[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: PCI Driver



I am trying to write kernel level driver.
If i understand right, i should use ioctl function to access my driver 
from user space. Actually  copy_to_user() and copy_from_user() is the 
prototype get_user() and put_user?

thanks



Sumit Agarwal wrote:

>Are u writing a user level driver or a kernel level driver?
>
>To have an access to the actual devices, you always need a
>kernel agent, otherwise you would be violating the
>protection law on the i386 architecture.
>
>You can use PCI function calls being in kernel only.
>
>To understand data interaction between kernel & user space
>explore copy_to_user() and copy_from_user()
>
>Thanks,
>Sumit
>



--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive:       http://mail.nl.linux.org/kernelnewbies/
FAQ:           http://kernelnewbies.org/faq/