1 files changed, 246 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_resource_buffer.h b/src/gallium/drivers/svga/svga_resource_buffer.h
new file mode 100644
index 0000000000..55e7321184
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_resource_buffer.h
@@ -0,0 +1,246 @@
+/**********************************************************
+ * 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_transfer.h"
+
+#include "util/u_double_list.h"
+
+#include "svga_screen_cache.h"
+
+
+/**
+ * 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;
+
+
+extern struct u_resource_vtbl svga_buffer_vtbl;
+
+struct svga_buffer_range
+{
+   unsigned start;
+   unsigned end;
+};
+
+
+/**
+ * SVGA pipe buffer.
+ */
+struct svga_buffer 
+{
+   struct u_resource b;
+
+   /**
+    * 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;
+   
+   /**
+    * 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;
+
+   /**
+    * Information about ongoing and past map operations.
+    */
+   struct {
+      /**
+       * Number of concurrent mappings.
+       *
+       * XXX: It is impossible to guarantee concurrent maps work in all
+       * circumstances -- pipe_buffers really need transfer objects too.
+       */
+      unsigned count;
+
+      /**
+       * Whether this buffer is currently mapped for writing.
+       */
+      boolean writing;
+
+      /**
+       * Whether the application will tell us explicity which ranges it touched
+       * or not.
+       */
+      boolean flush_explicit;
+
+      /**
+       * Dirty ranges.
+       *
+       * Ranges that were touched by the application and need to be uploaded to
+       * the host.
+       *
+       * This information will be copied into dma.boxes, when emiting the
+       * SVGA3dCmdSurfaceDMA command.
+       */
+      struct svga_buffer_range ranges[SVGA_BUFFER_MAX_RANGES];
+      unsigned num_ranges;
+   } map;
+
+   /**
+    * Information about uploaded version of user buffers.
+    */
+   struct {
+      struct pipe_resource *buffer;
+
+      /**
+       * We combine multiple user buffers into the same hardware buffer. This
+       * is the relative offset within that buffer.
+       */
+      unsigned offset;
+   } uploaded;
+
+   /**
+    * DMA'ble memory.
+    *
+    * A piece of GMR memory, with the same size of the buffer. It is created
+    * when mapping the buffer, and will be used to upload vertex data to the
+    * host.
+    */
+   struct svga_winsys_buffer *hwbuf;
+
+   /**
+    * Information about pending DMA uploads.
+    *
+    */
+   struct {
+      /**
+       * Whether this buffer has an unfinished DMA upload command.
+       *
+       * If not set then the rest of the information is null.
+       */
+      boolean pending;
+
+      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;
+   } dma;
+
+   /**
+    * Linked list head, used to gather all buffers with pending dma uploads on
+    * a context. It is only valid if the dma.pending is set above.
+    */
+   struct list_head head;
+};
+
+
+static INLINE struct svga_buffer *
+svga_buffer(struct pipe_resource *buffer)
+{
+   if (buffer) {
+      assert(((struct svga_buffer *)buffer)->b.vtbl == &svga_buffer_vtbl);
+      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_resource *buffer )
+{
+   return svga_buffer(buffer)->user;
+}
+
+
+
+
+struct pipe_resource *
+svga_user_buffer_create(struct pipe_screen *screen,
+                        void *ptr,
+                        unsigned bytes,
+			unsigned usage);
+
+struct pipe_resource *
+svga_buffer_create(struct pipe_screen *screen,
+		   const struct pipe_resource *template);
+
+
+
+/**
+ * Get the host surface handle for this buffer.
+ *
+ * This will ensure the host surface is updated, issuing DMAs as needed.
+ *
+ * NOTE: This may insert new commands in the context, so it *must* be called
+ * before reserving command buffer space. And, in order to insert commands
+ * it may need to call svga_context_flush().
+ */
+struct svga_winsys_surface *
+svga_buffer_handle(struct svga_context *svga,
+                   struct pipe_resource *buf);
+
+void
+svga_context_flush_buffers(struct svga_context *svga);
+
+struct svga_winsys_buffer *
+svga_winsys_buffer_create(struct svga_screen *ss,
+                          unsigned alignment, 
+                          unsigned usage,
+                          unsigned size);
+
+#endif /* SVGA_BUFFER_H */