diff options
author | sam <sam@FreeBSD.org> | 2002-10-04 20:33:20 +0000 |
---|---|---|
committer | sam <sam@FreeBSD.org> | 2002-10-04 20:33:20 +0000 |
commit | 3a935a95e35fb001be1652c4f2285d87e89c72cc (patch) | |
tree | 20409010bb02b6f638402088602dd541474bf1b2 /sys/dev/ubsec/ubsec.c | |
parent | 7e497f5bab9627d82a1bb4427bc66bbf756d9f64 (diff) | |
download | FreeBSD-src-3a935a95e35fb001be1652c4f2285d87e89c72cc.zip FreeBSD-src-3a935a95e35fb001be1652c4f2285d87e89c72cc.tar.gz |
Crypto device driver for Broadcom-based cards. Known to work with 582x-based
cards. Supposed to work with several others.
Obtained from: openbsd
Diffstat (limited to 'sys/dev/ubsec/ubsec.c')
-rw-r--r-- | sys/dev/ubsec/ubsec.c | 2533 |
1 files changed, 2533 insertions, 0 deletions
diff --git a/sys/dev/ubsec/ubsec.c b/sys/dev/ubsec/ubsec.c new file mode 100644 index 0000000..9d13681 --- /dev/null +++ b/sys/dev/ubsec/ubsec.c @@ -0,0 +1,2533 @@ +/* $FreeBSD$ */ +/* $OpenBSD: ubsec.c,v 1.103 2002/06/17 08:05:47 deraadt 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) + * + * All rights reserved. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Jason L. Wright + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * 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. + * + */ + +#define 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/lock.h> +#include <sys/mutex.h> +#include <sys/sysctl.h> +#include <sys/endian.h> + +#include <vm/vm.h> +#include <vm/pmap.h> + +#include <machine/clock.h> +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/bus.h> +#include <sys/rman.h> + +#include <crypto/sha1.h> +#include <opencrypto/cryptodev.h> +#include <opencrypto/cryptosoft.h> +#include <sys/md5.h> +#include <sys/random.h> + +#include <pci/pcivar.h> +#include <pci/pcireg.h> + +/* grr, #defines for gratuitous incompatibility in queue.h */ +#define SIMPLEQ_HEAD STAILQ_HEAD +#define SIMPLEQ_ENTRY STAILQ_ENTRY +#define SIMPLEQ_INIT STAILQ_INIT +#define SIMPLEQ_INSERT_TAIL STAILQ_INSERT_TAIL +#define SIMPLEQ_EMPTY STAILQ_EMPTY +#define SIMPLEQ_FIRST STAILQ_FIRST +#define SIMPLEQ_REMOVE_HEAD STAILQ_REMOVE_HEAD_UNTIL +/* ditto for endian.h */ +#define letoh16(x) le16toh(x) +#define letoh32(x) le32toh(x) + +#include <dev/ubsec/ubsecreg.h> +#include <dev/ubsec/ubsecvar.h> + +/* + * Prototypes and count for the pci_device structure + */ +static int ubsec_probe(device_t); +static int ubsec_attach(device_t); +static int ubsec_detach(device_t); +static int ubsec_suspend(device_t); +static int ubsec_resume(device_t); +static void ubsec_shutdown(device_t); + +static device_method_t ubsec_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, ubsec_probe), + DEVMETHOD(device_attach, ubsec_attach), + DEVMETHOD(device_detach, ubsec_detach), + DEVMETHOD(device_suspend, ubsec_suspend), + DEVMETHOD(device_resume, ubsec_resume), + DEVMETHOD(device_shutdown, ubsec_shutdown), + + /* bus interface */ + DEVMETHOD(bus_print_child, bus_generic_print_child), + DEVMETHOD(bus_driver_added, bus_generic_driver_added), + + { 0, 0 } +}; +static driver_t ubsec_driver = { + "ubsec", + ubsec_methods, + sizeof (struct ubsec_softc) +}; +static devclass_t ubsec_devclass; + +DRIVER_MODULE(ubsec, pci, ubsec_driver, ubsec_devclass, 0, 0); + +static void ubsec_intr(void *); +static int ubsec_newsession(void *, u_int32_t *, struct cryptoini *); +static int ubsec_freesession(void *, u_int64_t); +static int ubsec_process(void *, struct cryptop *, int); +static void ubsec_callback(struct ubsec_softc *, struct ubsec_q *); +static int ubsec_feed(struct ubsec_softc *); +static void ubsec_mcopy(struct mbuf *, struct mbuf *, int, int); +static void ubsec_callback2(struct ubsec_softc *, struct ubsec_q2 *); +static int ubsec_feed2(struct ubsec_softc *); +static void ubsec_rng(void *); +static int ubsec_dma_malloc(struct ubsec_softc *, bus_size_t, + struct ubsec_dma_alloc *, int); +static void ubsec_dma_free(struct ubsec_softc *, struct ubsec_dma_alloc *); +static int ubsec_dmamap_aligned(struct ubsec_operand *op); + +static void ubsec_reset_board(struct ubsec_softc *sc); +static void ubsec_init_board(struct ubsec_softc *sc); +static void ubsec_init_pciregs(device_t dev); +static void ubsec_totalreset(struct ubsec_softc *sc); + +static int ubsec_free_q(struct ubsec_softc *sc, struct ubsec_q *q); + +static int ubsec_kprocess(void*, struct cryptkop *, int); +static int ubsec_kprocess_modexp(struct ubsec_softc *, struct cryptkop *, int); +static int ubsec_kprocess_rsapriv(struct ubsec_softc *, struct cryptkop *, int); +static void ubsec_kfree(struct ubsec_softc *, struct ubsec_q2 *); +static int ubsec_ksigbits(struct crparam *); +static void ubsec_kshift_r(u_int, u_int8_t *, u_int, u_int8_t *, u_int); +static void ubsec_kshift_l(u_int, u_int8_t *, u_int, u_int8_t *, u_int); + +#ifdef UBSEC_DEBUG +static void ubsec_dump_pb(volatile struct ubsec_pktbuf *); +static void ubsec_dump_mcr(struct ubsec_mcr *); +static void ubsec_dump_ctx2(struct ubsec_ctx_keyop *); + +static int ubsec_debug = 0; +SYSCTL_INT(_debug, OID_AUTO, ubsec, CTLFLAG_RW, &ubsec_debug, + 0, "UBSEC driver debugging printfs"); +#endif + +#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; +SYSCTL_STRUCT(_kern, OID_AUTO, ubsec_stats, CTLFLAG_RD, &ubsecstats, + ubsec_stats, "Broadcom driver statistics"); +static int ubsec_maxbatch = 2; /* XXX tune based on part+sys speed */ +SYSCTL_INT(_kern, OID_AUTO, ubsec_maxbatch, CTLFLAG_RW, &ubsec_maxbatch, + 0, "Broadcom driver: max ops to batch w/o interrupt"); + +int +ubsec_probe(device_t dev) +{ + if (pci_get_vendor(dev) == PCI_VENDOR_BLUESTEEL && + (pci_get_device(dev) == PCI_PRODUCT_BLUESTEEL_5501 || + pci_get_device(dev) == PCI_PRODUCT_BLUESTEEL_5601)) + return (0); + if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM && + (pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5805 || + pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5820 || + pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5821 || + pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5822)) + return (0); + return (ENXIO); +} + +static const char* +ubsec_partname(struct ubsec_softc *sc) +{ + /* XXX sprintf numbers when not decoded */ + switch (pci_get_vendor(sc->sc_dev)) { + case PCI_VENDOR_BROADCOM: + switch (pci_get_device(sc->sc_dev)) { + case PCI_PRODUCT_BROADCOM_5805: return "Broadcom 5805"; + case PCI_PRODUCT_BROADCOM_5820: return "Broadcom 5820"; + case PCI_PRODUCT_BROADCOM_5821: return "Broadcom 5821"; + case PCI_PRODUCT_BROADCOM_5822: return "Broadcom 5822"; + } + return "Broadcom unknown-part"; + case PCI_VENDOR_BLUESTEEL: + switch (pci_get_device(sc->sc_dev)) { + case PCI_PRODUCT_BLUESTEEL_5601: return "Bluesteel 5601"; + } + return "Bluesteel unknown-part"; + } + return "Unknown-vendor unknown-part"; +} + +static int +ubsec_attach(device_t dev) +{ + struct ubsec_softc *sc = device_get_softc(dev); + struct ubsec_dma *dmap; + u_int32_t cmd, i; + int rid; + + KASSERT(sc != NULL, ("ubsec_attach: null software carrier!")); + bzero(sc, sizeof (*sc)); + sc->sc_dev = dev; + + mtx_init(&sc->sc_mtx, device_get_nameunit(dev), "crypto driver", MTX_DEF); + + 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); + + /* XXX handle power management */ + + sc->sc_statmask = BS_STAT_MCR1_DONE | BS_STAT_DMAERR; + + if (pci_get_vendor(dev) == PCI_VENDOR_BLUESTEEL && + pci_get_device(dev) == PCI_PRODUCT_BLUESTEEL_5601) + sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG; + + if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM && + pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5805) + sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG; + + if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM && + pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5820) + sc->sc_flags |= UBS_FLAGS_KEY | UBS_FLAGS_RNG | + UBS_FLAGS_LONGCTX | UBS_FLAGS_HWNORM | UBS_FLAGS_BIGKEY; + + if (pci_get_vendor(dev) == PCI_VENDOR_BROADCOM && + (pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5821 || + pci_get_device(dev) == PCI_PRODUCT_BROADCOM_5822)) { + /* NB: the 5821/5822 defines some additional status bits */ + 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; + } + /* XXX no PK key support until we sort out the bus_dma stuff */ + sc->sc_flags &= ~UBS_FLAGS_KEY; + + cmd = pci_read_config(dev, PCIR_COMMAND, 4); + cmd |= PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN; + pci_write_config(dev, PCIR_COMMAND, cmd, 4); + cmd = pci_read_config(dev, PCIR_COMMAND, 4); + + if (!(cmd & PCIM_CMD_MEMEN)) { + device_printf(dev, "failed to enable memory mapping\n"); + goto bad; + } + + if (!(cmd & PCIM_CMD_BUSMASTEREN)) { + device_printf(dev, "failed to enable bus mastering\n"); + goto bad; + } + + /* + * Setup memory-mapping of PCI registers. + */ + rid = BS_BAR; + sc->sc_sr = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, + 0, ~0, 1, RF_ACTIVE); + if (sc->sc_sr == NULL) { + device_printf(dev, "cannot map register space\n"); + goto bad; + } + sc->sc_st = rman_get_bustag(sc->sc_sr); + sc->sc_sh = rman_get_bushandle(sc->sc_sr); + + /* + * Arrange interrupt line. + */ + rid = 0; + sc->sc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, + 0, ~0, 1, RF_SHAREABLE|RF_ACTIVE); + if (sc->sc_irq == NULL) { + device_printf(dev, "could not map interrupt\n"); + goto bad; + } + /* + * NB: Network code assumes we are blocked with splimp() + * so make sure the IRQ is mapped appropriately. + */ + if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_NET, + ubsec_intr, sc, &sc->sc_ih)) { + device_printf(dev, "could not establish interrupt\n"); + bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq); + bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_sr); + goto bad; + } + + sc->sc_cid = crypto_get_driverid(0); + if (sc->sc_cid < 0) { + device_printf(dev, "could not get crypto driver id\n"); + bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); + bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq); + bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_sr); + goto bad; + } + + /* + * Setup DMA descriptor area. + */ + if (bus_dma_tag_create(NULL, /* parent */ + 1, 0, /* alignment, bounds */ + BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + 0x3ffff, /* maxsize XXX */ + UBS_MAX_SCATTER, /* nsegments */ + 0xffff, /* maxsegsize XXX */ + BUS_DMA_ALLOCNOW, /* flags */ + &sc->sc_dmat)) { + device_printf(dev, "cannot allocate DMA tag\n"); + crypto_unregister_all(sc->sc_cid); + bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); + bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq); + bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_sr); + goto bad; + } + 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) { + device_printf(dev, "cannot allocate queue buffers\n"); + break; + } + + if (ubsec_dma_malloc(sc, sizeof(struct ubsec_dmachunk), + &dmap->d_alloc, 0)) { + device_printf(dev, "cannot 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); + } + + device_printf(sc->sc_dev, "%s\n", ubsec_partname(sc)); + + crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0, + ubsec_newsession, ubsec_freesession, ubsec_process, sc); + crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0, + ubsec_newsession, ubsec_freesession, ubsec_process, sc); + crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0, + ubsec_newsession, ubsec_freesession, ubsec_process, sc); + crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0, + ubsec_newsession, ubsec_freesession, ubsec_process, sc); + + /* + * Reset Broadcom chip + */ + ubsec_reset_board(sc); + + /* + * Init Broadcom specific PCI settings + */ + ubsec_init_pciregs(dev); + + /* + * Init Broadcom chip + */ + ubsec_init_board(sc); + +#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; + } + + if (hz >= 100) + sc->sc_rnghz = hz / 100; + else + sc->sc_rnghz = 1; + callout_init(&sc->sc_rngto, 0); + callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc); +skip_rng: + ; + } +#endif /* UBSEC_NO_RNG */ + + if (sc->sc_flags & UBS_FLAGS_KEY) { + sc->sc_statmask |= BS_STAT_MCR2_DONE; + + crypto_kregister(sc->sc_cid, CRK_MOD_EXP, 0, + ubsec_kprocess, sc); + crypto_kregister(sc->sc_cid, CRK_MOD_EXP_CRT, 0, + ubsec_kprocess, sc); + } + return (0); +bad: + mtx_destroy(&sc->sc_mtx); + return (ENXIO); +} + +/* + * Detach a device that successfully probed. + */ +static int +ubsec_detach(device_t dev) +{ + struct ubsec_softc *sc = device_get_softc(dev); + + KASSERT(sc != NULL, ("ubsec_detach: null software carrier")); + + UBSEC_LOCK(sc); + + callout_stop(&sc->sc_rngto); + + crypto_unregister_all(sc->sc_cid); + + bus_generic_detach(dev); + bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); + bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq); + + bus_dma_tag_destroy(sc->sc_dmat); + bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_sr); + + UBSEC_UNLOCK(sc); + + mtx_destroy(&sc->sc_mtx); + + return (0); +} + +/* + * Stop all chip i/o so that the kernel's probe routines don't + * get confused by errant DMAs when rebooting. + */ +static void +ubsec_shutdown(device_t dev) +{ +#ifdef notyet + ubsec_stop(device_get_softc(dev)); +#endif +} + +/* + * Device suspend routine. + */ +static int +ubsec_suspend(device_t dev) +{ + struct ubsec_softc *sc = device_get_softc(dev); + + KASSERT(sc != NULL, ("ubsec_suspend: null software carrier")); +#ifdef notyet + /* XXX stop the device and save PCI settings */ +#endif + sc->sc_suspended = 1; + + return (0); +} + +static int +ubsec_resume(device_t dev) +{ + struct ubsec_softc *sc = device_get_softc(dev); + + KASSERT(sc != NULL, ("ubsec_resume: null software carrier")); +#ifdef notyet + /* XXX retore PCI settings and start the device */ +#endif + sc->sc_suspended = 0; + return (0); +} + +/* + * UBSEC Interrupt routine + */ +static void +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; + + UBSEC_LOCK(sc); + + stat = READ_REG(sc, BS_STAT); + stat &= sc->sc_statmask; + if (stat == 0) { + UBSEC_UNLOCK(sc); + return; + } + + 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, 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]); + ubsecstats.hst_opackets++; + } else { + break; + } + } + ubsec_callback(sc, q); + ubsecstats.hst_opackets++; + } + + /* + * 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, + 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, + BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); + break; + } + SIMPLEQ_REMOVE_HEAD(&sc->sc_qchip2, q2, 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 + if (ubsec_debug) { + volatile u_int32_t a = READ_REG(sc, BS_ERR); + + printf("dmaerr %s@%08x\n", + (a & BS_ERR_READ) ? "read" : "write", + a & BS_ERR_ADDR); + } +#endif /* UBSEC_DEBUG */ + ubsecstats.hst_dmaerr++; + ubsec_totalreset(sc); + ubsec_feed(sc); + } + + if (sc->sc_needwakeup) { /* XXX check high watermark */ + int wakeup = sc->sc_needwakeup & (CRYPTO_SYMQ|CRYPTO_ASYMQ); +#ifdef UBSEC_DEBUG + if (ubsec_debug) + device_printf(sc->sc_dev, "wakeup crypto (%x)\n", + sc->sc_needwakeup); +#endif /* UBSEC_DEBUG */ + sc->sc_needwakeup &= ~wakeup; + crypto_unblock(sc->sc_cid, wakeup); + } + + UBSEC_UNLOCK(sc); +} + +/* + * ubsec_feed() - aggregate and post requests to chip + */ +static int +ubsec_feed(struct ubsec_softc *sc) +{ + 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 > ubsecstats.hst_maxbatch) + ubsecstats.hst_maxbatch = npkts; + if (npkts < 2) + goto feed1; + ubsecstats.hst_totbatch += npkts-1; + + 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 (0); + } + +#ifdef UBSEC_DEBUG + if (ubsec_debug) + printf("merging %d records\n", npkts); +#endif /* UBSEC_DEBUG */ + + q = SIMPLEQ_FIRST(&sc->sc_queue); + SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q, q_next); + --sc->sc_nqueue; + + bus_dmamap_sync(sc->sc_dmat, q->q_src_map, BUS_DMASYNC_PREWRITE); + if (q->q_dst_map != NULL) + bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, 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, + BUS_DMASYNC_PREWRITE); + if (q2->q_dst_map != NULL) + bus_dmamap_sync(sc->sc_dmat, q2->q_dst_map, + BUS_DMASYNC_PREREAD); + SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q2, q_next); + --sc->sc_nqueue; + + v = (void*)(((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, + 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 (0); + +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, + BUS_DMASYNC_PREWRITE); + if (q->q_dst_map != NULL) + bus_dmamap_sync(sc->sc_dmat, q->q_dst_map, + BUS_DMASYNC_PREREAD); + bus_dmamap_sync(sc->sc_dmat, q->q_dma->d_alloc.dma_map, + 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 + if (ubsec_debug) + printf("feed: q->chip %p %08x stat %08x\n", + q, (u_int32_t)vtophys(&q->q_dma->d_dma->d_mcr), + stat); +#endif /* UBSEC_DEBUG */ + SIMPLEQ_REMOVE_HEAD(&sc->sc_queue, q, q_next); + --sc->sc_nqueue; + SIMPLEQ_INSERT_TAIL(&sc->sc_qchip, q, q_next); + } + return (0); +} + +/* + * 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. + */ +static int +ubsec_newsession(void *arg, u_int32_t *sidp, struct cryptoini *cri) +{ + struct cryptoini *c, *encini = NULL, *macini = NULL; + struct ubsec_softc *sc = arg; + struct ubsec_session *ses = NULL; + MD5_CTX md5ctx; + SHA1_CTX sha1ctx; + int i, sesn; + + KASSERT(sc != NULL, ("ubsec_newsession: null softc")); + if (sidp == NULL || cri == NULL || 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 */ + /* XXX may read fewer than requested */ + read_random(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.h.b32, ses->ses_hminner, + sizeof(sha1ctx.h.b32)); + } + + 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.h.b32, ses->ses_hmouter, + sizeof(sha1ctx.h.b32)); + } + + for (i = 0; i < macini->cri_klen / 8; i++) + macini->cri_key[i] ^= HMAC_OPAD_VAL; + } + + *sidp = UBSEC_SID(device_get_unit(sc->sc_dev), sesn); + return (0); +} + +/* + * Deallocate a session. + */ +static int +ubsec_freesession(void *arg, u_int64_t tid) +{ + struct ubsec_softc *sc = arg; + int session; + u_int32_t sid = ((u_int32_t) tid) & 0xffffffff; + + KASSERT(sc != NULL, ("ubsec_freesession: null softc")); + if (sc == NULL) + return (EINVAL); + + session = UBSEC_SESSION(sid); + if (session >= sc->sc_nsessions) + return (EINVAL); + + bzero(&sc->sc_sessions[session], sizeof(sc->sc_sessions[session])); + return (0); +} + +static void +ubsec_op_cb(void *arg, bus_dma_segment_t *seg, int nsegs, bus_size_t mapsize, int error) +{ + struct ubsec_operand *op = arg; + + KASSERT(nsegs <= UBS_MAX_SCATTER, + ("Too many DMA segments returned when mapping operand")); +#ifdef UBSEC_DEBUG + if (ubsec_debug) + printf("ubsec_op_cb: mapsize %u nsegs %d\n", + (u_int) mapsize, nsegs); +#endif + op->mapsize = mapsize; + op->nsegs = nsegs; + bcopy(seg, op->segs, nsegs * sizeof (seg[0])); +} + +static int +ubsec_process(void *arg, struct cryptop *crp, int hint) +{ + struct ubsec_q *q = NULL; + int err = 0, i, j, nicealign; + struct ubsec_softc *sc = arg; + 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 || sc == NULL) { + ubsecstats.hst_invalid++; + return (EINVAL); + } + if (UBSEC_SESSION(crp->crp_sid) >= sc->sc_nsessions) { + ubsecstats.hst_invalid++; + return (EINVAL); + } + + UBSEC_LOCK(sc); + + if (SIMPLEQ_EMPTY(&sc->sc_freequeue)) { + ubsecstats.hst_queuefull++; + sc->sc_needwakeup |= CRYPTO_SYMQ; + UBSEC_UNLOCK(sc); + return (ERESTART); + } + q = SIMPLEQ_FIRST(&sc->sc_freequeue); + SIMPLEQ_REMOVE_HEAD(&sc->sc_freequeue, q, q_next); + UBSEC_UNLOCK(sc); + + 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 { + ubsecstats.hst_invalid++; + 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) { + ubsecstats.hst_invalid++; + 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 { + ubsecstats.hst_invalid++; + 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 + */ + ubsecstats.hst_invalid++; + 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, (caddr_t)ctx.pc_iv); + else if (crp->crp_flags & CRYPTO_F_IOV) + cuio_copyback(q->q_src_io, + enccrd->crd_inject, + 8, (caddr_t)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)) { + ubsecstats.hst_lenmismatch++; + err = EINVAL; + goto errout; + } + if (enccrd->crd_skip < maccrd->crd_skip) { + ubsecstats.hst_skipmismatch++; + 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 + if (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, BUS_DMA_NOWAIT, &q->q_src_map)) { + ubsecstats.hst_nomap++; + 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, ubsec_op_cb, &q->q_src, BUS_DMA_NOWAIT) != 0) { + bus_dmamap_destroy(sc->sc_dmat, q->q_src_map); + q->q_src_map = NULL; + ubsecstats.hst_noload++; + 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, ubsec_op_cb, &q->q_src, BUS_DMA_NOWAIT) != 0) { + bus_dmamap_destroy(sc->sc_dmat, q->q_src_map); + q->q_src_map = NULL; + ubsecstats.hst_noload++; + err = ENOMEM; + goto errout; + } + } + nicealign = ubsec_dmamap_aligned(&q->q_src); + + dmap->d_dma->d_mcr.mcr_pktlen = htole16(stheend); + +#ifdef UBSEC_DEBUG + if (ubsec_debug) + printf("src skip: %d nicealign: %u\n", sskip, nicealign); +#endif + for (i = j = 0; i < q->q_src_nsegs; i++) { + struct ubsec_pktbuf *pb; + bus_size_t packl = q->q_src_segs[i].ds_len; + bus_addr_t packp = q->q_src_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_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 + if (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) { + ubsecstats.hst_iovmisaligned++; + err = EINVAL; + goto errout; + } + if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, + &q->q_dst_map)) { + ubsecstats.hst_nomap++; + err = ENOMEM; + goto errout; + } + if (bus_dmamap_load_uio(sc->sc_dmat, q->q_dst_map, + q->q_dst_io, ubsec_op_cb, &q->q_dst, BUS_DMA_NOWAIT) != 0) { + bus_dmamap_destroy(sc->sc_dmat, q->q_dst_map); + q->q_dst_map = NULL; + ubsecstats.hst_noload++; + err = ENOMEM; + goto errout; + } + } else if (crp->crp_flags & CRYPTO_F_IMBUF) { + if (nicealign) { + q->q_dst = q->q_src; + } else { + int totlen, len; + struct mbuf *m, *top, **mp; + + ubsecstats.hst_unaligned++; + totlen = q->q_src_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) { + ubsecstats.hst_nombuf++; + err = sc->sc_nqueue ? ERESTART : ENOMEM; + goto errout; + } + if (len == MHLEN) + M_COPY_PKTHDR(m, q->q_src_m); + if (totlen >= MINCLSIZE) { + MCLGET(m, M_DONTWAIT); + if ((m->m_flags & M_EXT) == 0) { + m_free(m); + ubsecstats.hst_nomcl++; + err = sc->sc_nqueue ? ERESTART : ENOMEM; + goto errout; + } + 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); + ubsecstats.hst_nombuf++; + err = sc->sc_nqueue ? ERESTART : ENOMEM; + goto errout; + } + len = MLEN; + } + if (top && totlen >= MINCLSIZE) { + MCLGET(m, M_DONTWAIT); + if ((m->m_flags & M_EXT) == 0) { + *mp = m; + m_freem(top); + ubsecstats.hst_nomcl++; + err = sc->sc_nqueue ? ERESTART : ENOMEM; + goto errout; + } + 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, + BUS_DMA_NOWAIT, &q->q_dst_map) != 0) { + ubsecstats.hst_nomap++; + err = ENOMEM; + goto errout; + } + if (bus_dmamap_load_mbuf(sc->sc_dmat, + q->q_dst_map, q->q_dst_m, + ubsec_op_cb, &q->q_dst, + BUS_DMA_NOWAIT) != 0) { + bus_dmamap_destroy(sc->sc_dmat, + q->q_dst_map); + q->q_dst_map = NULL; + ubsecstats.hst_noload++; + err = ENOMEM; + goto errout; + } + } + } else { + ubsecstats.hst_invalid++; + err = EINVAL; + goto errout; + } + +#ifdef UBSEC_DEBUG + if (ubsec_debug) + printf("dst skip: %d\n", dskip); +#endif + for (i = j = 0; i < q->q_dst_nsegs; i++) { + struct ubsec_pktbuf *pb; + bus_size_t packl = q->q_dst_segs[i].ds_len; + bus_addr_t packp = q->q_dst_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_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)); + + UBSEC_LOCK(sc); + SIMPLEQ_INSERT_TAIL(&sc->sc_queue, q, q_next); + sc->sc_nqueue++; + ubsecstats.hst_ipackets++; + ubsecstats.hst_ibytes += dmap->d_alloc.dma_size; + if ((hint & CRYPTO_HINT_MORE) == 0 || sc->sc_nqueue >= ubsec_maxbatch) + ubsec_feed(sc); + UBSEC_UNLOCK(sc); + 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); + } + + UBSEC_LOCK(sc); + SIMPLEQ_INSERT_TAIL(&sc->sc_freequeue, q, q_next); + UBSEC_UNLOCK(sc); + } + if (err != ERESTART) { + crp->crp_etype = err; + crypto_done(crp); + } else { + sc->sc_needwakeup |= CRYPTO_SYMQ; + } + return (err); +} + +static 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; + + bus_dmamap_sync(sc->sc_dmat, dmap->d_alloc.dma_map, + 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, + 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, 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; + } + ubsecstats.hst_obytes += ((struct mbuf *)crp->crp_buf)->m_len; + + /* 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, + (caddr_t)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); +} + +static 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 splimp() or higher. + */ +static int +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, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + bus_dmamap_sync(sc->sc_dmat, q->q_ctx.dma_map, + BUS_DMASYNC_PREWRITE); + + WRITE_REG(sc, BS_MCR2, q->q_mcr.dma_paddr); + SIMPLEQ_REMOVE_HEAD(&sc->sc_queue2, q, q_next); + --sc->sc_nqueue2; + SIMPLEQ_INSERT_TAIL(&sc->sc_qchip2, q, q_next); + } + return (0); +} + +/* + * Callback for handling random numbers + */ +static 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, BUS_DMASYNC_POSTWRITE); + + switch (q->q_type) { +#ifndef UBSEC_NO_RNG + case UBS_CTXOP_RNGBYPASS: { + struct ubsec_q2_rng *rng = (struct ubsec_q2_rng *)q; + + bus_dmamap_sync(sc->sc_dmat, rng->rng_buf.dma_map, + BUS_DMASYNC_POSTREAD); + random_harvest(rng->rng_buf.dma_vaddr, + UBSEC_RNG_BUFSIZ*sizeof (u_int32_t), + UBSEC_RNG_BUFSIZ*sizeof (u_int32_t)*NBBY, 0, + RANDOM_PURE); + rng->rng_used = 0; + callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc); + 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[UBS_MODEXP_PAR_C].crp_nbits + 7) / 8; + + bus_dmamap_sync(sc->sc_dmat, me->me_M.dma_map, + BUS_DMASYNC_POSTWRITE); + bus_dmamap_sync(sc->sc_dmat, me->me_E.dma_map, + BUS_DMASYNC_POSTWRITE); + bus_dmamap_sync(sc->sc_dmat, me->me_C.dma_map, + BUS_DMASYNC_POSTREAD); + bus_dmamap_sync(sc->sc_dmat, me->me_epb.dma_map, + BUS_DMASYNC_POSTWRITE); + + if (clen < rlen) + krp->krp_status = E2BIG; + else + ubsec_kshift_l(me->me_shiftbits, + me->me_C.dma_vaddr, me->me_modbits, + krp->krp_param[UBS_MODEXP_PAR_C].crp_p, + krp->krp_param[UBS_MODEXP_PAR_C].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, + BUS_DMASYNC_POSTWRITE); + bus_dmamap_sync(sc->sc_dmat, rp->rpr_msgout.dma_map, + 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: + device_printf(sc->sc_dev, "unknown ctx op: %x\n", + letoh16(ctx->ctx_op)); + break; + } +} + +#ifndef UBSEC_NO_RNG +static 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; + + UBSEC_LOCK(sc); + if (rng->rng_used) { + UBSEC_UNLOCK(sc); + 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_RNGBYPASS); + rng->rng_q.q_type = UBS_CTXOP_RNGBYPASS; + + bus_dmamap_sync(sc->sc_dmat, rng->rng_buf.dma_map, BUS_DMASYNC_PREREAD); + + SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &rng->rng_q, q_next); + rng->rng_used = 1; + ubsec_feed2(sc); + ubsecstats.hst_rng++; + UBSEC_UNLOCK(sc); + + return; + +out: + /* + * Something weird happened, generate our own call back. + */ + sc->sc_nqueue2--; + UBSEC_UNLOCK(sc); + callout_reset(&sc->sc_rngto, sc->sc_rnghz, ubsec_rng, sc); +} +#endif /* UBSEC_NO_RNG */ + +static void +ubsec_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) +{ + bus_addr_t *paddr = (bus_addr_t*) arg; + *paddr = segs->ds_addr; +} + +static int +ubsec_dma_malloc( + struct ubsec_softc *sc, + bus_size_t size, + struct ubsec_dma_alloc *dma, + int mapflags +) +{ + int r; + + r = bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &dma->dma_map); + if (r != 0) + goto fail_0; + + r = bus_dmamem_alloc(sc->sc_dmat, (void**) &dma->dma_vaddr, + BUS_DMA_NOWAIT, &dma->dma_map); + if (r != 0) + goto fail_1; + + r = bus_dmamap_load(sc->sc_dmat, dma->dma_map, dma->dma_vaddr, + size, + ubsec_dmamap_cb, + &dma->dma_paddr, + mapflags | BUS_DMA_NOWAIT); + if (r != 0) + goto fail_2; + + dma->dma_size = size; + return (0); + +fail_2: + bus_dmamap_unload(sc->sc_dmat, dma->dma_map); +fail_1: + bus_dmamem_free(sc->sc_dmat, dma->dma_vaddr, dma->dma_map); +fail_0: + bus_dmamap_destroy(sc->sc_dmat, dma->dma_map); + dma->dma_map = NULL; + return (r); +} + +static void +ubsec_dma_free(struct ubsec_softc *sc, struct ubsec_dma_alloc *dma) +{ + bus_dmamap_unload(sc->sc_dmat, dma->dma_map); + bus_dmamem_free(sc->sc_dmat, dma->dma_vaddr, dma->dma_map); + 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). + */ +static 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 + */ +static void +ubsec_init_board(struct ubsec_softc *sc) +{ + WRITE_REG(sc, BS_CTRL, + READ_REG(sc, BS_CTRL) | BS_CTRL_MCR1INT | BS_CTRL_DMAERR | + ((sc->sc_flags & UBS_FLAGS_KEY) ? BS_CTRL_MCR2INT : 0)); +} + +/* + * Init Broadcom PCI registers + */ +static void +ubsec_init_pciregs(device_t dev) +{ +#if 0 + u_int32_t misc; + + misc = pci_conf_read(pc, pa->pa_tag, BS_RTY_TOUT); + misc = (misc & ~(UBS_PCI_RTY_MASK << UBS_PCI_RTY_SHIFT)) + | ((UBS_DEF_RTY & 0xff) << UBS_PCI_RTY_SHIFT); + misc = (misc & ~(UBS_PCI_TOUT_MASK << UBS_PCI_TOUT_SHIFT)) + | ((UBS_DEF_TOUT & 0xff) << UBS_PCI_TOUT_SHIFT); + pci_conf_write(pc, pa->pa_tag, BS_RTY_TOUT, misc); +#endif + + /* + * 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 + */ + pci_write_config(dev, PCIR_CACHELNSZ, UBS_DEF_CACHELINE, 1); +} + +/* + * Clean up after a chip crash. + * It is assumed that the caller in splimp() + */ +static 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, q_next); + ubsec_free_q(sc, q); + } +} + +/* + * free a ubsec_q + * It is assumed that the caller is within spimp() + */ +static 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 splimp() + */ +static void +ubsec_totalreset(struct ubsec_softc *sc) +{ + ubsec_reset_board(sc); + ubsec_init_board(sc); + ubsec_cleanchip(sc); +} + +static int +ubsec_dmamap_aligned(struct ubsec_operand *op) +{ + int i; + + for (i = 0; i < op->nsegs; i++) { + if (op->segs[i].ds_addr & 3) + return (0); + if ((i != (op->nsegs - 1)) && + (op->segs[i].ds_len & 3)) + return (0); + } + return (1); +} + +static 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: + device_printf(sc->sc_dev, "invalid kfree 0x%x\n", q->q_type); + break; + } +} + +static int +ubsec_kprocess(void *arg, struct cryptkop *krp, int hint) +{ + struct ubsec_softc *sc = arg; + + if (krp == NULL || krp->krp_callback == 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, q_next); + ubsec_kfree(sc, q); + } + + switch (krp->krp_op) { + case CRK_MOD_EXP: + return (ubsec_kprocess_modexp(sc, krp, hint)); + case CRK_MOD_EXP_CRT: + return (ubsec_kprocess_rsapriv(sc, krp, hint)); + default: + device_printf(sc->sc_dev, "kprocess: invalid op 0x%x\n", + krp->krp_op); + krp->krp_status = EOPNOTSUPP; + crypto_kdone(krp); + return (0); + } +} + +/* + * Start computation of cr[C] = (cr[M] ^ cr[E]) mod cr[N] + */ +static int +ubsec_kprocess_modexp(struct ubsec_softc *sc, struct cryptkop *krp, int hint) +{ + struct ubsec_q2_modexp *me; + struct ubsec_mcr *mcr; + struct ubsec_ctx_modexp *ctx; + struct ubsec_pktbuf *epb; + int err = 0; + u_int nbits, normbits, mbits, shiftbits, ebits; + + me = (struct ubsec_q2_modexp *)malloc(sizeof *me, M_DEVBUF, M_NOWAIT); + if (me == NULL) { + err = ENOMEM; + goto errout; + } + bzero(me, sizeof *me); + 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; + } + + if (sc->sc_flags & UBS_FLAGS_HWNORM) + shiftbits = 0; + else + shiftbits = normbits - nbits; + + me->me_modbits = normbits; + me->me_shiftbits = shiftbits; + + /* Sanity check: result bits must be >= true modulus bits. */ + if (krp->krp_param[UBS_MODEXP_PAR_C].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 + if (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\n", + device_get_nameunit(sc->sc_dev), + letoh32(mcr->mcr_opktbuf.pb_addr)); + if ((letoh32(mcr->mcr_opktbuf.pb_len) & 3) != 0) + panic("%s: modexp invalid len 0x%x\n", + device_get_nameunit(sc->sc_dev), + 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(normbits - shiftbits); + ctx->me_N_len = htole16(normbits - shiftbits); + +#ifdef UBSEC_DEBUG + if (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, BUS_DMASYNC_PREWRITE); + bus_dmamap_sync(sc->sc_dmat, me->me_E.dma_map, BUS_DMASYNC_PREWRITE); + bus_dmamap_sync(sc->sc_dmat, me->me_C.dma_map, BUS_DMASYNC_PREREAD); + bus_dmamap_sync(sc->sc_dmat, me->me_epb.dma_map, BUS_DMASYNC_PREWRITE); + + /* Enqueue and we're done... */ + UBSEC_LOCK(sc); + SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &me->me_q, q_next); + ubsec_feed2(sc); + ubsecstats.hst_modexp++; + UBSEC_UNLOCK(sc); + + 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); +} + +static int +ubsec_kprocess_rsapriv(struct ubsec_softc *sc, struct cryptkop *krp, int hint) +{ + struct ubsec_q2_rsapriv *rp = NULL; + struct ubsec_mcr *mcr; + struct ubsec_ctx_rsapriv *ctx; + int err = 0; + 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 = (struct ubsec_q2_rsapriv *)malloc(sizeof *rp, M_DEVBUF, M_NOWAIT); + if (rp == NULL) + return (ENOMEM); + bzero(rp, sizeof *rp); + 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 %x(0x%x)", + device_get_nameunit(sc->sc_dev), + 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 %x(0x%x)", + device_get_nameunit(sc->sc_dev), + 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, + BUS_DMASYNC_PREWRITE); + bus_dmamap_sync(sc->sc_dmat, rp->rpr_msgout.dma_map, + BUS_DMASYNC_PREREAD); + + /* Enqueue and we're done... */ + UBSEC_LOCK(sc); + SIMPLEQ_INSERT_TAIL(&sc->sc_queue2, &rp->rpr_q, q_next); + ubsec_feed2(sc); + ubsecstats.hst_modexpcrt++; + UBSEC_UNLOCK(sc); + 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); +} + +#ifdef UBSEC_DEBUG +static void +ubsec_dump_pb(volatile struct ubsec_pktbuf *pb) +{ + printf("addr 0x%x (0x%x) next 0x%x\n", + pb->pb_addr, pb->pb_len, pb->pb_next); +} + +static 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"); +} + +static void +ubsec_dump_mcr(struct ubsec_mcr *mcr) +{ + volatile 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 = (volatile 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"); +} +#endif /* UBSEC_DEBUG */ + +/* + * Return the number of significant bits of a big number. + */ +static 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); +} + +static 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; + } +} + +static 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; + } +} |