/*
- * Copyright (c) 1999-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1999-2016 Apple 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
* 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,
* 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@
- */
-/*
- * Copyright (c) 1999-2000 Apple Computer, Inc. All rights reserved.
- *
- * DRI: Josh de Cesare
*
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
+#define IOKIT_ENABLE_SHARED_PTR
+
extern "C" {
#include <machine/machine_routines.h>
#include <pexpert/pexpert.h>
+#include <kern/cpu_number.h>
+extern void kperf_kernel_configure(char *);
}
-#include <machine/machine_routines.h>
-
#include <IOKit/IOLib.h>
#include <IOKit/IOPlatformExpert.h>
#include <IOKit/pwr_mgt/RootDomain.h>
+#include <IOKit/pwr_mgt/IOPMPrivate.h>
+#include <libkern/c++/OSSharedPtr.h>
#include <IOKit/IOUserClient.h>
#include <IOKit/IOKitKeysPrivate.h>
#include <IOKit/IOCPU.h>
+#include "IOKitKernelInternal.h"
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
#include <kern/queue.h>
+#include <kern/sched_prim.h>
-typedef kern_return_t (*iocpu_platform_action_t)(void * refcon0, void * refcon1, uint32_t priority,
- void * param1, void * param2, void * param3);
+extern "C" void console_suspend();
+extern "C" void console_resume();
+extern "C" void sched_override_recommended_cores_for_sleep(void);
+extern "C" void sched_restore_recommended_cores_after_sleep(void);
-struct iocpu_platform_action_entry
-{
- queue_chain_t link;
- iocpu_platform_action_t action;
- int32_t priority;
- void * refcon0;
- void * refcon1;
- struct iocpu_platform_action_entry * alloc_list;
-};
-typedef struct iocpu_platform_action_entry iocpu_platform_action_entry_t;
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-queue_head_t *
-iocpu_get_platform_quiesce_queue(void);
+static IOLock *gIOCPUsLock;
+static OSSharedPtr<OSArray> gIOCPUs;
+static OSSharedPtr<const OSSymbol> gIOCPUStateKey;
+static OSSharedPtr<OSString> gIOCPUStateNames[kIOCPUStateCount];
-queue_head_t *
-iocpu_get_platform_active_queue(void);
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-void
-iocpu_platform_cpu_action_init(queue_head_t * quiesce_queue, queue_head_t * init_queue);
+#if !USE_APPLEARMSMP
void
-iocpu_add_platform_action(queue_head_t * queue, iocpu_platform_action_entry_t * entry);
+IOCPUInitialize(void)
+{
+ gIOCPUsLock = IOLockAlloc();
+ gIOCPUs = OSArray::withCapacity(1);
-void
-iocpu_remove_platform_action(iocpu_platform_action_entry_t * entry);
+ gIOCPUStateKey = OSSymbol::withCStringNoCopy("IOCPUState");
-kern_return_t
-iocpu_run_platform_actions(queue_head_t * queue, uint32_t first_priority, uint32_t last_priority,
- void * param1, void * param2, void * param3);
+ gIOCPUStateNames[kIOCPUStateUnregistered] =
+ OSString::withCStringNoCopy("Unregistered");
+ gIOCPUStateNames[kIOCPUStateUninitalized] =
+ OSString::withCStringNoCopy("Uninitalized");
+ gIOCPUStateNames[kIOCPUStateStopped] =
+ OSString::withCStringNoCopy("Stopped");
+ gIOCPUStateNames[kIOCPUStateRunning] =
+ OSString::withCStringNoCopy("Running");
+}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-#define kBootCPUNumber 0
+kern_return_t
+PE_cpu_start(cpu_id_t target,
+ vm_offset_t start_paddr, vm_offset_t arg_paddr)
+{
+ IOCPU *targetCPU = (IOCPU *)target;
-static iocpu_platform_action_entry_t * gIOAllActionsQueue;
-static queue_head_t gIOSleepActionQueue;
-static queue_head_t gIOWakeActionQueue;
+ if (targetCPU == NULL) {
+ return KERN_FAILURE;
+ }
+ return targetCPU->startCPU(start_paddr, arg_paddr);
+}
-static queue_head_t iocpu_quiesce_queue;
-static queue_head_t iocpu_active_queue;
+void
+PE_cpu_halt(cpu_id_t target)
+{
+ IOCPU *targetCPU = (IOCPU *)target;
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+ targetCPU->haltCPU();
+}
-void
-iocpu_platform_cpu_action_init(queue_head_t * quiesce_queue, __unused queue_head_t * init_queue)
+void
+PE_cpu_signal(cpu_id_t source, cpu_id_t target)
{
-#if 0
- enum { kNumQuiesceActions = 2 };
- static iocpu_platform_action_entry_t quiesce_actions[kNumQuiesceActions] =
- {
- { { NULL, NULL }, (iocpu_platform_action_t) &clean_mmu_dcache, 97000, 0, 0, NULL },
- { { NULL, NULL }, (iocpu_platform_action_t) &arm_sleep, 99000, 0, 0, NULL },
- };
- unsigned int idx;
+ IOCPU *sourceCPU = (IOCPU *)source;
+ IOCPU *targetCPU = (IOCPU *)target;
- for (idx = 0; idx < kNumQuiesceActions; idx++)
- iocpu_add_platform_action(quiesce_queue, &quiesce_actions[idx]);
-#endif
+ sourceCPU->signalCPU(targetCPU);
}
-queue_head_t * iocpu_get_platform_quiesce_queue(void)
+void
+PE_cpu_signal_deferred(cpu_id_t source, cpu_id_t target)
{
- if (!iocpu_quiesce_queue.next)
- {
- queue_init(&iocpu_quiesce_queue);
- queue_init(&iocpu_active_queue);
- iocpu_platform_cpu_action_init(&iocpu_quiesce_queue, &iocpu_active_queue);
- }
- return (&iocpu_quiesce_queue);
+ IOCPU *sourceCPU = (IOCPU *)source;
+ IOCPU *targetCPU = (IOCPU *)target;
+
+ sourceCPU->signalCPUDeferred(targetCPU);
}
-queue_head_t * iocpu_get_platform_active_queue(void)
+void
+PE_cpu_signal_cancel(cpu_id_t source, cpu_id_t target)
{
- return (&iocpu_active_queue);
+ IOCPU *sourceCPU = (IOCPU *)source;
+ IOCPU *targetCPU = (IOCPU *)target;
+
+ sourceCPU->signalCPUCancel(targetCPU);
}
-void iocpu_add_platform_action(queue_head_t * queue, iocpu_platform_action_entry_t * entry)
+void
+PE_cpu_machine_init(cpu_id_t target, boolean_t bootb)
{
- iocpu_platform_action_entry_t * next;
+ IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
- queue_iterate(queue, next, iocpu_platform_action_entry_t *, link)
- {
- if (next->priority > entry->priority)
- {
- queue_insert_before(queue, entry, next, iocpu_platform_action_entry_t *, link);
- return;
+ if (targetCPU == NULL) {
+ panic("%s: invalid target CPU %p", __func__, target);
}
- }
- queue_enter(queue, entry, iocpu_platform_action_entry_t *, link); // at tail
+
+ targetCPU->initCPU(bootb);
+#if defined(__arm__) || defined(__arm64__)
+ if (!bootb && (targetCPU->getCPUNumber() == (UInt32)master_cpu)) {
+ ml_set_is_quiescing(false);
+ }
+#endif /* defined(__arm__) || defined(__arm64__) */
}
-void iocpu_remove_platform_action(iocpu_platform_action_entry_t * entry)
+void
+PE_cpu_machine_quiesce(cpu_id_t target)
{
- remque(&entry->link);
+ IOCPU *targetCPU = (IOCPU*)target;
+#if defined(__arm__) || defined(__arm64__)
+ if (targetCPU->getCPUNumber() == (UInt32)master_cpu) {
+ ml_set_is_quiescing(true);
+ }
+#endif /* defined(__arm__) || defined(__arm64__) */
+ targetCPU->quiesceCPU();
}
+#if defined(__arm__) || defined(__arm64__)
+static perfmon_interrupt_handler_func pmi_handler = NULL;
+
kern_return_t
-iocpu_run_platform_actions(queue_head_t * queue, uint32_t first_priority, uint32_t last_priority,
- void * param1, void * param2, void * param3)
+PE_cpu_perfmon_interrupt_install_handler(perfmon_interrupt_handler_func handler)
+{
+ pmi_handler = handler;
+
+ return KERN_SUCCESS;
+}
+
+void
+PE_cpu_perfmon_interrupt_enable(cpu_id_t target, boolean_t enable)
{
- kern_return_t ret = KERN_SUCCESS;
- kern_return_t result = KERN_SUCCESS;
- iocpu_platform_action_entry_t * next;
+ IOCPU *targetCPU = (IOCPU*)target;
+
+ if (targetCPU == nullptr) {
+ return;
+ }
- queue_iterate(queue, next, iocpu_platform_action_entry_t *, link)
- {
- uint32_t pri = (next->priority < 0) ? -next->priority : next->priority;
- if ((pri >= first_priority) && (pri <= last_priority))
- {
- //kprintf("[%p]", next->action);
- ret = (*next->action)(next->refcon0, next->refcon1, pri, param1, param2, param3);
+ if (enable) {
+ targetCPU->getProvider()->registerInterrupt(1, targetCPU, (IOInterruptAction)pmi_handler, NULL);
+ targetCPU->getProvider()->enableInterrupt(1);
+ } else {
+ targetCPU->getProvider()->disableInterrupt(1);
}
- if (KERN_SUCCESS == result)
- result = ret;
- }
- return (result);
}
+#endif
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+#endif /* !USE_APPLEARMSMP */
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#define super IOService
+
+OSDefineMetaClassAndAbstractStructors(IOCPU, IOService);
+OSMetaClassDefineReservedUnused(IOCPU, 0);
+OSMetaClassDefineReservedUnused(IOCPU, 1);
+OSMetaClassDefineReservedUnused(IOCPU, 2);
+OSMetaClassDefineReservedUnused(IOCPU, 3);
+OSMetaClassDefineReservedUnused(IOCPU, 4);
+OSMetaClassDefineReservedUnused(IOCPU, 5);
+OSMetaClassDefineReservedUnused(IOCPU, 6);
+OSMetaClassDefineReservedUnused(IOCPU, 7);
-extern "C" kern_return_t
-IOCPURunPlatformQuiesceActions(void)
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#if !USE_APPLEARMSMP
+void
+IOCPUSleepKernel(void)
{
- return (iocpu_run_platform_actions(iocpu_get_platform_quiesce_queue(), 0, 0UL-1,
- NULL, NULL, NULL));
+#if defined(__x86_64__)
+ extern IOCPU *currentShutdownTarget;
+#endif
+ unsigned int cnt, numCPUs;
+ IOCPU *target;
+ IOCPU *bootCPU = NULL;
+ IOPMrootDomain *rootDomain = IOService::getPMRootDomain();
+
+ printf("IOCPUSleepKernel enter\n");
+#if defined(__arm64__)
+ sched_override_recommended_cores_for_sleep();
+#endif
+
+ rootDomain->tracePoint( kIOPMTracePointSleepPlatformActions );
+ IOPlatformActionsPreSleep();
+ rootDomain->tracePoint( kIOPMTracePointSleepCPUs );
+
+ numCPUs = gIOCPUs->getCount();
+#if defined(__x86_64__)
+ currentShutdownTarget = NULL;
+#endif
+
+ integer_t old_pri;
+ thread_t self = current_thread();
+
+ /*
+ * We need to boost this thread's priority to the maximum kernel priority to
+ * ensure we can urgently preempt ANY thread currently executing on the
+ * target CPU. Note that realtime threads have their own mechanism to eventually
+ * demote their priority below MAXPRI_KERNEL if they hog the CPU for too long.
+ */
+ old_pri = thread_kern_get_pri(self);
+ thread_kern_set_pri(self, thread_kern_get_kernel_maxpri());
+
+ // Sleep the CPUs.
+ ml_set_is_quiescing(true);
+ cnt = numCPUs;
+ while (cnt--) {
+ target = OSDynamicCast(IOCPU, gIOCPUs->getObject(cnt));
+
+ // We make certain that the bootCPU is the last to sleep
+ // We'll skip it for now, and halt it after finishing the
+ // non-boot CPU's.
+ if (target->getCPUNumber() == (UInt32)master_cpu) {
+ bootCPU = target;
+ } else if (target->getCPUState() == kIOCPUStateRunning) {
+#if defined(__x86_64__)
+ currentShutdownTarget = target;
+#endif
+ target->haltCPU();
+ }
+ }
+
+ assert(bootCPU != NULL);
+ assert(cpu_number() == master_cpu);
+
+ console_suspend();
+
+ rootDomain->tracePoint( kIOPMTracePointSleepPlatformDriver );
+ rootDomain->stop_watchdog_timer();
+
+ /*
+ * Now sleep the boot CPU, including calling the kQueueQuiesce actions.
+ * The system sleeps here.
+ */
+
+ bootCPU->haltCPU();
+ ml_set_is_quiescing(false);
+
+ /*
+ * The system is now coming back from sleep on the boot CPU.
+ * The kQueueActive actions have already been called.
+ */
+
+ rootDomain->start_watchdog_timer();
+ rootDomain->tracePoint( kIOPMTracePointWakePlatformActions );
+
+ console_resume();
+
+ IOPlatformActionsPostResume();
+ rootDomain->tracePoint( kIOPMTracePointWakeCPUs );
+
+ // Wake the other CPUs.
+ for (cnt = 0; cnt < numCPUs; cnt++) {
+ target = OSDynamicCast(IOCPU, gIOCPUs->getObject(cnt));
+
+ // Skip the already-woken boot CPU.
+ if (target->getCPUNumber() != (UInt32)master_cpu) {
+ if (target->getCPUState() == kIOCPUStateRunning) {
+ panic("Spurious wakeup of cpu %u", (unsigned int)(target->getCPUNumber()));
+ }
+
+ if (target->getCPUState() == kIOCPUStateStopped) {
+ processor_start(target->getMachProcessor());
+ }
+ }
+ }
+
+#if defined(__arm64__)
+ sched_restore_recommended_cores_after_sleep();
+#endif
+
+ thread_kern_set_pri(self, old_pri);
+ printf("IOCPUSleepKernel exit\n");
}
-extern "C" kern_return_t
-IOCPURunPlatformActiveActions(void)
+static bool
+is_IOCPU_disabled(void)
+{
+ return false;
+}
+#else /* !USE_APPLEARMSMP */
+static bool
+is_IOCPU_disabled(void)
{
- return (iocpu_run_platform_actions(iocpu_get_platform_active_queue(), 0, 0UL-1,
- NULL, NULL, NULL));
+ return true;
}
+#endif /* !USE_APPLEARMSMP */
-static kern_return_t
-IOServicePlatformAction(void * refcon0, void * refcon1, uint32_t priority,
- void * param1, void * param2, void * param3)
+bool
+IOCPU::start(IOService *provider)
{
- IOReturn ret;
- IOService * service = (IOService *) refcon0;
- const OSSymbol * function = (const OSSymbol *) refcon1;
+ if (is_IOCPU_disabled()) {
+ return false;
+ }
- kprintf("%s -> %s\n", function->getCStringNoCopy(), service->getName());
+ if (!super::start(provider)) {
+ return false;
+ }
- ret = service->callPlatformFunction(function, false,
- (void *) priority, param1, param2, param3);
+ _cpuGroup = gIOCPUs;
+ cpuNub = provider;
- return (ret);
-}
+ IOLockLock(gIOCPUsLock);
+ gIOCPUs->setObject(this);
+ IOLockUnlock(gIOCPUsLock);
-static void
-IOInstallServicePlatformAction(IOService * service,
- const OSSymbol * key, queue_head_t * queue,
- bool reverse)
-{
- OSNumber * num;
- iocpu_platform_action_entry_t * entry;
- uint32_t priority;
+ // Correct the bus, cpu and timebase frequencies in the device tree.
+ if (gPEClockFrequencyInfo.bus_frequency_hz < 0x100000000ULL) {
+ OSSharedPtr<OSData> busFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.bus_clock_rate_hz, 4);
+ provider->setProperty("bus-frequency", busFrequency.get());
+ } else {
+ OSSharedPtr<OSData> busFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.bus_frequency_hz, 8);
+ provider->setProperty("bus-frequency", busFrequency.get());
+ }
- num = OSDynamicCast(OSNumber, service->getProperty(key));
- if (!num)
- return;
+ if (gPEClockFrequencyInfo.cpu_frequency_hz < 0x100000000ULL) {
+ OSSharedPtr<OSData> cpuFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.cpu_clock_rate_hz, 4);
+ provider->setProperty("clock-frequency", cpuFrequency.get());
+ } else {
+ OSSharedPtr<OSData> cpuFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.cpu_frequency_hz, 8);
+ provider->setProperty("clock-frequency", cpuFrequency.get());
+ }
- entry = IONew(iocpu_platform_action_entry_t, 1);
- entry->action = &IOServicePlatformAction;
- priority = num->unsigned32BitValue();
- if (reverse)
- entry->priority = -priority;
- else
- entry->priority = priority;
- entry->refcon0 = service;
- entry->refcon1 = (void *) key;
+ OSSharedPtr<OSData> timebaseFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.timebase_frequency_hz, 4);
+ provider->setProperty("timebase-frequency", timebaseFrequency.get());
- iocpu_add_platform_action(queue, entry);
- entry->alloc_list = gIOAllActionsQueue;
- gIOAllActionsQueue = entry;
-}
+ super::setProperty("IOCPUID", getRegistryEntryID(), sizeof(uint64_t) * 8);
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+ setCPUNumber(0);
+ setCPUState(kIOCPUStateUnregistered);
+
+ return true;
+}
-kern_return_t PE_cpu_start(cpu_id_t target,
- vm_offset_t start_paddr, vm_offset_t arg_paddr)
+void
+IOCPU::detach(IOService *provider)
{
- IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
-
- if (targetCPU == 0) return KERN_FAILURE;
- return targetCPU->startCPU(start_paddr, arg_paddr);
+ if (is_IOCPU_disabled()) {
+ return;
+ }
+
+ super::detach(provider);
+ IOLockLock(gIOCPUsLock);
+ unsigned int index = gIOCPUs->getNextIndexOfObject(this, 0);
+ if (index != (unsigned int)-1) {
+ gIOCPUs->removeObject(index);
+ }
+ IOLockUnlock(gIOCPUsLock);
}
-void PE_cpu_halt(cpu_id_t target)
+OSObject *
+IOCPU::getProperty(const OSSymbol *aKey) const
{
- IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
-
- if (targetCPU) targetCPU->haltCPU();
+ if (aKey == gIOCPUStateKey) {
+ return gIOCPUStateNames[_cpuState].get();
+ }
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+ return super::getProperty(aKey);
+#pragma clang diagnostic pop
}
-void PE_cpu_signal(cpu_id_t source, cpu_id_t target)
+bool
+IOCPU::setProperty(const OSSymbol *aKey, OSObject *anObject)
{
- IOCPU *sourceCPU = OSDynamicCast(IOCPU, (OSObject *)source);
- IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
-
- if (sourceCPU && targetCPU) sourceCPU->signalCPU(targetCPU);
+ if (aKey == gIOCPUStateKey) {
+ return false;
+ }
+
+ return super::setProperty(aKey, anObject);
}
-void PE_cpu_machine_init(cpu_id_t target, boolean_t bootb)
+bool
+IOCPU::serializeProperties(OSSerialize *serialize) const
{
- IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
-
- if (targetCPU) targetCPU->initCPU(bootb);
+ bool result;
+ OSSharedPtr<OSDictionary> dict = dictionaryWithProperties();
+ if (!dict) {
+ return false;
+ }
+ dict->setObject(gIOCPUStateKey.get(), gIOCPUStateNames[_cpuState].get());
+ result = dict->serialize(serialize);
+ return result;
}
-void PE_cpu_machine_quiesce(cpu_id_t target)
+IOReturn
+IOCPU::setProperties(OSObject *properties)
{
- IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
+ OSDictionary *dict = OSDynamicCast(OSDictionary, properties);
+ OSString *stateStr;
+ IOReturn result;
- if (targetCPU) targetCPU->quiesceCPU();
-}
+ if (dict == NULL) {
+ return kIOReturnUnsupported;
+ }
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+ stateStr = OSDynamicCast(OSString, dict->getObject(gIOCPUStateKey.get()));
+ if (stateStr != NULL) {
+ result = IOUserClient::clientHasPrivilege(current_task(), kIOClientPrivilegeAdministrator);
+ if (result != kIOReturnSuccess) {
+ return result;
+ }
-#define super IOService
+ if (setProperty(gIOCPUStateKey.get(), stateStr)) {
+ return kIOReturnSuccess;
+ }
-OSDefineMetaClassAndAbstractStructors(IOCPU, IOService);
-OSMetaClassDefineReservedUnused(IOCPU, 0);
-OSMetaClassDefineReservedUnused(IOCPU, 1);
-OSMetaClassDefineReservedUnused(IOCPU, 2);
-OSMetaClassDefineReservedUnused(IOCPU, 3);
-OSMetaClassDefineReservedUnused(IOCPU, 4);
-OSMetaClassDefineReservedUnused(IOCPU, 5);
-OSMetaClassDefineReservedUnused(IOCPU, 6);
-OSMetaClassDefineReservedUnused(IOCPU, 7);
+ return kIOReturnUnsupported;
+ }
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+ return kIOReturnUnsupported;
+}
-static OSArray *gIOCPUs;
-static const OSSymbol *gIOCPUStateKey;
-static OSString *gIOCPUStateNames[kIOCPUStateCount];
-
-void IOCPUSleepKernel(void)
-{
- long cnt, numCPUs;
- IOCPU *target;
- IOCPU *bootCPU = NULL;
-
- kprintf("IOCPUSleepKernel\n");
-
- OSIterator * iter;
- IOService * service;
-
- queue_init(&gIOSleepActionQueue);
- queue_init(&gIOWakeActionQueue);
-
- iter = IORegistryIterator::iterateOver( gIOServicePlane,
- kIORegistryIterateRecursively );
- if( iter)
- {
- do
- {
- iter->reset();
- while((service = (IOService *) iter->getNextObject()))
- {
- IOInstallServicePlatformAction(service, gIOPlatformSleepActionKey, &gIOSleepActionQueue, false);
- IOInstallServicePlatformAction(service, gIOPlatformWakeActionKey, &gIOWakeActionQueue, true);
- IOInstallServicePlatformAction(service, gIOPlatformQuiesceActionKey, iocpu_get_platform_quiesce_queue(), false);
- IOInstallServicePlatformAction(service, gIOPlatformActiveActionKey, iocpu_get_platform_active_queue(), true);
- }
- }
- while( !service && !iter->isValid());
- iter->release();
- }
-
- iocpu_run_platform_actions(&gIOSleepActionQueue, 0, 0UL-1,
- NULL, NULL, NULL);
-
- numCPUs = gIOCPUs->getCount();
- // Sleep the CPUs.
- cnt = numCPUs;
- while (cnt--)
- {
- target = OSDynamicCast(IOCPU, gIOCPUs->getObject(cnt));
-
- // We make certain that the bootCPU is the last to sleep
- // We'll skip it for now, and halt it after finishing the
- // non-boot CPU's.
- if (target->getCPUNumber() == kBootCPUNumber)
- {
- bootCPU = target;
- } else if (target->getCPUState() == kIOCPUStateRunning)
- {
- target->haltCPU();
- }
- }
-
- // Now sleep the boot CPU.
- if (bootCPU)
- bootCPU->haltCPU();
-
- iocpu_run_platform_actions(&gIOWakeActionQueue, 0, 0UL-1,
- NULL, NULL, NULL);
-
- iocpu_platform_action_entry_t * entry;
- while ((entry = gIOAllActionsQueue))
- {
- gIOAllActionsQueue = entry->alloc_list;
- iocpu_remove_platform_action(entry);
- IODelete(entry, iocpu_platform_action_entry_t, 1);
- }
-
- if (!queue_empty(&gIOSleepActionQueue))
- IOPanic("gIOSleepActionQueue");
- if (!queue_empty(&gIOWakeActionQueue))
- IOPanic("gIOWakeActionQueue");
-
- // Wake the other CPUs.
- for (cnt = 0; cnt < numCPUs; cnt++)
- {
- target = OSDynamicCast(IOCPU, gIOCPUs->getObject(cnt));
-
- // Skip the already-woken boot CPU.
- if ((target->getCPUNumber() != kBootCPUNumber)
- && (target->getCPUState() == kIOCPUStateStopped))
- {
- processor_start(target->getMachProcessor());
- }
- }
-}
-
-void IOCPU::initCPUs(void)
-{
- if (gIOCPUs == 0) {
- gIOCPUs = OSArray::withCapacity(1);
-
- gIOCPUStateKey = OSSymbol::withCStringNoCopy("IOCPUState");
-
- gIOCPUStateNames[kIOCPUStateUnregistered] =
- OSString::withCStringNoCopy("Unregistered");
- gIOCPUStateNames[kIOCPUStateUninitalized] =
- OSString::withCStringNoCopy("Uninitalized");
- gIOCPUStateNames[kIOCPUStateStopped] =
- OSString::withCStringNoCopy("Stopped");
- gIOCPUStateNames[kIOCPUStateRunning] =
- OSString::withCStringNoCopy("Running");
- }
-}
-
-bool IOCPU::start(IOService *provider)
-{
- OSData *busFrequency, *cpuFrequency, *timebaseFrequency;
-
- if (!super::start(provider)) return false;
-
- initCPUs();
-
- _cpuGroup = gIOCPUs;
- cpuNub = provider;
-
- gIOCPUs->setObject(this);
-
- // Correct the bus, cpu and timebase frequencies in the device tree.
- if (gPEClockFrequencyInfo.bus_frequency_hz < 0x100000000ULL) {
- busFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.bus_clock_rate_hz, 4);
- } else {
- busFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.bus_frequency_hz, 8);
- }
- provider->setProperty("bus-frequency", busFrequency);
- busFrequency->release();
-
- if (gPEClockFrequencyInfo.cpu_frequency_hz < 0x100000000ULL) {
- cpuFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.cpu_clock_rate_hz, 4);
- } else {
- cpuFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.cpu_frequency_hz, 8);
- }
- provider->setProperty("clock-frequency", cpuFrequency);
- cpuFrequency->release();
-
- timebaseFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.timebase_frequency_hz, 4);
- provider->setProperty("timebase-frequency", timebaseFrequency);
- timebaseFrequency->release();
-
- super::setProperty("IOCPUID", (UInt32)this, 32);
-
- setCPUNumber(0);
- setCPUState(kIOCPUStateUnregistered);
-
- return true;
-}
-
-OSObject *IOCPU::getProperty(const OSSymbol *aKey) const
-{
- if (aKey == gIOCPUStateKey) return gIOCPUStateNames[_cpuState];
-
- return super::getProperty(aKey);
-}
-
-bool IOCPU::setProperty(const OSSymbol *aKey, OSObject *anObject)
-{
- OSString *stateStr;
-
- if (aKey == gIOCPUStateKey) {
- stateStr = OSDynamicCast(OSString, anObject);
- if (stateStr == 0) return false;
-
- if (_cpuNumber == 0) return false;
-
- if (stateStr->isEqualTo("running")) {
- if (_cpuState == kIOCPUStateStopped) {
- processor_start(machProcessor);
- } else if (_cpuState != kIOCPUStateRunning) {
- return false;
- }
- } else if (stateStr->isEqualTo("stopped")) {
- if (_cpuState == kIOCPUStateRunning) {
- haltCPU();
- } else if (_cpuState != kIOCPUStateStopped) {
- return false;
- }
- } else return false;
-
- return true;
- }
-
- return super::setProperty(aKey, anObject);
-}
-
-bool IOCPU::serializeProperties(OSSerialize *serialize) const
+void
+IOCPU::signalCPU(IOCPU */*target*/)
{
- bool result;
- OSDictionary *dict = dictionaryWithProperties();
- dict->setObject(gIOCPUStateKey, gIOCPUStateNames[_cpuState]);
- result = dict->serialize(serialize);
- dict->release();
- return result;
}
-IOReturn IOCPU::setProperties(OSObject *properties)
+void
+IOCPU::signalCPUDeferred(IOCPU *target)
{
- OSDictionary *dict = OSDynamicCast(OSDictionary, properties);
- OSString *stateStr;
- IOReturn result;
-
- if (dict == 0) return kIOReturnUnsupported;
-
- stateStr = OSDynamicCast(OSString, dict->getObject(gIOCPUStateKey));
- if (stateStr != 0) {
- result = IOUserClient::clientHasPrivilege(current_task(), kIOClientPrivilegeAdministrator);
- if (result != kIOReturnSuccess) return result;
-
- if (setProperty(gIOCPUStateKey, stateStr)) return kIOReturnSuccess;
-
- return kIOReturnUnsupported;
- }
-
- return kIOReturnUnsupported;
+ // Our CPU may not support deferred IPIs,
+ // so send a regular IPI by default
+ signalCPU(target);
}
-void IOCPU::signalCPU(IOCPU */*target*/)
+void
+IOCPU::signalCPUCancel(IOCPU */*target*/)
{
+ // Meant to cancel signals sent by
+ // signalCPUDeferred; unsupported
+ // by default
}
-void IOCPU::enableCPUTimeBase(bool /*enable*/)
+void
+IOCPU::enableCPUTimeBase(bool /*enable*/)
{
}
-UInt32 IOCPU::getCPUNumber(void)
+UInt32
+IOCPU::getCPUNumber(void)
{
- return _cpuNumber;
+ return _cpuNumber;
}
-void IOCPU::setCPUNumber(UInt32 cpuNumber)
+void
+IOCPU::setCPUNumber(UInt32 cpuNumber)
{
- _cpuNumber = cpuNumber;
- super::setProperty("IOCPUNumber", _cpuNumber, 32);
+ _cpuNumber = cpuNumber;
+ super::setProperty("IOCPUNumber", _cpuNumber, 32);
}
-UInt32 IOCPU::getCPUState(void)
+UInt32
+IOCPU::getCPUState(void)
{
- return _cpuState;
+ return _cpuState;
}
-void IOCPU::setCPUState(UInt32 cpuState)
+void
+IOCPU::setCPUState(UInt32 cpuState)
{
- if (cpuState < kIOCPUStateCount) {
- _cpuState = cpuState;
- }
+ if (cpuState < kIOCPUStateCount) {
+ _cpuState = cpuState;
+ }
}
-OSArray *IOCPU::getCPUGroup(void)
+OSArray *
+IOCPU::getCPUGroup(void)
{
- return _cpuGroup;
+ return _cpuGroup.get();
}
-UInt32 IOCPU::getCPUGroupSize(void)
+UInt32
+IOCPU::getCPUGroupSize(void)
{
- return _cpuGroup->getCount();
+ return _cpuGroup->getCount();
}
-processor_t IOCPU::getMachProcessor(void)
+processor_t
+IOCPU::getMachProcessor(void)
{
- return machProcessor;
+ return machProcessor;
}
OSDefineMetaClassAndStructors(IOCPUInterruptController, IOInterruptController);
-OSMetaClassDefineReservedUnused(IOCPUInterruptController, 0);
OSMetaClassDefineReservedUnused(IOCPUInterruptController, 1);
OSMetaClassDefineReservedUnused(IOCPUInterruptController, 2);
OSMetaClassDefineReservedUnused(IOCPUInterruptController, 3);
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+IOReturn
+IOCPUInterruptController::initCPUInterruptController(int sources)
+{
+ return initCPUInterruptController(sources, sources);
+}
+
+IOReturn
+IOCPUInterruptController::initCPUInterruptController(int sources, int cpus)
+{
+ int cnt;
+
+ if (!super::init()) {
+ return kIOReturnInvalid;
+ }
+
+ numSources = sources;
+ numCPUs = cpus;
+
+ vectors = (IOInterruptVector *)IOMalloc(numSources * sizeof(IOInterruptVector));
+ if (vectors == NULL) {
+ return kIOReturnNoMemory;
+ }
+ bzero(vectors, numSources * sizeof(IOInterruptVector));
+
+ // Allocate a lock for each vector
+ for (cnt = 0; cnt < numSources; cnt++) {
+ vectors[cnt].interruptLock = IOLockAlloc();
+ if (vectors[cnt].interruptLock == NULL) {
+ for (cnt = 0; cnt < numSources; cnt++) {
+ if (vectors[cnt].interruptLock != NULL) {
+ IOLockFree(vectors[cnt].interruptLock);
+ }
+ }
+ return kIOReturnNoResources;
+ }
+ }
+
+ ml_set_max_cpus(numSources);
+ return kIOReturnSuccess;
+}
-IOReturn IOCPUInterruptController::initCPUInterruptController(int sources)
-{
- int cnt;
-
- if (!super::init()) return kIOReturnInvalid;
-
- numCPUs = sources;
-
- cpus = (IOCPU **)IOMalloc(numCPUs * sizeof(IOCPU *));
- if (cpus == 0) return kIOReturnNoMemory;
- bzero(cpus, numCPUs * sizeof(IOCPU *));
-
- vectors = (IOInterruptVector *)IOMalloc(numCPUs * sizeof(IOInterruptVector));
- if (vectors == 0) return kIOReturnNoMemory;
- bzero(vectors, numCPUs * sizeof(IOInterruptVector));
-
- // Allocate locks for the
- for (cnt = 0; cnt < numCPUs; cnt++) {
- vectors[cnt].interruptLock = IOLockAlloc();
- if (vectors[cnt].interruptLock == NULL) {
- for (cnt = 0; cnt < numCPUs; cnt++) {
- if (vectors[cnt].interruptLock != NULL)
- IOLockFree(vectors[cnt].interruptLock);
- }
- return kIOReturnNoResources;
- }
- }
-
- ml_init_max_cpus(numCPUs);
-
- return kIOReturnSuccess;
-}
-
-void IOCPUInterruptController::registerCPUInterruptController(void)
-{
- registerService();
-
- getPlatform()->registerInterruptController(gPlatformInterruptControllerName,
- this);
-}
-
-void IOCPUInterruptController::setCPUInterruptProperties(IOService *service)
-{
- int cnt;
- OSArray *controller;
- OSArray *specifier;
- OSData *tmpData;
- long tmpLong;
-
- if ((service->getProperty(gIOInterruptControllersKey) != 0) &&
- (service->getProperty(gIOInterruptSpecifiersKey) != 0))
- return;
-
- // Create the interrupt specifer array.
- specifier = OSArray::withCapacity(numCPUs);
- for (cnt = 0; cnt < numCPUs; cnt++) {
- tmpLong = cnt;
- tmpData = OSData::withBytes(&tmpLong, sizeof(tmpLong));
- specifier->setObject(tmpData);
- tmpData->release();
- };
-
- // Create the interrupt controller array.
- controller = OSArray::withCapacity(numCPUs);
- for (cnt = 0; cnt < numCPUs; cnt++) {
- controller->setObject(gPlatformInterruptControllerName);
- }
-
- // Put the two arrays into the property table.
- service->setProperty(gIOInterruptControllersKey, controller);
- service->setProperty(gIOInterruptSpecifiersKey, specifier);
- controller->release();
- specifier->release();
-}
-
-void IOCPUInterruptController::enableCPUInterrupt(IOCPU *cpu)
+void
+IOCPUInterruptController::registerCPUInterruptController(void)
+{
+ setProperty(gPlatformInterruptControllerName, kOSBooleanTrue);
+ registerService();
+
+ getPlatform()->registerInterruptController(gPlatformInterruptControllerName,
+ this);
+}
+
+void
+IOCPUInterruptController::setCPUInterruptProperties(IOService *service)
+{
+ int cnt;
+ OSSharedPtr<OSArray> specifier;
+ OSSharedPtr<OSArray> controller;
+ long tmpLong;
+
+ if ((service->propertyExists(gIOInterruptControllersKey)) &&
+ (service->propertyExists(gIOInterruptSpecifiersKey))) {
+ return;
+ }
+
+ // Create the interrupt specifer array.
+ specifier = OSArray::withCapacity(numSources);
+ for (cnt = 0; cnt < numSources; cnt++) {
+ tmpLong = cnt;
+ OSSharedPtr<OSData> tmpData = OSData::withBytes(&tmpLong, sizeof(tmpLong));
+ specifier->setObject(tmpData.get());
+ }
+
+ // Create the interrupt controller array.
+ controller = OSArray::withCapacity(numSources);
+ for (cnt = 0; cnt < numSources; cnt++) {
+ controller->setObject(gPlatformInterruptControllerName);
+ }
+
+ // Put the two arrays into the property table.
+ service->setProperty(gIOInterruptControllersKey, controller.get());
+ service->setProperty(gIOInterruptSpecifiersKey, specifier.get());
+}
+
+void
+IOCPUInterruptController::enableCPUInterrupt(IOCPU *cpu)
{
IOInterruptHandler handler = OSMemberFunctionCast(
IOInterruptHandler, this, &IOCPUInterruptController::handleInterrupt);
- ml_install_interrupt_handler(cpu, cpu->getCPUNumber(), this, handler, 0);
-
- enabledCPUs++;
-
- if (enabledCPUs == numCPUs) thread_wakeup(this);
-}
-
-IOReturn IOCPUInterruptController::registerInterrupt(IOService *nub,
- int source,
- void *target,
- IOInterruptHandler handler,
- void *refCon)
-{
- IOInterruptVector *vector;
-
- if (source >= numCPUs) return kIOReturnNoResources;
-
- vector = &vectors[source];
-
- // Get the lock for this vector.
- IOTakeLock(vector->interruptLock);
-
- // Make sure the vector is not in use.
- if (vector->interruptRegistered) {
- IOUnlock(vector->interruptLock);
- return kIOReturnNoResources;
- }
-
- // Fill in vector with the client's info.
- vector->handler = handler;
- vector->nub = nub;
- vector->source = source;
- vector->target = target;
- vector->refCon = refCon;
-
- // Get the vector ready. It starts hard disabled.
- vector->interruptDisabledHard = 1;
- vector->interruptDisabledSoft = 1;
- vector->interruptRegistered = 1;
-
- IOUnlock(vector->interruptLock);
-
- if (enabledCPUs != numCPUs) {
- assert_wait(this, THREAD_UNINT);
- thread_block(THREAD_CONTINUE_NULL);
- }
-
- return kIOReturnSuccess;
-}
-
-IOReturn IOCPUInterruptController::getInterruptType(IOService */*nub*/,
- int /*source*/,
- int *interruptType)
-{
- if (interruptType == 0) return kIOReturnBadArgument;
-
- *interruptType = kIOInterruptTypeLevel;
-
- return kIOReturnSuccess;
-}
-
-IOReturn IOCPUInterruptController::enableInterrupt(IOService */*nub*/,
- int /*source*/)
+ assert(numCPUs > 0);
+
+ ml_install_interrupt_handler(cpu, cpu->getCPUNumber(), this, handler, NULL);
+
+ IOTakeLock(vectors[0].interruptLock);
+ ++enabledCPUs;
+
+ if (enabledCPUs == numCPUs) {
+ IOService::cpusRunning();
+ thread_wakeup(this);
+ }
+ IOUnlock(vectors[0].interruptLock);
+}
+
+IOReturn
+IOCPUInterruptController::registerInterrupt(IOService *nub,
+ int source,
+ void *target,
+ IOInterruptHandler handler,
+ void *refCon)
+{
+ IOInterruptVector *vector;
+
+ // Interrupts must be enabled, as this can allocate memory.
+ assert(ml_get_interrupts_enabled() == TRUE);
+
+ if (source >= numSources) {
+ return kIOReturnNoResources;
+ }
+
+ vector = &vectors[source];
+
+ // Get the lock for this vector.
+ IOTakeLock(vector->interruptLock);
+
+ // Make sure the vector is not in use.
+ if (vector->interruptRegistered) {
+ IOUnlock(vector->interruptLock);
+ return kIOReturnNoResources;
+ }
+
+ // Fill in vector with the client's info.
+ vector->handler = handler;
+ vector->nub = nub;
+ vector->source = source;
+ vector->target = target;
+ vector->refCon = refCon;
+
+ // Get the vector ready. It starts hard disabled.
+ vector->interruptDisabledHard = 1;
+ vector->interruptDisabledSoft = 1;
+ vector->interruptRegistered = 1;
+
+ IOUnlock(vector->interruptLock);
+
+ IOTakeLock(vectors[0].interruptLock);
+ if (enabledCPUs != numCPUs) {
+ assert_wait(this, THREAD_UNINT);
+ IOUnlock(vectors[0].interruptLock);
+ thread_block(THREAD_CONTINUE_NULL);
+ } else {
+ IOUnlock(vectors[0].interruptLock);
+ }
+
+ return kIOReturnSuccess;
+}
+
+IOReturn
+IOCPUInterruptController::getInterruptType(IOService */*nub*/,
+ int /*source*/,
+ int *interruptType)
+{
+ if (interruptType == NULL) {
+ return kIOReturnBadArgument;
+ }
+
+ *interruptType = kIOInterruptTypeLevel;
+
+ return kIOReturnSuccess;
+}
+
+IOReturn
+IOCPUInterruptController::enableInterrupt(IOService */*nub*/,
+ int /*source*/)
{
// ml_set_interrupts_enabled(true);
- return kIOReturnSuccess;
+ return kIOReturnSuccess;
}
-IOReturn IOCPUInterruptController::disableInterrupt(IOService */*nub*/,
- int /*source*/)
+IOReturn
+IOCPUInterruptController::disableInterrupt(IOService */*nub*/,
+ int /*source*/)
{
// ml_set_interrupts_enabled(false);
- return kIOReturnSuccess;
+ return kIOReturnSuccess;
}
-IOReturn IOCPUInterruptController::causeInterrupt(IOService */*nub*/,
- int /*source*/)
+IOReturn
+IOCPUInterruptController::causeInterrupt(IOService */*nub*/,
+ int /*source*/)
{
- ml_cause_interrupt();
- return kIOReturnSuccess;
+ ml_cause_interrupt();
+ return kIOReturnSuccess;
}
-IOReturn IOCPUInterruptController::handleInterrupt(void */*refCon*/,
- IOService */*nub*/,
- int source)
+IOReturn
+IOCPUInterruptController::handleInterrupt(void */*refCon*/,
+ IOService */*nub*/,
+ int source)
{
- IOInterruptVector *vector;
-
- vector = &vectors[source];
-
- if (!vector->interruptRegistered) return kIOReturnInvalid;
-
- vector->handler(vector->target, vector->refCon,
- vector->nub, vector->source);
-
- return kIOReturnSuccess;
+ IOInterruptVector *vector;
+
+ vector = &vectors[source];
+
+ if (!vector->interruptRegistered) {
+ return kIOReturnInvalid;
+ }
+
+ vector->handler(vector->target, vector->refCon,
+ vector->nub, vector->source);
+
+ return kIOReturnSuccess;
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
projects / apple / xnu.git / blobdiff