WebSVN – Kolibri OS – Diff – /drivers/include/drm/drmP.h


/*
 * 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 
 * Author: Gareth Hughes 
 *
 * 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_P_H_
#define _DRM_P_H_
 
#include 
#include 
 
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struct module;
 
struct drm_file;
struct drm_device;
struct drm_agp_head;
struct drm_local_map;
struct drm_device_dma;
struct drm_dma_handle;
struct drm_gem_object;
 
struct device_node;
struct videomode;
struct reservation_object;
struct dma_buf_attachment;
 
struct inode;
struct poll_table_struct;
struct sg_table;
 
#define KHZ2PICOS(a) (1000000000UL/(a))
 
/*
 * 4 debug categories are defined:
 *
 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
 *	 This is the category used by the DRM_DEBUG() macro.
 *
 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
 *	   This is the category used by the DRM_DEBUG_DRIVER() macro.
 *
 * KMS: used in the modesetting code.
 *	This is the category used by the DRM_DEBUG_KMS() macro.
 *
 * PRIME: used in the prime code.
 *	  This is the category used by the DRM_DEBUG_PRIME() macro.
 *
 * ATOMIC: used in the atomic code.
 *	  This is the category used by the DRM_DEBUG_ATOMIC() macro.
 *
 * VBL: used for verbose debug message in the vblank code
 *	  This is the category used by the DRM_DEBUG_VBL() macro.
 *
 * Enabling verbose debug messages is done through the drm.debug parameter,
 * each category being enabled by a bit.
 *
 * drm.debug=0x1 will enable CORE messages
 * drm.debug=0x2 will enable DRIVER messages
 * drm.debug=0x3 will enable CORE and DRIVER messages
 * ...
 * drm.debug=0x3f will enable all messages
 *
 * An interesting feature is that it's possible to enable verbose logging at
 * run-time by echoing the debug value in its sysfs node:
 *   # echo 0xf > /sys/module/drm/parameters/debug
 */
#define DRM_UT_CORE 		0x01
#define DRM_UT_DRIVER		0x02
#define DRM_UT_KMS		0x04
#define DRM_UT_PRIME		0x08
#define DRM_UT_ATOMIC		0x10
#define DRM_UT_VBL		0x20
 
extern __printf(2, 3)
void drm_ut_debug_printk(const char *function_name,
			 const char *format, ...);
extern __printf(1, 2)
void drm_err(const char *format, ...);
 
/***********************************************************************/
/** \name DRM template customization defaults */
/*@{*/
 
/* driver capabilities and requirements mask */
#define DRIVER_USE_AGP			0x1
#define DRIVER_PCI_DMA			0x8
#define DRIVER_SG			0x10
#define DRIVER_HAVE_DMA			0x20
#define DRIVER_HAVE_IRQ			0x40
#define DRIVER_IRQ_SHARED		0x80
#define DRIVER_GEM			0x1000
#define DRIVER_MODESET			0x2000
#define DRIVER_PRIME			0x4000
#define DRIVER_RENDER			0x8000
#define DRIVER_ATOMIC			0x10000
#define DRIVER_KMS_LEGACY_CONTEXT	0x20000
 
/***********************************************************************/
/** \name Macros to make printk easier */
/*@{*/
 
/**
 * Error output.
 *
 * \param fmt printf() like format string.
 * \param arg arguments
 */
#define DRM_ERROR(fmt, ...)				\
    printk("DRM Error " fmt, ##__VA_ARGS__)
 
/**
 * Rate limited error output.  Like DRM_ERROR() but won't flood the log.
 *
 * \param fmt printf() like format string.
 * \param arg arguments
 */
#define DRM_ERROR_RATELIMITED(fmt, ...)				\
({									\
	static DEFINE_RATELIMIT_STATE(_rs,				\
				      DEFAULT_RATELIMIT_INTERVAL,	\
				      DEFAULT_RATELIMIT_BURST);		\
									\
	if (__ratelimit(&_rs))						\
		drm_err(fmt, ##__VA_ARGS__);				\
})
 
#if DRM_DEBUG_CODE
 
#define DRM_INFO(fmt, ...)				\
	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
 
#define DRM_INFO_ONCE(fmt, ...)				\
	printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
 
/**
 * Debug output.
 *
 * \param fmt printf() like format string.
 * \param arg arguments
 */
 
#define DRM_DEBUG(fmt, args...)						\
    do {                                                    \
    printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args);  \
	} while (0)
 
#define DRM_DEBUG_DRIVER(fmt, args...)					\
    do {                                                    \
    printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args);  \
	} while (0)
#define DRM_DEBUG_KMS(fmt, args...)					\
	do {								\
    printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args);  \
	} while (0)
#define DRM_DEBUG_PRIME(fmt, args...)					\
	do {								\
    printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args);  \
	} while (0)
#define DRM_DEBUG_ATOMIC(fmt, args...)					\
	do {								\
		printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args);  \
	} while (0)
#define DRM_DEBUG_VBL(fmt, args...)					\
	do {								\
		printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args);  \
	} while (0)
 
#else
#define DRM_INFO(fmt, ...)              do { } while (0)
#define DRM_DEBUG_DRIVER(fmt, args...)  do { } while (0)
#define DRM_DEBUG_KMS(fmt, args...)     do { } while (0)
#define DRM_DEBUG_PRIME(fmt, args...)	do { } while (0)
#define DRM_DEBUG(fmt, arg...)          do { } while (0)
#define DRM_DEBUG_ATOMIC(fmt, args...)  do { } while (0)
#define DRM_DEBUG_VBL(fmt, args...)     do { } while (0)
#endif
/*@}*/
 
/***********************************************************************/
/** \name Internal types and structures */
/*@{*/
 
#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 
/**
 * Ioctl function type.
 *
 * \param inode device inode.
 * \param file_priv DRM file private pointer.
 * \param cmd command.
 * \param arg argument.
 */
typedef int drm_ioctl_t(struct drm_device *dev, void *data,
			struct drm_file *file_priv);
 
typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
			       unsigned long arg);
 
#define DRM_IOCTL_NR(n)                _IOC_NR(n)
#define DRM_MAJOR       226
 
#define DRM_AUTH	0x1
#define	DRM_MASTER	0x2
#define DRM_ROOT_ONLY	0x4
#define DRM_CONTROL_ALLOW 0x8
#define DRM_UNLOCKED	0x10
#define DRM_RENDER_ALLOW 0x20
 
struct drm_ioctl_desc {
	unsigned int cmd;
	int flags;
	drm_ioctl_t *func;
	const char *name;
};
 
/**
 * Creates a driver or general drm_ioctl_desc array entry for the given
 * ioctl, for use by drm_ioctl().
 */
 
#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags)				\
	[DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {	\
		.cmd = DRM_IOCTL_##ioctl,				\
		.func = _func,						\
		.flags = _flags,					\
		.name = #ioctl						\
	 }
 
/* Event queued up for userspace to read */
struct drm_pending_event {
	struct drm_event *event;
	struct list_head link;
	struct list_head pending_link;
	struct drm_file *file_priv;
	pid_t pid; /* pid of requester, no guarantee it's valid by the time
		      we deliver the event, for tracing only */
	void (*destroy)(struct drm_pending_event *event);
};
 
/* initial implementaton using a linked list - todo hashtab */
struct drm_prime_file_private {
	struct list_head head;
	struct mutex lock;
};
 
/** File private data */
struct drm_file {
	unsigned authenticated :1;
	/* Whether we're master for a minor. Protected by master_mutex */
	unsigned is_master :1;
	/* true when the client has asked us to expose stereo 3D mode flags */
	unsigned stereo_allowed :1;
	/*
	 * true if client understands CRTC primary planes and cursor planes
	 * in the plane list
	 */
	unsigned universal_planes:1;
	/* true if client understands atomic properties */
	unsigned atomic:1;
	/*
	 * This client is allowed to gain master privileges for @master.
	 * Protected by struct drm_device::master_mutex.
	 */
	unsigned allowed_master:1;
	struct list_head lhead;
	struct drm_minor *minor;
	unsigned long lock_count;
 
	/** Mapping of mm object handles to object pointers. */
	struct idr object_idr;
	/** Lock for synchronization of access to object_idr. */
	spinlock_t table_lock;
 
	void *driver_priv;
 
	struct drm_master *master; /* master this node is currently associated with
				      N.B. not always minor->master */
	/**
	 * fbs - List of framebuffers associated with this file.
	 *
	 * Protected by fbs_lock. Note that the fbs list holds a reference on
	 * the fb object to prevent it from untimely disappearing.
	 */
	struct list_head fbs;
	struct mutex fbs_lock;
 
	/** User-created blob properties; this retains a reference on the
	 *  property. */
	struct list_head blobs;
 
	wait_queue_head_t event_wait;
	struct list_head pending_event_list;
	struct list_head event_list;
	int event_space;
 
	struct mutex event_read_lock;
};
 
/**
 * Lock data.
 */
struct drm_lock_data {
	struct drm_hw_lock *hw_lock;	/**< Hardware lock */
	/** Private of lock holder's file (NULL=kernel) */
	struct drm_file *file_priv;
	wait_queue_head_t lock_queue;	/**< Queue of blocked processes */
	unsigned long lock_time;	/**< Time of last lock in jiffies */
	spinlock_t spinlock;
	uint32_t kernel_waiters;
	uint32_t user_waiters;
	int idle_has_lock;
};
 
/**
 * struct drm_master - drm master structure
 *
 * @refcount: Refcount for this master object.
 * @minor: Link back to minor char device we are master for. Immutable.
 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
 * @unique_len: Length of unique field. Protected by drm_global_mutex.
 * @magic_map: Map of used authentication tokens. Protected by struct_mutex.
 * @lock: DRI lock information.
 * @driver_priv: Pointer to driver-private information.
 */
struct drm_master {
	struct kref refcount;
	struct drm_minor *minor;
	char *unique;
	int unique_len;
	struct idr magic_map;
	struct drm_lock_data lock;
	void *driver_priv;
};
 
/* Size of ringbuffer for vblank timestamps. Just double-buffer
 * in initial implementation.
 */
#define DRM_VBLANKTIME_RBSIZE 2
 
/* Flags and return codes for get_vblank_timestamp() driver function. */
#define DRM_CALLED_FROM_VBLIRQ 1
#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
#define DRM_VBLANKTIME_IN_VBLANK         (1 << 1)
 
/* get_scanout_position() return flags */
#define DRM_SCANOUTPOS_VALID        (1 << 0)
#define DRM_SCANOUTPOS_IN_VBLANK    (1 << 1)
#define DRM_SCANOUTPOS_ACCURATE     (1 << 2)
 
/**
 * DRM driver structure. This structure represent the common code for
 * a family of cards. There will one drm_device for each card present
 * in this family
 */
struct drm_driver {
	int (*load) (struct drm_device *, unsigned long flags);
	int (*open) (struct drm_device *, struct drm_file *);
 
	/**
	 * get_vblank_counter - get raw hardware vblank counter
	 * @dev: DRM device
	 * @pipe: counter to fetch
	 *
	 * Driver callback for fetching a raw hardware vblank counter for @crtc.
	 * If a device doesn't have a hardware counter, the driver can simply
	 * return the value of drm_vblank_count. The DRM core will account for
	 * missed vblank events while interrupts where disabled based on system
	 * timestamps.
	 *
	 * Wraparound handling and loss of events due to modesetting is dealt
	 * with in the DRM core code.
	 *
	 * RETURNS
	 * Raw vblank counter value.
	 */
	u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe);
 
	/**
	 * enable_vblank - enable vblank interrupt events
	 * @dev: DRM device
	 * @pipe: which irq to enable
	 *
	 * Enable vblank interrupts for @crtc.  If the device doesn't have
	 * a hardware vblank counter, this routine should be a no-op, since
	 * interrupts will have to stay on to keep the count accurate.
	 *
	 * RETURNS
	 * Zero on success, appropriate errno if the given @crtc's vblank
	 * interrupt cannot be enabled.
	 */
	int (*enable_vblank) (struct drm_device *dev, unsigned int pipe);
 
	/**
	 * disable_vblank - disable vblank interrupt events
	 * @dev: DRM device
	 * @pipe: which irq to enable
	 *
	 * Disable vblank interrupts for @crtc.  If the device doesn't have
	 * a hardware vblank counter, this routine should be a no-op, since
	 * interrupts will have to stay on to keep the count accurate.
	 */
	void (*disable_vblank) (struct drm_device *dev, unsigned int pipe);
 
	/**
	 * Called by \c drm_device_is_agp.  Typically used to determine if a
	 * card is really attached to AGP or not.
	 *
	 * \param dev  DRM device handle
	 *
	 * \returns
	 * One of three values is returned depending on whether or not the
	 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
	 * (return of 1), or may or may not be AGP (return of 2).
	 */
	int (*device_is_agp) (struct drm_device *dev);
 
	/**
	 * Called by vblank timestamping code.
	 *
	 * Return the current display scanout position from a crtc, and an
	 * optional accurate ktime_get timestamp of when position was measured.
	 *
	 * \param dev  DRM device.
	 * \param pipe Id of the crtc to query.
	 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
	 * \param *vpos Target location for current vertical scanout position.
	 * \param *hpos Target location for current horizontal scanout position.
	 * \param *stime Target location for timestamp taken immediately before
	 *               scanout position query. Can be NULL to skip timestamp.
	 * \param *etime Target location for timestamp taken immediately after
	 *               scanout position query. Can be NULL to skip timestamp.
	 * \param mode Current display timings.
	 *
	 * Returns vpos as a positive number while in active scanout area.
	 * Returns vpos as a negative number inside vblank, counting the number
	 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
	 * until start of active scanout / end of vblank."
	 *
	 * \return Flags, or'ed together as follows:
	 *
	 * DRM_SCANOUTPOS_VALID = Query successful.
	 * DRM_SCANOUTPOS_INVBL = Inside vblank.
	 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
	 * this flag means that returned position may be offset by a constant
	 * but unknown small number of scanlines wrt. real scanout position.
	 *
	 */
	int (*get_scanout_position) (struct drm_device *dev, unsigned int pipe,
				     unsigned int flags, int *vpos, int *hpos,
				     ktime_t *stime, ktime_t *etime,
				     const struct drm_display_mode *mode);
 
	/**
	 * Called by \c drm_get_last_vbltimestamp. Should return a precise
	 * timestamp when the most recent VBLANK interval ended or will end.
	 *
	 * Specifically, the timestamp in @vblank_time should correspond as
	 * closely as possible to the time when the first video scanline of
	 * the video frame after the end of VBLANK will start scanning out,
	 * the time immediately after end of the VBLANK interval. If the
	 * @crtc is currently inside VBLANK, this will be a time in the future.
	 * If the @crtc is currently scanning out a frame, this will be the
	 * past start time of the current scanout. This is meant to adhere
	 * to the OpenML OML_sync_control extension specification.
	 *
	 * \param dev dev DRM device handle.
	 * \param pipe crtc for which timestamp should be returned.
	 * \param *max_error Maximum allowable timestamp error in nanoseconds.
	 *                   Implementation should strive to provide timestamp
	 *                   with an error of at most *max_error nanoseconds.
	 *                   Returns true upper bound on error for timestamp.
	 * \param *vblank_time Target location for returned vblank timestamp.
	 * \param flags 0 = Defaults, no special treatment needed.
	 * \param       DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
	 *	        irq handler. Some drivers need to apply some workarounds
	 *              for gpu-specific vblank irq quirks if flag is set.
	 *
	 * \returns
	 * Zero if timestamping isn't supported in current display mode or a
	 * negative number on failure. A positive status code on success,
	 * which describes how the vblank_time timestamp was computed.
	 */
	int (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe,
				     int *max_error,
				     struct timeval *vblank_time,
				     unsigned flags);
 
	/* these have to be filled in */
 
	irqreturn_t(*irq_handler) (int irq, void *arg);
	void (*irq_preinstall) (struct drm_device *dev);
	int (*irq_postinstall) (struct drm_device *dev);
	void (*irq_uninstall) (struct drm_device *dev);
 
	/**
	 * Driver-specific constructor for drm_gem_objects, to set up
	 * obj->driver_private.
	 *
	 * Returns 0 on success.
	 */
	void (*gem_free_object) (struct drm_gem_object *obj);
	int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
	void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
	u32 driver_features;
	int dev_priv_size;
};
 
enum drm_minor_type {
	DRM_MINOR_LEGACY,
	DRM_MINOR_CONTROL,
	DRM_MINOR_RENDER,
	DRM_MINOR_CNT,
};
 
/**
 * Info file list entry. This structure represents a debugfs or proc file to
 * be created by the drm core
 */
struct drm_info_list {
	const char *name; /** file name */
//   int (*show)(struct seq_file*, void*); /** show callback */
	u32 driver_features; /**< Required driver features for this entry */
	void *data;
};
 
/**
 * debugfs node structure. This structure represents a debugfs file.
 */
struct drm_info_node {
	struct list_head list;
	struct drm_minor *minor;
	const struct drm_info_list *info_ent;
	struct dentry *dent;
};
 
/**
 * DRM minor structure. This structure represents a drm minor number.
 */
struct drm_minor {
	int index;			/**< Minor device number */
	int type;                       /**< Control or render */
	struct device *kdev;		/**< Linux device */
	struct drm_device *dev;
 
	struct dentry *debugfs_root;
 
	struct list_head debugfs_list;
	struct mutex debugfs_lock; /* Protects debugfs_list. */
 
	/* currently active master for this node. Protected by master_mutex */
	struct drm_master *master;
};
 
 
struct drm_pending_vblank_event {
	struct drm_pending_event base;
	unsigned int pipe;
	struct drm_event_vblank event;
};
 
struct drm_vblank_crtc {
	struct drm_device *dev;		/* pointer to the drm_device */
	wait_queue_head_t queue;	/**< VBLANK wait queue */
	struct timer_list disable_timer;		/* delayed disable timer */
 
	/* vblank counter, protected by dev->vblank_time_lock for writes */
	u32 count;
	/* vblank timestamps, protected by dev->vblank_time_lock for writes */
	struct timeval time[DRM_VBLANKTIME_RBSIZE];
 
	atomic_t refcount;		/* number of users of vblank interruptsper crtc */
	u32 last;			/* protected by dev->vbl_lock, used */
					/* for wraparound handling */
	u32 last_wait;			/* Last vblank seqno waited per CRTC */
	unsigned int inmodeset;		/* Display driver is setting mode */
	unsigned int pipe;		/* crtc index */
	int framedur_ns;		/* frame/field duration in ns */
	int linedur_ns;			/* line duration in ns */
	bool enabled;			/* so we don't call enable more than
					   once per disable */
};
 
/**
 * 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 *control;		/**< Control node */
	struct drm_minor *primary;		/**< Primary node */
	struct drm_minor *render;		/**< Render node */
	atomic_t unplugged;			/**< Flag whether dev is dead */
	/** \name Locks */
	/*@{ */
	struct mutex struct_mutex;	/**< For others */
	struct mutex master_mutex;      /**< For drm_minor::master and drm_file::is_master */
	/*@} */
 
	/** \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 list_head filelist;
 
	/** \name Memory management */
	/*@{ */
	struct list_head maplist;	/**< Linked list of regions */
 
	/** \name Context handle management */
	/*@{ */
	struct list_head ctxlist;	/**< Linked list of context handles */
	struct mutex ctxlist_mutex;	/**< For ctxlist */
 
	struct idr ctx_idr;
 
	struct list_head vmalist;	/**< List of vmas (for debugging) */
 
	/*@} */
 
	/** \name DMA support */
	/*@{ */
//   struct drm_device_dma *dma;     /**< Optional pointer for DMA support */
	/*@} */
 
	/** \name Context support */
	/*@{ */
 
	__volatile__ long context_flag;	/**< Context swapping flag */
	int last_context;		/**< Last current context */
	/*@} */
 
	/** \name VBLANK IRQ support */
	/*@{ */
	bool irq_enabled;
	int irq;
 
	/*
	 * At load time, disabling the vblank interrupt won't be allowed since
	 * old clients may not call the modeset ioctl and therefore misbehave.
	 * Once the modeset ioctl *has* been called though, we can safely
	 * disable them when unused.
	 */
	bool vblank_disable_allowed;
 
	/*
	 * If true, vblank interrupt will be disabled immediately when the
	 * refcount drops to zero, as opposed to via the vblank disable
	 * timer.
	 * This can be set to true it the hardware has a working vblank
	 * counter and the driver uses drm_vblank_on() and drm_vblank_off()
	 * appropriately.
	 */
	bool vblank_disable_immediate;
 
	/* array of size num_crtcs */
	struct drm_vblank_crtc *vblank;
 
	spinlock_t vblank_time_lock;    /**< Protects vblank count and time updates during vblank enable/disable */
	spinlock_t vbl_lock;
 
	u32 max_vblank_count;           /**< size of vblank counter register */
 
	/**
	 * List of events
	 */
	struct list_head vblank_event_list;
	spinlock_t event_lock;
 
	/*@} */
 
//   struct drm_agp_head *agp;   /**< AGP data */
 
	struct pci_dev *pdev;		/**< PCI device structure */
#ifdef __alpha__
	struct pci_controller *hose;
#endif
 
	unsigned int num_crtcs;                  /**< Number of CRTCs on this device */
 
	struct {
		int context;
		struct drm_hw_lock *lock;
	} sigdata;
 
	struct drm_mode_config mode_config;	/**< Current mode config */
 
	/** \name GEM information */
	/*@{ */
	struct mutex object_name_lock;
	struct idr object_name_idr;
	struct drm_vma_offset_manager *vma_offset_manager;
	/*@} */
	int switch_power_state;
};
 
#define DRM_SWITCH_POWER_ON 0
#define DRM_SWITCH_POWER_OFF 1
#define DRM_SWITCH_POWER_CHANGING 2
#define DRM_SWITCH_POWER_DYNAMIC_OFF 3
 
static __inline__ int drm_core_check_feature(struct drm_device *dev,
					     int feature)
{
	return ((dev->driver->driver_features & feature) ? 1 : 0);
}
 
static inline void drm_device_set_unplugged(struct drm_device *dev)
{
	smp_wmb();
	atomic_set(&dev->unplugged, 1);
}
 
static inline int drm_device_is_unplugged(struct drm_device *dev)
{
	int ret = atomic_read(&dev->unplugged);
	smp_rmb();
	return ret;
}
 
 
/******************************************************************/
/** \name Internal function definitions */
/*@{*/
 
				/* Driver support (drm_drv.h) */
extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv);
extern long drm_ioctl(struct file *filp,
		      unsigned int cmd, unsigned long arg);
extern long drm_compat_ioctl(struct file *filp,
			     unsigned int cmd, unsigned long arg);
extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
 
/* File Operations (drm_fops.c) */
int drm_open(struct inode *inode, struct file *filp);
ssize_t drm_read(struct file *filp, char __user *buffer,
		 size_t count, loff_t *offset);
int drm_release(struct inode *inode, struct file *filp);
 
int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv);
unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
int drm_event_reserve_init_locked(struct drm_device *dev,
				  struct drm_file *file_priv,
				  struct drm_pending_event *p,
				  struct drm_event *e);
int drm_event_reserve_init(struct drm_device *dev,
			   struct drm_file *file_priv,
			   struct drm_pending_event *p,
			   struct drm_event *e);
void drm_event_cancel_free(struct drm_device *dev,
			   struct drm_pending_event *p);
void drm_send_event_locked(struct drm_device *dev, struct drm_pending_event *e);
void drm_send_event(struct drm_device *dev, struct drm_pending_event *e);
 
/* Misc. IOCTL support (drm_ioctl.c) */
int drm_noop(struct drm_device *dev, void *data,
	     struct drm_file *file_priv);
int drm_invalid_op(struct drm_device *dev, void *data,
		   struct drm_file *file_priv);
 
/* Cache management (drm_cache.c) */
void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
void drm_clflush_sg(struct sg_table *st);
void drm_clflush_virt_range(void *addr, unsigned long length);
 
/*
 * These are exported to drivers so that they can implement fencing using
 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
 */
 
				/* IRQ support (drm_irq.h) */
extern int drm_irq_install(struct drm_device *dev, int irq);
extern int drm_irq_uninstall(struct drm_device *dev);
 
extern int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs);
extern int drm_wait_vblank(struct drm_device *dev, void *data,
			   struct drm_file *filp);
extern u32 drm_vblank_count(struct drm_device *dev, unsigned int pipe);
extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc);
extern u32 drm_vblank_count_and_time(struct drm_device *dev, unsigned int pipe,
				     struct timeval *vblanktime);
extern u32 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc,
					  struct timeval *vblanktime);
extern void drm_send_vblank_event(struct drm_device *dev, unsigned int pipe,
				  struct drm_pending_vblank_event *e);
extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc,
				       struct drm_pending_vblank_event *e);
extern void drm_arm_vblank_event(struct drm_device *dev, unsigned int pipe,
				 struct drm_pending_vblank_event *e);
extern void drm_crtc_arm_vblank_event(struct drm_crtc *crtc,
				      struct drm_pending_vblank_event *e);
extern bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe);
extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc);
extern int drm_vblank_get(struct drm_device *dev, unsigned int pipe);
extern void drm_vblank_put(struct drm_device *dev, unsigned int pipe);
extern int drm_crtc_vblank_get(struct drm_crtc *crtc);
extern void drm_crtc_vblank_put(struct drm_crtc *crtc);
extern void drm_wait_one_vblank(struct drm_device *dev, unsigned int pipe);
extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc);
extern void drm_vblank_off(struct drm_device *dev, unsigned int pipe);
extern void drm_vblank_on(struct drm_device *dev, unsigned int pipe);
extern void drm_crtc_vblank_off(struct drm_crtc *crtc);
extern void drm_crtc_vblank_reset(struct drm_crtc *crtc);
extern void drm_crtc_vblank_on(struct drm_crtc *crtc);
extern void drm_vblank_cleanup(struct drm_device *dev);
extern u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe);
 
extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
						 unsigned int pipe, int *max_error,
						 struct timeval *vblank_time,
						 unsigned flags,
						 const struct drm_display_mode *mode);
extern void drm_calc_timestamping_constants(struct drm_crtc *crtc,
					    const struct drm_display_mode *mode);
 
/**
 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC
 * @crtc: which CRTC's vblank waitqueue to retrieve
 *
 * This function returns a pointer to the vblank waitqueue for the CRTC.
 * Drivers can use this to implement vblank waits using wait_event() & co.
 */
static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc)
{
	return &crtc->dev->vblank[drm_crtc_index(crtc)].queue;
}
 
/* Modesetting support */
extern void drm_vblank_pre_modeset(struct drm_device *dev, unsigned int pipe);
extern void drm_vblank_post_modeset(struct drm_device *dev, unsigned int pipe);
 
				/* Stub support (drm_stub.h) */
extern struct drm_master *drm_master_get(struct drm_master *master);
extern void drm_master_put(struct drm_master **master);
 
extern void drm_put_dev(struct drm_device *dev);
extern void drm_unplug_dev(struct drm_device *dev);
extern unsigned int drm_debug;
extern bool drm_atomic;
 
				/* Debugfs support */
#if defined(CONFIG_DEBUG_FS)
extern int drm_debugfs_create_files(const struct drm_info_list *files,
				    int count, struct dentry *root,
				    struct drm_minor *minor);
extern int drm_debugfs_remove_files(const struct drm_info_list *files,
				    int count, struct drm_minor *minor);
#else
static inline int drm_debugfs_create_files(const struct drm_info_list *files,
					   int count, struct dentry *root,
					   struct drm_minor *minor)
{
	return 0;
}
 
static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
					   int count, struct drm_minor *minor)
{
	return 0;
}
#endif
 
extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
		struct drm_gem_object *obj, int flags);
extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
		struct drm_file *file_priv, uint32_t handle, uint32_t flags,
		int *prime_fd);
extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
		struct dma_buf *dma_buf);
extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
		struct drm_file *file_priv, int prime_fd, uint32_t *handle);
extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
 
extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
					    dma_addr_t *addrs, int max_pages);
extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages);
extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
 
 
extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size,
					    size_t align);
extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah);
 
			       /* sysfs support (drm_sysfs.c) */
extern void drm_sysfs_hotplug_event(struct drm_device *dev);
 
 
struct drm_device *drm_dev_alloc(struct drm_driver *driver,
				 struct device *parent);
void drm_dev_ref(struct drm_device *dev);
void drm_dev_unref(struct drm_device *dev);
int drm_dev_register(struct drm_device *dev, unsigned long flags);
void drm_dev_unregister(struct drm_device *dev);
int drm_dev_set_unique(struct drm_device *dev, const char *name);
 
struct drm_minor *drm_minor_acquire(unsigned int minor_id);
void drm_minor_release(struct drm_minor *minor);
 
/*@}*/
 
/* PCI section */
static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
{
 
	return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
}
void drm_pci_agp_destroy(struct drm_device *dev);
 
#if 0
extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
extern int drm_get_pci_dev(struct pci_dev *pdev,
			   const struct pci_device_id *ent,
			   struct drm_driver *driver);
static inline int drm_pci_set_busid(struct drm_device *dev,
				    struct drm_master *master)
{
	return -ENOSYS;
}
#endif
 
#define DRM_PCIE_SPEED_25 1
#define DRM_PCIE_SPEED_50 2
#define DRM_PCIE_SPEED_80 4
 
extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
extern int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw);
 
/* platform section */
extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
extern int drm_platform_set_busid(struct drm_device *d, struct drm_master *m);
 
/* returns true if currently okay to sleep */
static __inline__ bool drm_can_sleep(void)
{
	return true;
}
 
/* helper for handling conditionals in various for_each macros */
#define for_each_if(condition) if (!(condition)) {} else
 
static __inline__ int drm_device_is_pcie(struct drm_device *dev)
{
    return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
}
 
#define LFB_SIZE 0x1000000
extern struct drm_device *main_device;
extern struct drm_file *drm_file_handlers[256];
 
#endif

Rev 6936	Rev 7143
1	/*	1	/*
2	* Internal Header for the Direct Rendering Manager	2	* Internal Header for the Direct Rendering Manager
3	*	3	*
4	* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.	4	* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
5	* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.	5	* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
6	* Copyright (c) 2009-2010, Code Aurora Forum.	6	* Copyright (c) 2009-2010, Code Aurora Forum.
7	* All rights reserved.	7	* All rights reserved.
8	*	8	*
9	* Author: Rickard E. (Rik) Faith	9	* Author: Rickard E. (Rik) Faith
10	* Author: Gareth Hughes	10	* Author: Gareth Hughes
11	*	11	*
12	* Permission is hereby granted, free of charge, to any person obtaining a	12	* Permission is hereby granted, free of charge, to any person obtaining a
13	* copy of this software and associated documentation files (the "Software"),	13	* copy of this software and associated documentation files (the "Software"),
14	* to deal in the Software without restriction, including without limitation	14	* to deal in the Software without restriction, including without limitation
15	* the rights to use, copy, modify, merge, publish, distribute, sublicense,	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	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:	17	* Software is furnished to do so, subject to the following conditions:
18	*	18	*
19	* The above copyright notice and this permission notice (including the next	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	20	* paragraph) shall be included in all copies or substantial portions of the
21	* Software.	21	* Software.
22	*	22	*
23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR	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,	24	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL	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	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,	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	28	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
29	* OTHER DEALINGS IN THE SOFTWARE.	29	* OTHER DEALINGS IN THE SOFTWARE.
30	*/	30	*/
31		31
32	#ifndef _DRM_P_H_	32	#ifndef _DRM_P_H_
33	#define _DRM_P_H_	33	#define _DRM_P_H_
34		34
35	#include	35	#include
36	#include	36	#include
37		37
38	#include	38	#include
39	#include	39	#include
40	#include	40	#include
41	#include	41	#include
42	#include	42	#include
43	#include	43	#include
44	#include	44	#include
45	#include	45	#include
46	#include	46	#include
47	#include	47	#include
48		-
49	#include	-
50	#include	48	#include
51	#include	49	#include
52	#include	50	#include
53	#include	51	#include
54		52
55	#include	53	#include
56	#include	54	#include
57		55
58		56
59	#include	57	#include
60	#include	58	#include
61	#include	59	#include
62	#include	60	#include
63	#include	61	#include
-		62
-		63	#include
64		64
65	#include	65	#include
66	#include	66	#include
67		67
68	#include	68	#include
69	#include	69	#include
70	#include	70	#include
71	#include	71	#include
72	#include	72	#include
73	#include	73	#include
74	#include	74	#include
75	#include	75	#include
76	#include	76	#include
77		77
78	struct module;	78	struct module;
79		79
80	struct drm_file;	80	struct drm_file;
81	struct drm_device;	81	struct drm_device;
82	struct drm_agp_head;	82	struct drm_agp_head;
83	struct drm_local_map;	83	struct drm_local_map;
84	struct drm_device_dma;	84	struct drm_device_dma;
85	struct drm_dma_handle;	85	struct drm_dma_handle;
86	struct drm_gem_object;	86	struct drm_gem_object;
87		87
88	struct device_node;	88	struct device_node;
89	struct videomode;	89	struct videomode;
90	struct reservation_object;	90	struct reservation_object;
91	struct dma_buf_attachment;	91	struct dma_buf_attachment;
92		92
93	struct inode;	93	struct inode;
94	struct poll_table_struct;	94	struct poll_table_struct;
95	struct sg_table;	95	struct sg_table;
96		96
97	#define KHZ2PICOS(a) (1000000000UL/(a))	97	#define KHZ2PICOS(a) (1000000000UL/(a))
98		98
99	/*	99	/*
100	* 4 debug categories are defined:	100	* 4 debug categories are defined:
101	*	101	*
102	* CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...	102	* CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
103	* This is the category used by the DRM_DEBUG() macro.	103	* This is the category used by the DRM_DEBUG() macro.
104	*	104	*
105	* DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...	105	* DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
106	* This is the category used by the DRM_DEBUG_DRIVER() macro.	106	* This is the category used by the DRM_DEBUG_DRIVER() macro.
107	*	107	*
108	* KMS: used in the modesetting code.	108	* KMS: used in the modesetting code.
109	* This is the category used by the DRM_DEBUG_KMS() macro.	109	* This is the category used by the DRM_DEBUG_KMS() macro.
110	*	110	*
111	* PRIME: used in the prime code.	111	* PRIME: used in the prime code.
112	* This is the category used by the DRM_DEBUG_PRIME() macro.	112	* This is the category used by the DRM_DEBUG_PRIME() macro.
113	*	113	*
114	* ATOMIC: used in the atomic code.	114	* ATOMIC: used in the atomic code.
115	* This is the category used by the DRM_DEBUG_ATOMIC() macro.	115	* This is the category used by the DRM_DEBUG_ATOMIC() macro.
116	*	116	*
117	* VBL: used for verbose debug message in the vblank code	117	* VBL: used for verbose debug message in the vblank code
118	* This is the category used by the DRM_DEBUG_VBL() macro.	118	* This is the category used by the DRM_DEBUG_VBL() macro.
119	*	119	*
120	* Enabling verbose debug messages is done through the drm.debug parameter,	120	* Enabling verbose debug messages is done through the drm.debug parameter,
121	* each category being enabled by a bit.	121	* each category being enabled by a bit.
122	*	122	*
123	* drm.debug=0x1 will enable CORE messages	123	* drm.debug=0x1 will enable CORE messages
124	* drm.debug=0x2 will enable DRIVER messages	124	* drm.debug=0x2 will enable DRIVER messages
125	* drm.debug=0x3 will enable CORE and DRIVER messages	125	* drm.debug=0x3 will enable CORE and DRIVER messages
126	* ...	126	* ...
127	* drm.debug=0x3f will enable all messages	127	* drm.debug=0x3f will enable all messages
128	*	128	*
129	* An interesting feature is that it's possible to enable verbose logging at	129	* An interesting feature is that it's possible to enable verbose logging at
130	* run-time by echoing the debug value in its sysfs node:	130	* run-time by echoing the debug value in its sysfs node:
131	* # echo 0xf > /sys/module/drm/parameters/debug	131	* # echo 0xf > /sys/module/drm/parameters/debug
132	*/	132	*/
133	#define DRM_UT_CORE 0x01	133	#define DRM_UT_CORE 0x01
134	#define DRM_UT_DRIVER 0x02	134	#define DRM_UT_DRIVER 0x02
135	#define DRM_UT_KMS 0x04	135	#define DRM_UT_KMS 0x04
136	#define DRM_UT_PRIME 0x08	136	#define DRM_UT_PRIME 0x08
137	#define DRM_UT_ATOMIC 0x10	137	#define DRM_UT_ATOMIC 0x10
138	#define DRM_UT_VBL 0x20	138	#define DRM_UT_VBL 0x20
139		139
140	extern __printf(2, 3)	140	extern __printf(2, 3)
141	void drm_ut_debug_printk(const char *function_name,	141	void drm_ut_debug_printk(const char *function_name,
142	const char *format, ...);	142	const char *format, ...);
143	extern __printf(1, 2)	143	extern __printf(1, 2)
144	void drm_err(const char *format, ...);	144	void drm_err(const char *format, ...);
145		145
146	/***********************************************************************/	146	/***********************************************************************/
147	/** \name DRM template customization defaults */	147	/** \name DRM template customization defaults */
148	/@{/	148	/@{/
149		149
150	/* driver capabilities and requirements mask */	150	/* driver capabilities and requirements mask */
151	#define DRIVER_USE_AGP 0x1	151	#define DRIVER_USE_AGP 0x1
152	#define DRIVER_PCI_DMA 0x8	152	#define DRIVER_PCI_DMA 0x8
153	#define DRIVER_SG 0x10	153	#define DRIVER_SG 0x10
154	#define DRIVER_HAVE_DMA 0x20	154	#define DRIVER_HAVE_DMA 0x20
155	#define DRIVER_HAVE_IRQ 0x40	155	#define DRIVER_HAVE_IRQ 0x40
156	#define DRIVER_IRQ_SHARED 0x80	156	#define DRIVER_IRQ_SHARED 0x80
157	#define DRIVER_GEM 0x1000	157	#define DRIVER_GEM 0x1000
158	#define DRIVER_MODESET 0x2000	158	#define DRIVER_MODESET 0x2000
159	#define DRIVER_PRIME 0x4000	159	#define DRIVER_PRIME 0x4000
160	#define DRIVER_RENDER 0x8000	160	#define DRIVER_RENDER 0x8000
161	#define DRIVER_ATOMIC 0x10000	161	#define DRIVER_ATOMIC 0x10000
162	#define DRIVER_KMS_LEGACY_CONTEXT 0x20000	162	#define DRIVER_KMS_LEGACY_CONTEXT 0x20000
163		163
164	/***********************************************************************/	164	/***********************************************************************/
165	/** \name Macros to make printk easier */	165	/** \name Macros to make printk easier */
166	/@{/	166	/@{/
167		167
168	/**	168	/**
169	* Error output.	169	* Error output.
170	*	170	*
171	* \param fmt printf() like format string.	171	* \param fmt printf() like format string.
172	* \param arg arguments	172	* \param arg arguments
173	*/	173	*/
174	#define DRM_ERROR(fmt, ...) \	174	#define DRM_ERROR(fmt, ...) \
175	printk("DRM Error" fmt, ##__VA_ARGS__)	175	printk("DRM Error " fmt, ##__VA_ARGS__)
176		176
177	/**	177	/**
178	* Rate limited error output. Like DRM_ERROR() but won't flood the log.	178	* Rate limited error output. Like DRM_ERROR() but won't flood the log.
179	*	179	*
180	* \param fmt printf() like format string.	180	* \param fmt printf() like format string.
181	* \param arg arguments	181	* \param arg arguments
182	*/	182	*/
183	#define DRM_ERROR_RATELIMITED(fmt, ...) \	183	#define DRM_ERROR_RATELIMITED(fmt, ...) \
184	({ \	184	({ \
185	static DEFINE_RATELIMIT_STATE(_rs, \	185	static DEFINE_RATELIMIT_STATE(_rs, \
186	DEFAULT_RATELIMIT_INTERVAL, \	186	DEFAULT_RATELIMIT_INTERVAL, \
187	DEFAULT_RATELIMIT_BURST); \	187	DEFAULT_RATELIMIT_BURST); \
188	\	188	\
189	if (__ratelimit(&_rs)) \	189	if (__ratelimit(&_rs)) \
190	drm_err(fmt, ##__VA_ARGS__); \	190	drm_err(fmt, ##__VA_ARGS__); \
191	})	191	})
-		192
-		193	#if DRM_DEBUG_CODE
192		194
193	#define DRM_INFO(fmt, ...) \	195	#define DRM_INFO(fmt, ...) \
194	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)	196	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
195		197
196	#define DRM_INFO_ONCE(fmt, ...) \	198	#define DRM_INFO_ONCE(fmt, ...) \
197	printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)	199	printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
198		200
199	/**	201	/**
200	* Debug output.	202	* Debug output.
201	*	203	*
202	* \param fmt printf() like format string.	204	* \param fmt printf() like format string.
203	* \param arg arguments	205	* \param arg arguments
204	*/	206	*/
205	#if DRM_DEBUG_CODE	-
206	#define DRM_DEBUG(fmt, args...) \	207	#define DRM_DEBUG(fmt, args...) \
207	do { \	208	do { \
208	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	209	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
209	} while (0)	210	} while (0)
210		211
211	#define DRM_DEBUG_DRIVER(fmt, args...) \	212	#define DRM_DEBUG_DRIVER(fmt, args...) \
212	do { \	213	do { \
213	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	214	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
214	} while (0)	215	} while (0)
215	#define DRM_DEBUG_KMS(fmt, args...) \	216	#define DRM_DEBUG_KMS(fmt, args...) \
216	do { \	217	do { \
217	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	218	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
218	} while (0)	219	} while (0)
219	#define DRM_DEBUG_PRIME(fmt, args...) \	220	#define DRM_DEBUG_PRIME(fmt, args...) \
220	do { \	221	do { \
221	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	222	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
222	} while (0)	223	} while (0)
223	#define DRM_DEBUG_ATOMIC(fmt, args...) \	224	#define DRM_DEBUG_ATOMIC(fmt, args...) \
224	do { \	225	do { \
225	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	226	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
226	} while (0)	227	} while (0)
227	#define DRM_DEBUG_VBL(fmt, args...) \	228	#define DRM_DEBUG_VBL(fmt, args...) \
228	do { \	229	do { \
229	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	230	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
230	} while (0)	231	} while (0)
231		232
232	#else	233	#else
-		234	#define DRM_INFO(fmt, ...) do { } while (0)
233	#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)	235	#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
234	#define DRM_DEBUG_KMS(fmt, args...) do { } while (0)	236	#define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
235	#define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)	237	#define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
236	#define DRM_DEBUG(fmt, arg...) do { } while (0)	238	#define DRM_DEBUG(fmt, arg...) do { } while (0)
237	#define DRM_DEBUG_ATOMIC(fmt, args...) do { } while (0)	239	#define DRM_DEBUG_ATOMIC(fmt, args...) do { } while (0)
238	#define DRM_DEBUG_VBL(fmt, args...) do { } while (0)	240	#define DRM_DEBUG_VBL(fmt, args...) do { } while (0)
239	#endif	241	#endif
240	/@}/	242	/@}/
241		243
242	/***********************************************************************/	244	/***********************************************************************/
243	/** \name Internal types and structures */	245	/** \name Internal types and structures */
244	/@{/	246	/@{/
245		247
246	#define DRM_IF_VERSION(maj, min) (maj << 16 \| min)	248	#define DRM_IF_VERSION(maj, min) (maj << 16 \| min)
247		249
248	/**	250	/**
249	* Ioctl function type.	251	* Ioctl function type.
250	*	252	*
251	* \param inode device inode.	253	* \param inode device inode.
252	* \param file_priv DRM file private pointer.	254	* \param file_priv DRM file private pointer.
253	* \param cmd command.	255	* \param cmd command.
254	* \param arg argument.	256	* \param arg argument.
255	*/	257	*/
256	typedef int drm_ioctl_t(struct drm_device dev, void data,	258	typedef int drm_ioctl_t(struct drm_device dev, void data,
257	struct drm_file *file_priv);	259	struct drm_file *file_priv);
258		260
259	typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,	261	typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
260	unsigned long arg);	262	unsigned long arg);
261		263
262	#define DRM_IOCTL_NR(n) _IOC_NR(n)	264	#define DRM_IOCTL_NR(n) _IOC_NR(n)
263	#define DRM_MAJOR 226	265	#define DRM_MAJOR 226
264		266
265	#define DRM_AUTH 0x1	267	#define DRM_AUTH 0x1
266	#define DRM_MASTER 0x2	268	#define DRM_MASTER 0x2
267	#define DRM_ROOT_ONLY 0x4	269	#define DRM_ROOT_ONLY 0x4
268	#define DRM_CONTROL_ALLOW 0x8	270	#define DRM_CONTROL_ALLOW 0x8
269	#define DRM_UNLOCKED 0x10	271	#define DRM_UNLOCKED 0x10
270	#define DRM_RENDER_ALLOW 0x20	272	#define DRM_RENDER_ALLOW 0x20
271		273
272	struct drm_ioctl_desc {	274	struct drm_ioctl_desc {
273	unsigned int cmd;	275	unsigned int cmd;
274	int flags;	276	int flags;
275	drm_ioctl_t *func;	277	drm_ioctl_t *func;
276	const char *name;	278	const char *name;
277	};	279	};
278		280
279	/**	281	/**
280	* Creates a driver or general drm_ioctl_desc array entry for the given	282	* Creates a driver or general drm_ioctl_desc array entry for the given
281	* ioctl, for use by drm_ioctl().	283	* ioctl, for use by drm_ioctl().
282	*/	284	*/
283		285
284	#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \	286	#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
285	[DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = { \	287	[DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = { \
286	.cmd = DRM_IOCTL_##ioctl, \	288	.cmd = DRM_IOCTL_##ioctl, \
287	.func = _func, \	289	.func = _func, \
288	.flags = _flags, \	290	.flags = _flags, \
289	.name = #ioctl \	291	.name = #ioctl \
290	}	292	}
291		293
292	/* Event queued up for userspace to read */	294	/* Event queued up for userspace to read */
293	struct drm_pending_event {	295	struct drm_pending_event {
294	struct drm_event *event;	296	struct drm_event *event;
295	struct list_head link;	297	struct list_head link;
-		298	struct list_head pending_link;
296	struct drm_file *file_priv;	299	struct drm_file *file_priv;
297	pid_t pid; /* pid of requester, no guarantee it's valid by the time	300	pid_t pid; /* pid of requester, no guarantee it's valid by the time
298	we deliver the event, for tracing only */	301	we deliver the event, for tracing only */
299	void (destroy)(struct drm_pending_event event);	302	void (destroy)(struct drm_pending_event event);
300	};	303	};
301		304
302	/* initial implementaton using a linked list - todo hashtab */	305	/* initial implementaton using a linked list - todo hashtab */
303	struct drm_prime_file_private {	306	struct drm_prime_file_private {
304	struct list_head head;	307	struct list_head head;
305	struct mutex lock;	308	struct mutex lock;
306	};	309	};
307		310
308	/** File private data */	311	/** File private data */
309	struct drm_file {	312	struct drm_file {
310	unsigned authenticated :1;	313	unsigned authenticated :1;
311	/* Whether we're master for a minor. Protected by master_mutex */	314	/* Whether we're master for a minor. Protected by master_mutex */
312	unsigned is_master :1;	315	unsigned is_master :1;
313	/* true when the client has asked us to expose stereo 3D mode flags */	316	/* true when the client has asked us to expose stereo 3D mode flags */
314	unsigned stereo_allowed :1;	317	unsigned stereo_allowed :1;
315	/*	318	/*
316	* true if client understands CRTC primary planes and cursor planes	319	* true if client understands CRTC primary planes and cursor planes
317	* in the plane list	320	* in the plane list
318	*/	321	*/
319	unsigned universal_planes:1;	322	unsigned universal_planes:1;
320	/* true if client understands atomic properties */	323	/* true if client understands atomic properties */
321	unsigned atomic:1;	324	unsigned atomic:1;
322	/*	325	/*
323	* This client is allowed to gain master privileges for @master.	326	* This client is allowed to gain master privileges for @master.
324	* Protected by struct drm_device::master_mutex.	327	* Protected by struct drm_device::master_mutex.
325	*/	328	*/
326	unsigned allowed_master:1;	329	unsigned allowed_master:1;
327	struct list_head lhead;	330	struct list_head lhead;
328	struct drm_minor *minor;	331	struct drm_minor *minor;
329	unsigned long lock_count;	332	unsigned long lock_count;
330		333
331	/** Mapping of mm object handles to object pointers. */	334	/** Mapping of mm object handles to object pointers. */
332	struct idr object_idr;	335	struct idr object_idr;
333	/** Lock for synchronization of access to object_idr. */	336	/** Lock for synchronization of access to object_idr. */
334	spinlock_t table_lock;	337	spinlock_t table_lock;
335		338
336	void *driver_priv;	339	void *driver_priv;
337		340
338	struct drm_master master; / master this node is currently associated with	341	struct drm_master master; / master this node is currently associated with
339	N.B. not always minor->master */	342	N.B. not always minor->master */
340	/**	343	/**
341	* fbs - List of framebuffers associated with this file.	344	* fbs - List of framebuffers associated with this file.
342	*	345	*
343	* Protected by fbs_lock. Note that the fbs list holds a reference on	346	* Protected by fbs_lock. Note that the fbs list holds a reference on
344	* the fb object to prevent it from untimely disappearing.	347	* the fb object to prevent it from untimely disappearing.
345	*/	348	*/
346	struct list_head fbs;	349	struct list_head fbs;
347	struct mutex fbs_lock;	350	struct mutex fbs_lock;
348		351
349	/** User-created blob properties; this retains a reference on the	352	/** User-created blob properties; this retains a reference on the
350	* property. */	353	* property. */
351	struct list_head blobs;	354	struct list_head blobs;
352		355
353	wait_queue_head_t event_wait;	356	wait_queue_head_t event_wait;
-		357	struct list_head pending_event_list;
354	struct list_head event_list;	358	struct list_head event_list;
355	int event_space;	359	int event_space;
-		360
-		361	struct mutex event_read_lock;
356	};	362	};
357		363
358	/**	364	/**
359	* Lock data.	365	* Lock data.
360	*/	366	*/
361	struct drm_lock_data {	367	struct drm_lock_data {
362	struct drm_hw_lock hw_lock; /< Hardware lock /	368	struct drm_hw_lock hw_lock; /< Hardware lock /
363	/** Private of lock holder's file (NULL=kernel) */	369	/** Private of lock holder's file (NULL=kernel) */
364	struct drm_file *file_priv;	370	struct drm_file *file_priv;
365	wait_queue_head_t lock_queue; /*< Queue of blocked processes /	371	wait_queue_head_t lock_queue; /*< Queue of blocked processes /
366	unsigned long lock_time; /*< Time of last lock in jiffies /	372	unsigned long lock_time; /*< Time of last lock in jiffies /
367	spinlock_t spinlock;	373	spinlock_t spinlock;
368	uint32_t kernel_waiters;	374	uint32_t kernel_waiters;
369	uint32_t user_waiters;	375	uint32_t user_waiters;
370	int idle_has_lock;	376	int idle_has_lock;
371	};	377	};
372		378
373	/**	379	/**
374	* struct drm_master - drm master structure	380	* struct drm_master - drm master structure
375	*	381	*
376	* @refcount: Refcount for this master object.	382	* @refcount: Refcount for this master object.
377	* @minor: Link back to minor char device we are master for. Immutable.	383	* @minor: Link back to minor char device we are master for. Immutable.
378	* @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.	384	* @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
379	* @unique_len: Length of unique field. Protected by drm_global_mutex.	385	* @unique_len: Length of unique field. Protected by drm_global_mutex.
380	* @magic_map: Map of used authentication tokens. Protected by struct_mutex.	386	* @magic_map: Map of used authentication tokens. Protected by struct_mutex.
381	* @lock: DRI lock information.	387	* @lock: DRI lock information.
382	* @driver_priv: Pointer to driver-private information.	388	* @driver_priv: Pointer to driver-private information.
383	*/	389	*/
384	struct drm_master {	390	struct drm_master {
385	struct kref refcount;	391	struct kref refcount;
386	struct drm_minor *minor;	392	struct drm_minor *minor;
387	char *unique;	393	char *unique;
388	int unique_len;	394	int unique_len;
389	struct idr magic_map;	395	struct idr magic_map;
390	struct drm_lock_data lock;	396	struct drm_lock_data lock;
391	void *driver_priv;	397	void *driver_priv;
392	};	398	};
393		399
394	/* Size of ringbuffer for vblank timestamps. Just double-buffer	400	/* Size of ringbuffer for vblank timestamps. Just double-buffer
395	* in initial implementation.	401	* in initial implementation.
396	*/	402	*/
397	#define DRM_VBLANKTIME_RBSIZE 2	403	#define DRM_VBLANKTIME_RBSIZE 2
398		404
399	/* Flags and return codes for get_vblank_timestamp() driver function. */	405	/* Flags and return codes for get_vblank_timestamp() driver function. */
400	#define DRM_CALLED_FROM_VBLIRQ 1	406	#define DRM_CALLED_FROM_VBLIRQ 1
401	#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)	407	#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
402	#define DRM_VBLANKTIME_IN_VBLANK (1 << 1)	408	#define DRM_VBLANKTIME_IN_VBLANK (1 << 1)
403		409
404	/* get_scanout_position() return flags */	410	/* get_scanout_position() return flags */
405	#define DRM_SCANOUTPOS_VALID (1 << 0)	411	#define DRM_SCANOUTPOS_VALID (1 << 0)
406	#define DRM_SCANOUTPOS_IN_VBLANK (1 << 1)	412	#define DRM_SCANOUTPOS_IN_VBLANK (1 << 1)
407	#define DRM_SCANOUTPOS_ACCURATE (1 << 2)	413	#define DRM_SCANOUTPOS_ACCURATE (1 << 2)
408		414
409	/**	415	/**
410	* DRM driver structure. This structure represent the common code for	416	* DRM driver structure. This structure represent the common code for
411	* a family of cards. There will one drm_device for each card present	417	* a family of cards. There will one drm_device for each card present
412	* in this family	418	* in this family
413	*/	419	*/
414	struct drm_driver {	420	struct drm_driver {
415	int (load) (struct drm_device , unsigned long flags);	421	int (load) (struct drm_device , unsigned long flags);
416	int (open) (struct drm_device , struct drm_file *);	422	int (open) (struct drm_device , struct drm_file *);
417		423
418	/**	424	/**
419	* get_vblank_counter - get raw hardware vblank counter	425	* get_vblank_counter - get raw hardware vblank counter
420	* @dev: DRM device	426	* @dev: DRM device
421	* @pipe: counter to fetch	427	* @pipe: counter to fetch
422	*	428	*
423	* Driver callback for fetching a raw hardware vblank counter for @crtc.	429	* Driver callback for fetching a raw hardware vblank counter for @crtc.
424	* If a device doesn't have a hardware counter, the driver can simply	430	* If a device doesn't have a hardware counter, the driver can simply
425	* return the value of drm_vblank_count. The DRM core will account for	431	* return the value of drm_vblank_count. The DRM core will account for
426	* missed vblank events while interrupts where disabled based on system	432	* missed vblank events while interrupts where disabled based on system
427	* timestamps.	433	* timestamps.
428	*	434	*
429	* Wraparound handling and loss of events due to modesetting is dealt	435	* Wraparound handling and loss of events due to modesetting is dealt
430	* with in the DRM core code.	436	* with in the DRM core code.
431	*	437	*
432	* RETURNS	438	* RETURNS
433	* Raw vblank counter value.	439	* Raw vblank counter value.
434	*/	440	*/
435	u32 (get_vblank_counter) (struct drm_device dev, unsigned int pipe);	441	u32 (get_vblank_counter) (struct drm_device dev, unsigned int pipe);
436		442
437	/**	443	/**
438	* enable_vblank - enable vblank interrupt events	444	* enable_vblank - enable vblank interrupt events
439	* @dev: DRM device	445	* @dev: DRM device
440	* @pipe: which irq to enable	446	* @pipe: which irq to enable
441	*	447	*
442	* Enable vblank interrupts for @crtc. If the device doesn't have	448	* Enable vblank interrupts for @crtc. If the device doesn't have
443	* a hardware vblank counter, this routine should be a no-op, since	449	* a hardware vblank counter, this routine should be a no-op, since
444	* interrupts will have to stay on to keep the count accurate.	450	* interrupts will have to stay on to keep the count accurate.
445	*	451	*
446	* RETURNS	452	* RETURNS
447	* Zero on success, appropriate errno if the given @crtc's vblank	453	* Zero on success, appropriate errno if the given @crtc's vblank
448	* interrupt cannot be enabled.	454	* interrupt cannot be enabled.
449	*/	455	*/
450	int (enable_vblank) (struct drm_device dev, unsigned int pipe);	456	int (enable_vblank) (struct drm_device dev, unsigned int pipe);
451		457
452	/**	458	/**
453	* disable_vblank - disable vblank interrupt events	459	* disable_vblank - disable vblank interrupt events
454	* @dev: DRM device	460	* @dev: DRM device
455	* @pipe: which irq to enable	461	* @pipe: which irq to enable
456	*	462	*
457	* Disable vblank interrupts for @crtc. If the device doesn't have	463	* Disable vblank interrupts for @crtc. If the device doesn't have
458	* a hardware vblank counter, this routine should be a no-op, since	464	* a hardware vblank counter, this routine should be a no-op, since
459	* interrupts will have to stay on to keep the count accurate.	465	* interrupts will have to stay on to keep the count accurate.
460	*/	466	*/
461	void (disable_vblank) (struct drm_device dev, unsigned int pipe);	467	void (disable_vblank) (struct drm_device dev, unsigned int pipe);
462		468
463	/**	469	/**
464	* Called by \c drm_device_is_agp. Typically used to determine if a	470	* Called by \c drm_device_is_agp. Typically used to determine if a
465	* card is really attached to AGP or not.	471	* card is really attached to AGP or not.
466	*	472	*
467	* \param dev DRM device handle	473	* \param dev DRM device handle
468	*	474	*
469	* \returns	475	* \returns
470	* One of three values is returned depending on whether or not the	476	* One of three values is returned depending on whether or not the
471	* card is absolutely \b not AGP (return of 0), absolutely \b is AGP	477	* card is absolutely \b not AGP (return of 0), absolutely \b is AGP
472	* (return of 1), or may or may not be AGP (return of 2).	478	* (return of 1), or may or may not be AGP (return of 2).
473	*/	479	*/
474	int (device_is_agp) (struct drm_device dev);	480	int (device_is_agp) (struct drm_device dev);
475		481
476	/**	482	/**
477	* Called by vblank timestamping code.	483	* Called by vblank timestamping code.
478	*	484	*
479	* Return the current display scanout position from a crtc, and an	485	* Return the current display scanout position from a crtc, and an
480	* optional accurate ktime_get timestamp of when position was measured.	486	* optional accurate ktime_get timestamp of when position was measured.
481	*	487	*
482	* \param dev DRM device.	488	* \param dev DRM device.
483	* \param pipe Id of the crtc to query.	489	* \param pipe Id of the crtc to query.
484	* \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).	490	* \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
485	* \param *vpos Target location for current vertical scanout position.	491	* \param *vpos Target location for current vertical scanout position.
486	* \param *hpos Target location for current horizontal scanout position.	492	* \param *hpos Target location for current horizontal scanout position.
487	* \param *stime Target location for timestamp taken immediately before	493	* \param *stime Target location for timestamp taken immediately before
488	* scanout position query. Can be NULL to skip timestamp.	494	* scanout position query. Can be NULL to skip timestamp.
489	* \param *etime Target location for timestamp taken immediately after	495	* \param *etime Target location for timestamp taken immediately after
490	* scanout position query. Can be NULL to skip timestamp.	496	* scanout position query. Can be NULL to skip timestamp.
491	* \param mode Current display timings.	497	* \param mode Current display timings.

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(root)/drivers/include/drm/drmP.h @ 4393 – Rev 6936 → 7143