Author: mav
Date: Sat Sep 11 04:45:51 2010
New Revision: 212453
URL: http://svn.freebsd.org/changeset/base/212453
Log:
Update PowerPC event timer code to use new event timers infrastructure.
Reviewed by: nwitehorn
Tested by: andreast
H/W donated by: Gheorghe Ardelean
Modified:
head/sys/conf/files.powerpc
head/sys/powerpc/aim/clock.c
head/sys/powerpc/aim/interrupt.c
head/sys/powerpc/aim/machdep.c
head/sys/powerpc/booke/clock.c
head/sys/powerpc/booke/interrupt.c
head/sys/powerpc/booke/platform_bare.c
head/sys/powerpc/include/intr_machdep.h
head/sys/powerpc/include/md_var.h
head/sys/powerpc/include/smp.h
head/sys/powerpc/powerpc/intr_machdep.c
head/sys/powerpc/powerpc/mp_machdep.c
Modified: head/sys/conf/files.powerpc
==============================================================================
--- head/sys/conf/files.powerpc Sat Sep 11 02:00:27 2010 (r212452)
+++ head/sys/conf/files.powerpc Sat Sep 11 04:45:51 2010 (r212453)
@@ -52,6 +52,7 @@ dev/syscons/scvtb.c optional sc
dev/tsec/if_tsec.c optional tsec
dev/tsec/if_tsec_fdt.c optional tsec fdt
dev/uart/uart_cpu_powerpc.c optional uart aim
+kern/kern_clocksource.c standard
kern/syscalls.c optional ktr
libkern/ashldi3.c optional powerpc
libkern/ashrdi3.c optional powerpc
Modified: head/sys/powerpc/aim/clock.c
==============================================================================
--- head/sys/powerpc/aim/clock.c Sat Sep 11 02:00:27 2010
(r212452)
+++ head/sys/powerpc/aim/clock.c Sat Sep 11 04:45:51 2010
(r212453)
@@ -65,107 +65,195 @@ __FBSDID("$FreeBSD$");
#include <sys/interrupt.h>
#include <sys/pcpu.h>
#include <sys/sysctl.h>
+#include <sys/timeet.h>
#include <sys/timetc.h>
#include <dev/ofw/openfirm.h>
#include <machine/clock.h>
#include <machine/cpu.h>
+#include <machine/intr_machdep.h>
#include <machine/md_var.h>
#include <machine/smp.h>
/*
* Initially we assume a processor with a bus frequency of 12.5 MHz.
*/
-u_long ns_per_tick = 80;
+static int initialized = 0;
+static u_long ns_per_tick = 80;
static u_long ticks_per_sec = 12500000;
-static long ticks_per_intr;
+static u_long *decr_counts[MAXCPU];
+static int decr_et_start(struct eventtimer *et,
+ struct bintime *first, struct bintime *period);
+static int decr_et_stop(struct eventtimer *et);
static timecounter_get_t decr_get_timecount;
-static struct timecounter decr_timecounter = {
+struct decr_state {
+ int mode; /* 0 - off, 1 - periodic, 2 - one-shot. */
+ int32_t div; /* Periodic divisor. */
+};
+static DPCPU_DEFINE(struct decr_state, decr_state);
+
+static struct eventtimer decr_et;
+static struct timecounter decr_tc = {
decr_get_timecount, /* get_timecount */
0, /* no poll_pps */
~0u, /* counter_mask */
0, /* frequency */
- "decrementer" /* name */
+ "timebase" /* name */
};
+/*
+ * Decrementor interrupt handler.
+ */
void
decr_intr(struct trapframe *frame)
{
- int32_t tick, nticks;
+ struct decr_state *s = DPCPU_PTR(decr_state);
+ int nticks = 0;
+ int32_t val;
- /*
- * Check whether we are initialized.
- */
- if (!ticks_per_intr)
+ if (!initialized)
return;
- /*
- * Based on the actual time delay since the last decrementer reload,
- * we arrange for earlier interrupt next time.
- */
- __asm ("mfdec %0" : "=r"(tick));
- for (nticks = 0; tick < 0; nticks++)
- tick += ticks_per_intr;
- mtdec(tick);
+ (*decr_counts[curcpu])++;
+
+ if (s->mode == 1) {
+ /*
+ * Based on the actual time delay since the last decrementer
+ * reload, we arrange for earlier interrupt next time.
+ */
+ __asm ("mfdec %0" : "=r"(val));
+ while (val < 0) {
+ val += s->div;
+ nticks++;
+ }
+ mtdec(val);
+ } else if (s->mode == 2) {
+ nticks = 1;
+ decr_et_stop(NULL);
+ }
while (nticks-- > 0) {
- if (PCPU_GET(cpuid) == 0)
- hardclock(TRAPF_USERMODE(frame), TRAPF_PC(frame));
- else
- hardclock_cpu(TRAPF_USERMODE(frame));
-
- statclock(TRAPF_USERMODE(frame));
- if (profprocs != 0)
- profclock(TRAPF_USERMODE(frame), TRAPF_PC(frame));
+ if (decr_et.et_active)
+ decr_et.et_event_cb(&decr_et, decr_et.et_arg);
}
}
+/*
+ * BSP early initialization.
+ */
void
decr_init(void)
{
struct cpuref cpu;
- register_t msr;
+ char buf[32];
/*
* Check the BSP's timebase frequency. Sometimes we can't find the BSP,
so fall
* back to the first CPU in this case.
*/
-
if (platform_smp_get_bsp(&cpu) != 0)
platform_smp_first_cpu(&cpu);
-
ticks_per_sec = platform_timebase_freq(&cpu);
-
- msr = mfmsr();
- mtmsr(msr & ~PSL_EE);
-
ns_per_tick = 1000000000 / ticks_per_sec;
- ticks_per_intr = ticks_per_sec / hz;
- mtdec(ticks_per_intr);
set_cputicker(mftb, ticks_per_sec, 0);
-
- mtmsr(msr);
+ snprintf(buf, sizeof(buf), "cpu%d:decrementer", curcpu);
+ intrcnt_add(buf, &decr_counts[curcpu]);
+ decr_et_stop(NULL);
+ initialized = 1;
}
#ifdef SMP
+/*
+ * AP early initialization.
+ */
void
decr_ap_init(void)
{
+ char buf[32];
+ snprintf(buf, sizeof(buf), "cpu%d:decrementer", curcpu);
+ intrcnt_add(buf, &decr_counts[curcpu]);
+ decr_et_stop(NULL);
}
#endif
+/*
+ * Final initialization.
+ */
void
decr_tc_init(void)
{
- decr_timecounter.tc_frequency = ticks_per_sec;
- tc_init(&decr_timecounter);
+
+ decr_tc.tc_frequency = ticks_per_sec;
+ tc_init(&decr_tc);
+ decr_et.et_name = "decrementer";
+ decr_et.et_flags = ET_FLAGS_PERIODIC | ET_FLAGS_ONESHOT |
+ ET_FLAGS_PERCPU;
+ decr_et.et_quality = 1000;
+ decr_et.et_frequency = ticks_per_sec;
+ decr_et.et_min_period.sec = 0;
+ decr_et.et_min_period.frac =
+ ((0x00000002LLU << 32) / ticks_per_sec) << 32;
+ decr_et.et_max_period.sec = 0x7fffffffLLU / ticks_per_sec;
+ decr_et.et_max_period.frac =
+ ((0x7fffffffLLU << 32) / ticks_per_sec) << 32;
+ decr_et.et_start = decr_et_start;
+ decr_et.et_stop = decr_et_stop;
+ decr_et.et_priv = NULL;
+ et_register(&decr_et);
+}
+
+/*
+ * Event timer start method.
+ */
+static int
+decr_et_start(struct eventtimer *et,
+ struct bintime *first, struct bintime *period)
+{
+ struct decr_state *s = DPCPU_PTR(decr_state);
+ uint32_t fdiv;
+
+ if (period != NULL) {
+ s->mode = 1;
+ s->div = (decr_et.et_frequency * (period->frac >> 32)) >> 32;
+ if (period->sec != 0)
+ s->div += decr_et.et_frequency * period->sec;
+ } else {
+ s->mode = 2;
+ s->div = 0x7fffffff;
+ }
+ if (first != NULL) {
+ fdiv = (decr_et.et_frequency * (first->frac >> 32)) >> 32;
+ if (first->sec != 0)
+ fdiv += decr_et.et_frequency * first->sec;
+ } else
+ fdiv = s->div;
+
+ mtdec(fdiv);
+ return (0);
+}
+
+/*
+ * Event timer stop method.
+ */
+static int
+decr_et_stop(struct eventtimer *et)
+{
+ struct decr_state *s = DPCPU_PTR(decr_state);
+
+ s->mode = 0;
+ s->div = 0x7fffffff;
+ mtdec(s->div);
+ return (0);
}
+/*
+ * Timecounter get method.
+ */
static unsigned
decr_get_timecount(struct timecounter *tc)
{
@@ -189,17 +277,3 @@ DELAY(int n)
tb = mftb();
}
-/*
- * Nothing to do.
- */
-void
-cpu_startprofclock(void)
-{
-
- /* Do nothing */
-}
-
-void
-cpu_stopprofclock(void)
-{
-}
Modified: head/sys/powerpc/aim/interrupt.c
==============================================================================
--- head/sys/powerpc/aim/interrupt.c Sat Sep 11 02:00:27 2010
(r212452)
+++ head/sys/powerpc/aim/interrupt.c Sat Sep 11 04:45:51 2010
(r212453)
@@ -72,6 +72,7 @@ void
powerpc_interrupt(struct trapframe *framep)
{
struct thread *td;
+ struct trapframe *oldframe;
register_t ee;
td = curthread;
@@ -88,8 +89,11 @@ powerpc_interrupt(struct trapframe *fram
case EXC_DECR:
critical_enter();
atomic_add_int(&td->td_intr_nesting_level, 1);
+ oldframe = td->td_intr_frame;
+ td->td_intr_frame = framep;
decr_intr(framep);
- atomic_subtract_int(&td->td_intr_nesting_level, 1);
+ td->td_intr_frame = oldframe;
+ atomic_subtract_int(&td->td_intr_nesting_level, 1);
critical_exit();
break;
Modified: head/sys/powerpc/aim/machdep.c
==============================================================================
--- head/sys/powerpc/aim/machdep.c Sat Sep 11 02:00:27 2010
(r212452)
+++ head/sys/powerpc/aim/machdep.c Sat Sep 11 04:45:51 2010
(r212453)
@@ -609,8 +609,7 @@ cpu_initclocks(void)
{
decr_tc_init();
- stathz = hz;
- profhz = hz;
+ cpu_initclocks_bsp();
}
/*
Modified: head/sys/powerpc/booke/clock.c
==============================================================================
--- head/sys/powerpc/booke/clock.c Sat Sep 11 02:00:27 2010
(r212452)
+++ head/sys/powerpc/booke/clock.c Sat Sep 11 04:45:51 2010
(r212453)
@@ -63,12 +63,14 @@ __FBSDID("$FreeBSD$");
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/bus.h>
+#include <sys/interrupt.h>
#include <sys/ktr.h>
#include <sys/pcpu.h>
+#include <sys/timeet.h>
#include <sys/timetc.h>
-#include <sys/interrupt.h>
#include <machine/clock.h>
+#include <machine/intr_machdep.h>
#include <machine/platform.h>
#include <machine/psl.h>
#include <machine/spr.h>
@@ -78,33 +80,46 @@ __FBSDID("$FreeBSD$");
/*
* Initially we assume a processor with a bus frequency of 12.5 MHz.
*/
-u_int tickspending;
-u_long ns_per_tick = 80;
-static u_long ticks_per_sec = 12500000;
-static long ticks_per_intr;
+static int initialized = 0;
+static u_long ns_per_tick = 80;
+static u_long ticks_per_sec = 12500000;
+static u_long *decr_counts[MAXCPU];
#define DIFF19041970 2082844800
+static int decr_et_start(struct eventtimer *et,
+ struct bintime *first, struct bintime *period);
+static int decr_et_stop(struct eventtimer *et);
static timecounter_get_t decr_get_timecount;
+struct decr_state {
+ int mode; /* 0 - off, 1 - periodic, 2 - one-shot. */
+ int32_t div; /* Periodic divisor. */
+};
+static DPCPU_DEFINE(struct decr_state, decr_state);
+
+static struct eventtimer decr_et;
static struct timecounter decr_timecounter = {
decr_get_timecount, /* get_timecount */
0, /* no poll_pps */
~0u, /* counter_mask */
0, /* frequency */
- "decrementer" /* name */
+ "timebase" /* name */
};
+/*
+ * Decrementor interrupt handler.
+ */
void
decr_intr(struct trapframe *frame)
{
+ struct decr_state *s = DPCPU_PTR(decr_state);
- /*
- * Check whether we are initialized.
- */
- if (!ticks_per_intr)
+ if (!initialized)
return;
+ (*decr_counts[curcpu])++;
+
/*
* Interrupt handler must reset DIS to avoid getting another
* interrupt once EE is enabled.
@@ -113,14 +128,11 @@ decr_intr(struct trapframe *frame)
CTR1(KTR_INTR, "%s: DEC interrupt", __func__);
- if (PCPU_GET(cpuid) == 0)
- hardclock(TRAPF_USERMODE(frame), TRAPF_PC(frame));
- else
- hardclock_cpu(TRAPF_USERMODE(frame));
-
- statclock(TRAPF_USERMODE(frame));
- if (profprocs != 0)
- profclock(TRAPF_USERMODE(frame), TRAPF_PC(frame));
+ if (s->mode == 2)
+ decr_et_stop(NULL);
+
+ if (decr_et.et_active)
+ decr_et.et_event_cb(&decr_et, decr_et.et_arg);
}
void
@@ -128,57 +140,129 @@ cpu_initclocks(void)
{
decr_tc_init();
- stathz = hz;
- profhz = hz;
+ cpu_initclocks_bsp();
}
+/*
+ * BSP early initialization.
+ */
void
decr_init(void)
{
struct cpuref cpu;
- unsigned int msr;
+ char buf[32];
if (platform_smp_get_bsp(&cpu) != 0)
platform_smp_first_cpu(&cpu);
ticks_per_sec = platform_timebase_freq(&cpu);
-
- msr = mfmsr();
- mtmsr(msr & ~(PSL_EE));
-
ns_per_tick = 1000000000 / ticks_per_sec;
- ticks_per_intr = ticks_per_sec / hz;
-
- mtdec(ticks_per_intr);
-
- mtspr(SPR_DECAR, ticks_per_intr);
- mtspr(SPR_TCR, mfspr(SPR_TCR) | TCR_DIE | TCR_ARE);
set_cputicker(mftb, ticks_per_sec, 0);
-
- mtmsr(msr);
+ snprintf(buf, sizeof(buf), "cpu%d:decrementer", curcpu);
+ intrcnt_add(buf, &decr_counts[curcpu]);
+ decr_et_stop(NULL);
+ initialized = 1;
}
#ifdef SMP
+/*
+ * AP early initialization.
+ */
void
decr_ap_init(void)
{
+ char buf[32];
- /* Set auto-reload value and enable DEC interrupts in TCR */
- mtspr(SPR_DECAR, ticks_per_intr);
- mtspr(SPR_TCR, mfspr(SPR_TCR) | TCR_DIE | TCR_ARE);
-
- CTR2(KTR_INTR, "%s: set TCR=%p", __func__, mfspr(SPR_TCR));
+ snprintf(buf, sizeof(buf), "cpu%d:decrementer", curcpu);
+ intrcnt_add(buf, &decr_counts[curcpu]);
+ decr_et_stop(NULL);
}
#endif
+/*
+ * Final initialization.
+ */
void
decr_tc_init(void)
{
decr_timecounter.tc_frequency = ticks_per_sec;
tc_init(&decr_timecounter);
+ decr_et.et_name = "decrementer";
+ decr_et.et_flags = ET_FLAGS_PERIODIC | ET_FLAGS_ONESHOT |
+ ET_FLAGS_PERCPU;
+ decr_et.et_quality = 1000;
+ decr_et.et_frequency = ticks_per_sec;
+ decr_et.et_min_period.sec = 0;
+ decr_et.et_min_period.frac =
+ ((0x00000002LLU << 32) / ticks_per_sec) << 32;
+ decr_et.et_max_period.sec = 0xfffffffeLLU / ticks_per_sec;
+ decr_et.et_max_period.frac =
+ ((0xfffffffeLLU << 32) / ticks_per_sec) << 32;
+ decr_et.et_start = decr_et_start;
+ decr_et.et_stop = decr_et_stop;
+ decr_et.et_priv = NULL;
+ et_register(&decr_et);
}
+/*
+ * Event timer start method.
+ */
+static int
+decr_et_start(struct eventtimer *et,
+ struct bintime *first, struct bintime *period)
+{
+ struct decr_state *s = DPCPU_PTR(decr_state);
+ uint32_t fdiv, tcr;
+
+ if (period != NULL) {
+ s->mode = 1;
+ s->div = (decr_et.et_frequency * (period->frac >> 32)) >> 32;
+ if (period->sec != 0)
+ s->div += decr_et.et_frequency * period->sec;
+ } else {
+ s->mode = 2;
+ s->div = 0xffffffff;
+ }
+ if (first != NULL) {
+ fdiv = (decr_et.et_frequency * (first->frac >> 32)) >> 32;
+ if (first->sec != 0)
+ fdiv += decr_et.et_frequency * first->sec;
+ } else
+ fdiv = s->div;
+
+ tcr = mfspr(SPR_TCR);
+ tcr |= TCR_DIE;
+ if (s->mode == 1) {
+ mtspr(SPR_DECAR, s->div);
+ tcr |= TCR_ARE;
+ } else
+ tcr &= ~TCR_ARE;
+ mtdec(fdiv);
+ mtspr(SPR_TCR, tcr);
+ return (0);
+}
+
+/*
+ * Event timer stop method.
+ */
+static int
+decr_et_stop(struct eventtimer *et)
+{
+ struct decr_state *s = DPCPU_PTR(decr_state);
+ uint32_t tcr;
+
+ s->mode = 0;
+ s->div = 0xffffffff;
+ tcr = mfspr(SPR_TCR);
+ tcr &= ~(TCR_DIE | TCR_ARE);
+ mtspr(SPR_TCR, tcr);
+ return (0);
+}
+
+/*
+ * Timecounter get method.
+ */
static unsigned
decr_get_timecount(struct timecounter *tc)
{
@@ -203,18 +287,3 @@ DELAY(int n)
} while (now < end || (now > start && end < start));
}
-/*
- * Nothing to do.
- */
-void
-cpu_startprofclock(void)
-{
-
- /* Do nothing */
-}
-
-void
-cpu_stopprofclock(void)
-{
-
-}
Modified: head/sys/powerpc/booke/interrupt.c
==============================================================================
--- head/sys/powerpc/booke/interrupt.c Sat Sep 11 02:00:27 2010
(r212452)
+++ head/sys/powerpc/booke/interrupt.c Sat Sep 11 04:45:51 2010
(r212453)
@@ -116,11 +116,15 @@ void
powerpc_decr_interrupt(struct trapframe *framep)
{
struct thread *td;
+ struct trapframe *oldframe;
td = PCPU_GET(curthread);
critical_enter();
atomic_add_int(&td->td_intr_nesting_level, 1);
+ oldframe = td->td_intr_frame;
+ td->td_intr_frame = framep;
decr_intr(framep);
+ td->td_intr_frame = oldframe;
atomic_subtract_int(&td->td_intr_nesting_level, 1);
critical_exit();
framep->srr1 &= ~PSL_WE;
Modified: head/sys/powerpc/booke/platform_bare.c
==============================================================================
--- head/sys/powerpc/booke/platform_bare.c Sat Sep 11 02:00:27 2010
(r212452)
+++ head/sys/powerpc/booke/platform_bare.c Sat Sep 11 04:45:51 2010
(r212453)
@@ -82,7 +82,7 @@ static platform_method_t bare_methods[]
PLATFORMMETHOD(platform_smp_get_bsp, bare_smp_get_bsp),
PLATFORMMETHOD(platform_smp_start_cpu, bare_smp_start_cpu),
- PLATFORMMETHOD(platform_reset, e500_reset);
+ PLATFORMMETHOD(platform_reset, e500_reset),
{ 0, 0 }
};
Modified: head/sys/powerpc/include/intr_machdep.h
==============================================================================
--- head/sys/powerpc/include/intr_machdep.h Sat Sep 11 02:00:27 2010
(r212452)
+++ head/sys/powerpc/include/intr_machdep.h Sat Sep 11 04:45:51 2010
(r212453)
@@ -48,6 +48,8 @@ struct trapframe;
driver_filter_t powerpc_ipi_handler;
+void intrcnt_add(const char *name, u_long **countp);
+
void powerpc_register_pic(device_t, u_int);
int powerpc_ign_lookup(uint32_t pic_id);
Modified: head/sys/powerpc/include/md_var.h
==============================================================================
--- head/sys/powerpc/include/md_var.h Sat Sep 11 02:00:27 2010
(r212452)
+++ head/sys/powerpc/include/md_var.h Sat Sep 11 04:45:51 2010
(r212453)
@@ -47,8 +47,6 @@ extern int busdma_swi_pending;
extern vm_offset_t kstack0;
extern vm_offset_t kstack0_phys;
-extern u_long ns_per_tick;
-
extern int powerpc_pow_enabled;
extern int cacheline_size;
extern int hw_direct_map;
Modified: head/sys/powerpc/include/smp.h
==============================================================================
--- head/sys/powerpc/include/smp.h Sat Sep 11 02:00:27 2010
(r212452)
+++ head/sys/powerpc/include/smp.h Sat Sep 11 04:45:51 2010
(r212453)
@@ -36,6 +36,7 @@
#define IPI_RENDEZVOUS 2
#define IPI_STOP 3
#define IPI_STOP_HARD 3
+#define IPI_HARDCLOCK 4
#ifndef LOCORE
Modified: head/sys/powerpc/powerpc/intr_machdep.c
==============================================================================
--- head/sys/powerpc/powerpc/intr_machdep.c Sat Sep 11 02:00:27 2010
(r212452)
+++ head/sys/powerpc/powerpc/intr_machdep.c Sat Sep 11 04:45:51 2010
(r212453)
@@ -95,6 +95,7 @@ struct powerpc_intr {
device_t pic;
u_int intline;
u_int vector;
+ u_int cntindex;
cpumask_t cpu;
enum intr_trigger trig;
enum intr_polarity pol;
@@ -106,6 +107,7 @@ struct pic {
int ipi_irq;
};
+static u_int intrcnt_index = 0;
static struct mtx intr_table_lock;
static struct powerpc_intr *powerpc_intrs[INTR_VECTORS];
static struct pic piclist[MAX_PICS];
@@ -152,6 +154,16 @@ intrcnt_setname(const char *name, int in
MAXCOMLEN, name);
}
+void
+intrcnt_add(const char *name, u_long **countp)
+{
+ int idx;
+
+ idx = atomic_fetchadd_int(&intrcnt_index, 1);
+ *countp = &intrcnt[idx];
+ intrcnt_setname(name, idx);
+}
+
static struct powerpc_intr *
intr_lookup(u_int irq)
{
@@ -200,8 +212,10 @@ intr_lookup(u_int irq)
if (iscan == NULL && i->vector != -1) {
powerpc_intrs[i->vector] = i;
+ i->cntindex = atomic_fetchadd_int(&intrcnt_index, 1);
+ i->cntp = &intrcnt[i->cntindex];
sprintf(intrname, "irq%u:", i->irq);
- intrcnt_setname(intrname, i->vector);
+ intrcnt_setname(intrname, i->cntindex);
nvectors++;
}
mtx_unlock(&intr_table_lock);
@@ -384,8 +398,6 @@ powerpc_setup_intr(const char *name, u_i
if (error)
return (error);
- i->cntp = &intrcnt[i->vector];
-
enable = 1;
}
@@ -393,7 +405,7 @@ powerpc_setup_intr(const char *name, u_i
intr_priority(flags), flags, cookiep);
mtx_lock(&intr_table_lock);
- intrcnt_setname(i->event->ie_fullname, i->vector);
+ intrcnt_setname(i->event->ie_fullname, i->cntindex);
mtx_unlock(&intr_table_lock);
if (!cold) {
Modified: head/sys/powerpc/powerpc/mp_machdep.c
==============================================================================
--- head/sys/powerpc/powerpc/mp_machdep.c Sat Sep 11 02:00:27 2010
(r212452)
+++ head/sys/powerpc/powerpc/mp_machdep.c Sat Sep 11 04:45:51 2010
(r212453)
@@ -59,7 +59,6 @@ extern struct pcpu __pcpu[MAXCPU];
volatile static int ap_awake;
volatile static u_int ap_letgo;
-volatile static uint32_t ap_decr;
volatile static u_quad_t ap_timebase;
static u_int ipi_msg_cnt[32];
static struct mtx ap_boot_mtx;
@@ -79,9 +78,8 @@ machdep_ap_bootstrap(void)
;
/* Initialize DEC and TB, sync with the BSP values */
- decr_ap_init();
mttb(ap_timebase);
- __asm __volatile("mtdec %0" :: "r"(ap_decr));
+ decr_ap_init();
/* Serialize console output and AP count increment */
mtx_lock_spin(&ap_boot_mtx);
@@ -96,6 +94,9 @@ machdep_ap_bootstrap(void)
/* Let the DEC and external interrupts go */
mtmsr(mfmsr() | PSL_EE);
+ /* Start per-CPU event timers. */
+ cpu_initclocks_ap();
+
/* Announce ourselves awake, and enter the scheduler */
sched_throw(NULL);
}
@@ -243,7 +244,6 @@ cpu_mp_unleash(void *dummy)
ap_awake = 1;
/* Provide our current DEC and TB values for APs */
- __asm __volatile("mfdec %0" : "=r"(ap_decr));
ap_timebase = mftb() + 10;
__asm __volatile("msync; isync");
@@ -313,6 +313,10 @@ powerpc_ipi_handler(void *arg)
atomic_clear_int(&stopped_cpus, self);
CTR1(KTR_SMP, "%s: IPI_STOP (restart)", __func__);
break;
+ case IPI_HARDCLOCK:
+ CTR1(KTR_SMP, "%s: IPI_HARDCLOCK", __func__);
+ hardclockintr(curthread->td_intr_frame);
+ break;
}
}
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