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  * Copyright (c) 2009-2010, Code Aurora Forum.
  13  * All rights reserved.
  14  *
  15  * Permission is hereby granted, free of charge, to any person obtaining a
  16  * copy of this software and associated documentation files (the "Software"),
  17  * to deal in the Software without restriction, including without limitation
  18  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  19  * and/or sell copies of the Software, and to permit persons to whom the
  20  * Software is furnished to do so, subject to the following conditions:
  21  *
  22  * The above copyright notice and this permission notice (including the next
  23  * paragraph) shall be included in all copies or substantial portions of the
  24  * Software.
  25  *
  26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  27  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  28  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  29  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  30  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  31  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  32  * OTHER DEALINGS IN THE SOFTWARE.
  33  */
  34
  35 #ifndef _DRM_P_H_
  36 #define _DRM_P_H_
  37
  38 #ifdef __KERNEL__
  39 #ifdef __alpha__
  40 /* add include of current.h so that "current" is defined
  41  * before static inline funcs in wait.h. Doing this so we
  42  * can build the DRM (part of PI DRI). 4/21/2000 S + B */
  43 #include <asm/current.h>
  44 #endif                          /* __alpha__ */
  45 #include <linux/module.h>
  46 #include <linux/kernel.h>
  47 #include <linux/miscdevice.h>
  48 #include <linux/fs.h>
  49 #include <linux/proc_fs.h>
  50 #include <linux/init.h>
  51 #include <linux/file.h>
  52 #include <linux/platform_device.h>
  53 #include <linux/pci.h>
  54 #include <linux/jiffies.h>
  55 #include <linux/dma-mapping.h>
  56 #include <linux/mm.h>
  57 #include <linux/cdev.h>
  58 #include <linux/mutex.h>
  59 #include <linux/slab.h>
  60 #if defined(__alpha__) || defined(__powerpc__)
  61 #include <asm/pgtable.h>        /* For pte_wrprotect */
  62 #endif
  63 #include <asm/io.h>
  64 #include <asm/mman.h>
  65 #include <asm/uaccess.h>
  66 #ifdef CONFIG_MTRR
  67 #include <asm/mtrr.h>
  68 #endif
  69 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
  70 #include <linux/types.h>
  71 #include <linux/agp_backend.h>
  72 #endif
  73 #include <linux/workqueue.h>
  74 #include <linux/poll.h>
  75 #include <asm/pgalloc.h>
  76 #include "drm.h"
  77
  78 #include <linux/idr.h>
  79
  80 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
  81 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
  82
  83 struct drm_file;
  84 struct drm_device;
  85
  86 #include "drm_os_linux.h"
  87 #include "drm_hashtab.h"
  88 #include "drm_mm.h"
  89
  90 #define DRM_UT_CORE             0x01
  91 #define DRM_UT_DRIVER           0x02
  92 #define DRM_UT_KMS              0x04
  93 /*
  94  * Three debug levels are defined.
  95  * drm_core, drm_driver, drm_kms
  96  * drm_core level can be used in the generic drm code. For example:
  97  *      drm_ioctl, drm_mm, drm_memory
  98  * The macro definiton of DRM_DEBUG is used.
  99  *      DRM_DEBUG(fmt, args...)
 100  *      The debug info by using the DRM_DEBUG can be obtained by adding
 101  *      the boot option of "drm.debug=1".
 102  *
 103  * drm_driver level can be used in the specific drm driver. It is used
 104  * to add the debug info related with the drm driver. For example:
 105  * i915_drv, i915_dma, i915_gem, radeon_drv,
 106  *      The macro definition of DRM_DEBUG_DRIVER can be used.
 107  *      DRM_DEBUG_DRIVER(fmt, args...)
 108  *      The debug info by using the DRM_DEBUG_DRIVER can be obtained by
 109  *      adding the boot option of "drm.debug=0x02"
 110  *
 111  * drm_kms level can be used in the KMS code related with specific drm driver.
 112  * It is used to add the debug info related with KMS mode. For example:
 113  * the connector/crtc ,
 114  *      The macro definition of DRM_DEBUG_KMS can be used.
 115  *      DRM_DEBUG_KMS(fmt, args...)
 116  *      The debug info by using the DRM_DEBUG_KMS can be obtained by
 117  *      adding the boot option of "drm.debug=0x04"
 118  *
 119  * If we add the boot option of "drm.debug=0x06", we can get the debug info by
 120  * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
 121  * If we add the boot option of "drm.debug=0x05", we can get the debug info by
 122  * using the DRM_DEBUG_KMS and DRM_DEBUG.
 123  */
 124
 125 extern void drm_ut_debug_printk(unsigned int request_level,
 126                                 const char *prefix,
 127                                 const char *function_name,
 128                                 const char *format, ...);
 129 /***********************************************************************/
 130 /** \name DRM template customization defaults */
 131 /*@{*/
 132
 133 /* driver capabilities and requirements mask */
 134 #define DRIVER_USE_AGP     0x1
 135 #define DRIVER_REQUIRE_AGP 0x2
 136 #define DRIVER_USE_MTRR    0x4
 137 #define DRIVER_PCI_DMA     0x8
 138 #define DRIVER_SG          0x10
 139 #define DRIVER_HAVE_DMA    0x20
 140 #define DRIVER_HAVE_IRQ    0x40
 141 #define DRIVER_IRQ_SHARED  0x80
 142 #define DRIVER_IRQ_VBL     0x100
 143 #define DRIVER_DMA_QUEUE   0x200
 144 #define DRIVER_FB_DMA      0x400
 145 #define DRIVER_IRQ_VBL2    0x800
 146 #define DRIVER_GEM         0x1000
 147 #define DRIVER_MODESET     0x2000
 148 #define DRIVER_USE_PLATFORM_DEVICE  0x4000
 149
 150 /***********************************************************************/
 151 /** \name Begin the DRM... */
 152 /*@{*/
 153
 154 #define DRM_DEBUG_CODE 2          /**< Include debugging code if > 1, then
 155                                      also include looping detection. */
 156
 157 #define DRM_MAGIC_HASH_ORDER  4  /**< Size of key hash table. Must be power of 2. */
 158 #define DRM_KERNEL_CONTEXT    0  /**< Change drm_resctx if changed */
 159 #define DRM_RESERVED_CONTEXTS 1  /**< Change drm_resctx if changed */
 160 #define DRM_LOOPING_LIMIT     5000000
 161 #define DRM_TIME_SLICE        (HZ/20)  /**< Time slice for GLXContexts */
 162 #define DRM_LOCK_SLICE        1 /**< Time slice for lock, in jiffies */
 163
 164 #define DRM_FLAG_DEBUG    0x01
 165
 166 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
 167 #define DRM_MAP_HASH_OFFSET 0x10000000
 168
 169 /*@}*/
 170
 171 /***********************************************************************/
 172 /** \name Macros to make printk easier */
 173 /*@{*/
 174
 175 /**
 176  * Error output.
 177  *
 178  * \param fmt printf() like format string.
 179  * \param arg arguments
 180  */
 181 #define DRM_ERROR(fmt, arg...) \
 182         printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)
 183
 184 /**
 185  * Memory error output.
 186  *
 187  * \param area memory area where the error occurred.
 188  * \param fmt printf() like format string.
 189  * \param arg arguments
 190  */
 191 #define DRM_MEM_ERROR(area, fmt, arg...) \
 192         printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \
 193                drm_mem_stats[area].name , ##arg)
 194
 195 #define DRM_INFO(fmt, arg...)  printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
 196
 197 /**
 198  * Debug output.
 199  *
 200  * \param fmt printf() like format string.
 201  * \param arg arguments
 202  */
 203 #if DRM_DEBUG_CODE
 204 #define DRM_DEBUG(fmt, args...)                                         \
 205         do {                                                            \
 206                 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME,              \
 207                                         __func__, fmt, ##args);         \
 208         } while (0)
 209
 210 #define DRM_DEBUG_DRIVER(fmt, args...)                                  \
 211         do {                                                            \
 212                 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME,            \
 213                                         __func__, fmt, ##args);         \
 214         } while (0)
 215 #define DRM_DEBUG_KMS(fmt, args...)                             \
 216         do {                                                            \
 217                 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME,               \
 218                                          __func__, fmt, ##args);        \
 219         } while (0)
 220 #define DRM_LOG(fmt, args...)                                           \
 221         do {                                                            \
 222                 drm_ut_debug_printk(DRM_UT_CORE, NULL,                  \
 223                                         NULL, fmt, ##args);             \
 224         } while (0)
 225 #define DRM_LOG_KMS(fmt, args...)                                       \
 226         do {                                                            \
 227                 drm_ut_debug_printk(DRM_UT_KMS, NULL,                   \
 228                                         NULL, fmt, ##args);             \
 229         } while (0)
 230 #define DRM_LOG_MODE(fmt, args...)                                      \
 231         do {                                                            \
 232                 drm_ut_debug_printk(DRM_UT_MODE, NULL,                  \
 233                                         NULL, fmt, ##args);             \
 234         } while (0)
 235 #define DRM_LOG_DRIVER(fmt, args...)                                    \
 236         do {                                                            \
 237                 drm_ut_debug_printk(DRM_UT_DRIVER, NULL,                \
 238                                         NULL, fmt, ##args);             \
 239         } while (0)
 240 #else
 241 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
 242 #define DRM_DEBUG_KMS(fmt, args...)     do { } while (0)
 243 #define DRM_DEBUG(fmt, arg...)           do { } while (0)
 244 #define DRM_LOG(fmt, arg...)            do { } while (0)
 245 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
 246 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
 247 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
 248
 249 #endif
 250
 251 /*@}*/
 252
 253 /***********************************************************************/
 254 /** \name Internal types and structures */
 255 /*@{*/
 256
 257 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
 258
 259 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
 260 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
 261
 262 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 263
 264 /**
 265  * Test that the hardware lock is held by the caller, returning otherwise.
 266  *
 267  * \param dev DRM device.
 268  * \param filp file pointer of the caller.
 269  */
 270 #define LOCK_TEST_WITH_RETURN( dev, _file_priv )                                \
 271 do {                                                                            \
 272         if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) ||       \
 273             _file_priv->master->lock.file_priv != _file_priv)   {               \
 274                 DRM_ERROR( "%s called without lock held, held  %d owner %p %p\n",\
 275                            __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
 276                            _file_priv->master->lock.file_priv, _file_priv);     \
 277                 return -EINVAL;                                                 \
 278         }                                                                       \
 279 } while (0)
 280
 281 /**
 282  * Ioctl function type.
 283  *
 284  * \param inode device inode.
 285  * \param file_priv DRM file private pointer.
 286  * \param cmd command.
 287  * \param arg argument.
 288  */
 289 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
 290                         struct drm_file *file_priv);
 291
 292 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
 293                                unsigned long arg);
 294
 295 #define DRM_IOCTL_NR(n)                _IOC_NR(n)
 296 #define DRM_MAJOR       226
 297
 298 #define DRM_AUTH        0x1
 299 #define DRM_MASTER      0x2
 300 #define DRM_ROOT_ONLY   0x4
 301 #define DRM_CONTROL_ALLOW 0x8
 302 #define DRM_UNLOCKED    0x10
 303
 304 struct drm_ioctl_desc {
 305         unsigned int cmd;
 306         int flags;
 307         drm_ioctl_t *func;
 308         unsigned int cmd_drv;
 309 };
 310
 311 /**
 312  * Creates a driver or general drm_ioctl_desc array entry for the given
 313  * ioctl, for use by drm_ioctl().
 314  */
 315
 316 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags)                 \
 317         [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
 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 /* Event queued up for userspace to read */
 406 struct drm_pending_event {
 407         struct drm_event *event;
 408         struct list_head link;
 409         struct drm_file *file_priv;
 410         pid_t pid; /* pid of requester, no guarantee it's valid by the time
 411                       we deliver the event, for tracing only */
 412         void (*destroy)(struct drm_pending_event *event);
 413 };
 414
 415 /** File private data */
 416 struct drm_file {
 417         int authenticated;
 418         pid_t pid;
 419         uid_t uid;
 420         drm_magic_t magic;
 421         unsigned long ioctl_count;
 422         struct list_head lhead;
 423         struct drm_minor *minor;
 424         unsigned long lock_count;
 425
 426         /** Mapping of mm object handles to object pointers. */
 427         struct idr object_idr;
 428         /** Lock for synchronization of access to object_idr. */
 429         spinlock_t table_lock;
 430
 431         struct file *filp;
 432         void *driver_priv;
 433
 434         int is_master; /* this file private is a master for a minor */
 435         struct drm_master *master; /* master this node is currently associated with
 436                                       N.B. not always minor->master */
 437         struct list_head fbs;
 438
 439         wait_queue_head_t event_wait;
 440         struct list_head event_list;
 441         int event_space;
 442 };
 443
 444 /** Wait queue */
 445 struct drm_queue {
 446         atomic_t use_count;             /**< Outstanding uses (+1) */
 447         atomic_t finalization;          /**< Finalization in progress */
 448         atomic_t block_count;           /**< Count of processes waiting */
 449         atomic_t block_read;            /**< Queue blocked for reads */
 450         wait_queue_head_t read_queue;   /**< Processes waiting on block_read */
 451         atomic_t block_write;           /**< Queue blocked for writes */
 452         wait_queue_head_t write_queue;  /**< Processes waiting on block_write */
 453         atomic_t total_queued;          /**< Total queued statistic */
 454         atomic_t total_flushed;         /**< Total flushes statistic */
 455         atomic_t total_locks;           /**< Total locks statistics */
 456         enum drm_ctx_flags flags;       /**< Context preserving and 2D-only */
 457         struct drm_waitlist waitlist;   /**< Pending buffers */
 458         wait_queue_head_t flush_queue;  /**< Processes waiting until flush */
 459 };
 460
 461 /**
 462  * Lock data.
 463  */
 464 struct drm_lock_data {
 465         struct drm_hw_lock *hw_lock;    /**< Hardware lock */
 466         /** Private of lock holder's file (NULL=kernel) */
 467         struct drm_file *file_priv;
 468         wait_queue_head_t lock_queue;   /**< Queue of blocked processes */
 469         unsigned long lock_time;        /**< Time of last lock in jiffies */
 470         spinlock_t spinlock;
 471         uint32_t kernel_waiters;
 472         uint32_t user_waiters;
 473         int idle_has_lock;
 474 };
 475
 476 /**
 477  * DMA data.
 478  */
 479 struct drm_device_dma {
 480
 481         struct drm_buf_entry bufs[DRM_MAX_ORDER + 1];   /**< buffers, grouped by their size order */
 482         int buf_count;                  /**< total number of buffers */
 483         struct drm_buf **buflist;               /**< Vector of pointers into drm_device_dma::bufs */
 484         int seg_count;
 485         int page_count;                 /**< number of pages */
 486         unsigned long *pagelist;        /**< page list */
 487         unsigned long byte_count;
 488         enum {
 489                 _DRM_DMA_USE_AGP = 0x01,
 490                 _DRM_DMA_USE_SG = 0x02,
 491                 _DRM_DMA_USE_FB = 0x04,
 492                 _DRM_DMA_USE_PCI_RO = 0x08
 493         } flags;
 494
 495 };
 496
 497 /**
 498  * AGP memory entry.  Stored as a doubly linked list.
 499  */
 500 struct drm_agp_mem {
 501         unsigned long handle;           /**< handle */
 502         DRM_AGP_MEM *memory;
 503         unsigned long bound;            /**< address */
 504         int pages;
 505         struct list_head head;
 506 };
 507
 508 /**
 509  * AGP data.
 510  *
 511  * \sa drm_agp_init() and drm_device::agp.
 512  */
 513 struct drm_agp_head {
 514         DRM_AGP_KERN agp_info;          /**< AGP device information */
 515         struct list_head memory;
 516         unsigned long mode;             /**< AGP mode */
 517         struct agp_bridge_data *bridge;
 518         int enabled;                    /**< whether the AGP bus as been enabled */
 519         int acquired;                   /**< whether the AGP device has been acquired */
 520         unsigned long base;
 521         int agp_mtrr;
 522         int cant_use_aperture;
 523         unsigned long page_mask;
 524 };
 525
 526 /**
 527  * Scatter-gather memory.
 528  */
 529 struct drm_sg_mem {
 530         unsigned long handle;
 531         void *virtual;
 532         int pages;
 533         struct page **pagelist;
 534         dma_addr_t *busaddr;
 535 };
 536
 537 struct drm_sigdata {
 538         int context;
 539         struct drm_hw_lock *lock;
 540 };
 541
 542
 543 /**
 544  * Kernel side of a mapping
 545  */
 546 struct drm_local_map {
 547         resource_size_t offset;  /**< Requested physical address (0 for SAREA)*/
 548         unsigned long size;      /**< Requested physical size (bytes) */
 549         enum drm_map_type type;  /**< Type of memory to map */
 550         enum drm_map_flags flags;        /**< Flags */
 551         void *handle;            /**< User-space: "Handle" to pass to mmap() */
 552                                  /**< Kernel-space: kernel-virtual address */
 553         int mtrr;                /**< MTRR slot used */
 554 };
 555
 556 typedef struct drm_local_map drm_local_map_t;
 557
 558 /**
 559  * Mappings list
 560  */
 561 struct drm_map_list {
 562         struct list_head head;          /**< list head */
 563         struct drm_hash_item hash;
 564         struct drm_local_map *map;      /**< mapping */
 565         uint64_t user_token;
 566         struct drm_master *master;
 567         struct drm_mm_node *file_offset_node;   /**< fake offset */
 568 };
 569
 570 /**
 571  * Context handle list
 572  */
 573 struct drm_ctx_list {
 574         struct list_head head;          /**< list head */
 575         drm_context_t handle;           /**< context handle */
 576         struct drm_file *tag;           /**< associated fd private data */
 577 };
 578
 579 /* location of GART table */
 580 #define DRM_ATI_GART_MAIN 1
 581 #define DRM_ATI_GART_FB   2
 582
 583 #define DRM_ATI_GART_PCI 1
 584 #define DRM_ATI_GART_PCIE 2
 585 #define DRM_ATI_GART_IGP 3
 586
 587 struct drm_ati_pcigart_info {
 588         int gart_table_location;
 589         int gart_reg_if;
 590         void *addr;
 591         dma_addr_t bus_addr;
 592         dma_addr_t table_mask;
 593         struct drm_dma_handle *table_handle;
 594         struct drm_local_map mapping;
 595         int table_size;
 596 };
 597
 598 /**
 599  * GEM specific mm private for tracking GEM objects
 600  */
 601 struct drm_gem_mm {
 602         struct drm_mm offset_manager;   /**< Offset mgmt for buffer objects */
 603         struct drm_open_hash offset_hash; /**< User token hash table for maps */
 604 };
 605
 606 /**
 607  * This structure defines the drm_mm memory object, which will be used by the
 608  * DRM for its buffer objects.
 609  */
 610 struct drm_gem_object {
 611         /** Reference count of this object */
 612         struct kref refcount;
 613
 614         /** Handle count of this object. Each handle also holds a reference */
 615         atomic_t handle_count; /* number of handles on this object */
 616
 617         /** Related drm device */
 618         struct drm_device *dev;
 619
 620         /** File representing the shmem storage */
 621         struct file *filp;
 622
 623         /* Mapping info for this object */
 624         struct drm_map_list map_list;
 625
 626         /**
 627          * Size of the object, in bytes.  Immutable over the object's
 628          * lifetime.
 629          */
 630         size_t size;
 631
 632         /**
 633          * Global name for this object, starts at 1. 0 means unnamed.
 634          * Access is covered by the object_name_lock in the related drm_device
 635          */
 636         int name;
 637
 638         /**
 639          * Memory domains. These monitor which caches contain read/write data
 640          * related to the object. When transitioning from one set of domains
 641          * to another, the driver is called to ensure that caches are suitably
 642          * flushed and invalidated
 643          */
 644         uint32_t read_domains;
 645         uint32_t write_domain;
 646
 647         /**
 648          * While validating an exec operation, the
 649          * new read/write domain values are computed here.
 650          * They will be transferred to the above values
 651          * at the point that any cache flushing occurs
 652          */
 653         uint32_t pending_read_domains;
 654         uint32_t pending_write_domain;
 655
 656         void *driver_private;
 657 };
 658
 659 #include "drm_crtc.h"
 660
 661 /* per-master structure */
 662 struct drm_master {
 663
 664         struct kref refcount; /* refcount for this master */
 665
 666         struct list_head head; /**< each minor contains a list of masters */
 667         struct drm_minor *minor; /**< link back to minor we are a master for */
 668
 669         char *unique;                   /**< Unique identifier: e.g., busid */
 670         int unique_len;                 /**< Length of unique field */
 671         int unique_size;                /**< amount allocated */
 672
 673         int blocked;                    /**< Blocked due to VC switch? */
 674
 675         /** \name Authentication */
 676         /*@{ */
 677         struct drm_open_hash magiclist;
 678         struct list_head magicfree;
 679         /*@} */
 680
 681         struct drm_lock_data lock;      /**< Information on hardware lock */
 682
 683         void *driver_priv; /**< Private structure for driver to use */
 684 };
 685
 686 /**
 687  * DRM driver structure. This structure represent the common code for
 688  * a family of cards. There will one drm_device for each card present
 689  * in this family
 690  */
 691 struct drm_driver {
 692         int (*load) (struct drm_device *, unsigned long flags);
 693         int (*firstopen) (struct drm_device *);
 694         int (*open) (struct drm_device *, struct drm_file *);
 695         void (*preclose) (struct drm_device *, struct drm_file *file_priv);
 696         void (*postclose) (struct drm_device *, struct drm_file *);
 697         void (*lastclose) (struct drm_device *);
 698         int (*unload) (struct drm_device *);
 699         int (*suspend) (struct drm_device *, pm_message_t state);
 700         int (*resume) (struct drm_device *);
 701         int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
 702         int (*dma_quiescent) (struct drm_device *);
 703         int (*context_dtor) (struct drm_device *dev, int context);
 704
 705         /**
 706          * get_vblank_counter - get raw hardware vblank counter
 707          * @dev: DRM device
 708          * @crtc: counter to fetch
 709          *
 710          * Driver callback for fetching a raw hardware vblank counter
 711          * for @crtc.  If a device doesn't have a hardware counter, the
 712          * driver can simply return the value of drm_vblank_count and
 713          * make the enable_vblank() and disable_vblank() hooks into no-ops,
 714          * leaving interrupts enabled at all times.
 715          *
 716          * Wraparound handling and loss of events due to modesetting is dealt
 717          * with in the DRM core code.
 718          *
 719          * RETURNS
 720          * Raw vblank counter value.
 721          */
 722         u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
 723
 724         /**
 725          * enable_vblank - enable vblank interrupt events
 726          * @dev: DRM device
 727          * @crtc: which irq to enable
 728          *
 729          * Enable vblank interrupts for @crtc.  If the device doesn't have
 730          * a hardware vblank counter, this routine should be a no-op, since
 731          * interrupts will have to stay on to keep the count accurate.
 732          *
 733          * RETURNS
 734          * Zero on success, appropriate errno if the given @crtc's vblank
 735          * interrupt cannot be enabled.
 736          */
 737         int (*enable_vblank) (struct drm_device *dev, int crtc);
 738
 739         /**
 740          * disable_vblank - disable vblank interrupt events
 741          * @dev: DRM device
 742          * @crtc: which irq to enable
 743          *
 744          * Disable vblank interrupts for @crtc.  If the device doesn't have
 745          * a hardware vblank counter, this routine should be a no-op, since
 746          * interrupts will have to stay on to keep the count accurate.
 747          */
 748         void (*disable_vblank) (struct drm_device *dev, int crtc);
 749
 750         /**
 751          * Called by \c drm_device_is_agp.  Typically used to determine if a
 752          * card is really attached to AGP or not.
 753          *
 754          * \param dev  DRM device handle
 755          *
 756          * \returns
 757          * One of three values is returned depending on whether or not the
 758          * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
 759          * (return of 1), or may or may not be AGP (return of 2).
 760          */
 761         int (*device_is_agp) (struct drm_device *dev);
 762
 763         /* these have to be filled in */
 764
 765         irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
 766         void (*irq_preinstall) (struct drm_device *dev);
 767         int (*irq_postinstall) (struct drm_device *dev);
 768         void (*irq_uninstall) (struct drm_device *dev);
 769         void (*reclaim_buffers) (struct drm_device *dev,
 770                                  struct drm_file * file_priv);
 771         void (*reclaim_buffers_locked) (struct drm_device *dev,
 772                                         struct drm_file *file_priv);
 773         void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
 774                                             struct drm_file *file_priv);
 775         void (*set_version) (struct drm_device *dev,
 776                              struct drm_set_version *sv);
 777
 778         /* Master routines */
 779         int (*master_create)(struct drm_device *dev, struct drm_master *master);
 780         void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
 781         /**
 782          * master_set is called whenever the minor master is set.
 783          * master_drop is called whenever the minor master is dropped.
 784          */
 785
 786         int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
 787                           bool from_open);
 788         void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
 789                             bool from_release);
 790
 791         int (*debugfs_init)(struct drm_minor *minor);
 792         void (*debugfs_cleanup)(struct drm_minor *minor);
 793
 794         /**
 795          * Driver-specific constructor for drm_gem_objects, to set up
 796          * obj->driver_private.
 797          *
 798          * Returns 0 on success.
 799          */
 800         int (*gem_init_object) (struct drm_gem_object *obj);
 801         void (*gem_free_object) (struct drm_gem_object *obj);
 802
 803         /* vga arb irq handler */
 804         void (*vgaarb_irq)(struct drm_device *dev, bool state);
 805
 806         /* Driver private ops for this object */
 807         struct vm_operations_struct *gem_vm_ops;
 808
 809         int major;
 810         int minor;
 811         int patchlevel;
 812         char *name;
 813         char *desc;
 814         char *date;
 815
 816         u32 driver_features;
 817         int dev_priv_size;
 818         struct drm_ioctl_desc *ioctls;
 819         int num_ioctls;
 820         struct file_operations fops;
 821         struct pci_driver pci_driver;
 822         struct platform_device *platform_device;
 823         /* List of devices hanging off this driver */
 824         struct list_head device_list;
 825 };
 826
 827 #define DRM_MINOR_UNASSIGNED 0
 828 #define DRM_MINOR_LEGACY 1
 829 #define DRM_MINOR_CONTROL 2
 830 #define DRM_MINOR_RENDER 3
 831
 832
 833 /**
 834  * debugfs node list. This structure represents a debugfs file to
 835  * be created by the drm core
 836  */
 837 struct drm_debugfs_list {
 838         const char *name; /** file name */
 839         int (*show)(struct seq_file*, void*); /** show callback */
 840         u32 driver_features; /**< Required driver features for this entry */
 841 };
 842
 843 /**
 844  * debugfs node structure. This structure represents a debugfs file.
 845  */
 846 struct drm_debugfs_node {
 847         struct list_head list;
 848         struct drm_minor *minor;
 849         struct drm_debugfs_list *debugfs_ent;
 850         struct dentry *dent;
 851 };
 852
 853 /**
 854  * Info file list entry. This structure represents a debugfs or proc file to
 855  * be created by the drm core
 856  */
 857 struct drm_info_list {
 858         const char *name; /** file name */
 859         int (*show)(struct seq_file*, void*); /** show callback */
 860         u32 driver_features; /**< Required driver features for this entry */
 861         void *data;
 862 };
 863
 864 /**
 865  * debugfs node structure. This structure represents a debugfs file.
 866  */
 867 struct drm_info_node {
 868         struct list_head list;
 869         struct drm_minor *minor;
 870         struct drm_info_list *info_ent;
 871         struct dentry *dent;
 872 };
 873
 874 /**
 875  * DRM minor structure. This structure represents a drm minor number.
 876  */
 877 struct drm_minor {
 878         int index;                      /**< Minor device number */
 879         int type;                       /**< Control or render */
 880         dev_t device;                   /**< Device number for mknod */
 881         struct device kdev;             /**< Linux device */
 882         struct drm_device *dev;
 883
 884         struct proc_dir_entry *proc_root;  /**< proc directory entry */
 885         struct drm_info_node proc_nodes;
 886         struct dentry *debugfs_root;
 887         struct drm_info_node debugfs_nodes;
 888
 889         struct drm_master *master; /* currently active master for this node */
 890         struct list_head master_list;
 891         struct drm_mode_group mode_group;
 892 };
 893
 894 struct drm_pending_vblank_event {
 895         struct drm_pending_event base;
 896         int pipe;
 897         struct drm_event_vblank event;
 898 };
 899
 900 /**
 901  * DRM device structure. This structure represent a complete card that
 902  * may contain multiple heads.
 903  */
 904 struct drm_device {
 905         struct list_head driver_item;   /**< list of devices per driver */
 906         char *devname;                  /**< For /proc/interrupts */
 907         int if_version;                 /**< Highest interface version set */
 908
 909         /** \name Locks */
 910         /*@{ */
 911         spinlock_t count_lock;          /**< For inuse, drm_device::open_count, drm_device::buf_use */
 912         struct mutex struct_mutex;      /**< For others */
 913         /*@} */
 914
 915         /** \name Usage Counters */
 916         /*@{ */
 917         int open_count;                 /**< Outstanding files open */
 918         atomic_t ioctl_count;           /**< Outstanding IOCTLs pending */
 919         atomic_t vma_count;             /**< Outstanding vma areas open */
 920         int buf_use;                    /**< Buffers in use -- cannot alloc */
 921         atomic_t buf_alloc;             /**< Buffer allocation in progress */
 922         /*@} */
 923
 924         /** \name Performance counters */
 925         /*@{ */
 926         unsigned long counters;
 927         enum drm_stat_type types[15];
 928         atomic_t counts[15];
 929         /*@} */
 930
 931         struct list_head filelist;
 932
 933         /** \name Memory management */
 934         /*@{ */
 935         struct list_head maplist;       /**< Linked list of regions */
 936         int map_count;                  /**< Number of mappable regions */
 937         struct drm_open_hash map_hash;  /**< User token hash table for maps */
 938
 939         /** \name Context handle management */
 940         /*@{ */
 941         struct list_head ctxlist;       /**< Linked list of context handles */
 942         int ctx_count;                  /**< Number of context handles */
 943         struct mutex ctxlist_mutex;     /**< For ctxlist */
 944
 945         struct idr ctx_idr;
 946
 947         struct list_head vmalist;       /**< List of vmas (for debugging) */
 948
 949         /*@} */
 950
 951         /** \name DMA queues (contexts) */
 952         /*@{ */
 953         int queue_count;                /**< Number of active DMA queues */
 954         int queue_reserved;               /**< Number of reserved DMA queues */
 955         int queue_slots;                /**< Actual length of queuelist */
 956         struct drm_queue **queuelist;   /**< Vector of pointers to DMA queues */
 957         struct drm_device_dma *dma;             /**< Optional pointer for DMA support */
 958         /*@} */
 959
 960         /** \name Context support */
 961         /*@{ */
 962         int irq_enabled;                /**< True if irq handler is enabled */
 963         __volatile__ long context_flag; /**< Context swapping flag */
 964         __volatile__ long interrupt_flag; /**< Interruption handler flag */
 965         __volatile__ long dma_flag;     /**< DMA dispatch flag */
 966         wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
 967         int last_checked;               /**< Last context checked for DMA */
 968         int last_context;               /**< Last current context */
 969         unsigned long last_switch;      /**< jiffies at last context switch */
 970         /*@} */
 971
 972         struct work_struct work;
 973         /** \name VBLANK IRQ support */
 974         /*@{ */
 975
 976         /*
 977          * At load time, disabling the vblank interrupt won't be allowed since
 978          * old clients may not call the modeset ioctl and therefore misbehave.
 979          * Once the modeset ioctl *has* been called though, we can safely
 980          * disable them when unused.
 981          */
 982         int vblank_disable_allowed;
 983
 984         wait_queue_head_t *vbl_queue;   /**< VBLANK wait queue */
 985         atomic_t *_vblank_count;        /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
 986         spinlock_t vbl_lock;
 987         atomic_t *vblank_refcount;      /* number of users of vblank interruptsper crtc */
 988         u32 *last_vblank;               /* protected by dev->vbl_lock, used */
 989                                         /* for wraparound handling */
 990         int *vblank_enabled;            /* so we don't call enable more than
 991                                            once per disable */
 992         int *vblank_inmodeset;          /* Display driver is setting mode */
 993         u32 *last_vblank_wait;          /* Last vblank seqno waited per CRTC */
 994         struct timer_list vblank_disable_timer;
 995
 996         u32 max_vblank_count;           /**< size of vblank counter register */
 997
 998         /**
 999          * List of events
1000          */
1001         struct list_head vblank_event_list;
1002         spinlock_t event_lock;
1003
1004         /*@} */
1005         cycles_t ctx_start;
1006         cycles_t lck_start;
1007
1008         struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1009         wait_queue_head_t buf_readers;  /**< Processes waiting to read */
1010         wait_queue_head_t buf_writers;  /**< Processes waiting to ctx switch */
1011
1012         struct drm_agp_head *agp;       /**< AGP data */
1013
1014         struct device *dev;             /**< Device structure */
1015         struct pci_dev *pdev;           /**< PCI device structure */
1016         int pci_vendor;                 /**< PCI vendor id */
1017         int pci_device;                 /**< PCI device id */
1018 #ifdef __alpha__
1019         struct pci_controller *hose;
1020 #endif
1021
1022         struct platform_device *platformdev; /**< Platform device struture */
1023
1024         struct drm_sg_mem *sg;  /**< Scatter gather memory */
1025         int num_crtcs;                  /**< Number of CRTCs on this device */
1026         void *dev_private;              /**< device private data */
1027         void *mm_private;
1028         struct address_space *dev_mapping;
1029         struct drm_sigdata sigdata;        /**< For block_all_signals */
1030         sigset_t sigmask;
1031
1032         struct drm_driver *driver;
1033         struct drm_local_map *agp_buffer_map;
1034         unsigned int agp_buffer_token;
1035         struct drm_minor *control;              /**< Control node for card */
1036         struct drm_minor *primary;              /**< render type primary screen head */
1037
1038         struct drm_mode_config mode_config;     /**< Current mode config */
1039
1040         /** \name GEM information */
1041         /*@{ */
1042         spinlock_t object_name_lock;
1043         struct idr object_name_idr;
1044         uint32_t invalidate_domains;    /* domains pending invalidation */
1045         uint32_t flush_domains;         /* domains pending flush */
1046         /*@} */
1047
1048 };
1049
1050 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1051                                              int feature)
1052 {
1053         return ((dev->driver->driver_features & feature) ? 1 : 0);
1054 }
1055
1056 static inline int drm_dev_to_irq(struct drm_device *dev)
1057 {
1058         if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
1059                 return platform_get_irq(dev->platformdev, 0);
1060         else
1061                 return dev->pdev->irq;
1062 }
1063
1064 static inline int drm_get_pci_domain(struct drm_device *dev)
1065 {
1066         if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
1067                 return 0;
1068
1069 #ifndef __alpha__
1070         /* For historical reasons, drm_get_pci_domain() is busticated
1071          * on most archs and has to remain so for userspace interface
1072          * < 1.4, except on alpha which was right from the beginning
1073          */
1074         if (dev->if_version < 0x10004)
1075                 return 0;
1076 #endif /* __alpha__ */
1077
1078         return pci_domain_nr(dev->pdev->bus);
1079 }
1080
1081 #if __OS_HAS_AGP
1082 static inline int drm_core_has_AGP(struct drm_device *dev)
1083 {
1084         return drm_core_check_feature(dev, DRIVER_USE_AGP);
1085 }
1086 #else
1087 #define drm_core_has_AGP(dev) (0)
1088 #endif
1089
1090 #if __OS_HAS_MTRR
1091 static inline int drm_core_has_MTRR(struct drm_device *dev)
1092 {
1093         return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1094 }
1095
1096 #define DRM_MTRR_WC             MTRR_TYPE_WRCOMB
1097
1098 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1099                                unsigned int flags)
1100 {
1101         return mtrr_add(offset, size, flags, 1);
1102 }
1103
1104 static inline int drm_mtrr_del(int handle, unsigned long offset,
1105                                unsigned long size, unsigned int flags)
1106 {
1107         return mtrr_del(handle, offset, size);
1108 }
1109
1110 #else
1111 #define drm_core_has_MTRR(dev) (0)
1112
1113 #define DRM_MTRR_WC             0
1114
1115 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1116                                unsigned int flags)
1117 {
1118         return 0;
1119 }
1120
1121 static inline int drm_mtrr_del(int handle, unsigned long offset,
1122                                unsigned long size, unsigned int flags)
1123 {
1124         return 0;
1125 }
1126 #endif
1127
1128 /******************************************************************/
1129 /** \name Internal function definitions */
1130 /*@{*/
1131
1132                                 /* Driver support (drm_drv.h) */
1133 extern int drm_init(struct drm_driver *driver);
1134 extern void drm_exit(struct drm_driver *driver);
1135 extern long drm_ioctl(struct file *filp,
1136                       unsigned int cmd, unsigned long arg);
1137 extern long drm_compat_ioctl(struct file *filp,
1138                              unsigned int cmd, unsigned long arg);
1139 extern int drm_lastclose(struct drm_device *dev);
1140
1141                                 /* Device support (drm_fops.h) */
1142 extern struct mutex drm_global_mutex;
1143 extern int drm_open(struct inode *inode, struct file *filp);
1144 extern int drm_stub_open(struct inode *inode, struct file *filp);
1145 extern int drm_fasync(int fd, struct file *filp, int on);
1146 extern ssize_t drm_read(struct file *filp, char __user *buffer,
1147                         size_t count, loff_t *offset);
1148 extern int drm_release(struct inode *inode, struct file *filp);
1149
1150                                 /* Mapping support (drm_vm.h) */
1151 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1152 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1153 extern void drm_vm_open_locked(struct vm_area_struct *vma);
1154 extern void drm_vm_close_locked(struct vm_area_struct *vma);
1155 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1156
1157                                 /* Memory management support (drm_memory.h) */
1158 #include "drm_memory.h"
1159 extern void drm_mem_init(void);
1160 extern int drm_mem_info(char *buf, char **start, off_t offset,
1161                         int request, int *eof, void *data);
1162 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
1163
1164 extern void drm_free_agp(DRM_AGP_MEM * handle, int pages);
1165 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1166 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1167                                        struct page **pages,
1168                                        unsigned long num_pages,
1169                                        uint32_t gtt_offset,
1170                                        uint32_t type);
1171 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1172
1173                                 /* Misc. IOCTL support (drm_ioctl.h) */
1174 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1175                             struct drm_file *file_priv);
1176 extern int drm_getunique(struct drm_device *dev, void *data,
1177                          struct drm_file *file_priv);
1178 extern int drm_setunique(struct drm_device *dev, void *data,
1179                          struct drm_file *file_priv);
1180 extern int drm_getmap(struct drm_device *dev, void *data,
1181                       struct drm_file *file_priv);
1182 extern int drm_getclient(struct drm_device *dev, void *data,
1183                          struct drm_file *file_priv);
1184 extern int drm_getstats(struct drm_device *dev, void *data,
1185                         struct drm_file *file_priv);
1186 extern int drm_setversion(struct drm_device *dev, void *data,
1187                           struct drm_file *file_priv);
1188 extern int drm_noop(struct drm_device *dev, void *data,
1189                     struct drm_file *file_priv);
1190
1191                                 /* Context IOCTL support (drm_context.h) */
1192 extern int drm_resctx(struct drm_device *dev, void *data,
1193                       struct drm_file *file_priv);
1194 extern int drm_addctx(struct drm_device *dev, void *data,
1195                       struct drm_file *file_priv);
1196 extern int drm_modctx(struct drm_device *dev, void *data,
1197                       struct drm_file *file_priv);
1198 extern int drm_getctx(struct drm_device *dev, void *data,
1199                       struct drm_file *file_priv);
1200 extern int drm_switchctx(struct drm_device *dev, void *data,
1201                          struct drm_file *file_priv);
1202 extern int drm_newctx(struct drm_device *dev, void *data,
1203                       struct drm_file *file_priv);
1204 extern int drm_rmctx(struct drm_device *dev, void *data,
1205                      struct drm_file *file_priv);
1206
1207 extern int drm_ctxbitmap_init(struct drm_device *dev);
1208 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1209 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1210
1211 extern int drm_setsareactx(struct drm_device *dev, void *data,
1212                            struct drm_file *file_priv);
1213 extern int drm_getsareactx(struct drm_device *dev, void *data,
1214                            struct drm_file *file_priv);
1215
1216                                 /* Authentication IOCTL support (drm_auth.h) */
1217 extern int drm_getmagic(struct drm_device *dev, void *data,
1218                         struct drm_file *file_priv);
1219 extern int drm_authmagic(struct drm_device *dev, void *data,
1220                          struct drm_file *file_priv);
1221
1222 /* Cache management (drm_cache.c) */
1223 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1224
1225                                 /* Locking IOCTL support (drm_lock.h) */
1226 extern int drm_lock(struct drm_device *dev, void *data,
1227                     struct drm_file *file_priv);
1228 extern int drm_unlock(struct drm_device *dev, void *data,
1229                       struct drm_file *file_priv);
1230 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1231 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1232 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1233
1234 /*
1235  * These are exported to drivers so that they can implement fencing using
1236  * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1237  */
1238
1239 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1240
1241                                 /* Buffer management support (drm_bufs.h) */
1242 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1243 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1244 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1245                       unsigned int size, enum drm_map_type type,
1246                       enum drm_map_flags flags, struct drm_local_map **map_ptr);
1247 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1248                             struct drm_file *file_priv);
1249 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1250 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1251 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1252                            struct drm_file *file_priv);
1253 extern int drm_addbufs(struct drm_device *dev, void *data,
1254                        struct drm_file *file_priv);
1255 extern int drm_infobufs(struct drm_device *dev, void *data,
1256                         struct drm_file *file_priv);
1257 extern int drm_markbufs(struct drm_device *dev, void *data,
1258                         struct drm_file *file_priv);
1259 extern int drm_freebufs(struct drm_device *dev, void *data,
1260                         struct drm_file *file_priv);
1261 extern int drm_mapbufs(struct drm_device *dev, void *data,
1262                        struct drm_file *file_priv);
1263 extern int drm_order(unsigned long size);
1264
1265                                 /* DMA support (drm_dma.h) */
1266 extern int drm_dma_setup(struct drm_device *dev);
1267 extern void drm_dma_takedown(struct drm_device *dev);
1268 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1269 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1270                                      struct drm_file *filp);
1271
1272                                 /* IRQ support (drm_irq.h) */
1273 extern int drm_control(struct drm_device *dev, void *data,
1274                        struct drm_file *file_priv);
1275 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
1276 extern int drm_irq_install(struct drm_device *dev);
1277 extern int drm_irq_uninstall(struct drm_device *dev);
1278 extern void drm_driver_irq_preinstall(struct drm_device *dev);
1279 extern void drm_driver_irq_postinstall(struct drm_device *dev);
1280 extern void drm_driver_irq_uninstall(struct drm_device *dev);
1281
1282 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1283 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1284                            struct drm_file *filp);
1285 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1286 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1287 extern void drm_handle_vblank(struct drm_device *dev, int crtc);
1288 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1289 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1290 extern void drm_vblank_off(struct drm_device *dev, int crtc);
1291 extern void drm_vblank_cleanup(struct drm_device *dev);
1292 /* Modesetting support */
1293 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1294 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1295 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1296                            struct drm_file *file_priv);
1297
1298                                 /* AGP/GART support (drm_agpsupport.h) */
1299 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1300 extern int drm_agp_acquire(struct drm_device *dev);
1301 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1302                                  struct drm_file *file_priv);
1303 extern int drm_agp_release(struct drm_device *dev);
1304 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1305                                  struct drm_file *file_priv);
1306 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1307 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1308                                 struct drm_file *file_priv);
1309 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1310 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1311                         struct drm_file *file_priv);
1312 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1313 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1314                          struct drm_file *file_priv);
1315 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1316 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1317                         struct drm_file *file_priv);
1318 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1319 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1320                           struct drm_file *file_priv);
1321 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1322 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1323                         struct drm_file *file_priv);
1324 extern void drm_agp_chipset_flush(struct drm_device *dev);
1325
1326                                 /* Stub support (drm_stub.h) */
1327 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1328                                struct drm_file *file_priv);
1329 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1330                                 struct drm_file *file_priv);
1331 struct drm_master *drm_master_create(struct drm_minor *minor);
1332 extern struct drm_master *drm_master_get(struct drm_master *master);
1333 extern void drm_master_put(struct drm_master **master);
1334 extern int drm_get_pci_dev(struct pci_dev *pdev,
1335                            const struct pci_device_id *ent,
1336                            struct drm_driver *driver);
1337 extern int drm_get_platform_dev(struct platform_device *pdev,
1338                                 struct drm_driver *driver);
1339 extern void drm_put_dev(struct drm_device *dev);
1340 extern int drm_put_minor(struct drm_minor **minor);
1341 extern unsigned int drm_debug;
1342
1343 extern struct class *drm_class;
1344 extern struct proc_dir_entry *drm_proc_root;
1345 extern struct dentry *drm_debugfs_root;
1346
1347 extern struct idr drm_minors_idr;
1348
1349 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1350
1351                                 /* Proc support (drm_proc.h) */
1352 extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1353                          struct proc_dir_entry *root);
1354 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1355
1356                                 /* Debugfs support */
1357 #if defined(CONFIG_DEBUG_FS)
1358 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1359                             struct dentry *root);
1360 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1361                                     struct dentry *root, struct drm_minor *minor);
1362 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1363                                     struct drm_minor *minor);
1364 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1365 #endif
1366
1367                                 /* Info file support */
1368 extern int drm_name_info(struct seq_file *m, void *data);
1369 extern int drm_vm_info(struct seq_file *m, void *data);
1370 extern int drm_queues_info(struct seq_file *m, void *data);
1371 extern int drm_bufs_info(struct seq_file *m, void *data);
1372 extern int drm_vblank_info(struct seq_file *m, void *data);
1373 extern int drm_clients_info(struct seq_file *m, void* data);
1374 extern int drm_gem_name_info(struct seq_file *m, void *data);
1375
1376 #if DRM_DEBUG_CODE
1377 extern int drm_vma_info(struct seq_file *m, void *data);
1378 #endif
1379
1380                                 /* Scatter Gather Support (drm_scatter.h) */
1381 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1382 extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1383                         struct drm_file *file_priv);
1384 extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1385 extern int drm_sg_free(struct drm_device *dev, void *data,
1386                        struct drm_file *file_priv);
1387
1388                                /* ATI PCIGART support (ati_pcigart.h) */
1389 extern int drm_ati_pcigart_init(struct drm_device *dev,
1390                                 struct drm_ati_pcigart_info * gart_info);
1391 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1392                                    struct drm_ati_pcigart_info * gart_info);
1393
1394 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1395                                        size_t align);
1396 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1397 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1398
1399                                /* sysfs support (drm_sysfs.c) */
1400 struct drm_sysfs_class;
1401 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1402 extern void drm_sysfs_destroy(void);
1403 extern int drm_sysfs_device_add(struct drm_minor *minor);
1404 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1405 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1406 extern char *drm_get_connector_status_name(enum drm_connector_status status);
1407 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1408 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1409
1410 /* Graphics Execution Manager library functions (drm_gem.c) */
1411 int drm_gem_init(struct drm_device *dev);
1412 void drm_gem_destroy(struct drm_device *dev);
1413 void drm_gem_object_release(struct drm_gem_object *obj);
1414 void drm_gem_object_free(struct kref *kref);
1415 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1416                                             size_t size);
1417 int drm_gem_object_init(struct drm_device *dev,
1418                         struct drm_gem_object *obj, size_t size);
1419 void drm_gem_object_handle_free(struct drm_gem_object *obj);
1420 void drm_gem_vm_open(struct vm_area_struct *vma);
1421 void drm_gem_vm_close(struct vm_area_struct *vma);
1422 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1423
1424 #include "drm_global.h"
1425
1426 static inline void
1427 drm_gem_object_reference(struct drm_gem_object *obj)
1428 {
1429         kref_get(&obj->refcount);
1430 }
1431
1432 static inline void
1433 drm_gem_object_unreference(struct drm_gem_object *obj)
1434 {
1435         if (obj != NULL)
1436                 kref_put(&obj->refcount, drm_gem_object_free);
1437 }
1438
1439 static inline void
1440 drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
1441 {
1442         if (obj != NULL) {
1443                 struct drm_device *dev = obj->dev;
1444                 mutex_lock(&dev->struct_mutex);
1445                 kref_put(&obj->refcount, drm_gem_object_free);
1446                 mutex_unlock(&dev->struct_mutex);
1447         }
1448 }
1449
1450 int drm_gem_handle_create(struct drm_file *file_priv,
1451                           struct drm_gem_object *obj,
1452                           u32 *handlep);
1453
1454 static inline void
1455 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1456 {
1457         drm_gem_object_reference(obj);
1458         atomic_inc(&obj->handle_count);
1459 }
1460
1461 static inline void
1462 drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1463 {
1464         if (obj == NULL)
1465                 return;
1466
1467         if (atomic_read(&obj->handle_count) == 0)
1468                 return;
1469         /*
1470          * Must bump handle count first as this may be the last
1471          * ref, in which case the object would disappear before we
1472          * checked for a name
1473          */
1474         if (atomic_dec_and_test(&obj->handle_count))
1475                 drm_gem_object_handle_free(obj);
1476         drm_gem_object_unreference(obj);
1477 }
1478
1479 static inline void
1480 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj)
1481 {
1482         if (obj == NULL)
1483                 return;
1484
1485         if (atomic_read(&obj->handle_count) == 0)
1486                 return;
1487
1488         /*
1489         * Must bump handle count first as this may be the last
1490         * ref, in which case the object would disappear before we
1491         * checked for a name
1492         */
1493
1494         if (atomic_dec_and_test(&obj->handle_count))
1495                 drm_gem_object_handle_free(obj);
1496         drm_gem_object_unreference_unlocked(obj);
1497 }
1498
1499 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1500                                              struct drm_file *filp,
1501                                              u32 handle);
1502 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1503                         struct drm_file *file_priv);
1504 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1505                         struct drm_file *file_priv);
1506 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1507                        struct drm_file *file_priv);
1508 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1509 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1510
1511 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1512 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1513 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1514
1515 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1516                                                          unsigned int token)
1517 {
1518         struct drm_map_list *_entry;
1519         list_for_each_entry(_entry, &dev->maplist, head)
1520             if (_entry->user_token == token)
1521                 return _entry->map;
1522         return NULL;
1523 }
1524
1525 static __inline__ int drm_device_is_agp(struct drm_device *dev)
1526 {
1527         if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
1528                 return 0;
1529
1530         if (dev->driver->device_is_agp != NULL) {
1531                 int err = (*dev->driver->device_is_agp) (dev);
1532
1533                 if (err != 2) {
1534                         return err;
1535                 }
1536         }
1537
1538         return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1539 }
1540
1541 static __inline__ int drm_device_is_pcie(struct drm_device *dev)
1542 {
1543         if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
1544                 return 0;
1545         else
1546                 return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1547 }
1548
1549 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1550 {
1551 }
1552
1553 #include "drm_mem_util.h"
1554
1555 static inline void *drm_get_device(struct drm_device *dev)
1556 {
1557         if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE))
1558                 return dev->platformdev;
1559         else
1560                 return dev->pdev;
1561 }
1562
1563 extern int drm_platform_init(struct drm_driver *driver);
1564 extern int drm_pci_init(struct drm_driver *driver);
1565 extern int drm_fill_in_dev(struct drm_device *dev,
1566                            const struct pci_device_id *ent,
1567                            struct drm_driver *driver);
1568 int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type);
1569 /*@}*/
1570
1571 #endif                          /* __KERNEL__ */
1572 #endif