George Anzinger wrote:
>
> Is there any way a linux user app can be given direct access to
> hardware? For example:
> * a simple driver is loaded.
> * the user land app sends an ioctl() to the driver.
> * the driver returns the beginning physical address of the pci device
> we're interested in.
> * the user app calls something like "ioremap" to memory map the
> registers of that device into its own space in order to be able to
> directly do memory cycles to the device.
>
> Thanks,
Do the ioremap in kernel space, then use mmap to export the registers to
user space. An example of this is Device3Dfx, found at
http://linux.3dfx.com/open_source/download/voodoo3_banshee.htm
--Brian Gerst
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This archive was generated by hypermail 2b29 : Sun Jul 23 2000 - 21:00:11 EST