[igt-dev] [PATCH i-g-t 03/18] lib/intel_batchbuffer: add intel_bb_blit_copy wrapper

[Dominik Grzegorzek]

This patch adds intel_bb_copy_intel_buf to make copying a whole
intel_buf easier and more readable.

Signed-off-by: Dominik Grzegorzek <dominik.grzegorzek at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>
---
 lib/intel_batchbuffer.c | 23 +++++++++++++++++++++++
 lib/intel_batchbuffer.h |  3 +++
 2 files changed, 26 insertions(+)

diff --git a/lib/intel_batchbuffer.c b/lib/intel_batchbuffer.c
index 079d6389..770bfef4 100644
--- a/lib/intel_batchbuffer.c
+++ b/lib/intel_batchbuffer.c
@@ -2545,6 +2545,29 @@ void intel_bb_blt_copy(struct intel_bb *ibb,
 	intel_bb_flush_blit(ibb);
 }
 
+/**
+ * intel_bb_copy_intel_buf:
+ * @batch: batchbuffer object
+ * @src: source buffer (intel_buf)
+ * @dst: destination libdrm buffer object
+ * @size: size of the copy range in bytes
+ *
+ * Emits a copy operation using blitter commands into the supplied batch.
+ * A total of @size bytes from the start of @src is copied
+ * over to @dst. Note that @size must be page-aligned.
+ */
+void intel_bb_copy_intel_buf(struct intel_bb *ibb,
+			     struct intel_buf *src, struct intel_buf *dst,
+			     long int size)
+{
+	igt_assert(size % 4096 == 0);
+
+	intel_bb_blt_copy(ibb,
+			  src, 0, 0, 4096,
+			  dst, 0, 0, 4096,
+			  4096/4, size/4096, 32);
+}
+
 /**
  * igt_get_huc_copyfunc:
  * @devid: pci device id
diff --git a/lib/intel_batchbuffer.h b/lib/intel_batchbuffer.h
index cbfbe25f..a23ba9af 100644
--- a/lib/intel_batchbuffer.h
+++ b/lib/intel_batchbuffer.h
@@ -654,6 +654,9 @@ void intel_bb_blt_copy(struct intel_bb *ibb,
 		       struct intel_buf *dst,
 		       int dst_x1, int dst_y1, int dst_pitch,
 		       int width, int height, int bpp);
+void intel_bb_copy_intel_buf(struct intel_bb *ibb,
+			     struct intel_buf *dst, struct intel_buf *src,
+			     long int size);
 
 /**
  * igt_huc_copyfunc_t:
-- 
2.20.1