> There are errata for config space and posting in some chipsets and as you > says its slow. The 400nS command writing bit applies too - they chipsets are > not that smart in my experience. Ok, I've start doing it, however, reset is the only case I've found. Currently libata does the 400ns thingy in the inline ata_pause() which unconditionally does ata_altstatus(); ndelay(400); (and thus does it on PIO, MMIO, anything ...). Do you want me to change that to use the MMIO flush hook as well ? If we're going to do that, we probably need to be careful to have everybody have a properly populated MMIO flush hook as there might be current drivers (especially SATA) who rely on this. Jeff ? Cheers, Ben. - 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
