drivers/gpu/drm/nouveau/nvkm/subdev/fault/user.c

   1 /*
   2  * Copyright 2018 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 #include <core/memory.h>
  25 #include <subdev/mmu.h>
  26
  27 #include <nvif/clb069.h>
  28 #include <nvif/unpack.h>
  29
  30 static int
  31 nvkm_ufault_map(struct nvkm_object *object, void *argv, u32 argc,
  32                 enum nvkm_object_map *type, u64 *addr, u64 *size)
  33 {
  34         struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
  35         struct nvkm_device *device = buffer->fault->subdev.device;
  36         *type = NVKM_OBJECT_MAP_IO;
  37         *addr = device->func->resource_addr(device, 3) + buffer->addr;
  38         *size = nvkm_memory_size(buffer->mem);
  39         return 0;
  40 }
  41
  42 static int
  43 nvkm_ufault_ntfy(struct nvkm_object *object, u32 type,
  44                  struct nvkm_event **pevent)
  45 {
  46         struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
  47         if (type == NVB069_V0_NTFY_FAULT) {
  48                 *pevent = &buffer->fault->event;
  49                 return 0;
  50         }
  51         return -EINVAL;
  52 }
  53
  54 static int
  55 nvkm_ufault_fini(struct nvkm_object *object, bool suspend)
  56 {
  57         struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
  58         buffer->fault->func->buffer.fini(buffer);
  59         return 0;
  60 }
  61
  62 static int
  63 nvkm_ufault_init(struct nvkm_object *object)
  64 {
  65         struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
  66         buffer->fault->func->buffer.init(buffer);
  67         return 0;
  68 }
  69
  70 static void *
  71 nvkm_ufault_dtor(struct nvkm_object *object)
  72 {
  73         return NULL;
  74 }
  75
  76 static const struct nvkm_object_func
  77 nvkm_ufault = {
  78         .dtor = nvkm_ufault_dtor,
  79         .init = nvkm_ufault_init,
  80         .fini = nvkm_ufault_fini,
  81         .ntfy = nvkm_ufault_ntfy,
  82         .map = nvkm_ufault_map,
  83 };
  84
  85 int
  86 nvkm_ufault_new(struct nvkm_device *device, const struct nvkm_oclass *oclass,
  87                 void *argv, u32 argc, struct nvkm_object **pobject)
  88 {
  89         union {
  90                 struct nvif_clb069_v0 v0;
  91         } *args = argv;
  92         struct nvkm_fault *fault = device->fault;
  93         struct nvkm_fault_buffer *buffer = fault->buffer[fault->func->user.rp];
  94         int ret = -ENOSYS;
  95
  96         if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
  97                 args->v0.entries = buffer->entries;
  98                 args->v0.get = buffer->get;
  99                 args->v0.put = buffer->put;
 100         } else
 101                 return ret;
 102
 103         nvkm_object_ctor(&nvkm_ufault, oclass, &buffer->object);
 104         *pobject = &buffer->object;
 105         return 0;
 106 }