/*      $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);
}

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