xen: re-name XenDevice to XenLegacyDevice...

...and xen_backend.h to xen-legacy-backend.h

Rather than attempting to convert the existing backend infrastructure to
be QOM compliant (which would be hard to do in an incremental fashion),
subsequent patches will introduce a completely new framework for Xen PV
backends. Hence it is necessary to re-name parts of existing code to avoid
name clashes. The re-named 'legacy' infrastructure will be removed once all
backends have been ported to the new framework.

This patch is purely cosmetic. No functional change.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Anthony Perard <anthony.perard@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/include/hw/xen/xen-legacy-backend.h b/include/hw/xen/xen-legacy-backend.h
new file mode 100644
index 0000000000..20cb47b5bf
--- /dev/null
+++ b/include/hw/xen/xen-legacy-backend.h
@@ -0,0 +1,104 @@
+#ifndef QEMU_HW_XEN_BACKEND_H
+#define QEMU_HW_XEN_BACKEND_H
+
+#include "hw/xen/xen_common.h"
+#include "hw/xen/xen_pvdev.h"
+#include "sysemu/sysemu.h"
+#include "net/net.h"
+
+#define TYPE_XENSYSDEV "xen-sysdev"
+#define TYPE_XENSYSBUS "xen-sysbus"
+#define TYPE_XENBACKEND "xen-backend"
+
+#define XENBACKEND_DEVICE(obj) \
+    OBJECT_CHECK(XenLegacyDevice, (obj), TYPE_XENBACKEND)
+
+/* variables */
+extern struct xs_handle *xenstore;
+extern const char *xen_protocol;
+extern DeviceState *xen_sysdev;
+extern BusState *xen_sysbus;
+
+int xenstore_mkdir(char *path, int p);
+int xenstore_write_be_str(struct XenLegacyDevice *xendev, const char *node,
+                          const char *val);
+int xenstore_write_be_int(struct XenLegacyDevice *xendev, const char *node,
+                          int ival);
+int xenstore_write_be_int64(struct XenLegacyDevice *xendev, const char *node,
+                            int64_t ival);
+char *xenstore_read_be_str(struct XenLegacyDevice *xendev, const char *node);
+int xenstore_read_be_int(struct XenLegacyDevice *xendev, const char *node,
+                         int *ival);
+void xenstore_update_fe(char *watch, struct XenLegacyDevice *xendev);
+void xenstore_update_be(char *watch, char *type, int dom,
+                        struct XenDevOps *ops);
+char *xenstore_read_fe_str(struct XenLegacyDevice *xendev, const char *node);
+int xenstore_read_fe_int(struct XenLegacyDevice *xendev, const char *node,
+                         int *ival);
+int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node,
+                            uint64_t *uval);
+
+void xen_be_check_state(struct XenLegacyDevice *xendev);
+
+/* xen backend driver bits */
+int xen_be_init(void);
+void xen_be_register_common(void);
+int xen_be_register(const char *type, struct XenDevOps *ops);
+int xen_be_set_state(struct XenLegacyDevice *xendev, enum xenbus_state state);
+int xen_be_bind_evtchn(struct XenLegacyDevice *xendev);
+void xen_be_set_max_grant_refs(struct XenLegacyDevice *xendev,
+                               unsigned int nr_refs);
+void *xen_be_map_grant_refs(struct XenLegacyDevice *xendev, uint32_t *refs,
+                            unsigned int nr_refs, int prot);
+void xen_be_unmap_grant_refs(struct XenLegacyDevice *xendev, void *ptr,
+                             unsigned int nr_refs);
+
+typedef struct XenGrantCopySegment {
+    union {
+        void *virt;
+        struct {
+            uint32_t ref;
+            off_t offset;
+        } foreign;
+    } source, dest;
+    size_t len;
+} XenGrantCopySegment;
+
+int xen_be_copy_grant_refs(struct XenLegacyDevice *xendev,
+                           bool to_domain, XenGrantCopySegment segs[],
+                           unsigned int nr_segs);
+
+static inline void *xen_be_map_grant_ref(struct XenLegacyDevice *xendev,
+                                         uint32_t ref, int prot)
+{
+    return xen_be_map_grant_refs(xendev, &ref, 1, prot);
+}
+
+static inline void xen_be_unmap_grant_ref(struct XenLegacyDevice *xendev,
+                                          void *ptr)
+{
+    return xen_be_unmap_grant_refs(xendev, ptr, 1);
+}
+
+/* actual backend drivers */
+extern struct XenDevOps xen_console_ops;      /* xen_console.c     */
+extern struct XenDevOps xen_kbdmouse_ops;     /* xen_framebuffer.c */
+extern struct XenDevOps xen_framebuffer_ops;  /* xen_framebuffer.c */
+extern struct XenDevOps xen_blkdev_ops;       /* xen_disk.c        */
+#ifdef CONFIG_VIRTFS
+extern struct XenDevOps xen_9pfs_ops;       /* xen-9p-backend.c        */
+#endif
+extern struct XenDevOps xen_netdev_ops;       /* xen_nic.c         */
+#ifdef CONFIG_USB_LIBUSB
+extern struct XenDevOps xen_usb_ops;          /* xen-usb.c         */
+#endif
+
+/* configuration (aka xenbus setup) */
+void xen_config_cleanup(void);
+int xen_config_dev_blk(DriveInfo *disk);
+int xen_config_dev_nic(NICInfo *nic);
+int xen_config_dev_vfb(int vdev, const char *type);
+int xen_config_dev_vkbd(int vdev);
+int xen_config_dev_console(int vdev);
+
+#endif /* QEMU_HW_XEN_BACKEND_H */