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    SubjectRe: [linux-usb-devel] Re: [PATCH] Adaptec USBXchange and USB2Xchange support
    Date
    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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