/*
- * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
+#include <i386/pmap.h>
+#include <i386/proc_reg.h>
+#include <i386/mp_desc.h>
#include <i386/misc_protos.h>
+#include <i386/mp.h>
#include <i386/cpu_data.h>
-#include <i386/proc_reg.h>
-#include <i386/pmap.h>
+#if CONFIG_MTRR
#include <i386/mtrr.h>
+#endif
+#if HYPERVISOR
+#include <kern/hv_support.h>
+#endif
+#if CONFIG_VMX
#include <i386/vmx/vmx_cpu.h>
+#endif
+#include <i386/ucode.h>
#include <i386/acpi.h>
#include <i386/fpu.h>
#include <i386/lapic.h>
#include <i386/mp.h>
#include <i386/mp_desc.h>
#include <i386/serial_io.h>
+#if CONFIG_MCA
#include <i386/machine_check.h>
+#endif
#include <i386/pmCPU.h>
+#include <i386/tsc.h>
+
#include <kern/cpu_data.h>
+#include <kern/machine.h>
+#include <kern/timer_queue.h>
#include <console/serial_protos.h>
+#include <machine/pal_routines.h>
+#include <vm/vm_page.h>
#if HIBERNATION
#include <IOKit/IOHibernatePrivate.h>
#endif
#include <IOKit/IOPlatformExpert.h>
+#include <sys/kdebug.h>
-extern void acpi_sleep_cpu(acpi_sleep_callback, void * refcon);
-extern char acpi_wake_start[];
-extern char acpi_wake_end[];
+#if MONOTONIC
+#include <kern/monotonic.h>
+#endif /* MONOTONIC */
-extern void set_kbd_leds(int leds);
+#if CONFIG_SLEEP
+extern void acpi_sleep_cpu(acpi_sleep_callback, void * refcon);
+extern void acpi_wake_prot(void);
+#endif
+extern kern_return_t IOCPURunPlatformQuiesceActions(void);
+extern kern_return_t IOCPURunPlatformActiveActions(void);
+extern kern_return_t IOCPURunPlatformHaltRestartActions(uint32_t message);
extern void fpinit(void);
vm_offset_t
acpi_install_wake_handler(void)
{
- /* copy wake code to ACPI_WAKE_ADDR in low memory */
- bcopy_phys(kvtophys((vm_offset_t)acpi_wake_start),
- (addr64_t) ACPI_WAKE_ADDR,
- acpi_wake_end - acpi_wake_start);
+#if CONFIG_SLEEP
+ install_real_mode_bootstrap(acpi_wake_prot);
+ return REAL_MODE_BOOTSTRAP_OFFSET;
+#else
+ return 0;
+#endif
+}
- /* flush cache */
- wbinvd();
+#if CONFIG_SLEEP
- /* return physical address of the wakeup code */
- return ACPI_WAKE_ADDR;
-}
+unsigned int save_kdebug_enable = 0;
+static uint64_t acpi_sleep_abstime;
+static uint64_t acpi_idle_abstime;
+static uint64_t acpi_wake_abstime, acpi_wake_postrebase_abstime;
+boolean_t deep_idle_rebase = TRUE;
#if HIBERNATION
struct acpi_hibernate_callback_data {
if (current_cpu_datap()->cpu_hibernate)
{
- cpu_IA32e_enable(current_cpu_datap());
-
mode = hibernate_write_image();
if( mode == kIOHibernatePostWriteHalt )
{
// off
HIBLOG("power off\n");
+ IOCPURunPlatformHaltRestartActions(kPEHaltCPU);
if (PE_halt_restart) (*PE_halt_restart)(kPEHaltCPU);
}
else if( mode == kIOHibernatePostWriteRestart )
{
// restart
HIBLOG("restart\n");
+ IOCPURunPlatformHaltRestartActions(kPERestartCPU);
if (PE_halt_restart) (*PE_halt_restart)(kPERestartCPU);
}
else
cpu_datap(0)->cpu_hibernate = 0;
}
- /*
- * If we're in 64-bit mode, drop back into legacy mode during sleep.
- */
- cpu_IA32e_disable(current_cpu_datap());
-
}
+#if CONFIG_VMX
+ vmx_suspend();
+#endif
+ kdebug_enable = 0;
+
+ IOCPURunPlatformQuiesceActions();
+
+ acpi_sleep_abstime = mach_absolute_time();
+
(data->func)(data->refcon);
/* should never get here! */
}
-#endif
+#endif /* HIBERNATION */
+#endif /* CONFIG_SLEEP */
-static uint64_t acpi_sleep_abstime;
+extern void slave_pstart(void);
+extern void hibernate_rebuild_vm_structs(void);
+
+extern unsigned int wake_nkdbufs;
void
acpi_sleep_kernel(acpi_sleep_callback func, void *refcon)
{
#if HIBERNATION
acpi_hibernate_callback_data_t data;
- boolean_t did_hibernate;
#endif
+ boolean_t did_hibernate;
+ cpu_data_t *cdp = current_cpu_datap();
+ unsigned int cpu;
+ kern_return_t rc;
+ unsigned int my_cpu;
+ uint64_t start;
+ uint64_t elapsed = 0;
+ uint64_t elapsed_trace_start = 0;
+
+ my_cpu = cpu_number();
+ kprintf("acpi_sleep_kernel hib=%d, cpu=%d\n", cdp->cpu_hibernate,
+ my_cpu);
+
+ /* Get all CPUs to be in the "off" state */
+ for (cpu = 0; cpu < real_ncpus; cpu += 1) {
+ if (cpu == my_cpu)
+ continue;
+ rc = pmCPUExitHaltToOff(cpu);
+ if (rc != KERN_SUCCESS)
+ panic("Error %d trying to transition CPU %d to OFF",
+ rc, cpu);
+ }
- kprintf("acpi_sleep_kernel hib=%d\n",
- current_cpu_datap()->cpu_hibernate);
-
- /* shutdown local APIC before passing control to BIOS */
+ /* shutdown local APIC before passing control to firmware */
lapic_shutdown();
#if HIBERNATION
data.refcon = refcon;
#endif
+#if MONOTONIC
+ mt_cpu_down(cdp);
+#endif /* MONOTONIC */
+
/* Save power management timer state */
pmTimerSave();
- /*
- * Turn off VT, otherwise switching to legacy mode will fail
- */
- vmx_suspend();
+#if HYPERVISOR
+ /* Notify hypervisor that we are about to sleep */
+ hv_suspend();
+#endif
/*
- * If we're in 64-bit mode, drop back into legacy mode during sleep.
+ * Enable FPU/SIMD unit for potential hibernate acceleration
*/
- cpu_IA32e_disable(current_cpu_datap());
+ clear_ts();
+
+ KDBG(IOKDBG_CODE(DBG_HIBERNATE, 0) | DBG_FUNC_START);
+
+ save_kdebug_enable = kdebug_enable;
+ kdebug_enable = 0;
acpi_sleep_abstime = mach_absolute_time();
+#if CONFIG_SLEEP
/*
* Save master CPU state and sleep platform.
* Will not return until platform is woken up,
* or if sleep failed.
*/
+ uint64_t old_cr3 = x86_64_pre_sleep();
#if HIBERNATION
acpi_sleep_cpu(acpi_hibernate, &data);
#else
+#if CONFIG_VMX
+ vmx_suspend();
+#endif
acpi_sleep_cpu(func, refcon);
#endif
+ acpi_wake_abstime = mach_absolute_time();
+ /* Rebase TSC->absolute time conversion, using timestamp
+ * recorded before sleep.
+ */
+ rtc_nanotime_init(acpi_sleep_abstime);
+ acpi_wake_postrebase_abstime = start = mach_absolute_time();
+ assert(start >= acpi_sleep_abstime);
+
+ x86_64_post_sleep(old_cr3);
+
+#endif /* CONFIG_SLEEP */
+
/* Reset UART if kprintf is enabled.
* However kprintf should not be used before rtc_sleep_wakeup()
* for compatibility with firewire kprintf.
*/
if (FALSE == disable_serial_output)
- serial_init();
+ pal_serial_init();
#if HIBERNATION
if (current_cpu_datap()->cpu_hibernate) {
- int i;
- for (i = 0; i < PMAP_NWINDOWS; i++)
- *current_cpu_datap()->cpu_pmap->mapwindow[i].prv_CMAP = 0;
- current_cpu_datap()->cpu_hibernate = 0;
did_hibernate = TRUE;
} else
did_hibernate = FALSE;
}
- /* Re-enable mode (including 64-bit if applicable) */
- cpu_mode_init(current_cpu_datap());
+ /* Re-enable fast syscall */
+ cpu_syscall_init(current_cpu_datap());
+#if CONFIG_MCA
/* Re-enable machine check handling */
mca_cpu_init();
+#endif
+#if CONFIG_MTRR
/* restore MTRR settings */
mtrr_update_cpu();
+#endif
- /*
- * Restore VT mode
- */
- vmx_resume();
+ /* update CPU microcode */
+ ucode_update_wake();
+#if CONFIG_MTRR
/* set up PAT following boot processor power up */
pat_init();
+#endif
+
+#if CONFIG_VMX
+ /*
+ * Restore VT mode
+ */
+ vmx_resume(did_hibernate);
+#endif
/*
* Go through all of the CPUs and mark them as requiring
*/
pmMarkAllCPUsOff();
- /* let the realtime clock reset */
- rtc_sleep_wakeup(acpi_sleep_abstime);
-
- if (did_hibernate)
- hibernate_machine_init();
- /* re-enable and re-init local apic */
+ /* re-enable and re-init local apic (prior to starting timers) */
if (lapic_probe())
lapic_configure();
+#if KASAN
+ /*
+ * The sleep implementation uses indirect noreturn calls, so we miss stack
+ * unpoisoning. Do it explicitly.
+ */
+ __asan_handle_no_return();
+#endif
+
+#if HIBERNATION
+ hibernate_rebuild_vm_structs();
+#endif
+
+ elapsed += mach_absolute_time() - start;
+
+ rtc_decrementer_configure();
+ kdebug_enable = save_kdebug_enable;
+
+ if (kdebug_enable == 0) {
+ if (wake_nkdbufs) {
+ start = mach_absolute_time();
+ kdebug_trace_start(wake_nkdbufs, NULL, TRUE);
+ elapsed_trace_start += mach_absolute_time() - start;
+ }
+ }
+ start = mach_absolute_time();
+
+ /* Reconfigure FP/SIMD unit */
+ init_fpu();
+ clear_ts();
+
+ IOCPURunPlatformActiveActions();
+
+#if HIBERNATION
+ if (did_hibernate) {
+ KDBG(IOKDBG_CODE(DBG_HIBERNATE, 2) | DBG_FUNC_START);
+ hibernate_machine_init();
+ KDBG(IOKDBG_CODE(DBG_HIBERNATE, 2) | DBG_FUNC_END);
+
+ current_cpu_datap()->cpu_hibernate = 0;
+ }
+#endif /* HIBERNATION */
+
+ KDBG(IOKDBG_CODE(DBG_HIBERNATE, 0) | DBG_FUNC_END, start, elapsed,
+ elapsed_trace_start, acpi_wake_abstime);
+
/* Restore power management register state */
pmCPUMarkRunning(current_cpu_datap());
/* Restore power management timer state */
pmTimerRestore();
- /* Restart tick interrupts from the LAPIC timer */
- rtc_lapic_start_ticking();
-
- fpinit();
- clear_fpu();
+ /* Restart timer interrupts */
+ rtc_timer_start();
#if HIBERNATION
- if (did_hibernate)
- enable_preemption();
kprintf("ret from acpi_sleep_cpu hib=%d\n", did_hibernate);
#endif
+
+#if CONFIG_SLEEP
+ /* Becase we don't save the bootstrap page, and we share it
+ * between sleep and mp slave init, we need to recreate it
+ * after coming back from sleep or hibernate */
+ install_real_mode_bootstrap(slave_pstart);
+#endif
+}
+
+/*
+ * acpi_idle_kernel is called by the ACPI Platform kext to request the kernel
+ * to idle the boot processor in the deepest C-state for S0 sleep. All slave
+ * processors are expected already to have been offlined in the deepest C-state.
+ *
+ * The contract with ACPI is that although the kernel is called with interrupts
+ * disabled, interrupts may need to be re-enabled to dismiss any pending timer
+ * interrupt. However, the callback function will be called once this has
+ * occurred and interrupts are guaranteed to be disabled at that time,
+ * and to remain disabled during C-state entry, exit (wake) and return
+ * from acpi_idle_kernel.
+ */
+void
+acpi_idle_kernel(acpi_sleep_callback func, void *refcon)
+{
+ boolean_t istate = ml_get_interrupts_enabled();
+
+ kprintf("acpi_idle_kernel, cpu=%d, interrupts %s\n",
+ cpu_number(), istate ? "enabled" : "disabled");
+
+ assert(cpu_number() == master_cpu);
+
+ /* Cancel any pending deadline */
+ setPop(0);
+ while (lapic_is_interrupting(LAPIC_TIMER_VECTOR)) {
+ (void) ml_set_interrupts_enabled(TRUE);
+ setPop(0);
+ ml_set_interrupts_enabled(FALSE);
+ }
+
+ /*
+ * Call back to caller to indicate that interrupts will remain
+ * disabled while we deep idle, wake and return.
+ */
+ IOCPURunPlatformQuiesceActions();
+
+ func(refcon);
+
+ acpi_idle_abstime = mach_absolute_time();
+
+ KERNEL_DEBUG_CONSTANT(
+ MACHDBG_CODE(DBG_MACH_SCHED, MACH_DEEP_IDLE) | DBG_FUNC_START,
+ acpi_idle_abstime, deep_idle_rebase, 0, 0, 0);
+
+ /*
+ * Disable tracing during S0-sleep
+ * unless overridden by sysctl -w tsc.deep_idle_rebase=0
+ */
+ if (deep_idle_rebase) {
+ save_kdebug_enable = kdebug_enable;
+ kdebug_enable = 0;
+ }
+
+ /*
+ * Call into power-management to enter the lowest C-state.
+ * Note when called on the boot processor this routine will
+ * return directly when awoken.
+ */
+ pmCPUHalt(PM_HALT_SLEEP);
+
+ /*
+ * Get wakeup time relative to the TSC which has progressed.
+ * Then rebase nanotime to reflect time not progressing over sleep
+ * - unless overriden so that tracing can occur during deep_idle.
+ */
+ acpi_wake_abstime = mach_absolute_time();
+ if (deep_idle_rebase) {
+ rtc_sleep_wakeup(acpi_idle_abstime);
+ kdebug_enable = save_kdebug_enable;
+ }
+ acpi_wake_postrebase_abstime = mach_absolute_time();
+ assert(mach_absolute_time() >= acpi_idle_abstime);
+
+ KERNEL_DEBUG_CONSTANT(
+ MACHDBG_CODE(DBG_MACH_SCHED, MACH_DEEP_IDLE) | DBG_FUNC_END,
+ acpi_wake_abstime, acpi_wake_abstime - acpi_idle_abstime, 0, 0, 0);
+
+ /* Like S3 sleep, turn on tracing if trace_wake boot-arg is present */
+ if (kdebug_enable == 0) {
+ if (wake_nkdbufs) {
+ __kdebug_only uint64_t start = mach_absolute_time();
+ kdebug_trace_start(wake_nkdbufs, NULL, TRUE);
+ KDBG(IOKDBG_CODE(DBG_HIBERNATE, 15), start);
+ }
+ }
+
+ IOCPURunPlatformActiveActions();
+
+ /* Restart timer interrupts */
+ rtc_timer_start();
+}
+
+extern char real_mode_bootstrap_end[];
+extern char real_mode_bootstrap_base[];
+
+void
+install_real_mode_bootstrap(void *prot_entry)
+{
+ /*
+ * Copy the boot entry code to the real-mode vector area REAL_MODE_BOOTSTRAP_OFFSET.
+ * This is in page 1 which has been reserved for this purpose by
+ * machine_startup() from the boot processor.
+ * The slave boot code is responsible for switching to protected
+ * mode and then jumping to the common startup, _start().
+ */
+ bcopy_phys(kvtophys((vm_offset_t) real_mode_bootstrap_base),
+ (addr64_t) REAL_MODE_BOOTSTRAP_OFFSET,
+ real_mode_bootstrap_end-real_mode_bootstrap_base);
+
+ /*
+ * Set the location at the base of the stack to point to the
+ * common startup entry.
+ */
+ ml_phys_write_word(
+ PROT_MODE_START+REAL_MODE_BOOTSTRAP_OFFSET,
+ (unsigned int)kvtophys((vm_offset_t)prot_entry));
+
+ /* Flush caches */
+ __asm__("wbinvd");
+}
+
+boolean_t
+ml_recent_wake(void) {
+ uint64_t ctime = mach_absolute_time();
+ assert(ctime > acpi_wake_postrebase_abstime);
+ return ((ctime - acpi_wake_postrebase_abstime) < 5 * NSEC_PER_SEC);
}
projects / apple / xnu.git / blobdiff