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


/**
 * \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.
 * Copyright (c) 2009-2010, Code Aurora Forum.
 * 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_
 
#define iowrite32(v, addr)      writel((v), (addr))
 
#ifdef __KERNEL__
#ifdef __alpha__
/* add include of current.h so that "current" is defined
 * before static inline funcs in wait.h. Doing this so we
 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
#include 
#endif				/* __alpha__ */
 
#include 
 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
 
#include 
#include 
 
#include 
//#include 
#include 
#include 
#include 
#include 
 
#include 
#include 
//#include 
#include 
 
//#include 
//#include 
//#include 
//#include 
 
#include 
#include 
 
 
#include 
#include 
 
#include 
 
#define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
 
struct module;
 
struct drm_file;
struct drm_device;
 
struct device_node;
struct videomode;
struct reservation_object;
 
struct inode;
struct poll_table_struct;
struct drm_lock_data;
 
struct sg_table;
struct dma_buf;
 
//#include 
#include 
#include 
 
#define KHZ2PICOS(a) (1000000000UL/(a))
 
/* 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_INVBL             (1 << 1)
 
 
/* get_scanout_position() return flags */
#define DRM_SCANOUTPOS_VALID        (1 << 0)
#define DRM_SCANOUTPOS_INVBL        (1 << 1)
#define DRM_SCANOUTPOS_ACCURATE     (1 << 2)
 
/*
 * 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.
 *
 * 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=0xf 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
 
extern __printf(2, 3)
void drm_ut_debug_printk(const char *function_name,
				const char *format, ...);
extern __printf(2, 3)
int drm_err(const char *func, 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_BUS_PCI 0x1
#define DRIVER_BUS_PLATFORM 0x2
#define DRIVER_BUS_USB 0x3
#define DRIVER_BUS_HOST1X 0x4
 
/***********************************************************************/
/** \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_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, ...)				\
	drm_err(__func__, 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(__func__, 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)
#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)
#endif
 
/*@}*/
 
/***********************************************************************/
/** \name Internal types and structures */
/*@{*/
 
#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
 
#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 
/**
 * 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)
 
/**
 * 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;
	unsigned int cmd_drv;
	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)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
 
#if 0
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 */
	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;
};
#endif
 
 
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;
 
	int low_mark;			/**< Low water mark */
	int high_mark;			/**< High water mark */
};
 
/* 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;
	struct list_head lhead;
	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;
 
	wait_queue_head_t event_wait;
	struct list_head event_list;
	int event_space;
};
 
#if 0
/**
 * 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 */
	struct agp_memory *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 {
	struct agp_kern_info 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;
};
 
#endif
 
/**
 * 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;
};
 
/* 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;
};
 
/**
 * 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 - gem file_priv handle count of this object
	 *
	 * Each handle also holds a reference. Note that when the handle_count
	 * drops to 0 any global names (e.g. the id in the flink namespace) will
	 * be cleared.
	 *
	 * Protected by dev->object_name_lock.
	 * */
	unsigned handle_count;
 
	/** Related drm device */
	struct drm_device *dev;
 
	/** File representing the shmem storage */
	struct file *filp;
 
	/* Mapping info for this object */
	struct drm_vma_offset_node vma_node;
 
	/**
	 * 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;
 
	/**
	 * dma_buf - dma buf associated with this GEM object
	 *
	 * Pointer to the dma-buf associated with this gem object (either
	 * through importing or exporting). We break the resulting reference
	 * loop when the last gem handle for this object is released.
	 *
	 * Protected by obj->object_name_lock
	 */
	struct dma_buf *dma_buf;
 
};
 
#include 
 
/**
 * 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.
 * @unique_size: Amount allocated. Protected by drm_global_mutex.
 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
 * @magicfree: List 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;
	int unique_size;
//	struct drm_open_hash magiclist;
//	struct list_head magicfree;
//	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_INVBL             (1 << 1)
 
/* get_scanout_position() return flags */
#define DRM_SCANOUTPOS_VALID        (1 << 0)
#define DRM_SCANOUTPOS_INVBL        (1 << 1)
#define DRM_SCANOUTPOS_ACCURATE     (1 << 2)
 
struct drm_bus {
	int (*set_busid)(struct drm_device *dev, struct drm_master *master);
};
 
/**
 * 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
	 * @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. 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, 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 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 crtc 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.
	 *
	 * 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, int crtc,
				     unsigned int flags,
                     int *vpos, int *hpos, void *stime,
                     void *etime);
 
	/**
	 * 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 crtc 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, int crtc,
				     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_mode_group mode_group;
};
 
 
 
/**
 * 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 */
 
	struct device *dev;		/**< Device structure of bus-device */
	struct drm_driver *driver;	/**< DRM driver managing the device */
	void *dev_private;		/**< DRM driver private data */
	struct drm_minor *primary;		/**< Primary node */
	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 */
	/*@{ */
	bool irq_enabled;		/**< True if irq handler is enabled */
	int irq;
 
	__volatile__ long context_flag;	/**< Context swapping flag */
	int last_context;		/**< Last current context */
	/*@} */
 
	/** \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.
	 */
	bool vblank_disable_allowed;
 
	/* 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 */
 
	unsigned int num_crtcs;                  /**< Number of CRTCs on this device */
 
 
        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 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 int drm_lastclose(struct drm_device *dev);
extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
 
				/* Device support (drm_fops.h) */
extern struct mutex drm_global_mutex;
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);
 
				/* Mapping support (drm_vm.h) */
extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
extern void drm_vm_open_locked(struct drm_device *dev, struct vm_area_struct *vma);
extern void drm_vm_close_locked(struct drm_device *dev, struct vm_area_struct *vma);
extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
 
				/* Memory management support (drm_memory.h) */
#include 
 
 
				/* Misc. IOCTL support (drm_ioctl.h) */
extern int drm_irq_by_busid(struct drm_device *dev, void *data,
			    struct drm_file *file_priv);
extern int drm_getunique(struct drm_device *dev, void *data,
			 struct drm_file *file_priv);
extern int drm_setunique(struct drm_device *dev, void *data,
			 struct drm_file *file_priv);
extern int drm_getmap(struct drm_device *dev, void *data,
		      struct drm_file *file_priv);
extern int drm_getclient(struct drm_device *dev, void *data,
			 struct drm_file *file_priv);
extern int drm_getstats(struct drm_device *dev, void *data,
			struct drm_file *file_priv);
extern int drm_getcap(struct drm_device *dev, void *data,
		      struct drm_file *file_priv);
extern int drm_setclientcap(struct drm_device *dev, void *data,
			    struct drm_file *file_priv);
extern int drm_setversion(struct drm_device *dev, void *data,
			  struct drm_file *file_priv);
extern int drm_noop(struct drm_device *dev, void *data,
		    struct drm_file *file_priv);
 
				/* Authentication IOCTL support (drm_auth.h) */
extern int drm_getmagic(struct drm_device *dev, void *data,
			struct drm_file *file_priv);
extern int drm_authmagic(struct drm_device *dev, void *data,
			 struct drm_file *file_priv);
extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic);
 
/* 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);
 
				/* Locking IOCTL support (drm_lock.h) */
extern int drm_lock(struct drm_device *dev, void *data,
		    struct drm_file *file_priv);
extern int drm_unlock(struct drm_device *dev, void *data,
		      struct drm_file *file_priv);
extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
extern void drm_idlelock_take(struct drm_lock_data *lock_data);
extern void drm_idlelock_release(struct drm_lock_data *lock_data);
 
/*
 * These are exported to drivers so that they can implement fencing using
 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
 */
 
extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
 
				/* Buffer management support (drm_bufs.h) */
extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
		      unsigned int size, enum drm_map_type type,
		      enum drm_map_flags flags, struct drm_local_map **map_ptr);
extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
			    struct drm_file *file_priv);
extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
			   struct drm_file *file_priv);
extern int drm_addbufs(struct drm_device *dev, void *data,
		       struct drm_file *file_priv);
extern int drm_infobufs(struct drm_device *dev, void *data,
			struct drm_file *file_priv);
extern int drm_markbufs(struct drm_device *dev, void *data,
			struct drm_file *file_priv);
extern int drm_freebufs(struct drm_device *dev, void *data,
			struct drm_file *file_priv);
extern int drm_mapbufs(struct drm_device *dev, void *data,
		       struct drm_file *file_priv);
extern int drm_dma_ioctl(struct drm_device *dev, void *data,
			 struct drm_file *file_priv);
 
				/* DMA support (drm_dma.h) */
extern int drm_legacy_dma_setup(struct drm_device *dev);
extern void drm_legacy_dma_takedown(struct drm_device *dev);
extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
extern void drm_core_reclaim_buffers(struct drm_device *dev,
				     struct drm_file *filp);
 
				/* IRQ support (drm_irq.h) */
extern int drm_control(struct drm_device *dev, void *data,
		       struct drm_file *file_priv);
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, 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, int crtc);
extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
				     struct timeval *vblanktime);
extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
				     struct drm_pending_vblank_event *e);
extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
extern int drm_vblank_get(struct drm_device *dev, int crtc);
extern void drm_vblank_put(struct drm_device *dev, int crtc);
extern int drm_crtc_vblank_get(struct drm_crtc *crtc);
extern void drm_crtc_vblank_put(struct drm_crtc *crtc);
extern void drm_vblank_off(struct drm_device *dev, int crtc);
extern void drm_vblank_on(struct drm_device *dev, int crtc);
extern void drm_crtc_vblank_off(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_get_last_vbltimestamp(struct drm_device *dev, int crtc,
				     struct timeval *tvblank, unsigned flags);
extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
						 int crtc, int *max_error,
						 struct timeval *vblank_time,
						 unsigned flags,
						 const struct drm_crtc *refcrtc,
						 const struct drm_display_mode *mode);
extern void drm_calc_timestamping_constants(struct drm_crtc *crtc,
					    const struct drm_display_mode *mode);
 
 
/* Modesetting support */
extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
extern int drm_modeset_ctl(struct drm_device *dev, void *data,
			   struct drm_file *file_priv);
 
				/* AGP/GART support (drm_agpsupport.h) */
 
				/* Stub support (drm_stub.h) */
extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
			       struct drm_file *file_priv);
extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
				struct drm_file *file_priv);
struct drm_master *drm_master_create(struct drm_minor *minor);
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;
 
#if 0
extern unsigned int drm_vblank_offdelay;
extern unsigned int drm_timestamp_precision;
extern unsigned int drm_timestamp_monotonic;
 
extern struct class *drm_class;
 
extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
#endif
				/* Debugfs support */
#if defined(CONFIG_DEBUG_FS)
extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
			    struct dentry *root);
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);
extern int drm_debugfs_cleanup(struct drm_minor *minor);
extern int drm_debugfs_connector_add(struct drm_connector *connector);
extern void drm_debugfs_connector_remove(struct drm_connector *connector);
#else
static inline int drm_debugfs_init(struct drm_minor *minor, int minor_id,
				   struct dentry *root)
{
	return 0;
}
 
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;
}
 
static inline int drm_debugfs_cleanup(struct drm_minor *minor)
{
	return 0;
}
 
static inline int drm_debugfs_connector_add(struct drm_connector *connector)
{
	return 0;
}
static inline void drm_debugfs_connector_remove(struct drm_connector *connector)
{
}
 
#endif
 
				/* Info file support */
extern int drm_name_info(struct seq_file *m, void *data);
extern int drm_vm_info(struct seq_file *m, void *data);
extern int drm_bufs_info(struct seq_file *m, void *data);
extern int drm_vblank_info(struct seq_file *m, void *data);
extern int drm_clients_info(struct seq_file *m, void* data);
extern int drm_gem_name_info(struct seq_file *m, void *data);
 
#if DRM_DEBUG_CODE
extern int drm_vma_info(struct seq_file *m, void *data);
#endif
 
				/* Scatter Gather Support (drm_scatter.h) */
extern void drm_legacy_sg_cleanup(struct drm_device *dev);
extern int drm_sg_alloc(struct drm_device *dev, void *data,
			struct drm_file *file_priv);
extern int drm_sg_free(struct drm_device *dev, void *data,
		       struct drm_file *file_priv);
 
			       /* ATI PCIGART support (ati_pcigart.h) */
extern int drm_ati_pcigart_init(struct drm_device *dev,
				struct drm_ati_pcigart_info * gart_info);
extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
				   struct drm_ati_pcigart_info * gart_info);
 
extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
				       size_t align);
extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
 
#if 0
			       /* sysfs support (drm_sysfs.c) */
struct drm_sysfs_class;
extern struct class *drm_sysfs_create(struct module *owner, char *name);
extern void drm_sysfs_destroy(void);
extern struct device *drm_sysfs_minor_alloc(struct drm_minor *minor);
extern void drm_sysfs_hotplug_event(struct drm_device *dev);
extern int drm_sysfs_connector_add(struct drm_connector *connector);
extern void drm_sysfs_connector_remove(struct drm_connector *connector);
#endif
 
/* Graphics Execution Manager library functions (drm_gem.c) */
int drm_gem_init(struct drm_device *dev);
void drm_gem_destroy(struct drm_device *dev);
void drm_gem_object_release(struct drm_gem_object *obj);
void drm_gem_object_free(struct kref *kref);
int drm_gem_object_init(struct drm_device *dev,
			struct drm_gem_object *obj, size_t size);
void drm_gem_private_object_init(struct drm_device *dev,
			struct drm_gem_object *obj, size_t size);
void drm_gem_vm_open(struct vm_area_struct *vma);
void drm_gem_vm_close(struct vm_area_struct *vma);
int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
		     struct vm_area_struct *vma);
int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
 
#include 
 
static inline void
drm_gem_object_reference(struct drm_gem_object *obj)
{
	kref_get(&obj->refcount);
}
 
static inline void
drm_gem_object_unreference(struct drm_gem_object *obj)
{
	if (obj != NULL)
		kref_put(&obj->refcount, drm_gem_object_free);
}
 
static inline void
drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
{
	if (obj && !atomic_add_unless(&obj->refcount.refcount, -1, 1)) {
		struct drm_device *dev = obj->dev;
 
		mutex_lock(&dev->struct_mutex);
		if (likely(atomic_dec_and_test(&obj->refcount.refcount)))
			drm_gem_object_free(&obj->refcount);
		mutex_unlock(&dev->struct_mutex);
	}
}
 
int drm_gem_handle_create_tail(struct drm_file *file_priv,
			       struct drm_gem_object *obj,
			       u32 *handlep);
int drm_gem_handle_create(struct drm_file *file_priv,
			  struct drm_gem_object *obj,
			  u32 *handlep);
int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
 
 
void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
int drm_gem_create_mmap_offset_size(struct drm_gem_object *obj, size_t size);
 
struct page **drm_gem_get_pages(struct drm_gem_object *obj);
void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
		bool dirty, bool accessed);
 
struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
					     struct drm_file *filp,
					     u32 handle);
int drm_gem_close_ioctl(struct drm_device *dev, void *data,
			struct drm_file *file_priv);
int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
			struct drm_file *file_priv);
int drm_gem_open_ioctl(struct drm_device *dev, void *data,
		       struct drm_file *file_priv);
void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
 
extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
 
static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
							 unsigned int token)
{
	struct drm_map_list *_entry;
	list_for_each_entry(_entry, &dev->maplist, head)
	    if (_entry->user_token == token)
		return _entry->map;
	return NULL;
}
 
static __inline__ void drm_core_dropmap(struct drm_local_map *map)
{
}
 
#include 
 
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);
 
extern int drm_fill_in_dev(struct drm_device *dev,
			   const struct pci_device_id *ent,
			   struct drm_driver *driver);
int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
/*@}*/
 
/* 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);
 
 
 
 
 
 
static __inline__ int drm_device_is_pcie(struct drm_device *dev)
{
    return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
}
#endif				/* __KERNEL__ */
 
#define drm_sysfs_connector_add(connector)
#define drm_sysfs_connector_remove(connector)
 
#define LFB_SIZE 0x1000000
extern struct drm_device *main_device;
extern struct drm_file *drm_file_handlers[256];
 
#endif

Rev 5056	Rev 5178
1	/**	1	/**
2	* \file drmP.h	2	* \file drmP.h
3	* Private header for Direct Rendering Manager	3	* Private header for Direct Rendering Manager
4	*	4	*
5	* \author Rickard E. (Rik) Faith	5	* \author Rickard E. (Rik) Faith
6	* \author Gareth Hughes	6	* \author Gareth Hughes
7	*/	7	*/
8		8
9	/*	9	/*
10	* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.	10	* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
11	* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.	11	* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
12	* Copyright (c) 2009-2010, Code Aurora Forum.	12	* Copyright (c) 2009-2010, Code Aurora Forum.
13	* All rights reserved.	13	* All rights reserved.
14	*	14	*
15	* Permission is hereby granted, free of charge, to any person obtaining a	15	* Permission is hereby granted, free of charge, to any person obtaining a
16	* copy of this software and associated documentation files (the "Software"),	16	* copy of this software and associated documentation files (the "Software"),
17	* to deal in the Software without restriction, including without limitation	17	* to deal in the Software without restriction, including without limitation
18	* the rights to use, copy, modify, merge, publish, distribute, sublicense,	18	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
19	* and/or sell copies of the Software, and to permit persons to whom the	19	* and/or sell copies of the Software, and to permit persons to whom the
20	* Software is furnished to do so, subject to the following conditions:	20	* Software is furnished to do so, subject to the following conditions:
21	*	21	*
22	* The above copyright notice and this permission notice (including the next	22	* The above copyright notice and this permission notice (including the next
23	* paragraph) shall be included in all copies or substantial portions of the	23	* paragraph) shall be included in all copies or substantial portions of the
24	* Software.	24	* Software.
25	*	25	*
26	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR	26	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,	27	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL	28	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
29	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR	29	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
30	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,	30	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
31	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR	31	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
32	* OTHER DEALINGS IN THE SOFTWARE.	32	* OTHER DEALINGS IN THE SOFTWARE.
33	*/	33	*/
34		34
35	#ifndef _DRM_P_H_	35	#ifndef _DRM_P_H_
36	#define _DRM_P_H_	36	#define _DRM_P_H_
37		37
38	#define iowrite32(v, addr) writel((v), (addr))	38	#define iowrite32(v, addr) writel((v), (addr))
39		39
40	#ifdef __KERNEL__	40	#ifdef __KERNEL__
41	#ifdef __alpha__	41	#ifdef __alpha__
42	/* add include of current.h so that "current" is defined	42	/* add include of current.h so that "current" is defined
43	* before static inline funcs in wait.h. Doing this so we	43	* before static inline funcs in wait.h. Doing this so we
44	* can build the DRM (part of PI DRI). 4/21/2000 S + B */	44	* can build the DRM (part of PI DRI). 4/21/2000 S + B */
45	#include	45	#include
46	#endif /* __alpha__ */	46	#endif /* __alpha__ */
47		47
48	#include	48	#include
49		49
50	#include	50	#include
51	#include	51	#include
52	#include	52	#include
53	#include	53	#include
54	#include	54	#include
55	#include	55	#include
56	#include	56	#include
57	#include	57	#include
58		58
59	#include	59	#include
60	#include	60	#include
61		61
62	#include	62	#include
63	//#include	63	//#include
64	#include	64	#include
65	#include	65	#include
66	#include	66	#include
67	#include	67	#include
68		68
69	#include	69	#include
70	#include	70	#include
71	//#include	71	//#include
72	#include	72	#include
73		73
74	//#include	74	//#include
75	//#include	75	//#include
76	//#include	76	//#include
77	//#include	77	//#include
78		78
79	#include	79	#include
80	#include	80	#include
81		81
82		82
83	#include	83	#include
84	#include	84	#include
85		85
86	#include	86	#include
87		87
88	#define __OS_HAS_AGP (defined(CONFIG_AGP) \|\| (defined(CONFIG_AGP_MODULE) && defined(MODULE)))	88	#define __OS_HAS_AGP (defined(CONFIG_AGP) \|\| (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
89		89
90	struct module;	90	struct module;
91		91
92	struct drm_file;	92	struct drm_file;
93	struct drm_device;	93	struct drm_device;
94		94
95	struct device_node;	95	struct device_node;
96	struct videomode;	96	struct videomode;
97	struct reservation_object;	97	struct reservation_object;
98		98
99	struct inode;	99	struct inode;
100	struct poll_table_struct;	100	struct poll_table_struct;
101	struct drm_lock_data;	101	struct drm_lock_data;
102		102
103	struct sg_table;	103	struct sg_table;
104	struct dma_buf;	104	struct dma_buf;
105		105
106	//#include	106	//#include
107	#include	107	#include
108	#include	108	#include
109		109
110	#define KHZ2PICOS(a) (1000000000UL/(a))	110	#define KHZ2PICOS(a) (1000000000UL/(a))
111		111
112	/* Flags and return codes for get_vblank_timestamp() driver function. */	112	/* Flags and return codes for get_vblank_timestamp() driver function. */
113	#define DRM_CALLED_FROM_VBLIRQ 1	113	#define DRM_CALLED_FROM_VBLIRQ 1
114	#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)	114	#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
115	#define DRM_VBLANKTIME_INVBL (1 << 1)	115	#define DRM_VBLANKTIME_INVBL (1 << 1)
116		116
117		117
118	/* get_scanout_position() return flags */	118	/* get_scanout_position() return flags */
119	#define DRM_SCANOUTPOS_VALID (1 << 0)	119	#define DRM_SCANOUTPOS_VALID (1 << 0)
120	#define DRM_SCANOUTPOS_INVBL (1 << 1)	120	#define DRM_SCANOUTPOS_INVBL (1 << 1)
121	#define DRM_SCANOUTPOS_ACCURATE (1 << 2)	121	#define DRM_SCANOUTPOS_ACCURATE (1 << 2)
122		122
123	/*	123	/*
124	* 4 debug categories are defined:	124	* 4 debug categories are defined:
125	*	125	*
126	* CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...	126	* CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
127	* This is the category used by the DRM_DEBUG() macro.	127	* This is the category used by the DRM_DEBUG() macro.
128	*	128	*
129	* DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...	129	* DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
130	* This is the category used by the DRM_DEBUG_DRIVER() macro.	130	* This is the category used by the DRM_DEBUG_DRIVER() macro.
131	*	131	*
132	* KMS: used in the modesetting code.	132	* KMS: used in the modesetting code.
133	* This is the category used by the DRM_DEBUG_KMS() macro.	133	* This is the category used by the DRM_DEBUG_KMS() macro.
134	*	134	*
135	* PRIME: used in the prime code.	135	* PRIME: used in the prime code.
136	* This is the category used by the DRM_DEBUG_PRIME() macro.	136	* This is the category used by the DRM_DEBUG_PRIME() macro.
137	*	137	*
138	* Enabling verbose debug messages is done through the drm.debug parameter,	138	* Enabling verbose debug messages is done through the drm.debug parameter,
139	* each category being enabled by a bit.	139	* each category being enabled by a bit.
140	*	140	*
141	* drm.debug=0x1 will enable CORE messages	141	* drm.debug=0x1 will enable CORE messages
142	* drm.debug=0x2 will enable DRIVER messages	142	* drm.debug=0x2 will enable DRIVER messages
143	* drm.debug=0x3 will enable CORE and DRIVER messages	143	* drm.debug=0x3 will enable CORE and DRIVER messages
144	* ...	144	* ...
145	* drm.debug=0xf will enable all messages	145	* drm.debug=0xf will enable all messages
146	*	146	*
147	* An interesting feature is that it's possible to enable verbose logging at	147	* An interesting feature is that it's possible to enable verbose logging at
148	* run-time by echoing the debug value in its sysfs node:	148	* run-time by echoing the debug value in its sysfs node:
149	* # echo 0xf > /sys/module/drm/parameters/debug	149	* # echo 0xf > /sys/module/drm/parameters/debug
150	*/	150	*/
151	#define DRM_UT_CORE 0x01	151	#define DRM_UT_CORE 0x01
152	#define DRM_UT_DRIVER 0x02	152	#define DRM_UT_DRIVER 0x02
153	#define DRM_UT_KMS 0x04	153	#define DRM_UT_KMS 0x04
154	#define DRM_UT_PRIME 0x08	154	#define DRM_UT_PRIME 0x08
155		155
156	extern __printf(2, 3)	156	extern __printf(2, 3)
157	void drm_ut_debug_printk(const char *function_name,	157	void drm_ut_debug_printk(const char *function_name,
158	const char *format, ...);	158	const char *format, ...);
159	extern __printf(2, 3)	159	extern __printf(2, 3)
160	int drm_err(const char func, const char format, ...);	160	int drm_err(const char func, const char format, ...);
161		161
162	/***********************************************************************/	162	/***********************************************************************/
163	/** \name DRM template customization defaults */	163	/** \name DRM template customization defaults */
164	/@{/	164	/@{/
165		165
166	/* driver capabilities and requirements mask */	166	/* driver capabilities and requirements mask */
167	#define DRIVER_USE_AGP 0x1	167	#define DRIVER_USE_AGP 0x1
168	#define DRIVER_PCI_DMA 0x8	168	#define DRIVER_PCI_DMA 0x8
169	#define DRIVER_SG 0x10	169	#define DRIVER_SG 0x10
170	#define DRIVER_HAVE_DMA 0x20	170	#define DRIVER_HAVE_DMA 0x20
171	#define DRIVER_HAVE_IRQ 0x40	171	#define DRIVER_HAVE_IRQ 0x40
172	#define DRIVER_IRQ_SHARED 0x80	172	#define DRIVER_IRQ_SHARED 0x80
173	#define DRIVER_GEM 0x1000	173	#define DRIVER_GEM 0x1000
174	#define DRIVER_MODESET 0x2000	174	#define DRIVER_MODESET 0x2000
175	#define DRIVER_PRIME 0x4000	175	#define DRIVER_PRIME 0x4000
176	#define DRIVER_RENDER 0x8000	176	#define DRIVER_RENDER 0x8000
177		177
178	#define DRIVER_BUS_PCI 0x1	178	#define DRIVER_BUS_PCI 0x1
179	#define DRIVER_BUS_PLATFORM 0x2	179	#define DRIVER_BUS_PLATFORM 0x2
180	#define DRIVER_BUS_USB 0x3	180	#define DRIVER_BUS_USB 0x3
181	#define DRIVER_BUS_HOST1X 0x4	181	#define DRIVER_BUS_HOST1X 0x4
182		182
183	/***********************************************************************/	183	/***********************************************************************/
184	/** \name Begin the DRM... */	184	/** \name Begin the DRM... */
185	/@{/	185	/@{/
186		186
187	#define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then	187	#define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
188	also include looping detection. */	188	also include looping detection. */
189		189
190	#define DRM_MAGIC_HASH_ORDER 4 /*< Size of key hash table. Must be power of 2. /	190	#define DRM_MAGIC_HASH_ORDER 4 /*< Size of key hash table. Must be power of 2. /
191		191
192	#define DRM_MAP_HASH_OFFSET 0x10000000	192	#define DRM_MAP_HASH_OFFSET 0x10000000
193		193
194	/@}/	194	/@}/
195		195
196	/***********************************************************************/	196	/***********************************************************************/
197	/** \name Macros to make printk easier */	197	/** \name Macros to make printk easier */
198	/@{/	198	/@{/
199		199
200	/**	200	/**
201	* Error output.	201	* Error output.
202	*	202	*
203	* \param fmt printf() like format string.	203	* \param fmt printf() like format string.
204	* \param arg arguments	204	* \param arg arguments
205	*/	205	*/
206	#define DRM_ERROR(fmt, ...) \	206	#define DRM_ERROR(fmt, ...) \
207	drm_err(__func__, fmt, ##__VA_ARGS__)	207	drm_err(__func__, fmt, ##__VA_ARGS__)
208		208
209	/**	209	/**
210	* Rate limited error output. Like DRM_ERROR() but won't flood the log.	210	* Rate limited error output. Like DRM_ERROR() but won't flood the log.
211	*	211	*
212	* \param fmt printf() like format string.	212	* \param fmt printf() like format string.
213	* \param arg arguments	213	* \param arg arguments
214	*/	214	*/
215	#define DRM_ERROR_RATELIMITED(fmt, ...) \	215	#define DRM_ERROR_RATELIMITED(fmt, ...) \
216	({ \	216	({ \
217	static DEFINE_RATELIMIT_STATE(_rs, \	217	static DEFINE_RATELIMIT_STATE(_rs, \
218	DEFAULT_RATELIMIT_INTERVAL, \	218	DEFAULT_RATELIMIT_INTERVAL, \
219	DEFAULT_RATELIMIT_BURST); \	219	DEFAULT_RATELIMIT_BURST); \
220	\	220	\
221	if (__ratelimit(&_rs)) \	221	if (__ratelimit(&_rs)) \
222	drm_err(__func__, fmt, ##__VA_ARGS__); \	222	drm_err(__func__, fmt, ##__VA_ARGS__); \
223	})	223	})
224		224
225	#define DRM_INFO(fmt, ...) \	225	#define DRM_INFO(fmt, ...) \
226	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)	226	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
227		227
228	#define DRM_INFO_ONCE(fmt, ...) \	228	#define DRM_INFO_ONCE(fmt, ...) \
229	printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)	229	printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
230		230
231	/**	231	/**
232	* Debug output.	232	* Debug output.
233	*	233	*
234	* \param fmt printf() like format string.	234	* \param fmt printf() like format string.
235	* \param arg arguments	235	* \param arg arguments
236	*/	236	*/
237	#if DRM_DEBUG_CODE	237	#if DRM_DEBUG_CODE
238	#define DRM_DEBUG(fmt, args...) \	238	#define DRM_DEBUG(fmt, args...) \
239	do { \	239	do { \
240	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	240	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
241	} while (0)	241	} while (0)
242		242
243	#define DRM_DEBUG_DRIVER(fmt, args...) \	243	#define DRM_DEBUG_DRIVER(fmt, args...) \
244	do { \	244	do { \
245	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	245	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
246	} while (0)	246	} while (0)
247	#define DRM_DEBUG_KMS(fmt, args...) \	247	#define DRM_DEBUG_KMS(fmt, args...) \
248	do { \	248	do { \
249	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	249	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
250	} while (0)	250	} while (0)
251	#define DRM_DEBUG_PRIME(fmt, args...) \	251	#define DRM_DEBUG_PRIME(fmt, args...) \
252	do { \	252	do { \
253	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \	253	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args); \
254	} while (0)	254	} while (0)
255	#else	255	#else
256	#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)	256	#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
257	#define DRM_DEBUG_KMS(fmt, args...) do { } while (0)	257	#define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
258	#define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)	258	#define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
259	#define DRM_DEBUG(fmt, arg...) do { } while (0)	259	#define DRM_DEBUG(fmt, arg...) do { } while (0)
260	#endif	260	#endif
261		261
262	/@}/	262	/@}/
263		263
264	/***********************************************************************/	264	/***********************************************************************/
265	/** \name Internal types and structures */	265	/** \name Internal types and structures */
266	/@{/	266	/@{/
267		267
268	#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)	268	#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
269		269
270	#define DRM_IF_VERSION(maj, min) (maj << 16 \| min)	270	#define DRM_IF_VERSION(maj, min) (maj << 16 \| min)
271		271
272	/**	272	/**
273	* Test that the hardware lock is held by the caller, returning otherwise.	273	* Test that the hardware lock is held by the caller, returning otherwise.
274	*	274	*
275	* \param dev DRM device.	275	* \param dev DRM device.
276	* \param filp file pointer of the caller.	276	* \param filp file pointer of the caller.
277	*/	277	*/
278	#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \	278	#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
279	do { \	279	do { \
280	if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) \|\| \	280	if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) \|\| \
281	_file_priv->master->lock.file_priv != _file_priv) { \	281	_file_priv->master->lock.file_priv != _file_priv) { \
282	DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\	282	DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
283	__func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\	283	__func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
284	_file_priv->master->lock.file_priv, _file_priv); \	284	_file_priv->master->lock.file_priv, _file_priv); \
285	return -EINVAL; \	285	return -EINVAL; \
286	} \	286	} \
287	} while (0)	287	} while (0)
288		288
289	/**	289	/**
290	* Ioctl function type.	290	* Ioctl function type.
291	*	291	*
292	* \param inode device inode.	292	* \param inode device inode.
293	* \param file_priv DRM file private pointer.	293	* \param file_priv DRM file private pointer.
294	* \param cmd command.	294	* \param cmd command.
295	* \param arg argument.	295	* \param arg argument.
296	*/	296	*/
297	typedef int drm_ioctl_t(struct drm_device dev, void data,	297	typedef int drm_ioctl_t(struct drm_device dev, void data,
298	struct drm_file *file_priv);	298	struct drm_file *file_priv);
299		299
300	typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,	300	typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
301	unsigned long arg);	301	unsigned long arg);
302		302
303	#define DRM_IOCTL_NR(n) _IOC_NR(n)	303	#define DRM_IOCTL_NR(n) _IOC_NR(n)
304	#define DRM_MAJOR 226	304	#define DRM_MAJOR 226
305		305
306	#define DRM_AUTH 0x1	306	#define DRM_AUTH 0x1
307	#define DRM_MASTER 0x2	307	#define DRM_MASTER 0x2
308	#define DRM_ROOT_ONLY 0x4	308	#define DRM_ROOT_ONLY 0x4
309	#define DRM_CONTROL_ALLOW 0x8	309	#define DRM_CONTROL_ALLOW 0x8
310	#define DRM_UNLOCKED 0x10	310	#define DRM_UNLOCKED 0x10
311	#define DRM_RENDER_ALLOW 0x20	311	#define DRM_RENDER_ALLOW 0x20
312		312
313	struct drm_ioctl_desc {	313	struct drm_ioctl_desc {
314	unsigned int cmd;	314	unsigned int cmd;
315	int flags;	315	int flags;
316	drm_ioctl_t *func;	316	drm_ioctl_t *func;
317	unsigned int cmd_drv;	317	unsigned int cmd_drv;
318	const char *name;	318	const char *name;
319	};	319	};
320		320
321	/**	321	/**
322	* Creates a driver or general drm_ioctl_desc array entry for the given	322	* Creates a driver or general drm_ioctl_desc array entry for the given
323	* ioctl, for use by drm_ioctl().	323	* ioctl, for use by drm_ioctl().
324	*/	324	*/
325		325
326	#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \	326	#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
327	[DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}	327	[DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl, .name = #ioctl}
328		328
329	#if 0	329	#if 0
330	struct drm_magic_entry {	330	struct drm_magic_entry {
331	struct list_head head;	331	struct list_head head;
332	struct drm_hash_item hash_item;	332	struct drm_hash_item hash_item;
333	struct drm_file *priv;	333	struct drm_file *priv;
334	};	334	};
335		335
336	struct drm_vma_entry {	336	struct drm_vma_entry {
337	struct list_head head;	337	struct list_head head;
338	struct vm_area_struct *vma;	338	struct vm_area_struct *vma;
339	pid_t pid;	339	pid_t pid;
340	};	340	};
341		341
342	/**	342	/**
343	* DMA buffer.	343	* DMA buffer.
344	*/	344	*/
345	struct drm_buf {	345	struct drm_buf {
346	int idx; /*< Index into master buflist /	346	int idx; /*< Index into master buflist /
347	int total; /*< Buffer size /	347	int total; /*< Buffer size /
348	int order; /*< log-base-2(total) /	348	int order; /*< log-base-2(total) /
349	int used; /*< Amount of buffer in use (for DMA) /	349	int used; /*< Amount of buffer in use (for DMA) /
350	unsigned long offset; /*< Byte offset (used internally) /	350	unsigned long offset; /*< Byte offset (used internally) /
351	void address; /< Address of buffer /	351	void address; /< Address of buffer /
352	unsigned long bus_address; /*< Bus address of buffer /	352	unsigned long bus_address; /*< Bus address of buffer /
353	struct drm_buf next; /< Kernel-only: used for free list /	353	struct drm_buf next; /< Kernel-only: used for free list /
354	__volatile__ int waiting; /*< On kernel DMA queue /	354	__volatile__ int waiting; /*< On kernel DMA queue /
355	__volatile__ int pending; /*< On hardware DMA queue /	355	__volatile__ int pending; /*< On hardware DMA queue /
356	struct drm_file file_priv; /< Private of holding file descr /	356	struct drm_file file_priv; /< Private of holding file descr /
357	int context; /*< Kernel queue for this buffer /	357	int context; /*< Kernel queue for this buffer /
358	int while_locked; /*< Dispatch this buffer while locked /	358	int while_locked; /*< Dispatch this buffer while locked /
359	enum {	359	enum {
360	DRM_LIST_NONE = 0,	360	DRM_LIST_NONE = 0,
361	DRM_LIST_FREE = 1,	361	DRM_LIST_FREE = 1,
362	DRM_LIST_WAIT = 2,	362	DRM_LIST_WAIT = 2,
363	DRM_LIST_PEND = 3,	363	DRM_LIST_PEND = 3,
364	DRM_LIST_PRIO = 4,	364	DRM_LIST_PRIO = 4,
365	DRM_LIST_RECLAIM = 5	365	DRM_LIST_RECLAIM = 5
366	} list; /*< Which list we're on /	366	} list; /*< Which list we're on /
367		367
368	int dev_priv_size; /*< Size of buffer private storage /	368	int dev_priv_size; /*< Size of buffer private storage /
369	void dev_private; /< Per-buffer private storage /	369	void dev_private; /< Per-buffer private storage /
370	};	370	};
371		371
372	/** bufs is one longer than it has to be */	372	/** bufs is one longer than it has to be */
373	struct drm_waitlist {	373	struct drm_waitlist {
374	int count; /*< Number of possible buffers /	374	int count; /*< Number of possible buffers /
375	struct drm_buf bufs; /< List of pointers to buffers */	375	struct drm_buf bufs; /< List of pointers to buffers */
376	struct drm_buf rp; /< Read pointer */	376	struct drm_buf rp; /< Read pointer */
377	struct drm_buf wp; /< Write pointer */	377	struct drm_buf wp; /< Write pointer */
378	struct drm_buf end; /< End pointer */	378	struct drm_buf end; /< End pointer */
379	spinlock_t read_lock;	379	spinlock_t read_lock;
380	spinlock_t write_lock;	380	spinlock_t write_lock;
381	};	381	};
382	#endif	382	#endif
383		383
384		384
385	typedef struct drm_dma_handle {	385	typedef struct drm_dma_handle {
386	dma_addr_t busaddr;	386	dma_addr_t busaddr;
387	void *vaddr;	387	void *vaddr;
388	size_t size;	388	size_t size;
389	} drm_dma_handle_t;	389	} drm_dma_handle_t;
390		390
391	/**	391	/**
392	* Buffer entry. There is one of this for each buffer size order.	392	* Buffer entry. There is one of this for each buffer size order.
393	*/	393	*/
394	struct drm_buf_entry {	394	struct drm_buf_entry {
395	int buf_size; /*< size /	395	int buf_size; /*< size /
396	int buf_count; /*< number of buffers /	396	int buf_count; /*< number of buffers /
397	struct drm_buf buflist; /< buffer list /	397	struct drm_buf buflist; /< buffer list /
398	int seg_count;	398	int seg_count;
399	int page_order;	399	int page_order;
400	struct drm_dma_handle **seglist;	400	struct drm_dma_handle **seglist;
401		401
402	int low_mark; /*< Low water mark /	402	int low_mark; /*< Low water mark /
403	int high_mark; /*< High water mark /	403	int high_mark; /*< High water mark /
404	};	404	};
405		405
406	/* Event queued up for userspace to read */	406	/* Event queued up for userspace to read */
407	struct drm_pending_event {	407	struct drm_pending_event {
408	struct drm_event *event;	408	struct drm_event *event;
409	struct list_head link;	409	struct list_head link;
410	struct drm_file *file_priv;	410	struct drm_file *file_priv;
411	pid_t pid; /* pid of requester, no guarantee it's valid by the time	411	pid_t pid; /* pid of requester, no guarantee it's valid by the time
412	we deliver the event, for tracing only */	412	we deliver the event, for tracing only */
413	void (destroy)(struct drm_pending_event event);	413	void (destroy)(struct drm_pending_event event);
414	};	414	};
415		415
416	/* initial implementaton using a linked list - todo hashtab */	416	/* initial implementaton using a linked list - todo hashtab */
417	struct drm_prime_file_private {	417	struct drm_prime_file_private {
418	struct list_head head;	418	struct list_head head;
419	struct mutex lock;	419	struct mutex lock;
420	};	420	};
421		421
422	/** File private data */	422	/** File private data */
423	struct drm_file {	423	struct drm_file {
424	unsigned authenticated :1;	424	unsigned authenticated :1;
425	/* Whether we're master for a minor. Protected by master_mutex */	425	/* Whether we're master for a minor. Protected by master_mutex */
426	unsigned is_master :1;	426	unsigned is_master :1;
427	/* true when the client has asked us to expose stereo 3D mode flags */	427	/* true when the client has asked us to expose stereo 3D mode flags */
428	unsigned stereo_allowed :1;	428	unsigned stereo_allowed :1;
429	/*	429	/*
430	* true if client understands CRTC primary planes and cursor planes	430	* true if client understands CRTC primary planes and cursor planes
431	* in the plane list	431	* in the plane list
432	*/	432	*/
433	unsigned universal_planes:1;	433	unsigned universal_planes:1;
434	struct list_head lhead;	434	struct list_head lhead;
435	unsigned long lock_count;	435	unsigned long lock_count;
436		436
437	/** Mapping of mm object handles to object pointers. */	437	/** Mapping of mm object handles to object pointers. */
438	struct idr object_idr;	438	struct idr object_idr;
439	/** Lock for synchronization of access to object_idr. */	439	/** Lock for synchronization of access to object_idr. */
440	spinlock_t table_lock;	440	spinlock_t table_lock;
441		441
442	void *driver_priv;	442	void *driver_priv;
443		443
444	struct drm_master master; / master this node is currently associated with	444	struct drm_master master; / master this node is currently associated with
445	N.B. not always minor->master */	445	N.B. not always minor->master */
446	/**	446	/**
447	* fbs - List of framebuffers associated with this file.	447	* fbs - List of framebuffers associated with this file.
448	*	448	*
449	* Protected by fbs_lock. Note that the fbs list holds a reference on	449	* Protected by fbs_lock. Note that the fbs list holds a reference on
450	* the fb object to prevent it from untimely disappearing.	450	* the fb object to prevent it from untimely disappearing.
451	*/	451	*/
452	struct list_head fbs;	452	struct list_head fbs;
453	struct mutex fbs_lock;	453	struct mutex fbs_lock;
454		454
455	wait_queue_head_t event_wait;	455	wait_queue_head_t event_wait;
456	struct list_head event_list;	456	struct list_head event_list;
457	int event_space;	457	int event_space;
458	};	458	};
459		459
460	#if 0	460	#if 0
461	/**	461	/**
462	* Lock data.	462	* Lock data.
463	*/	463	*/
464	struct drm_lock_data {	464	struct drm_lock_data {
465	struct drm_hw_lock hw_lock; /< Hardware lock /	465	struct drm_hw_lock hw_lock; /< Hardware lock /
466	/** Private of lock holder's file (NULL=kernel) */	466	/** Private of lock holder's file (NULL=kernel) */
467	struct drm_file *file_priv;	467	struct drm_file *file_priv;
468	wait_queue_head_t lock_queue; /*< Queue of blocked processes /	468	wait_queue_head_t lock_queue; /*< Queue of blocked processes /
469	unsigned long lock_time; /*< Time of last lock in jiffies /	469	unsigned long lock_time; /*< Time of last lock in jiffies /
470	spinlock_t spinlock;	470	spinlock_t spinlock;
471	uint32_t kernel_waiters;	471	uint32_t kernel_waiters;
472	uint32_t user_waiters;	472	uint32_t user_waiters;
473	int idle_has_lock;	473	int idle_has_lock;
474	};	474	};
475		475
476	/**	476	/**
477	* DMA data.	477	* DMA data.
478	*/	478	*/
479	struct drm_device_dma {	479	struct drm_device_dma {
480		480
481	struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /*< buffers, grouped by their size order /	481	struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /*< buffers, grouped by their size order /
482	int buf_count; /*< total number of buffers /	482	int buf_count; /*< total number of buffers /
483	struct drm_buf buflist; /< Vector of pointers into drm_device_dma::bufs */	483	struct drm_buf buflist; /< Vector of pointers into drm_device_dma::bufs */
484	int seg_count;	484	int seg_count;
485	int page_count; /*< number of pages /	485	int page_count; /*< number of pages /
486	unsigned long pagelist; /< page list /	486	unsigned long pagelist; /< page list /
487	unsigned long byte_count;	487	unsigned long byte_count;
488	enum {	488	enum {
489	_DRM_DMA_USE_AGP = 0x01,	489	_DRM_DMA_USE_AGP = 0x01,
490	_DRM_DMA_USE_SG = 0x02,	490	_DRM_DMA_USE_SG = 0x02,
491	_DRM_DMA_USE_FB = 0x04,	491	_DRM_DMA_USE_FB = 0x04,
492	_DRM_DMA_USE_PCI_RO = 0x08	492	_DRM_DMA_USE_PCI_RO = 0x08
493	} flags;	493	} flags;
494		494
495	};	495	};
496		496
497	/**	497	/**
498	* AGP memory entry. Stored as a doubly linked list.	498	* AGP memory entry. Stored as a doubly linked list.
499	*/	499	*/
500	struct drm_agp_mem {	500	struct drm_agp_mem {

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(root)/drivers/include/drm/drmP.h – Rev 5056 → 5178