pcmcia/cis/cis_handlers.c

	cis_handlers.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * This file contains the tuple handlers that are called by the CIS
 *  parser.
 *
 * XXX - how about a better explaination??
 */

#include <sys/types.h>
#include <sys/systm.h>
#include <sys/user.h>
#include <sys/buf.h>
#include <sys/file.h>
#include <sys/uio.h>
#include <sys/conf.h>
#include <sys/stat.h>
#include <sys/autoconf.h>
#include <sys/vtoc.h>
#include <sys/dkio.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/debug.h>
#include <sys/ddi_impldefs.h>
#include <sys/kstat.h>
#include <sys/kmem.h>
#include <sys/modctl.h>
#include <sys/kobj.h>
#include <sys/callb.h>

#include <sys/pctypes.h>
#include <pcmcia/sys/cs_types.h>
#include <pcmcia/sys/cis.h>
#include <pcmcia/sys/cis_handlers.h>
#include <pcmcia/sys/cs.h>
#include <pcmcia/sys/cs_priv.h>
#include <pcmcia/sys/cis_protos.h>

/*
 * Function prototypes
 */
static void cistpl_pd_parse(cistpl_t *, cistpl_cftable_entry_pwr_t *);
static void cis_return_name(cistpl_callout_t *, cistpl_get_tuple_name_t *);

/*
 * cis_tuple_handler - call the handler for the tuple described by the
 *              tuple pointer
 *
 *  cistpl_callout_t *co - pointer to callout structure
 *              array to use to find this tuple
 *  cistpl_t *tp - pointer to a tuple structure
 *  int flags - action for the handler to perform
 * XXX - we need a description of the flags passed to the tuple handler
 *  void *arg - argument to pass on to tuple handler
 *
 * If the tuple is not recognized but is is a vendor-specific tuple, we
 *  set the CISTPLF_VENDOR_SPECIFIC flag in the tuple.
 *
 * We return CISTPLF_UNKNOWN if this is an unrecognized tuple as well as
 *  set the CISTPLF_UNKNOWN flag in the tuple list structure.  Note
 *  that encountering an unknown tuple is not necessarily an error,
 *  so we don't set the HANDTPL_ERROR flag on the return code.  It
 *  is up to the caller to determine what an unrecognized tuple means.
 *
 * If this is a recognized tuple, the apropriate tuple handler is called and
 *  the return value from the handler is returned directly to the caller.
 *
 * The void *arg is optional, and it's meaning is dependent on the
 *  particular tuple handler called and the flags parameter.
 *
 * For the special case of HANDTPL_RETURN_NAME, we don't bother calling the
 *  tuple handler and just return the tuple name to the caller.
 */
uint32_t
cis_tuple_handler(cistpl_callout_t *co, cistpl_t *tp, uint32_t flags,
                    void *arg, cisdata_t subtype)
{
    /*
     * Check to see if this is a vendor-specific tuple.
     */
    if (CISTPL_IS_VENDOR_SPECIFIC(tp->type))
        tp->flags |= CISTPLF_VENDOR_SPECIFIC;

    /*
     * Scan the callout list until we find the tuple passed to us, or we
     *  encounter a CISTPL_END in the callout list, which signals that
     *  there are no more tuples in the callout list.
     */
    while (co->type != (cisdata_t)CISTPL_END) {
        if (co->type == tp->type &&
        ((tp->type != CISTPL_FUNCE) ||
            (tp->type == CISTPL_FUNCE && co->subtype == subtype))) {
            tp->flags &= ~CISTPLF_UNKNOWN;
            if (flags & HANDTPL_RETURN_NAME) {
                cis_return_name(co, (cistpl_get_tuple_name_t *)arg);
                return (CISTPLF_NOERROR);
            } else {
                return ((*co->handler) (co, tp, flags, arg));
            } /* HANDTPL_RETURN_NAME */
        } /* if */
        co++;
    } /* while */

    /*
     * If we didn't recognize the tuple and the caller wants the tuple
     *  name back, then return the "unknown tuple" string. At this
     *  point, "co" will be pointing to the last entry in the
     *  callout list. It's not an error to not recognize the tuple
     *  when the operation is HANDTPL_RETURN_NAME.
     */
    if (flags & HANDTPL_RETURN_NAME) {
        cis_return_name(co, (cistpl_get_tuple_name_t *)arg);
        return (CISTPLF_NOERROR);
    }

    tp->flags |= CISTPLF_UNKNOWN;
    return (CISTPLF_UNKNOWN);
}

/*
 * cis_no_tuple_handler - this generic tuple handler is used if no special
 *              tuple processing is required for the passed
 *              tuple
 *
 *  cistpl_callout_t *co - pointer to this tuple's entry in the
 *              tuple callout structure
 *  cistpl_t *tp - pointer to this tuple's entry in the local linked list
 *  int flags - action to perform
 *
 * This handler will set the CISTPLF_COPYOK flag if the tuple link is greater
 *  than zero, indicating that it's OK to copy the tuple data body. It
 *  will also set whatever flags are specified in the callout structure.
 *
 * We always set the CISTPLF_VALID when we're called with HANDTPL_COPY_DONE.
 *
 * We return CISTPLF_UNKNOWN if we're being called to parse the tuple.
 *
 * We return CISTPLF_NOERROR in every other case to indicate that this is a
 *  recognized tuple.
 */
/*ARGSUSED*/
uint32_t
cis_no_tuple_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    if (flags & HANDTPL_SET_FLAGS) {
        tp->flags |= co->flags; /* XXX - is = the right thing here? */
        if (tp->len > 0)
            tp->flags |= CISTPLF_COPYOK;
    }

    if (flags & HANDTPL_COPY_DONE)
        tp->flags |= CISTPLF_VALID;

    if (flags & HANDTPL_PARSE_LTUPLE)
        return (CISTPLF_UNKNOWN);

    return (CISTPLF_NOERROR);
}

/*
 * cis_unknown_tuple_handler - this generic tuple handler is used if we don't
 *              understand this tuple
 *
 *  cistpl_callout_t *co - pointer to this tuple's entry in the
 *              tuple callout structure
 *  cistpl_t *tp - pointer to this tuple's entry in the local linked list
 *  int flags - action to perform
 *
 * This handler will not set the CISTPLF_COPYOK flag since we don't know the
 *  contents of a vendor-specific tuple.
 *
 * We always set the CISTPLF_VALID when we're called with HANDTPL_COPY_DONE
 *  to specify that we understand this tuple's code, but not it's data
 *  body.
 *
 * We return CISTPLF_UNKNOWN if we're being called to parse the tuple or to
 *  perform any other operation.
 */
/*ARGSUSED*/
uint32_t
cis_unknown_tuple_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    if (flags & HANDTPL_SET_FLAGS) {
        tp->flags |= co->flags; /* XXX - is = the right thing here? */
        return (CISTPLF_NOERROR);
    }

    if (flags & HANDTPL_COPY_DONE) {
        tp->flags |= CISTPLF_VALID;
        return (CISTPLF_NOERROR);
    }

    return (CISTPLF_UNKNOWN);
}

/*
 * cistpl_vers_1_handler - handler for the CISTPL_VERS_1 tuple
 *
 *  void *arg - points to a cistpl_vers_1_t * where the
 *          information is stuffed into
 */
uint32_t
cistpl_vers_1_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_vers_1_t *cs = (cistpl_vers_1_t *)arg;


        RESET_TP(tp);

        cs->major = GET_BYTE(tp);
        cs->minor = GET_BYTE(tp);
        for (cs->ns = 0; GET_LEN(tp) > 0 &&
                /* CSTYLED */
                cs->ns < CISTPL_VERS_1_MAX_PROD_STRINGS; ) {
            (void) strcpy(cs->pi[cs->ns++], cis_getstr(tp));
        } /* for */
    } /* HANDTPL_PARSE_LTUPLE */

    return (CISTPLF_NOERROR);
}

/*
 * cistpl_config_handler - handler for the CISTPL_CONFIG tuple
 *
 *  void *arg - points to a XXX where the information is stuffed into
 *
 * For the first ten config registers we set the present flags in the
 *  cistpl_config_t if the register exists.  The flags that we use
 *  for this are the same as the flags reguired for the Card Services
 *  RequestConfiguration function and they can be used by clients
 *  directly without requiring any remapping of values.
 *
 * XXX we don't handle TPCC_SBTPL subtuples yet
 */

uint32_t    config_regs_present_map[] = {
    CONFIG_OPTION_REG_PRESENT,  /* COR present */
    CONFIG_STATUS_REG_PRESENT,  /* STAT reg present */
    CONFIG_PINREPL_REG_PRESENT, /* PRR present */
    CONFIG_COPY_REG_PRESENT,    /* COPY reg present */
    CONFIG_EXSTAT_REG_PRESENT,  /* EXSTAT reg present */
    CONFIG_IOBASE0_REG_PRESENT, /* IOBASE0 reg present */
    CONFIG_IOBASE1_REG_PRESENT, /* IOBASE1 reg present */
    CONFIG_IOBASE2_REG_PRESENT, /* IOBASE2 reg present */
    CONFIG_IOBASE3_REG_PRESENT, /* IOBASE3 reg present */
    CONFIG_IOLIMIT_REG_PRESENT, /* IOLIMIT reg present */
};

uint32_t
cistpl_config_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    cisdata_t tpcc_sz;
    int i, n, nrb, na, hr = 0;

    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_config_t *cr = (cistpl_config_t *)arg;
        int crn = 0;

        RESET_TP(tp);

        tpcc_sz = GET_BYTE(tp);     /* config regs size fields */
        cr->last = GET_BYTE(tp);    /* last config index */

        na = (tpcc_sz&3)+1;     /* config regs address bytes */
        nrb = ((tpcc_sz>>2)&0x0f)+1;    /* number of bytes in config */
                        /*  regs presence mask */

        /*
         * Construct the base offset address for the config registers.
         *  We jump through these hoops because the base address
         *  can be between one and four bytes in length.
         */
        cr->base = 0;
        n = na;
        while (n--)
            cr->base |= ((GET_BYTE(tp) & 0x0ff) <<
                            (8 * (na - (n+1))));

        /*
         * Go through the config register presense mask bit by bit and
         *  figure out which config registers are present and which
         *  aren't.
         * For the first ten config registers, set the appropriate
         *  bits in the cr->present member so that the caller
         *  doesn't have to do this.
         */
        cr->nr = 0;
        cr->present = 0;
        n = nrb;
        while (n--) {
            for (i = 0; i < 8; i++, crn++) {
                if (LOOK_BYTE(tp) & (1<<i)) {
                    if (crn < (sizeof (config_regs_present_map)/
                            sizeof (uint32_t)))
                    cr->present |=
                        config_regs_present_map[crn];
                    cr->nr++;
                    cr->hr = hr;
                    cr->regs[hr] = MAKE_CONFIG_REG_ADDR(
                                cr->base, hr);
                } /* LOOK_BYTE */
                hr++;
            } /* for */
            (void) GET_BYTE(tp);
        } /* while */
    }

    return (CISTPLF_NOERROR);
}

/*
 * cistpl_device_handler - handler for the CISTPL_DEVICE, CISTPL_DEVICE_A,
 *              CISTPL_DEVICE_OC and CISTPL_DEVICE_OA tuples
 *
 *  void *arg - points to a cistpl_device_t * where the
 *          information is stuffed into
 *
 * XXX - we only handle CISTPL_DEVICE_MAX_DEVICES device descriptions
 *      described in the tuple
 */
uint32_t
cistpl_device_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    cisdata_t dev_id;

    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        convert_speed_t convert_speed;
        cistpl_device_t *dt = (cistpl_device_t *)arg;
        cistpl_device_node_t *cdn;

        /*
         * XXX - fix this to look for more than one device definition
         * XXX - fix this to handle the OC fields for
         *  CISTPL_DEVICE_OC and CISTPL_DEVICE_OA
         */
        dt->num_devices = 1;
        cdn = &dt->devnode[0];

        cdn->flags = 0;

        RESET_TP(tp);

        dev_id = GET_BYTE(tp);

        /*
         * Get the device speed code.  If it's 7, then there is an
         *  extended speed code table in use, so parse that.
         *  If it's anything else, get the speed information
         *  directly from the device speed code.
         */
        if ((dev_id & 7) == 7) {
            cdn->nS_speed = cistpl_devspeed(tp, 0, CISTPL_DEVSPEED_EXT);
        } else {
            cdn->nS_speed = cistpl_devspeed(NULL, dev_id,
                            CISTPL_DEVSPEED_TABLE);
        }

        /*
         * Convert the speed in nS to a device speed code.
         * XXX -  should check return code from cis_convert_devspeed()
         */
        convert_speed.Attributes = CONVERT_NS_TO_DEVSPEED;
        convert_speed.nS = cdn->nS_speed;
        (void) cis_convert_devspeed(&convert_speed);
        cdn->speed = convert_speed.devspeed;

        if (dev_id & 8)
            cdn->flags |= CISTPL_DEVICE_WPS;

        /*
         * Set the device type.  Note that we take the raw value
         *  from the tuple and pass it back to the caller.
         *  If the device type codes in the standard change,
         *  we will have to change our flags as well.
         */
        cdn->type = (dev_id>>4) & 0x0f;

        /*
         * XXX - what about the device_size byte?  Is the spec wrong?
         */
        cdn->size = GET_BYTE(tp);
        /* check for end of list */
        if (cdn->size != 0x0ff) {
            convert_size_t convert_size;

            convert_size.devsize = cdn->size;
            convert_size.Attributes = CONVERT_DEVSIZE_TO_BYTES;
            (void) cis_convert_devsize(&convert_size);
            cdn->size_in_bytes = convert_size.bytes;
        }
    }

    return (CISTPLF_NOERROR);
}

/*
 * cistpl_cftable_handler - handler for the CISTPL_CFTABLE_ENTRY tuple
 *
 *  void *arg - points to a XXX where the information is stuffed into
 *
 *    Return:   CISTPLF_NOERROR - if no error parsing tuple
 *      HANDTPL_ERROR - if error parsing tuple
 */
extern uint32_t cistpl_cftable_io_size_table[];
extern uint32_t cistpl_cftable_shift_table[];

uint32_t
cistpl_cftable_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    cisdata_t tpce_indx, tpce_fs, tpce_td, sf, tpce_io, nr;
    cisdata_t ior_desc, tpce_ir, tpce_msd;
    int i, j;

    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_cftable_entry_t *ce = (cistpl_cftable_entry_t *)arg;

        RESET_TP(tp);

        /*
         * Check to see if we have an interface description byte.  If
         *  we do, grab it and give it directly to the caller, and
         *  set a flag so the caller knows that it's there.
         * We also setup the appropriate values in the ce->pin member
         *  so that clients can feed this value directly to the
         *  Card Services RequestConfiguration call.
         */
        if ((tpce_indx = GET_BYTE(tp)) & CISTPL_CFTABLE_TPCE_IFM) {
            ce->ifc = GET_BYTE(tp);

            ce->pin = 0;

            if (ce->ifc & CISTPL_CFTABLE_TPCE_IF_BVD)
                ce->pin |= (PRR_BVD1_STATUS | PRR_BVD2_STATUS |
                    PRR_BVD1_EVENT | PRR_BVD2_EVENT);
            if (ce->ifc & CISTPL_CFTABLE_TPCE_IF_WP)
                ce->pin |= (PRR_WP_STATUS | PRR_WP_EVENT);
            if (ce->ifc & CISTPL_CFTABLE_TPCE_IF_RDY)
                ce->pin |= (PRR_READY_STATUS | PRR_READY_EVENT);

            ce->flags |= CISTPL_CFTABLE_TPCE_IF;
        }

        /*
         * Return the configuration index to the caller, and set the
         *  default configuration flag if this is a default
         *  configuration.
         */
        ce->index = tpce_indx & CISTPL_CFTABLE_TPCE_CFGENTRYM;
        if (tpce_indx & CISTPL_CFTABLE_TPCE_DEFAULTM)
            ce->flags |= CISTPL_CFTABLE_TPCE_DEFAULT;

        /*
         * Feature selection flags.
         */
        tpce_fs = GET_BYTE(tp);

        /*
         * See what types of power information are available,
         *  and if there is any, set the global power
         *  information flag as well as a flag for each
         *  power description available.
         */
        if (tpce_fs & CISTPL_CFTABLE_TPCE_FS_PWRM) {
            cistpl_cftable_entry_pd_t *pd = &ce->pd;

            ce->flags |= CISTPL_CFTABLE_TPCE_FS_PWR;

            switch (tpce_fs & CISTPL_CFTABLE_TPCE_FS_PWRM) {
            case CISTPL_CFTABLE_TPCE_FS_PWR_VPP2M:
                pd->flags |= CISTPL_CFTABLE_TPCE_FS_PWR_VPP2;
                /* FALLTHROUGH */
            case CISTPL_CFTABLE_TPCE_FS_PWR_VPP1M:
                pd->flags |= CISTPL_CFTABLE_TPCE_FS_PWR_VPP1;
                /* FALLTHROUGH */
            case CISTPL_CFTABLE_TPCE_FS_PWR_VCCM:
                pd->flags |= CISTPL_CFTABLE_TPCE_FS_PWR_VCC;
            } /* switch */
        } /* if (CISTPL_CFTABLE_TPCE_FS_PWRM) */

        /*
         * Set up the global memory information flag.
         */
        if (tpce_fs & CISTPL_CFTABLE_TPCE_FS_MEMM)
            ce->flags |= CISTPL_CFTABLE_TPCE_FS_MEM;

        /*
         * Parse the various power description structures.
         */
        if (ce->flags & CISTPL_CFTABLE_TPCE_FS_PWR) {
            cistpl_cftable_entry_pd_t *pd = &ce->pd;
            cistpl_cftable_entry_pwr_t *pwr;
            /*
             * Collect any Vcc information.
             */
            if (pd->flags & CISTPL_CFTABLE_TPCE_FS_PWR_VCC) {
                pwr = &pd->pd_vcc;
                cistpl_pd_parse(tp, pwr);
            }
            /*
             * Collect any Vpp1 information.
             */
            if (pd->flags & CISTPL_CFTABLE_TPCE_FS_PWR_VPP1) {
                pwr = &pd->pd_vpp1;
                cistpl_pd_parse(tp, pwr);
            }
            /*
             * Collect any Vpp2 information.
             */
            if (pd->flags & CISTPL_CFTABLE_TPCE_FS_PWR_VPP2) {
                pwr = &pd->pd_vpp2;
                cistpl_pd_parse(tp, pwr);
            }
        } /* if (CISTPL_CFTABLE_TPCE_FS_PWR) */

        /*
         * Check to see if there's any timing information, and if
         *  so, parse the tuple data and store it in the
         *  caller's structure.  Set a flag in the global
         *  flag field indicating that there is timing information.
         */
        if (tpce_fs & CISTPL_CFTABLE_TPCE_FS_TDM) {
            convert_speed_t convert_speed;
            cistpl_cftable_entry_speed_t *sp = &ce->speed;
            ce->flags |= CISTPL_CFTABLE_TPCE_FS_TD;
            tpce_td = GET_BYTE(tp);
            /*
             * Parse TPCE_TD to get the various timing
             *  scale factors. Each scale factor has
             *  a value that indicates that the particular
             *  timing parameter doesn't exist.
             */
            if ((sf = (tpce_td &
                    CISTPL_CFTABLE_TPCE_FS_TD_WAITM)) !=
                CISTPL_CFTABLE_TPCE_FS_TD_WAITM) {
                sp->nS_wait = cistpl_devspeed(tp,
                        GET_TPCE_FS_TD_WAITS(sf),
                        CISTPL_DEVSPEED_EXT);
                convert_speed.Attributes =
                            CONVERT_NS_TO_DEVSPEED;
                convert_speed.nS = sp->nS_wait;
                (void) cis_convert_devspeed(&convert_speed);
                sp->wait = convert_speed.devspeed;
                sp->flags |= CISTPL_CFTABLE_TPCE_FS_TD_WAIT;
            }

            if ((sf = (tpce_td & CISTPL_CFTABLE_TPCE_FS_TD_RDYM)) !=
                CISTPL_CFTABLE_TPCE_FS_TD_RDYM) {
                sp->nS_rdybsy = cistpl_devspeed(tp,
                        GET_TPCE_FS_TD_RDYS(sf),
                        CISTPL_DEVSPEED_EXT);
                convert_speed.Attributes =
                            CONVERT_NS_TO_DEVSPEED;
                convert_speed.nS = sp->nS_rdybsy;
                (void) cis_convert_devspeed(&convert_speed);
                sp->rdybsy = convert_speed.devspeed;
                sp->flags |= CISTPL_CFTABLE_TPCE_FS_TD_RDY;
            }

            if ((sf = (tpce_td &
                    CISTPL_CFTABLE_TPCE_FS_TD_RSVDM)) !=
                CISTPL_CFTABLE_TPCE_FS_TD_RSVDM) {
                sp->nS_rsvd = cistpl_devspeed(tp,
                        GET_TPCE_FS_TD_RSVDS(sf),
                        CISTPL_DEVSPEED_EXT);
                convert_speed.Attributes =
                            CONVERT_NS_TO_DEVSPEED;
                convert_speed.nS = sp->nS_rsvd;
                (void) cis_convert_devspeed(&convert_speed);
                sp->rsvd = convert_speed.devspeed;
                sp->flags |= CISTPL_CFTABLE_TPCE_FS_TD_RSVD;
            }
        } /* if (CISTPL_CFTABLE_TPCE_FS_TDM) */


        /*
         * Parse any I/O address information.  If there is I/O
         *  inforamtion, set a flag in the global flag field
         *  to let the caller know.
         */
        if (tpce_fs & CISTPL_CFTABLE_TPCE_FS_IOM) {
            cistpl_cftable_entry_io_t *io = &ce->io;

            ce->flags |= CISTPL_CFTABLE_TPCE_FS_IO;
            tpce_io = GET_BYTE(tp);
            /*
             * Pass any I/O flags that are in the tuple directly
             *  to the caller.
             */
            io->flags = tpce_io;
            io->addr_lines = tpce_io &
                        CISTPL_CFTABLE_TPCE_FS_IO_ALM;
            /*
             * If there are any ranges, extract the number of
             *  ranges and the range descriptions.
             */
            if (tpce_io & CISTPL_CFTABLE_TPCE_FS_IO_RANGEM) {
                cistpl_cftable_entry_io_range_t *ior;
                ior_desc = GET_BYTE(tp);
                /*
                 * Number of I/O ranges is the value specified
                 *  in the tuple plus one, so there's
                 *  always at least one I/O range if the
                 *  CISTPL_CFTABLE_TPCE_FS_IO_RANGEM bit
                 *  in the I/O flags register is set.
                 */
                nr = (ior_desc & 0x0f) + 1;
                io->ranges = nr;
                /*
                 * Cycle through each I/O range.
                 */
                for (i = 0; i < (int)nr; i++) {
                    ior = &io->range[i];
                    ior->addr = 0;
                    ior->length = 0;
                    /*
                     * Gather the address information.
                     *  It's OK if there's no address
                     *  information in which case this
                     *  loop will never execute.
                     */
                    for (j = 0; j <
                        cistpl_cftable_io_size_table[
                            (ior_desc>>4)&3];
                                    j++)
                        ior->addr |= (GET_BYTE(tp) <<
                        cistpl_cftable_shift_table[j]);
                    /*
                     * Gather the length information.
                     *  It's OK if there's no length
                     *  information in which case this
                     *  loop will never execute.
                     */
                    for (j = 0; j <
                        cistpl_cftable_io_size_table[
                            (ior_desc>>6)&3];
                                    j++)
                        ior->length |= (GET_BYTE(tp) <<
                        cistpl_cftable_shift_table[j]);
                } /* for (nr) */
            } /* if (CISTPL_CFTABLE_TPCE_FS_IO_RANGEM) */
        } /* if (CISTPL_CFTABLE_TPCE_FS_IOM) */

        /*
         * Parse any IRQ information.  If there is IRQ inforamtion,
         *  set a flag in the global flag field to let the
         *  caller know.
         */
        if (tpce_fs & CISTPL_CFTABLE_TPCE_FS_IRQM) {
            cistpl_cftable_entry_irq_t *irq = &ce->irq;

            ce->flags |= CISTPL_CFTABLE_TPCE_FS_IRQ;
            tpce_ir = GET_BYTE(tp);
            /*
             * Pass any IRQ flags that are in the tuple directly
             *  to the caller.
             */
            irq->flags = tpce_ir;
            /*
             * Check for and parse the extended IRQ bitmask
             *  if it exists.
             */
            if (tpce_ir & CISTPL_CFTABLE_TPCE_FS_IRQ_MASKM) {
                irq->irqs = GET_BYTE(tp) & 0x0ff;
                irq->irqs |= (GET_BYTE(tp) << 8)&0x0ff00;
            } else {
                irq->irqs = (1<< (tpce_ir&0x0f));
            }
        } /* if (CISTPL_CFTABLE_TPCE_FS_IRQM) */

        /*
         * Parse any memory information.
         *
         * XXX - should be a cleaner way to parse this information.
         */
        if (ce->flags & CISTPL_CFTABLE_TPCE_FS_MEM) {
            cistpl_cftable_entry_mem_t *mem = &ce->mem;
            cistpl_cftable_entry_mem_window_t *win;
            /*
             * Switch on the type of memory description
             *  information that is available.
             */
            switch (tpce_fs & CISTPL_CFTABLE_TPCE_FS_MEMM) {
                /*
                 * variable length memory space description
                 */
            case CISTPL_CFTABLE_TPCE_FS_MEM3M:
                mem->flags |= CISTPL_CFTABLE_TPCE_FS_MEM3;
                /* memory space descriptor */
                tpce_msd = GET_BYTE(tp);
                mem->windows = ((tpce_msd &
                    (CISTPL_CFTABLE_ENTRY_MAX_MEM_WINDOWS -
                                1)) + 1);
                /*
                 * If there's host address information, let
                 *  the caller know.
                 */
                if (tpce_msd & CISTPL_CFTABLE_TPCE_FS_MEM_HOSTM)
                    mem->flags |=
                        CISTPL_CFTABLE_TPCE_FS_MEM_HOST;
                /*
                 * Cycle through each window space description
                 *  and collect all the interesting bits.
                 */
                for (i = 0; i < mem->windows; i++) {
                    win = &mem->window[i];
                    win->length = 0;
                    win->card_addr = 0;
                    win->host_addr = 0;
                    /*
                     * Gather the length information.
                     *  It's OK if there's no length
                     *  information in which case this
                     *  loop will never execute.
                     */
                    for (j = 0; j <
                        (int)((tpce_msd>>3)&3); j++)
                        win->length |= (GET_BYTE(tp) <<
                        cistpl_cftable_shift_table[j]);
                    /*
                     * Gather the card address information.
                     *  It's OK if there's no card
                     *  address information in which
                     *  case this loop will never
                     *  execute.
                     */
                    for (j = 0; j <
                        (int)((tpce_msd>>5)&3); j++)
                        win->card_addr |=
                            (GET_BYTE(tp) <<
                        cistpl_cftable_shift_table[j]);
                    /*
                     * If there's a host address
                     *  description, grab that
                     *  as well.
                     */
                    if (mem->flags &
                        CISTPL_CFTABLE_TPCE_FS_MEM_HOST) {
                        /*
                         * Gather the host address
                         *  information.  It's OK
                         *  if there's no host
                         *  address information in
                         *  which case this loop
                         *  will never execute.
                         * Note that we use the card
                         *  address size to
                         *  determine how many
                         *  bytes of host address
                         *  are present.
                         */
                        for (j = 0; j <
                            (int)((tpce_msd>>5)&3);
                                    j++)
                            win->host_addr |=
                            (GET_BYTE(tp) <<
                        cistpl_cftable_shift_table[j]);
                    } else {
                        /*
                         * No host address information,
                         *  so the host address is
                         *  equal to the card
                         *  address.
                         */
                        win->host_addr = win->card_addr;
                    }
                } /* for (i<mem->windows) */
                break;
                /*
                 * single length and card base address specified
                 */
            case CISTPL_CFTABLE_TPCE_FS_MEM2M:
                mem->flags |= CISTPL_CFTABLE_TPCE_FS_MEM2;
                win = &mem->window[0];
                mem->windows = 1;
                /*
                 * Construct the size of the window.
                 */
                win->length = GET_BYTE(tp);
                win->length |= (GET_BYTE(tp)<<8);
                win->length *=
                    CISTPL_CFTABLE_TPCE_FS_MEM_PGSIZE;

                /*
                 * Construct the card base address.
                 */
                win->card_addr = GET_BYTE(tp);
                win->card_addr |= (GET_BYTE(tp)<<8);
                win->card_addr *=
                    CISTPL_CFTABLE_TPCE_FS_MEM_PGSIZE;

                /*
                 * In this mode, both the host base address
                 *  and the card base address are equal.
                 */
                win->host_addr = win->card_addr;
                break;
                /*
                 * single length specified
                 */
            case CISTPL_CFTABLE_TPCE_FS_MEM1M:
                mem->flags |= CISTPL_CFTABLE_TPCE_FS_MEM1;
                win = &mem->window[0];
                mem->windows = 1;
                win->card_addr = 0;
                win->host_addr = 0;
                /*
                 * Construct the size of the window.
                 */
                win->length = GET_BYTE(tp);
                win->length |= (GET_BYTE(tp)<<8);
                win->length *=
                    CISTPL_CFTABLE_TPCE_FS_MEM_PGSIZE;
                break;
            } /* switch (CISTPL_CFTABLE_TPCE_FS_MEMM) */
        } /* if (CISTPL_CFTABLE_TPCE_FS_MEM) */

        /*
         * Check for and parse any miscellaneous information.
         *
         * We only understand how to parse the first
         *  CISTPL_CFTABLE_TPCE_FS_MISC_MAX extension
         *  bytes specified in the PC Card 95 standard;
         *  we throw away any other extension bytes that
         *  are past these bytes.
         * XXX Note that the assumption here is that the
         *  size of cistpl_cftable_entry_misc_t->flags
         *  is at least CISTPL_CFTABLE_TPCE_FS_MISC_MAX
         *  bytes in length.
         */
        if (tpce_fs & CISTPL_CFTABLE_TPCE_FS_MISCM) {
            cistpl_cftable_entry_misc_t *misc = &ce->misc;
            int mb = CISTPL_CFTABLE_TPCE_FS_MISC_MAX;

            ce->flags |= CISTPL_CFTABLE_TPCE_FS_MISC;
            misc->flags = 0;

            do {
            if (mb) {
                misc->flags = (misc->flags << 8) | LOOK_BYTE(tp);
                mb--;
            }
            } while ((GET_BYTE(tp) & CISTPL_EXT_BIT) &&
                (!(tp->flags & CISTPLF_MEM_ERR)));

            /*
             * Check to see if we tried to read past the
             *  end of the tuple data; if we have,
             *  there's no point in trying to parse
             *  any more of the tuple.
             */
            if (tp->flags & CISTPLF_MEM_ERR)
            return (HANDTPL_ERROR);
        } /* if (CISTPL_CFTABLE_TPCE_FS_MISCM) */

        /*
         * Check for and parse any additional subtuple
         *  information. We know that there is
         *  additional information if we haven't
         *  reached the end of the tuple data area
         *  and if the additional information is
         *  in standard tuple format.
         * If we don't recognize the additional info,
         *  then just silently ignore it, don't
         *  flag it as an error.
         */
#ifdef  PARSE_STCE_TUPLES
        if (GET_LEN(tp) > 0) {

        ce->flags |= CISTPL_CFTABLE_TPCE_FS_STCE_EV
        ce->flags |= CISTPL_CFTABLE_TPCE_FS_STCE_PD
#endif

    } /* if (HANDTPL_PARSE_LTUPLE) */

    return (CISTPLF_NOERROR);
}

/*
 * cistpl_pd_parse - read and parse a power description structure
 *
 *  cisdata_t **ddp - pointer to pointer tuple data area
 *  cistpl_cftable_entry_pwr_t *pd - pointer to local power description
 *                  structure
 */
static void
cistpl_pd_parse(cistpl_t *tp, cistpl_cftable_entry_pwr_t *pd)
{
    cisdata_t pdesc;

    pdesc = GET_BYTE(tp);   /* power description selector */

    /* nominal supply voltage */
    if (pdesc & CISTPL_CFTABLE_PD_NOMV) {
        pd->nomV = cistpl_expd_parse(tp, &pd->nomV_flags) / 100;
        pd->nomV_flags |= (pdesc | CISTPL_CFTABLE_PD_EXISTS);
    }

    /* minimum supply voltage */
    if (pdesc & CISTPL_CFTABLE_PD_MINV) {
        pd->minV = cistpl_expd_parse(tp, &pd->minV_flags) / 100;
        pd->minV_flags |= (pdesc | CISTPL_CFTABLE_PD_EXISTS);
    }

    /* maximum supply voltage */
    if (pdesc & CISTPL_CFTABLE_PD_MAXV) {
        pd->maxV = cistpl_expd_parse(tp, &pd->maxV_flags) / 100;
        pd->maxV_flags |= (pdesc | CISTPL_CFTABLE_PD_EXISTS);
    }

    /* continuous supply current */
    if (pdesc & CISTPL_CFTABLE_PD_STATICI) {
        pd->staticI_flags |= CISTPL_CFTABLE_PD_MUL10;
        pd->staticI = cistpl_expd_parse(tp, &pd->staticI_flags);
        pd->staticI_flags |= (pdesc | CISTPL_CFTABLE_PD_EXISTS);
    }

    /* maximum current required averaged over 1 second */
    if (pdesc & CISTPL_CFTABLE_PD_AVGI) {
        pd->avgI_flags |= CISTPL_CFTABLE_PD_MUL10;
        pd->avgI = cistpl_expd_parse(tp, &pd->avgI_flags);
        pd->avgI_flags |= (pdesc | CISTPL_CFTABLE_PD_EXISTS);
    }

    /* maximum current required averaged over 10mS */
    if (pdesc & CISTPL_CFTABLE_PD_PEAKI) {
        pd->peakI_flags |= CISTPL_CFTABLE_PD_MUL10;
        pd->peakI = cistpl_expd_parse(tp, &pd->peakI_flags);
        pd->peakI_flags |= (pdesc | CISTPL_CFTABLE_PD_EXISTS);
    }

    /* power down supply curent required */
    if (pdesc & CISTPL_CFTABLE_PD_PDOWNI) {
        pd->pdownI_flags |= CISTPL_CFTABLE_PD_MUL10;
        pd->pdownI = cistpl_expd_parse(tp, &pd->pdownI_flags);
        pd->pdownI_flags |= (pdesc | CISTPL_CFTABLE_PD_EXISTS);
    }
}

/*
 * cistpl_expd_parse - read and parse an extended power description structure
 *
 *  cistpl_t *tp - pointer to pointer tuple data area
 *  int *flags - flags that get for this parameter:
 *          CISTPL_CFTABLE_PD_NC_SLEEP - no connection on
 *                          sleep/power down
 *          CISTPL_CFTABLE_PD_ZERO - zero value required
 *          CISTPL_CFTABLE_PD_NC - no connection ever
 *
 * The power consumption is returned in the following units:
 *
 *              voltage - milliVOLTS
 *              current - microAMPS
 */
extern cistpl_pd_struct_t cistpl_pd_struct;

uint32_t
cistpl_expd_parse(cistpl_t *tp, uint32_t *flags)
{
    cisdata_t pdesc;
    uint32_t exponent, mantisa, val, digits = 0;

    /*
     * Get the power description parameter byte and break it up
     *  into mantissa and exponent.
     */
    pdesc = GET_BYTE(tp);
    exponent = pdesc&7;
    mantisa = (pdesc>>3)&0x0f;

    if (pdesc & CISTPL_EXT_BIT) {
        do {
            if (LOOK_BYTE(tp) <= 0x63)
                digits = LOOK_BYTE(tp);
            if (LOOK_BYTE(tp) == CISTPL_CFTABLE_PD_NC_SLEEPM)
                *flags |= CISTPL_CFTABLE_PD_NC_SLEEP;
            if (LOOK_BYTE(tp) == CISTPL_CFTABLE_PD_ZEROM)
                *flags |= CISTPL_CFTABLE_PD_ZERO;
            if (LOOK_BYTE(tp) == CISTPL_CFTABLE_PD_NCM)
                *flags |= CISTPL_CFTABLE_PD_NC;
        } while (GET_BYTE(tp) & CISTPL_EXT_BIT);
    }

    val = CISTPL_PD_MAN(mantisa) * CISTPL_PD_EXP(exponent);

    /*
     * If we have to multiply the power value by ten, then just
     *  don't bother dividing.
     */
    if (! (*flags & CISTPL_CFTABLE_PD_MUL10))
        val = val/10;   /* do this since our mantissa table is X 10 */

    /*
     * If we need to add some digits to the right of the decimal, do
     *  that here.
     */
    if (exponent)
        val = val + (digits * CISTPL_PD_EXP(exponent-1));

    val /= 1000;

    return (val);
}

/*
 * cistpl_devspeed - returns device speed in nS
 *
 *  cistpl_t *tp - tuple pointer.
 *  cisdata_t spindex - device speed table index
 *  int flags - operation flags
 *      CISTPL_DEVSPEED_TABLE:
 *          Use the spindex argument as an index into a simple
 *          device speed table. ref: PCMCIA Release 2.01
 *          Card Metaformat pg. 5-14 table 5-12.
 *          When this flag is set, the spindex argument is ignored.
 *      CISTPL_DEVSPEED_EXT:
 *          Use the tp argument to access the
 *          tuple data area containing an extended speed
 *          code table.  ref: PCMCIA Release 2.01 Card
 *          Metaformat pg. 5-15 table 5-13.
 *          The tp->read argument must point to the first byte of
 *          an extended speed code table.
 *          When this flag is set, the spindex argument is
 *          used as a power-of-10 scale factor.  We only allow
 *          a maximum scale factor of 10^16.
 *
 * The device speed is returned in nS for all combinations of flags and
 *  speed table entries.
 *
 * Note if you pass the CISTPL_DEVSPEED_TABLE with a spindex index that
 *  refers to an extended speed table, you will get back an undefined
 *  speed value.
 */
extern cistpl_devspeed_struct_t cistpl_devspeed_struct;

uint32_t
cistpl_devspeed(cistpl_t *tp, cisdata_t spindex, uint32_t flags)
{
    int scale = 1, first;
    cisdata_t exspeed;
    int exponent, mantisa;
    uint32_t speed;

    switch (flags) {
    case CISTPL_DEVSPEED_TABLE:
        speed = CISTPL_DEVSPEED_TBL(spindex);
        break;
    case CISTPL_DEVSPEED_EXT:
        do {
            exspeed = GET_BYTE(tp);
            first = 1;
            if (first) {
                /*
                 * XXX - ugh! we don't understand additional
                 *  exspeed bytes
                 */
                first = 0;
                exponent = (exspeed & 0x07);
                mantisa = (exspeed >> 3) & 0x0f;
                spindex &= 0x0f;    /* only allow 10^16 */
                while (spindex--)
                    scale *= 10;
            } /* if (first) */
        } while (exspeed & CISTPL_EXT_BIT);
        speed = scale * CISTPL_DEVSPEED_MAN(mantisa) *
                        CISTPL_DEVSPEED_EXP(exponent);
        speed = speed/10;   /* XXX - mantissa table is all X 10 */
        break;
    default:
        break;
    }

    return (speed);
}

/*
 * cistpl_vers_2_handler - handler for the CISTPL_VERS_2 tuple
 *
 *  void *arg - points to a XXX where the information is stuffed into
 */
uint32_t
cistpl_vers_2_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_vers_2_t *cs = (cistpl_vers_2_t *)arg;

        RESET_TP(tp);

        cs->vers = GET_BYTE(tp);
        cs->comply = GET_BYTE(tp);
        cs->dindex = GET_SHORT(tp);

        cs->reserved = GET_SHORT(tp);

        cs->vspec8 = GET_BYTE(tp);
        cs->vspec9 = GET_BYTE(tp);
        cs->nhdr = GET_BYTE(tp);

        (void) strcpy(cs->oem, cis_getstr(tp));

        if (GET_LEN(tp) > 0)
            (void) strcpy(cs->info, cis_getstr(tp));
        else
            (void) strcpy(cs->info, "(no info)");
    }

    return (CISTPLF_NOERROR);
}

/*
 * cistpl_jedec_handler - handler for JEDEC C and JEDEC A tuples
 *
 *  void *arg - points to a XXX where the information is stuffed into
 */
uint32_t
cistpl_jedec_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        int nid;
        cistpl_jedec_t *cs = (cistpl_jedec_t *)arg;

        RESET_TP(tp);

        for (nid = 0; GET_LEN(tp) > 0 &&
                    nid < CISTPL_JEDEC_MAX_IDENTIFIERS &&
                    LOOK_BYTE(tp) != 0xFF; nid++) {
            cs->jid[nid].id = GET_BYTE(tp);
            cs->jid[nid].info = GET_BYTE(tp);
        }
        cs->nid = nid;
    }

    return (CISTPLF_NOERROR);
}

/*
 * cistpl_format_handler - handler for the CISTPL_FORMAT and
 *              CISTPL_FORMAT_A tuples
 */
uint32_t
cistpl_format_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_format_t *cs = (cistpl_format_t *)arg;

        RESET_TP(tp);

        cs->type = GET_BYTE(tp);
        cs->edc_length = LOOK_BYTE(tp) & EDC_LENGTH_MASK;
        cs->edc_type = ((uint32_t)GET_BYTE(tp) >> EDC_TYPE_SHIFT) &
                                EDC_TYPE_MASK;
        cs->offset = GET_LONG(tp);
        cs->nbytes = GET_LONG(tp);

        switch (cs->type) {
        case TPLFMTTYPE_DISK:
            cs->dev.disk.bksize = GET_SHORT(tp);
            cs->dev.disk.nblocks = GET_LONG(tp);
            cs->dev.disk.edcloc = GET_LONG(tp);
            break;

        case TPLFMTTYPE_MEM:
            cs->dev.mem.flags = GET_BYTE(tp);
            cs->dev.mem.reserved = GET_BYTE(tp);
            cs->dev.mem.address = (caddr_t)(uintptr_t)GET_LONG(tp);
            cs->dev.disk.edcloc = GET_LONG(tp);
            break;
        default:
            /* don't know about any other type */
            break;
        }
    }

    return (CISTPLF_NOERROR);
}

/*
 * cistpl_geometry_handler - handler for the CISTPL_GEOMETRY tuple
 *
 *  void *arg - points to a XXX where the information is stuffed into
 */
uint32_t
cistpl_geometry_handler(cistpl_callout_t *co, cistpl_t *tp, uint32_t flags,
                                void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_geometry_t *cs = (cistpl_geometry_t *)arg;

        RESET_TP(tp);
        cs->spt = GET_BYTE(tp);
        cs->tpc = GET_BYTE(tp);
        cs->ncyl = GET_SHORT(tp);
    }
    return (CISTPLF_NOERROR);
}

/*
 * cistpl_byteorder_handler - handler for the CISTPL_BYTEORDER tuple
 *
 *  void *arg - points to a XXX where the information is stuffed into
 */
uint32_t
cistpl_byteorder_handler(cistpl_callout_t *co, cistpl_t *tp, uint32_t flags,
                                void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_byteorder_t *cs = (cistpl_byteorder_t *)arg;

        RESET_TP(tp);
        cs->order = GET_BYTE(tp);
        cs->map = GET_BYTE(tp);
    }
    return (CISTPLF_NOERROR);
}

/*
 * cistpl_date_handler - handler for CISTPL_DATE card format tuple
 *
 *  void *arg - points to a cistpl_date_t * where the
 *          information is stuffed into
 */
uint32_t
cistpl_date_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_date_t *cs = (cistpl_date_t *)arg;

        RESET_TP(tp);
        cs->time = GET_SHORT(tp);
        cs->day = GET_SHORT(tp);
    }
    return (CISTPLF_NOERROR);
}

/*
 * cistpl_battery_handler - handler for CISTPL_BATTERY battery replacement
 *              date tuple
 *
 *  void *arg - points to a cistpl_battery_t * where the
 *          information is stuffed into
 */
uint32_t
cistpl_battery_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_battery_t *cs = (cistpl_battery_t *)arg;

        RESET_TP(tp);
        cs->rday = GET_SHORT(tp);
        cs->xday = GET_SHORT(tp);
    }
    return (CISTPLF_NOERROR);
}

/*
 * cistpl_org_handler - handler for CISTPL_ORG data organization tuple
 *
 *  void *arg - points to a cistpl_org_t * where the
 *          information is stuffed into
 */
uint32_t
cistpl_org_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_org_t *cs = (cistpl_org_t *)arg;

        RESET_TP(tp);
        cs->type = GET_BYTE(tp);

        (void) strcpy(cs->desc, cis_getstr(tp));
    }

    return (CISTPLF_NOERROR);
}


/*
 * cistpl_manfid_handler - handler for CISTPL_MANFID, the manufacturer ID tuple
 *
 *  void *arg - points to a XXX where the information is stuffed into
 */
uint32_t
cistpl_manfid_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_manfid_t *cs = (cistpl_manfid_t *)arg;

        RESET_TP(tp);
        cs->manf = GET_SHORT(tp);
        cs->card = GET_SHORT(tp);
    }
    return (CISTPLF_NOERROR);
}

/*
 * cistpl_funcid_handler - handler for CISTPL_FUNCID
 *
 *  void *arg - points to a XXX where the information is stuffed into
 */
uint32_t
cistpl_funcid_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_funcid_t *cs = (cistpl_funcid_t *)arg;

        RESET_TP(tp);

        cs->function = GET_BYTE(tp);
        cs->sysinit = GET_BYTE(tp);
    }
    return (CISTPLF_NOERROR);
}


/*
 * cistpl_funce_serial_handler - handler for the CISTPL_FUNCE/SERIAL tuple
 *
 *  void *arg - points to a XXX where the information is stuffed into
 */
uint32_t
cistpl_funce_serial_handler(cistpl_callout_t *co, cistpl_t *tp,
                        uint32_t flags, void *arg)
{
    int subfunction;

    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        cistpl_funce_t *cs = (cistpl_funce_t *)arg;

        RESET_TP(tp);

        cs->function = TPLFUNC_SERIAL;
        cs->subfunction = subfunction = GET_BYTE(tp);
        switch (subfunction & 0xF) {
        case TPLFE_SUB_SERIAL:
        case TPLFE_CAP_SERIAL_DATA:
        case TPLFE_CAP_SERIAL_FAX:
        case TPLFE_CAP_SERIAL_VOICE:
            cs->data.serial.ua = GET_BYTE(tp);
            cs->data.serial.uc = GET_SHORT(tp);
            break;
        case TPLFE_SUB_MODEM_COMMON:
        case TPLFE_CAP_MODEM_DATA:
        case TPLFE_CAP_MODEM_FAX:
        case TPLFE_CAP_MODEM_VOICE:
            cs->data.modem.fc = GET_BYTE(tp);
            cs->data.modem.cb = (GET_BYTE(tp) + 1) * 4;
            cs->data.modem.eb = GET_INT24(tp);
            cs->data.modem.tb = GET_INT24(tp);
            break;
        case TPLFE_SUB_MODEM_DATA:
            cs->data.data_modem.ud = GET_BE_SHORT(tp) * 75;
            cs->data.data_modem.ms = GET_SHORT(tp);
            cs->data.data_modem.em = GET_BYTE(tp);
            cs->data.data_modem.dc = GET_BYTE(tp);
            cs->data.data_modem.cm = GET_BYTE(tp);
            cs->data.data_modem.ex = GET_BYTE(tp);
            cs->data.data_modem.dy = GET_BYTE(tp);
            cs->data.data_modem.ef = GET_BYTE(tp);
            for (cs->data.data_modem.ncd = 0;
                GET_LEN(tp) > 0 && cs->data.data_modem.ncd < 16;
                        cs->data.data_modem.ncd++)
                if (LOOK_BYTE(tp) != 255) {
                    cs->data.data_modem.cd[
                        cs->data.data_modem.ncd] =
                                GET_BYTE(tp);
                } else {
                    GET_BYTE(tp);
                    break;
                }
            break;
        case TPLFE_SUB_MODEM_FAX:
            cs->data.fax.uf = GET_BE_SHORT(tp) * 75;
            cs->data.fax.fm = GET_BYTE(tp);
            cs->data.fax.fy = GET_BYTE(tp);
            cs->data.fax.fs = GET_SHORT(tp);
            for (cs->data.fax.ncf = 0;
                GET_LEN(tp) > 0 && cs->data.fax.ncf < 16;
                            cs->data.fax.ncf++)
                if (LOOK_BYTE(tp) != 255) {
                    cs->data.fax.cf[cs->data.fax.ncf] =
                                GET_BYTE(tp);
                } else {
                    GET_BYTE(tp);
                    break;
                }
            break;
        case TPLFE_SUB_VOICE:
            cs->data.voice.uv = GET_BE_SHORT(tp) * 75;
            for (cs->data.voice.nsr = 0; LOOK_BYTE(tp) != 0 &&
                GET_LEN(tp) >= 2;
                        cs->data.voice.nsr++) {
                cs->data.voice.sr[cs->data.voice.nsr] =
                    GET_BYTE(tp) * 1000;
                cs->data.voice.sr[cs->data.voice.nsr] +=
                    GET_BYTE(tp) * 100;
            }
            for (cs->data.voice.nss = 0; LOOK_BYTE(tp) != 0 &&
                GET_LEN(tp) >= 2;
                        cs->data.voice.nss++) {
                cs->data.voice.ss[cs->data.voice.nss] =
                    GET_BYTE(tp) * 10;
                cs->data.voice.ss[cs->data.voice.nss] +=
                                GET_BYTE(tp);
            }
            for (cs->data.voice.nsc = 0; LOOK_BYTE(tp) != 0 &&
                GET_LEN(tp) >= 1;
                        cs->data.voice.nsc++) {
                cs->data.voice.sc[cs->data.voice.nsc] =
                                GET_BYTE(tp);
            }
            break;
        default:
            break;
        }
    }
    return (CISTPLF_NOERROR);
}

/*
 * cistpl_funce_lan_handler - handler for the CISTPL_FUNCE/LAN tuple
 *
 *  void *arg - points to a XXX where the information is stuffed into
 */
uint32_t
cistpl_funce_lan_handler(cistpl_callout_t *co, cistpl_t *tp, uint32_t flags,
                                void *arg)
{
    int subfunction;

    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * We don't currently validate this tuple. This call will
     *  always set tp->flags |= CISTPLF_VALID.
     */
    if (flags & HANDTPL_COPY_DONE)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    if (flags & HANDTPL_PARSE_LTUPLE) {
        int i;
        cistpl_funce_t *cs = (cistpl_funce_t *)arg;

        RESET_TP(tp);

        cs->function = TPLFUNC_LAN;
        cs->subfunction = subfunction = GET_BYTE(tp);

        switch (subfunction) {
        case TPLFE_NETWORK_INFO:
            cs->data.lan.tech = GET_BYTE(tp);
            cs->data.lan.speed = GET_BYTE(tp);
            i = GET_BYTE(tp);
            if (i < 24) {
                cs->data.lan.speed <<= i;
            } else {
                /*
                 * if speed is too large a value
                 * to hold in a uint32 flag it and
                 * store as [mantissa][exponent]
                 * in least significant 16 bits
                 */
                cs->data.lan.speed = 0x80000000 |
                    (cs->data.lan.speed << 8) | i;
            }
            cs->data.lan.media = GET_BYTE(tp);
            cs->data.lan.con = GET_BYTE(tp);
            cs->data.lan.id_sz = GET_BYTE(tp);
            if (cs->data.lan.id_sz <= 16) {
                for (i = 0; i < cs->data.lan.id_sz; i++)
                    cs->data.lan.id[i] = GET_BYTE(tp);
            }
            break;
        default:
                /* unknown LAN tuple type */
            return (CISTPLF_UNKNOWN);
        }
    }
    return (CISTPLF_NOERROR);
}

/*
 * cistpl_linktarget_handler - handler for CISTPL_LINKTARGET tuple
 *
 *  void *arg - points to a cistpl_linktarget_t * where the
 *          information is stuffed into
 *
 *  If HANDTPL_COPY_DONE is set, we just validate the tuple but
 *      do not return any values.
 *  If HANDTPL_PARSE_LTUPLE is set, we validate the tuple and
 *      return the parsed tuple data if the tuple is valid.
 *
 *  If the tuple link field is invalid, the CISTPLF_LINK_INVALID flag
 *      will be set in the tp->flags field and HANDTPL_ERROR
 *      will be returned.
 *
 *  If the tuple data body is invalid, the CISTPLF_PARAMS_INVALID flag
 *      will be set in the tp->flags field and HANDTPL_ERROR
 *      will be returned.
 *
 *  The tuple is considered invalid if it's link field is less than
 *      MIN_LINKTARGET_LENGTH or if the data body of the tuple
 *      does not contain the pattern CISTPL_LINKTARGET_MAGIC.
 *
 * XXX At some point we should revisit this to see if we can call
 *  cis_validate_longlink_acm instead of doing the validation
 *  in both places.
 */
uint32_t
cistpl_linktarget_handler(cistpl_callout_t *co, cistpl_t *tp, uint32_t flags,
                                void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * Validate the tuple for both the HANDTPL_COPY_DONE case and
     *  the HANDTPL_PARSE_LTUPLE case. Only return data in
     *  the HANDTPL_PARSE_LTUPLE case.
     */
    if (flags & (HANDTPL_COPY_DONE | HANDTPL_PARSE_LTUPLE)) {
        uchar_t *cp;
        cisdata_t tl;

        if ((tl = tp->len) >= (cisdata_t)MIN_LINKTARGET_LENGTH) {
            cisdata_t *ltm = (cisdata_t *)CISTPL_LINKTARGET_MAGIC;
            int i;

            RESET_TP(tp);

            /*
             * Save the start address of this string in case
             *  the tuple turns out to be OK since we
             *  need to pass this address to the caller.
             */
            cp = GET_BYTE_ADDR(tp);

            /*
             * Check each byte of the tuple body to see if it
             *  matches what should be in a valid tuple.
             *  Note that we can't assume that this magic
             *  pattern is a string and we also only need
             *  to be sure that MIN_LINKTARGET_LENGTH bytes
             *  match; all bytes following this magic number
             *  in this tuple are ignored.
             */
            for (i = 0; i < MIN_LINKTARGET_LENGTH; i++) {
                if (GET_BYTE(tp) != *ltm++) {
                    tp->flags |= CISTPLF_PARAMS_INVALID;
                    return (HANDTPL_ERROR);
                }
            } /* MIN_LINKTARGET_LENGTH */

            /*
             * This tuple is valid.
             */
            if (flags & HANDTPL_COPY_DONE)
                tp->flags |= CISTPLF_VALID;

            /*
             * If we're also parsing this tuple, then
             *  setup the return values.
             */
            if (flags & HANDTPL_PARSE_LTUPLE) {
                cistpl_linktarget_t *cs =
                        (cistpl_linktarget_t *)arg;

                cs->length = tl;
                (void) strncpy(cs->tpltg_tag, (char *)cp,
                                cs->length);
                cs->tpltg_tag[cs->length] = NULL;

            } /* HANDTPL_PARSE_LTUPLE */

        } else {

            tp->flags |= CISTPLF_LINK_INVALID;
            return (HANDTPL_ERROR);

        } /* CISTPL_LINKTARGET */

    } /* (HANDTPL_COPY_DONE | HANDTPL_PARSE_LTUPLE) */

    return (CISTPLF_NOERROR);
}

/*
 * cistpl_longlink_ac_handler - handler for CISTPL_LONGLINK_A and
 *              CISTPL_LONGLINK_C tuples
 *
 *  void *arg - points to a cistpl_longlink_ac_t * where the
 *          information is stuffed into
 *
 *  If the passed in tuple is CISTPL_LONGLINK_A the CISTPL_LONGLINK_AC_AM
 *      flag in cistpl_longlink_ac_t->flags is set.
 *  If the passed in tuple is CISTPL_LONGLINK_C the CISTPL_LONGLINK_AC_CM
 *      flag in cistpl_longlink_ac_t->flags is set.
 *
 *  If HANDTPL_COPY_DONE is set, we just validate the tuple but
 *      do not return any values.
 *  If HANDTPL_PARSE_LTUPLE is set, we validate the tuple and
 *      return the parsed tuple data if the tuple is valid.
 *
 *  If the tuple link field is invalid, the CISTPLF_LINK_INVALID flag
 *      will be set in the tp->flags field and HANDTPL_ERROR
 *      will be returned.
 *
 *  The tuple is considered invalid if it's link field is less than
 *      MIN_LONGLINK_AC_LENGTH.
 */
uint32_t
cistpl_longlink_ac_handler(cistpl_callout_t *co, cistpl_t *tp, uint32_t flags,
                                void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * Validate the tuple for both the HANDTPL_COPY_DONE case and
     *  the HANDTPL_PARSE_LTUPLE case. Only return data in
     *  the HANDTPL_PARSE_LTUPLE case.
     */
    if (flags & (HANDTPL_COPY_DONE | HANDTPL_PARSE_LTUPLE)) {

        if (tp->len >= (cisdata_t)MIN_LONGLINK_AC_LENGTH) {

            /*
             * This tuple is valid.
             */
            if (flags & HANDTPL_COPY_DONE)
                tp->flags |= CISTPLF_VALID;

            if (flags & HANDTPL_PARSE_LTUPLE) {
                cistpl_longlink_ac_t *cs =
                        (cistpl_longlink_ac_t *)arg;

                switch (tp->type) {
                    case CISTPL_LONGLINK_A:
                    cs->flags = CISTPL_LONGLINK_AC_AM;
                    break;

                    case CISTPL_LONGLINK_C:
                    cs->flags = CISTPL_LONGLINK_AC_CM;
                    break;
                    default:
                    break;
                } /* switch */

                RESET_TP(tp);

                cs->tpll_addr = GET_LONG(tp);

            } /* HANDTPL_PARSE_LTUPLE */

        } else {
            tp->flags |= CISTPLF_LINK_INVALID;
            return (HANDTPL_ERROR);
        } /* MIN_LONGLINK_AC_LENGTH */

    } /* (HANDTPL_COPY_DONE | HANDTPL_PARSE_LTUPLE) */

    return (CISTPLF_NOERROR);
}

/*
 * cistpl_longlink_mfc_handler - handler for CISTPL_LONGLINK_MFC tuples
 *
 *  void *arg - points to a cistpl_longlink_mfc_t * where the
 *          information is stuffed into
 *
 *  If HANDTPL_COPY_DONE is set, we just validate the tuple but
 *      do not return any values.
 *  If HANDTPL_PARSE_LTUPLE is set, we validate the tuple and
 *      return the parsed tuple data if the tuple is valid.
 *
 *  If the tuple link field is invalid, the CISTPLF_LINK_INVALID flag
 *      will be set in the tp->flags field and HANDTPL_ERROR
 *      will be returned.
 *
 *  If the number of register sets is invalid, the CISTPLF_PARAMS_INVALID
 *      flag be set in the tp->flags field and HANDTPL_ERROR will be
 *      returned.
 *
 *  The tuple is considered invalid if it's link field is less than
 *      MIN_LONGLINK_MFC_LENGTH or if the number of register sets
 *      is not in the range [MIN_LONGLINK_MFC_NREGS..CIS_MAX_FUNCTIONS]
 */
uint32_t
cistpl_longlink_mfc_handler(cistpl_callout_t *co, cistpl_t *tp,
                    uint32_t flags, void *arg)
{
    /*
     * nothing special about our flags, so just call the
     *  generic handler for this
     */
    if (flags & HANDTPL_SET_FLAGS)
        return (cis_no_tuple_handler(co, tp, flags, arg));

    /*
     * Validate the tuple for both the HANDTPL_COPY_DONE case and
     *  the HANDTPL_PARSE_LTUPLE case. Only return data in
     *  the HANDTPL_PARSE_LTUPLE case.
     */
    if (flags & (HANDTPL_COPY_DONE | HANDTPL_PARSE_LTUPLE)) {

        if (tp->len >= (cisdata_t)MIN_LONGLINK_MFC_LENGTH) {

            /*
             * This tuple is valid.
             */
            if (flags & HANDTPL_COPY_DONE)
                tp->flags |= CISTPLF_VALID;

            if (flags & HANDTPL_PARSE_LTUPLE) {
                cistpl_longlink_mfc_t *cs =
                        (cistpl_longlink_mfc_t *)arg;
                int fn;

                RESET_TP(tp);

                /*
                 * Get the number of register sets described
                 *  by this tuple. The number of register
                 *  sets must be greter than or equal to
                 *  MIN_LONGLINK_MFC_NREGS and less than
                 *  CIS_MAX_FUNCTIONS.
                 * Note that the number of functions is equal
                 *  to the number of register sets.
                 */
                cs->nregs = GET_BYTE(tp);
                cs->nfuncs = cs->nregs;

                if ((cs->nregs < MIN_LONGLINK_MFC_NREGS) ||
                    (cs->nregs > CIS_MAX_FUNCTIONS)) {
                    tp->flags |= CISTPLF_PARAMS_INVALID;
                    return (HANDTPL_ERROR);
                }

                /*
                 * Cycle through each function and setup
                 *  the appropriate parameter values.
                 */
                for (fn = 0; fn < cs->nregs; fn++) {
                    cs->function[fn].tas = GET_BYTE(tp);
                    cs->function[fn].addr = GET_LONG(tp);
                } /* for (fn) */

            } /* HANDTPL_PARSE_LTUPLE */

        } else {
            tp->flags |= CISTPLF_LINK_INVALID;
            return (HANDTPL_ERROR);
        } /* MIN_LONGLINK_MFC_LENGTH */

    } /* (HANDTPL_COPY_DONE | HANDTPL_PARSE_LTUPLE) */

    return (CISTPLF_NOERROR);
}

/*
 * cis_validate_longlink_acm - Validates the secondary tuple chain pointed
 *              to by cisptr and specified by a previous
 *              CISTPL_LONGLINK_A, CISTPL_LONGLINK_C or
 *              CISTPL_LONGLINK_MFC tuple.
 *
 *  cisptr->offset must be the offset to the first byte in the secondary
 *      tuple chain to validate
 *  cisptr->flags must be setup to specify the correct address space
 *
 * The cisptr->offset member is not updated after this function returns.
 *
 *  BAD_CIS_ADDR is returned is the raw CIS data cound not be read.
 *  HANDTPL_ERROR is returned if the secondary tuple chain does not
 *      contain a valid CISTPL_LINKTARGET tuple.
 */
uint32_t
cis_validate_longlink_acm(cisptr_t *cisptr)
{
    uchar_t cb[MIN_LINKTARGET_LENGTH + LINKTARGET_AC_HEADER_LENGTH];
    cisptr_t t_cisptr, *cpt;
    int tl;

    /*
     * Since the NEXT_CIS_ADDR macro increments the cisptr_t->offset
     *  member, make a local copy of the cisptr and use the local
     *  copy to read data from the card.
     */
    cpt = &t_cisptr;
    bcopy((caddr_t)cisptr, (caddr_t)cpt, sizeof (cisptr_t));

    for (tl = 0; tl < MIN_LINKTARGET_LENGTH +
                    LINKTARGET_AC_HEADER_LENGTH; tl++) {

        cb[tl] = GET_CIS_DATA(cpt);
        if (!NEXT_CIS_ADDR(cpt))
            return ((uint32_t)BAD_CIS_ADDR);

    } /* for */

    if ((cb[0] == CISTPL_LINKTARGET) && (cb[1] >= MIN_LINKTARGET_LENGTH)) {
        cisdata_t *ltm = (cisdata_t *)CISTPL_LINKTARGET_MAGIC;

        for (tl = 0; tl < MIN_LINKTARGET_LENGTH; tl++, ltm++) {
            if (cb[tl + LINKTARGET_AC_HEADER_LENGTH] != *ltm)
                return (HANDTPL_ERROR);
        }
        return (CISTPLF_NOERROR);

    } /* if */

    return (HANDTPL_ERROR);
}

/*
 * cis_getstr (tp)
 *  we want the address of the first character returned
 *  but need to skip past the string in the cistpl_t structure
 */
char *
cis_getstr(cistpl_t *tp)
{
    uchar_t *cp, *cpp;
    uchar_t x;

    cp = tp->read.byte;
    cpp = cp;

    while ((x = LOOK_BYTE(tp)) != 0 && x != 0xff) {
        x = GET_BYTE(tp);
    }

    (void) GET_BYTE(tp);    /* get past that last byte */

    while ((*cpp != 0) && (*cpp != 0xff))
        cpp++;

    *cpp = NULL;

    return ((char *)cp);
}

/*
 * cis_return_name - returns name of tuple
 *
 *    calling:  co - pointer to cistpl_callout_t entry that contains
 *          tuple name to return
 *      gtn - pointer to cistpl_get_tuple_name_t to return
 *          name into
 */
static void
cis_return_name(cistpl_callout_t *co, cistpl_get_tuple_name_t *gtn)
{
    (void) strncpy(gtn->name, co->text, CIS_MAX_TUPLE_NAME_LEN);
    gtn->name[CIS_MAX_TUPLE_NAME_LEN - 1] = NULL;
}

/*
 * cis_malloc/cis_free
 *  wrappers around kmem_alloc()/kmem_free() that
 *  provide malloc/free style usage
 */

caddr_t
cis_malloc(size_t len)
{
    caddr_t addr;

    addr = kmem_zalloc(len + sizeof (size_t), KM_SLEEP);
    *(size_t *)addr = len + sizeof (size_t);
    addr += sizeof (size_t);
    return (addr);
}

void
cis_free(caddr_t addr)
{
    size_t len;
    addr -= sizeof (size_t);
    len = *(size_t *)addr;
    kmem_free(addr, len);
}