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Diffstat (limited to 'drivers/net/npe/include/IxAtmdAcc.h')
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diff --git a/drivers/net/npe/include/IxAtmdAcc.h b/drivers/net/npe/include/IxAtmdAcc.h deleted file mode 100644 index b37c615029..0000000000 --- a/drivers/net/npe/include/IxAtmdAcc.h +++ /dev/null @@ -1,1169 +0,0 @@ -/** - * @file IxAtmdAcc.h - * - * @date 07-Nov-2001 - * - * @brief IxAtmdAcc Public API - * - * This file contains the public API of IxAtmdAcc, related to the - * data functions of the 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 -- - */ - -/* ------------------------------------------------------ - Doxygen group definitions - ------------------------------------------------------ */ - -/** - * - * @defgroup IxAtmdAccAPI IXP400 ATM Driver Access (IxAtmdAcc) API - * - * @brief The public API for the IXP400 Atm Driver Data component - * - * IxAtmdAcc is the low level interface by which AAL0/AAL5 and - * OAM data gets transmitted to,and received from the Utopia bus. - * - * For AAL0/AAL5 services transmit and receive connections may - * be established independantly for unique combinations of - * port,VPI,and VCI. - * - * Two AAL0 services supporting 48 or 52 byte cell data are provided. - * Submitted AAL0 PDUs must be a multiple of the cell data size (48/52). - * AAL0_52 is a raw cell service the client must format - * the PDU with an ATM cell header (excluding HEC) at the start of - * each cell, note that AtmdAcc does not validate the cell headers in - * a submitted PDU. - * - * OAM cells cannot be received over the AAL0 service but instead - * are received over a dedicated OAM service. - * - * For the OAM service an "OAM Tx channel" may be enabled for a port - * by establishing a single dedicated OAM Tx connection on that port. - * A single "OAM Rx channel" for all ports may be enabled by - * establishing a dedicated OAM Rx connection. - * - * The OAM service allows buffers containing 52 byte OAM F4/F5 cells - * to be transmitted and received over the dedicated OAM channels. - * HEC is appended/removed, and CRC-10 performed by the NPE. The OAM - * service offered by AtmdAcc is a raw cell transport service. - * It is assumed that ITU I.610 procedures that make use of this - * service are implemented above AtmdAcc. - * - * Note that the dedicated OAM connections are established on - * reserved VPI,VCI, and (in the case of Rx) port values defined below. - * These values are used purely to descriminate the dedicated OAM channels - * and do not identify a particular OAM F4/F5 flow. F4/F5 flows may be - * realised for particluar VPI/VCIs by manipulating the VPI,VCI - * fields of the ATM cell headers of cells in the buffers passed - * to AtmdAcc. Note that AtmdAcc does not validate the cell headers - * in a submitted OAM PDU. - * - * - * - * This part is related to the User datapath processing - * - * @{ - */ - -#ifndef IXATMDACC_H -#define IXATMDACC_H - -#include "IxAtmTypes.h" - -/* ------------------------------------------------------ - AtmdAcc Data Types definition - ------------------------------------------------------ */ - -/** - * - * @ingroup IxAtmdAccAPI - * - * @def IX_ATMDACC_WARNING - * - * @brief Warning return code - * - * This constant is used to tell IxAtmDAcc user about a special case. - * - */ -#define IX_ATMDACC_WARNING 2 - -/** - * - * @ingroup IxAtmdAccAPI - * - * @def IX_ATMDACC_BUSY - * - * @brief Busy return code - * - * This constant is used to tell IxAtmDAcc user that the request - * is correct, but cannot be processed because the IxAtmAcc resources - * are already used. The user has to retry its request later - * - */ -#define IX_ATMDACC_BUSY 3 - -/** - * - * @ingroup IxAtmdAccAPI - * - * @def IX_ATMDACC_RESOURCES_STILL_ALLOCATED - * - * @brief Disconnect return code - * - * This constant is used to tell IxAtmDAcc user that the disconnect - * functions are not complete because the resources used by the driver - * are not yet released. The user has to retry the disconnect call - * later. - * - */ -#define IX_ATMDACC_RESOURCES_STILL_ALLOCATED 4 - -/** - * - * @ingroup IxAtmdAccAPI - * - * @def IX_ATMDACC_DEFAULT_REPLENISH_COUNT - * - * @brief Default resources usage for RxVcFree replenish mechanism - * - * This constant is used to tell IxAtmDAcc to allocate and use - * the minimum of resources for rx free replenish. - * - * @sa ixAtmdAccRxVcConnect - */ -#define IX_ATMDACC_DEFAULT_REPLENISH_COUNT 0 - - -/** - * @ingroup IxAtmdAccAPI - * - * @def IX_ATMDACC_OAM_TX_VPI - * - * @brief The reserved value used for the dedicated OAM - * Tx connection. This "well known" value is used by atmdAcc and - * its clients to dsicriminate the OAM channel, and should be chosen so - * that it does not coencide with the VPI value used in an AAL0/AAL5 connection. - * Any attempt to connect a service type other than OAM on this VPI will fail. - * - * - */ -#define IX_ATMDACC_OAM_TX_VPI 0 - -/** - * @ingroup IxAtmdAccAPI - * - * @def IX_ATMDACC_OAM_TX_VCI - * - * @brief The reserved value used for the dedicated OAM - * Tx connection. This "well known" value is used by atmdAcc and - * its clients to dsicriminate the OAM channel, and should be chosen so - * that it does not coencide with the VCI value used in an AAL0/AAL5 connection. - * Any attempt to connect a service type other than OAM on this VCI will fail. - */ -#define IX_ATMDACC_OAM_TX_VCI 0 - - - /** - * @ingroup IxAtmdAccAPI - * - * @def IX_ATMDACC_OAM_RX_PORT - * - * @brief The reserved dummy PORT used for all dedicated OAM - * Rx connections. Note that this is not a real port but must - * have a value that lies within the valid range of port values. - */ -#define IX_ATMDACC_OAM_RX_PORT IX_UTOPIA_PORT_0 - - /** - * @ingroup IxAtmdAccAPI - * - * @def IX_ATMDACC_OAM_RX_VPI - * - * @brief The reserved value value used for the dedicated OAM - * Rx connection. This value should be chosen so that it does not - * coencide with the VPI value used in an AAL0/AAL5 connection. - * Any attempt to connect a service type other than OAM on this VPI will fail. - */ -#define IX_ATMDACC_OAM_RX_VPI 0 - -/** - * @ingroup IxAtmdAccAPI - * - * @def IX_ATMDACC_OAM_RX_VCI - * - * @brief The reserved value value used for the dedicated OAM - * Rx connection. This value should be chosen so that it does not - * coencide with the VCI value used in an AAL0/AAL5 connection. - * Any attempt to connect a service type other than OAM on this VCI will fail. - */ -#define IX_ATMDACC_OAM_RX_VCI 0 - - -/** - * @enum IxAtmdAccPduStatus - * - * @ingroup IxAtmdAccAPI - * - * @brief IxAtmdAcc Pdu status : - * - * IxAtmdAccPduStatus is used during a RX operation to indicate - * the status of the received PDU - * - */ - -typedef enum -{ - IX_ATMDACC_AAL0_VALID = 0, /**< aal0 pdu */ - IX_ATMDACC_OAM_VALID, /**< OAM pdu */ - IX_ATMDACC_AAL2_VALID, /**< aal2 pdu @b reserved for future use */ - IX_ATMDACC_AAL5_VALID, /**< aal5 pdu complete and trailer is valid */ - IX_ATMDACC_AAL5_PARTIAL, /**< aal5 pdu not complete, trailer is missing */ - IX_ATMDACC_AAL5_CRC_ERROR, /**< aal5 pdu not complete, crc error/length error */ - IX_ATMDACC_MBUF_RETURN /**< empty buffer returned to the user */ -} IxAtmdAccPduStatus; - - -/** - * - * @enum IxAtmdAccAalType - * - * @ingroup IxAtmdAccAPI - * - * @brief IxAtmdAcc AAL Service Type : - * - * IxAtmdAccAalType defines the type of traffic to run on this VC - * - */ -typedef enum -{ - IX_ATMDACC_AAL5, /**< ITU-T AAL5 */ - IX_ATMDACC_AAL2, /**< ITU-T AAL2 @b reserved for future use */ - IX_ATMDACC_AAL0_48, /**< AAL0 48 byte payloads (cell header is added by NPE)*/ - IX_ATMDACC_AAL0_52, /**< AAL0 52 byte cell data (HEC is added by NPE) */ - IX_ATMDACC_OAM, /**< OAM cell transport service (HEC is added by NPE)*/ - IX_ATMDACC_MAX_SERVICE_TYPE /**< not a service, used for parameter validation */ -} IxAtmdAccAalType; - -/** - * - * @enum IxAtmdAccClpStatus - * - * @ingroup IxAtmdAccAPI - * - * @brief IxAtmdAcc CLP indication - * - * IxAtmdAccClpStatus defines the CLP status of the current PDU - * - */ -typedef enum -{ - IX_ATMDACC_CLP_NOT_SET = 0, /**< CLP indication is not set */ - IX_ATMDACC_CLP_SET = 1 /**< CLP indication is set */ -} IxAtmdAccClpStatus; - -/** - * @typedef IxAtmdAccUserId - * - * @ingroup IxAtmdAccAPI - * - * @brief User-supplied Id - * - * IxAtmdAccUserId is passed through callbacks and allows the - * IxAtmdAcc user to identify the source of a call back. The range of - * this user-owned Id is [0...2^32-1)]. - * - * The user provides this own Ids on a per-channel basis as a parameter - * in a call to @a ixAtmdAccRxVcConnect() or @a ixAtmdAccRxVcConnect() - * - * @sa ixAtmdAccRxVcConnect - * @sa ixAtmdAccTxVcConnect - * - */ -typedef unsigned int IxAtmdAccUserId; - -/* ------------------------------------------------------ - Part of the IxAtmdAcc interface related to RX traffic - ------------------------------------------------------ */ - -/** - * - * @ingroup IxAtmdAccAPI - * - * @brief Rx callback prototype - * - * IxAtmdAccRxVcRxCallback is the prototype of the Rx callback user - * function called once per PDU to pass a receive Pdu to a user on a - * partilcular connection. The callback is likely to push the mbufs - * to a protocol layer, and recycle the mbufs for a further use. - * - * @note -This function is called ONLY in the context of - * the @a ixAtmdAccRxDispatch() function - * - * @sa ixAtmdAccRxDispatch - * @sa ixAtmdAccRxVcConnect - * - * @param port @ref IxAtmLogicalPort [in] - the port on which this PDU was received - * a logical PHY port [@a IX_UTOPIA_PORT_0 .. @a IX_UTOPIA_MAX_PORTS - 1] - * @param userId @ref IxAtmdAccUserId [in] - user Id provided in the call - * to @a ixAtmdAccRxVcConnect() - * @param status @ref IxAtmdAccPduStatus [in] - an indication about the PDU validity. - * In the case of AAL0 the only possibile value is - * AAL0_VALID, in this case the client may optionally determine - * that an rx timeout occured by checking if the mbuf is - * compleletly or only partially filled, the later case - * indicating a timeout. - * In the case of OAM the only possible value is OAM valid. - * The status is set to @a IX_ATMDACC_MBUF_RETURN when - * the mbuf is released during a disconnect process. - * @param clp @ref IxAtmdAccClpStatus [in] - clp indication for this PDU. - * For AAL5/AAL0_48 this information - * is set if the clp bit of any rx cell is set - * For AAL0-52/OAM the client may inspect the CLP in individual - * cell headers in the PDU, and this parameter is set to 0. - * @param *mbufPtr @ref IX_OSAL_MBUF [in] - depending on the servive type a pointer to - * an mbuf (AAL5/AAL0/OAM) or mbuf chain (AAL5 only), - * that comprises the complete PDU data. - * - * This parameter is guaranteed not to be a null pointer. - * - */ -typedef void (*IxAtmdAccRxVcRxCallback) (IxAtmLogicalPort port, - IxAtmdAccUserId userId, - IxAtmdAccPduStatus status, - IxAtmdAccClpStatus clp, - IX_OSAL_MBUF * mbufPtr); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @brief Callback prototype for free buffer level is low. - * - * IxAtmdAccRxVcFreeLowCallback is the prototype of the user function - * which get called on a per-VC basis, when more mbufs are needed to - * continue the ATM data reception. This function is likely to supply - * more available mbufs by one or many calls to the replenish function - * @a ixAtmdAccRxVcFreeReplenish() - * - * This function is called when the number of available buffers for - * reception is going under the threshold level as defined - * in @a ixAtmdAccRxVcFreeLowCallbackRegister() - * - * This function is called inside an Qmgr dispatch context. No system - * resource or interrupt-unsafe feature should be used inside this - * callback. - * - * @sa ixAtmdAccRxVcFreeLowCallbackRegister - * @sa IxAtmdAccRxVcFreeLowCallback - * @sa ixAtmdAccRxVcFreeReplenish - * @sa ixAtmdAccRxVcFreeEntriesQuery - * @sa ixAtmdAccRxVcConnect - * - * @param userId @ref IxAtmdAccUserId [in] - user Id provided in the call - * to @a ixAtmdAccRxVcConnect() - * - * @return None - * - */ -typedef void (*IxAtmdAccRxVcFreeLowCallback) (IxAtmdAccUserId userId); - -/* ------------------------------------------------------ - Part of the IxAtmdAcc interface related to TX traffic - ------------------------------------------------------ */ - -/** - * - * @ingroup IxAtmdAccAPI - * - * @brief Buffer callback prototype. - * - * This function is called to relinguish ownership of a transmitted - * buffer chain to the user. - * - * @note -In the case of a chained mbuf the AmtdAcc component can - * chain many user buffers together and pass ownership to the user in - * one function call. - * - * @param userId @ref IxAtmdAccUserId [in] - user If provided at registration of this - * callback. - * @param mbufPtr @ref IX_OSAL_MBUF [in] - a pointer to mbufs or chain of mbufs and is - * guaranteed not to be a null pointer. - * - */ -typedef void (*IxAtmdAccTxVcBufferReturnCallback) (IxAtmdAccUserId userId, - IX_OSAL_MBUF * mbufPtr); - -/* ------------------------------------------------------ - Part of the IxAtmdAcc interface related to Initialisation - ------------------------------------------------------ */ - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccInit (void) - * - * @brief Initialise the IxAtmdAcc Component - * - * This function initialise the IxAtmdAcc component. This function shall - * be called before any other function of the API. Its role is to - * initialise all internal resources of the IxAtmdAcc component. - * - * The ixQmgr component needs to be initialized prior the use of - * @a ixAtmdAccInit() - * - * @param none - * - * Failing to initilialize the IxAtmdAcc API before any use of it will - * result in a failed status. - * If the specified component is not present, a success status will still be - * returned, however, a warning indicating the NPE to download to is not - * present will be issued. - * - * @return @li IX_SUCCESS initialisation is complete (in case of component not - * being present, a warning is clearly indicated) - * @return @li IX_FAIL unable to process this request either - * because this IxAtmdAcc is already initialised - * or some unspecified error has occrred. - */ -PUBLIC IX_STATUS ixAtmdAccInit (void); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccShow (void) - * - * @brief Show IxAtmdAcc configuration on a per port basis - * - * @param none - * - * @return none - * - * @note - Display use printf() and are redirected to stdout - */ -PUBLIC void -ixAtmdAccShow (void); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccStatsShow (void) - * - * @brief Show all IxAtmdAcc stats - * - * @param none - * - * @return none - * - * @note - Stats display use printf() and are redirected to stdout - */ -PUBLIC void -ixAtmdAccStatsShow (void); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccStatsReset (void) - * - * @brief Reset all IxAtmdAcc stats - * - * @param none - * - * @return none - * - */ -PUBLIC void -ixAtmdAccStatsReset (void); - -/* ------------------------------------------------------ - Part of the IxAtmdAcc interface related to RX traffic - ------------------------------------------------------ */ - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccRxVcConnect (IxAtmLogicalPort port, - unsigned int vpi, - unsigned int vci, - IxAtmdAccAalType aalServiceType, - IxAtmRxQueueId rxQueueId, - IxAtmdAccUserId userCallbackId, - IxAtmdAccRxVcRxCallback rxCallback, - unsigned int minimumReplenishCount, - IxAtmConnId * connIdPtr, - IxAtmNpeRxVcId * npeVcIdPtr ) - * - * @brief Connect to a Aal Pdu receive service for a particular - * port/vpi/vci, and service type. - * - * This function allows a user to connect to an Aal5/Aal0/OAM Pdu receive service - * for a particular port/vpi/vci. It registers the callback and allocates - * internal resources and a Connection Id to be used in further API calls - * related to this VCC. - * - * The function will setup VC receive service on the specified rx queue. - * - * This function is blocking and makes use internal locks, and hence - * should not be called from an interrupt context. - * - * On return from @a ixAtmdAccRxVcConnect() with a failure status, the - * connection Id parameter is unspecified. Its value cannot be used. - * A connId is the reference by which IxAtmdAcc refers to a - * connected VC. This identifier is the result of a succesful call - * to a connect function. This identifier is invalid after a - * sucessful call to a disconnect function. - * - * Calling this function for the same combination of Vpi, Vci and more - * than once without calling @a ixAtmdAccRxVcTryDisconnect() will result in a - * failure status. - * - * If this function returns success the user should supply receive - * buffers by calling @a ixAtmdAccRxVcFreeReplenish() and then call - * @a ixAtmdAccRxVcEnable() to begin receiving pdus. - * - * There is a choice of two receive Qs on which the VC pdus could be - * receive. The user must associate the VC with one of these. Essentially - * having two qs allows more flexible system configuration such as have - * high prioriy traffic on one q (e.g. voice) and low priority traffic on - * the other (e.g. data). The high priority Q could be serviced in - * preference to the low priority Q. One queue may be configured to be - * serviced as soon as there is traffic, the other queue may be configured - * to be serviced by a polling mechanism running at idle time. - * - * Two AAL0 services supporting 48 or 52 byte cell data are provided. - * Received AAL0 PDUs will be be a multiple of the cell data size (48/52). - * AAL0_52 is a raw cell service and includes an ATM cell header - * (excluding HEC) at the start of each cell. - * - * A single "OAM Rx channel" for all ports may be enabled by - * establishing a dedicated OAM Rx connection. - * - * The OAM service allows buffers containing 52 byte OAM F4/F5 cells - * to be transmitted and received over the dedicated OAM channels. - * HEC is appended/removed, and CRC-10 performed by the NPE. The OAM - * service offered by AtmdAcc is a raw cell transport service. - * It is assumed that ITU I.610 procedures that make use of this - * service are implemented above AtmdAcc. - * - * Note that the dedicated OAM connections are established on - * reserved VPI,VCI, and (in the case of Rx) port values. - * These values are used purely to descriminate the dedicated OAM channels - * and do not identify a particular OAM F4/F5 flow. F4/F5 flows may be - * realised for particluar VPI/VCIs by manipulating the VPI,VCI - * fields of the ATM cell headers of cells in the buffers passed - * to AtmdAcc. - * - * Calling this function prior to enable the port will fail. - * - * @sa ixAtmdAccRxDispatch - * @sa ixAtmdAccRxVcEnable - * @sa ixAtmdAccRxVcDisable - * @sa ixAtmdAccRxVcTryDisconnect - * @sa ixAtmdAccPortEnable - * - * @param port @ref IxAtmLogicalPort [in] - VC identification : logical PHY port - * [@a IX_UTOPIA_PORT_0 .. @a IX_UTOPIA_MAX_PORTS - 1] - * @param vpi unsigned int [in] - VC identification : ATM Vpi [0..255] or IX_ATMDACC_OAM_VPI - * @param vci unsigned int [in] - VC identification : ATM Vci [0..65535] or IX_ATMDACC_OAM_VCI - * @param aalServiceType @ref IxAtmdAccAalType [in] - type of service: AAL5, AAL0_48, AAL0_52, or OAM - * @param rxQueueId @ref IxAtmRxQueueId [in] - this identifieds which of two Qs the VC - * should use.when icoming traffic is processed - * @param userCallbackId @ref IxAtmdAccUserId [in] - user Id used later as a parameter to - * the supplied rxCallback. - * @param rxCallback [in] @ref IxAtmdAccRxVxRxCallback - function called when mbufs are received. - * This parameter cannot be a null pointer. - * @param bufferFreeCallback [in] - function to be called to return - * ownership of buffers to IxAtmdAcc user. - * @param minimumReplenishCount unsigned int [in] - For AAL5/AAL0 the number of free mbufs - * to be used with this channel. Use a high number when the expected traffic - * rate on this channel is high, or when the user's mbufs are small, or when - * the RxVcFreeLow Notification has to be invoked less often. When this - * value is IX_ATMDACC_DEFAULT_REPLENISH_COUNT, the minimum of - * resources will be used. Depending on traffic rate, pdu - * size and mbuf size, rxfree queue size, polling/interrupt rate, this value may - * require to be replaced by a different value in the range 1-128 - * For OAM the rxFree queue size is fixed by atmdAcc and this parameter is ignored. - * @param connIdPtr @ref IxAtmConnId [out] - pointer to a connection Id - * This parameter cannot be a null pointer. - * @param npeVcIdPtr @ref IxAtmNpeRxVcId [out] - pointer to an npe Vc Id - * This parameter cannot be a null pointer. - * - * @return @li IX_SUCCESS successful call to IxAtmdAccRxVcConnect - * @return @li IX_ATMDACC_BUSY cannot process this request : - * no VC is available - * @return @li IX_FAIL - * parameter error, - * VC already in use, - * attempt to connect AAL service on reserved OAM VPI/VCI, - * attempt to connect OAM service on VPI/VCI other than the reserved OAM VPI/VCI, - * port is not initialised, - * or some other error occurs during processing. - * - */ -PUBLIC IX_STATUS ixAtmdAccRxVcConnect (IxAtmLogicalPort port, - unsigned int vpi, - unsigned int vci, - IxAtmdAccAalType aalServiceType, - IxAtmRxQueueId rxQueueId, - IxAtmdAccUserId userCallbackId, - IxAtmdAccRxVcRxCallback rxCallback, - unsigned int minimumReplenishCount, - IxAtmConnId * connIdPtr, - IxAtmNpeRxVcId * npeVcIdPtr ); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccRxVcFreeReplenish (IxAtmConnId connId, - IX_OSAL_MBUF * mbufPtr) - * - * @brief Provide free mbufs for data reception on a connection. - * - * This function provides mbufs for data reception by the hardware. This - * function needs to be called by the user on a regular basis to ensure - * no packet loss. Providing free buffers is a connection-based feature; - * each connection can have different requirements in terms of buffer size - * number of buffers, recycling rate. This function could be invoked from - * within the context of a @a IxAtmdAccRxVcFreeLowCallback() callback - * for a particular VC - * - * Mbufs provided through this function call can be chained. They will be - * unchained internally. A call to this function with chained mbufs or - * multiple calls with unchained mbufs are equivalent, but calls with - * unchained mbufs are more efficients. - * - * Mbufs provided to this interface need to be able to hold at least one - * full cell payload (48/52 bytes, depending on service type). - * Chained buffers with a size less than the size supported by the hardware - * will be returned through the rx callback provided during the connect step. - * - * Failing to invoke this function prior to enabling the RX traffic - * can result in packet loss. - * - * This function is not reentrant for the same connId. - * - * This function does not use system resources and can be - * invoked from an interrupt context. - * - * @note - Over replenish is detected, and extra mbufs are returned through - * the rx callback provided during the connect step. - * - * @note - Mbuf provided to the replenish function should have a length greater or - * equal to 48/52 bytes according to service type. - * - * @note - The memory cache of mMbuf payload should be invalidated prior to Mbuf - * submission. Flushing the Mbuf headers is handled by IxAtmdAcc. - * - * @note - When a chained mbuf is provided, this function process the mbufs - * up to the hardware limit and invokes the user-supplied callback - * to release extra buffers. - * - * @sa ixAtmdAccRxVcFreeLowCallbackRegister - * @sa IxAtmdAccRxVcFreeLowCallback - * @sa ixAtmdAccRxVcConnect - * - * @param connId @ref IxAtmConnId [in] - connection Id as returned from a succesfull call to - * @a IxAtmdAccRxVcConnect() - * @param mbufPtr @ref IX_OSAL_MBUF [in] - pointer to a mbuf structure to be used for data - * reception. The mbuf pointed to by this parameter can be chained - * to an other mbuf. - * - * @return @li IX_SUCCESS successful call to @a ixAtmdAccRxVcFreeReplenish() - * and the mbuf is now ready to use for incoming traffic. - * @return @li IX_ATMDACC_BUSY cannot process this request because - * the max number of outstanding free buffers has been reached - * or the internal resources have exhausted for this VC. - * The user is responsible for retrying this request later. - * @return @li IX_FAIL cannot process this request because of parameter - * errors or some unspecified internal error has occurred. - * - * @note - It is not always guaranteed the replenish step to be as fast as the - * hardware is consuming Rx Free mbufs. There is nothing in IxAtmdAcc to - * guarantee that replenish reaches the rxFree threshold level. If the - * threshold level is not reached, the next rxFree low notification for - * this channel will not be triggered. - * The preferred ways to replenish can be as follows (depending on - * applications and implementations) : - * @li Replenish in a rxFree low notification until the function - * ixAtmdAccRxVcFreeReplenish() returns IX_ATMDACC_BUSY - * @li Query the queue level using @sa ixAtmdAccRxVcFreeEntriesQuery, then - * , replenish using @a ixAtmdAccRxVcFreeReplenish(), then query the queue - * level again, and replenish if the threshold is still not reached. - * @li Trigger replenish from an other event source and use rxFree starvation - * to throttle the Rx traffic. - * - */ -PUBLIC IX_STATUS ixAtmdAccRxVcFreeReplenish (IxAtmConnId connId, - IX_OSAL_MBUF * mbufPtr); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccRxVcFreeLowCallbackRegister (IxAtmConnId connId, - unsigned int numberOfMbufs, - IxAtmdAccRxVcFreeLowCallback callback) - * - * @brief Configure the RX Free threshold value and register a callback - * to handle threshold notifications. - * - * The function ixAtmdAccRxVcFreeLowCallbackRegister sets the threshold value for - * a particular RX VC. When the number of buffers reaches this threshold - * the callback is invoked. - * - * This function should be called once per VC before RX traffic is - * enabled.This function will fail if the curent level of the free buffers - * is equal or less than the threshold value. - * - * @sa ixAtmdAccRxVcFreeLowCallbackRegister - * @sa IxAtmdAccRxVcFreeLowCallback - * @sa ixAtmdAccRxVcFreeReplenish - * @sa ixAtmdAccRxVcFreeEntriesQuery - * @sa ixAtmdAccRxVcConnect - * - * @param connId @ref IxAtmConnId [in] - connection Id as resulted from a succesfull call - * to @a IxAtmdAccRxVcConnect() - * @param numberOfMbufs unsigned int [in] - threshold number of buffers. This number - * has to be a power of 2, one of the values 0,1,2,4,8,16,32.... - * The maximum value cannot be more than half of the rxFree queue - * size (which can be retrieved using @a ixAtmdAccRxVcFreeEntriesQuery() - * before any use of the @a ixAtmdAccRxVcFreeReplenish() function) - * @param callback @ref IxAtmdAccRxVcFreeLowCallback [in] - function telling the user that the number of - * free buffers has reduced to the threshold value. - * - * @return @li IX_SUCCESS Threshold set successfully. - * @return @li IX_FAIL parameter error or the current number of free buffers - * is less than or equal to the threshold supplied or some - * unspecified error has occrred. - * - * @note - the callback will be called when the threshold level will drop from - * exactly (numberOfMbufs + 1) to (numberOfMbufs). - * - */ -PUBLIC IX_STATUS ixAtmdAccRxVcFreeLowCallbackRegister (IxAtmConnId connId, - unsigned int numberOfMbufs, - IxAtmdAccRxVcFreeLowCallback callback); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccRxVcFreeEntriesQuery (IxAtmConnId connId, - unsigned int *numberOfMbufsPtr) - * - * @brief Get the number of rx mbufs the system can accept to replenish the - * the rx reception mechanism on a particular channel - * - * The ixAtmdAccRxVcFreeEntriesQuery function is used to retrieve the current - * number of available mbuf entries for reception, on a per-VC basis. This - * function can be used to know the number of mbufs which can be provided - * using @a ixAtmdAccRxVcFreeReplenish(). - * - * This function can be used from a timer context, or can be associated - * with a threshold event, or can be used inside an active polling - * mechanism which is under user control. - * - * This function is reentrant and does not use system resources and can - * be invoked from an interrupt context. - * - * @param connId @ref IxAtmConnId [in] - connection Id as resulted from a succesfull call - * to @a IxAtmdAccRxVcConnect() - * @param numberOfMbufsPtr unsigned int [out] - Pointer to the number of available entries. - * . This parameter cannot be a null pointer. - * - * @return @li IX_SUCCESS the current number of mbufs not yet used for incoming traffic - * @return @li IX_FAIL invalid parameter - * - * @sa ixAtmdAccRxVcFreeReplenish - * - */ -PUBLIC IX_STATUS ixAtmdAccRxVcFreeEntriesQuery (IxAtmConnId connId, - unsigned int *numberOfMbufsPtr); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccRxVcEnable (IxAtmConnId connId) - * - * @brief Start the RX service on a VC. - * - * This functions kicks-off the traffic reception for a particular VC. - * Once invoked, incoming PDUs will be made available by the hardware - * and are eventually directed to the @a IxAtmdAccRxVcRxCallback() callback - * registered for the connection. - * - * If the traffic is already running, this function returns IX_SUCCESS. - * This function can be invoked many times. - * - * IxAtmdAccRxVcFreeLowCallback event will occur only after - * @a ixAtmdAccRxVcEnable() function is invoked. - * - * Before using this function, the @a ixAtmdAccRxVcFreeReplenish() function - * has to be used to replenish the RX Free queue. If not, incoming traffic - * may be discarded.and in the case of interrupt driven reception the - * @a IxAtmdAccRxVcFreeLowCallback() callback may be invoked as a side effect - * during a replenish action. - * - * This function is not reentrant and should not be used inside an - * interrupt context. - * - * For an VC connection this function can be called after a call to - * @a ixAtmdAccRxVcDisable() and should not be called after - * @a ixAtmdAccRxVcTryDisconnect() - * - * @sa ixAtmdAccRxVcDisable - * @sa ixAtmdAccRxVcConnect - * @sa ixAtmdAccRxVcFreeReplenish - * - * @param connId @ref IxAtmConnId [in] - connection Id as resulted from a succesfull call - * to @a IxAtmdAccRxVcConnect() - * - * @return @li IX_SUCCESS successful call to ixAtmdAccRxVcEnable - * @return @li IX_ATMDACC_WARNING the channel is already enabled - * @return @li IX_FAIL invalid parameters or some unspecified internal - * error occured. - * - */ -PUBLIC IX_STATUS ixAtmdAccRxVcEnable (IxAtmConnId connId); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccRxVcDisable (IxAtmConnId connId) - * - * @brief Stop the RX service on a VC. - * - * This functions stops the traffic reception for a particular VC connection. - * - * Once invoked, incoming Pdus are discarded by the hardware. Any Pdus - * pending will be freed to the user - * - * Hence once this function returns no more receive callbacks will be - * called for that VC. However, buffer free callbacks will be invoked - * until such time as all buffers supplied by the user have been freed - * back to the user - * - * Calling this function doe not invalidate the connId. - * @a ixAtmdAccRxVcEnable() can be invoked to enable Pdu reception again. - * - * If the traffic is already stopped, this function returns IX_SUCCESS. - * - * This function is not reentrant and should not be used inside an - * interrupt context. - * - * @sa ixAtmdAccRxVcConnect - * @sa ixAtmdAccRxVcEnable - * @sa ixAtmdAccRxVcDisable - * - * @param connId @ref IxAtmConnId [in] - connection Id as resulted from a succesfull call to @a - * IxAtmdAccRxVcConnect() - * - * @return @li IX_SUCCESS successful call to @a ixAtmdAccRxVcDisable(). - * @return @li IX_ATMDACC_WARNING the channel is already disabled - * @return @li IX_FAIL invalid parameters or some unspecified internal error occured - * - */ -PUBLIC IX_STATUS ixAtmdAccRxVcDisable (IxAtmConnId connId); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccRxVcTryDisconnect (IxAtmConnId connId) - * - * @brief Disconnect a VC from the RX service. - * - * This function deregisters the VC and guarantees that all resources - * associated with this VC are free. After its execution, the connection - * Id is not available. - * - * This function will fail until such time as all resources allocated to - * the VC connection have been freed. The user is responsible to delay and - * call again this function many times until a success status is returned. - * - * This function needs internal locks and should not be called from an - * interrupt context - * - * @param connId @ref IxAtmConnId [in] - connection Id as resulted from a succesfull call to - * @a IxAtmdAccRxVcConnect() - * - * @return @li IX_SUCCESS successful call to ixAtmdAccRxVcDisable - * @return @li IX_ATMDACC_RESOURCES_STILL_ALLOCATED not all resources - * associated with the connection have been freed. - * @return @li IX_FAIL cannot process this request because of a parameter - * error - * - */ -PUBLIC IX_STATUS ixAtmdAccRxVcTryDisconnect (IxAtmConnId connId); - -/* ------------------------------------------------------ - Part of the IxAtmdAcc interface related to TX traffic - ------------------------------------------------------ */ - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccTxVcConnect (IxAtmLogicalPort port, - unsigned int vpi, - unsigned int vci, - IxAtmdAccAalType aalServiceType, - IxAtmdAccUserId userId, - IxAtmdAccTxVcBufferReturnCallback bufferFreeCallback, - IxAtmConnId * connIdPtr) - * - * @brief Connect to a Aal Pdu transmit service for a particular - * port/vpi/vci and service type. - * - * This function allows a user to connect to an Aal5/Aal0/OAM Pdu transmit service - * for a particular port/vpi/vci. It registers the callback and allocates - * internal resources and a Connection Id to be used in further API calls - * related to this VC. - * - * The function will setup VC transmit service on the specified on the - * specified port. A connId is the reference by which IxAtmdAcc refers to a - * connected VC. This identifier is the result of a succesful call - * to a connect function. This identifier is invalid after a - * sucessful call to a disconnect function. - * - * This function needs internal locks, and hence should not be called - * from an interrupt context. - * - * On return from @a ixAtmdAccTxVcConnect() with a failure status, the - * connection Id parameter is unspecified. Its value cannot be used. - * - * Calling this function for the same combination of port, Vpi, Vci and - * more than once without calling @a ixAtmdAccTxVcTryDisconnect() will result - * in a failure status. - * - * Two AAL0 services supporting 48 or 52 byte cell data are provided. - * Submitted AAL0 PDUs must be a multiple of the cell data size (48/52). - * AAL0_52 is a raw cell service the client must format - * the PDU with an ATM cell header (excluding HEC) at the start of - * each cell, note that AtmdAcc does not validate the cell headers in - * a submitted PDU. - * - * For the OAM service an "OAM Tx channel" may be enabled for a port - * by establishing a single dedicated OAM Tx connection on that port. - * - * The OAM service allows buffers containing 52 byte OAM F4/F5 cells - * to be transmitted and received over the dedicated OAM channels. - * HEC is appended/removed, and CRC-10 performed by the NPE. The OAM - * service offered by AtmdAcc is a raw cell transport service. - * It is assumed that ITU I.610 procedures that make use of this - * service are implemented above AtmdAcc. - * - * Note that the dedicated OAM connections are established on - * reserved VPI,VCI, and (in the case of Rx) port values. - * These values are used purely to descriminate the dedicated OAM channels - * and do not identify a particular OAM F4/F5 flow. F4/F5 flows may be - * realised for particluar VPI/VCIs by manipulating the VPI,VCI - * fields of the ATM cell headers of cells in the buffers passed - * to AtmdAcc. - * - * Calling this function before enabling the port will fail. - * - * @sa ixAtmdAccTxVcTryDisconnect - * @sa ixAtmdAccPortTxScheduledModeEnable - * @sa ixAtmdAccPortEnable - * - * @param port @ref IxAtmLogicalPort [in] - VC identification : logical PHY port - * [@a IX_UTOPIA_PORT_0 .. @a IX_UTOPIA_MAX_PORTS - 1] - * @param vpi unsigned int [in] - VC identification : ATM Vpi [0..255] or IX_ATMDACC_OAM_VPI - * @param vci unsigned int [in] - VC identification : ATM Vci [0..65535] or IX_ATMDACC_OAM_VCI - * @param aalServiceType @ref IxAtmdAccAalType [in] - type of service AAL5, AAL0_48, AAL0_52, or OAM - * @param userId @ref IxAtmdAccUserId [in] - user id to be used later during callbacks related - * to this channel - * @param bufferFreeCallback @ref IxAtmdAccTxVcBufferReturnCallback [in] - function called when mbufs - * transmission is complete. This parameter cannot be a null - * pointer. - * @param connIdPtr @ref IxAtmConnId [out] - Pointer to a connection Id. - * This parameter cannot be a null pointer. - * - * @return @li IX_SUCCESS successful call to @a IxAtmdAccRxVcConnect(). - * @return @li IX_ATMDACC_BUSY cannot process this request - * because no VC is available - * @return @li IX_FAIL - * parameter error, - * VC already in use, - * attempt to connect AAL service on reserved OAM VPI/VCI, - * attempt to connect OAM service on VPI/VCI other than the reserved OAM VPI/VCI, - * port is not initialised, - * or some other error occurs during processing. - * - * @note - Unscheduled mode is not supported in ixp425 1.0. Therefore, the - * function @a ixAtmdAccPortTxScheduledModeEnable() need to be called - * for this port before any establishing a Tx Connection - */ -PUBLIC IX_STATUS ixAtmdAccTxVcConnect (IxAtmLogicalPort port, - unsigned int vpi, - unsigned int vci, - IxAtmdAccAalType aalServiceType, - IxAtmdAccUserId userId, - IxAtmdAccTxVcBufferReturnCallback bufferFreeCallback, - IxAtmConnId * connIdPtr); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccTxVcPduSubmit (IxAtmConnId connId, - IX_OSAL_MBUF * mbufPtr, - IxAtmdAccClpStatus clp, - unsigned int numberOfCells) - * - * @brief Submit a Pdu for transmission on connection. - * - * A data user calls this function to submit an mbufs containing a Pdu - * to be transmitted. The buffer supplied can be chained and the Pdu it - * contains must be complete. - * - * The transmission behavior of this call depends on the operational mode - * of the port on which the connection is made. - * - * In unscheduled mode the mbuf will be submitted to the hardware - * immediately if sufficent resource is available. Otherwise the function - * will return failure. - * - * In scheduled mode the buffer is queued internally in IxAtmdAcc. The cell - * demand is made known to the traffic shaping entity. Cells from the - * buffers are MUXed onto the port some time later as dictated by the - * traffic shaping entity. The traffic shaping entity does this by sending - * transmit schedules to IxAtmdAcc via @a ixAtmdAccPortTxProcess() function call. - * - * Note that the dedicated OAM channel is scheduled just like any - * other channel. This means that any OAM traffic relating to an - * active AAL0/AAL5 connection will be scheduled independantly of the - * AAL0/AAL5 traffic for that connection. - * - * When transmission is complete, the TX Done mechanism will give the - * owmnership of these buffers back to the customer. The tx done mechanism - * must be in operation before transmission is attempted. - * - * For AAL0/OAM submitted AAL0 PDUs must be a multiple of the cell data - * size (48/52). AAL0_52 and OAM are raw cell services, and the client - * must format the PDU with an ATM cell header (excluding HEC) at the - * start of each cell, note that AtmdAcc does not validate the cell headers in - * a submitted PDU. - * - * - * @sa IxAtmdAccTxVcBufferReturnCallback - * @sa ixAtmdAccTxDoneDispatch - * - * @param connId @ref IxAtmConnId [in] - connection Id as resulted from a succesfull call to - * @a ixAtmdAccTxVcConnect() - * @param mbufPtr @ref IX_OSAL_MBUF [in] - pointer to a chained structure of mbufs to transmit. - * This parameter cannot be a null pointer. - * @param clp @ref IxAtmdAccClpStatus [in] - clp indication for this PDU. All cells of this pdu - * will be sent with the clp bit set - * @param numberOfCells unsigned int [in] - number of cells in the PDU. - * - * @return @li IX_SUCCESS successful call to @a ixAtmdAccTxVcPduSubmit() - * The pdu pointed by the mbufPtr parameter will be - * transmitted - * @return @li IX_ATMDACC_BUSY unable to process this request because - * internal resources are all used. The caller is responsible - * for retrying this request later. - * @return @li IX_FAIL unable to process this request because of error - * in the parameters (wrong connId supplied, - * or wrong mbuf pointer supplied), the total length of all buffers - * in the chain should be a multiple of the cell size - * ( 48/52 depending on the service type ), - * or unspecified error during processing - * - * @note - This function in not re-entrant for the same VC (e.g. : two - * thread cannot send PDUs for the same VC). But two threads can - * safely call this function with a different connection Id - * - * @note - In unscheduled mode, this function is not re-entrant on a per - * port basis. The size of pdus is limited to 8Kb. - * - * @note - 0-length mbufs should be removed from the chain before submission. - * The total length of the pdu (sdu + padding +trailer) has to be - * updated in the header of the first mbuf of a chain of mbufs. - * - * @note - Aal5 trailer information (UUI, CPI, SDU length) has to be supplied - * before submission. - * - * @note - The payload memory cache should be flushed, if needed, prior to - * transmission. Mbuf headers are flushed by IxAtmdAcc - * - * @note - This function does not use system resources and can be used - * inside an interrupt context - */ -PUBLIC IX_STATUS ixAtmdAccTxVcPduSubmit (IxAtmConnId connId, - IX_OSAL_MBUF * mbufPtr, - IxAtmdAccClpStatus clp, - unsigned int numberOfCells); - -/** - * - * @ingroup IxAtmdAccAPI - * - * @fn ixAtmdAccTxVcTryDisconnect (IxAtmConnId connId) - * - * @brief Disconnect from a Aal Pdu transmit service for a particular - * port/vpi/vci. - * - * This function deregisters the VC and guarantees that all resources - * associated with this VC are free. After its execution, the connection - * Id is not available. - * - * This function will fail until such time as all resources allocated to - * the VC connection have been freed. The user is responsible to delay - * and call again this function many times until a success status is - * returned. - * - * After its execution, the connection Id is not available. - * - * @param connId @ref IxAtmConnId [in] - connection Id as resulted from a succesfull call to - * @a ixAtmdAccTxVcConnect() - * - * @return @li IX_SUCCESS successful call to @a ixAtmdAccTxVcTryDisconnect() - * @return @li IX_ATMDACC_RESOURCES_STILL_ALLOCATED not all resources - * associated with the connection have been freed. This condition will - * disappear after Tx and TxDone is complete for this channel. - * @return @li IX_FAIL unable to process this request because of errors - * in the parameters (wrong connId supplied) - * - * @note - This function needs internal locks and should not be called - * from an interrupt context - * - * @note - If the @a IX_ATMDACC_RESOURCES_STILL_ALLOCATED error does not - * clear after a while, this may be linked to a previous problem - * of cell overscheduling. Diabling the port and retry a disconnect - * will free the resources associated with this channel. - * - * @sa ixAtmdAccPortTxProcess - * - */ -PUBLIC IX_STATUS ixAtmdAccTxVcTryDisconnect (IxAtmConnId connId); - -#endif /* IXATMDACC_H */ - -/** - * @} defgroup IxAtmdAccAPI - */ - - |
