1/** 2 * \file drmP.h 3 * Private header for Direct Rendering Manager 4 * 5 * \author Rickard E. (Rik) Faith <faith@valinux.com> 6 * \author Gareth Hughes <gareth@valinux.com> 7 */ 8 9/* 10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 12 * Copyright (c) 2009-2010, Code Aurora Forum. 13 * All rights reserved. 14 * 15 * Permission is hereby granted, free of charge, to any person obtaining a 16 * copy of this software and associated documentation files (the "Software"), 17 * to deal in the Software without restriction, including without limitation 18 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 19 * and/or sell copies of the Software, and to permit persons to whom the 20 * Software is furnished to do so, subject to the following conditions: 21 * 22 * The above copyright notice and this permission notice (including the next 23 * paragraph) shall be included in all copies or substantial portions of the 24 * Software. 25 * 26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 29 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 30 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 31 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 32 * OTHER DEALINGS IN THE SOFTWARE. 33 */ 34 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD$"); 37 38#ifndef _DRM_P_H_ 39#define _DRM_P_H_ 40 41#if defined(_KERNEL) || defined(__KERNEL__) 42 43#include <sys/param.h> 44#include <sys/queue.h> 45#include <sys/malloc.h> 46#include <sys/kernel.h> 47#include <sys/ktr.h> 48#include <sys/module.h> 49#include <sys/systm.h> 50#include <sys/conf.h> 51#include <sys/sglist.h> 52#include <sys/stat.h> 53#include <sys/priv.h> 54#include <sys/proc.h> 55#include <sys/lock.h> 56#include <sys/fcntl.h> 57#include <sys/uio.h> 58#include <sys/filio.h> 59#include <sys/rwlock.h> 60#include <sys/selinfo.h> 61#include <sys/sysctl.h> 62#include <sys/bus.h> 63#include <sys/queue.h> 64#include <sys/signalvar.h> 65#include <sys/poll.h> 66#include <sys/sbuf.h> 67#include <sys/taskqueue.h> 68#include <sys/tree.h> 69#include <vm/vm.h> 70#include <vm/pmap.h> 71#include <vm/vm_extern.h> 72#include <vm/vm_kern.h> 73#include <vm/vm_map.h> 74#include <vm/vm_object.h> 75#include <vm/vm_page.h> 76#include <vm/vm_pager.h> 77#include <vm/vm_param.h> 78#include <vm/vm_phys.h> 79#include <machine/param.h> 80#include <machine/pmap.h> 81#include <machine/bus.h> 82#include <machine/resource.h> 83#if defined(__i386__) || defined(__amd64__) 84#include <machine/specialreg.h> 85#endif 86#include <machine/sysarch.h> 87#include <sys/endian.h> 88#include <sys/mman.h> 89#include <sys/rman.h> 90#include <sys/memrange.h> 91#include <dev/agp/agpvar.h> 92#include <sys/agpio.h> 93#include <sys/mutex.h> 94#include <dev/pci/pcivar.h> 95#include <dev/pci/pcireg.h> 96#include <sys/selinfo.h> 97#include <sys/bus.h> 98 99#include <dev/drm2/drm.h> 100#include <dev/drm2/drm_sarea.h> 101 102#include <dev/drm2/drm_atomic.h> 103#include <dev/drm2/drm_linux_list.h> 104#include <dev/drm2/drm_gem_names.h> 105 106#include <dev/drm2/drm_os_freebsd.h> 107 108#if defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)) 109#define __OS_HAS_AGP 1 110#else 111#define __OS_HAS_AGP 0 112#endif 113#if defined(CONFIG_MTRR) 114#define __OS_HAS_MTRR 1 115#else 116#define __OS_HAS_MTRR 0 117#endif 118 119struct drm_file; 120struct drm_device; 121 122#include <dev/drm2/drm_hashtab.h> 123#include <dev/drm2/drm_mm.h> 124 125#include "opt_compat.h" 126#include "opt_drm.h" 127#include "opt_syscons.h" 128#ifdef DRM_DEBUG 129#undef DRM_DEBUG 130#define DRM_DEBUG_DEFAULT_ON 1 131#endif /* DRM_DEBUG */ 132 133#define DRM_DEBUGBITS_DEBUG 0x1 134#define DRM_DEBUGBITS_KMS 0x2 135#define DRM_DEBUGBITS_FAILED_IOCTL 0x4 136 137#undef DRM_LINUX 138#define DRM_LINUX 0 139 140/***********************************************************************/ 141/** \name DRM template customization defaults */ 142/*@{*/ 143 144/* driver capabilities and requirements mask */ 145#define DRIVER_USE_AGP 0x1 146#define DRIVER_REQUIRE_AGP 0x2 147#define DRIVER_USE_MTRR 0x4 148#define DRIVER_PCI_DMA 0x8 149#define DRIVER_SG 0x10 150#define DRIVER_HAVE_DMA 0x20 151#define DRIVER_HAVE_IRQ 0x40 152#define DRIVER_IRQ_SHARED 0x80 153#define DRIVER_IRQ_VBL 0x100 154#define DRIVER_DMA_QUEUE 0x200 155#define DRIVER_FB_DMA 0x400 156#define DRIVER_IRQ_VBL2 0x800 157#define DRIVER_GEM 0x1000 158#define DRIVER_MODESET 0x2000 159#define DRIVER_PRIME 0x4000 160 161#define DRIVER_BUS_PCI 0x1 162#define DRIVER_BUS_PLATFORM 0x2 163#define DRIVER_BUS_USB 0x3 164 165/***********************************************************************/ 166/** \name Begin the DRM... */ 167/*@{*/ 168 169#define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then 170 also include looping detection. */ 171 172#define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */ 173#define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */ 174#define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */ 175#define DRM_LOOPING_LIMIT 5000000 176#define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */ 177#define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */ 178 179#define DRM_FLAG_DEBUG 0x01 180 181#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8) 182#define DRM_MAP_HASH_OFFSET 0x10000000 183 184/*@}*/ 185 186/***********************************************************************/ 187/** \name Macros to make printk easier */ 188/*@{*/ 189 190/** 191 * Error output. 192 * 193 * \param fmt printf() like format string. 194 * \param arg arguments 195 */ 196#define DRM_ERROR(fmt, ...) \ 197 printf("error: [" DRM_NAME ":pid%d:%s] *ERROR* " fmt, \ 198 DRM_CURRENTPID, __func__ , ##__VA_ARGS__) 199 200#define DRM_WARNING(fmt, ...) printf("warning: [" DRM_NAME "] " fmt , ##__VA_ARGS__) 201#define DRM_INFO(fmt, ...) printf("info: [" DRM_NAME "] " fmt , ##__VA_ARGS__) 202 203/** 204 * Debug output. 205 * 206 * \param fmt printf() like format string. 207 * \param arg arguments 208 */ 209#define DRM_DEBUG(fmt, ...) do { \ 210 if ((drm_debug & DRM_DEBUGBITS_DEBUG) != 0) \ 211 printf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID, \ 212 __func__ , ##__VA_ARGS__); \ 213} while (0) 214 215#define DRM_DEBUG_KMS(fmt, ...) do { \ 216 if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \ 217 printf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\ 218 __func__ , ##__VA_ARGS__); \ 219} while (0) 220 221#define DRM_DEBUG_DRIVER(fmt, ...) do { \ 222 if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \ 223 printf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\ 224 __func__ , ##__VA_ARGS__); \ 225} while (0) 226 227/*@}*/ 228 229/***********************************************************************/ 230/** \name Internal types and structures */ 231/*@{*/ 232 233#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x) 234 235#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1)) 236#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x)) 237 238#define DRM_IF_VERSION(maj, min) (maj << 16 | min) 239 240/** 241 * Test that the hardware lock is held by the caller, returning otherwise. 242 * 243 * \param dev DRM device. 244 * \param filp file pointer of the caller. 245 */ 246#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \ 247do { \ 248 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \ 249 _file_priv->master->lock.file_priv != _file_priv) { \ 250 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\ 251 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\ 252 _file_priv->master->lock.file_priv, _file_priv); \ 253 return -EINVAL; \ 254 } \ 255} while (0) 256 257/** 258 * Ioctl function type. 259 * 260 * \param inode device inode. 261 * \param file_priv DRM file private pointer. 262 * \param cmd command. 263 * \param arg argument. 264 */ 265typedef int drm_ioctl_t(struct drm_device *dev, void *data, 266 struct drm_file *file_priv); 267 268#define DRM_IOCTL_NR(n) ((n) & 0xff) 269#define DRM_MAJOR 226 270 271#define DRM_AUTH 0x1 272#define DRM_MASTER 0x2 273#define DRM_ROOT_ONLY 0x4 274#define DRM_CONTROL_ALLOW 0x8 275#define DRM_UNLOCKED 0x10 276 277struct drm_ioctl_desc { 278 unsigned long cmd; 279 int flags; 280 drm_ioctl_t *func; 281 unsigned int cmd_drv; 282}; 283 284/** 285 * Creates a driver or general drm_ioctl_desc array entry for the given 286 * ioctl, for use by drm_ioctl(). 287 */ 288 289#define DRM_IOCTL_DEF(ioctl, _func, _flags) \ 290 [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0} 291 292#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ 293 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl} 294 295struct drm_magic_entry { 296 struct list_head head; 297 struct drm_hash_item hash_item; 298 struct drm_file *priv; 299}; 300 301/** 302 * DMA buffer. 303 */ 304struct drm_buf { 305 int idx; /**< Index into master buflist */ 306 int total; /**< Buffer size */ 307 int order; /**< log-base-2(total) */ 308 int used; /**< Amount of buffer in use (for DMA) */ 309 unsigned long offset; /**< Byte offset (used internally) */ 310 void *address; /**< Address of buffer */ 311 unsigned long bus_address; /**< Bus address of buffer */ 312 struct drm_buf *next; /**< Kernel-only: used for free list */ 313 __volatile__ int waiting; /**< On kernel DMA queue */ 314 __volatile__ int pending; /**< On hardware DMA queue */ 315 struct drm_file *file_priv; /**< Private of holding file descr */ 316 int context; /**< Kernel queue for this buffer */ 317 int while_locked; /**< Dispatch this buffer while locked */ 318 enum { 319 DRM_LIST_NONE = 0, 320 DRM_LIST_FREE = 1, 321 DRM_LIST_WAIT = 2, 322 DRM_LIST_PEND = 3, 323 DRM_LIST_PRIO = 4, 324 DRM_LIST_RECLAIM = 5 325 } list; /**< Which list we're on */ 326 327 int dev_priv_size; /**< Size of buffer private storage */ 328 void *dev_private; /**< Per-buffer private storage */ 329}; 330 331struct drm_freelist { 332 int initialized; /**< Freelist in use */ 333 atomic_t count; /**< Number of free buffers */ 334 struct drm_buf *next; /**< End pointer */ 335 336#ifdef FREEBSD_NOTYET 337 wait_queue_head_t waiting; /**< Processes waiting on free bufs */ 338#endif /* defined(FREEBSD_NOTYET) */ 339 int low_mark; /**< Low water mark */ 340 int high_mark; /**< High water mark */ 341#ifdef FREEBSD_NOTYET 342 atomic_t wfh; /**< If waiting for high mark */ 343 spinlock_t lock; 344#endif /* defined(FREEBSD_NOTYET) */ 345}; 346 347typedef struct drm_dma_handle { 348 void *vaddr; 349 bus_addr_t busaddr; 350 bus_dma_tag_t tag; 351 bus_dmamap_t map; 352} drm_dma_handle_t; 353 354/** 355 * Buffer entry. There is one of this for each buffer size order. 356 */ 357struct drm_buf_entry { 358 int buf_size; /**< size */ 359 int buf_count; /**< number of buffers */ 360 struct drm_buf *buflist; /**< buffer list */ 361 int seg_count; 362 int page_order; 363 struct drm_dma_handle **seglist; 364 365 struct drm_freelist freelist; 366}; 367 368/* Event queued up for userspace to read */ 369struct drm_pending_event { 370 struct drm_event *event; 371 struct list_head link; 372 struct drm_file *file_priv; 373 pid_t pid; /* pid of requester, no guarantee it's valid by the time 374 we deliver the event, for tracing only */ 375 void (*destroy)(struct drm_pending_event *event); 376}; 377 378/* initial implementaton using a linked list - todo hashtab */ 379struct drm_prime_file_private { 380 struct list_head head; 381 struct mtx lock; 382}; 383 384struct drm_file { 385 int authenticated; 386 pid_t pid; 387 uid_t uid; 388 drm_magic_t magic; 389 unsigned long ioctl_count; 390 struct list_head lhead; 391 struct drm_minor *minor; 392 unsigned long lock_count; 393 394 void *driver_priv; 395 struct drm_gem_names object_names; 396 397 int is_master; /* this file private is a master for a minor */ 398 struct drm_master *master; /* master this node is currently associated with 399 N.B. not always minor->master */ 400 struct list_head fbs; 401 402 struct selinfo event_poll; 403 struct list_head event_list; 404 int event_space; 405 406 struct drm_prime_file_private prime; 407}; 408 409/** 410 * Lock data. 411 */ 412struct drm_lock_data { 413 struct drm_hw_lock *hw_lock; /**< Hardware lock */ 414 /** Private of lock holder's file (NULL=kernel) */ 415 struct drm_file *file_priv; 416 wait_queue_head_t lock_queue; /**< Queue of blocked processes */ 417 unsigned long lock_time; /**< Time of last lock in jiffies */ 418 struct mtx spinlock; 419 uint32_t kernel_waiters; 420 uint32_t user_waiters; 421 int idle_has_lock; 422}; 423 424/** 425 * DMA data. 426 */ 427struct drm_device_dma { 428 429 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */ 430 int buf_count; /**< total number of buffers */ 431 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */ 432 int seg_count; 433 int page_count; /**< number of pages */ 434 unsigned long *pagelist; /**< page list */ 435 unsigned long byte_count; 436 enum { 437 _DRM_DMA_USE_AGP = 0x01, 438 _DRM_DMA_USE_SG = 0x02, 439 _DRM_DMA_USE_FB = 0x04, 440 _DRM_DMA_USE_PCI_RO = 0x08 441 } flags; 442 443}; 444 445/** 446 * AGP memory entry. Stored as a doubly linked list. 447 */ 448struct drm_agp_mem { 449 unsigned long handle; /**< handle */ 450 DRM_AGP_MEM *memory; 451 unsigned long bound; /**< address */ 452 int pages; 453 struct list_head head; 454}; 455 456/** 457 * AGP data. 458 * 459 * \sa drm_agp_init() and drm_device::agp. 460 */ 461struct drm_agp_head { 462 DRM_AGP_KERN agp_info; /**< AGP device information */ 463 struct list_head memory; 464 unsigned long mode; /**< AGP mode */ 465 device_t bridge; 466 int enabled; /**< whether the AGP bus as been enabled */ 467 int acquired; /**< whether the AGP device has been acquired */ 468 unsigned long base; 469 int agp_mtrr; 470 int cant_use_aperture; 471}; 472 473/** 474 * Scatter-gather memory. 475 */ 476struct drm_sg_mem { 477 vm_offset_t vaddr; 478 vm_paddr_t *busaddr; 479 vm_pindex_t pages; 480}; 481 482struct drm_sigdata { 483 int context; 484 struct drm_hw_lock *lock; 485}; 486 487/** 488 * Kernel side of a mapping 489 */ 490#define DRM_MAP_HANDLE_BITS (sizeof(void *) == 4 ? 4 : 24) 491#define DRM_MAP_HANDLE_SHIFT (sizeof(void *) * 8 - DRM_MAP_HANDLE_BITS) 492 493struct drm_local_map { 494 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/ 495 unsigned long size; /**< Requested physical size (bytes) */ 496 enum drm_map_type type; /**< Type of memory to map */ 497 enum drm_map_flags flags; /**< Flags */ 498 void *handle; /**< User-space: "Handle" to pass to mmap() */ 499 /**< Kernel-space: kernel-virtual address */ 500 int mtrr; /**< MTRR slot used */ 501 502 /* Private data */ 503 drm_dma_handle_t *dmah; 504}; 505 506typedef struct drm_local_map drm_local_map_t; 507 508/** 509 * Mappings list 510 */ 511struct drm_map_list { 512 struct list_head head; /**< list head */ 513 struct drm_hash_item hash; 514 struct drm_local_map *map; /**< mapping */ 515 uint64_t user_token; 516 struct drm_master *master; 517 struct drm_mm_node *file_offset_node; /**< fake offset */ 518}; 519 520/** 521 * Context handle list 522 */ 523struct drm_ctx_list { 524 struct list_head head; /**< list head */ 525 drm_context_t handle; /**< context handle */ 526 struct drm_file *tag; /**< associated fd private data */ 527}; 528 529/* location of GART table */ 530#define DRM_ATI_GART_MAIN 1 531#define DRM_ATI_GART_FB 2 532 533#define DRM_ATI_GART_PCI 1 534#define DRM_ATI_GART_PCIE 2 535#define DRM_ATI_GART_IGP 3 536 537struct drm_ati_pcigart_info { 538 int gart_table_location; 539 int gart_reg_if; 540 void *addr; 541 dma_addr_t bus_addr; 542 dma_addr_t table_mask; 543 struct drm_dma_handle *table_handle; 544 struct drm_local_map mapping; 545 int table_size; 546 struct drm_dma_handle *dmah; /* handle for ATI PCIGART table FIXME */ 547}; 548 549/** 550 * GEM specific mm private for tracking GEM objects 551 */ 552struct drm_gem_mm { 553 struct unrhdr *idxunr; 554 struct drm_open_hash offset_hash; /**< User token hash table for maps */ 555}; 556 557/** 558 * This structure defines the drm_mm memory object, which will be used by the 559 * DRM for its buffer objects. 560 */ 561struct drm_gem_object { 562 /** Reference count of this object */ 563 u_int refcount; 564 565 /** Handle count of this object. Each handle also holds a reference */ 566 atomic_t handle_count; /* number of handles on this object */ 567 568 /** Related drm device */ 569 struct drm_device *dev; 570 571 /** File representing the shmem storage: filp in Linux parlance */ 572 vm_object_t vm_obj; 573 574 /* Mapping info for this object */ 575 bool on_map; 576 struct drm_hash_item map_list; 577 578 /** 579 * Size of the object, in bytes. Immutable over the object's 580 * lifetime. 581 */ 582 size_t size; 583 584 /** 585 * Global name for this object, starts at 1. 0 means unnamed. 586 * Access is covered by the object_name_lock in the related drm_device 587 */ 588 int name; 589 590 /** 591 * Memory domains. These monitor which caches contain read/write data 592 * related to the object. When transitioning from one set of domains 593 * to another, the driver is called to ensure that caches are suitably 594 * flushed and invalidated 595 */ 596 uint32_t read_domains; 597 uint32_t write_domain; 598 599 /** 600 * While validating an exec operation, the 601 * new read/write domain values are computed here. 602 * They will be transferred to the above values 603 * at the point that any cache flushing occurs 604 */ 605 uint32_t pending_read_domains; 606 uint32_t pending_write_domain; 607 608 void *driver_private; 609 610#ifdef FREEBSD_NOTYET 611 /* dma buf exported from this GEM object */ 612 struct dma_buf *export_dma_buf; 613 614 /* dma buf attachment backing this object */ 615 struct dma_buf_attachment *import_attach; 616#endif /* FREEBSD_NOTYET */ 617}; 618 619#include <dev/drm2/drm_crtc.h> 620 621/* per-master structure */ 622struct drm_master { 623 624 u_int refcount; /* refcount for this master */ 625 626 struct list_head head; /**< each minor contains a list of masters */ 627 struct drm_minor *minor; /**< link back to minor we are a master for */ 628 629 char *unique; /**< Unique identifier: e.g., busid */ 630 int unique_len; /**< Length of unique field */ 631 int unique_size; /**< amount allocated */ 632 633 int blocked; /**< Blocked due to VC switch? */ 634 635 /** \name Authentication */ 636 /*@{ */ 637 struct drm_open_hash magiclist; 638 struct list_head magicfree; 639 /*@} */ 640 641 struct drm_lock_data lock; /**< Information on hardware lock */ 642 643 void *driver_priv; /**< Private structure for driver to use */ 644}; 645 646/* Size of ringbuffer for vblank timestamps. Just double-buffer 647 * in initial implementation. 648 */ 649#define DRM_VBLANKTIME_RBSIZE 2 650 651/* Flags and return codes for get_vblank_timestamp() driver function. */ 652#define DRM_CALLED_FROM_VBLIRQ 1 653#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) 654#define DRM_VBLANKTIME_INVBL (1 << 1) 655 656/* get_scanout_position() return flags */ 657#define DRM_SCANOUTPOS_VALID (1 << 0) 658#define DRM_SCANOUTPOS_INVBL (1 << 1) 659#define DRM_SCANOUTPOS_ACCURATE (1 << 2) 660 661struct drm_bus { 662 int bus_type; 663 int (*get_irq)(struct drm_device *dev); 664 void (*free_irq)(struct drm_device *dev); 665 const char *(*get_name)(struct drm_device *dev); 666 int (*set_busid)(struct drm_device *dev, struct drm_master *master); 667 int (*set_unique)(struct drm_device *dev, struct drm_master *master, 668 struct drm_unique *unique); 669 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p); 670 /* hooks that are for PCI */ 671 int (*agp_init)(struct drm_device *dev); 672 673}; 674 675/** 676 * DRM driver structure. This structure represent the common code for 677 * a family of cards. There will one drm_device for each card present 678 * in this family 679 */ 680struct drm_driver { 681 int (*load) (struct drm_device *, unsigned long flags); 682 int (*firstopen) (struct drm_device *); 683 int (*open) (struct drm_device *, struct drm_file *); 684 void (*preclose) (struct drm_device *, struct drm_file *file_priv); 685 void (*postclose) (struct drm_device *, struct drm_file *); 686 void (*lastclose) (struct drm_device *); 687 int (*unload) (struct drm_device *); 688 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv); 689 int (*dma_quiescent) (struct drm_device *); 690 int (*context_dtor) (struct drm_device *dev, int context); 691 692 /** 693 * get_vblank_counter - get raw hardware vblank counter 694 * @dev: DRM device 695 * @crtc: counter to fetch 696 * 697 * Driver callback for fetching a raw hardware vblank counter for @crtc. 698 * If a device doesn't have a hardware counter, the driver can simply 699 * return the value of drm_vblank_count. The DRM core will account for 700 * missed vblank events while interrupts where disabled based on system 701 * timestamps. 702 * 703 * Wraparound handling and loss of events due to modesetting is dealt 704 * with in the DRM core code. 705 * 706 * RETURNS 707 * Raw vblank counter value. 708 */ 709 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc); 710 711 /** 712 * enable_vblank - enable vblank interrupt events 713 * @dev: DRM device 714 * @crtc: which irq to enable 715 * 716 * Enable vblank interrupts for @crtc. If the device doesn't have 717 * a hardware vblank counter, this routine should be a no-op, since 718 * interrupts will have to stay on to keep the count accurate. 719 * 720 * RETURNS 721 * Zero on success, appropriate errno if the given @crtc's vblank 722 * interrupt cannot be enabled. 723 */ 724 int (*enable_vblank) (struct drm_device *dev, int crtc); 725 726 /** 727 * disable_vblank - disable vblank interrupt events 728 * @dev: DRM device 729 * @crtc: which irq to enable 730 * 731 * Disable vblank interrupts for @crtc. If the device doesn't have 732 * a hardware vblank counter, this routine should be a no-op, since 733 * interrupts will have to stay on to keep the count accurate. 734 */ 735 void (*disable_vblank) (struct drm_device *dev, int crtc); 736 737 /** 738 * Called by \c drm_device_is_agp. Typically used to determine if a 739 * card is really attached to AGP or not. 740 * 741 * \param dev DRM device handle 742 * 743 * \returns 744 * One of three values is returned depending on whether or not the 745 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP 746 * (return of 1), or may or may not be AGP (return of 2). 747 */ 748 int (*device_is_agp) (struct drm_device *dev); 749 750 /** 751 * Called by vblank timestamping code. 752 * 753 * Return the current display scanout position from a crtc. 754 * 755 * \param dev DRM device. 756 * \param crtc Id of the crtc to query. 757 * \param *vpos Target location for current vertical scanout position. 758 * \param *hpos Target location for current horizontal scanout position. 759 * 760 * Returns vpos as a positive number while in active scanout area. 761 * Returns vpos as a negative number inside vblank, counting the number 762 * of scanlines to go until end of vblank, e.g., -1 means "one scanline 763 * until start of active scanout / end of vblank." 764 * 765 * \return Flags, or'ed together as follows: 766 * 767 * DRM_SCANOUTPOS_VALID = Query successful. 768 * DRM_SCANOUTPOS_INVBL = Inside vblank. 769 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of 770 * this flag means that returned position may be offset by a constant 771 * but unknown small number of scanlines wrt. real scanout position. 772 * 773 */ 774 int (*get_scanout_position) (struct drm_device *dev, int crtc, 775 int *vpos, int *hpos); 776 777 /** 778 * Called by \c drm_get_last_vbltimestamp. Should return a precise 779 * timestamp when the most recent VBLANK interval ended or will end. 780 * 781 * Specifically, the timestamp in @vblank_time should correspond as 782 * closely as possible to the time when the first video scanline of 783 * the video frame after the end of VBLANK will start scanning out, 784 * the time immediately after end of the VBLANK interval. If the 785 * @crtc is currently inside VBLANK, this will be a time in the future. 786 * If the @crtc is currently scanning out a frame, this will be the 787 * past start time of the current scanout. This is meant to adhere 788 * to the OpenML OML_sync_control extension specification. 789 * 790 * \param dev dev DRM device handle. 791 * \param crtc crtc for which timestamp should be returned. 792 * \param *max_error Maximum allowable timestamp error in nanoseconds. 793 * Implementation should strive to provide timestamp 794 * with an error of at most *max_error nanoseconds. 795 * Returns true upper bound on error for timestamp. 796 * \param *vblank_time Target location for returned vblank timestamp. 797 * \param flags 0 = Defaults, no special treatment needed. 798 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank 799 * irq handler. Some drivers need to apply some workarounds 800 * for gpu-specific vblank irq quirks if flag is set. 801 * 802 * \returns 803 * Zero if timestamping isn't supported in current display mode or a 804 * negative number on failure. A positive status code on success, 805 * which describes how the vblank_time timestamp was computed. 806 */ 807 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc, 808 int *max_error, 809 struct timeval *vblank_time, 810 unsigned flags); 811 812 /* these have to be filled in */ 813 814 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS); 815 void (*irq_preinstall) (struct drm_device *dev); 816 int (*irq_postinstall) (struct drm_device *dev); 817 void (*irq_uninstall) (struct drm_device *dev); 818 void (*set_version) (struct drm_device *dev, 819 struct drm_set_version *sv); 820 821 /* Master routines */ 822 int (*master_create)(struct drm_device *dev, struct drm_master *master); 823 void (*master_destroy)(struct drm_device *dev, struct drm_master *master); 824 /** 825 * master_set is called whenever the minor master is set. 826 * master_drop is called whenever the minor master is dropped. 827 */ 828 829 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv, 830 bool from_open); 831 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv, 832 bool from_release); 833 834 /** 835 * Driver-specific constructor for drm_gem_objects, to set up 836 * obj->driver_private. 837 * 838 * Returns 0 on success. 839 */ 840 int (*gem_init_object) (struct drm_gem_object *obj); 841 void (*gem_free_object) (struct drm_gem_object *obj); 842 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); 843 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); 844 845#ifdef FREEBSD_NOTYET 846 /* prime: */ 847 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */ 848 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv, 849 uint32_t handle, uint32_t flags, int *prime_fd); 850 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */ 851 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, 852 int prime_fd, uint32_t *handle); 853 /* export GEM -> dmabuf */ 854 struct dma_buf * (*gem_prime_export)(struct drm_device *dev, 855 struct drm_gem_object *obj, int flags); 856 /* import dmabuf -> GEM */ 857 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, 858 struct dma_buf *dma_buf); 859#endif /* defined(FREEBSD_NOTYET) */ 860 861 /* dumb alloc support */ 862 int (*dumb_create)(struct drm_file *file_priv, 863 struct drm_device *dev, 864 struct drm_mode_create_dumb *args); 865 int (*dumb_map_offset)(struct drm_file *file_priv, 866 struct drm_device *dev, uint32_t handle, 867 uint64_t *offset); 868 int (*dumb_destroy)(struct drm_file *file_priv, 869 struct drm_device *dev, 870 uint32_t handle); 871 872 /* Driver private ops for this object */ 873 struct cdev_pager_ops *gem_pager_ops; 874 875 int (*sysctl_init)(struct drm_device *dev, 876 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 877 void (*sysctl_cleanup)(struct drm_device *dev); 878 879 int major; 880 int minor; 881 int patchlevel; 882 char *name; 883 char *desc; 884 char *date; 885 886 u32 driver_features; 887 int dev_priv_size; 888 struct drm_ioctl_desc *ioctls; 889 int num_ioctls; 890 struct drm_bus *bus; 891#ifdef COMPAT_FREEBSD32 892 struct drm_ioctl_desc *compat_ioctls; 893 int *num_compat_ioctls; 894#endif 895 896 int buf_priv_size; 897}; 898 899#define DRM_MINOR_UNASSIGNED 0 900#define DRM_MINOR_LEGACY 1 901#define DRM_MINOR_CONTROL 2 902#define DRM_MINOR_RENDER 3 903 904/** 905 * DRM minor structure. This structure represents a drm minor number. 906 */ 907struct drm_minor { 908 int index; /**< Minor device number */ 909 int type; /**< Control or render */ 910 struct cdev *device; /**< Device number for mknod */ 911 device_t kdev; /**< OS device */ 912 struct drm_device *dev; 913 914 struct drm_master *master; /* currently active master for this node */ 915 struct list_head master_list; 916 struct drm_mode_group mode_group; 917 918 struct sigio *buf_sigio; /* Processes waiting for SIGIO */ 919}; 920 921/* mode specified on the command line */ 922struct drm_cmdline_mode { 923 bool specified; 924 bool refresh_specified; 925 bool bpp_specified; 926 int xres, yres; 927 int bpp; 928 int refresh; 929 bool rb; 930 bool interlace; 931 bool cvt; 932 bool margins; 933 enum drm_connector_force force; 934}; 935 936 937struct drm_pending_vblank_event { 938 struct drm_pending_event base; 939 int pipe; 940 struct drm_event_vblank event; 941}; 942 943/** 944 * DRM device structure. This structure represent a complete card that 945 * may contain multiple heads. 946 */ 947struct drm_device { 948 int if_version; /**< Highest interface version set */ 949 950 /** \name Locks */ 951 /*@{ */ 952 struct mtx count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */ 953 struct sx dev_struct_lock; /**< For others */ 954 /*@} */ 955 956 /** \name Usage Counters */ 957 /*@{ */ 958 int open_count; /**< Outstanding files open */ 959 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */ 960 atomic_t vma_count; /**< Outstanding vma areas open */ 961 int buf_use; /**< Buffers in use -- cannot alloc */ 962 atomic_t buf_alloc; /**< Buffer allocation in progress */ 963 /*@} */ 964 965 /** \name Performance counters */ 966 /*@{ */ 967 unsigned long counters; 968 enum drm_stat_type types[15]; 969 atomic_t counts[15]; 970 /*@} */ 971 972 struct list_head filelist; 973 974 /** \name Memory management */ 975 /*@{ */ 976 struct list_head maplist; /**< Linked list of regions */ 977 int map_count; /**< Number of mappable regions */ 978 struct drm_open_hash map_hash; /**< User token hash table for maps */ 979 980 /** \name Context handle management */ 981 /*@{ */ 982 struct list_head ctxlist; /**< Linked list of context handles */ 983 int ctx_count; /**< Number of context handles */ 984 struct mtx ctxlist_mutex; /**< For ctxlist */ 985 drm_local_map_t **context_sareas; 986 int max_context; 987 unsigned long *ctx_bitmap; 988 989 /*@} */ 990 991 /** \name DMA support */ 992 /*@{ */ 993 struct drm_device_dma *dma; /**< Optional pointer for DMA support */ 994 /*@} */ 995 996 /** \name Context support */ 997 /*@{ */ 998 int irq_enabled; /**< True if irq handler is enabled */ 999 atomic_t context_flag; /**< Context swapping flag */ 1000 atomic_t interrupt_flag; /**< Interruption handler flag */ 1001 atomic_t dma_flag; /**< DMA dispatch flag */ 1002 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */ 1003 int last_checked; /**< Last context checked for DMA */ 1004 int last_context; /**< Last current context */ 1005 unsigned long last_switch; /**< jiffies at last context switch */ 1006 /*@} */ 1007 1008 /** \name VBLANK IRQ support */ 1009 /*@{ */ 1010 1011 /* 1012 * At load time, disabling the vblank interrupt won't be allowed since 1013 * old clients may not call the modeset ioctl and therefore misbehave. 1014 * Once the modeset ioctl *has* been called though, we can safely 1015 * disable them when unused. 1016 */ 1017 int vblank_disable_allowed; 1018 1019 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */ 1020 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */ 1021 struct mtx vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ 1022 struct mtx vbl_lock; 1023 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */ 1024 u32 *last_vblank; /* protected by dev->vbl_lock, used */ 1025 /* for wraparound handling */ 1026 int *vblank_enabled; /* so we don't call enable more than 1027 once per disable */ 1028 int *vblank_inmodeset; /* Display driver is setting mode */ 1029 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */ 1030 struct callout vblank_disable_callout; 1031 1032 u32 max_vblank_count; /**< size of vblank counter register */ 1033 1034 /** 1035 * List of events 1036 */ 1037 struct list_head vblank_event_list; 1038 struct mtx event_lock; 1039 1040 /*@} */ 1041 1042 struct drm_agp_head *agp; /**< AGP data */ 1043 1044 device_t dev; /* Device instance from newbus */ 1045 uint16_t pci_device; /* PCI device id */ 1046 uint16_t pci_vendor; /* PCI vendor id */ 1047 uint16_t pci_subdevice; /* PCI subsystem device id */ 1048 uint16_t pci_subvendor; /* PCI subsystem vendor id */ 1049 1050 struct drm_sg_mem *sg; /**< Scatter gather memory */ 1051 unsigned int num_crtcs; /**< Number of CRTCs on this device */ 1052 void *dev_private; /**< device private data */ 1053 void *mm_private; 1054 struct drm_sigdata sigdata; /**< For block_all_signals */ 1055 sigset_t sigmask; 1056 1057 struct drm_driver *driver; 1058 struct drm_local_map *agp_buffer_map; 1059 unsigned int agp_buffer_token; 1060 struct drm_minor *control; /**< Control node for card */ 1061 struct drm_minor *primary; /**< render type primary screen head */ 1062 1063 struct drm_mode_config mode_config; /**< Current mode config */ 1064 1065 /** \name GEM information */ 1066 /*@{ */ 1067 struct sx object_name_lock; 1068 struct drm_gem_names object_names; 1069 /*@} */ 1070 int switch_power_state; 1071 1072 atomic_t unplugged; /* device has been unplugged or gone away */ 1073 1074 /* Locks */ 1075 struct mtx dma_lock; /* protects dev->dma */ 1076 struct mtx irq_lock; /* protects irq condition checks */ 1077 1078 /* Context support */ 1079 int irq; /* Interrupt used by board */ 1080 int msi_enabled; /* MSI enabled */ 1081 int irqrid; /* Interrupt used by board */ 1082 struct resource *irqr; /* Resource for interrupt used by board */ 1083 void *irqh; /* Handle from bus_setup_intr */ 1084 1085 /* Storage of resource pointers for drm_get_resource_* */ 1086#define DRM_MAX_PCI_RESOURCE 6 1087 struct resource *pcir[DRM_MAX_PCI_RESOURCE]; 1088 int pcirid[DRM_MAX_PCI_RESOURCE]; 1089 struct mtx pcir_lock; 1090 1091 int pci_domain; 1092 int pci_bus; 1093 int pci_slot; 1094 int pci_func; 1095 1096 /* Sysctl support */ 1097 struct drm_sysctl_info *sysctl; 1098 int sysctl_node_idx; 1099 1100 void *drm_ttm_bdev; 1101 1102 void *sysctl_private; 1103 char busid_str[128]; 1104 int modesetting; 1105 1106 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 1107}; 1108 1109#define DRM_SWITCH_POWER_ON 0 1110#define DRM_SWITCH_POWER_OFF 1 1111#define DRM_SWITCH_POWER_CHANGING 2 1112 1113static __inline__ int drm_core_check_feature(struct drm_device *dev, 1114 int feature) 1115{ 1116 return ((dev->driver->driver_features & feature) ? 1 : 0); 1117} 1118 1119static inline int drm_dev_to_irq(struct drm_device *dev) 1120{ 1121 return dev->driver->bus->get_irq(dev); 1122} 1123 1124 1125#if __OS_HAS_AGP 1126static inline int drm_core_has_AGP(struct drm_device *dev) 1127{ 1128 return drm_core_check_feature(dev, DRIVER_USE_AGP); 1129} 1130#else 1131#define drm_core_has_AGP(dev) (0) 1132#endif 1133 1134#if __OS_HAS_MTRR 1135static inline int drm_core_has_MTRR(struct drm_device *dev) 1136{ 1137 return drm_core_check_feature(dev, DRIVER_USE_MTRR); 1138} 1139 1140#define DRM_MTRR_WC MDF_WRITECOMBINE 1141 1142int drm_mtrr_add(unsigned long offset, unsigned long size, unsigned int flags); 1143int drm_mtrr_del(int handle, unsigned long offset, unsigned long size, unsigned int flags); 1144 1145#else 1146#define drm_core_has_MTRR(dev) (0) 1147 1148#define DRM_MTRR_WC 0 1149 1150static inline int drm_mtrr_add(unsigned long offset, unsigned long size, 1151 unsigned int flags) 1152{ 1153 return 0; 1154} 1155 1156static inline int drm_mtrr_del(int handle, unsigned long offset, 1157 unsigned long size, unsigned int flags) 1158{ 1159 return 0; 1160} 1161#endif 1162 1163/******************************************************************/ 1164/** \name Internal function definitions */ 1165/*@{*/ 1166 1167 /* Driver support (drm_drv.h) */ 1168d_ioctl_t drm_ioctl; 1169extern int drm_lastclose(struct drm_device *dev); 1170 1171 /* Device support (drm_fops.h) */ 1172extern struct sx drm_global_mutex; 1173d_open_t drm_open; 1174d_read_t drm_read; 1175extern void drm_release(void *data); 1176 1177 /* Mapping support (drm_vm.h) */ 1178d_mmap_t drm_mmap; 1179int drm_mmap_single(struct cdev *kdev, vm_ooffset_t *offset, 1180 vm_size_t size, struct vm_object **obj_res, int nprot); 1181d_poll_t drm_poll; 1182 1183 /* Memory management support (drm_memory.h) */ 1184extern void drm_free_agp(DRM_AGP_MEM * handle, int pages); 1185extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start); 1186#ifdef FREEBSD_NOTYET 1187extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev, 1188 struct page **pages, 1189 unsigned long num_pages, 1190 uint32_t gtt_offset, 1191 uint32_t type); 1192#endif /* FREEBSD_NOTYET */ 1193extern int drm_unbind_agp(DRM_AGP_MEM * handle); 1194 1195 /* Misc. IOCTL support (drm_ioctl.h) */ 1196extern int drm_irq_by_busid(struct drm_device *dev, void *data, 1197 struct drm_file *file_priv); 1198extern int drm_getunique(struct drm_device *dev, void *data, 1199 struct drm_file *file_priv); 1200extern int drm_setunique(struct drm_device *dev, void *data, 1201 struct drm_file *file_priv); 1202extern int drm_getmap(struct drm_device *dev, void *data, 1203 struct drm_file *file_priv); 1204extern int drm_getclient(struct drm_device *dev, void *data, 1205 struct drm_file *file_priv); 1206extern int drm_getstats(struct drm_device *dev, void *data, 1207 struct drm_file *file_priv); 1208extern int drm_getcap(struct drm_device *dev, void *data, 1209 struct drm_file *file_priv); 1210extern int drm_setversion(struct drm_device *dev, void *data, 1211 struct drm_file *file_priv); 1212extern int drm_noop(struct drm_device *dev, void *data, 1213 struct drm_file *file_priv); 1214 1215 /* Context IOCTL support (drm_context.h) */ 1216extern int drm_resctx(struct drm_device *dev, void *data, 1217 struct drm_file *file_priv); 1218extern int drm_addctx(struct drm_device *dev, void *data, 1219 struct drm_file *file_priv); 1220extern int drm_modctx(struct drm_device *dev, void *data, 1221 struct drm_file *file_priv); 1222extern int drm_getctx(struct drm_device *dev, void *data, 1223 struct drm_file *file_priv); 1224extern int drm_switchctx(struct drm_device *dev, void *data, 1225 struct drm_file *file_priv); 1226extern int drm_newctx(struct drm_device *dev, void *data, 1227 struct drm_file *file_priv); 1228extern int drm_rmctx(struct drm_device *dev, void *data, 1229 struct drm_file *file_priv); 1230 1231extern int drm_ctxbitmap_init(struct drm_device *dev); 1232extern void drm_ctxbitmap_cleanup(struct drm_device *dev); 1233extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle); 1234 1235extern int drm_setsareactx(struct drm_device *dev, void *data, 1236 struct drm_file *file_priv); 1237extern int drm_getsareactx(struct drm_device *dev, void *data, 1238 struct drm_file *file_priv); 1239 1240 /* Authentication IOCTL support (drm_auth.h) */ 1241extern int drm_getmagic(struct drm_device *dev, void *data, 1242 struct drm_file *file_priv); 1243extern int drm_authmagic(struct drm_device *dev, void *data, 1244 struct drm_file *file_priv); 1245extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic); 1246 1247/* Cache management (drm_cache.c) */ 1248void drm_clflush_pages(vm_page_t *pages, unsigned long num_pages); 1249void drm_clflush_virt_range(char *addr, unsigned long length); 1250 1251 /* Locking IOCTL support (drm_lock.h) */ 1252extern int drm_lock(struct drm_device *dev, void *data, 1253 struct drm_file *file_priv); 1254extern int drm_unlock(struct drm_device *dev, void *data, 1255 struct drm_file *file_priv); 1256extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context); 1257extern void drm_idlelock_take(struct drm_lock_data *lock_data); 1258extern void drm_idlelock_release(struct drm_lock_data *lock_data); 1259 1260/* 1261 * These are exported to drivers so that they can implement fencing using 1262 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1263 */ 1264 1265extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv); 1266 1267 /* Buffer management support (drm_bufs.h) */ 1268extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request); 1269extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request); 1270extern int drm_addmap(struct drm_device *dev, resource_size_t offset, 1271 unsigned int size, enum drm_map_type type, 1272 enum drm_map_flags flags, struct drm_local_map **map_ptr); 1273extern int drm_addmap_ioctl(struct drm_device *dev, void *data, 1274 struct drm_file *file_priv); 1275extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map); 1276extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map); 1277extern int drm_rmmap_ioctl(struct drm_device *dev, void *data, 1278 struct drm_file *file_priv); 1279extern int drm_addbufs(struct drm_device *dev, void *data, 1280 struct drm_file *file_priv); 1281extern int drm_infobufs(struct drm_device *dev, void *data, 1282 struct drm_file *file_priv); 1283extern int drm_markbufs(struct drm_device *dev, void *data, 1284 struct drm_file *file_priv); 1285extern int drm_freebufs(struct drm_device *dev, void *data, 1286 struct drm_file *file_priv); 1287extern int drm_mapbufs(struct drm_device *dev, void *data, 1288 struct drm_file *file_priv); 1289extern int drm_order(unsigned long size); 1290 1291 /* DMA support (drm_dma.h) */ 1292extern int drm_dma_setup(struct drm_device *dev); 1293extern void drm_dma_takedown(struct drm_device *dev); 1294extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf); 1295extern void drm_core_reclaim_buffers(struct drm_device *dev, 1296 struct drm_file *filp); 1297 1298 /* IRQ support (drm_irq.h) */ 1299extern int drm_control(struct drm_device *dev, void *data, 1300 struct drm_file *file_priv); 1301extern int drm_irq_install(struct drm_device *dev); 1302extern int drm_irq_uninstall(struct drm_device *dev); 1303 1304extern int drm_vblank_init(struct drm_device *dev, int num_crtcs); 1305extern int drm_wait_vblank(struct drm_device *dev, void *data, 1306 struct drm_file *filp); 1307extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq); 1308extern u32 drm_vblank_count(struct drm_device *dev, int crtc); 1309extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc, 1310 struct timeval *vblanktime); 1311extern void drm_send_vblank_event(struct drm_device *dev, int crtc, 1312 struct drm_pending_vblank_event *e); 1313extern bool drm_handle_vblank(struct drm_device *dev, int crtc); 1314extern int drm_vblank_get(struct drm_device *dev, int crtc); 1315extern void drm_vblank_put(struct drm_device *dev, int crtc); 1316extern void drm_vblank_off(struct drm_device *dev, int crtc); 1317extern void drm_vblank_cleanup(struct drm_device *dev); 1318extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc, 1319 struct timeval *tvblank, unsigned flags); 1320extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, 1321 int crtc, int *max_error, 1322 struct timeval *vblank_time, 1323 unsigned flags, 1324 struct drm_crtc *refcrtc); 1325extern void drm_calc_timestamping_constants(struct drm_crtc *crtc); 1326 1327extern bool 1328drm_mode_parse_command_line_for_connector(const char *mode_option, 1329 struct drm_connector *connector, 1330 struct drm_cmdline_mode *mode); 1331 1332extern struct drm_display_mode * 1333drm_mode_create_from_cmdline_mode(struct drm_device *dev, 1334 struct drm_cmdline_mode *cmd); 1335 1336/* Modesetting support */ 1337extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc); 1338extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc); 1339extern int drm_modeset_ctl(struct drm_device *dev, void *data, 1340 struct drm_file *file_priv); 1341 1342 /* AGP/GART support (drm_agpsupport.h) */ 1343extern struct drm_agp_head *drm_agp_init(struct drm_device *dev); 1344extern int drm_agp_acquire(struct drm_device *dev); 1345extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data, 1346 struct drm_file *file_priv); 1347extern int drm_agp_release(struct drm_device *dev); 1348extern int drm_agp_release_ioctl(struct drm_device *dev, void *data, 1349 struct drm_file *file_priv); 1350extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode); 1351extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data, 1352 struct drm_file *file_priv); 1353extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info); 1354extern int drm_agp_info_ioctl(struct drm_device *dev, void *data, 1355 struct drm_file *file_priv); 1356extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request); 1357extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data, 1358 struct drm_file *file_priv); 1359extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request); 1360extern int drm_agp_free_ioctl(struct drm_device *dev, void *data, 1361 struct drm_file *file_priv); 1362extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request); 1363extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data, 1364 struct drm_file *file_priv); 1365extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request); 1366extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data, 1367 struct drm_file *file_priv); 1368 1369 /* Stub support (drm_stub.h) */ 1370extern int drm_setmaster_ioctl(struct drm_device *dev, void *data, 1371 struct drm_file *file_priv); 1372extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data, 1373 struct drm_file *file_priv); 1374struct drm_master *drm_master_create(struct drm_minor *minor); 1375extern struct drm_master *drm_master_get(struct drm_master *master); 1376extern void drm_master_put(struct drm_master **master); 1377 1378extern void drm_put_dev(struct drm_device *dev); 1379extern int drm_put_minor(struct drm_minor **minor); 1380extern void drm_unplug_dev(struct drm_device *dev); 1381extern unsigned int drm_debug; 1382extern unsigned int drm_notyet; 1383 1384extern unsigned int drm_vblank_offdelay; 1385extern unsigned int drm_timestamp_precision; 1386extern unsigned int drm_timestamp_monotonic; 1387 1388extern struct drm_local_map *drm_getsarea(struct drm_device *dev); 1389 1390 1391#ifdef FREEBSD_NOTYET 1392extern int drm_gem_prime_handle_to_fd(struct drm_device *dev, 1393 struct drm_file *file_priv, uint32_t handle, uint32_t flags, 1394 int *prime_fd); 1395extern int drm_gem_prime_fd_to_handle(struct drm_device *dev, 1396 struct drm_file *file_priv, int prime_fd, uint32_t *handle); 1397 1398extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data, 1399 struct drm_file *file_priv); 1400extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data, 1401 struct drm_file *file_priv); 1402 1403extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, vm_page_t *pages, 1404 dma_addr_t *addrs, int max_pages); 1405extern struct sg_table *drm_prime_pages_to_sg(vm_page_t *pages, int nr_pages); 1406extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg); 1407 1408 1409void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv); 1410void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv); 1411int drm_prime_add_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t handle); 1412int drm_prime_lookup_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle); 1413void drm_prime_remove_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf); 1414 1415int drm_prime_add_dma_buf(struct drm_device *dev, struct drm_gem_object *obj); 1416int drm_prime_lookup_obj(struct drm_device *dev, struct dma_buf *buf, 1417 struct drm_gem_object **obj); 1418#endif /* FREEBSD_NOTYET */ 1419 1420 /* Scatter Gather Support (drm_scatter.h) */ 1421extern void drm_sg_cleanup(struct drm_sg_mem * entry); 1422extern int drm_sg_alloc_ioctl(struct drm_device *dev, void *data, 1423 struct drm_file *file_priv); 1424extern int drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request); 1425extern int drm_sg_free(struct drm_device *dev, void *data, 1426 struct drm_file *file_priv); 1427 1428 /* ATI PCIGART support (ati_pcigart.h) */ 1429extern int drm_ati_pcigart_init(struct drm_device *dev, 1430 struct drm_ati_pcigart_info * gart_info); 1431extern int drm_ati_pcigart_cleanup(struct drm_device *dev, 1432 struct drm_ati_pcigart_info * gart_info); 1433 1434extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size, 1435 size_t align, dma_addr_t maxaddr); 1436extern void __drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah); 1437extern void drm_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah); 1438 1439/* Graphics Execution Manager library functions (drm_gem.c) */ 1440int drm_gem_init(struct drm_device *dev); 1441void drm_gem_destroy(struct drm_device *dev); 1442void drm_gem_object_release(struct drm_gem_object *obj); 1443void drm_gem_object_free(struct drm_gem_object *obj); 1444struct drm_gem_object *drm_gem_object_alloc(struct drm_device *dev, 1445 size_t size); 1446int drm_gem_object_init(struct drm_device *dev, 1447 struct drm_gem_object *obj, size_t size); 1448int drm_gem_private_object_init(struct drm_device *dev, 1449 struct drm_gem_object *obj, size_t size); 1450void drm_gem_object_handle_free(struct drm_gem_object *obj); 1451int drm_gem_mmap_single(struct drm_device *dev, vm_ooffset_t *offset, 1452 vm_size_t size, struct vm_object **obj_res, int nprot); 1453void drm_gem_pager_dtr(void *obj); 1454 1455#include <dev/drm2/drm_global.h> 1456 1457static inline void 1458drm_gem_object_reference(struct drm_gem_object *obj) 1459{ 1460 1461 KASSERT(obj->refcount > 0, ("Dangling obj %p", obj)); 1462 refcount_acquire(&obj->refcount); 1463} 1464 1465static inline void 1466drm_gem_object_unreference(struct drm_gem_object *obj) 1467{ 1468 1469 if (obj == NULL) 1470 return; 1471 if (refcount_release(&obj->refcount)) 1472 drm_gem_object_free(obj); 1473} 1474 1475static inline void 1476drm_gem_object_unreference_unlocked(struct drm_gem_object *obj) 1477{ 1478 if (obj != NULL) { 1479 struct drm_device *dev = obj->dev; 1480 DRM_LOCK(dev); 1481 drm_gem_object_unreference(obj); 1482 DRM_UNLOCK(dev); 1483 } 1484} 1485 1486int drm_gem_handle_create(struct drm_file *file_priv, 1487 struct drm_gem_object *obj, 1488 u32 *handlep); 1489int drm_gem_handle_delete(struct drm_file *filp, u32 handle); 1490 1491static inline void 1492drm_gem_object_handle_reference(struct drm_gem_object *obj) 1493{ 1494 drm_gem_object_reference(obj); 1495 atomic_inc(&obj->handle_count); 1496} 1497 1498static inline void 1499drm_gem_object_handle_unreference(struct drm_gem_object *obj) 1500{ 1501 if (obj == NULL) 1502 return; 1503 1504 if (atomic_read(&obj->handle_count) == 0) 1505 return; 1506 /* 1507 * Must bump handle count first as this may be the last 1508 * ref, in which case the object would disappear before we 1509 * checked for a name 1510 */ 1511 if (atomic_dec_and_test(&obj->handle_count)) 1512 drm_gem_object_handle_free(obj); 1513 drm_gem_object_unreference(obj); 1514} 1515 1516static inline void 1517drm_gem_object_handle_unreference_unlocked(struct drm_gem_object *obj) 1518{ 1519 if (obj == NULL) 1520 return; 1521 1522 if (atomic_read(&obj->handle_count) == 0) 1523 return; 1524 1525 /* 1526 * Must bump handle count first as this may be the last 1527 * ref, in which case the object would disappear before we 1528 * checked for a name 1529 */ 1530 1531 if (atomic_dec_and_test(&obj->handle_count)) 1532 drm_gem_object_handle_free(obj); 1533 drm_gem_object_unreference_unlocked(obj); 1534} 1535 1536void drm_gem_free_mmap_offset(struct drm_gem_object *obj); 1537int drm_gem_create_mmap_offset(struct drm_gem_object *obj); 1538 1539struct drm_gem_object *drm_gem_object_lookup(struct drm_device *dev, 1540 struct drm_file *filp, 1541 u32 handle); 1542int drm_gem_close_ioctl(struct drm_device *dev, void *data, 1543 struct drm_file *file_priv); 1544int drm_gem_flink_ioctl(struct drm_device *dev, void *data, 1545 struct drm_file *file_priv); 1546int drm_gem_open_ioctl(struct drm_device *dev, void *data, 1547 struct drm_file *file_priv); 1548void drm_gem_open(struct drm_device *dev, struct drm_file *file_private); 1549void drm_gem_release(struct drm_device *dev, struct drm_file *file_private); 1550 1551extern void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev); 1552extern void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev); 1553extern void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev); 1554 1555static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev, 1556 unsigned int token) 1557{ 1558 struct drm_map_list *_entry; 1559 list_for_each_entry(_entry, &dev->maplist, head) 1560 if (_entry->user_token == token) 1561 return _entry->map; 1562 return NULL; 1563} 1564 1565static __inline__ void drm_core_dropmap(struct drm_local_map *map) 1566{ 1567} 1568 1569extern int drm_fill_in_dev(struct drm_device *dev, 1570 struct drm_driver *driver); 1571extern void drm_cancel_fill_in_dev(struct drm_device *dev); 1572int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type); 1573/*@}*/ 1574 1575/* PCI section */ 1576int drm_pci_device_is_agp(struct drm_device *dev); 1577int drm_pci_device_is_pcie(struct drm_device *dev); 1578 1579extern int drm_get_pci_dev(device_t kdev, struct drm_device *dev, 1580 struct drm_driver *driver); 1581 1582#define DRM_PCIE_SPEED_25 1 1583#define DRM_PCIE_SPEED_50 2 1584#define DRM_PCIE_SPEED_80 4 1585 1586extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); 1587 1588#define drm_can_sleep() (DRM_HZ & 1) 1589 1590/* FreeBSD specific -- should be moved to drm_os_freebsd.h */ 1591 1592#define DRM_GEM_MAPPING_MASK (3ULL << 62) 1593#define DRM_GEM_MAPPING_KEY (2ULL << 62) /* Non-canonical address form */ 1594#define DRM_GEM_MAX_IDX 0x3fffff 1595#define DRM_GEM_MAPPING_IDX(o) (((o) >> 40) & DRM_GEM_MAX_IDX) 1596#define DRM_GEM_MAPPING_OFF(i) (((uint64_t)(i)) << 40) 1597#define DRM_GEM_MAPPING_MAPOFF(o) \ 1598 ((o) & ~(DRM_GEM_MAPPING_OFF(DRM_GEM_MAX_IDX) | DRM_GEM_MAPPING_KEY)) 1599 1600SYSCTL_DECL(_hw_drm); 1601 1602#define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) 1603#define DRM_DEV_UID 0 1604#define DRM_DEV_GID 0 1605 1606#define DRM_WAKEUP(w) wakeup((void *)w) 1607#define DRM_WAKEUP_INT(w) wakeup(w) 1608#define DRM_INIT_WAITQUEUE(queue) do {(void)(queue);} while (0) 1609 1610#define DRM_CURPROC curthread 1611#define DRM_STRUCTPROC struct thread 1612#define DRM_SPINTYPE struct mtx 1613#define DRM_SPININIT(l,name) mtx_init(l, name, NULL, MTX_DEF) 1614#define DRM_SPINUNINIT(l) mtx_destroy(l) 1615#define DRM_SPINLOCK(l) mtx_lock(l) 1616#define DRM_SPINUNLOCK(u) mtx_unlock(u) 1617#define DRM_SPINLOCK_IRQSAVE(l, irqflags) do { \ 1618 mtx_lock(l); \ 1619 (void)irqflags; \ 1620} while (0) 1621#define DRM_SPINUNLOCK_IRQRESTORE(u, irqflags) mtx_unlock(u) 1622#define DRM_SPINLOCK_ASSERT(l) mtx_assert(l, MA_OWNED) 1623#define DRM_LOCK_SLEEP(dev, chan, flags, msg, timeout) \ 1624 (sx_sleep((chan), &(dev)->dev_struct_lock, (flags), (msg), (timeout))) 1625#if defined(INVARIANTS) 1626#define DRM_LOCK_ASSERT(dev) sx_assert(&(dev)->dev_struct_lock, SA_XLOCKED) 1627#define DRM_UNLOCK_ASSERT(dev) sx_assert(&(dev)->dev_struct_lock, SA_UNLOCKED) 1628#else 1629#define DRM_LOCK_ASSERT(d) 1630#define DRM_UNLOCK_ASSERT(d) 1631#endif 1632 1633#define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS) 1634 1635enum { 1636 DRM_IS_NOT_AGP, 1637 DRM_IS_AGP, 1638 DRM_MIGHT_BE_AGP 1639}; 1640 1641#define DRM_VERIFYAREA_READ( uaddr, size ) \ 1642 (!useracc(__DECONST(caddr_t, uaddr), size, VM_PROT_READ)) 1643 1644#define DRM_COPY_TO_USER(user, kern, size) \ 1645 copyout(kern, user, size) 1646#define DRM_COPY_FROM_USER(kern, user, size) \ 1647 copyin(user, kern, size) 1648#define DRM_COPY_FROM_USER_UNCHECKED(arg1, arg2, arg3) \ 1649 copyin(arg2, arg1, arg3) 1650#define DRM_COPY_TO_USER_UNCHECKED(arg1, arg2, arg3) \ 1651 copyout(arg2, arg1, arg3) 1652#define DRM_GET_USER_UNCHECKED(val, uaddr) \ 1653 ((val) = fuword32(uaddr), 0) 1654 1655#define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do { \ 1656 (_map) = (_dev)->context_sareas[_ctx]; \ 1657} while(0) 1658 1659/* Returns -errno to shared code */ 1660#define DRM_WAIT_ON( ret, queue, timeout, condition ) \ 1661for ( ret = 0 ; !ret && !(condition) ; ) { \ 1662 DRM_UNLOCK(dev); \ 1663 mtx_lock(&dev->irq_lock); \ 1664 if (!(condition)) \ 1665 ret = -mtx_sleep(&(queue), &dev->irq_lock, \ 1666 PCATCH, "drmwtq", (timeout)); \ 1667 if (ret == -ERESTART) \ 1668 ret = -ERESTARTSYS; \ 1669 mtx_unlock(&dev->irq_lock); \ 1670 DRM_LOCK(dev); \ 1671} 1672 1673#define dev_err(dev, fmt, ...) \ 1674 device_printf((dev), "error: " fmt, ## __VA_ARGS__) 1675#define dev_warn(dev, fmt, ...) \ 1676 device_printf((dev), "warning: " fmt, ## __VA_ARGS__) 1677#define dev_info(dev, fmt, ...) \ 1678 device_printf((dev), "info: " fmt, ## __VA_ARGS__) 1679#define dev_dbg(dev, fmt, ...) do { \ 1680 if ((drm_debug& DRM_DEBUGBITS_KMS) != 0) { \ 1681 device_printf((dev), "debug: " fmt, ## __VA_ARGS__); \ 1682 } \ 1683} while (0) 1684 1685struct drm_msi_blacklist_entry 1686{ 1687 int vendor; 1688 int device; 1689}; 1690 1691struct drm_vblank_info { 1692 wait_queue_head_t queue; /* vblank wait queue */ 1693 atomic_t count; /* number of VBLANK interrupts */ 1694 /* (driver must alloc the right number of counters) */ 1695 atomic_t refcount; /* number of users of vblank interrupts */ 1696 u32 last; /* protected by dev->vbl_lock, used */ 1697 /* for wraparound handling */ 1698 int enabled; /* so we don't call enable more than */ 1699 /* once per disable */ 1700 int inmodeset; /* Display driver is setting mode */ 1701}; 1702 1703#ifndef DMA_BIT_MASK 1704#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : (1ULL<<(n)) - 1) 1705#endif 1706 1707#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) 1708 1709enum dmi_field { 1710 DMI_NONE, 1711 DMI_BIOS_VENDOR, 1712 DMI_BIOS_VERSION, 1713 DMI_BIOS_DATE, 1714 DMI_SYS_VENDOR, 1715 DMI_PRODUCT_NAME, 1716 DMI_PRODUCT_VERSION, 1717 DMI_PRODUCT_SERIAL, 1718 DMI_PRODUCT_UUID, 1719 DMI_BOARD_VENDOR, 1720 DMI_BOARD_NAME, 1721 DMI_BOARD_VERSION, 1722 DMI_BOARD_SERIAL, 1723 DMI_BOARD_ASSET_TAG, 1724 DMI_CHASSIS_VENDOR, 1725 DMI_CHASSIS_TYPE, 1726 DMI_CHASSIS_VERSION, 1727 DMI_CHASSIS_SERIAL, 1728 DMI_CHASSIS_ASSET_TAG, 1729 DMI_STRING_MAX, 1730}; 1731 1732struct dmi_strmatch { 1733 unsigned char slot; 1734 char substr[79]; 1735}; 1736 1737struct dmi_system_id { 1738 int (*callback)(const struct dmi_system_id *); 1739 const char *ident; 1740 struct dmi_strmatch matches[4]; 1741}; 1742#define DMI_MATCH(a, b) {(a), (b)} 1743bool dmi_check_system(const struct dmi_system_id *); 1744 1745/* Device setup support (drm_drv.c) */ 1746int drm_probe_helper(device_t kdev, drm_pci_id_list_t *idlist); 1747int drm_attach_helper(device_t kdev, drm_pci_id_list_t *idlist, 1748 struct drm_driver *driver); 1749int drm_generic_detach(device_t kdev); 1750 1751void drm_event_wakeup(struct drm_pending_event *e); 1752 1753int drm_add_busid_modesetting(struct drm_device *dev, 1754 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 1755 1756/* Buffer management support (drm_bufs.c) */ 1757unsigned long drm_get_resource_start(struct drm_device *dev, 1758 unsigned int resource); 1759unsigned long drm_get_resource_len(struct drm_device *dev, 1760 unsigned int resource); 1761 1762/* IRQ support (drm_irq.c) */ 1763irqreturn_t drm_irq_handler(DRM_IRQ_ARGS); 1764void drm_driver_irq_preinstall(struct drm_device *dev); 1765void drm_driver_irq_postinstall(struct drm_device *dev); 1766void drm_driver_irq_uninstall(struct drm_device *dev); 1767 1768/* sysctl support (drm_sysctl.h) */ 1769extern int drm_sysctl_init(struct drm_device *dev); 1770extern int drm_sysctl_cleanup(struct drm_device *dev); 1771 1772int drm_version(struct drm_device *dev, void *data, 1773 struct drm_file *file_priv); 1774 1775/* consistent PCI memory functions (drm_pci.c) */ 1776int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master); 1777int drm_pci_set_unique(struct drm_device *dev, struct drm_master *master, 1778 struct drm_unique *u); 1779int drm_pci_agp_init(struct drm_device *dev); 1780int drm_pci_enable_msi(struct drm_device *dev); 1781void drm_pci_disable_msi(struct drm_device *dev); 1782 1783struct ttm_bo_device; 1784int ttm_bo_mmap_single(struct ttm_bo_device *bdev, vm_ooffset_t *offset, 1785 vm_size_t size, struct vm_object **obj_res, int nprot); 1786struct ttm_buffer_object; 1787void ttm_bo_release_mmap(struct ttm_buffer_object *bo); 1788 1789#endif /* __KERNEL__ */ 1790#endif 1791