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kms_frontbuffer_tracking: implement badstride test

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Test strides that are either completely invalid or just result in
disabled FBC.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
This commit is contained in:
Paulo Zanoni 2015-07-10 17:53:25 -03:00
parent 4deb562659
commit cb3861a9e3
1 changed files with 69 additions and 0 deletions
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69
tests/kms_frontbuffer_tracking.c
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@ -2248,6 +2248,71 @@ static void modesetfrombusy_subtest(const struct test_mode *t)
igt_remove_fb(drm.fd, &fb2);
}
static void try_invalid_strides(void)
{
uint32_t gem_handle;
int rc;
/* Sizes that the Kernel shouldn't even allow for tiled */
gem_handle = gem_create(drm.fd, 2048);
/* Smaller than 512, yet still 64-byte aligned. */
rc = __gem_set_tiling(drm.fd, gem_handle, I915_TILING_X, 448);
igt_assert(rc == -EINVAL);
/* Bigger than 512, but not 64-byte aligned. */
rc = __gem_set_tiling(drm.fd, gem_handle, I915_TILING_X, 1022);
igt_assert(rc == -EINVAL);
/* Just make sure something actually works. */
rc = __gem_set_tiling(drm.fd, gem_handle, I915_TILING_X, 1024);
igt_assert(rc == 0);
gem_close(drm.fd, gem_handle);
}
/**
* badstride - try to use buffers with strides that are not supported
*
* METHOD
* First we try to create buffers with strides that are not allowed for tiled
* surfaces and assert the Kernel rejects them. Then we create buffers with
* strides that are allowed by the Kernel, but that are incompatible with FBC
* and we assert that FBC stays disabled after we set a mode on those buffers.
*
* EXPECTED RESULTS
* The invalid strides are rejected, and the valid strides that are
* incompatible with FBC result in FBC disabled.
*
* FAILURES
* There are two possible places where the Kernel can be broken: either the
* code that checks valid strides for tiled buffers or the code that checks
* the valid strides for FBC.
*/
static void badstride_subtest(const struct test_mode *t)
{
struct igt_fb wide_fb;
struct modeset_params *params = pick_params(t);
try_invalid_strides();
prepare_subtest(t, &pattern4);
igt_create_fb(drm.fd, params->fb.fb->width + 4096,
params->fb.fb->height, DRM_FORMAT_XRGB8888,
LOCAL_I915_FORMAT_MOD_X_TILED, &wide_fb);
igt_assert(wide_fb.stride > 16384);
igt_draw_fill_fb(drm.fd, &wide_fb, 0xFF);
params->fb.fb = &wide_fb;
set_mode_for_params(params);
do_assertions(ASSERT_FBC_DISABLED);
igt_remove_fb(drm.fd, &wide_fb);
}
static int opt_handler(int option, int option_index, void *data)
{
switch (option) {
@ -2564,6 +2629,10 @@ int main(int argc, char *argv[])
igt_subtest_f("%s-modesetfrombusy", feature_str(t.feature))
modesetfrombusy_subtest(&t);
if (t.feature & FEATURE_FBC)
igt_subtest_f("%s-badstride", feature_str(t.feature))
badstride_subtest(&t);
TEST_MODE_ITER_END
/*