drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef _VMWGFX_DRV_H_
  29 #define _VMWGFX_DRV_H_
  30
  31 #include "vmwgfx_reg.h"
  32 #include "drmP.h"
  33 #include "vmwgfx_drm.h"
  34 #include "drm_hashtab.h"
  35 #include "linux/suspend.h"
  36 #include "ttm/ttm_bo_driver.h"
  37 #include "ttm/ttm_object.h"
  38 #include "ttm/ttm_lock.h"
  39 #include "ttm/ttm_execbuf_util.h"
  40 #include "ttm/ttm_module.h"
  41 #include "vmwgfx_fence.h"
  42
  43 #define VMWGFX_DRIVER_DATE "20110901"
  44 #define VMWGFX_DRIVER_MAJOR 2
  45 #define VMWGFX_DRIVER_MINOR 0
  46 #define VMWGFX_DRIVER_PATCHLEVEL 0
  47 #define VMWGFX_FILE_PAGE_OFFSET 0x00100000
  48 #define VMWGFX_FIFO_STATIC_SIZE (1024*1024)
  49 #define VMWGFX_MAX_RELOCATIONS 2048
  50 #define VMWGFX_MAX_VALIDATIONS 2048
  51 #define VMWGFX_MAX_DISPLAYS 16
  52 #define VMWGFX_CMD_BOUNCE_INIT_SIZE 32768
  53
  54 #define VMW_PL_GMR TTM_PL_PRIV0
  55 #define VMW_PL_FLAG_GMR TTM_PL_FLAG_PRIV0
  56
  57 #define VMW_RES_CONTEXT ttm_driver_type0
  58 #define VMW_RES_SURFACE ttm_driver_type1
  59 #define VMW_RES_STREAM ttm_driver_type2
  60 #define VMW_RES_FENCE ttm_driver_type3
  61
  62 struct vmw_fpriv {
  63         struct drm_master *locked_master;
  64         struct ttm_object_file *tfile;
  65 };
  66
  67 struct vmw_dma_buffer {
  68         struct ttm_buffer_object base;
  69         struct list_head validate_list;
  70         bool gmr_bound;
  71         uint32_t cur_validate_node;
  72         bool on_validate_list;
  73 };
  74
  75 struct vmw_resource {
  76         struct kref kref;
  77         struct vmw_private *dev_priv;
  78         struct idr *idr;
  79         int id;
  80         enum ttm_object_type res_type;
  81         bool avail;
  82         void (*hw_destroy) (struct vmw_resource *res);
  83         void (*res_free) (struct vmw_resource *res);
  84         bool on_validate_list;
  85         /* TODO is a generic snooper needed? */
  86 #if 0
  87         void (*snoop)(struct vmw_resource *res,
  88                       struct ttm_object_file *tfile,
  89                       SVGA3dCmdHeader *header);
  90         void *snoop_priv;
  91 #endif
  92 };
  93
  94 struct vmw_cursor_snooper {
  95         struct drm_crtc *crtc;
  96         size_t age;
  97         uint32_t *image;
  98 };
  99
 100 struct vmw_surface {
 101         struct vmw_resource res;
 102         uint32_t flags;
 103         uint32_t format;
 104         uint32_t mip_levels[DRM_VMW_MAX_SURFACE_FACES];
 105         struct drm_vmw_size *sizes;
 106         uint32_t num_sizes;
 107
 108         bool scanout;
 109
 110         /* TODO so far just a extra pointer */
 111         struct vmw_cursor_snooper snooper;
 112 };
 113
 114 struct vmw_marker_queue {
 115         struct list_head head;
 116         struct timespec lag;
 117         struct timespec lag_time;
 118         spinlock_t lock;
 119 };
 120
 121 struct vmw_fifo_state {
 122         unsigned long reserved_size;
 123         __le32 *dynamic_buffer;
 124         __le32 *static_buffer;
 125         unsigned long static_buffer_size;
 126         bool using_bounce_buffer;
 127         uint32_t capabilities;
 128         struct mutex fifo_mutex;
 129         struct rw_semaphore rwsem;
 130         struct vmw_marker_queue marker_queue;
 131 };
 132
 133 struct vmw_relocation {
 134         SVGAGuestPtr *location;
 135         uint32_t index;
 136 };
 137
 138 struct vmw_sw_context{
 139         struct ida bo_list;
 140         uint32_t last_cid;
 141         bool cid_valid;
 142         bool kernel; /**< is the called made from the kernel */
 143         uint32_t last_sid;
 144         uint32_t sid_translation;
 145         bool sid_valid;
 146         struct ttm_object_file *tfile;
 147         struct list_head validate_nodes;
 148         struct vmw_relocation relocs[VMWGFX_MAX_RELOCATIONS];
 149         uint32_t cur_reloc;
 150         struct ttm_validate_buffer val_bufs[VMWGFX_MAX_VALIDATIONS];
 151         uint32_t cur_val_buf;
 152         uint32_t *cmd_bounce;
 153         uint32_t cmd_bounce_size;
 154         struct vmw_resource *resources[VMWGFX_MAX_VALIDATIONS];
 155         uint32_t num_ref_resources;
 156 };
 157
 158 struct vmw_legacy_display;
 159 struct vmw_overlay;
 160
 161 struct vmw_master {
 162         struct ttm_lock lock;
 163         struct mutex fb_surf_mutex;
 164         struct list_head fb_surf;
 165 };
 166
 167 struct vmw_vga_topology_state {
 168         uint32_t width;
 169         uint32_t height;
 170         uint32_t primary;
 171         uint32_t pos_x;
 172         uint32_t pos_y;
 173 };
 174
 175 struct vmw_private {
 176         struct ttm_bo_device bdev;
 177         struct ttm_bo_global_ref bo_global_ref;
 178         struct drm_global_reference mem_global_ref;
 179
 180         struct vmw_fifo_state fifo;
 181
 182         struct drm_device *dev;
 183         unsigned long vmw_chipset;
 184         unsigned int io_start;
 185         uint32_t vram_start;
 186         uint32_t vram_size;
 187         uint32_t mmio_start;
 188         uint32_t mmio_size;
 189         uint32_t fb_max_width;
 190         uint32_t fb_max_height;
 191         __le32 __iomem *mmio_virt;
 192         int mmio_mtrr;
 193         uint32_t capabilities;
 194         uint32_t max_gmr_descriptors;
 195         uint32_t max_gmr_ids;
 196         uint32_t max_gmr_pages;
 197         uint32_t memory_size;
 198         bool has_gmr;
 199         struct mutex hw_mutex;
 200
 201         /*
 202          * VGA registers.
 203          */
 204
 205         struct vmw_vga_topology_state vga_save[VMWGFX_MAX_DISPLAYS];
 206         uint32_t vga_width;
 207         uint32_t vga_height;
 208         uint32_t vga_bpp;
 209         uint32_t vga_bpl;
 210         uint32_t vga_pitchlock;
 211
 212         uint32_t num_displays;
 213
 214         /*
 215          * Framebuffer info.
 216          */
 217
 218         void *fb_info;
 219         struct vmw_legacy_display *ldu_priv;
 220         struct vmw_overlay *overlay_priv;
 221
 222         /*
 223          * Context and surface management.
 224          */
 225
 226         rwlock_t resource_lock;
 227         struct idr context_idr;
 228         struct idr surface_idr;
 229         struct idr stream_idr;
 230
 231         /*
 232          * Block lastclose from racing with firstopen.
 233          */
 234
 235         struct mutex init_mutex;
 236
 237         /*
 238          * A resource manager for kernel-only surfaces and
 239          * contexts.
 240          */
 241
 242         struct ttm_object_device *tdev;
 243
 244         /*
 245          * Fencing and IRQs.
 246          */
 247
 248         atomic_t marker_seq;
 249         wait_queue_head_t fence_queue;
 250         wait_queue_head_t fifo_queue;
 251         int fence_queue_waiters; /* Protected by hw_mutex */
 252         atomic_t fifo_queue_waiters;
 253         uint32_t last_read_seqno;
 254         spinlock_t irq_lock;
 255         struct vmw_fence_manager *fman;
 256
 257         /*
 258          * Device state
 259          */
 260
 261         uint32_t traces_state;
 262         uint32_t enable_state;
 263         uint32_t config_done_state;
 264
 265         /**
 266          * Execbuf
 267          */
 268         /**
 269          * Protected by the cmdbuf mutex.
 270          */
 271
 272         struct vmw_sw_context ctx;
 273         struct mutex cmdbuf_mutex;
 274
 275         /**
 276          * Operating mode.
 277          */
 278
 279         bool stealth;
 280         bool is_opened;
 281         bool enable_fb;
 282
 283         /**
 284          * Master management.
 285          */
 286
 287         struct vmw_master *active_master;
 288         struct vmw_master fbdev_master;
 289         struct notifier_block pm_nb;
 290         bool suspended;
 291
 292         struct mutex release_mutex;
 293         uint32_t num_3d_resources;
 294 };
 295
 296 static inline struct vmw_private *vmw_priv(struct drm_device *dev)
 297 {
 298         return (struct vmw_private *)dev->dev_private;
 299 }
 300
 301 static inline struct vmw_fpriv *vmw_fpriv(struct drm_file *file_priv)
 302 {
 303         return (struct vmw_fpriv *)file_priv->driver_priv;
 304 }
 305
 306 static inline struct vmw_master *vmw_master(struct drm_master *master)
 307 {
 308         return (struct vmw_master *) master->driver_priv;
 309 }
 310
 311 static inline void vmw_write(struct vmw_private *dev_priv,
 312                              unsigned int offset, uint32_t value)
 313 {
 314         outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
 315         outl(value, dev_priv->io_start + VMWGFX_VALUE_PORT);
 316 }
 317
 318 static inline uint32_t vmw_read(struct vmw_private *dev_priv,
 319                                 unsigned int offset)
 320 {
 321         uint32_t val;
 322
 323         outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
 324         val = inl(dev_priv->io_start + VMWGFX_VALUE_PORT);
 325         return val;
 326 }
 327
 328 int vmw_3d_resource_inc(struct vmw_private *dev_priv, bool unhide_svga);
 329 void vmw_3d_resource_dec(struct vmw_private *dev_priv, bool hide_svga);
 330
 331 /**
 332  * GMR utilities - vmwgfx_gmr.c
 333  */
 334
 335 extern int vmw_gmr_bind(struct vmw_private *dev_priv,
 336                         struct page *pages[],
 337                         unsigned long num_pages,
 338                         int gmr_id);
 339 extern void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id);
 340
 341 /**
 342  * Resource utilities - vmwgfx_resource.c
 343  */
 344
 345 extern struct vmw_resource *vmw_context_alloc(struct vmw_private *dev_priv);
 346 extern void vmw_resource_unreference(struct vmw_resource **p_res);
 347 extern struct vmw_resource *vmw_resource_reference(struct vmw_resource *res);
 348 extern int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
 349                                      struct drm_file *file_priv);
 350 extern int vmw_context_define_ioctl(struct drm_device *dev, void *data,
 351                                     struct drm_file *file_priv);
 352 extern int vmw_context_check(struct vmw_private *dev_priv,
 353                              struct ttm_object_file *tfile,
 354                              int id,
 355                              struct vmw_resource **p_res);
 356 extern void vmw_surface_res_free(struct vmw_resource *res);
 357 extern int vmw_surface_init(struct vmw_private *dev_priv,
 358                             struct vmw_surface *srf,
 359                             void (*res_free) (struct vmw_resource *res));
 360 extern int vmw_user_surface_lookup_handle(struct vmw_private *dev_priv,
 361                                           struct ttm_object_file *tfile,
 362                                           uint32_t handle,
 363                                           struct vmw_surface **out);
 364 extern int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
 365                                      struct drm_file *file_priv);
 366 extern int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
 367                                     struct drm_file *file_priv);
 368 extern int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
 369                                        struct drm_file *file_priv);
 370 extern int vmw_surface_check(struct vmw_private *dev_priv,
 371                              struct ttm_object_file *tfile,
 372                              uint32_t handle, int *id);
 373 extern void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo);
 374 extern int vmw_dmabuf_init(struct vmw_private *dev_priv,
 375                            struct vmw_dma_buffer *vmw_bo,
 376                            size_t size, struct ttm_placement *placement,
 377                            bool interuptable,
 378                            void (*bo_free) (struct ttm_buffer_object *bo));
 379 extern int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
 380                                   struct drm_file *file_priv);
 381 extern int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
 382                                   struct drm_file *file_priv);
 383 extern uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo,
 384                                          uint32_t cur_validate_node);
 385 extern void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo);
 386 extern int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
 387                                   uint32_t id, struct vmw_dma_buffer **out);
 388 extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
 389                                   struct drm_file *file_priv);
 390 extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
 391                                   struct drm_file *file_priv);
 392 extern int vmw_user_stream_lookup(struct vmw_private *dev_priv,
 393                                   struct ttm_object_file *tfile,
 394                                   uint32_t *inout_id,
 395                                   struct vmw_resource **out);
 396
 397 /**
 398  * DMA buffer helper routines - vmwgfx_dmabuf.c
 399  */
 400 extern int vmw_dmabuf_to_placement(struct vmw_private *vmw_priv,
 401                                    struct vmw_dma_buffer *bo,
 402                                    struct ttm_placement *placement,
 403                                    bool interruptible);
 404 extern int vmw_dmabuf_to_vram(struct vmw_private *dev_priv,
 405                               struct vmw_dma_buffer *buf,
 406                               bool pin, bool interruptible);
 407 extern int vmw_dmabuf_to_vram_or_gmr(struct vmw_private *dev_priv,
 408                                      struct vmw_dma_buffer *buf,
 409                                      bool pin, bool interruptible);
 410 extern int vmw_dmabuf_to_start_of_vram(struct vmw_private *vmw_priv,
 411                                        struct vmw_dma_buffer *bo,
 412                                        bool pin, bool interruptible);
 413 extern int vmw_dmabuf_unpin(struct vmw_private *vmw_priv,
 414                             struct vmw_dma_buffer *bo,
 415                             bool interruptible);
 416 extern int vmw_dmabuf_to_system(struct vmw_private *vmw_priv,
 417                                 struct vmw_dma_buffer *bo,
 418                                 bool interruptible);
 419 extern void vmw_dmabuf_get_id_offset(struct vmw_dma_buffer *buf,
 420                                      uint32_t *gmrId, uint32_t *offset);
 421 extern void vmw_dmabuf_get_guest_ptr(struct vmw_dma_buffer *buf,
 422                                      SVGAGuestPtr *ptr);
 423
 424 /**
 425  * Misc Ioctl functionality - vmwgfx_ioctl.c
 426  */
 427
 428 extern int vmw_getparam_ioctl(struct drm_device *dev, void *data,
 429                               struct drm_file *file_priv);
 430 extern int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
 431                                 struct drm_file *file_priv);
 432
 433 /**
 434  * Fifo utilities - vmwgfx_fifo.c
 435  */
 436
 437 extern int vmw_fifo_init(struct vmw_private *dev_priv,
 438                          struct vmw_fifo_state *fifo);
 439 extern void vmw_fifo_release(struct vmw_private *dev_priv,
 440                              struct vmw_fifo_state *fifo);
 441 extern void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes);
 442 extern void vmw_fifo_commit(struct vmw_private *dev_priv, uint32_t bytes);
 443 extern int vmw_fifo_send_fence(struct vmw_private *dev_priv,
 444                                uint32_t *seqno);
 445 extern void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason);
 446 extern bool vmw_fifo_have_3d(struct vmw_private *dev_priv);
 447 extern bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv);
 448
 449 /**
 450  * TTM glue - vmwgfx_ttm_glue.c
 451  */
 452
 453 extern int vmw_ttm_global_init(struct vmw_private *dev_priv);
 454 extern void vmw_ttm_global_release(struct vmw_private *dev_priv);
 455 extern int vmw_mmap(struct file *filp, struct vm_area_struct *vma);
 456
 457 /**
 458  * TTM buffer object driver - vmwgfx_buffer.c
 459  */
 460
 461 extern struct ttm_placement vmw_vram_placement;
 462 extern struct ttm_placement vmw_vram_ne_placement;
 463 extern struct ttm_placement vmw_vram_sys_placement;
 464 extern struct ttm_placement vmw_vram_gmr_placement;
 465 extern struct ttm_placement vmw_vram_gmr_ne_placement;
 466 extern struct ttm_placement vmw_sys_placement;
 467 extern struct ttm_placement vmw_evictable_placement;
 468 extern struct ttm_bo_driver vmw_bo_driver;
 469 extern int vmw_dma_quiescent(struct drm_device *dev);
 470
 471 /**
 472  * Command submission - vmwgfx_execbuf.c
 473  */
 474
 475 extern int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
 476                              struct drm_file *file_priv);
 477 extern int vmw_execbuf_process(struct drm_file *file_priv,
 478                                struct vmw_private *dev_priv,
 479                                void __user *user_commands,
 480                                void *kernel_commands,
 481                                uint32_t command_size,
 482                                uint64_t throttle_us,
 483                                struct drm_vmw_fence_rep __user
 484                                *user_fence_rep);
 485
 486 /**
 487  * IRQs and wating - vmwgfx_irq.c
 488  */
 489
 490 extern irqreturn_t vmw_irq_handler(DRM_IRQ_ARGS);
 491 extern int vmw_wait_seqno(struct vmw_private *dev_priv, bool lazy,
 492                              uint32_t seqno, bool interruptible,
 493                              unsigned long timeout);
 494 extern void vmw_irq_preinstall(struct drm_device *dev);
 495 extern int vmw_irq_postinstall(struct drm_device *dev);
 496 extern void vmw_irq_uninstall(struct drm_device *dev);
 497 extern bool vmw_seqno_passed(struct vmw_private *dev_priv,
 498                                 uint32_t seqno);
 499 extern int vmw_fallback_wait(struct vmw_private *dev_priv,
 500                              bool lazy,
 501                              bool fifo_idle,
 502                              uint32_t seqno,
 503                              bool interruptible,
 504                              unsigned long timeout);
 505 extern void vmw_update_seqno(struct vmw_private *dev_priv,
 506                                 struct vmw_fifo_state *fifo_state);
 507 extern void vmw_seqno_waiter_add(struct vmw_private *dev_priv);
 508 extern void vmw_seqno_waiter_remove(struct vmw_private *dev_priv);
 509
 510 /**
 511  * Rudimentary fence-like objects currently used only for throttling -
 512  * vmwgfx_marker.c
 513  */
 514
 515 extern void vmw_marker_queue_init(struct vmw_marker_queue *queue);
 516 extern void vmw_marker_queue_takedown(struct vmw_marker_queue *queue);
 517 extern int vmw_marker_push(struct vmw_marker_queue *queue,
 518                           uint32_t seqno);
 519 extern int vmw_marker_pull(struct vmw_marker_queue *queue,
 520                           uint32_t signaled_seqno);
 521 extern int vmw_wait_lag(struct vmw_private *dev_priv,
 522                         struct vmw_marker_queue *queue, uint32_t us);
 523
 524 /**
 525  * Kernel framebuffer - vmwgfx_fb.c
 526  */
 527
 528 int vmw_fb_init(struct vmw_private *vmw_priv);
 529 int vmw_fb_close(struct vmw_private *dev_priv);
 530 int vmw_fb_off(struct vmw_private *vmw_priv);
 531 int vmw_fb_on(struct vmw_private *vmw_priv);
 532
 533 /**
 534  * Kernel modesetting - vmwgfx_kms.c
 535  */
 536
 537 int vmw_kms_init(struct vmw_private *dev_priv);
 538 int vmw_kms_close(struct vmw_private *dev_priv);
 539 int vmw_kms_save_vga(struct vmw_private *vmw_priv);
 540 int vmw_kms_restore_vga(struct vmw_private *vmw_priv);
 541 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
 542                                 struct drm_file *file_priv);
 543 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv);
 544 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 545                           struct ttm_object_file *tfile,
 546                           struct ttm_buffer_object *bo,
 547                           SVGA3dCmdHeader *header);
 548 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
 549                        unsigned width, unsigned height, unsigned pitch,
 550                        unsigned bpp, unsigned depth);
 551 void vmw_kms_idle_workqueues(struct vmw_master *vmaster);
 552 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
 553                                 uint32_t pitch,
 554                                 uint32_t height);
 555 u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc);
 556
 557 /**
 558  * Overlay control - vmwgfx_overlay.c
 559  */
 560
 561 int vmw_overlay_init(struct vmw_private *dev_priv);
 562 int vmw_overlay_close(struct vmw_private *dev_priv);
 563 int vmw_overlay_ioctl(struct drm_device *dev, void *data,
 564                       struct drm_file *file_priv);
 565 int vmw_overlay_stop_all(struct vmw_private *dev_priv);
 566 int vmw_overlay_resume_all(struct vmw_private *dev_priv);
 567 int vmw_overlay_pause_all(struct vmw_private *dev_priv);
 568 int vmw_overlay_claim(struct vmw_private *dev_priv, uint32_t *out);
 569 int vmw_overlay_unref(struct vmw_private *dev_priv, uint32_t stream_id);
 570 int vmw_overlay_num_overlays(struct vmw_private *dev_priv);
 571 int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv);
 572
 573 /**
 574  * GMR Id manager
 575  */
 576
 577 extern const struct ttm_mem_type_manager_func vmw_gmrid_manager_func;
 578
 579 /**
 580  * Inline helper functions
 581  */
 582
 583 static inline void vmw_surface_unreference(struct vmw_surface **srf)
 584 {
 585         struct vmw_surface *tmp_srf = *srf;
 586         struct vmw_resource *res = &tmp_srf->res;
 587         *srf = NULL;
 588
 589         vmw_resource_unreference(&res);
 590 }
 591
 592 static inline struct vmw_surface *vmw_surface_reference(struct vmw_surface *srf)
 593 {
 594         (void) vmw_resource_reference(&srf->res);
 595         return srf;
 596 }
 597
 598 static inline void vmw_dmabuf_unreference(struct vmw_dma_buffer **buf)
 599 {
 600         struct vmw_dma_buffer *tmp_buf = *buf;
 601         struct ttm_buffer_object *bo = &tmp_buf->base;
 602         *buf = NULL;
 603
 604         ttm_bo_unref(&bo);
 605 }
 606
 607 static inline struct vmw_dma_buffer *vmw_dmabuf_reference(struct vmw_dma_buffer *buf)
 608 {
 609         if (ttm_bo_reference(&buf->base))
 610                 return buf;
 611         return NULL;
 612 }
 613
 614 static inline struct ttm_mem_global *vmw_mem_glob(struct vmw_private *dev_priv)
 615 {
 616         return (struct ttm_mem_global *) dev_priv->mem_global_ref.object;
 617 }
 618 #endif