drivers/gpu/drm/nouveau/include/nvkm/subdev/instmem.h

   1 #ifndef __NVKM_INSTMEM_H__
   2 #define __NVKM_INSTMEM_H__
   3 #include <core/subdev.h>
   4
   5 struct nvkm_instobj {
   6         struct nvkm_object base;
   7         struct list_head head;
   8         u32 *suspend;
   9         u64 addr;
  10         u32 size;
  11 };
  12
  13 static inline struct nvkm_instobj *
  14 nv_memobj(void *obj)
  15 {
  16 #if CONFIG_NOUVEAU_DEBUG >= NV_DBG_PARANOIA
  17         if (unlikely(!nv_iclass(obj, NV_MEMOBJ_CLASS)))
  18                 nv_assert("BAD CAST -> NvMemObj, %08x", nv_hclass(obj));
  19 #endif
  20         return obj;
  21 }
  22
  23 struct nvkm_instmem {
  24         struct nvkm_subdev base;
  25         struct list_head list;
  26
  27         u32 reserved;
  28         int (*alloc)(struct nvkm_instmem *, struct nvkm_object *,
  29                      u32 size, u32 align, struct nvkm_object **);
  30 };
  31
  32 static inline struct nvkm_instmem *
  33 nvkm_instmem(void *obj)
  34 {
  35         /* nv04/nv40 impls need to create objects in their constructor,
  36          * which is before the subdev pointer is valid
  37          */
  38         if (nv_iclass(obj, NV_SUBDEV_CLASS) &&
  39             nv_subidx(obj) == NVDEV_SUBDEV_INSTMEM)
  40                 return obj;
  41
  42         return (void *)nvkm_subdev(obj, NVDEV_SUBDEV_INSTMEM);
  43 }
  44
  45 extern struct nvkm_oclass *nv04_instmem_oclass;
  46 extern struct nvkm_oclass *nv40_instmem_oclass;
  47 extern struct nvkm_oclass *nv50_instmem_oclass;
  48 #endif