drivers/gpu/drm/nouveau/nouveau_mm.h

   1 /*
   2  * Copyright 2010 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24
  25 #ifndef __NOUVEAU_REGION_H__
  26 #define __NOUVEAU_REGION_H__
  27
  28 struct nouveau_mm_node {
  29         struct list_head nl_entry;
  30         struct list_head fl_entry;
  31         struct list_head rl_entry;
  32
  33         bool free;
  34         int  type;
  35
  36         u32 offset;
  37         u32 length;
  38 };
  39
  40 struct nouveau_mm {
  41         struct list_head nodes;
  42         struct list_head free;
  43
  44         struct mutex mutex;
  45
  46         u32 block_size;
  47 };
  48
  49 int  nouveau_mm_init(struct nouveau_mm **, u32 offset, u32 length, u32 block);
  50 int  nouveau_mm_fini(struct nouveau_mm **);
  51 int  nouveau_mm_pre(struct nouveau_mm *);
  52 int  nouveau_mm_get(struct nouveau_mm *, int type, u32 size, u32 size_nc,
  53                     u32 align, struct nouveau_mm_node **);
  54 void nouveau_mm_put(struct nouveau_mm *, struct nouveau_mm_node *);
  55
  56 int  nv50_vram_init(struct drm_device *);
  57 int  nv50_vram_new(struct drm_device *, u64 size, u32 align, u32 size_nc,
  58                     u32 memtype, struct nouveau_vram **);
  59 void nv50_vram_del(struct drm_device *, struct nouveau_vram **);
  60 bool nv50_vram_flags_valid(struct drm_device *, u32 tile_flags);
  61
  62 #endif