On Fri, 2008-12-12 at 10:49 -0600, Ayman El-Khashab wrote: > I am using the ppc460ex as an endpoint and I see that the mentioned > function setups a 32Mb > window at address 0 in sdram. what i want is some memory that the > host can read/write to. > But the 32Mb that are already mapped at the bottom of ram, so it would > not be good do writes > to those addresses. Am I missing something? My driver right now is > not touching the PIM > registers. > > So is the right way to do this to change the PIM registers after I get > a buffer in the kernel -- or > something else? > > How would I make sure that it was aligned on a 32Mb boundry per the > 44x requirements?
either that or just allocate some memory and expose the 32MB region that contains that memory... There isn't really much existing code to support endpoint mode. IE, the code in ppc4xx_pci.c is really mostly host oriented, so it's up to you to define what you want here. We have no API defined for drivers to use etc.. Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
