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#include <drm/drm_debugfs.h>
34
35#include "amdgpu.h"
36#include "atom.h"
37#include "amdgpu_trace.h"
38
39#define AMDGPU_IB_TEST_TIMEOUT msecs_to_jiffies(1000)
40#define AMDGPU_IB_TEST_GFX_XGMI_TIMEOUT msecs_to_jiffies(2000)
41
42/*
43 * IB
44 * IBs (Indirect Buffers) and areas of GPU accessible memory where
45 * commands are stored. You can put a pointer to the IB in the
46 * command ring and the hw will fetch the commands from the IB
47 * and execute them. Generally userspace acceleration drivers
48 * produce command buffers which are send to the kernel and
49 * put in IBs for execution by the requested ring.
50 */
51
52/**
53 * amdgpu_ib_get - request an IB (Indirect Buffer)
54 *
55 * @ring: ring index the IB is associated with
56 * @size: requested IB size
57 * @ib: IB object returned
58 *
59 * Request an IB (all asics). IBs are allocated using the
60 * suballocator.
61 * Returns 0 on success, error on failure.
62 */
63int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm,
64 unsigned size, enum amdgpu_ib_pool_type pool_type,
65 struct amdgpu_ib *ib)
66{
67 int r;
68
69 if (size) {
70 r = amdgpu_sa_bo_new(&adev->ib_pools[pool_type],
71 &ib->sa_bo, size, 256);
72 if (r) {
73 dev_err(adev->dev, "failed to get a new IB (%d)\n", r);
74 return r;
75 }
76
77 ib->ptr = amdgpu_sa_bo_cpu_addr(ib->sa_bo);
78
79 if (!vm)
80 ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);
81 }
82
83 return 0;
84}
85
86/**
87 * amdgpu_ib_free - free an IB (Indirect Buffer)
88 *
89 * @adev: amdgpu_device pointer
90 * @ib: IB object to free
91 * @f: the fence SA bo need wait on for the ib alloation
92 *
93 * Free an IB (all asics).
94 */
95void amdgpu_ib_free(struct amdgpu_device *adev, struct amdgpu_ib *ib,
96 struct dma_fence *f)
97{
98 amdgpu_sa_bo_free(adev, &ib->sa_bo, f);
99}
100
101/**
102 * amdgpu_ib_schedule - schedule an IB (Indirect Buffer) on the ring
103 *
104 * @adev: amdgpu_device pointer
105 * @num_ibs: number of IBs to schedule
106 * @ibs: IB objects to schedule
107 * @f: fence created during this submission
108 *
109 * Schedule an IB on the associated ring (all asics).
110 * Returns 0 on success, error on failure.
111 *
112 * On SI, there are two parallel engines fed from the primary ring,
113 * the CE (Constant Engine) and the DE (Drawing Engine). Since
114 * resource descriptors have moved to memory, the CE allows you to
115 * prime the caches while the DE is updating register state so that
116 * the resource descriptors will be already in cache when the draw is
117 * processed. To accomplish this, the userspace driver submits two
118 * IBs, one for the CE and one for the DE. If there is a CE IB (called
119 * a CONST_IB), it will be put on the ring prior to the DE IB. Prior
120 * to SI there was just a DE IB.
121 */
122int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
123 struct amdgpu_ib *ibs, struct amdgpu_job *job,
124 struct dma_fence **f)
125{
126 struct amdgpu_device *adev = ring->adev;
127 struct amdgpu_ib *ib = &ibs[0];
128 struct dma_fence *tmp = NULL;
129 bool skip_preamble, need_ctx_switch;
130 unsigned patch_offset = ~0;
131 struct amdgpu_vm *vm;
132 uint64_t fence_ctx;
133 uint32_t status = 0, alloc_size;
134 unsigned fence_flags = 0;
135 bool secure;
136
137 unsigned i;
138 int r = 0;
139 bool need_pipe_sync = false;
140
141 if (num_ibs == 0)
142 return -EINVAL;
143
144 /* ring tests don't use a job */
145 if (job) {
146 vm = job->vm;
147 fence_ctx = job->base.s_fence ?
148 job->base.s_fence->scheduled.context : 0;
149 } else {
150 vm = NULL;
151 fence_ctx = 0;
152 }
153
154 if (!ring->sched.ready) {
155 dev_err(adev->dev, "couldn't schedule ib on ring <%s>\n", ring->name);
156 return -EINVAL;
157 }
158
159 if (vm && !job->vmid) {
160 dev_err(adev->dev, "VM IB without ID\n");
161 return -EINVAL;
162 }
163
164 if ((ib->flags & AMDGPU_IB_FLAGS_SECURE) &&
165 (ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE)) {
166 dev_err(adev->dev, "secure submissions not supported on compute rings\n");
167 return -EINVAL;
168 }
169
170 alloc_size = ring->funcs->emit_frame_size + num_ibs *
171 ring->funcs->emit_ib_size;
172
173 r = amdgpu_ring_alloc(ring, alloc_size);
174 if (r) {
175 dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
176 return r;
177 }
178
179 need_ctx_switch = ring->current_ctx != fence_ctx;
180 if (ring->funcs->emit_pipeline_sync && job &&
181 ((tmp = amdgpu_sync_get_fence(&job->sched_sync)) ||
182 (amdgpu_sriov_vf(adev) && need_ctx_switch) ||
183 amdgpu_vm_need_pipeline_sync(ring, job))) {
184 need_pipe_sync = true;
185
186 if (tmp)
187 trace_amdgpu_ib_pipe_sync(job, tmp);
188
189 dma_fence_put(tmp);
190 }
191
192 if ((ib->flags & AMDGPU_IB_FLAG_EMIT_MEM_SYNC) && ring->funcs->emit_mem_sync)
193 ring->funcs->emit_mem_sync(ring);
194
195 if (ring->funcs->insert_start)
196 ring->funcs->insert_start(ring);
197
198 if (job) {
199 r = amdgpu_vm_flush(ring, job, need_pipe_sync);
200 if (r) {
201 amdgpu_ring_undo(ring);
202 return r;
203 }
204 }
205
206 if (job && ring->funcs->init_cond_exec)
207 patch_offset = amdgpu_ring_init_cond_exec(ring);
208
209#ifdef CONFIG_X86_64
210 if (!(adev->flags & AMD_IS_APU))
211#endif
212 {
213 if (ring->funcs->emit_hdp_flush)
214 amdgpu_ring_emit_hdp_flush(ring);
215 else
216 amdgpu_asic_flush_hdp(adev, ring);
217 }
218
219 if (need_ctx_switch)
220 status |= AMDGPU_HAVE_CTX_SWITCH;
221
222 skip_preamble = ring->current_ctx == fence_ctx;
223 if (job && ring->funcs->emit_cntxcntl) {
224 status |= job->preamble_status;
225 status |= job->preemption_status;
226 amdgpu_ring_emit_cntxcntl(ring, status);
227 }
228
229 /* Setup initial TMZiness and send it off.
230 */
231 secure = false;
232 if (job && ring->funcs->emit_frame_cntl) {
233 secure = ib->flags & AMDGPU_IB_FLAGS_SECURE;
234 amdgpu_ring_emit_frame_cntl(ring, true, secure);
235 }
236
237 for (i = 0; i < num_ibs; ++i) {
238 ib = &ibs[i];
239
240 /* drop preamble IBs if we don't have a context switch */
241 if ((ib->flags & AMDGPU_IB_FLAG_PREAMBLE) &&
242 skip_preamble &&
243 !(status & AMDGPU_PREAMBLE_IB_PRESENT_FIRST) &&
244 !amdgpu_mcbp &&
245 !amdgpu_sriov_vf(adev)) /* for SRIOV preemption, Preamble CE ib must be inserted anyway */
246 continue;
247
248 if (job && ring->funcs->emit_frame_cntl) {
249 if (secure != !!(ib->flags & AMDGPU_IB_FLAGS_SECURE)) {
250 amdgpu_ring_emit_frame_cntl(ring, false, secure);
251 secure = !secure;
252 amdgpu_ring_emit_frame_cntl(ring, true, secure);
253 }
254 }
255
256 amdgpu_ring_emit_ib(ring, job, ib, status);
257 status &= ~AMDGPU_HAVE_CTX_SWITCH;
258 }
259
260 if (job && ring->funcs->emit_frame_cntl)
261 amdgpu_ring_emit_frame_cntl(ring, false, secure);
262
263#ifdef CONFIG_X86_64
264 if (!(adev->flags & AMD_IS_APU))
265#endif
266 amdgpu_asic_invalidate_hdp(adev, ring);
267
268 if (ib->flags & AMDGPU_IB_FLAG_TC_WB_NOT_INVALIDATE)
269 fence_flags |= AMDGPU_FENCE_FLAG_TC_WB_ONLY;
270
271 /* wrap the last IB with fence */
272 if (job && job->uf_addr) {
273 amdgpu_ring_emit_fence(ring, job->uf_addr, job->uf_sequence,
274 fence_flags | AMDGPU_FENCE_FLAG_64BIT);
275 }
276
277 r = amdgpu_fence_emit(ring, f, fence_flags);
278 if (r) {
279 dev_err(adev->dev, "failed to emit fence (%d)\n", r);
280 if (job && job->vmid)
281 amdgpu_vmid_reset(adev, ring->funcs->vmhub, job->vmid);
282 amdgpu_ring_undo(ring);
283 return r;
284 }
285
286 if (ring->funcs->insert_end)
287 ring->funcs->insert_end(ring);
288
289 if (patch_offset != ~0 && ring->funcs->patch_cond_exec)
290 amdgpu_ring_patch_cond_exec(ring, patch_offset);
291
292 ring->current_ctx = fence_ctx;
293 if (vm && ring->funcs->emit_switch_buffer)
294 amdgpu_ring_emit_switch_buffer(ring);
295 amdgpu_ring_commit(ring);
296 return 0;
297}
298
299/**
300 * amdgpu_ib_pool_init - Init the IB (Indirect Buffer) pool
301 *
302 * @adev: amdgpu_device pointer
303 *
304 * Initialize the suballocator to manage a pool of memory
305 * for use as IBs (all asics).
306 * Returns 0 on success, error on failure.
307 */
308int amdgpu_ib_pool_init(struct amdgpu_device *adev)
309{
310 unsigned size;
311 int r, i;
312
313 if (adev->ib_pool_ready)
314 return 0;
315
316 for (i = 0; i < AMDGPU_IB_POOL_MAX; i++) {
317 if (i == AMDGPU_IB_POOL_DIRECT)
318 size = PAGE_SIZE * 2;
319 else
320 size = AMDGPU_IB_POOL_SIZE;
321
322 r = amdgpu_sa_bo_manager_init(adev, &adev->ib_pools[i],
323 size, AMDGPU_GPU_PAGE_SIZE,
324 AMDGPU_GEM_DOMAIN_GTT);
325 if (r)
326 goto error;
327 }
328 adev->ib_pool_ready = true;
329
330 return 0;
331
332error:
333 while (i--)
334 amdgpu_sa_bo_manager_fini(adev, &adev->ib_pools[i]);
335 return r;
336}
337
338/**
339 * amdgpu_ib_pool_fini - Free the IB (Indirect Buffer) pool
340 *
341 * @adev: amdgpu_device pointer
342 *
343 * Tear down the suballocator managing the pool of memory
344 * for use as IBs (all asics).
345 */
346void amdgpu_ib_pool_fini(struct amdgpu_device *adev)
347{
348 int i;
349
350 if (!adev->ib_pool_ready)
351 return;
352
353 for (i = 0; i < AMDGPU_IB_POOL_MAX; i++)
354 amdgpu_sa_bo_manager_fini(adev, &adev->ib_pools[i]);
355 adev->ib_pool_ready = false;
356}
357
358/**
359 * amdgpu_ib_ring_tests - test IBs on the rings
360 *
361 * @adev: amdgpu_device pointer
362 *
363 * Test an IB (Indirect Buffer) on each ring.
364 * If the test fails, disable the ring.
365 * Returns 0 on success, error if the primary GFX ring
366 * IB test fails.
367 */
368int amdgpu_ib_ring_tests(struct amdgpu_device *adev)
369{
370 long tmo_gfx, tmo_mm;
371 int r, ret = 0;
372 unsigned i;
373
374 tmo_mm = tmo_gfx = AMDGPU_IB_TEST_TIMEOUT;
375 if (amdgpu_sriov_vf(adev)) {
376 /* for MM engines in hypervisor side they are not scheduled together
377 * with CP and SDMA engines, so even in exclusive mode MM engine could
378 * still running on other VF thus the IB TEST TIMEOUT for MM engines
379 * under SR-IOV should be set to a long time. 8 sec should be enough
380 * for the MM comes back to this VF.
381 */
382 tmo_mm = 8 * AMDGPU_IB_TEST_TIMEOUT;
383 }
384
385 if (amdgpu_sriov_runtime(adev)) {
386 /* for CP & SDMA engines since they are scheduled together so
387 * need to make the timeout width enough to cover the time
388 * cost waiting for it coming back under RUNTIME only
389 */
390 tmo_gfx = 8 * AMDGPU_IB_TEST_TIMEOUT;
391 } else if (adev->gmc.xgmi.hive_id) {
392 tmo_gfx = AMDGPU_IB_TEST_GFX_XGMI_TIMEOUT;
393 }
394
395 for (i = 0; i < adev->num_rings; ++i) {
396 struct amdgpu_ring *ring = adev->rings[i];
397 long tmo;
398
399 /* KIQ rings don't have an IB test because we never submit IBs
400 * to them and they have no interrupt support.
401 */
402 if (!ring->sched.ready || !ring->funcs->test_ib)
403 continue;
404
405 /* MM engine need more time */
406 if (ring->funcs->type == AMDGPU_RING_TYPE_UVD ||
407 ring->funcs->type == AMDGPU_RING_TYPE_VCE ||
408 ring->funcs->type == AMDGPU_RING_TYPE_UVD_ENC ||
409 ring->funcs->type == AMDGPU_RING_TYPE_VCN_DEC ||
410 ring->funcs->type == AMDGPU_RING_TYPE_VCN_ENC ||
411 ring->funcs->type == AMDGPU_RING_TYPE_VCN_JPEG)
412 tmo = tmo_mm;
413 else
414 tmo = tmo_gfx;
415
416 r = amdgpu_ring_test_ib(ring, tmo);
417 if (!r) {
418 DRM_DEV_DEBUG(adev->dev, "ib test on %s succeeded\n",
419 ring->name);
420 continue;
421 }
422
423 ring->sched.ready = false;
424 DRM_DEV_ERROR(adev->dev, "IB test failed on %s (%d).\n",
425 ring->name, r);
426
427 if (ring == &adev->gfx.gfx_ring[0]) {
428 /* oh, oh, that's really bad */
429 adev->accel_working = false;
430 return r;
431
432 } else {
433 ret = r;
434 }
435 }
436 return ret;
437}
438
439/*
440 * Debugfs info
441 */
442#if defined(CONFIG_DEBUG_FS)
443
444static int amdgpu_debugfs_sa_info(struct seq_file *m, void *data)
445{
446 struct drm_info_node *node = (struct drm_info_node *) m->private;
447 struct drm_device *dev = node->minor->dev;
448 struct amdgpu_device *adev = dev->dev_private;
449
450 seq_printf(m, "--------------------- DELAYED --------------------- \n");
451 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_DELAYED],
452 m);
453 seq_printf(m, "-------------------- IMMEDIATE -------------------- \n");
454 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_IMMEDIATE],
455 m);
456 seq_printf(m, "--------------------- DIRECT ---------------------- \n");
457 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_DIRECT], m);
458
459 return 0;
460}
461
462static const struct drm_info_list amdgpu_debugfs_sa_list[] = {
463 {"amdgpu_sa_info", &amdgpu_debugfs_sa_info, 0, NULL},
464};
465
466#endif
467
468int amdgpu_debugfs_sa_init(struct amdgpu_device *adev)
469{
470#if defined(CONFIG_DEBUG_FS)
471 return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_sa_list,
472 ARRAY_SIZE(amdgpu_debugfs_sa_list));
473#else
474 return 0;
475#endif
476}
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}