sys/arch/vax/bi/bi_nmi.c

   1 /*      $NetBSD: bi_nmi.c,v 1.6 2005/12/11 12:19:29 christos Exp $         */
   2 /*
   3  * Copyright (c) 1999 Ludd, University of Lule}, Sweden.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed at Ludd, University of
  17  *      Lule}, Sweden and its contributors.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: bi_nmi.c,v 1.6 2005/12/11 12:19:29 christos Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/device.h>
  38 #include <sys/systm.h>
  39
  40 #define _VAX_BUS_DMA_PRIVATE
  41 #include <machine/bus.h>
  42 #include <machine/nexus.h>
  43 #include <machine/sid.h>
  44 #include <machine/scb.h>
  45 #include <machine/cpu.h>
  46 #include <machine/ka88.h>
  47
  48 #include <dev/bi/bivar.h>
  49 #include <dev/bi/bireg.h>
  50
  51 #include "locators.h"
  52
  53 static int
  54 bi_nmi_match(device_t parent, cfdata_t cf, void *aux)
  55 {
  56         struct nmi_attach_args * const na = aux;
  57
  58         if (cf->cf_loc[NMICF_SLOT] != NMICF_SLOT_DEFAULT &&
  59             cf->cf_loc[NMICF_SLOT] != na->na_slot)
  60                 return 0;
  61         return na->na_slot < 10;
  62 }
  63
  64 static void
  65 bi_nmi_attach(device_t parent, device_t self, void *aux)
  66 {
  67         struct nmi_attach_args * const na = aux;
  68         struct bi_softc * const sc = device_private(self);
  69         volatile int *v, *v2;
  70         extern int avail_end;
  71         int nid;
  72
  73         sc->sc_dev = self;
  74
  75         /*
  76          * Fill in bus specific data.
  77          */
  78         sc->sc_addr = (bus_addr_t)BI_BASE(na->na_slot, 0);
  79         sc->sc_iot = na->na_iot;        /* No special I/O handling */
  80         sc->sc_dmat = na->na_dmat;      /* No special DMA handling either */
  81
  82         /* Must get the NBIB node number (interrupt routing) */
  83         /*
  84          * XXX - need a big cleanup here!
  85          */
  86         v = (int *)vax_map_physmem(NBIA_REGS(na->na_slot/2), 1);
  87         v[1] = v[1]; /* Clear errors */
  88         v[0] = 0x400 | CSR0_NBIIE | CSR0_LOOP; /* XXX */
  89         v2 = (int *)vax_map_physmem(sc->sc_addr, 1);
  90         v2[10] = v2[10] | 0x48;
  91         v2[8] = 0;
  92         v2[9] = (avail_end + 0x3ffff) & (~0x3ffff);
  93         v2[2] = v2[2];
  94         v2[1] = v2[1] | BICSR_BROKE;
  95         nid = v2[1] & 15;
  96         v[0] = (v[0] & ~CSR0_LOOP);
  97         DELAY(1000);
  98
  99         sc->sc_intcpu = 1 << nid;
 100         sc->sc_lastiv = /* 0x400 * na->na_slot + */ 0x400;
 101
 102         bi_attach(sc);
 103 }
 104
 105 CFATTACH_DECL_NEW(bi_nmi, sizeof(struct bi_softc),
 106     bi_nmi_match, bi_nmi_attach, NULL, NULL);