1*9e39c5baSBill Taylor /*
2*9e39c5baSBill Taylor * CDDL HEADER START
3*9e39c5baSBill Taylor *
4*9e39c5baSBill Taylor * The contents of this file are subject to the terms of the
5*9e39c5baSBill Taylor * Common Development and Distribution License (the "License").
6*9e39c5baSBill Taylor * You may not use this file except in compliance with the License.
7*9e39c5baSBill Taylor *
8*9e39c5baSBill Taylor * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*9e39c5baSBill Taylor * or http://www.opensolaris.org/os/licensing.
10*9e39c5baSBill Taylor * See the License for the specific language governing permissions
11*9e39c5baSBill Taylor * and limitations under the License.
12*9e39c5baSBill Taylor *
13*9e39c5baSBill Taylor * When distributing Covered Code, include this CDDL HEADER in each
14*9e39c5baSBill Taylor * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*9e39c5baSBill Taylor * If applicable, add the following below this CDDL HEADER, with the
16*9e39c5baSBill Taylor * fields enclosed by brackets "[]" replaced with your own identifying
17*9e39c5baSBill Taylor * information: Portions Copyright [yyyy] [name of copyright owner]
18*9e39c5baSBill Taylor *
19*9e39c5baSBill Taylor * CDDL HEADER END
20*9e39c5baSBill Taylor */
21*9e39c5baSBill Taylor
22*9e39c5baSBill Taylor /*
23*9e39c5baSBill Taylor * Copyright (c) 2002-2003, Network Appliance, Inc. All rights reserved.
24*9e39c5baSBill Taylor */
25*9e39c5baSBill Taylor
26*9e39c5baSBill Taylor /*
27*9e39c5baSBill Taylor * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
28*9e39c5baSBill Taylor * Use is subject to license terms.
29*9e39c5baSBill Taylor */
30*9e39c5baSBill Taylor
31*9e39c5baSBill Taylor #include "dapl_mr_util.h"
32*9e39c5baSBill Taylor
33*9e39c5baSBill Taylor /*
34*9e39c5baSBill Taylor *
35*9e39c5baSBill Taylor * MODULE: dapl_mr_util.c
36*9e39c5baSBill Taylor *
37*9e39c5baSBill Taylor * PURPOSE: Common Memory Management functions and data structures
38*9e39c5baSBill Taylor *
39*9e39c5baSBill Taylor */
40*9e39c5baSBill Taylor
41*9e39c5baSBill Taylor /*
42*9e39c5baSBill Taylor *
43*9e39c5baSBill Taylor * Function Definitions
44*9e39c5baSBill Taylor *
45*9e39c5baSBill Taylor */
46*9e39c5baSBill Taylor
47*9e39c5baSBill Taylor /*
48*9e39c5baSBill Taylor * dapl_mr_get_address
49*9e39c5baSBill Taylor *
50*9e39c5baSBill Taylor * Returns the memory address associated with the given memory descriptor
51*9e39c5baSBill Taylor *
52*9e39c5baSBill Taylor */
53*9e39c5baSBill Taylor DAT_VADDR
dapl_mr_get_address(DAT_REGION_DESCRIPTION desc,DAT_MEM_TYPE type)54*9e39c5baSBill Taylor dapl_mr_get_address(DAT_REGION_DESCRIPTION desc, DAT_MEM_TYPE type)
55*9e39c5baSBill Taylor {
56*9e39c5baSBill Taylor switch (type) {
57*9e39c5baSBill Taylor case DAT_MEM_TYPE_VIRTUAL: {
58*9e39c5baSBill Taylor return ((DAT_VADDR)(uintptr_t)desc.for_va);
59*9e39c5baSBill Taylor }
60*9e39c5baSBill Taylor case DAT_MEM_TYPE_LMR: {
61*9e39c5baSBill Taylor DAPL_LMR *lmr;
62*9e39c5baSBill Taylor
63*9e39c5baSBill Taylor lmr = (DAPL_LMR *)desc.for_lmr_handle;
64*9e39c5baSBill Taylor
65*9e39c5baSBill Taylor /* Since this function is recoursive we cannot inline it */
66*9e39c5baSBill Taylor return (dapl_mr_get_address(lmr->param.region_desc,
67*9e39c5baSBill Taylor lmr->param.mem_type));
68*9e39c5baSBill Taylor }
69*9e39c5baSBill Taylor case DAT_MEM_TYPE_SHARED_VIRTUAL: {
70*9e39c5baSBill Taylor return ((DAT_VADDR)(uintptr_t)
71*9e39c5baSBill Taylor desc.for_shared_memory.virtual_address);
72*9e39c5baSBill Taylor }
73*9e39c5baSBill Taylor default:
74*9e39c5baSBill Taylor dapl_os_assert(0);
75*9e39c5baSBill Taylor return (0);
76*9e39c5baSBill Taylor }
77*9e39c5baSBill Taylor }
78*9e39c5baSBill Taylor
79*9e39c5baSBill Taylor /*
80*9e39c5baSBill Taylor * dapl_mr_bounds_check
81*9e39c5baSBill Taylor *
82*9e39c5baSBill Taylor * Returns true if region B is contained within region A
83*9e39c5baSBill Taylor * and false otherwise
84*9e39c5baSBill Taylor *
85*9e39c5baSBill Taylor */
86*9e39c5baSBill Taylor DAT_BOOLEAN
dapl_mr_bounds_check(DAT_VADDR addr_a,DAT_VLEN length_a,DAT_VADDR addr_b,DAT_VLEN length_b)87*9e39c5baSBill Taylor dapl_mr_bounds_check(DAT_VADDR addr_a, DAT_VLEN length_a,
88*9e39c5baSBill Taylor DAT_VADDR addr_b, DAT_VLEN length_b)
89*9e39c5baSBill Taylor {
90*9e39c5baSBill Taylor if ((addr_a <= addr_b) &&
91*9e39c5baSBill Taylor (addr_b + length_b) <= (addr_a + length_a)) {
92*9e39c5baSBill Taylor return (DAT_TRUE);
93*9e39c5baSBill Taylor } else {
94*9e39c5baSBill Taylor return (DAT_FALSE);
95*9e39c5baSBill Taylor }
96*9e39c5baSBill Taylor }
97