Initial file dump from open source releaseHEADmaster

1 files changed, 169 insertions, 0 deletions

diff --git a/drivers/staging/bcm/InterfaceIsr.c b/drivers/staging/bcm/InterfaceIsr.c
new file mode 100644
index 00000000..8322f1b7
--- /dev/null
+++ b/drivers/staging/bcm/InterfaceIsr.c
@@ -0,0 +1,169 @@
+#include "headers.h"
+
+
+static void read_int_callback(struct urb *urb/*, struct pt_regs *regs*/)
+{
+	int		status = urb->status;
+	struct bcm_interface_adapter *psIntfAdapter = (struct bcm_interface_adapter *)urb->context;
+	struct bcm_mini_adapter *Adapter = psIntfAdapter->psAdapter ;
+
+	if (netif_msg_intr(Adapter))
+		pr_info(PFX "%s: interrupt status %d\n",
+			Adapter->dev->name, status);
+
+	if(Adapter->device_removed == TRUE)
+	{
+		BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Device has Got Removed.");
+		return ;
+	}
+
+	if(((Adapter->bPreparingForLowPowerMode == TRUE) && (Adapter->bDoSuspend == TRUE)) ||
+		psIntfAdapter->bSuspended ||
+		psIntfAdapter->bPreparingForBusSuspend)
+	{
+			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt call back is called while suspending the device");
+			return ;
+	}
+
+	//BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL, "interrupt urb status %d", status);
+	switch (status) {
+	    /* success */
+	    case STATUS_SUCCESS:
+		if ( urb->actual_length )
+		{
+
+			if(psIntfAdapter->ulInterruptData[1] & 0xFF)
+			{
+				BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL, "Got USIM interrupt");
+			}
+
+			if(psIntfAdapter->ulInterruptData[1] & 0xFF00)
+			{
+				atomic_set(&Adapter->CurrNumFreeTxDesc,
+					(psIntfAdapter->ulInterruptData[1] & 0xFF00) >> 8);
+				atomic_set (&Adapter->uiMBupdate, TRUE);
+				BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL, "TX mailbox contains %d",
+					atomic_read(&Adapter->CurrNumFreeTxDesc));
+			}
+			if(psIntfAdapter->ulInterruptData[1] >> 16)
+			{
+				Adapter->CurrNumRecvDescs=
+					(psIntfAdapter->ulInterruptData[1]  >> 16);
+				BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"RX mailbox contains %d",
+					Adapter->CurrNumRecvDescs);
+				InterfaceRx(psIntfAdapter);
+			}
+			if(Adapter->fw_download_done &&
+				!Adapter->downloadDDR &&
+				atomic_read(&Adapter->CurrNumFreeTxDesc))
+			{
+				psIntfAdapter->psAdapter->downloadDDR +=1;
+				wake_up(&Adapter->tx_packet_wait_queue);
+			}
+			if(FALSE == Adapter->waiting_to_fw_download_done)
+			{
+				Adapter->waiting_to_fw_download_done = TRUE;
+				wake_up(&Adapter->ioctl_fw_dnld_wait_queue);
+			}
+			if(!atomic_read(&Adapter->TxPktAvail))
+			{
+				atomic_set(&Adapter->TxPktAvail, 1);
+				wake_up(&Adapter->tx_packet_wait_queue);
+			}
+			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Firing interrupt in URB");
+		}
+		break;
+		case -ENOENT :
+		{
+			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"URB has got disconnected ....");
+			return ;
+		}
+		case -EINPROGRESS:
+		{
+			//This situation may happened when URBunlink is used. for detail check usb_unlink_urb documentation.
+			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Impossibe condition has occurred... something very bad is going on");
+			break ;
+			//return;
+		}
+		case -EPIPE:
+		{
+				BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt IN endPoint  has got halted/stalled...need to clear this");
+				Adapter->bEndPointHalted = TRUE ;
+				wake_up(&Adapter->tx_packet_wait_queue);
+				urb->status = STATUS_SUCCESS ;
+				return;
+		}
+	    /* software-driven interface shutdown */
+	    case -ECONNRESET: //URB got unlinked.
+	    case -ESHUTDOWN:		// hardware gone. this is the serious problem.
+	    						//Occurs only when something happens with the host controller device
+	    case -ENODEV : //Device got removed
+		case -EINVAL : //Some thing very bad happened with the URB. No description is available.
+	    	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"interrupt urb error %d", status);
+			urb->status = STATUS_SUCCESS ;
+			break ;
+			//return;
+	    default:
+			//This is required to check what is the defaults conditions when it occurs..
+			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL,"GOT DEFAULT INTERRUPT URB STATUS :%d..Please Analyze it...", status);
+		break;
+	}
+
+	StartInterruptUrb(psIntfAdapter);
+
+
+}
+
+int CreateInterruptUrb(struct bcm_interface_adapter *psIntfAdapter)
+{
+	psIntfAdapter->psInterruptUrb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!psIntfAdapter->psInterruptUrb)
+	{
+		BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Cannot allocate interrupt urb");
+		return -ENOMEM;
+	}
+	psIntfAdapter->psInterruptUrb->transfer_buffer =
+								psIntfAdapter->ulInterruptData;
+	psIntfAdapter->psInterruptUrb->transfer_buffer_length =
+							sizeof(psIntfAdapter->ulInterruptData);
+
+	psIntfAdapter->sIntrIn.int_in_pipe = usb_rcvintpipe(psIntfAdapter->udev,
+						psIntfAdapter->sIntrIn.int_in_endpointAddr);
+
+	usb_fill_int_urb(psIntfAdapter->psInterruptUrb, psIntfAdapter->udev,
+					psIntfAdapter->sIntrIn.int_in_pipe,
+					psIntfAdapter->psInterruptUrb->transfer_buffer,
+					psIntfAdapter->psInterruptUrb->transfer_buffer_length,
+					read_int_callback, psIntfAdapter,
+					psIntfAdapter->sIntrIn.int_in_interval);
+
+	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt Interval: %d\n",
+				psIntfAdapter->sIntrIn.int_in_interval);
+	return 0;
+}
+
+
+INT StartInterruptUrb(struct bcm_interface_adapter *psIntfAdapter)
+{
+	INT status = 0;
+
+	if( FALSE == psIntfAdapter->psAdapter->device_removed &&
+		FALSE == psIntfAdapter->psAdapter->bEndPointHalted &&
+		FALSE == psIntfAdapter->bSuspended &&
+		FALSE == psIntfAdapter->bPreparingForBusSuspend &&
+		FALSE == psIntfAdapter->psAdapter->StopAllXaction)
+	{
+		status = usb_submit_urb(psIntfAdapter->psInterruptUrb, GFP_ATOMIC);
+		if (status)
+		{
+			BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Cannot send int urb %d\n", status);
+			if(status == -EPIPE)
+			{
+				psIntfAdapter->psAdapter->bEndPointHalted = TRUE ;
+				wake_up(&psIntfAdapter->psAdapter->tx_packet_wait_queue);
+			}
+		}
+	}
+	return status;
+}
+