drivers/gpu/drm/nouveau/include/nvkm/core/notify.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NVKM_NOTIFY_H__
   3 #define __NVKM_NOTIFY_H__
   4 #include <core/os.h>
   5 struct nvkm_object;
   6
   7 struct nvkm_notify {
   8         struct nvkm_event *event;
   9         struct list_head head;
  10 #define NVKM_NOTIFY_USER 0
  11 #define NVKM_NOTIFY_WORK 1
  12         unsigned long flags;
  13         int block;
  14 #define NVKM_NOTIFY_DROP 0
  15 #define NVKM_NOTIFY_KEEP 1
  16         int (*func)(struct nvkm_notify *);
  17
  18         /* set by nvkm_event ctor */
  19         u32 types;
  20         int index;
  21         u32 size;
  22
  23         struct work_struct work;
  24         /* this is const for a *very* good reason - the data might be on the
  25          * stack from an irq handler.  if you're not core/notify.c then you
  26          * should probably think twice before casting it away...
  27          */
  28         const void *data;
  29 };
  30
  31 int  nvkm_notify_init(struct nvkm_object *, struct nvkm_event *,
  32                       int (*func)(struct nvkm_notify *), bool work,
  33                       void *data, u32 size, u32 reply,
  34                       struct nvkm_notify *);
  35 void nvkm_notify_fini(struct nvkm_notify *);
  36 void nvkm_notify_get(struct nvkm_notify *);
  37 void nvkm_notify_put(struct nvkm_notify *);
  38 void nvkm_notify_send(struct nvkm_notify *, void *data, u32 size);
  39 #endif