Merge branch 'linus' into core/softlockup

Conflicts:

	kernel/softlockup.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1154 insertions, 0 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
new file mode 100644
index 000000000000..1c1b13e29223
--- /dev/null
+++ b/include/drm/drmP.h
@@ -0,0 +1,1154 @@
+/**
+ * \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.
+ * 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_
+
+/* If you want the memory alloc debug functionality, change define below */
+/* #define DEBUG_MEMORY */
+
+#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/module.h>
+#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/pci.h>
+#include <linux/jiffies.h>
+#include <linux/smp_lock.h>	/* For (un)lock_kernel */
+#include <linux/dma-mapping.h>
+#include <linux/mm.h>
+#include <linux/cdev.h>
+#include <linux/mutex.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 <asm/pgalloc.h>
+#include "drm.h"
+
+#include <linux/idr.h>
+
+#define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
+#define __OS_HAS_MTRR (defined(CONFIG_MTRR))
+
+struct drm_file;
+struct drm_device;
+
+#include "drm_os_linux.h"
+#include "drm_hashtab.h"
+
+/***********************************************************************/
+/** \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
+
+/***********************************************************************/
+/** \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_MEM_DMA	   0
+#define DRM_MEM_SAREA	   1
+#define DRM_MEM_DRIVER	   2
+#define DRM_MEM_MAGIC	   3
+#define DRM_MEM_IOCTLS	   4
+#define DRM_MEM_MAPS	   5
+#define DRM_MEM_VMAS	   6
+#define DRM_MEM_BUFS	   7
+#define DRM_MEM_SEGS	   8
+#define DRM_MEM_PAGES	   9
+#define DRM_MEM_FILES	  10
+#define DRM_MEM_QUEUES	  11
+#define DRM_MEM_CMDS	  12
+#define DRM_MEM_MAPPINGS  13
+#define DRM_MEM_BUFLISTS  14
+#define DRM_MEM_AGPLISTS  15
+#define DRM_MEM_TOTALAGP  16
+#define DRM_MEM_BOUNDAGP  17
+#define DRM_MEM_CTXBITMAP 18
+#define DRM_MEM_STUB      19
+#define DRM_MEM_SGLISTS   20
+#define DRM_MEM_CTXLIST   21
+#define DRM_MEM_MM        22
+#define DRM_MEM_HASHTAB   23
+
+#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
+#define DRM_MAP_HASH_OFFSET 0x10000000
+
+/*@}*/
+
+/***********************************************************************/
+/** \name Macros to make printk easier */
+/*@{*/
+
+/**
+ * Error output.
+ *
+ * \param fmt printf() like format string.
+ * \param arg arguments
+ */
+#define DRM_ERROR(fmt, arg...) \
+	printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)
+
+/**
+ * Memory error output.
+ *
+ * \param area memory area where the error occurred.
+ * \param fmt printf() like format string.
+ * \param arg arguments
+ */
+#define DRM_MEM_ERROR(area, fmt, arg...) \
+	printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \
+	       drm_mem_stats[area].name , ##arg)
+
+#define DRM_INFO(fmt, arg...)  printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
+
+/**
+ * Debug output.
+ *
+ * \param fmt printf() like format string.
+ * \param arg arguments
+ */
+#if DRM_DEBUG_CODE
+#define DRM_DEBUG(fmt, arg...)						\
+	do {								\
+		if ( drm_debug )			\
+			printk(KERN_DEBUG				\
+			       "[" DRM_NAME ":%s] " fmt ,	\
+			       __func__ , ##arg);			\
+	} while (0)
+#else
+#define DRM_DEBUG(fmt, arg...)		 do { } while (0)
+#endif
+
+#define DRM_PROC_LIMIT (PAGE_SIZE-80)
+
+#define DRM_PROC_PRINT(fmt, arg...)					\
+   len += sprintf(&buf[len], fmt , ##arg);				\
+   if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
+
+#define DRM_PROC_PRINT_RET(ret, fmt, arg...)				\
+   len += sprintf(&buf[len], fmt , ##arg);				\
+   if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
+
+/*@}*/
+
+/***********************************************************************/
+/** \name Internal types and structures */
+/*@{*/
+
+#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
+
+#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
+#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
+#define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
+
+#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
+/**
+ * Get the private SAREA mapping.
+ *
+ * \param _dev DRM device.
+ * \param _ctx context number.
+ * \param _map output mapping.
+ */
+#define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do {	\
+	(_map) = (_dev)->context_sareas[_ctx];		\
+} while(0)
+
+/**
+ * Test that the hardware lock is held by the caller, returning otherwise.
+ *
+ * \param dev DRM device.
+ * \param filp file pointer of the caller.
+ */
+#define LOCK_TEST_WITH_RETURN( dev, file_priv )				\
+do {									\
+	if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||		\
+	     dev->lock.file_priv != file_priv )	{			\
+		DRM_ERROR( "%s called without lock held, held  %d owner %p %p\n",\
+			   __func__, _DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ),\
+			   dev->lock.file_priv, file_priv );		\
+		return -EINVAL;						\
+	}								\
+} while (0)
+
+/**
+ * Copy and IOCTL return string to user space
+ */
+#define DRM_COPY( name, value )						\
+	len = strlen( value );						\
+	if ( len > name##_len ) len = name##_len;			\
+	name##_len = strlen( value );					\
+	if ( len && name ) {						\
+		if ( copy_to_user( name, value, len ) )			\
+			return -EFAULT;					\
+	}
+
+/**
+ * Ioctl function type.
+ *
+ * \param inode device inode.
+ * \param file_priv DRM file private pointer.
+ * \param cmd command.
+ * \param arg argument.
+ */
+typedef int drm_ioctl_t(struct drm_device *dev, void *data,
+			struct drm_file *file_priv);
+
+typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
+			       unsigned long arg);
+
+#define DRM_AUTH	0x1
+#define	DRM_MASTER	0x2
+#define DRM_ROOT_ONLY	0x4
+
+struct drm_ioctl_desc {
+	unsigned int cmd;
+	drm_ioctl_t *func;
+	int flags;
+};
+
+/**
+ * Creates a driver or general drm_ioctl_desc array entry for the given
+ * ioctl, for use by drm_ioctl().
+ */
+#define DRM_IOCTL_DEF(ioctl, func, flags) \
+	[DRM_IOCTL_NR(ioctl)] = {ioctl, func, flags}
+
+struct drm_magic_entry {
+	struct list_head head;
+	struct drm_hash_item hash_item;
+	struct drm_file *priv;
+};
+
+struct drm_vma_entry {
+	struct list_head head;
+	struct vm_area_struct *vma;
+	pid_t pid;
+};
+
+/**
+ * DMA buffer.
+ */
+struct drm_buf {
+	int idx;		       /**< Index into master buflist */
+	int total;		       /**< Buffer size */
+	int order;		       /**< log-base-2(total) */
+	int used;		       /**< Amount of buffer in use (for DMA) */
+	unsigned long offset;	       /**< Byte offset (used internally) */
+	void *address;		       /**< Address of buffer */
+	unsigned long bus_address;     /**< Bus address of buffer */
+	struct drm_buf *next;	       /**< Kernel-only: used for free list */
+	__volatile__ int waiting;      /**< On kernel DMA queue */
+	__volatile__ int pending;      /**< On hardware DMA queue */
+	wait_queue_head_t dma_wait;    /**< Processes waiting */
+	struct drm_file *file_priv;    /**< Private of holding file descr */
+	int context;		       /**< Kernel queue for this buffer */
+	int while_locked;	       /**< Dispatch this buffer while locked */
+	enum {
+		DRM_LIST_NONE = 0,
+		DRM_LIST_FREE = 1,
+		DRM_LIST_WAIT = 2,
+		DRM_LIST_PEND = 3,
+		DRM_LIST_PRIO = 4,
+		DRM_LIST_RECLAIM = 5
+	} list;			       /**< Which list we're on */
+
+	int dev_priv_size;		 /**< Size of buffer private storage */
+	void *dev_private;		 /**< Per-buffer private storage */
+};
+
+/** bufs is one longer than it has to be */
+struct drm_waitlist {
+	int count;			/**< Number of possible buffers */
+	struct drm_buf **bufs;		/**< List of pointers to buffers */
+	struct drm_buf **rp;			/**< Read pointer */
+	struct drm_buf **wp;			/**< Write pointer */
+	struct drm_buf **end;		/**< End pointer */
+	spinlock_t read_lock;
+	spinlock_t write_lock;
+};
+
+struct drm_freelist {
+	int initialized;	       /**< Freelist in use */
+	atomic_t count;		       /**< Number of free buffers */
+	struct drm_buf *next;	       /**< End pointer */
+
+	wait_queue_head_t waiting;     /**< Processes waiting on free bufs */
+	int low_mark;		       /**< Low water mark */
+	int high_mark;		       /**< High water mark */
+	atomic_t wfh;		       /**< If waiting for high mark */
+	spinlock_t lock;
+};
+
+typedef struct drm_dma_handle {
+	dma_addr_t busaddr;
+	void *vaddr;
+	size_t size;
+} drm_dma_handle_t;
+
+/**
+ * Buffer entry.  There is one of this for each buffer size order.
+ */
+struct drm_buf_entry {
+	int buf_size;			/**< size */
+	int buf_count;			/**< number of buffers */
+	struct drm_buf *buflist;		/**< buffer list */
+	int seg_count;
+	int page_order;
+	struct drm_dma_handle **seglist;
+
+	struct drm_freelist freelist;
+};
+
+/** File private data */
+struct drm_file {
+	int authenticated;
+	int master;
+	pid_t pid;
+	uid_t uid;
+	drm_magic_t magic;
+	unsigned long ioctl_count;
+	struct list_head lhead;
+	struct drm_minor *minor;
+	int remove_auth_on_close;
+	unsigned long lock_count;
+	struct file *filp;
+	void *driver_priv;
+};
+
+/** Wait queue */
+struct drm_queue {
+	atomic_t use_count;		/**< Outstanding uses (+1) */
+	atomic_t finalization;		/**< Finalization in progress */
+	atomic_t block_count;		/**< Count of processes waiting */
+	atomic_t block_read;		/**< Queue blocked for reads */
+	wait_queue_head_t read_queue;	/**< Processes waiting on block_read */
+	atomic_t block_write;		/**< Queue blocked for writes */
+	wait_queue_head_t write_queue;	/**< Processes waiting on block_write */
+	atomic_t total_queued;		/**< Total queued statistic */
+	atomic_t total_flushed;		/**< Total flushes statistic */
+	atomic_t total_locks;		/**< Total locks statistics */
+	enum drm_ctx_flags flags;	/**< Context preserving and 2D-only */
+	struct drm_waitlist waitlist;	/**< Pending buffers */
+	wait_queue_head_t flush_queue;	/**< Processes waiting until flush */
+};
+
+/**
+ * Lock data.
+ */
+struct drm_lock_data {
+	struct drm_hw_lock *hw_lock;	/**< Hardware lock */
+	/** Private of lock holder's file (NULL=kernel) */
+	struct drm_file *file_priv;
+	wait_queue_head_t lock_queue;	/**< Queue of blocked processes */
+	unsigned long lock_time;	/**< Time of last lock in jiffies */
+	spinlock_t spinlock;
+	uint32_t kernel_waiters;
+	uint32_t user_waiters;
+	int idle_has_lock;
+};
+
+/**
+ * DMA data.
+ */
+struct drm_device_dma {
+
+	struct drm_buf_entry bufs[DRM_MAX_ORDER + 1];	/**< buffers, grouped by their size order */
+	int buf_count;			/**< total number of buffers */
+	struct drm_buf **buflist;		/**< Vector of pointers into drm_device_dma::bufs */
+	int seg_count;
+	int page_count;			/**< number of pages */
+	unsigned long *pagelist;	/**< page list */
+	unsigned long byte_count;
+	enum {
+		_DRM_DMA_USE_AGP = 0x01,
+		_DRM_DMA_USE_SG = 0x02,
+		_DRM_DMA_USE_FB = 0x04,
+		_DRM_DMA_USE_PCI_RO = 0x08
+	} flags;
+
+};
+
+/**
+ * AGP memory entry.  Stored as a doubly linked list.
+ */
+struct drm_agp_mem {
+	unsigned long handle;		/**< handle */
+	DRM_AGP_MEM *memory;
+	unsigned long bound;		/**< address */
+	int pages;
+	struct list_head head;
+};
+
+/**
+ * AGP data.
+ *
+ * \sa drm_agp_init() and drm_device::agp.
+ */
+struct drm_agp_head {
+	DRM_AGP_KERN agp_info;		/**< AGP device information */
+	struct list_head memory;
+	unsigned long mode;		/**< AGP mode */
+	struct agp_bridge_data *bridge;
+	int enabled;			/**< whether the AGP bus as been enabled */
+	int acquired;			/**< whether the AGP device has been acquired */
+	unsigned long base;
+	int agp_mtrr;
+	int cant_use_aperture;
+	unsigned long page_mask;
+};
+
+/**
+ * Scatter-gather memory.
+ */
+struct drm_sg_mem {
+	unsigned long handle;
+	void *virtual;
+	int pages;
+	struct page **pagelist;
+	dma_addr_t *busaddr;
+};
+
+struct drm_sigdata {
+	int context;
+	struct drm_hw_lock *lock;
+};
+
+
+/*
+ * Generic memory manager structs
+ */
+
+struct drm_mm_node {
+	struct list_head fl_entry;
+	struct list_head ml_entry;
+	int free;
+	unsigned long start;
+	unsigned long size;
+	struct drm_mm *mm;
+	void *private;
+};
+
+struct drm_mm {
+	struct list_head fl_entry;
+	struct list_head ml_entry;
+};
+
+
+/**
+ * Mappings list
+ */
+struct drm_map_list {
+	struct list_head head;		/**< list head */
+	struct drm_hash_item hash;
+	struct drm_map *map;			/**< mapping */
+	uint64_t user_token;
+};
+
+typedef struct drm_map drm_local_map_t;
+
+/**
+ * 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 */
+};
+
+struct drm_vbl_sig {
+	struct list_head head;
+	unsigned int sequence;
+	struct siginfo info;
+	struct task_struct *task;
+};
+
+/* 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;
+	drm_local_map_t mapping;
+	int table_size;
+};
+
+/**
+ * DRM driver structure. This structure represent the common code for
+ * a family of cards. There will one drm_device for each card present
+ * in this family
+ */
+struct drm_driver {
+	int (*load) (struct drm_device *, unsigned long flags);
+	int (*firstopen) (struct drm_device *);
+	int (*open) (struct drm_device *, struct drm_file *);
+	void (*preclose) (struct drm_device *, struct drm_file *file_priv);
+	void (*postclose) (struct drm_device *, struct drm_file *);
+	void (*lastclose) (struct drm_device *);
+	int (*unload) (struct drm_device *);
+	int (*suspend) (struct drm_device *, pm_message_t state);
+	int (*resume) (struct drm_device *);
+	int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
+	void (*dma_ready) (struct drm_device *);
+	int (*dma_quiescent) (struct drm_device *);
+	int (*context_ctor) (struct drm_device *dev, int context);
+	int (*context_dtor) (struct drm_device *dev, int context);
+	int (*kernel_context_switch) (struct drm_device *dev, int old,
+				      int new);
+	void (*kernel_context_switch_unlock) (struct drm_device *dev);
+	int (*vblank_wait) (struct drm_device *dev, unsigned int *sequence);
+	int (*vblank_wait2) (struct drm_device *dev, unsigned int *sequence);
+	int (*dri_library_name) (struct drm_device *dev, char *buf);
+
+	/**
+	 * Called by \c drm_device_is_agp.  Typically used to determine if a
+	 * card is really attached to AGP or not.
+	 *
+	 * \param dev  DRM device handle
+	 *
+	 * \returns
+	 * One of three values is returned depending on whether or not the
+	 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
+	 * (return of 1), or may or may not be AGP (return of 2).
+	 */
+	int (*device_is_agp) (struct drm_device *dev);
+
+	/* these have to be filled in */
+
+	irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
+	void (*irq_preinstall) (struct drm_device *dev);
+	void (*irq_postinstall) (struct drm_device *dev);
+	void (*irq_uninstall) (struct drm_device *dev);
+	void (*reclaim_buffers) (struct drm_device *dev,
+				 struct drm_file * file_priv);
+	void (*reclaim_buffers_locked) (struct drm_device *dev,
+					struct drm_file *file_priv);
+	void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
+					    struct drm_file *file_priv);
+	unsigned long (*get_map_ofs) (struct drm_map * map);
+	unsigned long (*get_reg_ofs) (struct drm_device *dev);
+	void (*set_version) (struct drm_device *dev,
+			     struct drm_set_version *sv);
+
+	int major;
+	int minor;
+	int patchlevel;
+	char *name;
+	char *desc;
+	char *date;
+
+	u32 driver_features;
+	int dev_priv_size;
+	struct drm_ioctl_desc *ioctls;
+	int num_ioctls;
+	struct file_operations fops;
+	struct pci_driver pci_driver;
+};
+
+#define DRM_MINOR_UNASSIGNED 0
+#define DRM_MINOR_LEGACY 1
+
+/**
+ * DRM minor structure. This structure represents a drm minor number.
+ */
+struct drm_minor {
+	int index;			/**< Minor device number */
+	int type;                       /**< Control or render */
+	dev_t device;			/**< Device number for mknod */
+	struct device kdev;		/**< Linux device */
+	struct drm_device *dev;
+	struct proc_dir_entry *dev_root;  /**< proc directory entry */
+};
+
+/**
+ * DRM device structure. This structure represent a complete card that
+ * may contain multiple heads.
+ */
+struct drm_device {
+	char *unique;			/**< Unique identifier: e.g., busid */
+	int unique_len;			/**< Length of unique field */
+	char *devname;			/**< For /proc/interrupts */
+	int if_version;			/**< Highest interface version set */
+
+	int blocked;			/**< Blocked due to VC switch? */
+
+	/** \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];
+	/*@} */
+
+	/** \name Authentication */
+	/*@{ */
+	struct list_head filelist;
+	struct drm_open_hash magiclist;	/**< magic hash table */
+	struct list_head magicfree;
+	/*@} */
+
+	/** \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) */
+	struct drm_lock_data lock;	/**< Information on hardware lock */
+	/*@} */
+
+	/** \name DMA queues (contexts) */
+	/*@{ */
+	int queue_count;		/**< Number of active DMA queues */
+	int queue_reserved;		  /**< Number of reserved DMA queues */
+	int queue_slots;		/**< Actual length of queuelist */
+	struct drm_queue **queuelist;	/**< Vector of pointers to DMA queues */
+	struct drm_device_dma *dma;		/**< Optional pointer for DMA support */
+	/*@} */
+
+	/** \name Context support */
+	/*@{ */
+	int irq;			/**< Interrupt used by board */
+	int irq_enabled;		/**< True if irq handler is enabled */
+	__volatile__ long context_flag;	/**< Context swapping flag */
+	__volatile__ long interrupt_flag; /**< Interruption handler flag */
+	__volatile__ long dma_flag;	/**< DMA dispatch flag */
+	struct timer_list timer;	/**< Timer for delaying ctx switch */
+	wait_queue_head_t context_wait;	/**< Processes waiting on ctx switch */
+	int last_checked;		/**< Last context checked for DMA */
+	int last_context;		/**< Last current context */
+	unsigned long last_switch;	/**< jiffies at last context switch */
+	/*@} */
+
+	struct work_struct work;
+	/** \name VBLANK IRQ support */
+	/*@{ */
+
+	wait_queue_head_t vbl_queue;	/**< VBLANK wait queue */
+	atomic_t vbl_received;
+	atomic_t vbl_received2;		/**< number of secondary VBLANK interrupts */
+	spinlock_t vbl_lock;
+	struct list_head vbl_sigs;		/**< signal list to send on VBLANK */
+	struct list_head vbl_sigs2;	/**< signals to send on secondary VBLANK */
+	unsigned int vbl_pending;
+	spinlock_t tasklet_lock;	/**< For drm_locked_tasklet */
+	void (*locked_tasklet_func)(struct drm_device *dev);
+
+	/*@} */
+	cycles_t ctx_start;
+	cycles_t lck_start;
+
+	struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
+	wait_queue_head_t buf_readers;	/**< Processes waiting to read */
+	wait_queue_head_t buf_writers;	/**< Processes waiting to ctx switch */
+
+	struct drm_agp_head *agp;	/**< AGP data */
+
+	struct pci_dev *pdev;		/**< PCI device structure */
+	int pci_vendor;			/**< PCI vendor id */
+	int pci_device;			/**< PCI device id */
+#ifdef __alpha__
+	struct pci_controller *hose;
+#endif
+	struct drm_sg_mem *sg;	/**< Scatter gather memory */
+	void *dev_private;		/**< device private data */
+	struct drm_sigdata sigdata;	   /**< For block_all_signals */
+	sigset_t sigmask;
+
+	struct drm_driver *driver;
+	drm_local_map_t *agp_buffer_map;
+	unsigned int agp_buffer_token;
+	struct drm_minor *primary;		/**< render type primary screen head */
+
+	/** \name Drawable information */
+	/*@{ */
+	spinlock_t drw_lock;
+	struct idr drw_idr;
+	/*@} */
+};
+
+static __inline__ int drm_core_check_feature(struct drm_device *dev,
+					     int feature)
+{
+	return ((dev->driver->driver_features & feature) ? 1 : 0);
+}
+
+#ifdef __alpha__
+#define drm_get_pci_domain(dev) dev->hose->index
+#else
+#define drm_get_pci_domain(dev) 0
+#endif
+
+#if __OS_HAS_AGP
+static inline int drm_core_has_AGP(struct drm_device *dev)
+{
+	return drm_core_check_feature(dev, DRIVER_USE_AGP);
+}
+#else
+#define drm_core_has_AGP(dev) (0)
+#endif
+
+#if __OS_HAS_MTRR
+static inline int drm_core_has_MTRR(struct drm_device *dev)
+{
+	return drm_core_check_feature(dev, DRIVER_USE_MTRR);
+}
+
+#define DRM_MTRR_WC		MTRR_TYPE_WRCOMB
+
+static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
+			       unsigned int flags)
+{
+	return mtrr_add(offset, size, flags, 1);
+}
+
+static inline int drm_mtrr_del(int handle, unsigned long offset,
+			       unsigned long size, unsigned int flags)
+{
+	return mtrr_del(handle, offset, size);
+}
+
+#else
+#define drm_core_has_MTRR(dev) (0)
+
+#define DRM_MTRR_WC		0
+
+static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
+			       unsigned int flags)
+{
+	return 0;
+}
+
+static inline int drm_mtrr_del(int handle, unsigned long offset,
+			       unsigned long size, unsigned int flags)
+{
+	return 0;
+}
+#endif
+
+/******************************************************************/
+/** \name Internal function definitions */
+/*@{*/
+
+				/* Driver support (drm_drv.h) */
+extern int drm_init(struct drm_driver *driver);
+extern void drm_exit(struct drm_driver *driver);
+extern int drm_ioctl(struct inode *inode, 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);
+
+				/* Device support (drm_fops.h) */
+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 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 unsigned long drm_core_get_map_ofs(struct drm_map * map);
+extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
+extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
+
+				/* Memory management support (drm_memory.h) */
+#include "drm_memory.h"
+extern void drm_mem_init(void);
+extern int drm_mem_info(char *buf, char **start, off_t offset,
+			int request, int *eof, void *data);
+extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
+
+extern DRM_AGP_MEM *drm_alloc_agp(struct drm_device *dev, int pages, u32 type);
+extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
+extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
+extern int drm_unbind_agp(DRM_AGP_MEM * handle);
+
+				/* 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_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);
+
+				/* Drawable IOCTL support (drm_drawable.h) */
+extern int drm_adddraw(struct drm_device *dev, void *data,
+		       struct drm_file *file_priv);
+extern int drm_rmdraw(struct drm_device *dev, void *data,
+		      struct drm_file *file_priv);
+extern int drm_update_drawable_info(struct drm_device *dev, void *data,
+				    struct drm_file *file_priv);
+extern struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev,
+						  drm_drawable_t id);
+extern void drm_drawable_free_all(struct drm_device *dev);
+
+				/* 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);
+
+				/* 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_take(struct drm_lock_data *lock_data, unsigned int context);
+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, unsigned int offset,
+		      unsigned int size, enum drm_map_type type,
+		      enum drm_map_flags flags, drm_local_map_t ** 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, drm_local_map_t *map);
+extern int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t *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);
+extern unsigned long drm_get_resource_start(struct drm_device *dev,
+					    unsigned int resource);
+extern unsigned long drm_get_resource_len(struct drm_device *dev,
+					  unsigned int resource);
+
+				/* 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 irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
+extern int drm_irq_uninstall(struct drm_device *dev);
+extern void drm_driver_irq_preinstall(struct drm_device *dev);
+extern void drm_driver_irq_postinstall(struct drm_device *dev);
+extern void drm_driver_irq_uninstall(struct drm_device *dev);
+
+extern int drm_wait_vblank(struct drm_device *dev, void *data,
+			   struct drm_file *file_priv);
+extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
+extern void drm_vbl_send_signals(struct drm_device *dev);
+extern void drm_locked_tasklet(struct drm_device *dev, void(*func)(struct drm_device*));
+
+				/* 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,
+			struct drm_file *file_priv);
+extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge, size_t pages, u32 type);
+extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
+extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
+extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
+
+				/* Stub support (drm_stub.h) */
+extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
+		       struct drm_driver *driver);
+extern int drm_put_dev(struct drm_device *dev);
+extern int drm_put_minor(struct drm_minor **minor);
+extern unsigned int drm_debug;
+
+extern struct class *drm_class;
+extern struct proc_dir_entry *drm_proc_root;
+
+extern struct idr drm_minors_idr;
+
+extern drm_local_map_t *drm_getsarea(struct drm_device *dev);
+
+				/* Proc support (drm_proc.h) */
+extern int drm_proc_init(struct drm_minor *minor, int minor_id,
+			 struct proc_dir_entry *root);
+extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
+
+				/* Scatter Gather Support (drm_scatter.h) */
+extern void drm_sg_cleanup(struct drm_sg_mem * entry);
+extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
+			struct drm_file *file_priv);
+extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
+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, dma_addr_t maxaddr);
+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);
+
+			       /* 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 int drm_sysfs_device_add(struct drm_minor *minor);
+extern void drm_sysfs_device_remove(struct drm_minor *minor);
+
+/*
+ * Basic memory manager support (drm_mm.c)
+ */
+extern struct drm_mm_node *drm_mm_get_block(struct drm_mm_node * parent,
+				       unsigned long size,
+				       unsigned alignment);
+extern void drm_mm_put_block(struct drm_mm_node * cur);
+extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, unsigned long size,
+					 unsigned alignment, int best_match);
+extern int drm_mm_init(struct drm_mm *mm, unsigned long start, unsigned long size);
+extern void drm_mm_takedown(struct drm_mm *mm);
+extern int drm_mm_clean(struct drm_mm *mm);
+extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
+extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, unsigned long size);
+extern int drm_mm_add_space_to_tail(struct drm_mm *mm, unsigned long size);
+
+extern void drm_core_ioremap(struct drm_map *map, struct drm_device *dev);
+extern void drm_core_ioremap_wc(struct drm_map *map, struct drm_device *dev);
+extern void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev);
+
+static __inline__ struct drm_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__ int drm_device_is_agp(struct drm_device *dev)
+{
+	if (dev->driver->device_is_agp != NULL) {
+		int err = (*dev->driver->device_is_agp) (dev);
+
+		if (err != 2) {
+			return err;
+		}
+	}
+
+	return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
+}
+
+static __inline__ int drm_device_is_pcie(struct drm_device *dev)
+{
+	return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
+}
+
+static __inline__ void drm_core_dropmap(struct drm_map *map)
+{
+}
+
+#ifndef DEBUG_MEMORY
+/** Wrapper around kmalloc() */
+static __inline__ void *drm_alloc(size_t size, int area)
+{
+	return kmalloc(size, GFP_KERNEL);
+}
+
+/** Wrapper around kfree() */
+static __inline__ void drm_free(void *pt, size_t size, int area)
+{
+	kfree(pt);
+}
+
+/** Wrapper around kcalloc() */
+static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
+{
+	return kcalloc(nmemb, size, GFP_KERNEL);
+}
+#else
+extern void *drm_alloc(size_t size, int area);
+extern void drm_free(void *pt, size_t size, int area);
+extern void *drm_calloc(size_t nmemb, size_t size, int area);
+#endif
+
+/*@}*/
+
+#endif				/* __KERNEL__ */
+#endif