 @@ -1,1667 +1,1689 @@
 /**
  * \file drmP.h
  * Private header for Direct Rendering Manager
+ *
  * \author Rickard E. (Rik) Faith <faith@valinux.com>
  * \author Gareth Hughes <gareth@valinux.com>
  */
 /*
  * 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_
 #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 <asm/current.h>
 #endif				/* __alpha__ */
 #include <linux/kernel.h>
 #include <linux/miscdevice.h>
 #include <linux/fs.h>
 #include <linux/proc_fs.h>
 #include <linux/init.h>
 #include <linux/file.h>
 #include <linux/platform_device.h>
 #include <linux/pci.h>
 #include <linux/jiffies.h>
 #include <linux/dma-mapping.h>
 #include <linux/mm.h>
 #include <linux/cdev.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #if defined(__alpha__) || defined(__powerpc__)
 #include <asm/pgtable.h>	/* For pte_wrprotect */
 #endif
 #include <asm/io.h>
 #include <asm/mman.h>
 #include <asm/uaccess.h>
 #ifdef CONFIG_MTRR
 #include <asm/mtrr.h>
 #endif
 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
 #include <linux/types.h>
 #include <linux/agp_backend.h>
 #endif
 #include <linux/workqueue.h>
 #include <linux/poll.h>
 #include <linux/atomic.h>
 #include <linux/uidgid.h>
 #include <linux/kref.h>
 #include <linux/pm.h>
 #include <linux/timer.h>
 #include <asm/pgalloc.h>
 #include <drm/drm.h>
 #include <drm/drm_sarea.h>
 #include <asm/barrier.h>
 #include <linux/idr.h>
 #ifndef __NetBSD__
 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
 #endif
 struct module;
 struct drm_file;
 struct drm_device;
 #ifdef __NetBSD__
 #include <drm/drm_os_netbsd.h>
 #else
 #include <drm/drm_os_linux.h>
 #endif
 #include <drm/drm_hashtab.h>
 #include <drm/drm_mm.h>
 #define DRM_UT_CORE 		0x01
 #define DRM_UT_DRIVER		0x02
 #define DRM_UT_KMS		0x04
 #define DRM_UT_PRIME		0x08
 /*
  * Three debug levels are defined.
  * drm_core, drm_driver, drm_kms
  * drm_core level can be used in the generic drm code. For example:
  * 	drm_ioctl, drm_mm, drm_memory
  * The macro definition of DRM_DEBUG is used.
  * 	DRM_DEBUG(fmt, args...)
  * 	The debug info by using the DRM_DEBUG can be obtained by adding
  * 	the boot option of "drm.debug=1".
+ *
  * drm_driver level can be used in the specific drm driver. It is used
  * to add the debug info related with the drm driver. For example:
  * i915_drv, i915_dma, i915_gem, radeon_drv,
  * 	The macro definition of DRM_DEBUG_DRIVER can be used.
  * 	DRM_DEBUG_DRIVER(fmt, args...)
  * 	The debug info by using the DRM_DEBUG_DRIVER can be obtained by
  * 	adding the boot option of "drm.debug=0x02"
+ *
  * drm_kms level can be used in the KMS code related with specific drm driver.
  * It is used to add the debug info related with KMS mode. For example:
  * the connector/crtc ,
  * 	The macro definition of DRM_DEBUG_KMS can be used.
  * 	DRM_DEBUG_KMS(fmt, args...)
  * 	The debug info by using the DRM_DEBUG_KMS can be obtained by
  * 	adding the boot option of "drm.debug=0x04"
+ *
  * If we add the boot option of "drm.debug=0x06", we can get the debug info by
  * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
  * If we add the boot option of "drm.debug=0x05", we can get the debug info by
  * using the DRM_DEBUG_KMS and DRM_DEBUG.
  */
 extern __printf(4, 5)
 void drm_ut_debug_printk(unsigned int request_level,
 			 const char *prefix,
 			 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_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
 #define DRIVER_PRIME       0x4000
 #define DRIVER_BUS_PCI 0x1
 #define DRIVER_BUS_PLATFORM 0x2
 #define DRIVER_BUS_USB 0x3
 /***********************************************************************/
 /** \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, ...)				\
 	drm_err(__func__, fmt, ##__VA_ARGS__)
 #ifdef __NetBSD__
 /* XXX Use device_printf, with a device.  */
 #define	DRM_INFO(fmt, ...)				\
 	printf("drm: " fmt, ##__VA_ARGS__)
 #else
 #define DRM_INFO(fmt, ...)				\
 	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
 #endif
 /**
  * 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(fmt, args...)					\
 	do {								\
 		drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME,		\
 					__func__, fmt, ##args);		\
 	} while (0)
 #define DRM_DEBUG_KMS(fmt, args...)				\
 	do {								\
 		drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, 		\
 					 __func__, fmt, ##args);	\
 	} while (0)
 #define DRM_DEBUG_PRIME(fmt, args...)					\
 	do {								\
 		drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME,		\
 					__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(fmt, args...) do { } while (0)
 #define DRM_DEBUG_KMS(fmt, args...)	do { } while (0)
 #define DRM_DEBUG_PRIME(fmt, args...)	do { } while (0)
 #define DRM_DEBUG(fmt, arg...)		 do { } while (0)
 #define DRM_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
 /*@}*/
 /***********************************************************************/
 /** \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_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);
 #ifdef __NetBSD__
 /* XXX Kludge...is there a better way to do this?  */
 #define	DRM_IOCTL_NR(n)							\
 	(IOCBASECMD(n) &~ (IOC_DIRMASK | (IOCGROUP(n) << IOCGROUP_SHIFT)))
 #define	DRM_MAJOR	cdevsw_lookup_major(&drm_cdevsw)
 #else
 #define DRM_IOCTL_NR(n)                _IOC_NR(n)
 #define DRM_MAJOR       226
 #endif
 #define DRM_AUTH	0x1
 #define	DRM_MASTER	0x2
 #define DRM_ROOT_ONLY	0x4
 #define DRM_CONTROL_ALLOW 0x8
 #define DRM_UNLOCKED	0x10
 struct drm_ioctl_desc {
 	unsigned int cmd;
 	int flags;
 	drm_ioctl_t *func;
 	unsigned int cmd_drv;
 };
 /**
  * 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}
 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;
 };
 struct drm_freelist {
 #ifndef __NetBSD__
 	int initialized;	       /**< Freelist in use */
 	atomic_t count;		       /**< Number of free buffers */
 	struct drm_buf *next;	       /**< End pointer */
 #ifdef __NetBSD__
 	drm_waitqueue_t waiting;       /**< Processes waiting on free bufs */
 #else
 	wait_queue_head_t waiting;     /**< Processes waiting on free bufs */
 #endif
 #endif
 	int low_mark;		       /**< Low water mark */
 	int high_mark;		       /**< High water mark */
 #ifndef __NetBSD__
 	atomic_t wfh;		       /**< If waiting for high mark */
 	spinlock_t lock;
 #endif
 };
 typedef struct drm_dma_handle {
 	dma_addr_t busaddr;
 	void *vaddr;
 	size_t size;
 #ifdef __NetBSD__
 	bus_dma_tag_t dmah_tag;
 	bus_dmamap_t dmah_map;
 	bus_dma_segment_t dmah_seg;
 #endif
 } 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;
 };
 /* 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 {
 	int authenticated;
 #ifndef __NetBSD__
 	struct pid *pid;
 	kuid_t uid;
 #endif
 	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;
 #ifdef __NetBSD__
 	drm_waitqueue_t event_wait;
 #else
 	wait_queue_head_t event_wait;
 #endif
 	struct list_head event_list;
 	int event_space;
 #ifdef __NetBSD__
 #if 0				/* XXX drm event poll */
 	struct selinfo event_sel;
 #endif
 #endif
 	struct drm_prime_file_private prime;
 };
 /** 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 */
 #ifdef __NetBSD__
 	drm_waitqueue_t read_queue;	/**< Processes waiting on block_read */
 #else
 	wait_queue_head_t read_queue;	/**< Processes waiting on block_read */
 #endif
 	atomic_t block_write;		/**< Queue blocked for writes */
 #ifdef __NetBSD__
 	drm_waitqueue_t write_queue;	/**< Processes waiting on block_write */
 #else
 	wait_queue_head_t write_queue;	/**< Processes waiting on block_write */
 #endif
 	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 */
 #ifdef __NetBSD__
 	drm_waitqueue_t flush_queue;	/**< Processes waiting until flush */
 #else
 	wait_queue_head_t flush_queue;	/**< Processes waiting until flush */
 #endif
 };
 /**
  * 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;
 #ifdef __NetBSD__
 	drm_waitqueue_t lock_queue;	/**< Queue of blocked processes */
 #else
 	wait_queue_head_t lock_queue;	/**< Queue of blocked processes */
 #endif
 #ifndef __NetBSD__		 /* XXX nothing seems to use this */
 	unsigned long lock_time;	/**< Time of last lock in jiffies */
 #endif
 	spinlock_t spinlock;
 #ifdef __NetBSD__
 	unsigned int n_kernel_waiters;
 	drm_waitqueue_t kernel_lock_queue;
 #else
 	uint32_t kernel_waiters;
 	uint32_t user_waiters;
 	int idle_has_lock;
 #endif
 };
 /**
  * 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;
 #ifndef __NetBSD__
 	int cant_use_aperture;
 	unsigned long page_mask;
 #endif
 };
 /**
  * Scatter-gather memory.
  */
 struct drm_sg_mem {
 	unsigned long handle;
 	void *virtual;
 #ifdef __NetBSD__
 	size_t sg_size;
 	bus_dma_tag_t sg_tag;
 	bus_dmamap_t sg_map;
 	unsigned int sg_nsegs;
 	unsigned int sg_nsegs_max;
 	bus_dma_segment_t sg_segs[];
 #else
 	int pages;
 	struct page **pagelist;
 	dma_addr_t *busaddr;
 #endif
 };
 struct drm_sigdata {
 	int context;
 	struct drm_hw_lock *lock;
 };
 #ifdef __NetBSD__
 /*
  * XXX Remember: memory mappings only.  bm_flags must include
  * BUS_SPACE_MAP_LINEAR.
  */
 struct drm_bus_map {
 	bus_addr_t		bm_base;
 	bus_size_t		bm_size;
 	bus_space_handle_t	bm_bsh;
 	int			bm_flags;
 	unsigned int		bm_mapped;
 };
 #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 */
 #ifdef __NetBSD__
-	bus_space_handle_t bsh;
+	union {
-	struct drm_bus_map *bus_map;
+		/* _DRM_FRAME_BUFFER, _DRM_AGP, _DRM_REGISTERS */
 		/* XXX mtrr should be moved into this case too.  */
 		struct {
 			/*
 			 * XXX bst seems like a waste of space, but not
 			 * all accessors have the drm_device handy.
 			 */
 			bus_space_tag_t bst;
 			bus_space_handle_t bsh;
 			struct drm_bus_map *bus_map;
 		} bus_space;
 		/* _DRM_CONSISTENT */
 		struct drm_dma_handle *dmah;
 		/* _DRM_SCATTER_GATHER */
 #if 0				/* XXX stored in dev->sg instead */
 		struct drm_sg_mem *sg;
 #endif
 		/* _DRM_SHM */
 		/* XXX Anything?  uvm object?  */
 	} lm_data;
 #endif
 };
 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 */
 	atomic_t handle_count; /* number of handles on this object */
 	/** 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;
 	/* dma buf exported from this GEM object */
 	struct dma_buf *export_dma_buf;
 	/* dma buf attachment backing this object */
 	struct dma_buf_attachment *import_attach;
 };
 #include <drm/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 */
 };
 /* 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_irq_cookie;
 struct drm_bus {
 	int bus_type;
 	/*
 	 * XXX NetBSD will have a problem with this: pci_intr_handle_t
 	 * is a long on some LP64 architectures, where int is 32-bit,
 	 * such as alpha and mips64.
 	 */
 	int (*get_irq)(struct drm_device *dev);
 #ifdef __NetBSD__
 	int (*irq_install)(struct drm_device *, irqreturn_t (*)(void *), int,
 	    const char *, void *, struct drm_bus_irq_cookie **);
 	void (*irq_uninstall)(struct drm_device *,
 	    struct drm_bus_irq_cookie *);
 #endif
 	const char *(*get_name)(struct drm_device *dev);
 	int (*set_busid)(struct drm_device *dev, struct drm_master *master);
 	int (*set_unique)(struct drm_device *dev, struct drm_master *master,
 			  struct drm_unique *unique);
 	int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p);
 	/* hooks that are for PCI */
 	int (*agp_init)(struct drm_device *dev);
 };
 /**
  * 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);
 	int (*dma_quiescent) (struct drm_device *);
 	int (*context_dtor) (struct drm_device *dev, int context);
 	/**
 	 * 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 \c drm_device_is_agp.  Typically used to determine if a
 	 * card is really attached to AGP or not.
+	 *
 	 * \param dev  DRM device handle
+	 *
 	 * \returns
 	 * One of three values is returned depending on whether or not the
 	 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
 	 * (return of 1), or may or may not be AGP (return of 2).
 	 */
 	int (*device_is_agp) (struct drm_device *dev);
 	/**
 	 * Called by vblank timestamping code.
+	 *
 	 * Return the current display scanout position from a crtc.
+	 *
 	 * \param dev  DRM device.
 	 * \param crtc Id of the crtc to query.
 	 * \param *vpos Target location for current vertical scanout position.
 	 * \param *hpos Target location for current horizontal scanout position.
+	 *
 	 * 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,
 				     int *vpos, int *hpos);
 	/**
 	 * 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) (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 (*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);
 	/**
 	 * master_set is called whenever the minor master is set.
 	 * master_drop is called whenever the minor master is dropped.
 	 */
 	int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
 			  bool from_open);
 	void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
 			    bool from_release);
 	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);
 	int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
 	void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
 	/* prime: */
 	/* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
 	int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
 				uint32_t handle, uint32_t flags, int *prime_fd);
 	/* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
 	int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
 				int prime_fd, uint32_t *handle);
 	/* export GEM -> dmabuf */
 	struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
 				struct drm_gem_object *obj, int flags);
 	/* import dmabuf -> GEM */
 	struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
 				struct dma_buf *dma_buf);
 	/* vga arb irq handler */
 	void (*vgaarb_irq)(struct drm_device *dev, bool state);
 	/* dumb alloc support */
 	int (*dumb_create)(struct drm_file *file_priv,
 			   struct drm_device *dev,
 			   struct drm_mode_create_dumb *args);
 	int (*dumb_map_offset)(struct drm_file *file_priv,
 			       struct drm_device *dev, uint32_t handle,
 			       uint64_t *offset);
 	int (*dumb_destroy)(struct drm_file *file_priv,
 			    struct drm_device *dev,
 			    uint32_t handle);
 	/* Driver private ops for this object */
 	const 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;
 	const struct file_operations *fops;
 	union {
 		struct pci_driver *pci;
 		struct platform_device *platform_device;
 		struct usb_driver *usb;
 	} kdriver;
 	struct drm_bus *bus;
 	/* 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
 #ifndef __NetBSD__
 /**
  * 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;
 };
 #endif
 /**
  * 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 */
 #ifdef __NetBSD__
 	device_t kdev;			/* NetBSD device */
 #else
 	struct device kdev;		/**< Linux device */
 #endif
 	struct drm_device *dev;
 #ifndef __NetBSD__
 	struct proc_dir_entry *proc_root;  /**< proc directory entry */
 	struct drm_info_node proc_nodes;
 	struct dentry *debugfs_root;
 	struct list_head debugfs_list;
 	struct mutex debugfs_lock; /* Protects debugfs_list. */
 #endif
 	struct drm_master *master; /* currently active master for this node */
 	struct list_head master_list;
 	struct drm_mode_group mode_group;
 };
 /* mode specified on the command line */
 struct drm_cmdline_mode {
 	bool specified;
 	bool refresh_specified;
 	bool bpp_specified;
 	int xres, yres;
 	int bpp;
 	int refresh;
 	bool rb;
 	bool interlace;
 	bool cvt;
 	bool margins;
 	enum drm_connector_force force;
 };
 struct drm_pending_vblank_event {
 	struct drm_pending_event base;
 	int pipe;
 	struct drm_event_vblank event;
 };
 /**
  * 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 support */
 	/*@{ */
 	struct drm_device_dma *dma;		/**< Optional pointer for DMA support */
 	/*@} */
 	/** \name Context support */
 	/*@{ */
 	int irq_enabled;		/**< True if irq handler is enabled */
 #ifdef __NetBSD__
 	struct drm_bus_irq_cookie *irq_cookie;
 #endif
 	__volatile__ long context_flag;	/**< Context swapping flag */
 	__volatile__ long interrupt_flag; /**< Interruption handler flag */
 	__volatile__ long dma_flag;	/**< DMA dispatch flag */
 #ifdef __NetBSD__
 	drm_waitqueue_t context_wait;	/**< Processes waiting on ctx switch */
 #else
 	wait_queue_head_t context_wait;	/**< Processes waiting on ctx switch */
 #endif
 	int last_checked;		/**< Last context checked for DMA */
 	int last_context;		/**< Last current context */
 #ifndef __NetBSD__
 	/* XXX Nobody seems to use this.  */
 	unsigned long last_switch;	/**< jiffies at last context switch */
 #endif
 	/*@} */
 	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;
 #ifdef __NetBSD__
 	drm_waitqueue_t *vbl_queue;     /**< VBLANK wait queue */
 #else
 	wait_queue_head_t *vbl_queue;   /**< VBLANK wait queue */
 #endif
 	atomic_t *_vblank_count;        /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
 	struct timeval *_vblank_time;   /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
 	spinlock_t vblank_time_lock;    /**< Protects vblank count and time updates during vblank enable/disable */
 	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 */
 	/**
 	 * List of events
 	 */
 	struct list_head vblank_event_list;
 	spinlock_t event_lock;
 	/*@} */
 	cycles_t ctx_start;
 	cycles_t lck_start;
 	struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
 #ifdef __NetBSD__
 	drm_waitqueue_t buf_readers;	/**< Processes waiting to read */
 	drm_waitqueue_t buf_writers;	/**< Processes waiting to ctx switch */
 #else
 	wait_queue_head_t buf_readers;	/**< Processes waiting to read */
 	wait_queue_head_t buf_writers;	/**< Processes waiting to ctx switch */
 #endif
 	struct drm_agp_head *agp;	/**< AGP data */
 	struct device *dev;             /**< Device structure */
 	struct pci_dev *pdev;		/**< PCI device structure */
 	int pci_vendor;			/**< PCI vendor id */
 	int pci_device;			/**< PCI device id */
 #ifdef __alpha__
 	struct pci_controller *hose;
 #endif
 	struct platform_device *platformdev; /**< Platform device struture */
 	struct usb_device *usbdev;
 #ifdef __NetBSD__
 	bus_space_tag_t bst;
 	struct drm_bus_map *bus_maps;
 	size_t bus_nmaps;
 	/* XXX What does this have to do with AGP?  */
 	struct drm_bus_map *agp_maps;
 	size_t agp_nmaps;
 	bus_dma_tag_t dmat;
 #endif
 	struct drm_sg_mem *sg;	/**< Scatter gather memory */
 	unsigned 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 */
 #ifndef __NetBSD__
 	sigset_t sigmask;
 #endif
 	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 */
         struct drm_mode_config mode_config;	/**< Current mode config */
 	/** \name GEM information */
 	/*@{ */
 	spinlock_t object_name_lock;
 	struct idr object_name_idr;
 	/*@} */
 	int switch_power_state;
 	atomic_t unplugged; /* device has been unplugged or gone away */
 };
 #define DRM_SWITCH_POWER_ON 0
 #define DRM_SWITCH_POWER_OFF 1
 #define DRM_SWITCH_POWER_CHANGING 2
 static __inline__ int drm_core_check_feature(struct drm_device *dev,
 					     int feature)
+{
 	return ((dev->driver->driver_features & feature) ? 1 : 0);
+}
 static inline int drm_dev_to_irq(struct drm_device *dev)
+{
 	return dev->driver->bus->get_irq(dev);
+}
 #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;
+}
 #endif
 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 */
 /*@{*/
 #ifndef __NetBSD__		/* XXX temporary measure 20130212 */
 				/* 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);
 #endif
 				/* Device support (drm_fops.h) */
 extern struct mutex drm_global_mutex;
 #ifdef __NetBSD__
 extern int drm_open_file(struct drm_file *, void *, struct drm_minor *);
 extern int drm_close_file(struct drm_file *);
 #if 0				/* XXX drm event poll */
 extern int drm_dequeue_event(struct drm_file *, size_t,
     struct drm_pending_event **);
 #endif
 extern void drm_lastclose(struct drm_device *);
 #else
 extern int drm_open(struct inode *inode, struct file *filp);
 extern int drm_stub_open(struct inode *inode, struct file *filp);
 extern int drm_fasync(int fd, struct file *filp, int on);
 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);
 #endif
 #ifndef __NetBSD__
 				/* 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);
 #endif
 				/* Memory management support (drm_memory.h) */
 #include <drm/drm_memory.h>
 #ifndef __NetBSD__
 extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
 				       struct page **pages,
 				       unsigned long num_pages,
 				       uint32_t gtt_offset,
 				       uint32_t type);
 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
 #endif
 #ifdef __NetBSD__
 extern void *drm_ioremap(struct drm_device *dev, struct drm_local_map *map);
 extern void drm_iounmap(struct drm_device *dev, struct drm_local_map *map);
 #endif
 				/* 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_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);
 				/* Context IOCTL support (drm_context.h) */
 extern int drm_resctx(struct drm_device *dev, void *data,
 		      struct drm_file *file_priv);
 extern int drm_addctx(struct drm_device *dev, void *data,
 		      struct drm_file *file_priv);
 extern int drm_modctx(struct drm_device *dev, void *data,
 		      struct drm_file *file_priv);
 extern int drm_getctx(struct drm_device *dev, void *data,
 		      struct drm_file *file_priv);
 extern int drm_switchctx(struct drm_device *dev, void *data,
 			 struct drm_file *file_priv);
 extern int drm_newctx(struct drm_device *dev, void *data,
 		      struct drm_file *file_priv);
 extern int drm_rmctx(struct drm_device *dev, void *data,
 		     struct drm_file *file_priv);
 extern int drm_ctxbitmap_init(struct drm_device *dev);
 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
 extern int drm_setsareactx(struct drm_device *dev, void *data,
 			   struct drm_file *file_priv);
 extern int drm_getsareactx(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);
 #ifndef __NetBSD__		/* XXX temporary measure 20130212 */
 /* 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(char *addr, unsigned long length);
 #endif
 				/* 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_order(unsigned long size);
 				/* DMA support (drm_dma.h) */
 extern int drm_dma_setup(struct drm_device *dev);
 extern void drm_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);
 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 int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
 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 void drm_vblank_off(struct drm_device *dev, int 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,
 						 struct drm_crtc *refcrtc);
 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
 extern bool
 drm_mode_parse_command_line_for_connector(const char *mode_option,
 					  struct drm_connector *connector,
 					  struct drm_cmdline_mode *mode);
 extern struct drm_display_mode *
 drm_mode_create_from_cmdline_mode(struct drm_device *dev,
 				  struct drm_cmdline_mode *cmd);
 /* 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) */
 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
 extern int drm_agp_acquire(struct drm_device *dev);
 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
 				 struct drm_file *file_priv);
 extern int drm_agp_release(struct drm_device *dev);
 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
 				 struct drm_file *file_priv);
 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
 				struct drm_file *file_priv);
 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
 			struct drm_file *file_priv);
 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
 			 struct drm_file *file_priv);
 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
 			struct drm_file *file_priv);
 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
 			  struct drm_file *file_priv);
 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,