static A_STATUS DevServiceCounterInterrupt(AR6K_DEVICE *pDev)
{
A_UINT8 counter_int_status;
AR_DEBUG_PRINTF(ATH_DEBUG_IRQ, ("Counter Interrupt\n"));
counter_int_status = pDev->IrqProcRegisters.counter_int_status &
pDev->IrqEnableRegisters.counter_int_status_enable;
AR_DEBUG_ASSERT(counter_int_status);
AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,
("Valid interrupt source(s) in COUNTER_INT_STATUS: 0x%x\n",
counter_int_status));
/* Check if the debug interrupt is pending */
if (counter_int_status & AR6K_TARGET_DEBUG_INTR_MASK) {
return DevServiceDebugInterrupt(pDev);
}
return A_OK;
}
static int DevServiceCounterInterrupt(AR6K_DEVICE *pDev)
{
u8 counter_int_status;
AR_DEBUG_PRINTF(ATH_DEBUG_IRQ, ("Counter Interrupt\n"));
counter_int_status = pDev->IrqProcRegisters.counter_int_status &
pDev->IrqEnableRegisters.counter_int_status_enable;
AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,
("Valid interrupt source(s) in COUNTER_INT_STATUS: 0x%x\n",
counter_int_status));
/* Check if the debug interrupt is pending
* NOTE: other modules like GMBOX may use the counter interrupt for
* credit flow control on other counters, we only need to check for the debug assertion
* counter interrupt */
if (counter_int_status & AR6K_TARGET_DEBUG_INTR_MASK) {
return DevServiceDebugInterrupt(pDev);
}
return 0;
}
/* mailbox recv message polling */
int DevPollMboxMsgRecv(AR6K_DEVICE *pDev,
u32 *pLookAhead,
int TimeoutMS)
{
int status = 0;
int timeout = TimeoutMS/DELAY_PER_INTERVAL_MS;
A_ASSERT(timeout > 0);
AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("+DevPollMboxMsgRecv \n"));
while (true) {
if (pDev->GetPendingEventsFunc != NULL) {
HIF_PENDING_EVENTS_INFO events;
#ifdef THREAD_X
events.Polling =1;
#endif
/* the HIF layer uses a special mechanism to get events, do this
* synchronously */
status = pDev->GetPendingEventsFunc(pDev->HIFDevice,
&events,
NULL);
if (status)
{
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Failed to get pending events \n"));
break;
}
if (events.Events & HIF_RECV_MSG_AVAIL)
{
/* there is a message available, the lookahead should be valid now */
*pLookAhead = events.LookAhead;
break;
}
} else {
/* this is the standard HIF way.... */
/* load the register table */
status = HIFReadWrite(pDev->HIFDevice,
HOST_INT_STATUS_ADDRESS,
(u8 *)&pDev->IrqProcRegisters,
AR6K_IRQ_PROC_REGS_SIZE,
HIF_RD_SYNC_BYTE_INC,
NULL);
if (status){
AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("Failed to read register table \n"));
break;
}
/* check for MBOX data and valid lookahead */
if (pDev->IrqProcRegisters.host_int_status & (1 << HTC_MAILBOX)) {
if (pDev->IrqProcRegisters.rx_lookahead_valid & (1 << HTC_MAILBOX))
{
/* mailbox has a message and the look ahead is valid */
*pLookAhead = pDev->IrqProcRegisters.rx_lookahead[HTC_MAILBOX];
break;
}
}
}
timeout--;
if (timeout <= 0) {
AR_DEBUG_PRINTF(ATH_DEBUG_ERR, (" Timeout waiting for recv message \n"));
status = A_ERROR;
/* check if the target asserted */
if ( pDev->IrqProcRegisters.counter_int_status & AR6K_TARGET_DEBUG_INTR_MASK) {
/* target signaled an assert, process this pending interrupt
* this will call the target failure handler */
DevServiceDebugInterrupt(pDev);
}
break;
}
/* delay a little */
A_MDELAY(DELAY_PER_INTERVAL_MS);
AR_DEBUG_PRINTF(ATH_DEBUG_RECV,(" Retry Mbox Poll : %d \n",timeout));
}
AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("-DevPollMboxMsgRecv \n"));
return status;
}