1 /*-
2 * Copyright (c) 2015-2016 Landon Fuller <landon@freebsd.org>
3 * Copyright (c) 2007 Bruce M. Simpson.
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 AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD: releng/12.0/sys/mips/broadcom/siba_nexus.c 326102 2017-11-22 20:27:46Z landonf $");
30
31 #include <sys/param.h>
32 #include <sys/kernel.h>
33 #include <sys/bus.h>
34 #include <sys/module.h>
35
36 #include <machine/bus.h>
37 #include <sys/rman.h>
38 #include <machine/resource.h>
39
40 #include <dev/bhnd/bhnd_ids.h>
41
42 #include <dev/bhnd/siba/sibareg.h>
43 #include <dev/bhnd/siba/sibavar.h>
44
45 #include "bcm_machdep.h"
46 #include "bcm_mipsvar.h"
47
48 #include "bhnd_nexusvar.h"
49
50 /*
51 * Supports siba(4) attachment to a MIPS nexus bus.
52 *
53 * Derived from Bruce M. Simpson' original siba(4) driver.
54 */
55
56 _Static_assert(SIBA_MAX_INTR == BCM_MIPS_NINTR, "SIBA incompatible with "
57 "generic NINTR");
58
59 static int
60 siba_nexus_probe(device_t dev)
61 {
62 int error;
63
64 if (bcm_get_platform()->cid.chip_type != BHND_CHIPTYPE_SIBA)
65 return (ENXIO);
66
67 if ((error = siba_probe(dev)) > 0)
68 return (error);
69
70 /* Set device description */
71 bhnd_set_default_bus_desc(dev, &bcm_get_platform()->cid);
72
73 return (BUS_PROBE_SPECIFIC);
74 }
75
76 static int
77 siba_nexus_attach(device_t dev)
78 {
79 int error;
80
81 /* Perform initial attach and enumerate our children. */
82 if ((error = siba_attach(dev)))
83 return (error);
84
85 /* Delegate remainder to standard bhnd method implementation */
86 if ((error = bhnd_generic_attach(dev)))
87 goto failed;
88
89 return (0);
90
91 failed:
92 siba_detach(dev);
93 return (error);
94 }
95
96 static device_method_t siba_nexus_methods[] = {
97 /* Device interface */
98 DEVMETHOD(device_probe, siba_nexus_probe),
99 DEVMETHOD(device_attach, siba_nexus_attach),
100
101 DEVMETHOD_END
102 };
103
104 DEFINE_CLASS_2(bhnd, siba_nexus_driver, siba_nexus_methods,
105 sizeof(struct siba_softc), bhnd_nexus_driver, siba_driver);
106
107 EARLY_DRIVER_MODULE(siba_nexus, nexus, siba_nexus_driver, bhnd_devclass, 0, 0,
108 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
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