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 #endif /* !__I915_SELFTEST_H__ */
137