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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
11#include <drm/drm_debugfs.h>
12#include <drm/drm_file.h>
13
14#include "msm_drv.h"
15#include "msm_gpu.h"
16#include "msm_kms.h"
17#include "msm_debugfs.h"
18
19struct msm_gpu_show_priv {
20 struct msm_gpu_state *state;
21 struct drm_device *dev;
22};
23
24static int msm_gpu_show(struct seq_file *m, void *arg)
25{
26 struct drm_printer p = drm_seq_file_printer(m);
27 struct msm_gpu_show_priv *show_priv = m->private;
28 struct msm_drm_private *priv = show_priv->dev->dev_private;
29 struct msm_gpu *gpu = priv->gpu;
30 int ret;
31
32 ret = mutex_lock_interruptible(&show_priv->dev->struct_mutex);
33 if (ret)
34 return ret;
35
36 drm_printf(&p, "%s Status:\n", gpu->name);
37 gpu->funcs->show(gpu, show_priv->state, &p);
38
39 mutex_unlock(&show_priv->dev->struct_mutex);
40
41 return 0;
42}
43
44static int msm_gpu_release(struct inode *inode, struct file *file)
45{
46 struct seq_file *m = file->private_data;
47 struct msm_gpu_show_priv *show_priv = m->private;
48 struct msm_drm_private *priv = show_priv->dev->dev_private;
49 struct msm_gpu *gpu = priv->gpu;
50
51 mutex_lock(&show_priv->dev->struct_mutex);
52 gpu->funcs->gpu_state_put(show_priv->state);
53 mutex_unlock(&show_priv->dev->struct_mutex);
54
55 kfree(show_priv);
56
57 return single_release(inode, file);
58}
59
60static int msm_gpu_open(struct inode *inode, struct file *file)
61{
62 struct drm_device *dev = inode->i_private;
63 struct msm_drm_private *priv = dev->dev_private;
64 struct msm_gpu *gpu = priv->gpu;
65 struct msm_gpu_show_priv *show_priv;
66 int ret;
67
68 if (!gpu || !gpu->funcs->gpu_state_get)
69 return -ENODEV;
70
71 show_priv = kmalloc(sizeof(*show_priv), GFP_KERNEL);
72 if (!show_priv)
73 return -ENOMEM;
74
75 ret = mutex_lock_interruptible(&dev->struct_mutex);
76 if (ret)
77 goto free_priv;
78
79 pm_runtime_get_sync(&gpu->pdev->dev);
80 show_priv->state = gpu->funcs->gpu_state_get(gpu);
81 pm_runtime_put_sync(&gpu->pdev->dev);
82
83 mutex_unlock(&dev->struct_mutex);
84
85 if (IS_ERR(show_priv->state)) {
86 ret = PTR_ERR(show_priv->state);
87 goto free_priv;
88 }
89
90 show_priv->dev = dev;
91
92 ret = single_open(file, msm_gpu_show, show_priv);
93 if (ret)
94 goto free_priv;
95
96 return 0;
97
98free_priv:
99 kfree(show_priv);
100 return ret;
101}
102
103static const struct file_operations msm_gpu_fops = {
104 .owner = THIS_MODULE,
105 .open = msm_gpu_open,
106 .read = seq_read,
107 .llseek = seq_lseek,
108 .release = msm_gpu_release,
109};
110
111static int msm_gem_show(struct drm_device *dev, struct seq_file *m)
112{
113 struct msm_drm_private *priv = dev->dev_private;
114 struct msm_gpu *gpu = priv->gpu;
115
116 if (gpu) {
117 seq_printf(m, "Active Objects (%s):\n", gpu->name);
118 msm_gem_describe_objects(&gpu->active_list, m);
119 }
120
121 seq_printf(m, "Inactive Objects:\n");
122 msm_gem_describe_objects(&priv->inactive_list, m);
123
124 return 0;
125}
126
127static int msm_mm_show(struct drm_device *dev, struct seq_file *m)
128{
129 struct drm_printer p = drm_seq_file_printer(m);
130
131 drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
132
133 return 0;
134}
135
136static int msm_fb_show(struct drm_device *dev, struct seq_file *m)
137{
138 struct msm_drm_private *priv = dev->dev_private;
139 struct drm_framebuffer *fb, *fbdev_fb = NULL;
140
141 if (priv->fbdev) {
142 seq_printf(m, "fbcon ");
143 fbdev_fb = priv->fbdev->fb;
144 msm_framebuffer_describe(fbdev_fb, m);
145 }
146
147 mutex_lock(&dev->mode_config.fb_lock);
148 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
149 if (fb == fbdev_fb)
150 continue;
151
152 seq_printf(m, "user ");
153 msm_framebuffer_describe(fb, m);
154 }
155 mutex_unlock(&dev->mode_config.fb_lock);
156
157 return 0;
158}
159
160static int show_locked(struct seq_file *m, void *arg)
161{
162 struct drm_info_node *node = (struct drm_info_node *) m->private;
163 struct drm_device *dev = node->minor->dev;
164 int (*show)(struct drm_device *dev, struct seq_file *m) =
165 node->info_ent->data;
166 int ret;
167
168 ret = mutex_lock_interruptible(&dev->struct_mutex);
169 if (ret)
170 return ret;
171
172 ret = show(dev, m);
173
174 mutex_unlock(&dev->struct_mutex);
175
176 return ret;
177}
178
179static struct drm_info_list msm_debugfs_list[] = {
180 {"gem", show_locked, 0, msm_gem_show},
181 { "mm", show_locked, 0, msm_mm_show },
182 { "fb", show_locked, 0, msm_fb_show },
183};
184
185static int late_init_minor(struct drm_minor *minor)
186{
187 int ret;
188
189 if (!minor)
190 return 0;
191
192 ret = msm_rd_debugfs_init(minor);
193 if (ret) {
194 DRM_DEV_ERROR(minor->dev->dev, "could not install rd debugfs\n");
195 return ret;
196 }
197
198 ret = msm_perf_debugfs_init(minor);
199 if (ret) {
200 DRM_DEV_ERROR(minor->dev->dev, "could not install perf debugfs\n");
201 return ret;
202 }
203
204 return 0;
205}
206
207int msm_debugfs_late_init(struct drm_device *dev)
208{
209 int ret;
210 ret = late_init_minor(dev->primary);
211 if (ret)
212 return ret;
213 ret = late_init_minor(dev->render);
214 return ret;
215}
216
217void msm_debugfs_init(struct drm_minor *minor)
218{
219 struct drm_device *dev = minor->dev;
220 struct msm_drm_private *priv = dev->dev_private;
221
222 drm_debugfs_create_files(msm_debugfs_list,
223 ARRAY_SIZE(msm_debugfs_list),
224 minor->debugfs_root, minor);
225
226 debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root,
227 dev, &msm_gpu_fops);
228
229 if (priv->kms && priv->kms->funcs->debugfs_init)
230 priv->kms->funcs->debugfs_init(priv->kms, minor);
231}
232#endif
233
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