/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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 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.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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.
+ * 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_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
* Support for machine independent machine abstraction.
*/
-#include <cpus.h>
-
#include <string.h>
+
+#include <mach/mach_types.h>
#include <mach/boolean.h>
#include <mach/kern_return.h>
-#include <mach/mach_types.h>
#include <mach/machine.h>
#include <mach/host_info.h>
#include <mach/host_reboot.h>
+#include <mach/host_priv_server.h>
+#include <mach/processor_server.h>
+
+#include <kern/kern_types.h>
#include <kern/counters.h>
#include <kern/cpu_data.h>
#include <kern/ipc_host.h>
#include <kern/host.h>
#include <kern/lock.h>
#include <kern/machine.h>
+#include <kern/misc_protos.h>
#include <kern/processor.h>
#include <kern/queue.h>
#include <kern/sched.h>
#include <kern/task.h>
#include <kern/thread.h>
-#include <kern/thread_swap.h>
-#include <kern/misc_protos.h>
-#include <kern/mk_sp.h>
+#if HIBERNATION
+#include <IOKit/IOHibernatePrivate.h>
+#endif
+#include <IOKit/IOPlatformExpert.h>
/*
* Exported variables:
*/
struct machine_info machine_info;
-struct machine_slot machine_slot[NCPUS];
-
-thread_t machine_wake_thread;
/* Forwards */
void processor_doshutdown(
processor_t processor);
/*
- * cpu_up:
+ * processor_up:
*
- * Flag specified cpu as up and running. Called when a processor comes
- * online.
+ * Flag processor as up and running, and available
+ * for scheduling.
*/
void
-cpu_up(
- int cpu)
+processor_up(
+ processor_t processor)
{
- processor_t processor = cpu_to_processor(cpu);
- processor_set_t pset = &default_pset;
- struct machine_slot *ms;
- spl_t s;
+ processor_set_t pset;
+ spl_t s;
s = splsched();
- processor_lock(processor);
init_ast_check(processor);
- ms = &machine_slot[cpu];
- ms->running = TRUE;
- machine_info.avail_cpus++;
- simple_lock(&pset->sched_lock);
- pset_add_processor(pset, processor);
- enqueue_tail(&pset->active_queue, (queue_entry_t)processor);
- processor->deadline = UINT64_MAX;
+ pset = processor->processor_set;
+ pset_lock(pset);
+ pset->processor_count++;
+ enqueue_head(&pset->active_queue, (queue_entry_t)processor);
processor->state = PROCESSOR_RUNNING;
- simple_unlock(&pset->sched_lock);
- processor_unlock(processor);
- splx(s);
-}
-
-/*
- * cpu_down:
- *
- * Flag specified cpu as down. Called when a processor is about to
- * go offline.
- */
-void
-cpu_down(
- int cpu)
-{
- processor_t processor;
- struct machine_slot *ms;
- spl_t s;
-
- processor = cpu_to_processor(cpu);
-
- s = splsched();
- processor_lock(processor);
- ms = &machine_slot[cpu];
- ms->running = FALSE;
- machine_info.avail_cpus--;
- /*
- * processor has already been removed from pset.
- */
- processor->state = PROCESSOR_OFF_LINE;
- processor_unlock(processor);
+ (void)hw_atomic_add(&processor_avail_count, 1);
+ pset_unlock(pset);
+ ml_cpu_up();
splx(s);
}
return (KERN_SUCCESS);
}
- halt_all_cpus(!(options & HOST_REBOOT_HALT));
+ if (options & HOST_REBOOT_UPSDELAY) {
+ // UPS power cutoff path
+ PEHaltRestart( kPEUPSDelayHaltCPU );
+ } else {
+ halt_all_cpus(!(options & HOST_REBOOT_HALT));
+ }
return (KERN_SUCCESS);
}
kern_return_t
processor_assign(
- processor_t processor,
- processor_set_t new_pset,
- boolean_t wait)
+ __unused processor_t processor,
+ __unused processor_set_t new_pset,
+ __unused boolean_t wait)
{
-#ifdef lint
- processor++; new_pset++; wait++;
-#endif /* lint */
return (KERN_FAILURE);
}
spl_t s;
s = splsched();
- processor_lock(processor);
- if ( processor->state == PROCESSOR_OFF_LINE ||
- processor->state == PROCESSOR_SHUTDOWN ) {
+ pset = processor->processor_set;
+ pset_lock(pset);
+ if (processor->state == PROCESSOR_OFF_LINE) {
/*
- * Success if already shutdown or being shutdown.
+ * Success if already shutdown.
*/
- processor_unlock(processor);
+ pset_unlock(pset);
splx(s);
return (KERN_SUCCESS);
/*
* Failure if currently being started.
*/
- processor_unlock(processor);
+ pset_unlock(pset);
splx(s);
return (KERN_FAILURE);
}
/*
- * Processor must be in a processor set. Must lock the scheduling
- * lock to get at the processor state.
+ * If the processor is dispatching, let it finish.
*/
- pset = processor->processor_set;
- simple_lock(&pset->sched_lock);
+ while (processor->state == PROCESSOR_DISPATCHING) {
+ pset_unlock(pset);
+ delay(1);
+ pset_lock(pset);
+ }
/*
- * If the processor is dispatching, let it finish - it will set its
- * state to running very soon.
+ * Success if already being shutdown.
*/
- while (*(volatile int *)&processor->state == PROCESSOR_DISPATCHING) {
- simple_unlock(&pset->sched_lock);
- delay(1);
- simple_lock(&pset->sched_lock);
+ if (processor->state == PROCESSOR_SHUTDOWN) {
+ pset_unlock(pset);
+ splx(s);
+
+ return (KERN_SUCCESS);
}
if (processor->state == PROCESSOR_IDLE) {
if (processor->state == PROCESSOR_RUNNING)
remqueue(&pset->active_queue, (queue_entry_t)processor);
else
- panic("processor_request_action");
+ panic("processor_shutdown");
processor->state = PROCESSOR_SHUTDOWN;
- simple_unlock(&pset->sched_lock);
-
- processor_unlock(processor);
+ pset_unlock(pset);
processor_doshutdown(processor);
splx(s);
-#ifdef __ppc__
- cpu_exit_wait(processor->slot_num);
-#endif
+ cpu_exit_wait(PROCESSOR_DATA(processor, slot_num));
return (KERN_SUCCESS);
}
processor_t processor)
{
thread_t old_thread, self = current_thread();
- processor_set_t pset;
processor_t prev;
/*
* Get onto the processor to shutdown
*/
- prev = thread_bind(self, processor);
+ prev = thread_bind(processor);
thread_block(THREAD_CONTINUE_NULL);
- processor_lock(processor);
- pset = processor->processor_set;
- simple_lock(&pset->sched_lock);
+#if HIBERNATION
+ if (processor_avail_count < 2)
+ hibernate_vm_lock();
+#endif
- if (pset->processor_count == 1) {
- thread_t thread;
- extern void start_cpu_thread(void);
+ assert(processor->state == PROCESSOR_SHUTDOWN);
- simple_unlock(&pset->sched_lock);
- processor_unlock(processor);
+#if HIBERNATION
+ if (processor_avail_count < 2)
+ hibernate_vm_unlock();
+#endif
- /*
- * Create the thread, and point it at the routine.
- */
- thread = kernel_thread_create(start_cpu_thread, MAXPRI_KERNEL);
+ /*
+ * Continue processor shutdown in shutdown context.
+ */
+ thread_bind(prev);
+ old_thread = machine_processor_shutdown(self, processor_offline, processor);
- thread_lock(thread);
- machine_wake_thread = thread;
- thread->state = TH_RUN;
- pset_run_incr(thread->processor_set);
- thread_unlock(thread);
+ thread_dispatch(old_thread, self);
- processor_lock(processor);
- simple_lock(&pset->sched_lock);
- }
+ /*
+ * If we just shutdown another processor, move any
+ * threads and timer call outs to the current processor.
+ */
+ if (processor != current_processor()) {
+ processor_set_t pset = processor->processor_set;
- assert(processor->state == PROCESSOR_SHUTDOWN);
+ pset_lock(pset);
- pset_remove_processor(pset, processor);
- simple_unlock(&pset->sched_lock);
- processor_unlock(processor);
+ if (processor->state == PROCESSOR_OFF_LINE || processor->state == PROCESSOR_SHUTDOWN) {
+ timer_call_shutdown(processor);
+ processor_queue_shutdown(processor);
+ return;
+ }
- /*
- * Clean up.
- */
- thread_bind(self, prev);
- old_thread = switch_to_shutdown_context(self,
- processor_offline, processor);
- if (processor != current_processor())
- timer_call_shutdown(processor);
- thread_dispatch(old_thread);
+ pset_unlock(pset);
+ }
}
/*
- * Actually do the processor shutdown. This is called at splsched,
- * running on the processor's shutdown stack.
+ * Complete the shutdown and place the processor offline.
+ *
+ * Called at splsched in the shutdown context.
*/
-
void
processor_offline(
- processor_t processor)
+ processor_t processor)
{
- register thread_t old_thread = processor->active_thread;
- register int cpu = processor->slot_num;
+ thread_t new_thread, old_thread = processor->active_thread;
+ processor_set_t pset;
- timer_call_cancel(&processor->quantum_timer);
- timer_switch(&kernel_timer[cpu]);
- processor->active_thread = processor->idle_thread;
- machine_thread_set_current(processor->active_thread);
- thread_dispatch(old_thread);
+ new_thread = processor->idle_thread;
+ processor->active_thread = new_thread;
+ processor->current_pri = IDLEPRI;
+ processor->deadline = UINT64_MAX;
+ new_thread->last_processor = processor;
+
+ processor->last_dispatch = mach_absolute_time();
+ timer_stop(PROCESSOR_DATA(processor, thread_timer), processor->last_dispatch);
+
+ machine_set_current_thread(new_thread);
+
+ thread_dispatch(old_thread, new_thread);
+
+ PMAP_DEACTIVATE_KERNEL(PROCESSOR_DATA(processor, slot_num));
+
+ pset = processor->processor_set;
+ pset_lock(pset);
+ pset->processor_count--;
+ processor->state = PROCESSOR_OFF_LINE;
+ if (processor == pset->low_hint)
+ pset->low_hint = PROCESSOR_NULL;
+ (void)hw_atomic_sub(&processor_avail_count, 1);
+ pset_unlock(pset);
+ ml_cpu_down();
- /*
- * OK, now exit this cpu.
- */
- PMAP_DEACTIVATE_KERNEL(cpu);
- cpu_down(cpu);
cpu_sleep();
panic("zombie processor");
/*NOTREACHED*/
host_priv_t host_priv,
kernel_boot_info_t boot_info)
{
- char *src = "";
- extern char *machine_boot_info(
- kernel_boot_info_t boot_info,
- vm_size_t buf_len);
-
+ const char *src = "";
if (host_priv == HOST_PRIV_NULL)
return (KERN_INVALID_HOST);
projects / apple / xnu.git / blobdiff