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      1 /*	$NetBSD: nouveau_nvkm_subdev_pmu_gp102.c,v 1.2 2021/12/18 23:45:41 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2016 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_pmu_gp102.c,v 1.2 2021/12/18 23:45:41 riastradh Exp $");
     28 
     29 #include "priv.h"
     30 
     31 static void
     32 gp102_pmu_reset(struct nvkm_pmu *pmu)
     33 {
     34 	struct nvkm_device *device = pmu->subdev.device;
     35 	nvkm_mask(device, 0x10a3c0, 0x00000001, 0x00000001);
     36 	nvkm_mask(device, 0x10a3c0, 0x00000001, 0x00000000);
     37 }
     38 
     39 static bool
     40 gp102_pmu_enabled(struct nvkm_pmu *pmu)
     41 {
     42 	return !(nvkm_rd32(pmu->subdev.device, 0x10a3c0) & 0x00000001);
     43 }
     44 
     45 static const struct nvkm_pmu_func
     46 gp102_pmu = {
     47 	.flcn = &gt215_pmu_flcn,
     48 	.enabled = gp102_pmu_enabled,
     49 	.reset = gp102_pmu_reset,
     50 };
     51 
     52 static const struct nvkm_pmu_fwif
     53 gp102_pmu_fwif[] = {
     54 	{ -1, gf100_pmu_nofw, &gp102_pmu },
     55 	{}
     56 };
     57 
     58 int
     59 gp102_pmu_new(struct nvkm_device *device, int index, struct nvkm_pmu **ppmu)
     60 {
     61 	return nvkm_pmu_new_(gp102_pmu_fwif, device, index, ppmu);
     62 }
     63