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 /** 36 * struct drm_info_list - debugfs info list entry 37 * 38 * This structure represents a debugfs file to be created by the drm 39 * core. 40 */ 41 struct drm_info_list { 42 /** @name: file name */ 43 const char *name; 44 /** 45 * @show: 46 * 47 * Show callback. &seq_file->private will be set to the &struct 48 * drm_info_node corresponding to the instance of this info on a given 49 * &struct drm_minor. 50 */ 51 int (*show)(struct seq_file*, void*); 52 /** @driver_features: Required driver features for this entry */ 53 u32 driver_features; 54 /** @data: Driver-private data, should not be device-specific. */ 55 void *data; 56 }; 57 58 /** 59 * struct drm_info_node - Per-minor debugfs node structure 60 * 61 * This structure represents a debugfs file, as an instantiation of a &struct 62 * drm_info_list on a &struct drm_minor. 63 * 64 * FIXME: 65 * 66 * No it doesn't make a hole lot of sense that we duplicate debugfs entries for 67 * both the render and the primary nodes, but that's how this has organically 68 * grown. It should probably be fixed, with a compatibility link, if needed. 69 */ 70 struct drm_info_node { 71 /** @minor: &struct drm_minor for this node. */ 72 struct drm_minor *minor; 73 /** @info_ent: template for this node. */ 74 const struct drm_info_list *info_ent; 75 /* private: */ 76 struct list_head list; 77 struct dentry *dent; 78 }; 79 80 #if defined(CONFIG_DEBUG_FS) 81 int drm_debugfs_create_files(const struct drm_info_list *files, 82 int count, struct dentry *root, 83 struct drm_minor *minor); 84 int drm_debugfs_remove_files(const struct drm_info_list *files, 85 int count, struct drm_minor *minor); 86 #else 87 static inline int drm_debugfs_create_files(const struct drm_info_list *files, 88 int count, struct dentry *root, 89 struct drm_minor *minor) 90 { 91 return 0; 92 } 93 94 static inline int drm_debugfs_remove_files(const struct drm_info_list *files, 95 int count, struct drm_minor *minor) 96 { 97 return 0; 98 } 99 #endif 100 101 #endif /* _DRM_DEBUGFS_H_ */ 102