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mhzc.c revision 1.40.16.1
      1 /*	$NetBSD: mhzc.c,v 1.40.16.1 2008/04/03 12:42:54 mjf Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999, 2000, 2004 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9  * NASA Ames Research Center, and by Charles M. Hannum.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the NetBSD
     22  *	Foundation, Inc. and its contributors.
     23  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  *    contributors may be used to endorse or promote products derived
     25  *    from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 /*
     41  * Device driver for the Megaherz X-JACK Ethernet/Modem combo cards.
     42  *
     43  * Many thanks to Chuck Cranor for having the patience to sift through
     44  * the Linux smc91c92_cs.c driver to find the magic details to get this
     45  * working!
     46  */
     47 
     48 #include <sys/cdefs.h>
     49 __KERNEL_RCSID(0, "$NetBSD: mhzc.c,v 1.40.16.1 2008/04/03 12:42:54 mjf Exp $");
     50 
     51 #include "opt_inet.h"
     52 #include "bpfilter.h"
     53 
     54 #include <sys/param.h>
     55 #include <sys/systm.h>
     56 #include <sys/mbuf.h>
     57 #include <sys/socket.h>
     58 #include <sys/ioctl.h>
     59 #include <sys/errno.h>
     60 #include <sys/syslog.h>
     61 #include <sys/select.h>
     62 #include <sys/tty.h>
     63 #include <sys/device.h>
     64 #include <sys/kernel.h>
     65 #include <sys/proc.h>
     66 
     67 #include <net/if.h>
     68 #include <net/if_dl.h>
     69 #include <net/if_ether.h>
     70 #include <net/if_media.h>
     71 
     72 #ifdef INET
     73 #include <netinet/in.h>
     74 #include <netinet/in_systm.h>
     75 #include <netinet/in_var.h>
     76 #include <netinet/ip.h>
     77 #include <netinet/if_inarp.h>
     78 #endif
     79 
     80 
     81 #if NBPFILTER > 0
     82 #include <net/bpf.h>
     83 #include <net/bpfdesc.h>
     84 #endif
     85 
     86 #include <sys/intr.h>
     87 #include <sys/bus.h>
     88 
     89 #include <dev/ic/comreg.h>
     90 #include <dev/ic/comvar.h>
     91 
     92 #include <dev/mii/mii.h>
     93 #include <dev/mii/miivar.h>
     94 
     95 #include <dev/ic/smc91cxxreg.h>
     96 #include <dev/ic/smc91cxxvar.h>
     97 
     98 #include <dev/pcmcia/pcmciareg.h>
     99 #include <dev/pcmcia/pcmciavar.h>
    100 #include <dev/pcmcia/pcmciadevs.h>
    101 
    102 #include "mhzc.h"
    103 
    104 struct mhzc_softc {
    105 	struct device sc_dev;		/* generic device glue */
    106 
    107 	struct pcmcia_function *sc_pf;	/* our PCMCIA function */
    108 	void *sc_ih;			/* interrupt handle */
    109 
    110 	const struct mhzc_product *sc_product;
    111 
    112 	/*
    113 	 * Data for the Modem portion.
    114 	 */
    115 	struct device *sc_modem;
    116 	struct pcmcia_io_handle sc_modem_pcioh;
    117 	int sc_modem_io_window;
    118 
    119 	/*
    120 	 * Data for the Ethernet portion.
    121 	 */
    122 	struct device *sc_ethernet;
    123 	struct pcmcia_io_handle sc_ethernet_pcioh;
    124 	int sc_ethernet_io_window;
    125 
    126 	int sc_flags;
    127 };
    128 
    129 /* sc_flags */
    130 #define	MHZC_MODEM_MAPPED	0x01
    131 #define	MHZC_ETHERNET_MAPPED	0x02
    132 #define	MHZC_MODEM_ENABLED	0x04
    133 #define	MHZC_ETHERNET_ENABLED	0x08
    134 #define	MHZC_MODEM_ALLOCED	0x10
    135 #define	MHZC_ETHERNET_ALLOCED	0x20
    136 
    137 int	mhzc_match(struct device *, struct cfdata *, void *);
    138 void	mhzc_attach(struct device *, struct device *, void *);
    139 int	mhzc_detach(struct device *, int);
    140 int	mhzc_activate(struct device *, enum devact);
    141 
    142 CFATTACH_DECL(mhzc, sizeof(struct mhzc_softc),
    143     mhzc_match, mhzc_attach, mhzc_detach, mhzc_activate);
    144 
    145 int	mhzc_em3336_enaddr(struct mhzc_softc *, u_int8_t *);
    146 int	mhzc_em3336_enable(struct mhzc_softc *);
    147 
    148 const struct mhzc_product {
    149 	struct pcmcia_product mp_product;
    150 
    151 	/* Get the Ethernet address for this card. */
    152 	int		(*mp_enaddr)(struct mhzc_softc *, u_int8_t *);
    153 
    154 	/* Perform any special `enable' magic. */
    155 	int		(*mp_enable)(struct mhzc_softc *);
    156 } mhzc_products[] = {
    157 	{ { PCMCIA_VENDOR_MEGAHERTZ, PCMCIA_PRODUCT_MEGAHERTZ_EM3336,
    158 	    PCMCIA_CIS_INVALID },
    159 	  mhzc_em3336_enaddr,		mhzc_em3336_enable },
    160 };
    161 static const size_t mhzc_nproducts =
    162     sizeof(mhzc_products) / sizeof(mhzc_products[0]);
    163 
    164 int	mhzc_print(void *, const char *);
    165 
    166 int	mhzc_check_cfe(struct mhzc_softc *, struct pcmcia_config_entry *);
    167 int	mhzc_alloc_ethernet(struct mhzc_softc *, struct pcmcia_config_entry *);
    168 
    169 int	mhzc_enable(struct mhzc_softc *, int);
    170 void	mhzc_disable(struct mhzc_softc *, int);
    171 
    172 int	mhzc_intr(void *);
    173 
    174 int
    175 mhzc_match(struct device *parent, struct cfdata *match,
    176     void *aux)
    177 {
    178 	struct pcmcia_attach_args *pa = aux;
    179 
    180 	if (pcmcia_product_lookup(pa, mhzc_products, mhzc_nproducts,
    181 	    sizeof(mhzc_products[0]), NULL))
    182 		return (2);		/* beat `com' */
    183 	return (0);
    184 }
    185 
    186 void
    187 mhzc_attach(struct device *parent, struct device *self, void *aux)
    188 {
    189 	struct mhzc_softc *sc = (void *)self;
    190 	struct pcmcia_attach_args *pa = aux;
    191 	struct pcmcia_config_entry *cfe;
    192 	int error;
    193 
    194 	sc->sc_pf = pa->pf;
    195 
    196 	sc->sc_product = pcmcia_product_lookup(pa, mhzc_products,
    197 	    mhzc_nproducts, sizeof(mhzc_products[0]), NULL);
    198 	if (!sc->sc_product)
    199 		panic("mhzc_attach: impossible");
    200 
    201 	/*
    202 	 * The address decoders on these cards are wacky.  The configuration
    203 	 * entries are set up to look like serial ports, and have no
    204 	 * information about the Ethernet portion.  In order to talk to
    205 	 * the Modem portion, the I/O address must have bit 0x80 set.
    206 	 * In order to talk to the Ethernet portion, the I/O address must
    207 	 * have the 0x80 bit clear.
    208 	 *
    209 	 * The standard configuration entries conveniently have 0x80 set
    210 	 * in them, and have a length of 8 (a 16550's size, convenient!),
    211 	 * so we use those to set up the Modem portion.
    212 	 *
    213 	 * Once we have the Modem's address established, we search for
    214 	 * an address suitable for the Ethernet portion.  We do this by
    215 	 * rounding up to the next 16-byte aligned address where 0x80
    216 	 * isn't set (the SMC Ethernet chip has a 16-byte address size)
    217 	 * and attemping to allocate a 16-byte region until we succeed.
    218 	 *
    219 	 * Sure would have been nice if Megahertz had made the card a
    220 	 * proper multi-function device.
    221 	 */
    222 	SIMPLEQ_FOREACH(cfe, &pa->pf->cfe_head, cfe_list) {
    223 		if (mhzc_check_cfe(sc, cfe)) {
    224 			/* Found one! */
    225 			break;
    226 		}
    227 	}
    228 	if (cfe == NULL) {
    229 		aprint_error("%s: unable to find suitable config table entry\n",
    230 		    self->dv_xname);
    231 		goto fail;
    232 	}
    233 
    234 	if (mhzc_alloc_ethernet(sc, cfe) == 0) {
    235 		aprint_error("%s: unable to allocate space for Ethernet portion\n",
    236 		    self->dv_xname);
    237 		goto fail;
    238 	}
    239 
    240 	/* Enable the card. */
    241 	pcmcia_function_init(pa->pf, cfe);
    242 
    243 	if (pcmcia_io_map(sc->sc_pf, PCMCIA_WIDTH_IO8, &sc->sc_modem_pcioh,
    244 	    &sc->sc_modem_io_window)) {
    245 		aprint_error("%s: unable to map I/O space\n",
    246 		    sc->sc_dev.dv_xname);
    247 		goto fail;
    248 	}
    249 	sc->sc_flags |= MHZC_MODEM_MAPPED;
    250 
    251 	if (pcmcia_io_map(sc->sc_pf, PCMCIA_WIDTH_AUTO, &sc->sc_ethernet_pcioh,
    252 	    &sc->sc_ethernet_io_window)) {
    253 		aprint_error("%s: unable to map I/O space\n",
    254 		    sc->sc_dev.dv_xname);
    255 		goto fail;
    256 	}
    257 	sc->sc_flags |= MHZC_ETHERNET_MAPPED;
    258 
    259 	error = mhzc_enable(sc, MHZC_MODEM_ENABLED|MHZC_ETHERNET_ENABLED);
    260 	if (error)
    261 		goto fail;
    262 
    263 	/*XXXUNCONST*/
    264 	sc->sc_modem = config_found(self, __UNCONST("com"), mhzc_print);
    265 	/*XXXUNCONST*/
    266 	sc->sc_ethernet = config_found(self, __UNCONST("sm"), mhzc_print);
    267 
    268 	mhzc_disable(sc, MHZC_MODEM_ENABLED|MHZC_ETHERNET_ENABLED);
    269 	return;
    270 
    271 fail:
    272 	/* I/O spaces will be freed by detach. */
    273 	;
    274 }
    275 
    276 int
    277 mhzc_check_cfe(sc, cfe)
    278 	struct mhzc_softc *sc;
    279 	struct pcmcia_config_entry *cfe;
    280 {
    281 
    282 	if (cfe->num_memspace != 0)
    283 		return (0);
    284 
    285 	if (cfe->num_iospace != 1)
    286 		return (0);
    287 
    288 	if (pcmcia_io_alloc(sc->sc_pf,
    289 	    cfe->iospace[0].start,
    290 	    cfe->iospace[0].length,
    291 	    cfe->iospace[0].length,
    292 	    &sc->sc_modem_pcioh) == 0) {
    293 		/* Found one for the modem! */
    294 		sc->sc_flags |= MHZC_MODEM_ALLOCED;
    295 		return (1);
    296 	}
    297 
    298 	return (0);
    299 }
    300 
    301 int
    302 mhzc_alloc_ethernet(sc, cfe)
    303 	struct mhzc_softc *sc;
    304 	struct pcmcia_config_entry *cfe;
    305 {
    306 	bus_addr_t addr, maxaddr;
    307 
    308 	addr = cfe->iospace[0].start + cfe->iospace[0].length;
    309 	maxaddr = 0x1000;
    310 
    311 	/*
    312 	 * Now round it up so that it starts on a 16-byte boundary.
    313 	 */
    314 	addr = roundup(addr, 0x10);
    315 
    316 	for (; (addr + 0x10) < maxaddr; addr += 0x10) {
    317 		if (addr & 0x80)
    318 			continue;
    319 		if (pcmcia_io_alloc(sc->sc_pf, addr, 0x10, 0x10,
    320 		    &sc->sc_ethernet_pcioh) == 0) {
    321 			/* Found one for the ethernet! */
    322 			sc->sc_flags |= MHZC_ETHERNET_ALLOCED;
    323 			return (1);
    324 		}
    325 	}
    326 
    327 	return (0);
    328 }
    329 
    330 int
    331 mhzc_print(aux, pnp)
    332 	void *aux;
    333 	const char *pnp;
    334 {
    335 	const char *name = aux;
    336 
    337 	if (pnp)
    338 		aprint_normal("%s at %s(*)",  name, pnp);
    339 
    340 	return (UNCONF);
    341 }
    342 
    343 int
    344 mhzc_detach(self, flags)
    345 	struct device *self;
    346 	int flags;
    347 {
    348 	struct mhzc_softc *sc = (void *)self;
    349 	int rv;
    350 
    351 	if (sc->sc_ethernet != NULL) {
    352 		rv = config_detach(sc->sc_ethernet, flags);
    353 		if (rv != 0)
    354 			return (rv);
    355 		sc->sc_ethernet = NULL;
    356 	}
    357 
    358 	if (sc->sc_modem != NULL) {
    359 		rv = config_detach(sc->sc_modem, flags);
    360 		if (rv != 0)
    361 			return (rv);
    362 		sc->sc_modem = NULL;
    363 	}
    364 
    365 	/* Unmap our i/o windows. */
    366 	if (sc->sc_flags & MHZC_MODEM_MAPPED)
    367 		pcmcia_io_unmap(sc->sc_pf, sc->sc_modem_io_window);
    368 	if (sc->sc_flags & MHZC_ETHERNET_MAPPED)
    369 		pcmcia_io_unmap(sc->sc_pf, sc->sc_ethernet_io_window);
    370 
    371 	/* Free our i/o spaces. */
    372 	if (sc->sc_flags & MHZC_ETHERNET_ALLOCED)
    373 		pcmcia_io_free(sc->sc_pf, &sc->sc_modem_pcioh);
    374 	if (sc->sc_flags & MHZC_MODEM_ALLOCED)
    375 		pcmcia_io_free(sc->sc_pf, &sc->sc_ethernet_pcioh);
    376 
    377 	sc->sc_flags = 0;
    378 
    379 	return (0);
    380 }
    381 
    382 int
    383 mhzc_activate(self, act)
    384 	struct device *self;
    385 	enum devact act;
    386 {
    387 	struct mhzc_softc *sc = (void *)self;
    388 	int s, rv = 0;
    389 
    390 	s = splhigh();
    391 	switch (act) {
    392 	case DVACT_ACTIVATE:
    393 		rv = EOPNOTSUPP;
    394 		break;
    395 
    396 	case DVACT_DEACTIVATE:
    397 		if (sc->sc_ethernet != NULL) {
    398 			rv = config_deactivate(sc->sc_ethernet);
    399 			if (rv != 0)
    400 				goto out;
    401 		}
    402 
    403 		if (sc->sc_modem != NULL) {
    404 			rv = config_deactivate(sc->sc_modem);
    405 			if (rv != 0)
    406 				goto out;
    407 		}
    408 		break;
    409 	}
    410  out:
    411 	splx(s);
    412 	return (rv);
    413 }
    414 
    415 int
    416 mhzc_intr(arg)
    417 	void *arg;
    418 {
    419 	struct mhzc_softc *sc = arg;
    420 	int rval = 0;
    421 
    422 #if NCOM_MHZC > 0
    423 	if (sc->sc_modem != NULL &&
    424 	    (sc->sc_flags & MHZC_MODEM_ENABLED) != 0)
    425 		rval |= comintr(sc->sc_modem);
    426 #endif
    427 
    428 #if NSM_MHZC > 0
    429 	if (sc->sc_ethernet != NULL &&
    430 	    (sc->sc_flags & MHZC_ETHERNET_ENABLED) != 0)
    431 		rval |= smc91cxx_intr(sc->sc_ethernet);
    432 #endif
    433 
    434 	return (rval);
    435 }
    436 
    437 int
    438 mhzc_enable(sc, flag)
    439 	struct mhzc_softc *sc;
    440 	int flag;
    441 {
    442 	int error;
    443 
    444 	if ((sc->sc_flags & flag) == flag) {
    445 		printf("%s: already enabled\n", sc->sc_dev.dv_xname);
    446 		return (0);
    447 	}
    448 
    449 	if ((sc->sc_flags & (MHZC_MODEM_ENABLED|MHZC_ETHERNET_ENABLED)) != 0) {
    450 		sc->sc_flags |= flag;
    451 		return (0);
    452 	}
    453 
    454 	/*
    455 	 * Establish our interrupt handler.
    456 	 *
    457 	 * XXX Note, we establish this at IPL_NET.  This is suboptimal
    458 	 * XXX the Modem portion, but is necessary to make the Ethernet
    459 	 * XXX portion have the correct interrupt level semantics.
    460 	 *
    461 	 * XXX Eventually we should use the `enabled' bits in the
    462 	 * XXX flags word to determine which level we should be at.
    463 	 */
    464 	sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_NET,
    465 	    mhzc_intr, sc);
    466 	if (!sc->sc_ih)
    467 		return (EIO);
    468 
    469 	error = pcmcia_function_enable(sc->sc_pf);
    470 	if (error) {
    471 		pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
    472 		sc->sc_ih = 0;
    473 		return (error);
    474 	}
    475 
    476 	/*
    477 	 * Perform any special enable magic necessary.
    478 	 */
    479 	if (sc->sc_product->mp_enable != NULL &&
    480 	    (*sc->sc_product->mp_enable)(sc) != 0) {
    481 		pcmcia_function_disable(sc->sc_pf);
    482 		pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
    483 		return (1);
    484 	}
    485 
    486 	sc->sc_flags |= flag;
    487 	return (0);
    488 }
    489 
    490 void
    491 mhzc_disable(sc, flag)
    492 	struct mhzc_softc *sc;
    493 	int flag;
    494 {
    495 
    496 	if ((sc->sc_flags & flag) == 0) {
    497 		printf("%s: already disabled\n", sc->sc_dev.dv_xname);
    498 		return;
    499 	}
    500 
    501 	sc->sc_flags &= ~flag;
    502 	if ((sc->sc_flags & (MHZC_MODEM_ENABLED|MHZC_ETHERNET_ENABLED)) != 0)
    503 		return;
    504 
    505 	pcmcia_function_disable(sc->sc_pf);
    506 	pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
    507 	sc->sc_ih = 0;
    508 }
    509 
    510 /*****************************************************************************
    511  * Megahertz EM3336 (and compatibles) support
    512  *****************************************************************************/
    513 
    514 int	mhzc_em3336_lannid_ciscallback(struct pcmcia_tuple *, void *);
    515 int	mhzc_em3336_ascii_enaddr(const char *cisstr, u_int8_t *);
    516 
    517 int
    518 mhzc_em3336_enaddr(sc, myla)
    519 	struct mhzc_softc *sc;
    520 	u_int8_t *myla;
    521 {
    522 
    523 	/* Get the station address from CIS tuple 0x81. */
    524 	if (pcmcia_scan_cis(device_parent(&sc->sc_dev),
    525 	    mhzc_em3336_lannid_ciscallback, myla) != 1) {
    526 		printf("%s: unable to get Ethernet address from CIS\n",
    527 		    sc->sc_dev.dv_xname);
    528 		return (0);
    529 	}
    530 
    531 	return (1);
    532 }
    533 
    534 int
    535 mhzc_em3336_enable(sc)
    536 	struct mhzc_softc *sc;
    537 {
    538 	struct pcmcia_mem_handle memh;
    539 	bus_size_t memoff;
    540 	int memwin, reg;
    541 
    542 	/*
    543 	 * Bring the chip to live by touching its registers in the correct
    544 	 * way (as per my reference... the Linux smc91c92_cs.c driver by
    545 	 * David A. Hinds).
    546 	 */
    547 
    548 	/* Map the ISRPOWEREG. */
    549 	if (pcmcia_mem_alloc(sc->sc_pf, 0x1000, &memh) != 0) {
    550 		printf("%s: unable to allocate memory space\n",
    551 		    sc->sc_dev.dv_xname);
    552 		return (1);
    553 	}
    554 
    555 	if (pcmcia_mem_map(sc->sc_pf, PCMCIA_MEM_ATTR, 0, 0x1000,
    556 	    &memh, &memoff, &memwin)) {
    557 		printf("%s: unable to map memory space\n",
    558 		    sc->sc_dev.dv_xname);
    559 		pcmcia_mem_free(sc->sc_pf, &memh);
    560 		return (1);
    561 	}
    562 
    563 	/*
    564 	 * The magic sequence:
    565 	 *
    566 	 *	- read/write the CCR option register.
    567 	 *	- read the ISRPOWEREG 2 times.
    568 	 *	- read/write the CCR option register again.
    569 	 */
    570 
    571 	reg = pcmcia_ccr_read(sc->sc_pf, PCMCIA_CCR_OPTION);
    572 	pcmcia_ccr_write(sc->sc_pf, PCMCIA_CCR_OPTION, reg);
    573 
    574 	reg = bus_space_read_1(memh.memt, memh.memh, 0x380);
    575 	delay(5);
    576 	reg = bus_space_read_1(memh.memt, memh.memh, 0x380);
    577 
    578 	tsleep(&mhzc_em3336_enable, PWAIT, "mhz3en", hz * 200 / 1000);
    579 
    580 	reg = pcmcia_ccr_read(sc->sc_pf, PCMCIA_CCR_OPTION);
    581 	delay(5);
    582 	pcmcia_ccr_write(sc->sc_pf, PCMCIA_CCR_OPTION, reg);
    583 
    584 	pcmcia_mem_unmap(sc->sc_pf, memwin);
    585 	pcmcia_mem_free(sc->sc_pf, &memh);
    586 
    587 	return (0);
    588 }
    589 
    590 int
    591 mhzc_em3336_lannid_ciscallback(tuple, arg)
    592 	struct pcmcia_tuple *tuple;
    593 	void *arg;
    594 {
    595 	u_int8_t *myla = arg, addr_str[ETHER_ADDR_LEN * 2];
    596 	int i;
    597 
    598 	if (tuple->code == 0x81) {
    599 		/*
    600 		 * We have a string-encoded address.  Length includes
    601 		 * terminating 0xff.
    602 		 */
    603 		if (tuple->length != (ETHER_ADDR_LEN * 2) + 1)
    604 			return (0);
    605 
    606 		for (i = 0; i < tuple->length - 1; i++)
    607 			addr_str[i] = pcmcia_tuple_read_1(tuple, i);
    608 
    609 		/*
    610 		 * Decode the string into `myla'.
    611 		 */
    612 		return (mhzc_em3336_ascii_enaddr(addr_str, myla));
    613 	}
    614 	return (0);
    615 }
    616 
    617 /* XXX This should be shared w/ if_sm_pcmcia.c */
    618 int
    619 mhzc_em3336_ascii_enaddr(cisstr, myla)
    620 	const char *cisstr;
    621 	u_int8_t *myla;
    622 {
    623 	u_int8_t digit;
    624 	int i;
    625 
    626 	memset(myla, 0, ETHER_ADDR_LEN);
    627 
    628 	for (i = 0, digit = 0; i < (ETHER_ADDR_LEN * 2); i++) {
    629 		if (cisstr[i] >= '0' && cisstr[i] <= '9')
    630 			digit |= cisstr[i] - '0';
    631 		else if (cisstr[i] >= 'a' && cisstr[i] <= 'f')
    632 			digit |= (cisstr[i] - 'a') + 10;
    633 		else if (cisstr[i] >= 'A' && cisstr[i] <= 'F')
    634 			digit |= (cisstr[i] - 'A') + 10;
    635 		else {
    636 			/* Bogus digit!! */
    637 			return (0);
    638 		}
    639 
    640 		/* Compensate for ordering of digits. */
    641 		if (i & 1) {
    642 			myla[i >> 1] = digit;
    643 			digit = 0;
    644 		} else
    645 			digit <<= 4;
    646 	}
    647 
    648 	return (1);
    649 }
    650 
    651 /****** Here begins the com attachment code. ******/
    652 
    653 #if NCOM_MHZC > 0
    654 int	com_mhzc_match(device_t, cfdata_t , void *);
    655 void	com_mhzc_attach(device_t, device_t, void *);
    656 int	com_mhzc_detach(device_t, int);
    657 
    658 /* No mhzc-specific goo in the softc; it's all in the parent. */
    659 CFATTACH_DECL_NEW(com_mhzc, sizeof(struct com_softc),
    660     com_mhzc_match, com_mhzc_attach, com_detach, com_activate);
    661 
    662 int	com_mhzc_enable(struct com_softc *);
    663 void	com_mhzc_disable(struct com_softc *);
    664 
    665 int
    666 com_mhzc_match(device_t parent, cfdata_t match, void *aux)
    667 {
    668 	extern struct cfdriver com_cd;
    669 	const char *name = aux;
    670 
    671 	/* Device is always present. */
    672 	if (strcmp(name, com_cd.cd_name) == 0)
    673 		return (1);
    674 
    675 	return (0);
    676 }
    677 
    678 void
    679 com_mhzc_attach(device_t parent, device_t self, void *aux)
    680 {
    681 	struct com_softc *sc = device_private(self);
    682 	struct mhzc_softc *msc = device_private(parent);
    683 
    684 	sc->sc_dev = self;
    685 	aprint_normal("\n");
    686 
    687 	COM_INIT_REGS(sc->sc_regs,
    688 	    msc->sc_modem_pcioh.iot,
    689 	    msc->sc_modem_pcioh.ioh,
    690 	    -1);
    691 
    692 	sc->enabled = 1;
    693 
    694 	sc->sc_frequency = COM_FREQ;
    695 
    696 	sc->enable = com_mhzc_enable;
    697 	sc->disable = com_mhzc_disable;
    698 
    699 	aprint_normal("%s", device_xname(self));
    700 
    701 	com_attach_subr(sc);
    702 
    703 	sc->enabled = 0;
    704 }
    705 
    706 int
    707 com_mhzc_enable(struct com_softc *sc)
    708 {
    709 
    710 	return (mhzc_enable(device_private(device_parent(sc->sc_dev)),
    711 	    MHZC_MODEM_ENABLED));
    712 }
    713 
    714 void
    715 com_mhzc_disable(struct com_softc *sc)
    716 {
    717 
    718 	mhzc_disable(device_private(device_parent(sc->sc_dev)),
    719 	    MHZC_MODEM_ENABLED);
    720 }
    721 
    722 #endif /* NCOM_MHZC > 0 */
    723 
    724 /****** Here begins the sm attachment code. ******/
    725 
    726 #if NSM_MHZC > 0
    727 int	sm_mhzc_match(struct device *, struct cfdata *, void *);
    728 void	sm_mhzc_attach(struct device *, struct device *, void *);
    729 
    730 /* No mhzc-specific goo in the softc; it's all in the parent. */
    731 CFATTACH_DECL(sm_mhzc, sizeof(struct smc91cxx_softc),
    732     sm_mhzc_match, sm_mhzc_attach, smc91cxx_detach, smc91cxx_activate);
    733 
    734 int	sm_mhzc_enable(struct smc91cxx_softc *);
    735 void	sm_mhzc_disable(struct smc91cxx_softc *);
    736 
    737 int
    738 sm_mhzc_match(struct device *parent, struct cfdata *match,
    739     void *aux)
    740 {
    741 	extern struct cfdriver sm_cd;
    742 	const char *name = aux;
    743 
    744 	/* Device is always present. */
    745 	if (strcmp(name, sm_cd.cd_name) == 0)
    746 		return (1);
    747 
    748 	return (0);
    749 }
    750 
    751 void
    752 sm_mhzc_attach(struct device *parent, struct device *self, void *aux)
    753 {
    754 	struct smc91cxx_softc *sc = (void *)self;
    755 	struct mhzc_softc *msc = (void *)parent;
    756 	u_int8_t myla[ETHER_ADDR_LEN];
    757 
    758 	aprint_normal("\n");
    759 
    760 	sc->sc_bst = msc->sc_ethernet_pcioh.iot;
    761 	sc->sc_bsh = msc->sc_ethernet_pcioh.ioh;
    762 
    763 	sc->sc_enable = sm_mhzc_enable;
    764 	sc->sc_disable = sm_mhzc_disable;
    765 
    766 	if ((*msc->sc_product->mp_enaddr)(msc, myla) != 1)
    767 		return;
    768 
    769 	/* Perform generic initialization. */
    770 	smc91cxx_attach(sc, myla);
    771 }
    772 
    773 int
    774 sm_mhzc_enable(sc)
    775 	struct smc91cxx_softc *sc;
    776 {
    777 
    778 	return (mhzc_enable((struct mhzc_softc *)device_parent(&sc->sc_dev),
    779 	    MHZC_ETHERNET_ENABLED));
    780 }
    781 
    782 void
    783 sm_mhzc_disable(sc)
    784 	struct smc91cxx_softc *sc;
    785 {
    786 
    787 	mhzc_disable((struct mhzc_softc *)device_parent(&sc->sc_dev),
    788 	    MHZC_ETHERNET_ENABLED);
    789 }
    790 
    791 #endif /* NSM_MHZC > 0 */
    792