From adf058f0f73198b8482a9504168d486204ee52a3 Mon Sep 17 00:00:00 2001
From: mjacob <mjacob@NetBSD.org>
Date: Wed, 8 Jul 1998 00:47:53 +0000
Subject: [PATCH] There can only be one TurboLaser node, and now we'll overload
 into the integer tlsb_found a bit map of found nodes and export it to the
 rest of the kernel. This is so that at machine check time when we're doing
 some TLSB/KFTXX error handling we don't have to attempt a badaddr to look at
 all TLSB nodes (which will just be too sad to try...).

---
 sys/arch/alpha/tlsb/tlsb.c    | 14 +++++++++-----
 sys/arch/alpha/tlsb/tlsbvar.h |  6 +++++-
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/sys/arch/alpha/tlsb/tlsb.c b/sys/arch/alpha/tlsb/tlsb.c
index 5635aaa3be3e..3134b935874c 100644
--- a/sys/arch/alpha/tlsb/tlsb.c
+++ b/sys/arch/alpha/tlsb/tlsb.c
@@ -1,4 +1,4 @@
-/* $NetBSD: tlsb.c,v 1.10 1998/05/14 00:01:32 thorpej Exp $ */
+/* $NetBSD: tlsb.c,v 1.11 1998/07/08 00:47:53 mjacob Exp $ */
 
 /*
  * Copyright (c) 1997 by Matthew Jacob
@@ -40,7 +40,7 @@
 
 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
 
-__KERNEL_RCSID(0, "$NetBSD: tlsb.c,v 1.10 1998/05/14 00:01:32 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tlsb.c,v 1.11 1998/07/08 00:47:53 mjacob Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -73,7 +73,7 @@ static int	tlsbprint __P((void *, const char *));
 static int	tlsbsubmatch __P((struct device *, struct cfdata *, void *));
 static char	*tlsb_node_type_str __P((u_int32_t));
 
-/* There can be only one. */
+/* There can be only one, and we'll overload it with a bitmap of found nodes */
 int	tlsb_found;
 
 static int
@@ -146,8 +146,6 @@ tlsbattach(parent, self, aux)
 
 	printf("\n");
 
-	tlsb_found = 1;
-
 	/*
 	 * Attempt to find all devices on the bus, including
 	 * CPUs, memory modules, and I/O modules.
@@ -173,6 +171,12 @@ tlsbattach(parent, self, aux)
 			/* Nothing at this node. */
 			continue;
 		}
+		/*
+		 * Store up that we found something at this node.
+		 * We do this so that we don't have to do something
+		 * silly at fault time like try a 'baddadr'...
+		 */
+		tlsb_found |= (1 << node);
 		if (TLDEV_ISIOPORT(tldev))
 			continue;	/* not interested right now */
 		ta.ta_node = node;
diff --git a/sys/arch/alpha/tlsb/tlsbvar.h b/sys/arch/alpha/tlsb/tlsbvar.h
index 5a15c7016a8a..98ba8f7ba840 100644
--- a/sys/arch/alpha/tlsb/tlsbvar.h
+++ b/sys/arch/alpha/tlsb/tlsbvar.h
@@ -1,4 +1,4 @@
-/* $NetBSD: tlsbvar.h,v 1.5 1998/05/13 23:23:23 thorpej Exp $ */
+/* $NetBSD: tlsbvar.h,v 1.6 1998/07/08 00:47:53 mjacob Exp $ */
 
 /*
  * Copyright (c) 1997 by Matthew Jacob
@@ -57,3 +57,7 @@ struct tlsb_cpu_busdep {
 	u_int8_t	tcpu_vid;	/* virtual ID of CPU */
 	int		tcpu_node;	/* TurboLaser node */
 };
+
+#ifdef	_KERNEL
+extern int tlsb_found;
+#endif