nvkm/core/notify.h

0001 /* SPDX-License-Identifier: MIT */
0002 #ifndef __NVKM_NOTIFY_H__
0003 #define __NVKM_NOTIFY_H__
0004 #include <core/os.h>
0005 struct nvkm_object;
0006
0007 struct nvkm_notify {
0008     struct nvkm_event *event;
0009     struct list_head head;
0010 #define NVKM_NOTIFY_USER 0
0011 #define NVKM_NOTIFY_WORK 1
0012     unsigned long flags;
0013     int block;
0014 #define NVKM_NOTIFY_DROP 0
0015 #define NVKM_NOTIFY_KEEP 1
0016     int (*func)(struct nvkm_notify *);
0017
0018     /* set by nvkm_event ctor */
0019     u32 types;
0020     int index;
0021     u32 size;
0022
0023     struct work_struct work;
0024     /* this is const for a *very* good reason - the data might be on the
0025      * stack from an irq handler.  if you're not core/notify.c then you
0026      * should probably think twice before casting it away...
0027      */
0028     const void *data;
0029 };
0030
0031 int  nvkm_notify_init(struct nvkm_object *, struct nvkm_event *,
0032               int (*func)(struct nvkm_notify *), bool work,
0033               void *data, u32 size, u32 reply,
0034               struct nvkm_notify *);
0035 void nvkm_notify_fini(struct nvkm_notify *);
0036 void nvkm_notify_get(struct nvkm_notify *);
0037 void nvkm_notify_put(struct nvkm_notify *);
0038 void nvkm_notify_send(struct nvkm_notify *, void *data, u32 size);
0039 #endif