static int igt_global_reset(void *arg)
{
struct drm_i915_private *i915 = arg;
unsigned int reset_count;
int err = 0;
/* Check that we can issue a global GPU reset */
igt_global_reset_lock(i915);
set_bit(I915_RESET_HANDOFF, &i915->gpu_error.flags);
mutex_lock(&i915->drm.struct_mutex);
reset_count = i915_reset_count(&i915->gpu_error);
i915_reset(i915, ALL_ENGINES, NULL);
if (i915_reset_count(&i915->gpu_error) == reset_count) {
pr_err("No GPU reset recorded!\n");
err = -EINVAL;
}
mutex_unlock(&i915->drm.struct_mutex);
GEM_BUG_ON(test_bit(I915_RESET_HANDOFF, &i915->gpu_error.flags));
igt_global_reset_unlock(i915);
if (i915_terminally_wedged(&i915->gpu_error))
err = -EIO;
return err;
}
int intel_reset_live_selftests(struct drm_i915_private *i915)
{
static const struct i915_subtest tests[] = {
SUBTEST(igt_global_reset), /* attempt to recover GPU first */
SUBTEST(igt_wedged_reset),
SUBTEST(igt_atomic_reset),
};
intel_wakeref_t wakeref;
int err = 0;
if (!intel_has_gpu_reset(i915))
return 0;
if (i915_terminally_wedged(i915))
return -EIO; /* we're long past hope of a successful reset */
with_intel_runtime_pm(i915, wakeref)
err = i915_subtests(tests, i915);
return err;
}
static int igt_hang_sanitycheck(void *arg)
{
struct drm_i915_private *i915 = arg;
struct i915_request *rq;
struct intel_engine_cs *engine;
enum intel_engine_id id;
struct hang h;
int err;
/* Basic check that we can execute our hanging batch */
mutex_lock(&i915->drm.struct_mutex);
err = hang_init(&h, i915);
if (err)
goto unlock;
for_each_engine(engine, i915, id) {
struct igt_wedge_me w;
long timeout;
if (!intel_engine_can_store_dword(engine))
continue;
rq = hang_create_request(&h, engine);
if (IS_ERR(rq)) {
err = PTR_ERR(rq);
pr_err("Failed to create request for %s, err=%d\n",
engine->name, err);
goto fini;
}
i915_request_get(rq);
*h.batch = MI_BATCH_BUFFER_END;
i915_gem_chipset_flush(i915);
i915_request_add(rq);
timeout = 0;
igt_wedge_on_timeout(&w, i915, HZ / 10 /* 100ms timeout*/)
timeout = i915_request_wait(rq,
I915_WAIT_LOCKED,
MAX_SCHEDULE_TIMEOUT);
if (i915_terminally_wedged(&i915->gpu_error))
timeout = -EIO;
i915_request_put(rq);
if (timeout < 0) {
err = timeout;
pr_err("Wait for request failed on %s, err=%d\n",
engine->name, err);
goto fini;
}
}
fini:
hang_fini(&h);
unlock:
mutex_unlock(&i915->drm.struct_mutex);
return err;
}