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/mutex.h> 84 85 #include <linux/atomic.h> 86 #include <linux/bug.h> 87 #include <linux/dma-mapping.h> 88 #include <linux/capability.h> 89 #include <linux/err.h> 90 #include <linux/idr.h> 91 #include <linux/pci.h> 92 #include <linux/jiffies.h> 93 #include <linux/kernel.h> 94 #include <linux/fs.h> 95 #include <linux/kref.h> 96 #include <linux/list.h> 97 #include <linux/mm.h> 98 #include <linux/moduleparam.h> 99 #include <linux/mutex.h> 100 #include <linux/slab.h> 101 #include <linux/scatterlist.h> 102 #include <linux/timer.h> 103 #include <asm/io.h> 104 #include <linux/seq_file.h> 105 #include <linux/types.h> 106 #include <linux/vmalloc.h> 107 #include <linux/wait.h> 108 #include <linux/workqueue.h> 109 110 #include <asm/uaccess.h> 111 112 #include <uapi_drm/drm.h> 113 #include <uapi_drm/drm_mode.h> 114 115 #include <drm/drm_agpsupport.h> 116 #include <drm/drm_crtc.h> 117 #include <drm/drm_global.h> 118 #include <drm/drm_hashtab.h> 119 #include <drm/drm_mem_util.h> 120 #include <drm/drm_mm.h> 121 #include <drm/drm_os_linux.h> 122 #include <uapi_drm/drm_sarea.h> 123 #include <drm/drm_vma_manager.h> 124 125 struct drm_file; 126 struct drm_device; 127 struct drm_agp_head; 128 struct drm_local_map; 129 struct drm_device_dma; 130 struct drm_dma_handle; 131 struct drm_gem_object; 132 133 struct device_node; 134 #ifdef CONFIG_VIDEOMODE_HELPERS 135 struct videomode; /* XXX empty struct in videomode.h ? */ 136 #endif 137 struct reservation_object; 138 struct dma_buf_attachment; 139 140 /* 141 * 4 debug categories are defined: 142 * 143 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ... 144 * This is the category used by the DRM_DEBUG() macro. 145 * 146 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ... 147 * This is the category used by the DRM_DEBUG_DRIVER() macro. 148 * 149 * KMS: used in the modesetting code. 150 * This is the category used by the DRM_DEBUG_KMS() macro. 151 * 152 * PRIME: used in the prime code. 153 * This is the category used by the DRM_DEBUG_PRIME() macro. 154 * 155 * ATOMIC: used in the atomic code. 156 * This is the category used by the DRM_DEBUG_ATOMIC() macro. 157 * 158 * 159 * PID: used as modifier to include PID number in messages. 160 * This is the category used by the all debug macros. 161 * 162 * FIOCTL: used in failed ioctl debugging. 163 * This is the category used by the DRM_DEBUG_FIOCTL() macro. 164 * 165 * IOCTL: used in ioctl debugging. 166 * This is the category used by the DRM_DEBUG_IOCTL() macro. 167 * 168 * VBLANK: used in vblank debugging. 169 * This is the category used by the DRM_DEBUG_VBLANK() macro. 170 * 171 * Enabling verbose debug messages is done through the drm.debug parameter, 172 * each category being enabled by a bit. 173 * 174 * drm.debug=0x1 will enable CORE messages 175 * drm.debug=0x2 will enable DRIVER messages 176 * drm.debug=0x3 will enable CORE and DRIVER messages 177 * ... 178 * drm.debug=0xf will enable all messages 179 * 180 * An interesting feature is that it's possible to enable verbose logging at 181 * run-time by using hw.drm.debug sysctl variable: 182 * # sysctl hw.drm.debug=0xfff 183 */ 184 #define DRM_UT_CORE 0x01 185 #define DRM_UT_DRIVER 0x02 186 #define DRM_UT_KMS 0x04 187 #define DRM_UT_PRIME 0x08 188 #define DRM_UT_ATOMIC 0x10 189 #define DRM_UT_VBL 0x20 190 /* Extra DragonFly debug categories */ 191 #ifdef __DragonFly__ 192 #define DRM_UT_RES7 0x40 /* reserved for future expansion */ 193 #define DRM_UT_RES8 0x80 /* reserved for future expansion */ 194 #define DRM_UT_PID 0x100 195 #define DRM_UT_FIOCTL 0x200 196 #define DRM_UT_IOCTL 0x400 197 #define DRM_UT_VBLANK 0x800 198 #endif 199 200 extern __printflike(2, 3) 201 void drm_ut_debug_printk(const char *function_name, 202 const char *format, ...); 203 extern __printflike(2, 3) 204 void drm_err(const char *func, const char *format, ...); 205 206 /***********************************************************************/ 207 /** \name DRM template customization defaults */ 208 /*@{*/ 209 210 /* driver capabilities and requirements mask */ 211 #define DRIVER_USE_AGP 0x1 212 #define DRIVER_PCI_DMA 0x8 213 #define DRIVER_SG 0x10 214 #define DRIVER_HAVE_DMA 0x20 215 #define DRIVER_HAVE_IRQ 0x40 216 #define DRIVER_IRQ_SHARED 0x80 217 #define DRIVER_GEM 0x1000 218 #define DRIVER_MODESET 0x2000 219 #define DRIVER_PRIME 0x4000 220 #define DRIVER_RENDER 0x8000 221 #define DRIVER_ATOMIC 0x10000 222 #define DRIVER_KMS_LEGACY_CONTEXT 0x20000 223 224 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */ 225 226 /***********************************************************************/ 227 /** \name Macros to make printk easier */ 228 /*@{*/ 229 230 /** 231 * Error output. 232 * 233 * \param fmt printf() like format string. 234 * \param arg arguments 235 */ 236 #define DRM_ERROR(fmt, ...) \ 237 drm_err(__func__, fmt, ##__VA_ARGS__) 238 239 /** 240 * Rate limited error output. Like DRM_ERROR() but won't flood the log. 241 * 242 * \param fmt printf() like format string. 243 * \param arg arguments 244 */ 245 #define DRM_ERROR_RATELIMITED(fmt, ...) \ 246 ({ \ 247 static struct krate krate_derr = { .freq = 1, .count = -16 }; \ 248 \ 249 krateprintf(&krate_derr, "error: [" DRM_NAME ":%s] *ERROR* " \ 250 fmt, __func__, ##__VA_ARGS__); \ 251 }) 252 253 #define DRM_INFO(fmt, ...) \ 254 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) 255 256 #define DRM_INFO_ONCE(fmt, ...) \ 257 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) 258 259 /** 260 * Debug output. 261 * 262 * \param fmt printf() like format string. 263 * \param arg arguments 264 */ 265 #define DRM_DEBUG(fmt, args...) \ 266 do { \ 267 if (unlikely(drm_debug & DRM_UT_CORE)) \ 268 drm_ut_debug_printk(__func__, fmt, ##args); \ 269 } while (0) 270 271 #define DRM_DEBUG_DRIVER(fmt, args...) \ 272 do { \ 273 if (unlikely(drm_debug & DRM_UT_DRIVER)) \ 274 drm_ut_debug_printk(__func__, fmt, ##args); \ 275 } while (0) 276 #define DRM_DEBUG_KMS(fmt, args...) \ 277 do { \ 278 if (unlikely(drm_debug & DRM_UT_KMS)) \ 279 drm_ut_debug_printk(__func__, fmt, ##args); \ 280 } while (0) 281 #define DRM_DEBUG_PRIME(fmt, args...) \ 282 do { \ 283 if (unlikely(drm_debug & DRM_UT_PRIME)) \ 284 drm_ut_debug_printk(__func__, fmt, ##args); \ 285 } while (0) 286 #define DRM_DEBUG_ATOMIC(fmt, args...) \ 287 do { \ 288 if (unlikely(drm_debug & DRM_UT_ATOMIC)) \ 289 drm_ut_debug_printk(__func__, fmt, ##args); \ 290 } while (0) 291 292 #ifdef __DragonFly__ 293 #define DRM_DEBUG_FIOCTL(fmt, args...) \ 294 do { \ 295 if (unlikely(drm_debug & DRM_UT_FIOCTL)) \ 296 drm_ut_debug_printk(__func__, fmt, ##args); \ 297 } while (0) 298 #define DRM_DEBUG_IOCTL(fmt, args...) \ 299 do { \ 300 if (unlikely(drm_debug & DRM_UT_IOCTL)) \ 301 drm_ut_debug_printk(__func__, fmt, ##args); \ 302 } while (0) 303 #define DRM_DEBUG_VBLANK(fmt, args...) \ 304 do { \ 305 if (unlikely(drm_debug & DRM_UT_VBLANK)) \ 306 drm_ut_debug_printk(__func__, fmt, ##args); \ 307 } while (0) 308 #define DRM_DEBUG_VBL(fmt, args...) \ 309 do { \ 310 if (unlikely(drm_debug & DRM_UT_VBL)) \ 311 drm_ut_debug_printk(__func__, fmt, ##args); \ 312 } while (0) 313 #endif 314 315 /*@}*/ 316 317 /***********************************************************************/ 318 /** \name Internal types and structures */ 319 /*@{*/ 320 321 SYSCTL_DECL(_hw_drm); 322 323 #define DRM_MAX(a,b) ((a)>(b)?(a):(b)) 324 325 #define DRM_IF_VERSION(maj, min) (maj << 16 | min) 326 327 #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) 328 #define DRM_DEV_UID UID_ROOT 329 #define DRM_DEV_GID GID_WHEEL 330 331 #define DRM_CURPROC curthread 332 #define DRM_STRUCTPROC struct thread 333 #define DRM_LOCK(dev) lockmgr(&(dev)->struct_mutex, LK_EXCLUSIVE) 334 #define DRM_UNLOCK(dev) lockmgr(&(dev)->struct_mutex, LK_RELEASE) 335 #define DRM_LOCK_SLEEP(dev, chan, flags, msg, timeout) \ 336 (lksleep((chan), &(dev)->struct_mutex, (flags), (msg), (timeout))) 337 #if defined(INVARIANTS) 338 #define DRM_LOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) != 0); 339 #define DRM_UNLOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) == 0); 340 #else 341 #define DRM_LOCK_ASSERT(d) 342 #define DRM_UNLOCK_ASSERT(d) 343 #endif 344 345 #define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS) 346 347 typedef void irqreturn_t; 348 #define IRQ_HANDLED /* nothing */ 349 #define IRQ_NONE /* nothing */ 350 351 #define drm_get_device_from_kdev(_kdev) (_kdev->si_drv1) 352 353 #define DRM_MTRR_WC MDF_WRITECOMBINE 354 355 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end, 356 vm_memattr_t memattr); 357 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end); 358 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa); 359 360 /* drm_memory.c */ 361 int drm_mtrr_add(unsigned long offset, size_t size, int flags); 362 int drm_mtrr_del(int handle, unsigned long offset, size_t size, int flags); 363 364 typedef struct drm_pci_id_list 365 { 366 int vendor; 367 int device; 368 long driver_private; 369 char *name; 370 } drm_pci_id_list_t; 371 372 /** 373 * Ioctl function type. 374 * 375 * \param inode device inode. 376 * \param file_priv DRM file private pointer. 377 * \param cmd command. 378 * \param arg argument. 379 */ 380 typedef int drm_ioctl_t(struct drm_device *dev, void *data, 381 struct drm_file *file_priv); 382 383 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, 384 unsigned long arg); 385 386 #define DRM_IOCTL_NR(n) ((n) & 0xff) 387 388 #define DRM_AUTH 0x1 389 #define DRM_MASTER 0x2 390 #define DRM_ROOT_ONLY 0x4 391 #define DRM_CONTROL_ALLOW 0x8 392 #define DRM_UNLOCKED 0x10 393 #define DRM_RENDER_ALLOW 0x20 394 395 struct drm_ioctl_desc { 396 unsigned int cmd; 397 int flags; 398 drm_ioctl_t *func; 399 unsigned int cmd_drv; 400 const char *name; 401 }; 402 403 /** 404 * Creates a driver or general drm_ioctl_desc array entry for the given 405 * ioctl, for use by drm_ioctl(). 406 */ 407 408 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ 409 [DRM_IOCTL_NR(DRM_##ioctl)] = { \ 410 .cmd = DRM_##ioctl, \ 411 .func = _func, \ 412 .flags = _flags, \ 413 .cmd_drv = DRM_IOCTL_##ioctl, \ 414 .name = #ioctl \ 415 } 416 417 typedef struct drm_magic_entry { 418 struct list_head head; 419 struct drm_hash_item hash_item; 420 struct drm_file *priv; 421 struct drm_magic_entry *next; 422 } drm_magic_entry_t; 423 424 /* Event queued up for userspace to read */ 425 struct drm_pending_event { 426 struct drm_event *event; 427 struct list_head link; 428 struct drm_file *file_priv; 429 pid_t pid; /* pid of requester, no guarantee it's valid by the time 430 we deliver the event, for tracing only */ 431 void (*destroy)(struct drm_pending_event *event); 432 }; 433 434 /* initial implementaton using a linked list - todo hashtab */ 435 struct drm_prime_file_private { 436 struct list_head head; 437 #ifdef DUMBBELL_WIP 438 struct mutex lock; 439 #endif /* DUMBBELL_WIP */ 440 }; 441 442 /** File private data */ 443 struct drm_file { 444 int authenticated; 445 struct drm_device *dev; 446 int master; 447 448 /* true when the client has asked us to expose stereo 3D mode flags */ 449 bool stereo_allowed; 450 /* 451 * true if client understands CRTC primary planes and cursor planes 452 * in the plane list 453 */ 454 unsigned universal_planes:1; 455 /* true if client understands atomic properties */ 456 unsigned atomic:1; 457 458 pid_t pid; 459 uid_t uid; 460 drm_magic_t magic; 461 unsigned long ioctl_count; 462 struct list_head lhead; 463 struct kqinfo dkq; 464 465 /** Mapping of mm object handles to object pointers. */ 466 struct idr object_idr; 467 /** Lock for synchronization of access to object_idr. */ 468 struct lock table_lock; 469 470 void *driver_priv; 471 472 int is_master; 473 struct drm_master *masterp; 474 475 /** 476 * fbs - List of framebuffers associated with this file. 477 * 478 * Protected by fbs_lock. Note that the fbs list holds a reference on 479 * the fb object to prevent it from untimely disappearing. 480 */ 481 struct list_head fbs; 482 struct lock fbs_lock; 483 484 /** User-created blob properties; this retains a reference on the 485 * property. */ 486 struct list_head blobs; 487 488 wait_queue_head_t event_wait; 489 struct list_head event_list; 490 int event_space; 491 492 struct drm_prime_file_private prime; 493 }; 494 495 /** 496 * Lock data. 497 */ 498 struct drm_lock_data { 499 struct drm_hw_lock *hw_lock; /**< Hardware lock */ 500 /** Private of lock holder's file (NULL=kernel) */ 501 struct drm_file *file_priv; 502 wait_queue_head_t lock_queue; /**< Queue of blocked processes */ 503 unsigned long lock_time; /**< Time of last lock in jiffies */ 504 }; 505 506 /** 507 * GEM specific mm private for tracking GEM objects 508 */ 509 struct drm_gem_mm { 510 struct drm_vma_offset_manager vma_manager; 511 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */ 512 struct drm_open_hash offset_hash; /**< User token hash table for maps */ 513 struct unrhdr *idxunr; 514 }; 515 516 /** 517 * struct drm_master - drm master structure 518 * 519 * @refcount: Refcount for this master object. 520 * @minor: Link back to minor char device we are master for. Immutable. 521 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex. 522 * @unique_len: Length of unique field. Protected by drm_global_mutex. 523 * @unique_size: Amount allocated. Protected by drm_global_mutex. 524 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex. 525 * @magicfree: List of used authentication tokens. Protected by struct_mutex. 526 * @lock: DRI lock information. 527 * @driver_priv: Pointer to driver-private information. 528 */ 529 struct drm_master { 530 struct kref refcount; /* refcount for this master */ 531 struct list_head head; /**< each minor contains a list of masters */ 532 struct drm_minor *minor; /**< link back to minor we are a master for */ 533 char *unique; /**< Unique identifier: e.g., busid */ 534 int unique_len; /**< Length of unique field */ 535 int unique_size; /**< amount allocated */ 536 int blocked; /**< Blocked due to VC switch? */ 537 struct drm_open_hash magiclist; 538 struct list_head magicfree; 539 struct drm_lock_data lock; 540 void *driver_priv; 541 }; 542 543 /* Size of ringbuffer for vblank timestamps. Just double-buffer 544 * in initial implementation. 545 */ 546 #define DRM_VBLANKTIME_RBSIZE 2 547 548 /* Flags and return codes for get_vblank_timestamp() driver function. */ 549 #define DRM_CALLED_FROM_VBLIRQ 1 550 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) 551 #define DRM_VBLANKTIME_IN_VBLANK (1 << 1) 552 553 /* get_scanout_position() return flags */ 554 #define DRM_SCANOUTPOS_VALID (1 << 0) 555 #define DRM_SCANOUTPOS_IN_VBLANK (1 << 1) 556 #define DRM_SCANOUTPOS_ACCURATE (1 << 2) 557 558 /** 559 * DRM driver structure. This structure represent the common code for 560 * a family of cards. There will one drm_device for each card present 561 * in this family 562 */ 563 struct drm_driver { 564 int (*load) (struct drm_device *, unsigned long flags); 565 int (*use_msi) (struct drm_device *, unsigned long flags); 566 int (*firstopen) (struct drm_device *); 567 int (*open) (struct drm_device *, struct drm_file *); 568 void (*preclose) (struct drm_device *, struct drm_file *file_priv); 569 void (*postclose) (struct drm_device *, struct drm_file *); 570 void (*lastclose) (struct drm_device *); 571 int (*unload) (struct drm_device *); 572 void (*reclaim_buffers_locked) (struct drm_device *, 573 struct drm_file *file_priv); 574 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv); 575 int (*dma_quiescent) (struct drm_device *); 576 int (*context_ctor) (struct drm_device *dev, int context); 577 int (*context_dtor) (struct drm_device *dev, int context); 578 579 /** 580 * get_vblank_counter - get raw hardware vblank counter 581 * @dev: DRM device 582 * @pipe: counter to fetch 583 * 584 * Driver callback for fetching a raw hardware vblank counter for @crtc. 585 * If a device doesn't have a hardware counter, the driver can simply 586 * return the value of drm_vblank_count. The DRM core will account for 587 * missed vblank events while interrupts where disabled based on system 588 * timestamps. 589 * 590 * Wraparound handling and loss of events due to modesetting is dealt 591 * with in the DRM core code. 592 * 593 * RETURNS 594 * Raw vblank counter value. 595 */ 596 u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe); 597 598 /** 599 * enable_vblank - enable vblank interrupt events 600 * @dev: DRM device 601 * @pipe: which irq to enable 602 * 603 * Enable vblank interrupts for @crtc. If the device doesn't have 604 * a hardware vblank counter, this routine should be a no-op, since 605 * interrupts will have to stay on to keep the count accurate. 606 * 607 * RETURNS 608 * Zero on success, appropriate errno if the given @crtc's vblank 609 * interrupt cannot be enabled. 610 */ 611 int (*enable_vblank) (struct drm_device *dev, unsigned int pipe); 612 613 /** 614 * disable_vblank - disable vblank interrupt events 615 * @dev: DRM device 616 * @pipe: which irq to enable 617 * 618 * Disable vblank interrupts for @crtc. If the device doesn't have 619 * a hardware vblank counter, this routine should be a no-op, since 620 * interrupts will have to stay on to keep the count accurate. 621 */ 622 void (*disable_vblank) (struct drm_device *dev, unsigned int pipe); 623 624 /** 625 * Called by \c drm_device_is_agp. Typically used to determine if a 626 * card is really attached to AGP or not. 627 * 628 * \param dev DRM device handle 629 * 630 * \returns 631 * One of three values is returned depending on whether or not the 632 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP 633 * (return of 1), or may or may not be AGP (return of 2). 634 */ 635 int (*device_is_agp) (struct drm_device *dev); 636 637 /** 638 * Called by vblank timestamping code. 639 * 640 * Return the current display scanout position from a crtc, and an 641 * optional accurate ktime_get timestamp of when position was measured. 642 * 643 * \param dev DRM device. 644 * \param pipe Id of the crtc to query. 645 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0). 646 * \param *vpos Target location for current vertical scanout position. 647 * \param *hpos Target location for current horizontal scanout position. 648 * \param *stime Target location for timestamp taken immediately before 649 * scanout position query. Can be NULL to skip timestamp. 650 * \param *etime Target location for timestamp taken immediately after 651 * scanout position query. Can be NULL to skip timestamp. 652 * 653 * Returns vpos as a positive number while in active scanout area. 654 * Returns vpos as a negative number inside vblank, counting the number 655 * of scanlines to go until end of vblank, e.g., -1 means "one scanline 656 * until start of active scanout / end of vblank." 657 * 658 * \return Flags, or'ed together as follows: 659 * 660 * DRM_SCANOUTPOS_VALID = Query successful. 661 * DRM_SCANOUTPOS_INVBL = Inside vblank. 662 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of 663 * this flag means that returned position may be offset by a constant 664 * but unknown small number of scanlines wrt. real scanout position. 665 * 666 */ 667 int (*get_scanout_position) (struct drm_device *dev, unsigned int pipe, 668 unsigned int flags, int *vpos, int *hpos, 669 ktime_t *stime, ktime_t *etime, 670 const struct drm_display_mode *mode); 671 672 /** 673 * Called by \c drm_get_last_vbltimestamp. Should return a precise 674 * timestamp when the most recent VBLANK interval ended or will end. 675 * 676 * Specifically, the timestamp in @vblank_time should correspond as 677 * closely as possible to the time when the first video scanline of 678 * the video frame after the end of VBLANK will start scanning out, 679 * the time immediately after end of the VBLANK interval. If the 680 * @crtc is currently inside VBLANK, this will be a time in the future. 681 * If the @crtc is currently scanning out a frame, this will be the 682 * past start time of the current scanout. This is meant to adhere 683 * to the OpenML OML_sync_control extension specification. 684 * 685 * \param dev dev DRM device handle. 686 * \param pipe crtc for which timestamp should be returned. 687 * \param *max_error Maximum allowable timestamp error in nanoseconds. 688 * Implementation should strive to provide timestamp 689 * with an error of at most *max_error nanoseconds. 690 * Returns true upper bound on error for timestamp. 691 * \param *vblank_time Target location for returned vblank timestamp. 692 * \param flags 0 = Defaults, no special treatment needed. 693 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank 694 * irq handler. Some drivers need to apply some workarounds 695 * for gpu-specific vblank irq quirks if flag is set. 696 * 697 * \returns 698 * Zero if timestamping isn't supported in current display mode or a 699 * negative number on failure. A positive status code on success, 700 * which describes how the vblank_time timestamp was computed. 701 */ 702 int (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe, 703 int *max_error, 704 struct timeval *vblank_time, 705 unsigned flags); 706 707 /* these have to be filled in */ 708 709 void (*irq_handler) (void *arg); 710 void (*irq_preinstall) (struct drm_device *dev); 711 int (*irq_postinstall) (struct drm_device *dev); 712 void (*irq_uninstall) (struct drm_device *dev); 713 714 /** 715 * Driver-specific constructor for drm_gem_objects, to set up 716 * obj->driver_private. 717 * 718 * Returns 0 on success. 719 */ 720 void (*gem_free_object) (struct drm_gem_object *obj); 721 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); 722 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); 723 724 int (*sysctl_init) (struct drm_device *dev, 725 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 726 void (*sysctl_cleanup) (struct drm_device *dev); 727 728 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 729 730 /* dumb alloc support */ 731 int (*dumb_create)(struct drm_file *file_priv, 732 struct drm_device *dev, 733 struct drm_mode_create_dumb *args); 734 int (*dumb_map_offset)(struct drm_file *file_priv, 735 struct drm_device *dev, uint32_t handle, 736 uint64_t *offset); 737 int (*dumb_destroy)(struct drm_file *file_priv, 738 struct drm_device *dev, 739 uint32_t handle); 740 741 /* Driver private ops for this object */ 742 struct cdev_pager_ops *gem_pager_ops; 743 744 int major; 745 int minor; 746 int patchlevel; 747 const char *name; /* Simple driver name */ 748 const char *desc; /* Longer driver name */ 749 const char *date; /* Date of last major changes. */ 750 751 u32 driver_features; 752 int dev_priv_size; 753 const struct drm_ioctl_desc *ioctls; 754 int num_ioctls; 755 }; 756 757 /** 758 * Info file list entry. This structure represents a debugfs or proc file to 759 * be created by the drm core 760 */ 761 struct drm_info_list { 762 const char *name; /** file name */ 763 int (*show)(struct seq_file*, void*); /** show callback */ 764 u32 driver_features; /**< Required driver features for this entry */ 765 void *data; 766 }; 767 768 /** 769 * debugfs node structure. This structure represents a debugfs file. 770 */ 771 struct drm_info_node { 772 struct list_head list; 773 struct drm_minor *minor; 774 const struct drm_info_list *info_ent; 775 struct dentry *dent; 776 }; 777 778 /** 779 * DRM minor structure. This structure represents a drm minor number. 780 */ 781 struct drm_minor { 782 int index; /**< Minor device number */ 783 int type; /**< Control or render */ 784 device_t kdev; /**< OS device */ 785 struct drm_device *dev; 786 787 /* currently active master for this node. Protected by master_mutex */ 788 struct drm_master *master; 789 }; 790 791 struct drm_pending_vblank_event { 792 struct drm_pending_event base; 793 unsigned int pipe; 794 struct drm_event_vblank event; 795 }; 796 797 struct drm_vblank_crtc { 798 struct drm_device *dev; /* pointer to the drm_device */ 799 wait_queue_head_t queue; /**< VBLANK wait queue */ 800 struct timer_list disable_timer; /* delayed disable timer */ 801 802 /* vblank counter, protected by dev->vblank_time_lock for writes */ 803 u32 count; 804 /* vblank timestamps, protected by dev->vblank_time_lock for writes */ 805 struct timeval time[DRM_VBLANKTIME_RBSIZE]; 806 807 atomic_t refcount; /* number of users of vblank interruptsper crtc */ 808 u32 last; /* protected by dev->vbl_lock, used */ 809 /* for wraparound handling */ 810 u32 last_wait; /* Last vblank seqno waited per CRTC */ 811 unsigned int inmodeset; /* Display driver is setting mode */ 812 unsigned int pipe; /* crtc index */ 813 int framedur_ns; /* frame/field duration in ns */ 814 int linedur_ns; /* line duration in ns */ 815 int pixeldur_ns; /* pixel duration in ns */ 816 bool enabled; /* so we don't call enable more than 817 once per disable */ 818 }; 819 820 struct drm_sysctl_info { 821 struct sysctl_ctx_list ctx; 822 char name[2]; 823 }; 824 825 /* Length for the array of resource pointers for drm_get_resource_*. */ 826 #define DRM_MAX_PCI_RESOURCE 6 827 828 /** 829 * DRM device structure. This structure represent a complete card that 830 * may contain multiple heads. 831 */ 832 struct drm_device { 833 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 834 835 char *unique; /* Unique identifier: e.g., busid */ 836 int unique_len; /* Length of unique field */ 837 struct cdev *devnode; /* Device number for mknod */ 838 int if_version; /* Highest interface version set */ 839 840 int flags; /* Flags to open(2) */ 841 842 /* Locks */ 843 struct spinlock dma_lock; /* protects dev->dma */ 844 struct lwkt_serialize irq_lock; /* protects irq condition checks */ 845 struct lock dev_lock; /* protects everything else */ 846 847 /** \name Locks */ 848 /*@{ */ 849 struct lock struct_mutex; /**< For others */ 850 struct lock master_mutex; /**< For drm_minor::master */ 851 /*@} */ 852 853 /** \name Usage Counters */ 854 /*@{ */ 855 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ 856 struct spinlock buf_lock; /**< For drm_device::buf_use and a few other things. */ 857 int buf_use; /**< Buffers in use -- cannot alloc */ 858 atomic_t buf_alloc; /**< Buffer allocation in progress */ 859 /*@} */ 860 861 862 /** \name Performance counters */ 863 /*@{ */ 864 unsigned long counters; 865 enum drm_stat_type types[15]; 866 atomic_t counts[15]; 867 /*@} */ 868 869 /* Authentication */ 870 struct drm_open_hash magiclist; /**< magic hash table */ 871 struct list_head magicfree; 872 873 struct list_head filelist; 874 875 /** \name Memory management */ 876 /*@{ */ 877 struct list_head maplist; /**< Linked list of regions */ 878 int map_count; /**< Number of mappable regions */ 879 struct drm_open_hash map_hash; /**< User token hash table for maps */ 880 881 /** \name Context handle management */ 882 /*@{ */ 883 struct list_head ctxlist; /**< Linked list of context handles */ 884 int ctx_count; /**< Number of context handles */ 885 struct lock ctxlist_mutex; /**< For ctxlist */ 886 887 struct idr ctx_idr; 888 889 /*@} */ 890 891 struct drm_lock_data lock; /* Information on hardware lock */ 892 893 /** \name DMA support */ 894 /*@{ */ 895 struct drm_device_dma *dma; /**< Optional pointer for DMA support */ 896 /*@} */ 897 898 int irq_type; /* IRQ type (MSI enabled or not) */ 899 int irqrid; /* Interrupt used by board */ 900 struct resource *irqr; /* Resource for interrupt used by board */ 901 void *irqh; /* Handle from bus_setup_intr */ 902 903 /* Storage of resource pointers for drm_get_resource_* */ 904 struct resource *pcir[DRM_MAX_PCI_RESOURCE]; 905 int pcirid[DRM_MAX_PCI_RESOURCE]; 906 907 int pci_domain; 908 int pci_bus; 909 int pci_slot; 910 int pci_func; 911 912 /** \name Context support */ 913 /*@{ */ 914 915 __volatile__ long context_flag; /**< Context swapping flag */ 916 __volatile__ long interrupt_flag; /**< Interruption handler flag */ 917 __volatile__ long dma_flag; /**< DMA dispatch flag */ 918 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */ 919 int last_checked; /**< Last context checked for DMA */ 920 int last_context; /**< Last current context */ 921 unsigned long last_switch; /**< jiffies at last context switch */ 922 /*@} */ 923 924 /** \name VBLANK IRQ support */ 925 /*@{ */ 926 int irq_enabled; /**< True if irq handler is enabled */ 927 int irq; /* Interrupt used by board */ 928 929 /* 930 * At load time, disabling the vblank interrupt won't be allowed since 931 * old clients may not call the modeset ioctl and therefore misbehave. 932 * Once the modeset ioctl *has* been called though, we can safely 933 * disable them when unused. 934 */ 935 bool vblank_disable_allowed; 936 937 /* 938 * If true, vblank interrupt will be disabled immediately when the 939 * refcount drops to zero, as opposed to via the vblank disable 940 * timer. 941 * This can be set to true it the hardware has a working vblank 942 * counter and the driver uses drm_vblank_on() and drm_vblank_off() 943 * appropriately. 944 */ 945 bool vblank_disable_immediate; 946 947 /* array of size num_crtcs */ 948 struct drm_vblank_crtc *vblank; 949 950 struct lock vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ 951 struct lock vbl_lock; 952 struct timer_list vblank_disable_timer; 953 954 u32 max_vblank_count; /**< size of vblank counter register */ 955 956 /** 957 * List of events 958 */ 959 struct list_head vblank_event_list; 960 struct lock event_lock; 961 962 /*@} */ 963 964 struct sigio *buf_sigio; /* Processes waiting for SIGIO */ 965 966 /* Sysctl support */ 967 struct drm_sysctl_info *sysctl; 968 969 970 struct drm_sg_mem *sg; /**< Scatter gather memory */ 971 unsigned int num_crtcs; /**< Number of CRTCs on this device */ 972 973 unsigned long *ctx_bitmap; 974 void *dev_private; 975 976 void *drm_ttm_bdev; 977 978 /*@} */ 979 980 struct drm_agp_head *agp; /**< AGP data */ 981 982 struct device *dev; /**< Device structure */ 983 struct pci_dev *pdev; /**< PCI device structure */ 984 985 struct drm_driver *driver; 986 struct drm_local_map *agp_buffer_map; 987 unsigned int agp_buffer_token; 988 struct drm_minor *control; /**< Control node for card */ 989 struct drm_minor *primary; /**< render type primary screen head */ 990 991 struct drm_mode_config mode_config; /**< Current mode config */ 992 993 /** \name GEM information */ 994 /*@{ */ 995 struct lock object_name_lock; 996 struct idr object_name_idr; 997 /*@} */ 998 void *mm_private; 999 1000 void *sysctl_private; 1001 char busid_str[128]; 1002 int modesetting; 1003 1004 int switch_power_state; 1005 1006 atomic_t unplugged; /* device has been unplugged or gone away */ 1007 }; 1008 1009 #define DRM_SWITCH_POWER_ON 0 1010 #define DRM_SWITCH_POWER_OFF 1 1011 #define DRM_SWITCH_POWER_CHANGING 2 1012 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3 1013 1014 static __inline__ int drm_core_check_feature(struct drm_device *dev, 1015 int feature) 1016 { 1017 return ((dev->driver->driver_features & feature) ? 1 : 0); 1018 } 1019 1020 static inline void drm_device_set_unplugged(struct drm_device *dev) 1021 { 1022 smp_wmb(); 1023 atomic_set(&dev->unplugged, 1); 1024 } 1025 1026 static inline int drm_device_is_unplugged(struct drm_device *dev) 1027 { 1028 int ret = atomic_read(&dev->unplugged); 1029 smp_rmb(); 1030 return ret; 1031 } 1032 1033 static inline bool drm_is_primary_client(const struct drm_file *file_priv) 1034 { 1035 return 0 /* file_priv->minor->type == DRM_MINOR_LEGACY */; 1036 } 1037 1038 /** 1039 * drm_is_master() - Check whether a DRM open-file is DRM-Master 1040 * @file: DRM open-file context 1041 * 1042 * This checks whether a DRM open-file context is owner of the master context 1043 * attached to it. If a file owns a master context, it's called DRM-Master. 1044 * Per DRM device, only one such file can be DRM-Master at a time. 1045 * 1046 * Returns: True if the file is DRM-Master, otherwise false. 1047 */ 1048 static inline bool drm_is_master(const struct drm_file *file) 1049 { 1050 #if 0 1051 return file->master && file->master == file->minor->master; 1052 #else 1053 return true; 1054 #endif 1055 } 1056 1057 /******************************************************************/ 1058 /** \name Internal function definitions */ 1059 /*@{*/ 1060 1061 /* Driver support (drm_drv.h) */ 1062 extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv); 1063 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist); 1064 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist); 1065 int drm_create_cdevs(device_t kdev); 1066 d_ioctl_t drm_ioctl; 1067 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); 1068 1069 /* Device support (drm_fops.h) */ 1070 d_open_t drm_open; 1071 d_close_t drm_close; 1072 d_read_t drm_read; 1073 d_kqfilter_t drm_kqfilter; 1074 int drm_release(device_t kdev); 1075 1076 d_mmap_t drm_mmap; 1077 d_mmap_single_t drm_mmap_single; 1078 1079 void drm_cdevpriv_dtor(void *cd); 1080 1081 int drm_add_busid_modesetting(struct drm_device *dev, 1082 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 1083 1084 /* File operations helpers (drm_fops.c) */ 1085 extern int drm_open_helper(struct cdev *kdev, int flags, int fmt, 1086 DRM_STRUCTPROC *p, 1087 struct drm_device *dev, 1088 struct file *fp); 1089 1090 /* Misc. IOCTL support (drm_ioctl.c) */ 1091 int drm_noop(struct drm_device *dev, void *data, 1092 struct drm_file *file_priv); 1093 int drm_invalid_op(struct drm_device *dev, void *data, 1094 struct drm_file *file_priv); 1095 1096 /* Cache management (drm_cache.c) */ 1097 void drm_clflush_pages(struct vm_page *pages[], unsigned long num_pages); 1098 void drm_clflush_sg(struct sg_table *st); 1099 void drm_clflush_virt_range(void *addr, unsigned long length); 1100 1101 /* 1102 * These are exported to drivers so that they can implement fencing using 1103 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1104 */ 1105 1106 unsigned long drm_get_resource_start(struct drm_device *dev, 1107 unsigned int resource); 1108 unsigned long drm_get_resource_len(struct drm_device *dev, 1109 unsigned int resource); 1110 1111 /* IRQ support (drm_irq.h) */ 1112 extern int drm_irq_install(struct drm_device *dev, int irq); 1113 extern int drm_irq_uninstall(struct drm_device *dev); 1114 1115 extern int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs); 1116 extern int drm_wait_vblank(struct drm_device *dev, void *data, 1117 struct drm_file *filp); 1118 extern u32 drm_vblank_count(struct drm_device *dev, unsigned int pipe); 1119 extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc); 1120 extern u32 drm_vblank_count_and_time(struct drm_device *dev, unsigned int pipe, 1121 struct timeval *vblanktime); 1122 extern u32 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc, 1123 struct timeval *vblanktime); 1124 extern void drm_send_vblank_event(struct drm_device *dev, unsigned int pipe, 1125 struct drm_pending_vblank_event *e); 1126 extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc, 1127 struct drm_pending_vblank_event *e); 1128 extern void drm_arm_vblank_event(struct drm_device *dev, unsigned int pipe, 1129 struct drm_pending_vblank_event *e); 1130 extern void drm_crtc_arm_vblank_event(struct drm_crtc *crtc, 1131 struct drm_pending_vblank_event *e); 1132 extern bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe); 1133 extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc); 1134 extern int drm_vblank_get(struct drm_device *dev, unsigned int pipe); 1135 extern void drm_vblank_put(struct drm_device *dev, unsigned int pipe); 1136 extern int drm_crtc_vblank_get(struct drm_crtc *crtc); 1137 extern void drm_crtc_vblank_put(struct drm_crtc *crtc); 1138 extern void drm_wait_one_vblank(struct drm_device *dev, unsigned int pipe); 1139 extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc); 1140 extern void drm_vblank_off(struct drm_device *dev, unsigned int pipe); 1141 extern void drm_vblank_on(struct drm_device *dev, unsigned int pipe); 1142 extern void drm_crtc_vblank_off(struct drm_crtc *crtc); 1143 extern void drm_crtc_vblank_reset(struct drm_crtc *crtc); 1144 extern void drm_crtc_vblank_on(struct drm_crtc *crtc); 1145 extern void drm_vblank_cleanup(struct drm_device *dev); 1146 extern u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe); 1147 1148 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, 1149 unsigned int pipe, int *max_error, 1150 struct timeval *vblank_time, 1151 unsigned flags, 1152 const struct drm_display_mode *mode); 1153 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc, 1154 const struct drm_display_mode *mode); 1155 1156 /** 1157 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC 1158 * @crtc: which CRTC's vblank waitqueue to retrieve 1159 * 1160 * This function returns a pointer to the vblank waitqueue for the CRTC. 1161 * Drivers can use this to implement vblank waits using wait_event() & co. 1162 */ 1163 static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc) 1164 { 1165 return &crtc->dev->vblank[drm_crtc_index(crtc)].queue; 1166 } 1167 1168 /* Modesetting support */ 1169 extern void drm_vblank_pre_modeset(struct drm_device *dev, unsigned int pipe); 1170 extern void drm_vblank_post_modeset(struct drm_device *dev, unsigned int pipe); 1171 1172 /* Stub support (drm_stub.h) */ 1173 1174 extern void drm_put_dev(struct drm_device *dev); 1175 extern void drm_unplug_dev(struct drm_device *dev); 1176 extern unsigned int drm_debug; 1177 extern bool drm_atomic; 1178 1179 /* consistent PCI memory functions (drm_pci.c) */ 1180 extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size, 1181 size_t align); 1182 extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah); 1183 1184 /* sysfs support (drm_sysfs.c) */ 1185 extern void drm_sysfs_hotplug_event(struct drm_device *dev); 1186 1187 /* sysctl support (drm_sysctl.h) */ 1188 extern int drm_sysctl_init(struct drm_device *dev); 1189 extern int drm_sysctl_cleanup(struct drm_device *dev); 1190 1191 /* XXX: These are here only because of drm_sysctl.c */ 1192 extern int drm_vblank_offdelay; 1193 extern unsigned int drm_timestamp_precision; 1194 1195 int drm_gem_mmap_single(struct drm_device *dev, vm_ooffset_t *offset, 1196 vm_size_t size, struct vm_object **obj_res, int nprot); 1197 1198 struct ttm_bo_device; 1199 int ttm_bo_mmap_single(struct ttm_bo_device *bdev, vm_ooffset_t *offset, 1200 vm_size_t size, struct vm_object **obj_res, int nprot); 1201 struct ttm_buffer_object; 1202 void ttm_bo_release_mmap(struct ttm_buffer_object *bo); 1203 1204 /* simplified version of kvasnrprintf() for drm needs. */ 1205 char *drm_vasprintf(int flags, const char *format, __va_list ap) __printflike(2, 0); 1206 char *drm_asprintf(int flags, const char *format, ...) __printflike(2, 3); 1207 1208 /* XXX glue logic, should be done in drm_pci_init(), pending drm update */ 1209 void drm_init_pdev(struct device *dev, struct pci_dev **pdev); 1210 void drm_fini_pdev(struct pci_dev **pdev); 1211 void drm_print_pdev(struct pci_dev *pdev); 1212 1213 /* Inline drm_free() helper for area kfree() */ 1214 static __inline__ void 1215 drm_free(void *pt, struct malloc_type *area) 1216 { 1217 /* kfree is special!!! */ 1218 if (pt != NULL) 1219 (kfree)(pt, area); 1220 } 1221 1222 struct drm_device *drm_dev_alloc(struct drm_driver *driver, 1223 struct device *parent); 1224 void drm_dev_ref(struct drm_device *dev); 1225 void drm_dev_unref(struct drm_device *dev); 1226 int drm_dev_register(struct drm_device *dev, unsigned long flags); 1227 void drm_dev_unregister(struct drm_device *dev); 1228 int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...); 1229 1230 1231 /* PCI section */ 1232 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev) 1233 { 1234 if (dev->driver->device_is_agp != NULL) { 1235 int err = (*dev->driver->device_is_agp) (dev); 1236 1237 if (err != 2) { 1238 return err; 1239 } 1240 } 1241 1242 return (pci_find_extcap(dev->dev, PCIY_AGP, NULL) == 0); 1243 } 1244 1245 #define DRM_PCIE_SPEED_25 1 1246 #define DRM_PCIE_SPEED_50 2 1247 #define DRM_PCIE_SPEED_80 4 1248 1249 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); 1250 1251 /* XXX bad */ 1252 #define drm_can_sleep() (HZ & 1) 1253 1254 #endif /* __KERNEL__ */ 1255 #endif /* _DRM_P_H_ */ 1256