1 files changed, 139 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/intel/gem/intel_be_batchbuffer.c b/src/gallium/winsys/drm/intel/gem/intel_be_batchbuffer.c
new file mode 100644
index 0000000000..e83a4c42cd
--- /dev/null
+++ b/src/gallium/winsys/drm/intel/gem/intel_be_batchbuffer.c
@@ -0,0 +1,139 @@
+
+#include "intel_be_batchbuffer.h"
+#include "intel_be_context.h"
+#include "intel_be_device.h"
+#include "intel_be_fence.h"
+#include <errno.h>
+
+#include "util/u_memory.h"
+
+struct intel_be_batchbuffer *
+intel_be_batchbuffer_alloc(struct intel_be_context *intel)
+{
+	struct intel_be_batchbuffer *batch = CALLOC_STRUCT(intel_be_batchbuffer);
+
+
+	batch->base.buffer = NULL;
+	batch->base.winsys = &intel->base;
+	batch->base.map = NULL;
+	batch->base.ptr = NULL;
+	batch->base.size = 0;
+	batch->base.actual_size = intel->device->max_batch_size;
+	batch->base.relocs = 0;
+	batch->base.max_relocs = INTEL_DEFAULT_RELOCS;
+
+	batch->base.map = malloc(batch->base.actual_size);
+	memset(batch->base.map, 0, batch->base.actual_size);
+
+	batch->base.ptr = batch->base.map;
+
+	intel_be_batchbuffer_reset(batch);
+
+	return batch;
+}
+
+void
+intel_be_batchbuffer_reset(struct intel_be_batchbuffer *batch)
+{
+	struct intel_be_context *intel = intel_be_context(batch->base.winsys);
+	struct intel_be_device *dev = intel->device;
+
+	if (batch->bo)
+		drm_intel_bo_unreference(batch->bo);
+
+	memset(batch->base.map, 0, batch->base.actual_size);
+	batch->base.ptr = batch->base.map;
+	batch->base.size = batch->base.actual_size - BATCH_RESERVED;
+
+	batch->base.relocs = 0;
+	batch->base.max_relocs = INTEL_DEFAULT_RELOCS;
+
+	batch->bo = drm_intel_bo_alloc(dev->pools.gem,
+	                               "gallium3d_batch_buffer",
+	                               batch->base.actual_size, 0);
+}
+
+int
+intel_be_offset_relocation(struct intel_be_batchbuffer *batch,
+			   unsigned pre_add,
+			   drm_intel_bo *bo,
+			   uint32_t read_domains,
+			   uint32_t write_domain)
+{
+	unsigned offset;
+	int ret = 0;
+
+	assert(batch->base.relocs < batch->base.max_relocs);
+
+	offset = (unsigned)(batch->base.ptr - batch->base.map);
+	batch->base.ptr += 4;
+
+	ret = drm_intel_bo_emit_reloc(bo, pre_add,
+	                              batch->bo, offset,
+	                              read_domains,
+	                              write_domain);
+
+	if (!ret)
+		batch->base.relocs++;
+
+	return ret;
+}
+
+void
+intel_be_batchbuffer_flush(struct intel_be_batchbuffer *batch,
+			   struct intel_be_fence **fence)
+{
+	struct i915_batchbuffer *i915 = &batch->base;
+	unsigned used = 0;
+	int ret = 0;
+
+	assert(i915_batchbuffer_space(i915) >= 0);
+
+	used = batch->base.ptr - batch->base.map;
+	assert((used & 3) == 0);
+
+	if (used & 4) {
+		((uint32_t *) batch->base.ptr)[0] = ((0<<29)|(4<<23)); // MI_FLUSH;
+		((uint32_t *) batch->base.ptr)[1] = 0;
+		((uint32_t *) batch->base.ptr)[2] = (0xA<<23); // MI_BATCH_BUFFER_END;
+		batch->base.ptr += 12;
+	} else {
+		((uint32_t *) batch->base.ptr)[0] = ((0<<29)|(4<<23)); // MI_FLUSH;
+		((uint32_t *) batch->base.ptr)[1] = (0xA<<23); // MI_BATCH_BUFFER_END;
+		batch->base.ptr += 8;
+	}
+
+	used = batch->base.ptr - batch->base.map;
+
+	drm_intel_bo_subdata(batch->bo, 0, used, batch->base.map);
+	ret = drm_intel_bo_exec(batch->bo, used, NULL, 0, 0);
+
+	assert(ret == 0);
+
+	intel_be_batchbuffer_reset(batch);
+
+	if (fence) {
+		if (*fence)
+			intel_be_fence_unreference(*fence);
+
+		(*fence) = CALLOC_STRUCT(intel_be_fence);
+		(*fence)->refcount = 1;
+		(*fence)->bo = NULL;
+	}
+}
+
+void
+intel_be_batchbuffer_finish(struct intel_be_batchbuffer *batch)
+{
+
+}
+
+void
+intel_be_batchbuffer_free(struct intel_be_batchbuffer *batch)
+{
+	if (batch->bo)
+		drm_intel_bo_unreference(batch->bo);
+
+	free(batch->base.map);
+	free(batch);
+}