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 #include <drm/drm_os_linux.h> 123 #include <drm/drm_hashtab.h> 124 #include <drm/drm_mm.h> 125 126 struct drm_file; 127 struct drm_device; 128 struct drm_agp_head; 129 struct drm_gem_object; 130 131 struct device_node; 132 struct videomode; 133 struct reservation_object; 134 struct dma_buf_attachment; 135 136 /* 137 * 4 debug categories are defined: 138 * 139 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ... 140 * This is the category used by the DRM_DEBUG() macro. 141 * 142 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ... 143 * This is the category used by the DRM_DEBUG_DRIVER() macro. 144 * 145 * KMS: used in the modesetting code. 146 * This is the category used by the DRM_DEBUG_KMS() macro. 147 * 148 * PRIME: used in the prime code. 149 * This is the category used by the DRM_DEBUG_PRIME() macro. 150 * 151 * ATOMIC: used in the atomic code. 152 * This is the category used by the DRM_DEBUG_ATOMIC() macro. 153 * 154 * Enabling verbose debug messages is done through the drm.debug parameter, 155 * each category being enabled by a bit. 156 * 157 * drm.debug=0x1 will enable CORE messages 158 * drm.debug=0x2 will enable DRIVER messages 159 * drm.debug=0x3 will enable CORE and DRIVER messages 160 * ... 161 * drm.debug=0xf will enable all messages 162 * 163 * An interesting feature is that it's possible to enable verbose logging at 164 * run-time by echoing the debug value in its sysfs node: 165 * # echo 0xf > /sys/module/drm/parameters/debug 166 */ 167 #define DRM_UT_CORE 0x01 168 #define DRM_UT_DRIVER 0x02 169 #define DRM_UT_KMS 0x04 170 #define DRM_UT_PRIME 0x08 171 #define DRM_UT_ATOMIC 0x10 172 173 void drm_ut_debug_printk(const char *function_name, 174 const char *format, ...); 175 176 void drm_err(const char *format, ...); 177 178 /***********************************************************************/ 179 /** \name DRM template customization defaults */ 180 /*@{*/ 181 182 /* driver capabilities and requirements mask */ 183 #define DRIVER_USE_AGP 0x1 184 #define DRIVER_REQUIRE_AGP 0x2 185 #define DRIVER_PCI_DMA 0x8 186 #define DRIVER_SG 0x10 187 #define DRIVER_HAVE_DMA 0x20 188 #define DRIVER_HAVE_IRQ 0x40 189 #define DRIVER_IRQ_SHARED 0x80 190 #define DRIVER_DMA_QUEUE 0x200 191 #define DRIVER_GEM 0x1000 192 #define DRIVER_MODESET 0x2000 193 #define DRIVER_PRIME 0x4000 194 #define DRIVER_RENDER 0x8000 195 #define DRIVER_ATOMIC 0x10000 196 197 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */ 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 /** 214 * Rate limited error output. Like DRM_ERROR() but won't flood the log. 215 * 216 * \param fmt printf() like format string. 217 * \param arg arguments 218 */ 219 220 #define DRM_INFO(fmt, ...) kprintf("info: [" DRM_NAME "] " fmt , ##__VA_ARGS__) 221 222 #define DRM_INFO_ONCE(fmt, ...) \ 223 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) 224 225 /** 226 * Debug output. 227 * 228 * \param fmt printf() like format string. 229 * \param arg arguments 230 */ 231 232 #define DRM_DEBUGBITS_DEBUG 0x1 233 #define DRM_DEBUGBITS_KMS 0x2 234 #define DRM_DEBUGBITS_FAILED_IOCTL 0x4 235 #define DRM_DEBUGBITS_VERBOSE 0x8 236 237 #define DRM_DEBUG(fmt, ...) do { \ 238 if ((drm_debug & DRM_DEBUGBITS_DEBUG) != 0) \ 239 kprintf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID, \ 240 __func__ , ##__VA_ARGS__); \ 241 } while (0) 242 243 #define DRM_DEBUG_VERBOSE(fmt, ...) do { \ 244 if ((drm_debug & DRM_DEBUGBITS_VERBOSE) != 0) \ 245 kprintf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID, \ 246 __func__ , ##__VA_ARGS__); \ 247 } while (0) 248 249 #define DRM_DEBUG_KMS(fmt, ...) do { \ 250 if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \ 251 kprintf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\ 252 __func__ , ##__VA_ARGS__); \ 253 } while (0) 254 255 #define DRM_DEBUG_DRIVER(fmt, ...) do { \ 256 if ((drm_debug & DRM_DEBUGBITS_KMS) != 0) \ 257 kprintf("[" DRM_NAME ":KMS:pid%d:%s] " fmt, DRM_CURRENTPID,\ 258 __func__ , ##__VA_ARGS__); \ 259 } while (0) 260 261 #define DRM_DEBUG_ATOMIC(fmt, args...) \ 262 do { \ 263 if (unlikely(drm_debug & DRM_UT_ATOMIC)) \ 264 drm_ut_debug_printk(__func__, fmt, ##args); \ 265 } while (0) 266 267 /*@}*/ 268 269 /***********************************************************************/ 270 /** \name Internal types and structures */ 271 /*@{*/ 272 273 #define DRM_GEM_MAPPING_MASK (3ULL << 62) 274 #define DRM_GEM_MAPPING_KEY (2ULL << 62) /* Non-canonical address form */ 275 #define DRM_GEM_MAX_IDX 0x3fffff 276 #define DRM_GEM_MAPPING_IDX(o) (((o) >> 40) & DRM_GEM_MAX_IDX) 277 #define DRM_GEM_MAPPING_OFF(i) (((uint64_t)(i)) << 40) 278 #define DRM_GEM_MAPPING_MAPOFF(o) \ 279 ((o) & ~(DRM_GEM_MAPPING_OFF(DRM_GEM_MAX_IDX) | DRM_GEM_MAPPING_KEY)) 280 281 SYSCTL_DECL(_hw_drm); 282 283 #define DRM_MAX(a,b) ((a)>(b)?(a):(b)) 284 285 #define DRM_IF_VERSION(maj, min) (maj << 16 | min) 286 287 #define __OS_HAS_AGP 1 288 289 #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) 290 #define DRM_DEV_UID UID_ROOT 291 #define DRM_DEV_GID GID_WHEEL 292 293 #define DRM_CURPROC curthread 294 #define DRM_STRUCTPROC struct thread 295 #define DRM_CURRENTPID (curproc != NULL ? curproc->p_pid : -1) 296 #define DRM_LOCK(dev) lockmgr(&(dev)->struct_mutex, LK_EXCLUSIVE) 297 #define DRM_UNLOCK(dev) lockmgr(&(dev)->struct_mutex, LK_RELEASE) 298 #define DRM_LOCK_SLEEP(dev, chan, flags, msg, timeout) \ 299 (lksleep((chan), &(dev)->struct_mutex, (flags), (msg), (timeout))) 300 #if defined(INVARIANTS) 301 #define DRM_LOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) != 0); 302 #define DRM_UNLOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) == 0); 303 #else 304 #define DRM_LOCK_ASSERT(d) 305 #define DRM_UNLOCK_ASSERT(d) 306 #endif 307 308 #define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS) 309 310 typedef void irqreturn_t; 311 #define IRQ_HANDLED /* nothing */ 312 #define IRQ_NONE /* nothing */ 313 314 enum { 315 DRM_IS_NOT_AGP, 316 DRM_IS_AGP, 317 DRM_MIGHT_BE_AGP 318 }; 319 #define DRM_AGP_MEM struct agp_memory_info 320 321 #define drm_get_device_from_kdev(_kdev) (_kdev->si_drv1) 322 323 #define DRM_AGP_FIND_DEVICE() agp_find_device() 324 #define DRM_MTRR_WC MDF_WRITECOMBINE 325 326 #define LOCK_TEST_WITH_RETURN(dev, file_priv) \ 327 do { \ 328 if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) || \ 329 dev->lock.file_priv != file_priv) { \ 330 DRM_ERROR("%s called without lock held\n", \ 331 __FUNCTION__); \ 332 return EINVAL; \ 333 } \ 334 } while (0) 335 336 /* Returns -errno to shared code */ 337 #define DRM_WAIT_ON( ret, queue, timeout, condition ) \ 338 for ( ret = 0 ; !ret && !(condition) ; ) { \ 339 lwkt_serialize_enter(&dev->irq_lock); \ 340 if (!(condition)) { \ 341 tsleep_interlock(&(queue), PCATCH); \ 342 lwkt_serialize_exit(&dev->irq_lock); \ 343 ret = -tsleep(&(queue), PCATCH | PINTERLOCKED, \ 344 "drmwtq", (timeout)); \ 345 } else { \ 346 lwkt_serialize_exit(&dev->irq_lock); \ 347 } \ 348 } 349 350 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end, 351 vm_memattr_t memattr); 352 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end); 353 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa); 354 355 356 #define dev_dbg(dev, fmt, ...) do { \ 357 if ((drm_debug& DRM_DEBUGBITS_KMS) != 0) { \ 358 device_printf((dev), "debug: " fmt, ## __VA_ARGS__); \ 359 } \ 360 } while (0) 361 362 typedef struct drm_pci_id_list 363 { 364 int vendor; 365 int device; 366 long driver_private; 367 char *name; 368 } drm_pci_id_list_t; 369 370 /** 371 * Ioctl function type. 372 * 373 * \param inode device inode. 374 * \param file_priv DRM file private pointer. 375 * \param cmd command. 376 * \param arg argument. 377 */ 378 typedef int drm_ioctl_t(struct drm_device *dev, void *data, 379 struct drm_file *file_priv); 380 381 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, 382 unsigned long arg); 383 384 #define DRM_IOCTL_NR(n) ((n) & 0xff) 385 386 #define DRM_AUTH 0x1 387 #define DRM_MASTER 0x2 388 #define DRM_ROOT_ONLY 0x4 389 #define DRM_CONTROL_ALLOW 0x8 390 #define DRM_UNLOCKED 0x10 391 #define DRM_RENDER_ALLOW 0x20 392 393 struct drm_ioctl_desc { 394 unsigned int cmd; 395 int flags; 396 drm_ioctl_t *func; 397 unsigned int cmd_drv; 398 const char *name; 399 }; 400 401 /** 402 * Creates a driver or general drm_ioctl_desc array entry for the given 403 * ioctl, for use by drm_ioctl(). 404 */ 405 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ 406 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl} 407 408 typedef struct drm_magic_entry { 409 struct list_head head; 410 struct drm_hash_item hash_item; 411 struct drm_file *priv; 412 struct drm_magic_entry *next; 413 } drm_magic_entry_t; 414 415 typedef struct drm_magic_head { 416 struct drm_magic_entry *head; 417 struct drm_magic_entry *tail; 418 } drm_magic_head_t; 419 420 typedef struct drm_buf { 421 int idx; /**< Index into master buflist */ 422 int total; /**< Buffer size */ 423 int order; /**< log-base-2(total) */ 424 int used; /**< Amount of buffer in use (for DMA) */ 425 unsigned long offset; /**< Byte offset (used internally) */ 426 void *address; /**< Address of buffer */ 427 unsigned long bus_address; /**< Bus address of buffer */ 428 struct drm_buf *next; /**< Kernel-only: used for free list */ 429 __volatile__ int waiting; /**< On kernel DMA queue */ 430 __volatile__ int pending; /**< On hardware DMA queue */ 431 struct drm_file *file_priv; /**< Private of holding file descr */ 432 int context; /**< Kernel queue for this buffer */ 433 int while_locked; /**< Dispatch this buffer while locked */ 434 enum { 435 DRM_LIST_NONE = 0, 436 DRM_LIST_FREE = 1, 437 DRM_LIST_WAIT = 2, 438 DRM_LIST_PEND = 3, 439 DRM_LIST_PRIO = 4, 440 DRM_LIST_RECLAIM = 5 441 } list; /**< Which list we're on */ 442 443 int dev_priv_size; /**< Size of buffer private storage */ 444 void *dev_private; /**< Per-buffer private storage */ 445 } drm_buf_t; 446 447 /** bufs is one longer than it has to be */ 448 struct drm_waitlist { 449 int count; /**< Number of possible buffers */ 450 struct drm_buf **bufs; /**< List of pointers to buffers */ 451 struct drm_buf **rp; /**< Read pointer */ 452 struct drm_buf **wp; /**< Write pointer */ 453 struct drm_buf **end; /**< End pointer */ 454 struct spinlock *read_lock; 455 struct spinlock *write_lock; 456 }; 457 458 typedef struct drm_dma_handle { 459 void *vaddr; 460 size_t size; 461 bus_addr_t busaddr; 462 bus_dma_tag_t tag; 463 bus_dmamap_t map; 464 } drm_dma_handle_t; 465 466 typedef struct drm_buf_entry { 467 int buf_size; 468 int buf_count; 469 drm_buf_t *buflist; 470 int seg_count; 471 int page_order; 472 struct drm_dma_handle **seglist; 473 474 int low_mark; /**< Low water mark */ 475 int high_mark; /**< High water mark */ 476 } drm_buf_entry_t; 477 478 /* Event queued up for userspace to read */ 479 struct drm_pending_event { 480 struct drm_event *event; 481 struct list_head link; 482 struct drm_file *file_priv; 483 pid_t pid; /* pid of requester, no guarantee it's valid by the time 484 we deliver the event, for tracing only */ 485 void (*destroy)(struct drm_pending_event *event); 486 }; 487 488 /* initial implementaton using a linked list - todo hashtab */ 489 struct drm_prime_file_private { 490 struct list_head head; 491 #ifdef DUMBBELL_WIP 492 struct mutex lock; 493 #endif /* DUMBBELL_WIP */ 494 }; 495 496 /** File private data */ 497 struct drm_file { 498 int authenticated; 499 struct drm_device *dev; 500 int master; 501 502 /* true when the client has asked us to expose stereo 3D mode flags */ 503 bool stereo_allowed; 504 /* 505 * true if client understands CRTC primary planes and cursor planes 506 * in the plane list 507 */ 508 unsigned universal_planes:1; 509 /* true if client understands atomic properties */ 510 unsigned atomic:1; 511 512 pid_t pid; 513 uid_t uid; 514 drm_magic_t magic; 515 unsigned long ioctl_count; 516 struct list_head lhead; 517 struct kqinfo dkq; 518 519 /** Mapping of mm object handles to object pointers. */ 520 struct idr object_idr; 521 /** Lock for synchronization of access to object_idr. */ 522 struct lock table_lock; 523 524 void *driver_priv; 525 526 int is_master; 527 struct drm_master *masterp; 528 529 /** 530 * fbs - List of framebuffers associated with this file. 531 * 532 * Protected by fbs_lock. Note that the fbs list holds a reference on 533 * the fb object to prevent it from untimely disappearing. 534 */ 535 struct list_head fbs; 536 struct lock fbs_lock; 537 538 wait_queue_head_t event_wait; 539 struct list_head event_list; 540 int event_space; 541 542 struct drm_prime_file_private prime; 543 }; 544 545 /** 546 * Lock data. 547 */ 548 struct drm_lock_data { 549 struct drm_hw_lock *hw_lock; /**< Hardware lock */ 550 /** Private of lock holder's file (NULL=kernel) */ 551 struct drm_file *file_priv; 552 wait_queue_head_t lock_queue; /**< Queue of blocked processes */ 553 unsigned long lock_time; /**< Time of last lock in jiffies */ 554 }; 555 556 /* This structure, in the struct drm_device, is always initialized while the 557 * device 558 * is open. dev->dma_lock protects the incrementing of dev->buf_use, which 559 * when set marks that no further bufs may be allocated until device teardown 560 * occurs (when the last open of the device has closed). The high/low 561 * watermarks of bufs are only touched by the X Server, and thus not 562 * concurrently accessed, so no locking is needed. 563 */ 564 typedef struct drm_device_dma { 565 566 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */ 567 int buf_count; /**< total number of buffers */ 568 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */ 569 int seg_count; 570 int page_count; /**< number of pages */ 571 unsigned long *pagelist; /**< page list */ 572 unsigned long byte_count; 573 enum { 574 _DRM_DMA_USE_AGP = 0x01, 575 _DRM_DMA_USE_SG = 0x02, 576 _DRM_DMA_USE_FB = 0x04, 577 _DRM_DMA_USE_PCI_RO = 0x08 578 } flags; 579 580 } drm_device_dma_t; 581 582 typedef struct drm_sg_mem { 583 vm_offset_t vaddr; 584 vm_paddr_t *busaddr; 585 vm_pindex_t pages; 586 } drm_sg_mem_t; 587 588 /** 589 * Kernel side of a mapping 590 */ 591 struct drm_local_map { 592 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/ 593 unsigned long size; /**< Requested physical size (bytes) */ 594 enum drm_map_type type; /**< Type of memory to map */ 595 enum drm_map_flags flags; /**< Flags */ 596 void *handle; /**< User-space: "Handle" to pass to mmap() */ 597 /**< Kernel-space: kernel-virtual address */ 598 int mtrr; /**< MTRR slot used */ 599 }; 600 601 typedef struct drm_local_map drm_local_map_t; 602 603 /** 604 * Mappings list 605 */ 606 struct drm_map_list { 607 struct list_head head; /**< list head */ 608 struct drm_hash_item hash; 609 struct drm_local_map *map; /**< mapping */ 610 uint64_t user_token; 611 struct drm_master *master; 612 struct drm_mm_node *file_offset_node; /**< fake offset */ 613 }; 614 615 /** 616 * GEM specific mm private for tracking GEM objects 617 */ 618 struct drm_gem_mm { 619 struct drm_vma_offset_manager vma_manager; 620 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */ 621 struct drm_open_hash offset_hash; /**< User token hash table for maps */ 622 struct unrhdr *idxunr; 623 }; 624 625 626 #include "drm_crtc.h" 627 628 /** 629 * struct drm_master - drm master structure 630 * 631 * @refcount: Refcount for this master object. 632 * @minor: Link back to minor char device we are master for. Immutable. 633 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex. 634 * @unique_len: Length of unique field. Protected by drm_global_mutex. 635 * @unique_size: Amount allocated. Protected by drm_global_mutex. 636 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex. 637 * @magicfree: List of used authentication tokens. Protected by struct_mutex. 638 * @lock: DRI lock information. 639 * @driver_priv: Pointer to driver-private information. 640 */ 641 struct drm_master { 642 643 struct kref refcount; /* refcount for this master */ 644 645 struct list_head head; /**< each minor contains a list of masters */ 646 struct drm_minor *minor; /**< link back to minor we are a master for */ 647 648 char *unique; /**< Unique identifier: e.g., busid */ 649 int unique_len; /**< Length of unique field */ 650 int unique_size; /**< amount allocated */ 651 652 int blocked; /**< Blocked due to VC switch? */ 653 654 struct drm_open_hash magiclist; 655 struct list_head magicfree; 656 struct drm_lock_data lock; 657 void *driver_priv; 658 }; 659 660 /* Size of ringbuffer for vblank timestamps. Just double-buffer 661 * in initial implementation. 662 */ 663 #define DRM_VBLANKTIME_RBSIZE 2 664 665 /* Flags and return codes for get_vblank_timestamp() driver function. */ 666 #define DRM_CALLED_FROM_VBLIRQ 1 667 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) 668 #define DRM_VBLANKTIME_IN_VBLANK (1 << 1) 669 670 /* get_scanout_position() return flags */ 671 #define DRM_SCANOUTPOS_VALID (1 << 0) 672 #define DRM_SCANOUTPOS_IN_VBLANK (1 << 1) 673 #define DRM_SCANOUTPOS_ACCURATE (1 << 2) 674 675 #ifndef DMA_BIT_MASK 676 #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : (1ULL<<(n)) - 1) 677 #endif 678 679 #define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) 680 681 /** 682 * DRM driver structure. This structure represent the common code for 683 * a family of cards. There will one drm_device for each card present 684 * in this family 685 */ 686 struct drm_driver { 687 int (*load)(struct drm_device *, unsigned long flags); 688 int (*use_msi)(struct drm_device *, unsigned long flags); 689 int (*firstopen)(struct drm_device *); 690 int (*open)(struct drm_device *, struct drm_file *); 691 void (*preclose)(struct drm_device *, struct drm_file *file_priv); 692 void (*postclose)(struct drm_device *, struct drm_file *); 693 void (*lastclose)(struct drm_device *); 694 int (*unload)(struct drm_device *); 695 void (*reclaim_buffers_locked)(struct drm_device *, 696 struct drm_file *file_priv); 697 int (*dma_ioctl)(struct drm_device *dev, void *data, 698 struct drm_file *file_priv); 699 void (*dma_ready)(struct drm_device *); 700 int (*dma_quiescent)(struct drm_device *); 701 int (*dma_flush_block_and_flush)(struct drm_device *, int context, 702 enum drm_lock_flags flags); 703 int (*dma_flush_unblock)(struct drm_device *, int context, 704 enum drm_lock_flags flags); 705 int (*context_ctor)(struct drm_device *dev, int context); 706 int (*context_dtor)(struct drm_device *dev, int context); 707 int (*kernel_context_switch)(struct drm_device *dev, int old, 708 int new); 709 int (*kernel_context_switch_unlock)(struct drm_device *dev); 710 void (*irq_preinstall)(struct drm_device *dev); 711 int (*irq_postinstall)(struct drm_device *dev); 712 void (*irq_uninstall)(struct drm_device *dev); 713 void (*irq_handler)(void *arg); 714 715 u32 (*get_vblank_counter)(struct drm_device *dev, int crtc); 716 int (*enable_vblank)(struct drm_device *dev, int crtc); 717 void (*disable_vblank)(struct drm_device *dev, int crtc); 718 719 /** 720 * Called by vblank timestamping code. 721 * 722 * Return the current display scanout position from a crtc, and an 723 * optional accurate ktime_get timestamp of when position was measured. 724 * 725 * \param dev DRM device. 726 * \param crtc Id of the crtc to query. 727 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0). 728 * \param *vpos Target location for current vertical scanout position. 729 * \param *hpos Target location for current horizontal scanout position. 730 * \param *stime Target location for timestamp taken immediately before 731 * scanout position query. Can be NULL to skip timestamp. 732 * \param *etime Target location for timestamp taken immediately after 733 * scanout position query. Can be NULL to skip timestamp. 734 * 735 * Returns vpos as a positive number while in active scanout area. 736 * Returns vpos as a negative number inside vblank, counting the number 737 * of scanlines to go until end of vblank, e.g., -1 means "one scanline 738 * until start of active scanout / end of vblank." 739 * 740 * \return Flags, or'ed together as follows: 741 * 742 * DRM_SCANOUTPOS_VALID = Query successful. 743 * DRM_SCANOUTPOS_INVBL = Inside vblank. 744 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of 745 * this flag means that returned position may be offset by a constant 746 * but unknown small number of scanlines wrt. real scanout position. 747 * 748 */ 749 int (*get_scanout_position) (struct drm_device *dev, int crtc, 750 unsigned int flags, 751 int *vpos, int *hpos, ktime_t *stime, 752 ktime_t *etime); 753 754 int (*get_vblank_timestamp)(struct drm_device *dev, int crtc, 755 int *max_error, struct timeval *vblank_time, 756 unsigned flags); 757 758 void (*gem_free_object)(struct drm_gem_object *obj); 759 int (*gem_open_object)(struct drm_gem_object *, struct drm_file *); 760 void (*gem_close_object)(struct drm_gem_object *, struct drm_file *); 761 762 struct cdev_pager_ops *gem_pager_ops; 763 764 int (*dumb_create)(struct drm_file *file_priv, 765 struct drm_device *dev, struct drm_mode_create_dumb *args); 766 int (*dumb_map_offset)(struct drm_file *file_priv, 767 struct drm_device *dev, uint32_t handle, uint64_t *offset); 768 int (*dumb_destroy)(struct drm_file *file_priv, 769 struct drm_device *dev, uint32_t handle); 770 771 int (*sysctl_init)(struct drm_device *dev, 772 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 773 void (*sysctl_cleanup)(struct drm_device *dev); 774 775 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 776 777 /** 778 * Called by \c drm_device_is_agp. Typically used to determine if a 779 * card is really attached to AGP or not. 780 * 781 * \param dev DRM device handle 782 * 783 * \returns 784 * One of three values is returned depending on whether or not the 785 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP 786 * (return of 1), or may or may not be AGP (return of 2). 787 */ 788 int (*device_is_agp) (struct drm_device * dev); 789 790 int major; 791 int minor; 792 int patchlevel; 793 const char *name; /* Simple driver name */ 794 const char *desc; /* Longer driver name */ 795 const char *date; /* Date of last major changes. */ 796 797 u32 driver_features; 798 int dev_priv_size; 799 const struct drm_ioctl_desc *ioctls; 800 int num_ioctls; 801 }; 802 803 /** 804 * Info file list entry. This structure represents a debugfs or proc file to 805 * be created by the drm core 806 */ 807 struct drm_info_list { 808 const char *name; /** file name */ 809 int (*show)(struct seq_file*, void*); /** show callback */ 810 u32 driver_features; /**< Required driver features for this entry */ 811 void *data; 812 }; 813 814 /** 815 * debugfs node structure. This structure represents a debugfs file. 816 */ 817 struct drm_info_node { 818 struct list_head list; 819 struct drm_minor *minor; 820 const struct drm_info_list *info_ent; 821 struct dentry *dent; 822 }; 823 824 /** 825 * DRM minor structure. This structure represents a drm minor number. 826 */ 827 struct drm_minor { 828 int index; /**< Minor device number */ 829 int type; /**< Control or render */ 830 device_t kdev; /**< OS device */ 831 struct drm_device *dev; 832 833 struct drm_master *master; /* currently active master for this node */ 834 struct list_head master_list; 835 struct drm_mode_group mode_group; 836 }; 837 838 struct drm_pending_vblank_event { 839 struct drm_pending_event base; 840 int pipe; 841 struct drm_event_vblank event; 842 }; 843 844 struct drm_sysctl_info { 845 struct sysctl_ctx_list ctx; 846 char name[2]; 847 }; 848 849 /* Length for the array of resource pointers for drm_get_resource_*. */ 850 #define DRM_MAX_PCI_RESOURCE 6 851 852 struct drm_vblank_crtc { 853 struct drm_device *dev; /* pointer to the drm_device */ 854 wait_queue_head_t queue; /**< VBLANK wait queue */ 855 struct timeval time[DRM_VBLANKTIME_RBSIZE]; /**< timestamp of current count */ 856 struct timer_list disable_timer; /* delayed disable timer */ 857 atomic_t count; /**< number of VBLANK interrupts */ 858 atomic_t refcount; /* number of users of vblank interruptsper crtc */ 859 u32 last; /* protected by dev->vbl_lock, used */ 860 /* for wraparound handling */ 861 u32 last_wait; /* Last vblank seqno waited per CRTC */ 862 unsigned int inmodeset; /* Display driver is setting mode */ 863 int crtc; /* crtc index */ 864 bool enabled; /* so we don't call enable more than 865 once per disable */ 866 }; 867 868 /** 869 * DRM device structure. This structure represent a complete card that 870 * may contain multiple heads. 871 */ 872 struct drm_device { 873 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 874 875 char *unique; /* Unique identifier: e.g., busid */ 876 int unique_len; /* Length of unique field */ 877 struct cdev *devnode; /* Device number for mknod */ 878 int if_version; /* Highest interface version set */ 879 880 int flags; /* Flags to open(2) */ 881 882 /* Locks */ 883 struct spinlock dma_lock; /* protects dev->dma */ 884 struct lwkt_serialize irq_lock; /* protects irq condition checks */ 885 struct lock dev_lock; /* protects everything else */ 886 887 /** \name Locks */ 888 /*@{ */ 889 struct lock struct_mutex; /**< For others */ 890 struct lock master_mutex; /**< For drm_minor::master */ 891 /*@} */ 892 893 /** \name Usage Counters */ 894 /*@{ */ 895 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ 896 struct spinlock buf_lock; /**< For drm_device::buf_use and a few other things. */ 897 int buf_use; /**< Buffers in use -- cannot alloc */ 898 atomic_t buf_alloc; /**< Buffer allocation in progress */ 899 /*@} */ 900 901 902 /** \name Performance counters */ 903 /*@{ */ 904 unsigned long counters; 905 enum drm_stat_type types[15]; 906 atomic_t counts[15]; 907 /*@} */ 908 909 /* Authentication */ 910 struct drm_open_hash magiclist; /**< magic hash table */ 911 struct list_head magicfree; 912 913 struct list_head filelist; 914 915 /** \name Memory management */ 916 /*@{ */ 917 struct list_head maplist; /**< Linked list of regions */ 918 int map_count; /**< Number of mappable regions */ 919 struct drm_open_hash map_hash; /**< User token hash table for maps */ 920 921 /** \name Context handle management */ 922 /*@{ */ 923 struct list_head ctxlist; /**< Linked list of context handles */ 924 int ctx_count; /**< Number of context handles */ 925 struct lock ctxlist_mutex; /**< For ctxlist */ 926 927 struct idr ctx_idr; 928 929 /*@} */ 930 931 struct drm_lock_data lock; /* Information on hardware lock */ 932 933 /* DMA queues (contexts) */ 934 drm_device_dma_t *dma; /* Optional pointer for DMA support */ 935 936 int irq; /* Interrupt used by board */ 937 int irq_type; /* IRQ type (MSI enabled or not) */ 938 int irqrid; /* Interrupt used by board */ 939 struct resource *irqr; /* Resource for interrupt used by board */ 940 void *irqh; /* Handle from bus_setup_intr */ 941 942 /* Storage of resource pointers for drm_get_resource_* */ 943 struct resource *pcir[DRM_MAX_PCI_RESOURCE]; 944 int pcirid[DRM_MAX_PCI_RESOURCE]; 945 946 int pci_domain; 947 int pci_bus; 948 int pci_slot; 949 int pci_func; 950 951 /** \name Context support */ 952 /*@{ */ 953 int irq_enabled; /**< True if irq handler is enabled */ 954 __volatile__ long context_flag; /**< Context swapping flag */ 955 __volatile__ long interrupt_flag; /**< Interruption handler flag */ 956 __volatile__ long dma_flag; /**< DMA dispatch flag */ 957 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */ 958 int last_checked; /**< Last context checked for DMA */ 959 int last_context; /**< Last current context */ 960 unsigned long last_switch; /**< jiffies at last context switch */ 961 /*@} */ 962 963 /** \name VBLANK IRQ support */ 964 /*@{ */ 965 966 /* 967 * At load time, disabling the vblank interrupt won't be allowed since 968 * old clients may not call the modeset ioctl and therefore misbehave. 969 * Once the modeset ioctl *has* been called though, we can safely 970 * disable them when unused. 971 */ 972 bool vblank_disable_allowed; 973 974 /* 975 * If true, vblank interrupt will be disabled immediately when the 976 * refcount drops to zero, as opposed to via the vblank disable 977 * timer. 978 * This can be set to true it the hardware has a working vblank 979 * counter and the driver uses drm_vblank_on() and drm_vblank_off() 980 * appropriately. 981 */ 982 bool vblank_disable_immediate; 983 984 /* array of size num_crtcs */ 985 struct drm_vblank_crtc *vblank; 986 987 struct lock vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ 988 struct lock vbl_lock; 989 struct timer_list vblank_disable_timer; 990 991 u32 max_vblank_count; /**< size of vblank counter register */ 992 993 /** 994 * List of events 995 */ 996 struct list_head vblank_event_list; 997 struct lock event_lock; 998 999 /*@} */ 1000 1001 struct sigio *buf_sigio; /* Processes waiting for SIGIO */ 1002 1003 /* Sysctl support */ 1004 struct drm_sysctl_info *sysctl; 1005 1006 1007 drm_sg_mem_t *sg; /* Scatter gather memory */ 1008 unsigned int num_crtcs; /**< Number of CRTCs on this device */ 1009 1010 unsigned long *ctx_bitmap; 1011 void *dev_private; 1012 1013 void *drm_ttm_bdev; 1014 1015 /*@} */ 1016 1017 struct drm_agp_head *agp; /**< AGP data */ 1018 1019 struct device *dev; /**< Device structure */ 1020 struct pci_dev *pdev; /**< PCI device structure */ 1021 1022 struct drm_driver *driver; 1023 struct drm_local_map *agp_buffer_map; 1024 unsigned int agp_buffer_token; 1025 struct drm_minor *control; /**< Control node for card */ 1026 struct drm_minor *primary; /**< render type primary screen head */ 1027 1028 struct drm_mode_config mode_config; /**< Current mode config */ 1029 1030 /** \name GEM information */ 1031 /*@{ */ 1032 struct lock object_name_lock; 1033 struct idr object_name_idr; 1034 /*@} */ 1035 void *mm_private; 1036 1037 void *sysctl_private; 1038 char busid_str[128]; 1039 int modesetting; 1040 1041 int switch_power_state; 1042 1043 atomic_t unplugged; /* device has been unplugged or gone away */ 1044 }; 1045 1046 #define DRM_SWITCH_POWER_ON 0 1047 #define DRM_SWITCH_POWER_OFF 1 1048 #define DRM_SWITCH_POWER_CHANGING 2 1049 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3 1050 1051 static __inline__ int drm_core_check_feature(struct drm_device *dev, 1052 int feature) 1053 { 1054 return ((dev->driver->driver_features & feature) ? 1 : 0); 1055 } 1056 1057 static inline void drm_device_set_unplugged(struct drm_device *dev) 1058 { 1059 smp_wmb(); 1060 atomic_set(&dev->unplugged, 1); 1061 } 1062 1063 static inline int drm_device_is_unplugged(struct drm_device *dev) 1064 { 1065 int ret = atomic_read(&dev->unplugged); 1066 smp_rmb(); 1067 return ret; 1068 } 1069 1070 static inline bool drm_is_primary_client(const struct drm_file *file_priv) 1071 { 1072 return 0 /* file_priv->minor->type == DRM_MINOR_LEGACY */; 1073 } 1074 1075 /** 1076 * drm_is_master() - Check whether a DRM open-file is DRM-Master 1077 * @file: DRM open-file context 1078 * 1079 * This checks whether a DRM open-file context is owner of the master context 1080 * attached to it. If a file owns a master context, it's called DRM-Master. 1081 * Per DRM device, only one such file can be DRM-Master at a time. 1082 * 1083 * Returns: True if the file is DRM-Master, otherwise false. 1084 */ 1085 static inline bool drm_is_master(const struct drm_file *file) 1086 { 1087 #if 0 1088 return file->master && file->master == file->minor->master; 1089 #else 1090 return true; 1091 #endif 1092 } 1093 1094 /******************************************************************/ 1095 /** \name Internal function definitions */ 1096 /*@{*/ 1097 1098 #if __OS_HAS_AGP 1099 static inline int drm_core_has_AGP(struct drm_device *dev) 1100 { 1101 return drm_core_check_feature(dev, DRIVER_USE_AGP); 1102 } 1103 #else 1104 #define drm_core_has_AGP(dev) (0) 1105 #endif 1106 1107 extern int drm_notyet_flag; 1108 extern unsigned int drm_rnodes; 1109 extern unsigned int drm_universal_planes; 1110 1111 extern int drm_vblank_offdelay; 1112 extern unsigned int drm_timestamp_precision; 1113 1114 /* Driver support (drm_drv.h) */ 1115 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist); 1116 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist); 1117 int drm_create_cdevs(device_t kdev); 1118 d_ioctl_t drm_ioctl; 1119 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); 1120 1121 /* Device support (drm_fops.h) */ 1122 d_open_t drm_open; 1123 d_close_t drm_close; 1124 d_read_t drm_read; 1125 d_kqfilter_t drm_kqfilter; 1126 int drm_release(device_t kdev); 1127 1128 d_mmap_t drm_mmap; 1129 d_mmap_single_t drm_mmap_single; 1130 1131 void drm_cdevpriv_dtor(void *cd); 1132 1133 int drm_add_busid_modesetting(struct drm_device *dev, 1134 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 1135 1136 /* File operations helpers (drm_fops.c) */ 1137 extern int drm_open_helper(struct cdev *kdev, int flags, int fmt, 1138 DRM_STRUCTPROC *p, 1139 struct drm_device *dev, 1140 struct file *fp); 1141 extern struct drm_file *drm_find_file_by_proc(struct drm_device *dev, 1142 DRM_STRUCTPROC *p); 1143 1144 #ifdef DUMBBELL_WIP 1145 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev, 1146 struct drm_file *file_priv, uint32_t handle, uint32_t flags, 1147 int *prime_fd); 1148 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev, 1149 struct drm_file *file_priv, int prime_fd, uint32_t *handle); 1150 1151 extern int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data, 1152 struct drm_file *file_priv); 1153 extern int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data, 1154 struct drm_file *file_priv); 1155 1156 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, vm_page_t *pages, 1157 dma_addr_t *addrs, int max_pages); 1158 #endif /* DUMBBELL_WIP */ 1159 extern struct sg_table *drm_prime_pages_to_sg(vm_page_t *pages, int nr_pages); 1160 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg); 1161 1162 #ifdef DUMBBELL_WIP 1163 void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv); 1164 void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv); 1165 int drm_prime_add_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t handle); 1166 int drm_prime_lookup_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle); 1167 void drm_prime_remove_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf); 1168 1169 int drm_prime_add_dma_buf(struct drm_device *dev, struct drm_gem_object *obj); 1170 int drm_prime_lookup_obj(struct drm_device *dev, struct dma_buf *buf, 1171 struct drm_gem_object **obj); 1172 #endif /* DUMBBELL_WIP */ 1173 1174 void drm_mem_init(void); 1175 void drm_mem_uninit(void); 1176 void *drm_ioremap_wc(struct drm_device *dev, drm_local_map_t *map); 1177 void *drm_ioremap(struct drm_device *dev, drm_local_map_t *map); 1178 void drm_ioremapfree(drm_local_map_t *map); 1179 int drm_mtrr_add(unsigned long offset, size_t size, int flags); 1180 int drm_mtrr_del(int handle, unsigned long offset, size_t size, int flags); 1181 1182 /* Locking IOCTL support (drm_lock.c) */ 1183 int drm_lock_take(struct drm_lock_data *lock_data, 1184 unsigned int context); 1185 int drm_lock_transfer(struct drm_lock_data *lock_data, 1186 unsigned int context); 1187 int drm_lock_free(struct drm_lock_data *lock_data, 1188 unsigned int context); 1189 1190 /* 1191 * These are exported to drivers so that they can implement fencing using 1192 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1193 */ 1194 1195 unsigned long drm_get_resource_start(struct drm_device *dev, 1196 unsigned int resource); 1197 unsigned long drm_get_resource_len(struct drm_device *dev, 1198 unsigned int resource); 1199 1200 /* IRQ support (drm_irq.h) */ 1201 extern int drm_irq_install(struct drm_device *dev, int irq); 1202 int drm_irq_uninstall(struct drm_device *dev); 1203 void drm_driver_irq_preinstall(struct drm_device *dev); 1204 void drm_driver_irq_postinstall(struct drm_device *dev); 1205 void drm_driver_irq_uninstall(struct drm_device *dev); 1206 1207 extern int drm_vblank_init(struct drm_device *dev, int num_crtcs); 1208 extern int drm_wait_vblank(struct drm_device *dev, void *data, 1209 struct drm_file *filp); 1210 extern u32 drm_vblank_count(struct drm_device *dev, int crtc); 1211 extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc); 1212 extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc, 1213 struct timeval *vblanktime); 1214 extern void drm_send_vblank_event(struct drm_device *dev, int crtc, 1215 struct drm_pending_vblank_event *e); 1216 extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc, 1217 struct drm_pending_vblank_event *e); 1218 extern bool drm_handle_vblank(struct drm_device *dev, int crtc); 1219 extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc); 1220 extern int drm_vblank_get(struct drm_device *dev, int crtc); 1221 extern void drm_vblank_put(struct drm_device *dev, int crtc); 1222 extern int drm_crtc_vblank_get(struct drm_crtc *crtc); 1223 extern void drm_crtc_vblank_put(struct drm_crtc *crtc); 1224 extern void drm_wait_one_vblank(struct drm_device *dev, int crtc); 1225 extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc); 1226 extern void drm_vblank_off(struct drm_device *dev, int crtc); 1227 extern void drm_vblank_on(struct drm_device *dev, int crtc); 1228 extern void drm_crtc_vblank_off(struct drm_crtc *crtc); 1229 extern void drm_crtc_vblank_reset(struct drm_crtc *crtc); 1230 extern void drm_crtc_vblank_on(struct drm_crtc *crtc); 1231 extern void drm_vblank_cleanup(struct drm_device *dev); 1232 1233 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, 1234 int crtc, int *max_error, 1235 struct timeval *vblank_time, 1236 unsigned flags, 1237 const struct drm_crtc *refcrtc, 1238 const struct drm_display_mode *mode); 1239 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc, 1240 const struct drm_display_mode *mode); 1241 1242 /** 1243 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC 1244 * @crtc: which CRTC's vblank waitqueue to retrieve 1245 * 1246 * This function returns a pointer to the vblank waitqueue for the CRTC. 1247 * Drivers can use this to implement vblank waits using wait_event() & co. 1248 */ 1249 static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc) 1250 { 1251 return &crtc->dev->vblank[drm_crtc_index(crtc)].queue; 1252 } 1253 1254 /* Modesetting support */ 1255 extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc); 1256 extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc); 1257 1258 /* AGP/GART support (drm_agpsupport.h) */ 1259 1260 #include <drm/drm_agpsupport.h> 1261 1262 /* sysctl support (drm_sysctl.h) */ 1263 extern int drm_sysctl_init(struct drm_device *dev); 1264 extern int drm_sysctl_cleanup(struct drm_device *dev); 1265 1266 /* Cache management (drm_memory.c) */ 1267 void drm_clflush_pages(vm_page_t *pages, unsigned long num_pages); 1268 1269 /* Locking IOCTL support (drm_drv.c) */ 1270 int drm_lock(struct drm_device *dev, void *data, 1271 struct drm_file *file_priv); 1272 int drm_unlock(struct drm_device *dev, void *data, 1273 struct drm_file *file_priv); 1274 int drm_setversion(struct drm_device *dev, void *data, 1275 struct drm_file *file_priv); 1276 1277 /* 1278 * These are exported to drivers so that they can implement fencing using 1279 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1280 */ 1281 1282 extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv); 1283 1284 /* Misc. IOCTL support (drm_ioctl.c) */ 1285 int drm_noop(struct drm_device *dev, void *data, 1286 struct drm_file *file_priv); 1287 1288 /* Cache management (drm_cache.c) */ 1289 void drm_clflush_virt_range(void *addr, unsigned long length); 1290 1291 /* DMA support (drm_dma.c) */ 1292 int drm_dma(struct drm_device *dev, void *data, struct drm_file *file_priv); 1293 1294 /* Stub support (drm_stub.h) */ 1295 1296 extern void drm_put_dev(struct drm_device *dev); 1297 extern void drm_unplug_dev(struct drm_device *dev); 1298 extern unsigned int drm_debug; 1299 extern bool drm_atomic; 1300 1301 /* Scatter Gather Support (drm_scatter.c) */ 1302 int drm_sg_alloc_ioctl(struct drm_device *dev, void *data, 1303 struct drm_file *file_priv); 1304 int drm_sg_free(struct drm_device *dev, void *data, 1305 struct drm_file *file_priv); 1306 1307 /* consistent PCI memory functions (drm_pci.c) */ 1308 extern drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size, 1309 size_t align); 1310 void drm_pci_free(struct drm_device *dev, drm_dma_handle_t *dmah); 1311 1312 /* sysfs support (drm_sysfs.c) */ 1313 extern void drm_sysfs_hotplug_event(struct drm_device *dev); 1314 1315 int drm_gem_mmap_single(struct drm_device *dev, vm_ooffset_t *offset, 1316 vm_size_t size, struct vm_object **obj_res, int nprot); 1317 void drm_gem_pager_dtr(void *obj); 1318 1319 struct ttm_bo_device; 1320 int ttm_bo_mmap_single(struct ttm_bo_device *bdev, vm_ooffset_t *offset, 1321 vm_size_t size, struct vm_object **obj_res, int nprot); 1322 struct ttm_buffer_object; 1323 void ttm_bo_release_mmap(struct ttm_buffer_object *bo); 1324 1325 void drm_device_lock_mtx(struct drm_device *dev); 1326 void drm_device_unlock_mtx(struct drm_device *dev); 1327 int drm_device_sleep_mtx(struct drm_device *dev, void *chan, int flags, 1328 const char *msg, int timeout); 1329 void drm_device_assert_mtx_locked(struct drm_device *dev); 1330 void drm_device_assert_mtx_unlocked(struct drm_device *dev); 1331 1332 void drm_device_lock_struct(struct drm_device *dev); 1333 void drm_device_unlock_struct(struct drm_device *dev); 1334 int drm_device_sleep_struct(struct drm_device *dev, void *chan, int flags, 1335 const char *msg, int timeout); 1336 void drm_device_assert_struct_locked(struct drm_device *dev); 1337 void drm_device_assert_struct_unlocked(struct drm_device *dev); 1338 1339 void drm_compat_locking_init(struct drm_device *dev); 1340 void drm_sleep_locking_init(struct drm_device *dev); 1341 1342 /* XXX glue logic, should be done in drm_pci_init(), pending drm update */ 1343 void drm_init_pdev(struct device *dev, struct pci_dev **pdev); 1344 void drm_fini_pdev(struct pci_dev **pdev); 1345 1346 /* Inline replacements for drm_alloc and friends */ 1347 static __inline__ void * 1348 drm_alloc(size_t size, struct malloc_type *area) 1349 { 1350 return kmalloc(size, area, M_WAITOK | M_NULLOK); 1351 } 1352 1353 static __inline__ void * 1354 drm_calloc(size_t nmemb, size_t size, struct malloc_type *area) 1355 { 1356 return kmalloc(size * nmemb, area, M_WAITOK | M_NULLOK | M_ZERO); 1357 } 1358 1359 static __inline__ void 1360 drm_free(void *pt, struct malloc_type *area) 1361 { 1362 /* kfree is special!!! */ 1363 if (pt != NULL) 1364 (kfree)(pt, area); 1365 } 1366 1367 static __inline__ void 1368 drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev) 1369 { 1370 map->handle = drm_ioremap_wc(dev, map); 1371 } 1372 static __inline__ void 1373 drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev) 1374 { 1375 map->handle = drm_ioremap(dev, map); 1376 } 1377 static __inline__ void 1378 drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev) 1379 { 1380 if ( map->handle && map->size ) 1381 drm_ioremapfree(map); 1382 } 1383 1384 static __inline__ struct drm_local_map * 1385 drm_core_findmap(struct drm_device *dev, unsigned long offset) 1386 { 1387 struct drm_map_list *_entry; 1388 1389 list_for_each_entry(_entry, &dev->maplist, head) { 1390 if (offset == (unsigned long)_entry->map->handle) 1391 return _entry->map; 1392 } 1393 return NULL; 1394 } 1395 1396 static __inline__ void drm_core_dropmap(struct drm_map *map) 1397 { 1398 } 1399 1400 #include <drm/drm_mem_util.h> 1401 1402 struct drm_device *drm_dev_alloc(struct drm_driver *driver, 1403 struct device *parent); 1404 void drm_dev_ref(struct drm_device *dev); 1405 void drm_dev_unref(struct drm_device *dev); 1406 int drm_dev_register(struct drm_device *dev, unsigned long flags); 1407 void drm_dev_unregister(struct drm_device *dev); 1408 int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...); 1409 1410 /* FreeBSD compatibility macros */ 1411 #define VM_OBJECT_WLOCK(object) VM_OBJECT_LOCK(object) 1412 #define VM_OBJECT_WUNLOCK(object) VM_OBJECT_UNLOCK(object) 1413 1414 #define DRM_PCIE_SPEED_25 1 1415 #define DRM_PCIE_SPEED_50 2 1416 #define DRM_PCIE_SPEED_80 4 1417 1418 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); 1419 1420 /* XXX bad */ 1421 #define drm_can_sleep() (HZ & 1) 1422 1423 #endif /* __KERNEL__ */ 1424 #endif /* _DRM_P_H_ */ 1425