--- xnu/xnu-12377.101.15/iokit/Kernel/IODMAEventSource.cpp
+++ /dev/null
@@ -1,261 +0,0 @@
-/*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- *
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
- */
-
-#define IOKIT_ENABLE_SHARED_PTR
-
-#include <IOKit/IODMAEventSource.h>
-#include <IOKit/IOService.h>
-
-#include "IOKitKernelInternal.h"
-
-
-#define super IOEventSource
-OSDefineMetaClassAndStructors(IODMAEventSource, IOEventSource);
-
-bool
-IODMAEventSource::init(OSObject *inOwner,
-    IOService *inProvider,
-    Action inCompletion,
-    Action inNotification,
-    UInt32 inDMAIndex)
-{
-	IOReturn result;
-
-	if (!super::init(inOwner)) {
-		return false;
-	}
-
-	if (inProvider == NULL) {
-		return false;
-	}
-
-	dmaProvider = inProvider;
-	dmaIndex = 0xFFFFFFFF;
-	dmaCompletionAction = inCompletion;
-	dmaNotificationAction = inNotification;
-
-	dmaController.reset(IODMAController::getController(dmaProvider, inDMAIndex), OSRetain);
-	if (dmaController == NULL) {
-		return false;
-	}
-
-	result = dmaController->initDMAChannel(dmaProvider, this, &dmaIndex, inDMAIndex);
-	if (result != kIOReturnSuccess) {
-		return false;
-	}
-
-	queue_init(&dmaCommandsCompleted);
-	dmaCommandsCompletedLock = IOSimpleLockAlloc();
-
-	return true;
-}
-
-void
-IODMAEventSource::free()
-{
-	if (dmaCommandsCompletedLock != NULL) {
-		IOSimpleLockFree(dmaCommandsCompletedLock);
-	}
-	super::free();
-}
-
-OSSharedPtr<IODMAEventSource>
-IODMAEventSource::dmaEventSource(OSObject *inOwner,
-    IOService *inProvider,
-    Action inCompletion,
-    Action inNotification,
-    UInt32 inDMAIndex)
-{
-	OSSharedPtr<IODMAEventSource> dmaES = OSMakeShared<IODMAEventSource>();
-
-	if (dmaES && !dmaES->init(inOwner, inProvider, inCompletion, inNotification, inDMAIndex)) {
-		return nullptr;
-	}
-
-	return dmaES;
-}
-
-IOReturn
-IODMAEventSource::startDMACommand(IODMACommand *dmaCommand, IODirection direction, IOByteCount byteCount, IOByteCount byteOffset)
-{
-	IOReturn result;
-
-	if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
-		return kIOReturnError;
-	}
-
-	if (dmaSynchBusy) {
-		return kIOReturnBusy;
-	}
-
-	if (dmaCompletionAction == NULL) {
-		dmaSynchBusy = true;
-	}
-
-	result = dmaController->startDMACommand(dmaIndex, dmaCommand, direction, byteCount, byteOffset);
-
-	if (result != kIOReturnSuccess) {
-		dmaSynchBusy = false;
-		return result;
-	}
-
-	while (dmaSynchBusy) {
-		sleepGate(&dmaSynchBusy, THREAD_UNINT);
-	}
-
-	return kIOReturnSuccess;
-}
-
-IOReturn
-IODMAEventSource::stopDMACommand(bool flush, uint64_t timeout)
-{
-	if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
-		return kIOReturnError;
-	}
-
-	return dmaController->stopDMACommand(dmaIndex, flush, timeout);
-}
-
-
-IOReturn
-IODMAEventSource::queryDMACommand(IODMACommand **dmaCommand, IOByteCount *transferCount, bool waitForIdle)
-{
-	if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
-		return kIOReturnError;
-	}
-
-	return dmaController->queryDMACommand(dmaIndex, dmaCommand, transferCount, waitForIdle);
-}
-
-
-IOByteCount
-IODMAEventSource::getFIFODepth(IODirection direction)
-{
-	if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
-		return 0;
-	}
-
-	return dmaController->getFIFODepth(dmaIndex, direction);
-}
-
-
-IOReturn
-IODMAEventSource::setFIFODepth(IOByteCount depth)
-{
-	if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
-		return kIOReturnError;
-	}
-
-	return dmaController->setFIFODepth(dmaIndex, depth);
-}
-
-
-IOByteCount
-IODMAEventSource::validFIFODepth(IOByteCount depth, IODirection direction)
-{
-	if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
-		return kIOReturnError;
-	}
-
-	return dmaController->validFIFODepth(dmaIndex, depth, direction);
-}
-
-
-IOReturn
-IODMAEventSource::setFrameSize(UInt8 byteCount)
-{
-	if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
-		return kIOReturnError;
-	}
-
-	return dmaController->setFrameSize(dmaIndex, byteCount);
-}
-
-// protected
-
-bool
-IODMAEventSource::checkForWork(void)
-{
-	IODMACommand     *dmaCommand = NULL;
-	bool work, again;
-
-	IOSimpleLockLock(dmaCommandsCompletedLock);
-	work = !queue_empty(&dmaCommandsCompleted);
-	if (work) {
-		queue_remove_first(&dmaCommandsCompleted, dmaCommand, IODMACommand *, fCommandChain);
-		again = !queue_empty(&dmaCommandsCompleted);
-	} else {
-		again = false;
-	}
-	IOSimpleLockUnlock(dmaCommandsCompletedLock);
-
-	if (work) {
-		(*dmaCompletionAction)(owner, this, dmaCommand, dmaCommand->reserved->fStatus, dmaCommand->reserved->fActualByteCount, dmaCommand->reserved->fTimeStamp);
-	}
-
-	return again;
-}
-
-void
-IODMAEventSource::completeDMACommand(IODMACommand *dmaCommand)
-{
-	if (dmaCompletionAction != NULL) {
-		IOSimpleLockLock(dmaCommandsCompletedLock);
-		queue_enter(&dmaCommandsCompleted, dmaCommand, IODMACommand *, fCommandChain);
-		IOSimpleLockUnlock(dmaCommandsCompletedLock);
-
-		signalWorkAvailable();
-	} else {
-		dmaSynchBusy = false;
-		wakeupGate(&dmaSynchBusy, true);
-	}
-}
-
-void
-IODMAEventSource::notifyDMACommand(IODMACommand *dmaCommand, IOReturn status, IOByteCount actualByteCount, AbsoluteTime timeStamp)
-{
-	dmaCommand->reserved->fStatus = status;
-	dmaCommand->reserved->fActualByteCount = actualByteCount;
-	dmaCommand->reserved->fTimeStamp = timeStamp;
-
-	if (dmaNotificationAction != NULL) {
-		(*dmaNotificationAction)(owner, this, dmaCommand, status, actualByteCount, timeStamp);
-	}
-}
-
-IOReturn
-IODMAEventSource::setDMAConfig(UInt32 newReqIndex)
-{
-	return dmaController->setDMAConfig(dmaIndex, dmaProvider, newReqIndex);
-}
-
-bool
-IODMAEventSource::validDMAConfig(UInt32 newReqIndex)
-{
-	return dmaController->validDMAConfig(dmaIndex, dmaProvider, newReqIndex);
-}