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/*
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Atomic.h>
#include <AK/Checked.h>
#include <AK/Try.h>
#include <Kernel/Arch/x86/IO.h>
#include <Kernel/Bus/PCI/API.h>
#include <Kernel/Bus/PCI/IDs.h>
#include <Kernel/Debug.h>
#include <Kernel/Graphics/Bochs/Definitions.h>
#include <Kernel/Graphics/Bochs/DisplayConnector.h>
#include <Kernel/Graphics/Bochs/GraphicsAdapter.h>
#include <Kernel/Graphics/Bochs/QEMUDisplayConnector.h>
#include <Kernel/Graphics/Console/ContiguousFramebufferConsole.h>
#include <Kernel/Graphics/GraphicsManagement.h>
#include <Kernel/Memory/TypedMapping.h>
#include <Kernel/Sections.h>
namespace Kernel {
UNMAP_AFTER_INIT NonnullRefPtr<BochsGraphicsAdapter> BochsGraphicsAdapter::initialize(PCI::DeviceIdentifier const& pci_device_identifier)
{
PCI::HardwareID id = pci_device_identifier.hardware_id();
VERIFY((id.vendor_id == PCI::VendorID::QEMUOld && id.device_id == 0x1111) || (id.vendor_id == PCI::VendorID::VirtualBox && id.device_id == 0xbeef));
auto adapter = adopt_ref(*new BochsGraphicsAdapter(pci_device_identifier));
MUST(adapter->initialize_adapter(pci_device_identifier));
return adapter;
}
UNMAP_AFTER_INIT BochsGraphicsAdapter::BochsGraphicsAdapter(PCI::DeviceIdentifier const& pci_device_identifier)
: PCI::Device(pci_device_identifier.address())
{
}
UNMAP_AFTER_INIT ErrorOr<void> BochsGraphicsAdapter::initialize_adapter(PCI::DeviceIdentifier const& pci_device_identifier)
{
// Note: If we use VirtualBox graphics adapter (which is based on Bochs one), we need to use IO ports
// Note: Bochs (the real bochs graphics adapter in the Bochs emulator) uses revision ID of 0x0
// and doesn't support memory-mapped IO registers.
bool virtual_box_hardware = (pci_device_identifier.hardware_id().vendor_id == 0x80ee && pci_device_identifier.hardware_id().device_id == 0xbeef);
auto bar0_space_size = PCI::get_BAR_space_size(pci_device_identifier.address(), 0);
if (pci_device_identifier.revision_id().value() == 0x0 || virtual_box_hardware) {
m_display_connector = BochsDisplayConnector::must_create(PhysicalAddress(PCI::get_BAR0(pci_device_identifier.address()) & 0xfffffff0), bar0_space_size, virtual_box_hardware);
} else {
auto registers_mapping = TRY(Memory::map_typed_writable<BochsDisplayMMIORegisters volatile>(PhysicalAddress(PCI::get_BAR2(pci_device_identifier.address()) & 0xfffffff0)));
VERIFY(registers_mapping.region);
m_display_connector = QEMUDisplayConnector::must_create(PhysicalAddress(PCI::get_BAR0(pci_device_identifier.address()) & 0xfffffff0), bar0_space_size, move(registers_mapping));
}
// Note: According to Gerd Hoffmann - "The linux driver simply does
// the unblank unconditionally. With bochs-display this is not needed but
// it also has no bad side effect".
// FIXME: If the error is ENOTIMPL, ignore it for now until we implement
// unblank support for VBoxDisplayConnector class too.
auto result = m_display_connector->unblank();
if (result.is_error() && result.error().code() != ENOTIMPL)
return result;
TRY(m_display_connector->set_safe_mode_setting());
return {};
}
}
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