1 /*
   2  * drmP.h -- Private header for Direct Rendering Manager -*- linux-c -*-
   3  * Created: Mon Jan  4 10:05:05 1999 by faith@precisioninsight.com
   4  */
   5 /*
   6  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   7  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   8  * Copyright (c) 2009, Intel Corporation.
   9  * All rights reserved.
  10  *
  11  * Permission is hereby granted, free of charge, to any person obtaining a
  12  * copy of this software and associated documentation files (the "Software"),
  13  * to deal in the Software without restriction, including without limitation
  14  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  15  * and/or sell copies of the Software, and to permit persons to whom the
  16  * Software is furnished to do so, subject to the following conditions:
  17  *
  18  * The above copyright notice and this permission notice (including the next
  19  * paragraph) shall be included in all copies or substantial portions of the
  20  * Software.
  21  *
  22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  23  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  25  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  26  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  27  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  28  * OTHER DEALINGS IN THE SOFTWARE.
  29  *
  30  * Authors:
  31  *    Rickard E. (Rik) Faith <faith@valinux.com>
  32  *    Gareth Hughes <gareth@valinux.com>
  33  *
  34  */
  35 
  36 /*
  37  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  38  * Use is subject to license terms.
  39  */
  40 
  41 #ifndef _DRMP_H
  42 #define _DRMP_H
  43 
  44 #include <sys/types.h>
  45 #include <sys/conf.h>
  46 #include <sys/modctl.h>
  47 #include <sys/stat.h>
  48 #include <sys/file.h>
  49 #include <sys/cmn_err.h>
  50 #include <sys/varargs.h>
  51 #include <sys/pci.h>
  52 #include <sys/ddi.h>
  53 #include <sys/sunddi.h>
  54 #include <sys/sunldi.h>
  55 #include <sys/pmem.h>
  56 #include <sys/agpgart.h>
  57 #include <sys/time.h>
  58 #include "drm_atomic.h"
  59 #include "drm.h"
  60 #include "queue.h"
  61 #include "drm_linux_list.h"
  62 
  63 #ifndef __inline__
  64 #define __inline__      inline
  65 #endif
  66 
  67 #if !defined(__FUNCTION__)
  68 #if defined(C99)
  69 #define __FUNCTION__ __func__
  70 #else
  71 #define __FUNCTION__    " "
  72 #endif
  73 #endif
  74 
  75 /* DRM space units */
  76 #define DRM_PAGE_SHIFT                  PAGESHIFT
  77 #define DRM_PAGE_SIZE                   (1 << DRM_PAGE_SHIFT)
  78 #define DRM_PAGE_OFFSET                 (DRM_PAGE_SIZE - 1)
  79 #define DRM_PAGE_MASK                   ~(DRM_PAGE_SIZE - 1)
  80 #define DRM_MB2PAGES(x)                 ((x) << 8)
  81 #define DRM_PAGES2BYTES(x)              ((x) << DRM_PAGE_SHIFT)
  82 #define DRM_BYTES2PAGES(x)              ((x) >> DRM_PAGE_SHIFT)
  83 #define DRM_PAGES2KB(x)                 ((x) << 2)
  84 #define DRM_ALIGNED(offset)             (((offset) & DRM_PAGE_OFFSET) == 0)
  85 
  86 #define PAGE_SHIFT                      DRM_PAGE_SHIFT
  87 #define PAGE_SIZE                       DRM_PAGE_SIZE
  88 
  89 #define DRM_MAX_INSTANCES       8
  90 #define DRM_DEVNODE             "drm"
  91 #define DRM_UNOPENED            0
  92 #define DRM_OPENED              1
  93 
  94 #define DRM_HASH_SIZE           16 /* Size of key hash table */
  95 #define DRM_KERNEL_CONTEXT      0  /* Change drm_resctx if changed */
  96 #define DRM_RESERVED_CONTEXTS   1  /* Change drm_resctx if changed */
  97 
  98 #define DRM_MEM_DMA        0
  99 #define DRM_MEM_SAREA      1
 100 #define DRM_MEM_DRIVER     2
 101 #define DRM_MEM_MAGIC      3
 102 #define DRM_MEM_IOCTLS     4
 103 #define DRM_MEM_MAPS       5
 104 #define DRM_MEM_BUFS       6
 105 #define DRM_MEM_SEGS       7
 106 #define DRM_MEM_PAGES      8
 107 #define DRM_MEM_FILES     9
 108 #define DRM_MEM_QUEUES    10
 109 #define DRM_MEM_CMDS      11
 110 #define DRM_MEM_MAPPINGS  12
 111 #define DRM_MEM_BUFLISTS  13
 112 #define DRM_MEM_DRMLISTS  14
 113 #define DRM_MEM_TOTALDRM  15
 114 #define DRM_MEM_BOUNDDRM  16
 115 #define DRM_MEM_CTXBITMAP 17
 116 #define DRM_MEM_STUB      18
 117 #define DRM_MEM_SGLISTS   19
 118 #define DRM_MEM_AGPLISTS  20
 119 #define DRM_MEM_CTXLIST   21
 120 #define DRM_MEM_MM              22
 121 #define DRM_MEM_HASHTAB         23
 122 #define DRM_MEM_OBJECTS         24
 123 
 124 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
 125 #define DRM_MAP_HASH_OFFSET 0x10000000
 126 #define DRM_MAP_HASH_ORDER 12
 127 #define DRM_OBJECT_HASH_ORDER 12
 128 #define DRM_FILE_PAGE_OFFSET_START ((0xFFFFFFFFUL >> PAGE_SHIFT) + 1)
 129 #define DRM_FILE_PAGE_OFFSET_SIZE ((0xFFFFFFFFUL >> PAGE_SHIFT) * 16)
 130 #define DRM_MM_INIT_MAX_PAGES 256
 131 
 132 
 133 /* Internal types and structures */
 134 #define DRM_ARRAY_SIZE(x) (sizeof (x) / sizeof (x[0]))
 135 #define DRM_MIN(a, b) ((a) < (b) ? (a) : (b))
 136 #define DRM_MAX(a, b) ((a) > (b) ? (a) : (b))
 137 
 138 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 139 
 140 #define __OS_HAS_AGP    1
 141 
 142 #define DRM_DEV_MOD     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
 143 #define DRM_DEV_UID     0
 144 #define DRM_DEV_GID     0
 145 
 146 #define DRM_CURRENTPID          ddi_get_pid()
 147 #define DRM_SPINLOCK(l)         mutex_enter(l)
 148 #define DRM_SPINUNLOCK(u)       mutex_exit(u)
 149 #define DRM_SPINLOCK_ASSERT(l)
 150 #define DRM_LOCK()      mutex_enter(&dev->dev_lock)
 151 #define DRM_UNLOCK()    mutex_exit(&dev->dev_lock)
 152 #define DRM_LOCK_OWNED()        ASSERT(mutex_owned(&dev->dev_lock))
 153 #define spin_lock_irqsave(l, flag)              mutex_enter(l)
 154 #define spin_unlock_irqrestore(u, flag) mutex_exit(u)
 155 #define spin_lock(l)    mutex_enter(l)
 156 #define spin_unlock(u)  mutex_exit(u)
 157 
 158 
 159 #define DRM_UDELAY(sec)  delay(drv_usectohz(sec *1000))
 160 #define DRM_MEMORYBARRIER()
 161 
 162 typedef struct drm_file         drm_file_t;
 163 typedef struct drm_device       drm_device_t;
 164 typedef struct drm_driver_info drm_driver_t;
 165 
 166 #define DRM_DEVICE      drm_device_t *dev = dev1
 167 #define DRM_IOCTL_ARGS  \
 168         drm_device_t *dev1, intptr_t data, drm_file_t *fpriv, int mode
 169 
 170 #define DRM_COPYFROM_WITH_RETURN(dest, src, size)       \
 171         if (ddi_copyin((src), (dest), (size), 0)) {     \
 172                 DRM_ERROR("%s: copy from user failed", __func__);       \
 173                 return (EFAULT);        \
 174         }
 175 
 176 #define DRM_COPYTO_WITH_RETURN(dest, src, size) \
 177         if (ddi_copyout((src), (dest), (size), 0)) {    \
 178                 DRM_ERROR("%s: copy to user failed", __func__); \
 179                 return (EFAULT);        \
 180         }
 181 
 182 #define DRM_COPY_FROM_USER(dest, src, size) \
 183         ddi_copyin((src), (dest), (size), 0) /* flag for src */
 184 
 185 #define DRM_COPY_TO_USER(dest, src, size) \
 186         ddi_copyout((src), (dest), (size), 0) /* flags for dest */
 187 
 188 #define DRM_COPY_FROM_USER_UNCHECKED(arg1, arg2, arg3)  \
 189         ddi_copyin((arg2), (arg1), (arg3), 0)
 190 
 191 #define DRM_COPY_TO_USER_UNCHECKED(arg1, arg2, arg3)        \
 192         ddi_copyout((arg2), arg1, arg3, 0)
 193 
 194 #define DRM_READ8(map, offset) \
 195         *(volatile uint8_t *)((uintptr_t)((map)->dev_addr) + (offset))
 196 #define DRM_READ16(map, offset) \
 197         *(volatile uint16_t *)((uintptr_t)((map)->dev_addr) + (offset))
 198 #define DRM_READ32(map, offset) \
 199         *(volatile uint32_t *)((uintptr_t)((map)->dev_addr) + (offset))
 200 #define DRM_WRITE8(map, offset, val) \
 201         *(volatile uint8_t *)((uintptr_t)((map)->dev_addr) + (offset)) = (val)
 202 #define DRM_WRITE16(map, offset, val) \
 203         *(volatile uint16_t *)((uintptr_t)((map)->dev_addr) + (offset)) = (val)
 204 #define DRM_WRITE32(map, offset, val) \
 205         *(volatile uint32_t *)((uintptr_t)((map)->dev_addr) + (offset)) = (val)
 206 
 207 typedef struct drm_wait_queue {
 208         kcondvar_t      cv;
 209         kmutex_t        lock;
 210 }wait_queue_head_t;
 211 
 212 #define DRM_INIT_WAITQUEUE(q, pri)      \
 213 { \
 214         mutex_init(&(q)->lock, NULL, MUTEX_DRIVER, pri); \
 215         cv_init(&(q)->cv, NULL, CV_DRIVER, NULL);        \
 216 }
 217 
 218 #define DRM_FINI_WAITQUEUE(q)   \
 219 { \
 220         mutex_destroy(&(q)->lock);       \
 221         cv_destroy(&(q)->cv);    \
 222 }
 223 
 224 #define DRM_WAKEUP(q)   \
 225 { \
 226         mutex_enter(&(q)->lock); \
 227         cv_broadcast(&(q)->cv);  \
 228         mutex_exit(&(q)->lock);  \
 229 }
 230 
 231 #define jiffies ddi_get_lbolt()
 232 
 233 #define DRM_WAIT_ON(ret, q, timeout, condition)                         \
 234         mutex_enter(&(q)->lock);                                 \
 235         while (!(condition)) {                                          \
 236                 ret = cv_reltimedwait_sig(&(q)->cv, &(q)->lock, timeout,\
 237                     TR_CLOCK_TICK);                                     \
 238                 if (ret == -1) {                                        \
 239                         ret = EBUSY;                                    \
 240                         break;                                          \
 241                 } else if (ret == 0) {                                  \
 242                         ret = EINTR;                                    \
 243                         break;                                          \
 244                 } else {                                                \
 245                         ret = 0;                                        \
 246                 }                                                       \
 247         }                                                               \
 248         mutex_exit(&(q)->lock);
 249 
 250 #define DRM_WAIT(ret, q, condition)  \
 251 mutex_enter(&(q)->lock); \
 252 if (!(condition)) {     \
 253         ret = cv_timedwait_sig(&(q)->cv, &(q)->lock, jiffies + 30 * DRM_HZ); \
 254         if (ret == -1) {                                \
 255                 /* gfx maybe hang */    \
 256                 if (!(condition))       \
 257                         ret = -2;       \
 258         } else {        \
 259                 ret = 0;        \
 260         }       \
 261 } \
 262 mutex_exit(&(q)->lock);
 263 
 264 
 265 #define DRM_GETSAREA()                                          \
 266 {                                                               \
 267         drm_local_map_t *map;                                   \
 268         DRM_SPINLOCK_ASSERT(&dev->dev_lock);                     \
 269         TAILQ_FOREACH(map, &dev->maplist, link) {                \
 270                 if (map->type == _DRM_SHM &&                 \
 271                         map->flags & _DRM_CONTAINS_LOCK) {       \
 272                         dev_priv->sarea = map;                       \
 273                         break;                                  \
 274                 }                                               \
 275         }                                                       \
 276 }
 277 
 278 #define LOCK_TEST_WITH_RETURN(dev, fpriv)                               \
 279         if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) ||                \
 280             dev->lock.filp != fpriv) {                                       \
 281                 DRM_DEBUG("%s called without lock held", __func__);     \
 282                 return (EINVAL);        \
 283         }
 284 
 285 #define DRM_IRQ_ARGS    caddr_t arg
 286 #define IRQ_HANDLED             DDI_INTR_CLAIMED
 287 #define IRQ_NONE                DDI_INTR_UNCLAIMED
 288 
 289 enum {
 290         DRM_IS_NOT_AGP,
 291         DRM_IS_AGP,
 292         DRM_MIGHT_BE_AGP
 293 };
 294 
 295 /* Capabilities taken from src/sys/dev/pci/pcireg.h. */
 296 #ifndef PCIY_AGP
 297 #define PCIY_AGP                0x02
 298 #endif
 299 
 300 #ifndef PCIY_EXPRESS
 301 #define PCIY_EXPRESS            0x10
 302 #endif
 303 
 304 #define PAGE_ALIGN(addr)        (((addr) + DRM_PAGE_SIZE - 1) & DRM_PAGE_MASK)
 305 #define DRM_SUSER(p)            (crgetsgid(p) == 0 || crgetsuid(p) == 0)
 306 
 307 #define DRM_GEM_OBJIDR_HASHNODE 1024
 308 #define idr_list_for_each(entry, head) \
 309         for (int key = 0; key < DRM_GEM_OBJIDR_HASHNODE; key++) \
 310                 list_for_each(entry, &(head)->next[key])
 311 
 312 /*
 313  * wait for 400 milliseconds
 314  */
 315 #define DRM_HZ                  drv_usectohz(400000)
 316 
 317 typedef unsigned long dma_addr_t;
 318 typedef uint64_t        u64;
 319 typedef uint32_t        u32;
 320 typedef uint16_t        u16;
 321 typedef uint8_t         u8;
 322 typedef uint_t          irqreturn_t;
 323 
 324 #define DRM_SUPPORT     1
 325 #define DRM_UNSUPPORT   0
 326 
 327 #define __OS_HAS_AGP    1
 328 
 329 #define __offsetof(type, field) ((size_t)(&((type *)0)->field))
 330 #define offsetof(type, field)   __offsetof(type, field)
 331 
 332 typedef struct drm_pci_id_list
 333 {
 334         int vendor;
 335         int device;
 336         long driver_private;
 337         char *name;
 338 } drm_pci_id_list_t;
 339 
 340 #define DRM_AUTH        0x1
 341 #define DRM_MASTER      0x2
 342 #define DRM_ROOT_ONLY   0x4
 343 typedef int drm_ioctl_t(DRM_IOCTL_ARGS);
 344 typedef struct drm_ioctl_desc {
 345         int     (*func)(DRM_IOCTL_ARGS);
 346         int     flags;
 347 } drm_ioctl_desc_t;
 348 
 349 typedef struct drm_magic_entry {
 350         drm_magic_t             magic;
 351         struct drm_file         *priv;
 352         struct drm_magic_entry  *next;
 353 } drm_magic_entry_t;
 354 
 355 typedef struct drm_magic_head {
 356         struct drm_magic_entry *head;
 357         struct drm_magic_entry *tail;
 358 } drm_magic_head_t;
 359 
 360 typedef struct drm_buf {
 361         int             idx;            /* Index into master buflist */
 362         int             total;          /* Buffer size */
 363         int             order;          /* log-base-2(total) */
 364         int             used;           /* Amount of buffer in use (for DMA) */
 365         unsigned long   offset;         /* Byte offset (used internally) */
 366         void            *address;       /* Address of buffer */
 367         unsigned long   bus_address;    /* Bus address of buffer */
 368         struct drm_buf  *next;          /* Kernel-only: used for free list */
 369         volatile int    pending;        /* On hardware DMA queue */
 370         drm_file_t              *filp;
 371                                 /* Uniq. identifier of holding process */
 372         int             context;        /* Kernel queue for this buffer */
 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 stoarge */
 383         void            *dev_private;   /* Per-buffer private storage */
 384 } drm_buf_t;
 385 
 386 typedef struct drm_freelist {
 387         int               initialized;  /* Freelist in use              */
 388         uint32_t          count;        /* Number of free buffers       */
 389         drm_buf_t         *next;        /* End pointer                  */
 390 
 391         int               low_mark;     /* Low water mark               */
 392         int               high_mark;    /* High water mark              */
 393 } drm_freelist_t;
 394 
 395 typedef struct drm_buf_entry {
 396         int               buf_size;
 397         int               buf_count;
 398         drm_buf_t         *buflist;
 399         int               seg_count;
 400         int               page_order;
 401 
 402         uint32_t          *seglist;
 403         unsigned long     *seglist_bus;
 404 
 405         drm_freelist_t    freelist;
 406 } drm_buf_entry_t;
 407 
 408 typedef TAILQ_HEAD(drm_file_list, drm_file) drm_file_list_t;
 409 
 410 /* BEGIN CSTYLED */
 411 typedef struct drm_local_map {
 412         unsigned long   offset;  /*  Physical address (0 for SAREA)     */
 413         unsigned long   size;    /* Physical size (bytes)               */
 414         drm_map_type_t  type;    /* Type of memory mapped               */
 415         drm_map_flags_t flags;   /* Flags                               */
 416         void            *handle; /* User-space: "Handle" to pass to mmap */
 417                                  /* Kernel-space: kernel-virtual address */
 418         int             mtrr;    /* Boolean: MTRR used                  */
 419                                  /* Private data                        */
 420         int             rid;     /* PCI resource ID for bus_space       */
 421         int             kernel_owned; /* Boolean: 1= initmapped, 0= addmapped */
 422         caddr_t         dev_addr;         /* base device address        */
 423         ddi_acc_handle_t  dev_handle;     /* The data access handle     */
 424         ddi_umem_cookie_t drm_umem_cookie; /* For SAREA alloc and free  */
 425         TAILQ_ENTRY(drm_local_map) link;
 426 } drm_local_map_t;
 427 /* END CSTYLED */
 428 
 429 /*
 430  * This structure defines the drm_mm memory object, which will be used by the
 431  * DRM for its buffer objects.
 432  */
 433 struct drm_gem_object {
 434         /* Reference count of this object */
 435         atomic_t refcount;
 436 
 437         /* Handle count of this object. Each handle also holds a reference */
 438         atomic_t handlecount;
 439 
 440         /* Related drm device */
 441         struct drm_device *dev;
 442 
 443         int flink;
 444         /*
 445          * Size of the object, in bytes.  Immutable over the object's
 446          * lifetime.
 447          */
 448         size_t size;
 449 
 450         /*
 451          * Global name for this object, starts at 1. 0 means unnamed.
 452          * Access is covered by the object_name_lock in the related drm_device
 453          */
 454         int name;
 455 
 456         /*
 457          * Memory domains. These monitor which caches contain read/write data
 458          * related to the object. When transitioning from one set of domains
 459          * to another, the driver is called to ensure that caches are suitably
 460          * flushed and invalidated
 461          */
 462         uint32_t read_domains;
 463         uint32_t write_domain;
 464 
 465         /*
 466          * While validating an exec operation, the
 467          * new read/write domain values are computed here.
 468          * They will be transferred to the above values
 469          * at the point that any cache flushing occurs
 470          */
 471         uint32_t pending_read_domains;
 472         uint32_t pending_write_domain;
 473 
 474         void *driver_private;
 475 
 476         drm_local_map_t *map;
 477         ddi_dma_handle_t dma_hdl;
 478         ddi_acc_handle_t acc_hdl;
 479         caddr_t kaddr;
 480         size_t real_size;       /* real size of memory */
 481         pfn_t *pfnarray;
 482 };
 483 
 484 struct idr_list {
 485         struct idr_list *next, *prev;
 486         struct drm_gem_object *obj;
 487         uint32_t        handle;
 488         caddr_t contain_ptr;
 489 };
 490 
 491 struct drm_file {
 492         TAILQ_ENTRY(drm_file) link;
 493         int               authenticated;
 494         int               master;
 495         int               minor;
 496         pid_t             pid;
 497         uid_t             uid;
 498         int               refs;
 499         drm_magic_t       magic;
 500         unsigned long     ioctl_count;
 501         void             *driver_priv;
 502         /* Mapping of mm object handles to object pointers. */
 503         struct idr_list object_idr;
 504         /* Lock for synchronization of access to object_idr. */
 505         kmutex_t table_lock;
 506 
 507         dev_t dev;
 508         cred_t *credp;
 509 };
 510 
 511 typedef struct drm_lock_data {
 512         drm_hw_lock_t   *hw_lock;       /* Hardware lock                */
 513         drm_file_t      *filp;
 514         /* Uniq. identifier of holding process */
 515         kcondvar_t      lock_cv;        /* lock queue - SOLARIS Specific */
 516         kmutex_t        lock_mutex;     /* lock - SOLARIS Specific */
 517         unsigned long   lock_time;      /* Time of last lock in clock ticks */
 518 } drm_lock_data_t;
 519 
 520 /*
 521  * This structure, in drm_device_t, is always initialized while the device
 522  * is open.  dev->dma_lock protects the incrementing of dev->buf_use, which
 523  * when set marks that no further bufs may be allocated until device teardown
 524  * occurs (when the last open of the device has closed).  The high/low
 525  * watermarks of bufs are only touched by the X Server, and thus not
 526  * concurrently accessed, so no locking is needed.
 527  */
 528 typedef struct drm_device_dma {
 529         drm_buf_entry_t bufs[DRM_MAX_ORDER+1];
 530         int             buf_count;
 531         drm_buf_t       **buflist;      /* Vector of pointers info bufs    */
 532         int             seg_count;
 533         int             page_count;
 534         unsigned long   *pagelist;
 535         unsigned long   byte_count;
 536         enum {
 537                 _DRM_DMA_USE_AGP = 0x01,
 538                 _DRM_DMA_USE_SG  = 0x02
 539         } flags;
 540 } drm_device_dma_t;
 541 
 542 typedef struct drm_agp_mem {
 543         void            *handle;
 544         unsigned long   bound; /* address */
 545         int             pages;
 546         caddr_t         phys_addr;
 547         struct drm_agp_mem *prev;
 548         struct drm_agp_mem *next;
 549 } drm_agp_mem_t;
 550 
 551 typedef struct drm_agp_head {
 552         agp_info_t      agp_info;
 553         const char      *chipset;
 554         drm_agp_mem_t   *memory;
 555         unsigned long   mode;
 556         int             enabled;
 557         int             acquired;
 558         unsigned long   base;
 559         int             mtrr;
 560         int             cant_use_aperture;
 561         unsigned long   page_mask;
 562         ldi_ident_t     agpgart_li;
 563         ldi_handle_t    agpgart_lh;
 564 } drm_agp_head_t;
 565 
 566 
 567 typedef struct drm_dma_handle {
 568         ddi_dma_handle_t        dma_hdl;
 569         ddi_acc_handle_t        acc_hdl;
 570         ddi_dma_cookie_t        cookie;
 571         uint_t          cookie_num;
 572         uintptr_t               vaddr;   /* virtual addr */
 573         uintptr_t               paddr;   /* physical addr */
 574         size_t          real_sz; /* real size of memory */
 575 } drm_dma_handle_t;
 576 
 577 typedef struct drm_sg_mem {
 578         unsigned long   handle;
 579         void            *virtual;
 580         int             pages;
 581         dma_addr_t      *busaddr;
 582         ddi_umem_cookie_t       *umem_cookie;
 583         drm_dma_handle_t        *dmah_sg;
 584         drm_dma_handle_t        *dmah_gart; /* Handle to PCI memory */
 585 } drm_sg_mem_t;
 586 
 587 /*
 588  * Generic memory manager structs
 589  */
 590 
 591 struct drm_mm_node {
 592         struct list_head fl_entry;
 593         struct list_head ml_entry;
 594         int free;
 595         unsigned long start;
 596         unsigned long size;
 597         struct drm_mm *mm;
 598         void *private;
 599 };
 600 
 601 struct drm_mm {
 602         struct list_head fl_entry;
 603         struct list_head ml_entry;
 604 };
 605 
 606 typedef TAILQ_HEAD(drm_map_list, drm_local_map) drm_map_list_t;
 607 
 608 typedef TAILQ_HEAD(drm_vbl_sig_list, drm_vbl_sig) drm_vbl_sig_list_t;
 609 typedef struct drm_vbl_sig {
 610         TAILQ_ENTRY(drm_vbl_sig) link;
 611         unsigned int    sequence;
 612         int             signo;
 613         int             pid;
 614 } drm_vbl_sig_t;
 615 
 616 
 617 /* used for clone device */
 618 typedef TAILQ_HEAD(drm_cminor_list, drm_cminor) drm_cminor_list_t;
 619 typedef struct drm_cminor {
 620         TAILQ_ENTRY(drm_cminor) link;
 621         drm_file_t              *fpriv;
 622         int                     minor;
 623 } drm_cminor_t;
 624 
 625 /* location of GART table */
 626 #define DRM_ATI_GART_MAIN       1
 627 #define DRM_ATI_GART_FB         2
 628 
 629 typedef struct ati_pcigart_info {
 630         int gart_table_location;
 631         int is_pcie;
 632         void *addr;
 633         dma_addr_t bus_addr;
 634         drm_local_map_t mapping;
 635 } drm_ati_pcigart_info;
 636 
 637 /* DRM device structure */
 638 struct drm_device;
 639 struct drm_driver_info {
 640         int (*load)(struct drm_device *, unsigned long);
 641         int (*firstopen)(struct drm_device *);
 642         int (*open)(struct drm_device *, drm_file_t *);
 643         void (*preclose)(struct drm_device *, drm_file_t *);
 644         void (*postclose)(struct drm_device *, drm_file_t *);
 645         void (*lastclose)(struct drm_device *);
 646         int (*unload)(struct drm_device *);
 647         void (*reclaim_buffers_locked)(struct drm_device *, drm_file_t *);
 648         int (*presetup)(struct drm_device *);
 649         int (*postsetup)(struct drm_device *);
 650         int (*open_helper)(struct drm_device *, drm_file_t *);
 651         void (*free_filp_priv)(struct drm_device *, drm_file_t *);
 652         void (*release)(struct drm_device *, void *);
 653         int (*dma_ioctl)(DRM_IOCTL_ARGS);
 654         void (*dma_ready)(struct drm_device *);
 655         int (*dma_quiescent)(struct drm_device *);
 656         int (*dma_flush_block_and_flush)(struct drm_device *,
 657                         int, drm_lock_flags_t);
 658         int (*dma_flush_unblock)(struct drm_device *, int,
 659                                         drm_lock_flags_t);
 660         int (*context_ctor)(struct drm_device *, int);
 661         int (*context_dtor)(struct drm_device *, int);
 662         int (*kernel_context_switch)(struct drm_device *, int, int);
 663         int (*kernel_context_switch_unlock)(struct drm_device *);
 664         int (*device_is_agp) (struct drm_device *);
 665         int (*irq_preinstall)(struct drm_device *);
 666         void (*irq_postinstall)(struct drm_device *);
 667         void (*irq_uninstall)(struct drm_device *dev);
 668         uint_t (*irq_handler)(DRM_IRQ_ARGS);
 669         int (*vblank_wait)(struct drm_device *, unsigned int *);
 670         int (*vblank_wait2)(struct drm_device *, unsigned int *);
 671         /* added for intel minimized vblank */
 672         u32 (*get_vblank_counter)(struct drm_device *dev, int crtc);
 673         int (*enable_vblank)(struct drm_device *dev, int crtc);
 674         void (*disable_vblank)(struct drm_device *dev, int crtc);
 675 
 676         /*
 677          * Driver-specific constructor for drm_gem_objects, to set up
 678          * obj->driver_private.
 679          *
 680          * Returns 0 on success.
 681          */
 682         int (*gem_init_object) (struct drm_gem_object *obj);
 683         void (*gem_free_object) (struct drm_gem_object *obj);
 684 
 685 
 686         drm_ioctl_desc_t *driver_ioctls;
 687         int     max_driver_ioctl;
 688 
 689         int     buf_priv_size;
 690         int     driver_major;
 691         int     driver_minor;
 692         int     driver_patchlevel;
 693         const char *driver_name;        /* Simple driver name              */
 694         const char *driver_desc;        /* Longer driver name              */
 695         const char *driver_date;        /* Date of last major changes.     */
 696 
 697         unsigned use_agp :1;
 698         unsigned require_agp :1;
 699         unsigned use_sg :1;
 700         unsigned use_dma :1;
 701         unsigned use_pci_dma :1;
 702         unsigned use_dma_queue :1;
 703         unsigned use_irq :1;
 704         unsigned use_vbl_irq :1;
 705         unsigned use_vbl_irq2 :1;
 706         unsigned use_mtrr :1;
 707         unsigned use_gem;
 708 };
 709 
 710 /*
 711  * hardware-specific code needs to initialize mutexes which
 712  * can be used in interrupt context, so they need to know
 713  * the interrupt priority. Interrupt cookie in drm_device
 714  * structure is the intr_block field.
 715  */
 716 #define DRM_INTR_PRI(dev) \
 717         DDI_INTR_PRI((dev)->intr_block)
 718 
 719 struct drm_device {
 720         drm_driver_t    *driver;
 721         drm_cminor_list_t       minordevs;
 722         dev_info_t *dip;
 723         void    *drm_handle;
 724         int drm_supported;
 725         const char *desc; /* current driver description */
 726         kmutex_t *irq_mutex;
 727         kcondvar_t *irq_cv;
 728 
 729         ddi_iblock_cookie_t intr_block;
 730         uint32_t        pci_device;     /* PCI device id */
 731         uint32_t        pci_vendor;
 732         char            *unique;        /* Unique identifier: e.g., busid  */
 733         int             unique_len;     /* Length of unique field          */
 734         int             if_version;     /* Highest interface version set */
 735         int             flags;  /* Flags to open(2)                */
 736 
 737         /* Locks */
 738         kmutex_t        vbl_lock;       /* protects vblank operations */
 739         kmutex_t        dma_lock;       /* protects dev->dma */
 740         kmutex_t        irq_lock;       /* protects irq condition checks */
 741         kmutex_t        dev_lock;       /* protects everything else */
 742         drm_lock_data_t   lock;         /* Information on hardware lock    */
 743         kmutex_t        struct_mutex;   /* < For others      */
 744 
 745         /* Usage Counters */
 746         int               open_count;   /* Outstanding files open          */
 747         int               buf_use;      /* Buffers in use -- cannot alloc  */
 748 
 749         /* Performance counters */
 750         unsigned long     counters;
 751         drm_stat_type_t   types[15];
 752         uint32_t          counts[15];
 753 
 754         /* Authentication */
 755         drm_file_list_t   files;
 756         drm_magic_head_t  magiclist[DRM_HASH_SIZE];
 757 
 758         /* Linked list of mappable regions. Protected by dev_lock */
 759         drm_map_list_t    maplist;
 760 
 761         drm_local_map_t   **context_sareas;
 762         int               max_context;
 763 
 764         /* DMA queues (contexts) */
 765         drm_device_dma_t  *dma;         /* Optional pointer for DMA support */
 766 
 767         /* Context support */
 768         int               irq;          /* Interrupt used by board         */
 769         int               irq_enabled;  /* True if the irq handler is enabled */
 770         int               pci_domain;
 771         int               pci_bus;
 772         int               pci_slot;
 773         int               pci_func;
 774         atomic_t          context_flag; /* Context swapping flag           */
 775         int               last_context; /* Last current context            */
 776 
 777         /* Only used for Radeon */
 778         atomic_t        vbl_received;
 779         atomic_t        vbl_received2;
 780 
 781         drm_vbl_sig_list_t vbl_sig_list;
 782         drm_vbl_sig_list_t vbl_sig_list2;
 783         /*
 784          * At load time, disabling the vblank interrupt won't be allowed since
 785          * old clients may not call the modeset ioctl and therefore misbehave.
 786          * Once the modeset ioctl *has* been called though, we can safely
 787          * disable them when unused.
 788          */
 789         int vblank_disable_allowed;
 790 
 791         wait_queue_head_t       vbl_queue;      /* vbl wait channel */
 792         /* vbl wait channel array */
 793         wait_queue_head_t       *vbl_queues;
 794 
 795         /* number of VBLANK interrupts */
 796         /* (driver must alloc the right number of counters) */
 797         atomic_t          *_vblank_count;
 798         /* signal list to send on VBLANK */
 799         struct drm_vbl_sig_list *vbl_sigs;
 800 
 801         /* number of signals pending on all crtcs */
 802         atomic_t          vbl_signal_pending;
 803         /* number of users of vblank interrupts per crtc */
 804         atomic_t          *vblank_refcount;
 805         /* protected by dev->vbl_lock, used for wraparound handling */
 806         u32               *last_vblank;
 807         /* so we don't call enable more than */
 808         atomic_t          *vblank_enabled;
 809         /* Display driver is setting mode */
 810         int             *vblank_inmodeset;
 811         /* Don't wait while crtc is likely disabled */
 812         int             *vblank_suspend;
 813         /* size of vblank counter register */
 814         u32             max_vblank_count;
 815         int             num_crtcs;
 816         kmutex_t        tasklet_lock;
 817         void (*locked_tasklet_func)(struct drm_device *dev);
 818 
 819         pid_t             buf_pgid;
 820         drm_agp_head_t    *agp;
 821         drm_sg_mem_t      *sg;  /* Scatter gather memory */
 822         uint32_t          *ctx_bitmap;
 823         void              *dev_private;
 824         unsigned int      agp_buffer_token;
 825         drm_local_map_t   *agp_buffer_map;
 826 
 827         kstat_t           *asoft_ksp; /* kstat support */
 828 
 829         /* name Drawable information */
 830         kmutex_t        drw_lock;
 831         unsigned int drw_bitfield_length;
 832         u32 *drw_bitfield;
 833         unsigned int drw_info_length;
 834         drm_drawable_info_t **drw_info;
 835 
 836         /* \name GEM information */
 837         /* @{ */
 838         kmutex_t object_name_lock;
 839         struct idr_list object_name_idr;
 840         atomic_t object_count;
 841         atomic_t object_memory;
 842         atomic_t pin_count;
 843         atomic_t pin_memory;
 844         atomic_t gtt_count;
 845         atomic_t gtt_memory;
 846         uint32_t gtt_total;
 847         uint32_t invalidate_domains;    /* domains pending invalidation */
 848         uint32_t flush_domains; /* domains pending flush */
 849         /* @} */
 850 
 851         /*
 852          * Saving S3 context
 853          */
 854         void              *s3_private;
 855 };
 856 
 857 /* Memory management support (drm_memory.c) */
 858 void    drm_mem_init(void);
 859 void    drm_mem_uninit(void);
 860 void    *drm_alloc(size_t, int);
 861 void    *drm_calloc(size_t, size_t, int);
 862 void    *drm_realloc(void *, size_t, size_t, int);
 863 void    drm_free(void *, size_t, int);
 864 int     drm_ioremap(drm_device_t *, drm_local_map_t *);
 865 void    drm_ioremapfree(drm_local_map_t *);
 866 
 867 void drm_core_ioremap(struct drm_local_map *, struct drm_device *);
 868 void drm_core_ioremapfree(struct drm_local_map *, struct drm_device *);
 869 
 870 void drm_pci_free(drm_device_t *, drm_dma_handle_t *);
 871 void *drm_pci_alloc(drm_device_t *, size_t, size_t, dma_addr_t, int);
 872 
 873 struct drm_local_map *drm_core_findmap(struct drm_device *, unsigned long);
 874 
 875 int     drm_context_switch(drm_device_t *, int, int);
 876 int     drm_context_switch_complete(drm_device_t *, int);
 877 int     drm_ctxbitmap_init(drm_device_t *);
 878 void    drm_ctxbitmap_cleanup(drm_device_t *);
 879 void    drm_ctxbitmap_free(drm_device_t *, int);
 880 int     drm_ctxbitmap_next(drm_device_t *);
 881 
 882 /* Locking IOCTL support (drm_lock.c) */
 883 int     drm_lock_take(drm_lock_data_t *, unsigned int);
 884 int     drm_lock_transfer(drm_device_t *,
 885                         drm_lock_data_t *, unsigned int);
 886 int     drm_lock_free(drm_device_t *,
 887                     volatile unsigned int *, unsigned int);
 888 
 889 /* Buffer management support (drm_bufs.c) */
 890 unsigned long drm_get_resource_start(drm_device_t *, unsigned int);
 891 unsigned long drm_get_resource_len(drm_device_t *, unsigned int);
 892 int     drm_initmap(drm_device_t *, unsigned long, unsigned long,
 893     unsigned int, int, int);
 894 void    drm_rmmap(drm_device_t *, drm_local_map_t *);
 895 int     drm_addmap(drm_device_t *, unsigned long, unsigned long,
 896     drm_map_type_t, drm_map_flags_t, drm_local_map_t **);
 897 int     drm_order(unsigned long);
 898 
 899 /* DMA support (drm_dma.c) */
 900 int     drm_dma_setup(drm_device_t *);
 901 void    drm_dma_takedown(drm_device_t *);
 902 void    drm_free_buffer(drm_device_t *, drm_buf_t *);
 903 void    drm_reclaim_buffers(drm_device_t *, drm_file_t *);
 904 #define drm_core_reclaim_buffers        drm_reclaim_buffers
 905 
 906 /* IRQ support (drm_irq.c) */
 907 int     drm_irq_install(drm_device_t *);
 908 int     drm_irq_uninstall(drm_device_t *);
 909 uint_t  drm_irq_handler(DRM_IRQ_ARGS);
 910 void    drm_driver_irq_preinstall(drm_device_t *);
 911 void    drm_driver_irq_postinstall(drm_device_t *);
 912 void    drm_driver_irq_uninstall(drm_device_t *);
 913 int     drm_vblank_wait(drm_device_t *, unsigned int *);
 914 void    drm_vbl_send_signals(drm_device_t *);
 915 void    drm_handle_vblank(struct drm_device *dev, int crtc);
 916 u32     drm_vblank_count(struct drm_device *dev, int crtc);
 917 int     drm_vblank_get(struct drm_device *dev, int crtc);
 918 void    drm_vblank_put(struct drm_device *dev, int crtc);
 919 int     drm_vblank_init(struct drm_device *dev, int num_crtcs);
 920 void    drm_vblank_cleanup(struct drm_device *dev);
 921 int    drm_modeset_ctl(DRM_IOCTL_ARGS);
 922 
 923 /* AGP/GART support (drm_agpsupport.c) */
 924 int     drm_device_is_agp(drm_device_t *);
 925 int     drm_device_is_pcie(drm_device_t *);
 926 drm_agp_head_t *drm_agp_init(drm_device_t *);
 927 void    drm_agp_fini(drm_device_t *);
 928 int     drm_agp_do_release(drm_device_t *);
 929 void    *drm_agp_allocate_memory(size_t pages,
 930             uint32_t type, drm_device_t *dev);
 931 int     drm_agp_free_memory(agp_allocate_t *handle, drm_device_t *dev);
 932 int     drm_agp_bind_memory(unsigned int, uint32_t, drm_device_t *);
 933 int     drm_agp_unbind_memory(unsigned long, drm_device_t *);
 934 int     drm_agp_bind_pages(drm_device_t *dev,
 935                     pfn_t *pages,
 936                     unsigned long num_pages,
 937                     uint32_t gtt_offset);
 938 int     drm_agp_unbind_pages(drm_device_t *dev,
 939                     unsigned long num_pages,
 940                     uint32_t gtt_offset,
 941                     uint32_t type);
 942 void drm_agp_chipset_flush(struct drm_device *dev);
 943 void drm_agp_rebind(struct drm_device *dev);
 944 
 945 /* kstat support (drm_kstats.c) */
 946 int     drm_init_kstats(drm_device_t *);
 947 void    drm_fini_kstats(drm_device_t *);
 948 
 949 /* Scatter Gather Support (drm_scatter.c) */
 950 void    drm_sg_cleanup(drm_device_t *, drm_sg_mem_t *);
 951 
 952 /* ATI PCIGART support (ati_pcigart.c) */
 953 int     drm_ati_pcigart_init(drm_device_t *, drm_ati_pcigart_info *);
 954 int     drm_ati_pcigart_cleanup(drm_device_t *, drm_ati_pcigart_info *);
 955 
 956 /* Locking IOCTL support (drm_drv.c) */
 957 int     drm_lock(DRM_IOCTL_ARGS);
 958 int     drm_unlock(DRM_IOCTL_ARGS);
 959 int     drm_version(DRM_IOCTL_ARGS);
 960 int     drm_setversion(DRM_IOCTL_ARGS);
 961 /* Cache management (drm_cache.c) */
 962 void drm_clflush_pages(caddr_t *pages, unsigned long num_pages);
 963 
 964 /* Misc. IOCTL support (drm_ioctl.c) */
 965 int     drm_irq_by_busid(DRM_IOCTL_ARGS);
 966 int     drm_getunique(DRM_IOCTL_ARGS);
 967 int     drm_setunique(DRM_IOCTL_ARGS);
 968 int     drm_getmap(DRM_IOCTL_ARGS);
 969 int     drm_getclient(DRM_IOCTL_ARGS);
 970 int     drm_getstats(DRM_IOCTL_ARGS);
 971 int     drm_noop(DRM_IOCTL_ARGS);
 972 
 973 /* Context IOCTL support (drm_context.c) */
 974 int     drm_resctx(DRM_IOCTL_ARGS);
 975 int     drm_addctx(DRM_IOCTL_ARGS);
 976 int     drm_modctx(DRM_IOCTL_ARGS);
 977 int     drm_getctx(DRM_IOCTL_ARGS);
 978 int     drm_switchctx(DRM_IOCTL_ARGS);
 979 int     drm_newctx(DRM_IOCTL_ARGS);
 980 int     drm_rmctx(DRM_IOCTL_ARGS);
 981 int     drm_setsareactx(DRM_IOCTL_ARGS);
 982 int     drm_getsareactx(DRM_IOCTL_ARGS);
 983 
 984 /* Drawable IOCTL support (drm_drawable.c) */
 985 int     drm_adddraw(DRM_IOCTL_ARGS);
 986 int     drm_rmdraw(DRM_IOCTL_ARGS);
 987 int     drm_update_draw(DRM_IOCTL_ARGS);
 988 
 989 /* Authentication IOCTL support (drm_auth.c) */
 990 int     drm_getmagic(DRM_IOCTL_ARGS);
 991 int     drm_authmagic(DRM_IOCTL_ARGS);
 992 int     drm_remove_magic(drm_device_t *, drm_magic_t);
 993 drm_file_t      *drm_find_file(drm_device_t *, drm_magic_t);
 994 /* Buffer management support (drm_bufs.c) */
 995 int     drm_addmap_ioctl(DRM_IOCTL_ARGS);
 996 int     drm_rmmap_ioctl(DRM_IOCTL_ARGS);
 997 int     drm_addbufs_ioctl(DRM_IOCTL_ARGS);
 998 int     drm_infobufs(DRM_IOCTL_ARGS);
 999 int     drm_markbufs(DRM_IOCTL_ARGS);
1000 int     drm_freebufs(DRM_IOCTL_ARGS);
1001 int     drm_mapbufs(DRM_IOCTL_ARGS);
1002 
1003 /* DMA support (drm_dma.c) */
1004 int     drm_dma(DRM_IOCTL_ARGS);
1005 
1006 /* IRQ support (drm_irq.c) */
1007 int     drm_control(DRM_IOCTL_ARGS);
1008 int     drm_wait_vblank(DRM_IOCTL_ARGS);
1009 
1010 /* AGP/GART support (drm_agpsupport.c) */
1011 int     drm_agp_acquire(DRM_IOCTL_ARGS);
1012 int     drm_agp_release(DRM_IOCTL_ARGS);
1013 int     drm_agp_enable(DRM_IOCTL_ARGS);
1014 int     drm_agp_info(DRM_IOCTL_ARGS);
1015 int     drm_agp_alloc(DRM_IOCTL_ARGS);
1016 int     drm_agp_free(DRM_IOCTL_ARGS);
1017 int     drm_agp_unbind(DRM_IOCTL_ARGS);
1018 int     drm_agp_bind(DRM_IOCTL_ARGS);
1019 
1020 /* Scatter Gather Support (drm_scatter.c) */
1021 int     drm_sg_alloc(DRM_IOCTL_ARGS);
1022 int     drm_sg_free(DRM_IOCTL_ARGS);
1023 
1024 /*      drm_mm.c        */
1025 struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent,
1026                                     unsigned long size, unsigned alignment);
1027 struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm,
1028                                     unsigned long size,
1029                                     unsigned alignment, int best_match);
1030 
1031 extern void drm_mm_clean_ml(const struct drm_mm *mm);
1032 extern int drm_debug_flag;
1033 
1034 /* We add function to support DRM_DEBUG,DRM_ERROR,DRM_INFO */
1035 extern void drm_debug(const char *fmt, ...);
1036 extern void drm_error(const char *fmt, ...);
1037 extern void drm_info(const char *fmt, ...);
1038 
1039 #ifdef DEBUG
1040 #define DRM_DEBUG               if (drm_debug_flag >= 2) drm_debug
1041 #define DRM_INFO                if (drm_debug_flag >= 1) drm_info
1042 #else
1043 #define DRM_DEBUG(...)
1044 #define DRM_INFO(...)
1045 #endif
1046 
1047 #define DRM_ERROR               drm_error
1048 
1049 
1050 #define MAX_INSTNUMS 16
1051 
1052 extern int drm_dev_to_instance(dev_t);
1053 extern int drm_dev_to_minor(dev_t);
1054 extern void *drm_supp_register(dev_info_t *, drm_device_t *);
1055 extern int drm_supp_unregister(void *);
1056 
1057 extern int drm_open(drm_device_t *, drm_cminor_t *, int, int, cred_t *);
1058 extern int drm_close(drm_device_t *, int, int, int, cred_t *);
1059 extern int drm_attach(drm_device_t *);
1060 extern int drm_detach(drm_device_t *);
1061 extern int drm_probe(drm_device_t *, drm_pci_id_list_t *);
1062 
1063 extern int drm_pci_init(drm_device_t *);
1064 extern void drm_pci_end(drm_device_t *);
1065 extern int pci_get_info(drm_device_t *, int *, int *, int *);
1066 extern int pci_get_irq(drm_device_t *);
1067 extern int pci_get_vendor(drm_device_t *);
1068 extern int pci_get_device(drm_device_t *);
1069 
1070 extern struct drm_drawable_info *drm_get_drawable_info(drm_device_t *,
1071                                                         drm_drawable_t);
1072 /* File Operations helpers (drm_fops.c) */
1073 extern drm_file_t *drm_find_file_by_proc(drm_device_t *, cred_t *);
1074 extern drm_cminor_t *drm_find_file_by_minor(drm_device_t *, int);
1075 extern int drm_open_helper(drm_device_t *, drm_cminor_t *, int, int,
1076     cred_t *);
1077 
1078 /* Graphics Execution Manager library functions (drm_gem.c) */
1079 int drm_gem_init(struct drm_device *dev);
1080 void drm_gem_object_free(struct drm_gem_object *obj);
1081 struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev,
1082                                             size_t size);
1083 void drm_gem_object_handle_free(struct drm_gem_object *obj);
1084 
1085 void drm_gem_object_reference(struct drm_gem_object *obj);
1086 void drm_gem_object_unreference(struct drm_gem_object *obj);
1087 
1088 int drm_gem_handle_create(struct drm_file *file_priv,
1089                             struct drm_gem_object *obj,
1090                             int *handlep);
1091 void drm_gem_object_handle_reference(struct drm_gem_object *obj);
1092 
1093 void drm_gem_object_handle_unreference(struct drm_gem_object *obj);
1094 
1095 struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp,
1096                                             int handle);
1097 int drm_gem_close_ioctl(DRM_IOCTL_ARGS);
1098 int drm_gem_flink_ioctl(DRM_IOCTL_ARGS);
1099 int drm_gem_open_ioctl(DRM_IOCTL_ARGS);
1100 void drm_gem_open(struct drm_file *file_private);
1101 void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
1102 
1103 
1104 #endif  /* _DRMP_H */