2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
24 * Authors: Dave Airlie
29 #include <linux/seq_file.h>
30 #include <linux/slab.h>
32 #include <drm/amdgpu_drm.h>
33 #include <drm/drm_debugfs.h>
37 #include "amdgpu_trace.h"
39 #define AMDGPU_IB_TEST_TIMEOUT msecs_to_jiffies(1000)
40 #define AMDGPU_IB_TEST_GFX_XGMI_TIMEOUT msecs_to_jiffies(2000)
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.
53 * amdgpu_ib_get - request an IB (Indirect Buffer)
55 * @adev: amdgpu_device pointer
56 * @vm: amdgpu_vm pointer
57 * @size: requested IB size
58 * @pool_type: IB pool type (delayed, immediate, direct)
59 * @ib: IB object returned
61 * Request an IB (all asics). IBs are allocated using the
63 * Returns 0 on success, error on failure.
65 int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm,
66 unsigned size, enum amdgpu_ib_pool_type pool_type,
72 r = amdgpu_sa_bo_new(&adev->ib_pools[pool_type],
73 &ib->sa_bo, size, 256);
75 dev_err(adev->dev, "failed to get a new IB (%d)\n", r);
79 ib->ptr = amdgpu_sa_bo_cpu_addr(ib->sa_bo);
82 ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);
89 * amdgpu_ib_free - free an IB (Indirect Buffer)
91 * @adev: amdgpu_device pointer
92 * @ib: IB object to free
93 * @f: the fence SA bo need wait on for the ib alloation
95 * Free an IB (all asics).
97 void amdgpu_ib_free(struct amdgpu_device *adev, struct amdgpu_ib *ib,
100 amdgpu_sa_bo_free(adev, &ib->sa_bo, f);
104 * amdgpu_ib_schedule - schedule an IB (Indirect Buffer) on the ring
106 * @ring: ring index the IB is associated with
107 * @num_ibs: number of IBs to schedule
108 * @ibs: IB objects to schedule
109 * @job: job to schedule
110 * @f: fence created during this submission
112 * Schedule an IB on the associated ring (all asics).
113 * Returns 0 on success, error on failure.
115 * On SI, there are two parallel engines fed from the primary ring,
116 * the CE (Constant Engine) and the DE (Drawing Engine). Since
117 * resource descriptors have moved to memory, the CE allows you to
118 * prime the caches while the DE is updating register state so that
119 * the resource descriptors will be already in cache when the draw is
120 * processed. To accomplish this, the userspace driver submits two
121 * IBs, one for the CE and one for the DE. If there is a CE IB (called
122 * a CONST_IB), it will be put on the ring prior to the DE IB. Prior
123 * to SI there was just a DE IB.
125 int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
126 struct amdgpu_ib *ibs, struct amdgpu_job *job,
127 struct dma_fence **f)
129 struct amdgpu_device *adev = ring->adev;
130 struct amdgpu_ib *ib = &ibs[0];
131 struct dma_fence *tmp = NULL;
132 bool skip_preamble, need_ctx_switch;
133 unsigned patch_offset = ~0;
134 struct amdgpu_vm *vm;
136 uint32_t status = 0, alloc_size;
137 unsigned fence_flags = 0;
142 bool need_pipe_sync = false;
147 /* ring tests don't use a job */
150 fence_ctx = job->base.s_fence ?
151 job->base.s_fence->scheduled.context : 0;
157 if (!ring->sched.ready) {
158 dev_err(adev->dev, "couldn't schedule ib on ring <%s>\n", ring->name);
162 if (vm && !job->vmid) {
163 dev_err(adev->dev, "VM IB without ID\n");
167 if ((ib->flags & AMDGPU_IB_FLAGS_SECURE) &&
168 (ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE)) {
169 dev_err(adev->dev, "secure submissions not supported on compute rings\n");
173 alloc_size = ring->funcs->emit_frame_size + num_ibs *
174 ring->funcs->emit_ib_size;
176 r = amdgpu_ring_alloc(ring, alloc_size);
178 dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
182 need_ctx_switch = ring->current_ctx != fence_ctx;
183 if (ring->funcs->emit_pipeline_sync && job &&
184 ((tmp = amdgpu_sync_get_fence(&job->sched_sync)) ||
185 (amdgpu_sriov_vf(adev) && need_ctx_switch) ||
186 amdgpu_vm_need_pipeline_sync(ring, job))) {
187 need_pipe_sync = true;
190 trace_amdgpu_ib_pipe_sync(job, tmp);
195 if ((ib->flags & AMDGPU_IB_FLAG_EMIT_MEM_SYNC) && ring->funcs->emit_mem_sync)
196 ring->funcs->emit_mem_sync(ring);
198 if (ring->funcs->emit_wave_limit &&
199 ring->hw_prio == AMDGPU_GFX_PIPE_PRIO_HIGH)
200 ring->funcs->emit_wave_limit(ring, true);
202 if (ring->funcs->insert_start)
203 ring->funcs->insert_start(ring);
206 r = amdgpu_vm_flush(ring, job, need_pipe_sync);
208 amdgpu_ring_undo(ring);
213 if (job && ring->funcs->init_cond_exec)
214 patch_offset = amdgpu_ring_init_cond_exec(ring);
217 if (!(adev->flags & AMD_IS_APU))
220 if (ring->funcs->emit_hdp_flush)
221 amdgpu_ring_emit_hdp_flush(ring);
223 amdgpu_asic_flush_hdp(adev, ring);
227 status |= AMDGPU_HAVE_CTX_SWITCH;
229 skip_preamble = ring->current_ctx == fence_ctx;
230 if (job && ring->funcs->emit_cntxcntl) {
231 status |= job->preamble_status;
232 status |= job->preemption_status;
233 amdgpu_ring_emit_cntxcntl(ring, status);
236 /* Setup initial TMZiness and send it off.
239 if (job && ring->funcs->emit_frame_cntl) {
240 secure = ib->flags & AMDGPU_IB_FLAGS_SECURE;
241 amdgpu_ring_emit_frame_cntl(ring, true, secure);
244 for (i = 0; i < num_ibs; ++i) {
247 /* drop preamble IBs if we don't have a context switch */
248 if ((ib->flags & AMDGPU_IB_FLAG_PREAMBLE) &&
250 !(status & AMDGPU_PREAMBLE_IB_PRESENT_FIRST) &&
252 !amdgpu_sriov_vf(adev)) /* for SRIOV preemption, Preamble CE ib must be inserted anyway */
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);
259 amdgpu_ring_emit_frame_cntl(ring, true, secure);
263 amdgpu_ring_emit_ib(ring, job, ib, status);
264 status &= ~AMDGPU_HAVE_CTX_SWITCH;
267 if (job && ring->funcs->emit_frame_cntl)
268 amdgpu_ring_emit_frame_cntl(ring, false, secure);
271 if (!(adev->flags & AMD_IS_APU))
273 amdgpu_asic_invalidate_hdp(adev, ring);
275 if (ib->flags & AMDGPU_IB_FLAG_TC_WB_NOT_INVALIDATE)
276 fence_flags |= AMDGPU_FENCE_FLAG_TC_WB_ONLY;
278 /* wrap the last IB with fence */
279 if (job && job->uf_addr) {
280 amdgpu_ring_emit_fence(ring, job->uf_addr, job->uf_sequence,
281 fence_flags | AMDGPU_FENCE_FLAG_64BIT);
284 r = amdgpu_fence_emit(ring, f, fence_flags);
286 dev_err(adev->dev, "failed to emit fence (%d)\n", r);
287 if (job && job->vmid)
288 amdgpu_vmid_reset(adev, ring->funcs->vmhub, job->vmid);
289 amdgpu_ring_undo(ring);
293 if (ring->funcs->insert_end)
294 ring->funcs->insert_end(ring);
296 if (patch_offset != ~0 && ring->funcs->patch_cond_exec)
297 amdgpu_ring_patch_cond_exec(ring, patch_offset);
299 ring->current_ctx = fence_ctx;
300 if (vm && ring->funcs->emit_switch_buffer)
301 amdgpu_ring_emit_switch_buffer(ring);
303 if (ring->funcs->emit_wave_limit &&
304 ring->hw_prio == AMDGPU_GFX_PIPE_PRIO_HIGH)
305 ring->funcs->emit_wave_limit(ring, false);
307 amdgpu_ring_commit(ring);
312 * amdgpu_ib_pool_init - Init the IB (Indirect Buffer) pool
314 * @adev: amdgpu_device pointer
316 * Initialize the suballocator to manage a pool of memory
317 * for use as IBs (all asics).
318 * Returns 0 on success, error on failure.
320 int amdgpu_ib_pool_init(struct amdgpu_device *adev)
325 if (adev->ib_pool_ready)
328 for (i = 0; i < AMDGPU_IB_POOL_MAX; i++) {
329 if (i == AMDGPU_IB_POOL_DIRECT)
330 size = PAGE_SIZE * 2;
332 size = AMDGPU_IB_POOL_SIZE;
334 r = amdgpu_sa_bo_manager_init(adev, &adev->ib_pools[i],
335 size, AMDGPU_GPU_PAGE_SIZE,
336 AMDGPU_GEM_DOMAIN_GTT);
340 adev->ib_pool_ready = true;
346 amdgpu_sa_bo_manager_fini(adev, &adev->ib_pools[i]);
351 * amdgpu_ib_pool_fini - Free the IB (Indirect Buffer) pool
353 * @adev: amdgpu_device pointer
355 * Tear down the suballocator managing the pool of memory
356 * for use as IBs (all asics).
358 void amdgpu_ib_pool_fini(struct amdgpu_device *adev)
362 if (!adev->ib_pool_ready)
365 for (i = 0; i < AMDGPU_IB_POOL_MAX; i++)
366 amdgpu_sa_bo_manager_fini(adev, &adev->ib_pools[i]);
367 adev->ib_pool_ready = false;
371 * amdgpu_ib_ring_tests - test IBs on the rings
373 * @adev: amdgpu_device pointer
375 * Test an IB (Indirect Buffer) on each ring.
376 * If the test fails, disable the ring.
377 * Returns 0 on success, error if the primary GFX ring
380 int amdgpu_ib_ring_tests(struct amdgpu_device *adev)
382 long tmo_gfx, tmo_mm;
386 tmo_mm = tmo_gfx = AMDGPU_IB_TEST_TIMEOUT;
387 if (amdgpu_sriov_vf(adev)) {
388 /* for MM engines in hypervisor side they are not scheduled together
389 * with CP and SDMA engines, so even in exclusive mode MM engine could
390 * still running on other VF thus the IB TEST TIMEOUT for MM engines
391 * under SR-IOV should be set to a long time. 8 sec should be enough
392 * for the MM comes back to this VF.
394 tmo_mm = 8 * AMDGPU_IB_TEST_TIMEOUT;
397 if (amdgpu_sriov_runtime(adev)) {
398 /* for CP & SDMA engines since they are scheduled together so
399 * need to make the timeout width enough to cover the time
400 * cost waiting for it coming back under RUNTIME only
402 tmo_gfx = 8 * AMDGPU_IB_TEST_TIMEOUT;
403 } else if (adev->gmc.xgmi.hive_id) {
404 tmo_gfx = AMDGPU_IB_TEST_GFX_XGMI_TIMEOUT;
407 for (i = 0; i < adev->num_rings; ++i) {
408 struct amdgpu_ring *ring = adev->rings[i];
411 /* KIQ rings don't have an IB test because we never submit IBs
412 * to them and they have no interrupt support.
414 if (!ring->sched.ready || !ring->funcs->test_ib)
417 /* MM engine need more time */
418 if (ring->funcs->type == AMDGPU_RING_TYPE_UVD ||
419 ring->funcs->type == AMDGPU_RING_TYPE_VCE ||
420 ring->funcs->type == AMDGPU_RING_TYPE_UVD_ENC ||
421 ring->funcs->type == AMDGPU_RING_TYPE_VCN_DEC ||
422 ring->funcs->type == AMDGPU_RING_TYPE_VCN_ENC ||
423 ring->funcs->type == AMDGPU_RING_TYPE_VCN_JPEG)
428 r = amdgpu_ring_test_ib(ring, tmo);
430 DRM_DEV_DEBUG(adev->dev, "ib test on %s succeeded\n",
435 ring->sched.ready = false;
436 DRM_DEV_ERROR(adev->dev, "IB test failed on %s (%d).\n",
439 if (ring == &adev->gfx.gfx_ring[0]) {
440 /* oh, oh, that's really bad */
441 adev->accel_working = false;
454 #if defined(CONFIG_DEBUG_FS)
456 static int amdgpu_debugfs_sa_info(struct seq_file *m, void *data)
458 struct drm_info_node *node = (struct drm_info_node *) m->private;
459 struct drm_device *dev = node->minor->dev;
460 struct amdgpu_device *adev = drm_to_adev(dev);
462 seq_printf(m, "--------------------- DELAYED --------------------- \n");
463 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_DELAYED],
465 seq_printf(m, "-------------------- IMMEDIATE -------------------- \n");
466 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_IMMEDIATE],
468 seq_printf(m, "--------------------- DIRECT ---------------------- \n");
469 amdgpu_sa_bo_dump_debug_info(&adev->ib_pools[AMDGPU_IB_POOL_DIRECT], m);
474 static const struct drm_info_list amdgpu_debugfs_sa_list[] = {
475 {"amdgpu_sa_info", &amdgpu_debugfs_sa_info, 0, NULL},
480 int amdgpu_debugfs_sa_init(struct amdgpu_device *adev)
482 #if defined(CONFIG_DEBUG_FS)
483 return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_sa_list,
484 ARRAY_SIZE(amdgpu_debugfs_sa_list));