/* * 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_debugfs.h>#include <drm/drm_edid.h>#include <drm/drm_atomic.h>#include <drm/drmP.h> #include "drm_internal.h"#include "drm_crtc_internal.h" #if defined(CONFIG_DEBUG_FS) /*************************************************** * Initialization, etc. **************************************************/ 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_core_check_feature(dev, DRIVER_ATOMIC)) { ret = drm_atomic_debugfs_init(minor); if (ret) { DRM_ERROR("Failed to create atomic debugfs files\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_mode_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_mode_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 */
/*
* 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_debugfs.h>
#include <drm/drm_edid.h>
#include <drm/drm_atomic.h>
#include <drm/drmP.h>
#include "drm_internal.h"
#include "drm_crtc_internal.h"
#if defined(CONFIG_DEBUG_FS)
/***************************************************
* Initialization, etc.
**************************************************/
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_core_check_feature(dev, DRIVER_ATOMIC)) {
ret = drm_atomic_debugfs_init(minor);
if (ret) {
DRM_ERROR("Failed to create atomic debugfs files\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_mode_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_mode_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 */