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_WARNING pr_fmt(fmt), ##__VA_ARGS__)
103 
104 #define igt_can_mi_store_dword_imm(D) (INTEL_GEN(D) > 2)
105 
106 #endif /* !__I915_SELFTEST_H__ */
107