/*      $NetBSD: if_sn_nubus.c,v 1.30 2021/02/20 09:36:30 rin 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_nubus.c,v 1.30 2021/02/20 09:36:30 rin Exp $");

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

#include <sys/rndsource.h>

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

#include <machine/bus.h>
#include <machine/viareg.h>

#include <dev/ic/dp83932reg.h>
#include <dev/ic/dp83932var.h>

#include <mac68k/nubus/nubus.h>
#include <mac68k/dev/if_snvar.h>

static int      sn_nubus_match(device_t, cfdata_t, void *);
static void     sn_nubus_attach(device_t, device_t, void *);
static int      sn_nb_card_vendor(bus_space_tag_t, bus_space_handle_t,
                   struct nubus_attach_args *);

CFATTACH_DECL_NEW(sn_nubus, sizeof(struct sonic_softc),
   sn_nubus_match, sn_nubus_attach, NULL, NULL);


static int
sn_nubus_match(device_t parent, cfdata_t cf, void *aux)
{
       struct nubus_attach_args *na = aux;
       bus_space_handle_t bsh;
       int rv;

       if (bus_space_map(na->na_tag,
           NUBUS_SLOT2PA(na->slot), NBMEMSIZE, 0, &bsh))
               return 0;

       rv = 0;

       if (na->category == NUBUS_CATEGORY_NETWORK &&
           na->type == NUBUS_TYPE_ETHERNET) {
               switch (sn_nb_card_vendor(na->na_tag, bsh, na)) {
               default:
                       break;

               case SN_VENDOR_APPLE:
               case SN_VENDOR_APPLE16:
               case SN_VENDOR_ASANTELC:
               case SN_VENDOR_DAYNA:
                       rv = 1;
                       break;
               }
       }

       bus_space_unmap(na->na_tag, bsh, NBMEMSIZE);

       return rv;
}

/*
* Install interface into kernel networking data structures
*/
static void
sn_nubus_attach(device_t parent, device_t self, void *aux)
{
       struct sonic_softc *sc = device_private(self);
       struct nubus_attach_args *na = aux;
       int i, success, offset;
       bus_space_tag_t bst;
       bus_space_handle_t bsh, tmp_bsh;
       uint8_t myaddr[ETHER_ADDR_LEN];
       const char *cardtype;

       bst = na->na_tag;
       if (bus_space_map(bst, NUBUS_SLOT2PA(na->slot), NBMEMSIZE, 0, &bsh)) {
               aprint_error(": failed to map memory space.\n");
               return;
       }

       sc->sc_dev = self;
       sc->sc_st = bst;
       sc->sc_dmat = na->na_dmat;

       cardtype = nubus_get_card_name(bst, bsh, na->fmt);

       success = 0;
       offset = 0;

       switch (sn_nb_card_vendor(bst, bsh, na)) {
       case SN_VENDOR_DAYNA:
               sc->sc_dcr = DCR_BMS | DCR_RFT1 | DCR_TFT0;
               sc->sc_dcr2 = 0;
               sc->sc_32bit = 1;       /* 32 bit card */

               if (bus_space_subregion(bst, bsh,
                   0x00180000, SONIC_NREGS * 4, &sc->sc_sh)) {
                       aprint_error(": failed to map register space.\n");
                       break;
               }

               if (bus_space_subregion(bst, bsh,
                   0x00ffe004, ETHER_ADDR_LEN, &tmp_bsh)) {
                       aprint_error(": failed to map ROM space.\n");
                       break;
               }

               sn_get_enaddr(bst, tmp_bsh, 0, myaddr);

               offset = 2;
               success = 1;
               break;

       case SN_VENDOR_APPLE:
               sc->sc_dcr = DCR_BMS | DCR_RFT1 | DCR_TFT0;
               sc->sc_dcr2 = 0;
               sc->sc_32bit = 1; /* 32 bit card */

               if (bus_space_subregion(bst, bsh,
                   0x0, SONIC_NREGS * 4, &sc->sc_sh)) {
                       aprint_error(": failed to map register space.\n");
                       break;
               }

               if (bus_space_subregion(bst, bsh,
                   0x40000, ETHER_ADDR_LEN, &tmp_bsh)) {
                       aprint_error(": failed to map ROM space.\n");
                       break;
               }

               sn_get_enaddr(bst, tmp_bsh, 0, myaddr);

               offset = 0;
               success = 1;
               break;

       case SN_VENDOR_APPLE16:
               sc->sc_dcr = DCR_EXBUS | DCR_BMS | DCR_PO1 |
                   DCR_RFT1 | DCR_TFT0;
               sc->sc_dcr2 = 0;
               sc->sc_32bit = 0; /* 16 bit card */

               if (bus_space_subregion(bst, bsh,
                   0x0, SONIC_NREGS * 4, &sc->sc_sh)) {
                       aprint_error(": failed to map register space.\n");
                       break;
               }

               if (bus_space_subregion(bst, bsh,
                   0x40000, ETHER_ADDR_LEN, &tmp_bsh)) {
                       aprint_error(": failed to map ROM space.\n");
                       break;
               }

               sn_get_enaddr(bst, tmp_bsh, 0, myaddr);

               offset = 0;
               success = 1;
               break;

       case SN_VENDOR_ASANTELC: /* Macintosh LC Ethernet Adapter */
               sc->sc_dcr = DCR_BMS | DCR_PO1 | DCR_RFT1 | DCR_TFT0;
               sc->sc_dcr2 = 0;
               sc->sc_32bit = 0; /* 16 bit card */

               if (bus_space_subregion(bst, bsh,
                   0x0, SONIC_NREGS * 4, &sc->sc_sh)) {
                       aprint_error(": failed to map register space.\n");
                       break;
               }

               if (bus_space_subregion(bst, bsh,
                   0x400000, ETHER_ADDR_LEN, &tmp_bsh)) {
                       aprint_error(": failed to map ROM space.\n");
                       break;
               }

               sn_get_enaddr(bst, tmp_bsh, 0, myaddr);

               offset = 0;
               success = 1;
               break;

       default:
               /*
                * You can't actually get this default, the snmatch
                * will fail for unknown hardware. If you're adding support
                * for a new card, the following defaults are a
                * good starting point.
                */
               sc->sc_dcr = DCR_SBUS | DCR_BMS | DCR_RFT1 | DCR_TFT0;
               sc->sc_dcr2 = 0;
               sc->sc_32bit = 1;
               success = 0;
               aprint_error(": unknown card: attachment incomplete.\n");
       }

       if (!success) {
               bus_space_unmap(bst, bsh, NBMEMSIZE);
               return;
       }

       /* Regs are addressed as words, big endian. */
       for (i = 0; i < SONIC_NREGS; i++) {
               sc->sc_regmap[i] = (bus_size_t)((i * 4) + offset);
       }

       sc->sc_bigendian = 1;

       aprint_error(": %s\n", cardtype);

       add_nubus_intr(na->slot, (void (*)(void *))sonic_intr, (void *)sc);

       sonic_attach(sc, myaddr);

       return;
}

static int
sn_nb_card_vendor(bus_space_tag_t bst, bus_space_handle_t bsh,
   struct nubus_attach_args *na)
{
       int vendor = SN_VENDOR_UNKNOWN;

       switch (na->drsw) {
       case NUBUS_DRSW_3COM:
               if (na->drhw == NUBUS_DRHW_APPLE_SNT)
                       vendor = SN_VENDOR_APPLE;
               else if (na->drhw == NUBUS_DRHW_APPLE_SN)
                       vendor = SN_VENDOR_APPLE16;
               break;
       case NUBUS_DRSW_APPLE:
               if (na->drhw == NUBUS_DRHW_ASANTE_LC)
                       vendor = SN_VENDOR_ASANTELC;
               else
                       vendor = SN_VENDOR_APPLE;
               break;
       case NUBUS_DRSW_TECHWORKS:
               vendor = SN_VENDOR_APPLE;
               break;
       case NUBUS_DRSW_GATOR:
               if (na->drhw == NUBUS_DRHW_KINETICS &&
                   strncmp(nubus_get_card_name(bst, bsh, na->fmt),
                   "EtherPort", 9) != 0)
                       vendor = SN_VENDOR_DAYNA;
               break;
       case NUBUS_DRSW_DAYNA:
               vendor = SN_VENDOR_DAYNA;
               break;
       }

       return vendor;
}

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