Linuxdd[1]

Preview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

User program & Kernel interface Note: This picture is excerpted from Write a Linux Hardware Device Driver, Andrew O’Shauqhnessy, Unix world

Linux Device Drivers ,[object Object],[object Object],[object Object],[object Object]

Loadable Kernel Module (LKM) ,[object Object],[object Object],[object Object]

Types of LKM ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Basic LKM (program) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

LKM Utilities cmd ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Common LKM util cmd ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Linux Device Drivers (continued) ,[object Object],[object Object],[object Object]

General implementation steps ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Read/write (I/O) ,[object Object],[object Object]

Device Driver interface Note: This picture is excerpted from Write a Linux Hardware Device Driver, Andrew O’Shauqhnessy, Unix world

VSF & Major number ,[object Object]

File operation structure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Watch out compatibility issue with Linux version ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Device special file ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Register and unregister device ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Register and unregister device ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Device Driver Types ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Implementation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

kernel functions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

kernel functions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Kerenel funcs contd… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Pitfalls ,[object Object],[object Object],[object Object]

Resources ,[object Object],[object Object],[object Object]

Linuxdd[1]

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