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/pci.h> 101 #include <linux/slab.h> 102 #include <linux/scatterlist.h> 103 #include <linux/timer.h> 104 #include <asm/io.h> 105 #include <linux/seq_file.h> 106 #include <linux/types.h> 107 #include <linux/vmalloc.h> 108 #include <linux/wait.h> 109 #include <linux/workqueue.h> 110 111 #include <asm/uaccess.h> 112 113 #include <uapi_drm/drm.h> 114 #include <uapi_drm/drm_mode.h> 115 116 #include <drm/drm_agpsupport.h> 117 #include <drm/drm_crtc.h> 118 #include <drm/drm_global.h> 119 #include <drm/drm_hashtab.h> 120 #include <drm/drm_mem_util.h> 121 #include <drm/drm_mm.h> 122 #include <drm/drm_os_linux.h> 123 #include <uapi_drm/drm_sarea.h> 124 #include <drm/drm_vma_manager.h> 125 126 struct drm_file; 127 struct drm_device; 128 struct drm_agp_head; 129 struct drm_local_map; 130 struct drm_device_dma; 131 struct drm_dma_handle; 132 struct drm_gem_object; 133 134 struct device_node; 135 #ifdef CONFIG_VIDEOMODE_HELPERS 136 struct videomode; /* XXX empty struct in videomode.h ? */ 137 #endif 138 struct reservation_object; 139 struct dma_buf_attachment; 140 141 /* 142 * 4 debug categories are defined: 143 * 144 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ... 145 * This is the category used by the DRM_DEBUG() macro. 146 * 147 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ... 148 * This is the category used by the DRM_DEBUG_DRIVER() macro. 149 * 150 * KMS: used in the modesetting code. 151 * This is the category used by the DRM_DEBUG_KMS() macro. 152 * 153 * PRIME: used in the prime code. 154 * This is the category used by the DRM_DEBUG_PRIME() macro. 155 * 156 * ATOMIC: used in the atomic code. 157 * This is the category used by the DRM_DEBUG_ATOMIC() macro. 158 * 159 * 160 * PID: used as modifier to include PID number in messages. 161 * This is the category used by the all debug macros. 162 * 163 * FIOCTL: used in failed ioctl debugging. 164 * This is the category used by the DRM_DEBUG_FIOCTL() macro. 165 * 166 * IOCTL: used in ioctl debugging. 167 * This is the category used by the DRM_DEBUG_IOCTL() macro. 168 * 169 * VBLANK: used in vblank debugging. 170 * This is the category used by the DRM_DEBUG_VBLANK() macro. 171 * 172 * Enabling verbose debug messages is done through the drm.debug parameter, 173 * each category being enabled by a bit. 174 * 175 * drm.debug=0x1 will enable CORE messages 176 * drm.debug=0x2 will enable DRIVER messages 177 * drm.debug=0x3 will enable CORE and DRIVER messages 178 * ... 179 * drm.debug=0xf will enable all messages 180 * 181 * An interesting feature is that it's possible to enable verbose logging at 182 * run-time by using hw.drm.debug sysctl variable: 183 * # sysctl hw.drm.debug=0xfff 184 */ 185 #define DRM_UT_CORE 0x01 186 #define DRM_UT_DRIVER 0x02 187 #define DRM_UT_KMS 0x04 188 #define DRM_UT_PRIME 0x08 189 #define DRM_UT_ATOMIC 0x10 190 #define DRM_UT_VBL 0x20 191 /* Extra DragonFly debug categories */ 192 #ifdef __DragonFly__ 193 #define DRM_UT_RES7 0x40 /* reserved for future expansion */ 194 #define DRM_UT_RES8 0x80 /* reserved for future expansion */ 195 #define DRM_UT_PID 0x100 196 #define DRM_UT_FIOCTL 0x200 197 #define DRM_UT_IOCTL 0x400 198 #define DRM_UT_VBLANK 0x800 199 #endif 200 201 extern __printflike(2, 3) 202 void drm_ut_debug_printk(const char *function_name, 203 const char *format, ...); 204 extern __printflike(2, 3) 205 void drm_err(const char *func, const char *format, ...); 206 207 /***********************************************************************/ 208 /** \name DRM template customization defaults */ 209 /*@{*/ 210 211 /* driver capabilities and requirements mask */ 212 #define DRIVER_USE_AGP 0x1 213 #define DRIVER_PCI_DMA 0x8 214 #define DRIVER_SG 0x10 215 #define DRIVER_HAVE_DMA 0x20 216 #define DRIVER_HAVE_IRQ 0x40 217 #define DRIVER_IRQ_SHARED 0x80 218 #define DRIVER_GEM 0x1000 219 #define DRIVER_MODESET 0x2000 220 #define DRIVER_PRIME 0x4000 221 #define DRIVER_RENDER 0x8000 222 #define DRIVER_ATOMIC 0x10000 223 #define DRIVER_KMS_LEGACY_CONTEXT 0x20000 224 225 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */ 226 227 /***********************************************************************/ 228 /** \name Macros to make printk easier */ 229 /*@{*/ 230 231 /** 232 * Error output. 233 * 234 * \param fmt printf() like format string. 235 * \param arg arguments 236 */ 237 #define DRM_ERROR(fmt, ...) \ 238 drm_err(__func__, fmt, ##__VA_ARGS__) 239 240 /** 241 * Rate limited error output. Like DRM_ERROR() but won't flood the log. 242 * 243 * \param fmt printf() like format string. 244 * \param arg arguments 245 */ 246 #define DRM_ERROR_RATELIMITED(fmt, ...) \ 247 ({ \ 248 static struct krate krate_derr = { .freq = 1, .count = -16 }; \ 249 \ 250 krateprintf(&krate_derr, "error: [" DRM_NAME ":%s] *ERROR* " \ 251 fmt, __func__, ##__VA_ARGS__); \ 252 }) 253 254 #define DRM_INFO(fmt, ...) \ 255 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) 256 257 #define DRM_INFO_ONCE(fmt, ...) \ 258 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) 259 260 /** 261 * Debug output. 262 * 263 * \param fmt printf() like format string. 264 * \param arg arguments 265 */ 266 #define DRM_DEBUG(fmt, args...) \ 267 do { \ 268 if (unlikely(drm_debug & DRM_UT_CORE)) \ 269 drm_ut_debug_printk(__func__, fmt, ##args); \ 270 } while (0) 271 272 #define DRM_DEBUG_DRIVER(fmt, args...) \ 273 do { \ 274 if (unlikely(drm_debug & DRM_UT_DRIVER)) \ 275 drm_ut_debug_printk(__func__, fmt, ##args); \ 276 } while (0) 277 #define DRM_DEBUG_KMS(fmt, args...) \ 278 do { \ 279 if (unlikely(drm_debug & DRM_UT_KMS)) \ 280 drm_ut_debug_printk(__func__, fmt, ##args); \ 281 } while (0) 282 #define DRM_DEBUG_PRIME(fmt, args...) \ 283 do { \ 284 if (unlikely(drm_debug & DRM_UT_PRIME)) \ 285 drm_ut_debug_printk(__func__, fmt, ##args); \ 286 } while (0) 287 #define DRM_DEBUG_ATOMIC(fmt, args...) \ 288 do { \ 289 if (unlikely(drm_debug & DRM_UT_ATOMIC)) \ 290 drm_ut_debug_printk(__func__, fmt, ##args); \ 291 } while (0) 292 293 #ifdef __DragonFly__ 294 #define DRM_DEBUG_FIOCTL(fmt, args...) \ 295 do { \ 296 if (unlikely(drm_debug & DRM_UT_FIOCTL)) \ 297 drm_ut_debug_printk(__func__, fmt, ##args); \ 298 } while (0) 299 #define DRM_DEBUG_IOCTL(fmt, args...) \ 300 do { \ 301 if (unlikely(drm_debug & DRM_UT_IOCTL)) \ 302 drm_ut_debug_printk(__func__, fmt, ##args); \ 303 } while (0) 304 #define DRM_DEBUG_VBLANK(fmt, args...) \ 305 do { \ 306 if (unlikely(drm_debug & DRM_UT_VBLANK)) \ 307 drm_ut_debug_printk(__func__, fmt, ##args); \ 308 } while (0) 309 #define DRM_DEBUG_VBL(fmt, args...) \ 310 do { \ 311 if (unlikely(drm_debug & DRM_UT_VBL)) \ 312 drm_ut_debug_printk(__func__, fmt, ##args); \ 313 } while (0) 314 #endif 315 316 /*@}*/ 317 318 /***********************************************************************/ 319 /** \name Internal types and structures */ 320 /*@{*/ 321 322 SYSCTL_DECL(_hw_drm); 323 324 #define DRM_MAX(a,b) ((a)>(b)?(a):(b)) 325 326 #define DRM_IF_VERSION(maj, min) (maj << 16 | min) 327 328 #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) 329 #define DRM_DEV_UID UID_ROOT 330 #define DRM_DEV_GID GID_WHEEL 331 332 #define DRM_CURPROC curthread 333 #define DRM_STRUCTPROC struct thread 334 #define DRM_LOCK(dev) lockmgr(&(dev)->struct_mutex, LK_EXCLUSIVE) 335 #define DRM_UNLOCK(dev) lockmgr(&(dev)->struct_mutex, LK_RELEASE) 336 #define DRM_LOCK_SLEEP(dev, chan, flags, msg, timeout) \ 337 (lksleep((chan), &(dev)->struct_mutex, (flags), (msg), (timeout))) 338 #if defined(INVARIANTS) 339 #define DRM_LOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) != 0); 340 #define DRM_UNLOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) == 0); 341 #else 342 #define DRM_LOCK_ASSERT(d) 343 #define DRM_UNLOCK_ASSERT(d) 344 #endif 345 346 #define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS) 347 348 typedef void irqreturn_t; 349 #define IRQ_HANDLED /* nothing */ 350 #define IRQ_NONE /* nothing */ 351 352 #define drm_get_device_from_kdev(_kdev) (_kdev->si_drv1) 353 354 #define DRM_MTRR_WC MDF_WRITECOMBINE 355 356 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end, 357 vm_memattr_t memattr); 358 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end); 359 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa); 360 361 /* drm_memory.c */ 362 int drm_mtrr_add(unsigned long offset, size_t size, int flags); 363 int drm_mtrr_del(int handle, unsigned long offset, size_t size, int flags); 364 365 typedef struct drm_pci_id_list 366 { 367 int vendor; 368 int device; 369 long driver_private; 370 char *name; 371 } drm_pci_id_list_t; 372 373 /** 374 * Ioctl function type. 375 * 376 * \param inode device inode. 377 * \param file_priv DRM file private pointer. 378 * \param cmd command. 379 * \param arg argument. 380 */ 381 typedef int drm_ioctl_t(struct drm_device *dev, void *data, 382 struct drm_file *file_priv); 383 384 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, 385 unsigned long arg); 386 387 #define DRM_IOCTL_NR(n) ((n) & 0xff) 388 389 #define DRM_AUTH 0x1 390 #define DRM_MASTER 0x2 391 #define DRM_ROOT_ONLY 0x4 392 #define DRM_CONTROL_ALLOW 0x8 393 #define DRM_UNLOCKED 0x10 394 #define DRM_RENDER_ALLOW 0x20 395 396 struct drm_ioctl_desc { 397 unsigned int cmd; 398 int flags; 399 drm_ioctl_t *func; 400 unsigned int cmd_drv; 401 const char *name; 402 }; 403 404 /** 405 * Creates a driver or general drm_ioctl_desc array entry for the given 406 * ioctl, for use by drm_ioctl(). 407 */ 408 409 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ 410 [DRM_IOCTL_NR(DRM_##ioctl)] = { \ 411 .cmd = DRM_##ioctl, \ 412 .func = _func, \ 413 .flags = _flags, \ 414 .cmd_drv = DRM_IOCTL_##ioctl, \ 415 .name = #ioctl \ 416 } 417 418 typedef struct drm_magic_entry { 419 struct list_head head; 420 struct drm_hash_item hash_item; 421 struct drm_file *priv; 422 struct drm_magic_entry *next; 423 } drm_magic_entry_t; 424 425 /* Event queued up for userspace to read */ 426 struct drm_pending_event { 427 struct drm_event *event; 428 struct list_head link; 429 struct drm_file *file_priv; 430 pid_t pid; /* pid of requester, no guarantee it's valid by the time 431 we deliver the event, for tracing only */ 432 void (*destroy)(struct drm_pending_event *event); 433 }; 434 435 /* initial implementaton using a linked list - todo hashtab */ 436 struct drm_prime_file_private { 437 struct list_head head; 438 #ifdef DUMBBELL_WIP 439 struct mutex lock; 440 #endif /* DUMBBELL_WIP */ 441 }; 442 443 /** File private data */ 444 struct drm_file { 445 int authenticated; 446 struct drm_device *dev; 447 int master; 448 449 /* true when the client has asked us to expose stereo 3D mode flags */ 450 bool stereo_allowed; 451 /* 452 * true if client understands CRTC primary planes and cursor planes 453 * in the plane list 454 */ 455 unsigned universal_planes:1; 456 /* true if client understands atomic properties */ 457 unsigned atomic:1; 458 459 pid_t pid; 460 uid_t uid; 461 drm_magic_t magic; 462 unsigned long ioctl_count; 463 struct list_head lhead; 464 struct kqinfo dkq; 465 466 /** Mapping of mm object handles to object pointers. */ 467 struct idr object_idr; 468 /** Lock for synchronization of access to object_idr. */ 469 struct lock table_lock; 470 471 void *driver_priv; 472 473 int is_master; 474 struct drm_master *masterp; 475 476 /** 477 * fbs - List of framebuffers associated with this file. 478 * 479 * Protected by fbs_lock. Note that the fbs list holds a reference on 480 * the fb object to prevent it from untimely disappearing. 481 */ 482 struct list_head fbs; 483 struct lock fbs_lock; 484 485 /** User-created blob properties; this retains a reference on the 486 * property. */ 487 struct list_head blobs; 488 489 wait_queue_head_t event_wait; 490 struct list_head event_list; 491 int event_space; 492 493 struct drm_prime_file_private prime; 494 }; 495 496 /** 497 * Lock data. 498 */ 499 struct drm_lock_data { 500 struct drm_hw_lock *hw_lock; /**< Hardware lock */ 501 /** Private of lock holder's file (NULL=kernel) */ 502 struct drm_file *file_priv; 503 wait_queue_head_t lock_queue; /**< Queue of blocked processes */ 504 unsigned long lock_time; /**< Time of last lock in jiffies */ 505 }; 506 507 /** 508 * GEM specific mm private for tracking GEM objects 509 */ 510 struct drm_gem_mm { 511 struct drm_vma_offset_manager vma_manager; 512 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */ 513 struct drm_open_hash offset_hash; /**< User token hash table for maps */ 514 struct unrhdr *idxunr; 515 }; 516 517 /** 518 * struct drm_master - drm master structure 519 * 520 * @refcount: Refcount for this master object. 521 * @minor: Link back to minor char device we are master for. Immutable. 522 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex. 523 * @unique_len: Length of unique field. Protected by drm_global_mutex. 524 * @unique_size: Amount allocated. Protected by drm_global_mutex. 525 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex. 526 * @magicfree: List of used authentication tokens. Protected by struct_mutex. 527 * @lock: DRI lock information. 528 * @driver_priv: Pointer to driver-private information. 529 */ 530 struct drm_master { 531 struct kref refcount; /* refcount for this master */ 532 struct list_head head; /**< each minor contains a list of masters */ 533 struct drm_minor *minor; /**< link back to minor we are a master for */ 534 char *unique; /**< Unique identifier: e.g., busid */ 535 int unique_len; /**< Length of unique field */ 536 int unique_size; /**< amount allocated */ 537 int blocked; /**< Blocked due to VC switch? */ 538 struct drm_open_hash magiclist; 539 struct list_head magicfree; 540 struct drm_lock_data lock; 541 void *driver_priv; 542 }; 543 544 /* Size of ringbuffer for vblank timestamps. Just double-buffer 545 * in initial implementation. 546 */ 547 #define DRM_VBLANKTIME_RBSIZE 2 548 549 /* Flags and return codes for get_vblank_timestamp() driver function. */ 550 #define DRM_CALLED_FROM_VBLIRQ 1 551 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) 552 #define DRM_VBLANKTIME_IN_VBLANK (1 << 1) 553 554 /* get_scanout_position() return flags */ 555 #define DRM_SCANOUTPOS_VALID (1 << 0) 556 #define DRM_SCANOUTPOS_IN_VBLANK (1 << 1) 557 #define DRM_SCANOUTPOS_ACCURATE (1 << 2) 558 559 /** 560 * DRM driver structure. This structure represent the common code for 561 * a family of cards. There will one drm_device for each card present 562 * in this family 563 */ 564 struct drm_driver { 565 int (*load) (struct drm_device *, unsigned long flags); 566 int (*use_msi) (struct drm_device *, unsigned long flags); 567 int (*firstopen) (struct drm_device *); 568 int (*open) (struct drm_device *, struct drm_file *); 569 void (*preclose) (struct drm_device *, struct drm_file *file_priv); 570 void (*postclose) (struct drm_device *, struct drm_file *); 571 void (*lastclose) (struct drm_device *); 572 int (*unload) (struct drm_device *); 573 void (*reclaim_buffers_locked) (struct drm_device *, 574 struct drm_file *file_priv); 575 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv); 576 int (*dma_quiescent) (struct drm_device *); 577 int (*context_ctor) (struct drm_device *dev, int context); 578 int (*context_dtor) (struct drm_device *dev, int context); 579 580 /** 581 * get_vblank_counter - get raw hardware vblank counter 582 * @dev: DRM device 583 * @pipe: counter to fetch 584 * 585 * Driver callback for fetching a raw hardware vblank counter for @crtc. 586 * If a device doesn't have a hardware counter, the driver can simply 587 * return the value of drm_vblank_count. The DRM core will account for 588 * missed vblank events while interrupts where disabled based on system 589 * timestamps. 590 * 591 * Wraparound handling and loss of events due to modesetting is dealt 592 * with in the DRM core code. 593 * 594 * RETURNS 595 * Raw vblank counter value. 596 */ 597 u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe); 598 599 /** 600 * enable_vblank - enable vblank interrupt events 601 * @dev: DRM device 602 * @pipe: which irq to enable 603 * 604 * Enable vblank interrupts for @crtc. If the device doesn't have 605 * a hardware vblank counter, this routine should be a no-op, since 606 * interrupts will have to stay on to keep the count accurate. 607 * 608 * RETURNS 609 * Zero on success, appropriate errno if the given @crtc's vblank 610 * interrupt cannot be enabled. 611 */ 612 int (*enable_vblank) (struct drm_device *dev, unsigned int pipe); 613 614 /** 615 * disable_vblank - disable vblank interrupt events 616 * @dev: DRM device 617 * @pipe: which irq to enable 618 * 619 * Disable vblank interrupts for @crtc. If the device doesn't have 620 * a hardware vblank counter, this routine should be a no-op, since 621 * interrupts will have to stay on to keep the count accurate. 622 */ 623 void (*disable_vblank) (struct drm_device *dev, unsigned int pipe); 624 625 /** 626 * Called by \c drm_device_is_agp. Typically used to determine if a 627 * card is really attached to AGP or not. 628 * 629 * \param dev DRM device handle 630 * 631 * \returns 632 * One of three values is returned depending on whether or not the 633 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP 634 * (return of 1), or may or may not be AGP (return of 2). 635 */ 636 int (*device_is_agp) (struct drm_device *dev); 637 638 /** 639 * Called by vblank timestamping code. 640 * 641 * Return the current display scanout position from a crtc, and an 642 * optional accurate ktime_get timestamp of when position was measured. 643 * 644 * \param dev DRM device. 645 * \param pipe Id of the crtc to query. 646 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0). 647 * \param *vpos Target location for current vertical scanout position. 648 * \param *hpos Target location for current horizontal scanout position. 649 * \param *stime Target location for timestamp taken immediately before 650 * scanout position query. Can be NULL to skip timestamp. 651 * \param *etime Target location for timestamp taken immediately after 652 * scanout position query. Can be NULL to skip timestamp. 653 * 654 * Returns vpos as a positive number while in active scanout area. 655 * Returns vpos as a negative number inside vblank, counting the number 656 * of scanlines to go until end of vblank, e.g., -1 means "one scanline 657 * until start of active scanout / end of vblank." 658 * 659 * \return Flags, or'ed together as follows: 660 * 661 * DRM_SCANOUTPOS_VALID = Query successful. 662 * DRM_SCANOUTPOS_INVBL = Inside vblank. 663 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of 664 * this flag means that returned position may be offset by a constant 665 * but unknown small number of scanlines wrt. real scanout position. 666 * 667 */ 668 int (*get_scanout_position) (struct drm_device *dev, unsigned int pipe, 669 unsigned int flags, int *vpos, int *hpos, 670 ktime_t *stime, ktime_t *etime, 671 const struct drm_display_mode *mode); 672 673 /** 674 * Called by \c drm_get_last_vbltimestamp. Should return a precise 675 * timestamp when the most recent VBLANK interval ended or will end. 676 * 677 * Specifically, the timestamp in @vblank_time should correspond as 678 * closely as possible to the time when the first video scanline of 679 * the video frame after the end of VBLANK will start scanning out, 680 * the time immediately after end of the VBLANK interval. If the 681 * @crtc is currently inside VBLANK, this will be a time in the future. 682 * If the @crtc is currently scanning out a frame, this will be the 683 * past start time of the current scanout. This is meant to adhere 684 * to the OpenML OML_sync_control extension specification. 685 * 686 * \param dev dev DRM device handle. 687 * \param pipe crtc for which timestamp should be returned. 688 * \param *max_error Maximum allowable timestamp error in nanoseconds. 689 * Implementation should strive to provide timestamp 690 * with an error of at most *max_error nanoseconds. 691 * Returns true upper bound on error for timestamp. 692 * \param *vblank_time Target location for returned vblank timestamp. 693 * \param flags 0 = Defaults, no special treatment needed. 694 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank 695 * irq handler. Some drivers need to apply some workarounds 696 * for gpu-specific vblank irq quirks if flag is set. 697 * 698 * \returns 699 * Zero if timestamping isn't supported in current display mode or a 700 * negative number on failure. A positive status code on success, 701 * which describes how the vblank_time timestamp was computed. 702 */ 703 int (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe, 704 int *max_error, 705 struct timeval *vblank_time, 706 unsigned flags); 707 708 /* these have to be filled in */ 709 710 void (*irq_handler) (void *arg); 711 void (*irq_preinstall) (struct drm_device *dev); 712 int (*irq_postinstall) (struct drm_device *dev); 713 void (*irq_uninstall) (struct drm_device *dev); 714 715 /** 716 * Driver-specific constructor for drm_gem_objects, to set up 717 * obj->driver_private. 718 * 719 * Returns 0 on success. 720 */ 721 void (*gem_free_object) (struct drm_gem_object *obj); 722 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); 723 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); 724 725 int (*sysctl_init) (struct drm_device *dev, 726 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 727 void (*sysctl_cleanup) (struct drm_device *dev); 728 729 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 730 731 /* dumb alloc support */ 732 int (*dumb_create)(struct drm_file *file_priv, 733 struct drm_device *dev, 734 struct drm_mode_create_dumb *args); 735 int (*dumb_map_offset)(struct drm_file *file_priv, 736 struct drm_device *dev, uint32_t handle, 737 uint64_t *offset); 738 int (*dumb_destroy)(struct drm_file *file_priv, 739 struct drm_device *dev, 740 uint32_t handle); 741 742 /* Driver private ops for this object */ 743 struct cdev_pager_ops *gem_pager_ops; 744 745 int major; 746 int minor; 747 int patchlevel; 748 const char *name; /* Simple driver name */ 749 const char *desc; /* Longer driver name */ 750 const char *date; /* Date of last major changes. */ 751 752 u32 driver_features; 753 int dev_priv_size; 754 const struct drm_ioctl_desc *ioctls; 755 int num_ioctls; 756 }; 757 758 /** 759 * Info file list entry. This structure represents a debugfs or proc file to 760 * be created by the drm core 761 */ 762 struct drm_info_list { 763 const char *name; /** file name */ 764 int (*show)(struct seq_file*, void*); /** show callback */ 765 u32 driver_features; /**< Required driver features for this entry */ 766 void *data; 767 }; 768 769 /** 770 * debugfs node structure. This structure represents a debugfs file. 771 */ 772 struct drm_info_node { 773 struct list_head list; 774 struct drm_minor *minor; 775 const struct drm_info_list *info_ent; 776 struct dentry *dent; 777 }; 778 779 /** 780 * DRM minor structure. This structure represents a drm minor number. 781 */ 782 struct drm_minor { 783 int index; /**< Minor device number */ 784 int type; /**< Control or render */ 785 device_t kdev; /**< OS device */ 786 struct drm_device *dev; 787 788 /* currently active master for this node. Protected by master_mutex */ 789 struct drm_master *master; 790 }; 791 792 struct drm_pending_vblank_event { 793 struct drm_pending_event base; 794 unsigned int pipe; 795 struct drm_event_vblank event; 796 }; 797 798 struct drm_vblank_crtc { 799 struct drm_device *dev; /* pointer to the drm_device */ 800 wait_queue_head_t queue; /**< VBLANK wait queue */ 801 struct timer_list disable_timer; /* delayed disable timer */ 802 803 /* vblank counter, protected by dev->vblank_time_lock for writes */ 804 u32 count; 805 /* vblank timestamps, protected by dev->vblank_time_lock for writes */ 806 struct timeval time[DRM_VBLANKTIME_RBSIZE]; 807 808 atomic_t refcount; /* number of users of vblank interruptsper crtc */ 809 u32 last; /* protected by dev->vbl_lock, used */ 810 /* for wraparound handling */ 811 u32 last_wait; /* Last vblank seqno waited per CRTC */ 812 unsigned int inmodeset; /* Display driver is setting mode */ 813 unsigned int pipe; /* crtc index */ 814 int framedur_ns; /* frame/field duration in ns */ 815 int linedur_ns; /* line duration in ns */ 816 int pixeldur_ns; /* pixel duration in ns */ 817 bool enabled; /* so we don't call enable more than 818 once per disable */ 819 }; 820 821 struct drm_sysctl_info { 822 struct sysctl_ctx_list ctx; 823 char name[2]; 824 }; 825 826 /* Length for the array of resource pointers for drm_get_resource_*. */ 827 #define DRM_MAX_PCI_RESOURCE 6 828 829 /** 830 * DRM device structure. This structure represent a complete card that 831 * may contain multiple heads. 832 */ 833 struct drm_device { 834 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 835 836 char *unique; /* Unique identifier: e.g., busid */ 837 int unique_len; /* Length of unique field */ 838 struct cdev *devnode; /* Device number for mknod */ 839 int if_version; /* Highest interface version set */ 840 841 int flags; /* Flags to open(2) */ 842 843 /* Locks */ 844 struct spinlock dma_lock; /* protects dev->dma */ 845 struct lwkt_serialize irq_lock; /* protects irq condition checks */ 846 struct lock dev_lock; /* protects everything else */ 847 848 /** \name Locks */ 849 /*@{ */ 850 struct lock struct_mutex; /**< For others */ 851 struct lock master_mutex; /**< For drm_minor::master */ 852 /*@} */ 853 854 /** \name Usage Counters */ 855 /*@{ */ 856 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ 857 struct spinlock buf_lock; /**< For drm_device::buf_use and a few other things. */ 858 int buf_use; /**< Buffers in use -- cannot alloc */ 859 atomic_t buf_alloc; /**< Buffer allocation in progress */ 860 /*@} */ 861 862 863 /** \name Performance counters */ 864 /*@{ */ 865 unsigned long counters; 866 enum drm_stat_type types[15]; 867 atomic_t counts[15]; 868 /*@} */ 869 870 /* Authentication */ 871 struct drm_open_hash magiclist; /**< magic hash table */ 872 struct list_head magicfree; 873 874 struct list_head filelist; 875 876 /** \name Memory management */ 877 /*@{ */ 878 struct list_head maplist; /**< Linked list of regions */ 879 int map_count; /**< Number of mappable regions */ 880 struct drm_open_hash map_hash; /**< User token hash table for maps */ 881 882 /** \name Context handle management */ 883 /*@{ */ 884 struct list_head ctxlist; /**< Linked list of context handles */ 885 int ctx_count; /**< Number of context handles */ 886 struct lock ctxlist_mutex; /**< For ctxlist */ 887 888 struct idr ctx_idr; 889 890 /*@} */ 891 892 struct drm_lock_data lock; /* Information on hardware lock */ 893 894 /** \name DMA support */ 895 /*@{ */ 896 struct drm_device_dma *dma; /**< Optional pointer for DMA support */ 897 /*@} */ 898 899 int irq_type; /* IRQ type (MSI enabled or not) */ 900 int irqrid; /* Interrupt used by board */ 901 struct resource *irqr; /* Resource for interrupt used by board */ 902 void *irqh; /* Handle from bus_setup_intr */ 903 904 /* Storage of resource pointers for drm_get_resource_* */ 905 struct resource *pcir[DRM_MAX_PCI_RESOURCE]; 906 int pcirid[DRM_MAX_PCI_RESOURCE]; 907 908 int pci_domain; 909 int pci_bus; 910 int pci_slot; 911 int pci_func; 912 913 /** \name Context support */ 914 /*@{ */ 915 916 __volatile__ long context_flag; /**< Context swapping flag */ 917 __volatile__ long interrupt_flag; /**< Interruption handler flag */ 918 __volatile__ long dma_flag; /**< DMA dispatch flag */ 919 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */ 920 int last_checked; /**< Last context checked for DMA */ 921 int last_context; /**< Last current context */ 922 unsigned long last_switch; /**< jiffies at last context switch */ 923 /*@} */ 924 925 /** \name VBLANK IRQ support */ 926 /*@{ */ 927 int irq_enabled; /**< True if irq handler is enabled */ 928 int irq; /* Interrupt used by board */ 929 930 /* 931 * At load time, disabling the vblank interrupt won't be allowed since 932 * old clients may not call the modeset ioctl and therefore misbehave. 933 * Once the modeset ioctl *has* been called though, we can safely 934 * disable them when unused. 935 */ 936 bool vblank_disable_allowed; 937 938 /* 939 * If true, vblank interrupt will be disabled immediately when the 940 * refcount drops to zero, as opposed to via the vblank disable 941 * timer. 942 * This can be set to true it the hardware has a working vblank 943 * counter and the driver uses drm_vblank_on() and drm_vblank_off() 944 * appropriately. 945 */ 946 bool vblank_disable_immediate; 947 948 /* array of size num_crtcs */ 949 struct drm_vblank_crtc *vblank; 950 951 struct lock vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ 952 struct lock vbl_lock; 953 struct timer_list vblank_disable_timer; 954 955 u32 max_vblank_count; /**< size of vblank counter register */ 956 957 /** 958 * List of events 959 */ 960 struct list_head vblank_event_list; 961 struct lock event_lock; 962 963 /*@} */ 964 965 struct sigio *buf_sigio; /* Processes waiting for SIGIO */ 966 967 /* Sysctl support */ 968 struct drm_sysctl_info *sysctl; 969 970 971 struct drm_sg_mem *sg; /**< Scatter gather memory */ 972 unsigned int num_crtcs; /**< Number of CRTCs on this device */ 973 974 unsigned long *ctx_bitmap; 975 void *dev_private; 976 977 void *drm_ttm_bdev; 978 979 /*@} */ 980 981 struct drm_agp_head *agp; /**< AGP data */ 982 983 struct device *dev; /**< Device structure */ 984 struct pci_dev *pdev; /**< PCI device structure */ 985 986 struct drm_driver *driver; 987 struct drm_local_map *agp_buffer_map; 988 unsigned int agp_buffer_token; 989 struct drm_minor *control; /**< Control node for card */ 990 struct drm_minor *primary; /**< render type primary screen head */ 991 992 struct drm_mode_config mode_config; /**< Current mode config */ 993 994 /** \name GEM information */ 995 /*@{ */ 996 struct lock object_name_lock; 997 struct idr object_name_idr; 998 /*@} */ 999 void *mm_private; 1000 1001 void *sysctl_private; 1002 char busid_str[128]; 1003 int modesetting; 1004 1005 int switch_power_state; 1006 1007 atomic_t unplugged; /* device has been unplugged or gone away */ 1008 }; 1009 1010 #define DRM_SWITCH_POWER_ON 0 1011 #define DRM_SWITCH_POWER_OFF 1 1012 #define DRM_SWITCH_POWER_CHANGING 2 1013 #define DRM_SWITCH_POWER_DYNAMIC_OFF 3 1014 1015 static __inline__ int drm_core_check_feature(struct drm_device *dev, 1016 int feature) 1017 { 1018 return ((dev->driver->driver_features & feature) ? 1 : 0); 1019 } 1020 1021 static inline void drm_device_set_unplugged(struct drm_device *dev) 1022 { 1023 smp_wmb(); 1024 atomic_set(&dev->unplugged, 1); 1025 } 1026 1027 static inline int drm_device_is_unplugged(struct drm_device *dev) 1028 { 1029 int ret = atomic_read(&dev->unplugged); 1030 smp_rmb(); 1031 return ret; 1032 } 1033 1034 static inline bool drm_is_primary_client(const struct drm_file *file_priv) 1035 { 1036 return 0 /* file_priv->minor->type == DRM_MINOR_LEGACY */; 1037 } 1038 1039 /** 1040 * drm_is_master() - Check whether a DRM open-file is DRM-Master 1041 * @file: DRM open-file context 1042 * 1043 * This checks whether a DRM open-file context is owner of the master context 1044 * attached to it. If a file owns a master context, it's called DRM-Master. 1045 * Per DRM device, only one such file can be DRM-Master at a time. 1046 * 1047 * Returns: True if the file is DRM-Master, otherwise false. 1048 */ 1049 static inline bool drm_is_master(const struct drm_file *file) 1050 { 1051 #if 0 1052 return file->master && file->master == file->minor->master; 1053 #else 1054 return true; 1055 #endif 1056 } 1057 1058 /******************************************************************/ 1059 /** \name Internal function definitions */ 1060 /*@{*/ 1061 1062 /* Driver support (drm_drv.h) */ 1063 extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv); 1064 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist); 1065 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist); 1066 int drm_create_cdevs(device_t kdev); 1067 d_ioctl_t drm_ioctl; 1068 extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); 1069 1070 /* Device support (drm_fops.h) */ 1071 d_open_t drm_open; 1072 d_close_t drm_close; 1073 d_read_t drm_read; 1074 d_kqfilter_t drm_kqfilter; 1075 int drm_release(device_t kdev); 1076 1077 d_mmap_t drm_mmap; 1078 d_mmap_single_t drm_mmap_single; 1079 1080 void drm_cdevpriv_dtor(void *cd); 1081 1082 int drm_add_busid_modesetting(struct drm_device *dev, 1083 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 1084 1085 /* File operations helpers (drm_fops.c) */ 1086 extern int drm_open_helper(struct cdev *kdev, int flags, int fmt, 1087 DRM_STRUCTPROC *p, 1088 struct drm_device *dev, 1089 struct file *fp); 1090 1091 /* Misc. IOCTL support (drm_ioctl.c) */ 1092 int drm_noop(struct drm_device *dev, void *data, 1093 struct drm_file *file_priv); 1094 int drm_invalid_op(struct drm_device *dev, void *data, 1095 struct drm_file *file_priv); 1096 1097 /* Cache management (drm_cache.c) */ 1098 void drm_clflush_pages(struct vm_page *pages[], unsigned long num_pages); 1099 void drm_clflush_sg(struct sg_table *st); 1100 void drm_clflush_virt_range(void *addr, unsigned long length); 1101 1102 /* 1103 * These are exported to drivers so that they can implement fencing using 1104 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1105 */ 1106 1107 unsigned long drm_get_resource_start(struct drm_device *dev, 1108 unsigned int resource); 1109 unsigned long drm_get_resource_len(struct drm_device *dev, 1110 unsigned int resource); 1111 1112 /* IRQ support (drm_irq.h) */ 1113 extern int drm_irq_install(struct drm_device *dev, int irq); 1114 extern int drm_irq_uninstall(struct drm_device *dev); 1115 1116 extern int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs); 1117 extern int drm_wait_vblank(struct drm_device *dev, void *data, 1118 struct drm_file *filp); 1119 extern u32 drm_vblank_count(struct drm_device *dev, unsigned int pipe); 1120 extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc); 1121 extern u32 drm_vblank_count_and_time(struct drm_device *dev, unsigned int pipe, 1122 struct timeval *vblanktime); 1123 extern u32 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc, 1124 struct timeval *vblanktime); 1125 extern void drm_send_vblank_event(struct drm_device *dev, unsigned int pipe, 1126 struct drm_pending_vblank_event *e); 1127 extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc, 1128 struct drm_pending_vblank_event *e); 1129 extern void drm_arm_vblank_event(struct drm_device *dev, unsigned int pipe, 1130 struct drm_pending_vblank_event *e); 1131 extern void drm_crtc_arm_vblank_event(struct drm_crtc *crtc, 1132 struct drm_pending_vblank_event *e); 1133 extern bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe); 1134 extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc); 1135 extern int drm_vblank_get(struct drm_device *dev, unsigned int pipe); 1136 extern void drm_vblank_put(struct drm_device *dev, unsigned int pipe); 1137 extern int drm_crtc_vblank_get(struct drm_crtc *crtc); 1138 extern void drm_crtc_vblank_put(struct drm_crtc *crtc); 1139 extern void drm_wait_one_vblank(struct drm_device *dev, unsigned int pipe); 1140 extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc); 1141 extern void drm_vblank_off(struct drm_device *dev, unsigned int pipe); 1142 extern void drm_vblank_on(struct drm_device *dev, unsigned int pipe); 1143 extern void drm_crtc_vblank_off(struct drm_crtc *crtc); 1144 extern void drm_crtc_vblank_reset(struct drm_crtc *crtc); 1145 extern void drm_crtc_vblank_on(struct drm_crtc *crtc); 1146 extern void drm_vblank_cleanup(struct drm_device *dev); 1147 extern u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe); 1148 1149 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, 1150 unsigned int pipe, int *max_error, 1151 struct timeval *vblank_time, 1152 unsigned flags, 1153 const struct drm_display_mode *mode); 1154 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc, 1155 const struct drm_display_mode *mode); 1156 1157 /** 1158 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC 1159 * @crtc: which CRTC's vblank waitqueue to retrieve 1160 * 1161 * This function returns a pointer to the vblank waitqueue for the CRTC. 1162 * Drivers can use this to implement vblank waits using wait_event() & co. 1163 */ 1164 static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc) 1165 { 1166 return &crtc->dev->vblank[drm_crtc_index(crtc)].queue; 1167 } 1168 1169 /* Modesetting support */ 1170 extern void drm_vblank_pre_modeset(struct drm_device *dev, unsigned int pipe); 1171 extern void drm_vblank_post_modeset(struct drm_device *dev, unsigned int pipe); 1172 1173 /* Stub support (drm_stub.h) */ 1174 1175 extern void drm_put_dev(struct drm_device *dev); 1176 extern void drm_unplug_dev(struct drm_device *dev); 1177 extern unsigned int drm_debug; 1178 extern bool drm_atomic; 1179 1180 /* consistent PCI memory functions (drm_pci.c) */ 1181 extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size, 1182 size_t align); 1183 extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah); 1184 1185 /* sysfs support (drm_sysfs.c) */ 1186 extern void drm_sysfs_hotplug_event(struct drm_device *dev); 1187 1188 /* sysctl support (drm_sysctl.h) */ 1189 extern int drm_sysctl_init(struct drm_device *dev); 1190 extern int drm_sysctl_cleanup(struct drm_device *dev); 1191 1192 /* XXX: These are here only because of drm_sysctl.c */ 1193 extern int drm_vblank_offdelay; 1194 extern unsigned int drm_timestamp_precision; 1195 1196 int drm_gem_mmap_single(struct drm_device *dev, vm_ooffset_t *offset, 1197 vm_size_t size, struct vm_object **obj_res, int nprot); 1198 1199 struct ttm_bo_device; 1200 int ttm_bo_mmap_single(struct ttm_bo_device *bdev, vm_ooffset_t *offset, 1201 vm_size_t size, struct vm_object **obj_res, int nprot); 1202 struct ttm_buffer_object; 1203 void ttm_bo_release_mmap(struct ttm_buffer_object *bo); 1204 1205 /* simplified version of kvasnrprintf() for drm needs. */ 1206 char *drm_vasprintf(int flags, const char *format, __va_list ap) __printflike(2, 0); 1207 char *drm_asprintf(int flags, const char *format, ...) __printflike(2, 3); 1208 1209 /* XXX glue logic, should be done in drm_pci_init(), pending drm update */ 1210 void drm_init_pdev(device_t dev, struct pci_dev **pdev); 1211 void drm_fini_pdev(struct pci_dev **pdev); 1212 void drm_print_pdev(struct pci_dev *pdev); 1213 1214 /* Inline drm_free() helper for area kfree() */ 1215 static __inline__ void 1216 drm_free(void *pt, struct malloc_type *area) 1217 { 1218 /* kfree is special!!! */ 1219 if (pt != NULL) 1220 (kfree)(pt, area); 1221 } 1222 1223 struct drm_device *drm_dev_alloc(struct drm_driver *driver, 1224 struct device *parent); 1225 void drm_dev_ref(struct drm_device *dev); 1226 void drm_dev_unref(struct drm_device *dev); 1227 int drm_dev_register(struct drm_device *dev, unsigned long flags); 1228 void drm_dev_unregister(struct drm_device *dev); 1229 int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...); 1230 1231 1232 /* PCI section */ 1233 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev) 1234 { 1235 if (dev->driver->device_is_agp != NULL) { 1236 int err = (*dev->driver->device_is_agp) (dev); 1237 1238 if (err != 2) { 1239 return err; 1240 } 1241 } 1242 1243 return (pci_find_extcap(dev->pdev->dev.bsddev, PCIY_AGP, NULL) == 0); 1244 } 1245 1246 #define DRM_PCIE_SPEED_25 1 1247 #define DRM_PCIE_SPEED_50 2 1248 #define DRM_PCIE_SPEED_80 4 1249 1250 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); 1251 1252 /* XXX bad */ 1253 #define drm_can_sleep() (HZ & 1) 1254 1255 #endif /* __KERNEL__ */ 1256 1257 /* helper for handling conditionals in various for_each macros */ 1258 #define for_each_if(condition) if (!(condition)) {} else 1259 1260 #endif /* _DRM_P_H_ */ 1261