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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2013-2016 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
5 */
6
7#ifdef CONFIG_DEBUG_FS
8
9#include <linux/debugfs.h>
10#include <linux/fault-inject.h>
11
12#include <drm/drm_debugfs.h>
13#include <drm/drm_fb_helper.h>
14#include <drm/drm_file.h>
15#include <drm/drm_framebuffer.h>
16
17#include "msm_drv.h"
18#include "msm_gpu.h"
19#include "msm_kms.h"
20#include "msm_debugfs.h"
21#include "disp/msm_disp_snapshot.h"
22
23/*
24 * GPU Snapshot:
25 */
26
27struct msm_gpu_show_priv {
28 struct msm_gpu_state *state;
29 struct drm_device *dev;
30};
31
32static int msm_gpu_show(struct seq_file *m, void *arg)
33{
34 struct drm_printer p = drm_seq_file_printer(m);
35 struct msm_gpu_show_priv *show_priv = m->private;
36 struct msm_drm_private *priv = show_priv->dev->dev_private;
37 struct msm_gpu *gpu = priv->gpu;
38 int ret;
39
40 ret = mutex_lock_interruptible(&gpu->lock);
41 if (ret)
42 return ret;
43
44 drm_printf(&p, "%s Status:\n", gpu->name);
45 gpu->funcs->show(gpu, show_priv->state, &p);
46
47 mutex_unlock(&gpu->lock);
48
49 return 0;
50}
51
52static int msm_gpu_release(struct inode *inode, struct file *file)
53{
54 struct seq_file *m = file->private_data;
55 struct msm_gpu_show_priv *show_priv = m->private;
56 struct msm_drm_private *priv = show_priv->dev->dev_private;
57 struct msm_gpu *gpu = priv->gpu;
58
59 mutex_lock(&gpu->lock);
60 gpu->funcs->gpu_state_put(show_priv->state);
61 mutex_unlock(&gpu->lock);
62
63 kfree(show_priv);
64
65 return single_release(inode, file);
66}
67
68static int msm_gpu_open(struct inode *inode, struct file *file)
69{
70 struct drm_device *dev = inode->i_private;
71 struct msm_drm_private *priv = dev->dev_private;
72 struct msm_gpu *gpu = priv->gpu;
73 struct msm_gpu_show_priv *show_priv;
74 int ret;
75
76 if (!gpu || !gpu->funcs->gpu_state_get)
77 return -ENODEV;
78
79 show_priv = kmalloc(sizeof(*show_priv), GFP_KERNEL);
80 if (!show_priv)
81 return -ENOMEM;
82
83 ret = mutex_lock_interruptible(&gpu->lock);
84 if (ret)
85 goto free_priv;
86
87 pm_runtime_get_sync(&gpu->pdev->dev);
88 msm_gpu_hw_init(gpu);
89 show_priv->state = gpu->funcs->gpu_state_get(gpu);
90 pm_runtime_put_sync(&gpu->pdev->dev);
91
92 mutex_unlock(&gpu->lock);
93
94 if (IS_ERR(show_priv->state)) {
95 ret = PTR_ERR(show_priv->state);
96 goto free_priv;
97 }
98
99 show_priv->dev = dev;
100
101 ret = single_open(file, msm_gpu_show, show_priv);
102 if (ret)
103 goto free_priv;
104
105 return 0;
106
107free_priv:
108 kfree(show_priv);
109 return ret;
110}
111
112static const struct file_operations msm_gpu_fops = {
113 .owner = THIS_MODULE,
114 .open = msm_gpu_open,
115 .read = seq_read,
116 .llseek = seq_lseek,
117 .release = msm_gpu_release,
118};
119
120/*
121 * Display Snapshot:
122 */
123
124static int msm_kms_show(struct seq_file *m, void *arg)
125{
126 struct drm_printer p = drm_seq_file_printer(m);
127 struct msm_disp_state *state = m->private;
128
129 msm_disp_state_print(state, &p);
130
131 return 0;
132}
133
134static int msm_kms_release(struct inode *inode, struct file *file)
135{
136 struct seq_file *m = file->private_data;
137 struct msm_disp_state *state = m->private;
138
139 msm_disp_state_free(state);
140
141 return single_release(inode, file);
142}
143
144static int msm_kms_open(struct inode *inode, struct file *file)
145{
146 struct drm_device *dev = inode->i_private;
147 struct msm_drm_private *priv = dev->dev_private;
148 struct msm_disp_state *state;
149 int ret;
150
151 if (!priv->kms)
152 return -ENODEV;
153
154 ret = mutex_lock_interruptible(&priv->kms->dump_mutex);
155 if (ret)
156 return ret;
157
158 state = msm_disp_snapshot_state_sync(priv->kms);
159
160 mutex_unlock(&priv->kms->dump_mutex);
161
162 if (IS_ERR(state)) {
163 return PTR_ERR(state);
164 }
165
166 ret = single_open(file, msm_kms_show, state);
167 if (ret) {
168 msm_disp_state_free(state);
169 return ret;
170 }
171
172 return 0;
173}
174
175static const struct file_operations msm_kms_fops = {
176 .owner = THIS_MODULE,
177 .open = msm_kms_open,
178 .read = seq_read,
179 .llseek = seq_lseek,
180 .release = msm_kms_release,
181};
182
183/*
184 * Other debugfs:
185 */
186
187static unsigned long last_shrink_freed;
188
189static int
190shrink_get(void *data, u64 *val)
191{
192 *val = last_shrink_freed;
193
194 return 0;
195}
196
197static int
198shrink_set(void *data, u64 val)
199{
200 struct drm_device *dev = data;
201
202 last_shrink_freed = msm_gem_shrinker_shrink(dev, val);
203
204 return 0;
205}
206
207DEFINE_DEBUGFS_ATTRIBUTE(shrink_fops,
208 shrink_get, shrink_set,
209 "0x%08llx\n");
210
211
212static int msm_gem_show(struct seq_file *m, void *arg)
213{
214 struct drm_info_node *node = m->private;
215 struct drm_device *dev = node->minor->dev;
216 struct msm_drm_private *priv = dev->dev_private;
217 int ret;
218
219 ret = mutex_lock_interruptible(&priv->obj_lock);
220 if (ret)
221 return ret;
222
223 msm_gem_describe_objects(&priv->objects, m);
224
225 mutex_unlock(&priv->obj_lock);
226
227 return 0;
228}
229
230static int msm_mm_show(struct seq_file *m, void *arg)
231{
232 struct drm_info_node *node = m->private;
233 struct drm_device *dev = node->minor->dev;
234 struct drm_printer p = drm_seq_file_printer(m);
235
236 drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
237
238 return 0;
239}
240
241static int msm_fb_show(struct seq_file *m, void *arg)
242{
243 struct drm_info_node *node = m->private;
244 struct drm_device *dev = node->minor->dev;
245 struct drm_framebuffer *fb, *fbdev_fb = NULL;
246
247 if (dev->fb_helper && dev->fb_helper->fb) {
248 seq_printf(m, "fbcon ");
249 fbdev_fb = dev->fb_helper->fb;
250 msm_framebuffer_describe(fbdev_fb, m);
251 }
252
253 mutex_lock(&dev->mode_config.fb_lock);
254 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
255 if (fb == fbdev_fb)
256 continue;
257
258 seq_printf(m, "user ");
259 msm_framebuffer_describe(fb, m);
260 }
261 mutex_unlock(&dev->mode_config.fb_lock);
262
263 return 0;
264}
265
266static struct drm_info_list msm_debugfs_list[] = {
267 {"gem", msm_gem_show},
268 { "mm", msm_mm_show },
269};
270
271static struct drm_info_list msm_kms_debugfs_list[] = {
272 { "fb", msm_fb_show },
273};
274
275static int late_init_minor(struct drm_minor *minor)
276{
277 int ret;
278
279 if (!minor)
280 return 0;
281
282 ret = msm_rd_debugfs_init(minor);
283 if (ret) {
284 DRM_DEV_ERROR(minor->dev->dev, "could not install rd debugfs\n");
285 return ret;
286 }
287
288 ret = msm_perf_debugfs_init(minor);
289 if (ret) {
290 DRM_DEV_ERROR(minor->dev->dev, "could not install perf debugfs\n");
291 return ret;
292 }
293
294 return 0;
295}
296
297int msm_debugfs_late_init(struct drm_device *dev)
298{
299 int ret;
300 ret = late_init_minor(dev->primary);
301 if (ret)
302 return ret;
303 ret = late_init_minor(dev->render);
304 return ret;
305}
306
307static void msm_debugfs_gpu_init(struct drm_minor *minor)
308{
309 struct drm_device *dev = minor->dev;
310 struct msm_drm_private *priv = dev->dev_private;
311 struct dentry *gpu_devfreq;
312
313 debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root,
314 dev, &msm_gpu_fops);
315
316 debugfs_create_u32("hangcheck_period_ms", 0600, minor->debugfs_root,
317 &priv->hangcheck_period);
318
319 debugfs_create_bool("disable_err_irq", 0600, minor->debugfs_root,
320 &priv->disable_err_irq);
321
322 gpu_devfreq = debugfs_create_dir("devfreq", minor->debugfs_root);
323
324 debugfs_create_bool("idle_clamp",0600, gpu_devfreq,
325 &priv->gpu_clamp_to_idle);
326
327 debugfs_create_u32("upthreshold",0600, gpu_devfreq,
328 &priv->gpu_devfreq_config.upthreshold);
329
330 debugfs_create_u32("downdifferential",0600, gpu_devfreq,
331 &priv->gpu_devfreq_config.downdifferential);
332}
333
334void msm_debugfs_init(struct drm_minor *minor)
335{
336 struct drm_device *dev = minor->dev;
337 struct msm_drm_private *priv = dev->dev_private;
338
339 drm_debugfs_create_files(msm_debugfs_list,
340 ARRAY_SIZE(msm_debugfs_list),
341 minor->debugfs_root, minor);
342
343 if (priv->gpu_pdev)
344 msm_debugfs_gpu_init(minor);
345
346 if (priv->kms) {
347 drm_debugfs_create_files(msm_kms_debugfs_list,
348 ARRAY_SIZE(msm_kms_debugfs_list),
349 minor->debugfs_root, minor);
350 debugfs_create_file("kms", S_IRUSR, minor->debugfs_root,
351 dev, &msm_kms_fops);
352 }
353
354 debugfs_create_file("shrink", S_IRWXU, minor->debugfs_root,
355 dev, &shrink_fops);
356
357 if (priv->kms && priv->kms->funcs->debugfs_init)
358 priv->kms->funcs->debugfs_init(priv->kms, minor);
359
360#ifdef CONFIG_FAULT_INJECTION
361 fault_create_debugfs_attr("fail_gem_alloc", minor->debugfs_root,
362 &fail_gem_alloc);
363 fault_create_debugfs_attr("fail_gem_iova", minor->debugfs_root,
364 &fail_gem_iova);
365#endif
366}
367#endif
368
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2013-2016 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
5 */
6
7#ifdef CONFIG_DEBUG_FS
8
9#include <linux/debugfs.h>
10#include <linux/fault-inject.h>
11
12#include <drm/drm_debugfs.h>
13#include <drm/drm_file.h>
14#include <drm/drm_framebuffer.h>
15
16#include "msm_drv.h"
17#include "msm_gpu.h"
18#include "msm_kms.h"
19#include "msm_debugfs.h"
20#include "disp/msm_disp_snapshot.h"
21
22/*
23 * GPU Snapshot:
24 */
25
26struct msm_gpu_show_priv {
27 struct msm_gpu_state *state;
28 struct drm_device *dev;
29};
30
31static int msm_gpu_show(struct seq_file *m, void *arg)
32{
33 struct drm_printer p = drm_seq_file_printer(m);
34 struct msm_gpu_show_priv *show_priv = m->private;
35 struct msm_drm_private *priv = show_priv->dev->dev_private;
36 struct msm_gpu *gpu = priv->gpu;
37 int ret;
38
39 ret = mutex_lock_interruptible(&gpu->lock);
40 if (ret)
41 return ret;
42
43 drm_printf(&p, "%s Status:\n", gpu->name);
44 gpu->funcs->show(gpu, show_priv->state, &p);
45
46 mutex_unlock(&gpu->lock);
47
48 return 0;
49}
50
51static int msm_gpu_release(struct inode *inode, struct file *file)
52{
53 struct seq_file *m = file->private_data;
54 struct msm_gpu_show_priv *show_priv = m->private;
55 struct msm_drm_private *priv = show_priv->dev->dev_private;
56 struct msm_gpu *gpu = priv->gpu;
57
58 mutex_lock(&gpu->lock);
59 gpu->funcs->gpu_state_put(show_priv->state);
60 mutex_unlock(&gpu->lock);
61
62 kfree(show_priv);
63
64 return single_release(inode, file);
65}
66
67static int msm_gpu_open(struct inode *inode, struct file *file)
68{
69 struct drm_device *dev = inode->i_private;
70 struct msm_drm_private *priv = dev->dev_private;
71 struct msm_gpu *gpu = priv->gpu;
72 struct msm_gpu_show_priv *show_priv;
73 int ret;
74
75 if (!gpu || !gpu->funcs->gpu_state_get)
76 return -ENODEV;
77
78 show_priv = kmalloc(sizeof(*show_priv), GFP_KERNEL);
79 if (!show_priv)
80 return -ENOMEM;
81
82 ret = mutex_lock_interruptible(&gpu->lock);
83 if (ret)
84 goto free_priv;
85
86 pm_runtime_get_sync(&gpu->pdev->dev);
87 msm_gpu_hw_init(gpu);
88 show_priv->state = gpu->funcs->gpu_state_get(gpu);
89 pm_runtime_put_sync(&gpu->pdev->dev);
90
91 mutex_unlock(&gpu->lock);
92
93 if (IS_ERR(show_priv->state)) {
94 ret = PTR_ERR(show_priv->state);
95 goto free_priv;
96 }
97
98 show_priv->dev = dev;
99
100 ret = single_open(file, msm_gpu_show, show_priv);
101 if (ret)
102 goto free_priv;
103
104 return 0;
105
106free_priv:
107 kfree(show_priv);
108 return ret;
109}
110
111static const struct file_operations msm_gpu_fops = {
112 .owner = THIS_MODULE,
113 .open = msm_gpu_open,
114 .read = seq_read,
115 .llseek = seq_lseek,
116 .release = msm_gpu_release,
117};
118
119/*
120 * Display Snapshot:
121 */
122
123static int msm_kms_show(struct seq_file *m, void *arg)
124{
125 struct drm_printer p = drm_seq_file_printer(m);
126 struct msm_disp_state *state = m->private;
127
128 msm_disp_state_print(state, &p);
129
130 return 0;
131}
132
133static int msm_kms_release(struct inode *inode, struct file *file)
134{
135 struct seq_file *m = file->private_data;
136 struct msm_disp_state *state = m->private;
137
138 msm_disp_state_free(state);
139
140 return single_release(inode, file);
141}
142
143static int msm_kms_open(struct inode *inode, struct file *file)
144{
145 struct drm_device *dev = inode->i_private;
146 struct msm_drm_private *priv = dev->dev_private;
147 struct msm_disp_state *state;
148 int ret;
149
150 if (!priv->kms)
151 return -ENODEV;
152
153 ret = mutex_lock_interruptible(&priv->kms->dump_mutex);
154 if (ret)
155 return ret;
156
157 state = msm_disp_snapshot_state_sync(priv->kms);
158
159 mutex_unlock(&priv->kms->dump_mutex);
160
161 if (IS_ERR(state)) {
162 return PTR_ERR(state);
163 }
164
165 ret = single_open(file, msm_kms_show, state);
166 if (ret) {
167 msm_disp_state_free(state);
168 return ret;
169 }
170
171 return 0;
172}
173
174static const struct file_operations msm_kms_fops = {
175 .owner = THIS_MODULE,
176 .open = msm_kms_open,
177 .read = seq_read,
178 .llseek = seq_lseek,
179 .release = msm_kms_release,
180};
181
182/*
183 * Other debugfs:
184 */
185
186static unsigned long last_shrink_freed;
187
188static int
189shrink_get(void *data, u64 *val)
190{
191 *val = last_shrink_freed;
192
193 return 0;
194}
195
196static int
197shrink_set(void *data, u64 val)
198{
199 struct drm_device *dev = data;
200
201 last_shrink_freed = msm_gem_shrinker_shrink(dev, val);
202
203 return 0;
204}
205
206DEFINE_DEBUGFS_ATTRIBUTE(shrink_fops,
207 shrink_get, shrink_set,
208 "0x%08llx\n");
209
210
211static int msm_gem_show(struct seq_file *m, void *arg)
212{
213 struct drm_info_node *node = (struct drm_info_node *) m->private;
214 struct drm_device *dev = node->minor->dev;
215 struct msm_drm_private *priv = dev->dev_private;
216 int ret;
217
218 ret = mutex_lock_interruptible(&priv->obj_lock);
219 if (ret)
220 return ret;
221
222 msm_gem_describe_objects(&priv->objects, m);
223
224 mutex_unlock(&priv->obj_lock);
225
226 return 0;
227}
228
229static int msm_mm_show(struct seq_file *m, void *arg)
230{
231 struct drm_info_node *node = (struct drm_info_node *) m->private;
232 struct drm_device *dev = node->minor->dev;
233 struct drm_printer p = drm_seq_file_printer(m);
234
235 drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
236
237 return 0;
238}
239
240static int msm_fb_show(struct seq_file *m, void *arg)
241{
242 struct drm_info_node *node = (struct drm_info_node *) m->private;
243 struct drm_device *dev = node->minor->dev;
244 struct msm_drm_private *priv = dev->dev_private;
245 struct drm_framebuffer *fb, *fbdev_fb = NULL;
246
247 if (priv->fbdev) {
248 seq_printf(m, "fbcon ");
249 fbdev_fb = priv->fbdev->fb;
250 msm_framebuffer_describe(fbdev_fb, m);
251 }
252
253 mutex_lock(&dev->mode_config.fb_lock);
254 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
255 if (fb == fbdev_fb)
256 continue;
257
258 seq_printf(m, "user ");
259 msm_framebuffer_describe(fb, m);
260 }
261 mutex_unlock(&dev->mode_config.fb_lock);
262
263 return 0;
264}
265
266static struct drm_info_list msm_debugfs_list[] = {
267 {"gem", msm_gem_show},
268 { "mm", msm_mm_show },
269 { "fb", msm_fb_show },
270};
271
272static int late_init_minor(struct drm_minor *minor)
273{
274 int ret;
275
276 if (!minor)
277 return 0;
278
279 ret = msm_rd_debugfs_init(minor);
280 if (ret) {
281 DRM_DEV_ERROR(minor->dev->dev, "could not install rd debugfs\n");
282 return ret;
283 }
284
285 ret = msm_perf_debugfs_init(minor);
286 if (ret) {
287 DRM_DEV_ERROR(minor->dev->dev, "could not install perf debugfs\n");
288 return ret;
289 }
290
291 return 0;
292}
293
294int msm_debugfs_late_init(struct drm_device *dev)
295{
296 int ret;
297 ret = late_init_minor(dev->primary);
298 if (ret)
299 return ret;
300 ret = late_init_minor(dev->render);
301 return ret;
302}
303
304void msm_debugfs_init(struct drm_minor *minor)
305{
306 struct drm_device *dev = minor->dev;
307 struct msm_drm_private *priv = dev->dev_private;
308
309 drm_debugfs_create_files(msm_debugfs_list,
310 ARRAY_SIZE(msm_debugfs_list),
311 minor->debugfs_root, minor);
312
313 debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root,
314 dev, &msm_gpu_fops);
315
316 debugfs_create_file("kms", S_IRUSR, minor->debugfs_root,
317 dev, &msm_kms_fops);
318
319 debugfs_create_u32("hangcheck_period_ms", 0600, minor->debugfs_root,
320 &priv->hangcheck_period);
321
322 debugfs_create_bool("disable_err_irq", 0600, minor->debugfs_root,
323 &priv->disable_err_irq);
324
325 debugfs_create_file("shrink", S_IRWXU, minor->debugfs_root,
326 dev, &shrink_fops);
327
328 if (priv->kms && priv->kms->funcs->debugfs_init)
329 priv->kms->funcs->debugfs_init(priv->kms, minor);
330
331#ifdef CONFIG_FAULT_INJECTION
332 fault_create_debugfs_attr("fail_gem_alloc", minor->debugfs_root,
333 &fail_gem_alloc);
334 fault_create_debugfs_attr("fail_gem_iova", minor->debugfs_root,
335 &fail_gem_iova);
336#endif
337}
338#endif
339