usbhubbusmanager.c

usb2 driver for vxwokrs

                    0,
                    0);

                /*
                 * a.Call HUB_PortEventHandler() with the pHub and the port
                 * number if this call fails, set the pHub::StateOfHub as
                 * MARKED_FOR_DELETION and go to step 5.
                 */
                Result=usbHubPortEventHandler(pHub,uPortCount);
                if (USBHST_SUCCESS != Result)
                {
                    /* Debug Message */
                    OS_LOG_MESSAGE_HIGH(
                        HUB,
                        "usbHubStatusChangeHandler:Port Evnt failed:"
                        "0x%x:port=%d:0x%x\n",
                        pHub->uDeviceHandle,
                        uPortCount,
                        Result,
                        0);

                    /* Mark the hub for deletion */
                    pHub->StateOfHub=USB_MARKED_FOR_DELETION;
                    break;

                } /* End of if (USBHST_SUCCESS != Result) */

            } /* End of if (TRUE==bResult) */

            /*
             * iv. Retrieve the HUB_PORT_INFO structure from the
             *     pHub::pPortList[port number]. If this port is enabled,
             */

            /* retrive the Port info */
            pPort=pHub->pPortList[uPortCount];

            /* Check if the port is enabled */
            if (NULL != pPort)
            {
                /*
                 * a.If the HUB_PORT_INFO::StateOfPort is HUB_DEBOUNCE_PENDING
                 *  then call HUB_PortDebounceHandler(). If this call fails,
                 *  then set the pHub::StateOfHub as MARKED_FOR_DELETION and
                 *  go to step 5.
                 */
                if (USB_HUB_DEBOUNCE_PENDING == pPort->StateOfPort)
                {
                    /* Debug Message */

                    

                    OS_LOG_MESSAGE_LOW(
                        HUB,
                        "usbHubStatusChangeHandler:Debounce detect:0x%x:"
                        "port=%d\n",
                        pHub->uDeviceHandle,
                        uPortCount,
                        0,
                        0);

                    /* handle the debounce */
                    Result =usbHubPortDebounceHandler(pHub,uPortCount);
                    if (USBHST_SUCCESS != Result)
                    {
                        /* Debug Message */
                        OS_LOG_MESSAGE_HIGH(
                            HUB,
                            "usbHubStatusChangeHandler:Debounce failed:"
                            "0x%x:port=%d:0x%x\n",
                            pHub->uDeviceHandle,
                            uPortCount,
                            Result,
                            0);

                        /* Mark the hub for deletion */
                        pHub->StateOfHub=USB_MARKED_FOR_DELETION;

                        /* break off from the loop */
                        break;

                    } /* End of if (USBHST_SUCCESS != Result) */

                }/* End of HUB_DEBOUNCE... */

                /*
                 * b.If the HUB_PORT_INFO::StateOfPort is HUB_RESET_PENDING then
                 * call the HUB_HandleDeviceConnection(). If this call fails,
                 * then set the pHub::StateOfHub as MARKED_FOR_DELETION
                 * and go to step 5.
                 */
                if (USB_HUB_RESET_PENDING == pPort->StateOfPort)
                {
                    /* Debug Message */
                    OS_LOG_MESSAGE_LOW(
                        HUB,
                        "usbHubStatusChangeHandler:reset pending detect:0x%x:"
                        "port=%d\n",
                        pHub->uDeviceHandle,
                        uPortCount,
                        0,
                        0);

                    Result=usbHubHandleDeviceConnection(pHub,uPortCount);
                    if (USBHST_SUCCESS != Result)
                    {
                        /* Debug Message */
                        OS_LOG_MESSAGE_HIGH(
                            HUB,
                            "usbHubStatusChangeHandler:Hndl devcon failed:0x%x:"
                            "port=%d:0x%x\n",
                            pHub->uDeviceHandle,
                            uPortCount,
                            Result,
                            0);

                        /* Mark the hub for deletion */
                        pHub->StateOfHub=USB_MARKED_FOR_DELETION;
                        break;

                    } /* End of if (USBHST_SUCCESS != Result) */

                }/* End of HUB_RESET... */

                /*
                 * c.If the HUB_PORT_INFO::StateOfPort is not
                 * MARKED_FOR_DELETION then go to next iteration of for loop
                 */
                if (USB_MARKED_FOR_DELETION != pPort->StateOfPort)
                {
                    continue;

                }/* End of MARKED_FOR_DELETION... */

                /* Debug Message */
                OS_LOG_MESSAGE_HIGH(
                    HUB,
                    "usbHubStatusChangeHandler:Port to be deleted:"
                    "0x%x:port=%d:\n",
                    pHub->uDeviceHandle,
                    uPortCount,
                    0,
                    0);

                /*
                 * If HUB_PORT_INFO::pHub is NULL then call
                 * HUB_RemoveDevice() and free HUB_PORT_INFO and set the
                 * pHub::pPortList[port count] as NULL.
                 * 9/5/2k3:NM: Changed here to centralise the effect
                 */
               usbHubRemoveDevice(pHub,uPortCount);

                /* Set the port variable to NULL */
                pPort = NULL;

                /*
                 * f. Call HUB_CLEAR_PORT_FEATURE() with the PORT_ENABLE as the
                 * feature. If this call fails then set the pHub::StateOfHub
                 * as MARKED_FOR_DELETION and go to step 5.
                 * Note: the actual port number is the port count + 1
                 */
                Result = USB_HUB_CLEAR_PORT_FEATURE(pHub,uPortCount,USB_PORT_ENABLE);

                if (USBHST_SUCCESS != Result)
                {
                    /* Debug Message */
                    OS_LOG_MESSAGE_HIGH(
                        HUB,
                        "usbHubStatusChangeHandler:Port disable failed:"
                        "0x%x:port=%d:0x%x\n",
                        pHub->uDeviceHandle,
                        uPortCount,
                        Result,
                        0);

                    /* Mark the hub for deletion */
                    pHub->StateOfHub = USB_MARKED_FOR_DELETION;

                    break;

                }/* End of if (USBHST_SUCCESS!=Result) */

            } /* End of If (NULL != pPort) */

        } /* End of for (uPortCount.... */

        /* if the hub is marked for deletion fall thru to step 5 */
        if (USB_MARKED_FOR_DELETION != pHub->StateOfHub)
        {

            /*
             * For all enabled ports in pHub::pPortList, if the status change
             * has been cleared,
             * i. Call HUB_SubmitInterruptRequest() with the pHub if this
             *    call fails,set the pHub::StateOfHub
             *    as MARKED_FOR_DELETION.
             */
            bResult=FALSE;
            for (uPortCount = 0;
                 uPortCount < pHub->HubDescriptor.bNbrPorts;
                 uPortCount++)
            {
                /*
                 * Check if the port events have been cleared
                 * Note: The port number is port count +1
                 */
                     bResult = USB_HUB_IS_PORT_EVENT(pHub->pStatus, uPortCount+1);
                     if (TRUE == bResult)
                     {
                         /* Debug Message */
                         OS_LOG_MESSAGE_HIGH(
                             HUB,
                             "usbHubStatusChangeHandler:Port Evnt not cleared:"
                             "0x%x: port=%d:\n",
                             pHub->uDeviceHandle,
                             uPortCount,
                             0,
                             0);

                         break;

                     }/* End of if (TRUE==.. */

                 } /* End of for (uPortCount.... */

                 /* Submit the URB is we have not already submitted one. */
                 if ( (TRUE !=bResult)&&
                      (FALSE == pHub->bURBSubmitted  ) )
                 {
                     /* Debug Message */
                     
                     OS_LOG_MESSAGE_LOW(
                         HUB,
                         "usbHubStatusChangeHandler:Submitting IN request:0x%x\n",
                         pHub->uDeviceHandle,
                         0,
                         0,
                         0);

                     /* Call HUB_SubmitInterruptRequest() with the pHub  */
                     Result=usbHubSubmitInterruptRequest(pHub);

                     /* If failed, delete the hub */
                     if (USBHST_SUCCESS !=Result)
                     {
                         /* Debug Message */
                         OS_LOG_MESSAGE_MEDIUM(
                             HUB,
                             "usbHubStatusChangeHandler:SubmitRequest Failed:"
                             "0x%x:0x%x\n",
                             pHub->uDeviceHandle,
                             Result,
                             0,
                             0);

                         /* Mark the hub for deletion */
                         pHub->StateOfHub=USB_MARKED_FOR_DELETION;

                     } /* End of if (USBHST_SUCCESS !=Result) */

                 }/* End of if TRUE != bResult*/

        }/* End of if (MARKED_FOR_DELETION != pHub->StateOfHub) */

    } /* End of (MARKED_FOR_DELETION != pHub->StateOfHub) */

    /*
     * 5:
     * If pHub::StateOfHub is MARKED_FOR_DELETION then
     * i.    Call the USBHST_RemoveDevice() function to remove the hub device.
     * ii.    Return  USBHST_SUCCESS.
     */
     if (USB_MARKED_FOR_DELETION == pHub->StateOfHub)
     {
         /* Debug Message */
         OS_LOG_MESSAGE_HIGH(
             HUB,
             "usbHubStatusChangeHandler:Hub Being deleted 0x%x\n",
             pHub->uDeviceHandle,
             0,
             0,
             0);
        
         /* Call the USBHST function to remove the hub */
         g_usbHstFunctionList.UsbdToHubFunctionList.removeDevice(pHub->uDeviceHandle);
         return;

     } /* End of if (MARKED_FOR_DELETION ==pHub->StateOfHub) */

   /*
    * For all enabled ports in pHub::pPortList,
    * i.    Retrieve the HUB_PORT_INFO structure from the
    *       pHub::pPortList[port number].
    * ii.   If HUB_PORT_INFO::pHub is not NULL then call
    *       HUB_StatusChangeHandler() with HUB_PORT_INFO::pHub.
    */
    for (uPortCount = 0;
         uPortCount < pHub->HubDescriptor.bNbrPorts;
         uPortCount++)
         {
             /* Retrieve the HUB_PORT_INFO structure */
             pUSB_HUB_PORT_INFO pPort = pHub->pPortList[uPortCount];
             
             /* Check if the port is enabled */
             if (NULL != pPort)
             {
                 /* Check if this is a hub */
                 if (NULL != pPort->pHub)
                 {
                     /* Debug Message */
                     OS_LOG_MESSAGE_LOW(
                         HUB,
                         "usbHubStatusChangeHandler:detected hub:0x%x:%d\n",
                         pHub->uDeviceHandle,
                         uPortCount,
                         0,
                         0);
 
                     /*
                      * we could have events on this hb device too.. so call
                      * the handler
                      */
                    usbHubStatusChangeHandler(pPort->pHub);

                 }/* End of if (NULL != pPort->pHub) */

             } /* End of If (NULL != pPort) */

         } /* End of for (uPortCount.... */

         return;

}/* End of HUB_StatusChangehandler() */

/**************************** End of File HUB_BusManager.c ********************/