drivers/gpu/drm/vmwgfx/vmwgfx_resource_priv.h

   1 /**************************************************************************
   2  *
   3  * Copyright © 2012 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  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