Exemplo n.º 1
0
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;
}