/*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2009 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>
+#include <machine/commpage.h>
+
+#if HIBERNATION
+#include <IOKit/IOHibernatePrivate.h>
+#endif
+#include <IOKit/IOPlatformExpert.h>
+
+#if CONFIG_DTRACE
+extern void (*dtrace_cpu_state_changed_hook)(int, boolean_t);
+#endif
/*
* 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);
+ pset = processor->processor_set;
+ pset_lock(pset);
+ ++pset->online_processor_count;
enqueue_tail(&pset->active_queue, (queue_entry_t)processor);
- processor->deadline = UINT64_MAX;
processor->state = PROCESSOR_RUNNING;
- simple_unlock(&pset->sched_lock);
- processor_unlock(processor);
+ (void)hw_atomic_add(&processor_avail_count, 1);
+ commpage_update_active_cpus();
+ pset_unlock(pset);
+ ml_cpu_up();
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);
- splx(s);
+#if CONFIG_DTRACE
+ if (dtrace_cpu_state_changed_hook)
+ (*dtrace_cpu_state_changed_hook)(processor->cpu_id, TRUE);
+#endif
}
+#include <atm/atm_internal.h>
kern_return_t
host_reboot(
assert(host_priv == &realhost);
+#if DEVELOPMENT || DEBUG
if (options & HOST_REBOOT_DEBUGGER) {
Debugger("Debugger");
return (KERN_SUCCESS);
}
+#endif
- 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);
+ splx(s);
+ delay(1);
+ s = splsched();
+ 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);
- if (processor->state == PROCESSOR_IDLE) {
- remqueue(&pset->idle_queue, (queue_entry_t)processor);
- pset->idle_count--;
+ return (KERN_SUCCESS);
}
+
+ if (processor->state == PROCESSOR_IDLE)
+ remqueue((queue_entry_t)processor);
else
if (processor->state == PROCESSOR_RUNNING)
- remqueue(&pset->active_queue, (queue_entry_t)processor);
- else
- panic("processor_request_action");
+ remqueue((queue_entry_t)processor);
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->cpu_id);
return (KERN_SUCCESS);
}
/*
- * Called at splsched.
+ * Called with interrupts disabled.
*/
void
processor_doshutdown(
processor_t processor)
{
thread_t old_thread, self = current_thread();
- processor_set_t pset;
processor_t prev;
+ processor_set_t pset;
/*
* 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 (pset->processor_count == 1) {
- thread_t thread;
- extern void start_cpu_thread(void);
-
- simple_unlock(&pset->sched_lock);
- processor_unlock(processor);
+ assert(processor->state == PROCESSOR_SHUTDOWN);
- /*
- * Create the thread, and point it at the routine.
- */
- thread = kernel_thread_create(start_cpu_thread, MAXPRI_KERNEL);
+#if CONFIG_DTRACE
+ if (dtrace_cpu_state_changed_hook)
+ (*dtrace_cpu_state_changed_hook)(processor->cpu_id, FALSE);
+#endif
- thread_lock(thread);
- machine_wake_thread = thread;
- thread->state = TH_RUN;
- pset_run_incr(thread->processor_set);
- thread_unlock(thread);
+ ml_cpu_down();
- processor_lock(processor);
- simple_lock(&pset->sched_lock);
+#if HIBERNATION
+ if (processor_avail_count < 2) {
+ hibernate_vm_lock();
+ hibernate_vm_unlock();
}
+#endif
- assert(processor->state == PROCESSOR_SHUTDOWN);
-
- pset_remove_processor(pset, processor);
- simple_unlock(&pset->sched_lock);
- processor_unlock(processor);
+ pset = processor->processor_set;
+ pset_lock(pset);
+ processor->state = PROCESSOR_OFF_LINE;
+ --pset->online_processor_count;
+ (void)hw_atomic_sub(&processor_avail_count, 1);
+ commpage_update_active_cpus();
+ SCHED(processor_queue_shutdown)(processor);
+ /* pset lock dropped */
/*
- * Clean up.
+ * Continue processor shutdown in shutdown context.
+ *
+ * We save the current context in machine_processor_shutdown in such a way
+ * that when this thread is next invoked it will return from here instead of
+ * from the machine_switch_context() in thread_invoke like a normal context switch.
+ *
+ * As such, 'old_thread' is neither the idle thread nor the current thread - it's whatever
+ * thread invoked back to this one. (Usually, it's another processor's idle thread.)
+ *
+ * TODO: Make this a real thread_run of the idle_thread, so we don't have to keep this in sync
+ * with thread_invoke.
*/
- thread_bind(self, prev);
- old_thread = switch_to_shutdown_context(self,
- processor_offline, processor);
- if (processor != current_processor())
- timer_call_shutdown(processor);
-
- _mk_sp_thread_begin(self, self->last_processor);
+ thread_bind(prev);
+ old_thread = machine_processor_shutdown(self, processor_offline, processor);
- thread_dispatch(old_thread);
+ thread_dispatch(old_thread, self);
}
/*
- * 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.
+ * This performs a minimal thread_invoke() to the idle thread,
+ * so it needs to be kept in sync with what thread_invoke() does.
+ *
+ * The onlining half of this is done in load_context().
*/
-
void
processor_offline(
- processor_t processor)
+ processor_t processor)
{
- register thread_t old_thread = processor->active_thread;
- register int cpu = processor->slot_num;
+ assert(processor == current_processor());
+ assert(processor->active_thread == current_thread());
- 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);
+ thread_t old_thread = processor->active_thread;
+ thread_t new_thread = processor->idle_thread;
+
+ processor->active_thread = new_thread;
+ processor->current_pri = IDLEPRI;
+ processor->current_thmode = TH_MODE_NONE;
+ processor->starting_pri = IDLEPRI;
+ processor->current_sfi_class = SFI_CLASS_KERNEL;
+ processor->deadline = UINT64_MAX;
+ new_thread->last_processor = processor;
+
+ uint64_t ctime = mach_absolute_time();
+
+ processor->last_dispatch = ctime;
+ old_thread->last_run_time = ctime;
+
+ /* Update processor->thread_timer and ->kernel_timer to point to the new thread */
+ thread_timer_event(ctime, &new_thread->system_timer);
+ PROCESSOR_DATA(processor, kernel_timer) = &new_thread->system_timer;
+
+ timer_stop(PROCESSOR_DATA(processor, current_state), ctime);
+
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
+ MACHDBG_CODE(DBG_MACH_SCHED, MACH_SCHED) | DBG_FUNC_NONE,
+ old_thread->reason, (uintptr_t)thread_tid(new_thread),
+ old_thread->sched_pri, new_thread->sched_pri, 0);
+
+ machine_set_current_thread(new_thread);
+
+ thread_dispatch(old_thread, new_thread);
+
+ PMAP_DEACTIVATE_KERNEL(processor->cpu_id);
- /*
- * 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);
return (KERN_SUCCESS);
}
+
+#if CONFIG_DTRACE
+#include <mach/sdt.h>
+#endif
+
+unsigned long long ml_io_read(uintptr_t vaddr, int size) {
+ unsigned long long result = 0;
+ unsigned char s1;
+ unsigned short s2;
+
+#if defined(__x86_64__)
+ uint64_t sabs, eabs;
+ boolean_t istate, timeread = FALSE;
+#if DEVELOPMENT || DEBUG
+ pmap_verify_noncacheable(vaddr);
+#endif /* x86_64 DEVELOPMENT || DEBUG */
+ if (__improbable(reportphyreaddelayabs != 0)) {
+ istate = ml_set_interrupts_enabled(FALSE);
+ sabs = mach_absolute_time();
+ timeread = TRUE;
+ }
+#endif /* x86_64 */
+
+ switch (size) {
+ case 1:
+ s1 = *(volatile unsigned char *)vaddr;
+ result = s1;
+ break;
+ case 2:
+ s2 = *(volatile unsigned short *)vaddr;
+ result = s2;
+ break;
+ case 4:
+ result = *(volatile unsigned int *)vaddr;
+ break;
+ case 8:
+ result = *(volatile unsigned long long *)vaddr;
+ break;
+ default:
+ panic("Invalid size %d for ml_io_read(%p)\n", size, (void *)vaddr);
+ break;
+ }
+
+#if defined(__x86_64__)
+ if (__improbable(timeread == TRUE)) {
+ eabs = mach_absolute_time();
+ (void)ml_set_interrupts_enabled(istate);
+
+ if (__improbable((eabs - sabs) > reportphyreaddelayabs)) {
+ if (phyreadpanic) {
+ panic("Read from IO virtual addr 0x%lx took %llu ns, result: 0x%llx (start: %llu, end: %llu), ceiling: %llu", vaddr, (eabs - sabs), result, sabs, eabs, reportphyreaddelayabs);
+ }
+#if CONFIG_DTRACE
+ DTRACE_PHYSLAT3(physread, uint64_t, (eabs - sabs),
+ uint64_t, vaddr, uint32_t, size);
+#endif /* CONFIG_DTRACE */
+ }
+ }
+#endif /* x86_64 */
+ return result;
+}
+
+unsigned int ml_io_read8(uintptr_t vaddr) {
+ return (unsigned) ml_io_read(vaddr, 1);
+}
+
+unsigned int ml_io_read16(uintptr_t vaddr) {
+ return (unsigned) ml_io_read(vaddr, 2);
+}
+
+unsigned int ml_io_read32(uintptr_t vaddr) {
+ return (unsigned) ml_io_read(vaddr, 4);
+}
+
+unsigned long long ml_io_read64(uintptr_t vaddr) {
+ return ml_io_read(vaddr, 8);
+}
projects / apple / xnu.git / blobdiff