usr/src/cmd/picl/plugins/sun4v/pri/init.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <sys/types.h>
  30 #include <errno.h>
  31 #include <malloc.h>
  32 #include <mdesc.h>
  33 #include <pri.h>
  34 #include "priplugin.h"
  35
  36 static void pri_free(void *bufp, size_t size);
  37 static uint64_t *md_bufp = NULL;
  38 static uint64_t *new_md_bufp;
  39
  40 int
  41 pri_devinit(uint64_t *tok)
  42 {
  43         int status;
  44
  45         new_md_bufp = NULL;
  46         status = 0;
  47         if (pri_get(PRI_WAITGET, tok, &new_md_bufp, malloc, pri_free) ==
  48             (ssize_t)-1) {
  49                 pri_debug(LOG_NOTICE, "pri_devinit: can'r read from "
  50                     "the PRI: %d\n", errno);
  51                 status = -1;
  52         }
  53         if (new_md_bufp == NULL) {
  54                 pri_debug(LOG_NOTICE, "pri_devinit: pri_get returned "
  55                     "NULL buffer!\n");
  56                 status = -1;
  57         }
  58         return (status);
  59 }
  60
  61 md_t *
  62 pri_bufinit(md_t *mdp)
  63 {
  64
  65         if (mdp)
  66                 md_fini(mdp);
  67         if (md_bufp)
  68                 free(md_bufp);
  69         md_bufp = new_md_bufp;
  70
  71         pri_debug(LOG_NOTICE, "pri_bufinit: done reading PRI\n");
  72
  73         /*
  74          * The PRI and the MD use the same data format so they can be
  75          * parsed by the same functions.
  76          */
  77         if (md_bufp) {
  78                 mdp = md_init_intern(md_bufp, malloc, pri_free);
  79                 if (mdp == NULL) {
  80                         pri_debug(LOG_NOTICE, "pri_bufinit: md_init_intern "
  81                         "failed\n");
  82                         free(md_bufp);
  83                         md_bufp = NULL;
  84                 } else {
  85                         pri_debug(LOG_NOTICE, "pri_bufinit: mdi_init_intern "
  86                             "completed successfully\n");
  87                 }
  88         } else
  89                 mdp = NULL;
  90
  91         pri_debug(LOG_NOTICE, "pri_bufinit: returning\n");
  92
  93         return (mdp);
  94 }
  95
  96 /*ARGSUSED*/
  97 static void
  98 pri_free(void *bufp, size_t size)
  99 {
 100         if (bufp)
 101                 free(bufp);
 102 }
 103
 104 void
 105 pri_devfini(md_t *mdp)
 106 {
 107         if (mdp)
 108                 (void) md_fini(mdp);
 109
 110         if (md_bufp)
 111                 free(md_bufp);
 112         md_bufp = NULL;
 113 }