diff options
Diffstat (limited to 'include/os/linux/debug.c')
-rw-r--r-- | include/os/linux/debug.c | 457 |
1 files changed, 457 insertions, 0 deletions
diff --git a/include/os/linux/debug.c b/include/os/linux/debug.c new file mode 100644 index 0000000..5f0703c --- /dev/null +++ b/include/os/linux/debug.c | |||
@@ -0,0 +1,457 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2017-2018 NVIDIA Corporation. All rights reserved. | ||
3 | * | ||
4 | * This software is licensed under the terms of the GNU General Public | ||
5 | * License version 2, as published by the Free Software Foundation, and | ||
6 | * may be copied, distributed, and modified under those terms. | ||
7 | * | ||
8 | * This program is distributed in the hope that it will be useful, | ||
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
11 | * GNU General Public License for more details. | ||
12 | * | ||
13 | */ | ||
14 | |||
15 | #include "debug_cde.h" | ||
16 | #include "debug_ce.h" | ||
17 | #include "debug_fifo.h" | ||
18 | #include "debug_gr.h" | ||
19 | #include "debug_allocator.h" | ||
20 | #include "debug_kmem.h" | ||
21 | #include "debug_pmu.h" | ||
22 | #include "debug_sched.h" | ||
23 | #include "debug_hal.h" | ||
24 | #include "debug_xve.h" | ||
25 | #include "debug_ltc.h" | ||
26 | #include "debug_bios.h" | ||
27 | #include "os_linux.h" | ||
28 | #include "platform_gk20a.h" | ||
29 | |||
30 | #include <nvgpu/gk20a.h> | ||
31 | |||
32 | #include <linux/debugfs.h> | ||
33 | #include <linux/seq_file.h> | ||
34 | #include <linux/uaccess.h> | ||
35 | |||
36 | #include <nvgpu/debug.h> | ||
37 | |||
38 | unsigned int gk20a_debug_trace_cmdbuf; | ||
39 | |||
40 | static inline void gk20a_debug_write_printk(void *ctx, const char *str, | ||
41 | size_t len) | ||
42 | { | ||
43 | pr_info("%s", str); | ||
44 | } | ||
45 | |||
46 | static inline void gk20a_debug_write_to_seqfile(void *ctx, const char *str, | ||
47 | size_t len) | ||
48 | { | ||
49 | seq_write((struct seq_file *)ctx, str, len); | ||
50 | } | ||
51 | |||
52 | void gk20a_debug_output(struct gk20a_debug_output *o, | ||
53 | const char *fmt, ...) | ||
54 | { | ||
55 | va_list args; | ||
56 | int len; | ||
57 | |||
58 | va_start(args, fmt); | ||
59 | len = vsnprintf(o->buf, sizeof(o->buf), fmt, args); | ||
60 | va_end(args); | ||
61 | o->fn(o->ctx, o->buf, len); | ||
62 | } | ||
63 | |||
64 | static int gk20a_gr_dump_regs(struct gk20a *g, | ||
65 | struct gk20a_debug_output *o) | ||
66 | { | ||
67 | if (g->ops.gr.dump_gr_regs) | ||
68 | gr_gk20a_elpg_protected_call(g, g->ops.gr.dump_gr_regs(g, o)); | ||
69 | |||
70 | return 0; | ||
71 | } | ||
72 | |||
73 | int gk20a_gr_debug_dump(struct gk20a *g) | ||
74 | { | ||
75 | struct gk20a_debug_output o = { | ||
76 | .fn = gk20a_debug_write_printk | ||
77 | }; | ||
78 | |||
79 | gk20a_gr_dump_regs(g, &o); | ||
80 | |||
81 | return 0; | ||
82 | } | ||
83 | |||
84 | static int gk20a_gr_debug_show(struct seq_file *s, void *unused) | ||
85 | { | ||
86 | struct device *dev = s->private; | ||
87 | struct gk20a *g = gk20a_get_platform(dev)->g; | ||
88 | struct gk20a_debug_output o = { | ||
89 | .fn = gk20a_debug_write_to_seqfile, | ||
90 | .ctx = s, | ||
91 | }; | ||
92 | int err; | ||
93 | |||
94 | err = gk20a_busy(g); | ||
95 | if (err) { | ||
96 | nvgpu_err(g, "failed to power on gpu: %d", err); | ||
97 | return -EINVAL; | ||
98 | } | ||
99 | |||
100 | gk20a_gr_dump_regs(g, &o); | ||
101 | |||
102 | gk20a_idle(g); | ||
103 | |||
104 | return 0; | ||
105 | } | ||
106 | |||
107 | void gk20a_debug_dump(struct gk20a *g) | ||
108 | { | ||
109 | struct gk20a_platform *platform = gk20a_get_platform(dev_from_gk20a(g)); | ||
110 | struct gk20a_debug_output o = { | ||
111 | .fn = gk20a_debug_write_printk | ||
112 | }; | ||
113 | |||
114 | if (platform->dump_platform_dependencies) | ||
115 | platform->dump_platform_dependencies(dev_from_gk20a(g)); | ||
116 | |||
117 | /* HAL only initialized after 1st power-on */ | ||
118 | if (g->ops.debug.show_dump) | ||
119 | g->ops.debug.show_dump(g, &o); | ||
120 | } | ||
121 | |||
122 | static int gk20a_debug_show(struct seq_file *s, void *unused) | ||
123 | { | ||
124 | struct device *dev = s->private; | ||
125 | struct gk20a_debug_output o = { | ||
126 | .fn = gk20a_debug_write_to_seqfile, | ||
127 | .ctx = s, | ||
128 | }; | ||
129 | struct gk20a *g; | ||
130 | int err; | ||
131 | |||
132 | g = gk20a_get_platform(dev)->g; | ||
133 | |||
134 | err = gk20a_busy(g); | ||
135 | if (err) { | ||
136 | nvgpu_err(g, "failed to power on gpu: %d", err); | ||
137 | return -EFAULT; | ||
138 | } | ||
139 | |||
140 | /* HAL only initialized after 1st power-on */ | ||
141 | if (g->ops.debug.show_dump) | ||
142 | g->ops.debug.show_dump(g, &o); | ||
143 | |||
144 | gk20a_idle(g); | ||
145 | return 0; | ||
146 | } | ||
147 | |||
148 | static int gk20a_gr_debug_open(struct inode *inode, struct file *file) | ||
149 | { | ||
150 | return single_open(file, gk20a_gr_debug_show, inode->i_private); | ||
151 | } | ||
152 | |||
153 | static int gk20a_debug_open(struct inode *inode, struct file *file) | ||
154 | { | ||
155 | return single_open(file, gk20a_debug_show, inode->i_private); | ||
156 | } | ||
157 | |||
158 | static const struct file_operations gk20a_gr_debug_fops = { | ||
159 | .open = gk20a_gr_debug_open, | ||
160 | .read = seq_read, | ||
161 | .llseek = seq_lseek, | ||
162 | .release = single_release, | ||
163 | }; | ||
164 | |||
165 | static const struct file_operations gk20a_debug_fops = { | ||
166 | .open = gk20a_debug_open, | ||
167 | .read = seq_read, | ||
168 | .llseek = seq_lseek, | ||
169 | .release = single_release, | ||
170 | }; | ||
171 | |||
172 | void gk20a_debug_show_dump(struct gk20a *g, struct gk20a_debug_output *o) | ||
173 | { | ||
174 | g->ops.fifo.dump_pbdma_status(g, o); | ||
175 | g->ops.fifo.dump_eng_status(g, o); | ||
176 | |||
177 | gk20a_debug_dump_all_channel_status_ramfc(g, o); | ||
178 | } | ||
179 | |||
180 | static ssize_t disable_bigpage_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) | ||
181 | { | ||
182 | char buf[3]; | ||
183 | struct gk20a *g = file->private_data; | ||
184 | |||
185 | if (g->mm.disable_bigpage) | ||
186 | buf[0] = 'Y'; | ||
187 | else | ||
188 | buf[0] = 'N'; | ||
189 | buf[1] = '\n'; | ||
190 | buf[2] = 0x00; | ||
191 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | ||
192 | } | ||
193 | |||
194 | static ssize_t disable_bigpage_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) | ||
195 | { | ||
196 | char buf[32]; | ||
197 | int buf_size; | ||
198 | bool bv; | ||
199 | struct gk20a *g = file->private_data; | ||
200 | |||
201 | buf_size = min(count, (sizeof(buf)-1)); | ||
202 | if (copy_from_user(buf, user_buf, buf_size)) | ||
203 | return -EFAULT; | ||
204 | |||
205 | if (strtobool(buf, &bv) == 0) { | ||
206 | g->mm.disable_bigpage = bv; | ||
207 | gk20a_init_gpu_characteristics(g); | ||
208 | } | ||
209 | |||
210 | return count; | ||
211 | } | ||
212 | |||
213 | static struct file_operations disable_bigpage_fops = { | ||
214 | .open = simple_open, | ||
215 | .read = disable_bigpage_read, | ||
216 | .write = disable_bigpage_write, | ||
217 | }; | ||
218 | |||
219 | static int railgate_residency_show(struct seq_file *s, void *data) | ||
220 | { | ||
221 | struct gk20a *g = s->private; | ||
222 | struct gk20a_platform *platform = dev_get_drvdata(dev_from_gk20a(g)); | ||
223 | unsigned long time_since_last_state_transition_ms; | ||
224 | unsigned long total_rail_gate_time_ms; | ||
225 | unsigned long total_rail_ungate_time_ms; | ||
226 | |||
227 | if (platform->is_railgated(dev_from_gk20a(g))) { | ||
228 | time_since_last_state_transition_ms = | ||
229 | jiffies_to_msecs(jiffies - | ||
230 | g->pstats.last_rail_gate_complete); | ||
231 | total_rail_ungate_time_ms = g->pstats.total_rail_ungate_time_ms; | ||
232 | total_rail_gate_time_ms = | ||
233 | g->pstats.total_rail_gate_time_ms + | ||
234 | time_since_last_state_transition_ms; | ||
235 | } else { | ||
236 | time_since_last_state_transition_ms = | ||
237 | jiffies_to_msecs(jiffies - | ||
238 | g->pstats.last_rail_ungate_complete); | ||
239 | total_rail_gate_time_ms = g->pstats.total_rail_gate_time_ms; | ||
240 | total_rail_ungate_time_ms = | ||
241 | g->pstats.total_rail_ungate_time_ms + | ||
242 | time_since_last_state_transition_ms; | ||
243 | } | ||
244 | |||
245 | seq_printf(s, "Time with Rails Gated: %lu ms\n" | ||
246 | "Time with Rails UnGated: %lu ms\n" | ||
247 | "Total railgating cycles: %lu\n", | ||
248 | total_rail_gate_time_ms, | ||
249 | total_rail_ungate_time_ms, | ||
250 | g->pstats.railgating_cycle_count - 1); | ||
251 | return 0; | ||
252 | |||
253 | } | ||
254 | |||
255 | static int railgate_residency_open(struct inode *inode, struct file *file) | ||
256 | { | ||
257 | return single_open(file, railgate_residency_show, inode->i_private); | ||
258 | } | ||
259 | |||
260 | static const struct file_operations railgate_residency_fops = { | ||
261 | .open = railgate_residency_open, | ||
262 | .read = seq_read, | ||
263 | .llseek = seq_lseek, | ||
264 | .release = single_release, | ||
265 | }; | ||
266 | |||
267 | static int gk20a_railgating_debugfs_init(struct gk20a *g) | ||
268 | { | ||
269 | struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g); | ||
270 | struct dentry *d; | ||
271 | |||
272 | d = debugfs_create_file( | ||
273 | "railgate_residency", S_IRUGO|S_IWUSR, l->debugfs, g, | ||
274 | &railgate_residency_fops); | ||
275 | if (!d) | ||
276 | return -ENOMEM; | ||
277 | |||
278 | return 0; | ||
279 | } | ||
280 | static ssize_t timeouts_enabled_read(struct file *file, | ||
281 | char __user *user_buf, size_t count, loff_t *ppos) | ||
282 | { | ||
283 | char buf[3]; | ||
284 | struct gk20a *g = file->private_data; | ||
285 | |||
286 | if (nvgpu_is_timeouts_enabled(g)) | ||
287 | buf[0] = 'Y'; | ||
288 | else | ||
289 | buf[0] = 'N'; | ||
290 | buf[1] = '\n'; | ||
291 | buf[2] = 0x00; | ||
292 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | ||
293 | } | ||
294 | |||
295 | static ssize_t timeouts_enabled_write(struct file *file, | ||
296 | const char __user *user_buf, size_t count, loff_t *ppos) | ||
297 | { | ||
298 | char buf[3]; | ||
299 | int buf_size; | ||
300 | bool timeouts_enabled; | ||
301 | struct gk20a *g = file->private_data; | ||
302 | |||
303 | buf_size = min(count, (sizeof(buf)-1)); | ||
304 | if (copy_from_user(buf, user_buf, buf_size)) | ||
305 | return -EFAULT; | ||
306 | |||
307 | if (strtobool(buf, &timeouts_enabled) == 0) { | ||
308 | nvgpu_mutex_acquire(&g->dbg_sessions_lock); | ||
309 | if (timeouts_enabled == false) { | ||
310 | /* requesting to disable timeouts */ | ||
311 | if (g->timeouts_disabled_by_user == false) { | ||
312 | nvgpu_atomic_inc(&g->timeouts_disabled_refcount); | ||
313 | g->timeouts_disabled_by_user = true; | ||
314 | } | ||
315 | } else { | ||
316 | /* requesting to enable timeouts */ | ||
317 | if (g->timeouts_disabled_by_user == true) { | ||
318 | nvgpu_atomic_dec(&g->timeouts_disabled_refcount); | ||
319 | g->timeouts_disabled_by_user = false; | ||
320 | } | ||
321 | } | ||
322 | nvgpu_mutex_release(&g->dbg_sessions_lock); | ||
323 | } | ||
324 | |||
325 | return count; | ||
326 | } | ||
327 | |||
328 | static const struct file_operations timeouts_enabled_fops = { | ||
329 | .open = simple_open, | ||
330 | .read = timeouts_enabled_read, | ||
331 | .write = timeouts_enabled_write, | ||
332 | }; | ||
333 | |||
334 | void gk20a_debug_init(struct gk20a *g, const char *debugfs_symlink) | ||
335 | { | ||
336 | struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g); | ||
337 | struct device *dev = dev_from_gk20a(g); | ||
338 | |||
339 | l->debugfs = debugfs_create_dir(dev_name(dev), NULL); | ||
340 | if (!l->debugfs) | ||
341 | return; | ||
342 | |||
343 | if (debugfs_symlink) | ||
344 | l->debugfs_alias = | ||
345 | debugfs_create_symlink(debugfs_symlink, | ||
346 | NULL, dev_name(dev)); | ||
347 | |||
348 | debugfs_create_file("status", S_IRUGO, l->debugfs, | ||
349 | dev, &gk20a_debug_fops); | ||
350 | debugfs_create_file("gr_status", S_IRUGO, l->debugfs, | ||
351 | dev, &gk20a_gr_debug_fops); | ||
352 | debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, | ||
353 | l->debugfs, &gk20a_debug_trace_cmdbuf); | ||
354 | |||
355 | debugfs_create_u32("ch_wdt_timeout_ms", S_IRUGO|S_IWUSR, | ||
356 | l->debugfs, &g->ch_wdt_timeout_ms); | ||
357 | |||
358 | debugfs_create_u32("disable_syncpoints", S_IRUGO, | ||
359 | l->debugfs, &g->disable_syncpoints); | ||
360 | |||
361 | /* New debug logging API. */ | ||
362 | debugfs_create_u64("log_mask", S_IRUGO|S_IWUSR, | ||
363 | l->debugfs, &g->log_mask); | ||
364 | debugfs_create_u32("log_trace", S_IRUGO|S_IWUSR, | ||
365 | l->debugfs, &g->log_trace); | ||
366 | |||
367 | l->debugfs_ltc_enabled = | ||
368 | debugfs_create_bool("ltc_enabled", S_IRUGO|S_IWUSR, | ||
369 | l->debugfs, | ||
370 | &g->mm.ltc_enabled_target); | ||
371 | |||
372 | l->debugfs_gr_idle_timeout_default = | ||
373 | debugfs_create_u32("gr_idle_timeout_default_us", | ||
374 | S_IRUGO|S_IWUSR, l->debugfs, | ||
375 | &g->gr_idle_timeout_default); | ||
376 | l->debugfs_timeouts_enabled = | ||
377 | debugfs_create_file("timeouts_enabled", | ||
378 | S_IRUGO|S_IWUSR, | ||
379 | l->debugfs, | ||
380 | g, | ||
381 | &timeouts_enabled_fops); | ||
382 | |||
383 | l->debugfs_disable_bigpage = | ||
384 | debugfs_create_file("disable_bigpage", | ||
385 | S_IRUGO|S_IWUSR, | ||
386 | l->debugfs, | ||
387 | g, | ||
388 | &disable_bigpage_fops); | ||
389 | |||
390 | l->debugfs_timeslice_low_priority_us = | ||
391 | debugfs_create_u32("timeslice_low_priority_us", | ||
392 | S_IRUGO|S_IWUSR, | ||
393 | l->debugfs, | ||
394 | &g->timeslice_low_priority_us); | ||
395 | l->debugfs_timeslice_medium_priority_us = | ||
396 | debugfs_create_u32("timeslice_medium_priority_us", | ||
397 | S_IRUGO|S_IWUSR, | ||
398 | l->debugfs, | ||
399 | &g->timeslice_medium_priority_us); | ||
400 | l->debugfs_timeslice_high_priority_us = | ||
401 | debugfs_create_u32("timeslice_high_priority_us", | ||
402 | S_IRUGO|S_IWUSR, | ||
403 | l->debugfs, | ||
404 | &g->timeslice_high_priority_us); | ||
405 | l->debugfs_runlist_interleave = | ||
406 | debugfs_create_bool("runlist_interleave", | ||
407 | S_IRUGO|S_IWUSR, | ||
408 | l->debugfs, | ||
409 | &g->runlist_interleave); | ||
410 | l->debugfs_force_preemption_gfxp = | ||
411 | debugfs_create_bool("force_preemption_gfxp", S_IRUGO|S_IWUSR, | ||
412 | l->debugfs, | ||
413 | &g->gr.ctx_vars.force_preemption_gfxp); | ||
414 | |||
415 | l->debugfs_force_preemption_cilp = | ||
416 | debugfs_create_bool("force_preemption_cilp", S_IRUGO|S_IWUSR, | ||
417 | l->debugfs, | ||
418 | &g->gr.ctx_vars.force_preemption_cilp); | ||
419 | |||
420 | l->debugfs_dump_ctxsw_stats = | ||
421 | debugfs_create_bool("dump_ctxsw_stats_on_channel_close", | ||
422 | S_IRUGO|S_IWUSR, l->debugfs, | ||
423 | &g->gr.ctx_vars.dump_ctxsw_stats_on_channel_close); | ||
424 | |||
425 | gr_gk20a_debugfs_init(g); | ||
426 | gk20a_pmu_debugfs_init(g); | ||
427 | gk20a_railgating_debugfs_init(g); | ||
428 | #ifdef CONFIG_NVGPU_SUPPORT_CDE | ||
429 | gk20a_cde_debugfs_init(g); | ||
430 | #endif | ||
431 | gk20a_ce_debugfs_init(g); | ||
432 | nvgpu_alloc_debugfs_init(g); | ||
433 | nvgpu_hal_debugfs_init(g); | ||
434 | gk20a_fifo_debugfs_init(g); | ||
435 | gk20a_sched_debugfs_init(g); | ||
436 | #ifdef CONFIG_NVGPU_TRACK_MEM_USAGE | ||
437 | nvgpu_kmem_debugfs_init(g); | ||
438 | #endif | ||
439 | nvgpu_ltc_debugfs_init(g); | ||
440 | if (g->pci_vendor_id) { | ||
441 | nvgpu_xve_debugfs_init(g); | ||
442 | nvgpu_bios_debugfs_init(g); | ||
443 | } | ||
444 | } | ||
445 | |||
446 | void gk20a_debug_deinit(struct gk20a *g) | ||
447 | { | ||
448 | struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g); | ||
449 | |||
450 | if (!l->debugfs) | ||
451 | return; | ||
452 | |||
453 | gk20a_fifo_debugfs_deinit(g); | ||
454 | |||
455 | debugfs_remove_recursive(l->debugfs); | ||
456 | debugfs_remove(l->debugfs_alias); | ||
457 | } | ||