/*	$NetBSD: if_sm_pcmcia.c,v 1.16 1999/02/19 21:49:43 abs Exp $	*/

/*-
 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
 * NASA Ames Research Center.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the NetBSD
 *	Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "opt_inet.h"
#include "opt_ns.h"
#include "bpfilter.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/select.h>
#include <sys/device.h>

#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_ether.h>
#include <net/if_media.h>

#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_inarp.h>
#endif

#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif

#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif

#include <machine/intr.h>
#include <machine/bus.h>

#include <dev/ic/smc91cxxreg.h>
#include <dev/ic/smc91cxxvar.h>

#include <dev/pcmcia/pcmciareg.h>
#include <dev/pcmcia/pcmciavar.h>
#include <dev/pcmcia/pcmciadevs.h>

int	sm_pcmcia_match __P((struct device *, struct cfdata *, void *));
void	sm_pcmcia_attach __P((struct device *, struct device *, void *));
int	sm_pcmcia_detach __P((struct device *, int));

struct sm_pcmcia_softc {
	struct	smc91cxx_softc sc_smc;		/* real "smc" softc */

	/* PCMCIA-specific goo. */
	struct	pcmcia_io_handle sc_pcioh;	/* PCMCIA i/o space info */
	int	sc_io_window;			/* our i/o window */
	void	*sc_ih;				/* interrupt cookie */
	struct	pcmcia_function *sc_pf;		/* our PCMCIA function */
};

struct cfattach sm_pcmcia_ca = {
	sizeof(struct sm_pcmcia_softc), sm_pcmcia_match, sm_pcmcia_attach,
	    sm_pcmcia_detach, smc91cxx_activate
};

int	sm_pcmcia_enable __P((struct smc91cxx_softc *));
void	sm_pcmcia_disable __P((struct smc91cxx_softc *));

int	sm_pcmcia_ascii_enaddr __P((const char *, u_int8_t *));
int	sm_pcmcia_funce_enaddr __P((struct device *, u_int8_t *));

int	sm_pcmcia_lannid_ciscallback __P((struct pcmcia_tuple *, void *));

struct sm_pcmcia_product {
	u_int32_t	spp_vendor;	/* vendor ID */
	u_int32_t	spp_product;	/* product ID */
	int		spp_expfunc;	/* expected function */
	const char	*spp_name;	/* product name */
} sm_pcmcia_products[] = {
	{ PCMCIA_VENDOR_MEGAHERTZ2,	PCMCIA_PRODUCT_MEGAHERTZ2_XJACK,
	  0,				PCMCIA_STR_MEGAHERTZ2_XJACK },

	{ PCMCIA_VENDOR_MEGAHERTZ,	PCMCIA_PRODUCT_MEGAHERTZ_XJEM3336,
	  0,				PCMCIA_STR_MEGAHERTZ_XJEM3336 },

	{ PCMCIA_VENDOR_NEWMEDIA,	PCMCIA_PRODUCT_NEWMEDIA_BASICS,
	  0,				PCMCIA_STR_NEWMEDIA_BASICS },

#if 0
	{ PCMCIA_VENDOR_SMC,		PCMCIA_PRODUCT_SMC_8020BT,
	  0,				PCMCIA_STR_SMC_8020BT },
#endif

	{ 0,				0,
	  0,				NULL },
};

struct sm_pcmcia_product *sm_pcmcia_lookup __P((struct pcmcia_attach_args *));

struct sm_pcmcia_product *
sm_pcmcia_lookup(pa)
	struct pcmcia_attach_args *pa;
{
	struct sm_pcmcia_product *spp;

	for (spp = sm_pcmcia_products; spp->spp_name != NULL; spp++)
		if (pa->manufacturer == spp->spp_vendor &&
		    pa->product == spp->spp_product &&
		    pa->pf->number == spp->spp_expfunc)
			return (spp);
	return (NULL);
}

int
sm_pcmcia_match(parent, match, aux)
	struct device *parent;
	struct cfdata *match;
	void *aux;
{
	struct pcmcia_attach_args *pa = aux;

	if (sm_pcmcia_lookup(pa) != NULL)
		return (1);
	return (0);
}

void
sm_pcmcia_attach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct sm_pcmcia_softc *psc = (struct sm_pcmcia_softc *)self;
	struct smc91cxx_softc *sc = &psc->sc_smc;
	struct pcmcia_attach_args *pa = aux;
	struct pcmcia_config_entry *cfe;
	u_int8_t myla[ETHER_ADDR_LEN], *enaddr = NULL;
	struct sm_pcmcia_product *spp;

	psc->sc_pf = pa->pf;
	cfe = pa->pf->cfe_head.sqh_first;

	/* Enable the card. */
	pcmcia_function_init(pa->pf, cfe);
	if (pcmcia_function_enable(pa->pf)) {
		printf(": function enable failed\n");
		return;
	}

	/* XXX sanity check number of mem and i/o spaces */

	/* Allocate and map i/o space for the card. */
	if (pcmcia_io_alloc(pa->pf, 0, cfe->iospace[0].length,
	    cfe->iospace[0].length, &psc->sc_pcioh)) {
		printf(": can't allocate i/o space\n");
		return;
	}

	sc->sc_bst = psc->sc_pcioh.iot;
	sc->sc_bsh = psc->sc_pcioh.ioh;

	sc->sc_enable = sm_pcmcia_enable;
	sc->sc_disable = sm_pcmcia_disable;

	if (pcmcia_io_map(pa->pf, (cfe->flags & PCMCIA_CFE_IO16) ?
	    PCMCIA_WIDTH_IO16 : PCMCIA_WIDTH_IO8, 0, cfe->iospace[0].length,
	    &psc->sc_pcioh, &psc->sc_io_window)) {
		printf(": can't map i/o space\n");
		return;
	}

	spp = sm_pcmcia_lookup(pa);
	if (spp == NULL)
		panic("sm_pcmcia_attach: impossible");

	printf(": %s\n", spp->spp_name);

	/*
	 * First try to get the Ethernet address from FUNCE/LANNID tuple.
	 */
	if (sm_pcmcia_funce_enaddr(parent, myla))
		enaddr = myla;

	/*
	 * If that failed, try one of the CIS info strings.
	 */
	if (enaddr == NULL) {
		char *cisstr = NULL;

		switch (pa->manufacturer) {
		case PCMCIA_VENDOR_MEGAHERTZ:
		case PCMCIA_VENDOR_MEGAHERTZ2:
			cisstr = pa->pf->sc->card.cis1_info[3];
			break;

		case PCMCIA_VENDOR_SMC:
			cisstr = pa->pf->sc->card.cis1_info[2];
			break;
		}

		if (cisstr != NULL && sm_pcmcia_ascii_enaddr(cisstr, myla))
			enaddr = myla;
	}

	if (enaddr == NULL)
		printf("%s: unable to get Ethernet address\n",
		    sc->sc_dev.dv_xname);

	/* Perform generic intialization. */
	smc91cxx_attach(sc, enaddr);

	pcmcia_function_disable(pa->pf);
}

int
sm_pcmcia_detach(self, flags)
	struct device *self;
	int flags;
{
	struct sm_pcmcia_softc *psc = (struct sm_pcmcia_softc *)self;

	/* Unmap our i/o window. */
	pcmcia_io_unmap(psc->sc_pf, psc->sc_io_window);

	/* Free our i/o space. */
	pcmcia_io_free(psc->sc_pf, &psc->sc_pcioh);

#ifdef notyet
	/*
	 * Our softc is about to go away, so drop our reference
	 * to the ifnet.
	 */
	if_delref(psc->sc_smc.sc_ec.ec_if);
	return (0);
#else
	return (EBUSY);
#endif
}

int
sm_pcmcia_ascii_enaddr(cisstr, myla)
	const char *cisstr;
	u_int8_t *myla;
{
	char enaddr_str[12];
	int i, j;

	if (strlen(cisstr) != 12) {
		/* Bogus address! */
		return (0);
	}
	bcopy(cisstr, enaddr_str, 12);
	bzero(myla, sizeof(myla));
	for (i = 0; i < 6; i++) {
		for (j = 0; j < 2; j++) {
			/* Convert to upper case. */
			if (enaddr_str[(i * 2) + j] >= 'a' &&
			    enaddr_str[(i * 2) + j] <= 'z')
				enaddr_str[(i * 2) + j] -= 'a' - 'A';

			/* Parse the digit. */
			if (enaddr_str[(i * 2) + j] >= '0' &&
			    enaddr_str[(i * 2) + j] <= '9')
				myla[i] |= enaddr_str[(i * 2) + j]
				    - '0';
			else if (enaddr_str[(i * 2) + j] >= 'A' &&
				 enaddr_str[(i * 2) + j] <= 'F')
				myla[i] |= enaddr_str[(i * 2) + j]
				    - 'A' + 10;
			else {
				/* Bogus digit!! */
				return (0);
			}

			/* Compensate for ordering of digits. */
			if (j == 0)
				myla[i] <<= 4;
		}
	}

	return (1);
}

int
sm_pcmcia_funce_enaddr(parent, myla)
	struct device *parent;
	u_int8_t *myla;
{

	return (pcmcia_scan_cis(parent, sm_pcmcia_lannid_ciscallback, myla));
}

int
sm_pcmcia_lannid_ciscallback(tuple, arg)
	struct pcmcia_tuple *tuple;
	void *arg;
{
	u_int8_t *myla = arg;
	int i;

	if (tuple->code == PCMCIA_CISTPL_FUNCE) {
		/* subcode, length */
		if (tuple->length < 2)
			return (0);

		if ((pcmcia_tuple_read_1(tuple, 0) !=
		     PCMCIA_TPLFE_TYPE_LAN_NID) ||
		    (pcmcia_tuple_read_1(tuple, 1) != ETHER_ADDR_LEN))
			return (0);

		for (i = 0; i < ETHER_ADDR_LEN; i++)
			myla[i] = pcmcia_tuple_read_1(tuple, i + 2);
		return (1);
	}
	return (0);
}

int
sm_pcmcia_enable(sc)
	struct smc91cxx_softc *sc;
{
	struct sm_pcmcia_softc *psc = (struct sm_pcmcia_softc *)sc;

	/* Establish the interrupt handler. */
	psc->sc_ih = pcmcia_intr_establish(psc->sc_pf, IPL_NET, smc91cxx_intr,
	    sc);
	if (psc->sc_ih == NULL) {
		printf("%s: couldn't establish interrupt handler\n",
		    sc->sc_dev.dv_xname);
		return (1);
	}

	return (pcmcia_function_enable(psc->sc_pf));
}

void
sm_pcmcia_disable(sc)
	struct smc91cxx_softc *sc;
{
	struct sm_pcmcia_softc *psc = (struct sm_pcmcia_softc *)sc;

	pcmcia_function_disable(psc->sc_pf);

	pcmcia_intr_disestablish(psc->sc_pf, psc->sc_ih);
}