Archipelago » qemu

    uint32_t current_tag;

    SCSIDevice *current_dev;

    lsi_request *p, *p_next;

    int id;

    if (s->current) {

        current_tag = s->current->tag;

    } else {

        current_tag = s->select_tag;

    }

    id = (current_tag >> 8) & 0xf;

    current_dev = s->bus.devs[id];

        case 0x0d:

            /* The ABORT TAG message clears the current I/O process only. */

            DPRINTF("MSG: ABORT TAG tag=0x%x\n", current_tag);

            current_dev->info->cancel_io(current_dev, current_tag);

            lsi_disconnect(s);

            break;

        case 0x06:

        case 0x0e:

        case 0x0c:

            /* The ABORT message clears all I/O processes for the selecting

               initiator on the specified logical unit of the target. */

            if (msg == 0x06) {

                DPRINTF("MSG: ABORT tag=0x%x\n", current_tag);

            }

            /* The CLEAR QUEUE message clears all I/O processes for all

               initiators on the specified logical unit of the target. */

            if (msg == 0x0e) {

                DPRINTF("MSG: CLEAR QUEUE tag=0x%x\n", current_tag);

            }

            /* The BUS DEVICE RESET message clears all I/O processes for all

               initiators on all logical units of the target. */

            if (msg == 0x0c) {

                DPRINTF("MSG: BUS DEVICE RESET tag=0x%x\n", current_tag);

            }

            /* clear the current I/O process */

            current_dev->info->cancel_io(current_dev, current_tag);

            /* As the current implemented devices scsi_disk and scsi_generic

               only support one LUN, we don't need to keep track of LUNs.

               Clearing I/O processes for other initiators could be possible

               for scsi_generic by sending a SG_SCSI_RESET to the /dev/sgX

               device, but this is currently not implemented (and seems not

               to be really necessary). So let's simply clear all queued

               commands for the current device: */

            id = current_tag & 0x0000ff00;

            QTAILQ_FOREACH_SAFE(p, &s->queue, next, p_next) {

                if ((p->tag & 0x0000ff00) == id) {

                    current_dev->info->cancel_io(current_dev, p->tag);

                    QTAILQ_REMOVE(&s->queue, p, next);

                }

            }

            lsi_disconnect(s);

            break;