Commit ac4f24c2 authored by Sam Ravnborg's avatar Sam Ravnborg Committed by Daniel Vetter
Browse files

drm: drm_device.h: update comments to kernel-doc style 



Updated comment style to kernel-doc format in drm_device.h

In struct drm_device there are 12 struct members without doc:
- registered
- filelist_mutex
- filelist
- irq
- vbl_lock
- event_lock
- hose
- sigdata
- sigdata.context
- sigdata.lock
- agp_buffer_map
- agp_buffer_token

They all need proper documentation, a task left for someone
that knows their usage.

drm_device is not plugged into Documentation/gpu/drm-internals.rst
as this would create a new load of warnings.

Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190108192939.15255-2-sam@ravnborg.org
parent 4fb6bb89

include/drm/drm_device.h

+134 −65
Original line number Diff line number Diff line
@@ -25,24 +25,48 @@ struct pci_dev; 
struct pci_controller;



/**

 * DRM device structure. This structure represent a complete card that

 * struct drm_device - DRM device structure

 *

 * This structure represent a complete card that

 * may contain multiple heads.

 */

struct drm_device {

	struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */

	int if_version;			/**< Highest interface version set */



	/** \name Lifetime Management */

	/*@{ */

	struct kref ref;		/**< Object ref-count */

	struct device *dev;		/**< Device structure of bus-device */

	struct drm_driver *driver;	/**< DRM driver managing the device */

	void *dev_private;		/**< DRM driver private data */

	struct drm_minor *primary;		/**< Primary node */

	struct drm_minor *render;		/**< Render node */

	/**

	 * @legacy_dev_list:

	 *

	 * List of devices per driver for stealth attach cleanup

	 */

	struct list_head legacy_dev_list;



	/** @if_version: Highest interface version set */

	int if_version;



	/** @ref: Object ref-count */

	struct kref ref;



	/** @dev: Device structure of bus-device */

	struct device *dev;



	/** @driver: DRM driver managing the device */

	struct drm_driver *driver;



	/** @dev_private: DRM driver private data */

	void *dev_private;



	/** @primary: Primary node */

	struct drm_minor *primary;



	/** @render: Render node */

	struct drm_minor *render;



	bool registered;



	/* currently active master for this device. Protected by master_mutex */

	/**

	 * @master:

	 *

	 * Currently active master for this device.

	 * Protected by &master_mutex

	 */

	struct drm_master *master;



	/**
@@ -63,23 +87,42 @@ struct drm_device { 
	 */

	bool unplugged;



	struct inode *anon_inode;		/**< inode for private address-space */

	char *unique;				/**< unique name of the device */

	/*@} */

	/** @anon_inode: inode for private address-space */

	struct inode *anon_inode;



	/** \name Locks */

	/*@{ */

	struct mutex struct_mutex;	/**< For others */

	struct mutex master_mutex;      /**< For drm_minor::master and drm_file::is_master */

	/*@} */

	/** @unique: Unique name of the device */

	char *unique;



	/** \name Usage Counters */

	/*@{ */

	int open_count;			/**< Outstanding files open, protected by drm_global_mutex. */

	spinlock_t buf_lock;		/**< For drm_device::buf_use and a few other things. */

	int buf_use;			/**< Buffers in use -- cannot alloc */

	atomic_t buf_alloc;		/**< Buffer allocation in progress */

	/*@} */

	/**

	 * @struct_mutex:

	 *

	 * Lock for others (not &drm_minor.master and &drm_file.is_master)

	 */

	struct mutex struct_mutex;



	/**

	 * @master_mutex:

	 *

	 * Lock for &drm_minor.master and &drm_file.is_master

	 */

	struct mutex master_mutex;



	/**

	 * @open_count:

	 *

	 * Usage counter for outstanding files open,

	 * protected by drm_global_mutex

	 */

	int open_count;



	/** @buf_lock: Lock for &buf_use and a few other things. */

	spinlock_t buf_lock;



	/** @buf_use: Usage counter for buffers in use -- cannot alloc */

	int buf_use;



	/** @buf_alloc: Buffer allocation in progress */

	atomic_t buf_alloc;



	struct mutex filelist_mutex;

	struct list_head filelist;
@@ -87,51 +130,64 @@ struct drm_device { 
	/**

	 * @filelist_internal:

	 *

	 * List of open DRM files for in-kernel clients. Protected by @filelist_mutex.

	 * List of open DRM files for in-kernel clients.

	 * Protected by &filelist_mutex.

	 */

	struct list_head filelist_internal;



	/**

	 * @clientlist_mutex:

	 *

	 * Protects @clientlist access.

	 * Protects &clientlist access.

	 */

	struct mutex clientlist_mutex;



	/**

	 * @clientlist:

	 *

	 * List of in-kernel clients. Protected by @clientlist_mutex.

	 * List of in-kernel clients. Protected by &clientlist_mutex.

	 */

	struct list_head clientlist;



	/** \name Memory management */

	/*@{ */

	struct list_head maplist;	/**< Linked list of regions */

	struct drm_open_hash map_hash;	/**< User token hash table for maps */

	/** @maplist: Memory management - linked list of regions */

	struct list_head maplist;



	/** \name Context handle management */

	/*@{ */

	struct list_head ctxlist;	/**< Linked list of context handles */

	struct mutex ctxlist_mutex;	/**< For ctxlist */

	/** @map_hash: Memory management - user token hash table for maps */

	struct drm_open_hash map_hash;



	struct idr ctx_idr;

	/**

	 * @ctxlist:

	 * Context handle management - linked list of context handles

	 */

	struct list_head ctxlist;



	struct list_head vmalist;	/**< List of vmas (for debugging) */

	/**

	 * @ctxlist_mutex:

	 *

	 * Context handle management - mutex for &ctxlist

	 */

	struct mutex ctxlist_mutex;



	/*@} */

	/**

	 * @ctx_idr:

	 * Context handle management

	 */

	struct idr ctx_idr;



	/** \name DMA support */

	/*@{ */

	struct drm_device_dma *dma;		/**< Optional pointer for DMA support */

	/*@} */

	/**

	 * @vmalist:

	 * Context handle management - list of vmas (for debugging)

	 */

	struct list_head vmalist;



	/** @dma: Optional pointer for DMA support */

	struct drm_device_dma *dma;



	/** \name Context support */

	/*@{ */

	/** @context_flag: Context swapping flag */

	__volatile__ long context_flag;



	__volatile__ long context_flag;	/**< Context swapping flag */

	int last_context;		/**< Last current context */

	/*@} */

	/** @last_context: Last current context */

	int last_context;



	/**

	 * @irq_enabled:
@@ -168,7 +224,12 @@ struct drm_device { 
	 */

	struct drm_vblank_crtc *vblank;



	spinlock_t vblank_time_lock;    /**< Protects vblank count and time updates during vblank enable/disable */

	/**

	 * @vblank_time_lock:

	 *

	 *  Protects vblank count and time updates during vblank enable/disable

	 */

	spinlock_t vblank_time_lock;

	spinlock_t vbl_lock;



	/**
@@ -186,25 +247,29 @@ struct drm_device { 
	 *

	 * If non-zeor, &drm_crtc_funcs.get_vblank_counter must be set.

	 */

	u32 max_vblank_count;           /**< size of vblank counter register */



	/**

	 * List of events

	 */

	/** @max_vblank_count: Size of vblank counter register */

	u32 max_vblank_count;



	/** @vblank_event_list: List of vblank events */

	struct list_head vblank_event_list;

	spinlock_t event_lock;



	/*@} */

	/** @agp: AGP data */

	struct drm_agp_head *agp;



	struct drm_agp_head *agp;	/**< AGP data */

	/** @pdev: PCI device structure */

	struct pci_dev *pdev;



	struct pci_dev *pdev;		/**< PCI device structure */

#ifdef __alpha__

	struct pci_controller *hose;

#endif



	struct drm_sg_mem *sg;	/**< Scatter gather memory */

	unsigned int num_crtcs;                  /**< Number of CRTCs on this device */

	/** @sg: Scatter gather memory */

	struct drm_sg_mem *sg;



	/** @num_crtcs: Number of CRTCs on this device */

	unsigned int num_crtcs;



	struct {

		int context;
@@ -214,14 +279,18 @@ struct drm_device { 
	struct drm_local_map *agp_buffer_map;

	unsigned int agp_buffer_token;



	struct drm_mode_config mode_config;	/**< Current mode config */

	/** @mode_config: Current mode config */

	struct drm_mode_config mode_config;



	/** \name GEM information */

	/*@{ */

	/** @object_name_lock: GEM information */

	struct mutex object_name_lock;



	/** @object_name_idr: GEM information */

	struct idr object_name_idr;



	/** @vma_offset_manager: GEM information */

	struct drm_vma_offset_manager *vma_offset_manager;

	/*@} */



	int switch_power_state;



	/**

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