David, This is what I propose,
I propose a kmalloc_noncache and a kfree_noncached. These would be module and would be loaded when necessary. They would operate allocating say 16k (could be any size) of memory during boot time and then mapping it non cached. The the kmalloc_noncached routine would carve out little chucks of it and the free routine would release it. It would also have a noncached to real routine to return the real address of a noncached section. Does this sound interesting? Chip David Blythe wrote: > Ralph Blach wrote: > > > > David, > > > > Do you have USB working from on OHCI pci card? > > > > Would a kmalloc_nocache and kfree_cache be useful to you? > > > > Chip > > > > > > I think something more general then pci_alloc_consistent would be better > for devices that are not pci based. We are still working on getting a > pci OHCI usb to work with the walnut card and are running into a lot of > cache coherency problems. > david -- Ralph "Chip" Blach KF4WBK Chapel Hill, North Carolina -- Ralph "Chip" Blach KF4WBK Chapel Hill, North Carolina ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
