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[apple/xnu.git] / osfmk / i386 / acpi.c
diff --git a/osfmk/i386/acpi.c b/osfmk/i386/acpi.c
index 006fe9d9b00f8ea4f018595d56dfdbe99694ea9c..f13561244dde4d6450f29914cc3f6b3faa61a6f3 100644 (file)
--- a/osfmk/i386/acpi.c
+++ b/osfmk/i386/acpi.c
@@ -1,5 +1,5 @@
 /*
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -26,116 +26,359 @@
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
-#include <i386/misc_protos.h>
-#include <i386/proc_reg.h>
 #include <i386/pmap.h>
 #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>
+#if CONFIG_MTRR
 #include <i386/mtrr.h>
 #include <i386/mtrr.h>
+#endif
+#if CONFIG_VMX
+#include <i386/vmx/vmx_cpu.h>
+#endif
+#include <i386/ucode.h>
 #include <i386/acpi.h>
 #include <i386/acpi.h>
+#include <i386/fpu.h>
+#include <i386/lapic.h>
 #include <i386/mp.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/cpu_data.h>
+#include <console/serial_protos.h>
+#include <machine/pal_routines.h>
+#include <vm/vm_page.h>
 
 
+#if HIBERNATION
 #include <IOKit/IOHibernatePrivate.h>
 #include <IOKit/IOHibernatePrivate.h>
+#endif
 #include <IOKit/IOPlatformExpert.h>
 
 #include <IOKit/IOPlatformExpert.h>
 
-extern void    acpi_sleep_cpu(acpi_sleep_callback, void * refcon);
-extern char acpi_wake_start[];
-extern char    acpi_wake_end[];
+#include <sys/kdebug.h>
 
 
-extern int     serial_init(void);
-extern unsigned int disableSerialOuput;
+#if CONFIG_SLEEP
+extern void    acpi_sleep_cpu(acpi_sleep_callback, void * refcon);
+extern void acpi_wake_prot(void);
+#endif
 
 
-extern void        set_kbd_leds(int leds);
+extern void    fpinit(void);
 
 vm_offset_t
 acpi_install_wake_handler(void)
 {
 
 vm_offset_t
 acpi_install_wake_handler(void)
 {
-       /* copy wake code to ACPI_WAKE_ADDR in low memory */
-       bcopy_phys((addr64_t) 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 HIBERNATION
+struct acpi_hibernate_callback_data {
+       acpi_sleep_callback func;
+       void *refcon;
+};
+typedef struct acpi_hibernate_callback_data acpi_hibernate_callback_data_t;
 
 
-       /* return physical address of the wakeup code */
-       return ACPI_WAKE_ADDR;
-}
+unsigned int           save_kdebug_enable = 0;
+static uint64_t                acpi_sleep_abstime;
 
 
-typedef struct acpi_hibernate_callback_data {
-    acpi_sleep_callback func;
-    void *refcon;
-} acpi_hibernate_callback_data;
 
 
+#if CONFIG_SLEEP
 static void
 acpi_hibernate(void *refcon)
 {
 static void
 acpi_hibernate(void *refcon)
 {
-    boolean_t hib;
+       uint32_t mode;
+
+       acpi_hibernate_callback_data_t *data =
+               (acpi_hibernate_callback_data_t *)refcon;
+
+       if (current_cpu_datap()->cpu_hibernate) 
+       {
+#if defined(__i386__)
+               cpu_IA32e_enable(current_cpu_datap());
+#endif
+               mode = hibernate_write_image();
 
 
-    acpi_hibernate_callback_data *data = (acpi_hibernate_callback_data *)refcon;
+               if( mode == kIOHibernatePostWriteHalt )
+               {
+                       // off
+                       HIBLOG("power off\n");
+                       if (PE_halt_restart) (*PE_halt_restart)(kPEHaltCPU);
+               }
+               else if( mode == kIOHibernatePostWriteRestart )
+               {
+                       // restart
+                       HIBLOG("restart\n");
+                       if (PE_halt_restart) (*PE_halt_restart)(kPERestartCPU);
+               }
+               else
+               {
+                       // sleep
+                       HIBLOG("sleep\n");
+       
+                       // should we come back via regular wake, set the state in memory.
+                       cpu_datap(0)->cpu_hibernate = 0;                        
+               }
 
 
-    if (current_cpu_datap()->cpu_hibernate) {
-        hib = hibernate_write_image();
-    }
+#if defined(__i386__)
+               /*
+                * If we're in 64-bit mode, drop back into legacy mode during sleep.
+                */
+               cpu_IA32e_disable(current_cpu_datap());
+#endif
+       }
+       kdebug_enable = 0;
 
 
-    (data->func)(data->refcon);
+       acpi_sleep_abstime = mach_absolute_time();
 
 
-    /* should never get here! */
+       (data->func)(data->refcon);
+
+       /* should never get here! */
 }
 }
+#endif /* CONFIG_SLEEP */
+#endif /* HIBERNATION */
+
+extern void                    slave_pstart(void);
+
 
 void
 acpi_sleep_kernel(acpi_sleep_callback func, void *refcon)
 {
 
 void
 acpi_sleep_kernel(acpi_sleep_callback func, void *refcon)
 {
-    acpi_hibernate_callback_data data;
-    boolean_t did_hibernate;
+#if HIBERNATION
+       acpi_hibernate_callback_data_t data;
+#endif
+       boolean_t did_hibernate;
+       unsigned int    cpu;
+       kern_return_t   rc;
+       unsigned int    my_cpu;
+       uint64_t        now;
+       uint64_t        my_tsc;
+       uint64_t        my_abs;
+
+       kprintf("acpi_sleep_kernel hib=%d, cpu=%d\n",
+                       current_cpu_datap()->cpu_hibernate, cpu_number());
 
 
-       /* shutdown local APIC before passing control to BIOS */
+       /* Get all CPUs to be in the "off" state */
+       my_cpu = cpu_number();
+       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);
+       }
+
+       /* shutdown local APIC before passing control to firmware */
        lapic_shutdown();
 
        lapic_shutdown();
 
-    data.func = func;
-    data.refcon = refcon;
+#if HIBERNATION
+       data.func = func;
+       data.refcon = refcon;
+#endif
+
+       /* Save power management timer state */
+       pmTimerSave();
+
+#if CONFIG_VMX
+       /* 
+        * Turn off VT, otherwise switching to legacy mode will fail
+        */
+       vmx_suspend();
+#endif
 
 
+#if defined(__i386__)
+       /*
+        * If we're in 64-bit mode, drop back into legacy mode during sleep.
+        */
+       cpu_IA32e_disable(current_cpu_datap());
+#endif
+       /*
+        * Enable FPU/SIMD unit for potential hibernate acceleration
+        */
+       clear_ts(); 
+
+       KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 0) | DBG_FUNC_START, 0, 0, 0, 0, 0);
+
+       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.
         */
        /*
         * Save master CPU state and sleep platform.
         * Will not return until platform is woken up,
         * or if sleep failed.
         */
-    acpi_sleep_cpu(acpi_hibernate, &data);
+#ifdef __x86_64__
+       uint64_t old_cr3 = x86_64_pre_sleep();
+#endif
+#if HIBERNATION
+       acpi_sleep_cpu(acpi_hibernate, &data);
+#else
+       acpi_sleep_cpu(func, refcon);
+#endif
+
+#ifdef __x86_64__
+       x86_64_post_sleep(old_cr3);
+#endif
+
+#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)
+               pal_serial_init();
 
 
-       /* reset UART if kprintf is enabled */
-       if (FALSE == disableSerialOuput)
-               serial_init();
+#if HIBERNATION
+       if (current_cpu_datap()->cpu_hibernate) {
+#if defined(__i386__)
+               int i;
+               for (i = 0; i < PMAP_NWINDOWS; i++)
+                       *current_cpu_datap()->cpu_pmap->mapwindow[i].prv_CMAP = 0;
+#endif
+               did_hibernate = TRUE;
 
 
-    if (current_cpu_datap()->cpu_hibernate) {
-        * (int *) CM1 = 0;
-        * (int *) CM2 = 0;
-        * (int *) CM3 = 0;
+       } else
+#endif 
+       {
+               did_hibernate = FALSE;
+       }
 
 
-        current_cpu_datap()->cpu_hibernate = 0;
+       /* Re-enable mode (including 64-bit if applicable) */
+       cpu_mode_init(current_cpu_datap());
 
 
-        did_hibernate = TRUE;
-    } else {
-        did_hibernate = FALSE;
-    }
+#if CONFIG_MCA
+       /* Re-enable machine check handling */
+       mca_cpu_init();
+#endif
 
 
+#if CONFIG_MTRR
        /* restore MTRR settings */
        mtrr_update_cpu();
        /* restore MTRR settings */
        mtrr_update_cpu();
+#endif
+
+       /* update CPU microcode */
+       ucode_update_wake();
+
+#if CONFIG_VMX
+       /* 
+        * Restore VT mode
+        */
+       vmx_resume();
+#endif
 
 
+#if CONFIG_MTRR
        /* set up PAT following boot processor power up */
        pat_init();
        /* set up PAT following boot processor power up */
        pat_init();
+#endif
+
+       /*
+        * Go through all of the CPUs and mark them as requiring
+        * a full restart.
+        */
+       pmMarkAllCPUsOff();
 
 
-    if (did_hibernate) {
-        hibernate_machine_init();
-    }
-        
-       /* re-enable and re-init local apic */
+       ml_get_timebase(&now);
+
+       /* re-enable and re-init local apic (prior to starting timers) */
        if (lapic_probe())
        if (lapic_probe())
-               lapic_init();
+               lapic_configure();
 
        /* let the realtime clock reset */
 
        /* let the realtime clock reset */
-       rtc_sleep_wakeup();
+       rtc_sleep_wakeup(acpi_sleep_abstime);
+
+       kdebug_enable = save_kdebug_enable;
+
+       if (did_hibernate) {
+               
+               my_tsc = (now >> 32) | (now << 32);
+               my_abs = tmrCvt(my_tsc, tscFCvtt2n);
+
+               KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 2) | DBG_FUNC_START,
+                                     (uint32_t)(my_abs >> 32), (uint32_t)my_abs, 0, 0, 0);
+               hibernate_machine_init();
+               KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 2) | DBG_FUNC_END, 0, 0, 0, 0, 0);
+
+               current_cpu_datap()->cpu_hibernate = 0;
+
+               KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 0) | DBG_FUNC_END, 0, 0, 0, 0, 0);
+       } else
+               KERNEL_DEBUG_CONSTANT(IOKDBG_CODE(DBG_HIBERNATE, 0) | DBG_FUNC_END, 0, 0, 0, 0, 0);
+
+       /* Restore power management register state */
+       pmCPUMarkRunning(current_cpu_datap());
+
+       /* Restore power management timer state */
+       pmTimerRestore();
 
 
-    if (did_hibernate) {
-        enable_preemption();
-    }
+       /* Restart timer interrupts */
+       rtc_timer_start();
+
+       /* Reconfigure FP/SIMD unit */
+       init_fpu();
+
+#if HIBERNATION
+#ifdef __i386__
+       /* The image is written out using the copy engine, which disables
+        * preemption. Since the copy engine writes out the page which contains
+        * the preemption variable when it is disabled, we need to explicitly
+        * enable it here */
+       if (did_hibernate)
+               enable_preemption();
+#endif
+
+       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
 }
 }
+
+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");
+}
+
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