699 lines
18 KiB
C
699 lines
18 KiB
C
/*++
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Copyright (C) Microsoft Corporation, 1990 - 1998
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Module Name:
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prop.c
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Abstract:
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This is the NT SCSI port driver. This module contains code relating to
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property queries
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Environment:
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kernel mode only
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Notes:
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Revision History:
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--*/
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#include "port.h"
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NTSTATUS
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iSpBuildDeviceDescriptor(
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IN PISCSI_PDO_EXTENSION LogicalUnit,
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IN PSTORAGE_DEVICE_DESCRIPTOR Descriptor,
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IN OUT PULONG DescriptorLength
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);
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NTSTATUS
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iSpBuildDeviceIdDescriptor(
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IN PISCSI_PDO_EXTENSION LogicalUnit,
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IN PSTORAGE_DEVICE_ID_DESCRIPTOR Descriptor,
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IN OUT PULONG DescriptorLength
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);
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NTSTATUS
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iSpBuildAdapterDescriptor(
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IN PISCSI_FDO_EXTENSION FdoExtension,
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IN PSTORAGE_ADAPTER_DESCRIPTOR Descriptor,
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IN OUT PULONG DescriptorLength
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);
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, iSpBuildDeviceDescriptor)
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#pragma alloc_text(PAGE, iSpBuildDeviceIdDescriptor)
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#pragma alloc_text(PAGE, iSpBuildAdapterDescriptor)
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#pragma alloc_text(PAGE, iScsiPortQueryProperty)
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#pragma alloc_text(PAGE, iSpQueryDeviceText)
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#endif
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NTSTATUS
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iScsiPortQueryProperty(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP QueryIrp
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)
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{
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PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation(QueryIrp);
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PCOMMON_EXTENSION commonExtension = DeviceObject->DeviceExtension;
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PSTORAGE_PROPERTY_QUERY query = QueryIrp->AssociatedIrp.SystemBuffer;
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ULONG queryLength = irpStack->Parameters.DeviceIoControl.OutputBufferLength;
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NTSTATUS status;
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PAGED_CODE();
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//
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// We don't actually support mask queries.
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//
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if(query->QueryType >= PropertyMaskQuery) {
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status = STATUS_INVALID_PARAMETER_1;
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QueryIrp->IoStatus.Status = status;
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QueryIrp->IoStatus.Information = 0;
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iSpReleaseRemoveLock(DeviceObject, QueryIrp);
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IoCompleteRequest(QueryIrp, IO_NO_INCREMENT);
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return status;
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}
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switch(query->PropertyId) {
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case StorageDeviceProperty: {
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//
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// Make sure this is a target device.
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//
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if(!commonExtension->IsPdo) {
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status = STATUS_INVALID_DEVICE_REQUEST;
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break;
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}
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if(query->QueryType == PropertyExistsQuery) {
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status = STATUS_SUCCESS;
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} else {
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status = iSpBuildDeviceDescriptor(
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(PISCSI_PDO_EXTENSION) commonExtension,
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QueryIrp->AssociatedIrp.SystemBuffer,
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&queryLength);
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QueryIrp->IoStatus.Information = queryLength;
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}
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break;
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}
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case StorageAdapterProperty: {
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PDEVICE_OBJECT adapterObject = DeviceObject;
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//
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// if this is a target device then forward it down to the
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// underlying device object. This lets filters do their magic
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//
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if(commonExtension->IsPdo) {
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//
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// Call the lower device
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//
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IoSkipCurrentIrpStackLocation(QueryIrp);
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iSpReleaseRemoveLock(DeviceObject, QueryIrp);
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status = IoCallDriver(commonExtension->LowerDeviceObject, QueryIrp);
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return status;
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}
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if(query->QueryType == PropertyExistsQuery) {
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status = STATUS_SUCCESS;
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} else {
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status = iSpBuildAdapterDescriptor(
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(PISCSI_FDO_EXTENSION) commonExtension,
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QueryIrp->AssociatedIrp.SystemBuffer,
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&queryLength);
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QueryIrp->IoStatus.Information = queryLength;
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}
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break;
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}
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case StorageDeviceIdProperty: {
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PISCSI_PDO_EXTENSION logicalUnit;
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//
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// Make sure this is a target device.
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//
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if(!commonExtension->IsPdo) {
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status = STATUS_INVALID_DEVICE_REQUEST;
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break;
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}
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logicalUnit = DeviceObject->DeviceExtension;
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//
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// Check to see if we have a device identifier page. If not then
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// fail any calls for this type of identifier.
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//
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if(logicalUnit->DeviceIdentifierPage != NULL) {
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if(query->QueryType == PropertyExistsQuery) {
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status = STATUS_SUCCESS;
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} else {
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status = iSpBuildDeviceIdDescriptor(
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logicalUnit,
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QueryIrp->AssociatedIrp.SystemBuffer,
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&queryLength);
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QueryIrp->IoStatus.Information = queryLength;
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}
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} else {
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status = STATUS_NOT_SUPPORTED;
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}
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break;
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}
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default: {
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//
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// If this is a target device then some filter beneath us may
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// handle this property.
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//
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if(commonExtension->IsPdo) {
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//
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// Call the lower device.
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//
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IoSkipCurrentIrpStackLocation(QueryIrp);
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iSpReleaseRemoveLock(DeviceObject, QueryIrp);
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status = IoCallDriver(commonExtension->LowerDeviceObject, QueryIrp);
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return status;
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}
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//
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// Nope, this property really doesn't exist
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//
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status = STATUS_INVALID_PARAMETER_1;
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QueryIrp->IoStatus.Information = 0;
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break;
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}
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}
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if(status != STATUS_PENDING) {
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QueryIrp->IoStatus.Status = status;
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iSpReleaseRemoveLock(DeviceObject, QueryIrp);
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IoCompleteRequest(QueryIrp, IO_DISK_INCREMENT);
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}
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return status;
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}
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NTSTATUS
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iSpBuildDeviceDescriptor(
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IN PISCSI_PDO_EXTENSION LogicalUnit,
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IN PSTORAGE_DEVICE_DESCRIPTOR Descriptor,
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IN OUT PULONG DescriptorLength
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)
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/*++
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Routine Description:
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This routine will create a device descriptor based on the information in
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it's device extension. It will copy as much data as possible into
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the Descriptor and will update the DescriptorLength to indicate the
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number of bytes copied
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Arguments:
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DeviceObject - a pointer to the PDO we are building a descriptor for
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Descriptor - a buffer to store the descriptor in
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DescriptorLength - the length of the buffer and the number of bytes
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returned
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QueryIrp - unused
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Return Value:
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status
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--*/
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{
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PISCSIPORT_DRIVER_EXTENSION driverExtension =
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IoGetDriverObjectExtension(LogicalUnit->DeviceObject->DriverObject,
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(PVOID)ISCSI_TAG_DRIVER_EXTENSION);
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LONG maxLength = *DescriptorLength;
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LONG bytesRemaining = maxLength;
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LONG realLength = sizeof(STORAGE_DEVICE_DESCRIPTOR);
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PUCHAR currentOffset = (PUCHAR) Descriptor;
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LONG inquiryLength;
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PINQUIRYDATA inquiryData = &(LogicalUnit->InquiryData);
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STORAGE_DEVICE_DESCRIPTOR tmp;
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PAGED_CODE();
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ASSERT(Descriptor != NULL);
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//
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// Figure out what the total size of this structure is going to be
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//
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inquiryLength = 4 + inquiryData->AdditionalLength;
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if(inquiryLength > INQUIRYDATABUFFERSIZE) {
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inquiryLength = INQUIRYDATABUFFERSIZE;
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}
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realLength += inquiryLength + 31; // 31 = length of the 3 id strings +
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// 3 nuls
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//
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// Zero the buffer provided.
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//
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RtlZeroMemory(Descriptor, *DescriptorLength);
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//
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// Build the device descriptor structure on the stack then copy as much as
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// can be copied over
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//
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RtlZeroMemory(&tmp, sizeof(STORAGE_DEVICE_DESCRIPTOR));
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tmp.Version = sizeof(STORAGE_DEVICE_DESCRIPTOR);
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tmp.Size = realLength;
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tmp.DeviceType = inquiryData->DeviceType;
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tmp.DeviceTypeModifier = inquiryData->DeviceTypeModifier;
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tmp.RemovableMedia = inquiryData->RemovableMedia;
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tmp.CommandQueueing = inquiryData->CommandQueue;
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tmp.SerialNumberOffset = 0xffffffff;
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tmp.BusType = driverExtension->BusType;
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RtlCopyMemory(currentOffset,
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&tmp,
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min(sizeof(STORAGE_DEVICE_DESCRIPTOR), bytesRemaining));
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bytesRemaining -= sizeof(STORAGE_DEVICE_DESCRIPTOR);
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if(bytesRemaining <= 0) {
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*DescriptorLength = maxLength;
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return STATUS_SUCCESS;
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}
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currentOffset = ((PUCHAR) Descriptor) + (maxLength - bytesRemaining);
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//
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// Copy over as much inquiry data as we can and update the raw byte count
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//
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RtlCopyMemory(currentOffset, inquiryData, min(inquiryLength, bytesRemaining));
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bytesRemaining -= inquiryLength;
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if(bytesRemaining <= 0) {
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*DescriptorLength = maxLength;
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Descriptor->RawPropertiesLength = maxLength -
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sizeof(STORAGE_DEVICE_DESCRIPTOR);
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return STATUS_SUCCESS;
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}
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Descriptor->RawPropertiesLength = inquiryLength;
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currentOffset = ((PUCHAR) Descriptor) + (maxLength - bytesRemaining);
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//
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// Now we need to start copying inquiry strings
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//
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//
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// first the vendor id
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//
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RtlCopyMemory(currentOffset,
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inquiryData->VendorId,
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min(bytesRemaining, sizeof(UCHAR) * 8));
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bytesRemaining -= sizeof(UCHAR) * 9; // include trailing null
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if(bytesRemaining >= 0) {
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Descriptor->VendorIdOffset = (ULONG)((ULONG_PTR) currentOffset -
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(ULONG_PTR) Descriptor);
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}
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if(bytesRemaining <= 0) {
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*DescriptorLength = maxLength;
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return STATUS_SUCCESS;
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}
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currentOffset = ((PUCHAR) Descriptor) + (maxLength - bytesRemaining);
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//
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// now the product id
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//
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RtlCopyMemory(currentOffset,
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inquiryData->ProductId,
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min(bytesRemaining, 16));
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bytesRemaining -= 17; // include trailing null
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if(bytesRemaining >= 0) {
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Descriptor->ProductIdOffset = (ULONG)((ULONG_PTR) currentOffset -
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(ULONG_PTR) Descriptor);
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}
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if(bytesRemaining <= 0) {
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*DescriptorLength = maxLength;
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return STATUS_SUCCESS;
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}
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currentOffset = ((PUCHAR) Descriptor) + (maxLength - bytesRemaining);
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//
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// And the product revision
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//
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RtlCopyMemory(currentOffset,
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inquiryData->ProductRevisionLevel,
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min(bytesRemaining, 4));
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bytesRemaining -= 5;
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if(bytesRemaining >= 0) {
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Descriptor->ProductRevisionOffset = (ULONG)((ULONG_PTR) currentOffset -
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(ULONG_PTR) Descriptor);
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}
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if(bytesRemaining <= 0) {
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*DescriptorLength = maxLength;
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return STATUS_SUCCESS;
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}
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*DescriptorLength = maxLength - bytesRemaining;
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return STATUS_SUCCESS;
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}
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NTSTATUS
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iSpBuildAdapterDescriptor(
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IN PISCSI_FDO_EXTENSION Adapter,
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IN PSTORAGE_ADAPTER_DESCRIPTOR Descriptor,
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IN OUT PULONG DescriptorLength
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)
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{
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PISCSIPORT_DRIVER_EXTENSION driverExtension =
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IoGetDriverObjectExtension(Adapter->DeviceObject->DriverObject,
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(PVOID)ISCSI_TAG_DRIVER_EXTENSION);
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PIO_SCSI_CAPABILITIES capabilities = &(Adapter->IoScsiCapabilities);
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STORAGE_ADAPTER_DESCRIPTOR tmp;
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PAGED_CODE();
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//
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// Call to IoGetDriverObjectExtension can return NULL
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//
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if (driverExtension == NULL) {
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*DescriptorLength = 0;
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return STATUS_UNSUCCESSFUL;
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}
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tmp.Version = sizeof(STORAGE_ADAPTER_DESCRIPTOR);
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tmp.Size = sizeof(STORAGE_ADAPTER_DESCRIPTOR);
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tmp.MaximumTransferLength = capabilities->MaximumTransferLength;
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tmp.MaximumPhysicalPages = capabilities->MaximumPhysicalPages;
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tmp.AlignmentMask = capabilities->AlignmentMask;
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tmp.AdapterUsesPio = capabilities->AdapterUsesPio;
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tmp.AdapterScansDown = capabilities->AdapterScansDown;
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tmp.CommandQueueing = capabilities->TaggedQueuing;
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tmp.AcceleratedTransfer = TRUE;
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tmp.BusType = (BOOLEAN) driverExtension->BusType;
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tmp.BusMajorVersion = 2;
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tmp.BusMinorVersion = 0;
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RtlCopyMemory(Descriptor,
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&tmp,
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min(*DescriptorLength, sizeof(STORAGE_ADAPTER_DESCRIPTOR)));
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*DescriptorLength = min(*DescriptorLength, sizeof(STORAGE_ADAPTER_DESCRIPTOR));
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return STATUS_SUCCESS;
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}
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NTSTATUS
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iSpQueryDeviceText(
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IN PDEVICE_OBJECT LogicalUnit,
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IN DEVICE_TEXT_TYPE TextType,
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IN LCID LocaleId,
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IN OUT PWSTR *DeviceText
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)
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{
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PISCSI_PDO_EXTENSION pdoExtension = LogicalUnit->DeviceExtension;
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UCHAR ansiBuffer[256];
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ANSI_STRING ansiText;
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UNICODE_STRING unicodeText;
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NTSTATUS status;
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PAGED_CODE();
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RtlInitUnicodeString(&unicodeText, NULL);
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if(TextType == DeviceTextDescription) {
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PISCSI_DEVICE_TYPE deviceInfo =
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iSpGetDeviceTypeInfo(pdoExtension->InquiryData.DeviceType);
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PUCHAR c;
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LONG i;
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RtlZeroMemory(ansiBuffer, sizeof(ansiBuffer));
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RtlCopyMemory(ansiBuffer,
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pdoExtension->InquiryData.VendorId,
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sizeof(pdoExtension->InquiryData.VendorId));
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c = ansiBuffer;
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for(i = sizeof(pdoExtension->InquiryData.VendorId); i >= 0; i--) {
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if((c[i] != '\0') &&
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(c[i] != ' ')) {
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break;
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}
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c[i] = '\0';
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}
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c = &(c[i + 1]);
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sprintf(c, " ");
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c++;
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RtlCopyMemory(c,
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pdoExtension->InquiryData.ProductId,
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sizeof(pdoExtension->InquiryData.ProductId));
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for(i = sizeof(pdoExtension->InquiryData.ProductId); i >= 0; i--) {
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if((c[i] != '\0') &&
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(c[i] != ' ')) {
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break;
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}
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c[i] = '\0';
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}
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c = &(c[i + 1]);
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sprintf(c, " SCSI %s Device", deviceInfo->DeviceTypeString);
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} else if (TextType == DeviceTextLocationInformation) {
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sprintf(ansiBuffer, "Bus Number %d, Target ID %d, LUN %d",
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pdoExtension->PathId,
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pdoExtension->TargetId,
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pdoExtension->Lun);
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} else {
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return STATUS_NOT_SUPPORTED;
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}
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RtlInitAnsiString(&ansiText, ansiBuffer);
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status = RtlAnsiStringToUnicodeString(&unicodeText,
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&ansiText,
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TRUE);
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*DeviceText = unicodeText.Buffer;
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return status;
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}
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NTSTATUS
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iSpBuildDeviceIdDescriptor(
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IN PISCSI_PDO_EXTENSION LogicalUnit,
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IN PSTORAGE_DEVICE_ID_DESCRIPTOR Descriptor,
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IN OUT PULONG DescriptorLength
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)
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/*++
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Routine Description:
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This routine will create a device id descriptor based on the device
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identifier page retrieved during discovery. It is an error to call this
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routine if no device identifier page exists.
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This routine will copy as much data as possible into the Descriptor and
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will update the DescriptorLength to indicate the number of bytes copied.
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|
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Arguments:
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DeviceObject - a pointer to the PDO we are building a descriptor for
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Descriptor - a buffer to store the descriptor in
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DescriptorLength - the length of the buffer and the number of bytes
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returned
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QueryIrp - unused
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Return Value:
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status
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--*/
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{
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PVPD_IDENTIFICATION_PAGE idPage = LogicalUnit->DeviceIdentifierPage;
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ULONG idOffset;
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ULONG maxLength = *DescriptorLength;
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PUCHAR destOffset;
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LONG identifierLength;
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ULONG identifierCount = 0;
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PAGED_CODE();
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ASSERT(Descriptor != NULL);
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ASSERT(LogicalUnit->DeviceIdentifierPage != NULL);
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|
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if(maxLength < sizeof(STORAGE_DESCRIPTOR_HEADER)) {
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return STATUS_INVALID_PARAMETER;
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}
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|
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//
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// Initialize the header of the descriptor.
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//
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RtlZeroMemory(Descriptor, *DescriptorLength);
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Descriptor->Version = sizeof(STORAGE_DEVICE_ID_DESCRIPTOR);
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||
|
||
Descriptor->Size = FIELD_OFFSET(STORAGE_DEVICE_ID_DESCRIPTOR, Identifiers);
|
||
|
||
//
|
||
// Prepare to copy the identifiers directly into the buffer.
|
||
//
|
||
|
||
destOffset = Descriptor->Identifiers;
|
||
|
||
//
|
||
// Walk through the id page. Count the number of descriptors and
|
||
// calculate the size of the descriptor page.
|
||
//
|
||
|
||
for(idOffset = 0; idOffset < idPage->PageLength;) {
|
||
PVPD_IDENTIFICATION_DESCRIPTOR src;
|
||
USHORT identifierSize;
|
||
|
||
src = (PVPD_IDENTIFICATION_DESCRIPTOR) &(idPage->Descriptors[idOffset]);
|
||
|
||
identifierSize = FIELD_OFFSET(STORAGE_IDENTIFIER, Identifier);
|
||
identifierSize += src->IdentifierLength;
|
||
|
||
//
|
||
// Align the identifier size to 32-bits.
|
||
//
|
||
|
||
identifierSize += sizeof(ULONG);
|
||
identifierSize &= ~(sizeof(ULONG) - 1);
|
||
|
||
identifierCount += 1;
|
||
|
||
Descriptor->Size += identifierSize;
|
||
|
||
if(Descriptor->Size <= maxLength) {
|
||
PSTORAGE_IDENTIFIER dest;
|
||
|
||
dest = (PSTORAGE_IDENTIFIER) destOffset;
|
||
|
||
dest->CodeSet = src->CodeSet;
|
||
dest->Type = src->IdentifierType;
|
||
|
||
dest->IdentifierSize = src->IdentifierLength;
|
||
dest->NextOffset = identifierSize;
|
||
|
||
RtlCopyMemory(dest->Identifier,
|
||
src->Identifier,
|
||
src->IdentifierLength);
|
||
|
||
destOffset += dest->NextOffset;
|
||
}
|
||
|
||
idOffset += sizeof(PVPD_IDENTIFICATION_DESCRIPTOR);
|
||
idOffset += src->IdentifierLength;
|
||
}
|
||
|
||
if(*DescriptorLength >= FIELD_OFFSET(STORAGE_DEVICE_ID_DESCRIPTOR,
|
||
Identifiers)) {
|
||
|
||
Descriptor->NumberOfIdentifiers = identifierCount;
|
||
}
|
||
|
||
*DescriptorLength = min(Descriptor->Size, *DescriptorLength);
|
||
|
||
return STATUS_SUCCESS;
|
||
}
|