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virtio_stor.c
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/*
* This file contains viostor StorPort(ScsiPort) miniport driver
*
* Copyright (c) 2008-2017 Red Hat, Inc.
*
* Author(s):
* Vadim Rozenfeld <[email protected]>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met :
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and / or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of their contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "virtio_stor.h"
#if defined(EVENT_TRACING)
#include "virtio_stor.tmh"
#endif
BOOLEAN IsCrashDumpMode;
#ifdef EVENT_TRACING
PVOID TraceContext;
#endif
sp_DRIVER_INITIALIZE DriverEntry;
HW_INITIALIZE VirtIoHwInitialize;
HW_STARTIO VirtIoStartIo;
HW_FIND_ADAPTER VirtIoFindAdapter;
HW_RESET_BUS VirtIoResetBus;
HW_ADAPTER_CONTROL VirtIoAdapterControl;
HW_INTERRUPT VirtIoInterrupt;
HW_BUILDIO VirtIoBuildIo;
HW_DPC_ROUTINE CompleteDpcRoutine;
HW_MESSAGE_SIGNALED_INTERRUPT_ROUTINE VirtIoMSInterruptRoutine;
HW_PASSIVE_INITIALIZE_ROUTINE VirtIoPassiveInitializeRoutine;
extern int vring_add_buf_stor(IN struct virtqueue *_vq,
IN struct VirtIOBufferDescriptor sg[],
IN unsigned int out,
IN unsigned int in,
IN PVOID data);
BOOLEAN
VirtIoHwInitialize(IN PVOID DeviceExtension);
BOOLEAN
VirtIoHwReinitialize(IN PVOID DeviceExtension);
BOOLEAN
VirtIoBuildIo(IN PVOID DeviceExtension, IN PSCSI_REQUEST_BLOCK Srb);
VOID CompleteDpcRoutine(IN PSTOR_DPC Dpc, IN PVOID Context, IN PVOID SystemArgument1, IN PVOID SystemArgument2);
BOOLEAN
VirtIoMSInterruptRoutine(IN PVOID DeviceExtension, IN ULONG MessageID);
BOOLEAN
VirtIoStartIo(IN PVOID DeviceExtension, IN PSCSI_REQUEST_BLOCK Srb);
ULONG
VirtIoFindAdapter(IN PVOID DeviceExtension,
IN PVOID HwContext,
IN PVOID BusInformation,
IN PCHAR ArgumentString,
IN OUT PPORT_CONFIGURATION_INFORMATION ConfigInfo,
OUT PBOOLEAN Again);
BOOLEAN
VirtIoResetBus(IN PVOID DeviceExtension, IN ULONG PathId);
SCSI_ADAPTER_CONTROL_STATUS
VirtIoAdapterControl(IN PVOID DeviceExtension, IN SCSI_ADAPTER_CONTROL_TYPE ControlType, IN PVOID Parameters);
UCHAR
RhelScsiGetInquiryData(IN PVOID DeviceExtension, IN OUT PSRB_TYPE Srb);
UCHAR
RhelScsiGetModeSense(IN PVOID DeviceExtension, IN OUT PSRB_TYPE Srb);
UCHAR
RhelScsiGetCapacity(IN PVOID DeviceExtension, IN OUT PSRB_TYPE Srb);
VOID RhelSetGuestFeatures(IN PVOID DeviceExtension);
UCHAR
RhelScsiVerify(IN PVOID DeviceExtension, IN OUT PSRB_TYPE Srb);
UCHAR
RhelScsiReportLuns(IN PVOID DeviceExtension, IN OUT PSRB_TYPE Srb);
VOID FORCEINLINE CompleteSRB(IN PVOID DeviceExtension, IN PSRB_TYPE Srb);
VOID FORCEINLINE DeviceChangeNotification(IN PVOID DeviceExtension, IN BOOLEAN bLun);
BOOLEAN
FORCEINLINE
SetSenseInfo(IN PVOID DeviceExtension, IN PSRB_TYPE Srb);
BOOLEAN
FORCEINLINE
CompleteDPC(IN PVOID DeviceExtension, IN ULONG MessageID);
UCHAR FirmwareRequest(IN PVOID DeviceExtension, IN PSRB_TYPE Srb);
VOID ReportDeviceIdentifier(IN PVOID DeviceExtension, IN PSRB_TYPE Srb);
#ifdef EVENT_TRACING
VOID WppCleanupRoutine(PVOID arg1)
{
RhelDbgPrint(TRACE_LEVEL_INFORMATION, " WppCleanupRoutine\n");
WPP_CLEANUP(NULL, TraceContext);
}
#endif
ULONG
DriverEntry(IN PVOID DriverObject, IN PVOID RegistryPath)
{
HW_INITIALIZATION_DATA hwInitData;
ULONG initResult;
#ifdef EVENT_TRACING
STORAGE_TRACE_INIT_INFO initInfo;
#else
// FIXME
#ifdef DBG
InitializeDebugPrints((PDRIVER_OBJECT)DriverObject, (PUNICODE_STRING)RegistryPath);
#endif
#endif
RhelDbgPrint(TRACE_LEVEL_ERROR, " Viostor driver started...built on %s %s\n", __DATE__, __TIME__);
IsCrashDumpMode = FALSE;
if (RegistryPath == NULL)
{
RhelDbgPrint(TRACE_LEVEL_INFORMATION, " DriverEntry: Crash dump mode\n");
IsCrashDumpMode = TRUE;
}
memset(&hwInitData, 0, sizeof(HW_INITIALIZATION_DATA));
hwInitData.HwInitializationDataSize = sizeof(HW_INITIALIZATION_DATA);
hwInitData.HwFindAdapter = VirtIoFindAdapter;
hwInitData.HwInitialize = VirtIoHwInitialize;
hwInitData.HwStartIo = VirtIoStartIo;
hwInitData.HwInterrupt = VirtIoInterrupt;
hwInitData.HwResetBus = VirtIoResetBus;
hwInitData.HwAdapterControl = VirtIoAdapterControl;
hwInitData.HwBuildIo = VirtIoBuildIo;
hwInitData.NeedPhysicalAddresses = TRUE;
hwInitData.TaggedQueuing = TRUE;
hwInitData.AutoRequestSense = TRUE;
hwInitData.MultipleRequestPerLu = TRUE;
hwInitData.DeviceExtensionSize = sizeof(ADAPTER_EXTENSION);
hwInitData.SrbExtensionSize = sizeof(SRB_EXTENSION);
hwInitData.AdapterInterfaceType = PCIBus;
/* Virtio doesn't specify the number of BARs used by the device; it may
* be one, it may be more. PCI_TYPE0_ADDRESSES, the theoretical maximum
* on PCI, is a safe upper bound.
*/
hwInitData.NumberOfAccessRanges = PCI_TYPE0_ADDRESSES;
hwInitData.MapBuffers = STOR_MAP_NON_READ_WRITE_BUFFERS;
hwInitData.SrbTypeFlags = SRB_TYPE_FLAG_STORAGE_REQUEST_BLOCK;
initResult = StorPortInitialize(DriverObject, RegistryPath, &hwInitData, NULL);
#ifdef EVENT_TRACING
TraceContext = NULL;
memset(&initInfo, 0, sizeof(STORAGE_TRACE_INIT_INFO));
initInfo.Size = sizeof(STORAGE_TRACE_INIT_INFO);
initInfo.DriverObject = DriverObject;
initInfo.NumErrorLogRecords = 5;
initInfo.TraceCleanupRoutine = WppCleanupRoutine;
initInfo.TraceContext = NULL;
WPP_INIT_TRACING(DriverObject, RegistryPath, &initInfo);
if (initInfo.TraceContext != NULL)
{
TraceContext = initInfo.TraceContext;
}
#endif
RhelDbgPrint(TRACE_LEVEL_VERBOSE, " Initialize returned 0x%x\n", initResult);
return initResult;
}
static ULONG InitVirtIODevice(PVOID DeviceExtension)
{
PADAPTER_EXTENSION adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
NTSTATUS status;
status = virtio_device_initialize(&adaptExt->vdev, &VioStorSystemOps, adaptExt, adaptExt->msix_enabled);
if (!NT_SUCCESS(status))
{
LogError(adaptExt, SP_INTERNAL_ADAPTER_ERROR, __LINE__);
RhelDbgPrint(TRACE_LEVEL_FATAL, " Failed to initialize virtio device, error %x\n", status);
if (status == STATUS_DEVICE_NOT_CONNECTED)
{
return SP_RETURN_NOT_FOUND;
}
return SP_RETURN_ERROR;
}
return SP_RETURN_FOUND;
}
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;
USHORT queueLength;
ULONG pci_cfg_len;
ULONG res, i;
ULONG index;
ULONG num_cpus;
ULONG max_cpus;
ULONG max_queues;
ULONG Size;
ULONG HeapSize;
PVOID uncachedExtensionVa;
ULONG extensionSize;
UNREFERENCED_PARAMETER(HwContext);
UNREFERENCED_PARAMETER(BusInformation);
UNREFERENCED_PARAMETER(ArgumentString);
UNREFERENCED_PARAMETER(Again);
adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
RtlZeroMemory(adaptExt, sizeof(ADAPTER_EXTENSION));
adaptExt->system_io_bus_number = ConfigInfo->SystemIoBusNumber;
adaptExt->slot_number = ConfigInfo->SlotNumber;
adaptExt->dump_mode = IsCrashDumpMode;
ConfigInfo->Master = TRUE;
ConfigInfo->ScatterGather = TRUE;
ConfigInfo->DmaWidth = Width32Bits;
ConfigInfo->Dma32BitAddresses = TRUE;
ConfigInfo->Dma64BitAddresses = SCSI_DMA64_MINIPORT_FULL64BIT_SUPPORTED;
ConfigInfo->WmiDataProvider = FALSE;
ConfigInfo->AlignmentMask = 0x3;
ConfigInfo->MapBuffers = STOR_MAP_NON_READ_WRITE_BUFFERS;
ConfigInfo->SynchronizationModel = StorSynchronizeFullDuplex;
ConfigInfo->HwMSInterruptRoutine = VirtIoMSInterruptRoutine;
ConfigInfo->InterruptSynchronizationMode = InterruptSynchronizePerMessage;
pci_cfg_len = StorPortGetBusData(DeviceExtension,
PCIConfiguration,
ConfigInfo->SystemIoBusNumber,
(ULONG)ConfigInfo->SlotNumber,
(PVOID)&adaptExt->pci_config_buf,
sizeof(adaptExt->pci_config_buf));
if (pci_cfg_len != sizeof(adaptExt->pci_config_buf))
{
RhelDbgPrint(TRACE_LEVEL_FATAL, " CANNOT READ PCI CONFIGURATION SPACE %d\n", pci_cfg_len);
return SP_RETURN_ERROR;
}
/* initialize the pci_bars array */
for (i = 0; i < ConfigInfo->NumberOfAccessRanges; i++)
{
accessRange = *ConfigInfo->AccessRanges + i;
if (accessRange->RangeLength != 0)
{
int iBar = virtio_get_bar_index(&adaptExt->pci_config, accessRange->RangeStart);
if (iBar == -1)
{
RhelDbgPrint(TRACE_LEVEL_FATAL, " Cannot get index for BAR %I64d\n", accessRange->RangeStart.QuadPart);
return FALSE;
}
adaptExt->pci_bars[iBar].BasePA = accessRange->RangeStart;
adaptExt->pci_bars[iBar].uLength = accessRange->RangeLength;
adaptExt->pci_bars[iBar].bPortSpace = !accessRange->RangeInMemory;
}
}
adaptExt->msix_enabled = FALSE;
{
UCHAR CapOffset;
PPCI_MSIX_CAPABILITY pMsixCapOffset;
PPCI_COMMON_HEADER pPciComHeader;
pPciComHeader = &adaptExt->pci_config;
if ((pPciComHeader->Status & PCI_STATUS_CAPABILITIES_LIST) == 0)
{
RhelDbgPrint(TRACE_LEVEL_FATAL, " NO CAPABILITIES_LIST\n");
}
else
{
if ((pPciComHeader->HeaderType & (~PCI_MULTIFUNCTION)) == PCI_DEVICE_TYPE)
{
CapOffset = pPciComHeader->u.type0.CapabilitiesPtr;
while (CapOffset != 0)
{
pMsixCapOffset = (PPCI_MSIX_CAPABILITY)&adaptExt->pci_config_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 = %lu\n",
pMsixCapOffset->MessageTable.TableOffset);
RhelDbgPrint(TRACE_LEVEL_INFORMATION,
" PBATable = %lu\n",
pMsixCapOffset->PBATable.TableOffset);
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);
}
}
}
else
{
RhelDbgPrint(TRACE_LEVEL_FATAL, " NOT A PCI_DEVICE_TYPE\n");
}
}
}
adaptExt->device_address.Type = STOR_ADDRESS_TYPE_BTL8;
adaptExt->device_address.Port = 0;
adaptExt->device_address.AddressLength = STOR_ADDR_BTL8_ADDRESS_LENGTH;
adaptExt->device_address.Path = 0;
adaptExt->device_address.Target = 0;
adaptExt->device_address.Lun = 0;
/* initialize the virtual device */
res = InitVirtIODevice(DeviceExtension);
if (res != SP_RETURN_FOUND)
{
return res;
}
RhelGetDiskGeometry(DeviceExtension);
RhelSetGuestFeatures(DeviceExtension);
ConfigInfo->NumberOfBuses = 1;
ConfigInfo->MaximumNumberOfTargets = 1;
ConfigInfo->MaximumNumberOfLogicalUnits = 1;
ConfigInfo->CachesData = CHECKBIT(adaptExt->features, VIRTIO_BLK_F_FLUSH) ? TRUE : FALSE;
RhelDbgPrint(TRACE_LEVEL_INFORMATION, " VIRTIO_BLK_F_WCACHE = %d\n", ConfigInfo->CachesData);
RhelDbgPrint(TRACE_LEVEL_INFORMATION, " VIRTIO_BLK_F_MQ = %d\n", CHECKBIT(adaptExt->features, VIRTIO_BLK_F_MQ));
virtio_query_queue_allocation(&adaptExt->vdev,
0,
&queueLength,
&adaptExt->pageAllocationSize,
&adaptExt->poolAllocationSize);
if (!adaptExt->dump_mode)
{
adaptExt->indirect = CHECKBIT(adaptExt->features, VIRTIO_RING_F_INDIRECT_DESC);
}
if (adaptExt->dump_mode)
{
ConfigInfo->NumberOfPhysicalBreaks = SCSI_MINIMUM_PHYSICAL_BREAKS;
}
else
{
ConfigInfo->NumberOfPhysicalBreaks = MAX_PHYS_SEGMENTS;
}
if (adaptExt->indirect)
{
adaptExt->queue_depth = queueLength;
}
else
{
ConfigInfo->NumberOfPhysicalBreaks = max(SCSI_MINIMUM_PHYSICAL_BREAKS, (queueLength / 4));
adaptExt->queue_depth = max(((queueLength / ConfigInfo->NumberOfPhysicalBreaks) - 1), 1);
}
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_SEG_MAX))
{
ULONG size_max = adaptExt->info.size_max;
ULONG seg_max = adaptExt->info.seg_max;
if ((size_max > 0) && (seg_max > 0))
{
seg_max = (ULONG)((ULONGLONG)seg_max * size_max) / (ROUND_TO_PAGES(size_max));
ConfigInfo->NumberOfPhysicalBreaks = seg_max - 1;
}
}
ConfigInfo->MaximumTransferLength = ConfigInfo->NumberOfPhysicalBreaks * PAGE_SIZE;
ConfigInfo->NumberOfPhysicalBreaks++;
adaptExt->max_tx_length = ConfigInfo->MaximumTransferLength;
num_cpus = KeQueryActiveProcessorCountEx(ALL_PROCESSOR_GROUPS);
max_cpus = KeQueryMaximumProcessorCountEx(ALL_PROCESSOR_GROUPS);
/* Set num_cpus and max_cpus to some sane values, to keep Static Driver Verification happy */
num_cpus = max(1, num_cpus);
max_cpus = max(1, max_cpus);
adaptExt->num_queues = 1;
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_MQ))
{
virtio_get_config(&adaptExt->vdev,
FIELD_OFFSET(blk_config, num_queues),
&adaptExt->num_queues,
sizeof(adaptExt->num_queues));
}
if (adaptExt->dump_mode || !adaptExt->msix_enabled)
{
adaptExt->num_queues = 1;
}
else
{
adaptExt->num_queues = min(adaptExt->num_queues, (USHORT)num_cpus);
}
RhelDbgPrint(TRACE_LEVEL_INFORMATION, " Queues %d CPUs %d\n", adaptExt->num_queues, num_cpus);
max_queues = min(max_cpus, adaptExt->num_queues);
adaptExt->pageAllocationSize = 0;
adaptExt->poolAllocationSize = 0;
adaptExt->pageOffset = 0;
adaptExt->poolOffset = 0;
Size = 0;
for (index = 0; index < max_queues; ++index)
{
virtio_query_queue_allocation(&adaptExt->vdev, index, &queueLength, &Size, &HeapSize);
if (Size == 0)
{
LogError(DeviceExtension, SP_INTERNAL_ADAPTER_ERROR, __LINE__);
RhelDbgPrint(TRACE_LEVEL_FATAL, " Virtual queue %d config failed.\n", index);
return SP_RETURN_ERROR;
}
adaptExt->pageAllocationSize += ROUND_TO_PAGES(Size);
adaptExt->poolAllocationSize += ROUND_TO_CACHE_LINES(HeapSize);
}
if (!adaptExt->dump_mode)
{
adaptExt->poolAllocationSize += ROUND_TO_CACHE_LINES(sizeof(SRB_EXTENSION));
adaptExt->poolAllocationSize += ROUND_TO_CACHE_LINES(sizeof(STOR_DPC) * max_queues);
}
if (max_queues > MAX_QUEUES_PER_DEVICE_DEFAULT)
{
adaptExt->poolAllocationSize += ROUND_TO_CACHE_LINES((ULONGLONG)(max_queues)*virtio_get_queue_descriptor_size());
}
RhelDbgPrint(TRACE_LEVEL_INFORMATION,
" breaks_number = %x queue_depth = %x\n",
ConfigInfo->NumberOfPhysicalBreaks,
adaptExt->queue_depth);
extensionSize = PAGE_SIZE + adaptExt->pageAllocationSize + adaptExt->poolAllocationSize;
uncachedExtensionVa = StorPortGetUncachedExtension(DeviceExtension, ConfigInfo, extensionSize);
RhelDbgPrint(TRACE_LEVEL_INFORMATION,
" StorPortGetUncachedExtension uncachedExtensionVa = %p allocation size = %d\n",
uncachedExtensionVa,
extensionSize);
if (!uncachedExtensionVa)
{
LogError(DeviceExtension, SP_INTERNAL_ADAPTER_ERROR, __LINE__);
RhelDbgPrint(TRACE_LEVEL_FATAL, " Can't get uncached extension allocation size = %d\n", extensionSize);
return SP_RETURN_ERROR;
}
adaptExt->pageAllocationVa = (PVOID)(((ULONG_PTR)(uncachedExtensionVa) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1));
if (adaptExt->poolAllocationSize > 0)
{
adaptExt->poolAllocationVa = (PVOID)((ULONG_PTR)adaptExt->pageAllocationVa + adaptExt->pageAllocationSize);
}
RhelDbgPrint(TRACE_LEVEL_INFORMATION,
" Page-aligned area at %p, size = %d\n",
adaptExt->pageAllocationVa,
adaptExt->pageAllocationSize);
RhelDbgPrint(TRACE_LEVEL_INFORMATION,
" Pool area at %p, size = %d\n",
adaptExt->poolAllocationVa,
adaptExt->poolAllocationSize);
RhelDbgPrint(TRACE_LEVEL_INFORMATION, " pmsg_affinity = %p\n", adaptExt->pmsg_affinity);
if (!adaptExt->dump_mode && (adaptExt->num_queues > 1) && (adaptExt->pmsg_affinity == NULL))
{
adaptExt->num_affinity = adaptExt->num_queues + 1;
ULONG Status = StorPortAllocatePool(DeviceExtension,
sizeof(GROUP_AFFINITY) * (ULONGLONG)adaptExt->num_affinity,
VIOBLK_POOL_TAG,
(PVOID *)&adaptExt->pmsg_affinity);
RhelDbgPrint(TRACE_LEVEL_FATAL, " pmsg_affinity = %p Status = %lu\n", adaptExt->pmsg_affinity, Status);
}
adaptExt->fw_ver = '0';
return SP_RETURN_FOUND;
}
BOOLEAN
VirtIoPassiveInitializeRoutine(IN PVOID DeviceExtension)
{
ULONG index;
PADAPTER_EXTENSION adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
for (index = 0; index < adaptExt->num_queues; ++index)
{
StorPortInitializeDpc(DeviceExtension, &adaptExt->dpc[index], CompleteDpcRoutine);
}
adaptExt->dpc_ok = TRUE;
return TRUE;
}
static BOOLEAN InitializeVirtualQueues(PADAPTER_EXTENSION adaptExt)
{
NTSTATUS status;
ULONG numQueues = adaptExt->num_queues;
RhelDbgPrint(TRACE_LEVEL_INFORMATION, " InitializeVirtualQueues numQueues %d\n", numQueues);
status = virtio_find_queues(&adaptExt->vdev, numQueues, adaptExt->vq);
if (!NT_SUCCESS(status))
{
RhelDbgPrint(TRACE_LEVEL_FATAL, " virtio_find_queues failed with error %x\n", status);
return FALSE;
}
return TRUE;
}
VOID RhelSetGuestFeatures(IN PVOID DeviceExtension)
{
ULONGLONG guestFeatures = 0;
PADAPTER_EXTENSION adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
if (CHECKBIT(adaptExt->features, VIRTIO_F_VERSION_1))
{
guestFeatures |= (1ULL << VIRTIO_F_VERSION_1);
if (CHECKBIT(adaptExt->features, VIRTIO_F_RING_PACKED))
{
guestFeatures |= (1ULL << VIRTIO_F_RING_PACKED);
}
}
if (CHECKBIT(adaptExt->features, VIRTIO_F_ACCESS_PLATFORM))
{
guestFeatures |= (1ULL << VIRTIO_F_ACCESS_PLATFORM);
}
if (CHECKBIT(adaptExt->features, VIRTIO_F_ANY_LAYOUT))
{
guestFeatures |= (1ULL << VIRTIO_F_ANY_LAYOUT);
}
if (CHECKBIT(adaptExt->features, VIRTIO_RING_F_EVENT_IDX))
{
guestFeatures |= (1ULL << VIRTIO_RING_F_EVENT_IDX);
}
if (CHECKBIT(adaptExt->features, VIRTIO_RING_F_INDIRECT_DESC))
{
guestFeatures |= (1ULL << VIRTIO_RING_F_INDIRECT_DESC);
}
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_FLUSH))
{
guestFeatures |= (1ULL << VIRTIO_BLK_F_FLUSH);
}
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_BARRIER))
{
guestFeatures |= (1ULL << VIRTIO_BLK_F_BARRIER);
}
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_RO))
{
guestFeatures |= (1ULL << VIRTIO_BLK_F_RO);
}
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_SIZE_MAX))
{
guestFeatures |= (1ULL << VIRTIO_BLK_F_SIZE_MAX);
}
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_SEG_MAX))
{
guestFeatures |= (1ULL << VIRTIO_BLK_F_SEG_MAX);
}
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_BLK_SIZE))
{
guestFeatures |= (1ULL << VIRTIO_BLK_F_BLK_SIZE);
}
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_GEOMETRY))
{
guestFeatures |= (1ULL << VIRTIO_BLK_F_GEOMETRY);
}
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_MQ))
{
guestFeatures |= (1ULL << VIRTIO_BLK_F_MQ);
}
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_DISCARD))
{
guestFeatures |= (1ULL << VIRTIO_BLK_F_DISCARD);
}
if (CHECKBIT(adaptExt->features, VIRTIO_BLK_F_WRITE_ZEROES))
{
guestFeatures |= (1ULL << VIRTIO_BLK_F_WRITE_ZEROES);
}
if (CHECKBIT(adaptExt->features, VIRTIO_F_ORDER_PLATFORM))
{
guestFeatures |= (1ULL << VIRTIO_F_ORDER_PLATFORM);
}
if (!NT_SUCCESS(virtio_set_features(&adaptExt->vdev, guestFeatures)))
{
RhelDbgPrint(TRACE_LEVEL_FATAL, " virtio_set_features failed\n");
return;
}
RhelDbgPrint(TRACE_LEVEL_VERBOSE, " Host Features %llu gust features %llu\n", adaptExt->features, guestFeatures);
}
BOOLEAN
VirtIoHwInitialize(IN PVOID DeviceExtension)
{
PADAPTER_EXTENSION adaptExt;
BOOLEAN ret = FALSE;
ULONGLONG guestFeatures = 0;
PERF_CONFIGURATION_DATA perfData = {0};
ULONG status = STOR_STATUS_SUCCESS;
MESSAGE_INTERRUPT_INFORMATION msi_info = {0};
PREQUEST_LIST element = NULL;
adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
adaptExt->msix_vectors = 0;
adaptExt->pageOffset = 0;
adaptExt->poolOffset = 0;
adaptExt->stopped = FALSE;
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 = %I64x\n\n", msi_info.MessageAddress.QuadPart);
++adaptExt->msix_vectors;
}
RhelDbgPrint(TRACE_LEVEL_INFORMATION, " Queues %d msix_vectors %d\n", adaptExt->num_queues, adaptExt->msix_vectors);
if (adaptExt->num_queues > 1 && ((adaptExt->num_queues + 1U) > adaptExt->msix_vectors))
{
adaptExt->num_queues = (USHORT)adaptExt->msix_vectors;
}
if (adaptExt->msix_vectors >= (adaptExt->num_queues + 1U))
{
/* initialize queues with a MSI vector per queue */
RhelDbgPrint(TRACE_LEVEL_INFORMATION, (" Using a unique MSI vector per queue\n"));
adaptExt->msix_one_vector = FALSE;
}
else
{
/* if we don't have enough vectors, use one for all queues */
RhelDbgPrint(TRACE_LEVEL_INFORMATION, (" Using one MSI vector for all queues\n"));
adaptExt->msix_one_vector = TRUE;
}
if (!InitializeVirtualQueues(adaptExt))
{
LogError(DeviceExtension, SP_INTERNAL_ADAPTER_ERROR, __LINE__);
RhelDbgPrint(TRACE_LEVEL_FATAL, (" Cannot find snd virtual queue\n"));
virtio_add_status(&adaptExt->vdev, VIRTIO_CONFIG_S_FAILED);
return ret;
}
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;
StorPortMoveMemory(&adaptExt->inquiry_data.VendorId, "Red Hat ", sizeof("Red Hat "));
StorPortMoveMemory(&adaptExt->inquiry_data.ProductId, "VirtIO", sizeof("VirtIO"));
StorPortMoveMemory(&adaptExt->inquiry_data.ProductRevisionLevel, "0001", sizeof("0001"));
StorPortMoveMemory(&adaptExt->inquiry_data.VendorSpecific, "0001", sizeof("0001"));
ret = TRUE;
if (!adaptExt->dump_mode)
{
if ((adaptExt->num_queues > 1) && (adaptExt->perfFlags == 0))
{
perfData.Version = STOR_PERF_VERSION;
perfData.Size = sizeof(PERF_CONFIGURATION_DATA);
status = StorPortInitializePerfOpts(DeviceExtension, TRUE, &perfData);
RhelDbgPrint(TRACE_LEVEL_VERBOSE,
" Perf Version = 0x%x, Flags = 0x%x, ConcurrentChannels = %d, FirstRedirectionMessageNumber = "
"%d,LastRedirectionMessageNumber = %d\n",
perfData.Version,
perfData.Flags,
perfData.ConcurrentChannels,
perfData.FirstRedirectionMessageNumber,
perfData.LastRedirectionMessageNumber);
if (status == STOR_STATUS_SUCCESS)
{
if (CHECKFLAG(perfData.Flags, STOR_PERF_DPC_REDIRECTION))
{
adaptExt->perfFlags |= STOR_PERF_DPC_REDIRECTION;
}
if (CHECKFLAG(perfData.Flags, STOR_PERF_INTERRUPT_MESSAGE_RANGES))
{
adaptExt->perfFlags |= STOR_PERF_INTERRUPT_MESSAGE_RANGES;
perfData.FirstRedirectionMessageNumber = 1;
perfData.LastRedirectionMessageNumber = perfData.FirstRedirectionMessageNumber +
adaptExt->num_queues - 1;
ASSERT(perfData.lastRedirectionMessageNumber < adaptExt->num_affinity);
}
if (CHECKFLAG(perfData.Flags, STOR_PERF_CONCURRENT_CHANNELS))
{
adaptExt->perfFlags |= STOR_PERF_CONCURRENT_CHANNELS;
perfData.ConcurrentChannels = adaptExt->num_queues;
}
if ((adaptExt->pmsg_affinity != NULL) && CHECKFLAG(perfData.Flags, STOR_PERF_ADV_CONFIG_LOCALITY))
{
RtlZeroMemory((PCHAR)adaptExt->pmsg_affinity,
sizeof(GROUP_AFFINITY) * ((ULONGLONG)adaptExt->num_queues + 1));
adaptExt->perfFlags |= STOR_PERF_ADV_CONFIG_LOCALITY;
perfData.MessageTargets = adaptExt->pmsg_affinity;
}
if (CHECKFLAG(perfData.Flags, STOR_PERF_OPTIMIZE_FOR_COMPLETION_DURING_STARTIO))
{
adaptExt->perfFlags |= STOR_PERF_OPTIMIZE_FOR_COMPLETION_DURING_STARTIO;
}
if (CHECKFLAG(perfData.Flags, STOR_PERF_NO_SGL))
{
adaptExt->perfFlags |= STOR_PERF_NO_SGL;
}
perfData.Flags = adaptExt->perfFlags;
RhelDbgPrint(TRACE_LEVEL_VERBOSE,
" Perf Version = 0x%x, Flags = 0x%x, ConcurrentChannels = %d, "
"FirstRedirectionMessageNumber = %d,LastRedirectionMessageNumber = %d\n",
perfData.Version,
perfData.Flags,
perfData.ConcurrentChannels,
perfData.FirstRedirectionMessageNumber,
perfData.LastRedirectionMessageNumber);
status = StorPortInitializePerfOpts(DeviceExtension, FALSE, &perfData);
if (status != STOR_STATUS_SUCCESS)
{
adaptExt->perfFlags = 0;
RhelDbgPrint(TRACE_LEVEL_ERROR, " StorPortInitializePerfOpts FALSE status = 0x%x\n", status);
}
}
else
{
RhelDbgPrint(TRACE_LEVEL_INFORMATION, " StorPortInitializePerfOpts TRUE status = 0x%x\n", status);
}
}
}
if (!adaptExt->dump_mode)
{
if (adaptExt->dpc == NULL)
{
adaptExt->dpc = (PSTOR_DPC)VioStorPoolAlloc(DeviceExtension, sizeof(STOR_DPC) * adaptExt->num_queues);
}
if ((adaptExt->dpc != NULL) && (adaptExt->dpc_ok == FALSE))
{
ret = StorPortEnablePassiveInitialization(DeviceExtension, VirtIoPassiveInitializeRoutine);
}
}
if (ret)
{
virtio_device_ready(&adaptExt->vdev);
}
else
{
virtio_add_status(&adaptExt->vdev, VIRTIO_CONFIG_S_FAILED);
}
for (ULONG index = 0; index < adaptExt->num_queues; ++index)
{
element = &adaptExt->processing_srbs[index];
InitializeListHead(&element->srb_list);
element->srb_cnt = 0;
}
return ret;
}
VOID CompletePendingRequests(IN PVOID DeviceExtension)
{
PADAPTER_EXTENSION adaptExt;
adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
#ifdef DBG
RhelDbgPrint(TRACE_LEVEL_INFORMATION, "CompletePendingRequests %d %d\n", adaptExt->srb_cnt, adaptExt->inqueue_cnt);
#endif
if (!adaptExt->reset_in_progress)
{
adaptExt->reset_in_progress = TRUE;
StorPortPause(DeviceExtension, 10);
for (ULONG index = 0; index < adaptExt->num_queues; index++)
{
PREQUEST_LIST element = &adaptExt->processing_srbs[index];
STOR_LOCK_HANDLE LockHandle = {0};
ULONG MessageID = index + 1;
VioStorVQLock(DeviceExtension, MessageID, &LockHandle, FALSE);
while (!IsListEmpty(&element->srb_list))
{
PLIST_ENTRY entry = RemoveHeadList(&element->srb_list);
if (entry)
{
pblk_req req = CONTAINING_RECORD(entry, blk_req, list_entry);
PSCSI_REQUEST_BLOCK currSrb = (PSCSI_REQUEST_BLOCK)req->req;
PSRB_EXTENSION currSrbExt = SRB_EXTENSION(currSrb);
if (currSrb)
{
CompleteRequestWithStatus(DeviceExtension, (PSRB_TYPE)currSrb, SRB_STATUS_BUS_RESET);
element->srb_cnt--;
}
}
}
if (element->srb_cnt)
{
element->srb_cnt = 0;
}
VioStorVQUnlock(DeviceExtension, MessageID, &LockHandle, FALSE);
}
StorPortResume(DeviceExtension);
}
else
{
RhelDbgPrint(TRACE_LEVEL_ERROR, "RESET IN THE PROGRESS !!!!\n");
}
adaptExt->reset_in_progress = FALSE;
}
BOOLEAN
VirtIoStartIo(IN PVOID DeviceExtension, IN PSCSI_REQUEST_BLOCK Srb)
{
PCDB cdb = SRB_CDB(Srb);
PADAPTER_EXTENSION adaptExt;
UCHAR ScsiStatus = SCSISTAT_GOOD;
adaptExt = (PADAPTER_EXTENSION)DeviceExtension;
SRB_SET_SCSI_STATUS(((PSRB_TYPE)Srb), ScsiStatus);
RhelDbgPrint(TRACE_LEVEL_VERBOSE, " Srb = 0x%p\n", Srb);
switch (SRB_FUNCTION(Srb))
{
case SRB_FUNCTION_EXECUTE_SCSI:
{
break;
}
case SRB_FUNCTION_IO_CONTROL:
{
PVOID srbDataBuffer = SRB_DATA_BUFFER(Srb);
PSRB_IO_CONTROL srbControl = (PSRB_IO_CONTROL)srbDataBuffer;
UCHAR srbStatus = SRB_STATUS_INVALID_REQUEST;
switch (srbControl->ControlCode)
{
case IOCTL_SCSI_MINIPORT_FIRMWARE:
srbStatus = FirmwareRequest(DeviceExtension, (PSRB_TYPE)Srb);
RhelDbgPrint(TRACE_LEVEL_INFORMATION, " <--> IOCTL_SCSI_MINIPORT_FIRMWARE\n");
break;
default:
RhelDbgPrint(TRACE_LEVEL_INFORMATION,
" <--> Unsupport control code 0x%x\n",
srbControl->ControlCode);
break;
}
CompleteRequestWithStatus(DeviceExtension, (PSRB_TYPE)Srb, srbStatus);
return TRUE;
}
case SRB_FUNCTION_PNP:
{
UCHAR SrbStatus = SRB_STATUS_SUCCESS;
ULONG SrbPnPFlags;
ULONG PnPAction;
SRB_GET_PNP_INFO(Srb, SrbPnPFlags, PnPAction);
RhelDbgPrint(TRACE_LEVEL_INFORMATION, " SrbPnPFlags = %d, PnPAction = %d\n", SrbPnPFlags, PnPAction);
switch (PnPAction)
{
case StorQueryCapabilities:
if (CHECKFLAG(SrbPnPFlags, SRB_PNP_FLAGS_ADAPTER_REQUEST) &&
(SRB_DATA_TRANSFER_LENGTH(Srb) >= sizeof(STOR_DEVICE_CAPABILITIES)))
{
PSTOR_DEVICE_CAPABILITIES storCapabilities = (PSTOR_DEVICE_CAPABILITIES)SRB_DATA_BUFFER(Srb);
RtlZeroMemory(storCapabilities, sizeof(*storCapabilities));
storCapabilities->Removable = 1;
}
break;
case StorRemoveDevice:
case StorSurpriseRemoval:
adaptExt->removed = TRUE;
DeviceChangeNotification(DeviceExtension, FALSE);
break;
case StorStopDevice:
adaptExt->stopped = TRUE;
break;
default:
RhelDbgPrint(TRACE_LEVEL_INFORMATION,
" Unsupported PnPAction SrbPnPFlags = %d, PnPAction = %d\n",
SrbPnPFlags,
PnPAction);
SrbStatus = SRB_STATUS_INVALID_REQUEST;
}
CompleteRequestWithStatus(DeviceExtension, (PSRB_TYPE)Srb, SrbStatus);
return TRUE;
}
case SRB_FUNCTION_POWER:
CompleteRequestWithStatus(DeviceExtension, (PSRB_TYPE)Srb, SRB_STATUS_SUCCESS);
return TRUE;
case SRB_FUNCTION_RESET_BUS:
case SRB_FUNCTION_RESET_DEVICE:
case SRB_FUNCTION_RESET_LOGICAL_UNIT:
{
CompletePendingRequests(DeviceExtension);
CompleteRequestWithStatus(DeviceExtension, (PSRB_TYPE)Srb, SRB_STATUS_SUCCESS);
#ifdef DBG
RhelDbgPrint(TRACE_LEVEL_INFORMATION,
" RESET (%p) Function %x Cnt %d InQueue %d\n",
Srb,
SRB_FUNCTION(Srb),
adaptExt->srb_cnt,
adaptExt->inqueue_cnt);
for (USHORT i = 0; i < adaptExt->num_queues; i++)
{
if (adaptExt->vq[i])
{
RhelDbgPrint(TRACE_LEVEL_ERROR, "%d indx %d\n", i, adaptExt->vq[i]->index);
}
}
#endif
return TRUE;
}
case SRB_FUNCTION_FLUSH:
case SRB_FUNCTION_SHUTDOWN:
{
SRB_SET_SRB_STATUS(Srb, SRB_STATUS_PENDING);
if (!RhelDoFlush(DeviceExtension, (PSRB_TYPE)Srb, FALSE, FALSE))
{
CompleteRequestWithStatus(DeviceExtension, (PSRB_TYPE)Srb, SRB_STATUS_ERROR);
}