Kernel: Add UNMAP_AFTER_INIT to NVMe member functions

NVMeController, NVMeQueue and NVMeNameSpace had functions which are not
used after init. So add them to UNMAP_AFTER_INIT section.

Kernel/Storage/NVMe/NVMeController.cpp

@@ -18,7 +18,7 @@
 namespace Kernel {
 Atomic<u8> NVMeController::controller_id {};
 
-ErrorOr<NonnullRefPtr<NVMeController>> NVMeController::try_initialize(const Kernel::PCI::DeviceIdentifier& device_identifier)
+UNMAP_AFTER_INIT ErrorOr<NonnullRefPtr<NVMeController>> NVMeController::try_initialize(const Kernel::PCI::DeviceIdentifier& device_identifier)
 {
     auto controller = TRY(adopt_nonnull_ref_or_enomem(new NVMeController(device_identifier)));
     TRY(controller->initialize());
@@ -26,13 +26,13 @@ ErrorOr<NonnullRefPtr<NVMeController>> NVMeController::try_initialize(const Kern
     return controller;
 }
 
-NVMeController::NVMeController(const PCI::DeviceIdentifier& device_identifier)
+UNMAP_AFTER_INIT NVMeController::NVMeController(const PCI::DeviceIdentifier& device_identifier)
     : PCI::Device(device_identifier.address())
     , m_pci_device_id(device_identifier)
 {
 }
 
-ErrorOr<void> NVMeController::initialize()
+UNMAP_AFTER_INIT ErrorOr<void> NVMeController::initialize()
 {
     // Nr of queues = one queue per core
     auto nr_of_queues = Processor::count();
@@ -138,7 +138,7 @@ bool NVMeController::start_controller()
     return true;
 }
 
-u32 NVMeController::get_admin_q_dept()
+UNMAP_AFTER_INIT u32 NVMeController::get_admin_q_dept()
 {
     u32 aqa = m_controller_regs->aqa;
     // Queue depth is 0 based
@@ -147,7 +147,7 @@ u32 NVMeController::get_admin_q_dept()
     return q_depth;
 }
 
-ErrorOr<void> NVMeController::identify_and_init_namespaces()
+UNMAP_AFTER_INIT ErrorOr<void> NVMeController::identify_and_init_namespaces()
 {
 
     RefPtr<Memory::PhysicalPage> prp_dma_buffer;
@@ -213,7 +213,7 @@ ErrorOr<void> NVMeController::identify_and_init_namespaces()
     return {};
 }
 
-Tuple<u64, u8> NVMeController::get_ns_features(IdentifyNamespace& identify_data_struct)
+UNMAP_AFTER_INIT Tuple<u64, u8> NVMeController::get_ns_features(IdentifyNamespace& identify_data_struct)
 {
     auto flbas = identify_data_struct.flbas & FLBA_SIZE_MASK;
     auto namespace_size = identify_data_struct.nsze;
@@ -253,7 +253,7 @@ void NVMeController::complete_current_request([[maybe_unused]] AsyncDeviceReques
     VERIFY_NOT_REACHED();
 }
 
-ErrorOr<void> NVMeController::create_admin_queue(u8 irq)
+UNMAP_AFTER_INIT ErrorOr<void> NVMeController::create_admin_queue(u8 irq)
 {
     auto qdepth = get_admin_q_dept();
     OwnPtr<Memory::Region> cq_dma_region;
@@ -296,7 +296,7 @@ ErrorOr<void> NVMeController::create_admin_queue(u8 irq)
     return {};
 }
 
-ErrorOr<void> NVMeController::create_io_queue(u8 irq, u8 qid)
+UNMAP_AFTER_INIT ErrorOr<void> NVMeController::create_io_queue(u8 irq, u8 qid)
 {
     NVMeSubmission sub {};
     OwnPtr<Memory::Region> cq_dma_region;

Kernel/Storage/NVMe/NVMeNameSpace.cpp

@@ -11,7 +11,7 @@
 
 namespace Kernel {
 
-ErrorOr<NonnullRefPtr<NVMeNameSpace>> NVMeNameSpace::try_create(NonnullRefPtrVector<NVMeQueue> queues, u8 controller_id, u16 nsid, size_t storage_size, size_t lba_size)
+UNMAP_AFTER_INIT ErrorOr<NonnullRefPtr<NVMeNameSpace>> NVMeNameSpace::try_create(NonnullRefPtrVector<NVMeQueue> queues, u8 controller_id, u16 nsid, size_t storage_size, size_t lba_size)
 {
     auto minor_number = StorageManagement::generate_storage_minor_number();
     auto major_number = StorageManagement::storage_type_major_number();
@@ -20,7 +20,7 @@ ErrorOr<NonnullRefPtr<NVMeNameSpace>> NVMeNameSpace::try_create(NonnullRefPtrVec
     return device;
 }
 
-NVMeNameSpace::NVMeNameSpace(NonnullRefPtrVector<NVMeQueue> queues, size_t max_addresable_block, size_t lba_size, size_t major_number, size_t minor_number, u16 nsid, NonnullOwnPtr<KString> dev_name)
+UNMAP_AFTER_INIT NVMeNameSpace::NVMeNameSpace(NonnullRefPtrVector<NVMeQueue> queues, size_t max_addresable_block, size_t lba_size, size_t major_number, size_t minor_number, u16 nsid, NonnullOwnPtr<KString> dev_name)
     : StorageDevice(major_number, minor_number, lba_size, max_addresable_block, move(dev_name))
     , m_nsid(nsid)
     , m_queues(move(queues))

Kernel/Storage/NVMe/NVMeQueue.cpp

@@ -20,7 +20,7 @@ ErrorOr<NonnullRefPtr<NVMeQueue>> NVMeQueue::try_create(u16 qid, u8 irq, u32 q_d
     return queue;
 }
 
-NVMeQueue::NVMeQueue(u16 qid, u8 irq, u32 q_depth, OwnPtr<Memory::Region> cq_dma_region, NonnullRefPtrVector<Memory::PhysicalPage> cq_dma_page, OwnPtr<Memory::Region> sq_dma_region, NonnullRefPtrVector<Memory::PhysicalPage> sq_dma_page, Memory::TypedMapping<volatile DoorbellRegister> db_regs)
+UNMAP_AFTER_INIT NVMeQueue::NVMeQueue(u16 qid, u8 irq, u32 q_depth, OwnPtr<Memory::Region> cq_dma_region, NonnullRefPtrVector<Memory::PhysicalPage> cq_dma_page, OwnPtr<Memory::Region> sq_dma_region, NonnullRefPtrVector<Memory::PhysicalPage> sq_dma_page, Memory::TypedMapping<volatile DoorbellRegister> db_regs)
     : IRQHandler(irq)
     , m_qid(qid)
     , m_admin_queue(qid == 0)
@@ -38,7 +38,7 @@ NVMeQueue::NVMeQueue(u16 qid, u8 irq, u32 q_depth, OwnPtr<Memory::Region> cq_dma
     m_cqe_array = { reinterpret_cast<NVMeCompletion*>(m_cq_dma_region->vaddr().as_ptr()), m_qdepth };
 }
 
-ErrorOr<void> NVMeQueue::create()
+UNMAP_AFTER_INIT ErrorOr<void> NVMeQueue::create()
 {
     // DMA region for RW operation. For now the requests don't exceed more than 4096 bytes(Storage device takes of it)
     auto buffer = TRY(MM.allocate_dma_buffer_page("Admin CQ queue", Memory::Region::Access::ReadWrite, m_rw_dma_page));