diff options
Diffstat (limited to 'tests/gem_mmap_gtt.c')
| -rw-r--r-- | tests/gem_mmap_gtt.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tests/gem_mmap_gtt.c b/tests/gem_mmap_gtt.c index c8a0bede..f6353555 100644 --- a/tests/gem_mmap_gtt.c +++ b/tests/gem_mmap_gtt.c @@ -309,6 +309,18 @@ test_write_gtt(int fd) munmap(src, OBJECT_SIZE); } +static bool is_coherent(int i915) +{ + int val = 1; /* by default, we assume GTT is coherent, hence the test */ + struct drm_i915_getparam gp = { + gp.param = 52, /* GTT_COHERENT */ + gp.value = &val, + }; + + ioctl(i915, DRM_IOCTL_I915_GETPARAM, &gp); + return val; +} + static void test_coherency(int fd) { @@ -316,6 +328,7 @@ test_coherency(int fd) uint32_t *gtt, *cpu; int i; + igt_require(is_coherent(fd)); igt_require(igt_setup_clflush()); handle = gem_create(fd, OBJECT_SIZE); |