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Kernel: Move x86 Bochs VBE code to the Arch/x86 directory
To do this, we make the QEMUDisplayConnector class more standalone so it does not need to inherit from the BochsDisplayConnector class.
This commit is contained in:
Liav A
Linus Groh
parent
c50a81e93e
commit
8d6da9863f
7 changed files with 86 additions and 13 deletions
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@ -1,150 +0,0 @@
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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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NonnullLockRefPtr<BochsDisplayConnector> BochsDisplayConnector::must_create(PhysicalAddress framebuffer_address, size_t framebuffer_resource_size, bool virtual_box_hardware)
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{
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auto device_or_error = DeviceManagement::try_create_device<BochsDisplayConnector>(framebuffer_address, framebuffer_resource_size);
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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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if (virtual_box_hardware)
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MUST(connector->initialize_edid_for_generic_monitor(Array<u8, 3> { 'V', 'B', 'X' }));
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else
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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, size_t framebuffer_resource_size)
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: DisplayConnector(framebuffer_address, framebuffer_resource_size, false)
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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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// We assume safe resolution is 1024x768x32
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m_framebuffer_console = Graphics::ContiguousFramebufferConsole::initialize(m_framebuffer_address.value(), 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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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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@ -1,55 +0,0 @@
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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/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/Library/LockRefPtr.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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AK_TYPEDEF_DISTINCT_ORDERED_ID(u16, IndexID);
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static NonnullLockRefPtr<BochsDisplayConnector> must_create(PhysicalAddress framebuffer_address, size_t framebuffer_resource_size, bool virtual_box_hardware);
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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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BochsDisplayConnector(PhysicalAddress framebuffer_address, size_t framebuffer_resource_size);
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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<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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LockRefPtr<Graphics::GenericFramebufferConsole> m_framebuffer_console;
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};
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}
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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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#if ARCH(I386) || ARCH(X86_64)
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# include <Kernel/Arch/x86/Hypervisor/BochsDisplayConnector.h>
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#endif
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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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// 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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// Note: In non x86-builds, we should never encounter VirtualBox hardware nor Pure Bochs VBE graphics,
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// so just assume we can use the QEMU BochsVBE-compatible graphics adapter only.
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#if ARCH(I386) || ARCH(X86_64)
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bool virtual_box_hardware = (pci_device_identifier.hardware_id().vendor_id == 0x80ee && pci_device_identifier.hardware_id().device_id == 0xbeef);
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auto bar0_space_size = PCI::get_BAR_space_size(pci_device_identifier.address(), PCI::HeaderType0BaseRegister::BAR0);
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if (pci_device_identifier.revision_id().value() == 0x0 || virtual_box_hardware) {
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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), bar0_space_size, move(registers_mapping));
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}
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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), bar0_space_size, move(registers_mapping));
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#endif
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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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@ -19,7 +19,6 @@ namespace Kernel {
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class GraphicsManagement;
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struct BochsDisplayMMIORegisters;
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class BochsDisplayConnector;
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class BochsGraphicsAdapter final : public GenericGraphicsAdapter
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, public PCI::Device {
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friend class GraphicsManagement;
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@ -33,6 +32,6 @@ private:
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explicit BochsGraphicsAdapter(PCI::DeviceIdentifier const&);
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LockRefPtr<BochsDisplayConnector> m_display_connector;
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LockRefPtr<DisplayConnector> m_display_connector;
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};
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}
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@ -7,6 +7,7 @@
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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/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 <LibEDID/Definitions.h>
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@ -31,8 +32,54 @@ ErrorOr<void> QEMUDisplayConnector::fetch_and_initialize_edid()
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return {};
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}
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ErrorOr<void> QEMUDisplayConnector::create_attached_framebuffer_console()
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{
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// We assume safe resolution is 1024x768x32
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m_framebuffer_console = Graphics::ContiguousFramebufferConsole::initialize(m_framebuffer_address.value(), 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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void QEMUDisplayConnector::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 QEMUDisplayConnector::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> QEMUDisplayConnector::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> QEMUDisplayConnector::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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QEMUDisplayConnector::QEMUDisplayConnector(PhysicalAddress framebuffer_address, size_t framebuffer_resource_size, Memory::TypedMapping<BochsDisplayMMIORegisters volatile> registers_mapping)
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: BochsDisplayConnector(framebuffer_address, framebuffer_resource_size)
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: DisplayConnector(framebuffer_address, framebuffer_resource_size, false)
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, m_registers(move(registers_mapping))
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{
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}
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@ -7,8 +7,9 @@
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#pragma once
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#include <AK/Try.h>
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#include <Kernel/Graphics/Bochs/DisplayConnector.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/Library/LockRefPtr.h>
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#include <Kernel/Locking/Spinlock.h>
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#include <Kernel/Memory/TypedMapping.h>
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@ -17,28 +18,42 @@ namespace Kernel {
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struct BochsDisplayMMIORegisters;
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class QEMUDisplayConnector final
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: public 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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AK_TYPEDEF_DISTINCT_ORDERED_ID(u16, IndexID);
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static NonnullLockRefPtr<QEMUDisplayConnector> must_create(PhysicalAddress framebuffer_address, size_t framebuffer_resource_size, Memory::TypedMapping<BochsDisplayMMIORegisters volatile>);
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virtual IndexID index_id() const override;
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private:
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IndexID index_id() const;
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ErrorOr<void> fetch_and_initialize_edid();
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ErrorOr<void> create_attached_framebuffer_console();
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QEMUDisplayConnector(PhysicalAddress framebuffer_address, size_t framebuffer_resource_size, Memory::TypedMapping<BochsDisplayMMIORegisters volatile>);
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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 true; }
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virtual ErrorOr<void> set_mode_setting(ModeSetting const&) override;
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virtual ErrorOr<void> set_y_offset(size_t y) override;
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virtual ErrorOr<void> set_safe_mode_setting() override final;
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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<void> flush_first_surface() override final;
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void set_framebuffer_to_big_endian_format();
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void set_framebuffer_to_little_endian_format();
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private:
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virtual void enable_console() override final;
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virtual void disable_console() override final;
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LockRefPtr<Graphics::GenericFramebufferConsole> m_framebuffer_console;
|
||||
|
||||
Memory::TypedMapping<BochsDisplayMMIORegisters volatile> m_registers;
|
||||
};
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue