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Kernel: Allow AHCIController::initialize() to fail

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If we fail to initialize an AHCI controller, we now skip adding it to
the list of storage controllers in StorageManagement.
This commit is contained in:
Julian Offenhäuser 2023-03-14 14:13:50 +01:00 • committed by Andreas Kling
parent d1e88a5141
commit 5541dfd9f8
3 changed files with 13 additions and 7 deletions
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11
Kernel/Storage/ATA/AHCI/Controller.cpp
View file

@ -18,10 +18,10 @@
namespace Kernel {
UNMAP_AFTER_INIT NonnullRefPtr<AHCIController> AHCIController::initialize(PCI::DeviceIdentifier const& pci_device_identifier)
UNMAP_AFTER_INIT ErrorOr<NonnullRefPtr<AHCIController>> AHCIController::initialize(PCI::DeviceIdentifier const& pci_device_identifier)
{
auto controller = adopt_ref_if_nonnull(new (nothrow) AHCIController(pci_device_identifier)).release_nonnull();
controller->initialize_hba(pci_device_identifier);
TRY(controller->initialize_hba(pci_device_identifier));
return controller;
}
@ -161,7 +161,7 @@ UNMAP_AFTER_INIT NonnullOwnPtr<Memory::Region> AHCIController::default_hba_regio
AHCIController::~AHCIController() = default;
UNMAP_AFTER_INIT void AHCIController::initialize_hba(PCI::DeviceIdentifier const& pci_device_identifier)
UNMAP_AFTER_INIT ErrorOr<void> AHCIController::initialize_hba(PCI::DeviceIdentifier const& pci_device_identifier)
{
u32 version = hba().control_regs.version;
@ -172,9 +172,12 @@ UNMAP_AFTER_INIT void AHCIController::initialize_hba(PCI::DeviceIdentifier const
auto implemented_ports = AHCI::MaskedBitField((u32 volatile&)(hba().control_regs.pi));
m_irq_handler = AHCIInterruptHandler::create(*this, pci_device_identifier.interrupt_line().value(), implemented_ports).release_value_but_fixme_should_propagate_errors();
reset();
TRY(reset());
dbgln_if(AHCI_DEBUG, "{}: AHCI Controller Version = {:#08x}", device_identifier().address(), version);
dbgln("{}: AHCI command list entries count - {}", device_identifier().address(), m_hba_capabilities.max_command_list_entries_count);
return {};
}
void AHCIController::handle_interrupt_for_port(Badge<AHCIInterruptHandler>, u32 port_index) const

4
Kernel/Storage/ATA/AHCI/Controller.h
View file

@ -24,7 +24,7 @@ class AHCIController final : public ATAController
friend class AHCIInterruptHandler;
public:
static NonnullRefPtr<AHCIController> initialize(PCI::DeviceIdentifier const& pci_device_identifier);
static ErrorOr<NonnullRefPtr<AHCIController>> initialize(PCI::DeviceIdentifier const& pci_device_identifier);
virtual ~AHCIController() override;
virtual StringView device_name() const override { return "AHCI"sv; }
@ -43,7 +43,7 @@ private:
void enable_global_interrupts() const;
explicit AHCIController(PCI::DeviceIdentifier const&);
void initialize_hba(PCI::DeviceIdentifier const&);
ErrorOr<void> initialize_hba(PCI::DeviceIdentifier const&);
AHCI::HBADefinedCapabilities capabilities() const;
LockRefPtr<StorageDevice> device_by_port(u32 index) const;

5
Kernel/Storage/StorageManagement.cpp
View file

@ -111,7 +111,10 @@ UNMAP_AFTER_INIT void StorageManagement::enumerate_pci_controllers(bool force_pi
if (subclass_code == SubclassID::SATAController
&& device_identifier.prog_if().value() == to_underlying(PCI::MassStorage::SATAProgIF::AHCI)) {
m_controllers.append(AHCIController::initialize(device_identifier));
if (auto ahci_controller_or_error = AHCIController::initialize(device_identifier); !ahci_controller_or_error.is_error())
m_controllers.append(ahci_controller_or_error.value());
else
dmesgln("Unable to initialize AHCI controller: {}", ahci_controller_or_error.error());
}
if (subclass_code == SubclassID::NVMeController) {
auto controller = NVMeController::try_initialize(device_identifier, nvme_poll);