mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 20:52:45 +00:00
e99fafb683
Add a basic NVMe driver support to serenity based on NVMe spec 1.4. The driver can support multiple NVMe drives (subsystems). But in a NVMe drive, the driver can support one controller with multiple namespaces. Each core will get a separate NVMe Queue. As the system lacks MSI support, PIN based interrupts are used for IO. Tested the NVMe support by replacing IDE driver with the NVMe driver :^)
36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
/*
|
|
* Copyright (c) 2021, Pankaj R <pankydev8@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "AK/kmalloc.h"
|
|
#include <AK/NonnullRefPtr.h>
|
|
#include <AK/NonnullRefPtrVector.h>
|
|
#include <AK/OwnPtr.h>
|
|
#include <AK/RefCounted.h>
|
|
#include <AK/RefPtr.h>
|
|
#include <AK/Types.h>
|
|
#include <Kernel/Locking/Spinlock.h>
|
|
#include <Kernel/Storage/NVMe/NVMeDefinitions.h>
|
|
#include <Kernel/Storage/NVMe/NVMeQueue.h>
|
|
#include <Kernel/Storage/StorageDevice.h>
|
|
|
|
namespace Kernel {
|
|
class NVMeNameSpace : public StorageDevice {
|
|
|
|
public:
|
|
static ErrorOr<NonnullRefPtr<NVMeNameSpace>> try_create(NonnullRefPtrVector<NVMeQueue> queues, u8 controller_id, u16 nsid, size_t storage_size, size_t lba_size);
|
|
explicit NVMeNameSpace(NonnullRefPtrVector<NVMeQueue> queues, size_t storage_size, size_t lba_size, size_t major_number, size_t minor_number, u16 nsid, NonnullOwnPtr<KString> early_device_name);
|
|
|
|
CommandSet command_set() const override { return CommandSet::NVMe; };
|
|
void start_request(AsyncBlockDeviceRequest& request) override;
|
|
|
|
private:
|
|
u16 m_nsid;
|
|
NonnullRefPtrVector<NVMeQueue> m_queues;
|
|
};
|
|
|
|
}
|