NetBSD/sys/dev/cardbus/ahc_cardbus.c

/*	$NetBSD: ahc_cardbus.c,v 1.1 2000/01/26 06:37:23 thorpej Exp $	*/

/*-
 * Copyright (c) 2000 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.
 */

/*
 * CardBus front-end for the Adaptec AIC-7xxx family of SCSI controllers.
 *
 * TODO:
 *	- power management
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/queue.h>
#include <sys/device.h>

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

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

#include <dev/pci/pcireg.h>

#include <dev/cardbus/cardbusvar.h>
#include <dev/cardbus/cardbusdevs.h>

#include <dev/ic/aic7xxxreg.h>
#include <dev/ic/aic7xxxvar.h>

#define	AHC_CARDBUS_IOBA	0x10
#define	AHC_CARDBUS_MMBA	0x14

struct ahc_cardbus_softc {
	struct ahc_data sc_ahc;		/* real AHC */

	/* CardBus-specific goo. */
	cardbus_devfunc_t sc_ct;	/* our CardBus devfuncs */
	int	sc_intrline;		/* our interrupt line */
	cardbustag_t sc_tag;

	int	sc_cbenable;		/* what CardBus access type to enable */
	int	sc_csr;			/* CSR bits */
};

int	ahc_cardbus_match __P((struct device *, struct cfdata *, void *));
void	ahc_cardbus_attach __P((struct device *, struct device *, void *));

struct cfattach ahc_cardbus_ca = {
	sizeof(struct ahc_data), ahc_cardbus_match, ahc_cardbus_attach,
};

int
ahc_cardbus_match(parent, match, aux)
	struct device *parent;
	struct cfdata *match;
	void *aux;
{
	struct cardbus_attach_args *ca = aux;

	if (CARDBUS_VENDOR(ca->ca_id) == CARDBUS_VENDOR_ADP &&
	    CARDBUS_PRODUCT(ca->ca_id) == CARDBUS_PRODUCT_ADP_1480)
		return (1);

	return (0);
}

void
ahc_cardbus_attach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct cardbus_attach_args *ca = aux;
	struct ahc_cardbus_softc *csc = (void *) self;
	struct ahc_data *ahc = &csc->sc_ahc;
	cardbus_devfunc_t ct = ca->ca_ct;
	cardbus_chipset_tag_t cc = ct->ct_cc;
	cardbus_function_tag_t cf = ct->ct_cf;
	bus_space_tag_t bst;
	bus_space_handle_t bsh;
	pcireg_t reg;
	ahc_type ahc_t = AHC_NONE;
	ahc_flag ahc_f = AHC_FNONE;

	csc->sc_ct = ct;
	csc->sc_tag = ca->ca_tag;
	csc->sc_intrline = ca->ca_intrline;

	printf(": Adaptec ADP-1480 SCSI\n");

	/*
	 * Map the device.
	 */
	csc->sc_csr = PCI_COMMAND_MASTER_ENABLE;
	if (Cardbus_mapreg_map(csc->sc_ct, AHC_CARDBUS_MMBA,
	    PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
	    &bst, &bsh, NULL, NULL) == 0) {
		csc->sc_cbenable = CARDBUS_MEM_ENABLE;
		csc->sc_csr |= PCI_COMMAND_MEM_ENABLE;
	} else if (Cardbus_mapreg_map(csc->sc_ct, AHC_CARDBUS_IOBA,
	    PCI_MAPREG_TYPE_IO, 0, &bst, &bsh, NULL, NULL) == 0) {
		csc->sc_cbenable = CARDBUS_IO_ENABLE;
		csc->sc_csr |= PCI_COMMAND_IO_ENABLE;
	} else {
		printf("%s: unable to map device registers\n",
		    ahc_name(ahc));
		return;
	}

	/* Make sure the right access type is on the CardBus bridge. */
	(*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cbenable);
	(*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);

	/* Enable the appropriate bits in the PCI CSR. */
	reg = cardbus_conf_read(cc, cf, ca->ca_tag, PCI_COMMAND_STATUS_REG);
	reg &= ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE);
	reg |= csc->sc_csr;
	cardbus_conf_write(cc, cf, ca->ca_tag, PCI_COMMAND_STATUS_REG, reg);

	/*
	 * Make sure the latency timer is set to some reasonable
	 * value.
	 */
	reg = cardbus_conf_read(cc, cf, ca->ca_tag, PCI_BHLC_REG);
	if (PCI_LATTIMER(reg) < 0x20) {
		reg &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT);
		reg |= (0x20 << PCI_LATTIMER_SHIFT);
		cardbus_conf_write(cc, cf, ca->ca_tag, PCI_BHLC_REG, reg);
	}

	/*
	 * ADP-1480 is always an AIC-7860.
	 */
	ahc_t = AHC_AIC7860;

	/*
	 * On all CardBus adapters, we allow SCB paging.
	 */
	ahc_f |= AHC_PAGESCBS;

	ahc_reset(ahc->sc_dev.dv_xname, bst, bsh);
	ahc_construct(ahc, bst, bsh, ca->ca_dmat, ahc_t, ahc_f);

	/*
	 * Establish the interrupt.
	 */
	ahc->sc_ih = cardbus_intr_establish(cc, cf, ca->ca_intrline, IPL_BIO,
	    ahc_intr, ahc);
	if (ahc->sc_ih == NULL) {
		printf("%s: unable to establish interrupt at %d\n",
		    ahc_name(ahc), ca->ca_intrline);
		return;
	}
	printf("%s: interrupting at %d\n", ahc_name(ahc), ca->ca_intrline);

	/*
	 * Do chip-specific initialization.
	 */
	{
		u_char sblkctl;
		const char *id_string;

		switch (ahc->type) {
		case AHC_AIC7860:
			id_string = "aic7860 ";
			ahc_load_seeprom(ahc);
			break;

		default:
			printf("%s: unknown controller type\n", ahc_name(ahc));
			ahc_free(ahc);
			return;
		}

		/*
		 * Take the LED out of diagnostic mode.
		 */
		sblkctl = AHC_INB(ahc, SBLKCTL);
		AHC_OUTB(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));

		/*
		 * I don't know where this is set in the SEEPROM or by the
		 * BIOS, so we default to 100%.
		 */
		AHC_OUTB(ahc, DSPCISTATUS, DFTHRSH_100);

		if (ahc->flags & AHC_USEDEFAULTS) {
			/*
			 * We can't "use defaults", as we have no way
			 * of knowing what default settings hould be.
			 */
			printf("%s: CardBus device requires an SEEPROM\n",
			    ahc_name(ahc));
			return;
		}

		printf("%s: %s", ahc_name(ahc), id_string);
	}

	if (ahc_init(ahc)) {
		ahc_free(ahc);
		return;
	}

	ahc_attach(ahc);
}