xnu-1228.3.13.tar.gz

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

diff --git a/osfmk/ppc/pmsCPU.c b/osfmk/ppc/pmsCPU.c
index 81a70c9ca8c51b51efa15225bedb9b7d6e7a1034..0b12f2d3118139d6b6450e4c6c8b400047121469 100644 (file)
--- 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;
+}
+
+