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);
58 OF_getprop_alloc(node, "status", 1, (void **)&obd->obd_status);
64 ofw_bus_gen_destroy_devinfo(struct ofw_bus_devinfo *obd)
69 if (obd->obd_compat != NULL)
70 free(obd->obd_compat, M_OFWPROP);
71 if (obd->obd_model != NULL)
72 free(obd->obd_model, M_OFWPROP);
73 if (obd->obd_name != NULL)
74 free(obd->obd_name, M_OFWPROP);
75 if (obd->obd_type != NULL)
76 free(obd->obd_type, M_OFWPROP);
77 if (obd->obd_status != NULL)
78 free(obd->obd_status, M_OFWPROP);
82 ofw_bus_gen_child_pnpinfo_str(device_t cbdev, device_t child, char *buf,
86 if (ofw_bus_get_name(child) != NULL) {
87 strlcat(buf, "name=", buflen);
88 strlcat(buf, ofw_bus_get_name(child), buflen);
91 if (ofw_bus_get_compat(child) != NULL) {
92 strlcat(buf, " compat=", buflen);
93 strlcat(buf, ofw_bus_get_compat(child), buflen);
99 ofw_bus_gen_get_compat(device_t bus, device_t dev)
101 const struct ofw_bus_devinfo *obd;
103 obd = OFW_BUS_GET_DEVINFO(bus, dev);
106 return (obd->obd_compat);
110 ofw_bus_gen_get_model(device_t bus, device_t dev)
112 const struct ofw_bus_devinfo *obd;
114 obd = OFW_BUS_GET_DEVINFO(bus, dev);
117 return (obd->obd_model);
121 ofw_bus_gen_get_name(device_t bus, device_t dev)
123 const struct ofw_bus_devinfo *obd;
125 obd = OFW_BUS_GET_DEVINFO(bus, dev);
128 return (obd->obd_name);
132 ofw_bus_gen_get_node(device_t bus, device_t dev)
134 const struct ofw_bus_devinfo *obd;
136 obd = OFW_BUS_GET_DEVINFO(bus, dev);
139 return (obd->obd_node);
143 ofw_bus_gen_get_type(device_t bus, device_t dev)
145 const struct ofw_bus_devinfo *obd;
147 obd = OFW_BUS_GET_DEVINFO(bus, dev);
150 return (obd->obd_type);
154 ofw_bus_get_status(device_t dev)
156 const struct ofw_bus_devinfo *obd;
158 obd = OFW_BUS_GET_DEVINFO(device_get_parent(dev), dev);
162 return (obd->obd_status);
166 ofw_bus_status_okay(device_t dev)
170 status = ofw_bus_get_status(dev);
171 if (status == NULL || strcmp(status, "okay") == 0)
178 ofw_bus_is_compatible(device_t dev, const char *onecompat)
184 if ((compat = ofw_bus_get_compat(dev)) == NULL)
187 if ((node = ofw_bus_get_node(dev)) == -1)
190 /* Get total 'compatible' prop len */
191 if ((len = OF_getproplen(node, "compatible")) <= 0)
194 onelen = strlen(onecompat);
197 if (strlen(compat) == onelen &&
198 strncasecmp(compat, onecompat, onelen) == 0)
202 /* Slide to the next sub-string. */
203 l = strlen(compat) + 1;
211 ofw_bus_is_compatible_strict(device_t dev, const char *compatible)
216 if ((compat = ofw_bus_get_compat(dev)) == NULL)
219 len = strlen(compatible);
220 if (strlen(compat) == len &&
221 strncasecmp(compat, compatible, len) == 0)
227 const struct ofw_compat_data *
228 ofw_bus_search_compatible(device_t dev, const struct ofw_compat_data *compat)
234 for (; compat->ocd_str != NULL; ++compat) {
235 if (ofw_bus_is_compatible(dev, compat->ocd_str))
243 ofw_bus_has_prop(device_t dev, const char *propname)
247 if ((node = ofw_bus_get_node(dev)) == -1)
250 return (OF_hasprop(node, propname));
254 ofw_bus_setup_iinfo(phandle_t node, struct ofw_bus_iinfo *ii, int intrsz)
259 if (OF_getencprop(node, "#address-cells", &addrc, sizeof(addrc)) == -1)
261 ii->opi_addrc = addrc * sizeof(pcell_t);
263 ii->opi_imapsz = OF_getencprop_alloc(node, "interrupt-map", 1,
264 (void **)&ii->opi_imap);
265 if (ii->opi_imapsz > 0) {
266 msksz = OF_getencprop_alloc(node, "interrupt-map-mask", 1,
267 (void **)&ii->opi_imapmsk);
269 * Failure to get the mask is ignored; a full mask is used
270 * then. We barf on bad mask sizes, however.
272 if (msksz != -1 && msksz != ii->opi_addrc + intrsz)
273 panic("ofw_bus_setup_iinfo: bad interrupt-map-mask "
279 ofw_bus_lookup_imap(phandle_t node, struct ofw_bus_iinfo *ii, void *reg,
280 int regsz, void *pintr, int pintrsz, void *mintr, int mintrsz,
283 uint8_t maskbuf[regsz + pintrsz];
286 if (ii->opi_imapsz <= 0)
288 KASSERT(regsz >= ii->opi_addrc,
289 ("ofw_bus_lookup_imap: register size too small: %d < %d",
290 regsz, ii->opi_addrc));
292 rv = OF_getencprop(node, "reg", reg, regsz);
294 panic("ofw_bus_lookup_imap: cannot get reg property");
296 return (ofw_bus_search_intrmap(pintr, pintrsz, reg, ii->opi_addrc,
297 ii->opi_imap, ii->opi_imapsz, ii->opi_imapmsk, maskbuf, mintr,
302 * Map an interrupt using the firmware reg, interrupt-map and
303 * interrupt-map-mask properties.
304 * The interrupt property to be mapped must be of size intrsz, and pointed to
305 * by intr. The regs property of the node for which the mapping is done must
306 * be passed as regs. This property is an array of register specifications;
307 * the size of the address part of such a specification must be passed as
308 * physsz. Only the first element of the property is used.
309 * imap and imapsz hold the interrupt mask and it's size.
310 * imapmsk is a pointer to the interrupt-map-mask property, which must have
311 * a size of physsz + intrsz; it may be NULL, in which case a full mask is
313 * maskbuf must point to a buffer of length physsz + intrsz.
314 * The interrupt is returned in result, which must point to a buffer of length
315 * rintrsz (which gives the expected size of the mapped interrupt).
316 * Returns number of cells in the interrupt if a mapping was found, 0 otherwise.
319 ofw_bus_search_intrmap(void *intr, int intrsz, void *regs, int physsz,
320 void *imap, int imapsz, void *imapmsk, void *maskbuf, void *result,
321 int rintrsz, phandle_t *iparent)
324 uint8_t *ref = maskbuf;
325 uint8_t *uiintr = intr;
326 uint8_t *uiregs = regs;
327 uint8_t *uiimapmsk = imapmsk;
333 if (imapmsk != NULL) {
334 for (i = 0; i < physsz; i++)
335 ref[i] = uiregs[i] & uiimapmsk[i];
336 for (i = 0; i < intrsz; i++)
337 ref[physsz + i] = uiintr[i] & uiimapmsk[physsz + i];
339 bcopy(regs, ref, physsz);
340 bcopy(intr, ref + physsz, intrsz);
346 bcopy(mptr + physsz + intrsz, &parent, sizeof(parent));
347 if (OF_searchencprop(OF_xref_phandle(parent),
348 "#interrupt-cells", &pintrsz, sizeof(pintrsz)) == -1)
349 pintrsz = 1; /* default */
350 pintrsz *= sizeof(pcell_t);
352 /* Compute the map stride size. */
353 tsz = physsz + intrsz + sizeof(phandle_t) + pintrsz;
354 KASSERT(i >= tsz, ("ofw_bus_search_intrmap: truncated map"));
356 if (bcmp(ref, mptr, physsz + intrsz) == 0) {
357 bcopy(mptr + physsz + intrsz + sizeof(parent),
358 result, MIN(rintrsz, pintrsz));
362 return (pintrsz/sizeof(pcell_t));