FramebufferDevice.h 2.9 KB

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  1. /*
  2. * Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
  3. *
  4. * SPDX-License-Identifier: BSD-2-Clause
  5. */
  6. #pragma once
  7. #include <AK/NonnullOwnPtr.h>
  8. #include <AK/Types.h>
  9. #include <Kernel/Graphics/GenericFramebufferDevice.h>
  10. #include <Kernel/Graphics/GenericGraphicsAdapter.h>
  11. #include <Kernel/Locking/Spinlock.h>
  12. #include <Kernel/Memory/AnonymousVMObject.h>
  13. #include <Kernel/PhysicalAddress.h>
  14. namespace Kernel {
  15. class FramebufferDevice final : public GenericFramebufferDevice {
  16. friend class DeviceManagement;
  17. public:
  18. static NonnullRefPtr<FramebufferDevice> create(const GenericGraphicsAdapter&, PhysicalAddress, size_t, size_t, size_t);
  19. virtual ErrorOr<Memory::Region*> mmap(Process&, OpenFileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
  20. virtual void deactivate_writes() override;
  21. virtual void activate_writes() override;
  22. virtual ErrorOr<void> try_to_initialize() override;
  23. virtual bool multihead_support() const override { return false; }
  24. virtual bool flushing_support() const override { return false; }
  25. virtual bool partial_flushing_support() const override { return false; }
  26. virtual size_t heads_count() const override { return 1; }
  27. virtual ErrorOr<size_t> buffer_length(size_t head) const override;
  28. virtual ErrorOr<size_t> pitch(size_t head) const override;
  29. virtual ErrorOr<size_t> height(size_t head) const override;
  30. virtual ErrorOr<size_t> width(size_t head) const override;
  31. virtual ErrorOr<size_t> vertical_offset(size_t head) const override;
  32. virtual ErrorOr<bool> vertical_offsetted(size_t head) const override;
  33. virtual ErrorOr<ByteBuffer> get_edid(size_t head) const override;
  34. void enable_write_combine(bool write_combine) { m_write_combine = write_combine; }
  35. private:
  36. virtual ErrorOr<void> set_head_resolution(size_t head, size_t width, size_t height, size_t pitch) override;
  37. virtual ErrorOr<void> set_head_buffer(size_t head, bool second_buffer) override;
  38. virtual ErrorOr<void> flush_head_buffer(size_t head) override;
  39. virtual ErrorOr<void> flush_rectangle(size_t head, FBRect const&) override;
  40. FramebufferDevice(const GenericGraphicsAdapter&, PhysicalAddress, size_t, size_t, size_t);
  41. PhysicalAddress m_framebuffer_address;
  42. size_t m_framebuffer_pitch { 0 };
  43. size_t m_framebuffer_width { 0 };
  44. size_t m_framebuffer_height { 0 };
  45. Spinlock m_activation_lock;
  46. mutable Spinlock m_buffer_offset_lock;
  47. RefPtr<Memory::AnonymousVMObject> m_real_framebuffer_vmobject;
  48. RefPtr<Memory::AnonymousVMObject> m_swapped_framebuffer_vmobject;
  49. OwnPtr<Memory::Region> m_real_framebuffer_region;
  50. OwnPtr<Memory::Region> m_swapped_framebuffer_region;
  51. bool m_graphical_writes_enabled { true };
  52. bool m_write_combine { true };
  53. RefPtr<Memory::AnonymousVMObject> m_userspace_real_framebuffer_vmobject;
  54. Memory::Region* m_userspace_framebuffer_region { nullptr };
  55. size_t m_y_offset { 0 };
  56. };
  57. }