diff options
Diffstat (limited to 'drivers/gpu/drm/drm_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/drm_debugfs.c | 887 |
1 files changed, 761 insertions, 126 deletions
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index a05087cf846d..365cf337529f 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -1,10 +1,3 @@ -/** - * \file drm_debugfs.c - * debugfs support for DRM - * - * \author Ben Gamari <bgamari@gmail.com> - */ - /* * Created: Sun Dec 21 13:08:50 2008 by bgamari@gmail.com * @@ -31,26 +24,134 @@ */ #include <linux/debugfs.h> +#include <linux/export.h> #include <linux/seq_file.h> #include <linux/slab.h> -#include <linux/export.h> -#include <drm/drmP.h> - -#if defined(CONFIG_DEBUG_FS) +#include <linux/uaccess.h> + +#include <drm/drm_atomic.h> +#include <drm/drm_auth.h> +#include <drm/drm_bridge.h> +#include <drm/drm_debugfs.h> +#include <drm/drm_device.h> +#include <drm/drm_drv.h> +#include <drm/drm_edid.h> +#include <drm/drm_file.h> +#include <drm/drm_gem.h> +#include <drm/drm_managed.h> +#include <drm/drm_gpuvm.h> + +#include "drm_crtc_internal.h" +#include "drm_internal.h" + +static struct dentry *accel_debugfs_root; +static struct dentry *drm_debugfs_root; /*************************************************** * Initialization, etc. **************************************************/ -static struct drm_info_list drm_debugfs_list[] = { +static int drm_name_info(struct seq_file *m, void *data) +{ + struct drm_debugfs_entry *entry = m->private; + struct drm_device *dev = entry->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_debugfs_entry *entry = m->private; + struct drm_device *dev = entry->dev; + struct drm_file *priv; + kuid_t uid; + + seq_printf(m, + "%20s %5s %3s master a %5s %10s %*s %20s\n", + "command", + "tgid", + "dev", + "uid", + "magic", + DRM_CLIENT_NAME_MAX_LEN, + "name", + "id"); + + /* 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) { + bool is_current_master = drm_is_current_master(priv); + struct task_struct *task; + struct pid *pid; + + mutex_lock(&priv->client_name_lock); + rcu_read_lock(); /* Locks priv->pid and pid_task()->comm! */ + pid = rcu_dereference(priv->pid); + task = pid_task(pid, PIDTYPE_TGID); + uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID; + seq_printf(m, "%20s %5d %3d %c %c %5d %10u %*s %20llu\n", + task ? task->comm : "<unknown>", + pid_vnr(pid), + priv->minor->index, + is_current_master ? 'y' : 'n', + priv->authenticated ? 'y' : 'n', + from_kuid_munged(seq_user_ns(m), uid), + priv->magic, + DRM_CLIENT_NAME_MAX_LEN, + priv->client_name ? priv->client_name : "<unset>", + priv->client_id); + rcu_read_unlock(); + mutex_unlock(&priv->client_name_lock); + } + 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_debugfs_entry *entry = m->private; + struct drm_device *dev = entry->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_debugfs_info drm_debugfs_list[] = { {"name", drm_name_info, 0}, - {"vm", drm_vm_info, 0}, {"clients", drm_clients_info, 0}, - {"bufs", drm_bufs_info, 0}, {"gem_names", drm_gem_name_info, DRIVER_GEM}, -#if DRM_DEBUG_CODE - {"vma", drm_vma_info, 0}, -#endif }; #define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list) @@ -59,9 +160,31 @@ static int drm_debugfs_open(struct inode *inode, struct file *file) { struct drm_info_node *node = inode->i_private; + if (!device_is_registered(node->minor->kdev)) + return -ENODEV; + return single_open(file, node->info_ent->show, node); } +static int drm_debugfs_entry_open(struct inode *inode, struct file *file) +{ + struct drm_debugfs_entry *entry = inode->i_private; + struct drm_debugfs_info *node = &entry->file; + struct drm_minor *minor = entry->dev->primary ?: entry->dev->accel; + + if (!device_is_registered(minor->kdev)) + return -ENODEV; + + return single_open(file, node->show, entry); +} + +static const struct file_operations drm_debugfs_entry_fops = { + .owner = THIS_MODULE, + .open = drm_debugfs_entry_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; static const struct file_operations drm_debugfs_fops = { .owner = THIS_MODULE, @@ -71,171 +194,683 @@ static const struct file_operations drm_debugfs_fops = { .release = single_release, }; - /** - * Initialize a given set of debugfs files for a device + * drm_debugfs_gpuva_info - dump the given DRM GPU VA space + * @m: pointer to the &seq_file to write + * @gpuvm: the &drm_gpuvm representing the GPU VA space + * + * Dumps the GPU VA mappings of a given DRM GPU VA manager. + * + * For each DRM GPU VA space drivers should call this function from their + * &drm_info_list's show callback. * - * \param files The array of files to create - * \param count The number of files given - * \param root DRI debugfs dir entry. - * \param minor device minor number - * \return Zero on success, non-zero on failure + * Returns: 0 on success, -ENODEV if the &gpuvm is not initialized + */ +int drm_debugfs_gpuva_info(struct seq_file *m, + struct drm_gpuvm *gpuvm) +{ + struct drm_gpuva *va, *kva = &gpuvm->kernel_alloc_node; + + if (!gpuvm->name) + return -ENODEV; + + seq_printf(m, "DRM GPU VA space (%s) [0x%016llx;0x%016llx]\n", + gpuvm->name, gpuvm->mm_start, gpuvm->mm_start + gpuvm->mm_range); + seq_printf(m, "Kernel reserved node [0x%016llx;0x%016llx]\n", + kva->va.addr, kva->va.addr + kva->va.range); + seq_puts(m, "\n"); + seq_puts(m, " VAs | start | range | end | object | object offset\n"); + seq_puts(m, "-------------------------------------------------------------------------------------------------------------\n"); + drm_gpuvm_for_each_va(va, gpuvm) { + if (unlikely(va == kva)) + continue; + + seq_printf(m, " | 0x%016llx | 0x%016llx | 0x%016llx | 0x%016llx | 0x%016llx\n", + va->va.addr, va->va.range, va->va.addr + va->va.range, + (u64)(uintptr_t)va->gem.obj, va->gem.offset); + } + + return 0; +} +EXPORT_SYMBOL(drm_debugfs_gpuva_info); + +/** + * 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 - * gdm_debugfs_lists in the given root directory. + * &struct drm_info_list in the given root directory. These files will be removed + * automatically on drm_debugfs_dev_fini(). */ -int drm_debugfs_create_files(struct drm_info_list *files, int count, - struct dentry *root, struct drm_minor *minor) +void 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; + int i; for (i = 0; i < count; i++) { u32 features = files[i].driver_features; - if (features != 0 && - (dev->driver->driver_features & features) != features) + if (features && !drm_core_check_all_features(dev, 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/%s/%s\n", - root->d_name.name, files[i].name); - kfree(tmp); - ret = -1; - goto fail; - } + tmp = drmm_kzalloc(dev, sizeof(*tmp), GFP_KERNEL); + if (tmp == NULL) + continue; tmp->minor = minor; - tmp->dent = ent; + tmp->dent = debugfs_create_file(files[i].name, + 0444, root, tmp, + &drm_debugfs_fops); tmp->info_ent = &files[i]; + } +} +EXPORT_SYMBOL(drm_debugfs_create_files); - mutex_lock(&minor->debugfs_lock); - list_add(&tmp->list, &minor->debugfs_list); - mutex_unlock(&minor->debugfs_lock); +int drm_debugfs_remove_files(const struct drm_info_list *files, int count, + struct dentry *root, struct drm_minor *minor) +{ + int i; + + for (i = 0; i < count; i++) { + struct dentry *dent = debugfs_lookup(files[i].name, root); + + if (!dent) + continue; + + drmm_kfree(minor->dev, d_inode(dent)->i_private); + debugfs_remove(dent); } return 0; +} +EXPORT_SYMBOL(drm_debugfs_remove_files); + +void drm_debugfs_bridge_params(void) +{ + drm_bridge_debugfs_params(drm_debugfs_root); +} + +void drm_debugfs_init_root(void) +{ + drm_debugfs_root = debugfs_create_dir("dri", NULL); +#if IS_ENABLED(CONFIG_DRM_ACCEL) + accel_debugfs_root = debugfs_create_dir("accel", NULL); +#endif +} + +void drm_debugfs_remove_root(void) +{ +#if IS_ENABLED(CONFIG_DRM_ACCEL) + debugfs_remove(accel_debugfs_root); +#endif + debugfs_remove(drm_debugfs_root); +} + +static int drm_debugfs_proc_info_show(struct seq_file *m, void *unused) +{ + struct pid *pid; + struct task_struct *task; + struct drm_file *file = m->private; + + if (!file) + return -EINVAL; + + rcu_read_lock(); + pid = rcu_dereference(file->pid); + task = pid_task(pid, PIDTYPE_TGID); + + seq_printf(m, "pid: %d\n", task ? task->pid : 0); + seq_printf(m, "comm: %s\n", task ? task->comm : "Unset"); + rcu_read_unlock(); + return 0; +} -fail: - drm_debugfs_remove_files(files, count, minor); - return ret; +static int drm_debufs_proc_info_open(struct inode *inode, struct file *file) +{ + return single_open(file, drm_debugfs_proc_info_show, inode->i_private); } -EXPORT_SYMBOL(drm_debugfs_create_files); + +static const struct file_operations drm_debugfs_proc_info_fops = { + .owner = THIS_MODULE, + .open = drm_debufs_proc_info_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; /** - * Initialize the DRI debugfs filesystem for a device + * drm_debugfs_clients_add - Add a per client debugfs directory + * @file: drm_file for a client * - * \param dev DRM device - * \param minor device minor number - * \param root DRI debugfs dir entry. + * Create the debugfs directory for each client. This will be used to populate + * driver specific data for each client. * - * Create the DRI debugfs root entry "/sys/kernel/debug/dri", the device debugfs root entry - * "/sys/kernel/debug/dri/%minor%/", and each entry in debugfs_list as - * "/sys/kernel/debug/dri/%minor%/%name%". + * Also add the process information debugfs file for each client to tag + * which client belongs to which process. */ -int drm_debugfs_init(struct drm_minor *minor, int minor_id, - struct dentry *root) +void drm_debugfs_clients_add(struct drm_file *file) +{ + char *client; + + client = kasprintf(GFP_KERNEL, "client-%llu", file->client_id); + if (!client) + return; + + /* Create a debugfs directory for the client in root on drm debugfs */ + file->debugfs_client = debugfs_create_dir(client, drm_debugfs_root); + kfree(client); + + debugfs_create_file("proc_info", 0444, file->debugfs_client, file, + &drm_debugfs_proc_info_fops); + + client = kasprintf(GFP_KERNEL, "../%s", file->minor->dev->unique); + if (!client) + return; + + /* Create a link from client_id to the drm device this client id belongs to */ + debugfs_create_symlink("device", file->debugfs_client, client); + kfree(client); +} + +/** + * drm_debugfs_clients_remove - removes all debugfs directories and files + * @file: drm_file for a client + * + * Removes the debugfs directories recursively from the client directory. + * + * There is also a possibility that debugfs files are open while the drm_file + * is released. + */ +void drm_debugfs_clients_remove(struct drm_file *file) +{ + debugfs_remove_recursive(file->debugfs_client); + file->debugfs_client = NULL; +} + +/** + * drm_debugfs_dev_init - create debugfs directory for the device + * @dev: the device which we want to create the directory for + * + * Creates the debugfs directory for the device under the given root directory. + */ +void drm_debugfs_dev_init(struct drm_device *dev) +{ + if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL)) + dev->debugfs_root = debugfs_create_dir(dev->unique, accel_debugfs_root); + else + dev->debugfs_root = debugfs_create_dir(dev->unique, drm_debugfs_root); +} + +/** + * drm_debugfs_dev_fini - cleanup debugfs directory + * @dev: the device to cleanup the debugfs stuff + * + * Remove the debugfs directory, might be called multiple times. + */ +void drm_debugfs_dev_fini(struct drm_device *dev) +{ + debugfs_remove_recursive(dev->debugfs_root); + dev->debugfs_root = NULL; +} + +void drm_debugfs_dev_register(struct drm_device *dev) +{ + drm_debugfs_add_files(dev, drm_debugfs_list, DRM_DEBUGFS_ENTRIES); + + if (drm_core_check_feature(dev, DRIVER_MODESET)) { + drm_framebuffer_debugfs_init(dev); + drm_client_debugfs_init(dev); + } + if (drm_drv_uses_atomic_modeset(dev)) + drm_atomic_debugfs_init(dev); +} + +int drm_debugfs_register(struct drm_minor *minor, int minor_id) { 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; - } + minor->debugfs_symlink = debugfs_create_symlink(name, drm_debugfs_root, + dev->unique); - 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; - } + /* TODO: Only for compatibility with drivers */ + minor->debugfs_root = dev->debugfs_root; + + if (dev->driver->debugfs_init && dev->render != minor) + dev->driver->debugfs_init(minor); - 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; } +void drm_debugfs_unregister(struct drm_minor *minor) +{ + debugfs_remove(minor->debugfs_symlink); + minor->debugfs_symlink = NULL; +} /** - * Remove a list of debugfs files + * drm_debugfs_add_file - Add a given file to the DRM device debugfs file list + * @dev: drm device for the ioctl + * @name: debugfs file name + * @show: show callback + * @data: driver-private data, should not be device-specific * - * \param files The list of files - * \param count The number of files - * \param minor The minor of which we should remove the files - * \return always zero. + * Add a given file entry to the DRM device debugfs file list to be created on + * drm_debugfs_init. + */ +void drm_debugfs_add_file(struct drm_device *dev, const char *name, + int (*show)(struct seq_file*, void*), void *data) +{ + struct drm_debugfs_entry *entry = drmm_kzalloc(dev, sizeof(*entry), GFP_KERNEL); + + if (!entry) + return; + + entry->file.name = name; + entry->file.show = show; + entry->file.data = data; + entry->dev = dev; + + debugfs_create_file(name, 0444, dev->debugfs_root, entry, + &drm_debugfs_entry_fops); +} +EXPORT_SYMBOL(drm_debugfs_add_file); + +/** + * drm_debugfs_add_files - Add an array of files to the DRM device debugfs file list + * @dev: drm device for the ioctl + * @files: The array of files to create + * @count: The number of files given * - * Remove all debugfs entries created by debugfs_init(). + * Add a given set of debugfs files represented by an array of + * &struct drm_debugfs_info in the DRM device debugfs file list. */ -int drm_debugfs_remove_files(struct drm_info_list *files, int count, - struct drm_minor *minor) +void drm_debugfs_add_files(struct drm_device *dev, const struct drm_debugfs_info *files, int count) { - 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); + for (i = 0; i < count; i++) + drm_debugfs_add_file(dev, files[i].name, files[i].show, files[i].data); +} +EXPORT_SYMBOL(drm_debugfs_add_files); + +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; } -EXPORT_SYMBOL(drm_debugfs_remove_files); -/** - * Cleanup the debugfs filesystem resources. - * - * \param minor device minor number. - * \return always zero. - * - * Remove all debugfs entries created by debugfs_init(). +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 (sysfs_streq(buf, "on")) + connector->force = DRM_FORCE_ON; + else if (sysfs_streq(buf, "digital")) + connector->force = DRM_FORCE_ON_DIGITAL; + else if (sysfs_streq(buf, "off")) + connector->force = DRM_FORCE_OFF; + else if (sysfs_streq(buf, "unspecified")) + connector->force = DRM_FORCE_UNSPECIFIED; + else + return -EINVAL; + + return len; +} + +static int edid_show(struct seq_file *m, void *data) +{ + return drm_edid_override_show(m->private, m); +} + +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; + int ret; + + buf = memdup_user(ubuf, len); + if (IS_ERR(buf)) + return PTR_ERR(buf); + + if (len == 5 && !strncmp(buf, "reset", 5)) + ret = drm_edid_override_reset(connector); + else + ret = drm_edid_override_set(connector, buf, len); + + kfree(buf); + + return ret ? ret : len; +} + +/* + * Returns the min and max vrr vfreq through the connector's debugfs file. + * Example usage: cat /sys/kernel/debug/dri/0/DP-1/vrr_range */ -int drm_debugfs_cleanup(struct drm_minor *minor) +static int vrr_range_show(struct seq_file *m, void *data) { - struct drm_device *dev = minor->dev; + struct drm_connector *connector = m->private; + + if (connector->status != connector_status_connected) + return -ENODEV; + + seq_printf(m, "Min: %u\n", connector->display_info.monitor_range.min_vfreq); + seq_printf(m, "Max: %u\n", connector->display_info.monitor_range.max_vfreq); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(vrr_range); + +/* + * Returns Connector's max supported bpc through debugfs file. + * Example usage: cat /sys/kernel/debug/dri/0/DP-1/output_bpc + */ +static int output_bpc_show(struct seq_file *m, void *data) +{ + struct drm_connector *connector = m->private; + + if (connector->status != connector_status_connected) + return -ENODEV; + + seq_printf(m, "Maximum: %u\n", connector->display_info.bpc); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(output_bpc); + +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 +}; - if (!minor->debugfs_root) - return 0; +static ssize_t +audio_infoframe_read(struct file *filp, char __user *ubuf, size_t count, loff_t *ppos) +{ + struct drm_connector_hdmi_infoframe *infoframe; + struct drm_connector *connector; + union hdmi_infoframe *frame; + u8 buf[HDMI_INFOFRAME_SIZE(AUDIO)]; + ssize_t len = 0; + + connector = filp->private_data; + mutex_lock(&connector->hdmi.infoframes.lock); + + infoframe = &connector->hdmi.infoframes.audio; + if (!infoframe->set) + goto out; - if (dev->driver->debugfs_cleanup) - dev->driver->debugfs_cleanup(minor); + frame = &infoframe->data; + len = hdmi_infoframe_pack(frame, buf, sizeof(buf)); + if (len < 0) + goto out; - drm_debugfs_remove_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES, minor); + len = simple_read_from_buffer(ubuf, count, ppos, buf, len); + +out: + mutex_unlock(&connector->hdmi.infoframes.lock); + return len; +} + +static const struct file_operations audio_infoframe_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = audio_infoframe_read, +}; + +static int create_hdmi_audio_infoframe_file(struct drm_connector *connector, + struct dentry *parent) +{ + struct dentry *file; - debugfs_remove(minor->debugfs_root); - minor->debugfs_root = NULL; + file = debugfs_create_file("audio", 0400, parent, connector, &audio_infoframe_fops); + if (IS_ERR(file)) + return PTR_ERR(file); return 0; } -#endif /* CONFIG_DEBUG_FS */ +#define DEFINE_INFOFRAME_FILE(_f) \ +static ssize_t _f##_read_infoframe(struct file *filp, \ + char __user *ubuf, \ + size_t count, \ + loff_t *ppos) \ +{ \ + struct drm_connector_hdmi_infoframe *infoframe; \ + struct drm_connector_state *conn_state; \ + struct drm_connector *connector; \ + union hdmi_infoframe *frame; \ + struct drm_device *dev; \ + u8 buf[HDMI_INFOFRAME_SIZE(MAX)]; \ + ssize_t len = 0; \ + \ + connector = filp->private_data; \ + dev = connector->dev; \ + \ + drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); \ + \ + conn_state = connector->state; \ + infoframe = &conn_state->hdmi.infoframes._f; \ + if (!infoframe->set) \ + goto out; \ + \ + frame = &infoframe->data; \ + len = hdmi_infoframe_pack(frame, buf, sizeof(buf)); \ + if (len < 0) \ + goto out; \ + \ + len = simple_read_from_buffer(ubuf, count, ppos, buf, len); \ + \ +out: \ + drm_modeset_unlock(&dev->mode_config.connection_mutex); \ + return len; \ +} \ +\ +static const struct file_operations _f##_infoframe_fops = { \ + .owner = THIS_MODULE, \ + .open = simple_open, \ + .read = _f##_read_infoframe, \ +}; \ +\ +static int create_hdmi_## _f ## _infoframe_file(struct drm_connector *connector, \ + struct dentry *parent) \ +{ \ + struct dentry *file; \ + \ + file = debugfs_create_file(#_f, 0400, parent, connector, &_f ## _infoframe_fops); \ + if (IS_ERR(file)) \ + return PTR_ERR(file); \ + \ + return 0; \ +} + +DEFINE_INFOFRAME_FILE(avi); +DEFINE_INFOFRAME_FILE(hdmi); +DEFINE_INFOFRAME_FILE(hdr_drm); +DEFINE_INFOFRAME_FILE(spd); + +static int create_hdmi_infoframe_files(struct drm_connector *connector, + struct dentry *parent) +{ + int ret; + + ret = create_hdmi_audio_infoframe_file(connector, parent); + if (ret) + return ret; + + ret = create_hdmi_avi_infoframe_file(connector, parent); + if (ret) + return ret; + + ret = create_hdmi_hdmi_infoframe_file(connector, parent); + if (ret) + return ret; + + ret = create_hdmi_hdr_drm_infoframe_file(connector, parent); + if (ret) + return ret; + + ret = create_hdmi_spd_infoframe_file(connector, parent); + if (ret) + return ret; + + return 0; +} + +static void hdmi_debugfs_add(struct drm_connector *connector) +{ + struct dentry *dir; + + if (!(connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || + connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)) + return; + + dir = debugfs_create_dir("infoframes", connector->debugfs_entry); + if (IS_ERR(dir)) + return; + + create_hdmi_infoframe_files(connector, dir); +} + +void drm_debugfs_connector_add(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct dentry *root; + if (!dev->debugfs_root) + return; + + root = debugfs_create_dir(connector->name, dev->debugfs_root); + connector->debugfs_entry = root; + + /* force */ + debugfs_create_file("force", 0644, root, connector, + &drm_connector_fops); + + /* edid */ + debugfs_create_file("edid_override", 0644, root, connector, + &drm_edid_fops); + + /* vrr range */ + debugfs_create_file("vrr_range", 0444, root, connector, + &vrr_range_fops); + + /* max bpc */ + debugfs_create_file("output_bpc", 0444, root, connector, + &output_bpc_fops); + + hdmi_debugfs_add(connector); + + if (connector->funcs->debugfs_init) + connector->funcs->debugfs_init(connector, root); +} + +void drm_debugfs_connector_remove(struct drm_connector *connector) +{ + if (!connector->debugfs_entry) + return; + + debugfs_remove_recursive(connector->debugfs_entry); + + connector->debugfs_entry = NULL; +} + +void drm_debugfs_crtc_add(struct drm_crtc *crtc) +{ + struct drm_device *dev = crtc->dev; + struct dentry *root; + char *name; + + name = kasprintf(GFP_KERNEL, "crtc-%d", crtc->index); + if (!name) + return; + + root = debugfs_create_dir(name, dev->debugfs_root); + kfree(name); + + crtc->debugfs_entry = root; + + drm_debugfs_crtc_crc_add(crtc); +} + +void drm_debugfs_crtc_remove(struct drm_crtc *crtc) +{ + debugfs_remove_recursive(crtc->debugfs_entry); + crtc->debugfs_entry = NULL; +} + +void drm_debugfs_encoder_add(struct drm_encoder *encoder) +{ + struct drm_minor *minor = encoder->dev->primary; + struct dentry *root; + char *name; + + name = kasprintf(GFP_KERNEL, "encoder-%d", encoder->index); + if (!name) + return; + + root = debugfs_create_dir(name, minor->debugfs_root); + kfree(name); + + encoder->debugfs_entry = root; + + drm_bridge_debugfs_encoder_params(root, encoder); + + if (encoder->funcs && encoder->funcs->debugfs_init) + encoder->funcs->debugfs_init(encoder, root); +} + +void drm_debugfs_encoder_remove(struct drm_encoder *encoder) +{ + debugfs_remove_recursive(encoder->debugfs_entry); + encoder->debugfs_entry = NULL; +} |