The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/hifn/hifn7751.c

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    1 /*      $OpenBSD: hifn7751.c,v 1.120 2002/05/17 00:33:34 deraadt Exp $  */
    2 
    3 /*-
    4  * Invertex AEON / Hifn 7751 driver
    5  * Copyright (c) 1999 Invertex Inc. All rights reserved.
    6  * Copyright (c) 1999 Theo de Raadt
    7  * Copyright (c) 2000-2001 Network Security Technologies, Inc.
    8  *                      http://www.netsec.net
    9  * Copyright (c) 2003 Hifn Inc.
   10  *
   11  * This driver is based on a previous driver by Invertex, for which they
   12  * requested:  Please send any comments, feedback, bug-fixes, or feature
   13  * requests to software@invertex.com.
   14  *
   15  * Redistribution and use in source and binary forms, with or without
   16  * modification, are permitted provided that the following conditions
   17  * are met:
   18  *
   19  * 1. Redistributions of source code must retain the above copyright
   20  *   notice, this list of conditions and the following disclaimer.
   21  * 2. Redistributions in binary form must reproduce the above copyright
   22  *   notice, this list of conditions and the following disclaimer in the
   23  *   documentation and/or other materials provided with the distribution.
   24  * 3. The name of the author may not be used to endorse or promote products
   25  *   derived from this software without specific prior written permission.
   26  *
   27  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   28  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   29  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   30  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   31  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   32  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   33  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   34  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   35  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   36  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   37  *
   38  * Effort sponsored in part by the Defense Advanced Research Projects
   39  * Agency (DARPA) and Air Force Research Laboratory, Air Force
   40  * Materiel Command, USAF, under agreement number F30602-01-2-0537.
   41  */
   42 
   43 #include <sys/cdefs.h>
   44 __FBSDID("$FreeBSD$");
   45 
   46 /*
   47  * Driver for various Hifn encryption processors.
   48  */
   49 #include "opt_hifn.h"
   50 
   51 #include <sys/param.h>
   52 #include <sys/systm.h>
   53 #include <sys/proc.h>
   54 #include <sys/errno.h>
   55 #include <sys/malloc.h>
   56 #include <sys/kernel.h>
   57 #include <sys/module.h>
   58 #include <sys/mbuf.h>
   59 #include <sys/lock.h>
   60 #include <sys/mutex.h>
   61 #include <sys/sysctl.h>
   62 
   63 #include <vm/vm.h>
   64 #include <vm/pmap.h>
   65 
   66 #include <machine/bus.h>
   67 #include <machine/resource.h>
   68 #include <sys/bus.h>
   69 #include <sys/rman.h>
   70 
   71 #include <opencrypto/cryptodev.h>
   72 #include <sys/random.h>
   73 
   74 #include <dev/pci/pcivar.h>
   75 #include <dev/pci/pcireg.h>
   76 
   77 #ifdef HIFN_RNDTEST
   78 #include <dev/rndtest/rndtest.h>
   79 #endif
   80 #include <dev/hifn/hifn7751reg.h>
   81 #include <dev/hifn/hifn7751var.h>
   82 
   83 /*
   84  * Prototypes and count for the pci_device structure
   85  */
   86 static  int hifn_probe(device_t);
   87 static  int hifn_attach(device_t);
   88 static  int hifn_detach(device_t);
   89 static  int hifn_suspend(device_t);
   90 static  int hifn_resume(device_t);
   91 static  void hifn_shutdown(device_t);
   92 
   93 static device_method_t hifn_methods[] = {
   94         /* Device interface */
   95         DEVMETHOD(device_probe,         hifn_probe),
   96         DEVMETHOD(device_attach,        hifn_attach),
   97         DEVMETHOD(device_detach,        hifn_detach),
   98         DEVMETHOD(device_suspend,       hifn_suspend),
   99         DEVMETHOD(device_resume,        hifn_resume),
  100         DEVMETHOD(device_shutdown,      hifn_shutdown),
  101 
  102         /* bus interface */
  103         DEVMETHOD(bus_print_child,      bus_generic_print_child),
  104         DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
  105 
  106         { 0, 0 }
  107 };
  108 static driver_t hifn_driver = {
  109         "hifn",
  110         hifn_methods,
  111         sizeof (struct hifn_softc)
  112 };
  113 static devclass_t hifn_devclass;
  114 
  115 DRIVER_MODULE(hifn, pci, hifn_driver, hifn_devclass, 0, 0);
  116 MODULE_DEPEND(hifn, crypto, 1, 1, 1);
  117 #ifdef HIFN_RNDTEST
  118 MODULE_DEPEND(hifn, rndtest, 1, 1, 1);
  119 #endif
  120 
  121 static  void hifn_reset_board(struct hifn_softc *, int);
  122 static  void hifn_reset_puc(struct hifn_softc *);
  123 static  void hifn_puc_wait(struct hifn_softc *);
  124 static  int hifn_enable_crypto(struct hifn_softc *);
  125 static  void hifn_set_retry(struct hifn_softc *sc);
  126 static  void hifn_init_dma(struct hifn_softc *);
  127 static  void hifn_init_pci_registers(struct hifn_softc *);
  128 static  int hifn_sramsize(struct hifn_softc *);
  129 static  int hifn_dramsize(struct hifn_softc *);
  130 static  int hifn_ramtype(struct hifn_softc *);
  131 static  void hifn_sessions(struct hifn_softc *);
  132 static  void hifn_intr(void *);
  133 static  u_int hifn_write_command(struct hifn_command *, u_int8_t *);
  134 static  u_int32_t hifn_next_signature(u_int32_t a, u_int cnt);
  135 static  int hifn_newsession(void *, u_int32_t *, struct cryptoini *);
  136 static  int hifn_freesession(void *, u_int64_t);
  137 static  int hifn_process(void *, struct cryptop *, int);
  138 static  void hifn_callback(struct hifn_softc *, struct hifn_command *, u_int8_t *);
  139 static  int hifn_crypto(struct hifn_softc *, struct hifn_command *, struct cryptop *, int);
  140 static  int hifn_readramaddr(struct hifn_softc *, int, u_int8_t *);
  141 static  int hifn_writeramaddr(struct hifn_softc *, int, u_int8_t *);
  142 static  int hifn_dmamap_load_src(struct hifn_softc *, struct hifn_command *);
  143 static  int hifn_dmamap_load_dst(struct hifn_softc *, struct hifn_command *);
  144 static  int hifn_init_pubrng(struct hifn_softc *);
  145 static  void hifn_rng(void *);
  146 static  void hifn_tick(void *);
  147 static  void hifn_abort(struct hifn_softc *);
  148 static  void hifn_alloc_slot(struct hifn_softc *, int *, int *, int *, int *);
  149 
  150 static  void hifn_write_reg_0(struct hifn_softc *, bus_size_t, u_int32_t);
  151 static  void hifn_write_reg_1(struct hifn_softc *, bus_size_t, u_int32_t);
  152 
  153 static __inline u_int32_t
  154 READ_REG_0(struct hifn_softc *sc, bus_size_t reg)
  155 {
  156     u_int32_t v = bus_space_read_4(sc->sc_st0, sc->sc_sh0, reg);
  157     sc->sc_bar0_lastreg = (bus_size_t) -1;
  158     return (v);
  159 }
  160 #define WRITE_REG_0(sc, reg, val)       hifn_write_reg_0(sc, reg, val)
  161 
  162 static __inline u_int32_t
  163 READ_REG_1(struct hifn_softc *sc, bus_size_t reg)
  164 {
  165     u_int32_t v = bus_space_read_4(sc->sc_st1, sc->sc_sh1, reg);
  166     sc->sc_bar1_lastreg = (bus_size_t) -1;
  167     return (v);
  168 }
  169 #define WRITE_REG_1(sc, reg, val)       hifn_write_reg_1(sc, reg, val)
  170 
  171 SYSCTL_NODE(_hw, OID_AUTO, hifn, CTLFLAG_RD, 0, "Hifn driver parameters");
  172 
  173 #ifdef HIFN_DEBUG
  174 static  int hifn_debug = 0;
  175 SYSCTL_INT(_hw_hifn, OID_AUTO, debug, CTLFLAG_RW, &hifn_debug,
  176             0, "control debugging msgs");
  177 #endif
  178 
  179 static  struct hifn_stats hifnstats;
  180 SYSCTL_STRUCT(_hw_hifn, OID_AUTO, stats, CTLFLAG_RD, &hifnstats,
  181             hifn_stats, "driver statistics");
  182 static  int hifn_maxbatch = 1;
  183 SYSCTL_INT(_hw_hifn, OID_AUTO, maxbatch, CTLFLAG_RW, &hifn_maxbatch,
  184             0, "max ops to batch w/o interrupt");
  185 
  186 /*
  187  * Probe for a supported device.  The PCI vendor and device
  188  * IDs are used to detect devices we know how to handle.
  189  */
  190 static int
  191 hifn_probe(device_t dev)
  192 {
  193         if (pci_get_vendor(dev) == PCI_VENDOR_INVERTEX &&
  194             pci_get_device(dev) == PCI_PRODUCT_INVERTEX_AEON)
  195                 return (BUS_PROBE_DEFAULT);
  196         if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
  197             (pci_get_device(dev) == PCI_PRODUCT_HIFN_7751 ||
  198              pci_get_device(dev) == PCI_PRODUCT_HIFN_7951 ||
  199              pci_get_device(dev) == PCI_PRODUCT_HIFN_7955 ||
  200              pci_get_device(dev) == PCI_PRODUCT_HIFN_7956 ||
  201              pci_get_device(dev) == PCI_PRODUCT_HIFN_7811))
  202                 return (BUS_PROBE_DEFAULT);
  203         if (pci_get_vendor(dev) == PCI_VENDOR_NETSEC &&
  204             pci_get_device(dev) == PCI_PRODUCT_NETSEC_7751)
  205                 return (BUS_PROBE_DEFAULT);
  206         return (ENXIO);
  207 }
  208 
  209 static void
  210 hifn_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
  211 {
  212         bus_addr_t *paddr = (bus_addr_t*) arg;
  213         *paddr = segs->ds_addr;
  214 }
  215 
  216 static const char*
  217 hifn_partname(struct hifn_softc *sc)
  218 {
  219         /* XXX sprintf numbers when not decoded */
  220         switch (pci_get_vendor(sc->sc_dev)) {
  221         case PCI_VENDOR_HIFN:
  222                 switch (pci_get_device(sc->sc_dev)) {
  223                 case PCI_PRODUCT_HIFN_6500:     return "Hifn 6500";
  224                 case PCI_PRODUCT_HIFN_7751:     return "Hifn 7751";
  225                 case PCI_PRODUCT_HIFN_7811:     return "Hifn 7811";
  226                 case PCI_PRODUCT_HIFN_7951:     return "Hifn 7951";
  227                 case PCI_PRODUCT_HIFN_7955:     return "Hifn 7955";
  228                 case PCI_PRODUCT_HIFN_7956:     return "Hifn 7956";
  229                 }
  230                 return "Hifn unknown-part";
  231         case PCI_VENDOR_INVERTEX:
  232                 switch (pci_get_device(sc->sc_dev)) {
  233                 case PCI_PRODUCT_INVERTEX_AEON: return "Invertex AEON";
  234                 }
  235                 return "Invertex unknown-part";
  236         case PCI_VENDOR_NETSEC:
  237                 switch (pci_get_device(sc->sc_dev)) {
  238                 case PCI_PRODUCT_NETSEC_7751:   return "NetSec 7751";
  239                 }
  240                 return "NetSec unknown-part";
  241         }
  242         return "Unknown-vendor unknown-part";
  243 }
  244 
  245 static void
  246 default_harvest(struct rndtest_state *rsp, void *buf, u_int count)
  247 {
  248         random_harvest(buf, count, count*NBBY, 0, RANDOM_PURE);
  249 }
  250 
  251 static u_int
  252 checkmaxmin(device_t dev, const char *what, u_int v, u_int min, u_int max)
  253 {
  254         if (v > max) {
  255                 device_printf(dev, "Warning, %s %u out of range, "
  256                         "using max %u\n", what, v, max);
  257                 v = max;
  258         } else if (v < min) {
  259                 device_printf(dev, "Warning, %s %u out of range, "
  260                         "using min %u\n", what, v, min);
  261                 v = min;
  262         }
  263         return v;
  264 }
  265 
  266 /*
  267  * Select PLL configuration for 795x parts.  This is complicated in
  268  * that we cannot determine the optimal parameters without user input.
  269  * The reference clock is derived from an external clock through a
  270  * multiplier.  The external clock is either the host bus (i.e. PCI)
  271  * or an external clock generator.  When using the PCI bus we assume
  272  * the clock is either 33 or 66 MHz; for an external source we cannot
  273  * tell the speed.
  274  *
  275  * PLL configuration is done with a string: "pci" for PCI bus, or "ext"
  276  * for an external source, followed by the frequency.  We calculate
  277  * the appropriate multiplier and PLL register contents accordingly.
  278  * When no configuration is given we default to "pci66" since that
  279  * always will allow the card to work.  If a card is using the PCI
  280  * bus clock and in a 33MHz slot then it will be operating at half
  281  * speed until the correct information is provided.
  282  */
  283 static void
  284 hifn_getpllconfig(device_t dev, u_int *pll)
  285 {
  286         const char *pllspec;
  287         u_int freq, mul, fl, fh;
  288         u_int32_t pllconfig;
  289         char *nxt;
  290 
  291         if (resource_string_value("hifn", device_get_unit(dev),
  292             "pllconfig", &pllspec))
  293                 pllspec = "pci66";
  294         fl = 33, fh = 66;
  295         pllconfig = 0;
  296         if (strncmp(pllspec, "ext", 3) == 0) {
  297                 pllspec += 3;
  298                 pllconfig |= HIFN_PLL_REF_SEL;
  299                 switch (pci_get_device(dev)) {
  300                 case PCI_PRODUCT_HIFN_7955:
  301                 case PCI_PRODUCT_HIFN_7956:
  302                         fl = 20, fh = 100;
  303                         break;
  304 #ifdef notyet
  305                 case PCI_PRODUCT_HIFN_7954:
  306                         fl = 20, fh = 66;
  307                         break;
  308 #endif
  309                 }
  310         } else if (strncmp(pllspec, "pci", 3) == 0)
  311                 pllspec += 3;
  312         freq = strtoul(pllspec, &nxt, 10);
  313         if (nxt == pllspec)
  314                 freq = 66;
  315         else
  316                 freq = checkmaxmin(dev, "frequency", freq, fl, fh);
  317         /*
  318          * Calculate multiplier.  We target a Fck of 266 MHz,
  319          * allowing only even values, possibly rounded down.
  320          * Multipliers > 8 must set the charge pump current.
  321          */
  322         mul = checkmaxmin(dev, "PLL divisor", (266 / freq) &~ 1, 2, 12);
  323         pllconfig |= (mul / 2 - 1) << HIFN_PLL_ND_SHIFT;
  324         if (mul > 8)
  325                 pllconfig |= HIFN_PLL_IS;
  326         *pll = pllconfig;
  327 }
  328 
  329 /*
  330  * Attach an interface that successfully probed.
  331  */
  332 static int 
  333 hifn_attach(device_t dev)
  334 {
  335         struct hifn_softc *sc = device_get_softc(dev);
  336         u_int32_t cmd;
  337         caddr_t kva;
  338         int rseg, rid;
  339         char rbase;
  340         u_int16_t ena, rev;
  341 
  342         KASSERT(sc != NULL, ("hifn_attach: null software carrier!"));
  343         bzero(sc, sizeof (*sc));
  344         sc->sc_dev = dev;
  345 
  346         mtx_init(&sc->sc_mtx, device_get_nameunit(dev), "hifn driver", MTX_DEF);
  347 
  348         /* XXX handle power management */
  349 
  350         /*
  351          * The 7951 and 795x have a random number generator and
  352          * public key support; note this.
  353          */
  354         if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
  355             (pci_get_device(dev) == PCI_PRODUCT_HIFN_7951 ||
  356              pci_get_device(dev) == PCI_PRODUCT_HIFN_7955 ||
  357              pci_get_device(dev) == PCI_PRODUCT_HIFN_7956))
  358                 sc->sc_flags = HIFN_HAS_RNG | HIFN_HAS_PUBLIC;
  359         /*
  360          * The 7811 has a random number generator and
  361          * we also note it's identity 'cuz of some quirks.
  362          */
  363         if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
  364             pci_get_device(dev) == PCI_PRODUCT_HIFN_7811)
  365                 sc->sc_flags |= HIFN_IS_7811 | HIFN_HAS_RNG;
  366 
  367         /*
  368          * The 795x parts support AES.
  369          */
  370         if (pci_get_vendor(dev) == PCI_VENDOR_HIFN &&
  371             (pci_get_device(dev) == PCI_PRODUCT_HIFN_7955 ||
  372              pci_get_device(dev) == PCI_PRODUCT_HIFN_7956)) {
  373                 sc->sc_flags |= HIFN_IS_7956 | HIFN_HAS_AES;
  374                 /*
  375                  * Select PLL configuration.  This depends on the
  376                  * bus and board design and must be manually configured
  377                  * if the default setting is unacceptable.
  378                  */
  379                 hifn_getpllconfig(dev, &sc->sc_pllconfig);
  380         }
  381 
  382         /*
  383          * Configure support for memory-mapped access to
  384          * registers and for DMA operations.
  385          */
  386 #define PCIM_ENA        (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN)
  387         cmd = pci_read_config(dev, PCIR_COMMAND, 4);
  388         cmd |= PCIM_ENA;
  389         pci_write_config(dev, PCIR_COMMAND, cmd, 4);
  390         cmd = pci_read_config(dev, PCIR_COMMAND, 4);
  391         if ((cmd & PCIM_ENA) != PCIM_ENA) {
  392                 device_printf(dev, "failed to enable %s\n",
  393                         (cmd & PCIM_ENA) == 0 ?
  394                                 "memory mapping & bus mastering" :
  395                         (cmd & PCIM_CMD_MEMEN) == 0 ?
  396                                 "memory mapping" : "bus mastering");
  397                 goto fail_pci;
  398         }
  399 #undef PCIM_ENA
  400 
  401         /*
  402          * Setup PCI resources. Note that we record the bus
  403          * tag and handle for each register mapping, this is
  404          * used by the READ_REG_0, WRITE_REG_0, READ_REG_1,
  405          * and WRITE_REG_1 macros throughout the driver.
  406          */
  407         rid = HIFN_BAR0;
  408         sc->sc_bar0res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
  409                                                 RF_ACTIVE);
  410         if (sc->sc_bar0res == NULL) {
  411                 device_printf(dev, "cannot map bar%d register space\n", 0);
  412                 goto fail_pci;
  413         }
  414         sc->sc_st0 = rman_get_bustag(sc->sc_bar0res);
  415         sc->sc_sh0 = rman_get_bushandle(sc->sc_bar0res);
  416         sc->sc_bar0_lastreg = (bus_size_t) -1;
  417 
  418         rid = HIFN_BAR1;
  419         sc->sc_bar1res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
  420                                                 RF_ACTIVE);
  421         if (sc->sc_bar1res == NULL) {
  422                 device_printf(dev, "cannot map bar%d register space\n", 1);
  423                 goto fail_io0;
  424         }
  425         sc->sc_st1 = rman_get_bustag(sc->sc_bar1res);
  426         sc->sc_sh1 = rman_get_bushandle(sc->sc_bar1res);
  427         sc->sc_bar1_lastreg = (bus_size_t) -1;
  428 
  429         hifn_set_retry(sc);
  430 
  431         /*
  432          * Setup the area where the Hifn DMA's descriptors
  433          * and associated data structures.
  434          */
  435         if (bus_dma_tag_create(NULL,                    /* parent */
  436                                1, 0,                    /* alignment,boundary */
  437                                BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
  438                                BUS_SPACE_MAXADDR,       /* highaddr */
  439                                NULL, NULL,              /* filter, filterarg */
  440                                HIFN_MAX_DMALEN,         /* maxsize */
  441                                MAX_SCATTER,             /* nsegments */
  442                                HIFN_MAX_SEGLEN,         /* maxsegsize */
  443                                BUS_DMA_ALLOCNOW,        /* flags */
  444                                NULL,                    /* lockfunc */
  445                                NULL,                    /* lockarg */
  446                                &sc->sc_dmat)) {
  447                 device_printf(dev, "cannot allocate DMA tag\n");
  448                 goto fail_io1;
  449         }
  450         if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &sc->sc_dmamap)) {
  451                 device_printf(dev, "cannot create dma map\n");
  452                 bus_dma_tag_destroy(sc->sc_dmat);
  453                 goto fail_io1;
  454         }
  455         if (bus_dmamem_alloc(sc->sc_dmat, (void**) &kva, BUS_DMA_NOWAIT, &sc->sc_dmamap)) {
  456                 device_printf(dev, "cannot alloc dma buffer\n");
  457                 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
  458                 bus_dma_tag_destroy(sc->sc_dmat);
  459                 goto fail_io1;
  460         }
  461         if (bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap, kva,
  462                              sizeof (*sc->sc_dma),
  463                              hifn_dmamap_cb, &sc->sc_dma_physaddr,
  464                              BUS_DMA_NOWAIT)) {
  465                 device_printf(dev, "cannot load dma map\n");
  466                 bus_dmamem_free(sc->sc_dmat, kva, sc->sc_dmamap);
  467                 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
  468                 bus_dma_tag_destroy(sc->sc_dmat);
  469                 goto fail_io1;
  470         }
  471         sc->sc_dma = (struct hifn_dma *)kva;
  472         bzero(sc->sc_dma, sizeof(*sc->sc_dma));
  473 
  474         KASSERT(sc->sc_st0 != 0, ("hifn_attach: null bar0 tag!"));
  475         KASSERT(sc->sc_sh0 != 0, ("hifn_attach: null bar0 handle!"));
  476         KASSERT(sc->sc_st1 != 0, ("hifn_attach: null bar1 tag!"));
  477         KASSERT(sc->sc_sh1 != 0, ("hifn_attach: null bar1 handle!"));
  478 
  479         /*
  480          * Reset the board and do the ``secret handshake''
  481          * to enable the crypto support.  Then complete the
  482          * initialization procedure by setting up the interrupt
  483          * and hooking in to the system crypto support so we'll
  484          * get used for system services like the crypto device,
  485          * IPsec, RNG device, etc.
  486          */
  487         hifn_reset_board(sc, 0);
  488 
  489         if (hifn_enable_crypto(sc) != 0) {
  490                 device_printf(dev, "crypto enabling failed\n");
  491                 goto fail_mem;
  492         }
  493         hifn_reset_puc(sc);
  494 
  495         hifn_init_dma(sc);
  496         hifn_init_pci_registers(sc);
  497 
  498         /* XXX can't dynamically determine ram type for 795x; force dram */
  499         if (sc->sc_flags & HIFN_IS_7956)
  500                 sc->sc_drammodel = 1;
  501         else if (hifn_ramtype(sc))
  502                 goto fail_mem;
  503 
  504         if (sc->sc_drammodel == 0)
  505                 hifn_sramsize(sc);
  506         else
  507                 hifn_dramsize(sc);
  508 
  509         /*
  510          * Workaround for NetSec 7751 rev A: half ram size because two
  511          * of the address lines were left floating
  512          */
  513         if (pci_get_vendor(dev) == PCI_VENDOR_NETSEC &&
  514             pci_get_device(dev) == PCI_PRODUCT_NETSEC_7751 &&
  515             pci_get_revid(dev) == 0x61) /*XXX???*/
  516                 sc->sc_ramsize >>= 1;
  517 
  518         /*
  519          * Arrange the interrupt line.
  520          */
  521         rid = 0;
  522         sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
  523                                             RF_SHAREABLE|RF_ACTIVE);
  524         if (sc->sc_irq == NULL) {
  525                 device_printf(dev, "could not map interrupt\n");
  526                 goto fail_mem;
  527         }
  528         /*
  529          * NB: Network code assumes we are blocked with splimp()
  530          *     so make sure the IRQ is marked appropriately.
  531          */
  532         if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_NET | INTR_MPSAFE,
  533                            hifn_intr, sc, &sc->sc_intrhand)) {
  534                 device_printf(dev, "could not setup interrupt\n");
  535                 goto fail_intr2;
  536         }
  537 
  538         hifn_sessions(sc);
  539 
  540         /*
  541          * NB: Keep only the low 16 bits; this masks the chip id
  542          *     from the 7951.
  543          */
  544         rev = READ_REG_1(sc, HIFN_1_REVID) & 0xffff;
  545 
  546         rseg = sc->sc_ramsize / 1024;
  547         rbase = 'K';
  548         if (sc->sc_ramsize >= (1024 * 1024)) {
  549                 rbase = 'M';
  550                 rseg /= 1024;
  551         }
  552         device_printf(sc->sc_dev, "%s, rev %u, %d%cB %cram",
  553                 hifn_partname(sc), rev,
  554                 rseg, rbase, sc->sc_drammodel ? 'd' : 's');
  555         if (sc->sc_flags & HIFN_IS_7956)
  556                 printf(", pll=0x%x<%s clk, %ux mult>",
  557                         sc->sc_pllconfig,
  558                         sc->sc_pllconfig & HIFN_PLL_REF_SEL ? "ext" : "pci",
  559                         2 + 2*((sc->sc_pllconfig & HIFN_PLL_ND) >> 11));
  560         printf("\n");
  561 
  562         sc->sc_cid = crypto_get_driverid(0);
  563         if (sc->sc_cid < 0) {
  564                 device_printf(dev, "could not get crypto driver id\n");
  565                 goto fail_intr;
  566         }
  567 
  568         WRITE_REG_0(sc, HIFN_0_PUCNFG,
  569             READ_REG_0(sc, HIFN_0_PUCNFG) | HIFN_PUCNFG_CHIPID);
  570         ena = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
  571 
  572         switch (ena) {
  573         case HIFN_PUSTAT_ENA_2:
  574                 crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0,
  575                     hifn_newsession, hifn_freesession, hifn_process, sc);
  576                 crypto_register(sc->sc_cid, CRYPTO_ARC4, 0, 0,
  577                     hifn_newsession, hifn_freesession, hifn_process, sc);
  578                 if (sc->sc_flags & HIFN_HAS_AES)
  579                         crypto_register(sc->sc_cid, CRYPTO_AES_CBC,  0, 0,
  580                                 hifn_newsession, hifn_freesession,
  581                                 hifn_process, sc);
  582                 /*FALLTHROUGH*/
  583         case HIFN_PUSTAT_ENA_1:
  584                 crypto_register(sc->sc_cid, CRYPTO_MD5, 0, 0,
  585                     hifn_newsession, hifn_freesession, hifn_process, sc);
  586                 crypto_register(sc->sc_cid, CRYPTO_SHA1, 0, 0,
  587                     hifn_newsession, hifn_freesession, hifn_process, sc);
  588                 crypto_register(sc->sc_cid, CRYPTO_MD5_HMAC, 0, 0,
  589                     hifn_newsession, hifn_freesession, hifn_process, sc);
  590                 crypto_register(sc->sc_cid, CRYPTO_SHA1_HMAC, 0, 0,
  591                     hifn_newsession, hifn_freesession, hifn_process, sc);
  592                 crypto_register(sc->sc_cid, CRYPTO_DES_CBC, 0, 0,
  593                     hifn_newsession, hifn_freesession, hifn_process, sc);
  594                 break;
  595         }
  596 
  597         bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
  598             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
  599 
  600         if (sc->sc_flags & (HIFN_HAS_PUBLIC | HIFN_HAS_RNG))
  601                 hifn_init_pubrng(sc);
  602 
  603         callout_init(&sc->sc_tickto, CALLOUT_MPSAFE);
  604         callout_reset(&sc->sc_tickto, hz, hifn_tick, sc);
  605 
  606         return (0);
  607 
  608 fail_intr:
  609         bus_teardown_intr(dev, sc->sc_irq, sc->sc_intrhand);
  610 fail_intr2:
  611         /* XXX don't store rid */
  612         bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
  613 fail_mem:
  614         bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap);
  615         bus_dmamem_free(sc->sc_dmat, sc->sc_dma, sc->sc_dmamap);
  616         bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
  617         bus_dma_tag_destroy(sc->sc_dmat);
  618 
  619         /* Turn off DMA polling */
  620         WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
  621             HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
  622 fail_io1:
  623         bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR1, sc->sc_bar1res);
  624 fail_io0:
  625         bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR0, sc->sc_bar0res);
  626 fail_pci:
  627         mtx_destroy(&sc->sc_mtx);
  628         return (ENXIO);
  629 }
  630 
  631 /*
  632  * Detach an interface that successfully probed.
  633  */
  634 static int 
  635 hifn_detach(device_t dev)
  636 {
  637         struct hifn_softc *sc = device_get_softc(dev);
  638 
  639         KASSERT(sc != NULL, ("hifn_detach: null software carrier!"));
  640 
  641         /* disable interrupts */
  642         WRITE_REG_1(sc, HIFN_1_DMA_IER, 0);
  643 
  644         /*XXX other resources */
  645         callout_stop(&sc->sc_tickto);
  646         callout_stop(&sc->sc_rngto);
  647 #ifdef HIFN_RNDTEST
  648         if (sc->sc_rndtest)
  649                 rndtest_detach(sc->sc_rndtest);
  650 #endif
  651 
  652         /* Turn off DMA polling */
  653         WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
  654             HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
  655 
  656         crypto_unregister_all(sc->sc_cid);
  657 
  658         bus_generic_detach(dev);        /*XXX should be no children, right? */
  659 
  660         bus_teardown_intr(dev, sc->sc_irq, sc->sc_intrhand);
  661         /* XXX don't store rid */
  662         bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
  663 
  664         bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap);
  665         bus_dmamem_free(sc->sc_dmat, sc->sc_dma, sc->sc_dmamap);
  666         bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
  667         bus_dma_tag_destroy(sc->sc_dmat);
  668 
  669         bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR1, sc->sc_bar1res);
  670         bus_release_resource(dev, SYS_RES_MEMORY, HIFN_BAR0, sc->sc_bar0res);
  671 
  672         mtx_destroy(&sc->sc_mtx);
  673 
  674         return (0);
  675 }
  676 
  677 /*
  678  * Stop all chip I/O so that the kernel's probe routines don't
  679  * get confused by errant DMAs when rebooting.
  680  */
  681 static void
  682 hifn_shutdown(device_t dev)
  683 {
  684 #ifdef notyet
  685         hifn_stop(device_get_softc(dev));
  686 #endif
  687 }
  688 
  689 /*
  690  * Device suspend routine.  Stop the interface and save some PCI
  691  * settings in case the BIOS doesn't restore them properly on
  692  * resume.
  693  */
  694 static int
  695 hifn_suspend(device_t dev)
  696 {
  697         struct hifn_softc *sc = device_get_softc(dev);
  698 #ifdef notyet
  699         hifn_stop(sc);
  700 #endif
  701         sc->sc_suspended = 1;
  702 
  703         return (0);
  704 }
  705 
  706 /*
  707  * Device resume routine.  Restore some PCI settings in case the BIOS
  708  * doesn't, re-enable busmastering, and restart the interface if
  709  * appropriate.
  710  */
  711 static int
  712 hifn_resume(device_t dev)
  713 {
  714         struct hifn_softc *sc = device_get_softc(dev);
  715 #ifdef notyet
  716         /* reenable busmastering */
  717         pci_enable_busmaster(dev);
  718         pci_enable_io(dev, HIFN_RES);
  719 
  720         /* reinitialize interface if necessary */
  721         if (ifp->if_flags & IFF_UP)
  722                 rl_init(sc);
  723 #endif
  724         sc->sc_suspended = 0;
  725 
  726         return (0);
  727 }
  728 
  729 static int
  730 hifn_init_pubrng(struct hifn_softc *sc)
  731 {
  732         u_int32_t r;
  733         int i;
  734 
  735 #ifdef HIFN_RNDTEST
  736         sc->sc_rndtest = rndtest_attach(sc->sc_dev);
  737         if (sc->sc_rndtest)
  738                 sc->sc_harvest = rndtest_harvest;
  739         else
  740                 sc->sc_harvest = default_harvest;
  741 #else
  742         sc->sc_harvest = default_harvest;
  743 #endif
  744         if ((sc->sc_flags & HIFN_IS_7811) == 0) {
  745                 /* Reset 7951 public key/rng engine */
  746                 WRITE_REG_1(sc, HIFN_1_PUB_RESET,
  747                     READ_REG_1(sc, HIFN_1_PUB_RESET) | HIFN_PUBRST_RESET);
  748 
  749                 for (i = 0; i < 100; i++) {
  750                         DELAY(1000);
  751                         if ((READ_REG_1(sc, HIFN_1_PUB_RESET) &
  752                             HIFN_PUBRST_RESET) == 0)
  753                                 break;
  754                 }
  755 
  756                 if (i == 100) {
  757                         device_printf(sc->sc_dev, "public key init failed\n");
  758                         return (1);
  759                 }
  760         }
  761 
  762         /* Enable the rng, if available */
  763         if (sc->sc_flags & HIFN_HAS_RNG) {
  764                 if (sc->sc_flags & HIFN_IS_7811) {
  765                         r = READ_REG_1(sc, HIFN_1_7811_RNGENA);
  766                         if (r & HIFN_7811_RNGENA_ENA) {
  767                                 r &= ~HIFN_7811_RNGENA_ENA;
  768                                 WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r);
  769                         }
  770                         WRITE_REG_1(sc, HIFN_1_7811_RNGCFG,
  771                             HIFN_7811_RNGCFG_DEFL);
  772                         r |= HIFN_7811_RNGENA_ENA;
  773                         WRITE_REG_1(sc, HIFN_1_7811_RNGENA, r);
  774                 } else
  775                         WRITE_REG_1(sc, HIFN_1_RNG_CONFIG,
  776                             READ_REG_1(sc, HIFN_1_RNG_CONFIG) |
  777                             HIFN_RNGCFG_ENA);
  778 
  779                 sc->sc_rngfirst = 1;
  780                 if (hz >= 100)
  781                         sc->sc_rnghz = hz / 100;
  782                 else
  783                         sc->sc_rnghz = 1;
  784                 callout_init(&sc->sc_rngto, CALLOUT_MPSAFE);
  785                 callout_reset(&sc->sc_rngto, sc->sc_rnghz, hifn_rng, sc);
  786         }
  787 
  788         /* Enable public key engine, if available */
  789         if (sc->sc_flags & HIFN_HAS_PUBLIC) {
  790                 WRITE_REG_1(sc, HIFN_1_PUB_IEN, HIFN_PUBIEN_DONE);
  791                 sc->sc_dmaier |= HIFN_DMAIER_PUBDONE;
  792                 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
  793         }
  794 
  795         return (0);
  796 }
  797 
  798 static void
  799 hifn_rng(void *vsc)
  800 {
  801 #define RANDOM_BITS(n)  (n)*sizeof (u_int32_t), (n)*sizeof (u_int32_t)*NBBY, 0
  802         struct hifn_softc *sc = vsc;
  803         u_int32_t sts, num[2];
  804         int i;
  805 
  806         if (sc->sc_flags & HIFN_IS_7811) {
  807                 for (i = 0; i < 5; i++) {
  808                         sts = READ_REG_1(sc, HIFN_1_7811_RNGSTS);
  809                         if (sts & HIFN_7811_RNGSTS_UFL) {
  810                                 device_printf(sc->sc_dev,
  811                                               "RNG underflow: disabling\n");
  812                                 return;
  813                         }
  814                         if ((sts & HIFN_7811_RNGSTS_RDY) == 0)
  815                                 break;
  816 
  817                         /*
  818                          * There are at least two words in the RNG FIFO
  819                          * at this point.
  820                          */
  821                         num[0] = READ_REG_1(sc, HIFN_1_7811_RNGDAT);
  822                         num[1] = READ_REG_1(sc, HIFN_1_7811_RNGDAT);
  823                         /* NB: discard first data read */
  824                         if (sc->sc_rngfirst)
  825                                 sc->sc_rngfirst = 0;
  826                         else
  827                                 (*sc->sc_harvest)(sc->sc_rndtest,
  828                                         num, sizeof (num));
  829                 }
  830         } else {
  831                 num[0] = READ_REG_1(sc, HIFN_1_RNG_DATA);
  832 
  833                 /* NB: discard first data read */
  834                 if (sc->sc_rngfirst)
  835                         sc->sc_rngfirst = 0;
  836                 else
  837                         (*sc->sc_harvest)(sc->sc_rndtest,
  838                                 num, sizeof (num[0]));
  839         }
  840 
  841         callout_reset(&sc->sc_rngto, sc->sc_rnghz, hifn_rng, sc);
  842 #undef RANDOM_BITS
  843 }
  844 
  845 static void
  846 hifn_puc_wait(struct hifn_softc *sc)
  847 {
  848         int i;
  849 
  850         for (i = 5000; i > 0; i--) {
  851                 DELAY(1);
  852                 if (!(READ_REG_0(sc, HIFN_0_PUCTRL) & HIFN_PUCTRL_RESET))
  853                         break;
  854         }
  855         if (!i)
  856                 device_printf(sc->sc_dev, "proc unit did not reset\n");
  857 }
  858 
  859 /*
  860  * Reset the processing unit.
  861  */
  862 static void
  863 hifn_reset_puc(struct hifn_softc *sc)
  864 {
  865         /* Reset processing unit */
  866         WRITE_REG_0(sc, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA);
  867         hifn_puc_wait(sc);
  868 }
  869 
  870 /*
  871  * Set the Retry and TRDY registers; note that we set them to
  872  * zero because the 7811 locks up when forced to retry (section
  873  * 3.6 of "Specification Update SU-0014-04".  Not clear if we
  874  * should do this for all Hifn parts, but it doesn't seem to hurt.
  875  */
  876 static void
  877 hifn_set_retry(struct hifn_softc *sc)
  878 {
  879         /* NB: RETRY only responds to 8-bit reads/writes */
  880         pci_write_config(sc->sc_dev, HIFN_RETRY_TIMEOUT, 0, 1);
  881         pci_write_config(sc->sc_dev, HIFN_TRDY_TIMEOUT, 0, 4);
  882 }
  883 
  884 /*
  885  * Resets the board.  Values in the regesters are left as is
  886  * from the reset (i.e. initial values are assigned elsewhere).
  887  */
  888 static void
  889 hifn_reset_board(struct hifn_softc *sc, int full)
  890 {
  891         u_int32_t reg;
  892 
  893         /*
  894          * Set polling in the DMA configuration register to zero.  0x7 avoids
  895          * resetting the board and zeros out the other fields.
  896          */
  897         WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
  898             HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
  899 
  900         /*
  901          * Now that polling has been disabled, we have to wait 1 ms
  902          * before resetting the board.
  903          */
  904         DELAY(1000);
  905 
  906         /* Reset the DMA unit */
  907         if (full) {
  908                 WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MODE);
  909                 DELAY(1000);
  910         } else {
  911                 WRITE_REG_1(sc, HIFN_1_DMA_CNFG,
  912                     HIFN_DMACNFG_MODE | HIFN_DMACNFG_MSTRESET);
  913                 hifn_reset_puc(sc);
  914         }
  915 
  916         KASSERT(sc->sc_dma != NULL, ("hifn_reset_board: null DMA tag!"));
  917         bzero(sc->sc_dma, sizeof(*sc->sc_dma));
  918 
  919         /* Bring dma unit out of reset */
  920         WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
  921             HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
  922 
  923         hifn_puc_wait(sc);
  924         hifn_set_retry(sc);
  925 
  926         if (sc->sc_flags & HIFN_IS_7811) {
  927                 for (reg = 0; reg < 1000; reg++) {
  928                         if (READ_REG_1(sc, HIFN_1_7811_MIPSRST) &
  929                             HIFN_MIPSRST_CRAMINIT)
  930                                 break;
  931                         DELAY(1000);
  932                 }
  933                 if (reg == 1000)
  934                         printf(": cram init timeout\n");
  935         }
  936 }
  937 
  938 static u_int32_t
  939 hifn_next_signature(u_int32_t a, u_int cnt)
  940 {
  941         int i;
  942         u_int32_t v;
  943 
  944         for (i = 0; i < cnt; i++) {
  945 
  946                 /* get the parity */
  947                 v = a & 0x80080125;
  948                 v ^= v >> 16;
  949                 v ^= v >> 8;
  950                 v ^= v >> 4;
  951                 v ^= v >> 2;
  952                 v ^= v >> 1;
  953 
  954                 a = (v & 1) ^ (a << 1);
  955         }
  956 
  957         return a;
  958 }
  959 
  960 struct pci2id {
  961         u_short         pci_vendor;
  962         u_short         pci_prod;
  963         char            card_id[13];
  964 };
  965 static struct pci2id pci2id[] = {
  966         {
  967                 PCI_VENDOR_HIFN,
  968                 PCI_PRODUCT_HIFN_7951,
  969                 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  970                   0x00, 0x00, 0x00, 0x00, 0x00 }
  971         }, {
  972                 PCI_VENDOR_HIFN,
  973                 PCI_PRODUCT_HIFN_7955,
  974                 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  975                   0x00, 0x00, 0x00, 0x00, 0x00 }
  976         }, {
  977                 PCI_VENDOR_HIFN,
  978                 PCI_PRODUCT_HIFN_7956,
  979                 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  980                   0x00, 0x00, 0x00, 0x00, 0x00 }
  981         }, {
  982                 PCI_VENDOR_NETSEC,
  983                 PCI_PRODUCT_NETSEC_7751,
  984                 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  985                   0x00, 0x00, 0x00, 0x00, 0x00 }
  986         }, {
  987                 PCI_VENDOR_INVERTEX,
  988                 PCI_PRODUCT_INVERTEX_AEON,
  989                 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  990                   0x00, 0x00, 0x00, 0x00, 0x00 }
  991         }, {
  992                 PCI_VENDOR_HIFN,
  993                 PCI_PRODUCT_HIFN_7811,
  994                 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  995                   0x00, 0x00, 0x00, 0x00, 0x00 }
  996         }, {
  997                 /*
  998                  * Other vendors share this PCI ID as well, such as
  999                  * http://www.powercrypt.com, and obviously they also
 1000                  * use the same key.
 1001                  */
 1002                 PCI_VENDOR_HIFN,
 1003                 PCI_PRODUCT_HIFN_7751,
 1004                 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 1005                   0x00, 0x00, 0x00, 0x00, 0x00 }
 1006         },
 1007 };
 1008 
 1009 /*
 1010  * Checks to see if crypto is already enabled.  If crypto isn't enable,
 1011  * "hifn_enable_crypto" is called to enable it.  The check is important,
 1012  * as enabling crypto twice will lock the board.
 1013  */
 1014 static int 
 1015 hifn_enable_crypto(struct hifn_softc *sc)
 1016 {
 1017         u_int32_t dmacfg, ramcfg, encl, addr, i;
 1018         char *offtbl = NULL;
 1019 
 1020         for (i = 0; i < sizeof(pci2id)/sizeof(pci2id[0]); i++) {
 1021                 if (pci2id[i].pci_vendor == pci_get_vendor(sc->sc_dev) &&
 1022                     pci2id[i].pci_prod == pci_get_device(sc->sc_dev)) {
 1023                         offtbl = pci2id[i].card_id;
 1024                         break;
 1025                 }
 1026         }
 1027         if (offtbl == NULL) {
 1028                 device_printf(sc->sc_dev, "Unknown card!\n");
 1029                 return (1);
 1030         }
 1031 
 1032         ramcfg = READ_REG_0(sc, HIFN_0_PUCNFG);
 1033         dmacfg = READ_REG_1(sc, HIFN_1_DMA_CNFG);
 1034 
 1035         /*
 1036          * The RAM config register's encrypt level bit needs to be set before
 1037          * every read performed on the encryption level register.
 1038          */
 1039         WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID);
 1040 
 1041         encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
 1042 
 1043         /*
 1044          * Make sure we don't re-unlock.  Two unlocks kills chip until the
 1045          * next reboot.
 1046          */
 1047         if (encl == HIFN_PUSTAT_ENA_1 || encl == HIFN_PUSTAT_ENA_2) {
 1048 #ifdef HIFN_DEBUG
 1049                 if (hifn_debug)
 1050                         device_printf(sc->sc_dev,
 1051                             "Strong crypto already enabled!\n");
 1052 #endif
 1053                 goto report;
 1054         }
 1055 
 1056         if (encl != 0 && encl != HIFN_PUSTAT_ENA_0) {
 1057 #ifdef HIFN_DEBUG
 1058                 if (hifn_debug)
 1059                         device_printf(sc->sc_dev,
 1060                               "Unknown encryption level 0x%x\n", encl);
 1061 #endif
 1062                 return 1;
 1063         }
 1064 
 1065         WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_UNLOCK |
 1066             HIFN_DMACNFG_MSTRESET | HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
 1067         DELAY(1000);
 1068         addr = READ_REG_1(sc, HIFN_UNLOCK_SECRET1);
 1069         DELAY(1000);
 1070         WRITE_REG_1(sc, HIFN_UNLOCK_SECRET2, 0);
 1071         DELAY(1000);
 1072 
 1073         for (i = 0; i <= 12; i++) {
 1074                 addr = hifn_next_signature(addr, offtbl[i] + 0x101);
 1075                 WRITE_REG_1(sc, HIFN_UNLOCK_SECRET2, addr);
 1076 
 1077                 DELAY(1000);
 1078         }
 1079 
 1080         WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg | HIFN_PUCNFG_CHIPID);
 1081         encl = READ_REG_0(sc, HIFN_0_PUSTAT) & HIFN_PUSTAT_CHIPENA;
 1082 
 1083 #ifdef HIFN_DEBUG
 1084         if (hifn_debug) {
 1085                 if (encl != HIFN_PUSTAT_ENA_1 && encl != HIFN_PUSTAT_ENA_2)
 1086                         device_printf(sc->sc_dev, "Engine is permanently "
 1087                                 "locked until next system reset!\n");
 1088                 else
 1089                         device_printf(sc->sc_dev, "Engine enabled "
 1090                                 "successfully!\n");
 1091         }
 1092 #endif
 1093 
 1094 report:
 1095         WRITE_REG_0(sc, HIFN_0_PUCNFG, ramcfg);
 1096         WRITE_REG_1(sc, HIFN_1_DMA_CNFG, dmacfg);
 1097 
 1098         switch (encl) {
 1099         case HIFN_PUSTAT_ENA_1:
 1100         case HIFN_PUSTAT_ENA_2:
 1101                 break;
 1102         case HIFN_PUSTAT_ENA_0:
 1103         default:
 1104                 device_printf(sc->sc_dev, "disabled");
 1105                 break;
 1106         }
 1107 
 1108         return 0;
 1109 }
 1110 
 1111 /*
 1112  * Give initial values to the registers listed in the "Register Space"
 1113  * section of the HIFN Software Development reference manual.
 1114  */
 1115 static void 
 1116 hifn_init_pci_registers(struct hifn_softc *sc)
 1117 {
 1118         /* write fixed values needed by the Initialization registers */
 1119         WRITE_REG_0(sc, HIFN_0_PUCTRL, HIFN_PUCTRL_DMAENA);
 1120         WRITE_REG_0(sc, HIFN_0_FIFOCNFG, HIFN_FIFOCNFG_THRESHOLD);
 1121         WRITE_REG_0(sc, HIFN_0_PUIER, HIFN_PUIER_DSTOVER);
 1122 
 1123         /* write all 4 ring address registers */
 1124         WRITE_REG_1(sc, HIFN_1_DMA_CRAR, sc->sc_dma_physaddr +
 1125             offsetof(struct hifn_dma, cmdr[0]));
 1126         WRITE_REG_1(sc, HIFN_1_DMA_SRAR, sc->sc_dma_physaddr +
 1127             offsetof(struct hifn_dma, srcr[0]));
 1128         WRITE_REG_1(sc, HIFN_1_DMA_DRAR, sc->sc_dma_physaddr +
 1129             offsetof(struct hifn_dma, dstr[0]));
 1130         WRITE_REG_1(sc, HIFN_1_DMA_RRAR, sc->sc_dma_physaddr +
 1131             offsetof(struct hifn_dma, resr[0]));
 1132 
 1133         DELAY(2000);
 1134 
 1135         /* write status register */
 1136         WRITE_REG_1(sc, HIFN_1_DMA_CSR,
 1137             HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS |
 1138             HIFN_DMACSR_S_CTRL_DIS | HIFN_DMACSR_C_CTRL_DIS |
 1139             HIFN_DMACSR_D_ABORT | HIFN_DMACSR_D_DONE | HIFN_DMACSR_D_LAST |
 1140             HIFN_DMACSR_D_WAIT | HIFN_DMACSR_D_OVER |
 1141             HIFN_DMACSR_R_ABORT | HIFN_DMACSR_R_DONE | HIFN_DMACSR_R_LAST |
 1142             HIFN_DMACSR_R_WAIT | HIFN_DMACSR_R_OVER |
 1143             HIFN_DMACSR_S_ABORT | HIFN_DMACSR_S_DONE | HIFN_DMACSR_S_LAST |
 1144             HIFN_DMACSR_S_WAIT |
 1145             HIFN_DMACSR_C_ABORT | HIFN_DMACSR_C_DONE | HIFN_DMACSR_C_LAST |
 1146             HIFN_DMACSR_C_WAIT |
 1147             HIFN_DMACSR_ENGINE |
 1148             ((sc->sc_flags & HIFN_HAS_PUBLIC) ?
 1149                 HIFN_DMACSR_PUBDONE : 0) |
 1150             ((sc->sc_flags & HIFN_IS_7811) ?
 1151                 HIFN_DMACSR_ILLW | HIFN_DMACSR_ILLR : 0));
 1152 
 1153         sc->sc_d_busy = sc->sc_r_busy = sc->sc_s_busy = sc->sc_c_busy = 0;
 1154         sc->sc_dmaier |= HIFN_DMAIER_R_DONE | HIFN_DMAIER_C_ABORT |
 1155             HIFN_DMAIER_D_OVER | HIFN_DMAIER_R_OVER |
 1156             HIFN_DMAIER_S_ABORT | HIFN_DMAIER_D_ABORT | HIFN_DMAIER_R_ABORT |
 1157             ((sc->sc_flags & HIFN_IS_7811) ?
 1158                 HIFN_DMAIER_ILLW | HIFN_DMAIER_ILLR : 0);
 1159         sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT;
 1160         WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
 1161 
 1162 
 1163         if (sc->sc_flags & HIFN_IS_7956) {
 1164                 u_int32_t pll;
 1165 
 1166                 WRITE_REG_0(sc, HIFN_0_PUCNFG, HIFN_PUCNFG_COMPSING |
 1167                     HIFN_PUCNFG_TCALLPHASES |
 1168                     HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32);
 1169 
 1170                 /* turn off the clocks and insure bypass is set */
 1171                 pll = READ_REG_1(sc, HIFN_1_PLL);
 1172                 pll = (pll &~ (HIFN_PLL_PK_CLK_SEL | HIFN_PLL_PE_CLK_SEL))
 1173                     | HIFN_PLL_BP;
 1174                 WRITE_REG_1(sc, HIFN_1_PLL, pll);
 1175                 DELAY(10*1000);         /* 10ms */
 1176                 /* change configuration */
 1177                 pll = (pll &~ HIFN_PLL_CONFIG) | sc->sc_pllconfig;
 1178                 WRITE_REG_1(sc, HIFN_1_PLL, pll);
 1179                 DELAY(10*1000);         /* 10ms */
 1180                 /* disable bypass */
 1181                 pll &= ~HIFN_PLL_BP;
 1182                 WRITE_REG_1(sc, HIFN_1_PLL, pll);
 1183                 /* enable clocks with new configuration */
 1184                 pll |= HIFN_PLL_PK_CLK_SEL | HIFN_PLL_PE_CLK_SEL;
 1185                 WRITE_REG_1(sc, HIFN_1_PLL, pll);
 1186         } else {
 1187                 WRITE_REG_0(sc, HIFN_0_PUCNFG, HIFN_PUCNFG_COMPSING |
 1188                     HIFN_PUCNFG_DRFR_128 | HIFN_PUCNFG_TCALLPHASES |
 1189                     HIFN_PUCNFG_TCDRVTOTEM | HIFN_PUCNFG_BUS32 |
 1190                     (sc->sc_drammodel ? HIFN_PUCNFG_DRAM : HIFN_PUCNFG_SRAM));
 1191         }
 1192 
 1193         WRITE_REG_0(sc, HIFN_0_PUISR, HIFN_PUISR_DSTOVER);
 1194         WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
 1195             HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE | HIFN_DMACNFG_LAST |
 1196             ((HIFN_POLL_FREQUENCY << 16 ) & HIFN_DMACNFG_POLLFREQ) |
 1197             ((HIFN_POLL_SCALAR << 8) & HIFN_DMACNFG_POLLINVAL));
 1198 }
 1199 
 1200 /*
 1201  * The maximum number of sessions supported by the card
 1202  * is dependent on the amount of context ram, which
 1203  * encryption algorithms are enabled, and how compression
 1204  * is configured.  This should be configured before this
 1205  * routine is called.
 1206  */
 1207 static void
 1208 hifn_sessions(struct hifn_softc *sc)
 1209 {
 1210         u_int32_t pucnfg;
 1211         int ctxsize;
 1212 
 1213         pucnfg = READ_REG_0(sc, HIFN_0_PUCNFG);
 1214 
 1215         if (pucnfg & HIFN_PUCNFG_COMPSING) {
 1216                 if (pucnfg & HIFN_PUCNFG_ENCCNFG)
 1217                         ctxsize = 128;
 1218                 else
 1219                         ctxsize = 512;
 1220                 /*
 1221                  * 7955/7956 has internal context memory of 32K
 1222                  */
 1223                 if (sc->sc_flags & HIFN_IS_7956)
 1224                         sc->sc_maxses = 32768 / ctxsize;
 1225                 else
 1226                         sc->sc_maxses = 1 +
 1227                             ((sc->sc_ramsize - 32768) / ctxsize);
 1228         } else
 1229                 sc->sc_maxses = sc->sc_ramsize / 16384;
 1230 
 1231         if (sc->sc_maxses > 2048)
 1232                 sc->sc_maxses = 2048;
 1233 }
 1234 
 1235 /*
 1236  * Determine ram type (sram or dram).  Board should be just out of a reset
 1237  * state when this is called.
 1238  */
 1239 static int
 1240 hifn_ramtype(struct hifn_softc *sc)
 1241 {
 1242         u_int8_t data[8], dataexpect[8];
 1243         int i;
 1244 
 1245         for (i = 0; i < sizeof(data); i++)
 1246                 data[i] = dataexpect[i] = 0x55;
 1247         if (hifn_writeramaddr(sc, 0, data))
 1248                 return (-1);
 1249         if (hifn_readramaddr(sc, 0, data))
 1250                 return (-1);
 1251         if (bcmp(data, dataexpect, sizeof(data)) != 0) {
 1252                 sc->sc_drammodel = 1;
 1253                 return (0);
 1254         }
 1255 
 1256         for (i = 0; i < sizeof(data); i++)
 1257                 data[i] = dataexpect[i] = 0xaa;
 1258         if (hifn_writeramaddr(sc, 0, data))
 1259                 return (-1);
 1260         if (hifn_readramaddr(sc, 0, data))
 1261                 return (-1);
 1262         if (bcmp(data, dataexpect, sizeof(data)) != 0) {
 1263                 sc->sc_drammodel = 1;
 1264                 return (0);
 1265         }
 1266 
 1267         return (0);
 1268 }
 1269 
 1270 #define HIFN_SRAM_MAX           (32 << 20)
 1271 #define HIFN_SRAM_STEP_SIZE     16384
 1272 #define HIFN_SRAM_GRANULARITY   (HIFN_SRAM_MAX / HIFN_SRAM_STEP_SIZE)
 1273 
 1274 static int
 1275 hifn_sramsize(struct hifn_softc *sc)
 1276 {
 1277         u_int32_t a;
 1278         u_int8_t data[8];
 1279         u_int8_t dataexpect[sizeof(data)];
 1280         int32_t i;
 1281 
 1282         for (i = 0; i < sizeof(data); i++)
 1283                 data[i] = dataexpect[i] = i ^ 0x5a;
 1284 
 1285         for (i = HIFN_SRAM_GRANULARITY - 1; i >= 0; i--) {
 1286                 a = i * HIFN_SRAM_STEP_SIZE;
 1287                 bcopy(&i, data, sizeof(i));
 1288                 hifn_writeramaddr(sc, a, data);
 1289         }
 1290 
 1291         for (i = 0; i < HIFN_SRAM_GRANULARITY; i++) {
 1292                 a = i * HIFN_SRAM_STEP_SIZE;
 1293                 bcopy(&i, dataexpect, sizeof(i));
 1294                 if (hifn_readramaddr(sc, a, data) < 0)
 1295                         return (0);
 1296                 if (bcmp(data, dataexpect, sizeof(data)) != 0)
 1297                         return (0);
 1298                 sc->sc_ramsize = a + HIFN_SRAM_STEP_SIZE;
 1299         }
 1300 
 1301         return (0);
 1302 }
 1303 
 1304 /*
 1305  * XXX For dram boards, one should really try all of the
 1306  * HIFN_PUCNFG_DSZ_*'s.  This just assumes that PUCNFG
 1307  * is already set up correctly.
 1308  */
 1309 static int
 1310 hifn_dramsize(struct hifn_softc *sc)
 1311 {
 1312         u_int32_t cnfg;
 1313 
 1314         if (sc->sc_flags & HIFN_IS_7956) {
 1315                 /*
 1316                  * 7955/7956 have a fixed internal ram of only 32K.
 1317                  */
 1318                 sc->sc_ramsize = 32768;
 1319         } else {
 1320                 cnfg = READ_REG_0(sc, HIFN_0_PUCNFG) &
 1321                     HIFN_PUCNFG_DRAMMASK;
 1322                 sc->sc_ramsize = 1 << ((cnfg >> 13) + 18);
 1323         }
 1324         return (0);
 1325 }
 1326 
 1327 static void
 1328 hifn_alloc_slot(struct hifn_softc *sc, int *cmdp, int *srcp, int *dstp, int *resp)
 1329 {
 1330         struct hifn_dma *dma = sc->sc_dma;
 1331 
 1332         if (dma->cmdi == HIFN_D_CMD_RSIZE) {
 1333                 dma->cmdi = 0;
 1334                 dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_VALID |
 1335                     HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
 1336                 HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE,
 1337                     BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
 1338         }
 1339         *cmdp = dma->cmdi++;
 1340         dma->cmdk = dma->cmdi;
 1341 
 1342         if (dma->srci == HIFN_D_SRC_RSIZE) {
 1343                 dma->srci = 0;
 1344                 dma->srcr[HIFN_D_SRC_RSIZE].l = htole32(HIFN_D_VALID |
 1345                     HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
 1346                 HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE,
 1347                     BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
 1348         }
 1349         *srcp = dma->srci++;
 1350         dma->srck = dma->srci;
 1351 
 1352         if (dma->dsti == HIFN_D_DST_RSIZE) {
 1353                 dma->dsti = 0;
 1354                 dma->dstr[HIFN_D_DST_RSIZE].l = htole32(HIFN_D_VALID |
 1355                     HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
 1356                 HIFN_DSTR_SYNC(sc, HIFN_D_DST_RSIZE,
 1357                     BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
 1358         }
 1359         *dstp = dma->dsti++;
 1360         dma->dstk = dma->dsti;
 1361 
 1362         if (dma->resi == HIFN_D_RES_RSIZE) {
 1363                 dma->resi = 0;
 1364                 dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_VALID |
 1365                     HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
 1366                 HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE,
 1367                     BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
 1368         }
 1369         *resp = dma->resi++;
 1370         dma->resk = dma->resi;
 1371 }
 1372 
 1373 static int
 1374 hifn_writeramaddr(struct hifn_softc *sc, int addr, u_int8_t *data)
 1375 {
 1376         struct hifn_dma *dma = sc->sc_dma;
 1377         hifn_base_command_t wc;
 1378         const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ;
 1379         int r, cmdi, resi, srci, dsti;
 1380 
 1381         wc.masks = htole16(3 << 13);
 1382         wc.session_num = htole16(addr >> 14);
 1383         wc.total_source_count = htole16(8);
 1384         wc.total_dest_count = htole16(addr & 0x3fff);
 1385 
 1386         hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi);
 1387 
 1388         WRITE_REG_1(sc, HIFN_1_DMA_CSR,
 1389             HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA |
 1390             HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA);
 1391 
 1392         /* build write command */
 1393         bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND);
 1394         *(hifn_base_command_t *)dma->command_bufs[cmdi] = wc;
 1395         bcopy(data, &dma->test_src, sizeof(dma->test_src));
 1396 
 1397         dma->srcr[srci].p = htole32(sc->sc_dma_physaddr
 1398             + offsetof(struct hifn_dma, test_src));
 1399         dma->dstr[dsti].p = htole32(sc->sc_dma_physaddr
 1400             + offsetof(struct hifn_dma, test_dst));
 1401 
 1402         dma->cmdr[cmdi].l = htole32(16 | masks);
 1403         dma->srcr[srci].l = htole32(8 | masks);
 1404         dma->dstr[dsti].l = htole32(4 | masks);
 1405         dma->resr[resi].l = htole32(4 | masks);
 1406 
 1407         bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
 1408             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 1409 
 1410         for (r = 10000; r >= 0; r--) {
 1411                 DELAY(10);
 1412                 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
 1413                     BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
 1414                 if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0)
 1415                         break;
 1416                 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
 1417                     BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 1418         }
 1419         if (r == 0) {
 1420                 device_printf(sc->sc_dev, "writeramaddr -- "
 1421                     "result[%d](addr %d) still valid\n", resi, addr);
 1422                 r = -1;
 1423                 return (-1);
 1424         } else
 1425                 r = 0;
 1426 
 1427         WRITE_REG_1(sc, HIFN_1_DMA_CSR,
 1428             HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS |
 1429             HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS);
 1430 
 1431         return (r);
 1432 }
 1433 
 1434 static int
 1435 hifn_readramaddr(struct hifn_softc *sc, int addr, u_int8_t *data)
 1436 {
 1437         struct hifn_dma *dma = sc->sc_dma;
 1438         hifn_base_command_t rc;
 1439         const u_int32_t masks = HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ;
 1440         int r, cmdi, srci, dsti, resi;
 1441 
 1442         rc.masks = htole16(2 << 13);
 1443         rc.session_num = htole16(addr >> 14);
 1444         rc.total_source_count = htole16(addr & 0x3fff);
 1445         rc.total_dest_count = htole16(8);
 1446 
 1447         hifn_alloc_slot(sc, &cmdi, &srci, &dsti, &resi);
 1448 
 1449         WRITE_REG_1(sc, HIFN_1_DMA_CSR,
 1450             HIFN_DMACSR_C_CTRL_ENA | HIFN_DMACSR_S_CTRL_ENA |
 1451             HIFN_DMACSR_D_CTRL_ENA | HIFN_DMACSR_R_CTRL_ENA);
 1452 
 1453         bzero(dma->command_bufs[cmdi], HIFN_MAX_COMMAND);
 1454         *(hifn_base_command_t *)dma->command_bufs[cmdi] = rc;
 1455 
 1456         dma->srcr[srci].p = htole32(sc->sc_dma_physaddr +
 1457             offsetof(struct hifn_dma, test_src));
 1458         dma->test_src = 0;
 1459         dma->dstr[dsti].p =  htole32(sc->sc_dma_physaddr +
 1460             offsetof(struct hifn_dma, test_dst));
 1461         dma->test_dst = 0;
 1462         dma->cmdr[cmdi].l = htole32(8 | masks);
 1463         dma->srcr[srci].l = htole32(8 | masks);
 1464         dma->dstr[dsti].l = htole32(8 | masks);
 1465         dma->resr[resi].l = htole32(HIFN_MAX_RESULT | masks);
 1466 
 1467         bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
 1468             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 1469 
 1470         for (r = 10000; r >= 0; r--) {
 1471                 DELAY(10);
 1472                 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
 1473                     BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
 1474                 if ((dma->resr[resi].l & htole32(HIFN_D_VALID)) == 0)
 1475                         break;
 1476                 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
 1477                     BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 1478         }
 1479         if (r == 0) {
 1480                 device_printf(sc->sc_dev, "readramaddr -- "
 1481                     "result[%d](addr %d) still valid\n", resi, addr);
 1482                 r = -1;
 1483         } else {
 1484                 r = 0;
 1485                 bcopy(&dma->test_dst, data, sizeof(dma->test_dst));
 1486         }
 1487 
 1488         WRITE_REG_1(sc, HIFN_1_DMA_CSR,
 1489             HIFN_DMACSR_C_CTRL_DIS | HIFN_DMACSR_S_CTRL_DIS |
 1490             HIFN_DMACSR_D_CTRL_DIS | HIFN_DMACSR_R_CTRL_DIS);
 1491 
 1492         return (r);
 1493 }
 1494 
 1495 /*
 1496  * Initialize the descriptor rings.
 1497  */
 1498 static void 
 1499 hifn_init_dma(struct hifn_softc *sc)
 1500 {
 1501         struct hifn_dma *dma = sc->sc_dma;
 1502         int i;
 1503 
 1504         hifn_set_retry(sc);
 1505 
 1506         /* initialize static pointer values */
 1507         for (i = 0; i < HIFN_D_CMD_RSIZE; i++)
 1508                 dma->cmdr[i].p = htole32(sc->sc_dma_physaddr +
 1509                     offsetof(struct hifn_dma, command_bufs[i][0]));
 1510         for (i = 0; i < HIFN_D_RES_RSIZE; i++)
 1511                 dma->resr[i].p = htole32(sc->sc_dma_physaddr +
 1512                     offsetof(struct hifn_dma, result_bufs[i][0]));
 1513 
 1514         dma->cmdr[HIFN_D_CMD_RSIZE].p =
 1515             htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, cmdr[0]));
 1516         dma->srcr[HIFN_D_SRC_RSIZE].p =
 1517             htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, srcr[0]));
 1518         dma->dstr[HIFN_D_DST_RSIZE].p =
 1519             htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, dstr[0]));
 1520         dma->resr[HIFN_D_RES_RSIZE].p =
 1521             htole32(sc->sc_dma_physaddr + offsetof(struct hifn_dma, resr[0]));
 1522 
 1523         dma->cmdu = dma->srcu = dma->dstu = dma->resu = 0;
 1524         dma->cmdi = dma->srci = dma->dsti = dma->resi = 0;
 1525         dma->cmdk = dma->srck = dma->dstk = dma->resk = 0;
 1526 }
 1527 
 1528 /*
 1529  * Writes out the raw command buffer space.  Returns the
 1530  * command buffer size.
 1531  */
 1532 static u_int
 1533 hifn_write_command(struct hifn_command *cmd, u_int8_t *buf)
 1534 {
 1535         u_int8_t *buf_pos;
 1536         hifn_base_command_t *base_cmd;
 1537         hifn_mac_command_t *mac_cmd;
 1538         hifn_crypt_command_t *cry_cmd;
 1539         int using_mac, using_crypt, len, ivlen;
 1540         u_int32_t dlen, slen;
 1541 
 1542         buf_pos = buf;
 1543         using_mac = cmd->base_masks & HIFN_BASE_CMD_MAC;
 1544         using_crypt = cmd->base_masks & HIFN_BASE_CMD_CRYPT;
 1545 
 1546         base_cmd = (hifn_base_command_t *)buf_pos;
 1547         base_cmd->masks = htole16(cmd->base_masks);
 1548         slen = cmd->src_mapsize;
 1549         if (cmd->sloplen)
 1550                 dlen = cmd->dst_mapsize - cmd->sloplen + sizeof(u_int32_t);
 1551         else
 1552                 dlen = cmd->dst_mapsize;
 1553         base_cmd->total_source_count = htole16(slen & HIFN_BASE_CMD_LENMASK_LO);
 1554         base_cmd->total_dest_count = htole16(dlen & HIFN_BASE_CMD_LENMASK_LO);
 1555         dlen >>= 16;
 1556         slen >>= 16;
 1557         base_cmd->session_num = htole16(
 1558             ((slen << HIFN_BASE_CMD_SRCLEN_S) & HIFN_BASE_CMD_SRCLEN_M) |
 1559             ((dlen << HIFN_BASE_CMD_DSTLEN_S) & HIFN_BASE_CMD_DSTLEN_M));
 1560         buf_pos += sizeof(hifn_base_command_t);
 1561 
 1562         if (using_mac) {
 1563                 mac_cmd = (hifn_mac_command_t *)buf_pos;
 1564                 dlen = cmd->maccrd->crd_len;
 1565                 mac_cmd->source_count = htole16(dlen & 0xffff);
 1566                 dlen >>= 16;
 1567                 mac_cmd->masks = htole16(cmd->mac_masks |
 1568                     ((dlen << HIFN_MAC_CMD_SRCLEN_S) & HIFN_MAC_CMD_SRCLEN_M));
 1569                 mac_cmd->header_skip = htole16(cmd->maccrd->crd_skip);
 1570                 mac_cmd->reserved = 0;
 1571                 buf_pos += sizeof(hifn_mac_command_t);
 1572         }
 1573 
 1574         if (using_crypt) {
 1575                 cry_cmd = (hifn_crypt_command_t *)buf_pos;
 1576                 dlen = cmd->enccrd->crd_len;
 1577                 cry_cmd->source_count = htole16(dlen & 0xffff);
 1578                 dlen >>= 16;
 1579                 cry_cmd->masks = htole16(cmd->cry_masks |
 1580                     ((dlen << HIFN_CRYPT_CMD_SRCLEN_S) & HIFN_CRYPT_CMD_SRCLEN_M));
 1581                 cry_cmd->header_skip = htole16(cmd->enccrd->crd_skip);
 1582                 cry_cmd->reserved = 0;
 1583                 buf_pos += sizeof(hifn_crypt_command_t);
 1584         }
 1585 
 1586         if (using_mac && cmd->mac_masks & HIFN_MAC_CMD_NEW_KEY) {
 1587                 bcopy(cmd->mac, buf_pos, HIFN_MAC_KEY_LENGTH);
 1588                 buf_pos += HIFN_MAC_KEY_LENGTH;
 1589         }
 1590 
 1591         if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_KEY) {
 1592                 switch (cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) {
 1593                 case HIFN_CRYPT_CMD_ALG_3DES:
 1594                         bcopy(cmd->ck, buf_pos, HIFN_3DES_KEY_LENGTH);
 1595                         buf_pos += HIFN_3DES_KEY_LENGTH;
 1596                         break;
 1597                 case HIFN_CRYPT_CMD_ALG_DES:
 1598                         bcopy(cmd->ck, buf_pos, HIFN_DES_KEY_LENGTH);
 1599                         buf_pos += HIFN_DES_KEY_LENGTH;
 1600                         break;
 1601                 case HIFN_CRYPT_CMD_ALG_RC4:
 1602                         len = 256;
 1603                         do {
 1604                                 int clen;
 1605 
 1606                                 clen = MIN(cmd->cklen, len);
 1607                                 bcopy(cmd->ck, buf_pos, clen);
 1608                                 len -= clen;
 1609                                 buf_pos += clen;
 1610                         } while (len > 0);
 1611                         bzero(buf_pos, 4);
 1612                         buf_pos += 4;
 1613                         break;
 1614                 case HIFN_CRYPT_CMD_ALG_AES:
 1615                         /*
 1616                          * AES keys are variable 128, 192 and
 1617                          * 256 bits (16, 24 and 32 bytes).
 1618                          */
 1619                         bcopy(cmd->ck, buf_pos, cmd->cklen);
 1620                         buf_pos += cmd->cklen;
 1621                         break;
 1622                 }
 1623         }
 1624 
 1625         if (using_crypt && cmd->cry_masks & HIFN_CRYPT_CMD_NEW_IV) {
 1626                 switch (cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) {
 1627                 case HIFN_CRYPT_CMD_ALG_AES:
 1628                         ivlen = HIFN_AES_IV_LENGTH;
 1629                         break;
 1630                 default:
 1631                         ivlen = HIFN_IV_LENGTH;
 1632                         break;
 1633                 }
 1634                 bcopy(cmd->iv, buf_pos, ivlen);
 1635                 buf_pos += ivlen;
 1636         }
 1637 
 1638         if ((cmd->base_masks & (HIFN_BASE_CMD_MAC|HIFN_BASE_CMD_CRYPT)) == 0) {
 1639                 bzero(buf_pos, 8);
 1640                 buf_pos += 8;
 1641         }
 1642 
 1643         return (buf_pos - buf);
 1644 }
 1645 
 1646 static int
 1647 hifn_dmamap_aligned(struct hifn_operand *op)
 1648 {
 1649         int i;
 1650 
 1651         for (i = 0; i < op->nsegs; i++) {
 1652                 if (op->segs[i].ds_addr & 3)
 1653                         return (0);
 1654                 if ((i != (op->nsegs - 1)) && (op->segs[i].ds_len & 3))
 1655                         return (0);
 1656         }
 1657         return (1);
 1658 }
 1659 
 1660 static int
 1661 hifn_dmamap_load_dst(struct hifn_softc *sc, struct hifn_command *cmd)
 1662 {
 1663         struct hifn_dma *dma = sc->sc_dma;
 1664         struct hifn_operand *dst = &cmd->dst;
 1665         u_int32_t p, l;
 1666         int idx, used = 0, i;
 1667 
 1668         idx = dma->dsti;
 1669         for (i = 0; i < dst->nsegs - 1; i++) {
 1670                 dma->dstr[idx].p = htole32(dst->segs[i].ds_addr);
 1671                 dma->dstr[idx].l = htole32(HIFN_D_VALID |
 1672                     HIFN_D_MASKDONEIRQ | dst->segs[i].ds_len);
 1673                 HIFN_DSTR_SYNC(sc, idx,
 1674                     BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 1675                 used++;
 1676 
 1677                 if (++idx == HIFN_D_DST_RSIZE) {
 1678                         dma->dstr[idx].l = htole32(HIFN_D_VALID |
 1679                             HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
 1680                         HIFN_DSTR_SYNC(sc, idx,
 1681                             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 1682                         idx = 0;
 1683                 }
 1684         }
 1685 
 1686         if (cmd->sloplen == 0) {
 1687                 p = dst->segs[i].ds_addr;
 1688                 l = HIFN_D_VALID | HIFN_D_MASKDONEIRQ | HIFN_D_LAST |
 1689                     dst->segs[i].ds_len;
 1690         } else {
 1691                 p = sc->sc_dma_physaddr +
 1692                     offsetof(struct hifn_dma, slop[cmd->slopidx]);
 1693                 l = HIFN_D_VALID | HIFN_D_MASKDONEIRQ | HIFN_D_LAST |
 1694                     sizeof(u_int32_t);
 1695 
 1696                 if ((dst->segs[i].ds_len - cmd->sloplen) != 0) {
 1697                         dma->dstr[idx].p = htole32(dst->segs[i].ds_addr);
 1698                         dma->dstr[idx].l = htole32(HIFN_D_VALID |
 1699                             HIFN_D_MASKDONEIRQ |
 1700                             (dst->segs[i].ds_len - cmd->sloplen));
 1701                         HIFN_DSTR_SYNC(sc, idx,
 1702                             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 1703                         used++;
 1704 
 1705                         if (++idx == HIFN_D_DST_RSIZE) {
 1706                                 dma->dstr[idx].l = htole32(HIFN_D_VALID |
 1707                                     HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
 1708                                 HIFN_DSTR_SYNC(sc, idx,
 1709                                     BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 1710                                 idx = 0;
 1711                         }
 1712                 }
 1713         }
 1714         dma->dstr[idx].p = htole32(p);
 1715         dma->dstr[idx].l = htole32(l);
 1716         HIFN_DSTR_SYNC(sc, idx, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 1717         used++;
 1718 
 1719         if (++idx == HIFN_D_DST_RSIZE) {
 1720                 dma->dstr[idx].l = htole32(HIFN_D_VALID | HIFN_D_JUMP |
 1721                     HIFN_D_MASKDONEIRQ);
 1722                 HIFN_DSTR_SYNC(sc, idx,
 1723                     BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 1724                 idx = 0;
 1725         }
 1726 
 1727         dma->dsti = idx;
 1728         dma->dstu += used;
 1729         return (idx);
 1730 }
 1731 
 1732 static int
 1733 hifn_dmamap_load_src(struct hifn_softc *sc, struct hifn_command *cmd)
 1734 {
 1735         struct hifn_dma *dma = sc->sc_dma;
 1736         struct hifn_operand *src = &cmd->src;
 1737         int idx, i;
 1738         u_int32_t last = 0;
 1739 
 1740         idx = dma->srci;
 1741         for (i = 0; i < src->nsegs; i++) {
 1742                 if (i == src->nsegs - 1)
 1743                         last = HIFN_D_LAST;
 1744 
 1745                 dma->srcr[idx].p = htole32(src->segs[i].ds_addr);
 1746                 dma->srcr[idx].l = htole32(src->segs[i].ds_len |
 1747                     HIFN_D_VALID | HIFN_D_MASKDONEIRQ | last);
 1748                 HIFN_SRCR_SYNC(sc, idx,
 1749                     BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
 1750 
 1751                 if (++idx == HIFN_D_SRC_RSIZE) {
 1752                         dma->srcr[idx].l = htole32(HIFN_D_VALID |
 1753                             HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
 1754                         HIFN_SRCR_SYNC(sc, HIFN_D_SRC_RSIZE,
 1755                             BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
 1756                         idx = 0;
 1757                 }
 1758         }
 1759         dma->srci = idx;
 1760         dma->srcu += src->nsegs;
 1761         return (idx);
 1762 } 
 1763 
 1764 static void
 1765 hifn_op_cb(struct hifn_operand *op, bus_dma_segment_t *seg, int nsegs,
 1766     int error)
 1767 {
 1768 
 1769         KASSERT(nsegs <= MAX_SCATTER,
 1770                 ("hifn_op_cb: too many DMA segments (%u > %u) "
 1771                  "returned when mapping operand", nsegs, MAX_SCATTER));
 1772         op->nsegs = nsegs;
 1773         bcopy(seg, op->segs, nsegs * sizeof (seg[0]));
 1774 }
 1775 
 1776 static void
 1777 hifn_op_cb1(void *arg, bus_dma_segment_t *seg, int nsegs, int error)
 1778 {
 1779 
 1780         hifn_op_cb(arg, seg, nsegs, error);
 1781 }
 1782 
 1783 static void
 1784 hifn_op_cb2(void *arg, bus_dma_segment_t *seg, int nsegs,
 1785     bus_size_t mapsize, int error)
 1786 {
 1787 
 1788         hifn_op_cb(arg, seg, nsegs, error);
 1789 }
 1790 
 1791 static int 
 1792 hifn_crypto(
 1793         struct hifn_softc *sc,
 1794         struct hifn_command *cmd,
 1795         struct cryptop *crp,
 1796         int hint)
 1797 {
 1798         struct  hifn_dma *dma = sc->sc_dma;
 1799         u_int32_t cmdlen;
 1800         int cmdi, resi, err = 0;
 1801 
 1802         /*
 1803          * need 1 cmd, and 1 res
 1804          *
 1805          * NB: check this first since it's easy.
 1806          */
 1807         HIFN_LOCK(sc);
 1808         if ((dma->cmdu + 1) > HIFN_D_CMD_RSIZE ||
 1809             (dma->resu + 1) > HIFN_D_RES_RSIZE) {
 1810 #ifdef HIFN_DEBUG
 1811                 if (hifn_debug) {
 1812                         device_printf(sc->sc_dev,
 1813                                 "cmd/result exhaustion, cmdu %u resu %u\n",
 1814                                 dma->cmdu, dma->resu);
 1815                 }
 1816 #endif
 1817                 hifnstats.hst_nomem_cr++;
 1818                 HIFN_UNLOCK(sc);
 1819                 return (ERESTART);
 1820         }
 1821 
 1822         if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &cmd->src_map)) {
 1823                 hifnstats.hst_nomem_map++;
 1824                 HIFN_UNLOCK(sc);
 1825                 return (ENOMEM);
 1826         }
 1827 
 1828         cmd->src_mapsize = cmd->dst_mapsize = crp->crp_ilen;
 1829 
 1830         if (crp->crp_flags & CRYPTO_F_IMBUF) {
 1831                 err = bus_dmamap_load_mbuf(sc->sc_dmat, cmd->src_map,
 1832                     cmd->src_m, hifn_op_cb2, &cmd->src, BUS_DMA_NOWAIT);
 1833         } else if (crp->crp_flags & CRYPTO_F_IOV) {
 1834                 err = bus_dmamap_load_uio(sc->sc_dmat, cmd->src_map,
 1835                     cmd->src_io, hifn_op_cb2, &cmd->src, BUS_DMA_NOWAIT);
 1836         } else {
 1837                 err = bus_dmamap_load(sc->sc_dmat, cmd->src_map, cmd->src_buf,
 1838                     crp->crp_ilen, hifn_op_cb1, &cmd->src, BUS_DMA_NOWAIT);
 1839         }
 1840         if (err != 0) {
 1841                 hifnstats.hst_nomem_load++;
 1842                 err = ENOMEM;
 1843                 goto err_srcmap1;
 1844         }
 1845 
 1846         if (hifn_dmamap_aligned(&cmd->src)) {
 1847                 cmd->sloplen = cmd->src_mapsize & 3;
 1848                 cmd->dst = cmd->src;
 1849         } else {
 1850                 if (crp->crp_flags & CRYPTO_F_IOV) {
 1851                         err = EINVAL;
 1852                         goto err_srcmap;
 1853                 } else if (crp->crp_flags & CRYPTO_F_IMBUF) {
 1854                         int totlen, len;
 1855                         struct mbuf *m, *m0, *mlast;
 1856 
 1857                         KASSERT(cmd->dst_m == cmd->src_m,
 1858                                 ("hifn_crypto: dst_m initialized improperly"));
 1859                         hifnstats.hst_unaligned++;
 1860                         /*
 1861                          * Source is not aligned on a longword boundary.
 1862                          * Copy the data to insure alignment.  If we fail
 1863                          * to allocate mbufs or clusters while doing this
 1864                          * we return ERESTART so the operation is requeued
 1865                          * at the crypto later, but only if there are
 1866                          * ops already posted to the hardware; otherwise we
 1867                          * have no guarantee that we'll be re-entered.
 1868                          */
 1869                         totlen = cmd->src_mapsize;
 1870                         if (cmd->src_m->m_flags & M_PKTHDR) {
 1871                                 len = MHLEN;
 1872                                 MGETHDR(m0, M_DONTWAIT, MT_DATA);
 1873                                 if (m0 && !m_dup_pkthdr(m0, cmd->src_m, M_DONTWAIT)) {
 1874                                         m_free(m0);
 1875                                         m0 = NULL;
 1876                                 }
 1877                         } else {
 1878                                 len = MLEN;
 1879                                 MGET(m0, M_DONTWAIT, MT_DATA);
 1880                         }
 1881                         if (m0 == NULL) {
 1882                                 hifnstats.hst_nomem_mbuf++;
 1883                                 err = dma->cmdu ? ERESTART : ENOMEM;
 1884                                 goto err_srcmap;
 1885                         }
 1886                         if (totlen >= MINCLSIZE) {
 1887                                 MCLGET(m0, M_DONTWAIT);
 1888                                 if ((m0->m_flags & M_EXT) == 0) {
 1889                                         hifnstats.hst_nomem_mcl++;
 1890                                         err = dma->cmdu ? ERESTART : ENOMEM;
 1891                                         m_freem(m0);
 1892                                         goto err_srcmap;
 1893                                 }
 1894                                 len = MCLBYTES;
 1895                         }
 1896                         totlen -= len;
 1897                         m0->m_pkthdr.len = m0->m_len = len;
 1898                         mlast = m0;
 1899 
 1900                         while (totlen > 0) {
 1901                                 MGET(m, M_DONTWAIT, MT_DATA);
 1902                                 if (m == NULL) {
 1903                                         hifnstats.hst_nomem_mbuf++;
 1904                                         err = dma->cmdu ? ERESTART : ENOMEM;
 1905                                         m_freem(m0);
 1906                                         goto err_srcmap;
 1907                                 }
 1908                                 len = MLEN;
 1909                                 if (totlen >= MINCLSIZE) {
 1910                                         MCLGET(m, M_DONTWAIT);
 1911                                         if ((m->m_flags & M_EXT) == 0) {
 1912                                                 hifnstats.hst_nomem_mcl++;
 1913                                                 err = dma->cmdu ? ERESTART : ENOMEM;
 1914                                                 mlast->m_next = m;
 1915                                                 m_freem(m0);
 1916                                                 goto err_srcmap;
 1917                                         }
 1918                                         len = MCLBYTES;
 1919                                 }
 1920 
 1921                                 m->m_len = len;
 1922                                 m0->m_pkthdr.len += len;
 1923                                 totlen -= len;
 1924 
 1925                                 mlast->m_next = m;
 1926                                 mlast = m;
 1927                         }
 1928                         cmd->dst_m = m0;
 1929                 } else {
 1930                         err = EINVAL;
 1931                         goto err_srcmap;
 1932                 }
 1933         }
 1934 
 1935         if (cmd->dst_map == NULL) {
 1936                 if (bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT, &cmd->dst_map)) {
 1937                         hifnstats.hst_nomem_map++;
 1938                         err = ENOMEM;
 1939                         goto err_srcmap;
 1940                 }
 1941                 if (crp->crp_flags & CRYPTO_F_IMBUF) {
 1942                         err = bus_dmamap_load_mbuf(sc->sc_dmat, cmd->dst_map,
 1943                             cmd->dst_m, hifn_op_cb2, &cmd->dst, BUS_DMA_NOWAIT);
 1944                 } else if (crp->crp_flags & CRYPTO_F_IOV) {
 1945                         err = bus_dmamap_load_uio(sc->sc_dmat, cmd->dst_map,
 1946                             cmd->dst_io, hifn_op_cb2, &cmd->dst,
 1947                             BUS_DMA_NOWAIT);
 1948                 } else {
 1949                         err = bus_dmamap_load(sc->sc_dmat, cmd->dst_map,
 1950                             cmd->dst_buf, crp->crp_ilen, hifn_op_cb1, &cmd->dst,
 1951                             BUS_DMA_NOWAIT);
 1952                 }
 1953                 if (err != 0) {
 1954                         hifnstats.hst_nomem_map++;
 1955                         err = ENOMEM;
 1956                         goto err_dstmap1;
 1957                 }
 1958         }
 1959 
 1960 #ifdef HIFN_DEBUG
 1961         if (hifn_debug) {
 1962                 device_printf(sc->sc_dev,
 1963                     "Entering cmd: stat %8x ien %8x u %d/%d/%d/%d n %d/%d\n",
 1964                     READ_REG_1(sc, HIFN_1_DMA_CSR),
 1965                     READ_REG_1(sc, HIFN_1_DMA_IER),
 1966                     dma->cmdu, dma->srcu, dma->dstu, dma->resu,
 1967                     cmd->src_nsegs, cmd->dst_nsegs);
 1968         }
 1969 #endif
 1970 
 1971         if (cmd->src_map == cmd->dst_map) {
 1972                 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
 1973                     BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD);
 1974         } else {
 1975                 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
 1976                     BUS_DMASYNC_PREWRITE);
 1977                 bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
 1978                     BUS_DMASYNC_PREREAD);
 1979         }
 1980 
 1981         /*
 1982          * need N src, and N dst
 1983          */
 1984         if ((dma->srcu + cmd->src_nsegs) > HIFN_D_SRC_RSIZE ||
 1985             (dma->dstu + cmd->dst_nsegs + 1) > HIFN_D_DST_RSIZE) {
 1986 #ifdef HIFN_DEBUG
 1987                 if (hifn_debug) {
 1988                         device_printf(sc->sc_dev,
 1989                                 "src/dst exhaustion, srcu %u+%u dstu %u+%u\n",
 1990                                 dma->srcu, cmd->src_nsegs,
 1991                                 dma->dstu, cmd->dst_nsegs);
 1992                 }
 1993 #endif
 1994                 hifnstats.hst_nomem_sd++;
 1995                 err = ERESTART;
 1996                 goto err_dstmap;
 1997         }
 1998 
 1999         if (dma->cmdi == HIFN_D_CMD_RSIZE) {
 2000                 dma->cmdi = 0;
 2001                 dma->cmdr[HIFN_D_CMD_RSIZE].l = htole32(HIFN_D_VALID |
 2002                     HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
 2003                 HIFN_CMDR_SYNC(sc, HIFN_D_CMD_RSIZE,
 2004                     BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
 2005         }
 2006         cmdi = dma->cmdi++;
 2007         cmdlen = hifn_write_command(cmd, dma->command_bufs[cmdi]);
 2008         HIFN_CMD_SYNC(sc, cmdi, BUS_DMASYNC_PREWRITE);
 2009 
 2010         /* .p for command/result already set */
 2011         dma->cmdr[cmdi].l = htole32(cmdlen | HIFN_D_VALID | HIFN_D_LAST |
 2012             HIFN_D_MASKDONEIRQ);
 2013         HIFN_CMDR_SYNC(sc, cmdi,
 2014             BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
 2015         dma->cmdu++;
 2016         if (sc->sc_c_busy == 0) {
 2017                 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_C_CTRL_ENA);
 2018                 sc->sc_c_busy = 1;
 2019         }
 2020 
 2021         /*
 2022          * We don't worry about missing an interrupt (which a "command wait"
 2023          * interrupt salvages us from), unless there is more than one command
 2024          * in the queue.
 2025          */
 2026         if (dma->cmdu > 1) {
 2027                 sc->sc_dmaier |= HIFN_DMAIER_C_WAIT;
 2028                 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
 2029         }
 2030 
 2031         hifnstats.hst_ipackets++;
 2032         hifnstats.hst_ibytes += cmd->src_mapsize;
 2033 
 2034         hifn_dmamap_load_src(sc, cmd);
 2035         if (sc->sc_s_busy == 0) {
 2036                 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_S_CTRL_ENA);
 2037                 sc->sc_s_busy = 1;
 2038         }
 2039 
 2040         /*
 2041          * Unlike other descriptors, we don't mask done interrupt from
 2042          * result descriptor.
 2043          */
 2044 #ifdef HIFN_DEBUG
 2045         if (hifn_debug)
 2046                 printf("load res\n");
 2047 #endif
 2048         if (dma->resi == HIFN_D_RES_RSIZE) {
 2049                 dma->resi = 0;
 2050                 dma->resr[HIFN_D_RES_RSIZE].l = htole32(HIFN_D_VALID |
 2051                     HIFN_D_JUMP | HIFN_D_MASKDONEIRQ);
 2052                 HIFN_RESR_SYNC(sc, HIFN_D_RES_RSIZE,
 2053                     BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 2054         }
 2055         resi = dma->resi++;
 2056         KASSERT(dma->hifn_commands[resi] == NULL,
 2057                 ("hifn_crypto: command slot %u busy", resi));
 2058         dma->hifn_commands[resi] = cmd;
 2059         HIFN_RES_SYNC(sc, resi, BUS_DMASYNC_PREREAD);
 2060         if ((hint & CRYPTO_HINT_MORE) && sc->sc_curbatch < hifn_maxbatch) {
 2061                 dma->resr[resi].l = htole32(HIFN_MAX_RESULT |
 2062                     HIFN_D_VALID | HIFN_D_LAST | HIFN_D_MASKDONEIRQ);
 2063                 sc->sc_curbatch++;
 2064                 if (sc->sc_curbatch > hifnstats.hst_maxbatch)
 2065                         hifnstats.hst_maxbatch = sc->sc_curbatch;
 2066                 hifnstats.hst_totbatch++;
 2067         } else {
 2068                 dma->resr[resi].l = htole32(HIFN_MAX_RESULT |
 2069                     HIFN_D_VALID | HIFN_D_LAST);
 2070                 sc->sc_curbatch = 0;
 2071         }
 2072         HIFN_RESR_SYNC(sc, resi,
 2073             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 2074         dma->resu++;
 2075         if (sc->sc_r_busy == 0) {
 2076                 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_R_CTRL_ENA);
 2077                 sc->sc_r_busy = 1;
 2078         }
 2079 
 2080         if (cmd->sloplen)
 2081                 cmd->slopidx = resi;
 2082 
 2083         hifn_dmamap_load_dst(sc, cmd);
 2084 
 2085         if (sc->sc_d_busy == 0) {
 2086                 WRITE_REG_1(sc, HIFN_1_DMA_CSR, HIFN_DMACSR_D_CTRL_ENA);
 2087                 sc->sc_d_busy = 1;
 2088         }
 2089 
 2090 #ifdef HIFN_DEBUG
 2091         if (hifn_debug) {
 2092                 device_printf(sc->sc_dev, "command: stat %8x ier %8x\n",
 2093                     READ_REG_1(sc, HIFN_1_DMA_CSR),
 2094                     READ_REG_1(sc, HIFN_1_DMA_IER));
 2095         }
 2096 #endif
 2097 
 2098         sc->sc_active = 5;
 2099         HIFN_UNLOCK(sc);
 2100         KASSERT(err == 0, ("hifn_crypto: success with error %u", err));
 2101         return (err);           /* success */
 2102 
 2103 err_dstmap:
 2104         if (cmd->src_map != cmd->dst_map)
 2105                 bus_dmamap_unload(sc->sc_dmat, cmd->dst_map);
 2106 err_dstmap1:
 2107         if (cmd->src_map != cmd->dst_map)
 2108                 bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map);
 2109 err_srcmap:
 2110         if (crp->crp_flags & CRYPTO_F_IMBUF) {
 2111                 if (cmd->src_m != cmd->dst_m)
 2112                         m_freem(cmd->dst_m);
 2113         }
 2114         bus_dmamap_unload(sc->sc_dmat, cmd->src_map);
 2115 err_srcmap1:
 2116         bus_dmamap_destroy(sc->sc_dmat, cmd->src_map);
 2117         HIFN_UNLOCK(sc);
 2118         return (err);
 2119 }
 2120 
 2121 static void
 2122 hifn_tick(void* vsc)
 2123 {
 2124         struct hifn_softc *sc = vsc;
 2125 
 2126         HIFN_LOCK(sc);
 2127         if (sc->sc_active == 0) {
 2128                 struct hifn_dma *dma = sc->sc_dma;
 2129                 u_int32_t r = 0;
 2130 
 2131                 if (dma->cmdu == 0 && sc->sc_c_busy) {
 2132                         sc->sc_c_busy = 0;
 2133                         r |= HIFN_DMACSR_C_CTRL_DIS;
 2134                 }
 2135                 if (dma->srcu == 0 && sc->sc_s_busy) {
 2136                         sc->sc_s_busy = 0;
 2137                         r |= HIFN_DMACSR_S_CTRL_DIS;
 2138                 }
 2139                 if (dma->dstu == 0 && sc->sc_d_busy) {
 2140                         sc->sc_d_busy = 0;
 2141                         r |= HIFN_DMACSR_D_CTRL_DIS;
 2142                 }
 2143                 if (dma->resu == 0 && sc->sc_r_busy) {
 2144                         sc->sc_r_busy = 0;
 2145                         r |= HIFN_DMACSR_R_CTRL_DIS;
 2146                 }
 2147                 if (r)
 2148                         WRITE_REG_1(sc, HIFN_1_DMA_CSR, r);
 2149         } else
 2150                 sc->sc_active--;
 2151         HIFN_UNLOCK(sc);
 2152         callout_reset(&sc->sc_tickto, hz, hifn_tick, sc);
 2153 }
 2154 
 2155 static void 
 2156 hifn_intr(void *arg)
 2157 {
 2158         struct hifn_softc *sc = arg;
 2159         struct hifn_dma *dma;
 2160         u_int32_t dmacsr, restart;
 2161         int i, u;
 2162 
 2163         dmacsr = READ_REG_1(sc, HIFN_1_DMA_CSR);
 2164 
 2165         /* Nothing in the DMA unit interrupted */
 2166         if ((dmacsr & sc->sc_dmaier) == 0)
 2167                 return;
 2168 
 2169         HIFN_LOCK(sc);
 2170 
 2171         dma = sc->sc_dma;
 2172 
 2173 #ifdef HIFN_DEBUG
 2174         if (hifn_debug) {
 2175                 device_printf(sc->sc_dev,
 2176                     "irq: stat %08x ien %08x damier %08x i %d/%d/%d/%d k %d/%d/%d/%d u %d/%d/%d/%d\n",
 2177                     dmacsr, READ_REG_1(sc, HIFN_1_DMA_IER), sc->sc_dmaier,
 2178                     dma->cmdi, dma->srci, dma->dsti, dma->resi,
 2179                     dma->cmdk, dma->srck, dma->dstk, dma->resk,
 2180                     dma->cmdu, dma->srcu, dma->dstu, dma->resu);
 2181         }
 2182 #endif
 2183 
 2184         WRITE_REG_1(sc, HIFN_1_DMA_CSR, dmacsr & sc->sc_dmaier);
 2185 
 2186         if ((sc->sc_flags & HIFN_HAS_PUBLIC) &&
 2187             (dmacsr & HIFN_DMACSR_PUBDONE))
 2188                 WRITE_REG_1(sc, HIFN_1_PUB_STATUS,
 2189                     READ_REG_1(sc, HIFN_1_PUB_STATUS) | HIFN_PUBSTS_DONE);
 2190 
 2191         restart = dmacsr & (HIFN_DMACSR_D_OVER | HIFN_DMACSR_R_OVER);
 2192         if (restart)
 2193                 device_printf(sc->sc_dev, "overrun %x\n", dmacsr);
 2194 
 2195         if (sc->sc_flags & HIFN_IS_7811) {
 2196                 if (dmacsr & HIFN_DMACSR_ILLR)
 2197                         device_printf(sc->sc_dev, "illegal read\n");
 2198                 if (dmacsr & HIFN_DMACSR_ILLW)
 2199                         device_printf(sc->sc_dev, "illegal write\n");
 2200         }
 2201 
 2202         restart = dmacsr & (HIFN_DMACSR_C_ABORT | HIFN_DMACSR_S_ABORT |
 2203             HIFN_DMACSR_D_ABORT | HIFN_DMACSR_R_ABORT);
 2204         if (restart) {
 2205                 device_printf(sc->sc_dev, "abort, resetting.\n");
 2206                 hifnstats.hst_abort++;
 2207                 hifn_abort(sc);
 2208                 HIFN_UNLOCK(sc);
 2209                 return;
 2210         }
 2211 
 2212         if ((dmacsr & HIFN_DMACSR_C_WAIT) && (dma->cmdu == 0)) {
 2213                 /*
 2214                  * If no slots to process and we receive a "waiting on
 2215                  * command" interrupt, we disable the "waiting on command"
 2216                  * (by clearing it).
 2217                  */
 2218                 sc->sc_dmaier &= ~HIFN_DMAIER_C_WAIT;
 2219                 WRITE_REG_1(sc, HIFN_1_DMA_IER, sc->sc_dmaier);
 2220         }
 2221 
 2222         /* clear the rings */
 2223         i = dma->resk; u = dma->resu;
 2224         while (u != 0) {
 2225                 HIFN_RESR_SYNC(sc, i,
 2226                     BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
 2227                 if (dma->resr[i].l & htole32(HIFN_D_VALID)) {
 2228                         HIFN_RESR_SYNC(sc, i,
 2229                             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 2230                         break;
 2231                 }
 2232 
 2233                 if (i != HIFN_D_RES_RSIZE) {
 2234                         struct hifn_command *cmd;
 2235                         u_int8_t *macbuf = NULL;
 2236 
 2237                         HIFN_RES_SYNC(sc, i, BUS_DMASYNC_POSTREAD);
 2238                         cmd = dma->hifn_commands[i];
 2239                         KASSERT(cmd != NULL,
 2240                                 ("hifn_intr: null command slot %u", i));
 2241                         dma->hifn_commands[i] = NULL;
 2242 
 2243                         if (cmd->base_masks & HIFN_BASE_CMD_MAC) {
 2244                                 macbuf = dma->result_bufs[i];
 2245                                 macbuf += 12;
 2246                         }
 2247 
 2248                         hifn_callback(sc, cmd, macbuf);
 2249                         hifnstats.hst_opackets++;
 2250                         u--;
 2251                 }
 2252 
 2253                 if (++i == (HIFN_D_RES_RSIZE + 1))
 2254                         i = 0;
 2255         }
 2256         dma->resk = i; dma->resu = u;
 2257 
 2258         i = dma->srck; u = dma->srcu;
 2259         while (u != 0) {
 2260                 if (i == HIFN_D_SRC_RSIZE)
 2261                         i = 0;
 2262                 HIFN_SRCR_SYNC(sc, i,
 2263                     BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
 2264                 if (dma->srcr[i].l & htole32(HIFN_D_VALID)) {
 2265                         HIFN_SRCR_SYNC(sc, i,
 2266                             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 2267                         break;
 2268                 }
 2269                 i++, u--;
 2270         }
 2271         dma->srck = i; dma->srcu = u;
 2272 
 2273         i = dma->cmdk; u = dma->cmdu;
 2274         while (u != 0) {
 2275                 HIFN_CMDR_SYNC(sc, i,
 2276                     BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
 2277                 if (dma->cmdr[i].l & htole32(HIFN_D_VALID)) {
 2278                         HIFN_CMDR_SYNC(sc, i,
 2279                             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 2280                         break;
 2281                 }
 2282                 if (i != HIFN_D_CMD_RSIZE) {
 2283                         u--;
 2284                         HIFN_CMD_SYNC(sc, i, BUS_DMASYNC_POSTWRITE);
 2285                 }
 2286                 if (++i == (HIFN_D_CMD_RSIZE + 1))
 2287                         i = 0;
 2288         }
 2289         dma->cmdk = i; dma->cmdu = u;
 2290 
 2291         HIFN_UNLOCK(sc);
 2292 
 2293         if (sc->sc_needwakeup) {                /* XXX check high watermark */
 2294                 int wakeup = sc->sc_needwakeup & (CRYPTO_SYMQ|CRYPTO_ASYMQ);
 2295 #ifdef HIFN_DEBUG
 2296                 if (hifn_debug)
 2297                         device_printf(sc->sc_dev,
 2298                                 "wakeup crypto (%x) u %d/%d/%d/%d\n",
 2299                                 sc->sc_needwakeup,
 2300                                 dma->cmdu, dma->srcu, dma->dstu, dma->resu);
 2301 #endif
 2302                 sc->sc_needwakeup &= ~wakeup;
 2303                 crypto_unblock(sc->sc_cid, wakeup);
 2304         }
 2305 }
 2306 
 2307 /*
 2308  * Allocate a new 'session' and return an encoded session id.  'sidp'
 2309  * contains our registration id, and should contain an encoded session
 2310  * id on successful allocation.
 2311  */
 2312 static int
 2313 hifn_newsession(void *arg, u_int32_t *sidp, struct cryptoini *cri)
 2314 {
 2315         struct cryptoini *c;
 2316         struct hifn_softc *sc = arg;
 2317         int mac = 0, cry = 0, sesn;
 2318         struct hifn_session *ses = NULL;
 2319 
 2320         KASSERT(sc != NULL, ("hifn_newsession: null softc"));
 2321         if (sidp == NULL || cri == NULL || sc == NULL)
 2322                 return (EINVAL);
 2323 
 2324         if (sc->sc_sessions == NULL) {
 2325                 ses = sc->sc_sessions = (struct hifn_session *)malloc(
 2326                     sizeof(*ses), M_DEVBUF, M_NOWAIT);
 2327                 if (ses == NULL)
 2328                         return (ENOMEM);
 2329                 sesn = 0;
 2330                 sc->sc_nsessions = 1;
 2331         } else {
 2332                 for (sesn = 0; sesn < sc->sc_nsessions; sesn++) {
 2333                         if (!sc->sc_sessions[sesn].hs_used) {
 2334                                 ses = &sc->sc_sessions[sesn];
 2335                                 break;
 2336                         }
 2337                 }
 2338 
 2339                 if (ses == NULL) {
 2340                         sesn = sc->sc_nsessions;
 2341                         ses = (struct hifn_session *)malloc((sesn + 1) *
 2342                             sizeof(*ses), M_DEVBUF, M_NOWAIT);
 2343                         if (ses == NULL)
 2344                                 return (ENOMEM);
 2345                         bcopy(sc->sc_sessions, ses, sesn * sizeof(*ses));
 2346                         bzero(sc->sc_sessions, sesn * sizeof(*ses));
 2347                         free(sc->sc_sessions, M_DEVBUF);
 2348                         sc->sc_sessions = ses;
 2349                         ses = &sc->sc_sessions[sesn];
 2350                         sc->sc_nsessions++;
 2351                 }
 2352         }
 2353         bzero(ses, sizeof(*ses));
 2354         ses->hs_used = 1;
 2355 
 2356         for (c = cri; c != NULL; c = c->cri_next) {
 2357                 switch (c->cri_alg) {
 2358                 case CRYPTO_MD5:
 2359                 case CRYPTO_SHA1:
 2360                 case CRYPTO_MD5_HMAC:
 2361                 case CRYPTO_SHA1_HMAC:
 2362                         if (mac)
 2363                                 return (EINVAL);
 2364                         mac = 1;
 2365                         ses->hs_mlen = c->cri_mlen;
 2366                         if (ses->hs_mlen == 0) {
 2367                                 switch (c->cri_alg) {
 2368                                 case CRYPTO_MD5:
 2369                                 case CRYPTO_MD5_HMAC:
 2370                                         ses->hs_mlen = 16;
 2371                                         break;
 2372                                 case CRYPTO_SHA1:
 2373                                 case CRYPTO_SHA1_HMAC:
 2374                                         ses->hs_mlen = 20;
 2375                                         break;
 2376                                 }
 2377                         }
 2378                         break;
 2379                 case CRYPTO_DES_CBC:
 2380                 case CRYPTO_3DES_CBC:
 2381                 case CRYPTO_AES_CBC:
 2382                         /* XXX this may read fewer, does it matter? */
 2383                         read_random(ses->hs_iv,
 2384                                 c->cri_alg == CRYPTO_AES_CBC ?
 2385                                         HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH);
 2386                         /*FALLTHROUGH*/
 2387                 case CRYPTO_ARC4:
 2388                         if (cry)
 2389                                 return (EINVAL);
 2390                         cry = 1;
 2391                         break;
 2392                 default:
 2393                         return (EINVAL);
 2394                 }
 2395         }
 2396         if (mac == 0 && cry == 0)
 2397                 return (EINVAL);
 2398 
 2399         *sidp = HIFN_SID(device_get_unit(sc->sc_dev), sesn);
 2400 
 2401         return (0);
 2402 }
 2403 
 2404 /*
 2405  * Deallocate a session.
 2406  * XXX this routine should run a zero'd mac/encrypt key into context ram.
 2407  * XXX to blow away any keys already stored there.
 2408  */
 2409 static int
 2410 hifn_freesession(void *arg, u_int64_t tid)
 2411 {
 2412         struct hifn_softc *sc = arg;
 2413         int session;
 2414         u_int32_t sid = CRYPTO_SESID2LID(tid);
 2415 
 2416         KASSERT(sc != NULL, ("hifn_freesession: null softc"));
 2417         if (sc == NULL)
 2418                 return (EINVAL);
 2419 
 2420         session = HIFN_SESSION(sid);
 2421         if (session >= sc->sc_nsessions)
 2422                 return (EINVAL);
 2423 
 2424         bzero(&sc->sc_sessions[session], sizeof(sc->sc_sessions[session]));
 2425         return (0);
 2426 }
 2427 
 2428 static int
 2429 hifn_process(void *arg, struct cryptop *crp, int hint)
 2430 {
 2431         struct hifn_softc *sc = arg;
 2432         struct hifn_command *cmd = NULL;
 2433         int session, err, ivlen;
 2434         struct cryptodesc *crd1, *crd2, *maccrd, *enccrd;
 2435 
 2436         if (crp == NULL || crp->crp_callback == NULL) {
 2437                 hifnstats.hst_invalid++;
 2438                 return (EINVAL);
 2439         }
 2440         session = HIFN_SESSION(crp->crp_sid);
 2441 
 2442         if (sc == NULL || session >= sc->sc_nsessions) {
 2443                 err = EINVAL;
 2444                 goto errout;
 2445         }
 2446 
 2447         cmd = malloc(sizeof(struct hifn_command), M_DEVBUF, M_NOWAIT | M_ZERO);
 2448         if (cmd == NULL) {
 2449                 hifnstats.hst_nomem++;
 2450                 err = ENOMEM;
 2451                 goto errout;
 2452         }
 2453 
 2454         if (crp->crp_flags & CRYPTO_F_IMBUF) {
 2455                 cmd->src_m = (struct mbuf *)crp->crp_buf;
 2456                 cmd->dst_m = (struct mbuf *)crp->crp_buf;
 2457         } else if (crp->crp_flags & CRYPTO_F_IOV) {
 2458                 cmd->src_io = (struct uio *)crp->crp_buf;
 2459                 cmd->dst_io = (struct uio *)crp->crp_buf;
 2460         } else {
 2461                 cmd->src_buf = (void *)crp->crp_buf;
 2462                 cmd->dst_buf = (void *)crp->crp_buf;
 2463         }
 2464 
 2465         crd1 = crp->crp_desc;
 2466         if (crd1 == NULL) {
 2467                 err = EINVAL;
 2468                 goto errout;
 2469         }
 2470         crd2 = crd1->crd_next;
 2471 
 2472         if (crd2 == NULL) {
 2473                 if (crd1->crd_alg == CRYPTO_MD5_HMAC ||
 2474                     crd1->crd_alg == CRYPTO_SHA1_HMAC ||
 2475                     crd1->crd_alg == CRYPTO_SHA1 ||
 2476                     crd1->crd_alg == CRYPTO_MD5) {
 2477                         maccrd = crd1;
 2478                         enccrd = NULL;
 2479                 } else if (crd1->crd_alg == CRYPTO_DES_CBC ||
 2480                     crd1->crd_alg == CRYPTO_3DES_CBC ||
 2481                     crd1->crd_alg == CRYPTO_AES_CBC ||
 2482                     crd1->crd_alg == CRYPTO_ARC4) {
 2483                         if ((crd1->crd_flags & CRD_F_ENCRYPT) == 0)
 2484                                 cmd->base_masks |= HIFN_BASE_CMD_DECODE;
 2485                         maccrd = NULL;
 2486                         enccrd = crd1;
 2487                 } else {
 2488                         err = EINVAL;
 2489                         goto errout;
 2490                 }
 2491         } else {
 2492                 if ((crd1->crd_alg == CRYPTO_MD5_HMAC ||
 2493                      crd1->crd_alg == CRYPTO_SHA1_HMAC ||
 2494                      crd1->crd_alg == CRYPTO_MD5 ||
 2495                      crd1->crd_alg == CRYPTO_SHA1) &&
 2496                     (crd2->crd_alg == CRYPTO_DES_CBC ||
 2497                      crd2->crd_alg == CRYPTO_3DES_CBC ||
 2498                      crd2->crd_alg == CRYPTO_AES_CBC ||
 2499                      crd2->crd_alg == CRYPTO_ARC4) &&
 2500                     ((crd2->crd_flags & CRD_F_ENCRYPT) == 0)) {
 2501                         cmd->base_masks = HIFN_BASE_CMD_DECODE;
 2502                         maccrd = crd1;
 2503                         enccrd = crd2;
 2504                 } else if ((crd1->crd_alg == CRYPTO_DES_CBC ||
 2505                      crd1->crd_alg == CRYPTO_ARC4 ||
 2506                      crd1->crd_alg == CRYPTO_3DES_CBC ||
 2507                      crd1->crd_alg == CRYPTO_AES_CBC) &&
 2508                     (crd2->crd_alg == CRYPTO_MD5_HMAC ||
 2509                      crd2->crd_alg == CRYPTO_SHA1_HMAC ||
 2510                      crd2->crd_alg == CRYPTO_MD5 ||
 2511                      crd2->crd_alg == CRYPTO_SHA1) &&
 2512                     (crd1->crd_flags & CRD_F_ENCRYPT)) {
 2513                         enccrd = crd1;
 2514                         maccrd = crd2;
 2515                 } else {
 2516                         /*
 2517                          * We cannot order the 7751 as requested
 2518                          */
 2519                         err = EINVAL;
 2520                         goto errout;
 2521                 }
 2522         }
 2523 
 2524         if (enccrd) {
 2525                 cmd->enccrd = enccrd;
 2526                 cmd->base_masks |= HIFN_BASE_CMD_CRYPT;
 2527                 switch (enccrd->crd_alg) {
 2528                 case CRYPTO_ARC4:
 2529                         cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_RC4;
 2530                         break;
 2531                 case CRYPTO_DES_CBC:
 2532                         cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_DES |
 2533                             HIFN_CRYPT_CMD_MODE_CBC |
 2534                             HIFN_CRYPT_CMD_NEW_IV;
 2535                         break;
 2536                 case CRYPTO_3DES_CBC:
 2537                         cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_3DES |
 2538                             HIFN_CRYPT_CMD_MODE_CBC |
 2539                             HIFN_CRYPT_CMD_NEW_IV;
 2540                         break;
 2541                 case CRYPTO_AES_CBC:
 2542                         cmd->cry_masks |= HIFN_CRYPT_CMD_ALG_AES |
 2543                             HIFN_CRYPT_CMD_MODE_CBC |
 2544                             HIFN_CRYPT_CMD_NEW_IV;
 2545                         break;
 2546                 default:
 2547                         err = EINVAL;
 2548                         goto errout;
 2549                 }
 2550                 if (enccrd->crd_alg != CRYPTO_ARC4) {
 2551                         ivlen = ((enccrd->crd_alg == CRYPTO_AES_CBC) ?
 2552                                 HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH);
 2553                         if (enccrd->crd_flags & CRD_F_ENCRYPT) {
 2554                                 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
 2555                                         bcopy(enccrd->crd_iv, cmd->iv, ivlen);
 2556                                 else
 2557                                         bcopy(sc->sc_sessions[session].hs_iv,
 2558                                             cmd->iv, ivlen);
 2559 
 2560                                 if ((enccrd->crd_flags & CRD_F_IV_PRESENT)
 2561                                     == 0) {
 2562                                         crypto_copyback(crp->crp_flags,
 2563                                             crp->crp_buf, enccrd->crd_inject,
 2564                                             ivlen, cmd->iv);
 2565                                 }
 2566                         } else {
 2567                                 if (enccrd->crd_flags & CRD_F_IV_EXPLICIT)
 2568                                         bcopy(enccrd->crd_iv, cmd->iv, ivlen);
 2569                                 else {
 2570                                         crypto_copydata(crp->crp_flags,
 2571                                             crp->crp_buf, enccrd->crd_inject,
 2572                                             ivlen, cmd->iv);
 2573                                 }
 2574                         }
 2575                 }
 2576 
 2577                 if (enccrd->crd_flags & CRD_F_KEY_EXPLICIT)
 2578                         cmd->cry_masks |= HIFN_CRYPT_CMD_NEW_KEY;
 2579                 cmd->ck = enccrd->crd_key;
 2580                 cmd->cklen = enccrd->crd_klen >> 3;
 2581                 cmd->cry_masks |= HIFN_CRYPT_CMD_NEW_KEY;
 2582 
 2583                 /* 
 2584                  * Need to specify the size for the AES key in the masks.
 2585                  */
 2586                 if ((cmd->cry_masks & HIFN_CRYPT_CMD_ALG_MASK) ==
 2587                     HIFN_CRYPT_CMD_ALG_AES) {
 2588                         switch (cmd->cklen) {
 2589                         case 16:
 2590                                 cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_128;
 2591                                 break;
 2592                         case 24:
 2593                                 cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_192;
 2594                                 break;
 2595                         case 32:
 2596                                 cmd->cry_masks |= HIFN_CRYPT_CMD_KSZ_256;
 2597                                 break;
 2598                         default:
 2599                                 err = EINVAL;
 2600                                 goto errout;
 2601                         }
 2602                 }
 2603         }
 2604 
 2605         if (maccrd) {
 2606                 cmd->maccrd = maccrd;
 2607                 cmd->base_masks |= HIFN_BASE_CMD_MAC;
 2608 
 2609                 switch (maccrd->crd_alg) {
 2610                 case CRYPTO_MD5:
 2611                         cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 |
 2612                             HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH |
 2613                             HIFN_MAC_CMD_POS_IPSEC;
 2614                        break;
 2615                 case CRYPTO_MD5_HMAC:
 2616                         cmd->mac_masks |= HIFN_MAC_CMD_ALG_MD5 |
 2617                             HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC |
 2618                             HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC;
 2619                         break;
 2620                 case CRYPTO_SHA1:
 2621                         cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 |
 2622                             HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HASH |
 2623                             HIFN_MAC_CMD_POS_IPSEC;
 2624                         break;
 2625                 case CRYPTO_SHA1_HMAC:
 2626                         cmd->mac_masks |= HIFN_MAC_CMD_ALG_SHA1 |
 2627                             HIFN_MAC_CMD_RESULT | HIFN_MAC_CMD_MODE_HMAC |
 2628                             HIFN_MAC_CMD_POS_IPSEC | HIFN_MAC_CMD_TRUNC;
 2629                         break;
 2630                 }
 2631 
 2632                 if (maccrd->crd_alg == CRYPTO_SHA1_HMAC ||
 2633                      maccrd->crd_alg == CRYPTO_MD5_HMAC) {
 2634                         cmd->mac_masks |= HIFN_MAC_CMD_NEW_KEY;
 2635                         bcopy(maccrd->crd_key, cmd->mac, maccrd->crd_klen >> 3);
 2636                         bzero(cmd->mac + (maccrd->crd_klen >> 3),
 2637                             HIFN_MAC_KEY_LENGTH - (maccrd->crd_klen >> 3));
 2638                 }
 2639         }
 2640 
 2641         cmd->crp = crp;
 2642         cmd->session_num = session;
 2643         cmd->softc = sc;
 2644 
 2645         err = hifn_crypto(sc, cmd, crp, hint);
 2646         if (!err) {
 2647                 return 0;
 2648         } else if (err == ERESTART) {
 2649                 /*
 2650                  * There weren't enough resources to dispatch the request
 2651                  * to the part.  Notify the caller so they'll requeue this
 2652                  * request and resubmit it again soon.
 2653                  */
 2654 #ifdef HIFN_DEBUG
 2655                 if (hifn_debug)
 2656                         device_printf(sc->sc_dev, "requeue request\n");
 2657 #endif
 2658                 free(cmd, M_DEVBUF);
 2659                 sc->sc_needwakeup |= CRYPTO_SYMQ;
 2660                 return (err);
 2661         }
 2662 
 2663 errout:
 2664         if (cmd != NULL)
 2665                 free(cmd, M_DEVBUF);
 2666         if (err == EINVAL)
 2667                 hifnstats.hst_invalid++;
 2668         else
 2669                 hifnstats.hst_nomem++;
 2670         crp->crp_etype = err;
 2671         crypto_done(crp);
 2672         return (err);
 2673 }
 2674 
 2675 static void
 2676 hifn_abort(struct hifn_softc *sc)
 2677 {
 2678         struct hifn_dma *dma = sc->sc_dma;
 2679         struct hifn_command *cmd;
 2680         struct cryptop *crp;
 2681         int i, u;
 2682 
 2683         i = dma->resk; u = dma->resu;
 2684         while (u != 0) {
 2685                 cmd = dma->hifn_commands[i];
 2686                 KASSERT(cmd != NULL, ("hifn_abort: null command slot %u", i));
 2687                 dma->hifn_commands[i] = NULL;
 2688                 crp = cmd->crp;
 2689 
 2690                 if ((dma->resr[i].l & htole32(HIFN_D_VALID)) == 0) {
 2691                         /* Salvage what we can. */
 2692                         u_int8_t *macbuf;
 2693 
 2694                         if (cmd->base_masks & HIFN_BASE_CMD_MAC) {
 2695                                 macbuf = dma->result_bufs[i];
 2696                                 macbuf += 12;
 2697                         } else
 2698                                 macbuf = NULL;
 2699                         hifnstats.hst_opackets++;
 2700                         hifn_callback(sc, cmd, macbuf);
 2701                 } else {
 2702                         if (cmd->src_map == cmd->dst_map) {
 2703                                 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
 2704                                     BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
 2705                         } else {
 2706                                 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
 2707                                     BUS_DMASYNC_POSTWRITE);
 2708                                 bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
 2709                                     BUS_DMASYNC_POSTREAD);
 2710                         }
 2711 
 2712                         if (cmd->src_m != cmd->dst_m) {
 2713                                 m_freem(cmd->src_m);
 2714                                 crp->crp_buf = (caddr_t)cmd->dst_m;
 2715                         }
 2716 
 2717                         /* non-shared buffers cannot be restarted */
 2718                         if (cmd->src_map != cmd->dst_map) {
 2719                                 /*
 2720                                  * XXX should be EAGAIN, delayed until
 2721                                  * after the reset.
 2722                                  */
 2723                                 crp->crp_etype = ENOMEM;
 2724                                 bus_dmamap_unload(sc->sc_dmat, cmd->dst_map);
 2725                                 bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map);
 2726                         } else
 2727                                 crp->crp_etype = ENOMEM;
 2728 
 2729                         bus_dmamap_unload(sc->sc_dmat, cmd->src_map);
 2730                         bus_dmamap_destroy(sc->sc_dmat, cmd->src_map);
 2731 
 2732                         free(cmd, M_DEVBUF);
 2733                         if (crp->crp_etype != EAGAIN)
 2734                                 crypto_done(crp);
 2735                 }
 2736 
 2737                 if (++i == HIFN_D_RES_RSIZE)
 2738                         i = 0;
 2739                 u--;
 2740         }
 2741         dma->resk = i; dma->resu = u;
 2742 
 2743         hifn_reset_board(sc, 1);
 2744         hifn_init_dma(sc);
 2745         hifn_init_pci_registers(sc);
 2746 }
 2747 
 2748 static void
 2749 hifn_callback(struct hifn_softc *sc, struct hifn_command *cmd, u_int8_t *macbuf)
 2750 {
 2751         struct hifn_dma *dma = sc->sc_dma;
 2752         struct cryptop *crp = cmd->crp;
 2753         struct cryptodesc *crd;
 2754         struct mbuf *m;
 2755         int totlen, i, u, ivlen;
 2756 
 2757         if (cmd->src_map == cmd->dst_map) {
 2758                 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
 2759                     BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
 2760         } else {
 2761                 bus_dmamap_sync(sc->sc_dmat, cmd->src_map,
 2762                     BUS_DMASYNC_POSTWRITE);
 2763                 bus_dmamap_sync(sc->sc_dmat, cmd->dst_map,
 2764                     BUS_DMASYNC_POSTREAD);
 2765         }
 2766 
 2767         if (crp->crp_flags & CRYPTO_F_IMBUF) {
 2768                 if (cmd->src_m != cmd->dst_m) {
 2769                         crp->crp_buf = (caddr_t)cmd->dst_m;
 2770                         totlen = cmd->src_mapsize;
 2771                         for (m = cmd->dst_m; m != NULL; m = m->m_next) {
 2772                                 if (totlen < m->m_len) {
 2773                                         m->m_len = totlen;
 2774                                         totlen = 0;
 2775                                 } else
 2776                                         totlen -= m->m_len;
 2777                         }
 2778                         cmd->dst_m->m_pkthdr.len = cmd->src_m->m_pkthdr.len;
 2779                         m_freem(cmd->src_m);
 2780                 }
 2781         }
 2782 
 2783         if (cmd->sloplen != 0) {
 2784                 crypto_copyback(crp->crp_flags, crp->crp_buf,
 2785                     cmd->src_mapsize - cmd->sloplen, cmd->sloplen,
 2786                     (caddr_t)&dma->slop[cmd->slopidx]);
 2787         }
 2788 
 2789         i = dma->dstk; u = dma->dstu;
 2790         while (u != 0) {
 2791                 if (i == HIFN_D_DST_RSIZE)
 2792                         i = 0;
 2793                 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
 2794                     BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
 2795                 if (dma->dstr[i].l & htole32(HIFN_D_VALID)) {
 2796                         bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
 2797                             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
 2798                         break;
 2799                 }
 2800                 i++, u--;
 2801         }
 2802         dma->dstk = i; dma->dstu = u;
 2803 
 2804         hifnstats.hst_obytes += cmd->dst_mapsize;
 2805 
 2806         if ((cmd->base_masks & (HIFN_BASE_CMD_CRYPT | HIFN_BASE_CMD_DECODE)) ==
 2807             HIFN_BASE_CMD_CRYPT) {
 2808                 for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
 2809                         if (crd->crd_alg != CRYPTO_DES_CBC &&
 2810                             crd->crd_alg != CRYPTO_3DES_CBC &&
 2811                             crd->crd_alg != CRYPTO_AES_CBC)
 2812                                 continue;
 2813                         ivlen = ((crd->crd_alg == CRYPTO_AES_CBC) ?
 2814                                 HIFN_AES_IV_LENGTH : HIFN_IV_LENGTH);
 2815                         crypto_copydata(crp->crp_flags, crp->crp_buf,
 2816                             crd->crd_skip + crd->crd_len - ivlen, ivlen,
 2817                             cmd->softc->sc_sessions[cmd->session_num].hs_iv);
 2818                         break;
 2819                 }
 2820         }
 2821 
 2822         if (macbuf != NULL) {
 2823                 for (crd = crp->crp_desc; crd; crd = crd->crd_next) {
 2824                         int len;
 2825 
 2826                         if (crd->crd_alg != CRYPTO_MD5 &&
 2827                             crd->crd_alg != CRYPTO_SHA1 &&
 2828                             crd->crd_alg != CRYPTO_MD5_HMAC &&
 2829                             crd->crd_alg != CRYPTO_SHA1_HMAC) {
 2830                                 continue;
 2831                         }
 2832                         len = cmd->softc->sc_sessions[cmd->session_num].hs_mlen;
 2833                         crypto_copyback(crp->crp_flags, crp->crp_buf,
 2834                             crd->crd_inject, len, macbuf);
 2835                         break;
 2836                 }
 2837         }
 2838 
 2839         if (cmd->src_map != cmd->dst_map) {
 2840                 bus_dmamap_unload(sc->sc_dmat, cmd->dst_map);
 2841                 bus_dmamap_destroy(sc->sc_dmat, cmd->dst_map);
 2842         }
 2843         bus_dmamap_unload(sc->sc_dmat, cmd->src_map);
 2844         bus_dmamap_destroy(sc->sc_dmat, cmd->src_map);
 2845         free(cmd, M_DEVBUF);
 2846         crypto_done(crp);
 2847 }
 2848 
 2849 /*
 2850  * 7811 PB3 rev/2 parts lock-up on burst writes to Group 0
 2851  * and Group 1 registers; avoid conditions that could create
 2852  * burst writes by doing a read in between the writes.
 2853  *
 2854  * NB: The read we interpose is always to the same register;
 2855  *     we do this because reading from an arbitrary (e.g. last)
 2856  *     register may not always work.
 2857  */
 2858 static void
 2859 hifn_write_reg_0(struct hifn_softc *sc, bus_size_t reg, u_int32_t val)
 2860 {
 2861         if (sc->sc_flags & HIFN_IS_7811) {
 2862                 if (sc->sc_bar0_lastreg == reg - 4)
 2863                         bus_space_read_4(sc->sc_st0, sc->sc_sh0, HIFN_0_PUCNFG);
 2864                 sc->sc_bar0_lastreg = reg;
 2865         }
 2866         bus_space_write_4(sc->sc_st0, sc->sc_sh0, reg, val);
 2867 }
 2868 
 2869 static void
 2870 hifn_write_reg_1(struct hifn_softc *sc, bus_size_t reg, u_int32_t val)
 2871 {
 2872         if (sc->sc_flags & HIFN_IS_7811) {
 2873                 if (sc->sc_bar1_lastreg == reg - 4)
 2874                         bus_space_read_4(sc->sc_st1, sc->sc_sh1, HIFN_1_REVID);
 2875                 sc->sc_bar1_lastreg = reg;
 2876         }
 2877         bus_space_write_4(sc->sc_st1, sc->sc_sh1, reg, val);
 2878 }

Cache object: d8917a02e29ec901891049662508c889


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