What is ata2 ?

[Kent Stewart]

On Tuesday 26 April 2005 08:13 pm, Rob Bowers wrote:
> I'm real new to the FreeBSD world so I might be way off on this.
>
> Any chance it's an IDE controller on a soundcard? Probably ISA by
> what i'm reading below.

Some of the motherboards have 4 IDE controllers. The last 2 are 
frequently RAIDable. Now I see 2 IDE and a SATA. I haven't purchased 
one of the SATA's. 

IIRC, the high rate ATA's want one HD per controller. That is how my 
systems are configured.

Kent

>
> R. Bowers
>
> Rob wrote:
> >Joel wrote:
> >>On Tue, 26 Apr 2005 18:44:18 -0700 (PDT)
> >>Rob <spamrefuse at yahoo.com> wrote
> >>
> >>>I'm running FreeBSD on a range of PCs, from
> >>>Pentium-1 (60 MHz) to Pentium-4 (2.60GHz), though
> >>>none but one has a 'ata2' line in the dmesg output:
> >>>
> >>>ata0: channel #0 on atapci0
> >>>ata1: channel #1 on atapci0
> >>>...
> >>>ata2: <Generic ESDI/IDE/ATA controller> at port
> >>>      0x36e-0x36f,0x168-0x16f irq 10 on isa0
> >>>ad0: 6149MB <QUANTUM FIREBALL EX6.4A/A0A.0D00>
> >>>     [13328/15/63] at ata0-master UDMA33
> >>>ad1: 4892MB <QUANTUM FIREBALL EL5.1A/A08.1100>
> >>>     [10602/15/63] at ata0-slave UDMA33
> >>>acd0: CDROM <GCR-8521B/1.02> at ata1-master PIO4
> >>>
> >>>What is so special about this particular PC, that
> >>>it has an ata2, unlike all other PCs I have?
> >>>
> >>>Can I add more than 4 disks (2 masters + 2 slaves)
> >>>to this PC? Or is this ata2 for something else?
> >>
> >>From here, with the limited information you've
> >>provided, I'm guessing you can, if you have the
> >>cables and the spare power connectors.
> >
> >I'm quite keen on trying to understand this.
> >So let me try to provide more information below.
> >
> >As above lines show, the ata2 controller is on
> >interrupt 10:
> >
> > # vmstat -i
> > interrupt                          total       rate
> > irq0: clk                       10392173        100
> > irq1: atkbd0                           1          0
> > irq3: sio1                           219          0
> > irq4: sio0                             1          0
> > irq8: rtc                       13301014        128
> > irq11: rl0 uhci0                  187119          1
> > irq13: npx0                            1          0
> > irq14: ata0                       491426          4
> > irq15: ata1                           46          0
> > Total                           24372000        234
> >
> >But interrupt 10 is not there !?!
> >
> > # atacontrol list
> > ATA channel 0:
> >    Master:  ad0 <QUANTUM FIREBALL EX6.4A/A0A.0D00>
> >             ATA/ATAPI revision 4
> >    Slave:   ad1 <QUANTUM FIREBALL EL5.1A/A08.1100>
> >             ATA/ATAPI revision 4
> > ATA channel 1:
> >    Master: acd0 <GCR-8521B/1.02> ATA/ATAPI revision 0
> >    Slave:       no device present
> > ATA channel 2:
> >    Master:      no device present
> >    Slave:       no device present
> >
> >----------------------
> >
> >You also mentioned USB possibility:
> > # grep -i usb /var/run/dmesg.boot
> > uhci0: <Intel 82371AB/EB (PIIX4) USB controller>
> >     port 0xe000-0xe01f irq 11 at device 7.2 on pci0
> > usb0: <Intel 82371AB/EB (PIIX4) USB controller>
> >     on uhci0
> > usb0: USB revision 1.0
> >
> >
> >What would you conclude from this?
> >Is this ata2 another IDE controller, so that I can
> >add 6 (instead of the normal 4) harddisks/cdroms etc.
> >to this computer?
> >
> >Thanks,
> >Rob.
> >
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-- 
Kent Stewart
Richland, WA

http://users.owt.com/kstewart/index.html