The Linux Device Drivers course provides engineers with a fast, cost-effective way to acquire the skills necessary to develop, deploy, and debug their own customized Linux device drivers.
Day 1
Introduction to Linux Device Drivers
- Linux architecture overview
- Linux device driver overview
- Device driver types
- Linux device model
- In-tree vs. out-of-tree driver development
Linux Kernel Source Code
- Source code organization
- The kernel configurator
- The kernel build system
- Working with kernel patches
- LAB: Development environment
Introduction to Linux Kernel Modules
- Anatomy of a kernel module
- Module licensing
- Building modules
- Managing modules
- Module parameters
- LAB: Kernel module
Character Device Drivers
- Driver life cycle
- Major and minor numbers
- Character driver entry points
- Blocking operations
- Controlling a device
- Querying read/write ability
- Restricting operations
- LAB: Character device driver
Day 2
Managing Memory in Linux Device Drivers
- How Linux manages memory
- Allocating memory with kmalloc()
- Page-based memory allocation
- Manipulating memory
- Memory mapped I/O
- Accessing user space memory
- Implementing the mmap operation
- LAB: Memory management
Concurrency in Linux Device Drivers
- Concurrency
- Race conditions
- Locking primitives
- Deadlock
- Atomic variables
- LAB: Concurrency management
Managing Time in Linux Device Drivers
- HZ
- Jiffies and Jiffies_64
- Delaying execution
- Deferring execution
- LAB: Time management
Day 3
Handling Interrupts in Linux Device Drivers
- How interrupts work
- IRQs
- Top half processing
- Bottom half processing
- LAB: Handling interrupts
Debugging Linux Device Drivers
- Debugging by printing
- Debugging by querying
- Debugging by observation
- Using a kernel debugger
- LAB: Debugging drivers
Linux TTY Device Drivers
- TTY architecture
- TTY driver life cycle
- TTY driver entry points
- Line settings
- struct tty_struct
- LAB: Using TTY core
Linux PCI Device Drivers
- PCI configuration space
- Identifying devices
- Matching devices and drivers
- Driver registration
- Probe() function
- Memory and I/O regions
- DMA
- Remove() function
- LAB: Using PCI core
Day 4
Linux USB Device Drivers
- USB architecture
- Matching devices and drivers
- Driver registration
- Probe function
- Communicating with USB request blocks (URBs)
- Communicating without URBs
- LAB: Using USB core
Block Device Drivers
- Driver life cycle
- Major and minor numbers
- Block driver entry points
- Processing requests
- Controlling a device
- LAB: Block device driver
Linux Network Drivers
- Overview of network devices
- Driver registration
- Network driver entry points
- Controlling interfaces
- Packet transmission
- Interrupt-driven packet reception
- NAPI drivers
- LAB: Network device driver
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