include/drm/drmP.h

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