5 files changed, 18 insertions(+), 0 deletions(-)

M power/dat.h
M power/devhotrod.c
M power/faultmips.c
M power/io.h
M power/trap.c

@@ 144,6 144,7 @@ struct Mach
 	int	syscall;
 	int	load;
 	int	intr;
+	int	ledval;			/* value last written to LED */
 
 	int	stack[1];
 };

@@ 412,9 412,11 @@ hotrodintr(int vec)
 	Hotmsg *hm;
 	ulong l;
 
+	LEDON(LEDhotintr);
 	h = &hotrod[vec - Vmevec];
 	if(h<hotrod || h>&hotrod[Nhotrod]){
 		print("bad hotrod vec\n");
+		LEDOFF(LEDhotintr);
 		return;
 	}
 	while(l = h->addr->replyq[h->ri]){	/* assign = */


@@ 427,4 429,5 @@ hotrodintr(int vec)
 		if(!hm->abort)
 			wakeup(&hm->r);
 	}
+	LEDOFF(LEDhotintr);
 }

@@ 5,6 5,7 @@
 #include	"fns.h"
 #include	"ureg.h"
 #include	"../port/error.h"
+#include	"io.h"
 
 /*
  *  find out fault address and type of access.


@@ 18,6 19,7 @@ faultmips(Ureg *ur, int user, int code)
 	char buf[ERRLEN];
 	int read;
 
+	LEDON(LEDfault);
 	addr = ur->badvaddr;
 	addr &= ~(BY2PG-1);
 	read = !(code==CTLBM || code==CTLBS);


@@ 27,6 29,7 @@ faultmips(Ureg *ur, int user, int code)
 			sprint(buf, "sys: trap: fault %s addr=0x%lux",
 				read? "read" : "write", ur->badvaddr);
 			postnote(u->p, 1, buf, NDebug);
+			LEDOFF(LEDfault);
 			return;
 		}
 		print("kernel %s badvaddr=0x%lux\n", excname[code], ur->badvaddr);


@@ 34,6 37,7 @@ faultmips(Ureg *ur, int user, int code)
 		dumpregs(ur);
 		panic("fault");
 	}
+	LEDOFF(LEDfault);
 }
 
 /*

@@ 7,6 7,14 @@
 #define	SBSEMTOP	SYNCBUS(ulong, 0x400000)
 
 #define	LED		((char*)0xBF200001)
+enum
+{
+	LEDhotintr=	1<<0,
+	LEDclock=	1<<1,
+	LEDfault=	1<<2,
+};
+#define LEDON(x) { m->ledval |= x; *LED = m->ledval; }
+#define LEDOFF(x) { m->ledval &= ~x; *LED = m->ledval; }
 
 typedef struct SBCC	SBCC;
 typedef struct Timer	Timer;

@@ 190,7 190,9 @@ intr(Ureg *ur)
 	m->intr++;
 	cause = ur->cause&(INTR5|INTR4|INTR3|INTR2|INTR1);
 	if(cause & (INTR2|INTR4)){
+		LEDON(LEDclock);
 		clock(ur);
+		LEDOFF(LEDclock);
 		cause &= ~(INTR2|INTR4);
 	}
 	if(cause & INTR1){