drivers/video/tegra/nvmap/nvmap_heap.h

   1 /*
   2  * drivers/video/tegra/nvmap_heap.h
   3  *
   4  * GPU heap allocator.
   5  *
   6  * Copyright (c) 2010, NVIDIA Corporation.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  21  */
  22
  23 #ifndef __NVMAP_HEAP_H
  24 #define __NVMAP_HEAP_H
  25
  26 struct device;
  27 struct nvmap_heap;
  28 struct attribute_group;
  29
  30 struct nvmap_heap_block {
  31         unsigned long   base;
  32         unsigned int    type;
  33 };
  34
  35 #define NVMAP_HEAP_MIN_BUDDY_SIZE       8192
  36
  37 struct nvmap_heap *nvmap_heap_create(struct device *parent, const char *name,
  38                                      unsigned long base, size_t len,
  39                                      unsigned int buddy_size, void *arg);
  40
  41 void nvmap_heap_destroy(struct nvmap_heap *heap);
  42
  43 void *nvmap_heap_device_to_arg(struct device *dev);
  44
  45 void *nvmap_heap_to_arg(struct nvmap_heap *heap);
  46
  47 struct nvmap_heap_block *nvmap_heap_alloc(struct nvmap_heap *heap, size_t len,
  48                                           size_t align, unsigned int prot);
  49
  50 struct nvmap_heap *nvmap_block_to_heap(struct nvmap_heap_block *b);
  51
  52 void nvmap_heap_free(struct nvmap_heap_block *block);
  53
  54 int nvmap_heap_create_group(struct nvmap_heap *heap,
  55                             const struct attribute_group *grp);
  56
  57 void nvmap_heap_remove_group(struct nvmap_heap *heap,
  58                              const struct attribute_group *grp);
  59
  60 int __init nvmap_heap_init(void);
  61
  62 void nvmap_heap_deinit(void);
  63
  64 #endif