1 files changed, 42 insertions, 2 deletions
diff --git a/hw/display/framebuffer.h b/hw/display/framebuffer.h
index 6eae035b7d..38fa0dcec6 100644
--- a/hw/display/framebuffer.h
+++ b/hw/display/framebuffer.h
@@ -7,10 +7,50 @@
 
 typedef void (*drawfn)(void *, uint8_t *, const uint8_t *, int, int);
 
+/* framebuffer_update_memory_section: Update framebuffer
+ * #MemoryRegionSection, for example if the framebuffer is switched to
+ * a different memory area.
+ *
+ * @mem_section: Output #MemoryRegionSection, to be passed to
+ * framebuffer_update_display().
+ * @root: #MemoryRegion within which the framebuffer lies
+ * @base: Base address of the framebuffer within @root.
+ * @rows: Height of the screen.
+ * @src_width: Number of bytes in framebuffer memory between two rows.
+ */
+void framebuffer_update_memory_section(
+    MemoryRegionSection *mem_section,
+    MemoryRegion *root,
+    hwaddr base,
+    unsigned rows,
+    unsigned src_width);
+
+/* framebuffer_update_display: Draw the framebuffer on a surface.
+ *
+ * @ds: #DisplaySurface to draw to.
+ * @mem_section: #MemoryRegionSection provided by
+ * framebuffer_update_memory_section().
+ * @cols: Width the screen.
+ * @rows: Height of the screen.
+ * @src_width: Number of bytes in framebuffer memory between two rows.
+ * @dest_row_pitch: Number of bytes in the surface data between two rows.
+ * Negative if the framebuffer is stored in the opposite order (e.g.
+ * bottom-to-top) compared to the framebuffer.
+ * @dest_col_pitch: Number of bytes in the surface data between two pixels.
+ * Negative if the framebuffer is stored in the opposite order (e.g.
+ * right-to-left) compared to the framebuffer.
+ * @invalidate: True if the function should redraw the whole screen
+ * without checking the DIRTY_MEMORY_VGA dirty bitmap.
+ * @fn: Drawing function to be called for each row that has to be drawn.
+ * @opaque: Opaque pointer passed to @fn.
+ * @first_row: Pointer to an integer, receives the number of the first row
+ * that was drawn (either the first dirty row, or 0 if @invalidate is true).
+ * @last_row: Pointer to an integer, receives the number of the last row that
+ * was drawn (either the last dirty row, or @rows-1 if @invalidate is true).
+ */
 void framebuffer_update_display(
     DisplaySurface *ds,
-    MemoryRegion *address_space,
-    hwaddr base,
+    MemoryRegionSection *mem_section,
     int cols,
     int rows,
     int src_width,