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u-boot/drivers/net/npe/include/IxQMgr.h

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/**
* @file IxQMgr.h
*
* @date 30-Oct-2001
*
* @brief This file contains the public API of IxQMgr component.
*
* Some functions contained in this module are inline to achieve better
* data-path performance. For this to work, the function definitions are
* contained in this header file. The "normal" use of inline functions
* is to use the inline functions in the module in which they are
* defined. In this case these inline functions are used in external
* modules and therefore the use of "inline extern". What this means
* is as follows: if a function foo is declared as "inline extern" this
* definition is only used for inlining, in no case is the function
* compiled on its own. If the compiler cannot inline the function it
* becomes an external reference. Therefore in IxQMgrQAccess.c all
* inline functions are defined without the "inline extern" specifier
* and so define the external references. In all other source files
* including this header file, these funtions are defined as "inline
* extern".
*
*
* @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 --
*/
/* ------------------------------------------------------
Doxygen group definitions
------------------------------------------------------ */
/**
* @defgroup IxQMgrAPI IXP400 Queue Manager (IxQMgr) API
*
* @brief The public API for the IXP400 QMgr component.
*
* IxQMgr is a low level interface to the AHB Queue Manager
*
* @{
*/
#ifndef IXQMGR_H
#define IXQMGR_H
/*
* User defined include files
*/
#include "IxOsal.h"
/*
* Define QMgr's IoMem macros, in DC mode if in LE
* regular if in BE. (Note: For Linux LSP gold release
* may need to adjust mode.
*/
#if defined (__BIG_ENDIAN)
#define IX_QMGR_INLINE_READ_LONG IX_OSAL_READ_LONG_BE
#define IX_QMGR_INLINE_WRITE_LONG IX_OSAL_WRITE_LONG_BE
#else
#define IX_QMGR_INLINE_READ_LONG IX_OSAL_READ_LONG_LE_DC
#define IX_QMGR_INLINE_WRITE_LONG IX_OSAL_WRITE_LONG_LE_DC
#endif
/*
* #defines and macros
*/
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_INLINE
*
* @brief Inline definition, for inlining of Queue Access functions on API
*
* Please read the header information in this file for more details on the
* use of function inlining in this component.
*
*/
#ifndef __wince
#ifdef IXQMGRQACCESS_C
/* If IXQMGRQACCESS_C is set then the IxQmgrQAccess.c is including this file
and must instantiate a concrete definition for each inlineable API function
whether or not that function actually gets inlined. */
# ifdef NO_INLINE_APIS
# undef NO_INLINE_APIS
# endif
# define IX_QMGR_INLINE /* Empty Define */
#else
# ifndef NO_INLINE_APIS
# define IX_QMGR_INLINE IX_OSAL_INLINE_EXTERN
# else
# define IX_QMGR_INLINE /* Empty Define */
# endif
#endif
#else /* ndef __wince */
# ifndef NO_INLINE_APIS
# define NO_INLINE_APIS
# endif
# define IX_QMGR_INLINE
#endif
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_MAX_NUM_QUEUES
*
* @brief Number of queues supported by the AQM.
*
* This constant is used to indicate the number of AQM queues
*
*/
#define IX_QMGR_MAX_NUM_QUEUES 64
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_MIN_QID
*
* @brief Minimum queue identifier.
*
* This constant is used to indicate the smallest queue identifier
*
*/
#define IX_QMGR_MIN_QID IX_QMGR_QUEUE_0
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_MAX_QID
*
* @brief Maximum queue identifier.
*
* This constant is used to indicate the largest queue identifier
*
*/
#define IX_QMGR_MAX_QID IX_QMGR_QUEUE_63
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_MIN_QUEUPP_QID
*
* @brief Minimum queue identifier for reduced functionality queues.
*
* This constant is used to indicate Minimum queue identifier for reduced
* functionality queues
*
*/
#define IX_QMGR_MIN_QUEUPP_QID 32
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_MAX_QNAME_LEN
*
* @brief Maximum queue name length.
*
* This constant is used to indicate the maximum null terminated string length
* (excluding '\0') for a queue name
*
*/
#define IX_QMGR_MAX_QNAME_LEN 16
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_WARNING
*
* @brief Warning return code.
*
* Execution complete, but there is a special case to handle
*
*/
#define IX_QMGR_WARNING 2
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_PARAMETER_ERROR
*
* @brief Parameter error return code (NULL pointer etc..).
*
* parameter error out of range/invalid
*
*/
#define IX_QMGR_PARAMETER_ERROR 3
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_INVALID_Q_ENTRY_SIZE
*
* @brief Invalid entry size return code.
*
* Invalid queue entry size for a queue read/write
*
*/
#define IX_QMGR_INVALID_Q_ENTRY_SIZE 4
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_INVALID_Q_ID
*
* @brief Invalid queue identifier return code.
*
* Invalid queue id, not in range 0-63
*
*/
#define IX_QMGR_INVALID_Q_ID 5
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_INVALID_CB_ID
*
* @brief Invalid callback identifier return code.
*
* Invalid callback id
*/
#define IX_QMGR_INVALID_CB_ID 6
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_CB_ALREADY_SET
*
* @brief Callback set error return code.
*
* The specified callback has already been for this queue
*
*/
#define IX_QMGR_CB_ALREADY_SET 7
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_NO_AVAILABLE_SRAM
*
* @brief Sram consumed return code.
*
* All AQM Sram is consumed by queue configuration
*
*/
#define IX_QMGR_NO_AVAILABLE_SRAM 8
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_INVALID_INT_SOURCE_ID
*
* @brief Invalid queue interrupt source identifier return code.
*
* Invalid queue interrupt source given for notification enable
*/
#define IX_QMGR_INVALID_INT_SOURCE_ID 9
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_INVALID_QSIZE
*
* @brief Invalid queue size error code.
*
* Invalid queue size not one of 16,32, 64, 128
*
*
*/
#define IX_QMGR_INVALID_QSIZE 10
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_INVALID_Q_WM
*
* @brief Invalid queue watermark return code.
*
* Invalid queue watermark given for watermark set
*/
#define IX_QMGR_INVALID_Q_WM 11
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_Q_NOT_CONFIGURED
*
* @brief Queue not configured return code.
*
* Returned to the client when a function has been called on an unconfigured
* queue
*
*/
#define IX_QMGR_Q_NOT_CONFIGURED 12
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_Q_ALREADY_CONFIGURED
*
* @brief Queue already configured return code.
*
* Returned to client to indicate that a queue has already been configured
*/
#define IX_QMGR_Q_ALREADY_CONFIGURED 13
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_Q_UNDERFLOW
*
* @brief Underflow return code.
*
* Underflow on a queue read has occurred
*
*/
#define IX_QMGR_Q_UNDERFLOW 14
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_Q_OVERFLOW
*
* @brief Overflow return code.
*
* Overflow on a queue write has occurred
*
*/
#define IX_QMGR_Q_OVERFLOW 15
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_Q_INVALID_PRIORITY
*
* @brief Invalid priority return code.
*
* Invalid priority, not one of 0,1,2
*/
#define IX_QMGR_Q_INVALID_PRIORITY 16
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_ENTRY_INDEX_OUT_OF_BOUNDS
*
* @brief Entry index out of bounds return code.
*
* Entry index is greater than number of entries in queue.
*/
#define IX_QMGR_ENTRY_INDEX_OUT_OF_BOUNDS 17
/**
*
* @ingroup IxQMgrAPI
*
* @def ixQMgrDispatcherLoopRun
*
* @brief Map old function name ixQMgrDispatcherLoopRun ()
* to @ref ixQMgrDispatcherLoopRunA0 ().
*
*/
#define ixQMgrDispatcherLoopRun ixQMgrDispatcherLoopRunA0
/**
*
* @ingroup IxQMgrAPI
*
* @def IX_QMGR_QUEUE
*
* @brief Definition of AQM queue numbers
*
*/
#define IX_QMGR_QUEUE_0 (0) /**< Queue Number 0 */
#define IX_QMGR_QUEUE_1 (1) /**< Queue Number 1 */
#define IX_QMGR_QUEUE_2 (2) /**< Queue Number 2 */
#define IX_QMGR_QUEUE_3 (3) /**< Queue Number 3 */
#define IX_QMGR_QUEUE_4 (4) /**< Queue Number 4 */
#define IX_QMGR_QUEUE_5 (5) /**< Queue Number 5 */
#define IX_QMGR_QUEUE_6 (6) /**< Queue Number 6 */
#define IX_QMGR_QUEUE_7 (7) /**< Queue Number 7 */
#define IX_QMGR_QUEUE_8 (8) /**< Queue Number 8 */
#define IX_QMGR_QUEUE_9 (9) /**< Queue Number 9 */
#define IX_QMGR_QUEUE_10 (10) /**< Queue Number 10 */
#define IX_QMGR_QUEUE_11 (11) /**< Queue Number 11 */
#define IX_QMGR_QUEUE_12 (12) /**< Queue Number 12 */
#define IX_QMGR_QUEUE_13 (13) /**< Queue Number 13 */
#define IX_QMGR_QUEUE_14 (14) /**< Queue Number 14 */
#define IX_QMGR_QUEUE_15 (15) /**< Queue Number 15 */
#define IX_QMGR_QUEUE_16 (16) /**< Queue Number 16 */
#define IX_QMGR_QUEUE_17 (17) /**< Queue Number 17 */
#define IX_QMGR_QUEUE_18 (18) /**< Queue Number 18 */
#define IX_QMGR_QUEUE_19 (19) /**< Queue Number 19 */
#define IX_QMGR_QUEUE_20 (20) /**< Queue Number 20 */
#define IX_QMGR_QUEUE_21 (21) /**< Queue Number 21 */
#define IX_QMGR_QUEUE_22 (22) /**< Queue Number 22 */
#define IX_QMGR_QUEUE_23 (23) /**< Queue Number 23 */
#define IX_QMGR_QUEUE_24 (24) /**< Queue Number 24 */
#define IX_QMGR_QUEUE_25 (25) /**< Queue Number 25 */
#define IX_QMGR_QUEUE_26 (26) /**< Queue Number 26 */
#define IX_QMGR_QUEUE_27 (27) /**< Queue Number 27 */
#define IX_QMGR_QUEUE_28 (28) /**< Queue Number 28 */
#define IX_QMGR_QUEUE_29 (29) /**< Queue Number 29 */
#define IX_QMGR_QUEUE_30 (30) /**< Queue Number 30 */
#define IX_QMGR_QUEUE_31 (31) /**< Queue Number 31 */
#define IX_QMGR_QUEUE_32 (32) /**< Queue Number 32 */
#define IX_QMGR_QUEUE_33 (33) /**< Queue Number 33 */
#define IX_QMGR_QUEUE_34 (34) /**< Queue Number 34 */
#define IX_QMGR_QUEUE_35 (35) /**< Queue Number 35 */
#define IX_QMGR_QUEUE_36 (36) /**< Queue Number 36 */
#define IX_QMGR_QUEUE_37 (37) /**< Queue Number 37 */
#define IX_QMGR_QUEUE_38 (38) /**< Queue Number 38 */
#define IX_QMGR_QUEUE_39 (39) /**< Queue Number 39 */
#define IX_QMGR_QUEUE_40 (40) /**< Queue Number 40 */
#define IX_QMGR_QUEUE_41 (41) /**< Queue Number 41 */
#define IX_QMGR_QUEUE_42 (42) /**< Queue Number 42 */
#define IX_QMGR_QUEUE_43 (43) /**< Queue Number 43 */
#define IX_QMGR_QUEUE_44 (44) /**< Queue Number 44 */
#define IX_QMGR_QUEUE_45 (45) /**< Queue Number 45 */
#define IX_QMGR_QUEUE_46 (46) /**< Queue Number 46 */
#define IX_QMGR_QUEUE_47 (47) /**< Queue Number 47 */
#define IX_QMGR_QUEUE_48 (48) /**< Queue Number 48 */
#define IX_QMGR_QUEUE_49 (49) /**< Queue Number 49 */
#define IX_QMGR_QUEUE_50 (50) /**< Queue Number 50 */
#define IX_QMGR_QUEUE_51 (51) /**< Queue Number 51 */
#define IX_QMGR_QUEUE_52 (52) /**< Queue Number 52 */
#define IX_QMGR_QUEUE_53 (53) /**< Queue Number 53 */
#define IX_QMGR_QUEUE_54 (54) /**< Queue Number 54 */
#define IX_QMGR_QUEUE_55 (55) /**< Queue Number 55 */
#define IX_QMGR_QUEUE_56 (56) /**< Queue Number 56 */
#define IX_QMGR_QUEUE_57 (57) /**< Queue Number 57 */
#define IX_QMGR_QUEUE_58 (58) /**< Queue Number 58 */
#define IX_QMGR_QUEUE_59 (59) /**< Queue Number 59 */
#define IX_QMGR_QUEUE_60 (60) /**< Queue Number 60 */
#define IX_QMGR_QUEUE_61 (61) /**< Queue Number 61 */
#define IX_QMGR_QUEUE_62 (62) /**< Queue Number 62 */
#define IX_QMGR_QUEUE_63 (63) /**< Queue Number 63 */
#define IX_QMGR_QUEUE_INVALID (64) /**< AQM Queue Number Delimiter */
/*
* Typedefs
*/
/**
* @typedef IxQMgrQId
*
* @ingroup IxQMgrAPI
*
* @brief Used in the API to identify the AQM queues.
*
*/
typedef int IxQMgrQId;
/**
* @typedef IxQMgrQStatus
*
* @ingroup IxQMgrAPI
*
* @brief Queue status.
*
* A queues status is defined by its relative fullness or relative emptiness.
* Each of the queues 0-31 have Nearly Empty, Nearly Full, Empty, Full,
* Underflow and Overflow status flags. Queues 32-63 have just Nearly Empty and
* Full status flags.
* The flags bit positions are outlined below:
*
* OF - bit-5<br>
* UF - bit-4<br>
* F - bit-3<br>
* NF - bit-2<br>
* NE - bit-1<br>
* E - bit-0<br>
*
*/
typedef UINT32 IxQMgrQStatus;
/**
* @enum IxQMgrQStatusMask
*
* @ingroup IxQMgrAPI
*
* @brief Queue status mask.
*
* Masks for extracting the individual status flags from the IxQMgrStatus
* word.
*
*/
typedef enum
{
IX_QMGR_Q_STATUS_E_BIT_MASK = 0x1,
IX_QMGR_Q_STATUS_NE_BIT_MASK = 0x2,
IX_QMGR_Q_STATUS_NF_BIT_MASK = 0x4,
IX_QMGR_Q_STATUS_F_BIT_MASK = 0x8,
IX_QMGR_Q_STATUS_UF_BIT_MASK = 0x10,
IX_QMGR_Q_STATUS_OF_BIT_MASK = 0x20
} IxQMgrQStatusMask;
/**
* @enum IxQMgrSourceId
*
* @ingroup IxQMgrAPI
*
* @brief Queue interrupt source select.
*
* This enum defines the different source conditions on a queue that result in
* an interrupt being fired by the AQM. Interrupt source is configurable for
* queues 0-31 only. The interrupt source for queues 32-63 is hardwired to the
* NE(Nearly Empty) status flag.
*
*/
typedef enum
{
IX_QMGR_Q_SOURCE_ID_E = 0, /**< Queue Empty due to last read */
IX_QMGR_Q_SOURCE_ID_NE, /**< Queue Nearly Empty due to last read */
IX_QMGR_Q_SOURCE_ID_NF, /**< Queue Nearly Full due to last write */
IX_QMGR_Q_SOURCE_ID_F, /**< Queue Full due to last write */
IX_QMGR_Q_SOURCE_ID_NOT_E, /**< Queue Not Empty due to last write */
IX_QMGR_Q_SOURCE_ID_NOT_NE, /**< Queue Not Nearly Empty due to last write */
IX_QMGR_Q_SOURCE_ID_NOT_NF, /**< Queue Not Nearly Full due to last read */
IX_QMGR_Q_SOURCE_ID_NOT_F /**< Queue Not Full due to last read */
} IxQMgrSourceId;
/**
* @enum IxQMgrQEntrySizeInWords
*
* @ingroup IxQMgrAPI
*
* @brief QMgr queue entry sizes.
*
* The entry size of a queue specifies the size of a queues entry in words.
*
*/
typedef enum
{
IX_QMGR_Q_ENTRY_SIZE1 = 1, /**< 1 word entry */
IX_QMGR_Q_ENTRY_SIZE2 = 2, /**< 2 word entry */
IX_QMGR_Q_ENTRY_SIZE4 = 4 /**< 4 word entry */
} IxQMgrQEntrySizeInWords;
/**
* @enum IxQMgrQSizeInWords
*
* @ingroup IxQMgrAPI
*
* @brief QMgr queue sizes.
*
* These values define the allowed queue sizes for AQM queue. The sizes are
* specified in words.
*
*/
typedef enum
{
IX_QMGR_Q_SIZE16 = 16, /**< 16 word buffer */
IX_QMGR_Q_SIZE32 = 32, /**< 32 word buffer */
IX_QMGR_Q_SIZE64 = 64, /**< 64 word buffer */
IX_QMGR_Q_SIZE128 = 128, /**< 128 word buffer */
IX_QMGR_Q_SIZE_INVALID = 129 /**< Insure that this is greater than largest
* queue size supported by the hardware
*/
} IxQMgrQSizeInWords;
/**
* @enum IxQMgrWMLevel
*
* @ingroup IxQMgrAPI
*
* @brief QMgr watermark levels.
*
* These values define the valid watermark levels(in ENTRIES) for queues. Each
* queue 0-63 have configurable Nearly full and Nearly empty watermarks. For
* queues 32-63 the Nearly full watermark has NO EFFECT.
* If the Nearly full watermark is set to IX_QMGR_Q_WM_LEVEL16 this means that
* the nearly full flag will be set by the hardware when there are >= 16 empty
* entries in the specified queue.
* If the Nearly empty watermark is set to IX_QMGR_Q_WM_LEVEL16 this means that
* the Nearly empty flag will be set by the hardware when there are <= 16 full
* entries in the specified queue.
*/
typedef enum
{
IX_QMGR_Q_WM_LEVEL0 = 0, /**< 0 entry watermark */
IX_QMGR_Q_WM_LEVEL1 = 1, /**< 1 entry watermark */
IX_QMGR_Q_WM_LEVEL2 = 2, /**< 2 entry watermark */
IX_QMGR_Q_WM_LEVEL4 = 4, /**< 4 entry watermark */
IX_QMGR_Q_WM_LEVEL8 = 8, /**< 8 entry watermark */
IX_QMGR_Q_WM_LEVEL16 = 16, /**< 16 entry watermark */
IX_QMGR_Q_WM_LEVEL32 = 32, /**< 32 entry watermark */
IX_QMGR_Q_WM_LEVEL64 = 64 /**< 64 entry watermark */
} IxQMgrWMLevel;
/**
* @ingroup IxQMgrAPI
*
* @enum IxQMgrDispatchGroup
*
* @brief QMgr dispatch group select identifiers.
*
* This enum defines the groups over which the dispatcher will process when
* called. One of the enum values must be used as a input to
* @a ixQMgrDispatcherLoopRunA0, @a ixQMgrDispatcherLoopRunB0
* or @a ixQMgrDispatcherLoopRunB0LLP.
*
*/
typedef enum
{
IX_QMGR_QUELOW_GROUP = 0, /**< Queues 0-31 */
IX_QMGR_QUEUPP_GROUP /**< Queues 32-63 */
} IxQMgrDispatchGroup;
/**
* @ingroup IxQMgrAPI
*
* @enum IxQMgrPriority
*
* @brief Dispatcher priority levels.
*
* This enum defines the different queue dispatch priority levels.
* The lowest priority number (0) is the highest priority level.
*
*/
typedef enum
{
IX_QMGR_Q_PRIORITY_0 = 0, /**< Priority level 0 */
IX_QMGR_Q_PRIORITY_1, /**< Priority level 1 */
IX_QMGR_Q_PRIORITY_2, /**< Priority level 2 */
IX_QMGR_Q_PRIORITY_INVALID /**< Invalid Priority level */
} IxQMgrPriority;
/**
* @ingroup IxQMgrAPI
*
* @enum IxQMgrType
*
* @brief Callback types as used with livelock prevention
*
* This enum defines the different callback types.
* These types are only used when Livelock prevention is enabled.
* The default is IX_QMGR_TYPE_REALTIME_OTHER.
*
*/
typedef enum
{
IX_QMGR_TYPE_REALTIME_OTHER = 0, /**< Real time callbacks-always allowed run*/
IX_QMGR_TYPE_REALTIME_PERIODIC, /**< Periodic callbacks-always allowed run */
IX_QMGR_TYPE_REALTIME_SPORADIC /**< Sporadic callbacks-only run if no
periodic callbacks are in progress */
} IxQMgrType;
/**
* @ingroup IxQMgrAPI
*
* @typedef IxQMgrCallbackId
*
* @brief Uniquely identifies a callback function.
*
* A unique callback identifier associated with each callback
* registered by clients.
*
*/
typedef unsigned IxQMgrCallbackId;
/**
* @typedef IxQMgrCallback
*
* @brief QMgr notification callback type.
*
* This defines the interface to all client callback functions.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier
* @param cbId @ref IxQMgrCallbackId [in] - the callback identifier
*/
typedef void (*IxQMgrCallback)(IxQMgrQId qId,
IxQMgrCallbackId cbId);
/**
* @ingroup IxQMgrAPI
*
* @typedef IxQMgrDispatcherFuncPtr
*
* @brief QMgr Dispatcher Loop function pointer.
*
* This defines the interface for QMgr Dispather functions.
*
* @param group @ref IxQMgrDispatchGroup [in] - the group of the
* queue of which the dispatcher will run
*/
typedef void (*IxQMgrDispatcherFuncPtr)(IxQMgrDispatchGroup group);
/*
* Function Prototypes
*/
/* ------------------------------------------------------------
Initialisation related functions
---------------------------------------------------------- */
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrInit (void)
*
* @brief Initialise the QMgr.
*
* This function must be called before and other QMgr function. It
* sets up internal data structures.
*
* @return @li IX_SUCCESS, the IxQMgr successfully initialised
* @return @li IX_FAIL, failed to initialize the Qmgr
*
*/
PUBLIC IX_STATUS
ixQMgrInit (void);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrUnload (void)
*
* @brief Uninitialise the QMgr.
*
* This function will perform the tasks required to unload the QMgr component
* cleanly. This includes unmapping kernel memory.
* This should be called before a soft reboot or unloading of a kernel module.
*
* @pre It should only be called if @ref ixQMgrInit has already been called.
*
* @post No QMgr functions should be called until ixQMgrInit is called again.
*
* @return @li IX_SUCCESS, the IxQMgr successfully uninitialised
* @return @li IX_FAIL, failed to uninitialize the Qmgr
*
*/
PUBLIC IX_STATUS
ixQMgrUnload (void);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrShow (void)
*
* @brief Describe queue configuration and statistics for active queues.
*
* This function shows active queues, their configurations and statistics.
*
* @return @li void
*
*/
PUBLIC void
ixQMgrShow (void);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQShow (IxQMgrQId qId)
*
* @brief Display aqueue configuration and statistics for a queue.
*
* This function shows queue configuration and statistics for a queue.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
*
* @return @li IX_SUCCESS, success
* @return @li IX_QMGR_Q_NOT_CONFIGURED, queue not configured for this QId
*
*/
PUBLIC IX_STATUS
ixQMgrQShow (IxQMgrQId qId);
/* ------------------------------------------------------------
Configuration related functions
---------------------------------------------------------- */
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQConfig (char *qName,
IxQMgrQId qId,
IxQMgrQSizeInWords qSizeInWords,
IxQMgrQEntrySizeInWords qEntrySizeInWords)
*
* @brief Configure an AQM queue.
*
* This function is called by a client to setup a queue. The size and entrySize
* qId and qName(NULL pointer) are checked for valid values. This function must
* be called for each queue, before any queue accesses are made and after
* ixQMgrInit() has been called. qName is assumed to be a '\0' terminated array
* of 16 charachters or less.
*
* @param *qName char [in] - is the name provided by the client and is associated
* with a QId by the QMgr.
* @param qId @ref IxQMgrQId [in] - the qId of this queue
* @param qSizeInWords @ref IxQMgrQSize [in] - the size of the queue can be one of 16,32
* 64, 128 words.
* @param qEntrySizeInWords @ref IxQMgrQEntrySizeInWords [in] - the size of a queue entry
* can be one of 1,2,4 words.
*
* @return @li IX_SUCCESS, a specified queue has been successfully configured.
* @return @li IX_FAIL, IxQMgr has not been initialised.
* @return @li IX_QMGR_PARAMETER_ERROR, invalid parameter(s).
* @return @li IX_QMGR_INVALID_QSIZE, invalid queue size
* @return @li IX_QMGR_INVALID_Q_ID, invalid queue id
* @return @li IX_QMGR_INVALID_Q_ENTRY_SIZE, invalid queue entry size
* @return @li IX_QMGR_Q_ALREADY_CONFIGURED, queue already configured
*
*/
PUBLIC IX_STATUS
ixQMgrQConfig (char *qName,
IxQMgrQId qId,
IxQMgrQSizeInWords qSizeInWords,
IxQMgrQEntrySizeInWords qEntrySizeInWords);
/**
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQSizeInEntriesGet (IxQMgrQId qId,
unsigned *qSizeInEntries)
*
* @brief Return the size of a queue in entries.
*
* This function returns the the size of the queue in entriese.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier
* @param *qSizeInEntries @ref IxQMgrQSize [out] - queue size in entries
*
* @return @li IX_SUCCESS, successfully retrieved the number of full entrie
* @return @li IX_QMGR_Q_NOT_CONFIGURED, queue not configured for this QId
* @return @li IX_QMGR_PARAMETER_ERROR, invalid parameter(s).
*
*/
PUBLIC IX_STATUS
ixQMgrQSizeInEntriesGet (IxQMgrQId qId,
unsigned *qSizeInEntries);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrWatermarkSet (IxQMgrQId qId,
IxQMgrWMLevel ne,
IxQMgrWMLevel nf)
*
* @brief Set the Nearly Empty and Nearly Full Watermarks fo a queue.
*
* This function is called by a client to set the watermarks NE and NF for the
* queue specified by qId.
* The queue must be empty at the time this function is called, it is the clients
* responsibility to ensure that the queue is empty.
* This function will read the status of the queue before the watermarks are set
* and again after the watermarks are set. If the status register has changed,
* due to a queue access by an NPE for example, a warning is returned.
* Queues 32-63 only support the NE flag, therefore the value of nf will be ignored
* for these queues.
*
* @param qId @ref IxQMgrQId [in] - the QId of the queue.
* @param ne @ref IxQMgrWMLevel [in] - the NE(Nearly Empty) watermark for this
* queue. Valid values are 0,1,2,4,8,16,32 and
* 64 entries.
* @param nf @ref IxQMgrWMLevel [in] - the NF(Nearly Full) watermark for this queue.
* Valid values are 0,1,2,4,8,16,32 and 64
* entries.
*
* @return @li IX_SUCCESS, watermarks have been set for the queu
* @return @li IX_QMGR_Q_NOT_CONFIGURED, queue not configured for this QId
* @return @li IX_QMGR_INVALID_Q_WM, invalid watermark
* @return @li IX_QMGR_WARNING, the status register may not be constistent
*
*/
PUBLIC IX_STATUS
ixQMgrWatermarkSet (IxQMgrQId qId,
IxQMgrWMLevel ne,
IxQMgrWMLevel nf);
/**
* @ingroup IxQMgrAPI
*
* @fn ixQMgrAvailableSramAddressGet (UINT32 *address,
unsigned *sizeOfFreeSram)
*
* @brief Return the address of available AQM SRAM.
*
* This function returns the starting address in AQM SRAM not used by the
* current queue configuration and should only be called after all queues
* have been configured.
* Calling this function before all queues have been configured will will return
* the currently available SRAM. A call to configure another queue will use some
* of the available SRAM.
* The amount of SRAM available is specified in sizeOfFreeSram. The address is the
* address of the bottom of available SRAM. Available SRAM extends from address
* from address to address + sizeOfFreeSram.
*
* @param **address UINT32 [out] - the address of the available SRAM, NULL if
* none available.
* @param *sizeOfFreeSram unsigned [out]- the size in words of available SRAM
*
* @return @li IX_SUCCESS, there is available SRAM and is pointed to by address
* @return @li IX_QMGR_PARAMETER_ERROR, invalid parameter(s)
* @return @li IX_QMGR_NO_AVAILABLE_SRAM, all AQM SRAM is consumed by the queue
* configuration.
*
*/
PUBLIC IX_STATUS
ixQMgrAvailableSramAddressGet (UINT32 *address,
unsigned *sizeOfFreeSram);
/* ------------------------------------------------------------
Queue access related functions
---------------------------------------------------------- */
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQReadWithChecks (IxQMgrQId qId,
UINT32 *entry)
*
* @brief Read an entry from a queue.
*
* This function reads an entire entry from a queue returning it in entry. The
* queue configuration word is read to determine what entry size this queue is
* configured for and then the number of words specified by the entry size is
* read. entry must be a pointer to a previously allocated array of sufficient
* size to hold an entry.
*
* @note - IX_QMGR_Q_UNDERFLOW is only returned for queues 0-31 as queues 32-63
* do not have an underflow status maintained.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
* @param *entry UINT32 [out] - pointer to the entry word(s).
*
* @return @li IX_SUCCESS, entry was successfully read.
* @return @li IX_QMGR_PARAMETER_ERROR, invalid paramter(s).
* @return @li IX_QMGR_Q_NOT_CONFIGURED, queue not configured for this QId
* @return @li IX_QMGR_Q_UNDERFLOW, attempt to read from an empty queue
*
*/
PUBLIC IX_STATUS
ixQMgrQReadWithChecks (IxQMgrQId qId,
UINT32 *entry);
/**
* @brief Internal structure to facilitate inlining functions in IxQMgr.h
*/
typedef struct
{
/* fields related to write functions */
UINT32 qOflowStatBitMask; /**< overflow status mask */
UINT32 qWriteCount; /**< queue write count */
/* fields related to read and write functions */
volatile UINT32 *qAccRegAddr; /**< access register */
volatile UINT32 *qUOStatRegAddr; /**< status register */
volatile UINT32 *qConfigRegAddr; /**< config register */
UINT32 qEntrySizeInWords; /**< queue entry size in words */
UINT32 qSizeInEntries; /**< queue size in entries */
/* fields related to read functions */
UINT32 qUflowStatBitMask; /**< underflow status mask */
UINT32 qReadCount; /**< queue read count */
} IxQMgrQInlinedReadWriteInfo;
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQReadMWordsMinus1 (IxQMgrQId qId,
UINT32 *entry)
*
* @brief This function reads the remaining of the q entry
* for queues configured with many words.
* (the first word of the entry is already read
* in the inlined function and the entry pointer already
* incremented
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
* @param *entry UINT32 [out] - pointer to the entry word(s).
*
* @return @li IX_SUCCESS, entry was successfully read.
* @return @li IX_QMGR_Q_UNDERFLOW, attempt to read from an empty queue
*
*/
PUBLIC IX_STATUS
ixQMgrQReadMWordsMinus1 (IxQMgrQId qId,
UINT32 *entry);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQRead (IxQMgrQId qId,
UINT32 *entry)
*
* @brief Fast read of an entry from a queue.
*
* This function is a heavily streamlined version of ixQMgrQReadWithChecks(),
* but performs essentially the same task. It reads an entire entry from a
* queue, returning it in entry which must be a pointer to a previously
* allocated array of sufficient size to hold an entry.
*
* @note - This function is inlined, to reduce unnecessary function call
* overhead. It does not perform any parameter checks, or update any statistics.
* Also, it does not check that the queue specified by qId has been configured.
* or is in range. It simply reads an entry from the queue, and checks for
* underflow.
*
* @note - IX_QMGR_Q_UNDERFLOW is only returned for queues 0-31 as queues 32-63
* do not have an underflow status maintained.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
* @param *entry UINT32 [out] - pointer to the entry word(s).
*
* @return @li IX_SUCCESS, entry was successfully read.
* @return @li IX_QMGR_Q_UNDERFLOW, attempt to read from an empty queue
*
*/
#ifdef NO_INLINE_APIS
PUBLIC IX_STATUS
ixQMgrQRead (IxQMgrQId qId,
UINT32 *entryPtr);
#else
extern IxQMgrQInlinedReadWriteInfo ixQMgrQInlinedReadWriteInfo[];
extern IX_STATUS ixQMgrQReadMWordsMinus1 (IxQMgrQId qId, UINT32 *entryPtr);
IX_QMGR_INLINE PUBLIC IX_STATUS
ixQMgrQRead (IxQMgrQId qId,
UINT32 *entryPtr);
#endif
IX_QMGR_INLINE PUBLIC IX_STATUS
ixQMgrQRead (IxQMgrQId qId,
UINT32 *entryPtr)
#ifdef NO_INLINE_APIS
;
#else
{
IxQMgrQInlinedReadWriteInfo *infoPtr = &ixQMgrQInlinedReadWriteInfo[qId];
UINT32 entry, entrySize;
/* get a new entry */
entrySize = infoPtr->qEntrySizeInWords;
entry = IX_QMGR_INLINE_READ_LONG(infoPtr->qAccRegAddr);
if (entrySize != IX_QMGR_Q_ENTRY_SIZE1)
{
*entryPtr = entry;
/* process the remaining part of the entry */
return ixQMgrQReadMWordsMinus1(qId, entryPtr);
}
/* underflow is available for lower queues only */
if (qId < IX_QMGR_MIN_QUEUPP_QID)
{
/* the counter of queue entries is decremented. In happy
* day scenario there are many entries in the queue
* and the counter does not reach zero.
*/
if (infoPtr->qReadCount-- == 0)
{
/* There is maybe no entry in the queue
* qReadCount is now negative, but will be corrected before
* the function returns.
*/
UINT32 qPtrs; /* queue internal pointers */
/* when a queue is empty, the hw guarantees to return
* a null value. If the value is not null, the queue is
* not empty.
*/
if (entry == 0)
{
/* get the queue status */
UINT32 status = IX_QMGR_INLINE_READ_LONG(infoPtr->qUOStatRegAddr);
/* check the underflow status */
if (status & infoPtr->qUflowStatBitMask)
{
/* the queue is empty
* clear the underflow status bit if it was set
*/
IX_QMGR_INLINE_WRITE_LONG(infoPtr->qUOStatRegAddr,
status & ~infoPtr->qUflowStatBitMask);
*entryPtr = 0;
infoPtr->qReadCount = 0;
return IX_QMGR_Q_UNDERFLOW;
}
}
/* store the result */
*entryPtr = entry;
/* No underflow occured : someone is filling the queue
* or the queue contains null entries.
* The current counter needs to be
* updated from the current number of entries in the queue
*/
/* get snapshot of queue pointers */
qPtrs = IX_QMGR_INLINE_READ_LONG(infoPtr->qConfigRegAddr);
/* Mod subtraction of pointers to get number of words in Q. */
qPtrs = (qPtrs - (qPtrs >> 7)) & 0x7f;
if (qPtrs == 0)
{
/* no entry in the queue */
infoPtr->qReadCount = 0;
}
else
{
/* convert the number of words inside the queue
* to a number of entries
*/
infoPtr->qReadCount = qPtrs & (infoPtr->qSizeInEntries - 1);
}
return IX_SUCCESS;
}
}
*entryPtr = entry;
return IX_SUCCESS;
}
#endif
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQBurstRead (IxQMgrQId qId,
UINT32 numEntries,
UINT32 *entries)
*
* @brief Read a number of entries from an AQM queue.
*
* This function will burst read a number of entries from the specified queue.
* The entry size of queue is auto-detected. The function will attempt to
* read as many entries as specified by the numEntries parameter and will
* return an UNDERFLOW if any one of the individual entry reads fail.
*
* @warning
* IX_QMGR_Q_UNDERFLOW is only returned for queues 0-31 as queues 32-63
* do not have an underflow status maintained, hence there is a potential for
* silent failure here. This function must be used with caution.
*
* @note
* This function is intended for fast draining of queues, so to make it
* as efficient as possible, it has the following features:
* - This function is inlined, to reduce unnecessary function call overhead.
* - It does not perform any parameter checks, or update any statistics.
* - It does not check that the queue specified by qId has been configured.
* - It does not check that the queue has the number of full entries that
* have been specified to be read. It will read until it finds a NULL entry or
* until the number of specified entries have been read. It always checks for
* underflow after all the reads have been performed.
* Therefore, the client should ensure before calling this function that there
* are enough entries in the queue to read. ixQMgrQNumEntriesGet() will
* provide the number of full entries in a queue.
* ixQMgrQRead() or ixQMgrQReadWithChecks(), which only reads
* a single queue entry per call, should be used instead if the user requires
* checks for UNDERFLOW after each entry read.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
* @param numEntries unsigned [in] - the number of entries to read.
* This number should be greater than 0
* @param *entries UINT32 [out] - the word(s) read.
*
* @return @li IX_SUCCESS, entries were successfully read.
* @return @li IX_QMGR_Q_UNDERFLOW, attempt to read from an empty queue
*
*/
#ifdef NO_INLINE_APIS
PUBLIC IX_STATUS
ixQMgrQBurstRead (IxQMgrQId qId,
UINT32 numEntries,
UINT32 *entries);
#else
IX_QMGR_INLINE PUBLIC IX_STATUS
ixQMgrQBurstRead (IxQMgrQId qId,
UINT32 numEntries,
UINT32 *entries);
#endif /* endif NO_INLINE_APIS */
IX_QMGR_INLINE PUBLIC IX_STATUS
ixQMgrQBurstRead (IxQMgrQId qId,
UINT32 numEntries,
UINT32 *entries)
#ifdef NO_INLINE_APIS
;
#else
{
IxQMgrQInlinedReadWriteInfo *infoPtr = &ixQMgrQInlinedReadWriteInfo[qId];
UINT32 nullCheckEntry;
if (infoPtr->qEntrySizeInWords == IX_QMGR_Q_ENTRY_SIZE1)
{
volatile UINT32 *qAccRegAddr = infoPtr->qAccRegAddr;
/* the code is optimized to take care of data dependencies:
* Durig a read, there are a few cycles needed to get the
* read complete. During these cycles, it is poossible to
* do some CPU, e.g. increment pointers and decrement
* counters.
*/
/* fetch a queue entry */
nullCheckEntry = IX_QMGR_INLINE_READ_LONG(infoPtr->qAccRegAddr);
/* iterate the specified number of queue entries */
while (--numEntries)
{
/* check the result of the previous read */
if (nullCheckEntry == 0)
{
/* if we read a NULL entry, stop. We have underflowed */
break;
}
else
{
/* write the entry */
*entries = nullCheckEntry;
/* fetch next entry */
nullCheckEntry = IX_QMGR_INLINE_READ_LONG(qAccRegAddr);
/* increment the write address */
entries++;
}
}
/* write the pre-fetched entry */
*entries = nullCheckEntry;
}
else
{
IxQMgrQEntrySizeInWords entrySizeInWords = infoPtr->qEntrySizeInWords;
/* read the specified number of queue entries */
nullCheckEntry = 0;
while (numEntries--)
{
UINT32 i;
for (i = 0; i < (UINT32)entrySizeInWords; i++)
{
*entries = IX_QMGR_INLINE_READ_LONG(infoPtr->qAccRegAddr + i);
nullCheckEntry |= *entries++;
}
/* if we read a NULL entry, stop. We have underflowed */
if (nullCheckEntry == 0)
{
break;
}
nullCheckEntry = 0;
}
}
/* reset the current read count : next access to the read function
* will force a underflow status check
*/
infoPtr->qReadCount = 0;
/* Check if underflow occurred on the read */
if (nullCheckEntry == 0 && qId < IX_QMGR_MIN_QUEUPP_QID)
{
/* get the queue status */
UINT32 status = IX_QMGR_INLINE_READ_LONG(infoPtr->qUOStatRegAddr);
if (status & infoPtr->qUflowStatBitMask)
{
/* clear the underflow status bit if it was set */
IX_QMGR_INLINE_WRITE_LONG(infoPtr->qUOStatRegAddr,
status & ~infoPtr->qUflowStatBitMask);
return IX_QMGR_Q_UNDERFLOW;
}
}
return IX_SUCCESS;
}
#endif
/**
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQPeek (IxQMgrQId qId,
unsigned int entryIndex,
UINT32 *entry)
*
* @brief Read an entry from a queue without moving the read pointer.
*
* This function inspects an entry in a queue. The entry is inspected directly
* in AQM SRAM and is not read from queue access registers. The entry is NOT removed
* from the queue and the read/write pointers are unchanged.
* N.B: The queue should not be accessed when this function is called.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
* @param entryIndex unsigned int [in] - index of entry in queue in the range
* [0].......[current number of entries in queue].
* @param *entry UINT32 [out] - pointer to the entry word(s).
*
* @return @li IX_SUCCESS, entry was successfully inspected.
* @return @li IX_QMGR_PARAMETER_ERROR, invalid paramter(s).
* @return @li IX_QMGR_Q_NOT_CONFIGURED, queue not configured for this QId.
* @return @li IX_QMGR_ENTRY_INDEX_OUT_OF_BOUNDS, an entry does not exist at
* specified index.
* @return @li IX_FAIL, failed to inpected the queue entry.
*/
PUBLIC IX_STATUS
ixQMgrQPeek (IxQMgrQId qId,
unsigned int entryIndex,
UINT32 *entry);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQWriteWithChecks (IxQMgrQId qId,
UINT32 *entry)
*
* @brief Write an entry to an AQM queue.
*
* This function will write the entry size number of words pointed to by entry to
* the queue specified by qId. The queue configuration word is read to
* determine the entry size of queue and the corresponding number of words is
* then written to the queue.
*
* @note - IX_QMGR_Q_OVERFLOW is only returned for queues 0-31 as queues 32-63
* do not have an overflow status maintained.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
* @param *entry UINT32 [in] - the word(s) to write.
*
* @return @li IX_SUCCESS, value was successfully written.
* @return @li IX_QMGR_PARAMETER_ERROR, invalid paramter(s).
* @return @li IX_QMGR_Q_NOT_CONFIGURED, queue not configured for this QId
* @return @li IX_QMGR_Q_OVERFLOW, attempt to write to a full queue
*
*/
PUBLIC IX_STATUS
ixQMgrQWriteWithChecks (IxQMgrQId qId,
UINT32 *entry);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQWrite (IxQMgrQId qId,
UINT32 *entry)
*
* @brief Fast write of an entry to a queue.
*
* This function is a heavily streamlined version of ixQMgrQWriteWithChecks(),
* but performs essentially the same task. It will write the entry size number
* of words pointed to by entry to the queue specified by qId.
*
* @note - This function is inlined, to reduce unnecessary function call
* overhead. It does not perform any parameter checks, or update any
* statistics. Also, it does not check that the queue specified by qId has
* been configured. It simply writes an entry to the queue, and checks for
* overflow.
*
* @note - IX_QMGR_Q_OVERFLOW is only returned for queues 0-31 as queues 32-63
* do not have an overflow status maintained.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
* @param *entry UINT32 [in] - pointer to the entry word(s).
*
* @return @li IX_SUCCESS, entry was successfully read.
* @return @li IX_QMGR_Q_OVERFLOW, attempt to write to a full queue
*
*/
#ifdef NO_INLINE_APIS
PUBLIC IX_STATUS
ixQMgrQWrite (IxQMgrQId qId,
UINT32 *entry);
#else
IX_QMGR_INLINE PUBLIC IX_STATUS
ixQMgrQWrite (IxQMgrQId qId,
UINT32 *entry);
#endif /* NO_INLINE_APIS */
IX_QMGR_INLINE PUBLIC IX_STATUS
ixQMgrQWrite (IxQMgrQId qId,
UINT32 *entry)
#ifdef NO_INLINE_APIS
;
#else
{
IxQMgrQInlinedReadWriteInfo *infoPtr = &ixQMgrQInlinedReadWriteInfo[qId];
UINT32 entrySize;
/* write the entry */
IX_QMGR_INLINE_WRITE_LONG(infoPtr->qAccRegAddr, *entry);
entrySize = infoPtr->qEntrySizeInWords;
if (entrySize != IX_QMGR_Q_ENTRY_SIZE1)
{
/* process the remaining part of the entry */
volatile UINT32 *qAccRegAddr = infoPtr->qAccRegAddr;
while (--entrySize)
{
++entry;
IX_QMGR_INLINE_WRITE_LONG(++qAccRegAddr, *entry);
}
entrySize = infoPtr->qEntrySizeInWords;
}
/* overflow is available for lower queues only */
if (qId < IX_QMGR_MIN_QUEUPP_QID)
{
UINT32 qSize = infoPtr->qSizeInEntries;
/* increment the current number of entries in the queue
* and check for overflow
*/
if (infoPtr->qWriteCount++ == qSize)
{
/* the queue may have overflow */
UINT32 qPtrs; /* queue internal pointers */
/* get the queue status */
UINT32 status = IX_QMGR_INLINE_READ_LONG(infoPtr->qUOStatRegAddr);
/* read the status twice because the status may
* not be immediately ready after the write operation
*/
if ((status & infoPtr->qOflowStatBitMask) ||
((status = IX_QMGR_INLINE_READ_LONG(infoPtr->qUOStatRegAddr))
& infoPtr->qOflowStatBitMask))
{
/* the queue is full, clear the overflow status
* bit if it was set
*/
IX_QMGR_INLINE_WRITE_LONG(infoPtr->qUOStatRegAddr,
status & ~infoPtr->qOflowStatBitMask);
infoPtr->qWriteCount = infoPtr->qSizeInEntries;
return IX_QMGR_Q_OVERFLOW;
}
/* No overflow occured : someone is draining the queue
* and the current counter needs to be
* updated from the current number of entries in the queue
*/
/* get q pointer snapshot */
qPtrs = IX_QMGR_INLINE_READ_LONG(infoPtr->qConfigRegAddr);
/* Mod subtraction of pointers to get number of words in Q. */
qPtrs = (qPtrs - (qPtrs >> 7)) & 0x7f;
if (qPtrs == 0)
{
/* the queue may be full at the time of the
* snapshot. Next access will check
* the overflow status again.
*/
infoPtr->qWriteCount = qSize;
}
else
{
/* convert the number of words to a number of entries */
if (entrySize == IX_QMGR_Q_ENTRY_SIZE1)
{
infoPtr->qWriteCount = qPtrs & (qSize - 1);
}
else
{
infoPtr->qWriteCount = (qPtrs / entrySize) & (qSize - 1);
}
}
}
}
return IX_SUCCESS;
}
#endif
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQBurstWrite (IxQMgrQId qId,
unsigned numEntries,
UINT32 *entries)
*
* @brief Write a number of entries to an AQM queue.
*
* This function will burst write a number of entries to the specified queue.
* The entry size of queue is auto-detected. The function will attempt to
* write as many entries as specified by the numEntries parameter and will
* return an OVERFLOW if any one of the individual entry writes fail.
*
* @warning
* IX_QMGR_Q_OVERFLOW is only returned for queues 0-31 as queues 32-63
* do not have an overflow status maintained, hence there is a potential for
* silent failure here. This function must be used with caution.
*
* @note
* This function is intended for fast population of queues, so to make it
* as efficient as possible, it has the following features:
* - This function is inlined, to reduce unnecessary function call overhead.
* - It does not perform any parameter checks, or update any statistics.
* - It does not check that the queue specified by qId has been configured.
* - It does not check that the queue has enough free space to hold the entries
* before writing, and only checks for overflow after all writes have been
* performed. Therefore, the client should ensure before calling this function
* that there is enough free space in the queue to hold the number of entries
* to be written. ixQMgrQWrite() or ixQMgrQWriteWithChecks(), which only writes
* a single queue entry per call, should be used instead if the user requires
* checks for OVERFLOW after each entry written.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
* @param numEntries unsigned [in] - the number of entries to write.
* @param *entries UINT32 [in] - the word(s) to write.
*
* @return @li IX_SUCCESS, value was successfully written.
* @return @li IX_QMGR_Q_OVERFLOW, attempt to write to a full queue
*
*/
#ifdef NO_INLINE_APIS
PUBLIC IX_STATUS
ixQMgrQBurstWrite (IxQMgrQId qId,
unsigned numEntries,
UINT32 *entries);
#else
IX_QMGR_INLINE PUBLIC IX_STATUS
ixQMgrQBurstWrite (IxQMgrQId qId,
unsigned numEntries,
UINT32 *entries);
#endif /* NO_INLINE_APIS */
IX_QMGR_INLINE PUBLIC IX_STATUS
ixQMgrQBurstWrite (IxQMgrQId qId,
unsigned numEntries,
UINT32 *entries)
#ifdef NO_INLINE_APIS
;
#else
{
IxQMgrQInlinedReadWriteInfo *infoPtr = &ixQMgrQInlinedReadWriteInfo[qId];
UINT32 status;
/* update the current write count */
infoPtr->qWriteCount += numEntries;
if (infoPtr->qEntrySizeInWords == IX_QMGR_Q_ENTRY_SIZE1)
{
volatile UINT32 *qAccRegAddr = infoPtr->qAccRegAddr;
while (numEntries--)
{
IX_QMGR_INLINE_WRITE_LONG(qAccRegAddr, *entries);
entries++;
}
}
else
{
IxQMgrQEntrySizeInWords entrySizeInWords = infoPtr->qEntrySizeInWords;
UINT32 i;
/* write each queue entry */
while (numEntries--)
{
/* write the queueEntrySize number of words for each entry */
for (i = 0; i < (UINT32)entrySizeInWords; i++)
{
IX_QMGR_INLINE_WRITE_LONG((infoPtr->qAccRegAddr + i), *entries);
entries++;
}
}
}
/* check if the write count overflows */
if (infoPtr->qWriteCount > infoPtr->qSizeInEntries)
{
/* reset the current write count */
infoPtr->qWriteCount = infoPtr->qSizeInEntries;
}
/* Check if overflow occurred on the write operation */
if (qId < IX_QMGR_MIN_QUEUPP_QID)
{
/* get the queue status */
status = IX_QMGR_INLINE_READ_LONG(infoPtr->qUOStatRegAddr);
/* read the status twice because the status may
* not be ready at the time of the write
*/
if ((status & infoPtr->qOflowStatBitMask) ||
((status = IX_QMGR_INLINE_READ_LONG(infoPtr->qUOStatRegAddr))
& infoPtr->qOflowStatBitMask))
{
/* clear the underflow status bit if it was set */
IX_QMGR_INLINE_WRITE_LONG(infoPtr->qUOStatRegAddr,
status & ~infoPtr->qOflowStatBitMask);
return IX_QMGR_Q_OVERFLOW;
}
}
return IX_SUCCESS;
}
#endif
/**
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQPoke (IxQMgrQId qId,
unsigned int entryIndex,
UINT32 *entry)
*
* @brief Write an entry to a queue without moving the write pointer.
*
* This function modifies an entry in a queue. The entry is modified directly
* in AQM SRAM and not using the queue access registers. The entry is NOT added to the
* queue and the read/write pointers are unchanged.
* N.B: The queue should not be accessed when this function is called.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
* @param entryIndex unsigned int [in] - index of entry in queue in the range
* [0].......[current number of entries in queue].
* @param *entry UINT32 [in] - pointer to the entry word(s).
*
* @return @li IX_SUCCESS, entry was successfully modified.
* @return @li IX_QMGR_PARAMETER_ERROR, invalid paramter(s).
* @return @li IX_QMGR_Q_NOT_CONFIGURED, queue not configured for this QId.
* @return @li IX_QMGR_ENTRY_INDEX_OUT_OF_BOUNDS, an entry does not exist at
* specified index.
* @return @li IX_FAIL, failed to modify the queue entry.
*/
PUBLIC IX_STATUS
ixQMgrQPoke (IxQMgrQId qId,
unsigned int entryIndex,
UINT32 *entry);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQNumEntriesGet (IxQMgrQId qId,
unsigned *numEntries)
*
* @brief Get a snapshot of the number of entries in a queue.
*
* This function gets the number of entries in a queue.
*
* @param qId @ref IxQMgrQId [in] qId - the queue idenfifier
* @param *numEntries unsigned [out] - the number of entries in a queue
*
* @return @li IX_SUCCESS, got the number of entries for the queue
* @return @li IX_QMGR_PARAMETER_ERROR, invalid paramter(s).
* @return @li IX_QMGR_Q_NOT_CONFIGURED, the specified qId has not been configured
* @return @li IX_QMGR_WARNING, could not determine num entries at this time
*
*/
PUBLIC IX_STATUS
ixQMgrQNumEntriesGet (IxQMgrQId qId,
unsigned *numEntries);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQStatusGetWithChecks (IxQMgrQId qId,
IxQMgrQStatus *qStatus)
*
* @brief Get a queues status.
*
* This function reads the specified queues status. A queues status is defined
* by its status flags. For queues 0-31 these flags are E,NE,NF,F. For
* queues 32-63 these flags are NE and F.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
* @param &qStatus @ref IxQMgrQStatus [out] - the status of the specified queue.
*
* @return @li IX_SUCCESS, queue status was successfully read.
* @return @li IX_QMGR_Q_NOT_CONFIGURED, the specified qId has not been configured
* @return @li IX_QMGR_PARAMETER_ERROR, invalid paramter.
*
*/
PUBLIC IX_STATUS
ixQMgrQStatusGetWithChecks (IxQMgrQId qId,
IxQMgrQStatus *qStatus);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrQStatusGet (IxQMgrQId qId,
IxQMgrQStatus *qStatus)
*
* @brief Fast get of a queue's status.
*
* This function is a streamlined version of ixQMgrQStatusGetWithChecks(), but
* performs essentially the same task. It reads the specified queue's status.
* A queues status is defined by its status flags. For queues 0-31 these flags
* are E,NE,NF,F. For queues 32-63 these flags are NE and F.
*
* @note - This function is inlined, to reduce unnecessary function call
* overhead. It does not perform any parameter checks, or update any
* statistics. Also, it does not check that the queue specified by qId has
* been configured. It simply reads the specified queue's status.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier.
* @param *qStatus @ref IxQMgrQStatus [out] - the status of the specified queue.
*
* @return @li void.
*
*/
#ifdef NO_INLINE_APIS
PUBLIC IX_STATUS
ixQMgrQStatusGet (IxQMgrQId qId,
IxQMgrQStatus *qStatus);
#else
extern UINT32 ixQMgrAqmIfQueLowStatRegAddr[];
extern UINT32 ixQMgrAqmIfQueLowStatBitsOffset[];
extern UINT32 ixQMgrAqmIfQueLowStatBitsMask;
extern UINT32 ixQMgrAqmIfQueUppStat0RegAddr;
extern UINT32 ixQMgrAqmIfQueUppStat1RegAddr;
extern UINT32 ixQMgrAqmIfQueUppStat0BitMask[];
extern UINT32 ixQMgrAqmIfQueUppStat1BitMask[];
IX_QMGR_INLINE PUBLIC IX_STATUS
ixQMgrQStatusGet (IxQMgrQId qId,
IxQMgrQStatus *qStatus);
#endif /* endif NO_INLINE_APIS */
IX_QMGR_INLINE PUBLIC IX_STATUS
ixQMgrQStatusGet (IxQMgrQId qId,
IxQMgrQStatus *qStatus)
#ifdef NO_INLINE_APIS
;
#else
{
/* read the status of a queue in the range 0-31 */
if (qId < IX_QMGR_MIN_QUEUPP_QID)
{
volatile UINT32 *lowStatRegAddr = (UINT32*)ixQMgrAqmIfQueLowStatRegAddr[qId];
UINT32 lowStatBitsOffset = ixQMgrAqmIfQueLowStatBitsOffset[qId];
UINT32 lowStatBitsMask = ixQMgrAqmIfQueLowStatBitsMask;
/* read the status register for this queue */
*qStatus = IX_QMGR_INLINE_READ_LONG(lowStatRegAddr);
/* mask out the status bits relevant only to this queue */
*qStatus = (*qStatus >> lowStatBitsOffset) & lowStatBitsMask;
}
else /* read status of a queue in the range 32-63 */
{
volatile UINT32 *qNearEmptyStatRegAddr = (UINT32*)ixQMgrAqmIfQueUppStat0RegAddr;
volatile UINT32 *qFullStatRegAddr = (UINT32*)ixQMgrAqmIfQueUppStat1RegAddr;
int maskIndex = qId - IX_QMGR_MIN_QUEUPP_QID;
UINT32 qNearEmptyStatBitMask = ixQMgrAqmIfQueUppStat0BitMask[maskIndex];
UINT32 qFullStatBitMask = ixQMgrAqmIfQueUppStat1BitMask[maskIndex];
/* Reset the status bits */
*qStatus = 0;
/* Check if the queue is nearly empty */
if (IX_QMGR_INLINE_READ_LONG(qNearEmptyStatRegAddr) & qNearEmptyStatBitMask)
{
*qStatus |= IX_QMGR_Q_STATUS_NE_BIT_MASK;
}
/* Check if the queue is full */
if (IX_QMGR_INLINE_READ_LONG(qFullStatRegAddr) & qFullStatBitMask)
{
*qStatus |= IX_QMGR_Q_STATUS_F_BIT_MASK;
}
}
return IX_SUCCESS;
}
#endif
/* ------------------------------------------------------------
Queue dispatch related functions
---------------------------------------------------------- */
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrDispatcherPrioritySet (IxQMgrQId qId,
IxQMgrPriority priority)
*
* @brief Set the dispatch priority of a queue.
*
* This function is called to set the dispatch priority of queue. The effect of
* this function is to add a priority change request to a queue. This queue is
* serviced by @a ixQMgrDispatcherLoopRunA0, @a ixQMgrDispatcherLoopRunB0 or
* @a ixQMgrDispatcherLoopRunB0LLP.
*
* This function is re-entrant. and can be used from an interrupt context
*
* @param qId @ref IxQMgrQId [in] - the queue identifier
* @param priority @ref IxQMgrPriority [in] - the new queue dispatch priority
*
* @return @li IX_SUCCESS, priority change request is queued
* @return @li IX_QMGR_Q_NOT_CONFIGURED, the specified qId has not been configured
* @return @li IX_QMGR_Q_INVALID_PRIORITY, specified priority is invalid
*
*/
PUBLIC IX_STATUS
ixQMgrDispatcherPrioritySet (IxQMgrQId qId,
IxQMgrPriority priority);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrNotificationEnable (IxQMgrQId qId,
IxQMgrSourceId sourceId)
*
* @brief Enable notification on a queue for a specified queue source flag.
*
* This function is called by a client of the QMgr to enable notifications on a
* specified condition.
* If the condition for the notification is set after the client has called this
* function but before the function has enabled the interrupt source, then the
* notification will not occur.
* For queues 32-63 the notification source is fixed to the NE(Nearly Empty) flag
* and cannot be changed so the sourceId parameter is ignored for these queues.
* The status register is read before the notofication is enabled and is read again
* after the notification has been enabled, if they differ then the warning status
* is returned.
*
* This function is re-entrant. and can be used from an interrupt context
*
* @param qId @ref IxQMgrQId [in] - the queue identifier
* @param sourceId @ref IxQMgrSourceId [in] - the interrupt src condition identifier
*
* @return @li IX_SUCCESS, the interrupt has been enabled for the specified source
* @return @li IX_QMGR_Q_NOT_CONFIGURED, the specified qId has not been configured
* @return @li IX_QMGR_INVALID_INT_SOURCE_ID, interrupt source invalid for this queue
* @return @li IX_QMGR_WARNING, the status register may not be constistent
*
*/
PUBLIC IX_STATUS
ixQMgrNotificationEnable (IxQMgrQId qId,
IxQMgrSourceId sourceId);
/**
* @ingroup IxQMgrAPI
*
* @fn ixQMgrNotificationDisable (IxQMgrQId qId)
*
* @brief Disable notifications on a queue.
*
* This function is called to disable notifications on a specified queue.
*
* This function is re-entrant. and can be used from an interrupt context
*
* @param qId @ref IxQMgrQId [in] - the queue identifier
*
* @return @li IX_SUCCESS, the interrupt has been disabled
* @return @li IX_QMGR_Q_NOT_CONFIGURED, the specified qId has not been configured
*
*/
PUBLIC IX_STATUS
ixQMgrNotificationDisable (IxQMgrQId qId);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrDispatcherLoopRunA0 (IxQMgrDispatchGroup group)
*
* @brief Run the callback dispatcher.
*
* This function runs the dispatcher for a group of queues.
* Callbacks are made for interrupts that have occurred on queues within
* the group that have registered callbacks. The order in which queues are
* serviced depends on the queue priorities set by the client.
* This function may be called from interrupt or task context.
* For optimisations that were introduced in IXP42X B0 and supported IXP46X
* the @a ixQMgrDispatcherLoopRunB0, or @a ixQMgrDispatcherLoopRunB0LLP
* should be used.
*
* This function is not re-entrant.
*
* @param group @ref IxQMgrDispatchGroup [in] - the group of queues over which the
* dispatcher will run
*
* @return @li void
*
* @note This function may be called from interrupt or task context.
* However, for optimal performance the choice of context depends also on the
* operating system used.
*
*/
PUBLIC void
ixQMgrDispatcherLoopRunA0 (IxQMgrDispatchGroup group);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrDispatcherLoopRunB0 (IxQMgrDispatchGroup group)
*
* @brief Run the callback dispatcher.
*
* The enhanced version of @a ixQMgrDispatcherLoopRunA0 that is optimised for
* features introduced in IXP42X B0 silicon and supported on IXP46X.
* This is the default dispatcher for IXP42X B0 and IXP46X silicon.
* The function runs the dispatcher for a group of queues.
* Callbacks are made for interrupts that have occurred on queues within
* the group that have registered callbacks. The order in which queues are
* serviced depends on the queue priorities set by the client.
* This function may be called from interrupt or task context.
*
* This function is not re-entrant.
*
* @param group @ref IxQMgrDispatchGroup [in] - the group of queues over which the
* dispatcher will run
*
* @return @li void
*
*
* @note This function may be called from interrupt or task context.
* However, for optimal performance the choice of context depends also on the
* operating system used.
*
*/
PUBLIC void
ixQMgrDispatcherLoopRunB0 (IxQMgrDispatchGroup group);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrDispatcherLoopRunB0LLP (IxQMgrDispatchGroup group)
*
* @brief Run the callback dispatcher.
*
* This is a version of the optimised dispatcher for IXP42X B0 and IXP46X,
* @a ixQMgrDispatcherLoopRunB0, with added support for livelock prevention.
* This dispatcher will only be used for the IXP42X B0 or IXP46X silicon if
* feature control indicates that IX_FEATURECTRL_ORIGB0_DISPATCHER is set to
* IX_FEATURE_CTRL_SWCONFIG_DISABLED. Otherwise the @a ixQMgrDispatcherLoopRunB0
* dispatcher will be used (Default).
*
* When this dispatcher notifies for a queue that is type
* IX_QMGR_TYPE_REALTIME_PERIODIC, notifications for queues that are set
* as type IX_QMGR_REALTIME_SPORADIC are not processed and disabled.
* This helps prevent any tasks resulting from the notification of the
* IX_QMGR_TYPE_REALTIME_PERIODIC type queue to being subject to livelock.
* The function runs the dispatcher for a group of queues.
* Callbacks are made for interrupts that have occurred on queues within
* the group that have registered callbacks. The order in which queues are
* serviced depends on their type along with the queue priorities set by the
* client. This function may be called from interrupt or task context.
*
* This function is not re-entrant.
*
* @param group @ref IxQMgrDispatchGroup [in] - the group of queues over which
* the dispatcher will run
*
* @return @li void
*
* @note This function may be called from interrupt or task context.
* However, for optimal performance the choice of context depends also on the
* operating system used.
*
*/
PUBLIC void
ixQMgrDispatcherLoopRunB0LLP (IxQMgrDispatchGroup group);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrNotificationCallbackSet (IxQMgrQId qId,
IxQMgrCallback callback,
IxQMgrCallbackId callbackId)
*
* @brief Set the notification callback for a queue.
*
* This function sets the callback for the specified queue. This callback will
* be called by the dispatcher, and may be called in the context of a interrupt
* If callback has a value of NULL the previously registered callback, if one
* exists will be unregistered.
*
* @param qId @ref IxQMgrQId [in] - the queue idenfifier
* @param callback @ref IxQMgrCallback [in] - the callback registered for this queue
* @param callbackId @ref IxQMgrCallbackId [in] - the callback identifier
*
* @return @li IX_SUCCESS, the callback for the specified queue has been set
* @return @li IX_QMGR_Q_NOT_CONFIGURED, the specified qId has not been configured
*
*/
PUBLIC IX_STATUS
ixQMgrNotificationCallbackSet (IxQMgrQId qId,
IxQMgrCallback callback,
IxQMgrCallbackId callbackId);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrDispatcherLoopGet (IxQMgrDispatcherFuncPtr *qDispatcherFuncPtr)
*
* @brief Get QMgr DispatcherLoopRun for respective silicon device
*
* This function gets a function pointer to ixQMgrDispatcherLoopRunA0() for IXP42X A0
* Silicon. If the IXP42X B0 or 46X Silicon, the default is the ixQMgrDispatcherLoopRunB0()
* function, however if live lock prevention is enabled a function pointer to
* ixQMgrDispatcherLoopRunB0LLP() is given.
*
* @param *qDispatchFuncPtr @ref IxQMgrDispatcherFuncPtr [out] -
* the function pointer of QMgr Dispatcher
*
*/
PUBLIC void
ixQMgrDispatcherLoopGet (IxQMgrDispatcherFuncPtr *qDispatcherFuncPtr);
/**
*
* @ingroup IxQMgrAPI
*
* @fn ixQMgrStickyInterruptRegEnable(void)
*
* @brief Enable AQM's sticky interrupt register behaviour only available
* on B0 Silicon.
*
* When AQM's sticky interrupt register is enabled, interrupt register bit will
* only be cleared when a '1' is written to interrupt register bit and the
* interrupting condition is satisfied, i.e.queue condition does not exist.
*
* @note This function must be called before any queue is enabled.
* Calling this function after queue is enabled will cause
* undefined results.
*
* @return none
*
*/
PUBLIC void
ixQMgrStickyInterruptRegEnable(void);
/**
* @ingroup IxQMgrAPI
*
* @fn ixQMgrCallbackTypeSet(IxQMgrQId qId,
IxQMgrType type)
*
* @brief Set the Callback Type of a queue.
*
* This function is only used for live lock prevention.
* This function allows the callback type of a queue to be set. The default for
* all queues is IX_QMGR_TYPE_REALTIME_OTHER. Setting the type to
* IX_QMGR_TYPE_REALTIME_SPORADIC means that this queue will have it's
* notifications disabled while there is a task associated with a
* queue of type IX_QMGR_TYPE_REALTIME_PERIODIC running. As live lock
* prevention operates on lower queues, this function should
* be called for lower queues only.
* This function is not re-entrant.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier
* @param type @ref IxQMgrType [in] - the type of callback
*
* @return @li IX_SUCCESS, successfully set callback type for the queue entry
* @return @li IX_QMGR_Q_NOT_CONFIGURED, queue not configured for this QId
* @return @li IX_QMGR_PARAMETER_ERROR, invalid parameter(s).
*
*/
PUBLIC IX_STATUS
ixQMgrCallbackTypeSet(IxQMgrQId qId,
IxQMgrType type);
/**
* @ingroup IxQMgrAPI
*
* @fn ixQMgrCallbackTypeGet(IxQMgrQId qId,
IxQMgrType *type)
*
* @brief Get the Callback Type of a queue.
*
* This function allows the callback type of a queue to be got. As live lock
* prevention operates on lower queues, this function should
* be called for lower queues only.
* This function is re-entrant.
*
* @param qId @ref IxQMgrQId [in] - the queue identifier
* @param *type @ref IxQMgrType [out] - the type of callback
*
* @return @li IX_SUCCESS, successfully set callback type for the queue entry
* @return @li IX_QMGR_Q_NOT_CONFIGURED, queue not configured for this QId
* @return @li IX_QMGR_PARAMETER_ERROR, invalid parameter(s)
*
*/
PUBLIC IX_STATUS
ixQMgrCallbackTypeGet(IxQMgrQId qId,
IxQMgrType *type);
/**
* @ingroup IxQMgrAPI
*
* @fn ixQMgrPeriodicDone(void)
*
* @brief Indicate that the Periodic task is completed for LLP
*
* This function is used as part of live lock prevention.
* A periodic task is a task that results from a queue that
* is set as type IX_QMGR_TYPE_REALTIME_PERIODIC. This function
* should be called to indicate to the dispatcher that the
* the periodic task is completed. This ensures that the notifications
* for queues set as type sporadic queues are re-enabled.
* This function is re-entrant.
*
*/
PUBLIC void
ixQMgrPeriodicDone(void);
/**
* @ingroup IxQMgrAPI
*
* @fn ixQMgrLLPShow(int resetStats)
*
* @brief Print out the live lock prevention statistics when in debug mode.
*
* This function prints out statistics related to the livelock. These
* statistics are only collected in debug mode.
* This function is not re-entrant.
*
* @param resetStats @ref int [in] - if set the the stats are reset.
*
*/
PUBLIC void
ixQMgrLLPShow(int resetStats);
#endif /* IXQMGR_H */
/**
* @} defgroup IxQMgrAPI
*/