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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 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, 256);
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 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 patch_offset = ~0;
135 struct amdgpu_vm *vm;
136 uint64_t fence_ctx;
137 uint32_t status = 0, alloc_size;
138 unsigned fence_flags = 0;
139 bool secure;
140
141 unsigned i;
142 int r = 0;
143 bool need_pipe_sync = false;
144
145 if (num_ibs == 0)
146 return -EINVAL;
147
148 /* ring tests don't use a job */
149 if (job) {
150 vm = job->vm;
151 fence_ctx = job->base.s_fence ?
152 job->base.s_fence->scheduled.context : 0;
153 } else {
154 vm = NULL;
155 fence_ctx = 0;
156 }
157
158 if (!ring->sched.ready && !ring->is_mes_queue) {
159 dev_err(adev->dev, "couldn't schedule ib on ring <%s>\n", ring->name);
160 return -EINVAL;
161 }
162
163 if (vm && !job->vmid && !ring->is_mes_queue) {
164 dev_err(adev->dev, "VM IB without ID\n");
165 return -EINVAL;
166 }
167
168 if ((ib->flags & AMDGPU_IB_FLAGS_SECURE) &&
169 (!ring->funcs->secure_submission_supported)) {
170 dev_err(adev->dev, "secure submissions not supported on ring <%s>\n", ring->name);
171 return -EINVAL;
172 }
173
174 alloc_size = ring->funcs->emit_frame_size + num_ibs *
175 ring->funcs->emit_ib_size;
176
177 r = amdgpu_ring_alloc(ring, alloc_size);
178 if (r) {
179 dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
180 return r;
181 }
182
183 need_ctx_switch = ring->current_ctx != fence_ctx;
184 if (ring->funcs->emit_pipeline_sync && job &&
185 ((tmp = amdgpu_sync_get_fence(&job->explicit_sync)) ||
186 (amdgpu_sriov_vf(adev) && need_ctx_switch) ||
187 amdgpu_vm_need_pipeline_sync(ring, job))) {
188 need_pipe_sync = true;
189
190 if (tmp)
191 trace_amdgpu_ib_pipe_sync(job, tmp);
192
193 dma_fence_put(tmp);
194 }
195
196 if ((ib->flags & AMDGPU_IB_FLAG_EMIT_MEM_SYNC) && ring->funcs->emit_mem_sync)
197 ring->funcs->emit_mem_sync(ring);
198
199 if (ring->funcs->emit_wave_limit &&
200 ring->hw_prio == AMDGPU_GFX_PIPE_PRIO_HIGH)
201 ring->funcs->emit_wave_limit(ring, true);
202
203 if (ring->funcs->insert_start)
204 ring->funcs->insert_start(ring);
205
206 if (job) {
207 r = amdgpu_vm_flush(ring, job, need_pipe_sync);
208 if (r) {
209 amdgpu_ring_undo(ring);
210 return r;
211 }
212 }
213
214 amdgpu_ring_ib_begin(ring);
215 if (job && ring->funcs->init_cond_exec)
216 patch_offset = amdgpu_ring_init_cond_exec(ring);
217
218 amdgpu_device_flush_hdp(adev, ring);
219
220 if (need_ctx_switch)
221 status |= AMDGPU_HAVE_CTX_SWITCH;
222
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 if (job && ring->funcs->emit_frame_cntl) {
241 if (secure != !!(ib->flags & AMDGPU_IB_FLAGS_SECURE)) {
242 amdgpu_ring_emit_frame_cntl(ring, false, secure);
243 secure = !secure;
244 amdgpu_ring_emit_frame_cntl(ring, true, secure);
245 }
246 }
247
248 amdgpu_ring_emit_ib(ring, job, ib, status);
249 status &= ~AMDGPU_HAVE_CTX_SWITCH;
250 }
251
252 if (job && ring->funcs->emit_frame_cntl)
253 amdgpu_ring_emit_frame_cntl(ring, false, secure);
254
255 amdgpu_device_invalidate_hdp(adev, ring);
256
257 if (ib->flags & AMDGPU_IB_FLAG_TC_WB_NOT_INVALIDATE)
258 fence_flags |= AMDGPU_FENCE_FLAG_TC_WB_ONLY;
259
260 /* wrap the last IB with fence */
261 if (job && job->uf_addr) {
262 amdgpu_ring_emit_fence(ring, job->uf_addr, job->uf_sequence,
263 fence_flags | AMDGPU_FENCE_FLAG_64BIT);
264 }
265
266 r = amdgpu_fence_emit(ring, f, job, fence_flags);
267 if (r) {
268 dev_err(adev->dev, "failed to emit fence (%d)\n", r);
269 if (job && job->vmid)
270 amdgpu_vmid_reset(adev, ring->funcs->vmhub, job->vmid);
271 amdgpu_ring_undo(ring);
272 return r;
273 }
274
275 if (ring->funcs->insert_end)
276 ring->funcs->insert_end(ring);
277
278 if (patch_offset != ~0 && ring->funcs->patch_cond_exec)
279 amdgpu_ring_patch_cond_exec(ring, patch_offset);
280
281 ring->current_ctx = fence_ctx;
282 if (vm && ring->funcs->emit_switch_buffer)
283 amdgpu_ring_emit_switch_buffer(ring);
284
285 if (ring->funcs->emit_wave_limit &&
286 ring->hw_prio == AMDGPU_GFX_PIPE_PRIO_HIGH)
287 ring->funcs->emit_wave_limit(ring, false);
288
289 amdgpu_ring_ib_end(ring);
290 amdgpu_ring_commit(ring);
291 return 0;
292}
293
294/**
295 * amdgpu_ib_pool_init - Init the IB (Indirect Buffer) pool
296 *
297 * @adev: amdgpu_device pointer
298 *
299 * Initialize the suballocator to manage a pool of memory
300 * for use as IBs (all asics).
301 * Returns 0 on success, error on failure.
302 */
303int amdgpu_ib_pool_init(struct amdgpu_device *adev)
304{
305 int r, i;
306
307 if (adev->ib_pool_ready)
308 return 0;
309
310 for (i = 0; i < AMDGPU_IB_POOL_MAX; i++) {
311 r = amdgpu_sa_bo_manager_init(adev, &adev->ib_pools[i],
312 AMDGPU_IB_POOL_SIZE,
313 AMDGPU_GPU_PAGE_SIZE,
314 AMDGPU_GEM_DOMAIN_GTT);
315 if (r)
316 goto error;
317 }
318 adev->ib_pool_ready = true;
319
320 return 0;
321
322error:
323 while (i--)
324 amdgpu_sa_bo_manager_fini(adev, &adev->ib_pools[i]);
325 return r;
326}
327
328/**
329 * amdgpu_ib_pool_fini - Free the IB (Indirect Buffer) pool
330 *
331 * @adev: amdgpu_device pointer
332 *
333 * Tear down the suballocator managing the pool of memory
334 * for use as IBs (all asics).
335 */
336void amdgpu_ib_pool_fini(struct amdgpu_device *adev)
337{
338 int i;
339
340 if (!adev->ib_pool_ready)
341 return;
342
343 for (i = 0; i < AMDGPU_IB_POOL_MAX; i++)
344 amdgpu_sa_bo_manager_fini(adev, &adev->ib_pools[i]);
345 adev->ib_pool_ready = false;
346}
347
348/**
349 * amdgpu_ib_ring_tests - test IBs on the rings
350 *
351 * @adev: amdgpu_device pointer
352 *
353 * Test an IB (Indirect Buffer) on each ring.
354 * If the test fails, disable the ring.
355 * Returns 0 on success, error if the primary GFX ring
356 * IB test fails.
357 */
358int amdgpu_ib_ring_tests(struct amdgpu_device *adev)
359{
360 long tmo_gfx, tmo_mm;
361 int r, ret = 0;
362 unsigned i;
363
364 tmo_mm = tmo_gfx = AMDGPU_IB_TEST_TIMEOUT;
365 if (amdgpu_sriov_vf(adev)) {
366 /* for MM engines in hypervisor side they are not scheduled together
367 * with CP and SDMA engines, so even in exclusive mode MM engine could
368 * still running on other VF thus the IB TEST TIMEOUT for MM engines
369 * under SR-IOV should be set to a long time. 8 sec should be enough
370 * for the MM comes back to this VF.
371 */
372 tmo_mm = 8 * AMDGPU_IB_TEST_TIMEOUT;
373 }
374
375 if (amdgpu_sriov_runtime(adev)) {
376 /* for CP & SDMA engines since they are scheduled together so
377 * need to make the timeout width enough to cover the time
378 * cost waiting for it coming back under RUNTIME only
379 */
380 tmo_gfx = 8 * AMDGPU_IB_TEST_TIMEOUT;
381 } else if (adev->gmc.xgmi.hive_id) {
382 tmo_gfx = AMDGPU_IB_TEST_GFX_XGMI_TIMEOUT;
383 }
384
385 for (i = 0; i < adev->num_rings; ++i) {
386 struct amdgpu_ring *ring = adev->rings[i];
387 long tmo;
388
389 /* KIQ rings don't have an IB test because we never submit IBs
390 * to them and they have no interrupt support.
391 */
392 if (!ring->sched.ready || !ring->funcs->test_ib)
393 continue;
394
395 if (adev->enable_mes &&
396 ring->funcs->type == AMDGPU_RING_TYPE_KIQ)
397 continue;
398
399 /* MM engine need more time */
400 if (ring->funcs->type == AMDGPU_RING_TYPE_UVD ||
401 ring->funcs->type == AMDGPU_RING_TYPE_VCE ||
402 ring->funcs->type == AMDGPU_RING_TYPE_UVD_ENC ||
403 ring->funcs->type == AMDGPU_RING_TYPE_VCN_DEC ||
404 ring->funcs->type == AMDGPU_RING_TYPE_VCN_ENC ||
405 ring->funcs->type == AMDGPU_RING_TYPE_VCN_JPEG)
406 tmo = tmo_mm;
407 else
408 tmo = tmo_gfx;
409
410 r = amdgpu_ring_test_ib(ring, tmo);
411 if (!r) {
412 DRM_DEV_DEBUG(adev->dev, "ib test on %s succeeded\n",
413 ring->name);
414 continue;
415 }
416
417 ring->sched.ready = false;
418 DRM_DEV_ERROR(adev->dev, "IB test failed on %s (%d).\n",
419 ring->name, r);
420
421 if (ring == &adev->gfx.gfx_ring[0]) {
422 /* oh, oh, that's really bad */
423 adev->accel_working = false;
424 return r;
425
426 } else {
427 ret = r;
428 }
429 }
430 return ret;
431}
432
433/*
434 * Debugfs info
435 */
436#if defined(CONFIG_DEBUG_FS)
437
438static int amdgpu_debugfs_sa_info_show(struct seq_file *m, void *unused)
439{
440 struct amdgpu_device *adev = (struct amdgpu_device *)m->private;
441
442 seq_printf(m, "--------------------- DELAYED --------------------- \n");
443 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_DELAYED],
444 m);
445 seq_printf(m, "-------------------- IMMEDIATE -------------------- \n");
446 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_IMMEDIATE],
447 m);
448 seq_printf(m, "--------------------- DIRECT ---------------------- \n");
449 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_DIRECT], m);
450
451 return 0;
452}
453
454DEFINE_SHOW_ATTRIBUTE(amdgpu_debugfs_sa_info);
455
456#endif
457
458void amdgpu_debugfs_sa_init(struct amdgpu_device *adev)
459{
460#if defined(CONFIG_DEBUG_FS)
461 struct drm_minor *minor = adev_to_drm(adev)->primary;
462 struct dentry *root = minor->debugfs_root;
463
464 debugfs_create_file("amdgpu_sa_info", 0444, root, adev,
465 &amdgpu_debugfs_sa_info_fops);
466
467#endif
468}
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/*
37 * IB
38 * IBs (Indirect Buffers) and areas of GPU accessible memory where
39 * commands are stored. You can put a pointer to the IB in the
40 * command ring and the hw will fetch the commands from the IB
41 * and execute them. Generally userspace acceleration drivers
42 * produce command buffers which are send to the kernel and
43 * put in IBs for execution by the requested ring.
44 */
45static int amdgpu_debugfs_sa_init(struct amdgpu_device *adev);
46
47/**
48 * amdgpu_ib_get - request an IB (Indirect Buffer)
49 *
50 * @ring: ring index the IB is associated with
51 * @size: requested IB size
52 * @ib: IB object returned
53 *
54 * Request an IB (all asics). IBs are allocated using the
55 * suballocator.
56 * Returns 0 on success, error on failure.
57 */
58int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm,
59 unsigned size, struct amdgpu_ib *ib)
60{
61 int r;
62
63 if (size) {
64 r = amdgpu_sa_bo_new(&adev->ring_tmp_bo,
65 &ib->sa_bo, size, 256);
66 if (r) {
67 dev_err(adev->dev, "failed to get a new IB (%d)\n", r);
68 return r;
69 }
70
71 ib->ptr = amdgpu_sa_bo_cpu_addr(ib->sa_bo);
72
73 if (!vm)
74 ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);
75 }
76
77 ib->vm = vm;
78 ib->vm_id = 0;
79
80 return 0;
81}
82
83/**
84 * amdgpu_ib_free - free an IB (Indirect Buffer)
85 *
86 * @adev: amdgpu_device pointer
87 * @ib: IB object to free
88 * @f: the fence SA bo need wait on for the ib alloation
89 *
90 * Free an IB (all asics).
91 */
92void amdgpu_ib_free(struct amdgpu_device *adev, struct amdgpu_ib *ib, struct 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 fence *last_vm_update,
120 struct fence **f)
121{
122 struct amdgpu_device *adev = ring->adev;
123 struct amdgpu_ib *ib = &ibs[0];
124 struct amdgpu_ctx *ctx, *old_ctx;
125 struct amdgpu_vm *vm;
126 struct fence *hwf;
127 unsigned i;
128 int r = 0;
129
130 if (num_ibs == 0)
131 return -EINVAL;
132
133 ctx = ibs->ctx;
134 vm = ibs->vm;
135
136 if (!ring->ready) {
137 dev_err(adev->dev, "couldn't schedule ib\n");
138 return -EINVAL;
139 }
140
141 if (vm && !ibs->vm_id) {
142 dev_err(adev->dev, "VM IB without ID\n");
143 return -EINVAL;
144 }
145
146 r = amdgpu_ring_alloc(ring, 256 * num_ibs);
147 if (r) {
148 dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
149 return r;
150 }
151
152 if (vm) {
153 /* do context switch */
154 amdgpu_vm_flush(ring, ib->vm_id, ib->vm_pd_addr,
155 ib->gds_base, ib->gds_size,
156 ib->gws_base, ib->gws_size,
157 ib->oa_base, ib->oa_size);
158
159 if (ring->funcs->emit_hdp_flush)
160 amdgpu_ring_emit_hdp_flush(ring);
161 }
162
163 old_ctx = ring->current_ctx;
164 for (i = 0; i < num_ibs; ++i) {
165 ib = &ibs[i];
166
167 if (ib->ctx != ctx || ib->vm != vm) {
168 ring->current_ctx = old_ctx;
169 if (ib->vm_id)
170 amdgpu_vm_reset_id(adev, ib->vm_id);
171 amdgpu_ring_undo(ring);
172 return -EINVAL;
173 }
174 amdgpu_ring_emit_ib(ring, ib);
175 ring->current_ctx = ctx;
176 }
177
178 if (vm) {
179 if (ring->funcs->emit_hdp_invalidate)
180 amdgpu_ring_emit_hdp_invalidate(ring);
181 }
182
183 r = amdgpu_fence_emit(ring, &hwf);
184 if (r) {
185 dev_err(adev->dev, "failed to emit fence (%d)\n", r);
186 ring->current_ctx = old_ctx;
187 if (ib->vm_id)
188 amdgpu_vm_reset_id(adev, ib->vm_id);
189 amdgpu_ring_undo(ring);
190 return r;
191 }
192
193 /* wrap the last IB with fence */
194 if (ib->user) {
195 uint64_t addr = amdgpu_bo_gpu_offset(ib->user->bo);
196 addr += ib->user->offset;
197 amdgpu_ring_emit_fence(ring, addr, ib->sequence,
198 AMDGPU_FENCE_FLAG_64BIT);
199 }
200
201 if (f)
202 *f = fence_get(hwf);
203
204 amdgpu_ring_commit(ring);
205 return 0;
206}
207
208/**
209 * amdgpu_ib_pool_init - Init the IB (Indirect Buffer) pool
210 *
211 * @adev: amdgpu_device pointer
212 *
213 * Initialize the suballocator to manage a pool of memory
214 * for use as IBs (all asics).
215 * Returns 0 on success, error on failure.
216 */
217int amdgpu_ib_pool_init(struct amdgpu_device *adev)
218{
219 int r;
220
221 if (adev->ib_pool_ready) {
222 return 0;
223 }
224 r = amdgpu_sa_bo_manager_init(adev, &adev->ring_tmp_bo,
225 AMDGPU_IB_POOL_SIZE*64*1024,
226 AMDGPU_GPU_PAGE_SIZE,
227 AMDGPU_GEM_DOMAIN_GTT);
228 if (r) {
229 return r;
230 }
231
232 r = amdgpu_sa_bo_manager_start(adev, &adev->ring_tmp_bo);
233 if (r) {
234 return r;
235 }
236
237 adev->ib_pool_ready = true;
238 if (amdgpu_debugfs_sa_init(adev)) {
239 dev_err(adev->dev, "failed to register debugfs file for SA\n");
240 }
241 return 0;
242}
243
244/**
245 * amdgpu_ib_pool_fini - Free the IB (Indirect Buffer) pool
246 *
247 * @adev: amdgpu_device pointer
248 *
249 * Tear down the suballocator managing the pool of memory
250 * for use as IBs (all asics).
251 */
252void amdgpu_ib_pool_fini(struct amdgpu_device *adev)
253{
254 if (adev->ib_pool_ready) {
255 amdgpu_sa_bo_manager_suspend(adev, &adev->ring_tmp_bo);
256 amdgpu_sa_bo_manager_fini(adev, &adev->ring_tmp_bo);
257 adev->ib_pool_ready = false;
258 }
259}
260
261/**
262 * amdgpu_ib_ring_tests - test IBs on the rings
263 *
264 * @adev: amdgpu_device pointer
265 *
266 * Test an IB (Indirect Buffer) on each ring.
267 * If the test fails, disable the ring.
268 * Returns 0 on success, error if the primary GFX ring
269 * IB test fails.
270 */
271int amdgpu_ib_ring_tests(struct amdgpu_device *adev)
272{
273 unsigned i;
274 int r;
275
276 for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
277 struct amdgpu_ring *ring = adev->rings[i];
278
279 if (!ring || !ring->ready)
280 continue;
281
282 r = amdgpu_ring_test_ib(ring);
283 if (r) {
284 ring->ready = false;
285
286 if (ring == &adev->gfx.gfx_ring[0]) {
287 /* oh, oh, that's really bad */
288 DRM_ERROR("amdgpu: failed testing IB on GFX ring (%d).\n", r);
289 adev->accel_working = false;
290 return r;
291
292 } else {
293 /* still not good, but we can live with it */
294 DRM_ERROR("amdgpu: failed testing IB on ring %d (%d).\n", i, r);
295 }
296 }
297 }
298 return 0;
299}
300
301/*
302 * Debugfs info
303 */
304#if defined(CONFIG_DEBUG_FS)
305
306static int amdgpu_debugfs_sa_info(struct seq_file *m, void *data)
307{
308 struct drm_info_node *node = (struct drm_info_node *) m->private;
309 struct drm_device *dev = node->minor->dev;
310 struct amdgpu_device *adev = dev->dev_private;
311
312 amdgpu_sa_bo_dump_debug_info(&adev->ring_tmp_bo, m);
313
314 return 0;
315
316}
317
318static struct drm_info_list amdgpu_debugfs_sa_list[] = {
319 {"amdgpu_sa_info", &amdgpu_debugfs_sa_info, 0, NULL},
320};
321
322#endif
323
324static int amdgpu_debugfs_sa_init(struct amdgpu_device *adev)
325{
326#if defined(CONFIG_DEBUG_FS)
327 return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_sa_list, 1);
328#else
329 return 0;
330#endif
331}