1 | /* $NetBSD: nouveau_core_namedb.c,v 1.1.1.1 2014/08/06 12:36:23 riastradh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2012 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 | * Authors: Ben Skeggs |
25 | */ |
26 | |
27 | #include <sys/cdefs.h> |
28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_core_namedb.c,v 1.1.1.1 2014/08/06 12:36:23 riastradh Exp $" ); |
29 | |
30 | #include <core/object.h> |
31 | #include <core/namedb.h> |
32 | #include <core/handle.h> |
33 | #include <core/gpuobj.h> |
34 | |
35 | static struct nouveau_handle * |
36 | nouveau_namedb_lookup(struct nouveau_namedb *namedb, u32 name) |
37 | { |
38 | struct nouveau_handle *handle; |
39 | |
40 | list_for_each_entry(handle, &namedb->list, node) { |
41 | if (handle->name == name) |
42 | return handle; |
43 | } |
44 | |
45 | return NULL; |
46 | } |
47 | |
48 | static struct nouveau_handle * |
49 | nouveau_namedb_lookup_class(struct nouveau_namedb *namedb, u16 oclass) |
50 | { |
51 | struct nouveau_handle *handle; |
52 | |
53 | list_for_each_entry(handle, &namedb->list, node) { |
54 | if (nv_mclass(handle->object) == oclass) |
55 | return handle; |
56 | } |
57 | |
58 | return NULL; |
59 | } |
60 | |
61 | static struct nouveau_handle * |
62 | nouveau_namedb_lookup_vinst(struct nouveau_namedb *namedb, u64 vinst) |
63 | { |
64 | struct nouveau_handle *handle; |
65 | |
66 | list_for_each_entry(handle, &namedb->list, node) { |
67 | if (nv_iclass(handle->object, NV_GPUOBJ_CLASS)) { |
68 | if (nv_gpuobj(handle->object)->addr == vinst) |
69 | return handle; |
70 | } |
71 | } |
72 | |
73 | return NULL; |
74 | } |
75 | |
76 | static struct nouveau_handle * |
77 | nouveau_namedb_lookup_cinst(struct nouveau_namedb *namedb, u32 cinst) |
78 | { |
79 | struct nouveau_handle *handle; |
80 | |
81 | list_for_each_entry(handle, &namedb->list, node) { |
82 | if (nv_iclass(handle->object, NV_GPUOBJ_CLASS)) { |
83 | if (nv_gpuobj(handle->object)->node && |
84 | nv_gpuobj(handle->object)->node->offset == cinst) |
85 | return handle; |
86 | } |
87 | } |
88 | |
89 | return NULL; |
90 | } |
91 | |
92 | int |
93 | nouveau_namedb_insert(struct nouveau_namedb *namedb, u32 name, |
94 | struct nouveau_object *object, |
95 | struct nouveau_handle *handle) |
96 | { |
97 | int ret = -EEXIST; |
98 | write_lock_irq(&namedb->lock); |
99 | if (!nouveau_namedb_lookup(namedb, name)) { |
100 | nouveau_object_ref(object, &handle->object); |
101 | handle->namedb = namedb; |
102 | list_add(&handle->node, &namedb->list); |
103 | ret = 0; |
104 | } |
105 | write_unlock_irq(&namedb->lock); |
106 | return ret; |
107 | } |
108 | |
109 | void |
110 | nouveau_namedb_remove(struct nouveau_handle *handle) |
111 | { |
112 | struct nouveau_namedb *namedb = handle->namedb; |
113 | struct nouveau_object *object = handle->object; |
114 | write_lock_irq(&namedb->lock); |
115 | list_del(&handle->node); |
116 | write_unlock_irq(&namedb->lock); |
117 | nouveau_object_ref(NULL, &object); |
118 | } |
119 | |
120 | struct nouveau_handle * |
121 | nouveau_namedb_get(struct nouveau_namedb *namedb, u32 name) |
122 | { |
123 | struct nouveau_handle *handle; |
124 | read_lock(&namedb->lock); |
125 | handle = nouveau_namedb_lookup(namedb, name); |
126 | if (handle == NULL) |
127 | read_unlock(&namedb->lock); |
128 | return handle; |
129 | } |
130 | |
131 | struct nouveau_handle * |
132 | nouveau_namedb_get_class(struct nouveau_namedb *namedb, u16 oclass) |
133 | { |
134 | struct nouveau_handle *handle; |
135 | read_lock(&namedb->lock); |
136 | handle = nouveau_namedb_lookup_class(namedb, oclass); |
137 | if (handle == NULL) |
138 | read_unlock(&namedb->lock); |
139 | return handle; |
140 | } |
141 | |
142 | struct nouveau_handle * |
143 | nouveau_namedb_get_vinst(struct nouveau_namedb *namedb, u64 vinst) |
144 | { |
145 | struct nouveau_handle *handle; |
146 | read_lock(&namedb->lock); |
147 | handle = nouveau_namedb_lookup_vinst(namedb, vinst); |
148 | if (handle == NULL) |
149 | read_unlock(&namedb->lock); |
150 | return handle; |
151 | } |
152 | |
153 | struct nouveau_handle * |
154 | nouveau_namedb_get_cinst(struct nouveau_namedb *namedb, u32 cinst) |
155 | { |
156 | struct nouveau_handle *handle; |
157 | read_lock(&namedb->lock); |
158 | handle = nouveau_namedb_lookup_cinst(namedb, cinst); |
159 | if (handle == NULL) |
160 | read_unlock(&namedb->lock); |
161 | return handle; |
162 | } |
163 | |
164 | void |
165 | nouveau_namedb_put(struct nouveau_handle *handle) |
166 | { |
167 | if (handle) |
168 | read_unlock(&handle->namedb->lock); |
169 | } |
170 | |
171 | int |
172 | nouveau_namedb_create_(struct nouveau_object *parent, |
173 | struct nouveau_object *engine, |
174 | struct nouveau_oclass *oclass, u32 pclass, |
175 | struct nouveau_oclass *sclass, u64 engcls, |
176 | int length, void **pobject) |
177 | { |
178 | struct nouveau_namedb *namedb; |
179 | int ret; |
180 | |
181 | ret = nouveau_parent_create_(parent, engine, oclass, pclass | |
182 | NV_NAMEDB_CLASS, sclass, engcls, |
183 | length, pobject); |
184 | namedb = *pobject; |
185 | if (ret) |
186 | return ret; |
187 | |
188 | rwlock_init(&namedb->lock); |
189 | INIT_LIST_HEAD(&namedb->list); |
190 | return 0; |
191 | } |
192 | |
193 | int |
194 | _nouveau_namedb_ctor(struct nouveau_object *parent, |
195 | struct nouveau_object *engine, |
196 | struct nouveau_oclass *oclass, void *data, u32 size, |
197 | struct nouveau_object **pobject) |
198 | { |
199 | struct nouveau_namedb *object; |
200 | int ret; |
201 | |
202 | ret = nouveau_namedb_create(parent, engine, oclass, 0, NULL, 0, &object); |
203 | *pobject = nv_object(object); |
204 | if (ret) |
205 | return ret; |
206 | |
207 | return 0; |
208 | } |
209 | |