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[/] [or1k/] [trunk/] [insight/] [sim/] [common/] [hw-tree.c] - Rev 1765
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/* This file is part of the program psim. Copyright (C) 1994-1998, Andrew Cagney <cagney@highland.com.au> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "hw-main.h" #include "hw-base.h" #include "hw-tree.h" #include "sim-io.h" #include "sim-assert.h" #ifdef HAVE_STDLIB_H #include <stdlib.h> #endif #ifdef HAVE_STRING_H #include <string.h> #else #ifdef HAVE_STRINGS_H #include <strings.h> #endif #endif #include <ctype.h> /* manipulate/lookup device names */ typedef struct _name_specifier { /* components in the full length name */ char *path; char *property; char *value; /* current device */ char *family; char *name; char *unit; char *args; /* previous device */ char *last_name; char *last_family; char *last_unit; char *last_args; /* work area */ char buf[1024]; } name_specifier; /* Given a device specifier, break it up into its main components: path (and if present) property name and property value. */ static int split_device_specifier (struct hw *current, const char *device_specifier, name_specifier *spec) { char *chp = NULL; /* expand any leading alias if present */ if (current != NULL && *device_specifier != '\0' && *device_specifier != '.' && *device_specifier != '/') { struct hw *aliases = hw_tree_find_device (current, "/aliases"); char alias[32]; int len = 0; while (device_specifier[len] != '\0' && device_specifier[len] != '/' && device_specifier[len] != ':' && !isspace (device_specifier[len])) { alias[len] = device_specifier[len]; len++; if (len >= sizeof(alias)) hw_abort (NULL, "split_device_specifier: buffer overflow"); } alias[len] = '\0'; if (aliases != NULL && hw_find_property (aliases, alias)) { strcpy (spec->buf, hw_find_string_property(aliases, alias)); strcat (spec->buf, device_specifier + len); } else { strcpy (spec->buf, device_specifier); } } else { strcpy(spec->buf, device_specifier); } /* check no overflow */ if (strlen(spec->buf) >= sizeof(spec->buf)) hw_abort (NULL, "split_device_specifier: buffer overflow\n"); /* strip leading spaces */ chp = spec->buf; while (*chp != '\0' && isspace(*chp)) chp++; if (*chp == '\0') return 0; /* find the path and terminate it with null */ spec->path = chp; while (*chp != '\0' && !isspace(*chp)) chp++; if (*chp != '\0') { *chp = '\0'; chp++; } /* and any value */ while (*chp != '\0' && isspace(*chp)) chp++; spec->value = chp; /* now go back and chop the property off of the path */ if (spec->value[0] == '\0') { spec->property = NULL; /*not a property*/ spec->value = NULL; } else if (spec->value[0] == '>' || spec->value[0] == '<') { /* an interrupt spec */ spec->property = NULL; } else { chp = strrchr(spec->path, '/'); if (chp == NULL) { spec->property = spec->path; spec->path = strchr(spec->property, '\0'); } else { *chp = '\0'; spec->property = chp+1; } } /* and mark the rest as invalid */ spec->name = NULL; spec->family = NULL; spec->unit = NULL; spec->args = NULL; spec->last_name = NULL; spec->last_family = NULL; spec->last_unit = NULL; spec->last_args = NULL; return 1; } /* given a device specifier break it up into its main components - path and property name - assuming that the last `device' is a property name. */ static int split_property_specifier (struct hw *current, const char *property_specifier, name_specifier *spec) { if (split_device_specifier (current, property_specifier, spec)) { if (spec->property == NULL) { /* force the last name to be a property name */ char *chp = strrchr (spec->path, '/'); if (chp == NULL) { spec->property = spec->path; spec->path = strrchr (spec->property, '\0');; } else { *chp = '\0'; spec->property = chp + 1; } } return 1; } else return 0; } /* device the next device name and split it up, return 0 when no more names to struct hw */ static int split_device_name (name_specifier *spec) { char *chp; /* remember what came before */ spec->last_name = spec->name; spec->last_family = spec->family; spec->last_unit = spec->unit; spec->last_args = spec->args; /* finished? */ if (spec->path[0] == '\0') { spec->name = NULL; spec->family = NULL; spec->unit = NULL; spec->args = NULL; return 0; } /* break the current device spec from the path */ spec->name = spec->path; chp = strchr (spec->name, '/'); if (chp == NULL) spec->path = strchr (spec->name, '\0'); else { spec->path = chp+1; *chp = '\0'; } /* break out the base */ if (spec->name[0] == '(') { chp = strchr(spec->name, ')'); if (chp == NULL) { spec->family = spec->name; } else { *chp = '\0'; spec->family = spec->name + 1; spec->name = chp + 1; } } else { spec->family = spec->name; } /* now break out the unit */ chp = strchr(spec->name, '@'); if (chp == NULL) { spec->unit = NULL; chp = spec->name; } else { *chp = '\0'; chp += 1; spec->unit = chp; } /* finally any args */ chp = strchr(chp, ':'); if (chp == NULL) spec->args = NULL; else { *chp = '\0'; spec->args = chp+1; } return 1; } /* device the value, returning the next non-space token */ static char * split_value (name_specifier *spec) { char *token; if (spec->value == NULL) return NULL; /* skip leading white space */ while (isspace (spec->value[0])) spec->value++; if (spec->value[0] == '\0') { spec->value = NULL; return NULL; } token = spec->value; /* find trailing space */ while (spec->value[0] != '\0' && !isspace (spec->value[0])) spec->value++; /* chop this value out */ if (spec->value[0] != '\0') { spec->value[0] = '\0'; spec->value++; } return token; } /* traverse the path specified by spec starting at current */ static struct hw * split_find_device (struct hw *current, name_specifier *spec) { /* strip off (and process) any leading ., .., ./ and / */ while (1) { if (strncmp (spec->path, "/", strlen ("/")) == 0) { /* cd /... */ while (current != NULL && hw_parent (current) != NULL) current = hw_parent (current); spec->path += strlen ("/"); } else if (strncmp (spec->path, "./", strlen ("./")) == 0) { /* cd ./... */ current = current; spec->path += strlen ("./"); } else if (strncmp (spec->path, "../", strlen ("../")) == 0) { /* cd ../... */ if (current != NULL && hw_parent (current) != NULL) current = hw_parent (current); spec->path += strlen ("../"); } else if (strcmp (spec->path, ".") == 0) { /* cd . */ current = current; spec->path += strlen ("."); } else if (strcmp (spec->path, "..") == 0) { /* cd .. */ if (current != NULL && hw_parent (current) != NULL) current = hw_parent (current); spec->path += strlen (".."); } else break; } /* now go through the path proper */ if (current == NULL) { split_device_name (spec); return NULL; } while (split_device_name (spec)) { struct hw *child; for (child = hw_child (current); child != NULL; child = hw_sibling (child)) { if (strcmp (spec->name, hw_name (child)) == 0) { if (spec->unit == NULL) break; else { hw_unit phys; hw_unit_decode (current, spec->unit, &phys); if (memcmp (&phys, hw_unit_address (child), sizeof (hw_unit)) == 0) break; } } } if (child == NULL) return current; /* search failed */ current = child; } return current; } static struct hw * split_fill_path (struct hw *current, const char *device_specifier, name_specifier *spec) { /* break it up */ if (!split_device_specifier (current, device_specifier, spec)) hw_abort (current, "error parsing %s\n", device_specifier); /* fill our tree with its contents */ current = split_find_device (current, spec); /* add any additional devices as needed */ if (spec->name != NULL) { do { if (current != NULL && !hw_finished_p (current)) hw_finish (current); current = hw_create (NULL, current, spec->family, spec->name, spec->unit, spec->args); } while (split_device_name (spec)); } return current; } /* <non-white-space> */ static const char * skip_token(const char *chp) { while (!isspace(*chp) && *chp != '\0') chp++; while (isspace(*chp) && *chp != '\0') chp++; return chp; } /* count the number of entries */ static int count_entries (struct hw *current, const char *property_name, const char *property_value, int modulo) { const char *chp = property_value; int nr_entries = 0; while (*chp != '\0') { nr_entries += 1; chp = skip_token (chp); } if ((nr_entries % modulo) != 0) { hw_abort (current, "incorrect number of entries for %s property %s, should be multiple of %d", property_name, property_value, modulo); } return nr_entries / modulo; } /* parse: <address> ::= <token> ; device dependant */ static const char * parse_address (struct hw *current, struct hw *bus, const char *chp, hw_unit *address) { if (hw_unit_decode (bus, chp, address) < 0) hw_abort (current, "invalid unit address in %s", chp); return skip_token (chp); } /* parse: <size> ::= <number> { "," <number> } ; */ static const char * parse_size (struct hw *current, struct hw *bus, const char *chp, hw_unit *size) { int i; int nr; const char *curr = chp; memset(size, 0, sizeof(*size)); /* parse the numeric list */ size->nr_cells = hw_unit_nr_size_cells (bus); nr = 0; while (1) { char *next; size->cells[nr] = strtoul (curr, &next, 0); if (curr == next) hw_abort (current, "Problem parsing <size> %s", chp); nr += 1; if (next[0] != ',') break; if (nr == size->nr_cells) hw_abort (current, "Too many values in <size> %s", chp); curr = next + 1; } ASSERT (nr > 0 && nr <= size->nr_cells); /* right align the numbers */ for (i = 1; i <= size->nr_cells; i++) { if (i <= nr) size->cells[size->nr_cells - i] = size->cells[nr - i]; else size->cells[size->nr_cells - i] = 0; } return skip_token (chp); } /* parse: <reg> ::= { <address> <size> } ; */ static void parse_reg_property (struct hw *current, const char *property_name, const char *property_value) { int nr_regs; int reg_nr; reg_property_spec *regs; const char *chp; /* determine the number of reg entries by counting tokens */ nr_regs = count_entries (current, property_name, property_value, 2); /* create working space */ regs = zalloc (nr_regs * sizeof (*regs)); /* fill it in */ chp = property_value; for (reg_nr = 0; reg_nr < nr_regs; reg_nr++) { chp = parse_address (current, hw_parent(current), chp, ®s[reg_nr].address); chp = parse_size (current, hw_parent(current), chp, ®s[reg_nr].size); } /* create it */ hw_add_reg_array_property (current, property_name, regs, nr_regs); zfree (regs); } /* { <child-address> <parent-address> <child-size> }* */ static void parse_ranges_property (struct hw *current, const char *property_name, const char *property_value) { int nr_ranges; int range_nr; range_property_spec *ranges; const char *chp; /* determine the number of ranges specified */ nr_ranges = count_entries (current, property_name, property_value, 3); /* create a property of that size */ ranges = zalloc (nr_ranges * sizeof(*ranges)); /* fill it in */ chp = property_value; for (range_nr = 0; range_nr < nr_ranges; range_nr++) { chp = parse_address (current, current, chp, &ranges[range_nr].child_address); chp = parse_address (current, hw_parent(current), chp, &ranges[range_nr].parent_address); chp = parse_size (current, current, chp, &ranges[range_nr].size); } /* create it */ hw_add_range_array_property (current, property_name, ranges, nr_ranges); zfree (ranges); } /* <integer> ... */ static void parse_integer_property (struct hw *current, const char *property_name, const char *property_value) { int nr_entries; unsigned_cell words[1024]; /* integer or integer array? */ nr_entries = 0; while (1) { char *end; words[nr_entries] = strtoul (property_value, &end, 0); if (property_value == end) break; nr_entries += 1; if (nr_entries * sizeof (words[0]) >= sizeof (words)) hw_abort (current, "buffer overflow"); property_value = end; } if (nr_entries == 0) hw_abort (current, "error parsing integer property %s (%s)", property_name, property_value); else if (nr_entries == 1) hw_add_integer_property (current, property_name, words[0]); else { int i; for (i = 0; i < nr_entries; i++) { H2BE (words[i]); } /* perhaphs integer array property is better */ hw_add_array_property (current, property_name, words, sizeof(words[0]) * nr_entries); } } /* <string> ... */ static void parse_string_property (struct hw *current, const char *property_name, const char *property_value) { char **strings; const char *chp; int nr_strings; int approx_nr_strings; /* get an estimate as to the number of strings by counting double quotes */ approx_nr_strings = 2; for (chp = property_value; *chp; chp++) { if (*chp == '"') approx_nr_strings++; } approx_nr_strings = (approx_nr_strings) / 2; /* create a string buffer for that many (plus a null) */ strings = (char**) zalloc ((approx_nr_strings + 1) * sizeof(char*)); /* now find all the strings */ chp = property_value; nr_strings = 0; while (1) { /* skip leading space */ while (*chp != '\0' && isspace (*chp)) chp += 1; if (*chp == '\0') break; /* copy it in */ if (*chp == '"') { /* a quoted string - watch for '\' et.al. */ /* estimate the size and allocate space for it */ int pos; chp++; pos = 0; while (chp[pos] != '\0' && chp[pos] != '"') { if (chp[pos] == '\\' && chp[pos+1] != '\0') pos += 2; else pos += 1; } strings[nr_strings] = zalloc (pos + 1); /* copy the string over */ pos = 0; while (*chp != '\0' && *chp != '"') { if (*chp == '\\' && *(chp+1) != '\0') { strings[nr_strings][pos] = *(chp+1); chp += 2; pos++; } else { strings[nr_strings][pos] = *chp; chp += 1; pos++; } } if (*chp != '\0') chp++; strings[nr_strings][pos] = '\0'; } else { /* copy over a single unquoted token */ int len = 0; while (chp[len] != '\0' && !isspace(chp[len])) len++; strings[nr_strings] = zalloc(len + 1); strncpy(strings[nr_strings], chp, len); strings[nr_strings][len] = '\0'; chp += len; } nr_strings++; if (nr_strings > approx_nr_strings) hw_abort (current, "String property %s badly formatted", property_name); } ASSERT (strings[nr_strings] == NULL); /* from zalloc */ /* install it */ if (nr_strings == 0) hw_add_string_property (current, property_name, ""); else if (nr_strings == 1) hw_add_string_property (current, property_name, strings[0]); else { const char **specs = (const char**) strings; /* stop a bogus error */ hw_add_string_array_property (current, property_name, specs, nr_strings); } /* flush the created string */ while (nr_strings > 0) { nr_strings--; zfree (strings[nr_strings]); } zfree(strings); } /* <path-to-ihandle-device> */ #if NOT_YET static void parse_ihandle_property (struct hw *current, const char *property, const char *value) { ihandle_runtime_property_spec ihandle; /* pass the full path */ ihandle.full_path = value; /* save this ready for the ihandle create */ hw_add_ihandle_runtime_property (current, property, &ihandle); } #endif struct hw * hw_tree_create (SIM_DESC sd, const char *family) { return hw_create (sd, NULL, family, family, NULL, NULL); } void hw_tree_delete (struct hw *me) { /* Need to allow devices to disapear under our feet */ while (hw_child (me) != NULL) { hw_tree_delete (hw_child (me)); } hw_delete (me); } struct hw * hw_tree_parse (struct hw *current, const char *fmt, ...) { va_list ap; va_start (ap, fmt); current = hw_tree_vparse (current, fmt, ap); va_end (ap); return current; } struct hw * hw_tree_vparse (struct hw *current, const char *fmt, va_list ap) { char device_specifier[1024]; name_specifier spec; /* format the path */ vsprintf (device_specifier, fmt, ap); if (strlen (device_specifier) >= sizeof (device_specifier)) hw_abort (NULL, "device_tree_add_deviced: buffer overflow\n"); /* construct the tree down to the final struct hw */ current = split_fill_path (current, device_specifier, &spec); /* is there an interrupt spec */ if (spec.property == NULL && spec.value != NULL) { char *op = split_value (&spec); switch (op[0]) { case '>': { char *my_port_name = split_value (&spec); int my_port; char *dest_port_name = split_value (&spec); int dest_port; name_specifier dest_spec; char *dest_hw_name = split_value (&spec); struct hw *dest; /* find my name */ if (!hw_finished_p (current)) hw_finish (current); my_port = hw_port_decode (current, my_port_name, output_port); /* find the dest device and port */ dest = split_fill_path (current, dest_hw_name, &dest_spec); if (!hw_finished_p (dest)) hw_finish (dest); dest_port = hw_port_decode (dest, dest_port_name, input_port); /* connect the two */ hw_port_attach (current, my_port, dest, dest_port, permenant_object); break; } default: hw_abort (current, "unreconised interrupt spec %s\n", spec.value); break; } } /* is there a property */ if (spec.property != NULL) { if (strcmp (spec.value, "true") == 0) hw_add_boolean_property (current, spec.property, 1); else if (strcmp (spec.value, "false") == 0) hw_add_boolean_property (current, spec.property, 0); else { const struct hw_property *property; switch (spec.value[0]) { #if NOT_YET case '*': { parse_ihandle_property (current, spec.property, spec.value + 1); break; } #endif case '[': { unsigned8 words[1024]; char *curr = spec.value + 1; int nr_words = 0; while (1) { char *next; words[nr_words] = H2BE_1 (strtoul (curr, &next, 0)); if (curr == next) break; curr = next; nr_words += 1; } hw_add_array_property (current, spec.property, words, sizeof(words[0]) * nr_words); break; } case '"': { parse_string_property (current, spec.property, spec.value); break; } case '!': { spec.value++; property = hw_tree_find_property (current, spec.value); if (property == NULL) hw_abort (current, "property %s not found\n", spec.value); hw_add_duplicate_property (current, spec.property, property); break; } default: { if (strcmp (spec.property, "reg") == 0 || strcmp (spec.property, "assigned-addresses") == 0 || strcmp (spec.property, "alternate-reg") == 0) { parse_reg_property (current, spec.property, spec.value); } else if (strcmp (spec.property, "ranges") == 0) { parse_ranges_property (current, spec.property, spec.value); } else if (isdigit(spec.value[0]) || (spec.value[0] == '-' && isdigit(spec.value[1])) || (spec.value[0] == '+' && isdigit(spec.value[1]))) { parse_integer_property(current, spec.property, spec.value); } else parse_string_property(current, spec.property, spec.value); break; } } } } return current; } static void finish_hw_tree (struct hw *me, void *data) { if (!hw_finished_p (me)) hw_finish (me); } void hw_tree_finish (struct hw *root) { hw_tree_traverse (root, finish_hw_tree, NULL, NULL); } void hw_tree_traverse (struct hw *root, hw_tree_traverse_function *prefix, hw_tree_traverse_function *postfix, void *data) { struct hw *child; if (prefix != NULL) prefix (root, data); for (child = hw_child (root); child != NULL; child = hw_sibling (child)) { hw_tree_traverse (child, prefix, postfix, data); } if (postfix != NULL) postfix (root, data); } struct printer { hw_tree_print_callback *print; void *file; }; static void print_address (struct hw *bus, const hw_unit *phys, struct printer *p) { char unit[32]; hw_unit_encode (bus, phys, unit, sizeof(unit)); p->print (p->file, " %s", unit); } static void print_size (struct hw *bus, const hw_unit *size, struct printer *p) { int i; for (i = 0; i < size->nr_cells; i++) if (size->cells[i] != 0) break; if (i < size->nr_cells) { p->print (p->file, " 0x%lx", (unsigned long) size->cells[i]); i++; for (; i < size->nr_cells; i++) p->print (p->file, ",0x%lx", (unsigned long) size->cells[i]); } else p->print (p->file, " 0"); } static void print_reg_property (struct hw *me, const struct hw_property *property, struct printer *p) { int reg_nr; reg_property_spec reg; for (reg_nr = 0; hw_find_reg_array_property (me, property->name, reg_nr, ®); reg_nr++) { print_address (hw_parent (me), ®.address, p); print_size (me, ®.size, p); } } static void print_ranges_property (struct hw *me, const struct hw_property *property, struct printer *p) { int range_nr; range_property_spec range; for (range_nr = 0; hw_find_range_array_property (me, property->name, range_nr, &range); range_nr++) { print_address (me, &range.child_address, p); print_address (hw_parent (me), &range.parent_address, p); print_size (me, &range.size, p); } } static void print_string (struct hw *me, const char *string, struct printer *p) { p->print (p->file, " \""); while (*string != '\0') { switch (*string) { case '"': p->print (p->file, "\\\""); break; case '\\': p->print (p->file, "\\\\"); break; default: p->print (p->file, "%c", *string); break; } string++; } p->print (p->file, "\""); } static void print_string_array_property (struct hw *me, const struct hw_property *property, struct printer *p) { int nr; string_property_spec string; for (nr = 0; hw_find_string_array_property (me, property->name, nr, &string); nr++) { print_string (me, string, p); } } static void print_properties (struct hw *me, struct printer *p) { const struct hw_property *property; for (property = hw_find_property (me, NULL); property != NULL; property = hw_next_property (property)) { if (hw_parent (me) == NULL) p->print (p->file, "/%s", property->name); else p->print (p->file, "%s/%s", hw_path (me), property->name); if (property->original != NULL) { p->print (p->file, " !"); p->print (p->file, "%s/%s", hw_path (property->original->owner), property->original->name); } else { switch (property->type) { case array_property: { if ((property->sizeof_array % sizeof (signed_cell)) == 0) { unsigned_cell *w = (unsigned_cell*) property->array; int cell_nr; for (cell_nr = 0; cell_nr < (property->sizeof_array / sizeof (unsigned_cell)); cell_nr++) { p->print (p->file, " 0x%lx", (unsigned long) BE2H_cell (w[cell_nr])); } } else { unsigned8 *w = (unsigned8*)property->array; p->print (p->file, " ["); while ((char*)w - (char*)property->array < property->sizeof_array) { p->print (p->file, " 0x%2x", BE2H_1 (*w)); w++; } } break; } case boolean_property: { int b = hw_find_boolean_property(me, property->name); p->print (p->file, " %s", b ? "true" : "false"); break; } #if NOT_YET case ihandle_property: { if (property->array != NULL) { device_instance *instance = hw_find_ihandle_property (me, property->name); p->print (p->file, " *%s", device_instance_path(instance)); } else { /* not yet initialized, ask the device for the path */ ihandle_runtime_property_spec spec; hw_find_ihandle_runtime_property (me, property->name, &spec); p->print (p->file, " *%s", spec.full_path); } break; } #endif case integer_property: { unsigned_word w = hw_find_integer_property (me, property->name); p->print (p->file, " 0x%lx", (unsigned long)w); break; } case range_array_property: { print_ranges_property (me, property, p); break; } case reg_array_property: { print_reg_property (me, property, p); break; } case string_property: { const char *s = hw_find_string_property (me, property->name); print_string (me, s, p); break; } case string_array_property: { print_string_array_property (me, property, p); break; } } } p->print (p->file, "\n"); } } static void print_interrupts (struct hw *me, int my_port, struct hw *dest, int dest_port, void *data) { struct printer *p = data; char src[32]; char dst[32]; hw_port_encode (me, my_port, src, sizeof(src), output_port); hw_port_encode (dest, dest_port, dst, sizeof(dst), input_port); p->print (p->file, "%s > %s %s %s\n", hw_path (me), src, dst, hw_path (dest)); } static void print_device (struct hw *me, void *data) { struct printer *p = data; p->print (p->file, "%s\n", hw_path (me)); print_properties (me, p); hw_port_traverse (me, print_interrupts, data); } void hw_tree_print (struct hw *root, hw_tree_print_callback *print, void *file) { struct printer p; p.print = print; p.file = file; hw_tree_traverse (root, print_device, NULL, &p); } #if NOT_YET device_instance * tree_instance(struct hw *root, const char *device_specifier) { /* find the device node */ struct hw *me; name_specifier spec; if (!split_device_specifier(root, device_specifier, &spec)) return NULL; me = split_find_device(root, &spec); if (spec.name != NULL) return NULL; /* create the instance */ return device_create_instance(me, device_specifier, spec.last_args); } #endif struct hw * hw_tree_find_device (struct hw *root, const char *path_to_device) { struct hw *node; name_specifier spec; /* parse the path */ split_device_specifier (root, path_to_device, &spec); if (spec.value != NULL) return NULL; /* something wierd */ /* now find it */ node = split_find_device (root, &spec); if (spec.name != NULL) return NULL; /* not a leaf */ return node; } const struct hw_property * hw_tree_find_property (struct hw *root, const char *path_to_property) { name_specifier spec; if (!split_property_specifier (root, path_to_property, &spec)) hw_abort (root, "Invalid property path %s", path_to_property); root = split_find_device (root, &spec); if (spec.name != NULL) return NULL; /* not a leaf */ return hw_find_property (root, spec.property); } int hw_tree_find_boolean_property (struct hw *root, const char *path_to_property) { name_specifier spec; if (!split_property_specifier (root, path_to_property, &spec)) hw_abort (root, "Invalid property path %s", path_to_property); root = split_find_device (root, &spec); if (spec.name != NULL) hw_abort (root, "device \"%s\" not found (property \"%s\")", spec.name, path_to_property); return hw_find_boolean_property (root, spec.property); } signed_cell hw_tree_find_integer_property (struct hw *root, const char *path_to_property) { name_specifier spec; if (!split_property_specifier (root, path_to_property, &spec)) hw_abort (root, "Invalid property path %s", path_to_property); root = split_find_device (root, &spec); if (spec.name != NULL) hw_abort (root, "device \"%s\" not found (property \"%s\")", spec.name, path_to_property); return hw_find_integer_property (root, spec.property); } #if NOT_YET device_instance * hw_tree_find_ihandle_property (struct hw *root, const char *path_to_property) { struct hw *root; name_specifier spec; if (!split_property_specifier (root, path_to_property, &spec)) hw_abort (root, "Invalid property path %s", path_to_property); root = split_find_device (root, &spec); if (spec.name != NULL) hw_abort (root, "device \"%s\" not found (property \"%s\")", spec.name, path_to_property); return hw_find_ihandle_property (root, spec.property); } #endif const char * hw_tree_find_string_property (struct hw *root, const char *path_to_property) { name_specifier spec; if (!split_property_specifier (root, path_to_property, &spec)) hw_abort (root, "Invalid property path %s", path_to_property); root = split_find_device (root, &spec); if (spec.name != NULL) hw_abort (root, "device \"%s\" not found (property \"%s\")", spec.name, path_to_property); return hw_find_string_property (root, spec.property); }