1 files changed, 124 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..76b3c1bf69a
--- /dev/null
+++ b/src/gallium/drivers/i965/brw_batchbuffer.h
@@ -0,0 +1,124 @@
+#ifndef BRW_BATCHBUFFER_H
+#define BRW_BATCHBUFFER_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
+};
+
+void brw_batchbuffer_free(struct brw_batchbuffer *batch);
+
+void _brw_batchbuffer_flush(struct brw_batchbuffer *batch,
+			      const char *file, int line);
+
+#define brw_batchbuffer_flush(batch) \
+	_brw_batchbuffer_flush(batch, __FILE__, __LINE__)
+
+void 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.
+ */
+void brw_batchbuffer_data(struct brw_batchbuffer *batch,
+                            const void *data, GLuint bytes,
+			    enum cliprect_mode cliprect_mode);
+
+void brw_batchbuffer_release_space(struct brw_batchbuffer *batch,
+                                     GLuint bytes);
+
+GLboolean brw_batchbuffer_emit_reloc(struct brw_batchbuffer *batch,
+                                       struct brw_winsys_buffer *buffer,
+				       uint32_t read_domains,
+				       uint32_t write_domain,
+				       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 boolean
+brw_batchbuffer_require_space(struct brw_batchbuffer *batch,
+                                GLuint sz,
+				enum cliprect_mode cliprect_mode)
+{
+   assert(sz < batch->size - 8);
+   if (brw_batchbuffer_space(batch) < sz) {
+      assert(0);
+      return FALSE;
+   }
+
+   /* All commands should be executed once regardless of cliprect
+    * mode.
+    */
+   (void)cliprect_mode;
+}
+
+/* Here are the crusty old macros, to be removed:
+ */
+#define BATCH_LOCALS
+
+#define BEGIN_BATCH(n, cliprect_mode) do {				\
+   brw_batchbuffer_require_space(intel->batch, (n)*4, cliprect_mode); \
+   assert(intel->batch->emit.start_ptr == NULL);			\
+   intel->batch->emit.total = (n) * 4;					\
+   intel->batch->emit.start_ptr = intel->batch->ptr;			\
+} while (0)
+
+#define OUT_BATCH(d) brw_batchbuffer_emit_dword(intel->batch, d)
+
+#define OUT_RELOC(buf, read_domains, write_domain, delta) do {		\
+   assert((unsigned) (delta) < buf->size);				\
+   brw_batchbuffer_emit_reloc(intel->batch, buf,			\
+				read_domains, write_domain, delta);	\
+} while (0)
+
+#define ADVANCE_BATCH() do {						\
+   unsigned int _n = intel->batch->ptr - intel->batch->emit.start_ptr;	\
+   assert(intel->batch->emit.start_ptr != NULL);			\
+   if (_n != intel->batch->emit.total) {				\
+      fprintf(stderr, "ADVANCE_BATCH: %d of %d dwords emitted\n",	\
+	      _n, intel->batch->emit.total);				\
+      abort();								\
+   }									\
+   intel->batch->emit.start_ptr = NULL;					\
+} while(0)
+
+
+static INLINE void
+brw_batchbuffer_emit_mi_flush(struct brw_batchbuffer *batch)
+{
+   brw_batchbuffer_require_space(batch, 4, IGNORE_CLIPRECTS);
+   brw_batchbuffer_emit_dword(batch, MI_FLUSH);
+}
+
+#endif