/include/drm/drmP.h
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Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
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1/** 2 * \file drmP.h 3 * Private header for Direct Rendering Manager 4 * 5 * \author Rickard E. (Rik) Faith <faith@valinux.com> 6 * \author Gareth Hughes <gareth@valinux.com> 7 */ 8 9/* 10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 12 * Copyright (c) 2009-2010, Code Aurora Forum. 13 * All rights reserved. 14 * 15 * Permission is hereby granted, free of charge, to any person obtaining a 16 * copy of this software and associated documentation files (the "Software"), 17 * to deal in the Software without restriction, including without limitation 18 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 19 * and/or sell copies of the Software, and to permit persons to whom the 20 * Software is furnished to do so, subject to the following conditions: 21 * 22 * The above copyright notice and this permission notice (including the next 23 * paragraph) shall be included in all copies or substantial portions of the 24 * Software. 25 * 26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 29 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 30 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 31 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 32 * OTHER DEALINGS IN THE SOFTWARE. 33 */ 34 35#ifndef _DRM_P_H_ 36#define _DRM_P_H_ 37 38#ifdef __KERNEL__ 39#ifdef __alpha__ 40/* add include of current.h so that "current" is defined 41 * before static inline funcs in wait.h. Doing this so we 42 * can build the DRM (part of PI DRI). 4/21/2000 S + B */ 43#include <asm/current.h> 44#endif /* __alpha__ */ 45#include <linux/module.h> 46#include <linux/kernel.h> 47#include <linux/miscdevice.h> 48#include <linux/fs.h> 49#include <linux/proc_fs.h> 50#include <linux/init.h> 51#include <linux/file.h> 52#include <linux/platform_device.h> 53#include <linux/pci.h> 54#include <linux/jiffies.h> 55#include <linux/dma-mapping.h> 56#include <linux/mm.h> 57#include <linux/cdev.h> 58#include <linux/mutex.h> 59#include <linux/slab.h> 60#if defined(__alpha__) || defined(__powerpc__) 61#include <asm/pgtable.h> /* For pte_wrprotect */ 62#endif 63#include <asm/io.h> 64#include <asm/mman.h> 65#include <asm/uaccess.h> 66#ifdef CONFIG_MTRR 67#include <asm/mtrr.h> 68#endif 69#if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE) 70#include <linux/types.h> 71#include <linux/agp_backend.h> 72#endif 73#include <linux/workqueue.h> 74#include <linux/poll.h> 75#include <asm/pgalloc.h> 76#include "drm.h" 77 78#include <linux/idr.h> 79 80#define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE))) 81#define __OS_HAS_MTRR (defined(CONFIG_MTRR)) 82 83struct drm_file; 84struct drm_device; 85 86#include "drm_os_linux.h" 87#include "drm_hashtab.h" 88#include "drm_mm.h" 89 90#define DRM_UT_CORE 0x01 91#define DRM_UT_DRIVER 0x02 92#define DRM_UT_KMS 0x04 93/* 94 * Three debug levels are defined. 95 * drm_core, drm_driver, drm_kms 96 * drm_core level can be used in the generic drm code. For example: 97 * drm_ioctl, drm_mm, drm_memory 98 * The macro definition of DRM_DEBUG is used. 99 * DRM_DEBUG(fmt, args...) 100 * The debug info by using the DRM_DEBUG can be obtained by adding 101 * the boot option of "drm.debug=1". 102 * 103 * drm_driver level can be used in the specific drm driver. It is used 104 * to add the debug info related with the drm driver. For example: 105 * i915_drv, i915_dma, i915_gem, radeon_drv, 106 * The macro definition of DRM_DEBUG_DRIVER can be used. 107 * DRM_DEBUG_DRIVER(fmt, args...) 108 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by 109 * adding the boot option of "drm.debug=0x02" 110 * 111 * drm_kms level can be used in the KMS code related with specific drm driver. 112 * It is used to add the debug info related with KMS mode. For example: 113 * the connector/crtc , 114 * The macro definition of DRM_DEBUG_KMS can be used. 115 * DRM_DEBUG_KMS(fmt, args...) 116 * The debug info by using the DRM_DEBUG_KMS can be obtained by 117 * adding the boot option of "drm.debug=0x04" 118 * 119 * If we add the boot option of "drm.debug=0x06", we can get the debug info by 120 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER. 121 * If we add the boot option of "drm.debug=0x05", we can get the debug info by 122 * using the DRM_DEBUG_KMS and DRM_DEBUG. 123 */ 124 125extern __attribute__((format (printf, 4, 5))) 126void drm_ut_debug_printk(unsigned int request_level, 127 const char *prefix, 128 const char *function_name, 129 const char *format, ...); 130extern __attribute__((format (printf, 2, 3))) 131int drm_err(const char *func, const char *format, ...); 132 133/***********************************************************************/ 134/** \name DRM template customization defaults */ 135/*@{*/ 136 137/* driver capabilities and requirements mask */ 138#define DRIVER_USE_AGP 0x1 139#define DRIVER_REQUIRE_AGP 0x2 140#define DRIVER_USE_MTRR 0x4 141#define DRIVER_PCI_DMA 0x8 142#define DRIVER_SG 0x10 143#define DRIVER_HAVE_DMA 0x20 144#define DRIVER_HAVE_IRQ 0x40 145#define DRIVER_IRQ_SHARED 0x80 146#define DRIVER_IRQ_VBL 0x100 147#define DRIVER_DMA_QUEUE 0x200 148#define DRIVER_FB_DMA 0x400 149#define DRIVER_IRQ_VBL2 0x800 150#define DRIVER_GEM 0x1000 151#define DRIVER_MODESET 0x2000 152 153#define DRIVER_BUS_PCI 0x1 154#define DRIVER_BUS_PLATFORM 0x2 155#define DRIVER_BUS_USB 0x3 156 157/***********************************************************************/ 158/** \name Begin the DRM... */ 159/*@{*/ 160 161#define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then 162 also include looping detection. */ 163 164#define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */ 165#define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */ 166#define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */ 167#define DRM_LOOPING_LIMIT 5000000 168#define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */ 169#define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */ 170 171#define DRM_FLAG_DEBUG 0x01 172 173#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8) 174#define DRM_MAP_HASH_OFFSET 0x10000000 175 176/*@}*/ 177 178/***********************************************************************/ 179/** \name Macros to make printk easier */ 180/*@{*/ 181 182/** 183 * Error output. 184 * 185 * \param fmt printf() like format string. 186 * \param arg arguments 187 */ 188#define DRM_ERROR(fmt, ...) \ 189 drm_err(__func__, fmt, ##__VA_ARGS__) 190 191#define DRM_INFO(fmt, ...) \ 192 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) 193 194/** 195 * Debug output. 196 * 197 * \param fmt printf() like format string. 198 * \param arg arguments 199 */ 200#if DRM_DEBUG_CODE 201#define DRM_DEBUG(fmt, args...) \ 202 do { \ 203 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \ 204 __func__, fmt, ##args); \ 205 } while (0) 206 207#define DRM_DEBUG_DRIVER(fmt, args...) \ 208 do { \ 209 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \ 210 __func__, fmt, ##args); \ 211 } while (0) 212#define DRM_DEBUG_KMS(fmt, args...) \ 213 do { \ 214 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \ 215 __func__, fmt, ##args); \ 216 } while (0) 217#define DRM_LOG(fmt, args...) \ 218 do { \ 219 drm_ut_debug_printk(DRM_UT_CORE, NULL, \ 220 NULL, fmt, ##args); \ 221 } while (0) 222#define DRM_LOG_KMS(fmt, args...) \ 223 do { \ 224 drm_ut_debug_printk(DRM_UT_KMS, NULL, \ 225 NULL, fmt, ##args); \ 226 } while (0) 227#define DRM_LOG_MODE(fmt, args...) \ 228 do { \ 229 drm_ut_debug_printk(DRM_UT_MODE, NULL, \ 230 NULL, fmt, ##args); \ 231 } while (0) 232#define DRM_LOG_DRIVER(fmt, args...) \ 233 do { \ 234 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \ 235 NULL, fmt, ##args); \ 236 } while (0) 237#else 238#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0) 239#define DRM_DEBUG_KMS(fmt, args...) do { } while (0) 240#define DRM_DEBUG(fmt, arg...) do { } while (0) 241#define DRM_LOG(fmt, arg...) do { } while (0) 242#define DRM_LOG_KMS(fmt, args...) do { } while (0) 243#define DRM_LOG_MODE(fmt, arg...) do { } while (0) 244#define DRM_LOG_DRIVER(fmt, arg...) do { } while (0) 245 246#endif 247 248/*@}*/ 249 250/***********************************************************************/ 251/** \name Internal types and structures */ 252/*@{*/ 253 254#define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x) 255 256#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1)) 257#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x)) 258 259#define DRM_IF_VERSION(maj, min) (maj << 16 | min) 260 261/** 262 * Test that the hardware lock is held by the caller, returning otherwise. 263 * 264 * \param dev DRM device. 265 * \param filp file pointer of the caller. 266 */ 267#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \ 268do { \ 269 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \ 270 _file_priv->master->lock.file_priv != _file_priv) { \ 271 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\ 272 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\ 273 _file_priv->master->lock.file_priv, _file_priv); \ 274 return -EINVAL; \ 275 } \ 276} while (0) 277 278/** 279 * Ioctl function type. 280 * 281 * \param inode device inode. 282 * \param file_priv DRM file private pointer. 283 * \param cmd command. 284 * \param arg argument. 285 */ 286typedef int drm_ioctl_t(struct drm_device *dev, void *data, 287 struct drm_file *file_priv); 288 289typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, 290 unsigned long arg); 291 292#define DRM_IOCTL_NR(n) _IOC_NR(n) 293#define DRM_MAJOR 226 294 295#define DRM_AUTH 0x1 296#define DRM_MASTER 0x2 297#define DRM_ROOT_ONLY 0x4 298#define DRM_CONTROL_ALLOW 0x8 299#define DRM_UNLOCKED 0x10 300 301struct drm_ioctl_desc { 302 unsigned int cmd; 303 int flags; 304 drm_ioctl_t *func; 305 unsigned int cmd_drv; 306}; 307 308/** 309 * Creates a driver or general drm_ioctl_desc array entry for the given 310 * ioctl, for use by drm_ioctl(). 311 */ 312 313#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ 314 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl} 315 316struct drm_magic_entry { 317 struct list_head head; 318 struct drm_hash_item hash_item; 319 struct drm_file *priv; 320}; 321 322struct drm_vma_entry { 323 struct list_head head; 324 struct vm_area_struct *vma; 325 pid_t pid; 326}; 327 328/** 329 * DMA buffer. 330 */ 331struct drm_buf { 332 int idx; /**< Index into master buflist */ 333 int total; /**< Buffer size */ 334 int order; /**< log-base-2(total) */ 335 int used; /**< Amount of buffer in use (for DMA) */ 336 unsigned long offset; /**< Byte offset (used internally) */ 337 void *address; /**< Address of buffer */ 338 unsigned long bus_address; /**< Bus address of buffer */ 339 struct drm_buf *next; /**< Kernel-only: used for free list */ 340 __volatile__ int waiting; /**< On kernel DMA queue */ 341 __volatile__ int pending; /**< On hardware DMA queue */ 342 wait_queue_head_t dma_wait; /**< Processes waiting */ 343 struct drm_file *file_priv; /**< Private of holding file descr */ 344 int context; /**< Kernel queue for this buffer */ 345 int while_locked; /**< Dispatch this buffer while locked */ 346 enum { 347 DRM_LIST_NONE = 0, 348 DRM_LIST_FREE = 1, 349 DRM_LIST_WAIT = 2, 350 DRM_LIST_PEND = 3, 351 DRM_LIST_PRIO = 4, 352 DRM_LIST_RECLAIM = 5 353 } list; /**< Which list we're on */ 354 355 int dev_priv_size; /**< Size of buffer private storage */ 356 void *dev_private; /**< Per-buffer private storage */ 357}; 358 359/** bufs is one longer than it has to be */ 360struct drm_waitlist { 361 int count; /**< Number of possible buffers */ 362 struct drm_buf **bufs; /**< List of pointers to buffers */ 363 struct drm_buf **rp; /**< Read pointer */ 364 struct drm_buf **wp; /**< Write pointer */ 365 struct drm_buf **end; /**< End pointer */ 366 spinlock_t read_lock; 367 spinlock_t write_lock; 368}; 369 370struct drm_freelist { 371 int initialized; /**< Freelist in use */ 372 atomic_t count; /**< Number of free buffers */ 373 struct drm_buf *next; /**< End pointer */ 374 375 wait_queue_head_t waiting; /**< Processes waiting on free bufs */ 376 int low_mark; /**< Low water mark */ 377 int high_mark; /**< High water mark */ 378 atomic_t wfh; /**< If waiting for high mark */ 379 spinlock_t lock; 380}; 381 382typedef struct drm_dma_handle { 383 dma_addr_t busaddr; 384 void *vaddr; 385 size_t size; 386} drm_dma_handle_t; 387 388/** 389 * Buffer entry. There is one of this for each buffer size order. 390 */ 391struct drm_buf_entry { 392 int buf_size; /**< size */ 393 int buf_count; /**< number of buffers */ 394 struct drm_buf *buflist; /**< buffer list */ 395 int seg_count; 396 int page_order; 397 struct drm_dma_handle **seglist; 398 399 struct drm_freelist freelist; 400}; 401 402/* Event queued up for userspace to read */ 403struct drm_pending_event { 404 struct drm_event *event; 405 struct list_head link; 406 struct drm_file *file_priv; 407 pid_t pid; /* pid of requester, no guarantee it's valid by the time 408 we deliver the event, for tracing only */ 409 void (*destroy)(struct drm_pending_event *event); 410}; 411 412/** File private data */ 413struct drm_file { 414 int authenticated; 415 pid_t pid; 416 uid_t uid; 417 drm_magic_t magic; 418 unsigned long ioctl_count; 419 struct list_head lhead; 420 struct drm_minor *minor; 421 unsigned long lock_count; 422 423 /** Mapping of mm object handles to object pointers. */ 424 struct idr object_idr; 425 /** Lock for synchronization of access to object_idr. */ 426 spinlock_t table_lock; 427 428 struct file *filp; 429 void *driver_priv; 430 431 int is_master; /* this file private is a master for a minor */ 432 struct drm_master *master; /* master this node is currently associated with 433 N.B. not always minor->master */ 434 struct list_head fbs; 435 436 wait_queue_head_t event_wait; 437 struct list_head event_list; 438 int event_space; 439}; 440 441/** Wait queue */ 442struct drm_queue { 443 atomic_t use_count; /**< Outstanding uses (+1) */ 444 atomic_t finalization; /**< Finalization in progress */ 445 atomic_t block_count; /**< Count of processes waiting */ 446 atomic_t block_read; /**< Queue blocked for reads */ 447 wait_queue_head_t read_queue; /**< Processes waiting on block_read */ 448 atomic_t block_write; /**< Queue blocked for writes */ 449 wait_queue_head_t write_queue; /**< Processes waiting on block_write */ 450 atomic_t total_queued; /**< Total queued statistic */ 451 atomic_t total_flushed; /**< Total flushes statistic */ 452 atomic_t total_locks; /**< Total locks statistics */ 453 enum drm_ctx_flags flags; /**< Context preserving and 2D-only */ 454 struct drm_waitlist waitlist; /**< Pending buffers */ 455 wait_queue_head_t flush_queue; /**< Processes waiting until flush */ 456}; 457 458/** 459 * Lock data. 460 */ 461struct drm_lock_data { 462 struct drm_hw_lock *hw_lock; /**< Hardware lock */ 463 /** Private of lock holder's file (NULL=kernel) */ 464 struct drm_file *file_priv; 465 wait_queue_head_t lock_queue; /**< Queue of blocked processes */ 466 unsigned long lock_time; /**< Time of last lock in jiffies */ 467 spinlock_t spinlock; 468 uint32_t kernel_waiters; 469 uint32_t user_waiters; 470 int idle_has_lock; 471}; 472 473/** 474 * DMA data. 475 */ 476struct drm_device_dma { 477 478 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */ 479 int buf_count; /**< total number of buffers */ 480 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */ 481 int seg_count; 482 int page_count; /**< number of pages */ 483 unsigned long *pagelist; /**< page list */ 484 unsigned long byte_count; 485 enum { 486 _DRM_DMA_USE_AGP = 0x01, 487 _DRM_DMA_USE_SG = 0x02, 488 _DRM_DMA_USE_FB = 0x04, 489 _DRM_DMA_USE_PCI_RO = 0x08 490 } flags; 491 492}; 493 494/** 495 * AGP memory entry. Stored as a doubly linked list. 496 */ 497struct drm_agp_mem { 498 unsigned long handle; /**< handle */ 499 DRM_AGP_MEM *memory; 500 unsigned long bound; /**< address */ 501 int pages; 502 struct list_head head; 503}; 504 505/** 506 * AGP data. 507 * 508 * \sa drm_agp_init() and drm_device::agp. 509 */ 510struct drm_agp_head { 511 DRM_AGP_KERN agp_info; /**< AGP device information */ 512 struct list_head memory; 513 unsigned long mode; /**< AGP mode */ 514 struct agp_bridge_data *bridge; 515 int enabled; /**< whether the AGP bus as been enabled */ 516 int acquired; /**< whether the AGP device has been acquired */ 517 unsigned long base; 518 int agp_mtrr; 519 int cant_use_aperture; 520 unsigned long page_mask; 521}; 522 523/** 524 * Scatter-gather memory. 525 */ 526struct drm_sg_mem { 527 unsigned long handle; 528 void *virtual; 529 int pages; 530 struct page **pagelist; 531 dma_addr_t *busaddr; 532}; 533 534struct drm_sigdata { 535 int context; 536 struct drm_hw_lock *lock; 537}; 538 539 540/** 541 * Kernel side of a mapping 542 */ 543struct drm_local_map { 544 resource_size_t offset; /**< Requested physical address (0 for SAREA)*/ 545 unsigned long size; /**< Requested physical size (bytes) */ 546 enum drm_map_type type; /**< Type of memory to map */ 547 enum drm_map_flags flags; /**< Flags */ 548 void *handle; /**< User-space: "Handle" to pass to mmap() */ 549 /**< Kernel-space: kernel-virtual address */ 550 int mtrr; /**< MTRR slot used */ 551}; 552 553typedef struct drm_local_map drm_local_map_t; 554 555/** 556 * Mappings list 557 */ 558struct drm_map_list { 559 struct list_head head; /**< list head */ 560 struct drm_hash_item hash; 561 struct drm_local_map *map; /**< mapping */ 562 uint64_t user_token; 563 struct drm_master *master; 564 struct drm_mm_node *file_offset_node; /**< fake offset */ 565}; 566 567/** 568 * Context handle list 569 */ 570struct drm_ctx_list { 571 struct list_head head; /**< list head */ 572 drm_context_t handle; /**< context handle */ 573 struct drm_file *tag; /**< associated fd private data */ 574}; 575 576/* location of GART table */ 577#define DRM_ATI_GART_MAIN 1 578#define DRM_ATI_GART_FB 2 579 580#define DRM_ATI_GART_PCI 1 581#define DRM_ATI_GART_PCIE 2 582#define DRM_ATI_GART_IGP 3 583 584struct drm_ati_pcigart_info { 585 int gart_table_location; 586 int gart_reg_if; 587 void *addr; 588 dma_addr_t bus_addr; 589 dma_addr_t table_mask; 590 struct drm_dma_handle *table_handle; 591 struct drm_local_map mapping; 592 int table_size; 593}; 594 595/** 596 * GEM specific mm private for tracking GEM objects 597 */ 598struct drm_gem_mm { 599 struct drm_mm offset_manager; /**< Offset mgmt for buffer objects */ 600 struct drm_open_hash offset_hash; /**< User token hash table for maps */ 601}; 602 603/** 604 * This structure defines the drm_mm memory object, which will be used by the 605 * DRM for its buffer objects. 606 */ 607struct drm_gem_object { 608 /** Reference count of this object */ 609 struct kref refcount; 610 611 /** Handle count of this object. Each handle also holds a reference */ 612 atomic_t handle_count; /* number of handles on this object */ 613 614 /** Related drm device */ 615 struct drm_device *dev; 616 617 /** File representing the shmem storage */ 618 struct file *filp; 619 620 /* Mapping info for this object */ 621 struct drm_map_list map_list; 622 623 /** 624 * Size of the object, in bytes. Immutable over the object's 625 * lifetime. 626 */ 627 size_t size; 628 629 /** 630 * Global name for this object, starts at 1. 0 means unnamed. 631 * Access is covered by the object_name_lock in the related drm_device 632 */ 633 int name; 634 635 /** 636 * Memory domains. These monitor which caches contain read/write data 637 * related to the object. When transitioning from one set of domains 638 * to another, the driver is called to ensure that caches are suitably 639 * flushed and invalidated 640 */ 641 uint32_t read_domains; 642 uint32_t write_domain; 643 644 /** 645 * While validating an exec operation, the 646 * new read/write domain values are computed here. 647 * They will be transferred to the above values 648 * at the point that any cache flushing occurs 649 */ 650 uint32_t pending_read_domains; 651 uint32_t pending_write_domain; 652 653 void *driver_private; 654}; 655 656#include "drm_crtc.h" 657 658/* per-master structure */ 659struct drm_master { 660 661 struct kref refcount; /* refcount for this master */ 662 663 struct list_head head; /**< each minor contains a list of masters */ 664 struct drm_minor *minor; /**< link back to minor we are a master for */ 665 666 char *unique; /**< Unique identifier: e.g., busid */ 667 int unique_len; /**< Length of unique field */ 668 int unique_size; /**< amount allocated */ 669 670 int blocked; /**< Blocked due to VC switch? */ 671 672 /** \name Authentication */ 673 /*@{ */ 674 struct drm_open_hash magiclist; 675 struct list_head magicfree; 676 /*@} */ 677 678 struct drm_lock_data lock; /**< Information on hardware lock */ 679 680 void *driver_priv; /**< Private structure for driver to use */ 681}; 682 683/* Size of ringbuffer for vblank timestamps. Just double-buffer 684 * in initial implementation. 685 */ 686#define DRM_VBLANKTIME_RBSIZE 2 687 688/* Flags and return codes for get_vblank_timestamp() driver function. */ 689#define DRM_CALLED_FROM_VBLIRQ 1 690#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0) 691#define DRM_VBLANKTIME_INVBL (1 << 1) 692 693/* get_scanout_position() return flags */ 694#define DRM_SCANOUTPOS_VALID (1 << 0) 695#define DRM_SCANOUTPOS_INVBL (1 << 1) 696#define DRM_SCANOUTPOS_ACCURATE (1 << 2) 697 698struct drm_bus { 699 int bus_type; 700 int (*get_irq)(struct drm_device *dev); 701 const char *(*get_name)(struct drm_device *dev); 702 int (*set_busid)(struct drm_device *dev, struct drm_master *master); 703 int (*set_unique)(struct drm_device *dev, struct drm_master *master, 704 struct drm_unique *unique); 705 int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p); 706 /* hooks that are for PCI */ 707 int (*agp_init)(struct drm_device *dev); 708 709}; 710 711/** 712 * DRM driver structure. This structure represent the common code for 713 * a family of cards. There will one drm_device for each card present 714 * in this family 715 */ 716struct drm_driver { 717 int (*load) (struct drm_device *, unsigned long flags); 718 int (*firstopen) (struct drm_device *); 719 int (*open) (struct drm_device *, struct drm_file *); 720 void (*preclose) (struct drm_device *, struct drm_file *file_priv); 721 void (*postclose) (struct drm_device *, struct drm_file *); 722 void (*lastclose) (struct drm_device *); 723 int (*unload) (struct drm_device *); 724 int (*suspend) (struct drm_device *, pm_message_t state); 725 int (*resume) (struct drm_device *); 726 int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv); 727 int (*dma_quiescent) (struct drm_device *); 728 int (*context_dtor) (struct drm_device *dev, int context); 729 730 /** 731 * get_vblank_counter - get raw hardware vblank counter 732 * @dev: DRM device 733 * @crtc: counter to fetch 734 * 735 * Driver callback for fetching a raw hardware vblank counter 736 * for @crtc. If a device doesn't have a hardware counter, the 737 * driver can simply return the value of drm_vblank_count and 738 * make the enable_vblank() and disable_vblank() hooks into no-ops, 739 * leaving interrupts enabled at all times. 740 * 741 * Wraparound handling and loss of events due to modesetting is dealt 742 * with in the DRM core code. 743 * 744 * RETURNS 745 * Raw vblank counter value. 746 */ 747 u32 (*get_vblank_counter) (struct drm_device *dev, int crtc); 748 749 /** 750 * enable_vblank - enable vblank interrupt events 751 * @dev: DRM device 752 * @crtc: which irq to enable 753 * 754 * Enable vblank interrupts for @crtc. If the device doesn't have 755 * a hardware vblank counter, this routine should be a no-op, since 756 * interrupts will have to stay on to keep the count accurate. 757 * 758 * RETURNS 759 * Zero on success, appropriate errno if the given @crtc's vblank 760 * interrupt cannot be enabled. 761 */ 762 int (*enable_vblank) (struct drm_device *dev, int crtc); 763 764 /** 765 * disable_vblank - disable vblank interrupt events 766 * @dev: DRM device 767 * @crtc: which irq to enable 768 * 769 * Disable vblank interrupts for @crtc. If the device doesn't have 770 * a hardware vblank counter, this routine should be a no-op, since 771 * interrupts will have to stay on to keep the count accurate. 772 */ 773 void (*disable_vblank) (struct drm_device *dev, int crtc); 774 775 /** 776 * Called by \c drm_device_is_agp. Typically used to determine if a 777 * card is really attached to AGP or not. 778 * 779 * \param dev DRM device handle 780 * 781 * \returns 782 * One of three values is returned depending on whether or not the 783 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP 784 * (return of 1), or may or may not be AGP (return of 2). 785 */ 786 int (*device_is_agp) (struct drm_device *dev); 787 788 /** 789 * Called by vblank timestamping code. 790 * 791 * Return the current display scanout position from a crtc. 792 * 793 * \param dev DRM device. 794 * \param crtc Id of the crtc to query. 795 * \param *vpos Target location for current vertical scanout position. 796 * \param *hpos Target location for current horizontal scanout position. 797 * 798 * Returns vpos as a positive number while in active scanout area. 799 * Returns vpos as a negative number inside vblank, counting the number 800 * of scanlines to go until end of vblank, e.g., -1 means "one scanline 801 * until start of active scanout / end of vblank." 802 * 803 * \return Flags, or'ed together as follows: 804 * 805 * DRM_SCANOUTPOS_VALID = Query successful. 806 * DRM_SCANOUTPOS_INVBL = Inside vblank. 807 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of 808 * this flag means that returned position may be offset by a constant 809 * but unknown small number of scanlines wrt. real scanout position. 810 * 811 */ 812 int (*get_scanout_position) (struct drm_device *dev, int crtc, 813 int *vpos, int *hpos); 814 815 /** 816 * Called by \c drm_get_last_vbltimestamp. Should return a precise 817 * timestamp when the most recent VBLANK interval ended or will end. 818 * 819 * Specifically, the timestamp in @vblank_time should correspond as 820 * closely as possible to the time when the first video scanline of 821 * the video frame after the end of VBLANK will start scanning out, 822 * the time immmediately after end of the VBLANK interval. If the 823 * @crtc is currently inside VBLANK, this will be a time in the future. 824 * If the @crtc is currently scanning out a frame, this will be the 825 * past start time of the current scanout. This is meant to adhere 826 * to the OpenML OML_sync_control extension specification. 827 * 828 * \param dev dev DRM device handle. 829 * \param crtc crtc for which timestamp should be returned. 830 * \param *max_error Maximum allowable timestamp error in nanoseconds. 831 * Implementation should strive to provide timestamp 832 * with an error of at most *max_error nanoseconds. 833 * Returns true upper bound on error for timestamp. 834 * \param *vblank_time Target location for returned vblank timestamp. 835 * \param flags 0 = Defaults, no special treatment needed. 836 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank 837 * irq handler. Some drivers need to apply some workarounds 838 * for gpu-specific vblank irq quirks if flag is set. 839 * 840 * \returns 841 * Zero if timestamping isn't supported in current display mode or a 842 * negative number on failure. A positive status code on success, 843 * which describes how the vblank_time timestamp was computed. 844 */ 845 int (*get_vblank_timestamp) (struct drm_device *dev, int crtc, 846 int *max_error, 847 struct timeval *vblank_time, 848 unsigned flags); 849 850 /* these have to be filled in */ 851 852 irqreturn_t(*irq_handler) (DRM_IRQ_ARGS); 853 void (*irq_preinstall) (struct drm_device *dev); 854 int (*irq_postinstall) (struct drm_device *dev); 855 void (*irq_uninstall) (struct drm_device *dev); 856 void (*reclaim_buffers) (struct drm_device *dev, 857 struct drm_file * file_priv); 858 void (*reclaim_buffers_locked) (struct drm_device *dev, 859 struct drm_file *file_priv); 860 void (*reclaim_buffers_idlelocked) (struct drm_device *dev, 861 struct drm_file *file_priv); 862 void (*set_version) (struct drm_device *dev, 863 struct drm_set_version *sv); 864 865 /* Master routines */ 866 int (*master_create)(struct drm_device *dev, struct drm_master *master); 867 void (*master_destroy)(struct drm_device *dev, struct drm_master *master); 868 /** 869 * master_set is called whenever the minor master is set. 870 * master_drop is called whenever the minor master is dropped. 871 */ 872 873 int (*master_set)(struct drm_device *dev, struct drm_file *file_priv, 874 bool from_open); 875 void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv, 876 bool from_release); 877 878 int (*debugfs_init)(struct drm_minor *minor); 879 void (*debugfs_cleanup)(struct drm_minor *minor); 880 881 /** 882 * Driver-specific constructor for drm_gem_objects, to set up 883 * obj->driver_private. 884 * 885 * Returns 0 on success. 886 */ 887 int (*gem_init_object) (struct drm_gem_object *obj); 888 void (*gem_free_object) (struct drm_gem_object *obj); 889 int (*gem_open_object) (struct drm_gem_object *, struct drm_file *); 890 void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); 891 892 /* vga arb irq handler */ 893 void (*vgaarb_irq)(struct drm_device *dev, bool state); 894 895 /* dumb alloc support */ 896 int (*dumb_create)(struct drm_file *file_priv, 897 struct drm_device *dev, 898 struct drm_mode_create_dumb *args); 899 int (*dumb_map_offset)(struct drm_file *file_priv, 900 struct drm_device *dev, uint32_t handle, 901 uint64_t *offset); 902 int (*dumb_destroy)(struct drm_file *file_priv, 903 struct drm_device *dev, 904 uint32_t handle); 905 906 /* Driver private ops for this object */ 907 struct vm_operations_struct *gem_vm_ops; 908 909 int major; 910 int minor; 911 int patchlevel; 912 char *name; 913 char *desc; 914 char *date; 915 916 u32 driver_features; 917 int dev_priv_size; 918 struct drm_ioctl_desc *ioctls; 919 int num_ioctls; 920 struct file_operations fops; 921 union { 922 struct pci_driver *pci; 923 struct platform_device *platform_device; 924 struct usb_driver *usb; 925 } kdriver; 926 struct drm_bus *bus; 927 928 /* List of devices hanging off this driver */ 929 struct list_head device_list; 930}; 931 932#define DRM_MINOR_UNASSIGNED 0 933#define DRM_MINOR_LEGACY 1 934#define DRM_MINOR_CONTROL 2 935#define DRM_MINOR_RENDER 3 936 937 938/** 939 * debugfs node list. This structure represents a debugfs file to 940 * be created by the drm core 941 */ 942struct drm_debugfs_list { 943 const char *name; /** file name */ 944 int (*show)(struct seq_file*, void*); /** show callback */ 945 u32 driver_features; /**< Required driver features for this entry */ 946}; 947 948/** 949 * debugfs node structure. This structure represents a debugfs file. 950 */ 951struct drm_debugfs_node { 952 struct list_head list; 953 struct drm_minor *minor; 954 struct drm_debugfs_list *debugfs_ent; 955 struct dentry *dent; 956}; 957 958/** 959 * Info file list entry. This structure represents a debugfs or proc file to 960 * be created by the drm core 961 */ 962struct drm_info_list { 963 const char *name; /** file name */ 964 int (*show)(struct seq_file*, void*); /** show callback */ 965 u32 driver_features; /**< Required driver features for this entry */ 966 void *data; 967}; 968 969/** 970 * debugfs node structure. This structure represents a debugfs file. 971 */ 972struct drm_info_node { 973 struct list_head list; 974 struct drm_minor *minor; 975 struct drm_info_list *info_ent; 976 struct dentry *dent; 977}; 978 979/** 980 * DRM minor structure. This structure represents a drm minor number. 981 */ 982struct drm_minor { 983 int index; /**< Minor device number */ 984 int type; /**< Control or render */ 985 dev_t device; /**< Device number for mknod */ 986 struct device kdev; /**< Linux device */ 987 struct drm_device *dev; 988 989 struct proc_dir_entry *proc_root; /**< proc directory entry */ 990 struct drm_info_node proc_nodes; 991 struct dentry *debugfs_root; 992 struct drm_info_node debugfs_nodes; 993 994 struct drm_master *master; /* currently active master for this node */ 995 struct list_head master_list; 996 struct drm_mode_group mode_group; 997}; 998 999/* mode specified on the command line */ 1000struct drm_cmdline_mode { 1001 bool specified; 1002 bool refresh_specified; 1003 bool bpp_specified; 1004 int xres, yres; 1005 int bpp; 1006 int refresh; 1007 bool rb; 1008 bool interlace; 1009 bool cvt; 1010 bool margins; 1011 enum drm_connector_force force; 1012}; 1013 1014 1015struct drm_pending_vblank_event { 1016 struct drm_pending_event base; 1017 int pipe; 1018 struct drm_event_vblank event; 1019}; 1020 1021/** 1022 * DRM device structure. This structure represent a complete card that 1023 * may contain multiple heads. 1024 */ 1025struct drm_device { 1026 struct list_head driver_item; /**< list of devices per driver */ 1027 char *devname; /**< For /proc/interrupts */ 1028 int if_version; /**< Highest interface version set */ 1029 1030 /** \name Locks */ 1031 /*@{ */ 1032 spinlock_t count_lock; /**< For inuse, drm_device::open_count, drm_device::buf_use */ 1033 struct mutex struct_mutex; /**< For others */ 1034 /*@} */ 1035 1036 /** \name Usage Counters */ 1037 /*@{ */ 1038 int open_count; /**< Outstanding files open */ 1039 atomic_t ioctl_count; /**< Outstanding IOCTLs pending */ 1040 atomic_t vma_count; /**< Outstanding vma areas open */ 1041 int buf_use; /**< Buffers in use -- cannot alloc */ 1042 atomic_t buf_alloc; /**< Buffer allocation in progress */ 1043 /*@} */ 1044 1045 /** \name Performance counters */ 1046 /*@{ */ 1047 unsigned long counters; 1048 enum drm_stat_type types[15]; 1049 atomic_t counts[15]; 1050 /*@} */ 1051 1052 struct list_head filelist; 1053 1054 /** \name Memory management */ 1055 /*@{ */ 1056 struct list_head maplist; /**< Linked list of regions */ 1057 int map_count; /**< Number of mappable regions */ 1058 struct drm_open_hash map_hash; /**< User token hash table for maps */ 1059 1060 /** \name Context handle management */ 1061 /*@{ */ 1062 struct list_head ctxlist; /**< Linked list of context handles */ 1063 int ctx_count; /**< Number of context handles */ 1064 struct mutex ctxlist_mutex; /**< For ctxlist */ 1065 1066 struct idr ctx_idr; 1067 1068 struct list_head vmalist; /**< List of vmas (for debugging) */ 1069 1070 /*@} */ 1071 1072 /** \name DMA queues (contexts) */ 1073 /*@{ */ 1074 int queue_count; /**< Number of active DMA queues */ 1075 int queue_reserved; /**< Number of reserved DMA queues */ 1076 int queue_slots; /**< Actual length of queuelist */ 1077 struct drm_queue **queuelist; /**< Vector of pointers to DMA queues */ 1078 struct drm_device_dma *dma; /**< Optional pointer for DMA support */ 1079 /*@} */ 1080 1081 /** \name Context support */ 1082 /*@{ */ 1083 int irq_enabled; /**< True if irq handler is enabled */ 1084 __volatile__ long context_flag; /**< Context swapping flag */ 1085 __volatile__ long interrupt_flag; /**< Interruption handler flag */ 1086 __volatile__ long dma_flag; /**< DMA dispatch flag */ 1087 wait_queue_head_t context_wait; /**< Processes waiting on ctx switch */ 1088 int last_checked; /**< Last context checked for DMA */ 1089 int last_context; /**< Last current context */ 1090 unsigned long last_switch; /**< jiffies at last context switch */ 1091 /*@} */ 1092 1093 struct work_struct work; 1094 /** \name VBLANK IRQ support */ 1095 /*@{ */ 1096 1097 /* 1098 * At load time, disabling the vblank interrupt won't be allowed since 1099 * old clients may not call the modeset ioctl and therefore misbehave. 1100 * Once the modeset ioctl *has* been called though, we can safely 1101 * disable them when unused. 1102 */ 1103 int vblank_disable_allowed; 1104 1105 wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */ 1106 atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */ 1107 struct timeval *_vblank_time; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */ 1108 spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */ 1109 spinlock_t vbl_lock; 1110 atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */ 1111 u32 *last_vblank; /* protected by dev->vbl_lock, used */ 1112 /* for wraparound handling */ 1113 int *vblank_enabled; /* so we don't call enable more than 1114 once per disable */ 1115 int *vblank_inmodeset; /* Display driver is setting mode */ 1116 u32 *last_vblank_wait; /* Last vblank seqno waited per CRTC */ 1117 struct timer_list vblank_disable_timer; 1118 1119 u32 max_vblank_count; /**< size of vblank counter register */ 1120 1121 /** 1122 * List of events 1123 */ 1124 struct list_head vblank_event_list; 1125 spinlock_t event_lock; 1126 1127 /*@} */ 1128 cycles_t ctx_start; 1129 cycles_t lck_start; 1130 1131 struct fasync_struct *buf_async;/**< Processes waiting for SIGIO */ 1132 wait_queue_head_t buf_readers; /**< Processes waiting to read */ 1133 wait_queue_head_t buf_writers; /**< Processes waiting to ctx switch */ 1134 1135 struct drm_agp_head *agp; /**< AGP data */ 1136 1137 struct device *dev; /**< Device structure */ 1138 struct pci_dev *pdev; /**< PCI device structure */ 1139 int pci_vendor; /**< PCI vendor id */ 1140 int pci_device; /**< PCI device id */ 1141#ifdef __alpha__ 1142 struct pci_controller *hose; 1143#endif 1144 1145 struct platform_device *platformdev; /**< Platform device struture */ 1146 struct usb_device *usbdev; 1147 1148 struct drm_sg_mem *sg; /**< Scatter gather memory */ 1149 unsigned int num_crtcs; /**< Number of CRTCs on this device */ 1150 void *dev_private; /**< device private data */ 1151 void *mm_private; 1152 struct address_space *dev_mapping; 1153 struct drm_sigdata sigdata; /**< For block_all_signals */ 1154 sigset_t sigmask; 1155 1156 struct drm_driver *driver; 1157 struct drm_local_map *agp_buffer_map; 1158 unsigned int agp_buffer_token; 1159 struct drm_minor *control; /**< Control node for card */ 1160 struct drm_minor *primary; /**< render type primary screen head */ 1161 1162 struct drm_mode_config mode_config; /**< Current mode config */ 1163 1164 /** \name GEM information */ 1165 /*@{ */ 1166 spinlock_t object_name_lock; 1167 struct idr object_name_idr; 1168 /*@} */ 1169 int switch_power_state; 1170}; 1171 1172#define DRM_SWITCH_POWER_ON 0 1173#define DRM_SWITCH_POWER_OFF 1 1174#define DRM_SWITCH_POWER_CHANGING 2 1175 1176static __inline__ int drm_core_check_feature(struct drm_device *dev, 1177 int feature) 1178{ 1179 return ((dev->driver->driver_features & feature) ? 1 : 0); 1180} 1181 1182static inline int drm_dev_to_irq(struct drm_device *dev) 1183{ 1184 return dev->driver->bus->get_irq(dev); 1185} 1186 1187 1188#if __OS_HAS_AGP 1189static inline int drm_core_has_AGP(struct drm_device *dev) 1190{ 1191 return drm_core_check_feature(dev, DRIVER_USE_AGP); 1192} 1193#else 1194#define drm_core_has_AGP(dev) (0) 1195#endif 1196 1197#if __OS_HAS_MTRR 1198static inline int drm_core_has_MTRR(struct drm_device *dev) 1199{ 1200 return drm_core_check_feature(dev, DRIVER_USE_MTRR); 1201} 1202 1203#define DRM_MTRR_WC MTRR_TYPE_WRCOMB 1204 1205static inline int drm_mtrr_add(unsigned long offset, unsigned long size, 1206 unsigned int flags) 1207{ 1208 return mtrr_add(offset, size, flags, 1); 1209} 1210 1211static inline int drm_mtrr_del(int handle, unsigned long offset, 1212 unsigned long size, unsigned int flags) 1213{ 1214 return mtrr_del(handle, offset, size); 1215} 1216 1217#else 1218#define drm_core_has_MTRR(dev) (0) 1219 1220#define DRM_MTRR_WC 0 1221 1222static inline int drm_mtrr_add(unsigned long offset, unsigned long size, 1223 unsigned int flags) 1224{ 1225 return 0; 1226} 1227 1228static inline int drm_mtrr_del(int handle, unsigned long offset, 1229 unsigned long size, unsigned int flags) 1230{ 1231 return 0; 1232} 1233#endif 1234 1235/******************************************************************/ 1236/** \name Internal function definitions */ 1237/*@{*/ 1238 1239 /* Driver support (drm_drv.h) */ 1240extern long drm_ioctl(struct file *filp, 1241 unsigned int cmd, unsigned long arg); 1242extern long drm_compat_ioctl(struct file *filp, 1243 unsigned int cmd, unsigned long arg); 1244extern int drm_lastclose(struct drm_device *dev); 1245 1246 /* Device support (drm_fops.h) */ 1247extern struct mutex drm_global_mutex; 1248extern int drm_open(struct inode *inode, struct file *filp); 1249extern int drm_stub_open(struct inode *inode, struct file *filp); 1250extern int drm_fasync(int fd, struct file *filp, int on); 1251extern ssize_t drm_read(struct file *filp, char __user *buffer, 1252 size_t count, loff_t *offset); 1253extern int drm_release(struct inode *inode, struct file *filp); 1254 1255 /* Mapping support (drm_vm.h) */ 1256extern int drm_mmap(struct file *filp, struct vm_area_struct *vma); 1257extern int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma); 1258extern void drm_vm_open_locked(struct vm_area_struct *vma); 1259extern void drm_vm_close_locked(struct vm_area_struct *vma); 1260extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait); 1261 1262 /* Memory management support (drm_memory.h) */ 1263#include "drm_memory.h" 1264extern void drm_mem_init(void); 1265extern int drm_mem_info(char *buf, char **start, off_t offset, 1266 int request, int *eof, void *data); 1267extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area); 1268 1269extern void drm_free_agp(DRM_AGP_MEM * handle, int pages); 1270extern int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start); 1271extern DRM_AGP_MEM *drm_agp_bind_pages(struct drm_device *dev, 1272 struct page **pages, 1273 unsigned long num_pages, 1274 uint32_t gtt_offset, 1275 uint32_t type); 1276extern int drm_unbind_agp(DRM_AGP_MEM * handle); 1277 1278 /* Misc. IOCTL support (drm_ioctl.h) */ 1279extern int drm_irq_by_busid(struct drm_device *dev, void *data, 1280 struct drm_file *file_priv); 1281extern int drm_getunique(struct drm_device *dev, void *data, 1282 struct drm_file *file_priv); 1283extern int drm_setunique(struct drm_device *dev, void *data, 1284 struct drm_file *file_priv); 1285extern int drm_getmap(struct drm_device *dev, void *data, 1286 struct drm_file *file_priv); 1287extern int drm_getclient(struct drm_device *dev, void *data, 1288 struct drm_file *file_priv); 1289extern int drm_getstats(struct drm_device *dev, void *data, 1290 struct drm_file *file_priv); 1291extern int drm_getcap(struct drm_device *dev, void *data, 1292 struct drm_file *file_priv); 1293extern int drm_setversion(struct drm_device *dev, void *data, 1294 struct drm_file *file_priv); 1295extern int drm_noop(struct drm_device *dev, void *data, 1296 struct drm_file *file_priv); 1297 1298 /* Context IOCTL support (drm_context.h) */ 1299extern int drm_resctx(struct drm_device *dev, void *data, 1300 struct drm_file *file_priv); 1301extern int drm_addctx(struct drm_device *dev, void *data, 1302 struct drm_file *file_priv); 1303extern int drm_modctx(struct drm_device *dev, void *data, 1304 struct drm_file *file_priv); 1305extern int drm_getctx(struct drm_device *dev, void *data, 1306 struct drm_file *file_priv); 1307extern int drm_switchctx(struct drm_device *dev, void *data, 1308 struct drm_file *file_priv); 1309extern int drm_newctx(struct drm_device *dev, void *data, 1310 struct drm_file *file_priv); 1311extern int drm_rmctx(struct drm_device *dev, void *data, 1312 struct drm_file *file_priv); 1313 1314extern int drm_ctxbitmap_init(struct drm_device *dev); 1315extern void drm_ctxbitmap_cleanup(struct drm_device *dev); 1316extern void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle); 1317 1318extern int drm_setsareactx(struct drm_device *dev, void *data, 1319 struct drm_file *file_priv); 1320extern int drm_getsareactx(struct drm_device *dev, void *data, 1321 struct drm_file *file_priv); 1322 1323 /* Authentication IOCTL support (drm_auth.h) */ 1324extern int drm_getmagic(struct drm_device *dev, void *data, 1325 struct drm_file *file_priv); 1326extern int drm_authmagic(struct drm_device *dev, void *data, 1327 struct drm_file *file_priv); 1328extern int drm_remove_magic(struct drm_master *master, drm_magic_t magic); 1329 1330/* Cache management (drm_cache.c) */ 1331void drm_clflush_pages(struct page *pages[], unsigned long num_pages); 1332 1333 /* Locking IOCTL support (drm_lock.h) */ 1334extern int drm_lock(struct drm_device *dev, void *data, 1335 struct drm_file *file_priv); 1336extern int drm_unlock(struct drm_device *dev, void *data, 1337 struct drm_file *file_priv); 1338extern int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context); 1339extern void drm_idlelock_take(struct drm_lock_data *lock_data); 1340extern void drm_idlelock_release(struct drm_lock_data *lock_data); 1341 1342/* 1343 * These are exported to drivers so that they can implement fencing using 1344 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. 1345 */ 1346 1347extern int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv); 1348 1349 /* Buffer management support (drm_bufs.h) */ 1350extern int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request); 1351extern int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request); 1352extern int drm_addmap(struct drm_device *dev, resource_size_t offset, 1353 unsigned int size, enum drm_map_type type, 1354 enum drm_map_flags flags, struct drm_local_map **map_ptr); 1355extern int drm_addmap_ioctl(struct drm_device *dev, void *data, 1356 struct drm_file *file_priv); 1357extern int drm_rmmap(struct drm_device *dev, struct drm_local_map *map); 1358extern int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map); 1359extern int drm_rmmap_ioctl(struct drm_device *dev, void *data, 1360 struct drm_file *file_priv); 1361extern int drm_addbufs(struct drm_device *dev, void *data, 1362 struct drm_file *file_priv); 1363extern int drm_infobufs(struct drm_device *dev, void *data, 1364 struct drm_file *file_priv); 1365extern int drm_markbufs(struct drm_device *dev, void *data, 1366 struct drm_file *file_priv); 1367extern int drm_freebufs(struct drm_device *dev, void *data, 1368 struct drm_file *file_priv); 1369extern int drm_mapbufs(struct drm_device *dev, void *data, 1370 struct drm_file *file_priv); 1371extern int drm_order(unsigned long size); 1372 1373 /* DMA support (drm_dma.h) */ 1374extern int drm_dma_setup(struct drm_device *dev); 1375extern void drm_dma_takedown(struct drm_device *dev); 1376extern void drm_free_buffer(struct drm_device *dev, struct drm_buf * buf); 1377extern void drm_core_reclaim_buffers(struct drm_device *dev, 1378 struct drm_file *filp); 1379 1380 /* IRQ support (drm_irq.h) */ 1381extern int drm_control(struct drm_device *dev, void *data, 1382 struct drm_file *file_priv); 1383extern irqreturn_t drm_irq_handler(DRM_IRQ_ARGS); 1384extern int drm_irq_install(struct drm_device *dev); 1385extern int drm_irq_uninstall(struct drm_device *dev); 1386extern void drm_driver_irq_preinstall(struct drm_device *dev); 1387extern void drm_driver_irq_postinstall(struct drm_device *dev); 1388extern void drm_driver_irq_uninstall(struct drm_device *dev); 1389 1390extern int drm_vblank_init(struct drm_device *dev, int num_crtcs); 1391extern int drm_wait_vblank(struct drm_device *dev, void *data, 1392 struct drm_file *filp); 1393extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq); 1394extern u32 drm_vblank_count(struct drm_device *dev, int crtc); 1395extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc, 1396 struct timeval *vblanktime); 1397extern bool drm_handle_vblank(struct drm_device *dev, int crtc); 1398extern int drm_vblank_get(struct drm_device *dev, int crtc); 1399extern void drm_vblank_put(struct drm_device *dev, int crtc); 1400extern void drm_vblank_off(struct drm_device *dev, int crtc); 1401extern void drm_vblank_cleanup(struct drm_device *dev); 1402extern u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc, 1403 struct timeval *tvblank, unsigned flags); 1404extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, 1405 int crtc, int *max_error, 1406 struct timeval *vblank_time, 1407 unsigned flags, 1408 struct drm_crtc *refcrtc); 1409extern void drm_calc_timestamping_constants(struct drm_crtc *crtc); 1410 1411extern bool 1412drm_mode_parse_command_line_for_connector(const char *mode_option, 1413 struct drm_connector *connector, 1414 struct drm_cmdline_mode *mode); 1415 1416extern struct drm_display_mode * 1417drm_mode_create_from_cmdline_mode(struct drm_device *dev, 1418 struct drm_cmdline_mode *cmd); 1419 1420/* Modesetting support */ 1421extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc); 1422extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc); 1423extern int drm_modeset_ctl(struct drm_device *dev, void *data, 1424 struct drm_file *file_priv); 1425 1426 /* AGP/GART support (drm_agpsupport.h) */ 1427extern struct drm_agp_head *drm_agp_init(struct drm_device *dev); 1428extern int drm_agp_acquire(struct drm_device *dev); 1429extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data, 1430 struct drm_file *file_priv); 1431extern int drm_agp_release(struct drm_device *dev); 1432extern int drm_agp_release_ioctl(struct drm_device *dev, void *data, 1433 struct drm_file *file_priv); 1434extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode); 1435extern int drm_agp_enable_ioctl(struct drm_device *dev, void *data, 1436 struct drm_file *file_priv); 1437extern int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info); 1438extern int drm_agp_info_ioctl(struct drm_device *dev, void *data, 1439 struct drm_file *file_priv); 1440extern int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request); 1441extern int drm_agp_alloc_ioctl(struct drm_device *dev, void *data, 1442 struct drm_file *file_priv); 1443extern int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request); 1444extern int drm_agp_free_ioctl(struct drm_device *dev, void *data, 1445 struct drm_file *file_priv); 1446extern int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request); 1447extern int drm_agp_unbind_ioctl(struct drm_device *dev, void *data, 1448 struct drm_file *file_priv); 1449extern int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request); 1450extern int drm_agp_bind_ioctl(struct drm_device *dev, void *data, 1451 struct drm_file *file_priv); 1452 1453 /* Stub support (drm_stub.h) */ 1454extern int drm_setmaster_ioctl(struct drm_device *dev, void *data, 1455 struct drm_file *file_priv); 1456extern int drm_dropmaster_ioctl(struct drm_device *dev, void *data, 1457 struct drm_file *file_priv); 1458struct drm_master *drm_master_create(struct drm_minor *minor); 1459extern struct drm_master *drm_master_get(struct drm_master *master); 1460extern void drm_master_put(struct drm_master **master); 1461 1462extern void drm_put_dev(struct drm_device *dev); 1463extern int drm_put_minor(struct drm_minor **minor); 1464extern unsigned int drm_debug; 1465 1466extern unsigned int drm_vblank_offdelay; 1467extern unsigned int drm_timestamp_precision; 1468 1469extern struct class *drm_class; 1470extern struct proc_dir_entry *drm_proc_root; 1471extern struct dentry *drm_debugfs_root; 1472 1473extern struct idr drm_minors_idr; 1474 1475extern struct drm_local_map *drm_getsarea(struct drm_device *dev); 1476 1477 /* Proc support (drm_proc.h) */ 1478extern int drm_proc_init(struct drm_minor *minor, int minor_id, 1479 struct proc_dir_entry *root); 1480extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root); 1481 1482 /* Debugfs support */ 1483#if defined(CONFIG_DEBUG_FS) 1484extern int drm_debugfs_init(struct drm_minor *minor, int minor_id, 1485 struct dentry *root); 1486extern int drm_debugfs_create_files(struct drm_info_list *files, int count, 1487 struct dentry *root, struct drm_minor *minor); 1488extern int drm_debugfs_remove_files(struct drm_info_list *files, int count, 1489 struct drm_minor *minor); 1490extern int drm_debugfs_cleanup(struct drm_minor *minor); 1491#endif 1492 1493 /* Info file support */ 1494extern int drm_name_info(struct seq_file *m, void *data); 1495extern int drm_vm_info(struct seq_file *m, void *data); 1496extern int drm_queues_info(struct seq_file *m, void *data); 1497extern int drm_bufs_info(struct seq_file *m, void *data); 1498extern int drm_vblank_info(struct seq_file *m, void *data); 1499extern int drm_clients_info(struct seq_file *m, void* data); 1500extern int drm_gem_name_info(struct seq_file *m, void *data); 1501 1502#if DRM_DEBUG_CODE 1503extern int drm_vma_info(struct seq_file *m, void *d…
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