/*
- * 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,
- * 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/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 */
*/
void pmsCPUSet(uint32_t sel) {
- int nvoltage, nfreq;
- uint32_t oldaack;
+ int nfreq;
struct per_proc_info *pp;
pp = getPerProc(); /* Get our per_proc */
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 */
}
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.
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;
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;
+}
+
+
projects / apple / xnu.git / blobdiff