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Source at commit 2350 created 10 years 5 months ago. By ifabio, remove duplicated define. | |
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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 */␊ |
85 |