Konrad Rzeszutek Wilk
2013-Dec-13 16:09 UTC
[RFC PATCH 4/5] xen/pciback: Move the FLR code to a function.
Moving the bulk of the code its own function to aid
in making the ''xen/pciback: PCI reset slot or bus''
easier.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
drivers/xen/xen-pciback/pci_stub.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/xen/xen-pciback/pci_stub.c
b/drivers/xen/xen-pciback/pci_stub.c
index b6a856f..4b450c5 100644
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -242,6 +242,24 @@ struct pci_dev *pcistub_get_pci_dev(struct xen_pcibk_device
*pdev,
return found_dev;
}
+void pcistub_reset_pci_dev(struct pci_dev *dev)
+{
+ /* This is OK - we are running from workqueue context
+ * and want to inhibit the user from fiddling with ''reset''
+ */
+
+ dev_dbg(&dev->dev, "resetting (FLR, D3, etc) the device\n");
+
+ pci_reset_function(dev);
+ pci_restore_state(dev);
+
+ /* This disables the device. */
+ xen_pcibk_reset_device(dev);
+
+ /* And cleanup up our emulated fields. */
+ xen_pcibk_config_reset_dev(dev);
+}
+
void pcistub_put_pci_dev(struct pci_dev *dev)
{
struct pcistub_device *psdev, *found_psdev = NULL;
--
1.8.3.1