1c349dbc7Sjsg /*
2c349dbc7Sjsg * Copyright © 2016 Intel Corporation
3c349dbc7Sjsg *
4c349dbc7Sjsg * Permission is hereby granted, free of charge, to any person obtaining a
5c349dbc7Sjsg * copy of this software and associated documentation files (the "Software"),
6c349dbc7Sjsg * to deal in the Software without restriction, including without limitation
7c349dbc7Sjsg * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8c349dbc7Sjsg * and/or sell copies of the Software, and to permit persons to whom the
9c349dbc7Sjsg * Software is furnished to do so, subject to the following conditions:
10c349dbc7Sjsg *
11c349dbc7Sjsg * The above copyright notice and this permission notice (including the next
12c349dbc7Sjsg * paragraph) shall be included in all copies or substantial portions of the
13c349dbc7Sjsg * Software.
14c349dbc7Sjsg *
15c349dbc7Sjsg * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16c349dbc7Sjsg * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17c349dbc7Sjsg * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18c349dbc7Sjsg * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19c349dbc7Sjsg * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20c349dbc7Sjsg * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21c349dbc7Sjsg * IN THE SOFTWARE.
22c349dbc7Sjsg */
23c349dbc7Sjsg
24c349dbc7Sjsg #include <linux/random.h>
25c349dbc7Sjsg
26c349dbc7Sjsg #include "gt/intel_gt_pm.h"
27*f005ef32Sjsg #include "gt/uc/intel_gsc_fw.h"
28*f005ef32Sjsg
291bb76ff1Sjsg #include "i915_driver.h"
30c349dbc7Sjsg #include "i915_drv.h"
31c349dbc7Sjsg #include "i915_selftest.h"
32c349dbc7Sjsg
33c349dbc7Sjsg #include "igt_flush_test.h"
34c349dbc7Sjsg
35c349dbc7Sjsg struct i915_selftest i915_selftest __read_mostly = {
36c349dbc7Sjsg .timeout_ms = 500,
37c349dbc7Sjsg };
38c349dbc7Sjsg
i915_mock_sanitycheck(void)39c349dbc7Sjsg int i915_mock_sanitycheck(void)
40c349dbc7Sjsg {
41c349dbc7Sjsg pr_info(DRIVER_NAME ": %s() - ok!\n", __func__);
42c349dbc7Sjsg return 0;
43c349dbc7Sjsg }
44c349dbc7Sjsg
i915_live_sanitycheck(struct drm_i915_private * i915)45c349dbc7Sjsg int i915_live_sanitycheck(struct drm_i915_private *i915)
46c349dbc7Sjsg {
47c349dbc7Sjsg pr_info("%s: %s() - ok!\n", i915->drm.driver->name, __func__);
48c349dbc7Sjsg return 0;
49c349dbc7Sjsg }
50c349dbc7Sjsg
51c349dbc7Sjsg enum {
52c349dbc7Sjsg #define selftest(name, func) mock_##name,
53c349dbc7Sjsg #include "i915_mock_selftests.h"
54c349dbc7Sjsg #undef selftest
55c349dbc7Sjsg };
56c349dbc7Sjsg
57c349dbc7Sjsg enum {
58c349dbc7Sjsg #define selftest(name, func) live_##name,
59c349dbc7Sjsg #include "i915_live_selftests.h"
60c349dbc7Sjsg #undef selftest
61c349dbc7Sjsg };
62c349dbc7Sjsg
63c349dbc7Sjsg enum {
64c349dbc7Sjsg #define selftest(name, func) perf_##name,
65c349dbc7Sjsg #include "i915_perf_selftests.h"
66c349dbc7Sjsg #undef selftest
67c349dbc7Sjsg };
68c349dbc7Sjsg
69c349dbc7Sjsg struct selftest {
70c349dbc7Sjsg bool enabled;
71c349dbc7Sjsg const char *name;
72c349dbc7Sjsg union {
73c349dbc7Sjsg int (*mock)(void);
74c349dbc7Sjsg int (*live)(struct drm_i915_private *);
75c349dbc7Sjsg };
76c349dbc7Sjsg };
77c349dbc7Sjsg
78c349dbc7Sjsg #define selftest(n, f) [mock_##n] = { .name = #n, { .mock = f } },
79c349dbc7Sjsg static struct selftest mock_selftests[] = {
80c349dbc7Sjsg #include "i915_mock_selftests.h"
81c349dbc7Sjsg };
82c349dbc7Sjsg #undef selftest
83c349dbc7Sjsg
84c349dbc7Sjsg #define selftest(n, f) [live_##n] = { .name = #n, { .live = f } },
85c349dbc7Sjsg static struct selftest live_selftests[] = {
86c349dbc7Sjsg #include "i915_live_selftests.h"
87c349dbc7Sjsg };
88c349dbc7Sjsg #undef selftest
89c349dbc7Sjsg
90c349dbc7Sjsg #define selftest(n, f) [perf_##n] = { .name = #n, { .live = f } },
91c349dbc7Sjsg static struct selftest perf_selftests[] = {
92c349dbc7Sjsg #include "i915_perf_selftests.h"
93c349dbc7Sjsg };
94c349dbc7Sjsg #undef selftest
95c349dbc7Sjsg
96c349dbc7Sjsg /* Embed the line number into the parameter name so that we can order tests */
97c349dbc7Sjsg #define selftest(n, func) selftest_0(n, func, param(n))
98c349dbc7Sjsg #define param(n) __PASTE(igt__, __PASTE(__LINE__, __mock_##n))
99c349dbc7Sjsg #define selftest_0(n, func, id) \
100c349dbc7Sjsg module_param_named(id, mock_selftests[mock_##n].enabled, bool, 0400);
101c349dbc7Sjsg #include "i915_mock_selftests.h"
102c349dbc7Sjsg #undef selftest_0
103c349dbc7Sjsg #undef param
104c349dbc7Sjsg
105c349dbc7Sjsg #define param(n) __PASTE(igt__, __PASTE(__LINE__, __live_##n))
106c349dbc7Sjsg #define selftest_0(n, func, id) \
107c349dbc7Sjsg module_param_named(id, live_selftests[live_##n].enabled, bool, 0400);
108c349dbc7Sjsg #include "i915_live_selftests.h"
109c349dbc7Sjsg #undef selftest_0
110c349dbc7Sjsg #undef param
111c349dbc7Sjsg
112c349dbc7Sjsg #define param(n) __PASTE(igt__, __PASTE(__LINE__, __perf_##n))
113c349dbc7Sjsg #define selftest_0(n, func, id) \
114c349dbc7Sjsg module_param_named(id, perf_selftests[perf_##n].enabled, bool, 0400);
115c349dbc7Sjsg #include "i915_perf_selftests.h"
116c349dbc7Sjsg #undef selftest_0
117c349dbc7Sjsg #undef param
118c349dbc7Sjsg #undef selftest
119c349dbc7Sjsg
set_default_test_all(struct selftest * st,unsigned int count)120c349dbc7Sjsg static void set_default_test_all(struct selftest *st, unsigned int count)
121c349dbc7Sjsg {
122c349dbc7Sjsg unsigned int i;
123c349dbc7Sjsg
124c349dbc7Sjsg for (i = 0; i < count; i++)
125c349dbc7Sjsg if (st[i].enabled)
126c349dbc7Sjsg return;
127c349dbc7Sjsg
128c349dbc7Sjsg for (i = 0; i < count; i++)
129c349dbc7Sjsg st[i].enabled = true;
130c349dbc7Sjsg }
131c349dbc7Sjsg
132*f005ef32Sjsg static bool
__gsc_proxy_init_progressing(struct intel_gsc_uc * gsc)133*f005ef32Sjsg __gsc_proxy_init_progressing(struct intel_gsc_uc *gsc)
134*f005ef32Sjsg {
135*f005ef32Sjsg return intel_gsc_uc_fw_proxy_get_status(gsc) == -EAGAIN;
136*f005ef32Sjsg }
137*f005ef32Sjsg
138*f005ef32Sjsg static void
__wait_gsc_proxy_completed(struct drm_i915_private * i915)139*f005ef32Sjsg __wait_gsc_proxy_completed(struct drm_i915_private *i915)
140*f005ef32Sjsg {
141*f005ef32Sjsg bool need_to_wait = (IS_ENABLED(CONFIG_INTEL_MEI_GSC_PROXY) &&
142*f005ef32Sjsg i915->media_gt &&
143*f005ef32Sjsg HAS_ENGINE(i915->media_gt, GSC0) &&
144*f005ef32Sjsg intel_uc_fw_is_loadable(&i915->media_gt->uc.gsc.fw));
145*f005ef32Sjsg /*
146*f005ef32Sjsg * The gsc proxy component depends on the kernel component driver load ordering
147*f005ef32Sjsg * and in corner cases (the first time after an IFWI flash), init-completion
148*f005ef32Sjsg * firmware flows take longer.
149*f005ef32Sjsg */
150*f005ef32Sjsg unsigned long timeout_ms = 8000;
151*f005ef32Sjsg
152*f005ef32Sjsg if (need_to_wait && wait_for(!__gsc_proxy_init_progressing(&i915->media_gt->uc.gsc),
153*f005ef32Sjsg timeout_ms))
154*f005ef32Sjsg pr_warn(DRIVER_NAME "Timed out waiting for gsc_proxy_completion!\n");
155*f005ef32Sjsg }
156*f005ef32Sjsg
__run_selftests(const char * name,struct selftest * st,unsigned int count,void * data)157c349dbc7Sjsg static int __run_selftests(const char *name,
158c349dbc7Sjsg struct selftest *st,
159c349dbc7Sjsg unsigned int count,
160c349dbc7Sjsg void *data)
161c349dbc7Sjsg {
162c349dbc7Sjsg int err = 0;
163c349dbc7Sjsg
164c349dbc7Sjsg while (!i915_selftest.random_seed)
1651bb76ff1Sjsg i915_selftest.random_seed = get_random_u32();
166c349dbc7Sjsg
167c349dbc7Sjsg i915_selftest.timeout_jiffies =
168c349dbc7Sjsg i915_selftest.timeout_ms ?
169c349dbc7Sjsg msecs_to_jiffies_timeout(i915_selftest.timeout_ms) :
170c349dbc7Sjsg MAX_SCHEDULE_TIMEOUT;
171c349dbc7Sjsg
172c349dbc7Sjsg set_default_test_all(st, count);
173c349dbc7Sjsg
174c349dbc7Sjsg pr_info(DRIVER_NAME ": Performing %s selftests with st_random_seed=0x%x st_timeout=%u\n",
175c349dbc7Sjsg name, i915_selftest.random_seed, i915_selftest.timeout_ms);
176c349dbc7Sjsg
177c349dbc7Sjsg /* Tests are listed in order in i915_*_selftests.h */
178c349dbc7Sjsg for (; count--; st++) {
179c349dbc7Sjsg if (!st->enabled)
180c349dbc7Sjsg continue;
181c349dbc7Sjsg
182c349dbc7Sjsg cond_resched();
183c349dbc7Sjsg if (signal_pending(current))
184c349dbc7Sjsg return -EINTR;
185c349dbc7Sjsg
186c349dbc7Sjsg pr_info(DRIVER_NAME ": Running %s\n", st->name);
187c349dbc7Sjsg if (data)
188c349dbc7Sjsg err = st->live(data);
189c349dbc7Sjsg else
190c349dbc7Sjsg err = st->mock();
191c349dbc7Sjsg if (err == -EINTR && !signal_pending(current))
192c349dbc7Sjsg err = 0;
193c349dbc7Sjsg if (err)
194c349dbc7Sjsg break;
195c349dbc7Sjsg }
196c349dbc7Sjsg
197c349dbc7Sjsg if (WARN(err > 0 || err == -ENOTTY,
198c349dbc7Sjsg "%s returned %d, conflicting with selftest's magic values!\n",
199c349dbc7Sjsg st->name, err))
200c349dbc7Sjsg err = -1;
201c349dbc7Sjsg
202c349dbc7Sjsg return err;
203c349dbc7Sjsg }
204c349dbc7Sjsg
205c349dbc7Sjsg #define run_selftests(x, data) \
206c349dbc7Sjsg __run_selftests(#x, x##_selftests, ARRAY_SIZE(x##_selftests), data)
207c349dbc7Sjsg
i915_mock_selftests(void)208c349dbc7Sjsg int i915_mock_selftests(void)
209c349dbc7Sjsg {
210c349dbc7Sjsg int err;
211c349dbc7Sjsg
212c349dbc7Sjsg if (!i915_selftest.mock)
213c349dbc7Sjsg return 0;
214c349dbc7Sjsg
215c349dbc7Sjsg err = run_selftests(mock, NULL);
216c349dbc7Sjsg if (err) {
217c349dbc7Sjsg i915_selftest.mock = err;
2185ca02815Sjsg return 1;
219c349dbc7Sjsg }
220c349dbc7Sjsg
221c349dbc7Sjsg if (i915_selftest.mock < 0) {
222c349dbc7Sjsg i915_selftest.mock = -ENOTTY;
223c349dbc7Sjsg return 1;
224c349dbc7Sjsg }
225c349dbc7Sjsg
226c349dbc7Sjsg return 0;
227c349dbc7Sjsg }
228c349dbc7Sjsg
i915_live_selftests(struct pci_dev * pdev)229c349dbc7Sjsg int i915_live_selftests(struct pci_dev *pdev)
230c349dbc7Sjsg {
231c349dbc7Sjsg int err;
232c349dbc7Sjsg
233c349dbc7Sjsg if (!i915_selftest.live)
234c349dbc7Sjsg return 0;
235c349dbc7Sjsg
236*f005ef32Sjsg __wait_gsc_proxy_completed(pdev_to_i915(pdev));
237*f005ef32Sjsg
238c349dbc7Sjsg err = run_selftests(live, pdev_to_i915(pdev));
239c349dbc7Sjsg if (err) {
240c349dbc7Sjsg i915_selftest.live = err;
241c349dbc7Sjsg return err;
242c349dbc7Sjsg }
243c349dbc7Sjsg
244c349dbc7Sjsg if (i915_selftest.live < 0) {
245c349dbc7Sjsg i915_selftest.live = -ENOTTY;
246c349dbc7Sjsg return 1;
247c349dbc7Sjsg }
248c349dbc7Sjsg
249c349dbc7Sjsg return 0;
250c349dbc7Sjsg }
251c349dbc7Sjsg
i915_perf_selftests(struct pci_dev * pdev)252c349dbc7Sjsg int i915_perf_selftests(struct pci_dev *pdev)
253c349dbc7Sjsg {
254c349dbc7Sjsg int err;
255c349dbc7Sjsg
256c349dbc7Sjsg if (!i915_selftest.perf)
257c349dbc7Sjsg return 0;
258c349dbc7Sjsg
259*f005ef32Sjsg __wait_gsc_proxy_completed(pdev_to_i915(pdev));
260*f005ef32Sjsg
261c349dbc7Sjsg err = run_selftests(perf, pdev_to_i915(pdev));
262c349dbc7Sjsg if (err) {
263c349dbc7Sjsg i915_selftest.perf = err;
264c349dbc7Sjsg return err;
265c349dbc7Sjsg }
266c349dbc7Sjsg
267c349dbc7Sjsg if (i915_selftest.perf < 0) {
268c349dbc7Sjsg i915_selftest.perf = -ENOTTY;
269c349dbc7Sjsg return 1;
270c349dbc7Sjsg }
271c349dbc7Sjsg
272c349dbc7Sjsg return 0;
273c349dbc7Sjsg }
274c349dbc7Sjsg
apply_subtest_filter(const char * caller,const char * name)275c349dbc7Sjsg static bool apply_subtest_filter(const char *caller, const char *name)
276c349dbc7Sjsg {
277c349dbc7Sjsg char *filter, *sep, *tok;
278c349dbc7Sjsg bool result = true;
279c349dbc7Sjsg
280c349dbc7Sjsg filter = kstrdup(i915_selftest.filter, GFP_KERNEL);
281c349dbc7Sjsg for (sep = filter; (tok = strsep(&sep, ","));) {
282c349dbc7Sjsg bool allow = true;
283c349dbc7Sjsg char *sl;
284c349dbc7Sjsg
285c349dbc7Sjsg if (*tok == '!') {
286c349dbc7Sjsg allow = false;
287c349dbc7Sjsg tok++;
288c349dbc7Sjsg }
289c349dbc7Sjsg
290c349dbc7Sjsg if (*tok == '\0')
291c349dbc7Sjsg continue;
292c349dbc7Sjsg
293c349dbc7Sjsg sl = strchr(tok, '/');
294c349dbc7Sjsg if (sl) {
295c349dbc7Sjsg *sl++ = '\0';
296c349dbc7Sjsg if (strcmp(tok, caller)) {
297c349dbc7Sjsg if (allow)
298c349dbc7Sjsg result = false;
299c349dbc7Sjsg continue;
300c349dbc7Sjsg }
301c349dbc7Sjsg tok = sl;
302c349dbc7Sjsg }
303c349dbc7Sjsg
304c349dbc7Sjsg if (strcmp(tok, name)) {
305c349dbc7Sjsg if (allow)
306c349dbc7Sjsg result = false;
307c349dbc7Sjsg continue;
308c349dbc7Sjsg }
309c349dbc7Sjsg
310c349dbc7Sjsg result = allow;
311c349dbc7Sjsg break;
312c349dbc7Sjsg }
313c349dbc7Sjsg kfree(filter);
314c349dbc7Sjsg
315c349dbc7Sjsg return result;
316c349dbc7Sjsg }
317c349dbc7Sjsg
__i915_nop_setup(void * data)318c349dbc7Sjsg int __i915_nop_setup(void *data)
319c349dbc7Sjsg {
320c349dbc7Sjsg return 0;
321c349dbc7Sjsg }
322c349dbc7Sjsg
__i915_nop_teardown(int err,void * data)323c349dbc7Sjsg int __i915_nop_teardown(int err, void *data)
324c349dbc7Sjsg {
325c349dbc7Sjsg return err;
326c349dbc7Sjsg }
327c349dbc7Sjsg
__i915_live_setup(void * data)328c349dbc7Sjsg int __i915_live_setup(void *data)
329c349dbc7Sjsg {
330c349dbc7Sjsg struct drm_i915_private *i915 = data;
331c349dbc7Sjsg
332c349dbc7Sjsg /* The selftests expect an idle system */
3331bb76ff1Sjsg if (intel_gt_pm_wait_for_idle(to_gt(i915)))
334c349dbc7Sjsg return -EIO;
335c349dbc7Sjsg
3361bb76ff1Sjsg return intel_gt_terminally_wedged(to_gt(i915));
337c349dbc7Sjsg }
338c349dbc7Sjsg
__i915_live_teardown(int err,void * data)339c349dbc7Sjsg int __i915_live_teardown(int err, void *data)
340c349dbc7Sjsg {
341c349dbc7Sjsg struct drm_i915_private *i915 = data;
342c349dbc7Sjsg
343c349dbc7Sjsg if (igt_flush_test(i915))
344c349dbc7Sjsg err = -EIO;
345c349dbc7Sjsg
346c349dbc7Sjsg i915_gem_drain_freed_objects(i915);
347c349dbc7Sjsg
348c349dbc7Sjsg return err;
349c349dbc7Sjsg }
350c349dbc7Sjsg
__intel_gt_live_setup(void * data)351c349dbc7Sjsg int __intel_gt_live_setup(void *data)
352c349dbc7Sjsg {
353c349dbc7Sjsg struct intel_gt *gt = data;
354c349dbc7Sjsg
355c349dbc7Sjsg /* The selftests expect an idle system */
356c349dbc7Sjsg if (intel_gt_pm_wait_for_idle(gt))
357c349dbc7Sjsg return -EIO;
358c349dbc7Sjsg
359c349dbc7Sjsg return intel_gt_terminally_wedged(gt);
360c349dbc7Sjsg }
361c349dbc7Sjsg
__intel_gt_live_teardown(int err,void * data)362c349dbc7Sjsg int __intel_gt_live_teardown(int err, void *data)
363c349dbc7Sjsg {
364c349dbc7Sjsg struct intel_gt *gt = data;
365c349dbc7Sjsg
366c349dbc7Sjsg if (igt_flush_test(gt->i915))
367c349dbc7Sjsg err = -EIO;
368c349dbc7Sjsg
369c349dbc7Sjsg i915_gem_drain_freed_objects(gt->i915);
370c349dbc7Sjsg
371c349dbc7Sjsg return err;
372c349dbc7Sjsg }
373c349dbc7Sjsg
__i915_subtests(const char * caller,int (* setup)(void * data),int (* teardown)(int err,void * data),const struct i915_subtest * st,unsigned int count,void * data)374c349dbc7Sjsg int __i915_subtests(const char *caller,
375c349dbc7Sjsg int (*setup)(void *data),
376c349dbc7Sjsg int (*teardown)(int err, void *data),
377c349dbc7Sjsg const struct i915_subtest *st,
378c349dbc7Sjsg unsigned int count,
379c349dbc7Sjsg void *data)
380c349dbc7Sjsg {
381c349dbc7Sjsg int err;
382c349dbc7Sjsg
383c349dbc7Sjsg for (; count--; st++) {
384c349dbc7Sjsg cond_resched();
385c349dbc7Sjsg if (signal_pending(current))
386c349dbc7Sjsg return -EINTR;
387c349dbc7Sjsg
388c349dbc7Sjsg if (!apply_subtest_filter(caller, st->name))
389c349dbc7Sjsg continue;
390c349dbc7Sjsg
391c349dbc7Sjsg err = setup(data);
392c349dbc7Sjsg if (err) {
393c349dbc7Sjsg pr_err(DRIVER_NAME "/%s: setup failed for %s\n",
394c349dbc7Sjsg caller, st->name);
395c349dbc7Sjsg return err;
396c349dbc7Sjsg }
397c349dbc7Sjsg
398c349dbc7Sjsg pr_info(DRIVER_NAME ": Running %s/%s\n", caller, st->name);
399c349dbc7Sjsg GEM_TRACE("Running %s/%s\n", caller, st->name);
400c349dbc7Sjsg
401c349dbc7Sjsg err = teardown(st->func(data), data);
402c349dbc7Sjsg if (err && err != -EINTR) {
403c349dbc7Sjsg pr_err(DRIVER_NAME "/%s: %s failed with error %d\n",
404c349dbc7Sjsg caller, st->name, err);
405c349dbc7Sjsg return err;
406c349dbc7Sjsg }
407c349dbc7Sjsg }
408c349dbc7Sjsg
409c349dbc7Sjsg return 0;
410c349dbc7Sjsg }
411c349dbc7Sjsg
__igt_timeout(unsigned long timeout,const char * fmt,...)412c349dbc7Sjsg bool __igt_timeout(unsigned long timeout, const char *fmt, ...)
413c349dbc7Sjsg {
414c349dbc7Sjsg va_list va;
415c349dbc7Sjsg
416c349dbc7Sjsg if (!signal_pending(current)) {
417c349dbc7Sjsg cond_resched();
418c349dbc7Sjsg if (time_before(jiffies, timeout))
419c349dbc7Sjsg return false;
420c349dbc7Sjsg }
421c349dbc7Sjsg
422c349dbc7Sjsg if (fmt) {
423c349dbc7Sjsg va_start(va, fmt);
424c349dbc7Sjsg vprintk(fmt, va);
425c349dbc7Sjsg va_end(va);
426c349dbc7Sjsg }
427c349dbc7Sjsg
428c349dbc7Sjsg return true;
429c349dbc7Sjsg }
430c349dbc7Sjsg
igt_hexdump(const void * buf,size_t len)431ad8b1aafSjsg void igt_hexdump(const void *buf, size_t len)
432ad8b1aafSjsg {
433ad8b1aafSjsg const size_t rowsize = 8 * sizeof(u32);
434ad8b1aafSjsg const void *prev = NULL;
435ad8b1aafSjsg bool skip = false;
436ad8b1aafSjsg size_t pos;
437ad8b1aafSjsg
438ad8b1aafSjsg for (pos = 0; pos < len; pos += rowsize) {
439ad8b1aafSjsg char line[128];
440ad8b1aafSjsg
441ad8b1aafSjsg if (prev && !memcmp(prev, buf + pos, rowsize)) {
442ad8b1aafSjsg if (!skip) {
443ad8b1aafSjsg pr_info("*\n");
444ad8b1aafSjsg skip = true;
445ad8b1aafSjsg }
446ad8b1aafSjsg continue;
447ad8b1aafSjsg }
448ad8b1aafSjsg
449ad8b1aafSjsg WARN_ON_ONCE(hex_dump_to_buffer(buf + pos, len - pos,
450ad8b1aafSjsg rowsize, sizeof(u32),
451ad8b1aafSjsg line, sizeof(line),
452ad8b1aafSjsg false) >= sizeof(line));
453ad8b1aafSjsg pr_info("[%04zx] %s\n", pos, line);
454ad8b1aafSjsg
455ad8b1aafSjsg prev = buf + pos;
456ad8b1aafSjsg skip = false;
457ad8b1aafSjsg }
458ad8b1aafSjsg }
459ad8b1aafSjsg
460c349dbc7Sjsg module_param_named(st_random_seed, i915_selftest.random_seed, uint, 0400);
461c349dbc7Sjsg module_param_named(st_timeout, i915_selftest.timeout_ms, uint, 0400);
462c349dbc7Sjsg module_param_named(st_filter, i915_selftest.filter, charp, 0400);
463c349dbc7Sjsg
464c349dbc7Sjsg module_param_named_unsafe(mock_selftests, i915_selftest.mock, int, 0400);
4655ca02815Sjsg MODULE_PARM_DESC(mock_selftests, "Run selftests before loading, using mock hardware (0:disabled [default], 1:run tests then load driver, -1:run tests then leave dummy module)");
466c349dbc7Sjsg
467c349dbc7Sjsg module_param_named_unsafe(live_selftests, i915_selftest.live, int, 0400);
468c349dbc7Sjsg MODULE_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)");
469c349dbc7Sjsg
470c349dbc7Sjsg module_param_named_unsafe(perf_selftests, i915_selftest.perf, int, 0400);
471c349dbc7Sjsg MODULE_PARM_DESC(perf_selftests, "Run performance orientated selftests after driver initialisation on the live system (0:disabled [default], 1:run tests then continue, -1:run tests then exit module)");
472