Subversion Repositories Kolibri OS

Rev

Rev 1964 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  1. /**************************************************************************
  2.  *
  3.  * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. 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. /*
  29.  * Authors:
  30.  * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
  31.  */
  32.  
  33. #ifndef _DRM_MM_H_
  34. #define _DRM_MM_H_
  35.  
  36. /*
  37.  * Generic range manager structs
  38.  */
  39. #include <linux/list.h>
  40. #ifdef CONFIG_DEBUG_FS
  41. #include <linux/seq_file.h>
  42. #endif
  43.  
  44. struct drm_mm_node {
  45.         struct list_head fl_entry;
  46.         struct list_head ml_entry;
  47.         int free;
  48.         unsigned long start;
  49.         unsigned long size;
  50.         struct drm_mm *mm;
  51.         void *private;
  52. };
  53.  
  54. struct drm_mm {
  55.         struct list_head fl_entry;
  56.         struct list_head ml_entry;
  57.         struct list_head unused_nodes;
  58.         int num_unused;
  59.     spinlock_t unused_lock;
  60. };
  61.  
  62. /*
  63.  * Basic range manager support (drm_mm.c)
  64.  */
  65. extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node,
  66.                                                     unsigned long size,
  67.                                                     unsigned alignment,
  68.                                                     int atomic);
  69. extern struct drm_mm_node *drm_mm_get_block_range_generic(
  70.                                                 struct drm_mm_node *node,
  71.                                                 unsigned long size,
  72.                                                 unsigned alignment,
  73.                                                 unsigned long start,
  74.                                                 unsigned long end,
  75.                                                 int atomic);
  76. static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent,
  77.                                                    unsigned long size,
  78.                                                    unsigned alignment)
  79. {
  80.         return drm_mm_get_block_generic(parent, size, alignment, 0);
  81. }
  82. static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent,
  83.                                                           unsigned long size,
  84.                                                           unsigned alignment)
  85. {
  86.         return drm_mm_get_block_generic(parent, size, alignment, 1);
  87. }
  88. static inline struct drm_mm_node *drm_mm_get_block_range(
  89.                                                 struct drm_mm_node *parent,
  90.                                                 unsigned long size,
  91.                                                 unsigned alignment,
  92.                                                 unsigned long start,
  93.                                                 unsigned long end)
  94. {
  95.         return drm_mm_get_block_range_generic(parent, size, alignment,
  96.                                                 start, end, 0);
  97. }
  98. static inline struct drm_mm_node *drm_mm_get_block_atomic_range(
  99.                                                 struct drm_mm_node *parent,
  100.                                                 unsigned long size,
  101.                                                 unsigned alignment,
  102.                                                 unsigned long start,
  103.                                                 unsigned long end)
  104. {
  105.         return drm_mm_get_block_range_generic(parent, size, alignment,
  106.                                                 start, end, 1);
  107. }
  108. extern void drm_mm_put_block(struct drm_mm_node *cur);
  109. extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm,
  110.                                               unsigned long size,
  111.                                               unsigned alignment,
  112.                                               int best_match);
  113. extern struct drm_mm_node *drm_mm_search_free_in_range(
  114.                                                 const struct drm_mm *mm,
  115.                                                 unsigned long size,
  116.                                                 unsigned alignment,
  117.                                                 unsigned long start,
  118.                                                 unsigned long end,
  119.                                                 int best_match);
  120. extern int drm_mm_init(struct drm_mm *mm, unsigned long start,
  121.                        unsigned long size);
  122. extern void drm_mm_takedown(struct drm_mm *mm);
  123. extern int drm_mm_clean(struct drm_mm *mm);
  124. extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
  125. extern int drm_mm_remove_space_from_tail(struct drm_mm *mm,
  126.                                          unsigned long size);
  127. extern int drm_mm_add_space_to_tail(struct drm_mm *mm,
  128.                                     unsigned long size, int atomic);
  129. extern int drm_mm_pre_get(struct drm_mm *mm);
  130.  
  131. static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block)
  132. {
  133.         return block->mm;
  134. }
  135.  
  136. extern void drm_mm_debug_table(struct drm_mm *mm, const char *prefix);
  137. #ifdef CONFIG_DEBUG_FS
  138. int drm_mm_dump_table(struct seq_file *m, struct drm_mm *mm);
  139. #endif
  140.  
  141. #endif
  142.