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notify.h revision 1.3 
      1 /*	$NetBSD: notify.h,v 1.3 2021/12/18 23:45:33 riastradh Exp $	*/
      2 
      3 /* SPDX-License-Identifier: MIT */
      4 #ifndef __NVIF_NOTIFY_H__
      5 #define __NVIF_NOTIFY_H__
      6 
      7 struct nvif_notify {
      8 	struct nvif_object *object;
      9 	int index;
     10 
     11 #define NVIF_NOTIFY_USER 0
     12 #define NVIF_NOTIFY_WORK 1
     13 	unsigned long flags;
     14 	atomic_t putcnt;
     15 	void (*dtor)(struct nvif_notify *);
     16 #define NVIF_NOTIFY_DROP 0
     17 #define NVIF_NOTIFY_KEEP 1
     18 	int  (*func)(struct nvif_notify *);
     19 
     20 	/* this is const for a *very* good reason - the data might be on the
     21 	 * stack from an irq handler.  if you're not nvif/notify.c then you
     22 	 * should probably think twice before casting it away...
     23 	 */
     24 	const void *data;
     25 	u32 size;
     26 	struct work_struct work;
     27 };
     28 
     29 int  nvif_notify_init(struct nvif_object *, int (*func)(struct nvif_notify *),
     30 		      bool work, u8 type, void *data, u32 size, u32 reply,
     31 		      struct nvif_notify *);
     32 int  nvif_notify_fini(struct nvif_notify *);
     33 int  nvif_notify_get(struct nvif_notify *);
     34 int  nvif_notify_put(struct nvif_notify *);
     35 int  nvif_notify(const void *, u32, const void *, u32);
     36 #endif
     37