mirror of
https://github.com/RGBCube/serenity
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78 lines
2.9 KiB
C++
78 lines
2.9 KiB
C++
/*
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* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Arch/x86/IO.h>
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#include <Kernel/Debug.h>
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#include <Kernel/Devices/DeviceManagement.h>
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#include <Kernel/Graphics/Console/ContiguousFramebufferConsole.h>
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#include <Kernel/Graphics/GraphicsManagement.h>
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#include <Kernel/Graphics/VGA/DisplayConnector.h>
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namespace Kernel {
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NonnullRefPtr<GenericDisplayConnector> GenericDisplayConnector::must_create_with_preset_resolution(PhysicalAddress framebuffer_address, size_t width, size_t height, size_t pitch)
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{
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auto device_or_error = DeviceManagement::try_create_device<GenericDisplayConnector>(framebuffer_address, width, height, pitch);
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VERIFY(!device_or_error.is_error());
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auto connector = device_or_error.release_value();
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MUST(connector->create_attached_framebuffer_console());
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MUST(connector->initialize_edid_for_generic_monitor());
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return connector;
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}
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GenericDisplayConnector::GenericDisplayConnector(PhysicalAddress framebuffer_address, size_t width, size_t height, size_t pitch)
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: DisplayConnector()
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, m_framebuffer_address(framebuffer_address)
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{
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m_current_mode_setting.horizontal_active = width;
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m_current_mode_setting.vertical_active = height;
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m_current_mode_setting.horizontal_stride = pitch;
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}
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ErrorOr<void> GenericDisplayConnector::create_attached_framebuffer_console()
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{
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auto width = m_current_mode_setting.horizontal_active;
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auto height = m_current_mode_setting.vertical_active;
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auto pitch = m_current_mode_setting.horizontal_stride;
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auto rounded_size = TRY(Memory::page_round_up(pitch * height));
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m_framebuffer_region = TRY(MM.allocate_kernel_region(m_framebuffer_address.page_base(), rounded_size, "Framebuffer"sv, Memory::Region::Access::ReadWrite));
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[[maybe_unused]] auto result = m_framebuffer_region->set_write_combine(true);
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m_framebuffer_data = m_framebuffer_region->vaddr().offset(m_framebuffer_address.offset_in_page()).as_ptr();
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m_framebuffer_console = Graphics::ContiguousFramebufferConsole::initialize(m_framebuffer_address, width, height, pitch);
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GraphicsManagement::the().set_console(*m_framebuffer_console);
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return {};
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}
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ErrorOr<size_t> GenericDisplayConnector::write_to_first_surface(u64 offset, UserOrKernelBuffer const& buffer, size_t length)
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{
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VERIFY(m_control_lock.is_locked());
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if (offset + length > m_framebuffer_region->size())
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return Error::from_errno(EOVERFLOW);
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TRY(buffer.read(m_framebuffer_data + offset, 0, length));
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return length;
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}
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void GenericDisplayConnector::enable_console()
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{
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VERIFY(m_control_lock.is_locked());
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VERIFY(m_framebuffer_console);
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m_framebuffer_console->enable();
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}
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void GenericDisplayConnector::disable_console()
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{
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VERIFY(m_control_lock.is_locked());
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VERIFY(m_framebuffer_console);
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m_framebuffer_console->disable();
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}
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ErrorOr<void> GenericDisplayConnector::flush_first_surface()
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{
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return Error::from_errno(ENOTSUP);
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}
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}
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