drivers/char/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/mm.h>
  58 #include <linux/cdev.h>
  59 #include <linux/mutex.h>
  60 #if defined(__alpha__) || defined(__powerpc__)
  61 #include <asm/pgtable.h>        /* For pte_wrprotect */
  62 #endif
  63 #include <asm/io.h>
  64 #include <asm/mman.h>
  65 #include <asm/uaccess.h>
  66 #ifdef CONFIG_MTRR
  67 #include <asm/mtrr.h>
  68 #endif
  69 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
  70 #include <linux/types.h>
  71 #include <linux/agp_backend.h>
  72 #endif
  73 #include <linux/workqueue.h>
  74 #include <linux/poll.h>
  75 #include <asm/pgalloc.h>
  76 #include "drm.h"
  77
  78 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
  79 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
  80
  81 #include "drm_os_linux.h"
  82 #include "drm_hashtab.h"
  83
  84 /***********************************************************************/
  85 /** \name DRM template customization defaults */
  86 /*@{*/
  87
  88 /* driver capabilities and requirements mask */
  89 #define DRIVER_USE_AGP     0x1
  90 #define DRIVER_REQUIRE_AGP 0x2
  91 #define DRIVER_USE_MTRR    0x4
  92 #define DRIVER_PCI_DMA     0x8
  93 #define DRIVER_SG          0x10
  94 #define DRIVER_HAVE_DMA    0x20
  95 #define DRIVER_HAVE_IRQ    0x40
  96 #define DRIVER_IRQ_SHARED  0x80
  97 #define DRIVER_IRQ_VBL     0x100
  98 #define DRIVER_DMA_QUEUE   0x200
  99 #define DRIVER_FB_DMA      0x400
 100 #define DRIVER_IRQ_VBL2    0x800
 101
 102 /***********************************************************************/
 103 /** \name Begin the DRM... */
 104 /*@{*/
 105
 106 #define DRM_DEBUG_CODE 2          /**< Include debugging code if > 1, then
 107                                      also include looping detection. */
 108
 109 #define DRM_MAGIC_HASH_ORDER  4  /**< Size of key hash table. Must be power of 2. */
 110 #define DRM_KERNEL_CONTEXT    0  /**< Change drm_resctx if changed */
 111 #define DRM_RESERVED_CONTEXTS 1  /**< Change drm_resctx if changed */
 112 #define DRM_LOOPING_LIMIT     5000000
 113 #define DRM_TIME_SLICE        (HZ/20)  /**< Time slice for GLXContexts */
 114 #define DRM_LOCK_SLICE        1 /**< Time slice for lock, in jiffies */
 115
 116 #define DRM_FLAG_DEBUG    0x01
 117
 118 #define DRM_MEM_DMA        0
 119 #define DRM_MEM_SAREA      1
 120 #define DRM_MEM_DRIVER     2
 121 #define DRM_MEM_MAGIC      3
 122 #define DRM_MEM_IOCTLS     4
 123 #define DRM_MEM_MAPS       5
 124 #define DRM_MEM_VMAS       6
 125 #define DRM_MEM_BUFS       7
 126 #define DRM_MEM_SEGS       8
 127 #define DRM_MEM_PAGES      9
 128 #define DRM_MEM_FILES     10
 129 #define DRM_MEM_QUEUES    11
 130 #define DRM_MEM_CMDS      12
 131 #define DRM_MEM_MAPPINGS  13
 132 #define DRM_MEM_BUFLISTS  14
 133 #define DRM_MEM_AGPLISTS  15
 134 #define DRM_MEM_TOTALAGP  16
 135 #define DRM_MEM_BOUNDAGP  17
 136 #define DRM_MEM_CTXBITMAP 18
 137 #define DRM_MEM_STUB      19
 138 #define DRM_MEM_SGLISTS   20
 139 #define DRM_MEM_CTXLIST   21
 140 #define DRM_MEM_MM        22
 141 #define DRM_MEM_HASHTAB   23
 142
 143 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
 144 #define DRM_MAP_HASH_OFFSET 0x10000000
 145
 146 /*@}*/
 147
 148 /***********************************************************************/
 149 /** \name Macros to make printk easier */
 150 /*@{*/
 151
 152 /**
 153  * Error output.
 154  *
 155  * \param fmt printf() like format string.
 156  * \param arg arguments
 157  */
 158 #define DRM_ERROR(fmt, arg...) \
 159         printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __FUNCTION__ , ##arg)
 160
 161 /**
 162  * Memory error output.
 163  *
 164  * \param area memory area where the error occurred.
 165  * \param fmt printf() like format string.
 166  * \param arg arguments
 167  */
 168 #define DRM_MEM_ERROR(area, fmt, arg...) \
 169         printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __FUNCTION__, \
 170                drm_mem_stats[area].name , ##arg)
 171
 172 #define DRM_INFO(fmt, arg...)  printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
 173
 174 /**
 175  * Debug output.
 176  *
 177  * \param fmt printf() like format string.
 178  * \param arg arguments
 179  */
 180 #if DRM_DEBUG_CODE
 181 #define DRM_DEBUG(fmt, arg...)                                          \
 182         do {                                                            \
 183                 if ( drm_debug )                        \
 184                         printk(KERN_DEBUG                               \
 185                                "[" DRM_NAME ":%s] " fmt ,       \
 186                                __FUNCTION__ , ##arg);                   \
 187         } while (0)
 188 #else
 189 #define DRM_DEBUG(fmt, arg...)           do { } while (0)
 190 #endif
 191
 192 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
 193
 194 #define DRM_PROC_PRINT(fmt, arg...)                                     \
 195    len += sprintf(&buf[len], fmt , ##arg);                              \
 196    if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
 197
 198 #define DRM_PROC_PRINT_RET(ret, fmt, arg...)                            \
 199    len += sprintf(&buf[len], fmt , ##arg);                              \
 200    if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
 201
 202 /*@}*/
 203
 204 /***********************************************************************/
 205 /** \name Internal types and structures */
 206 /*@{*/
 207
 208 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
 209
 210 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
 211 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
 212 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
 213
 214 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 215 /**
 216  * Get the private SAREA mapping.
 217  *
 218  * \param _dev DRM device.
 219  * \param _ctx context number.
 220  * \param _map output mapping.
 221  */
 222 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do {       \
 223         (_map) = (_dev)->context_sareas[_ctx];          \
 224 } while(0)
 225
 226 /**
 227  * Test that the hardware lock is held by the caller, returning otherwise.
 228  *
 229  * \param dev DRM device.
 230  * \param filp file pointer of the caller.
 231  */
 232 #define LOCK_TEST_WITH_RETURN( dev, filp )                              \
 233 do {                                                                    \
 234         if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||           \
 235              dev->lock.filp != filp ) {                         \
 236                 DRM_ERROR( "%s called without lock held\n",             \
 237                            __FUNCTION__ );                              \
 238                 return -EINVAL;                                         \
 239         }                                                               \
 240 } while (0)
 241
 242 /**
 243  * Copy and IOCTL return string to user space
 244  */
 245 #define DRM_COPY( name, value )                                         \
 246         len = strlen( value );                                          \
 247         if ( len > name##_len ) len = name##_len;                       \
 248         name##_len = strlen( value );                                   \
 249         if ( len && name ) {                                            \
 250                 if ( copy_to_user( name, value, len ) )                 \
 251                         return -EFAULT;                                 \
 252         }
 253
 254 /**
 255  * Ioctl function type.
 256  *
 257  * \param inode device inode.
 258  * \param filp file pointer.
 259  * \param cmd command.
 260  * \param arg argument.
 261  */
 262 typedef int drm_ioctl_t(struct inode *inode, struct file *filp,
 263                         unsigned int cmd, unsigned long arg);
 264
 265 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
 266                                unsigned long arg);
 267
 268 #define DRM_AUTH        0x1
 269 #define DRM_MASTER      0x2
 270 #define DRM_ROOT_ONLY   0x4
 271
 272 typedef struct drm_ioctl_desc {
 273         drm_ioctl_t *func;
 274         int flags;
 275 } drm_ioctl_desc_t;
 276
 277 typedef struct drm_devstate {
 278         pid_t owner;                    /**< X server pid holding x_lock */
 279 } drm_devstate_t;
 280
 281 typedef struct drm_magic_entry {
 282         drm_hash_item_t hash_item;
 283         struct list_head head;
 284         struct drm_file *priv;
 285         struct drm_magic_entry *next;
 286 } drm_magic_entry_t;
 287
 288 typedef struct drm_magic_head {
 289         struct drm_magic_entry *head;
 290         struct drm_magic_entry *tail;
 291 } drm_magic_head_t;
 292
 293 typedef struct drm_vma_entry {
 294         struct vm_area_struct *vma;
 295         struct drm_vma_entry *next;
 296         pid_t pid;
 297 } drm_vma_entry_t;
 298
 299 /**
 300  * DMA buffer.
 301  */
 302 typedef struct drm_buf {
 303         int idx;                       /**< Index into master buflist */
 304         int total;                     /**< Buffer size */
 305         int order;                     /**< log-base-2(total) */
 306         int used;                      /**< Amount of buffer in use (for DMA) */
 307         unsigned long offset;          /**< Byte offset (used internally) */
 308         void *address;                 /**< Address of buffer */
 309         unsigned long bus_address;     /**< Bus address of buffer */
 310         struct drm_buf *next;          /**< Kernel-only: used for free list */
 311         __volatile__ int waiting;      /**< On kernel DMA queue */
 312         __volatile__ int pending;      /**< On hardware DMA queue */
 313         wait_queue_head_t dma_wait;    /**< Processes waiting */
 314         struct file *filp;             /**< Pointer to holding file descr */
 315         int context;                   /**< Kernel queue for this buffer */
 316         int while_locked;              /**< Dispatch this buffer while locked */
 317         enum {
 318                 DRM_LIST_NONE = 0,
 319                 DRM_LIST_FREE = 1,
 320                 DRM_LIST_WAIT = 2,
 321                 DRM_LIST_PEND = 3,
 322                 DRM_LIST_PRIO = 4,
 323                 DRM_LIST_RECLAIM = 5
 324         } list;                        /**< Which list we're on */
 325
 326         int dev_priv_size;               /**< Size of buffer private storage */
 327         void *dev_private;               /**< Per-buffer private storage */
 328 } drm_buf_t;
 329
 330 /** bufs is one longer than it has to be */
 331 typedef struct drm_waitlist {
 332         int count;                      /**< Number of possible buffers */
 333         drm_buf_t **bufs;               /**< List of pointers to buffers */
 334         drm_buf_t **rp;                 /**< Read pointer */
 335         drm_buf_t **wp;                 /**< Write pointer */
 336         drm_buf_t **end;                /**< End pointer */
 337         spinlock_t read_lock;
 338         spinlock_t write_lock;
 339 } drm_waitlist_t;
 340
 341 typedef struct drm_freelist {
 342         int initialized;               /**< Freelist in use */
 343         atomic_t count;                /**< Number of free buffers */
 344         drm_buf_t *next;               /**< End pointer */
 345
 346         wait_queue_head_t waiting;     /**< Processes waiting on free bufs */
 347         int low_mark;                  /**< Low water mark */
 348         int high_mark;                 /**< High water mark */
 349         atomic_t wfh;                  /**< If waiting for high mark */
 350         spinlock_t lock;
 351 } drm_freelist_t;
 352
 353 typedef struct drm_dma_handle {
 354         dma_addr_t busaddr;
 355         void *vaddr;
 356         size_t size;
 357 } drm_dma_handle_t;
 358
 359 /**
 360  * Buffer entry.  There is one of this for each buffer size order.
 361  */
 362 typedef struct drm_buf_entry {
 363         int buf_size;                   /**< size */
 364         int buf_count;                  /**< number of buffers */
 365         drm_buf_t *buflist;             /**< buffer list */
 366         int seg_count;
 367         int page_order;
 368         drm_dma_handle_t **seglist;
 369
 370         drm_freelist_t freelist;
 371 } drm_buf_entry_t;
 372
 373 /** File private data */
 374 typedef struct drm_file {
 375         int authenticated;
 376         int master;
 377         int minor;
 378         pid_t pid;
 379         uid_t uid;
 380         drm_magic_t magic;
 381         unsigned long ioctl_count;
 382         struct drm_file *next;
 383         struct drm_file *prev;
 384         struct drm_head *head;
 385         int remove_auth_on_close;
 386         unsigned long lock_count;
 387         void *driver_priv;
 388 } drm_file_t;
 389
 390 /** Wait queue */
 391 typedef struct drm_queue {
 392         atomic_t use_count;             /**< Outstanding uses (+1) */
 393         atomic_t finalization;          /**< Finalization in progress */
 394         atomic_t block_count;           /**< Count of processes waiting */
 395         atomic_t block_read;            /**< Queue blocked for reads */
 396         wait_queue_head_t read_queue;   /**< Processes waiting on block_read */
 397         atomic_t block_write;           /**< Queue blocked for writes */
 398         wait_queue_head_t write_queue;  /**< Processes waiting on block_write */
 399 #if 1
 400         atomic_t total_queued;          /**< Total queued statistic */
 401         atomic_t total_flushed;         /**< Total flushes statistic */
 402         atomic_t total_locks;           /**< Total locks statistics */
 403 #endif
 404         drm_ctx_flags_t flags;          /**< Context preserving and 2D-only */
 405         drm_waitlist_t waitlist;        /**< Pending buffers */
 406         wait_queue_head_t flush_queue;  /**< Processes waiting until flush */
 407 } drm_queue_t;
 408
 409 /**
 410  * Lock data.
 411  */
 412 typedef struct drm_lock_data {
 413         drm_hw_lock_t *hw_lock;         /**< Hardware lock */
 414         struct file *filp;              /**< File descr of lock holder (0=kernel) */
 415         wait_queue_head_t lock_queue;   /**< Queue of blocked processes */
 416         unsigned long lock_time;        /**< Time of last lock in jiffies */
 417         spinlock_t spinlock;
 418         uint32_t kernel_waiters;
 419         uint32_t user_waiters;
 420         int idle_has_lock;
 421 } drm_lock_data_t;
 422
 423 /**
 424  * DMA data.
 425  */
 426 typedef struct drm_device_dma {
 427
 428         drm_buf_entry_t bufs[DRM_MAX_ORDER + 1];        /**< buffers, grouped by their size order */
 429         int buf_count;                  /**< total number of buffers */
 430         drm_buf_t **buflist;            /**< Vector of pointers into drm_device_dma::bufs */
 431         int seg_count;
 432         int page_count;                 /**< number of pages */
 433         unsigned long *pagelist;        /**< page list */
 434         unsigned long byte_count;
 435         enum {
 436                 _DRM_DMA_USE_AGP = 0x01,
 437                 _DRM_DMA_USE_SG = 0x02,
 438                 _DRM_DMA_USE_FB = 0x04,
 439                 _DRM_DMA_USE_PCI_RO = 0x08
 440         } flags;
 441
 442 } drm_device_dma_t;
 443
 444 /**
 445  * AGP memory entry.  Stored as a doubly linked list.
 446  */
 447 typedef struct drm_agp_mem {
 448         unsigned long handle;           /**< handle */
 449         DRM_AGP_MEM *memory;
 450         unsigned long bound;            /**< address */
 451         int pages;
 452         struct drm_agp_mem *prev;       /**< previous entry */
 453         struct drm_agp_mem *next;       /**< next entry */
 454 } drm_agp_mem_t;
 455
 456 /**
 457  * AGP data.
 458  *
 459  * \sa drm_agp_init() and drm_device::agp.
 460  */
 461 typedef struct drm_agp_head {
 462         DRM_AGP_KERN agp_info;          /**< AGP device information */
 463         drm_agp_mem_t *memory;          /**< memory entries */
 464         unsigned long mode;             /**< AGP mode */
 465         struct agp_bridge_data *bridge;
 466         int enabled;                    /**< whether the AGP bus as been enabled */
 467         int acquired;                   /**< whether the AGP device has been acquired */
 468         unsigned long base;
 469         int agp_mtrr;
 470         int cant_use_aperture;
 471         unsigned long page_mask;
 472 } drm_agp_head_t;
 473
 474 /**
 475  * Scatter-gather memory.
 476  */
 477 typedef struct drm_sg_mem {
 478         unsigned long handle;
 479         void *virtual;
 480         int pages;
 481         struct page **pagelist;
 482         dma_addr_t *busaddr;
 483 } drm_sg_mem_t;
 484
 485 typedef struct drm_sigdata {
 486         int context;
 487         drm_hw_lock_t *lock;
 488 } drm_sigdata_t;
 489
 490 /**
 491  * Mappings list
 492  */
 493 typedef struct drm_map_list {
 494         struct list_head head;          /**< list head */
 495         drm_hash_item_t hash;
 496         drm_map_t *map;                 /**< mapping */
 497         unsigned int user_token;
 498 } drm_map_list_t;
 499
 500 typedef drm_map_t drm_local_map_t;
 501
 502 /**
 503  * Context handle list
 504  */
 505 typedef struct drm_ctx_list {
 506         struct list_head head;          /**< list head */
 507         drm_context_t handle;           /**< context handle */
 508         drm_file_t *tag;                /**< associated fd private data */
 509 } drm_ctx_list_t;
 510
 511 typedef struct drm_vbl_sig {
 512         struct list_head head;
 513         unsigned int sequence;
 514         struct siginfo info;
 515         struct task_struct *task;
 516 } drm_vbl_sig_t;
 517
 518 /* location of GART table */
 519 #define DRM_ATI_GART_MAIN 1
 520 #define DRM_ATI_GART_FB   2
 521
 522 #define DRM_ATI_GART_PCI 1
 523 #define DRM_ATI_GART_PCIE 2
 524 #define DRM_ATI_GART_IGP 3
 525
 526 typedef struct ati_pcigart_info {
 527         int gart_table_location;
 528         int gart_reg_if;
 529         void *addr;
 530         dma_addr_t bus_addr;
 531         drm_local_map_t mapping;
 532         int table_size;
 533 } drm_ati_pcigart_info;
 534
 535 /*
 536  * Generic memory manager structs
 537  */
 538 typedef struct drm_mm_node {
 539         struct list_head fl_entry;
 540         struct list_head ml_entry;
 541         int free;
 542         unsigned long start;
 543         unsigned long size;
 544         struct drm_mm *mm;
 545         void *private;
 546 } drm_mm_node_t;
 547
 548 typedef struct drm_mm {
 549         struct list_head fl_entry;
 550         struct list_head ml_entry;
 551 } drm_mm_t;
 552
 553 /**
 554  * DRM driver structure. This structure represent the common code for
 555  * a family of cards. There will one drm_device for each card present
 556  * in this family
 557  */
 558 struct drm_device;
 559
 560 struct drm_driver {
 561         int (*load) (struct drm_device *, unsigned long flags);
 562         int (*firstopen) (struct drm_device *);
 563         int (*open) (struct drm_device *, drm_file_t *);
 564         void (*preclose) (struct drm_device *, struct file * filp);
 565         void (*postclose) (struct drm_device *, drm_file_t *);
 566         void (*lastclose) (struct drm_device *);
 567         int (*unload) (struct drm_device *);
 568         int (*dma_ioctl) (DRM_IOCTL_ARGS);
 569         void (*dma_ready) (struct drm_device *);
 570         int (*dma_quiescent) (struct drm_device *);
 571         int (*context_ctor) (struct drm_device * dev, int context);
 572         int (*context_dtor) (struct drm_device * dev, int context);
 573         int (*kernel_context_switch) (struct drm_device * dev, int old,
 574                                       int new);
 575         void (*kernel_context_switch_unlock) (struct drm_device * dev);
 576         int (*vblank_wait) (struct drm_device * dev, unsigned int *sequence);
 577         int (*vblank_wait2) (struct drm_device * dev, unsigned int *sequence);
 578         int (*dri_library_name) (struct drm_device *dev, char *buf);
 579
 580         /**
 581          * Called by \c drm_device_is_agp.  Typically used to determine if a
 582          * card is really attached to AGP or not.
 583          *
 584          * \param dev  DRM device handle
 585          *
 586          * \returns
 587          * One of three values is returned depending on whether or not the
 588          * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
 589          * (return of 1), or may or may not be AGP (return of 2).
 590          */
 591         int (*device_is_agp) (struct drm_device * dev);
 592
 593         /* these have to be filled in */
 594
 595         irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
 596         void (*irq_preinstall) (struct drm_device * dev);
 597         void (*irq_postinstall) (struct drm_device * dev);
 598         void (*irq_uninstall) (struct drm_device * dev);
 599         void (*reclaim_buffers) (struct drm_device * dev, struct file * filp);
 600         void (*reclaim_buffers_locked) (struct drm_device *dev,
 601                                         struct file *filp);
 602         void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
 603                                         struct file * filp);
 604         unsigned long (*get_map_ofs) (drm_map_t * map);
 605         unsigned long (*get_reg_ofs) (struct drm_device * dev);
 606         void (*set_version) (struct drm_device * dev, drm_set_version_t * sv);
 607
 608         int major;
 609         int minor;
 610         int patchlevel;
 611         char *name;
 612         char *desc;
 613         char *date;
 614
 615         u32 driver_features;
 616         int dev_priv_size;
 617         drm_ioctl_desc_t *ioctls;
 618         int num_ioctls;
 619         struct file_operations fops;
 620         struct pci_driver pci_driver;
 621 };
 622
 623 /**
 624  * DRM head structure. This structure represent a video head on a card
 625  * that may contain multiple heads. Embed one per head of these in the
 626  * private drm_device structure.
 627  */
 628 typedef struct drm_head {
 629         int minor;                      /**< Minor device number */
 630         struct drm_device *dev;
 631         struct proc_dir_entry *dev_root;  /**< proc directory entry */
 632         dev_t device;                   /**< Device number for mknod */
 633         struct class_device *dev_class;
 634 } drm_head_t;
 635
 636 /**
 637  * DRM device structure. This structure represent a complete card that
 638  * may contain multiple heads.
 639  */
 640 typedef struct drm_device {
 641         char *unique;                   /**< Unique identifier: e.g., busid */
 642         int unique_len;                 /**< Length of unique field */
 643         char *devname;                  /**< For /proc/interrupts */
 644         int if_version;                 /**< Highest interface version set */
 645
 646         int blocked;                    /**< Blocked due to VC switch? */
 647
 648         /** \name Locks */
 649         /*@{ */
 650         spinlock_t count_lock;          /**< For inuse, drm_device::open_count, drm_device::buf_use */
 651         struct mutex struct_mutex;      /**< For others */
 652         /*@} */
 653
 654         /** \name Usage Counters */
 655         /*@{ */
 656         int open_count;                 /**< Outstanding files open */
 657         atomic_t ioctl_count;           /**< Outstanding IOCTLs pending */
 658         atomic_t vma_count;             /**< Outstanding vma areas open */
 659         int buf_use;                    /**< Buffers in use -- cannot alloc */
 660         atomic_t buf_alloc;             /**< Buffer allocation in progress */
 661         /*@} */
 662
 663         /** \name Performance counters */
 664         /*@{ */
 665         unsigned long counters;
 666         drm_stat_type_t types[15];
 667         atomic_t counts[15];
 668         /*@} */
 669
 670         /** \name Authentication */
 671         /*@{ */
 672         drm_file_t *file_first;         /**< file list head */
 673         drm_file_t *file_last;          /**< file list tail */
 674         drm_open_hash_t magiclist;      /**< magic hash table */
 675         struct list_head magicfree;
 676         /*@} */
 677
 678         /** \name Memory management */
 679         /*@{ */
 680         drm_map_list_t *maplist;        /**< Linked list of regions */
 681         int map_count;                  /**< Number of mappable regions */
 682         drm_open_hash_t map_hash;       /**< User token hash table for maps */
 683
 684         /** \name Context handle management */
 685         /*@{ */
 686         drm_ctx_list_t *ctxlist;        /**< Linked list of context handles */
 687         int ctx_count;                  /**< Number of context handles */
 688         struct mutex ctxlist_mutex;     /**< For ctxlist */
 689
 690         drm_map_t **context_sareas;         /**< per-context SAREA's */
 691         int max_context;
 692
 693         drm_vma_entry_t *vmalist;       /**< List of vmas (for debugging) */
 694         drm_lock_data_t lock;           /**< Information on hardware lock */
 695         /*@} */
 696
 697         /** \name DMA queues (contexts) */
 698         /*@{ */
 699         int queue_count;                /**< Number of active DMA queues */
 700         int queue_reserved;               /**< Number of reserved DMA queues */
 701         int queue_slots;                /**< Actual length of queuelist */
 702         drm_queue_t **queuelist;        /**< Vector of pointers to DMA queues */
 703         drm_device_dma_t *dma;          /**< Optional pointer for DMA support */
 704         /*@} */
 705
 706         /** \name Context support */
 707         /*@{ */
 708         int irq;                        /**< Interrupt used by board */
 709         int irq_enabled;                /**< True if irq handler is enabled */
 710         __volatile__ long context_flag; /**< Context swapping flag */
 711         __volatile__ long interrupt_flag; /**< Interruption handler flag */
 712         __volatile__ long dma_flag;     /**< DMA dispatch flag */
 713         struct timer_list timer;        /**< Timer for delaying ctx switch */
 714         wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
 715         int last_checked;               /**< Last context checked for DMA */
 716         int last_context;               /**< Last current context */
 717         unsigned long last_switch;      /**< jiffies at last context switch */
 718         /*@} */
 719
 720         struct work_struct work;
 721         /** \name VBLANK IRQ support */
 722         /*@{ */
 723
 724         wait_queue_head_t vbl_queue;    /**< VBLANK wait queue */
 725         atomic_t vbl_received;
 726         atomic_t vbl_received2;         /**< number of secondary VBLANK interrupts */
 727         spinlock_t vbl_lock;
 728         drm_vbl_sig_t vbl_sigs;         /**< signal list to send on VBLANK */
 729         drm_vbl_sig_t vbl_sigs2;        /**< signals to send on secondary VBLANK */
 730         unsigned int vbl_pending;
 731         spinlock_t tasklet_lock;        /**< For drm_locked_tasklet */
 732         void (*locked_tasklet_func)(struct drm_device *dev);
 733
 734         /*@} */
 735         cycles_t ctx_start;
 736         cycles_t lck_start;
 737
 738         struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
 739         wait_queue_head_t buf_readers;  /**< Processes waiting to read */
 740         wait_queue_head_t buf_writers;  /**< Processes waiting to ctx switch */
 741
 742         drm_agp_head_t *agp;    /**< AGP data */
 743
 744         struct pci_dev *pdev;           /**< PCI device structure */
 745         int pci_vendor;                 /**< PCI vendor id */
 746         int pci_device;                 /**< PCI device id */
 747 #ifdef __alpha__
 748         struct pci_controller *hose;
 749 #endif
 750         drm_sg_mem_t *sg;       /**< Scatter gather memory */
 751         unsigned long *ctx_bitmap;      /**< context bitmap */
 752         void *dev_private;              /**< device private data */
 753         drm_sigdata_t sigdata;     /**< For block_all_signals */
 754         sigset_t sigmask;
 755
 756         struct drm_driver *driver;
 757         drm_local_map_t *agp_buffer_map;
 758         unsigned int agp_buffer_token;
 759         drm_head_t primary;             /**< primary screen head */
 760
 761         /** \name Drawable information */
 762         /*@{ */
 763         spinlock_t drw_lock;
 764         unsigned int drw_bitfield_length;
 765         u32 *drw_bitfield;
 766         unsigned int drw_info_length;
 767         drm_drawable_info_t **drw_info;
 768         /*@} */
 769 } drm_device_t;
 770
 771 static __inline__ int drm_core_check_feature(struct drm_device *dev,
 772                                              int feature)
 773 {
 774         return ((dev->driver->driver_features & feature) ? 1 : 0);
 775 }
 776
 777 #ifdef __alpha__
 778 #define drm_get_pci_domain(dev) dev->hose->index
 779 #else
 780 #define drm_get_pci_domain(dev) 0
 781 #endif
 782
 783 #if __OS_HAS_AGP
 784 static inline int drm_core_has_AGP(struct drm_device *dev)
 785 {
 786         return drm_core_check_feature(dev, DRIVER_USE_AGP);
 787 }
 788 #else
 789 #define drm_core_has_AGP(dev) (0)
 790 #endif
 791
 792 #if __OS_HAS_MTRR
 793 static inline int drm_core_has_MTRR(struct drm_device *dev)
 794 {
 795         return drm_core_check_feature(dev, DRIVER_USE_MTRR);
 796 }
 797
 798 #define DRM_MTRR_WC             MTRR_TYPE_WRCOMB
 799
 800 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
 801                                unsigned int flags)
 802 {
 803         return mtrr_add(offset, size, flags, 1);
 804 }
 805
 806 static inline int drm_mtrr_del(int handle, unsigned long offset,
 807                                unsigned long size, unsigned int flags)
 808 {
 809         return mtrr_del(handle, offset, size);
 810 }
 811
 812 #else
 813 #define drm_core_has_MTRR(dev) (0)
 814
 815 #define DRM_MTRR_WC             0
 816
 817 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
 818                                unsigned int flags)
 819 {
 820         return 0;
 821 }
 822
 823 static inline int drm_mtrr_del(int handle, unsigned long offset,
 824                                unsigned long size, unsigned int flags)
 825 {
 826         return 0;
 827 }
 828 #endif
 829
 830 /******************************************************************/
 831 /** \name Internal function definitions */
 832 /*@{*/
 833
 834                                 /* Driver support (drm_drv.h) */
 835 extern int drm_init(struct drm_driver *driver);
 836 extern void drm_exit(struct drm_driver *driver);
 837 extern int drm_ioctl(struct inode *inode, struct file *filp,
 838                      unsigned int cmd, unsigned long arg);
 839 extern long drm_compat_ioctl(struct file *filp,
 840                              unsigned int cmd, unsigned long arg);
 841 extern int drm_lastclose(drm_device_t *dev);
 842
 843                                 /* Device support (drm_fops.h) */
 844 extern int drm_open(struct inode *inode, struct file *filp);
 845 extern int drm_stub_open(struct inode *inode, struct file *filp);
 846 extern int drm_fasync(int fd, struct file *filp, int on);
 847 extern int drm_release(struct inode *inode, struct file *filp);
 848
 849                                 /* Mapping support (drm_vm.h) */
 850 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
 851 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
 852
 853                                 /* Memory management support (drm_memory.h) */
 854 #include "drm_memory.h"
 855 extern void drm_mem_init(void);
 856 extern int drm_mem_info(char *buf, char **start, off_t offset,
 857                         int request, int *eof, void *data);
 858 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
 859
 860 extern DRM_AGP_MEM *drm_alloc_agp(drm_device_t * dev, int pages, u32 type);
 861 extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
 862 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
 863 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
 864
 865                                 /* Misc. IOCTL support (drm_ioctl.h) */
 866 extern int drm_irq_by_busid(struct inode *inode, struct file *filp,
 867                             unsigned int cmd, unsigned long arg);
 868 extern int drm_getunique(struct inode *inode, struct file *filp,
 869                          unsigned int cmd, unsigned long arg);
 870 extern int drm_setunique(struct inode *inode, struct file *filp,
 871                          unsigned int cmd, unsigned long arg);
 872 extern int drm_getmap(struct inode *inode, struct file *filp,
 873                       unsigned int cmd, unsigned long arg);
 874 extern int drm_getclient(struct inode *inode, struct file *filp,
 875                          unsigned int cmd, unsigned long arg);
 876 extern int drm_getstats(struct inode *inode, struct file *filp,
 877                         unsigned int cmd, unsigned long arg);
 878 extern int drm_setversion(struct inode *inode, struct file *filp,
 879                           unsigned int cmd, unsigned long arg);
 880 extern int drm_noop(struct inode *inode, struct file *filp,
 881                     unsigned int cmd, unsigned long arg);
 882
 883                                 /* Context IOCTL support (drm_context.h) */
 884 extern int drm_resctx(struct inode *inode, struct file *filp,
 885                       unsigned int cmd, unsigned long arg);
 886 extern int drm_addctx(struct inode *inode, struct file *filp,
 887                       unsigned int cmd, unsigned long arg);
 888 extern int drm_modctx(struct inode *inode, struct file *filp,
 889                       unsigned int cmd, unsigned long arg);
 890 extern int drm_getctx(struct inode *inode, struct file *filp,
 891                       unsigned int cmd, unsigned long arg);
 892 extern int drm_switchctx(struct inode *inode, struct file *filp,
 893                          unsigned int cmd, unsigned long arg);
 894 extern int drm_newctx(struct inode *inode, struct file *filp,
 895                       unsigned int cmd, unsigned long arg);
 896 extern int drm_rmctx(struct inode *inode, struct file *filp,
 897                      unsigned int cmd, unsigned long arg);
 898
 899 extern int drm_ctxbitmap_init(drm_device_t * dev);
 900 extern void drm_ctxbitmap_cleanup(drm_device_t * dev);
 901 extern void drm_ctxbitmap_free(drm_device_t * dev, int ctx_handle);
 902
 903 extern int drm_setsareactx(struct inode *inode, struct file *filp,
 904                            unsigned int cmd, unsigned long arg);
 905 extern int drm_getsareactx(struct inode *inode, struct file *filp,
 906                            unsigned int cmd, unsigned long arg);
 907
 908                                 /* Drawable IOCTL support (drm_drawable.h) */
 909 extern int drm_adddraw(struct inode *inode, struct file *filp,
 910                        unsigned int cmd, unsigned long arg);
 911 extern int drm_rmdraw(struct inode *inode, struct file *filp,
 912                       unsigned int cmd, unsigned long arg);
 913 extern int drm_update_drawable_info(struct inode *inode, struct file *filp,
 914                        unsigned int cmd, unsigned long arg);
 915 extern drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev,
 916                                                   drm_drawable_t id);
 917
 918                                 /* Authentication IOCTL support (drm_auth.h) */
 919 extern int drm_getmagic(struct inode *inode, struct file *filp,
 920                         unsigned int cmd, unsigned long arg);
 921 extern int drm_authmagic(struct inode *inode, struct file *filp,
 922                          unsigned int cmd, unsigned long arg);
 923
 924                                 /* Locking IOCTL support (drm_lock.h) */
 925 extern int drm_lock(struct inode *inode, struct file *filp,
 926                     unsigned int cmd, unsigned long arg);
 927 extern int drm_unlock(struct inode *inode, struct file *filp,
 928                       unsigned int cmd, unsigned long arg);
 929 extern int drm_lock_take(drm_lock_data_t *lock_data, unsigned int context);
 930 extern int drm_lock_free(drm_lock_data_t *lock_data, unsigned int context);
 931 extern void drm_idlelock_take(drm_lock_data_t *lock_data);
 932 extern void drm_idlelock_release(drm_lock_data_t *lock_data);
 933
 934 /*
 935  * These are exported to drivers so that they can implement fencing using
 936  * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
 937  */
 938
 939 extern int drm_i_have_hw_lock(struct file *filp);
 940 extern int drm_kernel_take_hw_lock(struct file *filp);
 941
 942                                 /* Buffer management support (drm_bufs.h) */
 943 extern int drm_addbufs_agp(drm_device_t * dev, drm_buf_desc_t * request);
 944 extern int drm_addbufs_pci(drm_device_t * dev, drm_buf_desc_t * request);
 945 extern int drm_addmap(drm_device_t * dev, unsigned int offset,
 946                       unsigned int size, drm_map_type_t type,
 947                       drm_map_flags_t flags, drm_local_map_t ** map_ptr);
 948 extern int drm_addmap_ioctl(struct inode *inode, struct file *filp,
 949                             unsigned int cmd, unsigned long arg);
 950 extern int drm_rmmap(drm_device_t * dev, drm_local_map_t * map);
 951 extern int drm_rmmap_locked(drm_device_t * dev, drm_local_map_t * map);
 952 extern int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
 953                            unsigned int cmd, unsigned long arg);
 954
 955 extern int drm_order(unsigned long size);
 956 extern int drm_addbufs(struct inode *inode, struct file *filp,
 957                        unsigned int cmd, unsigned long arg);
 958 extern int drm_infobufs(struct inode *inode, struct file *filp,
 959                         unsigned int cmd, unsigned long arg);
 960 extern int drm_markbufs(struct inode *inode, struct file *filp,
 961                         unsigned int cmd, unsigned long arg);
 962 extern int drm_freebufs(struct inode *inode, struct file *filp,
 963                         unsigned int cmd, unsigned long arg);
 964 extern int drm_mapbufs(struct inode *inode, struct file *filp,
 965                        unsigned int cmd, unsigned long arg);
 966 extern unsigned long drm_get_resource_start(drm_device_t * dev,
 967                                             unsigned int resource);
 968 extern unsigned long drm_get_resource_len(drm_device_t * dev,
 969                                           unsigned int resource);
 970
 971                                 /* DMA support (drm_dma.h) */
 972 extern int drm_dma_setup(drm_device_t * dev);
 973 extern void drm_dma_takedown(drm_device_t * dev);
 974 extern void drm_free_buffer(drm_device_t * dev, drm_buf_t * buf);
 975 extern void drm_core_reclaim_buffers(drm_device_t * dev, struct file *filp);
 976
 977                                 /* IRQ support (drm_irq.h) */
 978 extern int drm_control(struct inode *inode, struct file *filp,
 979                        unsigned int cmd, unsigned long arg);
 980 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
 981 extern int drm_irq_uninstall(drm_device_t * dev);
 982 extern void drm_driver_irq_preinstall(drm_device_t * dev);
 983 extern void drm_driver_irq_postinstall(drm_device_t * dev);
 984 extern void drm_driver_irq_uninstall(drm_device_t * dev);
 985
 986 extern int drm_wait_vblank(struct inode *inode, struct file *filp,
 987                            unsigned int cmd, unsigned long arg);
 988 extern int drm_vblank_wait(drm_device_t * dev, unsigned int *vbl_seq);
 989 extern void drm_vbl_send_signals(drm_device_t * dev);
 990 extern void drm_locked_tasklet(drm_device_t *dev, void(*func)(drm_device_t*));
 991
 992                                 /* AGP/GART support (drm_agpsupport.h) */
 993 extern drm_agp_head_t *drm_agp_init(drm_device_t * dev);
 994 extern int drm_agp_acquire(drm_device_t * dev);
 995 extern int drm_agp_acquire_ioctl(struct inode *inode, struct file *filp,
 996                                  unsigned int cmd, unsigned long arg);
 997 extern int drm_agp_release(drm_device_t * dev);
 998 extern int drm_agp_release_ioctl(struct inode *inode, struct file *filp,
 999                                  unsigned int cmd, unsigned long arg);
1000 extern int drm_agp_enable(drm_device_t * dev, drm_agp_mode_t mode);
1001 extern int drm_agp_enable_ioctl(struct inode *inode, struct file *filp,
1002                                 unsigned int cmd, unsigned long arg);
1003 extern int drm_agp_info(drm_device_t * dev, drm_agp_info_t * info);
1004 extern int drm_agp_info_ioctl(struct inode *inode, struct file *filp,
1005                               unsigned int cmd, unsigned long arg);
1006 extern int drm_agp_alloc(drm_device_t *dev, drm_agp_buffer_t *request);
1007 extern int drm_agp_alloc_ioctl(struct inode *inode, struct file *filp,
1008                          unsigned int cmd, unsigned long arg);
1009 extern int drm_agp_free(drm_device_t *dev, drm_agp_buffer_t *request);
1010 extern int drm_agp_free_ioctl(struct inode *inode, struct file *filp,
1011                         unsigned int cmd, unsigned long arg);
1012 extern int drm_agp_unbind(drm_device_t *dev, drm_agp_binding_t *request);
1013 extern int drm_agp_unbind_ioctl(struct inode *inode, struct file *filp,
1014                           unsigned int cmd, unsigned long arg);
1015 extern int drm_agp_bind(drm_device_t *dev, drm_agp_binding_t *request);
1016 extern int drm_agp_bind_ioctl(struct inode *inode, struct file *filp,
1017                         unsigned int cmd, unsigned long arg);
1018 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge,
1019                                             size_t pages, u32 type);
1020 extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
1021 extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
1022 extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
1023
1024                                 /* Stub support (drm_stub.h) */
1025 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
1026                        struct drm_driver *driver);
1027 extern int drm_put_dev(drm_device_t * dev);
1028 extern int drm_put_head(drm_head_t * head);
1029 extern unsigned int drm_debug;
1030 extern unsigned int drm_cards_limit;
1031 extern drm_head_t **drm_heads;
1032 extern struct class *drm_class;
1033 extern struct proc_dir_entry *drm_proc_root;
1034
1035                                 /* Proc support (drm_proc.h) */
1036 extern int drm_proc_init(drm_device_t * dev,
1037                          int minor,
1038                          struct proc_dir_entry *root,
1039                          struct proc_dir_entry **dev_root);
1040 extern int drm_proc_cleanup(int minor,
1041                             struct proc_dir_entry *root,
1042                             struct proc_dir_entry *dev_root);
1043
1044                                 /* Scatter Gather Support (drm_scatter.h) */
1045 extern void drm_sg_cleanup(drm_sg_mem_t * entry);
1046 extern int drm_sg_alloc(struct inode *inode, struct file *filp,
1047                         unsigned int cmd, unsigned long arg);
1048 extern int drm_sg_free(struct inode *inode, struct file *filp,
1049                        unsigned int cmd, unsigned long arg);
1050
1051                                /* ATI PCIGART support (ati_pcigart.h) */
1052 extern int drm_ati_pcigart_init(drm_device_t * dev,
1053                                 drm_ati_pcigart_info * gart_info);
1054 extern int drm_ati_pcigart_cleanup(drm_device_t * dev,
1055                                    drm_ati_pcigart_info * gart_info);
1056
1057 extern drm_dma_handle_t *drm_pci_alloc(drm_device_t * dev, size_t size,
1058                                        size_t align, dma_addr_t maxaddr);
1059 extern void __drm_pci_free(drm_device_t * dev, drm_dma_handle_t * dmah);
1060 extern void drm_pci_free(drm_device_t * dev, drm_dma_handle_t * dmah);
1061
1062                                /* sysfs support (drm_sysfs.c) */
1063 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1064 extern void drm_sysfs_destroy(struct class *cs);
1065 extern struct class_device *drm_sysfs_device_add(struct class *cs,
1066                                                  drm_head_t *head);
1067 extern void drm_sysfs_device_remove(struct class_device *class_dev);
1068
1069 /*
1070  * Basic memory manager support (drm_mm.c)
1071  */
1072 extern drm_mm_node_t *drm_mm_get_block(drm_mm_node_t * parent,
1073                                        unsigned long size,
1074                                        unsigned alignment);
1075 void drm_mm_put_block(drm_mm_node_t * cur);
1076 extern drm_mm_node_t *drm_mm_search_free(const drm_mm_t *mm, unsigned long size,
1077                                          unsigned alignment, int best_match);
1078 extern int drm_mm_init(drm_mm_t *mm, unsigned long start, unsigned long size);
1079 extern void drm_mm_takedown(drm_mm_t *mm);
1080 extern int drm_mm_clean(drm_mm_t *mm);
1081 extern unsigned long drm_mm_tail_space(drm_mm_t *mm);
1082 extern int drm_mm_remove_space_from_tail(drm_mm_t *mm, unsigned long size);
1083 extern int drm_mm_add_space_to_tail(drm_mm_t *mm, unsigned long size);
1084
1085 extern void drm_core_ioremap(struct drm_map *map, struct drm_device *dev);
1086 extern void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev);
1087
1088 static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev,
1089                                                    unsigned int token)
1090 {
1091         drm_map_list_t *_entry;
1092         list_for_each_entry(_entry, &dev->maplist->head, head)
1093             if (_entry->user_token == token)
1094                 return _entry->map;
1095         return NULL;
1096 }
1097
1098 static __inline__ int drm_device_is_agp(drm_device_t * dev)
1099 {
1100         if (dev->driver->device_is_agp != NULL) {
1101                 int err = (*dev->driver->device_is_agp) (dev);
1102
1103                 if (err != 2) {
1104                         return err;
1105                 }
1106         }
1107
1108         return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1109 }
1110
1111 static __inline__ int drm_device_is_pcie(drm_device_t * dev)
1112 {
1113         return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1114 }
1115
1116 static __inline__ void drm_core_dropmap(struct drm_map *map)
1117 {
1118 }
1119
1120 #ifndef DEBUG_MEMORY
1121 /** Wrapper around kmalloc() */
1122 static __inline__ void *drm_alloc(size_t size, int area)
1123 {
1124         return kmalloc(size, GFP_KERNEL);
1125 }
1126
1127 /** Wrapper around kfree() */
1128 static __inline__ void drm_free(void *pt, size_t size, int area)
1129 {
1130         kfree(pt);
1131 }
1132
1133 /** Wrapper around kcalloc() */
1134 static __inline__ void *drm_calloc(size_t nmemb, size_t size, int area)
1135 {
1136         return kcalloc(nmemb, size, GFP_KERNEL);
1137 }
1138 #else
1139 extern void *drm_alloc(size_t size, int area);
1140 extern void drm_free(void *pt, size_t size, int area);
1141 extern void *drm_calloc(size_t nmemb, size_t size, int area);
1142 #endif
1143
1144 /*@}*/
1145
1146 extern unsigned long drm_core_get_map_ofs(drm_map_t * map);
1147 extern unsigned long drm_core_get_reg_ofs(struct drm_device *dev);
1148
1149 #endif                          /* __KERNEL__ */
1150 #endif