Hi Helge, On Fri, May 24, 2019 at 09:58:30PM +0200, Helge Deller wrote: > > I did the patch below to check for legacy IO Adapters. Is HW_BCPORT the right > > type? On my C240 both GSC Adapters are HW_BCPORT. > > I'm not sure. > Seems to be dependend on the CPU. > See comment in drivers/parisc/ccio-dma.c, line 607ff: > > /* FIXME: PCX_W platforms don't need FDC/SYNC. (eg C360) > ** PCX-U/U+ do. (eg C200/C240) > ** PCX-T'? Don't know. (eg C110 or similar K-class) > ** > ** See PDC_MODEL/option 0/SW_CAP word for "Non-coherent IO-PDIR bit". > ** > ** "Since PCX-U employs an offset hash that is incompatible with > ** the real mode coherence index generation of U2, the PDIR entry > ** must be flushed to memory to retain coherence." > > > Can you try this patch instead? > [..] Works on my C240 and C3750. Thanks! Regards Sven
