mirror of
https://github.com/RGBCube/serenity
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ac161f6a8d
NVMe{Poll|Interrupt}Queue don't have a try_create() method. Add one to
keep it consistent with how we create objects. Also this commit is in
preparation to moving any initialization related code out of the
constructor.
67 lines
2.6 KiB
C++
67 lines
2.6 KiB
C++
/*
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* Copyright (c) 2022, Pankaj R <pankydev8@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Arch/Delay.h>
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#include <Kernel/Devices/BlockDevice.h>
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#include <Kernel/Storage/NVMe/NVMeDefinitions.h>
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#include <Kernel/Storage/NVMe/NVMePollQueue.h>
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namespace Kernel {
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ErrorOr<NonnullLockRefPtr<NVMePollQueue>> NVMePollQueue::try_create(NonnullOwnPtr<Memory::Region> rw_dma_region, NonnullRefPtr<Memory::PhysicalPage> rw_dma_page, u16 qid, u32 q_depth, OwnPtr<Memory::Region> cq_dma_region, OwnPtr<Memory::Region> sq_dma_region, Memory::TypedMapping<DoorbellRegister volatile> db_regs)
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{
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return TRY(adopt_nonnull_lock_ref_or_enomem(new (nothrow) NVMePollQueue(move(rw_dma_region), rw_dma_page, qid, q_depth, move(cq_dma_region), move(sq_dma_region), move(db_regs))));
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}
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UNMAP_AFTER_INIT NVMePollQueue::NVMePollQueue(NonnullOwnPtr<Memory::Region> rw_dma_region, NonnullRefPtr<Memory::PhysicalPage> rw_dma_page, u16 qid, u32 q_depth, OwnPtr<Memory::Region> cq_dma_region, OwnPtr<Memory::Region> sq_dma_region, Memory::TypedMapping<DoorbellRegister volatile> db_regs)
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: NVMeQueue(move(rw_dma_region), rw_dma_page, qid, q_depth, move(cq_dma_region), move(sq_dma_region), move(db_regs))
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{
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}
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void NVMePollQueue::submit_sqe(NVMeSubmission& sub)
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{
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NVMeQueue::submit_sqe(sub);
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SpinlockLocker lock_cq(m_cq_lock);
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while (!process_cq()) {
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microseconds_delay(1);
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}
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}
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void NVMePollQueue::complete_current_request(u16 cmdid, u16 status)
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{
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SpinlockLocker lock(m_request_lock);
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auto& request_pdu = m_requests.get(cmdid).release_value();
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auto current_request = request_pdu.request;
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AsyncDeviceRequest::RequestResult req_result = AsyncDeviceRequest::Success;
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ScopeGuard guard = [req_result, status, &request_pdu] {
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if (request_pdu.request)
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request_pdu.request->complete(req_result);
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if (request_pdu.end_io_handler)
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request_pdu.end_io_handler(status);
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request_pdu.used = false;
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};
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// There can be submission without any request associated with it such as with
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// admin queue commands during init. If there is no request, we are done
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if (!current_request)
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return;
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if (status) {
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req_result = AsyncBlockDeviceRequest::Failure;
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return;
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}
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if (current_request->request_type() == AsyncBlockDeviceRequest::RequestType::Read) {
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if (auto result = current_request->write_to_buffer(current_request->buffer(), m_rw_dma_region->vaddr().as_ptr(), current_request->buffer_size()); result.is_error()) {
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req_result = AsyncBlockDeviceRequest::MemoryFault;
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return;
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}
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}
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return;
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}
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}
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