/*      $NetBSD: if_le_vsbus.c,v 1.29 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_vsbus.c,v 1.29 2022/05/29 10:45:05 rin Exp $");

#include "opt_inet.h"

#include <sys/param.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <sys/device.h>
#include <sys/socket.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/sid.h>
#include <machine/scb.h>
#include <machine/vsbus.h>

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

#include "ioconf.h"

struct le_softc {
        struct  am7990_softc sc_am7990; /* Must be first */
        struct  evcnt sc_intrcnt;
        bus_dmamap_t sc_dm;
        volatile uint16_t *sc_rap;
        volatile uint16_t *sc_rdp;
};

static  int     le_vsbus_match(device_t, cfdata_t, void *);
static  void    le_vsbus_attach(device_t, device_t, void *);
static  void    lewrcsr(struct lance_softc *, uint16_t, uint16_t);
static  uint16_t lerdcsr(struct lance_softc *, uint16_t);

CFATTACH_DECL_NEW(le_vsbus, sizeof(struct le_softc),
    le_vsbus_match, le_vsbus_attach, NULL, NULL);

void
lewrcsr(struct lance_softc *ls, uint16_t port, uint16_t val)
{
        struct le_softc * const sc = (void *)ls;

        *sc->sc_rap = port;
        *sc->sc_rdp = val;
}

uint16_t
lerdcsr(struct lance_softc *ls, uint16_t port)
{
        struct le_softc * const sc = (void *)ls;

        *sc->sc_rap = port;
        return *sc->sc_rdp;
}

static int
le_vsbus_match(device_t parent, cfdata_t cf, void *aux)
{
        struct vsbus_attach_args * const va = aux;
        volatile uint16_t *rdp, *rap;
        struct leinit initblock;
        bus_dmamap_t map;
        int i;
        int rv = 0;
        int error;

        if (vax_boardtype == VAX_BTYP_49 || vax_boardtype == VAX_BTYP_53)
                return 0;

        error = bus_dmamap_create(va->va_dmat, sizeof(initblock), 1,
            sizeof(initblock), 0, BUS_DMA_NOWAIT, &map);
        if (error) {
                return 0;
        }

        error = bus_dmamap_load(va->va_dmat, map, &initblock, 
            sizeof(initblock), NULL, BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
        if (error) {
                bus_dmamap_destroy(va->va_dmat, map);
                return 0;
        }

        memset(&initblock, 0, sizeof(initblock));

        rdp = (uint16_t *)va->va_addr;
        rap = rdp + 2;

        /* Make sure the chip is stopped. */
        *rap = LE_CSR0;
        *rdp = LE_C0_STOP;
        DELAY(100);
        *rap = LE_CSR1;
        *rdp = map->dm_segs->ds_addr & 0xffff;
        *rap = LE_CSR2;
        *rdp = (map->dm_segs->ds_addr >> 16) & 0xffff;
        *rap = LE_CSR0;
        *rdp = LE_C0_INIT|LE_C0_INEA;

        /* Wait for initialization to finish. */
        for (i = 100; i >= 0; i--) {
                DELAY(1000);
                /* Should have interrupted by now */
                if (*rdp & LE_C0_IDON)
                        rv = 1;
        } 
        *rap = LE_CSR0;
        *rdp = LE_C0_STOP;

        bus_dmamap_unload(va->va_dmat, map);
        bus_dmamap_destroy(va->va_dmat, map);
        return rv;
}

static void
le_vsbus_attach(device_t parent, device_t self, void *aux)
{
        struct vsbus_attach_args * const va = aux;
        struct le_softc * const sc = device_private(self);
        bus_dma_segment_t seg;
        int *lance_addr;
        int i, err, rseg;

        sc->sc_am7990.lsc.sc_dev = self;
        sc->sc_rdp = (uint16_t *) vax_map_physmem(NI_BASE, 1);
        sc->sc_rap = sc->sc_rdp + 2;

        /*
         * MD functions.
         */
        sc->sc_am7990.lsc.sc_rdcsr = lerdcsr;
        sc->sc_am7990.lsc.sc_wrcsr = lewrcsr;
        sc->sc_am7990.lsc.sc_nocarrier = NULL;

        scb_vecalloc(va->va_cvec, (void (*)(void *)) am7990_intr, sc,
                SCB_ISTACK, &sc->sc_intrcnt);
        evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
                device_xname(self), "intr");

        /*
         * Allocate a (DMA-safe) block for all descriptors and buffers.
         */

#define ALLOCSIZ (64 * 1024)
        err = bus_dmamem_alloc(va->va_dmat, ALLOCSIZ, PAGE_SIZE, 0, 
            &seg, 1, &rseg, BUS_DMA_NOWAIT);
        if (err) {
                aprint_error(": unable to alloc buffer block: err %d\n", err);
                return;
        }
        err = bus_dmamem_map(va->va_dmat, &seg, rseg, ALLOCSIZ, 
            (void **)&sc->sc_am7990.lsc.sc_mem,
            BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
        if (err) {
                aprint_error(": unable to map buffer block: err %d\n", err);
                goto bad_free;
        }
        bus_dmamap_create(va->va_dmat, ALLOCSIZ, rseg, ALLOCSIZ, 
            0, BUS_DMA_NOWAIT, &sc->sc_dm);
        if (err) {
                aprint_error(": unable to create DMA map: err %d\n", err);
                goto bad_unmap;
        }
        err = bus_dmamap_load(va->va_dmat, sc->sc_dm, sc->sc_am7990.lsc.sc_mem,
            ALLOCSIZ, NULL, BUS_DMA_NOWAIT);
        if (err) {
                aprint_error(": unable to load DMA map: err %d\n", err);
                goto bad_destroy;
        }
        aprint_normal(" buf 0x%lx-0x%lx", sc->sc_dm->dm_segs->ds_addr,
            sc->sc_dm->dm_segs->ds_addr + sc->sc_dm->dm_segs->ds_len - 1);
        sc->sc_am7990.lsc.sc_addr = sc->sc_dm->dm_segs->ds_addr & 0xffffff;
        sc->sc_am7990.lsc.sc_memsize = sc->sc_dm->dm_segs->ds_len;

        sc->sc_am7990.lsc.sc_copytodesc = lance_copytobuf_contig;
        sc->sc_am7990.lsc.sc_copyfromdesc = lance_copyfrombuf_contig;
        sc->sc_am7990.lsc.sc_copytobuf = lance_copytobuf_contig;
        sc->sc_am7990.lsc.sc_copyfrombuf = lance_copyfrombuf_contig;
        sc->sc_am7990.lsc.sc_zerobuf = lance_zerobuf_contig;

#ifdef LEDEBUG
        sc->sc_am7990.lsc.sc_debug = 1;
#endif
        /*
         * Get the ethernet address out of rom
         */
        lance_addr = (int *)vax_map_physmem(NI_ADDR, 1);
        for (i = 0; i < ETHER_ADDR_LEN; i++)
                sc->sc_am7990.lsc.sc_enaddr[i] = (u_char)lance_addr[i];
        vax_unmap_physmem((vaddr_t)lance_addr, 1);

        memcpy(sc->sc_am7990.lsc.sc_ethercom.ec_if.if_xname, device_xname(self),
            IFNAMSIZ);

        /* Prettier printout */
        aprint_normal("\n%s", device_xname(self));

        am7990_config(&sc->sc_am7990);

        return;

 bad_destroy:
        bus_dmamap_destroy(va->va_dmat, sc->sc_dm);
 bad_unmap:
        bus_dmamem_unmap(va->va_dmat, sc->sc_am7990.lsc.sc_mem, ALLOCSIZ);
 bad_free:
        bus_dmamem_free(va->va_dmat, &seg, rseg);
}