i915: Fork the shared code from i965.

Of this 15000 lines of code in intel/, we've identified 4000 lines that
are trivially unnecessary for i915, and another 1000 that are pointless for
i965, and expect to find more as time goes on.  Split the i915 driver off,
so that we can continue active development on i965 without worrying about
breaking i915.

Acked-by: Kenneth Graunke <[email protected]>
Acked-by: Chad Versace <[email protected]>
Acked-by: Adam Jackson <[email protected]>
(and I hear second hand that idr is OK with it, too)

1 files changed, 161 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i915/intel_regions.h b/src/mesa/drivers/dri/i915/intel_regions.h
new file mode 100644
index 00000000000..1fb6b275772
--- /dev/null
+++ b/src/mesa/drivers/dri/i915/intel_regions.h
@@ -0,0 +1,161 @@
+/**************************************************************************
+ * 
+ * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 INTEL_REGIONS_H
+#define INTEL_REGIONS_H
+
+/** @file intel_regions.h
+ *
+ * Structure definitions and prototypes for intel_region handling,
+ * which is the basic structure for rectangular collections of pixels
+ * stored in a drm_intel_bo.
+ */
+
+#include <stdbool.h>
+#include <xf86drm.h>
+
+#include "main/mtypes.h"
+#include "intel_bufmgr.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct intel_context;
+struct intel_screen;
+struct intel_buffer_object;
+
+/**
+ * A layer on top of the bufmgr buffers that adds a few useful things:
+ *
+ * - Refcounting for local buffer references.
+ * - Refcounting for buffer maps
+ * - Buffer dimensions - pitch and height.
+ * - Blitter commands for copying 2D regions between buffers. (really???)
+ */
+struct intel_region
+{
+   drm_intel_bo *bo;  /**< buffer manager's buffer */
+   GLuint refcount; /**< Reference count for region */
+   GLuint cpp;      /**< bytes per pixel */
+   GLuint width;    /**< in pixels */
+   GLuint height;   /**< in pixels */
+   GLuint pitch;    /**< in bytes */
+
+   uint32_t tiling; /**< Which tiling mode the region is in */
+
+   uint32_t name; /**< Global name for the bo */
+};
+
+
+/* Allocate a refcounted region.  Pointers to regions should only be
+ * copied by calling intel_reference_region().
+ */
+struct intel_region *intel_region_alloc(struct intel_screen *screen,
+                                        uint32_t tiling,
+					GLuint cpp, GLuint width,
+                                        GLuint height,
+					bool expect_accelerated_upload);
+
+struct intel_region *
+intel_region_alloc_for_handle(struct intel_screen *screen,
+			      GLuint cpp,
+			      GLuint width, GLuint height, GLuint pitch,
+			      unsigned int handle, const char *name);
+
+struct intel_region *
+intel_region_alloc_for_fd(struct intel_screen *screen,
+                          GLuint cpp,
+                          GLuint width, GLuint height, GLuint pitch,
+                          int fd, const char *name);
+
+bool
+intel_region_flink(struct intel_region *region, uint32_t *name);
+
+void intel_region_reference(struct intel_region **dst,
+                            struct intel_region *src);
+
+void intel_region_release(struct intel_region **ib);
+
+void intel_recreate_static_regions(struct intel_context *intel);
+
+void
+intel_region_get_tile_masks(struct intel_region *region,
+                            uint32_t *mask_x, uint32_t *mask_y,
+                            bool map_stencil_as_y_tiled);
+
+uint32_t
+intel_region_get_aligned_offset(struct intel_region *region, uint32_t x,
+                                uint32_t y, bool map_stencil_as_y_tiled);
+
+/**
+ * Used with images created with image_from_names
+ * to help support planar images.
+ */
+struct intel_image_format {
+   int fourcc;
+   int components;
+   int nplanes;
+   struct {
+      int buffer_index;
+      int width_shift;
+      int height_shift;
+      uint32_t dri_format;
+      int cpp;
+   } planes[3];
+};
+
+struct __DRIimageRec {
+   struct intel_region *region;
+   GLenum internal_format;
+   uint32_t dri_format;
+   GLuint format;
+   uint32_t offset;
+
+   /*
+    * Need to save these here between calls to
+    * image_from_names and calls to image_from_planar.
+    */
+   uint32_t strides[3];
+   uint32_t offsets[3];
+   struct intel_image_format *planar_format;
+
+   /* particular miptree level */
+   GLuint width;
+   GLuint height;
+   GLuint tile_x;
+   GLuint tile_y;
+   bool has_depthstencil;
+
+   void *data;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif