1 files changed, 173 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_batchbuffer.h b/src/mesa/drivers/dri/intel/intel_batchbuffer.h
new file mode 100644
index 0000000000..ae53f45511
--- /dev/null
+++ b/src/mesa/drivers/dri/intel/intel_batchbuffer.h
@@ -0,0 +1,173 @@
+#ifndef INTEL_BATCHBUFFER_H
+#define INTEL_BATCHBUFFER_H
+
+#include "main/mtypes.h"
+
+#include "intel_context.h"
+#include "intel_bufmgr.h"
+#include "intel_reg.h"
+
+#define BATCH_SZ 16384
+#define BATCH_RESERVED 16
+
+
+struct intel_batchbuffer
+{
+   struct intel_context *intel;
+
+   drm_intel_bo *buf;
+
+   GLubyte *buffer;
+
+   GLubyte *map;
+   GLubyte *ptr;
+
+   GLuint size;
+   uint32_t state_batch_offset;
+
+#ifdef DEBUG
+   /** Tracking of BEGIN_BATCH()/OUT_BATCH()/ADVANCE_BATCH() debugging */
+   struct {
+      GLuint total;
+      GLubyte *start_ptr;
+   } emit;
+#endif
+
+   GLuint dirty_state;
+   GLuint reserved_space;
+};
+
+struct intel_batchbuffer *intel_batchbuffer_alloc(struct intel_context
+                                                  *intel);
+
+void intel_batchbuffer_free(struct intel_batchbuffer *batch);
+
+
+void _intel_batchbuffer_flush(struct intel_batchbuffer *batch,
+			      const char *file, int line);
+
+#define intel_batchbuffer_flush(batch) \
+	_intel_batchbuffer_flush(batch, __FILE__, __LINE__)
+
+void intel_batchbuffer_reset(struct intel_batchbuffer *batch);
+
+
+/* Unlike bmBufferData, this currently requires the buffer be mapped.
+ * Consider it a convenience function wrapping multple
+ * intel_buffer_dword() calls.
+ */
+void intel_batchbuffer_data(struct intel_batchbuffer *batch,
+                            const void *data, GLuint bytes);
+
+void intel_batchbuffer_release_space(struct intel_batchbuffer *batch,
+                                     GLuint bytes);
+
+GLboolean intel_batchbuffer_emit_reloc(struct intel_batchbuffer *batch,
+                                       drm_intel_bo *buffer,
+				       uint32_t read_domains,
+				       uint32_t write_domain,
+				       uint32_t offset);
+GLboolean intel_batchbuffer_emit_reloc_fenced(struct intel_batchbuffer *batch,
+					      drm_intel_bo *buffer,
+					      uint32_t read_domains,
+					      uint32_t write_domain,
+					      uint32_t offset);
+void intel_batchbuffer_emit_mi_flush(struct intel_batchbuffer *batch);
+
+static INLINE uint32_t float_as_int(float f)
+{
+   union {
+      float f;
+      uint32_t d;
+   } fi;
+
+   fi.f = f;
+   return fi.d;
+}
+
+/* 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
+intel_batchbuffer_space(struct intel_batchbuffer *batch)
+{
+   return (batch->state_batch_offset - batch->reserved_space) -
+      (batch->ptr - batch->map);
+}
+
+
+static INLINE void
+intel_batchbuffer_emit_dword(struct intel_batchbuffer *batch, GLuint dword)
+{
+#ifdef DEBUG
+   assert(intel_batchbuffer_space(batch) >= 4);
+#endif
+   *(GLuint *) (batch->ptr) = dword;
+   batch->ptr += 4;
+}
+
+static INLINE void
+intel_batchbuffer_emit_float(struct intel_batchbuffer *batch, float f)
+{
+   intel_batchbuffer_emit_dword(batch, float_as_int(f));
+}
+
+static INLINE void
+intel_batchbuffer_require_space(struct intel_batchbuffer *batch,
+                                GLuint sz)
+{
+#ifdef DEBUG
+   assert(sz < batch->size - 8);
+#endif
+   if (intel_batchbuffer_space(batch) < sz)
+      intel_batchbuffer_flush(batch);
+}
+
+static INLINE void
+intel_batchbuffer_begin(struct intel_batchbuffer *batch, int n)
+{
+   intel_batchbuffer_require_space(batch, n * 4);
+#ifdef DEBUG
+   assert(batch->map);
+   assert(batch->emit.start_ptr == NULL);
+   batch->emit.total = n * 4;
+   batch->emit.start_ptr = batch->ptr;
+#endif
+}
+
+static INLINE void
+intel_batchbuffer_advance(struct intel_batchbuffer *batch)
+{
+#ifdef DEBUG
+   unsigned int _n = batch->ptr - batch->emit.start_ptr;
+   assert(batch->emit.start_ptr != NULL);
+   if (_n != batch->emit.total) {
+      fprintf(stderr, "ADVANCE_BATCH: %d of %d dwords emitted\n",
+	      _n, batch->emit.total);
+      abort();
+   }
+   batch->emit.start_ptr = NULL;
+#endif
+}
+
+/* Here are the crusty old macros, to be removed:
+ */
+#define BATCH_LOCALS
+
+#define BEGIN_BATCH(n) intel_batchbuffer_begin(intel->batch, n)
+#define OUT_BATCH(d) intel_batchbuffer_emit_dword(intel->batch, d)
+#define OUT_BATCH_F(f) intel_batchbuffer_emit_float(intel->batch,f)
+#define OUT_RELOC(buf, read_domains, write_domain, delta) do {		\
+   intel_batchbuffer_emit_reloc(intel->batch, buf,			\
+				read_domains, write_domain, delta);	\
+} while (0)
+#define OUT_RELOC_FENCED(buf, read_domains, write_domain, delta) do {	\
+   intel_batchbuffer_emit_reloc_fenced(intel->batch, buf,		\
+				       read_domains, write_domain, delta); \
+} while (0)
+
+#define ADVANCE_BATCH() intel_batchbuffer_advance(intel->batch);
+
+#endif