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73 lines
2.1 KiB
73 lines
2.1 KiB
// Copyright 2019 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <memory>
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#include "base/Stream.h"
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namespace android {
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namespace emulation {
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// Protocol:
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// Guest open()'s the device, kernel gets internal handle
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// first ioctl is all 0 fields except for metadata,
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// which establishes what kind of thing we want to run,
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// enumerated here.
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// From there, it's all up to the individual device types.
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enum AddressSpaceDeviceType {
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// Covers renderControl, opengles, and vulkan
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Graphics = 0,
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// (audio/video codec devices)
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Media = 1,
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Sensors = 2,
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Power = 3,
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// TODO: All other services currently using goldfish pipe
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GenericPipe = 4,
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HostMemoryAllocator = 5,
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SharedSlotsHostMemoryAllocator = 6,
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VirtioGpuGraphics = 10,
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};
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struct AddressSpaceDevicePingInfo {
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uint64_t phys_addr;
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uint64_t size;
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uint64_t metadata;
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uint64_t wait_phys_addr;
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uint32_t wait_flags;
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uint32_t direction;
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};
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class AddressSpaceDeviceContext {
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public:
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virtual ~AddressSpaceDeviceContext() {}
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virtual void perform(AddressSpaceDevicePingInfo *info) = 0;
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virtual AddressSpaceDeviceType getDeviceType() const = 0;
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virtual void save(base::Stream* stream) const = 0;
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virtual bool load(base::Stream* stream) = 0;
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virtual void preSave() const { }
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virtual void postSave() const { }
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};
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struct AddressSpaceContextDescription {
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AddressSpaceDevicePingInfo* pingInfo = nullptr;
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uint64_t pingInfoGpa = 0; // for snapshots
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std::unique_ptr<AddressSpaceDeviceContext> device_context;
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};
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} // namespace emulation
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} // namespace android
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