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NVMe: Add a new struct Doorbell to encapsulate doorbell registers

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Introduce a new Struct Doorbell that encapsulates the mmio doorbell
register.

This commit does not introduce any functional changes and it is added
in preparation to adding shadow doorbell support.
This commit is contained in:
Pankaj Raghav 2023-08-02 12:37:52 +02:00 • committed by Jelle Raaijmakers
parent 934afcb9d5
commit 5b774f3617
7 changed files with 29 additions and 17 deletions
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4
Kernel/Devices/Storage/NVMe/NVMePollQueue.h
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@ -12,12 +12,12 @@ namespace Kernel {
class NVMePollQueue : public NVMeQueue {
public:
static ErrorOr<NonnullLockRefPtr<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);
static ErrorOr<NonnullLockRefPtr<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, Doorbell db_regs);
void submit_sqe(NVMeSubmission& submission) override;
virtual ~NVMePollQueue() override {};
protected:
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);
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, Doorbell db_regs);
private:
virtual void complete_current_request(u16 cmdid, u16 status) override;