multiple issues with devstat_*(9)

[Alexander Motin]

Alexander Best wrote:
> On Mon Apr 11 11, Alexander Motin wrote:
>> Alexander Best wrote:
>>> my cd0 is a pata atapi dvdrom drive and i have the following in my kernel conf:
>>>
>>> device          atacore
>>> device          ahci
>>> device          atajmicron
>>> device          atapci
>>> #device         atapicd
>>> device          atapicam
>>>
>>> device          umass
>>> device          scbus
>>> device          cd
>>> device          pass
>>> device          da
>>> device          random
>>> device          pty
>>> device          md
>>>
>>> the dmesg entries for cd0 are:
>>>
>>> cam_periph_alloc: attempt to re-allocate valid device cd0 rejected
>>> cdasync: Unable to attach new device due to status 0x6
>>> cd0 at ata2 bus 0 scbus8 target 0 lun 0
>>> cd0: <HL-DT-ST DVDRAM GSA-H10N JL12> Removable CD-ROM SCSI-0 device 
>>> cd0: 3.300MB/s transfers
>>> cd0: cd present [2149024 x 2048 byte records]
>> Aha, that's it. It is atapicam's lie. atapicam is one of a things that
>> will go away during migration to CAM ATA. If you remove `device
>> atapicam`, but add `options ATA_CAM` instead, CAM will manage that bus
>> directly and report it as ATA.
> 
> thanks for the hint. i also read the following in the ahci(4) man page:
> 
> "     Driver features include support for Serial ATA and ATAPI devices, ..."
> 
> ...does that mean that my DVD drive can also attach to the ahci driver?

If it is SATA and you connect it to AHCI controller -- yes, it will work
with ahci(4) controller driver.

-- 
Alexander Motin