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1/*
2 * Copyright 2014 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22
23#include <linux/bsearch.h>
24#include <linux/pci.h>
25#include <linux/slab.h>
26#include "kfd_priv.h"
27#include "kfd_device_queue_manager.h"
28#include "kfd_pm4_headers_vi.h"
29#include "cwsr_trap_handler.h"
30#include "kfd_iommu.h"
31#include "amdgpu_amdkfd.h"
32
33#define MQD_SIZE_ALIGNED 768
34
35/*
36 * kfd_locked is used to lock the kfd driver during suspend or reset
37 * once locked, kfd driver will stop any further GPU execution.
38 * create process (open) will return -EAGAIN.
39 */
40static atomic_t kfd_locked = ATOMIC_INIT(0);
41
42#ifdef CONFIG_DRM_AMDGPU_CIK
43extern const struct kfd2kgd_calls gfx_v7_kfd2kgd;
44#endif
45extern const struct kfd2kgd_calls gfx_v8_kfd2kgd;
46extern const struct kfd2kgd_calls gfx_v9_kfd2kgd;
47extern const struct kfd2kgd_calls arcturus_kfd2kgd;
48extern const struct kfd2kgd_calls gfx_v10_kfd2kgd;
49extern const struct kfd2kgd_calls gfx_v10_3_kfd2kgd;
50
51static const struct kfd2kgd_calls *kfd2kgd_funcs[] = {
52#ifdef KFD_SUPPORT_IOMMU_V2
53#ifdef CONFIG_DRM_AMDGPU_CIK
54 [CHIP_KAVERI] = &gfx_v7_kfd2kgd,
55#endif
56 [CHIP_CARRIZO] = &gfx_v8_kfd2kgd,
57 [CHIP_RAVEN] = &gfx_v9_kfd2kgd,
58#endif
59#ifdef CONFIG_DRM_AMDGPU_CIK
60 [CHIP_HAWAII] = &gfx_v7_kfd2kgd,
61#endif
62 [CHIP_TONGA] = &gfx_v8_kfd2kgd,
63 [CHIP_FIJI] = &gfx_v8_kfd2kgd,
64 [CHIP_POLARIS10] = &gfx_v8_kfd2kgd,
65 [CHIP_POLARIS11] = &gfx_v8_kfd2kgd,
66 [CHIP_POLARIS12] = &gfx_v8_kfd2kgd,
67 [CHIP_VEGAM] = &gfx_v8_kfd2kgd,
68 [CHIP_VEGA10] = &gfx_v9_kfd2kgd,
69 [CHIP_VEGA12] = &gfx_v9_kfd2kgd,
70 [CHIP_VEGA20] = &gfx_v9_kfd2kgd,
71 [CHIP_RENOIR] = &gfx_v9_kfd2kgd,
72 [CHIP_ARCTURUS] = &arcturus_kfd2kgd,
73 [CHIP_NAVI10] = &gfx_v10_kfd2kgd,
74 [CHIP_NAVI12] = &gfx_v10_kfd2kgd,
75 [CHIP_NAVI14] = &gfx_v10_kfd2kgd,
76 [CHIP_SIENNA_CICHLID] = &gfx_v10_3_kfd2kgd,
77 [CHIP_NAVY_FLOUNDER] = &gfx_v10_3_kfd2kgd,
78};
79
80#ifdef KFD_SUPPORT_IOMMU_V2
81static const struct kfd_device_info kaveri_device_info = {
82 .asic_family = CHIP_KAVERI,
83 .asic_name = "kaveri",
84 .max_pasid_bits = 16,
85 /* max num of queues for KV.TODO should be a dynamic value */
86 .max_no_of_hqd = 24,
87 .doorbell_size = 4,
88 .ih_ring_entry_size = 4 * sizeof(uint32_t),
89 .event_interrupt_class = &event_interrupt_class_cik,
90 .num_of_watch_points = 4,
91 .mqd_size_aligned = MQD_SIZE_ALIGNED,
92 .supports_cwsr = false,
93 .needs_iommu_device = true,
94 .needs_pci_atomics = false,
95 .num_sdma_engines = 2,
96 .num_xgmi_sdma_engines = 0,
97 .num_sdma_queues_per_engine = 2,
98};
99
100static const struct kfd_device_info carrizo_device_info = {
101 .asic_family = CHIP_CARRIZO,
102 .asic_name = "carrizo",
103 .max_pasid_bits = 16,
104 /* max num of queues for CZ.TODO should be a dynamic value */
105 .max_no_of_hqd = 24,
106 .doorbell_size = 4,
107 .ih_ring_entry_size = 4 * sizeof(uint32_t),
108 .event_interrupt_class = &event_interrupt_class_cik,
109 .num_of_watch_points = 4,
110 .mqd_size_aligned = MQD_SIZE_ALIGNED,
111 .supports_cwsr = true,
112 .needs_iommu_device = true,
113 .needs_pci_atomics = false,
114 .num_sdma_engines = 2,
115 .num_xgmi_sdma_engines = 0,
116 .num_sdma_queues_per_engine = 2,
117};
118
119static const struct kfd_device_info raven_device_info = {
120 .asic_family = CHIP_RAVEN,
121 .asic_name = "raven",
122 .max_pasid_bits = 16,
123 .max_no_of_hqd = 24,
124 .doorbell_size = 8,
125 .ih_ring_entry_size = 8 * sizeof(uint32_t),
126 .event_interrupt_class = &event_interrupt_class_v9,
127 .num_of_watch_points = 4,
128 .mqd_size_aligned = MQD_SIZE_ALIGNED,
129 .supports_cwsr = true,
130 .needs_iommu_device = true,
131 .needs_pci_atomics = true,
132 .num_sdma_engines = 1,
133 .num_xgmi_sdma_engines = 0,
134 .num_sdma_queues_per_engine = 2,
135};
136#endif
137
138static const struct kfd_device_info hawaii_device_info = {
139 .asic_family = CHIP_HAWAII,
140 .asic_name = "hawaii",
141 .max_pasid_bits = 16,
142 /* max num of queues for KV.TODO should be a dynamic value */
143 .max_no_of_hqd = 24,
144 .doorbell_size = 4,
145 .ih_ring_entry_size = 4 * sizeof(uint32_t),
146 .event_interrupt_class = &event_interrupt_class_cik,
147 .num_of_watch_points = 4,
148 .mqd_size_aligned = MQD_SIZE_ALIGNED,
149 .supports_cwsr = false,
150 .needs_iommu_device = false,
151 .needs_pci_atomics = false,
152 .num_sdma_engines = 2,
153 .num_xgmi_sdma_engines = 0,
154 .num_sdma_queues_per_engine = 2,
155};
156
157static const struct kfd_device_info tonga_device_info = {
158 .asic_family = CHIP_TONGA,
159 .asic_name = "tonga",
160 .max_pasid_bits = 16,
161 .max_no_of_hqd = 24,
162 .doorbell_size = 4,
163 .ih_ring_entry_size = 4 * sizeof(uint32_t),
164 .event_interrupt_class = &event_interrupt_class_cik,
165 .num_of_watch_points = 4,
166 .mqd_size_aligned = MQD_SIZE_ALIGNED,
167 .supports_cwsr = false,
168 .needs_iommu_device = false,
169 .needs_pci_atomics = true,
170 .num_sdma_engines = 2,
171 .num_xgmi_sdma_engines = 0,
172 .num_sdma_queues_per_engine = 2,
173};
174
175static const struct kfd_device_info fiji_device_info = {
176 .asic_family = CHIP_FIJI,
177 .asic_name = "fiji",
178 .max_pasid_bits = 16,
179 .max_no_of_hqd = 24,
180 .doorbell_size = 4,
181 .ih_ring_entry_size = 4 * sizeof(uint32_t),
182 .event_interrupt_class = &event_interrupt_class_cik,
183 .num_of_watch_points = 4,
184 .mqd_size_aligned = MQD_SIZE_ALIGNED,
185 .supports_cwsr = true,
186 .needs_iommu_device = false,
187 .needs_pci_atomics = true,
188 .num_sdma_engines = 2,
189 .num_xgmi_sdma_engines = 0,
190 .num_sdma_queues_per_engine = 2,
191};
192
193static const struct kfd_device_info fiji_vf_device_info = {
194 .asic_family = CHIP_FIJI,
195 .asic_name = "fiji",
196 .max_pasid_bits = 16,
197 .max_no_of_hqd = 24,
198 .doorbell_size = 4,
199 .ih_ring_entry_size = 4 * sizeof(uint32_t),
200 .event_interrupt_class = &event_interrupt_class_cik,
201 .num_of_watch_points = 4,
202 .mqd_size_aligned = MQD_SIZE_ALIGNED,
203 .supports_cwsr = true,
204 .needs_iommu_device = false,
205 .needs_pci_atomics = false,
206 .num_sdma_engines = 2,
207 .num_xgmi_sdma_engines = 0,
208 .num_sdma_queues_per_engine = 2,
209};
210
211
212static const struct kfd_device_info polaris10_device_info = {
213 .asic_family = CHIP_POLARIS10,
214 .asic_name = "polaris10",
215 .max_pasid_bits = 16,
216 .max_no_of_hqd = 24,
217 .doorbell_size = 4,
218 .ih_ring_entry_size = 4 * sizeof(uint32_t),
219 .event_interrupt_class = &event_interrupt_class_cik,
220 .num_of_watch_points = 4,
221 .mqd_size_aligned = MQD_SIZE_ALIGNED,
222 .supports_cwsr = true,
223 .needs_iommu_device = false,
224 .needs_pci_atomics = true,
225 .num_sdma_engines = 2,
226 .num_xgmi_sdma_engines = 0,
227 .num_sdma_queues_per_engine = 2,
228};
229
230static const struct kfd_device_info polaris10_vf_device_info = {
231 .asic_family = CHIP_POLARIS10,
232 .asic_name = "polaris10",
233 .max_pasid_bits = 16,
234 .max_no_of_hqd = 24,
235 .doorbell_size = 4,
236 .ih_ring_entry_size = 4 * sizeof(uint32_t),
237 .event_interrupt_class = &event_interrupt_class_cik,
238 .num_of_watch_points = 4,
239 .mqd_size_aligned = MQD_SIZE_ALIGNED,
240 .supports_cwsr = true,
241 .needs_iommu_device = false,
242 .needs_pci_atomics = false,
243 .num_sdma_engines = 2,
244 .num_xgmi_sdma_engines = 0,
245 .num_sdma_queues_per_engine = 2,
246};
247
248static const struct kfd_device_info polaris11_device_info = {
249 .asic_family = CHIP_POLARIS11,
250 .asic_name = "polaris11",
251 .max_pasid_bits = 16,
252 .max_no_of_hqd = 24,
253 .doorbell_size = 4,
254 .ih_ring_entry_size = 4 * sizeof(uint32_t),
255 .event_interrupt_class = &event_interrupt_class_cik,
256 .num_of_watch_points = 4,
257 .mqd_size_aligned = MQD_SIZE_ALIGNED,
258 .supports_cwsr = true,
259 .needs_iommu_device = false,
260 .needs_pci_atomics = true,
261 .num_sdma_engines = 2,
262 .num_xgmi_sdma_engines = 0,
263 .num_sdma_queues_per_engine = 2,
264};
265
266static const struct kfd_device_info polaris12_device_info = {
267 .asic_family = CHIP_POLARIS12,
268 .asic_name = "polaris12",
269 .max_pasid_bits = 16,
270 .max_no_of_hqd = 24,
271 .doorbell_size = 4,
272 .ih_ring_entry_size = 4 * sizeof(uint32_t),
273 .event_interrupt_class = &event_interrupt_class_cik,
274 .num_of_watch_points = 4,
275 .mqd_size_aligned = MQD_SIZE_ALIGNED,
276 .supports_cwsr = true,
277 .needs_iommu_device = false,
278 .needs_pci_atomics = true,
279 .num_sdma_engines = 2,
280 .num_xgmi_sdma_engines = 0,
281 .num_sdma_queues_per_engine = 2,
282};
283
284static const struct kfd_device_info vegam_device_info = {
285 .asic_family = CHIP_VEGAM,
286 .asic_name = "vegam",
287 .max_pasid_bits = 16,
288 .max_no_of_hqd = 24,
289 .doorbell_size = 4,
290 .ih_ring_entry_size = 4 * sizeof(uint32_t),
291 .event_interrupt_class = &event_interrupt_class_cik,
292 .num_of_watch_points = 4,
293 .mqd_size_aligned = MQD_SIZE_ALIGNED,
294 .supports_cwsr = true,
295 .needs_iommu_device = false,
296 .needs_pci_atomics = true,
297 .num_sdma_engines = 2,
298 .num_xgmi_sdma_engines = 0,
299 .num_sdma_queues_per_engine = 2,
300};
301
302static const struct kfd_device_info vega10_device_info = {
303 .asic_family = CHIP_VEGA10,
304 .asic_name = "vega10",
305 .max_pasid_bits = 16,
306 .max_no_of_hqd = 24,
307 .doorbell_size = 8,
308 .ih_ring_entry_size = 8 * sizeof(uint32_t),
309 .event_interrupt_class = &event_interrupt_class_v9,
310 .num_of_watch_points = 4,
311 .mqd_size_aligned = MQD_SIZE_ALIGNED,
312 .supports_cwsr = true,
313 .needs_iommu_device = false,
314 .needs_pci_atomics = false,
315 .num_sdma_engines = 2,
316 .num_xgmi_sdma_engines = 0,
317 .num_sdma_queues_per_engine = 2,
318};
319
320static const struct kfd_device_info vega10_vf_device_info = {
321 .asic_family = CHIP_VEGA10,
322 .asic_name = "vega10",
323 .max_pasid_bits = 16,
324 .max_no_of_hqd = 24,
325 .doorbell_size = 8,
326 .ih_ring_entry_size = 8 * sizeof(uint32_t),
327 .event_interrupt_class = &event_interrupt_class_v9,
328 .num_of_watch_points = 4,
329 .mqd_size_aligned = MQD_SIZE_ALIGNED,
330 .supports_cwsr = true,
331 .needs_iommu_device = false,
332 .needs_pci_atomics = false,
333 .num_sdma_engines = 2,
334 .num_xgmi_sdma_engines = 0,
335 .num_sdma_queues_per_engine = 2,
336};
337
338static const struct kfd_device_info vega12_device_info = {
339 .asic_family = CHIP_VEGA12,
340 .asic_name = "vega12",
341 .max_pasid_bits = 16,
342 .max_no_of_hqd = 24,
343 .doorbell_size = 8,
344 .ih_ring_entry_size = 8 * sizeof(uint32_t),
345 .event_interrupt_class = &event_interrupt_class_v9,
346 .num_of_watch_points = 4,
347 .mqd_size_aligned = MQD_SIZE_ALIGNED,
348 .supports_cwsr = true,
349 .needs_iommu_device = false,
350 .needs_pci_atomics = false,
351 .num_sdma_engines = 2,
352 .num_xgmi_sdma_engines = 0,
353 .num_sdma_queues_per_engine = 2,
354};
355
356static const struct kfd_device_info vega20_device_info = {
357 .asic_family = CHIP_VEGA20,
358 .asic_name = "vega20",
359 .max_pasid_bits = 16,
360 .max_no_of_hqd = 24,
361 .doorbell_size = 8,
362 .ih_ring_entry_size = 8 * sizeof(uint32_t),
363 .event_interrupt_class = &event_interrupt_class_v9,
364 .num_of_watch_points = 4,
365 .mqd_size_aligned = MQD_SIZE_ALIGNED,
366 .supports_cwsr = true,
367 .needs_iommu_device = false,
368 .needs_pci_atomics = false,
369 .num_sdma_engines = 2,
370 .num_xgmi_sdma_engines = 0,
371 .num_sdma_queues_per_engine = 8,
372};
373
374static const struct kfd_device_info arcturus_device_info = {
375 .asic_family = CHIP_ARCTURUS,
376 .asic_name = "arcturus",
377 .max_pasid_bits = 16,
378 .max_no_of_hqd = 24,
379 .doorbell_size = 8,
380 .ih_ring_entry_size = 8 * sizeof(uint32_t),
381 .event_interrupt_class = &event_interrupt_class_v9,
382 .num_of_watch_points = 4,
383 .mqd_size_aligned = MQD_SIZE_ALIGNED,
384 .supports_cwsr = true,
385 .needs_iommu_device = false,
386 .needs_pci_atomics = false,
387 .num_sdma_engines = 2,
388 .num_xgmi_sdma_engines = 6,
389 .num_sdma_queues_per_engine = 8,
390};
391
392static const struct kfd_device_info renoir_device_info = {
393 .asic_family = CHIP_RENOIR,
394 .asic_name = "renoir",
395 .max_pasid_bits = 16,
396 .max_no_of_hqd = 24,
397 .doorbell_size = 8,
398 .ih_ring_entry_size = 8 * sizeof(uint32_t),
399 .event_interrupt_class = &event_interrupt_class_v9,
400 .num_of_watch_points = 4,
401 .mqd_size_aligned = MQD_SIZE_ALIGNED,
402 .supports_cwsr = true,
403 .needs_iommu_device = false,
404 .needs_pci_atomics = false,
405 .num_sdma_engines = 1,
406 .num_xgmi_sdma_engines = 0,
407 .num_sdma_queues_per_engine = 2,
408};
409
410static const struct kfd_device_info navi10_device_info = {
411 .asic_family = CHIP_NAVI10,
412 .asic_name = "navi10",
413 .max_pasid_bits = 16,
414 .max_no_of_hqd = 24,
415 .doorbell_size = 8,
416 .ih_ring_entry_size = 8 * sizeof(uint32_t),
417 .event_interrupt_class = &event_interrupt_class_v9,
418 .num_of_watch_points = 4,
419 .mqd_size_aligned = MQD_SIZE_ALIGNED,
420 .needs_iommu_device = false,
421 .supports_cwsr = true,
422 .needs_pci_atomics = false,
423 .num_sdma_engines = 2,
424 .num_xgmi_sdma_engines = 0,
425 .num_sdma_queues_per_engine = 8,
426};
427
428static const struct kfd_device_info navi12_device_info = {
429 .asic_family = CHIP_NAVI12,
430 .asic_name = "navi12",
431 .max_pasid_bits = 16,
432 .max_no_of_hqd = 24,
433 .doorbell_size = 8,
434 .ih_ring_entry_size = 8 * sizeof(uint32_t),
435 .event_interrupt_class = &event_interrupt_class_v9,
436 .num_of_watch_points = 4,
437 .mqd_size_aligned = MQD_SIZE_ALIGNED,
438 .needs_iommu_device = false,
439 .supports_cwsr = true,
440 .needs_pci_atomics = false,
441 .num_sdma_engines = 2,
442 .num_xgmi_sdma_engines = 0,
443 .num_sdma_queues_per_engine = 8,
444};
445
446static const struct kfd_device_info navi14_device_info = {
447 .asic_family = CHIP_NAVI14,
448 .asic_name = "navi14",
449 .max_pasid_bits = 16,
450 .max_no_of_hqd = 24,
451 .doorbell_size = 8,
452 .ih_ring_entry_size = 8 * sizeof(uint32_t),
453 .event_interrupt_class = &event_interrupt_class_v9,
454 .num_of_watch_points = 4,
455 .mqd_size_aligned = MQD_SIZE_ALIGNED,
456 .needs_iommu_device = false,
457 .supports_cwsr = true,
458 .needs_pci_atomics = false,
459 .num_sdma_engines = 2,
460 .num_xgmi_sdma_engines = 0,
461 .num_sdma_queues_per_engine = 8,
462};
463
464static const struct kfd_device_info sienna_cichlid_device_info = {
465 .asic_family = CHIP_SIENNA_CICHLID,
466 .asic_name = "sienna_cichlid",
467 .max_pasid_bits = 16,
468 .max_no_of_hqd = 24,
469 .doorbell_size = 8,
470 .ih_ring_entry_size = 8 * sizeof(uint32_t),
471 .event_interrupt_class = &event_interrupt_class_v9,
472 .num_of_watch_points = 4,
473 .mqd_size_aligned = MQD_SIZE_ALIGNED,
474 .needs_iommu_device = false,
475 .supports_cwsr = true,
476 .needs_pci_atomics = false,
477 .num_sdma_engines = 4,
478 .num_xgmi_sdma_engines = 0,
479 .num_sdma_queues_per_engine = 8,
480};
481
482static const struct kfd_device_info navy_flounder_device_info = {
483 .asic_family = CHIP_NAVY_FLOUNDER,
484 .asic_name = "navy_flounder",
485 .max_pasid_bits = 16,
486 .max_no_of_hqd = 24,
487 .doorbell_size = 8,
488 .ih_ring_entry_size = 8 * sizeof(uint32_t),
489 .event_interrupt_class = &event_interrupt_class_v9,
490 .num_of_watch_points = 4,
491 .mqd_size_aligned = MQD_SIZE_ALIGNED,
492 .needs_iommu_device = false,
493 .supports_cwsr = true,
494 .needs_pci_atomics = false,
495 .num_sdma_engines = 2,
496 .num_xgmi_sdma_engines = 0,
497 .num_sdma_queues_per_engine = 8,
498};
499
500/* For each entry, [0] is regular and [1] is virtualisation device. */
501static const struct kfd_device_info *kfd_supported_devices[][2] = {
502#ifdef KFD_SUPPORT_IOMMU_V2
503 [CHIP_KAVERI] = {&kaveri_device_info, NULL},
504 [CHIP_CARRIZO] = {&carrizo_device_info, NULL},
505 [CHIP_RAVEN] = {&raven_device_info, NULL},
506#endif
507 [CHIP_HAWAII] = {&hawaii_device_info, NULL},
508 [CHIP_TONGA] = {&tonga_device_info, NULL},
509 [CHIP_FIJI] = {&fiji_device_info, &fiji_vf_device_info},
510 [CHIP_POLARIS10] = {&polaris10_device_info, &polaris10_vf_device_info},
511 [CHIP_POLARIS11] = {&polaris11_device_info, NULL},
512 [CHIP_POLARIS12] = {&polaris12_device_info, NULL},
513 [CHIP_VEGAM] = {&vegam_device_info, NULL},
514 [CHIP_VEGA10] = {&vega10_device_info, &vega10_vf_device_info},
515 [CHIP_VEGA12] = {&vega12_device_info, NULL},
516 [CHIP_VEGA20] = {&vega20_device_info, NULL},
517 [CHIP_RENOIR] = {&renoir_device_info, NULL},
518 [CHIP_ARCTURUS] = {&arcturus_device_info, &arcturus_device_info},
519 [CHIP_NAVI10] = {&navi10_device_info, NULL},
520 [CHIP_NAVI12] = {&navi12_device_info, &navi12_device_info},
521 [CHIP_NAVI14] = {&navi14_device_info, NULL},
522 [CHIP_SIENNA_CICHLID] = {&sienna_cichlid_device_info, &sienna_cichlid_device_info},
523 [CHIP_NAVY_FLOUNDER] = {&navy_flounder_device_info, &navy_flounder_device_info},
524};
525
526static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
527 unsigned int chunk_size);
528static void kfd_gtt_sa_fini(struct kfd_dev *kfd);
529
530static int kfd_resume(struct kfd_dev *kfd);
531
532struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd,
533 struct pci_dev *pdev, unsigned int asic_type, bool vf)
534{
535 struct kfd_dev *kfd;
536 const struct kfd_device_info *device_info;
537 const struct kfd2kgd_calls *f2g;
538
539 if (asic_type >= sizeof(kfd_supported_devices) / (sizeof(void *) * 2)
540 || asic_type >= sizeof(kfd2kgd_funcs) / sizeof(void *)) {
541 dev_err(kfd_device, "asic_type %d out of range\n", asic_type);
542 return NULL; /* asic_type out of range */
543 }
544
545 device_info = kfd_supported_devices[asic_type][vf];
546 f2g = kfd2kgd_funcs[asic_type];
547
548 if (!device_info || !f2g) {
549 dev_err(kfd_device, "%s %s not supported in kfd\n",
550 amdgpu_asic_name[asic_type], vf ? "VF" : "");
551 return NULL;
552 }
553
554 kfd = kzalloc(sizeof(*kfd), GFP_KERNEL);
555 if (!kfd)
556 return NULL;
557
558 /* Allow BIF to recode atomics to PCIe 3.0 AtomicOps.
559 * 32 and 64-bit requests are possible and must be
560 * supported.
561 */
562 kfd->pci_atomic_requested = amdgpu_amdkfd_have_atomics_support(kgd);
563 if (device_info->needs_pci_atomics &&
564 !kfd->pci_atomic_requested) {
565 dev_info(kfd_device,
566 "skipped device %x:%x, PCI rejects atomics\n",
567 pdev->vendor, pdev->device);
568 kfree(kfd);
569 return NULL;
570 }
571
572 kfd->kgd = kgd;
573 kfd->device_info = device_info;
574 kfd->pdev = pdev;
575 kfd->init_complete = false;
576 kfd->kfd2kgd = f2g;
577 atomic_set(&kfd->compute_profile, 0);
578
579 mutex_init(&kfd->doorbell_mutex);
580 memset(&kfd->doorbell_available_index, 0,
581 sizeof(kfd->doorbell_available_index));
582
583 atomic_set(&kfd->sram_ecc_flag, 0);
584
585 return kfd;
586}
587
588static void kfd_cwsr_init(struct kfd_dev *kfd)
589{
590 if (cwsr_enable && kfd->device_info->supports_cwsr) {
591 if (kfd->device_info->asic_family < CHIP_VEGA10) {
592 BUILD_BUG_ON(sizeof(cwsr_trap_gfx8_hex) > PAGE_SIZE);
593 kfd->cwsr_isa = cwsr_trap_gfx8_hex;
594 kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx8_hex);
595 } else if (kfd->device_info->asic_family == CHIP_ARCTURUS) {
596 BUILD_BUG_ON(sizeof(cwsr_trap_arcturus_hex) > PAGE_SIZE);
597 kfd->cwsr_isa = cwsr_trap_arcturus_hex;
598 kfd->cwsr_isa_size = sizeof(cwsr_trap_arcturus_hex);
599 } else if (kfd->device_info->asic_family < CHIP_NAVI10) {
600 BUILD_BUG_ON(sizeof(cwsr_trap_gfx9_hex) > PAGE_SIZE);
601 kfd->cwsr_isa = cwsr_trap_gfx9_hex;
602 kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx9_hex);
603 } else if (kfd->device_info->asic_family < CHIP_SIENNA_CICHLID) {
604 BUILD_BUG_ON(sizeof(cwsr_trap_nv1x_hex) > PAGE_SIZE);
605 kfd->cwsr_isa = cwsr_trap_nv1x_hex;
606 kfd->cwsr_isa_size = sizeof(cwsr_trap_nv1x_hex);
607 } else {
608 BUILD_BUG_ON(sizeof(cwsr_trap_gfx10_hex) > PAGE_SIZE);
609 kfd->cwsr_isa = cwsr_trap_gfx10_hex;
610 kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx10_hex);
611 }
612
613 kfd->cwsr_enabled = true;
614 }
615}
616
617static int kfd_gws_init(struct kfd_dev *kfd)
618{
619 int ret = 0;
620
621 if (kfd->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS)
622 return 0;
623
624 if (hws_gws_support
625 || (kfd->device_info->asic_family == CHIP_VEGA10
626 && kfd->mec2_fw_version >= 0x81b3)
627 || (kfd->device_info->asic_family >= CHIP_VEGA12
628 && kfd->device_info->asic_family <= CHIP_RAVEN
629 && kfd->mec2_fw_version >= 0x1b3)
630 || (kfd->device_info->asic_family == CHIP_ARCTURUS
631 && kfd->mec2_fw_version >= 0x30))
632 ret = amdgpu_amdkfd_alloc_gws(kfd->kgd,
633 amdgpu_amdkfd_get_num_gws(kfd->kgd), &kfd->gws);
634
635 return ret;
636}
637
638static void kfd_smi_init(struct kfd_dev *dev) {
639 INIT_LIST_HEAD(&dev->smi_clients);
640 spin_lock_init(&dev->smi_lock);
641}
642
643bool kgd2kfd_device_init(struct kfd_dev *kfd,
644 struct drm_device *ddev,
645 const struct kgd2kfd_shared_resources *gpu_resources)
646{
647 unsigned int size;
648
649 kfd->ddev = ddev;
650 kfd->mec_fw_version = amdgpu_amdkfd_get_fw_version(kfd->kgd,
651 KGD_ENGINE_MEC1);
652 kfd->mec2_fw_version = amdgpu_amdkfd_get_fw_version(kfd->kgd,
653 KGD_ENGINE_MEC2);
654 kfd->sdma_fw_version = amdgpu_amdkfd_get_fw_version(kfd->kgd,
655 KGD_ENGINE_SDMA1);
656 kfd->shared_resources = *gpu_resources;
657
658 kfd->vm_info.first_vmid_kfd = ffs(gpu_resources->compute_vmid_bitmap)-1;
659 kfd->vm_info.last_vmid_kfd = fls(gpu_resources->compute_vmid_bitmap)-1;
660 kfd->vm_info.vmid_num_kfd = kfd->vm_info.last_vmid_kfd
661 - kfd->vm_info.first_vmid_kfd + 1;
662
663 /* Verify module parameters regarding mapped process number*/
664 if ((hws_max_conc_proc < 0)
665 || (hws_max_conc_proc > kfd->vm_info.vmid_num_kfd)) {
666 dev_err(kfd_device,
667 "hws_max_conc_proc %d must be between 0 and %d, use %d instead\n",
668 hws_max_conc_proc, kfd->vm_info.vmid_num_kfd,
669 kfd->vm_info.vmid_num_kfd);
670 kfd->max_proc_per_quantum = kfd->vm_info.vmid_num_kfd;
671 } else
672 kfd->max_proc_per_quantum = hws_max_conc_proc;
673
674 /* calculate max size of mqds needed for queues */
675 size = max_num_of_queues_per_device *
676 kfd->device_info->mqd_size_aligned;
677
678 /*
679 * calculate max size of runlist packet.
680 * There can be only 2 packets at once
681 */
682 size += (KFD_MAX_NUM_OF_PROCESSES * sizeof(struct pm4_mes_map_process) +
683 max_num_of_queues_per_device * sizeof(struct pm4_mes_map_queues)
684 + sizeof(struct pm4_mes_runlist)) * 2;
685
686 /* Add size of HIQ & DIQ */
687 size += KFD_KERNEL_QUEUE_SIZE * 2;
688
689 /* add another 512KB for all other allocations on gart (HPD, fences) */
690 size += 512 * 1024;
691
692 if (amdgpu_amdkfd_alloc_gtt_mem(
693 kfd->kgd, size, &kfd->gtt_mem,
694 &kfd->gtt_start_gpu_addr, &kfd->gtt_start_cpu_ptr,
695 false)) {
696 dev_err(kfd_device, "Could not allocate %d bytes\n", size);
697 goto alloc_gtt_mem_failure;
698 }
699
700 dev_info(kfd_device, "Allocated %d bytes on gart\n", size);
701
702 /* Initialize GTT sa with 512 byte chunk size */
703 if (kfd_gtt_sa_init(kfd, size, 512) != 0) {
704 dev_err(kfd_device, "Error initializing gtt sub-allocator\n");
705 goto kfd_gtt_sa_init_error;
706 }
707
708 if (kfd_doorbell_init(kfd)) {
709 dev_err(kfd_device,
710 "Error initializing doorbell aperture\n");
711 goto kfd_doorbell_error;
712 }
713
714 if (kfd->kfd2kgd->get_hive_id)
715 kfd->hive_id = kfd->kfd2kgd->get_hive_id(kfd->kgd);
716
717 if (kfd->kfd2kgd->get_unique_id)
718 kfd->unique_id = kfd->kfd2kgd->get_unique_id(kfd->kgd);
719
720 if (kfd_interrupt_init(kfd)) {
721 dev_err(kfd_device, "Error initializing interrupts\n");
722 goto kfd_interrupt_error;
723 }
724
725 kfd->dqm = device_queue_manager_init(kfd);
726 if (!kfd->dqm) {
727 dev_err(kfd_device, "Error initializing queue manager\n");
728 goto device_queue_manager_error;
729 }
730
731 /* If supported on this device, allocate global GWS that is shared
732 * by all KFD processes
733 */
734 if (kfd_gws_init(kfd)) {
735 dev_err(kfd_device, "Could not allocate %d gws\n",
736 amdgpu_amdkfd_get_num_gws(kfd->kgd));
737 goto gws_error;
738 }
739
740 if (kfd_iommu_device_init(kfd)) {
741 dev_err(kfd_device, "Error initializing iommuv2\n");
742 goto device_iommu_error;
743 }
744
745 kfd_cwsr_init(kfd);
746
747 if (kfd_resume(kfd))
748 goto kfd_resume_error;
749
750 kfd->dbgmgr = NULL;
751
752 if (kfd_topology_add_device(kfd)) {
753 dev_err(kfd_device, "Error adding device to topology\n");
754 goto kfd_topology_add_device_error;
755 }
756
757 kfd_smi_init(kfd);
758
759 kfd->init_complete = true;
760 dev_info(kfd_device, "added device %x:%x\n", kfd->pdev->vendor,
761 kfd->pdev->device);
762
763 pr_debug("Starting kfd with the following scheduling policy %d\n",
764 kfd->dqm->sched_policy);
765
766 goto out;
767
768kfd_topology_add_device_error:
769kfd_resume_error:
770device_iommu_error:
771gws_error:
772 device_queue_manager_uninit(kfd->dqm);
773device_queue_manager_error:
774 kfd_interrupt_exit(kfd);
775kfd_interrupt_error:
776 kfd_doorbell_fini(kfd);
777kfd_doorbell_error:
778 kfd_gtt_sa_fini(kfd);
779kfd_gtt_sa_init_error:
780 amdgpu_amdkfd_free_gtt_mem(kfd->kgd, kfd->gtt_mem);
781alloc_gtt_mem_failure:
782 if (kfd->gws)
783 amdgpu_amdkfd_free_gws(kfd->kgd, kfd->gws);
784 dev_err(kfd_device,
785 "device %x:%x NOT added due to errors\n",
786 kfd->pdev->vendor, kfd->pdev->device);
787out:
788 return kfd->init_complete;
789}
790
791void kgd2kfd_device_exit(struct kfd_dev *kfd)
792{
793 if (kfd->init_complete) {
794 kgd2kfd_suspend(kfd, false);
795 device_queue_manager_uninit(kfd->dqm);
796 kfd_interrupt_exit(kfd);
797 kfd_topology_remove_device(kfd);
798 kfd_doorbell_fini(kfd);
799 kfd_gtt_sa_fini(kfd);
800 amdgpu_amdkfd_free_gtt_mem(kfd->kgd, kfd->gtt_mem);
801 if (kfd->gws)
802 amdgpu_amdkfd_free_gws(kfd->kgd, kfd->gws);
803 }
804
805 kfree(kfd);
806}
807
808int kgd2kfd_pre_reset(struct kfd_dev *kfd)
809{
810 if (!kfd->init_complete)
811 return 0;
812
813 kfd->dqm->ops.pre_reset(kfd->dqm);
814
815 kgd2kfd_suspend(kfd, false);
816
817 kfd_signal_reset_event(kfd);
818 return 0;
819}
820
821/*
822 * Fix me. KFD won't be able to resume existing process for now.
823 * We will keep all existing process in a evicted state and
824 * wait the process to be terminated.
825 */
826
827int kgd2kfd_post_reset(struct kfd_dev *kfd)
828{
829 int ret;
830
831 if (!kfd->init_complete)
832 return 0;
833
834 ret = kfd_resume(kfd);
835 if (ret)
836 return ret;
837 atomic_dec(&kfd_locked);
838
839 atomic_set(&kfd->sram_ecc_flag, 0);
840
841 return 0;
842}
843
844bool kfd_is_locked(void)
845{
846 return (atomic_read(&kfd_locked) > 0);
847}
848
849void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm)
850{
851 if (!kfd->init_complete)
852 return;
853
854 /* for runtime suspend, skip locking kfd */
855 if (!run_pm) {
856 /* For first KFD device suspend all the KFD processes */
857 if (atomic_inc_return(&kfd_locked) == 1)
858 kfd_suspend_all_processes();
859 }
860
861 kfd->dqm->ops.stop(kfd->dqm);
862 kfd_iommu_suspend(kfd);
863}
864
865int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm)
866{
867 int ret, count;
868
869 if (!kfd->init_complete)
870 return 0;
871
872 ret = kfd_resume(kfd);
873 if (ret)
874 return ret;
875
876 /* for runtime resume, skip unlocking kfd */
877 if (!run_pm) {
878 count = atomic_dec_return(&kfd_locked);
879 WARN_ONCE(count < 0, "KFD suspend / resume ref. error");
880 if (count == 0)
881 ret = kfd_resume_all_processes();
882 }
883
884 return ret;
885}
886
887static int kfd_resume(struct kfd_dev *kfd)
888{
889 int err = 0;
890
891 err = kfd_iommu_resume(kfd);
892 if (err) {
893 dev_err(kfd_device,
894 "Failed to resume IOMMU for device %x:%x\n",
895 kfd->pdev->vendor, kfd->pdev->device);
896 return err;
897 }
898
899 err = kfd->dqm->ops.start(kfd->dqm);
900 if (err) {
901 dev_err(kfd_device,
902 "Error starting queue manager for device %x:%x\n",
903 kfd->pdev->vendor, kfd->pdev->device);
904 goto dqm_start_error;
905 }
906
907 return err;
908
909dqm_start_error:
910 kfd_iommu_suspend(kfd);
911 return err;
912}
913
914static inline void kfd_queue_work(struct workqueue_struct *wq,
915 struct work_struct *work)
916{
917 int cpu, new_cpu;
918
919 cpu = new_cpu = smp_processor_id();
920 do {
921 new_cpu = cpumask_next(new_cpu, cpu_online_mask) % nr_cpu_ids;
922 if (cpu_to_node(new_cpu) == numa_node_id())
923 break;
924 } while (cpu != new_cpu);
925
926 queue_work_on(new_cpu, wq, work);
927}
928
929/* This is called directly from KGD at ISR. */
930void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry)
931{
932 uint32_t patched_ihre[KFD_MAX_RING_ENTRY_SIZE];
933 bool is_patched = false;
934 unsigned long flags;
935
936 if (!kfd->init_complete)
937 return;
938
939 if (kfd->device_info->ih_ring_entry_size > sizeof(patched_ihre)) {
940 dev_err_once(kfd_device, "Ring entry too small\n");
941 return;
942 }
943
944 spin_lock_irqsave(&kfd->interrupt_lock, flags);
945
946 if (kfd->interrupts_active
947 && interrupt_is_wanted(kfd, ih_ring_entry,
948 patched_ihre, &is_patched)
949 && enqueue_ih_ring_entry(kfd,
950 is_patched ? patched_ihre : ih_ring_entry))
951 kfd_queue_work(kfd->ih_wq, &kfd->interrupt_work);
952
953 spin_unlock_irqrestore(&kfd->interrupt_lock, flags);
954}
955
956int kgd2kfd_quiesce_mm(struct mm_struct *mm)
957{
958 struct kfd_process *p;
959 int r;
960
961 /* Because we are called from arbitrary context (workqueue) as opposed
962 * to process context, kfd_process could attempt to exit while we are
963 * running so the lookup function increments the process ref count.
964 */
965 p = kfd_lookup_process_by_mm(mm);
966 if (!p)
967 return -ESRCH;
968
969 WARN(debug_evictions, "Evicting pid %d", p->lead_thread->pid);
970 r = kfd_process_evict_queues(p);
971
972 kfd_unref_process(p);
973 return r;
974}
975
976int kgd2kfd_resume_mm(struct mm_struct *mm)
977{
978 struct kfd_process *p;
979 int r;
980
981 /* Because we are called from arbitrary context (workqueue) as opposed
982 * to process context, kfd_process could attempt to exit while we are
983 * running so the lookup function increments the process ref count.
984 */
985 p = kfd_lookup_process_by_mm(mm);
986 if (!p)
987 return -ESRCH;
988
989 r = kfd_process_restore_queues(p);
990
991 kfd_unref_process(p);
992 return r;
993}
994
995/** kgd2kfd_schedule_evict_and_restore_process - Schedules work queue that will
996 * prepare for safe eviction of KFD BOs that belong to the specified
997 * process.
998 *
999 * @mm: mm_struct that identifies the specified KFD process
1000 * @fence: eviction fence attached to KFD process BOs
1001 *
1002 */
1003int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
1004 struct dma_fence *fence)
1005{
1006 struct kfd_process *p;
1007 unsigned long active_time;
1008 unsigned long delay_jiffies = msecs_to_jiffies(PROCESS_ACTIVE_TIME_MS);
1009
1010 if (!fence)
1011 return -EINVAL;
1012
1013 if (dma_fence_is_signaled(fence))
1014 return 0;
1015
1016 p = kfd_lookup_process_by_mm(mm);
1017 if (!p)
1018 return -ENODEV;
1019
1020 if (fence->seqno == p->last_eviction_seqno)
1021 goto out;
1022
1023 p->last_eviction_seqno = fence->seqno;
1024
1025 /* Avoid KFD process starvation. Wait for at least
1026 * PROCESS_ACTIVE_TIME_MS before evicting the process again
1027 */
1028 active_time = get_jiffies_64() - p->last_restore_timestamp;
1029 if (delay_jiffies > active_time)
1030 delay_jiffies -= active_time;
1031 else
1032 delay_jiffies = 0;
1033
1034 /* During process initialization eviction_work.dwork is initialized
1035 * to kfd_evict_bo_worker
1036 */
1037 WARN(debug_evictions, "Scheduling eviction of pid %d in %ld jiffies",
1038 p->lead_thread->pid, delay_jiffies);
1039 schedule_delayed_work(&p->eviction_work, delay_jiffies);
1040out:
1041 kfd_unref_process(p);
1042 return 0;
1043}
1044
1045static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
1046 unsigned int chunk_size)
1047{
1048 unsigned int num_of_longs;
1049
1050 if (WARN_ON(buf_size < chunk_size))
1051 return -EINVAL;
1052 if (WARN_ON(buf_size == 0))
1053 return -EINVAL;
1054 if (WARN_ON(chunk_size == 0))
1055 return -EINVAL;
1056
1057 kfd->gtt_sa_chunk_size = chunk_size;
1058 kfd->gtt_sa_num_of_chunks = buf_size / chunk_size;
1059
1060 num_of_longs = (kfd->gtt_sa_num_of_chunks + BITS_PER_LONG - 1) /
1061 BITS_PER_LONG;
1062
1063 kfd->gtt_sa_bitmap = kcalloc(num_of_longs, sizeof(long), GFP_KERNEL);
1064
1065 if (!kfd->gtt_sa_bitmap)
1066 return -ENOMEM;
1067
1068 pr_debug("gtt_sa_num_of_chunks = %d, gtt_sa_bitmap = %p\n",
1069 kfd->gtt_sa_num_of_chunks, kfd->gtt_sa_bitmap);
1070
1071 mutex_init(&kfd->gtt_sa_lock);
1072
1073 return 0;
1074
1075}
1076
1077static void kfd_gtt_sa_fini(struct kfd_dev *kfd)
1078{
1079 mutex_destroy(&kfd->gtt_sa_lock);
1080 kfree(kfd->gtt_sa_bitmap);
1081}
1082
1083static inline uint64_t kfd_gtt_sa_calc_gpu_addr(uint64_t start_addr,
1084 unsigned int bit_num,
1085 unsigned int chunk_size)
1086{
1087 return start_addr + bit_num * chunk_size;
1088}
1089
1090static inline uint32_t *kfd_gtt_sa_calc_cpu_addr(void *start_addr,
1091 unsigned int bit_num,
1092 unsigned int chunk_size)
1093{
1094 return (uint32_t *) ((uint64_t) start_addr + bit_num * chunk_size);
1095}
1096
1097int kfd_gtt_sa_allocate(struct kfd_dev *kfd, unsigned int size,
1098 struct kfd_mem_obj **mem_obj)
1099{
1100 unsigned int found, start_search, cur_size;
1101
1102 if (size == 0)
1103 return -EINVAL;
1104
1105 if (size > kfd->gtt_sa_num_of_chunks * kfd->gtt_sa_chunk_size)
1106 return -ENOMEM;
1107
1108 *mem_obj = kzalloc(sizeof(struct kfd_mem_obj), GFP_KERNEL);
1109 if (!(*mem_obj))
1110 return -ENOMEM;
1111
1112 pr_debug("Allocated mem_obj = %p for size = %d\n", *mem_obj, size);
1113
1114 start_search = 0;
1115
1116 mutex_lock(&kfd->gtt_sa_lock);
1117
1118kfd_gtt_restart_search:
1119 /* Find the first chunk that is free */
1120 found = find_next_zero_bit(kfd->gtt_sa_bitmap,
1121 kfd->gtt_sa_num_of_chunks,
1122 start_search);
1123
1124 pr_debug("Found = %d\n", found);
1125
1126 /* If there wasn't any free chunk, bail out */
1127 if (found == kfd->gtt_sa_num_of_chunks)
1128 goto kfd_gtt_no_free_chunk;
1129
1130 /* Update fields of mem_obj */
1131 (*mem_obj)->range_start = found;
1132 (*mem_obj)->range_end = found;
1133 (*mem_obj)->gpu_addr = kfd_gtt_sa_calc_gpu_addr(
1134 kfd->gtt_start_gpu_addr,
1135 found,
1136 kfd->gtt_sa_chunk_size);
1137 (*mem_obj)->cpu_ptr = kfd_gtt_sa_calc_cpu_addr(
1138 kfd->gtt_start_cpu_ptr,
1139 found,
1140 kfd->gtt_sa_chunk_size);
1141
1142 pr_debug("gpu_addr = %p, cpu_addr = %p\n",
1143 (uint64_t *) (*mem_obj)->gpu_addr, (*mem_obj)->cpu_ptr);
1144
1145 /* If we need only one chunk, mark it as allocated and get out */
1146 if (size <= kfd->gtt_sa_chunk_size) {
1147 pr_debug("Single bit\n");
1148 set_bit(found, kfd->gtt_sa_bitmap);
1149 goto kfd_gtt_out;
1150 }
1151
1152 /* Otherwise, try to see if we have enough contiguous chunks */
1153 cur_size = size - kfd->gtt_sa_chunk_size;
1154 do {
1155 (*mem_obj)->range_end =
1156 find_next_zero_bit(kfd->gtt_sa_bitmap,
1157 kfd->gtt_sa_num_of_chunks, ++found);
1158 /*
1159 * If next free chunk is not contiguous than we need to
1160 * restart our search from the last free chunk we found (which
1161 * wasn't contiguous to the previous ones
1162 */
1163 if ((*mem_obj)->range_end != found) {
1164 start_search = found;
1165 goto kfd_gtt_restart_search;
1166 }
1167
1168 /*
1169 * If we reached end of buffer, bail out with error
1170 */
1171 if (found == kfd->gtt_sa_num_of_chunks)
1172 goto kfd_gtt_no_free_chunk;
1173
1174 /* Check if we don't need another chunk */
1175 if (cur_size <= kfd->gtt_sa_chunk_size)
1176 cur_size = 0;
1177 else
1178 cur_size -= kfd->gtt_sa_chunk_size;
1179
1180 } while (cur_size > 0);
1181
1182 pr_debug("range_start = %d, range_end = %d\n",
1183 (*mem_obj)->range_start, (*mem_obj)->range_end);
1184
1185 /* Mark the chunks as allocated */
1186 for (found = (*mem_obj)->range_start;
1187 found <= (*mem_obj)->range_end;
1188 found++)
1189 set_bit(found, kfd->gtt_sa_bitmap);
1190
1191kfd_gtt_out:
1192 mutex_unlock(&kfd->gtt_sa_lock);
1193 return 0;
1194
1195kfd_gtt_no_free_chunk:
1196 pr_debug("Allocation failed with mem_obj = %p\n", *mem_obj);
1197 mutex_unlock(&kfd->gtt_sa_lock);
1198 kfree(*mem_obj);
1199 return -ENOMEM;
1200}
1201
1202int kfd_gtt_sa_free(struct kfd_dev *kfd, struct kfd_mem_obj *mem_obj)
1203{
1204 unsigned int bit;
1205
1206 /* Act like kfree when trying to free a NULL object */
1207 if (!mem_obj)
1208 return 0;
1209
1210 pr_debug("Free mem_obj = %p, range_start = %d, range_end = %d\n",
1211 mem_obj, mem_obj->range_start, mem_obj->range_end);
1212
1213 mutex_lock(&kfd->gtt_sa_lock);
1214
1215 /* Mark the chunks as free */
1216 for (bit = mem_obj->range_start;
1217 bit <= mem_obj->range_end;
1218 bit++)
1219 clear_bit(bit, kfd->gtt_sa_bitmap);
1220
1221 mutex_unlock(&kfd->gtt_sa_lock);
1222
1223 kfree(mem_obj);
1224 return 0;
1225}
1226
1227void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd)
1228{
1229 if (kfd)
1230 atomic_inc(&kfd->sram_ecc_flag);
1231}
1232
1233void kfd_inc_compute_active(struct kfd_dev *kfd)
1234{
1235 if (atomic_inc_return(&kfd->compute_profile) == 1)
1236 amdgpu_amdkfd_set_compute_idle(kfd->kgd, false);
1237}
1238
1239void kfd_dec_compute_active(struct kfd_dev *kfd)
1240{
1241 int count = atomic_dec_return(&kfd->compute_profile);
1242
1243 if (count == 0)
1244 amdgpu_amdkfd_set_compute_idle(kfd->kgd, true);
1245 WARN_ONCE(count < 0, "Compute profile ref. count error");
1246}
1247
1248#if defined(CONFIG_DEBUG_FS)
1249
1250/* This function will send a package to HIQ to hang the HWS
1251 * which will trigger a GPU reset and bring the HWS back to normal state
1252 */
1253int kfd_debugfs_hang_hws(struct kfd_dev *dev)
1254{
1255 int r = 0;
1256
1257 if (dev->dqm->sched_policy != KFD_SCHED_POLICY_HWS) {
1258 pr_err("HWS is not enabled");
1259 return -EINVAL;
1260 }
1261
1262 r = pm_debugfs_hang_hws(&dev->dqm->packets);
1263 if (!r)
1264 r = dqm_debugfs_execute_queues(dev->dqm);
1265
1266 return r;
1267}
1268
1269#endif
1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/*
3 * Copyright 2014-2022 Advanced Micro Devices, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24#include <linux/bsearch.h>
25#include <linux/pci.h>
26#include <linux/slab.h>
27#include "kfd_priv.h"
28#include "kfd_device_queue_manager.h"
29#include "kfd_pm4_headers_vi.h"
30#include "kfd_pm4_headers_aldebaran.h"
31#include "cwsr_trap_handler.h"
32#include "kfd_iommu.h"
33#include "amdgpu_amdkfd.h"
34#include "kfd_smi_events.h"
35#include "kfd_migrate.h"
36#include "amdgpu.h"
37
38#define MQD_SIZE_ALIGNED 768
39
40/*
41 * kfd_locked is used to lock the kfd driver during suspend or reset
42 * once locked, kfd driver will stop any further GPU execution.
43 * create process (open) will return -EAGAIN.
44 */
45static atomic_t kfd_locked = ATOMIC_INIT(0);
46
47#ifdef CONFIG_DRM_AMDGPU_CIK
48extern const struct kfd2kgd_calls gfx_v7_kfd2kgd;
49#endif
50extern const struct kfd2kgd_calls gfx_v8_kfd2kgd;
51extern const struct kfd2kgd_calls gfx_v9_kfd2kgd;
52extern const struct kfd2kgd_calls arcturus_kfd2kgd;
53extern const struct kfd2kgd_calls aldebaran_kfd2kgd;
54extern const struct kfd2kgd_calls gfx_v10_kfd2kgd;
55extern const struct kfd2kgd_calls gfx_v10_3_kfd2kgd;
56extern const struct kfd2kgd_calls gfx_v11_kfd2kgd;
57
58static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
59 unsigned int chunk_size);
60static void kfd_gtt_sa_fini(struct kfd_dev *kfd);
61
62static int kfd_resume(struct kfd_dev *kfd);
63
64static void kfd_device_info_set_sdma_info(struct kfd_dev *kfd)
65{
66 uint32_t sdma_version = kfd->adev->ip_versions[SDMA0_HWIP][0];
67
68 switch (sdma_version) {
69 case IP_VERSION(4, 0, 0):/* VEGA10 */
70 case IP_VERSION(4, 0, 1):/* VEGA12 */
71 case IP_VERSION(4, 1, 0):/* RAVEN */
72 case IP_VERSION(4, 1, 1):/* RAVEN */
73 case IP_VERSION(4, 1, 2):/* RENOIR */
74 case IP_VERSION(5, 2, 1):/* VANGOGH */
75 case IP_VERSION(5, 2, 3):/* YELLOW_CARP */
76 case IP_VERSION(5, 2, 6):/* GC 10.3.6 */
77 case IP_VERSION(5, 2, 7):/* GC 10.3.7 */
78 kfd->device_info.num_sdma_queues_per_engine = 2;
79 break;
80 case IP_VERSION(4, 2, 0):/* VEGA20 */
81 case IP_VERSION(4, 2, 2):/* ARCTURUS */
82 case IP_VERSION(4, 4, 0):/* ALDEBARAN */
83 case IP_VERSION(5, 0, 0):/* NAVI10 */
84 case IP_VERSION(5, 0, 1):/* CYAN_SKILLFISH */
85 case IP_VERSION(5, 0, 2):/* NAVI14 */
86 case IP_VERSION(5, 0, 5):/* NAVI12 */
87 case IP_VERSION(5, 2, 0):/* SIENNA_CICHLID */
88 case IP_VERSION(5, 2, 2):/* NAVY_FLOUNDER */
89 case IP_VERSION(5, 2, 4):/* DIMGREY_CAVEFISH */
90 case IP_VERSION(5, 2, 5):/* BEIGE_GOBY */
91 case IP_VERSION(6, 0, 0):
92 case IP_VERSION(6, 0, 1):
93 case IP_VERSION(6, 0, 2):
94 case IP_VERSION(6, 0, 3):
95 kfd->device_info.num_sdma_queues_per_engine = 8;
96 break;
97 default:
98 dev_warn(kfd_device,
99 "Default sdma queue per engine(8) is set due to mismatch of sdma ip block(SDMA_HWIP:0x%x).\n",
100 sdma_version);
101 kfd->device_info.num_sdma_queues_per_engine = 8;
102 }
103
104 switch (sdma_version) {
105 case IP_VERSION(6, 0, 0):
106 case IP_VERSION(6, 0, 2):
107 case IP_VERSION(6, 0, 3):
108 /* Reserve 1 for paging and 1 for gfx */
109 kfd->device_info.num_reserved_sdma_queues_per_engine = 2;
110 /* BIT(0)=engine-0 queue-0; BIT(1)=engine-1 queue-0; BIT(2)=engine-0 queue-1; ... */
111 kfd->device_info.reserved_sdma_queues_bitmap = 0xFULL;
112 break;
113 case IP_VERSION(6, 0, 1):
114 /* Reserve 1 for paging and 1 for gfx */
115 kfd->device_info.num_reserved_sdma_queues_per_engine = 2;
116 /* BIT(0)=engine-0 queue-0; BIT(1)=engine-0 queue-1; ... */
117 kfd->device_info.reserved_sdma_queues_bitmap = 0x3ULL;
118 break;
119 default:
120 break;
121 }
122}
123
124static void kfd_device_info_set_event_interrupt_class(struct kfd_dev *kfd)
125{
126 uint32_t gc_version = KFD_GC_VERSION(kfd);
127
128 switch (gc_version) {
129 case IP_VERSION(9, 0, 1): /* VEGA10 */
130 case IP_VERSION(9, 1, 0): /* RAVEN */
131 case IP_VERSION(9, 2, 1): /* VEGA12 */
132 case IP_VERSION(9, 2, 2): /* RAVEN */
133 case IP_VERSION(9, 3, 0): /* RENOIR */
134 case IP_VERSION(9, 4, 0): /* VEGA20 */
135 case IP_VERSION(9, 4, 1): /* ARCTURUS */
136 case IP_VERSION(9, 4, 2): /* ALDEBARAN */
137 case IP_VERSION(10, 3, 1): /* VANGOGH */
138 case IP_VERSION(10, 3, 3): /* YELLOW_CARP */
139 case IP_VERSION(10, 3, 6): /* GC 10.3.6 */
140 case IP_VERSION(10, 3, 7): /* GC 10.3.7 */
141 case IP_VERSION(10, 1, 3): /* CYAN_SKILLFISH */
142 case IP_VERSION(10, 1, 4):
143 case IP_VERSION(10, 1, 10): /* NAVI10 */
144 case IP_VERSION(10, 1, 2): /* NAVI12 */
145 case IP_VERSION(10, 1, 1): /* NAVI14 */
146 case IP_VERSION(10, 3, 0): /* SIENNA_CICHLID */
147 case IP_VERSION(10, 3, 2): /* NAVY_FLOUNDER */
148 case IP_VERSION(10, 3, 4): /* DIMGREY_CAVEFISH */
149 case IP_VERSION(10, 3, 5): /* BEIGE_GOBY */
150 kfd->device_info.event_interrupt_class = &event_interrupt_class_v9;
151 break;
152 case IP_VERSION(11, 0, 0):
153 case IP_VERSION(11, 0, 1):
154 case IP_VERSION(11, 0, 2):
155 case IP_VERSION(11, 0, 3):
156 case IP_VERSION(11, 0, 4):
157 kfd->device_info.event_interrupt_class = &event_interrupt_class_v11;
158 break;
159 default:
160 dev_warn(kfd_device, "v9 event interrupt handler is set due to "
161 "mismatch of gc ip block(GC_HWIP:0x%x).\n", gc_version);
162 kfd->device_info.event_interrupt_class = &event_interrupt_class_v9;
163 }
164}
165
166static void kfd_device_info_init(struct kfd_dev *kfd,
167 bool vf, uint32_t gfx_target_version)
168{
169 uint32_t gc_version = KFD_GC_VERSION(kfd);
170 uint32_t asic_type = kfd->adev->asic_type;
171
172 kfd->device_info.max_pasid_bits = 16;
173 kfd->device_info.max_no_of_hqd = 24;
174 kfd->device_info.num_of_watch_points = 4;
175 kfd->device_info.mqd_size_aligned = MQD_SIZE_ALIGNED;
176 kfd->device_info.gfx_target_version = gfx_target_version;
177
178 if (KFD_IS_SOC15(kfd)) {
179 kfd->device_info.doorbell_size = 8;
180 kfd->device_info.ih_ring_entry_size = 8 * sizeof(uint32_t);
181 kfd->device_info.supports_cwsr = true;
182
183 kfd_device_info_set_sdma_info(kfd);
184
185 kfd_device_info_set_event_interrupt_class(kfd);
186
187 /* Raven */
188 if (gc_version == IP_VERSION(9, 1, 0) ||
189 gc_version == IP_VERSION(9, 2, 2))
190 kfd->device_info.needs_iommu_device = true;
191
192 if (gc_version < IP_VERSION(11, 0, 0)) {
193 /* Navi2x+, Navi1x+ */
194 if (gc_version == IP_VERSION(10, 3, 6))
195 kfd->device_info.no_atomic_fw_version = 14;
196 else if (gc_version == IP_VERSION(10, 3, 7))
197 kfd->device_info.no_atomic_fw_version = 3;
198 else if (gc_version >= IP_VERSION(10, 3, 0))
199 kfd->device_info.no_atomic_fw_version = 92;
200 else if (gc_version >= IP_VERSION(10, 1, 1))
201 kfd->device_info.no_atomic_fw_version = 145;
202
203 /* Navi1x+ */
204 if (gc_version >= IP_VERSION(10, 1, 1))
205 kfd->device_info.needs_pci_atomics = true;
206 }
207 } else {
208 kfd->device_info.doorbell_size = 4;
209 kfd->device_info.ih_ring_entry_size = 4 * sizeof(uint32_t);
210 kfd->device_info.event_interrupt_class = &event_interrupt_class_cik;
211 kfd->device_info.num_sdma_queues_per_engine = 2;
212
213 if (asic_type != CHIP_KAVERI &&
214 asic_type != CHIP_HAWAII &&
215 asic_type != CHIP_TONGA)
216 kfd->device_info.supports_cwsr = true;
217
218 if (asic_type == CHIP_KAVERI ||
219 asic_type == CHIP_CARRIZO)
220 kfd->device_info.needs_iommu_device = true;
221
222 if (asic_type != CHIP_HAWAII && !vf)
223 kfd->device_info.needs_pci_atomics = true;
224 }
225}
226
227struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf)
228{
229 struct kfd_dev *kfd = NULL;
230 const struct kfd2kgd_calls *f2g = NULL;
231 uint32_t gfx_target_version = 0;
232
233 switch (adev->asic_type) {
234#ifdef KFD_SUPPORT_IOMMU_V2
235#ifdef CONFIG_DRM_AMDGPU_CIK
236 case CHIP_KAVERI:
237 gfx_target_version = 70000;
238 if (!vf)
239 f2g = &gfx_v7_kfd2kgd;
240 break;
241#endif
242 case CHIP_CARRIZO:
243 gfx_target_version = 80001;
244 if (!vf)
245 f2g = &gfx_v8_kfd2kgd;
246 break;
247#endif
248#ifdef CONFIG_DRM_AMDGPU_CIK
249 case CHIP_HAWAII:
250 gfx_target_version = 70001;
251 if (!amdgpu_exp_hw_support)
252 pr_info(
253 "KFD support on Hawaii is experimental. See modparam exp_hw_support\n"
254 );
255 else if (!vf)
256 f2g = &gfx_v7_kfd2kgd;
257 break;
258#endif
259 case CHIP_TONGA:
260 gfx_target_version = 80002;
261 if (!vf)
262 f2g = &gfx_v8_kfd2kgd;
263 break;
264 case CHIP_FIJI:
265 gfx_target_version = 80003;
266 f2g = &gfx_v8_kfd2kgd;
267 break;
268 case CHIP_POLARIS10:
269 gfx_target_version = 80003;
270 f2g = &gfx_v8_kfd2kgd;
271 break;
272 case CHIP_POLARIS11:
273 gfx_target_version = 80003;
274 if (!vf)
275 f2g = &gfx_v8_kfd2kgd;
276 break;
277 case CHIP_POLARIS12:
278 gfx_target_version = 80003;
279 if (!vf)
280 f2g = &gfx_v8_kfd2kgd;
281 break;
282 case CHIP_VEGAM:
283 gfx_target_version = 80003;
284 if (!vf)
285 f2g = &gfx_v8_kfd2kgd;
286 break;
287 default:
288 switch (adev->ip_versions[GC_HWIP][0]) {
289 /* Vega 10 */
290 case IP_VERSION(9, 0, 1):
291 gfx_target_version = 90000;
292 f2g = &gfx_v9_kfd2kgd;
293 break;
294#ifdef KFD_SUPPORT_IOMMU_V2
295 /* Raven */
296 case IP_VERSION(9, 1, 0):
297 case IP_VERSION(9, 2, 2):
298 gfx_target_version = 90002;
299 if (!vf)
300 f2g = &gfx_v9_kfd2kgd;
301 break;
302#endif
303 /* Vega12 */
304 case IP_VERSION(9, 2, 1):
305 gfx_target_version = 90004;
306 if (!vf)
307 f2g = &gfx_v9_kfd2kgd;
308 break;
309 /* Renoir */
310 case IP_VERSION(9, 3, 0):
311 gfx_target_version = 90012;
312 if (!vf)
313 f2g = &gfx_v9_kfd2kgd;
314 break;
315 /* Vega20 */
316 case IP_VERSION(9, 4, 0):
317 gfx_target_version = 90006;
318 if (!vf)
319 f2g = &gfx_v9_kfd2kgd;
320 break;
321 /* Arcturus */
322 case IP_VERSION(9, 4, 1):
323 gfx_target_version = 90008;
324 f2g = &arcturus_kfd2kgd;
325 break;
326 /* Aldebaran */
327 case IP_VERSION(9, 4, 2):
328 gfx_target_version = 90010;
329 f2g = &aldebaran_kfd2kgd;
330 break;
331 /* Navi10 */
332 case IP_VERSION(10, 1, 10):
333 gfx_target_version = 100100;
334 if (!vf)
335 f2g = &gfx_v10_kfd2kgd;
336 break;
337 /* Navi12 */
338 case IP_VERSION(10, 1, 2):
339 gfx_target_version = 100101;
340 f2g = &gfx_v10_kfd2kgd;
341 break;
342 /* Navi14 */
343 case IP_VERSION(10, 1, 1):
344 gfx_target_version = 100102;
345 if (!vf)
346 f2g = &gfx_v10_kfd2kgd;
347 break;
348 /* Cyan Skillfish */
349 case IP_VERSION(10, 1, 3):
350 case IP_VERSION(10, 1, 4):
351 gfx_target_version = 100103;
352 if (!vf)
353 f2g = &gfx_v10_kfd2kgd;
354 break;
355 /* Sienna Cichlid */
356 case IP_VERSION(10, 3, 0):
357 gfx_target_version = 100300;
358 f2g = &gfx_v10_3_kfd2kgd;
359 break;
360 /* Navy Flounder */
361 case IP_VERSION(10, 3, 2):
362 gfx_target_version = 100301;
363 f2g = &gfx_v10_3_kfd2kgd;
364 break;
365 /* Van Gogh */
366 case IP_VERSION(10, 3, 1):
367 gfx_target_version = 100303;
368 if (!vf)
369 f2g = &gfx_v10_3_kfd2kgd;
370 break;
371 /* Dimgrey Cavefish */
372 case IP_VERSION(10, 3, 4):
373 gfx_target_version = 100302;
374 f2g = &gfx_v10_3_kfd2kgd;
375 break;
376 /* Beige Goby */
377 case IP_VERSION(10, 3, 5):
378 gfx_target_version = 100304;
379 f2g = &gfx_v10_3_kfd2kgd;
380 break;
381 /* Yellow Carp */
382 case IP_VERSION(10, 3, 3):
383 gfx_target_version = 100305;
384 if (!vf)
385 f2g = &gfx_v10_3_kfd2kgd;
386 break;
387 case IP_VERSION(10, 3, 6):
388 case IP_VERSION(10, 3, 7):
389 gfx_target_version = 100306;
390 if (!vf)
391 f2g = &gfx_v10_3_kfd2kgd;
392 break;
393 case IP_VERSION(11, 0, 0):
394 gfx_target_version = 110000;
395 f2g = &gfx_v11_kfd2kgd;
396 break;
397 case IP_VERSION(11, 0, 1):
398 case IP_VERSION(11, 0, 4):
399 gfx_target_version = 110003;
400 f2g = &gfx_v11_kfd2kgd;
401 break;
402 case IP_VERSION(11, 0, 2):
403 gfx_target_version = 110002;
404 f2g = &gfx_v11_kfd2kgd;
405 break;
406 case IP_VERSION(11, 0, 3):
407 /* Note: Compiler version is 11.0.1 while HW version is 11.0.3 */
408 gfx_target_version = 110001;
409 f2g = &gfx_v11_kfd2kgd;
410 break;
411 default:
412 break;
413 }
414 break;
415 }
416
417 if (!f2g) {
418 if (adev->ip_versions[GC_HWIP][0])
419 dev_err(kfd_device, "GC IP %06x %s not supported in kfd\n",
420 adev->ip_versions[GC_HWIP][0], vf ? "VF" : "");
421 else
422 dev_err(kfd_device, "%s %s not supported in kfd\n",
423 amdgpu_asic_name[adev->asic_type], vf ? "VF" : "");
424 return NULL;
425 }
426
427 kfd = kzalloc(sizeof(*kfd), GFP_KERNEL);
428 if (!kfd)
429 return NULL;
430
431 kfd->adev = adev;
432 kfd_device_info_init(kfd, vf, gfx_target_version);
433 kfd->init_complete = false;
434 kfd->kfd2kgd = f2g;
435 atomic_set(&kfd->compute_profile, 0);
436
437 mutex_init(&kfd->doorbell_mutex);
438 memset(&kfd->doorbell_available_index, 0,
439 sizeof(kfd->doorbell_available_index));
440
441 atomic_set(&kfd->sram_ecc_flag, 0);
442
443 ida_init(&kfd->doorbell_ida);
444
445 return kfd;
446}
447
448static void kfd_cwsr_init(struct kfd_dev *kfd)
449{
450 if (cwsr_enable && kfd->device_info.supports_cwsr) {
451 if (KFD_GC_VERSION(kfd) < IP_VERSION(9, 0, 1)) {
452 BUILD_BUG_ON(sizeof(cwsr_trap_gfx8_hex) > PAGE_SIZE);
453 kfd->cwsr_isa = cwsr_trap_gfx8_hex;
454 kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx8_hex);
455 } else if (KFD_GC_VERSION(kfd) == IP_VERSION(9, 4, 1)) {
456 BUILD_BUG_ON(sizeof(cwsr_trap_arcturus_hex) > PAGE_SIZE);
457 kfd->cwsr_isa = cwsr_trap_arcturus_hex;
458 kfd->cwsr_isa_size = sizeof(cwsr_trap_arcturus_hex);
459 } else if (KFD_GC_VERSION(kfd) == IP_VERSION(9, 4, 2)) {
460 BUILD_BUG_ON(sizeof(cwsr_trap_aldebaran_hex) > PAGE_SIZE);
461 kfd->cwsr_isa = cwsr_trap_aldebaran_hex;
462 kfd->cwsr_isa_size = sizeof(cwsr_trap_aldebaran_hex);
463 } else if (KFD_GC_VERSION(kfd) < IP_VERSION(10, 1, 1)) {
464 BUILD_BUG_ON(sizeof(cwsr_trap_gfx9_hex) > PAGE_SIZE);
465 kfd->cwsr_isa = cwsr_trap_gfx9_hex;
466 kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx9_hex);
467 } else if (KFD_GC_VERSION(kfd) < IP_VERSION(10, 3, 0)) {
468 BUILD_BUG_ON(sizeof(cwsr_trap_nv1x_hex) > PAGE_SIZE);
469 kfd->cwsr_isa = cwsr_trap_nv1x_hex;
470 kfd->cwsr_isa_size = sizeof(cwsr_trap_nv1x_hex);
471 } else if (KFD_GC_VERSION(kfd) < IP_VERSION(11, 0, 0)) {
472 BUILD_BUG_ON(sizeof(cwsr_trap_gfx10_hex) > PAGE_SIZE);
473 kfd->cwsr_isa = cwsr_trap_gfx10_hex;
474 kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx10_hex);
475 } else {
476 BUILD_BUG_ON(sizeof(cwsr_trap_gfx11_hex) > PAGE_SIZE);
477 kfd->cwsr_isa = cwsr_trap_gfx11_hex;
478 kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx11_hex);
479 }
480
481 kfd->cwsr_enabled = true;
482 }
483}
484
485static int kfd_gws_init(struct kfd_dev *kfd)
486{
487 int ret = 0;
488
489 if (kfd->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS)
490 return 0;
491
492 if (hws_gws_support || (KFD_IS_SOC15(kfd) &&
493 ((KFD_GC_VERSION(kfd) == IP_VERSION(9, 0, 1)
494 && kfd->mec2_fw_version >= 0x81b3) ||
495 (KFD_GC_VERSION(kfd) <= IP_VERSION(9, 4, 0)
496 && kfd->mec2_fw_version >= 0x1b3) ||
497 (KFD_GC_VERSION(kfd) == IP_VERSION(9, 4, 1)
498 && kfd->mec2_fw_version >= 0x30) ||
499 (KFD_GC_VERSION(kfd) == IP_VERSION(9, 4, 2)
500 && kfd->mec2_fw_version >= 0x28) ||
501 (KFD_GC_VERSION(kfd) >= IP_VERSION(10, 3, 0)
502 && KFD_GC_VERSION(kfd) < IP_VERSION(11, 0, 0)
503 && kfd->mec2_fw_version >= 0x6b))))
504 ret = amdgpu_amdkfd_alloc_gws(kfd->adev,
505 kfd->adev->gds.gws_size, &kfd->gws);
506
507 return ret;
508}
509
510static void kfd_smi_init(struct kfd_dev *dev)
511{
512 INIT_LIST_HEAD(&dev->smi_clients);
513 spin_lock_init(&dev->smi_lock);
514}
515
516bool kgd2kfd_device_init(struct kfd_dev *kfd,
517 const struct kgd2kfd_shared_resources *gpu_resources)
518{
519 unsigned int size, map_process_packet_size;
520
521 kfd->mec_fw_version = amdgpu_amdkfd_get_fw_version(kfd->adev,
522 KGD_ENGINE_MEC1);
523 kfd->mec2_fw_version = amdgpu_amdkfd_get_fw_version(kfd->adev,
524 KGD_ENGINE_MEC2);
525 kfd->sdma_fw_version = amdgpu_amdkfd_get_fw_version(kfd->adev,
526 KGD_ENGINE_SDMA1);
527 kfd->shared_resources = *gpu_resources;
528
529 kfd->vm_info.first_vmid_kfd = ffs(gpu_resources->compute_vmid_bitmap)-1;
530 kfd->vm_info.last_vmid_kfd = fls(gpu_resources->compute_vmid_bitmap)-1;
531 kfd->vm_info.vmid_num_kfd = kfd->vm_info.last_vmid_kfd
532 - kfd->vm_info.first_vmid_kfd + 1;
533
534 /* Allow BIF to recode atomics to PCIe 3.0 AtomicOps.
535 * 32 and 64-bit requests are possible and must be
536 * supported.
537 */
538 kfd->pci_atomic_requested = amdgpu_amdkfd_have_atomics_support(kfd->adev);
539 if (!kfd->pci_atomic_requested &&
540 kfd->device_info.needs_pci_atomics &&
541 (!kfd->device_info.no_atomic_fw_version ||
542 kfd->mec_fw_version < kfd->device_info.no_atomic_fw_version)) {
543 dev_info(kfd_device,
544 "skipped device %x:%x, PCI rejects atomics %d<%d\n",
545 kfd->adev->pdev->vendor, kfd->adev->pdev->device,
546 kfd->mec_fw_version,
547 kfd->device_info.no_atomic_fw_version);
548 return false;
549 }
550
551 /* Verify module parameters regarding mapped process number*/
552 if (hws_max_conc_proc >= 0)
553 kfd->max_proc_per_quantum = min((u32)hws_max_conc_proc, kfd->vm_info.vmid_num_kfd);
554 else
555 kfd->max_proc_per_quantum = kfd->vm_info.vmid_num_kfd;
556
557 /* calculate max size of mqds needed for queues */
558 size = max_num_of_queues_per_device *
559 kfd->device_info.mqd_size_aligned;
560
561 /*
562 * calculate max size of runlist packet.
563 * There can be only 2 packets at once
564 */
565 map_process_packet_size = KFD_GC_VERSION(kfd) == IP_VERSION(9, 4, 2) ?
566 sizeof(struct pm4_mes_map_process_aldebaran) :
567 sizeof(struct pm4_mes_map_process);
568 size += (KFD_MAX_NUM_OF_PROCESSES * map_process_packet_size +
569 max_num_of_queues_per_device * sizeof(struct pm4_mes_map_queues)
570 + sizeof(struct pm4_mes_runlist)) * 2;
571
572 /* Add size of HIQ & DIQ */
573 size += KFD_KERNEL_QUEUE_SIZE * 2;
574
575 /* add another 512KB for all other allocations on gart (HPD, fences) */
576 size += 512 * 1024;
577
578 if (amdgpu_amdkfd_alloc_gtt_mem(
579 kfd->adev, size, &kfd->gtt_mem,
580 &kfd->gtt_start_gpu_addr, &kfd->gtt_start_cpu_ptr,
581 false)) {
582 dev_err(kfd_device, "Could not allocate %d bytes\n", size);
583 goto alloc_gtt_mem_failure;
584 }
585
586 dev_info(kfd_device, "Allocated %d bytes on gart\n", size);
587
588 /* Initialize GTT sa with 512 byte chunk size */
589 if (kfd_gtt_sa_init(kfd, size, 512) != 0) {
590 dev_err(kfd_device, "Error initializing gtt sub-allocator\n");
591 goto kfd_gtt_sa_init_error;
592 }
593
594 if (kfd_doorbell_init(kfd)) {
595 dev_err(kfd_device,
596 "Error initializing doorbell aperture\n");
597 goto kfd_doorbell_error;
598 }
599
600 if (amdgpu_use_xgmi_p2p)
601 kfd->hive_id = kfd->adev->gmc.xgmi.hive_id;
602
603 kfd->noretry = kfd->adev->gmc.noretry;
604
605 if (kfd_interrupt_init(kfd)) {
606 dev_err(kfd_device, "Error initializing interrupts\n");
607 goto kfd_interrupt_error;
608 }
609
610 kfd->dqm = device_queue_manager_init(kfd);
611 if (!kfd->dqm) {
612 dev_err(kfd_device, "Error initializing queue manager\n");
613 goto device_queue_manager_error;
614 }
615
616 /* If supported on this device, allocate global GWS that is shared
617 * by all KFD processes
618 */
619 if (kfd_gws_init(kfd)) {
620 dev_err(kfd_device, "Could not allocate %d gws\n",
621 kfd->adev->gds.gws_size);
622 goto gws_error;
623 }
624
625 /* If CRAT is broken, won't set iommu enabled */
626 kfd_double_confirm_iommu_support(kfd);
627
628 if (kfd_iommu_device_init(kfd)) {
629 kfd->use_iommu_v2 = false;
630 dev_err(kfd_device, "Error initializing iommuv2\n");
631 goto device_iommu_error;
632 }
633
634 kfd_cwsr_init(kfd);
635
636 svm_migrate_init(kfd->adev);
637
638 if (kgd2kfd_resume_iommu(kfd))
639 goto device_iommu_error;
640
641 if (kfd_resume(kfd))
642 goto kfd_resume_error;
643
644 amdgpu_amdkfd_get_local_mem_info(kfd->adev, &kfd->local_mem_info);
645
646 if (kfd_topology_add_device(kfd)) {
647 dev_err(kfd_device, "Error adding device to topology\n");
648 goto kfd_topology_add_device_error;
649 }
650
651 kfd_smi_init(kfd);
652
653 kfd->init_complete = true;
654 dev_info(kfd_device, "added device %x:%x\n", kfd->adev->pdev->vendor,
655 kfd->adev->pdev->device);
656
657 pr_debug("Starting kfd with the following scheduling policy %d\n",
658 kfd->dqm->sched_policy);
659
660 goto out;
661
662kfd_topology_add_device_error:
663kfd_resume_error:
664device_iommu_error:
665gws_error:
666 device_queue_manager_uninit(kfd->dqm);
667device_queue_manager_error:
668 kfd_interrupt_exit(kfd);
669kfd_interrupt_error:
670 kfd_doorbell_fini(kfd);
671kfd_doorbell_error:
672 kfd_gtt_sa_fini(kfd);
673kfd_gtt_sa_init_error:
674 amdgpu_amdkfd_free_gtt_mem(kfd->adev, kfd->gtt_mem);
675alloc_gtt_mem_failure:
676 if (kfd->gws)
677 amdgpu_amdkfd_free_gws(kfd->adev, kfd->gws);
678 dev_err(kfd_device,
679 "device %x:%x NOT added due to errors\n",
680 kfd->adev->pdev->vendor, kfd->adev->pdev->device);
681out:
682 return kfd->init_complete;
683}
684
685void kgd2kfd_device_exit(struct kfd_dev *kfd)
686{
687 if (kfd->init_complete) {
688 device_queue_manager_uninit(kfd->dqm);
689 kfd_interrupt_exit(kfd);
690 kfd_topology_remove_device(kfd);
691 kfd_doorbell_fini(kfd);
692 ida_destroy(&kfd->doorbell_ida);
693 kfd_gtt_sa_fini(kfd);
694 amdgpu_amdkfd_free_gtt_mem(kfd->adev, kfd->gtt_mem);
695 if (kfd->gws)
696 amdgpu_amdkfd_free_gws(kfd->adev, kfd->gws);
697 }
698
699 kfree(kfd);
700}
701
702int kgd2kfd_pre_reset(struct kfd_dev *kfd)
703{
704 if (!kfd->init_complete)
705 return 0;
706
707 kfd_smi_event_update_gpu_reset(kfd, false);
708
709 kfd->dqm->ops.pre_reset(kfd->dqm);
710
711 kgd2kfd_suspend(kfd, false);
712
713 kfd_signal_reset_event(kfd);
714 return 0;
715}
716
717/*
718 * Fix me. KFD won't be able to resume existing process for now.
719 * We will keep all existing process in a evicted state and
720 * wait the process to be terminated.
721 */
722
723int kgd2kfd_post_reset(struct kfd_dev *kfd)
724{
725 int ret;
726
727 if (!kfd->init_complete)
728 return 0;
729
730 ret = kfd_resume(kfd);
731 if (ret)
732 return ret;
733 atomic_dec(&kfd_locked);
734
735 atomic_set(&kfd->sram_ecc_flag, 0);
736
737 kfd_smi_event_update_gpu_reset(kfd, true);
738
739 return 0;
740}
741
742bool kfd_is_locked(void)
743{
744 return (atomic_read(&kfd_locked) > 0);
745}
746
747void kgd2kfd_suspend(struct kfd_dev *kfd, bool run_pm)
748{
749 if (!kfd->init_complete)
750 return;
751
752 /* for runtime suspend, skip locking kfd */
753 if (!run_pm) {
754 /* For first KFD device suspend all the KFD processes */
755 if (atomic_inc_return(&kfd_locked) == 1)
756 kfd_suspend_all_processes();
757 }
758
759 kfd->dqm->ops.stop(kfd->dqm);
760 kfd_iommu_suspend(kfd);
761}
762
763int kgd2kfd_resume(struct kfd_dev *kfd, bool run_pm)
764{
765 int ret, count;
766
767 if (!kfd->init_complete)
768 return 0;
769
770 ret = kfd_resume(kfd);
771 if (ret)
772 return ret;
773
774 /* for runtime resume, skip unlocking kfd */
775 if (!run_pm) {
776 count = atomic_dec_return(&kfd_locked);
777 WARN_ONCE(count < 0, "KFD suspend / resume ref. error");
778 if (count == 0)
779 ret = kfd_resume_all_processes();
780 }
781
782 return ret;
783}
784
785int kgd2kfd_resume_iommu(struct kfd_dev *kfd)
786{
787 int err = 0;
788
789 err = kfd_iommu_resume(kfd);
790 if (err)
791 dev_err(kfd_device,
792 "Failed to resume IOMMU for device %x:%x\n",
793 kfd->adev->pdev->vendor, kfd->adev->pdev->device);
794 return err;
795}
796
797static int kfd_resume(struct kfd_dev *kfd)
798{
799 int err = 0;
800
801 err = kfd->dqm->ops.start(kfd->dqm);
802 if (err)
803 dev_err(kfd_device,
804 "Error starting queue manager for device %x:%x\n",
805 kfd->adev->pdev->vendor, kfd->adev->pdev->device);
806
807 return err;
808}
809
810static inline void kfd_queue_work(struct workqueue_struct *wq,
811 struct work_struct *work)
812{
813 int cpu, new_cpu;
814
815 cpu = new_cpu = smp_processor_id();
816 do {
817 new_cpu = cpumask_next(new_cpu, cpu_online_mask) % nr_cpu_ids;
818 if (cpu_to_node(new_cpu) == numa_node_id())
819 break;
820 } while (cpu != new_cpu);
821
822 queue_work_on(new_cpu, wq, work);
823}
824
825/* This is called directly from KGD at ISR. */
826void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry)
827{
828 uint32_t patched_ihre[KFD_MAX_RING_ENTRY_SIZE];
829 bool is_patched = false;
830 unsigned long flags;
831
832 if (!kfd->init_complete)
833 return;
834
835 if (kfd->device_info.ih_ring_entry_size > sizeof(patched_ihre)) {
836 dev_err_once(kfd_device, "Ring entry too small\n");
837 return;
838 }
839
840 spin_lock_irqsave(&kfd->interrupt_lock, flags);
841
842 if (kfd->interrupts_active
843 && interrupt_is_wanted(kfd, ih_ring_entry,
844 patched_ihre, &is_patched)
845 && enqueue_ih_ring_entry(kfd,
846 is_patched ? patched_ihre : ih_ring_entry))
847 kfd_queue_work(kfd->ih_wq, &kfd->interrupt_work);
848
849 spin_unlock_irqrestore(&kfd->interrupt_lock, flags);
850}
851
852int kgd2kfd_quiesce_mm(struct mm_struct *mm, uint32_t trigger)
853{
854 struct kfd_process *p;
855 int r;
856
857 /* Because we are called from arbitrary context (workqueue) as opposed
858 * to process context, kfd_process could attempt to exit while we are
859 * running so the lookup function increments the process ref count.
860 */
861 p = kfd_lookup_process_by_mm(mm);
862 if (!p)
863 return -ESRCH;
864
865 WARN(debug_evictions, "Evicting pid %d", p->lead_thread->pid);
866 r = kfd_process_evict_queues(p, trigger);
867
868 kfd_unref_process(p);
869 return r;
870}
871
872int kgd2kfd_resume_mm(struct mm_struct *mm)
873{
874 struct kfd_process *p;
875 int r;
876
877 /* Because we are called from arbitrary context (workqueue) as opposed
878 * to process context, kfd_process could attempt to exit while we are
879 * running so the lookup function increments the process ref count.
880 */
881 p = kfd_lookup_process_by_mm(mm);
882 if (!p)
883 return -ESRCH;
884
885 r = kfd_process_restore_queues(p);
886
887 kfd_unref_process(p);
888 return r;
889}
890
891/** kgd2kfd_schedule_evict_and_restore_process - Schedules work queue that will
892 * prepare for safe eviction of KFD BOs that belong to the specified
893 * process.
894 *
895 * @mm: mm_struct that identifies the specified KFD process
896 * @fence: eviction fence attached to KFD process BOs
897 *
898 */
899int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm,
900 struct dma_fence *fence)
901{
902 struct kfd_process *p;
903 unsigned long active_time;
904 unsigned long delay_jiffies = msecs_to_jiffies(PROCESS_ACTIVE_TIME_MS);
905
906 if (!fence)
907 return -EINVAL;
908
909 if (dma_fence_is_signaled(fence))
910 return 0;
911
912 p = kfd_lookup_process_by_mm(mm);
913 if (!p)
914 return -ENODEV;
915
916 if (fence->seqno == p->last_eviction_seqno)
917 goto out;
918
919 p->last_eviction_seqno = fence->seqno;
920
921 /* Avoid KFD process starvation. Wait for at least
922 * PROCESS_ACTIVE_TIME_MS before evicting the process again
923 */
924 active_time = get_jiffies_64() - p->last_restore_timestamp;
925 if (delay_jiffies > active_time)
926 delay_jiffies -= active_time;
927 else
928 delay_jiffies = 0;
929
930 /* During process initialization eviction_work.dwork is initialized
931 * to kfd_evict_bo_worker
932 */
933 WARN(debug_evictions, "Scheduling eviction of pid %d in %ld jiffies",
934 p->lead_thread->pid, delay_jiffies);
935 schedule_delayed_work(&p->eviction_work, delay_jiffies);
936out:
937 kfd_unref_process(p);
938 return 0;
939}
940
941static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
942 unsigned int chunk_size)
943{
944 if (WARN_ON(buf_size < chunk_size))
945 return -EINVAL;
946 if (WARN_ON(buf_size == 0))
947 return -EINVAL;
948 if (WARN_ON(chunk_size == 0))
949 return -EINVAL;
950
951 kfd->gtt_sa_chunk_size = chunk_size;
952 kfd->gtt_sa_num_of_chunks = buf_size / chunk_size;
953
954 kfd->gtt_sa_bitmap = bitmap_zalloc(kfd->gtt_sa_num_of_chunks,
955 GFP_KERNEL);
956 if (!kfd->gtt_sa_bitmap)
957 return -ENOMEM;
958
959 pr_debug("gtt_sa_num_of_chunks = %d, gtt_sa_bitmap = %p\n",
960 kfd->gtt_sa_num_of_chunks, kfd->gtt_sa_bitmap);
961
962 mutex_init(&kfd->gtt_sa_lock);
963
964 return 0;
965}
966
967static void kfd_gtt_sa_fini(struct kfd_dev *kfd)
968{
969 mutex_destroy(&kfd->gtt_sa_lock);
970 bitmap_free(kfd->gtt_sa_bitmap);
971}
972
973static inline uint64_t kfd_gtt_sa_calc_gpu_addr(uint64_t start_addr,
974 unsigned int bit_num,
975 unsigned int chunk_size)
976{
977 return start_addr + bit_num * chunk_size;
978}
979
980static inline uint32_t *kfd_gtt_sa_calc_cpu_addr(void *start_addr,
981 unsigned int bit_num,
982 unsigned int chunk_size)
983{
984 return (uint32_t *) ((uint64_t) start_addr + bit_num * chunk_size);
985}
986
987int kfd_gtt_sa_allocate(struct kfd_dev *kfd, unsigned int size,
988 struct kfd_mem_obj **mem_obj)
989{
990 unsigned int found, start_search, cur_size;
991
992 if (size == 0)
993 return -EINVAL;
994
995 if (size > kfd->gtt_sa_num_of_chunks * kfd->gtt_sa_chunk_size)
996 return -ENOMEM;
997
998 *mem_obj = kzalloc(sizeof(struct kfd_mem_obj), GFP_KERNEL);
999 if (!(*mem_obj))
1000 return -ENOMEM;
1001
1002 pr_debug("Allocated mem_obj = %p for size = %d\n", *mem_obj, size);
1003
1004 start_search = 0;
1005
1006 mutex_lock(&kfd->gtt_sa_lock);
1007
1008kfd_gtt_restart_search:
1009 /* Find the first chunk that is free */
1010 found = find_next_zero_bit(kfd->gtt_sa_bitmap,
1011 kfd->gtt_sa_num_of_chunks,
1012 start_search);
1013
1014 pr_debug("Found = %d\n", found);
1015
1016 /* If there wasn't any free chunk, bail out */
1017 if (found == kfd->gtt_sa_num_of_chunks)
1018 goto kfd_gtt_no_free_chunk;
1019
1020 /* Update fields of mem_obj */
1021 (*mem_obj)->range_start = found;
1022 (*mem_obj)->range_end = found;
1023 (*mem_obj)->gpu_addr = kfd_gtt_sa_calc_gpu_addr(
1024 kfd->gtt_start_gpu_addr,
1025 found,
1026 kfd->gtt_sa_chunk_size);
1027 (*mem_obj)->cpu_ptr = kfd_gtt_sa_calc_cpu_addr(
1028 kfd->gtt_start_cpu_ptr,
1029 found,
1030 kfd->gtt_sa_chunk_size);
1031
1032 pr_debug("gpu_addr = %p, cpu_addr = %p\n",
1033 (uint64_t *) (*mem_obj)->gpu_addr, (*mem_obj)->cpu_ptr);
1034
1035 /* If we need only one chunk, mark it as allocated and get out */
1036 if (size <= kfd->gtt_sa_chunk_size) {
1037 pr_debug("Single bit\n");
1038 __set_bit(found, kfd->gtt_sa_bitmap);
1039 goto kfd_gtt_out;
1040 }
1041
1042 /* Otherwise, try to see if we have enough contiguous chunks */
1043 cur_size = size - kfd->gtt_sa_chunk_size;
1044 do {
1045 (*mem_obj)->range_end =
1046 find_next_zero_bit(kfd->gtt_sa_bitmap,
1047 kfd->gtt_sa_num_of_chunks, ++found);
1048 /*
1049 * If next free chunk is not contiguous than we need to
1050 * restart our search from the last free chunk we found (which
1051 * wasn't contiguous to the previous ones
1052 */
1053 if ((*mem_obj)->range_end != found) {
1054 start_search = found;
1055 goto kfd_gtt_restart_search;
1056 }
1057
1058 /*
1059 * If we reached end of buffer, bail out with error
1060 */
1061 if (found == kfd->gtt_sa_num_of_chunks)
1062 goto kfd_gtt_no_free_chunk;
1063
1064 /* Check if we don't need another chunk */
1065 if (cur_size <= kfd->gtt_sa_chunk_size)
1066 cur_size = 0;
1067 else
1068 cur_size -= kfd->gtt_sa_chunk_size;
1069
1070 } while (cur_size > 0);
1071
1072 pr_debug("range_start = %d, range_end = %d\n",
1073 (*mem_obj)->range_start, (*mem_obj)->range_end);
1074
1075 /* Mark the chunks as allocated */
1076 bitmap_set(kfd->gtt_sa_bitmap, (*mem_obj)->range_start,
1077 (*mem_obj)->range_end - (*mem_obj)->range_start + 1);
1078
1079kfd_gtt_out:
1080 mutex_unlock(&kfd->gtt_sa_lock);
1081 return 0;
1082
1083kfd_gtt_no_free_chunk:
1084 pr_debug("Allocation failed with mem_obj = %p\n", *mem_obj);
1085 mutex_unlock(&kfd->gtt_sa_lock);
1086 kfree(*mem_obj);
1087 return -ENOMEM;
1088}
1089
1090int kfd_gtt_sa_free(struct kfd_dev *kfd, struct kfd_mem_obj *mem_obj)
1091{
1092 /* Act like kfree when trying to free a NULL object */
1093 if (!mem_obj)
1094 return 0;
1095
1096 pr_debug("Free mem_obj = %p, range_start = %d, range_end = %d\n",
1097 mem_obj, mem_obj->range_start, mem_obj->range_end);
1098
1099 mutex_lock(&kfd->gtt_sa_lock);
1100
1101 /* Mark the chunks as free */
1102 bitmap_clear(kfd->gtt_sa_bitmap, mem_obj->range_start,
1103 mem_obj->range_end - mem_obj->range_start + 1);
1104
1105 mutex_unlock(&kfd->gtt_sa_lock);
1106
1107 kfree(mem_obj);
1108 return 0;
1109}
1110
1111void kgd2kfd_set_sram_ecc_flag(struct kfd_dev *kfd)
1112{
1113 if (kfd)
1114 atomic_inc(&kfd->sram_ecc_flag);
1115}
1116
1117void kfd_inc_compute_active(struct kfd_dev *kfd)
1118{
1119 if (atomic_inc_return(&kfd->compute_profile) == 1)
1120 amdgpu_amdkfd_set_compute_idle(kfd->adev, false);
1121}
1122
1123void kfd_dec_compute_active(struct kfd_dev *kfd)
1124{
1125 int count = atomic_dec_return(&kfd->compute_profile);
1126
1127 if (count == 0)
1128 amdgpu_amdkfd_set_compute_idle(kfd->adev, true);
1129 WARN_ONCE(count < 0, "Compute profile ref. count error");
1130}
1131
1132void kgd2kfd_smi_event_throttle(struct kfd_dev *kfd, uint64_t throttle_bitmask)
1133{
1134 if (kfd && kfd->init_complete)
1135 kfd_smi_event_update_thermal_throttling(kfd, throttle_bitmask);
1136}
1137
1138/* kfd_get_num_sdma_engines returns the number of PCIe optimized SDMA and
1139 * kfd_get_num_xgmi_sdma_engines returns the number of XGMI SDMA.
1140 * When the device has more than two engines, we reserve two for PCIe to enable
1141 * full-duplex and the rest are used as XGMI.
1142 */
1143unsigned int kfd_get_num_sdma_engines(struct kfd_dev *kdev)
1144{
1145 /* If XGMI is not supported, all SDMA engines are PCIe */
1146 if (!kdev->adev->gmc.xgmi.supported)
1147 return kdev->adev->sdma.num_instances;
1148
1149 return min(kdev->adev->sdma.num_instances, 2);
1150}
1151
1152unsigned int kfd_get_num_xgmi_sdma_engines(struct kfd_dev *kdev)
1153{
1154 /* After reserved for PCIe, the rest of engines are XGMI */
1155 return kdev->adev->sdma.num_instances - kfd_get_num_sdma_engines(kdev);
1156}
1157
1158#if defined(CONFIG_DEBUG_FS)
1159
1160/* This function will send a package to HIQ to hang the HWS
1161 * which will trigger a GPU reset and bring the HWS back to normal state
1162 */
1163int kfd_debugfs_hang_hws(struct kfd_dev *dev)
1164{
1165 if (dev->dqm->sched_policy != KFD_SCHED_POLICY_HWS) {
1166 pr_err("HWS is not enabled");
1167 return -EINVAL;
1168 }
1169
1170 return dqm_debugfs_hang_hws(dev->dqm);
1171}
1172
1173#endif