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  1. /**************************************************************************
  2.  *
  3.  * Copyright © 2012 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. #ifndef _VMWGFX_RESOURCE_PRIV_H_
  29. #define _VMWGFX_RESOURCE_PRIV_H_
  30.  
  31. #include "vmwgfx_drv.h"
  32.  
  33. /**
  34.  * struct vmw_user_resource_conv - Identify a derived user-exported resource
  35.  * type and provide a function to convert its ttm_base_object pointer to
  36.  * a struct vmw_resource
  37.  */
  38. struct vmw_user_resource_conv {
  39.         enum ttm_object_type object_type;
  40.         struct vmw_resource *(*base_obj_to_res)(struct ttm_base_object *base);
  41.         void (*res_free) (struct vmw_resource *res);
  42. };
  43.  
  44. /**
  45.  * struct vmw_res_func - members and functions common for a resource type
  46.  *
  47.  * @res_type:          Enum that identifies the lru list to use for eviction.
  48.  * @needs_backup:      Whether the resource is guest-backed and needs
  49.  *                     persistent buffer storage.
  50.  * @type_name:         String that identifies the resource type.
  51.  * @backup_placement:  TTM placement for backup buffers.
  52.  * @may_evict          Whether the resource may be evicted.
  53.  * @create:            Create a hardware resource.
  54.  * @destroy:           Destroy a hardware resource.
  55.  * @bind:              Bind a hardware resource to persistent buffer storage.
  56.  * @unbind:            Unbind a hardware resource from persistent
  57.  *                     buffer storage.
  58.  */
  59.  
  60. struct vmw_res_func {
  61.         enum vmw_res_type res_type;
  62.         bool needs_backup;
  63.         const char *type_name;
  64.         struct ttm_placement *backup_placement;
  65.         bool may_evict;
  66.  
  67.         int (*create) (struct vmw_resource *res);
  68.         int (*destroy) (struct vmw_resource *res);
  69.         int (*bind) (struct vmw_resource *res,
  70.                      struct ttm_validate_buffer *val_buf);
  71.         int (*unbind) (struct vmw_resource *res,
  72.                        bool readback,
  73.                        struct ttm_validate_buffer *val_buf);
  74. };
  75.  
  76. int vmw_resource_alloc_id(struct vmw_resource *res);
  77. void vmw_resource_release_id(struct vmw_resource *res);
  78. int vmw_resource_init(struct vmw_private *dev_priv, struct vmw_resource *res,
  79.                       bool delay_id,
  80.                       void (*res_free) (struct vmw_resource *res),
  81.                       const struct vmw_res_func *func);
  82. void vmw_resource_activate(struct vmw_resource *res,
  83.                            void (*hw_destroy) (struct vmw_resource *));
  84. #endif
  85.