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Detect and print BIOS disk geometry.

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svn path=/trunk/; revision=4602
This commit is contained in:
Eric Kohl 2003-04-27 18:10:38 +00:00
parent 0f71890bc8
commit 392883e81f
1 changed files with 121 additions and 3 deletions
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124
reactos/drivers/storage/disk/disk.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: disk.c,v 1.25 2003/04/27 10:50:07 ekohl Exp $
/* $Id: disk.c,v 1.26 2003/04/27 18:10:38 ekohl Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -87,6 +87,9 @@ static VOID
DiskClassUpdatePartitionDeviceObjects (IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp);
static VOID
ScsiDiskUpdateFixedDiskGeometry(IN PDEVICE_EXTENSION DeviceExtension);
/* FUNCTIONS ****************************************************************/
@ -628,6 +631,8 @@ DiskClassCreateDeviceObject(IN PDRIVER_OBJECT DriverObject,
DPRINT(" Number of partitions: %u\n", PartitionList->PartitionCount);
ScsiDiskUpdateFixedDiskGeometry(DiskDeviceExtension);
for (PartitionNumber = 0; PartitionNumber < PartitionList->PartitionCount; PartitionNumber++)
{
PartitionEntry = &PartitionList->PartitionEntry[PartitionNumber];
@ -1086,8 +1091,8 @@ DiskClassShutdownFlush(IN PDEVICE_OBJECT DeviceObject,
*/
static VOID
DiskClassUpdatePartitionDeviceObjects (IN PDEVICE_OBJECT DiskDeviceObject,
IN PIRP Irp)
DiskClassUpdatePartitionDeviceObjects(IN PDEVICE_OBJECT DiskDeviceObject,
IN PIRP Irp)
{
PDRIVE_LAYOUT_INFORMATION PartitionList;
PPARTITION_INFORMATION PartitionEntry;
@ -1105,6 +1110,8 @@ DiskClassUpdatePartitionDeviceObjects (IN PDEVICE_OBJECT DiskDeviceObject,
PDEVICE_OBJECT DeviceObject;
NTSTATUS Status;
DPRINT("ScsiDiskUpdatePartitionDeviceObjects() called\n");
/* Get partition list */
PartitionList = Irp->AssociatedIrp.SystemBuffer;
@ -1311,6 +1318,117 @@ DiskClassUpdatePartitionDeviceObjects (IN PDEVICE_OBJECT DiskDeviceObject,
DiskData->PartitionOrdinal,
DiskData->PartitionNumber);
}
DPRINT("ScsiDiskUpdatePartitionDeviceObjects() done\n");
}
/**********************************************************************
* NAME INTERNAL
* DiskClassUpdateFixedDiskGeometry
*
* DESCRIPTION
* Updated the geometry of a disk if the disk can be accessed
* by the BIOS.
*
* RUN LEVEL
* PASSIVE_LEVEL
*
* ARGUMENTS
* DeviceExtension
* Disk device extension.
*
* RETURN VALUE
* None
*/
static VOID
ScsiDiskUpdateFixedDiskGeometry(IN PDEVICE_EXTENSION DeviceExtension)
{
PCM_FULL_RESOURCE_DESCRIPTOR ResourceDescriptor;
PCM_INT13_DRIVE_PARAMETER DriveParameters;
PKEY_VALUE_FULL_INFORMATION ValueBuffer;
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING KeyName;
UNICODE_STRING ValueName;
HANDLE SystemKey;
ULONG Length;
ULONG i;
NTSTATUS Status;
DPRINT1("ScsiDiskUpdateFixedDiskGeometry() called\n");
RtlInitUnicodeString(&KeyName,
L"\\Registry\\Machine\\Hardware\\Description\\System");
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
/* Open the adapter key */
Status = ZwOpenKey(&SystemKey,
KEY_READ,
&ObjectAttributes);
if (!NT_SUCCESS(Status))
{
DPRINT1("ZwOpenKey() failed (Status %lx)\n", Status);
return;
}
/* Allocate value buffer */
ValueBuffer = ExAllocatePool(PagedPool,
1024);
if (ValueBuffer == NULL)
{
DPRINT1("Failed to allocate value buffer\n");
ZwClose(SystemKey);
return;
}
RtlInitUnicodeString(&ValueName,
L"Configuration Data");
/* Query 'Configuration Data' value */
Status = ZwQueryValueKey(SystemKey,
&ValueName,
KeyValueFullInformation,
ValueBuffer,
1024,
&Length);
if (!NT_SUCCESS(Status))
{
DPRINT1("ZwQueryValueKey() failed (Status %lx)\n", Status);
ExFreePool(ValueBuffer);
ZwClose(SystemKey);
return;
}
ZwClose(SystemKey);
ResourceDescriptor = (PCM_FULL_RESOURCE_DESCRIPTOR)
((PUCHAR)ValueBuffer + ValueBuffer->DataOffset);
DriveParameters = (PCM_INT13_DRIVE_PARAMETER)
((PUCHAR)ResourceDescriptor + sizeof(CM_FULL_RESOURCE_DESCRIPTOR));
for (i = 0; i< DriveParameters[0].NumberDrives; i++)
{
DPRINT1("Drive %lu: %lu Cylinders %hu Heads %hu Sectors\n",
i,
DriveParameters[i].MaxCylinders,
DriveParameters[i].MaxHeads,
DriveParameters[i].SectorsPerTrack);
}
DPRINT1("*** System stopped ***\n");
for(;;);
ExFreePool(ValueBuffer);
DPRINT1("ScsiDiskUpdateFixedDiskGeometry() done\n");
}
/* EOF */