Loading...
1/*
2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Dave Airlie
25 * Alex Deucher
26 * Jerome Glisse
27 * Christian König
28 */
29#include <linux/seq_file.h>
30#include <linux/slab.h>
31
32#include <drm/amdgpu_drm.h>
33
34#include "amdgpu.h"
35#include "atom.h"
36#include "amdgpu_trace.h"
37
38#define AMDGPU_IB_TEST_TIMEOUT msecs_to_jiffies(1000)
39#define AMDGPU_IB_TEST_GFX_XGMI_TIMEOUT msecs_to_jiffies(2000)
40
41/*
42 * IB
43 * IBs (Indirect Buffers) and areas of GPU accessible memory where
44 * commands are stored. You can put a pointer to the IB in the
45 * command ring and the hw will fetch the commands from the IB
46 * and execute them. Generally userspace acceleration drivers
47 * produce command buffers which are send to the kernel and
48 * put in IBs for execution by the requested ring.
49 */
50
51/**
52 * amdgpu_ib_get - request an IB (Indirect Buffer)
53 *
54 * @adev: amdgpu_device pointer
55 * @vm: amdgpu_vm pointer
56 * @size: requested IB size
57 * @pool_type: IB pool type (delayed, immediate, direct)
58 * @ib: IB object returned
59 *
60 * Request an IB (all asics). IBs are allocated using the
61 * suballocator.
62 * Returns 0 on success, error on failure.
63 */
64int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm,
65 unsigned int size, enum amdgpu_ib_pool_type pool_type,
66 struct amdgpu_ib *ib)
67{
68 int r;
69
70 if (size) {
71 r = amdgpu_sa_bo_new(&adev->ib_pools[pool_type],
72 &ib->sa_bo, size);
73 if (r) {
74 dev_err(adev->dev, "failed to get a new IB (%d)\n", r);
75 return r;
76 }
77
78 ib->ptr = amdgpu_sa_bo_cpu_addr(ib->sa_bo);
79 /* flush the cache before commit the IB */
80 ib->flags = AMDGPU_IB_FLAG_EMIT_MEM_SYNC;
81
82 if (!vm)
83 ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);
84 }
85
86 return 0;
87}
88
89/**
90 * amdgpu_ib_free - free an IB (Indirect Buffer)
91 *
92 * @adev: amdgpu_device pointer
93 * @ib: IB object to free
94 * @f: the fence SA bo need wait on for the ib alloation
95 *
96 * Free an IB (all asics).
97 */
98void amdgpu_ib_free(struct amdgpu_device *adev, struct amdgpu_ib *ib,
99 struct dma_fence *f)
100{
101 amdgpu_sa_bo_free(adev, &ib->sa_bo, f);
102}
103
104/**
105 * amdgpu_ib_schedule - schedule an IB (Indirect Buffer) on the ring
106 *
107 * @ring: ring index the IB is associated with
108 * @num_ibs: number of IBs to schedule
109 * @ibs: IB objects to schedule
110 * @job: job to schedule
111 * @f: fence created during this submission
112 *
113 * Schedule an IB on the associated ring (all asics).
114 * Returns 0 on success, error on failure.
115 *
116 * On SI, there are two parallel engines fed from the primary ring,
117 * the CE (Constant Engine) and the DE (Drawing Engine). Since
118 * resource descriptors have moved to memory, the CE allows you to
119 * prime the caches while the DE is updating register state so that
120 * the resource descriptors will be already in cache when the draw is
121 * processed. To accomplish this, the userspace driver submits two
122 * IBs, one for the CE and one for the DE. If there is a CE IB (called
123 * a CONST_IB), it will be put on the ring prior to the DE IB. Prior
124 * to SI there was just a DE IB.
125 */
126int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned int num_ibs,
127 struct amdgpu_ib *ibs, struct amdgpu_job *job,
128 struct dma_fence **f)
129{
130 struct amdgpu_device *adev = ring->adev;
131 struct amdgpu_ib *ib = &ibs[0];
132 struct dma_fence *tmp = NULL;
133 bool need_ctx_switch;
134 unsigned int patch_offset = ~0;
135 struct amdgpu_vm *vm;
136 uint64_t fence_ctx;
137 uint32_t status = 0, alloc_size;
138 unsigned int fence_flags = 0;
139 bool secure, init_shadow;
140 u64 shadow_va, csa_va, gds_va;
141 int vmid = AMDGPU_JOB_GET_VMID(job);
142
143 unsigned int i;
144 int r = 0;
145 bool need_pipe_sync = false;
146
147 if (num_ibs == 0)
148 return -EINVAL;
149
150 /* ring tests don't use a job */
151 if (job) {
152 vm = job->vm;
153 fence_ctx = job->base.s_fence ?
154 job->base.s_fence->scheduled.context : 0;
155 shadow_va = job->shadow_va;
156 csa_va = job->csa_va;
157 gds_va = job->gds_va;
158 init_shadow = job->init_shadow;
159 } else {
160 vm = NULL;
161 fence_ctx = 0;
162 shadow_va = 0;
163 csa_va = 0;
164 gds_va = 0;
165 init_shadow = false;
166 }
167
168 if (!ring->sched.ready && !ring->is_mes_queue) {
169 dev_err(adev->dev, "couldn't schedule ib on ring <%s>\n", ring->name);
170 return -EINVAL;
171 }
172
173 if (vm && !job->vmid && !ring->is_mes_queue) {
174 dev_err(adev->dev, "VM IB without ID\n");
175 return -EINVAL;
176 }
177
178 if ((ib->flags & AMDGPU_IB_FLAGS_SECURE) &&
179 (!ring->funcs->secure_submission_supported)) {
180 dev_err(adev->dev, "secure submissions not supported on ring <%s>\n", ring->name);
181 return -EINVAL;
182 }
183
184 alloc_size = ring->funcs->emit_frame_size + num_ibs *
185 ring->funcs->emit_ib_size;
186
187 r = amdgpu_ring_alloc(ring, alloc_size);
188 if (r) {
189 dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
190 return r;
191 }
192
193 need_ctx_switch = ring->current_ctx != fence_ctx;
194 if (ring->funcs->emit_pipeline_sync && job &&
195 ((tmp = amdgpu_sync_get_fence(&job->explicit_sync)) ||
196 (amdgpu_sriov_vf(adev) && need_ctx_switch) ||
197 amdgpu_vm_need_pipeline_sync(ring, job))) {
198 need_pipe_sync = true;
199
200 if (tmp)
201 trace_amdgpu_ib_pipe_sync(job, tmp);
202
203 dma_fence_put(tmp);
204 }
205
206 if ((ib->flags & AMDGPU_IB_FLAG_EMIT_MEM_SYNC) && ring->funcs->emit_mem_sync)
207 ring->funcs->emit_mem_sync(ring);
208
209 if (ring->funcs->emit_wave_limit &&
210 ring->hw_prio == AMDGPU_GFX_PIPE_PRIO_HIGH)
211 ring->funcs->emit_wave_limit(ring, true);
212
213 if (ring->funcs->insert_start)
214 ring->funcs->insert_start(ring);
215
216 if (job) {
217 r = amdgpu_vm_flush(ring, job, need_pipe_sync);
218 if (r) {
219 amdgpu_ring_undo(ring);
220 return r;
221 }
222 }
223
224 amdgpu_ring_ib_begin(ring);
225
226 if (ring->funcs->emit_gfx_shadow)
227 amdgpu_ring_emit_gfx_shadow(ring, shadow_va, csa_va, gds_va,
228 init_shadow, vmid);
229
230 if (ring->funcs->init_cond_exec)
231 patch_offset = amdgpu_ring_init_cond_exec(ring);
232
233 amdgpu_device_flush_hdp(adev, ring);
234
235 if (need_ctx_switch)
236 status |= AMDGPU_HAVE_CTX_SWITCH;
237
238 if (job && ring->funcs->emit_cntxcntl) {
239 status |= job->preamble_status;
240 status |= job->preemption_status;
241 amdgpu_ring_emit_cntxcntl(ring, status);
242 }
243
244 /* Setup initial TMZiness and send it off.
245 */
246 secure = false;
247 if (job && ring->funcs->emit_frame_cntl) {
248 secure = ib->flags & AMDGPU_IB_FLAGS_SECURE;
249 amdgpu_ring_emit_frame_cntl(ring, true, secure);
250 }
251
252 for (i = 0; i < num_ibs; ++i) {
253 ib = &ibs[i];
254
255 if (job && ring->funcs->emit_frame_cntl) {
256 if (secure != !!(ib->flags & AMDGPU_IB_FLAGS_SECURE)) {
257 amdgpu_ring_emit_frame_cntl(ring, false, secure);
258 secure = !secure;
259 amdgpu_ring_emit_frame_cntl(ring, true, secure);
260 }
261 }
262
263 amdgpu_ring_emit_ib(ring, job, ib, status);
264 status &= ~AMDGPU_HAVE_CTX_SWITCH;
265 }
266
267 if (job && ring->funcs->emit_frame_cntl)
268 amdgpu_ring_emit_frame_cntl(ring, false, secure);
269
270 amdgpu_device_invalidate_hdp(adev, ring);
271
272 if (ib->flags & AMDGPU_IB_FLAG_TC_WB_NOT_INVALIDATE)
273 fence_flags |= AMDGPU_FENCE_FLAG_TC_WB_ONLY;
274
275 /* wrap the last IB with fence */
276 if (job && job->uf_addr) {
277 amdgpu_ring_emit_fence(ring, job->uf_addr, job->uf_sequence,
278 fence_flags | AMDGPU_FENCE_FLAG_64BIT);
279 }
280
281 if (ring->funcs->emit_gfx_shadow) {
282 amdgpu_ring_emit_gfx_shadow(ring, 0, 0, 0, false, 0);
283
284 if (ring->funcs->init_cond_exec) {
285 unsigned int ce_offset = ~0;
286
287 ce_offset = amdgpu_ring_init_cond_exec(ring);
288 if (ce_offset != ~0 && ring->funcs->patch_cond_exec)
289 amdgpu_ring_patch_cond_exec(ring, ce_offset);
290 }
291 }
292
293 r = amdgpu_fence_emit(ring, f, job, fence_flags);
294 if (r) {
295 dev_err(adev->dev, "failed to emit fence (%d)\n", r);
296 if (job && job->vmid)
297 amdgpu_vmid_reset(adev, ring->vm_hub, job->vmid);
298 amdgpu_ring_undo(ring);
299 return r;
300 }
301
302 if (ring->funcs->insert_end)
303 ring->funcs->insert_end(ring);
304
305 if (patch_offset != ~0 && ring->funcs->patch_cond_exec)
306 amdgpu_ring_patch_cond_exec(ring, patch_offset);
307
308 ring->current_ctx = fence_ctx;
309 if (vm && ring->funcs->emit_switch_buffer)
310 amdgpu_ring_emit_switch_buffer(ring);
311
312 if (ring->funcs->emit_wave_limit &&
313 ring->hw_prio == AMDGPU_GFX_PIPE_PRIO_HIGH)
314 ring->funcs->emit_wave_limit(ring, false);
315
316 amdgpu_ring_ib_end(ring);
317 amdgpu_ring_commit(ring);
318 return 0;
319}
320
321/**
322 * amdgpu_ib_pool_init - Init the IB (Indirect Buffer) pool
323 *
324 * @adev: amdgpu_device pointer
325 *
326 * Initialize the suballocator to manage a pool of memory
327 * for use as IBs (all asics).
328 * Returns 0 on success, error on failure.
329 */
330int amdgpu_ib_pool_init(struct amdgpu_device *adev)
331{
332 int r, i;
333
334 if (adev->ib_pool_ready)
335 return 0;
336
337 for (i = 0; i < AMDGPU_IB_POOL_MAX; i++) {
338 r = amdgpu_sa_bo_manager_init(adev, &adev->ib_pools[i],
339 AMDGPU_IB_POOL_SIZE, 256,
340 AMDGPU_GEM_DOMAIN_GTT);
341 if (r)
342 goto error;
343 }
344 adev->ib_pool_ready = true;
345
346 return 0;
347
348error:
349 while (i--)
350 amdgpu_sa_bo_manager_fini(adev, &adev->ib_pools[i]);
351 return r;
352}
353
354/**
355 * amdgpu_ib_pool_fini - Free the IB (Indirect Buffer) pool
356 *
357 * @adev: amdgpu_device pointer
358 *
359 * Tear down the suballocator managing the pool of memory
360 * for use as IBs (all asics).
361 */
362void amdgpu_ib_pool_fini(struct amdgpu_device *adev)
363{
364 int i;
365
366 if (!adev->ib_pool_ready)
367 return;
368
369 for (i = 0; i < AMDGPU_IB_POOL_MAX; i++)
370 amdgpu_sa_bo_manager_fini(adev, &adev->ib_pools[i]);
371 adev->ib_pool_ready = false;
372}
373
374/**
375 * amdgpu_ib_ring_tests - test IBs on the rings
376 *
377 * @adev: amdgpu_device pointer
378 *
379 * Test an IB (Indirect Buffer) on each ring.
380 * If the test fails, disable the ring.
381 * Returns 0 on success, error if the primary GFX ring
382 * IB test fails.
383 */
384int amdgpu_ib_ring_tests(struct amdgpu_device *adev)
385{
386 long tmo_gfx, tmo_mm;
387 int r, ret = 0;
388 unsigned int i;
389
390 tmo_mm = tmo_gfx = AMDGPU_IB_TEST_TIMEOUT;
391 if (amdgpu_sriov_vf(adev)) {
392 /* for MM engines in hypervisor side they are not scheduled together
393 * with CP and SDMA engines, so even in exclusive mode MM engine could
394 * still running on other VF thus the IB TEST TIMEOUT for MM engines
395 * under SR-IOV should be set to a long time. 8 sec should be enough
396 * for the MM comes back to this VF.
397 */
398 tmo_mm = 8 * AMDGPU_IB_TEST_TIMEOUT;
399 }
400
401 if (amdgpu_sriov_runtime(adev)) {
402 /* for CP & SDMA engines since they are scheduled together so
403 * need to make the timeout width enough to cover the time
404 * cost waiting for it coming back under RUNTIME only
405 */
406 tmo_gfx = 8 * AMDGPU_IB_TEST_TIMEOUT;
407 } else if (adev->gmc.xgmi.hive_id) {
408 tmo_gfx = AMDGPU_IB_TEST_GFX_XGMI_TIMEOUT;
409 }
410
411 for (i = 0; i < adev->num_rings; ++i) {
412 struct amdgpu_ring *ring = adev->rings[i];
413 long tmo;
414
415 /* KIQ rings don't have an IB test because we never submit IBs
416 * to them and they have no interrupt support.
417 */
418 if (!ring->sched.ready || !ring->funcs->test_ib)
419 continue;
420
421 if (adev->enable_mes &&
422 ring->funcs->type == AMDGPU_RING_TYPE_KIQ)
423 continue;
424
425 /* MM engine need more time */
426 if (ring->funcs->type == AMDGPU_RING_TYPE_UVD ||
427 ring->funcs->type == AMDGPU_RING_TYPE_VCE ||
428 ring->funcs->type == AMDGPU_RING_TYPE_UVD_ENC ||
429 ring->funcs->type == AMDGPU_RING_TYPE_VCN_DEC ||
430 ring->funcs->type == AMDGPU_RING_TYPE_VCN_ENC ||
431 ring->funcs->type == AMDGPU_RING_TYPE_VCN_JPEG)
432 tmo = tmo_mm;
433 else
434 tmo = tmo_gfx;
435
436 r = amdgpu_ring_test_ib(ring, tmo);
437 if (!r) {
438 DRM_DEV_DEBUG(adev->dev, "ib test on %s succeeded\n",
439 ring->name);
440 continue;
441 }
442
443 ring->sched.ready = false;
444 DRM_DEV_ERROR(adev->dev, "IB test failed on %s (%d).\n",
445 ring->name, r);
446
447 if (ring == &adev->gfx.gfx_ring[0]) {
448 /* oh, oh, that's really bad */
449 adev->accel_working = false;
450 return r;
451
452 } else {
453 ret = r;
454 }
455 }
456 return ret;
457}
458
459/*
460 * Debugfs info
461 */
462#if defined(CONFIG_DEBUG_FS)
463
464static int amdgpu_debugfs_sa_info_show(struct seq_file *m, void *unused)
465{
466 struct amdgpu_device *adev = m->private;
467
468 seq_puts(m, "--------------------- DELAYED ---------------------\n");
469 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_DELAYED],
470 m);
471 seq_puts(m, "-------------------- IMMEDIATE --------------------\n");
472 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_IMMEDIATE],
473 m);
474 seq_puts(m, "--------------------- DIRECT ----------------------\n");
475 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_DIRECT], m);
476
477 return 0;
478}
479
480DEFINE_SHOW_ATTRIBUTE(amdgpu_debugfs_sa_info);
481
482#endif
483
484void amdgpu_debugfs_sa_init(struct amdgpu_device *adev)
485{
486#if defined(CONFIG_DEBUG_FS)
487 struct drm_minor *minor = adev_to_drm(adev)->primary;
488 struct dentry *root = minor->debugfs_root;
489
490 debugfs_create_file("amdgpu_sa_info", 0444, root, adev,
491 &amdgpu_debugfs_sa_info_fops);
492
493#endif
494}
1/*
2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Dave Airlie
25 * Alex Deucher
26 * Jerome Glisse
27 * Christian König
28 */
29#include <linux/seq_file.h>
30#include <linux/slab.h>
31#include <drm/drmP.h>
32#include <drm/amdgpu_drm.h>
33#include "amdgpu.h"
34#include "atom.h"
35
36#define AMDGPU_IB_TEST_TIMEOUT msecs_to_jiffies(1000)
37
38/*
39 * IB
40 * IBs (Indirect Buffers) and areas of GPU accessible memory where
41 * commands are stored. You can put a pointer to the IB in the
42 * command ring and the hw will fetch the commands from the IB
43 * and execute them. Generally userspace acceleration drivers
44 * produce command buffers which are send to the kernel and
45 * put in IBs for execution by the requested ring.
46 */
47static int amdgpu_debugfs_sa_init(struct amdgpu_device *adev);
48
49/**
50 * amdgpu_ib_get - request an IB (Indirect Buffer)
51 *
52 * @ring: ring index the IB is associated with
53 * @size: requested IB size
54 * @ib: IB object returned
55 *
56 * Request an IB (all asics). IBs are allocated using the
57 * suballocator.
58 * Returns 0 on success, error on failure.
59 */
60int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm,
61 unsigned size, struct amdgpu_ib *ib)
62{
63 int r;
64
65 if (size) {
66 r = amdgpu_sa_bo_new(&adev->ring_tmp_bo,
67 &ib->sa_bo, size, 256);
68 if (r) {
69 dev_err(adev->dev, "failed to get a new IB (%d)\n", r);
70 return r;
71 }
72
73 ib->ptr = amdgpu_sa_bo_cpu_addr(ib->sa_bo);
74
75 if (!vm)
76 ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);
77 }
78
79 return 0;
80}
81
82/**
83 * amdgpu_ib_free - free an IB (Indirect Buffer)
84 *
85 * @adev: amdgpu_device pointer
86 * @ib: IB object to free
87 * @f: the fence SA bo need wait on for the ib alloation
88 *
89 * Free an IB (all asics).
90 */
91void amdgpu_ib_free(struct amdgpu_device *adev, struct amdgpu_ib *ib,
92 struct dma_fence *f)
93{
94 amdgpu_sa_bo_free(adev, &ib->sa_bo, f);
95}
96
97/**
98 * amdgpu_ib_schedule - schedule an IB (Indirect Buffer) on the ring
99 *
100 * @adev: amdgpu_device pointer
101 * @num_ibs: number of IBs to schedule
102 * @ibs: IB objects to schedule
103 * @f: fence created during this submission
104 *
105 * Schedule an IB on the associated ring (all asics).
106 * Returns 0 on success, error on failure.
107 *
108 * On SI, there are two parallel engines fed from the primary ring,
109 * the CE (Constant Engine) and the DE (Drawing Engine). Since
110 * resource descriptors have moved to memory, the CE allows you to
111 * prime the caches while the DE is updating register state so that
112 * the resource descriptors will be already in cache when the draw is
113 * processed. To accomplish this, the userspace driver submits two
114 * IBs, one for the CE and one for the DE. If there is a CE IB (called
115 * a CONST_IB), it will be put on the ring prior to the DE IB. Prior
116 * to SI there was just a DE IB.
117 */
118int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
119 struct amdgpu_ib *ibs, struct amdgpu_job *job,
120 struct dma_fence **f)
121{
122 struct amdgpu_device *adev = ring->adev;
123 struct amdgpu_ib *ib = &ibs[0];
124 struct dma_fence *tmp = NULL;
125 bool skip_preamble, need_ctx_switch;
126 unsigned patch_offset = ~0;
127 struct amdgpu_vm *vm;
128 uint64_t fence_ctx;
129 uint32_t status = 0, alloc_size;
130
131 unsigned i;
132 int r = 0;
133 bool need_pipe_sync = false;
134
135 if (num_ibs == 0)
136 return -EINVAL;
137
138 /* ring tests don't use a job */
139 if (job) {
140 vm = job->vm;
141 fence_ctx = job->fence_ctx;
142 } else {
143 vm = NULL;
144 fence_ctx = 0;
145 }
146
147 if (!ring->ready) {
148 dev_err(adev->dev, "couldn't schedule ib on ring <%s>\n", ring->name);
149 return -EINVAL;
150 }
151
152 if (vm && !job->vmid) {
153 dev_err(adev->dev, "VM IB without ID\n");
154 return -EINVAL;
155 }
156
157 alloc_size = ring->funcs->emit_frame_size + num_ibs *
158 ring->funcs->emit_ib_size;
159
160 r = amdgpu_ring_alloc(ring, alloc_size);
161 if (r) {
162 dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
163 return r;
164 }
165
166 if (ring->funcs->emit_pipeline_sync && job &&
167 ((tmp = amdgpu_sync_get_fence(&job->sched_sync, NULL)) ||
168 amdgpu_vm_need_pipeline_sync(ring, job))) {
169 need_pipe_sync = true;
170 dma_fence_put(tmp);
171 }
172
173 if (ring->funcs->insert_start)
174 ring->funcs->insert_start(ring);
175
176 if (job) {
177 r = amdgpu_vm_flush(ring, job, need_pipe_sync);
178 if (r) {
179 amdgpu_ring_undo(ring);
180 return r;
181 }
182 }
183
184 if (job && ring->funcs->init_cond_exec)
185 patch_offset = amdgpu_ring_init_cond_exec(ring);
186
187#ifdef CONFIG_X86_64
188 if (!(adev->flags & AMD_IS_APU))
189#endif
190 {
191 if (ring->funcs->emit_hdp_flush)
192 amdgpu_ring_emit_hdp_flush(ring);
193 else
194 amdgpu_asic_flush_hdp(adev, ring);
195 }
196
197 skip_preamble = ring->current_ctx == fence_ctx;
198 need_ctx_switch = ring->current_ctx != fence_ctx;
199 if (job && ring->funcs->emit_cntxcntl) {
200 if (need_ctx_switch)
201 status |= AMDGPU_HAVE_CTX_SWITCH;
202 status |= job->preamble_status;
203
204 amdgpu_ring_emit_cntxcntl(ring, status);
205 }
206
207 for (i = 0; i < num_ibs; ++i) {
208 ib = &ibs[i];
209
210 /* drop preamble IBs if we don't have a context switch */
211 if ((ib->flags & AMDGPU_IB_FLAG_PREAMBLE) &&
212 skip_preamble &&
213 !(status & AMDGPU_PREAMBLE_IB_PRESENT_FIRST) &&
214 !amdgpu_sriov_vf(adev)) /* for SRIOV preemption, Preamble CE ib must be inserted anyway */
215 continue;
216
217 amdgpu_ring_emit_ib(ring, ib, job ? job->vmid : 0,
218 need_ctx_switch);
219 need_ctx_switch = false;
220 }
221
222 if (ring->funcs->emit_tmz)
223 amdgpu_ring_emit_tmz(ring, false);
224
225#ifdef CONFIG_X86_64
226 if (!(adev->flags & AMD_IS_APU))
227#endif
228 amdgpu_asic_invalidate_hdp(adev, ring);
229
230 r = amdgpu_fence_emit(ring, f);
231 if (r) {
232 dev_err(adev->dev, "failed to emit fence (%d)\n", r);
233 if (job && job->vmid)
234 amdgpu_vmid_reset(adev, ring->funcs->vmhub, job->vmid);
235 amdgpu_ring_undo(ring);
236 return r;
237 }
238
239 if (ring->funcs->insert_end)
240 ring->funcs->insert_end(ring);
241
242 /* wrap the last IB with fence */
243 if (job && job->uf_addr) {
244 amdgpu_ring_emit_fence(ring, job->uf_addr, job->uf_sequence,
245 AMDGPU_FENCE_FLAG_64BIT);
246 }
247
248 if (patch_offset != ~0 && ring->funcs->patch_cond_exec)
249 amdgpu_ring_patch_cond_exec(ring, patch_offset);
250
251 ring->current_ctx = fence_ctx;
252 if (vm && ring->funcs->emit_switch_buffer)
253 amdgpu_ring_emit_switch_buffer(ring);
254 amdgpu_ring_commit(ring);
255 return 0;
256}
257
258/**
259 * amdgpu_ib_pool_init - Init the IB (Indirect Buffer) pool
260 *
261 * @adev: amdgpu_device pointer
262 *
263 * Initialize the suballocator to manage a pool of memory
264 * for use as IBs (all asics).
265 * Returns 0 on success, error on failure.
266 */
267int amdgpu_ib_pool_init(struct amdgpu_device *adev)
268{
269 int r;
270
271 if (adev->ib_pool_ready) {
272 return 0;
273 }
274 r = amdgpu_sa_bo_manager_init(adev, &adev->ring_tmp_bo,
275 AMDGPU_IB_POOL_SIZE*64*1024,
276 AMDGPU_GPU_PAGE_SIZE,
277 AMDGPU_GEM_DOMAIN_GTT);
278 if (r) {
279 return r;
280 }
281
282 adev->ib_pool_ready = true;
283 if (amdgpu_debugfs_sa_init(adev)) {
284 dev_err(adev->dev, "failed to register debugfs file for SA\n");
285 }
286 return 0;
287}
288
289/**
290 * amdgpu_ib_pool_fini - Free the IB (Indirect Buffer) pool
291 *
292 * @adev: amdgpu_device pointer
293 *
294 * Tear down the suballocator managing the pool of memory
295 * for use as IBs (all asics).
296 */
297void amdgpu_ib_pool_fini(struct amdgpu_device *adev)
298{
299 if (adev->ib_pool_ready) {
300 amdgpu_sa_bo_manager_fini(adev, &adev->ring_tmp_bo);
301 adev->ib_pool_ready = false;
302 }
303}
304
305/**
306 * amdgpu_ib_ring_tests - test IBs on the rings
307 *
308 * @adev: amdgpu_device pointer
309 *
310 * Test an IB (Indirect Buffer) on each ring.
311 * If the test fails, disable the ring.
312 * Returns 0 on success, error if the primary GFX ring
313 * IB test fails.
314 */
315int amdgpu_ib_ring_tests(struct amdgpu_device *adev)
316{
317 unsigned i;
318 int r, ret = 0;
319 long tmo_gfx, tmo_mm;
320
321 tmo_mm = tmo_gfx = AMDGPU_IB_TEST_TIMEOUT;
322 if (amdgpu_sriov_vf(adev)) {
323 /* for MM engines in hypervisor side they are not scheduled together
324 * with CP and SDMA engines, so even in exclusive mode MM engine could
325 * still running on other VF thus the IB TEST TIMEOUT for MM engines
326 * under SR-IOV should be set to a long time. 8 sec should be enough
327 * for the MM comes back to this VF.
328 */
329 tmo_mm = 8 * AMDGPU_IB_TEST_TIMEOUT;
330 }
331
332 if (amdgpu_sriov_runtime(adev)) {
333 /* for CP & SDMA engines since they are scheduled together so
334 * need to make the timeout width enough to cover the time
335 * cost waiting for it coming back under RUNTIME only
336 */
337 tmo_gfx = 8 * AMDGPU_IB_TEST_TIMEOUT;
338 }
339
340 for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
341 struct amdgpu_ring *ring = adev->rings[i];
342 long tmo;
343
344 if (!ring || !ring->ready)
345 continue;
346
347 /* MM engine need more time */
348 if (ring->funcs->type == AMDGPU_RING_TYPE_UVD ||
349 ring->funcs->type == AMDGPU_RING_TYPE_VCE ||
350 ring->funcs->type == AMDGPU_RING_TYPE_UVD_ENC ||
351 ring->funcs->type == AMDGPU_RING_TYPE_VCN_DEC ||
352 ring->funcs->type == AMDGPU_RING_TYPE_VCN_ENC)
353 tmo = tmo_mm;
354 else
355 tmo = tmo_gfx;
356
357 r = amdgpu_ring_test_ib(ring, tmo);
358 if (r) {
359 ring->ready = false;
360
361 if (ring == &adev->gfx.gfx_ring[0]) {
362 /* oh, oh, that's really bad */
363 DRM_ERROR("amdgpu: failed testing IB on GFX ring (%d).\n", r);
364 adev->accel_working = false;
365 return r;
366
367 } else {
368 /* still not good, but we can live with it */
369 DRM_ERROR("amdgpu: failed testing IB on ring %d (%d).\n", i, r);
370 ret = r;
371 }
372 }
373 }
374 return ret;
375}
376
377/*
378 * Debugfs info
379 */
380#if defined(CONFIG_DEBUG_FS)
381
382static int amdgpu_debugfs_sa_info(struct seq_file *m, void *data)
383{
384 struct drm_info_node *node = (struct drm_info_node *) m->private;
385 struct drm_device *dev = node->minor->dev;
386 struct amdgpu_device *adev = dev->dev_private;
387
388 amdgpu_sa_bo_dump_debug_info(&adev->ring_tmp_bo, m);
389
390 return 0;
391
392}
393
394static const struct drm_info_list amdgpu_debugfs_sa_list[] = {
395 {"amdgpu_sa_info", &amdgpu_debugfs_sa_info, 0, NULL},
396};
397
398#endif
399
400static int amdgpu_debugfs_sa_init(struct amdgpu_device *adev)
401{
402#if defined(CONFIG_DEBUG_FS)
403 return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_sa_list, 1);
404#else
405 return 0;
406#endif
407}