xnu-792.25.20.tar.gz

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

diff --git a/osfmk/ppc/pmsCPU.c b/osfmk/ppc/pmsCPU.c
index 81a70c9ca8c51b51efa15225bedb9b7d6e7a1034..86d179fed26c26ca44178c6262b9cf51d7975a14 100644 (file)
--- a/osfmk/ppc/pmsCPU.c
+++ b/osfmk/ppc/pmsCPU.c
@@ -1,29 +1,23 @@
 /*
  * Copyright (c) 2004-2005 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_HEADER_START@
  * 
- * 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. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
+ * 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.
  * 
- * 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
+ * This 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ * @APPLE_LICENSE_HEADER_END@
  */
 #include <ppc/machine_routines.h>
 #include <ppc/machine_cpu.h>
@@ -33,12 +27,15 @@
 #include <ppc/pmap.h>
 #include <ppc/asm.h>
 #include <ppc/proc_reg.h>
-#include <ppc/pms.h>
+#include <kern/pms.h>
 #include <ppc/savearea.h>
 #include <ppc/Diagnostics.h>
 #include <kern/processor.h>
 
 
+static void pmsCPURemote(uint32_t nstep);
+
+
 pmsDef pmsDefault[] = {
        {
                .pmsLimit = century,                                                    /* We can normally stay here for 100 years */
@@ -186,6 +183,15 @@ pCCfinish:
        return;
 }
 
+/*
+ * Machine-dependent initialization
+ */
+void
+pmsCPUMachineInit(void)
+{
+       return;
+}
+
 /*
  *     This function should be called once for each processor to force the
  *     processor to the correct voltage and frequency.
@@ -207,7 +213,7 @@ void pmsCPUInit(void) {
        return;
 }
 
-uint32_t pmsCPUquery(void) {
+uint32_t pmsCPUQuery(void) {
 
        uint32_t result;
        struct per_proc_info *pp;
@@ -236,4 +242,67 @@ uint32_t pmsCPUquery(void) {
        return result;
 }
 
+/*
+ *     These are not implemented for PPC.
+ */
+void pmsCPUYellowFlag(void) {
+}
+
+void pmsCPUGreenFlag(void) {
+}
+
+uint32_t pmsCPUPackageQuery(void)
+{
+       /* multi-core CPUs are not supported. */
+       return(~(uint32_t)0);
+}
+
+/*
+ *     Broadcast a change to all processors including ourselves.
+ *     This must transition before broadcasting because we may block and end up on a different processor.
+ *
+ *     This will block until all processors have transitioned, so
+ *     obviously, this can block.
+ *
+ *     Called with interruptions disabled.
+ *
+ */
+ 
+void pmsCPURun(uint32_t nstep) {
+
+       pmsRunLocal(nstep);                                                             /* If we aren't parking (we are already parked), transition ourselves */
+       (void)cpu_broadcast(&pmsBroadcastWait, pmsCPURemote, nstep);    /* Tell everyone else to do it too */
+
+       return;
+       
+}
+
+/*
+ *     Receive a broadcast and react.
+ *     This is called from the interprocessor signal handler.
+ *     We wake up the initiator after we are finished.
+ *
+ */
+       
+static void pmsCPURemote(uint32_t nstep) {
+
+       pmsRunLocal(nstep);                                                             /* Go set the step */
+       if(!hw_atomic_sub(&pmsBroadcastWait, 1)) {              /* Drop the wait count */
+               thread_wakeup((event_t)&pmsBroadcastWait);      /* If we were the last, wake up the signaller */
+       }
+       return;
+}      
+
+/*
+ *     Control the Power Management Stepper.
+ *     Called from user state by the superuser via a ppc system call.
+ *     Interruptions disabled.
+ *
+ */
+int pmsCntrl(struct savearea *save) {
+       save->save_r3 = pmsControl(save->save_r3, (user_addr_t)(uintptr_t)save->save_r4, save->save_r5);
+       return 1;
+}
+
+