[Fwd: reduce ioremap memory size for Adaptec I2O controllers]

Alan Cox alan at redhat.com
Mon Sep 20 12:18:08 UTC 2004


On Sun, Sep 19, 2004 at 07:21:18PM -1000, Warren Togami wrote:
> http://kerneltrap.org/node/view/3848
> "Linux: Understanding The Stricter Type Checks for PCI memory mapping"
> "The solution provided involves a new interface called 'iomap', 
> extending the earlier 'ioremap' function to properly work for both PIO 
> (programmed input/output) and MMIO"...
> 
> What are the possible implications of this for usage of ioremap in i2o?

None unless Markus chooses to use it. The iomap stuff is a new way of doing
I/O stuff (and some of it like pci_iomap is a much nicer API). Its big win
is it allows sparse to do type checking for things like PCI accesses





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