> Here's a slightly modified hack, which should leave your SATA > drive working as well as the CF card. > > Tejun / Alan : do we really want to continue attempting mdma2 > on a modern chipset such as ICH8 ??? > > The best mdma2 can do is the same throughput as pio4, > and the bus occupancy is so high for mdma2 that it really > probably isn't worthwhile -- only CF cards seem to use it > in modern systems anyway. > > Signed-off-by: Mark Lord <mlord@xxxxxxxxx> > --- > --- linux/drivers/ata/ata_piix.c.orig 2007-06-10 18:58:27.000000000 > -0400 > +++ linux/drivers/ata/ata_piix.c 2007-06-28 21:09:04.000000000 -0400 > @@ -537,7 +537,7 @@ > .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR | > PIIX_FLAG_AHCI, > .pio_mask = 0x1f, /* pio0-4 */ > - .mwdma_mask = 0x07, /* mwdma0-2 */ > + .mwdma_mask = 0x00, /* mwdma0-2 */ > .udma_mask = 0x7f, /* udma0-6 */ > .port_ops = &piix_sata_ops, > }, That worked a treat! CF is flagged as PIO4 and HDD is now UDMA. I can't tell you how grateful I am that you were able to point out the fix / modification but I can certainly now sleep a bit easier. Furthermore, if there is anything else I can do or would like me to test while we have this type of hardware, please let me know. Thanks again, Mark.. - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
