1 /*-
2 * Copyright 2003 by Peter Grehan. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
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,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * 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
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/module.h>
35 #include <sys/bus.h>
36 #include <sys/conf.h>
37 #include <sys/kernel.h>
38
39 #include <dev/ofw/ofw_bus.h>
40 #include <dev/ofw/ofw_bus_subr.h>
41 #include <dev/ofw/openfirm.h>
42
43 #include <machine/bus.h>
44 #include <machine/intr_machdep.h>
45 #include <machine/md_var.h>
46 #include <machine/pio.h>
47 #include <machine/resource.h>
48
49 #include <vm/vm.h>
50 #include <vm/pmap.h>
51
52 #include <sys/rman.h>
53
54 #include <machine/openpicvar.h>
55
56 #include "pic_if.h"
57
58 /*
59 * OFW interface
60 */
61 static int openpic_ofw_probe(device_t);
62 static int openpic_ofw_attach(device_t);
63
64 static void openpic_ofw_translate_code(device_t, u_int irq, int code,
65 enum intr_trigger *trig, enum intr_polarity *pol);
66
67 static device_method_t openpic_ofw_methods[] = {
68 /* Device interface */
69 DEVMETHOD(device_probe, openpic_ofw_probe),
70 DEVMETHOD(device_attach, openpic_ofw_attach),
71
72 /* PIC interface */
73 DEVMETHOD(pic_bind, openpic_bind),
74 DEVMETHOD(pic_config, openpic_config),
75 DEVMETHOD(pic_dispatch, openpic_dispatch),
76 DEVMETHOD(pic_enable, openpic_enable),
77 DEVMETHOD(pic_eoi, openpic_eoi),
78 DEVMETHOD(pic_ipi, openpic_ipi),
79 DEVMETHOD(pic_mask, openpic_mask),
80 DEVMETHOD(pic_unmask, openpic_unmask),
81
82 DEVMETHOD(pic_translate_code, openpic_ofw_translate_code),
83
84 DEVMETHOD_END
85 };
86
87 static driver_t openpic_ofw_driver = {
88 "openpic",
89 openpic_ofw_methods,
90 sizeof(struct openpic_softc),
91 };
92
93 DRIVER_MODULE(openpic, ofwbus, openpic_ofw_driver, openpic_devclass, 0, 0);
94 DRIVER_MODULE(openpic, simplebus, openpic_ofw_driver, openpic_devclass, 0, 0);
95 DRIVER_MODULE(openpic, macio, openpic_ofw_driver, openpic_devclass, 0, 0);
96
97 static int
openpic_ofw_probe(device_t dev)98 openpic_ofw_probe(device_t dev)
99 {
100 const char *type = ofw_bus_get_type(dev);
101
102 if (type == NULL)
103 return (ENXIO);
104
105 if (!ofw_bus_is_compatible(dev, "chrp,open-pic") &&
106 strcmp(type, "open-pic") != 0)
107 return (ENXIO);
108
109 /*
110 * On some U4 systems, there is a phantom MPIC in the mac-io cell.
111 * The uninorth driver will pick up the real PIC, so ignore it here.
112 */
113 if (OF_finddevice("/u4") != (phandle_t)-1)
114 return (ENXIO);
115
116 device_set_desc(dev, OPENPIC_DEVSTR);
117 return (0);
118 }
119
120 static int
openpic_ofw_attach(device_t dev)121 openpic_ofw_attach(device_t dev)
122 {
123 phandle_t xref, node;
124
125 node = ofw_bus_get_node(dev);
126
127 if (OF_getprop(node, "phandle", &xref, sizeof(xref)) == -1 &&
128 OF_getprop(node, "ibm,phandle", &xref, sizeof(xref)) == -1 &&
129 OF_getprop(node, "linux,phandle", &xref, sizeof(xref)) == -1)
130 xref = node;
131
132 return (openpic_common_attach(dev, xref));
133 }
134
135 static void
openpic_ofw_translate_code(device_t dev,u_int irq,int code,enum intr_trigger * trig,enum intr_polarity * pol)136 openpic_ofw_translate_code(device_t dev, u_int irq, int code,
137 enum intr_trigger *trig, enum intr_polarity *pol)
138 {
139 switch (code) {
140 case 0:
141 /* L to H edge */
142 *trig = INTR_TRIGGER_EDGE;
143 *pol = INTR_POLARITY_HIGH;
144 break;
145 case 1:
146 /* Active L level */
147 *trig = INTR_TRIGGER_LEVEL;
148 *pol = INTR_POLARITY_LOW;
149 break;
150 case 2:
151 /* Active H level */
152 *trig = INTR_TRIGGER_LEVEL;
153 *pol = INTR_POLARITY_HIGH;
154 break;
155 case 3:
156 /* H to L edge */
157 *trig = INTR_TRIGGER_EDGE;
158 *pol = INTR_POLARITY_LOW;
159 break;
160 default:
161 *trig = INTR_TRIGGER_CONFORM;
162 *pol = INTR_POLARITY_CONFORM;
163 }
164 }
165
166