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 3350292f027b2819163da2fabcc2c44ef024c0b6..0b12f2d3118139d6b6450e4c6c8b400047121469 100644 (file)
--- a/osfmk/ppc/pmsCPU.c
+++ b/osfmk/ppc/pmsCPU.c
@@ -1,23 +1,29 @@
 /*
 /*

- * Copyright (c) 2004-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2004-2006 Apple Computer, Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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.
+ * 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.

  * 
  * 

- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
  * 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@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 #include <ppc/machine_routines.h>
 #include <ppc/machine_cpu.h>
  */
 #include <ppc/machine_routines.h>
 #include <ppc/machine_cpu.h>


@@ -27,12 +33,15 @@
 #include <ppc/pmap.h>
 #include <ppc/asm.h>
 #include <ppc/proc_reg.h>
 #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>
 
 
 #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 */
 pmsDef pmsDefault[] = {
        {
                .pmsLimit = century,                                                    /* We can normally stay here for 100 years */


@@ -123,8 +132,7 @@ pmsDef pmsDefault[] = {
  */
 
 void pmsCPUSet(uint32_t sel) {
  */
 
 void pmsCPUSet(uint32_t sel) {

-       int nvoltage, nfreq;
-       uint32_t oldaack;
+       int nfreq;

        struct per_proc_info *pp;
 
        pp = getPerProc();                                                                      /* Get our per_proc */
        struct per_proc_info *pp;
 
        pp = getPerProc();                                                                      /* Get our per_proc */


@@ -165,12 +173,11 @@ void pmsCPUConf(void) {
        kern_return_t ret;
        pmsSetFunc_t pmsDfltFunc[pmsSetFuncMax];                        /* List of functions for the external power control to use */
 
        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 */
 
 
 
        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 */
        }
        if(ret != KERN_SUCCESS) {                                                       /* Some screw up? */
                panic("pmsCPUConf: initial stepper table build failed, ret = %08X\n", ret);     /* Squeal */
        }


@@ -180,6 +187,15 @@ pCCfinish:
        return;
 }
 
        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.
 /*
  *     This function should be called once for each processor to force the
  *     processor to the correct voltage and frequency.


@@ -197,12 +213,13 @@ void pmsCPUInit(void) {
        pmsPark();                                                                                      /* Then park */
 
        kprintf("************ Stepper hardware initialized, cpu %d ******************\n", cpu); /* (BRINGUP) */
        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;
        uint32_t result;
        struct per_proc_info *pp;
        uint64_t scdata;


@@ -230,4 +247,67 @@ uint32_t pmsCPUquery(void) {
        return result;
 }
 
        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;
+}
+
+