drivers/gpu/drm/nouveau/include/nvif/notify.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NVIF_NOTIFY_H__
   3 #define __NVIF_NOTIFY_H__
   4
   5 struct nvif_notify {
   6         struct nvif_object *object;
   7         int index;
   8
   9 #define NVIF_NOTIFY_USER 0
  10 #define NVIF_NOTIFY_WORK 1
  11         unsigned long flags;
  12         atomic_t putcnt;
  13         void (*dtor)(struct nvif_notify *);
  14 #define NVIF_NOTIFY_DROP 0
  15 #define NVIF_NOTIFY_KEEP 1
  16         int  (*func)(struct nvif_notify *);
  17
  18         /* this is const for a *very* good reason - the data might be on the
  19          * stack from an irq handler.  if you're not nvif/notify.c then you
  20          * should probably think twice before casting it away...
  21          */
  22         const void *data;
  23         u32 size;
  24         struct work_struct work;
  25 };
  26
  27 int  nvif_notify_init(struct nvif_object *, int (*func)(struct nvif_notify *),
  28                       bool work, u8 type, void *data, u32 size, u32 reply,
  29                       struct nvif_notify *);
  30 int  nvif_notify_fini(struct nvif_notify *);
  31 int  nvif_notify_get(struct nvif_notify *);
  32 int  nvif_notify_put(struct nvif_notify *);
  33 int  nvif_notify(const void *, u32, const void *, u32);
  34 #endif