/*      $OpenBSD: sili_pci.c,v 1.16 2024/05/24 06:02:58 jsg Exp $ */

/*
 * Copyright (c) 2007 David Gwynne <dlg@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

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

#include <machine/bus.h>

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

#include <dev/ata/atascsi.h>

#include <dev/ic/silireg.h>
#include <dev/ic/silivar.h>

int     sili_pci_match(struct device *, void *, void *);
void    sili_pci_attach(struct device *, struct device *, void *);
int     sili_pci_detach(struct device *, int);
int     sili_pci_activate(struct device *, int);

struct sili_pci_softc {
        struct sili_softc       psc_sili;

        pci_chipset_tag_t       psc_pc;
        pcitag_t                psc_tag;

        void                    *psc_ih;
};

const struct cfattach sili_pci_ca = {
        sizeof(struct sili_pci_softc),
        sili_pci_match,
        sili_pci_attach,
        sili_pci_detach,
        sili_pci_activate
};

struct sili_device {
        pci_vendor_id_t         sd_vendor;
        pci_product_id_t        sd_product;
        u_int                   sd_nports;
};

const struct sili_device *sili_lookup(struct pci_attach_args *);

static const struct sili_device sili_devices[] = {
        { PCI_VENDOR_CMDTECH,   PCI_PRODUCT_CMDTECH_3124, 4 },
        { PCI_VENDOR_CMDTECH,   PCI_PRODUCT_CMDTECH_3131, 1 },
        { PCI_VENDOR_CMDTECH,   PCI_PRODUCT_CMDTECH_3132, 2 },
        { PCI_VENDOR_CMDTECH,   PCI_PRODUCT_CMDTECH_3531, 1 },
        { PCI_VENDOR_CMDTECH,   PCI_PRODUCT_CMDTECH_AAR_1220SA, 2 },
        { PCI_VENDOR_CMDTECH,   PCI_PRODUCT_CMDTECH_AAR_1225SA, 2 },
        { PCI_VENDOR_INTEL,     PCI_PRODUCT_INTEL_3124, 4 }
};

const struct sili_device *
sili_lookup(struct pci_attach_args *pa)
{
        int                             i;
        const struct sili_device        *sd;

        for (i = 0; i < nitems(sili_devices); i++) {
                sd = &sili_devices[i];
                if (sd->sd_vendor == PCI_VENDOR(pa->pa_id) &&
                    sd->sd_product == PCI_PRODUCT(pa->pa_id))
                        return (sd);
        }

        return (NULL);
}

int
sili_pci_match(struct device *parent, void *match, void *aux)
{
        return (sili_lookup((struct pci_attach_args *)aux) != NULL);
}

void
sili_pci_attach(struct device *parent, struct device *self, void *aux)
{
        struct sili_pci_softc           *psc = (void *)self;
        struct sili_softc               *sc = &psc->psc_sili;
        struct pci_attach_args          *pa = aux;
        const struct sili_device        *sd;
        pcireg_t                        memtype;
        pci_intr_handle_t               ih;
        const char                      *intrstr;

        sd = sili_lookup(pa);

        psc->psc_pc = pa->pa_pc;
        psc->psc_tag = pa->pa_tag;
        psc->psc_ih = NULL;
        sc->sc_dmat = pa->pa_dmat;
        sc->sc_ios_global = 0;
        sc->sc_ios_port = 0;
        sc->sc_nports = sd->sd_nports;

        memtype = pci_mapreg_type(psc->psc_pc, psc->psc_tag,
            SILI_PCI_BAR_GLOBAL);
        if (pci_mapreg_map(pa, SILI_PCI_BAR_GLOBAL, memtype, 0,
            &sc->sc_iot_global, &sc->sc_ioh_global,
            NULL, &sc->sc_ios_global, 0) != 0) {
                printf(": unable to map global registers\n");
                return;
        }

        memtype = pci_mapreg_type(psc->psc_pc, psc->psc_tag,
            SILI_PCI_BAR_PORT);
        if (pci_mapreg_map(pa, SILI_PCI_BAR_PORT, memtype, 0,
            &sc->sc_iot_port, &sc->sc_ioh_port,
            NULL, &sc->sc_ios_port, 0) != 0) {
                printf(": unable to map port registers\n");
                goto unmap_global;
        }

        /* hook up the interrupt */
        if (pci_intr_map(pa, &ih)) {
                printf(": unable to map interrupt\n");
                goto unmap_port;
        }
        intrstr = pci_intr_string(psc->psc_pc, ih);
        psc->psc_ih = pci_intr_establish(psc->psc_pc, ih, IPL_BIO,
            sili_intr, sc, sc->sc_dev.dv_xname);
        if (psc->psc_ih == NULL) {
                printf(": unable to map interrupt%s%s\n",
                    intrstr == NULL ? "" : " at ",
                    intrstr == NULL ? "" : intrstr);
                goto unmap_port;
        }
        printf(": %s", intrstr);

        if (sili_attach(sc) != 0) {
                /* error printed by sili_attach */
                goto deintr;
        }

        return;

deintr:
        pci_intr_disestablish(psc->psc_pc, psc->psc_ih);
        psc->psc_ih = NULL;
unmap_port:
        bus_space_unmap(sc->sc_iot_port, sc->sc_ioh_port, sc->sc_ios_port);
        sc->sc_ios_port = 0;
unmap_global:
        bus_space_unmap(sc->sc_iot_global, sc->sc_ioh_global,
            sc->sc_ios_global);
        sc->sc_ios_global = 0;
}

int
sili_pci_detach(struct device *self, int flags)
{
        struct sili_pci_softc           *psc = (struct sili_pci_softc *)self;
        struct sili_softc               *sc = &psc->psc_sili;
        int                             rv;

        rv = sili_detach(sc, flags);
        if (rv != 0)
                return (rv);

        if (psc->psc_ih != NULL) {
                pci_intr_disestablish(psc->psc_pc, psc->psc_ih);
                psc->psc_ih = NULL;
        }
        if (sc->sc_ios_port != 0) {
                bus_space_unmap(sc->sc_iot_port, sc->sc_ioh_port,
                    sc->sc_ios_port);
                sc->sc_ios_port = 0;
        }
        if (sc->sc_ios_global != 0) {
                bus_space_unmap(sc->sc_iot_global, sc->sc_ioh_global,
                    sc->sc_ios_global);
                sc->sc_ios_global = 0;
        }

        return (0);
}

int
sili_pci_activate(struct device *self, int act)
{
        struct sili_softc               *sc = (struct sili_softc *)self;
        int                              rv = 0;

        switch (act) {
        case DVACT_RESUME:
                sili_resume(sc);
                rv = config_activate_children(self, act);
                break;
        default:
                rv = config_activate_children(self, act);
                break;
        }
        return (rv);
}