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Date:      Sun, 4 Mar 2001 12:39:14 -0800 (PST)
From:      Matthew Jacob <mjacob@feral.com>
To:        Soren Schmidt <sos@freebsd.dk>
Cc:        alpha@FreeBSD.ORG
Subject:   Ah! Source of ATA-alpha wierdness solved...
Message-ID:  <Pine.BSF.4.21.0103041229460.40449-100000@beppo.feral.com>
In-Reply-To: <Pine.BSF.4.21.0103041213220.40449-100000@beppo.feral.com>

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This happens after a panic which had reset the ad device to be PIO4...
the reboot that followed probed:

...
ata0: iobase=0x01f0 altiobase=0x03f6 bmaddr=0x10280
ata0: mask=03 status0=50 status1=00
ata0: mask=03 ostat0=50 ostat2=00
ata0-master: ATAPI probe a=00 b=00
ata0-slave: ATAPI probe a=00 b=00
ata0: mask=03 status0=50 status1=00
ata0-master: ATA probe a=01 b=a5
ata0: devices=01
ata0: at 0x1f0 irq 14 on atapci0
ata1: iobase=0x0170 altiobase=0x0376 bmaddr=0x10288
ata1: mask=00 status0=ff status1=ff
ata1: probe allocation failed
Trying Read_Port at 203
....

but got

ata0-master: ata_command: timeout waiting for intr
ata0-master: identify failed

instead of the expected:

ata0-master: success setting WDMA2 on CMD chip
Creating DISK ad0
Creating DISK wd0
ad0: <ST33210A/3.04> ATA-4 disk at ata0-master
ad0: 3098MB (6346368 sectors), 6296 cyls, 16 heads, 63 S/T, 512 B/S
ad0: 16 secs/int, 1 depth queue, WDMA2
ad0: piomode=4 dmamode=2 udmamode=2 cblid=0
ad0: 3098MB <ST33210A> [6296/16/63] at ata0-master WDMA2


which, ho ho ho, caused the root filesystem to be mounted from da0 instead of
ad0 so things look 'almost' okay (but I'm now running my -current instead of
-stable system...) *sputter*....


Then doing an 'init' at the PROM hung, so I needed to power cycle.
*more sputter*...

Would you consider this an 'alpha' problem? Or would it be reasonable
after doing the reset for dumping that a shutdown hook for resetting
completely would be reasonable?

-matt



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