Module manager

Device Manager Module

This module provides functionality for managing hardware devices in the kernel.

Overview

The device manager is responsible for:

• Tracking available device drivers with priority-based initialization
• Device discovery and initialization through FDT
• Managing device information and lifecycle

Key Components

• DeviceManager: The main device management system that handles all devices and drivers
• DriverPriority: Priority levels for controlling driver initialization order

Device Discovery

Devices are discovered through the Flattened Device Tree (FDT). The manager:

1. Parses the device tree
2. Matches compatible devices with registered drivers based on priority
3. Probes devices with appropriate drivers in priority order

Usage

The device manager is implemented as a global singleton that can be accessed via:

• DeviceManager::get_manager() - Immutable access
• DeviceManager::get_mut_manager() - Mutable access

Example: Registering a device driver

use crate::device::manager::{DeviceManager, DriverPriority};
 
// Create a new device driver
let my_driver = Box::new(MyDeviceDriver::new());
 
// Register with the device manager at Core priority
DeviceManager::get_mut_manager().register_driver(my_driver, DriverPriority::Core);

Structs

DeviceManager

DeviceManager

Enums

DriverPriority

Driver priority levels for initialization order

Statics

MANAGER 🔒

Type Aliases

SharedDevice

Simplified shared device type