MessageQ.h

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/*
 * Copyright (c) 2012-2013, Texas Instruments Incorporated
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * *  Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * *  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.
 *
 * *  Neither the name of Texas Instruments Incorporated nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * 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.
 */

#ifndef ti_ipc_MessageQ__include
#define ti_ipc_MessageQ__include

#include <ti/ipc/MultiProc.h>

#if defined (__cplusplus)
extern "C" {
#endif

/* =============================================================================
 *  All success and failure codes for the module
 * =============================================================================
 */

#define MessageQ_S_BUSY                  2

#define MessageQ_S_ALREADYSETUP          1

#define MessageQ_S_SUCCESS               0

#define MessageQ_E_FAIL                 -1

#define MessageQ_E_INVALIDARG           -2

#define MessageQ_E_MEMORY               -3

#define MessageQ_E_ALREADYEXISTS        -4

#define MessageQ_E_NOTFOUND             -5

#define MessageQ_E_TIMEOUT              -6

#define MessageQ_E_INVALIDSTATE         -7

#define MessageQ_E_OSFAILURE            -8

#define MessageQ_E_RESOURCE             -9

#define MessageQ_E_RESTART              -10

#define MessageQ_E_INVALIDMSG           -11

#define MessageQ_E_NOTOWNER             -12

#define MessageQ_E_REMOTEACTIVE         -13

#define MessageQ_E_INVALIDHEAPID        -14

#define MessageQ_E_INVALIDPROCID        -15

#define MessageQ_E_MAXREACHED           -16

#define MessageQ_E_UNREGISTEREDHEAPID   -17

#define MessageQ_E_CANNOTFREESTATICMSG  -18

#define MessageQ_E_UNBLOCKED            -19

/* =============================================================================
 *  Macros
 * =============================================================================
 */

#define MessageQ_FOREVER                ~(0)

#define MessageQ_INVALIDMSGID           0xffff

#define MessageQ_INVALIDMESSAGEQ        0xffff

#define MessageQ_PRIORITYMASK           0x3

#define MessageQ_getDstQueue(msg)                                             \
        ((msg)->dstId == (MessageQ_QueueIndex)MessageQ_INVALIDMESSAGEQ) ?     \
            (MessageQ_QueueId)MessageQ_INVALIDMESSAGEQ :                      \
            (MessageQ_QueueId)(((MessageQ_QueueId)MultiProc_self() << 16u)    \
            | (((MessageQ_Msg)(msg))->dstId))


#define MessageQ_getMsgId(msg) (((MessageQ_Msg) (msg))->msgId)

#define MessageQ_getMsgSize(msg) (((MessageQ_Msg) (msg))->msgSize)

#define MessageQ_getMsgPri(msg)        \
                 ((((MessageQ_Msg) (msg))->flags & MessageQ_PRIORITYMASK))

#define MessageQ_getProcId(queueId)     \
                 ((UInt16)((queueId) >> 16))

#define MessageQ_getReplyQueue(msg)           \
                (MessageQ_QueueId)((((MessageQ_Msg) (msg))->replyProc << 16u) \
                | ((MessageQ_Msg)(msg))->replyId)

#define MessageQ_setMsgId(msg, id) ((MessageQ_Msg) (msg))->msgId = (id)

#define MessageQ_setMsgPri(msg, priority) \
        (((MessageQ_Msg) (msg))->flags = ((priority) & MessageQ_PRIORITYMASK))

/* =============================================================================
 *  Structures & Enums
 * =============================================================================
 */

typedef UInt32 MessageQ_QueueId;

typedef UInt16 MessageQ_QueueIndex;

typedef struct MessageQ_Object *MessageQ_Handle;

typedef struct {
    Void *synchronizer;
} MessageQ_Params;

typedef struct {
    Bits32       reserved0;         
    Bits32       reserved1;         
    Bits32       msgSize;           
    Bits16       flags;             
    Bits16       msgId;             
    Bits16       dstId;             
    Bits16       dstProc;           
    Bits16       replyId;           
    Bits16       replyProc;         
    Bits16       srcProc;           
    Bits16       heapId;            
    Bits16       seqNum;            
    Bits16       reserved;          
} MessageQ_MsgHeader;

typedef MessageQ_MsgHeader *MessageQ_Msg;

typedef enum {
    MessageQ_NORMALPRI      = 0,    
    MessageQ_HIGHPRI        = 1,    
    MessageQ_RESERVEDPRI    = 2,    
    MessageQ_URGENTPRI      = 3     
} MessageQ_Priority;


/* =============================================================================
 *  MessageQ Module-wide Functions
 * =============================================================================
 */

Void MessageQ_Params_init(MessageQ_Params *params);

MessageQ_Handle MessageQ_create(String name, const MessageQ_Params *params);

Int MessageQ_delete(MessageQ_Handle *handlePtr);

Int MessageQ_open(String name, MessageQ_QueueId *queueId);

Int MessageQ_close(MessageQ_QueueId *queueId);

MessageQ_Msg MessageQ_alloc(UInt16 heapId, UInt32 size);

Int MessageQ_free(MessageQ_Msg msg);

Int MessageQ_registerHeap(Ptr heap, UInt16 heapId);

Int MessageQ_unregisterHeap(UInt16 heapId);

Void MessageQ_setMsgTrace(MessageQ_Msg msg, Bool traceFlag);

Void MessageQ_staticMsgInit(MessageQ_Msg msg, UInt32 size);

/* =============================================================================
 *  MessageQ Per-instance Functions
 * =============================================================================
 */

Int MessageQ_get(MessageQ_Handle handle, MessageQ_Msg *msg, UInt timeout);

Int MessageQ_put(MessageQ_QueueId queueId, MessageQ_Msg msg);

Int MessageQ_count(MessageQ_Handle handle);

UInt32 MessageQ_getQueueId(MessageQ_Handle handle);

Void MessageQ_setReplyQueue(MessageQ_Handle handle, MessageQ_Msg msg);

Void MessageQ_unblock(MessageQ_Handle handle);

#if defined (__cplusplus)
}
#endif /* defined (__cplusplus) */
#endif /* ti_ipc_MessageQ__include */