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 "20150810"
  44 #define VMWGFX_DRIVER_MAJOR 2
  45 #define VMWGFX_DRIVER_MINOR 9
  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         struct list_head fence_events;
  84         bool gb_aware;
  85 };
  86
  87 struct vmw_dma_buffer {
  88         struct ttm_buffer_object base;
  89         struct list_head res_list;
  90         s32 pin_count;
  91         /* Not ref-counted.  Protected by binding_mutex */
  92         struct vmw_resource *dx_query_ctx;
  93 };
  94
  95 /**
  96  * struct vmw_validate_buffer - Carries validation info about buffers.
  97  *
  98  * @base: Validation info for TTM.
  99  * @hash: Hash entry for quick lookup of the TTM buffer object.
 100  *
 101  * This structure contains also driver private validation info
 102  * on top of the info needed by TTM.
 103  */
 104 struct vmw_validate_buffer {
 105         struct ttm_validate_buffer base;
 106         struct drm_hash_item hash;
 107         bool validate_as_mob;
 108 };
 109
 110 struct vmw_res_func;
 111 struct vmw_resource {
 112         struct kref kref;
 113         struct vmw_private *dev_priv;
 114         int id;
 115         bool avail;
 116         unsigned long backup_size;
 117         bool res_dirty; /* Protected by backup buffer reserved */
 118         bool backup_dirty; /* Protected by backup buffer reserved */
 119         struct vmw_dma_buffer *backup;
 120         unsigned long backup_offset;
 121         unsigned long pin_count; /* Protected by resource reserved */
 122         const struct vmw_res_func *func;
 123         struct list_head lru_head; /* Protected by the resource lock */
 124         struct list_head mob_head; /* Protected by @backup reserved */
 125         struct list_head binding_head; /* Protected by binding_mutex */
 126         void (*res_free) (struct vmw_resource *res);
 127         void (*hw_destroy) (struct vmw_resource *res);
 128 };
 129
 130
 131 /*
 132  * Resources that are managed using ioctls.
 133  */
 134 enum vmw_res_type {
 135         vmw_res_context,
 136         vmw_res_surface,
 137         vmw_res_stream,
 138         vmw_res_shader,
 139         vmw_res_dx_context,
 140         vmw_res_cotable,
 141         vmw_res_view,
 142         vmw_res_max
 143 };
 144
 145 /*
 146  * Resources that are managed using command streams.
 147  */
 148 enum vmw_cmdbuf_res_type {
 149         vmw_cmdbuf_res_shader,
 150         vmw_cmdbuf_res_view
 151 };
 152
 153 struct vmw_cmdbuf_res_manager;
 154
 155 struct vmw_cursor_snooper {
 156         struct drm_crtc *crtc;
 157         size_t age;
 158         uint32_t *image;
 159 };
 160
 161 struct vmw_framebuffer;
 162 struct vmw_surface_offset;
 163
 164 struct vmw_surface {
 165         struct vmw_resource res;
 166         uint32_t flags;
 167         uint32_t format;
 168         uint32_t mip_levels[DRM_VMW_MAX_SURFACE_FACES];
 169         struct drm_vmw_size base_size;
 170         struct drm_vmw_size *sizes;
 171         uint32_t num_sizes;
 172         bool scanout;
 173         uint32_t array_size;
 174         /* TODO so far just a extra pointer */
 175         struct vmw_cursor_snooper snooper;
 176         struct vmw_surface_offset *offsets;
 177         SVGA3dTextureFilter autogen_filter;
 178         uint32_t multisample_count;
 179         struct list_head view_list;
 180 };
 181
 182 struct vmw_marker_queue {
 183         struct list_head head;
 184         u64 lag;
 185         u64 lag_time;
 186         spinlock_t lock;
 187 };
 188
 189 struct vmw_fifo_state {
 190         unsigned long reserved_size;
 191         u32 *dynamic_buffer;
 192         u32 *static_buffer;
 193         unsigned long static_buffer_size;
 194         bool using_bounce_buffer;
 195         uint32_t capabilities;
 196         struct mutex fifo_mutex;
 197         struct rw_semaphore rwsem;
 198         struct vmw_marker_queue marker_queue;
 199         bool dx;
 200 };
 201
 202 struct vmw_relocation {
 203         SVGAMobId *mob_loc;
 204         SVGAGuestPtr *location;
 205         uint32_t index;
 206 };
 207
 208 /**
 209  * struct vmw_res_cache_entry - resource information cache entry
 210  *
 211  * @valid: Whether the entry is valid, which also implies that the execbuf
 212  * code holds a reference to the resource, and it's placed on the
 213  * validation list.
 214  * @handle: User-space handle of a resource.
 215  * @res: Non-ref-counted pointer to the resource.
 216  *
 217  * Used to avoid frequent repeated user-space handle lookups of the
 218  * same resource.
 219  */
 220 struct vmw_res_cache_entry {
 221         bool valid;
 222         uint32_t handle;
 223         struct vmw_resource *res;
 224         struct vmw_resource_val_node *node;
 225 };
 226
 227 /**
 228  * enum vmw_dma_map_mode - indicate how to perform TTM page dma mappings.
 229  */
 230 enum vmw_dma_map_mode {
 231         vmw_dma_phys,           /* Use physical page addresses */
 232         vmw_dma_alloc_coherent, /* Use TTM coherent pages */
 233         vmw_dma_map_populate,   /* Unmap from DMA just after unpopulate */
 234         vmw_dma_map_bind,       /* Unmap from DMA just before unbind */
 235         vmw_dma_map_max
 236 };
 237
 238 /**
 239  * struct vmw_sg_table - Scatter/gather table for binding, with additional
 240  * device-specific information.
 241  *
 242  * @sgt: Pointer to a struct sg_table with binding information
 243  * @num_regions: Number of regions with device-address contiguous pages
 244  */
 245 struct vmw_sg_table {
 246         enum vmw_dma_map_mode mode;
 247         struct page **pages;
 248         const dma_addr_t *addrs;
 249         struct sg_table *sgt;
 250         unsigned long num_regions;
 251         unsigned long num_pages;
 252 };
 253
 254 /**
 255  * struct vmw_piter - Page iterator that iterates over a list of pages
 256  * and DMA addresses that could be either a scatter-gather list or
 257  * arrays
 258  *
 259  * @pages: Array of page pointers to the pages.
 260  * @addrs: DMA addresses to the pages if coherent pages are used.
 261  * @iter: Scatter-gather page iterator. Current position in SG list.
 262  * @i: Current position in arrays.
 263  * @num_pages: Number of pages total.
 264  * @next: Function to advance the iterator. Returns false if past the list
 265  * of pages, true otherwise.
 266  * @dma_address: Function to return the DMA address of the current page.
 267  */
 268 struct vmw_piter {
 269         struct page **pages;
 270         const dma_addr_t *addrs;
 271         struct sg_page_iter iter;
 272         unsigned long i;
 273         unsigned long num_pages;
 274         bool (*next)(struct vmw_piter *);
 275         dma_addr_t (*dma_address)(struct vmw_piter *);
 276         struct page *(*page)(struct vmw_piter *);
 277 };
 278
 279 /*
 280  * enum vmw_display_unit_type - Describes the display unit
 281  */
 282 enum vmw_display_unit_type {
 283         vmw_du_invalid = 0,
 284         vmw_du_legacy,
 285         vmw_du_screen_object,
 286         vmw_du_screen_target
 287 };
 288
 289
 290 struct vmw_sw_context{
 291         struct drm_open_hash res_ht;
 292         bool res_ht_initialized;
 293         bool kernel; /**< is the called made from the kernel */
 294         struct vmw_fpriv *fp;
 295         struct list_head validate_nodes;
 296         struct vmw_relocation relocs[VMWGFX_MAX_RELOCATIONS];
 297         uint32_t cur_reloc;
 298         struct vmw_validate_buffer val_bufs[VMWGFX_MAX_VALIDATIONS];
 299         uint32_t cur_val_buf;
 300         uint32_t *cmd_bounce;
 301         uint32_t cmd_bounce_size;
 302         struct list_head resource_list;
 303         struct list_head ctx_resource_list; /* For contexts and cotables */
 304         struct vmw_dma_buffer *cur_query_bo;
 305         struct list_head res_relocations;
 306         uint32_t *buf_start;
 307         struct vmw_res_cache_entry res_cache[vmw_res_max];
 308         struct vmw_resource *last_query_ctx;
 309         bool needs_post_query_barrier;
 310         struct vmw_resource *error_resource;
 311         struct vmw_ctx_binding_state *staged_bindings;
 312         bool staged_bindings_inuse;
 313         struct list_head staged_cmd_res;
 314         struct vmw_resource_val_node *dx_ctx_node;
 315         struct vmw_dma_buffer *dx_query_mob;
 316         struct vmw_resource *dx_query_ctx;
 317         struct vmw_cmdbuf_res_manager *man;
 318 };
 319
 320 struct vmw_legacy_display;
 321 struct vmw_overlay;
 322
 323 struct vmw_master {
 324         struct ttm_lock lock;
 325 };
 326
 327 struct vmw_vga_topology_state {
 328         uint32_t width;
 329         uint32_t height;
 330         uint32_t primary;
 331         uint32_t pos_x;
 332         uint32_t pos_y;
 333 };
 334
 335
 336 /*
 337  * struct vmw_otable - Guest Memory OBject table metadata
 338  *
 339  * @size:           Size of the table (page-aligned).
 340  * @page_table:     Pointer to a struct vmw_mob holding the page table.
 341  */
 342 struct vmw_otable {
 343         unsigned long size;
 344         struct vmw_mob *page_table;
 345         bool enabled;
 346 };
 347
 348 struct vmw_otable_batch {
 349         unsigned num_otables;
 350         struct vmw_otable *otables;
 351         struct vmw_resource *context;
 352         struct ttm_buffer_object *otable_bo;
 353 };
 354
 355 struct vmw_private {
 356         struct ttm_bo_device bdev;
 357         struct ttm_bo_global_ref bo_global_ref;
 358         struct drm_global_reference mem_global_ref;
 359
 360         struct vmw_fifo_state fifo;
 361
 362         struct drm_device *dev;
 363         unsigned long vmw_chipset;
 364         unsigned int io_start;
 365         uint32_t vram_start;
 366         uint32_t vram_size;
 367         uint32_t prim_bb_mem;
 368         uint32_t mmio_start;
 369         uint32_t mmio_size;
 370         uint32_t fb_max_width;
 371         uint32_t fb_max_height;
 372         uint32_t texture_max_width;
 373         uint32_t texture_max_height;
 374         uint32_t stdu_max_width;
 375         uint32_t stdu_max_height;
 376         uint32_t initial_width;
 377         uint32_t initial_height;
 378         u32 *mmio_virt;
 379         uint32_t capabilities;
 380         uint32_t max_gmr_ids;
 381         uint32_t max_gmr_pages;
 382         uint32_t max_mob_pages;
 383         uint32_t max_mob_size;
 384         uint32_t memory_size;
 385         bool has_gmr;
 386         bool has_mob;
 387         spinlock_t hw_lock;
 388         spinlock_t cap_lock;
 389         bool has_dx;
 390
 391         /*
 392          * VGA registers.
 393          */
 394
 395         struct vmw_vga_topology_state vga_save[VMWGFX_MAX_DISPLAYS];
 396         uint32_t vga_width;
 397         uint32_t vga_height;
 398         uint32_t vga_bpp;
 399         uint32_t vga_bpl;
 400         uint32_t vga_pitchlock;
 401
 402         uint32_t num_displays;
 403
 404         /*
 405          * Framebuffer info.
 406          */
 407
 408         void *fb_info;
 409         enum vmw_display_unit_type active_display_unit;
 410         struct vmw_legacy_display *ldu_priv;
 411         struct vmw_screen_object_display *sou_priv;
 412         struct vmw_overlay *overlay_priv;
 413
 414         /*
 415          * Context and surface management.
 416          */
 417
 418         rwlock_t resource_lock;
 419         struct idr res_idr[vmw_res_max];
 420         /*
 421          * Block lastclose from racing with firstopen.
 422          */
 423
 424         struct mutex init_mutex;
 425
 426         /*
 427          * A resource manager for kernel-only surfaces and
 428          * contexts.
 429          */
 430
 431         struct ttm_object_device *tdev;
 432
 433         /*
 434          * Fencing and IRQs.
 435          */
 436
 437         atomic_t marker_seq;
 438         wait_queue_head_t fence_queue;
 439         wait_queue_head_t fifo_queue;
 440         spinlock_t waiter_lock;
 441         int fence_queue_waiters; /* Protected by waiter_lock */
 442         int goal_queue_waiters; /* Protected by waiter_lock */
 443         int cmdbuf_waiters; /* Protected by waiter_lock */
 444         int error_waiters; /* Protected by waiter_lock */
 445         int fifo_queue_waiters; /* Protected by waiter_lock */
 446         uint32_t last_read_seqno;
 447         struct vmw_fence_manager *fman;
 448         uint32_t irq_mask; /* Updates protected by waiter_lock */
 449
 450         /*
 451          * Device state
 452          */
 453
 454         uint32_t traces_state;
 455         uint32_t enable_state;
 456         uint32_t config_done_state;
 457
 458         /**
 459          * Execbuf
 460          */
 461         /**
 462          * Protected by the cmdbuf mutex.
 463          */
 464
 465         struct vmw_sw_context ctx;
 466         struct mutex cmdbuf_mutex;
 467         struct mutex binding_mutex;
 468
 469         /**
 470          * Operating mode.
 471          */
 472
 473         bool stealth;
 474         bool enable_fb;
 475         spinlock_t svga_lock;
 476
 477         /**
 478          * Master management.
 479          */
 480
 481         struct vmw_master *active_master;
 482         struct vmw_master fbdev_master;
 483         struct notifier_block pm_nb;
 484         bool suspended;
 485         bool refuse_hibernation;
 486
 487         struct mutex release_mutex;
 488         atomic_t num_fifo_resources;
 489
 490         /*
 491          * Replace this with an rwsem as soon as we have down_xx_interruptible()
 492          */
 493         struct ttm_lock reservation_sem;
 494
 495         /*
 496          * Query processing. These members
 497          * are protected by the cmdbuf mutex.
 498          */
 499
 500         struct vmw_dma_buffer *dummy_query_bo;
 501         struct vmw_dma_buffer *pinned_bo;
 502         uint32_t query_cid;
 503         uint32_t query_cid_valid;
 504         bool dummy_query_bo_pinned;
 505
 506         /*
 507          * Surface swapping. The "surface_lru" list is protected by the
 508          * resource lock in order to be able to destroy a surface and take
 509          * it off the lru atomically. "used_memory_size" is currently
 510          * protected by the cmdbuf mutex for simplicity.
 511          */
 512
 513         struct list_head res_lru[vmw_res_max];
 514         uint32_t used_memory_size;
 515
 516         /*
 517          * DMA mapping stuff.
 518          */
 519         enum vmw_dma_map_mode map_mode;
 520
 521         /*
 522          * Guest Backed stuff
 523          */
 524         struct vmw_otable_batch otable_batch;
 525
 526         struct vmw_cmdbuf_man *cman;
 527 };
 528
 529 static inline struct vmw_surface *vmw_res_to_srf(struct vmw_resource *res)
 530 {
 531         return container_of(res, struct vmw_surface, res);
 532 }
 533
 534 static inline struct vmw_private *vmw_priv(struct drm_device *dev)
 535 {
 536         return (struct vmw_private *)dev->dev_private;
 537 }
 538
 539 static inline struct vmw_fpriv *vmw_fpriv(struct drm_file *file_priv)
 540 {
 541         return (struct vmw_fpriv *)file_priv->driver_priv;
 542 }
 543
 544 static inline struct vmw_master *vmw_master(struct drm_master *master)
 545 {
 546         return (struct vmw_master *) master->driver_priv;
 547 }
 548
 549 /*
 550  * The locking here is fine-grained, so that it is performed once
 551  * for every read- and write operation. This is of course costly, but we
 552  * don't perform much register access in the timing critical paths anyway.
 553  * Instead we have the extra benefit of being sure that we don't forget
 554  * the hw lock around register accesses.
 555  */
 556 static inline void vmw_write(struct vmw_private *dev_priv,
 557                              unsigned int offset, uint32_t value)
 558 {
 559         unsigned long irq_flags;
 560
 561         spin_lock_irqsave(&dev_priv->hw_lock, irq_flags);
 562         outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
 563         outl(value, dev_priv->io_start + VMWGFX_VALUE_PORT);
 564         spin_unlock_irqrestore(&dev_priv->hw_lock, irq_flags);
 565 }
 566
 567 static inline uint32_t vmw_read(struct vmw_private *dev_priv,
 568                                 unsigned int offset)
 569 {
 570         unsigned long irq_flags;
 571         u32 val;
 572
 573         spin_lock_irqsave(&dev_priv->hw_lock, irq_flags);
 574         outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT);
 575         val = inl(dev_priv->io_start + VMWGFX_VALUE_PORT);
 576         spin_unlock_irqrestore(&dev_priv->hw_lock, irq_flags);
 577
 578         return val;
 579 }
 580
 581 extern void vmw_svga_enable(struct vmw_private *dev_priv);
 582 extern void vmw_svga_disable(struct vmw_private *dev_priv);
 583
 584
 585 /**
 586  * GMR utilities - vmwgfx_gmr.c
 587  */
 588
 589 extern int vmw_gmr_bind(struct vmw_private *dev_priv,
 590                         const struct vmw_sg_table *vsgt,
 591                         unsigned long num_pages,
 592                         int gmr_id);
 593 extern void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id);
 594
 595 /**
 596  * Resource utilities - vmwgfx_resource.c
 597  */
 598 struct vmw_user_resource_conv;
 599
 600 extern void vmw_resource_unreference(struct vmw_resource **p_res);
 601 extern struct vmw_resource *vmw_resource_reference(struct vmw_resource *res);
 602 extern struct vmw_resource *
 603 vmw_resource_reference_unless_doomed(struct vmw_resource *res);
 604 extern int vmw_resource_validate(struct vmw_resource *res);
 605 extern int vmw_resource_reserve(struct vmw_resource *res, bool interruptible,
 606                                 bool no_backup);
 607 extern bool vmw_resource_needs_backup(const struct vmw_resource *res);
 608 extern int vmw_user_lookup_handle(struct vmw_private *dev_priv,
 609                                   struct ttm_object_file *tfile,
 610                                   uint32_t handle,
 611                                   struct vmw_surface **out_surf,
 612                                   struct vmw_dma_buffer **out_buf);
 613 extern int vmw_user_resource_lookup_handle(
 614         struct vmw_private *dev_priv,
 615         struct ttm_object_file *tfile,
 616         uint32_t handle,
 617         const struct vmw_user_resource_conv *converter,
 618         struct vmw_resource **p_res);
 619 extern void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo);
 620 extern int vmw_dmabuf_init(struct vmw_private *dev_priv,
 621                            struct vmw_dma_buffer *vmw_bo,
 622                            size_t size, struct ttm_placement *placement,
 623                            bool interuptable,
 624                            void (*bo_free) (struct ttm_buffer_object *bo));
 625 extern int vmw_user_dmabuf_verify_access(struct ttm_buffer_object *bo,
 626                                   struct ttm_object_file *tfile);
 627 extern int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
 628                                  struct ttm_object_file *tfile,
 629                                  uint32_t size,
 630                                  bool shareable,
 631                                  uint32_t *handle,
 632                                  struct vmw_dma_buffer **p_dma_buf,
 633                                  struct ttm_base_object **p_base);
 634 extern int vmw_user_dmabuf_reference(struct ttm_object_file *tfile,
 635                                      struct vmw_dma_buffer *dma_buf,
 636                                      uint32_t *handle);
 637 extern int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
 638                                   struct drm_file *file_priv);
 639 extern int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
 640                                   struct drm_file *file_priv);
 641 extern int vmw_user_dmabuf_synccpu_ioctl(struct drm_device *dev, void *data,
 642                                          struct drm_file *file_priv);
 643 extern uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo,
 644                                          uint32_t cur_validate_node);
 645 extern void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo);
 646 extern int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
 647                                   uint32_t id, struct vmw_dma_buffer **out,
 648                                   struct ttm_base_object **base);
 649 extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
 650                                   struct drm_file *file_priv);
 651 extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
 652                                   struct drm_file *file_priv);
 653 extern int vmw_user_stream_lookup(struct vmw_private *dev_priv,
 654                                   struct ttm_object_file *tfile,
 655                                   uint32_t *inout_id,
 656                                   struct vmw_resource **out);
 657 extern void vmw_resource_unreserve(struct vmw_resource *res,
 658                                    bool switch_backup,
 659                                    struct vmw_dma_buffer *new_backup,
 660                                    unsigned long new_backup_offset);
 661 extern void vmw_resource_move_notify(struct ttm_buffer_object *bo,
 662                                      struct ttm_mem_reg *mem);
 663 extern void vmw_query_move_notify(struct ttm_buffer_object *bo,
 664                                   struct ttm_mem_reg *mem);
 665 extern int vmw_query_readback_all(struct vmw_dma_buffer *dx_query_mob);
 666 extern void vmw_fence_single_bo(struct ttm_buffer_object *bo,
 667                                 struct vmw_fence_obj *fence);
 668 extern void vmw_resource_evict_all(struct vmw_private *dev_priv);
 669
 670 /**
 671  * DMA buffer helper routines - vmwgfx_dmabuf.c
 672  */
 673 extern int vmw_dmabuf_pin_in_placement(struct vmw_private *vmw_priv,
 674                                        struct vmw_dma_buffer *bo,
 675                                        struct ttm_placement *placement,
 676                                        bool interruptible);
 677 extern int vmw_dmabuf_pin_in_vram(struct vmw_private *dev_priv,
 678                                   struct vmw_dma_buffer *buf,
 679                                   bool interruptible);
 680 extern int vmw_dmabuf_pin_in_vram_or_gmr(struct vmw_private *dev_priv,
 681                                          struct vmw_dma_buffer *buf,
 682                                          bool interruptible);
 683 extern int vmw_dmabuf_pin_in_start_of_vram(struct vmw_private *vmw_priv,
 684                                            struct vmw_dma_buffer *bo,
 685                                            bool interruptible);
 686 extern int vmw_dmabuf_unpin(struct vmw_private *vmw_priv,
 687                             struct vmw_dma_buffer *bo,
 688                             bool interruptible);
 689 extern void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *buf,
 690                                  SVGAGuestPtr *ptr);
 691 extern void vmw_bo_pin_reserved(struct vmw_dma_buffer *bo, bool pin);
 692
 693 /**
 694  * Misc Ioctl functionality - vmwgfx_ioctl.c
 695  */
 696
 697 extern int vmw_getparam_ioctl(struct drm_device *dev, void *data,
 698                               struct drm_file *file_priv);
 699 extern int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
 700                                 struct drm_file *file_priv);
 701 extern int vmw_present_ioctl(struct drm_device *dev, void *data,
 702                              struct drm_file *file_priv);
 703 extern int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
 704                                       struct drm_file *file_priv);
 705 extern unsigned int vmw_fops_poll(struct file *filp,
 706                                   struct poll_table_struct *wait);
 707 extern ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
 708                              size_t count, loff_t *offset);
 709
 710 /**
 711  * Fifo utilities - vmwgfx_fifo.c
 712  */
 713
 714 extern int vmw_fifo_init(struct vmw_private *dev_priv,
 715                          struct vmw_fifo_state *fifo);
 716 extern void vmw_fifo_release(struct vmw_private *dev_priv,
 717                              struct vmw_fifo_state *fifo);
 718 extern void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes);
 719 extern void *
 720 vmw_fifo_reserve_dx(struct vmw_private *dev_priv, uint32_t bytes, int ctx_id);
 721 extern void vmw_fifo_commit(struct vmw_private *dev_priv, uint32_t bytes);
 722 extern void vmw_fifo_commit_flush(struct vmw_private *dev_priv, uint32_t bytes);
 723 extern int vmw_fifo_send_fence(struct vmw_private *dev_priv,
 724                                uint32_t *seqno);
 725 extern void vmw_fifo_ping_host_locked(struct vmw_private *, uint32_t reason);
 726 extern void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason);
 727 extern bool vmw_fifo_have_3d(struct vmw_private *dev_priv);
 728 extern bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv);
 729 extern int vmw_fifo_emit_dummy_query(struct vmw_private *dev_priv,
 730                                      uint32_t cid);
 731 extern int vmw_fifo_flush(struct vmw_private *dev_priv,
 732                           bool interruptible);
 733
 734 /**
 735  * TTM glue - vmwgfx_ttm_glue.c
 736  */
 737
 738 extern int vmw_ttm_global_init(struct vmw_private *dev_priv);
 739 extern void vmw_ttm_global_release(struct vmw_private *dev_priv);
 740 extern int vmw_mmap(struct file *filp, struct vm_area_struct *vma);
 741
 742 /**
 743  * TTM buffer object driver - vmwgfx_buffer.c
 744  */
 745
 746 extern const size_t vmw_tt_size;
 747 extern struct ttm_placement vmw_vram_placement;
 748 extern struct ttm_placement vmw_vram_ne_placement;
 749 extern struct ttm_placement vmw_vram_sys_placement;
 750 extern struct ttm_placement vmw_vram_gmr_placement;
 751 extern struct ttm_placement vmw_vram_gmr_ne_placement;
 752 extern struct ttm_placement vmw_sys_placement;
 753 extern struct ttm_placement vmw_sys_ne_placement;
 754 extern struct ttm_placement vmw_evictable_placement;
 755 extern struct ttm_placement vmw_srf_placement;
 756 extern struct ttm_placement vmw_mob_placement;
 757 extern struct ttm_placement vmw_mob_ne_placement;
 758 extern struct ttm_bo_driver vmw_bo_driver;
 759 extern int vmw_dma_quiescent(struct drm_device *dev);
 760 extern int vmw_bo_map_dma(struct ttm_buffer_object *bo);
 761 extern void vmw_bo_unmap_dma(struct ttm_buffer_object *bo);
 762 extern const struct vmw_sg_table *
 763 vmw_bo_sg_table(struct ttm_buffer_object *bo);
 764 extern void vmw_piter_start(struct vmw_piter *viter,
 765                             const struct vmw_sg_table *vsgt,
 766                             unsigned long p_offs);
 767
 768 /**
 769  * vmw_piter_next - Advance the iterator one page.
 770  *
 771  * @viter: Pointer to the iterator to advance.
 772  *
 773  * Returns false if past the list of pages, true otherwise.
 774  */
 775 static inline bool vmw_piter_next(struct vmw_piter *viter)
 776 {
 777         return viter->next(viter);
 778 }
 779
 780 /**
 781  * vmw_piter_dma_addr - Return the DMA address of the current page.
 782  *
 783  * @viter: Pointer to the iterator
 784  *
 785  * Returns the DMA address of the page pointed to by @viter.
 786  */
 787 static inline dma_addr_t vmw_piter_dma_addr(struct vmw_piter *viter)
 788 {
 789         return viter->dma_address(viter);
 790 }
 791
 792 /**
 793  * vmw_piter_page - Return a pointer to the current page.
 794  *
 795  * @viter: Pointer to the iterator
 796  *
 797  * Returns the DMA address of the page pointed to by @viter.
 798  */
 799 static inline struct page *vmw_piter_page(struct vmw_piter *viter)
 800 {
 801         return viter->page(viter);
 802 }
 803
 804 /**
 805  * Command submission - vmwgfx_execbuf.c
 806  */
 807
 808 extern int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data,
 809                              struct drm_file *file_priv, size_t size);
 810 extern int vmw_execbuf_process(struct drm_file *file_priv,
 811                                struct vmw_private *dev_priv,
 812                                void __user *user_commands,
 813                                void *kernel_commands,
 814                                uint32_t command_size,
 815                                uint64_t throttle_us,
 816                                uint32_t dx_context_handle,
 817                                struct drm_vmw_fence_rep __user
 818                                *user_fence_rep,
 819                                struct vmw_fence_obj **out_fence);
 820 extern void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
 821                                             struct vmw_fence_obj *fence);
 822 extern void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv);
 823
 824 extern int vmw_execbuf_fence_commands(struct drm_file *file_priv,
 825                                       struct vmw_private *dev_priv,
 826                                       struct vmw_fence_obj **p_fence,
 827                                       uint32_t *p_handle);
 828 extern void vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv,
 829                                         struct vmw_fpriv *vmw_fp,
 830                                         int ret,
 831                                         struct drm_vmw_fence_rep __user
 832                                         *user_fence_rep,
 833                                         struct vmw_fence_obj *fence,
 834                                         uint32_t fence_handle);
 835 extern int vmw_validate_single_buffer(struct vmw_private *dev_priv,
 836                                       struct ttm_buffer_object *bo,
 837                                       bool interruptible,
 838                                       bool validate_as_mob);
 839
 840
 841 /**
 842  * IRQs and wating - vmwgfx_irq.c
 843  */
 844
 845 extern irqreturn_t vmw_irq_handler(int irq, void *arg);
 846 extern int vmw_wait_seqno(struct vmw_private *dev_priv, bool lazy,
 847                           uint32_t seqno, bool interruptible,
 848                           unsigned long timeout);
 849 extern void vmw_irq_preinstall(struct drm_device *dev);
 850 extern int vmw_irq_postinstall(struct drm_device *dev);
 851 extern void vmw_irq_uninstall(struct drm_device *dev);
 852 extern bool vmw_seqno_passed(struct vmw_private *dev_priv,
 853                                 uint32_t seqno);
 854 extern int vmw_fallback_wait(struct vmw_private *dev_priv,
 855                              bool lazy,
 856                              bool fifo_idle,
 857                              uint32_t seqno,
 858                              bool interruptible,
 859                              unsigned long timeout);
 860 extern void vmw_update_seqno(struct vmw_private *dev_priv,
 861                                 struct vmw_fifo_state *fifo_state);
 862 extern void vmw_seqno_waiter_add(struct vmw_private *dev_priv);
 863 extern void vmw_seqno_waiter_remove(struct vmw_private *dev_priv);
 864 extern void vmw_goal_waiter_add(struct vmw_private *dev_priv);
 865 extern void vmw_goal_waiter_remove(struct vmw_private *dev_priv);
 866 extern void vmw_generic_waiter_add(struct vmw_private *dev_priv, u32 flag,
 867                                    int *waiter_count);
 868 extern void vmw_generic_waiter_remove(struct vmw_private *dev_priv,
 869                                       u32 flag, int *waiter_count);
 870
 871 /**
 872  * Rudimentary fence-like objects currently used only for throttling -
 873  * vmwgfx_marker.c
 874  */
 875
 876 extern void vmw_marker_queue_init(struct vmw_marker_queue *queue);
 877 extern void vmw_marker_queue_takedown(struct vmw_marker_queue *queue);
 878 extern int vmw_marker_push(struct vmw_marker_queue *queue,
 879                            uint32_t seqno);
 880 extern int vmw_marker_pull(struct vmw_marker_queue *queue,
 881                            uint32_t signaled_seqno);
 882 extern int vmw_wait_lag(struct vmw_private *dev_priv,
 883                         struct vmw_marker_queue *queue, uint32_t us);
 884
 885 /**
 886  * Kernel framebuffer - vmwgfx_fb.c
 887  */
 888
 889 int vmw_fb_init(struct vmw_private *vmw_priv);
 890 int vmw_fb_close(struct vmw_private *dev_priv);
 891 int vmw_fb_off(struct vmw_private *vmw_priv);
 892 int vmw_fb_on(struct vmw_private *vmw_priv);
 893
 894 /**
 895  * Kernel modesetting - vmwgfx_kms.c
 896  */
 897
 898 int vmw_kms_init(struct vmw_private *dev_priv);
 899 int vmw_kms_close(struct vmw_private *dev_priv);
 900 int vmw_kms_save_vga(struct vmw_private *vmw_priv);
 901 int vmw_kms_restore_vga(struct vmw_private *vmw_priv);
 902 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
 903                                 struct drm_file *file_priv);
 904 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv);
 905 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
 906                           struct ttm_object_file *tfile,
 907                           struct ttm_buffer_object *bo,
 908                           SVGA3dCmdHeader *header);
 909 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
 910                        unsigned width, unsigned height, unsigned pitch,
 911                        unsigned bpp, unsigned depth);
 912 void vmw_kms_idle_workqueues(struct vmw_master *vmaster);
 913 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
 914                                 uint32_t pitch,
 915                                 uint32_t height);
 916 u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
 917 int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe);
 918 void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe);
 919 int vmw_kms_present(struct vmw_private *dev_priv,
 920                     struct drm_file *file_priv,
 921                     struct vmw_framebuffer *vfb,
 922                     struct vmw_surface *surface,
 923                     uint32_t sid, int32_t destX, int32_t destY,
 924                     struct drm_vmw_rect *clips,
 925                     uint32_t num_clips);
 926 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
 927                                 struct drm_file *file_priv);
 928 void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv);
 929
 930 int vmw_dumb_create(struct drm_file *file_priv,
 931                     struct drm_device *dev,
 932                     struct drm_mode_create_dumb *args);
 933
 934 int vmw_dumb_map_offset(struct drm_file *file_priv,
 935                         struct drm_device *dev, uint32_t handle,
 936                         uint64_t *offset);
 937 int vmw_dumb_destroy(struct drm_file *file_priv,
 938                      struct drm_device *dev,
 939                      uint32_t handle);
 940 extern int vmw_resource_pin(struct vmw_resource *res, bool interruptible);
 941 extern void vmw_resource_unpin(struct vmw_resource *res);
 942 extern enum vmw_res_type vmw_res_type(const struct vmw_resource *res);
 943
 944 /**
 945  * Overlay control - vmwgfx_overlay.c
 946  */
 947
 948 int vmw_overlay_init(struct vmw_private *dev_priv);
 949 int vmw_overlay_close(struct vmw_private *dev_priv);
 950 int vmw_overlay_ioctl(struct drm_device *dev, void *data,
 951                       struct drm_file *file_priv);
 952 int vmw_overlay_stop_all(struct vmw_private *dev_priv);
 953 int vmw_overlay_resume_all(struct vmw_private *dev_priv);
 954 int vmw_overlay_pause_all(struct vmw_private *dev_priv);
 955 int vmw_overlay_claim(struct vmw_private *dev_priv, uint32_t *out);
 956 int vmw_overlay_unref(struct vmw_private *dev_priv, uint32_t stream_id);
 957 int vmw_overlay_num_overlays(struct vmw_private *dev_priv);
 958 int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv);
 959
 960 /**
 961  * GMR Id manager
 962  */
 963
 964 extern const struct ttm_mem_type_manager_func vmw_gmrid_manager_func;
 965
 966 /**
 967  * Prime - vmwgfx_prime.c
 968  */
 969
 970 extern const struct dma_buf_ops vmw_prime_dmabuf_ops;
 971 extern int vmw_prime_fd_to_handle(struct drm_device *dev,
 972                                   struct drm_file *file_priv,
 973                                   int fd, u32 *handle);
 974 extern int vmw_prime_handle_to_fd(struct drm_device *dev,
 975                                   struct drm_file *file_priv,
 976                                   uint32_t handle, uint32_t flags,
 977                                   int *prime_fd);
 978
 979 /*
 980  * MemoryOBject management -  vmwgfx_mob.c
 981  */
 982 struct vmw_mob;
 983 extern int vmw_mob_bind(struct vmw_private *dev_priv, struct vmw_mob *mob,
 984                         const struct vmw_sg_table *vsgt,
 985                         unsigned long num_data_pages, int32_t mob_id);
 986 extern void vmw_mob_unbind(struct vmw_private *dev_priv,
 987                            struct vmw_mob *mob);
 988 extern void vmw_mob_destroy(struct vmw_mob *mob);
 989 extern struct vmw_mob *vmw_mob_create(unsigned long data_pages);
 990 extern int vmw_otables_setup(struct vmw_private *dev_priv);
 991 extern void vmw_otables_takedown(struct vmw_private *dev_priv);
 992
 993 /*
 994  * Context management - vmwgfx_context.c
 995  */
 996
 997 extern const struct vmw_user_resource_conv *user_context_converter;
 998
 999 extern int vmw_context_check(struct vmw_private *dev_priv,
1000                              struct ttm_object_file *tfile,
1001                              int id,
1002                              struct vmw_resource **p_res);
1003 extern int vmw_context_define_ioctl(struct drm_device *dev, void *data,
1004                                     struct drm_file *file_priv);
1005 extern int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data,
1006                                              struct drm_file *file_priv);
1007 extern int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
1008                                      struct drm_file *file_priv);
1009 extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx);
1010 extern struct vmw_cmdbuf_res_manager *
1011 vmw_context_res_man(struct vmw_resource *ctx);
1012 extern struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx,
1013                                                 SVGACOTableType cotable_type);
1014 extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx);
1015 struct vmw_ctx_binding_state;
1016 extern struct vmw_ctx_binding_state *
1017 vmw_context_binding_state(struct vmw_resource *ctx);
1018 extern void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx,
1019                                           bool readback);
1020 extern int vmw_context_bind_dx_query(struct vmw_resource *ctx_res,
1021                                      struct vmw_dma_buffer *mob);
1022 extern struct vmw_dma_buffer *
1023 vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res);
1024
1025
1026 /*
1027  * Surface management - vmwgfx_surface.c
1028  */
1029
1030 extern const struct vmw_user_resource_conv *user_surface_converter;
1031
1032 extern void vmw_surface_res_free(struct vmw_resource *res);
1033 extern int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
1034                                      struct drm_file *file_priv);
1035 extern int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
1036                                     struct drm_file *file_priv);
1037 extern int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
1038                                        struct drm_file *file_priv);
1039 extern int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
1040                                        struct drm_file *file_priv);
1041 extern int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
1042                                           struct drm_file *file_priv);
1043 extern int vmw_surface_check(struct vmw_private *dev_priv,
1044                              struct ttm_object_file *tfile,
1045                              uint32_t handle, int *id);
1046 extern int vmw_surface_validate(struct vmw_private *dev_priv,
1047                                 struct vmw_surface *srf);
1048 int vmw_surface_gb_priv_define(struct drm_device *dev,
1049                                uint32_t user_accounting_size,
1050                                uint32_t svga3d_flags,
1051                                SVGA3dSurfaceFormat format,
1052                                bool for_scanout,
1053                                uint32_t num_mip_levels,
1054                                uint32_t multisample_count,
1055                                uint32_t array_size,
1056                                struct drm_vmw_size size,
1057                                struct vmw_surface **srf_out);
1058
1059 /*
1060  * Shader management - vmwgfx_shader.c
1061  */
1062
1063 extern const struct vmw_user_resource_conv *user_shader_converter;
1064
1065 extern int vmw_shader_define_ioctl(struct drm_device *dev, void *data,
1066                                    struct drm_file *file_priv);
1067 extern int vmw_shader_destroy_ioctl(struct drm_device *dev, void *data,
1068                                     struct drm_file *file_priv);
1069 extern int vmw_compat_shader_add(struct vmw_private *dev_priv,
1070                                  struct vmw_cmdbuf_res_manager *man,
1071                                  u32 user_key, const void *bytecode,
1072                                  SVGA3dShaderType shader_type,
1073                                  size_t size,
1074                                  struct list_head *list);
1075 extern int vmw_shader_remove(struct vmw_cmdbuf_res_manager *man,
1076                              u32 user_key, SVGA3dShaderType shader_type,
1077                              struct list_head *list);
1078 extern int vmw_dx_shader_add(struct vmw_cmdbuf_res_manager *man,
1079                              struct vmw_resource *ctx,
1080                              u32 user_key,
1081                              SVGA3dShaderType shader_type,
1082                              struct list_head *list);
1083 extern void vmw_dx_shader_cotable_list_scrub(struct vmw_private *dev_priv,
1084                                              struct list_head *list,
1085                                              bool readback);
1086
1087 extern struct vmw_resource *
1088 vmw_shader_lookup(struct vmw_cmdbuf_res_manager *man,
1089                   u32 user_key, SVGA3dShaderType shader_type);
1090
1091 /*
1092  * Command buffer managed resources - vmwgfx_cmdbuf_res.c
1093  */
1094
1095 extern struct vmw_cmdbuf_res_manager *
1096 vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv);
1097 extern void vmw_cmdbuf_res_man_destroy(struct vmw_cmdbuf_res_manager *man);
1098 extern size_t vmw_cmdbuf_res_man_size(void);
1099 extern struct vmw_resource *
1100 vmw_cmdbuf_res_lookup(struct vmw_cmdbuf_res_manager *man,
1101                       enum vmw_cmdbuf_res_type res_type,
1102                       u32 user_key);
1103 extern void vmw_cmdbuf_res_revert(struct list_head *list);
1104 extern void vmw_cmdbuf_res_commit(struct list_head *list);
1105 extern int vmw_cmdbuf_res_add(struct vmw_cmdbuf_res_manager *man,
1106                               enum vmw_cmdbuf_res_type res_type,
1107                               u32 user_key,
1108                               struct vmw_resource *res,
1109                               struct list_head *list);
1110 extern int vmw_cmdbuf_res_remove(struct vmw_cmdbuf_res_manager *man,
1111                                  enum vmw_cmdbuf_res_type res_type,
1112                                  u32 user_key,
1113                                  struct list_head *list,
1114                                  struct vmw_resource **res);
1115
1116 /*
1117  * COTable management - vmwgfx_cotable.c
1118  */
1119 extern const SVGACOTableType vmw_cotable_scrub_order[];
1120 extern struct vmw_resource *vmw_cotable_alloc(struct vmw_private *dev_priv,
1121                                               struct vmw_resource *ctx,
1122                                               u32 type);
1123 extern int vmw_cotable_notify(struct vmw_resource *res, int id);
1124 extern int vmw_cotable_scrub(struct vmw_resource *res, bool readback);
1125 extern void vmw_cotable_add_resource(struct vmw_resource *ctx,
1126                                      struct list_head *head);
1127
1128 /*
1129  * Command buffer managerment vmwgfx_cmdbuf.c
1130  */
1131 struct vmw_cmdbuf_man;
1132 struct vmw_cmdbuf_header;
1133
1134 extern struct vmw_cmdbuf_man *
1135 vmw_cmdbuf_man_create(struct vmw_private *dev_priv);
1136 extern int vmw_cmdbuf_set_pool_size(struct vmw_cmdbuf_man *man,
1137                                     size_t size, size_t default_size);
1138 extern void vmw_cmdbuf_remove_pool(struct vmw_cmdbuf_man *man);
1139 extern void vmw_cmdbuf_man_destroy(struct vmw_cmdbuf_man *man);
1140 extern int vmw_cmdbuf_idle(struct vmw_cmdbuf_man *man, bool interruptible,
1141                            unsigned long timeout);
1142 extern void *vmw_cmdbuf_reserve(struct vmw_cmdbuf_man *man, size_t size,
1143                                 int ctx_id, bool interruptible,
1144                                 struct vmw_cmdbuf_header *header);
1145 extern void vmw_cmdbuf_commit(struct vmw_cmdbuf_man *man, size_t size,
1146                               struct vmw_cmdbuf_header *header,
1147                               bool flush);
1148 extern void vmw_cmdbuf_tasklet_schedule(struct vmw_cmdbuf_man *man);
1149 extern void *vmw_cmdbuf_alloc(struct vmw_cmdbuf_man *man,
1150                               size_t size, bool interruptible,
1151                               struct vmw_cmdbuf_header **p_header);
1152 extern void vmw_cmdbuf_header_free(struct vmw_cmdbuf_header *header);
1153 extern int vmw_cmdbuf_cur_flush(struct vmw_cmdbuf_man *man,
1154                                 bool interruptible);
1155
1156
1157 /**
1158  * Inline helper functions
1159  */
1160
1161 static inline void vmw_surface_unreference(struct vmw_surface **srf)
1162 {
1163         struct vmw_surface *tmp_srf = *srf;
1164         struct vmw_resource *res = &tmp_srf->res;
1165         *srf = NULL;
1166
1167         vmw_resource_unreference(&res);
1168 }
1169
1170 static inline struct vmw_surface *vmw_surface_reference(struct vmw_surface *srf)
1171 {
1172         (void) vmw_resource_reference(&srf->res);
1173         return srf;
1174 }
1175
1176 static inline void vmw_dmabuf_unreference(struct vmw_dma_buffer **buf)
1177 {
1178         struct vmw_dma_buffer *tmp_buf = *buf;
1179
1180         *buf = NULL;
1181         if (tmp_buf != NULL) {
1182                 struct ttm_buffer_object *bo = &tmp_buf->base;
1183
1184                 ttm_bo_unref(&bo);
1185         }
1186 }
1187
1188 static inline struct vmw_dma_buffer *vmw_dmabuf_reference(struct vmw_dma_buffer *buf)
1189 {
1190         if (ttm_bo_reference(&buf->base))
1191                 return buf;
1192         return NULL;
1193 }
1194
1195 static inline struct ttm_mem_global *vmw_mem_glob(struct vmw_private *dev_priv)
1196 {
1197         return (struct ttm_mem_global *) dev_priv->mem_global_ref.object;
1198 }
1199
1200 static inline void vmw_fifo_resource_inc(struct vmw_private *dev_priv)
1201 {
1202         atomic_inc(&dev_priv->num_fifo_resources);
1203 }
1204
1205 static inline void vmw_fifo_resource_dec(struct vmw_private *dev_priv)
1206 {
1207         atomic_dec(&dev_priv->num_fifo_resources);
1208 }
1209
1210 /**
1211  * vmw_mmio_read - Perform a MMIO read from volatile memory
1212  *
1213  * @addr: The address to read from
1214  *
1215  * This function is intended to be equivalent to ioread32() on
1216  * memremap'd memory, but without byteswapping.
1217  */
1218 static inline u32 vmw_mmio_read(u32 *addr)
1219 {
1220         return READ_ONCE(*addr);
1221 }
1222
1223 /**
1224  * vmw_mmio_write - Perform a MMIO write to volatile memory
1225  *
1226  * @addr: The address to write to
1227  *
1228  * This function is intended to be equivalent to iowrite32 on
1229  * memremap'd memory, but without byteswapping.
1230  */
1231 static inline void vmw_mmio_write(u32 value, u32 *addr)
1232 {
1233         WRITE_ONCE(*addr, value);
1234 }
1235 #endif