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d0ee7a13 GA |
1 | /* |
2 | * QEMU Crypto Device Implementation | |
3 | * | |
4 | * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. | |
5 | * | |
6 | * Authors: | |
7 | * Gonglei <arei.gonglei@huawei.com> | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Lesser General Public | |
11 | * License as published by the Free Software Foundation; either | |
12 | * version 2 of the License, or (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. | |
21 | * | |
22 | */ | |
23 | ||
24 | #include "qemu/osdep.h" | |
25 | #include "sysemu/cryptodev.h" | |
26 | #include "hw/boards.h" | |
27 | #include "qapi/error.h" | |
28 | #include "qapi/visitor.h" | |
d0ee7a13 GA |
29 | #include "qapi-visit.h" |
30 | #include "qemu/config-file.h" | |
31 | #include "qom/object_interfaces.h" | |
d6634ac0 GA |
32 | #include "hw/virtio/virtio-crypto.h" |
33 | ||
d0ee7a13 GA |
34 | |
35 | static QTAILQ_HEAD(, CryptoDevBackendClient) crypto_clients; | |
36 | ||
37 | ||
38 | CryptoDevBackendClient * | |
39 | cryptodev_backend_new_client(const char *model, | |
40 | const char *name) | |
41 | { | |
42 | CryptoDevBackendClient *cc; | |
43 | ||
44 | cc = g_malloc0(sizeof(CryptoDevBackendClient)); | |
45 | cc->model = g_strdup(model); | |
46 | if (name) { | |
47 | cc->name = g_strdup(name); | |
48 | } | |
49 | ||
50 | QTAILQ_INSERT_TAIL(&crypto_clients, cc, next); | |
51 | ||
52 | return cc; | |
53 | } | |
54 | ||
55 | void cryptodev_backend_free_client( | |
56 | CryptoDevBackendClient *cc) | |
57 | { | |
58 | QTAILQ_REMOVE(&crypto_clients, cc, next); | |
59 | g_free(cc->name); | |
60 | g_free(cc->model); | |
61 | g_free(cc->info_str); | |
62 | g_free(cc); | |
63 | } | |
64 | ||
65 | void cryptodev_backend_cleanup( | |
66 | CryptoDevBackend *backend, | |
67 | Error **errp) | |
68 | { | |
69 | CryptoDevBackendClass *bc = | |
70 | CRYPTODEV_BACKEND_GET_CLASS(backend); | |
71 | ||
72 | if (bc->cleanup) { | |
73 | bc->cleanup(backend, errp); | |
74 | } | |
d0ee7a13 GA |
75 | } |
76 | ||
9e4f86a8 GA |
77 | int64_t cryptodev_backend_sym_create_session( |
78 | CryptoDevBackend *backend, | |
79 | CryptoDevBackendSymSessionInfo *sess_info, | |
80 | uint32_t queue_index, Error **errp) | |
81 | { | |
82 | CryptoDevBackendClass *bc = | |
83 | CRYPTODEV_BACKEND_GET_CLASS(backend); | |
84 | ||
85 | if (bc->create_session) { | |
86 | return bc->create_session(backend, sess_info, queue_index, errp); | |
87 | } | |
88 | ||
89 | return -1; | |
90 | } | |
91 | ||
92 | int cryptodev_backend_sym_close_session( | |
93 | CryptoDevBackend *backend, | |
94 | uint64_t session_id, | |
95 | uint32_t queue_index, Error **errp) | |
96 | { | |
97 | CryptoDevBackendClass *bc = | |
98 | CRYPTODEV_BACKEND_GET_CLASS(backend); | |
99 | ||
100 | if (bc->close_session) { | |
101 | return bc->close_session(backend, session_id, queue_index, errp); | |
102 | } | |
103 | ||
104 | return -1; | |
105 | } | |
106 | ||
d6634ac0 | 107 | static int cryptodev_backend_sym_operation( |
9e4f86a8 GA |
108 | CryptoDevBackend *backend, |
109 | CryptoDevBackendSymOpInfo *op_info, | |
110 | uint32_t queue_index, Error **errp) | |
111 | { | |
112 | CryptoDevBackendClass *bc = | |
113 | CRYPTODEV_BACKEND_GET_CLASS(backend); | |
114 | ||
115 | if (bc->do_sym_op) { | |
116 | return bc->do_sym_op(backend, op_info, queue_index, errp); | |
117 | } | |
118 | ||
d6634ac0 GA |
119 | return -VIRTIO_CRYPTO_ERR; |
120 | } | |
121 | ||
122 | int cryptodev_backend_crypto_operation( | |
123 | CryptoDevBackend *backend, | |
124 | void *opaque, | |
125 | uint32_t queue_index, Error **errp) | |
126 | { | |
127 | VirtIOCryptoReq *req = opaque; | |
128 | ||
129 | if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) { | |
130 | CryptoDevBackendSymOpInfo *op_info; | |
131 | op_info = req->u.sym_op_info; | |
132 | ||
133 | return cryptodev_backend_sym_operation(backend, | |
134 | op_info, queue_index, errp); | |
135 | } else { | |
136 | error_setg(errp, "Unsupported cryptodev alg type: %" PRIu32 "", | |
137 | req->flags); | |
138 | return -VIRTIO_CRYPTO_NOTSUPP; | |
139 | } | |
140 | ||
141 | return -VIRTIO_CRYPTO_ERR; | |
9e4f86a8 GA |
142 | } |
143 | ||
d0ee7a13 GA |
144 | static void |
145 | cryptodev_backend_get_queues(Object *obj, Visitor *v, const char *name, | |
146 | void *opaque, Error **errp) | |
147 | { | |
148 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); | |
149 | uint32_t value = backend->conf.peers.queues; | |
150 | ||
151 | visit_type_uint32(v, name, &value, errp); | |
152 | } | |
153 | ||
154 | static void | |
155 | cryptodev_backend_set_queues(Object *obj, Visitor *v, const char *name, | |
156 | void *opaque, Error **errp) | |
157 | { | |
158 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); | |
159 | Error *local_err = NULL; | |
160 | uint32_t value; | |
161 | ||
162 | visit_type_uint32(v, name, &value, &local_err); | |
163 | if (local_err) { | |
164 | goto out; | |
165 | } | |
166 | if (!value) { | |
167 | error_setg(&local_err, "Property '%s.%s' doesn't take value '%" | |
168 | PRIu32 "'", object_get_typename(obj), name, value); | |
169 | goto out; | |
170 | } | |
171 | backend->conf.peers.queues = value; | |
172 | out: | |
173 | error_propagate(errp, local_err); | |
174 | } | |
175 | ||
176 | static void | |
177 | cryptodev_backend_complete(UserCreatable *uc, Error **errp) | |
178 | { | |
179 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(uc); | |
180 | CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_GET_CLASS(uc); | |
181 | Error *local_err = NULL; | |
182 | ||
183 | if (bc->init) { | |
184 | bc->init(backend, &local_err); | |
185 | if (local_err) { | |
186 | goto out; | |
187 | } | |
188 | } | |
6138dbda | 189 | |
d0ee7a13 GA |
190 | return; |
191 | ||
192 | out: | |
d0ee7a13 GA |
193 | error_propagate(errp, local_err); |
194 | } | |
195 | ||
46fd1705 GA |
196 | void cryptodev_backend_set_used(CryptoDevBackend *backend, bool used) |
197 | { | |
198 | backend->is_used = used; | |
199 | } | |
200 | ||
201 | bool cryptodev_backend_is_used(CryptoDevBackend *backend) | |
202 | { | |
203 | return backend->is_used; | |
204 | } | |
205 | ||
6138dbda GA |
206 | void cryptodev_backend_set_ready(CryptoDevBackend *backend, bool ready) |
207 | { | |
208 | backend->ready = ready; | |
209 | } | |
210 | ||
211 | bool cryptodev_backend_is_ready(CryptoDevBackend *backend) | |
212 | { | |
213 | return backend->ready; | |
214 | } | |
215 | ||
46fd1705 | 216 | static bool |
3beacfb9 | 217 | cryptodev_backend_can_be_deleted(UserCreatable *uc) |
46fd1705 GA |
218 | { |
219 | return !cryptodev_backend_is_used(CRYPTODEV_BACKEND(uc)); | |
220 | } | |
221 | ||
d0ee7a13 GA |
222 | static void cryptodev_backend_instance_init(Object *obj) |
223 | { | |
1e507bb0 | 224 | object_property_add(obj, "queues", "uint32", |
d0ee7a13 GA |
225 | cryptodev_backend_get_queues, |
226 | cryptodev_backend_set_queues, | |
227 | NULL, NULL, NULL); | |
228 | /* Initialize devices' queues property to 1 */ | |
229 | object_property_set_int(obj, 1, "queues", NULL); | |
230 | } | |
231 | ||
232 | static void cryptodev_backend_finalize(Object *obj) | |
233 | { | |
46fd1705 | 234 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); |
d0ee7a13 | 235 | |
46fd1705 | 236 | cryptodev_backend_cleanup(backend, NULL); |
d0ee7a13 GA |
237 | } |
238 | ||
239 | static void | |
240 | cryptodev_backend_class_init(ObjectClass *oc, void *data) | |
241 | { | |
242 | UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); | |
243 | ||
244 | ucc->complete = cryptodev_backend_complete; | |
46fd1705 | 245 | ucc->can_be_deleted = cryptodev_backend_can_be_deleted; |
d0ee7a13 GA |
246 | |
247 | QTAILQ_INIT(&crypto_clients); | |
248 | } | |
249 | ||
250 | static const TypeInfo cryptodev_backend_info = { | |
251 | .name = TYPE_CRYPTODEV_BACKEND, | |
252 | .parent = TYPE_OBJECT, | |
253 | .instance_size = sizeof(CryptoDevBackend), | |
254 | .instance_init = cryptodev_backend_instance_init, | |
255 | .instance_finalize = cryptodev_backend_finalize, | |
256 | .class_size = sizeof(CryptoDevBackendClass), | |
257 | .class_init = cryptodev_backend_class_init, | |
258 | .interfaces = (InterfaceInfo[]) { | |
259 | { TYPE_USER_CREATABLE }, | |
260 | { } | |
261 | } | |
262 | }; | |
263 | ||
264 | static void | |
265 | cryptodev_backend_register_types(void) | |
266 | { | |
267 | type_register_static(&cryptodev_backend_info); | |
268 | } | |
269 | ||
270 | type_init(cryptodev_backend_register_types); |