Rick; I see now what you were writing about. The IPIF registers for controlling FIFO control (both xmit and rcv) are not accessible when a DMA mode is used, as is shown on page 26 of the plb_temac datasheet.
Examination of the drivers generated by the EDK show that a check for the presence of a DMA engine is done in xtemac.c to avoid incorrectly resetting a DMA-based plb_temac; whereas, the drivers for earlier versions of the plb_temac do not have this test. Looks like I will have to incorporate the drivers generated by the EDK8.2 into the linux tree. Do you know where I might get the file "gmii.h" referenced in adapter.c? -cy _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
