2020-01-18 11:38:21 +03:00
|
|
|
/*
|
2021-03-05 15:23:08 +03:00
|
|
|
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
|
2020-01-18 11:38:21 +03:00
|
|
|
*
|
2021-04-22 11:24:48 +03:00
|
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
2020-01-18 11:38:21 +03:00
|
|
|
*/
|
|
|
|
|
2019-08-18 07:54:52 +03:00
|
|
|
#pragma once
|
|
|
|
|
2021-04-16 22:58:51 +03:00
|
|
|
#include <AK/NonnullOwnPtr.h>
|
2019-09-06 16:34:26 +03:00
|
|
|
#include <AK/String.h>
|
2019-08-18 07:54:52 +03:00
|
|
|
#include <AK/Types.h>
|
|
|
|
#include <Kernel/Devices/BlockDevice.h>
|
2021-03-05 15:23:08 +03:00
|
|
|
#include <Kernel/Graphics/GraphicsDevice.h>
|
2020-05-16 13:00:04 +03:00
|
|
|
#include <Kernel/PhysicalAddress.h>
|
2021-04-16 22:58:51 +03:00
|
|
|
#include <Kernel/SpinLock.h>
|
|
|
|
#include <Kernel/VM/AnonymousVMObject.h>
|
2019-08-18 07:54:52 +03:00
|
|
|
|
2020-02-16 03:27:42 +03:00
|
|
|
namespace Kernel {
|
|
|
|
|
2021-03-05 15:23:08 +03:00
|
|
|
class FramebufferDevice : public BlockDevice {
|
2019-08-18 07:54:52 +03:00
|
|
|
AK_MAKE_ETERNAL
|
|
|
|
public:
|
2020-05-23 14:17:58 +03:00
|
|
|
virtual int ioctl(FileDescription&, unsigned request, FlatPtr arg) override;
|
2021-03-19 00:57:25 +03:00
|
|
|
virtual KResultOr<Region*> mmap(Process&, FileDescription&, const Range&, u64 offset, int prot, bool shared) override;
|
2019-08-18 07:54:52 +03:00
|
|
|
|
2020-12-25 20:01:19 +03:00
|
|
|
// ^Device
|
|
|
|
virtual mode_t required_mode() const override { return 0660; }
|
2021-01-21 20:49:56 +03:00
|
|
|
virtual String device_name() const override;
|
2020-12-25 20:01:19 +03:00
|
|
|
|
2021-05-21 06:53:31 +03:00
|
|
|
virtual void deactivate_writes();
|
2021-04-16 22:58:51 +03:00
|
|
|
virtual void activate_writes();
|
2021-03-05 15:23:08 +03:00
|
|
|
virtual size_t framebuffer_size_in_bytes() const { return m_framebuffer_pitch * m_framebuffer_height; }
|
|
|
|
|
|
|
|
virtual ~FramebufferDevice() {};
|
2021-04-16 22:58:51 +03:00
|
|
|
void initialize();
|
2021-03-05 15:23:08 +03:00
|
|
|
|
|
|
|
protected:
|
|
|
|
virtual bool set_resolution(size_t framebuffer_width, size_t framebuffer_height, size_t framebuffer_pitch);
|
|
|
|
|
|
|
|
FramebufferDevice(PhysicalAddress, size_t, size_t, size_t);
|
|
|
|
|
|
|
|
virtual bool can_read(const FileDescription&, size_t) const override final { return true; }
|
|
|
|
virtual bool can_write(const FileDescription&, size_t) const override final { return true; }
|
|
|
|
virtual void start_request(AsyncBlockDeviceRequest& request) override final { request.complete(AsyncDeviceRequest::Failure); }
|
2021-03-17 15:18:51 +03:00
|
|
|
virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override { return -EINVAL; }
|
|
|
|
virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return -EINVAL; }
|
2019-08-18 07:54:52 +03:00
|
|
|
|
2021-03-05 15:23:08 +03:00
|
|
|
protected:
|
2019-08-18 07:54:52 +03:00
|
|
|
PhysicalAddress m_framebuffer_address;
|
2020-04-29 10:35:19 +03:00
|
|
|
size_t m_framebuffer_pitch { 0 };
|
|
|
|
size_t m_framebuffer_width { 0 };
|
|
|
|
size_t m_framebuffer_height { 0 };
|
2021-04-16 22:58:51 +03:00
|
|
|
|
|
|
|
private:
|
|
|
|
SpinLock<u8> m_activation_lock;
|
|
|
|
|
|
|
|
RefPtr<AnonymousVMObject> m_real_framebuffer_vmobject;
|
|
|
|
RefPtr<AnonymousVMObject> m_swapped_framebuffer_vmobject;
|
|
|
|
OwnPtr<Region> m_real_framebuffer_region;
|
|
|
|
OwnPtr<Region> m_swapped_framebuffer_region;
|
|
|
|
|
2021-05-20 21:28:18 +03:00
|
|
|
bool m_graphical_writes_enabled { true };
|
|
|
|
|
2021-04-16 22:58:51 +03:00
|
|
|
RefPtr<AnonymousVMObject> m_userspace_real_framebuffer_vmobject;
|
|
|
|
Region* m_userspace_framebuffer_region { nullptr };
|
2019-08-18 07:54:52 +03:00
|
|
|
};
|
2020-02-16 03:27:42 +03:00
|
|
|
|
|
|
|
}
|