xen: register xen pci notifier

Register a pci notifier to add (or remove) pci devices to Xen via
hypercalls. Xen needs to know the pci devices present in the system to
handle pci passthrough and even MSI remapping in the initial domain.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/include/xen/interface/physdev.h b/include/xen/interface/physdev.h
index a85d76c2e360..2b2c66c3df00 100644
--- a/include/xen/interface/physdev.h
+++ b/include/xen/interface/physdev.h
@@ -136,6 +136,27 @@ struct physdev_unmap_pirq {
     int pirq;
 };
 
+#define PHYSDEVOP_manage_pci_add        15
+#define PHYSDEVOP_manage_pci_remove     16
+struct physdev_manage_pci {
+        /* IN */
+        uint8_t bus;
+        uint8_t devfn;
+};
+
+#define PHYSDEVOP_manage_pci_add_ext    20
+struct physdev_manage_pci_ext {
+        /* IN */
+        uint8_t bus;
+        uint8_t devfn;
+        unsigned is_extfn;
+        unsigned is_virtfn;
+        struct {
+                uint8_t bus;
+                uint8_t devfn;
+        } physfn;
+};
+
 /*
  * Argument to physdev_op_compat() hypercall. Superceded by new physdev_op()
  * hypercall since 0x00030202.