/**
* @ingroup tx_functions
* Transmit thread
*/
int tx_pkt_handler(struct bcm_mini_adapter *Adapter /**< pointer to adapter object*/)
{
int status = 0;
while (!kthread_should_stop()) {
/* FIXME - the timeout looks like workaround for racey usage of TxPktAvail */
if (Adapter->LinkUpStatus)
wait_event_timeout(Adapter->tx_packet_wait_queue,
tx_pending(Adapter), msecs_to_jiffies(10));
else
wait_event_interruptible(Adapter->tx_packet_wait_queue,
tx_pending(Adapter));
if (Adapter->device_removed)
break;
if (Adapter->downloadDDR == 1) {
Adapter->downloadDDR += 1;
status = download_ddr_settings(Adapter);
if (status)
pr_err(PFX "DDR DOWNLOAD FAILED! %d\n", status);
continue;
}
/* Check end point for halt/stall. */
if (Adapter->bEndPointHalted == TRUE) {
Bcm_clear_halt_of_endpoints(Adapter);
Adapter->bEndPointHalted = FALSE;
StartInterruptUrb((PS_INTERFACE_ADAPTER)(Adapter->pvInterfaceAdapter));
}
if (Adapter->LinkUpStatus && !Adapter->IdleMode) {
if (atomic_read(&Adapter->TotalPacketCount))
update_per_sf_desc_cnts(Adapter);
}
if (atomic_read(&Adapter->CurrNumFreeTxDesc) &&
Adapter->LinkStatus == SYNC_UP_REQUEST &&
!Adapter->bSyncUpRequestSent) {
BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, "Calling LinkMessage");
LinkMessage(Adapter);
}
if ((Adapter->IdleMode || Adapter->bShutStatus) && atomic_read(&Adapter->TotalPacketCount)) {
BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, "Device in Low Power mode...waking up");
Adapter->usIdleModePattern = ABORT_IDLE_MODE;
Adapter->bWakeUpDevice = TRUE;
wake_up(&Adapter->process_rx_cntrlpkt);
}
transmit_packets(Adapter);
atomic_set(&Adapter->TxPktAvail, 0);
}
BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, "Exiting the tx thread..\n");
Adapter->transmit_packet_thread = NULL;
return 0;
}
/**
@ingroup tx_functions
Transmit thread
*/
int tx_pkt_handler(PMINI_ADAPTER Adapter /**< pointer to adapter object*/
)
{
#ifndef BCM_SHM_INTERFACE
int status = 0;
#endif
UINT calltransmit = 1;
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, "Entring to wait for signal from the interrupt service thread!Adapter = 0x%lx",(ULONG) Adapter);
while(1)
{
if(Adapter->LinkUpStatus){
wait_event_timeout(Adapter->tx_packet_wait_queue,
((atomic_read(&Adapter->TxPktAvail) &&
(MINIMUM_PENDING_DESCRIPTORS <
atomic_read(&Adapter->CurrNumFreeTxDesc)) &&
(Adapter->device_removed == FALSE))) ||
(1 == Adapter->uiFirstInterrupt) || kthread_should_stop()
#ifndef BCM_SHM_INTERFACE
|| (TRUE == Adapter->bEndPointHalted)
#endif
, msecs_to_jiffies(10));
}
else{
wait_event(Adapter->tx_packet_wait_queue,
((atomic_read(&Adapter->TxPktAvail) &&
(MINIMUM_PENDING_DESCRIPTORS <
atomic_read(&Adapter->CurrNumFreeTxDesc)) &&
(Adapter->device_removed == FALSE))) ||
(1 == Adapter->uiFirstInterrupt) || kthread_should_stop()
#ifndef BCM_SHM_INTERFACE
|| (TRUE == Adapter->bEndPointHalted)
#endif
);
}
if(kthread_should_stop() || Adapter->device_removed)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, "Exiting the tx thread..\n");
Adapter->transmit_packet_thread = NULL;
return 0;
}
if(Adapter->uiFirstInterrupt == 1)
{
SetUpTargetDsxBuffers(Adapter);
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, "Seting DSX...\n");
Adapter->uiFirstInterrupt +=1;
#ifndef BCM_SHM_INTERFACE
status = download_ddr_settings(Adapter);
if(status)
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, "DDR DOWNLOAD FAILED!\n");
#endif
continue;
}
#ifndef BCM_SHM_INTERFACE
//Check end point for halt/stall.
if(Adapter->bEndPointHalted == TRUE)
{
Bcm_clear_halt_of_endpoints(Adapter);
Adapter->bEndPointHalted = FALSE;
StartInterruptUrb((PS_INTERFACE_ADAPTER)(Adapter->pvInterfaceAdapter));
}
if(Adapter->LinkUpStatus && !Adapter->IdleMode)
{
if(atomic_read(&Adapter->TotalPacketCount))
{
update_per_sf_desc_cnts(Adapter);
}
}
#endif
if( atomic_read(&Adapter->CurrNumFreeTxDesc) &&
Adapter->LinkStatus == SYNC_UP_REQUEST &&
!Adapter->bSyncUpRequestSent)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, "Calling LinkMessage");
LinkMessage(Adapter);
}
if((Adapter->IdleMode || Adapter->bShutStatus) && atomic_read(&Adapter->TotalPacketCount))
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, "Device in Low Power mode...waking up");
Adapter->usIdleModePattern = ABORT_IDLE_MODE;
Adapter->bWakeUpDevice = TRUE;
wake_up(&Adapter->process_rx_cntrlpkt);
}
#ifdef BCM_SHM_INTERFACE
spin_lock_bh(&Adapter->txtransmitlock);
if(Adapter->txtransmit_running == 0)
{
Adapter->txtransmit_running = 1;
calltransmit = 1;
}
else
calltransmit = 0;
spin_unlock_bh(&Adapter->txtransmitlock);
#endif
if(calltransmit)
transmit_packets(Adapter);
atomic_set(&Adapter->TxPktAvail, 0);
}
return 0;
}
