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}
111