Commit | Line | Data |
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84734a04 MK |
1 | /* |
2 | * Copyright (c) 2008 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 | * Authors: | |
24 | * Eric Anholt <eric@anholt.net> | |
25 | * Keith Packard <keithp@keithp.com> | |
26 | * Mika Kuoppala <mika.kuoppala@intel.com> | |
27 | * | |
28 | */ | |
29 | ||
30 | #include <generated/utsrelease.h> | |
9f267eb8 | 31 | #include <linux/stop_machine.h> |
0a97015d | 32 | #include <linux/zlib.h> |
84734a04 MK |
33 | #include "i915_drv.h" |
34 | ||
6361f4ba | 35 | static const char *engine_str(int engine) |
84734a04 | 36 | { |
6361f4ba | 37 | switch (engine) { |
84734a04 MK |
38 | case RCS: return "render"; |
39 | case VCS: return "bsd"; | |
40 | case BCS: return "blt"; | |
41 | case VECS: return "vebox"; | |
845f74a7 | 42 | case VCS2: return "bsd2"; |
84734a04 MK |
43 | default: return ""; |
44 | } | |
45 | } | |
46 | ||
84734a04 MK |
47 | static const char *tiling_flag(int tiling) |
48 | { | |
49 | switch (tiling) { | |
50 | default: | |
51 | case I915_TILING_NONE: return ""; | |
52 | case I915_TILING_X: return " X"; | |
53 | case I915_TILING_Y: return " Y"; | |
54 | } | |
55 | } | |
56 | ||
57 | static const char *dirty_flag(int dirty) | |
58 | { | |
59 | return dirty ? " dirty" : ""; | |
60 | } | |
61 | ||
62 | static const char *purgeable_flag(int purgeable) | |
63 | { | |
64 | return purgeable ? " purgeable" : ""; | |
65 | } | |
66 | ||
67 | static bool __i915_error_ok(struct drm_i915_error_state_buf *e) | |
68 | { | |
69 | ||
70 | if (!e->err && WARN(e->bytes > (e->size - 1), "overflow")) { | |
71 | e->err = -ENOSPC; | |
72 | return false; | |
73 | } | |
74 | ||
75 | if (e->bytes == e->size - 1 || e->err) | |
76 | return false; | |
77 | ||
78 | return true; | |
79 | } | |
80 | ||
81 | static bool __i915_error_seek(struct drm_i915_error_state_buf *e, | |
82 | unsigned len) | |
83 | { | |
84 | if (e->pos + len <= e->start) { | |
85 | e->pos += len; | |
86 | return false; | |
87 | } | |
88 | ||
89 | /* First vsnprintf needs to fit in its entirety for memmove */ | |
90 | if (len >= e->size) { | |
91 | e->err = -EIO; | |
92 | return false; | |
93 | } | |
94 | ||
95 | return true; | |
96 | } | |
97 | ||
98 | static void __i915_error_advance(struct drm_i915_error_state_buf *e, | |
99 | unsigned len) | |
100 | { | |
101 | /* If this is first printf in this window, adjust it so that | |
102 | * start position matches start of the buffer | |
103 | */ | |
104 | ||
105 | if (e->pos < e->start) { | |
106 | const size_t off = e->start - e->pos; | |
107 | ||
108 | /* Should not happen but be paranoid */ | |
109 | if (off > len || e->bytes) { | |
110 | e->err = -EIO; | |
111 | return; | |
112 | } | |
113 | ||
114 | memmove(e->buf, e->buf + off, len - off); | |
115 | e->bytes = len - off; | |
116 | e->pos = e->start; | |
117 | return; | |
118 | } | |
119 | ||
120 | e->bytes += len; | |
121 | e->pos += len; | |
122 | } | |
123 | ||
124 | static void i915_error_vprintf(struct drm_i915_error_state_buf *e, | |
125 | const char *f, va_list args) | |
126 | { | |
127 | unsigned len; | |
128 | ||
129 | if (!__i915_error_ok(e)) | |
130 | return; | |
131 | ||
132 | /* Seek the first printf which is hits start position */ | |
133 | if (e->pos < e->start) { | |
e29bb4eb CW |
134 | va_list tmp; |
135 | ||
136 | va_copy(tmp, args); | |
1d2cb9a5 MK |
137 | len = vsnprintf(NULL, 0, f, tmp); |
138 | va_end(tmp); | |
139 | ||
140 | if (!__i915_error_seek(e, len)) | |
84734a04 MK |
141 | return; |
142 | } | |
143 | ||
144 | len = vsnprintf(e->buf + e->bytes, e->size - e->bytes, f, args); | |
145 | if (len >= e->size - e->bytes) | |
146 | len = e->size - e->bytes - 1; | |
147 | ||
148 | __i915_error_advance(e, len); | |
149 | } | |
150 | ||
151 | static void i915_error_puts(struct drm_i915_error_state_buf *e, | |
152 | const char *str) | |
153 | { | |
154 | unsigned len; | |
155 | ||
156 | if (!__i915_error_ok(e)) | |
157 | return; | |
158 | ||
159 | len = strlen(str); | |
160 | ||
161 | /* Seek the first printf which is hits start position */ | |
162 | if (e->pos < e->start) { | |
163 | if (!__i915_error_seek(e, len)) | |
164 | return; | |
165 | } | |
166 | ||
167 | if (len >= e->size - e->bytes) | |
168 | len = e->size - e->bytes - 1; | |
169 | memcpy(e->buf + e->bytes, str, len); | |
170 | ||
171 | __i915_error_advance(e, len); | |
172 | } | |
173 | ||
174 | #define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__) | |
175 | #define err_puts(e, s) i915_error_puts(e, s) | |
176 | ||
0a97015d CW |
177 | #ifdef CONFIG_DRM_I915_COMPRESS_ERROR |
178 | ||
d637c178 CW |
179 | struct compress { |
180 | struct z_stream_s zstream; | |
181 | void *tmp; | |
182 | }; | |
183 | ||
184 | static bool compress_init(struct compress *c) | |
0a97015d | 185 | { |
d637c178 | 186 | struct z_stream_s *zstream = memset(&c->zstream, 0, sizeof(c->zstream)); |
0a97015d CW |
187 | |
188 | zstream->workspace = | |
189 | kmalloc(zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL), | |
190 | GFP_ATOMIC | __GFP_NOWARN); | |
191 | if (!zstream->workspace) | |
192 | return false; | |
193 | ||
194 | if (zlib_deflateInit(zstream, Z_DEFAULT_COMPRESSION) != Z_OK) { | |
195 | kfree(zstream->workspace); | |
196 | return false; | |
197 | } | |
198 | ||
d637c178 CW |
199 | c->tmp = NULL; |
200 | if (i915_memcpy_from_wc(NULL, 0, 0)) | |
201 | c->tmp = (void *)__get_free_page(GFP_ATOMIC | __GFP_NOWARN); | |
202 | ||
0a97015d CW |
203 | return true; |
204 | } | |
205 | ||
d637c178 | 206 | static int compress_page(struct compress *c, |
0a97015d CW |
207 | void *src, |
208 | struct drm_i915_error_object *dst) | |
209 | { | |
d637c178 CW |
210 | struct z_stream_s *zstream = &c->zstream; |
211 | ||
0a97015d | 212 | zstream->next_in = src; |
d637c178 CW |
213 | if (c->tmp && i915_memcpy_from_wc(c->tmp, src, PAGE_SIZE)) |
214 | zstream->next_in = c->tmp; | |
0a97015d CW |
215 | zstream->avail_in = PAGE_SIZE; |
216 | ||
217 | do { | |
218 | if (zstream->avail_out == 0) { | |
219 | unsigned long page; | |
220 | ||
221 | page = __get_free_page(GFP_ATOMIC | __GFP_NOWARN); | |
222 | if (!page) | |
223 | return -ENOMEM; | |
224 | ||
225 | dst->pages[dst->page_count++] = (void *)page; | |
226 | ||
227 | zstream->next_out = (void *)page; | |
228 | zstream->avail_out = PAGE_SIZE; | |
229 | } | |
230 | ||
231 | if (zlib_deflate(zstream, Z_SYNC_FLUSH) != Z_OK) | |
232 | return -EIO; | |
233 | } while (zstream->avail_in); | |
234 | ||
235 | /* Fallback to uncompressed if we increase size? */ | |
236 | if (0 && zstream->total_out > zstream->total_in) | |
237 | return -E2BIG; | |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
d637c178 | 242 | static void compress_fini(struct compress *c, |
0a97015d CW |
243 | struct drm_i915_error_object *dst) |
244 | { | |
d637c178 CW |
245 | struct z_stream_s *zstream = &c->zstream; |
246 | ||
0a97015d CW |
247 | if (dst) { |
248 | zlib_deflate(zstream, Z_FINISH); | |
249 | dst->unused = zstream->avail_out; | |
250 | } | |
251 | ||
252 | zlib_deflateEnd(zstream); | |
253 | kfree(zstream->workspace); | |
d637c178 CW |
254 | |
255 | if (c->tmp) | |
256 | free_page((unsigned long)c->tmp); | |
0a97015d CW |
257 | } |
258 | ||
259 | static void err_compression_marker(struct drm_i915_error_state_buf *m) | |
260 | { | |
261 | err_puts(m, ":"); | |
262 | } | |
263 | ||
264 | #else | |
265 | ||
d637c178 CW |
266 | struct compress { |
267 | }; | |
268 | ||
269 | static bool compress_init(struct compress *c) | |
0a97015d CW |
270 | { |
271 | return true; | |
272 | } | |
273 | ||
d637c178 | 274 | static int compress_page(struct compress *c, |
0a97015d CW |
275 | void *src, |
276 | struct drm_i915_error_object *dst) | |
277 | { | |
278 | unsigned long page; | |
d637c178 | 279 | void *ptr; |
0a97015d CW |
280 | |
281 | page = __get_free_page(GFP_ATOMIC | __GFP_NOWARN); | |
282 | if (!page) | |
283 | return -ENOMEM; | |
284 | ||
d637c178 CW |
285 | ptr = (void *)page; |
286 | if (!i915_memcpy_from_wc(ptr, src, PAGE_SIZE)) | |
287 | memcpy(ptr, src, PAGE_SIZE); | |
288 | dst->pages[dst->page_count++] = ptr; | |
0a97015d CW |
289 | |
290 | return 0; | |
291 | } | |
292 | ||
d637c178 | 293 | static void compress_fini(struct compress *c, |
0a97015d CW |
294 | struct drm_i915_error_object *dst) |
295 | { | |
296 | } | |
297 | ||
298 | static void err_compression_marker(struct drm_i915_error_state_buf *m) | |
299 | { | |
300 | err_puts(m, "~"); | |
301 | } | |
302 | ||
303 | #endif | |
304 | ||
84734a04 MK |
305 | static void print_error_buffers(struct drm_i915_error_state_buf *m, |
306 | const char *name, | |
307 | struct drm_i915_error_buffer *err, | |
308 | int count) | |
309 | { | |
b4716185 CW |
310 | int i; |
311 | ||
c0ce4663 | 312 | err_printf(m, "%s [%d]:\n", name, count); |
84734a04 MK |
313 | |
314 | while (count--) { | |
e1f12325 MT |
315 | err_printf(m, " %08x_%08x %8u %02x %02x [ ", |
316 | upper_32_bits(err->gtt_offset), | |
317 | lower_32_bits(err->gtt_offset), | |
84734a04 MK |
318 | err->size, |
319 | err->read_domains, | |
b4716185 | 320 | err->write_domain); |
666796da | 321 | for (i = 0; i < I915_NUM_ENGINES; i++) |
b4716185 CW |
322 | err_printf(m, "%02x ", err->rseqno[i]); |
323 | ||
324 | err_printf(m, "] %02x", err->wseqno); | |
84734a04 MK |
325 | err_puts(m, tiling_flag(err->tiling)); |
326 | err_puts(m, dirty_flag(err->dirty)); | |
327 | err_puts(m, purgeable_flag(err->purgeable)); | |
5cc9ed4b | 328 | err_puts(m, err->userptr ? " userptr" : ""); |
6361f4ba CW |
329 | err_puts(m, err->engine != -1 ? " " : ""); |
330 | err_puts(m, engine_str(err->engine)); | |
0a4cd7c8 | 331 | err_puts(m, i915_cache_level_str(m->i915, err->cache_level)); |
84734a04 MK |
332 | |
333 | if (err->name) | |
334 | err_printf(m, " (name: %d)", err->name); | |
335 | if (err->fence_reg != I915_FENCE_REG_NONE) | |
336 | err_printf(m, " (fence: %d)", err->fence_reg); | |
337 | ||
338 | err_puts(m, "\n"); | |
339 | err++; | |
340 | } | |
341 | } | |
342 | ||
d636951e BW |
343 | static void error_print_instdone(struct drm_i915_error_state_buf *m, |
344 | struct drm_i915_error_engine *ee) | |
345 | { | |
f9e61372 BW |
346 | int slice; |
347 | int subslice; | |
348 | ||
d636951e BW |
349 | err_printf(m, " INSTDONE: 0x%08x\n", |
350 | ee->instdone.instdone); | |
351 | ||
352 | if (ee->engine_id != RCS || INTEL_GEN(m->i915) <= 3) | |
353 | return; | |
354 | ||
355 | err_printf(m, " SC_INSTDONE: 0x%08x\n", | |
356 | ee->instdone.slice_common); | |
357 | ||
358 | if (INTEL_GEN(m->i915) <= 6) | |
359 | return; | |
360 | ||
f9e61372 BW |
361 | for_each_instdone_slice_subslice(m->i915, slice, subslice) |
362 | err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n", | |
363 | slice, subslice, | |
364 | ee->instdone.sampler[slice][subslice]); | |
365 | ||
366 | for_each_instdone_slice_subslice(m->i915, slice, subslice) | |
367 | err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n", | |
368 | slice, subslice, | |
369 | ee->instdone.row[slice][subslice]); | |
d636951e BW |
370 | } |
371 | ||
35ca039e CW |
372 | static void error_print_request(struct drm_i915_error_state_buf *m, |
373 | const char *prefix, | |
374 | struct drm_i915_error_request *erq) | |
375 | { | |
376 | if (!erq->seqno) | |
377 | return; | |
378 | ||
84102171 MK |
379 | err_printf(m, "%s pid %d, ban score %d, seqno %8x:%08x, emitted %dms ago, head %08x, tail %08x\n", |
380 | prefix, erq->pid, erq->ban_score, | |
35ca039e CW |
381 | erq->context, erq->seqno, |
382 | jiffies_to_msecs(jiffies - erq->jiffies), | |
383 | erq->head, erq->tail); | |
384 | } | |
385 | ||
6361f4ba CW |
386 | static void error_print_engine(struct drm_i915_error_state_buf *m, |
387 | struct drm_i915_error_engine *ee) | |
84734a04 | 388 | { |
6361f4ba CW |
389 | err_printf(m, "%s command stream:\n", engine_str(ee->engine_id)); |
390 | err_printf(m, " START: 0x%08x\n", ee->start); | |
06392e3b | 391 | err_printf(m, " HEAD: 0x%08x [0x%08x]\n", ee->head, ee->rq_head); |
cdb324bd CW |
392 | err_printf(m, " TAIL: 0x%08x [0x%08x, 0x%08x]\n", |
393 | ee->tail, ee->rq_post, ee->rq_tail); | |
6361f4ba | 394 | err_printf(m, " CTL: 0x%08x\n", ee->ctl); |
21a2c58a | 395 | err_printf(m, " MODE: 0x%08x\n", ee->mode); |
6361f4ba CW |
396 | err_printf(m, " HWS: 0x%08x\n", ee->hws); |
397 | err_printf(m, " ACTHD: 0x%08x %08x\n", | |
398 | (u32)(ee->acthd>>32), (u32)ee->acthd); | |
399 | err_printf(m, " IPEIR: 0x%08x\n", ee->ipeir); | |
400 | err_printf(m, " IPEHR: 0x%08x\n", ee->ipehr); | |
d636951e BW |
401 | |
402 | error_print_instdone(m, ee); | |
403 | ||
03382dfb CW |
404 | if (ee->batchbuffer) { |
405 | u64 start = ee->batchbuffer->gtt_offset; | |
406 | u64 end = start + ee->batchbuffer->gtt_size; | |
407 | ||
408 | err_printf(m, " batch: [0x%08x_%08x, 0x%08x_%08x]\n", | |
409 | upper_32_bits(start), lower_32_bits(start), | |
410 | upper_32_bits(end), lower_32_bits(end)); | |
411 | } | |
6361f4ba | 412 | if (INTEL_GEN(m->i915) >= 4) { |
03382dfb | 413 | err_printf(m, " BBADDR: 0x%08x_%08x\n", |
6361f4ba CW |
414 | (u32)(ee->bbaddr>>32), (u32)ee->bbaddr); |
415 | err_printf(m, " BB_STATE: 0x%08x\n", ee->bbstate); | |
416 | err_printf(m, " INSTPS: 0x%08x\n", ee->instps); | |
3dda20a9 | 417 | } |
6361f4ba CW |
418 | err_printf(m, " INSTPM: 0x%08x\n", ee->instpm); |
419 | err_printf(m, " FADDR: 0x%08x %08x\n", upper_32_bits(ee->faddr), | |
420 | lower_32_bits(ee->faddr)); | |
421 | if (INTEL_GEN(m->i915) >= 6) { | |
422 | err_printf(m, " RC PSMI: 0x%08x\n", ee->rc_psmi); | |
423 | err_printf(m, " FAULT_REG: 0x%08x\n", ee->fault_reg); | |
85e17f59 CW |
424 | err_printf(m, " SYNC_0: 0x%08x\n", |
425 | ee->semaphore_mboxes[0]); | |
426 | err_printf(m, " SYNC_1: 0x%08x\n", | |
427 | ee->semaphore_mboxes[1]); | |
428 | if (HAS_VEBOX(m->i915)) | |
429 | err_printf(m, " SYNC_2: 0x%08x\n", | |
430 | ee->semaphore_mboxes[2]); | |
84734a04 | 431 | } |
6361f4ba CW |
432 | if (USES_PPGTT(m->i915)) { |
433 | err_printf(m, " GFX_MODE: 0x%08x\n", ee->vm_info.gfx_mode); | |
6c7a01ec | 434 | |
6361f4ba | 435 | if (INTEL_GEN(m->i915) >= 8) { |
6c7a01ec BW |
436 | int i; |
437 | for (i = 0; i < 4; i++) | |
438 | err_printf(m, " PDP%d: 0x%016llx\n", | |
6361f4ba | 439 | i, ee->vm_info.pdp[i]); |
6c7a01ec BW |
440 | } else { |
441 | err_printf(m, " PP_DIR_BASE: 0x%08x\n", | |
6361f4ba | 442 | ee->vm_info.pp_dir_base); |
6c7a01ec BW |
443 | } |
444 | } | |
6361f4ba CW |
445 | err_printf(m, " seqno: 0x%08x\n", ee->seqno); |
446 | err_printf(m, " last_seqno: 0x%08x\n", ee->last_seqno); | |
447 | err_printf(m, " waiting: %s\n", yesno(ee->waiting)); | |
448 | err_printf(m, " ring->head: 0x%08x\n", ee->cpu_ring_head); | |
449 | err_printf(m, " ring->tail: 0x%08x\n", ee->cpu_ring_tail); | |
3fe3b030 MK |
450 | err_printf(m, " hangcheck stall: %s\n", yesno(ee->hangcheck_stalled)); |
451 | err_printf(m, " hangcheck action: %s\n", | |
452 | hangcheck_action_to_str(ee->hangcheck_action)); | |
453 | err_printf(m, " hangcheck action timestamp: %lu, %u ms ago\n", | |
454 | ee->hangcheck_timestamp, | |
455 | jiffies_to_msecs(jiffies - ee->hangcheck_timestamp)); | |
456 | ||
35ca039e CW |
457 | error_print_request(m, " ELSP[0]: ", &ee->execlist[0]); |
458 | error_print_request(m, " ELSP[1]: ", &ee->execlist[1]); | |
84734a04 MK |
459 | } |
460 | ||
461 | void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...) | |
462 | { | |
463 | va_list args; | |
464 | ||
465 | va_start(args, f); | |
466 | i915_error_vprintf(e, f, args); | |
467 | va_end(args); | |
468 | } | |
469 | ||
0a97015d CW |
470 | static int |
471 | ascii85_encode_len(int len) | |
472 | { | |
473 | return DIV_ROUND_UP(len, 4); | |
474 | } | |
475 | ||
476 | static bool | |
477 | ascii85_encode(u32 in, char *out) | |
478 | { | |
479 | int i; | |
480 | ||
481 | if (in == 0) | |
482 | return false; | |
483 | ||
484 | out[5] = '\0'; | |
485 | for (i = 5; i--; ) { | |
486 | out[i] = '!' + in % 85; | |
487 | in /= 85; | |
488 | } | |
489 | ||
490 | return true; | |
491 | } | |
492 | ||
ab0e7ff9 | 493 | static void print_error_obj(struct drm_i915_error_state_buf *m, |
fc4c79c3 CW |
494 | struct intel_engine_cs *engine, |
495 | const char *name, | |
ab0e7ff9 CW |
496 | struct drm_i915_error_object *obj) |
497 | { | |
0a97015d CW |
498 | char out[6]; |
499 | int page; | |
ab0e7ff9 | 500 | |
fc4c79c3 CW |
501 | if (!obj) |
502 | return; | |
503 | ||
504 | if (name) { | |
505 | err_printf(m, "%s --- %s = 0x%08x %08x\n", | |
506 | engine ? engine->name : "global", name, | |
507 | upper_32_bits(obj->gtt_offset), | |
508 | lower_32_bits(obj->gtt_offset)); | |
509 | } | |
510 | ||
0a97015d CW |
511 | err_compression_marker(m); |
512 | for (page = 0; page < obj->page_count; page++) { | |
513 | int i, len; | |
514 | ||
515 | len = PAGE_SIZE; | |
516 | if (page == obj->page_count - 1) | |
517 | len -= obj->unused; | |
518 | len = ascii85_encode_len(len); | |
519 | ||
520 | for (i = 0; i < len; i++) { | |
521 | if (ascii85_encode(obj->pages[page][i], out)) | |
522 | err_puts(m, out); | |
523 | else | |
524 | err_puts(m, "z"); | |
ab0e7ff9 CW |
525 | } |
526 | } | |
0a97015d | 527 | err_puts(m, "\n"); |
ab0e7ff9 CW |
528 | } |
529 | ||
2bd160a1 CW |
530 | static void err_print_capabilities(struct drm_i915_error_state_buf *m, |
531 | const struct intel_device_info *info) | |
532 | { | |
533 | #define PRINT_FLAG(x) err_printf(m, #x ": %s\n", yesno(info->x)) | |
604db650 | 534 | DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG); |
2bd160a1 | 535 | #undef PRINT_FLAG |
2bd160a1 CW |
536 | } |
537 | ||
84734a04 MK |
538 | int i915_error_state_to_str(struct drm_i915_error_state_buf *m, |
539 | const struct i915_error_state_file_priv *error_priv) | |
540 | { | |
12ff05e7 | 541 | struct drm_i915_private *dev_priv = error_priv->i915; |
52a05c30 | 542 | struct pci_dev *pdev = dev_priv->drm.pdev; |
84734a04 | 543 | struct drm_i915_error_state *error = error_priv->error; |
0ca36d78 | 544 | struct drm_i915_error_object *obj; |
fc4c79c3 | 545 | int i, j; |
84734a04 MK |
546 | |
547 | if (!error) { | |
548 | err_printf(m, "no error state collected\n"); | |
549 | goto out; | |
550 | } | |
551 | ||
cb383002 | 552 | err_printf(m, "%s\n", error->error_msg); |
84734a04 | 553 | err_printf(m, "Kernel: " UTS_RELEASE "\n"); |
de867c20 CW |
554 | err_printf(m, "Time: %ld s %ld us\n", |
555 | error->time.tv_sec, error->time.tv_usec); | |
556 | err_printf(m, "Boottime: %ld s %ld us\n", | |
557 | error->boottime.tv_sec, error->boottime.tv_usec); | |
558 | err_printf(m, "Uptime: %ld s %ld us\n", | |
559 | error->uptime.tv_sec, error->uptime.tv_usec); | |
2bd160a1 | 560 | err_print_capabilities(m, &error->device_info); |
3fe3b030 | 561 | |
6361f4ba | 562 | for (i = 0; i < ARRAY_SIZE(error->engine); i++) { |
3fe3b030 | 563 | if (error->engine[i].hangcheck_stalled && |
6361f4ba | 564 | error->engine[i].pid != -1) { |
b083a087 | 565 | err_printf(m, "Active process (on ring %s): %s [%d], context bans %d\n", |
6361f4ba CW |
566 | engine_str(i), |
567 | error->engine[i].comm, | |
b083a087 MK |
568 | error->engine[i].pid, |
569 | error->engine[i].context_bans); | |
ab0e7ff9 CW |
570 | } |
571 | } | |
48b031e3 | 572 | err_printf(m, "Reset count: %u\n", error->reset_count); |
62d5d69b | 573 | err_printf(m, "Suspend count: %u\n", error->suspend_count); |
52a05c30 DW |
574 | err_printf(m, "PCI ID: 0x%04x\n", pdev->device); |
575 | err_printf(m, "PCI Revision: 0x%02x\n", pdev->revision); | |
06e6ff8f | 576 | err_printf(m, "PCI Subsystem: %04x:%04x\n", |
52a05c30 DW |
577 | pdev->subsystem_vendor, |
578 | pdev->subsystem_device); | |
eb5be9d0 | 579 | err_printf(m, "IOMMU enabled?: %d\n", error->iommu); |
0ac7655c | 580 | |
56b857a5 | 581 | if (HAS_CSR(dev_priv)) { |
0ac7655c MK |
582 | struct intel_csr *csr = &dev_priv->csr; |
583 | ||
584 | err_printf(m, "DMC loaded: %s\n", | |
585 | yesno(csr->dmc_payload != NULL)); | |
586 | err_printf(m, "DMC fw version: %d.%d\n", | |
587 | CSR_VERSION_MAJOR(csr->version), | |
588 | CSR_VERSION_MINOR(csr->version)); | |
589 | } | |
590 | ||
84734a04 MK |
591 | err_printf(m, "EIR: 0x%08x\n", error->eir); |
592 | err_printf(m, "IER: 0x%08x\n", error->ier); | |
5f56d5f9 | 593 | if (INTEL_GEN(dev_priv) >= 8) { |
885ea5a8 RV |
594 | for (i = 0; i < 4; i++) |
595 | err_printf(m, "GTIER gt %d: 0x%08x\n", i, | |
596 | error->gtier[i]); | |
6e266956 | 597 | } else if (HAS_PCH_SPLIT(dev_priv) || IS_VALLEYVIEW(dev_priv)) |
885ea5a8 | 598 | err_printf(m, "GTIER: 0x%08x\n", error->gtier[0]); |
84734a04 MK |
599 | err_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er); |
600 | err_printf(m, "FORCEWAKE: 0x%08x\n", error->forcewake); | |
601 | err_printf(m, "DERRMR: 0x%08x\n", error->derrmr); | |
602 | err_printf(m, "CCID: 0x%08x\n", error->ccid); | |
094f9a54 | 603 | err_printf(m, "Missed interrupts: 0x%08lx\n", dev_priv->gpu_error.missed_irq_rings); |
84734a04 MK |
604 | |
605 | for (i = 0; i < dev_priv->num_fence_regs; i++) | |
606 | err_printf(m, " fence[%d] = %08llx\n", i, error->fence[i]); | |
607 | ||
5f56d5f9 | 608 | if (INTEL_GEN(dev_priv) >= 6) { |
84734a04 | 609 | err_printf(m, "ERROR: 0x%08x\n", error->error); |
6c826f34 | 610 | |
5f56d5f9 | 611 | if (INTEL_GEN(dev_priv) >= 8) |
6c826f34 MK |
612 | err_printf(m, "FAULT_TLB_DATA: 0x%08x 0x%08x\n", |
613 | error->fault_data1, error->fault_data0); | |
614 | ||
84734a04 MK |
615 | err_printf(m, "DONE_REG: 0x%08x\n", error->done_reg); |
616 | } | |
617 | ||
5db94019 | 618 | if (IS_GEN7(dev_priv)) |
84734a04 MK |
619 | err_printf(m, "ERR_INT: 0x%08x\n", error->err_int); |
620 | ||
6361f4ba CW |
621 | for (i = 0; i < ARRAY_SIZE(error->engine); i++) { |
622 | if (error->engine[i].engine_id != -1) | |
623 | error_print_engine(m, &error->engine[i]); | |
624 | } | |
84734a04 | 625 | |
c0ce4663 CW |
626 | for (i = 0; i < ARRAY_SIZE(error->active_vm); i++) { |
627 | char buf[128]; | |
628 | int len, first = 1; | |
3a448734 | 629 | |
c0ce4663 CW |
630 | if (!error->active_vm[i]) |
631 | break; | |
632 | ||
633 | len = scnprintf(buf, sizeof(buf), "Active ("); | |
634 | for (j = 0; j < ARRAY_SIZE(error->engine); j++) { | |
635 | if (error->engine[j].vm != error->active_vm[i]) | |
636 | continue; | |
637 | ||
638 | len += scnprintf(buf + len, sizeof(buf), "%s%s", | |
639 | first ? "" : ", ", | |
3b3f1650 | 640 | dev_priv->engine[j]->name); |
c0ce4663 CW |
641 | first = 0; |
642 | } | |
643 | scnprintf(buf + len, sizeof(buf), ")"); | |
644 | print_error_buffers(m, buf, | |
3a448734 CW |
645 | error->active_bo[i], |
646 | error->active_bo_count[i]); | |
3a448734 | 647 | } |
84734a04 | 648 | |
c0ce4663 CW |
649 | print_error_buffers(m, "Pinned (global)", |
650 | error->pinned_bo, | |
651 | error->pinned_bo_count); | |
652 | ||
6361f4ba CW |
653 | for (i = 0; i < ARRAY_SIZE(error->engine); i++) { |
654 | struct drm_i915_error_engine *ee = &error->engine[i]; | |
655 | ||
656 | obj = ee->batchbuffer; | |
ab0e7ff9 | 657 | if (obj) { |
3b3f1650 | 658 | err_puts(m, dev_priv->engine[i]->name); |
6361f4ba | 659 | if (ee->pid != -1) |
b083a087 | 660 | err_printf(m, " (submitted by %s [%d], bans %d)", |
6361f4ba | 661 | ee->comm, |
b083a087 MK |
662 | ee->pid, |
663 | ee->context_bans); | |
e1f12325 MT |
664 | err_printf(m, " --- gtt_offset = 0x%08x %08x\n", |
665 | upper_32_bits(obj->gtt_offset), | |
666 | lower_32_bits(obj->gtt_offset)); | |
3b3f1650 | 667 | print_error_obj(m, dev_priv->engine[i], NULL, obj); |
84734a04 MK |
668 | } |
669 | ||
6361f4ba | 670 | if (ee->num_requests) { |
84734a04 | 671 | err_printf(m, "%s --- %d requests\n", |
3b3f1650 | 672 | dev_priv->engine[i]->name, |
6361f4ba | 673 | ee->num_requests); |
35ca039e CW |
674 | for (j = 0; j < ee->num_requests; j++) |
675 | error_print_request(m, " ", &ee->requests[j]); | |
84734a04 MK |
676 | } |
677 | ||
19eb9189 CW |
678 | if (IS_ERR(ee->waiters)) { |
679 | err_printf(m, "%s --- ? waiters [unable to acquire spinlock]\n", | |
3b3f1650 | 680 | dev_priv->engine[i]->name); |
19eb9189 | 681 | } else if (ee->num_waiters) { |
688e6c72 | 682 | err_printf(m, "%s --- %d waiters\n", |
3b3f1650 | 683 | dev_priv->engine[i]->name, |
6361f4ba CW |
684 | ee->num_waiters); |
685 | for (j = 0; j < ee->num_waiters; j++) { | |
688e6c72 | 686 | err_printf(m, " seqno 0x%08x for %s [%d]\n", |
6361f4ba CW |
687 | ee->waiters[j].seqno, |
688 | ee->waiters[j].comm, | |
689 | ee->waiters[j].pid); | |
688e6c72 CW |
690 | } |
691 | } | |
692 | ||
3b3f1650 | 693 | print_error_obj(m, dev_priv->engine[i], |
fc4c79c3 | 694 | "ringbuffer", ee->ringbuffer); |
84734a04 | 695 | |
3b3f1650 | 696 | print_error_obj(m, dev_priv->engine[i], |
fc4c79c3 | 697 | "HW Status", ee->hws_page); |
3a5a0393 | 698 | |
3b3f1650 | 699 | print_error_obj(m, dev_priv->engine[i], |
fc4c79c3 | 700 | "HW context", ee->ctx); |
f3ce3821 | 701 | |
3b3f1650 | 702 | print_error_obj(m, dev_priv->engine[i], |
fc4c79c3 | 703 | "WA context", ee->wa_ctx); |
f85db059 | 704 | |
3b3f1650 | 705 | print_error_obj(m, dev_priv->engine[i], |
fc4c79c3 | 706 | "WA batchbuffer", ee->wa_batchbuffer); |
84734a04 MK |
707 | } |
708 | ||
fc4c79c3 | 709 | print_error_obj(m, NULL, "Semaphores", error->semaphore); |
0ca36d78 | 710 | |
27b85bea AG |
711 | print_error_obj(m, NULL, "GuC log buffer", error->guc_log); |
712 | ||
84734a04 MK |
713 | if (error->overlay) |
714 | intel_overlay_print_error_state(m, error->overlay); | |
715 | ||
716 | if (error->display) | |
5f56d5f9 | 717 | intel_display_print_error_state(m, dev_priv, error->display); |
84734a04 MK |
718 | |
719 | out: | |
720 | if (m->bytes == 0 && m->err) | |
721 | return m->err; | |
722 | ||
723 | return 0; | |
724 | } | |
725 | ||
726 | int i915_error_state_buf_init(struct drm_i915_error_state_buf *ebuf, | |
0a4cd7c8 | 727 | struct drm_i915_private *i915, |
84734a04 MK |
728 | size_t count, loff_t pos) |
729 | { | |
730 | memset(ebuf, 0, sizeof(*ebuf)); | |
0a4cd7c8 | 731 | ebuf->i915 = i915; |
84734a04 MK |
732 | |
733 | /* We need to have enough room to store any i915_error_state printf | |
734 | * so that we can move it to start position. | |
735 | */ | |
736 | ebuf->size = count + 1 > PAGE_SIZE ? count + 1 : PAGE_SIZE; | |
737 | ebuf->buf = kmalloc(ebuf->size, | |
738 | GFP_TEMPORARY | __GFP_NORETRY | __GFP_NOWARN); | |
739 | ||
740 | if (ebuf->buf == NULL) { | |
741 | ebuf->size = PAGE_SIZE; | |
742 | ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY); | |
743 | } | |
744 | ||
745 | if (ebuf->buf == NULL) { | |
746 | ebuf->size = 128; | |
747 | ebuf->buf = kmalloc(ebuf->size, GFP_TEMPORARY); | |
748 | } | |
749 | ||
750 | if (ebuf->buf == NULL) | |
751 | return -ENOMEM; | |
752 | ||
753 | ebuf->start = pos; | |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
758 | static void i915_error_object_free(struct drm_i915_error_object *obj) | |
759 | { | |
760 | int page; | |
761 | ||
762 | if (obj == NULL) | |
763 | return; | |
764 | ||
765 | for (page = 0; page < obj->page_count; page++) | |
95374d75 | 766 | free_page((unsigned long)obj->pages[page]); |
84734a04 MK |
767 | |
768 | kfree(obj); | |
769 | } | |
770 | ||
771 | static void i915_error_state_free(struct kref *error_ref) | |
772 | { | |
773 | struct drm_i915_error_state *error = container_of(error_ref, | |
774 | typeof(*error), ref); | |
775 | int i; | |
776 | ||
6361f4ba CW |
777 | for (i = 0; i < ARRAY_SIZE(error->engine); i++) { |
778 | struct drm_i915_error_engine *ee = &error->engine[i]; | |
779 | ||
780 | i915_error_object_free(ee->batchbuffer); | |
781 | i915_error_object_free(ee->wa_batchbuffer); | |
782 | i915_error_object_free(ee->ringbuffer); | |
783 | i915_error_object_free(ee->hws_page); | |
784 | i915_error_object_free(ee->ctx); | |
785 | i915_error_object_free(ee->wa_ctx); | |
786 | ||
787 | kfree(ee->requests); | |
19eb9189 CW |
788 | if (!IS_ERR_OR_NULL(ee->waiters)) |
789 | kfree(ee->waiters); | |
84734a04 MK |
790 | } |
791 | ||
51d545d0 | 792 | i915_error_object_free(error->semaphore); |
27b85bea | 793 | i915_error_object_free(error->guc_log); |
0b37a9a9 | 794 | |
c0ce4663 | 795 | for (i = 0; i < ARRAY_SIZE(error->active_bo); i++) |
0b37a9a9 | 796 | kfree(error->active_bo[i]); |
0b37a9a9 | 797 | kfree(error->pinned_bo); |
c0ce4663 | 798 | |
84734a04 MK |
799 | kfree(error->overlay); |
800 | kfree(error->display); | |
801 | kfree(error); | |
802 | } | |
803 | ||
804 | static struct drm_i915_error_object * | |
95374d75 | 805 | i915_error_object_create(struct drm_i915_private *i915, |
058d88c4 | 806 | struct i915_vma *vma) |
84734a04 | 807 | { |
95374d75 CW |
808 | struct i915_ggtt *ggtt = &i915->ggtt; |
809 | const u64 slot = ggtt->error_capture.start; | |
84734a04 | 810 | struct drm_i915_error_object *dst; |
d637c178 | 811 | struct compress compress; |
95374d75 CW |
812 | unsigned long num_pages; |
813 | struct sgt_iter iter; | |
814 | dma_addr_t dma; | |
84734a04 | 815 | |
058d88c4 CW |
816 | if (!vma) |
817 | return NULL; | |
818 | ||
95374d75 | 819 | num_pages = min_t(u64, vma->size, vma->obj->base.size) >> PAGE_SHIFT; |
0a97015d | 820 | num_pages = DIV_ROUND_UP(10 * num_pages, 8); /* worstcase zlib growth */ |
95374d75 CW |
821 | dst = kmalloc(sizeof(*dst) + num_pages * sizeof(u32 *), |
822 | GFP_ATOMIC | __GFP_NOWARN); | |
058d88c4 | 823 | if (!dst) |
84734a04 MK |
824 | return NULL; |
825 | ||
03382dfb CW |
826 | dst->gtt_offset = vma->node.start; |
827 | dst->gtt_size = vma->node.size; | |
95374d75 | 828 | dst->page_count = 0; |
0a97015d CW |
829 | dst->unused = 0; |
830 | ||
d637c178 | 831 | if (!compress_init(&compress)) { |
0a97015d CW |
832 | kfree(dst); |
833 | return NULL; | |
834 | } | |
03382dfb | 835 | |
95374d75 CW |
836 | for_each_sgt_dma(dma, iter, vma->pages) { |
837 | void __iomem *s; | |
838 | int ret; | |
b3c3f5e6 | 839 | |
95374d75 CW |
840 | ggtt->base.insert_page(&ggtt->base, dma, slot, |
841 | I915_CACHE_NONE, 0); | |
b3c3f5e6 | 842 | |
95374d75 | 843 | s = io_mapping_map_atomic_wc(&ggtt->mappable, slot); |
d637c178 | 844 | ret = compress_page(&compress, (void __force *)s, dst); |
95374d75 | 845 | io_mapping_unmap_atomic(s); |
84734a04 | 846 | |
95374d75 | 847 | if (ret) |
84734a04 | 848 | goto unwind; |
84734a04 | 849 | } |
95374d75 | 850 | goto out; |
84734a04 MK |
851 | |
852 | unwind: | |
95374d75 CW |
853 | while (dst->page_count--) |
854 | free_page((unsigned long)dst->pages[dst->page_count]); | |
84734a04 | 855 | kfree(dst); |
95374d75 CW |
856 | dst = NULL; |
857 | ||
858 | out: | |
d637c178 | 859 | compress_fini(&compress, dst); |
4fb84d99 | 860 | ggtt->base.clear_range(&ggtt->base, slot, PAGE_SIZE); |
95374d75 | 861 | return dst; |
84734a04 | 862 | } |
84734a04 | 863 | |
d72d908b CW |
864 | /* The error capture is special as tries to run underneath the normal |
865 | * locking rules - so we use the raw version of the i915_gem_active lookup. | |
866 | */ | |
867 | static inline uint32_t | |
868 | __active_get_seqno(struct i915_gem_active *active) | |
869 | { | |
24327f83 JL |
870 | struct drm_i915_gem_request *request; |
871 | ||
872 | request = __i915_gem_active_peek(active); | |
873 | return request ? request->global_seqno : 0; | |
d72d908b CW |
874 | } |
875 | ||
876 | static inline int | |
877 | __active_get_engine_id(struct i915_gem_active *active) | |
878 | { | |
24327f83 | 879 | struct drm_i915_gem_request *request; |
d72d908b | 880 | |
24327f83 JL |
881 | request = __i915_gem_active_peek(active); |
882 | return request ? request->engine->id : -1; | |
d72d908b CW |
883 | } |
884 | ||
84734a04 | 885 | static void capture_bo(struct drm_i915_error_buffer *err, |
3a448734 | 886 | struct i915_vma *vma) |
84734a04 | 887 | { |
3a448734 | 888 | struct drm_i915_gem_object *obj = vma->obj; |
b4716185 | 889 | int i; |
3a448734 | 890 | |
84734a04 MK |
891 | err->size = obj->base.size; |
892 | err->name = obj->base.name; | |
d72d908b | 893 | |
666796da | 894 | for (i = 0; i < I915_NUM_ENGINES; i++) |
d07f0e59 | 895 | err->rseqno[i] = __active_get_seqno(&vma->last_read[i]); |
5b8c8aec CW |
896 | err->wseqno = __active_get_seqno(&obj->frontbuffer_write); |
897 | err->engine = __active_get_engine_id(&obj->frontbuffer_write); | |
d72d908b | 898 | |
3a448734 | 899 | err->gtt_offset = vma->node.start; |
84734a04 MK |
900 | err->read_domains = obj->base.read_domains; |
901 | err->write_domain = obj->base.write_domain; | |
49ef5294 | 902 | err->fence_reg = vma->fence ? vma->fence->id : -1; |
3e510a8e | 903 | err->tiling = i915_gem_object_get_tiling(obj); |
a4f5ea64 CW |
904 | err->dirty = obj->mm.dirty; |
905 | err->purgeable = obj->mm.madv != I915_MADV_WILLNEED; | |
5cc9ed4b | 906 | err->userptr = obj->userptr.mm != NULL; |
84734a04 MK |
907 | err->cache_level = obj->cache_level; |
908 | } | |
909 | ||
c0ce4663 CW |
910 | static u32 capture_error_bo(struct drm_i915_error_buffer *err, |
911 | int count, struct list_head *head, | |
912 | bool pinned_only) | |
84734a04 | 913 | { |
ca191b13 | 914 | struct i915_vma *vma; |
84734a04 MK |
915 | int i = 0; |
916 | ||
1c7f4bca | 917 | list_for_each_entry(vma, head, vm_link) { |
c0ce4663 CW |
918 | if (pinned_only && !i915_vma_is_pinned(vma)) |
919 | continue; | |
920 | ||
3a448734 | 921 | capture_bo(err++, vma); |
84734a04 MK |
922 | if (++i == count) |
923 | break; | |
924 | } | |
925 | ||
926 | return i; | |
927 | } | |
928 | ||
011cf577 BW |
929 | /* Generate a semi-unique error code. The code is not meant to have meaning, The |
930 | * code's only purpose is to try to prevent false duplicated bug reports by | |
931 | * grossly estimating a GPU error state. | |
932 | * | |
933 | * TODO Ideally, hashing the batchbuffer would be a very nice way to determine | |
934 | * the hang if we could strip the GTT offset information from it. | |
935 | * | |
936 | * It's only a small step better than a random number in its current form. | |
937 | */ | |
938 | static uint32_t i915_error_generate_code(struct drm_i915_private *dev_priv, | |
cb383002 | 939 | struct drm_i915_error_state *error, |
6361f4ba | 940 | int *engine_id) |
011cf577 BW |
941 | { |
942 | uint32_t error_code = 0; | |
943 | int i; | |
944 | ||
945 | /* IPEHR would be an ideal way to detect errors, as it's the gross | |
946 | * measure of "the command that hung." However, has some very common | |
947 | * synchronization commands which almost always appear in the case | |
948 | * strictly a client bug. Use instdone to differentiate those some. | |
949 | */ | |
666796da | 950 | for (i = 0; i < I915_NUM_ENGINES; i++) { |
3fe3b030 | 951 | if (error->engine[i].hangcheck_stalled) { |
6361f4ba CW |
952 | if (engine_id) |
953 | *engine_id = i; | |
cb383002 | 954 | |
d636951e BW |
955 | return error->engine[i].ipehr ^ |
956 | error->engine[i].instdone.instdone; | |
cb383002 MK |
957 | } |
958 | } | |
011cf577 BW |
959 | |
960 | return error_code; | |
961 | } | |
962 | ||
c033666a | 963 | static void i915_gem_record_fences(struct drm_i915_private *dev_priv, |
84734a04 MK |
964 | struct drm_i915_error_state *error) |
965 | { | |
84734a04 MK |
966 | int i; |
967 | ||
c033666a | 968 | if (IS_GEN3(dev_priv) || IS_GEN2(dev_priv)) { |
ce38ab05 | 969 | for (i = 0; i < dev_priv->num_fence_regs; i++) |
eecf613a | 970 | error->fence[i] = I915_READ(FENCE_REG(i)); |
c033666a | 971 | } else if (IS_GEN5(dev_priv) || IS_GEN4(dev_priv)) { |
eecf613a VS |
972 | for (i = 0; i < dev_priv->num_fence_regs; i++) |
973 | error->fence[i] = I915_READ64(FENCE_REG_965_LO(i)); | |
c033666a | 974 | } else if (INTEL_GEN(dev_priv) >= 6) { |
eecf613a VS |
975 | for (i = 0; i < dev_priv->num_fence_regs; i++) |
976 | error->fence[i] = I915_READ64(FENCE_REG_GEN6_LO(i)); | |
977 | } | |
84734a04 MK |
978 | } |
979 | ||
85e17f59 CW |
980 | static inline u32 |
981 | gen8_engine_sync_index(struct intel_engine_cs *engine, | |
982 | struct intel_engine_cs *other) | |
983 | { | |
984 | int idx; | |
985 | ||
986 | /* | |
987 | * rcs -> 0 = vcs, 1 = bcs, 2 = vecs, 3 = vcs2; | |
988 | * vcs -> 0 = bcs, 1 = vecs, 2 = vcs2, 3 = rcs; | |
989 | * bcs -> 0 = vecs, 1 = vcs2. 2 = rcs, 3 = vcs; | |
990 | * vecs -> 0 = vcs2, 1 = rcs, 2 = vcs, 3 = bcs; | |
991 | * vcs2 -> 0 = rcs, 1 = vcs, 2 = bcs, 3 = vecs; | |
992 | */ | |
993 | ||
994 | idx = (other - engine) - 1; | |
995 | if (idx < 0) | |
996 | idx += I915_NUM_ENGINES; | |
997 | ||
998 | return idx; | |
999 | } | |
87f85ebc | 1000 | |
6361f4ba | 1001 | static void gen8_record_semaphore_state(struct drm_i915_error_state *error, |
0bc40be8 | 1002 | struct intel_engine_cs *engine, |
6361f4ba | 1003 | struct drm_i915_error_engine *ee) |
0ca36d78 | 1004 | { |
6361f4ba | 1005 | struct drm_i915_private *dev_priv = engine->i915; |
b4558b46 | 1006 | struct intel_engine_cs *to; |
c3232b18 | 1007 | enum intel_engine_id id; |
0ca36d78 | 1008 | |
51d545d0 | 1009 | if (!error->semaphore) |
6361f4ba | 1010 | return; |
0ca36d78 | 1011 | |
3b3f1650 | 1012 | for_each_engine(to, dev_priv, id) { |
b4558b46 RV |
1013 | int idx; |
1014 | u16 signal_offset; | |
1015 | u32 *tmp; | |
0ca36d78 | 1016 | |
0bc40be8 | 1017 | if (engine == to) |
b4558b46 RV |
1018 | continue; |
1019 | ||
6361f4ba CW |
1020 | signal_offset = |
1021 | (GEN8_SIGNAL_OFFSET(engine, id) & (PAGE_SIZE - 1)) / 4; | |
51d545d0 | 1022 | tmp = error->semaphore->pages[0]; |
85e17f59 | 1023 | idx = gen8_engine_sync_index(engine, to); |
b4558b46 | 1024 | |
6361f4ba | 1025 | ee->semaphore_mboxes[idx] = tmp[signal_offset]; |
0ca36d78 BW |
1026 | } |
1027 | } | |
1028 | ||
6361f4ba CW |
1029 | static void gen6_record_semaphore_state(struct intel_engine_cs *engine, |
1030 | struct drm_i915_error_engine *ee) | |
87f85ebc | 1031 | { |
6361f4ba CW |
1032 | struct drm_i915_private *dev_priv = engine->i915; |
1033 | ||
1034 | ee->semaphore_mboxes[0] = I915_READ(RING_SYNC_0(engine->mmio_base)); | |
1035 | ee->semaphore_mboxes[1] = I915_READ(RING_SYNC_1(engine->mmio_base)); | |
85e17f59 | 1036 | if (HAS_VEBOX(dev_priv)) |
6361f4ba | 1037 | ee->semaphore_mboxes[2] = |
0bc40be8 | 1038 | I915_READ(RING_SYNC_2(engine->mmio_base)); |
87f85ebc BW |
1039 | } |
1040 | ||
6361f4ba CW |
1041 | static void error_record_engine_waiters(struct intel_engine_cs *engine, |
1042 | struct drm_i915_error_engine *ee) | |
688e6c72 CW |
1043 | { |
1044 | struct intel_breadcrumbs *b = &engine->breadcrumbs; | |
1045 | struct drm_i915_error_waiter *waiter; | |
1046 | struct rb_node *rb; | |
1047 | int count; | |
1048 | ||
6361f4ba CW |
1049 | ee->num_waiters = 0; |
1050 | ee->waiters = NULL; | |
688e6c72 | 1051 | |
19eb9189 CW |
1052 | if (RB_EMPTY_ROOT(&b->waiters)) |
1053 | return; | |
1054 | ||
f6168e33 | 1055 | if (!spin_trylock_irq(&b->lock)) { |
19eb9189 CW |
1056 | ee->waiters = ERR_PTR(-EDEADLK); |
1057 | return; | |
1058 | } | |
1059 | ||
688e6c72 CW |
1060 | count = 0; |
1061 | for (rb = rb_first(&b->waiters); rb != NULL; rb = rb_next(rb)) | |
1062 | count++; | |
f6168e33 | 1063 | spin_unlock_irq(&b->lock); |
688e6c72 CW |
1064 | |
1065 | waiter = NULL; | |
1066 | if (count) | |
1067 | waiter = kmalloc_array(count, | |
1068 | sizeof(struct drm_i915_error_waiter), | |
1069 | GFP_ATOMIC); | |
1070 | if (!waiter) | |
1071 | return; | |
1072 | ||
f6168e33 | 1073 | if (!spin_trylock_irq(&b->lock)) { |
19eb9189 CW |
1074 | kfree(waiter); |
1075 | ee->waiters = ERR_PTR(-EDEADLK); | |
1076 | return; | |
1077 | } | |
688e6c72 | 1078 | |
19eb9189 | 1079 | ee->waiters = waiter; |
688e6c72 CW |
1080 | for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) { |
1081 | struct intel_wait *w = container_of(rb, typeof(*w), node); | |
1082 | ||
1083 | strcpy(waiter->comm, w->tsk->comm); | |
1084 | waiter->pid = w->tsk->pid; | |
1085 | waiter->seqno = w->seqno; | |
1086 | waiter++; | |
1087 | ||
6361f4ba | 1088 | if (++ee->num_waiters == count) |
688e6c72 CW |
1089 | break; |
1090 | } | |
f6168e33 | 1091 | spin_unlock_irq(&b->lock); |
688e6c72 CW |
1092 | } |
1093 | ||
6361f4ba CW |
1094 | static void error_record_engine_registers(struct drm_i915_error_state *error, |
1095 | struct intel_engine_cs *engine, | |
1096 | struct drm_i915_error_engine *ee) | |
84734a04 | 1097 | { |
6361f4ba CW |
1098 | struct drm_i915_private *dev_priv = engine->i915; |
1099 | ||
c033666a | 1100 | if (INTEL_GEN(dev_priv) >= 6) { |
6361f4ba CW |
1101 | ee->rc_psmi = I915_READ(RING_PSMI_CTL(engine->mmio_base)); |
1102 | ee->fault_reg = I915_READ(RING_FAULT_REG(engine)); | |
c033666a | 1103 | if (INTEL_GEN(dev_priv) >= 8) |
6361f4ba | 1104 | gen8_record_semaphore_state(error, engine, ee); |
0ca36d78 | 1105 | else |
6361f4ba | 1106 | gen6_record_semaphore_state(engine, ee); |
4e5aabfd BW |
1107 | } |
1108 | ||
c033666a | 1109 | if (INTEL_GEN(dev_priv) >= 4) { |
6361f4ba CW |
1110 | ee->faddr = I915_READ(RING_DMA_FADD(engine->mmio_base)); |
1111 | ee->ipeir = I915_READ(RING_IPEIR(engine->mmio_base)); | |
1112 | ee->ipehr = I915_READ(RING_IPEHR(engine->mmio_base)); | |
6361f4ba CW |
1113 | ee->instps = I915_READ(RING_INSTPS(engine->mmio_base)); |
1114 | ee->bbaddr = I915_READ(RING_BBADDR(engine->mmio_base)); | |
c033666a | 1115 | if (INTEL_GEN(dev_priv) >= 8) { |
6361f4ba CW |
1116 | ee->faddr |= (u64) I915_READ(RING_DMA_FADD_UDW(engine->mmio_base)) << 32; |
1117 | ee->bbaddr |= (u64) I915_READ(RING_BBADDR_UDW(engine->mmio_base)) << 32; | |
13ffadd1 | 1118 | } |
6361f4ba | 1119 | ee->bbstate = I915_READ(RING_BBSTATE(engine->mmio_base)); |
84734a04 | 1120 | } else { |
6361f4ba CW |
1121 | ee->faddr = I915_READ(DMA_FADD_I8XX); |
1122 | ee->ipeir = I915_READ(IPEIR); | |
1123 | ee->ipehr = I915_READ(IPEHR); | |
84734a04 MK |
1124 | } |
1125 | ||
0e704476 | 1126 | intel_engine_get_instdone(engine, &ee->instdone); |
d636951e | 1127 | |
6361f4ba CW |
1128 | ee->waiting = intel_engine_has_waiter(engine); |
1129 | ee->instpm = I915_READ(RING_INSTPM(engine->mmio_base)); | |
7e37f889 | 1130 | ee->acthd = intel_engine_get_active_head(engine); |
6361f4ba | 1131 | ee->seqno = intel_engine_get_seqno(engine); |
cb399eab | 1132 | ee->last_seqno = intel_engine_last_submit(engine); |
6361f4ba CW |
1133 | ee->start = I915_READ_START(engine); |
1134 | ee->head = I915_READ_HEAD(engine); | |
1135 | ee->tail = I915_READ_TAIL(engine); | |
1136 | ee->ctl = I915_READ_CTL(engine); | |
21a2c58a CW |
1137 | if (INTEL_GEN(dev_priv) > 2) |
1138 | ee->mode = I915_READ_MODE(engine); | |
84734a04 | 1139 | |
3177659a | 1140 | if (!HWS_NEEDS_PHYSICAL(dev_priv)) { |
f0f59a00 | 1141 | i915_reg_t mmio; |
f3ce3821 | 1142 | |
c033666a | 1143 | if (IS_GEN7(dev_priv)) { |
0bc40be8 | 1144 | switch (engine->id) { |
f3ce3821 CW |
1145 | default: |
1146 | case RCS: | |
1147 | mmio = RENDER_HWS_PGA_GEN7; | |
1148 | break; | |
1149 | case BCS: | |
1150 | mmio = BLT_HWS_PGA_GEN7; | |
1151 | break; | |
1152 | case VCS: | |
1153 | mmio = BSD_HWS_PGA_GEN7; | |
1154 | break; | |
1155 | case VECS: | |
1156 | mmio = VEBOX_HWS_PGA_GEN7; | |
1157 | break; | |
1158 | } | |
c033666a | 1159 | } else if (IS_GEN6(engine->i915)) { |
0bc40be8 | 1160 | mmio = RING_HWS_PGA_GEN6(engine->mmio_base); |
f3ce3821 CW |
1161 | } else { |
1162 | /* XXX: gen8 returns to sanity */ | |
0bc40be8 | 1163 | mmio = RING_HWS_PGA(engine->mmio_base); |
f3ce3821 CW |
1164 | } |
1165 | ||
6361f4ba | 1166 | ee->hws = I915_READ(mmio); |
f3ce3821 CW |
1167 | } |
1168 | ||
3fe3b030 | 1169 | ee->hangcheck_timestamp = engine->hangcheck.action_timestamp; |
6361f4ba | 1170 | ee->hangcheck_action = engine->hangcheck.action; |
3fe3b030 | 1171 | ee->hangcheck_stalled = engine->hangcheck.stalled; |
6c7a01ec | 1172 | |
c033666a | 1173 | if (USES_PPGTT(dev_priv)) { |
6c7a01ec BW |
1174 | int i; |
1175 | ||
6361f4ba | 1176 | ee->vm_info.gfx_mode = I915_READ(RING_MODE_GEN7(engine)); |
6c7a01ec | 1177 | |
c033666a | 1178 | if (IS_GEN6(dev_priv)) |
6361f4ba | 1179 | ee->vm_info.pp_dir_base = |
0bc40be8 | 1180 | I915_READ(RING_PP_DIR_BASE_READ(engine)); |
c033666a | 1181 | else if (IS_GEN7(dev_priv)) |
6361f4ba | 1182 | ee->vm_info.pp_dir_base = |
0bc40be8 | 1183 | I915_READ(RING_PP_DIR_BASE(engine)); |
c033666a | 1184 | else if (INTEL_GEN(dev_priv) >= 8) |
6c7a01ec | 1185 | for (i = 0; i < 4; i++) { |
6361f4ba | 1186 | ee->vm_info.pdp[i] = |
0bc40be8 | 1187 | I915_READ(GEN8_RING_PDP_UDW(engine, i)); |
6361f4ba CW |
1188 | ee->vm_info.pdp[i] <<= 32; |
1189 | ee->vm_info.pdp[i] |= | |
0bc40be8 | 1190 | I915_READ(GEN8_RING_PDP_LDW(engine, i)); |
6c7a01ec | 1191 | } |
6c7a01ec | 1192 | } |
84734a04 MK |
1193 | } |
1194 | ||
35ca039e CW |
1195 | static void record_request(struct drm_i915_gem_request *request, |
1196 | struct drm_i915_error_request *erq) | |
1197 | { | |
1198 | erq->context = request->ctx->hw_id; | |
bc1d53c6 | 1199 | erq->ban_score = request->ctx->ban_score; |
65e4760e | 1200 | erq->seqno = request->global_seqno; |
35ca039e CW |
1201 | erq->jiffies = request->emitted_jiffies; |
1202 | erq->head = request->head; | |
1203 | erq->tail = request->tail; | |
1204 | ||
1205 | rcu_read_lock(); | |
1206 | erq->pid = request->ctx->pid ? pid_nr(request->ctx->pid) : 0; | |
1207 | rcu_read_unlock(); | |
1208 | } | |
1209 | ||
57bc699d CW |
1210 | static void engine_record_requests(struct intel_engine_cs *engine, |
1211 | struct drm_i915_gem_request *first, | |
1212 | struct drm_i915_error_engine *ee) | |
1213 | { | |
1214 | struct drm_i915_gem_request *request; | |
1215 | int count; | |
1216 | ||
1217 | count = 0; | |
1218 | request = first; | |
73cb9701 | 1219 | list_for_each_entry_from(request, &engine->timeline->requests, link) |
57bc699d CW |
1220 | count++; |
1221 | if (!count) | |
1222 | return; | |
1223 | ||
1224 | ee->requests = kcalloc(count, sizeof(*ee->requests), GFP_ATOMIC); | |
1225 | if (!ee->requests) | |
1226 | return; | |
1227 | ||
1228 | ee->num_requests = count; | |
1229 | ||
1230 | count = 0; | |
1231 | request = first; | |
73cb9701 | 1232 | list_for_each_entry_from(request, &engine->timeline->requests, link) { |
57bc699d CW |
1233 | if (count >= ee->num_requests) { |
1234 | /* | |
1235 | * If the ring request list was changed in | |
1236 | * between the point where the error request | |
1237 | * list was created and dimensioned and this | |
1238 | * point then just exit early to avoid crashes. | |
1239 | * | |
1240 | * We don't need to communicate that the | |
1241 | * request list changed state during error | |
1242 | * state capture and that the error state is | |
1243 | * slightly incorrect as a consequence since we | |
1244 | * are typically only interested in the request | |
1245 | * list state at the point of error state | |
1246 | * capture, not in any changes happening during | |
1247 | * the capture. | |
1248 | */ | |
1249 | break; | |
1250 | } | |
1251 | ||
35ca039e | 1252 | record_request(request, &ee->requests[count++]); |
57bc699d CW |
1253 | } |
1254 | ee->num_requests = count; | |
1255 | } | |
1256 | ||
35ca039e CW |
1257 | static void error_record_engine_execlists(struct intel_engine_cs *engine, |
1258 | struct drm_i915_error_engine *ee) | |
1259 | { | |
1260 | unsigned int n; | |
1261 | ||
1262 | for (n = 0; n < ARRAY_SIZE(engine->execlist_port); n++) | |
1263 | if (engine->execlist_port[n].request) | |
1264 | record_request(engine->execlist_port[n].request, | |
1265 | &ee->execlist[n]); | |
1266 | } | |
1267 | ||
c033666a | 1268 | static void i915_gem_record_rings(struct drm_i915_private *dev_priv, |
84734a04 MK |
1269 | struct drm_i915_error_state *error) |
1270 | { | |
72e96d64 | 1271 | struct i915_ggtt *ggtt = &dev_priv->ggtt; |
57bc699d | 1272 | int i; |
84734a04 | 1273 | |
51d545d0 | 1274 | error->semaphore = |
058d88c4 | 1275 | i915_error_object_create(dev_priv, dev_priv->semaphore); |
6361f4ba | 1276 | |
666796da | 1277 | for (i = 0; i < I915_NUM_ENGINES; i++) { |
3b3f1650 | 1278 | struct intel_engine_cs *engine = dev_priv->engine[i]; |
6361f4ba | 1279 | struct drm_i915_error_engine *ee = &error->engine[i]; |
57bc699d | 1280 | struct drm_i915_gem_request *request; |
372fbb8e | 1281 | |
6361f4ba CW |
1282 | ee->pid = -1; |
1283 | ee->engine_id = -1; | |
eee73b46 | 1284 | |
3b3f1650 | 1285 | if (!engine) |
372fbb8e CW |
1286 | continue; |
1287 | ||
6361f4ba | 1288 | ee->engine_id = i; |
372fbb8e | 1289 | |
6361f4ba CW |
1290 | error_record_engine_registers(error, engine, ee); |
1291 | error_record_engine_waiters(engine, ee); | |
35ca039e | 1292 | error_record_engine_execlists(engine, ee); |
84734a04 | 1293 | |
e2f80391 | 1294 | request = i915_gem_find_active_request(engine); |
ab0e7ff9 | 1295 | if (request) { |
7e37f889 | 1296 | struct intel_ring *ring; |
c84455b4 | 1297 | struct pid *pid; |
ae6c4806 | 1298 | |
c0ce4663 | 1299 | ee->vm = request->ctx->ppgtt ? |
bc3d6744 | 1300 | &request->ctx->ppgtt->base : &ggtt->base; |
ae6c4806 | 1301 | |
ab0e7ff9 CW |
1302 | /* We need to copy these to an anonymous buffer |
1303 | * as the simplest method to avoid being overwritten | |
1304 | * by userspace. | |
1305 | */ | |
6361f4ba | 1306 | ee->batchbuffer = |
ab0e7ff9 | 1307 | i915_error_object_create(dev_priv, |
058d88c4 | 1308 | request->batch); |
ab0e7ff9 | 1309 | |
2d1fe073 | 1310 | if (HAS_BROKEN_CS_TLB(dev_priv)) |
6361f4ba | 1311 | ee->wa_batchbuffer = |
058d88c4 CW |
1312 | i915_error_object_create(dev_priv, |
1313 | engine->scratch); | |
ab0e7ff9 | 1314 | |
058d88c4 CW |
1315 | ee->ctx = |
1316 | i915_error_object_create(dev_priv, | |
1317 | request->ctx->engine[i].state); | |
546b1b6a | 1318 | |
c84455b4 CW |
1319 | pid = request->ctx->pid; |
1320 | if (pid) { | |
ab0e7ff9 CW |
1321 | struct task_struct *task; |
1322 | ||
1323 | rcu_read_lock(); | |
c84455b4 | 1324 | task = pid_task(pid, PIDTYPE_PID); |
ab0e7ff9 | 1325 | if (task) { |
6361f4ba CW |
1326 | strcpy(ee->comm, task->comm); |
1327 | ee->pid = task->pid; | |
ab0e7ff9 CW |
1328 | } |
1329 | rcu_read_unlock(); | |
1330 | } | |
84734a04 | 1331 | |
bc3d6744 CW |
1332 | error->simulated |= |
1333 | request->ctx->flags & CONTEXT_NO_ERROR_CAPTURE; | |
1334 | ||
cdb324bd CW |
1335 | ee->rq_head = request->head; |
1336 | ee->rq_post = request->postfix; | |
1337 | ee->rq_tail = request->tail; | |
1338 | ||
1dae2dfb CW |
1339 | ring = request->ring; |
1340 | ee->cpu_ring_head = ring->head; | |
1341 | ee->cpu_ring_tail = ring->tail; | |
6361f4ba | 1342 | ee->ringbuffer = |
058d88c4 | 1343 | i915_error_object_create(dev_priv, ring->vma); |
57bc699d CW |
1344 | |
1345 | engine_record_requests(engine, request, ee); | |
ba6e0418 | 1346 | } |
84734a04 | 1347 | |
6361f4ba | 1348 | ee->hws_page = |
058d88c4 CW |
1349 | i915_error_object_create(dev_priv, |
1350 | engine->status_page.vma); | |
84734a04 | 1351 | |
058d88c4 CW |
1352 | ee->wa_ctx = |
1353 | i915_error_object_create(dev_priv, engine->wa_ctx.vma); | |
84734a04 MK |
1354 | } |
1355 | } | |
1356 | ||
95f5301d BW |
1357 | static void i915_gem_capture_vm(struct drm_i915_private *dev_priv, |
1358 | struct drm_i915_error_state *error, | |
1359 | struct i915_address_space *vm, | |
c0ce4663 | 1360 | int idx) |
84734a04 | 1361 | { |
c0ce4663 | 1362 | struct drm_i915_error_buffer *active_bo; |
95f5301d | 1363 | struct i915_vma *vma; |
c0ce4663 | 1364 | int count; |
84734a04 | 1365 | |
c0ce4663 | 1366 | count = 0; |
1c7f4bca | 1367 | list_for_each_entry(vma, &vm->active_list, vm_link) |
c0ce4663 | 1368 | count++; |
84734a04 | 1369 | |
c0ce4663 CW |
1370 | active_bo = NULL; |
1371 | if (count) | |
1372 | active_bo = kcalloc(count, sizeof(*active_bo), GFP_ATOMIC); | |
95f5301d | 1373 | if (active_bo) |
c0ce4663 CW |
1374 | count = capture_error_bo(active_bo, count, &vm->active_list, false); |
1375 | else | |
1376 | count = 0; | |
1377 | ||
1378 | error->active_vm[idx] = vm; | |
1379 | error->active_bo[idx] = active_bo; | |
1380 | error->active_bo_count[idx] = count; | |
95f5301d BW |
1381 | } |
1382 | ||
c0ce4663 CW |
1383 | static void i915_capture_active_buffers(struct drm_i915_private *dev_priv, |
1384 | struct drm_i915_error_state *error) | |
95f5301d | 1385 | { |
c0ce4663 CW |
1386 | int cnt = 0, i, j; |
1387 | ||
1388 | BUILD_BUG_ON(ARRAY_SIZE(error->engine) > ARRAY_SIZE(error->active_bo)); | |
1389 | BUILD_BUG_ON(ARRAY_SIZE(error->active_bo) != ARRAY_SIZE(error->active_vm)); | |
1390 | BUILD_BUG_ON(ARRAY_SIZE(error->active_bo) != ARRAY_SIZE(error->active_bo_count)); | |
1391 | ||
1392 | /* Scan each engine looking for unique active contexts/vm */ | |
1393 | for (i = 0; i < ARRAY_SIZE(error->engine); i++) { | |
1394 | struct drm_i915_error_engine *ee = &error->engine[i]; | |
1395 | bool found; | |
1396 | ||
1397 | if (!ee->vm) | |
1398 | continue; | |
3a448734 | 1399 | |
c0ce4663 CW |
1400 | found = false; |
1401 | for (j = 0; j < i && !found; j++) | |
1402 | found = error->engine[j].vm == ee->vm; | |
1403 | if (!found) | |
1404 | i915_gem_capture_vm(dev_priv, error, ee->vm, cnt++); | |
3a448734 | 1405 | } |
84734a04 MK |
1406 | } |
1407 | ||
c0ce4663 CW |
1408 | static void i915_capture_pinned_buffers(struct drm_i915_private *dev_priv, |
1409 | struct drm_i915_error_state *error) | |
1410 | { | |
1411 | struct i915_address_space *vm = &dev_priv->ggtt.base; | |
1412 | struct drm_i915_error_buffer *bo; | |
1413 | struct i915_vma *vma; | |
1414 | int count_inactive, count_active; | |
1415 | ||
1416 | count_inactive = 0; | |
1417 | list_for_each_entry(vma, &vm->active_list, vm_link) | |
1418 | count_inactive++; | |
1419 | ||
1420 | count_active = 0; | |
1421 | list_for_each_entry(vma, &vm->inactive_list, vm_link) | |
1422 | count_active++; | |
1423 | ||
1424 | bo = NULL; | |
1425 | if (count_inactive + count_active) | |
1426 | bo = kcalloc(count_inactive + count_active, | |
1427 | sizeof(*bo), GFP_ATOMIC); | |
1428 | if (!bo) | |
1429 | return; | |
1430 | ||
1431 | count_inactive = capture_error_bo(bo, count_inactive, | |
1432 | &vm->active_list, true); | |
1433 | count_active = capture_error_bo(bo + count_inactive, count_active, | |
1434 | &vm->inactive_list, true); | |
1435 | error->pinned_bo_count = count_inactive + count_active; | |
1436 | error->pinned_bo = bo; | |
1437 | } | |
1438 | ||
27b85bea AG |
1439 | static void i915_gem_capture_guc_log_buffer(struct drm_i915_private *dev_priv, |
1440 | struct drm_i915_error_state *error) | |
1441 | { | |
1442 | /* Capturing log buf contents won't be useful if logging was disabled */ | |
1443 | if (!dev_priv->guc.log.vma || (i915.guc_log_level < 0)) | |
1444 | return; | |
1445 | ||
1446 | error->guc_log = i915_error_object_create(dev_priv, | |
1447 | dev_priv->guc.log.vma); | |
1448 | } | |
1449 | ||
1d762aad BW |
1450 | /* Capture all registers which don't fit into another category. */ |
1451 | static void i915_capture_reg_state(struct drm_i915_private *dev_priv, | |
1452 | struct drm_i915_error_state *error) | |
84734a04 | 1453 | { |
885ea5a8 | 1454 | int i; |
84734a04 | 1455 | |
654c90c6 BW |
1456 | /* General organization |
1457 | * 1. Registers specific to a single generation | |
1458 | * 2. Registers which belong to multiple generations | |
1459 | * 3. Feature specific registers. | |
1460 | * 4. Everything else | |
1461 | * Please try to follow the order. | |
1462 | */ | |
84734a04 | 1463 | |
654c90c6 | 1464 | /* 1: Registers specific to a single generation */ |
11a914c2 | 1465 | if (IS_VALLEYVIEW(dev_priv)) { |
885ea5a8 | 1466 | error->gtier[0] = I915_READ(GTIER); |
843db716 | 1467 | error->ier = I915_READ(VLV_IER); |
40181697 | 1468 | error->forcewake = I915_READ_FW(FORCEWAKE_VLV); |
654c90c6 | 1469 | } |
84734a04 | 1470 | |
5db94019 | 1471 | if (IS_GEN7(dev_priv)) |
654c90c6 | 1472 | error->err_int = I915_READ(GEN7_ERR_INT); |
84734a04 | 1473 | |
5f56d5f9 | 1474 | if (INTEL_GEN(dev_priv) >= 8) { |
6c826f34 MK |
1475 | error->fault_data0 = I915_READ(GEN8_FAULT_TLB_DATA0); |
1476 | error->fault_data1 = I915_READ(GEN8_FAULT_TLB_DATA1); | |
1477 | } | |
1478 | ||
5db94019 | 1479 | if (IS_GEN6(dev_priv)) { |
40181697 | 1480 | error->forcewake = I915_READ_FW(FORCEWAKE); |
91ec5d11 BW |
1481 | error->gab_ctl = I915_READ(GAB_CTL); |
1482 | error->gfx_mode = I915_READ(GFX_MODE); | |
1483 | } | |
84734a04 | 1484 | |
654c90c6 | 1485 | /* 2: Registers which belong to multiple generations */ |
5f56d5f9 | 1486 | if (INTEL_GEN(dev_priv) >= 7) |
40181697 | 1487 | error->forcewake = I915_READ_FW(FORCEWAKE_MT); |
84734a04 | 1488 | |
5f56d5f9 | 1489 | if (INTEL_GEN(dev_priv) >= 6) { |
654c90c6 | 1490 | error->derrmr = I915_READ(DERRMR); |
84734a04 MK |
1491 | error->error = I915_READ(ERROR_GEN6); |
1492 | error->done_reg = I915_READ(DONE_REG); | |
1493 | } | |
1494 | ||
654c90c6 | 1495 | /* 3: Feature specific registers */ |
5db94019 | 1496 | if (IS_GEN6(dev_priv) || IS_GEN7(dev_priv)) { |
91ec5d11 BW |
1497 | error->gam_ecochk = I915_READ(GAM_ECOCHK); |
1498 | error->gac_eco = I915_READ(GAC_ECO_BITS); | |
1499 | } | |
1500 | ||
1501 | /* 4: Everything else */ | |
0031fb96 | 1502 | if (HAS_HW_CONTEXTS(dev_priv)) |
654c90c6 BW |
1503 | error->ccid = I915_READ(CCID); |
1504 | ||
5f56d5f9 | 1505 | if (INTEL_GEN(dev_priv) >= 8) { |
885ea5a8 RV |
1506 | error->ier = I915_READ(GEN8_DE_MISC_IER); |
1507 | for (i = 0; i < 4; i++) | |
1508 | error->gtier[i] = I915_READ(GEN8_GT_IER(i)); | |
6e266956 | 1509 | } else if (HAS_PCH_SPLIT(dev_priv)) { |
843db716 | 1510 | error->ier = I915_READ(DEIER); |
885ea5a8 | 1511 | error->gtier[0] = I915_READ(GTIER); |
5db94019 | 1512 | } else if (IS_GEN2(dev_priv)) { |
843db716 | 1513 | error->ier = I915_READ16(IER); |
11a914c2 | 1514 | } else if (!IS_VALLEYVIEW(dev_priv)) { |
843db716 | 1515 | error->ier = I915_READ(IER); |
654c90c6 | 1516 | } |
654c90c6 BW |
1517 | error->eir = I915_READ(EIR); |
1518 | error->pgtbl_er = I915_READ(PGTBL_ER); | |
1d762aad BW |
1519 | } |
1520 | ||
c033666a | 1521 | static void i915_error_capture_msg(struct drm_i915_private *dev_priv, |
58174462 | 1522 | struct drm_i915_error_state *error, |
14b730fc | 1523 | u32 engine_mask, |
58174462 | 1524 | const char *error_msg) |
cb383002 | 1525 | { |
cb383002 | 1526 | u32 ecode; |
6361f4ba | 1527 | int engine_id = -1, len; |
cb383002 | 1528 | |
6361f4ba | 1529 | ecode = i915_error_generate_code(dev_priv, error, &engine_id); |
cb383002 | 1530 | |
58174462 | 1531 | len = scnprintf(error->error_msg, sizeof(error->error_msg), |
0b5492d6 | 1532 | "GPU HANG: ecode %d:%d:0x%08x", |
6361f4ba | 1533 | INTEL_GEN(dev_priv), engine_id, ecode); |
58174462 | 1534 | |
6361f4ba | 1535 | if (engine_id != -1 && error->engine[engine_id].pid != -1) |
58174462 MK |
1536 | len += scnprintf(error->error_msg + len, |
1537 | sizeof(error->error_msg) - len, | |
1538 | ", in %s [%d]", | |
6361f4ba CW |
1539 | error->engine[engine_id].comm, |
1540 | error->engine[engine_id].pid); | |
58174462 MK |
1541 | |
1542 | scnprintf(error->error_msg + len, sizeof(error->error_msg) - len, | |
1543 | ", reason: %s, action: %s", | |
1544 | error_msg, | |
14b730fc | 1545 | engine_mask ? "reset" : "continue"); |
cb383002 MK |
1546 | } |
1547 | ||
48b031e3 MK |
1548 | static void i915_capture_gen_state(struct drm_i915_private *dev_priv, |
1549 | struct drm_i915_error_state *error) | |
1550 | { | |
eb5be9d0 CW |
1551 | error->iommu = -1; |
1552 | #ifdef CONFIG_INTEL_IOMMU | |
1553 | error->iommu = intel_iommu_gfx_mapped; | |
1554 | #endif | |
48b031e3 | 1555 | error->reset_count = i915_reset_count(&dev_priv->gpu_error); |
62d5d69b | 1556 | error->suspend_count = dev_priv->suspend_count; |
2bd160a1 CW |
1557 | |
1558 | memcpy(&error->device_info, | |
1559 | INTEL_INFO(dev_priv), | |
1560 | sizeof(error->device_info)); | |
48b031e3 MK |
1561 | } |
1562 | ||
9f267eb8 CW |
1563 | static int capture(void *data) |
1564 | { | |
1565 | struct drm_i915_error_state *error = data; | |
1566 | ||
9f267eb8 CW |
1567 | i915_capture_gen_state(error->i915, error); |
1568 | i915_capture_reg_state(error->i915, error); | |
1569 | i915_gem_record_fences(error->i915, error); | |
1570 | i915_gem_record_rings(error->i915, error); | |
1571 | i915_capture_active_buffers(error->i915, error); | |
1572 | i915_capture_pinned_buffers(error->i915, error); | |
27b85bea | 1573 | i915_gem_capture_guc_log_buffer(error->i915, error); |
9f267eb8 CW |
1574 | |
1575 | do_gettimeofday(&error->time); | |
de867c20 CW |
1576 | error->boottime = ktime_to_timeval(ktime_get_boottime()); |
1577 | error->uptime = | |
1578 | ktime_to_timeval(ktime_sub(ktime_get(), | |
1579 | error->i915->gt.last_init_time)); | |
9f267eb8 CW |
1580 | |
1581 | error->overlay = intel_overlay_capture_error_state(error->i915); | |
1582 | error->display = intel_display_capture_error_state(error->i915); | |
1583 | ||
9f267eb8 CW |
1584 | return 0; |
1585 | } | |
1586 | ||
eafc4894 CW |
1587 | #define DAY_AS_SECONDS(x) (24 * 60 * 60 * (x)) |
1588 | ||
1d762aad BW |
1589 | /** |
1590 | * i915_capture_error_state - capture an error record for later analysis | |
1591 | * @dev: drm device | |
1592 | * | |
1593 | * Should be called when an error is detected (either a hang or an error | |
1594 | * interrupt) to capture error state from the time of the error. Fills | |
1595 | * out a structure which becomes available in debugfs for user level tools | |
1596 | * to pick up. | |
1597 | */ | |
c033666a CW |
1598 | void i915_capture_error_state(struct drm_i915_private *dev_priv, |
1599 | u32 engine_mask, | |
58174462 | 1600 | const char *error_msg) |
1d762aad | 1601 | { |
53a4c6b2 | 1602 | static bool warned; |
1d762aad BW |
1603 | struct drm_i915_error_state *error; |
1604 | unsigned long flags; | |
1d762aad | 1605 | |
98a2f411 CW |
1606 | if (!i915.error_capture) |
1607 | return; | |
1608 | ||
9777cca0 CW |
1609 | if (READ_ONCE(dev_priv->gpu_error.first_error)) |
1610 | return; | |
1611 | ||
1d762aad BW |
1612 | /* Account for pipe specific data like PIPE*STAT */ |
1613 | error = kzalloc(sizeof(*error), GFP_ATOMIC); | |
1614 | if (!error) { | |
1615 | DRM_DEBUG_DRIVER("out of memory, not capturing error state\n"); | |
1616 | return; | |
1617 | } | |
1618 | ||
011cf577 | 1619 | kref_init(&error->ref); |
9f267eb8 | 1620 | error->i915 = dev_priv; |
011cf577 | 1621 | |
9f267eb8 | 1622 | stop_machine(capture, error, NULL); |
84734a04 | 1623 | |
c033666a | 1624 | i915_error_capture_msg(dev_priv, error, engine_mask, error_msg); |
cb383002 MK |
1625 | DRM_INFO("%s\n", error->error_msg); |
1626 | ||
bc3d6744 CW |
1627 | if (!error->simulated) { |
1628 | spin_lock_irqsave(&dev_priv->gpu_error.lock, flags); | |
1629 | if (!dev_priv->gpu_error.first_error) { | |
1630 | dev_priv->gpu_error.first_error = error; | |
1631 | error = NULL; | |
1632 | } | |
1633 | spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags); | |
84734a04 | 1634 | } |
84734a04 | 1635 | |
cb383002 | 1636 | if (error) { |
84734a04 | 1637 | i915_error_state_free(&error->ref); |
cb383002 MK |
1638 | return; |
1639 | } | |
1640 | ||
eafc4894 CW |
1641 | if (!warned && |
1642 | ktime_get_real_seconds() - DRIVER_TIMESTAMP < DAY_AS_SECONDS(180)) { | |
cb383002 MK |
1643 | DRM_INFO("GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.\n"); |
1644 | DRM_INFO("Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel\n"); | |
1645 | DRM_INFO("drm/i915 developers can then reassign to the right component if it's not a kernel issue.\n"); | |
1646 | DRM_INFO("The gpu crash dump is required to analyze gpu hangs, so please always attach it.\n"); | |
91c8a326 CW |
1647 | DRM_INFO("GPU crash dump saved to /sys/class/drm/card%d/error\n", |
1648 | dev_priv->drm.primary->index); | |
cb383002 MK |
1649 | warned = true; |
1650 | } | |
84734a04 MK |
1651 | } |
1652 | ||
1653 | void i915_error_state_get(struct drm_device *dev, | |
1654 | struct i915_error_state_file_priv *error_priv) | |
1655 | { | |
fac5e23e | 1656 | struct drm_i915_private *dev_priv = to_i915(dev); |
84734a04 | 1657 | |
5b254c59 | 1658 | spin_lock_irq(&dev_priv->gpu_error.lock); |
84734a04 MK |
1659 | error_priv->error = dev_priv->gpu_error.first_error; |
1660 | if (error_priv->error) | |
1661 | kref_get(&error_priv->error->ref); | |
5b254c59 | 1662 | spin_unlock_irq(&dev_priv->gpu_error.lock); |
84734a04 MK |
1663 | } |
1664 | ||
1665 | void i915_error_state_put(struct i915_error_state_file_priv *error_priv) | |
1666 | { | |
1667 | if (error_priv->error) | |
1668 | kref_put(&error_priv->error->ref, i915_error_state_free); | |
1669 | } | |
1670 | ||
12ff05e7 | 1671 | void i915_destroy_error_state(struct drm_i915_private *dev_priv) |
84734a04 | 1672 | { |
84734a04 | 1673 | struct drm_i915_error_state *error; |
84734a04 | 1674 | |
5b254c59 | 1675 | spin_lock_irq(&dev_priv->gpu_error.lock); |
84734a04 MK |
1676 | error = dev_priv->gpu_error.first_error; |
1677 | dev_priv->gpu_error.first_error = NULL; | |
5b254c59 | 1678 | spin_unlock_irq(&dev_priv->gpu_error.lock); |
84734a04 MK |
1679 | |
1680 | if (error) | |
1681 | kref_put(&error->ref, i915_error_state_free); | |
1682 | } |