dapl_mr_util.c revision 9517:b4839b0aa7a4
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 2003 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31#include "dapl_mr_util.h" 32 33/* 34 * 35 * MODULE: dapl_mr_util.c 36 * 37 * PURPOSE: Common Memory Management functions and data structures 38 * 39 */ 40 41/* 42 * 43 * Function Definitions 44 * 45 */ 46 47/* 48 * dapl_mr_get_address 49 * 50 * Returns the memory address associated with the given memory descriptor 51 * 52 */ 53DAT_VADDR 54dapl_mr_get_address(DAT_REGION_DESCRIPTION desc, DAT_MEM_TYPE type) 55{ 56 switch (type) { 57 case DAT_MEM_TYPE_VIRTUAL: { 58 return ((DAT_VADDR)(uintptr_t)desc.for_va); 59 } 60 case DAT_MEM_TYPE_LMR: { 61 DAPL_LMR *lmr; 62 63 lmr = (DAPL_LMR *)desc.for_lmr_handle; 64 65 /* Since this function is recoursive we cannot inline it */ 66 return (dapl_mr_get_address(lmr->param.region_desc, 67 lmr->param.mem_type)); 68 } 69 case DAT_MEM_TYPE_SHARED_VIRTUAL: { 70 return ((DAT_VADDR)(uintptr_t) 71 desc.for_shared_memory.virtual_address); 72 } 73 default: 74 dapl_os_assert(0); 75 return (0); 76 } 77} 78 79/* 80 * dapl_mr_bounds_check 81 * 82 * Returns true if region B is contained within region A 83 * and false otherwise 84 * 85 */ 86DAT_BOOLEAN 87dapl_mr_bounds_check(DAT_VADDR addr_a, DAT_VLEN length_a, 88 DAT_VADDR addr_b, DAT_VLEN length_b) 89{ 90 if ((addr_a <= addr_b) && 91 (addr_b + length_b) <= (addr_a + length_a)) { 92 return (DAT_TRUE); 93 } else { 94 return (DAT_FALSE); 95 } 96} 97