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d38ceaf9 AD |
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 | */ | |
45 | static 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 | */ | |
b07c60c0 | 58 | int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm, |
d38ceaf9 AD |
59 | unsigned size, struct amdgpu_ib *ib) |
60 | { | |
d38ceaf9 AD |
61 | int r; |
62 | ||
63 | if (size) { | |
bbf0b345 | 64 | r = amdgpu_sa_bo_new(&adev->ring_tmp_bo, |
d38ceaf9 AD |
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); | |
d38ceaf9 AD |
75 | } |
76 | ||
d38ceaf9 | 77 | ib->vm = vm; |
4ff37a83 | 78 | ib->vm_id = 0; |
d38ceaf9 AD |
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 | * | |
89 | * Free an IB (all asics). | |
90 | */ | |
91 | void amdgpu_ib_free(struct amdgpu_device *adev, struct amdgpu_ib *ib) | |
92 | { | |
4ce9891e | 93 | amdgpu_sa_bo_free(adev, &ib->sa_bo, &ib->fence->base); |
6ef68c17 CK |
94 | if (ib->fence) |
95 | fence_put(&ib->fence->base); | |
d38ceaf9 AD |
96 | } |
97 | ||
98 | /** | |
99 | * amdgpu_ib_schedule - schedule an IB (Indirect Buffer) on the ring | |
100 | * | |
101 | * @adev: amdgpu_device pointer | |
102 | * @num_ibs: number of IBs to schedule | |
103 | * @ibs: IB objects to schedule | |
104 | * @owner: owner for creating the fences | |
ec72b800 | 105 | * @f: fence created during this submission |
d38ceaf9 AD |
106 | * |
107 | * Schedule an IB on the associated ring (all asics). | |
108 | * Returns 0 on success, error on failure. | |
109 | * | |
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. | |
119 | */ | |
b07c60c0 | 120 | int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs, |
ec72b800 | 121 | struct amdgpu_ib *ibs, void *owner, |
e86f9cee | 122 | struct fence *last_vm_update, |
ec72b800 | 123 | struct fence **f) |
d38ceaf9 | 124 | { |
b07c60c0 | 125 | struct amdgpu_device *adev = ring->adev; |
d38ceaf9 | 126 | struct amdgpu_ib *ib = &ibs[0]; |
3cb485f3 | 127 | struct amdgpu_ctx *ctx, *old_ctx; |
d919ad49 | 128 | struct amdgpu_vm *vm; |
d38ceaf9 AD |
129 | unsigned i; |
130 | int r = 0; | |
d38ceaf9 AD |
131 | |
132 | if (num_ibs == 0) | |
133 | return -EINVAL; | |
134 | ||
3cb485f3 | 135 | ctx = ibs->ctx; |
d919ad49 CK |
136 | vm = ibs->vm; |
137 | ||
d38ceaf9 AD |
138 | if (!ring->ready) { |
139 | dev_err(adev->dev, "couldn't schedule ib\n"); | |
140 | return -EINVAL; | |
141 | } | |
be86c606 | 142 | |
4ff37a83 | 143 | if (vm && !ibs->vm_id) { |
8d0a7cea CK |
144 | dev_err(adev->dev, "VM IB without ID\n"); |
145 | return -EINVAL; | |
146 | } | |
147 | ||
867d0517 | 148 | r = amdgpu_ring_alloc(ring, 256 * num_ibs); |
d38ceaf9 AD |
149 | if (r) { |
150 | dev_err(adev->dev, "scheduling IB failed (%d).\n", r); | |
151 | return r; | |
152 | } | |
153 | ||
d38ceaf9 AD |
154 | if (vm) { |
155 | /* do context switch */ | |
4ff37a83 | 156 | amdgpu_vm_flush(ring, ib->vm_id, ib->vm_pd_addr); |
d38ceaf9 | 157 | |
e722b71a | 158 | if (ring->funcs->emit_gds_switch) |
4ff37a83 | 159 | amdgpu_ring_emit_gds_switch(ring, ib->vm_id, |
e722b71a | 160 | ib->gds_base, ib->gds_size, |
161 | ib->gws_base, ib->gws_size, | |
162 | ib->oa_base, ib->oa_size); | |
d38ceaf9 | 163 | |
e722b71a | 164 | if (ring->funcs->emit_hdp_flush) |
165 | amdgpu_ring_emit_hdp_flush(ring); | |
166 | } | |
d2edb07b | 167 | |
3cb485f3 | 168 | old_ctx = ring->current_ctx; |
d38ceaf9 AD |
169 | for (i = 0; i < num_ibs; ++i) { |
170 | ib = &ibs[i]; | |
171 | ||
b07c60c0 | 172 | if (ib->ctx != ctx || ib->vm != vm) { |
3cb485f3 | 173 | ring->current_ctx = old_ctx; |
a27de35c | 174 | amdgpu_ring_undo(ring); |
d38ceaf9 AD |
175 | return -EINVAL; |
176 | } | |
d38ceaf9 | 177 | amdgpu_ring_emit_ib(ring, ib); |
3cb485f3 | 178 | ring->current_ctx = ctx; |
d38ceaf9 AD |
179 | } |
180 | ||
181 | r = amdgpu_fence_emit(ring, owner, &ib->fence); | |
182 | if (r) { | |
183 | dev_err(adev->dev, "failed to emit fence (%d)\n", r); | |
3cb485f3 | 184 | ring->current_ctx = old_ctx; |
a27de35c | 185 | amdgpu_ring_undo(ring); |
d38ceaf9 AD |
186 | return r; |
187 | } | |
188 | ||
189 | /* wrap the last IB with fence */ | |
190 | if (ib->user) { | |
191 | uint64_t addr = amdgpu_bo_gpu_offset(ib->user->bo); | |
192 | addr += ib->user->offset; | |
5430a3ff | 193 | amdgpu_ring_emit_fence(ring, addr, ib->sequence, |
890ee23f | 194 | AMDGPU_FENCE_FLAG_64BIT); |
d38ceaf9 AD |
195 | } |
196 | ||
ec72b800 CK |
197 | if (f) |
198 | *f = fence_get(&ib->fence->base); | |
199 | ||
a27de35c | 200 | amdgpu_ring_commit(ring); |
d38ceaf9 AD |
201 | return 0; |
202 | } | |
203 | ||
204 | /** | |
205 | * amdgpu_ib_pool_init - Init the IB (Indirect Buffer) pool | |
206 | * | |
207 | * @adev: amdgpu_device pointer | |
208 | * | |
209 | * Initialize the suballocator to manage a pool of memory | |
210 | * for use as IBs (all asics). | |
211 | * Returns 0 on success, error on failure. | |
212 | */ | |
213 | int amdgpu_ib_pool_init(struct amdgpu_device *adev) | |
214 | { | |
215 | int r; | |
216 | ||
217 | if (adev->ib_pool_ready) { | |
218 | return 0; | |
219 | } | |
220 | r = amdgpu_sa_bo_manager_init(adev, &adev->ring_tmp_bo, | |
221 | AMDGPU_IB_POOL_SIZE*64*1024, | |
222 | AMDGPU_GPU_PAGE_SIZE, | |
223 | AMDGPU_GEM_DOMAIN_GTT); | |
224 | if (r) { | |
225 | return r; | |
226 | } | |
227 | ||
228 | r = amdgpu_sa_bo_manager_start(adev, &adev->ring_tmp_bo); | |
229 | if (r) { | |
230 | return r; | |
231 | } | |
232 | ||
233 | adev->ib_pool_ready = true; | |
234 | if (amdgpu_debugfs_sa_init(adev)) { | |
235 | dev_err(adev->dev, "failed to register debugfs file for SA\n"); | |
236 | } | |
237 | return 0; | |
238 | } | |
239 | ||
240 | /** | |
241 | * amdgpu_ib_pool_fini - Free the IB (Indirect Buffer) pool | |
242 | * | |
243 | * @adev: amdgpu_device pointer | |
244 | * | |
245 | * Tear down the suballocator managing the pool of memory | |
246 | * for use as IBs (all asics). | |
247 | */ | |
248 | void amdgpu_ib_pool_fini(struct amdgpu_device *adev) | |
249 | { | |
250 | if (adev->ib_pool_ready) { | |
251 | amdgpu_sa_bo_manager_suspend(adev, &adev->ring_tmp_bo); | |
252 | amdgpu_sa_bo_manager_fini(adev, &adev->ring_tmp_bo); | |
253 | adev->ib_pool_ready = false; | |
254 | } | |
255 | } | |
256 | ||
257 | /** | |
258 | * amdgpu_ib_ring_tests - test IBs on the rings | |
259 | * | |
260 | * @adev: amdgpu_device pointer | |
261 | * | |
262 | * Test an IB (Indirect Buffer) on each ring. | |
263 | * If the test fails, disable the ring. | |
264 | * Returns 0 on success, error if the primary GFX ring | |
265 | * IB test fails. | |
266 | */ | |
267 | int amdgpu_ib_ring_tests(struct amdgpu_device *adev) | |
268 | { | |
269 | unsigned i; | |
270 | int r; | |
271 | ||
272 | for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { | |
273 | struct amdgpu_ring *ring = adev->rings[i]; | |
274 | ||
275 | if (!ring || !ring->ready) | |
276 | continue; | |
277 | ||
278 | r = amdgpu_ring_test_ib(ring); | |
279 | if (r) { | |
280 | ring->ready = false; | |
d38ceaf9 AD |
281 | |
282 | if (ring == &adev->gfx.gfx_ring[0]) { | |
283 | /* oh, oh, that's really bad */ | |
284 | DRM_ERROR("amdgpu: failed testing IB on GFX ring (%d).\n", r); | |
285 | adev->accel_working = false; | |
286 | return r; | |
287 | ||
288 | } else { | |
289 | /* still not good, but we can live with it */ | |
290 | DRM_ERROR("amdgpu: failed testing IB on ring %d (%d).\n", i, r); | |
291 | } | |
292 | } | |
293 | } | |
294 | return 0; | |
295 | } | |
296 | ||
297 | /* | |
298 | * Debugfs info | |
299 | */ | |
300 | #if defined(CONFIG_DEBUG_FS) | |
301 | ||
302 | static int amdgpu_debugfs_sa_info(struct seq_file *m, void *data) | |
303 | { | |
304 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
305 | struct drm_device *dev = node->minor->dev; | |
306 | struct amdgpu_device *adev = dev->dev_private; | |
307 | ||
308 | amdgpu_sa_bo_dump_debug_info(&adev->ring_tmp_bo, m); | |
309 | ||
310 | return 0; | |
311 | ||
312 | } | |
313 | ||
314 | static struct drm_info_list amdgpu_debugfs_sa_list[] = { | |
315 | {"amdgpu_sa_info", &amdgpu_debugfs_sa_info, 0, NULL}, | |
316 | }; | |
317 | ||
318 | #endif | |
319 | ||
320 | static int amdgpu_debugfs_sa_init(struct amdgpu_device *adev) | |
321 | { | |
322 | #if defined(CONFIG_DEBUG_FS) | |
323 | return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_sa_list, 1); | |
324 | #else | |
325 | return 0; | |
326 | #endif | |
327 | } |