xen: Create a new file xen_pvdev.c

The purpose of the new file is to store generic functions shared by frontend
and backends such as xenstore operations, xendevs.

Signed-off-by: Quan Xu <quan.xu@intel.com>
Signed-off-by: Emil Condrea <emilcondrea@gmail.com>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Quan Xu <xuquan8@huawei.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>

2 files changed, 70 insertions, 63 deletions

diff --git a/include/hw/xen/xen_backend.h b/include/hw/xen/xen_backend.h
index 5b02386..973cb4b 100644
--- a/include/hw/xen/xen_backend.h
+++ b/include/hw/xen/xen_backend.h
@@ -2,60 +2,10 @@
 #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 XEN_BUFSIZE 1024
-
-struct XenDevice;
-
-/* driver uses grant tables  ->  open gntdev device (xendev->gnttabdev) */
-#define DEVOPS_FLAG_NEED_GNTDEV   1
-/* don't expect frontend doing correct state transitions (aka console quirk) */
-#define DEVOPS_FLAG_IGNORE_STATE  2
-
-struct XenDevOps {
-    size_t    size;
-    uint32_t  flags;
-    void      (*alloc)(struct XenDevice *xendev);
-    int       (*init)(struct XenDevice *xendev);
-    int       (*initialise)(struct XenDevice *xendev);
-    void      (*connected)(struct XenDevice *xendev);
-    void      (*event)(struct XenDevice *xendev);
-    void      (*disconnect)(struct XenDevice *xendev);
-    int       (*free)(struct XenDevice *xendev);
-    void      (*backend_changed)(struct XenDevice *xendev, const char *node);
-    void      (*frontend_changed)(struct XenDevice *xendev, const char *node);
-    int       (*backend_register)(void);
-};
-
-struct XenDevice {
-    const char         *type;
-    int                dom;
-    int                dev;
-    char               name[64];
-    int                debug;
-
-    enum xenbus_state  be_state;
-    enum xenbus_state  fe_state;
-    int                online;
-    char               be[XEN_BUFSIZE];
-    char               *fe;
-    char               *protocol;
-    int                remote_port;
-    int                local_port;
-
-    xenevtchn_handle   *evtchndev;
-    xengnttab_handle   *gnttabdev;
-
-    struct XenDevOps   *ops;
-    QTAILQ_ENTRY(XenDevice) next;
-};
-
-/* ------------------------------------------------------------- */
-
 /* variables */
 extern xc_interface *xen_xc;
 extern xenforeignmemory_handle *xen_fmem;
@@ -63,14 +13,7 @@ extern struct xs_handle *xenstore;
 extern const char *xen_protocol;
 extern DeviceState *xen_sysdev;
 
-/* xenstore helper functions */
 int xenstore_mkdir(char *path, int p);
-int xenstore_write_str(const char *base, const char *node, const char *val);
-int xenstore_write_int(const char *base, const char *node, int ival);
-int xenstore_write_int64(const char *base, const char *node, int64_t ival);
-char *xenstore_read_str(const char *base, const char *node);
-int xenstore_read_int(const char *base, const char *node, int *ival);
-
 int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val);
 int xenstore_write_be_int(struct XenDevice *xendev, const char *node, int ival);
 int xenstore_write_be_int64(struct XenDevice *xendev, const char *node, int64_t ival);
@@ -78,11 +21,9 @@ char *xenstore_read_be_str(struct XenDevice *xendev, const char *node);
 int xenstore_read_be_int(struct XenDevice *xendev, const char *node, int *ival);
 char *xenstore_read_fe_str(struct XenDevice *xendev, const char *node);
 int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival);
-int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval);
 int xenstore_read_fe_uint64(struct XenDevice *xendev, const char *node,
                             uint64_t *uval);
 
-const char *xenbus_strstate(enum xenbus_state state);
 struct XenDevice *xen_be_find_xendev(const char *type, int dom, int dev);
 void xen_be_check_state(struct XenDevice *xendev);
 
@@ -94,9 +35,6 @@ int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state);
 int xen_be_bind_evtchn(struct XenDevice *xendev);
 void xen_be_unbind_evtchn(struct XenDevice *xendev);
 int xen_be_send_notify(struct XenDevice *xendev);
-void xen_be_printf(struct XenDevice *xendev, int msg_level,
-                   const char *fmt, ...)  GCC_FMT_ATTR(3, 4);
-
 
 /* actual backend drivers */
 extern struct XenDevOps xen_console_ops;      /* xen_console.c     */
diff --git a/include/hw/xen/xen_pvdev.h b/include/hw/xen/xen_pvdev.h
new file mode 100644
index 0000000..cd3d6bc
--- /dev/null
+++ b/include/hw/xen/xen_pvdev.h
@@ -0,0 +1,69 @@
+#ifndef QEMU_HW_XEN_PVDEV_H
+#define QEMU_HW_XEN_PVDEV_H
+
+#include "hw/xen/xen_common.h"
+/* ------------------------------------------------------------- */
+
+#define XEN_BUFSIZE 1024
+
+struct XenDevice;
+
+/* driver uses grant tables  ->  open gntdev device (xendev->gnttabdev) */
+#define DEVOPS_FLAG_NEED_GNTDEV   1
+/* don't expect frontend doing correct state transitions (aka console quirk) */
+#define DEVOPS_FLAG_IGNORE_STATE  2
+
+struct XenDevOps {
+    size_t    size;
+    uint32_t  flags;
+    void      (*alloc)(struct XenDevice *xendev);
+    int       (*init)(struct XenDevice *xendev);
+    int       (*initialise)(struct XenDevice *xendev);
+    void      (*connected)(struct XenDevice *xendev);
+    void      (*event)(struct XenDevice *xendev);
+    void      (*disconnect)(struct XenDevice *xendev);
+    int       (*free)(struct XenDevice *xendev);
+    void      (*backend_changed)(struct XenDevice *xendev, const char *node);
+    void      (*frontend_changed)(struct XenDevice *xendev, const char *node);
+    int       (*backend_register)(void);
+};
+
+struct XenDevice {
+    const char         *type;
+    int                dom;
+    int                dev;
+    char               name[64];
+    int                debug;
+
+    enum xenbus_state  be_state;
+    enum xenbus_state  fe_state;
+    int                online;
+    char               be[XEN_BUFSIZE];
+    char               *fe;
+    char               *protocol;
+    int                remote_port;
+    int                local_port;
+
+    xenevtchn_handle   *evtchndev;
+    xengnttab_handle   *gnttabdev;
+
+    struct XenDevOps   *ops;
+    QTAILQ_ENTRY(XenDevice) next;
+};
+
+/* ------------------------------------------------------------- */
+
+/* xenstore helper functions */
+int xenstore_write_str(const char *base, const char *node, const char *val);
+int xenstore_write_int(const char *base, const char *node, int ival);
+int xenstore_write_int64(const char *base, const char *node, int64_t ival);
+char *xenstore_read_str(const char *base, const char *node);
+int xenstore_read_int(const char *base, const char *node, int *ival);
+int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval);
+
+const char *xenbus_strstate(enum xenbus_state state);
+
+void xen_be_printf(struct XenDevice *xendev, int msg_level,
+                   const char *fmt, ...)  GCC_FMT_ATTR(3, 4);
+
+#endif /* QEMU_HW_XEN_PVDEV_H */