Mark Lord wrote: > Are you really sure that the old IDE is actually issuing DMA commands, > rather than falling back to PIO ? Yeap, pretty sure. Here is debug dump of IDE transferring sector zero. [ 114.377898] XXX writing 0x8 to dma_cmd [ 114.381718] XXX read dma_stat 0x24 and writing 0x26 [ 114.386638] XXX writing feat=0x1 ireason=0 sector=0 cntl=0x0 cnth=0x80 ctrl=0x8 [ 114.393991] XXX executing WIN_PACKETCMD [ 114.397878] XXX CDB 28 00 00 00 00 00 00 00 01 00 00 00 [ 114.403899] XXX writing 0x8 | 1 to dma_command -- tejun - 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
