X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8f6c56a50524aa785f7e596d52dddfb331e18961..4a3eedf9ecc9bbe3f3a5c6ce5e53ad199d639d32:/osfmk/ppc/pmsCPU.c

diff --git a/osfmk/ppc/pmsCPU.c b/osfmk/ppc/pmsCPU.c
index 81a70c9ca..0b12f2d31 100644
--- a/osfmk/ppc/pmsCPU.c
+++ b/osfmk/ppc/pmsCPU.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2004-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2004-2006 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -33,12 +33,15 @@
 #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 */
@@ -129,8 +132,7 @@ pmsDef pmsDefault[] = {
  */
 
 void pmsCPUSet(uint32_t sel) {
-	int nvoltage, nfreq;
-	uint32_t oldaack;
+	int nfreq;
 	struct per_proc_info *pp;
 
 	pp = getPerProc();									/* Get our per_proc */
@@ -171,12 +173,11 @@ void pmsCPUConf(void) {
 	kern_return_t ret;
 	pmsSetFunc_t pmsDfltFunc[pmsSetFuncMax];			/* List of functions for the external power control to use */
 
-	for(i = 0; i < pmsSetFuncMax; i++) pmsDfltFunc[i] = 0;	/* Clear this */
+	for(i = 0; i < pmsSetFuncMax; i++) pmsDfltFunc[i] = NULL;	/* Clear this */
 
 
 	ret = pmsBuild((pmsDef *)&pmsDefault, sizeof(pmsDefault), pmsDfltFunc, 0, (pmsQueryFunc_t)0);	/* Configure the default stepper */
 
-pCCfinish:
 	if(ret != KERN_SUCCESS) {							/* Some screw up? */
 		panic("pmsCPUConf: initial stepper table build failed, ret = %08X\n", ret);	/* Squeal */
 	}
@@ -186,6 +187,15 @@ 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.
@@ -203,12 +213,13 @@ void pmsCPUInit(void) {
 	pmsPark();											/* Then park */
 
 	kprintf("************ Stepper hardware initialized, cpu %d ******************\n", cpu);	/* (BRINGUP) */
-
-	return;
 }
 
-uint32_t pmsCPUquery(void) {
+extern uint32_t hid1get(void);
 
+uint32_t
+pmsCPUQuery(void)
+{
 	uint32_t result;
 	struct per_proc_info *pp;
 	uint64_t scdata;
@@ -236,4 +247,67 @@ 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;
+}
+
+