X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8f6c56a50524aa785f7e596d52dddfb331e18961..0c530ab8987f0ae6a1a3d9284f40182b88852816:/osfmk/ppc/pmsCPU.c

diff --git a/osfmk/ppc/pmsCPU.c b/osfmk/ppc/pmsCPU.c
index 81a70c9ca..86d179fed 100644
--- 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;
+}
+
+