From e5512404bcf96dce5f53eed387ebe92b64b9ef3c Mon Sep 17 00:00:00 2001
From: kettenis <kettenis@openbsd.org>
Date: Fri, 11 Jul 2008 14:23:53 +0000
Subject: [PATCH] Fujitsu SPARC64-VI CPU's have two cores that have two threads
 each.  Provide a core(4) device, representing these cores and attach cpu(4)
 devices to it for each thread.

---
 sys/arch/sparc64/conf/GENERIC       |  4 +-
 sys/arch/sparc64/conf/files.sparc64 | 16 +++---
 sys/arch/sparc64/dev/core.c         | 82 +++++++++++++++++++++++++++++
 sys/arch/sparc64/sparc64/cpu.c      |  7 ++-
 4 files changed, 100 insertions(+), 9 deletions(-)
 create mode 100644 sys/arch/sparc64/dev/core.c

diff --git a/sys/arch/sparc64/conf/GENERIC b/sys/arch/sparc64/conf/GENERIC
index 07b8fe8a802..f8a8b003eb8 100644
--- a/sys/arch/sparc64/conf/GENERIC
+++ b/sys/arch/sparc64/conf/GENERIC
@@ -1,4 +1,4 @@
-#	$OpenBSD: GENERIC,v 1.215 2008/07/06 08:53:38 kettenis Exp $
+#	$OpenBSD: GENERIC,v 1.216 2008/07/11 14:23:53 kettenis Exp $
 #
 # For further information on compiling OpenBSD kernels, see the config(8)
 # man page.
@@ -35,6 +35,8 @@ cpu0	at ssm?
 cmp*	at mainbus0
 cmp*	at ssm?
 cpu0	at cmp?
+core*	at cmp?
+cpu0	at core?
 
 # Bus types found on SPARC systems.
 sbus*	at mainbus0
diff --git a/sys/arch/sparc64/conf/files.sparc64 b/sys/arch/sparc64/conf/files.sparc64
index 365e017abbb..47378f6ddd1 100644
--- a/sys/arch/sparc64/conf/files.sparc64
+++ b/sys/arch/sparc64/conf/files.sparc64
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.sparc64,v 1.109 2008/07/07 14:46:18 kettenis Exp $
+#	$OpenBSD: files.sparc64,v 1.110 2008/07/11 14:23:53 kettenis Exp $
 #	$NetBSD: files.sparc64,v 1.50 2001/08/10 20:53:50 eeh Exp $
 
 # maxpartitions must be first item in files.${ARCH}
@@ -153,14 +153,18 @@ device	eeprom
 attach	eeprom at sbus, ebus
 file	arch/sparc64/sparc64/clock.c
 
-device	cpu
-attach	cpu at mainbus
-file	arch/sparc64/sparc64/cpu.c
-
-device	cmp: mainbus
+device	cmp {}
 attach	cmp at mainbus
 file	arch/sparc64/dev/cmp.c			cmp
 
+device	core {}
+attach	core at cmp
+file	arch/sparc64/dev/core.c			core
+
+device	cpu
+attach	cpu at mainbus, cmp, core
+file	arch/sparc64/sparc64/cpu.c
+
 device	auxio
 attach	auxio at ebus with auxio_ebus
 attach	auxio at sbus with auxio_sbus
diff --git a/sys/arch/sparc64/dev/core.c b/sys/arch/sparc64/dev/core.c
new file mode 100644
index 00000000000..c958d4cf364
--- /dev/null
+++ b/sys/arch/sparc64/dev/core.c
@@ -0,0 +1,82 @@
+/*	$OpenBSD: core.c,v 1.1 2008/07/11 14:23:53 kettenis Exp $	*/
+/*
+ * Copyright (c) 2008 Mark Kettenis
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/device.h>
+#include <sys/systm.h>
+
+#include <machine/autoconf.h>
+#include <machine/openfirm.h>
+
+int	core_match(struct device *, void *, void *);
+void	core_attach(struct device *, struct device *, void *);
+
+struct cfattach core_ca = {
+	sizeof(struct device), core_match, core_attach
+};
+
+struct cfdriver core_cd = {
+	NULL, "core", DV_DULL
+};
+
+int	core_print(void *, const char *);
+
+int
+core_match(struct device *parent, void *match, void *aux)
+{
+	struct mainbus_attach_args *ma = aux;
+
+	if (strcmp(ma->ma_name, "core") == 0)
+		return (1);
+
+	return (0);
+}
+
+void
+core_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct mainbus_attach_args *ma = aux;
+	struct mainbus_attach_args nma;
+	char buf[32];
+	int node;
+
+	printf("\n");
+
+	for (node = OF_child(ma->ma_node); node; node = OF_peer(node)) {
+		if (!checkstatus(node))
+			continue;
+
+		OF_getprop(node, "name", buf, sizeof(buf));
+		if (strcmp(buf, "cpu") == 0)
+			OF_getprop(ma->ma_node, "compatible", buf, sizeof(buf));
+
+		bzero(&nma, sizeof(nma));
+		nma.ma_node = node;
+		nma.ma_name = buf;
+		config_found(self, &nma, core_print);
+	}
+}
+
+int
+core_print(void *aux, const char *name)
+{
+	struct mainbus_attach_args *ma = aux;
+
+	if (name)
+		printf("\"%s\" at %s", ma->ma_name, name);
+	return (UNCONF);
+}
diff --git a/sys/arch/sparc64/sparc64/cpu.c b/sys/arch/sparc64/sparc64/cpu.c
index 451da27f28c..589624f8ab8 100644
--- a/sys/arch/sparc64/sparc64/cpu.c
+++ b/sys/arch/sparc64/sparc64/cpu.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cpu.c,v 1.41 2008/07/11 05:20:19 kettenis Exp $	*/
+/*	$OpenBSD: cpu.c,v 1.42 2008/07/11 14:23:53 kettenis Exp $	*/
 /*	$NetBSD: cpu.c,v 1.13 2001/05/26 21:27:15 chs Exp $ */
 
 /*
@@ -241,7 +241,10 @@ cpu_attach(parent, dev, aux)
 	vers = IU_VERS(ver);
 
 	/* tell them what we have */
-	node = ma->ma_node;
+	if (strncmp(parent->dv_xname, "core", 4) == 0)
+		node = OF_parent(ma->ma_node);
+	else
+		node = ma->ma_node;
 
 	/*
 	 * Allocate cpu_info structure if needed.
-- 
2.20.1