IODMAEventSource.h

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    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 
   37 class IODMAController;
   38 
   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);
   61   virtual IOReturn stopDMACommand(bool flush = false, uint64_t timeout = UINT64_MAX);
   62   
   63   virtual IOReturn queryDMACommand(IODMACommand **dmaCommand, IOByteCount *transferCount, bool waitForIdle = false);
   64   virtual IOByteCount getFIFODepth();
   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 */

Cache object: 4a0d803711b55624dd7fe2252b10862d

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/iokit/IOKit/IODMAEventSource.h

FreeBSD/Linux Kernel Cross Reference
sys/iokit/IOKit/IODMAEventSource.h