1 /*
2 * Copyright 2012 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 * Authors: Ben Skeggs
23 */
24 #include <core/namedb.h>
25 #include <core/gpuobj.h>
26 #include <core/handle.h>
27
28 static struct nvkm_handle *
nvkm_namedb_lookup(struct nvkm_namedb * namedb,u32 name)29 nvkm_namedb_lookup(struct nvkm_namedb *namedb, u32 name)
30 {
31 struct nvkm_handle *handle;
32
33 list_for_each_entry(handle, &namedb->list, node) {
34 if (handle->name == name)
35 return handle;
36 }
37
38 return NULL;
39 }
40
41 static struct nvkm_handle *
nvkm_namedb_lookup_class(struct nvkm_namedb * namedb,u16 oclass)42 nvkm_namedb_lookup_class(struct nvkm_namedb *namedb, u16 oclass)
43 {
44 struct nvkm_handle *handle;
45
46 list_for_each_entry(handle, &namedb->list, node) {
47 if (nv_mclass(handle->object) == oclass)
48 return handle;
49 }
50
51 return NULL;
52 }
53
54 static struct nvkm_handle *
nvkm_namedb_lookup_vinst(struct nvkm_namedb * namedb,u64 vinst)55 nvkm_namedb_lookup_vinst(struct nvkm_namedb *namedb, u64 vinst)
56 {
57 struct nvkm_handle *handle;
58
59 list_for_each_entry(handle, &namedb->list, node) {
60 if (nv_iclass(handle->object, NV_GPUOBJ_CLASS)) {
61 if (nv_gpuobj(handle->object)->addr == vinst)
62 return handle;
63 }
64 }
65
66 return NULL;
67 }
68
69 static struct nvkm_handle *
nvkm_namedb_lookup_cinst(struct nvkm_namedb * namedb,u32 cinst)70 nvkm_namedb_lookup_cinst(struct nvkm_namedb *namedb, u32 cinst)
71 {
72 struct nvkm_handle *handle;
73
74 list_for_each_entry(handle, &namedb->list, node) {
75 if (nv_iclass(handle->object, NV_GPUOBJ_CLASS)) {
76 if (nv_gpuobj(handle->object)->node &&
77 nv_gpuobj(handle->object)->node->offset == cinst)
78 return handle;
79 }
80 }
81
82 return NULL;
83 }
84
85 int
nvkm_namedb_insert(struct nvkm_namedb * namedb,u32 name,struct nvkm_object * object,struct nvkm_handle * handle)86 nvkm_namedb_insert(struct nvkm_namedb *namedb, u32 name,
87 struct nvkm_object *object,
88 struct nvkm_handle *handle)
89 {
90 int ret = -EEXIST;
91 write_lock_irq(&namedb->lock);
92 if (!nvkm_namedb_lookup(namedb, name)) {
93 nvkm_object_ref(object, &handle->object);
94 handle->namedb = namedb;
95 list_add(&handle->node, &namedb->list);
96 ret = 0;
97 }
98 write_unlock_irq(&namedb->lock);
99 return ret;
100 }
101
102 void
nvkm_namedb_remove(struct nvkm_handle * handle)103 nvkm_namedb_remove(struct nvkm_handle *handle)
104 {
105 struct nvkm_namedb *namedb = handle->namedb;
106 struct nvkm_object *object = handle->object;
107 write_lock_irq(&namedb->lock);
108 list_del(&handle->node);
109 write_unlock_irq(&namedb->lock);
110 nvkm_object_ref(NULL, &object);
111 }
112
113 struct nvkm_handle *
nvkm_namedb_get(struct nvkm_namedb * namedb,u32 name)114 nvkm_namedb_get(struct nvkm_namedb *namedb, u32 name)
115 {
116 struct nvkm_handle *handle;
117 read_lock(&namedb->lock);
118 handle = nvkm_namedb_lookup(namedb, name);
119 if (handle == NULL)
120 read_unlock(&namedb->lock);
121 return handle;
122 }
123
124 struct nvkm_handle *
nvkm_namedb_get_class(struct nvkm_namedb * namedb,u16 oclass)125 nvkm_namedb_get_class(struct nvkm_namedb *namedb, u16 oclass)
126 {
127 struct nvkm_handle *handle;
128 read_lock(&namedb->lock);
129 handle = nvkm_namedb_lookup_class(namedb, oclass);
130 if (handle == NULL)
131 read_unlock(&namedb->lock);
132 return handle;
133 }
134
135 struct nvkm_handle *
nvkm_namedb_get_vinst(struct nvkm_namedb * namedb,u64 vinst)136 nvkm_namedb_get_vinst(struct nvkm_namedb *namedb, u64 vinst)
137 {
138 struct nvkm_handle *handle;
139 read_lock(&namedb->lock);
140 handle = nvkm_namedb_lookup_vinst(namedb, vinst);
141 if (handle == NULL)
142 read_unlock(&namedb->lock);
143 return handle;
144 }
145
146 struct nvkm_handle *
nvkm_namedb_get_cinst(struct nvkm_namedb * namedb,u32 cinst)147 nvkm_namedb_get_cinst(struct nvkm_namedb *namedb, u32 cinst)
148 {
149 struct nvkm_handle *handle;
150 read_lock(&namedb->lock);
151 handle = nvkm_namedb_lookup_cinst(namedb, cinst);
152 if (handle == NULL)
153 read_unlock(&namedb->lock);
154 return handle;
155 }
156
157 void
nvkm_namedb_put(struct nvkm_handle * handle)158 nvkm_namedb_put(struct nvkm_handle *handle)
159 {
160 if (handle)
161 read_unlock(&handle->namedb->lock);
162 }
163
164 int
nvkm_namedb_create_(struct nvkm_object * parent,struct nvkm_object * engine,struct nvkm_oclass * oclass,u32 pclass,struct nvkm_oclass * sclass,u64 engcls,int length,void ** pobject)165 nvkm_namedb_create_(struct nvkm_object *parent, struct nvkm_object *engine,
166 struct nvkm_oclass *oclass, u32 pclass,
167 struct nvkm_oclass *sclass, u64 engcls,
168 int length, void **pobject)
169 {
170 struct nvkm_namedb *namedb;
171 int ret;
172
173 ret = nvkm_parent_create_(parent, engine, oclass, pclass |
174 NV_NAMEDB_CLASS, sclass, engcls,
175 length, pobject);
176 namedb = *pobject;
177 if (ret)
178 return ret;
179
180 rwlock_init(&namedb->lock);
181 INIT_LIST_HEAD(&namedb->list);
182 return 0;
183 }
184
185 int
_nvkm_namedb_ctor(struct nvkm_object * parent,struct nvkm_object * engine,struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)186 _nvkm_namedb_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
187 struct nvkm_oclass *oclass, void *data, u32 size,
188 struct nvkm_object **pobject)
189 {
190 struct nvkm_namedb *object;
191 int ret;
192
193 ret = nvkm_namedb_create(parent, engine, oclass, 0, NULL, 0, &object);
194 *pobject = nv_object(object);
195 if (ret)
196 return ret;
197
198 return 0;
199 }
200