Re: [Etherboot-developers] Question about ioremap

[<ebi...@ln...>]

ke...@us... (Ken Yap) writes:

> >I am working on the sundance driver.  It seems that the Linux driver is
> >written to use PCI memory space.  Does any one know whether it is possible
> >to use the ioaddr passed to the probe function?  
Please ignore it, and read the address from PCI configuration space.

> Do I need to do an ioremap?
No because etherboot does a 1-1 of physical to virtual addresses.
If etherboot goes cross platform we might need something like that but
we don't right now.

> >Is that even supported in the Etherboot code?  Any answers would help.
> 
> I think Eric Biederman fixed that aspect of Etherboot. Unless I'm
> mistaken, the address obtained from the PCI probe is just an address and
> doesn't necessarily mean I/O address anymore, despite the name. Ditto
> for membase. The e1000 driver also uses memory space I think.

Actually ioaddr is an io address, and membase is a memory address,
though if noone was using it membase may be totally removed.  No
changes have been made to their meaning except depricating them, which
is how I avoided breaking old drivers.   Feel free and encouraged to
ignore them.


Eric