This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / xen / pciback / pciback.h

diff --git a/drivers/xen/pciback/pciback.h b/drivers/xen/pciback/pciback.h
new file mode 100644 (file)
index 0000000..4b876e4
--- /dev/null
+++ b/drivers/xen/pciback/pciback.h
@@ -0,0 +1,93 @@
+/*
+ * PCI Backend Common Data Structures & Function Declarations
+ *
+ *   Author: Ryan Wilson <hap9@epoch.ncsc.mil>
+ */
+#ifndef __XEN_PCIBACK_H__
+#define __XEN_PCIBACK_H__
+
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#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 {
+       struct list_head list;
+       struct pci_dev *dev;
+};
+
+#define _PDEVF_op_active       (0)
+#define PDEVF_op_active        (1<<(_PDEVF_op_active))
+
+struct pciback_device {
+       void *pci_dev_data;
+       spinlock_t dev_lock;
+
+       struct xenbus_device *xdev;
+
+       struct xenbus_watch be_watch;
+       u8 be_watching;
+
+       int evtchn_irq;
+
+       struct vm_struct *sh_area;
+       struct xen_pci_sharedinfo *sh_info;
+
+       unsigned long flags;
+
+       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 */
+struct pci_dev *pcistub_get_pci_dev_by_slot(struct pciback_device *pdev,
+                                           int domain, int bus,
+                                           int slot, int func);
+struct pci_dev *pcistub_get_pci_dev(struct pciback_device *pdev,
+                                   struct pci_dev *dev);
+void pcistub_put_pci_dev(struct pci_dev *dev);
+
+/* Ensure a device is turned off or reset */
+void pciback_reset_device(struct pci_dev *pdev);
+
+/* Access a virtual configuration space for a PCI device */
+int pciback_config_init(void);
+int pciback_config_init_dev(struct pci_dev *dev);
+void pciback_config_free_dyn_fields(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);
+
+/* Handle requests for specific devices from the frontend */
+typedef int (*publish_pci_root_cb) (struct pciback_device * pdev,
+                                   unsigned int domain, unsigned int bus);
+int pciback_add_pci_dev(struct pciback_device *pdev, struct pci_dev *dev);
+void pciback_release_pci_dev(struct pciback_device *pdev, struct pci_dev *dev);
+struct pci_dev *pciback_get_pci_dev(struct pciback_device *pdev,
+                                   unsigned int domain, unsigned int bus,
+                                   unsigned int devfn);
+int pciback_init_devices(struct pciback_device *pdev);
+int pciback_publish_pci_roots(struct pciback_device *pdev,
+                             publish_pci_root_cb cb);
+void pciback_release_devices(struct pciback_device *pdev);
+
+/* 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);
+
+extern int verbose_request;
+#endif