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      1 /*	$NetBSD: nouveau_nvkm_subdev_top_gk104.c,v 1.2 2021/12/18 23:45:42 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_top_gk104.c,v 1.2 2021/12/18 23:45:42 riastradh Exp $");
     28 
     29 #include "priv.h"
     30 
     31 static int
     32 gk104_top_oneinit(struct nvkm_top *top)
     33 {
     34 	struct nvkm_subdev *subdev = &top->subdev;
     35 	struct nvkm_device *device = subdev->device;
     36 	struct nvkm_top_device *info = NULL;
     37 	u32 data, type, inst;
     38 	int i;
     39 
     40 	for (i = 0; i < 64; i++) {
     41 		if (!info) {
     42 			if (!(info = nvkm_top_device_new(top)))
     43 				return -ENOMEM;
     44 			type = ~0;
     45 			inst = 0;
     46 		}
     47 
     48 		data = nvkm_rd32(device, 0x022700 + (i * 0x04));
     49 		nvkm_trace(subdev, "%02x: %08x\n", i, data);
     50 		switch (data & 0x00000003) {
     51 		case 0x00000000: /* NOT_VALID */
     52 			continue;
     53 		case 0x00000001: /* DATA */
     54 			inst        = (data & 0x3c000000) >> 26;
     55 			info->addr  = (data & 0x00fff000);
     56 			if (data & 0x00000004)
     57 				info->fault = (data & 0x000003f8) >> 3;
     58 			break;
     59 		case 0x00000002: /* ENUM */
     60 			if (data & 0x00000020)
     61 				info->engine  = (data & 0x3c000000) >> 26;
     62 			if (data & 0x00000010)
     63 				info->runlist = (data & 0x01e00000) >> 21;
     64 			if (data & 0x00000008)
     65 				info->intr    = (data & 0x000f8000) >> 15;
     66 			if (data & 0x00000004)
     67 				info->reset   = (data & 0x00003e00) >> 9;
     68 			break;
     69 		case 0x00000003: /* ENGINE_TYPE */
     70 			type = (data & 0x7ffffffc) >> 2;
     71 			break;
     72 		}
     73 
     74 		if (data & 0x80000000)
     75 			continue;
     76 
     77 		/* Translate engine type to NVKM engine identifier. */
     78 #define A_(A) if (inst == 0) info->index = NVKM_ENGINE_##A
     79 #define B_(A) if (inst + NVKM_ENGINE_##A##0 < NVKM_ENGINE_##A##_LAST + 1)      \
     80 		info->index = NVKM_ENGINE_##A##0 + inst
     81 #define C_(A) if (inst == 0) info->index = NVKM_SUBDEV_##A
     82 		switch (type) {
     83 		case 0x00000000: A_(GR    ); break;
     84 		case 0x00000001: A_(CE0   ); break;
     85 		case 0x00000002: A_(CE1   ); break;
     86 		case 0x00000003: A_(CE2   ); break;
     87 		case 0x00000008: A_(MSPDEC); break;
     88 		case 0x00000009: A_(MSPPP ); break;
     89 		case 0x0000000a: A_(MSVLD ); break;
     90 		case 0x0000000b: A_(MSENC ); break;
     91 		case 0x0000000c: A_(VIC   ); break;
     92 		case 0x0000000d: A_(SEC2  ); break;
     93 		case 0x0000000e: B_(NVENC ); break;
     94 		case 0x0000000f: A_(NVENC1); break;
     95 		case 0x00000010: B_(NVDEC ); break;
     96 		case 0x00000013: B_(CE    ); break;
     97 		case 0x00000014: C_(GSP   ); break;
     98 			break;
     99 		default:
    100 			break;
    101 		}
    102 
    103 		nvkm_debug(subdev, "%02x.%d (%8s): addr %06x fault %2d "
    104 				   "engine %2d runlist %2d intr %2d "
    105 				   "reset %2d\n", type, inst,
    106 			   info->index == NVKM_SUBDEV_NR ? NULL :
    107 					  nvkm_subdev_name[info->index],
    108 			   info->addr, info->fault, info->engine, info->runlist,
    109 			   info->intr, info->reset);
    110 		info = NULL;
    111 	}
    112 
    113 	return 0;
    114 }
    115 
    116 static const struct nvkm_top_func
    117 gk104_top = {
    118 	.oneinit = gk104_top_oneinit,
    119 };
    120 
    121 int
    122 gk104_top_new(struct nvkm_device *device, int index, struct nvkm_top **ptop)
    123 {
    124 	return nvkm_top_new_(&gk104_top, device, index, ptop);
    125 }
    126