Date: Tue, 11 Jan 2005 12:09:25 +1030 From: "Wilkinson, Alex" <alex.wilkinson@dsto.defence.gov.au> To: usb@freebsd.org Subject: Re: [USB] JetFlash TS1GJF2B 2.00 Attempt to query devicesizefailed: UNIT ATTENTION Message-ID: <20050111013925.GD32601@squash.dsto.defence.gov.au> In-Reply-To: <20050111000956.GB32601@squash.dsto.defence.gov.au> References: <20050107064748.GE18554@squash.dsto.defence.gov.au> <41DE4E52.2040301@elischer.org> <20050111000956.GB32601@squash.dsto.defence.gov.au>
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0n Tue, Jan 11, 2005 at 10:39:56AM +1030, Wilkinson, Alex wrote:
> >> (da0:umass-sim0:0:0:0): Retrying Command (per Sense Data)
> >> (da0:umass-sim0:0:0:0): READ CAPACITY. CDB: 25 0 0 0 0 0 0 0 0 0
> >> (da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
> >> (da0:umass-sim0:0:0:0): SCSI Status: Check Condition
> >> (da0:umass-sim0:0:0:0): UNIT ATTENTION asc:28,0
> >> (da0:umass-sim0:0:0:0): Not ready to ready change, medium may have
> >> changed
> >> (da0:umass-sim0:0:0:0): Retrying Command (per Sense Data)
Okay, I'm trying to make sense of the aforementioned debug output.
1. (da0:umass-sim0:0:0:0): READ CAPACITY. CDB: 25 0 0 0 0 0 0 0 0 0
(da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
I'm suspecting that this means that the READ CAPACITY command
failed, therefore we are unable to determine the device's
physical parameters.
2. (da0:umass-sim0:0:0:0): SCSI Status: Check Condition
Looks like we are waiting to for the device to become ready to be
accessed.
3. (da0:umass-sim0:0:0:0): UNIT ATTENTION asc:28,0
(da0:umass-sim0:0:0:0): Not ready to ready change, medium may have changed
This 'Additional Sense Code' seems to be where it fails. Looking at
the RBC specs we should see an ASC/ASCQ of 'NEW MEDIA READY FOR
ACCESS'. However, we don't.
This is as far as I can go without having my hand held. I would dearly
like to get this UMASS device working.
Can any USB wizards please suggest quirks etc that could result in a
solution.
Thanks
- Alex
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