/* $NetBSD: if_le.c,v 1.7 2019/06/30 05:04:49 tsutsui Exp $ */

/*
* Copyright (c) 2013 Izumi Tsutsui.  All rights reserved.
* Copyright (c) 2003 Tetsuya Isaki. 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.
*
* 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.
*/
/*
* Copyright (c) 1982, 1990, 1993
*      The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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.
*
* from: hp300/dev/if_le.c      7.16 (Berkeley) 3/11/93
*
*      @(#)if_le.c     8.1 (Berkeley) 6/10/93
*/

#include <sys/param.h>

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

#include <net/if.h>
#include <net/if_ether.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>

#include <lib/libsa/stand.h>
#include <lib/libsa/net.h>
#include <lib/libsa/netif.h>

#include <luna68k/stand/boot/samachdep.h>

#define TRI_PORT_RAM_LANCE_OFFSET       0x10000

/* libsa netif_driver glue functions */
static int  le_match(struct netif *, void *);
static int  le_probe(struct netif *, void *);
static void le_init(struct iodesc *, void *);
static int  le_get(struct iodesc *, void *, size_t, saseconds_t);
static int  le_put(struct iodesc *, void *, size_t);
static void le_end(struct netif *);

static void myetheraddr(uint8_t *);

/* libsa netif glue stuff */
struct netif_stats le_stats;
struct netif_dif le_ifs[] = {
       { 0, 1, &le_stats, 0, 0, },
};

struct netif_driver le_netif_driver = {
       "le",
       le_match,
       le_probe,
       le_init,
       le_get,
       le_put,
       le_end,
       le_ifs,
       __arraycount(le_ifs),
};

#ifdef DEBUG
int debug;
#endif

int
leinit(int unit, void *addr)
{
       void *cookie;
       void *reg, *mem;
       uint8_t eaddr[6];

       reg = addr;
       mem = (void *)(TRI_PORT_RAM + TRI_PORT_RAM_LANCE_OFFSET);

       myetheraddr(eaddr);

       cookie = lance_attach(unit, reg, mem, eaddr);
       if (cookie == NULL)
               return 0;

       printf("le%d: Am7990 LANCE Ethernet, mem at 0x%x\n",
           unit, (uint32_t)mem);
       printf("le%d: Ethernet address = %s\n",
           unit, ether_sprintf(eaddr));

       return 1;
}

static int
le_match(struct netif *nif, void *machdep_hint)
{
       void *cookie;
       uint8_t *eaddr;

       /* XXX should check nif_unit and unit number in machdep_hint path */

       cookie = lance_cookie(nif->nif_unit);
       if (cookie == NULL)
               return 0;

       eaddr = lance_eaddr(cookie);
       if (eaddr == NULL)
               return 0;

       return 1;
}

static int
le_probe(struct netif *nif, void *machdep_hint)
{

       /* XXX what should be checked? */

       return 0;
}

static void
le_init(struct iodesc *desc, void *machdep_hint)
{
       struct netif *nif = desc->io_netif;
       struct netif_dif *dif = &nif->nif_driver->netif_ifs[nif->nif_unit];
       void *cookie;
       uint8_t *eaddr;

#ifdef DEBUG
       printf("%s\n", __func__);
#endif

       cookie = lance_cookie(nif->nif_unit);
       eaddr = lance_eaddr(cookie);

       lance_init(cookie);

       /* fill glue stuff */
       dif->dif_private = cookie;
       memcpy(desc->myea, eaddr, 6);
}

static int
le_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timeout)
{
       struct netif *nif = desc->io_netif;
       struct netif_dif *dif = &nif->nif_driver->netif_ifs[nif->nif_unit];
       void *cookie = dif->dif_private;
       int len = -1;
       saseconds_t t;

       t = getsecs() + timeout;
       while (getsecs() < t) {
               len = lance_get(cookie, pkt, len);
               if (len > 0)
                       break;
       }

       return len;
}

static int
le_put(struct iodesc *desc, void *pkt, size_t len)
{
       struct netif *nif = desc->io_netif;
       struct netif_dif *dif = &nif->nif_driver->netif_ifs[nif->nif_unit];
       void *cookie = dif->dif_private;
#ifdef DEBUG
       struct ether_header *eh;

       eh = pkt;
       printf("dst:  %s\n", ether_sprintf(eh->ether_dhost));
       printf("src:  %s\n", ether_sprintf(eh->ether_shost));
       printf("type: 0x%x\n", eh->ether_type & 0xffff);
#endif

       return lance_put(cookie, pkt, len) ? len : -1;
}

static void
le_end(struct netif *nif)
{
       struct netif_dif *dif = &nif->nif_driver->netif_ifs[nif->nif_unit];
       void *cookie = dif->dif_private;

#ifdef DEBUG
       printf("%s\n", __func__);
#endif
       lance_end(cookie);
}

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

       switch (machtype) {
       case LUNA_I:
               ea = (uint8_t *)0x4101FFE0;
               for (i = 0; i < ETHER_ADDR_LEN; i++) {
                       int u, l;

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

                       ether[i] = l | (u << 4);
                       ea += 2;
               }
               break;
       case LUNA_II:
               ds1220 = (void *)0xF1000004;
               loc = 12;
               for (i = 0; i < ETHER_ADDR_LEN; i++) {
                       unsigned int 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;
       }
}

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