/*
* Generic range manager structs
*/
+#include <linux/bug.h>
+#include <linux/kernel.h>
#include <linux/list.h>
+#include <linux/spinlock.h>
#ifdef CONFIG_DEBUG_FS
#include <linux/seq_file.h>
#endif
+enum drm_mm_search_flags {
+ DRM_MM_SEARCH_DEFAULT = 0,
+ DRM_MM_SEARCH_BEST = 1 << 0,
+};
+
struct drm_mm_node {
struct list_head node_list;
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_color;
#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) \
/* Note that we need to unroll list_for_each_entry in order to inline
* setting hole_start and hole_end on each iteration and keep the
/*
* Basic range manager support (drm_mm.c)
*/
-extern struct drm_mm_node *drm_mm_create_block(struct drm_mm *mm,
- unsigned long start,
- unsigned long size,
- bool atomic);
-extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node,
- unsigned long size,
- unsigned alignment,
- unsigned long color,
- int atomic);
-extern struct drm_mm_node *drm_mm_get_block_range_generic(
- struct drm_mm_node *node,
- unsigned long size,
- unsigned alignment,
- unsigned long color,
- unsigned long start,
- unsigned long end,
- int atomic);
-static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent,
- unsigned long size,
- unsigned alignment)
-{
- return drm_mm_get_block_generic(parent, size, alignment, 0, 0);
-}
-static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent,
- unsigned long size,
- unsigned alignment)
-{
- return drm_mm_get_block_generic(parent, size, alignment, 0, 1);
-}
-static inline struct drm_mm_node *drm_mm_get_block_range(
- struct drm_mm_node *parent,
- unsigned long size,
- unsigned alignment,
- unsigned long start,
- unsigned long end)
-{
- return drm_mm_get_block_range_generic(parent, size, alignment, 0,
- start, end, 0);
-}
-static inline struct drm_mm_node *drm_mm_get_block_atomic_range(
- struct drm_mm_node *parent,
- unsigned long size,
- unsigned alignment,
- unsigned long start,
- unsigned long end)
-{
- return drm_mm_get_block_range_generic(parent, size, alignment, 0,
- start, end, 1);
-}
+extern int drm_mm_reserve_node(struct drm_mm *mm, struct drm_mm_node *node);
-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 int drm_mm_insert_node_generic(struct drm_mm *mm,
struct drm_mm_node *node,
unsigned long size,
unsigned alignment,
- unsigned long color);
+ unsigned long color,
+ enum drm_mm_search_flags flags);
+static inline int drm_mm_insert_node(struct drm_mm *mm,
+ struct drm_mm_node *node,
+ unsigned long size,
+ unsigned alignment,
+ enum drm_mm_search_flags flags)
+{
+ return drm_mm_insert_node_generic(mm, node, size, alignment, 0, flags);
+}
+
extern int drm_mm_insert_node_in_range_generic(struct drm_mm *mm,
struct drm_mm_node *node,
unsigned long size,
unsigned alignment,
unsigned long color,
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_generic(const struct drm_mm *mm,
- unsigned long size,
- unsigned alignment,
- unsigned long color,
- bool best_match);
-extern struct drm_mm_node *drm_mm_search_free_in_range_generic(
- const struct drm_mm *mm,
- unsigned long size,
- unsigned alignment,
- unsigned long color,
- unsigned long start,
- unsigned long end,
- bool best_match);
-static inline struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm,
- unsigned long size,
- unsigned alignment,
- bool best_match)
+ unsigned long end,
+ enum drm_mm_search_flags flags);
+static inline 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,
+ enum drm_mm_search_flags flags)
{
- return drm_mm_search_free_generic(mm,size, alignment, 0, best_match);
-}
-static inline struct drm_mm_node *drm_mm_search_free_in_range(
- const struct drm_mm *mm,
- unsigned long size,
- unsigned alignment,
- unsigned long start,
- unsigned long end,
- bool best_match)
-{
- return drm_mm_search_free_in_range_generic(mm, size, alignment, 0,
- start, end, best_match);
+ return drm_mm_insert_node_in_range_generic(mm, node, size, alignment,
+ 0, start, end, flags);
}
+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 void 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 int drm_mm_pre_get(struct drm_mm *mm);
-
-static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block)
-{
- return block->mm;
-}
void drm_mm_init_scan(struct drm_mm *mm,
unsigned long size,
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