Hello, How can i have a direct access to a register (isa or pci) in user mode without developp a module. for io bus isa i think it is "ioperm" ( but for PCI i know the real hard register address )
direct access to register
Jan 17, 2005
2 Replies
The PCI registers are so high in address space that the ioperm() call cannot grant access to them, you need a kernel mode driver.
Tauno Voipio
tauno voipio (at) iki fi
In simple cases, one can simply mmap /dev/mem instead of writing a device specific kernel space driver (and mmap fop).
-Matt
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