1 /************************************************************************** 2 * 3 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24 * USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 #ifndef _VMWGFX_DRV_H_ 29 #define _VMWGFX_DRV_H_ 30 31 #include "vmwgfx_reg.h" 32 #include <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 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_screen_object_display *sou_priv; 411 struct vmw_overlay *overlay_priv; 412 413 /* 414 * Context and surface management. 415 */ 416 417 rwlock_t resource_lock; 418 struct idr res_idr[vmw_res_max]; 419 /* 420 * Block lastclose from racing with firstopen. 421 */ 422 423 struct mutex init_mutex; 424 425 /* 426 * A resource manager for kernel-only surfaces and 427 * contexts. 428 */ 429 430 struct ttm_object_device *tdev; 431 432 /* 433 * Fencing and IRQs. 434 */ 435 436 atomic_t marker_seq; 437 wait_queue_head_t fence_queue; 438 wait_queue_head_t fifo_queue; 439 spinlock_t waiter_lock; 440 int fence_queue_waiters; /* Protected by waiter_lock */ 441 int goal_queue_waiters; /* Protected by waiter_lock */ 442 int cmdbuf_waiters; /* Protected by waiter_lock */ 443 int error_waiters; /* Protected by waiter_lock */ 444 int fifo_queue_waiters; /* Protected by waiter_lock */ 445 uint32_t last_read_seqno; 446 struct vmw_fence_manager *fman; 447 uint32_t irq_mask; /* Updates protected by waiter_lock */ 448 449 /* 450 * Device state 451 */ 452 453 uint32_t traces_state; 454 uint32_t enable_state; 455 uint32_t config_done_state; 456 457 /** 458 * Execbuf 459 */ 460 /** 461 * Protected by the cmdbuf mutex. 462 */ 463 464 struct vmw_sw_context ctx; 465 struct mutex cmdbuf_mutex; 466 struct mutex binding_mutex; 467 468 /** 469 * Operating mode. 470 */ 471 472 bool stealth; 473 bool enable_fb; 474 spinlock_t svga_lock; 475 476 /** 477 * Master management. 478 */ 479 480 struct vmw_master *active_master; 481 struct vmw_master fbdev_master; 482 struct notifier_block pm_nb; 483 bool suspended; 484 bool refuse_hibernation; 485 486 struct mutex release_mutex; 487 atomic_t num_fifo_resources; 488 489 /* 490 * Replace this with an rwsem as soon as we have down_xx_interruptible() 491 */ 492 struct ttm_lock reservation_sem; 493 494 /* 495 * Query processing. These members 496 * are protected by the cmdbuf mutex. 497 */ 498 499 struct vmw_dma_buffer *dummy_query_bo; 500 struct vmw_dma_buffer *pinned_bo; 501 uint32_t query_cid; 502 uint32_t query_cid_valid; 503 bool dummy_query_bo_pinned; 504 505 /* 506 * Surface swapping. The "surface_lru" list is protected by the 507 * resource lock in order to be able to destroy a surface and take 508 * it off the lru atomically. "used_memory_size" is currently 509 * protected by the cmdbuf mutex for simplicity. 510 */ 511 512 struct list_head res_lru[vmw_res_max]; 513 uint32_t used_memory_size; 514 515 /* 516 * DMA mapping stuff. 517 */ 518 enum vmw_dma_map_mode map_mode; 519 520 /* 521 * Guest Backed stuff 522 */ 523 struct vmw_otable_batch otable_batch; 524 525 struct vmw_cmdbuf_man *cman; 526 }; 527 528 static inline struct vmw_surface *vmw_res_to_srf(struct vmw_resource *res) 529 { 530 return container_of(res, struct vmw_surface, res); 531 } 532 533 static inline struct vmw_private *vmw_priv(struct drm_device *dev) 534 { 535 return (struct vmw_private *)dev->dev_private; 536 } 537 538 static inline struct vmw_fpriv *vmw_fpriv(struct drm_file *file_priv) 539 { 540 return (struct vmw_fpriv *)file_priv->driver_priv; 541 } 542 543 static inline struct vmw_master *vmw_master(struct drm_master *master) 544 { 545 return (struct vmw_master *) master->driver_priv; 546 } 547 548 /* 549 * The locking here is fine-grained, so that it is performed once 550 * for every read- and write operation. This is of course costly, but we 551 * don't perform much register access in the timing critical paths anyway. 552 * Instead we have the extra benefit of being sure that we don't forget 553 * the hw lock around register accesses. 554 */ 555 static inline void vmw_write(struct vmw_private *dev_priv, 556 unsigned int offset, uint32_t value) 557 { 558 unsigned long irq_flags; 559 560 spin_lock_irqsave(&dev_priv->hw_lock, irq_flags); 561 outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT); 562 outl(value, dev_priv->io_start + VMWGFX_VALUE_PORT); 563 spin_unlock_irqrestore(&dev_priv->hw_lock, irq_flags); 564 } 565 566 static inline uint32_t vmw_read(struct vmw_private *dev_priv, 567 unsigned int offset) 568 { 569 unsigned long irq_flags; 570 u32 val; 571 572 spin_lock_irqsave(&dev_priv->hw_lock, irq_flags); 573 outl(offset, dev_priv->io_start + VMWGFX_INDEX_PORT); 574 val = inl(dev_priv->io_start + VMWGFX_VALUE_PORT); 575 spin_unlock_irqrestore(&dev_priv->hw_lock, irq_flags); 576 577 return val; 578 } 579 580 extern void vmw_svga_enable(struct vmw_private *dev_priv); 581 extern void vmw_svga_disable(struct vmw_private *dev_priv); 582 583 584 /** 585 * GMR utilities - vmwgfx_gmr.c 586 */ 587 588 extern int vmw_gmr_bind(struct vmw_private *dev_priv, 589 const struct vmw_sg_table *vsgt, 590 unsigned long num_pages, 591 int gmr_id); 592 extern void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id); 593 594 /** 595 * Resource utilities - vmwgfx_resource.c 596 */ 597 struct vmw_user_resource_conv; 598 599 extern void vmw_resource_unreference(struct vmw_resource **p_res); 600 extern struct vmw_resource *vmw_resource_reference(struct vmw_resource *res); 601 extern struct vmw_resource * 602 vmw_resource_reference_unless_doomed(struct vmw_resource *res); 603 extern int vmw_resource_validate(struct vmw_resource *res); 604 extern int vmw_resource_reserve(struct vmw_resource *res, bool interruptible, 605 bool no_backup); 606 extern bool vmw_resource_needs_backup(const struct vmw_resource *res); 607 extern int vmw_user_lookup_handle(struct vmw_private *dev_priv, 608 struct ttm_object_file *tfile, 609 uint32_t handle, 610 struct vmw_surface **out_surf, 611 struct vmw_dma_buffer **out_buf); 612 extern int vmw_user_resource_lookup_handle( 613 struct vmw_private *dev_priv, 614 struct ttm_object_file *tfile, 615 uint32_t handle, 616 const struct vmw_user_resource_conv *converter, 617 struct vmw_resource **p_res); 618 extern void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo); 619 extern int vmw_dmabuf_init(struct vmw_private *dev_priv, 620 struct vmw_dma_buffer *vmw_bo, 621 size_t size, struct ttm_placement *placement, 622 bool interuptable, 623 void (*bo_free) (struct ttm_buffer_object *bo)); 624 extern int vmw_user_dmabuf_verify_access(struct ttm_buffer_object *bo, 625 struct ttm_object_file *tfile); 626 extern int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv, 627 struct ttm_object_file *tfile, 628 uint32_t size, 629 bool shareable, 630 uint32_t *handle, 631 struct vmw_dma_buffer **p_dma_buf, 632 struct ttm_base_object **p_base); 633 extern int vmw_user_dmabuf_reference(struct ttm_object_file *tfile, 634 struct vmw_dma_buffer *dma_buf, 635 uint32_t *handle); 636 extern int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data, 637 struct drm_file *file_priv); 638 extern int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data, 639 struct drm_file *file_priv); 640 extern int vmw_user_dmabuf_synccpu_ioctl(struct drm_device *dev, void *data, 641 struct drm_file *file_priv); 642 extern uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo, 643 uint32_t cur_validate_node); 644 extern void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo); 645 extern int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile, 646 uint32_t id, struct vmw_dma_buffer **out, 647 struct ttm_base_object **base); 648 extern int vmw_stream_claim_ioctl(struct drm_device *dev, void *data, 649 struct drm_file *file_priv); 650 extern int vmw_stream_unref_ioctl(struct drm_device *dev, void *data, 651 struct drm_file *file_priv); 652 extern int vmw_user_stream_lookup(struct vmw_private *dev_priv, 653 struct ttm_object_file *tfile, 654 uint32_t *inout_id, 655 struct vmw_resource **out); 656 extern void vmw_resource_unreserve(struct vmw_resource *res, 657 bool switch_backup, 658 struct vmw_dma_buffer *new_backup, 659 unsigned long new_backup_offset); 660 extern void vmw_resource_move_notify(struct ttm_buffer_object *bo, 661 struct ttm_mem_reg *mem); 662 extern void vmw_query_move_notify(struct ttm_buffer_object *bo, 663 struct ttm_mem_reg *mem); 664 extern int vmw_query_readback_all(struct vmw_dma_buffer *dx_query_mob); 665 extern void vmw_fence_single_bo(struct ttm_buffer_object *bo, 666 struct vmw_fence_obj *fence); 667 extern void vmw_resource_evict_all(struct vmw_private *dev_priv); 668 669 /** 670 * DMA buffer helper routines - vmwgfx_dmabuf.c 671 */ 672 extern int vmw_dmabuf_pin_in_placement(struct vmw_private *vmw_priv, 673 struct vmw_dma_buffer *bo, 674 struct ttm_placement *placement, 675 bool interruptible); 676 extern int vmw_dmabuf_pin_in_vram(struct vmw_private *dev_priv, 677 struct vmw_dma_buffer *buf, 678 bool interruptible); 679 extern int vmw_dmabuf_pin_in_vram_or_gmr(struct vmw_private *dev_priv, 680 struct vmw_dma_buffer *buf, 681 bool interruptible); 682 extern int vmw_dmabuf_pin_in_start_of_vram(struct vmw_private *vmw_priv, 683 struct vmw_dma_buffer *bo, 684 bool interruptible); 685 extern int vmw_dmabuf_unpin(struct vmw_private *vmw_priv, 686 struct vmw_dma_buffer *bo, 687 bool interruptible); 688 extern void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *buf, 689 SVGAGuestPtr *ptr); 690 extern void vmw_bo_pin_reserved(struct vmw_dma_buffer *bo, bool pin); 691 692 /** 693 * Misc Ioctl functionality - vmwgfx_ioctl.c 694 */ 695 696 extern int vmw_getparam_ioctl(struct drm_device *dev, void *data, 697 struct drm_file *file_priv); 698 extern int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, 699 struct drm_file *file_priv); 700 extern int vmw_present_ioctl(struct drm_device *dev, void *data, 701 struct drm_file *file_priv); 702 extern int vmw_present_readback_ioctl(struct drm_device *dev, void *data, 703 struct drm_file *file_priv); 704 extern unsigned int vmw_fops_poll(struct file *filp, 705 struct poll_table_struct *wait); 706 extern ssize_t vmw_fops_read(struct file *filp, char __user *buffer, 707 size_t count, loff_t *offset); 708 709 /** 710 * Fifo utilities - vmwgfx_fifo.c 711 */ 712 713 extern int vmw_fifo_init(struct vmw_private *dev_priv, 714 struct vmw_fifo_state *fifo); 715 extern void vmw_fifo_release(struct vmw_private *dev_priv, 716 struct vmw_fifo_state *fifo); 717 extern void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes); 718 extern void * 719 vmw_fifo_reserve_dx(struct vmw_private *dev_priv, uint32_t bytes, int ctx_id); 720 extern void vmw_fifo_commit(struct vmw_private *dev_priv, uint32_t bytes); 721 extern void vmw_fifo_commit_flush(struct vmw_private *dev_priv, uint32_t bytes); 722 extern int vmw_fifo_send_fence(struct vmw_private *dev_priv, 723 uint32_t *seqno); 724 extern void vmw_fifo_ping_host_locked(struct vmw_private *, uint32_t reason); 725 extern void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason); 726 extern bool vmw_fifo_have_3d(struct vmw_private *dev_priv); 727 extern bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv); 728 extern int vmw_fifo_emit_dummy_query(struct vmw_private *dev_priv, 729 uint32_t cid); 730 extern int vmw_fifo_flush(struct vmw_private *dev_priv, 731 bool interruptible); 732 733 /** 734 * TTM glue - vmwgfx_ttm_glue.c 735 */ 736 737 extern int vmw_ttm_global_init(struct vmw_private *dev_priv); 738 extern void vmw_ttm_global_release(struct vmw_private *dev_priv); 739 extern int vmw_mmap(struct file *filp, struct vm_area_struct *vma); 740 741 /** 742 * TTM buffer object driver - vmwgfx_buffer.c 743 */ 744 745 extern const size_t vmw_tt_size; 746 extern struct ttm_placement vmw_vram_placement; 747 extern struct ttm_placement vmw_vram_ne_placement; 748 extern struct ttm_placement vmw_vram_sys_placement; 749 extern struct ttm_placement vmw_vram_gmr_placement; 750 extern struct ttm_placement vmw_vram_gmr_ne_placement; 751 extern struct ttm_placement vmw_sys_placement; 752 extern struct ttm_placement vmw_sys_ne_placement; 753 extern struct ttm_placement vmw_evictable_placement; 754 extern struct ttm_placement vmw_srf_placement; 755 extern struct ttm_placement vmw_mob_placement; 756 extern struct ttm_placement vmw_mob_ne_placement; 757 extern struct ttm_bo_driver vmw_bo_driver; 758 extern int vmw_dma_quiescent(struct drm_device *dev); 759 extern int vmw_bo_map_dma(struct ttm_buffer_object *bo); 760 extern void vmw_bo_unmap_dma(struct ttm_buffer_object *bo); 761 extern const struct vmw_sg_table * 762 vmw_bo_sg_table(struct ttm_buffer_object *bo); 763 extern void vmw_piter_start(struct vmw_piter *viter, 764 const struct vmw_sg_table *vsgt, 765 unsigned long p_offs); 766 767 /** 768 * vmw_piter_next - Advance the iterator one page. 769 * 770 * @viter: Pointer to the iterator to advance. 771 * 772 * Returns false if past the list of pages, true otherwise. 773 */ 774 static inline bool vmw_piter_next(struct vmw_piter *viter) 775 { 776 return viter->next(viter); 777 } 778 779 /** 780 * vmw_piter_dma_addr - Return the DMA address of the current page. 781 * 782 * @viter: Pointer to the iterator 783 * 784 * Returns the DMA address of the page pointed to by @viter. 785 */ 786 static inline dma_addr_t vmw_piter_dma_addr(struct vmw_piter *viter) 787 { 788 return viter->dma_address(viter); 789 } 790 791 /** 792 * vmw_piter_page - Return a pointer to the current page. 793 * 794 * @viter: Pointer to the iterator 795 * 796 * Returns the DMA address of the page pointed to by @viter. 797 */ 798 static inline struct page *vmw_piter_page(struct vmw_piter *viter) 799 { 800 return viter->page(viter); 801 } 802 803 /** 804 * Command submission - vmwgfx_execbuf.c 805 */ 806 807 extern int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data, 808 struct drm_file *file_priv, size_t size); 809 extern int vmw_execbuf_process(struct drm_file *file_priv, 810 struct vmw_private *dev_priv, 811 void __user *user_commands, 812 void *kernel_commands, 813 uint32_t command_size, 814 uint64_t throttle_us, 815 uint32_t dx_context_handle, 816 struct drm_vmw_fence_rep __user 817 *user_fence_rep, 818 struct vmw_fence_obj **out_fence); 819 extern void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv, 820 struct vmw_fence_obj *fence); 821 extern void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv); 822 823 extern int vmw_execbuf_fence_commands(struct drm_file *file_priv, 824 struct vmw_private *dev_priv, 825 struct vmw_fence_obj **p_fence, 826 uint32_t *p_handle); 827 extern void vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv, 828 struct vmw_fpriv *vmw_fp, 829 int ret, 830 struct drm_vmw_fence_rep __user 831 *user_fence_rep, 832 struct vmw_fence_obj *fence, 833 uint32_t fence_handle); 834 extern int vmw_validate_single_buffer(struct vmw_private *dev_priv, 835 struct ttm_buffer_object *bo, 836 bool interruptible, 837 bool validate_as_mob); 838 839 840 /** 841 * IRQs and wating - vmwgfx_irq.c 842 */ 843 844 extern irqreturn_t vmw_irq_handler(int irq, void *arg); 845 extern int vmw_wait_seqno(struct vmw_private *dev_priv, bool lazy, 846 uint32_t seqno, bool interruptible, 847 unsigned long timeout); 848 extern void vmw_irq_preinstall(struct drm_device *dev); 849 extern int vmw_irq_postinstall(struct drm_device *dev); 850 extern void vmw_irq_uninstall(struct drm_device *dev); 851 extern bool vmw_seqno_passed(struct vmw_private *dev_priv, 852 uint32_t seqno); 853 extern int vmw_fallback_wait(struct vmw_private *dev_priv, 854 bool lazy, 855 bool fifo_idle, 856 uint32_t seqno, 857 bool interruptible, 858 unsigned long timeout); 859 extern void vmw_update_seqno(struct vmw_private *dev_priv, 860 struct vmw_fifo_state *fifo_state); 861 extern void vmw_seqno_waiter_add(struct vmw_private *dev_priv); 862 extern void vmw_seqno_waiter_remove(struct vmw_private *dev_priv); 863 extern void vmw_goal_waiter_add(struct vmw_private *dev_priv); 864 extern void vmw_goal_waiter_remove(struct vmw_private *dev_priv); 865 extern void vmw_generic_waiter_add(struct vmw_private *dev_priv, u32 flag, 866 int *waiter_count); 867 extern void vmw_generic_waiter_remove(struct vmw_private *dev_priv, 868 u32 flag, int *waiter_count); 869 870 /** 871 * Rudimentary fence-like objects currently used only for throttling - 872 * vmwgfx_marker.c 873 */ 874 875 extern void vmw_marker_queue_init(struct vmw_marker_queue *queue); 876 extern void vmw_marker_queue_takedown(struct vmw_marker_queue *queue); 877 extern int vmw_marker_push(struct vmw_marker_queue *queue, 878 uint32_t seqno); 879 extern int vmw_marker_pull(struct vmw_marker_queue *queue, 880 uint32_t signaled_seqno); 881 extern int vmw_wait_lag(struct vmw_private *dev_priv, 882 struct vmw_marker_queue *queue, uint32_t us); 883 884 /** 885 * Kernel framebuffer - vmwgfx_fb.c 886 */ 887 888 int vmw_fb_init(struct vmw_private *vmw_priv); 889 int vmw_fb_close(struct vmw_private *dev_priv); 890 int vmw_fb_off(struct vmw_private *vmw_priv); 891 int vmw_fb_on(struct vmw_private *vmw_priv); 892 893 /** 894 * Kernel modesetting - vmwgfx_kms.c 895 */ 896 897 int vmw_kms_init(struct vmw_private *dev_priv); 898 int vmw_kms_close(struct vmw_private *dev_priv); 899 int vmw_kms_save_vga(struct vmw_private *vmw_priv); 900 int vmw_kms_restore_vga(struct vmw_private *vmw_priv); 901 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data, 902 struct drm_file *file_priv); 903 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv); 904 void vmw_kms_cursor_snoop(struct vmw_surface *srf, 905 struct ttm_object_file *tfile, 906 struct ttm_buffer_object *bo, 907 SVGA3dCmdHeader *header); 908 int vmw_kms_write_svga(struct vmw_private *vmw_priv, 909 unsigned width, unsigned height, unsigned pitch, 910 unsigned bpp, unsigned depth); 911 void vmw_kms_idle_workqueues(struct vmw_master *vmaster); 912 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv, 913 uint32_t pitch, 914 uint32_t height); 915 u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe); 916 int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe); 917 void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe); 918 int vmw_kms_present(struct vmw_private *dev_priv, 919 struct drm_file *file_priv, 920 struct vmw_framebuffer *vfb, 921 struct vmw_surface *surface, 922 uint32_t sid, int32_t destX, int32_t destY, 923 struct drm_vmw_rect *clips, 924 uint32_t num_clips); 925 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data, 926 struct drm_file *file_priv); 927 void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv); 928 929 int vmw_dumb_create(struct drm_file *file_priv, 930 struct drm_device *dev, 931 struct drm_mode_create_dumb *args); 932 933 int vmw_dumb_map_offset(struct drm_file *file_priv, 934 struct drm_device *dev, uint32_t handle, 935 uint64_t *offset); 936 int vmw_dumb_destroy(struct drm_file *file_priv, 937 struct drm_device *dev, 938 uint32_t handle); 939 extern int vmw_resource_pin(struct vmw_resource *res, bool interruptible); 940 extern void vmw_resource_unpin(struct vmw_resource *res); 941 extern enum vmw_res_type vmw_res_type(const struct vmw_resource *res); 942 943 /** 944 * Overlay control - vmwgfx_overlay.c 945 */ 946 947 int vmw_overlay_init(struct vmw_private *dev_priv); 948 int vmw_overlay_close(struct vmw_private *dev_priv); 949 int vmw_overlay_ioctl(struct drm_device *dev, void *data, 950 struct drm_file *file_priv); 951 int vmw_overlay_stop_all(struct vmw_private *dev_priv); 952 int vmw_overlay_resume_all(struct vmw_private *dev_priv); 953 int vmw_overlay_pause_all(struct vmw_private *dev_priv); 954 int vmw_overlay_claim(struct vmw_private *dev_priv, uint32_t *out); 955 int vmw_overlay_unref(struct vmw_private *dev_priv, uint32_t stream_id); 956 int vmw_overlay_num_overlays(struct vmw_private *dev_priv); 957 int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv); 958 959 /** 960 * GMR Id manager 961 */ 962 963 extern const struct ttm_mem_type_manager_func vmw_gmrid_manager_func; 964 965 /** 966 * Prime - vmwgfx_prime.c 967 */ 968 969 extern const struct dma_buf_ops vmw_prime_dmabuf_ops; 970 extern int vmw_prime_fd_to_handle(struct drm_device *dev, 971 struct drm_file *file_priv, 972 int fd, u32 *handle); 973 extern int vmw_prime_handle_to_fd(struct drm_device *dev, 974 struct drm_file *file_priv, 975 uint32_t handle, uint32_t flags, 976 int *prime_fd); 977 978 /* 979 * MemoryOBject management - vmwgfx_mob.c 980 */ 981 struct vmw_mob; 982 extern int vmw_mob_bind(struct vmw_private *dev_priv, struct vmw_mob *mob, 983 const struct vmw_sg_table *vsgt, 984 unsigned long num_data_pages, int32_t mob_id); 985 extern void vmw_mob_unbind(struct vmw_private *dev_priv, 986 struct vmw_mob *mob); 987 extern void vmw_mob_destroy(struct vmw_mob *mob); 988 extern struct vmw_mob *vmw_mob_create(unsigned long data_pages); 989 extern int vmw_otables_setup(struct vmw_private *dev_priv); 990 extern void vmw_otables_takedown(struct vmw_private *dev_priv); 991 992 /* 993 * Context management - vmwgfx_context.c 994 */ 995 996 extern const struct vmw_user_resource_conv *user_context_converter; 997 998 extern int vmw_context_check(struct vmw_private *dev_priv, 999 struct ttm_object_file *tfile, 1000 int id, 1001 struct vmw_resource **p_res); 1002 extern int vmw_context_define_ioctl(struct drm_device *dev, void *data, 1003 struct drm_file *file_priv); 1004 extern int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data, 1005 struct drm_file *file_priv); 1006 extern int vmw_context_destroy_ioctl(struct drm_device *dev, void *data, 1007 struct drm_file *file_priv); 1008 extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx); 1009 extern struct vmw_cmdbuf_res_manager * 1010 vmw_context_res_man(struct vmw_resource *ctx); 1011 extern struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx, 1012 SVGACOTableType cotable_type); 1013 extern struct list_head *vmw_context_binding_list(struct vmw_resource *ctx); 1014 struct vmw_ctx_binding_state; 1015 extern struct vmw_ctx_binding_state * 1016 vmw_context_binding_state(struct vmw_resource *ctx); 1017 extern void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx, 1018 bool readback); 1019 extern int vmw_context_bind_dx_query(struct vmw_resource *ctx_res, 1020 struct vmw_dma_buffer *mob); 1021 extern struct vmw_dma_buffer * 1022 vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res); 1023 1024 1025 /* 1026 * Surface management - vmwgfx_surface.c 1027 */ 1028 1029 extern const struct vmw_user_resource_conv *user_surface_converter; 1030 1031 extern void vmw_surface_res_free(struct vmw_resource *res); 1032 extern int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data, 1033 struct drm_file *file_priv); 1034 extern int vmw_surface_define_ioctl(struct drm_device *dev, void *data, 1035 struct drm_file *file_priv); 1036 extern int vmw_surface_reference_ioctl(struct drm_device *dev, void *data, 1037 struct drm_file *file_priv); 1038 extern int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data, 1039 struct drm_file *file_priv); 1040 extern int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data, 1041 struct drm_file *file_priv); 1042 extern int vmw_surface_check(struct vmw_private *dev_priv, 1043 struct ttm_object_file *tfile, 1044 uint32_t handle, int *id); 1045 extern int vmw_surface_validate(struct vmw_private *dev_priv, 1046 struct vmw_surface *srf); 1047 int vmw_surface_gb_priv_define(struct drm_device *dev, 1048 uint32_t user_accounting_size, 1049 uint32_t svga3d_flags, 1050 SVGA3dSurfaceFormat format, 1051 bool for_scanout, 1052 uint32_t num_mip_levels, 1053 uint32_t multisample_count, 1054 uint32_t array_size, 1055 struct drm_vmw_size size, 1056 struct vmw_surface **srf_out); 1057 1058 /* 1059 * Shader management - vmwgfx_shader.c 1060 */ 1061 1062 extern const struct vmw_user_resource_conv *user_shader_converter; 1063 1064 extern int vmw_shader_define_ioctl(struct drm_device *dev, void *data, 1065 struct drm_file *file_priv); 1066 extern int vmw_shader_destroy_ioctl(struct drm_device *dev, void *data, 1067 struct drm_file *file_priv); 1068 extern int vmw_compat_shader_add(struct vmw_private *dev_priv, 1069 struct vmw_cmdbuf_res_manager *man, 1070 u32 user_key, const void *bytecode, 1071 SVGA3dShaderType shader_type, 1072 size_t size, 1073 struct list_head *list); 1074 extern int vmw_shader_remove(struct vmw_cmdbuf_res_manager *man, 1075 u32 user_key, SVGA3dShaderType shader_type, 1076 struct list_head *list); 1077 extern int vmw_dx_shader_add(struct vmw_cmdbuf_res_manager *man, 1078 struct vmw_resource *ctx, 1079 u32 user_key, 1080 SVGA3dShaderType shader_type, 1081 struct list_head *list); 1082 extern void vmw_dx_shader_cotable_list_scrub(struct vmw_private *dev_priv, 1083 struct list_head *list, 1084 bool readback); 1085 1086 extern struct vmw_resource * 1087 vmw_shader_lookup(struct vmw_cmdbuf_res_manager *man, 1088 u32 user_key, SVGA3dShaderType shader_type); 1089 1090 /* 1091 * Command buffer managed resources - vmwgfx_cmdbuf_res.c 1092 */ 1093 1094 extern struct vmw_cmdbuf_res_manager * 1095 vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv); 1096 extern void vmw_cmdbuf_res_man_destroy(struct vmw_cmdbuf_res_manager *man); 1097 extern size_t vmw_cmdbuf_res_man_size(void); 1098 extern struct vmw_resource * 1099 vmw_cmdbuf_res_lookup(struct vmw_cmdbuf_res_manager *man, 1100 enum vmw_cmdbuf_res_type res_type, 1101 u32 user_key); 1102 extern void vmw_cmdbuf_res_revert(struct list_head *list); 1103 extern void vmw_cmdbuf_res_commit(struct list_head *list); 1104 extern int vmw_cmdbuf_res_add(struct vmw_cmdbuf_res_manager *man, 1105 enum vmw_cmdbuf_res_type res_type, 1106 u32 user_key, 1107 struct vmw_resource *res, 1108 struct list_head *list); 1109 extern int vmw_cmdbuf_res_remove(struct vmw_cmdbuf_res_manager *man, 1110 enum vmw_cmdbuf_res_type res_type, 1111 u32 user_key, 1112 struct list_head *list, 1113 struct vmw_resource **res); 1114 1115 /* 1116 * COTable management - vmwgfx_cotable.c 1117 */ 1118 extern const SVGACOTableType vmw_cotable_scrub_order[]; 1119 extern struct vmw_resource *vmw_cotable_alloc(struct vmw_private *dev_priv, 1120 struct vmw_resource *ctx, 1121 u32 type); 1122 extern int vmw_cotable_notify(struct vmw_resource *res, int id); 1123 extern int vmw_cotable_scrub(struct vmw_resource *res, bool readback); 1124 extern void vmw_cotable_add_resource(struct vmw_resource *ctx, 1125 struct list_head *head); 1126 1127 /* 1128 * Command buffer managerment vmwgfx_cmdbuf.c 1129 */ 1130 struct vmw_cmdbuf_man; 1131 struct vmw_cmdbuf_header; 1132 1133 extern struct vmw_cmdbuf_man * 1134 vmw_cmdbuf_man_create(struct vmw_private *dev_priv); 1135 extern int vmw_cmdbuf_set_pool_size(struct vmw_cmdbuf_man *man, 1136 size_t size, size_t default_size); 1137 extern void vmw_cmdbuf_remove_pool(struct vmw_cmdbuf_man *man); 1138 extern void vmw_cmdbuf_man_destroy(struct vmw_cmdbuf_man *man); 1139 extern int vmw_cmdbuf_idle(struct vmw_cmdbuf_man *man, bool interruptible, 1140 unsigned long timeout); 1141 extern void *vmw_cmdbuf_reserve(struct vmw_cmdbuf_man *man, size_t size, 1142 int ctx_id, bool interruptible, 1143 struct vmw_cmdbuf_header *header); 1144 extern void vmw_cmdbuf_commit(struct vmw_cmdbuf_man *man, size_t size, 1145 struct vmw_cmdbuf_header *header, 1146 bool flush); 1147 extern void vmw_cmdbuf_tasklet_schedule(struct vmw_cmdbuf_man *man); 1148 extern void *vmw_cmdbuf_alloc(struct vmw_cmdbuf_man *man, 1149 size_t size, bool interruptible, 1150 struct vmw_cmdbuf_header **p_header); 1151 extern void vmw_cmdbuf_header_free(struct vmw_cmdbuf_header *header); 1152 extern int vmw_cmdbuf_cur_flush(struct vmw_cmdbuf_man *man, 1153 bool interruptible); 1154 1155 1156 /** 1157 * Inline helper functions 1158 */ 1159 1160 static inline void vmw_surface_unreference(struct vmw_surface **srf) 1161 { 1162 struct vmw_surface *tmp_srf = *srf; 1163 struct vmw_resource *res = &tmp_srf->res; 1164 *srf = NULL; 1165 1166 vmw_resource_unreference(&res); 1167 } 1168 1169 static inline struct vmw_surface *vmw_surface_reference(struct vmw_surface *srf) 1170 { 1171 (void) vmw_resource_reference(&srf->res); 1172 return srf; 1173 } 1174 1175 static inline void vmw_dmabuf_unreference(struct vmw_dma_buffer **buf) 1176 { 1177 struct vmw_dma_buffer *tmp_buf = *buf; 1178 1179 *buf = NULL; 1180 if (tmp_buf != NULL) { 1181 struct ttm_buffer_object *bo = &tmp_buf->base; 1182 1183 ttm_bo_unref(&bo); 1184 } 1185 } 1186 1187 static inline struct vmw_dma_buffer *vmw_dmabuf_reference(struct vmw_dma_buffer *buf) 1188 { 1189 if (ttm_bo_reference(&buf->base)) 1190 return buf; 1191 return NULL; 1192 } 1193 1194 static inline struct ttm_mem_global *vmw_mem_glob(struct vmw_private *dev_priv) 1195 { 1196 return (struct ttm_mem_global *) dev_priv->mem_global_ref.object; 1197 } 1198 1199 static inline void vmw_fifo_resource_inc(struct vmw_private *dev_priv) 1200 { 1201 atomic_inc(&dev_priv->num_fifo_resources); 1202 } 1203 1204 static inline void vmw_fifo_resource_dec(struct vmw_private *dev_priv) 1205 { 1206 atomic_dec(&dev_priv->num_fifo_resources); 1207 } 1208 1209 /** 1210 * vmw_mmio_read - Perform a MMIO read from volatile memory 1211 * 1212 * @addr: The address to read from 1213 * 1214 * This function is intended to be equivalent to ioread32() on 1215 * memremap'd memory, but without byteswapping. 1216 */ 1217 static inline u32 vmw_mmio_read(u32 *addr) 1218 { 1219 return READ_ONCE(*addr); 1220 } 1221 1222 /** 1223 * vmw_mmio_write - Perform a MMIO write to volatile memory 1224 * 1225 * @addr: The address to write to 1226 * 1227 * This function is intended to be equivalent to iowrite32 on 1228 * memremap'd memory, but without byteswapping. 1229 */ 1230 static inline void vmw_mmio_write(u32 value, u32 *addr) 1231 { 1232 WRITE_ONCE(*addr, value); 1233 } 1234 #endif 1235