/*      $OpenBSD: vmalloc.h,v 1.8 2026/03/09 23:58:03 jsg 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_VMALLOC_H
#define _LINUX_VMALLOC_H

#include <sys/param.h>
#include <sys/malloc.h>
#include <uvm/uvm_extern.h>
#include <linux/overflow.h>
#include <linux/types.h> /* for pgprot_t */

void    *vmap(struct vm_page **, unsigned int, unsigned long, pgprot_t);
void    *vmap_pfn(unsigned long *, unsigned int, pgprot_t);
void     vunmap(void *, size_t);

static inline void *
vmalloc(unsigned long size)
{
        return malloc(size, M_DRM, M_WAITOK | M_CANFAIL);
}

static inline void *
vmalloc_array(size_t n, size_t size)
{
        if (n != 0 && SIZE_MAX / n < size)
                return NULL;
        return malloc(n * size, M_DRM, M_WAITOK | M_CANFAIL);
}

static inline void *
vcalloc(size_t n, size_t size)
{
        if (n != 0 && SIZE_MAX / n < size)
                return NULL;
        return malloc(n * size, M_DRM, M_WAITOK | M_CANFAIL | M_ZERO);
}

static inline void *
vzalloc(unsigned long size)
{
        return malloc(size, M_DRM, M_WAITOK | M_CANFAIL | M_ZERO);
}

static inline void
vfree(void *objp)
{
        free(objp, M_DRM, 0);
}


#endif