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kms_frontbuffer_tracking: add farfromfence subtest

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Make sure we notice in case our crtc->y handling is still wrong.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
This commit is contained in:
Paulo Zanoni 2015-07-13 16:08:36 -03:00
parent cb3861a9e3
commit 04d1311fc3
1 changed files with 82 additions and 0 deletions
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82
tests/kms_frontbuffer_tracking.c
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@ -2248,6 +2248,72 @@ static void modesetfrombusy_subtest(const struct test_mode *t)
igt_remove_fb(drm.fd, &fb2);
}
/**
* farfromfence - test drawing as far from the fence start as possible
*
* METHOD
* One of the possible problems with FBC is that if the mode being displayed
* is very far away from the fence we might setup the hardware frontbuffer
* tracking in the wrong way. So this test tries to set a really tall FB,
* makes the CRTC point to the bottom of that FB, then it tries to exercise
* the hardware frontbuffer tracking through GTT mmap operations.
*
* EXPECTED RESULTS
* Everything succeeds.
*
* FAILURES
* If you're getting wrong CRC calulations, then the hardware tracking might
* be misconfigured and needs to be checked. If we're failing because FBC is
* disabled and the reason is that there's not enough stolen memory, then the
* Kernel might be calculating the amount of stolen memory needed based on the
* whole framebuffer size, and not just on the needed size: in this case, you
* need a newer Kernel.
*/
static void farfromfence_subtest(const struct test_mode *t)
{
int r;
struct igt_fb tall_fb;
struct modeset_params *params = pick_params(t);
struct draw_pattern_info *pattern = &pattern1;
struct fb_region *target;
int max_height;
switch (intel_gen(intel_get_drm_devid(drm.fd))) {
case 2:
max_height = 2048;
break;
case 3:
max_height = 4096;
break;
default:
max_height = 8192;
break;
}
prepare_subtest(t, pattern);
target = pick_target(t, params);
igt_create_fb(drm.fd, params->mode->hdisplay, max_height,
DRM_FORMAT_XRGB8888, LOCAL_I915_FORMAT_MOD_X_TILED,
&tall_fb);
igt_draw_fill_fb(drm.fd, &tall_fb, 0xFF);
params->fb.fb = &tall_fb;
params->fb.x = 0;
params->fb.y = max_height - params->mode->vdisplay;
set_mode_for_params(params);
do_assertions(0);
for (r = 0; r < pattern->n_rects; r++) {
draw_rect(pattern, target, t->method, r);
update_wanted_crc(t, &pattern->crcs[r]);
do_assertions(0);
}
igt_remove_fb(drm.fd, &tall_fb);
}
static void try_invalid_strides(void)
{
uint32_t gem_handle;
@ -2615,6 +2681,22 @@ int main(int argc, char *argv[])
multidraw_subtest(&t);
TEST_MODE_ITER_END
TEST_MODE_ITER_BEGIN(t)
if (t.pipes != PIPE_SINGLE)
continue;
if (t.screen != SCREEN_PRIM)
continue;
if (t.plane != PLANE_PRI)
continue;
if (t.fbs != FBS_INDIVIDUAL)
continue;
if (t.method != IGT_DRAW_MMAP_GTT)
continue;
igt_subtest_f("%s-farfromfence", feature_str(t.feature))
farfromfence_subtest(&t);
TEST_MODE_ITER_END
TEST_MODE_ITER_BEGIN(t)
if (t.pipes != PIPE_SINGLE)
continue;