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__);				\
})
 
#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
 */
#if DRM_DEBUG_CODE
#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_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 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 event_list;
	int event_space;
};
 
/**
 * 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);
 
				/* Device support (drm_fops.h) */
extern int drm_open(struct inode *inode, struct file *filp);
extern ssize_t drm_read(struct file *filp, char __user *buffer,
			size_t count, loff_t *offset);
extern int drm_release(struct inode *inode, struct file *filp);
extern int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv);
 
				/* Mapping support (drm_vm.h) */
extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
 
/* 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 *fmt, ...);
 
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);
#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);
 
/* returns true if currently okay to sleep */
static __inline__ bool drm_can_sleep(void)
{
	return true;
}
 
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 6336	Rev 6659
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		48
49	#include	49	#include
50	#include	50	#include
51	#include	51	#include
52	#include	52	#include
53		53
54	#include	54	#include
55	#include	55	#include
56		56
57		57
58	#include	58	#include
59	#include	59	#include
60	#include	60	#include
61	#include	61	#include
62	#include	62	#include
63		63
64	#include	64	#include
65	#include	65	#include
66		66
67	#include	67	#include
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		76
77	struct module;	77	struct module;
78		78
79	struct drm_file;	79	struct drm_file;
80	struct drm_device;	80	struct drm_device;
81	struct drm_agp_head;	81	struct drm_agp_head;
82	struct drm_local_map;	82	struct drm_local_map;
83	struct drm_device_dma;	83	struct drm_device_dma;
84	struct drm_dma_handle;	84	struct drm_dma_handle;
85	struct drm_gem_object;	85	struct drm_gem_object;
86		86
87	struct device_node;	87	struct device_node;
88	struct videomode;	88	struct videomode;
89	struct reservation_object;	89	struct reservation_object;
90	struct dma_buf_attachment;	90	struct dma_buf_attachment;
91		91
92	struct inode;	92	struct inode;
93	struct poll_table_struct;	93	struct poll_table_struct;
94	struct sg_table;	94	struct sg_table;
95		95
96	#define KHZ2PICOS(a) (1000000000UL/(a))	96	#define KHZ2PICOS(a) (1000000000UL/(a))
97		97
98	/*	98	/*
99	* 4 debug categories are defined:	99	* 4 debug categories are defined:
100	*	100	*
101	* CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...	101	* CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
102	* This is the category used by the DRM_DEBUG() macro.	102	* This is the category used by the DRM_DEBUG() macro.
103	*	103	*
104	* DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...	104	* DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
105	* This is the category used by the DRM_DEBUG_DRIVER() macro.	105	* This is the category used by the DRM_DEBUG_DRIVER() macro.
106	*	106	*
107	* KMS: used in the modesetting code.	107	* KMS: used in the modesetting code.
108	* This is the category used by the DRM_DEBUG_KMS() macro.	108	* This is the category used by the DRM_DEBUG_KMS() macro.
109	*	109	*
110	* PRIME: used in the prime code.	110	* PRIME: used in the prime code.
111	* This is the category used by the DRM_DEBUG_PRIME() macro.	111	* This is the category used by the DRM_DEBUG_PRIME() macro.
112	*	112	*
113	* ATOMIC: used in the atomic code.	113	* ATOMIC: used in the atomic code.
114	* This is the category used by the DRM_DEBUG_ATOMIC() macro.	114	* This is the category used by the DRM_DEBUG_ATOMIC() macro.
115	*	115	*
116	* VBL: used for verbose debug message in the vblank code	116	* VBL: used for verbose debug message in the vblank code
117	* This is the category used by the DRM_DEBUG_VBL() macro.	117	* This is the category used by the DRM_DEBUG_VBL() macro.
118	*	118	*
119	* Enabling verbose debug messages is done through the drm.debug parameter,	119	* Enabling verbose debug messages is done through the drm.debug parameter,
120	* each category being enabled by a bit.	120	* each category being enabled by a bit.
121	*	121	*
122	* drm.debug=0x1 will enable CORE messages	122	* drm.debug=0x1 will enable CORE messages
123	* drm.debug=0x2 will enable DRIVER messages	123	* drm.debug=0x2 will enable DRIVER messages
124	* drm.debug=0x3 will enable CORE and DRIVER messages	124	* drm.debug=0x3 will enable CORE and DRIVER messages
125	* ...	125	* ...
126	* drm.debug=0x3f will enable all messages	126	* drm.debug=0x3f will enable all messages
127	*	127	*
128	* An interesting feature is that it's possible to enable verbose logging at	128	* An interesting feature is that it's possible to enable verbose logging at
129	* run-time by echoing the debug value in its sysfs node:	129	* run-time by echoing the debug value in its sysfs node:
130	* # echo 0xf > /sys/module/drm/parameters/debug	130	* # echo 0xf > /sys/module/drm/parameters/debug
131	*/	131	*/
132	#define DRM_UT_CORE 0x01	132	#define DRM_UT_CORE 0x01
133	#define DRM_UT_DRIVER 0x02	133	#define DRM_UT_DRIVER 0x02
134	#define DRM_UT_KMS 0x04	134	#define DRM_UT_KMS 0x04
135	#define DRM_UT_PRIME 0x08	135	#define DRM_UT_PRIME 0x08
136	#define DRM_UT_ATOMIC 0x10	136	#define DRM_UT_ATOMIC 0x10
137	#define DRM_UT_VBL 0x20	137	#define DRM_UT_VBL 0x20
138		138
139	extern __printf(2, 3)	139	extern __printf(2, 3)
140	void drm_ut_debug_printk(const char *function_name,	140	void drm_ut_debug_printk(const char *function_name,
141	const char *format, ...);	141	const char *format, ...);
142	extern __printf(1, 2)	142	extern __printf(1, 2)
143	void drm_err(const char *format, ...);	143	void drm_err(const char *format, ...);
144		144
145	/***********************************************************************/	145	/***********************************************************************/
146	/** \name DRM template customization defaults */	146	/** \name DRM template customization defaults */
147	/@{/	147	/@{/
148		148
149	/* driver capabilities and requirements mask */	149	/* driver capabilities and requirements mask */
150	#define DRIVER_USE_AGP 0x1	150	#define DRIVER_USE_AGP 0x1
151	#define DRIVER_PCI_DMA 0x8	151	#define DRIVER_PCI_DMA 0x8
152	#define DRIVER_SG 0x10	152	#define DRIVER_SG 0x10
153	#define DRIVER_HAVE_DMA 0x20	153	#define DRIVER_HAVE_DMA 0x20
154	#define DRIVER_HAVE_IRQ 0x40	154	#define DRIVER_HAVE_IRQ 0x40
155	#define DRIVER_IRQ_SHARED 0x80	155	#define DRIVER_IRQ_SHARED 0x80
156	#define DRIVER_GEM 0x1000	156	#define DRIVER_GEM 0x1000
157	#define DRIVER_MODESET 0x2000	157	#define DRIVER_MODESET 0x2000
158	#define DRIVER_PRIME 0x4000	158	#define DRIVER_PRIME 0x4000
159	#define DRIVER_RENDER 0x8000	159	#define DRIVER_RENDER 0x8000
160	#define DRIVER_ATOMIC 0x10000	160	#define DRIVER_ATOMIC 0x10000
161	#define DRIVER_KMS_LEGACY_CONTEXT 0x20000	161	#define DRIVER_KMS_LEGACY_CONTEXT 0x20000
162		162
163	/***********************************************************************/	163	/***********************************************************************/
164	/** \name Macros to make printk easier */	164	/** \name Macros to make printk easier */
165	/@{/	165	/@{/
166		166
167	/**	167	/**
168	* Error output.	168	* Error output.
169	*	169	*
170	* \param fmt printf() like format string.	170	* \param fmt printf() like format string.
171	* \param arg arguments	171	* \param arg arguments
172	*/	172	*/
173	#define DRM_ERROR(fmt, ...) \	173	#define DRM_ERROR(fmt, ...) \
174	printk("DRM Error" fmt, ##__VA_ARGS__)	174	printk("DRM Error" fmt, ##__VA_ARGS__)
175		175
176	/**	176	/**
177	* Rate limited error output. Like DRM_ERROR() but won't flood the log.	177	* Rate limited error output. Like DRM_ERROR() but won't flood the log.
178	*	178	*
179	* \param fmt printf() like format string.	179	* \param fmt printf() like format string.
180	* \param arg arguments	180	* \param arg arguments
181	*/	181	*/
182	#define DRM_ERROR_RATELIMITED(fmt, ...) \	182	#define DRM_ERROR_RATELIMITED(fmt, ...) \
183	({ \	183	({ \
184	static DEFINE_RATELIMIT_STATE(_rs, \	184	static DEFINE_RATELIMIT_STATE(_rs, \
185	DEFAULT_RATELIMIT_INTERVAL, \	185	DEFAULT_RATELIMIT_INTERVAL, \
186	DEFAULT_RATELIMIT_BURST); \	186	DEFAULT_RATELIMIT_BURST); \
187	\	187	\
188	if (__ratelimit(&_rs)) \	188	if (__ratelimit(&_rs)) \
189	drm_err(fmt, ##__VA_ARGS__); \	189	drm_err(fmt, ##__VA_ARGS__); \
190	})	190	})
191		191
192	#define DRM_INFO(fmt, ...) \	192	#define DRM_INFO(fmt, ...) \
193	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)	193	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
194		194
195	#define DRM_INFO_ONCE(fmt, ...) \	195	#define DRM_INFO_ONCE(fmt, ...) \
196	printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)	196	printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
197		197
198	/**	198	/**
199	* Debug output.	199	* Debug output.
200	*	200	*
201	* \param fmt printf() like format string.	201	* \param fmt printf() like format string.
202	* \param arg arguments	202	* \param arg arguments
203	*/	203	*/
204	#if DRM_DEBUG_CODE	204	#if DRM_DEBUG_CODE
205	#define DRM_DEBUG(fmt, args...) \	205	#define DRM_DEBUG(fmt, args...) \
206	do { \	206	do { \
207	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	207	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
208	} while (0)	208	} while (0)
209		209
210	#define DRM_DEBUG_DRIVER(fmt, args...) \	210	#define DRM_DEBUG_DRIVER(fmt, args...) \
211	do { \	211	do { \
212	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	212	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
213	} while (0)	213	} while (0)
214	#define DRM_DEBUG_KMS(fmt, args...) \	214	#define DRM_DEBUG_KMS(fmt, args...) \
215	do { \	215	do { \
216	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	216	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
217	} while (0)	217	} while (0)
218	#define DRM_DEBUG_PRIME(fmt, args...) \	218	#define DRM_DEBUG_PRIME(fmt, args...) \
219	do { \	219	do { \
220	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	220	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
221	} while (0)	221	} while (0)
222	#define DRM_DEBUG_ATOMIC(fmt, args...) \	222	#define DRM_DEBUG_ATOMIC(fmt, args...) \
223	do { \	223	do { \
224	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	224	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
225	} while (0)	225	} while (0)
226	#define DRM_DEBUG_VBL(fmt, args...) \	226	#define DRM_DEBUG_VBL(fmt, args...) \
227	do { \	227	do { \
228	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	228	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
229	} while (0)	229	} while (0)
230		230
231	#else	231	#else
232	#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)	232	#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
233	#define DRM_DEBUG_KMS(fmt, args...) do { } while (0)	233	#define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
234	#define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)	234	#define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
235	#define DRM_DEBUG(fmt, arg...) do { } while (0)	235	#define DRM_DEBUG(fmt, arg...) do { } while (0)
236	#define DRM_DEBUG_ATOMIC(fmt, args...) do { } while (0)	236	#define DRM_DEBUG_ATOMIC(fmt, args...) do { } while (0)
237	#define DRM_DEBUG_VBL(fmt, args...) do { } while (0)	237	#define DRM_DEBUG_VBL(fmt, args...) do { } while (0)
238	#endif	238	#endif
239	/@}/	239	/@}/
240		240
241	/***********************************************************************/	241	/***********************************************************************/
242	/** \name Internal types and structures */	242	/** \name Internal types and structures */
243	/@{/	243	/@{/
244		244
245	#define DRM_IF_VERSION(maj, min) (maj << 16 \| min)	245	#define DRM_IF_VERSION(maj, min) (maj << 16 \| min)
246		246
247	/**	247	/**
248	* Ioctl function type.	248	* Ioctl function type.
249	*	249	*
250	* \param inode device inode.	250	* \param inode device inode.
251	* \param file_priv DRM file private pointer.	251	* \param file_priv DRM file private pointer.
252	* \param cmd command.	252	* \param cmd command.
253	* \param arg argument.	253	* \param arg argument.
254	*/	254	*/
255	typedef int drm_ioctl_t(struct drm_device dev, void data,	255	typedef int drm_ioctl_t(struct drm_device dev, void data,
256	struct drm_file *file_priv);	256	struct drm_file *file_priv);
257		257
258	typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,	258	typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
259	unsigned long arg);	259	unsigned long arg);
260		260
261	#define DRM_IOCTL_NR(n) _IOC_NR(n)	261	#define DRM_IOCTL_NR(n) _IOC_NR(n)
262	#define DRM_MAJOR 226	262	#define DRM_MAJOR 226
263		263
264	#define DRM_AUTH 0x1	264	#define DRM_AUTH 0x1
265	#define DRM_MASTER 0x2	265	#define DRM_MASTER 0x2
266	#define DRM_ROOT_ONLY 0x4	266	#define DRM_ROOT_ONLY 0x4
267	#define DRM_CONTROL_ALLOW 0x8	267	#define DRM_CONTROL_ALLOW 0x8
268	#define DRM_UNLOCKED 0x10	268	#define DRM_UNLOCKED 0x10
269	#define DRM_RENDER_ALLOW 0x20	269	#define DRM_RENDER_ALLOW 0x20
270		270
271	struct drm_ioctl_desc {	271	struct drm_ioctl_desc {
272	unsigned int cmd;	272	unsigned int cmd;
273	int flags;	273	int flags;
274	drm_ioctl_t *func;	274	drm_ioctl_t *func;
275	const char *name;	275	const char *name;
276	};	276	};
277		277
278	/**	278	/**
279	* Creates a driver or general drm_ioctl_desc array entry for the given	279	* Creates a driver or general drm_ioctl_desc array entry for the given
280	* ioctl, for use by drm_ioctl().	280	* ioctl, for use by drm_ioctl().
281	*/	281	*/
282		282
283	#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \	283	#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
284	[DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = { \	284	[DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = { \
285	.cmd = DRM_IOCTL_##ioctl, \	285	.cmd = DRM_IOCTL_##ioctl, \
286	.func = _func, \	286	.func = _func, \
287	.flags = _flags, \	287	.flags = _flags, \
288	.name = #ioctl \	288	.name = #ioctl \
289	}	289	}
290		290
291	/* Event queued up for userspace to read */	291	/* Event queued up for userspace to read */
292	struct drm_pending_event {	292	struct drm_pending_event {
293	struct drm_event *event;	293	struct drm_event *event;
294	struct list_head link;	294	struct list_head link;
295	struct drm_file *file_priv;	295	struct drm_file *file_priv;
296	pid_t pid; /* pid of requester, no guarantee it's valid by the time	296	pid_t pid; /* pid of requester, no guarantee it's valid by the time
297	we deliver the event, for tracing only */	297	we deliver the event, for tracing only */
298	void (destroy)(struct drm_pending_event event);	298	void (destroy)(struct drm_pending_event event);
299	};	299	};
300		300
301	/* initial implementaton using a linked list - todo hashtab */	301	/* initial implementaton using a linked list - todo hashtab */
302	struct drm_prime_file_private {	302	struct drm_prime_file_private {
303	struct list_head head;	303	struct list_head head;
304	struct mutex lock;	304	struct mutex lock;
305	};	305	};
306		306
307	/** File private data */	307	/** File private data */
308	struct drm_file {	308	struct drm_file {
309	unsigned authenticated :1;	309	unsigned authenticated :1;
310	/* Whether we're master for a minor. Protected by master_mutex */	310	/* Whether we're master for a minor. Protected by master_mutex */
311	unsigned is_master :1;	311	unsigned is_master :1;
312	/* true when the client has asked us to expose stereo 3D mode flags */	312	/* true when the client has asked us to expose stereo 3D mode flags */
313	unsigned stereo_allowed :1;	313	unsigned stereo_allowed :1;
314	/*	314	/*
315	* true if client understands CRTC primary planes and cursor planes	315	* true if client understands CRTC primary planes and cursor planes
316	* in the plane list	316	* in the plane list
317	*/	317	*/
318	unsigned universal_planes:1;	318	unsigned universal_planes:1;
319	/* true if client understands atomic properties */	319	/* true if client understands atomic properties */
320	unsigned atomic:1;	320	unsigned atomic:1;
321	/*	321	/*
322	* This client is allowed to gain master privileges for @master.	322	* This client is allowed to gain master privileges for @master.
323	* Protected by struct drm_device::master_mutex.	323	* Protected by struct drm_device::master_mutex.
324	*/	324	*/
325	unsigned allowed_master:1;	325	unsigned allowed_master:1;
326	struct list_head lhead;	326	struct list_head lhead;
327	struct drm_minor *minor;	327	struct drm_minor *minor;
328	unsigned long lock_count;	328	unsigned long lock_count;
329		329
330	/** Mapping of mm object handles to object pointers. */	330	/** Mapping of mm object handles to object pointers. */
331	struct idr object_idr;	331	struct idr object_idr;
332	/** Lock for synchronization of access to object_idr. */	332	/** Lock for synchronization of access to object_idr. */
333	spinlock_t table_lock;	333	spinlock_t table_lock;
334		334
335	void *driver_priv;	335	void *driver_priv;
336		336
337	struct drm_master master; / master this node is currently associated with	337	struct drm_master master; / master this node is currently associated with
338	N.B. not always minor->master */	338	N.B. not always minor->master */
339	/**	339	/**
340	* fbs - List of framebuffers associated with this file.	340	* fbs - List of framebuffers associated with this file.
341	*	341	*
342	* Protected by fbs_lock. Note that the fbs list holds a reference on	342	* Protected by fbs_lock. Note that the fbs list holds a reference on
343	* the fb object to prevent it from untimely disappearing.	343	* the fb object to prevent it from untimely disappearing.
344	*/	344	*/
345	struct list_head fbs;	345	struct list_head fbs;
346	struct mutex fbs_lock;	346	struct mutex fbs_lock;
347		347
348	/** User-created blob properties; this retains a reference on the	348	/** User-created blob properties; this retains a reference on the
349	* property. */	349	* property. */
350	struct list_head blobs;	350	struct list_head blobs;
351		351
352	wait_queue_head_t event_wait;	352	wait_queue_head_t event_wait;
353	struct list_head event_list;	353	struct list_head event_list;
354	int event_space;	354	int event_space;
355	};	355	};
356		356
357	/**	357	/**
358	* Lock data.	358	* Lock data.
359	*/	359	*/
360	struct drm_lock_data {	360	struct drm_lock_data {
361	struct drm_hw_lock hw_lock; /< Hardware lock /	361	struct drm_hw_lock hw_lock; /< Hardware lock /
362	/** Private of lock holder's file (NULL=kernel) */	362	/** Private of lock holder's file (NULL=kernel) */
363	struct drm_file *file_priv;	363	struct drm_file *file_priv;
364	wait_queue_head_t lock_queue; /*< Queue of blocked processes /	364	wait_queue_head_t lock_queue; /*< Queue of blocked processes /
365	unsigned long lock_time; /*< Time of last lock in jiffies /	365	unsigned long lock_time; /*< Time of last lock in jiffies /
366	spinlock_t spinlock;	366	spinlock_t spinlock;
367	uint32_t kernel_waiters;	367	uint32_t kernel_waiters;
368	uint32_t user_waiters;	368	uint32_t user_waiters;
369	int idle_has_lock;	369	int idle_has_lock;
370	};	370	};
371		371
372	/**	372	/**
373	* struct drm_master - drm master structure	373	* struct drm_master - drm master structure
374	*	374	*
375	* @refcount: Refcount for this master object.	375	* @refcount: Refcount for this master object.
376	* @minor: Link back to minor char device we are master for. Immutable.	376	* @minor: Link back to minor char device we are master for. Immutable.
377	* @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.	377	* @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
378	* @unique_len: Length of unique field. Protected by drm_global_mutex.	378	* @unique_len: Length of unique field. Protected by drm_global_mutex.
379	* @magic_map: Map of used authentication tokens. Protected by struct_mutex.	379	* @magic_map: Map of used authentication tokens. Protected by struct_mutex.
380	* @lock: DRI lock information.	380	* @lock: DRI lock information.
381	* @driver_priv: Pointer to driver-private information.	381	* @driver_priv: Pointer to driver-private information.
382	*/	382	*/
383	struct drm_master {	383	struct drm_master {
384	struct kref refcount;	384	struct kref refcount;
385	struct drm_minor *minor;	385	struct drm_minor *minor;
386	char *unique;	386	char *unique;
387	int unique_len;	387	int unique_len;
388	struct idr magic_map;	388	struct idr magic_map;
389	struct drm_lock_data lock;	389	struct drm_lock_data lock;
390	void *driver_priv;	390	void *driver_priv;
391	};	391	};
392		392
393	/* Size of ringbuffer for vblank timestamps. Just double-buffer	393	/* Size of ringbuffer for vblank timestamps. Just double-buffer
394	* in initial implementation.	394	* in initial implementation.
395	*/	395	*/
396	#define DRM_VBLANKTIME_RBSIZE 2	396	#define DRM_VBLANKTIME_RBSIZE 2
397		397
398	/* Flags and return codes for get_vblank_timestamp() driver function. */	398	/* Flags and return codes for get_vblank_timestamp() driver function. */
399	#define DRM_CALLED_FROM_VBLIRQ 1	399	#define DRM_CALLED_FROM_VBLIRQ 1
400	#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)	400	#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
401	#define DRM_VBLANKTIME_IN_VBLANK (1 << 1)	401	#define DRM_VBLANKTIME_IN_VBLANK (1 << 1)
402		402
403	/* get_scanout_position() return flags */	403	/* get_scanout_position() return flags */
404	#define DRM_SCANOUTPOS_VALID (1 << 0)	404	#define DRM_SCANOUTPOS_VALID (1 << 0)
405	#define DRM_SCANOUTPOS_IN_VBLANK (1 << 1)	405	#define DRM_SCANOUTPOS_IN_VBLANK (1 << 1)
406	#define DRM_SCANOUTPOS_ACCURATE (1 << 2)	406	#define DRM_SCANOUTPOS_ACCURATE (1 << 2)
407		407
408	/**	408	/**
409	* DRM driver structure. This structure represent the common code for	409	* DRM driver structure. This structure represent the common code for
410	* a family of cards. There will one drm_device for each card present	410	* a family of cards. There will one drm_device for each card present
411	* in this family	411	* in this family
412	*/	412	*/
413	struct drm_driver {	413	struct drm_driver {
414	int (load) (struct drm_device , unsigned long flags);	414	int (load) (struct drm_device , unsigned long flags);
415	int (open) (struct drm_device , struct drm_file *);	415	int (open) (struct drm_device , struct drm_file *);
416		416
417	/**	417	/**
418	* get_vblank_counter - get raw hardware vblank counter	418	* get_vblank_counter - get raw hardware vblank counter
419	* @dev: DRM device	419	* @dev: DRM device
420	* @pipe: counter to fetch	420	* @pipe: counter to fetch
421	*	421	*
422	* Driver callback for fetching a raw hardware vblank counter for @crtc.	422	* Driver callback for fetching a raw hardware vblank counter for @crtc.
423	* If a device doesn't have a hardware counter, the driver can simply	423	* If a device doesn't have a hardware counter, the driver can simply
424	* return the value of drm_vblank_count. The DRM core will account for	424	* return the value of drm_vblank_count. The DRM core will account for
425	* missed vblank events while interrupts where disabled based on system	425	* missed vblank events while interrupts where disabled based on system
426	* timestamps.	426	* timestamps.
427	*	427	*
428	* Wraparound handling and loss of events due to modesetting is dealt	428	* Wraparound handling and loss of events due to modesetting is dealt
429	* with in the DRM core code.	429	* with in the DRM core code.
430	*	430	*
431	* RETURNS	431	* RETURNS
432	* Raw vblank counter value.	432	* Raw vblank counter value.
433	*/	433	*/
434	u32 (get_vblank_counter) (struct drm_device dev, unsigned int pipe);	434	u32 (get_vblank_counter) (struct drm_device dev, unsigned int pipe);
435		435
436	/**	436	/**
437	* enable_vblank - enable vblank interrupt events	437	* enable_vblank - enable vblank interrupt events
438	* @dev: DRM device	438	* @dev: DRM device
439	* @pipe: which irq to enable	439	* @pipe: which irq to enable
440	*	440	*
441	* Enable vblank interrupts for @crtc. If the device doesn't have	441	* Enable vblank interrupts for @crtc. If the device doesn't have
442	* a hardware vblank counter, this routine should be a no-op, since	442	* a hardware vblank counter, this routine should be a no-op, since
443	* interrupts will have to stay on to keep the count accurate.	443	* interrupts will have to stay on to keep the count accurate.
444	*	444	*
445	* RETURNS	445	* RETURNS
446	* Zero on success, appropriate errno if the given @crtc's vblank	446	* Zero on success, appropriate errno if the given @crtc's vblank
447	* interrupt cannot be enabled.	447	* interrupt cannot be enabled.
448	*/	448	*/
449	int (enable_vblank) (struct drm_device dev, unsigned int pipe);	449	int (enable_vblank) (struct drm_device dev, unsigned int pipe);
450		450
451	/**	451	/**
452	* disable_vblank - disable vblank interrupt events	452	* disable_vblank - disable vblank interrupt events
453	* @dev: DRM device	453	* @dev: DRM device
454	* @pipe: which irq to enable	454	* @pipe: which irq to enable
455	*	455	*
456	* Disable vblank interrupts for @crtc. If the device doesn't have	456	* Disable vblank interrupts for @crtc. If the device doesn't have
457	* a hardware vblank counter, this routine should be a no-op, since	457	* a hardware vblank counter, this routine should be a no-op, since
458	* interrupts will have to stay on to keep the count accurate.	458	* interrupts will have to stay on to keep the count accurate.
459	*/	459	*/
460	void (disable_vblank) (struct drm_device dev, unsigned int pipe);	460	void (disable_vblank) (struct drm_device dev, unsigned int pipe);
461		461
462	/**	462	/**
463	* Called by \c drm_device_is_agp. Typically used to determine if a	463	* Called by \c drm_device_is_agp. Typically used to determine if a
464	* card is really attached to AGP or not.	464	* card is really attached to AGP or not.
465	*	465	*
466	* \param dev DRM device handle	466	* \param dev DRM device handle
467	*	467	*
468	* \returns	468	* \returns
469	* One of three values is returned depending on whether or not the	469	* One of three values is returned depending on whether or not the
470	* card is absolutely \b not AGP (return of 0), absolutely \b is AGP	470	* card is absolutely \b not AGP (return of 0), absolutely \b is AGP
471	* (return of 1), or may or may not be AGP (return of 2).	471	* (return of 1), or may or may not be AGP (return of 2).
472	*/	472	*/
473	int (device_is_agp) (struct drm_device dev);	473	int (device_is_agp) (struct drm_device dev);
474		474
475	/**	475	/**
476	* Called by vblank timestamping code.	476	* Called by vblank timestamping code.
477	*	477	*
478	* Return the current display scanout position from a crtc, and an	478	* Return the current display scanout position from a crtc, and an
479	* optional accurate ktime_get timestamp of when position was measured.	479	* optional accurate ktime_get timestamp of when position was measured.
480	*	480	*
481	* \param dev DRM device.	481	* \param dev DRM device.
482	* \param pipe Id of the crtc to query.	482	* \param pipe Id of the crtc to query.
483	* \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).	483	* \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
484	* \param *vpos Target location for current vertical scanout position.	484	* \param *vpos Target location for current vertical scanout position.
485	* \param *hpos Target location for current horizontal scanout position.	485	* \param *hpos Target location for current horizontal scanout position.
486	* \param *stime Target location for timestamp taken immediately before	486	* \param *stime Target location for timestamp taken immediately before
487	* scanout position query. Can be NULL to skip timestamp.	487	* scanout position query. Can be NULL to skip timestamp.
488	* \param *etime Target location for timestamp taken immediately after	488	* \param *etime Target location for timestamp taken immediately after
489	* scanout position query. Can be NULL to skip timestamp.	489	* scanout position query. Can be NULL to skip timestamp.
490	* \param mode Current display timings.	490	* \param mode Current display timings.
491	*	491	*
492	* Returns vpos as a positive number while in active scanout area.	492	* Returns vpos as a positive number while in active scanout area.
493	* Returns vpos as a negative number inside vblank, counting the number	493	* Returns vpos as a negative number inside vblank, counting the number
494	* of scanlines to go until end of vblank, e.g., -1 means "one scanline	494	* of scanlines to go until end of vblank, e.g., -1 means "one scanline
495	* until start of active scanout / end of vblank."	495	* until start of active scanout / end of vblank."
496	*	496	*
497	* \return Flags, or'ed together as follows:	497	* \return Flags, or'ed together as follows:
498	*	498	*
499	* DRM_SCANOUTPOS_VALID = Query successful.	499	* DRM_SCANOUTPOS_VALID = Query successful.
500	* DRM_SCANOUTPOS_INVBL = Inside vblank.	500	* DRM_SCANOUTPOS_INVBL = Inside vblank.

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(root)/drivers/include/drm/drmP.h – Rev 6336 → 6659