]> git.saurik.com Git - apple/xnu.git/blobdiff - osfmk/ppc/cpu.c
xnu-792.13.8.tar.gz
[apple/xnu.git] / osfmk / ppc / cpu.c
index f70af13a4b971b5ada87e7f695e929fccbe4b03b..234cd8e023b8e82e22d590dd9924d4b3d2b16936 100644 (file)
@@ -1,23 +1,31 @@
 /*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_OSREFERENCE_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 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.
- * 
- * @APPLE_LICENSE_HEADER_END@
+ * 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.
+ *
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
+ * Please see the License for the specific language governing rights and 
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  */
 
 #include <mach/mach_types.h>
 #include <kern/thread.h>
 #include <kern/sched_prim.h>
 #include <kern/processor.h>
+#include <kern/pms.h>
 
 #include <vm/pmap.h>
+#include <IOKit/IOHibernatePrivate.h>
 
 #include <ppc/proc_reg.h>
 #include <ppc/misc_protos.h>
@@ -47,6 +57,7 @@
 #include <ppc/Diagnostics.h>
 #include <ppc/trap.h>
 #include <ppc/machine_cpu.h>
+#include <ppc/rtclock.h>
 
 decl_mutex_data(static,ppt_lock);
 
@@ -62,9 +73,9 @@ static unsigned int   rht_state = 0;
 decl_simple_lock_data(static,SignalReadyLock);
 
 struct SIGtimebase {
-       boolean_t       avail;
-       boolean_t       ready;
-       boolean_t       done;
+       volatile boolean_t      avail;
+       volatile boolean_t      ready;
+       volatile boolean_t      done;
        uint64_t        abstime;
 };
 
@@ -118,6 +129,9 @@ cpu_init(
                mttb(proc_info->save_tbl);
        }
 
+       proc_info->rtcPop = EndOfAllTime;                       /* forget any existing decrementer setting */
+       etimer_resync_deadlines();                              /* Now that the time base is sort of correct, request the next timer pop */
+
        proc_info->cpu_type = CPU_TYPE_POWERPC;
        proc_info->cpu_subtype = (cpu_subtype_t)proc_info->pf.rptdProc;
        proc_info->cpu_threadtype = CPU_THREADTYPE_NONE;
@@ -150,6 +164,24 @@ cpu_machine_init(
 
        PE_cpu_machine_init(proc_info->cpu_id, !(proc_info->cpu_flags & BootDone));
 
+       if (proc_info->hibernate) {
+               uint32_t        tbu, tbl;
+
+               do {
+                       tbu = mftbu();
+                       tbl = mftb();
+               } while (mftbu() != tbu);
+
+           proc_info->hibernate = 0;
+           hibernate_machine_init();
+
+               // hibernate_machine_init() could take minutes and we don't want timeouts
+               // to fire as soon as scheduling starts. Reset timebase so it appears
+               // no time has elapsed, as it would for regular sleep.
+               mttb(0);
+               mttbu(tbu);
+               mttb(tbl);
+       }
 
        if (proc_info != mproc_info) {
        while (!((mproc_info->cpu_flags) & SignalReady)) 
@@ -167,6 +199,7 @@ cpu_machine_init(
                        thread_wakeup(&proc_info->cpu_flags);
                }
                simple_unlock(&SignalReadyLock);
+               pmsPark();                                              /* Timers should be cool now, park the power management stepper */
        }
 }
 
@@ -183,30 +216,29 @@ cpu_per_proc_alloc(
        void                    *interrupt_stack=0;
        void                    *debugger_stack=0;
 
-       if ((proc_info = (struct per_proc_info*)kalloc(PAGE_SIZE)) == (struct per_proc_info*)0)
-               return (struct per_proc_info *)NULL;;
+       if ((proc_info = (struct per_proc_info*)kalloc(sizeof(struct per_proc_info))) == (struct per_proc_info*)0)
+               return (struct per_proc_info *)NULL;
        if ((interrupt_stack = kalloc(INTSTACK_SIZE)) == 0) {
-               kfree(proc_info, PAGE_SIZE);
-               return (struct per_proc_info *)NULL;;
+               kfree(proc_info, sizeof(struct per_proc_info));
+               return (struct per_proc_info *)NULL;
        }
-#if     MACH_KDP || MACH_KDB
+
        if ((debugger_stack = kalloc(KERNEL_STACK_SIZE)) == 0) {
-               kfree(proc_info, PAGE_SIZE);
+               kfree(proc_info, sizeof(struct per_proc_info));
                kfree(interrupt_stack, INTSTACK_SIZE);
-               return (struct per_proc_info *)NULL;;
+               return (struct per_proc_info *)NULL;
        }
-#endif
 
        bzero((void *)proc_info, sizeof(struct per_proc_info));
 
+       proc_info->pp2ndPage = (addr64_t)pmap_find_phys(kernel_pmap, (addr64_t)proc_info + 0x1000) << PAGE_SHIFT;       /* Set physical address of the second page */
        proc_info->next_savearea = (uint64_t)save_get_init();
        proc_info->pf = BootProcInfo.pf;
        proc_info->istackptr = (vm_offset_t)interrupt_stack + INTSTACK_SIZE - FM_SIZE;
        proc_info->intstack_top_ss = proc_info->istackptr;
-#if     MACH_KDP || MACH_KDB
        proc_info->debstackptr = (vm_offset_t)debugger_stack + KERNEL_STACK_SIZE - FM_SIZE;
        proc_info->debstack_top_ss = proc_info->debstackptr;
-#endif  /* MACH_KDP || MACH_KDB */
+
        return proc_info;
 
 }
@@ -225,7 +257,7 @@ cpu_per_proc_free(
                return;
        kfree((void *)(proc_info->intstack_top_ss - INTSTACK_SIZE + FM_SIZE), INTSTACK_SIZE);
        kfree((void *)(proc_info->debstack_top_ss -  KERNEL_STACK_SIZE + FM_SIZE), KERNEL_STACK_SIZE);
-       kfree((void *)proc_info, PAGE_SIZE);
+       kfree((void *)proc_info, sizeof(struct per_proc_info));                 /* Release the per_proc */
 }
 
 
@@ -248,7 +280,7 @@ cpu_per_proc_register(
        cpu = real_ncpus;
        proc_info->cpu_number = cpu;
        PerProcTable[cpu].ppe_vaddr = proc_info;
-       PerProcTable[cpu].ppe_paddr = ((addr64_t)pmap_find_phys(kernel_pmap, (vm_offset_t)proc_info)) << PAGE_SHIFT;
+       PerProcTable[cpu].ppe_paddr = (addr64_t)pmap_find_phys(kernel_pmap, (addr64_t)proc_info) << PAGE_SHIFT;
        eieio();
        real_ncpus++;
        mutex_unlock(&ppt_lock);
@@ -281,7 +313,13 @@ cpu_start(
                proc_info->interrupts_enabled = 0;
                proc_info->pending_ast = AST_NONE;
                proc_info->istackptr = proc_info->intstack_top_ss;
-               proc_info->rtcPop = 0xFFFFFFFFFFFFFFFFULL;
+               proc_info->rtcPop = EndOfAllTime;
+               proc_info->FPU_owner = 0;
+               proc_info->VMX_owner = 0;
+               proc_info->pms.pmsStamp = 0;                                                                    /* Dummy transition time */
+               proc_info->pms.pmsPop = EndOfAllTime;                                                   /* Set the pop way into the future */
+               proc_info->pms.pmsState = pmsParked;                                                    /* Park the stepper */
+               proc_info->pms.pmsCSetCmd = pmsCInit;                                                   /* Set dummy initial hardware state */
                mp = (mapping_t *)(&proc_info->ppUMWmp);
                mp->mpFlags = 0x01000000 | mpLinkage | mpPerm | 1;
                mp->mpSpace = invalSpace;
@@ -676,7 +714,7 @@ cpu_sync_timebase(
                                                        (unsigned int)&syncClkSpot) != KERN_SUCCESS)
                continue;
 
-       while (*(volatile int *)&(syncClkSpot.avail) == FALSE)
+       while (syncClkSpot.avail == FALSE)
                continue;
 
        isync();
@@ -694,9 +732,10 @@ cpu_sync_timebase(
 
        syncClkSpot.ready = TRUE;
 
-       while (*(volatile int *)&(syncClkSpot.done) == FALSE)
+       while (syncClkSpot.done == FALSE)
                continue;
 
+       etimer_resync_deadlines();                                                                      /* Start the timer */
        (void)ml_set_interrupts_enabled(intr);
 }
 
@@ -729,7 +768,8 @@ cpu_timebase_signal_handler(
                                                
        timebaseAddr->avail = TRUE;
 
-       while (*(volatile int *)&(timebaseAddr->ready) == FALSE);
+       while (timebaseAddr->ready == FALSE)
+               continue;
 
        if(proc_info->time_base_enable !=  (void(*)(cpu_id_t, boolean_t ))NULL)
                proc_info->time_base_enable(proc_info->cpu_id, TRUE);