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Kernel: Move DeviceManager to its own file

This commit is contained in:
Bananymous 2023-03-30 22:39:45 +03:00
parent b048630e5b
commit a3ba6da6f3
10 changed files with 178 additions and 157 deletions
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1
kernel/Makefile
View File

@ -42,6 +42,7 @@ kernel/build_libc.o \
kernel/CPUID.o \
kernel/Debug.o \
kernel/Device.o \
kernel/DeviceManager.o \
kernel/Font.o \
kernel/FS/Ext2.o \
kernel/FS/VirtualFileSystem.o \

52
kernel/include/kernel/Device.h
View File

@ -1,10 +1,7 @@
#pragma once
#include <BAN/StringView.h>
#include <BAN/Vector.h>
#include <kernel/FS/FileSystem.h>
#include <kernel/FS/Inode.h>
#include <kernel/SpinLock.h>
namespace Kernel
{
@ -47,53 +44,4 @@ namespace Kernel
virtual DeviceType device_type() const override { return DeviceType::CharacterDevice; }
};
class DeviceManager final : public FileSystem, public Inode
{
BAN_NON_COPYABLE(DeviceManager);
BAN_NON_MOVABLE(DeviceManager);
public:
static void initialize();
static DeviceManager& get();
void update();
void add_device(Device*);
virtual BAN::RefPtr<Inode> root_inode() override { return this; }
virtual InodeType inode_type() const override { return InodeType::Device; }
virtual BAN::StringView name() const override { return "device-manager"; }
virtual BAN::ErrorOr<BAN::RefPtr<Inode>> read_directory_inode(BAN::StringView) override;
virtual BAN::ErrorOr<BAN::Vector<BAN::String>> read_directory_entries(size_t) override;
private:
DeviceManager() = default;
private:
SpinLock m_lock;
BAN::Vector<Device*> m_devices;
friend class BAN::RefPtr<DeviceManager>;
public:
virtual ino_t ino() const override { return 0; }
virtual Mode mode() const override { return { Mode::IFDIR | Mode::IRUSR | Mode::IWUSR | Mode::IXUSR | Mode::IRGRP | Mode::IXGRP | Mode::IROTH | Mode::IXOTH }; }
virtual nlink_t nlink() const override { return 0; }
virtual uid_t uid() const override { return 0; }
virtual gid_t gid() const override { return 0; }
virtual off_t size() const override { return 0; }
virtual timespec atime() const override { return { 0, 0 }; }
virtual timespec mtime() const override { return { 0, 0 }; }
virtual timespec ctime() const override { return { 0, 0 }; }
virtual blksize_t blksize() const override { return 0; }
virtual blkcnt_t blocks() const override { return 0; }
virtual dev_t dev() const override { return 0x4900; }
virtual dev_t rdev() const override { return 0x7854; }
virtual BAN::ErrorOr<size_t> read(size_t, void*, size_t) { ASSERT_NOT_REACHED(); }
virtual BAN::ErrorOr<void> create_file(BAN::StringView, mode_t) { ASSERT_NOT_REACHED(); }
};
}

60
kernel/include/kernel/DeviceManager.h Normal file
View File

@ -0,0 +1,60 @@
#pragma once
#include <BAN/StringView.h>
#include <kernel/FS/FileSystem.h>
#include <kernel/Device.h>
#include <kernel/SpinLock.h>
namespace Kernel
{
class DeviceManager final : public FileSystem, public Inode
{
BAN_NON_COPYABLE(DeviceManager);
BAN_NON_MOVABLE(DeviceManager);
public:
static void initialize();
static DeviceManager& get();
void update();
void add_device(Device*);
virtual BAN::RefPtr<Inode> root_inode() override { return this; }
virtual InodeType inode_type() const override { return InodeType::Device; }
virtual BAN::StringView name() const override { return "device-manager"; }
virtual BAN::ErrorOr<BAN::RefPtr<Inode>> read_directory_inode(BAN::StringView) override;
virtual BAN::ErrorOr<BAN::Vector<BAN::String>> read_directory_entries(size_t) override;
private:
DeviceManager() = default;
private:
SpinLock m_lock;
BAN::Vector<Device*> m_devices;
friend class BAN::RefPtr<DeviceManager>;
public:
virtual ino_t ino() const override { return 0; }
virtual Mode mode() const override { return { Mode::IFDIR | Mode::IRUSR | Mode::IWUSR | Mode::IXUSR | Mode::IRGRP | Mode::IXGRP | Mode::IROTH | Mode::IXOTH }; }
virtual nlink_t nlink() const override { return 1; }
virtual uid_t uid() const override { return 0; }
virtual gid_t gid() const override { return 0; }
virtual off_t size() const override { return 0; }
virtual timespec atime() const override { return { 0, 0 }; }
virtual timespec mtime() const override { return { 0, 0 }; }
virtual timespec ctime() const override { return { 0, 0 }; }
virtual blksize_t blksize() const override { return 0; }
virtual blkcnt_t blocks() const override { return 0; }
virtual dev_t dev() const override { return 0x4900; }
virtual dev_t rdev() const override { return 0x7854; }
virtual BAN::ErrorOr<size_t> read(size_t, void*, size_t) { ASSERT_NOT_REACHED(); }
virtual BAN::ErrorOr<void> create_file(BAN::StringView, mode_t) { ASSERT_NOT_REACHED(); }
};
}

1
kernel/include/kernel/FS/Inode.h
View File

@ -2,6 +2,7 @@
#include <BAN/Memory.h>
#include <BAN/String.h>
#include <BAN/StringView.h>
#include <BAN/Vector.h>
#include <sys/types.h>

2
kernel/include/kernel/Storage/ATAController.h
View File

@ -1,6 +1,8 @@
#pragma once
#include <kernel/DeviceManager.h>
#include <kernel/PCI.h>
#include <kernel/SpinLock.h>
#include <kernel/Storage/StorageController.h>
namespace Kernel

103
kernel/kernel/Device.cpp
View File

@ -1,115 +1,12 @@
#include <BAN/Time.h>
#include <kernel/Device.h>
#include <kernel/LockGuard.h>
#include <kernel/PCI.h>
#include <kernel/Process.h>
#include <kernel/RTC.h>
#include <kernel/Storage/ATAController.h>
namespace Kernel
{
static DeviceManager* s_instance = nullptr;
Device::Device()
: m_create_time({ BAN::to_unix_time(RTC::get_current_time()), 0 })
{ }
void DeviceManager::initialize()
{
ASSERT(s_instance == nullptr);
s_instance = new DeviceManager;
ASSERT(s_instance != nullptr);
for (const auto& pci_device : PCI::get().devices())
{
switch (pci_device.class_code())
{
case 0x01:
{
StorageController* controller = nullptr;
switch (pci_device.subclass())
{
case 0x01:
if (auto res = ATAController::create(pci_device); res.is_error())
dprintln("{}", res.error());
else
controller = res.value();
break;
default:
dprintln("unsupported storage device (pci subclass {2H})", pci_device.subclass());
break;
}
if (controller)
{
s_instance->add_device(controller);
for (auto* device : controller->devices())
{
s_instance->add_device(device);
for (auto* partition : device->partitions())
s_instance->add_device(partition);
}
}
break;
}
default:
break;
}
}
MUST(Process::create_kernel(
[](void*)
{
while (true)
{
DeviceManager::get().update();
PIT::sleep(1);
}
}, nullptr)
);
}
DeviceManager& DeviceManager::get()
{
ASSERT(s_instance);
return *s_instance;
}
void DeviceManager::update()
{
LockGuard _(m_lock);
for (Device* device : m_devices)
device->update();
}
void DeviceManager::add_device(Device* device)
{
LockGuard _(m_lock);
MUST(m_devices.push_back(device));
}
BAN::ErrorOr<BAN::RefPtr<Inode>> DeviceManager::read_directory_inode(BAN::StringView name)
{
LockGuard _(m_lock);
for (Device* device : m_devices)
if (device->name() == name)
return BAN::RefPtr<Inode>(device);
return BAN::Error::from_errno(ENOENT);
}
BAN::ErrorOr<BAN::Vector<BAN::String>> DeviceManager::read_directory_entries(size_t index)
{
BAN::Vector<BAN::String> result;
if (index > 0)
return result;
LockGuard _(m_lock);
TRY(result.reserve(m_devices.size()));
for (Device* device : m_devices)
TRY(result.emplace_back(device->name()));
return result;
}
}

110
kernel/kernel/DeviceManager.cpp Normal file
View File

@ -0,0 +1,110 @@
#include <kernel/DeviceManager.h>
#include <kernel/LockGuard.h>
#include <kernel/PCI.h>
#include <kernel/Process.h>
#include <kernel/Storage/ATAController.h>
namespace Kernel
{
static DeviceManager* s_instance = nullptr;
void DeviceManager::initialize()
{
ASSERT(s_instance == nullptr);
s_instance = new DeviceManager;
ASSERT(s_instance != nullptr);
for (const auto& pci_device : PCI::get().devices())
{
switch (pci_device.class_code())
{
case 0x01:
{
StorageController* controller = nullptr;
switch (pci_device.subclass())
{
case 0x01:
if (auto res = ATAController::create(pci_device); res.is_error())
dprintln("{}", res.error());
else
controller = res.value();
break;
default:
dprintln("unsupported storage device (pci subclass {2H})", pci_device.subclass());
break;
}
if (controller)
{
s_instance->add_device(controller);
for (auto* device : controller->devices())
{
s_instance->add_device(device);
for (auto* partition : device->partitions())
s_instance->add_device(partition);
}
}
break;
}
default:
break;
}
}
MUST(Process::create_kernel(
[](void*)
{
while (true)
{
DeviceManager::get().update();
PIT::sleep(1);
}
}, nullptr)
);
}
DeviceManager& DeviceManager::get()
{
ASSERT(s_instance);
return *s_instance;
}
void DeviceManager::update()
{
LockGuard _(m_lock);
for (Device* device : m_devices)
device->update();
}
void DeviceManager::add_device(Device* device)
{
LockGuard _(m_lock);
MUST(m_devices.push_back(device));
}
BAN::ErrorOr<BAN::RefPtr<Inode>> DeviceManager::read_directory_inode(BAN::StringView name)
{
LockGuard _(m_lock);
for (Device* device : m_devices)
if (device->name() == name)
return BAN::RefPtr<Inode>(device);
return BAN::Error::from_errno(ENOENT);
}
BAN::ErrorOr<BAN::Vector<BAN::String>> DeviceManager::read_directory_entries(size_t index)
{
BAN::Vector<BAN::String> result;
if (index > 0)
return result;
LockGuard _(m_lock);
TRY(result.reserve(m_devices.size()));
for (Device* device : m_devices)
TRY(result.emplace_back(device->name()));
return result;
}
}

2
kernel/kernel/FS/VirtualFileSystem.cpp
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@ -1,6 +1,6 @@
#include <BAN/ScopeGuard.h>
#include <BAN/StringView.h>
#include <kernel/Device.h>
#include <kernel/DeviceManager.h>
#include <kernel/FS/Ext2.h>
#include <kernel/FS/VirtualFileSystem.h>
#include <kernel/LockGuard.h>

3
kernel/kernel/Input/PS2Controller.cpp
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@ -1,6 +1,7 @@
#include <BAN/Time.h>
#include <BAN/ScopeGuard.h>
#include <BAN/Time.h>
#include <kernel/ACPI.h>
#include <kernel/DeviceManager.h>
#include <kernel/IDT.h>
#include <kernel/Input/PS2Controller.h>
#include <kernel/Input/PS2Keyboard.h>

1
kernel/kernel/kernel.cpp
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@ -1,6 +1,7 @@
#include <kernel/ACPI.h>
#include <kernel/Arch.h>
#include <kernel/Debug.h>
#include <kernel/DeviceManager.h>
#include <kernel/FS/VirtualFileSystem.h>
#include <kernel/GDT.h>
#include <kernel/IDT.h>