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Kernel: Move x86 Bochs VBE code to the Arch/x86 directory

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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 2022-09-03 12:30:39 +03:00 • committed by Linus Groh
parent c50a81e93e
commit 8d6da9863f
7 changed files with 86 additions and 13 deletions
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13
Kernel/Graphics/Bochs/GraphicsAdapter.cpp
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@ -7,11 +7,13 @@
#include <AK/Atomic.h>
#include <AK/Checked.h>
#include <AK/Try.h>
#if ARCH(I386) || ARCH(X86_64)
# include <Kernel/Arch/x86/Hypervisor/BochsDisplayConnector.h>
#endif
#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>
@ -40,6 +42,10 @@ UNMAP_AFTER_INIT ErrorOr<void> BochsGraphicsAdapter::initialize_adapter(PCI::Dev
// 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.
// Note: In non x86-builds, we should never encounter VirtualBox hardware nor Pure Bochs VBE graphics,
// so just assume we can use the QEMU BochsVBE-compatible graphics adapter only.
#if ARCH(I386) || ARCH(X86_64)
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(), PCI::HeaderType0BaseRegister::BAR0);
if (pci_device_identifier.revision_id().value() == 0x0 || virtual_box_hardware) {
@ -49,6 +55,11 @@ UNMAP_AFTER_INIT ErrorOr<void> BochsGraphicsAdapter::initialize_adapter(PCI::Dev
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));
}
#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));
#endif
// Note: According to Gerd Hoffmann - "The linux driver simply does
// the unblank unconditionally. With bochs-display this is not needed but