1 /* 2 * Internal Header for the Direct Rendering Manager 3 * 4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 6 * Copyright (c) 2009-2010, Code Aurora Forum. 7 * All rights reserved. 8 * 9 * Author: Rickard E. (Rik) Faith <faith@valinux.com> 10 * Author: Gareth Hughes <gareth@valinux.com> 11 * 12 * Permission is hereby granted, free of charge, to any person obtaining a 13 * copy of this software and associated documentation files (the "Software"), 14 * to deal in the Software without restriction, including without limitation 15 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 16 * and/or sell copies of the Software, and to permit persons to whom the 17 * Software is furnished to do so, subject to the following conditions: 18 * 19 * The above copyright notice and this permission notice (including the next 20 * paragraph) shall be included in all copies or substantial portions of the 21 * Software. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 26 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 27 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 28 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 29 * OTHER DEALINGS IN THE SOFTWARE. 30 */ 31 32 #ifndef _DRM_P_H_ 33 #define _DRM_P_H_ 34 35 #if defined(_KERNEL) || defined(__KERNEL__) 36 37 #include <sys/param.h> 38 #include <sys/queue.h> 39 #include <sys/malloc.h> 40 #include <sys/kernel.h> 41 #include <sys/ktr.h> 42 #include <sys/module.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/sglist.h> 46 #include <sys/stat.h> 47 #include <sys/priv.h> 48 #include <sys/proc.h> 49 #include <sys/lock.h> 50 #include <sys/spinlock.h> 51 #include <sys/spinlock2.h> 52 #include <sys/fcntl.h> 53 #include <sys/uio.h> 54 #include <sys/filio.h> 55 #include <sys/sysctl.h> 56 #include <sys/bus.h> 57 #include <sys/queue.h> 58 #include <sys/signalvar.h> 59 #include <sys/poll.h> 60 #include <linux/highmem.h> 61 #include <sys/sbuf.h> 62 #include <sys/taskqueue.h> 63 #include <sys/tree.h> 64 #include <vm/vm.h> 65 #include <vm/pmap.h> 66 #include <vm/vm_extern.h> 67 #include <vm/vm_kern.h> 68 #include <vm/vm_map.h> 69 #include <vm/vm_object.h> 70 #include <vm/vm_page2.h> 71 #include <vm/vm_pager.h> 72 #include <vm/vm_param.h> 73 #include <machine/param.h> 74 #include <machine/pmap.h> 75 #ifdef __x86_64__ 76 #include <machine/specialreg.h> 77 #endif 78 #include <machine/sysarch.h> 79 #include <sys/endian.h> 80 #include <sys/mman.h> 81 #include <sys/rman.h> 82 #include <sys/memrange.h> 83 #include <sys/agpio.h> 84 #include <sys/mutex.h> 85 86 MALLOC_DECLARE(M_DRM); 87 88 #include <uapi_drm/drm.h> 89 #include <uapi_drm/drm_sarea.h> 90 91 #include <linux/atomic.h> 92 #include <linux/bug.h> 93 #include <linux/dma-mapping.h> 94 #include <linux/capability.h> 95 #include <linux/err.h> 96 #include <linux/idr.h> 97 #include <linux/pci.h> 98 #include <linux/jiffies.h> 99 #include <linux/kernel.h> 100 #include <linux/fs.h> 101 #include <linux/kref.h> 102 #include <linux/list.h> 103 #include <linux/mm.h> 104 #include <linux/moduleparam.h> 105 #include <linux/mutex.h> 106 #include <linux/slab.h> 107 #include <linux/scatterlist.h> 108 #include <linux/timer.h> 109 #include <asm/io.h> 110 #include <linux/seq_file.h> 111 #include <linux/types.h> 112 #include <linux/vmalloc.h> 113 #include <linux/wait.h> 114 #include <linux/workqueue.h> 115 116 #include <asm/uaccess.h> 117 118 #include <drm/drm_global.h> 119 120 #include <drm/drm_vma_manager.h> 121 122 struct drm_file; 123 struct drm_device; 124 struct drm_agp_head; 125 struct drm_gem_object; 126 127 struct device_node; 128 struct videomode; 129 130 #include <drm/drm_os_linux.h> 131 #include <drm/drm_hashtab.h> 132 #include <drm/drm_mm.h> 133 134 /* 135 * 4 debug categories are defined: 136 * 137 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ... 138 * This is the category used by the DRM_DEBUG() macro. 139 * 140 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ... 141 * This is the category used by the DRM_DEBUG_DRIVER() macro. 142 * 143 * KMS: used in the modesetting code. 144 * This is the category used by the DRM_DEBUG_KMS() macro. 145 * 146 * PRIME: used in the prime code. 147 * This is the category used by the DRM_DEBUG_PRIME() macro. 148 * 149 * Enabling verbose debug messages is done through the drm.debug parameter, 150 * each category being enabled by a bit. 151 * 152 * drm.debug=0x1 will enable CORE messages 153 * drm.debug=0x2 will enable DRIVER messages 154 * drm.debug=0x3 will enable CORE and DRIVER messages 155 * ... 156 * drm.debug=0xf will enable all messages 157 * 158 * An interesting feature is that it's possible to enable verbose logging at 159 * run-time by echoing the debug value in its sysfs node: 160 * # echo 0xf > /sys/module/drm/parameters/debug 161 */ 162 #define DRM_UT_CORE 0x01 163 #define DRM_UT_DRIVER 0x02 164 #define DRM_UT_KMS 0x04 165 #define DRM_UT_PRIME 0x08 166 167 void drm_ut_debug_printk(const char *function_name, 168 const char *format, ...); 169 170 void drm_err(const char *format, ...); 171 172 /***********************************************************************/ 173 /** \name DRM template customization defaults */ 174 /*@{*/ 175 176 /* driver capabilities and requirements mask */ 177 #define DRIVER_USE_AGP 0x1 178 #define DRIVER_REQUIRE_AGP 0x2 179 #define DRIVER_PCI_DMA 0x8 180 #define DRIVER_SG 0x10 181 #define DRIVER_HAVE_DMA 0x20 182 #define DRIVER_HAVE_IRQ 0x40 183 #define DRIVER_IRQ_SHARED 0x80 184 #define DRIVER_DMA_QUEUE 0x200 185 #define DRIVER_GEM 0x1000 186 #define DRIVER_MODESET 0x2000 187 #define DRIVER_PRIME 0x4000 188 #define DRIVER_RENDER 0x8000 189 #define DRIVER_ATOMIC 0x10000 190 191 /***********************************************************************/ 192 /** \name Begin the DRM... */ 193 /*@{*/ 194 195 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */ 196 197 /*@}*/ 198 199 /***********************************************************************/ 200 /** \name Macros to make printk easier */ 201 /*@{*/ 202 203 /** 204 * Error output. 205 * 206 * \param fmt printf() like format string. 207 * \param arg arguments 208 */ 209 #define DRM_ERROR(fmt, ...) \ 210 kprintf("error: [" DRM_NAME ":pid%d:%s] *ERROR* " fmt, \ 211 DRM_CURRENTPID, __func__ , ##__VA_ARGS__) 212 213 #define DRM_GEM_MAPPING_MASK (3ULL << 62) 214 #define DRM_GEM_MAPPING_KEY (2ULL << 62) /* Non-canonical address form */ 215 #define DRM_GEM_MAX_IDX 0x3fffff 216 #define DRM_GEM_MAPPING_IDX(o) (((o) >> 40) & DRM_GEM_MAX_IDX) 217 #define DRM_GEM_MAPPING_OFF(i) (((uint64_t)(i)) << 40) 218 #define DRM_GEM_MAPPING_MAPOFF(o) \ 219 ((o) & ~(DRM_GEM_MAPPING_OFF(DRM_GEM_MAX_IDX) | DRM_GEM_MAPPING_KEY)) 220 221 SYSCTL_DECL(_hw_drm); 222 223 #define DRM_MAX(a,b) ((a)>(b)?(a):(b)) 224 225 #define DRM_IF_VERSION(maj, min) (maj << 16 | min) 226 227 #define __OS_HAS_AGP 1 228 229 #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) 230 #define DRM_DEV_UID UID_ROOT 231 #define DRM_DEV_GID GID_WHEEL 232 233 #define DRM_CURPROC curthread 234 #define DRM_STRUCTPROC struct thread 235 #define DRM_CURRENTPID (curproc != NULL ? curproc->p_pid : -1) 236 #define DRM_LOCK(dev) lockmgr(&(dev)->struct_mutex, LK_EXCLUSIVE) 237 #define DRM_UNLOCK(dev) lockmgr(&(dev)->struct_mutex, LK_RELEASE) 238 #define DRM_LOCK_SLEEP(dev, chan, flags, msg, timeout) \ 239 (lksleep((chan), &(dev)->struct_mutex, (flags), (msg), (timeout))) 240 #if defined(INVARIANTS) 241 #define DRM_LOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) != 0); 242 #define DRM_UNLOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) == 0); 243 #else 244 #define DRM_LOCK_ASSERT(d) 245 #define DRM_UNLOCK_ASSERT(d) 246 #endif 247 248 #define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS) 249 250 typedef void irqreturn_t; 251 #define IRQ_HANDLED /* nothing */ 252 #define IRQ_NONE /* nothing */ 253 254 enum { 255 DRM_IS_NOT_AGP, 256 DRM_IS_AGP, 257 DRM_MIGHT_BE_AGP 258 }; 259 #define DRM_AGP_MEM struct agp_memory_info 260 261 #define drm_get_device_from_kdev(_kdev) (_kdev->si_drv1) 262 263 #define DRM_AGP_FIND_DEVICE() agp_find_device() 264 #define DRM_MTRR_WC MDF_WRITECOMBINE 265 266 #define LOCK_TEST_WITH_RETURN(dev, file_priv) \ 267 do { \ 268 if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) || \ 269 dev->lock.file_priv != file_priv) { \ 270 DRM_ERROR("%s called without lock held\n", \ 271 __FUNCTION__); \ 272 return EINVAL; \ 273 } \ 274 } while (0) 275 276 /* Returns -errno to shared code */ 277 #define DRM_WAIT_ON( ret, queue, timeout, condition ) \ 278 for ( ret = 0 ; !ret && !(condition) ; ) { \ 279 lwkt_serialize_enter(&dev->irq_lock); \ 280 if (!(condition)) { \ 281 tsleep_interlock(&(queue), PCATCH); \ 282 lwkt_serialize_exit(&dev->irq_lock); \ 283 ret = -tsleep(&(queue), PCATCH | PINTERLOCKED, \ 284 "drmwtq", (timeout)); \ 285 } else { \ 286 lwkt_serialize_exit(&dev->irq_lock); \ 287 } \ 288 } 289 290 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end, 291 vm_memattr_t memattr); 292 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end); 293 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa); 294 295 /***********************************************************************/ 296 /** \name Macros to make printk easier */ 297 /*@{*/ 298 299 300 #define DRM_INFO(fmt, ...) kprintf("info: [" DRM_NAME "] " fmt , ##__VA_ARGS__) 301 302 #define DRM_INFO_ONCE(fmt, ...) \ 303 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) 304 305 #define DRM_DEBUGBITS_DEBUG 0x1 306 #define DRM_DEBUGBITS_KMS 0x2 307 #define DRM_DEBUGBITS_FAILED_IOCTL 0x4 308 #define DRM_DEBUGBITS_VERBOSE 0x8 309 310 #define DRM_DEBUG(fmt, ...) do { \ 311 if ((drm_debug & DRM_DEBUGBITS_DEBUG) != 0) \ 312 kprintf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID, \ 313 __func__ , ##__VA_ARGS__); \ 314 } while (0) 315 316 #define DRM_DEBUG_VERBOSE(fmt, ...) do { \ 317 if ((drm_debug & DRM_DEBUGBITS_VERBOSE) != 0) \ 318 kprintf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID, \ 319 __func__ , ##__VA_ARGS__); \ 320 } while (0) 321 322 #define DRM_DEBUG_KMS(fmt, ...) do { \ 323 if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \ 324 kprintf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\ 325 __func__ , ##__VA_ARGS__); \ 326 } while (0) 327 328 #define DRM_DEBUG_DRIVER(fmt, ...) do { \ 329 if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \ 330 kprintf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\ 331 __func__ , ##__VA_ARGS__); \ 332 } while (0) 333 334 #define DRM_LOG_KMS(fmt, ...) do { \ 335 kprintf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID, \ 336 __func__ , ##__VA_ARGS__); \ 337 } while (0) 338 339 #define dev_dbg(dev, fmt, ...) do { \ 340 if ((drm_debug& DRM_DEBUGBITS_KMS) != 0) { \ 341 device_printf((dev), "debug: " fmt, ## __VA_ARGS__); \ 342 } \ 343 } while (0) 344 345 typedef struct drm_pci_id_list 346 { 347 int vendor; 348 int device; 349 long driver_private; 350 char *name; 351 } drm_pci_id_list_t; 352 353 struct drm_msi_blacklist_entry 354 { 355 int vendor; 356 int device; 357 }; 358 359 /** 360 * Ioctl function type. 361 * 362 * \param inode device inode. 363 * \param file_priv DRM file private pointer. 364 * \param cmd command. 365 * \param arg argument. 366 */ 367 typedef int drm_ioctl_t(struct drm_device *dev, void *data, 368 struct drm_file *file_priv); 369 370 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, 371 unsigned long arg); 372 373 #define DRM_IOCTL_NR(n) ((n) & 0xff) 374 375 #define DRM_AUTH 0x1 376 #define DRM_MASTER 0x2 377 #define DRM_ROOT_ONLY 0x4 378 #define DRM_CONTROL_ALLOW 0x8 379 #define DRM_UNLOCKED 0x10 380 #define DRM_RENDER_ALLOW 0x20 381 382 struct drm_ioctl_desc { 383 unsigned int cmd; 384 int flags; 385 drm_ioctl_t *func; 386 unsigned int cmd_drv; 387 const char *name; 388 }; 389 390 /** 391 * Creates a driver or general drm_ioctl_desc array entry for the given 392 * ioctl, for use by drm_ioctl(). 393 */ 394 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ 395 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl} 396 397 typedef struct drm_magic_entry { 398 struct list_head head; 399 struct drm_hash_item hash_item; 400 struct drm_file *priv; 401 struct drm_magic_entry *next; 402 } drm_magic_entry_t; 403 404 typedef struct drm_magic_head { 405 struct drm_magic_entry *head; 406 struct drm_magic_entry *tail; 407 } drm_magic_head_t; 408 409 typedef struct drm_buf { 410 int idx; /**< Index into master buflist */ 411 int total; /**< Buffer size */ 412 int order; /**< log-base-2(total) */ 413 int used; /**< Amount of buffer in use (for DMA) */ 414 unsigned long offset; /**< Byte offset (used internally) */ 415 void *address; /**< Address of buffer */ 416 unsigned long bus_address; /**< Bus address of buffer */ 417 struct drm_buf *next; /**< Kernel-only: used for free list */ 418 __volatile__ int waiting; /**< On kernel DMA queue */ 419 __volatile__ int pending; /**< On hardware DMA queue */ 420 struct drm_file *file_priv; /**< Private of holding file descr */ 421 int context; /**< Kernel queue for this buffer */ 422 int while_locked; /**< Dispatch this buffer while locked */ 423 enum { 424 DRM_LIST_NONE = 0, 425 DRM_LIST_FREE = 1, 426 DRM_LIST_WAIT = 2, 427 DRM_LIST_PEND = 3, 428 DRM_LIST_PRIO = 4, 429 DRM_LIST_RECLAIM = 5 430 } list; /**< Which list we're on */ 431 432 int dev_priv_size; /**< Size of buffer private storage */ 433 void *dev_private; /**< Per-buffer private storage */ 434 } drm_buf_t; 435 436 /** bufs is one longer than it has to be */ 437 struct drm_waitlist { 438 int count; /**< Number of possible buffers */ 439 struct drm_buf **bufs; /**< List of pointers to buffers */ 440 struct drm_buf **rp; /**< Read pointer */ 441 struct drm_buf **wp; /**< Write pointer */ 442 struct drm_buf **end; /**< End pointer */ 443 struct spinlock *read_lock; 444 struct spinlock *write_lock; 445 }; 446 447 typedef struct drm_dma_handle { 448 void *vaddr; 449 size_t size; 450 bus_addr_t busaddr; 451 bus_dma_tag_t tag; 452 bus_dmamap_t map; 453 } drm_dma_handle_t; 454 455 typedef struct drm_buf_entry { 456 int buf_size; 457 int buf_count; 458 drm_buf_t *buflist; 459 int seg_count; 460 int page_order; 461 struct drm_dma_handle **seglist; 462 463 int low_mark; /**< Low water mark */ 464 int high_mark; /**< High water mark */ 465 } drm_buf_entry_t; 466 467 /* Event queued up for userspace to read */ 468 struct drm_pending_event { 469 struct drm_event *event; 470 struct list_head link; 471 struct drm_file *file_priv; 472 pid_t pid; /* pid of requester, no guarantee it's valid by the time 473 we deliver the event, for tracing only */ 474 void (*destroy)(struct drm_pending_event *event); 475 }; 476 477 /* initial implementaton using a linked list - todo hashtab */ 478 struct drm_prime_file_private { 479 struct list_head head; 480 #ifdef DUMBBELL_WIP 481 struct mutex lock; 482 #endif /* DUMBBELL_WIP */ 483 }; 484 485 /** File private data */ 486 struct drm_file { 487 int authenticated; 488 struct drm_device *dev; 489 int master; 490 491 /* true when the client has asked us to expose stereo 3D mode flags */ 492 bool stereo_allowed; 493 /* 494 * true if client understands CRTC primary planes and cursor planes 495 * in the plane list 496 */ 497 unsigned universal_planes:1; 498 /* true if client understands atomic properties */ 499 unsigned atomic:1; 500 501 pid_t pid; 502 uid_t uid; 503 drm_magic_t magic; 504 unsigned long ioctl_count; 505 struct list_head lhead; 506 struct kqinfo dkq; 507 508 /** Mapping of mm object handles to object pointers. */ 509 struct idr object_idr; 510 /** Lock for synchronization of access to object_idr. */ 511 struct lock table_lock; 512 513 void *driver_priv; 514 515 int is_master; 516 struct drm_master *masterp; 517 518 /** 519 * fbs - List of framebuffers associated with this file. 520 * 521 * Protected by fbs_lock. Note that the fbs list holds a reference on 522 * the fb object to prevent it from untimely disappearing. 523 */ 524 struct list_head fbs; 525 struct lock fbs_lock; 526 527 wait_queue_head_t event_wait; 528 struct list_head event_list; 529 int event_space; 530 531 struct drm_prime_file_private prime; 532 }; 533 534 /** 535 * Lock data. 536 */ 537 struct drm_lock_data { 538 struct drm_hw_lock *hw_lock; /**< Hardware lock */ 539 /** Private of lock holder's file (NULL=kernel) */ 540 struct drm_file *file_priv; 541 wait_queue_head_t lock_queue; /**< Queue of blocked processes */ 542 unsigned long lock_time; /**< Time of last lock in jiffies */ 543 }; 544 545 /* This structure, in the struct drm_device, is always initialized while the 546 * device 547 * is open. dev->dma_lock protects the incrementing of dev->buf_use, which 548 * when set marks that no further bufs may be allocated until device teardown 549 * occurs (when the last open of the device has closed). The high/low 550 * watermarks of bufs are only touched by the X Server, and thus not 551 * concurrently accessed, so no locking is needed. 552 */ 553 typedef struct drm_device_dma { 554 555 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */ 556 int buf_count; /**< total number of buffers */ 557 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */ 558 int seg_count; 559 int page_count; /**< number of pages */ 560 unsigned long *pagelist; /**< page list */ 561 unsigned long byte_count; 562 enum { 563 _DRM_DMA_USE_AGP = 0x01, 564 _DRM_DMA_USE_SG = 0x02, 565 _DRM_DMA_USE_FB = 0x04, 566 _DRM_DMA_USE_PCI_RO = 0x08 567 } flags; 568 569 } drm_device_dma_t; 570 571 typedef struct drm_sg_mem { 572 vm_offset_t vaddr; 573 vm_paddr_t *busaddr; 574 vm_pindex_t pages; 575 } drm_sg_mem_t; 576 577 /** 578 * Kernel side of a mapping 579 */ 580 struct drm_local_map { 581 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/ 582 unsigned long size; /**< Requested physical size (bytes) */ 583 enum drm_map_type type; /**< Type of memory to map */ 584 enum drm_map_flags flags; /**< Flags */ 585 void *handle; /**< User-space: "Handle" to pass to mmap() */ 586 /**< Kernel-space: kernel-virtual address */ 587 int mtrr; /**< MTRR slot used */ 588 }; 589 590 typedef struct drm_local_map drm_local_map_t; 591 592 /** 593 * Mappings list 594 */ 595 struct drm_map_list { 596 struct list_head head; /**< list head */ 597 struct drm_hash_item hash; 598 struct drm_local_map *map; /**< mapping */ 599 uint64_t user_token; 600 struct drm_master *master; 601 struct drm_mm_node *file_offset_node; /**< fake offset */ 602 }; 603 604 /** 605 * GEM specific mm private for tracking GEM objects 606 */ 607 struct drm_gem_mm { 608 struct drm_vma_offset_manager vma_manager; 609 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */ 610 struct drm_open_hash offset_hash; /**< User token hash table for maps */ 611 struct unrhdr *idxunr; 612 }; 613 614 615 #include "drm_crtc.h" 616 617 /** 618 * struct drm_master - drm master structure 619 * 620 * @refcount: Refcount for this master object. 621 * @minor: Link back to minor char device we are master for. Immutable. 622 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex. 623 * @unique_len: Length of unique field. Protected by drm_global_mutex. 624 * @unique_size: Amount allocated. Protected by drm_global_mutex. 625 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex. 626 * @magicfree: List of used authentication tokens. Protected by struct_mutex. 627 * @lock: DRI lock information. 628 * @driver_priv: Pointer to driver-private information. 629 */ 630 struct drm_master { 631 632 struct kref refcount; /* refcount for this master */ 633 634 struct list_head head; /**< each minor contains a list of masters */ 635 struct drm_minor *minor; /**< link back to minor we are a master for */ 636 637 char *unique; /**< Unique identifier: e.g., busid */ 638 int unique_len; /**< Length of unique field */ 639 int unique_size; /**< amount allocated */ 640 641 int blocked; /**< Blocked due to VC switch? */ 642 643 struct drm_open_hash magiclist; 644 struct list_head magicfree; 645 struct drm_lock_data lock; 646 void *driver_priv; 647 }; 648 649 /* Size of ringbuffer for vblank timestamps. Just double-buffer 650 * in initial implementation. 651 */ 652 #define DRM_VBLANKTIME_RBSIZE 2 653 654 /* Flags and return codes for get_vblank_timestamp() driver function. */ 655 #define DRM_CALLED_FROM_VBLIRQ 1 656 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) 657 #define DRM_VBLANKTIME_IN_VBLANK (1 << 1) 658 659 /* get_scanout_position() return flags */ 660 #define DRM_SCANOUTPOS_VALID (1 << 0) 661 #define DRM_SCANOUTPOS_IN_VBLANK (1 << 1) 662 #define DRM_SCANOUTPOS_ACCURATE (1 << 2) 663 664 #ifndef DMA_BIT_MASK 665 #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : (1ULL<<(n)) - 1) 666 #endif 667 668 #define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) 669 670 /** 671 * DRM driver structure. This structure represent the common code for 672 * a family of cards. There will one drm_device for each card present 673 * in this family 674 */ 675 struct drm_driver { 676 int (*load)(struct drm_device *, unsigned long flags); 677 int (*use_msi)(struct drm_device *, unsigned long flags); 678 int (*firstopen)(struct drm_device *); 679 int (*open)(struct drm_device *, struct drm_file *); 680 void (*preclose)(struct drm_device *, struct drm_file *file_priv); 681 void (*postclose)(struct drm_device *, struct drm_file *); 682 void (*lastclose)(struct drm_device *); 683 int (*unload)(struct drm_device *); 684 void (*reclaim_buffers_locked)(struct drm_device *, 685 struct drm_file *file_priv); 686 int (*dma_ioctl)(struct drm_device *dev, void *data, 687 struct drm_file *file_priv); 688 void (*dma_ready)(struct drm_device *); 689 int (*dma_quiescent)(struct drm_device *); 690 int (*dma_flush_block_and_flush)(struct drm_device *, int context, 691 enum drm_lock_flags flags); 692 int (*dma_flush_unblock)(struct drm_device *, int context, 693 enum drm_lock_flags flags); 694 int (*context_ctor)(struct drm_device *dev, int context); 695 int (*context_dtor)(struct drm_device *dev, int context); 696 int (*kernel_context_switch)(struct drm_device *dev, int old, 697 int new); 698 int (*kernel_context_switch_unlock)(struct drm_device *dev); 699 void (*irq_preinstall)(struct drm_device *dev); 700 int (*irq_postinstall)(struct drm_device *dev); 701 void (*irq_uninstall)(struct drm_device *dev); 702 void (*irq_handler)(void *arg); 703 704 u32 (*get_vblank_counter)(struct drm_device *dev, int crtc); 705 int (*enable_vblank)(struct drm_device *dev, int crtc); 706 void (*disable_vblank)(struct drm_device *dev, int crtc); 707 708 /** 709 * Called by vblank timestamping code. 710 * 711 * Return the current display scanout position from a crtc, and an 712 * optional accurate ktime_get timestamp of when position was measured. 713 * 714 * \param dev DRM device. 715 * \param crtc Id of the crtc to query. 716 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0). 717 * \param *vpos Target location for current vertical scanout position. 718 * \param *hpos Target location for current horizontal scanout position. 719 * \param *stime Target location for timestamp taken immediately before 720 * scanout position query. Can be NULL to skip timestamp. 721 * \param *etime Target location for timestamp taken immediately after 722 * scanout position query. Can be NULL to skip timestamp. 723 * 724 * Returns vpos as a positive number while in active scanout area. 725 * Returns vpos as a negative number inside vblank, counting the number 726 * of scanlines to go until end of vblank, e.g., -1 means "one scanline 727 * until start of active scanout / end of vblank." 728 * 729 * \return Flags, or'ed together as follows: 730 * 731 * DRM_SCANOUTPOS_VALID = Query successful. 732 * DRM_SCANOUTPOS_INVBL = Inside vblank. 733 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of 734 * this flag means that returned position may be offset by a constant 735 * but unknown small number of scanlines wrt. real scanout position. 736 * 737 */ 738 int (*get_scanout_position) (struct drm_device *dev, int crtc, 739 unsigned int flags, 740 int *vpos, int *hpos, ktime_t *stime, 741 ktime_t *etime); 742 743 int (*get_vblank_timestamp)(struct drm_device *dev, int crtc, 744 int *max_error, struct timeval *vblank_time, 745 unsigned flags); 746 747 void (*gem_free_object)(struct drm_gem_object *obj); 748 int (*gem_open_object)(struct drm_gem_object *, struct drm_file *); 749 void (*gem_close_object)(struct drm_gem_object *, struct drm_file *); 750 751 struct cdev_pager_ops *gem_pager_ops; 752 753 int (*dumb_create)(struct drm_file *file_priv, 754 struct drm_device *dev, struct drm_mode_create_dumb *args); 755 int (*dumb_map_offset)(struct drm_file *file_priv, 756 struct drm_device *dev, uint32_t handle, uint64_t *offset); 757 int (*dumb_destroy)(struct drm_file *file_priv, 758 struct drm_device *dev, uint32_t handle); 759 760 int (*sysctl_init)(struct drm_device *dev, 761 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 762 void (*sysctl_cleanup)(struct drm_device *dev); 763 764 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 765 766 /** 767 * Called by \c drm_device_is_agp. Typically used to determine if a 768 * card is really attached to AGP or not. 769 * 770 * \param dev DRM device handle 771 * 772 * \returns 773 * One of three values is returned depending on whether or not the 774 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP 775 * (return of 1), or may or may not be AGP (return of 2). 776 */ 777 int (*device_is_agp) (struct drm_device * dev); 778 779 int major; 780 int minor; 781 int patchlevel; 782 const char *name; /* Simple driver name */ 783 const char *desc; /* Longer driver name */ 784 const char *date; /* Date of last major changes. */ 785 786 u32 driver_features; 787 int dev_priv_size; 788 const struct drm_ioctl_desc *ioctls; 789 int num_ioctls; 790 }; 791 792 /** 793 * Info file list entry. This structure represents a debugfs or proc file to 794 * be created by the drm core 795 */ 796 struct drm_info_list { 797 const char *name; /** file name */ 798 int (*show)(struct seq_file*, void*); /** show callback */ 799 u32 driver_features; /**< Required driver features for this entry */ 800 void *data; 801 }; 802 803 /** 804 * debugfs node structure. This structure represents a debugfs file. 805 */ 806 struct drm_info_node { 807 struct list_head list; 808 struct drm_minor *minor; 809 const struct drm_info_list *info_ent; 810 struct dentry *dent; 811 }; 812 813 /** 814 * DRM minor structure. This structure represents a drm minor number. 815 */ 816 struct drm_minor { 817 int index; /**< Minor device number */ 818 int type; /**< Control or render */ 819 device_t kdev; /**< OS device */ 820 struct drm_device *dev; 821 822 struct drm_master *master; /* currently active master for this node */ 823 struct list_head master_list; 824 struct drm_mode_group mode_group; 825 }; 826 827 struct drm_pending_vblank_event { 828 struct drm_pending_event base; 829 int pipe; 830 struct drm_event_vblank event; 831 }; 832 833 struct drm_sysctl_info { 834 struct sysctl_ctx_list ctx; 835 char name[2]; 836 }; 837 838 /* Length for the array of resource pointers for drm_get_resource_*. */ 839 #define DRM_MAX_PCI_RESOURCE 6 840 841 struct drm_vblank_crtc { 842 struct drm_device *dev; /* pointer to the drm_device */ 843 wait_queue_head_t queue; /**< VBLANK wait queue */ 844 struct timeval time[DRM_VBLANKTIME_RBSIZE]; /**< timestamp of current count */ 845 struct timer_list disable_timer; /* delayed disable timer */ 846 atomic_t count; /**< number of VBLANK interrupts */ 847 atomic_t refcount; /* number of users of vblank interruptsper crtc */ 848 u32 last; /* protected by dev->vbl_lock, used */ 849 /* for wraparound handling */ 850 u32 last_wait; /* Last vblank seqno waited per CRTC */ 851 unsigned int inmodeset; /* Display driver is setting mode */ 852 int crtc; /* crtc index */ 853 bool enabled; /* so we don't call enable more than 854 once per disable */ 855 }; 856 857 /** 858 * DRM device structure. This structure represent a complete card that 859 * may contain multiple heads. 860 */ 861 struct drm_device { 862 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 863 864 uint16_t pci_subdevice; /* PCI subsystem device id */ 865 uint16_t pci_subvendor; /* PCI subsystem vendor id */ 866 867 char *unique; /* Unique identifier: e.g., busid */ 868 int unique_len; /* Length of unique field */ 869 struct cdev *devnode; /* Device number for mknod */ 870 int if_version; /* Highest interface version set */ 871 872 int flags; /* Flags to open(2) */ 873 874 /* Locks */ 875 struct spinlock dma_lock; /* protects dev->dma */ 876 struct lwkt_serialize irq_lock; /* protects irq condition checks */ 877 struct lock dev_lock; /* protects everything else */ 878 879 /** \name Locks */ 880 /*@{ */ 881 struct lock struct_mutex; /**< For others */ 882 struct lock master_mutex; /**< For drm_minor::master */ 883 /*@} */ 884 885 /** \name Usage Counters */ 886 /*@{ */ 887 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ 888 struct spinlock buf_lock; /**< For drm_device::buf_use and a few other things. */ 889 int buf_use; /**< Buffers in use -- cannot alloc */ 890 atomic_t buf_alloc; /**< Buffer allocation in progress */ 891 /*@} */ 892 893 894 /** \name Performance counters */ 895 /*@{ */ 896 unsigned long counters; 897 enum drm_stat_type types[15]; 898 atomic_t counts[15]; 899 /*@} */ 900 901 /* Authentication */ 902 struct drm_open_hash magiclist; /**< magic hash table */ 903 struct list_head magicfree; 904 905 struct list_head filelist; 906 907 /** \name Memory management */ 908 /*@{ */ 909 struct list_head maplist; /**< Linked list of regions */ 910 int map_count; /**< Number of mappable regions */ 911 struct drm_open_hash map_hash; /**< User token hash table for maps */ 912 913 /** \name Context handle management */ 914 /*@{ */ 915 struct list_head ctxlist; /**< Linked list of context handles */ 916 int ctx_count; /**< Number of context handles */ 917 struct lock ctxlist_mutex; /**< For ctxlist */ 918 919 struct idr ctx_idr; 920 921 /*@} */ 922 923 struct drm_lock_data lock; /* Information on hardware lock */ 924 925 /* DMA queues (contexts) */ 926 drm_device_dma_t *dma; /* Optional pointer for DMA support */ 927 928 int irq; /* Interrupt used by board */ 929 int irq_type; /* IRQ type (MSI enabled or not) */ 930 int irqrid; /* Interrupt used by board */ 931 struct resource *irqr; /* Resource for interrupt used by board */ 932 void *irqh; /* Handle from bus_setup_intr */ 933 934 /* Storage of resource pointers for drm_get_resource_* */ 935 struct resource *pcir[DRM_MAX_PCI_RESOURCE]; 936 int pcirid[DRM_MAX_PCI_RESOURCE]; 937 938 int pci_domain; 939 int pci_bus; 940 int pci_slot; 941 int pci_func; 942 943 /** \name Context support */ 944 /*@{ */ 945 int irq_enabled; /**< True if irq handler is enabled */ 946 __volatile__ long context_flag; /**< Context swapping flag */ 947 __volatile__ long interrupt_flag; /**< Interruption handler flag */ 948 __volatile__ long dma_flag; /**< DMA dispatch flag */ 949 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */ 950 int last_checked; /**< Last context checked for DMA */ 951 int last_context; /**< Last current context */ 952 unsigned long last_switch; /**< jiffies at last context switch */ 953 /*@} */ 954 955 /** \name VBLANK IRQ support */ 956 /*@{ */ 957 958 /* 959 * At load time, disabling the vblank interrupt won't be allowed since 960 * old clients may not call the modeset ioctl and therefore misbehave. 961 * Once the modeset ioctl *has* been called though, we can safely 962 * disable them when unused. 963 */ 964 bool vblank_disable_allowed; 965 966 /* 967 * If true, vblank interrupt will be disabled immediately when the 968 * refcount drops to zero, as opposed to via the vblank disable 969 * timer. 970 * This can be set to true it the hardware has a working vblank 971 * counter and the driver uses drm_vblank_on() and drm_vblank_off() 972 * appropriately. 973 */ 974 bool vblank_disable_immediate; 975 976 /* array of size num_crtcs */ 977 struct drm_vblank_crtc *vblank; 978 979 struct lock vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ 980 struct lock vbl_lock; 981 struct timer_list vblank_disable_timer; 982 983 u32 max_vblank_count; /**< size of vblank counter register */ 984 985 /** 986 * List of events 987 */ 988 struct list_head vblank_event_list; 989 struct lock event_lock; 990 991 /*@} */ 992 993 struct sigio *buf_sigio; /* Processes waiting for SIGIO */ 994 995 /* Sysctl support */ 996 struct drm_sysctl_info *sysctl; 997 998 999 drm_sg_mem_t *sg; /* Scatter gather memory */ 1000 unsigned int num_crtcs; /**< Number of CRTCs on this device */ 1001 1002 unsigned long *ctx_bitmap; 1003 void *dev_private; 1004 1005 void *drm_ttm_bdev; 1006 1007 /*@} */ 1008 1009 struct drm_agp_head *agp; /**< AGP data */ 1010 1011 struct device *dev; /**< Device structure */ 1012 struct pci_dev *pdev; /**< PCI device structure */ 1013 int pci_vendor; /**< PCI vendor id */ 1014 int pci_device; /**< PCI device id */ 1015 1016 struct drm_driver *driver; 1017 struct drm_local_map *agp_buffer_map; 1018 unsigned int agp_buffer_token; 1019 struct drm_minor *control; /**< Control node for card */ 1020 struct drm_minor *primary; /**< render type primary screen head */ 1021 1022 struct drm_mode_config mode_config; /**< Current mode config */ 1023 1024 /** \name GEM information */ 1025 /*@{ */ 1026 struct lock object_name_lock; 1027 struct idr object_name_idr; 1028 /*@} */ 1029 void *mm_private; 1030 1031 void *sysctl_private; 1032 char busid_str[128]; 1033 int modesetting; 1034 1035 int switch_power_state; 1036 1037 atomic_t unplugged; /* device has been unplugged or gone away */ 1038 }; 1039 1040 #define DRM_SWITCH_POWER_ON 0 1041 #define DRM_SWITCH_POWER_OFF 1 1042 #define DRM_SWITCH_POWER_CHANGING 2 1043 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3 1044 1045 static __inline__ int drm_core_check_feature(struct drm_device *dev, 1046 int feature) 1047 { 1048 return ((dev->driver->driver_features & feature) ? 1 : 0); 1049 } 1050 1051 static inline void drm_device_set_unplugged(struct drm_device *dev) 1052 { 1053 smp_wmb(); 1054 atomic_set(&dev->unplugged, 1); 1055 } 1056 1057 static inline int drm_device_is_unplugged(struct drm_device *dev) 1058 { 1059 int ret = atomic_read(&dev->unplugged); 1060 smp_rmb(); 1061 return ret; 1062 } 1063 1064 static inline bool drm_is_primary_client(const struct drm_file *file_priv) 1065 { 1066 return 0 /* file_priv->minor->type == DRM_MINOR_LEGACY */; 1067 } 1068 1069 /** 1070 * drm_is_master() - Check whether a DRM open-file is DRM-Master 1071 * @file: DRM open-file context 1072 * 1073 * This checks whether a DRM open-file context is owner of the master context 1074 * attached to it. If a file owns a master context, it's called DRM-Master. 1075 * Per DRM device, only one such file can be DRM-Master at a time. 1076 * 1077 * Returns: True if the file is DRM-Master, otherwise false. 1078 */ 1079 static inline bool drm_is_master(const struct drm_file *file) 1080 { 1081 #if 0 1082 return file->master && file->master == file->minor->master; 1083 #else 1084 return true; 1085 #endif 1086 } 1087 1088 /******************************************************************/ 1089 /** \name Internal function definitions */ 1090 /*@{*/ 1091 1092 #if __OS_HAS_AGP 1093 static inline int drm_core_has_AGP(struct drm_device *dev) 1094 { 1095 return drm_core_check_feature(dev, DRIVER_USE_AGP); 1096 } 1097 #else 1098 #define drm_core_has_AGP(dev) (0) 1099 #endif 1100 1101 extern int drm_notyet_flag; 1102 extern unsigned int drm_rnodes; 1103 extern unsigned int drm_universal_planes; 1104 1105 extern int drm_vblank_offdelay; 1106 extern unsigned int drm_timestamp_precision; 1107 1108 /* Driver support (drm_drv.h) */ 1109 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist); 1110 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist); 1111 int drm_create_cdevs(device_t kdev); 1112 d_ioctl_t drm_ioctl; 1113 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); 1114 1115 /* Device support (drm_fops.h) */ 1116 d_open_t drm_open; 1117 d_close_t drm_close; 1118 d_read_t drm_read; 1119 d_kqfilter_t drm_kqfilter; 1120 int drm_release(device_t kdev); 1121 1122 d_mmap_t drm_mmap; 1123 d_mmap_single_t drm_mmap_single; 1124 1125 void drm_cdevpriv_dtor(void *cd); 1126 1127 int drm_add_busid_modesetting(struct drm_device *dev, 1128 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 1129 1130 /* File operations helpers (drm_fops.c) */ 1131 extern int drm_open_helper(struct cdev *kdev, int flags, int fmt, 1132 DRM_STRUCTPROC *p, 1133 struct drm_device *dev, 1134 struct file *fp); 1135 extern struct drm_file *drm_find_file_by_proc(struct drm_device *dev, 1136 DRM_STRUCTPROC *p); 1137 1138 #ifdef DUMBBELL_WIP 1139 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev, 1140 struct drm_file *file_priv, uint32_t handle, uint32_t flags, 1141 int *prime_fd); 1142 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev, 1143 struct drm_file *file_priv, int prime_fd, uint32_t *handle); 1144 1145 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data, 1146 struct drm_file *file_priv); 1147 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data, 1148 struct drm_file *file_priv); 1149 1150 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, vm_page_t *pages, 1151 dma_addr_t *addrs, int max_pages); 1152 #endif /* DUMBBELL_WIP */ 1153 extern struct sg_table *drm_prime_pages_to_sg(vm_page_t *pages, int nr_pages); 1154 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg); 1155 1156 #ifdef DUMBBELL_WIP 1157 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv); 1158 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv); 1159 int drm_prime_add_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t handle); 1160 int drm_prime_lookup_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle); 1161 void drm_prime_remove_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf); 1162 1163 int drm_prime_add_dma_buf(struct drm_device *dev, struct drm_gem_object *obj); 1164 int drm_prime_lookup_obj(struct drm_device *dev, struct dma_buf *buf, 1165 struct drm_gem_object **obj); 1166 #endif /* DUMBBELL_WIP */ 1167 1168 void drm_mem_init(void); 1169 void drm_mem_uninit(void); 1170 void *drm_ioremap_wc(struct drm_device *dev, drm_local_map_t *map); 1171 void *drm_ioremap(struct drm_device *dev, drm_local_map_t *map); 1172 void drm_ioremapfree(drm_local_map_t *map); 1173 int drm_mtrr_add(unsigned long offset, size_t size, int flags); 1174 int drm_mtrr_del(int handle, unsigned long offset, size_t size, int flags); 1175 1176 /* Locking IOCTL support (drm_lock.c) */ 1177 int drm_lock_take(struct drm_lock_data *lock_data, 1178 unsigned int context); 1179 int drm_lock_transfer(struct drm_lock_data *lock_data, 1180 unsigned int context); 1181 int drm_lock_free(struct drm_lock_data *lock_data, 1182 unsigned int context); 1183 1184 /* 1185 * These are exported to drivers so that they can implement fencing using 1186 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1187 */ 1188 1189 unsigned long drm_get_resource_start(struct drm_device *dev, 1190 unsigned int resource); 1191 unsigned long drm_get_resource_len(struct drm_device *dev, 1192 unsigned int resource); 1193 1194 /* IRQ support (drm_irq.h) */ 1195 extern int drm_irq_install(struct drm_device *dev, int irq); 1196 int drm_irq_uninstall(struct drm_device *dev); 1197 void drm_driver_irq_preinstall(struct drm_device *dev); 1198 void drm_driver_irq_postinstall(struct drm_device *dev); 1199 void drm_driver_irq_uninstall(struct drm_device *dev); 1200 1201 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs); 1202 extern int drm_wait_vblank(struct drm_device *dev, void *data, 1203 struct drm_file *filp); 1204 extern u32 drm_vblank_count(struct drm_device *dev, int crtc); 1205 extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc); 1206 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc, 1207 struct timeval *vblanktime); 1208 extern void drm_send_vblank_event(struct drm_device *dev, int crtc, 1209 struct drm_pending_vblank_event *e); 1210 extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc, 1211 struct drm_pending_vblank_event *e); 1212 extern bool drm_handle_vblank(struct drm_device *dev, int crtc); 1213 extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc); 1214 extern int drm_vblank_get(struct drm_device *dev, int crtc); 1215 extern void drm_vblank_put(struct drm_device *dev, int crtc); 1216 extern int drm_crtc_vblank_get(struct drm_crtc *crtc); 1217 extern void drm_crtc_vblank_put(struct drm_crtc *crtc); 1218 extern void drm_wait_one_vblank(struct drm_device *dev, int crtc); 1219 extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc); 1220 extern void drm_vblank_off(struct drm_device *dev, int crtc); 1221 extern void drm_vblank_on(struct drm_device *dev, int crtc); 1222 extern void drm_crtc_vblank_off(struct drm_crtc *crtc); 1223 extern void drm_crtc_vblank_on(struct drm_crtc *crtc); 1224 extern void drm_vblank_cleanup(struct drm_device *dev); 1225 1226 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, 1227 int crtc, int *max_error, 1228 struct timeval *vblank_time, 1229 unsigned flags, 1230 const struct drm_crtc *refcrtc, 1231 const struct drm_display_mode *mode); 1232 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc, 1233 const struct drm_display_mode *mode); 1234 1235 /** 1236 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC 1237 * @crtc: which CRTC's vblank waitqueue to retrieve 1238 * 1239 * This function returns a pointer to the vblank waitqueue for the CRTC. 1240 * Drivers can use this to implement vblank waits using wait_event() & co. 1241 */ 1242 static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc) 1243 { 1244 return &crtc->dev->vblank[drm_crtc_index(crtc)].queue; 1245 } 1246 1247 /* Modesetting support */ 1248 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc); 1249 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc); 1250 1251 /* AGP/GART support (drm_agpsupport.h) */ 1252 1253 #include <drm/drm_agpsupport.h> 1254 1255 /* sysctl support (drm_sysctl.h) */ 1256 extern int drm_sysctl_init(struct drm_device *dev); 1257 extern int drm_sysctl_cleanup(struct drm_device *dev); 1258 1259 /* Cache management (drm_memory.c) */ 1260 void drm_clflush_pages(vm_page_t *pages, unsigned long num_pages); 1261 1262 /* Locking IOCTL support (drm_drv.c) */ 1263 int drm_lock(struct drm_device *dev, void *data, 1264 struct drm_file *file_priv); 1265 int drm_unlock(struct drm_device *dev, void *data, 1266 struct drm_file *file_priv); 1267 int drm_setversion(struct drm_device *dev, void *data, 1268 struct drm_file *file_priv); 1269 1270 /* 1271 * These are exported to drivers so that they can implement fencing using 1272 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1273 */ 1274 1275 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv); 1276 1277 /* Misc. IOCTL support (drm_ioctl.c) */ 1278 int drm_noop(struct drm_device *dev, void *data, 1279 struct drm_file *file_priv); 1280 1281 /* Cache management (drm_cache.c) */ 1282 void drm_clflush_virt_range(void *addr, unsigned long length); 1283 1284 /* DMA support (drm_dma.c) */ 1285 int drm_dma(struct drm_device *dev, void *data, struct drm_file *file_priv); 1286 1287 /* Stub support (drm_stub.h) */ 1288 1289 extern void drm_put_dev(struct drm_device *dev); 1290 extern void drm_unplug_dev(struct drm_device *dev); 1291 extern unsigned int drm_debug; 1292 extern bool drm_atomic; 1293 1294 /* Scatter Gather Support (drm_scatter.c) */ 1295 int drm_sg_alloc_ioctl(struct drm_device *dev, void *data, 1296 struct drm_file *file_priv); 1297 int drm_sg_free(struct drm_device *dev, void *data, 1298 struct drm_file *file_priv); 1299 1300 /* consistent PCI memory functions (drm_pci.c) */ 1301 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size, 1302 size_t align); 1303 void drm_pci_free(struct drm_device *dev, drm_dma_handle_t *dmah); 1304 1305 /* sysfs support (drm_sysfs.c) */ 1306 extern void drm_sysfs_hotplug_event(struct drm_device *dev); 1307 1308 int drm_gem_mmap_single(struct drm_device *dev, vm_ooffset_t *offset, 1309 vm_size_t size, struct vm_object **obj_res, int nprot); 1310 void drm_gem_pager_dtr(void *obj); 1311 1312 struct ttm_bo_device; 1313 int ttm_bo_mmap_single(struct ttm_bo_device *bdev, vm_ooffset_t *offset, 1314 vm_size_t size, struct vm_object **obj_res, int nprot); 1315 struct ttm_buffer_object; 1316 void ttm_bo_release_mmap(struct ttm_buffer_object *bo); 1317 1318 void drm_device_lock_mtx(struct drm_device *dev); 1319 void drm_device_unlock_mtx(struct drm_device *dev); 1320 int drm_device_sleep_mtx(struct drm_device *dev, void *chan, int flags, 1321 const char *msg, int timeout); 1322 void drm_device_assert_mtx_locked(struct drm_device *dev); 1323 void drm_device_assert_mtx_unlocked(struct drm_device *dev); 1324 1325 void drm_device_lock_struct(struct drm_device *dev); 1326 void drm_device_unlock_struct(struct drm_device *dev); 1327 int drm_device_sleep_struct(struct drm_device *dev, void *chan, int flags, 1328 const char *msg, int timeout); 1329 void drm_device_assert_struct_locked(struct drm_device *dev); 1330 void drm_device_assert_struct_unlocked(struct drm_device *dev); 1331 1332 void drm_compat_locking_init(struct drm_device *dev); 1333 void drm_sleep_locking_init(struct drm_device *dev); 1334 1335 /* XXX glue logic, should be done in drm_pci_init(), pending drm update */ 1336 void drm_init_pdev(struct device *dev, struct pci_dev **pdev); 1337 void drm_fini_pdev(struct pci_dev **pdev); 1338 1339 /* Inline replacements for drm_alloc and friends */ 1340 static __inline__ void * 1341 drm_alloc(size_t size, struct malloc_type *area) 1342 { 1343 return kmalloc(size, area, M_WAITOK | M_NULLOK); 1344 } 1345 1346 static __inline__ void * 1347 drm_calloc(size_t nmemb, size_t size, struct malloc_type *area) 1348 { 1349 return kmalloc(size * nmemb, area, M_WAITOK | M_NULLOK | M_ZERO); 1350 } 1351 1352 static __inline__ void 1353 drm_free(void *pt, struct malloc_type *area) 1354 { 1355 /* kfree is special!!! */ 1356 if (pt != NULL) 1357 (kfree)(pt, area); 1358 } 1359 1360 static __inline__ void 1361 drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev) 1362 { 1363 map->handle = drm_ioremap_wc(dev, map); 1364 } 1365 static __inline__ void 1366 drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev) 1367 { 1368 map->handle = drm_ioremap(dev, map); 1369 } 1370 static __inline__ void 1371 drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev) 1372 { 1373 if ( map->handle && map->size ) 1374 drm_ioremapfree(map); 1375 } 1376 1377 static __inline__ struct drm_local_map * 1378 drm_core_findmap(struct drm_device *dev, unsigned long offset) 1379 { 1380 struct drm_map_list *_entry; 1381 1382 list_for_each_entry(_entry, &dev->maplist, head) { 1383 if (offset == (unsigned long)_entry->map->handle) 1384 return _entry->map; 1385 } 1386 return NULL; 1387 } 1388 1389 static __inline__ void drm_core_dropmap(struct drm_map *map) 1390 { 1391 } 1392 1393 #include <drm/drm_mem_util.h> 1394 1395 struct drm_device *drm_dev_alloc(struct drm_driver *driver, 1396 struct device *parent); 1397 void drm_dev_ref(struct drm_device *dev); 1398 void drm_dev_unref(struct drm_device *dev); 1399 int drm_dev_register(struct drm_device *dev, unsigned long flags); 1400 void drm_dev_unregister(struct drm_device *dev); 1401 int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...); 1402 1403 /* FreeBSD compatibility macros */ 1404 #define VM_OBJECT_WLOCK(object) VM_OBJECT_LOCK(object) 1405 #define VM_OBJECT_WUNLOCK(object) VM_OBJECT_UNLOCK(object) 1406 1407 #define DRM_PCIE_SPEED_25 1 1408 #define DRM_PCIE_SPEED_50 2 1409 #define DRM_PCIE_SPEED_80 4 1410 1411 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); 1412 1413 /* XXX bad */ 1414 #define drm_can_sleep() (HZ & 1) 1415 1416 #endif /* __KERNEL__ */ 1417 #endif /* _DRM_P_H_ */ 1418