include/drm/drmP.h

   1 /**
   2  * \file drmP.h
   3  * Private header for Direct Rendering Manager
   4  *
   5  * \author Rickard E. (Rik) Faith <faith@valinux.com>
   6  * \author Gareth Hughes <gareth@valinux.com>
   7  */
   8
   9 /*
  10  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
  11  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
  12  * All rights reserved.
  13  *
  14  * Permission is hereby granted, free of charge, to any person obtaining a
  15  * copy of this software and associated documentation files (the "Software"),
  16  * to deal in the Software without restriction, including without limitation
  17  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  18  * and/or sell copies of the Software, and to permit persons to whom the
  19  * Software is furnished to do so, subject to the following conditions:
  20  *
  21  * The above copyright notice and this permission notice (including the next
  22  * paragraph) shall be included in all copies or substantial portions of the
  23  * Software.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  26  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  27  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  28  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  29  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  30  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  31  * OTHER DEALINGS IN THE SOFTWARE.
  32  */
  33
  34 #ifndef _DRM_P_H_
  35 #define _DRM_P_H_
  36
  37 /* If you want the memory alloc debug functionality, change define below */
  38 /* #define DEBUG_MEMORY */
  39
  40 #ifdef __KERNEL__
  41 #ifdef __alpha__
  42 /* add include of current.h so that "current" is defined
  43  * before static inline funcs in wait.h. Doing this so we
  44  * can build the DRM (part of PI DRI). 4/21/2000 S + B */
  45 #include <asm/current.h>
  46 #endif                          /* __alpha__ */
  47 #include <linux/module.h>
  48 #include <linux/kernel.h>
  49 #include <linux/miscdevice.h>
  50 #include <linux/fs.h>
  51 #include <linux/proc_fs.h>
  52 #include <linux/init.h>
  53 #include <linux/file.h>
  54 #include <linux/pci.h>
  55 #include <linux/jiffies.h>
  56 #include <linux/smp_lock.h>     /* For (un)lock_kernel */
  57 #include <linux/dma-mapping.h>
  58 #include <linux/mm.h>
  59 #include <linux/cdev.h>
  60 #include <linux/mutex.h>
  61 #if defined(__alpha__) || defined(__powerpc__)
  62 #include <asm/pgtable.h>        /* For pte_wrprotect */
  63 #endif
  64 #include <asm/io.h>
  65 #include <asm/mman.h>
  66 #include <asm/uaccess.h>
  67 #ifdef CONFIG_MTRR
  68 #include <asm/mtrr.h>
  69 #endif
  70 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
  71 #include <linux/types.h>
  72 #include <linux/agp_backend.h>
  73 #endif
  74 #include <linux/workqueue.h>
  75 #include <linux/poll.h>
  76 #include <asm/pgalloc.h>
  77 #include "drm.h"
  78
  79 #include <linux/idr.h>
  80
  81 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
  82 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
  83
  84 struct drm_file;
  85 struct drm_device;
  86
  87 #include "drm_os_linux.h"
  88 #include "drm_hashtab.h"
  89
  90 /***********************************************************************/
  91 /** \name DRM template customization defaults */
  92 /*@{*/
  93
  94 /* driver capabilities and requirements mask */
  95 #define DRIVER_USE_AGP     0x1
  96 #define DRIVER_REQUIRE_AGP 0x2
  97 #define DRIVER_USE_MTRR    0x4
  98 #define DRIVER_PCI_DMA     0x8
  99 #define DRIVER_SG          0x10
 100 #define DRIVER_HAVE_DMA    0x20
 101 #define DRIVER_HAVE_IRQ    0x40
 102 #define DRIVER_IRQ_SHARED  0x80
 103 #define DRIVER_IRQ_VBL     0x100
 104 #define DRIVER_DMA_QUEUE   0x200
 105 #define DRIVER_FB_DMA      0x400
 106 #define DRIVER_IRQ_VBL2    0x800
 107 #define DRIVER_GEM         0x1000
 108 #define DRIVER_MODESET     0x2000
 109
 110 /***********************************************************************/
 111 /** \name Begin the DRM... */
 112 /*@{*/
 113
 114 #define DRM_DEBUG_CODE 2          /**< Include debugging code if > 1, then
 115                                      also include looping detection. */
 116
 117 #define DRM_MAGIC_HASH_ORDER  4  /**< Size of key hash table. Must be power of 2. */
 118 #define DRM_KERNEL_CONTEXT    0  /**< Change drm_resctx if changed */
 119 #define DRM_RESERVED_CONTEXTS 1  /**< Change drm_resctx if changed */
 120 #define DRM_LOOPING_LIMIT     5000000
 121 #define DRM_TIME_SLICE        (HZ/20)  /**< Time slice for GLXContexts */
 122 #define DRM_LOCK_SLICE        1 /**< Time slice for lock, in jiffies */
 123
 124 #define DRM_FLAG_DEBUG    0x01
 125
 126 #define DRM_MEM_DMA        0
 127 #define DRM_MEM_SAREA      1
 128 #define DRM_MEM_DRIVER     2
 129 #define DRM_MEM_MAGIC      3
 130 #define DRM_MEM_IOCTLS     4
 131 #define DRM_MEM_MAPS       5
 132 #define DRM_MEM_VMAS       6
 133 #define DRM_MEM_BUFS       7
 134 #define DRM_MEM_SEGS       8
 135 #define DRM_MEM_PAGES      9
 136 #define DRM_MEM_FILES     10
 137 #define DRM_MEM_QUEUES    11
 138 #define DRM_MEM_CMDS      12
 139 #define DRM_MEM_MAPPINGS  13
 140 #define DRM_MEM_BUFLISTS  14
 141 #define DRM_MEM_AGPLISTS  15
 142 #define DRM_MEM_TOTALAGP  16
 143 #define DRM_MEM_BOUNDAGP  17
 144 #define DRM_MEM_CTXBITMAP 18
 145 #define DRM_MEM_STUB      19
 146 #define DRM_MEM_SGLISTS   20
 147 #define DRM_MEM_CTXLIST   21
 148 #define DRM_MEM_MM        22
 149 #define DRM_MEM_HASHTAB   23
 150
 151 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
 152 #define DRM_MAP_HASH_OFFSET 0x10000000
 153
 154 /*@}*/
 155
 156 /***********************************************************************/
 157 /** \name Macros to make printk easier */
 158 /*@{*/
 159
 160 /**
 161  * Error output.
 162  *
 163  * \param fmt printf() like format string.
 164  * \param arg arguments
 165  */
 166 #define DRM_ERROR(fmt, arg...) \
 167         printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)
 168
 169 /**
 170  * Memory error output.
 171  *
 172  * \param area memory area where the error occurred.
 173  * \param fmt printf() like format string.
 174  * \param arg arguments
 175  */
 176 #define DRM_MEM_ERROR(area, fmt, arg...) \
 177         printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \
 178                drm_mem_stats[area].name , ##arg)
 179
 180 #define DRM_INFO(fmt, arg...)  printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
 181
 182 /**
 183  * Debug output.
 184  *
 185  * \param fmt printf() like format string.
 186  * \param arg arguments
 187  */
 188 #if DRM_DEBUG_CODE
 189 #define DRM_DEBUG(fmt, arg...)                                          \
 190         do {                                                            \
 191                 if ( drm_debug )                        \
 192                         printk(KERN_DEBUG                               \
 193                                "[" DRM_NAME ":%s] " fmt ,       \
 194                                __func__ , ##arg);                       \
 195         } while (0)
 196 #else
 197 #define DRM_DEBUG(fmt, arg...)           do { } while (0)
 198 #endif
 199
 200 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
 201
 202 #define DRM_PROC_PRINT(fmt, arg...)                                     \
 203    len += sprintf(&buf[len], fmt , ##arg);                              \
 204    if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
 205
 206 #define DRM_PROC_PRINT_RET(ret, fmt, arg...)                            \
 207    len += sprintf(&buf[len], fmt , ##arg);                              \
 208    if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
 209
 210 /*@}*/
 211
 212 /***********************************************************************/
 213 /** \name Internal types and structures */
 214 /*@{*/
 215
 216 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
 217
 218 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
 219 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
 220 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
 221
 222 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 223 /**
 224  * Get the private SAREA mapping.
 225  *
 226  * \param _dev DRM device.
 227  * \param _ctx context number.
 228  * \param _map output mapping.
 229  */
 230 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do {       \
 231         (_map) = (_dev)->context_sareas[_ctx];          \
 232 } while(0)
 233
 234 /**
 235  * Test that the hardware lock is held by the caller, returning otherwise.
 236  *
 237  * \param dev DRM device.
 238  * \param filp file pointer of the caller.
 239  */
 240 #define LOCK_TEST_WITH_RETURN( dev, file_priv )                         \
 241 do {                                                                    \
 242         if (!_DRM_LOCK_IS_HELD(file_priv->master->lock.hw_lock->lock) ||                \
 243             file_priv->master->lock.file_priv != file_priv)     {                       \
 244                 DRM_ERROR( "%s called without lock held, held  %d owner %p %p\n",\
 245                            __func__, _DRM_LOCK_IS_HELD(file_priv->master->lock.hw_lock->lock),\
 246                            file_priv->master->lock.file_priv, file_priv);               \
 247                 return -EINVAL;                                         \
 248         }                                                               \
 249 } while (0)
 250
 251 /**
 252  * Copy and IOCTL return string to user space
 253  */
 254 #define DRM_COPY( name, value )                                         \
 255         len = strlen( value );                                          \
 256         if ( len > name##_len ) len = name##_len;                       \
 257         name##_len = strlen( value );                                   \
 258         if ( len && name ) {                                            \
 259                 if ( copy_to_user( name, value, len ) )                 \
 260                         return -EFAULT;                                 \
 261         }
 262
 263 /**
 264  * Ioctl function type.
 265  *
 266  * \param inode device inode.
 267  * \param file_priv DRM file private pointer.
 268  * \param cmd command.
 269  * \param arg argument.
 270  */
 271 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
 272                         struct drm_file *file_priv);
 273
 274 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
 275                                unsigned long arg);
 276
 277 #define DRM_AUTH        0x1
 278 #define DRM_MASTER      0x2
 279 #define DRM_ROOT_ONLY   0x4
 280 #define DRM_CONTROL_ALLOW 0x8
 281
 282 struct drm_ioctl_desc {
 283         unsigned int cmd;
 284         int flags;
 285         drm_ioctl_t *func;
 286 };
 287
 288 /**
 289  * Creates a driver or general drm_ioctl_desc array entry for the given
 290  * ioctl, for use by drm_ioctl().
 291  */
 292 #define DRM_IOCTL_DEF(ioctl, _func, _flags) \
 293         [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags}
 294
 295 struct drm_magic_entry {
 296         struct list_head head;
 297         struct drm_hash_item hash_item;
 298         struct drm_file *priv;
 299 };
 300
 301 struct drm_vma_entry {
 302         struct list_head head;
 303         struct vm_area_struct *vma;
 304         pid_t pid;
 305 };
 306
 307 /**
 308  * DMA buffer.
 309  */
 310 struct drm_buf {
 311         int idx;                       /**< Index into master buflist */
 312         int total;                     /**< Buffer size */
 313         int order;                     /**< log-base-2(total) */
 314         int used;                      /**< Amount of buffer in use (for DMA) */
 315         unsigned long offset;          /**< Byte offset (used internally) */
 316         void *address;                 /**< Address of buffer */
 317         unsigned long bus_address;     /**< Bus address of buffer */
 318         struct drm_buf *next;          /**< Kernel-only: used for free list */
 319         __volatile__ int waiting;      /**< On kernel DMA queue */
 320         __volatile__ int pending;      /**< On hardware DMA queue */
 321         wait_queue_head_t dma_wait;    /**< Processes waiting */
 322         struct drm_file *file_priv;    /**< Private of holding file descr */
 323         int context;                   /**< Kernel queue for this buffer */
 324         int while_locked;              /**< Dispatch this buffer while locked */
 325         enum {
 326                 DRM_LIST_NONE = 0,
 327                 DRM_LIST_FREE = 1,
 328                 DRM_LIST_WAIT = 2,
 329                 DRM_LIST_PEND = 3,
 330                 DRM_LIST_PRIO = 4,
 331                 DRM_LIST_RECLAIM = 5
 332         } list;                        /**< Which list we're on */
 333
 334         int dev_priv_size;               /**< Size of buffer private storage */
 335         void *dev_private;               /**< Per-buffer private storage */
 336 };
 337
 338 /** bufs is one longer than it has to be */
 339 struct drm_waitlist {
 340         int count;                      /**< Number of possible buffers */
 341         struct drm_buf **bufs;          /**< List of pointers to buffers */
 342         struct drm_buf **rp;                    /**< Read pointer */
 343         struct drm_buf **wp;                    /**< Write pointer */
 344         struct drm_buf **end;           /**< End pointer */
 345         spinlock_t read_lock;
 346         spinlock_t write_lock;
 347 };
 348
 349 struct drm_freelist {
 350         int initialized;               /**< Freelist in use */
 351         atomic_t count;                /**< Number of free buffers */
 352         struct drm_buf *next;          /**< End pointer */
 353
 354         wait_queue_head_t waiting;     /**< Processes waiting on free bufs */
 355         int low_mark;                  /**< Low water mark */
 356         int high_mark;                 /**< High water mark */
 357         atomic_t wfh;                  /**< If waiting for high mark */
 358         spinlock_t lock;
 359 };
 360
 361 typedef struct drm_dma_handle {
 362         dma_addr_t busaddr;
 363         void *vaddr;
 364         size_t size;
 365 } drm_dma_handle_t;
 366
 367 /**
 368  * Buffer entry.  There is one of this for each buffer size order.
 369  */
 370 struct drm_buf_entry {
 371         int buf_size;                   /**< size */
 372         int buf_count;                  /**< number of buffers */
 373         struct drm_buf *buflist;                /**< buffer list */
 374         int seg_count;
 375         int page_order;
 376         struct drm_dma_handle **seglist;
 377
 378         struct drm_freelist freelist;
 379 };
 380
 381 /** File private data */
 382 struct drm_file {
 383         int authenticated;
 384         pid_t pid;
 385         uid_t uid;
 386         drm_magic_t magic;
 387         unsigned long ioctl_count;
 388         struct list_head lhead;
 389         struct drm_minor *minor;
 390         unsigned long lock_count;
 391
 392         /** Mapping of mm object handles to object pointers. */
 393         struct idr object_idr;
 394         /** Lock for synchronization of access to object_idr. */
 395         spinlock_t table_lock;
 396
 397         struct file *filp;
 398         void *driver_priv;
 399
 400         int is_master; /* this file private is a master for a minor */
 401         struct drm_master *master; /* master this node is currently associated with
 402                                       N.B. not always minor->master */
 403         struct list_head fbs;
 404 };
 405
 406 /** Wait queue */
 407 struct drm_queue {
 408         atomic_t use_count;             /**< Outstanding uses (+1) */
 409         atomic_t finalization;          /**< Finalization in progress */
 410         atomic_t block_count;           /**< Count of processes waiting */
 411         atomic_t block_read;            /**< Queue blocked for reads */
 412         wait_queue_head_t read_queue;   /**< Processes waiting on block_read */
 413         atomic_t block_write;           /**< Queue blocked for writes */
 414         wait_queue_head_t write_queue;  /**< Processes waiting on block_write */
 415         atomic_t total_queued;          /**< Total queued statistic */
 416         atomic_t total_flushed;         /**< Total flushes statistic */
 417         atomic_t total_locks;           /**< Total locks statistics */
 418         enum drm_ctx_flags flags;       /**< Context preserving and 2D-only */
 419         struct drm_waitlist waitlist;   /**< Pending buffers */
 420         wait_queue_head_t flush_queue;  /**< Processes waiting until flush */
 421 };
 422
 423 /**
 424  * Lock data.
 425  */
 426 struct drm_lock_data {
 427         struct drm_hw_lock *hw_lock;    /**< Hardware lock */
 428         /** Private of lock holder's file (NULL=kernel) */
 429         struct drm_file *file_priv;
 430         wait_queue_head_t lock_queue;   /**< Queue of blocked processes */
 431         unsigned long lock_time;        /**< Time of last lock in jiffies */
 432         spinlock_t spinlock;
 433         uint32_t kernel_waiters;
 434         uint32_t user_waiters;
 435         int idle_has_lock;
 436 };
 437
 438 /**
 439  * DMA data.
 440  */
 441 struct drm_device_dma {
 442
 443         struct drm_buf_entry bufs[DRM_MAX_ORDER + 1];   /**< buffers, grouped by their size order */
 444         int buf_count;                  /**< total number of buffers */
 445         struct drm_buf **buflist;               /**< Vector of pointers into drm_device_dma::bufs */
 446         int seg_count;
 447         int page_count;                 /**< number of pages */
 448         unsigned long *pagelist;        /**< page list */
 449         unsigned long byte_count;
 450         enum {
 451                 _DRM_DMA_USE_AGP = 0x01,
 452                 _DRM_DMA_USE_SG = 0x02,
 453                 _DRM_DMA_USE_FB = 0x04,
 454                 _DRM_DMA_USE_PCI_RO = 0x08
 455         } flags;
 456
 457 };
 458
 459 /**
 460  * AGP memory entry.  Stored as a doubly linked list.
 461  */
 462 struct drm_agp_mem {
 463         unsigned long handle;           /**< handle */
 464         DRM_AGP_MEM *memory;
 465         unsigned long bound;            /**< address */
 466         int pages;
 467         struct list_head head;
 468 };
 469
 470 /**
 471  * AGP data.
 472  *
 473  * \sa drm_agp_init() and drm_device::agp.
 474  */
 475 struct drm_agp_head {
 476         DRM_AGP_KERN agp_info;          /**< AGP device information */
 477         struct list_head memory;
 478         unsigned long mode;             /**< AGP mode */
 479         struct agp_bridge_data *bridge;
 480         int enabled;                    /**< whether the AGP bus as been enabled */
 481         int acquired;                   /**< whether the AGP device has been acquired */
 482         unsigned long base;
 483         int agp_mtrr;
 484         int cant_use_aperture;
 485         unsigned long page_mask;
 486 };
 487
 488 /**
 489  * Scatter-gather memory.
 490  */
 491 struct drm_sg_mem {
 492         unsigned long handle;
 493         void *virtual;
 494         int pages;
 495         struct page **pagelist;
 496         dma_addr_t *busaddr;
 497 };
 498
 499 struct drm_sigdata {
 500         int context;
 501         struct drm_hw_lock *lock;
 502 };
 503
 504
 505 /*
 506  * Generic memory manager structs
 507  */
 508
 509 struct drm_mm_node {
 510         struct list_head fl_entry;
 511         struct list_head ml_entry;
 512         int free;
 513         unsigned long start;
 514         unsigned long size;
 515         struct drm_mm *mm;
 516         void *private;
 517 };
 518
 519 struct drm_mm {
 520         struct list_head fl_entry;
 521         struct list_head ml_entry;
 522 };
 523
 524
 525 /**
 526  * Kernel side of a mapping
 527  */
 528 struct drm_local_map {
 529         resource_size_t offset;  /**< Requested physical address (0 for SAREA)*/
 530         unsigned long size;      /**< Requested physical size (bytes) */
 531         enum drm_map_type type;  /**< Type of memory to map */
 532         enum drm_map_flags flags;        /**< Flags */
 533         void *handle;            /**< User-space: "Handle" to pass to mmap() */
 534                                  /**< Kernel-space: kernel-virtual address */
 535         int mtrr;                /**< MTRR slot used */
 536 };
 537
 538 typedef struct drm_local_map drm_local_map_t;
 539
 540 /**
 541  * Mappings list
 542  */
 543 struct drm_map_list {
 544         struct list_head head;          /**< list head */
 545         struct drm_hash_item hash;
 546         struct drm_local_map *map;      /**< mapping */
 547         uint64_t user_token;
 548         struct drm_master *master;
 549         struct drm_mm_node *file_offset_node;   /**< fake offset */
 550 };
 551
 552 /**
 553  * Context handle list
 554  */
 555 struct drm_ctx_list {
 556         struct list_head head;          /**< list head */
 557         drm_context_t handle;           /**< context handle */
 558         struct drm_file *tag;           /**< associated fd private data */
 559 };
 560
 561 /* location of GART table */
 562 #define DRM_ATI_GART_MAIN 1
 563 #define DRM_ATI_GART_FB   2
 564
 565 #define DRM_ATI_GART_PCI 1
 566 #define DRM_ATI_GART_PCIE 2
 567 #define DRM_ATI_GART_IGP 3
 568
 569 struct drm_ati_pcigart_info {
 570         int gart_table_location;
 571         int gart_reg_if;
 572         void *addr;
 573         dma_addr_t bus_addr;
 574         dma_addr_t table_mask;
 575         struct drm_dma_handle *table_handle;
 576         struct drm_local_map mapping;
 577         int table_size;
 578 };
 579
 580 /**
 581  * GEM specific mm private for tracking GEM objects
 582  */
 583 struct drm_gem_mm {
 584         struct drm_mm offset_manager;   /**< Offset mgmt for buffer objects */
 585         struct drm_open_hash offset_hash; /**< User token hash table for maps */
 586 };
 587
 588 /**
 589  * This structure defines the drm_mm memory object, which will be used by the
 590  * DRM for its buffer objects.
 591  */
 592 struct drm_gem_object {
 593         /** Reference count of this object */
 594         struct kref refcount;
 595
 596         /** Handle count of this object. Each handle also holds a reference */
 597         struct kref handlecount;
 598
 599         /** Related drm device */
 600         struct drm_device *dev;
 601
 602         /** File representing the shmem storage */
 603         struct file *filp;
 604
 605         /* Mapping info for this object */
 606         struct drm_map_list map_list;
 607
 608         /**
 609          * Size of the object, in bytes.  Immutable over the object's
 610          * lifetime.
 611          */
 612         size_t size;
 613
 614         /**
 615          * Global name for this object, starts at 1. 0 means unnamed.
 616          * Access is covered by the object_name_lock in the related drm_device
 617          */
 618         int name;
 619
 620         /**
 621          * Memory domains. These monitor which caches contain read/write data
 622          * related to the object. When transitioning from one set of domains
 623          * to another, the driver is called to ensure that caches are suitably
 624          * flushed and invalidated
 625          */
 626         uint32_t read_domains;
 627         uint32_t write_domain;
 628
 629         /**
 630          * While validating an exec operation, the
 631          * new read/write domain values are computed here.
 632          * They will be transferred to the above values
 633          * at the point that any cache flushing occurs
 634          */
 635         uint32_t pending_read_domains;
 636         uint32_t pending_write_domain;
 637
 638         void *driver_private;
 639 };
 640
 641 #include "drm_crtc.h"
 642
 643 /* per-master structure */
 644 struct drm_master {
 645
 646         struct kref refcount; /* refcount for this master */
 647
 648         struct list_head head; /**< each minor contains a list of masters */
 649         struct drm_minor *minor; /**< link back to minor we are a master for */
 650
 651         char *unique;                   /**< Unique identifier: e.g., busid */
 652         int unique_len;                 /**< Length of unique field */
 653         int unique_size;                /**< amount allocated */
 654
 655         int blocked;                    /**< Blocked due to VC switch? */
 656
 657         /** \name Authentication */
 658         /*@{ */
 659         struct drm_open_hash magiclist;
 660         struct list_head magicfree;
 661         /*@} */
 662
 663         struct drm_lock_data lock;      /**< Information on hardware lock */
 664
 665         void *driver_priv; /**< Private structure for driver to use */
 666 };
 667
 668 /**
 669  * DRM driver structure. This structure represent the common code for
 670  * a family of cards. There will one drm_device for each card present
 671  * in this family
 672  */
 673 struct drm_driver {
 674         int (*load) (struct drm_device *, unsigned long flags);
 675         int (*firstopen) (struct drm_device *);
 676         int (*open) (struct drm_device *, struct drm_file *);
 677         void (*preclose) (struct drm_device *, struct drm_file *file_priv);
 678         void (*postclose) (struct drm_device *, struct drm_file *);
 679         void (*lastclose) (struct drm_device *);
 680         int (*unload) (struct drm_device *);
 681         int (*suspend) (struct drm_device *, pm_message_t state);
 682         int (*resume) (struct drm_device *);
 683         int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
 684         void (*dma_ready) (struct drm_device *);
 685         int (*dma_quiescent) (struct drm_device *);
 686         int (*context_ctor) (struct drm_device *dev, int context);
 687         int (*context_dtor) (struct drm_device *dev, int context);
 688         int (*kernel_context_switch) (struct drm_device *dev, int old,
 689                                       int new);
 690         void (*kernel_context_switch_unlock) (struct drm_device *dev);
 691
 692         /**
 693          * get_vblank_counter - get raw hardware vblank counter
 694          * @dev: DRM device
 695          * @crtc: counter to fetch
 696          *
 697          * Driver callback for fetching a raw hardware vblank counter
 698          * for @crtc.  If a device doesn't have a hardware counter, the
 699          * driver can simply return the value of drm_vblank_count and
 700          * make the enable_vblank() and disable_vblank() hooks into no-ops,
 701          * leaving interrupts enabled at all times.
 702          *
 703          * Wraparound handling and loss of events due to modesetting is dealt
 704          * with in the DRM core code.
 705          *
 706          * RETURNS
 707          * Raw vblank counter value.
 708          */
 709         u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
 710
 711         /**
 712          * enable_vblank - enable vblank interrupt events
 713          * @dev: DRM device
 714          * @crtc: which irq to enable
 715          *
 716          * Enable vblank interrupts for @crtc.  If the device doesn't have
 717          * a hardware vblank counter, this routine should be a no-op, since
 718          * interrupts will have to stay on to keep the count accurate.
 719          *
 720          * RETURNS
 721          * Zero on success, appropriate errno if the given @crtc's vblank
 722          * interrupt cannot be enabled.
 723          */
 724         int (*enable_vblank) (struct drm_device *dev, int crtc);
 725
 726         /**
 727          * disable_vblank - disable vblank interrupt events
 728          * @dev: DRM device
 729          * @crtc: which irq to enable
 730          *
 731          * Disable vblank interrupts for @crtc.  If the device doesn't have
 732          * a hardware vblank counter, this routine should be a no-op, since
 733          * interrupts will have to stay on to keep the count accurate.
 734          */
 735         void (*disable_vblank) (struct drm_device *dev, int crtc);
 736
 737         /**
 738          * Called by \c drm_device_is_agp.  Typically used to determine if a
 739          * card is really attached to AGP or not.
 740          *
 741          * \param dev  DRM device handle
 742          *
 743          * \returns
 744          * One of three values is returned depending on whether or not the
 745          * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
 746          * (return of 1), or may or may not be AGP (return of 2).
 747          */
 748         int (*device_is_agp) (struct drm_device *dev);
 749
 750         /* these have to be filled in */
 751
 752         irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
 753         void (*irq_preinstall) (struct drm_device *dev);
 754         int (*irq_postinstall) (struct drm_device *dev);
 755         void (*irq_uninstall) (struct drm_device *dev);
 756         void (*reclaim_buffers) (struct drm_device *dev,
 757                                  struct drm_file * file_priv);
 758         void (*reclaim_buffers_locked) (struct drm_device *dev,
 759                                         struct drm_file *file_priv);
 760         void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
 761                                             struct drm_file *file_priv);
 762         resource_size_t (*get_map_ofs) (struct drm_local_map * map);
 763         resource_size_t (*get_reg_ofs) (struct drm_device *dev);
 764         void (*set_version) (struct drm_device *dev,
 765                              struct drm_set_version *sv);
 766
 767         /* Master routines */
 768         int (*master_create)(struct drm_device *dev, struct drm_master *master);
 769         void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
 770
 771         int (*proc_init)(struct drm_minor *minor);
 772         void (*proc_cleanup)(struct drm_minor *minor);
 773         int (*debugfs_init)(struct drm_minor *minor);
 774         void (*debugfs_cleanup)(struct drm_minor *minor);
 775
 776         /**
 777          * Driver-specific constructor for drm_gem_objects, to set up
 778          * obj->driver_private.
 779          *
 780          * Returns 0 on success.
 781          */
 782         int (*gem_init_object) (struct drm_gem_object *obj);
 783         void (*gem_free_object) (struct drm_gem_object *obj);
 784
 785         /* Driver private ops for this object */
 786         struct vm_operations_struct *gem_vm_ops;
 787
 788         int major;
 789         int minor;
 790         int patchlevel;
 791         char *name;
 792         char *desc;
 793         char *date;
 794
 795         u32 driver_features;
 796         int dev_priv_size;
 797         struct drm_ioctl_desc *ioctls;
 798         int num_ioctls;
 799         struct file_operations fops;
 800         struct pci_driver pci_driver;
 801         /* List of devices hanging off this driver */
 802         struct list_head device_list;
 803 };
 804
 805 #define DRM_MINOR_UNASSIGNED 0
 806 #define DRM_MINOR_LEGACY 1
 807 #define DRM_MINOR_CONTROL 2
 808 #define DRM_MINOR_RENDER 3
 809
 810
 811 /**
 812  * debugfs node list. This structure represents a debugfs file to
 813  * be created by the drm core
 814  */
 815 struct drm_debugfs_list {
 816         const char *name; /** file name */
 817         int (*show)(struct seq_file*, void*); /** show callback */
 818         u32 driver_features; /**< Required driver features for this entry */
 819 };
 820
 821 /**
 822  * debugfs node structure. This structure represents a debugfs file.
 823  */
 824 struct drm_debugfs_node {
 825         struct list_head list;
 826         struct drm_minor *minor;
 827         struct drm_debugfs_list *debugfs_ent;
 828         struct dentry *dent;
 829 };
 830
 831 /**
 832  * Info file list entry. This structure represents a debugfs or proc file to
 833  * be created by the drm core
 834  */
 835 struct drm_info_list {
 836         const char *name; /** file name */
 837         int (*show)(struct seq_file*, void*); /** show callback */
 838         u32 driver_features; /**< Required driver features for this entry */
 839         void *data;
 840 };
 841
 842 /**
 843  * debugfs node structure. This structure represents a debugfs file.
 844  */
 845 struct drm_info_node {
 846         struct list_head list;
 847         struct drm_minor *minor;
 848         struct drm_info_list *info_ent;
 849         struct dentry *dent;
 850 };
 851
 852 /**
 853  * DRM minor structure. This structure represents a drm minor number.
 854  */
 855 struct drm_minor {
 856         int index;                      /**< Minor device number */
 857         int type;                       /**< Control or render */
 858         dev_t device;                   /**< Device number for mknod */
 859         struct device kdev;             /**< Linux device */
 860         struct drm_device *dev;
 861
 862         struct proc_dir_entry *proc_root;  /**< proc directory entry */
 863         struct drm_info_node proc_nodes;
 864         struct dentry *debugfs_root;
 865         struct drm_info_node debugfs_nodes;
 866
 867         struct drm_master *master; /* currently active master for this node */
 868         struct list_head master_list;
 869         struct drm_mode_group mode_group;
 870 };
 871
 872 /**
 873  * DRM device structure. This structure represent a complete card that
 874  * may contain multiple heads.
 875  */
 876 struct drm_device {
 877         struct list_head driver_item;   /**< list of devices per driver */
 878         char *devname;                  /**< For /proc/interrupts */
 879         int if_version;                 /**< Highest interface version set */
 880
 881         /** \name Locks */
 882         /*@{ */
 883         spinlock_t count_lock;          /**< For inuse, drm_device::open_count, drm_device::buf_use */
 884         struct mutex struct_mutex;      /**< For others */
 885         /*@} */
 886
 887         /** \name Usage Counters */
 888         /*@{ */
 889         int open_count;                 /**< Outstanding files open */
 890         atomic_t ioctl_count;           /**< Outstanding IOCTLs pending */
 891         atomic_t vma_count;             /**< Outstanding vma areas open */
 892         int buf_use;                    /**< Buffers in use -- cannot alloc */
 893         atomic_t buf_alloc;             /**< Buffer allocation in progress */
 894         /*@} */
 895
 896         /** \name Performance counters */
 897         /*@{ */
 898         unsigned long counters;
 899         enum drm_stat_type types[15];
 900         atomic_t counts[15];
 901         /*@} */
 902
 903         struct list_head filelist;
 904
 905         /** \name Memory management */
 906         /*@{ */
 907         struct list_head maplist;       /**< Linked list of regions */
 908         int map_count;                  /**< Number of mappable regions */
 909         struct drm_open_hash map_hash;  /**< User token hash table for maps */
 910
 911         /** \name Context handle management */
 912         /*@{ */
 913         struct list_head ctxlist;       /**< Linked list of context handles */
 914         int ctx_count;                  /**< Number of context handles */
 915         struct mutex ctxlist_mutex;     /**< For ctxlist */
 916
 917         struct idr ctx_idr;
 918
 919         struct list_head vmalist;       /**< List of vmas (for debugging) */
 920
 921         /*@} */
 922
 923         /** \name DMA queues (contexts) */
 924         /*@{ */
 925         int queue_count;                /**< Number of active DMA queues */
 926         int queue_reserved;               /**< Number of reserved DMA queues */
 927         int queue_slots;                /**< Actual length of queuelist */
 928         struct drm_queue **queuelist;   /**< Vector of pointers to DMA queues */
 929         struct drm_device_dma *dma;             /**< Optional pointer for DMA support */
 930         /*@} */
 931
 932         /** \name Context support */
 933         /*@{ */
 934         int irq_enabled;                /**< True if irq handler is enabled */
 935         __volatile__ long context_flag; /**< Context swapping flag */
 936         __volatile__ long interrupt_flag; /**< Interruption handler flag */
 937         __volatile__ long dma_flag;     /**< DMA dispatch flag */
 938         struct timer_list timer;        /**< Timer for delaying ctx switch */
 939         wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
 940         int last_checked;               /**< Last context checked for DMA */
 941         int last_context;               /**< Last current context */
 942         unsigned long last_switch;      /**< jiffies at last context switch */
 943         /*@} */
 944
 945         struct work_struct work;
 946         /** \name VBLANK IRQ support */
 947         /*@{ */
 948
 949         /*
 950          * At load time, disabling the vblank interrupt won't be allowed since
 951          * old clients may not call the modeset ioctl and therefore misbehave.
 952          * Once the modeset ioctl *has* been called though, we can safely
 953          * disable them when unused.
 954          */
 955         int vblank_disable_allowed;
 956
 957         wait_queue_head_t *vbl_queue;   /**< VBLANK wait queue */
 958         atomic_t *_vblank_count;        /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
 959         spinlock_t vbl_lock;
 960         atomic_t *vblank_refcount;      /* number of users of vblank interruptsper crtc */
 961         u32 *last_vblank;               /* protected by dev->vbl_lock, used */
 962                                         /* for wraparound handling */
 963         int *vblank_enabled;            /* so we don't call enable more than
 964                                            once per disable */
 965         int *vblank_inmodeset;          /* Display driver is setting mode */
 966         u32 *last_vblank_wait;          /* Last vblank seqno waited per CRTC */
 967         struct timer_list vblank_disable_timer;
 968
 969         u32 max_vblank_count;           /**< size of vblank counter register */
 970
 971         /*@} */
 972         cycles_t ctx_start;
 973         cycles_t lck_start;
 974
 975         struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
 976         wait_queue_head_t buf_readers;  /**< Processes waiting to read */
 977         wait_queue_head_t buf_writers;  /**< Processes waiting to ctx switch */
 978
 979         struct drm_agp_head *agp;       /**< AGP data */
 980
 981         struct pci_dev *pdev;           /**< PCI device structure */
 982         int pci_vendor;                 /**< PCI vendor id */
 983         int pci_device;                 /**< PCI device id */
 984 #ifdef __alpha__
 985         struct pci_controller *hose;
 986 #endif
 987         struct drm_sg_mem *sg;  /**< Scatter gather memory */
 988         int num_crtcs;                  /**< Number of CRTCs on this device */
 989         void *dev_private;              /**< device private data */
 990         void *mm_private;
 991         struct address_space *dev_mapping;
 992         struct drm_sigdata sigdata;        /**< For block_all_signals */
 993         sigset_t sigmask;
 994
 995         struct drm_driver *driver;
 996         struct drm_local_map *agp_buffer_map;
 997         unsigned int agp_buffer_token;
 998         struct drm_minor *control;              /**< Control node for card */
 999         struct drm_minor *primary;              /**< render type primary screen head */
1000
1001         /** \name Drawable information */
1002         /*@{ */
1003         spinlock_t drw_lock;
1004         struct idr drw_idr;
1005         /*@} */
1006
1007         struct drm_mode_config mode_config;     /**< Current mode config */
1008
1009         /** \name GEM information */
1010         /*@{ */
1011         spinlock_t object_name_lock;
1012         struct idr object_name_idr;
1013         atomic_t object_count;
1014         atomic_t object_memory;
1015         atomic_t pin_count;
1016         atomic_t pin_memory;
1017         atomic_t gtt_count;
1018         atomic_t gtt_memory;
1019         uint32_t gtt_total;
1020         uint32_t invalidate_domains;    /* domains pending invalidation */
1021         uint32_t flush_domains;         /* domains pending flush */
1022         /*@} */
1023
1024 };
1025
1026 static inline int drm_dev_to_irq(struct drm_device *dev)
1027 {
1028         return dev->pdev->irq;
1029 }
1030
1031 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1032                                              int feature)
1033 {
1034         return ((dev->driver->driver_features & feature) ? 1 : 0);
1035 }
1036
1037 #ifdef __alpha__
1038 #define drm_get_pci_domain(dev) dev->hose->index
1039 #else
1040 #define drm_get_pci_domain(dev) 0
1041 #endif
1042
1043 #if __OS_HAS_AGP
1044 static inline int drm_core_has_AGP(struct drm_device *dev)
1045 {
1046         return drm_core_check_feature(dev, DRIVER_USE_AGP);
1047 }
1048 #else
1049 #define drm_core_has_AGP(dev) (0)
1050 #endif
1051
1052 #if __OS_HAS_MTRR
1053 static inline int drm_core_has_MTRR(struct drm_device *dev)
1054 {
1055         return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1056 }
1057
1058 #define DRM_MTRR_WC             MTRR_TYPE_WRCOMB
1059
1060 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1061                                unsigned int flags)
1062 {
1063         return mtrr_add(offset, size, flags, 1);
1064 }
1065
1066 static inline int drm_mtrr_del(int handle, unsigned long offset,
1067                                unsigned long size, unsigned int flags)
1068 {
1069         return mtrr_del(handle, offset, size);
1070 }
1071
1072 #else
1073 #define drm_core_has_MTRR(dev) (0)
1074
1075 #define DRM_MTRR_WC             0
1076
1077 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1078                                unsigned int flags)
1079 {
1080         return 0;
1081 }
1082
1083 static inline int drm_mtrr_del(int handle, unsigned long offset,
1084                                unsigned long size, unsigned int flags)
1085 {
1086         return 0;
1087 }
1088 #endif
1089
1090 /******************************************************************/
1091 /** \name Internal function definitions */
1092 /*@{*/
1093
1094                                 /* Driver support (drm_drv.h) */
1095 extern int drm_init(struct drm_driver *driver);
1096 extern void drm_exit(struct drm_driver *driver);
1097 extern int drm_ioctl(struct inode *inode, struct file *filp,
1098                      unsigned int cmd, unsigned long arg);
1099 extern long drm_compat_ioctl(struct file *filp,
1100                              unsigned int cmd, unsigned long arg);
1101 extern int drm_lastclose(struct drm_device *dev);
1102
1103                                 /* Device support (drm_fops.h) */
1104 extern int drm_open(struct inode *inode, struct file *filp);
1105 extern int drm_stub_open(struct inode *inode, struct file *filp);
1106 extern int drm_fasync(int fd, struct file *filp, int on);
1107 extern int drm_release(struct inode *inode, struct file *filp);
1108
1109                                 /* Mapping support (drm_vm.h) */
1110 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1111 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1112 extern void drm_vm_open_locked(struct vm_area_struct *vma);
1113 extern resource_size_t drm_core_get_map_ofs(struct drm_local_map * map);
1114 extern resource_size_t drm_core_get_reg_ofs(struct drm_device *dev);
1115 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1116
1117                                 /* Memory management support (drm_memory.h) */
1118 #include "drm_memory.h"
1119 extern void drm_mem_init(void);
1120 extern int drm_mem_info(char *buf, char **start, off_t offset,
1121                         int request, int *eof, void *data);
1122 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
1123
1124 extern DRM_AGP_MEM *drm_alloc_agp(struct drm_device *dev, int pages, u32 type);
1125 extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
1126 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1127 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1128                                        struct page **pages,
1129                                        unsigned long num_pages,
1130                                        uint32_t gtt_offset,
1131                                        uint32_t type);
1132 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1133
1134                                 /* Misc. IOCTL support (drm_ioctl.h) */
1135 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1136                             struct drm_file *file_priv);
1137 extern int drm_getunique(struct drm_device *dev, void *data,
1138                          struct drm_file *file_priv);
1139 extern int drm_setunique(struct drm_device *dev, void *data,
1140                          struct drm_file *file_priv);
1141 extern int drm_getmap(struct drm_device *dev, void *data,
1142                       struct drm_file *file_priv);
1143 extern int drm_getclient(struct drm_device *dev, void *data,
1144                          struct drm_file *file_priv);
1145 extern int drm_getstats(struct drm_device *dev, void *data,
1146                         struct drm_file *file_priv);
1147 extern int drm_setversion(struct drm_device *dev, void *data,
1148                           struct drm_file *file_priv);
1149 extern int drm_noop(struct drm_device *dev, void *data,
1150                     struct drm_file *file_priv);
1151
1152                                 /* Context IOCTL support (drm_context.h) */
1153 extern int drm_resctx(struct drm_device *dev, void *data,
1154                       struct drm_file *file_priv);
1155 extern int drm_addctx(struct drm_device *dev, void *data,
1156                       struct drm_file *file_priv);
1157 extern int drm_modctx(struct drm_device *dev, void *data,
1158                       struct drm_file *file_priv);
1159 extern int drm_getctx(struct drm_device *dev, void *data,
1160                       struct drm_file *file_priv);
1161 extern int drm_switchctx(struct drm_device *dev, void *data,
1162                          struct drm_file *file_priv);
1163 extern int drm_newctx(struct drm_device *dev, void *data,
1164                       struct drm_file *file_priv);
1165 extern int drm_rmctx(struct drm_device *dev, void *data,
1166                      struct drm_file *file_priv);
1167
1168 extern int drm_ctxbitmap_init(struct drm_device *dev);
1169 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1170 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1171
1172 extern int drm_setsareactx(struct drm_device *dev, void *data,
1173                            struct drm_file *file_priv);
1174 extern int drm_getsareactx(struct drm_device *dev, void *data,
1175                            struct drm_file *file_priv);
1176
1177                                 /* Drawable IOCTL support (drm_drawable.h) */
1178 extern int drm_adddraw(struct drm_device *dev, void *data,
1179                        struct drm_file *file_priv);
1180 extern int drm_rmdraw(struct drm_device *dev, void *data,
1181                       struct drm_file *file_priv);
1182 extern int drm_update_drawable_info(struct drm_device *dev, void *data,
1183                                     struct drm_file *file_priv);
1184 extern struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev,
1185                                                   drm_drawable_t id);
1186 extern void drm_drawable_free_all(struct drm_device *dev);
1187
1188                                 /* Authentication IOCTL support (drm_auth.h) */
1189 extern int drm_getmagic(struct drm_device *dev, void *data,
1190                         struct drm_file *file_priv);
1191 extern int drm_authmagic(struct drm_device *dev, void *data,
1192                          struct drm_file *file_priv);
1193
1194 /* Cache management (drm_cache.c) */
1195 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1196
1197                                 /* Locking IOCTL support (drm_lock.h) */
1198 extern int drm_lock(struct drm_device *dev, void *data,
1199                     struct drm_file *file_priv);
1200 extern int drm_unlock(struct drm_device *dev, void *data,
1201                       struct drm_file *file_priv);
1202 extern int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
1203 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1204 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1205 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1206
1207 /*
1208  * These are exported to drivers so that they can implement fencing using
1209  * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1210  */
1211
1212 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1213
1214                                 /* Buffer management support (drm_bufs.h) */
1215 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1216 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1217 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1218                       unsigned int size, enum drm_map_type type,
1219                       enum drm_map_flags flags, struct drm_local_map **map_ptr);
1220 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1221                             struct drm_file *file_priv);
1222 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1223 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1224 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1225                            struct drm_file *file_priv);
1226 extern int drm_addbufs(struct drm_device *dev, void *data,
1227                        struct drm_file *file_priv);
1228 extern int drm_infobufs(struct drm_device *dev, void *data,
1229                         struct drm_file *file_priv);
1230 extern int drm_markbufs(struct drm_device *dev, void *data,
1231                         struct drm_file *file_priv);
1232 extern int drm_freebufs(struct drm_device *dev, void *data,
1233                         struct drm_file *file_priv);
1234 extern int drm_mapbufs(struct drm_device *dev, void *data,
1235                        struct drm_file *file_priv);
1236 extern int drm_order(unsigned long size);
1237 extern resource_size_t drm_get_resource_start(struct drm_device *dev,
1238                                               unsigned int resource);
1239 extern resource_size_t drm_get_resource_len(struct drm_device *dev,
1240                                             unsigned int resource);
1241
1242                                 /* DMA support (drm_dma.h) */
1243 extern int drm_dma_setup(struct drm_device *dev);
1244 extern void drm_dma_takedown(struct drm_device *dev);
1245 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1246 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1247                                      struct drm_file *filp);
1248
1249                                 /* IRQ support (drm_irq.h) */
1250 extern int drm_control(struct drm_device *dev, void *data,
1251                        struct drm_file *file_priv);
1252 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
1253 extern int drm_irq_install(struct drm_device *dev);
1254 extern int drm_irq_uninstall(struct drm_device *dev);
1255 extern void drm_driver_irq_preinstall(struct drm_device *dev);
1256 extern void drm_driver_irq_postinstall(struct drm_device *dev);
1257 extern void drm_driver_irq_uninstall(struct drm_device *dev);
1258
1259 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1260 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1261                            struct drm_file *filp);
1262 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1263 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1264 extern void drm_handle_vblank(struct drm_device *dev, int crtc);
1265 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1266 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1267 extern void drm_vblank_cleanup(struct drm_device *dev);
1268 /* Modesetting support */
1269 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1270 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1271 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1272                            struct drm_file *file_priv);
1273
1274                                 /* AGP/GART support (drm_agpsupport.h) */
1275 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1276 extern int drm_agp_acquire(struct drm_device *dev);
1277 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1278                                  struct drm_file *file_priv);
1279 extern int drm_agp_release(struct drm_device *dev);
1280 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1281                                  struct drm_file *file_priv);
1282 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1283 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1284                                 struct drm_file *file_priv);
1285 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1286 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1287                         struct drm_file *file_priv);
1288 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1289 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1290                          struct drm_file *file_priv);
1291 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1292 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1293                         struct drm_file *file_priv);
1294 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1295 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1296                           struct drm_file *file_priv);
1297 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1298 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1299                         struct drm_file *file_priv);
1300 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge, size_t pages, u32 type);
1301 extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
1302 extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
1303 extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
1304 extern void drm_agp_chipset_flush(struct drm_device *dev);
1305
1306                                 /* Stub support (drm_stub.h) */
1307 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1308                                struct drm_file *file_priv);
1309 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1310                                 struct drm_file *file_priv);
1311 struct drm_master *drm_master_create(struct drm_minor *minor);
1312 extern struct drm_master *drm_master_get(struct drm_master *master);
1313 extern void drm_master_put(struct drm_master **master);
1314 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
1315                        struct drm_driver *driver);
1316 extern void drm_put_dev(struct drm_device *dev);
1317 extern int drm_put_minor(struct drm_minor **minor);
1318 extern unsigned int drm_debug;
1319
1320 extern struct class *drm_class;
1321 extern struct proc_dir_entry *drm_proc_root;
1322 extern struct dentry *drm_debugfs_root;
1323
1324 extern struct idr drm_minors_idr;
1325
1326 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1327
1328                                 /* Proc support (drm_proc.h) */
1329 extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1330                          struct proc_dir_entry *root);
1331 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1332
1333                                 /* Debugfs support */
1334 #if defined(CONFIG_DEBUG_FS)
1335 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1336                             struct dentry *root);
1337 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1338                                     struct dentry *root, struct drm_minor *minor);
1339 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1340                                     struct drm_minor *minor);
1341 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1342 #endif
1343
1344                                 /* Info file support */
1345 extern int drm_name_info(struct seq_file *m, void *data);
1346 extern int drm_vm_info(struct seq_file *m, void *data);
1347 extern int drm_queues_info(struct seq_file *m, void *data);
1348 extern int drm_bufs_info(struct seq_file *m, void *data);
1349 extern int drm_vblank_info(struct seq_file *m, void *data);
1350 extern int drm_clients_info(struct seq_file *m, void* data);
1351 extern int drm_gem_name_info(struct seq_file *m, void *data);
1352 extern int drm_gem_object_info(struct seq_file *m, void* data);
1353
1354 #if DRM_DEBUG_CODE
1355 extern int drm_vma_info(struct seq_file *m, void *data);
1356 #endif
1357
1358                                 /* Scatter Gather Support (drm_scatter.h) */
1359 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1360 extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1361                         struct drm_file *file_priv);
1362 extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1363 extern int drm_sg_free(struct drm_device *dev, void *data,
1364                        struct drm_file *file_priv);
1365
1366                                /* ATI PCIGART support (ati_pcigart.h) */
1367 extern int drm_ati_pcigart_init(struct drm_device *dev,
1368                                 struct drm_ati_pcigart_info * gart_info);
1369 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1370                                    struct drm_ati_pcigart_info * gart_info);
1371
1372 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1373                                        size_t align, dma_addr_t maxaddr);
1374 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1375 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1376
1377                                /* sysfs support (drm_sysfs.c) */
1378 struct drm_sysfs_class;
1379 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1380 extern void drm_sysfs_destroy(void);
1381 extern int drm_sysfs_device_add(struct drm_minor *minor);
1382 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1383 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1384 extern char *drm_get_connector_status_name(enum drm_connector_status status);
1385 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1386 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1387
1388 /*
1389  * Basic memory manager support (drm_mm.c)
1390  */
1391 extern struct drm_mm_node *drm_mm_get_block(struct drm_mm_node * parent,
1392                                        unsigned long size,
1393                                        unsigned alignment);
1394 extern void drm_mm_put_block(struct drm_mm_node * cur);
1395 extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, unsigned long size,
1396                                          unsigned alignment, int best_match);
1397 extern int drm_mm_init(struct drm_mm *mm, unsigned long start, unsigned long size);
1398 extern void drm_mm_takedown(struct drm_mm *mm);
1399 extern int drm_mm_clean(struct drm_mm *mm);
1400 extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
1401 extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, unsigned long size);
1402 extern int drm_mm_add_space_to_tail(struct drm_mm *mm, unsigned long size);
1403
1404 /* Graphics Execution Manager library functions (drm_gem.c) */
1405 int drm_gem_init(struct drm_device *dev);
1406 void drm_gem_destroy(struct drm_device *dev);
1407 void drm_gem_object_free(struct kref *kref);
1408 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1409                                             size_t size);
1410 void drm_gem_object_handle_free(struct kref *kref);
1411 void drm_gem_vm_open(struct vm_area_struct *vma);
1412 void drm_gem_vm_close(struct vm_area_struct *vma);
1413 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1414
1415 static inline void
1416 drm_gem_object_reference(struct drm_gem_object *obj)
1417 {
1418         kref_get(&obj->refcount);
1419 }
1420
1421 static inline void
1422 drm_gem_object_unreference(struct drm_gem_object *obj)
1423 {
1424         if (obj == NULL)
1425                 return;
1426
1427         kref_put(&obj->refcount, drm_gem_object_free);
1428 }
1429
1430 int drm_gem_handle_create(struct drm_file *file_priv,
1431                           struct drm_gem_object *obj,
1432                           int *handlep);
1433
1434 static inline void
1435 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1436 {
1437         drm_gem_object_reference(obj);
1438         kref_get(&obj->handlecount);
1439 }
1440
1441 static inline void
1442 drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1443 {
1444         if (obj == NULL)
1445                 return;
1446
1447         /*
1448          * Must bump handle count first as this may be the last
1449          * ref, in which case the object would disappear before we
1450          * checked for a name
1451          */
1452         kref_put(&obj->handlecount, drm_gem_object_handle_free);
1453         drm_gem_object_unreference(obj);
1454 }
1455
1456 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1457                                              struct drm_file *filp,
1458                                              int handle);
1459 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1460                         struct drm_file *file_priv);
1461 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1462                         struct drm_file *file_priv);
1463 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1464                        struct drm_file *file_priv);
1465 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1466 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1467
1468 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1469 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1470 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1471
1472 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1473                                                          unsigned int token)
1474 {
1475         struct drm_map_list *_entry;
1476         list_for_each_entry(_entry, &dev->maplist, head)
1477             if (_entry->user_token == token)
1478                 return _entry->map;
1479         return NULL;
1480 }
1481
1482 static __inline__ int drm_device_is_agp(struct drm_device *dev)
1483 {
1484         if (dev->driver->device_is_agp != NULL) {
1485                 int err = (*dev->driver->device_is_agp) (dev);
1486
1487                 if (err != 2) {
1488                         return err;
1489                 }
1490         }
1491
1492         return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1493 }
1494
1495 static __inline__ int drm_device_is_pcie(struct drm_device *dev)
1496 {
1497         return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1498 }
1499
1500 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1501 {
1502 }
1503
1504 #ifndef DEBUG_MEMORY
1505 /** Wrapper around kmalloc() */
1506 static __inline__ void *drm_alloc(size_t size, int area)
1507 {
1508         return kmalloc(size, GFP_KERNEL);
1509 }
1510
1511 /** Wrapper around kfree() */
1512 static __inline__ void drm_free(void *pt, size_t size, int area)
1513 {
1514         kfree(pt);
1515 }
1516
1517 /** Wrapper around kcalloc() */
1518 static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
1519 {
1520         return kcalloc(nmemb, size, GFP_KERNEL);
1521 }
1522
1523 static __inline__ void *drm_calloc_large(size_t nmemb, size_t size)
1524 {
1525         u8 *addr;
1526
1527         if (size <= PAGE_SIZE)
1528             return kcalloc(nmemb, size, GFP_KERNEL);
1529
1530         addr = vmalloc(nmemb * size);
1531         if (!addr)
1532                 return NULL;
1533
1534         memset(addr, 0, nmemb * size);
1535
1536         return addr;
1537 }
1538
1539 static __inline void drm_free_large(void *ptr)
1540 {
1541         if (!is_vmalloc_addr(ptr))
1542                 return kfree(ptr);
1543
1544         vfree(ptr);
1545 }
1546 #else
1547 extern void *drm_alloc(size_t size, int area);
1548 extern void drm_free(void *pt, size_t size, int area);
1549 extern void *drm_calloc(size_t nmemb, size_t size, int area);
1550 #endif
1551
1552 /*@}*/
1553
1554 #endif                          /* __KERNEL__ */
1555 #endif