How to write a device driver in such a fashion .????

Misbah khan misbah_khan at
Tue Jan 8 15:31:10 EST 2008

using mmap() in application to access the h/w is only possible if  the device
memory is mapped in the kernel virtual memory how come we directly map to
the physical memory to virtual from user space ??? 


Misbah khan wrote:
> Hi all ....
> I need your suggession to write a driver with such requirements :-
> On Initiation by the application of which key is pressed driver should
> perform the task accordingly. There are 7 keys so seven different task the
> driver will perform. 
> 1 . I do not want to use any entry point such as read/write/ioctl. In such
> a case how to access the driver.
> 2. We dont want to implement this as a chracrter driver.
> 3. The driver shall look pretty much like an application where in
> asscssing the H/W memory map .
> Hence no entry point and no registeration but an application could be able
> to communicate ....
> I need your suggession in this regard .....
> -----Misbah  

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