/*      $NetBSD: adv_pci.c,v 1.31 2022/09/25 17:52:25 thorpej 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.
 *
 * 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)
 *      ABP940UW - Bus-Master PCI Ultra-Wide (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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: adv_pci.c,v 1.31 2022/09/25 17:52:25 thorpej Exp $");

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

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

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

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

#define PCI_BASEADR_IO        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
adv_pci_match(device_t parent, cfdata_t match, void *aux)
{
        struct pci_attach_args *pa = aux;

        if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADVSYS)
                switch (PCI_PRODUCT(pa->pa_id)) {
                case PCI_PRODUCT_ADVSYS_1200A:
                case PCI_PRODUCT_ADVSYS_1200B:
                case PCI_PRODUCT_ADVSYS_ULTRA:
                        return (1);
                }

        return 0;
}

static void
adv_pci_attach(device_t parent, device_t self, void *aux)
{
        struct pci_attach_args *pa = aux;
        ASC_SOFTC      *sc = device_private(self);
        bus_space_tag_t iot;
        bus_space_handle_t ioh;
        pci_intr_handle_t ih;
        pci_chipset_tag_t pc = pa->pa_pc;
        u_int32_t       command;
        const char     *intrstr;
        char intrbuf[PCI_INTRSTR_LEN];

        aprint_naive(": SCSI controller\n");

        sc->sc_dev = self;
        sc->sc_flags = 0x0;
        if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADVSYS)
                switch (PCI_PRODUCT(pa->pa_id)) {
                case PCI_PRODUCT_ADVSYS_1200A:
                        aprint_normal(": AdvanSys ASC1200A SCSI adapter\n");
                        break;

                case PCI_PRODUCT_ADVSYS_1200B:
                        aprint_normal(": AdvanSys ASC1200B SCSI adapter\n");
                        break;

                case PCI_PRODUCT_ADVSYS_ULTRA:
                        switch (PCI_REVISION(pa->pa_class)) {
                        case ASC_PCI_REVISION_3050:
                                aprint_normal(
                                    ": AdvanSys ABP-9xxUA SCSI adapter\n");
                                break;

                        case ASC_PCI_REVISION_3150:
                                aprint_normal(
                                    ": AdvanSys ABP-9xxU SCSI adapter\n");
                                break;
                        }
                        break;

                default:
                        aprint_error(": unknown model!\n");
                        return;
                }


        /*
         * Make sure IO/MEM/MASTER are enabled
         */
        command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
        if ((command & (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE |
                        PCI_COMMAND_MASTER_ENABLE)) !=
            (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE |
             PCI_COMMAND_MASTER_ENABLE)) {
                pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
                 command | (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE |
                            PCI_COMMAND_MASTER_ENABLE));
        }
        /*
         * 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
         */
        if (pci_mapreg_map(pa, PCI_BASEADR_IO, PCI_MAPREG_TYPE_IO, 0,
                        &iot, &ioh, NULL, NULL)) {
                aprint_error_dev(sc->sc_dev, "unable to map device registers\n");
                return;
        }

        ASC_SET_CHIP_CONTROL(iot, ioh, ASC_CC_HALT);
        ASC_SET_CHIP_STATUS(iot, ioh, 0);

        sc->sc_iot = iot;
        sc->sc_ioh = ioh;
        sc->sc_dmat = pa->pa_dmat;
        sc->pci_device_id = pa->pa_id;
        sc->bus_type = ASC_IS_PCI;
        sc->chip_version = ASC_GET_CHIP_VER_NO(iot, ioh);

        /*
         * Initialize the board
         */
        if (adv_init(sc))
                panic("adv_pci_attach: adv_init failed");

        /*
         * Map Interrupt line
         */
        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));

        /*
         * Establish Interrupt handler
         */
        sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_BIO, adv_intr, sc,
            device_xname(self));
        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);

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

CFATTACH_DECL_NEW(adv_pci, sizeof(ASC_SOFTC),
    adv_pci_match, adv_pci_attach, NULL, NULL);