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tests/kms_frontbuffer_tracking: add modesetfrombusy test

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This test exercies the dev_priv->fb_tracking.busy_bits bug I recently
found and Daniel fixed.

Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
This commit is contained in:
Paulo Zanoni 2015-06-22 19:18:29 -03:00
parent de774ed31e
commit ce3b47bac8
1 changed files with 113 additions and 0 deletions
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113
tests/kms_frontbuffer_tracking.c
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@ -27,6 +27,7 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <pthread.h>
#include "drmtest.h"
#include "igt_aux.h"
@ -259,6 +260,19 @@ struct {
struct igt_fb big;
} fbs;
struct {
pthread_t thread;
bool stop;
uint32_t handle;
uint32_t size;
uint32_t stride;
int width;
int height;
} busy_thread = {
.stop = true,
};
static drmModeModeInfoPtr get_connector_smallest_mode(drmModeConnectorPtr c)
{
int i;
@ -876,6 +890,41 @@ static void disable_features(void)
psr_disable();
}
static void *busy_thread_func(void *data)
{
while (!busy_thread.stop)
igt_draw_rect(drm.fd, drm.bufmgr, NULL, busy_thread.handle,
busy_thread.size, busy_thread.stride,
IGT_DRAW_BLT, 0, 0, busy_thread.width,
busy_thread.height, 0xFF);
pthread_exit(0);
}
static void start_busy_thread(struct igt_fb *fb)
{
int rc;
igt_assert(busy_thread.stop == true);
busy_thread.stop = false;
busy_thread.handle = fb->gem_handle;
busy_thread.size = fb->size;
busy_thread.stride = fb->stride;
busy_thread.width = fb->width;
busy_thread.height = fb->height;
rc = pthread_create(&busy_thread.thread, NULL, busy_thread_func, NULL);
igt_assert(rc == 0);
}
static void stop_busy_thread(void)
{
if (!busy_thread.stop) {
busy_thread.stop = true;
igt_assert(pthread_join(busy_thread.thread, NULL) == 0);
}
}
static void print_crc(const char *str, struct both_crcs *crc)
{
int i;
@ -1199,6 +1248,8 @@ static void setup_environment(void)
static void teardown_environment(void)
{
stop_busy_thread();
teardown_crcs();
teardown_psr();
teardown_fbc();
@ -1481,6 +1532,8 @@ static void prepare_subtest(const struct test_mode *t,
{
check_test_requirements(t);
stop_busy_thread();
disable_features();
set_crtc_fbs(t);
@ -1964,6 +2017,50 @@ static void fullscreen_plane_subtest(const struct test_mode *t)
igt_remove_fb(drm.fd, &fullscreen_fb);
}
/**
* modesetfrombusy - modeset from a busy buffer to a non-busy buffer
*
* METHOD
* Set a mode, make the frontbuffer busy using BLT writes, do a modeset to a
* non-busy buffer, then check if the features are enabled. The goal of this
* test is to exercise a bug we had on the frontbuffer tracking infrastructure
* code.
*
* EXPECTED RESULTS
* No assertions fail.
*
* FAILURES
* If you're failing this test, then you probably need "drm/i915: Clear
* fb_tracking.busy_bits also for synchronous flips" or any other patch that
* properly updates dev_priv->fb_tracking.busy_bits when we're alternating
* between buffers with different busyness.
*/
static void modesetfrombusy_subtest(const struct test_mode *t)
{
struct draw_pattern_info *pattern = &pattern1;
struct modeset_params *params = pick_params(t);
struct igt_fb fb2;
prepare_subtest(t, pattern);
igt_create_fb(drm.fd, params->fb.fb->width, params->fb.fb->height,
DRM_FORMAT_XRGB8888, LOCAL_I915_FORMAT_MOD_X_TILED, &fb2);
igt_draw_fill_fb(drm.fd, &fb2, 0xFF);
start_busy_thread(params->fb.fb);
usleep(10000);
unset_all_crtcs();
params->fb.fb = &fb2;
set_mode_for_params(params);
do_assertions(0);
stop_busy_thread();
igt_remove_fb(drm.fd, &fb2);
}
static int opt_handler(int option, int option_index, void *data)
{
switch (option) {
@ -2248,6 +2345,22 @@ 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_SINGLE)
continue;
if (t.method != IGT_DRAW_MMAP_CPU)
continue;
igt_subtest_f("%s-modesetfrombusy", feature_str(t.feature))
modesetfrombusy_subtest(&t);
TEST_MODE_ITER_END
/*
* TODO: ideas for subtests:
* - Add a new enum to struct test_mode that allows us to specify the