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[linux.git] / drivers / gpu / drm / i915 / selftests / igt_flush_test.c
1 /*
2  * SPDX-License-Identifier: MIT
3  *
4  * Copyright © 2018 Intel Corporation
5  */
6
7 #include "../i915_drv.h"
8
9 #include "../i915_selftest.h"
10 #include "igt_flush_test.h"
11
12 int igt_flush_test(struct drm_i915_private *i915, unsigned int flags)
13 {
14         int ret = i915_terminally_wedged(i915) ? -EIO : 0;
15         int repeat = !!(flags & I915_WAIT_LOCKED);
16
17         cond_resched();
18
19         do {
20                 if (i915_gem_wait_for_idle(i915, flags, HZ / 5) == -ETIME) {
21                         pr_err("%pS timed out, cancelling all further testing.\n",
22                                __builtin_return_address(0));
23
24                         GEM_TRACE("%pS timed out.\n",
25                                   __builtin_return_address(0));
26                         GEM_TRACE_DUMP();
27
28                         i915_gem_set_wedged(i915);
29                         repeat = 0;
30                         ret = -EIO;
31                 }
32
33                 /* Ensure we also flush after wedging. */
34                 if (flags & I915_WAIT_LOCKED)
35                         i915_retire_requests(i915);
36         } while (repeat--);
37
38         return ret;
39 }