1 files changed, 99 insertions, 0 deletions
diff --git a/usr/src/uts/common/io/drm/drm_kstat.c b/usr/src/uts/common/io/drm/drm_kstat.c
new file mode 100644
index 0000000..23e51fe
--- /dev/null
+++ b/usr/src/uts/common/io/drm/drm_kstat.c
@@ -0,0 +1,99 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc.
+ * All rights reserved.  Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include "drmP.h"
+#include <sys/kstat.h>
+#include <sys/ddi.h>
+#include <sys/sunddi.h>
+#include <sys/sunldi.h>
+
+static char *drmkstat_name[] = {
+	"opens",
+	"closes",
+	"IOCTLs",
+	"locks",
+	"unlocks",
+	NULL
+};
+
+static int
+drm_kstat_update(kstat_t *ksp, int flag)
+{
+	drm_device_t *sc;
+	kstat_named_t *knp;
+	int tmp;
+
+	if (flag != KSTAT_READ)
+		return (EACCES);
+
+	sc = ksp->ks_private;
+	knp = ksp->ks_data;
+
+	for (tmp = 1; tmp < 6; tmp++) {
+		(knp++)->value.ui32 = sc->counts[tmp];
+	}
+
+	return (0);
+}
+
+int
+drm_init_kstats(drm_device_t *sc)
+{
+	int instance;
+	kstat_t *ksp;
+	kstat_named_t *knp;
+	char *np;
+	char **aknp;
+
+	instance = ddi_get_instance(sc->dip);
+	aknp = drmkstat_name;
+	ksp = kstat_create("drm", instance, "drminfo", "drm",
+	    KSTAT_TYPE_NAMED, sizeof (drmkstat_name)/sizeof (char *) - 1,
+	    KSTAT_FLAG_PERSISTENT);
+	if (ksp == NULL)
+		return (NULL);
+
+	ksp->ks_private = sc;
+	ksp->ks_update = drm_kstat_update;
+	for (knp = ksp->ks_data; (np = (*aknp)) != NULL; knp++, aknp++) {
+		kstat_named_init(knp, np, KSTAT_DATA_UINT32);
+	}
+	kstat_install(ksp);
+
+	sc->asoft_ksp = ksp;
+
+	return (0);
+}
+
+void
+drm_fini_kstats(drm_device_t *sc)
+{
+	if (sc->asoft_ksp)
+		kstat_delete(sc->asoft_ksp);
+	else
+		cmn_err(CE_WARN, "attempt to delete null kstat");
+}