Author: kib
Date: Tue Mar 5 09:27:21 2013
New Revision: 247834
URL: http://svnweb.freebsd.org/changeset/base/247834
Log:
Import the drm_global references helpers.
Sponsored by: The FreeBSD Foundation
MFC after: 1 month
Added:
head/sys/dev/drm2/drm_global.c (contents, props changed)
head/sys/dev/drm2/drm_global.h (contents, props changed)
Modified:
head/sys/modules/drm2/drm2/Makefile
Added: head/sys/dev/drm2/drm_global.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/drm2/drm_global.c Tue Mar 5 09:27:21 2013
(r247834)
@@ -0,0 +1,109 @@
+/**************************************************************************
+ *
+ * Copyright 2008-2009 VMware, Inc., Palo Alto, CA., USA
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+/*
+ * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <dev/drm2/drmP.h>
+#include <dev/drm2/drm_global.h>
+
+MALLOC_DEFINE(M_DRM_GLOBAL, "drm_global", "DRM Global Items");
+
+struct drm_global_item {
+ struct sx mutex;
+ void *object;
+ int refcount;
+};
+
+static struct drm_global_item glob[DRM_GLOBAL_NUM];
+
+void drm_global_init(void)
+{
+ int i;
+
+ for (i = 0; i < DRM_GLOBAL_NUM; ++i) {
+ struct drm_global_item *item = &glob[i];
+ sx_init(&item->mutex, "drmgi");
+ item->object = NULL;
+ item->refcount = 0;
+ }
+}
+
+void drm_global_release(void)
+{
+ int i;
+ for (i = 0; i < DRM_GLOBAL_NUM; ++i) {
+ struct drm_global_item *item = &glob[i];
+ MPASS(item->object == NULL);
+ MPASS(item->refcount == 0);
+ }
+}
+
+int drm_global_item_ref(struct drm_global_reference *ref)
+{
+ int ret;
+ struct drm_global_item *item = &glob[ref->global_type];
+ void *object;
+
+ sx_xlock(&item->mutex);
+ if (item->refcount == 0) {
+ item->object = malloc(ref->size, M_DRM_GLOBAL,
+ M_WAITOK | M_ZERO);
+
+ ref->object = item->object;
+ ret = ref->init(ref);
+ if (unlikely(ret != 0))
+ goto out_err;
+
+ }
+ ++item->refcount;
+ ref->object = item->object;
+ object = item->object;
+ sx_xunlock(&item->mutex);
+ return 0;
+out_err:
+ sx_xunlock(&item->mutex);
+ item->object = NULL;
+ return ret;
+}
+
+void drm_global_item_unref(struct drm_global_reference *ref)
+{
+ struct drm_global_item *item = &glob[ref->global_type];
+
+ sx_xlock(&item->mutex);
+ MPASS(item->refcount != 0);
+ MPASS(ref->object == item->object);
+ if (--item->refcount == 0) {
+ ref->release(ref);
+ item->object = NULL;
+ }
+ sx_xunlock(&item->mutex);
+}
Added: head/sys/dev/drm2/drm_global.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/drm2/drm_global.h Tue Mar 5 09:27:21 2013
(r247834)
@@ -0,0 +1,56 @@
+/**************************************************************************
+ *
+ * Copyright 2008-2009 VMware, Inc., Palo Alto, CA., USA
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+/*
+ * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
+ */
+/* $FreeBSD$ */
+
+#ifndef _DRM_GLOBAL_H_
+#define _DRM_GLOBAL_H_
+enum drm_global_types {
+ DRM_GLOBAL_TTM_MEM = 0,
+ DRM_GLOBAL_TTM_BO,
+ DRM_GLOBAL_TTM_OBJECT,
+ DRM_GLOBAL_NUM
+};
+
+struct drm_global_reference {
+ enum drm_global_types global_type;
+ size_t size;
+ void *object;
+ int (*init) (struct drm_global_reference *);
+ void (*release) (struct drm_global_reference *);
+};
+
+extern void drm_global_init(void);
+extern void drm_global_release(void);
+extern int drm_global_item_ref(struct drm_global_reference *ref);
+extern void drm_global_item_unref(struct drm_global_reference *ref);
+
+MALLOC_DECLARE(M_DRM_GLOBAL);
+
+#endif
Modified: head/sys/modules/drm2/drm2/Makefile
==============================================================================
--- head/sys/modules/drm2/drm2/Makefile Tue Mar 5 09:07:58 2013
(r247833)
+++ head/sys/modules/drm2/drm2/Makefile Tue Mar 5 09:27:21 2013
(r247834)
@@ -18,6 +18,7 @@ SRCS = \
drm_fops.c \
drm_gem.c \
drm_gem_names.c \
+ drm_global.c \
drm_hashtab.c \
drm_ioctl.c \
drm_irq.c \
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