtr; + IX_OSAL_MBUF *nextMbufPtr; + UINT32 qEntry; + UINT32 nextQEntry; + UINT32 *qEntryPtr; + UINT32 portId; + UINT32 npeId; + UINT32 rxQReadStatus; + /* + * Design note : entries are read in a static buffer, This buffer contains + * an extra zeroed entry so the loop will + * always terminate on a null entry, whatever the result of Burst read is. + */ + static UINT32 rxQEntry[IX_ETH_ACC_MAX_RX_FRAME_CONSUME_PER_CALLBACK + 1]; + static IX_OSAL_MBUF *rxMbufPortArray[IX_ETH_ACC_NUMBER_OF_PORTS][IX_ETH_ACC_MAX_RX_FRAME_CONSUME_PER_CALLBACK + 1]; + IX_OSAL_MBUF **rxMbufPtr[IX_ETH_ACC_NUMBER_OF_PORTS]; + + for (portId = 0; portId < IX_ETH_ACC_NUMBER_OF_PORTS; portId++) + { + rxMbufPtr[portId] = rxMbufPortArray[portId]; + } + + /* + * Indication of the number of times the callback is used. + */ + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.rxCallbackCounter); + + do + { + /* + * Indication of the number of times the queue is drained + */ + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.rxCallbackBurstRead); + + /* ensure the last entry of the array contains a zeroed value */ + qEntryPtr = rxQEntry; + qEntryPtr[IX_ETH_ACC_MAX_RX_FRAME_CONSUME_PER_CALLBACK] = 0; + + rxQReadStatus = ixQMgrQBurstRead(qId, + IX_ETH_ACC_MAX_RX_FRAME_CONSUME_PER_CALLBACK, + qEntryPtr); + +#ifndef NDEBUG + if ((rxQReadStatus != IX_QMGR_Q_UNDERFLOW) + && (rxQReadStatus != IX_SUCCESS)) + { + ixEthAccDataStats.unexpectedError++; + /*major error*/ + IX_ETH_ACC_FATAL_LOG( + "ixEthRxFrameMultiBufferQMCallback:Error: %u\n", + (UINT32)rxQReadStatus, 0, 0, 0, 0, 0); + return; + } +#endif + + /* convert and preload the next entry + * (the conversion function takes care about null pointers which + * are used to mark the end of the loop) + */ + nextQEntry = *qEntryPtr; + nextMbufPtr = ixEthAccEntryFromQConvert(nextQEntry, + IX_ETHNPE_QM_Q_RXENET_ADDR_MASK); + + while(nextQEntry != 0) + { + /* get the next entry */ + qEntry = nextQEntry; + mbufPtr = nextMbufPtr; + +#ifndef NDEBUG + if (mbufPtr == NULL) + { + ixEthAccDataStats.unexpectedError++; + IX_ETH_ACC_FATAL_LOG( + "ixEthRxFrameMultiBufferQMCallback:Error: Null Mbuf Ptr\n", + 0, 0, 0, 0, 0, 0); + return; + } +#endif + + /* convert the next entry + * (the conversion function takes care about null pointers which + * are used to mark the end of the loop) + */ + nextQEntry = *(++qEntryPtr); + nextMbufPtr = ixEthAccEntryFromQConvert(nextQEntry, + IX_ETHNPE_QM_Q_RXENET_ADDR_MASK); + + /* + * Get Port and Npe ID from message. + */ + npeId = ((IX_ETHNPE_QM_Q_RXENET_NPEID_MASK & + qEntry) >> + IX_ETHNPE_QM_Q_FIELD_NPEID_R); + portId = IX_ETH_ACC_NPE_TO_PORT_ID(npeId); + + /* skip the remaining of the loop if the frame is + * to be filtered out + */ + if (ixEthRxFrameProcess(portId, mbufPtr)) + { + /* store a mbuf pointer in an array */ + *rxMbufPtr[portId]++ = mbufPtr; + + /* + * increment priority stats + */ + RX_STATS_INC(portId,rxPriority[IX_ETHACC_NE_QOS(mbufPtr)]); + } + + /* test for QoS enabled in ethAcc */ + if (ixEthAccDataInfo.schDiscipline == FIFO_PRIORITY) + { + /* check if there is a higher priority queue + * which may require processing and then process it. + */ + if (ixEthAccDataInfo.higherPriorityQueue[qId] < IX_QMGR_MAX_NUM_QUEUES) + { + ixEthRxMultiBufferQMCallback(ixEthAccDataInfo.higherPriorityQueue[qId], + callbackId); + } + } + } + + /* check if any of the the arrays contains any entry */ + for (portId = 0; portId < IX_ETH_ACC_NUMBER_OF_PORTS; portId++) + { + if (rxMbufPtr[portId] != rxMbufPortArray[portId]) + { + /* add a last NULL pointer at the end of the + * array of mbuf pointers + */ + *rxMbufPtr[portId] = NULL; + + /* + * increment callback count stats + */ + RX_STATS_INC(portId,rxFrameClientCallback); + + /* + * Call user level callback with an array of + * buffers (NULL terminated) + */ + ixEthAccPortData[portId].ixEthAccRxData. + rxMultiBufferCallbackFn( + ixEthAccPortData[portId].ixEthAccRxData. + rxMultiBufferCallbackTag, + rxMbufPortArray[portId]); + + /* reset the buffer pointer to the beginning of + * the array + */ + rxMbufPtr[portId] = rxMbufPortArray[portId]; + } + } + + } while (rxQReadStatus == IX_SUCCESS); +} + + +/** + * @brief rxFree low event handler + * + */ +void ixEthRxFreeQMCallback(IxQMgrQId qId, IxQMgrCallbackId callbackId) +{ + IxEthAccPortId portId = (IxEthAccPortId) callbackId; + int lockVal; + UINT32 maxQWritesToPerform = IX_ETH_ACC_MAX_RX_FREE_BUFFERS_LOAD; + IX_STATUS qStatus = IX_SUCCESS; + + /* + * We have reached a low threshold on one of the Rx Free Qs + */ + + /*note that due to the fact that we are working off an Empty threshold, this callback + need only write a single entry to the Rx Free queue in order to re-arm the notification + */ + + RX_STATS_INC(portId,rxFreeLowCallback); + + /* + * Get buffers from approprite S/W Rx freeBufferList Q. + */ + +#ifndef NDEBUG + if (!IX_ETH_ACC_IS_PORT_VALID(portId)) + { + ixEthAccDataStats.unexpectedError++; + IX_ETH_ACC_FATAL_LOG( + "ixEthRxFreeQMCallback:Error: Invalid Port 0x%08X\n", + portId, 0, 0, 0, 0, 0); + return; + } +#endif + IX_ETH_ACC_DATA_PLANE_LOCK(lockVal); + if (IX_ETH_ACC_DATAPLANE_IS_Q_EMPTY(ixEthAccPortData[portId]. + ixEthAccRxData.freeBufferList)) + { + /* + * Turn off Q callback notification for Q in Question. + */ + qStatus = ixQMgrNotificationDisable( + IX_ETH_ACC_PORT_TO_RX_FREE_Q_ID(portId)); + + + IX_ETH_ACC_DATA_PLANE_UNLOCK(lockVal); + + if (qStatus != IX_SUCCESS) + { + RX_INC(portId,rxUnexpectedError); + IX_ETH_ACC_FATAL_LOG( + "ixEthRxFreeQMCallback:Error: unexpected QM status 0x%08X\n", + qStatus, 0, 0, 0, 0, 0); + return; + } + } + else + { + IX_ETH_ACC_DATA_PLANE_UNLOCK(lockVal); + /* + * Load the H/W Q with buffers from the s/w Q. + */ + + do + { + /* + * Consume Q entries. - Note Q contains Physical addresss, + * and have already been flushed to memory, + * And endianess converted if required. + */ + if (ixEthAccRxFreeFromSwQ(portId) != IX_SUCCESS) + { + /* + * No more entries in s/w Q. + * Turn off Q callback indication + */ + + IX_ETH_ACC_DATA_PLANE_LOCK(lockVal); + if (IX_ETH_ACC_DATAPLANE_IS_Q_EMPTY(ixEthAccPortData[portId]. + ixEthAccRxData.freeBufferList)) + { + qStatus = ixQMgrNotificationDisable( + IX_ETH_ACC_PORT_TO_RX_FREE_Q_ID(portId)); + } + IX_ETH_ACC_DATA_PLANE_UNLOCK(lockVal); + break; + } + } + while (--maxQWritesToPerform); + } +} +/** + * @fn Tx queue low event handler + * + */ +void +ixEthTxFrameQMCallback(IxQMgrQId qId, IxQMgrCallbackId callbackId) +{ + IxEthAccPortId portId = (IxEthAccPortId) callbackId; + int lockVal; + UINT32 maxQWritesToPerform = IX_ETH_ACC_MAX_TX_FRAME_TX_CONSUME_PER_CALLBACK; + IX_STATUS qStatus = IX_SUCCESS; + IxEthAccTxPriority highestPriority; + + + /* + * We have reached a low threshold on the Tx Q, and are being asked to + * supply a buffer for transmission from our S/W TX queues + */ + TX_STATS_INC(portId,txLowThreshCallback); + + /* + * Get buffers from approprite Q. + */ + +#ifndef NDEBUG + if (!IX_ETH_ACC_IS_PORT_VALID(portId)) + { + ixEthAccDataStats.unexpectedError++; + IX_ETH_ACC_FATAL_LOG( + "ixEthTxFrameQMCallback:Error: Invalid Port 0x%08X\n", + portId, 0, 0, 0, 0, 0); + return; + } +#endif + + do + { + /* + * Consume Q entries. - Note Q contains Physical addresss, + * and have already been flushed to memory, + * and endianess already sone if required. + */ + + IX_ETH_ACC_DATA_PLANE_LOCK(lockVal); + + if(ixEthAccTxSwQHighestPriorityGet(portId, &highestPriority) == + IX_ETH_ACC_FAIL) + { + /* + * No more entries in s/w Q. + * Turn off Q callback indication + */ + qStatus = ixQMgrNotificationDisable( + IX_ETH_ACC_PORT_TO_TX_Q_ID(portId)); + + IX_ETH_ACC_DATA_PLANE_UNLOCK(lockVal); + + if (qStatus != IX_SUCCESS) + { + ixEthAccDataStats.unexpectedError++; + IX_ETH_ACC_FATAL_LOG( + "ixEthTxFrameQMCallback:Error: unexpected QM status 0x%08X\n", + qStatus, 0, 0, 0, 0, 0); + } + + return; + } + else + { + IX_ETH_ACC_DATA_PLANE_UNLOCK(lockVal); + if (ixEthAccTxFromSwQ(portId,highestPriority)!=IX_SUCCESS) + { + /* nothing left in the sw queue or the hw queues are + * full. There is no point to continue to drain the + * sw queues + */ + return; + } + } + } + while (--maxQWritesToPerform); +} + +/** + * @brief TxDone event handler + * + * Design note : while processing the entry X, entry X+1 is preloaded + * into memory to reduce the number of stall cycles + * + */ + +void +ixEthTxFrameDoneQMCallback(IxQMgrQId qId, IxQMgrCallbackId callbackId) +{ + IX_OSAL_MBUF *mbufPtr; + UINT32 qEntry; + UINT32 *qEntryPtr; + UINT32 txDoneQReadStatus; + UINT32 portId; + UINT32 npeId; + + /* + * Design note : entries are read in a static buffer, This buffer contains + * an extra entyry (which is zeroed by the compiler), so the loop will + * always terminate on a null entry, whatever the result of Burst read is. + */ + static UINT32 txDoneQEntry[IX_ETH_ACC_MAX_TX_FRAME_DONE_CONSUME_PER_CALLBACK + 1]; + + /* + * Indication that Tx frames have been transmitted from the NPE. + */ + + IX_ETH_ACC_STATS_INC(ixEthAccDataStats.txDoneCallbackCounter); + + do{ + qEntryPtr = txDoneQEntry; + txDoneQReadStatus = ixQMgrQBurstRead(IX_ETH_ACC_TX_FRAME_DONE_ETH_Q, + IX_ETH_ACC_MAX_TX_FRAME_DONE_CONSUME_PER_CALLBACK, + qEntryPtr); + +#ifndef NDEBUG + if (txDoneQReadStatus != IX_QMGR_Q_UNDERFLOW + && (txDoneQReadStatus != IX_SUCCESS)) + { + /*major error*/ + ixEthAccDataStats.unexpectedError++; + IX_ETH_ACC_FATAL_LOG( + "ixEthTxFrameDoneQMCallback:Error: %u\n", + (UINT32)txDoneQReadStatus, 0, 0, 0, 0, 0); + return; + } +#endif + + qEntry = *qEntryPtr; + + while(qEntry != 0) + { + mbufPtr = ixEthAccEntryFromQConvert(qEntry, + IX_ETHNPE_QM_Q_TXENET_ADDR_MASK); + +#ifndef NDEBUG + if (mbufPtr == NULL) + { + ixEthAccDataStats.unexpectedError++; + IX_ETH_ACC_FATAL_LOG( + "ixEthTxFrameDoneQMCallback:Error: Null Mbuf Ptr\n", + 0, 0, 0, 0, 0, 0); + return; + } +#endif + + /* endianness conversions and stats updates */ + ixEthAccMbufFromTxQ(mbufPtr); + + /* + * Get NPE id from message, then convert to portId. + */ + npeId = ((IX_ETHNPE_QM_Q_TXENETDONE_NPEID_MASK & + qEntry) >> + IX_ETHNPE_QM_Q_FIELD_NPEID_R); + portId = IX_ETH_ACC_NPE_TO_PORT_ID(npeId); + +#ifndef NDEBUG + /* Prudent to at least check the port is within range */ + if (portId >= IX_ETH_ACC_NUMBER_OF_PORTS) + { + ixEthAccDataStats.unexpectedError++; + IX_ETH_ACC_FATAL_LOG( + "ixEthTxFrameDoneQMCallback: Illegal port: %u\n", + (UINT32)portId, 0, 0, 0, 0, 0); + return; + } +#endif + + TX_STATS_INC(portId,txDoneClientCallback); + + /* + * Call user level callback. + */ + ixEthAccPortData[portId].ixEthAccTxData.txBufferDoneCallbackFn( + ixEthAccPortData[portId].ixEthAccTxData.txCallbackTag, + mbufPtr); + + /* move to next queue entry */ + qEntry = *(++qEntryPtr); + + } + } while( txDoneQReadStatus == IX_SUCCESS ); +} + +IX_ETH_ACC_PUBLIC +void ixEthAccDataPlaneShow(void) +{ + UINT32 numTx0Entries; + UINT32 numTx1Entries; + UINT32 numTxDoneEntries; + UINT32 numRxEntries; + UINT32 numRxFree0Entries; + UINT32 numRxFree1Entries; + UINT32 portId; +#ifdef __ixp46X + UINT32 numTx2Entries; + UINT32 numRxFree2Entries; +#endif +#ifndef NDEBUG + UINT32 priority; + UINT32 numBuffersInRx=0; + UINT32 numBuffersInTx=0; + UINT32 numBuffersInSwQ=0; + UINT32 totalBuffers=0; + UINT32 rxFreeCallbackCounter = 0; + UINT32 txCallbackCounter = 0; +#endif + UINT32 key; + + /* snapshot of stats */ + IxEthAccTxDataStats tx[IX_ETH_ACC_NUMBER_OF_PORTS]; + IxEthAccRxDataStats rx[IX_ETH_ACC_NUMBER_OF_PORTS]; + IxEthAccDataPlaneStats stats; + + if (!IX_ETH_ACC_IS_SERVICE_INITIALIZED()) + { + return; + } + + /* get a reliable snapshot */ + key = ixOsalIrqLock(); + + numTx0Entries = 0; + ixQMgrQNumEntriesGet(IX_ETH_ACC_TX_FRAME_ENET0_Q, &numTx0Entries); + numTx1Entries = 0; + ixQMgrQNumEntriesGet(IX_ETH_ACC_TX_FRAME_ENET1_Q, &numTx1Entries); + numTxDoneEntries = 0; + ixQMgrQNumEntriesGet( IX_ETH_ACC_TX_FRAME_DONE_ETH_Q, &numTxDoneEntries); + numRxEntries = 0; + ixEthAccQMgrRxQEntryGet(&numRxEntries); + numRxFree0Entries = 0; + ixQMgrQNumEntriesGet(IX_ETH_ACC_RX_FREE_BUFF_ENET0_Q, &numRxFree0Entries); + numRxFree1Entries = 0; + ixQMgrQNumEntriesGet(IX_ETH_ACC_RX_FREE_BUFF_ENET1_Q, &numRxFree1Entries); + +#ifdef __ixp46X + numTx2Entries = 0; + ixQMgrQNumEntriesGet(IX_ETH_ACC_TX_FRAME_ENET2_Q, &numTx2Entries); + numRxFree2Entries = 0; + ixQMgrQNumEntriesGet(IX_ETH_ACC_RX_FREE_BUFF_ENET2_Q, &numRxFree2Entries); +#endif + + for(portId=IX_ETH_PORT_1; portId < IX_ETH_ACC_NUMBER_OF_PORTS; portId++) + { + memcpy(&tx[portId], + &ixEthAccPortData[portId].ixEthAccTxData.stats, + sizeof(tx[portId])); + memcpy(&rx[portId], + &ixEthAccPortData[portId].ixEthAccRxData.stats, + sizeof(rx[portId])); + } + memcpy(&stats, &ixEthAccDataStats, sizeof(stats)); + + ixOsalIrqUnlock(key); + +#ifdef NDEBUG + printf("Detailed statistics collection not supported in this load\n"); +#endif + + /* print snapshot */ + for(portId=0; portId < IX_ETH_ACC_NUMBER_OF_PORTS; portId++) + { + /* If not IXP42X A0 stepping, proceed to check for existence of coprocessors */ + if ((IX_FEATURE_CTRL_SILICON_TYPE_A0 != + (ixFeatureCtrlProductIdRead() & IX_FEATURE_CTRL_SILICON_STEPPING_MASK)) + || (IX_FEATURE_CTRL_DEVICE_TYPE_IXP42X != ixFeatureCtrlDeviceRead ())) + { + if ((IX_ETH_PORT_1 == portId) && + (ixFeatureCtrlComponentCheck(IX_FEATURECTRL_ETH0) == + IX_FEATURE_CTRL_COMPONENT_DISABLED)) + { + continue ; + } + if ((IX_ETH_PORT_2 == portId) && + (ixFeatureCtrlComponentCheck(IX_FEATURECTRL_ETH1) == + IX_FEATURE_CTRL_COMPONENT_DISABLED)) + { + continue ; + } + if ((IX_ETH_PORT_3 == portId) && + (ixFeatureCtrlComponentCheck(IX_FEATURECTRL_NPEA_ETH) == + IX_FEATURE_CTRL_COMPONENT_DISABLED)) + { + continue ; + } + } + + printf("PORT %u --------------------------------\n", + portId); +#ifndef NDEBUG + printf("Tx Done Frames : %u\n", + tx[portId].txDoneClientCallback + + tx[portId].txDoneSwQDuringDisable + + tx[portId].txDoneDuringDisable); + printf("Tx Frames : %u\n", + tx[portId].txQOK + tx[portId].txQDelayed); + printf("Tx H/W Q Added OK : %u\n", + tx[portId].txQOK); + printf("Tx H/W Q Delayed : %u\n", + tx[portId].txQDelayed); + printf("Tx From S/W Q Added OK : %u\n", + tx[portId].txFromSwQOK); + printf("Tx From S/W Q Delayed : %u\n", + tx[portId].txFromSwQDelayed); + printf("Tx Overflow : %u\n", + tx[portId].txOverflow); + printf("Tx Mutual Lock : %u\n", + tx[portId].txLock); + printf("Tx Late Ntf Enabled : %u\n", + tx[portId].txLateNotificationEnabled); + printf("Tx Low Thresh CB : %u\n", + tx[portId].txLowThreshCallback); + printf("Tx Done from H/W Q (Disable) : %u\n", + tx[portId].txDoneDuringDisable); + printf("Tx Done from S/W Q (Disable) : %u\n", + tx[portId].txDoneSwQDuringDisable); + for (priority = IX_ETH_ACC_TX_PRIORITY_0; + priority <= IX_ETH_ACC_TX_PRIORITY_7; + priority++) + { + if (tx[portId].txPriority[priority]) + { + printf("Tx Priority %u : %u\n", + priority, + tx[portId].txPriority[priority]); + } + } +#endif + printf("Tx unexpected errors : %u (should be 0)\n", + tx[portId].txUnexpectedError); + +#ifndef NDEBUG + printf("Rx Frames : %u\n", + rx[portId].rxFrameClientCallback + + rx[portId].rxSwQDuringDisable+ + rx[portId].rxDuringDisable); + printf("Rx Free Replenish : %u\n", + rx[portId].rxFreeRepOK + rx[portId].rxFreeRepDelayed); + printf("Rx Free H/W Q Added OK : %u\n", + rx[portId].rxFreeRepOK); + printf("Rx Free H/W Q Delayed : %u\n", + rx[portId].rxFreeRepDelayed); + printf("Rx Free From S/W Q Added OK : %u\n", + rx[portId].rxFreeRepFromSwQOK); + printf("Rx Free From S/W Q Delayed : %u\n", + rx[portId].rxFreeRepFromSwQDelayed); + printf("Rx Free Overflow : %u\n", + rx[portId].rxFreeOverflow); + printf("Rx Free Mutual Lock : %u\n", + rx[portId].rxFreeLock); + printf("Rx Free Late Ntf Enabled : %u\n", + rx[portId].rxFreeLateNotificationEnabled); + printf("Rx Free Low CB : %u\n", + rx[portId].rxFreeLowCallback); + printf("Rx From H/W Q (Disable) : %u\n", + rx[portId].rxDuringDisable); + printf("Rx From S/W Q (Disable) : %u\n", + rx[portId].rxSwQDuringDisable); + printf("Rx unlearned Mac Address : %u\n", + rx[portId].rxUnlearnedMacAddress); + printf("Rx Filtered (Rx => RxFree) : %u\n", + rx[portId].rxFiltered); + + for (priority = IX_ETH_ACC_TX_PRIORITY_0; + priority <= IX_ETH_ACC_TX_PRIORITY_7; + priority++) + { + if (rx[portId].rxPriority[priority]) + { + printf("Rx Priority %u : %u\n", + priority, + rx[portId].rxPriority[priority]); + } + } +#endif + printf("Rx unexpected errors : %u (should be 0)\n", + rx[portId].rxUnexpectedError); + +#ifndef NDEBUG + numBuffersInTx = tx[portId].txQOK + + tx[portId].txQDelayed - + tx[portId].txDoneClientCallback - + tx[portId].txDoneSwQDuringDisable - + tx[portId].txDoneDuringDisable; + + printf("# Tx Buffers currently for transmission : %u\n", + numBuffersInTx); + + numBuffersInRx = rx[portId].rxFreeRepOK + + rx[portId].rxFreeRepDelayed - + rx[portId].rxFrameClientCallback - + rx[portId].rxSwQDuringDisable - + rx[portId].rxDuringDisable; + + printf("# Rx Buffers currently for reception : %u\n", + numBuffersInRx); + + totalBuffers += numBuffersInRx + numBuffersInTx; +#endif + } + + printf("---------------------------------------\n"); + +#ifndef NDEBUG + printf("\n"); + printf("Mbufs :\n"); + printf("Tx Unchained mbufs : %u\n", + stats.unchainedTxMBufs); + printf("Tx Chained bufs : %u\n", + stats.chainedTxMBufs); + printf("TxDone Unchained mbufs : %u\n", + stats.unchainedTxDoneMBufs); + printf("TxDone Chained bufs : %u\n", + stats.chainedTxDoneMBufs); + printf("RxFree Unchained mbufs : %u\n", + stats.unchainedRxFreeMBufs); + printf("RxFree Chained bufs : %u\n", + stats.chainedRxFreeMBufs); + printf("Rx Unchained mbufs : %u\n", + stats.unchainedRxMBufs); + printf("Rx Chained bufs : %u\n", + stats.chainedRxMBufs); + + printf("\n"); + printf("Software queue usage :\n"); + printf("Buffers added to S/W Q : %u\n", + stats.addToSwQ); + printf("Buffers removed from S/W Q : %u\n", + stats.removeFromSwQ); + + printf("\n"); + printf("Hardware queues callbacks :\n"); + + for(portId=0; portId < IX_ETH_ACC_NUMBER_OF_PORTS; portId++) + { + rxFreeCallbackCounter += rx[portId].rxFreeLowCallback; + txCallbackCounter += tx[portId].txLowThreshCallback; + } + printf("Tx Done QM Callback invoked : %u\n", + stats.txDoneCallbackCounter); + printf("Tx QM Callback invoked : %u\n", + txCallbackCounter); + printf("Rx QM Callback invoked : %u\n", + stats.rxCallbackCounter); + printf("Rx QM Callback burst read : %u\n", + stats.rxCallbackBurstRead); + printf("Rx Free QM Callback invoked : %u\n", + rxFreeCallbackCounter); +#endif + printf("Unexpected errors in CB : %u (should be 0)\n", + stats.unexpectedError); + printf("\n"); + + printf("Hardware queues levels :\n"); + printf("Transmit Port 1 Q : %u \n",numTx0Entries); + printf("Transmit Port 2 Q : %u \n",numTx1Entries); +#ifdef __ixp46X + printf("Transmit Port 3 Q : %u \n",numTx2Entries); +#endif + printf("Transmit Done Q : %u \n",numTxDoneEntries); + printf("Receive Q : %u \n",numRxEntries); + printf("Receive Free Port 1 Q : %u \n",numRxFree0Entries); + printf("Receive Free Port 2 Q : %u \n",numRxFree1Entries); +#ifdef __ixp46X + printf("Receive Free Port 3 Q : %u \n",numRxFree2Entries); +#endif + +#ifndef NDEBUG + printf("\n"); + printf("# Total Buffers accounted for : %u\n", + totalBuffers); + + numBuffersInSwQ = ixEthAccDataStats.addToSwQ - + ixEthAccDataStats.removeFromSwQ; + + printf(" Buffers in S/W Qs : %u\n", + numBuffersInSwQ); + printf(" Buffers in H/W Qs or NPEs : %u\n", + totalBuffers - numBuffersInSwQ); +#endif + + printf("Rx QoS Discipline : %s\n", + (ixEthAccDataInfo.schDiscipline == + FIFO_PRIORITY ) ? "Enabled" : "Disabled"); + + for(portId=0; portId < IX_ETH_ACC_NUMBER_OF_PORTS; portId++) + { + printf("Tx QoS Discipline port %u : %s\n", + portId, + (ixEthAccPortData[portId].ixEthAccTxData.schDiscipline == + FIFO_PRIORITY ) ? "Enabled" : "Disabled"); + } + printf("\n"); +} + + + + + |
