mdesc_subr.c

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    1 /*-
    2  * Copyright (c) 2006 Kip Macy
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD$");
   30 
   31 #include <sys/types.h>
   32 #include <sys/systm.h>
   33 #include <sys/malloc.h>
   34 
   35 
   36 #include <machine/cddl/mdesc.h>
   37 #include <machine/cddl/mdesc_impl.h>
   38 
   39 
   40 int
   41 md_get_prop_alloc(md_t *ptr, mde_cookie_t node, char *namep, int tag_type,
   42                  uint8_t **datap)
   43 {
   44         mde_str_cookie_t prop_name;
   45         md_impl_t       *mdp;
   46         mde_cookie_t     elem;
   47         int              len;
   48 
   49         mdp = (md_impl_t *)ptr;
   50 
   51         if (node == MDE_INVAL_ELEM_COOKIE) {
   52                 return (-1);
   53         }
   54 
   55         prop_name = md_find_name(ptr, namep);
   56         if (prop_name == MDE_INVAL_STR_COOKIE) {
   57                 return (-1);
   58         }
   59 
   60         elem = md_find_node_prop(mdp, node, prop_name, tag_type);
   61 
   62         if (elem != MDE_INVAL_ELEM_COOKIE) {
   63                 md_element_t *mdep;
   64                 mdep = &(mdp->mdep[(int)elem]);
   65 
   66                 len = (int)MDE_PROP_DATA_LEN(mdep);
   67                 KASSERT(len > 0, ("invalid length"));
   68                 *datap = malloc(len, M_MDPROP, M_WAITOK);
   69                 bcopy(mdp->datap + (int)MDE_PROP_DATA_OFFSET(mdep), *datap, len);
   70                 return (0);
   71         }
   72 
   73         return (-1);    /* no such property name */
   74 }
   75 
   76

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FreeBSD/Linux Kernel Cross Reference sys/sun4v/mdesc/mdesc_subr.c

FreeBSD/Linux Kernel Cross Reference
sys/sun4v/mdesc/mdesc_subr.c