Date: Tue, 5 Mar 2013 09:27:21 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r247834 - in head/sys: dev/drm2 modules/drm2/drm2 Message-ID: <201303050927.r259RLDH014246@svn.freebsd.org>
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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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