1/*	$NetBSD: osiop_sbdio.c,v 1.3 2008/03/29 09:11:35 tsutsui Exp $	*/
2
3/*-
4 * Copyright (c) 2001, 2005 Izumi Tsutsui.  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: osiop_sbdio.c,v 1.3 2008/03/29 09:11:35 tsutsui Exp $");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/device.h>
33
34#include <machine/bus.h>
35#include <machine/sbdiovar.h>
36
37#include <dev/scsipi/scsi_all.h>
38#include <dev/scsipi/scsipi_all.h>
39#include <dev/scsipi/scsiconf.h>
40
41#include <dev/ic/osiopreg.h>
42#include <dev/ic/osiopvar.h>
43
44int osiop_sbdio_match(device_t, cfdata_t, void *);
45void osiop_sbdio_attach(device_t, device_t, void *);
46int osiop_sbdio_intr(void *);
47
48CFATTACH_DECL_NEW(osiop_sbdio, sizeof(struct osiop_softc),
49    osiop_sbdio_match, osiop_sbdio_attach, NULL, NULL);
50
51int
52osiop_sbdio_match(device_t parent, cfdata_t cf, void *aux)
53{
54	struct sbdio_attach_args *sa = aux;
55
56	return strcmp(sa->sa_name, "osiop") ? 0 : 1;
57}
58
59void
60osiop_sbdio_attach(device_t parent, device_t self, void *aux)
61{
62	struct osiop_softc *sc = device_private(self);
63	struct sbdio_attach_args *sa = aux;
64	int error, scid;
65
66	sc->sc_dev = self;
67	sc->sc_dmat = sa->sa_dmat;
68	sc->sc_bst  = sa->sa_bust;
69
70	error = bus_space_map(sc->sc_bst, sa->sa_addr1, OSIOP_NREGS, 0,
71	    &sc->sc_reg);
72	if (error != 0) {
73		aprint_error(": can't map registers, error = %d\n", error);
74		return;
75	}
76
77	sc->sc_clock_freq = 25;	/* MHz */
78	sc->sc_ctest7 = 0;
79	sc->sc_dcntl = OSIOP_DCNTL_EA;
80	if (sa->sa_flags == 0x0001) /* TR2A */
81		sc->sc_ctest4 = OSIOP_CTEST4_MUX; /* Host bus multiplex mode */
82
83	scid = ffs(osiop_read_1(sc, OSIOP_SCID));
84	if (scid == 0)
85		scid = 7;
86	else
87		scid--;
88	sc->sc_id = scid;
89
90	intr_establish(sa->sa_irq, osiop_sbdio_intr, sc);
91
92	osiop_attach(sc);
93}
94
95int
96osiop_sbdio_intr(void *arg)
97{
98	struct osiop_softc *sc = arg;
99	uint8_t istat;
100
101	if (sc->sc_flags & OSIOP_INTSOFF)
102		return 0;
103
104	istat = osiop_read_1(sc, OSIOP_ISTAT);
105
106	if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0)
107		return 0;
108
109	/* Save interrupt details for the back-end interrupt handler */
110	sc->sc_sstat0 = osiop_read_1(sc, OSIOP_SSTAT0);
111	sc->sc_istat = istat;
112	sc->sc_dstat = osiop_read_1(sc, OSIOP_DSTAT);
113
114	osiop_intr(sc);
115
116	return 1;
117}
118