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      1 /*	$NetBSD: nouveau_nvkm_subdev_mc_nv04.c,v 1.3 2021/12/18 23:45:40 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012 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
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_mc_nv04.c,v 1.3 2021/12/18 23:45:40 riastradh Exp $");
     28 
     29 #include "priv.h"
     30 
     31 const struct nvkm_mc_map
     32 nv04_mc_reset[] = {
     33 	{ 0x00001000, NVKM_ENGINE_GR },
     34 	{ 0x00000100, NVKM_ENGINE_FIFO },
     35 	{}
     36 };
     37 
     38 static const struct nvkm_mc_map
     39 nv04_mc_intr[] = {
     40 	{ 0x01010000, NVKM_ENGINE_DISP },
     41 	{ 0x00001000, NVKM_ENGINE_GR },
     42 	{ 0x00000100, NVKM_ENGINE_FIFO },
     43 	{ 0x10000000, NVKM_SUBDEV_BUS },
     44 	{ 0x00100000, NVKM_SUBDEV_TIMER },
     45 	{}
     46 };
     47 
     48 void
     49 nv04_mc_intr_unarm(struct nvkm_mc *mc)
     50 {
     51 	struct nvkm_device *device = mc->subdev.device;
     52 	nvkm_wr32(device, 0x000140, 0x00000000);
     53 	nvkm_rd32(device, 0x000140);
     54 }
     55 
     56 void
     57 nv04_mc_intr_rearm(struct nvkm_mc *mc)
     58 {
     59 	struct nvkm_device *device = mc->subdev.device;
     60 	nvkm_wr32(device, 0x000140, 0x00000001);
     61 }
     62 
     63 u32
     64 nv04_mc_intr_stat(struct nvkm_mc *mc)
     65 {
     66 	return nvkm_rd32(mc->subdev.device, 0x000100);
     67 }
     68 
     69 void
     70 nv04_mc_init(struct nvkm_mc *mc)
     71 {
     72 	struct nvkm_device *device = mc->subdev.device;
     73 	nvkm_wr32(device, 0x000200, 0xffffffff); /* everything enabled */
     74 	nvkm_wr32(device, 0x001850, 0x00000001); /* disable rom access */
     75 }
     76 
     77 static const struct nvkm_mc_func
     78 nv04_mc = {
     79 	.init = nv04_mc_init,
     80 	.intr = nv04_mc_intr,
     81 	.intr_unarm = nv04_mc_intr_unarm,
     82 	.intr_rearm = nv04_mc_intr_rearm,
     83 	.intr_stat = nv04_mc_intr_stat,
     84 	.reset = nv04_mc_reset,
     85 };
     86 
     87 int
     88 nv04_mc_new(struct nvkm_device *device, int index, struct nvkm_mc **pmc)
     89 {
     90 	return nvkm_mc_new_(&nv04_mc, device, index, pmc);
     91 }
     92