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      1 /*	$NetBSD: bi_nmi.c,v 1.9 2017/05/22 16:53:59 ragge 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  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include <sys/cdefs.h>
     28 __KERNEL_RCSID(0, "$NetBSD: bi_nmi.c,v 1.9 2017/05/22 16:53:59 ragge Exp $");
     29 
     30 #define _VAX_BUS_DMA_PRIVATE
     31 
     32 #include <sys/param.h>
     33 #include <sys/systm.h>
     34 #include <sys/bus.h>
     35 #include <sys/cpu.h>
     36 #include <sys/device.h>
     37 
     38 #include <machine/nexus.h>
     39 #include <machine/sid.h>
     40 #include <machine/scb.h>
     41 #include <machine/ka88.h>
     42 
     43 #include <dev/bi/bivar.h>
     44 #include <dev/bi/bireg.h>
     45 
     46 #include "locators.h"
     47 
     48 static int
     49 bi_nmi_match(device_t parent, cfdata_t cf, void *aux)
     50 {
     51 	struct nmi_attach_args * const na = aux;
     52 
     53 	if (cf->cf_loc[NMICF_SLOT] != NMICF_SLOT_DEFAULT &&
     54 	    cf->cf_loc[NMICF_SLOT] != na->na_slot)
     55 		return 0;
     56 	return na->na_slot < 10;
     57 }
     58 
     59 static void
     60 bi_nmi_attach(device_t parent, device_t self, void *aux)
     61 {
     62 	struct nmi_attach_args * const na = aux;
     63 	struct bi_softc * const sc = device_private(self);
     64 	volatile int *v, *v2;
     65 	extern int avail_end;
     66 	int nid;
     67 
     68 	sc->sc_dev = self;
     69 
     70 	/*
     71 	 * Fill in bus specific data.
     72 	 */
     73 	sc->sc_addr = (bus_addr_t)BI_BASE(na->na_slot, 0);
     74 	sc->sc_iot = na->na_iot;	/* No special I/O handling */
     75 	sc->sc_dmat = na->na_dmat;	/* No special DMA handling either */
     76 
     77 	/* Must get the NBIB node number (interrupt routing) */
     78 	/*
     79 	 * XXX - need a big cleanup here!
     80 	 */
     81 	v = (int *)vax_map_physmem(NBIA_REGS(na->na_slot/2), 1);
     82 	v[1] = v[1]; /* Clear errors */
     83 	v[0] = 0x400 | CSR0_NBIIE | CSR0_LOOP; /* XXX */
     84 	v2 = (int *)vax_map_physmem(sc->sc_addr, 1);
     85 	v2[10] = v2[10] | 0x48;
     86 	v2[8] = 0;
     87 	v2[9] = (avail_end + 0x3ffff) & (~0x3ffff);
     88 	v2[2] = v2[2];
     89 	v2[1] = v2[1] | BICSR_BROKE;
     90 	nid = v2[1] & 15;
     91 	v[0] = (v[0] & ~CSR0_LOOP);
     92 	DELAY(1000);
     93 
     94 	sc->sc_intcpu = 1 << nid;
     95 	sc->sc_lastiv = /* 0x400 * na->na_slot + */ 0x400;
     96 
     97 	bi_attach(sc);
     98 }
     99 
    100 CFATTACH_DECL_NEW(bi_nmi, sizeof(struct bi_softc),
    101     bi_nmi_match, bi_nmi_attach, NULL, NULL);
    102