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: releng/8.0/sys/dev/ubsec/ubsec.c 194023 2009-06-11 17:14:28Z avg $");
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 int 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 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5825
225 ))
226 return (BUS_PROBE_DEFAULT);
227 return (ENXIO);
228 }
229
230 static const char*
231 ubsec_partname(struct ubsec_softc *sc)
232 {
233 /* XXX sprintf numbers when not decoded */
234 switch (pci_get_vendor(sc->sc_dev)) {
235 case PCI_VENDOR_BROADCOM:
236 switch (pci_get_device(sc->sc_dev)) {
237 case PCI_PRODUCT_BROADCOM_5801: return "Broadcom 5801";
238 case PCI_PRODUCT_BROADCOM_5802: return "Broadcom 5802";
239 case PCI_PRODUCT_BROADCOM_5805: return "Broadcom 5805";
240 case PCI_PRODUCT_BROADCOM_5820: return "Broadcom 5820";
241 case PCI_PRODUCT_BROADCOM_5821: return "Broadcom 5821";
242 case PCI_PRODUCT_BROADCOM_5822: return "Broadcom 5822";
243 case PCI_PRODUCT_BROADCOM_5823: return "Broadcom 5823";
244 case PCI_PRODUCT_BROADCOM_5825: return "Broadcom 5825";
245 }
246 return "Broadcom unknown-part";
247 case PCI_VENDOR_BLUESTEEL:
248 switch (pci_get_device(sc->sc_dev)) {
249 case PCI_PRODUCT_BLUESTEEL_5601: return "Bluesteel 5601";
250 }
251 return "Bluesteel unknown-part";
252 case PCI_VENDOR_SUN:
253 switch (pci_get_device(sc->sc_dev)) {
254 case PCI_PRODUCT_SUN_5821: return "Sun Crypto 5821";
255 case PCI_PRODUCT_SUN_SCA1K: return "Sun Crypto 1K";
256 }
257 return "Sun unknown-part";
258 }
259 return "Unknown-vendor unknown-part";
260 }
261
262 static void
263 default_harvest(struct rndtest_state *rsp, void *buf, u_int count)
264 {
265 random_harvest(buf, count, count*NBBY, 0, RANDOM_PURE);
266 }
267
268 static int
269 ubsec_attach(device_t dev)
270 {
271 struct ubsec_softc *sc = device_get_softc(dev);
272 struct ubsec_dma *dmap;
273 u_int32_t cmd, i;
274 int rid;
275
276 bzero(sc, sizeof (*sc));
277 sc->sc_dev = dev;
278
279 SIMPLEQ_INIT(&sc->sc_queue);
280 SIMPLEQ_INIT(&sc->sc_qchip);
281 SIMPLEQ_INIT(&sc->sc_queue2);
282 SIMPLEQ_INIT(&sc->sc_qchip2);
283 SIMPLEQ_INIT(&sc->sc_q2free);
284
285 /* XXX handle power management */
286
287 sc->sc_statmask = BS_STAT_MCR1_DONE | BS_STAT_DMAERR;
288
289 if (pci_get_vendor(dev) == PCI_VENDOR_BLUESTEEL &&
290 pci_get_device(dev) == PCI_PRODUCT_BLUESTEEL_5601)
291 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG;
292
293 if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM &&
294 (pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5802 ||
295 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5805))
296 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG;
297
298 if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM &&
299 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5820)
300 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG |
301 UBS_FLAGS_LONGCTX | UBS_FLAGS_HWNORM | UBS_FLAGS_BIGKEY;
302
303 if ((pci_get_vendor(dev) == PCI_VENDOR_BROADCOM &&
304 (pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5821 ||
305 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5822 ||
306 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5823 ||
307 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5825)) ||
308 (pci_get_vendor(dev) == PCI_VENDOR_SUN &&
309 (pci_get_device(dev) == PCI_PRODUCT_SUN_SCA1K ||
310 pci_get_device(dev) == PCI_PRODUCT_SUN_5821))) {
311 /* NB: the 5821/5822 defines some additional status bits */
312 sc->sc_statmask |= BS_STAT_MCR1_ALLEMPTY |
313 BS_STAT_MCR2_ALLEMPTY;
314 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG |
315 UBS_FLAGS_LONGCTX | UBS_FLAGS_HWNORM | UBS_FLAGS_BIGKEY;
316 }
317
318 cmd = pci_read_config(dev, PCIR_COMMAND, 4);
319 cmd |= PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN;
320 pci_write_config(dev, PCIR_COMMAND, cmd, 4);
321 cmd = pci_read_config(dev, PCIR_COMMAND, 4);
322
323 if (!(cmd & PCIM_CMD_MEMEN)) {
324 device_printf(dev, "failed to enable memory mapping\n");
325 goto bad;
326 }
327
328 if (!(cmd & PCIM_CMD_BUSMASTEREN)) {
329 device_printf(dev, "failed to enable bus mastering\n");
330 goto bad;
331 }
332
333 /*
334 * Setup memory-mapping of PCI registers.
335 */
336 rid = BS_BAR;
337 sc->sc_sr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
338 RF_ACTIVE);
339 if (sc->sc_sr == NULL) {
340 device_printf(dev, "cannot map register space\n");
341 goto bad;
342 }
343 sc->sc_st = rman_get_bustag(sc->sc_sr);
344 sc->sc_sh = rman_get_bushandle(sc->sc_sr);
345
346 /*
347 * Arrange interrupt line.
348 */
349 rid = 0;
350 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
351 RF_SHAREABLE|RF_ACTIVE);
352 if (sc->sc_irq == NULL) {
353 device_printf(dev, "could not map interrupt\n");
354 goto bad1;
355 }
356 /*
357 * NB: Network code assumes we are blocked with splimp()
358 * so make sure the IRQ is mapped appropriately.
359 */
360 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_NET | INTR_MPSAFE,
361 NULL, ubsec_intr, sc, &sc->sc_ih)) {
362 device_printf(dev, "could not establish interrupt\n");
363 goto bad2;
364 }
365
366 sc->sc_cid = crypto_get_driverid(dev, CRYPTOCAP_F_HARDWARE);
367 if (sc->sc_cid < 0) {
368 device_printf(dev, "could not get crypto driver id\n");
369 goto bad3;
370 }
371
372 /*
373 * Setup DMA descriptor area.
374 */
375 if (bus_dma_tag_create(NULL, /* parent */
376 1, 0, /* alignment, bounds */
377 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
378 BUS_SPACE_MAXADDR, /* highaddr */
379 NULL, NULL, /* filter, filterarg */
380 0x3ffff, /* maxsize */
381 UBS_MAX_SCATTER, /* nsegments */
382 0xffff, /* maxsegsize */
383 BUS_DMA_ALLOCNOW, /* flags */
384 NULL, NULL, /* lockfunc, lockarg */
385 &sc->sc_dmat)) {
386 device_printf(dev, "cannot allocate DMA tag\n");
387 goto bad4;
388 }
389 SIMPLEQ_INIT(&sc->sc_freequeue);
390 dmap = sc->sc_dmaa;
391 for (i = 0; i < UBS_MAX_NQUEUE; i++, dmap++) {
392 struct ubsec_q *q;
393
394 q = (struct ubsec_q *)malloc(sizeof(struct ubsec_q),
395 M_DEVBUF, M_NOWAIT);
396 if (q == NULL) {
397 device_printf(dev, "cannot allocate queue buffers\n");
398 break;
399 }
400
401 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_dmachunk),
402 &dmap->d_alloc, 0)) {
403 device_printf(dev, "cannot allocate dma buffers\n");
404 free(q, M_DEVBUF);
405 break;
406 }
407 dmap->d_dma = (struct ubsec_dmachunk *)dmap->d_alloc.dma_vaddr;
408
409 q->q_dma = dmap;
410 sc->sc_queuea[i] = q;
411
412 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
413 }
414 mtx_init(&sc->sc_mcr1lock, device_get_nameunit(dev),
415 "mcr1 operations", MTX_DEF);
416 mtx_init(&sc->sc_freeqlock, device_get_nameunit(dev),
417 "mcr1 free q", MTX_DEF);
418
419 device_printf(sc->sc_dev, "%s\n", ubsec_partname(sc));
420
421 crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0);
422 crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0);
423 crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0);
424 crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0);
425
426 /*
427 * Reset Broadcom chip
428 */
429 ubsec_reset_board(sc);
430
431 /*
432 * Init Broadcom specific PCI settings
433 */
434 ubsec_init_pciregs(dev);
435
436 /*
437 * Init Broadcom chip
438 */
439 ubsec_init_board(sc);
440
441 #ifndef UBSEC_NO_RNG
442 if (sc->sc_flags & UBS_FLAGS_RNG) {
443 sc->sc_statmask |= BS_STAT_MCR2_DONE;
444 #ifdef UBSEC_RNDTEST
445 sc->sc_rndtest = rndtest_attach(dev);
446 if (sc->sc_rndtest)
447 sc->sc_harvest = rndtest_harvest;
448 else
449 sc->sc_harvest = default_harvest;
450 #else
451 sc->sc_harvest = default_harvest;
452 #endif
453
454 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr),
455 &sc->sc_rng.rng_q.q_mcr, 0))
456 goto skip_rng;
457
458 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_rngbypass),
459 &sc->sc_rng.rng_q.q_ctx, 0)) {
460 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_mcr);
461 goto skip_rng;
462 }
463
464 if (ubsec_dma_malloc(sc, sizeof(u_int32_t) *
465 UBSEC_RNG_BUFSIZ, &sc->sc_rng.rng_buf, 0)) {
466 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_ctx);
467 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_mcr);
468 goto skip_rng;
469 }
470
471 if (hz >= 100)
472 sc->sc_rnghz = hz / 100;
473 else
474 sc->sc_rnghz = 1;
475 callout_init(&sc->sc_rngto, CALLOUT_MPSAFE);
476 callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc);
477 skip_rng:
478 ;
479 }
480 #endif /* UBSEC_NO_RNG */
481 mtx_init(&sc->sc_mcr2lock, device_get_nameunit(dev),
482 "mcr2 operations", MTX_DEF);
483
484 if (sc->sc_flags & UBS_FLAGS_KEY) {
485 sc->sc_statmask |= BS_STAT_MCR2_DONE;
486
487 crypto_kregister(sc->sc_cid, CRK_MOD_EXP, 0);
488 #if 0
489 crypto_kregister(sc->sc_cid, CRK_MOD_EXP_CRT, 0);
490 #endif
491 }
492 return (0);
493 bad4:
494 crypto_unregister_all(sc->sc_cid);
495 bad3:
496 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
497 bad2:
498 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
499 bad1:
500 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_sr);
501 bad:
502 return (ENXIO);
503 }
504
505 /*
506 * Detach a device that successfully probed.
507 */
508 static int
509 ubsec_detach(device_t dev)
510 {
511 struct ubsec_softc *sc = device_get_softc(dev);
512
513 /* XXX wait/abort active ops */
514
515 /* disable interrupts */
516 WRITE_REG(sc, BS_CTRL, READ_REG(sc, BS_CTRL) &~
517 (BS_CTRL_MCR2INT | BS_CTRL_MCR1INT | BS_CTRL_DMAERR));
518
519 callout_stop(&sc->sc_rngto);
520
521 crypto_unregister_all(sc->sc_cid);
522
523 #ifdef UBSEC_RNDTEST
524 if (sc->sc_rndtest)
525 rndtest_detach(sc->sc_rndtest);
526 #endif
527
528 while (!SIMPLEQ_EMPTY(&sc->sc_freequeue)) {
529 struct ubsec_q *q;
530
531 q = SIMPLEQ_FIRST(&sc->sc_freequeue);
532 SIMPLEQ_REMOVE_HEAD(&sc->sc_freequeue, q_next);
533 ubsec_dma_free(sc, &q->q_dma->d_alloc);
534 free(q, M_DEVBUF);
535 }
536 mtx_destroy(&sc->sc_mcr1lock);
537 mtx_destroy(&sc->sc_freeqlock);
538 #ifndef UBSEC_NO_RNG
539 if (sc->sc_flags & UBS_FLAGS_RNG) {
540 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_mcr);
541 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_ctx);
542 ubsec_dma_free(sc, &sc->sc_rng.rng_buf);
543 }
544 #endif /* UBSEC_NO_RNG */
545 mtx_destroy(&sc->sc_mcr2lock);
546
547 bus_generic_detach(dev);
548 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
549 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
550
551 bus_dma_tag_destroy(sc->sc_dmat);
552 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_sr);
553
554 return (0);
555 }
556
557 /*
558 * Stop all chip i/o so that the kernel's probe routines don't
559 * get confused by errant DMAs when rebooting.
560 */
561 static int
562 ubsec_shutdown(device_t dev)
563 {
564 #ifdef notyet
565 ubsec_stop(device_get_softc(dev));
566 #endif
567 return (0);
568 }
569
570 /*
571 * Device suspend routine.
572 */
573 static int
574 ubsec_suspend(device_t dev)
575 {
576 struct ubsec_softc *sc = device_get_softc(dev);
577
578 #ifdef notyet
579 /* XXX stop the device and save PCI settings */
580 #endif
581 sc->sc_suspended = 1;
582
583 return (0);
584 }
585
586 static int
587 ubsec_resume(device_t dev)
588 {
589 struct ubsec_softc *sc = device_get_softc(dev);
590
591 #ifdef notyet
592 /* XXX retore PCI settings and start the device */
593 #endif
594 sc->sc_suspended = 0;
595 return (0);
596 }
597
598 /*
599 * UBSEC Interrupt routine
600 */
601 static void
602 ubsec_intr(void *arg)
603 {
604 struct ubsec_softc *sc = arg;
605 volatile u_int32_t stat;
606 struct ubsec_q *q;
607 struct ubsec_dma *dmap;
608 int npkts = 0, i;
609
610 stat = READ_REG(sc, BS_STAT);
611 stat &= sc->sc_statmask;
612 if (stat == 0)
613 return;
614
615 WRITE_REG(sc, BS_STAT, stat); /* IACK */
616
617 /*
618 * Check to see if we have any packets waiting for us
619 */
620 if ((stat & BS_STAT_MCR1_DONE)) {
621 mtx_lock(&sc->sc_mcr1lock);
622 while (!SIMPLEQ_EMPTY(&sc->sc_qchip)) {
623 q = SIMPLEQ_FIRST(&sc->sc_qchip);
624 dmap = q->q_dma;
625
626 if ((dmap->d_dma->d_mcr.mcr_flags & htole16(UBS_MCR_DONE)) == 0)
627 break;
628
629 SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q_next);
630
631 npkts = q->q_nstacked_mcrs;
632 sc->sc_nqchip -= 1+npkts;
633 /*
634 * search for further sc_qchip ubsec_q's that share
635 * the same MCR, and complete them too, they must be
636 * at the top.
637 */
638 for (i = 0; i < npkts; i++) {
639 if(q->q_stacked_mcr[i]) {
640 ubsec_callback(sc, q->q_stacked_mcr[i]);
641 } else {
642 break;
643 }
644 }
645 ubsec_callback(sc, q);
646 }
647 /*
648 * Don't send any more packet to chip if there has been
649 * a DMAERR.
650 */
651 if (!(stat & BS_STAT_DMAERR))
652 ubsec_feed(sc);
653 mtx_unlock(&sc->sc_mcr1lock);
654 }
655
656 /*
657 * Check to see if we have any key setups/rng's waiting for us
658 */
659 if ((sc->sc_flags & (UBS_FLAGS_KEY|UBS_FLAGS_RNG)) &&
660 (stat & BS_STAT_MCR2_DONE)) {
661 struct ubsec_q2 *q2;
662 struct ubsec_mcr *mcr;
663
664 mtx_lock(&sc->sc_mcr2lock);
665 while (!SIMPLEQ_EMPTY(&sc->sc_qchip2)) {
666 q2 = SIMPLEQ_FIRST(&sc->sc_qchip2);
667
668 ubsec_dma_sync(&q2->q_mcr,
669 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
670
671 mcr = (struct ubsec_mcr *)q2->q_mcr.dma_vaddr;
672 if ((mcr->mcr_flags & htole16(UBS_MCR_DONE)) == 0) {
673 ubsec_dma_sync(&q2->q_mcr,
674 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
675 break;
676 }
677 SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip2, q_next);
678 ubsec_callback2(sc, q2);
679 /*
680 * Don't send any more packet to chip if there has been
681 * a DMAERR.
682 */
683 if (!(stat & BS_STAT_DMAERR))
684 ubsec_feed2(sc);
685 }
686 mtx_unlock(&sc->sc_mcr2lock);
687 }
688
689 /*
690 * Check to see if we got any DMA Error
691 */
692 if (stat & BS_STAT_DMAERR) {
693 #ifdef UBSEC_DEBUG
694 if (ubsec_debug) {
695 volatile u_int32_t a = READ_REG(sc, BS_ERR);
696
697 printf("dmaerr %s@%08x\n",
698 (a & BS_ERR_READ) ? "read" : "write",
699 a & BS_ERR_ADDR);
700 }
701 #endif /* UBSEC_DEBUG */
702 ubsecstats.hst_dmaerr++;
703 mtx_lock(&sc->sc_mcr1lock);
704 ubsec_totalreset(sc);
705 ubsec_feed(sc);
706 mtx_unlock(&sc->sc_mcr1lock);
707 }
708
709 if (sc->sc_needwakeup) { /* XXX check high watermark */
710 int wakeup;
711
712 mtx_lock(&sc->sc_freeqlock);
713 wakeup = sc->sc_needwakeup & (CRYPTO_SYMQ|CRYPTO_ASYMQ);
714 #ifdef UBSEC_DEBUG
715 if (ubsec_debug)
716 device_printf(sc->sc_dev, "wakeup crypto (%x)\n",
717 sc->sc_needwakeup);
718 #endif /* UBSEC_DEBUG */
719 sc->sc_needwakeup &= ~wakeup;
720 mtx_unlock(&sc->sc_freeqlock);
721 crypto_unblock(sc->sc_cid, wakeup);
722 }
723 }
724
725 /*
726 * ubsec_feed() - aggregate and post requests to chip
727 */
728 static void
729 ubsec_feed(struct ubsec_softc *sc)
730 {
731 struct ubsec_q *q, *q2;
732 int npkts, i;
733 void *v;
734 u_int32_t stat;
735
736 /*
737 * Decide how many ops to combine in a single MCR. We cannot
738 * aggregate more than UBS_MAX_AGGR because this is the number
739 * of slots defined in the data structure. Note that
740 * aggregation only happens if ops are marked batch'able.
741 * Aggregating ops reduces the number of interrupts to the host
742 * but also (potentially) increases the latency for processing
743 * completed ops as we only get an interrupt when all aggregated
744 * ops have completed.
745 */
746 if (sc->sc_nqueue == 0)
747 return;
748 if (sc->sc_nqueue > 1) {
749 npkts = 0;
750 SIMPLEQ_FOREACH(q, &sc->sc_queue, q_next) {
751 npkts++;
752 if ((q->q_crp->crp_flags & CRYPTO_F_BATCH) == 0)
753 break;
754 }
755 } else
756 npkts = 1;
757 /*
758 * Check device status before going any further.
759 */
760 if ((stat = READ_REG(sc, BS_STAT)) & (BS_STAT_MCR1_FULL | BS_STAT_DMAERR)) {
761 if (stat & BS_STAT_DMAERR) {
762 ubsec_totalreset(sc);
763 ubsecstats.hst_dmaerr++;
764 } else
765 ubsecstats.hst_mcr1full++;
766 return;
767 }
768 if (sc->sc_nqueue > ubsecstats.hst_maxqueue)
769 ubsecstats.hst_maxqueue = sc->sc_nqueue;
770 if (npkts > UBS_MAX_AGGR)
771 npkts = UBS_MAX_AGGR;
772 if (npkts < 2) /* special case 1 op */
773 goto feed1;
774
775 ubsecstats.hst_totbatch += npkts-1;
776 #ifdef UBSEC_DEBUG
777 if (ubsec_debug)
778 printf("merging %d records\n", npkts);
779 #endif /* UBSEC_DEBUG */
780
781 q = SIMPLEQ_FIRST(&sc->sc_queue);
782 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
783 --sc->sc_nqueue;
784
785 bus_dmamap_sync(sc->sc_dmat, q->q_src_map, BUS_DMASYNC_PREWRITE);
786 if (q->q_dst_map != NULL)
787 bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, BUS_DMASYNC_PREREAD);
788
789 q->q_nstacked_mcrs = npkts - 1; /* Number of packets stacked */
790
791 for (i = 0; i < q->q_nstacked_mcrs; i++) {
792 q2 = SIMPLEQ_FIRST(&sc->sc_queue);
793 bus_dmamap_sync(sc->sc_dmat, q2->q_src_map,
794 BUS_DMASYNC_PREWRITE);
795 if (q2->q_dst_map != NULL)
796 bus_dmamap_sync(sc->sc_dmat, q2->q_dst_map,
797 BUS_DMASYNC_PREREAD);
798 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
799 --sc->sc_nqueue;
800
801 v = (void*)(((char *)&q2->q_dma->d_dma->d_mcr) + sizeof(struct ubsec_mcr) -
802 sizeof(struct ubsec_mcr_add));
803 bcopy(v, &q->q_dma->d_dma->d_mcradd[i], sizeof(struct ubsec_mcr_add));
804 q->q_stacked_mcr[i] = q2;
805 }
806 q->q_dma->d_dma->d_mcr.mcr_pkts = htole16(npkts);
807 SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next);
808 sc->sc_nqchip += npkts;
809 if (sc->sc_nqchip > ubsecstats.hst_maxqchip)
810 ubsecstats.hst_maxqchip = sc->sc_nqchip;
811 ubsec_dma_sync(&q->q_dma->d_alloc,
812 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
813 WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr +
814 offsetof(struct ubsec_dmachunk, d_mcr));
815 return;
816 feed1:
817 q = SIMPLEQ_FIRST(&sc->sc_queue);
818
819 bus_dmamap_sync(sc->sc_dmat, q->q_src_map, BUS_DMASYNC_PREWRITE);
820 if (q->q_dst_map != NULL)
821 bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, BUS_DMASYNC_PREREAD);
822 ubsec_dma_sync(&q->q_dma->d_alloc,
823 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
824
825 WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr +
826 offsetof(struct ubsec_dmachunk, d_mcr));
827 #ifdef UBSEC_DEBUG
828 if (ubsec_debug)
829 printf("feed1: q->chip %p %08x stat %08x\n",
830 q, (u_int32_t)vtophys(&q->q_dma->d_dma->d_mcr),
831 stat);
832 #endif /* UBSEC_DEBUG */
833 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next);
834 --sc->sc_nqueue;
835 SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next);
836 sc->sc_nqchip++;
837 if (sc->sc_nqchip > ubsecstats.hst_maxqchip)
838 ubsecstats.hst_maxqchip = sc->sc_nqchip;
839 return;
840 }
841
842 static void
843 ubsec_setup_enckey(struct ubsec_session *ses, int algo, caddr_t key)
844 {
845
846 /* Go ahead and compute key in ubsec's byte order */
847 if (algo == CRYPTO_DES_CBC) {
848 bcopy(key, &ses->ses_deskey[0], 8);
849 bcopy(key, &ses->ses_deskey[2], 8);
850 bcopy(key, &ses->ses_deskey[4], 8);
851 } else
852 bcopy(key, ses->ses_deskey, 24);
853
854 SWAP32(ses->ses_deskey[0]);
855 SWAP32(ses->ses_deskey[1]);
856 SWAP32(ses->ses_deskey[2]);
857 SWAP32(ses->ses_deskey[3]);
858 SWAP32(ses->ses_deskey[4]);
859 SWAP32(ses->ses_deskey[5]);
860 }
861
862 static void
863 ubsec_setup_mackey(struct ubsec_session *ses, int algo, caddr_t key, int klen)
864 {
865 MD5_CTX md5ctx;
866 SHA1_CTX sha1ctx;
867 int i;
868
869 for (i = 0; i < klen; i++)
870 key[i] ^= HMAC_IPAD_VAL;
871
872 if (algo == CRYPTO_MD5_HMAC) {
873 MD5Init(&md5ctx);
874 MD5Update(&md5ctx, key, klen);
875 MD5Update(&md5ctx, hmac_ipad_buffer, MD5_HMAC_BLOCK_LEN - klen);
876 bcopy(md5ctx.state, ses->ses_hminner, sizeof(md5ctx.state));
877 } else {
878 SHA1Init(&sha1ctx);
879 SHA1Update(&sha1ctx, key, klen);
880 SHA1Update(&sha1ctx, hmac_ipad_buffer,
881 SHA1_HMAC_BLOCK_LEN - klen);
882 bcopy(sha1ctx.h.b32, ses->ses_hminner, sizeof(sha1ctx.h.b32));
883 }
884
885 for (i = 0; i < klen; i++)
886 key[i] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL);
887
888 if (algo == CRYPTO_MD5_HMAC) {
889 MD5Init(&md5ctx);
890 MD5Update(&md5ctx, key, klen);
891 MD5Update(&md5ctx, hmac_opad_buffer, MD5_HMAC_BLOCK_LEN - klen);
892 bcopy(md5ctx.state, ses->ses_hmouter, sizeof(md5ctx.state));
893 } else {
894 SHA1Init(&sha1ctx);
895 SHA1Update(&sha1ctx, key, klen);
896 SHA1Update(&sha1ctx, hmac_opad_buffer,
897 SHA1_HMAC_BLOCK_LEN - klen);
898 bcopy(sha1ctx.h.b32, ses->ses_hmouter, sizeof(sha1ctx.h.b32));
899 }
900
901 for (i = 0; i < klen; i++)
902 key[i] ^= HMAC_OPAD_VAL;
903 }
904
905 /*
906 * Allocate a new 'session' and return an encoded session id. 'sidp'
907 * contains our registration id, and should contain an encoded session
908 * id on successful allocation.
909 */
910 static int
911 ubsec_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri)
912 {
913 struct ubsec_softc *sc = device_get_softc(dev);
914 struct cryptoini *c, *encini = NULL, *macini = NULL;
915 struct ubsec_session *ses = NULL;
916 int sesn;
917
918 if (sidp == NULL || cri == NULL || sc == NULL)
919 return (EINVAL);
920
921 for (c = cri; c != NULL; c = c->cri_next) {
922 if (c->cri_alg == CRYPTO_MD5_HMAC ||
923 c->cri_alg == CRYPTO_SHA1_HMAC) {
924 if (macini)
925 return (EINVAL);
926 macini = c;
927 } else if (c->cri_alg == CRYPTO_DES_CBC ||
928 c->cri_alg == CRYPTO_3DES_CBC) {
929 if (encini)
930 return (EINVAL);
931 encini = c;
932 } else
933 return (EINVAL);
934 }
935 if (encini == NULL && macini == NULL)
936 return (EINVAL);
937
938 if (sc->sc_sessions == NULL) {
939 ses = sc->sc_sessions = (struct ubsec_session *)malloc(
940 sizeof(struct ubsec_session), M_DEVBUF, M_NOWAIT);
941 if (ses == NULL)
942 return (ENOMEM);
943 sesn = 0;
944 sc->sc_nsessions = 1;
945 } else {
946 for (sesn = 0; sesn < sc->sc_nsessions; sesn++) {
947 if (sc->sc_sessions[sesn].ses_used == 0) {
948 ses = &sc->sc_sessions[sesn];
949 break;
950 }
951 }
952
953 if (ses == NULL) {
954 sesn = sc->sc_nsessions;
955 ses = (struct ubsec_session *)malloc((sesn + 1) *
956 sizeof(struct ubsec_session), M_DEVBUF, M_NOWAIT);
957 if (ses == NULL)
958 return (ENOMEM);
959 bcopy(sc->sc_sessions, ses, sesn *
960 sizeof(struct ubsec_session));
961 bzero(sc->sc_sessions, sesn *
962 sizeof(struct ubsec_session));
963 free(sc->sc_sessions, M_DEVBUF);
964 sc->sc_sessions = ses;
965 ses = &sc->sc_sessions[sesn];
966 sc->sc_nsessions++;
967 }
968 }
969 bzero(ses, sizeof(struct ubsec_session));
970 ses->ses_used = 1;
971
972 if (encini) {
973 /* get an IV, network byte order */
974 /* XXX may read fewer than requested */
975 read_random(ses->ses_iv, sizeof(ses->ses_iv));
976
977 if (encini->cri_key != NULL) {
978 ubsec_setup_enckey(ses, encini->cri_alg,
979 encini->cri_key);
980 }
981 }
982
983 if (macini) {
984 ses->ses_mlen = macini->cri_mlen;
985 if (ses->ses_mlen == 0) {
986 if (macini->cri_alg == CRYPTO_MD5_HMAC)
987 ses->ses_mlen = MD5_HASH_LEN;
988 else
989 ses->ses_mlen = SHA1_HASH_LEN;
990 }
991
992 if (macini->cri_key != NULL) {
993 ubsec_setup_mackey(ses, macini->cri_alg,
994 macini->cri_key, macini->cri_klen / 8);
995 }
996 }
997
998 *sidp = UBSEC_SID(device_get_unit(sc->sc_dev), sesn);
999 return (0);
1000 }
1001
1002 /*
1003 * Deallocate a session.
1004 */
1005 static int
1006 ubsec_freesession(device_t dev, u_int64_t tid)
1007 {
1008 struct ubsec_softc *sc = device_get_softc(dev);
1009 int session, ret;
1010 u_int32_t sid = CRYPTO_SESID2LID(tid);
1011
1012 if (sc == NULL)
1013 return (EINVAL);
1014
1015 session = UBSEC_SESSION(sid);
1016 if (session < sc->sc_nsessions) {
1017 bzero(&sc->sc_sessions[session],
1018 sizeof(sc->sc_sessions[session]));
1019 ret = 0;
1020 } else
1021 ret = EINVAL;
1022
1023 return (ret);
1024 }
1025
1026 static void
1027 ubsec_op_cb(void *arg, bus_dma_segment_t *seg, int nsegs, bus_size_t mapsize, int error)
1028 {
1029 struct ubsec_operand *op = arg;
1030
1031 KASSERT(nsegs <= UBS_MAX_SCATTER,
1032 ("Too many DMA segments returned when mapping operand"));
1033 #ifdef UBSEC_DEBUG
1034 if (ubsec_debug)
1035 printf("ubsec_op_cb: mapsize %u nsegs %d error %d\n",
1036 (u_int) mapsize, nsegs, error);
1037 #endif
1038 if (error != 0)
1039 return;
1040 op->mapsize = mapsize;
1041 op->nsegs = nsegs;
1042 bcopy(seg, op->segs, nsegs * sizeof (seg[0]));
1043 }
1044
1045 static int
1046 ubsec_process(device_t dev, struct cryptop *crp, int hint)
1047 {
1048 struct ubsec_softc *sc = device_get_softc(dev);
1049 struct ubsec_q *q = NULL;
1050 int err = 0, i, j, nicealign;
1051 struct cryptodesc *crd1, *crd2, *maccrd, *enccrd;
1052 int encoffset = 0, macoffset = 0, cpskip, cpoffset;
1053 int sskip, dskip, stheend, dtheend;
1054 int16_t coffset;
1055 struct ubsec_session *ses;
1056 struct ubsec_pktctx ctx;
1057 struct ubsec_dma *dmap = NULL;
1058
1059 if (crp == NULL || crp->crp_callback == NULL || sc == NULL) {
1060 ubsecstats.hst_invalid++;
1061 return (EINVAL);
1062 }
1063 if (UBSEC_SESSION(crp->crp_sid) >= sc->sc_nsessions) {
1064 ubsecstats.hst_badsession++;
1065 return (EINVAL);
1066 }
1067
1068 mtx_lock(&sc->sc_freeqlock);
1069 if (SIMPLEQ_EMPTY(&sc->sc_freequeue)) {
1070 ubsecstats.hst_queuefull++;
1071 sc->sc_needwakeup |= CRYPTO_SYMQ;
1072 mtx_unlock(&sc->sc_freeqlock);
1073 return (ERESTART);
1074 }
1075 q = SIMPLEQ_FIRST(&sc->sc_freequeue);
1076 SIMPLEQ_REMOVE_HEAD(&sc->sc_freequeue, q_next);
1077 mtx_unlock(&sc->sc_freeqlock);
1078
1079 dmap = q->q_dma; /* Save dma pointer */
1080 bzero(q, sizeof(struct ubsec_q));
1081 bzero(&ctx, sizeof(ctx));
1082
1083 q->q_sesn = UBSEC_SESSION(crp->crp_sid);
1084 q->q_dma = dmap;
1085 ses = &sc->sc_sessions[q->q_sesn];
1086
1087 if (crp->crp_flags & CRYPTO_F_IMBUF) {
1088 q->q_src_m = (struct mbuf *)crp->crp_buf;
1089 q->q_dst_m = (struct mbuf *)crp->crp_buf;
1090 } else if (crp->crp_flags & CRYPTO_F_IOV) {
1091 q->q_src_io = (struct uio *)crp->crp_buf;
1092 q->q_dst_io = (struct uio *)crp->crp_buf;
1093 } else {
1094 ubsecstats.hst_badflags++;
1095 err = EINVAL;
1096 goto errout; /* XXX we don't handle contiguous blocks! */
1097 }
1098
1099 bzero(&dmap->d_dma->d_mcr, sizeof(struct ubsec_mcr));
1100
1101 dmap->d_dma->d_mcr.mcr_pkts = htole16(1);
1102 dmap->d_dma->d_mcr.mcr_flags = 0;
1103 q->q_crp = crp;
1104
1105 crd1 = crp->crp_desc;
1106 if (crd1 == NULL) {
1107 ubsecstats.hst_nodesc++;
1108 err = EINVAL;
1109 goto errout;
1110 }
1111 crd2 = crd1->crd_next;
1112
1113 if (crd2 == NULL) {
1114 if (crd1->crd_alg == CRYPTO_MD5_HMAC ||
1115 crd1->crd_alg == CRYPTO_SHA1_HMAC) {
1116 maccrd = crd1;
1117 enccrd = NULL;
1118 } else if (crd1->crd_alg == CRYPTO_DES_CBC ||
1119 crd1->crd_alg == CRYPTO_3DES_CBC) {
1120 maccrd = NULL;
1121 enccrd = crd1;
1122 } else {
1123 ubsecstats.hst_badalg++;
1124 err = EINVAL;
1125 goto errout;
1126 }
1127 } else {
1128 if ((crd1->crd_alg == CRYPTO_MD5_HMAC ||
1129 crd1->crd_alg == CRYPTO_SHA1_HMAC) &&
1130 (crd2->crd_alg == CRYPTO_DES_CBC ||
1131 crd2->crd_alg == CRYPTO_3DES_CBC) &&
1132 ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) {
1133 maccrd = crd1;
1134 enccrd = crd2;
1135 } else if ((crd1->crd_alg == CRYPTO_DES_CBC ||
1136 crd1->crd_alg == CRYPTO_3DES_CBC) &&
1137 (crd2->crd_alg == CRYPTO_MD5_HMAC ||
1138 crd2->crd_alg == CRYPTO_SHA1_HMAC) &&
1139 (crd1->crd_flags & CRD_F_ENCRYPT)) {
1140 enccrd = crd1;
1141 maccrd = crd2;
1142 } else {
1143 /*
1144 * We cannot order the ubsec as requested
1145 */
1146 ubsecstats.hst_badalg++;
1147 err = EINVAL;
1148 goto errout;
1149 }
1150 }
1151
1152 if (enccrd) {
1153 if (enccrd->crd_flags & CRD_F_KEY_EXPLICIT) {
1154 ubsec_setup_enckey(ses, enccrd->crd_alg,
1155 enccrd->crd_key);
1156 }
1157
1158 encoffset = enccrd->crd_skip;
1159 ctx.pc_flags |= htole16(UBS_PKTCTX_ENC_3DES);
1160
1161 if (enccrd->crd_flags & CRD_F_ENCRYPT) {
1162 q->q_flags |= UBSEC_QFLAGS_COPYOUTIV;
1163
1164 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
1165 bcopy(enccrd->crd_iv, ctx.pc_iv, 8);
1166 else {
1167 ctx.pc_iv[0] = ses->ses_iv[0];
1168 ctx.pc_iv[1] = ses->ses_iv[1];
1169 }
1170
1171 if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) {
1172 crypto_copyback(crp->crp_flags, crp->crp_buf,
1173 enccrd->crd_inject, 8, (caddr_t)ctx.pc_iv);
1174 }
1175 } else {
1176 ctx.pc_flags |= htole16(UBS_PKTCTX_INBOUND);
1177
1178 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
1179 bcopy(enccrd->crd_iv, ctx.pc_iv, 8);
1180 else {
1181 crypto_copydata(crp->crp_flags, crp->crp_buf,
1182 enccrd->crd_inject, 8, (caddr_t)ctx.pc_iv);
1183 }
1184 }
1185
1186 ctx.pc_deskey[0] = ses->ses_deskey[0];
1187 ctx.pc_deskey[1] = ses->ses_deskey[1];
1188 ctx.pc_deskey[2] = ses->ses_deskey[2];
1189 ctx.pc_deskey[3] = ses->ses_deskey[3];
1190 ctx.pc_deskey[4] = ses->ses_deskey[4];
1191 ctx.pc_deskey[5] = ses->ses_deskey[5];
1192 SWAP32(ctx.pc_iv[0]);
1193 SWAP32(ctx.pc_iv[1]);
1194 }
1195
1196 if (maccrd) {
1197 if (maccrd->crd_flags & CRD_F_KEY_EXPLICIT) {
1198 ubsec_setup_mackey(ses, maccrd->crd_alg,
1199 maccrd->crd_key, maccrd->crd_klen / 8);
1200 }
1201
1202 macoffset = maccrd->crd_skip;
1203
1204 if (maccrd->crd_alg == CRYPTO_MD5_HMAC)
1205 ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_MD5);
1206 else
1207 ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_SHA1);
1208
1209 for (i = 0; i < 5; i++) {
1210 ctx.pc_hminner[i] = ses->ses_hminner[i];
1211 ctx.pc_hmouter[i] = ses->ses_hmouter[i];
1212
1213 HTOLE32(ctx.pc_hminner[i]);
1214 HTOLE32(ctx.pc_hmouter[i]);
1215 }
1216 }
1217
1218 if (enccrd && maccrd) {
1219 /*
1220 * ubsec cannot handle packets where the end of encryption
1221 * and authentication are not the same, or where the
1222 * encrypted part begins before the authenticated part.
1223 */
1224 if ((encoffset + enccrd->crd_len) !=
1225 (macoffset + maccrd->crd_len)) {
1226 ubsecstats.hst_lenmismatch++;
1227 err = EINVAL;
1228 goto errout;
1229 }
1230 if (enccrd->crd_skip < maccrd->crd_skip) {
1231 ubsecstats.hst_skipmismatch++;
1232 err = EINVAL;
1233 goto errout;
1234 }
1235 sskip = maccrd->crd_skip;
1236 cpskip = dskip = enccrd->crd_skip;
1237 stheend = maccrd->crd_len;
1238 dtheend = enccrd->crd_len;
1239 coffset = enccrd->crd_skip - maccrd->crd_skip;
1240 cpoffset = cpskip + dtheend;
1241 #ifdef UBSEC_DEBUG
1242 if (ubsec_debug) {
1243 printf("mac: skip %d, len %d, inject %d\n",
1244 maccrd->crd_skip, maccrd->crd_len, maccrd->crd_inject);
1245 printf("enc: skip %d, len %d, inject %d\n",
1246 enccrd->crd_skip, enccrd->crd_len, enccrd->crd_inject);
1247 printf("src: skip %d, len %d\n", sskip, stheend);
1248 printf("dst: skip %d, len %d\n", dskip, dtheend);
1249 printf("ubs: coffset %d, pktlen %d, cpskip %d, cpoffset %d\n",
1250 coffset, stheend, cpskip, cpoffset);
1251 }
1252 #endif
1253 } else {
1254 cpskip = dskip = sskip = macoffset + encoffset;
1255 dtheend = stheend = (enccrd)?enccrd->crd_len:maccrd->crd_len;
1256 cpoffset = cpskip + dtheend;
1257 coffset = 0;
1258 }
1259 ctx.pc_offset = htole16(coffset >> 2);
1260
1261 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &q->q_src_map)) {
1262 ubsecstats.hst_nomap++;
1263 err = ENOMEM;
1264 goto errout;
1265 }
1266 if (crp->crp_flags & CRYPTO_F_IMBUF) {
1267 if (bus_dmamap_load_mbuf(sc->sc_dmat, q->q_src_map,
1268 q->q_src_m, ubsec_op_cb, &q->q_src, BUS_DMA_NOWAIT) != 0) {
1269 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
1270 q->q_src_map = NULL;
1271 ubsecstats.hst_noload++;
1272 err = ENOMEM;
1273 goto errout;
1274 }
1275 } else if (crp->crp_flags & CRYPTO_F_IOV) {
1276 if (bus_dmamap_load_uio(sc->sc_dmat, q->q_src_map,
1277 q->q_src_io, ubsec_op_cb, &q->q_src, BUS_DMA_NOWAIT) != 0) {
1278 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
1279 q->q_src_map = NULL;
1280 ubsecstats.hst_noload++;
1281 err = ENOMEM;
1282 goto errout;
1283 }
1284 }
1285 nicealign = ubsec_dmamap_aligned(&q->q_src);
1286
1287 dmap->d_dma->d_mcr.mcr_pktlen = htole16(stheend);
1288
1289 #ifdef UBSEC_DEBUG
1290 if (ubsec_debug)
1291 printf("src skip: %d nicealign: %u\n", sskip, nicealign);
1292 #endif
1293 for (i = j = 0; i < q->q_src_nsegs; i++) {
1294 struct ubsec_pktbuf *pb;
1295 bus_size_t packl = q->q_src_segs[i].ds_len;
1296 bus_addr_t packp = q->q_src_segs[i].ds_addr;
1297
1298 if (sskip >= packl) {
1299 sskip -= packl;
1300 continue;
1301 }
1302
1303 packl -= sskip;
1304 packp += sskip;
1305 sskip = 0;
1306
1307 if (packl > 0xfffc) {
1308 err = EIO;
1309 goto errout;
1310 }
1311
1312 if (j == 0)
1313 pb = &dmap->d_dma->d_mcr.mcr_ipktbuf;
1314 else
1315 pb = &dmap->d_dma->d_sbuf[j - 1];
1316
1317 pb->pb_addr = htole32(packp);
1318
1319 if (stheend) {
1320 if (packl > stheend) {
1321 pb->pb_len = htole32(stheend);
1322 stheend = 0;
1323 } else {
1324 pb->pb_len = htole32(packl);
1325 stheend -= packl;
1326 }
1327 } else
1328 pb->pb_len = htole32(packl);
1329
1330 if ((i + 1) == q->q_src_nsegs)
1331 pb->pb_next = 0;
1332 else
1333 pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
1334 offsetof(struct ubsec_dmachunk, d_sbuf[j]));
1335 j++;
1336 }
1337
1338 if (enccrd == NULL && maccrd != NULL) {
1339 dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr = 0;
1340 dmap->d_dma->d_mcr.mcr_opktbuf.pb_len = 0;
1341 dmap->d_dma->d_mcr.mcr_opktbuf.pb_next = htole32(dmap->d_alloc.dma_paddr +
1342 offsetof(struct ubsec_dmachunk, d_macbuf[0]));
1343 #ifdef UBSEC_DEBUG
1344 if (ubsec_debug)
1345 printf("opkt: %x %x %x\n",
1346 dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr,
1347 dmap->d_dma->d_mcr.mcr_opktbuf.pb_len,
1348 dmap->d_dma->d_mcr.mcr_opktbuf.pb_next);
1349 #endif
1350 } else {
1351 if (crp->crp_flags & CRYPTO_F_IOV) {
1352 if (!nicealign) {
1353 ubsecstats.hst_iovmisaligned++;
1354 err = EINVAL;
1355 goto errout;
1356 }
1357 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT,
1358 &q->q_dst_map)) {
1359 ubsecstats.hst_nomap++;
1360 err = ENOMEM;
1361 goto errout;
1362 }
1363 if (bus_dmamap_load_uio(sc->sc_dmat, q->q_dst_map,
1364 q->q_dst_io, ubsec_op_cb, &q->q_dst, BUS_DMA_NOWAIT) != 0) {
1365 bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
1366 q->q_dst_map = NULL;
1367 ubsecstats.hst_noload++;
1368 err = ENOMEM;
1369 goto errout;
1370 }
1371 } else if (crp->crp_flags & CRYPTO_F_IMBUF) {
1372 if (nicealign) {
1373 q->q_dst = q->q_src;
1374 } else {
1375 int totlen, len;
1376 struct mbuf *m, *top, **mp;
1377
1378 ubsecstats.hst_unaligned++;
1379 totlen = q->q_src_mapsize;
1380 if (totlen >= MINCLSIZE) {
1381 m = m_getcl(M_DONTWAIT, MT_DATA,
1382 q->q_src_m->m_flags & M_PKTHDR);
1383 len = MCLBYTES;
1384 } else if (q->q_src_m->m_flags & M_PKTHDR) {
1385 m = m_gethdr(M_DONTWAIT, MT_DATA);
1386 len = MHLEN;
1387 } else {
1388 m = m_get(M_DONTWAIT, MT_DATA);
1389 len = MLEN;
1390 }
1391 if (m && q->q_src_m->m_flags & M_PKTHDR &&
1392 !m_dup_pkthdr(m, q->q_src_m, M_DONTWAIT)) {
1393 m_free(m);
1394 m = NULL;
1395 }
1396 if (m == NULL) {
1397 ubsecstats.hst_nombuf++;
1398 err = sc->sc_nqueue ? ERESTART : ENOMEM;
1399 goto errout;
1400 }
1401 m->m_len = len = min(totlen, len);
1402 totlen -= len;
1403 top = m;
1404 mp = ⊤
1405
1406 while (totlen > 0) {
1407 if (totlen >= MINCLSIZE) {
1408 m = m_getcl(M_DONTWAIT,
1409 MT_DATA, 0);
1410 len = MCLBYTES;
1411 } else {
1412 m = m_get(M_DONTWAIT, MT_DATA);
1413 len = MLEN;
1414 }
1415 if (m == NULL) {
1416 m_freem(top);
1417 ubsecstats.hst_nombuf++;
1418 err = sc->sc_nqueue ? ERESTART : ENOMEM;
1419 goto errout;
1420 }
1421 m->m_len = len = min(totlen, len);
1422 totlen -= len;
1423 *mp = m;
1424 mp = &m->m_next;
1425 }
1426 q->q_dst_m = top;
1427 ubsec_mcopy(q->q_src_m, q->q_dst_m,
1428 cpskip, cpoffset);
1429 if (bus_dmamap_create(sc->sc_dmat,
1430 BUS_DMA_NOWAIT, &q->q_dst_map) != 0) {
1431 ubsecstats.hst_nomap++;
1432 err = ENOMEM;
1433 goto errout;
1434 }
1435 if (bus_dmamap_load_mbuf(sc->sc_dmat,
1436 q->q_dst_map, q->q_dst_m,
1437 ubsec_op_cb, &q->q_dst,
1438 BUS_DMA_NOWAIT) != 0) {
1439 bus_dmamap_destroy(sc->sc_dmat,
1440 q->q_dst_map);
1441 q->q_dst_map = NULL;
1442 ubsecstats.hst_noload++;
1443 err = ENOMEM;
1444 goto errout;
1445 }
1446 }
1447 } else {
1448 ubsecstats.hst_badflags++;
1449 err = EINVAL;
1450 goto errout;
1451 }
1452
1453 #ifdef UBSEC_DEBUG
1454 if (ubsec_debug)
1455 printf("dst skip: %d\n", dskip);
1456 #endif
1457 for (i = j = 0; i < q->q_dst_nsegs; i++) {
1458 struct ubsec_pktbuf *pb;
1459 bus_size_t packl = q->q_dst_segs[i].ds_len;
1460 bus_addr_t packp = q->q_dst_segs[i].ds_addr;
1461
1462 if (dskip >= packl) {
1463 dskip -= packl;
1464 continue;
1465 }
1466
1467 packl -= dskip;
1468 packp += dskip;
1469 dskip = 0;
1470
1471 if (packl > 0xfffc) {
1472 err = EIO;
1473 goto errout;
1474 }
1475
1476 if (j == 0)
1477 pb = &dmap->d_dma->d_mcr.mcr_opktbuf;
1478 else
1479 pb = &dmap->d_dma->d_dbuf[j - 1];
1480
1481 pb->pb_addr = htole32(packp);
1482
1483 if (dtheend) {
1484 if (packl > dtheend) {
1485 pb->pb_len = htole32(dtheend);
1486 dtheend = 0;
1487 } else {
1488 pb->pb_len = htole32(packl);
1489 dtheend -= packl;
1490 }
1491 } else
1492 pb->pb_len = htole32(packl);
1493
1494 if ((i + 1) == q->q_dst_nsegs) {
1495 if (maccrd)
1496 pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
1497 offsetof(struct ubsec_dmachunk, d_macbuf[0]));
1498 else
1499 pb->pb_next = 0;
1500 } else
1501 pb->pb_next = htole32(dmap->d_alloc.dma_paddr +
1502 offsetof(struct ubsec_dmachunk, d_dbuf[j]));
1503 j++;
1504 }
1505 }
1506
1507 dmap->d_dma->d_mcr.mcr_cmdctxp = htole32(dmap->d_alloc.dma_paddr +
1508 offsetof(struct ubsec_dmachunk, d_ctx));
1509
1510 if (sc->sc_flags & UBS_FLAGS_LONGCTX) {
1511 struct ubsec_pktctx_long *ctxl;
1512
1513 ctxl = (struct ubsec_pktctx_long *)(dmap->d_alloc.dma_vaddr +
1514 offsetof(struct ubsec_dmachunk, d_ctx));
1515
1516 /* transform small context into long context */
1517 ctxl->pc_len = htole16(sizeof(struct ubsec_pktctx_long));
1518 ctxl->pc_type = htole16(UBS_PKTCTX_TYPE_IPSEC);
1519 ctxl->pc_flags = ctx.pc_flags;
1520 ctxl->pc_offset = ctx.pc_offset;
1521 for (i = 0; i < 6; i++)
1522 ctxl->pc_deskey[i] = ctx.pc_deskey[i];
1523 for (i = 0; i < 5; i++)
1524 ctxl->pc_hminner[i] = ctx.pc_hminner[i];
1525 for (i = 0; i < 5; i++)
1526 ctxl->pc_hmouter[i] = ctx.pc_hmouter[i];
1527 ctxl->pc_iv[0] = ctx.pc_iv[0];
1528 ctxl->pc_iv[1] = ctx.pc_iv[1];
1529 } else
1530 bcopy(&ctx, dmap->d_alloc.dma_vaddr +
1531 offsetof(struct ubsec_dmachunk, d_ctx),
1532 sizeof(struct ubsec_pktctx));
1533
1534 mtx_lock(&sc->sc_mcr1lock);
1535 SIMPLEQ_INSERT_TAIL(&sc->sc_queue, q, q_next);
1536 sc->sc_nqueue++;
1537 ubsecstats.hst_ipackets++;
1538 ubsecstats.hst_ibytes += dmap->d_alloc.dma_size;
1539 if ((hint & CRYPTO_HINT_MORE) == 0 || sc->sc_nqueue >= UBS_MAX_AGGR)
1540 ubsec_feed(sc);
1541 mtx_unlock(&sc->sc_mcr1lock);
1542 return (0);
1543
1544 errout:
1545 if (q != NULL) {
1546 if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m))
1547 m_freem(q->q_dst_m);
1548
1549 if (q->q_dst_map != NULL && q->q_dst_map != q->q_src_map) {
1550 bus_dmamap_unload(sc->sc_dmat, q->q_dst_map);
1551 bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
1552 }
1553 if (q->q_src_map != NULL) {
1554 bus_dmamap_unload(sc->sc_dmat, q->q_src_map);
1555 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
1556 }
1557 }
1558 if (q != NULL || err == ERESTART) {
1559 mtx_lock(&sc->sc_freeqlock);
1560 if (q != NULL)
1561 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
1562 if (err == ERESTART)
1563 sc->sc_needwakeup |= CRYPTO_SYMQ;
1564 mtx_unlock(&sc->sc_freeqlock);
1565 }
1566 if (err != ERESTART) {
1567 crp->crp_etype = err;
1568 crypto_done(crp);
1569 }
1570 return (err);
1571 }
1572
1573 static void
1574 ubsec_callback(struct ubsec_softc *sc, struct ubsec_q *q)
1575 {
1576 struct cryptop *crp = (struct cryptop *)q->q_crp;
1577 struct cryptodesc *crd;
1578 struct ubsec_dma *dmap = q->q_dma;
1579
1580 ubsecstats.hst_opackets++;
1581 ubsecstats.hst_obytes += dmap->d_alloc.dma_size;
1582
1583 ubsec_dma_sync(&dmap->d_alloc,
1584 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
1585 if (q->q_dst_map != NULL && q->q_dst_map != q->q_src_map) {
1586 bus_dmamap_sync(sc->sc_dmat, q->q_dst_map,
1587 BUS_DMASYNC_POSTREAD);
1588 bus_dmamap_unload(sc->sc_dmat, q->q_dst_map);
1589 bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map);
1590 }
1591 bus_dmamap_sync(sc->sc_dmat, q->q_src_map, BUS_DMASYNC_POSTWRITE);
1592 bus_dmamap_unload(sc->sc_dmat, q->q_src_map);
1593 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map);
1594
1595 if ((crp->crp_flags & CRYPTO_F_IMBUF) && (q->q_src_m != q->q_dst_m)) {
1596 m_freem(q->q_src_m);
1597 crp->crp_buf = (caddr_t)q->q_dst_m;
1598 }
1599
1600 /* copy out IV for future use */
1601 if (q->q_flags & UBSEC_QFLAGS_COPYOUTIV) {
1602 for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
1603 if (crd->crd_alg != CRYPTO_DES_CBC &&
1604 crd->crd_alg != CRYPTO_3DES_CBC)
1605 continue;
1606 crypto_copydata(crp->crp_flags, crp->crp_buf,
1607 crd->crd_skip + crd->crd_len - 8, 8,
1608 (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv);
1609 break;
1610 }
1611 }
1612
1613 for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
1614 if (crd->crd_alg != CRYPTO_MD5_HMAC &&
1615 crd->crd_alg != CRYPTO_SHA1_HMAC)
1616 continue;
1617 crypto_copyback(crp->crp_flags, crp->crp_buf, crd->crd_inject,
1618 sc->sc_sessions[q->q_sesn].ses_mlen,
1619 (caddr_t)dmap->d_dma->d_macbuf);
1620 break;
1621 }
1622 mtx_lock(&sc->sc_freeqlock);
1623 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
1624 mtx_unlock(&sc->sc_freeqlock);
1625 crypto_done(crp);
1626 }
1627
1628 static void
1629 ubsec_mcopy(struct mbuf *srcm, struct mbuf *dstm, int hoffset, int toffset)
1630 {
1631 int i, j, dlen, slen;
1632 caddr_t dptr, sptr;
1633
1634 j = 0;
1635 sptr = srcm->m_data;
1636 slen = srcm->m_len;
1637 dptr = dstm->m_data;
1638 dlen = dstm->m_len;
1639
1640 while (1) {
1641 for (i = 0; i < min(slen, dlen); i++) {
1642 if (j < hoffset || j >= toffset)
1643 *dptr++ = *sptr++;
1644 slen--;
1645 dlen--;
1646 j++;
1647 }
1648 if (slen == 0) {
1649 srcm = srcm->m_next;
1650 if (srcm == NULL)
1651 return;
1652 sptr = srcm->m_data;
1653 slen = srcm->m_len;
1654 }
1655 if (dlen == 0) {
1656 dstm = dstm->m_next;
1657 if (dstm == NULL)
1658 return;
1659 dptr = dstm->m_data;
1660 dlen = dstm->m_len;
1661 }
1662 }
1663 }
1664
1665 /*
1666 * feed the key generator, must be called at splimp() or higher.
1667 */
1668 static int
1669 ubsec_feed2(struct ubsec_softc *sc)
1670 {
1671 struct ubsec_q2 *q;
1672
1673 while (!SIMPLEQ_EMPTY(&sc->sc_queue2)) {
1674 if (READ_REG(sc, BS_STAT) & BS_STAT_MCR2_FULL)
1675 break;
1676 q = SIMPLEQ_FIRST(&sc->sc_queue2);
1677
1678 ubsec_dma_sync(&q->q_mcr,
1679 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1680 ubsec_dma_sync(&q->q_ctx, BUS_DMASYNC_PREWRITE);
1681
1682 WRITE_REG(sc, BS_MCR2, q->q_mcr.dma_paddr);
1683 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue2, q_next);
1684 --sc->sc_nqueue2;
1685 SIMPLEQ_INSERT_TAIL(&sc->sc_qchip2, q, q_next);
1686 }
1687 return (0);
1688 }
1689
1690 /*
1691 * Callback for handling random numbers
1692 */
1693 static void
1694 ubsec_callback2(struct ubsec_softc *sc, struct ubsec_q2 *q)
1695 {
1696 struct cryptkop *krp;
1697 struct ubsec_ctx_keyop *ctx;
1698
1699 ctx = (struct ubsec_ctx_keyop *)q->q_ctx.dma_vaddr;
1700 ubsec_dma_sync(&q->q_ctx, BUS_DMASYNC_POSTWRITE);
1701
1702 switch (q->q_type) {
1703 #ifndef UBSEC_NO_RNG
1704 case UBS_CTXOP_RNGBYPASS: {
1705 struct ubsec_q2_rng *rng = (struct ubsec_q2_rng *)q;
1706
1707 ubsec_dma_sync(&rng->rng_buf, BUS_DMASYNC_POSTREAD);
1708 (*sc->sc_harvest)(sc->sc_rndtest,
1709 rng->rng_buf.dma_vaddr,
1710 UBSEC_RNG_BUFSIZ*sizeof (u_int32_t));
1711 rng->rng_used = 0;
1712 callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc);
1713 break;
1714 }
1715 #endif
1716 case UBS_CTXOP_MODEXP: {
1717 struct ubsec_q2_modexp *me = (struct ubsec_q2_modexp *)q;
1718 u_int rlen, clen;
1719
1720 krp = me->me_krp;
1721 rlen = (me->me_modbits + 7) / 8;
1722 clen = (krp->krp_param[krp->krp_iparams].crp_nbits + 7) / 8;
1723
1724 ubsec_dma_sync(&me->me_M, BUS_DMASYNC_POSTWRITE);
1725 ubsec_dma_sync(&me->me_E, BUS_DMASYNC_POSTWRITE);
1726 ubsec_dma_sync(&me->me_C, BUS_DMASYNC_POSTREAD);
1727 ubsec_dma_sync(&me->me_epb, BUS_DMASYNC_POSTWRITE);
1728
1729 if (clen < rlen)
1730 krp->krp_status = E2BIG;
1731 else {
1732 if (sc->sc_flags & UBS_FLAGS_HWNORM) {
1733 bzero(krp->krp_param[krp->krp_iparams].crp_p,
1734 (krp->krp_param[krp->krp_iparams].crp_nbits
1735 + 7) / 8);
1736 bcopy(me->me_C.dma_vaddr,
1737 krp->krp_param[krp->krp_iparams].crp_p,
1738 (me->me_modbits + 7) / 8);
1739 } else
1740 ubsec_kshift_l(me->me_shiftbits,
1741 me->me_C.dma_vaddr, me->me_normbits,
1742 krp->krp_param[krp->krp_iparams].crp_p,
1743 krp->krp_param[krp->krp_iparams].crp_nbits);
1744 }
1745
1746 crypto_kdone(krp);
1747
1748 /* bzero all potentially sensitive data */
1749 bzero(me->me_E.dma_vaddr, me->me_E.dma_size);
1750 bzero(me->me_M.dma_vaddr, me->me_M.dma_size);
1751 bzero(me->me_C.dma_vaddr, me->me_C.dma_size);
1752 bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size);
1753
1754 /* Can't free here, so put us on the free list. */
1755 SIMPLEQ_INSERT_TAIL(&sc->sc_q2free, &me->me_q, q_next);
1756 break;
1757 }
1758 case UBS_CTXOP_RSAPRIV: {
1759 struct ubsec_q2_rsapriv *rp = (struct ubsec_q2_rsapriv *)q;
1760 u_int len;
1761
1762 krp = rp->rpr_krp;
1763 ubsec_dma_sync(&rp->rpr_msgin, BUS_DMASYNC_POSTWRITE);
1764 ubsec_dma_sync(&rp->rpr_msgout, BUS_DMASYNC_POSTREAD);
1765
1766 len = (krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT].crp_nbits + 7) / 8;
1767 bcopy(rp->rpr_msgout.dma_vaddr,
1768 krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT].crp_p, len);
1769
1770 crypto_kdone(krp);
1771
1772 bzero(rp->rpr_msgin.dma_vaddr, rp->rpr_msgin.dma_size);
1773 bzero(rp->rpr_msgout.dma_vaddr, rp->rpr_msgout.dma_size);
1774 bzero(rp->rpr_q.q_ctx.dma_vaddr, rp->rpr_q.q_ctx.dma_size);
1775
1776 /* Can't free here, so put us on the free list. */
1777 SIMPLEQ_INSERT_TAIL(&sc->sc_q2free, &rp->rpr_q, q_next);
1778 break;
1779 }
1780 default:
1781 device_printf(sc->sc_dev, "unknown ctx op: %x\n",
1782 letoh16(ctx->ctx_op));
1783 break;
1784 }
1785 }
1786
1787 #ifndef UBSEC_NO_RNG
1788 static void
1789 ubsec_rng(void *vsc)
1790 {
1791 struct ubsec_softc *sc = vsc;
1792 struct ubsec_q2_rng *rng = &sc->sc_rng;
1793 struct ubsec_mcr *mcr;
1794 struct ubsec_ctx_rngbypass *ctx;
1795
1796 mtx_lock(&sc->sc_mcr2lock);
1797 if (rng->rng_used) {
1798 mtx_unlock(&sc->sc_mcr2lock);
1799 return;
1800 }
1801 sc->sc_nqueue2++;
1802 if (sc->sc_nqueue2 >= UBS_MAX_NQUEUE)
1803 goto out;
1804
1805 mcr = (struct ubsec_mcr *)rng->rng_q.q_mcr.dma_vaddr;
1806 ctx = (struct ubsec_ctx_rngbypass *)rng->rng_q.q_ctx.dma_vaddr;
1807
1808 mcr->mcr_pkts = htole16(1);
1809 mcr->mcr_flags = 0;
1810 mcr->mcr_cmdctxp = htole32(rng->rng_q.q_ctx.dma_paddr);
1811 mcr->mcr_ipktbuf.pb_addr = mcr->mcr_ipktbuf.pb_next = 0;
1812 mcr->mcr_ipktbuf.pb_len = 0;
1813 mcr->mcr_reserved = mcr->mcr_pktlen = 0;
1814 mcr->mcr_opktbuf.pb_addr = htole32(rng->rng_buf.dma_paddr);
1815 mcr->mcr_opktbuf.pb_len = htole32(((sizeof(u_int32_t) * UBSEC_RNG_BUFSIZ)) &
1816 UBS_PKTBUF_LEN);
1817 mcr->mcr_opktbuf.pb_next = 0;
1818
1819 ctx->rbp_len = htole16(sizeof(struct ubsec_ctx_rngbypass));
1820 ctx->rbp_op = htole16(UBS_CTXOP_RNGBYPASS);
1821 rng->rng_q.q_type = UBS_CTXOP_RNGBYPASS;
1822
1823 ubsec_dma_sync(&rng->rng_buf, BUS_DMASYNC_PREREAD);
1824
1825 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &rng->rng_q, q_next);
1826 rng->rng_used = 1;
1827 ubsec_feed2(sc);
1828 ubsecstats.hst_rng++;
1829 mtx_unlock(&sc->sc_mcr2lock);
1830
1831 return;
1832
1833 out:
1834 /*
1835 * Something weird happened, generate our own call back.
1836 */
1837 sc->sc_nqueue2--;
1838 mtx_unlock(&sc->sc_mcr2lock);
1839 callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc);
1840 }
1841 #endif /* UBSEC_NO_RNG */
1842
1843 static void
1844 ubsec_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1845 {
1846 bus_addr_t *paddr = (bus_addr_t*) arg;
1847 *paddr = segs->ds_addr;
1848 }
1849
1850 static int
1851 ubsec_dma_malloc(
1852 struct ubsec_softc *sc,
1853 bus_size_t size,
1854 struct ubsec_dma_alloc *dma,
1855 int mapflags
1856 )
1857 {
1858 int r;
1859
1860 /* XXX could specify sc_dmat as parent but that just adds overhead */
1861 r = bus_dma_tag_create(NULL, /* parent */
1862 1, 0, /* alignment, bounds */
1863 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1864 BUS_SPACE_MAXADDR, /* highaddr */
1865 NULL, NULL, /* filter, filterarg */
1866 size, /* maxsize */
1867 1, /* nsegments */
1868 size, /* maxsegsize */
1869 BUS_DMA_ALLOCNOW, /* flags */
1870 NULL, NULL, /* lockfunc, lockarg */
1871 &dma->dma_tag);
1872 if (r != 0) {
1873 device_printf(sc->sc_dev, "ubsec_dma_malloc: "
1874 "bus_dma_tag_create failed; error %u\n", r);
1875 goto fail_0;
1876 }
1877
1878 r = bus_dmamap_create(dma->dma_tag, BUS_DMA_NOWAIT, &dma->dma_map);
1879 if (r != 0) {
1880 device_printf(sc->sc_dev, "ubsec_dma_malloc: "
1881 "bus_dmamap_create failed; error %u\n", r);
1882 goto fail_1;
1883 }
1884
1885 r = bus_dmamem_alloc(dma->dma_tag, (void**) &dma->dma_vaddr,
1886 BUS_DMA_NOWAIT, &dma->dma_map);
1887 if (r != 0) {
1888 device_printf(sc->sc_dev, "ubsec_dma_malloc: "
1889 "bus_dmammem_alloc failed; size %zu, error %u\n",
1890 size, r);
1891 goto fail_2;
1892 }
1893
1894 r = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr,
1895 size,
1896 ubsec_dmamap_cb,
1897 &dma->dma_paddr,
1898 mapflags | BUS_DMA_NOWAIT);
1899 if (r != 0) {
1900 device_printf(sc->sc_dev, "ubsec_dma_malloc: "
1901 "bus_dmamap_load failed; error %u\n", r);
1902 goto fail_3;
1903 }
1904
1905 dma->dma_size = size;
1906 return (0);
1907
1908 fail_3:
1909 bus_dmamap_unload(dma->dma_tag, dma->dma_map);
1910 fail_2:
1911 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
1912 fail_1:
1913 bus_dmamap_destroy(dma->dma_tag, dma->dma_map);
1914 bus_dma_tag_destroy(dma->dma_tag);
1915 fail_0:
1916 dma->dma_map = NULL;
1917 dma->dma_tag = NULL;
1918 return (r);
1919 }
1920
1921 static void
1922 ubsec_dma_free(struct ubsec_softc *sc, struct ubsec_dma_alloc *dma)
1923 {
1924 bus_dmamap_unload(dma->dma_tag, dma->dma_map);
1925 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
1926 bus_dmamap_destroy(dma->dma_tag, dma->dma_map);
1927 bus_dma_tag_destroy(dma->dma_tag);
1928 }
1929
1930 /*
1931 * Resets the board. Values in the regesters are left as is
1932 * from the reset (i.e. initial values are assigned elsewhere).
1933 */
1934 static void
1935 ubsec_reset_board(struct ubsec_softc *sc)
1936 {
1937 volatile u_int32_t ctrl;
1938
1939 ctrl = READ_REG(sc, BS_CTRL);
1940 ctrl |= BS_CTRL_RESET;
1941 WRITE_REG(sc, BS_CTRL, ctrl);
1942
1943 /*
1944 * Wait aprox. 30 PCI clocks = 900 ns = 0.9 us
1945 */
1946 DELAY(10);
1947 }
1948
1949 /*
1950 * Init Broadcom registers
1951 */
1952 static void
1953 ubsec_init_board(struct ubsec_softc *sc)
1954 {
1955 u_int32_t ctrl;
1956
1957 ctrl = READ_REG(sc, BS_CTRL);
1958 ctrl &= ~(BS_CTRL_BE32 | BS_CTRL_BE64);
1959 ctrl |= BS_CTRL_LITTLE_ENDIAN | BS_CTRL_MCR1INT;
1960
1961 if (sc->sc_flags & (UBS_FLAGS_KEY|UBS_FLAGS_RNG))
1962 ctrl |= BS_CTRL_MCR2INT;
1963 else
1964 ctrl &= ~BS_CTRL_MCR2INT;
1965
1966 if (sc->sc_flags & UBS_FLAGS_HWNORM)
1967 ctrl &= ~BS_CTRL_SWNORM;
1968
1969 WRITE_REG(sc, BS_CTRL, ctrl);
1970 }
1971
1972 /*
1973 * Init Broadcom PCI registers
1974 */
1975 static void
1976 ubsec_init_pciregs(device_t dev)
1977 {
1978 #if 0
1979 u_int32_t misc;
1980
1981 misc = pci_conf_read(pc, pa->pa_tag, BS_RTY_TOUT);
1982 misc = (misc & ~(UBS_PCI_RTY_MASK << UBS_PCI_RTY_SHIFT))
1983 | ((UBS_DEF_RTY & 0xff) << UBS_PCI_RTY_SHIFT);
1984 misc = (misc & ~(UBS_PCI_TOUT_MASK << UBS_PCI_TOUT_SHIFT))
1985 | ((UBS_DEF_TOUT & 0xff) << UBS_PCI_TOUT_SHIFT);
1986 pci_conf_write(pc, pa->pa_tag, BS_RTY_TOUT, misc);
1987 #endif
1988
1989 /*
1990 * This will set the cache line size to 1, this will
1991 * force the BCM58xx chip just to do burst read/writes.
1992 * Cache line read/writes are to slow
1993 */
1994 pci_write_config(dev, PCIR_CACHELNSZ, UBS_DEF_CACHELINE, 1);
1995 }
1996
1997 /*
1998 * Clean up after a chip crash.
1999 * It is assumed that the caller in splimp()
2000 */
2001 static void
2002 ubsec_cleanchip(struct ubsec_softc *sc)
2003 {
2004 struct ubsec_q *q;
2005
2006 while (!SIMPLEQ_EMPTY(&sc->sc_qchip)) {
2007 q = SIMPLEQ_FIRST(&sc->sc_qchip);
2008 SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q_next);
2009 ubsec_free_q(sc, q);
2010 }
2011 sc->sc_nqchip = 0;
2012 }
2013
2014 /*
2015 * free a ubsec_q
2016 * It is assumed that the caller is within splimp().
2017 */
2018 static int
2019 ubsec_free_q(struct ubsec_softc *sc, struct ubsec_q *q)
2020 {
2021 struct ubsec_q *q2;
2022 struct cryptop *crp;
2023 int npkts;
2024 int i;
2025
2026 npkts = q->q_nstacked_mcrs;
2027
2028 for (i = 0; i < npkts; i++) {
2029 if(q->q_stacked_mcr[i]) {
2030 q2 = q->q_stacked_mcr[i];
2031
2032 if ((q2->q_dst_m != NULL) && (q2->q_src_m != q2->q_dst_m))
2033 m_freem(q2->q_dst_m);
2034
2035 crp = (struct cryptop *)q2->q_crp;
2036
2037 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q2, q_next);
2038
2039 crp->crp_etype = EFAULT;
2040 crypto_done(crp);
2041 } else {
2042 break;
2043 }
2044 }
2045
2046 /*
2047 * Free header MCR
2048 */
2049 if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m))
2050 m_freem(q->q_dst_m);
2051
2052 crp = (struct cryptop *)q->q_crp;
2053
2054 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next);
2055
2056 crp->crp_etype = EFAULT;
2057 crypto_done(crp);
2058 return(0);
2059 }
2060
2061 /*
2062 * Routine to reset the chip and clean up.
2063 * It is assumed that the caller is in splimp()
2064 */
2065 static void
2066 ubsec_totalreset(struct ubsec_softc *sc)
2067 {
2068 ubsec_reset_board(sc);
2069 ubsec_init_board(sc);
2070 ubsec_cleanchip(sc);
2071 }
2072
2073 static int
2074 ubsec_dmamap_aligned(struct ubsec_operand *op)
2075 {
2076 int i;
2077
2078 for (i = 0; i < op->nsegs; i++) {
2079 if (op->segs[i].ds_addr & 3)
2080 return (0);
2081 if ((i != (op->nsegs - 1)) &&
2082 (op->segs[i].ds_len & 3))
2083 return (0);
2084 }
2085 return (1);
2086 }
2087
2088 static void
2089 ubsec_kfree(struct ubsec_softc *sc, struct ubsec_q2 *q)
2090 {
2091 switch (q->q_type) {
2092 case UBS_CTXOP_MODEXP: {
2093 struct ubsec_q2_modexp *me = (struct ubsec_q2_modexp *)q;
2094
2095 ubsec_dma_free(sc, &me->me_q.q_mcr);
2096 ubsec_dma_free(sc, &me->me_q.q_ctx);
2097 ubsec_dma_free(sc, &me->me_M);
2098 ubsec_dma_free(sc, &me->me_E);
2099 ubsec_dma_free(sc, &me->me_C);
2100 ubsec_dma_free(sc, &me->me_epb);
2101 free(me, M_DEVBUF);
2102 break;
2103 }
2104 case UBS_CTXOP_RSAPRIV: {
2105 struct ubsec_q2_rsapriv *rp = (struct ubsec_q2_rsapriv *)q;
2106
2107 ubsec_dma_free(sc, &rp->rpr_q.q_mcr);
2108 ubsec_dma_free(sc, &rp->rpr_q.q_ctx);
2109 ubsec_dma_free(sc, &rp->rpr_msgin);
2110 ubsec_dma_free(sc, &rp->rpr_msgout);
2111 free(rp, M_DEVBUF);
2112 break;
2113 }
2114 default:
2115 device_printf(sc->sc_dev, "invalid kfree 0x%x\n", q->q_type);
2116 break;
2117 }
2118 }
2119
2120 static int
2121 ubsec_kprocess(device_t dev, struct cryptkop *krp, int hint)
2122 {
2123 struct ubsec_softc *sc = device_get_softc(dev);
2124 int r;
2125
2126 if (krp == NULL || krp->krp_callback == NULL)
2127 return (EINVAL);
2128
2129 while (!SIMPLEQ_EMPTY(&sc->sc_q2free)) {
2130 struct ubsec_q2 *q;
2131
2132 q = SIMPLEQ_FIRST(&sc->sc_q2free);
2133 SIMPLEQ_REMOVE_HEAD(&sc->sc_q2free, q_next);
2134 ubsec_kfree(sc, q);
2135 }
2136
2137 switch (krp->krp_op) {
2138 case CRK_MOD_EXP:
2139 if (sc->sc_flags & UBS_FLAGS_HWNORM)
2140 r = ubsec_kprocess_modexp_hw(sc, krp, hint);
2141 else
2142 r = ubsec_kprocess_modexp_sw(sc, krp, hint);
2143 break;
2144 case CRK_MOD_EXP_CRT:
2145 return (ubsec_kprocess_rsapriv(sc, krp, hint));
2146 default:
2147 device_printf(sc->sc_dev, "kprocess: invalid op 0x%x\n",
2148 krp->krp_op);
2149 krp->krp_status = EOPNOTSUPP;
2150 crypto_kdone(krp);
2151 return (0);
2152 }
2153 return (0); /* silence compiler */
2154 }
2155
2156 /*
2157 * Start computation of cr[C] = (cr[M] ^ cr[E]) mod cr[N] (sw normalization)
2158 */
2159 static int
2160 ubsec_kprocess_modexp_sw(struct ubsec_softc *sc, struct cryptkop *krp, int hint)
2161 {
2162 struct ubsec_q2_modexp *me;
2163 struct ubsec_mcr *mcr;
2164 struct ubsec_ctx_modexp *ctx;
2165 struct ubsec_pktbuf *epb;
2166 int err = 0;
2167 u_int nbits, normbits, mbits, shiftbits, ebits;
2168
2169 me = (struct ubsec_q2_modexp *)malloc(sizeof *me, M_DEVBUF, M_NOWAIT);
2170 if (me == NULL) {
2171 err = ENOMEM;
2172 goto errout;
2173 }
2174 bzero(me, sizeof *me);
2175 me->me_krp = krp;
2176 me->me_q.q_type = UBS_CTXOP_MODEXP;
2177
2178 nbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_N]);
2179 if (nbits <= 512)
2180 normbits = 512;
2181 else if (nbits <= 768)
2182 normbits = 768;
2183 else if (nbits <= 1024)
2184 normbits = 1024;
2185 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 1536)
2186 normbits = 1536;
2187 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 2048)
2188 normbits = 2048;
2189 else {
2190 err = E2BIG;
2191 goto errout;
2192 }
2193
2194 shiftbits = normbits - nbits;
2195
2196 me->me_modbits = nbits;
2197 me->me_shiftbits = shiftbits;
2198 me->me_normbits = normbits;
2199
2200 /* Sanity check: result bits must be >= true modulus bits. */
2201 if (krp->krp_param[krp->krp_iparams].crp_nbits < nbits) {
2202 err = ERANGE;
2203 goto errout;
2204 }
2205
2206 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr),
2207 &me->me_q.q_mcr, 0)) {
2208 err = ENOMEM;
2209 goto errout;
2210 }
2211 mcr = (struct ubsec_mcr *)me->me_q.q_mcr.dma_vaddr;
2212
2213 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_modexp),
2214 &me->me_q.q_ctx, 0)) {
2215 err = ENOMEM;
2216 goto errout;
2217 }
2218
2219 mbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_M]);
2220 if (mbits > nbits) {
2221 err = E2BIG;
2222 goto errout;
2223 }
2224 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_M, 0)) {
2225 err = ENOMEM;
2226 goto errout;
2227 }
2228 ubsec_kshift_r(shiftbits,
2229 krp->krp_param[UBS_MODEXP_PAR_M].crp_p, mbits,
2230 me->me_M.dma_vaddr, normbits);
2231
2232 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_C, 0)) {
2233 err = ENOMEM;
2234 goto errout;
2235 }
2236 bzero(me->me_C.dma_vaddr, me->me_C.dma_size);
2237
2238 ebits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_E]);
2239 if (ebits > nbits) {
2240 err = E2BIG;
2241 goto errout;
2242 }
2243 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_E, 0)) {
2244 err = ENOMEM;
2245 goto errout;
2246 }
2247 ubsec_kshift_r(shiftbits,
2248 krp->krp_param[UBS_MODEXP_PAR_E].crp_p, ebits,
2249 me->me_E.dma_vaddr, normbits);
2250
2251 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_pktbuf),
2252 &me->me_epb, 0)) {
2253 err = ENOMEM;
2254 goto errout;
2255 }
2256 epb = (struct ubsec_pktbuf *)me->me_epb.dma_vaddr;
2257 epb->pb_addr = htole32(me->me_E.dma_paddr);
2258 epb->pb_next = 0;
2259 epb->pb_len = htole32(normbits / 8);
2260
2261 #ifdef UBSEC_DEBUG
2262 if (ubsec_debug) {
2263 printf("Epb ");
2264 ubsec_dump_pb(epb);
2265 }
2266 #endif
2267
2268 mcr->mcr_pkts = htole16(1);
2269 mcr->mcr_flags = 0;
2270 mcr->mcr_cmdctxp = htole32(me->me_q.q_ctx.dma_paddr);
2271 mcr->mcr_reserved = 0;
2272 mcr->mcr_pktlen = 0;
2273
2274 mcr->mcr_ipktbuf.pb_addr = htole32(me->me_M.dma_paddr);
2275 mcr->mcr_ipktbuf.pb_len = htole32(normbits / 8);
2276 mcr->mcr_ipktbuf.pb_next = htole32(me->me_epb.dma_paddr);
2277
2278 mcr->mcr_opktbuf.pb_addr = htole32(me->me_C.dma_paddr);
2279 mcr->mcr_opktbuf.pb_next = 0;
2280 mcr->mcr_opktbuf.pb_len = htole32(normbits / 8);
2281
2282 #ifdef DIAGNOSTIC
2283 /* Misaligned output buffer will hang the chip. */
2284 if ((letoh32(mcr->mcr_opktbuf.pb_addr) & 3) != 0)
2285 panic("%s: modexp invalid addr 0x%x\n",
2286 device_get_nameunit(sc->sc_dev),
2287 letoh32(mcr->mcr_opktbuf.pb_addr));
2288 if ((letoh32(mcr->mcr_opktbuf.pb_len) & 3) != 0)
2289 panic("%s: modexp invalid len 0x%x\n",
2290 device_get_nameunit(sc->sc_dev),
2291 letoh32(mcr->mcr_opktbuf.pb_len));
2292 #endif
2293
2294 ctx = (struct ubsec_ctx_modexp *)me->me_q.q_ctx.dma_vaddr;
2295 bzero(ctx, sizeof(*ctx));
2296 ubsec_kshift_r(shiftbits,
2297 krp->krp_param[UBS_MODEXP_PAR_N].crp_p, nbits,
2298 ctx->me_N, normbits);
2299 ctx->me_len = htole16((normbits / 8) + (4 * sizeof(u_int16_t)));
2300 ctx->me_op = htole16(UBS_CTXOP_MODEXP);
2301 ctx->me_E_len = htole16(nbits);
2302 ctx->me_N_len = htole16(nbits);
2303
2304 #ifdef UBSEC_DEBUG
2305 if (ubsec_debug) {
2306 ubsec_dump_mcr(mcr);
2307 ubsec_dump_ctx2((struct ubsec_ctx_keyop *)ctx);
2308 }
2309 #endif
2310
2311 /*
2312 * ubsec_feed2 will sync mcr and ctx, we just need to sync
2313 * everything else.
2314 */
2315 ubsec_dma_sync(&me->me_M, BUS_DMASYNC_PREWRITE);
2316 ubsec_dma_sync(&me->me_E, BUS_DMASYNC_PREWRITE);
2317 ubsec_dma_sync(&me->me_C, BUS_DMASYNC_PREREAD);
2318 ubsec_dma_sync(&me->me_epb, BUS_DMASYNC_PREWRITE);
2319
2320 /* Enqueue and we're done... */
2321 mtx_lock(&sc->sc_mcr2lock);
2322 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &me->me_q, q_next);
2323 ubsec_feed2(sc);
2324 ubsecstats.hst_modexp++;
2325 mtx_unlock(&sc->sc_mcr2lock);
2326
2327 return (0);
2328
2329 errout:
2330 if (me != NULL) {
2331 if (me->me_q.q_mcr.dma_map != NULL)
2332 ubsec_dma_free(sc, &me->me_q.q_mcr);
2333 if (me->me_q.q_ctx.dma_map != NULL) {
2334 bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size);
2335 ubsec_dma_free(sc, &me->me_q.q_ctx);
2336 }
2337 if (me->me_M.dma_map != NULL) {
2338 bzero(me->me_M.dma_vaddr, me->me_M.dma_size);
2339 ubsec_dma_free(sc, &me->me_M);
2340 }
2341 if (me->me_E.dma_map != NULL) {
2342 bzero(me->me_E.dma_vaddr, me->me_E.dma_size);
2343 ubsec_dma_free(sc, &me->me_E);
2344 }
2345 if (me->me_C.dma_map != NULL) {
2346 bzero(me->me_C.dma_vaddr, me->me_C.dma_size);
2347 ubsec_dma_free(sc, &me->me_C);
2348 }
2349 if (me->me_epb.dma_map != NULL)
2350 ubsec_dma_free(sc, &me->me_epb);
2351 free(me, M_DEVBUF);
2352 }
2353 krp->krp_status = err;
2354 crypto_kdone(krp);
2355 return (0);
2356 }
2357
2358 /*
2359 * Start computation of cr[C] = (cr[M] ^ cr[E]) mod cr[N] (hw normalization)
2360 */
2361 static int
2362 ubsec_kprocess_modexp_hw(struct ubsec_softc *sc, struct cryptkop *krp, int hint)
2363 {
2364 struct ubsec_q2_modexp *me;
2365 struct ubsec_mcr *mcr;
2366 struct ubsec_ctx_modexp *ctx;
2367 struct ubsec_pktbuf *epb;
2368 int err = 0;
2369 u_int nbits, normbits, mbits, shiftbits, ebits;
2370
2371 me = (struct ubsec_q2_modexp *)malloc(sizeof *me, M_DEVBUF, M_NOWAIT);
2372 if (me == NULL) {
2373 err = ENOMEM;
2374 goto errout;
2375 }
2376 bzero(me, sizeof *me);
2377 me->me_krp = krp;
2378 me->me_q.q_type = UBS_CTXOP_MODEXP;
2379
2380 nbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_N]);
2381 if (nbits <= 512)
2382 normbits = 512;
2383 else if (nbits <= 768)
2384 normbits = 768;
2385 else if (nbits <= 1024)
2386 normbits = 1024;
2387 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 1536)
2388 normbits = 1536;
2389 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 2048)
2390 normbits = 2048;
2391 else {
2392 err = E2BIG;
2393 goto errout;
2394 }
2395
2396 shiftbits = normbits - nbits;
2397
2398 /* XXX ??? */
2399 me->me_modbits = nbits;
2400 me->me_shiftbits = shiftbits;
2401 me->me_normbits = normbits;
2402
2403 /* Sanity check: result bits must be >= true modulus bits. */
2404 if (krp->krp_param[krp->krp_iparams].crp_nbits < nbits) {
2405 err = ERANGE;
2406 goto errout;
2407 }
2408
2409 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr),
2410 &me->me_q.q_mcr, 0)) {
2411 err = ENOMEM;
2412 goto errout;
2413 }
2414 mcr = (struct ubsec_mcr *)me->me_q.q_mcr.dma_vaddr;
2415
2416 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_modexp),
2417 &me->me_q.q_ctx, 0)) {
2418 err = ENOMEM;
2419 goto errout;
2420 }
2421
2422 mbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_M]);
2423 if (mbits > nbits) {
2424 err = E2BIG;
2425 goto errout;
2426 }
2427 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_M, 0)) {
2428 err = ENOMEM;
2429 goto errout;
2430 }
2431 bzero(me->me_M.dma_vaddr, normbits / 8);
2432 bcopy(krp->krp_param[UBS_MODEXP_PAR_M].crp_p,
2433 me->me_M.dma_vaddr, (mbits + 7) / 8);
2434
2435 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_C, 0)) {
2436 err = ENOMEM;
2437 goto errout;
2438 }
2439 bzero(me->me_C.dma_vaddr, me->me_C.dma_size);
2440
2441 ebits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_E]);
2442 if (ebits > nbits) {
2443 err = E2BIG;
2444 goto errout;
2445 }
2446 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_E, 0)) {
2447 err = ENOMEM;
2448 goto errout;
2449 }
2450 bzero(me->me_E.dma_vaddr, normbits / 8);
2451 bcopy(krp->krp_param[UBS_MODEXP_PAR_E].crp_p,
2452 me->me_E.dma_vaddr, (ebits + 7) / 8);
2453
2454 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_pktbuf),
2455 &me->me_epb, 0)) {
2456 err = ENOMEM;
2457 goto errout;
2458 }
2459 epb = (struct ubsec_pktbuf *)me->me_epb.dma_vaddr;
2460 epb->pb_addr = htole32(me->me_E.dma_paddr);
2461 epb->pb_next = 0;
2462 epb->pb_len = htole32((ebits + 7) / 8);
2463
2464 #ifdef UBSEC_DEBUG
2465 if (ubsec_debug) {
2466 printf("Epb ");
2467 ubsec_dump_pb(epb);
2468 }
2469 #endif
2470
2471 mcr->mcr_pkts = htole16(1);
2472 mcr->mcr_flags = 0;
2473 mcr->mcr_cmdctxp = htole32(me->me_q.q_ctx.dma_paddr);
2474 mcr->mcr_reserved = 0;
2475 mcr->mcr_pktlen = 0;
2476
2477 mcr->mcr_ipktbuf.pb_addr = htole32(me->me_M.dma_paddr);
2478 mcr->mcr_ipktbuf.pb_len = htole32(normbits / 8);
2479 mcr->mcr_ipktbuf.pb_next = htole32(me->me_epb.dma_paddr);
2480
2481 mcr->mcr_opktbuf.pb_addr = htole32(me->me_C.dma_paddr);
2482 mcr->mcr_opktbuf.pb_next = 0;
2483 mcr->mcr_opktbuf.pb_len = htole32(normbits / 8);
2484
2485 #ifdef DIAGNOSTIC
2486 /* Misaligned output buffer will hang the chip. */
2487 if ((letoh32(mcr->mcr_opktbuf.pb_addr) & 3) != 0)
2488 panic("%s: modexp invalid addr 0x%x\n",
2489 device_get_nameunit(sc->sc_dev),
2490 letoh32(mcr->mcr_opktbuf.pb_addr));
2491 if ((letoh32(mcr->mcr_opktbuf.pb_len) & 3) != 0)
2492 panic("%s: modexp invalid len 0x%x\n",
2493 device_get_nameunit(sc->sc_dev),
2494 letoh32(mcr->mcr_opktbuf.pb_len));
2495 #endif
2496
2497 ctx = (struct ubsec_ctx_modexp *)me->me_q.q_ctx.dma_vaddr;
2498 bzero(ctx, sizeof(*ctx));
2499 bcopy(krp->krp_param[UBS_MODEXP_PAR_N].crp_p, ctx->me_N,
2500 (nbits + 7) / 8);
2501 ctx->me_len = htole16((normbits / 8) + (4 * sizeof(u_int16_t)));
2502 ctx->me_op = htole16(UBS_CTXOP_MODEXP);
2503 ctx->me_E_len = htole16(ebits);
2504 ctx->me_N_len = htole16(nbits);
2505
2506 #ifdef UBSEC_DEBUG
2507 if (ubsec_debug) {
2508 ubsec_dump_mcr(mcr);
2509 ubsec_dump_ctx2((struct ubsec_ctx_keyop *)ctx);
2510 }
2511 #endif
2512
2513 /*
2514 * ubsec_feed2 will sync mcr and ctx, we just need to sync
2515 * everything else.
2516 */
2517 ubsec_dma_sync(&me->me_M, BUS_DMASYNC_PREWRITE);
2518 ubsec_dma_sync(&me->me_E, BUS_DMASYNC_PREWRITE);
2519 ubsec_dma_sync(&me->me_C, BUS_DMASYNC_PREREAD);
2520 ubsec_dma_sync(&me->me_epb, BUS_DMASYNC_PREWRITE);
2521
2522 /* Enqueue and we're done... */
2523 mtx_lock(&sc->sc_mcr2lock);
2524 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &me->me_q, q_next);
2525 ubsec_feed2(sc);
2526 mtx_unlock(&sc->sc_mcr2lock);
2527
2528 return (0);
2529
2530 errout:
2531 if (me != NULL) {
2532 if (me->me_q.q_mcr.dma_map != NULL)
2533 ubsec_dma_free(sc, &me->me_q.q_mcr);
2534 if (me->me_q.q_ctx.dma_map != NULL) {
2535 bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size);
2536 ubsec_dma_free(sc, &me->me_q.q_ctx);
2537 }
2538 if (me->me_M.dma_map != NULL) {
2539 bzero(me->me_M.dma_vaddr, me->me_M.dma_size);
2540 ubsec_dma_free(sc, &me->me_M);
2541 }
2542 if (me->me_E.dma_map != NULL) {
2543 bzero(me->me_E.dma_vaddr, me->me_E.dma_size);
2544 ubsec_dma_free(sc, &me->me_E);
2545 }
2546 if (me->me_C.dma_map != NULL) {
2547 bzero(me->me_C.dma_vaddr, me->me_C.dma_size);
2548 ubsec_dma_free(sc, &me->me_C);
2549 }
2550 if (me->me_epb.dma_map != NULL)
2551 ubsec_dma_free(sc, &me->me_epb);
2552 free(me, M_DEVBUF);
2553 }
2554 krp->krp_status = err;
2555 crypto_kdone(krp);
2556 return (0);
2557 }
2558
2559 static int
2560 ubsec_kprocess_rsapriv(struct ubsec_softc *sc, struct cryptkop *krp, int hint)
2561 {
2562 struct ubsec_q2_rsapriv *rp = NULL;
2563 struct ubsec_mcr *mcr;
2564 struct ubsec_ctx_rsapriv *ctx;
2565 int err = 0;
2566 u_int padlen, msglen;
2567
2568 msglen = ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_P]);
2569 padlen = ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_Q]);
2570 if (msglen > padlen)
2571 padlen = msglen;
2572
2573 if (padlen <= 256)
2574 padlen = 256;
2575 else if (padlen <= 384)
2576 padlen = 384;
2577 else if (padlen <= 512)
2578 padlen = 512;
2579 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && padlen <= 768)
2580 padlen = 768;
2581 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && padlen <= 1024)
2582 padlen = 1024;
2583 else {
2584 err = E2BIG;
2585 goto errout;
2586 }
2587
2588 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_DP]) > padlen) {
2589 err = E2BIG;
2590 goto errout;
2591 }
2592
2593 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_DQ]) > padlen) {
2594 err = E2BIG;
2595 goto errout;
2596 }
2597
2598 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_PINV]) > padlen) {
2599 err = E2BIG;
2600 goto errout;
2601 }
2602
2603 rp = (struct ubsec_q2_rsapriv *)malloc(sizeof *rp, M_DEVBUF, M_NOWAIT);
2604 if (rp == NULL)
2605 return (ENOMEM);
2606 bzero(rp, sizeof *rp);
2607 rp->rpr_krp = krp;
2608 rp->rpr_q.q_type = UBS_CTXOP_RSAPRIV;
2609
2610 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr),
2611 &rp->rpr_q.q_mcr, 0)) {
2612 err = ENOMEM;
2613 goto errout;
2614 }
2615 mcr = (struct ubsec_mcr *)rp->rpr_q.q_mcr.dma_vaddr;
2616
2617 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_rsapriv),
2618 &rp->rpr_q.q_ctx, 0)) {
2619 err = ENOMEM;
2620 goto errout;
2621 }
2622 ctx = (struct ubsec_ctx_rsapriv *)rp->rpr_q.q_ctx.dma_vaddr;
2623 bzero(ctx, sizeof *ctx);
2624
2625 /* Copy in p */
2626 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_P].crp_p,
2627 &ctx->rpr_buf[0 * (padlen / 8)],
2628 (krp->krp_param[UBS_RSAPRIV_PAR_P].crp_nbits + 7) / 8);
2629
2630 /* Copy in q */
2631 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_Q].crp_p,
2632 &ctx->rpr_buf[1 * (padlen / 8)],
2633 (krp->krp_param[UBS_RSAPRIV_PAR_Q].crp_nbits + 7) / 8);
2634
2635 /* Copy in dp */
2636 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_DP].crp_p,
2637 &ctx->rpr_buf[2 * (padlen / 8)],
2638 (krp->krp_param[UBS_RSAPRIV_PAR_DP].crp_nbits + 7) / 8);
2639
2640 /* Copy in dq */
2641 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_DQ].crp_p,
2642 &ctx->rpr_buf[3 * (padlen / 8)],
2643 (krp->krp_param[UBS_RSAPRIV_PAR_DQ].crp_nbits + 7) / 8);
2644
2645 /* Copy in pinv */
2646 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_PINV].crp_p,
2647 &ctx->rpr_buf[4 * (padlen / 8)],
2648 (krp->krp_param[UBS_RSAPRIV_PAR_PINV].crp_nbits + 7) / 8);
2649
2650 msglen = padlen * 2;
2651
2652 /* Copy in input message (aligned buffer/length). */
2653 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_MSGIN]) > msglen) {
2654 /* Is this likely? */
2655 err = E2BIG;
2656 goto errout;
2657 }
2658 if (ubsec_dma_malloc(sc, (msglen + 7) / 8, &rp->rpr_msgin, 0)) {
2659 err = ENOMEM;
2660 goto errout;
2661 }
2662 bzero(rp->rpr_msgin.dma_vaddr, (msglen + 7) / 8);
2663 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_MSGIN].crp_p,
2664 rp->rpr_msgin.dma_vaddr,
2665 (krp->krp_param[UBS_RSAPRIV_PAR_MSGIN].crp_nbits + 7) / 8);
2666
2667 /* Prepare space for output message (aligned buffer/length). */
2668 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT]) < msglen) {
2669 /* Is this likely? */
2670 err = E2BIG;
2671 goto errout;
2672 }
2673 if (ubsec_dma_malloc(sc, (msglen + 7) / 8, &rp->rpr_msgout, 0)) {
2674 err = ENOMEM;
2675 goto errout;
2676 }
2677 bzero(rp->rpr_msgout.dma_vaddr, (msglen + 7) / 8);
2678
2679 mcr->mcr_pkts = htole16(1);
2680 mcr->mcr_flags = 0;
2681 mcr->mcr_cmdctxp = htole32(rp->rpr_q.q_ctx.dma_paddr);
2682 mcr->mcr_ipktbuf.pb_addr = htole32(rp->rpr_msgin.dma_paddr);
2683 mcr->mcr_ipktbuf.pb_next = 0;
2684 mcr->mcr_ipktbuf.pb_len = htole32(rp->rpr_msgin.dma_size);
2685 mcr->mcr_reserved = 0;
2686 mcr->mcr_pktlen = htole16(msglen);
2687 mcr->mcr_opktbuf.pb_addr = htole32(rp->rpr_msgout.dma_paddr);
2688 mcr->mcr_opktbuf.pb_next = 0;
2689 mcr->mcr_opktbuf.pb_len = htole32(rp->rpr_msgout.dma_size);
2690
2691 #ifdef DIAGNOSTIC
2692 if (rp->rpr_msgin.dma_paddr & 3 || rp->rpr_msgin.dma_size & 3) {
2693 panic("%s: rsapriv: invalid msgin %x(0x%jx)",
2694 device_get_nameunit(sc->sc_dev),
2695 rp->rpr_msgin.dma_paddr, (uintmax_t)rp->rpr_msgin.dma_size);
2696 }
2697 if (rp->rpr_msgout.dma_paddr & 3 || rp->rpr_msgout.dma_size & 3) {
2698 panic("%s: rsapriv: invalid msgout %x(0x%jx)",
2699 device_get_nameunit(sc->sc_dev),
2700 rp->rpr_msgout.dma_paddr, (uintmax_t)rp->rpr_msgout.dma_size);
2701 }
2702 #endif
2703
2704 ctx->rpr_len = (sizeof(u_int16_t) * 4) + (5 * (padlen / 8));
2705 ctx->rpr_op = htole16(UBS_CTXOP_RSAPRIV);
2706 ctx->rpr_q_len = htole16(padlen);
2707 ctx->rpr_p_len = htole16(padlen);
2708
2709 /*
2710 * ubsec_feed2 will sync mcr and ctx, we just need to sync
2711 * everything else.
2712 */
2713 ubsec_dma_sync(&rp->rpr_msgin, BUS_DMASYNC_PREWRITE);
2714 ubsec_dma_sync(&rp->rpr_msgout, BUS_DMASYNC_PREREAD);
2715
2716 /* Enqueue and we're done... */
2717 mtx_lock(&sc->sc_mcr2lock);
2718 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &rp->rpr_q, q_next);
2719 ubsec_feed2(sc);
2720 ubsecstats.hst_modexpcrt++;
2721 mtx_unlock(&sc->sc_mcr2lock);
2722 return (0);
2723
2724 errout:
2725 if (rp != NULL) {
2726 if (rp->rpr_q.q_mcr.dma_map != NULL)
2727 ubsec_dma_free(sc, &rp->rpr_q.q_mcr);
2728 if (rp->rpr_msgin.dma_map != NULL) {
2729 bzero(rp->rpr_msgin.dma_vaddr, rp->rpr_msgin.dma_size);
2730 ubsec_dma_free(sc, &rp->rpr_msgin);
2731 }
2732 if (rp->rpr_msgout.dma_map != NULL) {
2733 bzero(rp->rpr_msgout.dma_vaddr, rp->rpr_msgout.dma_size);
2734 ubsec_dma_free(sc, &rp->rpr_msgout);
2735 }
2736 free(rp, M_DEVBUF);
2737 }
2738 krp->krp_status = err;
2739 crypto_kdone(krp);
2740 return (0);
2741 }
2742
2743 #ifdef UBSEC_DEBUG
2744 static void
2745 ubsec_dump_pb(volatile struct ubsec_pktbuf *pb)
2746 {
2747 printf("addr 0x%x (0x%x) next 0x%x\n",
2748 pb->pb_addr, pb->pb_len, pb->pb_next);
2749 }
2750
2751 static void
2752 ubsec_dump_ctx2(struct ubsec_ctx_keyop *c)
2753 {
2754 printf("CTX (0x%x):\n", c->ctx_len);
2755 switch (letoh16(c->ctx_op)) {
2756 case UBS_CTXOP_RNGBYPASS:
2757 case UBS_CTXOP_RNGSHA1:
2758 break;
2759 case UBS_CTXOP_MODEXP:
2760 {
2761 struct ubsec_ctx_modexp *cx = (void *)c;
2762 int i, len;
2763
2764 printf(" Elen %u, Nlen %u\n",
2765 letoh16(cx->me_E_len), letoh16(cx->me_N_len));
2766 len = (cx->me_N_len + 7)/8;
2767 for (i = 0; i < len; i++)
2768 printf("%s%02x", (i == 0) ? " N: " : ":", cx->me_N[i]);
2769 printf("\n");
2770 break;
2771 }
2772 default:
2773 printf("unknown context: %x\n", c->ctx_op);
2774 }
2775 printf("END CTX\n");
2776 }
2777
2778 static void
2779 ubsec_dump_mcr(struct ubsec_mcr *mcr)
2780 {
2781 volatile struct ubsec_mcr_add *ma;
2782 int i;
2783
2784 printf("MCR:\n");
2785 printf(" pkts: %u, flags 0x%x\n",
2786 letoh16(mcr->mcr_pkts), letoh16(mcr->mcr_flags));
2787 ma = (volatile struct ubsec_mcr_add *)&mcr->mcr_cmdctxp;
2788 for (i = 0; i < letoh16(mcr->mcr_pkts); i++) {
2789 printf(" %d: ctx 0x%x len 0x%x rsvd 0x%x\n", i,
2790 letoh32(ma->mcr_cmdctxp), letoh16(ma->mcr_pktlen),
2791 letoh16(ma->mcr_reserved));
2792 printf(" %d: ipkt ", i);
2793 ubsec_dump_pb(&ma->mcr_ipktbuf);
2794 printf(" %d: opkt ", i);
2795 ubsec_dump_pb(&ma->mcr_opktbuf);
2796 ma++;
2797 }
2798 printf("END MCR\n");
2799 }
2800 #endif /* UBSEC_DEBUG */
2801
2802 /*
2803 * Return the number of significant bits of a big number.
2804 */
2805 static int
2806 ubsec_ksigbits(struct crparam *cr)
2807 {
2808 u_int plen = (cr->crp_nbits + 7) / 8;
2809 int i, sig = plen * 8;
2810 u_int8_t c, *p = cr->crp_p;
2811
2812 for (i = plen - 1; i >= 0; i--) {
2813 c = p[i];
2814 if (c != 0) {
2815 while ((c & 0x80) == 0) {
2816 sig--;
2817 c <<= 1;
2818 }
2819 break;
2820 }
2821 sig -= 8;
2822 }
2823 return (sig);
2824 }
2825
2826 static void
2827 ubsec_kshift_r(
2828 u_int shiftbits,
2829 u_int8_t *src, u_int srcbits,
2830 u_int8_t *dst, u_int dstbits)
2831 {
2832 u_int slen, dlen;
2833 int i, si, di, n;
2834
2835 slen = (srcbits + 7) / 8;
2836 dlen = (dstbits + 7) / 8;
2837
2838 for (i = 0; i < slen; i++)
2839 dst[i] = src[i];
2840 for (i = 0; i < dlen - slen; i++)
2841 dst[slen + i] = 0;
2842
2843 n = shiftbits / 8;
2844 if (n != 0) {
2845 si = dlen - n - 1;
2846 di = dlen - 1;
2847 while (si >= 0)
2848 dst[di--] = dst[si--];
2849 while (di >= 0)
2850 dst[di--] = 0;
2851 }
2852
2853 n = shiftbits % 8;
2854 if (n != 0) {
2855 for (i = dlen - 1; i > 0; i--)
2856 dst[i] = (dst[i] << n) |
2857 (dst[i - 1] >> (8 - n));
2858 dst[0] = dst[0] << n;
2859 }
2860 }
2861
2862 static void
2863 ubsec_kshift_l(
2864 u_int shiftbits,
2865 u_int8_t *src, u_int srcbits,
2866 u_int8_t *dst, u_int dstbits)
2867 {
2868 int slen, dlen, i, n;
2869
2870 slen = (srcbits + 7) / 8;
2871 dlen = (dstbits + 7) / 8;
2872
2873 n = shiftbits / 8;
2874 for (i = 0; i < slen; i++)
2875 dst[i] = src[i + n];
2876 for (i = 0; i < dlen - slen; i++)
2877 dst[slen + i] = 0;
2878
2879 n = shiftbits % 8;
2880 if (n != 0) {
2881 for (i = 0; i < (dlen - 1); i++)
2882 dst[i] = (dst[i] >> n) | (dst[i + 1] << (8 - n));
2883 dst[dlen - 1] = dst[dlen - 1] >> n;
2884 }
2885 }
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