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