This source file includes following definitions.
- panfrost_perfcnt_clean_cache_done
- panfrost_perfcnt_sample_done
- panfrost_perfcnt_dump_locked
- panfrost_perfcnt_enable_locked
- panfrost_perfcnt_disable_locked
- panfrost_ioctl_perfcnt_enable
- panfrost_ioctl_perfcnt_dump
- panfrost_perfcnt_close
- panfrost_perfcnt_init
- panfrost_perfcnt_fini
1
2
3
4 #include <drm/drm_file.h>
5 #include <drm/drm_gem_shmem_helper.h>
6 #include <drm/panfrost_drm.h>
7 #include <linux/completion.h>
8 #include <linux/iopoll.h>
9 #include <linux/pm_runtime.h>
10 #include <linux/slab.h>
11 #include <linux/uaccess.h>
12
13 #include "panfrost_device.h"
14 #include "panfrost_features.h"
15 #include "panfrost_gem.h"
16 #include "panfrost_issues.h"
17 #include "panfrost_job.h"
18 #include "panfrost_mmu.h"
19 #include "panfrost_perfcnt.h"
20 #include "panfrost_regs.h"
21
22 #define COUNTERS_PER_BLOCK 64
23 #define BYTES_PER_COUNTER 4
24 #define BLOCKS_PER_COREGROUP 8
25 #define V4_SHADERS_PER_COREGROUP 4
26
27 struct panfrost_perfcnt {
28 struct panfrost_gem_mapping *mapping;
29 size_t bosize;
30 void *buf;
31 struct panfrost_file_priv *user;
32 struct mutex lock;
33 struct completion dump_comp;
34 };
35
36 void panfrost_perfcnt_clean_cache_done(struct panfrost_device *pfdev)
37 {
38 complete(&pfdev->perfcnt->dump_comp);
39 }
40
41 void panfrost_perfcnt_sample_done(struct panfrost_device *pfdev)
42 {
43 gpu_write(pfdev, GPU_CMD, GPU_CMD_CLEAN_CACHES);
44 }
45
46 static int panfrost_perfcnt_dump_locked(struct panfrost_device *pfdev)
47 {
48 u64 gpuva;
49 int ret;
50
51 reinit_completion(&pfdev->perfcnt->dump_comp);
52 gpuva = pfdev->perfcnt->mapping->mmnode.start << PAGE_SHIFT;
53 gpu_write(pfdev, GPU_PERFCNT_BASE_LO, gpuva);
54 gpu_write(pfdev, GPU_PERFCNT_BASE_HI, gpuva >> 32);
55 gpu_write(pfdev, GPU_INT_CLEAR,
56 GPU_IRQ_CLEAN_CACHES_COMPLETED |
57 GPU_IRQ_PERFCNT_SAMPLE_COMPLETED);
58 gpu_write(pfdev, GPU_CMD, GPU_CMD_PERFCNT_SAMPLE);
59 ret = wait_for_completion_interruptible_timeout(&pfdev->perfcnt->dump_comp,
60 msecs_to_jiffies(1000));
61 if (!ret)
62 ret = -ETIMEDOUT;
63 else if (ret > 0)
64 ret = 0;
65
66 return ret;
67 }
68
69 static int panfrost_perfcnt_enable_locked(struct panfrost_device *pfdev,
70 struct drm_file *file_priv,
71 unsigned int counterset)
72 {
73 struct panfrost_file_priv *user = file_priv->driver_priv;
74 struct panfrost_perfcnt *perfcnt = pfdev->perfcnt;
75 struct drm_gem_shmem_object *bo;
76 u32 cfg, as;
77 int ret;
78
79 if (user == perfcnt->user)
80 return 0;
81 else if (perfcnt->user)
82 return -EBUSY;
83
84 ret = pm_runtime_get_sync(pfdev->dev);
85 if (ret < 0)
86 return ret;
87
88 bo = drm_gem_shmem_create(pfdev->ddev, perfcnt->bosize);
89 if (IS_ERR(bo))
90 return PTR_ERR(bo);
91
92
93 ret = panfrost_gem_open(&bo->base, file_priv);
94 if (ret)
95 goto err_put_bo;
96
97 perfcnt->mapping = panfrost_gem_mapping_get(to_panfrost_bo(&bo->base),
98 user);
99 if (!perfcnt->mapping) {
100 ret = -EINVAL;
101 goto err_close_bo;
102 }
103
104 perfcnt->buf = drm_gem_shmem_vmap(&bo->base);
105 if (IS_ERR(perfcnt->buf)) {
106 ret = PTR_ERR(perfcnt->buf);
107 goto err_put_mapping;
108 }
109
110
111
112
113
114 reinit_completion(&pfdev->perfcnt->dump_comp);
115 gpu_write(pfdev, GPU_INT_CLEAR,
116 GPU_IRQ_CLEAN_CACHES_COMPLETED |
117 GPU_IRQ_PERFCNT_SAMPLE_COMPLETED);
118 gpu_write(pfdev, GPU_CMD, GPU_CMD_PERFCNT_CLEAR);
119 gpu_write(pfdev, GPU_CMD, GPU_CMD_CLEAN_INV_CACHES);
120 ret = wait_for_completion_timeout(&pfdev->perfcnt->dump_comp,
121 msecs_to_jiffies(1000));
122 if (!ret) {
123 ret = -ETIMEDOUT;
124 goto err_vunmap;
125 }
126
127 perfcnt->user = user;
128
129 as = panfrost_mmu_as_get(pfdev, perfcnt->mapping->mmu);
130 cfg = GPU_PERFCNT_CFG_AS(as) |
131 GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_MANUAL);
132
133
134
135
136
137 if (panfrost_model_is_bifrost(pfdev))
138 cfg |= GPU_PERFCNT_CFG_SETSEL(counterset);
139
140 gpu_write(pfdev, GPU_PRFCNT_JM_EN, 0xffffffff);
141 gpu_write(pfdev, GPU_PRFCNT_SHADER_EN, 0xffffffff);
142 gpu_write(pfdev, GPU_PRFCNT_MMU_L2_EN, 0xffffffff);
143
144
145
146
147
148 if (panfrost_has_hw_issue(pfdev, HW_ISSUE_8186))
149 gpu_write(pfdev, GPU_PRFCNT_TILER_EN, 0);
150 else
151 gpu_write(pfdev, GPU_PRFCNT_TILER_EN, 0xffffffff);
152
153 gpu_write(pfdev, GPU_PERFCNT_CFG, cfg);
154
155 if (panfrost_has_hw_issue(pfdev, HW_ISSUE_8186))
156 gpu_write(pfdev, GPU_PRFCNT_TILER_EN, 0xffffffff);
157
158
159 drm_gem_object_put_unlocked(&bo->base);
160
161 return 0;
162
163 err_vunmap:
164 drm_gem_shmem_vunmap(&bo->base, perfcnt->buf);
165 err_put_mapping:
166 panfrost_gem_mapping_put(perfcnt->mapping);
167 err_close_bo:
168 panfrost_gem_close(&bo->base, file_priv);
169 err_put_bo:
170 drm_gem_object_put_unlocked(&bo->base);
171 return ret;
172 }
173
174 static int panfrost_perfcnt_disable_locked(struct panfrost_device *pfdev,
175 struct drm_file *file_priv)
176 {
177 struct panfrost_file_priv *user = file_priv->driver_priv;
178 struct panfrost_perfcnt *perfcnt = pfdev->perfcnt;
179
180 if (user != perfcnt->user)
181 return -EINVAL;
182
183 gpu_write(pfdev, GPU_PRFCNT_JM_EN, 0x0);
184 gpu_write(pfdev, GPU_PRFCNT_SHADER_EN, 0x0);
185 gpu_write(pfdev, GPU_PRFCNT_MMU_L2_EN, 0x0);
186 gpu_write(pfdev, GPU_PRFCNT_TILER_EN, 0);
187 gpu_write(pfdev, GPU_PERFCNT_CFG,
188 GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_OFF));
189
190 perfcnt->user = NULL;
191 drm_gem_shmem_vunmap(&perfcnt->mapping->obj->base.base, perfcnt->buf);
192 perfcnt->buf = NULL;
193 panfrost_gem_close(&perfcnt->mapping->obj->base.base, file_priv);
194 panfrost_mmu_as_put(pfdev, perfcnt->mapping->mmu);
195 panfrost_gem_mapping_put(perfcnt->mapping);
196 perfcnt->mapping = NULL;
197 pm_runtime_mark_last_busy(pfdev->dev);
198 pm_runtime_put_autosuspend(pfdev->dev);
199
200 return 0;
201 }
202
203 int panfrost_ioctl_perfcnt_enable(struct drm_device *dev, void *data,
204 struct drm_file *file_priv)
205 {
206 struct panfrost_device *pfdev = dev->dev_private;
207 struct panfrost_perfcnt *perfcnt = pfdev->perfcnt;
208 struct drm_panfrost_perfcnt_enable *req = data;
209 int ret;
210
211 ret = panfrost_unstable_ioctl_check();
212 if (ret)
213 return ret;
214
215
216 if (req->counterset > (panfrost_model_is_bifrost(pfdev) ? 1 : 0))
217 return -EINVAL;
218
219 mutex_lock(&perfcnt->lock);
220 if (req->enable)
221 ret = panfrost_perfcnt_enable_locked(pfdev, file_priv,
222 req->counterset);
223 else
224 ret = panfrost_perfcnt_disable_locked(pfdev, file_priv);
225 mutex_unlock(&perfcnt->lock);
226
227 return ret;
228 }
229
230 int panfrost_ioctl_perfcnt_dump(struct drm_device *dev, void *data,
231 struct drm_file *file_priv)
232 {
233 struct panfrost_device *pfdev = dev->dev_private;
234 struct panfrost_perfcnt *perfcnt = pfdev->perfcnt;
235 struct drm_panfrost_perfcnt_dump *req = data;
236 void __user *user_ptr = (void __user *)(uintptr_t)req->buf_ptr;
237 int ret;
238
239 ret = panfrost_unstable_ioctl_check();
240 if (ret)
241 return ret;
242
243 mutex_lock(&perfcnt->lock);
244 if (perfcnt->user != file_priv->driver_priv) {
245 ret = -EINVAL;
246 goto out;
247 }
248
249 ret = panfrost_perfcnt_dump_locked(pfdev);
250 if (ret)
251 goto out;
252
253 if (copy_to_user(user_ptr, perfcnt->buf, perfcnt->bosize))
254 ret = -EFAULT;
255
256 out:
257 mutex_unlock(&perfcnt->lock);
258
259 return ret;
260 }
261
262 void panfrost_perfcnt_close(struct drm_file *file_priv)
263 {
264 struct panfrost_file_priv *pfile = file_priv->driver_priv;
265 struct panfrost_device *pfdev = pfile->pfdev;
266 struct panfrost_perfcnt *perfcnt = pfdev->perfcnt;
267
268 pm_runtime_get_sync(pfdev->dev);
269 mutex_lock(&perfcnt->lock);
270 if (perfcnt->user == pfile)
271 panfrost_perfcnt_disable_locked(pfdev, file_priv);
272 mutex_unlock(&perfcnt->lock);
273 pm_runtime_mark_last_busy(pfdev->dev);
274 pm_runtime_put_autosuspend(pfdev->dev);
275 }
276
277 int panfrost_perfcnt_init(struct panfrost_device *pfdev)
278 {
279 struct panfrost_perfcnt *perfcnt;
280 size_t size;
281
282 if (panfrost_has_hw_feature(pfdev, HW_FEATURE_V4)) {
283 unsigned int ncoregroups;
284
285 ncoregroups = hweight64(pfdev->features.l2_present);
286 size = ncoregroups * BLOCKS_PER_COREGROUP *
287 COUNTERS_PER_BLOCK * BYTES_PER_COUNTER;
288 } else {
289 unsigned int nl2c, ncores;
290
291
292
293
294
295 nl2c = ((pfdev->features.mem_features >> 8) & GENMASK(3, 0)) + 1;
296
297
298
299
300
301
302 ncores = fls64(pfdev->features.shader_present);
303
304
305
306
307
308 size = (nl2c + ncores + 2) *
309 COUNTERS_PER_BLOCK * BYTES_PER_COUNTER;
310 }
311
312 perfcnt = devm_kzalloc(pfdev->dev, sizeof(*perfcnt), GFP_KERNEL);
313 if (!perfcnt)
314 return -ENOMEM;
315
316 perfcnt->bosize = size;
317
318
319 gpu_write(pfdev, GPU_PERFCNT_CFG,
320 GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_OFF));
321 gpu_write(pfdev, GPU_PRFCNT_JM_EN, 0);
322 gpu_write(pfdev, GPU_PRFCNT_SHADER_EN, 0);
323 gpu_write(pfdev, GPU_PRFCNT_MMU_L2_EN, 0);
324 gpu_write(pfdev, GPU_PRFCNT_TILER_EN, 0);
325
326 init_completion(&perfcnt->dump_comp);
327 mutex_init(&perfcnt->lock);
328 pfdev->perfcnt = perfcnt;
329
330 return 0;
331 }
332
333 void panfrost_perfcnt_fini(struct panfrost_device *pfdev)
334 {
335
336 gpu_write(pfdev, GPU_PERFCNT_CFG,
337 GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_OFF));
338 gpu_write(pfdev, GPU_PRFCNT_JM_EN, 0);
339 gpu_write(pfdev, GPU_PRFCNT_SHADER_EN, 0);
340 gpu_write(pfdev, GPU_PRFCNT_MMU_L2_EN, 0);
341 gpu_write(pfdev, GPU_PRFCNT_TILER_EN, 0);
342 }