/*
* processor_up:
*
* Flag processor as up and running, and available
* for scheduling.
*/
void
processor_up(
processor_t processor)
{
processor_set_t pset;
spl_t s;
s = splsched();
init_ast_check(processor);
pset = processor->processor_set;
pset_lock(pset);
++pset->online_processor_count;
enqueue_tail(&pset->active_queue, (queue_entry_t)processor);
processor->state = PROCESSOR_RUNNING;
(void)hw_atomic_add(&processor_avail_count, 1);
commpage_update_active_cpus();
pset_unlock(pset);
ml_cpu_up();
splx(s);
#if CONFIG_DTRACE
if (dtrace_cpu_state_changed_hook)
(*dtrace_cpu_state_changed_hook)(processor->cpu_id, TRUE);
#endif
}
/*
* Called with interrupts disabled.
*/
void
processor_doshutdown(
processor_t processor)
{
thread_t old_thread, self = current_thread();
processor_t prev;
processor_set_t pset;
/*
* Get onto the processor to shutdown
*/
prev = thread_bind(processor);
thread_block(THREAD_CONTINUE_NULL);
assert(processor->state == PROCESSOR_SHUTDOWN);
#if CONFIG_DTRACE
if (dtrace_cpu_state_changed_hook)
(*dtrace_cpu_state_changed_hook)(processor->cpu_id, FALSE);
#endif
ml_cpu_down();
#if HIBERNATION
if (processor_avail_count < 2) {
hibernate_vm_lock();
hibernate_vm_unlock();
}
#endif
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 */
/*
* 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(prev);
old_thread = machine_processor_shutdown(self, processor_offline, processor);
thread_dispatch(old_thread, self);
}
/*
* Called with interrupts disabled.
*/
void
processor_doshutdown(
processor_t processor)
{
thread_t old_thread, self = current_thread();
processor_t prev;
processor_set_t pset;
/*
* Get onto the processor to shutdown
*/
prev = thread_bind(processor);
thread_block(THREAD_CONTINUE_NULL);
assert(processor->state == PROCESSOR_SHUTDOWN);
#if CONFIG_DTRACE
if (dtrace_cpu_state_changed_hook)
(*dtrace_cpu_state_changed_hook)(processor->cpu_id, FALSE);
#endif
ml_cpu_down();
#if HIBERNATION
if (processor_avail_count < 2) {
hibernate_vm_lock();
hibernate_vm_unlock();
}
#endif
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 */
/*
* Continue processor shutdown in shutdown context.
*/
thread_bind(prev);
old_thread = machine_processor_shutdown(self, processor_offline, processor);
thread_dispatch(old_thread, self);
}
void
commpage_populate( void )
{
commpage_init_cpu_capabilities();
commpage_populate_one( commpage32_map,
&commPagePtr32,
_COMM_PAGE32_AREA_USED,
_COMM_PAGE32_BASE_ADDRESS,
&time_data32,
"commpage 32-bit",
VM_PROT_READ);
#ifndef __LP64__
pmap_commpage32_init((vm_offset_t) commPagePtr32, _COMM_PAGE32_BASE_ADDRESS,
_COMM_PAGE32_AREA_USED/INTEL_PGBYTES);
#endif
time_data64 = time_data32; /* if no 64-bit commpage, point to 32-bit */
if (_cpu_capabilities & k64Bit) {
commpage_populate_one( commpage64_map,
&commPagePtr64,
_COMM_PAGE64_AREA_USED,
_COMM_PAGE32_START_ADDRESS, /* commpage address are relative to 32-bit commpage placement */
&time_data64,
"commpage 64-bit",
VM_PROT_READ);
#ifndef __LP64__
pmap_commpage64_init((vm_offset_t) commPagePtr64, _COMM_PAGE64_BASE_ADDRESS,
_COMM_PAGE64_AREA_USED/INTEL_PGBYTES);
#endif
}
simple_lock_init(&commpage_active_cpus_lock, 0);
commpage_update_active_cpus();
commpage_mach_approximate_time_init();
commpage_mach_continuous_time_init();
commpage_boottime_init();
rtc_nanotime_init_commpage();
commpage_update_kdebug_state();
#if CONFIG_ATM
commpage_update_atm_diagnostic_config(atm_get_diagnostic_config());
#endif
}
