Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1073 insertions, 0 deletions

diff --git a/drivers/char/drm/drmP.h b/drivers/char/drm/drmP.h
new file mode 100644
index 000000000000..21f4c54e1a8d
--- /dev/null
+++ b/drivers/char/drm/drmP.h
@@ -0,0 +1,1073 @@
+/**
+ * \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/config.h>
+#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/version.h>
+#include <linux/jiffies.h>
+#include <linux/smp_lock.h>	/* For (un)lock_kernel */
+#include <linux/mm.h>
+#include <linux/cdev.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"
+
+#define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
+#define __OS_HAS_MTRR (defined(CONFIG_MTRR))
+
+#include "drm_os_linux.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
+
+/***********************************************************************/
+/** \name Begin the DRM... */
+/*@{*/
+
+#define DRM_DEBUG_CODE 2	  /**< Include debugging code if > 1, then
+				     also include looping detection. */
+
+#define DRM_HASH_SIZE	      16 /**< 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_BSZ		      1024 /**< Buffer size for /dev/drm? output */
+#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_MAX_CTXBITMAP (PAGE_SIZE * 8)
+	
+/*@}*/
+
+
+/***********************************************************************/
+/** \name Backward compatibility section */
+/*@{*/
+
+#ifndef MODULE_LICENSE
+#define MODULE_LICENSE(x) 
+#endif
+
+#ifndef preempt_disable
+#define preempt_disable()
+#define preempt_enable()
+#endif
+
+#ifndef pte_offset_map 
+#define pte_offset_map pte_offset
+#define pte_unmap(pte)
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,19)
+static inline struct page * vmalloc_to_page(void * vmalloc_addr)
+{
+	unsigned long addr = (unsigned long) vmalloc_addr;
+	struct page *page = NULL;
+	pgd_t *pgd = pgd_offset_k(addr);
+	pmd_t *pmd;
+	pte_t *ptep, pte;
+  
+	if (!pgd_none(*pgd)) {
+		pmd = pmd_offset(pgd, addr);
+		if (!pmd_none(*pmd)) {
+			preempt_disable();
+			ptep = pte_offset_map(pmd, addr);
+			pte = *ptep;
+			if (pte_present(pte))
+				page = pte_page(pte);
+			pte_unmap(ptep);
+			preempt_enable();
+		}
+	}
+	return page;
+}
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
+#define DRM_RPR_ARG(vma)
+#else
+#define DRM_RPR_ARG(vma) vma,
+#endif
+
+#define VM_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT)
+
+/*@}*/
+
+
+/***********************************************************************/
+/** \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 , __FUNCTION__ , ##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 , __FUNCTION__, \
+	       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 ,	\
+			       __FUNCTION__ , ##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) (sizeof(x)/sizeof(x[0]))
+#define DRM_MIN(a,b) ((a)<(b)?(a):(b))
+#define DRM_MAX(a,b) ((a)>(b)?(a):(b))
+
+#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, filp )				\
+do {									\
+	if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||		\
+	     dev->lock.filp != filp ) {				\
+		DRM_ERROR( "%s called without lock held\n",		\
+			   __FUNCTION__ );				\
+		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 filp file pointer.
+ * \param cmd command.
+ * \param arg argument.
+ */
+typedef int drm_ioctl_t( struct inode *inode, struct file *filp,
+			 unsigned int cmd, unsigned long arg );
+
+typedef struct drm_ioctl_desc {
+	drm_ioctl_t	     *func;
+	int		     auth_needed;
+	int		     root_only;
+} drm_ioctl_desc_t;
+
+typedef struct drm_devstate {
+	pid_t		  owner;	/**< X server pid holding x_lock */
+} drm_devstate_t;
+
+typedef struct drm_magic_entry {
+	drm_magic_t	       magic;
+	struct drm_file	       *priv;
+	struct drm_magic_entry *next;
+} drm_magic_entry_t;
+
+typedef struct drm_magic_head {
+	struct drm_magic_entry *head;
+	struct drm_magic_entry *tail;
+} drm_magic_head_t;
+
+typedef struct drm_vma_entry {
+	struct vm_area_struct *vma;
+	struct drm_vma_entry  *next;
+	pid_t		      pid;
+} drm_vma_entry_t;
+
+/**
+ * DMA buffer.
+ */
+typedef 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 file       *filp;       /**< Pointer to 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 */
+} drm_buf_t;
+
+
+/** bufs is one longer than it has to be */
+typedef struct drm_waitlist {
+	int		  count;	/**< Number of possible buffers */
+	drm_buf_t	  **bufs;	/**< List of pointers to buffers */
+	drm_buf_t	  **rp;		/**< Read pointer */
+	drm_buf_t	  **wp;		/**< Write pointer */
+	drm_buf_t	  **end;	/**< End pointer */
+	spinlock_t	  read_lock;
+	spinlock_t	  write_lock;
+} drm_waitlist_t;
+
+typedef struct drm_freelist {
+	int		  initialized; /**< Freelist in use */
+	atomic_t	  count;       /**< Number of free buffers */
+	drm_buf_t	  *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;
+} drm_freelist_t;
+
+/**
+ * Buffer entry.  There is one of this for each buffer size order.
+ */
+typedef struct drm_buf_entry {
+	int		  buf_size;	/**< size */
+	int		  buf_count;	/**< number of buffers */
+	drm_buf_t	  *buflist;	/**< buffer list */
+	int		  seg_count;
+	int		  page_order;
+	unsigned long	  *seglist;
+
+	drm_freelist_t	  freelist;
+} drm_buf_entry_t;
+
+/** File private data */
+typedef struct drm_file {
+	int		  authenticated;
+	int		  minor;
+	pid_t		  pid;
+	uid_t		  uid;
+	drm_magic_t	  magic;
+	unsigned long	  ioctl_count;
+	struct drm_file	  *next;
+	struct drm_file	  *prev;
+	struct drm_head   *head;
+	int 		  remove_auth_on_close;
+	unsigned long     lock_count;
+	void              *driver_priv;
+} drm_file_t;
+
+/** Wait queue */
+typedef 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 */
+#if 1
+	atomic_t	  total_queued;	/**< Total queued statistic */
+	atomic_t	  total_flushed;/**< Total flushes statistic */
+	atomic_t	  total_locks;	/**< Total locks statistics */
+#endif
+	drm_ctx_flags_t	  flags;	/**< Context preserving and 2D-only */
+	drm_waitlist_t	  waitlist;	/**< Pending buffers */
+	wait_queue_head_t flush_queue;	/**< Processes waiting until flush */
+} drm_queue_t;
+
+/**
+ * Lock data.
+ */
+typedef struct drm_lock_data {
+	drm_hw_lock_t	  *hw_lock;	/**< Hardware lock */
+	struct file       *filp;	/**< File descr of lock holder (0=kernel) */
+	wait_queue_head_t lock_queue;	/**< Queue of blocked processes */
+	unsigned long	  lock_time;	/**< Time of last lock in jiffies */
+} drm_lock_data_t;
+
+/**
+ * DMA data.
+ */
+typedef struct drm_device_dma {
+
+	drm_buf_entry_t	  bufs[DRM_MAX_ORDER+1];	/**< buffers, grouped by their size order */
+	int		  buf_count;	/**< total number of buffers */
+	drm_buf_t	  **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
+	} flags;
+
+} drm_device_dma_t;
+
+/** 
+ * AGP memory entry.  Stored as a doubly linked list.
+ */
+typedef struct drm_agp_mem {
+	unsigned long      handle;	/**< handle */
+	DRM_AGP_MEM        *memory;	
+	unsigned long      bound;	/**< address */
+	int                pages;
+	struct drm_agp_mem *prev;	/**< previous entry */
+	struct drm_agp_mem *next;	/**< next entry */
+} drm_agp_mem_t;
+
+/**
+ * AGP data.
+ *
+ * \sa drm_agp_init() and drm_device::agp.
+ */
+typedef struct drm_agp_head {
+	DRM_AGP_KERN       agp_info;	/**< AGP device information */
+	drm_agp_mem_t      *memory;	/**< memory entries */
+	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;
+} drm_agp_head_t;
+
+/**
+ * Scatter-gather memory.
+ */
+typedef struct drm_sg_mem {
+	unsigned long   handle;
+	void            *virtual;
+	int             pages;
+	struct page     **pagelist;
+	dma_addr_t	*busaddr;
+} drm_sg_mem_t;
+
+typedef struct drm_sigdata {
+	int           context;
+	drm_hw_lock_t *lock;
+} drm_sigdata_t;
+
+/**
+ * Mappings list
+ */
+typedef struct drm_map_list {
+	struct list_head	head;	/**< list head */
+	drm_map_t		*map;	/**< mapping */
+} drm_map_list_t;
+
+typedef drm_map_t drm_local_map_t;
+
+/**
+ * Context handle list
+ */
+typedef struct drm_ctx_list {
+	struct list_head	head;   /**< list head */
+	drm_context_t		handle; /**< context handle */
+	drm_file_t		*tag;   /**< associated fd private data */
+} drm_ctx_list_t;
+
+
+typedef struct drm_vbl_sig {
+	struct list_head	head;
+	unsigned int		sequence;
+	struct siginfo		info;
+	struct task_struct	*task;
+} drm_vbl_sig_t;
+
+
+/**
+ * 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_device;
+
+struct drm_driver {
+	int (*preinit)(struct drm_device *, unsigned long flags);
+	void (*prerelease)(struct drm_device *, struct file *filp);
+	void (*pretakedown)(struct drm_device *);
+	int (*postcleanup)(struct drm_device *);
+	int (*presetup)(struct drm_device *);
+	int (*postsetup)(struct drm_device *);
+ 	int (*dma_ioctl)( DRM_IOCTL_ARGS );
+	int (*open_helper)(struct drm_device *, drm_file_t *);
+	void (*free_filp_priv)(struct drm_device *, drm_file_t *);
+	void (*release)(struct drm_device *, struct file *filp);
+	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, drm_lock_t *lock);
+	int (*vblank_wait)(struct drm_device *dev, unsigned int *sequence);
+	/* these have to be filled in */
+ 	int (*postinit)(struct drm_device *, unsigned long flags);
+	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 file *filp);
+	unsigned long (*get_map_ofs)(drm_map_t *map);
+	unsigned long (*get_reg_ofs)(struct drm_device *dev);
+	void (*set_version)(struct drm_device *dev, drm_set_version_t *sv);
+ 	int (*version)(drm_version_t *version);
+	u32 driver_features;
+	int dev_priv_size;
+	drm_ioctl_desc_t *ioctls;
+	int num_ioctls;
+	struct file_operations fops;
+	struct pci_driver pci_driver;
+};
+
+/**
+ * DRM head structure. This structure represent a video head on a card
+ * that may contain multiple heads. Embed one per head of these in the
+ * private drm_device structure.
+ */
+typedef struct drm_head {
+	int minor;			/**< Minor device number */
+	struct drm_device *dev;
+	struct proc_dir_entry *dev_root;  /**< proc directory entry */
+	dev_t device;			/**< Device number for mknod */
+	struct class_device *dev_class;
+} drm_head_t;
+
+/**
+ * DRM device structure. This structure represent a complete card that
+ * may contain multiple heads.
+ */
+typedef 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 semaphore  struct_sem;	/**< 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;
+	drm_stat_type_t   types[15];
+	atomic_t          counts[15];
+	/*@}*/
+
+	/** \name Authentication */
+	/*@{*/
+	drm_file_t	  *file_first;	/**< file list head */
+	drm_file_t	  *file_last;	/**< file list tail */
+	drm_magic_head_t  magiclist[DRM_HASH_SIZE];	/**< magic hash table */
+	/*@}*/
+
+	/** \name Memory management */
+	/*@{*/
+	drm_map_list_t	  *maplist;	/**< Linked list of regions */
+	int		  map_count;	/**< Number of mappable regions */
+
+	/** \name Context handle management */
+	/*@{*/
+	drm_ctx_list_t	  *ctxlist;	/**< Linked list of context handles */
+	int		  ctx_count;	/**< Number of context handles */
+	struct semaphore  ctxlist_sem;	/**< For ctxlist */
+
+	drm_map_t	  **context_sareas; /**< per-context SAREA's */
+	int		  max_context;
+
+	drm_vma_entry_t	  *vmalist;	/**< List of vmas (for debugging) */
+	drm_lock_data_t	  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 */
+	drm_queue_t	  **queuelist;	/**< Vector of pointers to DMA queues */
+	drm_device_dma_t  *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;
+	spinlock_t        vbl_lock;
+	drm_vbl_sig_t     vbl_sigs;	/**< signal list to send on VBLANK */
+	unsigned int      vbl_pending;
+
+	/*@}*/
+	cycles_t	  ctx_start;
+	cycles_t	  lck_start;
+
+	char		  buf[DRM_BSZ]; /**< Output buffer */
+	char		  *buf_rp;	/**< Read pointer */
+	char		  *buf_wp;	/**< Write pointer */
+	char		  *buf_end;	/**< End pointer */
+	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 */
+
+	drm_agp_head_t    *agp;	/**< AGP data */
+
+	struct pci_dev    *pdev;	/**< PCI device structure */
+	int               pci_domain;	/**< PCI bus domain number */
+	int               pci_bus;	/**< PCI bus number */
+	int               pci_slot;	/**< PCI slot number */
+	int               pci_func;	/**< PCI function number */
+#ifdef __alpha__
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,3)
+	struct pci_controler *hose;
+#else
+	struct pci_controller *hose;
+#endif
+#endif
+	drm_sg_mem_t      *sg;  /**< Scatter gather memory */
+	unsigned long     *ctx_bitmap;	/**< context bitmap */
+	void		  *dev_private; /**< device private data */
+	drm_sigdata_t     sigdata; /**< For block_all_signals */
+	sigset_t          sigmask;
+
+	struct            drm_driver *driver;
+	drm_local_map_t   *agp_buffer_map;
+	drm_head_t primary;		/**< primary screen head */
+} drm_device_t;
+
+static __inline__ int drm_core_check_feature(struct drm_device *dev, int feature)
+{
+	return ((dev->driver->driver_features & feature) ? 1 : 0);
+}
+
+#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);
+}
+#else
+#define drm_core_has_MTRR(dev) (0)
+#endif
+
+/******************************************************************/
+/** \name Internal function definitions */
+/*@{*/
+
+				/* Misc. support (drm_init.h) */
+extern int	     drm_flags;
+extern void	     drm_parse_options( char *s );
+extern int           drm_cpu_valid( void );
+
+				/* Driver support (drm_drv.h) */
+extern int           drm_init(struct drm_driver *driver);
+extern void          drm_exit(struct drm_driver *driver);
+extern int           drm_version(struct inode *inode, struct file *filp,
+				  unsigned int cmd, unsigned long arg);
+extern int           drm_ioctl(struct inode *inode, struct file *filp,
+				unsigned int cmd, unsigned long arg);
+extern int           drm_takedown(drm_device_t * 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_open_helper(struct inode *inode, struct file *filp,
+				      drm_device_t *dev);
+extern int	     drm_flush(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 void	     drm_vm_open(struct vm_area_struct *vma);
+extern void	     drm_vm_close(struct vm_area_struct *vma);
+extern void	     drm_vm_shm_close(struct vm_area_struct *vma);
+extern int	     drm_mmap_dma(struct file *filp,
+				   struct vm_area_struct *vma);
+extern int	     drm_mmap(struct file *filp, struct vm_area_struct *vma);
+extern unsigned int  drm_poll(struct file *filp, struct poll_table_struct *wait);
+extern ssize_t       drm_read(struct file *filp, char __user *buf, size_t count, loff_t *off);
+
+				/* 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_calloc(size_t nmemb, size_t size, int area);
+extern void	     *drm_realloc(void *oldpt, size_t oldsize, size_t size,
+				   int area);
+extern unsigned long drm_alloc_pages(int order, int area);
+extern void	     drm_free_pages(unsigned long address, int order,
+				     int area);
+extern void	     *drm_ioremap(unsigned long offset, unsigned long size, drm_device_t *dev);
+extern void	     *drm_ioremap_nocache(unsigned long offset, unsigned long size,
+					   drm_device_t *dev);
+extern void	     drm_ioremapfree(void *pt, unsigned long size, drm_device_t *dev);
+
+extern DRM_AGP_MEM   *drm_alloc_agp(struct agp_bridge_data *bridge, 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 inode *inode, struct file *filp,
+				       unsigned int cmd, unsigned long arg);
+extern int	     drm_getunique(struct inode *inode, struct file *filp,
+				    unsigned int cmd, unsigned long arg);
+extern int	     drm_setunique(struct inode *inode, struct file *filp,
+				    unsigned int cmd, unsigned long arg);
+extern int	     drm_getmap(struct inode *inode, struct file *filp,
+				 unsigned int cmd, unsigned long arg);
+extern int	     drm_getclient(struct inode *inode, struct file *filp,
+				    unsigned int cmd, unsigned long arg);
+extern int	     drm_getstats(struct inode *inode, struct file *filp,
+				   unsigned int cmd, unsigned long arg);
+extern int	     drm_setversion(struct inode *inode, struct file *filp,
+				     unsigned int cmd, unsigned long arg);
+
+				/* Context IOCTL support (drm_context.h) */
+extern int	     drm_resctx( struct inode *inode, struct file *filp,
+				  unsigned int cmd, unsigned long arg );
+extern int	     drm_addctx( struct inode *inode, struct file *filp,
+				  unsigned int cmd, unsigned long arg );
+extern int	     drm_modctx( struct inode *inode, struct file *filp,
+				  unsigned int cmd, unsigned long arg );
+extern int	     drm_getctx( struct inode *inode, struct file *filp,
+				  unsigned int cmd, unsigned long arg );
+extern int	     drm_switchctx( struct inode *inode, struct file *filp,
+				     unsigned int cmd, unsigned long arg );
+extern int	     drm_newctx( struct inode *inode, struct file *filp,
+				  unsigned int cmd, unsigned long arg );
+extern int	     drm_rmctx( struct inode *inode, struct file *filp,
+				 unsigned int cmd, unsigned long arg );
+
+extern int	     drm_context_switch(drm_device_t *dev, int old, int new);
+extern int	     drm_context_switch_complete(drm_device_t *dev, int new);
+
+extern int	     drm_ctxbitmap_init( drm_device_t *dev );
+extern void	     drm_ctxbitmap_cleanup( drm_device_t *dev );
+extern void          drm_ctxbitmap_free( drm_device_t *dev, int ctx_handle );
+
+extern int	     drm_setsareactx( struct inode *inode, struct file *filp,
+				       unsigned int cmd, unsigned long arg );
+extern int	     drm_getsareactx( struct inode *inode, struct file *filp,
+				       unsigned int cmd, unsigned long arg );
+
+				/* Drawable IOCTL support (drm_drawable.h) */
+extern int	     drm_adddraw(struct inode *inode, struct file *filp,
+				  unsigned int cmd, unsigned long arg);
+extern int	     drm_rmdraw(struct inode *inode, struct file *filp,
+				 unsigned int cmd, unsigned long arg);
+
+
+				/* Authentication IOCTL support (drm_auth.h) */
+extern int	     drm_add_magic(drm_device_t *dev, drm_file_t *priv,
+				    drm_magic_t magic);
+extern int	     drm_remove_magic(drm_device_t *dev, drm_magic_t magic);
+extern int	     drm_getmagic(struct inode *inode, struct file *filp,
+				   unsigned int cmd, unsigned long arg);
+extern int	     drm_authmagic(struct inode *inode, struct file *filp,
+				    unsigned int cmd, unsigned long arg);
+
+                                /* Placeholder for ioctls past */
+extern int	     drm_noop(struct inode *inode, struct file *filp,
+				  unsigned int cmd, unsigned long arg);
+
+				/* Locking IOCTL support (drm_lock.h) */
+extern int           drm_lock(struct inode *inode, struct file *filp,
+			       unsigned int cmd, unsigned long arg);
+extern int           drm_unlock(struct inode *inode, struct file *filp,
+				 unsigned int cmd, unsigned long arg);
+extern int	     drm_lock_take(__volatile__ unsigned int *lock,
+				    unsigned int context);
+extern int	     drm_lock_transfer(drm_device_t *dev,
+					__volatile__ unsigned int *lock,
+					unsigned int context);
+extern int	     drm_lock_free(drm_device_t *dev,
+				    __volatile__ unsigned int *lock,
+				    unsigned int context);
+extern int           drm_notifier(void *priv);
+
+				/* Buffer management support (drm_bufs.h) */
+extern int	     drm_order( unsigned long size );
+extern int	     drm_addmap( struct inode *inode, struct file *filp,
+				  unsigned int cmd, unsigned long arg );
+extern int	     drm_rmmap( struct inode *inode, struct file *filp,
+				 unsigned int cmd, unsigned long arg );
+extern int	     drm_addbufs( struct inode *inode, struct file *filp,
+				   unsigned int cmd, unsigned long arg );
+extern int	     drm_infobufs( struct inode *inode, struct file *filp,
+				    unsigned int cmd, unsigned long arg );
+extern int	     drm_markbufs( struct inode *inode, struct file *filp,
+				    unsigned int cmd, unsigned long arg );
+extern int	     drm_freebufs( struct inode *inode, struct file *filp,
+				    unsigned int cmd, unsigned long arg );
+extern int	     drm_mapbufs( struct inode *inode, struct file *filp,
+				   unsigned int cmd, unsigned long arg );
+
+				/* DMA support (drm_dma.h) */
+extern int	     drm_dma_setup(drm_device_t *dev);
+extern void	     drm_dma_takedown(drm_device_t *dev);
+extern void	     drm_free_buffer(drm_device_t *dev, drm_buf_t *buf);
+extern void	     drm_core_reclaim_buffers(drm_device_t *dev, struct file *filp);
+
+				/* IRQ support (drm_irq.h) */
+extern int           drm_control( struct inode *inode, struct file *filp,
+				   unsigned int cmd, unsigned long arg );
+extern int           drm_irq_install( drm_device_t *dev );
+extern int           drm_irq_uninstall( drm_device_t *dev );
+extern irqreturn_t   drm_irq_handler( DRM_IRQ_ARGS );
+extern void          drm_driver_irq_preinstall( drm_device_t *dev );
+extern void          drm_driver_irq_postinstall( drm_device_t *dev );
+extern void          drm_driver_irq_uninstall( drm_device_t *dev );
+
+extern int           drm_wait_vblank(struct inode *inode, struct file *filp,
+				      unsigned int cmd, unsigned long arg);
+extern int           drm_vblank_wait(drm_device_t *dev, unsigned int *vbl_seq);
+extern void          drm_vbl_send_signals( drm_device_t *dev );
+
+				/* AGP/GART support (drm_agpsupport.h) */
+extern drm_agp_head_t *drm_agp_init(drm_device_t *dev);
+extern int            drm_agp_acquire(struct inode *inode, struct file *filp,
+				       unsigned int cmd, unsigned long arg);
+extern void           drm_agp_do_release(drm_device_t *dev);
+extern int            drm_agp_release(struct inode *inode, struct file *filp,
+				       unsigned int cmd, unsigned long arg);
+extern int            drm_agp_enable(struct inode *inode, struct file *filp,
+				      unsigned int cmd, unsigned long arg);
+extern int            drm_agp_info(struct inode *inode, struct file *filp,
+				    unsigned int cmd, unsigned long arg);
+extern int            drm_agp_alloc(struct inode *inode, struct file *filp,
+				     unsigned int cmd, unsigned long arg);
+extern int            drm_agp_free(struct inode *inode, struct file *filp,
+				    unsigned int cmd, unsigned long arg);
+extern int            drm_agp_unbind(struct inode *inode, struct file *filp,
+				      unsigned int cmd, unsigned long arg);
+extern int            drm_agp_bind(struct inode *inode, struct file *filp,
+				    unsigned int cmd, unsigned long arg);
+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(drm_device_t * dev);
+extern int drm_get_head(drm_device_t * dev, drm_head_t *head);
+extern int drm_put_head(drm_head_t * head);
+extern unsigned int   drm_debug;
+extern unsigned int   drm_cards_limit;
+extern drm_head_t **drm_heads;
+extern struct drm_sysfs_class *drm_class;
+extern struct proc_dir_entry *drm_proc_root;
+
+				/* Proc support (drm_proc.h) */
+extern int            drm_proc_init(drm_device_t *dev,
+					     int minor,
+					     struct proc_dir_entry *root,
+					     struct proc_dir_entry **dev_root);
+extern int            drm_proc_cleanup(int minor,
+					struct proc_dir_entry *root,
+					struct proc_dir_entry *dev_root);
+
+				/* Scatter Gather Support (drm_scatter.h) */
+extern void           drm_sg_cleanup(drm_sg_mem_t *entry);
+extern int            drm_sg_alloc(struct inode *inode, struct file *filp,
+				    unsigned int cmd, unsigned long arg);
+extern int            drm_sg_free(struct inode *inode, struct file *filp,
+				   unsigned int cmd, unsigned long arg);
+
+                               /* ATI PCIGART support (ati_pcigart.h) */
+extern int            drm_ati_pcigart_init(drm_device_t *dev,
+					    unsigned long *addr,
+					    dma_addr_t *bus_addr);
+extern int            drm_ati_pcigart_cleanup(drm_device_t *dev,
+					       unsigned long addr,
+					       dma_addr_t bus_addr);
+
+extern void *drm_pci_alloc(drm_device_t * dev, size_t size,
+			   size_t align, dma_addr_t maxaddr,
+			   dma_addr_t * busaddr);
+
+extern void drm_pci_free(drm_device_t * dev, size_t size,
+			 void *vaddr, dma_addr_t busaddr);
+
+			       /* sysfs support (drm_sysfs.c) */
+struct drm_sysfs_class;
+extern struct drm_sysfs_class *drm_sysfs_create(struct module *owner,
+						char *name);
+extern void drm_sysfs_destroy(struct drm_sysfs_class *cs);
+extern struct class_device *drm_sysfs_device_add(struct drm_sysfs_class *cs,
+						 dev_t dev,
+						 struct device *device,
+						 const char *fmt, ...);
+extern void drm_sysfs_device_remove(dev_t dev);
+
+
+/* Inline replacements for DRM_IOREMAP macros */
+static __inline__ void drm_core_ioremap(struct drm_map *map, struct drm_device *dev)
+{
+	map->handle = drm_ioremap( map->offset, map->size, dev );
+}
+
+static __inline__ void drm_core_ioremap_nocache(struct drm_map *map, struct drm_device *dev)
+{
+	map->handle = drm_ioremap_nocache(map->offset, map->size, dev);
+}
+
+static __inline__ void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev)
+{
+	if ( map->handle && map->size )
+		drm_ioremapfree( map->handle, map->size, dev );
+}
+
+static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev, unsigned long offset)
+{
+	struct list_head *_list;
+	list_for_each( _list, &dev->maplist->head ) {
+		drm_map_list_t *_entry = list_entry( _list, drm_map_list_t, head );
+		if ( _entry->map &&
+		     _entry->map->offset == offset ) {
+			return _entry->map;
+		}
+	}
+	return NULL;
+}
+
+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);
+}
+#else
+extern void *drm_alloc(size_t size, int area);
+extern void drm_free(void *pt, size_t size, int area);
+#endif
+
+/*@}*/
+
+extern unsigned long drm_core_get_map_ofs(drm_map_t *map);
+extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
+
+#endif /* __KERNEL__ */
+#endif