projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 2d21ac55 A |
1 | /* |
| 2 | * Copyright (c) 2005 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * This file contains Original Code and/or Modifications of Original Code | |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 14 | * | |
| 15 | * Please obtain a copy of the License at | |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 23 | * Please see the License for the specific language governing rights and | |
| 24 | * limitations under the License. | |
| 25 | * | |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | |
| 27 | */ | |
| 28 | ||
| 29 | #ifndef _IOKIT_IODMAEVENTSOURCE_H | |
| 30 | #define _IOKIT_IODMAEVENTSOURCE_H | |
| 31 | ||
| 32 | #include <IOKit/IOService.h> | |
| 33 | #include <IOKit/IODMACommand.h> | |
| 34 | #include <IOKit/IODMAController.h> | |
| 35 | #include <IOKit/IOEventSource.h> | |
| 36 | ||
| cf7d32b8 A |
37 | class IODMAController; |
| 38 | ||
| 2d21ac55 A |
39 | class IODMAEventSource : public IOEventSource |
| 40 | { | |
| 41 | OSDeclareDefaultStructors(IODMAEventSource); | |
| 42 | ||
| 43 | friend class IODMAController; | |
| 44 | ||
| 45 | public: | |
| 46 | typedef void (*Action)(OSObject *owner, IODMAEventSource *dmaES, IODMACommand *dmaCommand, IOReturn status, IOByteCount actualByteCount); | |
| 47 | #define IODMAEventAction IODMAEventSource::Action | |
| 48 | ||
| 49 | protected: | |
| 50 | virtual void completeDMACommand(IODMACommand *dmaCommand); | |
| 51 | virtual void notifyDMACommand(IODMACommand *dmaCommand, IOReturn status, IOByteCount actualByteCount); | |
| 52 | ||
| 53 | public: | |
| 54 | static IODMAEventSource *dmaEventSource(OSObject *owner, | |
| 55 | IOService *provider, | |
| 56 | Action completion = 0, | |
| 57 | Action notification = 0, | |
| 58 | UInt32 dmaIndex = 0); | |
| 59 | ||
| 60 | virtual IOReturn startDMACommand(IODMACommand *dmaCommand, IODirection direction, IOByteCount byteCount = 0, IOByteCount byteOffset = 0); | |
| b0d623f7 | 61 | virtual IOReturn stopDMACommand(bool flush = false, uint64_t timeout = UINT64_MAX); |
| 2d21ac55 A |
62 | |
| 63 | virtual IOReturn queryDMACommand(IODMACommand **dmaCommand, IOByteCount *transferCount, bool waitForIdle = false); | |
| b0d623f7 | 64 | virtual IOByteCount getFIFODepth(); |
| 2d21ac55 A |
65 | |
| 66 | private: | |
| 67 | IOService *dmaProvider; | |
| 68 | IODMAController *dmaController; | |
| 69 | UInt32 dmaIndex; | |
| 70 | queue_head_t dmaCommandsCompleted; | |
| 71 | IOSimpleLock *dmaCommandsCompletedLock; | |
| 72 | Action dmaCompletionAction; | |
| 73 | Action dmaNotificationAction; | |
| 74 | bool dmaSynchBusy; | |
| 75 | ||
| 76 | virtual bool init(OSObject *owner, | |
| 77 | IOService *provider, | |
| 78 | Action completion = 0, | |
| 79 | Action notification = 0, | |
| 80 | UInt32 dmaIndex = 0); | |
| 81 | virtual bool checkForWork(void); | |
| 82 | }; | |
| 83 | ||
| 84 | #endif /* _IOKIT_IODMAEVENTSOURCE_H */ |