iokit/Families/IOADBBus/IOADBControllerUserClient.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1999 Apple Computer, Inc.  All rights reserved.
  24  *
  25  */
  26
  27 #include <IOKit/assert.h>
  28 #include <IOKit/IOLib.h>
  29 #include <IOKit/IOBufferMemoryDescriptor.h>
  30 #include "IOADBControllerUserClient.h"
  31
  32 #define super IOUserClient
  33
  34 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  35
  36 OSDefineMetaClassAndStructors(IOADBControllerUserClient, IOUserClient)
  37
  38 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  39
  40 IOADBControllerUserClient *IOADBControllerUserClient::withTask(task_t owningTask)
  41 {
  42     IOADBControllerUserClient * me;
  43
  44     me = new IOADBControllerUserClient;
  45     if ( me ) {
  46         if  (! me->init() ) {
  47             me->release();
  48             return NULL;
  49         }
  50         me->fTask = owningTask;
  51     }
  52     return me;
  53 }
  54
  55 bool IOADBControllerUserClient::start( IOService * provider )
  56 {
  57     assert(OSDynamicCast(IOADBController, provider));
  58     if(!super::start(provider))
  59         return false;
  60     fOwner = (IOADBController *)provider;
  61
  62     // Got the owner, so initialize the call structures
  63     fMethods[kADBReadDevice].object = provider;
  64     fMethods[kADBReadDevice].func = (IOMethod)&IOADBController::readDeviceForUser;
  65     fMethods[kADBReadDevice].count0 = 2;
  66     fMethods[kADBReadDevice].count1 = 8;
  67     fMethods[kADBReadDevice].flags = kIOUCScalarIStructO;
  68
  69     fMethods[kADBWriteDevice].object = provider;
  70     fMethods[kADBWriteDevice].func = (IOMethod)&IOADBController::writeDeviceForUser;
  71     fMethods[kADBWriteDevice].count0 = 4;
  72     fMethods[kADBWriteDevice].count1 = 0;
  73     fMethods[kADBWriteDevice].flags = kIOUCScalarIScalarO;
  74
  75     fMethods[kADBClaimDevice].object = provider;
  76     fMethods[kADBClaimDevice].func = (IOMethod)&IOADBController::claimDevice;
  77     fMethods[kADBClaimDevice].count0 = 1;
  78     fMethods[kADBClaimDevice].count1 = 0;
  79     fMethods[kADBClaimDevice].flags = kIOUCScalarIScalarO;
  80
  81     fMethods[kADBReleaseDevice].object = provider;
  82     fMethods[kADBReleaseDevice].func = (IOMethod)&IOADBController::releaseDevice;
  83     fMethods[kADBReleaseDevice].count0 = 1;
  84     fMethods[kADBReleaseDevice].count1 = 0;
  85     fMethods[kADBReleaseDevice].flags = kIOUCScalarIScalarO;
  86
  87     return true;
  88 }
  89
  90 IOReturn IOADBControllerUserClient::clientMemoryForType( UInt32 type,
  91     UInt32 * flags, IOLogicalAddress * address, IOByteCount * size )
  92 {
  93     return kIOReturnUnsupported;
  94 }
  95
  96 IOReturn IOADBControllerUserClient::clientClose( void )
  97 {
  98     detach( fOwner);
  99
 100     return kIOReturnSuccess;
 101 }
 102
 103 IOReturn IOADBControllerUserClient::clientDied( void )
 104 {
 105     return( clientClose());
 106 }
 107
 108 IOReturn IOADBControllerUserClient::connectClient( IOUserClient * client )
 109 {
 110     return kIOReturnSuccess;
 111 }
 112
 113 IOExternalMethod * IOADBControllerUserClient::getExternalMethodForIndex( UInt32 index )
 114 {
 115     if(index >= kNumADBMethods)
 116         return NULL;
 117     else
 118         return &fMethods[index];
 119 }
 120
 121 IOReturn IOADBControllerUserClient::registerNotificationPort ( mach_port_t port, UInt32 type )
 122 {
 123     return kIOReturnUnsupported;
 124 }
 125