1 /* $NetBSD: nouveau_nvkm_subdev_fault_user.c,v 1.3 2021/12/19 10:51:58 riastradh Exp $ */
2
3 /*
4 * Copyright 2018 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24 #include <sys/cdefs.h>
25 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fault_user.c,v 1.3 2021/12/19 10:51:58 riastradh Exp $");
26
27 #include "priv.h"
28
29 #include <core/memory.h>
30 #include <subdev/mmu.h>
31
32 #include <nvif/clb069.h>
33 #include <nvif/unpack.h>
34
35 static int
36 #ifdef __NetBSD__
nvkm_ufault_map(struct nvkm_object * object,void * argv,u32 argc,enum nvkm_object_map * type,bus_space_tag_t * tag,u64 * addr,u64 * size)37 nvkm_ufault_map(struct nvkm_object *object, void *argv, u32 argc,
38 enum nvkm_object_map *type,
39 bus_space_tag_t *tag, u64 *addr, u64 *size)
40 #else
41 nvkm_ufault_map(struct nvkm_object *object, void *argv, u32 argc,
42 enum nvkm_object_map *type, u64 *addr, u64 *size)
43 #endif
44 {
45 struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
46 struct nvkm_device *device = buffer->fault->subdev.device;
47 *type = NVKM_OBJECT_MAP_IO;
48 #ifdef __NetBSD__
49 *tag = device->func->resource_tag(device, 3);
50 #endif
51 *addr = device->func->resource_addr(device, 3) + buffer->addr;
52 *size = nvkm_memory_size(buffer->mem);
53 return 0;
54 }
55
56 static int
nvkm_ufault_ntfy(struct nvkm_object * object,u32 type,struct nvkm_event ** pevent)57 nvkm_ufault_ntfy(struct nvkm_object *object, u32 type,
58 struct nvkm_event **pevent)
59 {
60 struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
61 if (type == NVB069_V0_NTFY_FAULT) {
62 *pevent = &buffer->fault->event;
63 return 0;
64 }
65 return -EINVAL;
66 }
67
68 static int
nvkm_ufault_fini(struct nvkm_object * object,bool suspend)69 nvkm_ufault_fini(struct nvkm_object *object, bool suspend)
70 {
71 struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
72 buffer->fault->func->buffer.fini(buffer);
73 return 0;
74 }
75
76 static int
nvkm_ufault_init(struct nvkm_object * object)77 nvkm_ufault_init(struct nvkm_object *object)
78 {
79 struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
80 buffer->fault->func->buffer.init(buffer);
81 return 0;
82 }
83
84 static void *
nvkm_ufault_dtor(struct nvkm_object * object)85 nvkm_ufault_dtor(struct nvkm_object *object)
86 {
87 return NULL;
88 }
89
90 static const struct nvkm_object_func
91 nvkm_ufault = {
92 .dtor = nvkm_ufault_dtor,
93 .init = nvkm_ufault_init,
94 .fini = nvkm_ufault_fini,
95 .ntfy = nvkm_ufault_ntfy,
96 .map = nvkm_ufault_map,
97 };
98
99 int
nvkm_ufault_new(struct nvkm_device * device,const struct nvkm_oclass * oclass,void * argv,u32 argc,struct nvkm_object ** pobject)100 nvkm_ufault_new(struct nvkm_device *device, const struct nvkm_oclass *oclass,
101 void *argv, u32 argc, struct nvkm_object **pobject)
102 {
103 union {
104 struct nvif_clb069_v0 v0;
105 } *args = argv;
106 struct nvkm_fault *fault = device->fault;
107 struct nvkm_fault_buffer *buffer = fault->buffer[fault->func->user.rp];
108 int ret = -ENOSYS;
109
110 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
111 args->v0.entries = buffer->entries;
112 args->v0.get = buffer->get;
113 args->v0.put = buffer->put;
114 } else
115 return ret;
116
117 nvkm_object_ctor(&nvkm_ufault, oclass, &buffer->object);
118 *pobject = &buffer->object;
119 return 0;
120 }
121