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143a64f9a2
These instances were detected by searching for files that include Kernel/Debug.h, but don't match the regex: \\bdbgln_if\(|_DEBUG\\b This regex is pessimistic, so there might be more files that don't check for any real *_DEBUG macro. There seem to be no corner cases anyway. In theory, one might use LibCPP to detect things like this automatically, but let's do this one step after another.
77 lines
3.8 KiB
C++
77 lines
3.8 KiB
C++
/*
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* Copyright (c) 2021, 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 <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(X86_64)
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# include <Kernel/Arch/x86_64/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/Graphics/Bochs/Definitions.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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#include <Kernel/Sections.h>
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namespace Kernel {
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UNMAP_AFTER_INIT NonnullLockRefPtr<BochsGraphicsAdapter> BochsGraphicsAdapter::initialize(PCI::DeviceIdentifier const& pci_device_identifier)
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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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auto adapter = adopt_lock_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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{
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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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// 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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auto bar0_space_size = PCI::get_BAR_space_size(pci_device_identifier.address(), PCI::HeaderType0BaseRegister::BAR0);
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#if 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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if (pci_device_identifier.revision_id().value() == 0x0 || virtual_box_hardware) {
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m_display_connector = BochsDisplayConnector::must_create(PhysicalAddress(PCI::get_BAR0(pci_device_identifier.address()) & 0xfffffff0), bar0_space_size, virtual_box_hardware);
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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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}
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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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// it also has no bad side effect".
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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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TRY(m_display_connector->set_safe_mode_setting());
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return {};
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}
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}
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