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73 lines
3.3 KiB
C++
73 lines
3.3 KiB
C++
/*
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* Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#ifndef _IOKIT_IODMACONTROLLER_H
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#define _IOKIT_IODMACONTROLLER_H
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#include <IOKit/IODMACommand.h>
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#include <IOKit/IODMAEventSource.h>
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#include <IOKit/IOService.h>
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class IODMAEventSource;
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class IODMAController : public IOService
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{
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OSDeclareAbstractStructors(IODMAController);
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friend class IODMAEventSource;
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private:
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IOService *_provider;
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const OSSymbol *_dmaControllerName;
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protected:
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virtual void registerDMAController(IOOptionBits options = 0);
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virtual IOReturn initDMAChannel(IOService *provider, IODMAEventSource *dmaES, UInt32 *dmaIndex, UInt32 reqIndex) = 0;
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virtual IOReturn startDMACommand(UInt32 dmaIndex, IODMACommand *dmaCommand, IODirection direction,
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IOByteCount byteCount = 0, IOByteCount byteOffset = 0) = 0;
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virtual IOReturn stopDMACommand(UInt32 dmaIndex, bool flush = false, uint64_t timeout = UINT64_MAX) = 0;
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virtual void completeDMACommand(IODMAEventSource *dmaES, IODMACommand *dmaCommand);
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virtual void notifyDMACommand(IODMAEventSource *dmaES, IODMACommand *dmaCommand, IOReturn status, IOByteCount actualByteCount, AbsoluteTime timeStamp);
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virtual IOReturn queryDMACommand(UInt32 dmaIndex, IODMACommand **dmaCommand, IOByteCount *transferCount, bool waitForIdle = false) = 0;
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virtual IOByteCount getFIFODepth(UInt32 dmaIndex, IODirection direction) = 0;
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virtual IOReturn setFIFODepth(UInt32 dmaIndex, IOByteCount depth) = 0;
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virtual IOByteCount validFIFODepth(UInt32 dmaIndex, IOByteCount depth, IODirection direction) = 0;
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virtual IOReturn setFrameSize(UInt32 dmaIndex, UInt8 byteCount) = 0;
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virtual IOReturn setDMAConfig(UInt32 dmaIndex, IOService *provider, UInt32 reqIndex) = 0;
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virtual bool validDMAConfig(UInt32 dmaIndex, IOService *provider, UInt32 reqIndex) = 0;
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public:
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static const OSSymbol *createControllerName(UInt32 phandle);
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static IODMAController *getController(IOService *provider, UInt32 dmaIndex);
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virtual bool start(IOService *provider) APPLE_KEXT_OVERRIDE;
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};
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#endif /* _IOKIT_IODMACONTROLLER_H */
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