2 * Copyright 2015 Justin Hibbits
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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
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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.
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
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28 * From: FreeBSD: src/sys/powerpc/mpc85xx/pci_ocp.c,v 1.9 2010/03/23 23:46:28 marcel
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/sockio.h>
39 #include <sys/malloc.h>
40 #include <sys/kernel.h>
41 #include <sys/module.h>
42 #include <sys/socket.h>
43 #include <sys/queue.h>
46 #include <sys/mutex.h>
48 #include <sys/endian.h>
53 #include <dev/ofw/openfirm.h>
54 #include <dev/ofw/ofw_pci.h>
55 #include <dev/ofw/ofw_bus.h>
56 #include <dev/ofw/ofw_bus_subr.h>
58 #include <dev/pci/pcivar.h>
59 #include <dev/pci/pcireg.h>
60 #include <dev/pci/pcib_private.h>
62 #include <machine/intr_machdep.h>
66 struct fsl_pcib_softc {
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
72 struct pcib_softc ops_pcib_sc;
74 struct ofw_bus_iinfo ops_iinfo;
78 fsl_pcib_rc_probe(device_t dev)
81 if (pci_get_vendor(dev) != 0x1957)
83 if (pci_get_progif(dev) != 0)
85 if (pci_get_class(dev) != PCIC_PROCESSOR)
87 if (pci_get_subclass(dev) != PCIS_PROCESSOR_POWERPC)
90 return (BUS_PROBE_DEFAULT);
94 fsl_pcib_rc_attach(device_t dev)
96 struct fsl_pcib_softc *sc;
98 sc = device_get_softc(dev);
99 sc->ops_pcib_sc.dev = dev;
100 sc->ops_node = ofw_bus_get_node(dev);
102 ofw_bus_setup_iinfo(sc->ops_node, &sc->ops_iinfo,
105 pcib_attach_common(dev);
106 return (pcib_attach_child(dev));
110 fsl_pcib_rc_get_node(device_t bridge, device_t dev)
112 /* We have only one child, the PCI bus, so pass it our node */
114 return (ofw_bus_get_node(bridge));
118 fsl_pcib_rc_route_interrupt(device_t bridge, device_t dev, int intpin)
120 struct fsl_pcib_softc *sc;
121 struct ofw_bus_iinfo *ii;
122 struct ofw_pci_register reg;
123 cell_t pintr, mintr[2];
127 sc = device_get_softc(bridge);
129 if (ii->opi_imapsz > 0) {
132 /* Fabricate imap information if this isn't an OFW device */
133 bzero(®, sizeof(reg));
134 reg.phys_hi = (pci_get_bus(dev) << OFW_PCI_PHYS_HI_BUSSHIFT) |
135 (pci_get_slot(dev) << OFW_PCI_PHYS_HI_DEVICESHIFT) |
136 (pci_get_function(dev) << OFW_PCI_PHYS_HI_FUNCTIONSHIFT);
138 intrcells = ofw_bus_lookup_imap(ofw_bus_get_node(dev), ii, ®,
139 sizeof(reg), &pintr, sizeof(pintr), mintr, sizeof(mintr),
143 * If we've found a mapping, return it and don't map
144 * it again on higher levels - that causes problems
145 * in some cases, and never seems to be required.
147 mintr[0] = ofw_bus_map_intr(dev, iparent, intrcells,
151 } else if (intpin >= 1 && intpin <= 4) {
153 * When an interrupt map is missing, we need to do the
154 * standard PCI swizzle and continue mapping at the parent.
156 return (pcib_route_interrupt(bridge, dev, intpin));
158 return (PCIB_ROUTE_INTERRUPT(device_get_parent(device_get_parent(
159 bridge)), bridge, intpin));
162 static device_method_t fsl_pcib_rc_methods[] = {
163 DEVMETHOD(device_probe, fsl_pcib_rc_probe),
164 DEVMETHOD(device_attach, fsl_pcib_rc_attach),
167 DEVMETHOD(pcib_route_interrupt, fsl_pcib_rc_route_interrupt),
168 DEVMETHOD(pcib_request_feature, pcib_request_feature_allow),
170 /* ofw_bus interface */
171 DEVMETHOD(ofw_bus_get_node, fsl_pcib_rc_get_node),
175 static devclass_t fsl_pcib_rc_devclass;
176 DEFINE_CLASS_1(pcib, fsl_pcib_rc_driver, fsl_pcib_rc_methods,
177 sizeof(struct fsl_pcib_softc), pcib_driver);
178 DRIVER_MODULE(rcpcib, pci, fsl_pcib_rc_driver, fsl_pcib_rc_devclass, 0, 0);