drivers/gpu/drm/nouveau/nvkm/subdev/top/ga100.c

   1 /*
   2  * Copyright 2021 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  */
  22 #include "priv.h"
  23
  24 static int
  25 ga100_top_oneinit(struct nvkm_top *top)
  26 {
  27         struct nvkm_subdev *subdev = &top->subdev;
  28         struct nvkm_device *device = subdev->device;
  29         struct nvkm_top_device *info = NULL;
  30         u32 data, type, inst;
  31         int i, n, size = nvkm_rd32(device, 0x0224fc) >> 20;
  32
  33         for (i = 0, n = 0; i < size; i++) {
  34                 if (!info) {
  35                         if (!(info = nvkm_top_device_new(top)))
  36                                 return -ENOMEM;
  37                         type = ~0;
  38                         inst = 0;
  39                 }
  40
  41                 data = nvkm_rd32(device, 0x022800 + (i * 0x04));
  42                 nvkm_trace(subdev, "%02x: %08x\n", i, data);
  43                 if (!data && n == 0)
  44                         continue;
  45
  46                 switch (n++) {
  47                 case 0:
  48                         type          = (data & 0x3f000000) >> 24;
  49                         inst          = (data & 0x000f0000) >> 16;
  50                         info->fault   = (data & 0x0000007f);
  51                         break;
  52                 case 1:
  53                         info->addr    = (data & 0x00fff000);
  54                         info->reset   = (data & 0x0000001f);
  55                         break;
  56                 case 2:
  57                         info->runlist = (data & 0x00fffc00);
  58                         info->engine  = (data & 0x00000003);
  59                         break;
  60                 default:
  61                         break;
  62                 }
  63
  64                 if (data & 0x80000000)
  65                         continue;
  66                 n = 0;
  67
  68                 /* Translate engine type to NVKM engine identifier. */
  69 #define I_(T,I) do { info->type = (T); info->inst = (I); } while(0)
  70 #define O_(T,I) do { WARN_ON(inst); I_(T, I); } while (0)
  71                 switch (type) {
  72                 case 0x00000000: O_(NVKM_ENGINE_GR    ,    0); break;
  73                 case 0x0000000d: O_(NVKM_ENGINE_SEC2  ,    0); break;
  74                 case 0x0000000e: I_(NVKM_ENGINE_NVENC , inst); break;
  75                 case 0x00000010: I_(NVKM_ENGINE_NVDEC , inst); break;
  76                 case 0x00000012: I_(NVKM_SUBDEV_IOCTRL, inst); break;
  77                 case 0x00000013: I_(NVKM_ENGINE_CE    , inst); break;
  78                 case 0x00000014: O_(NVKM_SUBDEV_GSP   ,    0); break;
  79                 case 0x00000015: O_(NVKM_ENGINE_NVJPG ,    0); break;
  80                 case 0x00000016: O_(NVKM_ENGINE_OFA   ,    0); break;
  81                 case 0x00000017: O_(NVKM_SUBDEV_FLA   ,    0); break;
  82                         break;
  83                 default:
  84                         break;
  85                 }
  86
  87                 nvkm_debug(subdev, "%02x.%d (%8s): addr %06x fault %2d "
  88                                    "runlist %6x engine %2d reset %2d\n", type, inst,
  89                            info->type == NVKM_SUBDEV_NR ? "????????" : nvkm_subdev_type[info->type],
  90                            info->addr, info->fault, info->runlist < 0 ? 0 : info->runlist,
  91                            info->engine, info->reset);
  92                 info = NULL;
  93         }
  94
  95         return 0;
  96 }
  97
  98 static const struct nvkm_top_func
  99 ga100_top = {
 100         .oneinit = ga100_top_oneinit,
 101 };
 102
 103 int
 104 ga100_top_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
 105               struct nvkm_top **ptop)
 106 {
 107         return nvkm_top_new_(&ga100_top, device, type, inst, ptop);
 108 }