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Date:      Tue, 20 Feb 2007 11:25:44 -0500
From:      John Baldwin <jhb@freebsd.org>
To:        freebsd-alpha@freebsd.org
Cc:        Francisco =?iso-8859-15?q?Jos=E9_Nina_Rente?= <rastejante@gmail.com>
Subject:   Re: alphaserver 2100 5/250 with promise pci ide controlor
Message-ID:  <200702201125.44395.jhb@freebsd.org>
In-Reply-To: <6FFE9846-5BCA-4A88-8EBD-5E047240C507@gmail.com>
References:  <6FFE9846-5BCA-4A88-8EBD-5E047240C507@gmail.com>

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On Monday 19 February 2007 12:11, Francisco Jos=E9 Nina Rente wrote:
> Hi all,
>=20
> I'm trying to install FreeBSD 6.2 with GENERIC on a alphaserver 2100 =20
> 5/250 with a promise pdc20269 ide controller.
> The objective it's to use one of the scsi disk on the system to boot =20
> and have the rest of the OS on the to ide disks in RAID 1.
> My Problem is:
>=20
> 1- When i boot the freebsd cd normally i get this messages:
>=20
> ad0: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D0
> ad0: TIMEOUT - READ_DMA retrying (0 retries left) LBA=3D0
> ad0: FAILURE - READ_DMA timed out LBA=3D0
> ad1: TIMEOUT - READ_DMA retrying (1 retry left) LBA=3D0
> ad1: TIMEOUT - READ_DMA retrying (0 retries left) LBA=3D0
> ad1: FAILURE - READ_DMA timed out LBA=3D0
>=20
> And i can eaven see the disk geometry in the label tool of sysinstall.
>=20
> 2 - If i set hw.ata.ata_dma=3D0 on the boot, the messages disappears. =20
> If i switch from mode PIO4 to udma33 or udma66 with atacontrol there =20
> is no problem, at leas i can label the disk normally,
> But in this case only one of the disk can be accessed, only ad0! =20
> Because if i try to use disklabel on ad1 the above message appear again!
> If i change to udma100 (the maximum that is supported by the two =20
> disks) the same message appears.
>=20
> 3- I boot with set hw.ata.ata_dma=3D0 and i change to udma66, when i =20
> start the installation i get a panic.
>=20
>=20
> I don't want to use less then udma66, of course :(
> I already try various cable (all 80 conductor cable ).
> When i try to use the same promise pdc20269 ide controller in a =20
> regular x86 box it works normally.
>=20
> Another question what i need to do to force udma66 on boot?

ATA DMA doesn't really work on alpha unfortunately.

=2D-=20
John Baldwin



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