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 <core/event.h>
 26#include <subdev/mmu.h>
 27
 28#include <nvif/clb069.h>
 29#include <nvif/unpack.h>
 30
 31static int
 32nvkm_ufault_uevent(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_uevent *uevent)
 33{
 34	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
 35	union nvif_clb069_event_args *args = argv;
 36
 37	if (!uevent)
 38		return 0;
 39	if (argc != sizeof(args->vn))
 40		return -ENOSYS;
 41
 42	return nvkm_uevent_add(uevent, &buffer->fault->event, buffer->id,
 43			       NVKM_FAULT_BUFFER_EVENT_PENDING, NULL);
 44}
 45
 46static int
 47nvkm_ufault_map(struct nvkm_object *object, void *argv, u32 argc,
 48		enum nvkm_object_map *type, u64 *addr, u64 *size)
 49{
 50	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
 51	struct nvkm_device *device = buffer->fault->subdev.device;
 52	*type = NVKM_OBJECT_MAP_IO;
 53	*addr = device->func->resource_addr(device, 3) + buffer->addr;
 54	*size = nvkm_memory_size(buffer->mem);
 55	return 0;
 56}
 57
 58static int
 59nvkm_ufault_fini(struct nvkm_object *object, bool suspend)
 60{
 61	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
 62	buffer->fault->func->buffer.fini(buffer);
 63	return 0;
 64}
 65
 66static int
 67nvkm_ufault_init(struct nvkm_object *object)
 68{
 69	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
 70	buffer->fault->func->buffer.init(buffer);
 71	return 0;
 72}
 73
 74static void *
 75nvkm_ufault_dtor(struct nvkm_object *object)
 76{
 77	return NULL;
 78}
 79
 80static const struct nvkm_object_func
 81nvkm_ufault = {
 82	.dtor = nvkm_ufault_dtor,
 83	.init = nvkm_ufault_init,
 84	.fini = nvkm_ufault_fini,
 85	.map = nvkm_ufault_map,
 86	.uevent = nvkm_ufault_uevent,
 87};
 88
 89int
 90nvkm_ufault_new(struct nvkm_device *device, const struct nvkm_oclass *oclass,
 91		void *argv, u32 argc, struct nvkm_object **pobject)
 92{
 93	union {
 94		struct nvif_clb069_v0 v0;
 95	} *args = argv;
 96	struct nvkm_fault *fault = device->fault;
 97	struct nvkm_fault_buffer *buffer = fault->buffer[fault->func->user.rp];
 98	int ret = -ENOSYS;
 99
100	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
101		args->v0.entries = buffer->entries;
102		args->v0.get = buffer->get;
103		args->v0.put = buffer->put;
104	} else
105		return ret;
106
107	nvkm_object_ctor(&nvkm_ufault, oclass, &buffer->object);
108	*pobject = &buffer->object;
109	return 0;
110}