1 files changed, 202 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_batchbuffer.c b/src/gallium/drivers/i965/brw_batchbuffer.c
new file mode 100644
index 00000000000..22607dc6083
--- /dev/null
+++ b/src/gallium/drivers/i965/brw_batchbuffer.c
@@ -0,0 +1,202 @@
+/**************************************************************************
+ * 
+ * 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.
+ * 
+ **************************************************************************/
+
+#include "util/u_memory.h"
+
+#include "brw_batchbuffer.h"
+#include "brw_reg.h"
+#include "brw_winsys.h"
+#include "brw_debug.h"
+#include "brw_structs.h"
+
+#define ALWAYS_EMIT_MI_FLUSH 1
+
+enum pipe_error
+brw_batchbuffer_reset(struct brw_batchbuffer *batch)
+{
+   enum pipe_error ret;
+
+   ret = batch->sws->bo_alloc( batch->sws,
+                               BRW_BUFFER_TYPE_BATCH,
+                               BRW_BATCH_SIZE, 4096,
+                               &batch->buf );
+   if (ret)
+      return ret;
+
+   batch->size = BRW_BATCH_SIZE;
+
+   /* With map_range semantics, the winsys can decide whether to
+    * inject a malloc'ed bounce buffer instead of mapping directly.
+    */
+   batch->map = batch->sws->bo_map(batch->buf,
+                                   BRW_DATA_BATCH_BUFFER,
+                                   0, batch->size,
+                                   GL_TRUE,
+                                   GL_TRUE,
+                                   GL_TRUE);
+
+   batch->ptr = batch->map;
+   return PIPE_OK;
+}
+
+struct brw_batchbuffer *
+brw_batchbuffer_alloc(struct brw_winsys_screen *sws,
+                      struct brw_chipset chipset)
+{
+   struct brw_batchbuffer *batch = CALLOC_STRUCT(brw_batchbuffer);
+
+   batch->sws = sws;
+   batch->chipset = chipset;
+   brw_batchbuffer_reset(batch);
+
+   return batch;
+}
+
+void
+brw_batchbuffer_free(struct brw_batchbuffer *batch)
+{
+   if (batch->map) {
+      batch->sws->bo_unmap(batch->buf);
+      batch->map = NULL;
+   }
+
+   bo_reference(&batch->buf, NULL);
+   FREE(batch);
+}
+
+
+void
+_brw_batchbuffer_flush(struct brw_batchbuffer *batch, 
+		       const char *file,
+		       int line)
+{
+   GLuint used = batch->ptr - batch->map;
+
+   if (used == 0)
+      return;
+
+   /* Post-swap throttling done by the state tracker.
+    */
+
+   if (BRW_DEBUG & DEBUG_BATCH)
+      debug_printf("%s:%d: Batchbuffer flush with %db used\n", 
+		   file, line, used);
+
+   if (ALWAYS_EMIT_MI_FLUSH) {
+      *(GLuint *) (batch->ptr) = MI_FLUSH | BRW_FLUSH_STATE_CACHE;
+      batch->ptr += 4;
+      used = batch->ptr - batch->map;
+   }
+
+   /* Round batchbuffer usage to 2 DWORDs. 
+    */
+   if ((used & 4) == 0) {
+      *(GLuint *) (batch->ptr) = 0; /* noop */
+      batch->ptr += 4;
+      used = batch->ptr - batch->map;
+   }
+
+   /* Mark the end of the buffer. 
+    */
+   *(GLuint *) (batch->ptr) = MI_BATCH_BUFFER_END;
+   batch->ptr += 4;
+   used = batch->ptr - batch->map;
+
+   batch->sws->bo_flush_range(batch->buf, 0, used);
+   batch->sws->bo_unmap(batch->buf);
+   batch->map = NULL;
+   batch->ptr = NULL;
+      
+   batch->sws->bo_exec(batch->buf, used );
+
+   if (BRW_DEBUG & DEBUG_SYNC) {
+      /* Abuse map/unmap to achieve wait-for-fence.
+       *
+       * XXX: hide this inside the winsys and export a fence
+       * interface.
+       */
+      debug_printf("waiting for idle\n");
+      batch->sws->bo_wait_idle(batch->buf);
+   }
+
+   /* Reset the buffer:
+    */
+   brw_batchbuffer_reset(batch);
+}
+
+
+/* The OUT_RELOC() macro ends up here, generating a relocation within
+ * the batch buffer.
+ */
+enum pipe_error
+brw_batchbuffer_emit_reloc(struct brw_batchbuffer *batch,
+			   struct brw_winsys_buffer *buffer,
+			   uint32_t usage,
+			   uint32_t delta)
+{
+   int ret;
+
+   if (batch->ptr - batch->map > batch->buf->size) {
+      debug_printf("bad relocation ptr %p map %p offset %d size %d\n",
+		   batch->ptr, batch->map, batch->ptr - batch->map, batch->buf->size);
+
+      return PIPE_ERROR_OUT_OF_MEMORY;
+   }
+
+   ret = batch->sws->bo_emit_reloc(batch->buf,
+				   usage,
+				   delta, 
+				   batch->ptr - batch->map,
+				   buffer);
+   if (ret != 0)
+      return ret;
+
+   /* bo_emit_reloc was resposible for writing a zero into the
+    * batchbuffer if necessary.  Just need to update our pointer.
+    */
+   batch->ptr += 4;
+
+   return 0;
+}
+
+enum pipe_error
+brw_batchbuffer_data(struct brw_batchbuffer *batch,
+                       const void *data, GLuint bytes,
+		       enum cliprect_mode cliprect_mode)
+{
+   enum pipe_error ret;
+
+   assert((bytes & 3) == 0);
+
+   ret = brw_batchbuffer_require_space(batch, bytes);
+   if (ret)
+      return ret;
+
+   memcpy(batch->ptr, data, bytes);
+   batch->ptr += bytes;
+   return 0;
+}