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      1 /*	$NetBSD: nouveau_nvkm_subdev_bus_base.c,v 1.3 2021/12/18 23:45:38 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_subdev_bus_base.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $");
     28 
     29 #include "priv.h"
     30 
     31 static void
     32 nvkm_bus_intr(struct nvkm_subdev *subdev)
     33 {
     34 	struct nvkm_bus *bus = nvkm_bus(subdev);
     35 	bus->func->intr(bus);
     36 }
     37 
     38 static int
     39 nvkm_bus_init(struct nvkm_subdev *subdev)
     40 {
     41 	struct nvkm_bus *bus = nvkm_bus(subdev);
     42 	bus->func->init(bus);
     43 	return 0;
     44 }
     45 
     46 static void *
     47 nvkm_bus_dtor(struct nvkm_subdev *subdev)
     48 {
     49 	return nvkm_bus(subdev);
     50 }
     51 
     52 static const struct nvkm_subdev_func
     53 nvkm_bus = {
     54 	.dtor = nvkm_bus_dtor,
     55 	.init = nvkm_bus_init,
     56 	.intr = nvkm_bus_intr,
     57 };
     58 
     59 int
     60 nvkm_bus_new_(const struct nvkm_bus_func *func, struct nvkm_device *device,
     61 	      int index, struct nvkm_bus **pbus)
     62 {
     63 	struct nvkm_bus *bus;
     64 	if (!(bus = *pbus = kzalloc(sizeof(*bus), GFP_KERNEL)))
     65 		return -ENOMEM;
     66 	nvkm_subdev_ctor(&nvkm_bus, device, index, &bus->subdev);
     67 	bus->func = func;
     68 	return 0;
     69 }
     70