/*-
 *Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *    Rickard E. (Rik) Faith <faith@valinux.com>
 *    Gareth Hughes <gareth@valinux.com>
 *
 */

/** @file drm_memory.c
 * Wrappers for MTRR management support.
 */

#include <sys/types.h>
#include <lib/libkern/libkern.h>
#include <sys/memrange.h>

#if !defined(__amd64__) && !defined(__i386__)
#define DRM_NO_MTRR     1
#endif

int
drm_mtrr_add(unsigned long offset, size_t size, int flags)
{
#ifndef DRM_NO_MTRR
        int act;
        struct mem_range_desc mrdesc;

        mrdesc.mr_base = offset;
        mrdesc.mr_len = size;
        mrdesc.mr_flags = flags;
        act = MEMRANGE_SET_UPDATE;
        strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner));
        return mem_range_attr_set(&mrdesc, &act);
#else
        return 0;
#endif
}

int
drm_mtrr_del(int handle, unsigned long offset, size_t size, int flags)
{
#ifndef DRM_NO_MTRR
        int act;
        struct mem_range_desc mrdesc;

        mrdesc.mr_base = offset;
        mrdesc.mr_len = size;
        mrdesc.mr_flags = flags;
        act = MEMRANGE_SET_REMOVE;
        strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner));
        return mem_range_attr_set(&mrdesc, &act);
#else
        return 0;
#endif
}