/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_PMEM_H
#define _SYS_PMEM_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
/*
* PMEM - Direct mapping physical memory pages to userland process
*
* Provide consolidation private functions used for directly (w/o occupying
* kernel virtual address space) allocating and exporting physical memory pages
* to userland.
*/
/*
* Flags to pass to pmem_alloc
*/
#define PMEM_SLEEP 0x1
#define PMEM_NOSLEEP 0x2
/*
* Called by driver devmap routine to pass physical memory mapping info to
* seg_dev framework, used only for physical memory allocated from
* devmap_pmem_alloc().
*/
int devmap_pmem_setup(devmap_cookie_t, dev_info_t *dip,
struct devmap_callback_ctl *, devmap_pmem_cookie_t, offset_t,
size_t, uint_t, uint_t, ddi_device_acc_attr_t *);
/*
* Replace existing mapping using a new cookie, mainly gets called when doing
* fork(). Should be called in pertinent devmap_dup(9E).
*/
int devmap_pmem_remap(devmap_cookie_t, dev_info_t *dip,
devmap_pmem_cookie_t, offset_t, size_t, uint_t, uint_t,
ddi_device_acc_attr_t *);
/*
* Directly (i.e., without occupying kernel virtual address space) allocate
* 'npages' physical memory pages for exporting to user land. The allocated
* page_t pointer will be recorded in cookie.
*/
int devmap_pmem_alloc(size_t, uint_t, devmap_pmem_cookie_t *);
void devmap_pmem_free(devmap_pmem_cookie_t);
int devmap_pmem_getpfns(devmap_pmem_cookie_t, uint_t, pgcnt_t, pfn_t *);
void pmem_init();
#ifdef __cplusplus
}
#endif
#endif /* _SYS_PMEM_H */