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
48static int
49bi_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
59static void
60bi_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
100CFATTACH_DECL_NEW(bi_nmi, sizeof(struct bi_softc),
101    bi_nmi_match, bi_nmi_attach, NULL, NULL);
102