/*      $NetBSD: if_sn_ap.c,v 1.13 2018/10/14 00:10:11 tsutsui Exp $    */

/*
 * Copyright (C) 1997 Allen Briggs
 * All rights reserved.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Allen Briggs
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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_sn_ap.c,v 1.13 2018/10/14 00:10:11 tsutsui Exp $");

#include "opt_inet.h"

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

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

#include <machine/cpu.h>
#include <machine/adrsmap.h>

#include <newsmips/apbus/apbusvar.h>
#include <newsmips/apbus/if_snreg.h>
#include <newsmips/apbus/if_snvar.h>

#include <newsmips/newsmips/machid.h>

#define SONIC_MACROM_OFFSET     0x40

#define SONIC_APBUS_REG_OFFSET  0x00010000
#define SONIC_APBUS_MEM_OFFSET  0x00020000
#define SONIC_APBUS_CTL_OFFSET  (-0x00100000)

static int      sn_ap_match(device_t, cfdata_t, void *);
static void     sn_ap_attach(device_t, device_t, void *);
static int      sn_ap_getaddr(struct sn_softc *, uint8_t *);

CFATTACH_DECL_NEW(sn_ap, sizeof(struct sn_softc),
    sn_ap_match, sn_ap_attach, NULL, NULL);

static int
sn_ap_match(device_t parent, cfdata_t cf, void *aux)
{
        struct apbus_attach_args *apa = aux;

        if (strcmp(apa->apa_name, "sonic") != 0)
                return 0;

        return 1;
}

/*
 * Install interface into kernel networking data structures
 */
static void
sn_ap_attach(device_t parent, device_t self, void *aux)
{
        struct sn_softc *sc = device_private(self);
        struct apbus_attach_args *apa = aux;
        uint8_t myaddr[ETHER_ADDR_LEN];
        uint32_t intrmask = 0;

        sc->sc_dev = self;
        sc->slotno = apa->apa_slotno;
        if (systype == NEWS4000 && sc->slotno == 0) {
                sc->sc_flags |= F_NWS40S0;
        }
        if ((sc->sc_flags & F_NWS40S0) != 0) {
                sc->sc_hwbase = (void *)apa->apa_hwbase;
                sc->sc_regbase = (void *)apa->apa_hwbase;
                sc->memory = (void *)NEWS4000_SONIC_MEMORY;
                sc->buffer = (void *)NEWS4000_SONIC_BUFFER;
        } else {
                sc->sc_hwbase = (void *)apa->apa_hwbase;
                sc->sc_regbase =
                    (void *)(apa->apa_hwbase + SONIC_APBUS_REG_OFFSET);
                sc->memory =
                    (void *)(apa->apa_hwbase + SONIC_APBUS_MEM_OFFSET);
        }

        aprint_normal(" slot%d addr 0x%lx", apa->apa_slotno, apa->apa_hwbase);

        if ((sc->sc_flags & F_NWS40S0) != 0) {
                sc->snr_dcr = DCR_STERM | DCR_TFT28;
                sc->snr_dcr2 = 0x0100;
        } else {
                sc->snr_dcr = DCR_WAIT0 | DCR_DMABLOCK | DCR_RFT16 | DCR_TFT16;
                sc->snr_dcr2 = 0;
                sc->snr_dcr |= DCR_EXBUS;
        }
        sc->bitmode = 1;

        if (sn_ap_getaddr(sc, myaddr)) {
                aprint_error(": failed to get MAC address\n");
                return;
        }

        aprint_normal("\n");

        /* snsetup returns 1 if something fails */
        if (snsetup(sc, myaddr))
                return;

        if (systype == NEWS5000) {
                intrmask = (apa->apa_slotno == 0) ?
                    NEWS5000_INT0_SONIC : NEWS5000_SLOTTOMASK(apa->apa_slotno);
        }
        if (systype == NEWS4000) {
                intrmask = (apa->apa_slotno == 0) ?
                    NEWS4000_INT0_SONIC : NEWS4000_SLOTTOMASK(apa->apa_slotno);
        }

        apbus_intr_establish(0, /* interrupt level (0 or 1) */
            intrmask,
            0, /* priority */
            snintr, sc, device_xname(self), apa->apa_ctlnum);
}

int
sn_ap_getaddr(struct sn_softc *sc, uint8_t *lladdr)
{

        if ((sc->sc_flags & F_NWS40S0) != 0) {
                extern struct idrom idrom;
                memcpy(lladdr, idrom.id_macadrs, sizeof(idrom.id_macadrs));
        } else {
                uint32_t *p;
                int i;

                p = (uint32_t *)((uint8_t *)sc->sc_hwbase +
                    SONIC_MACROM_OFFSET);
                for (i = 0; i < ETHER_ADDR_LEN; i++) {
                        int h = *p++ & 0x0f;
                        int l = *p++ & 0x0f;
                        *lladdr++ = (h << 4) + l;
                }
        }

        return 0;
}

#define APSONIC_INT_MASK        0x00007f00      /* XXX */
#define APSONIC_INT_REG(base)   (((u_long)(base) & 0xffc00000) | 0x00100000)

void
sn_md_init(struct sn_softc *sc)
{

        if ((sc->sc_flags & F_NWS40S0) != 0) {
                *(volatile uint32_t *)0xbf700000 = 1;
        } else {
                volatile uint32_t *reg =
                    (uint32_t *)APSONIC_INT_REG(sc->sc_hwbase);

                *reg = APSONIC_INT_MASK;
        }
        wbflush();
        apbus_wbflush();
        delay(10000);
}