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authorAlbert ARIBAUD <albert.u.boot@aribaud.net>2014-02-19 07:15:01 +0100
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2014-02-19 07:15:01 +0100
commita87a0ce7028d5371c81d77ba72c1ba43a1ca77bc (patch)
tree98bff4a88314611dc6f7afea5f88953309940a51 /drivers/net/npe/include/IxAtmSch.h
parentc4d376fd1c2bce8d64cec0431dd3f24957b6dec4 (diff)
parentf8d1086851409ee16344932ef367b8a05c365b09 (diff)
downloadblackbird-obmc-uboot-a87a0ce7028d5371c81d77ba72c1ba43a1ca77bc.tar.gz
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Merge branch 'u-boot-pxa/master' into 'u-boot-arm/master'
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-/**
- * @file IxAtmSch.h
- *
- * @date 23-NOV-2001
- *
- * @brief Header file for the IXP400 ATM Traffic Shaper
- *
- * This component demonstrates an ATM Traffic Shaper implementation. It
- * will perform shaping on upto 12 ports and total of 44 VCs accross all ports,
- * 32 are intended for AAL0/5 and 12 for OAM (1 per port).
- * The supported traffic types are;1 rt-VBR VC where PCR = SCR.
- * (Effectively CBR) and Up-to 44 VBR VCs.
- *
- * This component models the ATM ports and VCs and is capable of producing
- * a schedule of ATM cells per port which can be supplied to IxAtmdAcc
- * for execution on the data path.
- *
- * @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 --
- *
- * @sa IxAtmm.h
- *
- */
-
-/**
- * @defgroup IxAtmSch IXP400 ATM Transmit Scheduler (IxAtmSch) API
- *
- * @brief IXP400 ATM scheduler component Public API
- *
- * @{
- */
-
-#ifndef IXATMSCH_H
-#define IXATMSCH_H
-
-#include "IxOsalTypes.h"
-#include "IxAtmTypes.h"
-
-/*
- * #defines and macros used in this file.
- */
-
-/* Return codes */
-
-/**
- * @ingroup IxAtmSch
- *
- * @def IX_ATMSCH_RET_NOT_ADMITTED
- * @brief Indicates that CAC function has rejected VC registration due
- * to insufficient line capacity.
-*/
-#define IX_ATMSCH_RET_NOT_ADMITTED 2
-
-/**
- * @ingroup IxAtmSch
- *
- * @def IX_ATMSCH_RET_QUEUE_FULL
- * @brief Indicates that the VC queue is full, no more demand can be
- * queued at this time.
- */
-#define IX_ATMSCH_RET_QUEUE_FULL 3
-
-/**
- * @ingroup IxAtmSch
- *
- * @def IX_ATMSCH_RET_QUEUE_EMPTY
- * @brief Indicates that all VC queues on this port are empty and
- * therefore there are no cells to be scheduled at this time.
- */
-#define IX_ATMSCH_RET_QUEUE_EMPTY 4
-
-/*
- * Function declarations
- */
-
-/**
- * @ingroup IxAtmSch
- *
- * @fn ixAtmSchInit(void)
- *
- * @brief This function is used to initialize the ixAtmSch component. It
- * should be called before any other IxAtmSch API function.
- *
- * @param None
- *
- * @return
- * - <b>IX_SUCCESS :</b> indicates that
- * -# The ATM scheduler component has been successfully initialized.
- * -# The scheduler is ready to accept Port modelling requests.
- * - <b>IX_FAIL :</b> Some internal error has prevented the scheduler component
- * from initialising.
- */
-PUBLIC IX_STATUS
-ixAtmSchInit(void);
-
-/**
- * @ingroup IxAtmSch
- *
- * @fn ixAtmSchPortModelInitialize( IxAtmLogicalPort port,
- unsigned int portRate,
- unsigned int minCellsToSchedule)
- *
- * @brief This function shall be called first to initialize an ATM port before
- * any other ixAtmSch API calls may be made for that port.
- *
- * @param port @ref IxAtmLogicalPort [in] - The specific port to initialize. Valid
- * values range from 0 to IX_UTOPIA_MAX_PORTS - 1, representing a
- * maximum of IX_UTOPIA_MAX_PORTS possible ports.
- *
- * @param portRate unsigned int [in] - Value indicating the upstream capacity
- * of the indicated port. The value should be supplied in
- * units of ATM (53 bytes) cells per second.
- * A port rate of 800Kbits/s is the equivalent
- * of 1886 cells per second
- *
- * @param minCellsToSchedule unsigned int [in] - This parameter specifies the minimum
- * number of cells which the scheduler will put in a schedule
- * table for this port. This value sets the worst case CDVT for VCs
- * on this port i.e. CDVT = 1*minCellsToSchedule/portRate.
- * @return
- * - <b>IX_SUCCESS :</b> indicates that
- * -# The ATM scheduler has been successfully initialized.
- * -# The requested port model has been established.
- * -# The scheduler is ready to accept VC modelling requests
- * on the ATM port.
- * - <b>IX_FAIL :</b> indicates the requested port could not be
- * initialized. */
-PUBLIC IX_STATUS
-ixAtmSchPortModelInitialize( IxAtmLogicalPort port,
- unsigned int portRate,
- unsigned int minCellsToSchedule);
-
-/**
- * @ingroup IxAtmSch
- *
- * @fn ixAtmSchPortRateModify( IxAtmLogicalPort port,
- unsigned int portRate)
- *
- * @brief This function is called to modify the portRate on a
- * previously initialized port, typically in the event that
- * the line condition of the port changes.
- *
- * @param port @ref IxAtmLogicalPort [in] - Specifies the ATM port which is to be
- * modified.
- *
- * @param portRate unsigned int [in] - Value indicating the new upstream
- * capacity for this port in cells/second.
- * A port rate of 800Kbits/s is the equivalent
- * of 1886 cells per second
- *
- * @return
- * - <b>IX_SUCCESS :</b> The port rate has been successfully modified.<br>
- * - <b>IX_FAIL :</b> The port rate could not be modified, either
- * because the input data was invalid, or the new port rate is
- * insufficient to support established ATM VC contracts on this
- * port.
- *
- * @warning The IxAtmSch component will validate the supplied port
- * rate is sufficient to support all established VC
- * contracts on the port. If the new port rate is
- * insufficient to support all established contracts then
- * the request to modify the port rate will be rejected.
- * In this event, the user is expected to remove
- * established contracts using the ixAtmSchVcModelRemove
- * interface and then retry this interface.
- *
- * @sa ixAtmSchVcModelRemove() */
-PUBLIC IX_STATUS
-ixAtmSchPortRateModify( IxAtmLogicalPort port,
- unsigned int portRate);
-
-
-/**
- * @ingroup IxAtmSch
- *
- * @fn ixAtmSchVcModelSetup( IxAtmLogicalPort port,
- IxAtmTrafficDescriptor *trafficDesc,
- IxAtmSchedulerVcId *vcId)
- *
- * @brief A client calls this interface to set up an upstream
- * (transmitting) virtual connection model (VC) on the
- * specified ATM port. This function also provides the
- * virtual * connection admission control (CAC) service to the
- * client.
- *
- * @param port @ref IxAtmLogicalPort [in] - Specifies the ATM port on which the upstream
- * VC is to be established.
- *
- * @param *trafficDesc @ref IxAtmTrafficDescriptor [in] - Pointer to a structure
- * describing the requested traffic contract of the VC to be
- * established. This structure contains the typical ATM
- * traffic descriptor values (e.g. PCR, SCR, MBS, CDVT, etc.)
- * defined by the ATM standard.
- *
- * @param *vcId @ref IxAtmSchedulerVcId [out] - This value will be filled with the
- * port-unique identifier for this virtual connection. A
- * valid identification is a non-negative number.
- *
- * @return
- * - <b>IX_SUCCESS :</b> The VC has been successfully established on
- * this port. The client may begin to submit demand on this VC.
- * - <b>IX_ATMSCH_RET_NOT_ADMITTED :</b> The VC cannot be established
- * on this port because there is insufficient upstream capacity
- * available to support the requested traffic contract descriptor
- * - <b>IX_FAIL :</b>Input data are invalid. VC has not been
- * established.
- */
-PUBLIC IX_STATUS
-ixAtmSchVcModelSetup( IxAtmLogicalPort port,
- IxAtmTrafficDescriptor *trafficDesc,
- IxAtmSchedulerVcId *vcId);
-
-/**
- * @ingroup IxAtmSch
- *
- * @fn ixAtmSchVcConnIdSet( IxAtmLogicalPort port,
- IxAtmSchedulerVcId vcId,
- IxAtmConnId vcUserConnId)
- *
- * @brief A client calls this interface to set the vcUserConnId for a VC on
- * the specified ATM port. This vcUserConnId will default to
- * IX_ATM_IDLE_CELLS_CONNID if this function is not called for a VC.
- * Hence if the client does not call this function for a VC then only idle
- * cells will be scheduled for this VC.
- *
- * @param port @ref IxAtmLogicalPort [in] - Specifies the ATM port on which the upstream
- * VC is has been established.
- *
- * @param vcId @ref IxAtmSchedulerVcId [in] - This is the unique identifier for this virtual
- * connection. A valid identification is a non-negative number and is
- * all ports.
- *
- * @param vcUserConnId @ref IxAtmConnId [in] - The connId is used to refer to a VC in schedule
- * table entries. It is treated as the Id by which the scheduler client
- * knows the VC. It is used in any communicatations from the Scheduler
- * to the scheduler user e.g. schedule table entries.
- *
- * @return
- * - <b>IX_SUCCESS :</b> The id has successfully been set.
- * - <b>IX_FAIL :</b>Input data are invalid. connId id is not established.
- */
-PUBLIC IX_STATUS
-ixAtmSchVcConnIdSet( IxAtmLogicalPort port,
- IxAtmSchedulerVcId vcId,
- IxAtmConnId vcUserConnId);
-
-/**
- * @ingroup IxAtmSch
- *
- * @fn ixAtmSchVcModelRemove( IxAtmLogicalPort port,
- IxAtmSchedulerVcId vcId)
- *
- * @brief Interface called by the client to remove a previously
- * established VC on a particular port.
- *
- * @param port @ref IxAtmLogicalPort [in] - Specifies the ATM port on which the VC to be
- * removed is established.
- *
- * @param vcId @ref IxAtmSchedulerVcId [in] - Identifies the VC to be removed. This is the
- * value returned by the @ref ixAtmSchVcModelSetup call which
- * established the relevant VC.
- *
- * @return
- * - <b>IX_SUCCESS :</b> The VC has been successfully removed from
- * this port. It is no longer modelled on this port.
- * - <b>IX_FAIL :</b>Input data are invalid. The VC is still being modeled
- * by the traffic shaper.
- *
- * @sa ixAtmSchVcModelSetup()
- */
-PUBLIC IX_STATUS
-ixAtmSchVcModelRemove( IxAtmLogicalPort port,
- IxAtmSchedulerVcId vcId);
-
-/**
- * @ingroup IxAtmSch
- *
- * @fn ixAtmSchVcQueueUpdate( IxAtmLogicalPort port,
- IxAtmSchedulerVcId vcId,
- unsigned int numberOfCells)
- *
- * @brief The client calls this function to notify IxAtmSch that the
- * user of a VC has submitted cells for transmission.
- *
- * This information is stored, aggregated from a number of calls to
- * ixAtmSchVcQueueUpdate and eventually used in the call to
- * ixAtmSchTableUpdate.
- *
- * Normally IxAtmSch will update the VC queue by adding the number of
- * cells to the current queue length. However, if IxAtmSch
- * determines that the user has over-submitted for the VC and
- * exceeded its transmission quota the queue request can be rejected.
- * The user should resubmit the request later when the queue has been
- * depleted.
- *
- * This implementation of ixAtmSchVcQueueUpdate uses no operating
- * system or external facilities, either directly or indirectly.
- * This allows clients to call this function form within an interrupt handler.
- *
- * This interface is structurally compatible with the
- * IxAtmdAccSchQueueUpdate callback type definition required for
- * IXP400 ATM scheduler interoperability.
- *
- * @param port @ref IxAtmLogicalPort [in] - Specifies the ATM port on which the VC to be
- * updated is established.
- *
- * @param vcId @ref IxAtmSchedulerVcId [in] - Identifies the VC to be updated. This is the
- * value returned by the @ref ixAtmSchVcModelSetup call which
- * established the relevant VC.
- *
- * @param numberOfCells unsigned int [in] - Indicates how many ATM cells should
- * be added to the queue for this VC.
- *
- * @return
- * - <b>IX_SUCCESS :</b> The VC queue has been successfully updated.
- * - <b>IX_ATMSCH_RET_QUEUE_FULL :</b> The VC queue has reached a
- * preset limit. This indicates the client has over-submitted
- * and exceeded its transmission quota. The request is
- * rejected. The VC queue is not updated. The VC user is
- * advised to resubmit the request later.
- * - <b>IX_FAIL :</b> The input are invalid. No VC queue is updated.
- *
- * @warning IxAtmSch assumes that the calling software ensures that
- * calls to ixAtmSchVcQueueUpdate, ixAtmSchVcQueueClear and
- * ixAtmSchTableUpdate are both self and mutually exclusive
- * for the same port.
- *
- * @sa ixAtmSchVcQueueUpdate(), ixAtmSchVcQueueClear(), ixAtmSchTableUpdate(). */
-PUBLIC IX_STATUS
-ixAtmSchVcQueueUpdate( IxAtmLogicalPort port,
- IxAtmSchedulerVcId vcId,
- unsigned int numberOfCells);
-
-/**
- * @ingroup IxAtmSch
- *
- * @fn ixAtmSchVcQueueClear( IxAtmLogicalPort port,
- IxAtmSchedulerVcId vcId)
- *
- * @brief The client calls this function to remove all currently
- * queued cells from a registered VC. The pending cell count
- * for the specified VC is reset to zero.
- *
- * This interface is structurally compatible with the
- * IxAtmdAccSchQueueClear callback type definition required for
- * IXP400 ATM scheduler interoperability.
- *
- * @param port @ref IxAtmLogicalPort [in] - Specifies the ATM port on which the VC to be
- * cleared is established.
- *
- * @param vcId @ref IxAtmSchedulerVcId [in] - Identifies the VC to be cleared. This is the
- * value returned by the @ref ixAtmSchVcModelSetup call which
- * established the relevant VC.
- *
- * @return
- * - <b>IX_SUCCESS :</b> The VC queue has been successfully cleared.
- * - <b>IX_FAIL :</b> The input are invalid. No VC queue is modified.
- *
- * @warning IxAtmSch assumes that the calling software ensures that
- * calls to ixAtmSchVcQueueUpdate, ixAtmSchVcQueueClear and
- * ixAtmSchTableUpdate are both self and mutually exclusive
- * for the same port.
- *
- * @sa ixAtmSchVcQueueUpdate(), ixAtmSchVcQueueClear(), ixAtmSchTableUpdate(). */
-PUBLIC IX_STATUS
-ixAtmSchVcQueueClear( IxAtmLogicalPort port,
- IxAtmSchedulerVcId vcId);
-
-/**
- * @ingroup IxAtmSch
- *
- * @fn ixAtmSchTableUpdate( IxAtmLogicalPort port,
- unsigned int maxCells,
- IxAtmScheduleTable **rettable)
- *
- * @brief The client calls this function to request an update of the
- * schedule table for a particular ATM port.
- *
- * This is called when the client decides it needs a new sequence of
- * cells to send (probably because the transmit queue is near to
- * empty for this ATM port). The scheduler will use its stored
- * information on the cells submitted for transmit (i.e. data
- * supplied via @ref ixAtmSchVcQueueUpdate function) with the traffic
- * descriptor information of all established VCs on the ATM port to
- * decide the sequence of cells to be sent and fill the schedule
- * table for a period of time into the future.
- *
- * IxAtmSch will guarantee a minimum of minCellsToSchedule if there
- * is at least one cell ready to send. If there are no cells then
- * IX_ATMSCH_RET_QUEUE_EMPTY is returned.
- *
- * This implementation of ixAtmSchTableUpdate uses no operating
- * system or external facilities, either directly or indirectly.
- * This allows clients to call this function form within an FIQ
- * interrupt handler.
- *
- * @param port @ref IxAtmLogicalPort [in] - Specifies the ATM port for which requested
- * schedule table is to be generated.
- *
- * @param maxCells unsigned [in] - Specifies the maximum number of cells
- * that must be scheduled in the supplied table during any
- * call to the interface.
- *
- * @param **table @ref IxAtmScheduleTable [out] - A pointer to an area of
- * storage is returned which contains the generated
- * schedule table. The client should not modify the
- * contents of this table.
- *
- * @return
- * - <b>IX_SUCCESS :</b> The schedule table has been published.
- * Currently there is at least one VC queue that is nonempty.
- * - <b>IX_ATMSCH_RET_QUEUE_EMPTY :</b> Currently all VC queues on
- * this port are empty. The schedule table returned is set to
- * NULL. The client is not expected to invoke this function
- * again until more cells have been submitted on this port
- * through the @ref ixAtmSchVcQueueUpdate function.
- * - <b>IX_FAIL :</b> The input are invalid. No action is taken.
- *
- * @warning IxAtmSch assumes that the calling software ensures that
- * calls to ixAtmSchVcQueueUpdate, ixAtmSchVcQueueClear and
- * ixAtmSchTableUpdate are both self and mutually exclusive
- * for the same port.
- *
- * @warning Subsequent calls to this function for the same port will
- * overwrite the contents of previously supplied schedule
- * tables. The client must be completely finished with the
- * previously supplied schedule table before calling this
- * function again for the same port.
- *
- * @sa ixAtmSchVcQueueUpdate(), ixAtmSchVcQueueClear(), ixAtmSchTableUpdate(). */
-PUBLIC IX_STATUS
-ixAtmSchTableUpdate( IxAtmLogicalPort port,
- unsigned int maxCells,
- IxAtmScheduleTable **rettable);
-
-/**
- * @ingroup IxAtmSch
- *
- * @fn ixAtmSchShow(void)
- *
- * @brief Utility function which will print statistics on the current
- * and accumulated state of VCs and traffic in the ATM
- * scheduler component. Output is sent to the default output
- * device.
- *
- * @param none
- * @return none
- */
-PUBLIC void
-ixAtmSchShow(void);
-
-/**
- * @ingroup IxAtmSch
- *
- * @fn ixAtmSchStatsClear(void)
- *
- * @brief Utility function which will reset all counter statistics in
- * the ATM scheduler to zero.
- *
- * @param none
- * @return none
- */
-PUBLIC void
-ixAtmSchStatsClear(void);
-
-#endif
-/* IXATMSCH_H */
-
-/** @} */
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