#include <kern/pms.h>
#include <kern/processor.h>
#include <kern/etimer.h>
-#include <sys/kdebug.h>
#include <i386/cpu_threads.h>
#include <i386/pmCPU.h>
#include <i386/cpuid.h>
-#include <i386/rtclock.h>
+#include <i386/rtclock_protos.h>
#include <kern/sched_prim.h>
#include <i386/lapic.h>
+#include <i386/pal_routines.h>
+
+#include <sys/kdebug.h>
extern int disableConsoleOutput;
/*
* The following is set when the KEXT loads and initializes.
*/
-pmDispatch_t *pmDispatch = NULL;
+pmDispatch_t *pmDispatch = NULL;
static uint32_t pmInitDone = 0;
static boolean_t earlyTopology = FALSE;
* cause problems in some MP configurations w.r.t. the APIC
* stopping during a GV3 transition).
*/
- __asm__ volatile ("sti; hlt");
+ pal_hlt();
+
+ /* Once woken, re-disable interrupts. */
+ pal_cli();
}
/*
* Re-enable interrupts.
*/
out:
- __asm__ volatile("sti");
+ pal_sti();
}
/*
switch (reason) {
case PM_HALT_DEBUG:
cpup->lcpu.state = LCPU_PAUSE;
- __asm__ volatile ("wbinvd; hlt");
+ pal_stop_cpu(FALSE);
break;
case PM_HALT_PANIC:
cpup->lcpu.state = LCPU_PAUSE;
- __asm__ volatile ("cli; wbinvd; hlt");
+ pal_stop_cpu(TRUE);
break;
case PM_HALT_NORMAL:
default:
- __asm__ volatile ("cli");
+ pal_cli();
- if (pmInitDone
+ if (pmInitDone
&& pmDispatch != NULL
&& pmDispatch->pmCPUHalt != NULL) {
/*
i386_init_slave_fast();
panic("init_slave_fast returned");
- } else {
+ } else
+ {
/*
* If no power managment and a processor is taken off-line,
* then invalidate the cache and halt it (it will not be able
*/
__asm__ volatile ("wbinvd");
cpup->lcpu.state = LCPU_HALT;
- __asm__ volatile ( "wbinvd; hlt" );
+ pal_stop_cpu(FALSE);
panic("back from Halt");
}
+
break;
}
}
/*
* Called to get the next deadline that has been set by the
* power management code.
+ * Note: a return of 0 from AICPM and this routine signifies
+ * that no deadline is set.
*/
uint64_t
pmCPUGetDeadline(cpu_data_t *cpu)
{
uint64_t deadline = 0;
- if (pmInitDone
+ if (pmInitDone
&& pmDispatch != NULL
&& pmDispatch->GetDeadline != NULL)
deadline = (*pmDispatch->GetDeadline)(&cpu->lcpu);
pmDispatch->setMaxIntDelay(mdelay);
}
+boolean_t
+ml_get_interrupt_prewake_applicable()
+{
+ boolean_t applicable = FALSE;
+
+ if (pmInitDone
+ && pmDispatch != NULL
+ && pmDispatch->pmInterruptPrewakeApplicable != NULL)
+ applicable = pmDispatch->pmInterruptPrewakeApplicable();
+
+ return applicable;
+}
+
/*
* Put a CPU into "safe" mode with respect to power.
*
}
static int
-pmThreadGetUrgency(__unused uint64_t *rt_period, __unused uint64_t *rt_deadline)
+pmThreadGetUrgency(uint64_t *rt_period, uint64_t *rt_deadline)
{
- return(0);
+ return(thread_get_urgency(rt_period, rt_deadline));
}
+#if DEBUG
+uint32_t urgency_stats[64][THREAD_URGENCY_MAX];
+#endif
+
+#define URGENCY_NOTIFICATION_ASSERT_NS (5 * 1000 * 1000)
+uint64_t urgency_notification_assert_abstime_threshold, urgency_notification_max_recorded;
+
void
thread_tell_urgency(int urgency,
- uint64_t rt_period,
- uint64_t rt_deadline)
-{
- KERNEL_DEBUG_CONSTANT(0x1400054,
- urgency, rt_period, (rt_deadline >> 32), rt_deadline, 0);
-
- if (!pmInitDone
- || pmDispatch == NULL
- || pmDispatch->pmThreadTellUrgency == NULL)
- return;
+ uint64_t rt_period,
+ uint64_t rt_deadline)
+{
+ uint64_t urgency_notification_time_start, delta;
+ boolean_t urgency_assert = (urgency_notification_assert_abstime_threshold != 0);
+ assert(get_preemption_level() > 0 || ml_get_interrupts_enabled() == FALSE);
+#if DEBUG
+ urgency_stats[cpu_number() % 64][urgency]++;
+#endif
+ if (!pmInitDone
+ || pmDispatch == NULL
+ || pmDispatch->pmThreadTellUrgency == NULL)
+ return;
+
+ KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED,MACH_URGENCY) | DBG_FUNC_START, urgency, rt_period, (rt_deadline >> 32), rt_deadline, 0);
+
+ if (__improbable((urgency_assert == TRUE)))
+ urgency_notification_time_start = mach_absolute_time();
+
+ pmDispatch->pmThreadTellUrgency(urgency, rt_period, rt_deadline);
+
+ if (__improbable((urgency_assert == TRUE))) {
+ delta = mach_absolute_time() - urgency_notification_time_start;
+
+ if (__improbable(delta > urgency_notification_max_recorded)) {
+ /* This is not synchronized, but it doesn't matter
+ * if we (rarely) miss an event, as it is statistically
+ * unlikely that it will never recur.
+ */
+ urgency_notification_max_recorded = delta;
+
+ if (__improbable((delta > urgency_notification_assert_abstime_threshold) && !machine_timeout_suspended()))
+ panic("Urgency notification callout %p exceeded threshold, 0x%llx abstime units", pmDispatch->pmThreadTellUrgency, delta);
+ }
+ }
- pmDispatch->pmThreadTellUrgency(urgency, rt_period, rt_deadline);
+ KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED,MACH_URGENCY) | DBG_FUNC_END, urgency, rt_period, (rt_deadline >> 32), rt_deadline, 0);
}
void
* Make sure that nanotime didn't change while we were reading it.
*/
do {
- rtc_nanotime->generation = rtc_nanotime_info.generation; /* must be first */
- rtc_nanotime->tsc_base = rtc_nanotime_info.tsc_base;
- rtc_nanotime->ns_base = rtc_nanotime_info.ns_base;
- rtc_nanotime->scale = rtc_nanotime_info.scale;
- rtc_nanotime->shift = rtc_nanotime_info.shift;
- } while(rtc_nanotime_info.generation != 0
- && rtc_nanotime->generation != rtc_nanotime_info.generation);
+ rtc_nanotime->generation = pal_rtc_nanotime_info.generation; /* must be first */
+ rtc_nanotime->tsc_base = pal_rtc_nanotime_info.tsc_base;
+ rtc_nanotime->ns_base = pal_rtc_nanotime_info.ns_base;
+ rtc_nanotime->scale = pal_rtc_nanotime_info.scale;
+ rtc_nanotime->shift = pal_rtc_nanotime_info.shift;
+ } while(pal_rtc_nanotime_info.generation != 0
+ && rtc_nanotime->generation != pal_rtc_nanotime_info.generation);
}
static uint32_t
-pmTimerQueueMigrate(__unused int target_cpu)
+pmTimerQueueMigrate(int target_cpu)
{
- return (0);
+ /* Call the etimer code to do this. */
+ return (target_cpu != cpu_number())
+ ? etimer_queue_migrate(target_cpu)
+ : 0;
}
+
/*
* Called by the power management kext to register itself and to get the
* callbacks it might need into other kernel functions. This interface
callbacks->LCPUtoProcessor = pmLCPUtoProcessor;
callbacks->ThreadBind = thread_bind;
callbacks->GetSavedRunCount = pmGetSavedRunCount;
- callbacks->pmSendIPI = pmSendIPI;
callbacks->GetNanotimeInfo = pmGetNanotimeInfo;
callbacks->ThreadGetUrgency = pmThreadGetUrgency;
callbacks->RTCClockAdjust = rtc_clock_adjust;
callbacks->timerQueueMigrate = pmTimerQueueMigrate;
callbacks->topoParms = &topoParms;
+ callbacks->pmSendIPI = pmSendIPI;
callbacks->InterruptPending = lapic_is_interrupt_pending;
callbacks->IsInterrupting = lapic_is_interrupting;
callbacks->InterruptStats = lapic_interrupt_counts;
callbacks->DisableApicTimer = lapic_disable_timer;
} else {
- panic("Version mis-match between Kernel (%d) and CPU PM (%d)",
- PM_DISPATCH_VERSION, version);
+ panic("Version mis-match between Kernel and CPU PM");
}
if (cpuFuncs != NULL) {
projects / apple / xnu.git / blobdiff