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 <linux/agp_backend.h> 38 #include <linux/cdev.h> 39 #include <linux/dma-mapping.h> 40 #include <linux/file.h> 41 #include <linux/fs.h> 42 #include <linux/highmem.h> 43 #include <linux/idr.h> 44 #include <linux/init.h> 45 #include <linux/io.h> 46 #include <linux/jiffies.h> 47 #include <linux/kernel.h> 48 #include <linux/kref.h> 49 #include <linux/miscdevice.h> 50 #include <linux/mm.h> 51 #include <linux/mutex.h> 52 #include <linux/pci.h> 53 #include <linux/platform_device.h> 54 #include <linux/poll.h> 55 #include <linux/ratelimit.h> 56 #include <linux/sched.h> 57 #include <linux/slab.h> 58 #include <linux/seq_file.h> 59 #include <linux/types.h> 60 #include <linux/vmalloc.h> 61 #include <linux/workqueue.h> 62 63 #include <asm/pgalloc.h> 64 #include <asm/uaccess.h> 65 66 #include <uapi/drm/drm.h> 67 #include <uapi/drm/drm_mode.h> 68 69 #include <drm/drm_agpsupport.h> 70 #include <drm/drm_crtc.h> 71 #include <drm/drm_global.h> 72 #include <drm/drm_hashtab.h> 73 #include <drm/drm_mem_util.h> 74 #include <drm/drm_mm.h> 75 #include <drm/drm_os_linux.h> 76 #include <drm/drm_sarea.h> 77 #include <drm/drm_vma_manager.h> 78 79 #include <sys/device.h> 80 81 #include <vm/vm_extern.h> 82 #include <vm/vm_pager.h> 83 84 struct module; 85 86 struct drm_file; 87 struct drm_device; 88 struct drm_agp_head; 89 struct drm_local_map; 90 struct drm_device_dma; 91 struct drm_dma_handle; 92 struct drm_gem_object; 93 94 struct device_node; 95 struct videomode; 96 struct reservation_object; 97 struct dma_buf_attachment; 98 99 /* 100 * The following categories are defined: 101 * 102 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ... 103 * This is the category used by the DRM_DEBUG() macro. 104 * 105 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ... 106 * This is the category used by the DRM_DEBUG_DRIVER() macro. 107 * 108 * KMS: used in the modesetting code. 109 * This is the category used by the DRM_DEBUG_KMS() macro. 110 * 111 * PRIME: used in the prime code. 112 * This is the category used by the DRM_DEBUG_PRIME() macro. 113 * 114 * ATOMIC: used in the atomic code. 115 * This is the category used by the DRM_DEBUG_ATOMIC() macro. 116 * 117 * PID: used as modifier to include PID number in messages. 118 * This is the category used by the all debug macros. 119 * 120 * FIOCTL: used in failed ioctl debugging. 121 * This is the category used by the DRM_DEBUG_FIOCTL() macro. 122 * 123 * IOCTL: used in ioctl debugging. 124 * This is the category used by the DRM_DEBUG_IOCTL() macro. 125 * 126 * VBLANK: used in vblank debugging. 127 * This is the category used by the DRM_DEBUG_VBLANK() macro. 128 * 129 * VBL: used for verbose debug message in the vblank code 130 * This is the category used by the DRM_DEBUG_VBL() macro. 131 * 132 * Enabling verbose debug messages is done through the drm.debug parameter, 133 * each category being enabled by a bit. 134 * 135 * drm.debug=0x1 will enable CORE messages 136 * drm.debug=0x2 will enable DRIVER messages 137 * drm.debug=0x3 will enable CORE and DRIVER messages 138 * ... 139 * drm.debug=0x3f will enable all messages 140 * 141 * An interesting feature is that it's possible to enable verbose logging at 142 * run-time by using hw.drm.debug sysctl variable: 143 * # sysctl hw.drm.debug=0xfff 144 */ 145 #define DRM_UT_CORE 0x01 146 #define DRM_UT_DRIVER 0x02 147 #define DRM_UT_KMS 0x04 148 #define DRM_UT_PRIME 0x08 149 #define DRM_UT_ATOMIC 0x10 150 #define DRM_UT_VBL 0x20 151 /* Extra DragonFly debug categories */ 152 #ifdef __DragonFly__ 153 #define DRM_UT_RES7 0x40 /* reserved for future expansion */ 154 #define DRM_UT_RES8 0x80 /* reserved for future expansion */ 155 #define DRM_UT_PID 0x100 156 #define DRM_UT_FIOCTL 0x200 157 #define DRM_UT_IOCTL 0x400 158 #define DRM_UT_VBLANK 0x800 159 #endif 160 161 extern __printflike(2, 3) 162 void drm_ut_debug_printk(const char *function_name, 163 const char *format, ...); 164 extern __printflike(2, 3) 165 void drm_err(const char *func, const char *format, ...); 166 167 /***********************************************************************/ 168 /** \name DRM template customization defaults */ 169 /*@{*/ 170 171 /* driver capabilities and requirements mask */ 172 #define DRIVER_USE_AGP 0x1 173 #define DRIVER_PCI_DMA 0x8 174 #define DRIVER_SG 0x10 175 #define DRIVER_HAVE_DMA 0x20 176 #define DRIVER_HAVE_IRQ 0x40 177 #define DRIVER_IRQ_SHARED 0x80 178 #define DRIVER_GEM 0x1000 179 #define DRIVER_MODESET 0x2000 180 #define DRIVER_PRIME 0x4000 181 #define DRIVER_RENDER 0x8000 182 #define DRIVER_ATOMIC 0x10000 183 #define DRIVER_KMS_LEGACY_CONTEXT 0x20000 184 185 /***********************************************************************/ 186 /** \name Macros to make printk easier */ 187 /*@{*/ 188 189 #define _DRM_PRINTK(once, level, fmt, ...) \ 190 do { \ 191 printk##once(KERN_##level "[" DRM_NAME "] " fmt, \ 192 ##__VA_ARGS__); \ 193 } while (0) 194 195 #define DRM_INFO(fmt, ...) \ 196 _DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__) 197 #define DRM_NOTE(fmt, ...) \ 198 _DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__) 199 #define DRM_WARN(fmt, ...) \ 200 _DRM_PRINTK(, WARNING, fmt, ##__VA_ARGS__) 201 202 #define DRM_INFO_ONCE(fmt, ...) \ 203 _DRM_PRINTK(_once, INFO, fmt, ##__VA_ARGS__) 204 #define DRM_NOTE_ONCE(fmt, ...) \ 205 _DRM_PRINTK(_once, NOTICE, fmt, ##__VA_ARGS__) 206 #define DRM_WARN_ONCE(fmt, ...) \ 207 _DRM_PRINTK(_once, WARNING, fmt, ##__VA_ARGS__) 208 209 /** 210 * Error output. 211 * 212 * \param fmt printf() like format string. 213 * \param arg arguments 214 */ 215 #define DRM_ERROR(fmt, ...) \ 216 drm_err(__func__, fmt, ##__VA_ARGS__) 217 218 /** 219 * Rate limited error output. Like DRM_ERROR() but won't flood the log. 220 * 221 * \param fmt printf() like format string. 222 * \param arg arguments 223 */ 224 #define DRM_ERROR_RATELIMITED(fmt, ...) \ 225 ({ \ 226 static struct krate krate_derr = { .freq = 1, .count = -16 }; \ 227 \ 228 krateprintf(&krate_derr, "error: [" DRM_NAME ":%s] *ERROR* " \ 229 fmt, __func__, ##__VA_ARGS__); \ 230 }) 231 232 /** 233 * Debug output. 234 * 235 * \param fmt printf() like format string. 236 * \param arg arguments 237 */ 238 #define DRM_DEBUG(fmt, args...) \ 239 do { \ 240 if (unlikely(drm_debug & DRM_UT_CORE)) \ 241 drm_ut_debug_printk(__func__, fmt, ##args); \ 242 } while (0) 243 244 #define DRM_DEBUG_DRIVER(fmt, args...) \ 245 do { \ 246 if (unlikely(drm_debug & DRM_UT_DRIVER)) \ 247 drm_ut_debug_printk(__func__, fmt, ##args); \ 248 } while (0) 249 #define DRM_DEBUG_KMS(fmt, args...) \ 250 do { \ 251 if (unlikely(drm_debug & DRM_UT_KMS)) \ 252 drm_ut_debug_printk(__func__, fmt, ##args); \ 253 } while (0) 254 #define DRM_DEBUG_PRIME(fmt, args...) \ 255 do { \ 256 if (unlikely(drm_debug & DRM_UT_PRIME)) \ 257 drm_ut_debug_printk(__func__, fmt, ##args); \ 258 } while (0) 259 #define DRM_DEBUG_ATOMIC(fmt, args...) \ 260 do { \ 261 if (unlikely(drm_debug & DRM_UT_ATOMIC)) \ 262 drm_ut_debug_printk(__func__, fmt, ##args); \ 263 } while (0) 264 #define DRM_DEBUG_VBL(fmt, args...) \ 265 do { \ 266 if (unlikely(drm_debug & DRM_UT_VBL)) \ 267 drm_ut_debug_printk(__func__, fmt, ##args); \ 268 } while (0) 269 #ifdef __DragonFly__ 270 #define DRM_DEBUG_FIOCTL(fmt, args...) \ 271 do { \ 272 if (unlikely(drm_debug & DRM_UT_FIOCTL)) \ 273 drm_ut_debug_printk(__func__, fmt, ##args); \ 274 } while (0) 275 #define DRM_DEBUG_IOCTL(fmt, args...) \ 276 do { \ 277 if (unlikely(drm_debug & DRM_UT_IOCTL)) \ 278 drm_ut_debug_printk(__func__, fmt, ##args); \ 279 } while (0) 280 #define DRM_DEBUG_VBLANK(fmt, args...) \ 281 do { \ 282 if (unlikely(drm_debug & DRM_UT_VBLANK)) \ 283 drm_ut_debug_printk(__func__, fmt, ##args); \ 284 } while (0) 285 #endif 286 287 /*@}*/ 288 289 /***********************************************************************/ 290 /** \name Internal types and structures */ 291 /*@{*/ 292 293 #define DRM_MAX(a,b) ((a)>(b)?(a):(b)) 294 295 #define DRM_IF_VERSION(maj, min) (maj << 16 | min) 296 297 #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) 298 #define DRM_DEV_UID UID_ROOT 299 #define DRM_DEV_GID GID_WHEEL 300 301 #define DRM_CURPROC curthread 302 #define DRM_STRUCTPROC struct thread 303 #define DRM_LOCK(dev) lockmgr(&(dev)->struct_mutex, LK_EXCLUSIVE) 304 #define DRM_UNLOCK(dev) lockmgr(&(dev)->struct_mutex, LK_RELEASE) 305 306 #if defined(INVARIANTS) 307 #define DRM_LOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) != 0); 308 #define DRM_UNLOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) == 0); 309 #else 310 #define DRM_LOCK_ASSERT(d) 311 #define DRM_UNLOCK_ASSERT(d) 312 #endif 313 314 #define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS) 315 316 #define drm_get_device_from_kdev(_kdev) (_kdev->si_drv1) 317 318 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end, 319 vm_memattr_t memattr); 320 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end); 321 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa); 322 323 typedef struct drm_pci_id_list 324 { 325 int vendor; 326 int device; 327 long driver_private; 328 char *name; 329 } drm_pci_id_list_t; 330 331 /** 332 * Ioctl function type. 333 * 334 * \param inode device inode. 335 * \param file_priv DRM file private pointer. 336 * \param cmd command. 337 * \param arg argument. 338 */ 339 typedef int drm_ioctl_t(struct drm_device *dev, void *data, 340 struct drm_file *file_priv); 341 342 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, 343 unsigned long arg); 344 345 #define DRM_IOCTL_NR(n) ((n) & 0xff) 346 347 #define DRM_AUTH 0x1 348 #define DRM_MASTER 0x2 349 #define DRM_ROOT_ONLY 0x4 350 #define DRM_CONTROL_ALLOW 0x8 351 #define DRM_UNLOCKED 0x10 352 #define DRM_RENDER_ALLOW 0x20 353 354 struct drm_ioctl_desc { 355 unsigned int cmd; 356 int flags; 357 drm_ioctl_t *func; 358 unsigned int cmd_drv; 359 const char *name; 360 }; 361 362 /** 363 * Creates a driver or general drm_ioctl_desc array entry for the given 364 * ioctl, for use by drm_ioctl(). 365 */ 366 367 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ 368 [DRM_IOCTL_NR(DRM_##ioctl)] = { \ 369 .cmd = DRM_##ioctl, \ 370 .func = _func, \ 371 .flags = _flags, \ 372 .cmd_drv = DRM_IOCTL_##ioctl, \ 373 .name = #ioctl \ 374 } 375 376 /* Event queued up for userspace to read */ 377 struct drm_pending_event { 378 struct drm_event *event; 379 struct list_head link; 380 struct list_head pending_link; 381 struct drm_file *file_priv; 382 pid_t pid; /* pid of requester, no guarantee it's valid by the time 383 we deliver the event, for tracing only */ 384 void (*destroy)(struct drm_pending_event *event); 385 }; 386 387 /* initial implementaton using a linked list - todo hashtab */ 388 struct drm_prime_file_private { 389 struct list_head head; 390 struct lock lock; 391 }; 392 393 /** File private data */ 394 struct drm_file { 395 unsigned authenticated :1; 396 /* Whether we're master for a minor. Protected by master_mutex */ 397 unsigned is_master :1; 398 /* true when the client has asked us to expose stereo 3D mode flags */ 399 unsigned stereo_allowed :1; 400 /* 401 * true if client understands CRTC primary planes and cursor planes 402 * in the plane list 403 */ 404 unsigned universal_planes:1; 405 /* true if client understands atomic properties */ 406 unsigned atomic:1; 407 /* 408 * This client is allowed to gain master privileges for @master. 409 * Protected by struct drm_device::master_mutex. 410 */ 411 unsigned allowed_master:1; 412 413 pid_t pid; 414 uid_t uid; 415 drm_magic_t magic; 416 struct list_head lhead; 417 struct drm_minor *minor; 418 unsigned long lock_count; 419 420 /** Mapping of mm object handles to object pointers. */ 421 struct idr object_idr; 422 /** Lock for synchronization of access to object_idr. */ 423 struct lock table_lock; 424 425 struct file *filp; 426 void *driver_priv; 427 428 struct drm_master *masterp; 429 /** 430 * fbs - List of framebuffers associated with this file. 431 * 432 * Protected by fbs_lock. Note that the fbs list holds a reference on 433 * the fb object to prevent it from untimely disappearing. 434 */ 435 struct list_head fbs; 436 struct lock fbs_lock; 437 438 /** User-created blob properties; this retains a reference on the 439 * property. */ 440 struct list_head blobs; 441 442 wait_queue_head_t event_wait; 443 struct list_head pending_event_list; 444 struct list_head event_list; 445 int event_space; 446 447 struct lock event_read_lock; 448 449 struct drm_prime_file_private prime; 450 451 #ifdef __DragonFly__ 452 struct drm_device *dev; 453 int master; 454 unsigned long ioctl_count; 455 struct kqinfo dkq; 456 #endif 457 }; 458 459 /** 460 * Lock data. 461 */ 462 struct drm_lock_data { 463 struct drm_hw_lock *hw_lock; /**< Hardware lock */ 464 /** Private of lock holder's file (NULL=kernel) */ 465 struct drm_file *file_priv; 466 wait_queue_head_t lock_queue; /**< Queue of blocked processes */ 467 unsigned long lock_time; /**< Time of last lock in jiffies */ 468 struct spinlock spinlock; 469 uint32_t kernel_waiters; 470 uint32_t user_waiters; 471 int idle_has_lock; 472 }; 473 474 /** 475 * GEM specific mm private for tracking GEM objects 476 */ 477 struct drm_gem_mm { 478 struct drm_vma_offset_manager vma_manager; 479 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */ 480 struct drm_open_hash offset_hash; /**< User token hash table for maps */ 481 struct unrhdr *idxunr; 482 }; 483 484 /** 485 * struct drm_master - drm master structure 486 * 487 * @refcount: Refcount for this master object. 488 * @minor: Link back to minor char device we are master for. Immutable. 489 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex. 490 * @unique_len: Length of unique field. Protected by drm_global_mutex. 491 * @magic_map: Map of used authentication tokens. Protected by struct_mutex. 492 * @lock: DRI lock information. 493 * @driver_priv: Pointer to driver-private information. 494 */ 495 struct drm_master { 496 struct kref refcount; 497 struct drm_minor *minor; 498 char *unique; 499 int unique_len; 500 struct idr magic_map; 501 struct drm_lock_data lock; 502 void *driver_priv; 503 }; 504 505 /* Size of ringbuffer for vblank timestamps. Just double-buffer 506 * in initial implementation. 507 */ 508 #define DRM_VBLANKTIME_RBSIZE 2 509 510 /* Flags and return codes for get_vblank_timestamp() driver function. */ 511 #define DRM_CALLED_FROM_VBLIRQ 1 512 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) 513 #define DRM_VBLANKTIME_IN_VBLANK (1 << 1) 514 515 /* get_scanout_position() return flags */ 516 #define DRM_SCANOUTPOS_VALID (1 << 0) 517 #define DRM_SCANOUTPOS_IN_VBLANK (1 << 1) 518 #define DRM_SCANOUTPOS_ACCURATE (1 << 2) 519 520 /** 521 * DRM driver structure. This structure represent the common code for 522 * a family of cards. There will one drm_device for each card present 523 * in this family 524 */ 525 struct drm_driver { 526 int (*load) (struct drm_device *, unsigned long flags); 527 int (*firstopen) (struct drm_device *); 528 int (*open) (struct drm_device *, struct drm_file *); 529 void (*preclose) (struct drm_device *, struct drm_file *file_priv); 530 void (*postclose) (struct drm_device *, struct drm_file *); 531 void (*lastclose) (struct drm_device *); 532 int (*unload) (struct drm_device *); 533 int (*suspend) (struct drm_device *, pm_message_t state); 534 int (*resume) (struct drm_device *); 535 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv); 536 int (*dma_quiescent) (struct drm_device *); 537 int (*context_dtor) (struct drm_device *dev, int context); 538 int (*set_busid)(struct drm_device *dev, struct drm_master *master); 539 540 /** 541 * get_vblank_counter - get raw hardware vblank counter 542 * @dev: DRM device 543 * @pipe: counter to fetch 544 * 545 * Driver callback for fetching a raw hardware vblank counter for @crtc. 546 * If a device doesn't have a hardware counter, the driver can simply 547 * return the value of drm_vblank_count. The DRM core will account for 548 * missed vblank events while interrupts where disabled based on system 549 * timestamps. 550 * 551 * Wraparound handling and loss of events due to modesetting is dealt 552 * with in the DRM core code. 553 * 554 * RETURNS 555 * Raw vblank counter value. 556 */ 557 u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe); 558 559 /** 560 * enable_vblank - enable vblank interrupt events 561 * @dev: DRM device 562 * @pipe: which irq to enable 563 * 564 * Enable vblank interrupts for @crtc. If the device doesn't have 565 * a hardware vblank counter, this routine should be a no-op, since 566 * interrupts will have to stay on to keep the count accurate. 567 * 568 * RETURNS 569 * Zero on success, appropriate errno if the given @crtc's vblank 570 * interrupt cannot be enabled. 571 */ 572 int (*enable_vblank) (struct drm_device *dev, unsigned int pipe); 573 574 /** 575 * disable_vblank - disable vblank interrupt events 576 * @dev: DRM device 577 * @pipe: which irq to enable 578 * 579 * Disable vblank interrupts for @crtc. If the device doesn't have 580 * a hardware vblank counter, this routine should be a no-op, since 581 * interrupts will have to stay on to keep the count accurate. 582 */ 583 void (*disable_vblank) (struct drm_device *dev, unsigned int pipe); 584 585 /** 586 * Called by \c drm_device_is_agp. Typically used to determine if a 587 * card is really attached to AGP or not. 588 * 589 * \param dev DRM device handle 590 * 591 * \returns 592 * One of three values is returned depending on whether or not the 593 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP 594 * (return of 1), or may or may not be AGP (return of 2). 595 */ 596 int (*device_is_agp) (struct drm_device *dev); 597 598 /** 599 * Called by vblank timestamping code. 600 * 601 * Return the current display scanout position from a crtc, and an 602 * optional accurate ktime_get timestamp of when position was measured. 603 * 604 * \param dev DRM device. 605 * \param pipe Id of the crtc to query. 606 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0). 607 * \param *vpos Target location for current vertical scanout position. 608 * \param *hpos Target location for current horizontal scanout position. 609 * \param *stime Target location for timestamp taken immediately before 610 * scanout position query. Can be NULL to skip timestamp. 611 * \param *etime Target location for timestamp taken immediately after 612 * scanout position query. Can be NULL to skip timestamp. 613 * \param mode Current display timings. 614 * 615 * Returns vpos as a positive number while in active scanout area. 616 * Returns vpos as a negative number inside vblank, counting the number 617 * of scanlines to go until end of vblank, e.g., -1 means "one scanline 618 * until start of active scanout / end of vblank." 619 * 620 * \return Flags, or'ed together as follows: 621 * 622 * DRM_SCANOUTPOS_VALID = Query successful. 623 * DRM_SCANOUTPOS_INVBL = Inside vblank. 624 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of 625 * this flag means that returned position may be offset by a constant 626 * but unknown small number of scanlines wrt. real scanout position. 627 * 628 */ 629 int (*get_scanout_position) (struct drm_device *dev, unsigned int pipe, 630 unsigned int flags, int *vpos, int *hpos, 631 ktime_t *stime, ktime_t *etime, 632 const struct drm_display_mode *mode); 633 634 /** 635 * Called by \c drm_get_last_vbltimestamp. Should return a precise 636 * timestamp when the most recent VBLANK interval ended or will end. 637 * 638 * Specifically, the timestamp in @vblank_time should correspond as 639 * closely as possible to the time when the first video scanline of 640 * the video frame after the end of VBLANK will start scanning out, 641 * the time immediately after end of the VBLANK interval. If the 642 * @crtc is currently inside VBLANK, this will be a time in the future. 643 * If the @crtc is currently scanning out a frame, this will be the 644 * past start time of the current scanout. This is meant to adhere 645 * to the OpenML OML_sync_control extension specification. 646 * 647 * \param dev dev DRM device handle. 648 * \param pipe crtc for which timestamp should be returned. 649 * \param *max_error Maximum allowable timestamp error in nanoseconds. 650 * Implementation should strive to provide timestamp 651 * with an error of at most *max_error nanoseconds. 652 * Returns true upper bound on error for timestamp. 653 * \param *vblank_time Target location for returned vblank timestamp. 654 * \param flags 0 = Defaults, no special treatment needed. 655 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank 656 * irq handler. Some drivers need to apply some workarounds 657 * for gpu-specific vblank irq quirks if flag is set. 658 * 659 * \returns 660 * Zero if timestamping isn't supported in current display mode or a 661 * negative number on failure. A positive status code on success, 662 * which describes how the vblank_time timestamp was computed. 663 */ 664 int (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe, 665 int *max_error, 666 struct timeval *vblank_time, 667 unsigned flags); 668 669 /* these have to be filled in */ 670 671 irqreturn_t(*irq_handler) (int irq, void *arg); 672 void (*irq_preinstall) (struct drm_device *dev); 673 int (*irq_postinstall) (struct drm_device *dev); 674 void (*irq_uninstall) (struct drm_device *dev); 675 676 /* Master routines */ 677 int (*master_create)(struct drm_device *dev, struct drm_master *master); 678 void (*master_destroy)(struct drm_device *dev, struct drm_master *master); 679 /** 680 * master_set is called whenever the minor master is set. 681 * master_drop is called whenever the minor master is dropped. 682 */ 683 684 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv, 685 bool from_open); 686 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv, 687 bool from_release); 688 689 int (*debugfs_init)(struct drm_minor *minor); 690 void (*debugfs_cleanup)(struct drm_minor *minor); 691 692 /** 693 * @gem_free_object: deconstructor for drm_gem_objects 694 * 695 * This is deprecated and should not be used by new drivers. Use 696 * @gem_free_object_unlocked instead. 697 */ 698 void (*gem_free_object) (struct drm_gem_object *obj); 699 700 /** 701 * @gem_free_object_unlocked: deconstructor for drm_gem_objects 702 * 703 * This is for drivers which are not encumbered with dev->struct_mutex 704 * legacy locking schemes. Use this hook instead of @gem_free_object. 705 */ 706 void (*gem_free_object_unlocked) (struct drm_gem_object *obj); 707 708 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); 709 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); 710 711 /** 712 * Hook for allocating the GEM object struct, for use by core 713 * helpers. 714 */ 715 struct drm_gem_object *(*gem_create_object)(struct drm_device *dev, 716 size_t size); 717 718 /* prime: */ 719 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */ 720 int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv, 721 uint32_t handle, uint32_t flags, int *prime_fd); 722 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */ 723 int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv, 724 int prime_fd, uint32_t *handle); 725 /* export GEM -> dmabuf */ 726 struct dma_buf * (*gem_prime_export)(struct drm_device *dev, 727 struct drm_gem_object *obj, int flags); 728 /* import dmabuf -> GEM */ 729 struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, 730 struct dma_buf *dma_buf); 731 /* low-level interface used by drm_gem_prime_{import,export} */ 732 int (*gem_prime_pin)(struct drm_gem_object *obj); 733 void (*gem_prime_unpin)(struct drm_gem_object *obj); 734 struct reservation_object * (*gem_prime_res_obj)( 735 struct drm_gem_object *obj); 736 struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj); 737 struct drm_gem_object *(*gem_prime_import_sg_table)( 738 struct drm_device *dev, 739 struct dma_buf_attachment *attach, 740 struct sg_table *sgt); 741 void *(*gem_prime_vmap)(struct drm_gem_object *obj); 742 void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr); 743 int (*gem_prime_mmap)(struct drm_gem_object *obj, 744 struct vm_area_struct *vma); 745 746 /* vga arb irq handler */ 747 void (*vgaarb_irq)(struct drm_device *dev, bool state); 748 749 /* dumb alloc support */ 750 int (*dumb_create)(struct drm_file *file_priv, 751 struct drm_device *dev, 752 struct drm_mode_create_dumb *args); 753 int (*dumb_map_offset)(struct drm_file *file_priv, 754 struct drm_device *dev, uint32_t handle, 755 uint64_t *offset); 756 int (*dumb_destroy)(struct drm_file *file_priv, 757 struct drm_device *dev, 758 uint32_t handle); 759 760 /* Driver private ops for this object */ 761 struct cdev_pager_ops *gem_vm_ops; 762 763 int major; 764 int minor; 765 int patchlevel; 766 char *name; 767 char *desc; 768 char *date; 769 770 u32 driver_features; 771 int dev_priv_size; 772 const struct drm_ioctl_desc *ioctls; 773 int num_ioctls; 774 const struct file_operations *fops; 775 776 /* List of devices hanging off this driver with stealth attach. */ 777 struct list_head legacy_dev_list; 778 #ifdef __DragonFly__ 779 int (*sysctl_init) (struct drm_device *dev, 780 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 781 void (*sysctl_cleanup) (struct drm_device *dev); 782 #endif /* __DragonFly__ */ 783 }; 784 785 enum drm_minor_type { 786 DRM_MINOR_LEGACY, 787 DRM_MINOR_CONTROL, 788 DRM_MINOR_RENDER, 789 DRM_MINOR_CNT, 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 struct device *kdev; /**< Linux device */ 820 struct drm_device *dev; 821 822 struct dentry *debugfs_root; 823 824 struct list_head debugfs_list; 825 struct lock debugfs_lock; /* Protects debugfs_list. */ 826 827 /* currently active master for this node. Protected by master_mutex */ 828 struct drm_master *master; 829 }; 830 831 832 struct drm_pending_vblank_event { 833 struct drm_pending_event base; 834 unsigned int pipe; 835 struct drm_event_vblank event; 836 }; 837 838 struct drm_vblank_crtc { 839 struct drm_device *dev; /* pointer to the drm_device */ 840 wait_queue_head_t queue; /**< VBLANK wait queue */ 841 struct timer_list disable_timer; /* delayed disable timer */ 842 843 /* vblank counter, protected by dev->vblank_time_lock for writes */ 844 u32 count; 845 /* vblank timestamps, protected by dev->vblank_time_lock for writes */ 846 struct timeval time[DRM_VBLANKTIME_RBSIZE]; 847 848 atomic_t refcount; /* number of users of vblank interruptsper crtc */ 849 u32 last; /* protected by dev->vbl_lock, used */ 850 /* for wraparound handling */ 851 u32 last_wait; /* Last vblank seqno waited per CRTC */ 852 unsigned int inmodeset; /* Display driver is setting mode */ 853 unsigned int pipe; /* crtc index */ 854 int framedur_ns; /* frame/field duration in ns */ 855 int linedur_ns; /* line duration in ns */ 856 bool enabled; /* so we don't call enable more than 857 once per disable */ 858 }; 859 860 struct drm_sysctl_info { 861 struct sysctl_ctx_list ctx; 862 char name[2]; 863 }; 864 865 /* Length for the array of resource pointers for drm_get_resource_*. */ 866 #define DRM_MAX_PCI_RESOURCE 6 867 868 /** 869 * DRM device structure. This structure represent a complete card that 870 * may contain multiple heads. 871 */ 872 struct drm_device { 873 struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */ 874 int if_version; /**< Highest interface version set */ 875 876 int unique_len; /* Length of unique field */ 877 struct cdev *devnode; /* Device number for mknod */ 878 879 int flags; /* Flags to open(2) */ 880 881 struct lwkt_serialize irq_lock; /* protects irq condition checks */ 882 struct lock dev_lock; /* protects everything else */ 883 884 /** \name Lifetime Management */ 885 /*@{ */ 886 struct kref ref; /**< Object ref-count */ 887 struct device *dev; /**< Device structure of bus-device */ 888 struct drm_driver *driver; /**< DRM driver managing the device */ 889 void *dev_private; /**< DRM driver private data */ 890 struct drm_minor *control; /**< Control node */ 891 struct drm_minor *primary; /**< Primary node */ 892 struct drm_minor *render; /**< Render node */ 893 atomic_t unplugged; /**< Flag whether dev is dead */ 894 struct inode *anon_inode; /**< inode for private address-space */ 895 char *unique; /**< unique name of the device */ 896 /*@} */ 897 898 /** \name Locks */ 899 /*@{ */ 900 struct lock struct_mutex; /**< For others */ 901 struct lock master_mutex; /**< For drm_minor::master and drm_file::is_master */ 902 /*@} */ 903 904 /** \name Usage Counters */ 905 /*@{ */ 906 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ 907 struct spinlock buf_lock; /**< For drm_device::buf_use and a few other things. */ 908 int buf_use; /**< Buffers in use -- cannot alloc */ 909 atomic_t buf_alloc; /**< Buffer allocation in progress */ 910 /*@} */ 911 912 /** \name Performance counters */ 913 /*@{ */ 914 unsigned long counters; 915 enum drm_stat_type types[15]; 916 atomic_t counts[15]; 917 /*@} */ 918 919 struct idr magic_map; 920 921 struct lock filelist_mutex; 922 struct list_head filelist; 923 924 /** \name Memory management */ 925 /*@{ */ 926 struct list_head maplist; /**< Linked list of regions */ 927 struct drm_open_hash map_hash; /**< User token hash table for maps */ 928 929 /** \name Context handle management */ 930 /*@{ */ 931 struct list_head ctxlist; /**< Linked list of context handles */ 932 struct lock ctxlist_mutex; /**< For ctxlist */ 933 934 struct idr ctx_idr; 935 936 struct list_head vmalist; /**< List of vmas (for debugging) */ 937 938 /*@} */ 939 940 struct drm_lock_data lock; /* Information on hardware lock */ 941 942 /** \name DMA support */ 943 /*@{ */ 944 struct drm_device_dma *dma; /**< Optional pointer for DMA support */ 945 /*@} */ 946 947 /** \name Context support */ 948 /*@{ */ 949 950 __volatile__ long context_flag; /**< Context swapping flag */ 951 int last_context; /**< Last current context */ 952 /*@} */ 953 954 /** \name VBLANK IRQ support */ 955 /*@{ */ 956 bool irq_enabled; 957 int irq; 958 959 /* 960 * If true, vblank interrupt will be disabled immediately when the 961 * refcount drops to zero, as opposed to via the vblank disable 962 * timer. 963 * This can be set to true it the hardware has a working vblank 964 * counter and the driver uses drm_vblank_on() and drm_vblank_off() 965 * appropriately. 966 */ 967 bool vblank_disable_immediate; 968 969 /* array of size num_crtcs */ 970 struct drm_vblank_crtc *vblank; 971 972 struct lock vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ 973 struct lock vbl_lock; 974 975 u32 max_vblank_count; /**< size of vblank counter register */ 976 977 /** 978 * List of events 979 */ 980 struct list_head vblank_event_list; 981 struct lock event_lock; 982 983 /*@} */ 984 985 struct sigio *buf_sigio; /* Processes waiting for SIGIO */ 986 struct drm_agp_head *agp; /**< AGP data */ 987 988 struct pci_dev *pdev; /**< PCI device structure */ 989 #ifdef __alpha__ 990 struct pci_controller *hose; 991 #endif 992 993 struct platform_device *platformdev; /**< Platform device struture */ 994 struct virtio_device *virtdev; 995 996 struct drm_sg_mem *sg; /**< Scatter gather memory */ 997 unsigned int num_crtcs; /**< Number of CRTCs on this device */ 998 999 void *drm_ttm_bdev; 1000 1001 struct { 1002 int context; 1003 struct drm_hw_lock *lock; 1004 } sigdata; 1005 1006 struct drm_local_map *agp_buffer_map; 1007 unsigned int agp_buffer_token; 1008 1009 struct drm_mode_config mode_config; /**< Current mode config */ 1010 1011 /** \name GEM information */ 1012 /*@{ */ 1013 struct lock object_name_lock; 1014 struct idr object_name_idr; 1015 struct drm_vma_offset_manager *vma_offset_manager; 1016 /*@} */ 1017 int switch_power_state; 1018 #ifdef __DragonFly__ 1019 /* Storage of resource pointers for drm_get_resource_* */ 1020 struct resource *pcir[DRM_MAX_PCI_RESOURCE]; 1021 int pcirid[DRM_MAX_PCI_RESOURCE]; 1022 1023 int pci_domain; 1024 int pci_bus; 1025 int pci_slot; 1026 int pci_func; 1027 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 1028 char busid_str[128]; 1029 int modesetting; 1030 void *mm_private; 1031 struct drm_sysctl_info *sysctl; 1032 #endif 1033 }; 1034 1035 #define DRM_SWITCH_POWER_ON 0 1036 #define DRM_SWITCH_POWER_OFF 1 1037 #define DRM_SWITCH_POWER_CHANGING 2 1038 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3 1039 1040 static __inline__ int drm_core_check_feature(struct drm_device *dev, 1041 int feature) 1042 { 1043 return ((dev->driver->driver_features & feature) ? 1 : 0); 1044 } 1045 1046 static inline void drm_device_set_unplugged(struct drm_device *dev) 1047 { 1048 smp_wmb(); 1049 atomic_set(&dev->unplugged, 1); 1050 } 1051 1052 static inline int drm_device_is_unplugged(struct drm_device *dev) 1053 { 1054 int ret = atomic_read(&dev->unplugged); 1055 smp_rmb(); 1056 return ret; 1057 } 1058 1059 static inline bool drm_is_render_client(const struct drm_file *file_priv) 1060 { 1061 return file_priv->minor->type == DRM_MINOR_RENDER; 1062 } 1063 1064 static inline bool drm_is_control_client(const struct drm_file *file_priv) 1065 { 1066 return file_priv->minor->type == DRM_MINOR_CONTROL; 1067 } 1068 1069 static inline bool drm_is_primary_client(const struct drm_file *file_priv) 1070 { 1071 return file_priv->minor->type == DRM_MINOR_LEGACY; 1072 } 1073 1074 /******************************************************************/ 1075 /** \name Internal function definitions */ 1076 /*@{*/ 1077 1078 /* Driver support (drm_drv.h) */ 1079 extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv); 1080 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist); 1081 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist); 1082 int drm_create_cdevs(device_t kdev); 1083 d_ioctl_t drm_ioctl; 1084 extern long drm_compat_ioctl(struct file *filp, 1085 unsigned int cmd, unsigned long arg); 1086 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); 1087 1088 /* File Operations (drm_fops.c) */ 1089 d_open_t drm_open; 1090 d_close_t drm_close; 1091 d_read_t drm_read; 1092 d_kqfilter_t drm_kqfilter; 1093 int drm_release(device_t kdev); 1094 1095 d_mmap_t drm_mmap; 1096 d_mmap_single_t drm_mmap_single; 1097 1098 void drm_cdevpriv_dtor(void *cd); 1099 1100 int drm_add_busid_modesetting(struct drm_device *dev, 1101 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 1102 1103 /* File operations helpers (drm_fops.c) */ 1104 extern int drm_open_helper(struct cdev *kdev, int flags, int fmt, 1105 DRM_STRUCTPROC *p, 1106 struct drm_device *dev, 1107 struct file *fp); 1108 1109 int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv); 1110 int drm_event_reserve_init_locked(struct drm_device *dev, 1111 struct drm_file *file_priv, 1112 struct drm_pending_event *p, 1113 struct drm_event *e); 1114 int drm_event_reserve_init(struct drm_device *dev, 1115 struct drm_file *file_priv, 1116 struct drm_pending_event *p, 1117 struct drm_event *e); 1118 void drm_event_cancel_free(struct drm_device *dev, 1119 struct drm_pending_event *p); 1120 void drm_send_event_locked(struct drm_device *dev, struct drm_pending_event *e); 1121 void drm_send_event(struct drm_device *dev, struct drm_pending_event *e); 1122 1123 /* Misc. IOCTL support (drm_ioctl.c) */ 1124 int drm_noop(struct drm_device *dev, void *data, 1125 struct drm_file *file_priv); 1126 int drm_invalid_op(struct drm_device *dev, void *data, 1127 struct drm_file *file_priv); 1128 1129 /* Cache management (drm_cache.c) */ 1130 void drm_clflush_pages(struct page *pages[], unsigned long num_pages); 1131 void drm_clflush_sg(struct sg_table *st); 1132 void drm_clflush_virt_range(void *addr, unsigned long length); 1133 1134 /* 1135 * These are exported to drivers so that they can implement fencing using 1136 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1137 */ 1138 1139 unsigned long drm_get_resource_start(struct drm_device *dev, 1140 unsigned int resource); 1141 unsigned long drm_get_resource_len(struct drm_device *dev, 1142 unsigned int resource); 1143 1144 /* IRQ support (drm_irq.h) */ 1145 extern int drm_irq_install(struct drm_device *dev, int irq); 1146 extern int drm_irq_uninstall(struct drm_device *dev); 1147 1148 extern int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs); 1149 extern int drm_wait_vblank(struct drm_device *dev, void *data, 1150 struct drm_file *filp); 1151 extern u32 drm_vblank_count(struct drm_device *dev, unsigned int pipe); 1152 extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc); 1153 extern u32 drm_vblank_count_and_time(struct drm_device *dev, unsigned int pipe, 1154 struct timeval *vblanktime); 1155 extern u32 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc, 1156 struct timeval *vblanktime); 1157 extern void drm_send_vblank_event(struct drm_device *dev, unsigned int pipe, 1158 struct drm_pending_vblank_event *e); 1159 extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc, 1160 struct drm_pending_vblank_event *e); 1161 extern void drm_arm_vblank_event(struct drm_device *dev, unsigned int pipe, 1162 struct drm_pending_vblank_event *e); 1163 extern void drm_crtc_arm_vblank_event(struct drm_crtc *crtc, 1164 struct drm_pending_vblank_event *e); 1165 extern bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe); 1166 extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc); 1167 extern int drm_vblank_get(struct drm_device *dev, unsigned int pipe); 1168 extern void drm_vblank_put(struct drm_device *dev, unsigned int pipe); 1169 extern int drm_crtc_vblank_get(struct drm_crtc *crtc); 1170 extern void drm_crtc_vblank_put(struct drm_crtc *crtc); 1171 extern void drm_wait_one_vblank(struct drm_device *dev, unsigned int pipe); 1172 extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc); 1173 extern void drm_vblank_off(struct drm_device *dev, unsigned int pipe); 1174 extern void drm_vblank_on(struct drm_device *dev, unsigned int pipe); 1175 extern void drm_crtc_vblank_off(struct drm_crtc *crtc); 1176 extern void drm_crtc_vblank_reset(struct drm_crtc *crtc); 1177 extern void drm_crtc_vblank_on(struct drm_crtc *crtc); 1178 extern void drm_vblank_cleanup(struct drm_device *dev); 1179 extern u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe); 1180 1181 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, 1182 unsigned int pipe, int *max_error, 1183 struct timeval *vblank_time, 1184 unsigned flags, 1185 const struct drm_display_mode *mode); 1186 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc, 1187 const struct drm_display_mode *mode); 1188 1189 /** 1190 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC 1191 * @crtc: which CRTC's vblank waitqueue to retrieve 1192 * 1193 * This function returns a pointer to the vblank waitqueue for the CRTC. 1194 * Drivers can use this to implement vblank waits using wait_event() & co. 1195 */ 1196 static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc) 1197 { 1198 return &crtc->dev->vblank[drm_crtc_index(crtc)].queue; 1199 } 1200 1201 /* Modesetting support */ 1202 extern void drm_vblank_pre_modeset(struct drm_device *dev, unsigned int pipe); 1203 extern void drm_vblank_post_modeset(struct drm_device *dev, unsigned int pipe); 1204 1205 /* Stub support (drm_stub.h) */ 1206 extern struct drm_master *drm_master_get(struct drm_master *master); 1207 extern void drm_master_put(struct drm_master **master); 1208 1209 extern void drm_put_dev(struct drm_device *dev); 1210 extern void drm_unplug_dev(struct drm_device *dev); 1211 extern unsigned int drm_debug; 1212 extern bool drm_atomic; 1213 1214 /* Debugfs support */ 1215 #if defined(CONFIG_DEBUG_FS) 1216 extern int drm_debugfs_create_files(const struct drm_info_list *files, 1217 int count, struct dentry *root, 1218 struct drm_minor *minor); 1219 extern int drm_debugfs_remove_files(const struct drm_info_list *files, 1220 int count, struct drm_minor *minor); 1221 #else 1222 static inline int drm_debugfs_create_files(const struct drm_info_list *files, 1223 int count, struct dentry *root, 1224 struct drm_minor *minor) 1225 { 1226 return 0; 1227 } 1228 1229 static inline int drm_debugfs_remove_files(const struct drm_info_list *files, 1230 int count, struct drm_minor *minor) 1231 { 1232 return 0; 1233 } 1234 #endif 1235 1236 /* sysctl support (drm_sysctl.h) */ 1237 extern int drm_sysctl_init(struct drm_device *dev); 1238 extern int drm_sysctl_cleanup(struct drm_device *dev); 1239 1240 /* XXX: These are here only because of drm_sysctl.c */ 1241 extern int drm_vblank_offdelay; 1242 extern unsigned int drm_timestamp_precision; 1243 1244 int drm_gem_mmap_single(struct drm_device *dev, vm_ooffset_t *offset, 1245 vm_size_t size, struct vm_object **obj_res, int nprot); 1246 1247 extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev, 1248 struct drm_gem_object *obj, 1249 int flags); 1250 extern int drm_gem_prime_handle_to_fd(struct drm_device *dev, 1251 struct drm_file *file_priv, uint32_t handle, uint32_t flags, 1252 int *prime_fd); 1253 extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev, 1254 struct dma_buf *dma_buf); 1255 extern int drm_gem_prime_fd_to_handle(struct drm_device *dev, 1256 struct drm_file *file_priv, int prime_fd, uint32_t *handle); 1257 extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf); 1258 1259 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages, 1260 dma_addr_t *addrs, int max_pages); 1261 extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages); 1262 extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg); 1263 1264 1265 extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size, 1266 size_t align); 1267 extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah); 1268 1269 /* sysfs support (drm_sysfs.c) */ 1270 extern void drm_sysfs_hotplug_event(struct drm_device *dev); 1271 1272 struct ttm_bo_device; 1273 int ttm_bo_mmap_single(struct drm_device *dev, vm_ooffset_t *offset, 1274 vm_size_t size, struct vm_object **obj_res, int nprot); 1275 struct ttm_buffer_object; 1276 1277 /* simplified version of kvasnprintf() for drm needs. */ 1278 char *drm_vasprintf(int flags, const char *format, va_list ap) __printflike(2, 0); 1279 char *drm_asprintf(int flags, const char *format, ...) __printflike(2, 3); 1280 1281 /* XXX glue logic, should be done in drm_pci_init(), pending drm update */ 1282 void drm_init_pdev(device_t dev, struct pci_dev **pdev); 1283 void drm_fini_pdev(struct pci_dev **pdev); 1284 void drm_print_pdev(struct pci_dev *pdev); 1285 1286 /* Inline drm_free() helper for area kfree() */ 1287 static __inline__ void 1288 drm_free(void *pt, struct malloc_type *area) 1289 { 1290 /* kfree is special!!! */ 1291 if (pt != NULL) 1292 (kfree)(pt, area); 1293 } 1294 1295 struct drm_device *drm_dev_alloc(struct drm_driver *driver, 1296 struct device *parent); 1297 void drm_dev_ref(struct drm_device *dev); 1298 void drm_dev_unref(struct drm_device *dev); 1299 int drm_dev_register(struct drm_device *dev, unsigned long flags); 1300 void drm_dev_unregister(struct drm_device *dev); 1301 int drm_dev_set_unique(struct drm_device *dev, const char *name); 1302 1303 struct drm_minor *drm_minor_acquire(unsigned int minor_id); 1304 void drm_minor_release(struct drm_minor *minor); 1305 1306 /*@}*/ 1307 1308 /* PCI section */ 1309 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev) 1310 { 1311 if (dev->driver->device_is_agp != NULL) { 1312 int err = (*dev->driver->device_is_agp) (dev); 1313 1314 if (err != 2) { 1315 return err; 1316 } 1317 } 1318 1319 return (pci_find_extcap(dev->pdev->dev.bsddev, PCIY_AGP, NULL) == 0); 1320 } 1321 void drm_pci_agp_destroy(struct drm_device *dev); 1322 1323 extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver); 1324 extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver); 1325 #ifdef CONFIG_PCI 1326 extern int drm_get_pci_dev(struct pci_dev *pdev, 1327 const struct pci_device_id *ent, 1328 struct drm_driver *driver); 1329 extern int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master); 1330 #else 1331 static inline int drm_get_pci_dev(struct pci_dev *pdev, 1332 const struct pci_device_id *ent, 1333 struct drm_driver *driver) 1334 { 1335 return -ENOSYS; 1336 } 1337 1338 static inline int drm_pci_set_busid(struct drm_device *dev, 1339 struct drm_master *master) 1340 { 1341 return -ENOSYS; 1342 } 1343 #endif 1344 1345 #define DRM_PCIE_SPEED_25 1 1346 #define DRM_PCIE_SPEED_50 2 1347 #define DRM_PCIE_SPEED_80 4 1348 1349 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); 1350 extern int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw); 1351 1352 /* platform section */ 1353 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device); 1354 extern int drm_platform_set_busid(struct drm_device *d, struct drm_master *m); 1355 1356 /* XXX bad */ 1357 #define drm_can_sleep() (HZ & 1) 1358 1359 #endif /* __KERNEL__ */ 1360 1361 /* helper for handling conditionals in various for_each macros */ 1362 #define for_each_if(condition) if (!(condition)) {} else 1363 1364 #endif 1365