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 #include <linux/types.h>
  28
  29 struct pci_dev;
  30 struct drm_i915_private;
  31
  32 struct i915_selftest {
  33         unsigned long timeout_jiffies;
  34         unsigned int timeout_ms;
  35         unsigned int random_seed;
  36         char *filter;
  37         int mock;
  38         int live;
  39         int perf;
  40 };
  41
  42 #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
  43 #include <linux/fault-inject.h>
  44
  45 extern struct i915_selftest i915_selftest;
  46
  47 int i915_mock_selftests(void);
  48 int i915_live_selftests(struct pci_dev *pdev);
  49 int i915_perf_selftests(struct pci_dev *pdev);
  50
  51 /* We extract the function declarations from i915_mock_selftests.h and
  52  * i915_live_selftests.h Add your unit test declarations there!
  53  *
  54  * Mock unit tests are run very early upon module load, before the driver
  55  * is probed. All hardware interactions, as well as other subsystems, must
  56  * be "mocked".
  57  *
  58  * Live unit tests are run after the driver is loaded - all hardware
  59  * interactions are real.
  60  */
  61 #define selftest(name, func) int func(void);
  62 #include "selftests/i915_mock_selftests.h"
  63 #undef selftest
  64 #define selftest(name, func) int func(struct drm_i915_private *i915);
  65 #include "selftests/i915_live_selftests.h"
  66 #include "selftests/i915_perf_selftests.h"
  67 #undef selftest
  68
  69 struct i915_subtest {
  70         int (*func)(void *data);
  71         const char *name;
  72 };
  73
  74 int __i915_nop_setup(void *data);
  75 int __i915_nop_teardown(int err, void *data);
  76
  77 int __i915_live_setup(void *data);
  78 int __i915_live_teardown(int err, void *data);
  79
  80 int __intel_gt_live_setup(void *data);
  81 int __intel_gt_live_teardown(int err, void *data);
  82
  83 int __i915_subtests(const char *caller,
  84                     int (*setup)(void *data),
  85                     int (*teardown)(int err, void *data),
  86                     const struct i915_subtest *st,
  87                     unsigned int count,
  88                     void *data);
  89 #define i915_subtests(T, data) \
  90         __i915_subtests(__func__, \
  91                         __i915_nop_setup, __i915_nop_teardown, \
  92                         T, ARRAY_SIZE(T), data)
  93 #define i915_live_subtests(T, data) ({ \
  94         typecheck(struct drm_i915_private *, data); \
  95         __i915_subtests(__func__, \
  96                         __i915_live_setup, __i915_live_teardown, \
  97                         T, ARRAY_SIZE(T), data); \
  98 })
  99 #define intel_gt_live_subtests(T, data) ({ \
 100         typecheck(struct intel_gt *, data); \
 101         __i915_subtests(__func__, \
 102                         __intel_gt_live_setup, __intel_gt_live_teardown, \
 103                         T, ARRAY_SIZE(T), data); \
 104 })
 105
 106 #define SUBTEST(x) { x, #x }
 107
 108 #define I915_SELFTEST_DECLARE(x) x
 109 #define I915_SELFTEST_ONLY(x) unlikely(x)
 110
 111 #else /* !IS_ENABLED(CONFIG_DRM_I915_SELFTEST) */
 112
 113 static inline int i915_mock_selftests(void) { return 0; }
 114 static inline int i915_live_selftests(struct pci_dev *pdev) { return 0; }
 115 static inline int i915_perf_selftests(struct pci_dev *pdev) { return 0; }
 116
 117 #define I915_SELFTEST_DECLARE(x)
 118 #define I915_SELFTEST_ONLY(x) 0
 119
 120 #endif
 121
 122 /* Using the i915_selftest_ prefix becomes a little unwieldy with the helpers.
 123  * Instead we use the igt_ shorthand, in reference to the intel-gpu-tools
 124  * suite of uabi test cases (which includes a test runner for our selftests).
 125  */
 126
 127 #define IGT_TIMEOUT(name__) \
 128         unsigned long name__ = jiffies + i915_selftest.timeout_jiffies
 129
 130 __printf(2, 3)
 131 bool __igt_timeout(unsigned long timeout, const char *fmt, ...);
 132
 133 #define igt_timeout(t, fmt, ...) \
 134         __igt_timeout((t), KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
 135
 136 void igt_hexdump(const void *buf, size_t len);
 137
 138 #endif /* !__I915_SELFTEST_H__ */