/*
- * Copyright (c) 1999-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1999-2016 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_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
+ * @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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * Copyright (c) 1999-2000 Apple Computer, Inc. All rights reserved.
- *
- * DRI: Josh de Cesare
+ * 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@
*/
extern "C" {
#include <machine/machine_routines.h>
#include <pexpert/pexpert.h>
+#include <kern/cpu_number.h>
+extern void kperf_kernel_configure(char *);
}
#include <IOKit/IOLib.h>
#include <IOKit/IOPlatformExpert.h>
+#include <IOKit/pwr_mgt/RootDomain.h>
+#include <IOKit/pwr_mgt/IOPMPrivate.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>
+
+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);
+
+typedef kern_return_t (*iocpu_platform_action_t)(void * refcon0, void * refcon1, uint32_t priority,
+ void * param1, void * param2, void * param3,
+ const char * name);
+
+struct iocpu_platform_action_entry {
+ queue_chain_t link;
+ iocpu_platform_action_t action;
+ int32_t priority;
+ const char * name;
+ void * refcon0;
+ void * refcon1;
+ boolean_t callout_in_progress;
+ struct iocpu_platform_action_entry * alloc_list;
+};
+typedef struct iocpu_platform_action_entry iocpu_platform_action_entry_t;
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+static IOLock *gIOCPUsLock;
+static OSArray *gIOCPUs;
+static const OSSymbol *gIOCPUStateKey;
+static OSString *gIOCPUStateNames[kIOCPUStateCount];
+
+enum{
+ kQueueSleep = 0,
+ kQueueWake = 1,
+ kQueueQuiesce = 2,
+ kQueueActive = 3,
+ kQueueHaltRestart = 4,
+ kQueuePanic = 5,
+ kQueueCount = 6
+};
+
+const OSSymbol * gIOPlatformSleepActionKey;
+const OSSymbol * gIOPlatformWakeActionKey;
+const OSSymbol * gIOPlatformQuiesceActionKey;
+const OSSymbol * gIOPlatformActiveActionKey;
+const OSSymbol * gIOPlatformHaltRestartActionKey;
+const OSSymbol * gIOPlatformPanicActionKey;
+
+static queue_head_t gActionQueues[kQueueCount];
+static const OSSymbol * gActionSymbols[kQueueCount];
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+static void
+iocpu_add_platform_action(queue_head_t * queue, iocpu_platform_action_entry_t * entry)
+{
+ iocpu_platform_action_entry_t * next;
+
+ 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;
+ }
+ }
+ queue_enter(queue, entry, iocpu_platform_action_entry_t *, link); // at tail
+}
+
+static void
+iocpu_remove_platform_action(iocpu_platform_action_entry_t * entry)
+{
+ remque(&entry->link);
+}
+
+static 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, boolean_t allow_nested_callouts)
+{
+ kern_return_t ret = KERN_SUCCESS;
+ kern_return_t result = KERN_SUCCESS;
+ iocpu_platform_action_entry_t * next;
+
+ 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);
+ if (!allow_nested_callouts && !next->callout_in_progress) {
+ next->callout_in_progress = TRUE;
+ ret = (*next->action)(next->refcon0, next->refcon1, pri, param1, param2, param3, next->name);
+ next->callout_in_progress = FALSE;
+ } else if (allow_nested_callouts) {
+ ret = (*next->action)(next->refcon0, next->refcon1, pri, param1, param2, param3, next->name);
+ }
+ }
+ if (KERN_SUCCESS == result) {
+ result = ret;
+ }
+ }
+ return result;
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+extern "C" kern_return_t
+IOCPURunPlatformQuiesceActions(void)
+{
+ assert(preemption_enabled() == false);
+ return iocpu_run_platform_actions(&gActionQueues[kQueueQuiesce], 0, 0U - 1,
+ NULL, NULL, NULL, TRUE);
+}
+
+extern "C" kern_return_t
+IOCPURunPlatformActiveActions(void)
+{
+ assert(preemption_enabled() == false);
+ return iocpu_run_platform_actions(&gActionQueues[kQueueActive], 0, 0U - 1,
+ NULL, NULL, NULL, TRUE);
+}
+
+extern "C" kern_return_t
+IOCPURunPlatformHaltRestartActions(uint32_t message)
+{
+ if (!gActionQueues[kQueueHaltRestart].next) {
+ return kIOReturnNotReady;
+ }
+ return iocpu_run_platform_actions(&gActionQueues[kQueueHaltRestart], 0, 0U - 1,
+ (void *)(uintptr_t) message, NULL, NULL, TRUE);
+}
+
+extern "C" kern_return_t
+IOCPURunPlatformPanicActions(uint32_t message)
+{
+ // Don't allow nested calls of panic actions
+ if (!gActionQueues[kQueuePanic].next) {
+ return kIOReturnNotReady;
+ }
+ return iocpu_run_platform_actions(&gActionQueues[kQueuePanic], 0, 0U - 1,
+ (void *)(uintptr_t) message, NULL, NULL, FALSE);
+}
+
+
+extern "C" kern_return_t
+IOCPURunPlatformPanicSyncAction(void *addr, uint32_t offset, uint32_t len)
+{
+ PE_panic_save_context_t context = {
+ .psc_buffer = addr,
+ .psc_offset = offset,
+ .psc_length = len
+ };
+
+ // Don't allow nested calls of panic actions
+ if (!gActionQueues[kQueuePanic].next) {
+ return kIOReturnNotReady;
+ }
+ return iocpu_run_platform_actions(&gActionQueues[kQueuePanic], 0, 0U - 1,
+ (void *)(uintptr_t)(kPEPanicSync), &context, NULL, FALSE);
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+static kern_return_t
+IOServicePlatformAction(void * refcon0, void * refcon1, uint32_t priority,
+ void * param1, void * param2, void * param3,
+ const char * service_name)
+{
+ IOReturn ret;
+ IOService * service = (IOService *) refcon0;
+ const OSSymbol * function = (const OSSymbol *) refcon1;
+
+ kprintf("%s -> %s\n", function->getCStringNoCopy(), service_name);
+
+ ret = service->callPlatformFunction(function, false,
+ (void *)(uintptr_t) priority, param1, param2, param3);
+
+ return ret;
+}
+
+static void
+IOInstallServicePlatformAction(IOService * service, uint32_t qidx)
+{
+ iocpu_platform_action_entry_t * entry;
+ OSNumber * num;
+ uint32_t priority;
+ const OSSymbol * key = gActionSymbols[qidx];
+ queue_head_t * queue = &gActionQueues[qidx];
+ bool reverse;
+ bool uniq;
+
+ num = OSDynamicCast(OSNumber, service->getProperty(key));
+ if (!num) {
+ return;
+ }
+
+ reverse = false;
+ uniq = false;
+ switch (qidx) {
+ case kQueueWake:
+ case kQueueActive:
+ reverse = true;
+ break;
+ case kQueueHaltRestart:
+ case kQueuePanic:
+ uniq = true;
+ break;
+ }
+ if (uniq) {
+ queue_iterate(queue, entry, iocpu_platform_action_entry_t *, link)
+ {
+ if (service == entry->refcon0) {
+ return;
+ }
+ }
+ }
+
+ entry = IONew(iocpu_platform_action_entry_t, 1);
+ entry->action = &IOServicePlatformAction;
+ entry->name = service->getName();
+ priority = num->unsigned32BitValue();
+ if (reverse) {
+ entry->priority = -priority;
+ } else {
+ entry->priority = priority;
+ }
+ entry->refcon0 = service;
+ entry->refcon1 = (void *) key;
+ entry->callout_in_progress = FALSE;
+
+ iocpu_add_platform_action(queue, entry);
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+void
+IOCPUInitialize(void)
+{
+ gIOCPUsLock = IOLockAlloc();
+ gIOCPUs = OSArray::withCapacity(1);
+
+ for (uint32_t qidx = kQueueSleep; qidx < kQueueCount; qidx++) {
+ queue_init(&gActionQueues[qidx]);
+ }
+
+ gIOCPUStateKey = OSSymbol::withCStringNoCopy("IOCPUState");
+
+ gIOCPUStateNames[kIOCPUStateUnregistered] =
+ OSString::withCStringNoCopy("Unregistered");
+ gIOCPUStateNames[kIOCPUStateUninitalized] =
+ OSString::withCStringNoCopy("Uninitalized");
+ gIOCPUStateNames[kIOCPUStateStopped] =
+ OSString::withCStringNoCopy("Stopped");
+ gIOCPUStateNames[kIOCPUStateRunning] =
+ OSString::withCStringNoCopy("Running");
+
+ gIOPlatformSleepActionKey = gActionSymbols[kQueueSleep]
+ = OSSymbol::withCStringNoCopy(kIOPlatformSleepActionKey);
+ gIOPlatformWakeActionKey = gActionSymbols[kQueueWake]
+ = OSSymbol::withCStringNoCopy(kIOPlatformWakeActionKey);
+ gIOPlatformQuiesceActionKey = gActionSymbols[kQueueQuiesce]
+ = OSSymbol::withCStringNoCopy(kIOPlatformQuiesceActionKey);
+ gIOPlatformActiveActionKey = gActionSymbols[kQueueActive]
+ = OSSymbol::withCStringNoCopy(kIOPlatformActiveActionKey);
+ gIOPlatformHaltRestartActionKey = gActionSymbols[kQueueHaltRestart]
+ = OSSymbol::withCStringNoCopy(kIOPlatformHaltRestartActionKey);
+ gIOPlatformPanicActionKey = gActionSymbols[kQueuePanic]
+ = OSSymbol::withCStringNoCopy(kIOPlatformPanicActionKey);
+}
+
+IOReturn
+IOInstallServicePlatformActions(IOService * service)
+{
+ IOLockLock(gIOCPUsLock);
+
+ IOInstallServicePlatformAction(service, kQueueHaltRestart);
+ IOInstallServicePlatformAction(service, kQueuePanic);
+
+ IOLockUnlock(gIOCPUsLock);
+
+ return kIOReturnSuccess;
+}
+
+IOReturn
+IORemoveServicePlatformActions(IOService * service)
+{
+ iocpu_platform_action_entry_t * entry;
+ iocpu_platform_action_entry_t * next;
+
+ IOLockLock(gIOCPUsLock);
+
+ for (uint32_t qidx = kQueueSleep; qidx < kQueueCount; qidx++) {
+ next = (typeof(entry))queue_first(&gActionQueues[qidx]);
+ while (!queue_end(&gActionQueues[qidx], &next->link)) {
+ entry = next;
+ next = (typeof(entry))queue_next(&entry->link);
+ if (service == entry->refcon0) {
+ iocpu_remove_platform_action(entry);
+ IODelete(entry, iocpu_platform_action_entry_t, 1);
+ }
+ }
+ }
+
+ IOLockUnlock(gIOCPUsLock);
+
+ return kIOReturnSuccess;
+}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-kern_return_t PE_cpu_start(cpu_id_t target,
- vm_offset_t start_paddr, vm_offset_t arg_paddr)
+kern_return_t
+PE_cpu_start(cpu_id_t target,
+ vm_offset_t start_paddr, vm_offset_t arg_paddr)
+{
+ IOCPU *targetCPU = (IOCPU *)target;
+
+ if (targetCPU == NULL) {
+ return KERN_FAILURE;
+ }
+ return targetCPU->startCPU(start_paddr, arg_paddr);
+}
+
+void
+PE_cpu_halt(cpu_id_t target)
{
- IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
-
- if (targetCPU == 0) return KERN_FAILURE;
- return targetCPU->startCPU(start_paddr, arg_paddr);
+ IOCPU *targetCPU = (IOCPU *)target;
+
+ targetCPU->haltCPU();
}
-void PE_cpu_halt(cpu_id_t target)
+void
+PE_cpu_signal(cpu_id_t source, cpu_id_t target)
{
- IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
-
- if (targetCPU) targetCPU->haltCPU();
+ IOCPU *sourceCPU = (IOCPU *)source;
+ IOCPU *targetCPU = (IOCPU *)target;
+
+ sourceCPU->signalCPU(targetCPU);
}
-void PE_cpu_signal(cpu_id_t source, cpu_id_t target)
+void
+PE_cpu_signal_deferred(cpu_id_t source, cpu_id_t target)
{
- IOCPU *sourceCPU = OSDynamicCast(IOCPU, (OSObject *)source);
- IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
-
- if (sourceCPU && targetCPU) sourceCPU->signalCPU(targetCPU);
+ IOCPU *sourceCPU = (IOCPU *)source;
+ IOCPU *targetCPU = (IOCPU *)target;
+
+ sourceCPU->signalCPUDeferred(targetCPU);
}
-void PE_cpu_machine_init(cpu_id_t target, boolean_t boot)
+void
+PE_cpu_signal_cancel(cpu_id_t source, cpu_id_t target)
{
- IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
-
- if (targetCPU) targetCPU->initCPU(boot);
+ IOCPU *sourceCPU = (IOCPU *)source;
+ IOCPU *targetCPU = (IOCPU *)target;
+
+ sourceCPU->signalCPUCancel(targetCPU);
}
-void PE_cpu_machine_quiesce(cpu_id_t target)
+void
+PE_cpu_machine_init(cpu_id_t target, boolean_t bootb)
{
- IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
-
- if (targetCPU) targetCPU->quiesceCPU();
+ IOCPU *targetCPU = OSDynamicCast(IOCPU, (OSObject *)target);
+
+ if (targetCPU == NULL) {
+ panic("%s: invalid target CPU %p", __func__, target);
+ }
+
+ 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
+PE_cpu_machine_quiesce(cpu_id_t target)
+{
+ 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
+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)
+{
+ IOCPU *targetCPU = (IOCPU*)target;
+
+ if (targetCPU == nullptr) {
+ return;
+ }
+
+ if (enable) {
+ targetCPU->getProvider()->registerInterrupt(1, targetCPU, (IOInterruptAction)pmi_handler, NULL);
+ targetCPU->getProvider()->enableInterrupt(1);
+ } else {
+ targetCPU->getProvider()->disableInterrupt(1);
+ }
+}
+#endif
+
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#define super IOService
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-static OSArray *gIOCPUs;
-static const OSSymbol *gIOCPUStateKey;
-static OSString *gIOCPUStateNames[kIOCPUStateCount];
+void
+IOCPUSleepKernel(void)
+{
+#if defined(__x86_64__)
+ extern IOCPU *currentShutdownTarget;
+#endif
+ long cnt, numCPUs;
+ IOCPU *target;
+ IOCPU *bootCPU = NULL;
+ IOPMrootDomain *rootDomain = IOService::getPMRootDomain();
+
+ kprintf("IOCPUSleepKernel\n");
+#if defined(__arm64__)
+ sched_override_recommended_cores_for_sleep();
+#endif
+
+ IORegistryIterator * iter;
+ OSOrderedSet * all;
+ IOService * service;
+
+ rootDomain->tracePoint( kIOPMTracePointSleepPlatformActions );
+
+ iter = IORegistryIterator::iterateOver( gIOServicePlane,
+ kIORegistryIterateRecursively );
+ if (iter) {
+ all = NULL;
+ do{
+ if (all) {
+ all->release();
+ }
+ all = iter->iterateAll();
+ }while (!iter->isValid());
+ iter->release();
+
+ if (all) {
+ while ((service = (IOService *) all->getFirstObject())) {
+ for (uint32_t qidx = kQueueSleep; qidx <= kQueueActive; qidx++) {
+ IOInstallServicePlatformAction(service, qidx);
+ }
+ all->removeObject(service);
+ }
+ all->release();
+ }
+ }
+
+ iocpu_run_platform_actions(&gActionQueues[kQueueSleep], 0, 0U - 1,
+ NULL, NULL, NULL, TRUE);
+
+ 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.
+ 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();
+
+ /*
+ * 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();
+
+ iocpu_run_platform_actions(&gActionQueues[kQueueWake], 0, 0U - 1,
+ NULL, NULL, NULL, TRUE);
+
+ iocpu_platform_action_entry_t * entry;
+ for (uint32_t qidx = kQueueSleep; qidx <= kQueueActive; qidx++) {
+ while (!(queue_empty(&gActionQueues[qidx]))) {
+ entry = (typeof(entry))queue_first(&gActionQueues[qidx]);
+ iocpu_remove_platform_action(entry);
+ IODelete(entry, iocpu_platform_action_entry_t, 1);
+ }
+ }
+
+ 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);
+}
+
+bool
+IOCPU::start(IOService *provider)
+{
+ OSData *busFrequency, *cpuFrequency, *timebaseFrequency;
+
+ if (!super::start(provider)) {
+ return false;
+ }
+
+ _cpuGroup = gIOCPUs;
+ cpuNub = provider;
+
+ IOLockLock(gIOCPUsLock);
+ gIOCPUs->setObject(this);
+ IOLockUnlock(gIOCPUsLock);
+
+ // 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", getRegistryEntryID(), sizeof(uint64_t) * 8);
+
+ setCPUNumber(0);
+ setCPUState(kIOCPUStateUnregistered);
+
+ return true;
+}
+
+void
+IOCPU::detach(IOService *provider)
+{
+ super::detach(provider);
+ IOLockLock(gIOCPUsLock);
+ unsigned int index = gIOCPUs->getNextIndexOfObject(this, 0);
+ if (index != (unsigned int)-1) {
+ gIOCPUs->removeObject(index);
+ }
+ IOLockUnlock(gIOCPUsLock);
+}
+
+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)
+{
+ if (aKey == gIOCPUStateKey) {
+ return false;
+ }
+
+ return super::setProperty(aKey, anObject);
+}
+
+bool
+IOCPU::serializeProperties(OSSerialize *serialize) const
+{
+ bool result;
+ OSDictionary *dict = dictionaryWithProperties();
+ if (!dict) {
+ return false;
+ }
+ dict->setObject(gIOCPUStateKey, gIOCPUStateNames[_cpuState]);
+ result = dict->serialize(serialize);
+ dict->release();
+ return result;
+}
+
+IOReturn
+IOCPU::setProperties(OSObject *properties)
+{
+ OSDictionary *dict = OSDynamicCast(OSDictionary, properties);
+ OSString *stateStr;
+ IOReturn result;
+
+ if (dict == NULL) {
+ return kIOReturnUnsupported;
+ }
+
+ stateStr = OSDynamicCast(OSString, dict->getObject(gIOCPUStateKey));
+ if (stateStr != NULL) {
+ result = IOUserClient::clientHasPrivilege(current_task(), kIOClientPrivilegeAdministrator);
+ if (result != kIOReturnSuccess) {
+ return result;
+ }
+
+ if (setProperty(gIOCPUStateKey, stateStr)) {
+ return kIOReturnSuccess;
+ }
+
+ return kIOReturnUnsupported;
+ }
-void IOCPUSleepKernel(void)
-{
- long cnt, numCPUs;
- IOCPU *target;
-
- numCPUs = gIOCPUs->getCount();
-
- // Sleep the CPUs.
- cnt = numCPUs;
- while (cnt--) {
- target = OSDynamicCast(IOCPU, gIOCPUs->getObject(cnt));
- if (target->getCPUState() == kIOCPUStateRunning) {
- target->haltCPU();
- }
- }
-
- // Wake the other CPUs.
- for (cnt = 1; cnt < numCPUs; cnt++) {
- target = OSDynamicCast(IOCPU, gIOCPUs->getObject(cnt));
- if (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 dec frequencies in the device tree.
- busFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.bus_clock_rate_hz, 4);
- cpuFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.cpu_clock_rate_hz, 4);
- timebaseFrequency = OSData::withBytesNoCopy((void *)&gPEClockFrequencyInfo.timebase_frequency_hz, 4);
- provider->setProperty("bus-frequency", busFrequency);
- provider->setProperty("clock-frequency", cpuFrequency);
- provider->setProperty("timebase-frequency", timebaseFrequency);
- busFrequency->release();
- cpuFrequency->release();
- timebaseFrequency->release();
-
- setProperty("IOCPUID", (UInt32)this, 32);
-
- setCPUNumber(0);
- setCPUState(kIOCPUStateUnregistered);
-
- return true;
-}
-
-IOReturn IOCPU::setProperties(OSObject *properties)
-{
- OSDictionary *dict = OSDynamicCast(OSDictionary, properties);
- OSString *stateStr;
-
- if (dict == 0) return kIOReturnUnsupported;
-
- stateStr = OSDynamicCast(OSString, dict->getObject(gIOCPUStateKey));
- if (stateStr != 0) {
- if (!IOUserClient::clientHasPrivilege(current_task(), "root"))
- return kIOReturnNotPrivileged;
-
- if (_cpuNumber == 0) return kIOReturnUnsupported;
-
- if (stateStr->isEqualTo("running")) {
- if (_cpuState == kIOCPUStateStopped) {
- processor_start(machProcessor);
- } else if (_cpuState != kIOCPUStateRunning) {
return kIOReturnUnsupported;
- }
- } else if (stateStr->isEqualTo("stopped")) {
- if (_cpuState == kIOCPUStateRunning) {
- haltCPU();
- } else if (_cpuState != kIOCPUStateStopped) {
- return kIOReturnUnsupported;
- }
- } else return kIOReturnUnsupported;
-
- return kIOReturnSuccess;
- }
-
- return kIOReturnUnsupported;
}
-void IOCPU::signalCPU(IOCPU */*target*/)
+void
+IOCPU::signalCPU(IOCPU */*target*/)
{
}
-void IOCPU::enableCPUTimeBase(bool /*enable*/)
+void
+IOCPU::signalCPUDeferred(IOCPU *target)
{
+ // Our CPU may not support deferred IPIs,
+ // so send a regular IPI by default
+ signalCPU(target);
}
-UInt32 IOCPU::getCPUNumber(void)
+void
+IOCPU::signalCPUCancel(IOCPU */*target*/)
{
- return _cpuNumber;
+ // Meant to cancel signals sent by
+ // signalCPUDeferred; unsupported
+ // by default
}
-void IOCPU::setCPUNumber(UInt32 cpuNumber)
+void
+IOCPU::enableCPUTimeBase(bool /*enable*/)
{
- _cpuNumber = cpuNumber;
- setProperty("IOCPUNumber", _cpuNumber, 32);
}
-UInt32 IOCPU::getCPUState(void)
+UInt32
+IOCPU::getCPUNumber(void)
{
- return _cpuState;
+ return _cpuNumber;
}
-void IOCPU::setCPUState(UInt32 cpuState)
+void
+IOCPU::setCPUNumber(UInt32 cpuNumber)
{
- if ((cpuState >= 0) && (cpuState < kIOCPUStateCount)) {
- _cpuState = cpuState;
- setProperty(gIOCPUStateKey, gIOCPUStateNames[cpuState]);
- }
+ _cpuNumber = cpuNumber;
+ super::setProperty("IOCPUNumber", _cpuNumber, 32);
}
-OSArray *IOCPU::getCPUGroup(void)
+UInt32
+IOCPU::getCPUState(void)
{
- return _cpuGroup;
+ return _cpuState;
}
-UInt32 IOCPU::getCPUGroupSize(void)
+void
+IOCPU::setCPUState(UInt32 cpuState)
{
- return _cpuGroup->getCount();
+ if (cpuState < kIOCPUStateCount) {
+ _cpuState = cpuState;
+ }
}
-processor_t IOCPU::getMachProcessor(void)
+OSArray *
+IOCPU::getCPUGroup(void)
{
- return machProcessor;
+ return _cpuGroup;
+}
+
+UInt32
+IOCPU::getCPUGroupSize(void)
+{
+ return _cpuGroup->getCount();
+}
+
+processor_t
+IOCPU::getMachProcessor(void)
+{
+ 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 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;
- }
- }
-
- 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;
-
- // 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)
-{
- ml_install_interrupt_handler(cpu, cpu->getCPUNumber(), this,
- (IOInterruptHandler)&IOCPUInterruptController::handleInterrupt, 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*/)
+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_init_max_cpus(numSources);
+
+#if KPERF
+ /*
+ * kperf allocates based on the number of CPUs and requires them to all be
+ * accounted for.
+ */
+ boolean_t found_kperf = FALSE;
+ char kperf_config_str[64];
+ found_kperf = PE_parse_boot_arg_str("kperf", kperf_config_str, sizeof(kperf_config_str));
+ if (found_kperf && kperf_config_str[0] != '\0') {
+ kperf_kernel_configure(kperf_config_str);
+ }
+#endif /* KPERF */
+
+ 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) != NULL) &&
+ (service->getProperty(gIOInterruptSpecifiersKey) != NULL)) {
+ return;
+ }
+
+ // Create the interrupt specifer array.
+ specifier = OSArray::withCapacity(numSources);
+ for (cnt = 0; cnt < numSources; cnt++) {
+ tmpLong = cnt;
+ tmpData = OSData::withBytes(&tmpLong, sizeof(tmpLong));
+ specifier->setObject(tmpData);
+ tmpData->release();
+ }
+ ;
+
+ // 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);
+ service->setProperty(gIOInterruptSpecifiersKey, specifier);
+ controller->release();
+ specifier->release();
+}
+
+void
+IOCPUInterruptController::enableCPUInterrupt(IOCPU *cpu)
+{
+ IOInterruptHandler handler = OSMemberFunctionCast(
+ IOInterruptHandler, this, &IOCPUInterruptController::handleInterrupt);
+
+ 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