commit 72cdfd3208f25eb128bb5ce3c4540181a0b854a5
author Leo Chang <schang@qca.qualcomm.com> Thu Oct 17 20:36:30 2013 -0700
committer Kiet Lam <c_kietl@qca.qualcomm.com> Thu Oct 31 12:02:03 2013 -0700
tree 2eb3087af7461cd639a75ac3f2bcde89c7aa7968
parent be97df0a997507a38d55fa5b3912eafd1cbdc759

wlan: reload WLAN driver if cannot recover from RX low resource

If WLAN host driver could not recover Out of RX buffer problem,
Trigger re-load host driver to recover from dead end

Change-Id: I144ff97a8a4c8e458990aa61956f4cc8b6af7356
CRs-fixed: 500022

CORE/DXE/src/wlan_qct_dxe.c

diff --git a/CORE/DXE/src/wlan_qct_dxe.c b/CORE/DXE/src/wlan_qct_dxe.c
index ff2b5ed..b4bc280 100644
--- a/CORE/DXE/src/wlan_qct_dxe.c
+++ b/CORE/DXE/src/wlan_qct_dxe.c
@@ -1858,6 +1858,35 @@
 }
 
 /*==========================================================================
+  @  Function Name
+			      dxeRXResourceAvailableTimerExpHandler
+
+  @  Description
+      During pre-set timeperiod, if free available RX buffer is not allocated
+      Trigger Driver re-loading to recover RX dead end
+
+  @  Parameters
+   v_VOID_t     *usrData
+                DXE context
+
+  @  Return
+      NONE
+
+===========================================================================*/
+void dxeRXResourceAvailableTimerExpHandler
+(
+   void    *usrData
+)
+{
+   HDXE_MSG(eWLAN_MODULE_DAL_DATA, eWLAN_PAL_TRACE_LEVEL_FATAL,
+            "RX Low resource, Durign wait time period %d, RX resource not allocated",
+            T_WLANDXE_MAX_RX_PACKET_WAIT);
+   wpalWlanReload();
+
+   return;
+}
+
+/*==========================================================================
   @  Function Name 
       dxeRXPacketAvailableCB
 
@@ -1988,8 +2017,8 @@
    }
    else if(!dxeCtxt->rxPalPacketUnavailable)
    {
-   /* Allocate platform Packet buffer and OS Frame Buffer at here */
-   currentPalPacketBuffer = wpalPacketAlloc(eWLAN_PAL_PKT_TYPE_RX_RAW,
+      /* Allocate platform Packet buffer and OS Frame Buffer at here */
+      currentPalPacketBuffer = wpalPacketAlloc(eWLAN_PAL_PKT_TYPE_RX_RAW,
                                             WLANDXE_DEFAULT_RX_OS_BUFFER_SIZE,
                                             dxeRXPacketAvailableCB,
                                             (void *)dxeCtxt);
@@ -1997,6 +2026,16 @@
       if(NULL == currentPalPacketBuffer)
       {
          dxeCtxt->rxPalPacketUnavailable = eWLAN_PAL_TRUE;
+         /* Out of RX free buffer,
+          * Start timer to recover from RX dead end */
+         if(VOS_TIMER_STATE_RUNNING !=
+            wpalTimerGetCurStatus(&dxeCtxt->rxResourceAvailableTimer))
+         {
+            HDXE_MSG(eWLAN_MODULE_DAL_DATA, eWLAN_PAL_TRACE_LEVEL_WARN,
+                     "RX Low resource, wait available resource");
+            wpalTimerStart(&dxeCtxt->rxResourceAvailableTimer,
+                           T_WLANDXE_MAX_RX_PACKET_WAIT);
+         }
       }
    }
    
@@ -2870,6 +2909,13 @@
    }
 
    dxeCtxt    = (WLANDXE_CtrlBlkType *)(rxPktAvailMsg->pContext);
+   /* Available resource allocated
+    * Stop timer not needed */
+   if(VOS_TIMER_STATE_RUNNING ==
+      wpalTimerGetCurStatus(&dxeCtxt->rxResourceAvailableTimer))
+   {
+      wpalTimerStop(&dxeCtxt->rxResourceAvailableTimer);
+   }
 
    do
    {
@@ -4358,6 +4404,10 @@
       return NULL;
    }
 
+   wpalTimerInit(&tempDxeCtrlBlk->rxResourceAvailableTimer,
+                 dxeRXResourceAvailableTimerExpHandler,
+                 tempDxeCtrlBlk);
+
    HDXE_MSG(eWLAN_MODULE_DAL_DATA, eWLAN_PAL_TRACE_LEVEL_WARN,
             "WLANDXE_Open Success");
    HDXE_MSG(eWLAN_MODULE_DAL_DATA, eWLAN_PAL_TRACE_LEVEL_INFO_LOW,
@@ -4868,6 +4918,12 @@
    wpalUnRegisterInterrupt(DXE_INTERRUPT_TX_COMPLE);
    wpalUnRegisterInterrupt(DXE_INTERRUPT_RX_READY);
 
+   if(VOS_TIMER_STATE_STOPPED !=
+      wpalTimerGetCurStatus(&dxeCtxt->rxResourceAvailableTimer))
+   {
+      wpalTimerStop(&dxeCtxt->rxResourceAvailableTimer);
+   }
+
    HDXE_MSG(eWLAN_MODULE_DAL_DATA, eWLAN_PAL_TRACE_LEVEL_INFO_LOW,
             "%s Exit", __func__);
    return status;
@@ -4917,6 +4973,7 @@
    }
 
    dxeCtxt = (WLANDXE_CtrlBlkType *)pDXEContext;
+   wpalTimerDelete(&dxeCtxt->rxResourceAvailableTimer);
    for(idx = 0; idx < WDTS_CHANNEL_MAX; idx++)
    {
       wpalMutexDelete(&dxeCtxt->dxeChannel[idx].dxeChannelLock);

CORE/DXE/src/wlan_qct_dxe_i.h

diff --git a/CORE/DXE/src/wlan_qct_dxe_i.h b/CORE/DXE/src/wlan_qct_dxe_i.h
index 5f95b33..6d5980c 100644
--- a/CORE/DXE/src/wlan_qct_dxe_i.h
+++ b/CORE/DXE/src/wlan_qct_dxe_i.h
@@ -644,6 +644,7 @@
    wpt_boolean                     rxPalPacketUnavailable;
    wpt_boolean                     driverReloadInProcessing;
    wpt_boolean                     smsmToggled;
+   wpt_timer                       rxResourceAvailableTimer;
 } WLANDXE_CtrlBlkType;
 
 /*==========================================================================