1 files changed, 148 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_batchbuffer.h b/src/gallium/drivers/i965/brw_batchbuffer.h
new file mode 100644
index 00000000000..6ca9f617f5e
--- /dev/null
+++ b/src/gallium/drivers/i965/brw_batchbuffer.h
@@ -0,0 +1,148 @@
+#ifndef BRW_BATCHBUFFER_H
+#define BRW_BATCHBUFFER_H
+
+#include "util/u_debug.h"
+
+#include "brw_types.h"
+#include "brw_winsys.h"
+#include "brw_reg.h"
+
+#define BATCH_SZ 16384
+#define BATCH_RESERVED 16
+
+/* All ignored:
+ */
+enum cliprect_mode {
+   IGNORE_CLIPRECTS,
+   LOOP_CLIPRECTS,
+   NO_LOOP_CLIPRECTS,
+   REFERENCES_CLIPRECTS
+};
+
+
+
+
+struct brw_batchbuffer {
+
+   struct brw_winsys_screen *sws;
+   struct brw_winsys_buffer *buf;
+   struct brw_chipset chipset;
+
+   /**
+    * Values exported to speed up the writing the batchbuffer,
+    * instead of having to go trough a accesor function for
+    * each dword written.
+    */
+   /*{@*/
+   uint8_t *map;
+   uint8_t *ptr;
+   size_t size;
+   struct {
+      uint8_t *end_ptr;
+   } emit;
+
+
+   size_t relocs;
+   size_t max_relocs;
+   /*@}*/
+};
+
+struct brw_batchbuffer *brw_batchbuffer_alloc( struct brw_winsys_screen *sws,
+                                               struct brw_chipset chipset );
+
+void brw_batchbuffer_free(struct brw_batchbuffer *batch);
+
+void _brw_batchbuffer_flush(struct brw_batchbuffer *batch,
+			      const char *file, int line);
+
+
+enum pipe_error
+brw_batchbuffer_reset(struct brw_batchbuffer *batch);
+
+
+/* Unlike bmBufferData, this currently requires the buffer be mapped.
+ * Consider it a convenience function wrapping multple
+ * intel_buffer_dword() calls.
+ */
+enum pipe_error brw_batchbuffer_data(struct brw_batchbuffer *batch,
+                            const void *data, GLuint bytes,
+			    enum cliprect_mode cliprect_mode);
+
+
+enum pipe_error brw_batchbuffer_emit_reloc(struct brw_batchbuffer *batch,
+			       struct brw_winsys_buffer *buffer,
+			       enum brw_buffer_usage usage,
+			       uint32_t offset);
+
+/* Inline functions - might actually be better off with these
+ * non-inlined.  Certainly better off switching all command packets to
+ * be passed as structs rather than dwords, but that's a little bit of
+ * work...
+ */
+static INLINE GLint
+brw_batchbuffer_space(struct brw_batchbuffer *batch)
+{
+   return (batch->size - BATCH_RESERVED) - (batch->ptr - batch->map);
+}
+
+
+static INLINE void
+brw_batchbuffer_emit_dword(struct brw_batchbuffer *batch, GLuint dword)
+{
+   assert(batch->map);
+   assert(brw_batchbuffer_space(batch) >= 4);
+   *(GLuint *) (batch->ptr) = dword;
+   batch->ptr += 4;
+}
+
+static INLINE enum pipe_error
+brw_batchbuffer_require_space(struct brw_batchbuffer *batch,
+                                GLuint sz)
+{
+   assert(sz < batch->size - 8);
+   if (brw_batchbuffer_space(batch) < sz) {
+      assert(0);
+      return PIPE_ERROR_OUT_OF_MEMORY;
+   }
+#ifdef DEBUG
+   batch->emit.end_ptr = batch->ptr + sz;
+#endif
+   return 0;
+}
+
+/* Here are the crusty old macros, to be removed:
+ */
+#define BEGIN_BATCH(n, cliprect_mode) do {				\
+      brw_batchbuffer_require_space(brw->batch, (n)*4);			\
+   } while (0)
+
+#define OUT_BATCH(d) brw_batchbuffer_emit_dword(brw->batch, d)
+
+#define OUT_RELOC(buf, usage, delta) do {				\
+      assert((unsigned) (delta) < buf->size);				\
+      brw_batchbuffer_emit_reloc(brw->batch, buf,			\
+				 usage, delta);				\
+   } while (0)
+
+#ifdef DEBUG
+#define ADVANCE_BATCH() do {						\
+      unsigned int _n = brw->batch->ptr - brw->batch->emit.end_ptr;	\
+      if (_n != 0) {							\
+	 debug_printf("%s: %d too many bytes emitted to batch\n",	\
+		      __FUNCTION__, _n);				\
+	 abort();							\
+      }									\
+      brw->batch->emit.end_ptr = NULL;					\
+   } while(0)
+#else
+#define ADVANCE_BATCH()
+#endif
+
+static INLINE void
+brw_batchbuffer_emit_mi_flush(struct brw_batchbuffer *batch)
+{
+   brw_batchbuffer_require_space(batch, 4);
+   brw_batchbuffer_emit_dword(batch, MI_FLUSH);
+}
+
+#endif