/*      $NetBSD: bi_nmi.c,v 1.9 2017/05/22 16:53:59 ragge Exp $    */
/*
* Copyright (c) 1999 Ludd, University of Lule}, Sweden.
* 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bi_nmi.c,v 1.9 2017/05/22 16:53:59 ragge Exp $");

#define _VAX_BUS_DMA_PRIVATE

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <sys/device.h>

#include <machine/nexus.h>
#include <machine/sid.h>
#include <machine/scb.h>
#include <machine/ka88.h>

#include <dev/bi/bivar.h>
#include <dev/bi/bireg.h>

#include "locators.h"

static int
bi_nmi_match(device_t parent, cfdata_t cf, void *aux)
{
       struct nmi_attach_args * const na = aux;

       if (cf->cf_loc[NMICF_SLOT] != NMICF_SLOT_DEFAULT &&
           cf->cf_loc[NMICF_SLOT] != na->na_slot)
               return 0;
       return na->na_slot < 10;
}

static void
bi_nmi_attach(device_t parent, device_t self, void *aux)
{
       struct nmi_attach_args * const na = aux;
       struct bi_softc * const sc = device_private(self);
       volatile int *v, *v2;
       extern int avail_end;
       int nid;

       sc->sc_dev = self;

       /*
        * Fill in bus specific data.
        */
       sc->sc_addr = (bus_addr_t)BI_BASE(na->na_slot, 0);
       sc->sc_iot = na->na_iot;        /* No special I/O handling */
       sc->sc_dmat = na->na_dmat;      /* No special DMA handling either */

       /* Must get the NBIB node number (interrupt routing) */
       /*
        * XXX - need a big cleanup here!
        */
       v = (int *)vax_map_physmem(NBIA_REGS(na->na_slot/2), 1);
       v[1] = v[1]; /* Clear errors */
       v[0] = 0x400 | CSR0_NBIIE | CSR0_LOOP; /* XXX */
       v2 = (int *)vax_map_physmem(sc->sc_addr, 1);
       v2[10] = v2[10] | 0x48;
       v2[8] = 0;
       v2[9] = (avail_end + 0x3ffff) & (~0x3ffff);
       v2[2] = v2[2];
       v2[1] = v2[1] | BICSR_BROKE;
       nid = v2[1] & 15;
       v[0] = (v[0] & ~CSR0_LOOP);
       DELAY(1000);

       sc->sc_intcpu = 1 << nid;
       sc->sc_lastiv = /* 0x400 * na->na_slot + */ 0x400;

       bi_attach(sc);
}

CFATTACH_DECL_NEW(bi_nmi, sizeof(struct bi_softc),
   bi_nmi_match, bi_nmi_attach, NULL, NULL);