2010-09-08 21:46:36 +00:00
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#include "headers.h"
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static void read_int_callback(struct urb *urb/*, struct pt_regs *regs*/)
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{
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int status = urb->status;
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PS_INTERFACE_ADAPTER psIntfAdapter = (PS_INTERFACE_ADAPTER)urb->context;
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PMINI_ADAPTER Adapter = psIntfAdapter->psAdapter ;
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2010-11-01 16:18:36 +00:00
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if (netif_msg_intr(Adapter))
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pr_info(PFX "%s: interrupt status %d\n",
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Adapter->dev->name, status);
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2010-09-08 21:46:36 +00:00
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if(Adapter->device_removed == TRUE)
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{
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Device has Got Removed.");
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return ;
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}
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if(((Adapter->bPreparingForLowPowerMode == TRUE) && (Adapter->bDoSuspend == TRUE)) ||
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psIntfAdapter->bSuspended ||
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psIntfAdapter->bPreparingForBusSuspend)
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{
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt call back is called while suspending the device");
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return ;
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}
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//BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL, "interrupt urb status %d", status);
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switch (status) {
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/* success */
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case STATUS_SUCCESS:
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if ( urb->actual_length )
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{
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if(psIntfAdapter->ulInterruptData[1] & 0xFF)
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{
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL, "Got USIM interrupt");
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}
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if(psIntfAdapter->ulInterruptData[1] & 0xFF00)
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{
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atomic_set(&Adapter->CurrNumFreeTxDesc,
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(psIntfAdapter->ulInterruptData[1] & 0xFF00) >> 8);
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atomic_set (&Adapter->uiMBupdate, TRUE);
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL, "TX mailbox contains %d",
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atomic_read(&Adapter->CurrNumFreeTxDesc));
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}
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if(psIntfAdapter->ulInterruptData[1] >> 16)
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{
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Adapter->CurrNumRecvDescs=
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(psIntfAdapter->ulInterruptData[1] >> 16);
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"RX mailbox contains %d",
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Adapter->CurrNumRecvDescs);
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InterfaceRx(psIntfAdapter);
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}
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if(Adapter->fw_download_done &&
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!Adapter->downloadDDR &&
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atomic_read(&Adapter->CurrNumFreeTxDesc))
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{
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psIntfAdapter->psAdapter->downloadDDR +=1;
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wake_up(&Adapter->tx_packet_wait_queue);
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}
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if(FALSE == Adapter->waiting_to_fw_download_done)
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{
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Adapter->waiting_to_fw_download_done = TRUE;
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wake_up(&Adapter->ioctl_fw_dnld_wait_queue);
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}
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if(!atomic_read(&Adapter->TxPktAvail))
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{
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atomic_set(&Adapter->TxPktAvail, 1);
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wake_up(&Adapter->tx_packet_wait_queue);
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}
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Firing interrupt in URB");
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}
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break;
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case -ENOENT :
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{
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"URB has got disconnected ....");
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return ;
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}
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case -EINPROGRESS:
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{
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2011-03-31 01:57:33 +00:00
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//This situation may happened when URBunlink is used. for detail check usb_unlink_urb documentation.
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Impossibe condition has occurred... something very bad is going on");
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2010-09-08 21:46:36 +00:00
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break ;
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//return;
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}
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case -EPIPE:
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{
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt IN endPoint has got halted/stalled...need to clear this");
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Adapter->bEndPointHalted = TRUE ;
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wake_up(&Adapter->tx_packet_wait_queue);
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2010-11-15 03:04:48 +00:00
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urb->status = STATUS_SUCCESS ;
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2010-09-08 21:46:36 +00:00
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return;
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}
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/* software-driven interface shutdown */
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case -ECONNRESET: //URB got unlinked.
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case -ESHUTDOWN: // hardware gone. this is the serious problem.
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//Occurs only when something happens with the host controller device
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case -ENODEV : //Device got removed
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case -EINVAL : //Some thing very bad happened with the URB. No description is available.
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"interrupt urb error %d", status);
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urb->status = STATUS_SUCCESS ;
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break ;
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//return;
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default:
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//This is required to check what is the defaults conditions when it occurs..
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL,"GOT DEFAULT INTERRUPT URB STATUS :%d..Please Analyze it...", status);
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break;
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}
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StartInterruptUrb(psIntfAdapter);
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}
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int CreateInterruptUrb(PS_INTERFACE_ADAPTER psIntfAdapter)
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{
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psIntfAdapter->psInterruptUrb = usb_alloc_urb(0, GFP_KERNEL);
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if (!psIntfAdapter->psInterruptUrb)
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{
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BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Cannot allocate interrupt urb");
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return -ENOMEM;
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}
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psIntfAdapter->psInterruptUrb->transfer_buffer =
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psIntfAdapter->ulInterruptData;
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psIntfAdapter->psInterruptUrb->transfer_buffer_length =
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sizeof(psIntfAdapter->ulInterruptData);
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psIntfAdapter->sIntrIn.int_in_pipe = usb_rcvintpipe(psIntfAdapter->udev,
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psIntfAdapter->sIntrIn.int_in_endpointAddr);
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usb_fill_int_urb(psIntfAdapter->psInterruptUrb, psIntfAdapter->udev,
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psIntfAdapter->sIntrIn.int_in_pipe,
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psIntfAdapter->psInterruptUrb->transfer_buffer,
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psIntfAdapter->psInterruptUrb->transfer_buffer_length,
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read_int_callback, psIntfAdapter,
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psIntfAdapter->sIntrIn.int_in_interval);
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BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt Interval: %d\n",
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psIntfAdapter->sIntrIn.int_in_interval);
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return 0;
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}
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INT StartInterruptUrb(PS_INTERFACE_ADAPTER psIntfAdapter)
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{
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INT status = 0;
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if( FALSE == psIntfAdapter->psAdapter->device_removed &&
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FALSE == psIntfAdapter->psAdapter->bEndPointHalted &&
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FALSE == psIntfAdapter->bSuspended &&
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FALSE == psIntfAdapter->bPreparingForBusSuspend &&
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FALSE == psIntfAdapter->psAdapter->StopAllXaction)
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{
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status = usb_submit_urb(psIntfAdapter->psInterruptUrb, GFP_ATOMIC);
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if (status)
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{
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BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Cannot send int urb %d\n", status);
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if(status == -EPIPE)
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{
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psIntfAdapter->psAdapter->bEndPointHalted = TRUE ;
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wake_up(&psIntfAdapter->psAdapter->tx_packet_wait_queue);
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}
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}
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}
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return status;
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}
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