summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/msm/msm_debugfs.c
blob: 04d304eed22371be8686461d1a27a2bc7ccbc1f9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2013-2016 Red Hat
 * Author: Rob Clark <robdclark@gmail.com>
 */

#ifdef CONFIG_DEBUG_FS

#include <linux/debugfs.h>
#include <linux/fault-inject.h>

#include <drm/drm_debugfs.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_file.h>
#include <drm/drm_framebuffer.h>

#include "msm_drv.h"
#include "msm_gpu.h"
#include "msm_kms.h"
#include "msm_debugfs.h"
#include "disp/msm_disp_snapshot.h"

/*
 * GPU Snapshot:
 */

struct msm_gpu_show_priv {
	struct msm_gpu_state *state;
	struct drm_device *dev;
};

static int msm_gpu_show(struct seq_file *m, void *arg)
{
	struct drm_printer p = drm_seq_file_printer(m);
	struct msm_gpu_show_priv *show_priv = m->private;
	struct msm_drm_private *priv = show_priv->dev->dev_private;
	struct msm_gpu *gpu = priv->gpu;
	int ret;

	ret = mutex_lock_interruptible(&gpu->lock);
	if (ret)
		return ret;

	drm_printf(&p, "%s Status:\n", gpu->name);
	gpu->funcs->show(gpu, show_priv->state, &p);

	mutex_unlock(&gpu->lock);

	return 0;
}

static int msm_gpu_release(struct inode *inode, struct file *file)
{
	struct seq_file *m = file->private_data;
	struct msm_gpu_show_priv *show_priv = m->private;
	struct msm_drm_private *priv = show_priv->dev->dev_private;
	struct msm_gpu *gpu = priv->gpu;

	mutex_lock(&gpu->lock);
	gpu->funcs->gpu_state_put(show_priv->state);
	mutex_unlock(&gpu->lock);

	kfree(show_priv);

	return single_release(inode, file);
}

static int msm_gpu_open(struct inode *inode, struct file *file)
{
	struct drm_device *dev = inode->i_private;
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_gpu *gpu = priv->gpu;
	struct msm_gpu_show_priv *show_priv;
	int ret;

	if (!gpu || !gpu->funcs->gpu_state_get)
		return -ENODEV;

	show_priv = kmalloc(sizeof(*show_priv), GFP_KERNEL);
	if (!show_priv)
		return -ENOMEM;

	ret = mutex_lock_interruptible(&gpu->lock);
	if (ret)
		goto free_priv;

	pm_runtime_get_sync(&gpu->pdev->dev);
	msm_gpu_hw_init(gpu);
	show_priv->state = gpu->funcs->gpu_state_get(gpu);
	pm_runtime_put_sync(&gpu->pdev->dev);

	mutex_unlock(&gpu->lock);

	if (IS_ERR(show_priv->state)) {
		ret = PTR_ERR(show_priv->state);
		goto free_priv;
	}

	show_priv->dev = dev;

	ret = single_open(file, msm_gpu_show, show_priv);
	if (ret)
		goto free_priv;

	return 0;

free_priv:
	kfree(show_priv);
	return ret;
}

static const struct file_operations msm_gpu_fops = {
	.owner = THIS_MODULE,
	.open = msm_gpu_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = msm_gpu_release,
};

/*
 * Display Snapshot:
 */

static int msm_kms_show(struct seq_file *m, void *arg)
{
	struct drm_printer p = drm_seq_file_printer(m);
	struct msm_disp_state *state = m->private;

	msm_disp_state_print(state, &p);

	return 0;
}

static int msm_kms_release(struct inode *inode, struct file *file)
{
	struct seq_file *m = file->private_data;
	struct msm_disp_state *state = m->private;

	msm_disp_state_free(state);

	return single_release(inode, file);
}

static int msm_kms_open(struct inode *inode, struct file *file)
{
	struct drm_device *dev = inode->i_private;
	struct msm_drm_private *priv = dev->dev_private;
	struct msm_disp_state *state;
	int ret;

	if (!priv->kms)
		return -ENODEV;

	ret = mutex_lock_interruptible(&priv->kms->dump_mutex);
	if (ret)
		return ret;

	state = msm_disp_snapshot_state_sync(priv->kms);

	mutex_unlock(&priv->kms->dump_mutex);

	if (IS_ERR(state)) {
		return PTR_ERR(state);
	}

	ret = single_open(file, msm_kms_show, state);
	if (ret) {
		msm_disp_state_free(state);
		return ret;
	}

	return 0;
}

static const struct file_operations msm_kms_fops = {
	.owner = THIS_MODULE,
	.open = msm_kms_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = msm_kms_release,
};

/*
 * Other debugfs:
 */

static unsigned long last_shrink_freed;

static int
shrink_get(void *data, u64 *val)
{
	*val = last_shrink_freed;

	return 0;
}

static int
shrink_set(void *data, u64 val)
{
	struct drm_device *dev = data;

	last_shrink_freed = msm_gem_shrinker_shrink(dev, val);

	return 0;
}

DEFINE_DEBUGFS_ATTRIBUTE(shrink_fops,
			 shrink_get, shrink_set,
			 "0x%08llx\n");


static int msm_gem_show(struct seq_file *m, void *arg)
{
	struct drm_info_node *node = m->private;
	struct drm_device *dev = node->minor->dev;
	struct msm_drm_private *priv = dev->dev_private;
	int ret;

	ret = mutex_lock_interruptible(&priv->obj_lock);
	if (ret)
		return ret;

	msm_gem_describe_objects(&priv->objects, m);

	mutex_unlock(&priv->obj_lock);

	return 0;
}

static int msm_mm_show(struct seq_file *m, void *arg)
{
	struct drm_info_node *node = m->private;
	struct drm_device *dev = node->minor->dev;
	struct drm_printer p = drm_seq_file_printer(m);

	drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);

	return 0;
}

static int msm_fb_show(struct seq_file *m, void *arg)
{
	struct drm_info_node *node = m->private;
	struct drm_device *dev = node->minor->dev;
	struct drm_framebuffer *fb, *fbdev_fb = NULL;

	if (dev->fb_helper && dev->fb_helper->fb) {
		seq_printf(m, "fbcon ");
		fbdev_fb = dev->fb_helper->fb;
		msm_framebuffer_describe(fbdev_fb, m);
	}

	mutex_lock(&dev->mode_config.fb_lock);
	list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
		if (fb == fbdev_fb)
			continue;

		seq_printf(m, "user ");
		msm_framebuffer_describe(fb, m);
	}
	mutex_unlock(&dev->mode_config.fb_lock);

	return 0;
}

static struct drm_info_list msm_debugfs_list[] = {
		{"gem", msm_gem_show},
		{ "mm", msm_mm_show },
};

static struct drm_info_list msm_kms_debugfs_list[] = {
		{ "fb", msm_fb_show },
};

static int late_init_minor(struct drm_minor *minor)
{
	int ret;

	if (!minor)
		return 0;

	ret = msm_rd_debugfs_init(minor);
	if (ret) {
		DRM_DEV_ERROR(minor->dev->dev, "could not install rd debugfs\n");
		return ret;
	}

	ret = msm_perf_debugfs_init(minor);
	if (ret) {
		DRM_DEV_ERROR(minor->dev->dev, "could not install perf debugfs\n");
		return ret;
	}

	return 0;
}

int msm_debugfs_late_init(struct drm_device *dev)
{
	int ret;
	ret = late_init_minor(dev->primary);
	if (ret)
		return ret;
	ret = late_init_minor(dev->render);
	return ret;
}

void msm_debugfs_init(struct drm_minor *minor)
{
	struct drm_device *dev = minor->dev;
	struct msm_drm_private *priv = dev->dev_private;
	struct dentry *gpu_devfreq;

	drm_debugfs_create_files(msm_debugfs_list,
				 ARRAY_SIZE(msm_debugfs_list),
				 minor->debugfs_root, minor);

	debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root,
		dev, &msm_gpu_fops);

	if (priv->kms) {
		drm_debugfs_create_files(msm_kms_debugfs_list,
					 ARRAY_SIZE(msm_kms_debugfs_list),
					 minor->debugfs_root, minor);
		debugfs_create_file("kms", S_IRUSR, minor->debugfs_root,
				    dev, &msm_kms_fops);
	}

	debugfs_create_u32("hangcheck_period_ms", 0600, minor->debugfs_root,
		&priv->hangcheck_period);

	debugfs_create_bool("disable_err_irq", 0600, minor->debugfs_root,
		&priv->disable_err_irq);

	debugfs_create_file("shrink", S_IRWXU, minor->debugfs_root,
		dev, &shrink_fops);

	gpu_devfreq = debugfs_create_dir("devfreq", minor->debugfs_root);

	debugfs_create_bool("idle_clamp",0600, gpu_devfreq,
			    &priv->gpu_clamp_to_idle);

	debugfs_create_u32("upthreshold",0600, gpu_devfreq,
			   &priv->gpu_devfreq_config.upthreshold);

	debugfs_create_u32("downdifferential",0600, gpu_devfreq,
			   &priv->gpu_devfreq_config.downdifferential);

	if (priv->kms && priv->kms->funcs->debugfs_init)
		priv->kms->funcs->debugfs_init(priv->kms, minor);

#ifdef CONFIG_FAULT_INJECTION
	fault_create_debugfs_attr("fail_gem_alloc", minor->debugfs_root,
				  &fail_gem_alloc);
	fault_create_debugfs_attr("fail_gem_iova", minor->debugfs_root,
				  &fail_gem_iova);
#endif
}
#endif