/******************************************************************
Registered procedure for filtering if resource requirement
Required when the device supports MSI, but the driver decides - will it work with MSI or not
(currently MSI is supported but does not work, exactly our case).
In this case the resource requirement list must be replaced - we need to remove from it
all the "message interrupt" resources.
When we are ready to work with MSI (VIRTIO_USE_MSIX_INTERRUPT is DEFINED),
we just enumerate allocated resources and do not modify them.
*******************************************************************/
static NDIS_STATUS ParaNdis6_FilterResource(IN NDIS_HANDLE MiniportAddDeviceContext, IN PIRP Irp)
{
DPrintf(0, ("[%s] entered\n", __FUNCTION__));
PIO_RESOURCE_REQUIREMENTS_LIST prrl = (PIO_RESOURCE_REQUIREMENTS_LIST)(PVOID)Irp->IoStatus.Information;
#ifdef DBG
PrintPRRL(prrl);
#endif
PIO_RESOURCE_REQUIREMENTS_LIST newPrrl = ParseFilterResourceIrp(MiniportAddDeviceContext, prrl, BOOLEAN(bDisableMSI));
if (newPrrl)
{
Irp->IoStatus.Information = (ULONG_PTR)newPrrl;
NdisFreeMemory(prrl, 0, 0);
#ifdef DBG
PrintPRRL(newPrrl);
#endif
}
else
{
DPrintf(0, ("[%s] Resource requirement unchanged\n", __FUNCTION__));
}
return NDIS_STATUS_SUCCESS;
}
/******************************************************************
Registered procedure for filtering if resource requirement
Required when the device supports MSI, but the driver decides - will it work with MSI or not
(currently MSI is supported but does not work, exactly our case).
In this case the resource requirement list must be replaced - we need to remove from it
all the "message interrupt" resources.
When we are ready to work with MSI (VIRTIO_USE_MSIX_INTERRUPT is DEFINED),
we just enumerate allocated resources and do not modify them.
*******************************************************************/
static NDIS_STATUS ParaNdis6_FilterResource(IN NDIS_HANDLE MiniportAddDeviceContext, IN PIRP Irp)
{
PIO_RESOURCE_REQUIREMENTS_LIST prrl = (PIO_RESOURCE_REQUIREMENTS_LIST)(PVOID)Irp->IoStatus.Information;
if (bDisableMSI)
{
// traverse the resource requirements list, clean up all the MSI resources
PIO_RESOURCE_REQUIREMENTS_LIST newPrrl = ParseFilterResourceIrp(MiniportAddDeviceContext, prrl, TRUE);
if (newPrrl)
{
Irp->IoStatus.Information = (ULONG_PTR)newPrrl;
NdisFreeMemory(prrl, 0, 0);
DPrintf(resourceFilterLevel, ("[%s] Reparsing resources after filtering...\n", __FUNCTION__));
// just parse and print after MSI cleanup, this time do not remove anything and do not reallocate the list
ParseFilterResourceIrp(NULL, newPrrl, FALSE);
}
}
else
{
// just parse and print, do not remove amything and do not reallocate the list
ParseFilterResourceIrp(NULL, prrl, FALSE);
}
return NDIS_STATUS_SUCCESS;
}
