Usbat2 December 2001

usbat2@lists.lysator.liu.se

5 participants
5 discussions

small update
by Herald van der Breggen 01 Jan '02

01 Jan '02

Not much progress, but made en newer version anyway: http://www.xs4all.nl/~heraldb/usb-storage-002.tar.gz In this one extended debug info is printed into the logfile and the INQUIRE request is handled by de standard fill_inquiry_response of usb.c. So now this scsi-like message wil appear in the logfile: Dec 30 21:04:23 chita kernel: Command INQUIRY (6 bytes) Dec 30 21:04:23 chita kernel: 12 00 00 00 ff 00 f6 cf b4 0e f6 cf Dec 30 21:04:23 chita kernel: usbat2_ata_command is called Dec 30 21:04:23 chita kernel: usbat2_ata_command: INQUIRY. Returning bogus responsescsi cmd done, result=0x0 Dec 30 21:04:23 chita kernel: *** thread sleeping. Dec 30 21:04:23 chita kernel: Vendor: SCM Model: USBAT-02 Rev: 0005 Dec 30 21:04:23 chita kernel: Type: Direct-Access ANSI SCSI revision: 00 Also other requests appear: Dec 30 21:04:24 chita kernel: Command TEST_UNIT_READY (6 bytes) Dec 30 21:04:24 chita kernel: Command READ_CAPACITY (10 bytes) Dec 30 21:04:24 chita kernel: Command MODE_SENSE (6 bytes) I Don't now what to do with these, so far... Now, the most difficult part (for me) starts: trying to understand the sniffed data, what ATA commands do, and how to fit this in the driver.... Herald

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Re: a beginning
by Chris Niekel 30 Dec '01

30 Dec '01

Hi, I just downloaded usb-storage-001.tar.gz, and got it "working" on my debian system with kernel 2.4.17. Like Herald said, it prints output when I plugin and remove my device. The device also shows up in /proc/scsi/scsi, but I don't know how it can be mounted, although I'm quite sure that isn't finished yet. Since I only read about this this mailinglist and website today, I'll have a lot of reading to do before I can become useful, but I'll certainly be lurking on the list and testing any progress that is made. If anybody already has more than what Herald had 3 days ago, I can't wait to see it. Greetings, Chris Niekel (Dutch too)

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a beginning
by Herald van der Breggen 27 Dec '01

27 Dec '01

Hello fellow usbat2 developers, Today I have made a kind of base for future development for the usbat2 device. I took the recent usb-storage files van CVS and changed some things so that some piece of code is activated when the usbat2 device is connected. I wanted to work with a simple development directory, with it's own makefile (instead of dealing with the top-level directory of the kernel) and that is achieved. If you are interested in helping in further development of the driver you could download de the development directory from http://www.xs4all.nl/~heraldb/usb-storage-001.tar.gz. Untar this somewhere and in this same directory (where you untarred the archive), place a symbolic link to the drivers/scsi directory of you kernel source. Maybe you need also to edit linux/version.h so that it reflects the kernel version you are running at that moment. You could also copy this version.h to the untarred dev/linux directory (which is included earlier in de CFLAGS of the makefile) and edit it there. Maybe you should also remove the SMP-flag from CFLAGS in the makefile if you are not on a SMP-system. Then, type make and you will have the usb-storage.o (if you are lucky) including a dummy usbat2-driver. If everything goes well you can find something like this in your logfile: After "insmod usb-storage.o" Dec 27 18:35:29 chita kernel: Initializing USB Mass Storage driver... Dec 27 18:35:29 chita kernel: usb.c: registered new driver usb-storage Dec 27 18:35:29 chita kernel: USB Mass Storage support registered. After connecting the device: Dec 27 18:35:36 chita kernel: hub.c: USB new device connect on bus1/2/3, assigned device number 7 Dec 27 18:35:37 chita kernel: usb_control/bulk_msg: timeout Dec 27 18:35:37 chita kernel: USBAT-2 connected Dec 27 18:35:37 chita kernel: scsi1 : SCSI emulation for USB Mass Storage devices Dec 27 18:35:37 chita kernel: usbat2_ata_commanc is called Dec 27 18:35:37 chita kernel: scsi: unknown type 24 Dec 27 18:35:37 chita kernel: Vendor: GHIJKLMN Model: OPQRSTUVWXYZ ý\227Î Rev: Dec 27 18:35:37 chita kernel: Type: Unknown ANSI SCSI revision: 01 Dec 27 18:35:37 chita kernel: resize_dma_pool: unknown device type 24 Dec 27 18:35:37 chita /etc/hotplug/usb.agent: ... no drivers for USB product 4e6/1010/5 After disconnecting the device: Dec 27 18:35:50 chita kernel: usb.c: USB disconnect on device 7 after rmmod: Dec 27 18:35:57 chita kernel: usb.c: deregistering driver usb-storage For futher development, Matthew Dharms advised to boorw code from the isd200-driver, because this driver should be similar to the usbat2-driver. In the original Makefile conained an entry for a shuttle_cf.c, which looks a bit like our device, but since SCM has taken over Shuttle, I don't think it's a good thing to keep on using this Shuttle name. I took "scm_usbat2.c" instead. So now there is an evironment for development, the real thing can start: writing the driver itself instead of dreaming about it ;-) I Wish you all a nice and lucky 2002 and also a fine working usbat2 device :-) Regards, Herald

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Re: Progress?
by Hans Persson 12 Dec '01

12 Dec '01

Herald van der Breggen <herald(a)breggen.xs4all.nl> writes: > Another thing: everytime I want to rebuild the storage modules I > must go to the top level directory and do a make (which takes some > time, because this process is doing more than just usb-stuff). I > wished I could do a make in the storage directory. I could modify > the makefile to make that possible. I'm pretty sure that this shouldn't be necessary, but I don't know what's wrong. I'm guessing that you need to update something more than just the USB tree, perhaps? > Should I ask Mathew how to make a proper start or can you help me? Better ask someone who *knows*. Hans -- +----------------------------------------------------------------------------+ | Hans Persson http://www.lysator.liu.se/~unicorn/ | | unicorn(a)lysator.liu.se http://www.lysator.liu.se/~unicorn/fandom/ | +----------------------------------------------------------------------------+

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Progress?
by Hans Persson 12 Dec '01

12 Dec '01

Hi, Has anyone made any progress? It's been quite for a while... Hans -- +----------------------------------------------------------------------------+ | Hans Persson http://www.lysator.liu.se/~unicorn/ | | unicorn(a)lysator.liu.se http://www.lysator.liu.se/~unicorn/fandom/ | +----------------------------------------------------------------------------+

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Usbat2 December 2001