NTSTATUS
BalloonInit(
IN WDFOBJECT WdfDevice
)
{
NTSTATUS status = STATUS_SUCCESS;
PDEVICE_CONTEXT devCtx = GetDeviceContext(WdfDevice);
u32 hostFeatures;
u32 guestFeatures;
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;
}
guestFeatures = 0;
hostFeatures = VirtIODeviceReadHostFeatures(&devCtx->VDevice);
if(VirtIOIsFeatureEnabled(hostFeatures, 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);
VirtIOFeatureEnable(guestFeatures, VIRTIO_BALLOON_F_STATS_VQ);
}
} while(FALSE);
VirtIODeviceWriteGuestFeatures(&devCtx->VDevice, guestFeatures);
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;
}
NTSTATUS
VIOSerialEvtDevicePrepareHardware(
IN WDFDEVICE Device,
IN WDFCMRESLIST ResourcesRaw,
IN WDFCMRESLIST ResourcesTranslated)
{
int nListSize = 0;
PCM_PARTIAL_RESOURCE_DESCRIPTOR pResDescriptor;
int i = 0;
PPORTS_DEVICE pContext = GetPortsDevice(Device);
bool bPortFound = FALSE;
NTSTATUS status = STATUS_SUCCESS;
UINT nr_ports, max_queues, size_to_allocate;
BOOLEAN MessageSignaled = FALSE;
USHORT Interrupts = 0;
u32 u32HostFeatures;
u32 u32GuestFeatures = 0;
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:
TraceEvents(TRACE_LEVEL_VERBOSE, DBG_INIT,
"Interrupt Level: 0x%08x, Vector: 0x%08x\n",
pResDescriptor->u.Interrupt.Level,
pResDescriptor->u.Interrupt.Vector);
Interrupts += 1;
MessageSignaled = !!(pResDescriptor->Flags &
(CM_RESOURCE_INTERRUPT_LATCHED | CM_RESOURCE_INTERRUPT_MESSAGE));
break;
}
}
}
if(!bPortFound)
{
TraceEvents(TRACE_LEVEL_ERROR, DBG_HW_ACCESS, "%s>>> %s", __FUNCTION__, "IO port wasn't found!\n");
return STATUS_DEVICE_CONFIGURATION_ERROR;
}
VirtIODeviceInitialize(pContext->pIODevice, (ULONG_PTR)pContext->pPortBase, size_to_allocate);
VirtIODeviceSetMSIXUsed(pContext->pIODevice, MessageSignaled);
VirtIODeviceReset(pContext->pIODevice);
VirtIODeviceAddStatus(pContext->pIODevice, VIRTIO_CONFIG_S_ACKNOWLEDGE);
if (MessageSignaled)
{
WriteVirtIODeviceWord(
pContext->pIODevice->addr + VIRTIO_MSI_CONFIG_VECTOR, Interrupts);
Interrupts = ReadVirtIODeviceWord(
pContext->pIODevice->addr + VIRTIO_MSI_CONFIG_VECTOR);
}
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,
"MessageSignaled: %d Interrupts: %x.\n",
MessageSignaled, Interrupts);
pContext->consoleConfig.max_nr_ports = 1;
u32HostFeatures = VirtIODeviceReadHostFeatures(pContext->pIODevice);
if(pContext->isHostMultiport = VirtIOIsFeatureEnabled(u32HostFeatures, VIRTIO_CONSOLE_F_MULTIPORT))
{
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "We have multiport host\n");
VirtIOFeatureEnable(u32GuestFeatures, 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);
}
}
VirtIODeviceWriteGuestFeatures(pContext->pIODevice, u32GuestFeatures);
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;
}
