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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 | ||
34 | static const struct platform_device_id gpu_ids[] = { | |
35 | { .name = "etnaviv-gpu,2d" }, | |
36 | { }, | |
37 | }; | |
38 | ||
39 | static bool etnaviv_dump_core = true; | |
40 | module_param_named(dump_core, etnaviv_dump_core, bool, 0600); | |
41 | ||
42 | /* | |
43 | * Driver functions: | |
44 | */ | |
45 | ||
46 | int 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 |
144 | static 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 | ||
294 | static 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 | ||
407 | static 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 |
414 | static 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 |
432 | static 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 |
511 | static 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 |
558 | void 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 |
566 | static 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 |
597 | static 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 | ||
651 | int 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 | ||
753 | free_buffer: | |
ea1f5729 | 754 | etnaviv_cmdbuf_free(gpu->buffer); |
a8c21a54 | 755 | gpu->buffer = NULL; |
45d16a6d LS |
756 | destroy_iommu: |
757 | etnaviv_iommu_destroy(gpu->mmu); | |
758 | gpu->mmu = NULL; | |
a8c21a54 T |
759 | fail: |
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 | |
767 | struct dma_debug { | |
768 | u32 address[2]; | |
769 | u32 state[2]; | |
770 | }; | |
771 | ||
772 | static 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 | ||
791 | int 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 | */ | |
919 | static 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 */ | |
961 | etnaviv_queue_work(gpu->drm, &gpu->retire_work); | |
962 | } | |
963 | ||
964 | static 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 | 971 | static 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); | |
997 | etnaviv_queue_work(gpu->drm, &gpu->recover_work); | |
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 | ||
1005 | static 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 */ | |
1012 | struct etnaviv_fence { | |
1013 | struct etnaviv_gpu *gpu; | |
f54d1867 | 1014 | struct dma_fence base; |
a8c21a54 T |
1015 | }; |
1016 | ||
f54d1867 | 1017 | static 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 | 1022 | static const char *etnaviv_fence_get_driver_name(struct dma_fence *fence) |
a8c21a54 T |
1023 | { |
1024 | return "etnaviv"; | |
1025 | } | |
1026 | ||
f54d1867 | 1027 | static 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 | 1034 | static bool etnaviv_fence_enable_signaling(struct dma_fence *fence) |
a8c21a54 T |
1035 | { |
1036 | return true; | |
1037 | } | |
1038 | ||
f54d1867 | 1039 | static 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 | 1046 | static 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 | 1053 | static 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 | 1062 | static 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 | ||
1084 | int 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 |
1136 | static 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 | ||
1170 | out: | |
1171 | for (i = 0; i < acquired; i++) | |
1172 | complete(&gpu->event_free); | |
1173 | ||
1174 | return -EBUSY; | |
a8c21a54 T |
1175 | } |
1176 | ||
1177 | static 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 |
1199 | static 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 | ||
1242 | int 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 | */ | |
1284 | int 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); | |
1298 | if (ret > 0) { | |
1299 | struct etnaviv_drm_private *priv = gpu->drm->dev_private; | |
1300 | ||
1301 | /* Synchronise with the retire worker */ | |
1302 | flush_workqueue(priv->wq); | |
1303 | return 0; | |
1304 | } else if (ret == -ERESTARTSYS) { | |
1305 | return -ERESTARTSYS; | |
1306 | } else { | |
1307 | return -ETIMEDOUT; | |
1308 | } | |
1309 | } | |
1310 | ||
1311 | int etnaviv_gpu_pm_get_sync(struct etnaviv_gpu *gpu) | |
1312 | { | |
1313 | return pm_runtime_get_sync(gpu->dev); | |
1314 | } | |
1315 | ||
1316 | void etnaviv_gpu_pm_put(struct etnaviv_gpu *gpu) | |
1317 | { | |
1318 | pm_runtime_mark_last_busy(gpu->dev); | |
1319 | pm_runtime_put_autosuspend(gpu->dev); | |
1320 | } | |
1321 | ||
68dc0b29 CG |
1322 | static void sync_point_perfmon_sample(struct etnaviv_gpu *gpu, |
1323 | struct etnaviv_event *event, unsigned int flags) | |
1324 | { | |
1325 | const struct etnaviv_cmdbuf *cmdbuf = event->cmdbuf; | |
1326 | unsigned int i; | |
1327 | ||
1328 | for (i = 0; i < cmdbuf->nr_pmrs; i++) { | |
1329 | const struct etnaviv_perfmon_request *pmr = cmdbuf->pmrs + i; | |
1330 | ||
1331 | if (pmr->flags == flags) | |
1332 | etnaviv_perfmon_process(gpu, pmr); | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | static void sync_point_perfmon_sample_pre(struct etnaviv_gpu *gpu, | |
1337 | struct etnaviv_event *event) | |
1338 | { | |
2c8b0c5a CG |
1339 | u32 val; |
1340 | ||
1341 | /* disable clock gating */ | |
1342 | val = gpu_read(gpu, VIVS_PM_POWER_CONTROLS); | |
1343 | val &= ~VIVS_PM_POWER_CONTROLS_ENABLE_MODULE_CLOCK_GATING; | |
1344 | gpu_write(gpu, VIVS_PM_POWER_CONTROLS, val); | |
1345 | ||
04a7d18d CG |
1346 | /* enable debug register */ |
1347 | val = gpu_read(gpu, VIVS_HI_CLOCK_CONTROL); | |
1348 | val &= ~VIVS_HI_CLOCK_CONTROL_DISABLE_DEBUG_REGISTERS; | |
1349 | gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, val); | |
1350 | ||
68dc0b29 CG |
1351 | sync_point_perfmon_sample(gpu, event, ETNA_PM_PROCESS_PRE); |
1352 | } | |
1353 | ||
1354 | static void sync_point_perfmon_sample_post(struct etnaviv_gpu *gpu, | |
1355 | struct etnaviv_event *event) | |
1356 | { | |
1357 | const struct etnaviv_cmdbuf *cmdbuf = event->cmdbuf; | |
1358 | unsigned int i; | |
2c8b0c5a | 1359 | u32 val; |
68dc0b29 CG |
1360 | |
1361 | sync_point_perfmon_sample(gpu, event, ETNA_PM_PROCESS_POST); | |
1362 | ||
1363 | for (i = 0; i < cmdbuf->nr_pmrs; i++) { | |
1364 | const struct etnaviv_perfmon_request *pmr = cmdbuf->pmrs + i; | |
1365 | ||
1366 | *pmr->bo_vma = pmr->sequence; | |
1367 | } | |
2c8b0c5a | 1368 | |
04a7d18d CG |
1369 | /* disable debug register */ |
1370 | val = gpu_read(gpu, VIVS_HI_CLOCK_CONTROL); | |
1371 | val |= VIVS_HI_CLOCK_CONTROL_DISABLE_DEBUG_REGISTERS; | |
1372 | gpu_write(gpu, VIVS_HI_CLOCK_CONTROL, val); | |
1373 | ||
2c8b0c5a CG |
1374 | /* enable clock gating */ |
1375 | val = gpu_read(gpu, VIVS_PM_POWER_CONTROLS); | |
1376 | val |= VIVS_PM_POWER_CONTROLS_ENABLE_MODULE_CLOCK_GATING; | |
1377 | gpu_write(gpu, VIVS_PM_POWER_CONTROLS, val); | |
68dc0b29 CG |
1378 | } |
1379 | ||
1380 | ||
a8c21a54 T |
1381 | /* add bo's to gpu's ring, and kick gpu: */ |
1382 | int etnaviv_gpu_submit(struct etnaviv_gpu *gpu, | |
1383 | struct etnaviv_gem_submit *submit, struct etnaviv_cmdbuf *cmdbuf) | |
1384 | { | |
f54d1867 | 1385 | struct dma_fence *fence; |
68dc0b29 | 1386 | unsigned int i, nr_events = 1, event[3]; |
a8c21a54 T |
1387 | int ret; |
1388 | ||
1389 | ret = etnaviv_gpu_pm_get_sync(gpu); | |
1390 | if (ret < 0) | |
1391 | return ret; | |
1392 | ||
a8c21a54 T |
1393 | /* |
1394 | * TODO | |
1395 | * | |
1396 | * - flush | |
1397 | * - data endian | |
1398 | * - prefetch | |
1399 | * | |
1400 | */ | |
1401 | ||
68dc0b29 CG |
1402 | /* |
1403 | * if there are performance monitor requests we need to have | |
1404 | * - a sync point to re-configure gpu and process ETNA_PM_PROCESS_PRE | |
1405 | * requests. | |
1406 | * - a sync point to re-configure gpu, process ETNA_PM_PROCESS_POST requests | |
1407 | * and update the sequence number for userspace. | |
1408 | */ | |
1409 | if (cmdbuf->nr_pmrs) | |
1410 | nr_events = 3; | |
1411 | ||
1412 | ret = event_alloc(gpu, nr_events, event); | |
95a428c1 | 1413 | if (ret) { |
68dc0b29 | 1414 | DRM_ERROR("no free events\n"); |
d9853490 | 1415 | goto out_pm_put; |
a8c21a54 T |
1416 | } |
1417 | ||
f3cd1b06 LS |
1418 | mutex_lock(&gpu->lock); |
1419 | ||
a8c21a54 T |
1420 | fence = etnaviv_gpu_fence_alloc(gpu); |
1421 | if (!fence) { | |
68dc0b29 CG |
1422 | for (i = 0; i < nr_events; i++) |
1423 | event_free(gpu, event[i]); | |
1424 | ||
a8c21a54 | 1425 | ret = -ENOMEM; |
45abdf35 | 1426 | goto out_unlock; |
a8c21a54 T |
1427 | } |
1428 | ||
68dc0b29 | 1429 | gpu->event[event[0]].fence = fence; |
6e2b98cf LS |
1430 | submit->fence = dma_fence_get(fence); |
1431 | gpu->active_fence = submit->fence->seqno; | |
a8c21a54 T |
1432 | |
1433 | if (gpu->lastctx != cmdbuf->ctx) { | |
1434 | gpu->mmu->need_flush = true; | |
1435 | gpu->switch_context = true; | |
1436 | gpu->lastctx = cmdbuf->ctx; | |
1437 | } | |
1438 | ||
68dc0b29 CG |
1439 | if (cmdbuf->nr_pmrs) { |
1440 | gpu->event[event[1]].sync_point = &sync_point_perfmon_sample_pre; | |
1441 | gpu->event[event[1]].cmdbuf = cmdbuf; | |
1442 | etnaviv_sync_point_queue(gpu, event[1]); | |
1443 | } | |
1444 | ||
1445 | etnaviv_buffer_queue(gpu, event[0], cmdbuf); | |
1446 | ||
1447 | if (cmdbuf->nr_pmrs) { | |
1448 | gpu->event[event[2]].sync_point = &sync_point_perfmon_sample_post; | |
1449 | gpu->event[event[2]].cmdbuf = cmdbuf; | |
1450 | etnaviv_sync_point_queue(gpu, event[2]); | |
1451 | } | |
a8c21a54 T |
1452 | |
1453 | cmdbuf->fence = fence; | |
1454 | list_add_tail(&cmdbuf->node, &gpu->active_cmd_list); | |
1455 | ||
1456 | /* We're committed to adding this command buffer, hold a PM reference */ | |
1457 | pm_runtime_get_noresume(gpu->dev); | |
1458 | ||
1459 | for (i = 0; i < submit->nr_bos; i++) { | |
1460 | struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj; | |
a8c21a54 | 1461 | |
b6325f40 RK |
1462 | /* Each cmdbuf takes a refcount on the mapping */ |
1463 | etnaviv_gem_mapping_reference(submit->bos[i].mapping); | |
1464 | cmdbuf->bo_map[i] = submit->bos[i].mapping; | |
a8c21a54 T |
1465 | atomic_inc(&etnaviv_obj->gpu_active); |
1466 | ||
1467 | if (submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE) | |
1468 | reservation_object_add_excl_fence(etnaviv_obj->resv, | |
1469 | fence); | |
1470 | else | |
1471 | reservation_object_add_shared_fence(etnaviv_obj->resv, | |
1472 | fence); | |
1473 | } | |
1474 | cmdbuf->nr_bos = submit->nr_bos; | |
1475 | hangcheck_timer_reset(gpu); | |
1476 | ret = 0; | |
1477 | ||
45abdf35 | 1478 | out_unlock: |
a8c21a54 T |
1479 | mutex_unlock(&gpu->lock); |
1480 | ||
d9853490 | 1481 | out_pm_put: |
a8c21a54 T |
1482 | etnaviv_gpu_pm_put(gpu); |
1483 | ||
1484 | return ret; | |
1485 | } | |
1486 | ||
357713ce CG |
1487 | static void etnaviv_process_sync_point(struct etnaviv_gpu *gpu, |
1488 | struct etnaviv_event *event) | |
1489 | { | |
1490 | u32 addr = gpu_read(gpu, VIVS_FE_DMA_ADDRESS); | |
1491 | ||
1492 | event->sync_point(gpu, event); | |
1493 | etnaviv_gpu_start_fe(gpu, addr + 2, 2); | |
1494 | } | |
1495 | ||
1496 | static void sync_point_worker(struct work_struct *work) | |
1497 | { | |
1498 | struct etnaviv_gpu *gpu = container_of(work, struct etnaviv_gpu, | |
1499 | sync_point_work); | |
1500 | ||
1501 | etnaviv_process_sync_point(gpu, &gpu->event[gpu->sync_point_event]); | |
1502 | event_free(gpu, gpu->sync_point_event); | |
1503 | } | |
1504 | ||
a8c21a54 T |
1505 | /* |
1506 | * Init/Cleanup: | |
1507 | */ | |
1508 | static irqreturn_t irq_handler(int irq, void *data) | |
1509 | { | |
1510 | struct etnaviv_gpu *gpu = data; | |
1511 | irqreturn_t ret = IRQ_NONE; | |
1512 | ||
1513 | u32 intr = gpu_read(gpu, VIVS_HI_INTR_ACKNOWLEDGE); | |
1514 | ||
1515 | if (intr != 0) { | |
1516 | int event; | |
1517 | ||
1518 | pm_runtime_mark_last_busy(gpu->dev); | |
1519 | ||
1520 | dev_dbg(gpu->dev, "intr 0x%08x\n", intr); | |
1521 | ||
1522 | if (intr & VIVS_HI_INTR_ACKNOWLEDGE_AXI_BUS_ERROR) { | |
1523 | dev_err(gpu->dev, "AXI bus error\n"); | |
1524 | intr &= ~VIVS_HI_INTR_ACKNOWLEDGE_AXI_BUS_ERROR; | |
1525 | } | |
1526 | ||
128a9b1d LS |
1527 | if (intr & VIVS_HI_INTR_ACKNOWLEDGE_MMU_EXCEPTION) { |
1528 | int i; | |
1529 | ||
1530 | dev_err_ratelimited(gpu->dev, | |
1531 | "MMU fault status 0x%08x\n", | |
1532 | gpu_read(gpu, VIVS_MMUv2_STATUS)); | |
1533 | for (i = 0; i < 4; i++) { | |
1534 | dev_err_ratelimited(gpu->dev, | |
1535 | "MMU %d fault addr 0x%08x\n", | |
1536 | i, gpu_read(gpu, | |
1537 | VIVS_MMUv2_EXCEPTION_ADDR(i))); | |
1538 | } | |
1539 | intr &= ~VIVS_HI_INTR_ACKNOWLEDGE_MMU_EXCEPTION; | |
1540 | } | |
1541 | ||
a8c21a54 | 1542 | while ((event = ffs(intr)) != 0) { |
f54d1867 | 1543 | struct dma_fence *fence; |
a8c21a54 T |
1544 | |
1545 | event -= 1; | |
1546 | ||
1547 | intr &= ~(1 << event); | |
1548 | ||
1549 | dev_dbg(gpu->dev, "event %u\n", event); | |
1550 | ||
357713ce CG |
1551 | if (gpu->event[event].sync_point) { |
1552 | gpu->sync_point_event = event; | |
1553 | etnaviv_queue_work(gpu->drm, &gpu->sync_point_work); | |
1554 | } | |
1555 | ||
a8c21a54 | 1556 | fence = gpu->event[event].fence; |
68dc0b29 CG |
1557 | if (!fence) |
1558 | continue; | |
1559 | ||
a8c21a54 | 1560 | gpu->event[event].fence = NULL; |
f54d1867 | 1561 | dma_fence_signal(fence); |
a8c21a54 T |
1562 | |
1563 | /* | |
1564 | * Events can be processed out of order. Eg, | |
1565 | * - allocate and queue event 0 | |
1566 | * - allocate event 1 | |
1567 | * - event 0 completes, we process it | |
1568 | * - allocate and queue event 0 | |
1569 | * - event 1 and event 0 complete | |
1570 | * we can end up processing event 0 first, then 1. | |
1571 | */ | |
1572 | if (fence_after(fence->seqno, gpu->completed_fence)) | |
1573 | gpu->completed_fence = fence->seqno; | |
1574 | ||
1575 | event_free(gpu, event); | |
a8c21a54 T |
1576 | } |
1577 | ||
1578 | /* Retire the buffer objects in a work */ | |
1579 | etnaviv_queue_work(gpu->drm, &gpu->retire_work); | |
1580 | ||
1581 | ret = IRQ_HANDLED; | |
1582 | } | |
1583 | ||
1584 | return ret; | |
1585 | } | |
1586 | ||
1587 | static int etnaviv_gpu_clk_enable(struct etnaviv_gpu *gpu) | |
1588 | { | |
1589 | int ret; | |
1590 | ||
9c7310c0 LS |
1591 | if (gpu->clk_bus) { |
1592 | ret = clk_prepare_enable(gpu->clk_bus); | |
1593 | if (ret) | |
1594 | return ret; | |
1595 | } | |
a8c21a54 | 1596 | |
9c7310c0 LS |
1597 | if (gpu->clk_core) { |
1598 | ret = clk_prepare_enable(gpu->clk_core); | |
1599 | if (ret) | |
1600 | goto disable_clk_bus; | |
1601 | } | |
1602 | ||
1603 | if (gpu->clk_shader) { | |
1604 | ret = clk_prepare_enable(gpu->clk_shader); | |
1605 | if (ret) | |
1606 | goto disable_clk_core; | |
a8c21a54 T |
1607 | } |
1608 | ||
1609 | return 0; | |
9c7310c0 LS |
1610 | |
1611 | disable_clk_core: | |
1612 | if (gpu->clk_core) | |
1613 | clk_disable_unprepare(gpu->clk_core); | |
1614 | disable_clk_bus: | |
1615 | if (gpu->clk_bus) | |
1616 | clk_disable_unprepare(gpu->clk_bus); | |
1617 | ||
1618 | return ret; | |
a8c21a54 T |
1619 | } |
1620 | ||
1621 | static int etnaviv_gpu_clk_disable(struct etnaviv_gpu *gpu) | |
1622 | { | |
9c7310c0 LS |
1623 | if (gpu->clk_shader) |
1624 | clk_disable_unprepare(gpu->clk_shader); | |
1625 | if (gpu->clk_core) | |
1626 | clk_disable_unprepare(gpu->clk_core); | |
1627 | if (gpu->clk_bus) | |
1628 | clk_disable_unprepare(gpu->clk_bus); | |
a8c21a54 T |
1629 | |
1630 | return 0; | |
1631 | } | |
1632 | ||
b88163e3 LS |
1633 | int etnaviv_gpu_wait_idle(struct etnaviv_gpu *gpu, unsigned int timeout_ms) |
1634 | { | |
1635 | unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); | |
1636 | ||
1637 | do { | |
1638 | u32 idle = gpu_read(gpu, VIVS_HI_IDLE_STATE); | |
1639 | ||
1640 | if ((idle & gpu->idle_mask) == gpu->idle_mask) | |
1641 | return 0; | |
1642 | ||
1643 | if (time_is_before_jiffies(timeout)) { | |
1644 | dev_warn(gpu->dev, | |
1645 | "timed out waiting for idle: idle=0x%x\n", | |
1646 | idle); | |
1647 | return -ETIMEDOUT; | |
1648 | } | |
1649 | ||
1650 | udelay(5); | |
1651 | } while (1); | |
1652 | } | |
1653 | ||
a8c21a54 T |
1654 | static int etnaviv_gpu_hw_suspend(struct etnaviv_gpu *gpu) |
1655 | { | |
1656 | if (gpu->buffer) { | |
a8c21a54 T |
1657 | /* Replace the last WAIT with END */ |
1658 | etnaviv_buffer_end(gpu); | |
1659 | ||
1660 | /* | |
1661 | * We know that only the FE is busy here, this should | |
1662 | * happen quickly (as the WAIT is only 200 cycles). If | |
1663 | * we fail, just warn and continue. | |
1664 | */ | |
b88163e3 | 1665 | etnaviv_gpu_wait_idle(gpu, 100); |
a8c21a54 T |
1666 | } |
1667 | ||
1668 | return etnaviv_gpu_clk_disable(gpu); | |
1669 | } | |
1670 | ||
1671 | #ifdef CONFIG_PM | |
1672 | static int etnaviv_gpu_hw_resume(struct etnaviv_gpu *gpu) | |
1673 | { | |
a8c21a54 T |
1674 | int ret; |
1675 | ||
1676 | ret = mutex_lock_killable(&gpu->lock); | |
1677 | if (ret) | |
1678 | return ret; | |
1679 | ||
bcdfb5e5 | 1680 | etnaviv_gpu_update_clock(gpu); |
a8c21a54 T |
1681 | etnaviv_gpu_hw_init(gpu); |
1682 | ||
1683 | gpu->switch_context = true; | |
f6086311 | 1684 | gpu->exec_state = -1; |
a8c21a54 T |
1685 | |
1686 | mutex_unlock(&gpu->lock); | |
1687 | ||
1688 | return 0; | |
1689 | } | |
1690 | #endif | |
1691 | ||
bcdfb5e5 RK |
1692 | static int |
1693 | etnaviv_gpu_cooling_get_max_state(struct thermal_cooling_device *cdev, | |
1694 | unsigned long *state) | |
1695 | { | |
1696 | *state = 6; | |
1697 | ||
1698 | return 0; | |
1699 | } | |
1700 | ||
1701 | static int | |
1702 | etnaviv_gpu_cooling_get_cur_state(struct thermal_cooling_device *cdev, | |
1703 | unsigned long *state) | |
1704 | { | |
1705 | struct etnaviv_gpu *gpu = cdev->devdata; | |
1706 | ||
1707 | *state = gpu->freq_scale; | |
1708 | ||
1709 | return 0; | |
1710 | } | |
1711 | ||
1712 | static int | |
1713 | etnaviv_gpu_cooling_set_cur_state(struct thermal_cooling_device *cdev, | |
1714 | unsigned long state) | |
1715 | { | |
1716 | struct etnaviv_gpu *gpu = cdev->devdata; | |
1717 | ||
1718 | mutex_lock(&gpu->lock); | |
1719 | gpu->freq_scale = state; | |
1720 | if (!pm_runtime_suspended(gpu->dev)) | |
1721 | etnaviv_gpu_update_clock(gpu); | |
1722 | mutex_unlock(&gpu->lock); | |
1723 | ||
1724 | return 0; | |
1725 | } | |
1726 | ||
1727 | static struct thermal_cooling_device_ops cooling_ops = { | |
1728 | .get_max_state = etnaviv_gpu_cooling_get_max_state, | |
1729 | .get_cur_state = etnaviv_gpu_cooling_get_cur_state, | |
1730 | .set_cur_state = etnaviv_gpu_cooling_set_cur_state, | |
1731 | }; | |
1732 | ||
a8c21a54 T |
1733 | static int etnaviv_gpu_bind(struct device *dev, struct device *master, |
1734 | void *data) | |
1735 | { | |
1736 | struct drm_device *drm = data; | |
1737 | struct etnaviv_drm_private *priv = drm->dev_private; | |
1738 | struct etnaviv_gpu *gpu = dev_get_drvdata(dev); | |
1739 | int ret; | |
1740 | ||
5247e2aa LS |
1741 | if (IS_ENABLED(CONFIG_THERMAL)) { |
1742 | gpu->cooling = thermal_of_cooling_device_register(dev->of_node, | |
bcdfb5e5 | 1743 | (char *)dev_name(dev), gpu, &cooling_ops); |
5247e2aa LS |
1744 | if (IS_ERR(gpu->cooling)) |
1745 | return PTR_ERR(gpu->cooling); | |
1746 | } | |
bcdfb5e5 | 1747 | |
a8c21a54 T |
1748 | #ifdef CONFIG_PM |
1749 | ret = pm_runtime_get_sync(gpu->dev); | |
1750 | #else | |
1751 | ret = etnaviv_gpu_clk_enable(gpu); | |
1752 | #endif | |
bcdfb5e5 RK |
1753 | if (ret < 0) { |
1754 | thermal_cooling_device_unregister(gpu->cooling); | |
a8c21a54 | 1755 | return ret; |
bcdfb5e5 | 1756 | } |
a8c21a54 T |
1757 | |
1758 | gpu->drm = drm; | |
f54d1867 | 1759 | gpu->fence_context = dma_fence_context_alloc(1); |
a8c21a54 T |
1760 | spin_lock_init(&gpu->fence_spinlock); |
1761 | ||
1762 | INIT_LIST_HEAD(&gpu->active_cmd_list); | |
1763 | INIT_WORK(&gpu->retire_work, retire_worker); | |
357713ce | 1764 | INIT_WORK(&gpu->sync_point_work, sync_point_worker); |
a8c21a54 T |
1765 | INIT_WORK(&gpu->recover_work, recover_worker); |
1766 | init_waitqueue_head(&gpu->fence_event); | |
1767 | ||
43b70524 | 1768 | timer_setup(&gpu->hangcheck_timer, hangcheck_handler, TIMER_DEFERRABLE); |
a8c21a54 T |
1769 | |
1770 | priv->gpu[priv->num_gpus++] = gpu; | |
1771 | ||
1772 | pm_runtime_mark_last_busy(gpu->dev); | |
1773 | pm_runtime_put_autosuspend(gpu->dev); | |
1774 | ||
1775 | return 0; | |
1776 | } | |
1777 | ||
1778 | static void etnaviv_gpu_unbind(struct device *dev, struct device *master, | |
1779 | void *data) | |
1780 | { | |
1781 | struct etnaviv_gpu *gpu = dev_get_drvdata(dev); | |
1782 | ||
1783 | DBG("%s", dev_name(gpu->dev)); | |
1784 | ||
1785 | hangcheck_disable(gpu); | |
1786 | ||
1787 | #ifdef CONFIG_PM | |
1788 | pm_runtime_get_sync(gpu->dev); | |
1789 | pm_runtime_put_sync_suspend(gpu->dev); | |
1790 | #else | |
1791 | etnaviv_gpu_hw_suspend(gpu); | |
1792 | #endif | |
1793 | ||
1794 | if (gpu->buffer) { | |
ea1f5729 | 1795 | etnaviv_cmdbuf_free(gpu->buffer); |
a8c21a54 T |
1796 | gpu->buffer = NULL; |
1797 | } | |
1798 | ||
e66774dd LS |
1799 | if (gpu->cmdbuf_suballoc) { |
1800 | etnaviv_cmdbuf_suballoc_destroy(gpu->cmdbuf_suballoc); | |
1801 | gpu->cmdbuf_suballoc = NULL; | |
1802 | } | |
1803 | ||
a8c21a54 T |
1804 | if (gpu->mmu) { |
1805 | etnaviv_iommu_destroy(gpu->mmu); | |
1806 | gpu->mmu = NULL; | |
1807 | } | |
1808 | ||
1809 | gpu->drm = NULL; | |
bcdfb5e5 RK |
1810 | |
1811 | thermal_cooling_device_unregister(gpu->cooling); | |
1812 | gpu->cooling = NULL; | |
a8c21a54 T |
1813 | } |
1814 | ||
1815 | static const struct component_ops gpu_ops = { | |
1816 | .bind = etnaviv_gpu_bind, | |
1817 | .unbind = etnaviv_gpu_unbind, | |
1818 | }; | |
1819 | ||
1820 | static const struct of_device_id etnaviv_gpu_match[] = { | |
1821 | { | |
1822 | .compatible = "vivante,gc" | |
1823 | }, | |
1824 | { /* sentinel */ } | |
1825 | }; | |
1826 | ||
1827 | static int etnaviv_gpu_platform_probe(struct platform_device *pdev) | |
1828 | { | |
1829 | struct device *dev = &pdev->dev; | |
1830 | struct etnaviv_gpu *gpu; | |
dc227890 | 1831 | int err; |
a8c21a54 T |
1832 | |
1833 | gpu = devm_kzalloc(dev, sizeof(*gpu), GFP_KERNEL); | |
1834 | if (!gpu) | |
1835 | return -ENOMEM; | |
1836 | ||
1837 | gpu->dev = &pdev->dev; | |
1838 | mutex_init(&gpu->lock); | |
1839 | ||
a8c21a54 T |
1840 | /* Map registers: */ |
1841 | gpu->mmio = etnaviv_ioremap(pdev, NULL, dev_name(gpu->dev)); | |
1842 | if (IS_ERR(gpu->mmio)) | |
1843 | return PTR_ERR(gpu->mmio); | |
1844 | ||
1845 | /* Get Interrupt: */ | |
1846 | gpu->irq = platform_get_irq(pdev, 0); | |
1847 | if (gpu->irq < 0) { | |
db60eda3 FE |
1848 | dev_err(dev, "failed to get irq: %d\n", gpu->irq); |
1849 | return gpu->irq; | |
a8c21a54 T |
1850 | } |
1851 | ||
1852 | err = devm_request_irq(&pdev->dev, gpu->irq, irq_handler, 0, | |
1853 | dev_name(gpu->dev), gpu); | |
1854 | if (err) { | |
1855 | dev_err(dev, "failed to request IRQ%u: %d\n", gpu->irq, err); | |
db60eda3 | 1856 | return err; |
a8c21a54 T |
1857 | } |
1858 | ||
1859 | /* Get Clocks: */ | |
1860 | gpu->clk_bus = devm_clk_get(&pdev->dev, "bus"); | |
1861 | DBG("clk_bus: %p", gpu->clk_bus); | |
1862 | if (IS_ERR(gpu->clk_bus)) | |
1863 | gpu->clk_bus = NULL; | |
1864 | ||
1865 | gpu->clk_core = devm_clk_get(&pdev->dev, "core"); | |
1866 | DBG("clk_core: %p", gpu->clk_core); | |
1867 | if (IS_ERR(gpu->clk_core)) | |
1868 | gpu->clk_core = NULL; | |
d79fd1cc | 1869 | gpu->base_rate_core = clk_get_rate(gpu->clk_core); |
a8c21a54 T |
1870 | |
1871 | gpu->clk_shader = devm_clk_get(&pdev->dev, "shader"); | |
1872 | DBG("clk_shader: %p", gpu->clk_shader); | |
1873 | if (IS_ERR(gpu->clk_shader)) | |
1874 | gpu->clk_shader = NULL; | |
d79fd1cc | 1875 | gpu->base_rate_shader = clk_get_rate(gpu->clk_shader); |
a8c21a54 T |
1876 | |
1877 | /* TODO: figure out max mapped size */ | |
1878 | dev_set_drvdata(dev, gpu); | |
1879 | ||
1880 | /* | |
1881 | * We treat the device as initially suspended. The runtime PM | |
1882 | * autosuspend delay is rather arbitary: no measurements have | |
1883 | * yet been performed to determine an appropriate value. | |
1884 | */ | |
1885 | pm_runtime_use_autosuspend(gpu->dev); | |
1886 | pm_runtime_set_autosuspend_delay(gpu->dev, 200); | |
1887 | pm_runtime_enable(gpu->dev); | |
1888 | ||
1889 | err = component_add(&pdev->dev, &gpu_ops); | |
1890 | if (err < 0) { | |
1891 | dev_err(&pdev->dev, "failed to register component: %d\n", err); | |
db60eda3 | 1892 | return err; |
a8c21a54 T |
1893 | } |
1894 | ||
1895 | return 0; | |
a8c21a54 T |
1896 | } |
1897 | ||
1898 | static int etnaviv_gpu_platform_remove(struct platform_device *pdev) | |
1899 | { | |
1900 | component_del(&pdev->dev, &gpu_ops); | |
1901 | pm_runtime_disable(&pdev->dev); | |
1902 | return 0; | |
1903 | } | |
1904 | ||
1905 | #ifdef CONFIG_PM | |
1906 | static int etnaviv_gpu_rpm_suspend(struct device *dev) | |
1907 | { | |
1908 | struct etnaviv_gpu *gpu = dev_get_drvdata(dev); | |
1909 | u32 idle, mask; | |
1910 | ||
1911 | /* If we have outstanding fences, we're not idle */ | |
1912 | if (gpu->completed_fence != gpu->active_fence) | |
1913 | return -EBUSY; | |
1914 | ||
1915 | /* Check whether the hardware (except FE) is idle */ | |
1916 | mask = gpu->idle_mask & ~VIVS_HI_IDLE_STATE_FE; | |
1917 | idle = gpu_read(gpu, VIVS_HI_IDLE_STATE) & mask; | |
1918 | if (idle != mask) | |
1919 | return -EBUSY; | |
1920 | ||
1921 | return etnaviv_gpu_hw_suspend(gpu); | |
1922 | } | |
1923 | ||
1924 | static int etnaviv_gpu_rpm_resume(struct device *dev) | |
1925 | { | |
1926 | struct etnaviv_gpu *gpu = dev_get_drvdata(dev); | |
1927 | int ret; | |
1928 | ||
1929 | ret = etnaviv_gpu_clk_enable(gpu); | |
1930 | if (ret) | |
1931 | return ret; | |
1932 | ||
1933 | /* Re-initialise the basic hardware state */ | |
1934 | if (gpu->drm && gpu->buffer) { | |
1935 | ret = etnaviv_gpu_hw_resume(gpu); | |
1936 | if (ret) { | |
1937 | etnaviv_gpu_clk_disable(gpu); | |
1938 | return ret; | |
1939 | } | |
1940 | } | |
1941 | ||
1942 | return 0; | |
1943 | } | |
1944 | #endif | |
1945 | ||
1946 | static const struct dev_pm_ops etnaviv_gpu_pm_ops = { | |
1947 | SET_RUNTIME_PM_OPS(etnaviv_gpu_rpm_suspend, etnaviv_gpu_rpm_resume, | |
1948 | NULL) | |
1949 | }; | |
1950 | ||
1951 | struct platform_driver etnaviv_gpu_driver = { | |
1952 | .driver = { | |
1953 | .name = "etnaviv-gpu", | |
1954 | .owner = THIS_MODULE, | |
1955 | .pm = &etnaviv_gpu_pm_ops, | |
1956 | .of_match_table = etnaviv_gpu_match, | |
1957 | }, | |
1958 | .probe = etnaviv_gpu_platform_probe, | |
1959 | .remove = etnaviv_gpu_platform_remove, | |
1960 | .id_table = gpu_ids, | |
1961 | }; |