xref: /src/sys/arch/mvme68k/dev/if_le.c

/*	$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);
}