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/*
* 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, DRIVER_GEM_GPUVA, 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);
#else
static 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;
}
#endif
#endif /* _DRM_DEBUGFS_H_ */
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