drivers/char/drm/drmP.h

   1 /* drmP.h -- Private header for Direct Rendering Manager -*- linux-c -*-
   2  * Created: Mon Jan  4 10:05:05 1999 by faith@precisioninsight.com
   3  *
   4  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   5  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   6  * All rights reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  25  * OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  * Authors:
  28  *    Rickard E. (Rik) Faith <faith@valinux.com>
  29  *    Gareth Hughes <gareth@valinux.com>
  30  */
  31
  32 #ifndef _DRM_P_H_
  33 #define _DRM_P_H_
  34
  35 #ifdef __KERNEL__
  36 #ifdef __alpha__
  37 /* add include of current.h so that "current" is defined
  38  * before static inline funcs in wait.h. Doing this so we
  39  * can build the DRM (part of PI DRI). 4/21/2000 S + B */
  40 #include <asm/current.h>
  41 #endif /* __alpha__ */
  42 #include <linux/config.h>
  43 #include <linux/module.h>
  44 #include <linux/kernel.h>
  45 #include <linux/miscdevice.h>
  46 #include <linux/fs.h>
  47 #include <linux/proc_fs.h>
  48 #include <linux/init.h>
  49 #include <linux/file.h>
  50 #include <linux/pci.h>
  51 #include <linux/version.h>
  52 #include <linux/jiffies.h>
  53 #include <linux/smp_lock.h>     /* For (un)lock_kernel */
  54 #include <linux/mm.h>
  55 #if defined(__alpha__) || defined(__powerpc__)
  56 #include <asm/pgtable.h> /* For pte_wrprotect */
  57 #endif
  58 #include <asm/io.h>
  59 #include <asm/mman.h>
  60 #include <asm/uaccess.h>
  61 #ifdef CONFIG_MTRR
  62 #include <asm/mtrr.h>
  63 #endif
  64 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
  65 #include <linux/types.h>
  66 #include <linux/agp_backend.h>
  67 #endif
  68 #include <linux/workqueue.h>
  69 #include <linux/poll.h>
  70 #include <asm/pgalloc.h>
  71 #include "drm.h"
  72
  73 #include "drm_os_linux.h"
  74
  75 /* DRM template customization defaults
  76  */
  77 #ifndef __HAVE_AGP
  78 #define __HAVE_AGP              0
  79 #endif
  80 #ifndef __HAVE_MTRR
  81 #define __HAVE_MTRR             0
  82 #endif
  83 #ifndef __HAVE_CTX_BITMAP
  84 #define __HAVE_CTX_BITMAP       0
  85 #endif
  86 #ifndef __HAVE_DMA
  87 #define __HAVE_DMA              0
  88 #endif
  89 #ifndef __HAVE_DMA_IRQ
  90 #define __HAVE_DMA_IRQ          0
  91 #endif
  92 #ifndef __HAVE_DMA_WAITLIST
  93 #define __HAVE_DMA_WAITLIST     0
  94 #endif
  95 #ifndef __HAVE_DMA_FREELIST
  96 #define __HAVE_DMA_FREELIST     0
  97 #endif
  98
  99 #define __REALLY_HAVE_AGP       (__HAVE_AGP && (defined(CONFIG_AGP) || \
 100                                                 defined(CONFIG_AGP_MODULE)))
 101 #define __REALLY_HAVE_MTRR      (__HAVE_MTRR && defined(CONFIG_MTRR))
 102 #define __REALLY_HAVE_SG        (__HAVE_SG)
 103
 104 /* Begin the DRM...
 105  */
 106
 107 #define DRM_DEBUG_CODE 2          /* Include debugging code (if > 1, then
 108                                      also include looping detection. */
 109
 110 #define DRM_HASH_SIZE         16 /* Size of key hash table                */
 111 #define DRM_KERNEL_CONTEXT    0  /* Change drm_resctx if changed          */
 112 #define DRM_RESERVED_CONTEXTS 1  /* Change drm_resctx if changed          */
 113 #define DRM_LOOPING_LIMIT     5000000
 114 #define DRM_BSZ               1024 /* Buffer size for /dev/drm? output    */
 115 #define DRM_TIME_SLICE        (HZ/20)  /* Time slice for GLXContexts      */
 116 #define DRM_LOCK_SLICE        1 /* Time slice for lock, in jiffies        */
 117
 118 #define DRM_FLAG_DEBUG    0x01
 119
 120 #define DRM_MEM_DMA        0
 121 #define DRM_MEM_SAREA      1
 122 #define DRM_MEM_DRIVER     2
 123 #define DRM_MEM_MAGIC      3
 124 #define DRM_MEM_IOCTLS     4
 125 #define DRM_MEM_MAPS       5
 126 #define DRM_MEM_VMAS       6
 127 #define DRM_MEM_BUFS       7
 128 #define DRM_MEM_SEGS       8
 129 #define DRM_MEM_PAGES      9
 130 #define DRM_MEM_FILES     10
 131 #define DRM_MEM_QUEUES    11
 132 #define DRM_MEM_CMDS      12
 133 #define DRM_MEM_MAPPINGS  13
 134 #define DRM_MEM_BUFLISTS  14
 135 #define DRM_MEM_AGPLISTS  15
 136 #define DRM_MEM_TOTALAGP  16
 137 #define DRM_MEM_BOUNDAGP  17
 138 #define DRM_MEM_CTXBITMAP 18
 139 #define DRM_MEM_STUB      19
 140 #define DRM_MEM_SGLISTS   20
 141
 142 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
 143
 144                                 /* Backward compatibility section */
 145 #ifndef minor
 146 #define minor(x) MINOR((x))
 147 #endif
 148
 149 #ifndef MODULE_LICENSE
 150 #define MODULE_LICENSE(x)
 151 #endif
 152
 153 #ifndef preempt_disable
 154 #define preempt_disable()
 155 #define preempt_enable()
 156 #endif
 157
 158 #ifndef pte_offset_map
 159 #define pte_offset_map pte_offset
 160 #define pte_unmap(pte)
 161 #endif
 162
 163 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,19)
 164 static inline struct page * vmalloc_to_page(void * vmalloc_addr)
 165 {
 166         unsigned long addr = (unsigned long) vmalloc_addr;
 167         struct page *page = NULL;
 168         pgd_t *pgd = pgd_offset_k(addr);
 169         pmd_t *pmd;
 170         pte_t *ptep, pte;
 171
 172         if (!pgd_none(*pgd)) {
 173                 pmd = pmd_offset(pgd, addr);
 174                 if (!pmd_none(*pmd)) {
 175                         preempt_disable();
 176                         ptep = pte_offset_map(pmd, addr);
 177                         pte = *ptep;
 178                         if (pte_present(pte))
 179                                 page = pte_page(pte);
 180                         pte_unmap(ptep);
 181                         preempt_enable();
 182                 }
 183         }
 184         return page;
 185 }
 186 #endif
 187
 188 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 189 #define DRM_RPR_ARG(vma)
 190 #else
 191 #define DRM_RPR_ARG(vma) vma,
 192 #endif
 193
 194
 195 #define VM_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT)
 196
 197                                 /* Macros to make printk easier */
 198 #define DRM_ERROR(fmt, arg...) \
 199         printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* " fmt , __FUNCTION__ , ##arg)
 200 #define DRM_MEM_ERROR(area, fmt, arg...) \
 201         printk(KERN_ERR "[" DRM_NAME ":%s:%s] *ERROR* " fmt , __FUNCTION__, \
 202                DRM(mem_stats)[area].name , ##arg)
 203 #define DRM_INFO(fmt, arg...)  printk(KERN_INFO "[" DRM_NAME "] " fmt , ##arg)
 204
 205 #if DRM_DEBUG_CODE
 206 #define DRM_DEBUG(fmt, arg...)                                          \
 207         do {                                                            \
 208                 if ( DRM(flags) & DRM_FLAG_DEBUG )                      \
 209                         printk(KERN_DEBUG                               \
 210                                "[" DRM_NAME ":%s] " fmt ,       \
 211                                __FUNCTION__ , ##arg);                   \
 212         } while (0)
 213 #else
 214 #define DRM_DEBUG(fmt, arg...)           do { } while (0)
 215 #endif
 216
 217 #define DRM_PROC_LIMIT (PAGE_SIZE-80)
 218
 219 #define DRM_PROC_PRINT(fmt, arg...)                                     \
 220    len += sprintf(&buf[len], fmt , ##arg);                              \
 221    if (len > DRM_PROC_LIMIT) { *eof = 1; return len - offset; }
 222
 223 #define DRM_PROC_PRINT_RET(ret, fmt, arg...)                            \
 224    len += sprintf(&buf[len], fmt , ##arg);                              \
 225    if (len > DRM_PROC_LIMIT) { ret; *eof = 1; return len - offset; }
 226
 227                                 /* Mapping helper macros */
 228 #define DRM_IOREMAP(map)                                                \
 229         (map)->handle = DRM(ioremap)( (map)->offset, (map)->size )
 230
 231 #define DRM_IOREMAP_NOCACHE(map)                                        \
 232         (map)->handle = DRM(ioremap_nocache)((map)->offset, (map)->size)
 233
 234 #define DRM_IOREMAPFREE(map)                                            \
 235         do {                                                            \
 236                 if ( (map)->handle && (map)->size )                     \
 237                         DRM(ioremapfree)( (map)->handle, (map)->size ); \
 238         } while (0)
 239
 240 #define DRM_FIND_MAP(_map, _o)                                                          \
 241 do {                                                                                    \
 242         struct list_head *_list;                                                        \
 243         list_for_each( _list, &dev->maplist->head ) {                                   \
 244                 drm_map_list_t *_entry = list_entry( _list, drm_map_list_t, head );     \
 245                 if ( _entry->map &&                                                     \
 246                      _entry->map->offset == (_o) ) {                                    \
 247                         (_map) = _entry->map;                                           \
 248                         break;                                                          \
 249                 }                                                                       \
 250         }                                                                               \
 251 } while(0)
 252 #define DRM_DROP_MAP(_map)
 253
 254                                 /* Internal types and structures */
 255 #define DRM_ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
 256 #define DRM_MIN(a,b) ((a)<(b)?(a):(b))
 257 #define DRM_MAX(a,b) ((a)>(b)?(a):(b))
 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 #define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
 262
 263 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do {       \
 264         (_map) = (_dev)->context_sareas[_ctx];          \
 265 } while(0)
 266
 267 #define LOCK_TEST_WITH_RETURN( dev, filp )                              \
 268 do {                                                                    \
 269         if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||           \
 270              dev->lock.filp != filp ) {                         \
 271                 DRM_ERROR( "%s called without lock held\n",             \
 272                            __FUNCTION__ );                              \
 273                 return -EINVAL;                                         \
 274         }                                                               \
 275 } while (0)
 276
 277
 278 typedef int drm_ioctl_t( struct inode *inode, struct file *filp,
 279                          unsigned int cmd, unsigned long arg );
 280
 281 typedef struct drm_pci_list {
 282         u16 vendor;
 283         u16 device;
 284 } drm_pci_list_t;
 285
 286 typedef struct drm_ioctl_desc {
 287         drm_ioctl_t          *func;
 288         int                  auth_needed;
 289         int                  root_only;
 290 } drm_ioctl_desc_t;
 291
 292 typedef struct drm_devstate {
 293         pid_t             owner;        /* X server pid holding x_lock */
 294
 295 } drm_devstate_t;
 296
 297 typedef struct drm_magic_entry {
 298         drm_magic_t            magic;
 299         struct drm_file        *priv;
 300         struct drm_magic_entry *next;
 301 } drm_magic_entry_t;
 302
 303 typedef struct drm_magic_head {
 304         struct drm_magic_entry *head;
 305         struct drm_magic_entry *tail;
 306 } drm_magic_head_t;
 307
 308 typedef struct drm_vma_entry {
 309         struct vm_area_struct *vma;
 310         struct drm_vma_entry  *next;
 311         pid_t                 pid;
 312 } drm_vma_entry_t;
 313
 314 typedef struct drm_buf {
 315         int               idx;         /* Index into master buflist          */
 316         int               total;       /* Buffer size                        */
 317         int               order;       /* log-base-2(total)                  */
 318         int               used;        /* Amount of buffer in use (for DMA)  */
 319         unsigned long     offset;      /* Byte offset (used internally)      */
 320         void              *address;    /* Address of buffer                  */
 321         unsigned long     bus_address; /* Bus address of buffer              */
 322         struct drm_buf    *next;       /* Kernel-only: used for free list    */
 323         __volatile__ int  waiting;     /* On kernel DMA queue                */
 324         __volatile__ int  pending;     /* On hardware DMA queue              */
 325         wait_queue_head_t dma_wait;    /* Processes waiting                  */
 326         struct file       *filp;       /* Pointer to holding file descr      */
 327         int               context;     /* Kernel queue for this buffer       */
 328         int               while_locked;/* Dispatch this buffer while locked  */
 329         enum {
 330                 DRM_LIST_NONE    = 0,
 331                 DRM_LIST_FREE    = 1,
 332                 DRM_LIST_WAIT    = 2,
 333                 DRM_LIST_PEND    = 3,
 334                 DRM_LIST_PRIO    = 4,
 335                 DRM_LIST_RECLAIM = 5
 336         }                 list;        /* Which list we're on                */
 337
 338
 339         int               dev_priv_size; /* Size of buffer private stoarge   */
 340         void              *dev_private;  /* Per-buffer private storage       */
 341 } drm_buf_t;
 342
 343
 344                                 /* bufs is one longer than it has to be */
 345 typedef struct drm_waitlist {
 346         int               count;        /* Number of possible buffers      */
 347         drm_buf_t         **bufs;       /* List of pointers to buffers     */
 348         drm_buf_t         **rp;         /* Read pointer                    */
 349         drm_buf_t         **wp;         /* Write pointer                   */
 350         drm_buf_t         **end;        /* End pointer                     */
 351         spinlock_t        read_lock;
 352         spinlock_t        write_lock;
 353 } drm_waitlist_t;
 354
 355 typedef struct drm_freelist {
 356         int               initialized; /* Freelist in use                  */
 357         atomic_t          count;       /* Number of free buffers           */
 358         drm_buf_t         *next;       /* End pointer                      */
 359
 360         wait_queue_head_t waiting;     /* Processes waiting on free bufs   */
 361         int               low_mark;    /* Low water mark                   */
 362         int               high_mark;   /* High water mark                  */
 363         atomic_t          wfh;         /* If waiting for high mark         */
 364         spinlock_t        lock;
 365 } drm_freelist_t;
 366
 367 typedef struct drm_buf_entry {
 368         int               buf_size;
 369         int               buf_count;
 370         drm_buf_t         *buflist;
 371         int               seg_count;
 372         int               page_order;
 373         unsigned long     *seglist;
 374
 375         drm_freelist_t    freelist;
 376 } drm_buf_entry_t;
 377
 378 typedef struct drm_hw_lock {
 379         __volatile__ unsigned int lock;
 380         char                      padding[60]; /* Pad to cache line */
 381 } drm_hw_lock_t;
 382
 383 typedef struct drm_file {
 384         int               authenticated;
 385         int               minor;
 386         pid_t             pid;
 387         uid_t             uid;
 388         drm_magic_t       magic;
 389         unsigned long     ioctl_count;
 390         struct drm_file   *next;
 391         struct drm_file   *prev;
 392         struct drm_device *dev;
 393         int               remove_auth_on_close;
 394         unsigned long     lock_count;
 395 } drm_file_t;
 396
 397
 398 typedef struct drm_queue {
 399         atomic_t          use_count;    /* Outstanding uses (+1)            */
 400         atomic_t          finalization; /* Finalization in progress         */
 401         atomic_t          block_count;  /* Count of processes waiting       */
 402         atomic_t          block_read;   /* Queue blocked for reads          */
 403         wait_queue_head_t read_queue;   /* Processes waiting on block_read  */
 404         atomic_t          block_write;  /* Queue blocked for writes         */
 405         wait_queue_head_t write_queue;  /* Processes waiting on block_write */
 406 #if 1
 407         atomic_t          total_queued; /* Total queued statistic           */
 408         atomic_t          total_flushed;/* Total flushes statistic          */
 409         atomic_t          total_locks;  /* Total locks statistics           */
 410 #endif
 411         drm_ctx_flags_t   flags;        /* Context preserving and 2D-only   */
 412         drm_waitlist_t    waitlist;     /* Pending buffers                  */
 413         wait_queue_head_t flush_queue;  /* Processes waiting until flush    */
 414 } drm_queue_t;
 415
 416 typedef struct drm_lock_data {
 417         drm_hw_lock_t     *hw_lock;     /* Hardware lock                   */
 418         struct file       *filp;        /* File descr of lock holder (0=kernel)   */
 419         wait_queue_head_t lock_queue;   /* Queue of blocked processes      */
 420         unsigned long     lock_time;    /* Time of last lock in jiffies    */
 421 } drm_lock_data_t;
 422
 423 typedef struct drm_device_dma {
 424
 425         drm_buf_entry_t   bufs[DRM_MAX_ORDER+1];
 426         int               buf_count;
 427         drm_buf_t         **buflist;    /* Vector of pointers info bufs    */
 428         int               seg_count;
 429         int               page_count;
 430         unsigned long     *pagelist;
 431         unsigned long     byte_count;
 432         enum {
 433                 _DRM_DMA_USE_AGP = 0x01,
 434                 _DRM_DMA_USE_SG  = 0x02
 435         } flags;
 436
 437                                 /* DMA support */
 438         drm_buf_t         *this_buffer; /* Buffer being sent               */
 439         drm_buf_t         *next_buffer; /* Selected buffer to send         */
 440         drm_queue_t       *next_queue;  /* Queue from which buffer selected*/
 441         wait_queue_head_t waiting;      /* Processes waiting on free bufs  */
 442 } drm_device_dma_t;
 443
 444 #if __REALLY_HAVE_AGP
 445 typedef struct drm_agp_mem {
 446         unsigned long      handle;
 447         agp_memory         *memory;
 448         unsigned long      bound; /* address */
 449         int                pages;
 450         struct drm_agp_mem *prev;
 451         struct drm_agp_mem *next;
 452 } drm_agp_mem_t;
 453
 454 typedef struct drm_agp_head {
 455         agp_kern_info      agp_info;
 456         drm_agp_mem_t      *memory;
 457         unsigned long      mode;
 458         int                enabled;
 459         int                acquired;
 460         unsigned long      base;
 461         int                agp_mtrr;
 462         int                cant_use_aperture;
 463         unsigned long      page_mask;
 464 } drm_agp_head_t;
 465 #endif
 466
 467 typedef struct drm_sg_mem {
 468         unsigned long   handle;
 469         void            *virtual;
 470         int             pages;
 471         struct page     **pagelist;
 472         dma_addr_t      *busaddr;
 473 } drm_sg_mem_t;
 474
 475 typedef struct drm_sigdata {
 476         int           context;
 477         drm_hw_lock_t *lock;
 478 } drm_sigdata_t;
 479
 480 typedef struct drm_map_list {
 481         struct list_head        head;
 482         drm_map_t               *map;
 483 } drm_map_list_t;
 484
 485 typedef drm_map_t drm_local_map_t;
 486
 487 #if __HAVE_VBL_IRQ
 488
 489 typedef struct drm_vbl_sig {
 490         struct list_head        head;
 491         unsigned int            sequence;
 492         struct siginfo          info;
 493         struct task_struct      *task;
 494 } drm_vbl_sig_t;
 495
 496 #endif
 497
 498 typedef struct drm_device {
 499         const char        *name;        /* Simple driver name              */
 500         char              *unique;      /* Unique identifier: e.g., busid  */
 501         int               unique_len;   /* Length of unique field          */
 502         dev_t             device;       /* Device number for mknod         */
 503         char              *devname;     /* For /proc/interrupts            */
 504
 505         int               blocked;      /* Blocked due to VC switch?       */
 506         struct proc_dir_entry *root;    /* Root for this device's entries  */
 507
 508                                 /* Locks */
 509         spinlock_t        count_lock;   /* For inuse, open_count, buf_use  */
 510         struct semaphore  struct_sem;   /* For others                      */
 511
 512                                 /* Usage Counters */
 513         int               open_count;   /* Outstanding files open          */
 514         atomic_t          ioctl_count;  /* Outstanding IOCTLs pending      */
 515         atomic_t          vma_count;    /* Outstanding vma areas open      */
 516         int               buf_use;      /* Buffers in use -- cannot alloc  */
 517         atomic_t          buf_alloc;    /* Buffer allocation in progress   */
 518
 519                                 /* Performance counters */
 520         unsigned long     counters;
 521         drm_stat_type_t   types[15];
 522         atomic_t          counts[15];
 523
 524                                 /* Authentication */
 525         drm_file_t        *file_first;
 526         drm_file_t        *file_last;
 527         drm_magic_head_t  magiclist[DRM_HASH_SIZE];
 528
 529                                 /* Memory management */
 530         drm_map_list_t    *maplist;     /* Linked list of regions          */
 531
 532         drm_map_t         **context_sareas;
 533         int               max_context;
 534
 535         drm_vma_entry_t   *vmalist;     /* List of vmas (for debugging)    */
 536         drm_lock_data_t   lock;         /* Information on hardware lock    */
 537
 538                                 /* DMA queues (contexts) */
 539         int               queue_count;  /* Number of active DMA queues     */
 540         int               queue_reserved; /* Number of reserved DMA queues */
 541         int               queue_slots;  /* Actual length of queuelist      */
 542         drm_queue_t       **queuelist;  /* Vector of pointers to DMA queues */
 543         drm_device_dma_t  *dma;         /* Optional pointer for DMA support */
 544
 545                                 /* Context support */
 546         int               irq;          /* Interrupt used by board         */
 547         __volatile__ long context_flag; /* Context swapping flag           */
 548         __volatile__ long interrupt_flag; /* Interruption handler flag     */
 549         __volatile__ long dma_flag;     /* DMA dispatch flag               */
 550         struct timer_list timer;        /* Timer for delaying ctx switch   */
 551         wait_queue_head_t context_wait; /* Processes waiting on ctx switch */
 552         int               last_checked; /* Last context checked for DMA    */
 553         int               last_context; /* Last current context            */
 554         unsigned long     last_switch;  /* jiffies at last context switch  */
 555         struct work_struct                work;
 556 #if __HAVE_VBL_IRQ
 557         wait_queue_head_t vbl_queue;
 558         atomic_t          vbl_received;
 559         spinlock_t        vbl_lock;
 560         drm_vbl_sig_t     vbl_sigs;
 561         unsigned int      vbl_pending;
 562 #endif
 563         cycles_t          ctx_start;
 564         cycles_t          lck_start;
 565
 566                                 /* Callback to X server for context switch
 567                                    and for heavy-handed reset. */
 568         char              buf[DRM_BSZ]; /* Output buffer                   */
 569         char              *buf_rp;      /* Read pointer                    */
 570         char              *buf_wp;      /* Write pointer                   */
 571         char              *buf_end;     /* End pointer                     */
 572         struct fasync_struct *buf_async;/* Processes waiting for SIGIO     */
 573         wait_queue_head_t buf_readers;  /* Processes waiting to read       */
 574         wait_queue_head_t buf_writers;  /* Processes waiting to ctx switch */
 575
 576 #if __REALLY_HAVE_AGP
 577         drm_agp_head_t    *agp;
 578 #endif
 579         struct pci_dev *pdev;
 580 #ifdef __alpha__
 581 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,3)
 582         struct pci_controler *hose;
 583 #else
 584         struct pci_controller *hose;
 585 #endif
 586 #endif
 587         drm_sg_mem_t      *sg;  /* Scatter gather memory */
 588         unsigned long     *ctx_bitmap;
 589         void              *dev_private;
 590         drm_sigdata_t     sigdata; /* For block_all_signals */
 591         sigset_t          sigmask;
 592 } drm_device_t;
 593
 594
 595 /* ================================================================
 596  * Internal function definitions
 597  */
 598
 599                                 /* Misc. support (drm_init.h) */
 600 extern int           DRM(flags);
 601 extern void          DRM(parse_options)( char *s );
 602 extern int           DRM(cpu_valid)( void );
 603
 604                                 /* Driver support (drm_drv.h) */
 605 extern int           DRM(version)(struct inode *inode, struct file *filp,
 606                                   unsigned int cmd, unsigned long arg);
 607 extern int           DRM(open)(struct inode *inode, struct file *filp);
 608 extern int           DRM(release)(struct inode *inode, struct file *filp);
 609 extern int           DRM(ioctl)(struct inode *inode, struct file *filp,
 610                                 unsigned int cmd, unsigned long arg);
 611 extern int           DRM(lock)(struct inode *inode, struct file *filp,
 612                                unsigned int cmd, unsigned long arg);
 613 extern int           DRM(unlock)(struct inode *inode, struct file *filp,
 614                                  unsigned int cmd, unsigned long arg);
 615
 616                                 /* Device support (drm_fops.h) */
 617 extern int           DRM(open_helper)(struct inode *inode, struct file *filp,
 618                                       drm_device_t *dev);
 619 extern int           DRM(flush)(struct file *filp);
 620 extern int           DRM(fasync)(int fd, struct file *filp, int on);
 621
 622                                 /* Mapping support (drm_vm.h) */
 623 extern struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
 624                                    unsigned long address,
 625                                    int write_access);
 626 extern struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
 627                                        unsigned long address,
 628                                        int write_access);
 629 extern struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
 630                                        unsigned long address,
 631                                        int write_access);
 632 extern struct page *DRM(vm_sg_nopage)(struct vm_area_struct *vma,
 633                                       unsigned long address,
 634                                       int write_access);
 635 extern void          DRM(vm_open)(struct vm_area_struct *vma);
 636 extern void          DRM(vm_close)(struct vm_area_struct *vma);
 637 extern void          DRM(vm_shm_close)(struct vm_area_struct *vma);
 638 extern int           DRM(mmap_dma)(struct file *filp,
 639                                    struct vm_area_struct *vma);
 640 extern int           DRM(mmap)(struct file *filp, struct vm_area_struct *vma);
 641 extern unsigned int  DRM(poll)(struct file *filp, struct poll_table_struct *wait);
 642 extern ssize_t       DRM(read)(struct file *filp, char *buf, size_t count, loff_t *off);
 643
 644                                 /* Memory management support (drm_memory.h) */
 645 extern void          DRM(mem_init)(void);
 646 extern int           DRM(mem_info)(char *buf, char **start, off_t offset,
 647                                    int request, int *eof, void *data);
 648 extern void          *DRM(alloc)(size_t size, int area);
 649 extern void          *DRM(realloc)(void *oldpt, size_t oldsize, size_t size,
 650                                    int area);
 651 extern void          DRM(free)(void *pt, size_t size, int area);
 652 extern unsigned long DRM(alloc_pages)(int order, int area);
 653 extern void          DRM(free_pages)(unsigned long address, int order,
 654                                      int area);
 655 extern void          *DRM(ioremap)(unsigned long offset, unsigned long size);
 656 extern void          *DRM(ioremap_nocache)(unsigned long offset, unsigned long size);
 657 extern void          DRM(ioremapfree)(void *pt, unsigned long size);
 658
 659 #if __REALLY_HAVE_AGP
 660 extern agp_memory    *DRM(alloc_agp)(int pages, u32 type);
 661 extern int           DRM(free_agp)(agp_memory *handle, int pages);
 662 extern int           DRM(bind_agp)(agp_memory *handle, unsigned int start);
 663 extern int           DRM(unbind_agp)(agp_memory *handle);
 664 #endif
 665
 666                                 /* Misc. IOCTL support (drm_ioctl.h) */
 667 extern int           DRM(irq_busid)(struct inode *inode, struct file *filp,
 668                                     unsigned int cmd, unsigned long arg);
 669 extern int           DRM(getunique)(struct inode *inode, struct file *filp,
 670                                     unsigned int cmd, unsigned long arg);
 671 extern int           DRM(setunique)(struct inode *inode, struct file *filp,
 672                                     unsigned int cmd, unsigned long arg);
 673 extern int           DRM(getmap)(struct inode *inode, struct file *filp,
 674                                  unsigned int cmd, unsigned long arg);
 675 extern int           DRM(getclient)(struct inode *inode, struct file *filp,
 676                                     unsigned int cmd, unsigned long arg);
 677 extern int           DRM(getstats)(struct inode *inode, struct file *filp,
 678                                    unsigned int cmd, unsigned long arg);
 679
 680                                 /* Context IOCTL support (drm_context.h) */
 681 extern int           DRM(resctx)( struct inode *inode, struct file *filp,
 682                                   unsigned int cmd, unsigned long arg );
 683 extern int           DRM(addctx)( struct inode *inode, struct file *filp,
 684                                   unsigned int cmd, unsigned long arg );
 685 extern int           DRM(modctx)( struct inode *inode, struct file *filp,
 686                                   unsigned int cmd, unsigned long arg );
 687 extern int           DRM(getctx)( struct inode *inode, struct file *filp,
 688                                   unsigned int cmd, unsigned long arg );
 689 extern int           DRM(switchctx)( struct inode *inode, struct file *filp,
 690                                      unsigned int cmd, unsigned long arg );
 691 extern int           DRM(newctx)( struct inode *inode, struct file *filp,
 692                                   unsigned int cmd, unsigned long arg );
 693 extern int           DRM(rmctx)( struct inode *inode, struct file *filp,
 694                                  unsigned int cmd, unsigned long arg );
 695
 696 extern int           DRM(context_switch)(drm_device_t *dev, int old, int new);
 697 extern int           DRM(context_switch_complete)(drm_device_t *dev, int new);
 698
 699 #if __HAVE_CTX_BITMAP
 700 extern int           DRM(ctxbitmap_init)( drm_device_t *dev );
 701 extern void          DRM(ctxbitmap_cleanup)( drm_device_t *dev );
 702 #endif
 703
 704 extern int           DRM(setsareactx)( struct inode *inode, struct file *filp,
 705                                        unsigned int cmd, unsigned long arg );
 706 extern int           DRM(getsareactx)( struct inode *inode, struct file *filp,
 707                                        unsigned int cmd, unsigned long arg );
 708
 709                                 /* Drawable IOCTL support (drm_drawable.h) */
 710 extern int           DRM(adddraw)(struct inode *inode, struct file *filp,
 711                                   unsigned int cmd, unsigned long arg);
 712 extern int           DRM(rmdraw)(struct inode *inode, struct file *filp,
 713                                  unsigned int cmd, unsigned long arg);
 714
 715
 716                                 /* Authentication IOCTL support (drm_auth.h) */
 717 extern int           DRM(add_magic)(drm_device_t *dev, drm_file_t *priv,
 718                                     drm_magic_t magic);
 719 extern int           DRM(remove_magic)(drm_device_t *dev, drm_magic_t magic);
 720 extern int           DRM(getmagic)(struct inode *inode, struct file *filp,
 721                                    unsigned int cmd, unsigned long arg);
 722 extern int           DRM(authmagic)(struct inode *inode, struct file *filp,
 723                                     unsigned int cmd, unsigned long arg);
 724
 725                                 /* Placeholder for ioctls past */
 726 extern int           DRM(noop)(struct inode *inode, struct file *filp,
 727                                   unsigned int cmd, unsigned long arg);
 728
 729                                 /* Locking IOCTL support (drm_lock.h) */
 730 extern int           DRM(lock_take)(__volatile__ unsigned int *lock,
 731                                     unsigned int context);
 732 extern int           DRM(lock_transfer)(drm_device_t *dev,
 733                                         __volatile__ unsigned int *lock,
 734                                         unsigned int context);
 735 extern int           DRM(lock_free)(drm_device_t *dev,
 736                                     __volatile__ unsigned int *lock,
 737                                     unsigned int context);
 738 extern int           DRM(notifier)(void *priv);
 739
 740                                 /* Buffer management support (drm_bufs.h) */
 741 extern int           DRM(order)( unsigned long size );
 742 extern int           DRM(addmap)( struct inode *inode, struct file *filp,
 743                                   unsigned int cmd, unsigned long arg );
 744 extern int           DRM(rmmap)( struct inode *inode, struct file *filp,
 745                                  unsigned int cmd, unsigned long arg );
 746 #if __HAVE_DMA
 747 extern int           DRM(addbufs)( struct inode *inode, struct file *filp,
 748                                    unsigned int cmd, unsigned long arg );
 749 extern int           DRM(infobufs)( struct inode *inode, struct file *filp,
 750                                     unsigned int cmd, unsigned long arg );
 751 extern int           DRM(markbufs)( struct inode *inode, struct file *filp,
 752                                     unsigned int cmd, unsigned long arg );
 753 extern int           DRM(freebufs)( struct inode *inode, struct file *filp,
 754                                     unsigned int cmd, unsigned long arg );
 755 extern int           DRM(mapbufs)( struct inode *inode, struct file *filp,
 756                                    unsigned int cmd, unsigned long arg );
 757
 758                                 /* DMA support (drm_dma.h) */
 759 extern int           DRM(dma_setup)(drm_device_t *dev);
 760 extern void          DRM(dma_takedown)(drm_device_t *dev);
 761 extern void          DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf);
 762 extern void          DRM(reclaim_buffers)( struct file *filp );
 763 #if __HAVE_DMA_IRQ
 764 extern int           DRM(control)( struct inode *inode, struct file *filp,
 765                                    unsigned int cmd, unsigned long arg );
 766 extern int           DRM(irq_install)( drm_device_t *dev, int irq );
 767 extern int           DRM(irq_uninstall)( drm_device_t *dev );
 768 extern irqreturn_t   DRM(dma_service)( int irq, void *device,
 769                                        struct pt_regs *regs );
 770 extern void          DRM(driver_irq_preinstall)( drm_device_t *dev );
 771 extern void          DRM(driver_irq_postinstall)( drm_device_t *dev );
 772 extern void          DRM(driver_irq_uninstall)( drm_device_t *dev );
 773 #if __HAVE_VBL_IRQ
 774 extern int           DRM(wait_vblank)(struct inode *inode, struct file *filp,
 775                                       unsigned int cmd, unsigned long arg);
 776 extern int           DRM(vblank_wait)(drm_device_t *dev, unsigned int *vbl_seq);
 777 extern void          DRM(vbl_send_signals)( drm_device_t *dev );
 778 #endif
 779 #if __HAVE_DMA_IRQ_BH
 780 extern void          DRM(dma_immediate_bh)( void *dev );
 781 #endif
 782 #endif
 783
 784 #endif /* __HAVE_DMA */
 785
 786 #if __REALLY_HAVE_AGP
 787                                 /* AGP/GART support (drm_agpsupport.h) */
 788 extern drm_agp_head_t *DRM(agp_init)(void);
 789 extern void           DRM(agp_uninit)(void);
 790 extern int            DRM(agp_acquire)(struct inode *inode, struct file *filp,
 791                                        unsigned int cmd, unsigned long arg);
 792 extern void           DRM(agp_do_release)(void);
 793 extern int            DRM(agp_release)(struct inode *inode, struct file *filp,
 794                                        unsigned int cmd, unsigned long arg);
 795 extern int            DRM(agp_enable)(struct inode *inode, struct file *filp,
 796                                       unsigned int cmd, unsigned long arg);
 797 extern int            DRM(agp_info)(struct inode *inode, struct file *filp,
 798                                     unsigned int cmd, unsigned long arg);
 799 extern int            DRM(agp_alloc)(struct inode *inode, struct file *filp,
 800                                      unsigned int cmd, unsigned long arg);
 801 extern int            DRM(agp_free)(struct inode *inode, struct file *filp,
 802                                     unsigned int cmd, unsigned long arg);
 803 extern int            DRM(agp_unbind)(struct inode *inode, struct file *filp,
 804                                       unsigned int cmd, unsigned long arg);
 805 extern int            DRM(agp_bind)(struct inode *inode, struct file *filp,
 806                                     unsigned int cmd, unsigned long arg);
 807 extern agp_memory     *DRM(agp_allocate_memory)(size_t pages, u32 type);
 808 extern int            DRM(agp_free_memory)(agp_memory *handle);
 809 extern int            DRM(agp_bind_memory)(agp_memory *handle, off_t start);
 810 extern int            DRM(agp_unbind_memory)(agp_memory *handle);
 811 #endif
 812
 813                                 /* Stub support (drm_stub.h) */
 814 int                   DRM(stub_register)(const char *name,
 815                                          struct file_operations *fops,
 816                                          drm_device_t *dev);
 817 int                   DRM(stub_unregister)(int minor);
 818
 819                                 /* Proc support (drm_proc.h) */
 820 extern struct proc_dir_entry *DRM(proc_init)(drm_device_t *dev,
 821                                              int minor,
 822                                              struct proc_dir_entry *root,
 823                                              struct proc_dir_entry **dev_root);
 824 extern int            DRM(proc_cleanup)(int minor,
 825                                         struct proc_dir_entry *root,
 826                                         struct proc_dir_entry *dev_root);
 827
 828 #if __HAVE_SG
 829                                 /* Scatter Gather Support (drm_scatter.h) */
 830 extern void           DRM(sg_cleanup)(drm_sg_mem_t *entry);
 831 extern int            DRM(sg_alloc)(struct inode *inode, struct file *filp,
 832                                     unsigned int cmd, unsigned long arg);
 833 extern int            DRM(sg_free)(struct inode *inode, struct file *filp,
 834                                    unsigned int cmd, unsigned long arg);
 835 #endif
 836
 837                                /* ATI PCIGART support (ati_pcigart.h) */
 838 extern int            DRM(ati_pcigart_init)(drm_device_t *dev,
 839                                             unsigned long *addr,
 840                                             dma_addr_t *bus_addr);
 841 extern int            DRM(ati_pcigart_cleanup)(drm_device_t *dev,
 842                                                unsigned long addr,
 843                                                dma_addr_t bus_addr);
 844
 845 #endif /* __KERNEL__ */
 846 #endif