include/drm/ttm/ttm_module.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2008-2009 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27 /*
  28  * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
  29  */
  30
  31 #ifndef _TTM_MODULE_H_
  32 #define _TTM_MODULE_H_
  33
  34 #include <linux/kernel.h>
  35
  36 #define TTM_PFX "[TTM] "
  37
  38 enum ttm_global_types {
  39         TTM_GLOBAL_TTM_MEM = 0,
  40         TTM_GLOBAL_TTM_BO,
  41         TTM_GLOBAL_TTM_OBJECT,
  42         TTM_GLOBAL_NUM
  43 };
  44
  45 struct ttm_global_reference {
  46         enum ttm_global_types global_type;
  47         size_t size;
  48         void *object;
  49         int (*init) (struct ttm_global_reference *);
  50         void (*release) (struct ttm_global_reference *);
  51 };
  52
  53 extern void ttm_global_init(void);
  54 extern void ttm_global_release(void);
  55 extern int ttm_global_item_ref(struct ttm_global_reference *ref);
  56 extern void ttm_global_item_unref(struct ttm_global_reference *ref);
  57
  58 #endif /* _TTM_MODULE_H_ */