/*      $NetBSD: bha_pci.c,v 1.41 2016/10/13 17:11:09 jdolecek Exp $    */

/*-
 * Copyright (c) 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Charles M. Hannum.
 *
 * 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.
 *
 * 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bha_pci.c,v 1.41 2016/10/13 17:11:09 jdolecek Exp $");

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

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

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

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

#include <dev/ic/bhareg.h>
#include <dev/ic/bhavar.h>

#define PCI_CBIO        0x10

/*
 * 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.
 */
static int
bha_pci_match(device_t parent, cfdata_t match, void *aux)
{
        struct pci_attach_args *pa = aux;
        bus_space_tag_t iot;
        bus_space_handle_t ioh;
        bus_size_t iosize;
        int rv;

        if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_BUSLOGIC)
                return (0);

        if (PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_BUSLOGIC_MULTIMASTER_NC &&
            PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_BUSLOGIC_MULTIMASTER)
                return (0);

        if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, &iot, &ioh,
            NULL, &iosize))
                return (0);

        rv = bha_find(iot, ioh);

        bus_space_unmap(iot, ioh, iosize);

        return (rv);
}

/*
 * Attach all the sub-devices we can find
 */
static void
bha_pci_attach(device_t parent, device_t self, void *aux)
{
        struct pci_attach_args *pa = aux;
        struct bha_softc *sc = device_private(self);
        bus_space_tag_t iot;
        bus_space_handle_t ioh;
        pci_chipset_tag_t pc = pa->pa_pc;
        pci_intr_handle_t ih;
        pcireg_t csr;
        const char *model, *intrstr;
        char intrbuf[PCI_INTRSTR_LEN];

        sc->sc_dev = self;

        aprint_naive(": SCSI controller\n");

        if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BUSLOGIC_MULTIMASTER_NC)
                model = "BusLogic 9xxC SCSI";
        else if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_BUSLOGIC_MULTIMASTER)
                model = "BusLogic 9xxC SCSI";
        else
                model = "unknown model!";
        aprint_normal(": %s\n", model);

        if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, &iot, &ioh,
            NULL, NULL)) {
                aprint_error_dev(sc->sc_dev, "unable to map device registers\n");
                return;
        }

        sc->sc_iot = iot;
        sc->sc_ioh = ioh;
        sc->sc_dmat = pa->pa_dmat;
        if (!bha_find(iot, ioh))
                panic("bha_pci_attach: bha_find failed");

        sc->sc_dmaflags = 0;

        csr = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
        pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
            csr | PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_IO_ENABLE);

        if (pci_intr_map(pa, &ih)) {
                aprint_error_dev(sc->sc_dev, "couldn't map interrupt\n");
                return;
        }
        intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
        sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_BIO, bha_intr, sc,
            device_xname(sc->sc_dev));
        if (sc->sc_ih == NULL) {
                aprint_error_dev(sc->sc_dev, "couldn't establish interrupt");
                if (intrstr != NULL)
                        aprint_error(" at %s", intrstr);
                aprint_error("\n");
                return;
        }
        aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);

        bha_attach(sc);

        bha_disable_isacompat(sc);
}

CFATTACH_DECL_NEW(bha_pci, sizeof(struct bha_softc),
    bha_pci_match, bha_pci_attach, NULL, NULL);