1 /* 2 * Internal Header for the Direct Rendering Manager 3 * 4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 6 * Copyright (c) 2009-2010, Code Aurora Forum. 7 * All rights reserved. 8 * 9 * Author: Rickard E. (Rik) Faith <faith@valinux.com> 10 * Author: Gareth Hughes <gareth@valinux.com> 11 * 12 * Permission is hereby granted, free of charge, to any person obtaining a 13 * copy of this software and associated documentation files (the "Software"), 14 * to deal in the Software without restriction, including without limitation 15 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 16 * and/or sell copies of the Software, and to permit persons to whom the 17 * Software is furnished to do so, subject to the following conditions: 18 * 19 * The above copyright notice and this permission notice (including the next 20 * paragraph) shall be included in all copies or substantial portions of the 21 * Software. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 26 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 27 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 28 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 29 * OTHER DEALINGS IN THE SOFTWARE. 30 */ 31 32 #ifndef _DRM_DEBUGFS_H_ 33 #define _DRM_DEBUGFS_H_ 34 35 #include <linux/types.h> 36 #include <linux/seq_file.h> 37 /** 38 * struct drm_info_list - debugfs info list entry 39 * 40 * This structure represents a debugfs file to be created by the drm 41 * core. 42 */ 43 struct drm_info_list { 44 /** @name: file name */ 45 const char *name; 46 /** 47 * @show: 48 * 49 * Show callback. &seq_file->private will be set to the &struct 50 * drm_info_node corresponding to the instance of this info on a given 51 * &struct drm_minor. 52 */ 53 int (*show)(struct seq_file*, void*); 54 /** @driver_features: Required driver features for this entry */ 55 u32 driver_features; 56 /** @data: Driver-private data, should not be device-specific. */ 57 void *data; 58 }; 59 60 /** 61 * struct drm_info_node - Per-minor debugfs node structure 62 * 63 * This structure represents a debugfs file, as an instantiation of a &struct 64 * drm_info_list on a &struct drm_minor. 65 * 66 * FIXME: 67 * 68 * No it doesn't make a hole lot of sense that we duplicate debugfs entries for 69 * both the render and the primary nodes, but that's how this has organically 70 * grown. It should probably be fixed, with a compatibility link, if needed. 71 */ 72 struct drm_info_node { 73 /** @minor: &struct drm_minor for this node. */ 74 struct drm_minor *minor; 75 /** @info_ent: template for this node. */ 76 const struct drm_info_list *info_ent; 77 /* private: */ 78 struct list_head list; 79 struct dentry *dent; 80 }; 81 82 #if defined(CONFIG_DEBUG_FS) 83 int drm_debugfs_create_files(const struct drm_info_list *files, 84 int count, struct dentry *root, 85 struct drm_minor *minor); 86 int drm_debugfs_remove_files(const struct drm_info_list *files, 87 int count, struct drm_minor *minor); 88 #else 89 static inline int drm_debugfs_create_files(const struct drm_info_list *files, 90 int count, struct dentry *root, 91 struct drm_minor *minor) 92 { 93 return 0; 94 } 95 96 static inline int drm_debugfs_remove_files(const struct drm_info_list *files, 97 int count, struct drm_minor *minor) 98 { 99 return 0; 100 } 101 #endif 102 103 #endif /* _DRM_DEBUGFS_H_ */ 104