diff options
Diffstat (limited to 'include/drm/drm_mm.h')
| -rw-r--r-- | include/drm/drm_mm.h | 56 |
1 files changed, 44 insertions, 12 deletions
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h index bf01531193d5..564b14aa7e16 100644 --- a/include/drm/drm_mm.h +++ b/include/drm/drm_mm.h @@ -42,33 +42,58 @@ #endif struct drm_mm_node { - struct list_head free_stack; struct list_head node_list; - unsigned free : 1; + struct list_head hole_stack; + unsigned hole_follows : 1; unsigned scanned_block : 1; unsigned scanned_prev_free : 1; unsigned scanned_next_free : 1; + unsigned scanned_preceeds_hole : 1; + unsigned allocated : 1; unsigned long start; unsigned long size; struct drm_mm *mm; }; struct drm_mm { - /* List of free memory blocks, most recently freed ordered. */ - struct list_head free_stack; - /* List of all memory nodes, ordered according to the (increasing) start - * address of the memory node. */ - struct list_head node_list; + /* List of all memory nodes that immediately precede a free hole. */ + struct list_head hole_stack; + /* head_node.node_list is the list of all memory nodes, ordered + * according to the (increasing) start address of the memory node. */ + struct drm_mm_node head_node; struct list_head unused_nodes; int num_unused; spinlock_t unused_lock; + unsigned int scan_check_range : 1; unsigned scan_alignment; unsigned long scan_size; unsigned long scan_hit_start; unsigned scan_hit_size; unsigned scanned_blocks; + unsigned long scan_start; + unsigned long scan_end; + struct drm_mm_node *prev_scanned_node; }; +static inline bool drm_mm_node_allocated(struct drm_mm_node *node) +{ + return node->allocated; +} + +static inline bool drm_mm_initialized(struct drm_mm *mm) +{ + return mm->hole_stack.next; +} +#define drm_mm_for_each_node(entry, mm) list_for_each_entry(entry, \ + &(mm)->head_node.node_list, \ + node_list) +#define drm_mm_for_each_scanned_node_reverse(entry, n, mm) \ + for (entry = (mm)->prev_scanned_node, \ + next = entry ? list_entry(entry->node_list.next, \ + struct drm_mm_node, node_list) : NULL; \ + entry != NULL; entry = next, \ + next = entry ? list_entry(entry->node_list.next, \ + struct drm_mm_node, node_list) : NULL) \ /* * Basic range manager support (drm_mm.c) */ @@ -115,7 +140,15 @@ static inline struct drm_mm_node *drm_mm_get_block_atomic_range( return drm_mm_get_block_range_generic(parent, size, alignment, start, end, 1); } +extern int drm_mm_insert_node(struct drm_mm *mm, struct drm_mm_node *node, + unsigned long size, unsigned alignment); +extern int drm_mm_insert_node_in_range(struct drm_mm *mm, + struct drm_mm_node *node, + unsigned long size, unsigned alignment, + unsigned long start, unsigned long end); extern void drm_mm_put_block(struct drm_mm_node *cur); +extern void drm_mm_remove_node(struct drm_mm_node *node); +extern void drm_mm_replace_node(struct drm_mm_node *old, struct drm_mm_node *new); extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, unsigned long size, unsigned alignment, @@ -131,11 +164,6 @@ extern int drm_mm_init(struct drm_mm *mm, unsigned long start, unsigned long size); extern void drm_mm_takedown(struct drm_mm *mm); extern int drm_mm_clean(struct drm_mm *mm); -extern unsigned long drm_mm_tail_space(struct drm_mm *mm); -extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, - unsigned long size); -extern int drm_mm_add_space_to_tail(struct drm_mm *mm, - unsigned long size, int atomic); extern int drm_mm_pre_get(struct drm_mm *mm); static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) @@ -145,6 +173,10 @@ static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) void drm_mm_init_scan(struct drm_mm *mm, unsigned long size, unsigned alignment); +void drm_mm_init_scan_with_range(struct drm_mm *mm, unsigned long size, + unsigned alignment, + unsigned long start, + unsigned long end); int drm_mm_scan_add_block(struct drm_mm_node *node); int drm_mm_scan_remove_block(struct drm_mm_node *node); |