[linux-2.6-block.git] / drivers / gpu / drm / drm_debugfs.c

/*
 * Created: Sun Dec 21 13:08:50 2008 by bgamari@gmail.com
 *
 * Copyright 2008 Ben Gamari <bgamari@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/export.h>

#include <drm/drm_client.h>
#include <drm/drm_debugfs.h>
#include <drm/drm_edid.h>
#include <drm/drm_atomic.h>
#include <drm/drm_auth.h>
#include <drm/drm_gem.h>
#include <drm/drmP.h>

#include "drm_internal.h"
#include "drm_crtc_internal.h"

#if defined(CONFIG_DEBUG_FS)

/***************************************************
 * Initialization, etc.
 **************************************************/

static int drm_name_info(struct seq_file *m, void *data)
{
	struct drm_info_node *node = (struct drm_info_node *) m->private;
	struct drm_minor *minor = node->minor;
	struct drm_device *dev = minor->dev;
	struct drm_master *master;

	mutex_lock(&dev->master_mutex);
	master = dev->master;
	seq_printf(m, "%s", dev->driver->name);
	if (dev->dev)
		seq_printf(m, " dev=%s", dev_name(dev->dev));
	if (master && master->unique)
		seq_printf(m, " master=%s", master->unique);
	if (dev->unique)
		seq_printf(m, " unique=%s", dev->unique);
	seq_printf(m, "\n");
	mutex_unlock(&dev->master_mutex);

	return 0;
}

static int drm_clients_info(struct seq_file *m, void *data)
{
	struct drm_info_node *node = (struct drm_info_node *) m->private;
	struct drm_device *dev = node->minor->dev;
	struct drm_file *priv;
	kuid_t uid;

	seq_printf(m,
		   "%20s %5s %3s master a %5s %10s\n",
		   "command",
		   "pid",
		   "dev",
		   "uid",
		   "magic");

	/* dev->filelist is sorted youngest first, but we want to present
	 * oldest first (i.e. kernel, servers, clients), so walk backwardss.
	 */
	mutex_lock(&dev->filelist_mutex);
	list_for_each_entry_reverse(priv, &dev->filelist, lhead) {
		struct task_struct *task;

		rcu_read_lock(); /* locks pid_task()->comm */
		task = pid_task(priv->pid, PIDTYPE_PID);
		uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID;
		seq_printf(m, "%20s %5d %3d   %c    %c %5d %10u\n",
			   task ? task->comm : "<unknown>",
			   pid_vnr(priv->pid),
			   priv->minor->index,
			   drm_is_current_master(priv) ? 'y' : 'n',
			   priv->authenticated ? 'y' : 'n',
			   from_kuid_munged(seq_user_ns(m), uid),
			   priv->magic);
		rcu_read_unlock();
	}
	mutex_unlock(&dev->filelist_mutex);
	return 0;
}

static int drm_gem_one_name_info(int id, void *ptr, void *data)
{
	struct drm_gem_object *obj = ptr;
	struct seq_file *m = data;

	seq_printf(m, "%6d %8zd %7d %8d\n",
		   obj->name, obj->size,
		   obj->handle_count,
		   kref_read(&obj->refcount));
	return 0;
}

static int drm_gem_name_info(struct seq_file *m, void *data)
{
	struct drm_info_node *node = (struct drm_info_node *) m->private;
	struct drm_device *dev = node->minor->dev;

	seq_printf(m, "  name     size handles refcount\n");

	mutex_lock(&dev->object_name_lock);
	idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
	mutex_unlock(&dev->object_name_lock);

	return 0;
}

static const struct drm_info_list drm_debugfs_list[] = {
	{"name", drm_name_info, 0},
	{"clients", drm_clients_info, 0},
	{"gem_names", drm_gem_name_info, DRIVER_GEM},
};
#define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list)


static int drm_debugfs_open(struct inode *inode, struct file *file)
{
	struct drm_info_node *node = inode->i_private;

	return single_open(file, node->info_ent->show, node);
}


static const struct file_operations drm_debugfs_fops = {
	.owner = THIS_MODULE,
	.open = drm_debugfs_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
};


/**
 * drm_debugfs_create_files - Initialize a given set of debugfs files for DRM
 * 			minor
 * @files: The array of files to create
 * @count: The number of files given
 * @root: DRI debugfs dir entry.
 * @minor: device minor number
 *
 * Create a given set of debugfs files represented by an array of
 * &struct drm_info_list in the given root directory. These files will be removed
 * automatically on drm_debugfs_cleanup().
 */
int drm_debugfs_create_files(const struct drm_info_list *files, int count,
			     struct dentry *root, struct drm_minor *minor)
{
	struct drm_device *dev = minor->dev;
	struct dentry *ent;
	struct drm_info_node *tmp;
	int i, ret;

	for (i = 0; i < count; i++) {
		u32 features = files[i].driver_features;

		if (features != 0 &&
		    (dev->driver->driver_features & features) != features)
			continue;

		tmp = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
		if (tmp == NULL) {
			ret = -1;
			goto fail;
		}
		ent = debugfs_create_file(files[i].name, S_IFREG | S_IRUGO,
					  root, tmp, &drm_debugfs_fops);
		if (!ent) {
			DRM_ERROR("Cannot create /sys/kernel/debug/dri/%pd/%s\n",
				  root, files[i].name);
			kfree(tmp);
			ret = -1;
			goto fail;
		}

		tmp->minor = minor;
		tmp->dent = ent;
		tmp->info_ent = &files[i];

		mutex_lock(&minor->debugfs_lock);
		list_add(&tmp->list, &minor->debugfs_list);
		mutex_unlock(&minor->debugfs_lock);
	}
	return 0;

fail:
	drm_debugfs_remove_files(files, count, minor);
	return ret;
}
EXPORT_SYMBOL(drm_debugfs_create_files);

int drm_debugfs_init(struct drm_minor *minor, int minor_id,
		     struct dentry *root)
{
	struct drm_device *dev = minor->dev;
	char name[64];
	int ret;

	INIT_LIST_HEAD(&minor->debugfs_list);
	mutex_init(&minor->debugfs_lock);
	sprintf(name, "%d", minor_id);
	minor->debugfs_root = debugfs_create_dir(name, root);
	if (!minor->debugfs_root) {
		DRM_ERROR("Cannot create /sys/kernel/debug/dri/%s\n", name);
		return -1;
	}

	ret = drm_debugfs_create_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES,
				       minor->debugfs_root, minor);
	if (ret) {
		debugfs_remove(minor->debugfs_root);
		minor->debugfs_root = NULL;
		DRM_ERROR("Failed to create core drm debugfs files\n");
		return ret;
	}

	if (drm_drv_uses_atomic_modeset(dev)) {
		ret = drm_atomic_debugfs_init(minor);
		if (ret) {
			DRM_ERROR("Failed to create atomic debugfs files\n");
			return ret;
		}
	}

	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
		ret = drm_framebuffer_debugfs_init(minor);
		if (ret) {
			DRM_ERROR("Failed to create framebuffer debugfs file\n");
			return ret;
		}

		ret = drm_client_debugfs_init(minor);
		if (ret) {
			DRM_ERROR("Failed to create client debugfs file\n");
			return ret;
		}
	}

	if (dev->driver->debugfs_init) {
		ret = dev->driver->debugfs_init(minor);
		if (ret) {
			DRM_ERROR("DRM: Driver failed to initialize "
				  "/sys/kernel/debug/dri.\n");
			return ret;
		}
	}
	return 0;
}


int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
			     struct drm_minor *minor)
{
	struct list_head *pos, *q;
	struct drm_info_node *tmp;
	int i;

	mutex_lock(&minor->debugfs_lock);
	for (i = 0; i < count; i++) {
		list_for_each_safe(pos, q, &minor->debugfs_list) {
			tmp = list_entry(pos, struct drm_info_node, list);
			if (tmp->info_ent == &files[i]) {
				debugfs_remove(tmp->dent);
				list_del(pos);
				kfree(tmp);
			}
		}
	}
	mutex_unlock(&minor->debugfs_lock);
	return 0;
}
EXPORT_SYMBOL(drm_debugfs_remove_files);

static void drm_debugfs_remove_all_files(struct drm_minor *minor)
{
	struct drm_info_node *node, *tmp;

	mutex_lock(&minor->debugfs_lock);
	list_for_each_entry_safe(node, tmp, &minor->debugfs_list, list) {
		debugfs_remove(node->dent);
		list_del(&node->list);
		kfree(node);
	}
	mutex_unlock(&minor->debugfs_lock);
}

int drm_debugfs_cleanup(struct drm_minor *minor)
{
	if (!minor->debugfs_root)
		return 0;

	drm_debugfs_remove_all_files(minor);

	debugfs_remove_recursive(minor->debugfs_root);
	minor->debugfs_root = NULL;

	return 0;
}

static int connector_show(struct seq_file *m, void *data)
{
	struct drm_connector *connector = m->private;

	seq_printf(m, "%s\n", drm_get_connector_force_name(connector->force));

	return 0;
}

static int connector_open(struct inode *inode, struct file *file)
{
	struct drm_connector *dev = inode->i_private;

	return single_open(file, connector_show, dev);
}

static ssize_t connector_write(struct file *file, const char __user *ubuf,
			       size_t len, loff_t *offp)
{
	struct seq_file *m = file->private_data;
	struct drm_connector *connector = m->private;
	char buf[12];

	if (len > sizeof(buf) - 1)
		return -EINVAL;

	if (copy_from_user(buf, ubuf, len))
		return -EFAULT;

	buf[len] = '\0';

	if (!strcmp(buf, "on"))
		connector->force = DRM_FORCE_ON;
	else if (!strcmp(buf, "digital"))
		connector->force = DRM_FORCE_ON_DIGITAL;
	else if (!strcmp(buf, "off"))
		connector->force = DRM_FORCE_OFF;
	else if (!strcmp(buf, "unspecified"))
		connector->force = DRM_FORCE_UNSPECIFIED;
	else
		return -EINVAL;

	return len;
}

static int edid_show(struct seq_file *m, void *data)
{
	struct drm_connector *connector = m->private;
	struct drm_property_blob *edid = connector->edid_blob_ptr;

	if (connector->override_edid && edid)
		seq_write(m, edid->data, edid->length);

	return 0;
}

static int edid_open(struct inode *inode, struct file *file)
{
	struct drm_connector *dev = inode->i_private;

	return single_open(file, edid_show, dev);
}

static ssize_t edid_write(struct file *file, const char __user *ubuf,
			  size_t len, loff_t *offp)
{
	struct seq_file *m = file->private_data;
	struct drm_connector *connector = m->private;
	char *buf;
	struct edid *edid;
	int ret;

	buf = memdup_user(ubuf, len);
	if (IS_ERR(buf))
		return PTR_ERR(buf);

	edid = (struct edid *) buf;

	if (len == 5 && !strncmp(buf, "reset", 5)) {
		connector->override_edid = false;
		ret = drm_connector_update_edid_property(connector, NULL);
	} else if (len < EDID_LENGTH ||
		   EDID_LENGTH * (1 + edid->extensions) > len)
		ret = -EINVAL;
	else {
		connector->override_edid = false;
		ret = drm_connector_update_edid_property(connector, edid);
		if (!ret)
			connector->override_edid = true;
	}

	kfree(buf);

	return (ret) ? ret : len;
}

static const struct file_operations drm_edid_fops = {
	.owner = THIS_MODULE,
	.open = edid_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
	.write = edid_write
};


static const struct file_operations drm_connector_fops = {
	.owner = THIS_MODULE,
	.open = connector_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
	.write = connector_write
};

int drm_debugfs_connector_add(struct drm_connector *connector)
{
	struct drm_minor *minor = connector->dev->primary;
	struct dentry *root, *ent;

	if (!minor->debugfs_root)
		return -1;

	root = debugfs_create_dir(connector->name, minor->debugfs_root);
	if (!root)
		return -ENOMEM;

	connector->debugfs_entry = root;

	/* force */
	ent = debugfs_create_file("force", S_IRUGO | S_IWUSR, root, connector,
				  &drm_connector_fops);
	if (!ent)
		goto error;

	/* edid */
	ent = debugfs_create_file("edid_override", S_IRUGO | S_IWUSR, root,
				  connector, &drm_edid_fops);
	if (!ent)
		goto error;

	return 0;

error:
	debugfs_remove_recursive(connector->debugfs_entry);
	connector->debugfs_entry = NULL;
	return -ENOMEM;
}

void drm_debugfs_connector_remove(struct drm_connector *connector)
{
	if (!connector->debugfs_entry)
		return;

	debugfs_remove_recursive(connector->debugfs_entry);

	connector->debugfs_entry = NULL;
}

int drm_debugfs_crtc_add(struct drm_crtc *crtc)
{
	struct drm_minor *minor = crtc->dev->primary;
	struct dentry *root;
	char *name;

	name = kasprintf(GFP_KERNEL, "crtc-%d", crtc->index);
	if (!name)
		return -ENOMEM;

	root = debugfs_create_dir(name, minor->debugfs_root);
	kfree(name);
	if (!root)
		return -ENOMEM;

	crtc->debugfs_entry = root;

	if (drm_debugfs_crtc_crc_add(crtc))
		goto error;

	return 0;

error:
	drm_debugfs_crtc_remove(crtc);
	return -ENOMEM;
}

void drm_debugfs_crtc_remove(struct drm_crtc *crtc)
{
	debugfs_remove_recursive(crtc->debugfs_entry);
	crtc->debugfs_entry = NULL;
}

#endif /* CONFIG_DEBUG_FS */
Commit	Line	Data
28a62277 BG	1	/*
	2	* Created: Sun Dec 21 13:08:50 2008 by bgamari@gmail.com
	3	*
	4	* Copyright 2008 Ben Gamari <bgamari@gmail.com>
	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 (including the next
	14	* paragraph) shall be included in all copies or substantial portions of the
	15	* Software.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	18	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	19	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	20	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	21	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	22	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	23	* OTHER DEALINGS IN THE SOFTWARE.
	24	*/
	25
	26	#include <linux/debugfs.h>
	27	#include <linux/seq_file.h>
5a0e3ad6	28	#include <linux/slab.h>
2d1a8a48	29	#include <linux/export.h>
4834442d	30
e896c132	31	#include <drm/drm_client.h>
4834442d	32	#include <drm/drm_debugfs.h>
4cf2b281	33	#include <drm/drm_edid.h>
6559c901	34	#include <drm/drm_atomic.h>
c6fdea6e DV	35	#include <drm/drm_auth.h>
c6fdea6e DV	36	#include <drm/drm_gem.h>
4834442d DV	37	#include <drm/drmP.h>
4834442d DV	38
67d0ec4e	39	#include "drm_internal.h"
5bc9cb4d	40	#include "drm_crtc_internal.h"
28a62277 BG	41
	42	#if defined(CONFIG_DEBUG_FS)
	43
	44	/***************************************************
	45	* Initialization, etc.
	46	**************************************************/
	47
c6fdea6e DV	48	static int drm_name_info(struct seq_file m, void data)
	49	{
	50	struct drm_info_node node = (struct drm_info_node ) m->private;
	51	struct drm_minor *minor = node->minor;
	52	struct drm_device *dev = minor->dev;
	53	struct drm_master *master;
	54
	55	mutex_lock(&dev->master_mutex);
	56	master = dev->master;
	57	seq_printf(m, "%s", dev->driver->name);
	58	if (dev->dev)
	59	seq_printf(m, " dev=%s", dev_name(dev->dev));
	60	if (master && master->unique)
	61	seq_printf(m, " master=%s", master->unique);
	62	if (dev->unique)
	63	seq_printf(m, " unique=%s", dev->unique);
	64	seq_printf(m, "\n");
	65	mutex_unlock(&dev->master_mutex);
	66
	67	return 0;
	68	}
	69
	70	static int drm_clients_info(struct seq_file m, void data)
	71	{
	72	struct drm_info_node node = (struct drm_info_node ) m->private;
	73	struct drm_device *dev = node->minor->dev;
	74	struct drm_file *priv;
	75	kuid_t uid;
	76
	77	seq_printf(m,
	78	"%20s %5s %3s master a %5s %10s\n",
	79	"command",
	80	"pid",
	81	"dev",
	82	"uid",
	83	"magic");
	84
	85	/* dev->filelist is sorted youngest first, but we want to present
	86	* oldest first (i.e. kernel, servers, clients), so walk backwardss.
	87	*/
	88	mutex_lock(&dev->filelist_mutex);
	89	list_for_each_entry_reverse(priv, &dev->filelist, lhead) {
	90	struct task_struct *task;
	91
	92	rcu_read_lock(); /* locks pid_task()->comm */
	93	task = pid_task(priv->pid, PIDTYPE_PID);
	94	uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID;
	95	seq_printf(m, "%20s %5d %3d %c %c %5d %10u\n",
	96	task ? task->comm : "<unknown>",
	97	pid_vnr(priv->pid),
	98	priv->minor->index,
	99	drm_is_current_master(priv) ? 'y' : 'n',
	100	priv->authenticated ? 'y' : 'n',
	101	from_kuid_munged(seq_user_ns(m), uid),
	102	priv->magic);
	103	rcu_read_unlock();
	104	}
	105	mutex_unlock(&dev->filelist_mutex);
	106	return 0;
	107	}
	108
	109	static int drm_gem_one_name_info(int id, void ptr, void data)
	110	{
	111	struct drm_gem_object *obj = ptr;
112	struct seq_file *m = data;
113
114	seq_printf(m, "%6d %8zd %7d %8d\n",
115	obj->name, obj->size,
116	obj->handle_count,
117	kref_read(&obj->refcount));
118	return 0;
119	}
120
121	static int drm_gem_name_info(struct seq_file m, void data)
122	{
123	struct drm_info_node node = (struct drm_info_node ) m->private;
124	struct drm_device *dev = node->minor->dev;
125
126	seq_printf(m, " name size handles refcount\n");
127
128	mutex_lock(&dev->object_name_lock);
129	idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
130	mutex_unlock(&dev->object_name_lock);
131
132	return 0;
133	}
134
36f73b2f	135	static const struct drm_info_list drm_debugfs_list[] = {
28a62277	136	{"name", drm_name_info, 0},
28a62277	137	{"clients", drm_clients_info, 0},
28a62277	138	{"gem_names", drm_gem_name_info, DRIVER_GEM},
28a62277 BG	139	};
	140	#define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list)
	141
	142
	143	static int drm_debugfs_open(struct inode inode, struct file file)
	144	{
	145	struct drm_info_node *node = inode->i_private;
	146
	147	return single_open(file, node->info_ent->show, node);
	148	}
	149
	150
	151	static const struct file_operations drm_debugfs_fops = {
	152	.owner = THIS_MODULE,
	153	.open = drm_debugfs_open,
	154	.read = seq_read,
	155	.llseek = seq_lseek,
	156	.release = single_release,
	157	};
	158
	159
	160	/**
0cad7f71 DV	161	* drm_debugfs_create_files - Initialize a given set of debugfs files for DRM
	162	* minor
	163	* @files: The array of files to create
	164	* @count: The number of files given
	165	* @root: DRI debugfs dir entry.
	166	* @minor: device minor number
28a62277 BG	167	*
28a62277 BG	168	* Create a given set of debugfs files represented by an array of
0cad7f71	169	* &struct drm_info_list in the given root directory. These files will be removed
086f2e5c	170	* automatically on drm_debugfs_cleanup().
28a62277	171	*/
7d74795b	172	int drm_debugfs_create_files(const struct drm_info_list *files, int count,
28a62277 BG	173	struct dentry root, struct drm_minor minor)
	174	{
	175	struct drm_device *dev = minor->dev;
	176	struct dentry *ent;
	177	struct drm_info_node *tmp;
28a62277 BG	178	int i, ret;
	179
	180	for (i = 0; i < count; i++) {
	181	u32 features = files[i].driver_features;
	182
	183	if (features != 0 &&
	184	(dev->driver->driver_features & features) != features)
	185	continue;
	186
9a298b2a	187	tmp = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
d25e3a6f JS	188	if (tmp == NULL) {
	189	ret = -1;
	190	goto fail;
	191	}
28a62277 BG	192	ent = debugfs_create_file(files[i].name, S_IFREG \| S_IRUGO,
	193	root, tmp, &drm_debugfs_fops);
	194	if (!ent) {
bcd599e7 AV	195	DRM_ERROR("Cannot create /sys/kernel/debug/dri/%pd/%s\n",
bcd599e7 AV	196	root, files[i].name);
9a298b2a	197	kfree(tmp);
28a62277 BG	198	ret = -1;
	199	goto fail;
	200	}
	201
	202	tmp->minor = minor;
	203	tmp->dent = ent;
	204	tmp->info_ent = &files[i];
b3e067c0 MS	205
	206	mutex_lock(&minor->debugfs_lock);
	207	list_add(&tmp->list, &minor->debugfs_list);
	208	mutex_unlock(&minor->debugfs_lock);
28a62277 BG	209	}
	210	return 0;
	211
	212	fail:
	213	drm_debugfs_remove_files(files, count, minor);
	214	return ret;
	215	}
	216	EXPORT_SYMBOL(drm_debugfs_create_files);
	217
28a62277 BG	218	int drm_debugfs_init(struct drm_minor *minor, int minor_id,
	219	struct dentry *root)
	220	{
	221	struct drm_device *dev = minor->dev;
	222	char name[64];
	223	int ret;
	224
b3e067c0 MS	225	INIT_LIST_HEAD(&minor->debugfs_list);
b3e067c0 MS	226	mutex_init(&minor->debugfs_lock);
28a62277 BG	227	sprintf(name, "%d", minor_id);
	228	minor->debugfs_root = debugfs_create_dir(name, root);
	229	if (!minor->debugfs_root) {
156f5a78	230	DRM_ERROR("Cannot create /sys/kernel/debug/dri/%s\n", name);
28a62277 BG	231	return -1;
	232	}
	233
	234	ret = drm_debugfs_create_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES,
	235	minor->debugfs_root, minor);
	236	if (ret) {
	237	debugfs_remove(minor->debugfs_root);
	238	minor->debugfs_root = NULL;
	239	DRM_ERROR("Failed to create core drm debugfs files\n");
	240	return ret;
	241	}
	242
3c499ea0	243	if (drm_drv_uses_atomic_modeset(dev)) {
6559c901 RC	244	ret = drm_atomic_debugfs_init(minor);
	245	if (ret) {
	246	DRM_ERROR("Failed to create atomic debugfs files\n");
	247	return ret;
	248	}
	249	}
	250
0c51ef86 NT	251	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	252	ret = drm_framebuffer_debugfs_init(minor);
	253	if (ret) {
	254	DRM_ERROR("Failed to create framebuffer debugfs file\n");
	255	return ret;
	256	}
e896c132 NT	257
	258	ret = drm_client_debugfs_init(minor);
	259	if (ret) {
	260	DRM_ERROR("Failed to create client debugfs file\n");
	261	return ret;
	262	}
45d58b40 NT	263	}
45d58b40 NT	264
28a62277 BG	265	if (dev->driver->debugfs_init) {
	266	ret = dev->driver->debugfs_init(minor);
	267	if (ret) {
	268	DRM_ERROR("DRM: Driver failed to initialize "
156f5a78	269	"/sys/kernel/debug/dri.\n");
28a62277 BG	270	return ret;
	271	}
	272	}
	273	return 0;
	274	}
	275
	276
7d74795b	277	int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
28a62277 BG	278	struct drm_minor *minor)
	279	{
	280	struct list_head pos, q;
	281	struct drm_info_node *tmp;
	282	int i;
	283
b3e067c0	284	mutex_lock(&minor->debugfs_lock);
28a62277	285	for (i = 0; i < count; i++) {
b3e067c0	286	list_for_each_safe(pos, q, &minor->debugfs_list) {
28a62277 BG	287	tmp = list_entry(pos, struct drm_info_node, list);
	288	if (tmp->info_ent == &files[i]) {
	289	debugfs_remove(tmp->dent);
	290	list_del(pos);
9a298b2a	291	kfree(tmp);
28a62277 BG	292	}
	293	}
	294	}
b3e067c0	295	mutex_unlock(&minor->debugfs_lock);
28a62277 BG	296	return 0;
	297	}
	298	EXPORT_SYMBOL(drm_debugfs_remove_files);
	299
086f2e5c NT	300	static void drm_debugfs_remove_all_files(struct drm_minor *minor)
	301	{
	302	struct drm_info_node node, tmp;
	303
	304	mutex_lock(&minor->debugfs_lock);
	305	list_for_each_entry_safe(node, tmp, &minor->debugfs_list, list) {
	306	debugfs_remove(node->dent);
	307	list_del(&node->list);
	308	kfree(node);
	309	}
	310	mutex_unlock(&minor->debugfs_lock);
	311	}
	312
28a62277 BG	313	int drm_debugfs_cleanup(struct drm_minor *minor)
28a62277 BG	314	{
28a62277 BG	315	if (!minor->debugfs_root)
	316	return 0;
	317
086f2e5c	318	drm_debugfs_remove_all_files(minor);
28a62277	319
086f2e5c	320	debugfs_remove_recursive(minor->debugfs_root);
28a62277 BG	321	minor->debugfs_root = NULL;
	322
	323	return 0;
	324	}
	325
30f65707 TW	326	static int connector_show(struct seq_file m, void data)
	327	{
	328	struct drm_connector *connector = m->private;
30f65707	329
6140cf20	330	seq_printf(m, "%s\n", drm_get_connector_force_name(connector->force));
30f65707 TW	331
	332	return 0;
	333	}
	334
	335	static int connector_open(struct inode inode, struct file file)
	336	{
	337	struct drm_connector *dev = inode->i_private;
	338
	339	return single_open(file, connector_show, dev);
	340	}
	341
	342	static ssize_t connector_write(struct file file, const char __user ubuf,
	343	size_t len, loff_t *offp)
	344	{
	345	struct seq_file *m = file->private_data;
	346	struct drm_connector *connector = m->private;
	347	char buf[12];
	348
	349	if (len > sizeof(buf) - 1)
	350	return -EINVAL;
	351
	352	if (copy_from_user(buf, ubuf, len))
	353	return -EFAULT;
	354
	355	buf[len] = '\0';
	356
	357	if (!strcmp(buf, "on"))
	358	connector->force = DRM_FORCE_ON;
	359	else if (!strcmp(buf, "digital"))
	360	connector->force = DRM_FORCE_ON_DIGITAL;
	361	else if (!strcmp(buf, "off"))
	362	connector->force = DRM_FORCE_OFF;
	363	else if (!strcmp(buf, "unspecified"))
	364	connector->force = DRM_FORCE_UNSPECIFIED;
	365	else
	366	return -EINVAL;
	367
	368	return len;
	369	}
	370
4cf2b281 TW	371	static int edid_show(struct seq_file m, void data)
	372	{
	373	struct drm_connector *connector = m->private;
	374	struct drm_property_blob *edid = connector->edid_blob_ptr;
	375
	376	if (connector->override_edid && edid)
	377	seq_write(m, edid->data, edid->length);
	378
	379	return 0;
	380	}
	381
	382	static int edid_open(struct inode inode, struct file file)
	383	{
	384	struct drm_connector *dev = inode->i_private;
	385
	386	return single_open(file, edid_show, dev);
	387	}
	388
	389	static ssize_t edid_write(struct file file, const char __user ubuf,
	390	size_t len, loff_t *offp)
	391	{
	392	struct seq_file *m = file->private_data;
	393	struct drm_connector *connector = m->private;
	394	char *buf;
	395	struct edid *edid;
	396	int ret;
	397
	398	buf = memdup_user(ubuf, len);
	399	if (IS_ERR(buf))
	400	return PTR_ERR(buf);
	401
	402	edid = (struct edid *) buf;
	403
	404	if (len == 5 && !strncmp(buf, "reset", 5)) {
	405	connector->override_edid = false;
c555f023	406	ret = drm_connector_update_edid_property(connector, NULL);
4cf2b281 TW	407	} else if (len < EDID_LENGTH \|\|
	408	EDID_LENGTH * (1 + edid->extensions) > len)
	409	ret = -EINVAL;
	410	else {
	411	connector->override_edid = false;
c555f023	412	ret = drm_connector_update_edid_property(connector, edid);
4cf2b281 TW	413	if (!ret)
	414	connector->override_edid = true;
	415	}
	416
	417	kfree(buf);
	418
	419	return (ret) ? ret : len;
	420	}
	421
	422	static const struct file_operations drm_edid_fops = {
	423	.owner = THIS_MODULE,
	424	.open = edid_open,
	425	.read = seq_read,
	426	.llseek = seq_lseek,
	427	.release = single_release,
	428	.write = edid_write
	429	};
	430
	431
30f65707 TW	432	static const struct file_operations drm_connector_fops = {
	433	.owner = THIS_MODULE,
	434	.open = connector_open,
	435	.read = seq_read,
	436	.llseek = seq_lseek,
	437	.release = single_release,
	438	.write = connector_write
	439	};
	440
	441	int drm_debugfs_connector_add(struct drm_connector *connector)
	442	{
	443	struct drm_minor *minor = connector->dev->primary;
	444	struct dentry root, ent;
	445
	446	if (!minor->debugfs_root)
	447	return -1;
	448
	449	root = debugfs_create_dir(connector->name, minor->debugfs_root);
	450	if (!root)
	451	return -ENOMEM;
	452
	453	connector->debugfs_entry = root;
	454
	455	/* force */
	456	ent = debugfs_create_file("force", S_IRUGO \| S_IWUSR, root, connector,
	457	&drm_connector_fops);
	458	if (!ent)
	459	goto error;
	460
4cf2b281 TW	461	/* edid */
	462	ent = debugfs_create_file("edid_override", S_IRUGO \| S_IWUSR, root,
	463	connector, &drm_edid_fops);
	464	if (!ent)
	465	goto error;
	466
30f65707 TW	467	return 0;
	468
	469	error:
	470	debugfs_remove_recursive(connector->debugfs_entry);
	471	connector->debugfs_entry = NULL;
	472	return -ENOMEM;
	473	}
	474
	475	void drm_debugfs_connector_remove(struct drm_connector *connector)
	476	{
	477	if (!connector->debugfs_entry)
	478	return;
	479
	480	debugfs_remove_recursive(connector->debugfs_entry);
	481
	482	connector->debugfs_entry = NULL;
	483	}
	484
9edbf1fa TV	485	int drm_debugfs_crtc_add(struct drm_crtc *crtc)
	486	{
	487	struct drm_minor *minor = crtc->dev->primary;
	488	struct dentry *root;
	489	char *name;
	490
	491	name = kasprintf(GFP_KERNEL, "crtc-%d", crtc->index);
	492	if (!name)
	493	return -ENOMEM;
	494
	495	root = debugfs_create_dir(name, minor->debugfs_root);
	496	kfree(name);
	497	if (!root)
	498	return -ENOMEM;
	499
	500	crtc->debugfs_entry = root;
	501
	502	if (drm_debugfs_crtc_crc_add(crtc))
	503	goto error;
28a62277	504
9edbf1fa TV	505	return 0;
	506
	507	error:
	508	drm_debugfs_crtc_remove(crtc);
	509	return -ENOMEM;
	510	}
	511
	512	void drm_debugfs_crtc_remove(struct drm_crtc *crtc)
	513	{
	514	debugfs_remove_recursive(crtc->debugfs_entry);
	515	crtc->debugfs_entry = NULL;
	516	}
	517
	518	#endif /* CONFIG_DEBUG_FS */