1/*
2 * Copyright 2021 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
24#include "aldebaran.h"
25#include "amdgpu_reset.h"
26#include "amdgpu_amdkfd.h"
27#include "amdgpu_dpm.h"
28#include "amdgpu_job.h"
29#include "amdgpu_ring.h"
30#include "amdgpu_ras.h"
31#include "amdgpu_psp.h"
32#include "amdgpu_xgmi.h"
33
34static bool aldebaran_is_mode2_default(struct amdgpu_reset_control *reset_ctl)
35{
36 struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
37
38 if ((amdgpu_ip_version(adev, ip: MP1_HWIP, inst: 0) == IP_VERSION(13, 0, 2) &&
39 adev->gmc.xgmi.connected_to_cpu))
40 return true;
41
42 return false;
43}
44
45static struct amdgpu_reset_handler *
46aldebaran_get_reset_handler(struct amdgpu_reset_control *reset_ctl,
47 struct amdgpu_reset_context *reset_context)
48{
49 struct amdgpu_reset_handler *handler;
50 struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
51 int i;
52
53 if (reset_context->method == AMD_RESET_METHOD_NONE) {
54 if (aldebaran_is_mode2_default(reset_ctl))
55 reset_context->method = AMD_RESET_METHOD_MODE2;
56 else
57 reset_context->method = amdgpu_asic_reset_method(adev);
58 }
59
60 if (reset_context->method != AMD_RESET_METHOD_NONE) {
61 dev_dbg(adev->dev, "Getting reset handler for method %d\n",
62 reset_context->method);
63 for_each_handler(i, handler, reset_ctl) {
64 if (handler->reset_method == reset_context->method)
65 return handler;
66 }
67 }
68
69 dev_dbg(adev->dev, "Reset handler not found!\n");
70
71 return NULL;
72}
73
74static inline uint32_t aldebaran_get_ip_block_mask(struct amdgpu_device *adev)
75{
76 uint32_t ip_block_mask = BIT(AMD_IP_BLOCK_TYPE_GFX) |
77 BIT(AMD_IP_BLOCK_TYPE_SDMA);
78
79 if (adev->aid_mask)
80 ip_block_mask |= BIT(AMD_IP_BLOCK_TYPE_IH);
81
82 return ip_block_mask;
83}
84
85static int aldebaran_mode2_suspend_ip(struct amdgpu_device *adev)
86{
87 uint32_t ip_block_mask = aldebaran_get_ip_block_mask(adev);
88 uint32_t ip_block;
89 int r, i;
90
91 /* Skip suspend of SDMA IP versions >= 4.4.2. They are multi-aid */
92 if (adev->aid_mask)
93 ip_block_mask &= ~BIT(AMD_IP_BLOCK_TYPE_SDMA);
94
95 amdgpu_device_set_pg_state(adev, state: AMD_PG_STATE_UNGATE);
96 amdgpu_device_set_cg_state(adev, state: AMD_CG_STATE_UNGATE);
97
98 for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
99 ip_block = BIT(adev->ip_blocks[i].version->type);
100 if (!(ip_block_mask & ip_block))
101 continue;
102
103 r = amdgpu_ip_block_suspend(ip_block: &adev->ip_blocks[i]);
104 if (r)
105 return r;
106 }
107
108 return 0;
109}
110
111static int
112aldebaran_mode2_prepare_hwcontext(struct amdgpu_reset_control *reset_ctl,
113 struct amdgpu_reset_context *reset_context)
114{
115 int r = 0;
116 struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
117
118 dev_dbg(adev->dev, "Aldebaran prepare hw context\n");
119 /* Don't suspend on bare metal if we are not going to HW reset the ASIC */
120 if (!amdgpu_sriov_vf(adev))
121 r = aldebaran_mode2_suspend_ip(adev);
122
123 return r;
124}
125
126static void aldebaran_async_reset(struct work_struct *work)
127{
128 struct amdgpu_reset_handler *handler;
129 struct amdgpu_reset_control *reset_ctl =
130 container_of(work, struct amdgpu_reset_control, reset_work);
131 struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
132 int i;
133
134 for_each_handler(i, handler, reset_ctl) {
135 if (handler->reset_method == reset_ctl->active_reset) {
136 dev_dbg(adev->dev, "Resetting device\n");
137 handler->do_reset(adev);
138 break;
139 }
140 }
141}
142
143static int aldebaran_mode2_reset(struct amdgpu_device *adev)
144{
145 /* disable BM */
146 pci_clear_master(dev: adev->pdev);
147 adev->asic_reset_res = amdgpu_dpm_mode2_reset(adev);
148 return adev->asic_reset_res;
149}
150
151static int
152aldebaran_mode2_perform_reset(struct amdgpu_reset_control *reset_ctl,
153 struct amdgpu_reset_context *reset_context)
154{
155 struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
156 struct list_head *reset_device_list = reset_context->reset_device_list;
157 struct amdgpu_device *tmp_adev = NULL;
158 int r = 0;
159
160 dev_dbg(adev->dev, "aldebaran perform hw reset\n");
161
162 if (reset_device_list == NULL)
163 return -EINVAL;
164
165 if (amdgpu_ip_version(adev, ip: MP1_HWIP, inst: 0) == IP_VERSION(13, 0, 2) &&
166 reset_context->hive == NULL) {
167 /* Wrong context, return error */
168 return -EINVAL;
169 }
170
171 list_for_each_entry(tmp_adev, reset_device_list, reset_list) {
172 mutex_lock(&tmp_adev->reset_cntl->reset_lock);
173 tmp_adev->reset_cntl->active_reset = AMD_RESET_METHOD_MODE2;
174 }
175 /*
176 * Mode2 reset doesn't need any sync between nodes in XGMI hive, instead launch
177 * them together so that they can be completed asynchronously on multiple nodes
178 */
179 list_for_each_entry(tmp_adev, reset_device_list, reset_list) {
180 /* For XGMI run all resets in parallel to speed up the process */
181 if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) {
182 if (!queue_work(wq: system_unbound_wq,
183 work: &tmp_adev->reset_cntl->reset_work))
184 r = -EALREADY;
185 } else
186 r = aldebaran_mode2_reset(adev: tmp_adev);
187 if (r) {
188 dev_err(tmp_adev->dev,
189 "ASIC reset failed with error, %d for drm dev, %s",
190 r, adev_to_drm(tmp_adev)->unique);
191 break;
192 }
193 }
194
195 /* For XGMI wait for all resets to complete before proceed */
196 if (!r) {
197 list_for_each_entry(tmp_adev, reset_device_list, reset_list) {
198 if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) {
199 flush_work(work: &tmp_adev->reset_cntl->reset_work);
200 r = tmp_adev->asic_reset_res;
201 if (r)
202 break;
203 }
204 }
205 }
206
207 list_for_each_entry(tmp_adev, reset_device_list, reset_list) {
208 mutex_unlock(lock: &tmp_adev->reset_cntl->reset_lock);
209 tmp_adev->reset_cntl->active_reset = AMD_RESET_METHOD_NONE;
210 }
211
212 return r;
213}
214
215static int aldebaran_mode2_restore_ip(struct amdgpu_device *adev)
216{
217 struct amdgpu_firmware_info *ucode_list[AMDGPU_UCODE_ID_MAXIMUM];
218 uint32_t ip_block_mask = aldebaran_get_ip_block_mask(adev);
219 struct amdgpu_firmware_info *ucode;
220 struct amdgpu_ip_block *cmn_block;
221 struct amdgpu_ip_block *ih_block;
222 int ucode_count = 0;
223 int i, r;
224
225 dev_dbg(adev->dev, "Reloading ucodes after reset\n");
226 for (i = 0; i < adev->firmware.max_ucodes; i++) {
227 ucode = &adev->firmware.ucode[i];
228 if (!ucode->fw)
229 continue;
230 switch (ucode->ucode_id) {
231 case AMDGPU_UCODE_ID_SDMA0:
232 case AMDGPU_UCODE_ID_SDMA1:
233 case AMDGPU_UCODE_ID_SDMA2:
234 case AMDGPU_UCODE_ID_SDMA3:
235 case AMDGPU_UCODE_ID_SDMA4:
236 case AMDGPU_UCODE_ID_SDMA5:
237 case AMDGPU_UCODE_ID_SDMA6:
238 case AMDGPU_UCODE_ID_SDMA7:
239 case AMDGPU_UCODE_ID_CP_MEC1:
240 case AMDGPU_UCODE_ID_CP_MEC1_JT:
241 case AMDGPU_UCODE_ID_RLC_RESTORE_LIST_CNTL:
242 case AMDGPU_UCODE_ID_RLC_RESTORE_LIST_GPM_MEM:
243 case AMDGPU_UCODE_ID_RLC_RESTORE_LIST_SRM_MEM:
244 case AMDGPU_UCODE_ID_RLC_G:
245 ucode_list[ucode_count++] = ucode;
246 break;
247 default:
248 break;
249 }
250 }
251
252 /* Reinit NBIF block */
253 cmn_block =
254 amdgpu_device_ip_get_ip_block(adev, type: AMD_IP_BLOCK_TYPE_COMMON);
255 if (unlikely(!cmn_block)) {
256 dev_err(adev->dev, "Failed to get BIF handle\n");
257 return -EINVAL;
258 }
259 r = amdgpu_ip_block_resume(ip_block: cmn_block);
260 if (r)
261 return r;
262
263 if (ip_block_mask & BIT(AMD_IP_BLOCK_TYPE_IH)) {
264 ih_block = amdgpu_device_ip_get_ip_block(adev,
265 type: AMD_IP_BLOCK_TYPE_IH);
266 if (unlikely(!ih_block)) {
267 dev_err(adev->dev, "Failed to get IH handle\n");
268 return -EINVAL;
269 }
270 r = amdgpu_ip_block_resume(ip_block: ih_block);
271 if (r)
272 return r;
273 }
274
275 /* Reinit GFXHUB */
276 adev->gfxhub.funcs->init(adev);
277 r = adev->gfxhub.funcs->gart_enable(adev);
278 if (r) {
279 dev_err(adev->dev, "GFXHUB gart reenable failed after reset\n");
280 return r;
281 }
282
283 /* Reload GFX firmware */
284 r = psp_load_fw_list(psp: &adev->psp, ucode_list, ucode_count);
285 if (r) {
286 dev_err(adev->dev, "GFX ucode load failed after reset\n");
287 return r;
288 }
289
290 /* Resume RLC, FW needs RLC alive to complete reset process */
291 adev->gfx.rlc.funcs->resume(adev);
292
293 /* Wait for FW reset event complete */
294 r = amdgpu_dpm_wait_for_event(adev, event: SMU_EVENT_RESET_COMPLETE, event_arg: 0);
295 if (r) {
296 dev_err(adev->dev,
297 "Failed to get response from firmware after reset\n");
298 return r;
299 }
300
301 for (i = 0; i < adev->num_ip_blocks; i++) {
302 if (!(adev->ip_blocks[i].version->type ==
303 AMD_IP_BLOCK_TYPE_GFX ||
304 adev->ip_blocks[i].version->type ==
305 AMD_IP_BLOCK_TYPE_SDMA))
306 continue;
307
308 r = amdgpu_ip_block_resume(ip_block: &adev->ip_blocks[i]);
309 if (r)
310 return r;
311 }
312
313 for (i = 0; i < adev->num_ip_blocks; i++) {
314 if (!(adev->ip_blocks[i].version->type ==
315 AMD_IP_BLOCK_TYPE_GFX ||
316 adev->ip_blocks[i].version->type ==
317 AMD_IP_BLOCK_TYPE_SDMA ||
318 adev->ip_blocks[i].version->type ==
319 AMD_IP_BLOCK_TYPE_COMMON))
320 continue;
321
322 if (adev->ip_blocks[i].version->funcs->late_init) {
323 r = adev->ip_blocks[i].version->funcs->late_init(
324 &adev->ip_blocks[i]);
325 if (r) {
326 dev_err(adev->dev,
327 "late_init of IP block <%s> failed %d after reset\n",
328 adev->ip_blocks[i].version->funcs->name,
329 r);
330 return r;
331 }
332 }
333 adev->ip_blocks[i].status.late_initialized = true;
334 }
335
336 amdgpu_device_set_cg_state(adev, state: AMD_CG_STATE_GATE);
337 amdgpu_device_set_pg_state(adev, state: AMD_PG_STATE_GATE);
338
339 return r;
340}
341
342static int
343aldebaran_mode2_restore_hwcontext(struct amdgpu_reset_control *reset_ctl,
344 struct amdgpu_reset_context *reset_context)
345{
346 struct list_head *reset_device_list = reset_context->reset_device_list;
347 struct amdgpu_device *tmp_adev = NULL;
348 struct amdgpu_ras *con;
349 int r;
350
351 if (reset_device_list == NULL)
352 return -EINVAL;
353
354 if (amdgpu_ip_version(adev: reset_context->reset_req_dev, ip: MP1_HWIP, inst: 0) ==
355 IP_VERSION(13, 0, 2) &&
356 reset_context->hive == NULL) {
357 /* Wrong context, return error */
358 return -EINVAL;
359 }
360
361 list_for_each_entry(tmp_adev, reset_device_list, reset_list) {
362 amdgpu_set_init_level(adev: tmp_adev,
363 lvl: AMDGPU_INIT_LEVEL_RESET_RECOVERY);
364 dev_info(tmp_adev->dev,
365 "GPU reset succeeded, trying to resume\n");
366 /*TBD: Ideally should clear only GFX, SDMA blocks*/
367 amdgpu_ras_clear_err_state(adev: tmp_adev);
368 r = aldebaran_mode2_restore_ip(adev: tmp_adev);
369 if (r)
370 goto end;
371
372 /*
373 * Add this ASIC as tracked as reset was already
374 * complete successfully.
375 */
376 amdgpu_register_gpu_instance(adev: tmp_adev);
377
378 /* Resume RAS, ecc_irq */
379 con = amdgpu_ras_get_context(adev: tmp_adev);
380 if (!amdgpu_sriov_vf(tmp_adev) && con) {
381 if (tmp_adev->sdma.ras &&
382 tmp_adev->sdma.ras->ras_block.ras_late_init) {
383 r = tmp_adev->sdma.ras->ras_block.ras_late_init(tmp_adev,
384 &tmp_adev->sdma.ras->ras_block.ras_comm);
385 if (r) {
386 dev_err(tmp_adev->dev, "SDMA failed to execute ras_late_init! ret:%d\n", r);
387 goto end;
388 }
389 }
390
391 if (tmp_adev->gfx.ras &&
392 tmp_adev->gfx.ras->ras_block.ras_late_init) {
393 r = tmp_adev->gfx.ras->ras_block.ras_late_init(tmp_adev,
394 &tmp_adev->gfx.ras->ras_block.ras_comm);
395 if (r) {
396 dev_err(tmp_adev->dev, "GFX failed to execute ras_late_init! ret:%d\n", r);
397 goto end;
398 }
399 }
400 }
401
402 amdgpu_ras_resume(adev: tmp_adev);
403
404 /* Update PSP FW topology after reset */
405 if (reset_context->hive &&
406 tmp_adev->gmc.xgmi.num_physical_nodes > 1)
407 r = amdgpu_xgmi_update_topology(hive: reset_context->hive,
408 adev: tmp_adev);
409
410 if (!r) {
411 amdgpu_set_init_level(adev: tmp_adev,
412 lvl: AMDGPU_INIT_LEVEL_DEFAULT);
413 amdgpu_irq_gpu_reset_resume_helper(adev: tmp_adev);
414
415 r = amdgpu_ib_ring_tests(adev: tmp_adev);
416 if (r) {
417 dev_err(tmp_adev->dev,
418 "ib ring test failed (%d).\n", r);
419 r = -EAGAIN;
420 tmp_adev->asic_reset_res = r;
421 goto end;
422 }
423 }
424 }
425
426end:
427 return r;
428}
429
430static struct amdgpu_reset_handler aldebaran_mode2_handler = {
431 .reset_method = AMD_RESET_METHOD_MODE2,
432 .prepare_env = NULL,
433 .prepare_hwcontext = aldebaran_mode2_prepare_hwcontext,
434 .perform_reset = aldebaran_mode2_perform_reset,
435 .restore_hwcontext = aldebaran_mode2_restore_hwcontext,
436 .restore_env = NULL,
437 .do_reset = aldebaran_mode2_reset,
438};
439
440static struct amdgpu_reset_handler
441 *aldebaran_rst_handlers[AMDGPU_RESET_MAX_HANDLERS] = {
442 &aldebaran_mode2_handler,
443 &xgmi_reset_on_init_handler,
444 };
445
446int aldebaran_reset_init(struct amdgpu_device *adev)
447{
448 struct amdgpu_reset_control *reset_ctl;
449
450 reset_ctl = kzalloc(sizeof(*reset_ctl), GFP_KERNEL);
451 if (!reset_ctl)
452 return -ENOMEM;
453
454 reset_ctl->handle = adev;
455 reset_ctl->async_reset = aldebaran_async_reset;
456 reset_ctl->active_reset = AMD_RESET_METHOD_NONE;
457 reset_ctl->get_reset_handler = aldebaran_get_reset_handler;
458
459 INIT_WORK(&reset_ctl->reset_work, reset_ctl->async_reset);
460 /* Only mode2 is handled through reset control now */
461 reset_ctl->reset_handlers = &aldebaran_rst_handlers;
462
463 adev->reset_cntl = reset_ctl;
464
465 return 0;
466}
467
468int aldebaran_reset_fini(struct amdgpu_device *adev)
469{
470 kfree(objp: adev->reset_cntl);
471 adev->reset_cntl = NULL;
472 return 0;
473}
474

source code of linux/drivers/gpu/drm/amd/amdgpu/aldebaran.c