xnu-4570.71.2.tar.gz

[apple/xnu.git] / osfmk / i386 / cpu.c

diff --git a/osfmk/i386/cpu.c b/osfmk/i386/cpu.c
index 52460c1492da605d71966787ed8113ea6c02adf0..84cf0661559e8d8c9d0c8c6c1f2e97ef722af98e 100644 (file)
--- a/osfmk/i386/cpu.c
+++ b/osfmk/i386/cpu.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@
  * 
@@ -35,14 +35,18 @@
 #include <kern/misc_protos.h>
 #include <kern/machine.h>
 #include <mach/processor_info.h>
-#include <i386/mp.h>
+#include <i386/pmap.h>
 #include <i386/machine_cpu.h>
 #include <i386/machine_routines.h>
-#include <i386/pmap.h>
 #include <i386/misc_protos.h>
 #include <i386/cpu_threads.h>
+#include <i386/rtclock_protos.h>
+#include <i386/cpuid.h>
+#if CONFIG_VMX
+#include <i386/vmx/vmx_cpu.h>
+#endif
 #include <vm/vm_kern.h>
-
+#include <kern/timer_call.h>
 
 struct processor       processor_master;
 
@@ -53,7 +57,7 @@ cpu_control(
        processor_info_t        info,
        unsigned int            count)
 {
-       printf("cpu_control(%d,0x%x,%d) not implemented\n",
+       printf("cpu_control(%d,%p,%d) not implemented\n",
                slot_num, info, count);
        return (KERN_FAILURE);
 }
@@ -76,7 +80,7 @@ cpu_info(
        processor_info_t        info,
        unsigned int            *count)
 {
-       printf("cpu_info(%d,%d,0x%x,0x%x) not implemented\n",
+       printf("cpu_info(%d,%d,%p,%p) not implemented\n",
                flavor, slot_num, info, count);
        return (KERN_FAILURE);
 }
@@ -84,9 +88,9 @@ cpu_info(
 void
 cpu_sleep(void)
 {
-       cpu_data_t      *proc_info = current_cpu_datap();
+       cpu_data_t      *cdp = current_cpu_datap();
 
-       PE_cpu_machine_quiesce(proc_info->cpu_id);
+       PE_cpu_machine_quiesce(cdp->cpu_id);
 
        cpu_thread_halt();
 }
@@ -96,15 +100,13 @@ cpu_init(void)
 {
        cpu_data_t      *cdp = current_cpu_datap();
 
-#ifdef MACH_BSD
-       /* FIXME */
-       cdp->cpu_type = CPU_TYPE_I386;
-       cdp->cpu_subtype = CPU_SUBTYPE_PENTPRO;
-#else
-       cdp->cpu_type = cpuid_cputype(0);
-       cdp->cpu_subtype = CPU_SUBTYPE_AT386;
-#endif
-       cdp->cpu_running = TRUE;
+       timer_call_queue_init(&cdp->rtclock_timer.queue);
+       cdp->rtclock_timer.deadline = EndOfAllTime;
+
+       cdp->cpu_type = cpuid_cputype();
+       cdp->cpu_subtype = cpuid_cpusubtype();
+
+       i386_activate_cpu();
 }
 
 kern_return_t
@@ -116,38 +118,76 @@ cpu_start(
        if (cpu == cpu_number()) {
                cpu_machine_init();
                return KERN_SUCCESS;
-       } else {
+       }
+
+       /*
+        * Try to bring the CPU back online without a reset.
+        * If the fast restart doesn't succeed, fall back to
+        * the slow way.
+        */
+       ret = intel_startCPU_fast(cpu);
+       if (ret != KERN_SUCCESS) {
                /*
                 * Should call out through PE.
                 * But take the shortcut here.
                 */
                ret = intel_startCPU(cpu);
-               return(ret);
        }
+
+       if (ret != KERN_SUCCESS)
+               kprintf("cpu: cpu_start(%d) returning failure!\n", cpu);
+
+       return(ret);
 }
 
 void
 cpu_exit_wait(
-       __unused int cpu)
+       int cpu)
 {
+       cpu_data_t      *cdp = cpu_datap(cpu);
+       boolean_t       intrs_enabled;
+       uint64_t        tsc_timeout;
+
+       /*
+        * Wait until the CPU indicates that it has stopped.
+        * Disable interrupts while the topo lock is held -- arguably
+        * this should always be done but in this instance it can lead to
+        * a timeout if long-running interrupt were to occur here.
+        */
+       intrs_enabled = ml_set_interrupts_enabled(FALSE);
+       mp_safe_spin_lock(&x86_topo_lock);
+       /* Set a generous timeout of several seconds (in TSC ticks) */
+       tsc_timeout = rdtsc64() + (10ULL * 1000 * 1000 * 1000);
+       while ((cdp->lcpu.state != LCPU_HALT)
+              && (cdp->lcpu.state != LCPU_OFF)
+              && !cdp->lcpu.stopped) {
+           simple_unlock(&x86_topo_lock);
+           ml_set_interrupts_enabled(intrs_enabled);
+           cpu_pause();
+           if (rdtsc64() > tsc_timeout)
+               panic("cpu_exit_wait(%d) timeout", cpu);
+           ml_set_interrupts_enabled(FALSE);
+           mp_safe_spin_lock(&x86_topo_lock);
+       }
+       simple_unlock(&x86_topo_lock);
+       ml_set_interrupts_enabled(intrs_enabled);
 }
 
 void
 cpu_machine_init(
        void)
 {
-       int     cpu;
+       cpu_data_t      *cdp = current_cpu_datap();
 
-       cpu = get_cpu_number();
-       PE_cpu_machine_init(cpu_datap(cpu)->cpu_id, TRUE);
-#if 0
-       if (cpu_datap(cpu)->hibernate)
-       {
-           cpu_datap(cpu)->hibernate = 0;
-           hibernate_machine_init();
-       }
-#endif
+       PE_cpu_machine_init(cdp->cpu_id, !cdp->cpu_boot_complete);
+       cdp->cpu_boot_complete = TRUE;
+       cdp->cpu_running = TRUE;
        ml_init_interrupt();
+
+#if CONFIG_VMX
+       /* initialize VMX for every CPU */
+       vmx_cpu_init();
+#endif
 }
 
 processor_t
@@ -159,7 +199,7 @@ cpu_processor_alloc(boolean_t is_boot_cpu)
        if (is_boot_cpu)
                return &processor_master;
 
-       ret = kmem_alloc(kernel_map, (vm_offset_t *) &proc, sizeof(*proc));
+       ret = kmem_alloc(kernel_map, (vm_offset_t *) &proc, sizeof(*proc), VM_KERN_MEMORY_OSFMK);
        if (ret != KERN_SUCCESS)
                return NULL;