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/* $OpenBSD: set_memory.h,v 1.3 2020/09/11 09:27:10 mpi Exp $ */
/*
* Copyright (c) 2013, 2014, 2015 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _ASM_SET_MEMORY_H
#define _ASM_SET_MEMORY_H
#include <sys/systm.h>
#include <sys/atomic.h>
#include <sys/param.h> /* for PAGE_SIZE on i386 */
#include <uvm/uvm_extern.h>
#include <machine/pmap.h>
#if defined(__amd64__) || defined(__i386__)
static inline int
set_pages_array_wb(struct vm_page **pages, int addrinarray)
{
int i;
for (i = 0; i < addrinarray; i++)
atomic_clearbits_int(&pages[i]->pg_flags, PG_PMAP_WC);
return 0;
}
static inline int
set_pages_array_wc(struct vm_page **pages, int addrinarray)
{
int i;
for (i = 0; i < addrinarray; i++)
atomic_setbits_int(&pages[i]->pg_flags, PG_PMAP_WC);
return 0;
}
static inline int
set_pages_array_uc(struct vm_page **pages, int addrinarray)
{
/* XXX */
return 0;
}
static inline int
set_pages_wb(struct vm_page *page, int numpages)
{
KASSERT(numpages == 1);
atomic_clearbits_int(&page->pg_flags, PG_PMAP_WC);
return 0;
}
static inline int
set_pages_uc(struct vm_page *page, int numpages)
{
/* XXX */
return 0;
}
#endif /* defined(__amd64__) || defined(__i386__) */
#endif
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