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/signalvar.h> 58 #include <sys/poll.h> 59 #include <linux/highmem.h> 60 #include <sys/sbuf.h> 61 #include <sys/taskqueue.h> 62 #include <sys/tree.h> 63 #include <vm/vm.h> 64 #include <vm/pmap.h> 65 #include <vm/vm_extern.h> 66 #include <vm/vm_kern.h> 67 #include <vm/vm_map.h> 68 #include <vm/vm_object.h> 69 #include <vm/vm_page2.h> 70 #include <vm/vm_pager.h> 71 #include <vm/vm_param.h> 72 #include <machine/param.h> 73 #include <machine/pmap.h> 74 #ifdef __x86_64__ 75 #include <machine/specialreg.h> 76 #endif 77 #include <machine/sysarch.h> 78 #include <sys/endian.h> 79 #include <sys/mman.h> 80 #include <sys/rman.h> 81 #include <sys/memrange.h> 82 #include <sys/mutex.h> 83 84 #include <linux/atomic.h> 85 #include <linux/bug.h> 86 #include <linux/dma-mapping.h> 87 #include <linux/capability.h> 88 #include <linux/err.h> 89 #include <linux/idr.h> 90 #include <linux/pci.h> 91 #include <linux/jiffies.h> 92 #include <linux/kernel.h> 93 #include <linux/fs.h> 94 #include <linux/kref.h> 95 #include <linux/list.h> 96 #include <linux/mm.h> 97 #include <linux/moduleparam.h> 98 #include <linux/mutex.h> 99 #include <linux/slab.h> 100 #include <linux/scatterlist.h> 101 #include <linux/timer.h> 102 #include <asm/io.h> 103 #include <linux/seq_file.h> 104 #include <linux/types.h> 105 #include <linux/vmalloc.h> 106 #include <linux/wait.h> 107 #include <linux/workqueue.h> 108 109 #include <asm/uaccess.h> 110 111 #include <uapi_drm/drm.h> 112 #include <uapi_drm/drm_mode.h> 113 114 #include <drm/drm_agpsupport.h> 115 #include <drm/drm_crtc.h> 116 #include <drm/drm_global.h> 117 #include <drm/drm_hashtab.h> 118 #include <drm/drm_mem_util.h> 119 #include <drm/drm_mm.h> 120 #include <drm/drm_os_linux.h> 121 #include <uapi_drm/drm_sarea.h> 122 #include <drm/drm_vma_manager.h> 123 124 struct drm_file; 125 struct drm_device; 126 struct drm_agp_head; 127 struct drm_local_map; 128 struct drm_device_dma; 129 struct drm_dma_handle; 130 struct drm_gem_object; 131 132 struct device_node; 133 #ifdef CONFIG_VIDEOMODE_HELPERS 134 struct videomode; /* XXX empty struct in videomode.h ? */ 135 #endif 136 struct reservation_object; 137 struct dma_buf_attachment; 138 139 /* 140 * 4 debug categories are defined: 141 * 142 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ... 143 * This is the category used by the DRM_DEBUG() macro. 144 * 145 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ... 146 * This is the category used by the DRM_DEBUG_DRIVER() macro. 147 * 148 * KMS: used in the modesetting code. 149 * This is the category used by the DRM_DEBUG_KMS() macro. 150 * 151 * PRIME: used in the prime code. 152 * This is the category used by the DRM_DEBUG_PRIME() macro. 153 * 154 * ATOMIC: used in the atomic code. 155 * This is the category used by the DRM_DEBUG_ATOMIC() macro. 156 * 157 * 158 * PID: used as modifier to include PID number in messages. 159 * This is the category used by the all debug macros. 160 * 161 * FIOCTL: used in failed ioctl debugging. 162 * This is the category used by the DRM_DEBUG_FIOCTL() macro. 163 * 164 * IOCTL: used in ioctl debugging. 165 * This is the category used by the DRM_DEBUG_IOCTL() macro. 166 * 167 * VBLANK: used in vblank debugging. 168 * This is the category used by the DRM_DEBUG_VBLANK() macro. 169 * 170 * Enabling verbose debug messages is done through the drm.debug parameter, 171 * each category being enabled by a bit. 172 * 173 * drm.debug=0x1 will enable CORE messages 174 * drm.debug=0x2 will enable DRIVER messages 175 * drm.debug=0x3 will enable CORE and DRIVER messages 176 * ... 177 * drm.debug=0xf will enable all messages 178 * 179 * An interesting feature is that it's possible to enable verbose logging at 180 * run-time by using hw.drm.debug sysctl variable: 181 * # sysctl hw.drm.debug=0xfff 182 */ 183 #define DRM_UT_CORE 0x01 184 #define DRM_UT_DRIVER 0x02 185 #define DRM_UT_KMS 0x04 186 #define DRM_UT_PRIME 0x08 187 #define DRM_UT_ATOMIC 0x10 188 #define DRM_UT_VBL 0x20 189 /* Extra DragonFly debug categories */ 190 #ifdef __DragonFly__ 191 #define DRM_UT_RES7 0x40 /* reserved for future expansion */ 192 #define DRM_UT_RES8 0x80 /* reserved for future expansion */ 193 #define DRM_UT_PID 0x100 194 #define DRM_UT_FIOCTL 0x200 195 #define DRM_UT_IOCTL 0x400 196 #define DRM_UT_VBLANK 0x800 197 #endif 198 199 extern __printflike(2, 3) 200 void drm_ut_debug_printk(const char *function_name, 201 const char *format, ...); 202 extern __printflike(2, 3) 203 void drm_err(const char *func, const char *format, ...); 204 205 /***********************************************************************/ 206 /** \name DRM template customization defaults */ 207 /*@{*/ 208 209 /* driver capabilities and requirements mask */ 210 #define DRIVER_USE_AGP 0x1 211 #define DRIVER_PCI_DMA 0x8 212 #define DRIVER_SG 0x10 213 #define DRIVER_HAVE_DMA 0x20 214 #define DRIVER_HAVE_IRQ 0x40 215 #define DRIVER_IRQ_SHARED 0x80 216 #define DRIVER_GEM 0x1000 217 #define DRIVER_MODESET 0x2000 218 #define DRIVER_PRIME 0x4000 219 #define DRIVER_RENDER 0x8000 220 #define DRIVER_ATOMIC 0x10000 221 #define DRIVER_KMS_LEGACY_CONTEXT 0x20000 222 223 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */ 224 225 /***********************************************************************/ 226 /** \name Macros to make printk easier */ 227 /*@{*/ 228 229 /** 230 * Error output. 231 * 232 * \param fmt printf() like format string. 233 * \param arg arguments 234 */ 235 #define DRM_ERROR(fmt, ...) \ 236 drm_err(__func__, fmt, ##__VA_ARGS__) 237 238 /** 239 * Rate limited error output. Like DRM_ERROR() but won't flood the log. 240 * 241 * \param fmt printf() like format string. 242 * \param arg arguments 243 */ 244 #define DRM_ERROR_RATELIMITED(fmt, ...) \ 245 ({ \ 246 static struct krate krate_derr = { .freq = 1, .count = -16 }; \ 247 \ 248 krateprintf(&krate_derr, "error: [" DRM_NAME ":%s] *ERROR* " \ 249 fmt, __func__, ##__VA_ARGS__); \ 250 }) 251 252 #define DRM_INFO(fmt, ...) \ 253 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) 254 255 #define DRM_INFO_ONCE(fmt, ...) \ 256 printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) 257 258 /** 259 * Debug output. 260 * 261 * \param fmt printf() like format string. 262 * \param arg arguments 263 */ 264 #define DRM_DEBUG(fmt, args...) \ 265 do { \ 266 if (unlikely(drm_debug & DRM_UT_CORE)) \ 267 drm_ut_debug_printk(__func__, fmt, ##args); \ 268 } while (0) 269 270 #define DRM_DEBUG_DRIVER(fmt, args...) \ 271 do { \ 272 if (unlikely(drm_debug & DRM_UT_DRIVER)) \ 273 drm_ut_debug_printk(__func__, fmt, ##args); \ 274 } while (0) 275 #define DRM_DEBUG_KMS(fmt, args...) \ 276 do { \ 277 if (unlikely(drm_debug & DRM_UT_KMS)) \ 278 drm_ut_debug_printk(__func__, fmt, ##args); \ 279 } while (0) 280 #define DRM_DEBUG_PRIME(fmt, args...) \ 281 do { \ 282 if (unlikely(drm_debug & DRM_UT_PRIME)) \ 283 drm_ut_debug_printk(__func__, fmt, ##args); \ 284 } while (0) 285 #define DRM_DEBUG_ATOMIC(fmt, args...) \ 286 do { \ 287 if (unlikely(drm_debug & DRM_UT_ATOMIC)) \ 288 drm_ut_debug_printk(__func__, fmt, ##args); \ 289 } while (0) 290 291 #ifdef __DragonFly__ 292 #define DRM_DEBUG_FIOCTL(fmt, args...) \ 293 do { \ 294 if (unlikely(drm_debug & DRM_UT_FIOCTL)) \ 295 drm_ut_debug_printk(__func__, fmt, ##args); \ 296 } while (0) 297 #define DRM_DEBUG_IOCTL(fmt, args...) \ 298 do { \ 299 if (unlikely(drm_debug & DRM_UT_IOCTL)) \ 300 drm_ut_debug_printk(__func__, fmt, ##args); \ 301 } while (0) 302 #define DRM_DEBUG_VBLANK(fmt, args...) \ 303 do { \ 304 if (unlikely(drm_debug & DRM_UT_VBLANK)) \ 305 drm_ut_debug_printk(__func__, fmt, ##args); \ 306 } while (0) 307 #define DRM_DEBUG_VBL(fmt, args...) \ 308 do { \ 309 if (unlikely(drm_debug & DRM_UT_VBL)) \ 310 drm_ut_debug_printk(__func__, fmt, ##args); \ 311 } while (0) 312 #endif 313 314 /*@}*/ 315 316 /***********************************************************************/ 317 /** \name Internal types and structures */ 318 /*@{*/ 319 320 SYSCTL_DECL(_hw_drm); 321 322 #define DRM_MAX(a,b) ((a)>(b)?(a):(b)) 323 324 #define DRM_IF_VERSION(maj, min) (maj << 16 | min) 325 326 #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) 327 #define DRM_DEV_UID UID_ROOT 328 #define DRM_DEV_GID GID_WHEEL 329 330 #define DRM_CURPROC curthread 331 #define DRM_STRUCTPROC struct thread 332 #define DRM_LOCK(dev) lockmgr(&(dev)->struct_mutex, LK_EXCLUSIVE) 333 #define DRM_UNLOCK(dev) lockmgr(&(dev)->struct_mutex, LK_RELEASE) 334 #define DRM_LOCK_SLEEP(dev, chan, flags, msg, timeout) \ 335 (lksleep((chan), &(dev)->struct_mutex, (flags), (msg), (timeout))) 336 #if defined(INVARIANTS) 337 #define DRM_LOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) != 0); 338 #define DRM_UNLOCK_ASSERT(dev) KKASSERT(lockstatus(&(dev)->struct_mutex, curthread) == 0); 339 #else 340 #define DRM_LOCK_ASSERT(d) 341 #define DRM_UNLOCK_ASSERT(d) 342 #endif 343 344 #define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS) 345 346 typedef void irqreturn_t; 347 #define IRQ_HANDLED /* nothing */ 348 #define IRQ_NONE /* nothing */ 349 350 #define drm_get_device_from_kdev(_kdev) (_kdev->si_drv1) 351 352 #define DRM_MTRR_WC MDF_WRITECOMBINE 353 354 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end, 355 vm_memattr_t memattr); 356 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end); 357 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa); 358 359 /* drm_memory.c */ 360 int drm_mtrr_add(unsigned long offset, size_t size, int flags); 361 int drm_mtrr_del(int handle, unsigned long offset, size_t size, int flags); 362 363 typedef struct drm_pci_id_list 364 { 365 int vendor; 366 int device; 367 long driver_private; 368 char *name; 369 } drm_pci_id_list_t; 370 371 /** 372 * Ioctl function type. 373 * 374 * \param inode device inode. 375 * \param file_priv DRM file private pointer. 376 * \param cmd command. 377 * \param arg argument. 378 */ 379 typedef int drm_ioctl_t(struct drm_device *dev, void *data, 380 struct drm_file *file_priv); 381 382 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, 383 unsigned long arg); 384 385 #define DRM_IOCTL_NR(n) ((n) & 0xff) 386 387 #define DRM_AUTH 0x1 388 #define DRM_MASTER 0x2 389 #define DRM_ROOT_ONLY 0x4 390 #define DRM_CONTROL_ALLOW 0x8 391 #define DRM_UNLOCKED 0x10 392 #define DRM_RENDER_ALLOW 0x20 393 394 struct drm_ioctl_desc { 395 unsigned int cmd; 396 int flags; 397 drm_ioctl_t *func; 398 unsigned int cmd_drv; 399 const char *name; 400 }; 401 402 /** 403 * Creates a driver or general drm_ioctl_desc array entry for the given 404 * ioctl, for use by drm_ioctl(). 405 */ 406 407 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ 408 [DRM_IOCTL_NR(DRM_##ioctl)] = { \ 409 .cmd = DRM_##ioctl, \ 410 .func = _func, \ 411 .flags = _flags, \ 412 .cmd_drv = DRM_IOCTL_##ioctl, \ 413 .name = #ioctl \ 414 } 415 416 typedef struct drm_magic_entry { 417 struct list_head head; 418 struct drm_hash_item hash_item; 419 struct drm_file *priv; 420 struct drm_magic_entry *next; 421 } drm_magic_entry_t; 422 423 /* Event queued up for userspace to read */ 424 struct drm_pending_event { 425 struct drm_event *event; 426 struct list_head link; 427 struct drm_file *file_priv; 428 pid_t pid; /* pid of requester, no guarantee it's valid by the time 429 we deliver the event, for tracing only */ 430 void (*destroy)(struct drm_pending_event *event); 431 }; 432 433 /* initial implementaton using a linked list - todo hashtab */ 434 struct drm_prime_file_private { 435 struct list_head head; 436 #ifdef DUMBBELL_WIP 437 struct mutex lock; 438 #endif /* DUMBBELL_WIP */ 439 }; 440 441 /** File private data */ 442 struct drm_file { 443 int authenticated; 444 struct drm_device *dev; 445 int master; 446 447 /* true when the client has asked us to expose stereo 3D mode flags */ 448 bool stereo_allowed; 449 /* 450 * true if client understands CRTC primary planes and cursor planes 451 * in the plane list 452 */ 453 unsigned universal_planes:1; 454 /* true if client understands atomic properties */ 455 unsigned atomic:1; 456 457 pid_t pid; 458 uid_t uid; 459 drm_magic_t magic; 460 unsigned long ioctl_count; 461 struct list_head lhead; 462 struct kqinfo dkq; 463 464 /** Mapping of mm object handles to object pointers. */ 465 struct idr object_idr; 466 /** Lock for synchronization of access to object_idr. */ 467 struct lock table_lock; 468 469 void *driver_priv; 470 471 int is_master; 472 struct drm_master *masterp; 473 474 /** 475 * fbs - List of framebuffers associated with this file. 476 * 477 * Protected by fbs_lock. Note that the fbs list holds a reference on 478 * the fb object to prevent it from untimely disappearing. 479 */ 480 struct list_head fbs; 481 struct lock fbs_lock; 482 483 /** User-created blob properties; this retains a reference on the 484 * property. */ 485 struct list_head blobs; 486 487 wait_queue_head_t event_wait; 488 struct list_head pending_event_list; 489 struct list_head event_list; 490 int event_space; 491 492 struct lock event_read_lock; 493 494 struct drm_prime_file_private prime; 495 }; 496 497 /** 498 * Lock data. 499 */ 500 struct drm_lock_data { 501 struct drm_hw_lock *hw_lock; /**< Hardware lock */ 502 /** Private of lock holder's file (NULL=kernel) */ 503 struct drm_file *file_priv; 504 wait_queue_head_t lock_queue; /**< Queue of blocked processes */ 505 unsigned long lock_time; /**< Time of last lock in jiffies */ 506 }; 507 508 /** 509 * GEM specific mm private for tracking GEM objects 510 */ 511 struct drm_gem_mm { 512 struct drm_vma_offset_manager vma_manager; 513 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */ 514 struct drm_open_hash offset_hash; /**< User token hash table for maps */ 515 struct unrhdr *idxunr; 516 }; 517 518 /** 519 * struct drm_master - drm master structure 520 * 521 * @refcount: Refcount for this master object. 522 * @minor: Link back to minor char device we are master for. Immutable. 523 * @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex. 524 * @unique_len: Length of unique field. Protected by drm_global_mutex. 525 * @unique_size: Amount allocated. Protected by drm_global_mutex. 526 * @magiclist: Hash of used authentication tokens. Protected by struct_mutex. 527 * @magicfree: List of used authentication tokens. Protected by struct_mutex. 528 * @lock: DRI lock information. 529 * @driver_priv: Pointer to driver-private information. 530 */ 531 struct drm_master { 532 struct kref refcount; /* refcount for this master */ 533 struct list_head head; /**< each minor contains a list of masters */ 534 struct drm_minor *minor; /**< link back to minor we are a master for */ 535 char *unique; /**< Unique identifier: e.g., busid */ 536 int unique_len; /**< Length of unique field */ 537 int unique_size; /**< amount allocated */ 538 int blocked; /**< Blocked due to VC switch? */ 539 struct drm_open_hash magiclist; 540 struct list_head magicfree; 541 struct drm_lock_data lock; 542 void *driver_priv; 543 }; 544 545 /* Size of ringbuffer for vblank timestamps. Just double-buffer 546 * in initial implementation. 547 */ 548 #define DRM_VBLANKTIME_RBSIZE 2 549 550 /* Flags and return codes for get_vblank_timestamp() driver function. */ 551 #define DRM_CALLED_FROM_VBLIRQ 1 552 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) 553 #define DRM_VBLANKTIME_IN_VBLANK (1 << 1) 554 555 /* get_scanout_position() return flags */ 556 #define DRM_SCANOUTPOS_VALID (1 << 0) 557 #define DRM_SCANOUTPOS_IN_VBLANK (1 << 1) 558 #define DRM_SCANOUTPOS_ACCURATE (1 << 2) 559 560 /** 561 * DRM driver structure. This structure represent the common code for 562 * a family of cards. There will one drm_device for each card present 563 * in this family 564 */ 565 struct drm_driver { 566 int (*load) (struct drm_device *, unsigned long flags); 567 int (*use_msi) (struct drm_device *, unsigned long flags); 568 int (*firstopen) (struct drm_device *); 569 int (*open) (struct drm_device *, struct drm_file *); 570 void (*preclose) (struct drm_device *, struct drm_file *file_priv); 571 void (*postclose) (struct drm_device *, struct drm_file *); 572 void (*lastclose) (struct drm_device *); 573 int (*unload) (struct drm_device *); 574 void (*reclaim_buffers_locked) (struct drm_device *, 575 struct drm_file *file_priv); 576 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv); 577 int (*dma_quiescent) (struct drm_device *); 578 int (*context_ctor) (struct drm_device *dev, int context); 579 int (*context_dtor) (struct drm_device *dev, int context); 580 581 /** 582 * get_vblank_counter - get raw hardware vblank counter 583 * @dev: DRM device 584 * @pipe: counter to fetch 585 * 586 * Driver callback for fetching a raw hardware vblank counter for @crtc. 587 * If a device doesn't have a hardware counter, the driver can simply 588 * return the value of drm_vblank_count. The DRM core will account for 589 * missed vblank events while interrupts where disabled based on system 590 * timestamps. 591 * 592 * Wraparound handling and loss of events due to modesetting is dealt 593 * with in the DRM core code. 594 * 595 * RETURNS 596 * Raw vblank counter value. 597 */ 598 u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe); 599 600 /** 601 * enable_vblank - enable vblank interrupt events 602 * @dev: DRM device 603 * @pipe: which irq to enable 604 * 605 * Enable vblank interrupts for @crtc. If the device doesn't have 606 * a hardware vblank counter, this routine should be a no-op, since 607 * interrupts will have to stay on to keep the count accurate. 608 * 609 * RETURNS 610 * Zero on success, appropriate errno if the given @crtc's vblank 611 * interrupt cannot be enabled. 612 */ 613 int (*enable_vblank) (struct drm_device *dev, unsigned int pipe); 614 615 /** 616 * disable_vblank - disable vblank interrupt events 617 * @dev: DRM device 618 * @pipe: which irq to enable 619 * 620 * Disable vblank interrupts for @crtc. If the device doesn't have 621 * a hardware vblank counter, this routine should be a no-op, since 622 * interrupts will have to stay on to keep the count accurate. 623 */ 624 void (*disable_vblank) (struct drm_device *dev, unsigned int pipe); 625 626 /** 627 * Called by \c drm_device_is_agp. Typically used to determine if a 628 * card is really attached to AGP or not. 629 * 630 * \param dev DRM device handle 631 * 632 * \returns 633 * One of three values is returned depending on whether or not the 634 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP 635 * (return of 1), or may or may not be AGP (return of 2). 636 */ 637 int (*device_is_agp) (struct drm_device *dev); 638 639 /** 640 * Called by vblank timestamping code. 641 * 642 * Return the current display scanout position from a crtc, and an 643 * optional accurate ktime_get timestamp of when position was measured. 644 * 645 * \param dev DRM device. 646 * \param pipe Id of the crtc to query. 647 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0). 648 * \param *vpos Target location for current vertical scanout position. 649 * \param *hpos Target location for current horizontal scanout position. 650 * \param *stime Target location for timestamp taken immediately before 651 * scanout position query. Can be NULL to skip timestamp. 652 * \param *etime Target location for timestamp taken immediately after 653 * scanout position query. Can be NULL to skip timestamp. 654 * 655 * Returns vpos as a positive number while in active scanout area. 656 * Returns vpos as a negative number inside vblank, counting the number 657 * of scanlines to go until end of vblank, e.g., -1 means "one scanline 658 * until start of active scanout / end of vblank." 659 * 660 * \return Flags, or'ed together as follows: 661 * 662 * DRM_SCANOUTPOS_VALID = Query successful. 663 * DRM_SCANOUTPOS_INVBL = Inside vblank. 664 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of 665 * this flag means that returned position may be offset by a constant 666 * but unknown small number of scanlines wrt. real scanout position. 667 * 668 */ 669 int (*get_scanout_position) (struct drm_device *dev, unsigned int pipe, 670 unsigned int flags, int *vpos, int *hpos, 671 ktime_t *stime, ktime_t *etime, 672 const struct drm_display_mode *mode); 673 674 /** 675 * Called by \c drm_get_last_vbltimestamp. Should return a precise 676 * timestamp when the most recent VBLANK interval ended or will end. 677 * 678 * Specifically, the timestamp in @vblank_time should correspond as 679 * closely as possible to the time when the first video scanline of 680 * the video frame after the end of VBLANK will start scanning out, 681 * the time immediately after end of the VBLANK interval. If the 682 * @crtc is currently inside VBLANK, this will be a time in the future. 683 * If the @crtc is currently scanning out a frame, this will be the 684 * past start time of the current scanout. This is meant to adhere 685 * to the OpenML OML_sync_control extension specification. 686 * 687 * \param dev dev DRM device handle. 688 * \param pipe crtc for which timestamp should be returned. 689 * \param *max_error Maximum allowable timestamp error in nanoseconds. 690 * Implementation should strive to provide timestamp 691 * with an error of at most *max_error nanoseconds. 692 * Returns true upper bound on error for timestamp. 693 * \param *vblank_time Target location for returned vblank timestamp. 694 * \param flags 0 = Defaults, no special treatment needed. 695 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank 696 * irq handler. Some drivers need to apply some workarounds 697 * for gpu-specific vblank irq quirks if flag is set. 698 * 699 * \returns 700 * Zero if timestamping isn't supported in current display mode or a 701 * negative number on failure. A positive status code on success, 702 * which describes how the vblank_time timestamp was computed. 703 */ 704 int (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe, 705 int *max_error, 706 struct timeval *vblank_time, 707 unsigned flags); 708 709 /* these have to be filled in */ 710 711 void (*irq_handler) (void *arg); 712 void (*irq_preinstall) (struct drm_device *dev); 713 int (*irq_postinstall) (struct drm_device *dev); 714 void (*irq_uninstall) (struct drm_device *dev); 715 716 /** 717 * Driver-specific constructor for drm_gem_objects, to set up 718 * obj->driver_private. 719 * 720 * Returns 0 on success. 721 */ 722 void (*gem_free_object) (struct drm_gem_object *obj); 723 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); 724 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); 725 726 int (*sysctl_init) (struct drm_device *dev, 727 struct sysctl_ctx_list *ctx, struct sysctl_oid *top); 728 void (*sysctl_cleanup) (struct drm_device *dev); 729 730 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 731 732 /* dumb alloc support */ 733 int (*dumb_create)(struct drm_file *file_priv, 734 struct drm_device *dev, 735 struct drm_mode_create_dumb *args); 736 int (*dumb_map_offset)(struct drm_file *file_priv, 737 struct drm_device *dev, uint32_t handle, 738 uint64_t *offset); 739 int (*dumb_destroy)(struct drm_file *file_priv, 740 struct drm_device *dev, 741 uint32_t handle); 742 743 /* Driver private ops for this object */ 744 struct cdev_pager_ops *gem_pager_ops; 745 746 int major; 747 int minor; 748 int patchlevel; 749 const char *name; /* Simple driver name */ 750 const char *desc; /* Longer driver name */ 751 const char *date; /* Date of last major changes. */ 752 753 u32 driver_features; 754 int dev_priv_size; 755 const struct drm_ioctl_desc *ioctls; 756 int num_ioctls; 757 }; 758 759 /** 760 * Info file list entry. This structure represents a debugfs or proc file to 761 * be created by the drm core 762 */ 763 struct drm_info_list { 764 const char *name; /** file name */ 765 int (*show)(struct seq_file*, void*); /** show callback */ 766 u32 driver_features; /**< Required driver features for this entry */ 767 void *data; 768 }; 769 770 /** 771 * debugfs node structure. This structure represents a debugfs file. 772 */ 773 struct drm_info_node { 774 struct list_head list; 775 struct drm_minor *minor; 776 const struct drm_info_list *info_ent; 777 struct dentry *dent; 778 }; 779 780 /** 781 * DRM minor structure. This structure represents a drm minor number. 782 */ 783 struct drm_minor { 784 int index; /**< Minor device number */ 785 int type; /**< Control or render */ 786 struct device *kdev; /**< Linux device */ 787 struct drm_device *dev; 788 789 /* currently active master for this node. Protected by master_mutex */ 790 struct drm_master *master; 791 }; 792 793 struct drm_pending_vblank_event { 794 struct drm_pending_event base; 795 unsigned int pipe; 796 struct drm_event_vblank event; 797 }; 798 799 struct drm_vblank_crtc { 800 struct drm_device *dev; /* pointer to the drm_device */ 801 wait_queue_head_t queue; /**< VBLANK wait queue */ 802 struct timer_list disable_timer; /* delayed disable timer */ 803 804 /* vblank counter, protected by dev->vblank_time_lock for writes */ 805 u32 count; 806 /* vblank timestamps, protected by dev->vblank_time_lock for writes */ 807 struct timeval time[DRM_VBLANKTIME_RBSIZE]; 808 809 atomic_t refcount; /* number of users of vblank interruptsper crtc */ 810 u32 last; /* protected by dev->vbl_lock, used */ 811 /* for wraparound handling */ 812 u32 last_wait; /* Last vblank seqno waited per CRTC */ 813 unsigned int inmodeset; /* Display driver is setting mode */ 814 unsigned int pipe; /* crtc index */ 815 int framedur_ns; /* frame/field duration in ns */ 816 int linedur_ns; /* line duration in ns */ 817 int pixeldur_ns; /* pixel duration in ns */ 818 bool enabled; /* so we don't call enable more than 819 once per disable */ 820 }; 821 822 struct drm_sysctl_info { 823 struct sysctl_ctx_list ctx; 824 char name[2]; 825 }; 826 827 /* Length for the array of resource pointers for drm_get_resource_*. */ 828 #define DRM_MAX_PCI_RESOURCE 6 829 830 /** 831 * DRM device structure. This structure represent a complete card that 832 * may contain multiple heads. 833 */ 834 struct drm_device { 835 drm_pci_id_list_t *id_entry; /* PCI ID, name, and chipset private */ 836 837 char *unique; /* Unique identifier: e.g., busid */ 838 int unique_len; /* Length of unique field */ 839 struct cdev *devnode; /* Device number for mknod */ 840 int if_version; /* Highest interface version set */ 841 842 int flags; /* Flags to open(2) */ 843 844 /* Locks */ 845 struct spinlock dma_lock; /* protects dev->dma */ 846 struct lwkt_serialize irq_lock; /* protects irq condition checks */ 847 struct lock dev_lock; /* protects everything else */ 848 849 /** \name Locks */ 850 /*@{ */ 851 struct lock struct_mutex; /**< For others */ 852 struct lock master_mutex; /**< For drm_minor::master */ 853 /*@} */ 854 855 /** \name Usage Counters */ 856 /*@{ */ 857 int open_count; /**< Outstanding files open, protected by drm_global_mutex. */ 858 struct spinlock buf_lock; /**< For drm_device::buf_use and a few other things. */ 859 int buf_use; /**< Buffers in use -- cannot alloc */ 860 atomic_t buf_alloc; /**< Buffer allocation in progress */ 861 /*@} */ 862 863 864 /** \name Performance counters */ 865 /*@{ */ 866 unsigned long counters; 867 enum drm_stat_type types[15]; 868 atomic_t counts[15]; 869 /*@} */ 870 871 /* Authentication */ 872 struct drm_open_hash magiclist; /**< magic hash table */ 873 struct list_head magicfree; 874 875 struct list_head filelist; 876 877 /** \name Memory management */ 878 /*@{ */ 879 struct list_head maplist; /**< Linked list of regions */ 880 int map_count; /**< Number of mappable regions */ 881 struct drm_open_hash map_hash; /**< User token hash table for maps */ 882 883 /** \name Context handle management */ 884 /*@{ */ 885 struct list_head ctxlist; /**< Linked list of context handles */ 886 int ctx_count; /**< Number of context handles */ 887 struct lock ctxlist_mutex; /**< For ctxlist */ 888 889 struct idr ctx_idr; 890 891 /*@} */ 892 893 struct drm_lock_data lock; /* Information on hardware lock */ 894 895 /** \name DMA support */ 896 /*@{ */ 897 struct drm_device_dma *dma; /**< Optional pointer for DMA support */ 898 /*@} */ 899 900 int irq_type; /* IRQ type (MSI enabled or not) */ 901 int irqrid; /* Interrupt used by board */ 902 struct resource *irqr; /* Resource for interrupt used by board */ 903 void *irqh; /* Handle from bus_setup_intr */ 904 905 /* Storage of resource pointers for drm_get_resource_* */ 906 struct resource *pcir[DRM_MAX_PCI_RESOURCE]; 907 int pcirid[DRM_MAX_PCI_RESOURCE]; 908 909 int pci_domain; 910 int pci_bus; 911 int pci_slot; 912 int pci_func; 913 914 /** \name Context support */ 915 /*@{ */ 916 917 __volatile__ long context_flag; /**< Context swapping flag */ 918 __volatile__ long interrupt_flag; /**< Interruption handler flag */ 919 __volatile__ long dma_flag; /**< DMA dispatch flag */ 920 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */ 921 int last_checked; /**< Last context checked for DMA */ 922 int last_context; /**< Last current context */ 923 unsigned long last_switch; /**< jiffies at last context switch */ 924 /*@} */ 925 926 /** \name VBLANK IRQ support */ 927 /*@{ */ 928 int irq_enabled; /**< True if irq handler is enabled */ 929 int irq; /* Interrupt used by board */ 930 931 /* 932 * If true, vblank interrupt will be disabled immediately when the 933 * refcount drops to zero, as opposed to via the vblank disable 934 * timer. 935 * This can be set to true it the hardware has a working vblank 936 * counter and the driver uses drm_vblank_on() and drm_vblank_off() 937 * appropriately. 938 */ 939 bool vblank_disable_immediate; 940 941 /* array of size num_crtcs */ 942 struct drm_vblank_crtc *vblank; 943 944 struct lock vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ 945 struct lock vbl_lock; 946 struct timer_list vblank_disable_timer; 947 948 u32 max_vblank_count; /**< size of vblank counter register */ 949 950 /** 951 * List of events 952 */ 953 struct list_head vblank_event_list; 954 struct lock event_lock; 955 956 /*@} */ 957 958 struct sigio *buf_sigio; /* Processes waiting for SIGIO */ 959 960 /* Sysctl support */ 961 struct drm_sysctl_info *sysctl; 962 963 964 struct drm_sg_mem *sg; /**< Scatter gather memory */ 965 unsigned int num_crtcs; /**< Number of CRTCs on this device */ 966 967 unsigned long *ctx_bitmap; 968 void *dev_private; 969 970 void *drm_ttm_bdev; 971 972 /*@} */ 973 974 struct { 975 int context; 976 struct drm_hw_lock *lock; 977 } sigdata; 978 979 struct drm_agp_head *agp; /**< AGP data */ 980 981 struct device *dev; /**< Device structure */ 982 struct pci_dev *pdev; /**< PCI device structure */ 983 984 struct drm_driver *driver; 985 struct drm_local_map *agp_buffer_map; 986 unsigned int agp_buffer_token; 987 struct drm_minor *control; /**< Control node for card */ 988 struct drm_minor *primary; /**< render type primary screen head */ 989 990 struct drm_mode_config mode_config; /**< Current mode config */ 991 992 /** \name GEM information */ 993 /*@{ */ 994 struct lock object_name_lock; 995 struct idr object_name_idr; 996 /*@} */ 997 void *mm_private; 998 999 void *sysctl_private; 1000 char busid_str[128]; 1001 int modesetting; 1002 1003 int switch_power_state; 1004 1005 #ifdef __DragonFly__ 1006 atomic_t unplugged; /* device has been unplugged or gone away */ 1007 #endif /* __DragonFly__ */ 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 int drm_event_reserve_init_locked(struct drm_device *dev, 1091 struct drm_file *file_priv, 1092 struct drm_pending_event *p, 1093 struct drm_event *e); 1094 int drm_event_reserve_init(struct drm_device *dev, 1095 struct drm_file *file_priv, 1096 struct drm_pending_event *p, 1097 struct drm_event *e); 1098 void drm_event_cancel_free(struct drm_device *dev, 1099 struct drm_pending_event *p); 1100 void drm_send_event_locked(struct drm_device *dev, struct drm_pending_event *e); 1101 void drm_send_event(struct drm_device *dev, struct drm_pending_event *e); 1102 1103 /* Misc. IOCTL support (drm_ioctl.c) */ 1104 int drm_noop(struct drm_device *dev, void *data, 1105 struct drm_file *file_priv); 1106 int drm_invalid_op(struct drm_device *dev, void *data, 1107 struct drm_file *file_priv); 1108 1109 /* Cache management (drm_cache.c) */ 1110 void drm_clflush_pages(struct vm_page *pages[], unsigned long num_pages); 1111 void drm_clflush_sg(struct sg_table *st); 1112 void drm_clflush_virt_range(void *addr, unsigned long length); 1113 1114 /* 1115 * These are exported to drivers so that they can implement fencing using 1116 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1117 */ 1118 1119 unsigned long drm_get_resource_start(struct drm_device *dev, 1120 unsigned int resource); 1121 unsigned long drm_get_resource_len(struct drm_device *dev, 1122 unsigned int resource); 1123 1124 /* IRQ support (drm_irq.h) */ 1125 extern int drm_irq_install(struct drm_device *dev, int irq); 1126 extern int drm_irq_uninstall(struct drm_device *dev); 1127 1128 extern int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs); 1129 extern int drm_wait_vblank(struct drm_device *dev, void *data, 1130 struct drm_file *filp); 1131 extern u32 drm_vblank_count(struct drm_device *dev, unsigned int pipe); 1132 extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc); 1133 extern u32 drm_vblank_count_and_time(struct drm_device *dev, unsigned int pipe, 1134 struct timeval *vblanktime); 1135 extern u32 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc, 1136 struct timeval *vblanktime); 1137 extern void drm_send_vblank_event(struct drm_device *dev, unsigned int pipe, 1138 struct drm_pending_vblank_event *e); 1139 extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc, 1140 struct drm_pending_vblank_event *e); 1141 extern void drm_arm_vblank_event(struct drm_device *dev, unsigned int pipe, 1142 struct drm_pending_vblank_event *e); 1143 extern void drm_crtc_arm_vblank_event(struct drm_crtc *crtc, 1144 struct drm_pending_vblank_event *e); 1145 extern bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe); 1146 extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc); 1147 extern int drm_vblank_get(struct drm_device *dev, unsigned int pipe); 1148 extern void drm_vblank_put(struct drm_device *dev, unsigned int pipe); 1149 extern int drm_crtc_vblank_get(struct drm_crtc *crtc); 1150 extern void drm_crtc_vblank_put(struct drm_crtc *crtc); 1151 extern void drm_wait_one_vblank(struct drm_device *dev, unsigned int pipe); 1152 extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc); 1153 extern void drm_vblank_off(struct drm_device *dev, unsigned int pipe); 1154 extern void drm_vblank_on(struct drm_device *dev, unsigned int pipe); 1155 extern void drm_crtc_vblank_off(struct drm_crtc *crtc); 1156 extern void drm_crtc_vblank_reset(struct drm_crtc *crtc); 1157 extern void drm_crtc_vblank_on(struct drm_crtc *crtc); 1158 extern void drm_vblank_cleanup(struct drm_device *dev); 1159 extern u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe); 1160 1161 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, 1162 unsigned int pipe, int *max_error, 1163 struct timeval *vblank_time, 1164 unsigned flags, 1165 const struct drm_display_mode *mode); 1166 extern void drm_calc_timestamping_constants(struct drm_crtc *crtc, 1167 const struct drm_display_mode *mode); 1168 1169 /** 1170 * drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC 1171 * @crtc: which CRTC's vblank waitqueue to retrieve 1172 * 1173 * This function returns a pointer to the vblank waitqueue for the CRTC. 1174 * Drivers can use this to implement vblank waits using wait_event() & co. 1175 */ 1176 static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc) 1177 { 1178 return &crtc->dev->vblank[drm_crtc_index(crtc)].queue; 1179 } 1180 1181 /* Modesetting support */ 1182 extern void drm_vblank_pre_modeset(struct drm_device *dev, unsigned int pipe); 1183 extern void drm_vblank_post_modeset(struct drm_device *dev, unsigned int pipe); 1184 1185 /* Stub support (drm_stub.h) */ 1186 1187 extern void drm_put_dev(struct drm_device *dev); 1188 extern void drm_unplug_dev(struct drm_device *dev); 1189 extern unsigned int drm_debug; 1190 extern bool drm_atomic; 1191 1192 /* consistent PCI memory functions (drm_pci.c) */ 1193 extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size, 1194 size_t align); 1195 extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah); 1196 1197 /* sysfs support (drm_sysfs.c) */ 1198 extern void drm_sysfs_hotplug_event(struct drm_device *dev); 1199 1200 /* sysctl support (drm_sysctl.h) */ 1201 extern int drm_sysctl_init(struct drm_device *dev); 1202 extern int drm_sysctl_cleanup(struct drm_device *dev); 1203 1204 /* XXX: These are here only because of drm_sysctl.c */ 1205 extern int drm_vblank_offdelay; 1206 extern unsigned int drm_timestamp_precision; 1207 1208 int drm_gem_mmap_single(struct drm_device *dev, vm_ooffset_t *offset, 1209 vm_size_t size, struct vm_object **obj_res, int nprot); 1210 1211 struct ttm_bo_device; 1212 int ttm_bo_mmap_single(struct ttm_bo_device *bdev, vm_ooffset_t *offset, 1213 vm_size_t size, struct vm_object **obj_res, int nprot); 1214 struct ttm_buffer_object; 1215 void ttm_bo_release_mmap(struct ttm_buffer_object *bo); 1216 1217 /* simplified version of kvasnrprintf() for drm needs. */ 1218 char *drm_vasprintf(int flags, const char *format, __va_list ap) __printflike(2, 0); 1219 char *drm_asprintf(int flags, const char *format, ...) __printflike(2, 3); 1220 1221 /* XXX glue logic, should be done in drm_pci_init(), pending drm update */ 1222 void drm_init_pdev(device_t dev, struct pci_dev **pdev); 1223 void drm_fini_pdev(struct pci_dev **pdev); 1224 void drm_print_pdev(struct pci_dev *pdev); 1225 1226 /* Inline drm_free() helper for area kfree() */ 1227 static __inline__ void 1228 drm_free(void *pt, struct malloc_type *area) 1229 { 1230 /* kfree is special!!! */ 1231 if (pt != NULL) 1232 (kfree)(pt, area); 1233 } 1234 1235 struct drm_device *drm_dev_alloc(struct drm_driver *driver, 1236 struct device *parent); 1237 void drm_dev_ref(struct drm_device *dev); 1238 void drm_dev_unref(struct drm_device *dev); 1239 int drm_dev_register(struct drm_device *dev, unsigned long flags); 1240 void drm_dev_unregister(struct drm_device *dev); 1241 int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...); 1242 1243 1244 /* PCI section */ 1245 static __inline__ int drm_pci_device_is_agp(struct drm_device *dev) 1246 { 1247 if (dev->driver->device_is_agp != NULL) { 1248 int err = (*dev->driver->device_is_agp) (dev); 1249 1250 if (err != 2) { 1251 return err; 1252 } 1253 } 1254 1255 return (pci_find_extcap(dev->pdev->dev.bsddev, PCIY_AGP, NULL) == 0); 1256 } 1257 1258 #define DRM_PCIE_SPEED_25 1 1259 #define DRM_PCIE_SPEED_50 2 1260 #define DRM_PCIE_SPEED_80 4 1261 1262 extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask); 1263 1264 /* XXX bad */ 1265 #define drm_can_sleep() (HZ & 1) 1266 1267 #endif /* __KERNEL__ */ 1268 1269 /* helper for handling conditionals in various for_each macros */ 1270 #define for_each_if(condition) if (!(condition)) {} else 1271 1272 #endif /* _DRM_P_H_ */ 1273