bi_nmi.c revision 1.7 
1/*	$NetBSD: bi_nmi.c,v 1.7 2008/03/11 05:34:02 matt 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 1.7 2008/03/11 05:34:02 matt 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
53static int
54bi_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
64static void
65bi_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
105CFATTACH_DECL_NEW(bi_nmi, sizeof(struct bi_softc),
106    bi_nmi_match, bi_nmi_attach, NULL, NULL);
107