/*      $NetBSD: if_tscs_isa.c,v 1.16 2015/04/13 16:33:24 riastradh Exp $       */

/*-
 * Copyright (c) 2005 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jesse Off
 *
 * 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: if_tscs_isa.c,v 1.16 2015/04/13 16:33:24 riastradh Exp $");

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

#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>

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

#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>

#include <dev/ic/cs89x0reg.h>
#include <dev/ic/cs89x0var.h>
#include <dev/isa/cs89x0isavar.h>

static int      tscs_isa_probe(device_t, cfdata_t, void *);
static void     tscs_isa_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(tscs_isa, sizeof(struct cs_softc_isa),
    tscs_isa_probe, tscs_isa_attach, NULL, NULL);

int
tscs_isa_probe(device_t parent, cfdata_t cf, void *aux)
{
        struct isa_attach_args *ia = aux;
        bus_space_tag_t iot = ia->ia_iot;
        bus_space_handle_t ioh, pldh;
        struct cs_softc sc;
        int rv = 0, have_io = 0, have_pld = 0, irq;
        u_int8_t jpcfg;

        if (ia->ia_nio < 1)
                return (0);
        if (ia->ia_nirq < 1)
                return (0);

        if (ISA_DIRECT_CONFIG(ia))
                return (0);

        /*
         * Disallow wildcarded I/O base.
         */
        if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
                return (0);

        /*
         * Map the I/O space.
         */
        if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr - 0x300, 9,
            0, &pldh))
                goto out;
        have_pld = 1;

        if ((bus_space_read_1(ia->ia_iot, pldh, 0)  & 0xf) == 0xa &&
            (bus_space_read_1(ia->ia_iot, pldh, 0x8)  & 0xf) == 0x5 &&
            (bus_space_read_1(ia->ia_iot, pldh, 0x8)  & 0xf) == 0xa) {
                bus_space_read_1(ia->ia_iot, pldh, 0x8); /* PLD rev. */
                jpcfg = bus_space_read_1(ia->ia_iot, pldh, 0x8) & 0xf;
        } else {
                goto out;
        }

        if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, CS8900_IOSIZE,
            0, &ioh))
                goto out;
        have_io = 1;

        memset(&sc, 0, sizeof sc);
        sc.sc_iot = iot;
        sc.sc_ioh = ioh;
        /* Verify that it's a Crystal product. */
        if (CS_READ_PACKET_PAGE_IO(&sc, PKTPG_EISA_NUM) !=
            EISA_NUM_CRYSTAL)
                goto out;

        /*
         * Verify that it's a supported chip.
         */
        switch (CS_READ_PACKET_PAGE_IO(&sc, PKTPG_PRODUCT_ID) &
            PROD_ID_MASK) {
        case PROD_ID_CS8900:
                break;
        default:
                /* invalid product ID */
                goto out;
        }

        /*
         * If the IRQ wasn't specified, get it from the EEPROM.
         */
        if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) {
                switch (jpcfg >> 1) {
                case 0x1:
                        irq = 5;
                        break;
                case 0x2:
                        irq = 6;
                        break;
                case 0x4:
                        irq = 7;
                        break;
                default:
                        goto out;
                }
        } else
                irq = ia->ia_irq[0].ir_irq;

        ia->ia_nio = 1;
        ia->ia_io[0].ir_size = CS8900_IOSIZE;
        ia->ia_niomem = 0;
        ia->ia_nirq = 1;
        ia->ia_ndrq = 0;
        ia->ia_irq[0].ir_irq = irq;

        rv = 1;

 out:
        if (have_io)
                bus_space_unmap(iot, ioh, CS8900_IOSIZE);
        if (have_pld)
                bus_space_unmap(iot, pldh, 0x9);

        return (rv);
}

void
tscs_isa_attach(device_t parent, device_t self, void *aux)
{
        struct cs_softc_isa *isc = device_private(self);
        struct cs_softc *sc = &isc->sc_cs;
        struct isa_attach_args *ia = aux;

        sc->sc_dev = self;
        isc->sc_ic = ia->ia_ic;
        sc->sc_iot = ia->ia_iot;
        sc->sc_memt = ia->ia_memt;

        isc->sc_drq = -1;
        sc->sc_irq = ia->ia_irq[0].ir_irq;

        printf(": Technologic Systems TS-ETH10\n");

        /*
         * Map the device.
         */
        if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, CS8900_IOSIZE,
            0, &sc->sc_ioh)) {
                aprint_error_dev(self, "unable to map i/o space\n");
                return;
        }

        sc->sc_ih = isa_intr_establish(ia->ia_ic, sc->sc_irq, IST_EDGE,
            IPL_NET, cs_intr, sc);
        if (sc->sc_ih == NULL) {
                aprint_error_dev(self, "unable to establish interrupt\n");
                return;
        }

        sc->sc_dma_chipinit = NULL;
        sc->sc_dma_attach = NULL;
        sc->sc_dma_process_rx = NULL;

        /* all jumper routed IRQs are connected to pseudo CS8900 IRQ 5 */
        sc->sc_irq = 5;

        cs_attach(sc, NULL, NULL, 0, 0);
}