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 (c) 2002-2003, Network Appliance, Inc. All rights reserved.
24 */
25
26/*
27 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
28 * Use is subject to license terms.
29 */
30
31
32/*
33 *
34 * MODULE: dapl_lmr_util.c
35 *
36 * PURPOSE: Memory management support routines
37 * Description: Support routines for LMR functions
38 *
39 */
40
41#include <sys/ib/ibtl/ibtl_types.h>
42#include "dapl_lmr_util.h"
43#include "dapl_ia_util.h"
44
45DAPL_LMR *
46dapl_lmr_alloc(IN DAPL_IA *ia,
47	IN DAT_MEM_TYPE mem_type,
48	IN DAT_REGION_DESCRIPTION region_desc,
49	IN DAT_VLEN length,
50	IN DAT_PZ_HANDLE pz_handle,
51	IN DAT_MEM_PRIV_FLAGS mem_priv)
52{
53	DAPL_LMR *lmr;
54
55	/* Allocate LMR */
56	lmr = (DAPL_LMR *)dapl_os_alloc(sizeof (DAPL_LMR));
57	if (NULL == lmr) {
58		return (NULL);
59	}
60
61	/* zero the structure */
62	(void) dapl_os_memzero(lmr, sizeof (DAPL_LMR));
63
64	/*
65	 * initialize the header
66	 */
67	lmr->header.provider = ia->header.provider;
68	lmr->header.magic = DAPL_MAGIC_LMR;
69	lmr->header.handle_type = DAT_HANDLE_TYPE_LMR;
70	lmr->header.owner_ia = ia;
71	lmr->header.user_context.as_64 = 0;
72	lmr->header.user_context.as_ptr = NULL;
73	dapl_llist_init_entry(&lmr->header.ia_list_entry);
74	dapl_ia_link_lmr(ia, lmr);
75	dapl_os_lock_init(&lmr->header.lock);
76
77	/*
78	 * initialize the body
79	 */
80	lmr->param.ia_handle = (DAT_IA_HANDLE)ia;
81	lmr->param.mem_type = mem_type;
82	lmr->param.region_desc = region_desc;
83	lmr->param.length = length;
84	lmr->param.pz_handle = pz_handle;
85	lmr->param.mem_priv = mem_priv;
86	lmr->lmr_ref_count = 0;
87
88	return (lmr);
89}
90
91void
92dapl_lmr_dealloc(IN DAPL_LMR *lmr)
93{
94	/* reset magic to prevent reuse */
95	lmr->header.magic = DAPL_MAGIC_INVALID;
96	dapl_ia_unlink_lmr(lmr->header.owner_ia, lmr);
97	dapl_os_lock_destroy(&lmr->header.lock);
98
99	dapl_os_free((void *) lmr, sizeof (DAPL_LMR));
100}
101
102int32_t
103dapl_lmr_convert_privileges(IN DAT_MEM_PRIV_FLAGS privileges)
104{
105	int32_t value = 0;
106
107	/*
108	 *    if (DAT_MEM_PRIV_LOCAL_READ_FLAG & privileges)
109	 *	do nothing
110	 */
111	if (DAT_MEM_PRIV_LOCAL_WRITE_FLAG & privileges) {
112		value |= IB_ACCESS_LOCAL_WRITE;
113	}
114	if (DAT_MEM_PRIV_REMOTE_READ_FLAG & privileges) {
115		value |= IB_ACCESS_REMOTE_READ;
116	}
117	if (DAT_MEM_PRIV_REMOTE_WRITE_FLAG & privileges) {
118		value |= IB_ACCESS_REMOTE_WRITE;
119	}
120	if (DAT_MEM_PRIV_RO_DISABLE_FLAG & privileges) {
121		value |= IBT_MR_DISABLE_RO;
122	}
123	return (value);
124}
125