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      1 /*	$NetBSD: nouveau_nvif_user.c,v 1.2 2021/12/18 23:45:33 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2018 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 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvif_user.c,v 1.2 2021/12/18 23:45:33 riastradh Exp $");
     26 
     27 #include <nvif/user.h>
     28 #include <nvif/device.h>
     29 
     30 #include <nvif/class.h>
     31 
     32 void
     33 nvif_user_fini(struct nvif_device *device)
     34 {
     35 	if (device->user.func) {
     36 		nvif_object_fini(&device->user.object);
     37 		device->user.func = NULL;
     38 	}
     39 }
     40 
     41 int
     42 nvif_user_init(struct nvif_device *device)
     43 {
     44 	struct {
     45 		s32 oclass;
     46 		int version;
     47 		const struct nvif_user_func *func;
     48 	} users[] = {
     49 		{ VOLTA_USERMODE_A, -1, &nvif_userc361 },
     50 		{}
     51 	};
     52 	int cid, ret;
     53 
     54 	if (device->user.func)
     55 		return 0;
     56 
     57 	cid = nvif_mclass(&device->object, users);
     58 	if (cid < 0)
     59 		return cid;
     60 
     61 	ret = nvif_object_init(&device->object, 0, users[cid].oclass, NULL, 0,
     62 			       &device->user.object);
     63 	if (ret)
     64 		return ret;
     65 
     66 	nvif_object_map(&device->user.object, NULL, 0);
     67 	device->user.func = users[cid].func;
     68 	return 0;
     69 }
     70