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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#include <linux/random.h>
25
26#include "../i915_drv.h"
27#include "../i915_selftest.h"
28
29#include "igt_flush_test.h"
30
31struct i915_selftest i915_selftest __read_mostly = {
32 .timeout_ms = 1000,
33};
34
35int i915_mock_sanitycheck(void)
36{
37 pr_info(DRIVER_NAME ": %s() - ok!\n", __func__);
38 return 0;
39}
40
41int i915_live_sanitycheck(struct drm_i915_private *i915)
42{
43 pr_info("%s: %s() - ok!\n", i915->drm.driver->name, __func__);
44 return 0;
45}
46
47enum {
48#define selftest(name, func) mock_##name,
49#include "i915_mock_selftests.h"
50#undef selftest
51};
52
53enum {
54#define selftest(name, func) live_##name,
55#include "i915_live_selftests.h"
56#undef selftest
57};
58
59struct selftest {
60 bool enabled;
61 const char *name;
62 union {
63 int (*mock)(void);
64 int (*live)(struct drm_i915_private *);
65 };
66};
67
68#define selftest(n, f) [mock_##n] = { .name = #n, { .mock = f } },
69static struct selftest mock_selftests[] = {
70#include "i915_mock_selftests.h"
71};
72#undef selftest
73
74#define selftest(n, f) [live_##n] = { .name = #n, { .live = f } },
75static struct selftest live_selftests[] = {
76#include "i915_live_selftests.h"
77};
78#undef selftest
79
80/* Embed the line number into the parameter name so that we can order tests */
81#define selftest(n, func) selftest_0(n, func, param(n))
82#define param(n) __PASTE(igt__, __PASTE(__LINE__, __mock_##n))
83#define selftest_0(n, func, id) \
84module_param_named(id, mock_selftests[mock_##n].enabled, bool, 0400);
85#include "i915_mock_selftests.h"
86#undef selftest_0
87#undef param
88
89#define param(n) __PASTE(igt__, __PASTE(__LINE__, __live_##n))
90#define selftest_0(n, func, id) \
91module_param_named(id, live_selftests[live_##n].enabled, bool, 0400);
92#include "i915_live_selftests.h"
93#undef selftest_0
94#undef param
95#undef selftest
96
97static void set_default_test_all(struct selftest *st, unsigned int count)
98{
99 unsigned int i;
100
101 for (i = 0; i < count; i++)
102 if (st[i].enabled)
103 return;
104
105 for (i = 0; i < count; i++)
106 st[i].enabled = true;
107}
108
109static int __run_selftests(const char *name,
110 struct selftest *st,
111 unsigned int count,
112 void *data)
113{
114 int err = 0;
115
116 while (!i915_selftest.random_seed)
117 i915_selftest.random_seed = get_random_int();
118
119 i915_selftest.timeout_jiffies =
120 i915_selftest.timeout_ms ?
121 msecs_to_jiffies_timeout(i915_selftest.timeout_ms) :
122 MAX_SCHEDULE_TIMEOUT;
123
124 set_default_test_all(st, count);
125
126 pr_info(DRIVER_NAME ": Performing %s selftests with st_random_seed=0x%x st_timeout=%u\n",
127 name, i915_selftest.random_seed, i915_selftest.timeout_ms);
128
129 /* Tests are listed in order in i915_*_selftests.h */
130 for (; count--; st++) {
131 if (!st->enabled)
132 continue;
133
134 cond_resched();
135 if (signal_pending(current))
136 return -EINTR;
137
138 pr_info(DRIVER_NAME ": Running %s\n", st->name);
139 if (data)
140 err = st->live(data);
141 else
142 err = st->mock();
143 if (err == -EINTR && !signal_pending(current))
144 err = 0;
145 if (err)
146 break;
147 }
148
149 if (WARN(err > 0 || err == -ENOTTY,
150 "%s returned %d, conflicting with selftest's magic values!\n",
151 st->name, err))
152 err = -1;
153
154 return err;
155}
156
157#define run_selftests(x, data) \
158 __run_selftests(#x, x##_selftests, ARRAY_SIZE(x##_selftests), data)
159
160int i915_mock_selftests(void)
161{
162 int err;
163
164 if (!i915_selftest.mock)
165 return 0;
166
167 err = run_selftests(mock, NULL);
168 if (err) {
169 i915_selftest.mock = err;
170 return err;
171 }
172
173 if (i915_selftest.mock < 0) {
174 i915_selftest.mock = -ENOTTY;
175 return 1;
176 }
177
178 return 0;
179}
180
181int i915_live_selftests(struct pci_dev *pdev)
182{
183 int err;
184
185 if (!i915_selftest.live)
186 return 0;
187
188 err = run_selftests(live, pdev_to_i915(pdev));
189 if (err) {
190 i915_selftest.live = err;
191 return err;
192 }
193
194 if (i915_selftest.live < 0) {
195 i915_selftest.live = -ENOTTY;
196 return 1;
197 }
198
199 return 0;
200}
201
202static bool apply_subtest_filter(const char *caller, const char *name)
203{
204 char *filter, *sep, *tok;
205 bool result = true;
206
207 filter = kstrdup(i915_selftest.filter, GFP_KERNEL);
208 for (sep = filter; (tok = strsep(&sep, ","));) {
209 bool allow = true;
210 char *sl;
211
212 if (*tok == '!') {
213 allow = false;
214 tok++;
215 }
216
217 if (*tok == '\0')
218 continue;
219
220 sl = strchr(tok, '/');
221 if (sl) {
222 *sl++ = '\0';
223 if (strcmp(tok, caller)) {
224 if (allow)
225 result = false;
226 continue;
227 }
228 tok = sl;
229 }
230
231 if (strcmp(tok, name)) {
232 if (allow)
233 result = false;
234 continue;
235 }
236
237 result = allow;
238 break;
239 }
240 kfree(filter);
241
242 return result;
243}
244
245int __i915_nop_setup(void *data)
246{
247 return 0;
248}
249
250int __i915_nop_teardown(int err, void *data)
251{
252 return err;
253}
254
255int __i915_live_setup(void *data)
256{
257 struct drm_i915_private *i915 = data;
258
259 return intel_gt_terminally_wedged(&i915->gt);
260}
261
262int __i915_live_teardown(int err, void *data)
263{
264 struct drm_i915_private *i915 = data;
265
266 mutex_lock(&i915->drm.struct_mutex);
267 if (igt_flush_test(i915, I915_WAIT_LOCKED))
268 err = -EIO;
269 mutex_unlock(&i915->drm.struct_mutex);
270
271 i915_gem_drain_freed_objects(i915);
272
273 return err;
274}
275
276int __intel_gt_live_setup(void *data)
277{
278 struct intel_gt *gt = data;
279
280 return intel_gt_terminally_wedged(gt);
281}
282
283int __intel_gt_live_teardown(int err, void *data)
284{
285 struct intel_gt *gt = data;
286
287 mutex_lock(>->i915->drm.struct_mutex);
288 if (igt_flush_test(gt->i915, I915_WAIT_LOCKED))
289 err = -EIO;
290 mutex_unlock(>->i915->drm.struct_mutex);
291
292 i915_gem_drain_freed_objects(gt->i915);
293
294 return err;
295}
296
297int __i915_subtests(const char *caller,
298 int (*setup)(void *data),
299 int (*teardown)(int err, void *data),
300 const struct i915_subtest *st,
301 unsigned int count,
302 void *data)
303{
304 int err;
305
306 for (; count--; st++) {
307 cond_resched();
308 if (signal_pending(current))
309 return -EINTR;
310
311 if (!apply_subtest_filter(caller, st->name))
312 continue;
313
314 err = setup(data);
315 if (err) {
316 pr_err(DRIVER_NAME "/%s: setup failed for %s\n",
317 caller, st->name);
318 return err;
319 }
320
321 pr_info(DRIVER_NAME ": Running %s/%s\n", caller, st->name);
322 GEM_TRACE("Running %s/%s\n", caller, st->name);
323
324 err = teardown(st->func(data), data);
325 if (err && err != -EINTR) {
326 pr_err(DRIVER_NAME "/%s: %s failed with error %d\n",
327 caller, st->name, err);
328 return err;
329 }
330 }
331
332 return 0;
333}
334
335bool __igt_timeout(unsigned long timeout, const char *fmt, ...)
336{
337 va_list va;
338
339 if (!signal_pending(current)) {
340 cond_resched();
341 if (time_before(jiffies, timeout))
342 return false;
343 }
344
345 if (fmt) {
346 va_start(va, fmt);
347 vprintk(fmt, va);
348 va_end(va);
349 }
350
351 return true;
352}
353
354module_param_named(st_random_seed, i915_selftest.random_seed, uint, 0400);
355module_param_named(st_timeout, i915_selftest.timeout_ms, uint, 0400);
356module_param_named(st_filter, i915_selftest.filter, charp, 0400);
357
358module_param_named_unsafe(mock_selftests, i915_selftest.mock, int, 0400);
359MODULE_PARM_DESC(mock_selftests, "Run selftests before loading, using mock hardware (0:disabled [default], 1:run tests then load driver, -1:run tests then exit module)");
360
361module_param_named_unsafe(live_selftests, i915_selftest.live, int, 0400);
362MODULE_PARM_DESC(live_selftests, "Run selftests after driver initialisation on the live system (0:disabled [default], 1:run tests then continue, -1:run tests then exit module)");