LXR linux/drivers/gpu/drm/nouveau/include/nvkm/core/mm.h

   1#ifndef __NVKM_MM_H__
   2#define __NVKM_MM_H__
   3#include <core/os.h>
   4
   5struct nvkm_mm_node {
   6        struct list_head nl_entry;
   7        struct list_head fl_entry;
   8        struct nvkm_mm_node *next;
   9
  10#define NVKM_MM_HEAP_ANY 0x00
  11        u8  heap;
  12#define NVKM_MM_TYPE_NONE 0x00
  13#define NVKM_MM_TYPE_HOLE 0xff
  14        u8  type;
  15        u32 offset;
  16        u32 length;
  17};
  18
  19struct nvkm_mm {
  20        struct list_head nodes;
  21        struct list_head free;
  22
  23        u32 block_size;
  24        int heap_nodes;
  25};
  26
  27static inline bool
  28nvkm_mm_initialised(struct nvkm_mm *mm)
  29{
  30        return mm->heap_nodes;
  31}
  32
  33int  nvkm_mm_init(struct nvkm_mm *, u32 offset, u32 length, u32 block);
  34int  nvkm_mm_fini(struct nvkm_mm *);
  35int  nvkm_mm_head(struct nvkm_mm *, u8 heap, u8 type, u32 size_max,
  36                  u32 size_min, u32 align, struct nvkm_mm_node **);
  37int  nvkm_mm_tail(struct nvkm_mm *, u8 heap, u8 type, u32 size_max,
  38                  u32 size_min, u32 align, struct nvkm_mm_node **);
  39void nvkm_mm_free(struct nvkm_mm *, struct nvkm_mm_node **);
  40void nvkm_mm_dump(struct nvkm_mm *, const char *);
  41
  42static inline bool
  43nvkm_mm_contiguous(struct nvkm_mm_node *node)
  44{
  45        return !node->next;
  46}
  47#endif
  48