/*
* ======== WMD_MSG_Create ========
* Create an object to manage message queues. Only one of these objects
* can exist per device object.
*/
DSP_STATUS WMD_MSG_Create(OUT struct MSG_MGR **phMsgMgr,
struct DEV_OBJECT *hDevObject, MSG_ONEXIT msgCallback)
{
struct MSG_MGR *pMsgMgr;
struct IO_MGR *hIOMgr;
DSP_STATUS status = DSP_SOK;
if (!phMsgMgr || !msgCallback || !hDevObject) {
status = DSP_EPOINTER;
goto func_end;
}
DEV_GetIOMgr(hDevObject, &hIOMgr);
if (!hIOMgr) {
status = DSP_EPOINTER;
goto func_end;
}
*phMsgMgr = NULL;
/* Allocate MSG manager object */
MEM_AllocObject(pMsgMgr, struct MSG_MGR, MSGMGR_SIGNATURE);
if (pMsgMgr) {
pMsgMgr->onExit = msgCallback;
pMsgMgr->hIOMgr = hIOMgr;
/* List of MSG_QUEUEs */
pMsgMgr->queueList = LST_Create();
/* Queues of message frames for messages to the DSP. Message
* frames will only be added to the free queue when a
* MSG_QUEUE object is created. */
pMsgMgr->msgFreeList = LST_Create();
pMsgMgr->msgUsedList = LST_Create();
if (pMsgMgr->queueList == NULL ||
pMsgMgr->msgFreeList == NULL ||
pMsgMgr->msgUsedList == NULL)
status = DSP_EMEMORY;
if (DSP_SUCCEEDED(status))
status = SYNC_InitializeDPCCS(&pMsgMgr->hSyncCS);
/* Create an event to be used by WMD_MSG_Put() in waiting
* for an available free frame from the message manager. */
if (DSP_SUCCEEDED(status))
status = SYNC_OpenEvent(&pMsgMgr->hSyncEvent, NULL);
if (DSP_SUCCEEDED(status))
*phMsgMgr = pMsgMgr;
else
DeleteMsgMgr(pMsgMgr);
} else {
status = DSP_EMEMORY;
}
func_end:
return status;
}
DSP_STATUS CHNLSM_EnableInterrupt(struct WMD_DEV_CONTEXT *pDevContext)
{
DSP_STATUS status = DSP_SOK;
u32 numMbxMsg;
u32 mbxValue;
struct CFG_HOSTRES resources;
u32 devType;
struct IO_MGR *hIOMgr;
DBG_Trace(DBG_ENTER, "CHNLSM_EnableInterrupt(0x%x)\n", pDevContext);
/* Read the messages in the mailbox until the message queue is empty */
CFG_GetHostResources((struct CFG_DEVNODE *)DRV_GetFirstDevExtension(),
&resources);
DEV_GetDevType(pDevContext->hDevObject, &devType);
status = DEV_GetIOMgr(pDevContext->hDevObject, &hIOMgr);
if (devType == DSP_UNIT) {
HW_MBOX_NumMsgGet(resources.dwMboxBase,
MBOX_DSP2ARM, &numMbxMsg);
while (numMbxMsg != 0) {
HW_MBOX_MsgRead(resources.dwMboxBase,
MBOX_DSP2ARM,
&mbxValue);
numMbxMsg--;
}
/* clear the DSP mailbox as well...*/
HW_MBOX_NumMsgGet(resources.dwMboxBase,
MBOX_ARM2DSP, &numMbxMsg);
while (numMbxMsg != 0) {
HW_MBOX_MsgRead(resources.dwMboxBase,
MBOX_ARM2DSP, &mbxValue);
numMbxMsg--;
udelay(10);
HW_MBOX_EventAck(resources.dwMboxBase, MBOX_ARM2DSP,
HW_MBOX_U1_DSP1,
HW_MBOX_INT_NEW_MSG);
}
/* Enable the new message events on this IRQ line */
HW_MBOX_EventEnable(resources.dwMboxBase,
MBOX_DSP2ARM,
MBOX_ARM,
HW_MBOX_INT_NEW_MSG);
}
return status;
}
