mirror of
https://github.com/RGBCube/serenity
synced 2025-07-27 20:17:44 +00:00
Kernel: Add VirtIOGPU graphics device
This commit is contained in:
parent
b569b2df35
commit
b9ad6058aa
21 changed files with 1050 additions and 13 deletions
45
Kernel/Graphics/VirtIOGPU/VirtIOFrameBufferDevice.h
Normal file
45
Kernel/Graphics/VirtIOGPU/VirtIOFrameBufferDevice.h
Normal file
|
@ -0,0 +1,45 @@
|
|||
/*
|
||||
* Copyright (c) 2021, Sahan Fernando <sahan.h.fernando@gmail.com>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <Kernel/Devices/BlockDevice.h>
|
||||
#include <Kernel/Graphics/VirtIOGPU/VirtIOGPU.h>
|
||||
#include <Kernel/VirtIO/VirtIO.h>
|
||||
#include <Kernel/VirtIO/VirtIOQueue.h>
|
||||
|
||||
namespace Kernel::Graphics {
|
||||
|
||||
class VirtIOFrameBufferDevice final : public BlockDevice {
|
||||
public:
|
||||
VirtIOFrameBufferDevice(RefPtr<VirtIOGPU> virtio_gpu);
|
||||
virtual ~VirtIOFrameBufferDevice() override;
|
||||
|
||||
virtual void deactivate_writes();
|
||||
virtual void activate_writes();
|
||||
|
||||
private:
|
||||
virtual const char* class_name() const override { return "VirtIOFrameBuffer"; }
|
||||
|
||||
virtual int ioctl(FileDescription&, unsigned request, FlatPtr arg) override;
|
||||
virtual KResultOr<Region*> mmap(Process&, FileDescription&, const Range&, u64 offset, int prot, bool shared) override;
|
||||
virtual bool can_read(const FileDescription&, size_t) const override { return true; }
|
||||
virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override { return EINVAL; }
|
||||
virtual bool can_write(const FileDescription&, size_t) const override { return true; }
|
||||
virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EINVAL; };
|
||||
virtual void start_request(AsyncBlockDeviceRequest& request) override { request.complete(AsyncDeviceRequest::Failure); }
|
||||
|
||||
virtual mode_t required_mode() const override { return 0666; }
|
||||
virtual String device_name() const override { return String::formatted("fb{}", minor()); }
|
||||
|
||||
RefPtr<VirtIOGPU> m_gpu;
|
||||
RefPtr<VMObject> m_framebuffer_sink_vmobject;
|
||||
bool m_are_writes_active { true };
|
||||
// FIXME: This needs to be cleaned up if the WindowServer exits while we are in a tty
|
||||
WeakPtr<Region> m_userspace_mmap_region;
|
||||
};
|
||||
|
||||
}
|
Loading…
Add table
Add a link
Reference in a new issue