NetBSD/sys/dev/pcmcia/aic_pcmcia.c

/*	$NetBSD: aic_pcmcia.c,v 1.43 2009/11/12 19:24:06 dyoung Exp $	*/

/*
 * Copyright (c) 1997 Marc Horowitz.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Marc Horowitz.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: aic_pcmcia.c,v 1.43 2009/11/12 19:24:06 dyoung Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/select.h>
#include <sys/device.h>

#include <sys/cpu.h>
#include <sys/bus.h>
#include <sys/intr.h>

#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsipiconf.h>
#include <dev/scsipi/scsi_all.h>

#include <dev/ic/aic6360var.h>

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

struct aic_pcmcia_softc {
	struct aic_softc sc_aic;		/* real "aic" softc */

	/* PCMCIA-specific goo. */
	struct pcmcia_function *sc_pf;		/* our PCMCIA function */
	void *sc_ih;				/* interrupt handler */

	int sc_state;
#define	AIC_PCMCIA_ATTACHED	3
};

static int	aic_pcmcia_match(device_t, cfdata_t, void *);
static int	aic_pcmcia_validate_config(struct pcmcia_config_entry *);
static void	aic_pcmcia_attach(device_t, device_t, void *);
static int	aic_pcmcia_detach(device_t, int);
static int	aic_pcmcia_enable(device_t, int);

CFATTACH_DECL_NEW(aic_pcmcia, sizeof(struct aic_pcmcia_softc),
    aic_pcmcia_match, aic_pcmcia_attach, aic_pcmcia_detach, NULL);

static const struct pcmcia_product aic_pcmcia_products[] = {
	{ PCMCIA_VENDOR_ADAPTEC, PCMCIA_PRODUCT_ADAPTEC_APA1460,
	  PCMCIA_CIS_INVALID },

	{ PCMCIA_VENDOR_ADAPTEC, PCMCIA_PRODUCT_ADAPTEC_APA1460A,
	  PCMCIA_CIS_INVALID },

	{ PCMCIA_VENDOR_NEWMEDIA, PCMCIA_PRODUCT_NEWMEDIA_BUSTOASTER,
	  PCMCIA_CIS_INVALID },
};
static const size_t aic_pcmcia_nproducts = __arraycount(aic_pcmcia_products);

int
aic_pcmcia_match(device_t parent, cfdata_t match, void *aux)
{
	struct pcmcia_attach_args *pa = aux;

	if (pcmcia_product_lookup(pa, aic_pcmcia_products, aic_pcmcia_nproducts,
	    sizeof(aic_pcmcia_products[0]), NULL))
		return (1);
	return (0);
}

int
aic_pcmcia_validate_config(struct pcmcia_config_entry *cfe)
{
	if (cfe->iftype != PCMCIA_IFTYPE_IO ||
	    cfe->num_memspace != 0 ||
	    cfe->num_iospace != 1)
		return (EINVAL);
	return (0);
}

void
aic_pcmcia_attach(device_t parent, device_t self, void *aux)
{
	struct aic_pcmcia_softc *psc = device_private(self);
	struct aic_softc *sc = &psc->sc_aic;
	struct pcmcia_attach_args *pa = aux;
	struct pcmcia_config_entry *cfe;
	struct pcmcia_function *pf = pa->pf;
	int error;

	sc->sc_dev = self;
	psc->sc_pf = pf;

	error = pcmcia_function_configure(pf, aic_pcmcia_validate_config);
	if (error) {
		aprint_error_dev(self, "configure failed, error=%d\n", error);
		return;
	}

	cfe = pf->cfe;
	sc->sc_iot = cfe->iospace[0].handle.iot;
	sc->sc_ioh = cfe->iospace[0].handle.ioh;

	error = aic_pcmcia_enable(self, 1);
	if (error)
		goto fail;

	if (!aic_find(sc->sc_iot, sc->sc_ioh)) {
		aprint_error_dev(self, "unable to detect chip!\n");
		goto fail2;
	}

	/* We can enable and disable the controller. */
	sc->sc_adapter.adapt_enable = aic_pcmcia_enable;
	sc->sc_adapter.adapt_refcnt = 1;

	aicattach(sc);
	scsipi_adapter_delref(&sc->sc_adapter);
	psc->sc_state = AIC_PCMCIA_ATTACHED;
	return;

fail2:
	aic_pcmcia_enable(self, 0);
fail:
	pcmcia_function_unconfigure(pf);
}

int
aic_pcmcia_detach(device_t self, int flags)
{
	struct aic_pcmcia_softc *psc = device_private(self);
	int error;

	if (psc->sc_state != AIC_PCMCIA_ATTACHED)
		return (0);

	error = aic_detach(self, flags);
	if (error)
		return (error);

	pcmcia_function_unconfigure(psc->sc_pf);

	return (0);
}

int
aic_pcmcia_enable(device_t self, int onoff)
{
	struct aic_pcmcia_softc *psc = device_private(self);
	struct aic_softc *sc = &psc->sc_aic;
	int error;

	if (onoff) {
		/* Establish the interrupt handler. */
		psc->sc_ih = pcmcia_intr_establish(psc->sc_pf, IPL_BIO,
		    aicintr, sc);
		if (!psc->sc_ih)
			return (EIO);

		error = pcmcia_function_enable(psc->sc_pf);
		if (error) {
			pcmcia_intr_disestablish(psc->sc_pf, psc->sc_ih);
			psc->sc_ih = 0;
			return (error);
		}

		/* Initialize only chip.  */
		aic_init(sc, 0);
	} else {
		pcmcia_function_disable(psc->sc_pf);
		pcmcia_intr_disestablish(psc->sc_pf, psc->sc_ih);
		psc->sc_ih = 0;
	}

	return (0);
}