On Wed, 2009-01-07 at 21:59 +0100, diba...@libero.it wrote: > Hi all, > > I'm using a linux 2.6.19 (from Denx ELDK) on a PPC MPC880. In a driver > (that uses TDM channels) I have some calls to __pa to get the physical > address corresponding to a virtual address. The physical address > returned by __pa is higher than the maximum physical memory I have on > the board. This result make my driver hang. The driver I'm trying to > use was written for a 2.4 kernel and I'm wondering if I have to > replace the calls to __pa with some other API/MACRO.
__pa can only be used on memory coming from the kernel linear mapping. You probably need to change your driver to use the proper DMA mapping APIs instead Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
