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      1 /*	$NetBSD: notify.h,v 1.3 2021/12/18 23:45:33 riastradh Exp $	*/
      2 
      3 /* SPDX-License-Identifier: MIT */
      4 #ifndef __NVKM_NOTIFY_H__
      5 #define __NVKM_NOTIFY_H__
      6 #include <core/os.h>
      7 struct nvkm_object;
      8 
      9 struct nvkm_notify {
     10 	struct nvkm_event *event;
     11 	struct list_head head;
     12 #define NVKM_NOTIFY_USER 0
     13 #define NVKM_NOTIFY_WORK 1
     14 	unsigned long flags;
     15 	int block;
     16 #define NVKM_NOTIFY_DROP 0
     17 #define NVKM_NOTIFY_KEEP 1
     18 	int (*func)(struct nvkm_notify *);
     19 
     20 	/* set by nvkm_event ctor */
     21 	u32 types;
     22 	int index;
     23 	u32 size;
     24 
     25 	struct work_struct work;
     26 	/* this is const for a *very* good reason - the data might be on the
     27 	 * stack from an irq handler.  if you're not core/notify.c then you
     28 	 * should probably think twice before casting it away...
     29 	 */
     30 	const void *data;
     31 };
     32 
     33 int  nvkm_notify_init(struct nvkm_object *, struct nvkm_event *,
     34 		      int (*func)(struct nvkm_notify *), bool work,
     35 		      void *data, u32 size, u32 reply,
     36 		      struct nvkm_notify *);
     37 void nvkm_notify_fini(struct nvkm_notify *);
     38 void nvkm_notify_get(struct nvkm_notify *);
     39 void nvkm_notify_put(struct nvkm_notify *);
     40 void nvkm_notify_send(struct nvkm_notify *, void *data, u32 size);
     41 #endif
     42