/* stop HTC communications, i.e. stop interrupt reception, and flush all queued buffers */
void HTCStop(HTC_HANDLE HTCHandle)
{
HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
int i;
HTC_ENDPOINT *pEndpoint;
#ifdef RX_SG_SUPPORT
adf_nbuf_t netbuf;
adf_nbuf_queue_t *rx_sg_queue = &target->RxSgQueue;
#endif
AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("+HTCStop \n"));
/* cleanup endpoints */
for (i = 0; i < ENDPOINT_MAX; i++) {
pEndpoint = &target->EndPoint[i];
HTCFlushRxHoldQueue(target,pEndpoint);
HTCFlushEndpointTX(target,pEndpoint,HTC_TX_PACKET_TAG_ALL);
}
/* Note: HTCFlushEndpointTX for all endpoints should be called before
* HIFStop - otherwise HTCTxCompletionHandler called from
* hif_send_buffer_cleanup_on_pipe for residual tx frames in HIF layer,
* might queue the packet again to HIF Layer - which could cause tx
* buffer leak
*/
HIFStop(target->hif_dev);
#ifdef RX_SG_SUPPORT
LOCK_HTC_RX(target);
while ((netbuf = adf_nbuf_queue_remove(rx_sg_queue)) != NULL) {
adf_nbuf_free(netbuf);
}
RESET_RX_SG_CONFIG(target);
UNLOCK_HTC_RX(target);
#endif
ResetEndpointStates(target);
AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("-HTCStop \n"));
}
/* stop HTC communications, i.e. stop interrupt reception, and flush all queued buffers */
void HTCStop(HTC_HANDLE HTCHandle)
{
HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("+HTCStop \n"));
/* mark that we are shutting down .. */
target->HTCStateFlags |= HTC_STATE_STOPPING;
/* Masking interrupts is a synchronous operation, when this function returns
* all pending HIF I/O has completed, we can safely flush the queues */
DevMaskInterrupts(&target->Device);
/* flush all send packets */
HTCFlushSendPkts(target);
/* flush all recv buffers */
HTCFlushRecvBuffers(target);
ResetEndpointStates(target);
AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("-HTCStop \n"));
}
/* registered target arrival callback from the HIF layer */
HTC_HANDLE HTCCreate(void *hHIF, HTC_INIT_INFO *pInfo, adf_os_device_t osdev)
{
MSG_BASED_HIF_CALLBACKS htcCallbacks;
HTC_ENDPOINT *pEndpoint=NULL;
HTC_TARGET *target = NULL;
int i;
AR_DEBUG_PRINTF(ATH_DEBUG_INFO, ("+HTCCreate .. HIF :%p \n",hHIF));
A_REGISTER_MODULE_DEBUG_INFO(htc);
if ((target = (HTC_TARGET *)A_MALLOC(sizeof(HTC_TARGET))) == NULL) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("HTC : Unable to allocate memory\n"));
return NULL;
}
A_MEMZERO(target, sizeof(HTC_TARGET));
adf_os_spinlock_init(&target->HTCLock);
adf_os_spinlock_init(&target->HTCRxLock);
adf_os_spinlock_init(&target->HTCTxLock);
do {
A_MEMCPY(&target->HTCInitInfo,pInfo,sizeof(HTC_INIT_INFO));
target->host_handle = pInfo->pContext;
target->osdev = osdev;
ResetEndpointStates(target);
INIT_HTC_PACKET_QUEUE(&target->ControlBufferTXFreeList);
for (i = 0; i < HTC_PACKET_CONTAINER_ALLOCATION; i++) {
HTC_PACKET *pPacket = (HTC_PACKET *)A_MALLOC(sizeof(HTC_PACKET));
if (pPacket != NULL) {
A_MEMZERO(pPacket,sizeof(HTC_PACKET));
FreeHTCPacketContainer(target,pPacket);
}
}
#ifdef TODO_FIXME
for (i = 0; i < NUM_CONTROL_TX_BUFFERS; i++) {
pPacket = BuildHTCTxCtrlPacket();
if (NULL == pPacket) {
break;
}
HTCFreeControlTxPacket(target,pPacket);
}
#endif
/* setup HIF layer callbacks */
A_MEMZERO(&htcCallbacks, sizeof(MSG_BASED_HIF_CALLBACKS));
htcCallbacks.Context = target;
htcCallbacks.rxCompletionHandler = HTCRxCompletionHandler;
htcCallbacks.txCompletionHandler = HTCTxCompletionHandler;
htcCallbacks.txResourceAvailHandler = HTCTxResourceAvailHandler;
htcCallbacks.fwEventHandler = HTCFwEventHandler;
target->hif_dev = hHIF;
/* Get HIF default pipe for HTC message exchange */
pEndpoint = &target->EndPoint[ENDPOINT_0];
HIFPostInit(hHIF, target, &htcCallbacks);
HIFGetDefaultPipe(hHIF, &pEndpoint->UL_PipeID, &pEndpoint->DL_PipeID);
} while (FALSE);
HTCRecvInit(target);
AR_DEBUG_PRINTF(ATH_DEBUG_INFO, ("-HTCCreate (0x%p) \n", target));
return (HTC_HANDLE)target;
}
