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 /*
  92  * Three debug levels are defined.
  93  * drm_core, drm_driver, drm_kms
  94  * drm_core level can be used in the generic drm code. For example:
  95  *      drm_ioctl, drm_mm, drm_memory
  96  * The macro definiton of DRM_DEBUG is used.
  97  *      DRM_DEBUG(fmt, args...)
  98  *      The debug info by using the DRM_DEBUG can be obtained by adding
  99  *      the boot option of "drm.debug=1".
 100  *
 101  * drm_driver level can be used in the specific drm driver. It is used
 102  * to add the debug info related with the drm driver. For example:
 103  * i915_drv, i915_dma, i915_gem, radeon_drv,
 104  *      The macro definition of DRM_DEBUG_DRIVER can be used.
 105  *      DRM_DEBUG_DRIVER(fmt, args...)
 106  *      The debug info by using the DRM_DEBUG_DRIVER can be obtained by
 107  *      adding the boot option of "drm.debug=0x02"
 108  *
 109  * drm_kms level can be used in the KMS code related with specific drm driver.
 110  * It is used to add the debug info related with KMS mode. For example:
 111  * the connector/crtc ,
 112  *      The macro definition of DRM_DEBUG_KMS can be used.
 113  *      DRM_DEBUG_KMS(fmt, args...)
 114  *      The debug info by using the DRM_DEBUG_KMS can be obtained by
 115  *      adding the boot option of "drm.debug=0x04"
 116  *
 117  * If we add the boot option of "drm.debug=0x06", we can get the debug info by
 118  * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
 119  * If we add the boot option of "drm.debug=0x05", we can get the debug info by
 120  * using the DRM_DEBUG_KMS and DRM_DEBUG.
 121  */
 122
 123 extern void drm_ut_debug_printk(unsigned int request_level,
 124                                 const char *prefix,
 125                                 const char *function_name,
 126                                 const char *format, ...);
 127 /***********************************************************************/
 128 /** \name DRM template customization defaults */
 129 /*@{*/
 130
 131 /* driver capabilities and requirements mask */
 132 #define DRIVER_USE_AGP     0x1
 133 #define DRIVER_REQUIRE_AGP 0x2
 134 #define DRIVER_USE_MTRR    0x4
 135 #define DRIVER_PCI_DMA     0x8
 136 #define DRIVER_SG          0x10
 137 #define DRIVER_HAVE_DMA    0x20
 138 #define DRIVER_HAVE_IRQ    0x40
 139 #define DRIVER_IRQ_SHARED  0x80
 140 #define DRIVER_IRQ_VBL     0x100
 141 #define DRIVER_DMA_QUEUE   0x200
 142 #define DRIVER_FB_DMA      0x400
 143 #define DRIVER_IRQ_VBL2    0x800
 144 #define DRIVER_GEM         0x1000
 145 #define DRIVER_MODESET     0x2000
 146
 147 /***********************************************************************/
 148 /** \name Begin the DRM... */
 149 /*@{*/
 150
 151 #define DRM_DEBUG_CODE 2          /**< Include debugging code if > 1, then
 152                                      also include looping detection. */
 153
 154 #define DRM_MAGIC_HASH_ORDER  4  /**< Size of key hash table. Must be power of 2. */
 155 #define DRM_KERNEL_CONTEXT    0  /**< Change drm_resctx if changed */
 156 #define DRM_RESERVED_CONTEXTS 1  /**< Change drm_resctx if changed */
 157 #define DRM_LOOPING_LIMIT     5000000
 158 #define DRM_TIME_SLICE        (HZ/20)  /**< Time slice for GLXContexts */
 159 #define DRM_LOCK_SLICE        1 /**< Time slice for lock, in jiffies */
 160
 161 #define DRM_FLAG_DEBUG    0x01
 162
 163 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
 164 #define DRM_MAP_HASH_OFFSET 0x10000000
 165
 166 /*@}*/
 167
 168 /***********************************************************************/
 169 /** \name Macros to make printk easier */
 170 /*@{*/
 171
 172 /**
 173  * Error output.
 174  *
 175  * \param fmt printf() like format string.
 176  * \param arg arguments
 177  */
 178 #define DRM_ERROR(fmt, arg...) \
 179         printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __func__ , ##arg)
 180
 181 /**
 182  * Memory error output.
 183  *
 184  * \param area memory area where the error occurred.
 185  * \param fmt printf() like format string.
 186  * \param arg arguments
 187  */
 188 #define DRM_MEM_ERROR(area, fmt, arg...) \
 189         printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __func__, \
 190                drm_mem_stats[area].name , ##arg)
 191
 192 #define DRM_INFO(fmt, arg...)  printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
 193
 194 /**
 195  * Debug output.
 196  *
 197  * \param fmt printf() like format string.
 198  * \param arg arguments
 199  */
 200 #if DRM_DEBUG_CODE
 201 #define DRM_DEBUG(fmt, args...)                                         \
 202         do {                                                            \
 203                 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME,              \
 204                                         __func__, fmt, ##args);         \
 205         } while (0)
 206
 207 #define DRM_DEBUG_DRIVER(fmt, args...)                                  \
 208         do {                                                            \
 209                 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME,            \
 210                                         __func__, fmt, ##args);         \
 211         } while (0)
 212 #define DRM_DEBUG_KMS(fmt, args...)                             \
 213         do {                                                            \
 214                 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME,               \
 215                                          __func__, fmt, ##args);        \
 216         } while (0)
 217 #define DRM_LOG(fmt, args...)                                           \
 218         do {                                                            \
 219                 drm_ut_debug_printk(DRM_UT_CORE, NULL,                  \
 220                                         NULL, fmt, ##args);             \
 221         } while (0)
 222 #define DRM_LOG_KMS(fmt, args...)                                       \
 223         do {                                                            \
 224                 drm_ut_debug_printk(DRM_UT_KMS, NULL,                   \
 225                                         NULL, fmt, ##args);             \
 226         } while (0)
 227 #define DRM_LOG_MODE(fmt, args...)                                      \
 228         do {                                                            \
 229                 drm_ut_debug_printk(DRM_UT_MODE, NULL,                  \
 230                                         NULL, fmt, ##args);             \
 231         } while (0)
 232 #define DRM_LOG_DRIVER(fmt, args...)                                    \
 233         do {                                                            \
 234                 drm_ut_debug_printk(DRM_UT_DRIVER, NULL,                \
 235                                         NULL, fmt, ##args);             \
 236         } while (0)
 237 #else
 238 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
 239 #define DRM_DEBUG_KMS(fmt, args...)     do { } while (0)
 240 #define DRM_DEBUG(fmt, arg...)           do { } while (0)
 241 #define DRM_LOG(fmt, arg...)            do { } while (0)
 242 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
 243 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
 244 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
 245
 246 #endif
 247
 248 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
 249
 250 #define DRM_PROC_PRINT(fmt, arg...)                                     \
 251    len += sprintf(&buf[len], fmt , ##arg);                              \
 252    if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
 253
 254 #define DRM_PROC_PRINT_RET(ret, fmt, arg...)                            \
 255    len += sprintf(&buf[len], fmt , ##arg);                              \
 256    if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
 257
 258 /*@}*/
 259
 260 /***********************************************************************/
 261 /** \name Internal types and structures */
 262 /*@{*/
 263
 264 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
 265
 266 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
 267 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
 268 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
 269
 270 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 271 /**
 272  * Get the private SAREA mapping.
 273  *
 274  * \param _dev DRM device.
 275  * \param _ctx context number.
 276  * \param _map output mapping.
 277  */
 278 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do {       \
 279         (_map) = (_dev)->context_sareas[_ctx];          \
 280 } while(0)
 281
 282 /**
 283  * Test that the hardware lock is held by the caller, returning otherwise.
 284  *
 285  * \param dev DRM device.
 286  * \param filp file pointer of the caller.
 287  */
 288 #define LOCK_TEST_WITH_RETURN( dev, _file_priv )                                \
 289 do {                                                                            \
 290         if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) ||       \
 291             _file_priv->master->lock.file_priv != _file_priv)   {               \
 292                 DRM_ERROR( "%s called without lock held, held  %d owner %p %p\n",\
 293                            __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
 294                            _file_priv->master->lock.file_priv, _file_priv);     \
 295                 return -EINVAL;                                                 \
 296         }                                                                       \
 297 } while (0)
 298
 299 /**
 300  * Copy and IOCTL return string to user space
 301  */
 302 #define DRM_COPY( name, value )                                         \
 303         len = strlen( value );                                          \
 304         if ( len > name##_len ) len = name##_len;                       \
 305         name##_len = strlen( value );                                   \
 306         if ( len && name ) {                                            \
 307                 if ( copy_to_user( name, value, len ) )                 \
 308                         return -EFAULT;                                 \
 309         }
 310
 311 /**
 312  * Ioctl function type.
 313  *
 314  * \param inode device inode.
 315  * \param file_priv DRM file private pointer.
 316  * \param cmd command.
 317  * \param arg argument.
 318  */
 319 typedef int drm_ioctl_t(struct drm_device *dev, void *data,
 320                         struct drm_file *file_priv);
 321
 322 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
 323                                unsigned long arg);
 324
 325 #define DRM_AUTH        0x1
 326 #define DRM_MASTER      0x2
 327 #define DRM_ROOT_ONLY   0x4
 328 #define DRM_CONTROL_ALLOW 0x8
 329
 330 struct drm_ioctl_desc {
 331         unsigned int cmd;
 332         int flags;
 333         drm_ioctl_t *func;
 334 };
 335
 336 /**
 337  * Creates a driver or general drm_ioctl_desc array entry for the given
 338  * ioctl, for use by drm_ioctl().
 339  */
 340 #define DRM_IOCTL_DEF(ioctl, _func, _flags) \
 341         [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags}
 342
 343 struct drm_magic_entry {
 344         struct list_head head;
 345         struct drm_hash_item hash_item;
 346         struct drm_file *priv;
 347 };
 348
 349 struct drm_vma_entry {
 350         struct list_head head;
 351         struct vm_area_struct *vma;
 352         pid_t pid;
 353 };
 354
 355 /**
 356  * DMA buffer.
 357  */
 358 struct drm_buf {
 359         int idx;                       /**< Index into master buflist */
 360         int total;                     /**< Buffer size */
 361         int order;                     /**< log-base-2(total) */
 362         int used;                      /**< Amount of buffer in use (for DMA) */
 363         unsigned long offset;          /**< Byte offset (used internally) */
 364         void *address;                 /**< Address of buffer */
 365         unsigned long bus_address;     /**< Bus address of buffer */
 366         struct drm_buf *next;          /**< Kernel-only: used for free list */
 367         __volatile__ int waiting;      /**< On kernel DMA queue */
 368         __volatile__ int pending;      /**< On hardware DMA queue */
 369         wait_queue_head_t dma_wait;    /**< Processes waiting */
 370         struct drm_file *file_priv;    /**< Private of holding file descr */
 371         int context;                   /**< Kernel queue for this buffer */
 372         int while_locked;              /**< Dispatch this buffer while locked */
 373         enum {
 374                 DRM_LIST_NONE = 0,
 375                 DRM_LIST_FREE = 1,
 376                 DRM_LIST_WAIT = 2,
 377                 DRM_LIST_PEND = 3,
 378                 DRM_LIST_PRIO = 4,
 379                 DRM_LIST_RECLAIM = 5
 380         } list;                        /**< Which list we're on */
 381
 382         int dev_priv_size;               /**< Size of buffer private storage */
 383         void *dev_private;               /**< Per-buffer private storage */
 384 };
 385
 386 /** bufs is one longer than it has to be */
 387 struct drm_waitlist {
 388         int count;                      /**< Number of possible buffers */
 389         struct drm_buf **bufs;          /**< List of pointers to buffers */
 390         struct drm_buf **rp;                    /**< Read pointer */
 391         struct drm_buf **wp;                    /**< Write pointer */
 392         struct drm_buf **end;           /**< End pointer */
 393         spinlock_t read_lock;
 394         spinlock_t write_lock;
 395 };
 396
 397 struct drm_freelist {
 398         int initialized;               /**< Freelist in use */
 399         atomic_t count;                /**< Number of free buffers */
 400         struct drm_buf *next;          /**< End pointer */
 401
 402         wait_queue_head_t waiting;     /**< Processes waiting on free bufs */
 403         int low_mark;                  /**< Low water mark */
 404         int high_mark;                 /**< High water mark */
 405         atomic_t wfh;                  /**< If waiting for high mark */
 406         spinlock_t lock;
 407 };
 408
 409 typedef struct drm_dma_handle {
 410         dma_addr_t busaddr;
 411         void *vaddr;
 412         size_t size;
 413 } drm_dma_handle_t;
 414
 415 /**
 416  * Buffer entry.  There is one of this for each buffer size order.
 417  */
 418 struct drm_buf_entry {
 419         int buf_size;                   /**< size */
 420         int buf_count;                  /**< number of buffers */
 421         struct drm_buf *buflist;                /**< buffer list */
 422         int seg_count;
 423         int page_order;
 424         struct drm_dma_handle **seglist;
 425
 426         struct drm_freelist freelist;
 427 };
 428
 429 /** File private data */
 430 struct drm_file {
 431         int authenticated;
 432         pid_t pid;
 433         uid_t uid;
 434         drm_magic_t magic;
 435         unsigned long ioctl_count;
 436         struct list_head lhead;
 437         struct drm_minor *minor;
 438         unsigned long lock_count;
 439
 440         /** Mapping of mm object handles to object pointers. */
 441         struct idr object_idr;
 442         /** Lock for synchronization of access to object_idr. */
 443         spinlock_t table_lock;
 444
 445         struct file *filp;
 446         void *driver_priv;
 447
 448         int is_master; /* this file private is a master for a minor */
 449         struct drm_master *master; /* master this node is currently associated with
 450                                       N.B. not always minor->master */
 451         struct list_head fbs;
 452 };
 453
 454 /** Wait queue */
 455 struct drm_queue {
 456         atomic_t use_count;             /**< Outstanding uses (+1) */
 457         atomic_t finalization;          /**< Finalization in progress */
 458         atomic_t block_count;           /**< Count of processes waiting */
 459         atomic_t block_read;            /**< Queue blocked for reads */
 460         wait_queue_head_t read_queue;   /**< Processes waiting on block_read */
 461         atomic_t block_write;           /**< Queue blocked for writes */
 462         wait_queue_head_t write_queue;  /**< Processes waiting on block_write */
 463         atomic_t total_queued;          /**< Total queued statistic */
 464         atomic_t total_flushed;         /**< Total flushes statistic */
 465         atomic_t total_locks;           /**< Total locks statistics */
 466         enum drm_ctx_flags flags;       /**< Context preserving and 2D-only */
 467         struct drm_waitlist waitlist;   /**< Pending buffers */
 468         wait_queue_head_t flush_queue;  /**< Processes waiting until flush */
 469 };
 470
 471 /**
 472  * Lock data.
 473  */
 474 struct drm_lock_data {
 475         struct drm_hw_lock *hw_lock;    /**< Hardware lock */
 476         /** Private of lock holder's file (NULL=kernel) */
 477         struct drm_file *file_priv;
 478         wait_queue_head_t lock_queue;   /**< Queue of blocked processes */
 479         unsigned long lock_time;        /**< Time of last lock in jiffies */
 480         spinlock_t spinlock;
 481         uint32_t kernel_waiters;
 482         uint32_t user_waiters;
 483         int idle_has_lock;
 484 };
 485
 486 /**
 487  * DMA data.
 488  */
 489 struct drm_device_dma {
 490
 491         struct drm_buf_entry bufs[DRM_MAX_ORDER + 1];   /**< buffers, grouped by their size order */
 492         int buf_count;                  /**< total number of buffers */
 493         struct drm_buf **buflist;               /**< Vector of pointers into drm_device_dma::bufs */
 494         int seg_count;
 495         int page_count;                 /**< number of pages */
 496         unsigned long *pagelist;        /**< page list */
 497         unsigned long byte_count;
 498         enum {
 499                 _DRM_DMA_USE_AGP = 0x01,
 500                 _DRM_DMA_USE_SG = 0x02,
 501                 _DRM_DMA_USE_FB = 0x04,
 502                 _DRM_DMA_USE_PCI_RO = 0x08
 503         } flags;
 504
 505 };
 506
 507 /**
 508  * AGP memory entry.  Stored as a doubly linked list.
 509  */
 510 struct drm_agp_mem {
 511         unsigned long handle;           /**< handle */
 512         DRM_AGP_MEM *memory;
 513         unsigned long bound;            /**< address */
 514         int pages;
 515         struct list_head head;
 516 };
 517
 518 /**
 519  * AGP data.
 520  *
 521  * \sa drm_agp_init() and drm_device::agp.
 522  */
 523 struct drm_agp_head {
 524         DRM_AGP_KERN agp_info;          /**< AGP device information */
 525         struct list_head memory;
 526         unsigned long mode;             /**< AGP mode */
 527         struct agp_bridge_data *bridge;
 528         int enabled;                    /**< whether the AGP bus as been enabled */
 529         int acquired;                   /**< whether the AGP device has been acquired */
 530         unsigned long base;
 531         int agp_mtrr;
 532         int cant_use_aperture;
 533         unsigned long page_mask;
 534 };
 535
 536 /**
 537  * Scatter-gather memory.
 538  */
 539 struct drm_sg_mem {
 540         unsigned long handle;
 541         void *virtual;
 542         int pages;
 543         struct page **pagelist;
 544         dma_addr_t *busaddr;
 545 };
 546
 547 struct drm_sigdata {
 548         int context;
 549         struct drm_hw_lock *lock;
 550 };
 551
 552
 553 /**
 554  * Kernel side of a mapping
 555  */
 556 struct drm_local_map {
 557         resource_size_t offset;  /**< Requested physical address (0 for SAREA)*/
 558         unsigned long size;      /**< Requested physical size (bytes) */
 559         enum drm_map_type type;  /**< Type of memory to map */
 560         enum drm_map_flags flags;        /**< Flags */
 561         void *handle;            /**< User-space: "Handle" to pass to mmap() */
 562                                  /**< Kernel-space: kernel-virtual address */
 563         int mtrr;                /**< MTRR slot used */
 564 };
 565
 566 typedef struct drm_local_map drm_local_map_t;
 567
 568 /**
 569  * Mappings list
 570  */
 571 struct drm_map_list {
 572         struct list_head head;          /**< list head */
 573         struct drm_hash_item hash;
 574         struct drm_local_map *map;      /**< mapping */
 575         uint64_t user_token;
 576         struct drm_master *master;
 577         struct drm_mm_node *file_offset_node;   /**< fake offset */
 578 };
 579
 580 /**
 581  * Context handle list
 582  */
 583 struct drm_ctx_list {
 584         struct list_head head;          /**< list head */
 585         drm_context_t handle;           /**< context handle */
 586         struct drm_file *tag;           /**< associated fd private data */
 587 };
 588
 589 /* location of GART table */
 590 #define DRM_ATI_GART_MAIN 1
 591 #define DRM_ATI_GART_FB   2
 592
 593 #define DRM_ATI_GART_PCI 1
 594 #define DRM_ATI_GART_PCIE 2
 595 #define DRM_ATI_GART_IGP 3
 596
 597 struct drm_ati_pcigart_info {
 598         int gart_table_location;
 599         int gart_reg_if;
 600         void *addr;
 601         dma_addr_t bus_addr;
 602         dma_addr_t table_mask;
 603         struct drm_dma_handle *table_handle;
 604         struct drm_local_map mapping;
 605         int table_size;
 606 };
 607
 608 /**
 609  * GEM specific mm private for tracking GEM objects
 610  */
 611 struct drm_gem_mm {
 612         struct drm_mm offset_manager;   /**< Offset mgmt for buffer objects */
 613         struct drm_open_hash offset_hash; /**< User token hash table for maps */
 614 };
 615
 616 /**
 617  * This structure defines the drm_mm memory object, which will be used by the
 618  * DRM for its buffer objects.
 619  */
 620 struct drm_gem_object {
 621         /** Reference count of this object */
 622         struct kref refcount;
 623
 624         /** Handle count of this object. Each handle also holds a reference */
 625         struct kref handlecount;
 626
 627         /** Related drm device */
 628         struct drm_device *dev;
 629
 630         /** File representing the shmem storage */
 631         struct file *filp;
 632
 633         /* Mapping info for this object */
 634         struct drm_map_list map_list;
 635
 636         /**
 637          * Size of the object, in bytes.  Immutable over the object's
 638          * lifetime.
 639          */
 640         size_t size;
 641
 642         /**
 643          * Global name for this object, starts at 1. 0 means unnamed.
 644          * Access is covered by the object_name_lock in the related drm_device
 645          */
 646         int name;
 647
 648         /**
 649          * Memory domains. These monitor which caches contain read/write data
 650          * related to the object. When transitioning from one set of domains
 651          * to another, the driver is called to ensure that caches are suitably
 652          * flushed and invalidated
 653          */
 654         uint32_t read_domains;
 655         uint32_t write_domain;
 656
 657         /**
 658          * While validating an exec operation, the
 659          * new read/write domain values are computed here.
 660          * They will be transferred to the above values
 661          * at the point that any cache flushing occurs
 662          */
 663         uint32_t pending_read_domains;
 664         uint32_t pending_write_domain;
 665
 666         void *driver_private;
 667 };
 668
 669 #include "drm_crtc.h"
 670
 671 /* per-master structure */
 672 struct drm_master {
 673
 674         struct kref refcount; /* refcount for this master */
 675
 676         struct list_head head; /**< each minor contains a list of masters */
 677         struct drm_minor *minor; /**< link back to minor we are a master for */
 678
 679         char *unique;                   /**< Unique identifier: e.g., busid */
 680         int unique_len;                 /**< Length of unique field */
 681         int unique_size;                /**< amount allocated */
 682
 683         int blocked;                    /**< Blocked due to VC switch? */
 684
 685         /** \name Authentication */
 686         /*@{ */
 687         struct drm_open_hash magiclist;
 688         struct list_head magicfree;
 689         /*@} */
 690
 691         struct drm_lock_data lock;      /**< Information on hardware lock */
 692
 693         void *driver_priv; /**< Private structure for driver to use */
 694 };
 695
 696 /**
 697  * DRM driver structure. This structure represent the common code for
 698  * a family of cards. There will one drm_device for each card present
 699  * in this family
 700  */
 701 struct drm_driver {
 702         int (*load) (struct drm_device *, unsigned long flags);
 703         int (*firstopen) (struct drm_device *);
 704         int (*open) (struct drm_device *, struct drm_file *);
 705         void (*preclose) (struct drm_device *, struct drm_file *file_priv);
 706         void (*postclose) (struct drm_device *, struct drm_file *);
 707         void (*lastclose) (struct drm_device *);
 708         int (*unload) (struct drm_device *);
 709         int (*suspend) (struct drm_device *, pm_message_t state);
 710         int (*resume) (struct drm_device *);
 711         int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
 712         void (*dma_ready) (struct drm_device *);
 713         int (*dma_quiescent) (struct drm_device *);
 714         int (*context_ctor) (struct drm_device *dev, int context);
 715         int (*context_dtor) (struct drm_device *dev, int context);
 716         int (*kernel_context_switch) (struct drm_device *dev, int old,
 717                                       int new);
 718         void (*kernel_context_switch_unlock) (struct drm_device *dev);
 719
 720         /**
 721          * get_vblank_counter - get raw hardware vblank counter
 722          * @dev: DRM device
 723          * @crtc: counter to fetch
 724          *
 725          * Driver callback for fetching a raw hardware vblank counter
 726          * for @crtc.  If a device doesn't have a hardware counter, the
 727          * driver can simply return the value of drm_vblank_count and
 728          * make the enable_vblank() and disable_vblank() hooks into no-ops,
 729          * leaving interrupts enabled at all times.
 730          *
 731          * Wraparound handling and loss of events due to modesetting is dealt
 732          * with in the DRM core code.
 733          *
 734          * RETURNS
 735          * Raw vblank counter value.
 736          */
 737         u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
 738
 739         /**
 740          * enable_vblank - enable vblank interrupt events
 741          * @dev: DRM device
 742          * @crtc: which irq to enable
 743          *
 744          * Enable 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          * RETURNS
 749          * Zero on success, appropriate errno if the given @crtc's vblank
 750          * interrupt cannot be enabled.
 751          */
 752         int (*enable_vblank) (struct drm_device *dev, int crtc);
 753
 754         /**
 755          * disable_vblank - disable vblank interrupt events
 756          * @dev: DRM device
 757          * @crtc: which irq to enable
 758          *
 759          * Disable vblank interrupts for @crtc.  If the device doesn't have
 760          * a hardware vblank counter, this routine should be a no-op, since
 761          * interrupts will have to stay on to keep the count accurate.
 762          */
 763         void (*disable_vblank) (struct drm_device *dev, int crtc);
 764
 765         /**
 766          * Called by \c drm_device_is_agp.  Typically used to determine if a
 767          * card is really attached to AGP or not.
 768          *
 769          * \param dev  DRM device handle
 770          *
 771          * \returns
 772          * One of three values is returned depending on whether or not the
 773          * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
 774          * (return of 1), or may or may not be AGP (return of 2).
 775          */
 776         int (*device_is_agp) (struct drm_device *dev);
 777
 778         /* these have to be filled in */
 779
 780         irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
 781         void (*irq_preinstall) (struct drm_device *dev);
 782         int (*irq_postinstall) (struct drm_device *dev);
 783         void (*irq_uninstall) (struct drm_device *dev);
 784         void (*reclaim_buffers) (struct drm_device *dev,
 785                                  struct drm_file * file_priv);
 786         void (*reclaim_buffers_locked) (struct drm_device *dev,
 787                                         struct drm_file *file_priv);
 788         void (*reclaim_buffers_idlelocked) (struct drm_device *dev,
 789                                             struct drm_file *file_priv);
 790         resource_size_t (*get_map_ofs) (struct drm_local_map * map);
 791         resource_size_t (*get_reg_ofs) (struct drm_device *dev);
 792         void (*set_version) (struct drm_device *dev,
 793                              struct drm_set_version *sv);
 794
 795         /* Master routines */
 796         int (*master_create)(struct drm_device *dev, struct drm_master *master);
 797         void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
 798
 799         int (*proc_init)(struct drm_minor *minor);
 800         void (*proc_cleanup)(struct drm_minor *minor);
 801         int (*debugfs_init)(struct drm_minor *minor);
 802         void (*debugfs_cleanup)(struct drm_minor *minor);
 803
 804         /**
 805          * Driver-specific constructor for drm_gem_objects, to set up
 806          * obj->driver_private.
 807          *
 808          * Returns 0 on success.
 809          */
 810         int (*gem_init_object) (struct drm_gem_object *obj);
 811         void (*gem_free_object) (struct drm_gem_object *obj);
 812
 813         /* vga arb irq handler */
 814         void (*vgaarb_irq)(struct drm_device *dev, bool state);
 815
 816         /* Driver private ops for this object */
 817         struct vm_operations_struct *gem_vm_ops;
 818
 819         int major;
 820         int minor;
 821         int patchlevel;
 822         char *name;
 823         char *desc;
 824         char *date;
 825
 826         u32 driver_features;
 827         int dev_priv_size;
 828         struct drm_ioctl_desc *ioctls;
 829         int num_ioctls;
 830         struct file_operations fops;
 831         struct pci_driver pci_driver;
 832         /* List of devices hanging off this driver */
 833         struct list_head device_list;
 834 };
 835
 836 #define DRM_MINOR_UNASSIGNED 0
 837 #define DRM_MINOR_LEGACY 1
 838 #define DRM_MINOR_CONTROL 2
 839 #define DRM_MINOR_RENDER 3
 840
 841
 842 /**
 843  * debugfs node list. This structure represents a debugfs file to
 844  * be created by the drm core
 845  */
 846 struct drm_debugfs_list {
 847         const char *name; /** file name */
 848         int (*show)(struct seq_file*, void*); /** show callback */
 849         u32 driver_features; /**< Required driver features for this entry */
 850 };
 851
 852 /**
 853  * debugfs node structure. This structure represents a debugfs file.
 854  */
 855 struct drm_debugfs_node {
 856         struct list_head list;
 857         struct drm_minor *minor;
 858         struct drm_debugfs_list *debugfs_ent;
 859         struct dentry *dent;
 860 };
 861
 862 /**
 863  * Info file list entry. This structure represents a debugfs or proc file to
 864  * be created by the drm core
 865  */
 866 struct drm_info_list {
 867         const char *name; /** file name */
 868         int (*show)(struct seq_file*, void*); /** show callback */
 869         u32 driver_features; /**< Required driver features for this entry */
 870         void *data;
 871 };
 872
 873 /**
 874  * debugfs node structure. This structure represents a debugfs file.
 875  */
 876 struct drm_info_node {
 877         struct list_head list;
 878         struct drm_minor *minor;
 879         struct drm_info_list *info_ent;
 880         struct dentry *dent;
 881 };
 882
 883 /**
 884  * DRM minor structure. This structure represents a drm minor number.
 885  */
 886 struct drm_minor {
 887         int index;                      /**< Minor device number */
 888         int type;                       /**< Control or render */
 889         dev_t device;                   /**< Device number for mknod */
 890         struct device kdev;             /**< Linux device */
 891         struct drm_device *dev;
 892
 893         struct proc_dir_entry *proc_root;  /**< proc directory entry */
 894         struct drm_info_node proc_nodes;
 895         struct dentry *debugfs_root;
 896         struct drm_info_node debugfs_nodes;
 897
 898         struct drm_master *master; /* currently active master for this node */
 899         struct list_head master_list;
 900         struct drm_mode_group mode_group;
 901 };
 902
 903 /**
 904  * DRM device structure. This structure represent a complete card that
 905  * may contain multiple heads.
 906  */
 907 struct drm_device {
 908         struct list_head driver_item;   /**< list of devices per driver */
 909         char *devname;                  /**< For /proc/interrupts */
 910         int if_version;                 /**< Highest interface version set */
 911
 912         /** \name Locks */
 913         /*@{ */
 914         spinlock_t count_lock;          /**< For inuse, drm_device::open_count, drm_device::buf_use */
 915         struct mutex struct_mutex;      /**< For others */
 916         /*@} */
 917
 918         /** \name Usage Counters */
 919         /*@{ */
 920         int open_count;                 /**< Outstanding files open */
 921         atomic_t ioctl_count;           /**< Outstanding IOCTLs pending */
 922         atomic_t vma_count;             /**< Outstanding vma areas open */
 923         int buf_use;                    /**< Buffers in use -- cannot alloc */
 924         atomic_t buf_alloc;             /**< Buffer allocation in progress */
 925         /*@} */
 926
 927         /** \name Performance counters */
 928         /*@{ */
 929         unsigned long counters;
 930         enum drm_stat_type types[15];
 931         atomic_t counts[15];
 932         /*@} */
 933
 934         struct list_head filelist;
 935
 936         /** \name Memory management */
 937         /*@{ */
 938         struct list_head maplist;       /**< Linked list of regions */
 939         int map_count;                  /**< Number of mappable regions */
 940         struct drm_open_hash map_hash;  /**< User token hash table for maps */
 941
 942         /** \name Context handle management */
 943         /*@{ */
 944         struct list_head ctxlist;       /**< Linked list of context handles */
 945         int ctx_count;                  /**< Number of context handles */
 946         struct mutex ctxlist_mutex;     /**< For ctxlist */
 947
 948         struct idr ctx_idr;
 949
 950         struct list_head vmalist;       /**< List of vmas (for debugging) */
 951
 952         /*@} */
 953
 954         /** \name DMA queues (contexts) */
 955         /*@{ */
 956         int queue_count;                /**< Number of active DMA queues */
 957         int queue_reserved;               /**< Number of reserved DMA queues */
 958         int queue_slots;                /**< Actual length of queuelist */
 959         struct drm_queue **queuelist;   /**< Vector of pointers to DMA queues */
 960         struct drm_device_dma *dma;             /**< Optional pointer for DMA support */
 961         /*@} */
 962
 963         /** \name Context support */
 964         /*@{ */
 965         int irq_enabled;                /**< True if irq handler is enabled */
 966         __volatile__ long context_flag; /**< Context swapping flag */
 967         __volatile__ long interrupt_flag; /**< Interruption handler flag */
 968         __volatile__ long dma_flag;     /**< DMA dispatch flag */
 969         struct timer_list timer;        /**< Timer for delaying ctx switch */
 970         wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */
 971         int last_checked;               /**< Last context checked for DMA */
 972         int last_context;               /**< Last current context */
 973         unsigned long last_switch;      /**< jiffies at last context switch */
 974         /*@} */
 975
 976         struct work_struct work;
 977         /** \name VBLANK IRQ support */
 978         /*@{ */
 979
 980         /*
 981          * At load time, disabling the vblank interrupt won't be allowed since
 982          * old clients may not call the modeset ioctl and therefore misbehave.
 983          * Once the modeset ioctl *has* been called though, we can safely
 984          * disable them when unused.
 985          */
 986         int vblank_disable_allowed;
 987
 988         wait_queue_head_t *vbl_queue;   /**< VBLANK wait queue */
 989         atomic_t *_vblank_count;        /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
 990         spinlock_t vbl_lock;
 991         atomic_t *vblank_refcount;      /* number of users of vblank interruptsper crtc */
 992         u32 *last_vblank;               /* protected by dev->vbl_lock, used */
 993                                         /* for wraparound handling */
 994         int *vblank_enabled;            /* so we don't call enable more than
 995                                            once per disable */
 996         int *vblank_inmodeset;          /* Display driver is setting mode */
 997         u32 *last_vblank_wait;          /* Last vblank seqno waited per CRTC */
 998         struct timer_list vblank_disable_timer;
 999
1000         u32 max_vblank_count;           /**< size of vblank counter register */
1001
1002         /*@} */
1003         cycles_t ctx_start;
1004         cycles_t lck_start;
1005
1006         struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */
1007         wait_queue_head_t buf_readers;  /**< Processes waiting to read */
1008         wait_queue_head_t buf_writers;  /**< Processes waiting to ctx switch */
1009
1010         struct drm_agp_head *agp;       /**< AGP data */
1011
1012         struct pci_dev *pdev;           /**< PCI device structure */
1013         int pci_vendor;                 /**< PCI vendor id */
1014         int pci_device;                 /**< PCI device id */
1015 #ifdef __alpha__
1016         struct pci_controller *hose;
1017 #endif
1018         struct drm_sg_mem *sg;  /**< Scatter gather memory */
1019         int num_crtcs;                  /**< Number of CRTCs on this device */
1020         void *dev_private;              /**< device private data */
1021         void *mm_private;
1022         struct address_space *dev_mapping;
1023         struct drm_sigdata sigdata;        /**< For block_all_signals */
1024         sigset_t sigmask;
1025
1026         struct drm_driver *driver;
1027         struct drm_local_map *agp_buffer_map;
1028         unsigned int agp_buffer_token;
1029         struct drm_minor *control;              /**< Control node for card */
1030         struct drm_minor *primary;              /**< render type primary screen head */
1031
1032         /** \name Drawable information */
1033         /*@{ */
1034         spinlock_t drw_lock;
1035         struct idr drw_idr;
1036         /*@} */
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         atomic_t object_count;
1045         atomic_t object_memory;
1046         atomic_t pin_count;
1047         atomic_t pin_memory;
1048         atomic_t gtt_count;
1049         atomic_t gtt_memory;
1050         uint32_t gtt_total;
1051         uint32_t invalidate_domains;    /* domains pending invalidation */
1052         uint32_t flush_domains;         /* domains pending flush */
1053         /*@} */
1054
1055 };
1056
1057 static inline int drm_dev_to_irq(struct drm_device *dev)
1058 {
1059         return dev->pdev->irq;
1060 }
1061
1062 static __inline__ int drm_core_check_feature(struct drm_device *dev,
1063                                              int feature)
1064 {
1065         return ((dev->driver->driver_features & feature) ? 1 : 0);
1066 }
1067
1068 #ifdef __alpha__
1069 #define drm_get_pci_domain(dev) dev->hose->index
1070 #else
1071 #define drm_get_pci_domain(dev) 0
1072 #endif
1073
1074 #if __OS_HAS_AGP
1075 static inline int drm_core_has_AGP(struct drm_device *dev)
1076 {
1077         return drm_core_check_feature(dev, DRIVER_USE_AGP);
1078 }
1079 #else
1080 #define drm_core_has_AGP(dev) (0)
1081 #endif
1082
1083 #if __OS_HAS_MTRR
1084 static inline int drm_core_has_MTRR(struct drm_device *dev)
1085 {
1086         return drm_core_check_feature(dev, DRIVER_USE_MTRR);
1087 }
1088
1089 #define DRM_MTRR_WC             MTRR_TYPE_WRCOMB
1090
1091 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1092                                unsigned int flags)
1093 {
1094         return mtrr_add(offset, size, flags, 1);
1095 }
1096
1097 static inline int drm_mtrr_del(int handle, unsigned long offset,
1098                                unsigned long size, unsigned int flags)
1099 {
1100         return mtrr_del(handle, offset, size);
1101 }
1102
1103 #else
1104 #define drm_core_has_MTRR(dev) (0)
1105
1106 #define DRM_MTRR_WC             0
1107
1108 static inline int drm_mtrr_add(unsigned long offset, unsigned long size,
1109                                unsigned int flags)
1110 {
1111         return 0;
1112 }
1113
1114 static inline int drm_mtrr_del(int handle, unsigned long offset,
1115                                unsigned long size, unsigned int flags)
1116 {
1117         return 0;
1118 }
1119 #endif
1120
1121 /******************************************************************/
1122 /** \name Internal function definitions */
1123 /*@{*/
1124
1125                                 /* Driver support (drm_drv.h) */
1126 extern int drm_init(struct drm_driver *driver);
1127 extern void drm_exit(struct drm_driver *driver);
1128 extern int drm_ioctl(struct inode *inode, struct file *filp,
1129                      unsigned int cmd, unsigned long arg);
1130 extern long drm_compat_ioctl(struct file *filp,
1131                              unsigned int cmd, unsigned long arg);
1132 extern int drm_lastclose(struct drm_device *dev);
1133
1134                                 /* Device support (drm_fops.h) */
1135 extern int drm_open(struct inode *inode, struct file *filp);
1136 extern int drm_stub_open(struct inode *inode, struct file *filp);
1137 extern int drm_fasync(int fd, struct file *filp, int on);
1138 extern int drm_release(struct inode *inode, struct file *filp);
1139
1140                                 /* Mapping support (drm_vm.h) */
1141 extern int drm_mmap(struct file *filp, struct vm_area_struct *vma);
1142 extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma);
1143 extern void drm_vm_open_locked(struct vm_area_struct *vma);
1144 extern resource_size_t drm_core_get_map_ofs(struct drm_local_map * map);
1145 extern resource_size_t drm_core_get_reg_ofs(struct drm_device *dev);
1146 extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
1147
1148                                 /* Memory management support (drm_memory.h) */
1149 #include "drm_memory.h"
1150 extern void drm_mem_init(void);
1151 extern int drm_mem_info(char *buf, char **start, off_t offset,
1152                         int request, int *eof, void *data);
1153 extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area);
1154
1155 extern DRM_AGP_MEM *drm_alloc_agp(struct drm_device *dev, int pages, u32 type);
1156 extern int drm_free_agp(DRM_AGP_MEM * handle, int pages);
1157 extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start);
1158 extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev,
1159                                        struct page **pages,
1160                                        unsigned long num_pages,
1161                                        uint32_t gtt_offset,
1162                                        uint32_t type);
1163 extern int drm_unbind_agp(DRM_AGP_MEM * handle);
1164
1165                                 /* Misc. IOCTL support (drm_ioctl.h) */
1166 extern int drm_irq_by_busid(struct drm_device *dev, void *data,
1167                             struct drm_file *file_priv);
1168 extern int drm_getunique(struct drm_device *dev, void *data,
1169                          struct drm_file *file_priv);
1170 extern int drm_setunique(struct drm_device *dev, void *data,
1171                          struct drm_file *file_priv);
1172 extern int drm_getmap(struct drm_device *dev, void *data,
1173                       struct drm_file *file_priv);
1174 extern int drm_getclient(struct drm_device *dev, void *data,
1175                          struct drm_file *file_priv);
1176 extern int drm_getstats(struct drm_device *dev, void *data,
1177                         struct drm_file *file_priv);
1178 extern int drm_setversion(struct drm_device *dev, void *data,
1179                           struct drm_file *file_priv);
1180 extern int drm_noop(struct drm_device *dev, void *data,
1181                     struct drm_file *file_priv);
1182
1183                                 /* Context IOCTL support (drm_context.h) */
1184 extern int drm_resctx(struct drm_device *dev, void *data,
1185                       struct drm_file *file_priv);
1186 extern int drm_addctx(struct drm_device *dev, void *data,
1187                       struct drm_file *file_priv);
1188 extern int drm_modctx(struct drm_device *dev, void *data,
1189                       struct drm_file *file_priv);
1190 extern int drm_getctx(struct drm_device *dev, void *data,
1191                       struct drm_file *file_priv);
1192 extern int drm_switchctx(struct drm_device *dev, void *data,
1193                          struct drm_file *file_priv);
1194 extern int drm_newctx(struct drm_device *dev, void *data,
1195                       struct drm_file *file_priv);
1196 extern int drm_rmctx(struct drm_device *dev, void *data,
1197                      struct drm_file *file_priv);
1198
1199 extern int drm_ctxbitmap_init(struct drm_device *dev);
1200 extern void drm_ctxbitmap_cleanup(struct drm_device *dev);
1201 extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
1202
1203 extern int drm_setsareactx(struct drm_device *dev, void *data,
1204                            struct drm_file *file_priv);
1205 extern int drm_getsareactx(struct drm_device *dev, void *data,
1206                            struct drm_file *file_priv);
1207
1208                                 /* Drawable IOCTL support (drm_drawable.h) */
1209 extern int drm_adddraw(struct drm_device *dev, void *data,
1210                        struct drm_file *file_priv);
1211 extern int drm_rmdraw(struct drm_device *dev, void *data,
1212                       struct drm_file *file_priv);
1213 extern int drm_update_drawable_info(struct drm_device *dev, void *data,
1214                                     struct drm_file *file_priv);
1215 extern struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev,
1216                                                   drm_drawable_t id);
1217 extern void drm_drawable_free_all(struct drm_device *dev);
1218
1219                                 /* Authentication IOCTL support (drm_auth.h) */
1220 extern int drm_getmagic(struct drm_device *dev, void *data,
1221                         struct drm_file *file_priv);
1222 extern int drm_authmagic(struct drm_device *dev, void *data,
1223                          struct drm_file *file_priv);
1224
1225 /* Cache management (drm_cache.c) */
1226 void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
1227
1228                                 /* Locking IOCTL support (drm_lock.h) */
1229 extern int drm_lock(struct drm_device *dev, void *data,
1230                     struct drm_file *file_priv);
1231 extern int drm_unlock(struct drm_device *dev, void *data,
1232                       struct drm_file *file_priv);
1233 extern int drm_lock_take(struct drm_lock_data *lock_data, unsigned int context);
1234 extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context);
1235 extern void drm_idlelock_take(struct drm_lock_data *lock_data);
1236 extern void drm_idlelock_release(struct drm_lock_data *lock_data);
1237
1238 /*
1239  * These are exported to drivers so that they can implement fencing using
1240  * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1241  */
1242
1243 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv);
1244
1245                                 /* Buffer management support (drm_bufs.h) */
1246 extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request);
1247 extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request);
1248 extern int drm_addmap(struct drm_device *dev, resource_size_t offset,
1249                       unsigned int size, enum drm_map_type type,
1250                       enum drm_map_flags flags, struct drm_local_map **map_ptr);
1251 extern int drm_addmap_ioctl(struct drm_device *dev, void *data,
1252                             struct drm_file *file_priv);
1253 extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map);
1254 extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map);
1255 extern int drm_rmmap_ioctl(struct drm_device *dev, void *data,
1256                            struct drm_file *file_priv);
1257 extern int drm_addbufs(struct drm_device *dev, void *data,
1258                        struct drm_file *file_priv);
1259 extern int drm_infobufs(struct drm_device *dev, void *data,
1260                         struct drm_file *file_priv);
1261 extern int drm_markbufs(struct drm_device *dev, void *data,
1262                         struct drm_file *file_priv);
1263 extern int drm_freebufs(struct drm_device *dev, void *data,
1264                         struct drm_file *file_priv);
1265 extern int drm_mapbufs(struct drm_device *dev, void *data,
1266                        struct drm_file *file_priv);
1267 extern int drm_order(unsigned long size);
1268 extern resource_size_t drm_get_resource_start(struct drm_device *dev,
1269                                               unsigned int resource);
1270 extern resource_size_t drm_get_resource_len(struct drm_device *dev,
1271                                             unsigned int resource);
1272
1273                                 /* DMA support (drm_dma.h) */
1274 extern int drm_dma_setup(struct drm_device *dev);
1275 extern void drm_dma_takedown(struct drm_device *dev);
1276 extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf);
1277 extern void drm_core_reclaim_buffers(struct drm_device *dev,
1278                                      struct drm_file *filp);
1279
1280                                 /* IRQ support (drm_irq.h) */
1281 extern int drm_control(struct drm_device *dev, void *data,
1282                        struct drm_file *file_priv);
1283 extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
1284 extern int drm_irq_install(struct drm_device *dev);
1285 extern int drm_irq_uninstall(struct drm_device *dev);
1286 extern void drm_driver_irq_preinstall(struct drm_device *dev);
1287 extern void drm_driver_irq_postinstall(struct drm_device *dev);
1288 extern void drm_driver_irq_uninstall(struct drm_device *dev);
1289
1290 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
1291 extern int drm_wait_vblank(struct drm_device *dev, void *data,
1292                            struct drm_file *filp);
1293 extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
1294 extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
1295 extern void drm_handle_vblank(struct drm_device *dev, int crtc);
1296 extern int drm_vblank_get(struct drm_device *dev, int crtc);
1297 extern void drm_vblank_put(struct drm_device *dev, int crtc);
1298 extern void drm_vblank_cleanup(struct drm_device *dev);
1299 /* Modesetting support */
1300 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
1301 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
1302 extern int drm_modeset_ctl(struct drm_device *dev, void *data,
1303                            struct drm_file *file_priv);
1304
1305                                 /* AGP/GART support (drm_agpsupport.h) */
1306 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
1307 extern int drm_agp_acquire(struct drm_device *dev);
1308 extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
1309                                  struct drm_file *file_priv);
1310 extern int drm_agp_release(struct drm_device *dev);
1311 extern int drm_agp_release_ioctl(struct drm_device *dev, void *data,
1312                                  struct drm_file *file_priv);
1313 extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
1314 extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
1315                                 struct drm_file *file_priv);
1316 extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
1317 extern int drm_agp_info_ioctl(struct drm_device *dev, void *data,
1318                         struct drm_file *file_priv);
1319 extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
1320 extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
1321                          struct drm_file *file_priv);
1322 extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
1323 extern int drm_agp_free_ioctl(struct drm_device *dev, void *data,
1324                         struct drm_file *file_priv);
1325 extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
1326 extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
1327                           struct drm_file *file_priv);
1328 extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
1329 extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
1330                         struct drm_file *file_priv);
1331 extern DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge, size_t pages, u32 type);
1332 extern int drm_agp_free_memory(DRM_AGP_MEM * handle);
1333 extern int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start);
1334 extern int drm_agp_unbind_memory(DRM_AGP_MEM * handle);
1335 extern void drm_agp_chipset_flush(struct drm_device *dev);
1336
1337                                 /* Stub support (drm_stub.h) */
1338 extern int drm_setmaster_ioctl(struct drm_device *dev, void *data,
1339                                struct drm_file *file_priv);
1340 extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
1341                                 struct drm_file *file_priv);
1342 struct drm_master *drm_master_create(struct drm_minor *minor);
1343 extern struct drm_master *drm_master_get(struct drm_master *master);
1344 extern void drm_master_put(struct drm_master **master);
1345 extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
1346                        struct drm_driver *driver);
1347 extern void drm_put_dev(struct drm_device *dev);
1348 extern int drm_put_minor(struct drm_minor **minor);
1349 extern unsigned int drm_debug;
1350
1351 extern struct class *drm_class;
1352 extern struct proc_dir_entry *drm_proc_root;
1353 extern struct dentry *drm_debugfs_root;
1354
1355 extern struct idr drm_minors_idr;
1356
1357 extern struct drm_local_map *drm_getsarea(struct drm_device *dev);
1358
1359                                 /* Proc support (drm_proc.h) */
1360 extern int drm_proc_init(struct drm_minor *minor, int minor_id,
1361                          struct proc_dir_entry *root);
1362 extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root);
1363
1364                                 /* Debugfs support */
1365 #if defined(CONFIG_DEBUG_FS)
1366 extern int drm_debugfs_init(struct drm_minor *minor, int minor_id,
1367                             struct dentry *root);
1368 extern int drm_debugfs_create_files(struct drm_info_list *files, int count,
1369                                     struct dentry *root, struct drm_minor *minor);
1370 extern int drm_debugfs_remove_files(struct drm_info_list *files, int count,
1371                                     struct drm_minor *minor);
1372 extern int drm_debugfs_cleanup(struct drm_minor *minor);
1373 #endif
1374
1375                                 /* Info file support */
1376 extern int drm_name_info(struct seq_file *m, void *data);
1377 extern int drm_vm_info(struct seq_file *m, void *data);
1378 extern int drm_queues_info(struct seq_file *m, void *data);
1379 extern int drm_bufs_info(struct seq_file *m, void *data);
1380 extern int drm_vblank_info(struct seq_file *m, void *data);
1381 extern int drm_clients_info(struct seq_file *m, void* data);
1382 extern int drm_gem_name_info(struct seq_file *m, void *data);
1383 extern int drm_gem_object_info(struct seq_file *m, void* data);
1384
1385 #if DRM_DEBUG_CODE
1386 extern int drm_vma_info(struct seq_file *m, void *data);
1387 #endif
1388
1389                                 /* Scatter Gather Support (drm_scatter.h) */
1390 extern void drm_sg_cleanup(struct drm_sg_mem * entry);
1391 extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
1392                         struct drm_file *file_priv);
1393 extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
1394 extern int drm_sg_free(struct drm_device *dev, void *data,
1395                        struct drm_file *file_priv);
1396
1397                                /* ATI PCIGART support (ati_pcigart.h) */
1398 extern int drm_ati_pcigart_init(struct drm_device *dev,
1399                                 struct drm_ati_pcigart_info * gart_info);
1400 extern int drm_ati_pcigart_cleanup(struct drm_device *dev,
1401                                    struct drm_ati_pcigart_info * gart_info);
1402
1403 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
1404                                        size_t align, dma_addr_t maxaddr);
1405 extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1406 extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
1407
1408                                /* sysfs support (drm_sysfs.c) */
1409 struct drm_sysfs_class;
1410 extern struct class *drm_sysfs_create(struct module *owner, char *name);
1411 extern void drm_sysfs_destroy(void);
1412 extern int drm_sysfs_device_add(struct drm_minor *minor);
1413 extern void drm_sysfs_hotplug_event(struct drm_device *dev);
1414 extern void drm_sysfs_device_remove(struct drm_minor *minor);
1415 extern char *drm_get_connector_status_name(enum drm_connector_status status);
1416 extern int drm_sysfs_connector_add(struct drm_connector *connector);
1417 extern void drm_sysfs_connector_remove(struct drm_connector *connector);
1418
1419 /* Graphics Execution Manager library functions (drm_gem.c) */
1420 int drm_gem_init(struct drm_device *dev);
1421 void drm_gem_destroy(struct drm_device *dev);
1422 void drm_gem_object_free(struct kref *kref);
1423 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1424                                             size_t size);
1425 void drm_gem_object_handle_free(struct kref *kref);
1426 void drm_gem_vm_open(struct vm_area_struct *vma);
1427 void drm_gem_vm_close(struct vm_area_struct *vma);
1428 int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
1429
1430 static inline void
1431 drm_gem_object_reference(struct drm_gem_object *obj)
1432 {
1433         kref_get(&obj->refcount);
1434 }
1435
1436 static inline void
1437 drm_gem_object_unreference(struct drm_gem_object *obj)
1438 {
1439         if (obj == NULL)
1440                 return;
1441
1442         kref_put(&obj->refcount, drm_gem_object_free);
1443 }
1444
1445 int drm_gem_handle_create(struct drm_file *file_priv,
1446                           struct drm_gem_object *obj,
1447                           u32 *handlep);
1448
1449 static inline void
1450 drm_gem_object_handle_reference(struct drm_gem_object *obj)
1451 {
1452         drm_gem_object_reference(obj);
1453         kref_get(&obj->handlecount);
1454 }
1455
1456 static inline void
1457 drm_gem_object_handle_unreference(struct drm_gem_object *obj)
1458 {
1459         if (obj == NULL)
1460                 return;
1461
1462         /*
1463          * Must bump handle count first as this may be the last
1464          * ref, in which case the object would disappear before we
1465          * checked for a name
1466          */
1467         kref_put(&obj->handlecount, drm_gem_object_handle_free);
1468         drm_gem_object_unreference(obj);
1469 }
1470
1471 struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev,
1472                                              struct drm_file *filp,
1473                                              u32 handle);
1474 int drm_gem_close_ioctl(struct drm_device *dev, void *data,
1475                         struct drm_file *file_priv);
1476 int drm_gem_flink_ioctl(struct drm_device *dev, void *data,
1477                         struct drm_file *file_priv);
1478 int drm_gem_open_ioctl(struct drm_device *dev, void *data,
1479                        struct drm_file *file_priv);
1480 void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
1481 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1482
1483 extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev);
1484 extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
1485 extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
1486
1487 static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev,
1488                                                          unsigned int token)
1489 {
1490         struct drm_map_list *_entry;
1491         list_for_each_entry(_entry, &dev->maplist, head)
1492             if (_entry->user_token == token)
1493                 return _entry->map;
1494         return NULL;
1495 }
1496
1497 static __inline__ int drm_device_is_agp(struct drm_device *dev)
1498 {
1499         if (dev->driver->device_is_agp != NULL) {
1500                 int err = (*dev->driver->device_is_agp) (dev);
1501
1502                 if (err != 2) {
1503                         return err;
1504                 }
1505         }
1506
1507         return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
1508 }
1509
1510 static __inline__ int drm_device_is_pcie(struct drm_device *dev)
1511 {
1512         return pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
1513 }
1514
1515 static __inline__ void drm_core_dropmap(struct drm_local_map *map)
1516 {
1517 }
1518
1519
1520 static __inline__ void *drm_calloc_large(size_t nmemb, size_t size)
1521 {
1522         if (size * nmemb <= PAGE_SIZE)
1523             return kcalloc(nmemb, size, GFP_KERNEL);
1524
1525         if (size != 0 && nmemb > ULONG_MAX / size)
1526                 return NULL;
1527
1528         return __vmalloc(size * nmemb,
1529                          GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL);
1530 }
1531
1532 static __inline void drm_free_large(void *ptr)
1533 {
1534         if (!is_vmalloc_addr(ptr))
1535                 return kfree(ptr);
1536
1537         vfree(ptr);
1538 }
1539 /*@}*/
1540
1541 #endif                          /* __KERNEL__ */
1542 #endif