/* $OpenBSD: pmap_bootstrap.c,v 1.1.1.1 2006/05/07 15:55:55 miod Exp $ */
/*
* Copyright (c) 2001-2004, Miodrag Vallat
* Copyright (c) 1998-2001 Steve Murphree, Jr.
* Copyright (c) 1996 Nivas Madhur
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Nivas Madhur.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* Mach Operating System
* Copyright (c) 1991 Carnegie Mellon University
* Copyright (c) 1991 OMRON Corporation
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <uvm/uvm.h>
extern vaddr_t pmap_map(vaddr_t, paddr_t, paddr_t, vm_prot_t, u_int);
extern vaddr_t avail_start;
extern vaddr_t virtual_avail;
#define ETHERPAGES 16 /* 64 KB */
void *etherbuf = NULL;
size_t etherlen;
vaddr_t
pmap_bootstrap_md(vaddr_t vaddr)
{
/*
* Get ethernet buffer - need ETHERPAGES pages physically contiguous
* below 16MB.
*/
if (vaddr < 0x01000000 - ptoa(ETHERPAGES)) {
etherlen = ptoa(ETHERPAGES);
etherbuf = (void *)vaddr;
vaddr = pmap_map(vaddr, avail_start, avail_start + etherlen,
UVM_PROT_RW, CACHE_INH);
virtual_avail += etherlen;
avail_start += etherlen;
}
return vaddr;
}