Add Intel i965G/Q DRI driver.

This driver comes from Tungsten Graphics, with a few further modifications by
Intel.

1 files changed, 289 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/intel_regions.c b/src/mesa/drivers/dri/i965/intel_regions.c
new file mode 100644
index 0000000000..e2cb427304
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/intel_regions.c
@@ -0,0 +1,289 @@
+/**************************************************************************
+ * 
+ * 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.
+ * 
+ **************************************************************************/
+
+/* Provide additional functionality on top of bufmgr buffers:
+ *   - 2d semantics and blit operations
+ *   - refcounting of buffers for multiple images in a buffer.
+ *   - refcounting of buffer mappings.
+ *   - some logic for moving the buffers to the best memory pools for
+ *     given operations.
+ *
+ * Most of this is to make it easier to implement the fixed-layout
+ * mipmap tree required by intel hardware in the face of GL's
+ * programming interface where each image can be specifed in random
+ * order and it isn't clear what layout the tree should have until the
+ * last moment.
+ */
+
+#include "intel_context.h"
+#include "intel_regions.h"
+#include "intel_blit.h"
+#include "bufmgr.h"
+#include "imports.h"
+
+/* XXX: Thread safety?
+ */
+GLubyte *intel_region_map(struct intel_context *intel, struct intel_region *region)
+{
+   DBG("%s\n", __FUNCTION__);
+   if (!region->map_refcount++) {
+      region->map = bmMapBuffer(intel, region->buffer, 0);
+   }
+
+   return region->map;
+}
+
+void intel_region_unmap(struct intel_context *intel, 
+			struct intel_region *region)
+{
+   DBG("%s\n", __FUNCTION__);
+   if (!--region->map_refcount) {
+      bmUnmapBufferAUB(intel, region->buffer, 0, 0);
+      region->map = NULL;
+   }
+}
+
+struct intel_region *intel_region_alloc( struct intel_context *intel, 
+					 GLuint cpp,
+					 GLuint pitch, 
+					 GLuint height )
+{
+   struct intel_region *region = calloc(sizeof(*region), 1);
+
+   DBG("%s %dx%dx%d == 0x%x bytes\n", __FUNCTION__,
+       cpp, pitch, height, cpp*pitch*height);
+
+   region->cpp = cpp;
+   region->pitch = pitch;
+   region->height = height; 	/* needed? */
+   region->refcount = 1;
+
+   bmGenBuffers(intel, "tex", 1, &region->buffer);
+   bmBufferData(intel, region->buffer, pitch * cpp * height, NULL, 0);
+
+   return region;
+}
+
+void intel_region_reference( struct intel_region **dst,
+			     struct intel_region *src)
+{
+   src->refcount++;
+   assert(*dst == NULL);
+   *dst = src;
+}
+
+void intel_region_release( struct intel_context *intel,
+			   struct intel_region **region )
+{
+   if (!*region)
+      return;
+
+   DBG("%s %d\n", __FUNCTION__, (*region)->refcount-1);
+   
+   if (--(*region)->refcount == 0) {
+      assert((*region)->map_refcount == 0);
+      bmDeleteBuffers(intel, 1, &(*region)->buffer);
+      free(*region);
+   }
+   *region = NULL;
+}
+
+
+struct intel_region *intel_region_create_static( struct intel_context *intel, 
+						 GLuint mem_type,
+						 GLuint offset,
+						 void *virtual,
+						 GLuint cpp,
+						 GLuint pitch, 
+						 GLuint height,
+						 GLboolean tiled )
+{
+   struct intel_region *region = calloc(sizeof(*region), 1);
+   GLuint size = cpp * pitch * height;
+   GLint pool;
+
+   DBG("%s\n", __FUNCTION__);
+
+   region->cpp = cpp;
+   region->pitch = pitch;
+   region->height = height; 	/* needed? */
+   region->refcount = 1;
+   region->tiled = tiled;
+
+   /* Recipe for creating a static buffer - create a static pool with
+    * the right offset and size, generate a buffer and use a special
+    * call to bind it to all of the memory in that pool.
+    */
+   pool = bmInitPool(intel, offset, virtual, size, 
+		     (BM_MEM_AGP |
+		      BM_NO_UPLOAD | 
+		      BM_NO_EVICT | 
+		      BM_NO_MOVE));
+   if (pool < 0) {
+      _mesa_printf("bmInitPool failed for static region\n");
+      exit(1);
+   }
+
+   region->buffer = bmGenBufferStatic(intel, pool);
+
+   return region;
+}
+
+
+
+
+void _mesa_copy_rect( GLubyte *dst,
+		      GLuint cpp,
+		      GLuint dst_pitch,
+		      GLuint dst_x, 
+		      GLuint dst_y,
+		      GLuint width,
+		      GLuint height,
+		      const GLubyte *src,
+		      GLuint src_pitch,
+		      GLuint src_x,
+		      GLuint src_y )
+{
+   GLuint i;
+
+   dst_pitch *= cpp;
+   src_pitch *= cpp;
+   dst += dst_x * cpp;
+   src += src_x * cpp;
+   dst += dst_y * dst_pitch;
+   src += src_y * dst_pitch;
+   width *= cpp;
+
+   if (width == dst_pitch && 
+       width == src_pitch)
+      do_memcpy(dst, src, height * width);
+   else {
+      for (i = 0; i < height; i++) {
+	 do_memcpy(dst, src, width);
+	 dst += dst_pitch;
+	 src += src_pitch;
+      }
+   }
+}
+
+
+/* Upload data to a rectangular sub-region.  Lots of choices how to do this:
+ *
+ * - memcpy by span to current destination
+ * - upload data as new buffer and blit
+ *
+ * Currently always memcpy.
+ */
+void intel_region_data(struct intel_context *intel, 
+		       struct intel_region *dst,
+		       GLuint dst_offset,
+		       GLuint dstx, GLuint dsty,
+		       const void *src, GLuint src_pitch,
+		       GLuint srcx, GLuint srcy,
+		       GLuint width, GLuint height)
+{
+   
+   DBG("%s\n", __FUNCTION__);
+
+   if (width == dst->pitch && 
+       width == src_pitch &&
+       dst_offset == 0 &&
+       height == dst->height &&
+       srcx == 0 &&
+       srcy == 0) 
+   {
+      bmBufferDataAUB(intel,
+		      dst->buffer,
+		      dst->cpp * width * dst->height,
+		      src,
+		      0,
+		      0, /* DW_NOTYPE */
+		      0);
+   }
+   else {
+      assert (dst_offset + dstx + width + 
+	      (dsty + height - 1) * dst->pitch * dst->cpp <= 
+	      dst->pitch * dst->cpp * dst->height);
+
+      _mesa_copy_rect(intel_region_map(intel, dst) + dst_offset,
+		      dst->cpp,
+		      dst->pitch,
+		      dstx, dsty,
+		      width, height,
+		      src,
+		      src_pitch,
+		      srcx, srcy);      
+
+      intel_region_unmap(intel, dst);
+   }
+}
+			  
+/* Copy rectangular sub-regions. Need better logic about when to
+ * push buffers into AGP - will currently do so whenever possible.
+ */
+void intel_region_copy( struct intel_context *intel,
+			struct intel_region *dst,
+			GLuint dst_offset,
+			GLuint dstx, GLuint dsty,
+			struct intel_region *src,
+			GLuint src_offset,
+			GLuint srcx, GLuint srcy,
+			GLuint width, GLuint height )
+{
+   DBG("%s\n", __FUNCTION__);
+
+   assert(src->cpp == dst->cpp);
+
+   intelEmitCopyBlit(intel,
+		     dst->cpp,
+		     src->pitch, src->buffer, src_offset, src->tiled,
+		     dst->pitch, dst->buffer, dst_offset, dst->tiled,
+		     srcx, srcy,
+		     dstx, dsty,
+		     width, height);
+}
+
+/* Fill a rectangular sub-region.  Need better logic about when to
+ * push buffers into AGP - will currently do so whenever possible.
+ */
+void intel_region_fill( struct intel_context *intel,
+			struct intel_region *dst,
+			GLuint dst_offset,
+			GLuint dstx, GLuint dsty,
+			GLuint width, GLuint height,
+			GLuint color )
+{
+   DBG("%s\n", __FUNCTION__);
+   
+   intelEmitFillBlit(intel,
+		     dst->cpp,
+		     dst->pitch, dst->buffer, dst_offset, dst->tiled,
+		     dstx, dsty,
+		     width, height,
+		     color );
+}
+