mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 15:32:46 +00:00
82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2021, Pankaj R <pankydev8@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/NonnullRefPtr.h>
|
|
#include <AK/NonnullRefPtrVector.h>
|
|
#include <AK/OwnPtr.h>
|
|
#include <AK/RefPtr.h>
|
|
#include <AK/Time.h>
|
|
#include <AK/Tuple.h>
|
|
#include <AK/Types.h>
|
|
#include <Kernel/Bus/PCI/Device.h>
|
|
#include <Kernel/Locking/Spinlock.h>
|
|
#include <Kernel/Memory/TypedMapping.h>
|
|
#include <Kernel/Storage/NVMe/NVMeDefinitions.h>
|
|
#include <Kernel/Storage/NVMe/NVMeNameSpace.h>
|
|
#include <Kernel/Storage/NVMe/NVMeQueue.h>
|
|
#include <Kernel/Storage/StorageController.h>
|
|
|
|
namespace Kernel {
|
|
|
|
class NVMeController : public PCI::Device
|
|
, public StorageController {
|
|
public:
|
|
static ErrorOr<NonnullRefPtr<NVMeController>> try_initialize(PCI::DeviceIdentifier const&, bool is_queue_polled);
|
|
ErrorOr<void> initialize(bool is_queue_polled);
|
|
explicit NVMeController(PCI::DeviceIdentifier const&);
|
|
RefPtr<StorageDevice> device(u32 index) const override;
|
|
size_t devices_count() const override;
|
|
|
|
protected:
|
|
bool reset() override;
|
|
bool shutdown() override;
|
|
void complete_current_request(AsyncDeviceRequest::RequestResult result) override;
|
|
|
|
public:
|
|
bool reset_controller();
|
|
bool start_controller();
|
|
u32 get_admin_q_dept();
|
|
|
|
u16 submit_admin_command(NVMeSubmission& sub, bool sync = false)
|
|
{
|
|
// First queue is always the admin queue
|
|
if (sync) {
|
|
return m_admin_queue->submit_sync_sqe(sub);
|
|
}
|
|
m_admin_queue->submit_sqe(sub);
|
|
return 0;
|
|
}
|
|
|
|
bool is_admin_queue_ready() { return m_admin_queue_ready; };
|
|
void set_admin_queue_ready_flag() { m_admin_queue_ready = true; };
|
|
|
|
private:
|
|
ErrorOr<void> identify_and_init_namespaces();
|
|
Tuple<u64, u8> get_ns_features(IdentifyNamespace& identify_data_struct);
|
|
ErrorOr<void> create_admin_queue(Optional<u8> irq);
|
|
ErrorOr<void> create_io_queue(u8 qid, Optional<u8> irq);
|
|
void calculate_doorbell_stride()
|
|
{
|
|
m_dbl_stride = (m_controller_regs->cap >> CAP_DBL_SHIFT) & CAP_DBL_MASK;
|
|
}
|
|
bool wait_for_ready(bool);
|
|
|
|
private:
|
|
PCI::DeviceIdentifier m_pci_device_id;
|
|
RefPtr<NVMeQueue> m_admin_queue;
|
|
NonnullRefPtrVector<NVMeQueue> m_queues;
|
|
NonnullRefPtrVector<NVMeNameSpace> m_namespaces;
|
|
Memory::TypedMapping<volatile ControllerRegister> m_controller_regs;
|
|
bool m_admin_queue_ready { false };
|
|
size_t m_device_count { 0 };
|
|
AK::Time m_ready_timeout;
|
|
u32 m_bar { 0 };
|
|
u8 m_dbl_stride { 0 };
|
|
static Atomic<u8> controller_id;
|
|
};
|
|
}
|