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Date:      Tue, 16 Apr 2013 19:55:20 +0200
From:      Andre Albsmeier <Andre.Albsmeier@siemens.com>
To:        freebsd-stable@freebsd.org
Subject:   Lost CDROM on 9.1 with ATA_CAM on Promise controller
Message-ID:  <20130416175520.GA9548@bali>

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I have lost one of my CDROM drives (HL-DT-STDVD-RAM GH22LP20/2.00)
after going from 7.4 to 9.1 when using ATA_CAM. It is attached to
a Promise PDC20268 UDMA100 controller. A standard harddisk drive
attached to this controller works well. Cables, controller and drive
where replaced already.

Kernel gives me:

atapci1: <Promise PDC20268 UDMA100 controller> port 0xb000-0xb007,0xa800-0xa803,0xa400-0xa407,0xa000-0xa003,0x9800-0x980f mem 0xdf800000-0xdf803fff irq 11 at device 12.0 on pci0
ata2: <ATA channel> at channel 0 on atapci1
ata3: <ATA channel> at channel 1 on atapci1
...
ada0 at ata2 bus 0 scbus2 target 0 lun 0
ada0: <Maxtor 7B300R0 BAH41G10> ATA-7 device
ada0: 100.000MB/s transfers (UDMA5, PIO 8192bytes)
ada0: 286188MB (586114704 512 byte sectors: 16H 63S/T 16383C)
...
(cd2:ata3:0:0:0): got CAM status 0x50
(cd2:ata3:0:0:0): fatal error, failed to attach to device
(cd2:ata3:0:0:0): lost device, 4 refs
(cd2:ata3:0:0:0): removing device entry
...

Attaching the CDROM drive to the controller that is integrated on
the mainboard (Intel PIIX4 UDMA33 controller) does not show this
problem (but here I don't have UDMA66).

It also works when not using ATA_CAM:

...
acd0: DVDR <HL-DT-STDVD-RAM GH22LP20/2.00> at ata3-master UDMA66 
...

So this semes to be a problem with the Promise controller and ATA_CAM.

Any ideas? Or should I file PR?

Thanks,

	-Andre



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