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SubjectRe: [linux-usb-devel] Re: [PATCH] Adaptec USBXchange and USB2Xchange support
So how do you address a multi-LUN device with the USB2Xchange?

Matt

On Mon, Jan 30, 2006 at 07:04:15PM +0100, Ren? Rebe wrote:
> Hi,
>
> finally - I got multi target (that is a SCSI device other than ID = 0 and more than than one) working
> with the USB2Xchange. But it needs two ugly changes in transport.c:
>
> The first one is only encoding the ID, no LUN:
>
> --- ../linux-2.6.15/drivers/usb/storage/transport.c 2006-01-03 04:21:10.000000000 +0100
> +++ drivers/usb/storage/transport.c 2006-01-30 18:49:25.172317000 +0100
> @@ -983,7 +983,7 @@
> bcb->Tag = ++us->tag;
> bcb->Lun = srb->device->lun;
> if (us->flags & US_FL_SCM_MULT_TARG)
> - bcb->Lun |= srb->device->id << 4;
> + bcb->Lun = srb->device->id;
> bcb->Length = srb->cmd_len;
>
> /* copy the command payload */
>
> Would it be ok when special case that one only for the Adaptec device, for now?
> Or define a whole new 2nd MULTI_TARG(2) quirk?
>
> And furthermore the device does not respond to request other than the attached targets,
> this might be needed:
>
> @@ -1069,6 +1069,19 @@
> US_DEBUGP("Bulk Status S 0x%x T 0x%x R %u Stat 0x%x\n",
> le32_to_cpu(bcs->Signature), bcs->Tag,
> residue, bcs->Status);
> +
> + if (bcs->Status > US_BULK_STAT_FAIL) {
> + /* Adaptec USB2XCHANGE */
> + if (us->pusb_dev->descriptor.idVendor == 0x03f3 &&
> + us->pusb_dev->descriptor.idProduct == 0x2003) {
> +
> + /* This device will send bcs->Status == 0x8a for unused targets and
> + == 0x02 for SRB's that require SENSE. */
> + bcs->Status = US_BULK_STAT_OK;
> + fake_sense = 1;
> + US_DEBUGP("Patched Bulk status to %d.\n", bcs->Status);
> + }
> + }
> if (bcs->Tag != us->tag || bcs->Status > US_BULK_STAT_PHASE) {
> US_DEBUGP("Bulk logical error\n");
> return USB_STOR_TRANSPORT_ERROR;
>
> Yours,
>
> --
> René Rebe - Rubensstr. 64 - 12157 Berlin (Europe / Germany)
> http://www.exactcode.de | http://www.t2-project.org
> +49 (0)30 255 897 45
>
>
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--
Matthew Dharm Home: mdharm-usb@one-eyed-alien.net
Maintainer, Linux USB Mass Storage Driver

NYET! The evil stops here!
-- Pitr
User Friendly, 6/22/1998
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