1 // Copyright 2016 The Android Open Source Project 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 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