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drm/etnaviv: move workqueue to be per GPU
[thirdparty/kernel/stable.git] / drivers / gpu / drm / etnaviv / etnaviv_gpu.c
CommitLineData
a8c21a54
T		 1/*
2 * Copyright (C) 2015 Etnaviv Project
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 as published by
6 * the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#include <linux/component.h>
f54d1867 18#include <linux/dma-fence.h>
a8c21a54
T		 19#include <linux/moduleparam.h>
20#include <linux/of_device.h>
bcdfb5e5 21#include <linux/thermal.h>
ea1f5729
LS		 22
23#include "etnaviv_cmdbuf.h"
a8c21a54
T		 24#include "etnaviv_dump.h"
25#include "etnaviv_gpu.h"
26#include "etnaviv_gem.h"
27#include "etnaviv_mmu.h"
357713ce 28#include "etnaviv_perfmon.h"
a8c21a54
T		 29#include "common.xml.h"
30#include "state.xml.h"
31#include "state_hi.xml.h"
32#include "cmdstream.xml.h"
33
34static const struct platform_device_id gpu_ids[] = {
35 { .name = "etnaviv-gpu,2d" },
36 { },
37};
38
39static bool etnaviv_dump_core = true;
40module_param_named(dump_core, etnaviv_dump_core, bool, 0600);
41
42/*
43 * Driver functions:
44 */
45
46int etnaviv_gpu_get_param(struct etnaviv_gpu *gpu, u32 param, u64 *value)
47{
48 switch (param) {
49 case ETNAVIV_PARAM_GPU_MODEL:
50 *value = gpu->identity.model;
51 break;
52
53 case ETNAVIV_PARAM_GPU_REVISION:
54 *value = gpu->identity.revision;
55 break;
56
57 case ETNAVIV_PARAM_GPU_FEATURES_0:
58 *value = gpu->identity.features;
59 break;
60
61 case ETNAVIV_PARAM_GPU_FEATURES_1:
62 *value = gpu->identity.minor_features0;
63 break;
64
65 case ETNAVIV_PARAM_GPU_FEATURES_2:
66 *value = gpu->identity.minor_features1;
67 break;
68
69 case ETNAVIV_PARAM_GPU_FEATURES_3:
70 *value = gpu->identity.minor_features2;
71 break;
72
73 case ETNAVIV_PARAM_GPU_FEATURES_4:
74 *value = gpu->identity.minor_features3;
75 break;
76
602eb489
RK		 77 case ETNAVIV_PARAM_GPU_FEATURES_5:
78 *value = gpu->identity.minor_features4;
79 break;
80
81 case ETNAVIV_PARAM_GPU_FEATURES_6:
82 *value = gpu->identity.minor_features5;
83 break;
84
a8c21a54
T		 85 case ETNAVIV_PARAM_GPU_STREAM_COUNT:
86 *value = gpu->identity.stream_count;
87 break;
88
89 case ETNAVIV_PARAM_GPU_REGISTER_MAX:
90 *value = gpu->identity.register_max;
91 break;
92
93 case ETNAVIV_PARAM_GPU_THREAD_COUNT:
94 *value = gpu->identity.thread_count;
95 break;
96
97 case ETNAVIV_PARAM_GPU_VERTEX_CACHE_SIZE:
98 *value = gpu->identity.vertex_cache_size;
99 break;
100
101 case ETNAVIV_PARAM_GPU_SHADER_CORE_COUNT:
102 *value = gpu->identity.shader_core_count;
103 break;
104
105 case ETNAVIV_PARAM_GPU_PIXEL_PIPES:
106 *value = gpu->identity.pixel_pipes;
107 break;
108
109 case ETNAVIV_PARAM_GPU_VERTEX_OUTPUT_BUFFER_SIZE:
110 *value = gpu->identity.vertex_output_buffer_size;
111 break;
112
113 case ETNAVIV_PARAM_GPU_BUFFER_SIZE:
114 *value = gpu->identity.buffer_size;
115 break;
116
117 case ETNAVIV_PARAM_GPU_INSTRUCTION_COUNT:
118 *value = gpu->identity.instruction_count;
119 break;
120
121 case ETNAVIV_PARAM_GPU_NUM_CONSTANTS:
122 *value = gpu->identity.num_constants;
123 break;
124
602eb489
RK		 125 case ETNAVIV_PARAM_GPU_NUM_VARYINGS:
126 *value = gpu->identity.varyings_count;
127 break;
128
a8c21a54
T		 129 default:
130 DBG("%s: invalid param: %u", dev_name(gpu->dev), param);
131 return -EINVAL;
132 }
133
134 return 0;
135}
136
472f79dc
RK		 137
138#define etnaviv_is_model_rev(gpu, mod, rev) \
139 ((gpu)->identity.model == chipModel_##mod && \
140 (gpu)->identity.revision == rev)
52f36ba1
RK		 141#define etnaviv_field(val, field) \
142 (((val) & field##__MASK) >> field##__SHIFT)
143
a8c21a54
T		 144static void etnaviv_hw_specs(struct etnaviv_gpu *gpu)
145{
146 if (gpu->identity.minor_features0 &
147 chipMinorFeatures0_MORE_MINOR_FEATURES) {
602eb489
RK		 148 u32 specs[4];
149 unsigned int streams;
a8c21a54
T		 150
151 specs[0] = gpu_read(gpu, VIVS_HI_CHIP_SPECS);
152 specs[1] = gpu_read(gpu, VIVS_HI_CHIP_SPECS_2);
602eb489
RK		 153 specs[2] = gpu_read(gpu, VIVS_HI_CHIP_SPECS_3);
154 specs[3] = gpu_read(gpu, VIVS_HI_CHIP_SPECS_4);
a8c21a54 155
52f36ba1
RK		 156 gpu->identity.stream_count = etnaviv_field(specs[0],
157 VIVS_HI_CHIP_SPECS_STREAM_COUNT);
158 gpu->identity.register_max = etnaviv_field(specs[0],
159 VIVS_HI_CHIP_SPECS_REGISTER_MAX);
160 gpu->identity.thread_count = etnaviv_field(specs[0],
161 VIVS_HI_CHIP_SPECS_THREAD_COUNT);
162 gpu->identity.vertex_cache_size = etnaviv_field(specs[0],
163 VIVS_HI_CHIP_SPECS_VERTEX_CACHE_SIZE);
164 gpu->identity.shader_core_count = etnaviv_field(specs[0],
165 VIVS_HI_CHIP_SPECS_SHADER_CORE_COUNT);
166 gpu->identity.pixel_pipes = etnaviv_field(specs[0],
167 VIVS_HI_CHIP_SPECS_PIXEL_PIPES);
a8c21a54 168 gpu->identity.vertex_output_buffer_size =
52f36ba1
RK		 169 etnaviv_field(specs[0],
170 VIVS_HI_CHIP_SPECS_VERTEX_OUTPUT_BUFFER_SIZE);
171
172 gpu->identity.buffer_size = etnaviv_field(specs[1],
173 VIVS_HI_CHIP_SPECS_2_BUFFER_SIZE);
174 gpu->identity.instruction_count = etnaviv_field(specs[1],
175 VIVS_HI_CHIP_SPECS_2_INSTRUCTION_COUNT);
176 gpu->identity.num_constants = etnaviv_field(specs[1],
177 VIVS_HI_CHIP_SPECS_2_NUM_CONSTANTS);
602eb489
RK		 178
179 gpu->identity.varyings_count = etnaviv_field(specs[2],
180 VIVS_HI_CHIP_SPECS_3_VARYINGS_COUNT);
181
182 /* This overrides the value from older register if non-zero */
183 streams = etnaviv_field(specs[3],
184 VIVS_HI_CHIP_SPECS_4_STREAM_COUNT);
185 if (streams)
186 gpu->identity.stream_count = streams;
a8c21a54
T		 187 }
188
189 /* Fill in the stream count if not specified */
190 if (gpu->identity.stream_count == 0) {
191 if (gpu->identity.model >= 0x1000)
192 gpu->identity.stream_count = 4;
193 else
194 gpu->identity.stream_count = 1;
195 }
196
197 /* Convert the register max value */
198 if (gpu->identity.register_max)
199 gpu->identity.register_max = 1 << gpu->identity.register_max;
507f8991 200 else if (gpu->identity.model == chipModel_GC400)
a8c21a54
T		 201 gpu->identity.register_max = 32;
202 else
203 gpu->identity.register_max = 64;
204
205 /* Convert thread count */
206 if (gpu->identity.thread_count)
207 gpu->identity.thread_count = 1 << gpu->identity.thread_count;
507f8991 208 else if (gpu->identity.model == chipModel_GC400)
a8c21a54 209 gpu->identity.thread_count = 64;
507f8991
RK		 210 else if (gpu->identity.model == chipModel_GC500 ||
211 gpu->identity.model == chipModel_GC530)
a8c21a54
T		 212 gpu->identity.thread_count = 128;
213 else
214 gpu->identity.thread_count = 256;
215
216 if (gpu->identity.vertex_cache_size == 0)
217 gpu->identity.vertex_cache_size = 8;
218
219 if (gpu->identity.shader_core_count == 0) {
220 if (gpu->identity.model >= 0x1000)
221 gpu->identity.shader_core_count = 2;
222 else
223 gpu->identity.shader_core_count = 1;
224 }
225
226 if (gpu->identity.pixel_pipes == 0)
227 gpu->identity.pixel_pipes = 1;
228
229 /* Convert virtex buffer size */
230 if (gpu->identity.vertex_output_buffer_size) {
231 gpu->identity.vertex_output_buffer_size =
232 1 << gpu->identity.vertex_output_buffer_size;
507f8991 233 } else if (gpu->identity.model == chipModel_GC400) {
a8c21a54
T		 234 if (gpu->identity.revision < 0x4000)
235 gpu->identity.vertex_output_buffer_size = 512;
236 else if (gpu->identity.revision < 0x4200)
237 gpu->identity.vertex_output_buffer_size = 256;
238 else
239 gpu->identity.vertex_output_buffer_size = 128;
240 } else {
241 gpu->identity.vertex_output_buffer_size = 512;
242 }
243
244 switch (gpu->identity.instruction_count) {
245 case 0:
472f79dc 246 if (etnaviv_is_model_rev(gpu, GC2000, 0x5108) ||
507f8991 247 gpu->identity.model == chipModel_GC880)
a8c21a54
T		 248 gpu->identity.instruction_count = 512;
249 else
250 gpu->identity.instruction_count = 256;
251 break;
252
253 case 1:
254 gpu->identity.instruction_count = 1024;
255 break;
256
257 case 2:
258 gpu->identity.instruction_count = 2048;
259 break;
260
261 default:
262 gpu->identity.instruction_count = 256;
263 break;
264 }
265
266 if (gpu->identity.num_constants == 0)
267 gpu->identity.num_constants = 168;
602eb489
RK		 268
269 if (gpu->identity.varyings_count == 0) {
270 if (gpu->identity.minor_features1 & chipMinorFeatures1_HALTI0)
271 gpu->identity.varyings_count = 12;
272 else
273 gpu->identity.varyings_count = 8;
274 }
275
276 /*
277 * For some cores, two varyings are consumed for position, so the
278 * maximum varying count needs to be reduced by one.
279 */
280 if (etnaviv_is_model_rev(gpu, GC5000, 0x5434) ||
281 etnaviv_is_model_rev(gpu, GC4000, 0x5222) ||
282 etnaviv_is_model_rev(gpu, GC4000, 0x5245) ||
283 etnaviv_is_model_rev(gpu, GC4000, 0x5208) ||
284 etnaviv_is_model_rev(gpu, GC3000, 0x5435) ||
285 etnaviv_is_model_rev(gpu, GC2200, 0x5244) ||
286 etnaviv_is_model_rev(gpu, GC2100, 0x5108) ||
287 etnaviv_is_model_rev(gpu, GC2000, 0x5108) ||
288 etnaviv_is_model_rev(gpu, GC1500, 0x5246) ||
289 etnaviv_is_model_rev(gpu, GC880, 0x5107) ||
290 etnaviv_is_model_rev(gpu, GC880, 0x5106))
291 gpu->identity.varyings_count -= 1;
a8c21a54
T		 292}
293
294static void etnaviv_hw_identify(struct etnaviv_gpu *gpu)
295{
296 u32 chipIdentity;
297
298 chipIdentity = gpu_read(gpu, VIVS_HI_CHIP_IDENTITY);
299
300 /* Special case for older graphic cores. */
52f36ba1 301 if (etnaviv_field(chipIdentity, VIVS_HI_CHIP_IDENTITY_FAMILY) == 0x01) {
507f8991 302 gpu->identity.model = chipModel_GC500;
52f36ba1
RK		 303 gpu->identity.revision = etnaviv_field(chipIdentity,
304 VIVS_HI_CHIP_IDENTITY_REVISION);
a8c21a54
T		 305 } else {
306
307 gpu->identity.model = gpu_read(gpu, VIVS_HI_CHIP_MODEL);
308 gpu->identity.revision = gpu_read(gpu, VIVS_HI_CHIP_REV);
309
310 /*
311 * !!!! HACK ALERT !!!!
312 * Because people change device IDs without letting software
313 * know about it - here is the hack to make it all look the
314 * same. Only for GC400 family.
315 */
316 if ((gpu->identity.model & 0xff00) == 0x0400 &&
507f8991 317 gpu->identity.model != chipModel_GC420) {
a8c21a54
T		 318 gpu->identity.model = gpu->identity.model & 0x0400;
319 }
320
321 /* Another special case */
472f79dc 322 if (etnaviv_is_model_rev(gpu, GC300, 0x2201)) {
a8c21a54
T		 323 u32 chipDate = gpu_read(gpu, VIVS_HI_CHIP_DATE);
324 u32 chipTime = gpu_read(gpu, VIVS_HI_CHIP_TIME);
325
326 if (chipDate == 0x20080814 && chipTime == 0x12051100) {
327 /*
328 * This IP has an ECO; put the correct
329 * revision in it.
330 */
331 gpu->identity.revision = 0x1051;
332 }
333 }
12ff4bde
LS		 334
335 /*
336 * NXP likes to call the GPU on the i.MX6QP GC2000+, but in
337 * reality it's just a re-branded GC3000. We can identify this
338 * core by the upper half of the revision register being all 1.
339 * Fix model/rev here, so all other places can refer to this
340 * core by its real identity.
341 */
342 if (etnaviv_is_model_rev(gpu, GC2000, 0xffff5450)) {
343 gpu->identity.model = chipModel_GC3000;
344 gpu->identity.revision &= 0xffff;
345 }
a8c21a54
T		 346 }
347
348 dev_info(gpu->dev, "model: GC%x, revision: %x\n",
349 gpu->identity.model, gpu->identity.revision);
350
351 gpu->identity.features = gpu_read(gpu, VIVS_HI_CHIP_FEATURE);
352
353 /* Disable fast clear on GC700. */
507f8991 354 if (gpu->identity.model == chipModel_GC700)
a8c21a54
T		 355 gpu->identity.features &= ~chipFeatures_FAST_CLEAR;
356
507f8991
RK		 357 if ((gpu->identity.model == chipModel_GC500 &&
358 gpu->identity.revision < 2) ||
359 (gpu->identity.model == chipModel_GC300 &&
360 gpu->identity.revision < 0x2000)) {
a8c21a54
T		 361
362 /*
363 * GC500 rev 1.x and GC300 rev < 2.0 doesn't have these
364 * registers.
365 */
366 gpu->identity.minor_features0 = 0;
367 gpu->identity.minor_features1 = 0;
368 gpu->identity.minor_features2 = 0;
369 gpu->identity.minor_features3 = 0;
602eb489
RK		 370 gpu->identity.minor_features4 = 0;
371 gpu->identity.minor_features5 = 0;
a8c21a54
T		 372 } else
373 gpu->identity.minor_features0 =
374 gpu_read(gpu, VIVS_HI_CHIP_MINOR_FEATURE_0);
375
376 if (gpu->identity.minor_features0 &
377 chipMinorFeatures0_MORE_MINOR_FEATURES) {
378 gpu->identity.minor_features1 =
379 gpu_read(gpu, VIVS_HI_CHIP_MINOR_FEATURE_1);
380 gpu->identity.minor_features2 =
381 gpu_read(gpu, VIVS_HI_CHIP_MINOR_FEATURE_2);
382 gpu->identity.minor_features3 =
383 gpu_read(gpu, VIVS_HI_CHIP_MINOR_FEATURE_3);
602eb489
RK		 384 gpu->identity.minor_features4 =
385 gpu_read(gpu, VIVS_HI_CHIP_MINOR_FEATURE_4);
386 gpu->identity.minor_features5 =
387 gpu_read(gpu, VIVS_HI_CHIP_MINOR_FEATURE_5);
a8c21a54
T		 388 }
389
390 /* GC600 idle register reports zero bits where modules aren't present */
391 if (gpu->identity.model == chipModel_GC600) {
392 gpu->idle_mask = VIVS_HI_IDLE_STATE_TX |
393 VIVS_HI_IDLE_STATE_RA |
394 VIVS_HI_IDLE_STATE_SE |
395 VIVS_HI_IDLE_STATE_PA |
396 VIVS_HI_IDLE_STATE_SH |
397 VIVS_HI_IDLE_STATE_PE |
398 VIVS_HI_IDLE_STATE_DE |
399 VIVS_HI_IDLE_STATE_FE;
400 } else {
401 gpu->idle_mask = ~VIVS_HI_IDLE_STATE_AXI_LP;
402 }
403
404 etnaviv_hw_specs(gpu);
405}
406
407static void etnaviv_gpu_load_clock(struct etnaviv_gpu *gpu, u32 clock)
408{
409 gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, clock |
410 VIVS_HI_CLOCK_CONTROL_FSCALE_CMD_LOAD);
411 gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, clock);
412}
413
bcdfb5e5
RK		 414static void etnaviv_gpu_update_clock(struct etnaviv_gpu *gpu)
415{
d79fd1cc
LS		 416 if (gpu->identity.minor_features2 &
417 chipMinorFeatures2_DYNAMIC_FREQUENCY_SCALING) {
418 clk_set_rate(gpu->clk_core,
419 gpu->base_rate_core >> gpu->freq_scale);
420 clk_set_rate(gpu->clk_shader,
421 gpu->base_rate_shader >> gpu->freq_scale);
422 } else {
423 unsigned int fscale = 1 << (6 - gpu->freq_scale);
6eb3ecc3 424 u32 clock = gpu_read(gpu, VIVS_HI_CLOCK_CONTROL);
bcdfb5e5 425
6eb3ecc3
LS		 426 clock &= ~VIVS_HI_CLOCK_CONTROL_FSCALE_VAL__MASK;
427 clock |= VIVS_HI_CLOCK_CONTROL_FSCALE_VAL(fscale);
d79fd1cc
LS		 428 etnaviv_gpu_load_clock(gpu, clock);
429 }
bcdfb5e5
RK		 430}
431
a8c21a54
T		 432static int etnaviv_hw_reset(struct etnaviv_gpu *gpu)
433{
434 u32 control, idle;
435 unsigned long timeout;
436 bool failed = true;
437
a8c21a54
T		 438 /* We hope that the GPU resets in under one second */
439 timeout = jiffies + msecs_to_jiffies(1000);
440
441 while (time_is_after_jiffies(timeout)) {
a8c21a54 442 /* enable clock */
6eb3ecc3
LS		 443 unsigned int fscale = 1 << (6 - gpu->freq_scale);
444 control = VIVS_HI_CLOCK_CONTROL_FSCALE_VAL(fscale);
445 etnaviv_gpu_load_clock(gpu, control);
a8c21a54
T		 446
447 /* isolate the GPU. */
448 control |= VIVS_HI_CLOCK_CONTROL_ISOLATE_GPU;
449 gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, control);
450
451 /* set soft reset. */
452 control |= VIVS_HI_CLOCK_CONTROL_SOFT_RESET;
453 gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, control);
454
455 /* wait for reset. */
40462179 456 usleep_range(10, 20);
a8c21a54
T		 457
458 /* reset soft reset bit. */
459 control &= ~VIVS_HI_CLOCK_CONTROL_SOFT_RESET;
460 gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, control);
461
462 /* reset GPU isolation. */
463 control &= ~VIVS_HI_CLOCK_CONTROL_ISOLATE_GPU;
464 gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, control);
465
466 /* read idle register. */
467 idle = gpu_read(gpu, VIVS_HI_IDLE_STATE);
468
469 /* try reseting again if FE it not idle */
470 if ((idle & VIVS_HI_IDLE_STATE_FE) == 0) {
471 dev_dbg(gpu->dev, "FE is not idle\n");
472 continue;
473 }
474
475 /* read reset register. */
476 control = gpu_read(gpu, VIVS_HI_CLOCK_CONTROL);
477
478 /* is the GPU idle? */
479 if (((control & VIVS_HI_CLOCK_CONTROL_IDLE_3D) == 0) ||
480 ((control & VIVS_HI_CLOCK_CONTROL_IDLE_2D) == 0)) {
481 dev_dbg(gpu->dev, "GPU is not idle\n");
482 continue;
483 }
484
6eb3ecc3
LS		 485 /* disable debug registers, as they are not normally needed */
486 control |= VIVS_HI_CLOCK_CONTROL_DISABLE_DEBUG_REGISTERS;
487 gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, control);
488
a8c21a54
T		 489 failed = false;
490 break;
491 }
492
493 if (failed) {
494 idle = gpu_read(gpu, VIVS_HI_IDLE_STATE);
495 control = gpu_read(gpu, VIVS_HI_CLOCK_CONTROL);
496
497 dev_err(gpu->dev, "GPU failed to reset: FE %sidle, 3D %sidle, 2D %sidle\n",
498 idle & VIVS_HI_IDLE_STATE_FE ? "" : "not ",
499 control & VIVS_HI_CLOCK_CONTROL_IDLE_3D ? "" : "not ",
500 control & VIVS_HI_CLOCK_CONTROL_IDLE_2D ? "" : "not ");
501
502 return -EBUSY;
503 }
504
505 /* We rely on the GPU running, so program the clock */
bcdfb5e5 506 etnaviv_gpu_update_clock(gpu);
a8c21a54
T		 507
508 return 0;
509}
510
7d0c6e71
RK		 511static void etnaviv_gpu_enable_mlcg(struct etnaviv_gpu *gpu)
512{
513 u32 pmc, ppc;
514
515 /* enable clock gating */
516 ppc = gpu_read(gpu, VIVS_PM_POWER_CONTROLS);
517 ppc |= VIVS_PM_POWER_CONTROLS_ENABLE_MODULE_CLOCK_GATING;
518
519 /* Disable stall module clock gating for 4.3.0.1 and 4.3.0.2 revs */
520 if (gpu->identity.revision == 0x4301 ||
521 gpu->identity.revision == 0x4302)
522 ppc |= VIVS_PM_POWER_CONTROLS_DISABLE_STALL_MODULE_CLOCK_GATING;
523
524 gpu_write(gpu, VIVS_PM_POWER_CONTROLS, ppc);
525
526 pmc = gpu_read(gpu, VIVS_PM_MODULE_CONTROLS);
527
7cef6004 528 /* Disable PA clock gating for GC400+ without bugfix except for GC420 */
7d0c6e71 529 if (gpu->identity.model >= chipModel_GC400 &&
7cef6004
LS		 530 gpu->identity.model != chipModel_GC420 &&
531 !(gpu->identity.minor_features3 & chipMinorFeatures3_BUG_FIXES12))
7d0c6e71
RK		 532 pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_PA;
533
534 /*
535 * Disable PE clock gating on revs < 5.0.0.0 when HZ is
536 * present without a bug fix.
537 */
538 if (gpu->identity.revision < 0x5000 &&
539 gpu->identity.minor_features0 & chipMinorFeatures0_HZ &&
540 !(gpu->identity.minor_features1 &
541 chipMinorFeatures1_DISABLE_PE_GATING))
542 pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_PE;
543
544 if (gpu->identity.revision < 0x5422)
545 pmc |= BIT(15); /* Unknown bit */
546
7cef6004
LS		 547 /* Disable TX clock gating on affected core revisions. */
548 if (etnaviv_is_model_rev(gpu, GC4000, 0x5222) ||
549 etnaviv_is_model_rev(gpu, GC2000, 0x5108))
550 pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_TX;
551
7d0c6e71
RK		 552 pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_HZ;
553 pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_EZ;
554
555 gpu_write(gpu, VIVS_PM_MODULE_CONTROLS, pmc);
556}
557
229855b6
LS		 558void etnaviv_gpu_start_fe(struct etnaviv_gpu *gpu, u32 address, u16 prefetch)
559{
560 gpu_write(gpu, VIVS_FE_COMMAND_ADDRESS, address);
561 gpu_write(gpu, VIVS_FE_COMMAND_CONTROL,
562 VIVS_FE_COMMAND_CONTROL_ENABLE |
563 VIVS_FE_COMMAND_CONTROL_PREFETCH(prefetch));
564}
565
e17a0ded
WL		 566static void etnaviv_gpu_setup_pulse_eater(struct etnaviv_gpu *gpu)
567{
568 /*
569 * Base value for VIVS_PM_PULSE_EATER register on models where it
570 * cannot be read, extracted from vivante kernel driver.
571 */
572 u32 pulse_eater = 0x01590880;
573
574 if (etnaviv_is_model_rev(gpu, GC4000, 0x5208) ||
575 etnaviv_is_model_rev(gpu, GC4000, 0x5222)) {
576 pulse_eater |= BIT(23);
577
578 }
579
580 if (etnaviv_is_model_rev(gpu, GC1000, 0x5039) ||
581 etnaviv_is_model_rev(gpu, GC1000, 0x5040)) {
582 pulse_eater &= ~BIT(16);
583 pulse_eater |= BIT(17);
584 }
585
586 if ((gpu->identity.revision > 0x5420) &&
587 (gpu->identity.features & chipFeatures_PIPE_3D))
588 {
589 /* Performance fix: disable internal DFS */
590 pulse_eater = gpu_read(gpu, VIVS_PM_PULSE_EATER);
591 pulse_eater |= BIT(18);
592 }
593
594 gpu_write(gpu, VIVS_PM_PULSE_EATER, pulse_eater);
595}
596
a8c21a54
T		 597static void etnaviv_gpu_hw_init(struct etnaviv_gpu *gpu)
598{
599 u16 prefetch;
600
472f79dc
RK		 601 if ((etnaviv_is_model_rev(gpu, GC320, 0x5007) ||
602 etnaviv_is_model_rev(gpu, GC320, 0x5220)) &&
603 gpu_read(gpu, VIVS_HI_CHIP_TIME) != 0x2062400) {
a8c21a54
T		 604 u32 mc_memory_debug;
605
606 mc_memory_debug = gpu_read(gpu, VIVS_MC_DEBUG_MEMORY) & ~0xff;
607
608 if (gpu->identity.revision == 0x5007)
609 mc_memory_debug |= 0x0c;
610 else
611 mc_memory_debug |= 0x08;
612
613 gpu_write(gpu, VIVS_MC_DEBUG_MEMORY, mc_memory_debug);
614 }
615
7d0c6e71
RK		 616 /* enable module-level clock gating */
617 etnaviv_gpu_enable_mlcg(gpu);
618
a8c21a54
T		 619 /*
620 * Update GPU AXI cache atttribute to "cacheable, no allocate".
621 * This is necessary to prevent the iMX6 SoC locking up.
622 */
623 gpu_write(gpu, VIVS_HI_AXI_CONFIG,
624 VIVS_HI_AXI_CONFIG_AWCACHE(2) |
625 VIVS_HI_AXI_CONFIG_ARCACHE(2));
626
627 /* GC2000 rev 5108 needs a special bus config */
472f79dc 628 if (etnaviv_is_model_rev(gpu, GC2000, 0x5108)) {
a8c21a54
T		 629 u32 bus_config = gpu_read(gpu, VIVS_MC_BUS_CONFIG);
630 bus_config &= ~(VIVS_MC_BUS_CONFIG_FE_BUS_CONFIG__MASK |
631 VIVS_MC_BUS_CONFIG_TX_BUS_CONFIG__MASK);
632 bus_config |= VIVS_MC_BUS_CONFIG_FE_BUS_CONFIG(1) |
633 VIVS_MC_BUS_CONFIG_TX_BUS_CONFIG(0);
634 gpu_write(gpu, VIVS_MC_BUS_CONFIG, bus_config);
635 }
636
e17a0ded
WL		 637 /* setup the pulse eater */
638 etnaviv_gpu_setup_pulse_eater(gpu);
639
99f861bc 640 /* setup the MMU */
e095c8fe 641 etnaviv_iommu_restore(gpu);
a8c21a54
T		 642
643 /* Start command processor */
644 prefetch = etnaviv_buffer_init(gpu);
645
646 gpu_write(gpu, VIVS_HI_INTR_ENBL, ~0U);
c3ef4b8c 647 etnaviv_gpu_start_fe(gpu, etnaviv_cmdbuf_get_va(gpu->buffer),
229855b6 648 prefetch);
a8c21a54
T		 649}
650
651int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
652{
653 int ret, i;
a8c21a54
T		 654
655 ret = pm_runtime_get_sync(gpu->dev);
1409df04
LS		 656 if (ret < 0) {
657 dev_err(gpu->dev, "Failed to enable GPU power domain\n");
a8c21a54 658 return ret;
1409df04 659 }
a8c21a54
T		 660
661 etnaviv_hw_identify(gpu);
662
663 if (gpu->identity.model == 0) {
664 dev_err(gpu->dev, "Unknown GPU model\n");
f6427760
RK		 665 ret = -ENXIO;
666 goto fail;
a8c21a54
T		 667 }
668
b98c6688
RK		 669 /* Exclude VG cores with FE2.0 */
670 if (gpu->identity.features & chipFeatures_PIPE_VG &&
671 gpu->identity.features & chipFeatures_FE20) {
672 dev_info(gpu->dev, "Ignoring GPU with VG and FE2.0\n");
673 ret = -ENXIO;
674 goto fail;
675 }
676
2144fff7
LS		 677 /*
678 * Set the GPU linear window to be at the end of the DMA window, where
679 * the CMA area is likely to reside. This ensures that we are able to
680 * map the command buffers while having the linear window overlap as
681 * much RAM as possible, so we can optimize mappings for other buffers.
682 *
683 * For 3D cores only do this if MC2.0 is present, as with MC1.0 it leads
684 * to different views of the memory on the individual engines.
685 */
686 if (!(gpu->identity.features & chipFeatures_PIPE_3D) ||
687 (gpu->identity.minor_features0 & chipMinorFeatures0_MC20)) {
688 u32 dma_mask = (u32)dma_get_required_mask(gpu->dev);
689 if (dma_mask < PHYS_OFFSET + SZ_2G)
690 gpu->memory_base = PHYS_OFFSET;
691 else
692 gpu->memory_base = dma_mask - SZ_2G + 1;
1db01279
LS		 693 } else if (PHYS_OFFSET >= SZ_2G) {
694 dev_info(gpu->dev, "Need to move linear window on MC1.0, disabling TS\n");
695 gpu->memory_base = PHYS_OFFSET;
696 gpu->identity.features &= ~chipFeatures_FAST_CLEAR;
2144fff7
LS		 697 }
698
a8c21a54 699 ret = etnaviv_hw_reset(gpu);
1409df04
LS		 700 if (ret) {
701 dev_err(gpu->dev, "GPU reset failed\n");
a8c21a54 702 goto fail;
1409df04 703 }
a8c21a54 704
dd34bb96
LS		 705 gpu->mmu = etnaviv_iommu_new(gpu);
706 if (IS_ERR(gpu->mmu)) {
1409df04 707 dev_err(gpu->dev, "Failed to instantiate GPU IOMMU\n");
dd34bb96 708 ret = PTR_ERR(gpu->mmu);
a8c21a54
T		 709 goto fail;
710 }
711
e66774dd
LS		 712 gpu->cmdbuf_suballoc = etnaviv_cmdbuf_suballoc_new(gpu);
713 if (IS_ERR(gpu->cmdbuf_suballoc)) {
714 dev_err(gpu->dev, "Failed to create cmdbuf suballocator\n");
715 ret = PTR_ERR(gpu->cmdbuf_suballoc);
716 goto fail;
717 }
718
a8c21a54 719 /* Create buffer: */
4fc3e66a 720 gpu->buffer = etnaviv_cmdbuf_new(gpu->cmdbuf_suballoc, PAGE_SIZE, 0, 0);
a8c21a54
T		 721 if (!gpu->buffer) {
722 ret = -ENOMEM;
723 dev_err(gpu->dev, "could not create command buffer\n");
45d16a6d 724 goto destroy_iommu;
a8c21a54 725 }
acfee0ec
LS		 726
727 if (gpu->mmu->version == ETNAVIV_IOMMU_V1 &&
c3ef4b8c 728 etnaviv_cmdbuf_get_va(gpu->buffer) > 0x80000000) {
a8c21a54
T		 729 ret = -EINVAL;
730 dev_err(gpu->dev,
731 "command buffer outside valid memory window\n");
732 goto free_buffer;
733 }
734
735 /* Setup event management */
736 spin_lock_init(&gpu->event_spinlock);
737 init_completion(&gpu->event_free);
355502e0
CG		 738 bitmap_zero(gpu->event_bitmap, ETNA_NR_EVENTS);
739 for (i = 0; i < ARRAY_SIZE(gpu->event); i++)
a8c21a54 740 complete(&gpu->event_free);
a8c21a54
T		 741
742 /* Now program the hardware */
743 mutex_lock(&gpu->lock);
744 etnaviv_gpu_hw_init(gpu);
f6086311 745 gpu->exec_state = -1;
a8c21a54
T		 746 mutex_unlock(&gpu->lock);
747
748 pm_runtime_mark_last_busy(gpu->dev);
749 pm_runtime_put_autosuspend(gpu->dev);
750
751 return 0;
752
753free_buffer:
ea1f5729 754 etnaviv_cmdbuf_free(gpu->buffer);
a8c21a54 755 gpu->buffer = NULL;
45d16a6d
LS		 756destroy_iommu:
757 etnaviv_iommu_destroy(gpu->mmu);
758 gpu->mmu = NULL;
a8c21a54
T		 759fail:
760 pm_runtime_mark_last_busy(gpu->dev);
761 pm_runtime_put_autosuspend(gpu->dev);
762
763 return ret;
764}
765
766#ifdef CONFIG_DEBUG_FS
767struct dma_debug {
768 u32 address[2];
769 u32 state[2];
770};
771
772static void verify_dma(struct etnaviv_gpu *gpu, struct dma_debug *debug)
773{
774 u32 i;
775
776 debug->address[0] = gpu_read(gpu, VIVS_FE_DMA_ADDRESS);
777 debug->state[0] = gpu_read(gpu, VIVS_FE_DMA_DEBUG_STATE);
778
779 for (i = 0; i < 500; i++) {
780 debug->address[1] = gpu_read(gpu, VIVS_FE_DMA_ADDRESS);
781 debug->state[1] = gpu_read(gpu, VIVS_FE_DMA_DEBUG_STATE);
782
783 if (debug->address[0] != debug->address[1])
784 break;
785
786 if (debug->state[0] != debug->state[1])
787 break;
788 }
789}
790
791int etnaviv_gpu_debugfs(struct etnaviv_gpu *gpu, struct seq_file *m)
792{
793 struct dma_debug debug;
794 u32 dma_lo, dma_hi, axi, idle;
795 int ret;
796
797 seq_printf(m, "%s Status:\n", dev_name(gpu->dev));
798
799 ret = pm_runtime_get_sync(gpu->dev);
800 if (ret < 0)
801 return ret;
802
803 dma_lo = gpu_read(gpu, VIVS_FE_DMA_LOW);
804 dma_hi = gpu_read(gpu, VIVS_FE_DMA_HIGH);
805 axi = gpu_read(gpu, VIVS_HI_AXI_STATUS);
806 idle = gpu_read(gpu, VIVS_HI_IDLE_STATE);
807
808 verify_dma(gpu, &debug);
809
810 seq_puts(m, "\tfeatures\n");
811 seq_printf(m, "\t minor_features0: 0x%08x\n",
812 gpu->identity.minor_features0);
813 seq_printf(m, "\t minor_features1: 0x%08x\n",
814 gpu->identity.minor_features1);
815 seq_printf(m, "\t minor_features2: 0x%08x\n",
816 gpu->identity.minor_features2);
817 seq_printf(m, "\t minor_features3: 0x%08x\n",
818 gpu->identity.minor_features3);
602eb489
RK		 819 seq_printf(m, "\t minor_features4: 0x%08x\n",
820 gpu->identity.minor_features4);
821 seq_printf(m, "\t minor_features5: 0x%08x\n",
822 gpu->identity.minor_features5);
a8c21a54
T		 823
824 seq_puts(m, "\tspecs\n");
825 seq_printf(m, "\t stream_count: %d\n",
826 gpu->identity.stream_count);
827 seq_printf(m, "\t register_max: %d\n",
828 gpu->identity.register_max);
829 seq_printf(m, "\t thread_count: %d\n",
830 gpu->identity.thread_count);
831 seq_printf(m, "\t vertex_cache_size: %d\n",
832 gpu->identity.vertex_cache_size);
833 seq_printf(m, "\t shader_core_count: %d\n",
834 gpu->identity.shader_core_count);
835 seq_printf(m, "\t pixel_pipes: %d\n",
836 gpu->identity.pixel_pipes);
837 seq_printf(m, "\t vertex_output_buffer_size: %d\n",
838 gpu->identity.vertex_output_buffer_size);
839 seq_printf(m, "\t buffer_size: %d\n",
840 gpu->identity.buffer_size);
841 seq_printf(m, "\t instruction_count: %d\n",
842 gpu->identity.instruction_count);
843 seq_printf(m, "\t num_constants: %d\n",
844 gpu->identity.num_constants);
602eb489
RK		 845 seq_printf(m, "\t varyings_count: %d\n",
846 gpu->identity.varyings_count);
a8c21a54
T		 847
848 seq_printf(m, "\taxi: 0x%08x\n", axi);
849 seq_printf(m, "\tidle: 0x%08x\n", idle);
850 idle |= ~gpu->idle_mask & ~VIVS_HI_IDLE_STATE_AXI_LP;
851 if ((idle & VIVS_HI_IDLE_STATE_FE) == 0)
852 seq_puts(m, "\t FE is not idle\n");
853 if ((idle & VIVS_HI_IDLE_STATE_DE) == 0)
854 seq_puts(m, "\t DE is not idle\n");
855 if ((idle & VIVS_HI_IDLE_STATE_PE) == 0)
856 seq_puts(m, "\t PE is not idle\n");
857 if ((idle & VIVS_HI_IDLE_STATE_SH) == 0)
858 seq_puts(m, "\t SH is not idle\n");
859 if ((idle & VIVS_HI_IDLE_STATE_PA) == 0)
860 seq_puts(m, "\t PA is not idle\n");
861 if ((idle & VIVS_HI_IDLE_STATE_SE) == 0)
862 seq_puts(m, "\t SE is not idle\n");
863 if ((idle & VIVS_HI_IDLE_STATE_RA) == 0)
864 seq_puts(m, "\t RA is not idle\n");
865 if ((idle & VIVS_HI_IDLE_STATE_TX) == 0)
866 seq_puts(m, "\t TX is not idle\n");
867 if ((idle & VIVS_HI_IDLE_STATE_VG) == 0)
868 seq_puts(m, "\t VG is not idle\n");
869 if ((idle & VIVS_HI_IDLE_STATE_IM) == 0)
870 seq_puts(m, "\t IM is not idle\n");
871 if ((idle & VIVS_HI_IDLE_STATE_FP) == 0)
872 seq_puts(m, "\t FP is not idle\n");
873 if ((idle & VIVS_HI_IDLE_STATE_TS) == 0)
874 seq_puts(m, "\t TS is not idle\n");
875 if (idle & VIVS_HI_IDLE_STATE_AXI_LP)
876 seq_puts(m, "\t AXI low power mode\n");
877
878 if (gpu->identity.features & chipFeatures_DEBUG_MODE) {
879 u32 read0 = gpu_read(gpu, VIVS_MC_DEBUG_READ0);
880 u32 read1 = gpu_read(gpu, VIVS_MC_DEBUG_READ1);
881 u32 write = gpu_read(gpu, VIVS_MC_DEBUG_WRITE);
882
883 seq_puts(m, "\tMC\n");
884 seq_printf(m, "\t read0: 0x%08x\n", read0);
885 seq_printf(m, "\t read1: 0x%08x\n", read1);
886 seq_printf(m, "\t write: 0x%08x\n", write);
887 }
888
889 seq_puts(m, "\tDMA ");
890
891 if (debug.address[0] == debug.address[1] &&
892 debug.state[0] == debug.state[1]) {
893 seq_puts(m, "seems to be stuck\n");
894 } else if (debug.address[0] == debug.address[1]) {
c01e0159 895 seq_puts(m, "address is constant\n");
a8c21a54 896 } else {
c01e0159 897 seq_puts(m, "is running\n");
a8c21a54
T		 898 }
899
900 seq_printf(m, "\t address 0: 0x%08x\n", debug.address[0]);
901 seq_printf(m, "\t address 1: 0x%08x\n", debug.address[1]);
902 seq_printf(m, "\t state 0: 0x%08x\n", debug.state[0]);
903 seq_printf(m, "\t state 1: 0x%08x\n", debug.state[1]);
904 seq_printf(m, "\t last fetch 64 bit word: 0x%08x 0x%08x\n",
905 dma_lo, dma_hi);
906
907 ret = 0;
908
909 pm_runtime_mark_last_busy(gpu->dev);
910 pm_runtime_put_autosuspend(gpu->dev);
911
912 return ret;
913}
914#endif
915
a8c21a54
T		 916/*
917 * Hangcheck detection for locked gpu:
918 */
919static void recover_worker(struct work_struct *work)
920{
921 struct etnaviv_gpu *gpu = container_of(work, struct etnaviv_gpu,
922 recover_work);
923 unsigned long flags;
355502e0 924 unsigned int i = 0;
a8c21a54
T		 925
926 dev_err(gpu->dev, "hangcheck recover!\n");
927
928 if (pm_runtime_get_sync(gpu->dev) < 0)
929 return;
930
931 mutex_lock(&gpu->lock);
932
933 /* Only catch the first event, or when manually re-armed */
934 if (etnaviv_dump_core) {
935 etnaviv_core_dump(gpu);
936 etnaviv_dump_core = false;
937 }
938
939 etnaviv_hw_reset(gpu);
940
941 /* complete all events, the GPU won't do it after the reset */
942 spin_lock_irqsave(&gpu->event_spinlock, flags);
355502e0 943 for_each_set_bit_from(i, gpu->event_bitmap, ETNA_NR_EVENTS) {
f54d1867 944 dma_fence_signal(gpu->event[i].fence);
a8c21a54 945 gpu->event[i].fence = NULL;
a8c21a54 946 complete(&gpu->event_free);
a8c21a54 947 }
355502e0 948 bitmap_zero(gpu->event_bitmap, ETNA_NR_EVENTS);
a8c21a54
T		 949 spin_unlock_irqrestore(&gpu->event_spinlock, flags);
950 gpu->completed_fence = gpu->active_fence;
951
952 etnaviv_gpu_hw_init(gpu);
1b94a9b7 953 gpu->lastctx = NULL;
f6086311 954 gpu->exec_state = -1;
a8c21a54
T		 955
956 mutex_unlock(&gpu->lock);
957 pm_runtime_mark_last_busy(gpu->dev);
958 pm_runtime_put_autosuspend(gpu->dev);
959
960 /* Retire the buffer objects in a work */
a7790d78 961 queue_work(gpu->wq, &gpu->retire_work);
a8c21a54
T		 962}
963
964static void hangcheck_timer_reset(struct etnaviv_gpu *gpu)
965{
966 DBG("%s", dev_name(gpu->dev));
967 mod_timer(&gpu->hangcheck_timer,
968 round_jiffies_up(jiffies + DRM_ETNAVIV_HANGCHECK_JIFFIES));
969}
970
43b70524 971static void hangcheck_handler(struct timer_list *t)
a8c21a54 972{
43b70524 973 struct etnaviv_gpu *gpu = from_timer(gpu, t, hangcheck_timer);
a8c21a54
T		 974 u32 fence = gpu->completed_fence;
975 bool progress = false;
976
977 if (fence != gpu->hangcheck_fence) {
978 gpu->hangcheck_fence = fence;
979 progress = true;
980 }
981
982 if (!progress) {
983 u32 dma_addr = gpu_read(gpu, VIVS_FE_DMA_ADDRESS);
984 int change = dma_addr - gpu->hangcheck_dma_addr;
985
986 if (change < 0 || change > 16) {
987 gpu->hangcheck_dma_addr = dma_addr;
988 progress = true;
989 }
990 }
991
992 if (!progress && fence_after(gpu->active_fence, fence)) {
993 dev_err(gpu->dev, "hangcheck detected gpu lockup!\n");
994 dev_err(gpu->dev, " completed fence: %u\n", fence);
995 dev_err(gpu->dev, " active fence: %u\n",
996 gpu->active_fence);
a7790d78 997 queue_work(gpu->wq, &gpu->recover_work);
a8c21a54
T		 998 }
999
1000 /* if still more pending work, reset the hangcheck timer: */
1001 if (fence_after(gpu->active_fence, gpu->hangcheck_fence))
1002 hangcheck_timer_reset(gpu);
1003}
1004
1005static void hangcheck_disable(struct etnaviv_gpu *gpu)
1006{
1007 del_timer_sync(&gpu->hangcheck_timer);
1008 cancel_work_sync(&gpu->recover_work);
1009}
1010
1011/* fence object management */
1012struct etnaviv_fence {
1013 struct etnaviv_gpu *gpu;
f54d1867 1014 struct dma_fence base;
a8c21a54
T		 1015};
1016
f54d1867 1017static inline struct etnaviv_fence *to_etnaviv_fence(struct dma_fence *fence)
a8c21a54
T		 1018{
1019 return container_of(fence, struct etnaviv_fence, base);
1020}
1021
f54d1867 1022static const char *etnaviv_fence_get_driver_name(struct dma_fence *fence)
a8c21a54
T		 1023{
1024 return "etnaviv";
1025}
1026
f54d1867 1027static const char *etnaviv_fence_get_timeline_name(struct dma_fence *fence)
a8c21a54
T		 1028{
1029 struct etnaviv_fence *f = to_etnaviv_fence(fence);
1030
1031 return dev_name(f->gpu->dev);
1032}
1033
f54d1867 1034static bool etnaviv_fence_enable_signaling(struct dma_fence *fence)
a8c21a54
T		 1035{
1036 return true;
1037}
1038
f54d1867 1039static bool etnaviv_fence_signaled(struct dma_fence *fence)
a8c21a54
T		 1040{
1041 struct etnaviv_fence *f = to_etnaviv_fence(fence);
1042
1043 return fence_completed(f->gpu, f->base.seqno);
1044}
1045
f54d1867 1046static void etnaviv_fence_release(struct dma_fence *fence)
a8c21a54
T		 1047{
1048 struct etnaviv_fence *f = to_etnaviv_fence(fence);
1049
1050 kfree_rcu(f, base.rcu);
1051}
1052
f54d1867 1053static const struct dma_fence_ops etnaviv_fence_ops = {
a8c21a54
T		 1054 .get_driver_name = etnaviv_fence_get_driver_name,
1055 .get_timeline_name = etnaviv_fence_get_timeline_name,
1056 .enable_signaling = etnaviv_fence_enable_signaling,
1057 .signaled = etnaviv_fence_signaled,
f54d1867 1058 .wait = dma_fence_default_wait,
a8c21a54
T		 1059 .release = etnaviv_fence_release,
1060};
1061
f54d1867 1062static struct dma_fence *etnaviv_gpu_fence_alloc(struct etnaviv_gpu *gpu)
a8c21a54
T		 1063{
1064 struct etnaviv_fence *f;
1065
b27734c2
LS		 1066 /*
1067 * GPU lock must already be held, otherwise fence completion order might
1068 * not match the seqno order assigned here.
1069 */
1070 lockdep_assert_held(&gpu->lock);
1071
a8c21a54
T		 1072 f = kzalloc(sizeof(*f), GFP_KERNEL);
1073 if (!f)
1074 return NULL;
1075
1076 f->gpu = gpu;
1077
f54d1867
CW		 1078 dma_fence_init(&f->base, &etnaviv_fence_ops, &gpu->fence_spinlock,
1079 gpu->fence_context, ++gpu->next_fence);
a8c21a54
T		 1080
1081 return &f->base;
1082}
1083
1084int etnaviv_gpu_fence_sync_obj(struct etnaviv_gem_object *etnaviv_obj,
9ad59fea 1085 unsigned int context, bool exclusive, bool explicit)
a8c21a54
T		 1086{
1087 struct reservation_object *robj = etnaviv_obj->resv;
1088 struct reservation_object_list *fobj;
f54d1867 1089 struct dma_fence *fence;
a8c21a54
T		 1090 int i, ret;
1091
1092 if (!exclusive) {
1093 ret = reservation_object_reserve_shared(robj);
1094 if (ret)
1095 return ret;
1096 }
1097
9ad59fea
PZ		 1098 if (explicit)
1099 return 0;
1100
a8c21a54
T		 1101 /*
1102 * If we have any shared fences, then the exclusive fence
1103 * should be ignored as it will already have been signalled.
1104 */
1105 fobj = reservation_object_get_list(robj);
1106 if (!fobj || fobj->shared_count == 0) {
1107 /* Wait on any existing exclusive fence which isn't our own */
1108 fence = reservation_object_get_excl(robj);
1109 if (fence && fence->context != context) {
f54d1867 1110 ret = dma_fence_wait(fence, true);
a8c21a54
T		 1111 if (ret)
1112 return ret;
1113 }
1114 }
1115
1116 if (!exclusive || !fobj)
1117 return 0;
1118
1119 for (i = 0; i < fobj->shared_count; i++) {
1120 fence = rcu_dereference_protected(fobj->shared[i],
1121 reservation_object_held(robj));
1122 if (fence->context != context) {
f54d1867 1123 ret = dma_fence_wait(fence, true);
a8c21a54
T		 1124 if (ret)
1125 return ret;
1126 }
1127 }
1128
1129 return 0;
1130}
1131
1132/*
1133 * event management:
1134 */
1135
95a428c1
CG		 1136static int event_alloc(struct etnaviv_gpu *gpu, unsigned nr_events,
1137 unsigned int *events)
a8c21a54 1138{
95a428c1
CG		 1139 unsigned long flags, timeout = msecs_to_jiffies(10 * 10000);
1140 unsigned i, acquired = 0;
a8c21a54 1141
95a428c1
CG		 1142 for (i = 0; i < nr_events; i++) {
1143 unsigned long ret;
a8c21a54 1144
95a428c1 1145 ret = wait_for_completion_timeout(&gpu->event_free, timeout);
a8c21a54 1146
95a428c1
CG		 1147 if (!ret) {
1148 dev_err(gpu->dev, "wait_for_completion_timeout failed");
1149 goto out;
a8c21a54 1150 }
95a428c1
CG		 1151
1152 acquired++;
1153 timeout = ret;
1154 }
a8c21a54
T		 1155
1156 spin_lock_irqsave(&gpu->event_spinlock, flags);
1157
95a428c1
CG		 1158 for (i = 0; i < nr_events; i++) {
1159 int event = find_first_zero_bit(gpu->event_bitmap, ETNA_NR_EVENTS);
1160
1161 events[i] = event;
547d340d 1162 memset(&gpu->event[event], 0, sizeof(struct etnaviv_event));
355502e0 1163 set_bit(event, gpu->event_bitmap);
a8c21a54
T		 1164 }
1165
1166 spin_unlock_irqrestore(&gpu->event_spinlock, flags);
1167
95a428c1
CG		 1168 return 0;
1169
1170out:
1171 for (i = 0; i < acquired; i++)
1172 complete(&gpu->event_free);
1173
1174 return -EBUSY;
a8c21a54
T		 1175}
1176
1177static void event_free(struct etnaviv_gpu *gpu, unsigned int event)
1178{
1179 unsigned long flags;
1180
1181 spin_lock_irqsave(&gpu->event_spinlock, flags);
1182
355502e0 1183 if (!test_bit(event, gpu->event_bitmap)) {
a8c21a54
T		 1184 dev_warn(gpu->dev, "event %u is already marked as free",
1185 event);
1186 spin_unlock_irqrestore(&gpu->event_spinlock, flags);
1187 } else {
355502e0 1188 clear_bit(event, gpu->event_bitmap);
a8c21a54
T		 1189 spin_unlock_irqrestore(&gpu->event_spinlock, flags);
1190
1191 complete(&gpu->event_free);
1192 }
1193}
1194
1195/*
1196 * Cmdstream submission/retirement:
1197 */
1198
a8c21a54
T		 1199static void retire_worker(struct work_struct *work)
1200{
1201 struct etnaviv_gpu *gpu = container_of(work, struct etnaviv_gpu,
1202 retire_work);
1203 u32 fence = gpu->completed_fence;
1204 struct etnaviv_cmdbuf *cmdbuf, *tmp;
1205 unsigned int i;
1206
1207 mutex_lock(&gpu->lock);
1208 list_for_each_entry_safe(cmdbuf, tmp, &gpu->active_cmd_list, node) {
f54d1867 1209 if (!dma_fence_is_signaled(cmdbuf->fence))
a8c21a54
T		 1210 break;
1211
1212 list_del(&cmdbuf->node);
f54d1867 1213 dma_fence_put(cmdbuf->fence);
a8c21a54
T		 1214
1215 for (i = 0; i < cmdbuf->nr_bos; i++) {
b6325f40
RK		 1216 struct etnaviv_vram_mapping *mapping = cmdbuf->bo_map[i];
1217 struct etnaviv_gem_object *etnaviv_obj = mapping->object;
a8c21a54
T		 1218
1219 atomic_dec(&etnaviv_obj->gpu_active);
1220 /* drop the refcount taken in etnaviv_gpu_submit */
b6325f40 1221 etnaviv_gem_mapping_unreference(mapping);
a8c21a54
T		 1222 }
1223
ea1f5729 1224 etnaviv_cmdbuf_free(cmdbuf);
d9fd0c7d
LS		 1225 /*
1226 * We need to balance the runtime PM count caused by
1227 * each submission. Upon submission, we increment
1228 * the runtime PM counter, and allocate one event.
1229 * So here, we put the runtime PM count for each
1230 * completed event.
1231 */
1232 pm_runtime_put_autosuspend(gpu->dev);
a8c21a54
T		 1233 }
1234
1235 gpu->retired_fence = fence;
1236
1237 mutex_unlock(&gpu->lock);
1238
1239 wake_up_all(&gpu->fence_event);
1240}
1241
1242int etnaviv_gpu_wait_fence_interruptible(struct etnaviv_gpu *gpu,
1243 u32 fence, struct timespec *timeout)
1244{
1245 int ret;
1246
1247 if (fence_after(fence, gpu->next_fence)) {
1248 DRM_ERROR("waiting on invalid fence: %u (of %u)\n",
1249 fence, gpu->next_fence);
1250 return -EINVAL;
1251 }
1252
1253 if (!timeout) {
1254 /* No timeout was requested: just test for completion */
1255 ret = fence_completed(gpu, fence) ? 0 : -EBUSY;
1256 } else {
1257 unsigned long remaining = etnaviv_timeout_to_jiffies(timeout);
1258
1259 ret = wait_event_interruptible_timeout(gpu->fence_event,
1260 fence_completed(gpu, fence),
1261 remaining);
1262 if (ret == 0) {
1263 DBG("timeout waiting for fence: %u (retired: %u completed: %u)",
1264 fence, gpu->retired_fence,
1265 gpu->completed_fence);
1266 ret = -ETIMEDOUT;
1267 } else if (ret != -ERESTARTSYS) {
1268 ret = 0;
1269 }
1270 }
1271
1272 return ret;
1273}
1274
1275/*
1276 * Wait for an object to become inactive. This, on it's own, is not race
1277 * free: the object is moved by the retire worker off the active list, and
1278 * then the iova is put. Moreover, the object could be re-submitted just
1279 * after we notice that it's become inactive.
1280 *
1281 * Although the retirement happens under the gpu lock, we don't want to hold
1282 * that lock in this function while waiting.
1283 */
1284int etnaviv_gpu_wait_obj_inactive(struct etnaviv_gpu *gpu,
1285 struct etnaviv_gem_object *etnaviv_obj, struct timespec *timeout)
1286{
1287 unsigned long remaining;
1288 long ret;
1289
1290 if (!timeout)
1291 return !is_active(etnaviv_obj) ? 0 : -EBUSY;
1292
1293 remaining = etnaviv_timeout_to_jiffies(timeout);
1294
1295 ret = wait_event_interruptible_timeout(gpu->fence_event,
1296 !is_active(etnaviv_obj),
1297 remaining);
fa67ac84 1298 if (ret > 0)
a8c21a54 1299 return 0;
fa67ac84 1300 else if (ret == -ERESTARTSYS)
a8c21a54 1301 return -ERESTARTSYS;
fa67ac84 1302 else
a8c21a54 1303 return -ETIMEDOUT;
a8c21a54
T		 1304}
1305
1306int etnaviv_gpu_pm_get_sync(struct etnaviv_gpu *gpu)
1307{
1308 return pm_runtime_get_sync(gpu->dev);
1309}
1310
1311void etnaviv_gpu_pm_put(struct etnaviv_gpu *gpu)
1312{
1313 pm_runtime_mark_last_busy(gpu->dev);
1314 pm_runtime_put_autosuspend(gpu->dev);
1315}
1316
68dc0b29
CG		 1317static void sync_point_perfmon_sample(struct etnaviv_gpu *gpu,
1318 struct etnaviv_event *event, unsigned int flags)
1319{
1320 const struct etnaviv_cmdbuf *cmdbuf = event->cmdbuf;
1321 unsigned int i;
1322
1323 for (i = 0; i < cmdbuf->nr_pmrs; i++) {
1324 const struct etnaviv_perfmon_request *pmr = cmdbuf->pmrs + i;
1325
1326 if (pmr->flags == flags)
1327 etnaviv_perfmon_process(gpu, pmr);
1328 }
1329}
1330
1331static void sync_point_perfmon_sample_pre(struct etnaviv_gpu *gpu,
1332 struct etnaviv_event *event)
1333{
2c8b0c5a
CG		 1334 u32 val;
1335
1336 /* disable clock gating */
1337 val = gpu_read(gpu, VIVS_PM_POWER_CONTROLS);
1338 val &= ~VIVS_PM_POWER_CONTROLS_ENABLE_MODULE_CLOCK_GATING;
1339 gpu_write(gpu, VIVS_PM_POWER_CONTROLS, val);
1340
04a7d18d
CG		 1341 /* enable debug register */
1342 val = gpu_read(gpu, VIVS_HI_CLOCK_CONTROL);
1343 val &= ~VIVS_HI_CLOCK_CONTROL_DISABLE_DEBUG_REGISTERS;
1344 gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, val);
1345
68dc0b29
CG		 1346 sync_point_perfmon_sample(gpu, event, ETNA_PM_PROCESS_PRE);
1347}
1348
1349static void sync_point_perfmon_sample_post(struct etnaviv_gpu *gpu,
1350 struct etnaviv_event *event)
1351{
1352 const struct etnaviv_cmdbuf *cmdbuf = event->cmdbuf;
1353 unsigned int i;
2c8b0c5a 1354 u32 val;
68dc0b29
CG		 1355
1356 sync_point_perfmon_sample(gpu, event, ETNA_PM_PROCESS_POST);
1357
1358 for (i = 0; i < cmdbuf->nr_pmrs; i++) {
1359 const struct etnaviv_perfmon_request *pmr = cmdbuf->pmrs + i;
1360
1361 *pmr->bo_vma = pmr->sequence;
1362 }
2c8b0c5a 1363
04a7d18d
CG		 1364 /* disable debug register */
1365 val = gpu_read(gpu, VIVS_HI_CLOCK_CONTROL);
1366 val |= VIVS_HI_CLOCK_CONTROL_DISABLE_DEBUG_REGISTERS;
1367 gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, val);
1368
2c8b0c5a
CG		 1369 /* enable clock gating */
1370 val = gpu_read(gpu, VIVS_PM_POWER_CONTROLS);
1371 val |= VIVS_PM_POWER_CONTROLS_ENABLE_MODULE_CLOCK_GATING;
1372 gpu_write(gpu, VIVS_PM_POWER_CONTROLS, val);
68dc0b29
CG		 1373}
1374
1375
a8c21a54
T		 1376/* add bo's to gpu's ring, and kick gpu: */
1377int etnaviv_gpu_submit(struct etnaviv_gpu *gpu,
1378 struct etnaviv_gem_submit *submit, struct etnaviv_cmdbuf *cmdbuf)
1379{
f54d1867 1380 struct dma_fence *fence;
68dc0b29 1381 unsigned int i, nr_events = 1, event[3];
a8c21a54
T		 1382 int ret;
1383
1384 ret = etnaviv_gpu_pm_get_sync(gpu);
1385 if (ret < 0)
1386 return ret;
1387
68dc0b29
CG		 1388 /*
1389 * if there are performance monitor requests we need to have
1390 * - a sync point to re-configure gpu and process ETNA_PM_PROCESS_PRE
1391 * requests.
1392 * - a sync point to re-configure gpu, process ETNA_PM_PROCESS_POST requests
1393 * and update the sequence number for userspace.
1394 */
1395 if (cmdbuf->nr_pmrs)
1396 nr_events = 3;
1397
1398 ret = event_alloc(gpu, nr_events, event);
95a428c1 1399 if (ret) {
68dc0b29 1400 DRM_ERROR("no free events\n");
d9853490 1401 goto out_pm_put;
a8c21a54
T		 1402 }
1403
f3cd1b06
LS		 1404 mutex_lock(&gpu->lock);
1405
a8c21a54
T		 1406 fence = etnaviv_gpu_fence_alloc(gpu);
1407 if (!fence) {
68dc0b29
CG		 1408 for (i = 0; i < nr_events; i++)
1409 event_free(gpu, event[i]);
1410
a8c21a54 1411 ret = -ENOMEM;
45abdf35 1412 goto out_unlock;
a8c21a54
T		 1413 }
1414
68dc0b29 1415 gpu->event[event[0]].fence = fence;
6e2b98cf
LS		 1416 submit->fence = dma_fence_get(fence);
1417 gpu->active_fence = submit->fence->seqno;
a8c21a54 1418
68dc0b29
CG		 1419 if (cmdbuf->nr_pmrs) {
1420 gpu->event[event[1]].sync_point = &sync_point_perfmon_sample_pre;
1421 gpu->event[event[1]].cmdbuf = cmdbuf;
1422 etnaviv_sync_point_queue(gpu, event[1]);
1423 }
1424
1425 etnaviv_buffer_queue(gpu, event[0], cmdbuf);
1426
1427 if (cmdbuf->nr_pmrs) {
1428 gpu->event[event[2]].sync_point = &sync_point_perfmon_sample_post;
1429 gpu->event[event[2]].cmdbuf = cmdbuf;
1430 etnaviv_sync_point_queue(gpu, event[2]);
1431 }
a8c21a54
T		 1432
1433 cmdbuf->fence = fence;
1434 list_add_tail(&cmdbuf->node, &gpu->active_cmd_list);
1435
1436 /* We're committed to adding this command buffer, hold a PM reference */
1437 pm_runtime_get_noresume(gpu->dev);
1438
1439 for (i = 0; i < submit->nr_bos; i++) {
1440 struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj;
a8c21a54 1441
b6325f40
RK		 1442 /* Each cmdbuf takes a refcount on the mapping */
1443 etnaviv_gem_mapping_reference(submit->bos[i].mapping);
1444 cmdbuf->bo_map[i] = submit->bos[i].mapping;
a8c21a54
T		 1445 atomic_inc(&etnaviv_obj->gpu_active);
1446
1447 if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE)
1448 reservation_object_add_excl_fence(etnaviv_obj->resv,
1449 fence);
1450 else
1451 reservation_object_add_shared_fence(etnaviv_obj->resv,
1452 fence);
1453 }
1454 cmdbuf->nr_bos = submit->nr_bos;
1455 hangcheck_timer_reset(gpu);
1456 ret = 0;
1457
45abdf35 1458out_unlock:
a8c21a54
T		 1459 mutex_unlock(&gpu->lock);
1460
d9853490 1461out_pm_put:
a8c21a54
T		 1462 etnaviv_gpu_pm_put(gpu);
1463
1464 return ret;
1465}
1466
357713ce
CG		 1467static void sync_point_worker(struct work_struct *work)
1468{
1469 struct etnaviv_gpu *gpu = container_of(work, struct etnaviv_gpu,
1470 sync_point_work);
b9a48aa7
LS		 1471 struct etnaviv_event *event = &gpu->event[gpu->sync_point_event];
1472 u32 addr = gpu_read(gpu, VIVS_FE_DMA_ADDRESS);
357713ce 1473
b9a48aa7 1474 event->sync_point(gpu, event);
357713ce 1475 event_free(gpu, gpu->sync_point_event);
b9a48aa7
LS		 1476
1477 /* restart FE last to avoid GPU and IRQ racing against this worker */
1478 etnaviv_gpu_start_fe(gpu, addr + 2, 2);
357713ce
CG		 1479}
1480
a8c21a54
T		 1481/*
1482 * Init/Cleanup:
1483 */
1484static irqreturn_t irq_handler(int irq, void *data)
1485{
1486 struct etnaviv_gpu *gpu = data;
1487 irqreturn_t ret = IRQ_NONE;
1488
1489 u32 intr = gpu_read(gpu, VIVS_HI_INTR_ACKNOWLEDGE);
1490
1491 if (intr != 0) {
1492 int event;
1493
1494 pm_runtime_mark_last_busy(gpu->dev);
1495
1496 dev_dbg(gpu->dev, "intr 0x%08x\n", intr);
1497
1498 if (intr & VIVS_HI_INTR_ACKNOWLEDGE_AXI_BUS_ERROR) {
1499 dev_err(gpu->dev, "AXI bus error\n");
1500 intr &= ~VIVS_HI_INTR_ACKNOWLEDGE_AXI_BUS_ERROR;
1501 }
1502
128a9b1d
LS		 1503 if (intr & VIVS_HI_INTR_ACKNOWLEDGE_MMU_EXCEPTION) {
1504 int i;
1505
1506 dev_err_ratelimited(gpu->dev,
1507 "MMU fault status 0x%08x\n",
1508 gpu_read(gpu, VIVS_MMUv2_STATUS));
1509 for (i = 0; i < 4; i++) {
1510 dev_err_ratelimited(gpu->dev,
1511 "MMU %d fault addr 0x%08x\n",
1512 i, gpu_read(gpu,
1513 VIVS_MMUv2_EXCEPTION_ADDR(i)));
1514 }
1515 intr &= ~VIVS_HI_INTR_ACKNOWLEDGE_MMU_EXCEPTION;
1516 }
1517
a8c21a54 1518 while ((event = ffs(intr)) != 0) {
f54d1867 1519 struct dma_fence *fence;
a8c21a54
T		 1520
1521 event -= 1;
1522
1523 intr &= ~(1 << event);
1524
1525 dev_dbg(gpu->dev, "event %u\n", event);
1526
357713ce
CG		 1527 if (gpu->event[event].sync_point) {
1528 gpu->sync_point_event = event;
a7790d78 1529 queue_work(gpu->wq, &gpu->sync_point_work);
357713ce
CG		 1530 }
1531
a8c21a54 1532 fence = gpu->event[event].fence;
68dc0b29
CG		 1533 if (!fence)
1534 continue;
1535
a8c21a54 1536 gpu->event[event].fence = NULL;
f54d1867 1537 dma_fence_signal(fence);
a8c21a54
T		 1538
1539 /*
1540 * Events can be processed out of order. Eg,
1541 * - allocate and queue event 0
1542 * - allocate event 1
1543 * - event 0 completes, we process it
1544 * - allocate and queue event 0
1545 * - event 1 and event 0 complete
1546 * we can end up processing event 0 first, then 1.
1547 */
1548 if (fence_after(fence->seqno, gpu->completed_fence))
1549 gpu->completed_fence = fence->seqno;
1550
1551 event_free(gpu, event);
a8c21a54
T		 1552 }
1553
1554 /* Retire the buffer objects in a work */
a7790d78 1555 queue_work(gpu->wq, &gpu->retire_work);
a8c21a54
T		 1556
1557 ret = IRQ_HANDLED;
1558 }
1559
1560 return ret;
1561}
1562
1563static int etnaviv_gpu_clk_enable(struct etnaviv_gpu *gpu)
1564{
1565 int ret;
1566
9c7310c0
LS		 1567 if (gpu->clk_bus) {
1568 ret = clk_prepare_enable(gpu->clk_bus);
1569 if (ret)
1570 return ret;
1571 }
a8c21a54 1572
9c7310c0
LS		 1573 if (gpu->clk_core) {
1574 ret = clk_prepare_enable(gpu->clk_core);
1575 if (ret)
1576 goto disable_clk_bus;
1577 }
1578
1579 if (gpu->clk_shader) {
1580 ret = clk_prepare_enable(gpu->clk_shader);
1581 if (ret)
1582 goto disable_clk_core;
a8c21a54
T		 1583 }
1584
1585 return 0;
9c7310c0
LS		 1586
1587disable_clk_core:
1588 if (gpu->clk_core)
1589 clk_disable_unprepare(gpu->clk_core);
1590disable_clk_bus:
1591 if (gpu->clk_bus)
1592 clk_disable_unprepare(gpu->clk_bus);
1593
1594 return ret;
a8c21a54
T		 1595}
1596
1597static int etnaviv_gpu_clk_disable(struct etnaviv_gpu *gpu)
1598{
9c7310c0
LS		 1599 if (gpu->clk_shader)
1600 clk_disable_unprepare(gpu->clk_shader);
1601 if (gpu->clk_core)
1602 clk_disable_unprepare(gpu->clk_core);
1603 if (gpu->clk_bus)
1604 clk_disable_unprepare(gpu->clk_bus);
a8c21a54
T		 1605
1606 return 0;
1607}
1608
b88163e3
LS		 1609int etnaviv_gpu_wait_idle(struct etnaviv_gpu *gpu, unsigned int timeout_ms)
1610{
1611 unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms);
1612
1613 do {
1614 u32 idle = gpu_read(gpu, VIVS_HI_IDLE_STATE);
1615
1616 if ((idle & gpu->idle_mask) == gpu->idle_mask)
1617 return 0;
1618
1619 if (time_is_before_jiffies(timeout)) {
1620 dev_warn(gpu->dev,
1621 "timed out waiting for idle: idle=0x%x\n",
1622 idle);
1623 return -ETIMEDOUT;
1624 }
1625
1626 udelay(5);
1627 } while (1);
1628}
1629
a8c21a54
T		 1630static int etnaviv_gpu_hw_suspend(struct etnaviv_gpu *gpu)
1631{
1632 if (gpu->buffer) {
a8c21a54
T		 1633 /* Replace the last WAIT with END */
1634 etnaviv_buffer_end(gpu);
1635
1636 /*
1637 * We know that only the FE is busy here, this should
1638 * happen quickly (as the WAIT is only 200 cycles). If
1639 * we fail, just warn and continue.
1640 */
b88163e3 1641 etnaviv_gpu_wait_idle(gpu, 100);
a8c21a54
T		 1642 }
1643
1644 return etnaviv_gpu_clk_disable(gpu);
1645}
1646
1647#ifdef CONFIG_PM
1648static int etnaviv_gpu_hw_resume(struct etnaviv_gpu *gpu)
1649{
a8c21a54
T		 1650 int ret;
1651
1652 ret = mutex_lock_killable(&gpu->lock);
1653 if (ret)
1654 return ret;
1655
bcdfb5e5 1656 etnaviv_gpu_update_clock(gpu);
a8c21a54
T		 1657 etnaviv_gpu_hw_init(gpu);
1658
4375ffff 1659 gpu->lastctx = NULL;
f6086311 1660 gpu->exec_state = -1;
a8c21a54
T		 1661
1662 mutex_unlock(&gpu->lock);
1663
1664 return 0;
1665}
1666#endif
1667
bcdfb5e5
RK		 1668static int
1669etnaviv_gpu_cooling_get_max_state(struct thermal_cooling_device *cdev,
1670 unsigned long *state)
1671{
1672 *state = 6;
1673
1674 return 0;
1675}
1676
1677static int
1678etnaviv_gpu_cooling_get_cur_state(struct thermal_cooling_device *cdev,
1679 unsigned long *state)
1680{
1681 struct etnaviv_gpu *gpu = cdev->devdata;
1682
1683 *state = gpu->freq_scale;
1684
1685 return 0;
1686}
1687
1688static int
1689etnaviv_gpu_cooling_set_cur_state(struct thermal_cooling_device *cdev,
1690 unsigned long state)
1691{
1692 struct etnaviv_gpu *gpu = cdev->devdata;
1693
1694 mutex_lock(&gpu->lock);
1695 gpu->freq_scale = state;
1696 if (!pm_runtime_suspended(gpu->dev))
1697 etnaviv_gpu_update_clock(gpu);
1698 mutex_unlock(&gpu->lock);
1699
1700 return 0;
1701}
1702
1703static struct thermal_cooling_device_ops cooling_ops = {
1704 .get_max_state = etnaviv_gpu_cooling_get_max_state,
1705 .get_cur_state = etnaviv_gpu_cooling_get_cur_state,
1706 .set_cur_state = etnaviv_gpu_cooling_set_cur_state,
1707};
1708
a8c21a54
T		 1709static int etnaviv_gpu_bind(struct device *dev, struct device *master,
1710 void *data)
1711{
1712 struct drm_device *drm = data;
1713 struct etnaviv_drm_private *priv = drm->dev_private;
1714 struct etnaviv_gpu *gpu = dev_get_drvdata(dev);
1715 int ret;
1716
49b82c38 1717 if (IS_ENABLED(CONFIG_DRM_ETNAVIV_THERMAL)) {
5247e2aa 1718 gpu->cooling = thermal_of_cooling_device_register(dev->of_node,
bcdfb5e5 1719 (char *)dev_name(dev), gpu, &cooling_ops);
5247e2aa
LS		 1720 if (IS_ERR(gpu->cooling))
1721 return PTR_ERR(gpu->cooling);
1722 }
bcdfb5e5 1723
a7790d78
LS		 1724 gpu->wq = alloc_ordered_workqueue(dev_name(dev), 0);
1725 if (!gpu->wq) {
1726 if (IS_ENABLED(CONFIG_DRM_ETNAVIV_THERMAL))
1727 thermal_cooling_device_unregister(gpu->cooling);
1728 return -ENOMEM;
1729 }
1730
a8c21a54
T		 1731#ifdef CONFIG_PM
1732 ret = pm_runtime_get_sync(gpu->dev);
1733#else
1734 ret = etnaviv_gpu_clk_enable(gpu);
1735#endif
bcdfb5e5 1736 if (ret < 0) {
a7790d78 1737 destroy_workqueue(gpu->wq);
49b82c38
PZ		 1738 if (IS_ENABLED(CONFIG_DRM_ETNAVIV_THERMAL))
1739 thermal_cooling_device_unregister(gpu->cooling);
a8c21a54 1740 return ret;
bcdfb5e5 1741 }
a8c21a54
T		 1742
1743 gpu->drm = drm;
f54d1867 1744 gpu->fence_context = dma_fence_context_alloc(1);
a8c21a54
T		 1745 spin_lock_init(&gpu->fence_spinlock);
1746
1747 INIT_LIST_HEAD(&gpu->active_cmd_list);
1748 INIT_WORK(&gpu->retire_work, retire_worker);
357713ce 1749 INIT_WORK(&gpu->sync_point_work, sync_point_worker);
a8c21a54
T		 1750 INIT_WORK(&gpu->recover_work, recover_worker);
1751 init_waitqueue_head(&gpu->fence_event);
1752
43b70524 1753 timer_setup(&gpu->hangcheck_timer, hangcheck_handler, TIMER_DEFERRABLE);
a8c21a54
T		 1754
1755 priv->gpu[priv->num_gpus++] = gpu;
1756
1757 pm_runtime_mark_last_busy(gpu->dev);
1758 pm_runtime_put_autosuspend(gpu->dev);
1759
1760 return 0;
1761}
1762
1763static void etnaviv_gpu_unbind(struct device *dev, struct device *master,
1764 void *data)
1765{
1766 struct etnaviv_gpu *gpu = dev_get_drvdata(dev);
1767
1768 DBG("%s", dev_name(gpu->dev));
1769
1770 hangcheck_disable(gpu);
1771
a7790d78
LS		 1772 flush_workqueue(gpu->wq);
1773 destroy_workqueue(gpu->wq);
1774
a8c21a54
T		 1775#ifdef CONFIG_PM
1776 pm_runtime_get_sync(gpu->dev);
1777 pm_runtime_put_sync_suspend(gpu->dev);
1778#else
1779 etnaviv_gpu_hw_suspend(gpu);
1780#endif
1781
1782 if (gpu->buffer) {
ea1f5729 1783 etnaviv_cmdbuf_free(gpu->buffer);
a8c21a54
T		 1784 gpu->buffer = NULL;
1785 }
1786
e66774dd
LS		 1787 if (gpu->cmdbuf_suballoc) {
1788 etnaviv_cmdbuf_suballoc_destroy(gpu->cmdbuf_suballoc);
1789 gpu->cmdbuf_suballoc = NULL;
1790 }
1791
a8c21a54
T		 1792 if (gpu->mmu) {
1793 etnaviv_iommu_destroy(gpu->mmu);
1794 gpu->mmu = NULL;
1795 }
1796
1797 gpu->drm = NULL;
bcdfb5e5 1798
49b82c38
PZ		 1799 if (IS_ENABLED(CONFIG_DRM_ETNAVIV_THERMAL))
1800 thermal_cooling_device_unregister(gpu->cooling);
bcdfb5e5 1801 gpu->cooling = NULL;
a8c21a54
T		 1802}
1803
1804static const struct component_ops gpu_ops = {
1805 .bind = etnaviv_gpu_bind,
1806 .unbind = etnaviv_gpu_unbind,
1807};
1808
1809static const struct of_device_id etnaviv_gpu_match[] = {
1810 {
1811 .compatible = "vivante,gc"
1812 },
1813 { /* sentinel */ }
1814};
1815
1816static int etnaviv_gpu_platform_probe(struct platform_device *pdev)
1817{
1818 struct device *dev = &pdev->dev;
1819 struct etnaviv_gpu *gpu;
dc227890 1820 int err;
a8c21a54
T		 1821
1822 gpu = devm_kzalloc(dev, sizeof(*gpu), GFP_KERNEL);
1823 if (!gpu)
1824 return -ENOMEM;
1825
1826 gpu->dev = &pdev->dev;
1827 mutex_init(&gpu->lock);
1828
a8c21a54
T		 1829 /* Map registers: */
1830 gpu->mmio = etnaviv_ioremap(pdev, NULL, dev_name(gpu->dev));
1831 if (IS_ERR(gpu->mmio))
1832 return PTR_ERR(gpu->mmio);
1833
1834 /* Get Interrupt: */
1835 gpu->irq = platform_get_irq(pdev, 0);
1836 if (gpu->irq < 0) {
db60eda3
FE		 1837 dev_err(dev, "failed to get irq: %d\n", gpu->irq);
1838 return gpu->irq;
a8c21a54
T		 1839 }
1840
1841 err = devm_request_irq(&pdev->dev, gpu->irq, irq_handler, 0,
1842 dev_name(gpu->dev), gpu);
1843 if (err) {
1844 dev_err(dev, "failed to request IRQ%u: %d\n", gpu->irq, err);
db60eda3 1845 return err;
a8c21a54
T		 1846 }
1847
1848 /* Get Clocks: */
1849 gpu->clk_bus = devm_clk_get(&pdev->dev, "bus");
1850 DBG("clk_bus: %p", gpu->clk_bus);
1851 if (IS_ERR(gpu->clk_bus))
1852 gpu->clk_bus = NULL;
1853
1854 gpu->clk_core = devm_clk_get(&pdev->dev, "core");
1855 DBG("clk_core: %p", gpu->clk_core);
1856 if (IS_ERR(gpu->clk_core))
1857 gpu->clk_core = NULL;
d79fd1cc 1858 gpu->base_rate_core = clk_get_rate(gpu->clk_core);
a8c21a54
T		 1859
1860 gpu->clk_shader = devm_clk_get(&pdev->dev, "shader");
1861 DBG("clk_shader: %p", gpu->clk_shader);
1862 if (IS_ERR(gpu->clk_shader))
1863 gpu->clk_shader = NULL;
d79fd1cc 1864 gpu->base_rate_shader = clk_get_rate(gpu->clk_shader);
a8c21a54
T		 1865
1866 /* TODO: figure out max mapped size */
1867 dev_set_drvdata(dev, gpu);
1868
1869 /*
1870 * We treat the device as initially suspended. The runtime PM
1871 * autosuspend delay is rather arbitary: no measurements have
1872 * yet been performed to determine an appropriate value.
1873 */
1874 pm_runtime_use_autosuspend(gpu->dev);
1875 pm_runtime_set_autosuspend_delay(gpu->dev, 200);
1876 pm_runtime_enable(gpu->dev);
1877
1878 err = component_add(&pdev->dev, &gpu_ops);
1879 if (err < 0) {
1880 dev_err(&pdev->dev, "failed to register component: %d\n", err);
db60eda3 1881 return err;
a8c21a54
T		 1882 }
1883
1884 return 0;
a8c21a54
T		 1885}
1886
1887static int etnaviv_gpu_platform_remove(struct platform_device *pdev)
1888{
1889 component_del(&pdev->dev, &gpu_ops);
1890 pm_runtime_disable(&pdev->dev);
1891 return 0;
1892}
1893
1894#ifdef CONFIG_PM
1895static int etnaviv_gpu_rpm_suspend(struct device *dev)
1896{
1897 struct etnaviv_gpu *gpu = dev_get_drvdata(dev);
1898 u32 idle, mask;
1899
1900 /* If we have outstanding fences, we're not idle */
1901 if (gpu->completed_fence != gpu->active_fence)
1902 return -EBUSY;
1903
1904 /* Check whether the hardware (except FE) is idle */
1905 mask = gpu->idle_mask & ~VIVS_HI_IDLE_STATE_FE;
1906 idle = gpu_read(gpu, VIVS_HI_IDLE_STATE) & mask;
1907 if (idle != mask)
1908 return -EBUSY;
1909
1910 return etnaviv_gpu_hw_suspend(gpu);
1911}
1912
1913static int etnaviv_gpu_rpm_resume(struct device *dev)
1914{
1915 struct etnaviv_gpu *gpu = dev_get_drvdata(dev);
1916 int ret;
1917
1918 ret = etnaviv_gpu_clk_enable(gpu);
1919 if (ret)
1920 return ret;
1921
1922 /* Re-initialise the basic hardware state */
1923 if (gpu->drm && gpu->buffer) {
1924 ret = etnaviv_gpu_hw_resume(gpu);
1925 if (ret) {
1926 etnaviv_gpu_clk_disable(gpu);
1927 return ret;
1928 }
1929 }
1930
1931 return 0;
1932}
1933#endif
1934
1935static const struct dev_pm_ops etnaviv_gpu_pm_ops = {
1936 SET_RUNTIME_PM_OPS(etnaviv_gpu_rpm_suspend, etnaviv_gpu_rpm_resume,
1937 NULL)
1938};
1939
1940struct platform_driver etnaviv_gpu_driver = {
1941 .driver = {
1942 .name = "etnaviv-gpu",
1943 .owner = THIS_MODULE,
1944 .pm = &etnaviv_gpu_pm_ops,
1945 .of_match_table = etnaviv_gpu_match,
1946 },
1947 .probe = etnaviv_gpu_platform_probe,
1948 .remove = etnaviv_gpu_platform_remove,
1949 .id_table = gpu_ids,
1950};
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git