/*      $OpenBSD: if_le.c,v 1.13 2024/11/28 13:13:04 aoyama Exp $       */
/*      $NetBSD: if_le.c,v 1.33 1996/11/20 18:56:52 gwr Exp $   */

/*-
 * Copyright (c) 1996 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Adam Glass and Gordon W. Ross.
 *
 * 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 REGENTS 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.
 */

/* based on OpenBSD: sys/arch/sun3/dev/if_le.c */

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

#include <net/if.h>

#include <netinet/in.h>
#include <netinet/if_ether.h>

#include <net/if_media.h>

#include <machine/autoconf.h>
#include <machine/board.h>
#include <machine/cpu.h>

#include <dev/ic/lancereg.h>
#include <dev/ic/lancevar.h>
#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>

#include <luna88k/luna88k/isr.h>

#define TRI_PORT_RAM_LANCE_OFFSET       0x10000 /* first 64KB is used by XP */

#ifndef TRI_PORT_RAM_LANCE_SIZE
#define TRI_PORT_RAM_LANCE_SIZE         0x10000 /* 64KB is the default */
#endif

/*
 * LANCE registers.
 * The real stuff is in dev/ic/am7990reg.h
 */
struct lereg1 {
        volatile uint16_t       ler1_rdp;       /* data port */
        volatile unsigned       :16 ;           /* 16bit gap */
        volatile uint16_t       ler1_rap;       /* register select port */
};

/*
 * Ethernet software status per interface.
 * The real stuff is in dev/ic/am7990var.h
 */
struct  le_softc {
        struct  am7990_softc sc_am7990; /* glue to MI code */

        struct  lereg1 *sc_r1;          /* LANCE registers */
};

int     le_match(struct device *, void *, void *);
void    le_attach(struct device *, struct device *, void *);

const struct cfattach le_ca = {
        sizeof(struct le_softc), le_match, le_attach
};

void lewrcsr(struct lance_softc *, uint16_t, uint16_t);
uint16_t lerdcsr(struct lance_softc *, uint16_t);
void myetheraddr(uint8_t *);

void
lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
{
        register struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;

        ler1->ler1_rap = port;
        ler1->ler1_rdp = val;
}

uint16_t
lerdcsr(struct lance_softc *sc, uint16_t port)
{
        register struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
        uint16_t val;

        ler1->ler1_rap = port;
        val = ler1->ler1_rdp;
        return (val);
}

int
le_match(struct device *parent, void *cf, void *aux)
{
        struct mainbus_attach_args *ma = aux;

        if (strcmp(ma->ma_name, le_cd.cd_name))
                return (0);

        return (1);
}

void
le_attach(struct device *parent, struct device *self, void *aux)
{
        struct le_softc *lesc = (struct le_softc *)self;
        struct lance_softc *sc = &lesc->sc_am7990.lsc;
        struct mainbus_attach_args *ma = aux;

        lesc->sc_r1 = (struct lereg1 *)ma->ma_addr;     /* LANCE */

        sc->sc_mem = (void *)(TRI_PORT_RAM + TRI_PORT_RAM_LANCE_OFFSET);
        sc->sc_conf3 = LE_C3_BSWP;
        sc->sc_addr = (u_long)sc->sc_mem & 0xffffff;
        sc->sc_memsize = TRI_PORT_RAM_LANCE_SIZE;

        myetheraddr(sc->sc_arpcom.ac_enaddr);

        sc->sc_copytodesc = lance_copytobuf_contig;
        sc->sc_copyfromdesc = lance_copyfrombuf_contig;
        sc->sc_copytobuf = lance_copytobuf_contig;
        sc->sc_copyfrombuf = lance_copyfrombuf_contig;
        sc->sc_zerobuf = lance_zerobuf_contig;

        sc->sc_rdcsr = lerdcsr;
        sc->sc_wrcsr = lewrcsr;
        sc->sc_hwreset = NULL;
        sc->sc_hwinit = NULL;

        am7990_config(&lesc->sc_am7990);

        isrlink_autovec(am7990_intr, (void *)sc, ma->ma_ilvl, ISRPRI_NET,
            self->dv_xname);
}

/*
 * Partially taken from NetBSD/luna68k
 * 
 * LUNA-88K has FUSE ROM, which contains MAC address.  The FUSE ROM
 * contents are stored in fuse_rom_data[] during cpu_startup(). 
 * 
 * LUNA-88K2 has 16Kbit NVSRAM on its ethercard, whose contents are
 * accessible 4bit-wise by ctl register operation.  The register is
 * mapped at 0xF1000008.
 */

extern int machtype;
extern char fuse_rom_data[];

void
myetheraddr(uint8_t *ether)
{
        unsigned i, loc;
        volatile struct { uint32_t ctl; } *ds1220;

        switch (machtype) {
        case LUNA_88K:
                /*
                 * fuse_rom_data[] begins with "ENADDR=00000Axxxxxx"
                 */
                loc = 7;
                for (i = 0; i < 6; i++) {
                        int u, l;

                        u = fuse_rom_data[loc];
                        u = (u < 'A') ? u & 0xf : u - 'A' + 10;
                        l = fuse_rom_data[loc + 1];
                        l = (l < 'A') ? l & 0xf : l - 'A' + 10;

                        ether[i] = l | (u << 4);
                        loc += 2;
                }
                break;
        case LUNA_88K2: 
                ds1220 = (void *)(LANCE_ADDR + 8);
                loc = 12;
                for (i = 0; i < 6; i++) {
                        unsigned u, l, hex;

                        ds1220->ctl = (loc) << 16;
                        u = 0xf0 & (ds1220->ctl >> 12);
                        ds1220->ctl = (loc + 1) << 16;
                        l = 0x0f & (ds1220->ctl >> 16);
                        hex = (u < '9') ? l : l + 9;

                        ds1220->ctl = (loc + 2) << 16;
                        u = 0xf0 & (ds1220->ctl >> 12);
                        ds1220->ctl = (loc + 3) << 16;
                        l = 0x0f & (ds1220->ctl >> 16);

                        ether[i] = ((u < '9') ? l : l + 9) | (hex << 4);
                        loc += 4;
                }
                break;
        default:
                ether[0] = 0x00; ether[1] = 0x00; ether[2] = 0x0a;
                ether[3] = 0xDE; ether[4] = 0xAD; ether[5] = 0x00;
                break;
        }
}