mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 03:42:44 +00:00
9ee098b119
Like the HID, Audio and Storage subsystem, the Graphics subsystem (which
handles GPUs technically) exposes unix device files (typically in /dev).
To ensure consistency across the repository, move all related files to a
new directory under Kernel/Devices called "GPU".
Also remove the redundant "GPU" word from the VirtIO driver directory,
and the word "Graphics" from GraphicsManagement.{h,cpp} filenames.
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
/*
|
|
* Copyright (c) 2022, the SerenityOS developers.
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/Devices/GPU/Console/BootFramebufferConsole.h>
|
|
#include <Kernel/Locking/Spinlock.h>
|
|
#include <Kernel/Memory/MemoryManager.h>
|
|
|
|
namespace Kernel::Graphics {
|
|
|
|
BootFramebufferConsole::BootFramebufferConsole(PhysicalAddress framebuffer_addr, size_t width, size_t height, size_t pitch)
|
|
: GenericFramebufferConsoleImpl(width, height, pitch)
|
|
{
|
|
// NOTE: We're very early in the boot process, memory allocations shouldn't really fail
|
|
auto framebuffer_end = Memory::page_round_up(framebuffer_addr.offset(height * pitch).get()).release_value();
|
|
m_framebuffer = MM.allocate_kernel_region(framebuffer_addr.page_base(), framebuffer_end - framebuffer_addr.page_base().get(), "Boot Framebuffer"sv, Memory::Region::Access::ReadWrite).release_value();
|
|
|
|
[[maybe_unused]] auto result = m_framebuffer->set_write_combine(true);
|
|
m_framebuffer_data = m_framebuffer->vaddr().offset(framebuffer_addr.offset_in_page()).as_ptr();
|
|
memset(m_framebuffer_data, 0, height * pitch);
|
|
}
|
|
|
|
void BootFramebufferConsole::clear(size_t x, size_t y, size_t length)
|
|
{
|
|
SpinlockLocker lock(m_lock);
|
|
if (m_framebuffer_data)
|
|
GenericFramebufferConsoleImpl::clear(x, y, length);
|
|
}
|
|
|
|
void BootFramebufferConsole::clear_glyph(size_t x, size_t y)
|
|
{
|
|
|
|
VERIFY(m_lock.is_locked());
|
|
GenericFramebufferConsoleImpl::clear_glyph(x, y);
|
|
}
|
|
|
|
void BootFramebufferConsole::enable()
|
|
{
|
|
// Once disabled, ignore requests to re-enable
|
|
}
|
|
|
|
void BootFramebufferConsole::disable()
|
|
{
|
|
SpinlockLocker lock(m_lock);
|
|
GenericFramebufferConsoleImpl::disable();
|
|
m_framebuffer = nullptr;
|
|
m_framebuffer_data = nullptr;
|
|
}
|
|
|
|
void BootFramebufferConsole::write(size_t x, size_t y, char ch, Color background, Color foreground, bool critical)
|
|
{
|
|
SpinlockLocker lock(m_lock);
|
|
if (m_framebuffer_data)
|
|
GenericFramebufferConsoleImpl::write(x, y, ch, background, foreground, critical);
|
|
}
|
|
|
|
void BootFramebufferConsole::set_cursor(size_t x, size_t y)
|
|
{
|
|
// Note: To ensure we don't trigger a deadlock, let's assert in
|
|
// case we already locked the spinlock, so we know there's a bug
|
|
// in the call path.
|
|
VERIFY(!m_lock.is_locked());
|
|
SpinlockLocker lock(m_lock);
|
|
hide_cursor();
|
|
m_x = x;
|
|
m_y = y;
|
|
show_cursor();
|
|
}
|
|
|
|
void BootFramebufferConsole::hide_cursor()
|
|
{
|
|
VERIFY(m_lock.is_locked());
|
|
GenericFramebufferConsoleImpl::hide_cursor();
|
|
}
|
|
|
|
void BootFramebufferConsole::show_cursor()
|
|
{
|
|
VERIFY(m_lock.is_locked());
|
|
GenericFramebufferConsoleImpl::show_cursor();
|
|
}
|
|
|
|
u8* BootFramebufferConsole::framebuffer_data()
|
|
{
|
|
VERIFY(m_lock.is_locked());
|
|
VERIFY(m_framebuffer_data);
|
|
return m_framebuffer_data;
|
|
}
|
|
|
|
}
|