diff options
Diffstat (limited to 'package/ubsec_ssb/src/openbsd/ubsec.c')
| -rw-r--r-- | package/ubsec_ssb/src/openbsd/ubsec.c | 2511 |
1 files changed, 2511 insertions, 0 deletions
diff --git a/package/ubsec_ssb/src/openbsd/ubsec.c b/package/ubsec_ssb/src/openbsd/ubsec.c new file mode 100644 index 0000000..f0716d8 --- /dev/null +++ b/package/ubsec_ssb/src/openbsd/ubsec.c @@ -0,0 +1,2511 @@ +/* $OpenBSD: ubsec.c,v 1.140 2007/10/01 15:34:48 krw Exp $ */ + +/* + * Copyright (c) 2000 Jason L. Wright (jason@thought.net) + * Copyright (c) 2000 Theo de Raadt (deraadt@openbsd.org) + * Copyright (c) 2001 Patrik Lindergren (patrik@ipunplugged.com) + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * Effort sponsored in part by the Defense Advanced Research Projects + * Agency (DARPA) and Air Force Research Laboratory, Air Force + * Materiel Command, USAF, under agreement number F30602-01-2-0537. + * + */ + +#undef UBSEC_DEBUG + +/* + * uBsec 5[56]01, 58xx hardware crypto accelerator + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/proc.h> +#include <sys/errno.h> +#include <sys/malloc.h> +#include <sys/kernel.h> +#include <sys/mbuf.h> +#include <sys/device.h> +#include <sys/queue.h> + +#include <crypto/cryptodev.h> +#include <crypto/cryptosoft.h> +#include <dev/rndvar.h> +#include <crypto/md5.h> +#include <crypto/sha1.h> + +#include <dev/pci/pcireg.h> +#include <dev/pci/pcivar.h> +#include <dev/pci/pcidevs.h> + +#include <dev/pci/ubsecreg.h> +#include <dev/pci/ubsecvar.h> + +/* + * Prototypes and count for the pci_device structure + */ +int ubsec_probe(struct device *, void *, void *); +void ubsec_attach(struct device *, struct device *, void *); +void ubsec_reset_board(struct ubsec_softc *); +void ubsec_init_board(struct ubsec_softc *); +void ubsec_init_pciregs(struct pci_attach_args *pa); +void ubsec_cleanchip(struct ubsec_softc *); +void ubsec_totalreset(struct ubsec_softc *); +int ubsec_free_q(struct ubsec_softc*, struct ubsec_q *); + +struct cfattach ubsec_ca = { + sizeof(struct ubsec_softc), ubsec_probe, ubsec_attach, +}; + +struct cfdriver ubsec_cd = { + 0, "ubsec", DV_DULL +}; + +int ubsec_intr(void *); +int ubsec_newsession(u_int32_t *, struct cryptoini *); +int ubsec_freesession(u_int64_t); +int ubsec_process(struct cryptop *); +void ubsec_callback(struct ubsec_softc *, struct ubsec_q *); +void ubsec_feed(struct ubsec_softc *); +void ubsec_mcopy(struct mbuf *, struct mbuf *, int, int); +void ubsec_callback2(struct ubsec_softc *, struct ubsec_q2 *); +void ubsec_feed2(struct ubsec_softc *); +void ubsec_rng(void *); +int ubsec_dma_malloc(struct ubsec_softc *, bus_size_t, + struct ubsec_dma_alloc *, int); +void ubsec_dma_free(struct ubsec_softc *, struct ubsec_dma_alloc *); +int ubsec_dmamap_aligned(bus_dmamap_t); + +int ubsec_kprocess(struct cryptkop *); +struct ubsec_softc *ubsec_kfind(struct cryptkop *); +int ubsec_kprocess_modexp_sw(struct ubsec_softc *, struct cryptkop *); +int ubsec_kprocess_modexp_hw(struct ubsec_softc *, struct cryptkop *); +int ubsec_kprocess_rsapriv(struct ubsec_softc *, struct cryptkop *); +void ubsec_kfree(struct ubsec_softc *, struct ubsec_q2 *); +int ubsec_ksigbits(struct crparam *); +void ubsec_kshift_r(u_int, u_int8_t *, u_int, u_int8_t *, u_int); +void ubsec_kshift_l(u_int, u_int8_t *, u_int, u_int8_t *, u_int); + +/* DEBUG crap... */ +void ubsec_dump_pb(struct ubsec_pktbuf *); +void ubsec_dump_mcr(struct ubsec_mcr *); +void ubsec_dump_ctx2(struct ubsec_ctx_keyop *); + +#define READ_REG(sc,r) \ + bus_space_read_4((sc)->sc_st, (sc)->sc_sh, (r)) + +#define WRITE_REG(sc,reg,val) \ + bus_space_write_4((sc)->sc_st, (sc)->sc_sh, reg, val) + +#define SWAP32(x) (x) = htole32(ntohl((x))) +#define HTOLE32(x) (x) = htole32(x) + + +struct ubsec_stats ubsecstats; + +const struct pci_matchid ubsec_devices[] = { + { PCI_VENDOR_BLUESTEEL, PCI_PRODUCT_BLUESTEEL_5501 }, + { PCI_VENDOR_BLUESTEEL, PCI_PRODUCT_BLUESTEEL_5601 }, + { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_5801 }, + { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_5802 }, + { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_5805 }, + { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_5820 }, + { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_5821 }, + { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_5822 }, + { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_5823 }, + { PCI_VENDOR_SUN, PCI_PRODUCT_SUN_SCA1K }, + { PCI_VENDOR_SUN, PCI_PRODUCT_SUN_5821 }, +}; + +int +ubsec_probe(struct device *parent, void *match, void *aux) +{ + return (pci_matchbyid((struct pci_attach_args *)aux, ubsec_devices, + sizeof(ubsec_devices)/sizeof(ubsec_devices[0]))); +} + +void +ubsec_attach(struct device *parent, struct device *self, void *aux) +{ + struct ubsec_softc *sc = (struct ubsec_softc *)self; + struct pci_attach_args *pa = aux; + pci_chipset_tag_t pc = pa->pa_pc; + pci_intr_handle_t ih; + const char *intrstr = NULL; + struct ubsec_dma *dmap; + bus_size_t iosize; + u_int32_t i; + int algs[CRYPTO_ALGORITHM_MAX + 1]; + int kalgs[CRK_ALGORITHM_MAX + 1]; + + SIMPLEQ_INIT(&sc->sc_queue); + SIMPLEQ_INIT(&sc->sc_qchip); + SIMPLEQ_INIT(&sc->sc_queue2); + SIMPLEQ_INIT(&sc->sc_qchip2); + SIMPLEQ_INIT(&sc->sc_q2free); + + sc->sc_statmask = BS_STAT_MCR1_DONE | BS_STAT_DMAERR; + + if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BLUESTEEL && + PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BLUESTEEL_5601) + sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG; + + if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROADCOM && + (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_5802 || + PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_5805)) + sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG; + + if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROADCOM && + (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_5820 || + PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_5822 || + PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_5823)) + sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG | + UBS_FLAGS_LONGCTX | UBS_FLAGS_HWNORM | UBS_FLAGS_BIGKEY; + + if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_BROADCOM && + PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BROADCOM_5821) || + (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && + (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_SCA1K || + PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_5821))) { + sc->sc_statmask |= BS_STAT_MCR1_ALLEMPTY | + BS_STAT_MCR2_ALLEMPTY; + sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG | + UBS_FLAGS_LONGCTX | UBS_FLAGS_HWNORM | UBS_FLAGS_BIGKEY; + } + + if (pci_mapreg_map(pa, BS_BAR, PCI_MAPREG_TYPE_MEM, 0, + &sc->sc_st, &sc->sc_sh, NULL, &iosize, 0)) { + printf(": can't find mem space\n"); + return; + } + sc->sc_dmat = pa->pa_dmat; + + if (pci_intr_map(pa, &ih)) { + printf(": couldn't map interrupt\n"); + bus_space_unmap(sc->sc_st, sc->sc_sh, iosize); + return; + } + intrstr = pci_intr_string(pc, ih); + sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, ubsec_intr, sc, + self->dv_xname); + if (sc->sc_ih == NULL) { + printf(": couldn't establish interrupt"); + if (intrstr != NULL) + printf(" at %s", intrstr); + printf("\n"); + bus_space_unmap(sc->sc_st, sc->sc_sh, iosize); + return; + } + + sc->sc_cid = crypto_get_driverid(0); + if (sc->sc_cid < 0) { + pci_intr_disestablish(pc, sc->sc_ih); + bus_space_unmap(sc->sc_st, sc->sc_sh, iosize); + return; + } + + SIMPLEQ_INIT(&sc->sc_freequeue); + dmap = sc->sc_dmaa; + for (i = 0; i < UBS_MAX_NQUEUE; i++, dmap++) { + struct ubsec_q *q; + + q = (struct ubsec_q *)malloc(sizeof(struct ubsec_q), + M_DEVBUF, M_NOWAIT); + if (q == NULL) { + printf(": can't allocate queue buffers\n"); + break; + } + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_dmachunk), + &dmap->d_alloc, 0)) { + printf(": can't allocate dma buffers\n"); + free(q, M_DEVBUF); + break; + } + dmap->d_dma = (struct ubsec_dmachunk *)dmap->d_alloc.dma_vaddr; + + q->q_dma = dmap; + sc->sc_queuea[i] = q; + + SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next); + } + + bzero(algs, sizeof(algs)); + algs[CRYPTO_3DES_CBC] = CRYPTO_ALG_FLAG_SUPPORTED; + algs[CRYPTO_DES_CBC] = CRYPTO_ALG_FLAG_SUPPORTED; + algs[CRYPTO_MD5_HMAC] = CRYPTO_ALG_FLAG_SUPPORTED; + algs[CRYPTO_SHA1_HMAC] = CRYPTO_ALG_FLAG_SUPPORTED; + crypto_register(sc->sc_cid, algs, ubsec_newsession, + ubsec_freesession, ubsec_process); + + /* + * Reset Broadcom chip + */ + ubsec_reset_board(sc); + + /* + * Init Broadcom specific PCI settings + */ + ubsec_init_pciregs(pa); + + /* + * Init Broadcom chip + */ + ubsec_init_board(sc); + + printf(": 3DES MD5 SHA1"); + +#ifndef UBSEC_NO_RNG + if (sc->sc_flags & UBS_FLAGS_RNG) { + sc->sc_statmask |= BS_STAT_MCR2_DONE; + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr), + &sc->sc_rng.rng_q.q_mcr, 0)) + goto skip_rng; + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_rngbypass), + &sc->sc_rng.rng_q.q_ctx, 0)) { + ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_mcr); + goto skip_rng; + } + + if (ubsec_dma_malloc(sc, sizeof(u_int32_t) * + UBSEC_RNG_BUFSIZ, &sc->sc_rng.rng_buf, 0)) { + ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_ctx); + ubsec_dma_free(sc, &sc->sc_rng.rng_q.q_mcr); + goto skip_rng; + } + + timeout_set(&sc->sc_rngto, ubsec_rng, sc); + if (hz >= 100) + sc->sc_rnghz = hz / 100; + else + sc->sc_rnghz = 1; + timeout_add(&sc->sc_rngto, sc->sc_rnghz); + printf(" RNG"); +skip_rng: + ; + } +#endif /* UBSEC_NO_RNG */ + + if (sc->sc_flags & UBS_FLAGS_KEY) { + sc->sc_statmask |= BS_STAT_MCR2_DONE; + + bzero(kalgs, sizeof(kalgs)); + kalgs[CRK_MOD_EXP] = CRYPTO_ALG_FLAG_SUPPORTED; +#if 0 + kalgs[CRK_MOD_EXP_CRT] = CRYPTO_ALG_FLAG_SUPPORTED; +#endif + + crypto_kregister(sc->sc_cid, kalgs, ubsec_kprocess); + printf(" PK"); + } + + printf(", %s\n", intrstr); +} + +/* + * UBSEC Interrupt routine + */ +int +ubsec_intr(void *arg) +{ + struct ubsec_softc *sc = arg; + volatile u_int32_t stat; + struct ubsec_q *q; + struct ubsec_dma *dmap; + int npkts = 0, i; + + stat = READ_REG(sc, BS_STAT); + + stat &= sc->sc_statmask; + if (stat == 0) + return (0); + + WRITE_REG(sc, BS_STAT, stat); /* IACK */ + + /* + * Check to see if we have any packets waiting for us + */ + if ((stat & BS_STAT_MCR1_DONE)) { + while (!SIMPLEQ_EMPTY(&sc->sc_qchip)) { + q = SIMPLEQ_FIRST(&sc->sc_qchip); + dmap = q->q_dma; + + if ((dmap->d_dma->d_mcr.mcr_flags & htole16(UBS_MCR_DONE)) == 0) + break; + + SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q_next); + + npkts = q->q_nstacked_mcrs; + /* + * search for further sc_qchip ubsec_q's that share + * the same MCR, and complete them too, they must be + * at the top. + */ + for (i = 0; i < npkts; i++) { + if(q->q_stacked_mcr[i]) + ubsec_callback(sc, q->q_stacked_mcr[i]); + else + break; + } + ubsec_callback(sc, q); + } + + /* + * Don't send any more packet to chip if there has been + * a DMAERR. + */ + if (!(stat & BS_STAT_DMAERR)) + ubsec_feed(sc); + } + + /* + * Check to see if we have any key setups/rng's waiting for us + */ + if ((sc->sc_flags & (UBS_FLAGS_KEY|UBS_FLAGS_RNG)) && + (stat & BS_STAT_MCR2_DONE)) { + struct ubsec_q2 *q2; + struct ubsec_mcr *mcr; + + while (!SIMPLEQ_EMPTY(&sc->sc_qchip2)) { + q2 = SIMPLEQ_FIRST(&sc->sc_qchip2); + + bus_dmamap_sync(sc->sc_dmat, q2->q_mcr.dma_map, + 0, q2->q_mcr.dma_map->dm_mapsize, + BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); + + mcr = (struct ubsec_mcr *)q2->q_mcr.dma_vaddr; + if ((mcr->mcr_flags & htole16(UBS_MCR_DONE)) == 0) { + bus_dmamap_sync(sc->sc_dmat, + q2->q_mcr.dma_map, 0, + q2->q_mcr.dma_map->dm_mapsize, + BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); + break; + } + SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip2, q_next); + ubsec_callback2(sc, q2); + /* + * Don't send any more packet to chip if there has been + * a DMAERR. + */ + if (!(stat & BS_STAT_DMAERR)) + ubsec_feed2(sc); + } + } + + /* + * Check to see if we got any DMA Error + */ + if (stat & BS_STAT_DMAERR) { +#ifdef UBSEC_DEBUG + volatile u_int32_t a = READ_REG(sc, BS_ERR); + + printf("%s: dmaerr %s@%08x\n", sc->sc_dv.dv_xname, + (a & BS_ERR_READ) ? "read" : "write", a & BS_ERR_ADDR); +#endif /* UBSEC_DEBUG */ + ubsecstats.hst_dmaerr++; + ubsec_totalreset(sc); + ubsec_feed(sc); + } + + return (1); +} + +/* + * ubsec_feed() - aggregate and post requests to chip + * It is assumed that the caller set splnet() + */ +void +ubsec_feed(struct ubsec_softc *sc) +{ +#ifdef UBSEC_DEBUG + static int max; +#endif /* UBSEC_DEBUG */ + struct ubsec_q *q, *q2; + int npkts, i; + void *v; + u_int32_t stat; + + npkts = sc->sc_nqueue; + if (npkts > UBS_MAX_AGGR) + npkts = UBS_MAX_AGGR; + if (npkts < 2) + goto feed1; + + if ((stat = READ_REG(sc, BS_STAT)) & (BS_STAT_MCR1_FULL | BS_STAT_DMAERR)) { + if(stat & BS_STAT_DMAERR) { + ubsec_totalreset(sc); + ubsecstats.hst_dmaerr++; + } + return; + } + +#ifdef UBSEC_DEBUG + printf("merging %d records\n", npkts); + + /* XXX temporary aggregation statistics reporting code */ + if (max < npkts) { + max = npkts; + printf("%s: new max aggregate %d\n", sc->sc_dv.dv_xname, max); + } +#endif /* UBSEC_DEBUG */ + + q = SIMPLEQ_FIRST(&sc->sc_queue); + SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next); + --sc->sc_nqueue; + + bus_dmamap_sync(sc->sc_dmat, q->q_src_map, + 0, q->q_src_map->dm_mapsize, BUS_DMASYNC_PREWRITE); + if (q->q_dst_map != NULL) + bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, + 0, q->q_dst_map->dm_mapsize, BUS_DMASYNC_PREREAD); + + q->q_nstacked_mcrs = npkts - 1; /* Number of packets stacked */ + + for (i = 0; i < q->q_nstacked_mcrs; i++) { + q2 = SIMPLEQ_FIRST(&sc->sc_queue); + bus_dmamap_sync(sc->sc_dmat, q2->q_src_map, + 0, q2->q_src_map->dm_mapsize, BUS_DMASYNC_PREWRITE); + if (q2->q_dst_map != NULL) + bus_dmamap_sync(sc->sc_dmat, q2->q_dst_map, + 0, q2->q_dst_map->dm_mapsize, BUS_DMASYNC_PREREAD); + SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next); + --sc->sc_nqueue; + + v = ((char *)&q2->q_dma->d_dma->d_mcr) + sizeof(struct ubsec_mcr) - + sizeof(struct ubsec_mcr_add); + bcopy(v, &q->q_dma->d_dma->d_mcradd[i], sizeof(struct ubsec_mcr_add)); + q->q_stacked_mcr[i] = q2; + } + q->q_dma->d_dma->d_mcr.mcr_pkts = htole16(npkts); + SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next); + bus_dmamap_sync(sc->sc_dmat, q->q_dma->d_alloc.dma_map, + 0, q->q_dma->d_alloc.dma_map->dm_mapsize, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr + + offsetof(struct ubsec_dmachunk, d_mcr)); + return; + +feed1: + while (!SIMPLEQ_EMPTY(&sc->sc_queue)) { + if ((stat = READ_REG(sc, BS_STAT)) & + (BS_STAT_MCR1_FULL | BS_STAT_DMAERR)) { + if(stat & BS_STAT_DMAERR) { + ubsec_totalreset(sc); + ubsecstats.hst_dmaerr++; + } + break; + } + + q = SIMPLEQ_FIRST(&sc->sc_queue); + + bus_dmamap_sync(sc->sc_dmat, q->q_src_map, + 0, q->q_src_map->dm_mapsize, BUS_DMASYNC_PREWRITE); + if (q->q_dst_map != NULL) + bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, + 0, q->q_dst_map->dm_mapsize, BUS_DMASYNC_PREREAD); + bus_dmamap_sync(sc->sc_dmat, q->q_dma->d_alloc.dma_map, + 0, q->q_dma->d_alloc.dma_map->dm_mapsize, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + + WRITE_REG(sc, BS_MCR1, q->q_dma->d_alloc.dma_paddr + + offsetof(struct ubsec_dmachunk, d_mcr)); +#ifdef UBSEC_DEBUG + printf("feed: q->chip %p %08x\n", q, + (u_int32_t)q->q_dma->d_alloc.dma_paddr); +#endif /* UBSEC_DEBUG */ + SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q_next); + --sc->sc_nqueue; + SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next); + } +} + +/* + * Allocate a new 'session' and return an encoded session id. 'sidp' + * contains our registration id, and should contain an encoded session + * id on successful allocation. + */ +int +ubsec_newsession(u_int32_t *sidp, struct cryptoini *cri) +{ + struct cryptoini *c, *encini = NULL, *macini = NULL; + struct ubsec_softc *sc = NULL; + struct ubsec_session *ses = NULL; + MD5_CTX md5ctx; + SHA1_CTX sha1ctx; + int i, sesn; + + if (sidp == NULL || cri == NULL) + return (EINVAL); + + for (i = 0; i < ubsec_cd.cd_ndevs; i++) { + sc = ubsec_cd.cd_devs[i]; + if (sc == NULL || sc->sc_cid == (*sidp)) + break; + } + if (sc == NULL) + return (EINVAL); + + for (c = cri; c != NULL; c = c->cri_next) { + if (c->cri_alg == CRYPTO_MD5_HMAC || + c->cri_alg == CRYPTO_SHA1_HMAC) { + if (macini) + return (EINVAL); + macini = c; + } else if (c->cri_alg == CRYPTO_DES_CBC || + c->cri_alg == CRYPTO_3DES_CBC) { + if (encini) + return (EINVAL); + encini = c; + } else + return (EINVAL); + } + if (encini == NULL && macini == NULL) + return (EINVAL); + + if (sc->sc_sessions == NULL) { + ses = sc->sc_sessions = (struct ubsec_session *)malloc( + sizeof(struct ubsec_session), M_DEVBUF, M_NOWAIT); + if (ses == NULL) + return (ENOMEM); + sesn = 0; + sc->sc_nsessions = 1; + } else { + for (sesn = 0; sesn < sc->sc_nsessions; sesn++) { + if (sc->sc_sessions[sesn].ses_used == 0) { + ses = &sc->sc_sessions[sesn]; + break; + } + } + + if (ses == NULL) { + sesn = sc->sc_nsessions; + ses = (struct ubsec_session *)malloc((sesn + 1) * + sizeof(struct ubsec_session), M_DEVBUF, M_NOWAIT); + if (ses == NULL) + return (ENOMEM); + bcopy(sc->sc_sessions, ses, sesn * + sizeof(struct ubsec_session)); + bzero(sc->sc_sessions, sesn * + sizeof(struct ubsec_session)); + free(sc->sc_sessions, M_DEVBUF); + sc->sc_sessions = ses; + ses = &sc->sc_sessions[sesn]; + sc->sc_nsessions++; + } + } + + bzero(ses, sizeof(struct ubsec_session)); + ses->ses_used = 1; + if (encini) { + /* get an IV, network byte order */ + arc4random_bytes(ses->ses_iv, sizeof(ses->ses_iv)); + + /* Go ahead and compute key in ubsec's byte order */ + if (encini->cri_alg == CRYPTO_DES_CBC) { + bcopy(encini->cri_key, &ses->ses_deskey[0], 8); + bcopy(encini->cri_key, &ses->ses_deskey[2], 8); + bcopy(encini->cri_key, &ses->ses_deskey[4], 8); + } else + bcopy(encini->cri_key, ses->ses_deskey, 24); + + SWAP32(ses->ses_deskey[0]); + SWAP32(ses->ses_deskey[1]); + SWAP32(ses->ses_deskey[2]); + SWAP32(ses->ses_deskey[3]); + SWAP32(ses->ses_deskey[4]); + SWAP32(ses->ses_deskey[5]); + } + + if (macini) { + for (i = 0; i < macini->cri_klen / 8; i++) + macini->cri_key[i] ^= HMAC_IPAD_VAL; + + if (macini->cri_alg == CRYPTO_MD5_HMAC) { + MD5Init(&md5ctx); + MD5Update(&md5ctx, macini->cri_key, + macini->cri_klen / 8); + MD5Update(&md5ctx, hmac_ipad_buffer, + HMAC_BLOCK_LEN - (macini->cri_klen / 8)); + bcopy(md5ctx.state, ses->ses_hminner, + sizeof(md5ctx.state)); + } else { + SHA1Init(&sha1ctx); + SHA1Update(&sha1ctx, macini->cri_key, + macini->cri_klen / 8); + SHA1Update(&sha1ctx, hmac_ipad_buffer, + HMAC_BLOCK_LEN - (macini->cri_klen / 8)); + bcopy(sha1ctx.state, ses->ses_hminner, + sizeof(sha1ctx.state)); + } + + for (i = 0; i < macini->cri_klen / 8; i++) + macini->cri_key[i] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL); + + if (macini->cri_alg == CRYPTO_MD5_HMAC) { + MD5Init(&md5ctx); + MD5Update(&md5ctx, macini->cri_key, + macini->cri_klen / 8); + MD5Update(&md5ctx, hmac_opad_buffer, + HMAC_BLOCK_LEN - (macini->cri_klen / 8)); + bcopy(md5ctx.state, ses->ses_hmouter, + sizeof(md5ctx.state)); + } else { + SHA1Init(&sha1ctx); + SHA1Update(&sha1ctx, macini->cri_key, + macini->cri_klen / 8); + SHA1Update(&sha1ctx, hmac_opad_buffer, + HMAC_BLOCK_LEN - (macini->cri_klen / 8)); + bcopy(sha1ctx.state, ses->ses_hmouter, + sizeof(sha1ctx.state)); + } + + for (i = 0; i < macini->cri_klen / 8; i++) + macini->cri_key[i] ^= HMAC_OPAD_VAL; + } + + *sidp = UBSEC_SID(sc->sc_dv.dv_unit, sesn); + return (0); +} + +/* + * Deallocate a session. + */ +int +ubsec_freesession(u_int64_t tid) +{ + struct ubsec_softc *sc; + int card, session; + u_int32_t sid = ((u_int32_t)tid) & 0xffffffff; + + card = UBSEC_CARD(sid); + if (card >= ubsec_cd.cd_ndevs || ubsec_cd.cd_devs[card] == NULL) + return (EINVAL); + sc = ubsec_cd.cd_devs[card]; + session = UBSEC_SESSION(sid); + bzero(&sc->sc_sessions[session], sizeof(sc->sc_sessions[session])); + return (0); +} + +int +ubsec_process(struct cryptop *crp) +{ + struct ubsec_q *q = NULL; + int card, err = 0, i, j, s, nicealign; + struct ubsec_softc *sc; + struct cryptodesc *crd1, *crd2, *maccrd, *enccrd; + int encoffset = 0, macoffset = 0, cpskip, cpoffset; + int sskip, dskip, stheend, dtheend; + int16_t coffset; + struct ubsec_session *ses; + struct ubsec_pktctx ctx; + struct ubsec_dma *dmap = NULL; + + if (crp == NULL || crp->crp_callback == NULL) { + ubsecstats.hst_invalid++; + return (EINVAL); + } + card = UBSEC_CARD(crp->crp_sid); + if (card >= ubsec_cd.cd_ndevs || ubsec_cd.cd_devs[card] == NULL) { + ubsecstats.hst_invalid++; + return (EINVAL); + } + + sc = ubsec_cd.cd_devs[card]; + + s = splnet(); + + if (SIMPLEQ_EMPTY(&sc->sc_freequeue)) { + ubsecstats.hst_queuefull++; + splx(s); + err = ENOMEM; + goto errout2; + } + + q = SIMPLEQ_FIRST(&sc->sc_freequeue); + SIMPLEQ_REMOVE_HEAD(&sc->sc_freequeue, q_next); + splx(s); + + dmap = q->q_dma; /* Save dma pointer */ + bzero(q, sizeof(struct ubsec_q)); + bzero(&ctx, sizeof(ctx)); + + q->q_sesn = UBSEC_SESSION(crp->crp_sid); + q->q_dma = dmap; + ses = &sc->sc_sessions[q->q_sesn]; + + if (crp->crp_flags & CRYPTO_F_IMBUF) { + q->q_src_m = (struct mbuf *)crp->crp_buf; + q->q_dst_m = (struct mbuf *)crp->crp_buf; + } else if (crp->crp_flags & CRYPTO_F_IOV) { + q->q_src_io = (struct uio *)crp->crp_buf; + q->q_dst_io = (struct uio *)crp->crp_buf; + } else { + err = EINVAL; + goto errout; /* XXX we don't handle contiguous blocks! */ + } + + bzero(&dmap->d_dma->d_mcr, sizeof(struct ubsec_mcr)); + + dmap->d_dma->d_mcr.mcr_pkts = htole16(1); + dmap->d_dma->d_mcr.mcr_flags = 0; + q->q_crp = crp; + + crd1 = crp->crp_desc; + if (crd1 == NULL) { + err = EINVAL; + goto errout; + } + crd2 = crd1->crd_next; + + if (crd2 == NULL) { + if (crd1->crd_alg == CRYPTO_MD5_HMAC || + crd1->crd_alg == CRYPTO_SHA1_HMAC) { + maccrd = crd1; + enccrd = NULL; + } else if (crd1->crd_alg == CRYPTO_DES_CBC || + crd1->crd_alg == CRYPTO_3DES_CBC) { + maccrd = NULL; + enccrd = crd1; + } else { + err = EINVAL; + goto errout; + } + } else { + if ((crd1->crd_alg == CRYPTO_MD5_HMAC || + crd1->crd_alg == CRYPTO_SHA1_HMAC) && + (crd2->crd_alg == CRYPTO_DES_CBC || + crd2->crd_alg == CRYPTO_3DES_CBC) && + ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) { + maccrd = crd1; + enccrd = crd2; + } else if ((crd1->crd_alg == CRYPTO_DES_CBC || + crd1->crd_alg == CRYPTO_3DES_CBC) && + (crd2->crd_alg == CRYPTO_MD5_HMAC || + crd2->crd_alg == CRYPTO_SHA1_HMAC) && + (crd1->crd_flags & CRD_F_ENCRYPT)) { + enccrd = crd1; + maccrd = crd2; + } else { + /* + * We cannot order the ubsec as requested + */ + err = EINVAL; + goto errout; + } + } + + if (enccrd) { + encoffset = enccrd->crd_skip; + ctx.pc_flags |= htole16(UBS_PKTCTX_ENC_3DES); + + if (enccrd->crd_flags & CRD_F_ENCRYPT) { + q->q_flags |= UBSEC_QFLAGS_COPYOUTIV; + + if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) + bcopy(enccrd->crd_iv, ctx.pc_iv, 8); + else { + ctx.pc_iv[0] = ses->ses_iv[0]; + ctx.pc_iv[1] = ses->ses_iv[1]; + } + + if ((enccrd->crd_flags & CRD_F_IV_PRESENT) == 0) { + if (crp->crp_flags & CRYPTO_F_IMBUF) + m_copyback(q->q_src_m, + enccrd->crd_inject, + 8, ctx.pc_iv); + else if (crp->crp_flags & CRYPTO_F_IOV) + cuio_copyback(q->q_src_io, + enccrd->crd_inject, + 8, ctx.pc_iv); + } + } else { + ctx.pc_flags |= htole16(UBS_PKTCTX_INBOUND); + + if (enccrd->crd_flags & CRD_F_IV_EXPLICIT) + bcopy(enccrd->crd_iv, ctx.pc_iv, 8); + else if (crp->crp_flags & CRYPTO_F_IMBUF) + m_copydata(q->q_src_m, enccrd->crd_inject, + 8, (caddr_t)ctx.pc_iv); + else if (crp->crp_flags & CRYPTO_F_IOV) + cuio_copydata(q->q_src_io, + enccrd->crd_inject, 8, + (caddr_t)ctx.pc_iv); + } + + ctx.pc_deskey[0] = ses->ses_deskey[0]; + ctx.pc_deskey[1] = ses->ses_deskey[1]; + ctx.pc_deskey[2] = ses->ses_deskey[2]; + ctx.pc_deskey[3] = ses->ses_deskey[3]; + ctx.pc_deskey[4] = ses->ses_deskey[4]; + ctx.pc_deskey[5] = ses->ses_deskey[5]; + SWAP32(ctx.pc_iv[0]); + SWAP32(ctx.pc_iv[1]); + } + + if (maccrd) { + macoffset = maccrd->crd_skip; + + if (maccrd->crd_alg == CRYPTO_MD5_HMAC) + ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_MD5); + else + ctx.pc_flags |= htole16(UBS_PKTCTX_AUTH_SHA1); + + for (i = 0; i < 5; i++) { + ctx.pc_hminner[i] = ses->ses_hminner[i]; + ctx.pc_hmouter[i] = ses->ses_hmouter[i]; + + HTOLE32(ctx.pc_hminner[i]); + HTOLE32(ctx.pc_hmouter[i]); + } + } + + if (enccrd && maccrd) { + /* + * ubsec cannot handle packets where the end of encryption + * and authentication are not the same, or where the + * encrypted part begins before the authenticated part. + */ + if (((encoffset + enccrd->crd_len) != + (macoffset + maccrd->crd_len)) || + (enccrd->crd_skip < maccrd->crd_skip)) { + err = EINVAL; + goto errout; + } + sskip = maccrd->crd_skip; + cpskip = dskip = enccrd->crd_skip; + stheend = maccrd->crd_len; + dtheend = enccrd->crd_len; + coffset = enccrd->crd_skip - maccrd->crd_skip; + cpoffset = cpskip + dtheend; +#ifdef UBSEC_DEBUG + printf("mac: skip %d, len %d, inject %d\n", + maccrd->crd_skip, maccrd->crd_len, maccrd->crd_inject); + printf("enc: skip %d, len %d, inject %d\n", + enccrd->crd_skip, enccrd->crd_len, enccrd->crd_inject); + printf("src: skip %d, len %d\n", sskip, stheend); + printf("dst: skip %d, len %d\n", dskip, dtheend); + printf("ubs: coffset %d, pktlen %d, cpskip %d, cpoffset %d\n", + coffset, stheend, cpskip, cpoffset); +#endif + } else { + cpskip = dskip = sskip = macoffset + encoffset; + dtheend = stheend = (enccrd)?enccrd->crd_len:maccrd->crd_len; + cpoffset = cpskip + dtheend; + coffset = 0; + } + ctx.pc_offset = htole16(coffset >> 2); + + if (bus_dmamap_create(sc->sc_dmat, 0xfff0, UBS_MAX_SCATTER, + 0xfff0, 0, BUS_DMA_NOWAIT, &q->q_src_map) != 0) { + err = ENOMEM; + goto errout; + } + if (crp->crp_flags & CRYPTO_F_IMBUF) { + if (bus_dmamap_load_mbuf(sc->sc_dmat, q->q_src_map, + q->q_src_m, BUS_DMA_NOWAIT) != 0) { + bus_dmamap_destroy(sc->sc_dmat, q->q_src_map); + q->q_src_map = NULL; + err = ENOMEM; + goto errout; + } + } else if (crp->crp_flags & CRYPTO_F_IOV) { + if (bus_dmamap_load_uio(sc->sc_dmat, q->q_src_map, + q->q_src_io, BUS_DMA_NOWAIT) != 0) { + bus_dmamap_destroy(sc->sc_dmat, q->q_src_map); + q->q_src_map = NULL; + err = ENOMEM; + goto errout; + } + } + nicealign = ubsec_dmamap_aligned(q->q_src_map); + + dmap->d_dma->d_mcr.mcr_pktlen = htole16(stheend); + +#ifdef UBSEC_DEBUG + printf("src skip: %d\n", sskip); +#endif + for (i = j = 0; i < q->q_src_map->dm_nsegs; i++) { + struct ubsec_pktbuf *pb; + bus_size_t packl = q->q_src_map->dm_segs[i].ds_len; + bus_addr_t packp = q->q_src_map->dm_segs[i].ds_addr; + + if (sskip >= packl) { + sskip -= packl; + continue; + } + + packl -= sskip; + packp += sskip; + sskip = 0; + + if (packl > 0xfffc) { + err = EIO; + goto errout; + } + + if (j == 0) + pb = &dmap->d_dma->d_mcr.mcr_ipktbuf; + else + pb = &dmap->d_dma->d_sbuf[j - 1]; + + pb->pb_addr = htole32(packp); + + if (stheend) { + if (packl > stheend) { + pb->pb_len = htole32(stheend); + stheend = 0; + } else { + pb->pb_len = htole32(packl); + stheend -= packl; + } + } else + pb->pb_len = htole32(packl); + + if ((i + 1) == q->q_src_map->dm_nsegs) + pb->pb_next = 0; + else + pb->pb_next = htole32(dmap->d_alloc.dma_paddr + + offsetof(struct ubsec_dmachunk, d_sbuf[j])); + j++; + } + + if (enccrd == NULL && maccrd != NULL) { + dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr = 0; + dmap->d_dma->d_mcr.mcr_opktbuf.pb_len = 0; + dmap->d_dma->d_mcr.mcr_opktbuf.pb_next = + htole32(dmap->d_alloc.dma_paddr + + offsetof(struct ubsec_dmachunk, d_macbuf[0])); +#ifdef UBSEC_DEBUG + printf("opkt: %x %x %x\n", + dmap->d_dma->d_mcr.mcr_opktbuf.pb_addr, + dmap->d_dma->d_mcr.mcr_opktbuf.pb_len, + dmap->d_dma->d_mcr.mcr_opktbuf.pb_next); +#endif + } else { + if (crp->crp_flags & CRYPTO_F_IOV) { + if (!nicealign) { + err = EINVAL; + goto errout; + } + if (bus_dmamap_create(sc->sc_dmat, 0xfff0, + UBS_MAX_SCATTER, 0xfff0, 0, BUS_DMA_NOWAIT, + &q->q_dst_map) != 0) { + err = ENOMEM; + goto errout; + } + if (bus_dmamap_load_uio(sc->sc_dmat, q->q_dst_map, + q->q_dst_io, BUS_DMA_NOWAIT) != 0) { + bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map); + q->q_dst_map = NULL; + goto errout; + } + } else if (crp->crp_flags & CRYPTO_F_IMBUF) { + if (nicealign) { + q->q_dst_m = q->q_src_m; + q->q_dst_map = q->q_src_map; + } else { + int totlen, len; + struct mbuf *m, *top, **mp; + + totlen = q->q_src_map->dm_mapsize; + if (q->q_src_m->m_flags & M_PKTHDR) { + len = MHLEN; + MGETHDR(m, M_DONTWAIT, MT_DATA); + } else { + len = MLEN; + MGET(m, M_DONTWAIT, MT_DATA); + } + if (m == NULL) { + err = ENOMEM; + goto errout; + } + if (len == MHLEN) + M_DUP_PKTHDR(m, q->q_src_m); + if (totlen >= MINCLSIZE) { + MCLGET(m, M_DONTWAIT); + if (m->m_flags & M_EXT) + len = MCLBYTES; + } + m->m_len = len; + top = NULL; + mp = ⊤ + + while (totlen > 0) { + if (top) { + MGET(m, M_DONTWAIT, MT_DATA); + if (m == NULL) { + m_freem(top); + err = ENOMEM; + goto errout; + } + len = MLEN; + } + if (top && totlen >= MINCLSIZE) { + MCLGET(m, M_DONTWAIT); + if (m->m_flags & M_EXT) + len = MCLBYTES; + } + m->m_len = len = min(totlen, len); + totlen -= len; + *mp = m; + mp = &m->m_next; + } + q->q_dst_m = top; + ubsec_mcopy(q->q_src_m, q->q_dst_m, + cpskip, cpoffset); + if (bus_dmamap_create(sc->sc_dmat, 0xfff0, + UBS_MAX_SCATTER, 0xfff0, 0, BUS_DMA_NOWAIT, + &q->q_dst_map) != 0) { + err = ENOMEM; + goto errout; + } + if (bus_dmamap_load_mbuf(sc->sc_dmat, + q->q_dst_map, q->q_dst_m, + BUS_DMA_NOWAIT) != 0) { + bus_dmamap_destroy(sc->sc_dmat, + q->q_dst_map); + q->q_dst_map = NULL; + err = ENOMEM; + goto errout; + } + } + } else { + err = EINVAL; + goto errout; + } + +#ifdef UBSEC_DEBUG + printf("dst skip: %d\n", dskip); +#endif + for (i = j = 0; i < q->q_dst_map->dm_nsegs; i++) { + struct ubsec_pktbuf *pb; + bus_size_t packl = q->q_dst_map->dm_segs[i].ds_len; + bus_addr_t packp = q->q_dst_map->dm_segs[i].ds_addr; + + if (dskip >= packl) { + dskip -= packl; + continue; + } + + packl -= dskip; + packp += dskip; + dskip = 0; + + if (packl > 0xfffc) { + err = EIO; + goto errout; + } + + if (j == 0) + pb = &dmap->d_dma->d_mcr.mcr_opktbuf; + else + pb = &dmap->d_dma->d_dbuf[j - 1]; + + pb->pb_addr = htole32(packp); + + if (dtheend) { + if (packl > dtheend) { + pb->pb_len = htole32(dtheend); + dtheend = 0; + } else { + pb->pb_len = htole32(packl); + dtheend -= packl; + } + } else + pb->pb_len = htole32(packl); + + if ((i + 1) == q->q_dst_map->dm_nsegs) { + if (maccrd) + pb->pb_next = htole32(dmap->d_alloc.dma_paddr + + offsetof(struct ubsec_dmachunk, d_macbuf[0])); + else + pb->pb_next = 0; + } else + pb->pb_next = htole32(dmap->d_alloc.dma_paddr + + offsetof(struct ubsec_dmachunk, d_dbuf[j])); + j++; + } + } + + dmap->d_dma->d_mcr.mcr_cmdctxp = htole32(dmap->d_alloc.dma_paddr + + offsetof(struct ubsec_dmachunk, d_ctx)); + + if (sc->sc_flags & UBS_FLAGS_LONGCTX) { + struct ubsec_pktctx_long *ctxl; + + ctxl = (struct ubsec_pktctx_long *)(dmap->d_alloc.dma_vaddr + + offsetof(struct ubsec_dmachunk, d_ctx)); + + /* transform small context into long context */ + ctxl->pc_len = htole16(sizeof(struct ubsec_pktctx_long)); + ctxl->pc_type = htole16(UBS_PKTCTX_TYPE_IPSEC); + ctxl->pc_flags = ctx.pc_flags; + ctxl->pc_offset = ctx.pc_offset; + for (i = 0; i < 6; i++) + ctxl->pc_deskey[i] = ctx.pc_deskey[i]; + for (i = 0; i < 5; i++) + ctxl->pc_hminner[i] = ctx.pc_hminner[i]; + for (i = 0; i < 5; i++) + ctxl->pc_hmouter[i] = ctx.pc_hmouter[i]; + ctxl->pc_iv[0] = ctx.pc_iv[0]; + ctxl->pc_iv[1] = ctx.pc_iv[1]; + } else + bcopy(&ctx, dmap->d_alloc.dma_vaddr + + offsetof(struct ubsec_dmachunk, d_ctx), + sizeof(struct ubsec_pktctx)); + + s = splnet(); + SIMPLEQ_INSERT_TAIL(&sc->sc_queue, q, q_next); + sc->sc_nqueue++; + ubsecstats.hst_ipackets++; + ubsecstats.hst_ibytes += dmap->d_alloc.dma_map->dm_mapsize; + ubsec_feed(sc); + splx(s); + return (0); + +errout: + if (q != NULL) { + if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m)) + m_freem(q->q_dst_m); + + if (q->q_dst_map != NULL && q->q_dst_map != q->q_src_map) { + bus_dmamap_unload(sc->sc_dmat, q->q_dst_map); + bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map); + } + if (q->q_src_map != NULL) { + bus_dmamap_unload(sc->sc_dmat, q->q_src_map); + bus_dmamap_destroy(sc->sc_dmat, q->q_src_map); + } + + s = splnet(); + SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next); + splx(s); + } + if (err == EINVAL) + ubsecstats.hst_invalid++; + else + ubsecstats.hst_nomem++; +errout2: + crp->crp_etype = err; + crypto_done(crp); + return (0); +} + +void +ubsec_callback(struct ubsec_softc *sc, struct ubsec_q *q) +{ + struct cryptop *crp = (struct cryptop *)q->q_crp; + struct cryptodesc *crd; + struct ubsec_dma *dmap = q->q_dma; + + ubsecstats.hst_opackets++; + ubsecstats.hst_obytes += dmap->d_alloc.dma_size; + + bus_dmamap_sync(sc->sc_dmat, dmap->d_alloc.dma_map, 0, + dmap->d_alloc.dma_map->dm_mapsize, + BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); + if (q->q_dst_map != NULL && q->q_dst_map != q->q_src_map) { + bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, + 0, q->q_dst_map->dm_mapsize, BUS_DMASYNC_POSTREAD); + bus_dmamap_unload(sc->sc_dmat, q->q_dst_map); + bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map); + } + bus_dmamap_sync(sc->sc_dmat, q->q_src_map, + 0, q->q_src_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); + bus_dmamap_unload(sc->sc_dmat, q->q_src_map); + bus_dmamap_destroy(sc->sc_dmat, q->q_src_map); + + if ((crp->crp_flags & CRYPTO_F_IMBUF) && (q->q_src_m != q->q_dst_m)) { + m_freem(q->q_src_m); + crp->crp_buf = (caddr_t)q->q_dst_m; + } + + /* copy out IV for future use */ + if (q->q_flags & UBSEC_QFLAGS_COPYOUTIV) { + for (crd = crp->crp_desc; crd; crd = crd->crd_next) { + if (crd->crd_alg != CRYPTO_DES_CBC && + crd->crd_alg != CRYPTO_3DES_CBC) + continue; + if (crp->crp_flags & CRYPTO_F_IMBUF) + m_copydata((struct mbuf *)crp->crp_buf, + crd->crd_skip + crd->crd_len - 8, 8, + (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv); + else if (crp->crp_flags & CRYPTO_F_IOV) { + cuio_copydata((struct uio *)crp->crp_buf, + crd->crd_skip + crd->crd_len - 8, 8, + (caddr_t)sc->sc_sessions[q->q_sesn].ses_iv); + } + break; + } + } + + for (crd = crp->crp_desc; crd; crd = crd->crd_next) { + if (crd->crd_alg != CRYPTO_MD5_HMAC && + crd->crd_alg != CRYPTO_SHA1_HMAC) + continue; + if (crp->crp_flags & CRYPTO_F_IMBUF) + m_copyback((struct mbuf *)crp->crp_buf, + crd->crd_inject, 12, + dmap->d_dma->d_macbuf); + else if (crp->crp_flags & CRYPTO_F_IOV && crp->crp_mac) + bcopy((caddr_t)dmap->d_dma->d_macbuf, + crp->crp_mac, 12); + break; + } + SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next); + crypto_done(crp); +} + +void +ubsec_mcopy(struct mbuf *srcm, struct mbuf *dstm, int hoffset, int toffset) +{ + int i, j, dlen, slen; + caddr_t dptr, sptr; + + j = 0; + sptr = srcm->m_data; + slen = srcm->m_len; + dptr = dstm->m_data; + dlen = dstm->m_len; + + while (1) { + for (i = 0; i < min(slen, dlen); i++) { + if (j < hoffset || j >= toffset) + *dptr++ = *sptr++; + slen--; + dlen--; + j++; + } + if (slen == 0) { + srcm = srcm->m_next; + if (srcm == NULL) + return; + sptr = srcm->m_data; + slen = srcm->m_len; + } + if (dlen == 0) { + dstm = dstm->m_next; + if (dstm == NULL) + return; + dptr = dstm->m_data; + dlen = dstm->m_len; + } + } +} + +/* + * feed the key generator, must be called at splnet() or higher. + */ +void +ubsec_feed2(struct ubsec_softc *sc) +{ + struct ubsec_q2 *q; + + while (!SIMPLEQ_EMPTY(&sc->sc_queue2)) { + if (READ_REG(sc, BS_STAT) & BS_STAT_MCR2_FULL) + break; + q = SIMPLEQ_FIRST(&sc->sc_queue2); + + bus_dmamap_sync(sc->sc_dmat, q->q_mcr.dma_map, 0, + q->q_mcr.dma_map->dm_mapsize, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + bus_dmamap_sync(sc->sc_dmat, q->q_ctx.dma_map, 0, + q->q_ctx.dma_map->dm_mapsize, + BUS_DMASYNC_PREWRITE); + + WRITE_REG(sc, BS_MCR2, q->q_mcr.dma_paddr); + SIMPLEQ_REMOVE_HEAD(&sc->sc_queue2, q_next); + --sc->sc_nqueue2; + SIMPLEQ_INSERT_TAIL(&sc->sc_qchip2, q, q_next); + } +} + +/* + * Callback for handling random numbers + */ +void +ubsec_callback2(struct ubsec_softc *sc, struct ubsec_q2 *q) +{ + struct cryptkop *krp; + struct ubsec_ctx_keyop *ctx; + + ctx = (struct ubsec_ctx_keyop *)q->q_ctx.dma_vaddr; + bus_dmamap_sync(sc->sc_dmat, q->q_ctx.dma_map, 0, + q->q_ctx.dma_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); + + switch (q->q_type) { +#ifndef UBSEC_NO_RNG + case UBS_CTXOP_RNGSHA1: + case UBS_CTXOP_RNGBYPASS: { + struct ubsec_q2_rng *rng = (struct ubsec_q2_rng *)q; + u_int32_t *p; + int i; + + bus_dmamap_sync(sc->sc_dmat, rng->rng_buf.dma_map, 0, + rng->rng_buf.dma_map->dm_mapsize, BUS_DMASYNC_POSTREAD); + p = (u_int32_t *)rng->rng_buf.dma_vaddr; + for (i = 0; i < UBSEC_RNG_BUFSIZ; p++, i++) + add_true_randomness(*p); + rng->rng_used = 0; + timeout_add(&sc->sc_rngto, sc->sc_rnghz); + break; + } +#endif + case UBS_CTXOP_MODEXP: { + struct ubsec_q2_modexp *me = (struct ubsec_q2_modexp *)q; + u_int rlen, clen; + + krp = me->me_krp; + rlen = (me->me_modbits + 7) / 8; + clen = (krp->krp_param[krp->krp_iparams].crp_nbits + 7) / 8; + + bus_dmamap_sync(sc->sc_dmat, me->me_M.dma_map, + 0, me->me_M.dma_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); + bus_dmamap_sync(sc->sc_dmat, me->me_E.dma_map, + 0, me->me_E.dma_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); + bus_dmamap_sync(sc->sc_dmat, me->me_C.dma_map, + 0, me->me_C.dma_map->dm_mapsize, BUS_DMASYNC_POSTREAD); + bus_dmamap_sync(sc->sc_dmat, me->me_epb.dma_map, + 0, me->me_epb.dma_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); + + if (clen < rlen) + krp->krp_status = E2BIG; + else { + if (sc->sc_flags & UBS_FLAGS_HWNORM) { + bzero(krp->krp_param[krp->krp_iparams].crp_p, + (krp->krp_param[krp->krp_iparams].crp_nbits + + 7) / 8); + bcopy(me->me_C.dma_vaddr, + krp->krp_param[krp->krp_iparams].crp_p, + (me->me_modbits + 7) / 8); + } else + ubsec_kshift_l(me->me_shiftbits, + me->me_C.dma_vaddr, me->me_normbits, + krp->krp_param[krp->krp_iparams].crp_p, + krp->krp_param[krp->krp_iparams].crp_nbits); + } + crypto_kdone(krp); + + /* bzero all potentially sensitive data */ + bzero(me->me_E.dma_vaddr, me->me_E.dma_size); + bzero(me->me_M.dma_vaddr, me->me_M.dma_size); + bzero(me->me_C.dma_vaddr, me->me_C.dma_size); + bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size); + + /* Can't free here, so put us on the free list. */ + SIMPLEQ_INSERT_TAIL(&sc->sc_q2free, &me->me_q, q_next); + break; + } + case UBS_CTXOP_RSAPRIV: { + struct ubsec_q2_rsapriv *rp = (struct ubsec_q2_rsapriv *)q; + u_int len; + + krp = rp->rpr_krp; + bus_dmamap_sync(sc->sc_dmat, rp->rpr_msgin.dma_map, 0, + rp->rpr_msgin.dma_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); + bus_dmamap_sync(sc->sc_dmat, rp->rpr_msgout.dma_map, 0, + rp->rpr_msgout.dma_map->dm_mapsize, BUS_DMASYNC_POSTREAD); + + len = (krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT].crp_nbits + 7) / 8; + bcopy(rp->rpr_msgout.dma_vaddr, + krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT].crp_p, len); + + crypto_kdone(krp); + + bzero(rp->rpr_msgin.dma_vaddr, rp->rpr_msgin.dma_size); + bzero(rp->rpr_msgout.dma_vaddr, rp->rpr_msgout.dma_size); + bzero(rp->rpr_q.q_ctx.dma_vaddr, rp->rpr_q.q_ctx.dma_size); + + /* Can't free here, so put us on the free list. */ + SIMPLEQ_INSERT_TAIL(&sc->sc_q2free, &rp->rpr_q, q_next); + break; + } + default: + printf("%s: unknown ctx op: %x\n", sc->sc_dv.dv_xname, + letoh16(ctx->ctx_op)); + break; + } +} + +#ifndef UBSEC_NO_RNG +void +ubsec_rng(void *vsc) +{ + struct ubsec_softc *sc = vsc; + struct ubsec_q2_rng *rng = &sc->sc_rng; + struct ubsec_mcr *mcr; + struct ubsec_ctx_rngbypass *ctx; + int s; + + s = splnet(); + if (rng->rng_used) { + splx(s); + return; + } + sc->sc_nqueue2++; + if (sc->sc_nqueue2 >= UBS_MAX_NQUEUE) + goto out; + + mcr = (struct ubsec_mcr *)rng->rng_q.q_mcr.dma_vaddr; + ctx = (struct ubsec_ctx_rngbypass *)rng->rng_q.q_ctx.dma_vaddr; + + mcr->mcr_pkts = htole16(1); + mcr->mcr_flags = 0; + mcr->mcr_cmdctxp = htole32(rng->rng_q.q_ctx.dma_paddr); + mcr->mcr_ipktbuf.pb_addr = mcr->mcr_ipktbuf.pb_next = 0; + mcr->mcr_ipktbuf.pb_len = 0; + mcr->mcr_reserved = mcr->mcr_pktlen = 0; + mcr->mcr_opktbuf.pb_addr = htole32(rng->rng_buf.dma_paddr); + mcr->mcr_opktbuf.pb_len = htole32(((sizeof(u_int32_t) * UBSEC_RNG_BUFSIZ)) & + UBS_PKTBUF_LEN); + mcr->mcr_opktbuf.pb_next = 0; + + ctx->rbp_len = htole16(sizeof(struct ubsec_ctx_rngbypass)); + ctx->rbp_op = htole16(UBS_CTXOP_RNGSHA1); + rng->rng_q.q_type = UBS_CTXOP_RNGSHA1; + + bus_dmamap_sync(sc->sc_dmat, rng->rng_buf.dma_map, 0, + rng->rng_buf.dma_map->dm_mapsize, BUS_DMASYNC_PREREAD); + + SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &rng->rng_q, q_next); + rng->rng_used = 1; + ubsec_feed2(sc); + splx(s); + + return; + +out: + /* + * Something weird happened, generate our own call back. + */ + sc->sc_nqueue2--; + splx(s); + timeout_add(&sc->sc_rngto, sc->sc_rnghz); +} +#endif /* UBSEC_NO_RNG */ + +int +ubsec_dma_malloc(struct ubsec_softc *sc, bus_size_t size, + struct ubsec_dma_alloc *dma, int mapflags) +{ + int r; + + if ((r = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, + &dma->dma_seg, 1, &dma->dma_nseg, BUS_DMA_NOWAIT)) != 0) + goto fail_0; + + if ((r = bus_dmamem_map(sc->sc_dmat, &dma->dma_seg, dma->dma_nseg, + size, &dma->dma_vaddr, mapflags | BUS_DMA_NOWAIT)) != 0) + goto fail_1; + + if ((r = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0, + BUS_DMA_NOWAIT, &dma->dma_map)) != 0) + goto fail_2; + + if ((r = bus_dmamap_load(sc->sc_dmat, dma->dma_map, dma->dma_vaddr, + size, NULL, BUS_DMA_NOWAIT)) != 0) + goto fail_3; + + dma->dma_paddr = dma->dma_map->dm_segs[0].ds_addr; + dma->dma_size = size; + return (0); + +fail_3: + bus_dmamap_destroy(sc->sc_dmat, dma->dma_map); +fail_2: + bus_dmamem_unmap(sc->sc_dmat, dma->dma_vaddr, size); +fail_1: + bus_dmamem_free(sc->sc_dmat, &dma->dma_seg, dma->dma_nseg); +fail_0: + dma->dma_map = NULL; + return (r); +} + +void +ubsec_dma_free(struct ubsec_softc *sc, struct ubsec_dma_alloc *dma) +{ + bus_dmamap_unload(sc->sc_dmat, dma->dma_map); + bus_dmamem_unmap(sc->sc_dmat, dma->dma_vaddr, dma->dma_size); + bus_dmamem_free(sc->sc_dmat, &dma->dma_seg, dma->dma_nseg); + bus_dmamap_destroy(sc->sc_dmat, dma->dma_map); +} + +/* + * Resets the board. Values in the regesters are left as is + * from the reset (i.e. initial values are assigned elsewhere). + */ +void +ubsec_reset_board(struct ubsec_softc *sc) +{ + volatile u_int32_t ctrl; + + ctrl = READ_REG(sc, BS_CTRL); + ctrl |= BS_CTRL_RESET; + WRITE_REG(sc, BS_CTRL, ctrl); + + /* + * Wait aprox. 30 PCI clocks = 900 ns = 0.9 us + */ + DELAY(10); +} + +/* + * Init Broadcom registers + */ +void +ubsec_init_board(struct ubsec_softc *sc) +{ + u_int32_t ctrl; + + ctrl = READ_REG(sc, BS_CTRL); + ctrl &= ~(BS_CTRL_BE32 | BS_CTRL_BE64); + ctrl |= BS_CTRL_LITTLE_ENDIAN | BS_CTRL_MCR1INT; + + if (sc->sc_flags & UBS_FLAGS_KEY) + ctrl |= BS_CTRL_MCR2INT; + else + ctrl &= ~BS_CTRL_MCR2INT; + + if (sc->sc_flags & UBS_FLAGS_HWNORM) + ctrl &= ~BS_CTRL_SWNORM; + + WRITE_REG(sc, BS_CTRL, ctrl); +} + +/* + * Init Broadcom PCI registers + */ +void +ubsec_init_pciregs(struct pci_attach_args *pa) +{ + pci_chipset_tag_t pc = pa->pa_pc; + u_int32_t misc; + + /* + * This will set the cache line size to 1, this will + * force the BCM58xx chip just to do burst read/writes. + * Cache line read/writes are to slow + */ + misc = pci_conf_read(pc, pa->pa_tag, PCI_BHLC_REG); + misc = (misc & ~(PCI_CACHELINE_MASK << PCI_CACHELINE_SHIFT)) + | ((UBS_DEF_CACHELINE & 0xff) << PCI_CACHELINE_SHIFT); + pci_conf_write(pc, pa->pa_tag, PCI_BHLC_REG, misc); +} + +/* + * Clean up after a chip crash. + * It is assumed that the caller is in splnet() + */ +void +ubsec_cleanchip(struct ubsec_softc *sc) +{ + struct ubsec_q *q; + + while (!SIMPLEQ_EMPTY(&sc->sc_qchip)) { + q = SIMPLEQ_FIRST(&sc->sc_qchip); + SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip, q_next); + ubsec_free_q(sc, q); + } +} + +/* + * free a ubsec_q + * It is assumed that the caller is within splnet() + */ +int +ubsec_free_q(struct ubsec_softc *sc, struct ubsec_q *q) +{ + struct ubsec_q *q2; + struct cryptop *crp; + int npkts; + int i; + + npkts = q->q_nstacked_mcrs; + + for (i = 0; i < npkts; i++) { + if(q->q_stacked_mcr[i]) { + q2 = q->q_stacked_mcr[i]; + + if ((q2->q_dst_m != NULL) && (q2->q_src_m != q2->q_dst_m)) + m_freem(q2->q_dst_m); + + crp = (struct cryptop *)q2->q_crp; + + SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q2, q_next); + + crp->crp_etype = EFAULT; + crypto_done(crp); + } else { + break; + } + } + + /* + * Free header MCR + */ + if ((q->q_dst_m != NULL) && (q->q_src_m != q->q_dst_m)) + m_freem(q->q_dst_m); + + crp = (struct cryptop *)q->q_crp; + + SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next); + + crp->crp_etype = EFAULT; + crypto_done(crp); + return(0); +} + +/* + * Routine to reset the chip and clean up. + * It is assumed that the caller is in splnet() + */ +void +ubsec_totalreset(struct ubsec_softc *sc) +{ + ubsec_reset_board(sc); + ubsec_init_board(sc); + ubsec_cleanchip(sc); +} + +int +ubsec_dmamap_aligned(bus_dmamap_t map) +{ + int i; + + for (i = 0; i < map->dm_nsegs; i++) { + if (map->dm_segs[i].ds_addr & 3) + return (0); + if ((i != (map->dm_nsegs - 1)) && + (map->dm_segs[i].ds_len & 3)) + return (0); + } + return (1); +} + +struct ubsec_softc * +ubsec_kfind(struct cryptkop *krp) +{ + struct ubsec_softc *sc; + int i; + + for (i = 0; i < ubsec_cd.cd_ndevs; i++) { + sc = ubsec_cd.cd_devs[i]; + if (sc == NULL) + continue; + if (sc->sc_cid == krp->krp_hid) + return (sc); + } + return (NULL); +} + +void +ubsec_kfree(struct ubsec_softc *sc, struct ubsec_q2 *q) +{ + switch (q->q_type) { + case UBS_CTXOP_MODEXP: { + struct ubsec_q2_modexp *me = (struct ubsec_q2_modexp *)q; + + ubsec_dma_free(sc, &me->me_q.q_mcr); + ubsec_dma_free(sc, &me->me_q.q_ctx); + ubsec_dma_free(sc, &me->me_M); + ubsec_dma_free(sc, &me->me_E); + ubsec_dma_free(sc, &me->me_C); + ubsec_dma_free(sc, &me->me_epb); + free(me, M_DEVBUF); + break; + } + case UBS_CTXOP_RSAPRIV: { + struct ubsec_q2_rsapriv *rp = (struct ubsec_q2_rsapriv *)q; + + ubsec_dma_free(sc, &rp->rpr_q.q_mcr); + ubsec_dma_free(sc, &rp->rpr_q.q_ctx); + ubsec_dma_free(sc, &rp->rpr_msgin); + ubsec_dma_free(sc, &rp->rpr_msgout); + free(rp, M_DEVBUF); + break; + } + default: + printf("%s: invalid kfree 0x%x\n", sc->sc_dv.dv_xname, + q->q_type); + break; + } +} + +int +ubsec_kprocess(struct cryptkop *krp) +{ + struct ubsec_softc *sc; + int r; + + if (krp == NULL || krp->krp_callback == NULL) + return (EINVAL); + if ((sc = ubsec_kfind(krp)) == NULL) + return (EINVAL); + + while (!SIMPLEQ_EMPTY(&sc->sc_q2free)) { + struct ubsec_q2 *q; + + q = SIMPLEQ_FIRST(&sc->sc_q2free); + SIMPLEQ_REMOVE_HEAD(&sc->sc_q2free, q_next); + ubsec_kfree(sc, q); + } + + switch (krp->krp_op) { + case CRK_MOD_EXP: + if (sc->sc_flags & UBS_FLAGS_HWNORM) + r = ubsec_kprocess_modexp_hw(sc, krp); + else + r = ubsec_kprocess_modexp_sw(sc, krp); + break; + case CRK_MOD_EXP_CRT: + r = ubsec_kprocess_rsapriv(sc, krp); + break; + default: + printf("%s: kprocess: invalid op 0x%x\n", + sc->sc_dv.dv_xname, krp->krp_op); + krp->krp_status = EOPNOTSUPP; + crypto_kdone(krp); + r = 0; + } + return (r); +} + +/* + * Start computation of cr[C] = (cr[M] ^ cr[E]) mod cr[N] (sw normalization) + */ +int +ubsec_kprocess_modexp_sw(struct ubsec_softc *sc, struct cryptkop *krp) +{ + struct ubsec_q2_modexp *me; + struct ubsec_mcr *mcr; + struct ubsec_ctx_modexp *ctx; + struct ubsec_pktbuf *epb; + int err = 0, s; + u_int nbits, normbits, mbits, shiftbits, ebits; + + me = malloc(sizeof *me, M_DEVBUF, M_NOWAIT | M_ZERO); + if (me == NULL) { + err = ENOMEM; + goto errout; + } + me->me_krp = krp; + me->me_q.q_type = UBS_CTXOP_MODEXP; + + nbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_N]); + if (nbits <= 512) + normbits = 512; + else if (nbits <= 768) + normbits = 768; + else if (nbits <= 1024) + normbits = 1024; + else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 1536) + normbits = 1536; + else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 2048) + normbits = 2048; + else { + err = E2BIG; + goto errout; + } + + shiftbits = normbits - nbits; + + me->me_modbits = nbits; + me->me_shiftbits = shiftbits; + me->me_normbits = normbits; + + /* Sanity check: result bits must be >= true modulus bits. */ + if (krp->krp_param[krp->krp_iparams].crp_nbits < nbits) { + err = ERANGE; + goto errout; + } + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr), + &me->me_q.q_mcr, 0)) { + err = ENOMEM; + goto errout; + } + mcr = (struct ubsec_mcr *)me->me_q.q_mcr.dma_vaddr; + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_modexp), + &me->me_q.q_ctx, 0)) { + err = ENOMEM; + goto errout; + } + + mbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_M]); + if (mbits > nbits) { + err = E2BIG; + goto errout; + } + if (ubsec_dma_malloc(sc, normbits / 8, &me->me_M, 0)) { + err = ENOMEM; + goto errout; + } + ubsec_kshift_r(shiftbits, + krp->krp_param[UBS_MODEXP_PAR_M].crp_p, mbits, + me->me_M.dma_vaddr, normbits); + + if (ubsec_dma_malloc(sc, normbits / 8, &me->me_C, 0)) { + err = ENOMEM; + goto errout; + } + bzero(me->me_C.dma_vaddr, me->me_C.dma_size); + + ebits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_E]); + if (ebits > nbits) { + err = E2BIG; + goto errout; + } + if (ubsec_dma_malloc(sc, normbits / 8, &me->me_E, 0)) { + err = ENOMEM; + goto errout; + } + ubsec_kshift_r(shiftbits, + krp->krp_param[UBS_MODEXP_PAR_E].crp_p, ebits, + me->me_E.dma_vaddr, normbits); + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_pktbuf), + &me->me_epb, 0)) { + err = ENOMEM; + goto errout; + } + epb = (struct ubsec_pktbuf *)me->me_epb.dma_vaddr; + epb->pb_addr = htole32(me->me_E.dma_paddr); + epb->pb_next = 0; + epb->pb_len = htole32(normbits / 8); + +#ifdef UBSEC_DEBUG + printf("Epb "); + ubsec_dump_pb(epb); +#endif + + mcr->mcr_pkts = htole16(1); + mcr->mcr_flags = 0; + mcr->mcr_cmdctxp = htole32(me->me_q.q_ctx.dma_paddr); + mcr->mcr_reserved = 0; + mcr->mcr_pktlen = 0; + + mcr->mcr_ipktbuf.pb_addr = htole32(me->me_M.dma_paddr); + mcr->mcr_ipktbuf.pb_len = htole32(normbits / 8); + mcr->mcr_ipktbuf.pb_next = htole32(me->me_epb.dma_paddr); + + mcr->mcr_opktbuf.pb_addr = htole32(me->me_C.dma_paddr); + mcr->mcr_opktbuf.pb_next = 0; + mcr->mcr_opktbuf.pb_len = htole32(normbits / 8); + +#ifdef DIAGNOSTIC + /* Misaligned output buffer will hang the chip. */ + if ((letoh32(mcr->mcr_opktbuf.pb_addr) & 3) != 0) + panic("%s: modexp invalid addr 0x%x", + sc->sc_dv.dv_xname, letoh32(mcr->mcr_opktbuf.pb_addr)); + if ((letoh32(mcr->mcr_opktbuf.pb_len) & 3) != 0) + panic("%s: modexp invalid len 0x%x", + sc->sc_dv.dv_xname, letoh32(mcr->mcr_opktbuf.pb_len)); +#endif + + ctx = (struct ubsec_ctx_modexp *)me->me_q.q_ctx.dma_vaddr; + bzero(ctx, sizeof(*ctx)); + ubsec_kshift_r(shiftbits, + krp->krp_param[UBS_MODEXP_PAR_N].crp_p, nbits, + ctx->me_N, normbits); + ctx->me_len = htole16((normbits / 8) + (4 * sizeof(u_int16_t))); + ctx->me_op = htole16(UBS_CTXOP_MODEXP); + ctx->me_E_len = htole16(nbits); + ctx->me_N_len = htole16(nbits); + +#ifdef UBSEC_DEBUG + ubsec_dump_mcr(mcr); + ubsec_dump_ctx2((struct ubsec_ctx_keyop *)ctx); +#endif + + /* + * ubsec_feed2 will sync mcr and ctx, we just need to sync + * everything else. + */ + bus_dmamap_sync(sc->sc_dmat, me->me_M.dma_map, + 0, me->me_M.dma_map->dm_mapsize, BUS_DMASYNC_PREWRITE); + bus_dmamap_sync(sc->sc_dmat, me->me_E.dma_map, + 0, me->me_E.dma_map->dm_mapsize, BUS_DMASYNC_PREWRITE); + bus_dmamap_sync(sc->sc_dmat, me->me_C.dma_map, + 0, me->me_C.dma_map->dm_mapsize, BUS_DMASYNC_PREREAD); + bus_dmamap_sync(sc->sc_dmat, me->me_epb.dma_map, + 0, me->me_epb.dma_map->dm_mapsize, BUS_DMASYNC_PREWRITE); + + /* Enqueue and we're done... */ + s = splnet(); + SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &me->me_q, q_next); + ubsec_feed2(sc); + splx(s); + + return (0); + +errout: + if (me != NULL) { + if (me->me_q.q_mcr.dma_map != NULL) + ubsec_dma_free(sc, &me->me_q.q_mcr); + if (me->me_q.q_ctx.dma_map != NULL) { + bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size); + ubsec_dma_free(sc, &me->me_q.q_ctx); + } + if (me->me_M.dma_map != NULL) { + bzero(me->me_M.dma_vaddr, me->me_M.dma_size); + ubsec_dma_free(sc, &me->me_M); + } + if (me->me_E.dma_map != NULL) { + bzero(me->me_E.dma_vaddr, me->me_E.dma_size); + ubsec_dma_free(sc, &me->me_E); + } + if (me->me_C.dma_map != NULL) { + bzero(me->me_C.dma_vaddr, me->me_C.dma_size); + ubsec_dma_free(sc, &me->me_C); + } + if (me->me_epb.dma_map != NULL) + ubsec_dma_free(sc, &me->me_epb); + free(me, M_DEVBUF); + } + krp->krp_status = err; + crypto_kdone(krp); + return (0); +} + +/* + * Start computation of cr[C] = (cr[M] ^ cr[E]) mod cr[N] (hw normalization) + */ +int +ubsec_kprocess_modexp_hw(struct ubsec_softc *sc, struct cryptkop *krp) +{ + struct ubsec_q2_modexp *me; + struct ubsec_mcr *mcr; + struct ubsec_ctx_modexp *ctx; + struct ubsec_pktbuf *epb; + int err = 0, s; + u_int nbits, normbits, mbits, shiftbits, ebits; + + me = malloc(sizeof *me, M_DEVBUF, M_NOWAIT | M_ZERO); + if (me == NULL) { + err = ENOMEM; + goto errout; + } + me->me_krp = krp; + me->me_q.q_type = UBS_CTXOP_MODEXP; + + nbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_N]); + if (nbits <= 512) + normbits = 512; + else if (nbits <= 768) + normbits = 768; + else if (nbits <= 1024) + normbits = 1024; + else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 1536) + normbits = 1536; + else if (sc->sc_flags & UBS_FLAGS_BIGKEY && nbits <= 2048) + normbits = 2048; + else { + err = E2BIG; + goto errout; + } + + shiftbits = normbits - nbits; + + /* XXX ??? */ + me->me_modbits = nbits; + me->me_shiftbits = shiftbits; + me->me_normbits = normbits; + + /* Sanity check: result bits must be >= true modulus bits. */ + if (krp->krp_param[krp->krp_iparams].crp_nbits < nbits) { + err = ERANGE; + goto errout; + } + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr), + &me->me_q.q_mcr, 0)) { + err = ENOMEM; + goto errout; + } + mcr = (struct ubsec_mcr *)me->me_q.q_mcr.dma_vaddr; + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_modexp), + &me->me_q.q_ctx, 0)) { + err = ENOMEM; + goto errout; + } + + mbits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_M]); + if (mbits > nbits) { + err = E2BIG; + goto errout; + } + if (ubsec_dma_malloc(sc, normbits / 8, &me->me_M, 0)) { + err = ENOMEM; + goto errout; + } + bzero(me->me_M.dma_vaddr, normbits / 8); + bcopy(krp->krp_param[UBS_MODEXP_PAR_M].crp_p, + me->me_M.dma_vaddr, (mbits + 7) / 8); + + if (ubsec_dma_malloc(sc, normbits / 8, &me->me_C, 0)) { + err = ENOMEM; + goto errout; + } + bzero(me->me_C.dma_vaddr, me->me_C.dma_size); + + ebits = ubsec_ksigbits(&krp->krp_param[UBS_MODEXP_PAR_E]); + if (ebits > nbits) { + err = E2BIG; + goto errout; + } + if (ubsec_dma_malloc(sc, normbits / 8, &me->me_E, 0)) { + err = ENOMEM; + goto errout; + } + bzero(me->me_E.dma_vaddr, normbits / 8); + bcopy(krp->krp_param[UBS_MODEXP_PAR_E].crp_p, + me->me_E.dma_vaddr, (ebits + 7) / 8); + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_pktbuf), + &me->me_epb, 0)) { + err = ENOMEM; + goto errout; + } + epb = (struct ubsec_pktbuf *)me->me_epb.dma_vaddr; + epb->pb_addr = htole32(me->me_E.dma_paddr); + epb->pb_next = 0; + epb->pb_len = htole32((ebits + 7) / 8); + +#ifdef UBSEC_DEBUG + printf("Epb "); + ubsec_dump_pb(epb); +#endif + + mcr->mcr_pkts = htole16(1); + mcr->mcr_flags = 0; + mcr->mcr_cmdctxp = htole32(me->me_q.q_ctx.dma_paddr); + mcr->mcr_reserved = 0; + mcr->mcr_pktlen = 0; + + mcr->mcr_ipktbuf.pb_addr = htole32(me->me_M.dma_paddr); + mcr->mcr_ipktbuf.pb_len = htole32(normbits / 8); + mcr->mcr_ipktbuf.pb_next = htole32(me->me_epb.dma_paddr); + + mcr->mcr_opktbuf.pb_addr = htole32(me->me_C.dma_paddr); + mcr->mcr_opktbuf.pb_next = 0; + mcr->mcr_opktbuf.pb_len = htole32(normbits / 8); + +#ifdef DIAGNOSTIC + /* Misaligned output buffer will hang the chip. */ + if ((letoh32(mcr->mcr_opktbuf.pb_addr) & 3) != 0) + panic("%s: modexp invalid addr 0x%x", + sc->sc_dv.dv_xname, letoh32(mcr->mcr_opktbuf.pb_addr)); + if ((letoh32(mcr->mcr_opktbuf.pb_len) & 3) != 0) + panic("%s: modexp invalid len 0x%x", + sc->sc_dv.dv_xname, letoh32(mcr->mcr_opktbuf.pb_len)); +#endif + + ctx = (struct ubsec_ctx_modexp *)me->me_q.q_ctx.dma_vaddr; + bzero(ctx, sizeof(*ctx)); + bcopy(krp->krp_param[UBS_MODEXP_PAR_N].crp_p, ctx->me_N, + (nbits + 7) / 8); + ctx->me_len = htole16((normbits / 8) + (4 * sizeof(u_int16_t))); + ctx->me_op = htole16(UBS_CTXOP_MODEXP); + ctx->me_E_len = htole16(ebits); + ctx->me_N_len = htole16(nbits); + +#ifdef UBSEC_DEBUG + ubsec_dump_mcr(mcr); + ubsec_dump_ctx2((struct ubsec_ctx_keyop *)ctx); +#endif + + /* + * ubsec_feed2 will sync mcr and ctx, we just need to sync + * everything else. + */ + bus_dmamap_sync(sc->sc_dmat, me->me_M.dma_map, + 0, me->me_M.dma_map->dm_mapsize, BUS_DMASYNC_PREWRITE); + bus_dmamap_sync(sc->sc_dmat, me->me_E.dma_map, + 0, me->me_E.dma_map->dm_mapsize, BUS_DMASYNC_PREWRITE); + bus_dmamap_sync(sc->sc_dmat, me->me_C.dma_map, + 0, me->me_C.dma_map->dm_mapsize, BUS_DMASYNC_PREREAD); + bus_dmamap_sync(sc->sc_dmat, me->me_epb.dma_map, + 0, me->me_epb.dma_map->dm_mapsize, BUS_DMASYNC_PREWRITE); + + /* Enqueue and we're done... */ + s = splnet(); + SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &me->me_q, q_next); + ubsec_feed2(sc); + splx(s); + + return (0); + +errout: + if (me != NULL) { + if (me->me_q.q_mcr.dma_map != NULL) + ubsec_dma_free(sc, &me->me_q.q_mcr); + if (me->me_q.q_ctx.dma_map != NULL) { + bzero(me->me_q.q_ctx.dma_vaddr, me->me_q.q_ctx.dma_size); + ubsec_dma_free(sc, &me->me_q.q_ctx); + } + if (me->me_M.dma_map != NULL) { + bzero(me->me_M.dma_vaddr, me->me_M.dma_size); + ubsec_dma_free(sc, &me->me_M); + } + if (me->me_E.dma_map != NULL) { + bzero(me->me_E.dma_vaddr, me->me_E.dma_size); + ubsec_dma_free(sc, &me->me_E); + } + if (me->me_C.dma_map != NULL) { + bzero(me->me_C.dma_vaddr, me->me_C.dma_size); + ubsec_dma_free(sc, &me->me_C); + } + if (me->me_epb.dma_map != NULL) + ubsec_dma_free(sc, &me->me_epb); + free(me, M_DEVBUF); + } + krp->krp_status = err; + crypto_kdone(krp); + return (0); +} + +int +ubsec_kprocess_rsapriv(struct ubsec_softc *sc, struct cryptkop *krp) +{ + struct ubsec_q2_rsapriv *rp = NULL; + struct ubsec_mcr *mcr; + struct ubsec_ctx_rsapriv *ctx; + int err = 0, s; + u_int padlen, msglen; + + msglen = ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_P]); + padlen = ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_Q]); + if (msglen > padlen) + padlen = msglen; + + if (padlen <= 256) + padlen = 256; + else if (padlen <= 384) + padlen = 384; + else if (padlen <= 512) + padlen = 512; + else if (sc->sc_flags & UBS_FLAGS_BIGKEY && padlen <= 768) + padlen = 768; + else if (sc->sc_flags & UBS_FLAGS_BIGKEY && padlen <= 1024) + padlen = 1024; + else { + err = E2BIG; + goto errout; + } + + if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_DP]) > padlen) { + err = E2BIG; + goto errout; + } + + if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_DQ]) > padlen) { + err = E2BIG; + goto errout; + } + + if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_PINV]) > padlen) { + err = E2BIG; + goto errout; + } + + rp = malloc(sizeof *rp, M_DEVBUF, M_NOWAIT | M_ZERO); + if (rp == NULL) + return (ENOMEM); + rp->rpr_krp = krp; + rp->rpr_q.q_type = UBS_CTXOP_RSAPRIV; + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_mcr), + &rp->rpr_q.q_mcr, 0)) { + err = ENOMEM; + goto errout; + } + mcr = (struct ubsec_mcr *)rp->rpr_q.q_mcr.dma_vaddr; + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_ctx_rsapriv), + &rp->rpr_q.q_ctx, 0)) { + err = ENOMEM; + goto errout; + } + ctx = (struct ubsec_ctx_rsapriv *)rp->rpr_q.q_ctx.dma_vaddr; + bzero(ctx, sizeof *ctx); + + /* Copy in p */ + bcopy(krp->krp_param[UBS_RSAPRIV_PAR_P].crp_p, + &ctx->rpr_buf[0 * (padlen / 8)], + (krp->krp_param[UBS_RSAPRIV_PAR_P].crp_nbits + 7) / 8); + + /* Copy in q */ + bcopy(krp->krp_param[UBS_RSAPRIV_PAR_Q].crp_p, + &ctx->rpr_buf[1 * (padlen / 8)], + (krp->krp_param[UBS_RSAPRIV_PAR_Q].crp_nbits + 7) / 8); + + /* Copy in dp */ + bcopy(krp->krp_param[UBS_RSAPRIV_PAR_DP].crp_p, + &ctx->rpr_buf[2 * (padlen / 8)], + (krp->krp_param[UBS_RSAPRIV_PAR_DP].crp_nbits + 7) / 8); + + /* Copy in dq */ + bcopy(krp->krp_param[UBS_RSAPRIV_PAR_DQ].crp_p, + &ctx->rpr_buf[3 * (padlen / 8)], + (krp->krp_param[UBS_RSAPRIV_PAR_DQ].crp_nbits + 7) / 8); + + /* Copy in pinv */ + bcopy(krp->krp_param[UBS_RSAPRIV_PAR_PINV].crp_p, + &ctx->rpr_buf[4 * (padlen / 8)], + (krp->krp_param[UBS_RSAPRIV_PAR_PINV].crp_nbits + 7) / 8); + + msglen = padlen * 2; + + /* Copy in input message (aligned buffer/length). */ + if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_MSGIN]) > msglen) { + /* Is this likely? */ + err = E2BIG; + goto errout; + } + if (ubsec_dma_malloc(sc, (msglen + 7) / 8, &rp->rpr_msgin, 0)) { + err = ENOMEM; + goto errout; + } + bzero(rp->rpr_msgin.dma_vaddr, (msglen + 7) / 8); + bcopy(krp->krp_param[UBS_RSAPRIV_PAR_MSGIN].crp_p, + rp->rpr_msgin.dma_vaddr, + (krp->krp_param[UBS_RSAPRIV_PAR_MSGIN].crp_nbits + 7) / 8); + + /* Prepare space for output message (aligned buffer/length). */ + if (ubsec_ksigbits(&krp->krp_param[UBS_RSAPRIV_PAR_MSGOUT]) < msglen) { + /* Is this likely? */ + err = E2BIG; + goto errout; + } + if (ubsec_dma_malloc(sc, (msglen + 7) / 8, &rp->rpr_msgout, 0)) { + err = ENOMEM; + goto errout; + } + bzero(rp->rpr_msgout.dma_vaddr, (msglen + 7) / 8); + + mcr->mcr_pkts = htole16(1); + mcr->mcr_flags = 0; + mcr->mcr_cmdctxp = htole32(rp->rpr_q.q_ctx.dma_paddr); + mcr->mcr_ipktbuf.pb_addr = htole32(rp->rpr_msgin.dma_paddr); + mcr->mcr_ipktbuf.pb_next = 0; + mcr->mcr_ipktbuf.pb_len = htole32(rp->rpr_msgin.dma_size); + mcr->mcr_reserved = 0; + mcr->mcr_pktlen = htole16(msglen); + mcr->mcr_opktbuf.pb_addr = htole32(rp->rpr_msgout.dma_paddr); + mcr->mcr_opktbuf.pb_next = 0; + mcr->mcr_opktbuf.pb_len = htole32(rp->rpr_msgout.dma_size); + +#ifdef DIAGNOSTIC + if (rp->rpr_msgin.dma_paddr & 3 || rp->rpr_msgin.dma_size & 3) { + panic("%s: rsapriv: invalid msgin %p(0x%x)", + sc->sc_dv.dv_xname, rp->rpr_msgin.dma_paddr, + rp->rpr_msgin.dma_size); + } + if (rp->rpr_msgout.dma_paddr & 3 || rp->rpr_msgout.dma_size & 3) { + panic("%s: rsapriv: invalid msgout %p(0x%x)", + sc->sc_dv.dv_xname, rp->rpr_msgout.dma_paddr, + rp->rpr_msgout.dma_size); + } +#endif + + ctx->rpr_len = (sizeof(u_int16_t) * 4) + (5 * (padlen / 8)); + ctx->rpr_op = htole16(UBS_CTXOP_RSAPRIV); + ctx->rpr_q_len = htole16(padlen); + ctx->rpr_p_len = htole16(padlen); + + /* + * ubsec_feed2 will sync mcr and ctx, we just need to sync + * everything else. + */ + bus_dmamap_sync(sc->sc_dmat, rp->rpr_msgin.dma_map, + 0, rp->rpr_msgin.dma_map->dm_mapsize, BUS_DMASYNC_PREWRITE); + bus_dmamap_sync(sc->sc_dmat, rp->rpr_msgout.dma_map, + 0, rp->rpr_msgout.dma_map->dm_mapsize, BUS_DMASYNC_PREREAD); + + /* Enqueue and we're done... */ + s = splnet(); + SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &rp->rpr_q, q_next); + ubsec_feed2(sc); + splx(s); + return (0); + +errout: + if (rp != NULL) { + if (rp->rpr_q.q_mcr.dma_map != NULL) + ubsec_dma_free(sc, &rp->rpr_q.q_mcr); + if (rp->rpr_msgin.dma_map != NULL) { + bzero(rp->rpr_msgin.dma_vaddr, rp->rpr_msgin.dma_size); + ubsec_dma_free(sc, &rp->rpr_msgin); + } + if (rp->rpr_msgout.dma_map != NULL) { + bzero(rp->rpr_msgout.dma_vaddr, rp->rpr_msgout.dma_size); + ubsec_dma_free(sc, &rp->rpr_msgout); + } + free(rp, M_DEVBUF); + } + krp->krp_status = err; + crypto_kdone(krp); + return (0); +} + +void +ubsec_dump_pb(struct ubsec_pktbuf *pb) +{ + printf("addr 0x%x (0x%x) next 0x%x\n", + pb->pb_addr, pb->pb_len, pb->pb_next); +} + +void +ubsec_dump_ctx2(struct ubsec_ctx_keyop *c) +{ + printf("CTX (0x%x):\n", c->ctx_len); + switch (letoh16(c->ctx_op)) { + case UBS_CTXOP_RNGBYPASS: + case UBS_CTXOP_RNGSHA1: + break; + case UBS_CTXOP_MODEXP: + { + struct ubsec_ctx_modexp *cx = (void *)c; + int i, len; + + printf(" Elen %u, Nlen %u\n", + letoh16(cx->me_E_len), letoh16(cx->me_N_len)); + len = (cx->me_N_len + 7)/8; + for (i = 0; i < len; i++) + printf("%s%02x", (i == 0) ? " N: " : ":", cx->me_N[i]); + printf("\n"); + break; + } + default: + printf("unknown context: %x\n", c->ctx_op); + } + printf("END CTX\n"); +} + +void +ubsec_dump_mcr(struct ubsec_mcr *mcr) +{ + struct ubsec_mcr_add *ma; + int i; + + printf("MCR:\n"); + printf(" pkts: %u, flags 0x%x\n", + letoh16(mcr->mcr_pkts), letoh16(mcr->mcr_flags)); + ma = (struct ubsec_mcr_add *)&mcr->mcr_cmdctxp; + for (i = 0; i < letoh16(mcr->mcr_pkts); i++) { + printf(" %d: ctx 0x%x len 0x%x rsvd 0x%x\n", i, + letoh32(ma->mcr_cmdctxp), letoh16(ma->mcr_pktlen), + letoh16(ma->mcr_reserved)); + printf(" %d: ipkt ", i); + ubsec_dump_pb(&ma->mcr_ipktbuf); + printf(" %d: opkt ", i); + ubsec_dump_pb(&ma->mcr_opktbuf); + ma++; + } + printf("END MCR\n"); +} + +/* + * Return the number of significant bits of a big number. + */ +int +ubsec_ksigbits(struct crparam *cr) +{ + u_int plen = (cr->crp_nbits + 7) / 8; + int i, sig = plen * 8; + u_int8_t c, *p = cr->crp_p; + + for (i = plen - 1; i >= 0; i--) { + c = p[i]; + if (c != 0) { + while ((c & 0x80) == 0) { + sig--; + c <<= 1; + } + break; + } + sig -= 8; + } + return (sig); +} + +void +ubsec_kshift_r(u_int shiftbits, u_int8_t *src, u_int srcbits, + u_int8_t *dst, u_int dstbits) +{ + u_int slen, dlen; + int i, si, di, n; + + slen = (srcbits + 7) / 8; + dlen = (dstbits + 7) / 8; + + for (i = 0; i < slen; i++) + dst[i] = src[i]; + for (i = 0; i < dlen - slen; i++) + dst[slen + i] = 0; + + n = shiftbits / 8; + if (n != 0) { + si = dlen - n - 1; + di = dlen - 1; + while (si >= 0) + dst[di--] = dst[si--]; + while (di >= 0) + dst[di--] = 0; + } + + n = shiftbits % 8; + if (n != 0) { + for (i = dlen - 1; i > 0; i--) + dst[i] = (dst[i] << n) | + (dst[i - 1] >> (8 - n)); + dst[0] = dst[0] << n; + } +} + +void +ubsec_kshift_l(u_int shiftbits, u_int8_t *src, u_int srcbits, + u_int8_t *dst, u_int dstbits) +{ + int slen, dlen, i, n; + + slen = (srcbits + 7) / 8; + dlen = (dstbits + 7) / 8; + + n = shiftbits / 8; + for (i = 0; i < slen; i++) + dst[i] = src[i + n]; + for (i = 0; i < dlen - slen; i++) + dst[slen + i] = 0; + + n = shiftbits % 8; + if (n != 0) { + for (i = 0; i < (dlen - 1); i++) + dst[i] = (dst[i] >> n) | (dst[i + 1] << (8 - n)); + dst[dlen - 1] = dst[dlen - 1] >> n; + } +} |