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bi_nmi.c revision 1.6 
      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 extern	struct vax_bus_space vax_mem_bus_space;
     54 extern	struct vax_bus_dma_tag vax_bus_dma_tag;
     55 
     56 static int
     57 bi_nmi_match(struct device *parent, struct cfdata *cf, void *aux)
     58 {
     59 	struct nmi_attach_args *na = aux;
     60 
     61 	if (cf->cf_loc[NMICF_SLOT] != NMICF_SLOT_DEFAULT &&
     62 	    cf->cf_loc[NMICF_SLOT] != na->slot)
     63 		return 0;
     64 	if (na->slot < 10)
     65 		return 1;
     66         return 0;
     67 }
     68 
     69 static void
     70 bi_nmi_attach(struct device *parent, struct device *self, void *aux)
     71 {
     72 	struct nmi_attach_args *na = aux;
     73 	struct bi_softc *sc = (void *)self;
     74 	volatile int *v, *v2;
     75 	extern int avail_end;
     76 	int nid;
     77 
     78 	/*
     79 	 * Fill in bus specific data.
     80 	 */
     81 	sc->sc_addr = (bus_addr_t)BI_BASE(na->slot, 0);
     82 	sc->sc_iot = &vax_mem_bus_space; /* No special I/O handling */
     83 	sc->sc_dmat = &vax_bus_dma_tag;	/* No special DMA handling either */
     84 
     85 	/* Must get the NBIB node number (interrupt routing) */
     86 	/*
     87 	 * XXX - need a big cleanup here!
     88 	 */
     89 	v = (int *)vax_map_physmem(NBIA_REGS(na->slot/2), 1);
     90 	v[1] = v[1]; /* Clear errors */
     91 	v[0] = 0x400 | CSR0_NBIIE | CSR0_LOOP; /* XXX */
     92 	v2 = (int *)vax_map_physmem(sc->sc_addr, 1);
     93 	v2[10] = v2[10] | 0x48;
     94 	v2[8] = 0;
     95 	v2[9] = (avail_end + 0x3ffff) & (~0x3ffff);
     96 	v2[2] = v2[2];
     97 	v2[1] = v2[1] | BICSR_BROKE;
     98 	nid = v2[1] & 15;
     99 	v[0] = (v[0] & ~CSR0_LOOP);
    100 	DELAY(1000);
    101 
    102 	sc->sc_intcpu = 1 << nid;
    103 	sc->sc_lastiv = /* 0x400 * na->slot + */ 0x400;
    104 
    105 	bi_attach(sc);
    106 }
    107 
    108 CFATTACH_DECL(bi_nmi, sizeof(struct bi_softc),
    109     bi_nmi_match, bi_nmi_attach, NULL, NULL);
    110