drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

   1 /**************************************************************************
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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  27
  28 #ifndef _VMWGFX_DRV_H_
  29 #define _VMWGFX_DRV_H_
  30
  31 #include "vmwgfx_reg.h"
  32 #include <drm/drmP.h>
  33 #include <drm/vmwgfx_drm.h>
  34 #include <drm/drm_hashtab.h>
  35 #include <linux/suspend.h>
  36 #include <drm/ttm/ttm_bo_driver.h>
  37 #include <drm/ttm/ttm_object.h>
  38 #include <drm/ttm/ttm_lock.h>
  39 #include <drm/ttm/ttm_execbuf_util.h>
  40 #include <drm/ttm/ttm_module.h>
  41 #include "vmwgfx_fence.h"
  42
  43 #define VMWGFX_DRIVER_DATE "20160210"
  44 #define VMWGFX_DRIVER_MAJOR 2
  45 #define VMWGFX_DRIVER_MINOR 10
  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 #define VMWGFX_ENABLE_SCREEN_TARGET_OTABLE 1
  54
  55 /*
  56  * Perhaps we should have sysfs entries for these.
  57  */
  58 #define VMWGFX_NUM_GB_CONTEXT 256
  59 #define VMWGFX_NUM_GB_SHADER 20000
  60 #define VMWGFX_NUM_GB_SURFACE 32768
  61 #define VMWGFX_NUM_GB_SCREEN_TARGET VMWGFX_MAX_DISPLAYS
  62 #define VMWGFX_NUM_DXCONTEXT 256
  63 #define VMWGFX_NUM_DXQUERY 512
  64 #define VMWGFX_NUM_MOB (VMWGFX_NUM_GB_CONTEXT +\
  65                         VMWGFX_NUM_GB_SHADER +\
  66                         VMWGFX_NUM_GB_SURFACE +\
  67                         VMWGFX_NUM_GB_SCREEN_TARGET)
  68
  69 #define VMW_PL_GMR TTM_PL_PRIV0
  70 #define VMW_PL_FLAG_GMR TTM_PL_FLAG_PRIV0
  71 #define VMW_PL_MOB TTM_PL_PRIV1
  72 #define VMW_PL_FLAG_MOB TTM_PL_FLAG_PRIV1
  73
  74 #define VMW_RES_CONTEXT ttm_driver_type0
  75 #define VMW_RES_SURFACE ttm_driver_type1
  76 #define VMW_RES_STREAM ttm_driver_type2
  77 #define VMW_RES_FENCE ttm_driver_type3
  78 #define VMW_RES_SHADER ttm_driver_type4
  79
  80 struct vmw_fpriv {
  81         struct drm_master *locked_master;
  82         struct ttm_object_file *tfile;
  83         bool gb_aware;
  84 };
  85
  86 struct vmw_dma_buffer {
  87         struct ttm_buffer_object base;
  88         struct list_head res_list;
  89         s32 pin_count;
  90         /* Not ref-counted.  Protected by binding_mutex */
  91         struct vmw_resource *dx_query_ctx;
  92 };
  93
  94 /**
  95  * struct vmw_validate_buffer - Carries validation info about buffers.
  96  *
  97  * @base: Validation info for TTM.
  98  * @hash: Hash entry for quick lookup of the TTM buffer object.
  99  *
 100  * This structure contains also driver private validation info
 101  * on top of the info needed by TTM.
 102  */
 103 struct vmw_validate_buffer {
 104         struct ttm_validate_buffer base;
 105         struct drm_hash_item hash;
 106         bool validate_as_mob;
 107 };
 108
 109 struct vmw_res_func;
 110 struct vmw_resource {
 111         struct kref kref;
 112         struct vmw_private *dev_priv;
 113         int id;
 114         bool avail;
 115         unsigned long backup_size;
 116         bool res_dirty; /* Protected by backup buffer reserved */
 117         bool backup_dirty; /* Protected by backup buffer reserved */
 118         struct vmw_dma_buffer *backup;
 119         unsigned long backup_offset;
 120         unsigned long pin_count; /* Protected by resource reserved */
 121         const struct vmw_res_func *func;
 122         struct list_head lru_head; /* Protected by the resource lock */
 123         struct list_head mob_head; /* Protected by @backup reserved */
 124         struct list_head binding_head; /* Protected by binding_mutex */
 125         void (*res_free) (struct vmw_resource *res);
 126         void (*hw_destroy) (struct vmw_resource *res);
 127 };
 128
 129
 130 /*
 131  * Resources that are managed using ioctls.
 132  */
 133 enum vmw_res_type {
 134         vmw_res_context,
 135         vmw_res_surface,
 136         vmw_res_stream,
 137         vmw_res_shader,
 138         vmw_res_dx_context,
 139         vmw_res_cotable,
 140         vmw_res_view,
 141         vmw_res_max
 142 };
 143
 144 /*
 145  * Resources that are managed using command streams.
 146  */
 147 enum vmw_cmdbuf_res_type {
 148         vmw_cmdbuf_res_shader,
 149         vmw_cmdbuf_res_view
 150 };
 151
 152 struct vmw_cmdbuf_res_manager;
 153
 154 struct vmw_cursor_snooper {
 155         struct drm_crtc *crtc;
 156         size_t age;
 157         uint32_t *image;
 158 };
 159
 160 struct vmw_framebuffer;
 161 struct vmw_surface_offset;
 162
 163 struct vmw_surface {
 164         struct vmw_resource res;
 165         uint32_t flags;
 166         uint32_t format;
 167         uint32_t mip_levels[DRM_VMW_MAX_SURFACE_FACES];
 168         struct drm_vmw_size base_size;
 169         struct drm_vmw_size *sizes;
 170         uint32_t num_sizes;
 171         bool scanout;
 172         uint32_t array_size;
 173         /* TODO so far just a extra pointer */
 174         struct vmw_cursor_snooper snooper;
 175         struct vmw_surface_offset *offsets;
 176         SVGA3dTextureFilter autogen_filter;
 177         uint32_t multisample_count;
 178         struct list_head view_list;
 179 };
 180
 181 struct vmw_marker_queue {
 182         struct list_head head;
 183         u64 lag;
 184         u64 lag_time;
 185         spinlock_t lock;
 186 };
 187
 188 struct vmw_fifo_state {
 189         unsigned long reserved_size;
 190         u32 *dynamic_buffer;
 191         u32 *static_buffer;
 192         unsigned long static_buffer_size;
 193         bool using_bounce_buffer;
 194         uint32_t capabilities;
 195         struct mutex fifo_mutex;
 196         struct rw_semaphore rwsem;
 197         struct vmw_marker_queue marker_queue;
 198         bool dx;
 199 };
 200
 201 struct vmw_relocation {
 202         SVGAMobId *mob_loc;
 203         SVGAGuestPtr *location;
 204         uint32_t index;
 205 };
 206
 207 /**
 208  * struct vmw_res_cache_entry - resource information cache entry
 209  *
 210  * @valid: Whether the entry is valid, which also implies that the execbuf
 211  * code holds a reference to the resource, and it's placed on the
 212  * validation list.
 213  * @handle: User-space handle of a resource.
 214  * @res: Non-ref-counted pointer to the resource.
 215  *
 216  * Used to avoid frequent repeated user-space handle lookups of the
 217  * same resource.
 218  */
 219 struct vmw_res_cache_entry {
 220         bool valid;
 221         uint32_t handle;
 222         struct vmw_resource *res;
 223         struct vmw_resource_val_node *node;
 224 };
 225
 226 /**
 227  * enum vmw_dma_map_mode - indicate how to perform TTM page dma mappings.
 228  */
 229 enum vmw_dma_map_mode {
 230         vmw_dma_phys,           /* Use physical page addresses */
 231         vmw_dma_alloc_coherent, /* Use TTM coherent pages */
 232         vmw_dma_map_populate,   /* Unmap from DMA just after unpopulate */
 233         vmw_dma_map_bind,       /* Unmap from DMA just before unbind */
 234         vmw_dma_map_max
 235 };
 236
 237 /**
 238  * struct vmw_sg_table - Scatter/gather table for binding, with additional
 239  * device-specific information.
 240  *
 241  * @sgt: Pointer to a struct sg_table with binding information
 242  * @num_regions: Number of regions with device-address contiguous pages
 243  */
 244 struct vmw_sg_table {
 245         enum vmw_dma_map_mode mode;
 246         struct page **pages;
 247         const dma_addr_t *addrs;
 248         struct sg_table *sgt;
 249         unsigned long num_regions;
 250         unsigned long num_pages;
 251 };
 252
 253 /**
 254  * struct vmw_piter - Page iterator that iterates over a list of pages
 255  * and DMA addresses that could be either a scatter-gather list or
 256  * arrays
 257  *
 258  * @pages: Array of page pointers to the pages.
 259  * @addrs: DMA addresses to the pages if coherent pages are used.
 260  * @iter: Scatter-gather page iterator. Current position in SG list.
 261  * @i: Current position in arrays.
 262  * @num_pages: Number of pages total.
 263  * @next: Function to advance the iterator. Returns false if past the list
 264  * of pages, true otherwise.
 265  * @dma_address: Function to return the DMA address of the current page.
 266  */
 267 struct vmw_piter {
 268         struct page **pages;
 269         const dma_addr_t *addrs;
 270         struct sg_page_iter iter;
 271         unsigned long i;
 272         unsigned long num_pages;
 273         bool (*next)(struct vmw_piter *);
 274         dma_addr_t (*dma_address)(struct vmw_piter *);
 275         struct page *(*page)(struct vmw_piter *);
 276 };
 277
 278 /*
 279  * enum vmw_display_unit_type - Describes the display unit
 280  */
 281 enum vmw_display_unit_type {
 282         vmw_du_invalid = 0,
 283         vmw_du_legacy,
 284         vmw_du_screen_object,
 285         vmw_du_screen_target
 286 };
 287
 288
 289 struct vmw_sw_context{
 290         struct drm_open_hash res_ht;
 291         bool res_ht_initialized;
 292         bool kernel; /**< is the called made from the kernel */
 293         struct vmw_fpriv *fp;
 294         struct list_head validate_nodes;
 295         struct vmw_relocation relocs[VMWGFX_MAX_RELOCATIONS];
 296         uint32_t cur_reloc;
 297         struct vmw_validate_buffer val_bufs[VMWGFX_MAX_VALIDATIONS];
 298         uint32_t cur_val_buf;
 299         uint32_t *cmd_bounce;
 300         uint32_t cmd_bounce_size;
 301         struct list_head resource_list;
 302         struct list_head ctx_resource_list; /* For contexts and cotables */
 303         struct vmw_dma_buffer *cur_query_bo;
 304         struct list_head res_relocations;
 305         uint32_t *buf_start;
 306         struct vmw_res_cache_entry res_cache[vmw_res_max];
 307         struct vmw_resource *last_query_ctx;
 308         bool needs_post_query_barrier;
 309         struct vmw_resource *error_resource;
 310         struct vmw_ctx_binding_state *staged_bindings;
 311         bool staged_bindings_inuse;
 312         struct list_head staged_cmd_res;
 313         struct vmw_resource_val_node *dx_ctx_node;
 314         struct vmw_dma_buffer *dx_query_mob;
 315         struct vmw_resource *dx_query_ctx;
 316         struct vmw_cmdbuf_res_manager *man;
 317 };
 318
 319 struct vmw_legacy_display;
 320 struct vmw_overlay;
 321
 322 struct vmw_master {
 323         struct ttm_lock lock;
 324 };
 325
 326 struct vmw_vga_topology_state {
 327         uint32_t width;
 328         uint32_t height;
 329         uint32_t primary;
 330         uint32_t pos_x;
 331         uint32_t pos_y;
 332 };
 333
 334
 335 /*
 336  * struct vmw_otable - Guest Memory OBject table metadata
 337  *
 338  * @size:           Size of the table (page-aligned).
 339  * @page_table:     Pointer to a struct vmw_mob holding the page table.
 340  */
 341 struct vmw_otable {
 342         unsigned long size;
 343         struct vmw_mob *page_table;
 344         bool enabled;
 345 };
 346
 347 struct vmw_otable_batch {
 348         unsigned num_otables;
 349         struct vmw_otable *otables;
 350         struct vmw_resource *context;
 351         struct ttm_buffer_object *otable_bo;
 352 };
 353
 354 struct vmw_private {
 355         struct ttm_bo_device bdev;
 356         struct ttm_bo_global_ref bo_global_ref;
 357         struct drm_global_reference mem_global_ref;
 358
 359         struct vmw_fifo_state fifo;
 360
 361         struct drm_device *dev;
 362         unsigned long vmw_chipset;
 363         unsigned int io_start;
 364         uint32_t vram_start;
 365         uint32_t vram_size;
 366         uint32_t prim_bb_mem;
 367         uint32_t mmio_start;
 368         uint32_t mmio_size;
 369         uint32_t fb_max_width;
 370         uint32_t fb_max_height;
 371         uint32_t texture_max_width;
 372         uint32_t texture_max_height;
 373         uint32_t stdu_max_width;
 374         uint32_t stdu_max_height;
 375         uint32_t initial_width;
 376         uint32_t initial_height;
 377         u32 *mmio_virt;
 378         uint32_t capabilities;
 379         uint32_t max_gmr_ids;
 380         uint32_t max_gmr_pages;
 381         uint32_t max_mob_pages;
 382         uint32_t max_mob_size;
 383         uint32_t memory_size;
 384         bool has_gmr;
 385         bool has_mob;
 386         spinlock_t hw_lock;
 387         spinlock_t cap_lock;
 388         bool has_dx;
 389
 390         /*
 391          * VGA registers.
 392          */
 393
 394         struct vmw_vga_topology_state vga_save[VMWGFX_MAX_DISPLAYS];
 395         uint32_t vga_width;
 396         uint32_t vga_height;
 397         uint32_t vga_bpp;
 398         uint32_t vga_bpl;
 399         uint32_t vga_pitchlock;
 400
 401         uint32_t num_displays;
 402
 403         /*
 404          * Framebuffer info.
 405          */
 406
 407         void *fb_info;
 408         enum vmw_display_unit_type active_display_unit;
 409         struct vmw_legacy_display *ldu_priv;
 410         struct vmw_overlay *overlay_priv;
 411         struct drm_property *hotplug_mode_update_property;
 412         struct drm_property *implicit_placement_property;
 413         unsigned num_implicit;
 414         struct vmw_framebuffer *implicit_fb;
 415
 416         /*
 417          * Context and surface management.
 418          */
 419
 420         rwlock_t resource_lock;
 421         struct idr res_idr[vmw_res_max];
 422         /*
 423          * Block lastclose from racing with firstopen.
 424          */
 425
 426         struct mutex init_mutex;
 427
 428         /*
 429          * A resource manager for kernel-only surfaces and
 430          * contexts.
 431          */
 432
 433         struct ttm_object_device *tdev;
 434
 435         /*
 436          * Fencing and IRQs.
 437          */
 438
 439         atomic_t marker_seq;
 440         wait_queue_head_t fence_queue;
 441         wait_queue_head_t fifo_queue;
 442         spinlock_t waiter_lock;
 443         int fence_queue_waiters; /* Protected by waiter_lock */
 444         int goal_queue_waiters; /* Protected by waiter_lock */
 445         int cmdbuf_waiters; /* Protected by waiter_lock */
 446         int error_waiters; /* Protected by waiter_lock */
 447         int fifo_queue_waiters; /* Protected by waiter_lock */
 448         uint32_t last_read_seqno;
 449         struct vmw_fence_manager *fman;
 450         uint32_t irq_mask; /* Updates protected by waiter_lock */
 451
 452         /*
 453          * Device state
 454          */
 455
 456         uint32_t traces_state;
 457         uint32_t enable_state;
 458         uint32_t config_done_state;
 459
 460         /**
 461          * Execbuf
 462          */
 463         /**
 464          * Protected by the cmdbuf mutex.
 465          */
 466
 467         struct vmw_sw_context ctx;
 468         struct mutex cmdbuf_mutex;
 469         struct mutex binding_mutex;
 470
 471         /**
 472          * Operating mode.
 473          */
 474
 475         bool stealth;
 476         bool enable_fb;
 477         spinlock_t svga_lock;
 478
 479         /**
 480          * Master management.
 481          */
 482
 483         struct vmw_master *active_master;
 484         struct vmw_master fbdev_master;
 485         struct notifier_block pm_nb;
 486         bool suspended;
 487         bool refuse_hibernation;
 488
 489         struct mutex release_mutex;
 490         atomic_t num_fifo_resources;
 491
 492         /*
 493          * Replace this with an rwsem as soon as we have down_xx_interruptible()
 494          */
 495         struct ttm_lock reservation_sem;
 496
 497         /*
 498          * Query processing. These members
 499          * are protected by the cmdbuf mutex.
 500          */
 501
 502         struct vmw_dma_buffer *dummy_query_bo;
 503         struct vmw_dma_buffer *pinned_bo;
 504         uint32_t query_cid;
 505         uint32_t query_cid_valid;
 506         bool dummy_query_bo_pinned;
 507
 508         /*
 509          * Surface swapping. The "surface_lru" list is protected by the
 510          * resource lock in order to be able to destroy a surface and take
 511          * it off the lru atomically. "used_memory_size" is currently
 512          * protected by the cmdbuf mutex for simplicity.
 513          */
 514
 515         struct list_head res_lru[vmw_res_max];
 516         uint32_t used_memory_size;
 517
 518         /*
 519          * DMA mapping stuff.
 520          */
 521         enum vmw_dma_map_mode map_mode;
 522
 523         /*
 524          * Guest Backed stuff
 525          */
 526         struct vmw_otable_batch otable_batch;
 527
 528         struct vmw_cmdbuf_man *cman;
 529 };
 530
 531 static inline struct vmw_surface *vmw_res_to_srf(struct vmw_resource *res)
 532 {
 533         return container_of(res, struct vmw_surface, res);
 534 }
 535
 536 static inline struct vmw_private *vmw_priv(struct drm_device *dev)
 537 {
 538         return (struct vmw_private *)dev->dev_private;
 539 }
 540
 541 static inline struct vmw_fpriv *vmw_fpriv(struct drm_file *file_priv)
 542 {
 543         return (struct vmw_fpriv *)file_priv->driver_priv;
 544 }
 545
 546 static inline struct vmw_master *vmw_master(struct drm_master *master)
 547 {
 548         return (struct vmw_master *) master->driver_priv;
 549 }
 550
 551 /*
 552  * The locking here is fine-grained, so that it is performed once
 553  * for every read- and write operation. This is of course costly, but we
 554  * don't perform much register access in the timing critical paths anyway.
 555  * Instead we have the extra benefit of being sure that we don't forget
 556  * the hw lock around register accesses.
 557  */
 558 static inline void vmw_write(struct vmw_private *dev_priv,
 559                              unsigned int offset, uint32_t value)
 560 {
 561         unsigned long irq_flags;
 562
 563         spin_lock_irqsave(&dev_priv->hw_lock, irq_flags);
 564         outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
 565         outl(value, dev_priv->io_start + VMWGFX_VALUE_PORT);
 566         spin_unlock_irqrestore(&dev_priv->hw_lock, irq_flags);
 567 }
 568
 569 static inline uint32_t vmw_read(struct vmw_private *dev_priv,
 570                                 unsigned int offset)
 571 {
 572         unsigned long irq_flags;
 573         u32 val;
 574
 575         spin_lock_irqsave(&dev_priv->hw_lock, irq_flags);
 576         outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
 577         val = inl(dev_priv->io_start + VMWGFX_VALUE_PORT);
 578         spin_unlock_irqrestore(&dev_priv->hw_lock, irq_flags);
 579
 580         return val;
 581 }
 582
 583 extern void vmw_svga_enable(struct vmw_private *dev_priv);
 584 extern void vmw_svga_disable(struct vmw_private *dev_priv);
 585
 586
 587 /**
 588  * GMR utilities - vmwgfx_gmr.c
 589  */
 590
 591 extern int vmw_gmr_bind(struct vmw_private *dev_priv,
 592                         const struct vmw_sg_table *vsgt,
 593                         unsigned long num_pages,
 594                         int gmr_id);
 595 extern void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id);
 596
 597 /**
 598  * Resource utilities - vmwgfx_resource.c
 599  */
 600 struct vmw_user_resource_conv;
 601
 602 extern void vmw_resource_unreference(struct vmw_resource **p_res);
 603 extern struct vmw_resource *vmw_resource_reference(struct vmw_resource *res);
 604 extern struct vmw_resource *
 605 vmw_resource_reference_unless_doomed(struct vmw_resource *res);
 606 extern int vmw_resource_validate(struct vmw_resource *res);
 607 extern int vmw_resource_reserve(struct vmw_resource *res, bool interruptible,
 608                                 bool no_backup);
 609 extern bool vmw_resource_needs_backup(const struct vmw_resource *res);
 610 extern int vmw_user_lookup_handle(struct vmw_private *dev_priv,
 611                                   struct ttm_object_file *tfile,
 612                                   uint32_t handle,
 613                                   struct vmw_surface **out_surf,
 614                                   struct vmw_dma_buffer **out_buf);
 615 extern int vmw_user_resource_lookup_handle(
 616         struct vmw_private *dev_priv,
 617         struct ttm_object_file *tfile,
 618         uint32_t handle,
 619         const struct vmw_user_resource_conv *converter,
 620         struct vmw_resource **p_res);
 621 extern void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo);
 622 extern int vmw_dmabuf_init(struct vmw_private *dev_priv,
 623                            struct vmw_dma_buffer *vmw_bo,
 624                            size_t size, struct ttm_placement *placement,
 625                            bool interuptable,
 626                            void (*bo_free) (struct ttm_buffer_object *bo));
 627 extern int vmw_user_dmabuf_verify_access(struct ttm_buffer_object *bo,
 628                                   struct ttm_object_file *tfile);
 629 extern int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
 630                                  struct ttm_object_file *tfile,
 631                                  uint32_t size,
 632                                  bool shareable,
 633                                  uint32_t *handle,
 634                                  struct vmw_dma_buffer **p_dma_buf,
 635                                  struct ttm_base_object **p_base);
 636 extern int vmw_user_dmabuf_reference(struct ttm_object_file *tfile,
 637                                      struct vmw_dma_buffer *dma_buf,
 638                                      uint32_t *handle);
 639 extern int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
 640                                   struct drm_file *file_priv);
 641 extern int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
 642                                   struct drm_file *file_priv);
 643 extern int vmw_user_dmabuf_synccpu_ioctl(struct drm_device *dev, void *data,
 644                                          struct drm_file *file_priv);
 645 extern uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo,
 646                                          uint32_t cur_validate_node);
 647 extern void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo);
 648 extern int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
 649                                   uint32_t id, struct vmw_dma_buffer **out,
 650                                   struct ttm_base_object **base);
 651 extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
 652                                   struct drm_file *file_priv);
 653 extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
 654                                   struct drm_file *file_priv);
 655 extern int vmw_user_stream_lookup(struct vmw_private *dev_priv,
 656                                   struct ttm_object_file *tfile,
 657                                   uint32_t *inout_id,
 658                                   struct vmw_resource **out);
 659 extern void vmw_resource_unreserve(struct vmw_resource *res,
 660                                    bool switch_backup,
 661                                    struct vmw_dma_buffer *new_backup,
 662                                    unsigned long new_backup_offset);
 663 extern void vmw_resource_move_notify(struct ttm_buffer_object *bo,
 664                                      struct ttm_mem_reg *mem);
 665 extern void vmw_query_move_notify(struct ttm_buffer_object *bo,
 666                                   struct ttm_mem_reg *mem);
 667 extern int vmw_query_readback_all(struct vmw_dma_buffer *dx_query_mob);
 668 extern void vmw_fence_single_bo(struct ttm_buffer_object *bo,
 669                                 struct vmw_fence_obj *fence);
 670 extern void vmw_resource_evict_all(struct vmw_private *dev_priv);
 671
 672 /**
 673  * DMA buffer helper routines - vmwgfx_dmabuf.c
 674  */
 675 extern int vmw_dmabuf_pin_in_placement(struct vmw_private *vmw_priv,
 676                                        struct vmw_dma_buffer *bo,
 677                                        struct ttm_placement *placement,
 678                                        bool interruptible);
 679 extern int vmw_dmabuf_pin_in_vram(struct vmw_private *dev_priv,
 680                                   struct vmw_dma_buffer *buf,
 681                                   bool interruptible);
 682 extern int vmw_dmabuf_pin_in_vram_or_gmr(struct vmw_private *dev_priv,
 683                                          struct vmw_dma_buffer *buf,
 684                                          bool interruptible);
 685 extern int vmw_dmabuf_pin_in_start_of_vram(struct vmw_private *vmw_priv,
 686                                            struct vmw_dma_buffer *bo,
 687                                            bool interruptible);
 688 extern int vmw_dmabuf_unpin(struct vmw_private *vmw_priv,
 689                             struct vmw_dma_buffer *bo,
 690                             bool interruptible);
 691 extern void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *buf,
 692                                  SVGAGuestPtr *ptr);
 693 extern void vmw_bo_pin_reserved(struct vmw_dma_buffer *bo, bool pin);
 694
 695 /**
 696  * Misc Ioctl functionality - vmwgfx_ioctl.c
 697  */
 698
 699 extern int vmw_getparam_ioctl(struct drm_device *dev, void *data,
 700                               struct drm_file *file_priv);
 701 extern int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
 702                                 struct drm_file *file_priv);
 703 extern int vmw_present_ioctl(struct drm_device *dev, void *data,
 704                              struct drm_file *file_priv);
 705 extern int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
 706                                       struct drm_file *file_priv);
 707 extern unsigned int vmw_fops_poll(struct file *filp,
 708                                   struct poll_table_struct *wait);
 709 extern ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
 710                              size_t count, loff_t *offset);
 711
 712 /**
 713  * Fifo utilities - vmwgfx_fifo.c
 714  */
 715
 716 extern int vmw_fifo_init(struct vmw_private *dev_priv,
 717                          struct vmw_fifo_state *fifo);
 718 extern void vmw_fifo_release(struct vmw_private *dev_priv,
 719                              struct vmw_fifo_state *fifo);
 720 extern void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes);
 721 extern void *
 722 vmw_fifo_reserve_dx(struct vmw_private *dev_priv, uint32_t bytes, int ctx_id);
 723 extern void vmw_fifo_commit(struct vmw_private *dev_priv, uint32_t bytes);
 724 extern void vmw_fifo_commit_flush(struct vmw_private *dev_priv, uint32_t bytes);
 725 extern int vmw_fifo_send_fence(struct vmw_private *dev_priv,
 726                                uint32_t *seqno);
 727 extern void vmw_fifo_ping_host_locked(struct vmw_private *, uint32_t reason);
 728 extern void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason);
 729 extern bool vmw_fifo_have_3d(struct vmw_private *dev_priv);
 730 extern bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv);
 731 extern int vmw_fifo_emit_dummy_query(struct vmw_private *dev_priv,
 732                                      uint32_t cid);
 733 extern int vmw_fifo_flush(struct vmw_private *dev_priv,
 734                           bool interruptible);
 735
 736 /**
 737  * TTM glue - vmwgfx_ttm_glue.c
 738  */
 739
 740 extern int vmw_ttm_global_init(struct vmw_private *dev_priv);
 741 extern void vmw_ttm_global_release(struct vmw_private *dev_priv);
 742 extern int vmw_mmap(struct file *filp, struct vm_area_struct *vma);
 743
 744 /**
 745  * TTM buffer object driver - vmwgfx_buffer.c
 746  */
 747
 748 extern const size_t vmw_tt_size;
 749 extern struct ttm_placement vmw_vram_placement;
 750 extern struct ttm_placement vmw_vram_ne_placement;
 751 extern struct ttm_placement vmw_vram_sys_placement;
 752 extern struct ttm_placement vmw_vram_gmr_placement;
 753 extern struct ttm_placement vmw_vram_gmr_ne_placement;
 754 extern struct ttm_placement vmw_sys_placement;
 755 extern struct ttm_placement vmw_sys_ne_placement;
 756 extern struct ttm_placement vmw_evictable_placement;
 757 extern struct ttm_placement vmw_srf_placement;
 758 extern struct ttm_placement vmw_mob_placement;
 759 extern struct ttm_placement vmw_mob_ne_placement;
 760 extern struct ttm_bo_driver vmw_bo_driver;
 761 extern int vmw_dma_quiescent(struct drm_device *dev);
 762 extern int vmw_bo_map_dma(struct ttm_buffer_object *bo);
 763 extern void vmw_bo_unmap_dma(struct ttm_buffer_object *bo);
 764 extern const struct vmw_sg_table *
 765 vmw_bo_sg_table(struct ttm_buffer_object *bo);
 766 extern void vmw_piter_start(struct vmw_piter *viter,
 767                             const struct vmw_sg_table *vsgt,
 768                             unsigned long p_offs);
 769
 770 /**
 771  * vmw_piter_next - Advance the iterator one page.
 772  *
 773  * @viter: Pointer to the iterator to advance.
 774  *
 775  * Returns false if past the list of pages, true otherwise.
 776  */
 777 static inline bool vmw_piter_next(struct vmw_piter *viter)
 778 {
 779         return viter->next(viter);
 780 }
 781
 782 /**
 783  * vmw_piter_dma_addr - Return the DMA address of the current page.
 784  *
 785  * @viter: Pointer to the iterator
 786  *
 787  * Returns the DMA address of the page pointed to by @viter.
 788  */
 789 static inline dma_addr_t vmw_piter_dma_addr(struct vmw_piter *viter)
 790 {
 791         return viter->dma_address(viter);
 792 }
 793
 794 /**
 795  * vmw_piter_page - Return a pointer to the current page.
 796  *
 797  * @viter: Pointer to the iterator
 798  *
 799  * Returns the DMA address of the page pointed to by @viter.
 800  */
 801 static inline struct page *vmw_piter_page(struct vmw_piter *viter)
 802 {
 803         return viter->page(viter);
 804 }
 805
 806 /**
 807  * Command submission - vmwgfx_execbuf.c
 808  */
 809
 810 extern int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data,
 811                              struct drm_file *file_priv, size_t size);
 812 extern int vmw_execbuf_process(struct drm_file *file_priv,
 813                                struct vmw_private *dev_priv,
 814                                void __user *user_commands,
 815                                void *kernel_commands,
 816                                uint32_t command_size,
 817                                uint64_t throttle_us,
 818                                uint32_t dx_context_handle,
 819                                struct drm_vmw_fence_rep __user
 820                                *user_fence_rep,
 821                                struct vmw_fence_obj **out_fence);
 822 extern void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
 823                                             struct vmw_fence_obj *fence);
 824 extern void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv);
 825
 826 extern int vmw_execbuf_fence_commands(struct drm_file *file_priv,
 827                                       struct vmw_private *dev_priv,
 828                                       struct vmw_fence_obj **p_fence,
 829                                       uint32_t *p_handle);
 830 extern void vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv,
 831                                         struct vmw_fpriv *vmw_fp,
 832                                         int ret,
 833                                         struct drm_vmw_fence_rep __user
 834                                         *user_fence_rep,
 835                                         struct vmw_fence_obj *fence,
 836                                         uint32_t fence_handle);
 837 extern int vmw_validate_single_buffer(struct vmw_private *dev_priv,
 838                                       struct ttm_buffer_object *bo,
 839                                       bool interruptible,
 840                                       bool validate_as_mob);
 841
 842
 843 /**
 844  * IRQs and wating - vmwgfx_irq.c
 845  */
 846
 847 extern irqreturn_t vmw_irq_handler(int irq, void *arg);
 848 extern int vmw_wait_seqno(struct vmw_private *dev_priv, bool lazy,
 849                           uint32_t seqno, bool interruptible,
 850                           unsigned long timeout);
 851 extern void vmw_irq_preinstall(struct drm_device *dev);
 852 extern int vmw_irq_postinstall(struct drm_device *dev);
 853 extern void vmw_irq_uninstall(struct drm_device *dev);
 854 extern bool vmw_seqno_passed(struct vmw_private *dev_priv,
 855                                 uint32_t seqno);
 856 extern int vmw_fallback_wait(struct vmw_private *dev_priv,
 857                              bool lazy,
 858                              bool fifo_idle,
 859                              uint32_t seqno,
 860                              bool interruptible,
 861                              unsigned long timeout);
 862 extern void vmw_update_seqno(struct vmw_private *dev_priv,
 863                                 struct vmw_fifo_state *fifo_state);
 864 extern void vmw_seqno_waiter_add(struct vmw_private *dev_priv);
 865 extern void vmw_seqno_waiter_remove(struct vmw_private *dev_priv);
 866 extern void vmw_goal_waiter_add(struct vmw_private *dev_priv);
 867 extern void vmw_goal_waiter_remove(struct vmw_private *dev_priv);
 868 extern void vmw_generic_waiter_add(struct vmw_private *dev_priv, u32 flag,
 869                                    int *waiter_count);
 870 extern void vmw_generic_waiter_remove(struct vmw_private *dev_priv,
 871                                       u32 flag, int *waiter_count);
 872
 873 /**
 874  * Rudimentary fence-like objects currently used only for throttling -
 875  * vmwgfx_marker.c
 876  */
 877
 878 extern void vmw_marker_queue_init(struct vmw_marker_queue *queue);
 879 extern void vmw_marker_queue_takedown(struct vmw_marker_queue *queue);
 880 extern int vmw_marker_push(struct vmw_marker_queue *queue,
 881                            uint32_t seqno);
 882 extern int vmw_marker_pull(struct vmw_marker_queue *queue,
 883                            uint32_t signaled_seqno);
 884 extern int vmw_wait_lag(struct vmw_private *dev_priv,
 885                         struct vmw_marker_queue *queue, uint32_t us);
 886
 887 /**
 888  * Kernel framebuffer - vmwgfx_fb.c
 889  */
 890
 891 int vmw_fb_init(struct vmw_private *vmw_priv);
 892 int vmw_fb_close(struct vmw_private *dev_priv);
 893 int vmw_fb_off(struct vmw_private *vmw_priv);
 894 int vmw_fb_on(struct vmw_private *vmw_priv);
 895
 896 /**
 897  * Kernel modesetting - vmwgfx_kms.c
 898  */
 899
 900 int vmw_kms_init(struct vmw_private *dev_priv);
 901 int vmw_kms_close(struct vmw_private *dev_priv);
 902 int vmw_kms_save_vga(struct vmw_private *vmw_priv);
 903 int vmw_kms_restore_vga(struct vmw_private *vmw_priv);
 904 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
 905                                 struct drm_file *file_priv);
 906 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv);
 907 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 908                           struct ttm_object_file *tfile,
 909                           struct ttm_buffer_object *bo,
 910                           SVGA3dCmdHeader *header);
 911 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
 912                        unsigned width, unsigned height, unsigned pitch,
 913                        unsigned bpp, unsigned depth);
 914 void vmw_kms_idle_workqueues(struct vmw_master *vmaster);
 915 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
 916                                 uint32_t pitch,
 917                                 uint32_t height);
 918 u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
 919 int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe);
 920 void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe);
 921 int vmw_kms_present(struct vmw_private *dev_priv,
 922                     struct drm_file *file_priv,
 923                     struct vmw_framebuffer *vfb,
 924                     struct vmw_surface *surface,
 925                     uint32_t sid, int32_t destX, int32_t destY,
 926                     struct drm_vmw_rect *clips,
 927                     uint32_t num_clips);
 928 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
 929                                 struct drm_file *file_priv);
 930 void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv);
 931
 932 int vmw_dumb_create(struct drm_file *file_priv,
 933                     struct drm_device *dev,
 934                     struct drm_mode_create_dumb *args);
 935
 936 int vmw_dumb_map_offset(struct drm_file *file_priv,
 937                         struct drm_device *dev, uint32_t handle,
 938                         uint64_t *offset);
 939 int vmw_dumb_destroy(struct drm_file *file_priv,
 940                      struct drm_device *dev,
 941                      uint32_t handle);
 942 extern int vmw_resource_pin(struct vmw_resource *res, bool interruptible);
 943 extern void vmw_resource_unpin(struct vmw_resource *res);
 944 extern enum vmw_res_type vmw_res_type(const struct vmw_resource *res);
 945
 946 /**
 947  * Overlay control - vmwgfx_overlay.c
 948  */
 949
 950 int vmw_overlay_init(struct vmw_private *dev_priv);
 951 int vmw_overlay_close(struct vmw_private *dev_priv);
 952 int vmw_overlay_ioctl(struct drm_device *dev, void *data,
 953                       struct drm_file *file_priv);
 954 int vmw_overlay_stop_all(struct vmw_private *dev_priv);
 955 int vmw_overlay_resume_all(struct vmw_private *dev_priv);
 956 int vmw_overlay_pause_all(struct vmw_private *dev_priv);
 957 int vmw_overlay_claim(struct vmw_private *dev_priv, uint32_t *out);
 958 int vmw_overlay_unref(struct vmw_private *dev_priv, uint32_t stream_id);
 959 int vmw_overlay_num_overlays(struct vmw_private *dev_priv);
 960 int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv);
 961
 962 /**
 963  * GMR Id manager
 964  */
 965
 966 extern const struct ttm_mem_type_manager_func vmw_gmrid_manager_func;
 967
 968 /**
 969  * Prime - vmwgfx_prime.c
 970  */
 971
 972 extern const struct dma_buf_ops vmw_prime_dmabuf_ops;
 973 extern int vmw_prime_fd_to_handle(struct drm_device *dev,
 974                                   struct drm_file *file_priv,
 975                                   int fd, u32 *handle);
 976 extern int vmw_prime_handle_to_fd(struct drm_device *dev,
 977                                   struct drm_file *file_priv,
 978                                   uint32_t handle, uint32_t flags,
 979                                   int *prime_fd);
 980
 981 /*
 982  * MemoryOBject management -  vmwgfx_mob.c
 983  */
 984 struct vmw_mob;
 985 extern int vmw_mob_bind(struct vmw_private *dev_priv, struct vmw_mob *mob,
 986                         const struct vmw_sg_table *vsgt,
 987                         unsigned long num_data_pages, int32_t mob_id);
 988 extern void vmw_mob_unbind(struct vmw_private *dev_priv,
 989                            struct vmw_mob *mob);
 990 extern void vmw_mob_destroy(struct vmw_mob *mob);
 991 extern struct vmw_mob *vmw_mob_create(unsigned long data_pages);
 992 extern int vmw_otables_setup(struct vmw_private *dev_priv);
 993 extern void vmw_otables_takedown(struct vmw_private *dev_priv);
 994
 995 /*
 996  * Context management - vmwgfx_context.c
 997  */
 998
 999 extern const struct vmw_user_resource_conv *user_context_converter;
1000
1001 extern int vmw_context_check(struct vmw_private *dev_priv,
1002                              struct ttm_object_file *tfile,
1003                              int id,
1004                              struct vmw_resource **p_res);
1005 extern int vmw_context_define_ioctl(struct drm_device *dev, void *data,
1006                                     struct drm_file *file_priv);
1007 extern int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data,
1008                                              struct drm_file *file_priv);
1009 extern int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
1010                                      struct drm_file *file_priv);
1011 extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx);
1012 extern struct vmw_cmdbuf_res_manager *
1013 vmw_context_res_man(struct vmw_resource *ctx);
1014 extern struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx,
1015                                                 SVGACOTableType cotable_type);
1016 extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx);
1017 struct vmw_ctx_binding_state;
1018 extern struct vmw_ctx_binding_state *
1019 vmw_context_binding_state(struct vmw_resource *ctx);
1020 extern void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx,
1021                                           bool readback);
1022 extern int vmw_context_bind_dx_query(struct vmw_resource *ctx_res,
1023                                      struct vmw_dma_buffer *mob);
1024 extern struct vmw_dma_buffer *
1025 vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res);
1026
1027
1028 /*
1029  * Surface management - vmwgfx_surface.c
1030  */
1031
1032 extern const struct vmw_user_resource_conv *user_surface_converter;
1033
1034 extern void vmw_surface_res_free(struct vmw_resource *res);
1035 extern int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
1036                                      struct drm_file *file_priv);
1037 extern int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
1038                                     struct drm_file *file_priv);
1039 extern int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
1040                                        struct drm_file *file_priv);
1041 extern int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
1042                                        struct drm_file *file_priv);
1043 extern int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
1044                                           struct drm_file *file_priv);
1045 extern int vmw_surface_check(struct vmw_private *dev_priv,
1046                              struct ttm_object_file *tfile,
1047                              uint32_t handle, int *id);
1048 extern int vmw_surface_validate(struct vmw_private *dev_priv,
1049                                 struct vmw_surface *srf);
1050 int vmw_surface_gb_priv_define(struct drm_device *dev,
1051                                uint32_t user_accounting_size,
1052                                uint32_t svga3d_flags,
1053                                SVGA3dSurfaceFormat format,
1054                                bool for_scanout,
1055                                uint32_t num_mip_levels,
1056                                uint32_t multisample_count,
1057                                uint32_t array_size,
1058                                struct drm_vmw_size size,
1059                                struct vmw_surface **srf_out);
1060
1061 /*
1062  * Shader management - vmwgfx_shader.c
1063  */
1064
1065 extern const struct vmw_user_resource_conv *user_shader_converter;
1066
1067 extern int vmw_shader_define_ioctl(struct drm_device *dev, void *data,
1068                                    struct drm_file *file_priv);
1069 extern int vmw_shader_destroy_ioctl(struct drm_device *dev, void *data,
1070                                     struct drm_file *file_priv);
1071 extern int vmw_compat_shader_add(struct vmw_private *dev_priv,
1072                                  struct vmw_cmdbuf_res_manager *man,
1073                                  u32 user_key, const void *bytecode,
1074                                  SVGA3dShaderType shader_type,
1075                                  size_t size,
1076                                  struct list_head *list);
1077 extern int vmw_shader_remove(struct vmw_cmdbuf_res_manager *man,
1078                              u32 user_key, SVGA3dShaderType shader_type,
1079                              struct list_head *list);
1080 extern int vmw_dx_shader_add(struct vmw_cmdbuf_res_manager *man,
1081                              struct vmw_resource *ctx,
1082                              u32 user_key,
1083                              SVGA3dShaderType shader_type,
1084                              struct list_head *list);
1085 extern void vmw_dx_shader_cotable_list_scrub(struct vmw_private *dev_priv,
1086                                              struct list_head *list,
1087                                              bool readback);
1088
1089 extern struct vmw_resource *
1090 vmw_shader_lookup(struct vmw_cmdbuf_res_manager *man,
1091                   u32 user_key, SVGA3dShaderType shader_type);
1092
1093 /*
1094  * Command buffer managed resources - vmwgfx_cmdbuf_res.c
1095  */
1096
1097 extern struct vmw_cmdbuf_res_manager *
1098 vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv);
1099 extern void vmw_cmdbuf_res_man_destroy(struct vmw_cmdbuf_res_manager *man);
1100 extern size_t vmw_cmdbuf_res_man_size(void);
1101 extern struct vmw_resource *
1102 vmw_cmdbuf_res_lookup(struct vmw_cmdbuf_res_manager *man,
1103                       enum vmw_cmdbuf_res_type res_type,
1104                       u32 user_key);
1105 extern void vmw_cmdbuf_res_revert(struct list_head *list);
1106 extern void vmw_cmdbuf_res_commit(struct list_head *list);
1107 extern int vmw_cmdbuf_res_add(struct vmw_cmdbuf_res_manager *man,
1108                               enum vmw_cmdbuf_res_type res_type,
1109                               u32 user_key,
1110                               struct vmw_resource *res,
1111                               struct list_head *list);
1112 extern int vmw_cmdbuf_res_remove(struct vmw_cmdbuf_res_manager *man,
1113                                  enum vmw_cmdbuf_res_type res_type,
1114                                  u32 user_key,
1115                                  struct list_head *list,
1116                                  struct vmw_resource **res);
1117
1118 /*
1119  * COTable management - vmwgfx_cotable.c
1120  */
1121 extern const SVGACOTableType vmw_cotable_scrub_order[];
1122 extern struct vmw_resource *vmw_cotable_alloc(struct vmw_private *dev_priv,
1123                                               struct vmw_resource *ctx,
1124                                               u32 type);
1125 extern int vmw_cotable_notify(struct vmw_resource *res, int id);
1126 extern int vmw_cotable_scrub(struct vmw_resource *res, bool readback);
1127 extern void vmw_cotable_add_resource(struct vmw_resource *ctx,
1128                                      struct list_head *head);
1129
1130 /*
1131  * Command buffer managerment vmwgfx_cmdbuf.c
1132  */
1133 struct vmw_cmdbuf_man;
1134 struct vmw_cmdbuf_header;
1135
1136 extern struct vmw_cmdbuf_man *
1137 vmw_cmdbuf_man_create(struct vmw_private *dev_priv);
1138 extern int vmw_cmdbuf_set_pool_size(struct vmw_cmdbuf_man *man,
1139                                     size_t size, size_t default_size);
1140 extern void vmw_cmdbuf_remove_pool(struct vmw_cmdbuf_man *man);
1141 extern void vmw_cmdbuf_man_destroy(struct vmw_cmdbuf_man *man);
1142 extern int vmw_cmdbuf_idle(struct vmw_cmdbuf_man *man, bool interruptible,
1143                            unsigned long timeout);
1144 extern void *vmw_cmdbuf_reserve(struct vmw_cmdbuf_man *man, size_t size,
1145                                 int ctx_id, bool interruptible,
1146                                 struct vmw_cmdbuf_header *header);
1147 extern void vmw_cmdbuf_commit(struct vmw_cmdbuf_man *man, size_t size,
1148                               struct vmw_cmdbuf_header *header,
1149                               bool flush);
1150 extern void vmw_cmdbuf_tasklet_schedule(struct vmw_cmdbuf_man *man);
1151 extern void *vmw_cmdbuf_alloc(struct vmw_cmdbuf_man *man,
1152                               size_t size, bool interruptible,
1153                               struct vmw_cmdbuf_header **p_header);
1154 extern void vmw_cmdbuf_header_free(struct vmw_cmdbuf_header *header);
1155 extern int vmw_cmdbuf_cur_flush(struct vmw_cmdbuf_man *man,
1156                                 bool interruptible);
1157
1158
1159 /**
1160  * Inline helper functions
1161  */
1162
1163 static inline void vmw_surface_unreference(struct vmw_surface **srf)
1164 {
1165         struct vmw_surface *tmp_srf = *srf;
1166         struct vmw_resource *res = &tmp_srf->res;
1167         *srf = NULL;
1168
1169         vmw_resource_unreference(&res);
1170 }
1171
1172 static inline struct vmw_surface *vmw_surface_reference(struct vmw_surface *srf)
1173 {
1174         (void) vmw_resource_reference(&srf->res);
1175         return srf;
1176 }
1177
1178 static inline void vmw_dmabuf_unreference(struct vmw_dma_buffer **buf)
1179 {
1180         struct vmw_dma_buffer *tmp_buf = *buf;
1181
1182         *buf = NULL;
1183         if (tmp_buf != NULL) {
1184                 struct ttm_buffer_object *bo = &tmp_buf->base;
1185
1186                 ttm_bo_unref(&bo);
1187         }
1188 }
1189
1190 static inline struct vmw_dma_buffer *vmw_dmabuf_reference(struct vmw_dma_buffer *buf)
1191 {
1192         if (ttm_bo_reference(&buf->base))
1193                 return buf;
1194         return NULL;
1195 }
1196
1197 static inline struct ttm_mem_global *vmw_mem_glob(struct vmw_private *dev_priv)
1198 {
1199         return (struct ttm_mem_global *) dev_priv->mem_global_ref.object;
1200 }
1201
1202 static inline void vmw_fifo_resource_inc(struct vmw_private *dev_priv)
1203 {
1204         atomic_inc(&dev_priv->num_fifo_resources);
1205 }
1206
1207 static inline void vmw_fifo_resource_dec(struct vmw_private *dev_priv)
1208 {
1209         atomic_dec(&dev_priv->num_fifo_resources);
1210 }
1211
1212 /**
1213  * vmw_mmio_read - Perform a MMIO read from volatile memory
1214  *
1215  * @addr: The address to read from
1216  *
1217  * This function is intended to be equivalent to ioread32() on
1218  * memremap'd memory, but without byteswapping.
1219  */
1220 static inline u32 vmw_mmio_read(u32 *addr)
1221 {
1222         return READ_ONCE(*addr);
1223 }
1224
1225 /**
1226  * vmw_mmio_write - Perform a MMIO write to volatile memory
1227  *
1228  * @addr: The address to write to
1229  *
1230  * This function is intended to be equivalent to iowrite32 on
1231  * memremap'd memory, but without byteswapping.
1232  */
1233 static inline void vmw_mmio_write(u32 value, u32 *addr)
1234 {
1235         WRITE_ONCE(*addr, value);
1236 }
1237 #endif