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Kernel/Graphics: Use DisplayConnector design for the Bochs driver
This commit is contained in:
Liav A
Andreas Kling
parent
6d7e2596e0
commit
e9a74cbefb
8 changed files with 450 additions and 226 deletions
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@ -2,8 +2,8 @@
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MainScreen=0
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[Screen0]
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Mode=Device
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Device=/dev/fb0
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Mode=DisplayConnectorDevice
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Device=/dev/gpu/connector0
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Left=0
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Top=0
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Width=1024
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@ -74,7 +74,9 @@ set(KERNEL_SOURCES
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Devices/HID/PS2MouseDevice.cpp
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Devices/HID/VMWareMouseDevice.cpp
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GlobalProcessExposed.cpp
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Graphics/Bochs/DisplayConnector.cpp
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Graphics/Bochs/GraphicsAdapter.cpp
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Graphics/Bochs/QEMUDisplayConnector.cpp
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Graphics/Console/BootFramebufferConsole.cpp
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Graphics/Console/GenericFramebufferConsole.cpp
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Graphics/Console/ContiguousFramebufferConsole.cpp
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161
Kernel/Graphics/Bochs/DisplayConnector.cpp
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161
Kernel/Graphics/Bochs/DisplayConnector.cpp
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@ -0,0 +1,161 @@
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/*
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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/Bochs/Definitions.h>
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#include <Kernel/Graphics/Bochs/DisplayConnector.h>
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#include <Kernel/Graphics/Console/ContiguousFramebufferConsole.h>
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#include <Kernel/Graphics/GraphicsManagement.h>
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namespace Kernel {
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NonnullRefPtr<BochsDisplayConnector> BochsDisplayConnector::must_create(PhysicalAddress framebuffer_address)
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{
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auto device_or_error = DeviceManagement::try_create_device<BochsDisplayConnector>(framebuffer_address);
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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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BochsDisplayConnector::BochsDisplayConnector(PhysicalAddress framebuffer_address)
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: DisplayConnector()
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, m_framebuffer_address(framebuffer_address)
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{
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}
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ErrorOr<void> BochsDisplayConnector::create_attached_framebuffer_console()
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{
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auto rounded_size = TRY(Memory::page_round_up(1024 * sizeof(u32) * 768 * 2));
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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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// We assume safe resolution is 1024x768x32
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m_framebuffer_console = Graphics::ContiguousFramebufferConsole::initialize(m_framebuffer_address, 1024, 768, 1024 * sizeof(u32));
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GraphicsManagement::the().set_console(*m_framebuffer_console);
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return {};
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}
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static void set_register_with_io(u16 index, u16 data)
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{
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IO::out16(VBE_DISPI_IOPORT_INDEX, index);
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IO::out16(VBE_DISPI_IOPORT_DATA, data);
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}
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static u16 get_register_with_io(u16 index)
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{
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IO::out16(VBE_DISPI_IOPORT_INDEX, index);
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return IO::in16(VBE_DISPI_IOPORT_DATA);
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}
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BochsDisplayConnector::IndexID BochsDisplayConnector::index_id() const
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{
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return get_register_with_io(0);
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}
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ErrorOr<size_t> BochsDisplayConnector::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 BochsDisplayConnector::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 BochsDisplayConnector::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> BochsDisplayConnector::flush_first_surface()
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{
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return Error::from_errno(ENOTSUP);
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}
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ErrorOr<void> BochsDisplayConnector::set_safe_mode_setting()
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{
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DisplayConnector::ModeSetting safe_mode_set {
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.horizontal_stride = 1024 * sizeof(u32),
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.pixel_clock_in_khz = 0, // Note: There's no pixel clock in paravirtualized hardware
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.horizontal_active = 1024,
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.horizontal_front_porch_pixels = 0, // Note: There's no horizontal_front_porch_pixels in paravirtualized hardware
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.horizontal_sync_time_pixels = 0, // Note: There's no horizontal_sync_time_pixels in paravirtualized hardware
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.horizontal_blank_pixels = 0, // Note: There's no horizontal_blank_pixels in paravirtualized hardware
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.vertical_active = 768,
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.vertical_front_porch_lines = 0, // Note: There's no vertical_front_porch_lines in paravirtualized hardware
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.vertical_sync_time_lines = 0, // Note: There's no vertical_sync_time_lines in paravirtualized hardware
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.vertical_blank_lines = 0, // Note: There's no vertical_blank_lines in paravirtualized hardware
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.horizontal_offset = 0,
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.vertical_offset = 0,
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};
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return set_mode_setting(safe_mode_set);
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}
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ErrorOr<void> BochsDisplayConnector::set_mode_setting(ModeSetting const& mode_setting)
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{
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SpinlockLocker locker(m_modeset_lock);
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size_t width = mode_setting.horizontal_active;
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size_t height = mode_setting.vertical_active;
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dbgln_if(BXVGA_DEBUG, "BochsDisplayConnector resolution registers set to - {}x{}", width, height);
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set_register_with_io(to_underlying(BochsDISPIRegisters::ENABLE), 0);
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set_register_with_io(to_underlying(BochsDISPIRegisters::XRES), (u16)width);
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set_register_with_io(to_underlying(BochsDISPIRegisters::YRES), (u16)height);
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set_register_with_io(to_underlying(BochsDISPIRegisters::VIRT_WIDTH), (u16)width);
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set_register_with_io(to_underlying(BochsDISPIRegisters::VIRT_HEIGHT), (u16)height * 2);
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set_register_with_io(to_underlying(BochsDISPIRegisters::BPP), 32);
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set_register_with_io(to_underlying(BochsDISPIRegisters::ENABLE), to_underlying(BochsFramebufferSettings::Enabled) | to_underlying(BochsFramebufferSettings::LinearFramebuffer));
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set_register_with_io(to_underlying(BochsDISPIRegisters::BANK), 0);
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if ((u16)width != get_register_with_io(to_underlying(BochsDISPIRegisters::XRES)) || (u16)height != get_register_with_io(to_underlying(BochsDISPIRegisters::YRES))) {
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return Error::from_errno(ENOTIMPL);
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}
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auto current_horizontal_active = get_register_with_io(to_underlying(BochsDISPIRegisters::XRES));
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auto current_vertical_active = get_register_with_io(to_underlying(BochsDISPIRegisters::YRES));
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DisplayConnector::ModeSetting mode_set {
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.horizontal_stride = current_horizontal_active * sizeof(u32),
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.pixel_clock_in_khz = 0, // Note: There's no pixel clock in paravirtualized hardware
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.horizontal_active = current_horizontal_active,
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.horizontal_front_porch_pixels = 0, // Note: There's no horizontal_front_porch_pixels in paravirtualized hardware
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.horizontal_sync_time_pixels = 0, // Note: There's no horizontal_sync_time_pixels in paravirtualized hardware
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.horizontal_blank_pixels = 0, // Note: There's no horizontal_blank_pixels in paravirtualized hardware
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.vertical_active = current_vertical_active,
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.vertical_front_porch_lines = 0, // Note: There's no vertical_front_porch_lines in paravirtualized hardware
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.vertical_sync_time_lines = 0, // Note: There's no vertical_sync_time_lines in paravirtualized hardware
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.vertical_blank_lines = 0, // Note: There's no vertical_blank_lines in paravirtualized hardware
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.horizontal_offset = 0,
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.vertical_offset = 0,
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};
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m_current_mode_setting = mode_set;
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return {};
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}
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ErrorOr<void> BochsDisplayConnector::set_y_offset(size_t)
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{
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// Note: Although when using this device on QEMU we can actually set the horizontal and vertical offsets
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// with IO ports, this class is meant to be used for plain old Bochs graphics which might not support
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// this feature at all.
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return Error::from_errno(ENOTIMPL);
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}
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ErrorOr<void> BochsDisplayConnector::unblank()
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{
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return Error::from_errno(ENOTIMPL);
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}
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}
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59
Kernel/Graphics/Bochs/DisplayConnector.h
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59
Kernel/Graphics/Bochs/DisplayConnector.h
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@ -0,0 +1,59 @@
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/*
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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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#pragma once
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#include <AK/RefPtr.h>
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#include <AK/Try.h>
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#include <Kernel/Graphics/Bochs/Definitions.h>
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#include <Kernel/Graphics/Console/GenericFramebufferConsole.h>
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#include <Kernel/Graphics/DisplayConnector.h>
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#include <Kernel/Locking/Spinlock.h>
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#include <Kernel/Memory/TypedMapping.h>
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namespace Kernel {
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class BochsDisplayConnector
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: public DisplayConnector {
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friend class BochsGraphicsAdapter;
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friend class DeviceManagement;
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public:
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TYPEDEF_DISTINCT_ORDERED_ID(u16, IndexID);
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static NonnullRefPtr<BochsDisplayConnector> must_create(PhysicalAddress framebuffer_address);
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virtual IndexID index_id() const;
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protected:
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ErrorOr<void> create_attached_framebuffer_console();
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explicit BochsDisplayConnector(PhysicalAddress framebuffer_address);
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virtual bool mutable_mode_setting_capable() const override final { return true; }
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virtual bool double_framebuffering_capable() const override { return false; }
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virtual ErrorOr<void> set_mode_setting(ModeSetting const&) override;
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virtual ErrorOr<void> set_safe_mode_setting() override final;
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virtual ErrorOr<void> set_y_offset(size_t y) override;
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virtual ErrorOr<void> unblank() override;
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virtual bool partial_flush_support() const override final { return false; }
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virtual bool flush_support() const override final { return false; }
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// Note: Paravirtualized hardware doesn't require a defined refresh rate for modesetting.
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virtual bool refresh_rate_support() const override final { return false; }
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virtual ErrorOr<size_t> write_to_first_surface(u64 offset, UserOrKernelBuffer const&, size_t length) override final;
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virtual ErrorOr<void> flush_first_surface() override final;
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virtual void enable_console() override final;
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virtual void disable_console() override final;
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const PhysicalAddress m_framebuffer_address;
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RefPtr<Graphics::GenericFramebufferConsole> m_framebuffer_console;
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OwnPtr<Memory::Region> m_framebuffer_region;
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u8* m_framebuffer_data {};
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};
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}
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@ -6,11 +6,15 @@
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#include <AK/Atomic.h>
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#include <AK/Checked.h>
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#include <AK/Try.h>
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#include <Kernel/Arch/x86/IO.h>
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#include <Kernel/Bus/PCI/API.h>
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#include <Kernel/Bus/PCI/IDs.h>
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#include <Kernel/Debug.h>
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#include <Kernel/Graphics/Bochs/Definitions.h>
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#include <Kernel/Graphics/Bochs/DisplayConnector.h>
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#include <Kernel/Graphics/Bochs/GraphicsAdapter.h>
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#include <Kernel/Graphics/Bochs/QEMUDisplayConnector.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/Memory/TypedMapping.h>
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@ -22,68 +26,44 @@ UNMAP_AFTER_INIT NonnullRefPtr<BochsGraphicsAdapter> BochsGraphicsAdapter::initi
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{
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PCI::HardwareID id = pci_device_identifier.hardware_id();
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VERIFY((id.vendor_id == PCI::VendorID::QEMUOld && id.device_id == 0x1111) || (id.vendor_id == PCI::VendorID::VirtualBox && id.device_id == 0xbeef));
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return adopt_ref(*new BochsGraphicsAdapter(pci_device_identifier));
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}
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void BochsGraphicsAdapter::set_framebuffer_to_big_endian_format()
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{
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dbgln_if(BXVGA_DEBUG, "BochsGraphicsAdapter set_framebuffer_to_big_endian_format");
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full_memory_barrier();
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if (m_registers->extension_regs.region_size == 0xFFFFFFFF || m_registers->extension_regs.region_size == 0)
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return;
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full_memory_barrier();
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m_registers->extension_regs.framebuffer_byteorder = BOCHS_DISPLAY_BIG_ENDIAN;
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full_memory_barrier();
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}
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void BochsGraphicsAdapter::set_framebuffer_to_little_endian_format()
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{
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dbgln_if(BXVGA_DEBUG, "BochsGraphicsAdapter set_framebuffer_to_little_endian_format");
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full_memory_barrier();
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if (m_registers->extension_regs.region_size == 0xFFFFFFFF || m_registers->extension_regs.region_size == 0)
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return;
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full_memory_barrier();
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m_registers->extension_regs.framebuffer_byteorder = BOCHS_DISPLAY_LITTLE_ENDIAN;
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full_memory_barrier();
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auto adapter = adopt_ref(*new BochsGraphicsAdapter(pci_device_identifier));
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MUST(adapter->initialize_adapter(pci_device_identifier));
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return adapter;
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}
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UNMAP_AFTER_INIT BochsGraphicsAdapter::BochsGraphicsAdapter(PCI::DeviceIdentifier const& pci_device_identifier)
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: PCI::Device(pci_device_identifier.address())
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, m_mmio_registers(PCI::get_BAR2(pci_device_identifier.address()) & 0xfffffff0)
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, m_registers(Memory::map_typed_writable<BochsDisplayMMIORegisters volatile>(m_mmio_registers).release_value_but_fixme_should_propagate_errors())
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{
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// We assume safe resolution is 1024x768x32
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m_framebuffer_console = Graphics::ContiguousFramebufferConsole::initialize(PhysicalAddress(PCI::get_BAR0(pci_device_identifier.address()) & 0xfffffff0), 1024, 768, 1024 * sizeof(u32));
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GraphicsManagement::the().set_console(*m_framebuffer_console);
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auto vendor_id = pci_device_identifier.hardware_id().vendor_id;
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auto device_id = pci_device_identifier.hardware_id().device_id;
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auto revision_id = pci_device_identifier.revision_id();
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auto is_bochs = vendor_id == PCI::VendorID::QEMUOld && device_id == 0x1111 && revision_id == 0;
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auto is_virtualbox = vendor_id == PCI::VendorID::VirtualBox && device_id == 0xbeef;
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if (is_bochs || is_virtualbox)
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m_io_required = true;
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if (pci_device_identifier.class_code().value() == 0x3 && pci_device_identifier.subclass_code().value() == 0x0)
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m_is_vga_capable = true;
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}
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UNMAP_AFTER_INIT ErrorOr<void> BochsGraphicsAdapter::initialize_adapter(PCI::DeviceIdentifier const& pci_device_identifier)
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{
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// Note: If we use VirtualBox graphics adapter (which is based on Bochs one), we need to use IO ports
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// Note: Bochs (the real bochs graphics adapter in the Bochs emulator) uses revision ID of 0x0
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// and doesn't support memory-mapped IO registers.
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if (pci_device_identifier.revision_id().value() == 0x0
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|| (pci_device_identifier.hardware_id().vendor_id == 0x80ee && pci_device_identifier.hardware_id().device_id == 0xbeef)) {
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m_display_connector = BochsDisplayConnector::must_create(PhysicalAddress(PCI::get_BAR0(pci_device_identifier.address()) & 0xfffffff0));
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} else {
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auto registers_mapping = TRY(Memory::map_typed_writable<BochsDisplayMMIORegisters volatile>(PhysicalAddress(PCI::get_BAR2(pci_device_identifier.address()) & 0xfffffff0)));
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VERIFY(registers_mapping.region);
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m_display_connector = QEMUDisplayConnector::must_create(PhysicalAddress(PCI::get_BAR0(pci_device_identifier.address()) & 0xfffffff0), move(registers_mapping));
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}
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// Note: According to Gerd Hoffmann - "The linux driver simply does
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// the unblank unconditionally. With bochs-display this is not needed but
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// it also has no bad side effect".
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unblank();
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set_safe_resolution();
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}
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// FIXME: If the error is ENOTIMPL, ignore it for now until we implement
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// unblank support for VBoxDisplayConnector class too.
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auto result = m_display_connector->unblank();
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if (result.is_error() && result.error().code() != ENOTIMPL)
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return result;
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UNMAP_AFTER_INIT void BochsGraphicsAdapter::initialize_framebuffer_devices()
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{
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// FIXME: Find a better way to determine default resolution...
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m_framebuffer_device = FramebufferDevice::create(*this, PhysicalAddress(PCI::get_BAR0(pci_address()) & 0xfffffff0), 1024, 768, 1024 * sizeof(u32));
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// While write-combine helps greatly on actual hardware, it greatly reduces performance in QEMU
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m_framebuffer_device->enable_write_combine(false);
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// FIXME: Would be nice to be able to return a ErrorOr<void> here.
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VERIFY(!m_framebuffer_device->try_to_initialize().is_error());
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TRY(m_display_connector->set_safe_mode_setting());
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return {};
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}
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bool BochsGraphicsAdapter::vga_compatible() const
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@ -91,151 +71,11 @@ bool BochsGraphicsAdapter::vga_compatible() const
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return m_is_vga_capable;
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}
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void BochsGraphicsAdapter::unblank()
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{
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full_memory_barrier();
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m_registers->vga_ioports[0] = 0x20;
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full_memory_barrier();
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}
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void BochsGraphicsAdapter::set_safe_resolution()
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{
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VERIFY(m_framebuffer_console);
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auto result = try_to_set_resolution(0, 1024, 768);
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VERIFY(result);
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}
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static void set_register_with_io(u16 index, u16 data)
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{
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IO::out16(VBE_DISPI_IOPORT_INDEX, index);
|
||||
IO::out16(VBE_DISPI_IOPORT_DATA, data);
|
||||
}
|
||||
|
||||
static u16 get_register_with_io(u16 index)
|
||||
{
|
||||
IO::out16(VBE_DISPI_IOPORT_INDEX, index);
|
||||
return IO::in16(VBE_DISPI_IOPORT_DATA);
|
||||
}
|
||||
|
||||
BochsGraphicsAdapter::IndexID BochsGraphicsAdapter::index_id() const
|
||||
{
|
||||
if (m_io_required) {
|
||||
return get_register_with_io(0);
|
||||
}
|
||||
return m_registers->bochs_regs.index_id;
|
||||
}
|
||||
|
||||
void BochsGraphicsAdapter::set_resolution_registers_via_io(size_t width, size_t height)
|
||||
{
|
||||
dbgln_if(BXVGA_DEBUG, "BochsGraphicsAdapter resolution registers set to - {}x{}", width, height);
|
||||
|
||||
set_register_with_io(to_underlying(BochsDISPIRegisters::ENABLE), 0);
|
||||
set_register_with_io(to_underlying(BochsDISPIRegisters::XRES), (u16)width);
|
||||
set_register_with_io(to_underlying(BochsDISPIRegisters::YRES), (u16)height);
|
||||
set_register_with_io(to_underlying(BochsDISPIRegisters::VIRT_WIDTH), (u16)width);
|
||||
set_register_with_io(to_underlying(BochsDISPIRegisters::VIRT_HEIGHT), (u16)height * 2);
|
||||
set_register_with_io(to_underlying(BochsDISPIRegisters::BPP), 32);
|
||||
set_register_with_io(to_underlying(BochsDISPIRegisters::ENABLE), to_underlying(BochsFramebufferSettings::Enabled) | to_underlying(BochsFramebufferSettings::LinearFramebuffer));
|
||||
set_register_with_io(to_underlying(BochsDISPIRegisters::BANK), 0);
|
||||
}
|
||||
|
||||
void BochsGraphicsAdapter::set_resolution_registers(size_t width, size_t height)
|
||||
{
|
||||
dbgln_if(BXVGA_DEBUG, "BochsGraphicsAdapter resolution registers set to - {}x{}", width, height);
|
||||
m_registers->bochs_regs.enable = 0;
|
||||
full_memory_barrier();
|
||||
m_registers->bochs_regs.xres = width;
|
||||
m_registers->bochs_regs.yres = height;
|
||||
m_registers->bochs_regs.virt_width = width;
|
||||
m_registers->bochs_regs.virt_height = height * 2;
|
||||
m_registers->bochs_regs.bpp = 32;
|
||||
full_memory_barrier();
|
||||
m_registers->bochs_regs.enable = to_underlying(BochsFramebufferSettings::Enabled) | to_underlying(BochsFramebufferSettings::LinearFramebuffer);
|
||||
full_memory_barrier();
|
||||
m_registers->bochs_regs.bank = 0;
|
||||
if (index_id().value() == VBE_DISPI_ID5) {
|
||||
set_framebuffer_to_little_endian_format();
|
||||
}
|
||||
}
|
||||
|
||||
bool BochsGraphicsAdapter::try_to_set_resolution(size_t output_port_index, size_t width, size_t height)
|
||||
{
|
||||
// Note: There's only one output port for this adapter
|
||||
VERIFY(output_port_index == 0);
|
||||
VERIFY(m_framebuffer_console);
|
||||
if (Checked<size_t>::multiplication_would_overflow(width, height, sizeof(u32)))
|
||||
return false;
|
||||
|
||||
if (m_io_required)
|
||||
set_resolution_registers_via_io(width, height);
|
||||
else
|
||||
set_resolution_registers(width, height);
|
||||
dbgln_if(BXVGA_DEBUG, "BochsGraphicsAdapter resolution test - {}x{}", width, height);
|
||||
if (m_io_required) {
|
||||
if (!validate_setup_resolution_with_io(width, height))
|
||||
return false;
|
||||
} else {
|
||||
if (!validate_setup_resolution(width, height))
|
||||
return false;
|
||||
}
|
||||
|
||||
dbgln("BochsGraphicsAdapter: resolution set to {}x{}", width, height);
|
||||
m_framebuffer_console->set_resolution(width, height, width * sizeof(u32));
|
||||
return true;
|
||||
}
|
||||
|
||||
bool BochsGraphicsAdapter::validate_setup_resolution_with_io(size_t width, size_t height)
|
||||
{
|
||||
if ((u16)width != get_register_with_io(to_underlying(BochsDISPIRegisters::XRES)) || (u16)height != get_register_with_io(to_underlying(BochsDISPIRegisters::YRES))) {
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
bool BochsGraphicsAdapter::validate_setup_resolution(size_t width, size_t height)
|
||||
{
|
||||
if ((u16)width != m_registers->bochs_regs.xres || (u16)height != m_registers->bochs_regs.yres) {
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
bool BochsGraphicsAdapter::set_y_offset(size_t output_port_index, size_t y_offset)
|
||||
{
|
||||
VERIFY(output_port_index == 0);
|
||||
if (m_console_enabled)
|
||||
return false;
|
||||
m_registers->bochs_regs.y_offset = y_offset;
|
||||
return true;
|
||||
}
|
||||
|
||||
void BochsGraphicsAdapter::enable_consoles()
|
||||
{
|
||||
SpinlockLocker lock(m_console_mode_switch_lock);
|
||||
VERIFY(m_framebuffer_console);
|
||||
m_console_enabled = true;
|
||||
m_registers->bochs_regs.y_offset = 0;
|
||||
if (m_framebuffer_device)
|
||||
m_framebuffer_device->deactivate_writes();
|
||||
m_framebuffer_console->enable();
|
||||
}
|
||||
void BochsGraphicsAdapter::disable_consoles()
|
||||
{
|
||||
SpinlockLocker lock(m_console_mode_switch_lock);
|
||||
VERIFY(m_framebuffer_console);
|
||||
VERIFY(m_framebuffer_device);
|
||||
m_console_enabled = false;
|
||||
m_registers->bochs_regs.y_offset = 0;
|
||||
m_framebuffer_console->disable();
|
||||
m_framebuffer_device->activate_writes();
|
||||
}
|
||||
|
||||
ErrorOr<ByteBuffer> BochsGraphicsAdapter::get_edid(size_t output_port_index) const
|
||||
{
|
||||
if (output_port_index != 0)
|
||||
return Error::from_errno(ENODEV);
|
||||
|
||||
return ByteBuffer::copy(const_cast<u8 const*>(m_registers->edid_data), sizeof(m_registers->edid_data));
|
||||
return m_display_connector->get_edid();
|
||||
}
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -20,18 +20,17 @@ namespace Kernel {
|
|||
class GraphicsManagement;
|
||||
struct BochsDisplayMMIORegisters;
|
||||
|
||||
class BochsDisplayConnector;
|
||||
class BochsGraphicsAdapter final : public GenericGraphicsAdapter
|
||||
, public PCI::Device {
|
||||
friend class GraphicsManagement;
|
||||
|
||||
private:
|
||||
TYPEDEF_DISTINCT_ORDERED_ID(u16, IndexID);
|
||||
|
||||
public:
|
||||
static NonnullRefPtr<BochsGraphicsAdapter> initialize(PCI::DeviceIdentifier const&);
|
||||
virtual ~BochsGraphicsAdapter() = default;
|
||||
virtual bool framebuffer_devices_initialized() const override { return !m_framebuffer_device.is_null(); }
|
||||
|
||||
// FIXME: Remove all of these methods when we get rid of the FramebufferDevice class.
|
||||
virtual bool framebuffer_devices_initialized() const override { return false; }
|
||||
virtual bool modesetting_capable() const override { return true; }
|
||||
virtual bool double_framebuffering_capable() const override { return true; }
|
||||
|
||||
|
|
@ -40,39 +39,19 @@ public:
|
|||
private:
|
||||
ErrorOr<ByteBuffer> get_edid(size_t output_port_index) const override;
|
||||
|
||||
ErrorOr<void> initialize_adapter(PCI::DeviceIdentifier const&);
|
||||
|
||||
// ^GenericGraphicsAdapter
|
||||
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;
|
||||
|
||||
virtual void initialize_framebuffer_devices() override;
|
||||
|
||||
virtual void enable_consoles() override;
|
||||
virtual void disable_consoles() override;
|
||||
// FIXME: Remove all of these methods when we get rid of the FramebufferDevice class.
|
||||
virtual bool try_to_set_resolution(size_t, size_t, size_t) override { VERIFY_NOT_REACHED(); }
|
||||
virtual bool set_y_offset(size_t, size_t) override { VERIFY_NOT_REACHED(); }
|
||||
virtual void initialize_framebuffer_devices() override { }
|
||||
virtual void enable_consoles() override { }
|
||||
virtual void disable_consoles() override { }
|
||||
|
||||
explicit BochsGraphicsAdapter(PCI::DeviceIdentifier const&);
|
||||
|
||||
IndexID index_id() const;
|
||||
|
||||
void set_safe_resolution();
|
||||
void unblank();
|
||||
|
||||
bool validate_setup_resolution(size_t width, size_t height);
|
||||
u32 find_framebuffer_address();
|
||||
void set_resolution_registers(size_t width, size_t height);
|
||||
void set_resolution_registers_via_io(size_t width, size_t height);
|
||||
bool validate_setup_resolution_with_io(size_t width, size_t height);
|
||||
void set_y_offset(size_t);
|
||||
|
||||
void set_framebuffer_to_big_endian_format();
|
||||
void set_framebuffer_to_little_endian_format();
|
||||
|
||||
PhysicalAddress m_mmio_registers;
|
||||
Memory::TypedMapping<BochsDisplayMMIORegisters volatile> m_registers;
|
||||
RefPtr<FramebufferDevice> m_framebuffer_device;
|
||||
RefPtr<Graphics::GenericFramebufferConsole> m_framebuffer_console;
|
||||
Spinlock m_console_mode_switch_lock;
|
||||
bool m_console_enabled { false };
|
||||
bool m_io_required { false };
|
||||
RefPtr<BochsDisplayConnector> m_display_connector;
|
||||
bool m_is_vga_capable { false };
|
||||
};
|
||||
}
|
||||
|
|
|
|||
139
Kernel/Graphics/Bochs/QEMUDisplayConnector.cpp
Normal file
139
Kernel/Graphics/Bochs/QEMUDisplayConnector.cpp
Normal file
|
|
@ -0,0 +1,139 @@
|
|||
/*
|
||||
* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <Kernel/Debug.h>
|
||||
#include <Kernel/Devices/DeviceManagement.h>
|
||||
#include <Kernel/Graphics/Bochs/QEMUDisplayConnector.h>
|
||||
#include <Kernel/Graphics/GraphicsManagement.h>
|
||||
#include <LibEDID/Definitions.h>
|
||||
|
||||
namespace Kernel {
|
||||
|
||||
NonnullRefPtr<QEMUDisplayConnector> QEMUDisplayConnector::must_create(PhysicalAddress framebuffer_address, Memory::TypedMapping<BochsDisplayMMIORegisters volatile> registers_mapping)
|
||||
{
|
||||
auto device_or_error = DeviceManagement::try_create_device<QEMUDisplayConnector>(framebuffer_address, move(registers_mapping));
|
||||
VERIFY(!device_or_error.is_error());
|
||||
auto connector = device_or_error.release_value();
|
||||
MUST(connector->create_attached_framebuffer_console());
|
||||
MUST(connector->fetch_and_initialize_edid());
|
||||
return connector;
|
||||
}
|
||||
|
||||
ErrorOr<void> QEMUDisplayConnector::fetch_and_initialize_edid()
|
||||
{
|
||||
Array<u8, 128> bochs_edid;
|
||||
static_assert(sizeof(BochsDisplayMMIORegisters::edid_data) >= sizeof(EDID::Definitions::EDID));
|
||||
memcpy(bochs_edid.data(), (u8 const*)(m_registers.base_address().offset(__builtin_offsetof(BochsDisplayMMIORegisters, edid_data)).as_ptr()), sizeof(bochs_edid));
|
||||
set_edid_bytes(bochs_edid);
|
||||
return {};
|
||||
}
|
||||
|
||||
QEMUDisplayConnector::QEMUDisplayConnector(PhysicalAddress framebuffer_address, Memory::TypedMapping<BochsDisplayMMIORegisters volatile> registers_mapping)
|
||||
: BochsDisplayConnector(framebuffer_address)
|
||||
, m_registers(move(registers_mapping))
|
||||
{
|
||||
}
|
||||
|
||||
QEMUDisplayConnector::IndexID QEMUDisplayConnector::index_id() const
|
||||
{
|
||||
return m_registers->bochs_regs.index_id;
|
||||
}
|
||||
|
||||
void QEMUDisplayConnector::set_framebuffer_to_big_endian_format()
|
||||
{
|
||||
VERIFY(m_modeset_lock.is_locked());
|
||||
dbgln_if(BXVGA_DEBUG, "QEMUDisplayConnector set_framebuffer_to_big_endian_format");
|
||||
full_memory_barrier();
|
||||
if (m_registers->extension_regs.region_size == 0xFFFFFFFF || m_registers->extension_regs.region_size == 0)
|
||||
return;
|
||||
full_memory_barrier();
|
||||
m_registers->extension_regs.framebuffer_byteorder = BOCHS_DISPLAY_BIG_ENDIAN;
|
||||
full_memory_barrier();
|
||||
}
|
||||
|
||||
void QEMUDisplayConnector::set_framebuffer_to_little_endian_format()
|
||||
{
|
||||
VERIFY(m_modeset_lock.is_locked());
|
||||
dbgln_if(BXVGA_DEBUG, "QEMUDisplayConnector set_framebuffer_to_little_endian_format");
|
||||
full_memory_barrier();
|
||||
if (m_registers->extension_regs.region_size == 0xFFFFFFFF || m_registers->extension_regs.region_size == 0)
|
||||
return;
|
||||
full_memory_barrier();
|
||||
m_registers->extension_regs.framebuffer_byteorder = BOCHS_DISPLAY_LITTLE_ENDIAN;
|
||||
full_memory_barrier();
|
||||
}
|
||||
|
||||
ErrorOr<void> QEMUDisplayConnector::unblank()
|
||||
{
|
||||
SpinlockLocker locker(m_modeset_lock);
|
||||
full_memory_barrier();
|
||||
m_registers->vga_ioports[0] = 0x20;
|
||||
full_memory_barrier();
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> QEMUDisplayConnector::set_y_offset(size_t y_offset)
|
||||
{
|
||||
VERIFY(m_modeset_lock.is_locked());
|
||||
m_registers->bochs_regs.y_offset = y_offset;
|
||||
return {};
|
||||
}
|
||||
|
||||
ErrorOr<void> QEMUDisplayConnector::set_mode_setting(ModeSetting const& mode_setting)
|
||||
{
|
||||
SpinlockLocker locker(m_modeset_lock);
|
||||
VERIFY(m_framebuffer_console);
|
||||
size_t width = mode_setting.horizontal_active;
|
||||
size_t height = mode_setting.vertical_active;
|
||||
|
||||
if (Checked<size_t>::multiplication_would_overflow(width, height, sizeof(u32)))
|
||||
return EOVERFLOW;
|
||||
|
||||
dbgln_if(BXVGA_DEBUG, "QEMUDisplayConnector resolution registers set to - {}x{}", width, height);
|
||||
m_registers->bochs_regs.enable = 0;
|
||||
full_memory_barrier();
|
||||
m_registers->bochs_regs.xres = width;
|
||||
m_registers->bochs_regs.yres = height;
|
||||
m_registers->bochs_regs.virt_width = width;
|
||||
m_registers->bochs_regs.virt_height = height * 2;
|
||||
m_registers->bochs_regs.bpp = 32;
|
||||
full_memory_barrier();
|
||||
m_registers->bochs_regs.enable = to_underlying(BochsFramebufferSettings::Enabled) | to_underlying(BochsFramebufferSettings::LinearFramebuffer);
|
||||
full_memory_barrier();
|
||||
m_registers->bochs_regs.bank = 0;
|
||||
if (index_id().value() == VBE_DISPI_ID5) {
|
||||
set_framebuffer_to_little_endian_format();
|
||||
}
|
||||
|
||||
if ((u16)width != m_registers->bochs_regs.xres || (u16)height != m_registers->bochs_regs.yres) {
|
||||
return Error::from_errno(ENOTIMPL);
|
||||
}
|
||||
auto rounded_size = TRY(Memory::page_round_up(width * sizeof(u32) * height * 2));
|
||||
m_framebuffer_region = TRY(MM.allocate_kernel_region(m_framebuffer_address.page_base(), rounded_size, "Framebuffer"sv, Memory::Region::Access::ReadWrite));
|
||||
[[maybe_unused]] auto result = m_framebuffer_region->set_write_combine(true);
|
||||
m_framebuffer_data = m_framebuffer_region->vaddr().offset(m_framebuffer_address.offset_in_page()).as_ptr();
|
||||
m_framebuffer_console->set_resolution(width, height, width * sizeof(u32));
|
||||
|
||||
DisplayConnector::ModeSetting mode_set {
|
||||
.horizontal_stride = m_registers->bochs_regs.xres * sizeof(u32),
|
||||
.pixel_clock_in_khz = 0, // Note: There's no pixel clock in paravirtualized hardware
|
||||
.horizontal_active = m_registers->bochs_regs.xres,
|
||||
.horizontal_front_porch_pixels = 0, // Note: There's no horizontal_front_porch_pixels in paravirtualized hardware
|
||||
.horizontal_sync_time_pixels = 0, // Note: There's no horizontal_sync_time_pixels in paravirtualized hardware
|
||||
.horizontal_blank_pixels = 0, // Note: There's no horizontal_blank_pixels in paravirtualized hardware
|
||||
.vertical_active = m_registers->bochs_regs.yres,
|
||||
.vertical_front_porch_lines = 0, // Note: There's no vertical_front_porch_lines in paravirtualized hardware
|
||||
.vertical_sync_time_lines = 0, // Note: There's no vertical_sync_time_lines in paravirtualized hardware
|
||||
.vertical_blank_lines = 0, // Note: There's no vertical_blank_lines in paravirtualized hardware
|
||||
.horizontal_offset = 0,
|
||||
.vertical_offset = 0,
|
||||
};
|
||||
|
||||
m_current_mode_setting = mode_set;
|
||||
return {};
|
||||
}
|
||||
|
||||
}
|
||||
44
Kernel/Graphics/Bochs/QEMUDisplayConnector.h
Normal file
44
Kernel/Graphics/Bochs/QEMUDisplayConnector.h
Normal file
|
|
@ -0,0 +1,44 @@
|
|||
/*
|
||||
* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/RefPtr.h>
|
||||
#include <AK/Try.h>
|
||||
#include <Kernel/Graphics/Bochs/DisplayConnector.h>
|
||||
#include <Kernel/Graphics/Console/GenericFramebufferConsole.h>
|
||||
#include <Kernel/Locking/Spinlock.h>
|
||||
#include <Kernel/Memory/TypedMapping.h>
|
||||
|
||||
namespace Kernel {
|
||||
|
||||
struct BochsDisplayMMIORegisters;
|
||||
class QEMUDisplayConnector final
|
||||
: public BochsDisplayConnector {
|
||||
friend class BochsGraphicsAdapter;
|
||||
friend class DeviceManagement;
|
||||
|
||||
public:
|
||||
static NonnullRefPtr<QEMUDisplayConnector> must_create(PhysicalAddress framebuffer_address, Memory::TypedMapping<BochsDisplayMMIORegisters volatile>);
|
||||
|
||||
virtual IndexID index_id() const override;
|
||||
|
||||
private:
|
||||
ErrorOr<void> fetch_and_initialize_edid();
|
||||
QEMUDisplayConnector(PhysicalAddress framebuffer_address, Memory::TypedMapping<BochsDisplayMMIORegisters volatile>);
|
||||
|
||||
virtual bool double_framebuffering_capable() const override { return true; }
|
||||
virtual ErrorOr<void> set_mode_setting(ModeSetting const&) override;
|
||||
virtual ErrorOr<void> set_y_offset(size_t y) override;
|
||||
virtual ErrorOr<void> unblank() override;
|
||||
|
||||
void set_framebuffer_to_big_endian_format();
|
||||
void set_framebuffer_to_little_endian_format();
|
||||
|
||||
private:
|
||||
Memory::TypedMapping<BochsDisplayMMIORegisters volatile> m_registers;
|
||||
};
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue