src/sys/dev/pci/drm/include/linux/highmem.h

40 lines
1.3 KiB
C

/* $OpenBSD: highmem.h,v 1.4 2021/07/28 13:28:05 kettenis 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 _LINUX_HIGHMEM_H
#define _LINUX_HIGHMEM_H
#include <sys/param.h>
#include <uvm/uvm_extern.h>
#include <linux/uaccess.h>
#include <asm/pgtable.h>
void *kmap(struct vm_page *);
void kunmap_va(void *addr);
#define kmap_to_page(ptr) (ptr)
void *kmap_atomic_prot(struct vm_page *, pgprot_t);
void kunmap_atomic(void *);
static inline void *
kmap_atomic(struct vm_page *pg)
{
return kmap_atomic_prot(pg, PAGE_KERNEL);
}
#endif