Firmware to spin-down HDD?

[Jekyll]

Not working
HDD: WD800AAJS (S-ATA)
Bridge: Delock

Host scsi0: usb-storage
Vendor: JMicron
Product: USB to ATA/ATAPI Bridge
Serial Number: 77A091038972
Protocol: Transparent SCSI
Transport: Bulk
GUID: 152d2338000077a091038972
Attached: Yes

Vendor=152d ProdID=2338 Rev= 1.00

[Sheeft]

Working:
HDD: WDC WD4000
BOX: ViPower VPA-35018 (SATA -> USB)

Host scsi0: usb-storage
Vendor: Sunplus Technology Inc.
Product: USB to Serial-ATA bridge
Serial Number: WDC WD4000 WD-WCANU1268282
Protocol: Transparent SCSI
Transport: Bulk
GUID: 04fc0c15fff60cb7e1268282
Attached: Yes

[Xander]

I think, it is obvious that spindown capability depends on the hdd box's chipset only. So, I'll try to summarize the facts gathered:

VID	PID	Vendor			Product				Working?
0402	5637	ALi Corp.		M5637 IDE Controller		no
04b4	6830	Cypress Semiconductor	USB-2.0 IDE Adapter		no
04cf	8818	Myson Century, Inc.	Fast 3.5" External Storage	no
04fc	0c15	Sunplus Technology Inc.	SPIF215A USB-SATA bridge	yes
04fc	0c25	Sunplus Technology Inc.	USB-SATA bridge			yes
05e3	0702	Genesys Logic, Inc.	USB 2.0 IDE Adapter		no
067b	2506	Prolific Tech. Inc.	Mass Storage Device		yes
067b	2507	Prolific Tech. Inc.	Mass Storage Device		yes
067b	3507	Prolific Tech. Inc.	ATAPI-6 Bridge Controller	yes
07ab	fcc7	Freecom			Freecom Mobile Drive		yes
0930	0b02	Toshiba			GigaStore			yes
0bc2	0501	Seagate			USB Mass Storage		no
0c0b	b159	Trekstor		DataStation maxi m.u		yes
0d49	3210	Maxtor			Maxtor 3200			yes
0d49	7000	Maxtor			OneTouch			yes
1058	0704	Western Digital		External HDD			yes
1058	1010	Western Digital		External HDD			yes
152d	2338	JMicron			JM20338 SATA, USB Combo		no
1652	6600	Super Top		USB 2.0  IDE DEVICE		no

Well, try to know which chipset is in the box before buing it. This page might help.

[schufti]

Hi,

regarding to USB enclosures with Cypress chipset, there might be a chance with following command:

/usr/local/sbin/scsi-start 0 --pc=2 /dev/scsi/host0/bus0/target0/lun0/disc

if someone has the knowledge how to program USB access, there is a special feature in the Cypress chips to pass-through ATA commands. Details are in the AT2LP rev C datasheet might be only a few lines of code for a pro....

also the chip has a register for setting autom. spindown value on ATA-initialisation, but I never got it to work....

schufti

[Radiator]

Works perfectly for me, thanks!
Freecom 160GB bus-powered HD

Vendor=07ab
ProdID=fcc7

Host scsi0: usb-storage
Vendor: Freecom
Product: Freecom Mobile Drive
Serial Number: 02FA0D7506B0
Protocol: Transparent SCSI
Transport: Bulk
GUID: 07abfcc7000002fa0d7506b0
Attached: Yes

[tuigje]

I did some experimenting:

using my pc (ubuntu feisty fawn), I was not able to spin down the harddisk with the scsi-tools either (just as under kamikaze on a wl-500gP).

the lsusb output of the external HD is:
ID 04b4:6830 Cypress Semiconductor Corp. USB-2.0 IDE Adapter

Using the sg3-utils of ubuntu (http://sg.torque.net/sg/sg3_utils.html)
i did manage to make the disk spin down (but it didn't spin up until
after a reset of the drive)

I'm now trying to make a package out of it, but haven't finished yet.

[tuigje]

I just made an package, but sadly, it doesn´t work.

on my (ubuntu 7.04) pc, it works as expected:

sg_start --stop --pc=2 /dev/sda

On my wl-500gP however, it doesn´t:

sg_start --stop --pc=2 /dev/discs/disc1/disc
start stop unit: pass through os error: Invalid argument
START STOP UNIT command failed

I used the exact same source for both the PC and the WL-500G, both are statically build versions, so that´s not the difference.
On http://sg.torque.net/sg/sg3_utils.html it is noted that for kernel 2.4 the /dev/sg0 interface is required. It can be made with

mknod /dev/sg0 c 21 0

But I haven´t yet figured out how to enable the support in the kernel for /dev/sgX.
I can mount and read the disk, so scsi support itself is working fine.

I´m running kamikaze with 2.4 kernel (for wifi support) Is there anyone interested in testing this for kernel 2.6 ?
Both the makefile and (compressed) .ipk file are attached.

[DCX2]

Hi, I'm actually using teddy_bear's USB Tomato mod on a WL-520GU (stupid 4 MB flash...), and it includes scsi-stop and scsi-start, and I wanted to share my experience with getting it working.

I used a watt-meter to verify that the disk actually did spin down or up. My setup involves an external enclosure with the following stats.

   Host scsi0: usb-storage
       Vendor: JMicron
      Product: JM20336 SATA, USB Combo
Serial Number: DA0150217888
     Protocol: Transparent SCSI
    Transport: Bulk
         GUID: 152d23360000da0150217888
     Attached: Yes
         Port: 1
          Bus: 00:03.1-1

Vendor=152d ProdID=2336

This is very similar to one that doesn't work (PID=2338). But I had to do something funny to get mine to work. If I call scsi-stop, the disk spins down, and when I go to access it, the disk becomes inaccessible. If I call scsi-stop and then scsi-start before accessing the disk, it behaves correctly, staying spun down until I go to access it.

There are other Tomato-specific requirements for scsi-stop and scsi-start. You need to put the script in /jffs, and you need the build with awk. Here's the final script with the other Tomato-specific changes.

#!/bin/sh
if /usr/bin/[ $# -ne 1 ]; then
        /bin/echo 1>&2 "Usage: $0 <device>"
        exit 1
fi

PERIOD=30
BOUNDARY=1200
SCSISTOP=scsi-stop
SCSISTART=scsi-start
LOGFILE=/tmp/scsi-stop.log

searchstr="disk_io:"
devaddr="(`/bin/ls -l $1 | /usr/bin/awk '{print($5 int($6/16))}'`)"

str=`/bin/grep "$searchstr" /proc/stat | devaddr="$devaddr" /usr/bin/awk -v 'RS= |\n' -F : '{ if($1==ENVIRON["devaddr"]) print($2) }'`
cooltime=0
stopped=0

while true; do
        /bin/sleep $PERIOD
        newstr=`/bin/grep "$searchstr" /proc/stat | devaddr="$devaddr" /usr/bin/awk -v 'RS= |\n' -F : '{ if($1==ENVIRON["devaddr"]) print($2) }'`
        if /usr/bin/[ "$newstr" = "$str" ]; then
                cooltime=$(($cooltime + $PERIOD))
                if /usr/bin/[ $cooltime -ge $BOUNDARY -a $stopped -eq 0 ]; then
                        $SCSISTOP $1
                        $SCSISTART $1
                        time=`/bin/date '+%b %e %H:%M:%S'`
                        /bin/echo "$time: Cooled down..." >> $LOGFILE
                        stopped=1
                fi
        else
                if /usr/bin/[ $cooltime -ne 0 ]; then
                        time=`/bin/date '+%b %e %H:%M:%S'`
                        /bin/echo "$time: Disk first used after $cooltime seconds" >> $LOGFILE
                fi
                cooltime=0
                str=$newstr
                stopped=0
        fi
done

[tmsulica]

Prestigio Don't works

   Host scsi0: usb-storage
       Vendor: Prestigio
      Product: USB Storage HDD
Serial Number: 7DF88FFFFFFF
     Protocol: Transparent SCSI
    Transport: Bulk
         GUID: 152d233900007df88fffffff
     Attached: Yes
         Port: 1
          Bus: 01:03.2-1

[KBac]

Works well
Box: Transcend StoreJet 2.5 (SATA)

   Host scsi1: usb-storage
       Vendor: JMicron
      Product: StoreJet Transcend
Serial Number: 0D0708925FFF
     Protocol: Transparent SCSI
    Transport: Bulk
         GUID: 152d232900000d0708925fff
     Attached: Yes
         Port: 1.1
          Bus: 01:03.2-1.1

P:  Vendor=152d ProdID=2329 Rev= 0.00
S:  Manufacturer=JMicron
S:  Product=StoreJet Transcend