1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * This file is subject to the terms and conditions of the GNU General Public 4 * License. See the file "COPYING" in the main directory of this archive 5 * for more details. 6 * 7 * Copyright (C) 2020 Loongson Technology Co., Ltd. 8 * 9 */ 10#ifndef __ASM_DMA_H 11#define __ASM_DMA_H 12 13#define MAX_DMA_ADDRESS PAGE_OFFSET 14#define MAX_DMA32_PFN (1UL << (32 - PAGE_SHIFT)) 15 16extern int isa_dma_bridge_buggy; 17 18#endif 19