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scsi: introduce SCSIBusOps

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There are more operations than a SCSI bus can handle, besides completing
commands.  One example, which this series will introduce, is cleaning up
after a request is cancelled.

More long term, a "SCSI bus" can represent the LUNs attached to a
target; in this case, while all commands will ultimately reach a logical
unit, it is the target who is in charge of answering REPORT LUNs.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Paolo Bonzini 2011-04-18 17:11:14 +02:00
parent ab9adc88c8
commit cfdc1bb06e
7 changed files with 34 additions and 17 deletions
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6
hw/usb-msd.c
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@ -487,6 +487,10 @@ static void usb_msd_password_cb(void *opaque, int err)
qdev_unplug(&s->dev.qdev);
}
static const struct SCSIBusOps usb_msd_scsi_ops = {
.complete = usb_msd_command_complete
};
static int usb_msd_initfn(USBDevice *dev)
{
MSDState *s = DO_UPCAST(MSDState, dev, dev);
@ -516,7 +520,7 @@ static int usb_msd_initfn(USBDevice *dev)
}
usb_desc_init(dev);
scsi_bus_new(&s->bus, &s->dev.qdev, 0, 1, usb_msd_command_complete);
scsi_bus_new(&s->bus, &s->dev.qdev, 0, 1, &usb_msd_scsi_ops);
s->scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0, !!s->removable);
if (!s->scsi_dev) {
return -1;