1 /* This file is part of the program psim.
3 Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
49 /* manipulate/lookup device names */
51 typedef struct _name_specifier {
52 /* components in the full length name */
72 /* Given a device specifier, break it up into its main components:
73 path (and if present) property name and property value. */
77 split_device_specifier(device *current,
78 const char *device_specifier,
83 /* expand any leading alias if present */
85 && *device_specifier != '\0'
86 && *device_specifier != '.'
87 && *device_specifier != '/') {
88 device *aliases = tree_find_device(current, "/aliases");
91 while (device_specifier[len] != '\0'
92 && device_specifier[len] != '/'
93 && device_specifier[len] != ':'
94 && !isspace(device_specifier[len])) {
95 alias[len] = device_specifier[len];
97 if (len >= sizeof(alias))
98 error("split_device_specifier: buffer overflow");
102 && device_find_property(aliases, alias)) {
103 strcpy(spec->buf, device_find_string_property(aliases, alias));
104 strcat(spec->buf, device_specifier + len);
107 strcpy(spec->buf, device_specifier);
111 strcpy(spec->buf, device_specifier);
114 /* check no overflow */
115 if (strlen(spec->buf) >= sizeof(spec->buf))
116 error("split_device_specifier: buffer overflow\n");
118 /* strip leading spaces */
120 while (*chp != '\0' && isspace(*chp))
125 /* find the path and terminate it with null */
127 while (*chp != '\0' && !isspace(*chp))
135 while (*chp != '\0' && isspace(*chp))
139 /* now go back and chop the property off of the path */
140 if (spec->value[0] == '\0') {
141 spec->property = NULL; /*not a property*/
144 else if (spec->value[0] == '>'
145 || spec->value[0] == '<') {
146 /* an interrupt spec */
147 spec->property = NULL;
150 chp = strrchr(spec->path, '/');
152 spec->property = spec->path;
153 spec->path = strchr(spec->property, '\0');
157 spec->property = chp+1;
161 /* and mark the rest as invalid */
166 spec->last_name = NULL;
167 spec->last_base = NULL;
168 spec->last_unit = NULL;
169 spec->last_args = NULL;
175 /* given a device specifier break it up into its main components -
176 path and property name - assuming that the last `device' is a
179 STATIC_INLINE_DEVICE\
181 split_property_specifier(device *current,
182 const char *property_specifier,
183 name_specifier *spec)
185 if (split_device_specifier(current, property_specifier, spec)) {
186 if (spec->property == NULL) {
187 /* force the last name to be a property name */
188 char *chp = strrchr(spec->path, '/');
190 spec->property = spec->path;
191 spec->path = strrchr(spec->property, '\0');;
195 spec->property = chp+1;
205 /* device the next device name and split it up, return 0 when no more
210 split_device_name(name_specifier *spec)
213 /* remember what came before */
214 spec->last_name = spec->name;
215 spec->last_base = spec->base;
216 spec->last_unit = spec->unit;
217 spec->last_args = spec->args;
219 if (spec->path[0] == '\0') {
226 /* break the current device spec from the path */
227 spec->name = spec->path;
228 chp = strchr(spec->name, '/');
230 spec->path = strchr(spec->name, '\0');
235 /* break out the base */
236 if (spec->name[0] == '(') {
237 chp = strchr(spec->name, ')');
239 spec->base = spec->name;
243 spec->base = spec->name + 1;
244 spec->name = chp + 1;
248 spec->base = spec->name;
250 /* now break out the unit */
251 chp = strchr(spec->name, '@');
261 /* finally any args */
262 chp = strchr(chp, ':');
273 /* device the value, returning the next non-space token */
277 split_value(name_specifier *spec)
280 if (spec->value == NULL)
282 /* skip leading white space */
283 while (isspace(spec->value[0]))
285 if (spec->value[0] == '\0') {
290 /* find trailing space */
291 while (spec->value[0] != '\0' && !isspace(spec->value[0]))
293 /* chop this value out */
294 if (spec->value[0] != '\0') {
295 spec->value[0] = '\0';
303 /* traverse the path specified by spec starting at current */
307 split_find_device(device *current,
308 name_specifier *spec)
310 /* strip off (and process) any leading ., .., ./ and / */
312 if (strncmp(spec->path, "/", strlen("/")) == 0) {
314 while (current != NULL && device_parent(current) != NULL)
315 current = device_parent(current);
316 spec->path += strlen("/");
318 else if (strncmp(spec->path, "./", strlen("./")) == 0) {
321 spec->path += strlen("./");
323 else if (strncmp(spec->path, "../", strlen("../")) == 0) {
325 if (current != NULL && device_parent(current) != NULL)
326 current = device_parent(current);
327 spec->path += strlen("../");
329 else if (strcmp(spec->path, ".") == 0) {
332 spec->path += strlen(".");
334 else if (strcmp(spec->path, "..") == 0) {
336 if (current != NULL && device_parent(current) != NULL)
337 current = device_parent(current);
338 spec->path += strlen("..");
344 /* now go through the path proper */
346 if (current == NULL) {
347 split_device_name(spec);
351 while (split_device_name(spec)) {
353 for (child = device_child(current);
354 child != NULL; child = device_sibling(child)) {
355 if (strcmp(spec->name, device_name(child)) == 0) {
356 if (spec->unit == NULL)
360 device_decode_unit(current, spec->unit, &phys);
361 if (memcmp(&phys, device_unit_address(child),
362 sizeof(device_unit)) == 0)
368 return current; /* search failed */
378 split_fill_path(device *current,
379 const char *device_specifier,
380 name_specifier *spec)
383 if (!split_device_specifier(current, device_specifier, spec))
384 device_error(current, "error parsing %s\n", device_specifier);
386 /* fill our tree with its contents */
387 current = split_find_device(current, spec);
389 /* add any additional devices as needed */
390 if (spec->name != NULL) {
392 current = device_create(current, spec->base, spec->name,
393 spec->unit, spec->args);
394 } while (split_device_name(spec));
403 tree_init(device *root,
406 TRACE(trace_device_tree, ("tree_init(root=0x%lx, system=0x%lx)\n",
409 /* remove the old, rebuild the new */
410 tree_traverse(root, device_clean, NULL, system);
411 tree_traverse(root, device_init_static_properties, NULL, system);
412 tree_traverse(root, device_init_address, NULL, system);
413 tree_traverse(root, device_init_runtime_properties, NULL, system);
414 tree_traverse(root, device_init_data, NULL, system);
419 /* <non-white-space> */
423 skip_token(const char *chp)
425 while (!isspace(*chp) && *chp != '\0')
427 while (isspace(*chp) && *chp != '\0')
433 /* count the number of entries */
437 count_entries(device *current,
438 const char *property_name,
439 const char *property_value,
442 const char *chp = property_value;
444 while (*chp != '\0') {
446 chp = skip_token(chp);
448 if ((nr_entries % modulo) != 0) {
449 device_error(current, "incorrect number of entries for %s property %s, should be multiple of %d",
450 property_name, property_value, modulo);
452 return nr_entries / modulo;
457 /* parse: <address> ::= <token> ; device dependant */
461 parse_address(device *current,
464 device_unit *address)
466 ASSERT(device_nr_address_cells(bus) > 0);
467 if (device_decode_unit(bus, chp, address) < 0)
468 device_error(current, "invalid unit address in %s", chp);
469 return skip_token(chp);
473 /* parse: <size> ::= <number> { "," <number> } ; */
477 parse_size(device *current,
484 const char *curr = chp;
485 memset(size, 0, sizeof(*size));
486 /* parse the numeric list */
487 size->nr_cells = device_nr_size_cells(bus);
489 ASSERT(size->nr_cells > 0);
492 size->cells[nr] = strtoul(curr, &next, 0);
494 device_error(current, "Problem parsing <size> %s", chp);
498 if (nr == size->nr_cells)
499 device_error(current, "Too many values in <size> %s", chp);
502 ASSERT(nr > 0 && nr <= size->nr_cells);
503 /* right align the numbers */
504 for (i = 1; i <= size->nr_cells; i++) {
506 size->cells[size->nr_cells - i] = size->cells[nr - i];
508 size->cells[size->nr_cells - i] = 0;
510 return skip_token(chp);
514 /* parse: <reg> ::= { <address> <size> } ; */
518 parse_reg_property(device *current,
519 const char *property_name,
520 const char *property_value)
524 reg_property_spec *regs;
526 device *bus = device_parent(current);
528 /* determine the number of reg entries by counting tokens */
529 nr_regs = count_entries(current, property_name, property_value,
530 1 + (device_nr_size_cells(bus) > 0));
532 /* create working space */
533 regs = zalloc(nr_regs * sizeof(*regs));
536 chp = property_value;
537 for (reg_nr = 0; reg_nr < nr_regs; reg_nr++) {
538 chp = parse_address(current, bus, chp, ®s[reg_nr].address);
539 if (device_nr_size_cells(bus) > 0)
540 chp = parse_size(current, bus, chp, ®s[reg_nr].size);
542 memset(®s[reg_nr].size, sizeof (®s[reg_nr].size), 0);
546 device_add_reg_array_property(current, property_name,
553 /* { <child-address> <parent-address> <child-size> }* */
557 parse_ranges_property(device *current,
558 const char *property_name,
559 const char *property_value)
563 range_property_spec *ranges;
566 /* determine the number of ranges specified */
567 nr_ranges = count_entries(current, property_name, property_value, 3);
569 /* create a property of that size */
570 ranges = zalloc(nr_ranges * sizeof(*ranges));
573 chp = property_value;
574 for (range_nr = 0; range_nr < nr_ranges; range_nr++) {
575 chp = parse_address(current, current,
576 chp, &ranges[range_nr].child_address);
577 chp = parse_address(current, device_parent(current),
578 chp, &ranges[range_nr].parent_address);
579 chp = parse_size(current, current,
580 chp, &ranges[range_nr].size);
584 device_add_range_array_property(current, property_name, ranges, nr_ranges);
594 parse_integer_property(device *current,
595 const char *property_name,
596 const char *property_value)
599 unsigned_cell words[1024];
600 /* integer or integer array? */
604 words[nr_entries] = strtoul(property_value, &end, 0);
605 if (property_value == end)
608 if (nr_entries * sizeof(words[0]) >= sizeof(words))
609 device_error(current, "buffer overflow");
610 property_value = end;
613 device_error(current, "error parsing integer property %s (%s)",
614 property_name, property_value);
615 else if (nr_entries == 1)
616 device_add_integer_property(current, property_name, words[0]);
619 for (i = 0; i < nr_entries; i++) {
622 /* perhaps integer array property is better */
623 device_add_array_property(current, property_name, words,
624 sizeof(words[0]) * nr_entries);
633 parse_string_property(device *current,
634 const char *property_name,
635 const char *property_value)
640 int approx_nr_strings;
642 /* get an estimate as to the number of strings by counting double
644 approx_nr_strings = 2;
645 for (chp = property_value; *chp; chp++) {
649 approx_nr_strings = (approx_nr_strings) / 2;
651 /* create a string buffer for that many (plus a null) */
652 strings = (char**)zalloc((approx_nr_strings + 1) * sizeof(char*));
654 /* now find all the strings */
655 chp = property_value;
659 /* skip leading space */
660 while (*chp != '\0' && isspace(*chp))
667 /* a quoted string - watch for '\' et.al. */
668 /* estimate the size and allocate space for it */
672 while (chp[pos] != '\0' && chp[pos] != '"') {
673 if (chp[pos] == '\\' && chp[pos+1] != '\0')
678 strings[nr_strings] = zalloc(pos + 1);
679 /* copy the string over */
681 while (*chp != '\0' && *chp != '"') {
682 if (*chp == '\\' && *(chp+1) != '\0') {
683 strings[nr_strings][pos] = *(chp+1);
688 strings[nr_strings][pos] = *chp;
695 strings[nr_strings][pos] = '\0';
698 /* copy over a single unquoted token */
700 while (chp[len] != '\0' && !isspace(chp[len]))
702 strings[nr_strings] = zalloc(len + 1);
703 strncpy(strings[nr_strings], chp, len);
704 strings[nr_strings][len] = '\0';
708 if (nr_strings > approx_nr_strings)
709 device_error(current, "String property %s badly formatted",
712 ASSERT(strings[nr_strings] == NULL); /* from zalloc */
716 device_add_string_property(current, property_name, "");
717 else if (nr_strings == 1)
718 device_add_string_property(current, property_name, strings[0]);
720 const char **specs = (const char**)strings; /* stop a bogus error */
721 device_add_string_array_property(current, property_name,
725 /* flush the created string */
726 while (nr_strings > 0) {
728 zfree(strings[nr_strings]);
734 /* <path-to-ihandle-device> */
738 parse_ihandle_property(device *current,
739 const char *property,
742 ihandle_runtime_property_spec ihandle;
744 /* pass the full path */
745 ihandle.full_path = value;
747 /* save this ready for the ihandle create */
748 device_add_ihandle_runtime_property(current, property,
756 tree_parse(device *current,
760 char device_specifier[1024];
763 /* format the path */
767 vsprintf(device_specifier, fmt, ap);
769 if (strlen(device_specifier) >= sizeof(device_specifier))
770 error("device_tree_add_deviced: buffer overflow\n");
773 /* construct the tree down to the final device */
774 current = split_fill_path(current, device_specifier, &spec);
776 /* is there an interrupt spec */
777 if (spec.property == NULL
778 && spec.value != NULL) {
779 char *op = split_value(&spec);
783 char *my_port_name = split_value(&spec);
785 char *dest_port_name = split_value(&spec);
787 name_specifier dest_spec;
788 char *dest_device_name = split_value(&spec);
791 my_port = device_interrupt_decode(current, my_port_name,
793 /* find the dest device and port */
794 dest = split_fill_path(current, dest_device_name, &dest_spec);
795 dest_port = device_interrupt_decode(dest, dest_port_name,
797 /* connect the two */
798 device_interrupt_attach(current,
806 device_error(current, "unreconised interrupt spec %s\n", spec.value);
811 /* is there a property */
812 if (spec.property != NULL) {
813 if (strcmp(spec.value, "true") == 0)
814 device_add_boolean_property(current, spec.property, 1);
815 else if (strcmp(spec.value, "false") == 0)
816 device_add_boolean_property(current, spec.property, 0);
818 const device_property *property;
819 switch (spec.value[0]) {
821 parse_ihandle_property(current, spec.property, spec.value + 1);
825 unsigned8 words[1024];
826 char *curr = spec.value + 1;
830 words[nr_words] = H2BE_1(strtoul(curr, &next, 0));
836 device_add_array_property(current, spec.property,
837 words, sizeof(words[0]) * nr_words);
841 parse_string_property(current, spec.property, spec.value);
845 property = tree_find_property(current, spec.value);
846 if (property == NULL)
847 device_error(current, "property %s not found\n", spec.value);
848 device_add_duplicate_property(current,
853 if (strcmp(spec.property, "reg") == 0
854 || strcmp(spec.property, "assigned-addresses") == 0
855 || strcmp(spec.property, "alternate-reg") == 0){
856 parse_reg_property(current, spec.property, spec.value);
858 else if (strcmp(spec.property, "ranges") == 0) {
859 parse_ranges_property(current, spec.property, spec.value);
861 else if (isdigit(spec.value[0])
862 || (spec.value[0] == '-' && isdigit(spec.value[1]))
863 || (spec.value[0] == '+' && isdigit(spec.value[1]))) {
864 parse_integer_property(current, spec.property, spec.value);
867 parse_string_property(current, spec.property, spec.value);
878 tree_traverse(device *root,
879 tree_traverse_function *prefix,
880 tree_traverse_function *postfix,
886 for (child = device_child(root);
888 child = device_sibling(child)) {
889 tree_traverse(child, prefix, postfix, data);
898 print_address(device *bus,
899 const device_unit *phys)
902 device_encode_unit(bus, phys, unit, sizeof(unit));
903 printf_filtered(" %s", unit);
908 print_size(device *bus,
909 const device_unit *size)
912 for (i = 0; i < size->nr_cells; i++)
913 if (size->cells[i] != 0)
915 if (i < size->nr_cells) {
916 printf_filtered(" 0x%lx", (unsigned long)size->cells[i]);
918 for (; i < size->nr_cells; i++)
919 printf_filtered(",0x%lx", (unsigned long)size->cells[i]);
922 printf_filtered(" 0");
927 print_reg_property(device *me,
928 const device_property *property)
931 reg_property_spec reg;
933 device_find_reg_array_property(me, property->name, reg_nr, ®);
935 print_address(device_parent(me), ®.address);
936 print_size(me, ®.size);
942 print_ranges_property(device *me,
943 const device_property *property)
946 range_property_spec range;
948 device_find_range_array_property(me, property->name, range_nr, &range);
950 print_address(me, &range.child_address);
951 print_address(device_parent(me), &range.parent_address);
952 print_size(me, &range.size);
958 print_string(const char *string)
960 printf_filtered(" \"");
961 while (*string != '\0') {
964 printf_filtered("\\\"");
967 printf_filtered("\\\\");
970 printf_filtered("%c", *string);
975 printf_filtered("\"");
980 print_string_array_property(device *me,
981 const device_property *property)
984 string_property_spec string;
986 device_find_string_array_property(me, property->name, nr, &string);
988 print_string(string);
994 print_properties(device *me)
996 const device_property *property;
997 for (property = device_find_property(me, NULL);
999 property = device_next_property(property)) {
1000 printf_filtered("%s/%s", device_path(me), property->name);
1001 if (property->original != NULL) {
1002 printf_filtered(" !");
1003 printf_filtered("%s/%s",
1004 device_path(property->original->owner),
1005 property->original->name);
1008 switch (property->type) {
1009 case array_property:
1010 if ((property->sizeof_array % sizeof(signed_cell)) == 0) {
1011 unsigned_cell *w = (unsigned_cell*)property->array;
1014 cell_nr < (property->sizeof_array / sizeof(unsigned_cell));
1016 printf_filtered(" 0x%lx", (unsigned long)BE2H_cell(w[cell_nr]));
1020 unsigned8 *w = (unsigned8*)property->array;
1021 printf_filtered(" [");
1022 while ((char*)w - (char*)property->array < property->sizeof_array) {
1023 printf_filtered(" 0x%2x", BE2H_1(*w));
1028 case boolean_property:
1030 int b = device_find_boolean_property(me, property->name);
1031 printf_filtered(" %s", b ? "true" : "false");
1034 case ihandle_property:
1036 if (property->array != NULL) {
1037 device_instance *instance = device_find_ihandle_property(me, property->name);
1038 printf_filtered(" *%s", device_instance_path(instance));
1041 /* not yet initialized, ask the device for the path */
1042 ihandle_runtime_property_spec spec;
1043 device_find_ihandle_runtime_property(me, property->name, &spec);
1044 printf_filtered(" *%s", spec.full_path);
1048 case integer_property:
1050 unsigned_word w = device_find_integer_property(me, property->name);
1051 printf_filtered(" 0x%lx", (unsigned long)w);
1054 case range_array_property:
1055 print_ranges_property(me, property);
1057 case reg_array_property:
1058 print_reg_property(me, property);
1060 case string_property:
1062 const char *s = device_find_string_property(me, property->name);
1066 case string_array_property:
1067 print_string_array_property(me, property);
1071 printf_filtered("\n");
1077 print_interrupts(device *me,
1081 void *ignore_or_null)
1085 device_interrupt_encode(me, my_port, src, sizeof(src), output_port);
1086 device_interrupt_encode(dest, dest_port, dst, sizeof(dst), input_port);
1087 printf_filtered("%s > %s %s %s\n",
1095 print_device(device *me,
1096 void *ignore_or_null)
1098 printf_filtered("%s\n", device_path(me));
1099 print_properties(me);
1100 device_interrupt_traverse(me, print_interrupts, NULL);
1105 tree_print(device *root)
1115 tree_usage(int verbose)
1118 printf_filtered("\n");
1119 printf_filtered("A device/property specifier has the form:\n");
1120 printf_filtered("\n");
1121 printf_filtered(" /path/to/a/device [ property-value ]\n");
1122 printf_filtered("\n");
1123 printf_filtered("and a possible device is\n");
1124 printf_filtered("\n");
1127 printf_filtered("\n");
1128 printf_filtered("A device/property specifier (<spec>) has the format:\n");
1129 printf_filtered("\n");
1130 printf_filtered(" <spec> ::= <path> [ <value> ] ;\n");
1131 printf_filtered(" <path> ::= { <prefix> } { <node> \"/\" } <node> ;\n");
1132 printf_filtered(" <prefix> ::= ( | \"/\" | \"../\" | \"./\" ) ;\n");
1133 printf_filtered(" <node> ::= <name> [ \"@\" <unit> ] [ \":\" <args> ] ;\n");
1134 printf_filtered(" <unit> ::= <number> { \",\" <number> } ;\n");
1135 printf_filtered("\n");
1136 printf_filtered("Where:\n");
1137 printf_filtered("\n");
1138 printf_filtered(" <name> is the name of a device (list below)\n");
1139 printf_filtered(" <unit> is the unit-address relative to the parent bus\n");
1140 printf_filtered(" <args> additional arguments used when creating the device\n");
1141 printf_filtered(" <value> ::= ( <number> # integer property\n");
1142 printf_filtered(" | \"[\" { <number> } # array property (byte)\n");
1143 printf_filtered(" | \"{\" { <number> } # array property (cell)\n");
1144 printf_filtered(" | [ \"true\" | \"false\" ] # boolean property\n");
1145 printf_filtered(" | \"*\" <path> # ihandle property\n");
1146 printf_filtered(" | \"!\" <path> # copy property\n");
1147 printf_filtered(" | \">\" [ <number> ] <path> # attach interrupt\n");
1148 printf_filtered(" | \"<\" <path> # attach child interrupt\n");
1149 printf_filtered(" | \"\\\"\" <text> # string property\n");
1150 printf_filtered(" | <text> # string property\n");
1151 printf_filtered(" ) ;\n");
1152 printf_filtered("\n");
1153 printf_filtered("And the following are valid device names:\n");
1154 printf_filtered("\n");
1162 tree_instance(device *root,
1163 const char *device_specifier)
1165 /* find the device node */
1167 name_specifier spec;
1168 if (!split_device_specifier(root, device_specifier, &spec))
1170 me = split_find_device(root, &spec);
1171 if (spec.name != NULL)
1173 /* create the instance */
1174 return device_create_instance(me, device_specifier, spec.last_args);
1180 tree_find_device(device *root,
1181 const char *path_to_device)
1184 name_specifier spec;
1186 /* parse the path */
1187 split_device_specifier(root, path_to_device, &spec);
1188 if (spec.value != NULL)
1189 return NULL; /* something wierd */
1192 node = split_find_device(root, &spec);
1193 if (spec.name != NULL)
1194 return NULL; /* not a leaf */
1201 (const device_property *)
1202 tree_find_property(device *root,
1203 const char *path_to_property)
1205 name_specifier spec;
1206 if (!split_property_specifier(root, path_to_property, &spec))
1207 device_error(root, "Invalid property path %s", path_to_property);
1208 root = split_find_device(root, &spec);
1209 return device_find_property(root, spec.property);
1214 tree_find_boolean_property(device *root,
1215 const char *path_to_property)
1217 name_specifier spec;
1218 if (!split_property_specifier(root, path_to_property, &spec))
1219 device_error(root, "Invalid property path %s", path_to_property);
1220 root = split_find_device(root, &spec);
1221 return device_find_boolean_property(root, spec.property);
1226 tree_find_integer_property(device *root,
1227 const char *path_to_property)
1229 name_specifier spec;
1230 if (!split_property_specifier(root, path_to_property, &spec))
1231 device_error(root, "Invalid property path %s", path_to_property);
1232 root = split_find_device(root, &spec);
1233 return device_find_integer_property(root, spec.property);
1238 tree_find_ihandle_property(device *root,
1239 const char *path_to_property)
1241 name_specifier spec;
1242 if (!split_property_specifier(root, path_to_property, &spec))
1243 device_error(root, "Invalid property path %s", path_to_property);
1244 root = split_find_device(root, &spec);
1245 return device_find_ihandle_property(root, spec.property);
1250 tree_find_string_property(device *root,
1251 const char *path_to_property)
1253 name_specifier spec;
1254 if (!split_property_specifier(root, path_to_property, &spec))
1255 device_error(root, "Invalid property path %s", path_to_property);
1256 root = split_find_device(root, &spec);
1257 return device_find_string_property(root, spec.property);
1261 #endif /* _PARSE_C_ */