ubsec.c revision 158851
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: head/sys/dev/ubsec/ubsec.c 158851 2006-05-23 09:02:14Z pjd $"); 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 77#include <dev/pci/pcivar.h> 78#include <dev/pci/pcireg.h> 79 80/* grr, #defines for gratuitous incompatibility in queue.h */ 81#define SIMPLEQ_HEAD STAILQ_HEAD 82#define SIMPLEQ_ENTRY STAILQ_ENTRY 83#define SIMPLEQ_INIT STAILQ_INIT 84#define SIMPLEQ_INSERT_TAIL STAILQ_INSERT_TAIL 85#define SIMPLEQ_EMPTY STAILQ_EMPTY 86#define SIMPLEQ_FIRST STAILQ_FIRST 87#define SIMPLEQ_REMOVE_HEAD STAILQ_REMOVE_HEAD_UNTIL 88#define SIMPLEQ_FOREACH STAILQ_FOREACH 89/* ditto for endian.h */ 90#define letoh16(x) le16toh(x) 91#define letoh32(x) le32toh(x) 92 93#ifdef UBSEC_RNDTEST 94#include <dev/rndtest/rndtest.h> 95#endif 96#include <dev/ubsec/ubsecreg.h> 97#include <dev/ubsec/ubsecvar.h> 98 99/* 100 * Prototypes and count for the pci_device structure 101 */ 102static int ubsec_probe(device_t); 103static int ubsec_attach(device_t); 104static int ubsec_detach(device_t); 105static int ubsec_suspend(device_t); 106static int ubsec_resume(device_t); 107static void ubsec_shutdown(device_t); 108 109static device_method_t ubsec_methods[] = { 110 /* Device interface */ 111 DEVMETHOD(device_probe, ubsec_probe), 112 DEVMETHOD(device_attach, ubsec_attach), 113 DEVMETHOD(device_detach, ubsec_detach), 114 DEVMETHOD(device_suspend, ubsec_suspend), 115 DEVMETHOD(device_resume, ubsec_resume), 116 DEVMETHOD(device_shutdown, ubsec_shutdown), 117 118 /* bus interface */ 119 DEVMETHOD(bus_print_child, bus_generic_print_child), 120 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 121 122 { 0, 0 } 123}; 124static driver_t ubsec_driver = { 125 "ubsec", 126 ubsec_methods, 127 sizeof (struct ubsec_softc) 128}; 129static devclass_t ubsec_devclass; 130 131DRIVER_MODULE(ubsec, pci, ubsec_driver, ubsec_devclass, 0, 0); 132MODULE_DEPEND(ubsec, crypto, 1, 1, 1); 133#ifdef UBSEC_RNDTEST 134MODULE_DEPEND(ubsec, rndtest, 1, 1, 1); 135#endif 136 137static void ubsec_intr(void *); 138static int ubsec_newsession(void *, u_int32_t *, struct cryptoini *); 139static int ubsec_freesession(void *, u_int64_t); 140static int ubsec_process(void *, struct cryptop *, int); 141static void ubsec_callback(struct ubsec_softc *, struct ubsec_q *); 142static void ubsec_feed(struct ubsec_softc *); 143static void ubsec_mcopy(struct mbuf *, struct mbuf *, int, int); 144static void ubsec_callback2(struct ubsec_softc *, struct ubsec_q2 *); 145static int ubsec_feed2(struct ubsec_softc *); 146static void ubsec_rng(void *); 147static int ubsec_dma_malloc(struct ubsec_softc *, bus_size_t, 148 struct ubsec_dma_alloc *, int); 149#define ubsec_dma_sync(_dma, _flags) \ 150 bus_dmamap_sync((_dma)->dma_tag, (_dma)->dma_map, (_flags)) 151static void ubsec_dma_free(struct ubsec_softc *, struct ubsec_dma_alloc *); 152static int ubsec_dmamap_aligned(struct ubsec_operand *op); 153 154static void ubsec_reset_board(struct ubsec_softc *sc); 155static void ubsec_init_board(struct ubsec_softc *sc); 156static void ubsec_init_pciregs(device_t dev); 157static void ubsec_totalreset(struct ubsec_softc *sc); 158 159static int ubsec_free_q(struct ubsec_softc *sc, struct ubsec_q *q); 160 161static int ubsec_kprocess(void*, struct cryptkop *, int); 162static int ubsec_kprocess_modexp_hw(struct ubsec_softc *, struct cryptkop *, int); 163static int ubsec_kprocess_modexp_sw(struct ubsec_softc *, struct cryptkop *, int); 164static int ubsec_kprocess_rsapriv(struct ubsec_softc *, struct cryptkop *, int); 165static void ubsec_kfree(struct ubsec_softc *, struct ubsec_q2 *); 166static int ubsec_ksigbits(struct crparam *); 167static void ubsec_kshift_r(u_int, u_int8_t *, u_int, u_int8_t *, u_int); 168static void ubsec_kshift_l(u_int, u_int8_t *, u_int, u_int8_t *, u_int); 169 170SYSCTL_NODE(_hw, OID_AUTO, ubsec, CTLFLAG_RD, 0, "Broadcom driver parameters"); 171 172#ifdef UBSEC_DEBUG 173static void ubsec_dump_pb(volatile struct ubsec_pktbuf *); 174static void ubsec_dump_mcr(struct ubsec_mcr *); 175static void ubsec_dump_ctx2(struct ubsec_ctx_keyop *); 176 177static int ubsec_debug = 0; 178SYSCTL_INT(_hw_ubsec, OID_AUTO, debug, CTLFLAG_RW, &ubsec_debug, 179 0, "control debugging msgs"); 180#endif 181 182#define READ_REG(sc,r) \ 183 bus_space_read_4((sc)->sc_st, (sc)->sc_sh, (r)) 184 185#define WRITE_REG(sc,reg,val) \ 186 bus_space_write_4((sc)->sc_st, (sc)->sc_sh, reg, val) 187 188#define SWAP32(x) (x) = htole32(ntohl((x))) 189#define HTOLE32(x) (x) = htole32(x) 190 191struct ubsec_stats ubsecstats; 192SYSCTL_STRUCT(_hw_ubsec, OID_AUTO, stats, CTLFLAG_RD, &ubsecstats, 193 ubsec_stats, "driver statistics"); 194 195static int 196ubsec_probe(device_t dev) 197{ 198 if (pci_get_vendor(dev) == PCI_VENDOR_SUN && 199 (pci_get_device(dev) == PCI_PRODUCT_SUN_5821 || 200 pci_get_device(dev) == PCI_PRODUCT_SUN_SCA1K)) 201 return (BUS_PROBE_DEFAULT); 202 if (pci_get_vendor(dev) == PCI_VENDOR_BLUESTEEL && 203 (pci_get_device(dev) == PCI_PRODUCT_BLUESTEEL_5501 || 204 pci_get_device(dev) == PCI_PRODUCT_BLUESTEEL_5601)) 205 return (BUS_PROBE_DEFAULT); 206 if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM && 207 (pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5801 || 208 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5802 || 209 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5805 || 210 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5820 || 211 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5821 || 212 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5822 || 213 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5823 214 )) 215 return (BUS_PROBE_DEFAULT); 216 return (ENXIO); 217} 218 219static const char* 220ubsec_partname(struct ubsec_softc *sc) 221{ 222 /* XXX sprintf numbers when not decoded */ 223 switch (pci_get_vendor(sc->sc_dev)) { 224 case PCI_VENDOR_BROADCOM: 225 switch (pci_get_device(sc->sc_dev)) { 226 case PCI_PRODUCT_BROADCOM_5801: return "Broadcom 5801"; 227 case PCI_PRODUCT_BROADCOM_5802: return "Broadcom 5802"; 228 case PCI_PRODUCT_BROADCOM_5805: return "Broadcom 5805"; 229 case PCI_PRODUCT_BROADCOM_5820: return "Broadcom 5820"; 230 case PCI_PRODUCT_BROADCOM_5821: return "Broadcom 5821"; 231 case PCI_PRODUCT_BROADCOM_5822: return "Broadcom 5822"; 232 case PCI_PRODUCT_BROADCOM_5823: return "Broadcom 5823"; 233 } 234 return "Broadcom unknown-part"; 235 case PCI_VENDOR_BLUESTEEL: 236 switch (pci_get_device(sc->sc_dev)) { 237 case PCI_PRODUCT_BLUESTEEL_5601: return "Bluesteel 5601"; 238 } 239 return "Bluesteel unknown-part"; 240 case PCI_VENDOR_SUN: 241 switch (pci_get_device(sc->sc_dev)) { 242 case PCI_PRODUCT_SUN_5821: return "Sun Crypto 5821"; 243 case PCI_PRODUCT_SUN_SCA1K: return "Sun Crypto 1K"; 244 } 245 return "Sun unknown-part"; 246 } 247 return "Unknown-vendor unknown-part"; 248} 249 250static void 251default_harvest(struct rndtest_state *rsp, void *buf, u_int count) 252{ 253 random_harvest(buf, count, count*NBBY, 0, RANDOM_PURE); 254} 255 256static int 257ubsec_attach(device_t dev) 258{ 259 struct ubsec_softc *sc = device_get_softc(dev); 260 struct ubsec_dma *dmap; 261 u_int32_t cmd, i; 262 int rid; 263 264 bzero(sc, sizeof (*sc)); 265 sc->sc_dev = dev; 266 267 SIMPLEQ_INIT(&sc->sc_queue); 268 SIMPLEQ_INIT(&sc->sc_qchip); 269 SIMPLEQ_INIT(&sc->sc_queue2); 270 SIMPLEQ_INIT(&sc->sc_qchip2); 271 SIMPLEQ_INIT(&sc->sc_q2free); 272 273 /* XXX handle power management */ 274 275 sc->sc_statmask = BS_STAT_MCR1_DONE | BS_STAT_DMAERR; 276 277 if (pci_get_vendor(dev) == PCI_VENDOR_BLUESTEEL && 278 pci_get_device(dev) == PCI_PRODUCT_BLUESTEEL_5601) 279 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG; 280 281 if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM && 282 (pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5802 || 283 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5805)) 284 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG; 285 286 if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM && 287 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5820) 288 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG | 289 UBS_FLAGS_LONGCTX | UBS_FLAGS_HWNORM | UBS_FLAGS_BIGKEY; 290 291 if ((pci_get_vendor(dev) == PCI_VENDOR_BROADCOM && 292 (pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5821 || 293 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5822 || 294 pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5823)) || 295 (pci_get_vendor(dev) == PCI_VENDOR_SUN && 296 (pci_get_device(dev) == PCI_PRODUCT_SUN_SCA1K || 297 pci_get_device(dev) == PCI_PRODUCT_SUN_5821))) { 298 /* NB: the 5821/5822 defines some additional status bits */ 299 sc->sc_statmask |= BS_STAT_MCR1_ALLEMPTY | 300 BS_STAT_MCR2_ALLEMPTY; 301 sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG | 302 UBS_FLAGS_LONGCTX | UBS_FLAGS_HWNORM | UBS_FLAGS_BIGKEY; 303 } 304 305 cmd = pci_read_config(dev, PCIR_COMMAND, 4); 306 cmd |= PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN; 307 pci_write_config(dev, PCIR_COMMAND, cmd, 4); 308 cmd = pci_read_config(dev, PCIR_COMMAND, 4); 309 310 if (!(cmd & PCIM_CMD_MEMEN)) { 311 device_printf(dev, "failed to enable memory mapping\n"); 312 goto bad; 313 } 314 315 if (!(cmd & PCIM_CMD_BUSMASTEREN)) { 316 device_printf(dev, "failed to enable bus mastering\n"); 317 goto bad; 318 } 319 320 /* 321 * Setup memory-mapping of PCI registers. 322 */ 323 rid = BS_BAR; 324 sc->sc_sr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 325 RF_ACTIVE); 326 if (sc->sc_sr == NULL) { 327 device_printf(dev, "cannot map register space\n"); 328 goto bad; 329 } 330 sc->sc_st = rman_get_bustag(sc->sc_sr); 331 sc->sc_sh = rman_get_bushandle(sc->sc_sr); 332 333 /* 334 * Arrange interrupt line. 335 */ 336 rid = 0; 337 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 338 RF_SHAREABLE|RF_ACTIVE); 339 if (sc->sc_irq == NULL) { 340 device_printf(dev, "could not map interrupt\n"); 341 goto bad1; 342 } 343 /* 344 * NB: Network code assumes we are blocked with splimp() 345 * so make sure the IRQ is mapped appropriately. 346 */ 347 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_NET | INTR_MPSAFE, 348 ubsec_intr, sc, &sc->sc_ih)) { 349 device_printf(dev, "could not establish interrupt\n"); 350 goto bad2; 351 } 352 353 sc->sc_cid = crypto_get_driverid(0); 354 if (sc->sc_cid < 0) { 355 device_printf(dev, "could not get crypto driver id\n"); 356 goto bad3; 357 } 358 359 /* 360 * Setup DMA descriptor area. 361 */ 362 if (bus_dma_tag_create(NULL, /* parent */ 363 1, 0, /* alignment, bounds */ 364 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 365 BUS_SPACE_MAXADDR, /* highaddr */ 366 NULL, NULL, /* filter, filterarg */ 367 0x3ffff, /* maxsize */ 368 UBS_MAX_SCATTER, /* nsegments */ 369 0xffff, /* maxsegsize */ 370 BUS_DMA_ALLOCNOW, /* flags */ 371 NULL, NULL, /* lockfunc, lockarg */ 372 &sc->sc_dmat)) { 373 device_printf(dev, "cannot allocate DMA tag\n"); 374 goto bad4; 375 } 376 SIMPLEQ_INIT(&sc->sc_freequeue); 377 dmap = sc->sc_dmaa; 378 for (i = 0; i < UBS_MAX_NQUEUE; i++, dmap++) { 379 struct ubsec_q *q; 380 381 q = (struct ubsec_q *)malloc(sizeof(struct ubsec_q), 382 M_DEVBUF, M_NOWAIT); 383 if (q == NULL) { 384 device_printf(dev, "cannot allocate queue buffers\n"); 385 break; 386 } 387 388 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_dmachunk), 389 &dmap->d_alloc, 0)) { 390 device_printf(dev, "cannot allocate dma buffers\n"); 391 free(q, M_DEVBUF); 392 break; 393 } 394 dmap->d_dma = (struct ubsec_dmachunk *)dmap->d_alloc.dma_vaddr; 395 396 q->q_dma = dmap; 397 sc->sc_queuea[i] = q; 398 399 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next); 400 } 401 mtx_init(&sc->sc_mcr1lock, device_get_nameunit(dev), 402 "mcr1 operations", MTX_DEF); 403 mtx_init(&sc->sc_freeqlock, device_get_nameunit(dev), 404 "mcr1 free q", MTX_DEF); 405 406 device_printf(sc->sc_dev, "%s\n", ubsec_partname(sc)); 407 408 crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0, 409 ubsec_newsession, ubsec_freesession, ubsec_process, sc); 410 crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0, 411 ubsec_newsession, ubsec_freesession, ubsec_process, sc); 412 crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0, 413 ubsec_newsession, ubsec_freesession, ubsec_process, sc); 414 crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0, 415 ubsec_newsession, ubsec_freesession, ubsec_process, sc); 416 417 /* 418 * Reset Broadcom chip 419 */ 420 ubsec_reset_board(sc); 421 422 /* 423 * Init Broadcom specific PCI settings 424 */ 425 ubsec_init_pciregs(dev); 426 427 /* 428 * Init Broadcom chip 429 */ 430 ubsec_init_board(sc); 431 432#ifndef UBSEC_NO_RNG 433 if (sc->sc_flags & UBS_FLAGS_RNG) { 434 sc->sc_statmask |= BS_STAT_MCR2_DONE; 435#ifdef UBSEC_RNDTEST 436 sc->sc_rndtest = rndtest_attach(dev); 437 if (sc->sc_rndtest) 438 sc->sc_harvest = rndtest_harvest; 439 else 440 sc->sc_harvest = default_harvest; 441#else 442 sc->sc_harvest = default_harvest; 443#endif 444 445 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr), 446 &sc->sc_rng.rng_q.q_mcr, 0)) 447 goto skip_rng; 448 449 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_rngbypass), 450 &sc->sc_rng.rng_q.q_ctx, 0)) { 451 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_mcr); 452 goto skip_rng; 453 } 454 455 if (ubsec_dma_malloc(sc, sizeof(u_int32_t) * 456 UBSEC_RNG_BUFSIZ, &sc->sc_rng.rng_buf, 0)) { 457 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_ctx); 458 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_mcr); 459 goto skip_rng; 460 } 461 462 if (hz >= 100) 463 sc->sc_rnghz = hz / 100; 464 else 465 sc->sc_rnghz = 1; 466 callout_init(&sc->sc_rngto, CALLOUT_MPSAFE); 467 callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc); 468skip_rng: 469 ; 470 } 471#endif /* UBSEC_NO_RNG */ 472 mtx_init(&sc->sc_mcr2lock, device_get_nameunit(dev), 473 "mcr2 operations", MTX_DEF); 474 475 if (sc->sc_flags & UBS_FLAGS_KEY) { 476 sc->sc_statmask |= BS_STAT_MCR2_DONE; 477 478 crypto_kregister(sc->sc_cid, CRK_MOD_EXP, 0, 479 ubsec_kprocess, sc); 480#if 0 481 crypto_kregister(sc->sc_cid, CRK_MOD_EXP_CRT, 0, 482 ubsec_kprocess, sc); 483#endif 484 } 485 return (0); 486bad4: 487 crypto_unregister_all(sc->sc_cid); 488bad3: 489 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); 490bad2: 491 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq); 492bad1: 493 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_sr); 494bad: 495 return (ENXIO); 496} 497 498/* 499 * Detach a device that successfully probed. 500 */ 501static int 502ubsec_detach(device_t dev) 503{ 504 struct ubsec_softc *sc = device_get_softc(dev); 505 506 /* XXX wait/abort active ops */ 507 508 /* disable interrupts */ 509 WRITE_REG(sc, BS_CTRL, READ_REG(sc, BS_CTRL) &~ 510 (BS_CTRL_MCR2INT | BS_CTRL_MCR1INT | BS_CTRL_DMAERR)); 511 512 callout_stop(&sc->sc_rngto); 513 514 crypto_unregister_all(sc->sc_cid); 515 516#ifdef UBSEC_RNDTEST 517 if (sc->sc_rndtest) 518 rndtest_detach(sc->sc_rndtest); 519#endif 520 521 while (!SIMPLEQ_EMPTY(&sc->sc_freequeue)) { 522 struct ubsec_q *q; 523 524 q = SIMPLEQ_FIRST(&sc->sc_freequeue); 525 SIMPLEQ_REMOVE_HEAD(&sc->sc_freequeue, q, q_next); 526 ubsec_dma_free(sc, &q->q_dma->d_alloc); 527 free(q, M_DEVBUF); 528 } 529 mtx_destroy(&sc->sc_mcr1lock); 530#ifndef UBSEC_NO_RNG 531 if (sc->sc_flags & UBS_FLAGS_RNG) { 532 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_mcr); 533 ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_ctx); 534 ubsec_dma_free(sc, &sc->sc_rng.rng_buf); 535 } 536#endif /* UBSEC_NO_RNG */ 537 mtx_destroy(&sc->sc_mcr2lock); 538 539 bus_generic_detach(dev); 540 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); 541 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq); 542 543 bus_dma_tag_destroy(sc->sc_dmat); 544 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_sr); 545 546 return (0); 547} 548 549/* 550 * Stop all chip i/o so that the kernel's probe routines don't 551 * get confused by errant DMAs when rebooting. 552 */ 553static void 554ubsec_shutdown(device_t dev) 555{ 556#ifdef notyet 557 ubsec_stop(device_get_softc(dev)); 558#endif 559} 560 561/* 562 * Device suspend routine. 563 */ 564static int 565ubsec_suspend(device_t dev) 566{ 567 struct ubsec_softc *sc = device_get_softc(dev); 568 569#ifdef notyet 570 /* XXX stop the device and save PCI settings */ 571#endif 572 sc->sc_suspended = 1; 573 574 return (0); 575} 576 577static int 578ubsec_resume(device_t dev) 579{ 580 struct ubsec_softc *sc = device_get_softc(dev); 581 582#ifdef notyet 583 /* XXX retore PCI settings and start the device */ 584#endif 585 sc->sc_suspended = 0; 586 return (0); 587} 588 589/* 590 * UBSEC Interrupt routine 591 */ 592static void 593ubsec_intr(void *arg) 594{ 595 struct ubsec_softc *sc = arg; 596 volatile u_int32_t stat; 597 struct ubsec_q *q; 598 struct ubsec_dma *dmap; 599 int npkts = 0, i; 600 601 stat = READ_REG(sc, BS_STAT); 602 stat &= sc->sc_statmask; 603 if (stat == 0) 604 return; 605 606 WRITE_REG(sc, BS_STAT, stat); /* IACK */ 607 608 /* 609 * Check to see if we have any packets waiting for us 610 */ 611 if ((stat & BS_STAT_MCR1_DONE)) { 612 mtx_lock(&sc->sc_mcr1lock); 613 while (!SIMPLEQ_EMPTY(&sc->sc_qchip)) { 614 q = SIMPLEQ_FIRST(&sc->sc_qchip); 615 dmap = q->q_dma; 616 617 if ((dmap->d_dma->d_mcr.mcr_flags & htole16(UBS_MCR_DONE)) == 0) 618 break; 619 620 SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q, q_next); 621 622 npkts = q->q_nstacked_mcrs; 623 sc->sc_nqchip -= 1+npkts; 624 /* 625 * search for further sc_qchip ubsec_q's that share 626 * the same MCR, and complete them too, they must be 627 * at the top. 628 */ 629 for (i = 0; i < npkts; i++) { 630 if(q->q_stacked_mcr[i]) { 631 ubsec_callback(sc, q->q_stacked_mcr[i]); 632 } else { 633 break; 634 } 635 } 636 ubsec_callback(sc, q); 637 } 638 /* 639 * Don't send any more packet to chip if there has been 640 * a DMAERR. 641 */ 642 if (!(stat & BS_STAT_DMAERR)) 643 ubsec_feed(sc); 644 mtx_unlock(&sc->sc_mcr1lock); 645 } 646 647 /* 648 * Check to see if we have any key setups/rng's waiting for us 649 */ 650 if ((sc->sc_flags & (UBS_FLAGS_KEY|UBS_FLAGS_RNG)) && 651 (stat & BS_STAT_MCR2_DONE)) { 652 struct ubsec_q2 *q2; 653 struct ubsec_mcr *mcr; 654 655 mtx_lock(&sc->sc_mcr2lock); 656 while (!SIMPLEQ_EMPTY(&sc->sc_qchip2)) { 657 q2 = SIMPLEQ_FIRST(&sc->sc_qchip2); 658 659 ubsec_dma_sync(&q2->q_mcr, 660 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 661 662 mcr = (struct ubsec_mcr *)q2->q_mcr.dma_vaddr; 663 if ((mcr->mcr_flags & htole16(UBS_MCR_DONE)) == 0) { 664 ubsec_dma_sync(&q2->q_mcr, 665 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 666 break; 667 } 668 SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip2, q2, q_next); 669 ubsec_callback2(sc, q2); 670 /* 671 * Don't send any more packet to chip if there has been 672 * a DMAERR. 673 */ 674 if (!(stat & BS_STAT_DMAERR)) 675 ubsec_feed2(sc); 676 } 677 mtx_unlock(&sc->sc_mcr2lock); 678 } 679 680 /* 681 * Check to see if we got any DMA Error 682 */ 683 if (stat & BS_STAT_DMAERR) { 684#ifdef UBSEC_DEBUG 685 if (ubsec_debug) { 686 volatile u_int32_t a = READ_REG(sc, BS_ERR); 687 688 printf("dmaerr %s@%08x\n", 689 (a & BS_ERR_READ) ? "read" : "write", 690 a & BS_ERR_ADDR); 691 } 692#endif /* UBSEC_DEBUG */ 693 ubsecstats.hst_dmaerr++; 694 mtx_lock(&sc->sc_mcr1lock); 695 ubsec_totalreset(sc); 696 ubsec_feed(sc); 697 mtx_unlock(&sc->sc_mcr1lock); 698 } 699 700 if (sc->sc_needwakeup) { /* XXX check high watermark */ 701 int wakeup; 702 703 mtx_lock(&sc->sc_freeqlock); 704 wakeup = sc->sc_needwakeup & (CRYPTO_SYMQ|CRYPTO_ASYMQ); 705#ifdef UBSEC_DEBUG 706 if (ubsec_debug) 707 device_printf(sc->sc_dev, "wakeup crypto (%x)\n", 708 sc->sc_needwakeup); 709#endif /* UBSEC_DEBUG */ 710 sc->sc_needwakeup &= ~wakeup; 711 mtx_unlock(&sc->sc_freeqlock); 712 crypto_unblock(sc->sc_cid, wakeup); 713 } 714} 715 716/* 717 * ubsec_feed() - aggregate and post requests to chip 718 */ 719static void 720ubsec_feed(struct ubsec_softc *sc) 721{ 722 struct ubsec_q *q, *q2; 723 int npkts, i; 724 void *v; 725 u_int32_t stat; 726 727 /* 728 * Decide how many ops to combine in a single MCR. We cannot 729 * aggregate more than UBS_MAX_AGGR because this is the number 730 * of slots defined in the data structure. Note that 731 * aggregation only happens if ops are marked batch'able. 732 * Aggregating ops reduces the number of interrupts to the host 733 * but also (potentially) increases the latency for processing 734 * completed ops as we only get an interrupt when all aggregated 735 * ops have completed. 736 */ 737 if (sc->sc_nqueue == 0) 738 return; 739 if (sc->sc_nqueue > 1) { 740 npkts = 0; 741 SIMPLEQ_FOREACH(q, &sc->sc_queue, q_next) { 742 npkts++; 743 if ((q->q_crp->crp_flags & CRYPTO_F_BATCH) == 0) 744 break; 745 } 746 } else 747 npkts = 1; 748 /* 749 * Check device status before going any further. 750 */ 751 if ((stat = READ_REG(sc, BS_STAT)) & (BS_STAT_MCR1_FULL | BS_STAT_DMAERR)) { 752 if (stat & BS_STAT_DMAERR) { 753 ubsec_totalreset(sc); 754 ubsecstats.hst_dmaerr++; 755 } else 756 ubsecstats.hst_mcr1full++; 757 return; 758 } 759 if (sc->sc_nqueue > ubsecstats.hst_maxqueue) 760 ubsecstats.hst_maxqueue = sc->sc_nqueue; 761 if (npkts > UBS_MAX_AGGR) 762 npkts = UBS_MAX_AGGR; 763 if (npkts < 2) /* special case 1 op */ 764 goto feed1; 765 766 ubsecstats.hst_totbatch += npkts-1; 767#ifdef UBSEC_DEBUG 768 if (ubsec_debug) 769 printf("merging %d records\n", npkts); 770#endif /* UBSEC_DEBUG */ 771 772 q = SIMPLEQ_FIRST(&sc->sc_queue); 773 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q, q_next); 774 --sc->sc_nqueue; 775 776 bus_dmamap_sync(sc->sc_dmat, q->q_src_map, BUS_DMASYNC_PREWRITE); 777 if (q->q_dst_map != NULL) 778 bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, BUS_DMASYNC_PREREAD); 779 780 q->q_nstacked_mcrs = npkts - 1; /* Number of packets stacked */ 781 782 for (i = 0; i < q->q_nstacked_mcrs; i++) { 783 q2 = SIMPLEQ_FIRST(&sc->sc_queue); 784 bus_dmamap_sync(sc->sc_dmat, q2->q_src_map, 785 BUS_DMASYNC_PREWRITE); 786 if (q2->q_dst_map != NULL) 787 bus_dmamap_sync(sc->sc_dmat, q2->q_dst_map, 788 BUS_DMASYNC_PREREAD); 789 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q2, q_next); 790 --sc->sc_nqueue; 791 792 v = (void*)(((char *)&q2->q_dma->d_dma->d_mcr) + sizeof(struct ubsec_mcr) - 793 sizeof(struct ubsec_mcr_add)); 794 bcopy(v, &q->q_dma->d_dma->d_mcradd[i], sizeof(struct ubsec_mcr_add)); 795 q->q_stacked_mcr[i] = q2; 796 } 797 q->q_dma->d_dma->d_mcr.mcr_pkts = htole16(npkts); 798 SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next); 799 sc->sc_nqchip += npkts; 800 if (sc->sc_nqchip > ubsecstats.hst_maxqchip) 801 ubsecstats.hst_maxqchip = sc->sc_nqchip; 802 ubsec_dma_sync(&q->q_dma->d_alloc, 803 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 804 WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr + 805 offsetof(struct ubsec_dmachunk, d_mcr)); 806 return; 807feed1: 808 q = SIMPLEQ_FIRST(&sc->sc_queue); 809 810 bus_dmamap_sync(sc->sc_dmat, q->q_src_map, BUS_DMASYNC_PREWRITE); 811 if (q->q_dst_map != NULL) 812 bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, BUS_DMASYNC_PREREAD); 813 ubsec_dma_sync(&q->q_dma->d_alloc, 814 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 815 816 WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr + 817 offsetof(struct ubsec_dmachunk, d_mcr)); 818#ifdef UBSEC_DEBUG 819 if (ubsec_debug) 820 printf("feed1: q->chip %p %08x stat %08x\n", 821 q, (u_int32_t)vtophys(&q->q_dma->d_dma->d_mcr), 822 stat); 823#endif /* UBSEC_DEBUG */ 824 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q, q_next); 825 --sc->sc_nqueue; 826 SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next); 827 sc->sc_nqchip++; 828 if (sc->sc_nqchip > ubsecstats.hst_maxqchip) 829 ubsecstats.hst_maxqchip = sc->sc_nqchip; 830 return; 831} 832 833/* 834 * Allocate a new 'session' and return an encoded session id. 'sidp' 835 * contains our registration id, and should contain an encoded session 836 * id on successful allocation. 837 */ 838static int 839ubsec_newsession(void *arg, u_int32_t *sidp, struct cryptoini *cri) 840{ 841 struct cryptoini *c, *encini = NULL, *macini = NULL; 842 struct ubsec_softc *sc = arg; 843 struct ubsec_session *ses = NULL; 844 MD5_CTX md5ctx; 845 SHA1_CTX sha1ctx; 846 int i, sesn; 847 848 if (sidp == NULL || cri == NULL || sc == NULL) 849 return (EINVAL); 850 851 for (c = cri; c != NULL; c = c->cri_next) { 852 if (c->cri_alg == CRYPTO_MD5_HMAC || 853 c->cri_alg == CRYPTO_SHA1_HMAC) { 854 if (macini) 855 return (EINVAL); 856 macini = c; 857 } else if (c->cri_alg == CRYPTO_DES_CBC || 858 c->cri_alg == CRYPTO_3DES_CBC) { 859 if (encini) 860 return (EINVAL); 861 encini = c; 862 } else 863 return (EINVAL); 864 } 865 if (encini == NULL && macini == NULL) 866 return (EINVAL); 867 868 if (sc->sc_sessions == NULL) { 869 ses = sc->sc_sessions = (struct ubsec_session *)malloc( 870 sizeof(struct ubsec_session), M_DEVBUF, M_NOWAIT); 871 if (ses == NULL) 872 return (ENOMEM); 873 sesn = 0; 874 sc->sc_nsessions = 1; 875 } else { 876 for (sesn = 0; sesn < sc->sc_nsessions; sesn++) { 877 if (sc->sc_sessions[sesn].ses_used == 0) { 878 ses = &sc->sc_sessions[sesn]; 879 break; 880 } 881 } 882 883 if (ses == NULL) { 884 sesn = sc->sc_nsessions; 885 ses = (struct ubsec_session *)malloc((sesn + 1) * 886 sizeof(struct ubsec_session), M_DEVBUF, M_NOWAIT); 887 if (ses == NULL) 888 return (ENOMEM); 889 bcopy(sc->sc_sessions, ses, sesn * 890 sizeof(struct ubsec_session)); 891 bzero(sc->sc_sessions, sesn * 892 sizeof(struct ubsec_session)); 893 free(sc->sc_sessions, M_DEVBUF); 894 sc->sc_sessions = ses; 895 ses = &sc->sc_sessions[sesn]; 896 sc->sc_nsessions++; 897 } 898 } 899 bzero(ses, sizeof(struct ubsec_session)); 900 ses->ses_used = 1; 901 902 if (encini) { 903 /* get an IV, network byte order */ 904 /* XXX may read fewer than requested */ 905 read_random(ses->ses_iv, sizeof(ses->ses_iv)); 906 907 /* Go ahead and compute key in ubsec's byte order */ 908 if (encini->cri_alg == CRYPTO_DES_CBC) { 909 bcopy(encini->cri_key, &ses->ses_deskey[0], 8); 910 bcopy(encini->cri_key, &ses->ses_deskey[2], 8); 911 bcopy(encini->cri_key, &ses->ses_deskey[4], 8); 912 } else 913 bcopy(encini->cri_key, ses->ses_deskey, 24); 914 915 SWAP32(ses->ses_deskey[0]); 916 SWAP32(ses->ses_deskey[1]); 917 SWAP32(ses->ses_deskey[2]); 918 SWAP32(ses->ses_deskey[3]); 919 SWAP32(ses->ses_deskey[4]); 920 SWAP32(ses->ses_deskey[5]); 921 } 922 923 if (macini) { 924 ses->ses_mlen = macini->cri_mlen; 925 if (ses->ses_mlen == 0) { 926 if (macini->cri_alg == CRYPTO_MD5_HMAC) 927 ses->ses_mlen = MD5_DIGEST_LENGTH; 928 else 929 ses->ses_mlen = SHA1_RESULTLEN; 930 } 931 932 for (i = 0; i < macini->cri_klen / 8; i++) 933 macini->cri_key[i] ^= HMAC_IPAD_VAL; 934 935 if (macini->cri_alg == CRYPTO_MD5_HMAC) { 936 MD5Init(&md5ctx); 937 MD5Update(&md5ctx, macini->cri_key, 938 macini->cri_klen / 8); 939 MD5Update(&md5ctx, hmac_ipad_buffer, 940 HMAC_BLOCK_LEN - (macini->cri_klen / 8)); 941 bcopy(md5ctx.state, ses->ses_hminner, 942 sizeof(md5ctx.state)); 943 } else { 944 SHA1Init(&sha1ctx); 945 SHA1Update(&sha1ctx, macini->cri_key, 946 macini->cri_klen / 8); 947 SHA1Update(&sha1ctx, hmac_ipad_buffer, 948 HMAC_BLOCK_LEN - (macini->cri_klen / 8)); 949 bcopy(sha1ctx.h.b32, ses->ses_hminner, 950 sizeof(sha1ctx.h.b32)); 951 } 952 953 for (i = 0; i < macini->cri_klen / 8; i++) 954 macini->cri_key[i] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL); 955 956 if (macini->cri_alg == CRYPTO_MD5_HMAC) { 957 MD5Init(&md5ctx); 958 MD5Update(&md5ctx, macini->cri_key, 959 macini->cri_klen / 8); 960 MD5Update(&md5ctx, hmac_opad_buffer, 961 HMAC_BLOCK_LEN - (macini->cri_klen / 8)); 962 bcopy(md5ctx.state, ses->ses_hmouter, 963 sizeof(md5ctx.state)); 964 } else { 965 SHA1Init(&sha1ctx); 966 SHA1Update(&sha1ctx, macini->cri_key, 967 macini->cri_klen / 8); 968 SHA1Update(&sha1ctx, hmac_opad_buffer, 969 HMAC_BLOCK_LEN - (macini->cri_klen / 8)); 970 bcopy(sha1ctx.h.b32, ses->ses_hmouter, 971 sizeof(sha1ctx.h.b32)); 972 } 973 974 for (i = 0; i < macini->cri_klen / 8; i++) 975 macini->cri_key[i] ^= HMAC_OPAD_VAL; 976 } 977 978 *sidp = UBSEC_SID(device_get_unit(sc->sc_dev), sesn); 979 return (0); 980} 981 982/* 983 * Deallocate a session. 984 */ 985static int 986ubsec_freesession(void *arg, u_int64_t tid) 987{ 988 struct ubsec_softc *sc = arg; 989 int session, ret; 990 u_int32_t sid = CRYPTO_SESID2LID(tid); 991 992 if (sc == NULL) 993 return (EINVAL); 994 995 session = UBSEC_SESSION(sid); 996 if (session < sc->sc_nsessions) { 997 bzero(&sc->sc_sessions[session], 998 sizeof(sc->sc_sessions[session])); 999 ret = 0; 1000 } else 1001 ret = EINVAL; 1002 1003 return (ret); 1004} 1005 1006static void 1007ubsec_op_cb(void *arg, bus_dma_segment_t *seg, int nsegs, bus_size_t mapsize, int error) 1008{ 1009 struct ubsec_operand *op = arg; 1010 1011 KASSERT(nsegs <= UBS_MAX_SCATTER, 1012 ("Too many DMA segments returned when mapping operand")); 1013#ifdef UBSEC_DEBUG 1014 if (ubsec_debug) 1015 printf("ubsec_op_cb: mapsize %u nsegs %d\n", 1016 (u_int) mapsize, nsegs); 1017#endif 1018 op->mapsize = mapsize; 1019 op->nsegs = nsegs; 1020 bcopy(seg, op->segs, nsegs * sizeof (seg[0])); 1021} 1022 1023static int 1024ubsec_process(void *arg, struct cryptop *crp, int hint) 1025{ 1026 struct ubsec_q *q = NULL; 1027 int err = 0, i, j, nicealign; 1028 struct ubsec_softc *sc = arg; 1029 struct cryptodesc *crd1, *crd2, *maccrd, *enccrd; 1030 int encoffset = 0, macoffset = 0, cpskip, cpoffset; 1031 int sskip, dskip, stheend, dtheend; 1032 int16_t coffset; 1033 struct ubsec_session *ses; 1034 struct ubsec_pktctx ctx; 1035 struct ubsec_dma *dmap = NULL; 1036 1037 if (crp == NULL || crp->crp_callback == NULL || sc == NULL) { 1038 ubsecstats.hst_invalid++; 1039 return (EINVAL); 1040 } 1041 if (UBSEC_SESSION(crp->crp_sid) >= sc->sc_nsessions) { 1042 ubsecstats.hst_badsession++; 1043 return (EINVAL); 1044 } 1045 1046 mtx_lock(&sc->sc_freeqlock); 1047 if (SIMPLEQ_EMPTY(&sc->sc_freequeue)) { 1048 ubsecstats.hst_queuefull++; 1049 sc->sc_needwakeup |= CRYPTO_SYMQ; 1050 mtx_unlock(&sc->sc_freeqlock); 1051 return (ERESTART); 1052 } 1053 q = SIMPLEQ_FIRST(&sc->sc_freequeue); 1054 SIMPLEQ_REMOVE_HEAD(&sc->sc_freequeue, q, q_next); 1055 mtx_unlock(&sc->sc_freeqlock); 1056 1057 dmap = q->q_dma; /* Save dma pointer */ 1058 bzero(q, sizeof(struct ubsec_q)); 1059 bzero(&ctx, sizeof(ctx)); 1060 1061 q->q_sesn = UBSEC_SESSION(crp->crp_sid); 1062 q->q_dma = dmap; 1063 ses = &sc->sc_sessions[q->q_sesn]; 1064 1065 if (crp->crp_flags & CRYPTO_F_IMBUF) { 1066 q->q_src_m = (struct mbuf *)crp->crp_buf; 1067 q->q_dst_m = (struct mbuf *)crp->crp_buf; 1068 } else if (crp->crp_flags & CRYPTO_F_IOV) { 1069 q->q_src_io = (struct uio *)crp->crp_buf; 1070 q->q_dst_io = (struct uio *)crp->crp_buf; 1071 } else { 1072 ubsecstats.hst_badflags++; 1073 err = EINVAL; 1074 goto errout; /* XXX we don't handle contiguous blocks! */ 1075 } 1076 1077 bzero(&dmap->d_dma->d_mcr, sizeof(struct ubsec_mcr)); 1078 1079 dmap->d_dma->d_mcr.mcr_pkts = htole16(1); 1080 dmap->d_dma->d_mcr.mcr_flags = 0; 1081 q->q_crp = crp; 1082 1083 crd1 = crp->crp_desc; 1084 if (crd1 == NULL) { 1085 ubsecstats.hst_nodesc++; 1086 err = EINVAL; 1087 goto errout; 1088 } 1089 crd2 = crd1->crd_next; 1090 1091 if ((crd1->crd_flags & CRD_F_KEY_EXPLICIT) || 1092 (crd2 != NULL && (crd2->crd_flags & CRD_F_KEY_EXPLICIT))) { 1093 ubsecstats.hst_badflags++; 1094 err = EINVAL; 1095 goto errout; 1096 } 1097 1098 if (crd2 == NULL) { 1099 if (crd1->crd_alg == CRYPTO_MD5_HMAC || 1100 crd1->crd_alg == CRYPTO_SHA1_HMAC) { 1101 maccrd = crd1; 1102 enccrd = NULL; 1103 } else if (crd1->crd_alg == CRYPTO_DES_CBC || 1104 crd1->crd_alg == CRYPTO_3DES_CBC) { 1105 maccrd = NULL; 1106 enccrd = crd1; 1107 } else { 1108 ubsecstats.hst_badalg++; 1109 err = EINVAL; 1110 goto errout; 1111 } 1112 } else { 1113 if ((crd1->crd_alg == CRYPTO_MD5_HMAC || 1114 crd1->crd_alg == CRYPTO_SHA1_HMAC) && 1115 (crd2->crd_alg == CRYPTO_DES_CBC || 1116 crd2->crd_alg == CRYPTO_3DES_CBC) && 1117 ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) { 1118 maccrd = crd1; 1119 enccrd = crd2; 1120 } else if ((crd1->crd_alg == CRYPTO_DES_CBC || 1121 crd1->crd_alg == CRYPTO_3DES_CBC) && 1122 (crd2->crd_alg == CRYPTO_MD5_HMAC || 1123 crd2->crd_alg == CRYPTO_SHA1_HMAC) && 1124 (crd1->crd_flags & CRD_F_ENCRYPT)) { 1125 enccrd = crd1; 1126 maccrd = crd2; 1127 } else { 1128 /* 1129 * We cannot order the ubsec as requested 1130 */ 1131 ubsecstats.hst_badalg++; 1132 err = EINVAL; 1133 goto errout; 1134 } 1135 } 1136 1137 if (enccrd) { 1138 encoffset = enccrd->crd_skip; 1139 ctx.pc_flags |= htole16(UBS_PKTCTX_ENC_3DES); 1140 1141 if (enccrd->crd_flags & CRD_F_ENCRYPT) { 1142 q->q_flags |= UBSEC_QFLAGS_COPYOUTIV; 1143 1144 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) 1145 bcopy(enccrd->crd_iv, ctx.pc_iv, 8); 1146 else { 1147 ctx.pc_iv[0] = ses->ses_iv[0]; 1148 ctx.pc_iv[1] = ses->ses_iv[1]; 1149 } 1150 1151 if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) { 1152 if (crp->crp_flags & CRYPTO_F_IMBUF) 1153 m_copyback(q->q_src_m, 1154 enccrd->crd_inject, 1155 8, (caddr_t)ctx.pc_iv); 1156 else if (crp->crp_flags & CRYPTO_F_IOV) 1157 cuio_copyback(q->q_src_io, 1158 enccrd->crd_inject, 1159 8, (caddr_t)ctx.pc_iv); 1160 } 1161 } else { 1162 ctx.pc_flags |= htole16(UBS_PKTCTX_INBOUND); 1163 1164 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) 1165 bcopy(enccrd->crd_iv, ctx.pc_iv, 8); 1166 else if (crp->crp_flags & CRYPTO_F_IMBUF) 1167 m_copydata(q->q_src_m, enccrd->crd_inject, 1168 8, (caddr_t)ctx.pc_iv); 1169 else if (crp->crp_flags & CRYPTO_F_IOV) 1170 cuio_copydata(q->q_src_io, 1171 enccrd->crd_inject, 8, 1172 (caddr_t)ctx.pc_iv); 1173 } 1174 1175 ctx.pc_deskey[0] = ses->ses_deskey[0]; 1176 ctx.pc_deskey[1] = ses->ses_deskey[1]; 1177 ctx.pc_deskey[2] = ses->ses_deskey[2]; 1178 ctx.pc_deskey[3] = ses->ses_deskey[3]; 1179 ctx.pc_deskey[4] = ses->ses_deskey[4]; 1180 ctx.pc_deskey[5] = ses->ses_deskey[5]; 1181 SWAP32(ctx.pc_iv[0]); 1182 SWAP32(ctx.pc_iv[1]); 1183 } 1184 1185 if (maccrd) { 1186 macoffset = maccrd->crd_skip; 1187 1188 if (maccrd->crd_alg == CRYPTO_MD5_HMAC) 1189 ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_MD5); 1190 else 1191 ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_SHA1); 1192 1193 for (i = 0; i < 5; i++) { 1194 ctx.pc_hminner[i] = ses->ses_hminner[i]; 1195 ctx.pc_hmouter[i] = ses->ses_hmouter[i]; 1196 1197 HTOLE32(ctx.pc_hminner[i]); 1198 HTOLE32(ctx.pc_hmouter[i]); 1199 } 1200 } 1201 1202 if (enccrd && maccrd) { 1203 /* 1204 * ubsec cannot handle packets where the end of encryption 1205 * and authentication are not the same, or where the 1206 * encrypted part begins before the authenticated part. 1207 */ 1208 if ((encoffset + enccrd->crd_len) != 1209 (macoffset + maccrd->crd_len)) { 1210 ubsecstats.hst_lenmismatch++; 1211 err = EINVAL; 1212 goto errout; 1213 } 1214 if (enccrd->crd_skip < maccrd->crd_skip) { 1215 ubsecstats.hst_skipmismatch++; 1216 err = EINVAL; 1217 goto errout; 1218 } 1219 sskip = maccrd->crd_skip; 1220 cpskip = dskip = enccrd->crd_skip; 1221 stheend = maccrd->crd_len; 1222 dtheend = enccrd->crd_len; 1223 coffset = enccrd->crd_skip - maccrd->crd_skip; 1224 cpoffset = cpskip + dtheend; 1225#ifdef UBSEC_DEBUG 1226 if (ubsec_debug) { 1227 printf("mac: skip %d, len %d, inject %d\n", 1228 maccrd->crd_skip, maccrd->crd_len, maccrd->crd_inject); 1229 printf("enc: skip %d, len %d, inject %d\n", 1230 enccrd->crd_skip, enccrd->crd_len, enccrd->crd_inject); 1231 printf("src: skip %d, len %d\n", sskip, stheend); 1232 printf("dst: skip %d, len %d\n", dskip, dtheend); 1233 printf("ubs: coffset %d, pktlen %d, cpskip %d, cpoffset %d\n", 1234 coffset, stheend, cpskip, cpoffset); 1235 } 1236#endif 1237 } else { 1238 cpskip = dskip = sskip = macoffset + encoffset; 1239 dtheend = stheend = (enccrd)?enccrd->crd_len:maccrd->crd_len; 1240 cpoffset = cpskip + dtheend; 1241 coffset = 0; 1242 } 1243 ctx.pc_offset = htole16(coffset >> 2); 1244 1245 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &q->q_src_map)) { 1246 ubsecstats.hst_nomap++; 1247 err = ENOMEM; 1248 goto errout; 1249 } 1250 if (crp->crp_flags & CRYPTO_F_IMBUF) { 1251 if (bus_dmamap_load_mbuf(sc->sc_dmat, q->q_src_map, 1252 q->q_src_m, ubsec_op_cb, &q->q_src, BUS_DMA_NOWAIT) != 0) { 1253 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map); 1254 q->q_src_map = NULL; 1255 ubsecstats.hst_noload++; 1256 err = ENOMEM; 1257 goto errout; 1258 } 1259 } else if (crp->crp_flags & CRYPTO_F_IOV) { 1260 if (bus_dmamap_load_uio(sc->sc_dmat, q->q_src_map, 1261 q->q_src_io, ubsec_op_cb, &q->q_src, BUS_DMA_NOWAIT) != 0) { 1262 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map); 1263 q->q_src_map = NULL; 1264 ubsecstats.hst_noload++; 1265 err = ENOMEM; 1266 goto errout; 1267 } 1268 } 1269 nicealign = ubsec_dmamap_aligned(&q->q_src); 1270 1271 dmap->d_dma->d_mcr.mcr_pktlen = htole16(stheend); 1272 1273#ifdef UBSEC_DEBUG 1274 if (ubsec_debug) 1275 printf("src skip: %d nicealign: %u\n", sskip, nicealign); 1276#endif 1277 for (i = j = 0; i < q->q_src_nsegs; i++) { 1278 struct ubsec_pktbuf *pb; 1279 bus_size_t packl = q->q_src_segs[i].ds_len; 1280 bus_addr_t packp = q->q_src_segs[i].ds_addr; 1281 1282 if (sskip >= packl) { 1283 sskip -= packl; 1284 continue; 1285 } 1286 1287 packl -= sskip; 1288 packp += sskip; 1289 sskip = 0; 1290 1291 if (packl > 0xfffc) { 1292 err = EIO; 1293 goto errout; 1294 } 1295 1296 if (j == 0) 1297 pb = &dmap->d_dma->d_mcr.mcr_ipktbuf; 1298 else 1299 pb = &dmap->d_dma->d_sbuf[j - 1]; 1300 1301 pb->pb_addr = htole32(packp); 1302 1303 if (stheend) { 1304 if (packl > stheend) { 1305 pb->pb_len = htole32(stheend); 1306 stheend = 0; 1307 } else { 1308 pb->pb_len = htole32(packl); 1309 stheend -= packl; 1310 } 1311 } else 1312 pb->pb_len = htole32(packl); 1313 1314 if ((i + 1) == q->q_src_nsegs) 1315 pb->pb_next = 0; 1316 else 1317 pb->pb_next = htole32(dmap->d_alloc.dma_paddr + 1318 offsetof(struct ubsec_dmachunk, d_sbuf[j])); 1319 j++; 1320 } 1321 1322 if (enccrd == NULL && maccrd != NULL) { 1323 dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr = 0; 1324 dmap->d_dma->d_mcr.mcr_opktbuf.pb_len = 0; 1325 dmap->d_dma->d_mcr.mcr_opktbuf.pb_next = htole32(dmap->d_alloc.dma_paddr + 1326 offsetof(struct ubsec_dmachunk, d_macbuf[0])); 1327#ifdef UBSEC_DEBUG 1328 if (ubsec_debug) 1329 printf("opkt: %x %x %x\n", 1330 dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr, 1331 dmap->d_dma->d_mcr.mcr_opktbuf.pb_len, 1332 dmap->d_dma->d_mcr.mcr_opktbuf.pb_next); 1333#endif 1334 } else { 1335 if (crp->crp_flags & CRYPTO_F_IOV) { 1336 if (!nicealign) { 1337 ubsecstats.hst_iovmisaligned++; 1338 err = EINVAL; 1339 goto errout; 1340 } 1341 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, 1342 &q->q_dst_map)) { 1343 ubsecstats.hst_nomap++; 1344 err = ENOMEM; 1345 goto errout; 1346 } 1347 if (bus_dmamap_load_uio(sc->sc_dmat, q->q_dst_map, 1348 q->q_dst_io, ubsec_op_cb, &q->q_dst, BUS_DMA_NOWAIT) != 0) { 1349 bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map); 1350 q->q_dst_map = NULL; 1351 ubsecstats.hst_noload++; 1352 err = ENOMEM; 1353 goto errout; 1354 } 1355 } else if (crp->crp_flags & CRYPTO_F_IMBUF) { 1356 if (nicealign) { 1357 q->q_dst = q->q_src; 1358 } else { 1359 int totlen, len; 1360 struct mbuf *m, *top, **mp; 1361 1362 ubsecstats.hst_unaligned++; 1363 totlen = q->q_src_mapsize; 1364 if (q->q_src_m->m_flags & M_PKTHDR) { 1365 len = MHLEN; 1366 MGETHDR(m, M_DONTWAIT, MT_DATA); 1367 if (m && !m_dup_pkthdr(m, q->q_src_m, M_DONTWAIT)) { 1368 m_free(m); 1369 m = NULL; 1370 } 1371 } else { 1372 len = MLEN; 1373 MGET(m, M_DONTWAIT, MT_DATA); 1374 } 1375 if (m == NULL) { 1376 ubsecstats.hst_nombuf++; 1377 err = sc->sc_nqueue ? ERESTART : ENOMEM; 1378 goto errout; 1379 } 1380 if (totlen >= MINCLSIZE) { 1381 MCLGET(m, M_DONTWAIT); 1382 if ((m->m_flags & M_EXT) == 0) { 1383 m_free(m); 1384 ubsecstats.hst_nomcl++; 1385 err = sc->sc_nqueue ? ERESTART : ENOMEM; 1386 goto errout; 1387 } 1388 len = MCLBYTES; 1389 } 1390 m->m_len = len; 1391 top = NULL; 1392 mp = ⊤ 1393 1394 while (totlen > 0) { 1395 if (top) { 1396 MGET(m, M_DONTWAIT, MT_DATA); 1397 if (m == NULL) { 1398 m_freem(top); 1399 ubsecstats.hst_nombuf++; 1400 err = sc->sc_nqueue ? ERESTART : ENOMEM; 1401 goto errout; 1402 } 1403 len = MLEN; 1404 } 1405 if (top && totlen >= MINCLSIZE) { 1406 MCLGET(m, M_DONTWAIT); 1407 if ((m->m_flags & M_EXT) == 0) { 1408 *mp = m; 1409 m_freem(top); 1410 ubsecstats.hst_nomcl++; 1411 err = sc->sc_nqueue ? ERESTART : ENOMEM; 1412 goto errout; 1413 } 1414 len = MCLBYTES; 1415 } 1416 m->m_len = len = min(totlen, len); 1417 totlen -= len; 1418 *mp = m; 1419 mp = &m->m_next; 1420 } 1421 q->q_dst_m = top; 1422 ubsec_mcopy(q->q_src_m, q->q_dst_m, 1423 cpskip, cpoffset); 1424 if (bus_dmamap_create(sc->sc_dmat, 1425 BUS_DMA_NOWAIT, &q->q_dst_map) != 0) { 1426 ubsecstats.hst_nomap++; 1427 err = ENOMEM; 1428 goto errout; 1429 } 1430 if (bus_dmamap_load_mbuf(sc->sc_dmat, 1431 q->q_dst_map, q->q_dst_m, 1432 ubsec_op_cb, &q->q_dst, 1433 BUS_DMA_NOWAIT) != 0) { 1434 bus_dmamap_destroy(sc->sc_dmat, 1435 q->q_dst_map); 1436 q->q_dst_map = NULL; 1437 ubsecstats.hst_noload++; 1438 err = ENOMEM; 1439 goto errout; 1440 } 1441 } 1442 } else { 1443 ubsecstats.hst_badflags++; 1444 err = EINVAL; 1445 goto errout; 1446 } 1447 1448#ifdef UBSEC_DEBUG 1449 if (ubsec_debug) 1450 printf("dst skip: %d\n", dskip); 1451#endif 1452 for (i = j = 0; i < q->q_dst_nsegs; i++) { 1453 struct ubsec_pktbuf *pb; 1454 bus_size_t packl = q->q_dst_segs[i].ds_len; 1455 bus_addr_t packp = q->q_dst_segs[i].ds_addr; 1456 1457 if (dskip >= packl) { 1458 dskip -= packl; 1459 continue; 1460 } 1461 1462 packl -= dskip; 1463 packp += dskip; 1464 dskip = 0; 1465 1466 if (packl > 0xfffc) { 1467 err = EIO; 1468 goto errout; 1469 } 1470 1471 if (j == 0) 1472 pb = &dmap->d_dma->d_mcr.mcr_opktbuf; 1473 else 1474 pb = &dmap->d_dma->d_dbuf[j - 1]; 1475 1476 pb->pb_addr = htole32(packp); 1477 1478 if (dtheend) { 1479 if (packl > dtheend) { 1480 pb->pb_len = htole32(dtheend); 1481 dtheend = 0; 1482 } else { 1483 pb->pb_len = htole32(packl); 1484 dtheend -= packl; 1485 } 1486 } else 1487 pb->pb_len = htole32(packl); 1488 1489 if ((i + 1) == q->q_dst_nsegs) { 1490 if (maccrd) 1491 pb->pb_next = htole32(dmap->d_alloc.dma_paddr + 1492 offsetof(struct ubsec_dmachunk, d_macbuf[0])); 1493 else 1494 pb->pb_next = 0; 1495 } else 1496 pb->pb_next = htole32(dmap->d_alloc.dma_paddr + 1497 offsetof(struct ubsec_dmachunk, d_dbuf[j])); 1498 j++; 1499 } 1500 } 1501 1502 dmap->d_dma->d_mcr.mcr_cmdctxp = htole32(dmap->d_alloc.dma_paddr + 1503 offsetof(struct ubsec_dmachunk, d_ctx)); 1504 1505 if (sc->sc_flags & UBS_FLAGS_LONGCTX) { 1506 struct ubsec_pktctx_long *ctxl; 1507 1508 ctxl = (struct ubsec_pktctx_long *)(dmap->d_alloc.dma_vaddr + 1509 offsetof(struct ubsec_dmachunk, d_ctx)); 1510 1511 /* transform small context into long context */ 1512 ctxl->pc_len = htole16(sizeof(struct ubsec_pktctx_long)); 1513 ctxl->pc_type = htole16(UBS_PKTCTX_TYPE_IPSEC); 1514 ctxl->pc_flags = ctx.pc_flags; 1515 ctxl->pc_offset = ctx.pc_offset; 1516 for (i = 0; i < 6; i++) 1517 ctxl->pc_deskey[i] = ctx.pc_deskey[i]; 1518 for (i = 0; i < 5; i++) 1519 ctxl->pc_hminner[i] = ctx.pc_hminner[i]; 1520 for (i = 0; i < 5; i++) 1521 ctxl->pc_hmouter[i] = ctx.pc_hmouter[i]; 1522 ctxl->pc_iv[0] = ctx.pc_iv[0]; 1523 ctxl->pc_iv[1] = ctx.pc_iv[1]; 1524 } else 1525 bcopy(&ctx, dmap->d_alloc.dma_vaddr + 1526 offsetof(struct ubsec_dmachunk, d_ctx), 1527 sizeof(struct ubsec_pktctx)); 1528 1529 mtx_lock(&sc->sc_mcr1lock); 1530 SIMPLEQ_INSERT_TAIL(&sc->sc_queue, q, q_next); 1531 sc->sc_nqueue++; 1532 ubsecstats.hst_ipackets++; 1533 ubsecstats.hst_ibytes += dmap->d_alloc.dma_size; 1534 if ((hint & CRYPTO_HINT_MORE) == 0 || sc->sc_nqueue >= UBS_MAX_AGGR) 1535 ubsec_feed(sc); 1536 mtx_unlock(&sc->sc_mcr1lock); 1537 return (0); 1538 1539errout: 1540 if (q != NULL) { 1541 if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m)) 1542 m_freem(q->q_dst_m); 1543 1544 if (q->q_dst_map != NULL && q->q_dst_map != q->q_src_map) { 1545 bus_dmamap_unload(sc->sc_dmat, q->q_dst_map); 1546 bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map); 1547 } 1548 if (q->q_src_map != NULL) { 1549 bus_dmamap_unload(sc->sc_dmat, q->q_src_map); 1550 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map); 1551 } 1552 } 1553 if (q != NULL || err == ERESTART) { 1554 mtx_lock(&sc->sc_freeqlock); 1555 if (q != NULL) 1556 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next); 1557 if (err == ERESTART) 1558 sc->sc_needwakeup |= CRYPTO_SYMQ; 1559 mtx_unlock(&sc->sc_freeqlock); 1560 } 1561 if (err != ERESTART) { 1562 crp->crp_etype = err; 1563 crypto_done(crp); 1564 } 1565 return (err); 1566} 1567 1568static void 1569ubsec_callback(struct ubsec_softc *sc, struct ubsec_q *q) 1570{ 1571 struct cryptop *crp = (struct cryptop *)q->q_crp; 1572 struct cryptodesc *crd; 1573 struct ubsec_dma *dmap = q->q_dma; 1574 1575 ubsecstats.hst_opackets++; 1576 ubsecstats.hst_obytes += dmap->d_alloc.dma_size; 1577 1578 ubsec_dma_sync(&dmap->d_alloc, 1579 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1580 if (q->q_dst_map != NULL && q->q_dst_map != q->q_src_map) { 1581 bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, 1582 BUS_DMASYNC_POSTREAD); 1583 bus_dmamap_unload(sc->sc_dmat, q->q_dst_map); 1584 bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map); 1585 } 1586 bus_dmamap_sync(sc->sc_dmat, q->q_src_map, BUS_DMASYNC_POSTWRITE); 1587 bus_dmamap_unload(sc->sc_dmat, q->q_src_map); 1588 bus_dmamap_destroy(sc->sc_dmat, q->q_src_map); 1589 1590 if ((crp->crp_flags & CRYPTO_F_IMBUF) && (q->q_src_m != q->q_dst_m)) { 1591 m_freem(q->q_src_m); 1592 crp->crp_buf = (caddr_t)q->q_dst_m; 1593 } 1594 ubsecstats.hst_obytes += ((struct mbuf *)crp->crp_buf)->m_len; 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 if (crp->crp_flags & CRYPTO_F_IMBUF) 1603 m_copydata((struct mbuf *)crp->crp_buf, 1604 crd->crd_skip + crd->crd_len - 8, 8, 1605 (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv); 1606 else if (crp->crp_flags & CRYPTO_F_IOV) { 1607 cuio_copydata((struct uio *)crp->crp_buf, 1608 crd->crd_skip + crd->crd_len - 8, 8, 1609 (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv); 1610 } 1611 break; 1612 } 1613 } 1614 1615 for (crd = crp->crp_desc; crd; crd = crd->crd_next) { 1616 if (crd->crd_alg != CRYPTO_MD5_HMAC && 1617 crd->crd_alg != CRYPTO_SHA1_HMAC) 1618 continue; 1619 if (crp->crp_flags & CRYPTO_F_IMBUF) 1620 m_copyback((struct mbuf *)crp->crp_buf, 1621 crd->crd_inject, 1622 sc->sc_sessions[q->q_sesn].ses_mlen, 1623 (caddr_t)dmap->d_dma->d_macbuf); 1624 else if (crp->crp_flags & CRYPTO_F_IOV) 1625 cuio_copyback((struct uio *)crp->crp_buf, 1626 crd->crd_inject, 1627 sc->sc_sessions[q->q_sesn].ses_mlen, 1628 (caddr_t)dmap->d_dma->d_macbuf); 1629 break; 1630 } 1631 mtx_lock(&sc->sc_freeqlock); 1632 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next); 1633 mtx_unlock(&sc->sc_freeqlock); 1634 crypto_done(crp); 1635} 1636 1637static void 1638ubsec_mcopy(struct mbuf *srcm, struct mbuf *dstm, int hoffset, int toffset) 1639{ 1640 int i, j, dlen, slen; 1641 caddr_t dptr, sptr; 1642 1643 j = 0; 1644 sptr = srcm->m_data; 1645 slen = srcm->m_len; 1646 dptr = dstm->m_data; 1647 dlen = dstm->m_len; 1648 1649 while (1) { 1650 for (i = 0; i < min(slen, dlen); i++) { 1651 if (j < hoffset || j >= toffset) 1652 *dptr++ = *sptr++; 1653 slen--; 1654 dlen--; 1655 j++; 1656 } 1657 if (slen == 0) { 1658 srcm = srcm->m_next; 1659 if (srcm == NULL) 1660 return; 1661 sptr = srcm->m_data; 1662 slen = srcm->m_len; 1663 } 1664 if (dlen == 0) { 1665 dstm = dstm->m_next; 1666 if (dstm == NULL) 1667 return; 1668 dptr = dstm->m_data; 1669 dlen = dstm->m_len; 1670 } 1671 } 1672} 1673 1674/* 1675 * feed the key generator, must be called at splimp() or higher. 1676 */ 1677static int 1678ubsec_feed2(struct ubsec_softc *sc) 1679{ 1680 struct ubsec_q2 *q; 1681 1682 while (!SIMPLEQ_EMPTY(&sc->sc_queue2)) { 1683 if (READ_REG(sc, BS_STAT) & BS_STAT_MCR2_FULL) 1684 break; 1685 q = SIMPLEQ_FIRST(&sc->sc_queue2); 1686 1687 ubsec_dma_sync(&q->q_mcr, 1688 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1689 ubsec_dma_sync(&q->q_ctx, BUS_DMASYNC_PREWRITE); 1690 1691 WRITE_REG(sc, BS_MCR2, q->q_mcr.dma_paddr); 1692 SIMPLEQ_REMOVE_HEAD(&sc->sc_queue2, q, q_next); 1693 --sc->sc_nqueue2; 1694 SIMPLEQ_INSERT_TAIL(&sc->sc_qchip2, q, q_next); 1695 } 1696 return (0); 1697} 1698 1699/* 1700 * Callback for handling random numbers 1701 */ 1702static void 1703ubsec_callback2(struct ubsec_softc *sc, struct ubsec_q2 *q) 1704{ 1705 struct cryptkop *krp; 1706 struct ubsec_ctx_keyop *ctx; 1707 1708 ctx = (struct ubsec_ctx_keyop *)q->q_ctx.dma_vaddr; 1709 ubsec_dma_sync(&q->q_ctx, BUS_DMASYNC_POSTWRITE); 1710 1711 switch (q->q_type) { 1712#ifndef UBSEC_NO_RNG 1713 case UBS_CTXOP_RNGBYPASS: { 1714 struct ubsec_q2_rng *rng = (struct ubsec_q2_rng *)q; 1715 1716 ubsec_dma_sync(&rng->rng_buf, BUS_DMASYNC_POSTREAD); 1717 (*sc->sc_harvest)(sc->sc_rndtest, 1718 rng->rng_buf.dma_vaddr, 1719 UBSEC_RNG_BUFSIZ*sizeof (u_int32_t)); 1720 rng->rng_used = 0; 1721 callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc); 1722 break; 1723 } 1724#endif 1725 case UBS_CTXOP_MODEXP: { 1726 struct ubsec_q2_modexp *me = (struct ubsec_q2_modexp *)q; 1727 u_int rlen, clen; 1728 1729 krp = me->me_krp; 1730 rlen = (me->me_modbits + 7) / 8; 1731 clen = (krp->krp_param[krp->krp_iparams].crp_nbits + 7) / 8; 1732 1733 ubsec_dma_sync(&me->me_M, BUS_DMASYNC_POSTWRITE); 1734 ubsec_dma_sync(&me->me_E, BUS_DMASYNC_POSTWRITE); 1735 ubsec_dma_sync(&me->me_C, BUS_DMASYNC_POSTREAD); 1736 ubsec_dma_sync(&me->me_epb, BUS_DMASYNC_POSTWRITE); 1737 1738 if (clen < rlen) 1739 krp->krp_status = E2BIG; 1740 else { 1741 if (sc->sc_flags & UBS_FLAGS_HWNORM) { 1742 bzero(krp->krp_param[krp->krp_iparams].crp_p, 1743 (krp->krp_param[krp->krp_iparams].crp_nbits 1744 + 7) / 8); 1745 bcopy(me->me_C.dma_vaddr, 1746 krp->krp_param[krp->krp_iparams].crp_p, 1747 (me->me_modbits + 7) / 8); 1748 } else 1749 ubsec_kshift_l(me->me_shiftbits, 1750 me->me_C.dma_vaddr, me->me_normbits, 1751 krp->krp_param[krp->krp_iparams].crp_p, 1752 krp->krp_param[krp->krp_iparams].crp_nbits); 1753 } 1754 1755 crypto_kdone(krp); 1756 1757 /* bzero all potentially sensitive data */ 1758 bzero(me->me_E.dma_vaddr, me->me_E.dma_size); 1759 bzero(me->me_M.dma_vaddr, me->me_M.dma_size); 1760 bzero(me->me_C.dma_vaddr, me->me_C.dma_size); 1761 bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size); 1762 1763 /* Can't free here, so put us on the free list. */ 1764 SIMPLEQ_INSERT_TAIL(&sc->sc_q2free, &me->me_q, q_next); 1765 break; 1766 } 1767 case UBS_CTXOP_RSAPRIV: { 1768 struct ubsec_q2_rsapriv *rp = (struct ubsec_q2_rsapriv *)q; 1769 u_int len; 1770 1771 krp = rp->rpr_krp; 1772 ubsec_dma_sync(&rp->rpr_msgin, BUS_DMASYNC_POSTWRITE); 1773 ubsec_dma_sync(&rp->rpr_msgout, BUS_DMASYNC_POSTREAD); 1774 1775 len = (krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT].crp_nbits + 7) / 8; 1776 bcopy(rp->rpr_msgout.dma_vaddr, 1777 krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT].crp_p, len); 1778 1779 crypto_kdone(krp); 1780 1781 bzero(rp->rpr_msgin.dma_vaddr, rp->rpr_msgin.dma_size); 1782 bzero(rp->rpr_msgout.dma_vaddr, rp->rpr_msgout.dma_size); 1783 bzero(rp->rpr_q.q_ctx.dma_vaddr, rp->rpr_q.q_ctx.dma_size); 1784 1785 /* Can't free here, so put us on the free list. */ 1786 SIMPLEQ_INSERT_TAIL(&sc->sc_q2free, &rp->rpr_q, q_next); 1787 break; 1788 } 1789 default: 1790 device_printf(sc->sc_dev, "unknown ctx op: %x\n", 1791 letoh16(ctx->ctx_op)); 1792 break; 1793 } 1794} 1795 1796#ifndef UBSEC_NO_RNG 1797static void 1798ubsec_rng(void *vsc) 1799{ 1800 struct ubsec_softc *sc = vsc; 1801 struct ubsec_q2_rng *rng = &sc->sc_rng; 1802 struct ubsec_mcr *mcr; 1803 struct ubsec_ctx_rngbypass *ctx; 1804 1805 mtx_lock(&sc->sc_mcr2lock); 1806 if (rng->rng_used) { 1807 mtx_unlock(&sc->sc_mcr2lock); 1808 return; 1809 } 1810 sc->sc_nqueue2++; 1811 if (sc->sc_nqueue2 >= UBS_MAX_NQUEUE) 1812 goto out; 1813 1814 mcr = (struct ubsec_mcr *)rng->rng_q.q_mcr.dma_vaddr; 1815 ctx = (struct ubsec_ctx_rngbypass *)rng->rng_q.q_ctx.dma_vaddr; 1816 1817 mcr->mcr_pkts = htole16(1); 1818 mcr->mcr_flags = 0; 1819 mcr->mcr_cmdctxp = htole32(rng->rng_q.q_ctx.dma_paddr); 1820 mcr->mcr_ipktbuf.pb_addr = mcr->mcr_ipktbuf.pb_next = 0; 1821 mcr->mcr_ipktbuf.pb_len = 0; 1822 mcr->mcr_reserved = mcr->mcr_pktlen = 0; 1823 mcr->mcr_opktbuf.pb_addr = htole32(rng->rng_buf.dma_paddr); 1824 mcr->mcr_opktbuf.pb_len = htole32(((sizeof(u_int32_t) * UBSEC_RNG_BUFSIZ)) & 1825 UBS_PKTBUF_LEN); 1826 mcr->mcr_opktbuf.pb_next = 0; 1827 1828 ctx->rbp_len = htole16(sizeof(struct ubsec_ctx_rngbypass)); 1829 ctx->rbp_op = htole16(UBS_CTXOP_RNGBYPASS); 1830 rng->rng_q.q_type = UBS_CTXOP_RNGBYPASS; 1831 1832 ubsec_dma_sync(&rng->rng_buf, BUS_DMASYNC_PREREAD); 1833 1834 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &rng->rng_q, q_next); 1835 rng->rng_used = 1; 1836 ubsec_feed2(sc); 1837 ubsecstats.hst_rng++; 1838 mtx_unlock(&sc->sc_mcr2lock); 1839 1840 return; 1841 1842out: 1843 /* 1844 * Something weird happened, generate our own call back. 1845 */ 1846 sc->sc_nqueue2--; 1847 mtx_unlock(&sc->sc_mcr2lock); 1848 callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc); 1849} 1850#endif /* UBSEC_NO_RNG */ 1851 1852static void 1853ubsec_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1854{ 1855 bus_addr_t *paddr = (bus_addr_t*) arg; 1856 *paddr = segs->ds_addr; 1857} 1858 1859static int 1860ubsec_dma_malloc( 1861 struct ubsec_softc *sc, 1862 bus_size_t size, 1863 struct ubsec_dma_alloc *dma, 1864 int mapflags 1865) 1866{ 1867 int r; 1868 1869 /* XXX could specify sc_dmat as parent but that just adds overhead */ 1870 r = bus_dma_tag_create(NULL, /* parent */ 1871 1, 0, /* alignment, bounds */ 1872 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 1873 BUS_SPACE_MAXADDR, /* highaddr */ 1874 NULL, NULL, /* filter, filterarg */ 1875 size, /* maxsize */ 1876 1, /* nsegments */ 1877 size, /* maxsegsize */ 1878 BUS_DMA_ALLOCNOW, /* flags */ 1879 NULL, NULL, /* lockfunc, lockarg */ 1880 &dma->dma_tag); 1881 if (r != 0) { 1882 device_printf(sc->sc_dev, "ubsec_dma_malloc: " 1883 "bus_dma_tag_create failed; error %u\n", r); 1884 goto fail_0; 1885 } 1886 1887 r = bus_dmamap_create(dma->dma_tag, BUS_DMA_NOWAIT, &dma->dma_map); 1888 if (r != 0) { 1889 device_printf(sc->sc_dev, "ubsec_dma_malloc: " 1890 "bus_dmamap_create failed; error %u\n", r); 1891 goto fail_1; 1892 } 1893 1894 r = bus_dmamem_alloc(dma->dma_tag, (void**) &dma->dma_vaddr, 1895 BUS_DMA_NOWAIT, &dma->dma_map); 1896 if (r != 0) { 1897 device_printf(sc->sc_dev, "ubsec_dma_malloc: " 1898 "bus_dmammem_alloc failed; size %zu, error %u\n", 1899 size, r); 1900 goto fail_2; 1901 } 1902 1903 r = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr, 1904 size, 1905 ubsec_dmamap_cb, 1906 &dma->dma_paddr, 1907 mapflags | BUS_DMA_NOWAIT); 1908 if (r != 0) { 1909 device_printf(sc->sc_dev, "ubsec_dma_malloc: " 1910 "bus_dmamap_load failed; error %u\n", r); 1911 goto fail_3; 1912 } 1913 1914 dma->dma_size = size; 1915 return (0); 1916 1917fail_3: 1918 bus_dmamap_unload(dma->dma_tag, dma->dma_map); 1919fail_2: 1920 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map); 1921fail_1: 1922 bus_dmamap_destroy(dma->dma_tag, dma->dma_map); 1923 bus_dma_tag_destroy(dma->dma_tag); 1924fail_0: 1925 dma->dma_map = NULL; 1926 dma->dma_tag = NULL; 1927 return (r); 1928} 1929 1930static void 1931ubsec_dma_free(struct ubsec_softc *sc, struct ubsec_dma_alloc *dma) 1932{ 1933 bus_dmamap_unload(dma->dma_tag, dma->dma_map); 1934 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map); 1935 bus_dmamap_destroy(dma->dma_tag, dma->dma_map); 1936 bus_dma_tag_destroy(dma->dma_tag); 1937} 1938 1939/* 1940 * Resets the board. Values in the regesters are left as is 1941 * from the reset (i.e. initial values are assigned elsewhere). 1942 */ 1943static void 1944ubsec_reset_board(struct ubsec_softc *sc) 1945{ 1946 volatile u_int32_t ctrl; 1947 1948 ctrl = READ_REG(sc, BS_CTRL); 1949 ctrl |= BS_CTRL_RESET; 1950 WRITE_REG(sc, BS_CTRL, ctrl); 1951 1952 /* 1953 * Wait aprox. 30 PCI clocks = 900 ns = 0.9 us 1954 */ 1955 DELAY(10); 1956} 1957 1958/* 1959 * Init Broadcom registers 1960 */ 1961static void 1962ubsec_init_board(struct ubsec_softc *sc) 1963{ 1964 u_int32_t ctrl; 1965 1966 ctrl = READ_REG(sc, BS_CTRL); 1967 ctrl &= ~(BS_CTRL_BE32 | BS_CTRL_BE64); 1968 ctrl |= BS_CTRL_LITTLE_ENDIAN | BS_CTRL_MCR1INT; 1969 1970 if (sc->sc_flags & (UBS_FLAGS_KEY|UBS_FLAGS_RNG)) 1971 ctrl |= BS_CTRL_MCR2INT; 1972 else 1973 ctrl &= ~BS_CTRL_MCR2INT; 1974 1975 if (sc->sc_flags & UBS_FLAGS_HWNORM) 1976 ctrl &= ~BS_CTRL_SWNORM; 1977 1978 WRITE_REG(sc, BS_CTRL, ctrl); 1979} 1980 1981/* 1982 * Init Broadcom PCI registers 1983 */ 1984static void 1985ubsec_init_pciregs(device_t dev) 1986{ 1987#if 0 1988 u_int32_t misc; 1989 1990 misc = pci_conf_read(pc, pa->pa_tag, BS_RTY_TOUT); 1991 misc = (misc & ~(UBS_PCI_RTY_MASK << UBS_PCI_RTY_SHIFT)) 1992 | ((UBS_DEF_RTY & 0xff) << UBS_PCI_RTY_SHIFT); 1993 misc = (misc & ~(UBS_PCI_TOUT_MASK << UBS_PCI_TOUT_SHIFT)) 1994 | ((UBS_DEF_TOUT & 0xff) << UBS_PCI_TOUT_SHIFT); 1995 pci_conf_write(pc, pa->pa_tag, BS_RTY_TOUT, misc); 1996#endif 1997 1998 /* 1999 * This will set the cache line size to 1, this will 2000 * force the BCM58xx chip just to do burst read/writes. 2001 * Cache line read/writes are to slow 2002 */ 2003 pci_write_config(dev, PCIR_CACHELNSZ, UBS_DEF_CACHELINE, 1); 2004} 2005 2006/* 2007 * Clean up after a chip crash. 2008 * It is assumed that the caller in splimp() 2009 */ 2010static void 2011ubsec_cleanchip(struct ubsec_softc *sc) 2012{ 2013 struct ubsec_q *q; 2014 2015 while (!SIMPLEQ_EMPTY(&sc->sc_qchip)) { 2016 q = SIMPLEQ_FIRST(&sc->sc_qchip); 2017 SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q, q_next); 2018 ubsec_free_q(sc, q); 2019 } 2020 sc->sc_nqchip = 0; 2021} 2022 2023/* 2024 * free a ubsec_q 2025 * It is assumed that the caller is within splimp(). 2026 */ 2027static int 2028ubsec_free_q(struct ubsec_softc *sc, struct ubsec_q *q) 2029{ 2030 struct ubsec_q *q2; 2031 struct cryptop *crp; 2032 int npkts; 2033 int i; 2034 2035 npkts = q->q_nstacked_mcrs; 2036 2037 for (i = 0; i < npkts; i++) { 2038 if(q->q_stacked_mcr[i]) { 2039 q2 = q->q_stacked_mcr[i]; 2040 2041 if ((q2->q_dst_m != NULL) && (q2->q_src_m != q2->q_dst_m)) 2042 m_freem(q2->q_dst_m); 2043 2044 crp = (struct cryptop *)q2->q_crp; 2045 2046 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q2, q_next); 2047 2048 crp->crp_etype = EFAULT; 2049 crypto_done(crp); 2050 } else { 2051 break; 2052 } 2053 } 2054 2055 /* 2056 * Free header MCR 2057 */ 2058 if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m)) 2059 m_freem(q->q_dst_m); 2060 2061 crp = (struct cryptop *)q->q_crp; 2062 2063 SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next); 2064 2065 crp->crp_etype = EFAULT; 2066 crypto_done(crp); 2067 return(0); 2068} 2069 2070/* 2071 * Routine to reset the chip and clean up. 2072 * It is assumed that the caller is in splimp() 2073 */ 2074static void 2075ubsec_totalreset(struct ubsec_softc *sc) 2076{ 2077 ubsec_reset_board(sc); 2078 ubsec_init_board(sc); 2079 ubsec_cleanchip(sc); 2080} 2081 2082static int 2083ubsec_dmamap_aligned(struct ubsec_operand *op) 2084{ 2085 int i; 2086 2087 for (i = 0; i < op->nsegs; i++) { 2088 if (op->segs[i].ds_addr & 3) 2089 return (0); 2090 if ((i != (op->nsegs - 1)) && 2091 (op->segs[i].ds_len & 3)) 2092 return (0); 2093 } 2094 return (1); 2095} 2096 2097static void 2098ubsec_kfree(struct ubsec_softc *sc, struct ubsec_q2 *q) 2099{ 2100 switch (q->q_type) { 2101 case UBS_CTXOP_MODEXP: { 2102 struct ubsec_q2_modexp *me = (struct ubsec_q2_modexp *)q; 2103 2104 ubsec_dma_free(sc, &me->me_q.q_mcr); 2105 ubsec_dma_free(sc, &me->me_q.q_ctx); 2106 ubsec_dma_free(sc, &me->me_M); 2107 ubsec_dma_free(sc, &me->me_E); 2108 ubsec_dma_free(sc, &me->me_C); 2109 ubsec_dma_free(sc, &me->me_epb); 2110 free(me, M_DEVBUF); 2111 break; 2112 } 2113 case UBS_CTXOP_RSAPRIV: { 2114 struct ubsec_q2_rsapriv *rp = (struct ubsec_q2_rsapriv *)q; 2115 2116 ubsec_dma_free(sc, &rp->rpr_q.q_mcr); 2117 ubsec_dma_free(sc, &rp->rpr_q.q_ctx); 2118 ubsec_dma_free(sc, &rp->rpr_msgin); 2119 ubsec_dma_free(sc, &rp->rpr_msgout); 2120 free(rp, M_DEVBUF); 2121 break; 2122 } 2123 default: 2124 device_printf(sc->sc_dev, "invalid kfree 0x%x\n", q->q_type); 2125 break; 2126 } 2127} 2128 2129static int 2130ubsec_kprocess(void *arg, struct cryptkop *krp, int hint) 2131{ 2132 struct ubsec_softc *sc = arg; 2133 int r; 2134 2135 if (krp == NULL || krp->krp_callback == NULL) 2136 return (EINVAL); 2137 2138 while (!SIMPLEQ_EMPTY(&sc->sc_q2free)) { 2139 struct ubsec_q2 *q; 2140 2141 q = SIMPLEQ_FIRST(&sc->sc_q2free); 2142 SIMPLEQ_REMOVE_HEAD(&sc->sc_q2free, q, q_next); 2143 ubsec_kfree(sc, q); 2144 } 2145 2146 switch (krp->krp_op) { 2147 case CRK_MOD_EXP: 2148 if (sc->sc_flags & UBS_FLAGS_HWNORM) 2149 r = ubsec_kprocess_modexp_hw(sc, krp, hint); 2150 else 2151 r = ubsec_kprocess_modexp_sw(sc, krp, hint); 2152 break; 2153 case CRK_MOD_EXP_CRT: 2154 return (ubsec_kprocess_rsapriv(sc, krp, hint)); 2155 default: 2156 device_printf(sc->sc_dev, "kprocess: invalid op 0x%x\n", 2157 krp->krp_op); 2158 krp->krp_status = EOPNOTSUPP; 2159 crypto_kdone(krp); 2160 return (0); 2161 } 2162 return (0); /* silence compiler */ 2163} 2164 2165/* 2166 * Start computation of cr[C] = (cr[M] ^ cr[E]) mod cr[N] (sw normalization) 2167 */ 2168static int 2169ubsec_kprocess_modexp_sw(struct ubsec_softc *sc, struct cryptkop *krp, int hint) 2170{ 2171 struct ubsec_q2_modexp *me; 2172 struct ubsec_mcr *mcr; 2173 struct ubsec_ctx_modexp *ctx; 2174 struct ubsec_pktbuf *epb; 2175 int err = 0; 2176 u_int nbits, normbits, mbits, shiftbits, ebits; 2177 2178 me = (struct ubsec_q2_modexp *)malloc(sizeof *me, M_DEVBUF, M_NOWAIT); 2179 if (me == NULL) { 2180 err = ENOMEM; 2181 goto errout; 2182 } 2183 bzero(me, sizeof *me); 2184 me->me_krp = krp; 2185 me->me_q.q_type = UBS_CTXOP_MODEXP; 2186 2187 nbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_N]); 2188 if (nbits <= 512) 2189 normbits = 512; 2190 else if (nbits <= 768) 2191 normbits = 768; 2192 else if (nbits <= 1024) 2193 normbits = 1024; 2194 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 1536) 2195 normbits = 1536; 2196 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 2048) 2197 normbits = 2048; 2198 else { 2199 err = E2BIG; 2200 goto errout; 2201 } 2202 2203 shiftbits = normbits - nbits; 2204 2205 me->me_modbits = nbits; 2206 me->me_shiftbits = shiftbits; 2207 me->me_normbits = normbits; 2208 2209 /* Sanity check: result bits must be >= true modulus bits. */ 2210 if (krp->krp_param[krp->krp_iparams].crp_nbits < nbits) { 2211 err = ERANGE; 2212 goto errout; 2213 } 2214 2215 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr), 2216 &me->me_q.q_mcr, 0)) { 2217 err = ENOMEM; 2218 goto errout; 2219 } 2220 mcr = (struct ubsec_mcr *)me->me_q.q_mcr.dma_vaddr; 2221 2222 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_modexp), 2223 &me->me_q.q_ctx, 0)) { 2224 err = ENOMEM; 2225 goto errout; 2226 } 2227 2228 mbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_M]); 2229 if (mbits > nbits) { 2230 err = E2BIG; 2231 goto errout; 2232 } 2233 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_M, 0)) { 2234 err = ENOMEM; 2235 goto errout; 2236 } 2237 ubsec_kshift_r(shiftbits, 2238 krp->krp_param[UBS_MODEXP_PAR_M].crp_p, mbits, 2239 me->me_M.dma_vaddr, normbits); 2240 2241 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_C, 0)) { 2242 err = ENOMEM; 2243 goto errout; 2244 } 2245 bzero(me->me_C.dma_vaddr, me->me_C.dma_size); 2246 2247 ebits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_E]); 2248 if (ebits > nbits) { 2249 err = E2BIG; 2250 goto errout; 2251 } 2252 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_E, 0)) { 2253 err = ENOMEM; 2254 goto errout; 2255 } 2256 ubsec_kshift_r(shiftbits, 2257 krp->krp_param[UBS_MODEXP_PAR_E].crp_p, ebits, 2258 me->me_E.dma_vaddr, normbits); 2259 2260 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_pktbuf), 2261 &me->me_epb, 0)) { 2262 err = ENOMEM; 2263 goto errout; 2264 } 2265 epb = (struct ubsec_pktbuf *)me->me_epb.dma_vaddr; 2266 epb->pb_addr = htole32(me->me_E.dma_paddr); 2267 epb->pb_next = 0; 2268 epb->pb_len = htole32(normbits / 8); 2269 2270#ifdef UBSEC_DEBUG 2271 if (ubsec_debug) { 2272 printf("Epb "); 2273 ubsec_dump_pb(epb); 2274 } 2275#endif 2276 2277 mcr->mcr_pkts = htole16(1); 2278 mcr->mcr_flags = 0; 2279 mcr->mcr_cmdctxp = htole32(me->me_q.q_ctx.dma_paddr); 2280 mcr->mcr_reserved = 0; 2281 mcr->mcr_pktlen = 0; 2282 2283 mcr->mcr_ipktbuf.pb_addr = htole32(me->me_M.dma_paddr); 2284 mcr->mcr_ipktbuf.pb_len = htole32(normbits / 8); 2285 mcr->mcr_ipktbuf.pb_next = htole32(me->me_epb.dma_paddr); 2286 2287 mcr->mcr_opktbuf.pb_addr = htole32(me->me_C.dma_paddr); 2288 mcr->mcr_opktbuf.pb_next = 0; 2289 mcr->mcr_opktbuf.pb_len = htole32(normbits / 8); 2290 2291#ifdef DIAGNOSTIC 2292 /* Misaligned output buffer will hang the chip. */ 2293 if ((letoh32(mcr->mcr_opktbuf.pb_addr) & 3) != 0) 2294 panic("%s: modexp invalid addr 0x%x\n", 2295 device_get_nameunit(sc->sc_dev), 2296 letoh32(mcr->mcr_opktbuf.pb_addr)); 2297 if ((letoh32(mcr->mcr_opktbuf.pb_len) & 3) != 0) 2298 panic("%s: modexp invalid len 0x%x\n", 2299 device_get_nameunit(sc->sc_dev), 2300 letoh32(mcr->mcr_opktbuf.pb_len)); 2301#endif 2302 2303 ctx = (struct ubsec_ctx_modexp *)me->me_q.q_ctx.dma_vaddr; 2304 bzero(ctx, sizeof(*ctx)); 2305 ubsec_kshift_r(shiftbits, 2306 krp->krp_param[UBS_MODEXP_PAR_N].crp_p, nbits, 2307 ctx->me_N, normbits); 2308 ctx->me_len = htole16((normbits / 8) + (4 * sizeof(u_int16_t))); 2309 ctx->me_op = htole16(UBS_CTXOP_MODEXP); 2310 ctx->me_E_len = htole16(nbits); 2311 ctx->me_N_len = htole16(nbits); 2312 2313#ifdef UBSEC_DEBUG 2314 if (ubsec_debug) { 2315 ubsec_dump_mcr(mcr); 2316 ubsec_dump_ctx2((struct ubsec_ctx_keyop *)ctx); 2317 } 2318#endif 2319 2320 /* 2321 * ubsec_feed2 will sync mcr and ctx, we just need to sync 2322 * everything else. 2323 */ 2324 ubsec_dma_sync(&me->me_M, BUS_DMASYNC_PREWRITE); 2325 ubsec_dma_sync(&me->me_E, BUS_DMASYNC_PREWRITE); 2326 ubsec_dma_sync(&me->me_C, BUS_DMASYNC_PREREAD); 2327 ubsec_dma_sync(&me->me_epb, BUS_DMASYNC_PREWRITE); 2328 2329 /* Enqueue and we're done... */ 2330 mtx_lock(&sc->sc_mcr2lock); 2331 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &me->me_q, q_next); 2332 ubsec_feed2(sc); 2333 ubsecstats.hst_modexp++; 2334 mtx_unlock(&sc->sc_mcr2lock); 2335 2336 return (0); 2337 2338errout: 2339 if (me != NULL) { 2340 if (me->me_q.q_mcr.dma_map != NULL) 2341 ubsec_dma_free(sc, &me->me_q.q_mcr); 2342 if (me->me_q.q_ctx.dma_map != NULL) { 2343 bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size); 2344 ubsec_dma_free(sc, &me->me_q.q_ctx); 2345 } 2346 if (me->me_M.dma_map != NULL) { 2347 bzero(me->me_M.dma_vaddr, me->me_M.dma_size); 2348 ubsec_dma_free(sc, &me->me_M); 2349 } 2350 if (me->me_E.dma_map != NULL) { 2351 bzero(me->me_E.dma_vaddr, me->me_E.dma_size); 2352 ubsec_dma_free(sc, &me->me_E); 2353 } 2354 if (me->me_C.dma_map != NULL) { 2355 bzero(me->me_C.dma_vaddr, me->me_C.dma_size); 2356 ubsec_dma_free(sc, &me->me_C); 2357 } 2358 if (me->me_epb.dma_map != NULL) 2359 ubsec_dma_free(sc, &me->me_epb); 2360 free(me, M_DEVBUF); 2361 } 2362 krp->krp_status = err; 2363 crypto_kdone(krp); 2364 return (0); 2365} 2366 2367/* 2368 * Start computation of cr[C] = (cr[M] ^ cr[E]) mod cr[N] (hw normalization) 2369 */ 2370static int 2371ubsec_kprocess_modexp_hw(struct ubsec_softc *sc, struct cryptkop *krp, int hint) 2372{ 2373 struct ubsec_q2_modexp *me; 2374 struct ubsec_mcr *mcr; 2375 struct ubsec_ctx_modexp *ctx; 2376 struct ubsec_pktbuf *epb; 2377 int err = 0; 2378 u_int nbits, normbits, mbits, shiftbits, ebits; 2379 2380 me = (struct ubsec_q2_modexp *)malloc(sizeof *me, M_DEVBUF, M_NOWAIT); 2381 if (me == NULL) { 2382 err = ENOMEM; 2383 goto errout; 2384 } 2385 bzero(me, sizeof *me); 2386 me->me_krp = krp; 2387 me->me_q.q_type = UBS_CTXOP_MODEXP; 2388 2389 nbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_N]); 2390 if (nbits <= 512) 2391 normbits = 512; 2392 else if (nbits <= 768) 2393 normbits = 768; 2394 else if (nbits <= 1024) 2395 normbits = 1024; 2396 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 1536) 2397 normbits = 1536; 2398 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 2048) 2399 normbits = 2048; 2400 else { 2401 err = E2BIG; 2402 goto errout; 2403 } 2404 2405 shiftbits = normbits - nbits; 2406 2407 /* XXX ??? */ 2408 me->me_modbits = nbits; 2409 me->me_shiftbits = shiftbits; 2410 me->me_normbits = normbits; 2411 2412 /* Sanity check: result bits must be >= true modulus bits. */ 2413 if (krp->krp_param[krp->krp_iparams].crp_nbits < nbits) { 2414 err = ERANGE; 2415 goto errout; 2416 } 2417 2418 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr), 2419 &me->me_q.q_mcr, 0)) { 2420 err = ENOMEM; 2421 goto errout; 2422 } 2423 mcr = (struct ubsec_mcr *)me->me_q.q_mcr.dma_vaddr; 2424 2425 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_modexp), 2426 &me->me_q.q_ctx, 0)) { 2427 err = ENOMEM; 2428 goto errout; 2429 } 2430 2431 mbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_M]); 2432 if (mbits > nbits) { 2433 err = E2BIG; 2434 goto errout; 2435 } 2436 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_M, 0)) { 2437 err = ENOMEM; 2438 goto errout; 2439 } 2440 bzero(me->me_M.dma_vaddr, normbits / 8); 2441 bcopy(krp->krp_param[UBS_MODEXP_PAR_M].crp_p, 2442 me->me_M.dma_vaddr, (mbits + 7) / 8); 2443 2444 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_C, 0)) { 2445 err = ENOMEM; 2446 goto errout; 2447 } 2448 bzero(me->me_C.dma_vaddr, me->me_C.dma_size); 2449 2450 ebits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_E]); 2451 if (ebits > nbits) { 2452 err = E2BIG; 2453 goto errout; 2454 } 2455 if (ubsec_dma_malloc(sc, normbits / 8, &me->me_E, 0)) { 2456 err = ENOMEM; 2457 goto errout; 2458 } 2459 bzero(me->me_E.dma_vaddr, normbits / 8); 2460 bcopy(krp->krp_param[UBS_MODEXP_PAR_E].crp_p, 2461 me->me_E.dma_vaddr, (ebits + 7) / 8); 2462 2463 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_pktbuf), 2464 &me->me_epb, 0)) { 2465 err = ENOMEM; 2466 goto errout; 2467 } 2468 epb = (struct ubsec_pktbuf *)me->me_epb.dma_vaddr; 2469 epb->pb_addr = htole32(me->me_E.dma_paddr); 2470 epb->pb_next = 0; 2471 epb->pb_len = htole32((ebits + 7) / 8); 2472 2473#ifdef UBSEC_DEBUG 2474 if (ubsec_debug) { 2475 printf("Epb "); 2476 ubsec_dump_pb(epb); 2477 } 2478#endif 2479 2480 mcr->mcr_pkts = htole16(1); 2481 mcr->mcr_flags = 0; 2482 mcr->mcr_cmdctxp = htole32(me->me_q.q_ctx.dma_paddr); 2483 mcr->mcr_reserved = 0; 2484 mcr->mcr_pktlen = 0; 2485 2486 mcr->mcr_ipktbuf.pb_addr = htole32(me->me_M.dma_paddr); 2487 mcr->mcr_ipktbuf.pb_len = htole32(normbits / 8); 2488 mcr->mcr_ipktbuf.pb_next = htole32(me->me_epb.dma_paddr); 2489 2490 mcr->mcr_opktbuf.pb_addr = htole32(me->me_C.dma_paddr); 2491 mcr->mcr_opktbuf.pb_next = 0; 2492 mcr->mcr_opktbuf.pb_len = htole32(normbits / 8); 2493 2494#ifdef DIAGNOSTIC 2495 /* Misaligned output buffer will hang the chip. */ 2496 if ((letoh32(mcr->mcr_opktbuf.pb_addr) & 3) != 0) 2497 panic("%s: modexp invalid addr 0x%x\n", 2498 device_get_nameunit(sc->sc_dev), 2499 letoh32(mcr->mcr_opktbuf.pb_addr)); 2500 if ((letoh32(mcr->mcr_opktbuf.pb_len) & 3) != 0) 2501 panic("%s: modexp invalid len 0x%x\n", 2502 device_get_nameunit(sc->sc_dev), 2503 letoh32(mcr->mcr_opktbuf.pb_len)); 2504#endif 2505 2506 ctx = (struct ubsec_ctx_modexp *)me->me_q.q_ctx.dma_vaddr; 2507 bzero(ctx, sizeof(*ctx)); 2508 bcopy(krp->krp_param[UBS_MODEXP_PAR_N].crp_p, ctx->me_N, 2509 (nbits + 7) / 8); 2510 ctx->me_len = htole16((normbits / 8) + (4 * sizeof(u_int16_t))); 2511 ctx->me_op = htole16(UBS_CTXOP_MODEXP); 2512 ctx->me_E_len = htole16(ebits); 2513 ctx->me_N_len = htole16(nbits); 2514 2515#ifdef UBSEC_DEBUG 2516 if (ubsec_debug) { 2517 ubsec_dump_mcr(mcr); 2518 ubsec_dump_ctx2((struct ubsec_ctx_keyop *)ctx); 2519 } 2520#endif 2521 2522 /* 2523 * ubsec_feed2 will sync mcr and ctx, we just need to sync 2524 * everything else. 2525 */ 2526 ubsec_dma_sync(&me->me_M, BUS_DMASYNC_PREWRITE); 2527 ubsec_dma_sync(&me->me_E, BUS_DMASYNC_PREWRITE); 2528 ubsec_dma_sync(&me->me_C, BUS_DMASYNC_PREREAD); 2529 ubsec_dma_sync(&me->me_epb, BUS_DMASYNC_PREWRITE); 2530 2531 /* Enqueue and we're done... */ 2532 mtx_lock(&sc->sc_mcr2lock); 2533 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &me->me_q, q_next); 2534 ubsec_feed2(sc); 2535 mtx_unlock(&sc->sc_mcr2lock); 2536 2537 return (0); 2538 2539errout: 2540 if (me != NULL) { 2541 if (me->me_q.q_mcr.dma_map != NULL) 2542 ubsec_dma_free(sc, &me->me_q.q_mcr); 2543 if (me->me_q.q_ctx.dma_map != NULL) { 2544 bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size); 2545 ubsec_dma_free(sc, &me->me_q.q_ctx); 2546 } 2547 if (me->me_M.dma_map != NULL) { 2548 bzero(me->me_M.dma_vaddr, me->me_M.dma_size); 2549 ubsec_dma_free(sc, &me->me_M); 2550 } 2551 if (me->me_E.dma_map != NULL) { 2552 bzero(me->me_E.dma_vaddr, me->me_E.dma_size); 2553 ubsec_dma_free(sc, &me->me_E); 2554 } 2555 if (me->me_C.dma_map != NULL) { 2556 bzero(me->me_C.dma_vaddr, me->me_C.dma_size); 2557 ubsec_dma_free(sc, &me->me_C); 2558 } 2559 if (me->me_epb.dma_map != NULL) 2560 ubsec_dma_free(sc, &me->me_epb); 2561 free(me, M_DEVBUF); 2562 } 2563 krp->krp_status = err; 2564 crypto_kdone(krp); 2565 return (0); 2566} 2567 2568static int 2569ubsec_kprocess_rsapriv(struct ubsec_softc *sc, struct cryptkop *krp, int hint) 2570{ 2571 struct ubsec_q2_rsapriv *rp = NULL; 2572 struct ubsec_mcr *mcr; 2573 struct ubsec_ctx_rsapriv *ctx; 2574 int err = 0; 2575 u_int padlen, msglen; 2576 2577 msglen = ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_P]); 2578 padlen = ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_Q]); 2579 if (msglen > padlen) 2580 padlen = msglen; 2581 2582 if (padlen <= 256) 2583 padlen = 256; 2584 else if (padlen <= 384) 2585 padlen = 384; 2586 else if (padlen <= 512) 2587 padlen = 512; 2588 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && padlen <= 768) 2589 padlen = 768; 2590 else if (sc->sc_flags & UBS_FLAGS_BIGKEY && padlen <= 1024) 2591 padlen = 1024; 2592 else { 2593 err = E2BIG; 2594 goto errout; 2595 } 2596 2597 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_DP]) > padlen) { 2598 err = E2BIG; 2599 goto errout; 2600 } 2601 2602 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_DQ]) > padlen) { 2603 err = E2BIG; 2604 goto errout; 2605 } 2606 2607 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_PINV]) > padlen) { 2608 err = E2BIG; 2609 goto errout; 2610 } 2611 2612 rp = (struct ubsec_q2_rsapriv *)malloc(sizeof *rp, M_DEVBUF, M_NOWAIT); 2613 if (rp == NULL) 2614 return (ENOMEM); 2615 bzero(rp, sizeof *rp); 2616 rp->rpr_krp = krp; 2617 rp->rpr_q.q_type = UBS_CTXOP_RSAPRIV; 2618 2619 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr), 2620 &rp->rpr_q.q_mcr, 0)) { 2621 err = ENOMEM; 2622 goto errout; 2623 } 2624 mcr = (struct ubsec_mcr *)rp->rpr_q.q_mcr.dma_vaddr; 2625 2626 if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_rsapriv), 2627 &rp->rpr_q.q_ctx, 0)) { 2628 err = ENOMEM; 2629 goto errout; 2630 } 2631 ctx = (struct ubsec_ctx_rsapriv *)rp->rpr_q.q_ctx.dma_vaddr; 2632 bzero(ctx, sizeof *ctx); 2633 2634 /* Copy in p */ 2635 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_P].crp_p, 2636 &ctx->rpr_buf[0 * (padlen / 8)], 2637 (krp->krp_param[UBS_RSAPRIV_PAR_P].crp_nbits + 7) / 8); 2638 2639 /* Copy in q */ 2640 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_Q].crp_p, 2641 &ctx->rpr_buf[1 * (padlen / 8)], 2642 (krp->krp_param[UBS_RSAPRIV_PAR_Q].crp_nbits + 7) / 8); 2643 2644 /* Copy in dp */ 2645 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_DP].crp_p, 2646 &ctx->rpr_buf[2 * (padlen / 8)], 2647 (krp->krp_param[UBS_RSAPRIV_PAR_DP].crp_nbits + 7) / 8); 2648 2649 /* Copy in dq */ 2650 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_DQ].crp_p, 2651 &ctx->rpr_buf[3 * (padlen / 8)], 2652 (krp->krp_param[UBS_RSAPRIV_PAR_DQ].crp_nbits + 7) / 8); 2653 2654 /* Copy in pinv */ 2655 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_PINV].crp_p, 2656 &ctx->rpr_buf[4 * (padlen / 8)], 2657 (krp->krp_param[UBS_RSAPRIV_PAR_PINV].crp_nbits + 7) / 8); 2658 2659 msglen = padlen * 2; 2660 2661 /* Copy in input message (aligned buffer/length). */ 2662 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_MSGIN]) > msglen) { 2663 /* Is this likely? */ 2664 err = E2BIG; 2665 goto errout; 2666 } 2667 if (ubsec_dma_malloc(sc, (msglen + 7) / 8, &rp->rpr_msgin, 0)) { 2668 err = ENOMEM; 2669 goto errout; 2670 } 2671 bzero(rp->rpr_msgin.dma_vaddr, (msglen + 7) / 8); 2672 bcopy(krp->krp_param[UBS_RSAPRIV_PAR_MSGIN].crp_p, 2673 rp->rpr_msgin.dma_vaddr, 2674 (krp->krp_param[UBS_RSAPRIV_PAR_MSGIN].crp_nbits + 7) / 8); 2675 2676 /* Prepare space for output message (aligned buffer/length). */ 2677 if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT]) < msglen) { 2678 /* Is this likely? */ 2679 err = E2BIG; 2680 goto errout; 2681 } 2682 if (ubsec_dma_malloc(sc, (msglen + 7) / 8, &rp->rpr_msgout, 0)) { 2683 err = ENOMEM; 2684 goto errout; 2685 } 2686 bzero(rp->rpr_msgout.dma_vaddr, (msglen + 7) / 8); 2687 2688 mcr->mcr_pkts = htole16(1); 2689 mcr->mcr_flags = 0; 2690 mcr->mcr_cmdctxp = htole32(rp->rpr_q.q_ctx.dma_paddr); 2691 mcr->mcr_ipktbuf.pb_addr = htole32(rp->rpr_msgin.dma_paddr); 2692 mcr->mcr_ipktbuf.pb_next = 0; 2693 mcr->mcr_ipktbuf.pb_len = htole32(rp->rpr_msgin.dma_size); 2694 mcr->mcr_reserved = 0; 2695 mcr->mcr_pktlen = htole16(msglen); 2696 mcr->mcr_opktbuf.pb_addr = htole32(rp->rpr_msgout.dma_paddr); 2697 mcr->mcr_opktbuf.pb_next = 0; 2698 mcr->mcr_opktbuf.pb_len = htole32(rp->rpr_msgout.dma_size); 2699 2700#ifdef DIAGNOSTIC 2701 if (rp->rpr_msgin.dma_paddr & 3 || rp->rpr_msgin.dma_size & 3) { 2702 panic("%s: rsapriv: invalid msgin %x(0x%jx)", 2703 device_get_nameunit(sc->sc_dev), 2704 rp->rpr_msgin.dma_paddr, (uintmax_t)rp->rpr_msgin.dma_size); 2705 } 2706 if (rp->rpr_msgout.dma_paddr & 3 || rp->rpr_msgout.dma_size & 3) { 2707 panic("%s: rsapriv: invalid msgout %x(0x%jx)", 2708 device_get_nameunit(sc->sc_dev), 2709 rp->rpr_msgout.dma_paddr, (uintmax_t)rp->rpr_msgout.dma_size); 2710 } 2711#endif 2712 2713 ctx->rpr_len = (sizeof(u_int16_t) * 4) + (5 * (padlen / 8)); 2714 ctx->rpr_op = htole16(UBS_CTXOP_RSAPRIV); 2715 ctx->rpr_q_len = htole16(padlen); 2716 ctx->rpr_p_len = htole16(padlen); 2717 2718 /* 2719 * ubsec_feed2 will sync mcr and ctx, we just need to sync 2720 * everything else. 2721 */ 2722 ubsec_dma_sync(&rp->rpr_msgin, BUS_DMASYNC_PREWRITE); 2723 ubsec_dma_sync(&rp->rpr_msgout, BUS_DMASYNC_PREREAD); 2724 2725 /* Enqueue and we're done... */ 2726 mtx_lock(&sc->sc_mcr2lock); 2727 SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &rp->rpr_q, q_next); 2728 ubsec_feed2(sc); 2729 ubsecstats.hst_modexpcrt++; 2730 mtx_unlock(&sc->sc_mcr2lock); 2731 return (0); 2732 2733errout: 2734 if (rp != NULL) { 2735 if (rp->rpr_q.q_mcr.dma_map != NULL) 2736 ubsec_dma_free(sc, &rp->rpr_q.q_mcr); 2737 if (rp->rpr_msgin.dma_map != NULL) { 2738 bzero(rp->rpr_msgin.dma_vaddr, rp->rpr_msgin.dma_size); 2739 ubsec_dma_free(sc, &rp->rpr_msgin); 2740 } 2741 if (rp->rpr_msgout.dma_map != NULL) { 2742 bzero(rp->rpr_msgout.dma_vaddr, rp->rpr_msgout.dma_size); 2743 ubsec_dma_free(sc, &rp->rpr_msgout); 2744 } 2745 free(rp, M_DEVBUF); 2746 } 2747 krp->krp_status = err; 2748 crypto_kdone(krp); 2749 return (0); 2750} 2751 2752#ifdef UBSEC_DEBUG 2753static void 2754ubsec_dump_pb(volatile struct ubsec_pktbuf *pb) 2755{ 2756 printf("addr 0x%x (0x%x) next 0x%x\n", 2757 pb->pb_addr, pb->pb_len, pb->pb_next); 2758} 2759 2760static void 2761ubsec_dump_ctx2(struct ubsec_ctx_keyop *c) 2762{ 2763 printf("CTX (0x%x):\n", c->ctx_len); 2764 switch (letoh16(c->ctx_op)) { 2765 case UBS_CTXOP_RNGBYPASS: 2766 case UBS_CTXOP_RNGSHA1: 2767 break; 2768 case UBS_CTXOP_MODEXP: 2769 { 2770 struct ubsec_ctx_modexp *cx = (void *)c; 2771 int i, len; 2772 2773 printf(" Elen %u, Nlen %u\n", 2774 letoh16(cx->me_E_len), letoh16(cx->me_N_len)); 2775 len = (cx->me_N_len + 7)/8; 2776 for (i = 0; i < len; i++) 2777 printf("%s%02x", (i == 0) ? " N: " : ":", cx->me_N[i]); 2778 printf("\n"); 2779 break; 2780 } 2781 default: 2782 printf("unknown context: %x\n", c->ctx_op); 2783 } 2784 printf("END CTX\n"); 2785} 2786 2787static void 2788ubsec_dump_mcr(struct ubsec_mcr *mcr) 2789{ 2790 volatile struct ubsec_mcr_add *ma; 2791 int i; 2792 2793 printf("MCR:\n"); 2794 printf(" pkts: %u, flags 0x%x\n", 2795 letoh16(mcr->mcr_pkts), letoh16(mcr->mcr_flags)); 2796 ma = (volatile struct ubsec_mcr_add *)&mcr->mcr_cmdctxp; 2797 for (i = 0; i < letoh16(mcr->mcr_pkts); i++) { 2798 printf(" %d: ctx 0x%x len 0x%x rsvd 0x%x\n", i, 2799 letoh32(ma->mcr_cmdctxp), letoh16(ma->mcr_pktlen), 2800 letoh16(ma->mcr_reserved)); 2801 printf(" %d: ipkt ", i); 2802 ubsec_dump_pb(&ma->mcr_ipktbuf); 2803 printf(" %d: opkt ", i); 2804 ubsec_dump_pb(&ma->mcr_opktbuf); 2805 ma++; 2806 } 2807 printf("END MCR\n"); 2808} 2809#endif /* UBSEC_DEBUG */ 2810 2811/* 2812 * Return the number of significant bits of a big number. 2813 */ 2814static int 2815ubsec_ksigbits(struct crparam *cr) 2816{ 2817 u_int plen = (cr->crp_nbits + 7) / 8; 2818 int i, sig = plen * 8; 2819 u_int8_t c, *p = cr->crp_p; 2820 2821 for (i = plen - 1; i >= 0; i--) { 2822 c = p[i]; 2823 if (c != 0) { 2824 while ((c & 0x80) == 0) { 2825 sig--; 2826 c <<= 1; 2827 } 2828 break; 2829 } 2830 sig -= 8; 2831 } 2832 return (sig); 2833} 2834 2835static void 2836ubsec_kshift_r( 2837 u_int shiftbits, 2838 u_int8_t *src, u_int srcbits, 2839 u_int8_t *dst, u_int dstbits) 2840{ 2841 u_int slen, dlen; 2842 int i, si, di, n; 2843 2844 slen = (srcbits + 7) / 8; 2845 dlen = (dstbits + 7) / 8; 2846 2847 for (i = 0; i < slen; i++) 2848 dst[i] = src[i]; 2849 for (i = 0; i < dlen - slen; i++) 2850 dst[slen + i] = 0; 2851 2852 n = shiftbits / 8; 2853 if (n != 0) { 2854 si = dlen - n - 1; 2855 di = dlen - 1; 2856 while (si >= 0) 2857 dst[di--] = dst[si--]; 2858 while (di >= 0) 2859 dst[di--] = 0; 2860 } 2861 2862 n = shiftbits % 8; 2863 if (n != 0) { 2864 for (i = dlen - 1; i > 0; i--) 2865 dst[i] = (dst[i] << n) | 2866 (dst[i - 1] >> (8 - n)); 2867 dst[0] = dst[0] << n; 2868 } 2869} 2870 2871static void 2872ubsec_kshift_l( 2873 u_int shiftbits, 2874 u_int8_t *src, u_int srcbits, 2875 u_int8_t *dst, u_int dstbits) 2876{ 2877 int slen, dlen, i, n; 2878 2879 slen = (srcbits + 7) / 8; 2880 dlen = (dstbits + 7) / 8; 2881 2882 n = shiftbits / 8; 2883 for (i = 0; i < slen; i++) 2884 dst[i] = src[i + n]; 2885 for (i = 0; i < dlen - slen; i++) 2886 dst[slen + i] = 0; 2887 2888 n = shiftbits % 8; 2889 if (n != 0) { 2890 for (i = 0; i < (dlen - 1); i++) 2891 dst[i] = (dst[i] >> n) | (dst[i + 1] << (8 - n)); 2892 dst[dlen - 1] = dst[dlen - 1] >> n; 2893 } 2894} 2895