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Kernel: Make map_typed() & map_typed_writable() fallible using ErrorOr

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This mostly just moved the problem, as a lot of the callers are not
capable of propagating the errors themselves, but it's a step in the
right direction.
This commit is contained in:
Idan Horowitz 2022-01-13 18:20:22 +02:00 • committed by Andreas Kling
parent e2e5d4da16
commit fb3e46e930
14 changed files with 80 additions and 57 deletions
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6
Kernel/Storage/NVMe/NVMeController.cpp
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@ -45,7 +45,7 @@ ErrorOr<void> NVMeController::initialize()
// Map only until doorbell register for the controller
// Queues will individually map the doorbell register respectively
m_controller_regs = Memory::map_typed_writable<volatile ControllerRegister>(PhysicalAddress(m_bar));
m_controller_regs = TRY(Memory::map_typed_writable<volatile ControllerRegister>(PhysicalAddress(m_bar)));
calculate_doorbell_stride();
TRY(create_admin_queue(irq));
@ -250,7 +250,7 @@ ErrorOr<void> NVMeController::create_admin_queue(u8 irq)
auto buffer = TRY(MM.allocate_dma_buffer_pages(sq_size, "Admin SQ queue", Memory::Region::Access::ReadWrite, sq_dma_pages));
sq_dma_region = move(buffer);
}
auto doorbell_regs = Memory::map_typed_writable<volatile DoorbellRegister>(PhysicalAddress(m_bar + REG_SQ0TDBL_START));
auto doorbell_regs = TRY(Memory::map_typed_writable<volatile DoorbellRegister>(PhysicalAddress(m_bar + REG_SQ0TDBL_START)));
m_admin_queue = TRY(NVMeQueue::try_create(0, irq, qdepth, move(cq_dma_region), cq_dma_pages, move(sq_dma_region), sq_dma_pages, move(doorbell_regs)));
@ -317,7 +317,7 @@ ErrorOr<void> NVMeController::create_io_queue(u8 irq, u8 qid)
}
auto queue_doorbell_offset = REG_SQ0TDBL_START + ((2 * qid) * (4 << m_dbl_stride));
auto doorbell_regs = Memory::map_typed_writable<volatile DoorbellRegister>(PhysicalAddress(m_bar + queue_doorbell_offset));
auto doorbell_regs = TRY(Memory::map_typed_writable<volatile DoorbellRegister>(PhysicalAddress(m_bar + queue_doorbell_offset)));
m_queues.append(TRY(NVMeQueue::try_create(qid, irq, IO_QUEUE_SIZE, move(cq_dma_region), cq_dma_pages, move(sq_dma_region), sq_dma_pages, move(doorbell_regs))));
m_queues.last().enable_interrupts();