/*      $OpenBSD: ciss_pci.c,v 1.23 2024/05/24 06:02:53 jsg Exp $       */

/*
 * Copyright (c) 2005 Michael Shalayeff
 * All rights reserved.
 *
 * 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 MIND, 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 <dev/pci/pcidevs.h>
#include <dev/pci/pcivar.h>

#include <machine/bus.h>

#include <scsi/scsi_all.h>
#include <scsi/scsi_disk.h>
#include <scsi/scsiconf.h>

#include <dev/ic/cissreg.h>
#include <dev/ic/cissvar.h>

#define CISS_BAR        0x10

int     ciss_pci_match(struct device *, void *, void *);
void    ciss_pci_attach(struct device *, struct device *, void *);
int     ciss_activate(struct device *, int);

const struct cfattach ciss_pci_ca = {
        sizeof(struct ciss_softc), ciss_pci_match, ciss_pci_attach,
        NULL, ciss_activate
};

const struct pci_matchid ciss_pci_devices[] = {
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA532 },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA5300 },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA5300_2 },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA5312 },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA5I },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA5I_2 },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA6I },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA641 },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA642 },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA6400 },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA6400EM },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA6422 },
        { PCI_VENDOR_COMPAQ,    PCI_PRODUCT_COMPAQ_CSA64XX },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAE200 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAE200I_1 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAE200I_2 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAE200I_3 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAE200I_4 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAE500_1 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAE500_2 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAH240 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAH240AR },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAH240TR },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAH241 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAH244BR },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP212 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP220I },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP222 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP224BR },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP230I },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP240TR },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP246BR },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP410 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP410I },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP411 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP420 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP420I },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP421 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP430 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP430I },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP431 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP440 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP440AR },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP441 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP530 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP531 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP542T },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP600 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP700M },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP711M },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP712M },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP721M },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP731M },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP741M },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP800 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP812 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP822 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP830 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP830I },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP840 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAP841 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSAV100 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSA_1 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSA_2 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSA_3 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSA_4 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSA_5 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSA_6 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSA_7 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSA_8 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSA_9 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSA_10 },
        { PCI_VENDOR_HP,        PCI_PRODUCT_HP_HPSA_11 }
};

int
ciss_pci_match(struct device *parent, void *match, void *aux)
{
        struct pci_attach_args *pa = aux;

        return pci_matchbyid(pa, ciss_pci_devices, nitems(ciss_pci_devices));
}

void
ciss_pci_attach(struct device *parent, struct device *self, void *aux)
{
        struct ciss_softc *sc = (struct ciss_softc *)self;
        struct pci_attach_args *pa = aux;
        bus_size_t size, cfgsz;
        pci_intr_handle_t ih;
        const char *intrstr;
        int cfg_bar, memtype;
        pcireg_t reg;

        memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, CISS_BAR);
        if (pci_mapreg_map(pa, CISS_BAR, memtype, 0,
            &sc->iot, &sc->ioh, NULL, &size, 0)) {
                printf(": can't map controller mem space\n");
                return;
        }
        sc->dmat = pa->pa_dmat;

        sc->iem = CISS_READYENA;
        reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
        if (PCI_VENDOR(reg) == PCI_VENDOR_COMPAQ &&
            (PCI_PRODUCT(reg) == PCI_PRODUCT_COMPAQ_CSA5I ||
             PCI_PRODUCT(reg) == PCI_PRODUCT_COMPAQ_CSA532 ||
             PCI_PRODUCT(reg) == PCI_PRODUCT_COMPAQ_CSA5312))
                sc->iem = CISS_READYENAB;

        cfg_bar = bus_space_read_2(sc->iot, sc->ioh, CISS_CFG_BAR);
        sc->cfgoff = bus_space_read_4(sc->iot, sc->ioh, CISS_CFG_OFF);
        if (cfg_bar != CISS_BAR) {
                if (pci_mapreg_map(pa, cfg_bar, PCI_MAPREG_TYPE_MEM, 0,
                    NULL, &sc->cfg_ioh, NULL, &cfgsz, 0)) {
                        printf(": can't map controller config space\n");  
                        bus_space_unmap(sc->iot, sc->ioh, size);
                        return;
                }
        } else {
                sc->cfg_ioh = sc->ioh;
                cfgsz = size;
        }

        if (sc->cfgoff + sizeof(struct ciss_config) > cfgsz) {
                printf(": unfit config space\n");
                bus_space_unmap(sc->iot, sc->ioh, size);
                if (cfg_bar != CISS_BAR)
                        bus_space_unmap(sc->iot, sc->cfg_ioh, cfgsz);
                return;
        }

        /* disable interrupts until ready */
        bus_space_write_4(sc->iot, sc->ioh, CISS_IMR,
            bus_space_read_4(sc->iot, sc->ioh, CISS_IMR) | sc->iem);

        if (pci_intr_map(pa, &ih)) {
                printf(": can't map interrupt\n");
                bus_space_unmap(sc->iot, sc->ioh, size);
                if (cfg_bar != CISS_BAR)
                        bus_space_unmap(sc->iot, sc->cfg_ioh, cfgsz);
                return;
        }
        intrstr = pci_intr_string(pa->pa_pc, ih);
        sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, ciss_intr, sc,
            sc->sc_dev.dv_xname);
        if (!sc->sc_ih) {
                printf(": can't establish interrupt");
                if (intrstr)
                        printf(" at %s", intrstr);
                printf("\n");
                bus_space_unmap(sc->iot, sc->ioh, size);
                if (cfg_bar != CISS_BAR)
                        bus_space_unmap(sc->iot, sc->cfg_ioh, cfgsz);
                return;
        }

        printf(": %s\n%s", intrstr, sc->sc_dev.dv_xname);

        if (ciss_attach(sc)) {
                pci_intr_disestablish(pa->pa_pc, sc->sc_ih);
                sc->sc_ih = NULL;
                bus_space_unmap(sc->iot, sc->ioh, size);
                if (cfg_bar != CISS_BAR)
                        bus_space_unmap(sc->iot, sc->cfg_ioh, cfgsz);
                return;
        }

        /* enable interrupts now */
        bus_space_write_4(sc->iot, sc->ioh, CISS_IMR,
            bus_space_read_4(sc->iot, sc->ioh, CISS_IMR) & ~sc->iem);
}

int
ciss_activate(struct device *self, int act)
{
        int ret = 0;

        ret = config_activate_children(self, act);

        switch (act) {
        case DVACT_POWERDOWN:
                ciss_shutdown(self);
                break;
        }

        return (ret);
}