drivers/gpu/drm/i915/i915_selftest.h

   1 /*
   2  * Copyright © 2016 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #ifndef __I915_SELFTEST_H__
  25 #define __I915_SELFTEST_H__
  26
  27 struct pci_dev;
  28 struct drm_i915_private;
  29
  30 struct i915_selftest {
  31         unsigned long timeout_jiffies;
  32         unsigned int timeout_ms;
  33         unsigned int random_seed;
  34         int mock;
  35         int live;
  36 };
  37
  38 #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
  39 #include <linux/fault-inject.h>
  40
  41 extern struct i915_selftest i915_selftest;
  42
  43 int i915_mock_selftests(void);
  44 int i915_live_selftests(struct pci_dev *pdev);
  45
  46 /* We extract the function declarations from i915_mock_selftests.h and
  47  * i915_live_selftests.h Add your unit test declarations there!
  48  *
  49  * Mock unit tests are run very early upon module load, before the driver
  50  * is probed. All hardware interactions, as well as other subsystems, must
  51  * be "mocked".
  52  *
  53  * Live unit tests are run after the driver is loaded - all hardware
  54  * interactions are real.
  55  */
  56 #define selftest(name, func) int func(void);
  57 #include "selftests/i915_mock_selftests.h"
  58 #undef selftest
  59 #define selftest(name, func) int func(struct drm_i915_private *i915);
  60 #include "selftests/i915_live_selftests.h"
  61 #undef selftest
  62
  63 struct i915_subtest {
  64         int (*func)(void *data);
  65         const char *name;
  66 };
  67
  68 int __i915_subtests(const char *caller,
  69                     const struct i915_subtest *st,
  70                     unsigned int count,
  71                     void *data);
  72 #define i915_subtests(T, data) \
  73         __i915_subtests(__func__, T, ARRAY_SIZE(T), data)
  74
  75 #define SUBTEST(x) { x, #x }
  76
  77 #define I915_SELFTEST_DECLARE(x) x
  78 #define I915_SELFTEST_ONLY(x) unlikely(x)
  79
  80 #else /* !IS_ENABLED(CONFIG_DRM_I915_SELFTEST) */
  81
  82 static inline int i915_mock_selftests(void) { return 0; }
  83 static inline int i915_live_selftests(struct pci_dev *pdev) { return 0; }
  84
  85 #define I915_SELFTEST_DECLARE(x)
  86 #define I915_SELFTEST_ONLY(x) 0
  87
  88 #endif
  89
  90 /* Using the i915_selftest_ prefix becomes a little unwieldy with the helpers.
  91  * Instead we use the igt_ shorthand, in reference to the intel-gpu-tools
  92  * suite of uabi test cases (which includes a test runner for our selftests).
  93  */
  94
  95 #define IGT_TIMEOUT(name__) \
  96         unsigned long name__ = jiffies + i915_selftest.timeout_jiffies
  97
  98 __printf(2, 3)
  99 bool __igt_timeout(unsigned long timeout, const char *fmt, ...);
 100
 101 #define igt_timeout(t, fmt, ...) \
 102         __igt_timeout((t), KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
 103
 104 #endif /* !__I915_SELFTEST_H__ */