2 * Copyright (c) 2001 - 2003 by Thomas Moestl <tmm@FreeBSD.org>.
3 * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions, and the following disclaimer,
11 * without modification, immediately at the beginning of the file.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include "opt_platform.h"
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/errno.h>
38 #include <sys/libkern.h>
40 #include <dev/ofw/ofw_bus.h>
41 #include <dev/ofw/ofw_bus_subr.h>
42 #include <dev/ofw/openfirm.h>
44 #include "ofw_bus_if.h"
47 ofw_bus_gen_setup_devinfo(struct ofw_bus_devinfo *obd, phandle_t node)
52 /* The 'name' property is considered mandatory. */
53 if ((OF_getprop_alloc(node, "name", 1, (void **)&obd->obd_name)) == -1)
55 OF_getprop_alloc(node, "compatible", 1, (void **)&obd->obd_compat);
56 OF_getprop_alloc(node, "device_type", 1, (void **)&obd->obd_type);
57 OF_getprop_alloc(node, "model", 1, (void **)&obd->obd_model);
63 ofw_bus_gen_destroy_devinfo(struct ofw_bus_devinfo *obd)
68 if (obd->obd_compat != NULL)
69 free(obd->obd_compat, M_OFWPROP);
70 if (obd->obd_model != NULL)
71 free(obd->obd_model, M_OFWPROP);
72 if (obd->obd_name != NULL)
73 free(obd->obd_name, M_OFWPROP);
74 if (obd->obd_type != NULL)
75 free(obd->obd_type, M_OFWPROP);
79 ofw_bus_gen_child_pnpinfo_str(device_t cbdev, device_t child, char *buf,
83 if (ofw_bus_get_name(child) != NULL) {
84 strlcat(buf, "name=", buflen);
85 strlcat(buf, ofw_bus_get_name(child), buflen);
88 if (ofw_bus_get_compat(child) != NULL) {
89 strlcat(buf, " compat=", buflen);
90 strlcat(buf, ofw_bus_get_compat(child), buflen);
96 ofw_bus_gen_get_compat(device_t bus, device_t dev)
98 const struct ofw_bus_devinfo *obd;
100 obd = OFW_BUS_GET_DEVINFO(bus, dev);
103 return (obd->obd_compat);
107 ofw_bus_gen_get_model(device_t bus, device_t dev)
109 const struct ofw_bus_devinfo *obd;
111 obd = OFW_BUS_GET_DEVINFO(bus, dev);
114 return (obd->obd_model);
118 ofw_bus_gen_get_name(device_t bus, device_t dev)
120 const struct ofw_bus_devinfo *obd;
122 obd = OFW_BUS_GET_DEVINFO(bus, dev);
125 return (obd->obd_name);
129 ofw_bus_gen_get_node(device_t bus, device_t dev)
131 const struct ofw_bus_devinfo *obd;
133 obd = OFW_BUS_GET_DEVINFO(bus, dev);
136 return (obd->obd_node);
140 ofw_bus_gen_get_type(device_t bus, device_t dev)
142 const struct ofw_bus_devinfo *obd;
144 obd = OFW_BUS_GET_DEVINFO(bus, dev);
147 return (obd->obd_type);
151 ofw_bus_is_compatible(device_t dev, const char *onecompat)
157 if ((compat = ofw_bus_get_compat(dev)) == NULL)
160 if ((node = ofw_bus_get_node(dev)) == -1)
163 /* Get total 'compatible' prop len */
164 if ((len = OF_getproplen(node, "compatible")) <= 0)
167 onelen = strlen(onecompat);
170 if (strlen(compat) == onelen &&
171 strncasecmp(compat, onecompat, onelen) == 0)
175 /* Slide to the next sub-string. */
176 l = strlen(compat) + 1;
184 ofw_bus_is_compatible_strict(device_t dev, const char *compatible)
189 if ((compat = ofw_bus_get_compat(dev)) == NULL)
192 len = strlen(compatible);
193 if (strlen(compat) == len &&
194 strncasecmp(compat, compatible, len) == 0)
201 ofw_bus_has_prop(device_t dev, const char *propname)
205 if ((node = ofw_bus_get_node(dev)) == -1)
208 return (OF_hasprop(node, propname));
213 ofw_bus_setup_iinfo(phandle_t node, struct ofw_bus_iinfo *ii, int intrsz)
218 if (OF_getprop(node, "#address-cells", &addrc, sizeof(addrc)) == -1)
220 ii->opi_addrc = addrc * sizeof(pcell_t);
222 ii->opi_imapsz = OF_getprop_alloc(node, "interrupt-map", 1,
223 (void **)&ii->opi_imap);
224 if (ii->opi_imapsz > 0) {
225 msksz = OF_getprop_alloc(node, "interrupt-map-mask", 1,
226 (void **)&ii->opi_imapmsk);
228 * Failure to get the mask is ignored; a full mask is used
229 * then. We barf on bad mask sizes, however.
231 if (msksz != -1 && msksz != ii->opi_addrc + intrsz)
232 panic("ofw_bus_setup_iinfo: bad interrupt-map-mask "
238 ofw_bus_lookup_imap(phandle_t node, struct ofw_bus_iinfo *ii, void *reg,
239 int regsz, void *pintr, int pintrsz, void *mintr, int mintrsz,
240 phandle_t *iparent, void *maskbuf)
244 if (ii->opi_imapsz <= 0)
246 KASSERT(regsz >= ii->opi_addrc,
247 ("ofw_bus_lookup_imap: register size too small: %d < %d",
248 regsz, ii->opi_addrc));
249 rv = OF_getprop(node, "reg", reg, regsz);
251 panic("ofw_bus_lookup_imap: could not get reg property");
252 return (ofw_bus_search_intrmap(pintr, pintrsz, reg, ii->opi_addrc,
253 ii->opi_imap, ii->opi_imapsz, ii->opi_imapmsk, maskbuf, mintr,
258 * Map an interrupt using the firmware reg, interrupt-map and
259 * interrupt-map-mask properties.
260 * The interrupt property to be mapped must be of size intrsz, and pointed to
261 * by intr. The regs property of the node for which the mapping is done must
262 * be passed as regs. This property is an array of register specifications;
263 * the size of the address part of such a specification must be passed as
264 * physsz. Only the first element of the property is used.
265 * imap and imapsz hold the interrupt mask and it's size.
266 * imapmsk is a pointer to the interrupt-map-mask property, which must have
267 * a size of physsz + intrsz; it may be NULL, in which case a full mask is
269 * maskbuf must point to a buffer of length physsz + intrsz.
270 * The interrupt is returned in result, which must point to a buffer of length
271 * rintrsz (which gives the expected size of the mapped interrupt).
272 * Returns 1 if a mapping was found, 0 otherwise.
275 ofw_bus_search_intrmap(void *intr, int intrsz, void *regs, int physsz,
276 void *imap, int imapsz, void *imapmsk, void *maskbuf, void *result,
277 int rintrsz, phandle_t *iparent)
280 uint8_t *ref = maskbuf;
281 uint8_t *uiintr = intr;
282 uint8_t *uiregs = regs;
283 uint8_t *uiimapmsk = imapmsk;
289 if (imapmsk != NULL) {
290 for (i = 0; i < physsz; i++)
291 ref[i] = uiregs[i] & uiimapmsk[i];
292 for (i = 0; i < intrsz; i++)
293 ref[physsz + i] = uiintr[i] & uiimapmsk[physsz + i];
295 bcopy(regs, ref, physsz);
296 bcopy(intr, ref + physsz, intrsz);
302 bcopy(mptr + physsz + intrsz, &parent, sizeof(parent));
303 if (OF_searchprop(OF_xref_phandle(parent), "#interrupt-cells",
304 &pintrsz, sizeof(pintrsz)) == -1)
305 pintrsz = 1; /* default */
306 pintrsz *= sizeof(pcell_t);
308 /* Compute the map stride size. */
309 tsz = physsz + intrsz + sizeof(phandle_t) + pintrsz;
310 KASSERT(i >= tsz, ("ofw_bus_search_intrmap: truncated map"));
313 * XXX: Apple hardware uses a second cell to set information
314 * on the interrupt trigger type. This information should
315 * be used somewhere to program the PIC.
318 if (bcmp(ref, mptr, physsz + intrsz) == 0) {
319 bcopy(mptr + physsz + intrsz + sizeof(parent),