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      1 /*	$NetBSD: nouveau_nvkm_subdev_ibus_gp10b.c,v 1.2 2021/12/18 23:45:40 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
      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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     22  * DEALINGS IN THE SOFTWARE.
     23  */
     24 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_ibus_gp10b.c,v 1.2 2021/12/18 23:45:40 riastradh Exp $");
     26 
     27 #include <subdev/ibus.h>
     28 
     29 #include "priv.h"
     30 
     31 static int
     32 gp10b_ibus_init(struct nvkm_subdev *ibus)
     33 {
     34 	struct nvkm_device *device = ibus->device;
     35 
     36 	nvkm_wr32(device, 0x1200a8, 0x0);
     37 
     38 	/* init ring */
     39 	nvkm_wr32(device, 0x12004c, 0x4);
     40 	nvkm_wr32(device, 0x122204, 0x2);
     41 	nvkm_rd32(device, 0x122204);
     42 
     43 	/* timeout configuration */
     44 	nvkm_wr32(device, 0x009080, 0x800186a0);
     45 
     46 	return 0;
     47 }
     48 
     49 static const struct nvkm_subdev_func
     50 gp10b_ibus = {
     51 	.init = gp10b_ibus_init,
     52 	.intr = gk104_ibus_intr,
     53 };
     54 
     55 int
     56 gp10b_ibus_new(struct nvkm_device *device, int index,
     57 	       struct nvkm_subdev **pibus)
     58 {
     59 	struct nvkm_subdev *ibus;
     60 	if (!(ibus = *pibus = kzalloc(sizeof(*ibus), GFP_KERNEL)))
     61 		return -ENOMEM;
     62 	nvkm_subdev_ctor(&gp10b_ibus, device, index, ibus);
     63 	return 0;
     64 }
     65