/* * Internal Header for the Direct Rendering Manager * * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * Copyright (c) 2009-2010, Code Aurora Forum. * All rights reserved. * * Author: Rickard E. (Rik) Faith <faith@valinux.com> * Author: Gareth Hughes <gareth@valinux.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. */ #ifndef _DRM_DEBUGFS_H_#define _DRM_DEBUGFS_H_ #include <linux/types.h>#include <linux/seq_file.h> #include <drm/drm_gpuvm.h> /** * DRM_DEBUGFS_GPUVA_INFO - &drm_info_list entry to dump a GPU VA space * @show: the &drm_info_list's show callback * @data: driver private data * * Drivers should use this macro to define a &drm_info_list entry to provide a * debugfs file for dumping the GPU VA space regions and mappings. * * For each DRM GPU VA space drivers should call drm_debugfs_gpuva_info() from * their @show callback. */#define DRM_DEBUGFS_GPUVA_INFO(show, data) {"gpuvas", show, 0, data} /** * struct drm_info_list - debugfs info list entry * * This structure represents a debugfs file to be created by the drm * core. */struct drm_info_list {	/** @name: file name */	const char *name;	/**	 * @show:	 *	 * Show callback. &seq_file->private will be set to the &struct	 * drm_info_node corresponding to the instance of this info on a given	 * &struct drm_minor.	 */	int (*show)(struct seq_file*, void*);	/** @driver_features: Required driver features for this entry */	u32 driver_features;	/** @data: Driver-private data, should not be device-specific. */	void *data;}; /** * struct drm_info_node - Per-minor debugfs node structure * * This structure represents a debugfs file, as an instantiation of a &struct * drm_info_list on a &struct drm_minor. * * FIXME: * * No it doesn't make a hole lot of sense that we duplicate debugfs entries for * both the render and the primary nodes, but that's how this has organically * grown. It should probably be fixed, with a compatibility link, if needed. */struct drm_info_node {	/** @minor: &struct drm_minor for this node. */	struct drm_minor *minor;	/** @info_ent: template for this node. */	const struct drm_info_list *info_ent;	/* private: */	struct list_head list;	struct dentry *dent;}; /** * struct drm_debugfs_info - debugfs info list entry * * This structure represents a debugfs file to be created by the drm * core. */struct drm_debugfs_info {	/** @name: File name */	const char *name; 	/**	 * @show:	 *	 * Show callback. &seq_file->private will be set to the &struct	 * drm_debugfs_entry corresponding to the instance of this info	 * on a given &struct drm_device.	 */	int (*show)(struct seq_file*, void*); 	/** @driver_features: Required driver features for this entry. */	u32 driver_features; 	/** @data: Driver-private data, should not be device-specific. */	void *data;}; /** * struct drm_debugfs_entry - Per-device debugfs node structure * * This structure represents a debugfs file, as an instantiation of a &struct * drm_debugfs_info on a &struct drm_device. */struct drm_debugfs_entry {	/** @dev: &struct drm_device for this node. */	struct drm_device *dev; 	/** @file: Template for this node. */	struct drm_debugfs_info file; 	/** @list: Linked list of all device nodes. */	struct list_head list;}; #if defined(CONFIG_DEBUG_FS)void drm_debugfs_create_files(const struct drm_info_list *files,			      int count, struct dentry *root,			      struct drm_minor *minor);int drm_debugfs_remove_files(const struct drm_info_list *files, int count,			     struct dentry *root, struct drm_minor *minor); void drm_debugfs_add_file(struct drm_device *dev, const char *name,			  int (*show)(struct seq_file*, void*), void *data); void drm_debugfs_add_files(struct drm_device *dev,			   const struct drm_debugfs_info *files, int count); int drm_debugfs_gpuva_info(struct seq_file *m,			   struct drm_gpuvm *gpuvm); void drm_debugfs_clients_add(struct drm_file *file);void drm_debugfs_clients_remove(struct drm_file *file);#elsestatic inline void drm_debugfs_create_files(const struct drm_info_list *files,					    int count, struct dentry *root,					    struct drm_minor *minor){} static inline int drm_debugfs_remove_files(const struct drm_info_list *files,					   int count, struct dentry *root,					   struct drm_minor *minor){	return 0;} static inline void drm_debugfs_add_file(struct drm_device *dev, const char *name,					int (*show)(struct seq_file*, void*),					void *data){} static inline void drm_debugfs_add_files(struct drm_device *dev,					 const struct drm_debugfs_info *files,					 int count){} static inline int drm_debugfs_gpuva_info(struct seq_file *m,					 struct drm_gpuvm *gpuvm){	return 0;} static inline void drm_debugfs_clients_add(struct drm_file *file){} static inline void drm_debugfs_clients_remove(struct drm_file *file){}#endif #endif /* _DRM_DEBUGFS_H_ */