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
 108 /***********************************************************************/
 109 /** \name Begin the DRM... */
 110 /*@{*/
 111
 112 #define DRM_DEBUG_CODE 2          /**< Include debugging code if > 1, then
 113                                      also include looping detection. */
 114
 115 #define DRM_MAGIC_HASH_ORDER  4  /**< Size of key hash table. Must be power of 2. */
 116 #define DRM_KERNEL_CONTEXT    0  /**< Change drm_resctx if changed */
 117 #define DRM_RESERVED_CONTEXTS 1  /**< Change drm_resctx if changed */
 118 #define DRM_LOOPING_LIMIT     5000000
 119 #define DRM_TIME_SLICE        (HZ/20)  /**< Time slice for GLXContexts */
 120 #define DRM_LOCK_SLICE        1 /**< Time slice for lock, in jiffies */
 121
 122 #define DRM_FLAG_DEBUG    0x01
 123
 124 #define DRM_MEM_DMA        0
 125 #define DRM_MEM_SAREA      1
 126 #define DRM_MEM_DRIVER     2
 127 #define DRM_MEM_MAGIC      3
 128 #define DRM_MEM_IOCTLS     4
 129 #define DRM_MEM_MAPS       5
 130 #define DRM_MEM_VMAS       6
 131 #define DRM_MEM_BUFS       7
 132 #define DRM_MEM_SEGS       8
 133 #define DRM_MEM_PAGES      9
 134 #define DRM_MEM_FILES     10
 135 #define DRM_MEM_QUEUES    11
 136 #define DRM_MEM_CMDS      12
 137 #define DRM_MEM_MAPPINGS  13
 138 #define DRM_MEM_BUFLISTS  14
 139 #define DRM_MEM_AGPLISTS  15
 140 #define DRM_MEM_TOTALAGP  16
 141 #define DRM_MEM_BOUNDAGP  17
 142 #define DRM_MEM_CTXBITMAP 18
 143 #define DRM_MEM_STUB      19
 144 #define DRM_MEM_SGLISTS   20
 145 #define DRM_MEM_CTXLIST   21
 146 #define DRM_MEM_MM        22
 147 #define DRM_MEM_HASHTAB   23
 148
 149 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
 150 #define DRM_MAP_HASH_OFFSET 0x10000000
 151
 152 /*@}*/
 153
 154 /***********************************************************************/
 155 /** \name Macros to make printk easier */
 156 /*@{*/
 157
 158 /**
 159  * Error output.
 160  *
 161  * \param fmt printf() like format string.
 162  * \param arg arguments
 163  */
 164 #define DRM_ERROR(fmt, arg...) \
 165         printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)
 166
 167 /**
 168  * Memory error output.
 169  *
 170  * \param area memory area where the error occurred.
 171  * \param fmt printf() like format string.
 172  * \param arg arguments
 173  */
 174 #define DRM_MEM_ERROR(area, fmt, arg...) \
 175         printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \
 176                drm_mem_stats[area].name , ##arg)
 177
 178 #define DRM_INFO(fmt, arg...)  printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
 179
 180 /**
 181  * Debug output.
 182  *
 183  * \param fmt printf() like format string.
 184  * \param arg arguments
 185  */
 186 #if DRM_DEBUG_CODE
 187 #define DRM_DEBUG(fmt, arg...)                                          \
 188         do {                                                            \
 189                 if ( drm_debug )                        \
 190                         printk(KERN_DEBUG                               \
 191                                "[" DRM_NAME ":%s] " fmt ,       \
 192                                __func__ , ##arg);                       \
 193         } while (0)
 194 #else
 195 #define DRM_DEBUG(fmt, arg...)           do { } while (0)
 196 #endif
 197
 198 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
 199
 200 #define DRM_PROC_PRINT(fmt, arg...)                                     \
 201    len += sprintf(&buf[len], fmt , ##arg);                              \
 202    if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
 203
 204 #define DRM_PROC_PRINT_RET(ret, fmt, arg...)                            \
 205    len += sprintf(&buf[len], fmt , ##arg);                              \
 206    if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
 207
 208 /*@}*/
 209
 210 /***********************************************************************/
 211 /** \name Internal types and structures */
 212 /*@{*/
 213
 214 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
 215
 216 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
 217 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
 218 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
 219
 220 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 221 /**
 222  * Get the private SAREA mapping.
 223  *
 224  * \param _dev DRM device.
 225  * \param _ctx context number.
 226  * \param _map output mapping.
 227  */
 228 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do {       \
 229         (_map) = (_dev)->context_sareas[_ctx];          \
 230 } while(0)
 231
 232 /**
 233  * Test that the hardware lock is held by the caller, returning otherwise.
 234  *
 235  * \param dev DRM device.
 236  * \param filp file pointer of the caller.
 237  */
 238 #define LOCK_TEST_WITH_RETURN( dev, file_priv )                         \
 239 do {                                                                    \
 240         if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||           \
 241              dev->lock.file_priv != file_priv ) {                       \
 242                 DRM_ERROR( "%s called without lock held, held  %d owner %p %p\n",\
 243                            __func__, _DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ),\
 244                            dev->lock.file_priv, file_priv );            \
 245                 return -EINVAL;                                         \
 246         }                                                               \
 247 } while (0)
 248
 249 /**
 250  * Copy and IOCTL return string to user space
 251  */
 252 #define DRM_COPY( name, value )                                         \
 253         len = strlen( value );                                          \
 254         if ( len > name##_len ) len = name##_len;                       \
 255         name##_len = strlen( value );                                   \
 256         if ( len && name ) {                                            \
 257                 if ( copy_to_user( name, value, len ) )                 \
 258                         return -EFAULT;                                 \
 259         }
 260
 261 /**
 262  * Ioctl function type.
 263  *
 264  * \param inode device inode.
 265  * \param file_priv DRM file private pointer.
 266  * \param cmd command.
 267  * \param arg argument.
 268  */
 269 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
 270                         struct drm_file *file_priv);
 271
 272 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
 273                                unsigned long arg);
 274
 275 #define DRM_AUTH        0x1
 276 #define DRM_MASTER      0x2
 277 #define DRM_ROOT_ONLY   0x4
 278
 279 struct drm_ioctl_desc {
 280         unsigned int cmd;
 281         drm_ioctl_t *func;
 282         int flags;
 283 };
 284
 285 /**
 286  * Creates a driver or general drm_ioctl_desc array entry for the given
 287  * ioctl, for use by drm_ioctl().
 288  */
 289 #define DRM_IOCTL_DEF(ioctl, func, flags) \
 290         [DRM_IOCTL_NR(ioctl)] = {ioctl, func, flags}
 291
 292 struct drm_magic_entry {
 293         struct list_head head;
 294         struct drm_hash_item hash_item;
 295         struct drm_file *priv;
 296 };
 297
 298 struct drm_vma_entry {
 299         struct list_head head;
 300         struct vm_area_struct *vma;
 301         pid_t pid;
 302 };
 303
 304 /**
 305  * DMA buffer.
 306  */
 307 struct drm_buf {
 308         int idx;                       /**< Index into master buflist */
 309         int total;                     /**< Buffer size */
 310         int order;                     /**< log-base-2(total) */
 311         int used;                      /**< Amount of buffer in use (for DMA) */
 312         unsigned long offset;          /**< Byte offset (used internally) */
 313         void *address;                 /**< Address of buffer */
 314         unsigned long bus_address;     /**< Bus address of buffer */
 315         struct drm_buf *next;          /**< Kernel-only: used for free list */
 316         __volatile__ int waiting;      /**< On kernel DMA queue */
 317         __volatile__ int pending;      /**< On hardware DMA queue */
 318         wait_queue_head_t dma_wait;    /**< Processes waiting */
 319         struct drm_file *file_priv;    /**< Private of holding file descr */
 320         int context;                   /**< Kernel queue for this buffer */
 321         int while_locked;              /**< Dispatch this buffer while locked */
 322         enum {
 323                 DRM_LIST_NONE = 0,
 324                 DRM_LIST_FREE = 1,
 325                 DRM_LIST_WAIT = 2,
 326                 DRM_LIST_PEND = 3,
 327                 DRM_LIST_PRIO = 4,
 328                 DRM_LIST_RECLAIM = 5
 329         } list;                        /**< Which list we're on */
 330
 331         int dev_priv_size;               /**< Size of buffer private storage */
 332         void *dev_private;               /**< Per-buffer private storage */
 333 };
 334
 335 /** bufs is one longer than it has to be */
 336 struct drm_waitlist {
 337         int count;                      /**< Number of possible buffers */
 338         struct drm_buf **bufs;          /**< List of pointers to buffers */
 339         struct drm_buf **rp;                    /**< Read pointer */
 340         struct drm_buf **wp;                    /**< Write pointer */
 341         struct drm_buf **end;           /**< End pointer */
 342         spinlock_t read_lock;
 343         spinlock_t write_lock;
 344 };
 345
 346 struct drm_freelist {
 347         int initialized;               /**< Freelist in use */
 348         atomic_t count;                /**< Number of free buffers */
 349         struct drm_buf *next;          /**< End pointer */
 350
 351         wait_queue_head_t waiting;     /**< Processes waiting on free bufs */
 352         int low_mark;                  /**< Low water mark */
 353         int high_mark;                 /**< High water mark */
 354         atomic_t wfh;                  /**< If waiting for high mark */
 355         spinlock_t lock;
 356 };
 357
 358 typedef struct drm_dma_handle {
 359         dma_addr_t busaddr;
 360         void *vaddr;
 361         size_t size;
 362 } drm_dma_handle_t;
 363
 364 /**
 365  * Buffer entry.  There is one of this for each buffer size order.
 366  */
 367 struct drm_buf_entry {
 368         int buf_size;                   /**< size */
 369         int buf_count;                  /**< number of buffers */
 370         struct drm_buf *buflist;                /**< buffer list */
 371         int seg_count;
 372         int page_order;
 373         struct drm_dma_handle **seglist;
 374
 375         struct drm_freelist freelist;
 376 };
 377
 378 /** File private data */
 379 struct drm_file {
 380         int authenticated;
 381         int master;
 382         pid_t pid;
 383         uid_t uid;
 384         drm_magic_t magic;
 385         unsigned long ioctl_count;
 386         struct list_head lhead;
 387         struct drm_minor *minor;
 388         int remove_auth_on_close;
 389         unsigned long lock_count;
 390         struct file *filp;
 391         void *driver_priv;
 392 };
 393
 394 /** Wait queue */
 395 struct drm_queue {
 396         atomic_t use_count;             /**< Outstanding uses (+1) */
 397         atomic_t finalization;          /**< Finalization in progress */
 398         atomic_t block_count;           /**< Count of processes waiting */
 399         atomic_t block_read;            /**< Queue blocked for reads */
 400         wait_queue_head_t read_queue;   /**< Processes waiting on block_read */
 401         atomic_t block_write;           /**< Queue blocked for writes */
 402         wait_queue_head_t write_queue;  /**< Processes waiting on block_write */
 403         atomic_t total_queued;          /**< Total queued statistic */
 404         atomic_t total_flushed;         /**< Total flushes statistic */
 405         atomic_t total_locks;           /**< Total locks statistics */
 406         enum drm_ctx_flags flags;       /**< Context preserving and 2D-only */
 407         struct drm_waitlist waitlist;   /**< Pending buffers */
 408         wait_queue_head_t flush_queue;  /**< Processes waiting until flush */
 409 };
 410
 411 /**
 412  * Lock data.
 413  */
 414 struct drm_lock_data {
 415         struct drm_hw_lock *hw_lock;    /**< Hardware lock */
 416         /** Private of lock holder's file (NULL=kernel) */
 417         struct drm_file *file_priv;
 418         wait_queue_head_t lock_queue;   /**< Queue of blocked processes */
 419         unsigned long lock_time;        /**< Time of last lock in jiffies */
 420         spinlock_t spinlock;
 421         uint32_t kernel_waiters;
 422         uint32_t user_waiters;
 423         int idle_has_lock;
 424 };
 425
 426 /**
 427  * DMA data.
 428  */
 429 struct drm_device_dma {
 430
 431         struct drm_buf_entry bufs[DRM_MAX_ORDER + 1];   /**< buffers, grouped by their size order */
 432         int buf_count;                  /**< total number of buffers */
 433         struct drm_buf **buflist;               /**< Vector of pointers into drm_device_dma::bufs */
 434         int seg_count;
 435         int page_count;                 /**< number of pages */
 436         unsigned long *pagelist;        /**< page list */
 437         unsigned long byte_count;
 438         enum {
 439                 _DRM_DMA_USE_AGP = 0x01,
 440                 _DRM_DMA_USE_SG = 0x02,
 441                 _DRM_DMA_USE_FB = 0x04,
 442                 _DRM_DMA_USE_PCI_RO = 0x08
 443         } flags;
 444
 445 };
 446
 447 /**
 448  * AGP memory entry.  Stored as a doubly linked list.
 449  */
 450 struct drm_agp_mem {
 451         unsigned long handle;           /**< handle */
 452         DRM_AGP_MEM *memory;
 453         unsigned long bound;            /**< address */
 454         int pages;
 455         struct list_head head;
 456 };
 457
 458 /**
 459  * AGP data.
 460  *
 461  * \sa drm_agp_init() and drm_device::agp.
 462  */
 463 struct drm_agp_head {
 464         DRM_AGP_KERN agp_info;          /**< AGP device information */
 465         struct list_head memory;
 466         unsigned long mode;             /**< AGP mode */
 467         struct agp_bridge_data *bridge;
 468         int enabled;                    /**< whether the AGP bus as been enabled */
 469         int acquired;                   /**< whether the AGP device has been acquired */
 470         unsigned long base;
 471         int agp_mtrr;
 472         int cant_use_aperture;
 473         unsigned long page_mask;
 474 };
 475
 476 /**
 477  * Scatter-gather memory.
 478  */
 479 struct drm_sg_mem {
 480         unsigned long handle;
 481         void *virtual;
 482         int pages;
 483         struct page **pagelist;
 484         dma_addr_t *busaddr;
 485 };
 486
 487 struct drm_sigdata {
 488         int context;
 489         struct drm_hw_lock *lock;
 490 };
 491
 492
 493 /*
 494  * Generic memory manager structs
 495  */
 496
 497 struct drm_mm_node {
 498         struct list_head fl_entry;
 499         struct list_head ml_entry;
 500         int free;
 501         unsigned long start;
 502         unsigned long size;
 503         struct drm_mm *mm;
 504         void *private;
 505 };
 506
 507 struct drm_mm {
 508         struct list_head fl_entry;
 509         struct list_head ml_entry;
 510 };
 511
 512
 513 /**
 514  * Mappings list
 515  */
 516 struct drm_map_list {
 517         struct list_head head;          /**< list head */
 518         struct drm_hash_item hash;
 519         struct drm_map *map;                    /**< mapping */
 520         uint64_t user_token;
 521 };
 522
 523 typedef struct drm_map drm_local_map_t;
 524
 525 /**
 526  * Context handle list
 527  */
 528 struct drm_ctx_list {
 529         struct list_head head;          /**< list head */
 530         drm_context_t handle;           /**< context handle */
 531         struct drm_file *tag;           /**< associated fd private data */
 532 };
 533
 534 struct drm_vbl_sig {
 535         struct list_head head;
 536         unsigned int sequence;
 537         struct siginfo info;
 538         struct task_struct *task;
 539 };
 540
 541 /* location of GART table */
 542 #define DRM_ATI_GART_MAIN 1
 543 #define DRM_ATI_GART_FB   2
 544
 545 #define DRM_ATI_GART_PCI 1
 546 #define DRM_ATI_GART_PCIE 2
 547 #define DRM_ATI_GART_IGP 3
 548
 549 struct drm_ati_pcigart_info {
 550         int gart_table_location;
 551         int gart_reg_if;
 552         void *addr;
 553         dma_addr_t bus_addr;
 554         dma_addr_t table_mask;
 555         struct drm_dma_handle *table_handle;
 556         drm_local_map_t mapping;
 557         int table_size;
 558 };
 559
 560 /**
 561  * DRM driver structure. This structure represent the common code for
 562  * a family of cards. There will one drm_device for each card present
 563  * in this family
 564  */
 565 struct drm_driver {
 566         int (*load) (struct drm_device *, unsigned long flags);
 567         int (*firstopen) (struct drm_device *);
 568         int (*open) (struct drm_device *, struct drm_file *);
 569         void (*preclose) (struct drm_device *, struct drm_file *file_priv);
 570         void (*postclose) (struct drm_device *, struct drm_file *);
 571         void (*lastclose) (struct drm_device *);
 572         int (*unload) (struct drm_device *);
 573         int (*suspend) (struct drm_device *, pm_message_t state);
 574         int (*resume) (struct drm_device *);
 575         int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
 576         void (*dma_ready) (struct drm_device *);
 577         int (*dma_quiescent) (struct drm_device *);
 578         int (*context_ctor) (struct drm_device *dev, int context);
 579         int (*context_dtor) (struct drm_device *dev, int context);
 580         int (*kernel_context_switch) (struct drm_device *dev, int old,
 581                                       int new);
 582         void (*kernel_context_switch_unlock) (struct drm_device *dev);
 583         int (*vblank_wait) (struct drm_device *dev, unsigned int *sequence);
 584         int (*vblank_wait2) (struct drm_device *dev, unsigned int *sequence);
 585         int (*dri_library_name) (struct drm_device *dev, char *buf);
 586
 587         /**
 588          * Called by \c drm_device_is_agp.  Typically used to determine if a
 589          * card is really attached to AGP or not.
 590          *
 591          * \param dev  DRM device handle
 592          *
 593          * \returns
 594          * One of three values is returned depending on whether or not the
 595          * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
 596          * (return of 1), or may or may not be AGP (return of 2).
 597          */
 598         int (*device_is_agp) (struct drm_device *dev);
 599
 600         /* these have to be filled in */
 601
 602         irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
 603         void (*irq_preinstall) (struct drm_device *dev);
 604         void (*irq_postinstall) (struct drm_device *dev);
 605         void (*irq_uninstall) (struct drm_device *dev);
 606         void (*reclaim_buffers) (struct drm_device *dev,
 607                                  struct drm_file * file_priv);
 608         void (*reclaim_buffers_locked) (struct drm_device *dev,
 609                                         struct drm_file *file_priv);
 610         void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
 611                                             struct drm_file *file_priv);
 612         unsigned long (*get_map_ofs) (struct drm_map * map);
 613         unsigned long (*get_reg_ofs) (struct drm_device *dev);
 614         void (*set_version) (struct drm_device *dev,
 615                              struct drm_set_version *sv);
 616
 617         int major;
 618         int minor;
 619         int patchlevel;
 620         char *name;
 621         char *desc;
 622         char *date;
 623
 624         u32 driver_features;
 625         int dev_priv_size;
 626         struct drm_ioctl_desc *ioctls;
 627         int num_ioctls;
 628         struct file_operations fops;
 629         struct pci_driver pci_driver;
 630 };
 631
 632 #define DRM_MINOR_UNASSIGNED 0
 633 #define DRM_MINOR_LEGACY 1
 634
 635 /**
 636  * DRM minor structure. This structure represents a drm minor number.
 637  */
 638 struct drm_minor {
 639         int index;                      /**< Minor device number */
 640         int type;                       /**< Control or render */
 641         dev_t device;                   /**< Device number for mknod */
 642         struct device kdev;             /**< Linux device */
 643         struct drm_device *dev;
 644         struct proc_dir_entry *dev_root;  /**< proc directory entry */
 645 };
 646
 647 /**
 648  * DRM device structure. This structure represent a complete card that
 649  * may contain multiple heads.
 650  */
 651 struct drm_device {
 652         char *unique;                   /**< Unique identifier: e.g., busid */
 653         int unique_len;                 /**< Length of unique field */
 654         char *devname;                  /**< For /proc/interrupts */
 655         int if_version;                 /**< Highest interface version set */
 656
 657         int blocked;                    /**< Blocked due to VC switch? */
 658
 659         /** \name Locks */
 660         /*@{ */
 661         spinlock_t count_lock;          /**< For inuse, drm_device::open_count, drm_device::buf_use */
 662         struct mutex struct_mutex;      /**< For others */
 663         /*@} */
 664
 665         /** \name Usage Counters */
 666         /*@{ */
 667         int open_count;                 /**< Outstanding files open */
 668         atomic_t ioctl_count;           /**< Outstanding IOCTLs pending */
 669         atomic_t vma_count;             /**< Outstanding vma areas open */
 670         int buf_use;                    /**< Buffers in use -- cannot alloc */
 671         atomic_t buf_alloc;             /**< Buffer allocation in progress */
 672         /*@} */
 673
 674         /** \name Performance counters */
 675         /*@{ */
 676         unsigned long counters;
 677         enum drm_stat_type types[15];
 678         atomic_t counts[15];
 679         /*@} */
 680
 681         /** \name Authentication */
 682         /*@{ */
 683         struct list_head filelist;
 684         struct drm_open_hash magiclist; /**< magic hash table */
 685         struct list_head magicfree;
 686         /*@} */
 687
 688         /** \name Memory management */
 689         /*@{ */
 690         struct list_head maplist;       /**< Linked list of regions */
 691         int map_count;                  /**< Number of mappable regions */
 692         struct drm_open_hash map_hash;  /**< User token hash table for maps */
 693
 694         /** \name Context handle management */
 695         /*@{ */
 696         struct list_head ctxlist;       /**< Linked list of context handles */
 697         int ctx_count;                  /**< Number of context handles */
 698         struct mutex ctxlist_mutex;     /**< For ctxlist */
 699
 700         struct idr ctx_idr;
 701
 702         struct list_head vmalist;       /**< List of vmas (for debugging) */
 703         struct drm_lock_data lock;      /**< Information on hardware lock */
 704         /*@} */
 705
 706         /** \name DMA queues (contexts) */
 707         /*@{ */
 708         int queue_count;                /**< Number of active DMA queues */
 709         int queue_reserved;               /**< Number of reserved DMA queues */
 710         int queue_slots;                /**< Actual length of queuelist */
 711         struct drm_queue **queuelist;   /**< Vector of pointers to DMA queues */
 712         struct drm_device_dma *dma;             /**< Optional pointer for DMA support */
 713         /*@} */
 714
 715         /** \name Context support */
 716         /*@{ */
 717         int irq;                        /**< Interrupt used by board */
 718         int irq_enabled;                /**< True if irq handler is enabled */
 719         __volatile__ long context_flag; /**< Context swapping flag */
 720         __volatile__ long interrupt_flag; /**< Interruption handler flag */
 721         __volatile__ long dma_flag;     /**< DMA dispatch flag */
 722         struct timer_list timer;        /**< Timer for delaying ctx switch */
 723         wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
 724         int last_checked;               /**< Last context checked for DMA */
 725         int last_context;               /**< Last current context */
 726         unsigned long last_switch;      /**< jiffies at last context switch */
 727         /*@} */
 728
 729         struct work_struct work;
 730         /** \name VBLANK IRQ support */
 731         /*@{ */
 732
 733         wait_queue_head_t vbl_queue;    /**< VBLANK wait queue */
 734         atomic_t vbl_received;
 735         atomic_t vbl_received2;         /**< number of secondary VBLANK interrupts */
 736         spinlock_t vbl_lock;
 737         struct list_head vbl_sigs;              /**< signal list to send on VBLANK */
 738         struct list_head vbl_sigs2;     /**< signals to send on secondary VBLANK */
 739         unsigned int vbl_pending;
 740         spinlock_t tasklet_lock;        /**< For drm_locked_tasklet */
 741         void (*locked_tasklet_func)(struct drm_device *dev);
 742
 743         /*@} */
 744         cycles_t ctx_start;
 745         cycles_t lck_start;
 746
 747         struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
 748         wait_queue_head_t buf_readers;  /**< Processes waiting to read */
 749         wait_queue_head_t buf_writers;  /**< Processes waiting to ctx switch */
 750
 751         struct drm_agp_head *agp;       /**< AGP data */
 752
 753         struct pci_dev *pdev;           /**< PCI device structure */
 754         int pci_vendor;                 /**< PCI vendor id */
 755         int pci_device;                 /**< PCI device id */
 756 #ifdef __alpha__
 757         struct pci_controller *hose;
 758 #endif
 759         struct drm_sg_mem *sg;  /**< Scatter gather memory */
 760         void *dev_private;              /**< device private data */
 761         struct drm_sigdata sigdata;        /**< For block_all_signals */
 762         sigset_t sigmask;
 763
 764         struct drm_driver *driver;
 765         drm_local_map_t *agp_buffer_map;
 766         unsigned int agp_buffer_token;
 767         struct drm_minor *primary;              /**< render type primary screen head */
 768
 769         /** \name Drawable information */
 770         /*@{ */
 771         spinlock_t drw_lock;
 772         struct idr drw_idr;
 773         /*@} */
 774 };
 775
 776 static __inline__ int drm_core_check_feature(struct drm_device *dev,
 777                                              int feature)
 778 {
 779         return ((dev->driver->driver_features & feature) ? 1 : 0);
 780 }
 781
 782 #ifdef __alpha__
 783 #define drm_get_pci_domain(dev) dev->hose->index
 784 #else
 785 #define drm_get_pci_domain(dev) 0
 786 #endif
 787
 788 #if __OS_HAS_AGP
 789 static inline int drm_core_has_AGP(struct drm_device *dev)
 790 {
 791         return drm_core_check_feature(dev, DRIVER_USE_AGP);
 792 }
 793 #else
 794 #define drm_core_has_AGP(dev) (0)
 795 #endif
 796
 797 #if __OS_HAS_MTRR
 798 static inline int drm_core_has_MTRR(struct drm_device *dev)
 799 {
 800         return drm_core_check_feature(dev, DRIVER_USE_MTRR);
 801 }
 802
 803 #define DRM_MTRR_WC             MTRR_TYPE_WRCOMB
 804
 805 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
 806                                unsigned int flags)
 807 {
 808         return mtrr_add(offset, size, flags, 1);
 809 }
 810
 811 static inline int drm_mtrr_del(int handle, unsigned long offset,
 812                                unsigned long size, unsigned int flags)
 813 {
 814         return mtrr_del(handle, offset, size);
 815 }
 816
 817 #else
 818 #define drm_core_has_MTRR(dev) (0)
 819
 820 #define DRM_MTRR_WC             0
 821
 822 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
 823                                unsigned int flags)
 824 {
 825         return 0;
 826 }
 827
 828 static inline int drm_mtrr_del(int handle, unsigned long offset,
 829                                unsigned long size, unsigned int flags)
 830 {
 831         return 0;
 832 }
 833 #endif
 834
 835 /******************************************************************/
 836 /** \name Internal function definitions */
 837 /*@{*/
 838
 839                                 /* Driver support (drm_drv.h) */
 840 extern int drm_init(struct drm_driver *driver);
 841 extern void drm_exit(struct drm_driver *driver);
 842 extern int drm_ioctl(struct inode *inode, struct file *filp,
 843                      unsigned int cmd, unsigned long arg);
 844 extern long drm_compat_ioctl(struct file *filp,
 845                              unsigned int cmd, unsigned long arg);
 846 extern int drm_lastclose(struct drm_device *dev);
 847
 848                                 /* Device support (drm_fops.h) */
 849 extern int drm_open(struct inode *inode, struct file *filp);
 850 extern int drm_stub_open(struct inode *inode, struct file *filp);
 851 extern int drm_fasync(int fd, struct file *filp, int on);
 852 extern int drm_release(struct inode *inode, struct file *filp);
 853
 854                                 /* Mapping support (drm_vm.h) */
 855 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
 856 extern unsigned long drm_core_get_map_ofs(struct drm_map * map);
 857 extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
 858 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
 859
 860                                 /* Memory management support (drm_memory.h) */
 861 #include "drm_memory.h"
 862 extern void drm_mem_init(void);
 863 extern int drm_mem_info(char *buf, char **start, off_t offset,
 864                         int request, int *eof, void *data);
 865 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
 866
 867 extern DRM_AGP_MEM *drm_alloc_agp(struct drm_device *dev, int pages, u32 type);
 868 extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
 869 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
 870 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
 871
 872                                 /* Misc. IOCTL support (drm_ioctl.h) */
 873 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
 874                             struct drm_file *file_priv);
 875 extern int drm_getunique(struct drm_device *dev, void *data,
 876                          struct drm_file *file_priv);
 877 extern int drm_setunique(struct drm_device *dev, void *data,
 878                          struct drm_file *file_priv);
 879 extern int drm_getmap(struct drm_device *dev, void *data,
 880                       struct drm_file *file_priv);
 881 extern int drm_getclient(struct drm_device *dev, void *data,
 882                          struct drm_file *file_priv);
 883 extern int drm_getstats(struct drm_device *dev, void *data,
 884                         struct drm_file *file_priv);
 885 extern int drm_setversion(struct drm_device *dev, void *data,
 886                           struct drm_file *file_priv);
 887 extern int drm_noop(struct drm_device *dev, void *data,
 888                     struct drm_file *file_priv);
 889
 890                                 /* Context IOCTL support (drm_context.h) */
 891 extern int drm_resctx(struct drm_device *dev, void *data,
 892                       struct drm_file *file_priv);
 893 extern int drm_addctx(struct drm_device *dev, void *data,
 894                       struct drm_file *file_priv);
 895 extern int drm_modctx(struct drm_device *dev, void *data,
 896                       struct drm_file *file_priv);
 897 extern int drm_getctx(struct drm_device *dev, void *data,
 898                       struct drm_file *file_priv);
 899 extern int drm_switchctx(struct drm_device *dev, void *data,
 900                          struct drm_file *file_priv);
 901 extern int drm_newctx(struct drm_device *dev, void *data,
 902                       struct drm_file *file_priv);
 903 extern int drm_rmctx(struct drm_device *dev, void *data,
 904                      struct drm_file *file_priv);
 905
 906 extern int drm_ctxbitmap_init(struct drm_device *dev);
 907 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
 908 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
 909
 910 extern int drm_setsareactx(struct drm_device *dev, void *data,
 911                            struct drm_file *file_priv);
 912 extern int drm_getsareactx(struct drm_device *dev, void *data,
 913                            struct drm_file *file_priv);
 914
 915                                 /* Drawable IOCTL support (drm_drawable.h) */
 916 extern int drm_adddraw(struct drm_device *dev, void *data,
 917                        struct drm_file *file_priv);
 918 extern int drm_rmdraw(struct drm_device *dev, void *data,
 919                       struct drm_file *file_priv);
 920 extern int drm_update_drawable_info(struct drm_device *dev, void *data,
 921                                     struct drm_file *file_priv);
 922 extern struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev,
 923                                                   drm_drawable_t id);
 924 extern void drm_drawable_free_all(struct drm_device *dev);
 925
 926                                 /* Authentication IOCTL support (drm_auth.h) */
 927 extern int drm_getmagic(struct drm_device *dev, void *data,
 928                         struct drm_file *file_priv);
 929 extern int drm_authmagic(struct drm_device *dev, void *data,
 930                          struct drm_file *file_priv);
 931
 932                                 /* Locking IOCTL support (drm_lock.h) */
 933 extern int drm_lock(struct drm_device *dev, void *data,
 934                     struct drm_file *file_priv);
 935 extern int drm_unlock(struct drm_device *dev, void *data,
 936                       struct drm_file *file_priv);
 937 extern int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
 938 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
 939 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
 940 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
 941
 942 /*
 943  * These are exported to drivers so that they can implement fencing using
 944  * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
 945  */
 946
 947 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
 948
 949                                 /* Buffer management support (drm_bufs.h) */
 950 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
 951 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
 952 extern int drm_addmap(struct drm_device *dev, unsigned int offset,
 953                       unsigned int size, enum drm_map_type type,
 954                       enum drm_map_flags flags, drm_local_map_t ** map_ptr);
 955 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
 956                             struct drm_file *file_priv);
 957 extern int drm_rmmap(struct drm_device *dev, drm_local_map_t *map);
 958 extern int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t *map);
 959 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
 960                            struct drm_file *file_priv);
 961 extern int drm_addbufs(struct drm_device *dev, void *data,
 962                        struct drm_file *file_priv);
 963 extern int drm_infobufs(struct drm_device *dev, void *data,
 964                         struct drm_file *file_priv);
 965 extern int drm_markbufs(struct drm_device *dev, void *data,
 966                         struct drm_file *file_priv);
 967 extern int drm_freebufs(struct drm_device *dev, void *data,
 968                         struct drm_file *file_priv);
 969 extern int drm_mapbufs(struct drm_device *dev, void *data,
 970                        struct drm_file *file_priv);
 971 extern int drm_order(unsigned long size);
 972 extern unsigned long drm_get_resource_start(struct drm_device *dev,
 973                                             unsigned int resource);
 974 extern unsigned long drm_get_resource_len(struct drm_device *dev,
 975                                           unsigned int resource);
 976
 977                                 /* DMA support (drm_dma.h) */
 978 extern int drm_dma_setup(struct drm_device *dev);
 979 extern void drm_dma_takedown(struct drm_device *dev);
 980 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
 981 extern void drm_core_reclaim_buffers(struct drm_device *dev,
 982                                      struct drm_file *filp);
 983
 984                                 /* IRQ support (drm_irq.h) */
 985 extern int drm_control(struct drm_device *dev, void *data,
 986                        struct drm_file *file_priv);
 987 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
 988 extern int drm_irq_uninstall(struct drm_device *dev);
 989 extern void drm_driver_irq_preinstall(struct drm_device *dev);
 990 extern void drm_driver_irq_postinstall(struct drm_device *dev);
 991 extern void drm_driver_irq_uninstall(struct drm_device *dev);
 992
 993 extern int drm_wait_vblank(struct drm_device *dev, void *data,
 994                            struct drm_file *file_priv);
 995 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
 996 extern void drm_vbl_send_signals(struct drm_device *dev);
 997 extern void drm_locked_tasklet(struct drm_device *dev, void(*func)(struct drm_device*));
 998
 999                                 /* AGP/GART support (drm_agpsupport.h) */
1000 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1001 extern int drm_agp_acquire(struct drm_device *dev);
1002 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1003                                  struct drm_file *file_priv);
1004 extern int drm_agp_release(struct drm_device *dev);
1005 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1006                                  struct drm_file *file_priv);
1007 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1008 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1009                                 struct drm_file *file_priv);
1010 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1011 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1012                         struct drm_file *file_priv);
1013 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1014 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1015                          struct drm_file *file_priv);
1016 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1017 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1018                         struct drm_file *file_priv);
1019 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1020 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1021                           struct drm_file *file_priv);
1022 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1023 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1024                         struct drm_file *file_priv);
1025 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge, size_t pages, u32 type);
1026 extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
1027 extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
1028 extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
1029
1030                                 /* Stub support (drm_stub.h) */
1031 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
1032                        struct drm_driver *driver);
1033 extern int drm_put_dev(struct drm_device *dev);
1034 extern int drm_put_minor(struct drm_minor **minor);
1035 extern unsigned int drm_debug;
1036
1037 extern struct class *drm_class;
1038 extern struct proc_dir_entry *drm_proc_root;
1039
1040 extern struct idr drm_minors_idr;
1041
1042 extern drm_local_map_t *drm_getsarea(struct drm_device *dev);
1043
1044                                 /* Proc support (drm_proc.h) */
1045 extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1046                          struct proc_dir_entry *root);
1047 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1048
1049                                 /* Scatter Gather Support (drm_scatter.h) */
1050 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1051 extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1052                         struct drm_file *file_priv);
1053 extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1054 extern int drm_sg_free(struct drm_device *dev, void *data,
1055                        struct drm_file *file_priv);
1056
1057                                /* ATI PCIGART support (ati_pcigart.h) */
1058 extern int drm_ati_pcigart_init(struct drm_device *dev,
1059                                 struct drm_ati_pcigart_info * gart_info);
1060 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1061                                    struct drm_ati_pcigart_info * gart_info);
1062
1063 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1064                                        size_t align, dma_addr_t maxaddr);
1065 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1066 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1067
1068                                /* sysfs support (drm_sysfs.c) */
1069 struct drm_sysfs_class;
1070 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1071 extern void drm_sysfs_destroy(void);
1072 extern int drm_sysfs_device_add(struct drm_minor *minor);
1073 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1074
1075 /*
1076  * Basic memory manager support (drm_mm.c)
1077  */
1078 extern struct drm_mm_node *drm_mm_get_block(struct drm_mm_node * parent,
1079                                        unsigned long size,
1080                                        unsigned alignment);
1081 extern void drm_mm_put_block(struct drm_mm_node * cur);
1082 extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, unsigned long size,
1083                                          unsigned alignment, int best_match);
1084 extern int drm_mm_init(struct drm_mm *mm, unsigned long start, unsigned long size);
1085 extern void drm_mm_takedown(struct drm_mm *mm);
1086 extern int drm_mm_clean(struct drm_mm *mm);
1087 extern unsigned long drm_mm_tail_space(struct drm_mm *mm);
1088 extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, unsigned long size);
1089 extern int drm_mm_add_space_to_tail(struct drm_mm *mm, unsigned long size);
1090
1091 extern void drm_core_ioremap(struct drm_map *map, struct drm_device *dev);
1092 extern void drm_core_ioremap_wc(struct drm_map *map, struct drm_device *dev);
1093 extern void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev);
1094
1095 static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev,
1096                                                    unsigned int token)
1097 {
1098         struct drm_map_list *_entry;
1099         list_for_each_entry(_entry, &dev->maplist, head)
1100             if (_entry->user_token == token)
1101                 return _entry->map;
1102         return NULL;
1103 }
1104
1105 static __inline__ int drm_device_is_agp(struct drm_device *dev)
1106 {
1107         if (dev->driver->device_is_agp != NULL) {
1108                 int err = (*dev->driver->device_is_agp) (dev);
1109
1110                 if (err != 2) {
1111                         return err;
1112                 }
1113         }
1114
1115         return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1116 }
1117
1118 static __inline__ int drm_device_is_pcie(struct drm_device *dev)
1119 {
1120         return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1121 }
1122
1123 static __inline__ void drm_core_dropmap(struct drm_map *map)
1124 {
1125 }
1126
1127 #ifndef DEBUG_MEMORY
1128 /** Wrapper around kmalloc() */
1129 static __inline__ void *drm_alloc(size_t size, int area)
1130 {
1131         return kmalloc(size, GFP_KERNEL);
1132 }
1133
1134 /** Wrapper around kfree() */
1135 static __inline__ void drm_free(void *pt, size_t size, int area)
1136 {
1137         kfree(pt);
1138 }
1139
1140 /** Wrapper around kcalloc() */
1141 static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
1142 {
1143         return kcalloc(nmemb, size, GFP_KERNEL);
1144 }
1145 #else
1146 extern void *drm_alloc(size_t size, int area);
1147 extern void drm_free(void *pt, size_t size, int area);
1148 extern void *drm_calloc(size_t nmemb, size_t size, int area);
1149 #endif
1150
1151 /*@}*/
1152
1153 #endif                          /* __KERNEL__ */
1154 #endif