1 /*-
2 * Copyright 2015 Justin Hibbits
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * From: FreeBSD: src/sys/powerpc/mpc85xx/pci_ocp.c,v 1.9 2010/03/23 23:46:28 marcel
29 */
30
31 #include <sys/cdefs.h>
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/ktr.h>
35 #include <sys/sockio.h>
36 #include <sys/mbuf.h>
37 #include <sys/malloc.h>
38 #include <sys/kernel.h>
39 #include <sys/module.h>
40 #include <sys/socket.h>
41 #include <sys/queue.h>
42 #include <sys/bus.h>
43 #include <sys/lock.h>
44 #include <sys/mutex.h>
45 #include <sys/rman.h>
46 #include <sys/endian.h>
47
48 #include <vm/vm.h>
49 #include <vm/pmap.h>
50
51 #include <dev/ofw/openfirm.h>
52 #include <dev/ofw/ofw_pci.h>
53 #include <dev/ofw/ofw_bus.h>
54 #include <dev/ofw/ofw_bus_subr.h>
55
56 #include <dev/pci/pcivar.h>
57 #include <dev/pci/pcireg.h>
58 #include <dev/pci/pcib_private.h>
59
60 #include <machine/intr_machdep.h>
61
62 #include "pcib_if.h"
63
64 DECLARE_CLASS(ofw_pcib_pci_driver);
65
66 struct fsl_pcib_softc {
67 /*
68 * This is here so that we can use pci bridge methods, too - the
69 * generic routines only need the dev, secbus and subbus members
70 * filled.
71 *
72 * XXX: This should be extracted from ofw_pcib_pci.c, and shared in a
73 * header.
74 */
75 struct pcib_softc ops_pcib_sc;
76 phandle_t ops_node;
77 struct ofw_bus_iinfo ops_iinfo;
78 };
79
80 static int
fsl_pcib_rc_probe(device_t dev)81 fsl_pcib_rc_probe(device_t dev)
82 {
83
84 if (pci_get_vendor(dev) != 0x1957)
85 return (ENXIO);
86 if (pci_get_progif(dev) != 0)
87 return (ENXIO);
88 if (pci_get_class(dev) != PCIC_PROCESSOR)
89 return (ENXIO);
90 if (pci_get_subclass(dev) != PCIS_PROCESSOR_POWERPC)
91 return (ENXIO);
92
93 device_set_desc(dev, "MPC85xx Root Complex bridge");
94
95 return (BUS_PROBE_DEFAULT);
96 }
97
98 static device_method_t fsl_pcib_rc_methods[] = {
99 DEVMETHOD(device_probe, fsl_pcib_rc_probe),
100 DEVMETHOD_END
101 };
102
103 static devclass_t fsl_pcib_rc_devclass;
104 DEFINE_CLASS_1(pcib, fsl_pcib_rc_driver, fsl_pcib_rc_methods,
105 sizeof(struct fsl_pcib_softc), ofw_pcib_pci_driver);
106 EARLY_DRIVER_MODULE(rcpcib, pci, fsl_pcib_rc_driver, fsl_pcib_rc_devclass, 0, 0,
107 BUS_PASS_BUS);
108