usr/src/uts/common/io/ib/ibtl/ibtl_part.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  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  23  */
  24
  25 #include <sys/types.h>
  26 #include <sys/kmem.h>
  27 #include <sys/ksynch.h>
  28 #include <sys/ib/ibtl/ibti_common.h>
  29
  30 kmutex_t        ibtl_part_attr_mutex;
  31 ibt_status_t    (*ibtl_get_part_attr_cb)(datalink_id_t, ibt_part_attr_t *);
  32 ibt_status_t    (*ibtl_get_all_part_attr_cb)(ibt_part_attr_t **, int *);
  33
  34 void
  35 ibt_register_part_attr_cb(
  36     ibt_status_t (*get_part_attr)(datalink_id_t, ibt_part_attr_t *),
  37     ibt_status_t (*get_all_part_attr)(ibt_part_attr_t **, int *))
  38 {
  39         mutex_enter(&ibtl_part_attr_mutex);
  40         ibtl_get_part_attr_cb = get_part_attr;
  41         ibtl_get_all_part_attr_cb = get_all_part_attr;
  42         mutex_exit(&ibtl_part_attr_mutex);
  43 }
  44
  45 void
  46 ibt_unregister_part_attr_cb(void)
  47 {
  48         mutex_enter(&ibtl_part_attr_mutex);
  49         ibtl_get_part_attr_cb = NULL;
  50         ibtl_get_all_part_attr_cb = NULL;
  51         mutex_exit(&ibtl_part_attr_mutex);
  52 }
  53
  54 ibt_status_t
  55 ibt_get_part_attr(datalink_id_t linkid, ibt_part_attr_t *attr)
  56 {
  57         ibt_status_t    status;
  58
  59         mutex_enter(&ibtl_part_attr_mutex);
  60         if (ibtl_get_part_attr_cb != NULL)
  61                 status = (*ibtl_get_part_attr_cb) (linkid, attr);
  62         else
  63                 status = IBT_NO_SUCH_OBJECT;
  64         mutex_exit(&ibtl_part_attr_mutex);
  65
  66         return (status);
  67 }
  68
  69 ibt_status_t
  70 ibt_get_all_part_attr(ibt_part_attr_t **attr, int *nparts)
  71 {
  72         ibt_status_t    status;
  73
  74         mutex_enter(&ibtl_part_attr_mutex);
  75         if (ibtl_get_all_part_attr_cb != NULL)
  76                 status = (*ibtl_get_all_part_attr_cb) (attr, nparts);
  77         else {
  78                 *attr = NULL;
  79                 *nparts = 0;
  80                 status = IBT_SUCCESS;
  81         }
  82         mutex_exit(&ibtl_part_attr_mutex);
  83
  84         return (status);
  85 }
  86
  87 ibt_status_t
  88 ibt_free_part_attr(ibt_part_attr_t *attr, int nparts)
  89 {
  90         if (nparts > 0)
  91                 kmem_free(attr, sizeof (ibt_part_attr_t) * nparts);
  92         return (IBT_SUCCESS);
  93 }