Notify_module和ArchIpcInt_object
现在我们来看看关于Notify_module->notifyHandles [procId][lineId]这个结构是如何赋值的：
主要就是通过下面三个函数：
Int NotifySetupDm8168_attach (UInt16 procId, Ptr sharedAddr)
{
NotifySetup_driverHandle [procId] = NotifyDriverShm_create(¬ifyShmParams);
NotifySetup_notifyHandle [procId] = Notify_create (
NotifySetup_driverHandle [procId],
procId,
0u,
NULL);
............................................................
}
INotifyDriver_Handle NotifyDriverShm_create (const NotifyDriverShm_Params * params)
{
NotifyDriverShm_Object * obj = NULL;
INotifyDriver_Object * notifyDrvObj = NULL;
notifyDrvObj = Memory_calloc (NULL,
sizeof (INotifyDriver_Object),
0u,
NULL);
notifyDrvObj->fxnTable.registerEvent = (INotifyDriver_RegisterEventFxn)
&NotifyDriverShm_registerEvent;
notifyDrvObj->fxnTable.unregisterEvent =(INotifyDriver_UnregisterEventFxn)
&NotifyDriverShm_unregisterEvent;
notifyDrvObj->fxnTable.sendEvent = (INotifyDriver_SendEventFxn)
&NotifyDriverShm_sendEvent;
notifyDrvObj->fxnTable.disable = (INotifyDriver_DisableFxn)
&NotifyDriverShm_disable;
notifyDrvObj->fxnTable.enable = (INotifyDriver_EnableFxn)
&NotifyDriverShm_enable;
notifyDrvObj->fxnTable.disableEvent= (INotifyDriver_DisableEventFxn)
&NotifyDriverShm_disableEvent;
notifyDrvObj->fxnTable.enableEvent = (INotifyDriver_EnableEventFxn)
&NotifyDriverShm_enableEvent;
notifyDrvObj->fxnTable.setNotifyHandle =(INotifyDriver_SetNotifyHandleFxn)
&NotifyDriverShm_setNotifyHandle;
obj = Memory_calloc (NULL,
sizeof (NotifyDriverShm_Object),
0u,
NULL);
notifyDrvObj->obj = obj;
obj->numEvents = Notify_state.cfg.numEvents;
procCtrlSize = _Ipc_roundup(sizeof (NotifyDriverShm_ProcCtrl), minAlign);
obj->eventEntrySize = _Ipc_roundup(sizeof(NotifyDriverShm_EventEntry), minAlign);
obj->selfProcCtrl = (NotifyDriverShm_ProcCtrl *)
( (UInt32) params->sharedAddr + (obj->selfId * procCtrlSize));
obj->otherProcCtrl = (NotifyDriverShm_ProcCtrl *)
( (UInt32) params->sharedAddr + (obj->otherId * procCtrlSize));
obj->selfEventChart = (NotifyDriverShm_EventEntry *)( (UInt32) params->sharedAddr
+ (2 * procCtrlSize) + (obj->eventEntrySize * obj->numEvents * obj->selfId));
obj->otherEventChart = (NotifyDriverShm_EventEntry *)( (UInt32) params->sharedAddr
+ (2 * procCtrlSize) + (obj->eventEntrySize * obj->numEvents * obj->otherId));
ArchIpcInt_interruptRegister (obj->remoteProcId, /* 这里还有一个重要
obj->params.localIntId, 的函数中断注册,
_NotifyDriverShm_ISR, 这个暂时先不考虑
(Ptr) obj); */
...............................
return ((INotifyDriver_Handle) notifyDrvObj);
}
Notify_Handle Notify_create ( INotifyDriver_Handle driverHandle,
UInt16 remoteProcId,
UInt16 lineId,
const Notify_Params * params)
{
Notify_Object * obj = NULL;
obj = Memory_calloc (NULL, sizeof (Notify_Object), 0u, NULL);
obj->remoteProcId = remoteProcId;
obj->lineId = lineId;
obj->nesting = 0;
for (i = 0; i < Notify_module->cfg.numEvents; i++)
{
List_Params_init (&listparams);
List_construct (&(obj->eventList [i]), &listparams);
}
obj->driverHandle = driverHandle;
INotifyDriver_setNotifyHandle (driverHandle, obj);
Notify_module->notifyHandles [remoteProcId][lineId] = obj;
上面这条语句即将Notify_Object 此结构体的值赋给了Notify_module;
...........................
return ((Notify_Handle) obj);
}
注意：
/******************************************************************************
* INotifyDriver_setNotifyHandle (driverHandle, obj);其实就是实现这个功能 *
* driverHandle->obj->notifyHandle = obj *
* Notify_Object这个结构体在注册回调函数中有大用处，这里先不考虑， *
* 只弄清Notify_module->notifyHandles [procId][lineId];中对应的两个值就好了。 *
*******************************************************************************
全局变量ArchIpcInt_object的赋值部分很简单，主要由以下就很清楚：
ArchIpcInt_FxnTable Dm8168IpcInt_fxnTable = {
Dm8168IpcInt_interruptRegister,
Dm8168IpcInt_interruptUnregister,
Dm8168IpcInt_interruptEnable,
Dm8168IpcInt_interruptDisable,
Dm8168IpcInt_waitClearInterrupt,
Dm8168IpcInt_sendInterrupt,
Dm8168IpcInt_clearInterrupt,
};
Void Dm8168IpcInt_setup (Dm8168IpcInt_Config * cfg)
{
mapInfo.src = AINTC_BASE_ADDR;
mapInfo.size = AINTC_BASE_SIZE;
mapInfo.isCached = FALSE;
Memory_map (&mapInfo);
Dm8168IpcInt_state.archCoreCmBase = mapInfo.dst;
mapInfo.src = MAILBOX_BASE;
mapInfo.size = MAILBOX_SIZE;
mapInfo.isCached = FALSE;
Memory_map (&mapInfo);
Dm8168IpcInt_state.mailboxBase = mapInfo.dst;
ArchIpcInt_object.fxnTable = &Dm8168IpcInt_fxnTable;
ArchIpcInt_object.obj = &Dm8168IpcInt_state;
for (i = 0; i < MultiProc_getNumProcessors(); i++ )
{
Atomic_set (&(Dm8168IpcInt_state.isrObjects [i].asserted), 0);
}
ArchIpcInt_object.isSetup = TRUE;
....................
}