[igt-dev] [RFC PATCH i-g-t] tests/prime_vgem: Skip MMAP_GTT based subtests if no mappable GGTT

[Janusz Krzysztofik]

As we've agreed that using GEM_MMAP* IOCTLs on dma-buf objects without
a CPU accessible GART is very questionable, we are probably not going
to extend our MMAP_OFFSET handler with an extra processing path
required for it to work correctly on dma-buf objects.  As a
consequence, on future hardware with no mappable aperture we won't be
able to use MMAP_OFFSET as a replacement of MMAP_GTT in tests which
examine PRIME import interface.  When running on that kind of hardware,
just skip subtests which depend on gem_mmap__gtt().

Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
 tests/prime_vgem.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tests/prime_vgem.c b/tests/prime_vgem.c
index 04cc913d..b92cf4f7 100644
--- a/tests/prime_vgem.c
+++ b/tests/prime_vgem.c
@@ -126,6 +126,8 @@ static void test_fence_mmap(int i915, int vgem)
 	int dmabuf, i;
 	int master[2], slave[2];
 
+	gem_require_mappable_ggtt(i915);
+
 	igt_assert(pipe(master) == 0);
 	igt_assert(pipe(slave) == 0);
 
@@ -210,6 +212,8 @@ static void test_gtt(int vgem, int i915)
 	uint32_t *ptr;
 	int dmabuf, i;
 
+	gem_require_mappable_ggtt(i915);
+
 	scratch.width = 1024;
 	scratch.height = 1024;
 	scratch.bpp = 32;
@@ -285,6 +289,7 @@ static void test_gtt_interleaved(int vgem, int i915)
 	uint32_t *ptr, *gtt;
 	int dmabuf, i;
 
+	gem_require_mappable_ggtt(i915);
 	igt_require(is_coherent(i915));
 
 	scratch.width = 1024;
-- 
2.21.0