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/**

 * \file drmP.h

 * Private header for Direct Rendering Manager

 *

 * \author Rickard E. (Rik) Faith 

 * \author Gareth Hughes 

 */

/*

 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.

 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.

 * All rights reserved.

 *

 * 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 

#include 

#include 

//#include 

struct drm_file;

struct drm_device;

//#include "drm_os_linux.h"

//#include "drm_hashtab.h"

//#include "drm_mm.h"

#define DRM_UT_CORE 		0x01

#define DRM_UT_DRIVER		0x02

#define DRM_UT_KMS          0x04

#define DRM_UT_MODE         0x08

#define KHZ2PICOS(a) (1000000000UL/(a))

extern void drm_ut_debug_printk(unsigned int request_level,

				const char *prefix,

				const char *function_name,

				const char *format, ...);

#define DRM_DEBUG_MODE(prefix, fmt, args...)    \

    do {                                        \

        dbgprintf("drm debug: %s" fmt,          \

                     __func__, ##args);         \

    } while (0)

#define DRM_DEBUG(fmt, arg...)     \

    printk("[" DRM_NAME ":%s] " fmt , __func__ , ##arg)

/**

 * This structure defines the drm_mm memory object, which will be used by the

 * DRM for its buffer objects.

 */

struct drm_gem_object {

    /** Reference count of this object */

//    struct kref refcount;

    /** Handle count of this object. Each handle also holds a reference */

//    struct kref handlecount;

    /** Related drm device */

    struct drm_device *dev;

    /** File representing the shmem storage */

//    struct file *filp;

    /* Mapping info for this object */

//    struct drm_map_list map_list;

    /**

     * Size of the object, in bytes.  Immutable over the object's

     * lifetime.

     */

    size_t size;

    /**

     * Global name for this object, starts at 1. 0 means unnamed.

     * Access is covered by the object_name_lock in the related drm_device

     */

    int name;

    /**

     * Memory domains. These monitor which caches contain read/write data

     * related to the object. When transitioning from one set of domains

     * to another, the driver is called to ensure that caches are suitably

     * flushed and invalidated

     */

    uint32_t read_domains;

    uint32_t write_domain;

    /**

     * While validating an exec operation, the

     * new read/write domain values are computed here.

     * They will be transferred to the above values

     * at the point that any cache flushing occurs

     */

    uint32_t pending_read_domains;

    uint32_t pending_write_domain;

    void *driver_private;

};

#if 0

/***********************************************************************/

/** \name DRM template customization defaults */

/*@{*/

/* driver capabilities and requirements mask */

#define DRIVER_USE_AGP     0x1

#define DRIVER_REQUIRE_AGP 0x2

#define DRIVER_USE_MTRR    0x4

#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_IRQ_VBL     0x100

#define DRIVER_DMA_QUEUE   0x200

#define DRIVER_FB_DMA      0x400

#define DRIVER_IRQ_VBL2    0x800

#define DRIVER_GEM         0x1000

#define DRIVER_MODESET     0x2000

/***********************************************************************/

/** \name Begin the DRM... */

/*@{*/

#define DRM_DEBUG_CODE 2	  /**< Include debugging code if > 1, then

				     also include looping detection. */

#define DRM_MAGIC_HASH_ORDER  4  /**< Size of key hash table. Must be power of 2. */

#define DRM_KERNEL_CONTEXT    0	 /**< Change drm_resctx if changed */

#define DRM_RESERVED_CONTEXTS 1	 /**< Change drm_resctx if changed */

#define DRM_LOOPING_LIMIT     5000000

#define DRM_TIME_SLICE	      (HZ/20)  /**< Time slice for GLXContexts */

#define DRM_LOCK_SLICE	      1	/**< Time slice for lock, in jiffies */

#define DRM_FLAG_DEBUG	  0x01

#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)

#define DRM_MAP_HASH_OFFSET 0x10000000

/*@}*/

/***********************************************************************/

/** \name Macros to make printk easier */

/*@{*/

/**

 * Error output.

 *

 * \param fmt printf() like format string.

 * \param arg arguments

 */

#define DRM_ERROR(fmt, arg...) \

	printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)

/**

 * Memory error output.

 *

 * \param area memory area where the error occurred.

 * \param fmt printf() like format string.

 * \param arg arguments

 */

#define DRM_MEM_ERROR(area, fmt, arg...) \

	printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \

	       drm_mem_stats[area].name , ##arg)

#define DRM_INFO(fmt, arg...)  printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)

/**

 * Debug output.

 *

 * \param fmt printf() like format string.

 * \param arg arguments

 */

#if DRM_DEBUG_CODE

#define DRM_DEBUG(fmt, args...)						\

	do {								\

		drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, 		\

					__func__, fmt, ##args);		\

	} while (0)

#define DRM_DEBUG_DRIVER(prefix, fmt, args...)				\

	do {								\

		drm_ut_debug_printk(DRM_UT_DRIVER, prefix,		\

					__func__, fmt, ##args);		\

	} while (0)

#define DRM_DEBUG_KMS(prefix, fmt, args...)				\

	do {								\

		drm_ut_debug_printk(DRM_UT_KMS, prefix, 		\

					 __func__, fmt, ##args);	\

	} while (0)

#define DRM_DEBUG_MODE(prefix, fmt, args...)				\

	do {								\

		drm_ut_debug_printk(DRM_UT_MODE, prefix, 		\

					 __func__, fmt, ##args);	\

	} while (0)

#define DRM_LOG(fmt, args...)						\

	do {								\

		drm_ut_debug_printk(DRM_UT_CORE, NULL,			\

					NULL, fmt, ##args);		\

	} while (0)

#define DRM_LOG_KMS(fmt, args...)					\

	do {								\

		drm_ut_debug_printk(DRM_UT_KMS, NULL,			\

					NULL, fmt, ##args);		\

	} while (0)

#define DRM_LOG_MODE(fmt, args...)					\

	do {								\

		drm_ut_debug_printk(DRM_UT_MODE, NULL,			\

					NULL, fmt, ##args);		\

	} while (0)

#define DRM_LOG_DRIVER(fmt, args...)					\

	do {								\

		drm_ut_debug_printk(DRM_UT_DRIVER, NULL,		\

					NULL, fmt, ##args);		\

	} while (0)

#else

#define DRM_DEBUG_DRIVER(prefix, fmt, args...) do { } while (0)

#define DRM_DEBUG_KMS(prefix, fmt, args...)	do { } while (0)

#define DRM_DEBUG_MODE(prefix, fmt, args...)	do { } while (0)

#define DRM_DEBUG(fmt, arg...)		 do { } while (0)

#define DRM_LOG(fmt, arg...)		do { } while (0)

#define DRM_LOG_KMS(fmt, args...) do { } while (0)

#define DRM_LOG_MODE(fmt, arg...) do { } while (0)

#define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)

#endif

#define DRM_PROC_LIMIT (PAGE_SIZE-80)

#define DRM_PROC_PRINT(fmt, arg...)					\

   len += sprintf(&buf[len], fmt , ##arg);				\

   if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }

#define DRM_PROC_PRINT_RET(ret, fmt, arg...)				\

   len += sprintf(&buf[len], fmt , ##arg);				\

   if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }

/*@}*/

/***********************************************************************/

/** \name Internal types and structures */

/*@{*/

#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)

#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))

#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))

#define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)

#define DRM_IF_VERSION(maj, min) (maj << 16 | min)

/**

 * Get the private SAREA mapping.

 *

 * \param _dev DRM device.

 * \param _ctx context number.

 * \param _map output mapping.

 */

#define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do {	\

	(_map) = (_dev)->context_sareas[_ctx];		\

} while(0)

/**

 * Test that the hardware lock is held by the caller, returning otherwise.

 *

 * \param dev DRM device.

 * \param filp file pointer of the caller.

 */

#define LOCK_TEST_WITH_RETURN( dev, _file_priv )				\

do {										\

	if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) ||	\

	    _file_priv->master->lock.file_priv != _file_priv)	{		\

		DRM_ERROR( "%s called without lock held, held  %d owner %p %p\n",\

			   __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\

			   _file_priv->master->lock.file_priv, _file_priv);	\

		return -EINVAL;							\

	}									\

} while (0)

/**

 * Copy and IOCTL return string to user space

 */

#define DRM_COPY( name, value )						\

	len = strlen( value );						\

	if ( len > name##_len ) len = name##_len;			\

	name##_len = strlen( value );					\

	if ( len && name ) {						\

		if ( copy_to_user( name, value, len ) )			\

			return -EFAULT;					\

	}

/**

 * 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_AUTH	0x1

#define	DRM_MASTER	0x2

#define DRM_ROOT_ONLY	0x4

#define DRM_CONTROL_ALLOW 0x8

struct drm_ioctl_desc {

	unsigned int cmd;

	int flags;

	drm_ioctl_t *func;

};

/**

 * Creates a driver or general drm_ioctl_desc array entry for the given

 * ioctl, for use by drm_ioctl().

 */

#define DRM_IOCTL_DEF(ioctl, _func, _flags) \

	[DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags}

struct drm_magic_entry {

	struct list_head head;

	struct drm_hash_item hash_item;

	struct drm_file *priv;

};

struct drm_vma_entry {

	struct list_head head;

	struct vm_area_struct *vma;

	pid_t pid;

};

/**

 * DMA buffer.

 */

struct drm_buf {

	int idx;		       /**< Index into master buflist */

	int total;		       /**< Buffer size */

	int order;		       /**< log-base-2(total) */

	int used;		       /**< Amount of buffer in use (for DMA) */

	unsigned long offset;	       /**< Byte offset (used internally) */

	void *address;		       /**< Address of buffer */

	unsigned long bus_address;     /**< Bus address of buffer */

	struct drm_buf *next;	       /**< Kernel-only: used for free list */

	__volatile__ int waiting;      /**< On kernel DMA queue */

	__volatile__ int pending;      /**< On hardware DMA queue */

	wait_queue_head_t dma_wait;    /**< Processes waiting */

	struct drm_file *file_priv;    /**< Private of holding file descr */

	int context;		       /**< Kernel queue for this buffer */

	int while_locked;	       /**< Dispatch this buffer while locked */

	enum {

		DRM_LIST_NONE = 0,

		DRM_LIST_FREE = 1,

		DRM_LIST_WAIT = 2,

		DRM_LIST_PEND = 3,

		DRM_LIST_PRIO = 4,

		DRM_LIST_RECLAIM = 5

	} list;			       /**< Which list we're on */

	int dev_priv_size;		 /**< Size of buffer private storage */

	void *dev_private;		 /**< Per-buffer private storage */

};

/** bufs is one longer than it has to be */

struct drm_waitlist {

	int count;			/**< Number of possible buffers */

	struct drm_buf **bufs;		/**< List of pointers to buffers */

	struct drm_buf **rp;			/**< Read pointer */

	struct drm_buf **wp;			/**< Write pointer */

	struct drm_buf **end;		/**< End pointer */

	spinlock_t read_lock;

	spinlock_t write_lock;

};

struct drm_freelist {

	int initialized;	       /**< Freelist in use */

	atomic_t count;		       /**< Number of free buffers */

	struct drm_buf *next;	       /**< End pointer */

	wait_queue_head_t waiting;     /**< Processes waiting on free bufs */

	int low_mark;		       /**< Low water mark */

	int high_mark;		       /**< High water mark */

	atomic_t wfh;		       /**< If waiting for high mark */

	spinlock_t lock;

};

typedef struct drm_dma_handle {

	dma_addr_t busaddr;

	void *vaddr;

	size_t size;

} drm_dma_handle_t;

/**

 * Buffer entry.  There is one of this for each buffer size order.

 */

struct drm_buf_entry {

	int buf_size;			/**< size */

	int buf_count;			/**< number of buffers */

	struct drm_buf *buflist;		/**< buffer list */

	int seg_count;

	int page_order;

	struct drm_dma_handle **seglist;

	struct drm_freelist freelist;

};

/** File private data */

struct drm_file {

	int authenticated;

	pid_t pid;

	uid_t uid;

	drm_magic_t magic;

	unsigned long ioctl_count;

	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;

	struct file *filp;

	void *driver_priv;

	int is_master; /* this file private is a master for a minor */

	struct drm_master *master; /* master this node is currently associated with

				      N.B. not always minor->master */

	struct list_head fbs;

};

/** Wait queue */

struct drm_queue {

	atomic_t use_count;		/**< Outstanding uses (+1) */

	atomic_t finalization;		/**< Finalization in progress */

	atomic_t block_count;		/**< Count of processes waiting */

	atomic_t block_read;		/**< Queue blocked for reads */

	wait_queue_head_t read_queue;	/**< Processes waiting on block_read */

	atomic_t block_write;		/**< Queue blocked for writes */

	wait_queue_head_t write_queue;	/**< Processes waiting on block_write */

	atomic_t total_queued;		/**< Total queued statistic */

	atomic_t total_flushed;		/**< Total flushes statistic */

	atomic_t total_locks;		/**< Total locks statistics */

	enum drm_ctx_flags flags;	/**< Context preserving and 2D-only */

	struct drm_waitlist waitlist;	/**< Pending buffers */

	wait_queue_head_t flush_queue;	/**< Processes waiting until flush */

};

/**

 * 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;

};

/**

 * DMA data.

 */

struct drm_device_dma {

	struct drm_buf_entry bufs[DRM_MAX_ORDER + 1];	/**< buffers, grouped by their size order */

	int buf_count;			/**< total number of buffers */

	struct drm_buf **buflist;		/**< Vector of pointers into drm_device_dma::bufs */

	int seg_count;

	int page_count;			/**< number of pages */

	unsigned long *pagelist;	/**< page list */

	unsigned long byte_count;

	enum {

		_DRM_DMA_USE_AGP = 0x01,

		_DRM_DMA_USE_SG = 0x02,

		_DRM_DMA_USE_FB = 0x04,

		_DRM_DMA_USE_PCI_RO = 0x08

	} flags;

};

/**

 * AGP memory entry.  Stored as a doubly linked list.

 */

struct drm_agp_mem {

	unsigned long handle;		/**< handle */

	DRM_AGP_MEM *memory;

	unsigned long bound;		/**< address */

	int pages;

	struct list_head head;

};

/**

 * AGP data.

 *

 * \sa drm_agp_init() and drm_device::agp.

 */

struct drm_agp_head {

	DRM_AGP_KERN agp_info;		/**< AGP device information */

	struct list_head memory;

	unsigned long mode;		/**< AGP mode */

	struct agp_bridge_data *bridge;

	int enabled;			/**< whether the AGP bus as been enabled */

	int acquired;			/**< whether the AGP device has been acquired */

	unsigned long base;

	int agp_mtrr;

	int cant_use_aperture;

	unsigned long page_mask;

};

/**

 * Scatter-gather memory.

 */

struct drm_sg_mem {

	unsigned long handle;

	void *virtual;

	int pages;

	struct page **pagelist;

	dma_addr_t *busaddr;

};

struct drm_sigdata {

	int context;

	struct drm_hw_lock *lock;

};

/**

 * Kernel side of a mapping

 */

struct drm_local_map {

	resource_size_t offset;	 /**< Requested physical address (0 for SAREA)*/

	unsigned long size;	 /**< Requested physical size (bytes) */

	enum drm_map_type type;	 /**< Type of memory to map */

	enum drm_map_flags flags;	 /**< Flags */

	void *handle;		 /**< User-space: "Handle" to pass to mmap() */

				 /**< Kernel-space: kernel-virtual address */

	int mtrr;		 /**< MTRR slot used */

};

typedef struct drm_local_map drm_local_map_t;

/**

 * Mappings list

 */

struct drm_map_list {

	struct list_head head;		/**< list head */

	struct drm_hash_item hash;

	struct drm_local_map *map;	/**< mapping */

	uint64_t user_token;

	struct drm_master *master;

	struct drm_mm_node *file_offset_node;	/**< fake offset */

};

/**

 * Context handle list

 */

struct drm_ctx_list {

	struct list_head head;		/**< list head */

	drm_context_t handle;		/**< context handle */

	struct drm_file *tag;		/**< associated fd private data */

};

/* location of GART table */

#define DRM_ATI_GART_MAIN 1

#define DRM_ATI_GART_FB   2

#define DRM_ATI_GART_PCI 1

#define DRM_ATI_GART_PCIE 2

#define DRM_ATI_GART_IGP 3

struct drm_ati_pcigart_info {

	int gart_table_location;

	int gart_reg_if;

	void *addr;

	dma_addr_t bus_addr;

	dma_addr_t table_mask;

	struct drm_dma_handle *table_handle;

	struct drm_local_map mapping;

	int table_size;

};

/**

 * GEM specific mm private for tracking GEM objects

 */

struct drm_gem_mm {

	struct drm_mm offset_manager;	/**< Offset mgmt for buffer objects */

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

};

/**

 * This structure defines the drm_mm memory object, which will be used by the

 * DRM for its buffer objects.

 */

struct drm_gem_object {

	/** Reference count of this object */

	struct kref refcount;

	/** Handle count of this object. Each handle also holds a reference */

	struct kref handlecount;

	/** Related drm device */

	struct drm_device *dev;

	/** File representing the shmem storage */

	struct file *filp;

	/* Mapping info for this object */

	struct drm_map_list map_list;

	/**

	 * Size of the object, in bytes.  Immutable over the object's

	 * lifetime.

	 */

	size_t size;

	/**

	 * Global name for this object, starts at 1. 0 means unnamed.

	 * Access is covered by the object_name_lock in the related drm_device

	 */

	int name;

	/**

	 * Memory domains. These monitor which caches contain read/write data

	 * related to the object. When transitioning from one set of domains

	 * to another, the driver is called to ensure that caches are suitably

	 * flushed and invalidated

	 */

	uint32_t read_domains;

	uint32_t write_domain;

	/**

	 * While validating an exec operation, the

	 * new read/write domain values are computed here.

	 * They will be transferred to the above values

	 * at the point that any cache flushing occurs

	 */

	uint32_t pending_read_domains;

	uint32_t pending_write_domain;

	void *driver_private;

};

#include "drm_crtc.h"

/* per-master structure */

struct drm_master {

	struct kref refcount; /* refcount for this master */

	struct list_head head; /**< each minor contains a list of masters */

	struct drm_minor *minor; /**< link back to minor we are a master for */

	char *unique;			/**< Unique identifier: e.g., busid */

	int unique_len;			/**< Length of unique field */

	int unique_size;		/**< amount allocated */

	int blocked;			/**< Blocked due to VC switch? */

	/** \name Authentication */

	/*@{ */

	struct drm_open_hash magiclist;

	struct list_head magicfree;

	/*@} */

	struct drm_lock_data lock;	/**< Information on hardware lock */

	void *driver_priv; /**< Private structure for driver to use */

};

/**

 * 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 (*firstopen) (struct drm_device *);

	int (*open) (struct drm_device *, struct drm_file *);

	void (*preclose) (struct drm_device *, struct drm_file *file_priv);

	void (*postclose) (struct drm_device *, struct drm_file *);

	void (*lastclose) (struct drm_device *);

	int (*unload) (struct drm_device *);

	int (*suspend) (struct drm_device *, pm_message_t state);

	int (*resume) (struct drm_device *);

	int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);

	void (*dma_ready) (struct drm_device *);

	int (*dma_quiescent) (struct drm_device *);

	int (*context_ctor) (struct drm_device *dev, int context);

	int (*context_dtor) (struct drm_device *dev, int context);

	int (*kernel_context_switch) (struct drm_device *dev, int old,

				      int new);

	void (*kernel_context_switch_unlock) (struct drm_device *dev);

	/**

	 * get_vblank_counter - get raw hardware vblank counter

	 * @dev: DRM device

	 * @crtc: 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 and

	 * make the enable_vblank() and disable_vblank() hooks into no-ops,

	 * leaving interrupts enabled at all times.

	 *

	 * 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, int crtc);

	/**

	 * enable_vblank - enable vblank interrupt events

	 * @dev: DRM device

	 * @crtc: 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, int crtc);

	/**

	 * disable_vblank - disable vblank interrupt events

	 * @dev: DRM device

	 * @crtc: 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, int crtc);

	/**

	 * 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);

	/* these have to be filled in */

	irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);

	void (*irq_preinstall) (struct drm_device *dev);

	int (*irq_postinstall) (struct drm_device *dev);

	void (*irq_uninstall) (struct drm_device *dev);

	void (*reclaim_buffers) (struct drm_device *dev,

				 struct drm_file * file_priv);

	void (*reclaim_buffers_locked) (struct drm_device *dev,

					struct drm_file *file_priv);

	void (*reclaim_buffers_idlelocked) (struct drm_device *dev,

					    struct drm_file *file_priv);

	resource_size_t (*get_map_ofs) (struct drm_local_map * map);

	resource_size_t (*get_reg_ofs) (struct drm_device *dev);

	void (*set_version) (struct drm_device *dev,

			     struct drm_set_version *sv);

	/* Master routines */

	int (*master_create)(struct drm_device *dev, struct drm_master *master);

	void (*master_destroy)(struct drm_device *dev, struct drm_master *master);

	int (*proc_init)(struct drm_minor *minor);

	void (*proc_cleanup)(struct drm_minor *minor);

	int (*debugfs_init)(struct drm_minor *minor);

	void (*debugfs_cleanup)(struct drm_minor *minor);

	/**

	 * Driver-specific constructor for drm_gem_objects, to set up

	 * obj->driver_private.

	 *

	 * Returns 0 on success.

	 */

	int (*gem_init_object) (struct drm_gem_object *obj);

	void (*gem_free_object) (struct drm_gem_object *obj);

	/* Driver private ops for this object */

	struct vm_operations_struct *gem_vm_ops;

	int major;

	int minor;

	int patchlevel;

	char *name;

	char *desc;

	char *date;

	u32 driver_features;

	int dev_priv_size;

	struct drm_ioctl_desc *ioctls;

	int num_ioctls;

	struct file_operations fops;

	struct pci_driver pci_driver;

	/* List of devices hanging off this driver */

	struct list_head device_list;

};

#define DRM_MINOR_UNASSIGNED 0

#define DRM_MINOR_LEGACY 1

#define DRM_MINOR_CONTROL 2

#define DRM_MINOR_RENDER 3

/**

 * debugfs node list. This structure represents a debugfs file to

 * be created by the drm core

 */

struct drm_debugfs_list {

	const char *name; /** file name */

	int (*show)(struct seq_file*, void*); /** show callback */

	u32 driver_features; /**< Required driver features for this entry */

};

/**

 * debugfs node structure. This structure represents a debugfs file.

 */

struct drm_debugfs_node {

	struct list_head list;

	struct drm_minor *minor;

	struct drm_debugfs_list *debugfs_ent;

	struct dentry *dent;

};

/**

 * 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;

	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 */

	dev_t device;			/**< Device number for mknod */

	struct device kdev;		/**< Linux device */

	struct drm_device *dev;

	struct proc_dir_entry *proc_root;  /**< proc directory entry */

	struct drm_info_node proc_nodes;

	struct dentry *debugfs_root;

	struct drm_info_node debugfs_nodes;

	struct drm_master *master; /* currently active master for this node */

	struct list_head master_list;

	struct drm_mode_group mode_group;

};

#endif

/**

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

 * may contain multiple heads.

 */

struct drm_device {

	struct list_head driver_item;	/**< list of devices per driver */

	char *devname;			/**< For /proc/interrupts */

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

	/** \name Locks */

	/*@{ */

//   spinlock_t count_lock;      /**< For inuse, drm_device::open_count, drm_device::buf_use */

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

	/*@} */

	/** \name Usage Counters */

	/*@{ */

	int open_count;			/**< Outstanding files open */

//   atomic_t ioctl_count;       /**< Outstanding IOCTLs pending */

//   atomic_t vma_count;     /**< Outstanding vma areas open */

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

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

	/*@} */

	/** \name Performance counters */

	/*@{ */

	unsigned long counters;

//   enum drm_stat_type types[15];

//   atomic_t counts[15];

	/*@} */

	struct list_head filelist;

	/** \name Memory management */

	/*@{ */

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

	int map_count;			/**< Number of mappable regions */

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

	/** \name Context handle management */

	/*@{ */

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

	int ctx_count;			/**< Number of context handles */

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

//   struct idr ctx_idr;

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

	/*@} */

	/** \name DMA queues (contexts) */

	/*@{ */

	int queue_count;		/**< Number of active DMA queues */

	int queue_reserved;		  /**< Number of reserved DMA queues */

	int queue_slots;		/**< Actual length of queuelist */

//   struct drm_queue **queuelist;   /**< Vector of pointers to DMA queues */

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

	/*@} */

	/** \name Context support */

	/*@{ */

	int irq_enabled;		/**< True if irq handler is enabled */

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

	__volatile__ long interrupt_flag; /**< Interruption handler flag */

	__volatile__ long dma_flag;	/**< DMA dispatch flag */

//   struct timer_list timer;    /**< Timer for delaying ctx switch */

//   wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */

	int last_checked;		/**< Last context checked for DMA */

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

	unsigned long last_switch;	/**< jiffies at last context switch */

	/*@} */

//   struct work_struct work;

	/** \name VBLANK IRQ support */

	/*@{ */

	/*

	 * 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.

	 */

	int vblank_disable_allowed;

//   wait_queue_head_t *vbl_queue;   /**< VBLANK wait queue */

//   atomic_t *_vblank_count;        /**< number of VBLANK interrupts (driver must alloc the right number of counters) */

//   spinlock_t vbl_lock;

//   atomic_t *vblank_refcount;      /* number of users of vblank interruptsper crtc */

	u32 *last_vblank;               /* protected by dev->vbl_lock, used */

					/* for wraparound handling */

	int *vblank_enabled;            /* so we don't call enable more than

					   once per disable */

	int *vblank_inmodeset;          /* Display driver is setting mode */

	u32 *last_vblank_wait;		/* Last vblank seqno waited per CRTC */

//   struct timer_list vblank_disable_timer;

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

	/*@} */

//   cycles_t ctx_start;

//   cycles_t lck_start;

//   struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */

//   wait_queue_head_t buf_readers;  /**< Processes waiting to read */

//   wait_queue_head_t buf_writers;  /**< Processes waiting to ctx switch */

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

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

	int pci_vendor;			/**< PCI vendor id */

	int pci_device;			/**< PCI device id */

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

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

	void *dev_private;		/**< device private data */

	void *mm_private;

//   struct address_space *dev_mapping;

//   struct drm_sigdata sigdata;    /**< For block_all_signals */

//   sigset_t sigmask;

//   struct drm_driver *driver;

//   struct drm_local_map *agp_buffer_map;

//   unsigned int agp_buffer_token;

//   struct drm_minor *control;      /**< Control node for card */

//   struct drm_minor *primary;      /**< render type primary screen head */

	/** \name Drawable information */

	/*@{ */

//   spinlock_t drw_lock;

//   struct idr drw_idr;

	/*@} */

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

	/** \name GEM information */

	/*@{ */

//   spinlock_t object_name_lock;

//   struct idr object_name_idr;

//   atomic_t object_count;

//   atomic_t object_memory;

//   atomic_t pin_count;

//   atomic_t pin_memory;

//   atomic_t gtt_count;

//   atomic_t gtt_memory;

//   uint32_t gtt_total;

	uint32_t invalidate_domains;    /* domains pending invalidation */

	uint32_t flush_domains;         /* domains pending flush */

	/*@} */

};

#if 0

static inline int drm_dev_to_irq(struct drm_device *dev)

{

	return dev->pdev->irq;

}

static __inline__ int drm_core_check_feature(struct drm_device *dev,

					     int feature)

{

	return ((dev->driver->driver_features & feature) ? 1 : 0);

}

#ifdef __alpha__

#define drm_get_pci_domain(dev) dev->hose->index

#else

#define drm_get_pci_domain(dev) 0

#endif

#if __OS_HAS_AGP

static inline int drm_core_has_AGP(struct drm_device *dev)

{

	return drm_core_check_feature(dev, DRIVER_USE_AGP);

}

#else

#define drm_core_has_AGP(dev) (0)

#endif

#if __OS_HAS_MTRR

static inline int drm_core_has_MTRR(struct drm_device *dev)

{

	return drm_core_check_feature(dev, DRIVER_USE_MTRR);

}

#define DRM_MTRR_WC		MTRR_TYPE_WRCOMB

static inline int drm_mtrr_add(unsigned long offset, unsigned long size,

			       unsigned int flags)

{

	return mtrr_add(offset, size, flags, 1);

}

static inline int drm_mtrr_del(int handle, unsigned long offset,

			       unsigned long size, unsigned int flags)

{

	return mtrr_del(handle, offset, size);

}

#else

#define drm_core_has_MTRR(dev) (0)

#define DRM_MTRR_WC		0

static inline int drm_mtrr_add(unsigned long offset, unsigned long size,

			       unsigned int flags)

{

	return 0;

}

static inline int drm_mtrr_del(int handle, unsigned long offset,

			       unsigned long size, unsigned int flags)

{

	return 0;