1 files changed, 190 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_screen_buffer.h b/src/gallium/drivers/svga/svga_screen_buffer.h
new file mode 100644
index 0000000000..5d7af5a7c5
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_screen_buffer.h
@@ -0,0 +1,190 @@
+/**********************************************************
+ * Copyright 2008-2009 VMware, Inc.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ **********************************************************/
+
+#ifndef SVGA_BUFFER_H
+#define SVGA_BUFFER_H
+
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_state.h"
+
+#include "util/u_double_list.h"
+
+#include "svga_screen_cache.h"
+
+
+#define SVGA_BUFFER_MAGIC 0x344f9005
+
+/**
+ * Maximum number of discontiguous ranges
+ */
+#define SVGA_BUFFER_MAX_RANGES 32
+
+
+struct svga_screen;
+struct svga_context;
+struct svga_winsys_buffer;
+struct svga_winsys_surface;
+
+
+struct svga_buffer_range
+{
+   unsigned start;
+   unsigned end;
+};
+
+
+/**
+ * Describe a
+ *
+ * This holds the information to emit a SVGA3dCmdSurfaceDMA.
+ */
+struct svga_buffer_upload
+{
+   /**
+    * Guest memory region.
+    */
+   struct svga_winsys_buffer *buf;
+
+   struct svga_buffer_range ranges[SVGA_BUFFER_MAX_RANGES];
+   unsigned num_ranges;
+
+   SVGA3dSurfaceDMAFlags flags;
+
+   /**
+    * Pointer to the DMA copy box *inside* the command buffer.
+    */
+   SVGA3dCopyBox *boxes;
+
+   /**
+    * Context that has the pending DMA to this buffer.
+    */
+   struct svga_context *svga;
+};
+
+
+/**
+ * SVGA pipe buffer.
+ */
+struct svga_buffer 
+{
+   struct pipe_buffer base;
+
+   /** 
+    * Marker to detect bad casts in runtime.
+    */ 
+   uint32_t magic;
+
+   /**
+    * Regular (non DMA'able) memory.
+    * 
+    * Used for user buffers or for buffers which we know before hand that can
+    * never be used by the virtual hardware directly, such as constant buffers.
+    */
+   void *swbuf;
+   
+   /** 
+    * Whether swbuf was created by the user or not.
+    */
+   boolean user;
+   
+   /**
+    * DMA'ble memory.
+    * 
+    * A piece of GMR memory. It is created when mapping the buffer, and will be
+    * used to upload/download vertex data from the host.
+    */
+   struct svga_buffer_upload hw;
+
+   /**
+    * Creation key for the host surface handle.
+    * 
+    * This structure describes all the host surface characteristics so that it 
+    * can be looked up in cache, since creating a host surface is often a slow
+    * operation.
+    */
+   struct svga_host_surface_cache_key key;
+   
+   /**
+    * Host surface handle.
+    * 
+    * This is a platform independent abstraction for host SID. We create when 
+    * trying to bind
+    */
+   struct svga_winsys_surface *handle;
+   
+   struct {
+      unsigned count;
+      boolean writing;
+      boolean flush_explicit;
+   } map;
+   
+   boolean needs_flush;
+   struct list_head head;
+};
+
+
+static INLINE struct svga_buffer *
+svga_buffer(struct pipe_buffer *buffer)
+{
+   if (buffer) {
+      assert(((struct svga_buffer *)buffer)->magic == SVGA_BUFFER_MAGIC);
+      return (struct svga_buffer *)buffer;
+   }
+   return NULL;
+}
+
+
+/**
+ * Returns TRUE for user buffers.  We may
+ * decide to use an alternate upload path for these buffers.
+ */
+static INLINE boolean 
+svga_buffer_is_user_buffer( struct pipe_buffer *buffer )
+{
+   return svga_buffer(buffer)->user;
+}
+
+
+void
+svga_screen_init_buffer_functions(struct pipe_screen *screen);
+
+struct svga_winsys_surface *
+svga_buffer_handle(struct svga_context *svga,
+                   struct pipe_buffer *buf);
+
+void
+svga_context_flush_buffers(struct svga_context *svga);
+
+boolean
+svga_buffer_free_cached_hw_storage(struct svga_screen *ss);
+
+struct svga_winsys_buffer *
+svga_winsys_buffer_create(struct svga_screen *ss,
+                          unsigned alignment, 
+                          unsigned usage,
+                          unsigned size);
+
+#endif /* SVGA_BUFFER_H */