mtrr.h revision 1.2
11.2Sriastrad/* $NetBSD: mtrr.h,v 1.2 2014/03/18 18:20:42 riastradh Exp $ */ 21.2Sriastrad 31.2Sriastrad/*- 41.2Sriastrad * Copyright (c) 2013 The NetBSD Foundation, Inc. 51.2Sriastrad * All rights reserved. 61.2Sriastrad * 71.2Sriastrad * This code is derived from software contributed to The NetBSD Foundation 81.2Sriastrad * by Taylor R. Campbell. 91.2Sriastrad * 101.2Sriastrad * Redistribution and use in source and binary forms, with or without 111.2Sriastrad * modification, are permitted provided that the following conditions 121.2Sriastrad * are met: 131.2Sriastrad * 1. Redistributions of source code must retain the above copyright 141.2Sriastrad * notice, this list of conditions and the following disclaimer. 151.2Sriastrad * 2. Redistributions in binary form must reproduce the above copyright 161.2Sriastrad * notice, this list of conditions and the following disclaimer in the 171.2Sriastrad * documentation and/or other materials provided with the distribution. 181.2Sriastrad * 191.2Sriastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 201.2Sriastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 211.2Sriastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 221.2Sriastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 231.2Sriastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 241.2Sriastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 251.2Sriastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 261.2Sriastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 271.2Sriastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 281.2Sriastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 291.2Sriastrad * POSSIBILITY OF SUCH DAMAGE. 301.2Sriastrad */ 311.2Sriastrad 321.2Sriastrad#ifndef _ASM_MTRR_H_ 331.2Sriastrad#define _ASM_MTRR_H_ 341.2Sriastrad 351.2Sriastrad#ifdef _KERNEL_OPT 361.2Sriastrad#include "opt_mtrr.h" 371.2Sriastrad#endif 381.2Sriastrad 391.2Sriastrad#include <machine/mtrr.h> 401.2Sriastrad 411.2Sriastrad#define MTRR_TYPE_WRCOMB MTRR_TYPE_WC 421.2Sriastrad 431.2Sriastradstatic inline int 441.2Sriastradmtrr_add(unsigned long base, unsigned long size, int type, 451.2Sriastrad bool increment __unused) 461.2Sriastrad{ 471.2Sriastrad#ifdef MTRR 481.2Sriastrad struct mtrr mtrr; 491.2Sriastrad int n = 1; 501.2Sriastrad 511.2Sriastrad mtrr.base = base; 521.2Sriastrad mtrr.len = size; 531.2Sriastrad mtrr.type = type; 541.2Sriastrad mtrr.flags = MTRR_VALID; 551.2Sriastrad 561.2Sriastrad /* XXX errno NetBSD->Linux */ 571.2Sriastrad return -mtrr_set(&mtrr, &n, NULL, MTRR_GETSET_KERNEL); 581.2Sriastrad#else 591.2Sriastrad return 0; 601.2Sriastrad#endif 611.2Sriastrad} 621.2Sriastrad 631.2Sriastradstatic inline int 641.2Sriastradmtrr_del(int handle __unused, unsigned long base, unsigned long size) 651.2Sriastrad{ 661.2Sriastrad#ifdef MTRR 671.2Sriastrad struct mtrr mtrr; 681.2Sriastrad int n = 1; 691.2Sriastrad 701.2Sriastrad mtrr.base = base; 711.2Sriastrad mtrr.len = size; 721.2Sriastrad mtrr.type = 0; 731.2Sriastrad mtrr.flags = 0; /* not MTRR_VALID */ 741.2Sriastrad 751.2Sriastrad /* XXX errno NetBSD->Linux */ 761.2Sriastrad return -mtrr_set(&mtrr, &n, NULL, MTRR_GETSET_KERNEL); 771.2Sriastrad#else 781.2Sriastrad return 0; 791.2Sriastrad#endif 801.2Sriastrad} 811.2Sriastrad 821.2Sriastrad#endif /* _ASM_MTRR_H_ */ 83