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Initial revision

/*	$OpenBSD: adv_pci.c,v 1.9 2007/04/10 17:47:55 miod Exp $	*/
/*	$NetBSD: adv_pci.c,v 1.5 1998/09/26 15:52:55 dante Exp $	*/

/*
 * Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved.
 * 
 * Author: Baldassare Dante Profeta <dante@mclink.it>
 * 
 * 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.
 */
/*
 * Device probe and attach routines for the following
 * Advanced Systems Inc. SCSI controllers:
 *
 *    Connectivity Products:
 *      ABP920 - Bus-Master PCI (16 CDB)
 *      ABP930 - Bus-Master PCI (16 CDB)		(Footnote 1)
 *      ABP930U - Bus-Master PCI Ultra (16 CDB)
 *      ABP930UA - Bus-Master PCI Ultra (16 CDB)
 *      ABP960 - Bus-Master PCI MAC/PC (16 CDB)		(Footnote 2)
 *      ABP960U - Bus-Master PCI MAC/PC Ultra (16 CDB)	(Footnote 2)
 *
 *   Single Channel Products:
 *      ABP940 - Bus-Master PCI (240 CDB)
 *      ABP940U - Bus-Master PCI Ultra (240 CDB)
 *      ABP970 - Bus-Master PCI MAC/PC (240 CDB)
 *      ABP970U - Bus-Master PCI MAC/PC Ultra (240 CDB)
 *
 *   Multi Channel Products:
 *      ABP950 - Dual Channel Bus-Master PCI (240 CDB Per Channel)
 *      ABP980 - Four Channel Bus-Master PCI (240 CDB Per Channel)
 *      ABP980U - Four Channel Bus-Master PCI Ultra (240 CDB Per Channel)
 *
 *   Footnotes:
 *     1. This board has been sold by SIIG as the Fast SCSI Pro PCI.
 *     2. This board has been sold by Iomega as a Jaz Jet PCI adapter.
 */

#include <sys/types.h>
#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 <scsi/scsi_all.h>
#include <scsi/scsiconf.h>

#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>

#include <dev/ic/adv.h>
#include <dev/ic/advlib.h>

/******************************************************************************/

#define PCI_CBIO        0x10

/******************************************************************************/

int	adv_pci_match(struct device *, void *, void *);
void	adv_pci_attach(struct device *, struct device *, void *);

struct cfattach adv_pci_ca =
{
	sizeof(ASC_SOFTC), adv_pci_match, adv_pci_attach
};

const struct pci_matchid adv_pci_devices[] = {
	{ PCI_VENDOR_ADVSYS, PCI_PRODUCT_ADVSYS_1200A },
	{ PCI_VENDOR_ADVSYS, PCI_PRODUCT_ADVSYS_1200B },
	{ PCI_VENDOR_ADVSYS, PCI_PRODUCT_ADVSYS_ULTRA },
};

/******************************************************************************/
/*
 * Check the slots looking for a board we recognise
 * If we find one, note its address (slot) and call
 * the actual probe routine to check it out.
 */
int 
adv_pci_match(parent, match, aux)
	struct device *parent;
	void *match, *aux;
{
	return (pci_matchbyid((struct pci_attach_args *)aux, adv_pci_devices,
	    sizeof(adv_pci_devices)/sizeof(adv_pci_devices[0])));
}


void 
adv_pci_attach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct pci_attach_args *pa = aux;
	ASC_SOFTC      *sc = (void *) self;
	bus_space_handle_t ioh;
	bus_size_t advsize;
	pci_intr_handle_t ih;
	pci_chipset_tag_t pc = pa->pa_pc;
	const char     *intrstr;
	int retval;

	sc->sc_flags = 0x0;

	/*
	 * Latency timer settings.
	 */
	{
		u_int32_t       bhlcr;

		bhlcr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_BHLC_REG);

		if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADVSYS_1200A ||
		    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADVSYS_1200B) {
			bhlcr &= 0xFFFF00FFul;
			pci_conf_write(pa->pa_pc, pa->pa_tag,
					PCI_BHLC_REG, bhlcr);
		} else if ((PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADVSYS_ULTRA) &&
			   (PCI_LATTIMER(bhlcr) < 0x20)) {
			bhlcr &= 0xFFFF00FFul;
			bhlcr |= 0x00002000ul;
			pci_conf_write(pa->pa_pc, pa->pa_tag,
					PCI_BHLC_REG, bhlcr);
		}
	}


	/*
	 * Map Device Registers for I/O
	 */
	retval = pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
	    &sc->sc_iot, &ioh, NULL, &advsize, 0);
	if (retval) {
		printf(": unable to map device registers\n");
		return;
	}
	sc->sc_ioh = ioh;
	sc->sc_dmat = pa->pa_dmat;
	sc->pci_device_id = pa->pa_id;
	sc->bus_type = ASC_IS_PCI;

	/*
	 * Initialize the board
	 */
	if (adv_init(sc)) {
		printf(": adv_init failed\n");
		bus_space_unmap(sc->sc_iot, ioh, advsize);
		return;
	}

	/*
	 * Map Interrupt line
	 */
	if (pci_intr_map(pa, &ih)) {
		printf(": couldn't map interrupt\n");
		bus_space_unmap(sc->sc_iot, ioh, advsize);
		return;
	}
	intrstr = pci_intr_string(pc, ih);

	/*
	 * Establish Interrupt handler
	 */
	sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, adv_intr, sc,
				       sc->sc_dev.dv_xname);
	if (sc->sc_ih == NULL) {
		printf(": couldn't establish interrupt");
		if (intrstr != NULL)
			printf(" at %s", intrstr);
		printf("\n");
		bus_space_unmap(sc->sc_iot, ioh, advsize);
		return;
	}
	printf(": %s\n", intrstr);

	/*
	 * Attach all the sub-devices we can find
	 */
	adv_attach(sc);
}
/******************************************************************************/