It seems David Gilbert wrote:
> I've got a promise ATA-66 controller. According to it's bios screen,
> the hard drives attached to it are UDMA-4 and the two CD-type devices
> are UDMA-2. All four devices are attached with ATA-66 cabling. I
> also have "hw.ata.atapi_dma=1" in loader.conf.
>
> I get the following probe:
>
> ad6: 39266MB <IBM-DTLA-305040> [79780/16/63] at ata3-master UDMA66
> ad7: 39266MB <IBM-DTLA-305040> [79780/16/63] at ata3-slave UDMA66
> acd0: DVD-ROM <TOSHIBA DVD-ROM SD-M1502> at ata2-master using PIO4
> acd1: CD-RW <CD-W512EB> at ata2-slave using PIO4
>
> Is the driver possibly not recognising the UDMA2 state from the
> controller?
The Promise controllers doesn't support ATAPI DMA, or at least
the older ones didn't, and some require special code, however
the newer ones (TX2) should support it. I have this on my list
for the newer Promises, watch -current for when it hits the tree...
-S�ren
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