NTSTATUS
VIOSerialEvtDeviceD0EntryPostInterruptsEnabled(
IN WDFDEVICE WdfDevice,
IN WDF_POWER_DEVICE_STATE PreviousState
)
{
PPORTS_DEVICE pContext = GetPortsDevice(WdfDevice);
UNREFERENCED_PARAMETER(PreviousState);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "--> %s\n", __FUNCTION__);
PAGED_CODE();
if(!pContext->DeviceOK)
{
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "Sending VIRTIO_CONSOLE_DEVICE_READY 0\n");
VIOSerialSendCtrlMsg(WdfDevice, VIRTIO_CONSOLE_BAD_ID, VIRTIO_CONSOLE_DEVICE_READY, 0);
}
else
{
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "Setting VIRTIO_CONFIG_S_DRIVER_OK flag\n");
VirtIODeviceAddStatus(pContext->pIODevice, VIRTIO_CONFIG_S_DRIVER_OK);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "Sending VIRTIO_CONSOLE_DEVICE_READY 1\n");
VIOSerialSendCtrlMsg(WdfDevice, VIRTIO_CONSOLE_BAD_ID, VIRTIO_CONSOLE_DEVICE_READY, 1);
}
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "<-- %s\n", __FUNCTION__);
return STATUS_SUCCESS;
}
NTSTATUS
VIOSerialEvtDeviceD0Entry(
IN WDFDEVICE Device,
IN WDF_POWER_DEVICE_STATE PreviousState
)
{
PPORTS_DEVICE pContext = GetPortsDevice(Device);
UNREFERENCED_PARAMETER(PreviousState);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "--> %s\n", __FUNCTION__);
if(!pContext->DeviceOK)
{
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "Setting VIRTIO_CONFIG_S_FAILED flag\n");
VirtIODeviceAddStatus(pContext->pIODevice, VIRTIO_CONFIG_S_FAILED);
}
else
{
VIOSerialInitAllQueues(Device);
VIOSerialRenewAllPorts(Device);
}
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "<-- %s\n", __FUNCTION__);
return STATUS_SUCCESS;
}
NTSTATUS
VIOSerialEvtDeviceD0Entry(
IN WDFDEVICE Device,
IN WDF_POWER_DEVICE_STATE PreviousState
)
{
NTSTATUS status = STATUS_SUCCESS;
PPORTS_DEVICE pContext = GetPortsDevice(Device);
UNREFERENCED_PARAMETER(PreviousState);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "--> %s\n", __FUNCTION__);
if(!pContext->DeviceOK)
{
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "Setting VIRTIO_CONFIG_S_FAILED flag\n");
VirtIODeviceAddStatus(pContext->pIODevice, VIRTIO_CONFIG_S_FAILED);
}
else
{
status = VIOSerialInitAllQueues(Device);
if (NT_SUCCESS(status) && pContext->isHostMultiport)
{
VIOSerialFillQueue(pContext->c_ivq, pContext->CVqLock);
}
}
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "<-- %s\n", __FUNCTION__);
return status;
}
NTSTATUS
BalloonInit(
IN WDFOBJECT WdfDevice
)
{
NTSTATUS status = STATUS_SUCCESS;
PDEVICE_CONTEXT devCtx = GetDeviceContext(WdfDevice);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP, "--> BalloonInit\n");
VirtIODeviceReset(&devCtx->VDevice);
VirtIODeviceAddStatus(&devCtx->VDevice, VIRTIO_CONFIG_S_ACKNOWLEDGE);
VirtIODeviceAddStatus(&devCtx->VDevice, VIRTIO_CONFIG_S_DRIVER);
do
{
if (!devCtx->InfVirtQueue)
{
devCtx->InfVirtQueue = FindVirtualQueue(&devCtx->VDevice, 0);
}
else
{
VirtIODeviceRenewQueue(devCtx->InfVirtQueue);
}
if (!devCtx->InfVirtQueue)
{
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
if (!devCtx->DefVirtQueue)
{
devCtx->DefVirtQueue = FindVirtualQueue(&devCtx->VDevice, 1);
}
else
{
VirtIODeviceRenewQueue(devCtx->DefVirtQueue);
}
if (!devCtx->DefVirtQueue)
{
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
if(VirtIODeviceGetHostFeature(&devCtx->VDevice, VIRTIO_BALLOON_F_STATS_VQ))
{
BOOLEAN bNeedBuffer = FALSE;
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP, "--> VIRTIO_BALLOON_F_STATS_VQ\n");
if(!devCtx->StatVirtQueue)
{
devCtx->StatVirtQueue = FindVirtualQueue(&devCtx->VDevice, 2);
bNeedBuffer = TRUE;
}
else
{
VirtIODeviceRenewQueue(devCtx->StatVirtQueue);
}
if(!devCtx->StatVirtQueue)
{
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
if (bNeedBuffer)
{
VIO_SG sg;
sg.physAddr = MmGetPhysicalAddress(devCtx->MemStats);
sg.ulSize = sizeof (BALLOON_STAT) * VIRTIO_BALLOON_S_NR;
if(devCtx->StatVirtQueue->vq_ops->add_buf(devCtx->StatVirtQueue, &sg, 1, 0, devCtx, NULL, 0) < 0)
{
TraceEvents(TRACE_LEVEL_ERROR, DBG_HW_ACCESS, "<-> %s :: Cannot add buffer\n", __FUNCTION__);
}
}
devCtx->StatVirtQueue->vq_ops->kick(devCtx->StatVirtQueue);
if(devCtx->bServiceConnected)
{
VirtIODeviceEnableGuestFeature(&devCtx->VDevice, VIRTIO_BALLOON_F_STATS_VQ);
}
}
} while(FALSE);
if(NT_SUCCESS(status))
{
VirtIODeviceAddStatus(&devCtx->VDevice, VIRTIO_CONFIG_S_DRIVER_OK);
}
else
{
VirtIODeviceAddStatus(&devCtx->VDevice, VIRTIO_CONFIG_S_FAILED);
}
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP, "<-- BalloonInit\n");
return status;
}
BOOLEAN
VirtIoHwInitialize(
IN PVOID DeviceExtension
)
{
PADAPTER_EXTENSION adaptExt;
BOOLEAN ret = FALSE;
#ifdef MSI_SUPPORTED
MESSAGE_INTERRUPT_INFORMATION msi_info;
#endif
RhelDbgPrint(TRACE_LEVEL_VERBOSE, ("%s (%d)\n", __FUNCTION__, KeGetCurrentIrql()));
adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
adaptExt->msix_vectors = 0;
#ifdef MSI_SUPPORTED
while(StorPortGetMSIInfo(DeviceExtension, adaptExt->msix_vectors, &msi_info) == STOR_STATUS_SUCCESS) {
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("MessageId = %x\n", msi_info.MessageId));
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("MessageData = %x\n", msi_info.MessageData));
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("InterruptVector = %x\n", msi_info.InterruptVector));
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("InterruptLevel = %x\n", msi_info.InterruptLevel));
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("InterruptMode = %s\n", msi_info.InterruptMode == LevelSensitive ? "LevelSensitive" : "Latched"));
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("MessageAddress = %p\n\n", msi_info.MessageAddress));
++adaptExt->msix_vectors;
}
if(!adaptExt->dump_mode && (adaptExt->msix_vectors > 1)) {
adaptExt->vq = FindVirtualQueue(adaptExt, 0, adaptExt->msix_vectors - 1);
}
#endif
if(!adaptExt->vq) {
adaptExt->vq = FindVirtualQueue(adaptExt, 0, 0);
}
if (!adaptExt->vq) {
LogError(DeviceExtension,
SP_INTERNAL_ADAPTER_ERROR,
__LINE__);
RhelDbgPrint(TRACE_LEVEL_FATAL, ("Cannot find snd virtual queue\n"));
VirtIODeviceAddStatus(&adaptExt->vdev, VIRTIO_CONFIG_S_FAILED);
return ret;
}
RhelGetDiskGeometry(DeviceExtension);
memset(&adaptExt->inquiry_data, 0, sizeof(INQUIRYDATA));
adaptExt->inquiry_data.ANSIVersion = 4;
adaptExt->inquiry_data.ResponseDataFormat = 2;
adaptExt->inquiry_data.CommandQueue = 1;
adaptExt->inquiry_data.DeviceType = DIRECT_ACCESS_DEVICE;
adaptExt->inquiry_data.Wide32Bit = 1;
adaptExt->inquiry_data.AdditionalLength = 91;
ScsiPortMoveMemory(&adaptExt->inquiry_data.VendorId, "Red Hat ", sizeof("Red Hat "));
ScsiPortMoveMemory(&adaptExt->inquiry_data.ProductId, "VirtIO", sizeof("VirtIO"));
ScsiPortMoveMemory(&adaptExt->inquiry_data.ProductRevisionLevel, "0001", sizeof("0001"));
ScsiPortMoveMemory(&adaptExt->inquiry_data.VendorSpecific, "0001", sizeof("0001"));
if(!adaptExt->dump_mode && !adaptExt->sn_ok)
{
RhelGetSerialNumber(DeviceExtension);
}
ret = TRUE;
#ifdef USE_STORPORT
if(!adaptExt->dump_mode && !adaptExt->dpc_ok)
{
ret = StorPortEnablePassiveInitialization(DeviceExtension, VirtIoPassiveInitializeRoutine);
}
#endif
if (ret) {
VirtIODeviceAddStatus(&adaptExt->vdev, VIRTIO_CONFIG_S_DRIVER_OK);
} else {
VirtIODeviceAddStatus(&adaptExt->vdev, VIRTIO_CONFIG_S_FAILED);
}
return ret;
}
ULONG
VirtIoFindAdapter(
IN PVOID DeviceExtension,
IN PVOID HwContext,
IN PVOID BusInformation,
IN PCHAR ArgumentString,
IN OUT PPORT_CONFIGURATION_INFORMATION ConfigInfo,
OUT PBOOLEAN Again
)
{
PACCESS_RANGE accessRange;
PADAPTER_EXTENSION adaptExt;
ULONG_PTR deviceBase;
ULONG allocationSize;
ULONG pageNum;
#ifdef MSI_SUPPORTED
PPCI_COMMON_CONFIG pPciConf = NULL;
UCHAR pci_cfg_buf[256];
ULONG pci_cfg_len;
#endif
UNREFERENCED_PARAMETER( HwContext );
UNREFERENCED_PARAMETER( BusInformation );
UNREFERENCED_PARAMETER( ArgumentString );
UNREFERENCED_PARAMETER( Again );
adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
adaptExt->dump_mode = IsCrashDumpMode;
ConfigInfo->Master = TRUE;
ConfigInfo->ScatterGather = TRUE;
ConfigInfo->DmaWidth = Width32Bits;
ConfigInfo->Dma32BitAddresses = TRUE;
ConfigInfo->Dma64BitAddresses = TRUE;
ConfigInfo->WmiDataProvider = FALSE;
ConfigInfo->AlignmentMask = 0x3;
#ifdef USE_STORPORT
ConfigInfo->MapBuffers = STOR_MAP_NON_READ_WRITE_BUFFERS;
ConfigInfo->SynchronizationModel = StorSynchronizeFullDuplex;
#ifdef MSI_SUPPORTED
ConfigInfo->HwMSInterruptRoutine = VirtIoMSInterruptRoutine;
ConfigInfo->InterruptSynchronizationMode=InterruptSynchronizePerMessage;
#endif
#else
ConfigInfo->MapBuffers = TRUE;
#endif
accessRange = &(*ConfigInfo->AccessRanges)[0];
ASSERT (FALSE == accessRange->RangeInMemory) ;
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("Port Resource [%08I64X-%08I64X]\n",
accessRange->RangeStart.QuadPart,
accessRange->RangeStart.QuadPart +
accessRange->RangeLength));
if ( accessRange->RangeLength < IO_PORT_LENGTH) {
LogError(DeviceExtension,
SP_INTERNAL_ADAPTER_ERROR,
__LINE__);
RhelDbgPrint(TRACE_LEVEL_FATAL, ("Wrong access range %x bytes\n", accessRange->RangeLength));
return SP_RETURN_NOT_FOUND;
}
#ifndef USE_STORPORT
if (!ScsiPortValidateRange(DeviceExtension,
ConfigInfo->AdapterInterfaceType,
ConfigInfo->SystemIoBusNumber,
accessRange->RangeStart,
accessRange->RangeLength,
(BOOLEAN)!accessRange->RangeInMemory)) {
LogError(DeviceExtension,
SP_INTERNAL_ADAPTER_ERROR,
__LINE__);
RhelDbgPrint(TRACE_LEVEL_FATAL, ("Range validation failed %x for %x bytes\n",
(*ConfigInfo->AccessRanges)[0].RangeStart.LowPart,
(*ConfigInfo->AccessRanges)[0].RangeLength));
return SP_RETURN_ERROR;
}
#endif
ConfigInfo->NumberOfBuses = 1;
ConfigInfo->MaximumNumberOfTargets = 1;
ConfigInfo->MaximumNumberOfLogicalUnits = 1;
deviceBase = (ULONG_PTR)ScsiPortGetDeviceBase(DeviceExtension,
ConfigInfo->AdapterInterfaceType,
ConfigInfo->SystemIoBusNumber,
accessRange->RangeStart,
accessRange->RangeLength,
(BOOLEAN)!accessRange->RangeInMemory);
if (deviceBase == (ULONG_PTR)NULL) {
LogError(DeviceExtension,
SP_INTERNAL_ADAPTER_ERROR,
__LINE__);
RhelDbgPrint(TRACE_LEVEL_FATAL, ("Couldn't map %x for %x bytes\n",
(*ConfigInfo->AccessRanges)[0].RangeStart.LowPart,
(*ConfigInfo->AccessRanges)[0].RangeLength));
return SP_RETURN_ERROR;
}
VirtIODeviceInitialize(&adaptExt->vdev, deviceBase, sizeof(adaptExt->vdev));
VirtIODeviceAddStatus(&adaptExt->vdev, VIRTIO_CONFIG_S_DRIVER);
adaptExt->msix_enabled = FALSE;
#ifdef MSI_SUPPORTED
pci_cfg_len = StorPortGetBusData (DeviceExtension,
PCIConfiguration,
ConfigInfo->SystemIoBusNumber,
(ULONG)ConfigInfo->SlotNumber,
(PVOID)pci_cfg_buf,
(ULONG)256);
if (pci_cfg_len == 256)
{
UCHAR CapOffset;
PPCI_MSIX_CAPABILITY pMsixCapOffset;
pPciConf = (PPCI_COMMON_CONFIG)pci_cfg_buf;
if ( (pPciConf->Status & PCI_STATUS_CAPABILITIES_LIST) == 0)
{
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("NO CAPABILITIES_LIST\n"));
}
else
{
if ( (pPciConf->HeaderType & (~PCI_MULTIFUNCTION)) == PCI_DEVICE_TYPE )
{
CapOffset = pPciConf->u.type0.CapabilitiesPtr;
while (CapOffset != 0)
{
pMsixCapOffset = (PPCI_MSIX_CAPABILITY)(pci_cfg_buf + CapOffset);
if ( pMsixCapOffset->Header.CapabilityID == PCI_CAPABILITY_ID_MSIX )
{
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("MessageControl.TableSize = %d\n", pMsixCapOffset->MessageControl.TableSize));
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("MessageControl.FunctionMask = %d\n", pMsixCapOffset->MessageControl.FunctionMask));
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("MessageControl.MSIXEnable = %d\n", pMsixCapOffset->MessageControl.MSIXEnable));
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("MessageTable = %p\n", pMsixCapOffset->MessageTable));
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("PBATable = %d\n", pMsixCapOffset->PBATable));
adaptExt->msix_enabled = (pMsixCapOffset->MessageControl.MSIXEnable == 1);
break;
}
else
{
CapOffset = pMsixCapOffset->Header.Next;
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("CapabilityID = %x, Next CapOffset = %x\n", pMsixCapOffset->Header.CapabilityID, CapOffset));
}
}
VirtIODeviceSetMSIXUsed(&adaptExt->vdev, adaptExt->msix_enabled);
}
else
{
RhelDbgPrint(TRACE_LEVEL_FATAL, ("NOT A PCI_DEVICE_TYPE\n"));
}
}
}
else
{
RhelDbgPrint(TRACE_LEVEL_FATAL, ("CANNOT READ PCI CONFIGURATION SPACE %d\n", pci_cfg_len));
}
#endif
VirtIODeviceReset(&adaptExt->vdev);
VirtIODeviceAddStatus(&adaptExt->vdev, VIRTIO_CONFIG_S_ACKNOWLEDGE);
WriteVirtIODeviceWord(adaptExt->vdev.addr + VIRTIO_PCI_QUEUE_SEL, (USHORT)0);
if (adaptExt->dump_mode) {
WriteVirtIODeviceWord(adaptExt->vdev.addr + VIRTIO_PCI_QUEUE_PFN, (USHORT)0);
}
adaptExt->features = ReadVirtIODeviceRegister(adaptExt->vdev.addr + VIRTIO_PCI_HOST_FEATURES);
ConfigInfo->CachesData = CHECKBIT(adaptExt->features, VIRTIO_BLK_F_WCACHE) ? TRUE : FALSE;
if (ConfigInfo->CachesData) {
u32 GuestFeatures = 0;
VirtIOFeatureEnable(GuestFeatures, VIRTIO_BLK_F_WCACHE);
VirtIODeviceWriteGuestFeatures(&adaptExt->vdev, GuestFeatures);
}
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("VIRTIO_BLK_F_WCACHE = %d\n", ConfigInfo->CachesData));
VirtIODeviceQueryQueueAllocation(&adaptExt->vdev, 0, &pageNum, &allocationSize);
if(adaptExt->dump_mode) {
ConfigInfo->NumberOfPhysicalBreaks = 8;
} else {
ConfigInfo->NumberOfPhysicalBreaks = MAX_PHYS_SEGMENTS + 1;
}
ConfigInfo->MaximumTransferLength = 0x00FFFFFF;
adaptExt->queue_depth = pageNum / ConfigInfo->NumberOfPhysicalBreaks - 1;
#if (INDIRECT_SUPPORTED)
if(!adaptExt->dump_mode) {
adaptExt->indirect = CHECKBIT(adaptExt->features, VIRTIO_RING_F_INDIRECT_DESC);
}
if(adaptExt->indirect) {
adaptExt->queue_depth = pageNum;
}
#else
adaptExt->indirect = 0;
#endif
RhelDbgPrint(TRACE_LEVEL_INFORMATION, ("breaks_number = %x queue_depth = %x\n",
ConfigInfo->NumberOfPhysicalBreaks,
adaptExt->queue_depth));
adaptExt->uncachedExtensionVa = ScsiPortGetUncachedExtension(DeviceExtension, ConfigInfo, allocationSize);
if (!adaptExt->uncachedExtensionVa) {
LogError(DeviceExtension,
SP_INTERNAL_ADAPTER_ERROR,
__LINE__);
RhelDbgPrint(TRACE_LEVEL_FATAL, ("Couldn't get uncached extension\n"));
return SP_RETURN_ERROR;
}
InitializeListHead(&adaptExt->list_head);
#ifdef USE_STORPORT
InitializeListHead(&adaptExt->complete_list);
#endif
return SP_RETURN_FOUND;
}
NTSTATUS
VIOSerialEvtDevicePrepareHardware(
IN WDFDEVICE Device,
IN WDFCMRESLIST ResourcesRaw,
IN WDFCMRESLIST ResourcesTranslated)
{
int nListSize = 0;
PCM_PARTIAL_RESOURCE_DESCRIPTOR pResDescriptor;
WDF_INTERRUPT_INFO interruptInfo;
int i = 0;
PPORTS_DEVICE pContext = GetPortsDevice(Device);
bool bPortFound = FALSE;
NTSTATUS status = STATUS_SUCCESS;
UINT nr_ports, max_queues, size_to_allocate;
UNREFERENCED_PARAMETER(ResourcesRaw);
PAGED_CODE();
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_HW_ACCESS, "<--> %s\n", __FUNCTION__);
max_queues = 64; // 2 for each of max 32 ports
size_to_allocate = VirtIODeviceSizeRequired((USHORT)max_queues);
pContext->pIODevice = (VirtIODevice *)ExAllocatePoolWithTag(
NonPagedPool,
size_to_allocate,
VIOSERIAL_DRIVER_MEMORY_TAG);
if (NULL == pContext->pIODevice)
{
return STATUS_INSUFFICIENT_RESOURCES;
}
nListSize = WdfCmResourceListGetCount(ResourcesTranslated);
for (i = 0; i < nListSize; i++)
{
if(pResDescriptor = WdfCmResourceListGetDescriptor(ResourcesTranslated, i))
{
switch(pResDescriptor->Type)
{
case CmResourceTypePort :
pContext->bPortMapped = (pResDescriptor->Flags & CM_RESOURCE_PORT_IO) ? FALSE : TRUE;
pContext->PortBasePA = pResDescriptor->u.Port.Start;
pContext->uPortLength = pResDescriptor->u.Port.Length;
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP, "IO Port Info [%08I64X-%08I64X]\n",
pResDescriptor->u.Port.Start.QuadPart,
pResDescriptor->u.Port.Start.QuadPart +
pResDescriptor->u.Port.Length);
if (pContext->bPortMapped )
{
pContext->pPortBase = MmMapIoSpace(pContext->PortBasePA,
pContext->uPortLength,
MmNonCached);
if (!pContext->pPortBase) {
TraceEvents(TRACE_LEVEL_ERROR, DBG_HW_ACCESS, "%s>>> Failed to map IO port!\n", __FUNCTION__);
return STATUS_INSUFFICIENT_RESOURCES;
}
}
else
{
pContext->pPortBase = (PVOID)(ULONG_PTR)pContext->PortBasePA.QuadPart;
}
bPortFound = TRUE;
break;
case CmResourceTypeInterrupt:
break;
}
}
}
if(!bPortFound)
{
TraceEvents(TRACE_LEVEL_ERROR, DBG_HW_ACCESS, "%s>>> %s", __FUNCTION__, "IO port wasn't found!\n");
return STATUS_DEVICE_CONFIGURATION_ERROR;
}
WDF_INTERRUPT_INFO_INIT(&interruptInfo);
WdfInterruptGetInfo(pContext->WdfInterrupt, &interruptInfo);
VirtIODeviceInitialize(pContext->pIODevice, (ULONG_PTR)pContext->pPortBase, size_to_allocate);
VirtIODeviceSetMSIXUsed(pContext->pIODevice, interruptInfo.MessageSignaled);
VirtIODeviceReset(pContext->pIODevice);
VirtIODeviceAddStatus(pContext->pIODevice, VIRTIO_CONFIG_S_ACKNOWLEDGE);
pContext->consoleConfig.max_nr_ports = 1;
if(pContext->isHostMultiport = VirtIODeviceGetHostFeature(pContext->pIODevice, VIRTIO_CONSOLE_F_MULTIPORT))
{
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "We have multiport host\n");
VirtIODeviceEnableGuestFeature(pContext->pIODevice, VIRTIO_CONSOLE_F_MULTIPORT);
VirtIODeviceGet(pContext->pIODevice,
FIELD_OFFSET(CONSOLE_CONFIG, max_nr_ports),
&pContext->consoleConfig.max_nr_ports,
sizeof(pContext->consoleConfig.max_nr_ports));
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,
"VirtIOConsoleConfig->max_nr_ports %d\n", pContext->consoleConfig.max_nr_ports);
if (pContext->consoleConfig.max_nr_ports > pContext->pIODevice->maxQueues / 2)
{
pContext->consoleConfig.max_nr_ports = pContext->pIODevice->maxQueues / 2;
TraceEvents(TRACE_LEVEL_WARNING, DBG_PNP,
"VirtIOConsoleConfig->max_nr_ports limited to %d\n", pContext->consoleConfig.max_nr_ports);
}
}
if(pContext->isHostMultiport)
{
WDF_OBJECT_ATTRIBUTES attributes;
WDF_OBJECT_ATTRIBUTES_INIT(&attributes);
attributes.ParentObject = Device;
status = WdfSpinLockCreate(
&attributes,
&pContext->CVqLock
);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR, DBG_INIT,
"WdfSpinLockCreate failed 0x%x\n", status);
return status;
}
}
else
{
//FIXME
// VIOSerialAddPort(Device, 0);
}
nr_ports = pContext->consoleConfig.max_nr_ports;
pContext->in_vqs = (struct virtqueue**)ExAllocatePoolWithTag(
NonPagedPool,
nr_ports * sizeof(struct virtqueue*),
VIOSERIAL_DRIVER_MEMORY_TAG);
if(pContext->in_vqs == NULL)
{
TraceEvents(TRACE_LEVEL_ERROR, DBG_INIT,"ExAllocatePoolWithTag failed\n");
return STATUS_INSUFFICIENT_RESOURCES;
}
memset(pContext->in_vqs, 0, nr_ports * sizeof(struct virtqueue*));
pContext->out_vqs = (struct virtqueue**)ExAllocatePoolWithTag(
NonPagedPool,
nr_ports * sizeof(struct virtqueue*),
VIOSERIAL_DRIVER_MEMORY_TAG
);
if(pContext->out_vqs == NULL)
{
TraceEvents(TRACE_LEVEL_ERROR, DBG_INIT, "ExAllocatePoolWithTag failed\n");
return STATUS_INSUFFICIENT_RESOURCES;
}
memset(pContext->out_vqs, 0, nr_ports * sizeof(struct virtqueue*));
pContext->DeviceOK = TRUE;
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_HW_ACCESS, "<-- %s\n", __FUNCTION__);
return status;
}
