static int xen_pcibk_remove_device(struct xen_pcibk_device *pdev,
int domain, int bus, int slot, int func)
{
int err = 0;
struct pci_dev *dev;
dev_dbg(&pdev->xdev->dev, "removing dom %x bus %x slot %x func %x\n",
domain, bus, slot, func);
dev = xen_pcibk_get_pci_dev(pdev, domain, bus, PCI_DEVFN(slot, func));
if (!dev) {
err = -EINVAL;
dev_dbg(&pdev->xdev->dev, "Couldn't locate PCI device "
"(%04x:%02x:%02x.%01x)! not owned by this domain\n",
domain, bus, slot, func);
goto out;
}
dev_dbg(&dev->dev, "unregistering for %d\n", pdev->xdev->otherend_id);
dev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED;
xen_unregister_device_domain_owner(dev);
xen_pcibk_release_pci_dev(pdev, dev);
out:
return err;
}
static int xen_pcibk_remove_device(struct xen_pcibk_device *pdev,
int domain, int bus, int slot, int func)
{
int err = 0;
struct pci_dev *dev;
dev_dbg(&pdev->xdev->dev, "removing dom %x bus %x slot %x func %x\n",
domain, bus, slot, func);
dev = xen_pcibk_get_pci_dev(pdev, domain, bus, PCI_DEVFN(slot, func));
if (!dev) {
err = -EINVAL;
dev_dbg(&pdev->xdev->dev, "Couldn't locate PCI device "
"(%04x:%02x:%02x.%d)! not owned by this domain\n",
domain, bus, slot, func);
goto out;
}
dev_dbg(&dev->dev, "unregistering for %d\n", pdev->xdev->otherend_id);
xen_unregister_device_domain_owner(dev);
/* N.B. This ends up calling pcistub_put_pci_dev which ends up
* doing the FLR. */
xen_pcibk_release_pci_dev(pdev, dev, true /* use the lock. */);
out:
return err;
}
static int xen_pcibk_export_device(struct xen_pcibk_device *pdev,
int domain, int bus, int slot, int func,
int devid)
{
struct pci_dev *dev;
int err = 0;
dev_dbg(&pdev->xdev->dev, "exporting dom %x bus %x slot %x func %x\n",
domain, bus, slot, func);
dev = pcistub_get_pci_dev_by_slot(pdev, domain, bus, slot, func);
if (!dev) {
err = -EINVAL;
xenbus_dev_fatal(pdev->xdev, err,
"Couldn't locate PCI device "
"(%04x:%02x:%02x.%01x)! "
"perhaps already in-use?",
domain, bus, slot, func);
goto out;
}
err = xen_pcibk_add_pci_dev(pdev, dev, devid,
xen_pcibk_publish_pci_dev);
if (err)
goto out;
dev_dbg(&dev->dev, "registering for %d\n", pdev->xdev->otherend_id);
dev->dev_flags |= PCI_DEV_FLAGS_ASSIGNED;
if (xen_register_device_domain_owner(dev,
pdev->xdev->otherend_id) != 0) {
dev_err(&dev->dev, "device has been assigned to another " \
"domain! Over-writting the ownership, but beware.\n");
xen_unregister_device_domain_owner(dev);
xen_register_device_domain_owner(dev, pdev->xdev->otherend_id);
}
/* TODO: It'd be nice to export a bridge and have all of its children
* get exported with it. This may be best done in xend (which will
* have to calculate resource usage anyway) but we probably want to
* put something in here to ensure that if a bridge gets given to a
* driver domain, that all devices under that bridge are not given
* to other driver domains (as he who controls the bridge can disable
* it and stop the other devices from working).
*/
out:
return err;
}
