Sample Code
Windows Driver Samples/ CDROM Storage Class Driver/ C++/ src/ mmc.h/
/*++ Copyright (C) Microsoft Corporation. All rights reserved. Module Name: mmc.h Abstract: Functions for MMC area. Author: Environment: kernel mode only Notes: Revision History: --*/ #ifndef __MMC_H__ #define __MMC_H__ _IRQL_requires_max_(APC_LEVEL) VOID DeviceDeallocateMmcResources( _In_ WDFDEVICE Device ); _IRQL_requires_max_(PASSIVE_LEVEL) NTSTATUS DeviceAllocateMmcResources( _In_ WDFDEVICE Device ); _IRQL_requires_max_(PASSIVE_LEVEL) NTSTATUS DeviceUpdateMmcCapabilities( _In_ WDFDEVICE Device ); _IRQL_requires_max_(PASSIVE_LEVEL) NTSTATUS DeviceGetConfigurationWithAlloc( _In_ WDFDEVICE Device, _Outptr_result_bytebuffer_all_(*BytesReturned) PGET_CONFIGURATION_HEADER * Buffer, _Out_ PULONG BytesReturned, FEATURE_NUMBER const StartingFeature, ULONG const RequestedType ); _IRQL_requires_max_(PASSIVE_LEVEL) NTSTATUS DeviceGetConfiguration( _In_ WDFDEVICE Device, _Out_writes_bytes_to_(BufferSize, *ValidBytes) PGET_CONFIGURATION_HEADER Buffer, _In_ ULONG const BufferSize, _Out_ PULONG ValidBytes, _In_ FEATURE_NUMBER const StartingFeature, _In_ ULONG const RequestedType ); _IRQL_requires_max_(APC_LEVEL) VOID DeviceUpdateMmcWriteCapability( _In_reads_bytes_(BufferSize) PGET_CONFIGURATION_HEADER Buffer, ULONG const BufferSize, BOOLEAN const CurrentOnly, // TRUE == can drive write now, FALSE == can drive ever write _Out_ PBOOLEAN Writable, _Out_ PFEATURE_NUMBER ValidationSchema, _Out_ PULONG BlockingFactor ); _IRQL_requires_max_(APC_LEVEL) PVOID MmcDataFindFeaturePage( _In_reads_bytes_(Length) PGET_CONFIGURATION_HEADER FeatureBuffer, ULONG const Length, FEATURE_NUMBER const Feature ); _IRQL_requires_max_(APC_LEVEL) VOID MmcDataFindProfileInProfiles( _In_ FEATURE_DATA_PROFILE_LIST const* ProfileHeader, _In_ FEATURE_PROFILE_TYPE const ProfileToFind, _In_ BOOLEAN const CurrentOnly, _Out_ PBOOLEAN Found ); _IRQL_requires_max_(APC_LEVEL) _Ret_range_(-1,MAXIMUM_RETRY_FOR_SINGLE_IO_IN_100NS_UNITS) LONGLONG DeviceRetryTimeGuessBasedOnProfile( FEATURE_PROFILE_TYPE const Profile ); _IRQL_requires_max_(APC_LEVEL) _Ret_range_(-1,MAXIMUM_RETRY_FOR_SINGLE_IO_IN_100NS_UNITS) LONGLONG DeviceRetryTimeDetectionBasedOnModePage2A( _In_ PCDROM_DEVICE_EXTENSION DeviceExtension ); _IRQL_requires_max_(APC_LEVEL) _Ret_range_(-1,MAXIMUM_RETRY_FOR_SINGLE_IO_IN_100NS_UNITS) LONGLONG DeviceRetryTimeDetectionBasedOnGetPerformance( _In_ PCDROM_DEVICE_EXTENSION DeviceExtension, _In_ BOOLEAN UseLegacyNominalPerformance ); #endif // __MMC_H__
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