FreeBSD/Linux Kernel Cross Reference
sys/dev/ubsec/ubsec.c
1 /* $OpenBSD: ubsec.c,v 1.115 2002/09/24 18:33:26 jason Exp $ */
2
3 /*-
4 * Copyright (c) 2000 Jason L. Wright (jason@thought.net)
5 * Copyright (c) 2000 Theo de Raadt (deraadt@openbsd.org)
6 * Copyright (c) 2001 Patrik Lindergren (patrik@ipunplugged.com)
7 *
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by Jason L. Wright
21 * 4. The name of the author may not be used to endorse or promote products
22 * derived from this software without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
26 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
27 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
28 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
32 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
33 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 *
36 * Effort sponsored in part by the Defense Advanced Research Projects
37 * Agency (DARPA) and Air Force Research Laboratory, Air Force
38 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
39 */
40
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
43
44 /*
45 * uBsec 5[56]01, 58xx hardware crypto accelerator
46 */
47
48 #include "opt_ubsec.h"
49
50 #include <sys/param.h>
51 #include <sys/systm.h>
52 #include <sys/proc.h>
53 #include <sys/errno.h>
54 #include <sys/malloc.h>
55 #include <sys/kernel.h>
56 #include <sys/module.h>
57 #include <sys/mbuf.h>
58 #include <sys/lock.h>
59 #include <sys/mutex.h>
60 #include <sys/sysctl.h>
61 #include <sys/endian.h>
62
63 #include <vm/vm.h>
64 #include <vm/pmap.h>
65
66 #include <machine/bus.h>
67 #include <machine/resource.h>
68 #include <sys/bus.h>
69 #include <sys/rman.h>
70
71 #include <crypto/sha1.h>
72 #include <opencrypto/cryptodev.h>
73 #include <opencrypto/cryptosoft.h>
74 #include <sys/md5.h>
75 #include <sys/random.h>
76 #include <sys/kobj.h>
77
78 #include "cryptodev_if.h"
79
80 #include <dev/pci/pcivar.h>
81 #include <dev/pci/pcireg.h>
82
83 /* grr, #defines for gratuitous incompatibility in queue.h */
84 #define SIMPLEQ_HEAD STAILQ_HEAD
85 #define SIMPLEQ_ENTRY STAILQ_ENTRY
86 #define SIMPLEQ_INIT STAILQ_INIT
87 #define SIMPLEQ_INSERT_TAIL STAILQ_INSERT_TAIL
88 #define SIMPLEQ_EMPTY STAILQ_EMPTY
89 #define SIMPLEQ_FIRST STAILQ_FIRST
90 #define SIMPLEQ_REMOVE_HEAD STAILQ_REMOVE_HEAD
91 #define SIMPLEQ_FOREACH STAILQ_FOREACH
92 /* ditto for endian.h */
93 #define letoh16(x) le16toh(x)
94 #define letoh32(x) le32toh(x)
95
96 #ifdef UBSEC_RNDTEST
97 #include <dev/rndtest/rndtest.h>
98 #endif
99 #include <dev/ubsec/ubsecreg.h>
100 #include <dev/ubsec/ubsecvar.h>
101
102 /*
103 * Prototypes and count for the pci_device structure
104 */
105 static int ubsec_probe(device_t);
106 static int ubsec_attach(device_t);
107 static int ubsec_detach(device_t);
108 static int ubsec_suspend(device_t);
109 static int ubsec_resume(device_t);
110 static void ubsec_shutdown(device_t);
111
112 static int ubsec_newsession(device_t, u_int32_t *, struct cryptoini *);
113 static int ubsec_freesession(device_t, u_int64_t);
114 static int ubsec_process(device_t, struct cryptop *, int);
115 static int ubsec_kprocess(device_t, struct cryptkop *, int);
116
117 static device_method_t ubsec_methods[] = {
118 /* Device interface */
119 DEVMETHOD(device_probe, ubsec_probe),
120 DEVMETHOD(device_attach, ubsec_attach),
121 DEVMETHOD(device_detach, ubsec_detach),
122 DEVMETHOD(device_suspend, ubsec_suspend),
123 DEVMETHOD(device_resume, ubsec_resume),
124 DEVMETHOD(device_shutdown, ubsec_shutdown),
125
126 /* bus interface */
127 DEVMETHOD(bus_print_child, bus_generic_print_child),
128 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
129
130 /* crypto device methods */
131 DEVMETHOD(cryptodev_newsession, ubsec_newsession),
132 DEVMETHOD(cryptodev_freesession,ubsec_freesession),
133 DEVMETHOD(cryptodev_process, ubsec_process),
134 DEVMETHOD(cryptodev_kprocess, ubsec_kprocess),
135
136 { 0, 0 }
137 };
138 static driver_t ubsec_driver = {
139 "ubsec",
140 ubsec_methods,
141 sizeof (struct ubsec_softc)
142 };
143 static devclass_t ubsec_devclass;
144
145 DRIVER_MODULE(ubsec, pci, ubsec_driver, ubsec_devclass, 0, 0);
146 MODULE_DEPEND(ubsec, crypto, 1, 1, 1);
147 #ifdef UBSEC_RNDTEST
148 MODULE_DEPEND(ubsec, rndtest, 1, 1, 1);
149 #endif
150
151 static void ubsec_intr(void *);
152 static void ubsec_callback(struct ubsec_softc *, struct ubsec_q *);
153 static void ubsec_feed(struct ubsec_softc *);
154 static void ubsec_mcopy(struct mbuf *, struct mbuf *, int, int);
155 static void ubsec_callback2(struct ubsec_softc *, struct ubsec_q2 *);
156 static int ubsec_feed2(struct ubsec_softc *);
157 static void ubsec_rng(void *);
158 static int ubsec_dma_malloc(struct ubsec_softc *, bus_size_t,
159 struct ubsec_dma_alloc *, int);
160 #define ubsec_dma_sync(_dma, _flags) \
161 bus_dmamap_sync((_dma)->dma_tag, (_dma)->dma_map, (_flags))
162 static void ubsec_dma_free(struct ubsec_softc *, struct ubsec_dma_alloc *);
163 static int ubsec_dmamap_aligned(struct ubsec_operand *op);
164
165 static void ubsec_reset_board(struct ubsec_softc *sc);
166 static void ubsec_init_board(struct ubsec_softc *sc);
167 static void ubsec_init_pciregs(device_t dev);
168 static void ubsec_totalreset(struct ubsec_softc *sc);
169
170 static int ubsec_free_q(struct ubsec_softc *sc, struct ubsec_q *q);
171
172 static int ubsec_kprocess_modexp_hw(struct ubsec_softc *, struct cryptkop *, int);
173 static int ubsec_kprocess_modexp_sw(struct ubsec_softc *, struct cryptkop *, int);
174 static int ubsec_kprocess_rsapriv(struct ubsec_softc *, struct cryptkop *, int);
175 static void ubsec_kfree(struct ubsec_softc *, struct ubsec_q2 *);
176 static int ubsec_ksigbits(struct crparam *);
177 static void ubsec_kshift_r(u_int, u_int8_t *, u_int, u_int8_t *, u_int);
178 static void ubsec_kshift_l(u_int, u_int8_t *, u_int, u_int8_t *, u_int);
179
180 SYSCTL_NODE(_hw, OID_AUTO, ubsec, CTLFLAG_RD, 0, "Broadcom driver parameters");
181
182 #ifdef UBSEC_DEBUG
183 static void ubsec_dump_pb(volatile struct ubsec_pktbuf *);
184 static void ubsec_dump_mcr(struct ubsec_mcr *);
185 static void ubsec_dump_ctx2(struct ubsec_ctx_keyop *);
186
187 static int ubsec_debug = 0;
188 SYSCTL_INT(_hw_ubsec, OID_AUTO, debug, CTLFLAG_RW, &ubsec_debug,
189 0, "control debugging msgs");
190 #endif
191
192 #define READ_REG(sc,r) \
193 bus_space_read_4((sc)->sc_st, (sc)->sc_sh, (r))
194
195 #define WRITE_REG(sc,reg,val) \
196 bus_space_write_4((sc)->sc_st, (sc)->sc_sh, reg, val)
197
198 #define SWAP32(x) (x) = htole32(ntohl((x)))
199 #define HTOLE32(x) (x) = htole32(x)
200
201 struct ubsec_stats ubsecstats;
202 SYSCTL_STRUCT(_hw_ubsec, OID_AUTO, stats, CTLFLAG_RD, &ubsecstats,
203 ubsec_stats, "driver statistics");
204
205 static int
206 ubsec_probe(device_t dev)
207 {
208 if (pci_get_vendor(dev) == PCI_VENDOR_SUN &&
209 (pci_get_device(dev) == PCI_PRODUCT_SUN_5821 ||
210 pci_get_device(dev) == PCI_PRODUCT_SUN_SCA1K))
211 return (BUS_PROBE_DEFAULT);
212 if (pci_get_vendor(dev) == PCI_VENDOR_BLUESTEEL &&
213 (pci_get_device(dev) == PCI_PRODUCT_BLUESTEEL_5501 ||
214 pci_get_device(dev) == PCI_PRODUCT_BLUESTEEL_5601))
215 return (BUS_PROBE_DEFAULT);
216 if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM &&
217 (pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5801 ||
218 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5802 ||
219 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5805 ||
220 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5820 ||
221 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5821 ||
222 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5822 ||
223 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5823
224 ))
225 return (BUS_PROBE_DEFAULT);
226 return (ENXIO);
227 }
228
229 static const char*
230 ubsec_partname(struct ubsec_softc *sc)
231 {
232 /* XXX sprintf numbers when not decoded */
233 switch (pci_get_vendor(sc->sc_dev)) {
234 case PCI_VENDOR_BROADCOM:
235 switch (pci_get_device(sc->sc_dev)) {
236 case PCI_PRODUCT_BROADCOM_5801: return "Broadcom 5801";
237 case PCI_PRODUCT_BROADCOM_5802: return "Broadcom 5802";
238 case PCI_PRODUCT_BROADCOM_5805: return "Broadcom 5805";
239 case PCI_PRODUCT_BROADCOM_5820: return "Broadcom 5820";
240 case PCI_PRODUCT_BROADCOM_5821: return "Broadcom 5821";
241 case PCI_PRODUCT_BROADCOM_5822: return "Broadcom 5822";
242 case PCI_PRODUCT_BROADCOM_5823: return "Broadcom 5823";
243 }
244 return "Broadcom unknown-part";
245 case PCI_VENDOR_BLUESTEEL:
246 switch (pci_get_device(sc->sc_dev)) {
247 case PCI_PRODUCT_BLUESTEEL_5601: return "Bluesteel 5601";
248 }
249 return "Bluesteel unknown-part";
250 case PCI_VENDOR_SUN:
251 switch (pci_get_device(sc->sc_dev)) {
252 case PCI_PRODUCT_SUN_5821: return "Sun Crypto 5821";
253 case PCI_PRODUCT_SUN_SCA1K: return "Sun Crypto 1K";
254 }
255 return "Sun unknown-part";
256 }
257 return "Unknown-vendor unknown-part";
258 }
259
260 static void
261 default_harvest(struct rndtest_state *rsp, void *buf, u_int count)
262 {
263 random_harvest(buf, count, count*NBBY, 0, RANDOM_PURE);
264 }
265
266 static int
267 ubsec_attach(device_t dev)
268 {
269 struct ubsec_softc *sc = device_get_softc(dev);
270 struct ubsec_dma *dmap;
271 u_int32_t cmd, i;
272 int rid;
273
274 bzero(sc, sizeof (*sc));
275 sc->sc_dev = dev;
276
277 SIMPLEQ_INIT(&sc->sc_queue);
278 SIMPLEQ_INIT(&sc->sc_qchip);
279 SIMPLEQ_INIT(&sc->sc_queue2);
280 SIMPLEQ_INIT(&sc->sc_qchip2);
281 SIMPLEQ_INIT(&sc->sc_q2free);
282
283 /* XXX handle power management */
284
285 sc->sc_statmask = BS_STAT_MCR1_DONE | BS_STAT_DMAERR;
286
287 if (pci_get_vendor(dev) == PCI_VENDOR_BLUESTEEL &&
288 pci_get_device(dev) == PCI_PRODUCT_BLUESTEEL_5601)
289 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG;
290
291 if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM &&
292 (pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5802 ||
293 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5805))
294 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG;
295
296 if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM &&
297 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5820)
298 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG |
299 UBS_FLAGS_LONGCTX | UBS_FLAGS_HWNORM | UBS_FLAGS_BIGKEY;
300
301 if ((pci_get_vendor(dev) == PCI_VENDOR_BROADCOM &&
302 (pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5821 ||
303 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5822 ||
304 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5823)) ||
305 (pci_get_vendor(dev) == PCI_VENDOR_SUN &&
306 (pci_get_device(dev) == PCI_PRODUCT_SUN_SCA1K ||
307 pci_get_device(dev) == PCI_PRODUCT_SUN_5821))) {
308 /* NB: the 5821/5822 defines some additional status bits */
309 sc->sc_statmask |= BS_STAT_MCR1_ALLEMPTY |
310 BS_STAT_MCR2_ALLEMPTY;
311 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG |
312 UBS_FLAGS_LONGCTX | UBS_FLAGS_HWNORM | UBS_FLAGS_BIGKEY;
313 }
314
315 cmd = pci_read_config(dev, PCIR_COMMAND, 4);
316 cmd |= PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN;
317 pci_write_config(dev, PCIR_COMMAND, cmd, 4);
318 cmd = pci_read_config(dev, PCIR_COMMAND, 4);
319
320 if (!(cmd & PCIM_CMD_MEMEN)) {
321 device_printf(dev, "failed to enable memory mapping\n");
322 goto bad;
323 }
324
325 if (!(cmd & PCIM_CMD_BUSMASTEREN)) {
326 device_printf(dev, "failed to enable bus mastering\n");
327 goto bad;
328 }
329
330 /*
331 * Setup memory-mapping of PCI registers.
332 */
333 rid = BS_BAR;
334 sc->sc_sr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
335 RF_ACTIVE);
336 if (sc->sc_sr == NULL) {
337 device_printf(dev, "cannot map register space\n");
338 goto bad;
339 }
340 sc->sc_st = rman_get_bustag(sc->sc_sr);
341 sc->sc_sh = rman_get_bushandle(sc->sc_sr);
342
343 /*
344 * Arrange interrupt line.
345 */
346 rid = 0;
347 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
348 RF_SHAREABLE|RF_ACTIVE);
349 if (sc->sc_irq == NULL) {
350 device_printf(dev, "could not map interrupt\n");
351 goto bad1;
352 }
353 /*
354 * NB: Network code assumes we are blocked with splimp()
355 * so make sure the IRQ is mapped appropriately.
356 */
357 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_NET | INTR_MPSAFE,
358 NULL, ubsec_intr, sc, &sc->sc_ih)) {
359 device_printf(dev, "could not establish interrupt\n");
360 goto bad2;
361 }
362
363 sc->sc_cid = crypto_get_driverid(dev, CRYPTOCAP_F_HARDWARE);
364 if (sc->sc_cid < 0) {
365 device_printf(dev, "could not get crypto driver id\n");
366 goto bad3;
367 }
368
369 /*
370 * Setup DMA descriptor area.
371 */
372 if (bus_dma_tag_create(NULL, /* parent */
373 1, 0, /* alignment, bounds */
374 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
375 BUS_SPACE_MAXADDR, /* highaddr */
376 NULL, NULL, /* filter, filterarg */
377 0x3ffff, /* maxsize */
378 UBS_MAX_SCATTER, /* nsegments */
379 0xffff, /* maxsegsize */
380 BUS_DMA_ALLOCNOW, /* flags */
381 NULL, NULL, /* lockfunc, lockarg */
382 &sc->sc_dmat)) {
383 device_printf(dev, "cannot allocate DMA tag\n");
384 goto bad4;
385 }
386 SIMPLEQ_INIT(&sc->sc_freequeue);
387 dmap = sc->sc_dmaa;
388 for (i = 0; i < UBS_MAX_NQUEUE; i++, dmap++) {
389 struct ubsec_q *q;
390
391 q = (struct ubsec_q *)malloc(sizeof(struct ubsec_q),
392 M_DEVBUF, M_NOWAIT);
393 if (q == NULL) {
394 device_printf(dev, "cannot allocate queue buffers\n");
395 break;
396 }
397
398 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_dmachunk),
399 &dmap->d_alloc, 0)) {
400 device_printf(dev, "cannot allocate dma buffers\n");
401 free(q, M_DEVBUF);
402 break;
403 }
404 dmap->d_dma = (struct ubsec_dmachunk *)dmap->d_alloc.dma_vaddr;
405
406 q->q_dma = dmap;
407 sc->sc_queuea[i] = q;
408
409 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
410 }
411 mtx_init(&sc->sc_mcr1lock, device_get_nameunit(dev),
412 "mcr1 operations", MTX_DEF);
413 mtx_init(&sc->sc_freeqlock, device_get_nameunit(dev),
414 "mcr1 free q", MTX_DEF);
415
416 device_printf(sc->sc_dev, "%s\n", ubsec_partname(sc));
417
418 crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0);
419 crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0);
420 crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0);
421 crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0);
422
423 /*
424 * Reset Broadcom chip
425 */
426 ubsec_reset_board(sc);
427
428 /*
429 * Init Broadcom specific PCI settings
430 */
431 ubsec_init_pciregs(dev);
432
433 /*
434 * Init Broadcom chip
435 */
436 ubsec_init_board(sc);
437
438 #ifndef UBSEC_NO_RNG
439 if (sc->sc_flags & UBS_FLAGS_RNG) {
440 sc->sc_statmask |= BS_STAT_MCR2_DONE;
441 #ifdef UBSEC_RNDTEST
442 sc->sc_rndtest = rndtest_attach(dev);
443 if (sc->sc_rndtest)
444 sc->sc_harvest = rndtest_harvest;
445 else
446 sc->sc_harvest = default_harvest;
447 #else
448 sc->sc_harvest = default_harvest;
449 #endif
450
451 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr),
452 &sc->sc_rng.rng_q.q_mcr, 0))
453 goto skip_rng;
454
455 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_rngbypass),
456 &sc->sc_rng.rng_q.q_ctx, 0)) {
457 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_mcr);
458 goto skip_rng;
459 }
460
461 if (ubsec_dma_malloc(sc, sizeof(u_int32_t) *
462 UBSEC_RNG_BUFSIZ, &sc->sc_rng.rng_buf, 0)) {
463 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_ctx);
464 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_mcr);
465 goto skip_rng;
466 }
467
468 if (hz >= 100)
469 sc->sc_rnghz = hz / 100;
470 else
471 sc->sc_rnghz = 1;
472 callout_init(&sc->sc_rngto, CALLOUT_MPSAFE);
473 callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc);
474 skip_rng:
475 ;
476 }
477 #endif /* UBSEC_NO_RNG */
478 mtx_init(&sc->sc_mcr2lock, device_get_nameunit(dev),
479 "mcr2 operations", MTX_DEF);
480
481 if (sc->sc_flags & UBS_FLAGS_KEY) {
482 sc->sc_statmask |= BS_STAT_MCR2_DONE;
483
484 crypto_kregister(sc->sc_cid, CRK_MOD_EXP, 0);
485 #if 0
486 crypto_kregister(sc->sc_cid, CRK_MOD_EXP_CRT, 0);
487 #endif
488 }
489 return (0);
490 bad4:
491 crypto_unregister_all(sc->sc_cid);
492 bad3:
493 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
494 bad2:
495 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
496 bad1:
497 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_sr);
498 bad:
499 return (ENXIO);
500 }
501
502 /*
503 * Detach a device that successfully probed.
504 */
505 static int
506 ubsec_detach(device_t dev)
507 {
508 struct ubsec_softc *sc = device_get_softc(dev);
509
510 /* XXX wait/abort active ops */
511
512 /* disable interrupts */
513 WRITE_REG(sc, BS_CTRL, READ_REG(sc, BS_CTRL) &~
514 (BS_CTRL_MCR2INT | BS_CTRL_MCR1INT | BS_CTRL_DMAERR));
515
516 callout_stop(&sc->sc_rngto);
517
518 crypto_unregister_all(sc->sc_cid);
519
520 #ifdef UBSEC_RNDTEST
521 if (sc->sc_rndtest)
522 rndtest_detach(sc->sc_rndtest);
523 #endif
524
525 while (!SIMPLEQ_EMPTY(&sc->sc_freequeue)) {
526 struct ubsec_q *q;
527
528 q = SIMPLEQ_FIRST(&sc->sc_freequeue);
529 SIMPLEQ_REMOVE_HEAD(&sc->sc_freequeue, q_next);
530 ubsec_dma_free(sc, &q->q_dma->d_alloc);
531 free(q, M_DEVBUF);
532 }
533 mtx_destroy(&sc->sc_mcr1lock);
534 mtx_destroy(&sc->sc_freeqlock);
535 #ifndef UBSEC_NO_RNG
536 if (sc->sc_flags & UBS_FLAGS_RNG) {
537 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_mcr);
538 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_ctx);
539 ubsec_dma_free(sc, &sc->sc_rng.rng_buf);
540 }
541 #endif /* UBSEC_NO_RNG */
542 mtx_destroy(&sc->sc_mcr2lock);
543
544 bus_generic_detach(dev);
545 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
546 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
547
548 bus_dma_tag_destroy(sc->sc_dmat);
549 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_sr);
550
551 return (0);
552 }
553
554 /*
555 * Stop all chip i/o so that the kernel's probe routines don't
556 * get confused by errant DMAs when rebooting.
557 */
558 static void
559 ubsec_shutdown(device_t dev)
560 {
561 #ifdef notyet
562 ubsec_stop(device_get_softc(dev));
563 #endif
564 }
565
566 /*
567 * Device suspend routine.
568 */
569 static int
570 ubsec_suspend(device_t dev)
571 {
572 struct ubsec_softc *sc = device_get_softc(dev);
573
574 #ifdef notyet
575 /* XXX stop the device and save PCI settings */
576 #endif
577 sc->sc_suspended = 1;
578
579 return (0);
580 }
581
582 static int
583 ubsec_resume(device_t dev)
584 {
585 struct ubsec_softc *sc = device_get_softc(dev);
586
587 #ifdef notyet
588 /* XXX retore PCI settings and start the device */
589 #endif
590 sc->sc_suspended = 0;
591 return (0);
592 }
593
594 /*
595 * UBSEC Interrupt routine
596 */
597 static void
598 ubsec_intr(void *arg)
599 {
600 struct ubsec_softc *sc = arg;
601 volatile u_int32_t stat;
602 struct ubsec_q *q;
603 struct ubsec_dma *dmap;
604 int npkts = 0, i;
605
606 stat = READ_REG(sc, BS_STAT);
607 stat &= sc->sc_statmask;
608 if (stat == 0)
609 return;
610
611 WRITE_REG(sc, BS_STAT, stat); /* IACK */
612
613 /*
614 * Check to see if we have any packets waiting for us
615 */
616 if ((stat & BS_STAT_MCR1_DONE)) {
617 mtx_lock(&sc->sc_mcr1lock);
618 while (!SIMPLEQ_EMPTY(&sc->sc_qchip)) {
619 q = SIMPLEQ_FIRST(&sc->sc_qchip);
620 dmap = q->q_dma;
621
622 if ((dmap->d_dma->d_mcr.mcr_flags & htole16(UBS_MCR_DONE)) == 0)
623 break;
624
625 SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q_next);
626
627 npkts = q->q_nstacked_mcrs;
628 sc->sc_nqchip -= 1+npkts;
629 /*
630 * search for further sc_qchip ubsec_q's that share
631 * the same MCR, and complete them too, they must be
632 * at the top.
633 */
634 for (i = 0; i < npkts; i++) {
635 if(q->q_stacked_mcr[i]) {
636 ubsec_callback(sc, q->q_stacked_mcr[i]);
637 } else {
638 break;
639 }
640 }
641 ubsec_callback(sc, q);
642 }
643 /*
644 * Don't send any more packet to chip if there has been
645 * a DMAERR.
646 */
647 if (!(stat & BS_STAT_DMAERR))
648 ubsec_feed(sc);
649 mtx_unlock(&sc->sc_mcr1lock);
650 }
651
652 /*
653 * Check to see if we have any key setups/rng's waiting for us
654 */
655 if ((sc->sc_flags & (UBS_FLAGS_KEY|UBS_FLAGS_RNG)) &&
656 (stat & BS_STAT_MCR2_DONE)) {
657 struct ubsec_q2 *q2;
658 struct ubsec_mcr *mcr;
659
660 mtx_lock(&sc->sc_mcr2lock);
661 while (!SIMPLEQ_EMPTY(&sc->sc_qchip2)) {
662 q2 = SIMPLEQ_FIRST(&sc->sc_qchip2);
663
664 ubsec_dma_sync(&q2->q_mcr,
665 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
666
667 mcr = (struct ubsec_mcr *)q2->q_mcr.dma_vaddr;
668 if ((mcr->mcr_flags & htole16(UBS_MCR_DONE)) == 0) {
669 ubsec_dma_sync(&q2->q_mcr,
670 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
671 break;
672 }
673 SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip2, q_next);
674 ubsec_callback2(sc, q2);
675 /*
676 * Don't send any more packet to chip if there has been
677 * a DMAERR.
678 */
679 if (!(stat & BS_STAT_DMAERR))
680 ubsec_feed2(sc);
681 }
682 mtx_unlock(&sc->sc_mcr2lock);
683 }
684
685 /*
686 * Check to see if we got any DMA Error
687 */
688 if (stat & BS_STAT_DMAERR) {
689 #ifdef UBSEC_DEBUG
690 if (ubsec_debug) {
691 volatile u_int32_t a = READ_REG(sc, BS_ERR);
692
693 printf("dmaerr %s@%08x\n",
694 (a & BS_ERR_READ) ? "read" : "write",
695 a & BS_ERR_ADDR);
696 }
697 #endif /* UBSEC_DEBUG */
698 ubsecstats.hst_dmaerr++;
699 mtx_lock(&sc->sc_mcr1lock);
700 ubsec_totalreset(sc);
701 ubsec_feed(sc);
702 mtx_unlock(&sc->sc_mcr1lock);
703 }
704
705 if (sc->sc_needwakeup) { /* XXX check high watermark */
706 int wakeup;
707
708 mtx_lock(&sc->sc_freeqlock);
709 wakeup = sc->sc_needwakeup & (CRYPTO_SYMQ|CRYPTO_ASYMQ);
710 #ifdef UBSEC_DEBUG
711 if (ubsec_debug)
712 device_printf(sc->sc_dev, "wakeup crypto (%x)\n",
713 sc->sc_needwakeup);
714 #endif /* UBSEC_DEBUG */
715 sc->sc_needwakeup &= ~wakeup;
716 mtx_unlock(&sc->sc_freeqlock);
717 crypto_unblock(sc->sc_cid, wakeup);
718 }
719 }
720
721 /*
722 * ubsec_feed() - aggregate and post requests to chip
723 */
724 static void
725 ubsec_feed(struct ubsec_softc *sc)
726 {
727 struct ubsec_q *q, *q2;
728 int npkts, i;
729 void *v;
730 u_int32_t stat;
731
732 /*
733 * Decide how many ops to combine in a single MCR. We cannot
734 * aggregate more than UBS_MAX_AGGR because this is the number
735 * of slots defined in the data structure. Note that
736 * aggregation only happens if ops are marked batch'able.
737 * Aggregating ops reduces the number of interrupts to the host
738 * but also (potentially) increases the latency for processing
739 * completed ops as we only get an interrupt when all aggregated
740 * ops have completed.
741 */
742 if (sc->sc_nqueue == 0)
743 return;
744 if (sc->sc_nqueue > 1) {
745 npkts = 0;
746 SIMPLEQ_FOREACH(q, &sc->sc_queue, q_next) {
747 npkts++;
748 if ((q->q_crp->crp_flags & CRYPTO_F_BATCH) == 0)
749 break;
750 }
751 } else
752 npkts = 1;
753 /*
754 * Check device status before going any further.
755 */
756 if ((stat = READ_REG(sc, BS_STAT)) & (BS_STAT_MCR1_FULL | BS_STAT_DMAERR)) {
757 if (stat & BS_STAT_DMAERR) {
758 ubsec_totalreset(sc);
759 ubsecstats.hst_dmaerr++;
760 } else
761 ubsecstats.hst_mcr1full++;
762 return;
763 }
764 if (sc->sc_nqueue > ubsecstats.hst_maxqueue)
765 ubsecstats.hst_maxqueue = sc->sc_nqueue;
766 if (npkts > UBS_MAX_AGGR)
767 npkts = UBS_MAX_AGGR;
768 if (npkts < 2) /* special case 1 op */
769 goto feed1;
770
771 ubsecstats.hst_totbatch += npkts-1;
772 #ifdef UBSEC_DEBUG
773 if (ubsec_debug)
774 printf("merging %d records\n", npkts);
775 #endif /* UBSEC_DEBUG */
776
777 q = SIMPLEQ_FIRST(&sc->sc_queue);
778 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
779 --sc->sc_nqueue;
780
781 bus_dmamap_sync(sc->sc_dmat, q->q_src_map, BUS_DMASYNC_PREWRITE);
782 if (q->q_dst_map != NULL)
783 bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, BUS_DMASYNC_PREREAD);
784
785 q->q_nstacked_mcrs = npkts - 1; /* Number of packets stacked */
786
787 for (i = 0; i < q->q_nstacked_mcrs; i++) {
788 q2 = SIMPLEQ_FIRST(&sc->sc_queue);
789 bus_dmamap_sync(sc->sc_dmat, q2->q_src_map,
790 BUS_DMASYNC_PREWRITE);
791 if (q2->q_dst_map != NULL)
792 bus_dmamap_sync(sc->sc_dmat, q2->q_dst_map,
793 BUS_DMASYNC_PREREAD);
794 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
795 --sc->sc_nqueue;
796
797 v = (void*)(((char *)&q2->q_dma->d_dma->d_mcr) + sizeof(struct ubsec_mcr) -
798 sizeof(struct ubsec_mcr_add));
799 bcopy(v, &q->q_dma->d_dma->d_mcradd[i], sizeof(struct ubsec_mcr_add));
800 q->q_stacked_mcr[i] = q2;
801 }
802 q->q_dma->d_dma->d_mcr.mcr_pkts = htole16(npkts);
803 SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next);
804 sc->sc_nqchip += npkts;
805 if (sc->sc_nqchip > ubsecstats.hst_maxqchip)
806 ubsecstats.hst_maxqchip = sc->sc_nqchip;
807 ubsec_dma_sync(&q->q_dma->d_alloc,
808 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
809 WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr +
810 offsetof(struct ubsec_dmachunk, d_mcr));
811 return;
812 feed1:
813 q = SIMPLEQ_FIRST(&sc->sc_queue);
814
815 bus_dmamap_sync(sc->sc_dmat, q->q_src_map, BUS_DMASYNC_PREWRITE);
816 if (q->q_dst_map != NULL)
817 bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, BUS_DMASYNC_PREREAD);
818 ubsec_dma_sync(&q->q_dma->d_alloc,
819 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
820
821 WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr +
822 offsetof(struct ubsec_dmachunk, d_mcr));
823 #ifdef UBSEC_DEBUG
824 if (ubsec_debug)
825 printf("feed1: q->chip %p %08x stat %08x\n",
826 q, (u_int32_t)vtophys(&q->q_dma->d_dma->d_mcr),
827 stat);
828 #endif /* UBSEC_DEBUG */
829 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
830 --sc->sc_nqueue;
831 SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next);
832 sc->sc_nqchip++;
833 if (sc->sc_nqchip > ubsecstats.hst_maxqchip)
834 ubsecstats.hst_maxqchip = sc->sc_nqchip;
835 return;
836 }
837
838 static void
839 ubsec_setup_enckey(struct ubsec_session *ses, int algo, caddr_t key)
840 {
841
842 /* Go ahead and compute key in ubsec's byte order */
843 if (algo == CRYPTO_DES_CBC) {
844 bcopy(key, &ses->ses_deskey[0], 8);
845 bcopy(key, &ses->ses_deskey[2], 8);
846 bcopy(key, &ses->ses_deskey[4], 8);
847 } else
848 bcopy(key, ses->ses_deskey, 24);
849
850 SWAP32(ses->ses_deskey[0]);
851 SWAP32(ses->ses_deskey[1]);
852 SWAP32(ses->ses_deskey[2]);
853 SWAP32(ses->ses_deskey[3]);
854 SWAP32(ses->ses_deskey[4]);
855 SWAP32(ses->ses_deskey[5]);
856 }
857
858 static void
859 ubsec_setup_mackey(struct ubsec_session *ses, int algo, caddr_t key, int klen)
860 {
861 MD5_CTX md5ctx;
862 SHA1_CTX sha1ctx;
863 int i;
864
865 for (i = 0; i < klen; i++)
866 key[i] ^= HMAC_IPAD_VAL;
867
868 if (algo == CRYPTO_MD5_HMAC) {
869 MD5Init(&md5ctx);
870 MD5Update(&md5ctx, key, klen);
871 MD5Update(&md5ctx, hmac_ipad_buffer, MD5_HMAC_BLOCK_LEN - klen);
872 bcopy(md5ctx.state, ses->ses_hminner, sizeof(md5ctx.state));
873 } else {
874 SHA1Init(&sha1ctx);
875 SHA1Update(&sha1ctx, key, klen);
876 SHA1Update(&sha1ctx, hmac_ipad_buffer,
877 SHA1_HMAC_BLOCK_LEN - klen);
878 bcopy(sha1ctx.h.b32, ses->ses_hminner, sizeof(sha1ctx.h.b32));
879 }
880
881 for (i = 0; i < klen; i++)
882 key[i] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL);
883
884 if (algo == CRYPTO_MD5_HMAC) {
885 MD5Init(&md5ctx);
886 MD5Update(&md5ctx, key, klen);
887 MD5Update(&md5ctx, hmac_opad_buffer, MD5_HMAC_BLOCK_LEN - klen);
888 bcopy(md5ctx.state, ses->ses_hmouter, sizeof(md5ctx.state));
889 } else {
890 SHA1Init(&sha1ctx);
891 SHA1Update(&sha1ctx, key, klen);
892 SHA1Update(&sha1ctx, hmac_opad_buffer,
893 SHA1_HMAC_BLOCK_LEN - klen);
894 bcopy(sha1ctx.h.b32, ses->ses_hmouter, sizeof(sha1ctx.h.b32));
895 }
896
897 for (i = 0; i < klen; i++)
898 key[i] ^= HMAC_OPAD_VAL;
899 }
900
901 /*
902 * Allocate a new 'session' and return an encoded session id. 'sidp'
903 * contains our registration id, and should contain an encoded session
904 * id on successful allocation.
905 */
906 static int
907 ubsec_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri)
908 {
909 struct ubsec_softc *sc = device_get_softc(dev);
910 struct cryptoini *c, *encini = NULL, *macini = NULL;
911 struct ubsec_session *ses = NULL;
912 int sesn;
913
914 if (sidp == NULL || cri == NULL || sc == NULL)
915 return (EINVAL);
916
917 for (c = cri; c != NULL; c = c->cri_next) {
918 if (c->cri_alg == CRYPTO_MD5_HMAC ||
919 c->cri_alg == CRYPTO_SHA1_HMAC) {
920 if (macini)
921 return (EINVAL);
922 macini = c;
923 } else if (c->cri_alg == CRYPTO_DES_CBC ||
924 c->cri_alg == CRYPTO_3DES_CBC) {
925 if (encini)
926 return (EINVAL);
927 encini = c;
928 } else
929 return (EINVAL);
930 }
931 if (encini == NULL && macini == NULL)
932 return (EINVAL);
933
934 if (sc->sc_sessions == NULL) {
935 ses = sc->sc_sessions = (struct ubsec_session *)malloc(
936 sizeof(struct ubsec_session), M_DEVBUF, M_NOWAIT);
937 if (ses == NULL)
938 return (ENOMEM);
939 sesn = 0;
940 sc->sc_nsessions = 1;
941 } else {
942 for (sesn = 0; sesn < sc->sc_nsessions; sesn++) {
943 if (sc->sc_sessions[sesn].ses_used == 0) {
944 ses = &sc->sc_sessions[sesn];
945 break;
946 }
947 }
948
949 if (ses == NULL) {
950 sesn = sc->sc_nsessions;
951 ses = (struct ubsec_session *)malloc((sesn + 1) *
952 sizeof(struct ubsec_session), M_DEVBUF, M_NOWAIT);
953 if (ses == NULL)
954 return (ENOMEM);
955 bcopy(sc->sc_sessions, ses, sesn *
956 sizeof(struct ubsec_session));
957 bzero(sc->sc_sessions, sesn *
958 sizeof(struct ubsec_session));
959 free(sc->sc_sessions, M_DEVBUF);
960 sc->sc_sessions = ses;
961 ses = &sc->sc_sessions[sesn];
962 sc->sc_nsessions++;
963 }
964 }
965 bzero(ses, sizeof(struct ubsec_session));
966 ses->ses_used = 1;
967
968 if (encini) {
969 /* get an IV, network byte order */
970 /* XXX may read fewer than requested */
971 read_random(ses->ses_iv, sizeof(ses->ses_iv));
972
973 if (encini->cri_key != NULL) {
974 ubsec_setup_enckey(ses, encini->cri_alg,
975 encini->cri_key);
976 }
977 }
978
979 if (macini) {
980 ses->ses_mlen = macini->cri_mlen;
981 if (ses->ses_mlen == 0) {
982 if (macini->cri_alg == CRYPTO_MD5_HMAC)
983 ses->ses_mlen = MD5_HASH_LEN;
984 else
985 ses->ses_mlen = SHA1_HASH_LEN;
986 }
987
988 if (macini->cri_key != NULL) {
989 ubsec_setup_mackey(ses, macini->cri_alg,
990 macini->cri_key, macini->cri_klen / 8);
991 }
992 }
993
994 *sidp = UBSEC_SID(device_get_unit(sc->sc_dev), sesn);
995 return (0);
996 }
997
998 /*
999 * Deallocate a session.
1000 */
1001 static int
1002 ubsec_freesession(device_t dev, u_int64_t tid)
1003 {
1004 struct ubsec_softc *sc = device_get_softc(dev);
1005 int session, ret;
1006 u_int32_t sid = CRYPTO_SESID2LID(tid);
1007
1008 if (sc == NULL)
1009 return (EINVAL);
1010
1011 session = UBSEC_SESSION(sid);
1012 if (session < sc->sc_nsessions) {
1013 bzero(&sc->sc_sessions[session],
1014 sizeof(sc->sc_sessions[session]));
1015 ret = 0;
1016 } else
1017 ret = EINVAL;
1018
1019 return (ret);
1020 }
1021
1022 static void
1023 ubsec_op_cb(void *arg, bus_dma_segment_t *seg, int nsegs, bus_size_t mapsize, int error)
1024 {
1025 struct ubsec_operand *op = arg;
1026
1027 KASSERT(nsegs <= UBS_MAX_SCATTER,
1028 ("Too many DMA segments returned when mapping operand"));
1029 #ifdef UBSEC_DEBUG
1030 if (ubsec_debug)
1031 printf("ubsec_op_cb: mapsize %u nsegs %d error %d\n",
1032 (u_int) mapsize, nsegs, error);
1033 #endif
1034 if (error != 0)
1035 return;
1036 op->mapsize = mapsize;
1037 op->nsegs = nsegs;
1038 bcopy(seg, op->segs, nsegs * sizeof (seg[0]));
1039 }
1040
1041 static int
1042 ubsec_process(device_t dev, struct cryptop *crp, int hint)
1043 {
1044 struct ubsec_softc *sc = device_get_softc(dev);
1045 struct ubsec_q *q = NULL;
1046 int err = 0, i, j, nicealign;
1047 struct cryptodesc *crd1, *crd2, *maccrd, *enccrd;
1048 int encoffset = 0, macoffset = 0, cpskip, cpoffset;
1049 int sskip, dskip, stheend, dtheend;
1050 int16_t coffset;
1051 struct ubsec_session *ses;
1052 struct ubsec_pktctx ctx;
1053 struct ubsec_dma *dmap = NULL;
1054
1055 if (crp == NULL || crp->crp_callback == NULL || sc == NULL) {
1056 ubsecstats.hst_invalid++;
1057 return (EINVAL);
1058 }
1059 if (UBSEC_SESSION(crp->crp_sid) >= sc->sc_nsessions) {
1060 ubsecstats.hst_badsession++;
1061 return (EINVAL);
1062 }
1063
1064 mtx_lock(&sc->sc_freeqlock);
1065 if (SIMPLEQ_EMPTY(&sc->sc_freequeue)) {
1066 ubsecstats.hst_queuefull++;
1067 sc->sc_needwakeup |= CRYPTO_SYMQ;
1068 mtx_unlock(&sc->sc_freeqlock);
1069 return (ERESTART);
1070 }
1071 q = SIMPLEQ_FIRST(&sc->sc_freequeue);
1072 SIMPLEQ_REMOVE_HEAD(&sc->sc_freequeue, q_next);
1073 mtx_unlock(&sc->sc_freeqlock);
1074
1075 dmap = q->q_dma; /* Save dma pointer */
1076 bzero(q, sizeof(struct ubsec_q));
1077 bzero(&ctx, sizeof(ctx));
1078
1079 q->q_sesn = UBSEC_SESSION(crp->crp_sid);
1080 q->q_dma = dmap;
1081 ses = &sc->sc_sessions[q->q_sesn];
1082
1083 if (crp->crp_flags & CRYPTO_F_IMBUF) {
1084 q->q_src_m = (struct mbuf *)crp->crp_buf;
1085 q->q_dst_m = (struct mbuf *)crp->crp_buf;
1086 } else if (crp->crp_flags & CRYPTO_F_IOV) {
1087 q->q_src_io = (struct uio *)crp->crp_buf;
1088 q->q_dst_io = (struct uio *)crp->crp_buf;
1089 } else {
1090 ubsecstats.hst_badflags++;
1091 err = EINVAL;
1092 goto errout; /* XXX we don't handle contiguous blocks! */
1093 }
1094
1095 bzero(&dmap->d_dma->d_mcr, sizeof(struct ubsec_mcr));
1096
1097 dmap->d_dma->d_mcr.mcr_pkts = htole16(1);
1098 dmap->d_dma->d_mcr.mcr_flags = 0;
1099 q->q_crp = crp;
1100
1101 crd1 = crp->crp_desc;
1102 if (crd1 == NULL) {
1103 ubsecstats.hst_nodesc++;
1104 err = EINVAL;
1105 goto errout;
1106 }
1107 crd2 = crd1->crd_next;
1108
1109 if (crd2 == NULL) {
1110 if (crd1->crd_alg == CRYPTO_MD5_HMAC ||
1111 crd1->crd_alg == CRYPTO_SHA1_HMAC) {
1112 maccrd = crd1;
1113 enccrd = NULL;
1114 } else if (crd1->crd_alg == CRYPTO_DES_CBC ||
1115 crd1->crd_alg == CRYPTO_3DES_CBC) {
1116 maccrd = NULL;
1117 enccrd = crd1;
1118 } else {
1119 ubsecstats.hst_badalg++;
1120 err = EINVAL;
1121 goto errout;
1122 }
1123 } else {
1124 if ((crd1->crd_alg == CRYPTO_MD5_HMAC ||
1125 crd1->crd_alg == CRYPTO_SHA1_HMAC) &&
1126 (crd2->crd_alg == CRYPTO_DES_CBC ||
1127 crd2->crd_alg == CRYPTO_3DES_CBC) &&
1128 ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) {
1129 maccrd = crd1;
1130 enccrd = crd2;
1131 } else if ((crd1->crd_alg == CRYPTO_DES_CBC ||
1132 crd1->crd_alg == CRYPTO_3DES_CBC) &&
1133 (crd2->crd_alg == CRYPTO_MD5_HMAC ||
1134 crd2->crd_alg == CRYPTO_SHA1_HMAC) &&
1135 (crd1->crd_flags & CRD_F_ENCRYPT)) {
1136 enccrd = crd1;
1137 maccrd = crd2;
1138 } else {
1139 /*
1140 * We cannot order the ubsec as requested
1141 */
1142 ubsecstats.hst_badalg++;
1143 err = EINVAL;
1144 goto errout;
1145 }
1146 }
1147
1148 if (enccrd) {
1149 if (enccrd->crd_flags & CRD_F_KEY_EXPLICIT) {
1150 ubsec_setup_enckey(ses, enccrd->crd_alg,
1151 enccrd->crd_key);
1152 }
1153
1154 encoffset = enccrd->crd_skip;
1155 ctx.pc_flags |= htole16(UBS_PKTCTX_ENC_3DES);
1156
1157 if (enccrd->crd_flags & CRD_F_ENCRYPT) {
1158 q->q_flags |= UBSEC_QFLAGS_COPYOUTIV;
1159
1160 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
1161 bcopy(enccrd->crd_iv, ctx.pc_iv, 8);
1162 else {
1163 ctx.pc_iv[0] = ses->ses_iv[0];
1164 ctx.pc_iv[1] = ses->ses_iv[1];
1165 }
1166
1167 if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) {
1168 crypto_copyback(crp->crp_flags, crp->crp_buf,
1169 enccrd->crd_inject, 8, (caddr_t)ctx.pc_iv);
1170 }
1171 } else {
1172 ctx.pc_flags |= htole16(UBS_PKTCTX_INBOUND);
1173
1174 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
1175 bcopy(enccrd->crd_iv, ctx.pc_iv, 8);
1176 else {
1177 crypto_copydata(crp->crp_flags, crp->crp_buf,
1178 enccrd->crd_inject, 8, (caddr_t)ctx.pc_iv);
1179 }
1180 }
1181
1182 ctx.pc_deskey[0] = ses->ses_deskey[0];
1183 ctx.pc_deskey[1] = ses->ses_deskey[1];
1184 ctx.pc_deskey[2] = ses->ses_deskey[2];
1185 ctx.pc_deskey[3] = ses->ses_deskey[3];
1186 ctx.pc_deskey[4] = ses->ses_deskey[4];
1187 ctx.pc_deskey[5] = ses->ses_deskey[5];
1188 SWAP32(ctx.pc_iv[0]);
1189 SWAP32(ctx.pc_iv[1]);
1190 }
1191
1192 if (maccrd) {
1193 if (maccrd->crd_flags & CRD_F_KEY_EXPLICIT) {
1194 ubsec_setup_mackey(ses, maccrd->crd_alg,
1195 maccrd->crd_key, maccrd->crd_klen / 8);
1196 }
1197
1198 macoffset = maccrd->crd_skip;
1199
1200 if (maccrd->crd_alg == CRYPTO_MD5_HMAC)
1201 ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_MD5);
1202 else
1203 ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_SHA1);
1204
1205 for (i = 0; i < 5; i++) {
1206 ctx.pc_hminner[i] = ses->ses_hminner[i];
1207 ctx.pc_hmouter[i] = ses->ses_hmouter[i];
1208
1209 HTOLE32(ctx.pc_hminner[i]);
1210 HTOLE32(ctx.pc_hmouter[i]);
1211 }
1212 }
1213
1214 if (enccrd && maccrd) {
1215 /*
1216 * ubsec cannot handle packets where the end of encryption
1217 * and authentication are not the same, or where the
1218 * encrypted part begins before the authenticated part.
1219 */
1220 if ((encoffset + enccrd->crd_len) !=
1221 (macoffset + maccrd->crd_len)) {
1222 ubsecstats.hst_lenmismatch++;
1223 err = EINVAL;
1224 goto errout;
1225 }
1226 if (enccrd->crd_skip < maccrd->crd_skip) {
1227 ubsecstats.hst_skipmismatch++;
1228 err = EINVAL;
1229 goto errout;
1230 }
1231 sskip = maccrd->crd_skip;
1232 cpskip = dskip = enccrd->crd_skip;
1233 stheend = maccrd->crd_len;
1234 dtheend = enccrd->crd_len;
1235 coffset = enccrd->crd_skip - maccrd->crd_skip;
1236 cpoffset = cpskip + dtheend;
1237 #ifdef UBSEC_DEBUG
1238 if (ubsec_debug) {
1239 printf("mac: skip %d, len %d, inject %d\n",
1240 maccrd->crd_skip, maccrd->crd_len, maccrd->crd_inject);
1241 printf("enc: skip %d, len %d, inject %d\n",
1242 enccrd->crd_skip, enccrd->crd_len, enccrd->crd_inject);
1243 printf("src: skip %d, len %d\n", sskip, stheend);
1244 printf("dst: skip %d, len %d\n", dskip, dtheend);
1245 printf("ubs: coffset %d, pktlen %d, cpskip %d, cpoffset %d\n",
1246 coffset, stheend, cpskip, cpoffset);
1247 }
1248 #endif
1249 } else {
1250 cpskip = dskip = sskip = macoffset + encoffset;
1251 dtheend = stheend = (enccrd)?enccrd->crd_len:maccrd->crd_len;
1252 cpoffset = cpskip + dtheend;
1253 coffset = 0;
1254 }
1255 ctx.pc_offset = htole16(coffset >> 2);
1256
1257 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &q->q_src_map)) {
1258 ubsecstats.hst_nomap++;
1259 err = ENOMEM;
1260 goto errout;
1261 }
1262 if (crp->crp_flags & CRYPTO_F_IMBUF) {
1263 if (bus_dmamap_load_mbuf(sc->sc_dmat, q->q_src_map,
1264 q->q_src_m, ubsec_op_cb, &q->q_src, BUS_DMA_NOWAIT) != 0) {
1265 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
1266 q->q_src_map = NULL;
1267 ubsecstats.hst_noload++;
1268 err = ENOMEM;
1269 goto errout;
1270 }
1271 } else if (crp->crp_flags & CRYPTO_F_IOV) {
1272 if (bus_dmamap_load_uio(sc->sc_dmat, q->q_src_map,
1273 q->q_src_io, ubsec_op_cb, &q->q_src, BUS_DMA_NOWAIT) != 0) {
1274 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
1275 q->q_src_map = NULL;
1276 ubsecstats.hst_noload++;
1277 err = ENOMEM;
1278 goto errout;
1279 }
1280 }
1281 nicealign = ubsec_dmamap_aligned(&q->q_src);
1282
1283 dmap->d_dma->d_mcr.mcr_pktlen = htole16(stheend);
1284
1285 #ifdef UBSEC_DEBUG
1286 if (ubsec_debug)
1287 printf("src skip: %d nicealign: %u\n", sskip, nicealign);
1288 #endif
1289 for (i = j = 0; i < q->q_src_nsegs; i++) {
1290 struct ubsec_pktbuf *pb;
1291 bus_size_t packl = q->q_src_segs[i].ds_len;
1292 bus_addr_t packp = q->q_src_segs[i].ds_addr;
1293
1294 if (sskip >= packl) {
1295 sskip -= packl;
1296 continue;
1297 }
1298
1299 packl -= sskip;
1300 packp += sskip;
1301 sskip = 0;
1302
1303 if (packl > 0xfffc) {
1304 err = EIO;
1305 goto errout;
1306 }
1307
1308 if (j == 0)
1309 pb = &dmap->d_dma->d_mcr.mcr_ipktbuf;
1310 else
1311 pb = &dmap->d_dma->d_sbuf[j - 1];
1312
1313 pb->pb_addr = htole32(packp);
1314
1315 if (stheend) {
1316 if (packl > stheend) {
1317 pb->pb_len = htole32(stheend);
1318 stheend = 0;
1319 } else {
1320 pb->pb_len = htole32(packl);
1321 stheend -= packl;
1322 }
1323 } else
1324 pb->pb_len = htole32(packl);
1325
1326 if ((i + 1) == q->q_src_nsegs)
1327 pb->pb_next = 0;
1328 else
1329 pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
1330 offsetof(struct ubsec_dmachunk, d_sbuf[j]));
1331 j++;
1332 }
1333
1334 if (enccrd == NULL && maccrd != NULL) {
1335 dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr = 0;
1336 dmap->d_dma->d_mcr.mcr_opktbuf.pb_len = 0;
1337 dmap->d_dma->d_mcr.mcr_opktbuf.pb_next = htole32(dmap->d_alloc.dma_paddr +
1338 offsetof(struct ubsec_dmachunk, d_macbuf[0]));
1339 #ifdef UBSEC_DEBUG
1340 if (ubsec_debug)
1341 printf("opkt: %x %x %x\n",
1342 dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr,
1343 dmap->d_dma->d_mcr.mcr_opktbuf.pb_len,
1344 dmap->d_dma->d_mcr.mcr_opktbuf.pb_next);
1345 #endif
1346 } else {
1347 if (crp->crp_flags & CRYPTO_F_IOV) {
1348 if (!nicealign) {
1349 ubsecstats.hst_iovmisaligned++;
1350 err = EINVAL;
1351 goto errout;
1352 }
1353 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT,
1354 &q->q_dst_map)) {
1355 ubsecstats.hst_nomap++;
1356 err = ENOMEM;
1357 goto errout;
1358 }
1359 if (bus_dmamap_load_uio(sc->sc_dmat, q->q_dst_map,
1360 q->q_dst_io, ubsec_op_cb, &q->q_dst, BUS_DMA_NOWAIT) != 0) {
1361 bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
1362 q->q_dst_map = NULL;
1363 ubsecstats.hst_noload++;
1364 err = ENOMEM;
1365 goto errout;
1366 }
1367 } else if (crp->crp_flags & CRYPTO_F_IMBUF) {
1368 if (nicealign) {
1369 q->q_dst = q->q_src;
1370 } else {
1371 int totlen, len;
1372 struct mbuf *m, *top, **mp;
1373
1374 ubsecstats.hst_unaligned++;
1375 totlen = q->q_src_mapsize;
1376 if (totlen >= MINCLSIZE) {
1377 m = m_getcl(M_DONTWAIT, MT_DATA,
1378 q->q_src_m->m_flags & M_PKTHDR);
1379 len = MCLBYTES;
1380 } else if (q->q_src_m->m_flags & M_PKTHDR) {
1381 m = m_gethdr(M_DONTWAIT, MT_DATA);
1382 len = MHLEN;
1383 } else {
1384 m = m_get(M_DONTWAIT, MT_DATA);
1385 len = MLEN;
1386 }
1387 if (m && q->q_src_m->m_flags & M_PKTHDR &&
1388 !m_dup_pkthdr(m, q->q_src_m, M_DONTWAIT)) {
1389 m_free(m);
1390 m = NULL;
1391 }
1392 if (m == NULL) {
1393 ubsecstats.hst_nombuf++;
1394 err = sc->sc_nqueue ? ERESTART : ENOMEM;
1395 goto errout;
1396 }
1397 m->m_len = len = min(totlen, len);
1398 totlen -= len;
1399 top = m;
1400 mp = ⊤
1401
1402 while (totlen > 0) {
1403 if (totlen >= MINCLSIZE) {
1404 m = m_getcl(M_DONTWAIT,
1405 MT_DATA, 0);
1406 len = MCLBYTES;
1407 } else {
1408 m = m_get(M_DONTWAIT, MT_DATA);
1409 len = MLEN;
1410 }
1411 if (m == NULL) {
1412 m_freem(top);
1413 ubsecstats.hst_nombuf++;
1414 err = sc->sc_nqueue ? ERESTART : ENOMEM;
1415 goto errout;
1416 }
1417 m->m_len = len = min(totlen, len);
1418 totlen -= len;
1419 *mp = m;
1420 mp = &m->m_next;
1421 }
1422 q->q_dst_m = top;
1423 ubsec_mcopy(q->q_src_m, q->q_dst_m,
1424 cpskip, cpoffset);
1425 if (bus_dmamap_create(sc->sc_dmat,
1426 BUS_DMA_NOWAIT, &q->q_dst_map) != 0) {
1427 ubsecstats.hst_nomap++;
1428 err = ENOMEM;
1429 goto errout;
1430 }
1431 if (bus_dmamap_load_mbuf(sc->sc_dmat,
1432 q->q_dst_map, q->q_dst_m,
1433 ubsec_op_cb, &q->q_dst,
1434 BUS_DMA_NOWAIT) != 0) {
1435 bus_dmamap_destroy(sc->sc_dmat,
1436 q->q_dst_map);
1437 q->q_dst_map = NULL;
1438 ubsecstats.hst_noload++;
1439 err = ENOMEM;
1440 goto errout;
1441 }
1442 }
1443 } else {
1444 ubsecstats.hst_badflags++;
1445 err = EINVAL;
1446 goto errout;
1447 }
1448
1449 #ifdef UBSEC_DEBUG
1450 if (ubsec_debug)
1451 printf("dst skip: %d\n", dskip);
1452 #endif
1453 for (i = j = 0; i < q->q_dst_nsegs; i++) {
1454 struct ubsec_pktbuf *pb;
1455 bus_size_t packl = q->q_dst_segs[i].ds_len;
1456 bus_addr_t packp = q->q_dst_segs[i].ds_addr;
1457
1458 if (dskip >= packl) {
1459 dskip -= packl;
1460 continue;
1461 }
1462
1463 packl -= dskip;
1464 packp += dskip;
1465 dskip = 0;
1466
1467 if (packl > 0xfffc) {
1468 err = EIO;
1469 goto errout;
1470 }
1471
1472 if (j == 0)
1473 pb = &dmap->d_dma->d_mcr.mcr_opktbuf;
1474 else
1475 pb = &dmap->d_dma->d_dbuf[j - 1];
1476
1477 pb->pb_addr = htole32(packp);
1478
1479 if (dtheend) {
1480 if (packl > dtheend) {
1481 pb->pb_len = htole32(dtheend);
1482 dtheend = 0;
1483 } else {
1484 pb->pb_len = htole32(packl);
1485 dtheend -= packl;
1486 }
1487 } else
1488 pb->pb_len = htole32(packl);
1489
1490 if ((i + 1) == q->q_dst_nsegs) {
1491 if (maccrd)
1492 pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
1493 offsetof(struct ubsec_dmachunk, d_macbuf[0]));
1494 else
1495 pb->pb_next = 0;
1496 } else
1497 pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
1498 offsetof(struct ubsec_dmachunk, d_dbuf[j]));
1499 j++;
1500 }
1501 }
1502
1503 dmap->d_dma->d_mcr.mcr_cmdctxp = htole32(dmap->d_alloc.dma_paddr +
1504 offsetof(struct ubsec_dmachunk, d_ctx));
1505
1506 if (sc->sc_flags & UBS_FLAGS_LONGCTX) {
1507 struct ubsec_pktctx_long *ctxl;
1508
1509 ctxl = (struct ubsec_pktctx_long *)(dmap->d_alloc.dma_vaddr +
1510 offsetof(struct ubsec_dmachunk, d_ctx));
1511
1512 /* transform small context into long context */
1513 ctxl->pc_len = htole16(sizeof(struct ubsec_pktctx_long));
1514 ctxl->pc_type = htole16(UBS_PKTCTX_TYPE_IPSEC);
1515 ctxl->pc_flags = ctx.pc_flags;
1516 ctxl->pc_offset = ctx.pc_offset;
1517 for (i = 0; i < 6; i++)
1518 ctxl->pc_deskey[i] = ctx.pc_deskey[i];
1519 for (i = 0; i < 5; i++)
1520 ctxl->pc_hminner[i] = ctx.pc_hminner[i];
1521 for (i = 0; i < 5; i++)
1522 ctxl->pc_hmouter[i] = ctx.pc_hmouter[i];
1523 ctxl->pc_iv[0] = ctx.pc_iv[0];
1524 ctxl->pc_iv[1] = ctx.pc_iv[1];
1525 } else
1526 bcopy(&ctx, dmap->d_alloc.dma_vaddr +
1527 offsetof(struct ubsec_dmachunk, d_ctx),
1528 sizeof(struct ubsec_pktctx));
1529
1530 mtx_lock(&sc->sc_mcr1lock);
1531 SIMPLEQ_INSERT_TAIL(&sc->sc_queue, q, q_next);
1532 sc->sc_nqueue++;
1533 ubsecstats.hst_ipackets++;
1534 ubsecstats.hst_ibytes += dmap->d_alloc.dma_size;
1535 if ((hint & CRYPTO_HINT_MORE) == 0 || sc->sc_nqueue >= UBS_MAX_AGGR)
1536 ubsec_feed(sc);
1537 mtx_unlock(&sc->sc_mcr1lock);
1538 return (0);
1539
1540 errout:
1541 if (q != NULL) {
1542 if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m))
1543 m_freem(q->q_dst_m);
1544
1545 if (q->q_dst_map != NULL && q->q_dst_map != q->q_src_map) {
1546 bus_dmamap_unload(sc->sc_dmat, q->q_dst_map);
1547 bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
1548 }
1549 if (q->q_src_map != NULL) {
1550 bus_dmamap_unload(sc->sc_dmat, q->q_src_map);
1551 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
1552 }
1553 }
1554 if (q != NULL || err == ERESTART) {
1555 mtx_lock(&sc->sc_freeqlock);
1556 if (q != NULL)
1557 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
1558 if (err == ERESTART)
1559 sc->sc_needwakeup |= CRYPTO_SYMQ;
1560 mtx_unlock(&sc->sc_freeqlock);
1561 }
1562 if (err != ERESTART) {
1563 crp->crp_etype = err;
1564 crypto_done(crp);
1565 }
1566 return (err);
1567 }
1568
1569 static void
1570 ubsec_callback(struct ubsec_softc *sc, struct ubsec_q *q)
1571 {
1572 struct cryptop *crp = (struct cryptop *)q->q_crp;
1573 struct cryptodesc *crd;
1574 struct ubsec_dma *dmap = q->q_dma;
1575
1576 ubsecstats.hst_opackets++;
1577 ubsecstats.hst_obytes += dmap->d_alloc.dma_size;
1578
1579 ubsec_dma_sync(&dmap->d_alloc,
1580 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
1581 if (q->q_dst_map != NULL && q->q_dst_map != q->q_src_map) {
1582 bus_dmamap_sync(sc->sc_dmat, q->q_dst_map,
1583 BUS_DMASYNC_POSTREAD);
1584 bus_dmamap_unload(sc->sc_dmat, q->q_dst_map);
1585 bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
1586 }
1587 bus_dmamap_sync(sc->sc_dmat, q->q_src_map, BUS_DMASYNC_POSTWRITE);
1588 bus_dmamap_unload(sc->sc_dmat, q->q_src_map);
1589 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
1590
1591 if ((crp->crp_flags & CRYPTO_F_IMBUF) && (q->q_src_m != q->q_dst_m)) {
1592 m_freem(q->q_src_m);
1593 crp->crp_buf = (caddr_t)q->q_dst_m;
1594 }
1595
1596 /* copy out IV for future use */
1597 if (q->q_flags & UBSEC_QFLAGS_COPYOUTIV) {
1598 for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
1599 if (crd->crd_alg != CRYPTO_DES_CBC &&
1600 crd->crd_alg != CRYPTO_3DES_CBC)
1601 continue;
1602 crypto_copydata(crp->crp_flags, crp->crp_buf,
1603 crd->crd_skip + crd->crd_len - 8, 8,
1604 (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv);
1605 break;
1606 }
1607 }
1608
1609 for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
1610 if (crd->crd_alg != CRYPTO_MD5_HMAC &&
1611 crd->crd_alg != CRYPTO_SHA1_HMAC)
1612 continue;
1613 crypto_copyback(crp->crp_flags, crp->crp_buf, crd->crd_inject,
1614 sc->sc_sessions[q->q_sesn].ses_mlen,
1615 (caddr_t)dmap->d_dma->d_macbuf);
1616 break;
1617 }
1618 mtx_lock(&sc->sc_freeqlock);
1619 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
1620 mtx_unlock(&sc->sc_freeqlock);
1621 crypto_done(crp);
1622 }
1623
1624 static void
1625 ubsec_mcopy(struct mbuf *srcm, struct mbuf *dstm, int hoffset, int toffset)
1626 {
1627 int i, j, dlen, slen;
1628 caddr_t dptr, sptr;
1629
1630 j = 0;
1631 sptr = srcm->m_data;
1632 slen = srcm->m_len;
1633 dptr = dstm->m_data;
1634 dlen = dstm->m_len;
1635
1636 while (1) {
1637 for (i = 0; i < min(slen, dlen); i++) {
1638 if (j < hoffset || j >= toffset)
1639 *dptr++ = *sptr++;
1640 slen--;
1641 dlen--;
1642 j++;
1643 }
1644 if (slen == 0) {
1645 srcm = srcm->m_next;
1646 if (srcm == NULL)
1647 return;
1648 sptr = srcm->m_data;
1649 slen = srcm->m_len;
1650 }
1651 if (dlen == 0) {
1652 dstm = dstm->m_next;
1653 if (dstm == NULL)
1654 return;
1655 dptr = dstm->m_data;
1656 dlen = dstm->m_len;
1657 }
1658 }
1659 }
1660
1661 /*
1662 * feed the key generator, must be called at splimp() or higher.
1663 */
1664 static int
1665 ubsec_feed2(struct ubsec_softc *sc)
1666 {
1667 struct ubsec_q2 *q;
1668
1669 while (!SIMPLEQ_EMPTY(&sc->sc_queue2)) {
1670 if (READ_REG(sc, BS_STAT) & BS_STAT_MCR2_FULL)
1671 break;
1672 q = SIMPLEQ_FIRST(&sc->sc_queue2);
1673
1674 ubsec_dma_sync(&q->q_mcr,
1675 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1676 ubsec_dma_sync(&q->q_ctx, BUS_DMASYNC_PREWRITE);
1677
1678 WRITE_REG(sc, BS_MCR2, q->q_mcr.dma_paddr);
1679 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue2, q_next);
1680 --sc->sc_nqueue2;
1681 SIMPLEQ_INSERT_TAIL(&sc->sc_qchip2, q, q_next);
1682 }
1683 return (0);
1684 }
1685
1686 /*
1687 * Callback for handling random numbers
1688 */
1689 static void
1690 ubsec_callback2(struct ubsec_softc *sc, struct ubsec_q2 *q)
1691 {
1692 struct cryptkop *krp;
1693 struct ubsec_ctx_keyop *ctx;
1694
1695 ctx = (struct ubsec_ctx_keyop *)q->q_ctx.dma_vaddr;
1696 ubsec_dma_sync(&q->q_ctx, BUS_DMASYNC_POSTWRITE);
1697
1698 switch (q->q_type) {
1699 #ifndef UBSEC_NO_RNG
1700 case UBS_CTXOP_RNGBYPASS: {
1701 struct ubsec_q2_rng *rng = (struct ubsec_q2_rng *)q;
1702
1703 ubsec_dma_sync(&rng->rng_buf, BUS_DMASYNC_POSTREAD);
1704 (*sc->sc_harvest)(sc->sc_rndtest,
1705 rng->rng_buf.dma_vaddr,
1706 UBSEC_RNG_BUFSIZ*sizeof (u_int32_t));
1707 rng->rng_used = 0;
1708 callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc);
1709 break;
1710 }
1711 #endif
1712 case UBS_CTXOP_MODEXP: {
1713 struct ubsec_q2_modexp *me = (struct ubsec_q2_modexp *)q;
1714 u_int rlen, clen;
1715
1716 krp = me->me_krp;
1717 rlen = (me->me_modbits + 7) / 8;
1718 clen = (krp->krp_param[krp->krp_iparams].crp_nbits + 7) / 8;
1719
1720 ubsec_dma_sync(&me->me_M, BUS_DMASYNC_POSTWRITE);
1721 ubsec_dma_sync(&me->me_E, BUS_DMASYNC_POSTWRITE);
1722 ubsec_dma_sync(&me->me_C, BUS_DMASYNC_POSTREAD);
1723 ubsec_dma_sync(&me->me_epb, BUS_DMASYNC_POSTWRITE);
1724
1725 if (clen < rlen)
1726 krp->krp_status = E2BIG;
1727 else {
1728 if (sc->sc_flags & UBS_FLAGS_HWNORM) {
1729 bzero(krp->krp_param[krp->krp_iparams].crp_p,
1730 (krp->krp_param[krp->krp_iparams].crp_nbits
1731 + 7) / 8);
1732 bcopy(me->me_C.dma_vaddr,
1733 krp->krp_param[krp->krp_iparams].crp_p,
1734 (me->me_modbits + 7) / 8);
1735 } else
1736 ubsec_kshift_l(me->me_shiftbits,
1737 me->me_C.dma_vaddr, me->me_normbits,
1738 krp->krp_param[krp->krp_iparams].crp_p,
1739 krp->krp_param[krp->krp_iparams].crp_nbits);
1740 }
1741
1742 crypto_kdone(krp);
1743
1744 /* bzero all potentially sensitive data */
1745 bzero(me->me_E.dma_vaddr, me->me_E.dma_size);
1746 bzero(me->me_M.dma_vaddr, me->me_M.dma_size);
1747 bzero(me->me_C.dma_vaddr, me->me_C.dma_size);
1748 bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size);
1749
1750 /* Can't free here, so put us on the free list. */
1751 SIMPLEQ_INSERT_TAIL(&sc->sc_q2free, &me->me_q, q_next);
1752 break;
1753 }
1754 case UBS_CTXOP_RSAPRIV: {
1755 struct ubsec_q2_rsapriv *rp = (struct ubsec_q2_rsapriv *)q;
1756 u_int len;
1757
1758 krp = rp->rpr_krp;
1759 ubsec_dma_sync(&rp->rpr_msgin, BUS_DMASYNC_POSTWRITE);
1760 ubsec_dma_sync(&rp->rpr_msgout, BUS_DMASYNC_POSTREAD);
1761
1762 len = (krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT].crp_nbits + 7) / 8;
1763 bcopy(rp->rpr_msgout.dma_vaddr,
1764 krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT].crp_p, len);
1765
1766 crypto_kdone(krp);
1767
1768 bzero(rp->rpr_msgin.dma_vaddr, rp->rpr_msgin.dma_size);
1769 bzero(rp->rpr_msgout.dma_vaddr, rp->rpr_msgout.dma_size);
1770 bzero(rp->rpr_q.q_ctx.dma_vaddr, rp->rpr_q.q_ctx.dma_size);
1771
1772 /* Can't free here, so put us on the free list. */
1773 SIMPLEQ_INSERT_TAIL(&sc->sc_q2free, &rp->rpr_q, q_next);
1774 break;
1775 }
1776 default:
1777 device_printf(sc->sc_dev, "unknown ctx op: %x\n",
1778 letoh16(ctx->ctx_op));
1779 break;
1780 }
1781 }
1782
1783 #ifndef UBSEC_NO_RNG
1784 static void
1785 ubsec_rng(void *vsc)
1786 {
1787 struct ubsec_softc *sc = vsc;
1788 struct ubsec_q2_rng *rng = &sc->sc_rng;
1789 struct ubsec_mcr *mcr;
1790 struct ubsec_ctx_rngbypass *ctx;
1791
1792 mtx_lock(&sc->sc_mcr2lock);
1793 if (rng->rng_used) {
1794 mtx_unlock(&sc->sc_mcr2lock);
1795 return;
1796 }
1797 sc->sc_nqueue2++;
1798 if (sc->sc_nqueue2 >= UBS_MAX_NQUEUE)
1799 goto out;
1800
1801 mcr = (struct ubsec_mcr *)rng->rng_q.q_mcr.dma_vaddr;
1802 ctx = (struct ubsec_ctx_rngbypass *)rng->rng_q.q_ctx.dma_vaddr;
1803
1804 mcr->mcr_pkts = htole16(1);
1805 mcr->mcr_flags = 0;
1806 mcr->mcr_cmdctxp = htole32(rng->rng_q.q_ctx.dma_paddr);
1807 mcr->mcr_ipktbuf.pb_addr = mcr->mcr_ipktbuf.pb_next = 0;
1808 mcr->mcr_ipktbuf.pb_len = 0;
1809 mcr->mcr_reserved = mcr->mcr_pktlen = 0;
1810 mcr->mcr_opktbuf.pb_addr = htole32(rng->rng_buf.dma_paddr);
1811 mcr->mcr_opktbuf.pb_len = htole32(((sizeof(u_int32_t) * UBSEC_RNG_BUFSIZ)) &
1812 UBS_PKTBUF_LEN);
1813 mcr->mcr_opktbuf.pb_next = 0;
1814
1815 ctx->rbp_len = htole16(sizeof(struct ubsec_ctx_rngbypass));
1816 ctx->rbp_op = htole16(UBS_CTXOP_RNGBYPASS);
1817 rng->rng_q.q_type = UBS_CTXOP_RNGBYPASS;
1818
1819 ubsec_dma_sync(&rng->rng_buf, BUS_DMASYNC_PREREAD);
1820
1821 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &rng->rng_q, q_next);
1822 rng->rng_used = 1;
1823 ubsec_feed2(sc);
1824 ubsecstats.hst_rng++;
1825 mtx_unlock(&sc->sc_mcr2lock);
1826
1827 return;
1828
1829 out:
1830 /*
1831 * Something weird happened, generate our own call back.
1832 */
1833 sc->sc_nqueue2--;
1834 mtx_unlock(&sc->sc_mcr2lock);
1835 callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc);
1836 }
1837 #endif /* UBSEC_NO_RNG */
1838
1839 static void
1840 ubsec_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1841 {
1842 bus_addr_t *paddr = (bus_addr_t*) arg;
1843 *paddr = segs->ds_addr;
1844 }
1845
1846 static int
1847 ubsec_dma_malloc(
1848 struct ubsec_softc *sc,
1849 bus_size_t size,
1850 struct ubsec_dma_alloc *dma,
1851 int mapflags
1852 )
1853 {
1854 int r;
1855
1856 /* XXX could specify sc_dmat as parent but that just adds overhead */
1857 r = bus_dma_tag_create(NULL, /* parent */
1858 1, 0, /* alignment, bounds */
1859 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1860 BUS_SPACE_MAXADDR, /* highaddr */
1861 NULL, NULL, /* filter, filterarg */
1862 size, /* maxsize */
1863 1, /* nsegments */
1864 size, /* maxsegsize */
1865 BUS_DMA_ALLOCNOW, /* flags */
1866 NULL, NULL, /* lockfunc, lockarg */
1867 &dma->dma_tag);
1868 if (r != 0) {
1869 device_printf(sc->sc_dev, "ubsec_dma_malloc: "
1870 "bus_dma_tag_create failed; error %u\n", r);
1871 goto fail_0;
1872 }
1873
1874 r = bus_dmamap_create(dma->dma_tag, BUS_DMA_NOWAIT, &dma->dma_map);
1875 if (r != 0) {
1876 device_printf(sc->sc_dev, "ubsec_dma_malloc: "
1877 "bus_dmamap_create failed; error %u\n", r);
1878 goto fail_1;
1879 }
1880
1881 r = bus_dmamem_alloc(dma->dma_tag, (void**) &dma->dma_vaddr,
1882 BUS_DMA_NOWAIT, &dma->dma_map);
1883 if (r != 0) {
1884 device_printf(sc->sc_dev, "ubsec_dma_malloc: "
1885 "bus_dmammem_alloc failed; size %zu, error %u\n",
1886 size, r);
1887 goto fail_2;
1888 }
1889
1890 r = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr,
1891 size,
1892 ubsec_dmamap_cb,
1893 &dma->dma_paddr,
1894 mapflags | BUS_DMA_NOWAIT);
1895 if (r != 0) {
1896 device_printf(sc->sc_dev, "ubsec_dma_malloc: "
1897 "bus_dmamap_load failed; error %u\n", r);
1898 goto fail_3;
1899 }
1900
1901 dma->dma_size = size;
1902 return (0);
1903
1904 fail_3:
1905 bus_dmamap_unload(dma->dma_tag, dma->dma_map);
1906 fail_2:
1907 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
1908 fail_1:
1909 bus_dmamap_destroy(dma->dma_tag, dma->dma_map);
1910 bus_dma_tag_destroy(dma->dma_tag);
1911 fail_0:
1912 dma->dma_map = NULL;
1913 dma->dma_tag = NULL;
1914 return (r);
1915 }
1916
1917 static void
1918 ubsec_dma_free(struct ubsec_softc *sc, struct ubsec_dma_alloc *dma)
1919 {
1920 bus_dmamap_unload(dma->dma_tag, dma->dma_map);
1921 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
1922 bus_dmamap_destroy(dma->dma_tag, dma->dma_map);
1923 bus_dma_tag_destroy(dma->dma_tag);
1924 }
1925
1926 /*
1927 * Resets the board. Values in the regesters are left as is
1928 * from the reset (i.e. initial values are assigned elsewhere).
1929 */
1930 static void
1931 ubsec_reset_board(struct ubsec_softc *sc)
1932 {
1933 volatile u_int32_t ctrl;
1934
1935 ctrl = READ_REG(sc, BS_CTRL);
1936 ctrl |= BS_CTRL_RESET;
1937 WRITE_REG(sc, BS_CTRL, ctrl);
1938
1939 /*
1940 * Wait aprox. 30 PCI clocks = 900 ns = 0.9 us
1941 */
1942 DELAY(10);
1943 }
1944
1945 /*
1946 * Init Broadcom registers
1947 */
1948 static void
1949 ubsec_init_board(struct ubsec_softc *sc)
1950 {
1951 u_int32_t ctrl;
1952
1953 ctrl = READ_REG(sc, BS_CTRL);
1954 ctrl &= ~(BS_CTRL_BE32 | BS_CTRL_BE64);
1955 ctrl |= BS_CTRL_LITTLE_ENDIAN | BS_CTRL_MCR1INT;
1956
1957 if (sc->sc_flags & (UBS_FLAGS_KEY|UBS_FLAGS_RNG))
1958 ctrl |= BS_CTRL_MCR2INT;
1959 else
1960 ctrl &= ~BS_CTRL_MCR2INT;
1961
1962 if (sc->sc_flags & UBS_FLAGS_HWNORM)
1963 ctrl &= ~BS_CTRL_SWNORM;
1964
1965 WRITE_REG(sc, BS_CTRL, ctrl);
1966 }
1967
1968 /*
1969 * Init Broadcom PCI registers
1970 */
1971 static void
1972 ubsec_init_pciregs(device_t dev)
1973 {
1974 #if 0
1975 u_int32_t misc;
1976
1977 misc = pci_conf_read(pc, pa->pa_tag, BS_RTY_TOUT);
1978 misc = (misc & ~(UBS_PCI_RTY_MASK << UBS_PCI_RTY_SHIFT))
1979 | ((UBS_DEF_RTY & 0xff) << UBS_PCI_RTY_SHIFT);
1980 misc = (misc & ~(UBS_PCI_TOUT_MASK << UBS_PCI_TOUT_SHIFT))
1981 | ((UBS_DEF_TOUT & 0xff) << UBS_PCI_TOUT_SHIFT);
1982 pci_conf_write(pc, pa->pa_tag, BS_RTY_TOUT, misc);
1983 #endif
1984
1985 /*
1986 * This will set the cache line size to 1, this will
1987 * force the BCM58xx chip just to do burst read/writes.
1988 * Cache line read/writes are to slow
1989 */
1990 pci_write_config(dev, PCIR_CACHELNSZ, UBS_DEF_CACHELINE, 1);
1991 }
1992
1993 /*
1994 * Clean up after a chip crash.
1995 * It is assumed that the caller in splimp()
1996 */
1997 static void
1998 ubsec_cleanchip(struct ubsec_softc *sc)
1999 {
2000 struct ubsec_q *q;
2001
2002 while (!SIMPLEQ_EMPTY(&sc->sc_qchip)) {
2003 q = SIMPLEQ_FIRST(&sc->sc_qchip);
2004 SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q_next);
2005 ubsec_free_q(sc, q);
2006 }
2007 sc->sc_nqchip = 0;
2008 }
2009
2010 /*
2011 * free a ubsec_q
2012 * It is assumed that the caller is within splimp().
2013 */
2014 static int
2015 ubsec_free_q(struct ubsec_softc *sc, struct ubsec_q *q)
2016 {
2017 struct ubsec_q *q2;
2018 struct cryptop *crp;
2019 int npkts;
2020 int i;
2021
2022 npkts = q->q_nstacked_mcrs;
2023
2024 for (i = 0; i < npkts; i++) {
2025 if(q->q_stacked_mcr[i]) {
2026 q2 = q->q_stacked_mcr[i];
2027
2028 if ((q2->q_dst_m != NULL) && (q2->q_src_m != q2->q_dst_m))
2029 m_freem(q2->q_dst_m);
2030
2031 crp = (struct cryptop *)q2->q_crp;
2032
2033 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q2, q_next);
2034
2035 crp->crp_etype = EFAULT;
2036 crypto_done(crp);
2037 } else {
2038 break;
2039 }
2040 }
2041
2042 /*
2043 * Free header MCR
2044 */
2045 if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m))
2046 m_freem(q->q_dst_m);
2047
2048 crp = (struct cryptop *)q->q_crp;
2049
2050 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
2051
2052 crp->crp_etype = EFAULT;
2053 crypto_done(crp);
2054 return(0);
2055 }
2056
2057 /*
2058 * Routine to reset the chip and clean up.
2059 * It is assumed that the caller is in splimp()
2060 */
2061 static void
2062 ubsec_totalreset(struct ubsec_softc *sc)
2063 {
2064 ubsec_reset_board(sc);
2065 ubsec_init_board(sc);
2066 ubsec_cleanchip(sc);
2067 }
2068
2069 static int
2070 ubsec_dmamap_aligned(struct ubsec_operand *op)
2071 {
2072 int i;
2073
2074 for (i = 0; i < op->nsegs; i++) {
2075 if (op->segs[i].ds_addr & 3)
2076 return (0);
2077 if ((i != (op->nsegs - 1)) &&
2078 (op->segs[i].ds_len & 3))
2079 return (0);
2080 }
2081 return (1);
2082 }
2083
2084 static void
2085 ubsec_kfree(struct ubsec_softc *sc, struct ubsec_q2 *q)
2086 {
2087 switch (q->q_type) {
2088 case UBS_CTXOP_MODEXP: {
2089 struct ubsec_q2_modexp *me = (struct ubsec_q2_modexp *)q;
2090
2091 ubsec_dma_free(sc, &me->me_q.q_mcr);
2092 ubsec_dma_free(sc, &me->me_q.q_ctx);
2093 ubsec_dma_free(sc, &me->me_M);
2094 ubsec_dma_free(sc, &me->me_E);
2095 ubsec_dma_free(sc, &me->me_C);
2096 ubsec_dma_free(sc, &me->me_epb);
2097 free(me, M_DEVBUF);
2098 break;
2099 }
2100 case UBS_CTXOP_RSAPRIV: {
2101 struct ubsec_q2_rsapriv *rp = (struct ubsec_q2_rsapriv *)q;
2102
2103 ubsec_dma_free(sc, &rp->rpr_q.q_mcr);
2104 ubsec_dma_free(sc, &rp->rpr_q.q_ctx);
2105 ubsec_dma_free(sc, &rp->rpr_msgin);
2106 ubsec_dma_free(sc, &rp->rpr_msgout);
2107 free(rp, M_DEVBUF);
2108 break;
2109 }
2110 default:
2111 device_printf(sc->sc_dev, "invalid kfree 0x%x\n", q->q_type);
2112 break;
2113 }
2114 }
2115
2116 static int
2117 ubsec_kprocess(device_t dev, struct cryptkop *krp, int hint)
2118 {
2119 struct ubsec_softc *sc = device_get_softc(dev);
2120 int r;
2121
2122 if (krp == NULL || krp->krp_callback == NULL)
2123 return (EINVAL);
2124
2125 while (!SIMPLEQ_EMPTY(&sc->sc_q2free)) {
2126 struct ubsec_q2 *q;
2127
2128 q = SIMPLEQ_FIRST(&sc->sc_q2free);
2129 SIMPLEQ_REMOVE_HEAD(&sc->sc_q2free, q_next);
2130 ubsec_kfree(sc, q);
2131 }
2132
2133 switch (krp->krp_op) {
2134 case CRK_MOD_EXP:
2135 if (sc->sc_flags & UBS_FLAGS_HWNORM)
2136 r = ubsec_kprocess_modexp_hw(sc, krp, hint);
2137 else
2138 r = ubsec_kprocess_modexp_sw(sc, krp, hint);
2139 break;
2140 case CRK_MOD_EXP_CRT:
2141 return (ubsec_kprocess_rsapriv(sc, krp, hint));
2142 default:
2143 device_printf(sc->sc_dev, "kprocess: invalid op 0x%x\n",
2144 krp->krp_op);
2145 krp->krp_status = EOPNOTSUPP;
2146 crypto_kdone(krp);
2147 return (0);
2148 }
2149 return (0); /* silence compiler */
2150 }
2151
2152 /*
2153 * Start computation of cr[C] = (cr[M] ^ cr[E]) mod cr[N] (sw normalization)
2154 */
2155 static int
2156 ubsec_kprocess_modexp_sw(struct ubsec_softc *sc, struct cryptkop *krp, int hint)
2157 {
2158 struct ubsec_q2_modexp *me;
2159 struct ubsec_mcr *mcr;
2160 struct ubsec_ctx_modexp *ctx;
2161 struct ubsec_pktbuf *epb;
2162 int err = 0;
2163 u_int nbits, normbits, mbits, shiftbits, ebits;
2164
2165 me = (struct ubsec_q2_modexp *)malloc(sizeof *me, M_DEVBUF, M_NOWAIT);
2166 if (me == NULL) {
2167 err = ENOMEM;
2168 goto errout;
2169 }
2170 bzero(me, sizeof *me);
2171 me->me_krp = krp;
2172 me->me_q.q_type = UBS_CTXOP_MODEXP;
2173
2174 nbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_N]);
2175 if (nbits <= 512)
2176 normbits = 512;
2177 else if (nbits <= 768)
2178 normbits = 768;
2179 else if (nbits <= 1024)
2180 normbits = 1024;
2181 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 1536)
2182 normbits = 1536;
2183 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 2048)
2184 normbits = 2048;
2185 else {
2186 err = E2BIG;
2187 goto errout;
2188 }
2189
2190 shiftbits = normbits - nbits;
2191
2192 me->me_modbits = nbits;
2193 me->me_shiftbits = shiftbits;
2194 me->me_normbits = normbits;
2195
2196 /* Sanity check: result bits must be >= true modulus bits. */
2197 if (krp->krp_param[krp->krp_iparams].crp_nbits < nbits) {
2198 err = ERANGE;
2199 goto errout;
2200 }
2201
2202 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr),
2203 &me->me_q.q_mcr, 0)) {
2204 err = ENOMEM;
2205 goto errout;
2206 }
2207 mcr = (struct ubsec_mcr *)me->me_q.q_mcr.dma_vaddr;
2208
2209 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_modexp),
2210 &me->me_q.q_ctx, 0)) {
2211 err = ENOMEM;
2212 goto errout;
2213 }
2214
2215 mbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_M]);
2216 if (mbits > nbits) {
2217 err = E2BIG;
2218 goto errout;
2219 }
2220 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_M, 0)) {
2221 err = ENOMEM;
2222 goto errout;
2223 }
2224 ubsec_kshift_r(shiftbits,
2225 krp->krp_param[UBS_MODEXP_PAR_M].crp_p, mbits,
2226 me->me_M.dma_vaddr, normbits);
2227
2228 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_C, 0)) {
2229 err = ENOMEM;
2230 goto errout;
2231 }
2232 bzero(me->me_C.dma_vaddr, me->me_C.dma_size);
2233
2234 ebits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_E]);
2235 if (ebits > nbits) {
2236 err = E2BIG;
2237 goto errout;
2238 }
2239 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_E, 0)) {
2240 err = ENOMEM;
2241 goto errout;
2242 }
2243 ubsec_kshift_r(shiftbits,
2244 krp->krp_param[UBS_MODEXP_PAR_E].crp_p, ebits,
2245 me->me_E.dma_vaddr, normbits);
2246
2247 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_pktbuf),
2248 &me->me_epb, 0)) {
2249 err = ENOMEM;
2250 goto errout;
2251 }
2252 epb = (struct ubsec_pktbuf *)me->me_epb.dma_vaddr;
2253 epb->pb_addr = htole32(me->me_E.dma_paddr);
2254 epb->pb_next = 0;
2255 epb->pb_len = htole32(normbits / 8);
2256
2257 #ifdef UBSEC_DEBUG
2258 if (ubsec_debug) {
2259 printf("Epb ");
2260 ubsec_dump_pb(epb);
2261 }
2262 #endif
2263
2264 mcr->mcr_pkts = htole16(1);
2265 mcr->mcr_flags = 0;
2266 mcr->mcr_cmdctxp = htole32(me->me_q.q_ctx.dma_paddr);
2267 mcr->mcr_reserved = 0;
2268 mcr->mcr_pktlen = 0;
2269
2270 mcr->mcr_ipktbuf.pb_addr = htole32(me->me_M.dma_paddr);
2271 mcr->mcr_ipktbuf.pb_len = htole32(normbits / 8);
2272 mcr->mcr_ipktbuf.pb_next = htole32(me->me_epb.dma_paddr);
2273
2274 mcr->mcr_opktbuf.pb_addr = htole32(me->me_C.dma_paddr);
2275 mcr->mcr_opktbuf.pb_next = 0;
2276 mcr->mcr_opktbuf.pb_len = htole32(normbits / 8);
2277
2278 #ifdef DIAGNOSTIC
2279 /* Misaligned output buffer will hang the chip. */
2280 if ((letoh32(mcr->mcr_opktbuf.pb_addr) & 3) != 0)
2281 panic("%s: modexp invalid addr 0x%x\n",
2282 device_get_nameunit(sc->sc_dev),
2283 letoh32(mcr->mcr_opktbuf.pb_addr));
2284 if ((letoh32(mcr->mcr_opktbuf.pb_len) & 3) != 0)
2285 panic("%s: modexp invalid len 0x%x\n",
2286 device_get_nameunit(sc->sc_dev),
2287 letoh32(mcr->mcr_opktbuf.pb_len));
2288 #endif
2289
2290 ctx = (struct ubsec_ctx_modexp *)me->me_q.q_ctx.dma_vaddr;
2291 bzero(ctx, sizeof(*ctx));
2292 ubsec_kshift_r(shiftbits,
2293 krp->krp_param[UBS_MODEXP_PAR_N].crp_p, nbits,
2294 ctx->me_N, normbits);
2295 ctx->me_len = htole16((normbits / 8) + (4 * sizeof(u_int16_t)));
2296 ctx->me_op = htole16(UBS_CTXOP_MODEXP);
2297 ctx->me_E_len = htole16(nbits);
2298 ctx->me_N_len = htole16(nbits);
2299
2300 #ifdef UBSEC_DEBUG
2301 if (ubsec_debug) {
2302 ubsec_dump_mcr(mcr);
2303 ubsec_dump_ctx2((struct ubsec_ctx_keyop *)ctx);
2304 }
2305 #endif
2306
2307 /*
2308 * ubsec_feed2 will sync mcr and ctx, we just need to sync
2309 * everything else.
2310 */
2311 ubsec_dma_sync(&me->me_M, BUS_DMASYNC_PREWRITE);
2312 ubsec_dma_sync(&me->me_E, BUS_DMASYNC_PREWRITE);
2313 ubsec_dma_sync(&me->me_C, BUS_DMASYNC_PREREAD);
2314 ubsec_dma_sync(&me->me_epb, BUS_DMASYNC_PREWRITE);
2315
2316 /* Enqueue and we're done... */
2317 mtx_lock(&sc->sc_mcr2lock);
2318 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &me->me_q, q_next);
2319 ubsec_feed2(sc);
2320 ubsecstats.hst_modexp++;
2321 mtx_unlock(&sc->sc_mcr2lock);
2322
2323 return (0);
2324
2325 errout:
2326 if (me != NULL) {
2327 if (me->me_q.q_mcr.dma_map != NULL)
2328 ubsec_dma_free(sc, &me->me_q.q_mcr);
2329 if (me->me_q.q_ctx.dma_map != NULL) {
2330 bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size);
2331 ubsec_dma_free(sc, &me->me_q.q_ctx);
2332 }
2333 if (me->me_M.dma_map != NULL) {
2334 bzero(me->me_M.dma_vaddr, me->me_M.dma_size);
2335 ubsec_dma_free(sc, &me->me_M);
2336 }
2337 if (me->me_E.dma_map != NULL) {
2338 bzero(me->me_E.dma_vaddr, me->me_E.dma_size);
2339 ubsec_dma_free(sc, &me->me_E);
2340 }
2341 if (me->me_C.dma_map != NULL) {
2342 bzero(me->me_C.dma_vaddr, me->me_C.dma_size);
2343 ubsec_dma_free(sc, &me->me_C);
2344 }
2345 if (me->me_epb.dma_map != NULL)
2346 ubsec_dma_free(sc, &me->me_epb);
2347 free(me, M_DEVBUF);
2348 }
2349 krp->krp_status = err;
2350 crypto_kdone(krp);
2351 return (0);
2352 }
2353
2354 /*
2355 * Start computation of cr[C] = (cr[M] ^ cr[E]) mod cr[N] (hw normalization)
2356 */
2357 static int
2358 ubsec_kprocess_modexp_hw(struct ubsec_softc *sc, struct cryptkop *krp, int hint)
2359 {
2360 struct ubsec_q2_modexp *me;
2361 struct ubsec_mcr *mcr;
2362 struct ubsec_ctx_modexp *ctx;
2363 struct ubsec_pktbuf *epb;
2364 int err = 0;
2365 u_int nbits, normbits, mbits, shiftbits, ebits;
2366
2367 me = (struct ubsec_q2_modexp *)malloc(sizeof *me, M_DEVBUF, M_NOWAIT);
2368 if (me == NULL) {
2369 err = ENOMEM;
2370 goto errout;
2371 }
2372 bzero(me, sizeof *me);
2373 me->me_krp = krp;
2374 me->me_q.q_type = UBS_CTXOP_MODEXP;
2375
2376 nbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_N]);
2377 if (nbits <= 512)
2378 normbits = 512;
2379 else if (nbits <= 768)
2380 normbits = 768;
2381 else if (nbits <= 1024)
2382 normbits = 1024;
2383 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 1536)
2384 normbits = 1536;
2385 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 2048)
2386 normbits = 2048;
2387 else {
2388 err = E2BIG;
2389 goto errout;
2390 }
2391
2392 shiftbits = normbits - nbits;
2393
2394 /* XXX ??? */
2395 me->me_modbits = nbits;
2396 me->me_shiftbits = shiftbits;
2397 me->me_normbits = normbits;
2398
2399 /* Sanity check: result bits must be >= true modulus bits. */
2400 if (krp->krp_param[krp->krp_iparams].crp_nbits < nbits) {
2401 err = ERANGE;
2402 goto errout;
2403 }
2404
2405 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr),
2406 &me->me_q.q_mcr, 0)) {
2407 err = ENOMEM;
2408 goto errout;
2409 }
2410 mcr = (struct ubsec_mcr *)me->me_q.q_mcr.dma_vaddr;
2411
2412 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_modexp),
2413 &me->me_q.q_ctx, 0)) {
2414 err = ENOMEM;
2415 goto errout;
2416 }
2417
2418 mbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_M]);
2419 if (mbits > nbits) {
2420 err = E2BIG;
2421 goto errout;
2422 }
2423 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_M, 0)) {
2424 err = ENOMEM;
2425 goto errout;
2426 }
2427 bzero(me->me_M.dma_vaddr, normbits / 8);
2428 bcopy(krp->krp_param[UBS_MODEXP_PAR_M].crp_p,
2429 me->me_M.dma_vaddr, (mbits + 7) / 8);
2430
2431 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_C, 0)) {
2432 err = ENOMEM;
2433 goto errout;
2434 }
2435 bzero(me->me_C.dma_vaddr, me->me_C.dma_size);
2436
2437 ebits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_E]);
2438 if (ebits > nbits) {
2439 err = E2BIG;
2440 goto errout;
2441 }
2442 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_E, 0)) {
2443 err = ENOMEM;
2444 goto errout;
2445 }
2446 bzero(me->me_E.dma_vaddr, normbits / 8);
2447 bcopy(krp->krp_param[UBS_MODEXP_PAR_E].crp_p,
2448 me->me_E.dma_vaddr, (ebits + 7) / 8);
2449
2450 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_pktbuf),
2451 &me->me_epb, 0)) {
2452 err = ENOMEM;
2453 goto errout;
2454 }
2455 epb = (struct ubsec_pktbuf *)me->me_epb.dma_vaddr;
2456 epb->pb_addr = htole32(me->me_E.dma_paddr);
2457 epb->pb_next = 0;
2458 epb->pb_len = htole32((ebits + 7) / 8);
2459
2460 #ifdef UBSEC_DEBUG
2461 if (ubsec_debug) {
2462 printf("Epb ");
2463 ubsec_dump_pb(epb);
2464 }
2465 #endif
2466
2467 mcr->mcr_pkts = htole16(1);
2468 mcr->mcr_flags = 0;
2469 mcr->mcr_cmdctxp = htole32(me->me_q.q_ctx.dma_paddr);
2470 mcr->mcr_reserved = 0;
2471 mcr->mcr_pktlen = 0;
2472
2473 mcr->mcr_ipktbuf.pb_addr = htole32(me->me_M.dma_paddr);
2474 mcr->mcr_ipktbuf.pb_len = htole32(normbits / 8);
2475 mcr->mcr_ipktbuf.pb_next = htole32(me->me_epb.dma_paddr);
2476
2477 mcr->mcr_opktbuf.pb_addr = htole32(me->me_C.dma_paddr);
2478 mcr->mcr_opktbuf.pb_next = 0;
2479 mcr->mcr_opktbuf.pb_len = htole32(normbits / 8);
2480
2481 #ifdef DIAGNOSTIC
2482 /* Misaligned output buffer will hang the chip. */
2483 if ((letoh32(mcr->mcr_opktbuf.pb_addr) & 3) != 0)
2484 panic("%s: modexp invalid addr 0x%x\n",
2485 device_get_nameunit(sc->sc_dev),
2486 letoh32(mcr->mcr_opktbuf.pb_addr));
2487 if ((letoh32(mcr->mcr_opktbuf.pb_len) & 3) != 0)
2488 panic("%s: modexp invalid len 0x%x\n",
2489 device_get_nameunit(sc->sc_dev),
2490 letoh32(mcr->mcr_opktbuf.pb_len));
2491 #endif
2492
2493 ctx = (struct ubsec_ctx_modexp *)me->me_q.q_ctx.dma_vaddr;
2494 bzero(ctx, sizeof(*ctx));
2495 bcopy(krp->krp_param[UBS_MODEXP_PAR_N].crp_p, ctx->me_N,
2496 (nbits + 7) / 8);
2497 ctx->me_len = htole16((normbits / 8) + (4 * sizeof(u_int16_t)));
2498 ctx->me_op = htole16(UBS_CTXOP_MODEXP);
2499 ctx->me_E_len = htole16(ebits);
2500 ctx->me_N_len = htole16(nbits);
2501
2502 #ifdef UBSEC_DEBUG
2503 if (ubsec_debug) {
2504 ubsec_dump_mcr(mcr);
2505 ubsec_dump_ctx2((struct ubsec_ctx_keyop *)ctx);
2506 }
2507 #endif
2508
2509 /*
2510 * ubsec_feed2 will sync mcr and ctx, we just need to sync
2511 * everything else.
2512 */
2513 ubsec_dma_sync(&me->me_M, BUS_DMASYNC_PREWRITE);
2514 ubsec_dma_sync(&me->me_E, BUS_DMASYNC_PREWRITE);
2515 ubsec_dma_sync(&me->me_C, BUS_DMASYNC_PREREAD);
2516 ubsec_dma_sync(&me->me_epb, BUS_DMASYNC_PREWRITE);
2517
2518 /* Enqueue and we're done... */
2519 mtx_lock(&sc->sc_mcr2lock);
2520 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &me->me_q, q_next);
2521 ubsec_feed2(sc);
2522 mtx_unlock(&sc->sc_mcr2lock);
2523
2524 return (0);
2525
2526 errout:
2527 if (me != NULL) {
2528 if (me->me_q.q_mcr.dma_map != NULL)
2529 ubsec_dma_free(sc, &me->me_q.q_mcr);
2530 if (me->me_q.q_ctx.dma_map != NULL) {
2531 bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size);
2532 ubsec_dma_free(sc, &me->me_q.q_ctx);
2533 }
2534 if (me->me_M.dma_map != NULL) {
2535 bzero(me->me_M.dma_vaddr, me->me_M.dma_size);
2536 ubsec_dma_free(sc, &me->me_M);
2537 }
2538 if (me->me_E.dma_map != NULL) {
2539 bzero(me->me_E.dma_vaddr, me->me_E.dma_size);
2540 ubsec_dma_free(sc, &me->me_E);
2541 }
2542 if (me->me_C.dma_map != NULL) {
2543 bzero(me->me_C.dma_vaddr, me->me_C.dma_size);
2544 ubsec_dma_free(sc, &me->me_C);
2545 }
2546 if (me->me_epb.dma_map != NULL)
2547 ubsec_dma_free(sc, &me->me_epb);
2548 free(me, M_DEVBUF);
2549 }
2550 krp->krp_status = err;
2551 crypto_kdone(krp);
2552 return (0);
2553 }
2554
2555 static int
2556 ubsec_kprocess_rsapriv(struct ubsec_softc *sc, struct cryptkop *krp, int hint)
2557 {
2558 struct ubsec_q2_rsapriv *rp = NULL;
2559 struct ubsec_mcr *mcr;
2560 struct ubsec_ctx_rsapriv *ctx;
2561 int err = 0;
2562 u_int padlen, msglen;
2563
2564 msglen = ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_P]);
2565 padlen = ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_Q]);
2566 if (msglen > padlen)
2567 padlen = msglen;
2568
2569 if (padlen <= 256)
2570 padlen = 256;
2571 else if (padlen <= 384)
2572 padlen = 384;
2573 else if (padlen <= 512)
2574 padlen = 512;
2575 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && padlen <= 768)
2576 padlen = 768;
2577 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && padlen <= 1024)
2578 padlen = 1024;
2579 else {
2580 err = E2BIG;
2581 goto errout;
2582 }
2583
2584 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_DP]) > padlen) {
2585 err = E2BIG;
2586 goto errout;
2587 }
2588
2589 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_DQ]) > padlen) {
2590 err = E2BIG;
2591 goto errout;
2592 }
2593
2594 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_PINV]) > padlen) {
2595 err = E2BIG;
2596 goto errout;
2597 }
2598
2599 rp = (struct ubsec_q2_rsapriv *)malloc(sizeof *rp, M_DEVBUF, M_NOWAIT);
2600 if (rp == NULL)
2601 return (ENOMEM);
2602 bzero(rp, sizeof *rp);
2603 rp->rpr_krp = krp;
2604 rp->rpr_q.q_type = UBS_CTXOP_RSAPRIV;
2605
2606 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr),
2607 &rp->rpr_q.q_mcr, 0)) {
2608 err = ENOMEM;
2609 goto errout;
2610 }
2611 mcr = (struct ubsec_mcr *)rp->rpr_q.q_mcr.dma_vaddr;
2612
2613 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_rsapriv),
2614 &rp->rpr_q.q_ctx, 0)) {
2615 err = ENOMEM;
2616 goto errout;
2617 }
2618 ctx = (struct ubsec_ctx_rsapriv *)rp->rpr_q.q_ctx.dma_vaddr;
2619 bzero(ctx, sizeof *ctx);
2620
2621 /* Copy in p */
2622 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_P].crp_p,
2623 &ctx->rpr_buf[0 * (padlen / 8)],
2624 (krp->krp_param[UBS_RSAPRIV_PAR_P].crp_nbits + 7) / 8);
2625
2626 /* Copy in q */
2627 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_Q].crp_p,
2628 &ctx->rpr_buf[1 * (padlen / 8)],
2629 (krp->krp_param[UBS_RSAPRIV_PAR_Q].crp_nbits + 7) / 8);
2630
2631 /* Copy in dp */
2632 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_DP].crp_p,
2633 &ctx->rpr_buf[2 * (padlen / 8)],
2634 (krp->krp_param[UBS_RSAPRIV_PAR_DP].crp_nbits + 7) / 8);
2635
2636 /* Copy in dq */
2637 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_DQ].crp_p,
2638 &ctx->rpr_buf[3 * (padlen / 8)],
2639 (krp->krp_param[UBS_RSAPRIV_PAR_DQ].crp_nbits + 7) / 8);
2640
2641 /* Copy in pinv */
2642 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_PINV].crp_p,
2643 &ctx->rpr_buf[4 * (padlen / 8)],
2644 (krp->krp_param[UBS_RSAPRIV_PAR_PINV].crp_nbits + 7) / 8);
2645
2646 msglen = padlen * 2;
2647
2648 /* Copy in input message (aligned buffer/length). */
2649 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_MSGIN]) > msglen) {
2650 /* Is this likely? */
2651 err = E2BIG;
2652 goto errout;
2653 }
2654 if (ubsec_dma_malloc(sc, (msglen + 7) / 8, &rp->rpr_msgin, 0)) {
2655 err = ENOMEM;
2656 goto errout;
2657 }
2658 bzero(rp->rpr_msgin.dma_vaddr, (msglen + 7) / 8);
2659 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_MSGIN].crp_p,
2660 rp->rpr_msgin.dma_vaddr,
2661 (krp->krp_param[UBS_RSAPRIV_PAR_MSGIN].crp_nbits + 7) / 8);
2662
2663 /* Prepare space for output message (aligned buffer/length). */
2664 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT]) < msglen) {
2665 /* Is this likely? */
2666 err = E2BIG;
2667 goto errout;
2668 }
2669 if (ubsec_dma_malloc(sc, (msglen + 7) / 8, &rp->rpr_msgout, 0)) {
2670 err = ENOMEM;
2671 goto errout;
2672 }
2673 bzero(rp->rpr_msgout.dma_vaddr, (msglen + 7) / 8);
2674
2675 mcr->mcr_pkts = htole16(1);
2676 mcr->mcr_flags = 0;
2677 mcr->mcr_cmdctxp = htole32(rp->rpr_q.q_ctx.dma_paddr);
2678 mcr->mcr_ipktbuf.pb_addr = htole32(rp->rpr_msgin.dma_paddr);
2679 mcr->mcr_ipktbuf.pb_next = 0;
2680 mcr->mcr_ipktbuf.pb_len = htole32(rp->rpr_msgin.dma_size);
2681 mcr->mcr_reserved = 0;
2682 mcr->mcr_pktlen = htole16(msglen);
2683 mcr->mcr_opktbuf.pb_addr = htole32(rp->rpr_msgout.dma_paddr);
2684 mcr->mcr_opktbuf.pb_next = 0;
2685 mcr->mcr_opktbuf.pb_len = htole32(rp->rpr_msgout.dma_size);
2686
2687 #ifdef DIAGNOSTIC
2688 if (rp->rpr_msgin.dma_paddr & 3 || rp->rpr_msgin.dma_size & 3) {
2689 panic("%s: rsapriv: invalid msgin %x(0x%jx)",
2690 device_get_nameunit(sc->sc_dev),
2691 rp->rpr_msgin.dma_paddr, (uintmax_t)rp->rpr_msgin.dma_size);
2692 }
2693 if (rp->rpr_msgout.dma_paddr & 3 || rp->rpr_msgout.dma_size & 3) {
2694 panic("%s: rsapriv: invalid msgout %x(0x%jx)",
2695 device_get_nameunit(sc->sc_dev),
2696 rp->rpr_msgout.dma_paddr, (uintmax_t)rp->rpr_msgout.dma_size);
2697 }
2698 #endif
2699
2700 ctx->rpr_len = (sizeof(u_int16_t) * 4) + (5 * (padlen / 8));
2701 ctx->rpr_op = htole16(UBS_CTXOP_RSAPRIV);
2702 ctx->rpr_q_len = htole16(padlen);
2703 ctx->rpr_p_len = htole16(padlen);
2704
2705 /*
2706 * ubsec_feed2 will sync mcr and ctx, we just need to sync
2707 * everything else.
2708 */
2709 ubsec_dma_sync(&rp->rpr_msgin, BUS_DMASYNC_PREWRITE);
2710 ubsec_dma_sync(&rp->rpr_msgout, BUS_DMASYNC_PREREAD);
2711
2712 /* Enqueue and we're done... */
2713 mtx_lock(&sc->sc_mcr2lock);
2714 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &rp->rpr_q, q_next);
2715 ubsec_feed2(sc);
2716 ubsecstats.hst_modexpcrt++;
2717 mtx_unlock(&sc->sc_mcr2lock);
2718 return (0);
2719
2720 errout:
2721 if (rp != NULL) {
2722 if (rp->rpr_q.q_mcr.dma_map != NULL)
2723 ubsec_dma_free(sc, &rp->rpr_q.q_mcr);
2724 if (rp->rpr_msgin.dma_map != NULL) {
2725 bzero(rp->rpr_msgin.dma_vaddr, rp->rpr_msgin.dma_size);
2726 ubsec_dma_free(sc, &rp->rpr_msgin);
2727 }
2728 if (rp->rpr_msgout.dma_map != NULL) {
2729 bzero(rp->rpr_msgout.dma_vaddr, rp->rpr_msgout.dma_size);
2730 ubsec_dma_free(sc, &rp->rpr_msgout);
2731 }
2732 free(rp, M_DEVBUF);
2733 }
2734 krp->krp_status = err;
2735 crypto_kdone(krp);
2736 return (0);
2737 }
2738
2739 #ifdef UBSEC_DEBUG
2740 static void
2741 ubsec_dump_pb(volatile struct ubsec_pktbuf *pb)
2742 {
2743 printf("addr 0x%x (0x%x) next 0x%x\n",
2744 pb->pb_addr, pb->pb_len, pb->pb_next);
2745 }
2746
2747 static void
2748 ubsec_dump_ctx2(struct ubsec_ctx_keyop *c)
2749 {
2750 printf("CTX (0x%x):\n", c->ctx_len);
2751 switch (letoh16(c->ctx_op)) {
2752 case UBS_CTXOP_RNGBYPASS:
2753 case UBS_CTXOP_RNGSHA1:
2754 break;
2755 case UBS_CTXOP_MODEXP:
2756 {
2757 struct ubsec_ctx_modexp *cx = (void *)c;
2758 int i, len;
2759
2760 printf(" Elen %u, Nlen %u\n",
2761 letoh16(cx->me_E_len), letoh16(cx->me_N_len));
2762 len = (cx->me_N_len + 7)/8;
2763 for (i = 0; i < len; i++)
2764 printf("%s%02x", (i == 0) ? " N: " : ":", cx->me_N[i]);
2765 printf("\n");
2766 break;
2767 }
2768 default:
2769 printf("unknown context: %x\n", c->ctx_op);
2770 }
2771 printf("END CTX\n");
2772 }
2773
2774 static void
2775 ubsec_dump_mcr(struct ubsec_mcr *mcr)
2776 {
2777 volatile struct ubsec_mcr_add *ma;
2778 int i;
2779
2780 printf("MCR:\n");
2781 printf(" pkts: %u, flags 0x%x\n",
2782 letoh16(mcr->mcr_pkts), letoh16(mcr->mcr_flags));
2783 ma = (volatile struct ubsec_mcr_add *)&mcr->mcr_cmdctxp;
2784 for (i = 0; i < letoh16(mcr->mcr_pkts); i++) {
2785 printf(" %d: ctx 0x%x len 0x%x rsvd 0x%x\n", i,
2786 letoh32(ma->mcr_cmdctxp), letoh16(ma->mcr_pktlen),
2787 letoh16(ma->mcr_reserved));
2788 printf(" %d: ipkt ", i);
2789 ubsec_dump_pb(&ma->mcr_ipktbuf);
2790 printf(" %d: opkt ", i);
2791 ubsec_dump_pb(&ma->mcr_opktbuf);
2792 ma++;
2793 }
2794 printf("END MCR\n");
2795 }
2796 #endif /* UBSEC_DEBUG */
2797
2798 /*
2799 * Return the number of significant bits of a big number.
2800 */
2801 static int
2802 ubsec_ksigbits(struct crparam *cr)
2803 {
2804 u_int plen = (cr->crp_nbits + 7) / 8;
2805 int i, sig = plen * 8;
2806 u_int8_t c, *p = cr->crp_p;
2807
2808 for (i = plen - 1; i >= 0; i--) {
2809 c = p[i];
2810 if (c != 0) {
2811 while ((c & 0x80) == 0) {
2812 sig--;
2813 c <<= 1;
2814 }
2815 break;
2816 }
2817 sig -= 8;
2818 }
2819 return (sig);
2820 }
2821
2822 static void
2823 ubsec_kshift_r(
2824 u_int shiftbits,
2825 u_int8_t *src, u_int srcbits,
2826 u_int8_t *dst, u_int dstbits)
2827 {
2828 u_int slen, dlen;
2829 int i, si, di, n;
2830
2831 slen = (srcbits + 7) / 8;
2832 dlen = (dstbits + 7) / 8;
2833
2834 for (i = 0; i < slen; i++)
2835 dst[i] = src[i];
2836 for (i = 0; i < dlen - slen; i++)
2837 dst[slen + i] = 0;
2838
2839 n = shiftbits / 8;
2840 if (n != 0) {
2841 si = dlen - n - 1;
2842 di = dlen - 1;
2843 while (si >= 0)
2844 dst[di--] = dst[si--];
2845 while (di >= 0)
2846 dst[di--] = 0;
2847 }
2848
2849 n = shiftbits % 8;
2850 if (n != 0) {
2851 for (i = dlen - 1; i > 0; i--)
2852 dst[i] = (dst[i] << n) |
2853 (dst[i - 1] >> (8 - n));
2854 dst[0] = dst[0] << n;
2855 }
2856 }
2857
2858 static void
2859 ubsec_kshift_l(
2860 u_int shiftbits,
2861 u_int8_t *src, u_int srcbits,
2862 u_int8_t *dst, u_int dstbits)
2863 {
2864 int slen, dlen, i, n;
2865
2866 slen = (srcbits + 7) / 8;
2867 dlen = (dstbits + 7) / 8;
2868
2869 n = shiftbits / 8;
2870 for (i = 0; i < slen; i++)
2871 dst[i] = src[i + n];
2872 for (i = 0; i < dlen - slen; i++)
2873 dst[slen + i] = 0;
2874
2875 n = shiftbits % 8;
2876 if (n != 0) {
2877 for (i = 0; i < (dlen - 1); i++)
2878 dst[i] = (dst[i] >> n) | (dst[i + 1] << (8 - n));
2879 dst[dlen - 1] = dst[dlen - 1] >> n;
2880 }
2881 }
Cache object: dab6a8ae1d2bf7eba8adb2eac7f83ac8
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