android/emulation/GoldfishDma.cpp


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#include "android/base/memory/LazyInstance.h"

#include "android/emulation/GoldfishDma.h"
#include "android/emulation/DmaMap.h"

#include "android/emulation/android_pipe_host.h"
#include "android/utils/assert.h"
#include "android/utils/debug.h"
#include "android/utils/system.h"

static void android_goldfish_dma_add_buffer(void* pipe, uint64_t guest_paddr, uint64_t sz) {
    android::DmaMap::get()->addBuffer(pipe, guest_paddr, sz);
}

static void android_goldfish_dma_remove_buffer(uint64_t guest_paddr) {
    android::DmaMap::get()->removeBuffer(guest_paddr);
}

static void* android_goldfish_dma_get_host_addr(uint64_t guest_paddr) {
    return android::DmaMap::get()->getHostAddr(guest_paddr);
}

static void android_goldfish_dma_invalidate_host_mappings() {
    android::DmaMap::get()->invalidateHostMappings();
}

static void android_goldfish_dma_unlock(uint64_t guest_paddr) {
    void* hwpipe = android::DmaMap::get()->getPipeInstance(guest_paddr);
    android_pipe_host_signal_wake(hwpipe, PIPE_WAKE_UNLOCK_DMA);
}

static void android_goldfish_dma_reset_host_mappings() {
    android::DmaMap::get()->resetHostMappings();
}

GoldfishDmaOps android_goldfish_dma_ops = {
    .add_buffer = android_goldfish_dma_add_buffer,
    .remove_buffer = android_goldfish_dma_remove_buffer,
    .get_host_addr = android_goldfish_dma_get_host_addr,
    .invalidate_host_mappings = android_goldfish_dma_invalidate_host_mappings,
    .unlock = android_goldfish_dma_unlock,
    .reset_host_mappings = android_goldfish_dma_reset_host_mappings,
};