1/*-
2 * Copyright (c) 2005-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
--- 8 unchanged lines hidden (view full) ---
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/crypto/via/padlock.c 160582 2006-07-22 16:18:47Z pjd $");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/kernel.h>
33#include <sys/module.h>
34#include <sys/lock.h>
35#include <sys/mutex.h>
36#include <sys/malloc.h>
37#include <sys/libkern.h>
38#if defined(__i386__) && !defined(PC98)
39#include <machine/cpufunc.h>
40#include <machine/cputypes.h>
41#include <machine/md_var.h>
42#include <machine/specialreg.h>
43#endif
44
45#include <opencrypto/cryptodev.h>
46
47#include <crypto/via/padlock.h>
48
49/*
50 * Technical documentation about the PadLock engine can be found here:
51 *
52 * http://www.via.com.tw/en/downloads/whitepapers/initiatives/padlock/programming_guide.pdf
53 */
54
55struct padlock_softc {
56 int32_t sc_cid;
57 uint32_t sc_sid;
58 TAILQ_HEAD(, padlock_session) sc_sessions;
59 struct mtx sc_sessions_mtx;
60};
61
62static struct padlock_softc *padlock_sc;
63
64static int padlock_newsession(void *arg __unused, uint32_t *sidp,
65 struct cryptoini *cri);
66static int padlock_freesession(void *arg __unused, uint64_t tid);
67static int padlock_process(void *arg __unused, struct cryptop *crp,
68 int hint __unused);
69
70MALLOC_DEFINE(M_PADLOCK, "padlock_data", "PadLock Data");
71
72static int
73padlock_init(void)
74{
75 struct padlock_softc *sc;
76 char capp[256];
77
78#if defined(__i386__) && !defined(PC98)
79 /* If there is no AES support, we has nothing to do here. */
80 if (!(via_feature_xcrypt & VIA_HAS_AES)) {
81 printf("PadLock: No ACE support.\n");
82 return (EINVAL);
83 }
84 strlcpy(capp, "AES-CBC", sizeof(capp));
85#if 0
86 strlcat(capp, ",AES-EBC", sizeof(capp));
87 strlcat(capp, ",AES-CFB", sizeof(capp));
88 strlcat(capp, ",AES-OFB", sizeof(capp));
89#endif
90 if (via_feature_xcrypt & VIA_HAS_SHA) {
91 strlcat(capp, ",SHA1", sizeof(capp));
92 strlcat(capp, ",SHA256", sizeof(capp));
93 }
94#if 0
95 if (via_feature_xcrypt & VIA_HAS_AESCTR)
96 strlcat(capp, ",AES-CTR", sizeof(capp));
97 if (via_feature_xcrypt & VIA_HAS_MM)
98 strlcat(capp, ",RSA", sizeof(capp));
99#endif
100 printf("PadLock: HW support loaded for %s.\n", capp);
101#else
102 return (EINVAL);
103#endif
104
105 padlock_sc = sc = malloc(sizeof(*padlock_sc), M_PADLOCK,
106 M_WAITOK | M_ZERO);
107 TAILQ_INIT(&sc->sc_sessions);
108 sc->sc_sid = 1;
109
110 sc->sc_cid = crypto_get_driverid(0);
111 if (sc->sc_cid < 0) {
112 printf("PadLock: Could not get crypto driver id.\n");
113 free(padlock_sc, M_PADLOCK);
114 padlock_sc = NULL;
115 return (ENOMEM);
116 }
117
118 mtx_init(&sc->sc_sessions_mtx, "padlock_mtx", NULL, MTX_DEF);
119 crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0, padlock_newsession,
120 padlock_freesession, padlock_process, NULL);
121 crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0, padlock_newsession,
--- 22 unchanged lines hidden (view full) ---
144 return (0);
145 mtx_lock(&sc->sc_sessions_mtx);
146 TAILQ_FOREACH(ses, &sc->sc_sessions, ses_next) {
147 if (ses->ses_used)
148 active++;
149 }
150 if (active > 0) {
151 mtx_unlock(&sc->sc_sessions_mtx);
152 printf("PadLock: Cannot destroy, %u sessions active.\n",
153 active);
154 return (EBUSY);
155 }
156 padlock_sc = NULL;
157 for (ses = TAILQ_FIRST(&sc->sc_sessions); ses != NULL;
158 ses = TAILQ_FIRST(&sc->sc_sessions)) {
159 TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next);
160 free(ses, M_PADLOCK);
161 }
162 mtx_destroy(&sc->sc_sessions_mtx);
163 crypto_unregister_all(sc->sc_cid);
164 free(sc, M_PADLOCK);
165 return (0);
166}
167
168static int
169padlock_newsession(void *arg __unused, uint32_t *sidp, struct cryptoini *cri)
170{
171 struct padlock_softc *sc = padlock_sc;
172 struct padlock_session *ses = NULL;
173 struct cryptoini *encini, *macini;
174 int error;
175
176 if (sc == NULL || sidp == NULL || cri == NULL)
177 return (EINVAL);
178
179 encini = macini = NULL;
180 for (; cri != NULL; cri = cri->cri_next) {
181 switch (cri->cri_alg) {
182 case CRYPTO_NULL_HMAC:
--- 19 unchanged lines hidden (view full) ---
202
203 /*
204 * We only support HMAC algorithms to be able to work with
205 * fast_ipsec(4), so if we are asked only for authentication without
206 * encryption, don't pretend we can accellerate it.
207 */
208 if (encini == NULL)
209 return (EINVAL);
210
211 /*
212 * Let's look for a free session structure.
213 */
214 mtx_lock(&sc->sc_sessions_mtx);
215 /*
216 * Free sessions goes first, so if first session is used, we need to
217 * allocate one.
218 */
219 ses = TAILQ_FIRST(&sc->sc_sessions);
220 if (ses == NULL || ses->ses_used)
221 ses = NULL;
222 else {
223 TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next);
224 ses->ses_used = 1;
225 TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next);
226 }
227 mtx_unlock(&sc->sc_sessions_mtx);
228 if (ses == NULL) {
229 ses = malloc(sizeof(*ses), M_PADLOCK, M_NOWAIT | M_ZERO);
230 if (ses == NULL)
231 return (ENOMEM);
232 ses->ses_used = 1;
233 mtx_lock(&sc->sc_sessions_mtx);
234 ses->ses_id = sc->sc_sid++;
235 TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next);
236 mtx_unlock(&sc->sc_sessions_mtx);
237 }
238
239 error = padlock_cipher_setup(ses, encini);
240 if (error != 0) {
241 padlock_freesession(NULL, ses->ses_id);
242 return (error);
243 }
244
245 if (macini != NULL) {
246 error = padlock_hash_setup(ses, macini);
247 if (error != 0) {
248 padlock_freesession(NULL, ses->ses_id);
249 return (error);
250 }
251 }
252
253 *sidp = ses->ses_id;
254 return (0);
255}
256
257static int
258padlock_freesession(void *arg __unused, uint64_t tid)
--- 9 unchanged lines hidden (view full) ---
268 if (ses->ses_id == sid)
269 break;
270 }
271 if (ses == NULL) {
272 mtx_unlock(&sc->sc_sessions_mtx);
273 return (EINVAL);
274 }
275 TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next);
276 padlock_hash_free(ses);
277 bzero(ses, sizeof(*ses));
278 ses->ses_used = 0;
279 TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next);
280 mtx_unlock(&sc->sc_sessions_mtx);
281 return (0);
282}
283
284static int
285padlock_process(void *arg __unused, struct cryptop *crp, int hint __unused)
286{
287 struct padlock_softc *sc = padlock_sc;
288 struct padlock_session *ses = NULL;
289 struct cryptodesc *crd, *enccrd, *maccrd;
290 int error = 0;
291
292 enccrd = maccrd = NULL;
293
294 if (crp == NULL || crp->crp_callback == NULL || crp->crp_desc == NULL) {
295 error = EINVAL;
296 goto out;
297 }
298
299 for (crd = crp->crp_desc; crd != NULL; crd = crd->crd_next) {
300 switch (crd->crd_alg) {
--- 32 unchanged lines hidden (view full) ---
333 break;
334 }
335 mtx_unlock(&sc->sc_sessions_mtx);
336 if (ses == NULL) {
337 error = EINVAL;
338 goto out;
339 }
340
341 /* Perform data authentication if requested before encryption. */
342 if (maccrd != NULL && maccrd->crd_next == enccrd) {
343 error = padlock_hash_process(ses, maccrd, crp);
344 if (error != 0)
345 goto out;
346 }
347
348 error = padlock_cipher_process(ses, enccrd, crp);
349 if (error != 0)
350 goto out;
351
352 /* Perform data authentication if requested after encryption. */
353 if (maccrd != NULL && enccrd->crd_next == maccrd) {
354 error = padlock_hash_process(ses, maccrd, crp);
355 if (error != 0)
356 goto out;
357 }
358
359out:
360#if 0
361 /*
362 * This code is not necessary, because contexts will be freed on next
363 * padlock_setup_mackey() call or at padlock_freesession() call.
364 */
365 if (ses != NULL && maccrd != NULL &&
366 (maccrd->crd_flags & CRD_F_KEY_EXPLICIT) != 0) {
367 padlock_free_ctx(ses->ses_axf, ses->ses_ictx);
368 padlock_free_ctx(ses->ses_axf, ses->ses_octx);
369 }
370#endif
371 crp->crp_etype = error;
372 crypto_done(crp);
373 return (error);
374}
375
376static int
377padlock_modevent(module_t mod, int type, void *unused __unused)
378{
--- 22 unchanged lines hidden ---
2 * Copyright (c) 2005-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
--- 8 unchanged lines hidden (view full) ---
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/crypto/via/padlock.c 160582 2006-07-22 16:18:47Z pjd $");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/kernel.h>
33#include <sys/module.h>
34#include <sys/lock.h>
35#include <sys/mutex.h>
36#include <sys/malloc.h>
37#include <sys/libkern.h>
38#if defined(__i386__) && !defined(PC98)
39#include <machine/cpufunc.h>
40#include <machine/cputypes.h>
41#include <machine/md_var.h>
42#include <machine/specialreg.h>
43#endif
44
45#include <opencrypto/cryptodev.h>
46
47#include <crypto/via/padlock.h>
48
49/*
50 * Technical documentation about the PadLock engine can be found here:
51 *
52 * http://www.via.com.tw/en/downloads/whitepapers/initiatives/padlock/programming_guide.pdf
53 */
54
55struct padlock_softc {
56 int32_t sc_cid;
57 uint32_t sc_sid;
58 TAILQ_HEAD(, padlock_session) sc_sessions;
59 struct mtx sc_sessions_mtx;
60};
61
62static struct padlock_softc *padlock_sc;
63
64static int padlock_newsession(void *arg __unused, uint32_t *sidp,
65 struct cryptoini *cri);
66static int padlock_freesession(void *arg __unused, uint64_t tid);
67static int padlock_process(void *arg __unused, struct cryptop *crp,
68 int hint __unused);
69
70MALLOC_DEFINE(M_PADLOCK, "padlock_data", "PadLock Data");
71
72static int
73padlock_init(void)
74{
75 struct padlock_softc *sc;
76 char capp[256];
77
78#if defined(__i386__) && !defined(PC98)
79 /* If there is no AES support, we has nothing to do here. */
80 if (!(via_feature_xcrypt & VIA_HAS_AES)) {
81 printf("PadLock: No ACE support.\n");
82 return (EINVAL);
83 }
84 strlcpy(capp, "AES-CBC", sizeof(capp));
85#if 0
86 strlcat(capp, ",AES-EBC", sizeof(capp));
87 strlcat(capp, ",AES-CFB", sizeof(capp));
88 strlcat(capp, ",AES-OFB", sizeof(capp));
89#endif
90 if (via_feature_xcrypt & VIA_HAS_SHA) {
91 strlcat(capp, ",SHA1", sizeof(capp));
92 strlcat(capp, ",SHA256", sizeof(capp));
93 }
94#if 0
95 if (via_feature_xcrypt & VIA_HAS_AESCTR)
96 strlcat(capp, ",AES-CTR", sizeof(capp));
97 if (via_feature_xcrypt & VIA_HAS_MM)
98 strlcat(capp, ",RSA", sizeof(capp));
99#endif
100 printf("PadLock: HW support loaded for %s.\n", capp);
101#else
102 return (EINVAL);
103#endif
104
105 padlock_sc = sc = malloc(sizeof(*padlock_sc), M_PADLOCK,
106 M_WAITOK | M_ZERO);
107 TAILQ_INIT(&sc->sc_sessions);
108 sc->sc_sid = 1;
109
110 sc->sc_cid = crypto_get_driverid(0);
111 if (sc->sc_cid < 0) {
112 printf("PadLock: Could not get crypto driver id.\n");
113 free(padlock_sc, M_PADLOCK);
114 padlock_sc = NULL;
115 return (ENOMEM);
116 }
117
118 mtx_init(&sc->sc_sessions_mtx, "padlock_mtx", NULL, MTX_DEF);
119 crypto_register(sc->sc_cid, CRYPTO_AES_CBC, 0, 0, padlock_newsession,
120 padlock_freesession, padlock_process, NULL);
121 crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0, padlock_newsession,
--- 22 unchanged lines hidden (view full) ---
144 return (0);
145 mtx_lock(&sc->sc_sessions_mtx);
146 TAILQ_FOREACH(ses, &sc->sc_sessions, ses_next) {
147 if (ses->ses_used)
148 active++;
149 }
150 if (active > 0) {
151 mtx_unlock(&sc->sc_sessions_mtx);
152 printf("PadLock: Cannot destroy, %u sessions active.\n",
153 active);
154 return (EBUSY);
155 }
156 padlock_sc = NULL;
157 for (ses = TAILQ_FIRST(&sc->sc_sessions); ses != NULL;
158 ses = TAILQ_FIRST(&sc->sc_sessions)) {
159 TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next);
160 free(ses, M_PADLOCK);
161 }
162 mtx_destroy(&sc->sc_sessions_mtx);
163 crypto_unregister_all(sc->sc_cid);
164 free(sc, M_PADLOCK);
165 return (0);
166}
167
168static int
169padlock_newsession(void *arg __unused, uint32_t *sidp, struct cryptoini *cri)
170{
171 struct padlock_softc *sc = padlock_sc;
172 struct padlock_session *ses = NULL;
173 struct cryptoini *encini, *macini;
174 int error;
175
176 if (sc == NULL || sidp == NULL || cri == NULL)
177 return (EINVAL);
178
179 encini = macini = NULL;
180 for (; cri != NULL; cri = cri->cri_next) {
181 switch (cri->cri_alg) {
182 case CRYPTO_NULL_HMAC:
--- 19 unchanged lines hidden (view full) ---
202
203 /*
204 * We only support HMAC algorithms to be able to work with
205 * fast_ipsec(4), so if we are asked only for authentication without
206 * encryption, don't pretend we can accellerate it.
207 */
208 if (encini == NULL)
209 return (EINVAL);
210
211 /*
212 * Let's look for a free session structure.
213 */
214 mtx_lock(&sc->sc_sessions_mtx);
215 /*
216 * Free sessions goes first, so if first session is used, we need to
217 * allocate one.
218 */
219 ses = TAILQ_FIRST(&sc->sc_sessions);
220 if (ses == NULL || ses->ses_used)
221 ses = NULL;
222 else {
223 TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next);
224 ses->ses_used = 1;
225 TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next);
226 }
227 mtx_unlock(&sc->sc_sessions_mtx);
228 if (ses == NULL) {
229 ses = malloc(sizeof(*ses), M_PADLOCK, M_NOWAIT | M_ZERO);
230 if (ses == NULL)
231 return (ENOMEM);
232 ses->ses_used = 1;
233 mtx_lock(&sc->sc_sessions_mtx);
234 ses->ses_id = sc->sc_sid++;
235 TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next);
236 mtx_unlock(&sc->sc_sessions_mtx);
237 }
238
239 error = padlock_cipher_setup(ses, encini);
240 if (error != 0) {
241 padlock_freesession(NULL, ses->ses_id);
242 return (error);
243 }
244
245 if (macini != NULL) {
246 error = padlock_hash_setup(ses, macini);
247 if (error != 0) {
248 padlock_freesession(NULL, ses->ses_id);
249 return (error);
250 }
251 }
252
253 *sidp = ses->ses_id;
254 return (0);
255}
256
257static int
258padlock_freesession(void *arg __unused, uint64_t tid)
--- 9 unchanged lines hidden (view full) ---
268 if (ses->ses_id == sid)
269 break;
270 }
271 if (ses == NULL) {
272 mtx_unlock(&sc->sc_sessions_mtx);
273 return (EINVAL);
274 }
275 TAILQ_REMOVE(&sc->sc_sessions, ses, ses_next);
276 padlock_hash_free(ses);
277 bzero(ses, sizeof(*ses));
278 ses->ses_used = 0;
279 TAILQ_INSERT_TAIL(&sc->sc_sessions, ses, ses_next);
280 mtx_unlock(&sc->sc_sessions_mtx);
281 return (0);
282}
283
284static int
285padlock_process(void *arg __unused, struct cryptop *crp, int hint __unused)
286{
287 struct padlock_softc *sc = padlock_sc;
288 struct padlock_session *ses = NULL;
289 struct cryptodesc *crd, *enccrd, *maccrd;
290 int error = 0;
291
292 enccrd = maccrd = NULL;
293
294 if (crp == NULL || crp->crp_callback == NULL || crp->crp_desc == NULL) {
295 error = EINVAL;
296 goto out;
297 }
298
299 for (crd = crp->crp_desc; crd != NULL; crd = crd->crd_next) {
300 switch (crd->crd_alg) {
--- 32 unchanged lines hidden (view full) ---
333 break;
334 }
335 mtx_unlock(&sc->sc_sessions_mtx);
336 if (ses == NULL) {
337 error = EINVAL;
338 goto out;
339 }
340
341 /* Perform data authentication if requested before encryption. */
342 if (maccrd != NULL && maccrd->crd_next == enccrd) {
343 error = padlock_hash_process(ses, maccrd, crp);
344 if (error != 0)
345 goto out;
346 }
347
348 error = padlock_cipher_process(ses, enccrd, crp);
349 if (error != 0)
350 goto out;
351
352 /* Perform data authentication if requested after encryption. */
353 if (maccrd != NULL && enccrd->crd_next == maccrd) {
354 error = padlock_hash_process(ses, maccrd, crp);
355 if (error != 0)
356 goto out;
357 }
358
359out:
360#if 0
361 /*
362 * This code is not necessary, because contexts will be freed on next
363 * padlock_setup_mackey() call or at padlock_freesession() call.
364 */
365 if (ses != NULL && maccrd != NULL &&
366 (maccrd->crd_flags & CRD_F_KEY_EXPLICIT) != 0) {
367 padlock_free_ctx(ses->ses_axf, ses->ses_ictx);
368 padlock_free_ctx(ses->ses_axf, ses->ses_octx);
369 }
370#endif
371 crp->crp_etype = error;
372 crypto_done(crp);
373 return (error);
374}
375
376static int
377padlock_modevent(module_t mod, int type, void *unused __unused)
378{
--- 22 unchanged lines hidden ---