+cpu_sleep(void)
+{
+ cpu_data_t *cdp = current_cpu_datap();
+
+ PE_cpu_machine_quiesce(cdp->cpu_id);
+
+ cpu_thread_halt();
+}
+
+void
+cpu_init(void)
+{
+ cpu_data_t *cdp = current_cpu_datap();
+
+ 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
+cpu_start(
+ int cpu)
+{
+ kern_return_t ret;
+
+ if (cpu == cpu_number()) {
+ cpu_machine_init();
+ return KERN_SUCCESS;
+ }
+
+ /*
+ * 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);
+ }
+
+ if (ret != KERN_SUCCESS)
+ kprintf("cpu: cpu_start(%d) returning failure!\n", cpu);
+
+ return(ret);
+}
+
+void
+cpu_exit_wait(
+ 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)
+{
+ cpu_data_t *cdp = current_cpu_datap();
+
+ 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
+cpu_processor_alloc(boolean_t is_boot_cpu)
+{
+ int ret;
+ processor_t proc;
+
+ if (is_boot_cpu)
+ return &processor_master;
+
+ ret = kmem_alloc(kernel_map, (vm_offset_t *) &proc, sizeof(*proc), VM_KERN_MEMORY_OSFMK);
+ if (ret != KERN_SUCCESS)
+ return NULL;
+
+ bzero((void *) proc, sizeof(*proc));
+ return proc;
+}
+
+void
+cpu_processor_free(processor_t proc)
+{
+ if (proc != NULL && proc != &processor_master)
+ kfree((void *) proc, sizeof(*proc));
+}
+
+processor_t
+current_processor(void)
+{
+ return current_cpu_datap()->cpu_processor;
+}
+
+processor_t
+cpu_to_processor(
+ int cpu)
+{
+ return cpu_datap(cpu)->cpu_processor;
+}
+
+ast_t *
+ast_pending(void)
+{
+ return (¤t_cpu_datap()->cpu_pending_ast);
+}
+
+cpu_type_t
+slot_type(
+ int slot_num)
+{
+ return (cpu_datap(slot_num)->cpu_type);
+}
+
+cpu_subtype_t
+slot_subtype(
+ int slot_num)
+{
+ return (cpu_datap(slot_num)->cpu_subtype);
+}
+
+cpu_threadtype_t
+slot_threadtype(
+ int slot_num)
+{
+ return (cpu_datap(slot_num)->cpu_threadtype);
+}
+
+cpu_type_t
+cpu_type(void)
+{
+ return (current_cpu_datap()->cpu_type);
+}
+
+cpu_subtype_t
+cpu_subtype(void)
+{
+ return (current_cpu_datap()->cpu_subtype);
+}
+
+cpu_threadtype_t
+cpu_threadtype(void)
projects / apple / xnu.git / blobdiff