Re: SATA PMP and ATAPI - apparently not working, is it supposed to?

[Reinoud Zandijk <reinoud%NetBSD.org@localhost>]

Hi,

On Wed, Jun 28, 2017 at 09:07:18PM +0200, Jarom?r Dole?ek wrote:
> during my testing on jdolecek-ncq branch, I found that when I attach the
> ATAPI device via a port multiplier, the device is never actually detected.
> The behaviour I see is that atapibus is detected on the port, but not the
> actual device cd1, like this:

I have the exactly the same issue on my Marvell ARM board with mvsata. It does
detect and attach a 2nd harddisc after a SATA port multiplier if I attach one
but always fails to attach the DVD burner present:

mvsata0 at mvsoc0 unit 0 offset 0x80000-0x87fff irq 21: Marvell Serial-ATA
Host Controller (SATAHC)
mvsata0: GenIIe, 1hc, 2port/hc
atabus0 at mvsata0 channel 0
atabus1 at mvsata0 channel 1
...
ata0 port 1: device present, speed: 3.0Gb/s
atabus1: SATA port multiplier, 4 ports
atabus1: vendor 0x11ab, product 0x4140, revision 1.1, level 193
atabus1 PMP port 0: device present, speed: 3.0Gb/s
atabus1 PMP port 2: device present, speed: 1.5Gb/s
atapibus0 at atabus1: 2 targets
wd0 at atabus1 drive 0
...

The DVD burner on port 2 is never found. Curiously it detects two targets on
the atapibus0, so I presume those are the two devices? One being the SSD and
the other the DVD burner?

> This behaviour is same on kernel from HEAD sources and my ncq branch.

I can confirm that. I tried a new HEAD kernel on the machine and it still
fails to recognize the DVD burner. FYI, it never detected it as long as I have
this machine.

With regards,
Reinoud