RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-22 21:57:35 +00:00
Code Issues Activity Actions

Kernel: Introduce a new graphics subsystem

Browse source 
This new subsystem is replacing the old code that was used to
create device nodes of framebuffer devices in /dev.

This subsystem includes for now 3 roles:
1. GraphicsManagement singleton object that is used in the boot
process to enumerate and initialize display devices.
2. GraphicsDevice(s) that are used to control the display adapter.
3. FramebufferDevice(s) that are used to control the device node in
/dev.

For now, we support the Bochs display adapter and any other
generic VGA compatible adapter that was configured by the boot
loader to a known and fixed resolution.

Two improvements in the Bochs display adapter code are that
we can support native bochs-display device (this device doesn't
expose any VGA capabilities) and also that we use the MMIO region,
to configure the device, instead of setting IO ports for such tasks.
This commit is contained in:
Liav A 2021-03-05 14:23:08 +02:00 • committed by Andreas Kling
parent 8515a1c49d
commit 6a728e2d76
18 changed files with 672 additions and 428 deletions
Download patch file Download diff file Expand all files Collapse all files

20
Kernel/Graphics/RawFramebufferDevice.cpp Normal file
View file

@ -0,0 +1,20 @@
/*
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/Graphics/RawFramebufferDevice.h>
namespace Kernel {
UNMAP_AFTER_INIT NonnullRefPtr<RawFramebufferDevice> RawFramebufferDevice::create(const GraphicsDevice&, PhysicalAddress framebuffer_address, size_t pitch, size_t width, size_t height)
{
return adopt_ref(*new RawFramebufferDevice(framebuffer_address, pitch, width, height));
}
UNMAP_AFTER_INIT RawFramebufferDevice::RawFramebufferDevice(PhysicalAddress framebuffer_address, size_t pitch, size_t width, size_t height)
: FramebufferDevice(framebuffer_address, pitch, width, height)
{
}
}