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>
35 #include "amdgpu_trace.h"
37 #define AMDGPU_IB_TEST_TIMEOUT msecs_to_jiffies(1000)
38 #define AMDGPU_IB_TEST_GFX_XGMI_TIMEOUT msecs_to_jiffies(2000)
42 * IBs (Indirect Buffers) and areas of GPU accessible memory where
43 * commands are stored. You can put a pointer to the IB in the
44 * command ring and the hw will fetch the commands from the IB
45 * and execute them. Generally userspace acceleration drivers
46 * produce command buffers which are send to the kernel and
47 * put in IBs for execution by the requested ring.
49 static int amdgpu_debugfs_sa_init(struct amdgpu_device *adev);
52 * amdgpu_ib_get - request an IB (Indirect Buffer)
54 * @ring: ring index the IB is associated with
55 * @size: requested IB size
56 * @ib: IB object returned
58 * Request an IB (all asics). IBs are allocated using the
60 * Returns 0 on success, error on failure.
62 int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm,
63 unsigned size, struct amdgpu_ib *ib)
68 r = amdgpu_sa_bo_new(&adev->ring_tmp_bo,
69 &ib->sa_bo, size, 256);
71 dev_err(adev->dev, "failed to get a new IB (%d)\n", r);
75 ib->ptr = amdgpu_sa_bo_cpu_addr(ib->sa_bo);
78 ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);
85 * amdgpu_ib_free - free an IB (Indirect Buffer)
87 * @adev: amdgpu_device pointer
88 * @ib: IB object to free
89 * @f: the fence SA bo need wait on for the ib alloation
91 * Free an IB (all asics).
93 void amdgpu_ib_free(struct amdgpu_device *adev, struct amdgpu_ib *ib,
96 amdgpu_sa_bo_free(adev, &ib->sa_bo, f);
100 * amdgpu_ib_schedule - schedule an IB (Indirect Buffer) on the ring
102 * @adev: amdgpu_device pointer
103 * @num_ibs: number of IBs to schedule
104 * @ibs: IB objects to schedule
105 * @f: fence created during this submission
107 * Schedule an IB on the associated ring (all asics).
108 * Returns 0 on success, error on failure.
110 * On SI, there are two parallel engines fed from the primary ring,
111 * the CE (Constant Engine) and the DE (Drawing Engine). Since
112 * resource descriptors have moved to memory, the CE allows you to
113 * prime the caches while the DE is updating register state so that
114 * the resource descriptors will be already in cache when the draw is
115 * processed. To accomplish this, the userspace driver submits two
116 * IBs, one for the CE and one for the DE. If there is a CE IB (called
117 * a CONST_IB), it will be put on the ring prior to the DE IB. Prior
118 * to SI there was just a DE IB.
120 int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
121 struct amdgpu_ib *ibs, struct amdgpu_job *job,
122 struct dma_fence **f)
124 struct amdgpu_device *adev = ring->adev;
125 struct amdgpu_ib *ib = &ibs[0];
126 struct dma_fence *tmp = NULL;
127 bool skip_preamble, need_ctx_switch;
128 unsigned patch_offset = ~0;
129 struct amdgpu_vm *vm;
131 uint32_t status = 0, alloc_size;
132 unsigned fence_flags = 0;
136 bool need_pipe_sync = false;
141 /* ring tests don't use a job */
144 fence_ctx = job->base.s_fence->scheduled.context;
150 if (!ring->sched.ready) {
151 dev_err(adev->dev, "couldn't schedule ib on ring <%s>\n", ring->name);
155 if (vm && !job->vmid) {
156 dev_err(adev->dev, "VM IB without ID\n");
160 alloc_size = ring->funcs->emit_frame_size + num_ibs *
161 ring->funcs->emit_ib_size;
163 r = amdgpu_ring_alloc(ring, alloc_size);
165 dev_err(adev->dev, "scheduling IB failed (%d).\n", r);
169 need_ctx_switch = ring->current_ctx != fence_ctx;
170 if (ring->funcs->emit_pipeline_sync && job &&
171 ((tmp = amdgpu_sync_get_fence(&job->sched_sync, NULL)) ||
172 (amdgpu_sriov_vf(adev) && need_ctx_switch) ||
173 amdgpu_vm_need_pipeline_sync(ring, job))) {
174 need_pipe_sync = true;
177 trace_amdgpu_ib_pipe_sync(job, tmp);
182 if (ring->funcs->insert_start)
183 ring->funcs->insert_start(ring);
186 r = amdgpu_vm_flush(ring, job, need_pipe_sync);
188 amdgpu_ring_undo(ring);
193 if (job && ring->funcs->init_cond_exec)
194 patch_offset = amdgpu_ring_init_cond_exec(ring);
197 if (!(adev->flags & AMD_IS_APU))
200 if (ring->funcs->emit_hdp_flush)
201 amdgpu_ring_emit_hdp_flush(ring);
203 amdgpu_asic_flush_hdp(adev, ring);
207 status |= AMDGPU_HAVE_CTX_SWITCH;
209 skip_preamble = ring->current_ctx == fence_ctx;
210 if (job && ring->funcs->emit_cntxcntl) {
211 status |= job->preamble_status;
212 amdgpu_ring_emit_cntxcntl(ring, status);
215 for (i = 0; i < num_ibs; ++i) {
218 /* drop preamble IBs if we don't have a context switch */
219 if ((ib->flags & AMDGPU_IB_FLAG_PREAMBLE) &&
221 !(status & AMDGPU_PREAMBLE_IB_PRESENT_FIRST) &&
222 !amdgpu_sriov_vf(adev)) /* for SRIOV preemption, Preamble CE ib must be inserted anyway */
225 amdgpu_ring_emit_ib(ring, job, ib, status);
226 status &= ~AMDGPU_HAVE_CTX_SWITCH;
229 if (ring->funcs->emit_tmz)
230 amdgpu_ring_emit_tmz(ring, false);
233 if (!(adev->flags & AMD_IS_APU))
235 amdgpu_asic_invalidate_hdp(adev, ring);
237 if (ib->flags & AMDGPU_IB_FLAG_TC_WB_NOT_INVALIDATE)
238 fence_flags |= AMDGPU_FENCE_FLAG_TC_WB_ONLY;
240 /* wrap the last IB with fence */
241 if (job && job->uf_addr) {
242 amdgpu_ring_emit_fence(ring, job->uf_addr, job->uf_sequence,
243 fence_flags | AMDGPU_FENCE_FLAG_64BIT);
246 r = amdgpu_fence_emit(ring, f, fence_flags);
248 dev_err(adev->dev, "failed to emit fence (%d)\n", r);
249 if (job && job->vmid)
250 amdgpu_vmid_reset(adev, ring->funcs->vmhub, job->vmid);
251 amdgpu_ring_undo(ring);
255 if (ring->funcs->insert_end)
256 ring->funcs->insert_end(ring);
258 if (patch_offset != ~0 && ring->funcs->patch_cond_exec)
259 amdgpu_ring_patch_cond_exec(ring, patch_offset);
261 ring->current_ctx = fence_ctx;
262 if (vm && ring->funcs->emit_switch_buffer)
263 amdgpu_ring_emit_switch_buffer(ring);
264 amdgpu_ring_commit(ring);
269 * amdgpu_ib_pool_init - Init the IB (Indirect Buffer) pool
271 * @adev: amdgpu_device pointer
273 * Initialize the suballocator to manage a pool of memory
274 * for use as IBs (all asics).
275 * Returns 0 on success, error on failure.
277 int amdgpu_ib_pool_init(struct amdgpu_device *adev)
281 if (adev->ib_pool_ready) {
284 r = amdgpu_sa_bo_manager_init(adev, &adev->ring_tmp_bo,
285 AMDGPU_IB_POOL_SIZE*64*1024,
286 AMDGPU_GPU_PAGE_SIZE,
287 AMDGPU_GEM_DOMAIN_GTT);
292 adev->ib_pool_ready = true;
293 if (amdgpu_debugfs_sa_init(adev)) {
294 dev_err(adev->dev, "failed to register debugfs file for SA\n");
300 * amdgpu_ib_pool_fini - Free the IB (Indirect Buffer) pool
302 * @adev: amdgpu_device pointer
304 * Tear down the suballocator managing the pool of memory
305 * for use as IBs (all asics).
307 void amdgpu_ib_pool_fini(struct amdgpu_device *adev)
309 if (adev->ib_pool_ready) {
310 amdgpu_sa_bo_manager_fini(adev, &adev->ring_tmp_bo);
311 adev->ib_pool_ready = false;
316 * amdgpu_ib_ring_tests - test IBs on the rings
318 * @adev: amdgpu_device pointer
320 * Test an IB (Indirect Buffer) on each ring.
321 * If the test fails, disable the ring.
322 * Returns 0 on success, error if the primary GFX ring
325 int amdgpu_ib_ring_tests(struct amdgpu_device *adev)
329 long tmo_gfx, tmo_mm;
331 tmo_mm = tmo_gfx = AMDGPU_IB_TEST_TIMEOUT;
332 if (amdgpu_sriov_vf(adev)) {
333 /* for MM engines in hypervisor side they are not scheduled together
334 * with CP and SDMA engines, so even in exclusive mode MM engine could
335 * still running on other VF thus the IB TEST TIMEOUT for MM engines
336 * under SR-IOV should be set to a long time. 8 sec should be enough
337 * for the MM comes back to this VF.
339 tmo_mm = 8 * AMDGPU_IB_TEST_TIMEOUT;
342 if (amdgpu_sriov_runtime(adev)) {
343 /* for CP & SDMA engines since they are scheduled together so
344 * need to make the timeout width enough to cover the time
345 * cost waiting for it coming back under RUNTIME only
347 tmo_gfx = 8 * AMDGPU_IB_TEST_TIMEOUT;
348 } else if (adev->gmc.xgmi.hive_id) {
349 tmo_gfx = AMDGPU_IB_TEST_GFX_XGMI_TIMEOUT;
352 for (i = 0; i < adev->num_rings; ++i) {
353 struct amdgpu_ring *ring = adev->rings[i];
356 /* KIQ rings don't have an IB test because we never submit IBs
357 * to them and they have no interrupt support.
359 if (!ring->sched.ready || !ring->funcs->test_ib)
362 /* MM engine need more time */
363 if (ring->funcs->type == AMDGPU_RING_TYPE_UVD ||
364 ring->funcs->type == AMDGPU_RING_TYPE_VCE ||
365 ring->funcs->type == AMDGPU_RING_TYPE_UVD_ENC ||
366 ring->funcs->type == AMDGPU_RING_TYPE_VCN_DEC ||
367 ring->funcs->type == AMDGPU_RING_TYPE_VCN_ENC ||
368 ring->funcs->type == AMDGPU_RING_TYPE_VCN_JPEG)
373 r = amdgpu_ring_test_ib(ring, tmo);
375 DRM_DEV_DEBUG(adev->dev, "ib test on %s succeeded\n",
380 ring->sched.ready = false;
381 DRM_DEV_ERROR(adev->dev, "IB test failed on %s (%d).\n",
384 if (ring == &adev->gfx.gfx_ring[0]) {
385 /* oh, oh, that's really bad */
386 adev->accel_working = false;
399 #if defined(CONFIG_DEBUG_FS)
401 static int amdgpu_debugfs_sa_info(struct seq_file *m, void *data)
403 struct drm_info_node *node = (struct drm_info_node *) m->private;
404 struct drm_device *dev = node->minor->dev;
405 struct amdgpu_device *adev = dev->dev_private;
407 amdgpu_sa_bo_dump_debug_info(&adev->ring_tmp_bo, m);
413 static const struct drm_info_list amdgpu_debugfs_sa_list[] = {
414 {"amdgpu_sa_info", &amdgpu_debugfs_sa_info, 0, NULL},
419 static int amdgpu_debugfs_sa_init(struct amdgpu_device *adev)
421 #if defined(CONFIG_DEBUG_FS)
422 return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_sa_list, 1);