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Diffstat (limited to 'sys/arch/mvme88k/dev/clock.c')
-rw-r--r--sys/arch/mvme88k/dev/clock.c251
1 files changed, 140 insertions, 111 deletions
diff --git a/sys/arch/mvme88k/dev/clock.c b/sys/arch/mvme88k/dev/clock.c
index 2609694ac5d..06295289264 100644
--- a/sys/arch/mvme88k/dev/clock.c
+++ b/sys/arch/mvme88k/dev/clock.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: clock.c,v 1.6 1999/09/27 18:43:23 smurph Exp $ */
+/* $OpenBSD: clock.c,v 1.7 2001/02/01 03:38:14 smurph Exp $ */
/*
* Copyright (c) 1999 Steve Murphree, Jr.
* Copyright (c) 1995 Theo de Raadt
@@ -88,10 +88,13 @@
#include <sys/gmon.h>
#endif
+#include <machine/asm_macro.h> /* for stack_pointer() */
+#include <machine/board.h> /* for register defines */
#include <machine/psl.h>
#include <machine/autoconf.h>
#include <machine/bugio.h>
#include <machine/cpu.h>
+#include <machine/mmu.h> /* DMA_CACHE_SYNC, etc... */
#include "pcctwo.h"
#if NPCCTWO > 0
#include <mvme88k/dev/pcctworeg.h>
@@ -107,17 +110,17 @@ int timerok = 0;
u_long delay_factor = 1;
-static int clockmatch __P((struct device *, void *, void *));
-static void clockattach __P((struct device *, struct device *, void *));
+static int clockmatch __P((struct device *, void *, void *));
+static void clockattach __P((struct device *, struct device *, void *));
-void sbc_initclock(void);
-void m188_initclock(void);
-void m188_timer_init __P((unsigned));
+void sbc_initclock(void);
+void m188_initclock(void);
+void m188_timer_init __P((unsigned));
struct clocksoftc {
- struct device sc_dev;
- struct intrhand sc_profih;
- struct intrhand sc_statih;
+ struct device sc_dev;
+ struct intrhand sc_profih;
+ struct intrhand sc_statih;
};
struct cfattach clock_ca = {
@@ -128,10 +131,10 @@ struct cfdriver clock_cd = {
NULL, "clock", DV_DULL, 0
};
-int sbc_clockintr __P((void *));
-int sbc_statintr __P((void *));
-int m188_clockintr __P((void *));
-int m188_statintr __P((void *));
+int sbc_clockintr __P((void *));
+int sbc_statintr __P((void *));
+int m188_clockintr __P((void *));
+int m188_statintr __P((void *));
int clockbus;
u_char prof_reset;
@@ -142,8 +145,8 @@ u_char prof_reset;
*/
int
clockmatch(parent, vcf, args)
- struct device *parent;
- void *vcf, *args;
+struct device *parent;
+void *vcf, *args;
{
register struct confargs *ca = args;
register struct cfdata *cf = vcf;
@@ -160,57 +163,55 @@ clockmatch(parent, vcf, args)
ca->ca_ipl = IPL_CLOCK;
/* set size to 0 - see pcctwo.c:match for details */
ca->ca_len = 0;
-
-
return (1);
}
void
clockattach(parent, self, args)
- struct device *parent, *self;
- void *args;
+struct device *parent, *self;
+void *args;
{
struct confargs *ca = args;
struct clocksoftc *sc = (struct clocksoftc *)self;
clockbus = ca->ca_bustype;
-
- switch (clockbus) {
-#if NPCCTWO > 0
- case BUS_PCCTWO:
- sc->sc_profih.ih_fn = sbc_clockintr;
- sc->sc_profih.ih_arg = 0;
- sc->sc_profih.ih_wantframe = 1;
- sc->sc_profih.ih_ipl = ca->ca_ipl;
- prof_reset = ca->ca_ipl | PCC2_IRQ_IEN | PCC2_IRQ_ICLR;
- pcctwointr_establish(PCC2V_TIMER1, &sc->sc_profih);
- mdfp.clock_init_func = &sbc_initclock;
- printf(": VME1x7");
- break;
+
+ switch (clockbus) {
+#if NPCCTWO > 0
+ case BUS_PCCTWO:
+ sc->sc_profih.ih_fn = sbc_clockintr;
+ sc->sc_profih.ih_arg = 0;
+ sc->sc_profih.ih_wantframe = 1;
+ sc->sc_profih.ih_ipl = ca->ca_ipl;
+ prof_reset = ca->ca_ipl | PCC2_IRQ_IEN | PCC2_IRQ_ICLR;
+ pcctwointr_establish(PCC2V_TIMER1, &sc->sc_profih);
+ mdfp.clock_init_func = &sbc_initclock;
+ printf(": VME1x7");
+ break;
#endif /* NPCCTWO */
-#if NSYSCON > 0
- case BUS_SYSCON:
- sc->sc_profih.ih_fn = m188_clockintr;
- sc->sc_profih.ih_arg = 0;
- sc->sc_profih.ih_wantframe = 1;
- sc->sc_profih.ih_ipl = ca->ca_ipl;
- sysconintr_establish(SYSCV_TIMER1, &sc->sc_profih);
- mdfp.clock_init_func = &m188_initclock;
- printf(": VME188");
- break;
+#if NSYSCON > 0 && defined(MVME188)
+ case BUS_SYSCON:
+ sc->sc_profih.ih_fn = m188_clockintr;
+ sc->sc_profih.ih_arg = 0;
+ sc->sc_profih.ih_wantframe = 1;
+ sc->sc_profih.ih_ipl = ca->ca_ipl;
+ sysconintr_establish(SYSCV_TIMER1, &sc->sc_profih);
+ mdfp.clock_init_func = &m188_initclock;
+ printf(": VME188");
+ break;
#endif /* NSYSCON */
- }
+ }
printf("\n");
}
-#if NPCCTWO > 0
+#if NPCCTWO > 0
void
sbc_initclock(void)
{
register int statint, minint;
-#ifdef DEBUG
- printf("SBC clock init\n");
+#ifdef CLOCK_DEBUG
+ printf("SBC clock init\n");
#endif
if (1000000 % hz) {
printf("cannot get %d Hz clock; using 100 Hz\n", hz);
@@ -223,7 +224,7 @@ sbc_initclock(void)
sys_pcc2->pcc2_t1cmp = pcc2_timer_us2lim(tick);
sys_pcc2->pcc2_t1count = 0;
sys_pcc2->pcc2_t1ctl = PCC2_TCTL_CEN | PCC2_TCTL_COC |
- PCC2_TCTL_COVF;
+ PCC2_TCTL_COVF;
sys_pcc2->pcc2_t1irq = prof_reset;
}
@@ -233,74 +234,99 @@ sbc_initclock(void)
*/
int
sbc_clockintr(arg)
- void *arg;
+void *arg;
{
sys_pcc2->pcc2_t1irq = prof_reset;
hardclock(arg);
#include "bugtty.h"
#if NBUGTTY > 0
- bugtty_chkinput();
+/* bugtty_chkinput();*/
#endif /* NBUGTTY */
timerok = 1;
- return (1);
+ return (1);
}
#endif /* NPCCTWO */
-
+int
delay(us)
- register int us;
+register int us;
{
volatile register int c;
unsigned long st;
/*
* We use the vme system controller for the delay clock.
* Do not go to the real timer until vme device is present.
- * Or, in the case of MVME188, not at all.
+ * Or, in the case of MVME188, not at all.
*/
if (sys_vme2 == NULL || cputyp == CPU_188) {
- c = 3 * us;
- while (--c > 0);
- return(0);
+ c = 3 * us;
+ while (--c > 0);
+ return (0);
}
- sys_vme2->vme2_irql1 |= (0 << VME2_IRQL1_TIC1SHIFT);
- sys_vme2->vme2_t1count = 0;
- sys_vme2->vme2_tctl |= (VME2_TCTL1_CEN | VME2_TCTL1_COVF);
+ sys_vme2->vme2_irql1 |= (0 << VME2_IRQL1_TIC1SHIFT);
+ sys_vme2->vme2_t1count = 0;
+ sys_vme2->vme2_tctl |= (VME2_TCTL1_CEN | VME2_TCTL1_COVF);
- while (sys_vme2->vme2_t1count < us)
+ while (sys_vme2->vme2_t1count < us)
;
- sys_vme2->vme2_tctl &= ~(VME2_TCTL1_CEN | VME2_TCTL1_COVF);
+ sys_vme2->vme2_tctl &= ~(VME2_TCTL1_CEN | VME2_TCTL1_COVF);
return (0);
}
#if NSYSCON > 0
int counter = 0;
-
+#define IST
int
m188_clockintr(arg)
- void *arg;
+void *arg;
{
- volatile int tmp;
- /* acknowledge the timer interrupt */
- /* clear the counter/timer output OP3 while we program the DART */
- *((volatile int *) DART_OPCR) = 0x00;
+ volatile int tmp;
+ volatile int *dti_stop = (volatile int *)DART_STOPC;
+ volatile int *dti_start = (volatile int *)DART_STARTC;
+ volatile int *ist = (volatile int *)MVME188_IST;
+ register unsigned long sp;
+
+ /* acknowledge the timer interrupt */
+ dma_cachectl(0xFFF82000, 0x1000, DMA_CACHE_SYNC_INVAL);
+ tmp = *dti_stop;
+
+
+ /* check kernel stack for overflow */
+ sp = stack_pointer();
+ if (sp < UADDR + NBPG && sp > UADDR) {
+ if (*ist & DTI_BIT) {
+ printf("DTI not clearing!\n");
+ }
+ printf("kernel stack @ 0x%8x\n", sp);
+ panic("stack overflow eminant!");
+ }
+
+#if 0
+ /* clear the counter/timer output OP3 while we program the DART */
+ *((volatile int *) DART_OPCR) = 0x00;
- /* do the stop counter/timer command */
- tmp = *((volatile int *) DART_STOPC);
+ /* do the stop counter/timer command */
+ tmp = *((volatile int *) DART_STOPC);
- /* set counter/timer to counter mode, clock/16 */
- *((volatile int *) DART_ACR) = 0x30;
-
- *((volatile int *) DART_CTUR) = counter / 256; /* set counter MSB */
- *((volatile int *) DART_CTLR) = counter % 256; /* set counter LSB */
- *((volatile int *) DART_IVR) = SYSCV_TIMER1; /* set interrupt vec */
+ /* set counter/timer to counter mode, clock/16 */
+ *((volatile int *) DART_ACR) = 0x30;
+ *((volatile int *) DART_CTUR) = counter / 256; /* set counter MSB */
+ *((volatile int *) DART_CTLR) = counter % 256; /* set counter LSB */
+ *((volatile int *) DART_IVR) = SYSCV_TIMER1; /* set interrupt vec */
+#endif
hardclock(arg);
#include "bugtty.h"
#if NBUGTTY > 0
- bugtty_chkinput();
+/* bugtty_chkinput(); */
#endif /* NBUGTTY */
- /* give the start counter/timer command */
- tmp = *((volatile int *) DART_STARTC);
- *((volatile int *) DART_OPCR) = 0x04;
+ /* give the start counter/timer command */
+ tmp = *dti_start;
+#if 0
+ *((volatile int *) DART_OPCR) = 0x04;
+#endif
+ if (*ist & DTI_BIT) {
+ printf("DTI not clearing!\n");
+ }
return (1);
}
@@ -309,8 +335,8 @@ m188_initclock(void)
{
register int statint, minint;
-#ifdef DEBUG
- printf("VME188 clock init\n");
+#ifdef CLOCK_DEBUG
+ printf("VME188 clock init\n");
#endif
if (1000000 % hz) {
printf("cannot get %d Hz clock; using 100 Hz\n", hz);
@@ -323,36 +349,39 @@ m188_initclock(void)
void
m188_timer_init(unsigned period)
{
- int imr;
-
- /* make sure the counter range is proper. */
- if ( period < 9 )
- counter = 2;
- else if ( period > 284421 )
- counter = 65535;
- else
- counter = period / 4.34;
-#ifdef DEBUG
- printf("tick == %d, period == %d\n", tick, period);
- printf("timer will interrupt every %d usec\n", (int) (counter * 4.34));
+ int imr;
+ dma_cachectl(0xFFF82000, 0x1000, DMA_CACHE_SYNC_INVAL);
+
+ /* make sure the counter range is proper. */
+ if ( period < 9 )
+ counter = 2;
+ else if ( period > 284421 )
+ counter = 65535;
+ else
+ counter = period / 4.34;
+#ifdef CLOCK_DEBUG
+ printf("tick == %d, period == %d\n", tick, period);
+ printf("timer will interrupt every %d usec\n", (int) (counter * 4.34));
#endif
- /* clear the counter/timer output OP3 while we program the DART */
- *((volatile int *) DART_OPCR) = 0x00;
-
- /* do the stop counter/timer command */
- imr = *((volatile int *) DART_STOPC);
-
- /* set counter/timer to counter mode, clock/16 */
- *((volatile int *) DART_ACR) = 0x30;
-
- *((volatile int *) DART_CTUR) = counter / 256; /* set counter MSB */
- *((volatile int *) DART_CTLR) = counter % 256; /* set counter LSB */
- *((volatile int *) DART_IVR) = SYSCV_TIMER1; /* set interrupt vec */
- /* give the start counter/timer command */
- /* (yes, this is supposed to be a read) */
- imr = *((volatile int *) DART_STARTC);
-
- /* set the counter/timer output OP3 */
- *((volatile int *) DART_OPCR) = 0x04;
+ /* clear the counter/timer output OP3 while we program the DART */
+ *((volatile int *) DART_OPCR) = 0x00;
+
+ /* do the stop counter/timer command */
+ imr = *((volatile int *) DART_STOPC);
+
+ /* set counter/timer to counter mode, clock/16 */
+ *((volatile int *) DART_ACR) = 0x30;
+
+ *((volatile int *) DART_CTUR) = counter / 256; /* set counter MSB */
+ *((volatile int *) DART_CTLR) = counter % 256; /* set counter LSB */
+ *((volatile int *) DART_IVR) = SYSCV_TIMER1; /* set interrupt vec */
+
+ /* give the start counter/timer command */
+ /* (yes, this is supposed to be a read) */
+ imr = *((volatile int *) DART_STARTC);
+
+ /* set the counter/timer output OP3 */
+ *((volatile int *) DART_OPCR) = 0x04;
}
#endif /* NSYSCON */
+
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