mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-01-08 04:15:23 +03:00
ac7ce12123
This was a premature optimization from the early days of SerenityOS. The eternal heap was a simple bump pointer allocator over a static byte array. My original idea was to avoid heap fragmentation and improve data locality, but both ideas were rooted in cargo culting, not data. We would reserve 4 MiB at boot and only ended up using ~256 KiB, wasting the rest. This patch replaces all kmalloc_eternal() usage by regular kmalloc().
56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
/*
|
|
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Types.h>
|
|
#include <Kernel/Bus/PCI/Device.h>
|
|
#include <Kernel/Graphics/Console/Console.h>
|
|
#include <Kernel/Graphics/FramebufferDevice.h>
|
|
#include <Kernel/Graphics/GenericGraphicsAdapter.h>
|
|
#include <Kernel/PhysicalAddress.h>
|
|
|
|
namespace Kernel {
|
|
|
|
class VGACompatibleAdapter : public GenericGraphicsAdapter
|
|
, public PCI::Device {
|
|
public:
|
|
static NonnullRefPtr<VGACompatibleAdapter> initialize_with_preset_resolution(PCI::DeviceIdentifier const&, PhysicalAddress, size_t framebuffer_width, size_t framebuffer_height, size_t framebuffer_pitch);
|
|
static NonnullRefPtr<VGACompatibleAdapter> initialize(PCI::DeviceIdentifier const&);
|
|
|
|
virtual bool framebuffer_devices_initialized() const override { return !m_framebuffer_device.is_null(); }
|
|
|
|
virtual bool modesetting_capable() const override { return false; }
|
|
virtual bool double_framebuffering_capable() const override { return false; }
|
|
|
|
virtual bool vga_compatible() const override final { return true; }
|
|
|
|
virtual bool try_to_set_resolution(size_t output_port_index, size_t width, size_t height) override;
|
|
virtual bool set_y_offset(size_t output_port_index, size_t y) override;
|
|
|
|
protected:
|
|
explicit VGACompatibleAdapter(PCI::Address);
|
|
|
|
private:
|
|
VGACompatibleAdapter(PCI::Address, PhysicalAddress, size_t framebuffer_width, size_t framebuffer_height, size_t framebuffer_pitch);
|
|
|
|
// ^GenericGraphicsAdapter
|
|
virtual void initialize_framebuffer_devices() override;
|
|
|
|
virtual void enable_consoles() override;
|
|
virtual void disable_consoles() override;
|
|
|
|
protected:
|
|
PhysicalAddress m_framebuffer_address;
|
|
size_t m_framebuffer_width { 0 };
|
|
size_t m_framebuffer_height { 0 };
|
|
size_t m_framebuffer_pitch { 0 };
|
|
|
|
RefPtr<FramebufferDevice> m_framebuffer_device;
|
|
RefPtr<Graphics::Console> m_framebuffer_console;
|
|
};
|
|
}
|