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      1 /*	$NetBSD: nouveau_nvkm_engine_sw_nvsw.c,v 1.3 2021/12/18 23:45:37 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2015 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Ben Skeggs <bskeggs (at) redhat.com>
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_sw_nvsw.c,v 1.3 2021/12/18 23:45:37 riastradh Exp $");
     28 
     29 #include "nvsw.h"
     30 #include "chan.h"
     31 
     32 #include <nvif/if0004.h>
     33 
     34 static int
     35 nvkm_nvsw_mthd_(struct nvkm_object *object, u32 mthd, void *data, u32 size)
     36 {
     37 	struct nvkm_nvsw *nvsw = nvkm_nvsw(object);
     38 	if (nvsw->func->mthd)
     39 		return nvsw->func->mthd(nvsw, mthd, data, size);
     40 	return -ENODEV;
     41 }
     42 
     43 static int
     44 nvkm_nvsw_ntfy_(struct nvkm_object *object, u32 mthd,
     45 		struct nvkm_event **pevent)
     46 {
     47 	struct nvkm_nvsw *nvsw = nvkm_nvsw(object);
     48 	switch (mthd) {
     49 	case NV04_NVSW_NTFY_UEVENT:
     50 		*pevent = &nvsw->chan->event;
     51 		return 0;
     52 	default:
     53 		break;
     54 	}
     55 	return -EINVAL;
     56 }
     57 
     58 static const struct nvkm_object_func
     59 nvkm_nvsw_ = {
     60 	.mthd = nvkm_nvsw_mthd_,
     61 	.ntfy = nvkm_nvsw_ntfy_,
     62 };
     63 
     64 int
     65 nvkm_nvsw_new_(const struct nvkm_nvsw_func *func, struct nvkm_sw_chan *chan,
     66 	       const struct nvkm_oclass *oclass, void *data, u32 size,
     67 	       struct nvkm_object **pobject)
     68 {
     69 	struct nvkm_nvsw *nvsw;
     70 
     71 	if (!(nvsw = kzalloc(sizeof(*nvsw), GFP_KERNEL)))
     72 		return -ENOMEM;
     73 	*pobject = &nvsw->object;
     74 
     75 	nvkm_object_ctor(&nvkm_nvsw_, oclass, &nvsw->object);
     76 	nvsw->func = func;
     77 	nvsw->chan = chan;
     78 	return 0;
     79 }
     80 
     81 static const struct nvkm_nvsw_func
     82 nvkm_nvsw = {
     83 };
     84 
     85 int
     86 nvkm_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass,
     87 	      void *data, u32 size, struct nvkm_object **pobject)
     88 {
     89 	return nvkm_nvsw_new_(&nvkm_nvsw, chan, oclass, data, size, pobject);
     90 }
     91