xnu-344.49.tar.gz

[apple/xnu.git] / osfmk / ppc / machine_routines.c

diff --git a/osfmk/ppc/machine_routines.c b/osfmk/ppc/machine_routines.c
index 0a1080cefa2e21384aafc11f435ac36eb338b4e2..86b62c3f6ed389f0246b066efa45e289b3bf9375 100644 (file)
--- a/osfmk/ppc/machine_routines.c
+++ b/osfmk/ppc/machine_routines.c
@@ -3,19 +3,22 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -29,6 +32,11 @@
 #include <ppc/proc_reg.h>
 #include <kern/processor.h>
 
+unsigned int max_cpus_initialized = 0;
+
+#define        MAX_CPUS_SET    0x1
+#define        MAX_CPUS_WAIT   0x2
+
 boolean_t get_interrupts_enabled(void);
 
 /* Map memory map IO space */
@@ -301,7 +309,44 @@ ml_enable_nap(int target_cpu, boolean_t nap_enabled)
 }
 
 void
-ml_ppc_get_info(ml_ppc_cpu_info_t *cpu_info)
+ml_init_max_cpus(unsigned long max_cpus)
+{
+       boolean_t current_state;
+
+       current_state = ml_set_interrupts_enabled(FALSE);
+       if (max_cpus_initialized != MAX_CPUS_SET) {
+               if (max_cpus > 0 && max_cpus < NCPUS)
+                       machine_info.max_cpus = max_cpus;
+               if (max_cpus_initialized == MAX_CPUS_WAIT)
+                       wakeup((event_t)&max_cpus_initialized);
+               max_cpus_initialized = MAX_CPUS_SET;
+       }
+       (void) ml_set_interrupts_enabled(current_state);
+}
+
+int
+ml_get_max_cpus(void)
+{
+       boolean_t current_state;
+
+       current_state = ml_set_interrupts_enabled(FALSE);
+       if (max_cpus_initialized != MAX_CPUS_SET) {
+               max_cpus_initialized = MAX_CPUS_WAIT;
+               assert_wait((event_t)&max_cpus_initialized, THREAD_UNINT);
+               (void)thread_block(THREAD_CONTINUE_NULL);
+       }
+       (void) ml_set_interrupts_enabled(current_state);
+       return(machine_info.max_cpus);
+}
+
+int
+ml_get_current_cpus(void)
+{
+       return machine_info.avail_cpus;
+}
+
+void
+ml_cpu_get_info(ml_cpu_info_t *cpu_info)
 {
   if (cpu_info == 0) return;