[igt-dev] [PATCH i-g-t v7 3/5] lib/rendercopy_bufmgr: Add rendercopy buffer manager

["Zbigniew Kempczyński" <zbigniew.kempczynski@intel.com>]

This is middle layer between render copy tests and buffer operations
(buf_ops). Render copy tests uses libdrm so adding wrapper to independent
buf_ops was necessary.

Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Katarzyna Dec <katarzyna.dec@intel.com>
---
 lib/Makefile.sources    |   2 +
 lib/meson.build         |   1 +
 lib/rendercopy_bufmgr.c | 175 ++++++++++++++++++++++++++++++++++++++++
 lib/rendercopy_bufmgr.h |  28 +++++++
 4 files changed, 206 insertions(+)
 create mode 100644 lib/rendercopy_bufmgr.c
 create mode 100644 lib/rendercopy_bufmgr.h

diff --git a/lib/Makefile.sources b/lib/Makefile.sources
index da34eae7..feb8c20d 100644
--- a/lib/Makefile.sources
+++ b/lib/Makefile.sources
@@ -95,6 +95,8 @@ lib_source_list =	 	\
 	gen7_render.h		\
 	gen8_render.h		\
 	gen9_render.h		\
+	rendercopy_bufmgr.c	\
+	rendercopy_bufmgr.h	\
 	rendercopy_gen4.c	\
 	rendercopy_gen6.c	\
 	rendercopy_gen7.c	\
diff --git a/lib/meson.build b/lib/meson.build
index cf3e35da..3bf39915 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -39,6 +39,7 @@ lib_sources = [
 	'gpu_cmds.c',
 	'rendercopy_i915.c',
 	'rendercopy_i830.c',
+	'rendercopy_bufmgr.c',
 	'rendercopy_gen4.c',
 	'rendercopy_gen6.c',
 	'rendercopy_gen7.c',
diff --git a/lib/rendercopy_bufmgr.c b/lib/rendercopy_bufmgr.c
new file mode 100644
index 00000000..19d3a03e
--- /dev/null
+++ b/lib/rendercopy_bufmgr.c
@@ -0,0 +1,175 @@
+/*
+ * Copyright © 2020 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include <sys/ioctl.h>
+#include "igt.h"
+#include "igt_x86.h"
+#include "rendercopy_bufmgr.h"
+
+/**
+ * SECTION:rendercopy_bufmgr
+ * @short_description: Render copy buffer manager
+ * @title: Render copy bufmgr
+ * @include: igt.h
+ *
+ * # Rendercopy buffer manager
+ *
+ * Rendercopy depends on libdrm and igt_buf, so some middle layer to intel_buf
+ * and buf_ops is required.
+ *
+ * |[<!-- language="c" -->
+ * struct rendercopy_bufmgr *bmgr;
+ * ...
+ * bmgr = rendercopy_bufmgr_create(fd, bufmgr);
+ * ...
+ * igt_buf_init(bmgr, &buf, 512, 512, 32, I915_TILING_X, false);
+ * ...
+ * linear_to_igt_buf(bmgr, &buf, linear);
+ * ...
+ * igt_buf_to_linear(bmgr, &buf, linear);
+ * ...
+ * rendercopy_bufmgr_destroy(bmgr);
+ * ]|
+ */
+
+struct rendercopy_bufmgr {
+	int fd;
+	drm_intel_bufmgr *bufmgr;
+	struct buf_ops *bops;
+};
+
+static void __igt_buf_to_intel_buf(struct igt_buf *buf, struct intel_buf *ibuf)
+{
+	ibuf->handle = buf->bo->handle;
+	ibuf->stride = buf->surface[0].stride;
+	ibuf->tiling = buf->tiling;
+	ibuf->bpp = buf->bpp;
+	ibuf->size = buf->surface[0].size;
+	ibuf->compression = buf->compression;
+	ibuf->aux.offset = buf->ccs[0].offset;
+	ibuf->aux.stride = buf->ccs[0].stride;
+}
+
+void igt_buf_to_linear(struct rendercopy_bufmgr *bmgr, struct igt_buf *buf,
+		       uint32_t *linear)
+{
+	struct intel_buf ibuf;
+
+	__igt_buf_to_intel_buf(buf, &ibuf);
+
+	intel_buf_to_linear(bmgr->bops, &ibuf, linear);
+}
+
+void linear_to_igt_buf(struct rendercopy_bufmgr *bmgr, struct igt_buf *buf,
+		       uint32_t *linear)
+{
+	struct intel_buf ibuf;
+
+	__igt_buf_to_intel_buf(buf, &ibuf);
+
+	linear_to_intel_buf(bmgr->bops, &ibuf, linear);
+}
+
+struct rendercopy_bufmgr *rendercopy_bufmgr_create(int fd,
+						   drm_intel_bufmgr *bufmgr)
+{
+	struct buf_ops *bops;
+	struct rendercopy_bufmgr *bmgr;
+
+	igt_assert(bufmgr);
+
+	bops = buf_ops_create(fd);
+	igt_assert(bops);
+
+	bmgr = calloc(1, sizeof(*bmgr));
+	igt_assert(bmgr);
+
+	bmgr->fd = fd;
+	bmgr->bufmgr = bufmgr;
+	bmgr->bops = bops;
+
+	return bmgr;
+}
+
+void rendercopy_bufmgr_destroy(struct rendercopy_bufmgr *bmgr)
+{
+	igt_assert(bmgr);
+	igt_assert(bmgr->bops);
+
+	buf_ops_destroy(bmgr->bops);
+	free(bmgr);
+}
+
+bool rendercopy_bufmgr_set_software_tiling(struct rendercopy_bufmgr *bmgr,
+					   uint32_t tiling,
+					   bool use_software_tiling)
+{
+	return buf_ops_set_software_tiling(bmgr->bops, tiling,
+					   use_software_tiling);
+}
+
+void igt_buf_init(struct rendercopy_bufmgr *bmgr, struct igt_buf *buf,
+		  int width, int height, int bpp,
+		  uint32_t tiling, uint32_t compression)
+{
+	struct intel_buf ibuf;
+	int size;
+	int ccs_width, ccs_height;
+	uint32_t devid;
+	int generation;
+
+	devid = intel_get_drm_devid(bmgr->fd);
+	generation = intel_gen(devid);
+
+	igt_assert(buf);
+	memset(buf, 0, sizeof(*buf));
+
+	buf->surface[0].stride = ALIGN(width * (bpp / 8), 128);
+	buf->surface[0].size = buf->surface[0].stride * height;
+	buf->tiling = tiling;
+	buf->bpp = bpp;
+	buf->compression = compression;
+
+	ccs_width = igt_buf_intel_ccs_width(generation, buf);
+	ccs_height = igt_buf_intel_ccs_height(generation, buf);
+
+	size = buf->surface[0].stride * ALIGN(height, 32);
+
+	if (compression) {
+		buf->ccs[0].offset = buf->surface[0].stride * ALIGN(height, 32);
+		buf->ccs[0].stride = ccs_width;
+		size = buf->ccs[0].offset + ccs_width * ccs_height;
+	}
+
+	buf->bo = drm_intel_bo_alloc(bmgr->bufmgr, "", size, 4096);
+
+	intel_buf_init_using_handle(bmgr->bops,
+				    buf->bo->handle,
+				    &ibuf,
+				    width, height, bpp, tiling,
+				    compression);
+
+	buf->ccs[0].offset = ibuf.aux.offset;
+	buf->ccs[0].stride = ibuf.aux.stride;
+}
diff --git a/lib/rendercopy_bufmgr.h b/lib/rendercopy_bufmgr.h
new file mode 100644
index 00000000..f4e5118c
--- /dev/null
+++ b/lib/rendercopy_bufmgr.h
@@ -0,0 +1,28 @@
+#ifndef __RENDERCOPY_BUFMGR_H__
+#define __RENDERCOPY_BUFMGR_H__
+
+#include <stdint.h>
+#include "intel_bufops.h"
+#include "intel_batchbuffer.h"
+
+struct rendercopy_bufmgr;
+
+struct rendercopy_bufmgr *rendercopy_bufmgr_create(int fd,
+						   drm_intel_bufmgr *bufmgr);
+void rendercopy_bufmgr_destroy(struct rendercopy_bufmgr *bmgr);
+
+bool rendercopy_bufmgr_set_software_tiling(struct rendercopy_bufmgr *bmgr,
+					   uint32_t tiling,
+					   bool use_software_tiling);
+
+void igt_buf_to_linear(struct rendercopy_bufmgr *bmgr, struct igt_buf *buf,
+		       uint32_t *linear);
+
+void linear_to_igt_buf(struct rendercopy_bufmgr *bmgr, struct igt_buf *buf,
+		       uint32_t *linear);
+
+void igt_buf_init(struct rendercopy_bufmgr *bmgr, struct igt_buf *buf,
+		  int width, int height, int bpp,
+		  uint32_t tiling, uint32_t compression);
+
+#endif
-- 
2.23.0

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