1 /* 2 * Copyright (C) 2016 Google, Inc. 3 * 4 * This software is licensed under the terms of the GNU General Public 5 * License version 2, as published by the Free Software Foundation, and 6 * may be copied, distributed, and modified under those terms. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 */ 14 15 #ifndef ANDROID_INCLUDE_HARDWARE_GOLDFISH_DMA_H 16 #define ANDROID_INCLUDE_HARDWARE_GOLDFISH_DMA_H 17 18 #include <inttypes.h> 19 20 // userspace interface 21 struct goldfish_dma_context { 22 uint64_t mapped_addr; 23 uint32_t size; 24 int32_t fd; 25 }; 26 27 int goldfish_dma_create_region(uint32_t sz, struct goldfish_dma_context* res); 28 29 void* goldfish_dma_map(struct goldfish_dma_context* cxt); 30 int goldfish_dma_unmap(struct goldfish_dma_context* cxt); 31 32 void goldfish_dma_write(struct goldfish_dma_context* cxt, 33 const void* to_write, 34 uint32_t sz); 35 36 void goldfish_dma_free(goldfish_dma_context* cxt); 37 uint64_t goldfish_dma_guest_paddr(const struct goldfish_dma_context* cxt); 38 39 #endif 40