1 /* 2 * DMA-related memory allocation utility functions. 3 * 4 * Copyright (C) 2023, 2024 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #pragma once 23 24 #include <l4/re/c/dma_space.h> 25 #include <l4/sys/types.h> 26 27 struct dma_region 28 { 29 unsigned int size; 30 unsigned int align; 31 l4_addr_t vaddr; 32 l4re_dma_space_dma_addr_t paddr; 33 l4_cap_idx_t mem; 34 }; 35 36 EXTERN_C_BEGIN 37 38 long get_dma_region(unsigned long size, int align, struct dma_region *region); 39 40 EXTERN_C_END