/*      $NetBSD: if_le.c,v 1.37 2022/05/29 10:45:05 rin Exp $   */

/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* 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.
*/

/*-
* Copyright (c) 1992, 1993
*      The Regents of the University of California.  All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* 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.
*
*      @(#)if_le.c     8.2 (Berkeley) 11/16/93
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_le.c,v 1.37 2022/05/29 10:45:05 rin Exp $");

#include "opt_inet.h"

#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 <uvm/uvm_extern.h>

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

#ifdef INET
#include <netinet/in.h>
#include <netinet/if_inarp.h>
#endif

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

#include <mvme68k/dev/pccreg.h>
#include <mvme68k/dev/pccvar.h>

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

#include <mvme68k/dev/if_lereg.h>
#include <mvme68k/dev/if_levar.h>

#include "ioconf.h"

int le_pcc_match(device_t, cfdata_t, void *);
void le_pcc_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(le_pcc, sizeof(struct le_softc),
   le_pcc_match, le_pcc_attach, NULL, NULL);

#if defined(_KERNEL_OPT)
#include "opt_ddb.h"
#endif

#ifdef DDB
#define hide
#else
#define hide    static
#endif

hide void le_pcc_wrcsr(struct lance_softc *, uint16_t, uint16_t);
hide uint16_t le_pcc_rdcsr(struct lance_softc *, uint16_t);

hide void
le_pcc_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
{
       struct le_softc *lsc;

       lsc = (struct le_softc *)sc;
       bus_space_write_2(lsc->sc_bust, lsc->sc_bush, LEPCC_RAP, port);
       bus_space_write_2(lsc->sc_bust, lsc->sc_bush, LEPCC_RDP, val);
}

hide uint16_t
le_pcc_rdcsr(struct lance_softc *sc, uint16_t port)
{
       struct le_softc *lsc;

       lsc = (struct le_softc *)sc;
       bus_space_write_2(lsc->sc_bust, lsc->sc_bush, LEPCC_RAP, port);
       return bus_space_read_2(lsc->sc_bust, lsc->sc_bush, LEPCC_RDP);
}

/* ARGSUSED */
int
le_pcc_match(device_t parent, cfdata_t cf, void *aux)
{
       struct pcc_attach_args *pa = aux;

       if (strcmp(pa->pa_name, le_cd.cd_name))
               return 0;

       pa->pa_ipl = cf->pcccf_ipl;
       return 1;
}

/* ARGSUSED */
void
le_pcc_attach(device_t parent, device_t self, void *aux)
{
       struct le_softc *lsc;
       struct lance_softc *sc;
       struct pcc_attach_args *pa;
       bus_dma_segment_t seg;
       int rseg;

       lsc = device_private(self);
       sc = &lsc->sc_am7990.lsc;
       sc->sc_dev = self;
       pa = aux;

       /* Map control registers. */
       lsc->sc_bust = pa->pa_bust;
       bus_space_map(pa->pa_bust, pa->pa_offset, 4, 0, &lsc->sc_bush);

       /* Get contiguous DMA-able memory for the lance */
       if (bus_dmamem_alloc(pa->pa_dmat, ether_data_buff_size, PAGE_SIZE, 0,
           &seg, 1, &rseg,
           BUS_DMA_NOWAIT | BUS_DMA_ONBOARD_RAM | BUS_DMA_24BIT)) {
               aprint_error(": Failed to allocate ether buffer\n");
               goto bad_unmap;
       }
       if (bus_dmamem_map(pa->pa_dmat, &seg, rseg, ether_data_buff_size,
           (void **)&sc->sc_mem, BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) {
               aprint_error(": Failed to map ether buffer\n");
               goto bad_free;
       }
       sc->sc_addr = seg.ds_addr;
       sc->sc_memsize = ether_data_buff_size;
       sc->sc_conf3 = LE_C3_BSWP;

       memcpy(sc->sc_enaddr, mvme_ea, ETHER_ADDR_LEN);

       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 = le_pcc_rdcsr;
       sc->sc_wrcsr = le_pcc_wrcsr;
       sc->sc_hwinit = NULL;

       am7990_config(&lsc->sc_am7990);

       evcnt_attach_dynamic(&lsc->sc_evcnt, EVCNT_TYPE_INTR,
           pccintr_evcnt(pa->pa_ipl), "ether", device_xname(self));

       pccintr_establish(PCCV_LE, am7990_intr, pa->pa_ipl, sc, &lsc->sc_evcnt);

       pcc_reg_write(sys_pcc, PCCREG_LANCE_INTR_CTRL,
           pa->pa_ipl | PCC_IENABLE);

       return;

bad_free:
       bus_dmamem_free(pa->pa_dmat, &seg, rseg);
bad_unmap:
       bus_space_unmap(pa->pa_bust, lsc->sc_bush, 4);
}

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