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Windows: Implement TRIM support for non-system SSD partitions/drives and add driver option to enable it (TRIM is disabled by default for non-system SSD partitions/drives)

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This commit is contained in:
Mounir IDRASSI
2018-03-04 18:48:16 +01:00
parent 5065116e56
commit cd59d5364f
8 changed files with 341 additions and 43 deletions
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28
src/Driver/Ntvol.c
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@@ -68,6 +68,10 @@ NTSTATUS TCOpenVolume (PDEVICE_OBJECT DeviceObject,
Extension->HostMaximumPhysicalPages = 17;
Extension->HostAlignmentMask = 0;
/* default values for non-SSD drives */
Extension->IncursSeekPenalty = TRUE;
Extension->TrimEnabled = FALSE;
RtlInitUnicodeString (&FullFileName, pwszMountVolume);
InitializeObjectAttributes (&oaFileAttributes, &FullFileName, OBJ_CASE_INSENSITIVE | (forceAccessCheck ? OBJ_FORCE_ACCESS_CHECK : 0) | OBJ_KERNEL_HANDLE, NULL, NULL);
KeInitializeEvent (&Extension->keVolumeEvent, NotificationEvent, FALSE);
@@ -152,6 +156,8 @@ NTSTATUS TCOpenVolume (PDEVICE_OBJECT DeviceObject,
{
STORAGE_ACCESS_ALIGNMENT_DESCRIPTOR alignmentDesc = {0};
STORAGE_ADAPTER_DESCRIPTOR adapterDesc = {0};
DEVICE_SEEK_PENALTY_DESCRIPTOR penaltyDesc = {0};
DEVICE_TRIM_DESCRIPTOR trimDesc = {0};
storagePropertyQuery.PropertyId = StorageAccessAlignmentProperty;
storagePropertyQuery.QueryType = PropertyStandardQuery;
@@ -178,6 +184,28 @@ NTSTATUS TCOpenVolume (PDEVICE_OBJECT DeviceObject,
Extension->HostMaximumPhysicalPages = adapterDesc.MaximumPhysicalPages;
Extension->HostAlignmentMask = adapterDesc.AlignmentMask;
}
storagePropertyQuery.PropertyId = StorageDeviceSeekPenaltyProperty;
penaltyDesc.Version = sizeof (DEVICE_SEEK_PENALTY_DESCRIPTOR);
penaltyDesc.Size = sizeof (DEVICE_SEEK_PENALTY_DESCRIPTOR);
if (NT_SUCCESS (TCSendHostDeviceIoControlRequestEx (DeviceObject, Extension, IOCTL_STORAGE_QUERY_PROPERTY,
(char*) &storagePropertyQuery, sizeof(storagePropertyQuery),
(char *) &penaltyDesc, sizeof (penaltyDesc))))
{
Extension->IncursSeekPenalty = penaltyDesc.IncursSeekPenalty;
}
storagePropertyQuery.PropertyId = StorageDeviceTrimProperty;
trimDesc.Version = sizeof (DEVICE_TRIM_DESCRIPTOR);
trimDesc.Size = sizeof (DEVICE_TRIM_DESCRIPTOR);
if (NT_SUCCESS (TCSendHostDeviceIoControlRequestEx (DeviceObject, Extension, IOCTL_STORAGE_QUERY_PROPERTY,
(char*) &storagePropertyQuery, sizeof(storagePropertyQuery),
(char *) &trimDesc, sizeof (trimDesc))))
{
Extension->TrimEnabled = trimDesc.TrimEnabled;
}
}
// Drive geometry is used only when IOCTL_DISK_GET_PARTITION_INFO fails