diff -r c783f340bef8 -r f4e09625f1dd linux-2.6-xen-sparse/drivers/xen/pciback/pciback.h
--- a/linux-2.6-xen-sparse/drivers/xen/pciback/pciback.h	Tue Apr 11 08:58:04 2006
+++ b/linux-2.6-xen-sparse/drivers/xen/pciback/pciback.h	Tue Apr 11 17:40:03 2006
@@ -11,6 +11,8 @@
 #include <xen/xenbus.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
+#include <linux/workqueue.h>
+#include <asm/atomic.h>
 #include <xen/interface/io/pciif.h>
 
 struct pci_dev_entry {
@@ -30,10 +32,14 @@
 	int evtchn_irq;
 
 	struct xen_pci_sharedinfo *sh_info;
+	atomic_t in_use;
+	struct work_struct op_work;
 };
 
 struct pciback_dev_data {
 	struct list_head config_fields;
+	int permissive;
+	int warned_on_write;
 };
 
 /* Get/Put PCI Devices that are hidden from the PCI Backend Domain */
@@ -48,9 +54,10 @@
 void pciback_reset_device(struct pci_dev *pdev);
 
 /* Access a virtual configuration space for a PCI device */
-int pciback_config_init(struct pci_dev *dev);
-void pciback_config_reset(struct pci_dev *dev);
-void pciback_config_free(struct pci_dev *dev);
+int pciback_config_init(void);
+int pciback_config_init_dev(struct pci_dev *dev);
+void pciback_config_reset_dev(struct pci_dev *dev);
+void pciback_config_free_dev(struct pci_dev *dev);
 int pciback_config_read(struct pci_dev *dev, int offset, int size,
 			u32 * ret_val);
 int pciback_config_write(struct pci_dev *dev, int offset, int size, u32 value);
@@ -70,6 +77,7 @@
 
 /* Handles events from front-end */
 irqreturn_t pciback_handle_event(int irq, void *dev_id, struct pt_regs *regs);
+void pciback_do_op(void *data);
 
 int pciback_xenbus_register(void);
 void pciback_xenbus_unregister(void);