- Update Xen patches to 3.3-rc5 and c/s 1157.

[linux-flexiantxendom0-3.2.10.git] / include / xen / interface / io / fbif.h

diff --git a/include/xen/interface/io/fbif.h b/include/xen/interface/io/fbif.h
index 974a51e..4d6dbca 100644 (file)
--- a/include/xen/interface/io/fbif.h
+++ b/include/xen/interface/io/fbif.h
@@ -77,13 +77,32 @@ union xenfb_out_event {
 
 /*
  * Frontends should ignore unknown in events.
- * No in events currently defined.
  */
 
+/*
+ * Framebuffer refresh period advice
+ * Backend sends it to advise the frontend their preferred period of
+ * refresh.  Frontends that keep the framebuffer constantly up-to-date
+ * just ignore it.  Frontends that use the advice should immediately
+ * refresh the framebuffer (and send an update notification event if
+ * those have been requested), then use the update frequency to guide
+ * their periodical refreshs.
+ */
+#define XENFB_TYPE_REFRESH_PERIOD 1
+#define XENFB_NO_REFRESH 0
+
+struct xenfb_refresh_period
+{
+    uint8_t type;    /* XENFB_TYPE_UPDATE_PERIOD */
+    uint32_t period; /* period of refresh, in ms,
+                      * XENFB_NO_REFRESH if no refresh is needed */
+};
+
 #define XENFB_IN_EVENT_SIZE 40
 
 union xenfb_in_event {
        uint8_t type;
+       struct xenfb_refresh_period refresh_period;
        char pad[XENFB_IN_EVENT_SIZE];
 };
 
@@ -127,7 +146,12 @@ struct xenfb_page {
         * Should be enough for a while with room leftover for
         * expansion.
         */
+#ifndef CONFIG_PARAVIRT_XEN
        unsigned long pd[256];
+#else
+       /* Two directory pages should be enough for a while. */
+       unsigned long pd[2];
+#endif
 };
 
 /*