/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2002-2003, Network Appliance, Inc. All rights reserved.
*/
/*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include "dapl_mr_util.h"
/*
*
* MODULE: dapl_mr_util.c
*
* PURPOSE: Common Memory Management functions and data structures
*
*/
/*
*
* Function Definitions
*
*/
/*
* dapl_mr_get_address
*
* Returns the memory address associated with the given memory descriptor
*
*/
DAT_VADDR
dapl_mr_get_address(DAT_REGION_DESCRIPTION desc, DAT_MEM_TYPE type)
{
switch (type) {
case DAT_MEM_TYPE_VIRTUAL: {
return ((DAT_VADDR)(uintptr_t)desc.for_va);
}
case DAT_MEM_TYPE_LMR: {
DAPL_LMR *lmr;
lmr = (DAPL_LMR *)desc.for_lmr_handle;
/* Since this function is recoursive we cannot inline it */
return (dapl_mr_get_address(lmr->param.region_desc,
lmr->param.mem_type));
}
case DAT_MEM_TYPE_SHARED_VIRTUAL: {
return ((DAT_VADDR)(uintptr_t)
desc.for_shared_memory.virtual_address);
}
default:
dapl_os_assert(0);
return (0);
}
}
/*
* dapl_mr_bounds_check
*
* Returns true if region B is contained within region A
* and false otherwise
*
*/
DAT_BOOLEAN
dapl_mr_bounds_check(DAT_VADDR addr_a, DAT_VLEN length_a,
DAT_VADDR addr_b, DAT_VLEN length_b)
{
if ((addr_a <= addr_b) &&
(addr_b + length_b) <= (addr_a + length_a)) {
return (DAT_TRUE);
} else {
return (DAT_FALSE);
}
}