/*
* Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This 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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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_LICENSE_OSREFERENCE_HEADER_END@
*/
#include <IOKit/system.h>
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-#if __i386__
-
-// Only used by the intel implementation of
-// IOService::requireMaxBusStall(UInt32 __unused ns)
-struct BusStallEntry
-{
- const IOService *fService;
- UInt32 fMaxDelay;
-};
-
-static OSData *sBusStall = OSData::withCapacity(8 * sizeof(BusStallEntry));
-static IOLock *sBusStallLock = IOLockAlloc();
-#endif /* __i386__ */
-
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-
void IOService::initialize( void )
{
kern_return_t err;
void IOService::free( void )
{
- requireMaxBusStall(0);
if( getPropertyTable())
unregisterAllInterest();
PMfree();
|| ((provider = getProvider())
&& (provider->__state[1] & kIOServiceSynchronousState));
- if ( options & kIOServiceAsynchronous )
- sync = false;
needConfig = (0 == (__state[1] & (kIOServiceNeedConfigState | kIOServiceConfigState)))
&& (0 == (__state[0] & kIOServiceInactiveState));
IOUserClient *client;
OSObject *temp;
- if (kIOReturnSuccess == newUserClient( owningTask, securityID, type, handler ))
- return kIOReturnSuccess;
-
// First try my own properties for a user client class name
temp = getProperty(gIOUserClientClassKey);
if (temp) {
if (!userClientClass)
return kIOReturnUnsupported;
- // This reference is consumed by the IOServiceOpen call
temp = OSMetaClass::allocClassWithName(userClientClass);
if (!temp)
return kIOReturnNoMemory;
IOReturn IOService::newUserClient( task_t owningTask, void * securityID,
UInt32 type, IOUserClient ** handler )
{
- return( kIOReturnUnsupported );
+ return( newUserClient( owningTask, securityID, type, 0, handler ));
}
IOReturn IOService::requestProbe( IOOptionBits options )
setProperty( gIODeviceMemoryKey, array);
}
-/*
- * For machines where the transfers on an I/O bus can stall because
- * the CPU is in an idle mode, These APIs allow a driver to specify
- * the maximum bus stall that they can handle. 0 indicates no limit.
- */
-void IOService::
-setCPUSnoopDelay(UInt32 __unused ns)
-{
-#if __i386__
- ml_set_maxsnoop(ns);
-#endif /* __i386__ */
-}
-
-UInt32 IOService::
-getCPUSnoopDelay()
-{
-#if __i386__
- return ml_get_maxsnoop();
-#else
- return 0;
-#endif /* __i386__ */
-}
-
-void IOService::
-requireMaxBusStall(UInt32 __unused ns)
-{
-#if __i386__
- static const UInt kNoReplace = -1U; // Must be an illegal index
- UInt replace = kNoReplace;
-
- IOLockLock(sBusStallLock);
-
- UInt count = sBusStall->getLength() / sizeof(BusStallEntry);
- BusStallEntry *entries = (BusStallEntry *) sBusStall->getBytesNoCopy();
-
- if (ns) {
- const BusStallEntry ne = {this, ns};
-
- // Set Maximum bus delay.
- for (UInt i = 0; i < count; i++) {
- const IOService *thisService = entries[i].fService;
- if (this == thisService)
- replace = i;
- else if (!thisService) {
- if (kNoReplace == replace)
- replace = i;
- }
- else {
- const UInt32 thisMax = entries[i].fMaxDelay;
- if (thisMax < ns)
- ns = thisMax;
- }
- }
-
- // Must be safe to call from locked context
- ml_set_maxbusdelay(ns);
-
- if (kNoReplace == replace)
- sBusStall->appendBytes(&ne, sizeof(ne));
- else
- entries[replace] = ne;
- }
- else {
- ns = -1U; // Set to max unsigned, i.e. no restriction
-
- for (UInt i = 0; i < count; i++) {
- // Clear a maximum bus delay.
- const IOService *thisService = entries[i].fService;
- UInt32 thisMax = entries[i].fMaxDelay;
- if (this == thisService)
- replace = i;
- else if (thisService && thisMax < ns)
- ns = thisMax;
- }
-
- // Check if entry found
- if (kNoReplace != replace) {
- entries[replace].fService = 0; // Null the entry
- ml_set_maxbusdelay(ns);
- }
- }
-
- IOLockUnlock(sBusStallLock);
-#endif /* __i386__ */
-}
-
/*
* Device interrupts
*/
OSMetaClassDefineReservedUnused(IOService, 45);
OSMetaClassDefineReservedUnused(IOService, 46);
OSMetaClassDefineReservedUnused(IOService, 47);
-
-#ifdef __ppc__
OSMetaClassDefineReservedUnused(IOService, 48);
OSMetaClassDefineReservedUnused(IOService, 49);
OSMetaClassDefineReservedUnused(IOService, 50);
OSMetaClassDefineReservedUnused(IOService, 61);
OSMetaClassDefineReservedUnused(IOService, 62);
OSMetaClassDefineReservedUnused(IOService, 63);
-#endif
projects / apple / xnu.git / blobdiff