lib/igt_fb: Create AMD YUV buffers with AMD GEM IOCTL

The kmstest_dumb_create API isn't suitable for creating multi-planar
buffers since it tries to calculate the size based on the first plane's
pitch only.

AMDGPU requires that the luma pitch be aligned to 256 for YUV buffers
which results in crashes on kms_plane@pixel-format-pipe-*-planes tests
when using kmstest_dumb_create since the buffer returned is smaller than
needed (16384 size returned, 24576 size required).

Create and map the buffer with the correct size by using the AMD helpers
introduced by this patch: igt_amd_create_bo and igt_amd_mmap_bo.

Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Leo Li <sunpeng.li@amd.com>

1 files changed, 56 insertions, 0 deletions

diff --git a/lib/igt_amd.c b/lib/igt_amd.c
new file mode 100644
index 00000000..abd3ad96
--- /dev/null
+++ b/lib/igt_amd.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2019 Advanced Micro Devices, Inc.
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 "igt_amd.h"
+#include "igt.h"
+#include <amdgpu_drm.h>
+
+uint32_t igt_amd_create_bo(int fd, uint64_t size)
+{
+	union drm_amdgpu_gem_create create;
+
+	memset(&create, 0, sizeof(create));
+	create.in.bo_size = size;
+	create.in.alignment = 256;
+	create.in.domains = AMDGPU_GEM_DOMAIN_VRAM;
+	create.in.domain_flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED
+				 | AMDGPU_GEM_CREATE_VRAM_CLEARED;
+
+	do_ioctl(fd, DRM_IOCTL_AMDGPU_GEM_CREATE, &create);
+	igt_assert(create.out.handle);
+
+	return create.out.handle;
+}
+
+void *igt_amd_mmap_bo(int fd, uint32_t handle, uint64_t size, int prot)
+{
+	union drm_amdgpu_gem_mmap map;
+	void *ptr;
+
+	memset(&map, 0, sizeof(map));
+	map.in.handle = handle;
+
+	do_ioctl(fd, DRM_IOCTL_AMDGPU_GEM_MMAP, &map);
+
+	ptr = mmap(0, size, prot, MAP_SHARED, fd, map.out.addr_ptr);
+	return ptr == MAP_FAILED ? NULL : ptr;
+}