LXR linux/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
  30static int
  31nvkm_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
  42static int
  43nvkm_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
  54static int
  55nvkm_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
  62static int
  63nvkm_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
  70static void *
  71nvkm_ufault_dtor(struct nvkm_object *object)
  72{
  73        return NULL;
  74}
  75
  76static const struct nvkm_object_func
  77nvkm_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
  85int
  86nvkm_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}
 107